diff options
| author | Stefan Reinauer <reinauer@chromium.org> | 2012-11-30 12:34:04 -0800 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2012-11-30 23:59:58 +0100 |
| commit | 8d7115560d469f901d7d8ccb242d0b437e7394aa (patch) | |
| tree | 0f1b4bd63c48a233c49d5a9ca15f08a1675d1ff4 /src/device/oprom | |
| parent | 4b6be985aae8bff84ae442e7be7669e93694fa1e (diff) | |
Rename devices -> device
to match src/include/device
Change-Id: I5d0e5b4361c34881a3b81347aac48738cb5b9af0
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1960
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Diffstat (limited to 'src/device/oprom')
49 files changed, 21391 insertions, 0 deletions
diff --git a/src/device/oprom/Makefile.inc b/src/device/oprom/Makefile.inc new file mode 100644 index 0000000000..aa4a74d4d8 --- /dev/null +++ b/src/device/oprom/Makefile.inc @@ -0,0 +1,23 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2007-2010 coresystems GmbH +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; version 2 of the License. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +subdirs-$(CONFIG_PCI_OPTION_ROM_RUN_YABEL) += x86emu +subdirs-$(CONFIG_PCI_OPTION_ROM_RUN_YABEL) += yabel +subdirs-$(CONFIG_PCI_OPTION_ROM_RUN_REALMODE) += realmode + diff --git a/src/device/oprom/include/vbe.h b/src/device/oprom/include/vbe.h new file mode 100644 index 0000000000..ab26d59bf6 --- /dev/null +++ b/src/device/oprom/include/vbe.h @@ -0,0 +1,117 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net> + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +// these structs are for input from and output to OF +typedef struct { + u8 display_type; // 0=NONE, 1= analog, 2=digital + u16 screen_width; + u16 screen_height; + u16 screen_linebytes; // bytes per line in framebuffer, may be more than screen_width + u8 color_depth; // color depth in bpp + u32 framebuffer_address; + u8 edid_block_zero[128]; +} __attribute__ ((__packed__)) screen_info_t; + +typedef struct { + u8 signature[4]; + u16 size_reserved; + u8 monitor_number; + u16 max_screen_width; + u8 color_depth; +} __attribute__ ((__packed__)) screen_info_input_t; + +// these structs only store a subset of the VBE defined fields +// only those needed. +typedef struct { + char signature[4]; + u16 version; + u8 *oem_string_ptr; + u32 capabilities; + u16 video_mode_list[256]; // lets hope we never have more than 256 video modes... + u16 total_memory; +} vbe_info_t; + +typedef struct { + u16 mode_attributes; // 00 + u8 win_a_attributes; // 02 + u8 win_b_attributes; // 03 + u16 win_granularity; // 04 + u16 win_size; // 06 + u16 win_a_segment; // 08 + u16 win_b_segment; // 0a + u32 win_func_ptr; // 0c + u16 bytes_per_scanline; // 10 + u16 x_resolution; // 12 + u16 y_resolution; // 14 + u8 x_charsize; // 16 + u8 y_charsize; // 17 + u8 number_of_planes; // 18 + u8 bits_per_pixel; // 19 + u8 number_of_banks; // 20 + u8 memory_model; // 21 + u8 bank_size; // 22 + u8 number_of_image_pages; // 23 + u8 reserved_page; + u8 red_mask_size; + u8 red_mask_pos; + u8 green_mask_size; + u8 green_mask_pos; + u8 blue_mask_size; + u8 blue_mask_pos; + u8 reserved_mask_size; + u8 reserved_mask_pos; + u8 direct_color_mode_info; + u32 phys_base_ptr; + u32 offscreen_mem_offset; + u16 offscreen_mem_size; + u8 reserved[206]; +} __attribute__ ((__packed__)) vesa_mode_info_t; + +typedef struct { + u16 video_mode; + union { + vesa_mode_info_t vesa; + u8 mode_info_block[256]; + }; + // our crap + //u16 attributes; + //u16 linebytes; + //u16 x_resolution; + //u16 y_resolution; + //u8 x_charsize; + //u8 y_charsize; + //u8 bits_per_pixel; + //u8 memory_model; + //u32 framebuffer_address; +} vbe_mode_info_t; + +typedef struct { + u8 port_number; // i.e. monitor number + u8 edid_transfer_time; + u8 ddc_level; + u8 edid_block_zero[128]; +} vbe_ddc_info_t; + +struct lb_framebuffer; + +void vbe_set_graphics(void); +// A way to check if mode information collected by vbe_set_graphics is valid +// and fill_lb_framebuffer will have real information to use. +int vbe_mode_info_valid(void); +void vbe_textmode_console(void); +void fill_lb_framebuffer(struct lb_framebuffer *framebuffer); + +#define VESA_GET_INFO 0x4f00 +#define VESA_GET_MODE_INFO 0x4f01 +#define VESA_SET_MODE 0x4f02 + diff --git a/src/device/oprom/include/x86emu/fpu_regs.h b/src/device/oprom/include/x86emu/fpu_regs.h new file mode 100644 index 0000000000..7c7df8562b --- /dev/null +++ b/src/device/oprom/include/x86emu/fpu_regs.h @@ -0,0 +1,115 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for FPU register definitions. +* +****************************************************************************/ + +#ifndef __X86EMU_FPU_REGS_H +#define __X86EMU_FPU_REGS_H + +#ifdef X86_FPU_SUPPORT + +#pragma pack(1) + +/* Basic 8087 register can hold any of the following values: */ + +union x86_fpu_reg_u { + s8 tenbytes[10]; + double dval; + float fval; + s16 sval; + s32 lval; + }; + +struct x86_fpu_reg { + union x86_fpu_reg_u reg; + char tag; + }; + +/* + * Since we are not going to worry about the problems of aliasing + * registers, every time a register is modified, its result type is + * set in the tag fields for that register. If some operation + * attempts to access the type in a way inconsistent with its current + * storage format, then we flag the operation. If common, we'll + * attempt the conversion. + */ + +#define X86_FPU_VALID 0x80 +#define X86_FPU_REGTYP(r) ((r) & 0x7F) + +#define X86_FPU_WORD 0x0 +#define X86_FPU_SHORT 0x1 +#define X86_FPU_LONG 0x2 +#define X86_FPU_FLOAT 0x3 +#define X86_FPU_DOUBLE 0x4 +#define X86_FPU_LDBL 0x5 +#define X86_FPU_BSD 0x6 + +#define X86_FPU_STKTOP 0 + +struct x86_fpu_registers { + struct x86_fpu_reg x86_fpu_stack[8]; + int x86_fpu_flags; + int x86_fpu_config; /* rounding modes, etc. */ + short x86_fpu_tos, x86_fpu_bos; + }; + +#pragma pack() + +/* + * There are two versions of the following macro. + * + * One version is for opcode D9, for which there are more than 32 + * instructions encoded in the second byte of the opcode. + * + * The other version, deals with all the other 7 i87 opcodes, for + * which there are only 32 strings needed to describe the + * instructions. + */ + +#endif /* X86_FPU_SUPPORT */ + +#if CONFIG_X86EMU_DEBUG +# define DECODE_PRINTINSTR32(t,mod,rh,rl) \ + DECODE_PRINTF(t[(mod<<3)+(rh)]); +# define DECODE_PRINTINSTR256(t,mod,rh,rl) \ + DECODE_PRINTF(t[(mod<<6)+(rh<<3)+(rl)]); +#else +# define DECODE_PRINTINSTR32(t,mod,rh,rl) +# define DECODE_PRINTINSTR256(t,mod,rh,rl) +#endif + +#endif /* __X86EMU_FPU_REGS_H */ diff --git a/src/device/oprom/include/x86emu/regs.h b/src/device/oprom/include/x86emu/regs.h new file mode 100644 index 0000000000..d738974d4b --- /dev/null +++ b/src/device/oprom/include/x86emu/regs.h @@ -0,0 +1,372 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for x86 register definitions. +* +****************************************************************************/ +/* $XFree86: xc/extras/x86emu/include/x86emu/regs.h,v 1.3 2001/10/28 03:32:25 tsi Exp $ */ + +#ifndef __X86EMU_REGS_H +#define __X86EMU_REGS_H + +/*---------------------- Macros and type definitions ----------------------*/ + +#pragma pack(1) + +/* + * General EAX, EBX, ECX, EDX type registers. Note that for + * portability, and speed, the issue of byte swapping is not addressed + * in the registers. All registers are stored in the default format + * available on the host machine. The only critical issue is that the + * registers should line up EXACTLY in the same manner as they do in + * the 386. That is: + * + * EAX & 0xff === AL + * EAX & 0xffff == AX + * + * etc. The result is that alot of the calculations can then be + * done using the native instruction set fully. + */ + +#ifdef __BIG_ENDIAN__ + +typedef struct { + u32 e_reg; + } I32_reg_t; + +typedef struct { + u16 filler0, x_reg; + } I16_reg_t; + +typedef struct { + u8 filler0, filler1, h_reg, l_reg; + } I8_reg_t; + +#else /* !__BIG_ENDIAN__ */ + +typedef struct { + u32 e_reg; + } I32_reg_t; + +typedef struct { + u16 x_reg; + } I16_reg_t; + +typedef struct { + u8 l_reg, h_reg; + } I8_reg_t; + +#endif /* BIG_ENDIAN */ + +typedef union { + I32_reg_t I32_reg; + I16_reg_t I16_reg; + I8_reg_t I8_reg; + } i386_general_register; + +struct i386_general_regs { + i386_general_register A, B, C, D; + }; + +typedef struct i386_general_regs Gen_reg_t; + +struct i386_special_regs { + i386_general_register SP, BP, SI, DI, IP; + u32 FLAGS; + }; + +/* + * Segment registers here represent the 16 bit quantities + * CS, DS, ES, SS. + */ + +struct i386_segment_regs { + u16 CS, DS, SS, ES, FS, GS; + }; + +/* 8 bit registers */ +#define R_AH gen.A.I8_reg.h_reg +#define R_AL gen.A.I8_reg.l_reg +#define R_BH gen.B.I8_reg.h_reg +#define R_BL gen.B.I8_reg.l_reg +#define R_CH gen.C.I8_reg.h_reg +#define R_CL gen.C.I8_reg.l_reg +#define R_DH gen.D.I8_reg.h_reg +#define R_DL gen.D.I8_reg.l_reg + +/* 16 bit registers */ +#define R_AX gen.A.I16_reg.x_reg +#define R_BX gen.B.I16_reg.x_reg +#define R_CX gen.C.I16_reg.x_reg +#define R_DX gen.D.I16_reg.x_reg + +/* 32 bit extended registers */ +#define R_EAX gen.A.I32_reg.e_reg +#define R_EBX gen.B.I32_reg.e_reg +#define R_ECX gen.C.I32_reg.e_reg +#define R_EDX gen.D.I32_reg.e_reg + +/* special registers */ +#define R_SP spc.SP.I16_reg.x_reg +#define R_BP spc.BP.I16_reg.x_reg +#define R_SI spc.SI.I16_reg.x_reg +#define R_DI spc.DI.I16_reg.x_reg +#define R_IP spc.IP.I16_reg.x_reg +#define R_FLG spc.FLAGS + +/* special registers */ +#define R_SP spc.SP.I16_reg.x_reg +#define R_BP spc.BP.I16_reg.x_reg +#define R_SI spc.SI.I16_reg.x_reg +#define R_DI spc.DI.I16_reg.x_reg +#define R_IP spc.IP.I16_reg.x_reg +#define R_FLG spc.FLAGS + +/* special registers */ +#define R_ESP spc.SP.I32_reg.e_reg +#define R_EBP spc.BP.I32_reg.e_reg +#define R_ESI spc.SI.I32_reg.e_reg +#define R_EDI spc.DI.I32_reg.e_reg +#define R_EIP spc.IP.I32_reg.e_reg +#define R_EFLG spc.FLAGS + +/* segment registers */ +#define R_CS seg.CS +#define R_DS seg.DS +#define R_SS seg.SS +#define R_ES seg.ES +#define R_FS seg.FS +#define R_GS seg.GS + +/* flag conditions */ +#define FB_CF 0x0001 /* CARRY flag */ +#define FB_PF 0x0004 /* PARITY flag */ +#define FB_AF 0x0010 /* AUX flag */ +#define FB_ZF 0x0040 /* ZERO flag */ +#define FB_SF 0x0080 /* SIGN flag */ +#define FB_TF 0x0100 /* TRAP flag */ +#define FB_IF 0x0200 /* INTERRUPT ENABLE flag */ +#define FB_DF 0x0400 /* DIR flag */ +#define FB_OF 0x0800 /* OVERFLOW flag */ + +/* 80286 and above always have bit#1 set */ +#define F_ALWAYS_ON (0x0002) /* flag bits always on */ + +/* + * Define a mask for only those flag bits we will ever pass back + * (via PUSHF) + */ +#define F_MSK (FB_CF|FB_PF|FB_AF|FB_ZF|FB_SF|FB_TF|FB_IF|FB_DF|FB_OF) + +/* following bits masked in to a 16bit quantity */ + +#define F_CF 0x0001 /* CARRY flag */ +#define F_PF 0x0004 /* PARITY flag */ +#define F_AF 0x0010 /* AUX flag */ +#define F_ZF 0x0040 /* ZERO flag */ +#define F_SF 0x0080 /* SIGN flag */ +#define F_TF 0x0100 /* TRAP flag */ +#define F_IF 0x0200 /* INTERRUPT ENABLE flag */ +#define F_DF 0x0400 /* DIR flag */ +#define F_OF 0x0800 /* OVERFLOW flag */ + +#define TOGGLE_FLAG(flag) (M.x86.R_FLG ^= (flag)) +#define SET_FLAG(flag) (M.x86.R_FLG |= (flag)) +#define CLEAR_FLAG(flag) (M.x86.R_FLG &= ~(flag)) +#define ACCESS_FLAG(flag) (M.x86.R_FLG & (flag)) +#define CLEARALL_FLAG(m) (M.x86.R_FLG = 0) + +#define CONDITIONAL_SET_FLAG(COND,FLAG) \ + if (COND) SET_FLAG(FLAG); else CLEAR_FLAG(FLAG) + +#define F_PF_CALC 0x010000 /* PARITY flag has been calced */ +#define F_ZF_CALC 0x020000 /* ZERO flag has been calced */ +#define F_SF_CALC 0x040000 /* SIGN flag has been calced */ + +#define F_ALL_CALC 0xff0000 /* All have been calced */ + +/* + * Emulator machine state. + * Segment usage control. + */ +#define SYSMODE_SEG_DS_SS 0x00000001 +#define SYSMODE_SEGOVR_CS 0x00000002 +#define SYSMODE_SEGOVR_DS 0x00000004 +#define SYSMODE_SEGOVR_ES 0x00000008 +#define SYSMODE_SEGOVR_FS 0x00000010 +#define SYSMODE_SEGOVR_GS 0x00000020 +#define SYSMODE_SEGOVR_SS 0x00000040 +#define SYSMODE_PREFIX_REPE 0x00000080 +#define SYSMODE_PREFIX_REPNE 0x00000100 +#define SYSMODE_PREFIX_DATA 0x00000200 +#define SYSMODE_PREFIX_ADDR 0x00000400 +//phueper: for REP(E|NE) Instructions, we need to decide wether it should be using +//the 32bit ECX register as or the 16bit CX register as count register +#define SYSMODE_32BIT_REP 0x00000800 +#define SYSMODE_INTR_PENDING 0x10000000 +#define SYSMODE_EXTRN_INTR 0x20000000 +#define SYSMODE_HALTED 0x40000000 + +#define SYSMODE_SEGMASK (SYSMODE_SEG_DS_SS | \ + SYSMODE_SEGOVR_CS | \ + SYSMODE_SEGOVR_DS | \ + SYSMODE_SEGOVR_ES | \ + SYSMODE_SEGOVR_FS | \ + SYSMODE_SEGOVR_GS | \ + SYSMODE_SEGOVR_SS) +#define SYSMODE_CLRMASK (SYSMODE_SEG_DS_SS | \ + SYSMODE_SEGOVR_CS | \ + SYSMODE_SEGOVR_DS | \ + SYSMODE_SEGOVR_ES | \ + SYSMODE_SEGOVR_FS | \ + SYSMODE_SEGOVR_GS | \ + SYSMODE_SEGOVR_SS | \ + SYSMODE_PREFIX_DATA | \ + SYSMODE_PREFIX_ADDR | \ + SYSMODE_32BIT_REP) + +#define INTR_SYNCH 0x1 +#define INTR_ASYNCH 0x2 +#define INTR_HALTED 0x4 + +typedef struct { + struct i386_general_regs gen; + struct i386_special_regs spc; + struct i386_segment_regs seg; + /* + * MODE contains information on: + * REPE prefix 2 bits repe,repne + * SEGMENT overrides 5 bits normal,DS,SS,CS,ES + * Delayed flag set 3 bits (zero, signed, parity) + * reserved 6 bits + * interrupt # 8 bits instruction raised interrupt + * BIOS video segregs 4 bits + * Interrupt Pending 1 bits + * Extern interrupt 1 bits + * Halted 1 bits + */ + u32 mode; + volatile int intr; /* mask of pending interrupts */ + volatile int debug; +#if CONFIG_X86EMU_DEBUG + int check; + u16 saved_ip; + u16 saved_cs; + int enc_pos; + int enc_str_pos; + char decode_buf[32]; /* encoded byte stream */ + char decoded_buf[256]; /* disassembled strings */ +#endif + u8 intno; + u8 __pad[3]; + } X86EMU_regs; + +/**************************************************************************** +REMARKS: +Structure maintaining the emulator machine state. + +MEMBERS: +mem_base - Base real mode memory for the emulator +abseg - Base for the absegment +mem_size - Size of the real mode memory block for the emulator +private - private data pointer +x86 - X86 registers +****************************************************************************/ +typedef struct { + unsigned long mem_base; + unsigned long mem_size; + unsigned long abseg; + void* private; + X86EMU_regs x86; + } X86EMU_sysEnv; + +#pragma pack() + +/*----------------------------- Global Variables --------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + +/* Global emulator machine state. + * + * We keep it global to avoid pointer dereferences in the code for speed. + */ + +extern X86EMU_sysEnv _X86EMU_env; +#define M _X86EMU_env + +#define X86_EAX M.x86.R_EAX +#define X86_EBX M.x86.R_EBX +#define X86_ECX M.x86.R_ECX +#define X86_EDX M.x86.R_EDX +#define X86_ESI M.x86.R_ESI +#define X86_EDI M.x86.R_EDI +#define X86_EBP M.x86.R_EBP +#define X86_EIP M.x86.R_EIP +#define X86_ESP M.x86.R_ESP +#define X86_EFLAGS M.x86.R_EFLG + +#define X86_FLAGS M.x86.R_FLG +#define X86_AX M.x86.R_AX +#define X86_BX M.x86.R_BX +#define X86_CX M.x86.R_CX +#define X86_DX M.x86.R_DX +#define X86_SI M.x86.R_SI +#define X86_DI M.x86.R_DI +#define X86_BP M.x86.R_BP +#define X86_IP M.x86.R_IP +#define X86_SP M.x86.R_SP +#define X86_CS M.x86.R_CS +#define X86_DS M.x86.R_DS +#define X86_ES M.x86.R_ES +#define X86_SS M.x86.R_SS +#define X86_FS M.x86.R_FS +#define X86_GS M.x86.R_GS + +#define X86_AL M.x86.R_AL +#define X86_BL M.x86.R_BL +#define X86_CL M.x86.R_CL +#define X86_DL M.x86.R_DL + +#define X86_AH M.x86.R_AH +#define X86_BH M.x86.R_BH +#define X86_CH M.x86.R_CH +#define X86_DH M.x86.R_DH + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif + +#endif /* __X86EMU_REGS_H */ diff --git a/src/device/oprom/include/x86emu/types.h b/src/device/oprom/include/x86emu/types.h new file mode 100644 index 0000000000..5485eeaedf --- /dev/null +++ b/src/device/oprom/include/x86emu/types.h @@ -0,0 +1,89 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for x86 emulator type definitions. +* +****************************************************************************/ + +/* $XFree86: xc/extras/x86emu/include/x86emu/types.h,v 1.4 2000/09/26 15:56:44 tsi Exp $ */ + +#ifndef __X86EMU_TYPES_H +#define __X86EMU_TYPES_H + +//#ifndef IN_MODULE +//#include <sys/types.h> +//#endif + +/* + * The following kludge is an attempt to work around typedef conflicts with + * <sys/types.h>. + */ +#define u8 x86emuu8 +#define u16 x86emuu16 +#define u32 x86emuu32 +#define u64 x86emuu64 +#define s8 x86emus8 +#define s16 x86emus16 +#define s32 x86emus32 +#define s64 x86emus64 +#define uint x86emuuint +#define sint x86emusint + +/*---------------------- Macros and type definitions ----------------------*/ + +/* Currently only for Linux/32bit */ +#if defined(__GNUC__) && !defined(NO_LONG_LONG) +#define __HAS_LONG_LONG__ +#endif + +typedef unsigned char u8; +typedef unsigned short u16; +typedef unsigned int u32; +#ifdef __HAS_LONG_LONG__ +typedef unsigned long long u64; +#endif + +typedef signed char s8; +typedef signed short s16; +typedef signed int s32; +#ifdef __HAS_LONG_LONG__ +typedef signed long long s64; +#endif + +typedef unsigned int uint; +typedef signed int sint; + +typedef u16 X86EMU_pioAddr; + +#endif /* __X86EMU_TYPES_H */ diff --git a/src/device/oprom/include/x86emu/x86emu.h b/src/device/oprom/include/x86emu/x86emu.h new file mode 100644 index 0000000000..3ceee4985b --- /dev/null +++ b/src/device/oprom/include/x86emu/x86emu.h @@ -0,0 +1,197 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for public specific functions. +* Any application linking against us should only +* include this header +* +****************************************************************************/ +/* $XFree86: xc/extras/x86emu/include/x86emu.h,v 1.2 2000/11/21 23:10:25 tsi Exp $ */ + +#ifndef __X86EMU_X86EMU_H +#define __X86EMU_X86EMU_H + +#include <stddef.h> +#include <console/console.h> +#if CONFIG_X86EMU_DEBUG +#define DEBUG +#endif + +#include "types.h" +#define X86API +#define X86APIP * +#include "regs.h" + +/*---------------------- Macros and type definitions ----------------------*/ + +#pragma pack(1) + +/**************************************************************************** +REMARKS: +Data structure containing ponters to programmed I/O functions used by the +emulator. This is used so that the user program can hook all programmed +I/O for the emulator to handled as necessary by the user program. By +default the emulator contains simple functions that do not do access the +hardware in any way. To allow the emualtor access the hardware, you will +need to override the programmed I/O functions using the X86EMU_setupPioFuncs +function. + +HEADER: +x86emu.h + +MEMBERS: +inb - Function to read a byte from an I/O port +inw - Function to read a word from an I/O port +inl - Function to read a dword from an I/O port +outb - Function to write a byte to an I/O port +outw - Function to write a word to an I/O port +outl - Function to write a dword to an I/O port +****************************************************************************/ +typedef struct { + u8 (X86APIP inb)(X86EMU_pioAddr addr); + u16 (X86APIP inw)(X86EMU_pioAddr addr); + u32 (X86APIP inl)(X86EMU_pioAddr addr); + void (X86APIP outb)(X86EMU_pioAddr addr, u8 val); + void (X86APIP outw)(X86EMU_pioAddr addr, u16 val); + void (X86APIP outl)(X86EMU_pioAddr addr, u32 val); + } X86EMU_pioFuncs; + +/**************************************************************************** +REMARKS: +Data structure containing ponters to memory access functions used by the +emulator. This is used so that the user program can hook all memory +access functions as necessary for the emulator. By default the emulator +contains simple functions that only access the internal memory of the +emulator. If you need specialised functions to handle access to different +types of memory (ie: hardware framebuffer accesses and BIOS memory access +etc), you will need to override this using the X86EMU_setupMemFuncs +function. + +HEADER: +x86emu.h + +MEMBERS: +rdb - Function to read a byte from an address +rdw - Function to read a word from an address +rdl - Function to read a dword from an address +wrb - Function to write a byte to an address +wrw - Function to write a word to an address +wrl - Function to write a dword to an address +****************************************************************************/ +typedef struct { + u8 (X86APIP rdb)(u32 addr); + u16 (X86APIP rdw)(u32 addr); + u32 (X86APIP rdl)(u32 addr); + void (X86APIP wrb)(u32 addr, u8 val); + void (X86APIP wrw)(u32 addr, u16 val); + void (X86APIP wrl)(u32 addr, u32 val); + } X86EMU_memFuncs; + +/**************************************************************************** + Here are the default memory read and write + function in case they are needed as fallbacks. +***************************************************************************/ +extern u8 X86API rdb(u32 addr); +extern u16 X86API rdw(u32 addr); +extern u32 X86API rdl(u32 addr); +extern void X86API wrb(u32 addr, u8 val); +extern void X86API wrw(u32 addr, u16 val); +extern void X86API wrl(u32 addr, u32 val); + +#pragma pack() + +/*--------------------- type definitions -----------------------------------*/ + +typedef void (X86APIP X86EMU_intrFuncs)(int num); +extern X86EMU_intrFuncs _X86EMU_intrTab[256]; + +/*-------------------------- Function Prototypes --------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + +void X86EMU_setupMemFuncs(X86EMU_memFuncs *funcs); +void X86EMU_setupPioFuncs(X86EMU_pioFuncs *funcs); +void X86EMU_setupIntrFuncs(X86EMU_intrFuncs funcs[]); +void X86EMU_prepareForInt(int num); + +void X86EMU_setMemBase(void *base, size_t size); + +/* decode.c */ + +void X86EMU_exec(void); +void X86EMU_halt_sys(void); + +#if CONFIG_X86EMU_DEBUG +#define HALT_SYS() \ + printf("halt_sys: in %s\n", __func__); \ + X86EMU_halt_sys(); +#else +#define HALT_SYS() X86EMU_halt_sys() +#endif + +/* Debug options */ + +#define DEBUG_DECODE_F 0x000001 /* print decoded instruction */ +#define DEBUG_TRACE_F 0x000002 /* dump regs before/after execution */ +#define DEBUG_STEP_F 0x000004 +#define DEBUG_DISASSEMBLE_F 0x000008 +#define DEBUG_BREAK_F 0x000010 +#define DEBUG_SVC_F 0x000020 +#define DEBUG_FS_F 0x000080 +#define DEBUG_PROC_F 0x000100 +#define DEBUG_SYSINT_F 0x000200 /* bios system interrupts. */ +#define DEBUG_TRACECALL_F 0x000400 +#define DEBUG_INSTRUMENT_F 0x000800 +#define DEBUG_MEM_TRACE_F 0x001000 +#define DEBUG_IO_TRACE_F 0x002000 +#define DEBUG_TRACECALL_REGS_F 0x004000 +#define DEBUG_DECODE_NOPRINT_F 0x008000 +#define DEBUG_SAVE_IP_CS_F 0x010000 +#define DEBUG_TRACEJMP_F 0x020000 +#define DEBUG_TRACEJMP_REGS_F 0x040000 +#define DEBUG_SYS_F (DEBUG_SVC_F|DEBUG_FS_F|DEBUG_PROC_F) + +void X86EMU_trace_regs(void); +void X86EMU_trace_xregs(void); +void X86EMU_dump_memory(u16 seg, u16 off, u32 amt); +int X86EMU_trace_on(void); +int X86EMU_trace_off(void); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif + +#endif /* __X86EMU_X86EMU_H */ diff --git a/src/device/oprom/realmode/Makefile.inc b/src/device/oprom/realmode/Makefile.inc new file mode 100644 index 0000000000..fafeb2c573 --- /dev/null +++ b/src/device/oprom/realmode/Makefile.inc @@ -0,0 +1,23 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2012 secunet Security Networks AG +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; version 2 of the License. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +ramstage-$(CONFIG_PCI_OPTION_ROM_RUN_REALMODE) += x86.c +ramstage-$(CONFIG_PCI_OPTION_ROM_RUN_REALMODE) += x86_asm.S +ramstage-$(CONFIG_PCI_OPTION_ROM_RUN_REALMODE) += x86_interrupts.c + diff --git a/src/device/oprom/realmode/x86.c b/src/device/oprom/realmode/x86.c new file mode 100644 index 0000000000..6a82a691b5 --- /dev/null +++ b/src/device/oprom/realmode/x86.c @@ -0,0 +1,490 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007 Advanced Micro Devices, Inc. + * Copyright (C) 2009-2010 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <device/pci.h> +#include <string.h> + +#include <arch/io.h> +#include <arch/registers.h> +#include <console/console.h> +#include <arch/interrupt.h> +#include <cbfs.h> +#include <delay.h> +#include <pc80/i8259.h> +#include "x86.h" +#include "vbe.h" +#include <lib/jpeg.h> +/* we use x86emu's register file representation */ +#include <x86emu/regs.h> + +/* to have a common register file for interrupt handlers */ +X86EMU_sysEnv _X86EMU_env; + +void (*realmode_call)(u32 addr, u32 eax, u32 ebx, u32 ecx, u32 edx, + u32 esi, u32 edi) __attribute__((regparm(0))) = + (void *)&__realmode_call; + +void (*realmode_interrupt)(u32 intno, u32 eax, u32 ebx, u32 ecx, u32 edx, + u32 esi, u32 edi) __attribute__((regparm(0))) = + (void *)&__realmode_interrupt; + +static void setup_rombios(void) +{ + const char date[] = "06/11/99"; + memcpy((void *)0xffff5, &date, 8); + + const char ident[] = "PCI_ISA"; + memcpy((void *)0xfffd9, &ident, 7); + + /* system model: IBM-AT */ + write8(0xffffe, 0xfc); +} + +static int (*intXX_handler[256])(void) = { NULL }; + +static int intXX_exception_handler(void) +{ + /* compatibility shim */ + struct eregs reg_info = { + .eax=X86_EAX, + .ecx=X86_ECX, + .edx=X86_EDX, + .ebx=X86_EBX, + .esp=X86_ESP, + .ebp=X86_EBP, + .esi=X86_ESI, + .edi=X86_EDI, + .vector=M.x86.intno, + .error_code=0, // FIXME: fill in + .eip=X86_EIP, + .cs=X86_CS, + .eflags=X86_EFLAGS + }; + struct eregs *regs = ®_info; + + printk(BIOS_INFO, "Oops, exception %d while executing option rom\n", + regs->vector); + x86_exception(regs); // Call coreboot exception handler + + return 0; // Never really returns +} + +static int intXX_unknown_handler(void) +{ + printk(BIOS_INFO, "Unsupported software interrupt #0x%x eax 0x%x\n", + M.x86.intno, X86_EAX); + + return -1; +} + +/* setup interrupt handlers for mainboard */ +void mainboard_interrupt_handlers(int intXX, void *intXX_func) +{ + intXX_handler[intXX] = intXX_func; +} + +static void setup_interrupt_handlers(void) +{ + int i; + + /* The first 16 intXX functions are not BIOS services, + * but the CPU-generated exceptions ("hardware interrupts") + */ + for (i = 0; i < 0x10; i++) + intXX_handler[i] = &intXX_exception_handler; + + /* Mark all other intXX calls as unknown first */ + for (i = 0x10; i < 0x100; i++) + { + /* If the mainboard_interrupt_handler isn't called first. + */ + if(!intXX_handler[i]) + { + /* Now set the default functions that are actually + * needed to initialize the option roms. This is + * very slick, as it allows us to implement mainboard + * specific interrupt handlers, such as the int15. + */ + switch (i) { + case 0x10: + intXX_handler[0x10] = &int10_handler; + break; + case 0x12: + intXX_handler[0x12] = &int12_handler; + break; + case 0x16: + intXX_handler[0x16] = &int16_handler; + break; + case 0x1a: + intXX_handler[0x1a] = &int1a_handler; + break; + default: + intXX_handler[i] = &intXX_unknown_handler; + break; + } + } + } +} + +static void write_idt_stub(void *target, u8 intnum) +{ + unsigned char *codeptr; + codeptr = (unsigned char *) target; + memcpy(codeptr, &__idt_handler, (size_t)&__idt_handler_size); + codeptr[3] = intnum; /* modify int# in the code stub. */ +} + +static void setup_realmode_idt(void) +{ + struct realmode_idt *idts = (struct realmode_idt *) 0; + int i; + + /* Copy IDT stub code for each interrupt. This might seem wasteful + * but it is really simple + */ + for (i = 0; i < 256; i++) { + idts[i].cs = 0; + idts[i].offset = 0x1000 + (i * (u32)&__idt_handler_size); + write_idt_stub((void *)((u32 )idts[i].offset), i); + } + + /* Many option ROMs use the hard coded interrupt entry points in the + * system bios. So install them at the known locations. + */ + + /* int42 is the relocated int10 */ + write_idt_stub((void *)0xff065, 0x42); + /* BIOS Int 11 Handler F000:F84D */ + write_idt_stub((void *)0xff84d, 0x11); + /* BIOS Int 12 Handler F000:F841 */ + write_idt_stub((void *)0xff841, 0x12); + /* BIOS Int 13 Handler F000:EC59 */ + write_idt_stub((void *)0xfec59, 0x13); + /* BIOS Int 14 Handler F000:E739 */ + write_idt_stub((void *)0xfe739, 0x14); + /* BIOS Int 15 Handler F000:F859 */ + write_idt_stub((void *)0xff859, 0x15); + /* BIOS Int 16 Handler F000:E82E */ + write_idt_stub((void *)0xfe82e, 0x16); + /* BIOS Int 17 Handler F000:EFD2 */ + write_idt_stub((void *)0xfefd2, 0x17); + /* ROM BIOS Int 1A Handler F000:FE6E */ + write_idt_stub((void *)0xffe6e, 0x1a); +} + +#if CONFIG_FRAMEBUFFER_SET_VESA_MODE +vbe_mode_info_t mode_info; +static int mode_info_valid; + +int vbe_mode_info_valid(void) +{ + return mode_info_valid; +} + +static u8 vbe_get_mode_info(vbe_mode_info_t * mi) +{ + printk(BIOS_DEBUG, "VBE: Getting information about VESA mode %04x\n", + mi->video_mode); + char *buffer = (char *)&__buffer; + u16 buffer_seg = (((unsigned long)buffer) >> 4) & 0xff00; + u16 buffer_adr = ((unsigned long)buffer) & 0xffff; + realmode_interrupt(0x10, VESA_GET_MODE_INFO, 0x0000, + mi->video_mode, 0x0000, buffer_seg, buffer_adr); + memcpy(mi->mode_info_block, buffer, sizeof(vbe_mode_info_t)); + mode_info_valid = 1; + return 0; +} + +static u8 vbe_set_mode(vbe_mode_info_t * mi) +{ + printk(BIOS_DEBUG, "VBE: Setting VESA mode %04x\n", mi->video_mode); + // request linear framebuffer mode + mi->video_mode |= (1 << 14); + // request clearing of framebuffer + mi->video_mode &= ~(1 << 15); + realmode_interrupt(0x10, VESA_SET_MODE, mi->video_mode, + 0x0000, 0x0000, 0x0000, 0x0000); + return 0; +} + +/* These two functions could probably even be generic between + * yabel and x86 native. TBD later. + */ +void vbe_set_graphics(void) +{ + mode_info.video_mode = (1 << 14) | CONFIG_FRAMEBUFFER_VESA_MODE; + vbe_get_mode_info(&mode_info); + unsigned char *framebuffer = + (unsigned char *)mode_info.vesa.phys_base_ptr; + printk(BIOS_DEBUG, "VBE: resolution: %dx%d@%d\n", + le16_to_cpu(mode_info.vesa.x_resolution), + le16_to_cpu(mode_info.vesa.y_resolution), + mode_info.vesa.bits_per_pixel); + printk(BIOS_DEBUG, "VBE: framebuffer: %p\n", framebuffer); + if (!framebuffer) { + printk(BIOS_DEBUG, "VBE: Mode does not support linear " + "framebuffer\n"); + return; + } + + vbe_set_mode(&mode_info); +#if CONFIG_BOOTSPLASH + struct jpeg_decdata *decdata; + decdata = malloc(sizeof(*decdata)); + unsigned char *jpeg = cbfs_find_file("bootsplash.jpg", + CBFS_TYPE_BOOTSPLASH); + if (!jpeg) { + printk(BIOS_DEBUG, "VBE: No bootsplash found.\n"); + return; + } + int ret = 0; + ret = jpeg_decode(jpeg, framebuffer, 1024, 768, 16, decdata); +#endif +} + +void vbe_textmode_console(void) +{ + delay(2); + realmode_interrupt(0x10, 0x0003, 0x0000, 0x0000, + 0x0000, 0x0000, 0x0000); +} + +void fill_lb_framebuffer(struct lb_framebuffer *framebuffer) +{ + framebuffer->physical_address = mode_info.vesa.phys_base_ptr; + + framebuffer->x_resolution = le16_to_cpu(mode_info.vesa.x_resolution); + framebuffer->y_resolution = le16_to_cpu(mode_info.vesa.y_resolution); + framebuffer->bytes_per_line = + le16_to_cpu(mode_info.vesa.bytes_per_scanline); + framebuffer->bits_per_pixel = mode_info.vesa.bits_per_pixel; + + framebuffer->red_mask_pos = mode_info.vesa.red_mask_pos; + framebuffer->red_mask_size = mode_info.vesa.red_mask_size; + + framebuffer->green_mask_pos = mode_info.vesa.green_mask_pos; + framebuffer->green_mask_size = mode_info.vesa.green_mask_size; + + framebuffer->blue_mask_pos = mode_info.vesa.blue_mask_pos; + framebuffer->blue_mask_size = mode_info.vesa.blue_mask_size; + + framebuffer->reserved_mask_pos = mode_info.vesa.reserved_mask_pos; + framebuffer->reserved_mask_size = mode_info.vesa.reserved_mask_size; +} +#endif + +void run_bios(struct device *dev, unsigned long addr) +{ + u32 num_dev = (dev->bus->secondary << 8) | dev->path.pci.devfn; + + /* Setting up required hardware. + * Removing this will cause random illegal instruction exceptions + * in some option roms. + */ + setup_i8259(); + + /* Set up some legacy information in the F segment */ + setup_rombios(); + + /* Set up C interrupt handlers */ + setup_interrupt_handlers(); + + /* Set up real-mode IDT */ + setup_realmode_idt(); + + memcpy(REALMODE_BASE, &__realmode_code, (size_t)&__realmode_code_size); + printk(BIOS_SPEW, "Real mode stub @%p: %d bytes\n", REALMODE_BASE, + (u32)&__realmode_code_size); + + printk(BIOS_DEBUG, "Calling Option ROM...\n"); + /* TODO ES:DI Pointer to System BIOS PnP Installation Check Structure */ + /* Option ROM entry point is at OPROM start + 3 */ + realmode_call(addr + 0x0003, num_dev, 0xffff, 0x0000, 0xffff, 0x0, 0x0); + printk(BIOS_DEBUG, "... Option ROM returned.\n"); + +#if CONFIG_FRAMEBUFFER_SET_VESA_MODE + vbe_set_graphics(); +#endif +} + +#if CONFIG_GEODE_VSA +#include <cpu/amd/lxdef.h> +#include <cpu/amd/vr.h> +#include <cbfs.h> + +#define VSA2_BUFFER 0x60000 +#define VSA2_ENTRY_POINT 0x60020 + +// TODO move to a header file. +void do_vsmbios(void); + +/* VSA virtual register helper */ +static u32 VSA_vrRead(u16 classIndex) +{ + u32 eax, ebx, ecx, edx; + asm volatile ( + "movw $0x0AC1C, %%dx\n" + "orl $0x0FC530000, %%eax\n" + "outl %%eax, %%dx\n" + "addb $2, %%dl\n" + "inw %%dx, %%ax\n" + : "=a" (eax), "=b"(ebx), "=c"(ecx), "=d"(edx) + : "a"(classIndex) + ); + + return eax; +} + +void do_vsmbios(void) +{ + printk(BIOS_DEBUG, "Preparing for VSA...\n"); + + /* Set up C interrupt handlers */ + setup_interrupt_handlers(); + + /* Setting up realmode IDT */ + setup_realmode_idt(); + + memcpy(REALMODE_BASE, &__realmode_code, (size_t)&__realmode_code_size); + printk(BIOS_SPEW, "VSA: Real mode stub @%p: %d bytes\n", REALMODE_BASE, + (u32)&__realmode_code_size); + + if ((unsigned int)cbfs_load_stage("vsa") != VSA2_ENTRY_POINT) { + printk(BIOS_ERR, "Failed to load VSA.\n"); + return; + } + + unsigned char *buf = (unsigned char *)VSA2_BUFFER; + printk(BIOS_DEBUG, "VSA: Buffer @%p *[0k]=%02x\n", buf, buf[0]); + printk(BIOS_DEBUG, "VSA: Signature *[0x20-0x23] is %02x:%02x:%02x:%02x\n", + buf[0x20], buf[0x21], buf[0x22], buf[0x23]); + + /* Check for code to emit POST code at start of VSA. */ + if ((buf[0x20] != 0xb0) || (buf[0x21] != 0x10) || + (buf[0x22] != 0xe6) || (buf[0x23] != 0x80)) { + printk(BIOS_WARNING, "VSA: Signature incorrect. Install failed.\n"); + return; + } + + printk(BIOS_DEBUG, "Calling VSA module...\n"); + + /* ECX gets SMM, EDX gets SYSMEM */ + realmode_call(VSA2_ENTRY_POINT, 0x0, 0x0, MSR_GLIU0_SMM, + MSR_GLIU0_SYSMEM, 0x0, 0x0); + + printk(BIOS_DEBUG, "... VSA module returned.\n"); + + /* Restart timer 1 */ + outb(0x56, 0x43); + outb(0x12, 0x41); + + /* Check that VSA is running OK */ + if (VSA_vrRead(SIGNATURE) == VSA2_SIGNATURE) + printk(BIOS_DEBUG, "VSM: VSA2 VR signature verified.\n"); + else + printk(BIOS_ERR, "VSM: VSA2 VR signature not valid. Install failed.\n"); +} +#endif + +/* interrupt_handler() is called from assembler code only, + * so there is no use in putting the prototype into a header file. + */ +int __attribute__((regparm(0))) interrupt_handler(u32 intnumber, + u32 gsfs, u32 dses, + u32 edi, u32 esi, + u32 ebp, u32 esp, + u32 ebx, u32 edx, + u32 ecx, u32 eax, + u32 cs_ip, u16 stackflags); + +int __attribute__((regparm(0))) interrupt_handler(u32 intnumber, + u32 gsfs, u32 dses, + u32 edi, u32 esi, + u32 ebp, u32 esp, + u32 ebx, u32 edx, + u32 ecx, u32 eax, + u32 cs_ip, u16 stackflags) +{ + u32 ip; + u32 cs; + u32 flags; + int ret = 0; + + ip = cs_ip & 0xffff; + cs = cs_ip >> 16; + flags = stackflags; + +#if CONFIG_REALMODE_DEBUG + printk(BIOS_DEBUG, "oprom: INT# 0x%x\n", intnumber); + printk(BIOS_DEBUG, "oprom: eax: %08x ebx: %08x ecx: %08x edx: %08x\n", + eax, ebx, ecx, edx); + printk(BIOS_DEBUG, "oprom: ebp: %08x esp: %08x edi: %08x esi: %08x\n", + ebp, esp, edi, esi); + printk(BIOS_DEBUG, "oprom: ip: %04x cs: %04x flags: %08x\n", + ip, cs, flags); +#endif + + // Fetch arguments from the stack and put them to a place + // suitable for the interrupt handlers + X86_EAX = eax; + X86_ECX = ecx; + X86_EDX = edx; + X86_EBX = ebx; + X86_ESP = esp; + X86_EBP = ebp; + X86_ESI = esi; + X86_EDI = edi; + M.x86.intno = intnumber; + /* TODO: error_code must be stored somewhere */ + X86_EIP = ip; + X86_CS = cs; + X86_EFLAGS = flags; + + // Call the interrupt handler for this int# + ret = intXX_handler[intnumber](); + + // Put registers back on the stack. The assembler code + // will later pop them. + // What happens here is that we force (volatile!) changing + // the values of the parameters of this function. We do this + // because we know that they stay alive on the stack after + // we leave this function. Don't say this is bollocks. + *(volatile u32 *)&eax = X86_EAX; + *(volatile u32 *)&ecx = X86_ECX; + *(volatile u32 *)&edx = X86_EDX; + *(volatile u32 *)&ebx = X86_EBX; + *(volatile u32 *)&esi = X86_ESI; + *(volatile u32 *)&edi = X86_EDI; + flags = X86_EFLAGS; + + /* Pass success or error back to our caller via the CARRY flag */ + if (ret) { + flags &= ~1; // no error: clear carry + }else{ + printk(BIOS_DEBUG,"int%02x call returned error.\n", intnumber); + flags |= 1; // error: set carry + } + *(volatile u16 *)&stackflags = flags; + + /* The assembler code doesn't actually care for the return value, + * but keep it around so its expectations are met */ + return ret; +} + diff --git a/src/device/oprom/realmode/x86.h b/src/device/oprom/realmode/x86.h new file mode 100644 index 0000000000..7dfa60f996 --- /dev/null +++ b/src/device/oprom/realmode/x86.h @@ -0,0 +1,49 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007 Advanced Micro Devices, Inc. + * Copyright (C) 2009-2010 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#define REALMODE_BASE ((void *)0x600) + +struct realmode_idt { + u16 offset, cs; +}; + +void x86_exception(struct eregs *info); + +/* From x86_asm.S */ +extern unsigned char __idt_handler, __idt_handler_size; +extern unsigned char __realmode_code, __realmode_code_size; +extern unsigned char __realmode_call, __realmode_interrupt; +extern unsigned char __buffer; + +extern void (*realmode_call)(u32 addr, u32 eax, u32 ebx, u32 ecx, u32 edx, + u32 esi, u32 edi) __attribute__((regparm(0))); + +extern void (*realmode_interrupt)(u32 intno, u32 eax, u32 ebx, u32 ecx, u32 edx, + u32 esi, u32 edi) __attribute__((regparm(0))); + +#define FAKE_MEMORY_SIZE (1024*1024) // only 1MB +#define INITIAL_EBDA_SEGMENT 0xF600 +#define INITIAL_EBDA_SIZE 0x400 + +int int10_handler(void); +int int12_handler(void); +int int16_handler(void); +int int1a_handler(void); + diff --git a/src/device/oprom/realmode/x86_asm.S b/src/device/oprom/realmode/x86_asm.S new file mode 100644 index 0000000000..56ebb3a885 --- /dev/null +++ b/src/device/oprom/realmode/x86_asm.S @@ -0,0 +1,413 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2009-2010 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#define REALMODE_BASE 0x600 +#define RELOCATED(x) (x - __realmode_code + REALMODE_BASE) + +/* CR0 bits */ +#define PE (1 << 0) + +/* This is the intXX interrupt handler stub code. It gets copied + * to the IDT and to some fixed addresses in the F segment. Before + * the code can used, it gets patched up by the C function copying + * it: byte 3 (the $0 in movb $0, %al) is overwritten with the int#. + */ + + .code16 + .globl __idt_handler +__idt_handler: + pushal + movb $0, %al /* This instruction gets modified */ + ljmp $0, $__interrupt_handler_16bit + .globl __idt_handler_size +__idt_handler_size = ( . - __idt_handler) + + +/* In order to be independent of coreboot's position in RAM + * we relocate a part of the code to the low megabyte, so the + * CPU can use it in real-mode. This code lives at __realmode_code. + */ + .globl __realmode_code +__realmode_code: + +/* Realmode IDT pointer structure. */ + .globl __realmode_idt +__realmode_idt = RELOCATED(.) + .word 1023 /* 16 bit limit */ + .long 0 /* 24 bit base */ + .word 0 + +/* Preserve old stack */ +__stack = RELOCATED(.) + .long 0 + +/* Register store for realmode_call and realmode_interrupt */ +__registers = RELOCATED(.) + .long 0 /* 0 - EAX */ + .long 0 /* 4 - EBX */ + .long 0 /* 8 - ECX */ + .long 0 /* 12 - EDX */ + .long 0 /* 16 - ESI */ + .long 0 /* 20 - EDI */ + +/* 256 byte buffer, used by int10 */ + .globl __buffer +__buffer = RELOCATED(.) + .skip 256 + + .code32 + .globl __realmode_call +__realmode_call = RELOCATED(.) + /* save all registers to the stack */ + pusha + pushf + + /* Move the protected mode stack pointer to a safe place */ + movl %esp, __stack + movl %esp, %ebp + + /* This function is called with regparm=0 and we have to + * skip the 36 byte from pushf+pusha. Hence start at 40. + */ + + /* entry point */ + movl 40(%ebp), %eax + mov %ax, __lcall_instr + 1 + andl $0xffff0000, %eax + shrl $4, %eax + mov %ax, __lcall_instr + 3 + + /* initial register values */ + movl 44(%ebp), %eax + movl %eax, __registers + 0 /* eax */ + movl 48(%ebp), %eax + movl %eax, __registers + 4 /* ebx */ + movl 52(%ebp), %eax + movl %eax, __registers + 8 /* ecx */ + movl 56(%ebp), %eax + movl %eax, __registers + 12 /* edx */ + movl 60(%ebp), %eax + movl %eax, __registers + 16 /* esi */ + movl 64(%ebp), %eax + movl %eax, __registers + 20 /* edi */ + + /* Activate the right segment descriptor real mode. */ + ljmp $0x28, $RELOCATED(1f) +1: +.code16 + /* 16 bit code from here on... */ + + /* Load the segment registers w/ properly configured + * segment descriptors. They will retain these + * configurations (limits, writability, etc.) once + * protected mode is turned off. + */ + mov $0x30, %ax + mov %ax, %ds + mov %ax, %es + mov %ax, %fs + mov %ax, %gs + mov %ax, %ss + + /* Turn off protection */ + movl %cr0, %eax + andl $~PE, %eax + movl %eax, %cr0 + + /* Now really going into real mode */ + ljmp $0, $RELOCATED(1f) +1: + /* Setup a stack: Put the stack at the end of page zero. + * That way we can easily share it between real and + * protected, since the 16 bit ESP at segment 0 will + * work for any case. */ + mov $0x0, %ax + mov %ax, %ss + movl $0x1000, %eax + movl %eax, %esp + + /* Load 16 bit IDT */ + xor %ax, %ax + mov %ax, %ds + lidt __realmode_idt + + /* initialize registers for option rom lcall */ + movl __registers + 0, %eax + movl __registers + 4, %ebx + movl __registers + 8, %ecx + movl __registers + 12, %edx + movl __registers + 16, %esi + movl __registers + 20, %edi + + /* Set all segments to 0x0000, ds to 0x0040 */ + push %ax + xor %ax, %ax + mov %ax, %es + mov %ax, %fs + mov %ax, %gs + mov $0x40, %ax + mov %ax, %ds + pop %ax + + /* ************************************ */ +__lcall_instr = RELOCATED(.) + .byte 0x9a + .word 0x0000, 0x0000 + /* ************************************ */ + + /* If we got here, we are just about done. + * Need to get back to protected mode. + */ + movl %cr0, %eax + orl $PE, %eax + movl %eax, %cr0 + + /* Now that we are in protected mode + * jump to a 32 bit code segment. + */ + data32 ljmp $0x10, $RELOCATED(1f) +1: + .code32 + mov $0x18, %ax + mov %ax, %ds + mov %ax, %es + mov %ax, %fs + mov %ax, %gs + mov %ax, %ss + + /* restore proper idt */ + lidt idtarg + + /* restore stack pointer, eflags and register values */ + movl __stack, %esp + popf + popa + + /* and exit */ + // TODO return AX from OPROM call + ret + + .globl __realmode_interrupt +__realmode_interrupt = RELOCATED(.) + /* save all registers to the stack */ + pusha + pushf + + /* save the stack pointer */ + movl %esp, __stack + movl %esp, %ebp + + /* This function is called with regparm=0 and we have to + * skip the 36 byte from pushf+pusha. Hence start at 40. + */ + + /* prepare interrupt calling code */ + movl 40(%ebp), %eax + movb %al, __intXX_instr + 1 /* intno */ + + /* initial register values */ + movl 44(%ebp), %eax + movl %eax, __registers + 0 /* eax */ + movl 48(%ebp), %eax + movl %eax, __registers + 4 /* ebx */ + movl 52(%ebp), %eax + movl %eax, __registers + 8 /* ecx */ + movl 56(%ebp), %eax + movl %eax, __registers + 12 /* edx */ + movl 60(%ebp), %eax + movl %eax, __registers + 16 /* esi */ + movl 64(%ebp), %eax + movl %eax, __registers + 20 /* edi */ + + /* This configures CS properly for real mode. */ + ljmp $0x28, $RELOCATED(1f) +1: + .code16 /* 16 bit code from here on... */ + + /* Load the segment registers w/ properly configured segment + * descriptors. They will retain these configurations (limits, + * writability, etc.) once protected mode is turned off. + */ + mov $0x30, %ax + mov %ax, %ds + mov %ax, %es + mov %ax, %fs + mov %ax, %gs + mov %ax, %ss + + /* Turn off protected mode */ + movl %cr0, %eax + andl $~PE, %eax + movl %eax, %cr0 + + /* Now really going into real mode */ + data32 ljmp $0, $RELOCATED(1f) +1: + + /* put the stack at the end of page zero. That way we can easily + * share it between real mode and protected mode, because %esp and + * %ss:%sp point to the same memory. + */ + /* setup a stack */ + mov $0x0, %ax + mov %ax, %ss + movl $0x1000, %eax + movl %eax, %esp + + /* Load 16-bit intXX IDT */ + xor %ax, %ax + mov %ax, %ds + lidt __realmode_idt + + /* initialize registers for intXX call */ + movl __registers + 0, %eax + movl __registers + 4, %ebx + movl __registers + 8, %ecx + movl __registers + 12, %edx + movl __registers + 16, %esi + movl __registers + 20, %edi + + /* Set all segments to 0x0000 */ + push %ax + xor %ax, %ax + mov %ax, %ds + mov %ax, %es + mov %ax, %fs + mov %ax, %gs + pop %ax + +__intXX_instr = RELOCATED(.) + .byte 0xcd, 0x00 /* This becomes intXX */ + + /* Ok, the job is done, now go back to protected mode coreboot */ + movl %cr0, %eax + orl $PE, %eax + movl %eax, %cr0 + + /* Now that we are in protected mode jump to a 32-bit code segment. */ + data32 ljmp $0x10, $RELOCATED(1f) +1: + .code32 + mov $0x18, %ax + mov %ax, %ds + mov %ax, %es + mov %ax, %fs + mov %ax, %gs + mov %ax, %ss + + /* restore coreboot's 32-bit IDT */ + lidt idtarg + + /* restore stack pointer, eflags and register values and exit */ + movl __stack, %esp + popf + popa + ret + +/* This is the 16-bit interrupt entry point called by the IDT stub code. + * + * Before this code code is called, %eax is pushed to the stack, and the + * interrupt number is loaded into %al. On return this function cleans up + * for its caller. + */ + .code16 +__interrupt_handler_16bit = RELOCATED(.) + push %ds + push %es + push %fs + push %gs + + /* Clear DF to not break ABI assumptions */ + cld + + /* Clean up the interrupt number. We could have done this in the stub, + * but it would have cost 2 more bytes per stub entry. + */ + andl $0xff, %eax + pushl %eax /* ... and make it the first parameter */ + + /* Switch to protected mode */ + movl %cr0, %eax + orl $PE, %eax + movl %eax, %cr0 + + /* ... and jump to a 32 bit code segment. */ + data32 ljmp $0x10, $RELOCATED(1f) +1: + .code32 + mov $0x18, %ax + mov %ax, %ds + mov %ax, %es + mov %ax, %fs + mov %ax, %gs + mov %ax, %ss + + lidt idtarg + + /* Call the C interrupt handler */ + movl $interrupt_handler, %eax + call *%eax + + /* Now return to real mode ... */ + ljmp $0x28, $RELOCATED(1f) +1: + .code16 + /* Load the segment registers with properly configured segment + * descriptors. They will retain these configurations (limits, + * writability, etc.) once protected mode is turned off. + */ + mov $0x30, %ax + mov %ax, %ds + mov %ax, %es + mov %ax, %fs + mov %ax, %gs + mov %ax, %ss + + /* Disable Protected Mode */ + movl %cr0, %eax + andl $~PE, %eax + movl %eax, %cr0 + + /* Now really going into real mode */ + ljmp $0, $RELOCATED(1f) +1: + /* Restore real-mode stack segment */ + mov $0x0, %ax + mov %ax, %ss + + /* Restore 16 bit IDT */ + xor %ax, %ax + mov %ax, %ds + lidt __realmode_idt + + /* Restore all registers, including those + * manipulated by the C handler + */ + popl %eax + pop %gs + pop %fs + pop %es + pop %ds + popal + iret + + .globl __realmode_code_size +__realmode_code_size = (. - __realmode_code) + + .code32 diff --git a/src/device/oprom/realmode/x86_interrupts.c b/src/device/oprom/realmode/x86_interrupts.c new file mode 100644 index 0000000000..b3764f93b7 --- /dev/null +++ b/src/device/oprom/realmode/x86_interrupts.c @@ -0,0 +1,235 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2001 Ronald G. Minnich + * Copyright (C) 2005 Nick.Barker9@btinternet.com + * Copyright (C) 2007-2009 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/pci_ops.h> +#include <string.h> +#include <console/console.h> +#include <arch/io.h> +#include <arch/registers.h> +#include "x86.h" +/* we use x86emu's register file representation */ +#include <x86emu/regs.h> + +// errors go in AH. Just set these up so that word assigns +// will work. KISS. +enum { + PCIBIOS_SUCCESSFUL = 0x0000, + PCIBIOS_UNSUPPORTED = 0x8100, + PCIBIOS_BADVENDOR = 0x8300, + PCIBIOS_NODEV = 0x8600, + PCIBIOS_BADREG = 0x8700 +}; + +int int10_handler(void) +{ + int res=0; + static u8 cursor_row=0, cursor_col=0; + switch((X86_EAX & 0xff00)>>8) { + case 0x01: // Set cursor shape + res = 1; + break; + case 0x02: // Set cursor position + if (cursor_row != ((X86_EDX >> 8) & 0xff) || + cursor_col >= (X86_EDX & 0xff)) { + printk(BIOS_INFO, "\n"); + } + cursor_row = (X86_EDX >> 8) & 0xff; + cursor_col = X86_EDX & 0xff; + res = 1; + break; + case 0x03: // Get cursor position + X86_EAX &= 0x00ff; + X86_ECX = 0x0607; + X86_EDX = (cursor_row << 8) | cursor_col; + res = 1; + break; + case 0x06: // Scroll up + printk(BIOS_INFO, "\n"); + res = 1; + break; + case 0x08: // Get Character and Mode at Cursor Position + X86_EAX = 0x0f00 | 'A'; // White on black 'A' + res = 1; + break; + case 0x09: // Write Character and attribute + case 0x0e: // Write Character + printk(BIOS_INFO, "%c", X86_EAX & 0xff); + res = 1; + break; + case 0x0f: // Get video mode + X86_EAX = 0x5002; //80x25 + X86_EBX &= 0x00ff; + res = 1; + break; + default: + printk(BIOS_WARNING, "Unknown INT10 function %04x!\n", + X86_EAX & 0xffff); + break; + } + return res; +} + +int int12_handler(void) +{ + X86_EAX = 64 * 1024; + return 1; +} + +int int16_handler(void) +{ + int res=0; + switch((X86_EAX & 0xff00)>>8) { + case 0x00: // Check for Keystroke + X86_EAX = 0x6120; // Space Bar, Space + res = 1; + break; + case 0x01: // Check for Keystroke + X86_EFLAGS |= 1<<6; // Zero Flag set (no key available) + res = 1; + break; + default: + printk(BIOS_WARNING, "Unknown INT16 function %04x!\n", + X86_EAX & 0xffff); + break; + } + return res; +} + +#define PCI_CONFIG_SPACE_TYPE1 (1 << 0) +#define PCI_SPECIAL_CYCLE_TYPE1 (1 << 4) + +int int1a_handler(void) +{ + unsigned short func = (unsigned short)X86_EAX; + int retval = 1; + unsigned short devid, vendorid, devfn; + /* Use short to get rid of gabage in upper half of 32-bit register */ + short devindex; + unsigned char bus; + struct device *dev; + u32 dword; + u16 word; + u8 byte, reg; + + switch (func) { + case 0xb101: /* PCIBIOS Check */ + X86_EDX = 0x20494350; /* ' ICP' */ + X86_EAX &= 0xffff0000; /* Clear AH / AL */ + X86_EAX |= PCI_CONFIG_SPACE_TYPE1 | PCI_SPECIAL_CYCLE_TYPE1; + // last bus in the system. Hard code to 255 for now. + // dev_enumerate() does not seem to tell us (publically) + X86_ECX = 0xff; + X86_EDI = 0x00000000; /* protected mode entry */ + retval = 1; + break; + case 0xb102: /* Find Device */ + devid = X86_ECX; + vendorid = X86_EDX; + devindex = X86_ESI; + dev = 0; + while ((dev = dev_find_device(vendorid, devid, dev))) { + if (devindex <= 0) + break; + devindex--; + } + if (dev) { + unsigned short busdevfn; + X86_EAX &= 0xffff00ff; /* Clear AH */ + X86_EAX |= PCIBIOS_SUCCESSFUL; + // busnum is an unsigned char; + // devfn is an int, so we mask it off. + busdevfn = (dev->bus->secondary << 8) + | (dev->path.pci.devfn & 0xff); + printk(BIOS_DEBUG, "0x%x: return 0x%x\n", func, busdevfn); + X86_EBX = busdevfn; + retval = 1; + } else { + X86_EAX &= 0xffff00ff; /* Clear AH */ + X86_EAX |= PCIBIOS_NODEV; + retval = 0; + } + break; + case 0xb10a: /* Read Config Dword */ + case 0xb109: /* Read Config Word */ + case 0xb108: /* Read Config Byte */ + case 0xb10d: /* Write Config Dword */ + case 0xb10c: /* Write Config Word */ + case 0xb10b: /* Write Config Byte */ + devfn = X86_EBX & 0xff; + bus = X86_EBX >> 8; + reg = X86_EDI; + dev = dev_find_slot(bus, devfn); + if (!dev) { + printk(BIOS_DEBUG, "0x%x: BAD DEVICE bus %d devfn 0x%x\n", func, bus, devfn); + // Or are we supposed to return PCIBIOS_NODEV? + X86_EAX &= 0xffff00ff; /* Clear AH */ + X86_EAX |= PCIBIOS_BADREG; + retval = 0; + return retval; + } + switch (func) { + case 0xb108: /* Read Config Byte */ + byte = pci_read_config8(dev, reg); + X86_ECX = byte; + break; + case 0xb109: /* Read Config Word */ + word = pci_read_config16(dev, reg); + X86_ECX = word; + break; + case 0xb10a: /* Read Config Dword */ + dword = pci_read_config32(dev, reg); + X86_ECX = dword; + break; + case 0xb10b: /* Write Config Byte */ + byte = X86_ECX; + pci_write_config8(dev, reg, byte); + break; + case 0xb10c: /* Write Config Word */ + word = X86_ECX; + pci_write_config16(dev, reg, word); + break; + case 0xb10d: /* Write Config Dword */ + dword = X86_ECX; + pci_write_config32(dev, reg, dword); + break; + } + +#if CONFIG_REALMODE_DEBUG + printk(BIOS_DEBUG, "0x%x: bus %d devfn 0x%x reg 0x%x val 0x%x\n", + func, bus, devfn, reg, X86_ECX); +#endif + X86_EAX &= 0xffff00ff; /* Clear AH */ + X86_EAX |= PCIBIOS_SUCCESSFUL; + retval = 1; + break; + default: + printk(BIOS_ERR, "UNSUPPORTED PCIBIOS FUNCTION 0x%x\n", func); + X86_EAX &= 0xffff00ff; /* Clear AH */ + X86_EAX |= PCIBIOS_UNSUPPORTED; + retval = 0; + break; + } + + return retval; +} + diff --git a/src/device/oprom/x86emu/LICENSE b/src/device/oprom/x86emu/LICENSE new file mode 100644 index 0000000000..a3ede4a87d --- /dev/null +++ b/src/device/oprom/x86emu/LICENSE @@ -0,0 +1,17 @@ + License information + ------------------- + +The x86emu library is under a BSD style license, comaptible +with the XFree86 and X licenses used by XFree86. The +original x86emu libraries were under the GNU General Public +License. Due to license incompatibilities between the GPL +and the XFree86 license, the original authors of the code +decided to allow a license change. If you have submitted +code to the original x86emu project, and you don't agree +with the license change, please contact us and let you +know. Your code will be removed to comply with your wishes. + +If you have any questions about this, please send email to +x86emu@linuxlabs.com or KendallB@scitechsoft.com for +clarification. + diff --git a/src/device/oprom/x86emu/Makefile.inc b/src/device/oprom/x86emu/Makefile.inc new file mode 100644 index 0000000000..620e5f8771 --- /dev/null +++ b/src/device/oprom/x86emu/Makefile.inc @@ -0,0 +1,7 @@ +ramstage-y += debug.c +ramstage-y += decode.c +ramstage-y += fpu.c +ramstage-y += ops.c +ramstage-y += ops2.c +ramstage-y += prim_ops.c +ramstage-y += sys.c diff --git a/src/device/oprom/x86emu/debug.c b/src/device/oprom/x86emu/debug.c new file mode 100644 index 0000000000..b3f4b6ebfb --- /dev/null +++ b/src/device/oprom/x86emu/debug.c @@ -0,0 +1,434 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file contains the code to handle debugging of the +* emulator. +* +****************************************************************************/ + +#include "x86emui.h" + +/*----------------------------- Implementation ----------------------------*/ + +#ifdef DEBUG + +static void print_encoded_bytes (u16 s, u16 o); +static void print_decoded_instruction (void); +int parse_line (char *s, int *ps, int *n); + +/* should look something like debug's output. */ +void X86EMU_trace_regs (void) +{ + if (DEBUG_TRACE()) { + if (M.x86.mode & (SYSMODE_PREFIX_DATA | SYSMODE_PREFIX_ADDR)) { + x86emu_dump_xregs(); + } else { + x86emu_dump_regs(); + } + } + if (DEBUG_DECODE() && ! DEBUG_DECODE_NOPRINT()) { + printf("%04x:%04x ",M.x86.saved_cs, M.x86.saved_ip); + print_encoded_bytes( M.x86.saved_cs, M.x86.saved_ip); + print_decoded_instruction(); + } +} + +void X86EMU_trace_xregs (void) +{ + if (DEBUG_TRACE()) { + x86emu_dump_xregs(); + } +} + +void x86emu_just_disassemble (void) +{ + /* + * This routine called if the flag DEBUG_DISASSEMBLE is set kind + * of a hack! + */ + printf("%04x:%04x ",M.x86.saved_cs, M.x86.saved_ip); + print_encoded_bytes( M.x86.saved_cs, M.x86.saved_ip); + print_decoded_instruction(); +} + +void disassemble_forward (u16 seg, u16 off, int n) +{ + X86EMU_sysEnv tregs; + int i; + u8 op1; + /* + * hack, hack, hack. What we do is use the exact machinery set up + * for execution, except that now there is an additional state + * flag associated with the "execution", and we are using a copy + * of the register struct. All the major opcodes, once fully + * decoded, have the following two steps: TRACE_REGS(r,m); + * SINGLE_STEP(r,m); which disappear if DEBUG is not defined to + * the preprocessor. The TRACE_REGS macro expands to: + * + * if (debug&DEBUG_DISASSEMBLE) + * {just_disassemble(); goto EndOfInstruction;} + * if (debug&DEBUG_TRACE) trace_regs(r,m); + * + * ...... and at the last line of the routine. + * + * EndOfInstruction: end_instr(); + * + * Up to the point where TRACE_REG is expanded, NO modifications + * are done to any register EXCEPT the IP register, for fetch and + * decoding purposes. + * + * This was done for an entirely different reason, but makes a + * nice way to get the system to help debug codes. + */ + tregs = M; + tregs.x86.R_IP = off; + tregs.x86.R_CS = seg; + + /* reset the decoding buffers */ + tregs.x86.enc_str_pos = 0; + tregs.x86.enc_pos = 0; + + /* turn on the "disassemble only, no execute" flag */ + tregs.x86.debug |= DEBUG_DISASSEMBLE_F; + + /* DUMP NEXT n instructions to screen in straight_line fashion */ + /* + * This looks like the regular instruction fetch stream, except + * that when this occurs, each fetched opcode, upon seeing the + * DEBUG_DISASSEMBLE flag set, exits immediately after decoding + * the instruction. XXX --- CHECK THAT MEM IS NOT AFFECTED!!! + * Note the use of a copy of the register structure... + */ + for (i=0; i<n; i++) { + op1 = (*sys_rdb)(((u32)M.x86.R_CS<<4) + (M.x86.R_IP++)); + (x86emu_optab[op1])(op1); + } + /* end major hack mode. */ +} + +void x86emu_check_ip_access (void) +{ + /* NULL as of now */ +} + +void x86emu_check_sp_access (void) +{ +} + +void x86emu_check_mem_access (u32 dummy) +{ + /* check bounds, etc */ +} + +void x86emu_check_data_access (uint dummy1, uint dummy2) +{ + /* check bounds, etc */ +} + +void x86emu_inc_decoded_inst_len (int x) +{ + M.x86.enc_pos += x; +} + +void x86emu_decode_printf (const char *x) +{ + sprintf(M.x86.decoded_buf+M.x86.enc_str_pos,"%s",x); + M.x86.enc_str_pos += strlen(x); +} + +void x86emu_decode_printf2 (const char *x, int y) +{ + char temp[100]; + sprintf(temp,x,y); + sprintf(M.x86.decoded_buf+M.x86.enc_str_pos,"%s",temp); + M.x86.enc_str_pos += strlen(temp); +} + +void x86emu_end_instr (void) +{ + M.x86.enc_str_pos = 0; + M.x86.enc_pos = 0; +} + +static void print_encoded_bytes (u16 s, u16 o) +{ + int i; + char buf1[64]; + for (i=0; i< M.x86.enc_pos; i++) { + sprintf(buf1+2*i,"%02x", fetch_data_byte_abs(s,o+i)); + } + printf("%-20s ",buf1); +} + +static void print_decoded_instruction (void) +{ + printf("%s", M.x86.decoded_buf); +} + +void x86emu_print_int_vect (u16 iv) +{ + u16 seg,off; + + if (iv > 256) return; + seg = fetch_data_word_abs(0,iv*4); + off = fetch_data_word_abs(0,iv*4+2); + printf("%04x:%04x ", seg, off); +} + +void X86EMU_dump_memory (u16 seg, u16 off, u32 amt) +{ + u32 start = off & 0xfffffff0; + u32 end = (off+16) & 0xfffffff0; + u32 i; + u32 current; + + current = start; + while (end <= off + amt) { + printf("%04x:%04x ", seg, start); + for (i=start; i< off; i++) + printf(" "); + for ( ; i< end; i++) + printf("%02x ", fetch_data_byte_abs(seg,i)); + printf("\n"); + start = end; + end = start + 16; + } +} + +void x86emu_single_step (void) +{ +#if 0 + char s[1024]; + int ps[10]; + int ntok; + int cmd; + int done; + int segment; + int offset; + static int breakpoint; + static int noDecode = 1; + + char *p; + + if (DEBUG_BREAK()) { + if (M.x86.saved_ip != breakpoint) { + return; + } else { + M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F; + M.x86.debug |= DEBUG_TRACE_F; + M.x86.debug &= ~DEBUG_BREAK_F; + print_decoded_instruction (); + X86EMU_trace_regs(); + } + } + done=0; + offset = M.x86.saved_ip; + while (!done) { + printf("-"); + p = fgets(s, 1023, stdin); + cmd = parse_line(s, ps, &ntok); + switch(cmd) { + case 'u': + disassemble_forward(M.x86.saved_cs,(u16)offset,10); + break; + case 'd': + if (ntok == 2) { + segment = M.x86.saved_cs; + offset = ps[1]; + X86EMU_dump_memory(segment,(u16)offset,16); + offset += 16; + } else if (ntok == 3) { + segment = ps[1]; + offset = ps[2]; + X86EMU_dump_memory(segment,(u16)offset,16); + offset += 16; + } else { + segment = M.x86.saved_cs; + X86EMU_dump_memory(segment,(u16)offset,16); + offset += 16; + } + break; + case 'c': + M.x86.debug ^= DEBUG_TRACECALL_F; + break; + case 's': + M.x86.debug ^= DEBUG_SVC_F | DEBUG_SYS_F | DEBUG_SYSINT_F; + break; + case 'r': + X86EMU_trace_regs(); + break; + case 'x': + X86EMU_trace_xregs(); + break; + case 'g': + if (ntok == 2) { + breakpoint = ps[1]; + if (noDecode) { + M.x86.debug |= DEBUG_DECODE_NOPRINT_F; + } else { + M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F; + } + M.x86.debug &= ~DEBUG_TRACE_F; + M.x86.debug |= DEBUG_BREAK_F; + done = 1; + } + break; + case 'q': + M.x86.debug |= DEBUG_EXIT; + return; + case 'P': + noDecode = (noDecode)?0:1; + printf("Toggled decoding to %s\n",(noDecode)?"FALSE":"TRUE"); + break; + case 't': + case 0: + done = 1; + break; + } + } +#endif +} + +int X86EMU_trace_on(void) +{ + return M.x86.debug |= DEBUG_STEP_F | DEBUG_DECODE_F | DEBUG_TRACE_F; +} + +int X86EMU_trace_off(void) +{ + return M.x86.debug &= ~(DEBUG_STEP_F | DEBUG_DECODE_F | DEBUG_TRACE_F); +} + +int parse_line (char *s, int *ps, int *n) +{ +#if 0 + int cmd; + + *n = 0; + while(*s == ' ' || *s == '\t') s++; + ps[*n] = *s; + switch (*s) { + case '\n': + *n += 1; + return 0; + default: + cmd = *s; + *n += 1; + } + + while (1) { + while (*s != ' ' && *s != '\t' && *s != '\n') s++; + + if (*s == '\n') + return cmd; + + while(*s == ' ' || *s == '\t') s++; + + sscanf(s,"%x",&ps[*n]); + *n += 1; + } +#else + return 0; +#endif +} + +#endif /* DEBUG */ + +void x86emu_dump_regs (void) +{ + printf("\tAX=%04x ", M.x86.R_AX ); + printf("BX=%04x ", M.x86.R_BX ); + printf("CX=%04x ", M.x86.R_CX ); + printf("DX=%04x ", M.x86.R_DX ); + printf("SP=%04x ", M.x86.R_SP ); + printf("BP=%04x ", M.x86.R_BP ); + printf("SI=%04x ", M.x86.R_SI ); + printf("DI=%04x\n", M.x86.R_DI ); + printf("\tDS=%04x ", M.x86.R_DS ); + printf("ES=%04x ", M.x86.R_ES ); + printf("SS=%04x ", M.x86.R_SS ); + printf("CS=%04x ", M.x86.R_CS ); + printf("IP=%04x ", M.x86.R_IP ); + if (ACCESS_FLAG(F_OF)) printf("OV "); /* CHECKED... */ + else printf("NV "); + if (ACCESS_FLAG(F_DF)) printf("DN "); + else printf("UP "); + if (ACCESS_FLAG(F_IF)) printf("EI "); + else printf("DI "); + if (ACCESS_FLAG(F_SF)) printf("NG "); + else printf("PL "); + if (ACCESS_FLAG(F_ZF)) printf("ZR "); + else printf("NZ "); + if (ACCESS_FLAG(F_AF)) printf("AC "); + else printf("NA "); + if (ACCESS_FLAG(F_PF)) printf("PE "); + else printf("PO "); + if (ACCESS_FLAG(F_CF)) printf("CY "); + else printf("NC "); + printf("\n"); +} + +void x86emu_dump_xregs (void) +{ + printf("\tEAX=%08x ", M.x86.R_EAX ); + printf("EBX=%08x ", M.x86.R_EBX ); + printf("ECX=%08x ", M.x86.R_ECX ); + printf("EDX=%08x \n", M.x86.R_EDX ); + printf("\tESP=%08x ", M.x86.R_ESP ); + printf("EBP=%08x ", M.x86.R_EBP ); + printf("ESI=%08x ", M.x86.R_ESI ); + printf("EDI=%08x\n", M.x86.R_EDI ); + printf("\tDS=%04x ", M.x86.R_DS ); + printf("ES=%04x ", M.x86.R_ES ); + printf("SS=%04x ", M.x86.R_SS ); + printf("CS=%04x ", M.x86.R_CS ); + printf("EIP=%08x\n\t", M.x86.R_EIP ); + if (ACCESS_FLAG(F_OF)) printf("OV "); /* CHECKED... */ + else printf("NV "); + if (ACCESS_FLAG(F_DF)) printf("DN "); + else printf("UP "); + if (ACCESS_FLAG(F_IF)) printf("EI "); + else printf("DI "); + if (ACCESS_FLAG(F_SF)) printf("NG "); + else printf("PL "); + if (ACCESS_FLAG(F_ZF)) printf("ZR "); + else printf("NZ "); + if (ACCESS_FLAG(F_AF)) printf("AC "); + else printf("NA "); + if (ACCESS_FLAG(F_PF)) printf("PE "); + else printf("PO "); + if (ACCESS_FLAG(F_CF)) printf("CY "); + else printf("NC "); + printf("\n"); +} diff --git a/src/device/oprom/x86emu/debug.h b/src/device/oprom/x86emu/debug.h new file mode 100644 index 0000000000..1b2c3a3f1c --- /dev/null +++ b/src/device/oprom/x86emu/debug.h @@ -0,0 +1,234 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for debug definitions. +* +****************************************************************************/ +/* $XFree86: xc/extras/x86emu/src/x86emu/x86emu/debug.h,v 1.4 2000/11/21 23:10:27 tsi Exp $ */ + +#ifndef __X86EMU_DEBUG_H +#define __X86EMU_DEBUG_H + +/*---------------------- Macros and type definitions ----------------------*/ + +#ifdef CONFIG_DEFAULT_CONSOLE_LOGLEVEL +/* printf is not available in coreboot... use printk */ +#define printf(x...) printk(BIOS_DEBUG, x) +#endif + +/* checks to be enabled for "runtime" */ + +#define CHECK_IP_FETCH_F 0x1 +#define CHECK_SP_ACCESS_F 0x2 +#define CHECK_MEM_ACCESS_F 0x4 /*using regular linear pointer */ +#define CHECK_DATA_ACCESS_F 0x8 /*using segment:offset*/ + +#ifdef DEBUG +# define CHECK_IP_FETCH() (M.x86.check & CHECK_IP_FETCH_F) +# define CHECK_SP_ACCESS() (M.x86.check & CHECK_SP_ACCESS_F) +# define CHECK_MEM_ACCESS() (M.x86.check & CHECK_MEM_ACCESS_F) +# define CHECK_DATA_ACCESS() (M.x86.check & CHECK_DATA_ACCESS_F) +#else +# define CHECK_IP_FETCH() +# define CHECK_SP_ACCESS() +# define CHECK_MEM_ACCESS() +# define CHECK_DATA_ACCESS() +#endif + +#ifdef DEBUG +# define DEBUG_INSTRUMENT() (M.x86.debug & DEBUG_INSTRUMENT_F) +# define DEBUG_DECODE() (M.x86.debug & DEBUG_DECODE_F) +# define DEBUG_TRACE() (M.x86.debug & DEBUG_TRACE_F) +# define DEBUG_STEP() (M.x86.debug & DEBUG_STEP_F) +# define DEBUG_DISASSEMBLE() (M.x86.debug & DEBUG_DISASSEMBLE_F) +# define DEBUG_BREAK() (M.x86.debug & DEBUG_BREAK_F) +# define DEBUG_SVC() (M.x86.debug & DEBUG_SVC_F) +# define DEBUG_SAVE_IP_CS() (M.x86.debug & DEBUG_SAVE_IP_CS_F) + +# define DEBUG_FS() (M.x86.debug & DEBUG_FS_F) +# define DEBUG_PROC() (M.x86.debug & DEBUG_PROC_F) +# define DEBUG_SYSINT() (M.x86.debug & DEBUG_SYSINT_F) +# define DEBUG_TRACECALL() (M.x86.debug & DEBUG_TRACECALL_F) +# define DEBUG_TRACECALLREGS() (M.x86.debug & DEBUG_TRACECALL_REGS_F) +# define DEBUG_TRACEJMP() (M.x86.debug & DEBUG_TRACEJMP_F) +# define DEBUG_TRACEJMPREGS() (M.x86.debug & DEBUG_TRACEJMP_REGS_F) +# define DEBUG_SYS() (M.x86.debug & DEBUG_SYS_F) +# define DEBUG_MEM_TRACE() (M.x86.debug & DEBUG_MEM_TRACE_F) +# define DEBUG_IO_TRACE() (M.x86.debug & DEBUG_IO_TRACE_F) +# define DEBUG_DECODE_NOPRINT() (M.x86.debug & DEBUG_DECODE_NOPRINT_F) +#else +# define DEBUG_INSTRUMENT() 0 +# define DEBUG_DECODE() 0 +# define DEBUG_TRACE() 0 +# define DEBUG_STEP() 0 +# define DEBUG_DISASSEMBLE() 0 +# define DEBUG_BREAK() 0 +# define DEBUG_SVC() 0 +# define DEBUG_SAVE_IP_CS() 0 +# define DEBUG_FS() 0 +# define DEBUG_PROC() 0 +# define DEBUG_SYSINT() 0 +# define DEBUG_TRACECALL() 0 +# define DEBUG_TRACECALLREGS() 0 +# define DEBUG_TRACEJMP() 0 +# define DEBUG_TRACEJMPREGS() 0 +# define DEBUG_SYS() 0 +# define DEBUG_MEM_TRACE() 0 +# define DEBUG_IO_TRACE() 0 +# define DEBUG_DECODE_NOPRINT() 0 +#endif + +#ifdef DEBUG + +# define DECODE_PRINTF(x) if (DEBUG_DECODE()) \ + x86emu_decode_printf(x) +# define DECODE_PRINTF2(x,y) if (DEBUG_DECODE()) \ + x86emu_decode_printf2(x,y) + +/* + * The following allow us to look at the bytes of an instruction. The + * first INCR_INSTRN_LEN, is called everytime bytes are consumed in + * the decoding process. The SAVE_IP_CS is called initially when the + * major opcode of the instruction is accessed. + */ +#define INC_DECODED_INST_LEN(x) \ + if (DEBUG_DECODE()) \ + x86emu_inc_decoded_inst_len(x) + +#define SAVE_IP_CS(x,y) \ + if (DEBUG_DECODE() | DEBUG_TRACECALL() | DEBUG_BREAK() \ + | DEBUG_IO_TRACE() | DEBUG_SAVE_IP_CS()) { \ + M.x86.saved_cs = x; \ + M.x86.saved_ip = y; \ + } +#else +# define INC_DECODED_INST_LEN(x) +# define DECODE_PRINTF(x) +# define DECODE_PRINTF2(x,y) +# define SAVE_IP_CS(x,y) +#endif + +#ifdef DEBUG +#define TRACE_REGS() \ + if (DEBUG_DISASSEMBLE()) { \ + x86emu_just_disassemble(); \ + goto EndOfTheInstructionProcedure; \ + } \ + if (DEBUG_TRACE() || DEBUG_DECODE()) X86EMU_trace_regs() +#else +# define TRACE_REGS() +#endif + +#ifdef DEBUG +# define SINGLE_STEP() if (DEBUG_STEP()) x86emu_single_step() +#else +# define SINGLE_STEP() +#endif + +#define TRACE_AND_STEP() \ + TRACE_REGS(); \ + SINGLE_STEP() + +#ifdef DEBUG +# define START_OF_INSTR() +# define END_OF_INSTR() EndOfTheInstructionProcedure: x86emu_end_instr(); +# define END_OF_INSTR_NO_TRACE() x86emu_end_instr(); +#else +# define START_OF_INSTR() +# define END_OF_INSTR() +# define END_OF_INSTR_NO_TRACE() +#endif + +#ifdef DEBUG +# define CALL_TRACE(u,v,w,x,s) \ + if (DEBUG_TRACECALLREGS()) \ + x86emu_dump_regs(); \ + if (DEBUG_TRACECALL()) \ + printf("%04x:%04x: CALL %s%04x:%04x\n", u , v, s, w, x); +# define RETURN_TRACE(u,v,w,x,s) \ + if (DEBUG_TRACECALLREGS()) \ + x86emu_dump_regs(); \ + if (DEBUG_TRACECALL()) \ + printf("%04x:%04x: RET %s %04x:%04x\n",u,v,s,w,x); +# define JMP_TRACE(u,v,w,x,s) \ + if (DEBUG_TRACEJMPREGS()) \ + x86emu_dump_regs(); \ + if (DEBUG_TRACEJMP()) \ + printf("%04x:%04x: JMP %s%04x:%04x\n", u , v, s, w, x); +#else +# define CALL_TRACE(u,v,w,x,s) +# define RETURN_TRACE(u,v,w,x,s) +# define JMP_TRACE(u,v,w,x,s) +#endif + +#ifdef DEBUG +#define DB(x) x +#else +#define DB(x) +#endif + +#ifdef DEBUG +#define X86EMU_DEBUG_ONLY(x) x +#else +#define X86EMU_DEBUG_ONLY(x) X86EMU_UNUSED(x) +#endif + +/*-------------------------- Function Prototypes --------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + +void x86emu_inc_decoded_inst_len (int x); +void x86emu_decode_printf (const char *x); +void x86emu_decode_printf2 (const char *x, int y); +void x86emu_just_disassemble (void); +void x86emu_single_step (void); +void x86emu_end_instr (void); +void x86emu_dump_regs (void); +void x86emu_dump_xregs (void); +void x86emu_print_int_vect (u16 iv); +void x86emu_instrument_instruction (void); +void x86emu_check_ip_access (void); +void x86emu_check_sp_access (void); +void x86emu_check_mem_access (u32 p); +void x86emu_check_data_access (uint s, uint o); + +void disassemble_forward (u16 seg, u16 off, int n); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif + +#endif /* __X86EMU_DEBUG_H */ diff --git a/src/device/oprom/x86emu/decode.c b/src/device/oprom/x86emu/decode.c new file mode 100644 index 0000000000..ed96dc66e6 --- /dev/null +++ b/src/device/oprom/x86emu/decode.c @@ -0,0 +1,1149 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file includes subroutines which are related to +* instruction decoding and accessess of immediate data via IP. etc. +* +****************************************************************************/ + +#include "x86emui.h" + +/*----------------------------- Implementation ----------------------------*/ + +/**************************************************************************** +REMARKS: +Handles any pending asychronous interrupts. +****************************************************************************/ +static void x86emu_intr_handle(void) +{ + u8 intno; + + if (M.x86.intr & INTR_SYNCH) { + intno = M.x86.intno; + if (_X86EMU_intrTab[intno]) { + (*_X86EMU_intrTab[intno])(intno); + } else { + push_word((u16)M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(intno * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(intno * 4); + M.x86.intr = 0; + } + } +} + +/**************************************************************************** +PARAMETERS: +intrnum - Interrupt number to raise + +REMARKS: +Raise the specified interrupt to be handled before the execution of the +next instruction. +****************************************************************************/ +void x86emu_intr_raise( + u8 intrnum) +{ + printf("%s, raising exeception %x\n", __func__, intrnum); + x86emu_dump_regs(); + M.x86.intno = intrnum; + M.x86.intr |= INTR_SYNCH; +} + +/**************************************************************************** +REMARKS: +Main execution loop for the emulator. We return from here when the system +halts, which is normally caused by a stack fault when we return from the +original real mode call. +****************************************************************************/ +void X86EMU_exec(void) +{ + u8 op1; + + M.x86.intr = 0; + DB(x86emu_end_instr();) + + for (;;) { +DB( if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + /* If debugging, save the IP and CS values. */ + SAVE_IP_CS(M.x86.R_CS, M.x86.R_IP); + INC_DECODED_INST_LEN(1); + if (M.x86.intr) { + if (M.x86.intr & INTR_HALTED) { +DB( if (M.x86.R_SP != 0) { + printf("halted\n"); + X86EMU_trace_regs(); + } + else { + if (M.x86.debug) + printf("Service completed successfully\n"); + }) + return; + } + if (((M.x86.intr & INTR_SYNCH) && (M.x86.intno == 0 || M.x86.intno == 2)) || + !ACCESS_FLAG(F_IF)) { + x86emu_intr_handle(); + } + } + op1 = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++)); + (*x86emu_optab[op1])(op1); + //if (M.x86.debug & DEBUG_EXIT) { + // M.x86.debug &= ~DEBUG_EXIT; + // return; + //} + } +} + +/**************************************************************************** +REMARKS: +Halts the system by setting the halted system flag. +****************************************************************************/ +void X86EMU_halt_sys(void) +{ + M.x86.intr |= INTR_HALTED; +} + +/**************************************************************************** +PARAMETERS: +mod - Mod value from decoded byte +regh - Reg h value from decoded byte +regl - Reg l value from decoded byte + +REMARKS: +Raise the specified interrupt to be handled before the execution of the +next instruction. + +NOTE: Do not inline this function, as (*sys_rdb) is already inline! +****************************************************************************/ +void fetch_decode_modrm( + int *mod, + int *regh, + int *regl) +{ + int fetched; + +DB( if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + fetched = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++)); + INC_DECODED_INST_LEN(1); + *mod = (fetched >> 6) & 0x03; + *regh = (fetched >> 3) & 0x07; + *regl = (fetched >> 0) & 0x07; +} + +/**************************************************************************** +RETURNS: +Immediate byte value read from instruction queue + +REMARKS: +This function returns the immediate byte from the instruction queue, and +moves the instruction pointer to the next value. + +NOTE: Do not inline this function, as (*sys_rdb) is already inline! +****************************************************************************/ +u8 fetch_byte_imm(void) +{ + u8 fetched; + +DB( if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + fetched = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++)); + INC_DECODED_INST_LEN(1); + return fetched; +} + +/**************************************************************************** +RETURNS: +Immediate word value read from instruction queue + +REMARKS: +This function returns the immediate byte from the instruction queue, and +moves the instruction pointer to the next value. + +NOTE: Do not inline this function, as (*sys_rdw) is already inline! +****************************************************************************/ +u16 fetch_word_imm(void) +{ + u16 fetched; + +DB( if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + fetched = (*sys_rdw)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP)); + M.x86.R_IP += 2; + INC_DECODED_INST_LEN(2); + return fetched; +} + +/**************************************************************************** +RETURNS: +Immediate lone value read from instruction queue + +REMARKS: +This function returns the immediate byte from the instruction queue, and +moves the instruction pointer to the next value. + +NOTE: Do not inline this function, as (*sys_rdw) is already inline! +****************************************************************************/ +u32 fetch_long_imm(void) +{ + u32 fetched; + +DB( if (CHECK_IP_FETCH()) + x86emu_check_ip_access();) + fetched = (*sys_rdl)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP)); + M.x86.R_IP += 4; + INC_DECODED_INST_LEN(4); + return fetched; +} + +/**************************************************************************** +RETURNS: +Value of the default data segment + +REMARKS: +Inline function that returns the default data segment for the current +instruction. + +On the x86 processor, the default segment is not always DS if there is +no segment override. Address modes such as -3[BP] or 10[BP+SI] all refer to +addresses relative to SS (ie: on the stack). So, at the minimum, all +decodings of addressing modes would have to set/clear a bit describing +whether the access is relative to DS or SS. That is the function of the +cpu-state-varible M.x86.mode. There are several potential states: + + repe prefix seen (handled elsewhere) + repne prefix seen (ditto) + + cs segment override + ds segment override + es segment override + fs segment override + gs segment override + ss segment override + + ds/ss select (in absense of override) + +Each of the above 7 items are handled with a bit in the mode field. +****************************************************************************/ +_INLINE u32 get_data_segment(void) +{ +#define GET_SEGMENT(segment) + switch (M.x86.mode & SYSMODE_SEGMASK) { + case 0: /* default case: use ds register */ + case SYSMODE_SEGOVR_DS: + case SYSMODE_SEGOVR_DS | SYSMODE_SEG_DS_SS: + return M.x86.R_DS; + case SYSMODE_SEG_DS_SS: /* non-overridden, use ss register */ + return M.x86.R_SS; + case SYSMODE_SEGOVR_CS: + case SYSMODE_SEGOVR_CS | SYSMODE_SEG_DS_SS: + return M.x86.R_CS; + case SYSMODE_SEGOVR_ES: + case SYSMODE_SEGOVR_ES | SYSMODE_SEG_DS_SS: + return M.x86.R_ES; + case SYSMODE_SEGOVR_FS: + case SYSMODE_SEGOVR_FS | SYSMODE_SEG_DS_SS: + return M.x86.R_FS; + case SYSMODE_SEGOVR_GS: + case SYSMODE_SEGOVR_GS | SYSMODE_SEG_DS_SS: + return M.x86.R_GS; + case SYSMODE_SEGOVR_SS: + case SYSMODE_SEGOVR_SS | SYSMODE_SEG_DS_SS: + return M.x86.R_SS; + default: +#ifdef DEBUG + printf("error: should not happen: multiple overrides.\n"); +#endif + HALT_SYS(); + return 0; + } +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to load data from + +RETURNS: +Byte value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u8 fetch_data_byte( + uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16)get_data_segment(), offset); +#endif + return (*sys_rdb)((get_data_segment() << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to load data from + +RETURNS: +Word value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u16 fetch_data_word( + uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16)get_data_segment(), offset); +#endif + return (*sys_rdw)((get_data_segment() << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to load data from + +RETURNS: +Long value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u32 fetch_data_long( + uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16)get_data_segment(), offset); +#endif + return (*sys_rdl)((get_data_segment() << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to load data from +offset - Offset to load data from + +RETURNS: +Byte value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u8 fetch_data_byte_abs( + uint segment, + uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + return (*sys_rdb)(((u32)segment << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to load data from +offset - Offset to load data from + +RETURNS: +Word value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u16 fetch_data_word_abs( + uint segment, + uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + return (*sys_rdw)(((u32)segment << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to load data from +offset - Offset to load data from + +RETURNS: +Long value read from the absolute memory location. + +NOTE: Do not inline this function as (*sys_rdX) is already inline! +****************************************************************************/ +u32 fetch_data_long_abs( + uint segment, + uint offset) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + return (*sys_rdl)(((u32)segment << 4) + offset); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a word value to an segmented memory location. The segment used is +the current 'default' segment, which may have been overridden. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void store_data_byte( + uint offset, + u8 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16)get_data_segment(), offset); +#endif + (*sys_wrb)((get_data_segment() << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a word value to an segmented memory location. The segment used is +the current 'default' segment, which may have been overridden. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void store_data_word( + uint offset, + u16 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16)get_data_segment(), offset); +#endif + (*sys_wrw)((get_data_segment() << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a long value to an segmented memory location. The segment used is +the current 'default' segment, which may have been overridden. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void store_data_long( + uint offset, + u32 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access((u16)get_data_segment(), offset); +#endif + (*sys_wrl)((get_data_segment() << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to store data at +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a byte value to an absolute memory location. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void store_data_byte_abs( + uint segment, + uint offset, + u8 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + (*sys_wrb)(((u32)segment << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to store data at +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a word value to an absolute memory location. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void store_data_word_abs( + uint segment, + uint offset, + u16 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + (*sys_wrw)(((u32)segment << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +segment - Segment to store data at +offset - Offset to store data at +val - Value to store + +REMARKS: +Writes a long value to an absolute memory location. + +NOTE: Do not inline this function as (*sys_wrX) is already inline! +****************************************************************************/ +void store_data_long_abs( + uint segment, + uint offset, + u32 val) +{ +#ifdef DEBUG + if (CHECK_DATA_ACCESS()) + x86emu_check_data_access(segment, offset); +#endif + (*sys_wrl)(((u32)segment << 4) + offset, val); +} + +/**************************************************************************** +PARAMETERS: +reg - Register to decode + +RETURNS: +Pointer to the appropriate register + +REMARKS: +Return a pointer to the register given by the R/RM field of the +modrm byte, for byte operands. Also enables the decoding of instructions. +****************************************************************************/ +u8* decode_rm_byte_register( + int reg) +{ + switch (reg) { + case 0: + DECODE_PRINTF("AL"); + return &M.x86.R_AL; + case 1: + DECODE_PRINTF("CL"); + return &M.x86.R_CL; + case 2: + DECODE_PRINTF("DL"); + return &M.x86.R_DL; + case 3: + DECODE_PRINTF("BL"); + return &M.x86.R_BL; + case 4: + DECODE_PRINTF("AH"); + return &M.x86.R_AH; + case 5: + DECODE_PRINTF("CH"); + return &M.x86.R_CH; + case 6: + DECODE_PRINTF("DH"); + return &M.x86.R_DH; + case 7: + DECODE_PRINTF("BH"); + return &M.x86.R_BH; + } + HALT_SYS(); + return NULL; /* NOT REACHED OR REACHED ON ERROR */ +} + +/**************************************************************************** +PARAMETERS: +reg - Register to decode + +RETURNS: +Pointer to the appropriate register + +REMARKS: +Return a pointer to the register given by the R/RM field of the +modrm byte, for word operands. Also enables the decoding of instructions. +****************************************************************************/ +u16* decode_rm_word_register( + int reg) +{ + switch (reg) { + case 0: + DECODE_PRINTF("AX"); + return &M.x86.R_AX; + case 1: + DECODE_PRINTF("CX"); + return &M.x86.R_CX; + case 2: + DECODE_PRINTF("DX"); + return &M.x86.R_DX; + case 3: + DECODE_PRINTF("BX"); + return &M.x86.R_BX; + case 4: + DECODE_PRINTF("SP"); + return &M.x86.R_SP; + case 5: + DECODE_PRINTF("BP"); + return &M.x86.R_BP; + case 6: + DECODE_PRINTF("SI"); + return &M.x86.R_SI; + case 7: + DECODE_PRINTF("DI"); + return &M.x86.R_DI; + } + HALT_SYS(); + return NULL; /* NOTREACHED OR REACHED ON ERROR */ +} + +/**************************************************************************** +PARAMETERS: +reg - Register to decode + +RETURNS: +Pointer to the appropriate register + +REMARKS: +Return a pointer to the register given by the R/RM field of the +modrm byte, for dword operands. Also enables the decoding of instructions. +****************************************************************************/ +u32* decode_rm_long_register( + int reg) +{ + switch (reg) { + case 0: + DECODE_PRINTF("EAX"); + return &M.x86.R_EAX; + case 1: + DECODE_PRINTF("ECX"); + return &M.x86.R_ECX; + case 2: + DECODE_PRINTF("EDX"); + return &M.x86.R_EDX; + case 3: + DECODE_PRINTF("EBX"); + return &M.x86.R_EBX; + case 4: + DECODE_PRINTF("ESP"); + return &M.x86.R_ESP; + case 5: + DECODE_PRINTF("EBP"); + return &M.x86.R_EBP; + case 6: + DECODE_PRINTF("ESI"); + return &M.x86.R_ESI; + case 7: + DECODE_PRINTF("EDI"); + return &M.x86.R_EDI; + } + HALT_SYS(); + return NULL; /* NOTREACHED OR REACHED ON ERROR */ +} + +/**************************************************************************** +PARAMETERS: +reg - Register to decode + +RETURNS: +Pointer to the appropriate register + +REMARKS: +Return a pointer to the register given by the R/RM field of the +modrm byte, for word operands, modified from above for the weirdo +special case of segreg operands. Also enables the decoding of instructions. +****************************************************************************/ +u16* decode_rm_seg_register( + int reg) +{ + switch (reg) { + case 0: + DECODE_PRINTF("ES"); + return &M.x86.R_ES; + case 1: + DECODE_PRINTF("CS"); + return &M.x86.R_CS; + case 2: + DECODE_PRINTF("SS"); + return &M.x86.R_SS; + case 3: + DECODE_PRINTF("DS"); + return &M.x86.R_DS; + case 4: + DECODE_PRINTF("FS"); + return &M.x86.R_FS; + case 5: + DECODE_PRINTF("GS"); + return &M.x86.R_GS; + case 6: + case 7: + DECODE_PRINTF("ILLEGAL SEGREG"); + break; + } + HALT_SYS(); + return NULL; /* NOT REACHED OR REACHED ON ERROR */ +} + +/**************************************************************************** +PARAMETERS: +scale - scale value of SIB byte +index - index value of SIB byte + +RETURNS: +Value of scale * index + +REMARKS: +Decodes scale/index of SIB byte and returns relevant offset part of +effective address. +****************************************************************************/ +static unsigned decode_sib_si( + int scale, + int index) +{ + scale = 1 << scale; + if (scale > 1) { + DECODE_PRINTF2("[%d*", scale); + } else { + DECODE_PRINTF("["); + } + switch (index) { + case 0: + DECODE_PRINTF("EAX]"); + return M.x86.R_EAX * index; + case 1: + DECODE_PRINTF("ECX]"); + return M.x86.R_ECX * index; + case 2: + DECODE_PRINTF("EDX]"); + return M.x86.R_EDX * index; + case 3: + DECODE_PRINTF("EBX]"); + return M.x86.R_EBX * index; + case 4: + DECODE_PRINTF("0]"); + return 0; + case 5: + DECODE_PRINTF("EBP]"); + return M.x86.R_EBP * index; + case 6: + DECODE_PRINTF("ESI]"); + return M.x86.R_ESI * index; + case 7: + DECODE_PRINTF("EDI]"); + return M.x86.R_EDI * index; + } + HALT_SYS(); + return 0; /* NOT REACHED OR REACHED ON ERROR */ +} + +/**************************************************************************** +PARAMETERS: +mod - MOD value of preceding ModR/M byte + +RETURNS: +Offset in memory for the address decoding + +REMARKS: +Decodes SIB addressing byte and returns calculated effective address. +****************************************************************************/ +static unsigned decode_sib_address( + int mod) +{ + int sib = fetch_byte_imm(); + int ss = (sib >> 6) & 0x03; + int index = (sib >> 3) & 0x07; + int base = sib & 0x07; + int offset = 0; + int displacement; + + switch (base) { + case 0: + DECODE_PRINTF("[EAX]"); + offset = M.x86.R_EAX; + break; + case 1: + DECODE_PRINTF("[ECX]"); + offset = M.x86.R_ECX; + break; + case 2: + DECODE_PRINTF("[EDX]"); + offset = M.x86.R_EDX; + break; + case 3: + DECODE_PRINTF("[EBX]"); + offset = M.x86.R_EBX; + break; + case 4: + DECODE_PRINTF("[ESP]"); + offset = M.x86.R_ESP; + break; + case 5: + switch (mod) { + case 0: + displacement = (s32)fetch_long_imm(); + DECODE_PRINTF2("[%d]", displacement); + offset = displacement; + break; + case 1: + displacement = (s8)fetch_byte_imm(); + DECODE_PRINTF2("[%d][EBP]", displacement); + offset = M.x86.R_EBP + displacement; + break; + case 2: + displacement = (s32)fetch_long_imm(); + DECODE_PRINTF2("[%d][EBP]", displacement); + offset = M.x86.R_EBP + displacement; + break; + default: + HALT_SYS(); + } + DECODE_PRINTF("[EAX]"); + offset = M.x86.R_EAX; + break; + case 6: + DECODE_PRINTF("[ESI]"); + offset = M.x86.R_ESI; + break; + case 7: + DECODE_PRINTF("[EDI]"); + offset = M.x86.R_EDI; + break; + default: + HALT_SYS(); + } + offset += decode_sib_si(ss, index); + return offset; +} + +/**************************************************************************** +PARAMETERS: +rm - RM value to decode + +RETURNS: +Offset in memory for the address decoding + +REMARKS: +Return the offset given by mod=00 addressing. Also enables the +decoding of instructions. + +NOTE: The code which specifies the corresponding segment (ds vs ss) + below in the case of [BP+..]. The assumption here is that at the + point that this subroutine is called, the bit corresponding to + SYSMODE_SEG_DS_SS will be zero. After every instruction + except the segment override instructions, this bit (as well + as any bits indicating segment overrides) will be clear. So + if a SS access is needed, set this bit. Otherwise, DS access + occurs (unless any of the segment override bits are set). +****************************************************************************/ +unsigned decode_rm00_address( + int rm) +{ + unsigned offset; + + if (M.x86.mode & SYSMODE_PREFIX_ADDR) { + /* 32-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF("[EAX]"); + return M.x86.R_EAX; + case 1: + DECODE_PRINTF("[ECX]"); + return M.x86.R_ECX; + case 2: + DECODE_PRINTF("[EDX]"); + return M.x86.R_EDX; + case 3: + DECODE_PRINTF("[EBX]"); + return M.x86.R_EBX; + case 4: + return decode_sib_address(0); + case 5: + offset = fetch_long_imm(); + DECODE_PRINTF2("[%08x]", offset); + return offset; + case 6: + DECODE_PRINTF("[ESI]"); + return M.x86.R_ESI; + case 7: + DECODE_PRINTF("[EDI]"); + return M.x86.R_EDI; + } + } else { + /* 16-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF("[BX+SI]"); + return (M.x86.R_BX + M.x86.R_SI) & 0xffff; + case 1: + DECODE_PRINTF("[BX+DI]"); + return (M.x86.R_BX + M.x86.R_DI) & 0xffff; + case 2: + DECODE_PRINTF("[BP+SI]"); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_SI) & 0xffff; + case 3: + DECODE_PRINTF("[BP+DI]"); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_DI) & 0xffff; + case 4: + DECODE_PRINTF("[SI]"); + return M.x86.R_SI; + case 5: + DECODE_PRINTF("[DI]"); + return M.x86.R_DI; + case 6: + offset = fetch_word_imm(); + DECODE_PRINTF2("[%04x]", offset); + return offset; + case 7: + DECODE_PRINTF("[BX]"); + return M.x86.R_BX; + } + } + HALT_SYS(); + return 0; +} + +/**************************************************************************** +PARAMETERS: +rm - RM value to decode + +RETURNS: +Offset in memory for the address decoding + +REMARKS: +Return the offset given by mod=01 addressing. Also enables the +decoding of instructions. +****************************************************************************/ +unsigned decode_rm01_address( + int rm) +{ + int displacement; + + if (M.x86.mode & SYSMODE_PREFIX_ADDR) { + /* 32-bit addressing */ + if (rm != 4) + displacement = (s8)fetch_byte_imm(); + else + displacement = 0; + + switch (rm) { + case 0: + DECODE_PRINTF2("%d[EAX]", displacement); + return M.x86.R_EAX + displacement; + case 1: + DECODE_PRINTF2("%d[ECX]", displacement); + return M.x86.R_ECX + displacement; + case 2: + DECODE_PRINTF2("%d[EDX]", displacement); + return M.x86.R_EDX + displacement; + case 3: + DECODE_PRINTF2("%d[EBX]", displacement); + return M.x86.R_EBX + displacement; + case 4: { + int offset = decode_sib_address(1); + displacement = (s8)fetch_byte_imm(); + DECODE_PRINTF2("[%d]", displacement); + return offset + displacement; + } + case 5: + DECODE_PRINTF2("%d[EBP]", displacement); + return M.x86.R_EBP + displacement; + case 6: + DECODE_PRINTF2("%d[ESI]", displacement); + return M.x86.R_ESI + displacement; + case 7: + DECODE_PRINTF2("%d[EDI]", displacement); + return M.x86.R_EDI + displacement; + } + } else { + /* 16-bit addressing */ + displacement = (s8)fetch_byte_imm(); + switch (rm) { + case 0: + DECODE_PRINTF2("%d[BX+SI]", displacement); + return (M.x86.R_BX + M.x86.R_SI + displacement) & 0xffff; + case 1: + DECODE_PRINTF2("%d[BX+DI]", displacement); + return (M.x86.R_BX + M.x86.R_DI + displacement) & 0xffff; + case 2: + DECODE_PRINTF2("%d[BP+SI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_SI + displacement) & 0xffff; + case 3: + DECODE_PRINTF2("%d[BP+DI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_DI + displacement) & 0xffff; + case 4: + DECODE_PRINTF2("%d[SI]", displacement); + return (M.x86.R_SI + displacement) & 0xffff; + case 5: + DECODE_PRINTF2("%d[DI]", displacement); + return (M.x86.R_DI + displacement) & 0xffff; + case 6: + DECODE_PRINTF2("%d[BP]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + displacement) & 0xffff; + case 7: + DECODE_PRINTF2("%d[BX]", displacement); + return (M.x86.R_BX + displacement) & 0xffff; + } + } + HALT_SYS(); + return 0; /* SHOULD NOT HAPPEN */ +} + +/**************************************************************************** +PARAMETERS: +rm - RM value to decode + +RETURNS: +Offset in memory for the address decoding + +REMARKS: +Return the offset given by mod=10 addressing. Also enables the +decoding of instructions. +****************************************************************************/ +unsigned decode_rm10_address( + int rm) +{ + if (M.x86.mode & SYSMODE_PREFIX_ADDR) { + int displacement; + + /* 32-bit addressing */ + if (rm != 4) + displacement = (s32)fetch_long_imm(); + else + displacement = 0; + + switch (rm) { + case 0: + DECODE_PRINTF2("%d[EAX]", displacement); + return M.x86.R_EAX + displacement; + case 1: + DECODE_PRINTF2("%d[ECX]", displacement); + return M.x86.R_ECX + displacement; + case 2: + DECODE_PRINTF2("%d[EDX]", displacement); + return M.x86.R_EDX + displacement; + case 3: + DECODE_PRINTF2("%d[EBX]", displacement); + return M.x86.R_EBX + displacement; + case 4: { + int offset = decode_sib_address(2); + displacement = (s32)fetch_long_imm(); + DECODE_PRINTF2("[%d]", displacement); + return offset + displacement; + } + case 5: + DECODE_PRINTF2("%d[EBP]", displacement); + return M.x86.R_EBP + displacement; + case 6: + DECODE_PRINTF2("%d[ESI]", displacement); + return M.x86.R_ESI + displacement; + case 7: + DECODE_PRINTF2("%d[EDI]", displacement); + return M.x86.R_EDI + displacement; + } + } else { + int displacement = (s16)fetch_word_imm(); + + /* 16-bit addressing */ + switch (rm) { + case 0: + DECODE_PRINTF2("%d[BX+SI]", displacement); + return (M.x86.R_BX + M.x86.R_SI + displacement) & 0xffff; + case 1: + DECODE_PRINTF2("%d[BX+DI]", displacement); + return (M.x86.R_BX + M.x86.R_DI + displacement) & 0xffff; + case 2: + DECODE_PRINTF2("%d[BP+SI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_SI + displacement) & 0xffff; + case 3: + DECODE_PRINTF2("%d[BP+DI]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + M.x86.R_DI + displacement) & 0xffff; + case 4: + DECODE_PRINTF2("%d[SI]", displacement); + return (M.x86.R_SI + displacement) & 0xffff; + case 5: + DECODE_PRINTF2("%d[DI]", displacement); + return (M.x86.R_DI + displacement) & 0xffff; + case 6: + DECODE_PRINTF2("%d[BP]", displacement); + M.x86.mode |= SYSMODE_SEG_DS_SS; + return (M.x86.R_BP + displacement) & 0xffff; + case 7: + DECODE_PRINTF2("%d[BX]", displacement); + return (M.x86.R_BX + displacement) & 0xffff; + } + } + HALT_SYS(); + return 0; /* SHOULD NOT HAPPEN */ +} + + +/**************************************************************************** +PARAMETERS: +mod - modifier +rm - RM value to decode + +RETURNS: +Offset in memory for the address decoding, multiplexing calls to +the decode_rmXX_address functions + +REMARKS: +Return the offset given by "mod" addressing. +****************************************************************************/ + +unsigned decode_rmXX_address(int mod, int rm) +{ + if(mod == 0) + return decode_rm00_address(rm); + if(mod == 1) + return decode_rm01_address(rm); + return decode_rm10_address(rm); +} + + + diff --git a/src/device/oprom/x86emu/decode.h b/src/device/oprom/x86emu/decode.h new file mode 100644 index 0000000000..99ed7f6f35 --- /dev/null +++ b/src/device/oprom/x86emu/decode.h @@ -0,0 +1,88 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for instruction decoding logic. +* +****************************************************************************/ + +#ifndef __X86EMU_DECODE_H +#define __X86EMU_DECODE_H + +/*---------------------- Macros and type definitions ----------------------*/ + +/* Instruction Decoding Stuff */ + +#define FETCH_DECODE_MODRM(mod,rh,rl) fetch_decode_modrm(&mod,&rh,&rl) +#define DECODE_RM_BYTE_REGISTER(r) decode_rm_byte_register(r) +#define DECODE_RM_WORD_REGISTER(r) decode_rm_word_register(r) +#define DECODE_RM_LONG_REGISTER(r) decode_rm_long_register(r) +#define DECODE_CLEAR_SEGOVR() M.x86.mode &= ~SYSMODE_CLRMASK + +/*-------------------------- Function Prototypes --------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + +void x86emu_intr_raise (u8 type); +void fetch_decode_modrm (int *mod,int *regh,int *regl); +u8 fetch_byte_imm (void); +u16 fetch_word_imm (void); +u32 fetch_long_imm (void); +u8 fetch_data_byte (uint offset); +u8 fetch_data_byte_abs (uint segment, uint offset); +u16 fetch_data_word (uint offset); +u16 fetch_data_word_abs (uint segment, uint offset); +u32 fetch_data_long (uint offset); +u32 fetch_data_long_abs (uint segment, uint offset); +void store_data_byte (uint offset, u8 val); +void store_data_byte_abs (uint segment, uint offset, u8 val); +void store_data_word (uint offset, u16 val); +void store_data_word_abs (uint segment, uint offset, u16 val); +void store_data_long (uint offset, u32 val); +void store_data_long_abs (uint segment, uint offset, u32 val); +u8* decode_rm_byte_register(int reg); +u16* decode_rm_word_register(int reg); +u32* decode_rm_long_register(int reg); +u16* decode_rm_seg_register(int reg); +unsigned decode_rm00_address(int rm); +unsigned decode_rm01_address(int rm); +unsigned decode_rm10_address(int rm); +unsigned decode_rmXX_address(int mod, int rm); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif + +#endif /* __X86EMU_DECODE_H */ diff --git a/src/device/oprom/x86emu/fpu.c b/src/device/oprom/x86emu/fpu.c new file mode 100644 index 0000000000..7edebd4244 --- /dev/null +++ b/src/device/oprom/x86emu/fpu.c @@ -0,0 +1,951 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file contains the code to implement the decoding and +* emulation of the FPU instructions. +* +****************************************************************************/ + +#include "x86emui.h" + +/*----------------------------- Implementation ----------------------------*/ + +/* opcode=0xd8 */ +void x86emuOp_esc_coprocess_d8(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("ESC D8\n"); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} + +#ifdef X86EMU_FPU_PRESENT +#define X86EMU_FPU_ONLY(x) x +#else +#define X86EMU_FPU_ONLY(x) X86EMU_UNUSED(x) +#endif + +#ifdef DEBUG + +static const char *x86emu_fpu_op_d9_tab[] = { + "FLD\tDWORD PTR ", "ESC_D9\t", "FST\tDWORD PTR ", "FSTP\tDWORD PTR ", + "FLDENV\t", "FLDCW\t", "FSTENV\t", "FSTCW\t", + + "FLD\tDWORD PTR ", "ESC_D9\t", "FST\tDWORD PTR ", "FSTP\tDWORD PTR ", + "FLDENV\t", "FLDCW\t", "FSTENV\t", "FSTCW\t", + + "FLD\tDWORD PTR ", "ESC_D9\t", "FST\tDWORD PTR ", "FSTP\tDWORD PTR ", + "FLDENV\t", "FLDCW\t", "FSTENV\t", "FSTCW\t", +}; + +static const char *x86emu_fpu_op_d9_tab1[] = { + "FLD\t", "FLD\t", "FLD\t", "FLD\t", + "FLD\t", "FLD\t", "FLD\t", "FLD\t", + + "FXCH\t", "FXCH\t", "FXCH\t", "FXCH\t", + "FXCH\t", "FXCH\t", "FXCH\t", "FXCH\t", + + "FNOP", "ESC_D9", "ESC_D9", "ESC_D9", + "ESC_D9", "ESC_D9", "ESC_D9", "ESC_D9", + + "FSTP\t", "FSTP\t", "FSTP\t", "FSTP\t", + "FSTP\t", "FSTP\t", "FSTP\t", "FSTP\t", + + "FCHS", "FABS", "ESC_D9", "ESC_D9", + "FTST", "FXAM", "ESC_D9", "ESC_D9", + + "FLD1", "FLDL2T", "FLDL2E", "FLDPI", + "FLDLG2", "FLDLN2", "FLDZ", "ESC_D9", + + "F2XM1", "FYL2X", "FPTAN", "FPATAN", + "FXTRACT", "ESC_D9", "FDECSTP", "FINCSTP", + + "FPREM", "FYL2XP1", "FSQRT", "ESC_D9", + "FRNDINT", "FSCALE", "ESC_D9", "ESC_D9", +}; + +#endif /* DEBUG */ + +/* opcode=0xd9 */ +void x86emuOp_esc_coprocess_d9(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint X86EMU_FPU_ONLY(destoffset); + u8 X86EMU_FPU_ONLY(stkelem); + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (mod != 3) { + DECODE_PRINTINSTR32(x86emu_fpu_op_d9_tab, mod, rh, rl); + } else { + DECODE_PRINTF(x86emu_fpu_op_d9_tab1[(rh << 3) + rl]); + } +#endif + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + break; + case 3: /* register to register */ + stkelem = (u8)rl; + if (rh < 4) { + DECODE_PRINTF2("ST(%d)\n", stkelem); + } else { + DECODE_PRINTF("\n"); + } + break; + } +#ifdef X86EMU_FPU_PRESENT + /* execute */ + switch (mod) { + case 3: + switch (rh) { + case 0: + x86emu_fpu_R_fld(X86EMU_FPU_STKTOP, stkelem); + break; + case 1: + x86emu_fpu_R_fxch(X86EMU_FPU_STKTOP, stkelem); + break; + case 2: + switch (rl) { + case 0: + x86emu_fpu_R_nop(); + break; + default: + x86emu_fpu_illegal(); + break; + } + case 3: + x86emu_fpu_R_fstp(X86EMU_FPU_STKTOP, stkelem); + break; + case 4: + switch (rl) { + case 0: + x86emu_fpu_R_fchs(X86EMU_FPU_STKTOP); + break; + case 1: + x86emu_fpu_R_fabs(X86EMU_FPU_STKTOP); + break; + case 4: + x86emu_fpu_R_ftst(X86EMU_FPU_STKTOP); + break; + case 5: + x86emu_fpu_R_fxam(X86EMU_FPU_STKTOP); + break; + default: + /* 2,3,6,7 */ + x86emu_fpu_illegal(); + break; + } + break; + + case 5: + switch (rl) { + case 0: + x86emu_fpu_R_fld1(X86EMU_FPU_STKTOP); + break; + case 1: + x86emu_fpu_R_fldl2t(X86EMU_FPU_STKTOP); + break; + case 2: + x86emu_fpu_R_fldl2e(X86EMU_FPU_STKTOP); + break; + case 3: + x86emu_fpu_R_fldpi(X86EMU_FPU_STKTOP); + break; + case 4: + x86emu_fpu_R_fldlg2(X86EMU_FPU_STKTOP); + break; + case 5: + x86emu_fpu_R_fldln2(X86EMU_FPU_STKTOP); + break; + case 6: + x86emu_fpu_R_fldz(X86EMU_FPU_STKTOP); + break; + default: + /* 7 */ + x86emu_fpu_illegal(); + break; + } + break; + + case 6: + switch (rl) { + case 0: + x86emu_fpu_R_f2xm1(X86EMU_FPU_STKTOP); + break; + case 1: + x86emu_fpu_R_fyl2x(X86EMU_FPU_STKTOP); + break; + case 2: + x86emu_fpu_R_fptan(X86EMU_FPU_STKTOP); + break; + case 3: + x86emu_fpu_R_fpatan(X86EMU_FPU_STKTOP); + break; + case 4: + x86emu_fpu_R_fxtract(X86EMU_FPU_STKTOP); + break; + case 5: + x86emu_fpu_illegal(); + break; + case 6: + x86emu_fpu_R_decstp(); + break; + case 7: + x86emu_fpu_R_incstp(); + break; + } + break; + + case 7: + switch (rl) { + case 0: + x86emu_fpu_R_fprem(X86EMU_FPU_STKTOP); + break; + case 1: + x86emu_fpu_R_fyl2xp1(X86EMU_FPU_STKTOP); + break; + case 2: + x86emu_fpu_R_fsqrt(X86EMU_FPU_STKTOP); + break; + case 3: + x86emu_fpu_illegal(); + break; + case 4: + x86emu_fpu_R_frndint(X86EMU_FPU_STKTOP); + break; + case 5: + x86emu_fpu_R_fscale(X86EMU_FPU_STKTOP); + break; + case 6: + case 7: + default: + x86emu_fpu_illegal(); + break; + } + break; + + default: + switch (rh) { + case 0: + x86emu_fpu_M_fld(X86EMU_FPU_FLOAT, destoffset); + break; + case 1: + x86emu_fpu_illegal(); + break; + case 2: + x86emu_fpu_M_fst(X86EMU_FPU_FLOAT, destoffset); + break; + case 3: + x86emu_fpu_M_fstp(X86EMU_FPU_FLOAT, destoffset); + break; + case 4: + x86emu_fpu_M_fldenv(X86EMU_FPU_WORD, destoffset); + break; + case 5: + x86emu_fpu_M_fldcw(X86EMU_FPU_WORD, destoffset); + break; + case 6: + x86emu_fpu_M_fstenv(X86EMU_FPU_WORD, destoffset); + break; + case 7: + x86emu_fpu_M_fstcw(X86EMU_FPU_WORD, destoffset); + break; + } + } + } +#endif /* X86EMU_FPU_PRESENT */ + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} + +#ifdef DEBUG + +static const char *x86emu_fpu_op_da_tab[] = { + "FIADD\tDWORD PTR ", "FIMUL\tDWORD PTR ", "FICOM\tDWORD PTR ", + "FICOMP\tDWORD PTR ", + "FISUB\tDWORD PTR ", "FISUBR\tDWORD PTR ", "FIDIV\tDWORD PTR ", + "FIDIVR\tDWORD PTR ", + + "FIADD\tDWORD PTR ", "FIMUL\tDWORD PTR ", "FICOM\tDWORD PTR ", + "FICOMP\tDWORD PTR ", + "FISUB\tDWORD PTR ", "FISUBR\tDWORD PTR ", "FIDIV\tDWORD PTR ", + "FIDIVR\tDWORD PTR ", + + "FIADD\tDWORD PTR ", "FIMUL\tDWORD PTR ", "FICOM\tDWORD PTR ", + "FICOMP\tDWORD PTR ", + "FISUB\tDWORD PTR ", "FISUBR\tDWORD PTR ", "FIDIV\tDWORD PTR ", + "FIDIVR\tDWORD PTR ", + + "ESC_DA ", "ESC_DA ", "ESC_DA ", "ESC_DA ", + "ESC_DA ", "ESC_DA ", "ESC_DA ", "ESC_DA ", +}; + +#endif /* DEBUG */ + +/* opcode=0xda */ +void x86emuOp_esc_coprocess_da(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint X86EMU_FPU_ONLY(destoffset); + u8 X86EMU_FPU_ONLY(stkelem); + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + DECODE_PRINTINSTR32(x86emu_fpu_op_da_tab, mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + break; + case 3: /* register to register */ + stkelem = (u8)rl; + DECODE_PRINTF2("\tST(%d),ST\n", stkelem); + break; + } +#ifdef X86EMU_FPU_PRESENT + switch (mod) { + case 3: + x86emu_fpu_illegal(); + break; + default: + switch (rh) { + case 0: + x86emu_fpu_M_iadd(X86EMU_FPU_SHORT, destoffset); + break; + case 1: + x86emu_fpu_M_imul(X86EMU_FPU_SHORT, destoffset); + break; + case 2: + x86emu_fpu_M_icom(X86EMU_FPU_SHORT, destoffset); + break; + case 3: + x86emu_fpu_M_icomp(X86EMU_FPU_SHORT, destoffset); + break; + case 4: + x86emu_fpu_M_isub(X86EMU_FPU_SHORT, destoffset); + break; + case 5: + x86emu_fpu_M_isubr(X86EMU_FPU_SHORT, destoffset); + break; + case 6: + x86emu_fpu_M_idiv(X86EMU_FPU_SHORT, destoffset); + break; + case 7: + x86emu_fpu_M_idivr(X86EMU_FPU_SHORT, destoffset); + break; + } + } +#endif + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} + +#ifdef DEBUG + +static const char *x86emu_fpu_op_db_tab[] = { + "FILD\tDWORD PTR ", "ESC_DB\t19", "FIST\tDWORD PTR ", "FISTP\tDWORD PTR ", + "ESC_DB\t1C", "FLD\tTBYTE PTR ", "ESC_DB\t1E", "FSTP\tTBYTE PTR ", + + "FILD\tDWORD PTR ", "ESC_DB\t19", "FIST\tDWORD PTR ", "FISTP\tDWORD PTR ", + "ESC_DB\t1C", "FLD\tTBYTE PTR ", "ESC_DB\t1E", "FSTP\tTBYTE PTR ", + + "FILD\tDWORD PTR ", "ESC_DB\t19", "FIST\tDWORD PTR ", "FISTP\tDWORD PTR ", + "ESC_DB\t1C", "FLD\tTBYTE PTR ", "ESC_DB\t1E", "FSTP\tTBYTE PTR ", +}; + +#endif /* DEBUG */ + +/* opcode=0xdb */ +void x86emuOp_esc_coprocess_db(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint X86EMU_FPU_ONLY(destoffset); + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (mod != 3) { + DECODE_PRINTINSTR32(x86emu_fpu_op_db_tab, mod, rh, rl); + } else if (rh == 4) { /* === 11 10 0 nnn */ + switch (rl) { + case 0: + DECODE_PRINTF("FENI\n"); + break; + case 1: + DECODE_PRINTF("FDISI\n"); + break; + case 2: + DECODE_PRINTF("FCLEX\n"); + break; + case 3: + DECODE_PRINTF("FINIT\n"); + break; + } + } else { + DECODE_PRINTF2("ESC_DB %0x\n", (mod << 6) + (rh << 3) + (rl)); + } +#endif /* DEBUG */ + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + break; + case 1: + destoffset = decode_rm01_address(rl); + break; + case 2: + destoffset = decode_rm10_address(rl); + break; + case 3: /* register to register */ + break; + } +#ifdef X86EMU_FPU_PRESENT + /* execute */ + switch (mod) { + case 3: + switch (rh) { + case 4: + switch (rl) { + case 0: + x86emu_fpu_R_feni(); + break; + case 1: + x86emu_fpu_R_fdisi(); + break; + case 2: + x86emu_fpu_R_fclex(); + break; + case 3: + x86emu_fpu_R_finit(); + break; + default: + x86emu_fpu_illegal(); + break; + } + break; + default: + x86emu_fpu_illegal(); + break; + } + break; + default: + switch (rh) { + case 0: + x86emu_fpu_M_fild(X86EMU_FPU_SHORT, destoffset); + break; + case 1: + x86emu_fpu_illegal(); + break; + case 2: + x86emu_fpu_M_fist(X86EMU_FPU_SHORT, destoffset); + break; + case 3: + x86emu_fpu_M_fistp(X86EMU_FPU_SHORT, destoffset); + break; + case 4: + x86emu_fpu_illegal(); + break; + case 5: + x86emu_fpu_M_fld(X86EMU_FPU_LDBL, destoffset); + break; + case 6: + x86emu_fpu_illegal(); + break; + case 7: + x86emu_fpu_M_fstp(X86EMU_FPU_LDBL, destoffset); + break; + } + } +#endif + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} + +#ifdef DEBUG +static const char *x86emu_fpu_op_dc_tab[] = { + "FADD\tQWORD PTR ", "FMUL\tQWORD PTR ", "FCOM\tQWORD PTR ", + "FCOMP\tQWORD PTR ", + "FSUB\tQWORD PTR ", "FSUBR\tQWORD PTR ", "FDIV\tQWORD PTR ", + "FDIVR\tQWORD PTR ", + + "FADD\tQWORD PTR ", "FMUL\tQWORD PTR ", "FCOM\tQWORD PTR ", + "FCOMP\tQWORD PTR ", + "FSUB\tQWORD PTR ", "FSUBR\tQWORD PTR ", "FDIV\tQWORD PTR ", + "FDIVR\tQWORD PTR ", + + "FADD\tQWORD PTR ", "FMUL\tQWORD PTR ", "FCOM\tQWORD PTR ", + "FCOMP\tQWORD PTR ", + "FSUB\tQWORD PTR ", "FSUBR\tQWORD PTR ", "FDIV\tQWORD PTR ", + "FDIVR\tQWORD PTR ", + + "FADD\t", "FMUL\t", "FCOM\t", "FCOMP\t", + "FSUBR\t", "FSUB\t", "FDIVR\t", "FDIV\t", +}; +#endif /* DEBUG */ + +/* opcode=0xdc */ +void x86emuOp_esc_coprocess_dc(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint X86EMU_FPU_ONLY(destoffset); + u8 X86EMU_FPU_ONLY(stkelem); + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + DECODE_PRINTINSTR32(x86emu_fpu_op_dc_tab, mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + break; + case 3: /* register to register */ + stkelem = (u8)rl; + DECODE_PRINTF2("\tST(%d),ST\n", stkelem); + break; + } +#ifdef X86EMU_FPU_PRESENT + /* execute */ + switch (mod) { + case 3: + switch (rh) { + case 0: + x86emu_fpu_R_fadd(stkelem, X86EMU_FPU_STKTOP); + break; + case 1: + x86emu_fpu_R_fmul(stkelem, X86EMU_FPU_STKTOP); + break; + case 2: + x86emu_fpu_R_fcom(stkelem, X86EMU_FPU_STKTOP); + break; + case 3: + x86emu_fpu_R_fcomp(stkelem, X86EMU_FPU_STKTOP); + break; + case 4: + x86emu_fpu_R_fsubr(stkelem, X86EMU_FPU_STKTOP); + break; + case 5: + x86emu_fpu_R_fsub(stkelem, X86EMU_FPU_STKTOP); + break; + case 6: + x86emu_fpu_R_fdivr(stkelem, X86EMU_FPU_STKTOP); + break; + case 7: + x86emu_fpu_R_fdiv(stkelem, X86EMU_FPU_STKTOP); + break; + } + break; + default: + switch (rh) { + case 0: + x86emu_fpu_M_fadd(X86EMU_FPU_DOUBLE, destoffset); + break; + case 1: + x86emu_fpu_M_fmul(X86EMU_FPU_DOUBLE, destoffset); + break; + case 2: + x86emu_fpu_M_fcom(X86EMU_FPU_DOUBLE, destoffset); + break; + case 3: + x86emu_fpu_M_fcomp(X86EMU_FPU_DOUBLE, destoffset); + break; + case 4: + x86emu_fpu_M_fsub(X86EMU_FPU_DOUBLE, destoffset); + break; + case 5: + x86emu_fpu_M_fsubr(X86EMU_FPU_DOUBLE, destoffset); + break; + case 6: + x86emu_fpu_M_fdiv(X86EMU_FPU_DOUBLE, destoffset); + break; + case 7: + x86emu_fpu_M_fdivr(X86EMU_FPU_DOUBLE, destoffset); + break; + } + } +#endif + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} + +#ifdef DEBUG + +static const char *x86emu_fpu_op_dd_tab[] = { + "FLD\tQWORD PTR ", "ESC_DD\t29,", "FST\tQWORD PTR ", "FSTP\tQWORD PTR ", + "FRSTOR\t", "ESC_DD\t2D,", "FSAVE\t", "FSTSW\t", + + "FLD\tQWORD PTR ", "ESC_DD\t29,", "FST\tQWORD PTR ", "FSTP\tQWORD PTR ", + "FRSTOR\t", "ESC_DD\t2D,", "FSAVE\t", "FSTSW\t", + + "FLD\tQWORD PTR ", "ESC_DD\t29,", "FST\tQWORD PTR ", "FSTP\tQWORD PTR ", + "FRSTOR\t", "ESC_DD\t2D,", "FSAVE\t", "FSTSW\t", + + "FFREE\t", "FXCH\t", "FST\t", "FSTP\t", + "ESC_DD\t2C,", "ESC_DD\t2D,", "ESC_DD\t2E,", "ESC_DD\t2F,", +}; + +#endif /* DEBUG */ + +/* opcode=0xdd */ +void x86emuOp_esc_coprocess_dd(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint X86EMU_FPU_ONLY(destoffset); + u8 X86EMU_FPU_ONLY(stkelem); + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + DECODE_PRINTINSTR32(x86emu_fpu_op_dd_tab, mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + break; + case 3: /* register to register */ + stkelem = (u8)rl; + DECODE_PRINTF2("\tST(%d),ST\n", stkelem); + break; + } +#ifdef X86EMU_FPU_PRESENT + switch (mod) { + case 3: + switch (rh) { + case 0: + x86emu_fpu_R_ffree(stkelem); + break; + case 1: + x86emu_fpu_R_fxch(stkelem); + break; + case 2: + x86emu_fpu_R_fst(stkelem); /* register version */ + break; + case 3: + x86emu_fpu_R_fstp(stkelem); /* register version */ + break; + default: + x86emu_fpu_illegal(); + break; + } + break; + default: + switch (rh) { + case 0: + x86emu_fpu_M_fld(X86EMU_FPU_DOUBLE, destoffset); + break; + case 1: + x86emu_fpu_illegal(); + break; + case 2: + x86emu_fpu_M_fst(X86EMU_FPU_DOUBLE, destoffset); + break; + case 3: + x86emu_fpu_M_fstp(X86EMU_FPU_DOUBLE, destoffset); + break; + case 4: + x86emu_fpu_M_frstor(X86EMU_FPU_WORD, destoffset); + break; + case 5: + x86emu_fpu_illegal(); + break; + case 6: + x86emu_fpu_M_fsave(X86EMU_FPU_WORD, destoffset); + break; + case 7: + x86emu_fpu_M_fstsw(X86EMU_FPU_WORD, destoffset); + break; + } + } +#endif + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} + +#ifdef DEBUG + +static const char *x86emu_fpu_op_de_tab[] = +{ + "FIADD\tWORD PTR ", "FIMUL\tWORD PTR ", "FICOM\tWORD PTR ", + "FICOMP\tWORD PTR ", + "FISUB\tWORD PTR ", "FISUBR\tWORD PTR ", "FIDIV\tWORD PTR ", + "FIDIVR\tWORD PTR ", + + "FIADD\tWORD PTR ", "FIMUL\tWORD PTR ", "FICOM\tWORD PTR ", + "FICOMP\tWORD PTR ", + "FISUB\tWORD PTR ", "FISUBR\tWORD PTR ", "FIDIV\tWORD PTR ", + "FIDIVR\tWORD PTR ", + + "FIADD\tWORD PTR ", "FIMUL\tWORD PTR ", "FICOM\tWORD PTR ", + "FICOMP\tWORD PTR ", + "FISUB\tWORD PTR ", "FISUBR\tWORD PTR ", "FIDIV\tWORD PTR ", + "FIDIVR\tWORD PTR ", + + "FADDP\t", "FMULP\t", "FCOMP\t", "FCOMPP\t", + "FSUBRP\t", "FSUBP\t", "FDIVRP\t", "FDIVP\t", +}; + +#endif /* DEBUG */ + +/* opcode=0xde */ +void x86emuOp_esc_coprocess_de(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint X86EMU_FPU_ONLY(destoffset); + u8 X86EMU_FPU_ONLY(stkelem); + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + DECODE_PRINTINSTR32(x86emu_fpu_op_de_tab, mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + break; + case 3: /* register to register */ + stkelem = (u8)rl; + DECODE_PRINTF2("\tST(%d),ST\n", stkelem); + break; + } +#ifdef X86EMU_FPU_PRESENT + switch (mod) { + case 3: + switch (rh) { + case 0: + x86emu_fpu_R_faddp(stkelem, X86EMU_FPU_STKTOP); + break; + case 1: + x86emu_fpu_R_fmulp(stkelem, X86EMU_FPU_STKTOP); + break; + case 2: + x86emu_fpu_R_fcomp(stkelem, X86EMU_FPU_STKTOP); + break; + case 3: + if (stkelem == 1) + x86emu_fpu_R_fcompp(stkelem, X86EMU_FPU_STKTOP); + else + x86emu_fpu_illegal(); + break; + case 4: + x86emu_fpu_R_fsubrp(stkelem, X86EMU_FPU_STKTOP); + break; + case 5: + x86emu_fpu_R_fsubp(stkelem, X86EMU_FPU_STKTOP); + break; + case 6: + x86emu_fpu_R_fdivrp(stkelem, X86EMU_FPU_STKTOP); + break; + case 7: + x86emu_fpu_R_fdivp(stkelem, X86EMU_FPU_STKTOP); + break; + } + break; + default: + switch (rh) { + case 0: + x86emu_fpu_M_fiadd(X86EMU_FPU_WORD, destoffset); + break; + case 1: + x86emu_fpu_M_fimul(X86EMU_FPU_WORD, destoffset); + break; + case 2: + x86emu_fpu_M_ficom(X86EMU_FPU_WORD, destoffset); + break; + case 3: + x86emu_fpu_M_ficomp(X86EMU_FPU_WORD, destoffset); + break; + case 4: + x86emu_fpu_M_fisub(X86EMU_FPU_WORD, destoffset); + break; + case 5: + x86emu_fpu_M_fisubr(X86EMU_FPU_WORD, destoffset); + break; + case 6: + x86emu_fpu_M_fidiv(X86EMU_FPU_WORD, destoffset); + break; + case 7: + x86emu_fpu_M_fidivr(X86EMU_FPU_WORD, destoffset); + break; + } + } +#endif + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} + +#ifdef DEBUG + +static const char *x86emu_fpu_op_df_tab[] = { + /* mod == 00 */ + "FILD\tWORD PTR ", "ESC_DF\t39\n", "FIST\tWORD PTR ", "FISTP\tWORD PTR ", + "FBLD\tTBYTE PTR ", "FILD\tQWORD PTR ", "FBSTP\tTBYTE PTR ", + "FISTP\tQWORD PTR ", + + /* mod == 01 */ + "FILD\tWORD PTR ", "ESC_DF\t39 ", "FIST\tWORD PTR ", "FISTP\tWORD PTR ", + "FBLD\tTBYTE PTR ", "FILD\tQWORD PTR ", "FBSTP\tTBYTE PTR ", + "FISTP\tQWORD PTR ", + + /* mod == 10 */ + "FILD\tWORD PTR ", "ESC_DF\t39 ", "FIST\tWORD PTR ", "FISTP\tWORD PTR ", + "FBLD\tTBYTE PTR ", "FILD\tQWORD PTR ", "FBSTP\tTBYTE PTR ", + "FISTP\tQWORD PTR ", + + /* mod == 11 */ + "FFREE\t", "FXCH\t", "FST\t", "FSTP\t", + "ESC_DF\t3C,", "ESC_DF\t3D,", "ESC_DF\t3E,", "ESC_DF\t3F," +}; + +#endif /* DEBUG */ + +/* opcode=0xdf */ +void x86emuOp_esc_coprocess_df(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint X86EMU_FPU_ONLY(destoffset); + u8 X86EMU_FPU_ONLY(stkelem); + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + DECODE_PRINTINSTR32(x86emu_fpu_op_df_tab, mod, rh, rl); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + DECODE_PRINTF("\n"); + break; + case 1: + destoffset = decode_rm01_address(rl); + DECODE_PRINTF("\n"); + break; + case 2: + destoffset = decode_rm10_address(rl); + DECODE_PRINTF("\n"); + break; + case 3: /* register to register */ + stkelem = (u8)rl; + DECODE_PRINTF2("\tST(%d)\n", stkelem); + break; + } +#ifdef X86EMU_FPU_PRESENT + switch (mod) { + case 3: + switch (rh) { + case 0: + x86emu_fpu_R_ffree(stkelem); + break; + case 1: + x86emu_fpu_R_fxch(stkelem); + break; + case 2: + x86emu_fpu_R_fst(stkelem); /* register version */ + break; + case 3: + x86emu_fpu_R_fstp(stkelem); /* register version */ + break; + default: + x86emu_fpu_illegal(); + break; + } + break; + default: + switch (rh) { + case 0: + x86emu_fpu_M_fild(X86EMU_FPU_WORD, destoffset); + break; + case 1: + x86emu_fpu_illegal(); + break; + case 2: + x86emu_fpu_M_fist(X86EMU_FPU_WORD, destoffset); + break; + case 3: + x86emu_fpu_M_fistp(X86EMU_FPU_WORD, destoffset); + break; + case 4: + x86emu_fpu_M_fbld(X86EMU_FPU_BSD, destoffset); + break; + case 5: + x86emu_fpu_M_fild(X86EMU_FPU_LONG, destoffset); + break; + case 6: + x86emu_fpu_M_fbstp(X86EMU_FPU_BSD, destoffset); + break; + case 7: + x86emu_fpu_M_fistp(X86EMU_FPU_LONG, destoffset); + break; + } + } +#endif + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR_NO_TRACE(); +} diff --git a/src/device/oprom/x86emu/fpu.h b/src/device/oprom/x86emu/fpu.h new file mode 100644 index 0000000000..5fb271463b --- /dev/null +++ b/src/device/oprom/x86emu/fpu.h @@ -0,0 +1,61 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for FPU instruction decoding. +* +****************************************************************************/ + +#ifndef __X86EMU_FPU_H +#define __X86EMU_FPU_H + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + +/* these have to be defined, whether 8087 support compiled in or not. */ + +extern void x86emuOp_esc_coprocess_d8 (u8 op1); +extern void x86emuOp_esc_coprocess_d9 (u8 op1); +extern void x86emuOp_esc_coprocess_da (u8 op1); +extern void x86emuOp_esc_coprocess_db (u8 op1); +extern void x86emuOp_esc_coprocess_dc (u8 op1); +extern void x86emuOp_esc_coprocess_dd (u8 op1); +extern void x86emuOp_esc_coprocess_de (u8 op1); +extern void x86emuOp_esc_coprocess_df (u8 op1); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif + +#endif /* __X86EMU_FPU_H */ diff --git a/src/device/oprom/x86emu/ops.c b/src/device/oprom/x86emu/ops.c new file mode 100644 index 0000000000..6917a08162 --- /dev/null +++ b/src/device/oprom/x86emu/ops.c @@ -0,0 +1,5510 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file includes subroutines to implement the decoding +* and emulation of all the x86 processor instructions. +* +* There are approximately 250 subroutines in here, which correspond +* to the 256 byte-"opcodes" found on the 8086. The table which +* dispatches this is found in the files optab.[ch]. +* +* Each opcode proc has a comment preceeding it which gives it's table +* address. Several opcodes are missing (undefined) in the table. +* +* Each proc includes information for decoding (DECODE_PRINTF and +* DECODE_PRINTF2), debugging (TRACE_REGS, SINGLE_STEP), and misc +* functions (START_OF_INSTR, END_OF_INSTR). +* +* Many of the procedures are *VERY* similar in coding. This has +* allowed for a very large amount of code to be generated in a fairly +* short amount of time (i.e. cut, paste, and modify). The result is +* that much of the code below could have been folded into subroutines +* for a large reduction in size of this file. The downside would be +* that there would be a penalty in execution speed. The file could +* also have been *MUCH* larger by inlining certain functions which +* were called. This could have resulted even faster execution. The +* prime directive I used to decide whether to inline the code or to +* modularize it, was basically: 1) no unnecessary subroutine calls, +* 2) no routines more than about 200 lines in size, and 3) modularize +* any code that I might not get right the first time. The fetch_* +* subroutines fall into the latter category. The The decode_* fall +* into the second category. The coding of the "switch(mod){ .... }" +* in many of the subroutines below falls into the first category. +* Especially, the coding of {add,and,or,sub,...}_{byte,word} +* subroutines are an especially glaring case of the third guideline. +* Since so much of the code is cloned from other modules (compare +* opcode #00 to opcode #01), making the basic operations subroutine +* calls is especially important; otherwise mistakes in coding an +* "add" would represent a nightmare in maintenance. +* +****************************************************************************/ + +#include "x86emui.h" + +/*----------------------------- Implementation ----------------------------*/ + +/* constant arrays to do several instructions in just one function */ + +#ifdef DEBUG +static const char *x86emu_GenOpName[8] = { + "ADD", "OR", "ADC", "SBB", "AND", "SUB", "XOR", "CMP"}; +#endif + +/* used by several opcodes */ +static u8 (*genop_byte_operation[])(u8 d, u8 s) = +{ + add_byte, /* 00 */ + or_byte, /* 01 */ + adc_byte, /* 02 */ + sbb_byte, /* 03 */ + and_byte, /* 04 */ + sub_byte, /* 05 */ + xor_byte, /* 06 */ + cmp_byte, /* 07 */ +}; + +static u16 (*genop_word_operation[])(u16 d, u16 s) = +{ + add_word, /*00 */ + or_word, /*01 */ + adc_word, /*02 */ + sbb_word, /*03 */ + and_word, /*04 */ + sub_word, /*05 */ + xor_word, /*06 */ + cmp_word, /*07 */ +}; + +static u32 (*genop_long_operation[])(u32 d, u32 s) = +{ + add_long, /*00 */ + or_long, /*01 */ + adc_long, /*02 */ + sbb_long, /*03 */ + and_long, /*04 */ + sub_long, /*05 */ + xor_long, /*06 */ + cmp_long, /*07 */ +}; + +/* used by opcodes 80, c0, d0, and d2. */ +static u8(*opcD0_byte_operation[])(u8 d, u8 s) = +{ + rol_byte, + ror_byte, + rcl_byte, + rcr_byte, + shl_byte, + shr_byte, + shl_byte, /* sal_byte === shl_byte by definition */ + sar_byte, +}; + +/* used by opcodes c1, d1, and d3. */ +static u16(*opcD1_word_operation[])(u16 s, u8 d) = +{ + rol_word, + ror_word, + rcl_word, + rcr_word, + shl_word, + shr_word, + shl_word, /* sal_byte === shl_byte by definition */ + sar_word, +}; + +/* used by opcodes c1, d1, and d3. */ +static u32 (*opcD1_long_operation[])(u32 s, u8 d) = +{ + rol_long, + ror_long, + rcl_long, + rcr_long, + shl_long, + shr_long, + shl_long, /* sal_byte === shl_byte by definition */ + sar_long, +}; + +#ifdef DEBUG + +static const char *opF6_names[8] = + { "TEST\t", "", "NOT\t", "NEG\t", "MUL\t", "IMUL\t", "DIV\t", "IDIV\t" }; + +#endif + +/**************************************************************************** +PARAMETERS: +op1 - Instruction op code + +REMARKS: +Handles illegal opcodes. +****************************************************************************/ +static void x86emuOp_illegal_op( + u8 op1) +{ + START_OF_INSTR(); + if (M.x86.R_SP != 0) { + DECODE_PRINTF("ILLEGAL X86 OPCODE\n"); + TRACE_REGS(); + DB( printf("%04x:%04x: %02X ILLEGAL X86 OPCODE!\n", + M.x86.R_CS, M.x86.R_IP-1,op1)); + HALT_SYS(); + } + else { + /* If we get here, it means the stack pointer is back to zero + * so we are just returning from an emulator service call + * so therte is no need to display an error message. We trap + * the emulator with an 0xF1 opcode to finish the service + * call. + */ + X86EMU_halt_sys(); + } + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcodes 0x00, 0x08, 0x10, 0x18, 0x20, 0x28, 0x30, 0x38 +****************************************************************************/ +static void x86emuOp_genop_byte_RM_R(u8 op1) +{ + int mod, rl, rh; + uint destoffset; + u8 *destreg, *srcreg; + u8 destval; + + op1 = (op1 >> 3) & 0x7; + + START_OF_INSTR(); + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if(mod<3) + { destoffset = decode_rmXX_address(mod,rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = genop_byte_operation[op1](destval, *srcreg); + if (op1 != 7) + store_data_byte(destoffset, destval); + } + else + { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_byte_operation[op1](*destreg, *srcreg); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcodes 0x01, 0x09, 0x11, 0x19, 0x21, 0x29, 0x31, 0x39 +****************************************************************************/ +static void x86emuOp_genop_word_RM_R(u8 op1) +{ + int mod, rl, rh; + uint destoffset; + + op1 = (op1 >> 3) & 0x7; + + START_OF_INSTR(); + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + + if(mod<3) { + destoffset = decode_rmXX_address(mod,rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = genop_long_operation[op1](destval, *srcreg); + if (op1 != 7) + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *srcreg; + + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = genop_word_operation[op1](destval, *srcreg); + if (op1 != 7) + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_long_operation[op1](*destreg, *srcreg); + } else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_word_operation[op1](*destreg, *srcreg); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcodes 0x02, 0x0a, 0x12, 0x1a, 0x22, 0x2a, 0x32, 0x3a +****************************************************************************/ +static void x86emuOp_genop_byte_R_RM(u8 op1) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint srcoffset; + u8 srcval; + + op1 = (op1 >> 3) & 0x7; + + START_OF_INSTR(); + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod,rl); + srcval = fetch_data_byte(srcoffset); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + srcval = *srcreg; + } + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_byte_operation[op1](*destreg, srcval); + + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcodes 0x03, 0x0b, 0x13, 0x1b, 0x23, 0x2b, 0x33, 0x3b +****************************************************************************/ +static void x86emuOp_genop_word_R_RM(u8 op1) +{ + int mod, rl, rh; + uint srcoffset; + u32 *destreg32, srcval; + u16 *destreg; + + op1 = (op1 >> 3) & 0x7; + + START_OF_INSTR(); + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod,rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + destreg32 = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg32 = genop_long_operation[op1](*destreg32, srcval); + } else { + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_word_operation[op1](*destreg, srcval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + destreg32 = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg32 = genop_long_operation[op1](*destreg32, *srcreg); + } else { + u16 *srcreg; + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = genop_word_operation[op1](*destreg, *srcreg); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcodes 0x04, 0x0c, 0x14, 0x1c, 0x24, 0x2c, 0x34, 0x3c +****************************************************************************/ +static void x86emuOp_genop_byte_AL_IMM(u8 op1) +{ + u8 srcval; + + op1 = (op1 >> 3) & 0x7; + + START_OF_INSTR(); + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\tAL,"); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + M.x86.R_AL = genop_byte_operation[op1](M.x86.R_AL, srcval); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcodes 0x05, 0x0d, 0x15, 0x1d, 0x25, 0x2d, 0x35, 0x3d +****************************************************************************/ +static void x86emuOp_genop_word_AX_IMM(u8 op1) +{ + u32 srcval; + + op1 = (op1 >> 3) & 0x7; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\tEAX,"); + srcval = fetch_long_imm(); + } else { + DECODE_PRINTF(x86emu_GenOpName[op1]); + DECODE_PRINTF("\tAX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = genop_long_operation[op1](M.x86.R_EAX, srcval); + } else { + M.x86.R_AX = genop_word_operation[op1](M.x86.R_AX, (u16)srcval); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x06 +****************************************************************************/ +static void x86emuOp_push_ES(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tES\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_ES); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x07 +****************************************************************************/ +static void x86emuOp_pop_ES(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tES\n"); + TRACE_AND_STEP(); + M.x86.R_ES = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0e +****************************************************************************/ +static void x86emuOp_push_CS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tCS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_CS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f. Escape for two-byte opcode (286 or better) +****************************************************************************/ +static void x86emuOp_two_byte(u8 X86EMU_UNUSED(op1)) +{ + u8 op2 = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++)); + INC_DECODED_INST_LEN(1); + (*x86emu_optab2[op2])(op2); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x16 +****************************************************************************/ +static void x86emuOp_push_SS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tSS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_SS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x17 +****************************************************************************/ +static void x86emuOp_pop_SS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tSS\n"); + TRACE_AND_STEP(); + M.x86.R_SS = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x1e +****************************************************************************/ +static void x86emuOp_push_DS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tDS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_DS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x1f +****************************************************************************/ +static void x86emuOp_pop_DS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tDS\n"); + TRACE_AND_STEP(); + M.x86.R_DS = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x26 +****************************************************************************/ +static void x86emuOp_segovr_ES(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("ES:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_ES; + /* + * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 + * opcode subroutines we do not want to do this. + */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x27 +****************************************************************************/ +static void x86emuOp_daa(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("DAA\n"); + TRACE_AND_STEP(); + M.x86.R_AL = daa_byte(M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x2e +****************************************************************************/ +static void x86emuOp_segovr_CS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("CS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_CS; + /* note no DECODE_CLEAR_SEGOVR here. */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x2f +****************************************************************************/ +static void x86emuOp_das(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("DAS\n"); + TRACE_AND_STEP(); + M.x86.R_AL = das_byte(M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x36 +****************************************************************************/ +static void x86emuOp_segovr_SS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("SS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_SS; + /* no DECODE_CLEAR_SEGOVR ! */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x37 +****************************************************************************/ +static void x86emuOp_aaa(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("AAA\n"); + TRACE_AND_STEP(); + M.x86.R_AX = aaa_word(M.x86.R_AX); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x3e +****************************************************************************/ +static void x86emuOp_segovr_DS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("DS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_DS; + /* NO DECODE_CLEAR_SEGOVR! */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x3f +****************************************************************************/ +static void x86emuOp_aas(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("AAS\n"); + TRACE_AND_STEP(); + M.x86.R_AX = aas_word(M.x86.R_AX); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x40 - 0x47 +****************************************************************************/ +static void x86emuOp_inc_register(u8 op1) +{ + START_OF_INSTR(); + op1 &= 0x7; + DECODE_PRINTF("INC\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *reg; + reg = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = inc_long(*reg); + } else { + u16 *reg; + reg = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = inc_word(*reg); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x48 - 0x4F +****************************************************************************/ +static void x86emuOp_dec_register(u8 op1) +{ + START_OF_INSTR(); + op1 &= 0x7; + DECODE_PRINTF("DEC\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *reg; + reg = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = dec_long(*reg); + } else { + u16 *reg; + reg = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = dec_word(*reg); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x50 - 0x57 +****************************************************************************/ +static void x86emuOp_push_register(u8 op1) +{ + START_OF_INSTR(); + op1 &= 0x7; + DECODE_PRINTF("PUSH\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *reg; + reg = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_long(*reg); + } else { + u16 *reg; + reg = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_word(*reg); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x58 - 0x5F +****************************************************************************/ +static void x86emuOp_pop_register(u8 op1) +{ + START_OF_INSTR(); + op1 &= 0x7; + DECODE_PRINTF("POP\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *reg; + reg = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = pop_long(); + } else { + u16 *reg; + reg = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *reg = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x60 +****************************************************************************/ +static void x86emuOp_push_all(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("PUSHAD\n"); + } else { + DECODE_PRINTF("PUSHA\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 old_sp = M.x86.R_ESP; + + push_long(M.x86.R_EAX); + push_long(M.x86.R_ECX); + push_long(M.x86.R_EDX); + push_long(M.x86.R_EBX); + push_long(old_sp); + push_long(M.x86.R_EBP); + push_long(M.x86.R_ESI); + push_long(M.x86.R_EDI); + } else { + u16 old_sp = M.x86.R_SP; + + push_word(M.x86.R_AX); + push_word(M.x86.R_CX); + push_word(M.x86.R_DX); + push_word(M.x86.R_BX); + push_word(old_sp); + push_word(M.x86.R_BP); + push_word(M.x86.R_SI); + push_word(M.x86.R_DI); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x61 +****************************************************************************/ +static void x86emuOp_pop_all(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("POPAD\n"); + } else { + DECODE_PRINTF("POPA\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EDI = pop_long(); + M.x86.R_ESI = pop_long(); + M.x86.R_EBP = pop_long(); + M.x86.R_ESP += 4; /* skip ESP */ + M.x86.R_EBX = pop_long(); + M.x86.R_EDX = pop_long(); + M.x86.R_ECX = pop_long(); + M.x86.R_EAX = pop_long(); + } else { + M.x86.R_DI = pop_word(); + M.x86.R_SI = pop_word(); + M.x86.R_BP = pop_word(); + M.x86.R_SP += 2; /* skip SP */ + M.x86.R_BX = pop_word(); + M.x86.R_DX = pop_word(); + M.x86.R_CX = pop_word(); + M.x86.R_AX = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/*opcode 0x62 ILLEGAL OP, calls x86emuOp_illegal_op() */ +/*opcode 0x63 ILLEGAL OP, calls x86emuOp_illegal_op() */ + +/**************************************************************************** +REMARKS: +Handles opcode 0x64 +****************************************************************************/ +static void x86emuOp_segovr_FS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("FS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_FS; + /* + * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 + * opcode subroutines we do not want to do this. + */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x65 +****************************************************************************/ +static void x86emuOp_segovr_GS(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("GS:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_SEGOVR_GS; + /* + * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 + * opcode subroutines we do not want to do this. + */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x66 - prefix for 32-bit register +****************************************************************************/ +static void x86emuOp_prefix_data(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("DATA:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_PREFIX_DATA; + /* note no DECODE_CLEAR_SEGOVR here. */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x67 - prefix for 32-bit address +****************************************************************************/ +static void x86emuOp_prefix_addr(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("ADDR:\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_PREFIX_ADDR; + /* note no DECODE_CLEAR_SEGOVR here. */ + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x68 +****************************************************************************/ +static void x86emuOp_push_word_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 imm; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + imm = fetch_long_imm(); + } else { + imm = fetch_word_imm(); + } + DECODE_PRINTF2("PUSH\t%x\n", imm); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(imm); + } else { + push_word((u16)imm); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x69 +****************************************************************************/ +static void x86emuOp_imul_word_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("IMUL\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo,res_hi; + s32 imm; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_long(srcoffset); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm); + if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || + (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg; + u16 srcval; + u32 res; + s16 imm; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_word(srcoffset); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + res = (s16)srcval * (s16)imm; + if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || + (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u16)res; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + u32 res_lo,res_hi; + s32 imm; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm); + if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || + (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg,*srcreg; + u32 res; + s16 imm; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + res = (s16)*srcreg * (s16)imm; + if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || + (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u16)res; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6a +****************************************************************************/ +static void x86emuOp_push_byte_IMM(u8 X86EMU_UNUSED(op1)) +{ + s16 imm; + + START_OF_INSTR(); + imm = (s8)fetch_byte_imm(); + DECODE_PRINTF2("PUSH\t%d\n", imm); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(imm); + } else { + push_word(imm); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6b +****************************************************************************/ +static void x86emuOp_imul_byte_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + s8 imm; + + START_OF_INSTR(); + DECODE_PRINTF("IMUL\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo,res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_long(srcoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm); + if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || + (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg; + u16 srcval; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcval = fetch_data_word(srcoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + res = (s16)srcval * (s16)imm; + if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || + (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u16)res; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + u32 res_lo,res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm); + if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) || + (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg,*srcreg; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", (s32)imm); + TRACE_AND_STEP(); + res = (s16)*srcreg * (s16)imm; + if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) || + (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } + *destreg = (u16)res; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6c +****************************************************************************/ +static void x86emuOp_ins_byte(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("INSB\n"); + ins(1); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6d +****************************************************************************/ +static void x86emuOp_ins_word(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INSD\n"); + ins(4); + } else { + DECODE_PRINTF("INSW\n"); + ins(2); + } + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6e +****************************************************************************/ +static void x86emuOp_outs_byte(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("OUTSB\n"); + outs(1); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x6f +****************************************************************************/ +static void x86emuOp_outs_word(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("OUTSD\n"); + outs(4); + } else { + DECODE_PRINTF("OUTSW\n"); + outs(2); + } + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x70 - 0x7F +****************************************************************************/ +static void x86emuOp_jump_near_cond(u8 op1) +{ + s8 offset; + u16 target; + int cond; + + /* jump to byte offset if overflow flag is set */ + START_OF_INSTR(); + cond = x86emu_check_jump_condition(op1 & 0xF); + offset = (s8)fetch_byte_imm(); + target = (u16)(M.x86.R_IP + (s16)offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (cond) { + M.x86.R_IP = target; + JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, M.x86.R_IP, " NEAR COND "); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x80 +****************************************************************************/ +static void x86emuOp_opc80_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 imm; + u8 destval; + + /* + * Weirdo special case instruction format. Part of the opcode + * held below in "RH". Doubly nested case would result, except + * that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_byte_operation[rh]) (destval, imm); + if (rh != 7) + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + *destreg = (*genop_byte_operation[rh]) (*destreg, imm); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x81 +****************************************************************************/ +static void x86emuOp_opc81_word_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + /* + * Weirdo special case instruction format. Part of the opcode + * held below in "RH". Doubly nested case would result, except + * that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } + } +#endif + /* + * Know operation, decode the mod byte to find the addressing + * mode. + */ + if (mod < 3) { + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval,imm; + + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + imm = fetch_long_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_long_operation[rh]) (destval, imm); + if (rh != 7) + store_data_long(destoffset, destval); + } else { + u16 destval,imm; + + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_word_operation[rh]) (destval, imm); + if (rh != 7) + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, imm; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + imm = fetch_long_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + *destreg = (*genop_long_operation[rh]) (*destreg, imm); + } else { + u16 *destreg, imm; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + *destreg = (*genop_word_operation[rh]) (*destreg, imm); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x82 +****************************************************************************/ +static void x86emuOp_opc82_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 imm; + u8 destval; + + /* + * Weirdo special case instruction format. Part of the opcode + * held below in "RH". Doubly nested case would result, except + * that the decoded instruction Similar to opcode 81, except that + * the immediate byte is sign extended to a word length. + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + destval = fetch_data_byte(destoffset); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_byte_operation[rh]) (destval, imm); + if (rh != 7) + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + *destreg = (*genop_byte_operation[rh]) (*destreg, imm); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x83 +****************************************************************************/ +static void x86emuOp_opc83_word_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + /* + * Weirdo special case instruction format. Part of the opcode + * held below in "RH". Doubly nested case would result, except + * that the decoded instruction Similar to opcode 81, except that + * the immediate byte is sign extended to a word length. + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ADD\t"); + break; + case 1: + DECODE_PRINTF("OR\t"); + break; + case 2: + DECODE_PRINTF("ADC\t"); + break; + case 3: + DECODE_PRINTF("SBB\t"); + break; + case 4: + DECODE_PRINTF("AND\t"); + break; + case 5: + DECODE_PRINTF("SUB\t"); + break; + case 6: + DECODE_PRINTF("XOR\t"); + break; + case 7: + DECODE_PRINTF("CMP\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + if (mod < 3) { + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod,rl); + + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval,imm; + + destval = fetch_data_long(destoffset); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_long_operation[rh]) (destval, imm); + if (rh != 7) + store_data_long(destoffset, destval); + } else { + u16 destval,imm; + + destval = fetch_data_word(destoffset); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + destval = (*genop_word_operation[rh]) (destval, imm); + if (rh != 7) + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, imm; + + destreg = DECODE_RM_LONG_REGISTER(rl); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + *destreg = (*genop_long_operation[rh]) (*destreg, imm); + } else { + u16 *destreg, imm; + + destreg = DECODE_RM_WORD_REGISTER(rl); + imm = (s8) fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + *destreg = (*genop_word_operation[rh]) (*destreg, imm); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x84 +****************************************************************************/ +static void x86emuOp_test_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + u8 destval; + + START_OF_INSTR(); + DECODE_PRINTF("TEST\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_byte(destval, *srcreg); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_byte(*destreg, *srcreg); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x85 +****************************************************************************/ +static void x86emuOp_test_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("TEST\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *srcreg; + + DECODE_PRINTF(","); + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_long(destval, *srcreg); + } else { + u16 destval; + u16 *srcreg; + + DECODE_PRINTF(","); + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_word(destval, *srcreg); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_long(*destreg, *srcreg); + } else { + u16 *destreg,*srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + test_word(*destreg, *srcreg); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x86 +****************************************************************************/ +static void x86emuOp_xchg_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + u8 destval; + u8 tmp; + + START_OF_INSTR(); + DECODE_PRINTF("XCHG\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + destval = fetch_data_byte(destoffset); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = *destreg; + *destreg = tmp; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x87 +****************************************************************************/ +static void x86emuOp_xchg_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("XCHG\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + u32 destval,tmp; + + destval = fetch_data_long(destoffset); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_long(destoffset, destval); + } else { + u16 *srcreg; + u16 destval,tmp; + + destval = fetch_data_word(destoffset); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = destval; + destval = tmp; + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + u32 tmp; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = *destreg; + *destreg = tmp; + } else { + u16 *destreg,*srcreg; + u16 tmp; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = *srcreg; + *srcreg = *destreg; + *destreg = tmp; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x88 +****************************************************************************/ +static void x86emuOp_mov_byte_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_byte(destoffset, *srcreg); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x89 +****************************************************************************/ +static void x86emuOp_mov_word_RM_R(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_long(destoffset, *srcreg); + } else { + u16 *srcreg; + + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + store_data_word(destoffset, *srcreg); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } else { + u16 *destreg,*srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8a +****************************************************************************/ +static void x86emuOp_mov_byte_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg, *srcreg; + uint srcoffset; + u8 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8b +****************************************************************************/ +static void x86emuOp_mov_word_R_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_long(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg, *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } else { + u16 *destreg, *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8c +****************************************************************************/ +static void x86emuOp_mov_word_RM_SR(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u16 *destreg, *srcreg; + uint destoffset; + u16 destval; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + srcreg = decode_rm_seg_register(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = *srcreg; + store_data_word(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + srcreg = decode_rm_seg_register(rh); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8d +****************************************************************************/ +static void x86emuOp_lea_word_R_M(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LEA\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_ADDR) { + u32 *srcreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *srcreg = (u32)destoffset; + } else { + u16 *srcreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *srcreg = (u16)destoffset; + } + } + /* else { undefined. Do nothing. } */ + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8e +****************************************************************************/ +static void x86emuOp_mov_word_SR_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u16 *destreg, *srcreg; + uint srcoffset; + u16 srcval; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destreg = decode_rm_seg_register(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { /* register to register */ + destreg = decode_rm_seg_register(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + /* + * Clean up, and reset all the R_xSP pointers to the correct + * locations. This is about 3x too much overhead (doing all the + * segreg ptrs when only one is needed, but this instruction + * *cannot* be that common, and this isn't too much work anyway. + */ + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x8f +****************************************************************************/ +static void x86emuOp_pop_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("POP\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (rh != 0) { + DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n"); + HALT_SYS(); + } + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = pop_long(); + store_data_long(destoffset, destval); + } else { + u16 destval; + + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = pop_word(); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = pop_long(); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = pop_word(); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x90 +****************************************************************************/ +static void x86emuOp_nop(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("NOP\n"); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x91-0x97 +****************************************************************************/ +static void x86emuOp_xchg_word_AX_register(u8 X86EMU_UNUSED(op1)) +{ + u32 tmp; + + op1 &= 0x7; + + START_OF_INSTR(); + + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *reg32; + DECODE_PRINTF("XCHG\tEAX,"); + reg32 = DECODE_RM_LONG_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = M.x86.R_EAX; + M.x86.R_EAX = *reg32; + *reg32 = tmp; + } else { + u16 *reg16; + DECODE_PRINTF("XCHG\tAX,"); + reg16 = DECODE_RM_WORD_REGISTER(op1); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + tmp = M.x86.R_AX; + M.x86.R_AX = *reg16; + *reg16 = (u16)tmp; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x98 +****************************************************************************/ +static void x86emuOp_cbw(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("CWDE\n"); + } else { + DECODE_PRINTF("CBW\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + if (M.x86.R_AX & 0x8000) { + M.x86.R_EAX |= 0xffff0000; + } else { + M.x86.R_EAX &= 0x0000ffff; + } + } else { + if (M.x86.R_AL & 0x80) { + M.x86.R_AH = 0xff; + } else { + M.x86.R_AH = 0x0; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x99 +****************************************************************************/ +static void x86emuOp_cwd(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("CDQ\n"); + } else { + DECODE_PRINTF("CWD\n"); + } + DECODE_PRINTF("CWD\n"); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + if (M.x86.R_EAX & 0x80000000) { + M.x86.R_EDX = 0xffffffff; + } else { + M.x86.R_EDX = 0x0; + } + } else { + if (M.x86.R_AX & 0x8000) { + M.x86.R_DX = 0xffff; + } else { + M.x86.R_DX = 0x0; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9a +****************************************************************************/ +static void x86emuOp_call_far_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 farseg, faroff; + + START_OF_INSTR(); + DECODE_PRINTF("CALL\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + faroff = fetch_long_imm(); + farseg = fetch_word_imm(); + } else { + faroff = fetch_word_imm(); + farseg = fetch_word_imm(); + } + DECODE_PRINTF2("%04x:", farseg); + DECODE_PRINTF2("%04x\n", faroff); + CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, farseg, faroff, "FAR "); + + /* XXX + * + * Hooked interrupt vectors calling into our "BIOS" will cause + * problems unless all intersegment stuff is checked for BIOS + * access. Check needed here. For moment, let it alone. + */ + TRACE_AND_STEP(); + push_word(M.x86.R_CS); + M.x86.R_CS = farseg; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(M.x86.R_EIP); + } else { + push_word(M.x86.R_IP); + } + M.x86.R_EIP = faroff & 0xffff; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9b +****************************************************************************/ +static void x86emuOp_wait(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("WAIT"); + TRACE_AND_STEP(); + /* NADA. */ + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9c +****************************************************************************/ +static void x86emuOp_pushf_word(u8 X86EMU_UNUSED(op1)) +{ + u32 flags; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("PUSHFD\n"); + } else { + DECODE_PRINTF("PUSHF\n"); + } + TRACE_AND_STEP(); + + /* clear out *all* bits not representing flags, and turn on real bits */ + flags = (M.x86.R_EFLG & F_MSK) | F_ALWAYS_ON; + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(flags); + } else { + push_word((u16)flags); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9d +****************************************************************************/ +static void x86emuOp_popf_word(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("POPFD\n"); + } else { + DECODE_PRINTF("POPF\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EFLG = pop_long(); + } else { + M.x86.R_FLG = pop_word(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9e +****************************************************************************/ +static void x86emuOp_sahf(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("SAHF\n"); + TRACE_AND_STEP(); + /* clear the lower bits of the flag register */ + M.x86.R_FLG &= 0xffffff00; + /* or in the AH register into the flags register */ + M.x86.R_FLG |= M.x86.R_AH; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x9f +****************************************************************************/ +static void x86emuOp_lahf(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("LAHF\n"); + TRACE_AND_STEP(); + M.x86.R_AH = (u8)(M.x86.R_FLG & 0xff); + /*undocumented TC++ behavior??? Nope. It's documented, but + you have too look real hard to notice it. */ + M.x86.R_AH |= 0x2; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa0 +****************************************************************************/ +static void x86emuOp_mov_AL_M_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 offset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\tAL,"); + offset = fetch_word_imm(); + DECODE_PRINTF2("[%04x]\n", offset); + TRACE_AND_STEP(); + M.x86.R_AL = fetch_data_byte(offset); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa1 +****************************************************************************/ +static void x86emuOp_mov_AX_M_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 offset; + + START_OF_INSTR(); + offset = fetch_word_imm(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF2("MOV\tEAX,[%04x]\n", offset); + } else { + DECODE_PRINTF2("MOV\tAX,[%04x]\n", offset); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = fetch_data_long(offset); + } else { + M.x86.R_AX = fetch_data_word(offset); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa2 +****************************************************************************/ +static void x86emuOp_mov_M_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 offset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + offset = fetch_word_imm(); + DECODE_PRINTF2("[%04x],AL\n", offset); + TRACE_AND_STEP(); + store_data_byte(offset, M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa3 +****************************************************************************/ +static void x86emuOp_mov_M_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 offset; + + START_OF_INSTR(); + offset = fetch_word_imm(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF2("MOV\t[%04x],EAX\n", offset); + } else { + DECODE_PRINTF2("MOV\t[%04x],AX\n", offset); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + store_data_long(offset, M.x86.R_EAX); + } else { + store_data_word(offset, M.x86.R_AX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa4 +****************************************************************************/ +static void x86emuOp_movs_byte(u8 X86EMU_UNUSED(op1)) +{ + u8 val; + u32 count; + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("MOVS\tBYTE\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + TRACE_AND_STEP(); + count = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until (E)CX is ZERO. */ + count = (M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX; + M.x86.R_CX = 0; + if (M.x86.mode & SYSMODE_32BIT_REP) + M.x86.R_ECX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + while (count--) { + val = fetch_data_byte(M.x86.R_SI); + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, val); + M.x86.R_SI += inc; + M.x86.R_DI += inc; + if (M.x86.intr & INTR_HALTED) + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa5 +****************************************************************************/ +static void x86emuOp_movs_word(u8 X86EMU_UNUSED(op1)) +{ + u32 val; + int inc; + u32 count; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("MOVS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; + } else { + DECODE_PRINTF("MOVS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; + } + TRACE_AND_STEP(); + count = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until (E)CX is ZERO. */ + count = (M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX; + M.x86.R_CX = 0; + if (M.x86.mode & SYSMODE_32BIT_REP) + M.x86.R_ECX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + while (count--) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long(M.x86.R_SI); + store_data_long_abs(M.x86.R_ES, M.x86.R_DI, val); + } else { + val = fetch_data_word(M.x86.R_SI); + store_data_word_abs(M.x86.R_ES, M.x86.R_DI, (u16)val); + } + M.x86.R_SI += inc; + M.x86.R_DI += inc; + if (M.x86.intr & INTR_HALTED) + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa6 +****************************************************************************/ +static void x86emuOp_cmps_byte(u8 X86EMU_UNUSED(op1)) +{ + s8 val1, val2; + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("CMPS\tBYTE\n"); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* REPE */ + /* move them until (E)CX is ZERO. */ + while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) { + val1 = fetch_data_byte(M.x86.R_SI); + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(val1, val2); + if (M.x86.mode & SYSMODE_32BIT_REP) + M.x86.R_ECX -= 1; + else + M.x86.R_CX -= 1; + M.x86.R_SI += inc; + M.x86.R_DI += inc; + if ( (M.x86.mode & SYSMODE_PREFIX_REPE) && (ACCESS_FLAG(F_ZF) == 0) ) break; + if ( (M.x86.mode & SYSMODE_PREFIX_REPNE) && ACCESS_FLAG(F_ZF) ) break; + if (M.x86.intr & INTR_HALTED) + break; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } else { + val1 = fetch_data_byte(M.x86.R_SI); + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(val1, val2); + M.x86.R_SI += inc; + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa7 +****************************************************************************/ +static void x86emuOp_cmps_word(u8 X86EMU_UNUSED(op1)) +{ + u32 val1,val2; + int inc; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("CMPS\tDWORD\n"); + inc = 4; + } else { + DECODE_PRINTF("CMPS\tWORD\n"); + inc = 2; + } + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -inc; + + TRACE_AND_STEP(); + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* REPE */ + /* move them until (E)CX is ZERO. */ + while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val1 = fetch_data_long(M.x86.R_SI); + val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(val1, val2); + } else { + val1 = fetch_data_word(M.x86.R_SI); + val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word((u16)val1, (u16)val2); + } + if (M.x86.mode & SYSMODE_32BIT_REP) + M.x86.R_ECX -= 1; + else + M.x86.R_CX -= 1; + M.x86.R_SI += inc; + M.x86.R_DI += inc; + if ( (M.x86.mode & SYSMODE_PREFIX_REPE) && ACCESS_FLAG(F_ZF) == 0 ) break; + if ( (M.x86.mode & SYSMODE_PREFIX_REPNE) && ACCESS_FLAG(F_ZF) ) break; + if (M.x86.intr & INTR_HALTED) + break; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } else { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val1 = fetch_data_long(M.x86.R_SI); + val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(val1, val2); + } else { + val1 = fetch_data_word(M.x86.R_SI); + val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word((u16)val1, (u16)val2); + } + M.x86.R_SI += inc; + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa8 +****************************************************************************/ +static void x86emuOp_test_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + int imm; + + START_OF_INSTR(); + DECODE_PRINTF("TEST\tAL,"); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%04x\n", imm); + TRACE_AND_STEP(); + test_byte(M.x86.R_AL, (u8)imm); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xa9 +****************************************************************************/ +static void x86emuOp_test_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("TEST\tEAX,"); + srcval = fetch_long_imm(); + } else { + DECODE_PRINTF("TEST\tAX,"); + srcval = fetch_word_imm(); + } + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + test_long(M.x86.R_EAX, srcval); + } else { + test_word(M.x86.R_AX, (u16)srcval); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xaa +****************************************************************************/ +static void x86emuOp_stos_byte(u8 X86EMU_UNUSED(op1)) +{ + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("STOS\tBYTE\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + TRACE_AND_STEP(); + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until (E)CX is ZERO. */ + while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) { + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL); + if (M.x86.mode & SYSMODE_32BIT_REP) + M.x86.R_ECX -= 1; + else + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (M.x86.intr & INTR_HALTED) + break; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } else { + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL); + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xab +****************************************************************************/ +static void x86emuOp_stos_word(u8 X86EMU_UNUSED(op1)) +{ + int inc; + u32 count; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("STOS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; + } else { + DECODE_PRINTF("STOS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; + } + TRACE_AND_STEP(); + count = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until (E)CX is ZERO. */ + count = (M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX; + M.x86.R_CX = 0; + if (M.x86.mode & SYSMODE_32BIT_REP) + M.x86.R_ECX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + while (count--) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + store_data_long_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_EAX); + } else { + store_data_word_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AX); + } + M.x86.R_DI += inc; + if (M.x86.intr & INTR_HALTED) + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xac +****************************************************************************/ +static void x86emuOp_lods_byte(u8 X86EMU_UNUSED(op1)) +{ + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("LODS\tBYTE\n"); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until (E)CX is ZERO. */ + while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) { + M.x86.R_AL = fetch_data_byte(M.x86.R_SI); + if (M.x86.mode & SYSMODE_32BIT_REP) + M.x86.R_ECX -= 1; + else + M.x86.R_CX -= 1; + M.x86.R_SI += inc; + if (M.x86.intr & INTR_HALTED) + break; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } else { + M.x86.R_AL = fetch_data_byte(M.x86.R_SI); + M.x86.R_SI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xad +****************************************************************************/ +static void x86emuOp_lods_word(u8 X86EMU_UNUSED(op1)) +{ + int inc; + u32 count; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("LODS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; + } else { + DECODE_PRINTF("LODS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; + } + TRACE_AND_STEP(); + count = 1; + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* move them until (E)CX is ZERO. */ + count = (M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX; + M.x86.R_CX = 0; + if (M.x86.mode & SYSMODE_32BIT_REP) + M.x86.R_ECX = 0; + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } + while (count--) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = fetch_data_long(M.x86.R_SI); + } else { + M.x86.R_AX = fetch_data_word(M.x86.R_SI); + } + M.x86.R_SI += inc; + if (M.x86.intr & INTR_HALTED) + break; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xae +****************************************************************************/ +static void x86emuOp_scas_byte(u8 X86EMU_UNUSED(op1)) +{ + s8 val2; + int inc; + + START_OF_INSTR(); + DECODE_PRINTF("SCAS\tBYTE\n"); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -1; + else + inc = 1; + if (M.x86.mode & SYSMODE_PREFIX_REPE) { + /* REPE */ + /* move them until (E)CX is ZERO. */ + while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) { + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(M.x86.R_AL, val2); + if (M.x86.mode & SYSMODE_32BIT_REP) + M.x86.R_ECX -= 1; + else + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF) == 0) + break; + if (M.x86.intr & INTR_HALTED) + break; + } + M.x86.mode &= ~SYSMODE_PREFIX_REPE; + } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { + /* REPNE */ + /* move them until (E)CX is ZERO. */ + while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) { + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(M.x86.R_AL, val2); + if (M.x86.mode & SYSMODE_32BIT_REP) + M.x86.R_ECX -= 1; + else + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF)) + break; /* zero flag set means equal */ + if (M.x86.intr & INTR_HALTED) + break; + } + M.x86.mode &= ~SYSMODE_PREFIX_REPNE; + } else { + val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); + cmp_byte(M.x86.R_AL, val2); + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xaf +****************************************************************************/ +static void x86emuOp_scas_word(u8 X86EMU_UNUSED(op1)) +{ + int inc; + u32 val; + + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("SCAS\tDWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -4; + else + inc = 4; + } else { + DECODE_PRINTF("SCAS\tWORD\n"); + if (ACCESS_FLAG(F_DF)) /* down */ + inc = -2; + else + inc = 2; + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_REPE) { + /* REPE */ + /* move them until (E)CX is ZERO. */ + while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(M.x86.R_EAX, val); + } else { + val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word(M.x86.R_AX, (u16)val); + } + if (M.x86.mode & SYSMODE_32BIT_REP) + M.x86.R_ECX -= 1; + else + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF) == 0) + break; + if (M.x86.intr & INTR_HALTED) + break; + } + M.x86.mode &= ~SYSMODE_PREFIX_REPE; + } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { + /* REPNE */ + /* move them until (E)CX is ZERO. */ + while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(M.x86.R_EAX, val); + } else { + val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word(M.x86.R_AX, (u16)val); + } + if (M.x86.mode & SYSMODE_32BIT_REP) + M.x86.R_ECX -= 1; + else + M.x86.R_CX -= 1; + M.x86.R_DI += inc; + if (ACCESS_FLAG(F_ZF)) + break; /* zero flag set means equal */ + if (M.x86.intr & INTR_HALTED) + break; + } + M.x86.mode &= ~SYSMODE_PREFIX_REPNE; + } else { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); + cmp_long(M.x86.R_EAX, val); + } else { + val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); + cmp_word(M.x86.R_AX, (u16)val); + } + M.x86.R_DI += inc; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xb0 - 0xb7 +****************************************************************************/ +static void x86emuOp_mov_byte_register_IMM(u8 op1) +{ + u8 imm, *ptr; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + ptr = DECODE_RM_BYTE_REGISTER(op1 & 0x7); + DECODE_PRINTF(","); + imm = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + *ptr = imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xb8 - 0xbf +****************************************************************************/ +static void x86emuOp_mov_word_register_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 srcval; + + op1 &= 0x7; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *reg32; + reg32 = DECODE_RM_LONG_REGISTER(op1); + srcval = fetch_long_imm(); + DECODE_PRINTF2(",%x\n", srcval); + TRACE_AND_STEP(); + *reg32 = srcval; + } else { + u16 *reg16; + reg16 = DECODE_RM_WORD_REGISTER(op1); + srcval = fetch_word_imm(); + DECODE_PRINTF2(",%x\n", srcval); + TRACE_AND_STEP(); + *reg16 = (u16)srcval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc0 +****************************************************************************/ +static void x86emuOp_opcC0_byte_RM_MEM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 destval; + u8 amt; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, amt); + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (*destreg, amt); + *destreg = destval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc1 +****************************************************************************/ +static void x86emuOp_opcC1_word_RM_MEM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + u8 amt; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, amt); + store_data_long(destoffset, destval); + } else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, amt); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + TRACE_AND_STEP(); + *destreg = (*opcD1_long_operation[rh]) (*destreg, amt); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + amt = fetch_byte_imm(); + DECODE_PRINTF2(",%x\n", amt); + TRACE_AND_STEP(); + *destreg = (*opcD1_word_operation[rh]) (*destreg, amt); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc2 +****************************************************************************/ +static void x86emuOp_ret_near_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 imm; + + START_OF_INSTR(); + DECODE_PRINTF("RET\t"); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + M.x86.R_IP = pop_word(); + RETURN_TRACE(M.x86.saved_cs,M.x86.saved_ip, M.x86.R_CS, M.x86.R_IP, "NEAR"); + M.x86.R_SP += imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc3 +****************************************************************************/ +static void x86emuOp_ret_near(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("RET\n"); + TRACE_AND_STEP(); + M.x86.R_IP = pop_word(); + RETURN_TRACE(M.x86.saved_cs,M.x86.saved_ip, M.x86.R_CS, M.x86.R_IP, "NEAR"); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc4 +****************************************************************************/ +static void x86emuOp_les_R_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LES\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_ES = fetch_data_word(srcoffset + 2); + } + /* else UNDEFINED! register to register */ + + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc5 +****************************************************************************/ +static void x86emuOp_lds_R_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LDS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_DS = fetch_data_word(srcoffset + 2); + } + /* else UNDEFINED! */ + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc6 +****************************************************************************/ +static void x86emuOp_mov_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 imm; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (rh != 0) { + DECODE_PRINTF("ILLEGAL DECODE OF OPCODE c6\n"); + HALT_SYS(); + } + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%2x\n", imm); + TRACE_AND_STEP(); + store_data_byte(destoffset, imm); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + imm = fetch_byte_imm(); + DECODE_PRINTF2(",%2x\n", imm); + TRACE_AND_STEP(); + *destreg = imm; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc7 +****************************************************************************/ +static void x86emuOp_mov_word_RM_IMM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOV\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (rh != 0) { + DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n"); + HALT_SYS(); + } + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 imm; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + store_data_long(destoffset, imm); + } else { + u16 imm; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + store_data_word(destoffset, imm); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 imm; + + destreg = DECODE_RM_LONG_REGISTER(rl); + imm = fetch_long_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + *destreg = imm; + } else { + u16 *destreg; + u16 imm; + + destreg = DECODE_RM_WORD_REGISTER(rl); + imm = fetch_word_imm(); + DECODE_PRINTF2(",%x\n", imm); + TRACE_AND_STEP(); + *destreg = imm; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc8 +****************************************************************************/ +static void x86emuOp_enter(u8 X86EMU_UNUSED(op1)) +{ + u16 local,frame_pointer; + u8 nesting; + int i; + + START_OF_INSTR(); + local = fetch_word_imm(); + nesting = fetch_byte_imm(); + DECODE_PRINTF2("ENTER %x\n", local); + DECODE_PRINTF2(",%x\n", nesting); + TRACE_AND_STEP(); + push_word(M.x86.R_BP); + frame_pointer = M.x86.R_SP; + if (nesting > 0) { + for (i = 1; i < nesting; i++) { + M.x86.R_BP -= 2; + push_word(fetch_data_word_abs(M.x86.R_SS, M.x86.R_BP)); + } + push_word(frame_pointer); + } + M.x86.R_BP = frame_pointer; + M.x86.R_SP = (u16)(M.x86.R_SP - local); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xc9 +****************************************************************************/ +static void x86emuOp_leave(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("LEAVE\n"); + TRACE_AND_STEP(); + M.x86.R_SP = M.x86.R_BP; + M.x86.R_BP = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xca +****************************************************************************/ +static void x86emuOp_ret_far_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 imm; + + START_OF_INSTR(); + DECODE_PRINTF("RETF\t"); + imm = fetch_word_imm(); + DECODE_PRINTF2("%x\n", imm); + TRACE_AND_STEP(); + M.x86.R_IP = pop_word(); + M.x86.R_CS = pop_word(); + RETURN_TRACE(M.x86.saved_cs,M.x86.saved_ip, M.x86.R_CS, M.x86.R_IP, "FAR"); + M.x86.R_SP += imm; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xcb +****************************************************************************/ +static void x86emuOp_ret_far(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("RETF\n"); + TRACE_AND_STEP(); + M.x86.R_IP = pop_word(); + M.x86.R_CS = pop_word(); + RETURN_TRACE(M.x86.saved_cs,M.x86.saved_ip, M.x86.R_CS, M.x86.R_IP, "FAR"); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xcc +****************************************************************************/ +static void x86emuOp_int3(u8 X86EMU_UNUSED(op1)) +{ + u16 X86EMU_UNUSED(tmp); + + START_OF_INSTR(); + DECODE_PRINTF("INT 3\n"); + tmp = (u16) mem_access_word(3 * 4 + 2); + /* access the segment register */ + TRACE_AND_STEP(); + if (_X86EMU_intrTab[3]) { + (*_X86EMU_intrTab[3])(3); + } else { + push_word((u16)M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(3 * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(3 * 4); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xcd +****************************************************************************/ +static void x86emuOp_int_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 X86EMU_UNUSED(tmp); + u8 intnum; + + START_OF_INSTR(); + DECODE_PRINTF("INT\t"); + intnum = fetch_byte_imm(); + DECODE_PRINTF2("%x\n", intnum); + tmp = mem_access_word(intnum * 4 + 2); + TRACE_AND_STEP(); + if (_X86EMU_intrTab[intnum]) { + (*_X86EMU_intrTab[intnum])(intnum); + } else { + push_word((u16)M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(intnum * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(intnum * 4); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xce +****************************************************************************/ +static void x86emuOp_into(u8 X86EMU_UNUSED(op1)) +{ + u16 X86EMU_UNUSED(tmp); + + START_OF_INSTR(); + DECODE_PRINTF("INTO\n"); + TRACE_AND_STEP(); + if (ACCESS_FLAG(F_OF)) { + tmp = mem_access_word(4 * 4 + 2); + if (_X86EMU_intrTab[4]) { + (*_X86EMU_intrTab[4])(4); + } else { + push_word((u16)M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(4 * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(4 * 4); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xcf +****************************************************************************/ +static void x86emuOp_iret(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("IRET\n"); + + TRACE_AND_STEP(); + + M.x86.R_IP = pop_word(); + M.x86.R_CS = pop_word(); + M.x86.R_FLG = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd0 +****************************************************************************/ +static void x86emuOp_opcD0_byte_RM_1(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 destval; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, 1); + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(",1\n"); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (*destreg, 1); + *destreg = destval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd1 +****************************************************************************/ +static void x86emuOp_opcD1_word_RM_1(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, 1); + store_data_long(destoffset, destval); + } else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",1\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, 1); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(",1\n"); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (*destreg, 1); + *destreg = destval; + } else { + u16 destval; + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(",1\n"); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (*destreg, 1); + *destreg = destval; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd2 +****************************************************************************/ +static void x86emuOp_opcD2_byte_RM_CL(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 destval; + u8 amt; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + amt = M.x86.R_CL; + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (destval, amt); + store_data_byte(destoffset, destval); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = (*opcD0_byte_operation[rh]) (*destreg, amt); + *destreg = destval; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd3 +****************************************************************************/ +static void x86emuOp_opcD3_word_RM_CL(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + u8 amt; + + /* + * Yet another weirdo special case instruction format. Part of + * the opcode held below in "RH". Doubly nested case would + * result, except that the decoded instruction + */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + switch (rh) { + case 0: + DECODE_PRINTF("ROL\t"); + break; + case 1: + DECODE_PRINTF("ROR\t"); + break; + case 2: + DECODE_PRINTF("RCL\t"); + break; + case 3: + DECODE_PRINTF("RCR\t"); + break; + case 4: + DECODE_PRINTF("SHL\t"); + break; + case 5: + DECODE_PRINTF("SHR\t"); + break; + case 6: + DECODE_PRINTF("SAL\t"); + break; + case 7: + DECODE_PRINTF("SAR\t"); + break; + } + } +#endif + /* know operation, decode the mod byte to find the addressing + mode. */ + amt = M.x86.R_CL; + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_long_operation[rh]) (destval, amt); + store_data_long(destoffset, destval); + } else { + u16 destval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(",CL\n"); + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = (*opcD1_word_operation[rh]) (destval, amt); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = (*opcD1_long_operation[rh]) (*destreg, amt); + } else { + u16 *destreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = (*opcD1_word_operation[rh]) (*destreg, amt); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd4 +****************************************************************************/ +static void x86emuOp_aam(u8 X86EMU_UNUSED(op1)) +{ + u8 a; + + START_OF_INSTR(); + DECODE_PRINTF("AAM\n"); + a = fetch_byte_imm(); /* this is a stupid encoding. */ + if (a != 10) { + DECODE_PRINTF("ERROR DECODING AAM\n"); + TRACE_REGS(); + HALT_SYS(); + } + TRACE_AND_STEP(); + /* note the type change here --- returning AL and AH in AX. */ + M.x86.R_AX = aam_word(M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xd5 +****************************************************************************/ +static void x86emuOp_aad(u8 X86EMU_UNUSED(op1)) +{ + u8 X86EMU_UNUSED(a); + + START_OF_INSTR(); + DECODE_PRINTF("AAD\n"); + a = fetch_byte_imm(); + TRACE_AND_STEP(); + M.x86.R_AX = aad_word(M.x86.R_AX); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/* opcode 0xd6 ILLEGAL OPCODE */ + +/**************************************************************************** +REMARKS: +Handles opcode 0xd7 +****************************************************************************/ +static void x86emuOp_xlat(u8 X86EMU_UNUSED(op1)) +{ + u16 addr; + + START_OF_INSTR(); + DECODE_PRINTF("XLAT\n"); + TRACE_AND_STEP(); + addr = (u16)(M.x86.R_BX + (u8)M.x86.R_AL); + M.x86.R_AL = fetch_data_byte(addr); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/* instuctions D8 .. DF are in i87_ops.c */ + +/**************************************************************************** +REMARKS: +Handles opcode 0xe0 +****************************************************************************/ +static void x86emuOp_loopne(u8 X86EMU_UNUSED(op1)) +{ + s16 ip; + + START_OF_INSTR(); + DECODE_PRINTF("LOOPNE\t"); + ip = (s8) fetch_byte_imm(); + ip += (s16) M.x86.R_IP; + DECODE_PRINTF2("%04x\n", ip); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_ADDR) + M.x86.R_ECX -= 1; + else + M.x86.R_CX -= 1; + if (((M.x86.mode & SYSMODE_PREFIX_ADDR) ? M.x86.R_ECX : M.x86.R_CX) != 0 && !ACCESS_FLAG(F_ZF)) /* (E)CX != 0 and !ZF */ + M.x86.R_IP = ip; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe1 +****************************************************************************/ +static void x86emuOp_loope(u8 X86EMU_UNUSED(op1)) +{ + s16 ip; + + START_OF_INSTR(); + DECODE_PRINTF("LOOPE\t"); + ip = (s8) fetch_byte_imm(); + ip += (s16) M.x86.R_IP; + DECODE_PRINTF2("%04x\n", ip); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_ADDR) + M.x86.R_ECX -= 1; + else + M.x86.R_CX -= 1; + if (((M.x86.mode & SYSMODE_PREFIX_ADDR) ? M.x86.R_ECX : M.x86.R_CX) != 0 && ACCESS_FLAG(F_ZF)) /* (E)CX != 0 and ZF */ + M.x86.R_IP = ip; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe2 +****************************************************************************/ +static void x86emuOp_loop(u8 X86EMU_UNUSED(op1)) +{ + s16 ip; + + START_OF_INSTR(); + DECODE_PRINTF("LOOP\t"); + ip = (s8) fetch_byte_imm(); + ip += (s16) M.x86.R_IP; + DECODE_PRINTF2("%04x\n", ip); + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_ADDR) + M.x86.R_ECX -= 1; + else + M.x86.R_CX -= 1; + if (((M.x86.mode & SYSMODE_PREFIX_ADDR) ? M.x86.R_ECX : M.x86.R_CX) != 0) /* (E)CX != 0 */ + M.x86.R_IP = ip; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe3 +****************************************************************************/ +static void x86emuOp_jcxz(u8 X86EMU_UNUSED(op1)) +{ + u16 target; + s8 offset; + + /* jump to byte offset if overflow flag is set */ + START_OF_INSTR(); + DECODE_PRINTF("JCXZ\t"); + offset = (s8)fetch_byte_imm(); + target = (u16)(M.x86.R_IP + offset); + DECODE_PRINTF2("%x\n", target); + TRACE_AND_STEP(); + if (M.x86.R_CX == 0) { + M.x86.R_IP = target; + JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, M.x86.R_IP, " CXZ "); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe4 +****************************************************************************/ +static void x86emuOp_in_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 port; + + START_OF_INSTR(); + DECODE_PRINTF("IN\t"); + port = (u8) fetch_byte_imm(); + DECODE_PRINTF2("%x,AL\n", port); + TRACE_AND_STEP(); + M.x86.R_AL = (*sys_inb)(port); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe5 +****************************************************************************/ +static void x86emuOp_in_word_AX_IMM(u8 X86EMU_UNUSED(op1)) +{ + u8 port; + + START_OF_INSTR(); + DECODE_PRINTF("IN\t"); + port = (u8) fetch_byte_imm(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF2("EAX,%x\n", port); + } else { + DECODE_PRINTF2("AX,%x\n", port); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = (*sys_inl)(port); + } else { + M.x86.R_AX = (*sys_inw)(port); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe6 +****************************************************************************/ +static void x86emuOp_out_byte_IMM_AL(u8 X86EMU_UNUSED(op1)) +{ + u8 port; + + START_OF_INSTR(); + DECODE_PRINTF("OUT\t"); + port = (u8) fetch_byte_imm(); + DECODE_PRINTF2("%x,AL\n", port); + TRACE_AND_STEP(); + (*sys_outb)(port, M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe7 +****************************************************************************/ +static void x86emuOp_out_word_IMM_AX(u8 X86EMU_UNUSED(op1)) +{ + u8 port; + + START_OF_INSTR(); + DECODE_PRINTF("OUT\t"); + port = (u8) fetch_byte_imm(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF2("%x,EAX\n", port); + } else { + DECODE_PRINTF2("%x,AX\n", port); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + (*sys_outl)(port, M.x86.R_EAX); + } else { + (*sys_outw)(port, M.x86.R_AX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe8 +****************************************************************************/ +static void x86emuOp_call_near_IMM(u8 X86EMU_UNUSED(op1)) +{ + s16 ip16 = 0; /* Initialize to keep GCC silent */ + s32 ip32 = 0; + + START_OF_INSTR(); + DECODE_PRINTF("CALL\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + ip32 = (s32) fetch_long_imm(); + ip32 += (s16) M.x86.R_IP; /* CHECK SIGN */ + DECODE_PRINTF2("%04x\n", (u16)ip32); + CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip32, ""); + } else { + ip16 = (s16) fetch_word_imm(); + ip16 += (s16) M.x86.R_IP; /* CHECK SIGN */ + DECODE_PRINTF2("%04x\n", ip16); + CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip16, ""); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + push_long(M.x86.R_EIP); + M.x86.R_EIP = ip32 & 0xffff; + } else { + push_word(M.x86.R_IP); + M.x86.R_EIP = ip16; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xe9 +****************************************************************************/ +static void x86emuOp_jump_near_IMM(u8 X86EMU_UNUSED(op1)) +{ + u32 ip; + + START_OF_INSTR(); + DECODE_PRINTF("JMP\t"); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + ip = (u32)fetch_long_imm(); + ip += (u32)M.x86.R_EIP; + DECODE_PRINTF2("%08x\n", (u32)ip); + JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip, " NEAR "); + TRACE_AND_STEP(); + M.x86.R_EIP = (u32)ip; + } else { + ip = (s16)fetch_word_imm(); + ip += (s16)M.x86.R_IP; + DECODE_PRINTF2("%04x\n", (u16)ip); + JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip, " NEAR "); + TRACE_AND_STEP(); + M.x86.R_IP = (u16)ip; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xea +****************************************************************************/ +static void x86emuOp_jump_far_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 cs; + u32 ip; + + START_OF_INSTR(); + DECODE_PRINTF("JMP\tFAR "); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + ip = fetch_long_imm(); + } else { + ip = fetch_word_imm(); + } + cs = fetch_word_imm(); + DECODE_PRINTF2("%04x:", cs); + DECODE_PRINTF2("%04x\n", ip); + JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, cs, ip, " FAR "); + TRACE_AND_STEP(); + M.x86.R_EIP = ip & 0xffff; + M.x86.R_CS = cs; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xeb +****************************************************************************/ +static void x86emuOp_jump_byte_IMM(u8 X86EMU_UNUSED(op1)) +{ + u16 target; + s8 offset; + + START_OF_INSTR(); + DECODE_PRINTF("JMP\t"); + offset = (s8)fetch_byte_imm(); + target = (u16)(M.x86.R_IP + offset); + DECODE_PRINTF2("%x\n", target); + JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, target, " BYTE "); + TRACE_AND_STEP(); + M.x86.R_IP = target; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xec +****************************************************************************/ +static void x86emuOp_in_byte_AL_DX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("IN\tAL,DX\n"); + TRACE_AND_STEP(); + M.x86.R_AL = (*sys_inb)(M.x86.R_DX); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xed +****************************************************************************/ +static void x86emuOp_in_word_AX_DX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("IN\tEAX,DX\n"); + } else { + DECODE_PRINTF("IN\tAX,DX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + M.x86.R_EAX = (*sys_inl)(M.x86.R_DX); + } else { + M.x86.R_AX = (*sys_inw)(M.x86.R_DX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xee +****************************************************************************/ +static void x86emuOp_out_byte_DX_AL(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("OUT\tDX,AL\n"); + TRACE_AND_STEP(); + (*sys_outb)(M.x86.R_DX, M.x86.R_AL); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xef +****************************************************************************/ +static void x86emuOp_out_word_DX_AX(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("OUT\tDX,EAX\n"); + } else { + DECODE_PRINTF("OUT\tDX,AX\n"); + } + TRACE_AND_STEP(); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + (*sys_outl)(M.x86.R_DX, M.x86.R_EAX); + } else { + (*sys_outw)(M.x86.R_DX, M.x86.R_AX); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf0 +****************************************************************************/ +static void x86emuOp_lock(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("LOCK:\n"); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/*opcode 0xf1 ILLEGAL OPERATION */ + +/**************************************************************************** +REMARKS: +Handles opcode 0xf2 +****************************************************************************/ +static void x86emuOp_repne(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("REPNE\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_PREFIX_REPNE; + if (M.x86.mode & SYSMODE_PREFIX_ADDR) + M.x86.mode |= SYSMODE_32BIT_REP; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf3 +****************************************************************************/ +static void x86emuOp_repe(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("REPE\n"); + TRACE_AND_STEP(); + M.x86.mode |= SYSMODE_PREFIX_REPE; + if (M.x86.mode & SYSMODE_PREFIX_ADDR) + M.x86.mode |= SYSMODE_32BIT_REP; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf4 +****************************************************************************/ +static void x86emuOp_halt(u8 X86EMU_UNUSED(op1)) +{ + START_OF_INSTR(); + DECODE_PRINTF("HALT\n"); + TRACE_AND_STEP(); + HALT_SYS(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf5 +****************************************************************************/ +static void x86emuOp_cmc(u8 X86EMU_UNUSED(op1)) +{ + /* complement the carry flag. */ + START_OF_INSTR(); + DECODE_PRINTF("CMC\n"); + TRACE_AND_STEP(); + TOGGLE_FLAG(F_CF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf6 +****************************************************************************/ +static void x86emuOp_opcF6_byte_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + u8 *destreg; + uint destoffset; + u8 destval, srcval; + + /* long, drawn out code follows. Double switch for a total + of 32 cases. */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + DECODE_PRINTF(opF6_names[rh]); + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + destval = fetch_data_byte(destoffset); + + switch (rh) { + case 0: /* test byte imm */ + DECODE_PRINTF(","); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%02x\n", srcval); + TRACE_AND_STEP(); + test_byte(destval, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = not_byte(destval); + store_data_byte(destoffset, destval); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = neg_byte(destval); + store_data_byte(destoffset, destval); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_byte(destval); + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_byte(destval); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_byte(destval); + break; + default: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_byte(destval); + break; + } + } else { /* mod=11 */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + switch (rh) { + case 0: /* test byte imm */ + DECODE_PRINTF(","); + srcval = fetch_byte_imm(); + DECODE_PRINTF2("%02x\n", srcval); + TRACE_AND_STEP(); + test_byte(*destreg, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = not_byte(*destreg); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = neg_byte(*destreg); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_byte(*destreg); /*!!! */ + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_byte(*destreg); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_byte(*destreg); + break; + default: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_byte(*destreg); + break; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf7 +****************************************************************************/ +static void x86emuOp_opcF7_word_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + DECODE_PRINTF(opF6_names[rh]); + if (mod < 3) { + + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval, srcval; + + DECODE_PRINTF("DWORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + destval = fetch_data_long(destoffset); + + switch (rh) { + case 0: + DECODE_PRINTF(","); + srcval = fetch_long_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + test_long(destval, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = not_long(destval); + store_data_long(destoffset, destval); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = neg_long(destval); + store_data_long(destoffset, destval); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_long(destval); + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_long(destval); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_long(destval); + break; + case 7: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_long(destval); + break; + } + } else { + u16 destval, srcval; + + DECODE_PRINTF("WORD PTR "); + destoffset = decode_rmXX_address(mod, rl); + destval = fetch_data_word(destoffset); + + switch (rh) { + case 0: /* test word imm */ + DECODE_PRINTF(","); + srcval = fetch_word_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + test_word(destval, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = not_word(destval); + store_data_word(destoffset, destval); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + destval = neg_word(destval); + store_data_word(destoffset, destval); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_word(destval); + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_word(destval); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_word(destval); + break; + case 7: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_word(destval); + break; + } + } + + } else { /* mod=11 */ + + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rl); + + switch (rh) { + case 0: /* test word imm */ + DECODE_PRINTF(","); + srcval = fetch_long_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + test_long(*destreg, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = not_long(*destreg); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = neg_long(*destreg); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_long(*destreg); /*!!! */ + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_long(*destreg); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_long(*destreg); + break; + case 7: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_long(*destreg); + break; + } + } else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rl); + + switch (rh) { + case 0: /* test word imm */ + DECODE_PRINTF(","); + srcval = fetch_word_imm(); + DECODE_PRINTF2("%x\n", srcval); + TRACE_AND_STEP(); + test_word(*destreg, srcval); + break; + case 1: + DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); + HALT_SYS(); + break; + case 2: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = not_word(*destreg); + break; + case 3: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = neg_word(*destreg); + break; + case 4: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + mul_word(*destreg); /*!!! */ + break; + case 5: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + imul_word(*destreg); + break; + case 6: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + div_word(*destreg); + break; + case 7: + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + idiv_word(*destreg); + break; + } + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf8 +****************************************************************************/ +static void x86emuOp_clc(u8 X86EMU_UNUSED(op1)) +{ + /* clear the carry flag. */ + START_OF_INSTR(); + DECODE_PRINTF("CLC\n"); + TRACE_AND_STEP(); + CLEAR_FLAG(F_CF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xf9 +****************************************************************************/ +static void x86emuOp_stc(u8 X86EMU_UNUSED(op1)) +{ + /* set the carry flag. */ + START_OF_INSTR(); + DECODE_PRINTF("STC\n"); + TRACE_AND_STEP(); + SET_FLAG(F_CF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfa +****************************************************************************/ +static void x86emuOp_cli(u8 X86EMU_UNUSED(op1)) +{ + /* clear interrupts. */ + START_OF_INSTR(); + DECODE_PRINTF("CLI\n"); + TRACE_AND_STEP(); + CLEAR_FLAG(F_IF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfb +****************************************************************************/ +static void x86emuOp_sti(u8 X86EMU_UNUSED(op1)) +{ + /* enable interrupts. */ + START_OF_INSTR(); + DECODE_PRINTF("STI\n"); + TRACE_AND_STEP(); + SET_FLAG(F_IF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfc +****************************************************************************/ +static void x86emuOp_cld(u8 X86EMU_UNUSED(op1)) +{ + /* clear interrupts. */ + START_OF_INSTR(); + DECODE_PRINTF("CLD\n"); + TRACE_AND_STEP(); + CLEAR_FLAG(F_DF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfd +****************************************************************************/ +static void x86emuOp_std(u8 X86EMU_UNUSED(op1)) +{ + /* clear interrupts. */ + START_OF_INSTR(); + DECODE_PRINTF("STD\n"); + TRACE_AND_STEP(); + SET_FLAG(F_DF); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xfe +****************************************************************************/ +static void x86emuOp_opcFE_byte_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rh, rl; + u8 destval; + uint destoffset; + u8 *destreg; + + /* Yet another special case instruction. */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + DECODE_PRINTF("INC\t"); + break; + case 1: + DECODE_PRINTF("DEC\t"); + break; + case 2: + case 3: + case 4: + case 5: + case 6: + case 7: + DECODE_PRINTF2("ILLEGAL OP MAJOR OP 0xFE MINOR OP %x \n", mod); + HALT_SYS(); + break; + } + } +#endif + if (mod < 3) { + DECODE_PRINTF("BYTE PTR "); + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + destval = fetch_data_byte(destoffset); + TRACE_AND_STEP(); + if (rh == 0) + destval = inc_byte(destval); + else + destval = dec_byte(destval); + store_data_byte(destoffset, destval); + } else { + destreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + if (rh == 0) + *destreg = inc_byte(*destreg); + else + *destreg = dec_byte(*destreg); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0xff +****************************************************************************/ +static void x86emuOp_opcFF_word_RM(u8 X86EMU_UNUSED(op1)) +{ + int mod, rh, rl; + uint destoffset = 0; + u16 *destreg; + u32 *destreg32; + u16 destval,destval2; + u32 destval32; + + /* Yet another special case instruction. */ + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); +#ifdef DEBUG + if (DEBUG_DECODE()) { + /* XXX DECODE_PRINTF may be changed to something more + general, so that it is important to leave the strings + in the same format, even though the result is that the + above test is done twice. */ + + switch (rh) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("INC\tDWORD PTR "); + } else { + DECODE_PRINTF("INC\tWORD PTR "); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + DECODE_PRINTF("DEC\tDWORD PTR "); + } else { + DECODE_PRINTF("DEC\tWORD PTR "); + } + break; + case 2: + DECODE_PRINTF("CALL\t "); + break; + case 3: + DECODE_PRINTF("CALL\tFAR "); + break; + case 4: + DECODE_PRINTF("JMP\t"); + break; + case 5: + DECODE_PRINTF("JMP\tFAR "); + break; + case 6: + DECODE_PRINTF("PUSH\t"); + break; + case 7: + DECODE_PRINTF("ILLEGAL DECODING OF OPCODE FF\t"); + HALT_SYS(); + break; + } + } +#endif + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + switch (rh) { + case 0: /* inc word ptr ... */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + destval32 = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval32 = inc_long(destval32); + store_data_long(destoffset, destval32); + } else { + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = inc_word(destval); + store_data_word(destoffset, destval); + } + break; + case 1: /* dec word ptr ... */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + destval32 = fetch_data_long(destoffset); + TRACE_AND_STEP(); + destval32 = dec_long(destval32); + store_data_long(destoffset, destval32); + } else { + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + destval = dec_word(destval); + store_data_word(destoffset, destval); + } + break; + case 2: /* call word ptr ... */ + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + push_word(M.x86.R_IP); + M.x86.R_IP = destval; + break; + case 3: /* call far ptr ... */ + destval = fetch_data_word(destoffset); + destval2 = fetch_data_word(destoffset + 2); + TRACE_AND_STEP(); + push_word(M.x86.R_CS); + M.x86.R_CS = destval2; + push_word(M.x86.R_IP); + M.x86.R_IP = destval; + break; + case 4: /* jmp word ptr ... */ + destval = fetch_data_word(destoffset); + JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, destval, " WORD "); + TRACE_AND_STEP(); + M.x86.R_IP = destval; + break; + case 5: /* jmp far ptr ... */ + destval = fetch_data_word(destoffset); + destval2 = fetch_data_word(destoffset + 2); + JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, destval2, destval, " FAR "); + TRACE_AND_STEP(); + M.x86.R_IP = destval; + M.x86.R_CS = destval2; + break; + case 6: /* push word ptr ... */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + destval32 = fetch_data_long(destoffset); + TRACE_AND_STEP(); + push_long(destval32); + } else { + destval = fetch_data_word(destoffset); + TRACE_AND_STEP(); + push_word(destval); + } + break; + } + } else { + switch (rh) { + case 0: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + destreg32 = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg32 = inc_long(*destreg32); + } else { + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = inc_word(*destreg); + } + break; + case 1: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + destreg32 = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg32 = dec_long(*destreg32); + } else { + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = dec_word(*destreg); + } + break; + case 2: /* call word ptr ... */ + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_IP); + M.x86.R_IP = *destreg; + break; + case 3: /* jmp far ptr ... */ + DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n"); + TRACE_AND_STEP(); + HALT_SYS(); + break; + + case 4: /* jmp ... */ + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + M.x86.R_IP = (u16) (*destreg); + break; + case 5: /* jmp far ptr ... */ + DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n"); + TRACE_AND_STEP(); + HALT_SYS(); + break; + case 6: + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + destreg32 = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_long(*destreg32); + } else { + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + push_word(*destreg); + } + break; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/*************************************************************************** + * Single byte operation code table: + **************************************************************************/ +void (*x86emu_optab[256])(u8) = +{ +/* 0x00 */ x86emuOp_genop_byte_RM_R, +/* 0x01 */ x86emuOp_genop_word_RM_R, +/* 0x02 */ x86emuOp_genop_byte_R_RM, +/* 0x03 */ x86emuOp_genop_word_R_RM, +/* 0x04 */ x86emuOp_genop_byte_AL_IMM, +/* 0x05 */ x86emuOp_genop_word_AX_IMM, +/* 0x06 */ x86emuOp_push_ES, +/* 0x07 */ x86emuOp_pop_ES, + +/* 0x08 */ x86emuOp_genop_byte_RM_R, +/* 0x09 */ x86emuOp_genop_word_RM_R, +/* 0x0a */ x86emuOp_genop_byte_R_RM, +/* 0x0b */ x86emuOp_genop_word_R_RM, +/* 0x0c */ x86emuOp_genop_byte_AL_IMM, +/* 0x0d */ x86emuOp_genop_word_AX_IMM, +/* 0x0e */ x86emuOp_push_CS, +/* 0x0f */ x86emuOp_two_byte, + +/* 0x10 */ x86emuOp_genop_byte_RM_R, +/* 0x11 */ x86emuOp_genop_word_RM_R, +/* 0x12 */ x86emuOp_genop_byte_R_RM, +/* 0x13 */ x86emuOp_genop_word_R_RM, +/* 0x14 */ x86emuOp_genop_byte_AL_IMM, +/* 0x15 */ x86emuOp_genop_word_AX_IMM, +/* 0x16 */ x86emuOp_push_SS, +/* 0x17 */ x86emuOp_pop_SS, + +/* 0x18 */ x86emuOp_genop_byte_RM_R, +/* 0x19 */ x86emuOp_genop_word_RM_R, +/* 0x1a */ x86emuOp_genop_byte_R_RM, +/* 0x1b */ x86emuOp_genop_word_R_RM, +/* 0x1c */ x86emuOp_genop_byte_AL_IMM, +/* 0x1d */ x86emuOp_genop_word_AX_IMM, +/* 0x1e */ x86emuOp_push_DS, +/* 0x1f */ x86emuOp_pop_DS, + +/* 0x20 */ x86emuOp_genop_byte_RM_R, +/* 0x21 */ x86emuOp_genop_word_RM_R, +/* 0x22 */ x86emuOp_genop_byte_R_RM, +/* 0x23 */ x86emuOp_genop_word_R_RM, +/* 0x24 */ x86emuOp_genop_byte_AL_IMM, +/* 0x25 */ x86emuOp_genop_word_AX_IMM, +/* 0x26 */ x86emuOp_segovr_ES, +/* 0x27 */ x86emuOp_daa, + +/* 0x28 */ x86emuOp_genop_byte_RM_R, +/* 0x29 */ x86emuOp_genop_word_RM_R, +/* 0x2a */ x86emuOp_genop_byte_R_RM, +/* 0x2b */ x86emuOp_genop_word_R_RM, +/* 0x2c */ x86emuOp_genop_byte_AL_IMM, +/* 0x2d */ x86emuOp_genop_word_AX_IMM, +/* 0x2e */ x86emuOp_segovr_CS, +/* 0x2f */ x86emuOp_das, + +/* 0x30 */ x86emuOp_genop_byte_RM_R, +/* 0x31 */ x86emuOp_genop_word_RM_R, +/* 0x32 */ x86emuOp_genop_byte_R_RM, +/* 0x33 */ x86emuOp_genop_word_R_RM, +/* 0x34 */ x86emuOp_genop_byte_AL_IMM, +/* 0x35 */ x86emuOp_genop_word_AX_IMM, +/* 0x36 */ x86emuOp_segovr_SS, +/* 0x37 */ x86emuOp_aaa, + +/* 0x38 */ x86emuOp_genop_byte_RM_R, +/* 0x39 */ x86emuOp_genop_word_RM_R, +/* 0x3a */ x86emuOp_genop_byte_R_RM, +/* 0x3b */ x86emuOp_genop_word_R_RM, +/* 0x3c */ x86emuOp_genop_byte_AL_IMM, +/* 0x3d */ x86emuOp_genop_word_AX_IMM, +/* 0x3e */ x86emuOp_segovr_DS, +/* 0x3f */ x86emuOp_aas, + +/* 0x40 */ x86emuOp_inc_register, +/* 0x41 */ x86emuOp_inc_register, +/* 0x42 */ x86emuOp_inc_register, +/* 0x43 */ x86emuOp_inc_register, +/* 0x44 */ x86emuOp_inc_register, +/* 0x45 */ x86emuOp_inc_register, +/* 0x46 */ x86emuOp_inc_register, +/* 0x47 */ x86emuOp_inc_register, + +/* 0x48 */ x86emuOp_dec_register, +/* 0x49 */ x86emuOp_dec_register, +/* 0x4a */ x86emuOp_dec_register, +/* 0x4b */ x86emuOp_dec_register, +/* 0x4c */ x86emuOp_dec_register, +/* 0x4d */ x86emuOp_dec_register, +/* 0x4e */ x86emuOp_dec_register, +/* 0x4f */ x86emuOp_dec_register, + +/* 0x50 */ x86emuOp_push_register, +/* 0x51 */ x86emuOp_push_register, +/* 0x52 */ x86emuOp_push_register, +/* 0x53 */ x86emuOp_push_register, +/* 0x54 */ x86emuOp_push_register, +/* 0x55 */ x86emuOp_push_register, +/* 0x56 */ x86emuOp_push_register, +/* 0x57 */ x86emuOp_push_register, + +/* 0x58 */ x86emuOp_pop_register, +/* 0x59 */ x86emuOp_pop_register, +/* 0x5a */ x86emuOp_pop_register, +/* 0x5b */ x86emuOp_pop_register, +/* 0x5c */ x86emuOp_pop_register, +/* 0x5d */ x86emuOp_pop_register, +/* 0x5e */ x86emuOp_pop_register, +/* 0x5f */ x86emuOp_pop_register, + +/* 0x60 */ x86emuOp_push_all, +/* 0x61 */ x86emuOp_pop_all, +/* 0x62 */ x86emuOp_illegal_op, /* bound */ +/* 0x63 */ x86emuOp_illegal_op, /* arpl */ +/* 0x64 */ x86emuOp_segovr_FS, +/* 0x65 */ x86emuOp_segovr_GS, +/* 0x66 */ x86emuOp_prefix_data, +/* 0x67 */ x86emuOp_prefix_addr, + +/* 0x68 */ x86emuOp_push_word_IMM, +/* 0x69 */ x86emuOp_imul_word_IMM, +/* 0x6a */ x86emuOp_push_byte_IMM, +/* 0x6b */ x86emuOp_imul_byte_IMM, +/* 0x6c */ x86emuOp_ins_byte, +/* 0x6d */ x86emuOp_ins_word, +/* 0x6e */ x86emuOp_outs_byte, +/* 0x6f */ x86emuOp_outs_word, + +/* 0x70 */ x86emuOp_jump_near_cond, +/* 0x71 */ x86emuOp_jump_near_cond, +/* 0x72 */ x86emuOp_jump_near_cond, +/* 0x73 */ x86emuOp_jump_near_cond, +/* 0x74 */ x86emuOp_jump_near_cond, +/* 0x75 */ x86emuOp_jump_near_cond, +/* 0x76 */ x86emuOp_jump_near_cond, +/* 0x77 */ x86emuOp_jump_near_cond, + +/* 0x78 */ x86emuOp_jump_near_cond, +/* 0x79 */ x86emuOp_jump_near_cond, +/* 0x7a */ x86emuOp_jump_near_cond, +/* 0x7b */ x86emuOp_jump_near_cond, +/* 0x7c */ x86emuOp_jump_near_cond, +/* 0x7d */ x86emuOp_jump_near_cond, +/* 0x7e */ x86emuOp_jump_near_cond, +/* 0x7f */ x86emuOp_jump_near_cond, + +/* 0x80 */ x86emuOp_opc80_byte_RM_IMM, +/* 0x81 */ x86emuOp_opc81_word_RM_IMM, +/* 0x82 */ x86emuOp_opc82_byte_RM_IMM, +/* 0x83 */ x86emuOp_opc83_word_RM_IMM, +/* 0x84 */ x86emuOp_test_byte_RM_R, +/* 0x85 */ x86emuOp_test_word_RM_R, +/* 0x86 */ x86emuOp_xchg_byte_RM_R, +/* 0x87 */ x86emuOp_xchg_word_RM_R, + +/* 0x88 */ x86emuOp_mov_byte_RM_R, +/* 0x89 */ x86emuOp_mov_word_RM_R, +/* 0x8a */ x86emuOp_mov_byte_R_RM, +/* 0x8b */ x86emuOp_mov_word_R_RM, +/* 0x8c */ x86emuOp_mov_word_RM_SR, +/* 0x8d */ x86emuOp_lea_word_R_M, +/* 0x8e */ x86emuOp_mov_word_SR_RM, +/* 0x8f */ x86emuOp_pop_RM, + +/* 0x90 */ x86emuOp_nop, +/* 0x91 */ x86emuOp_xchg_word_AX_register, +/* 0x92 */ x86emuOp_xchg_word_AX_register, +/* 0x93 */ x86emuOp_xchg_word_AX_register, +/* 0x94 */ x86emuOp_xchg_word_AX_register, +/* 0x95 */ x86emuOp_xchg_word_AX_register, +/* 0x96 */ x86emuOp_xchg_word_AX_register, +/* 0x97 */ x86emuOp_xchg_word_AX_register, + +/* 0x98 */ x86emuOp_cbw, +/* 0x99 */ x86emuOp_cwd, +/* 0x9a */ x86emuOp_call_far_IMM, +/* 0x9b */ x86emuOp_wait, +/* 0x9c */ x86emuOp_pushf_word, +/* 0x9d */ x86emuOp_popf_word, +/* 0x9e */ x86emuOp_sahf, +/* 0x9f */ x86emuOp_lahf, + +/* 0xa0 */ x86emuOp_mov_AL_M_IMM, +/* 0xa1 */ x86emuOp_mov_AX_M_IMM, +/* 0xa2 */ x86emuOp_mov_M_AL_IMM, +/* 0xa3 */ x86emuOp_mov_M_AX_IMM, +/* 0xa4 */ x86emuOp_movs_byte, +/* 0xa5 */ x86emuOp_movs_word, +/* 0xa6 */ x86emuOp_cmps_byte, +/* 0xa7 */ x86emuOp_cmps_word, +/* 0xa8 */ x86emuOp_test_AL_IMM, +/* 0xa9 */ x86emuOp_test_AX_IMM, +/* 0xaa */ x86emuOp_stos_byte, +/* 0xab */ x86emuOp_stos_word, +/* 0xac */ x86emuOp_lods_byte, +/* 0xad */ x86emuOp_lods_word, +/* 0xac */ x86emuOp_scas_byte, +/* 0xad */ x86emuOp_scas_word, + +/* 0xb0 */ x86emuOp_mov_byte_register_IMM, +/* 0xb1 */ x86emuOp_mov_byte_register_IMM, +/* 0xb2 */ x86emuOp_mov_byte_register_IMM, +/* 0xb3 */ x86emuOp_mov_byte_register_IMM, +/* 0xb4 */ x86emuOp_mov_byte_register_IMM, +/* 0xb5 */ x86emuOp_mov_byte_register_IMM, +/* 0xb6 */ x86emuOp_mov_byte_register_IMM, +/* 0xb7 */ x86emuOp_mov_byte_register_IMM, + +/* 0xb8 */ x86emuOp_mov_word_register_IMM, +/* 0xb9 */ x86emuOp_mov_word_register_IMM, +/* 0xba */ x86emuOp_mov_word_register_IMM, +/* 0xbb */ x86emuOp_mov_word_register_IMM, +/* 0xbc */ x86emuOp_mov_word_register_IMM, +/* 0xbd */ x86emuOp_mov_word_register_IMM, +/* 0xbe */ x86emuOp_mov_word_register_IMM, +/* 0xbf */ x86emuOp_mov_word_register_IMM, + +/* 0xc0 */ x86emuOp_opcC0_byte_RM_MEM, +/* 0xc1 */ x86emuOp_opcC1_word_RM_MEM, +/* 0xc2 */ x86emuOp_ret_near_IMM, +/* 0xc3 */ x86emuOp_ret_near, +/* 0xc4 */ x86emuOp_les_R_IMM, +/* 0xc5 */ x86emuOp_lds_R_IMM, +/* 0xc6 */ x86emuOp_mov_byte_RM_IMM, +/* 0xc7 */ x86emuOp_mov_word_RM_IMM, +/* 0xc8 */ x86emuOp_enter, +/* 0xc9 */ x86emuOp_leave, +/* 0xca */ x86emuOp_ret_far_IMM, +/* 0xcb */ x86emuOp_ret_far, +/* 0xcc */ x86emuOp_int3, +/* 0xcd */ x86emuOp_int_IMM, +/* 0xce */ x86emuOp_into, +/* 0xcf */ x86emuOp_iret, + +/* 0xd0 */ x86emuOp_opcD0_byte_RM_1, +/* 0xd1 */ x86emuOp_opcD1_word_RM_1, +/* 0xd2 */ x86emuOp_opcD2_byte_RM_CL, +/* 0xd3 */ x86emuOp_opcD3_word_RM_CL, +/* 0xd4 */ x86emuOp_aam, +/* 0xd5 */ x86emuOp_aad, +/* 0xd6 */ x86emuOp_illegal_op, /* Undocumented SETALC instruction */ +/* 0xd7 */ x86emuOp_xlat, +/* 0xd8 */ x86emuOp_esc_coprocess_d8, +/* 0xd9 */ x86emuOp_esc_coprocess_d9, +/* 0xda */ x86emuOp_esc_coprocess_da, +/* 0xdb */ x86emuOp_esc_coprocess_db, +/* 0xdc */ x86emuOp_esc_coprocess_dc, +/* 0xdd */ x86emuOp_esc_coprocess_dd, +/* 0xde */ x86emuOp_esc_coprocess_de, +/* 0xdf */ x86emuOp_esc_coprocess_df, + +/* 0xe0 */ x86emuOp_loopne, +/* 0xe1 */ x86emuOp_loope, +/* 0xe2 */ x86emuOp_loop, +/* 0xe3 */ x86emuOp_jcxz, +/* 0xe4 */ x86emuOp_in_byte_AL_IMM, +/* 0xe5 */ x86emuOp_in_word_AX_IMM, +/* 0xe6 */ x86emuOp_out_byte_IMM_AL, +/* 0xe7 */ x86emuOp_out_word_IMM_AX, + +/* 0xe8 */ x86emuOp_call_near_IMM, +/* 0xe9 */ x86emuOp_jump_near_IMM, +/* 0xea */ x86emuOp_jump_far_IMM, +/* 0xeb */ x86emuOp_jump_byte_IMM, +/* 0xec */ x86emuOp_in_byte_AL_DX, +/* 0xed */ x86emuOp_in_word_AX_DX, +/* 0xee */ x86emuOp_out_byte_DX_AL, +/* 0xef */ x86emuOp_out_word_DX_AX, + +/* 0xf0 */ x86emuOp_lock, +/* 0xf1 */ x86emuOp_illegal_op, +/* 0xf2 */ x86emuOp_repne, +/* 0xf3 */ x86emuOp_repe, +/* 0xf4 */ x86emuOp_halt, +/* 0xf5 */ x86emuOp_cmc, +/* 0xf6 */ x86emuOp_opcF6_byte_RM, +/* 0xf7 */ x86emuOp_opcF7_word_RM, + +/* 0xf8 */ x86emuOp_clc, +/* 0xf9 */ x86emuOp_stc, +/* 0xfa */ x86emuOp_cli, +/* 0xfb */ x86emuOp_sti, +/* 0xfc */ x86emuOp_cld, +/* 0xfd */ x86emuOp_std, +/* 0xfe */ x86emuOp_opcFE_byte_RM, +/* 0xff */ x86emuOp_opcFF_word_RM, +}; diff --git a/src/device/oprom/x86emu/ops.h b/src/device/oprom/x86emu/ops.h new file mode 100644 index 0000000000..825b9eadd1 --- /dev/null +++ b/src/device/oprom/x86emu/ops.h @@ -0,0 +1,47 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for operand decoding functions. +* +****************************************************************************/ + +#ifndef __X86EMU_OPS_H +#define __X86EMU_OPS_H + +extern void (*x86emu_optab[0x100])(u8 op1); +extern void (*x86emu_optab2[0x100])(u8 op2); + +int x86emu_check_jump_condition(u8 op); + +#endif /* __X86EMU_OPS_H */ diff --git a/src/device/oprom/x86emu/ops2.c b/src/device/oprom/x86emu/ops2.c new file mode 100644 index 0000000000..95ec09a317 --- /dev/null +++ b/src/device/oprom/x86emu/ops2.c @@ -0,0 +1,1984 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file includes subroutines to implement the decoding +* and emulation of all the x86 extended two-byte processor +* instructions. +* +****************************************************************************/ + +#include "x86emui.h" + +/*----------------------------- Implementation ----------------------------*/ + +/**************************************************************************** +PARAMETERS: +op1 - Instruction op code + +REMARKS: +Handles illegal opcodes. +****************************************************************************/ +static void x86emuOp2_illegal_op(u8 op2) +{ + START_OF_INSTR(); + DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n"); + TRACE_REGS(); + printf("%04x:%04x: %02X ILLEGAL EXTENDED X86 OPCODE!\n", + M.x86.R_CS, M.x86.R_IP-2, op2); + HALT_SYS(); + END_OF_INSTR(); +} + +/**************************************************************************** + * REMARKS: + * Handles opcode 0x0f,0x01 + * ****************************************************************************/ + +static void x86emuOp2_opc_01(u8 op2) +{ + int mod, rl, rh; + u16 *destreg; + uint destoffset; + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + + switch(rh) { + case 4: // SMSW (Store Machine Status Word) + // Decode the mod byte to find the addressing + // Dummy implementation: Always returns 0x10 (initial value as per intel manual volume 3, figure 8-1) +#define SMSW_INITIAL_VALUE 0x10 + DECODE_PRINTF("SMSW\t"); + switch (mod) { + case 0: + destoffset = decode_rm00_address(rl); + store_data_word(destoffset, SMSW_INITIAL_VALUE); + break; + case 1: + destoffset = decode_rm01_address(rl); + store_data_word(destoffset, SMSW_INITIAL_VALUE); + break; + case 2: + destoffset = decode_rm10_address(rl); + store_data_word(destoffset, SMSW_INITIAL_VALUE); + break; + case 3: + destreg = DECODE_RM_WORD_REGISTER(rl); + *destreg = SMSW_INITIAL_VALUE; + break; + } + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + DECODE_PRINTF("\n"); + break; + default: + DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE IN 0F 01\n"); + TRACE_REGS(); + printf("%04x:%04x: %02X ILLEGAL EXTENDED X86 OPCODE!\n", + M.x86.R_CS, M.x86.R_IP-2, op2); + HALT_SYS(); + break; + } + + END_OF_INSTR(); +} + +/**************************************************************************** + * REMARKS: + * Handles opcode 0x0f,0x08 + * ****************************************************************************/ +static void x86emuOp2_invd(u8 op2) +{ + START_OF_INSTR(); + DECODE_PRINTF("INVD\n"); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** + * REMARKS: + * Handles opcode 0x0f,0x09 + * ****************************************************************************/ +static void x86emuOp2_wbinvd(u8 op2) +{ + START_OF_INSTR(); + DECODE_PRINTF("WBINVD\n"); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** + * REMARKS: + * Handles opcode 0x0f,0x30 + * ****************************************************************************/ +static void x86emuOp2_wrmsr(u8 op2) +{ + /* dummy implementation, does nothing */ + + START_OF_INSTR(); + DECODE_PRINTF("WRMSR\n"); + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0x31 +****************************************************************************/ +static void x86emuOp2_rdtsc(u8 X86EMU_UNUSED(op2)) +{ +#ifdef __HAS_LONG_LONG__ + static u64 counter = 0; +#else + static u32 counter = 0; +#endif + + counter += 0x10000; + + /* read timestamp counter */ + /* + * Note that instead of actually trying to accurately measure this, we just + * increase the counter by a fixed amount every time we hit one of these + * instructions. Feel free to come up with a better method. + */ + START_OF_INSTR(); + DECODE_PRINTF("RDTSC\n"); + TRACE_AND_STEP(); +#ifdef __HAS_LONG_LONG__ + M.x86.R_EAX = counter & 0xffffffff; + M.x86.R_EDX = counter >> 32; +#else + M.x86.R_EAX = counter; + M.x86.R_EDX = 0; +#endif + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** + * REMARKS: + * Handles opcode 0x0f,0x32 + * ****************************************************************************/ +static void x86emuOp2_rdmsr(u8 op2) +{ + /* dummy implementation, always return 0 */ + + START_OF_INSTR(); + DECODE_PRINTF("RDMSR\n"); + TRACE_AND_STEP(); + M.x86.R_EDX = 0; + M.x86.R_EAX = 0; + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +#define xorl(a,b) (((a) && !(b)) || (!(a) && (b))) + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0x80-0x8F +****************************************************************************/ +int x86emu_check_jump_condition(u8 op) +{ + switch (op) { + case 0x0: + DECODE_PRINTF("JO\t"); + return ACCESS_FLAG(F_OF); + case 0x1: + DECODE_PRINTF("JNO\t"); + return !ACCESS_FLAG(F_OF); + break; + case 0x2: + DECODE_PRINTF("JB\t"); + return ACCESS_FLAG(F_CF); + break; + case 0x3: + DECODE_PRINTF("JNB\t"); + return !ACCESS_FLAG(F_CF); + break; + case 0x4: + DECODE_PRINTF("JZ\t"); + return ACCESS_FLAG(F_ZF); + break; + case 0x5: + DECODE_PRINTF("JNZ\t"); + return !ACCESS_FLAG(F_ZF); + break; + case 0x6: + DECODE_PRINTF("JBE\t"); + return ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF); + break; + case 0x7: + DECODE_PRINTF("JNBE\t"); + return !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)); + break; + case 0x8: + DECODE_PRINTF("JS\t"); + return ACCESS_FLAG(F_SF); + break; + case 0x9: + DECODE_PRINTF("JNS\t"); + return !ACCESS_FLAG(F_SF); + break; + case 0xa: + DECODE_PRINTF("JP\t"); + return ACCESS_FLAG(F_PF); + break; + case 0xb: + DECODE_PRINTF("JNP\t"); + return !ACCESS_FLAG(F_PF); + break; + case 0xc: + DECODE_PRINTF("JL\t"); + return xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; + case 0xd: + DECODE_PRINTF("JNL\t"); + return !xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; + case 0xe: + DECODE_PRINTF("JLE\t"); + return (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + break; + default: + DECODE_PRINTF("JNLE\t"); + return !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + } +} + +static void x86emuOp2_long_jump(u8 op2) +{ + s32 target; + int cond; + + /* conditional jump to word offset. */ + START_OF_INSTR(); + cond = x86emu_check_jump_condition(op2 & 0xF); + target = (s16) fetch_word_imm(); + target += (s16) M.x86.R_IP; + DECODE_PRINTF2("%04x\n", target); + TRACE_AND_STEP(); + if (cond) { + M.x86.R_IP = (u16)target; + JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, M.x86.R_IP, " LONG COND "); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xC8-0xCF +****************************************************************************/ +static s32 x86emu_bswap(s32 reg) +{ + // perform the byte swap + s32 temp = reg; + reg = (temp & 0xFF000000) >> 24 | + (temp & 0xFF0000) >> 8 | + (temp & 0xFF00) << 8 | + (temp & 0xFF) << 24; + return reg; +} + +static void x86emuOp2_bswap(u8 op2) +{ + /* byte swap 32 bit register */ + START_OF_INSTR(); + DECODE_PRINTF("BSWAP\t"); + switch (op2) { + case 0xc8: + DECODE_PRINTF("EAX\n"); + M.x86.R_EAX = x86emu_bswap(M.x86.R_EAX); + break; + case 0xc9: + DECODE_PRINTF("ECX\n"); + M.x86.R_ECX = x86emu_bswap(M.x86.R_ECX); + break; + case 0xca: + DECODE_PRINTF("EDX\n"); + M.x86.R_EDX = x86emu_bswap(M.x86.R_EDX); + break; + case 0xcb: + DECODE_PRINTF("EBX\n"); + M.x86.R_EBX = x86emu_bswap(M.x86.R_EBX); + break; + case 0xcc: + DECODE_PRINTF("ESP\n"); + M.x86.R_ESP = x86emu_bswap(M.x86.R_ESP); + break; + case 0xcd: + DECODE_PRINTF("EBP\n"); + M.x86.R_EBP = x86emu_bswap(M.x86.R_EBP); + break; + case 0xce: + DECODE_PRINTF("ESI\n"); + M.x86.R_ESI = x86emu_bswap(M.x86.R_ESI); + break; + case 0xcf: + DECODE_PRINTF("EDI\n"); + M.x86.R_EDI = x86emu_bswap(M.x86.R_EDI); + break; + } + TRACE_AND_STEP(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0x90-0x9F +****************************************************************************/ +static void x86emuOp2_set_byte(u8 op2) +{ + int mod, rl, rh; + uint destoffset; + u8 *destreg; + const char *X86EMU_DEBUG_ONLY(name) = NULL; + int cond = 0; + + START_OF_INSTR(); + switch (op2) { + case 0x90: + name = "SETO\t"; + cond = ACCESS_FLAG(F_OF); + break; + case 0x91: + name = "SETNO\t"; + cond = !ACCESS_FLAG(F_OF); + break; + case 0x92: + name = "SETB\t"; + cond = ACCESS_FLAG(F_CF); + break; + case 0x93: + name = "SETNB\t"; + cond = !ACCESS_FLAG(F_CF); + break; + case 0x94: + name = "SETZ\t"; + cond = ACCESS_FLAG(F_ZF); + break; + case 0x95: + name = "SETNZ\t"; + cond = !ACCESS_FLAG(F_ZF); + break; + case 0x96: + name = "SETBE\t"; + cond = ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF); + break; + case 0x97: + name = "SETNBE\t"; + cond = !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)); + break; + case 0x98: + name = "SETS\t"; + cond = ACCESS_FLAG(F_SF); + break; + case 0x99: + name = "SETNS\t"; + cond = !ACCESS_FLAG(F_SF); + break; + case 0x9a: + name = "SETP\t"; + cond = ACCESS_FLAG(F_PF); + break; + case 0x9b: + name = "SETNP\t"; + cond = !ACCESS_FLAG(F_PF); + break; + case 0x9c: + name = "SETL\t"; + cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; + case 0x9d: + name = "SETNL\t"; + cond = !xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)); + break; + case 0x9e: + name = "SETLE\t"; + cond = (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + break; + case 0x9f: + name = "SETNLE\t"; + cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) || + ACCESS_FLAG(F_ZF)); + break; + } + DECODE_PRINTF(name); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + TRACE_AND_STEP(); + store_data_byte(destoffset, cond ? 0x01 : 0x00); + } else { /* register to register */ + destreg = DECODE_RM_BYTE_REGISTER(rl); + TRACE_AND_STEP(); + *destreg = cond ? 0x01 : 0x00; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa0 +****************************************************************************/ +static void x86emuOp2_push_FS(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tFS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_FS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa1 +****************************************************************************/ +static void x86emuOp2_pop_FS(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tFS\n"); + TRACE_AND_STEP(); + M.x86.R_FS = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: CPUID takes EAX/ECX as inputs, writes EAX/EBX/ECX/EDX as output +Handles opcode 0x0f,0xa2 +****************************************************************************/ +static void x86emuOp2_cpuid(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("CPUID\n"); + TRACE_AND_STEP(); + x86emu_cpuid(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa3 +****************************************************************************/ +static void x86emuOp2_bt_R(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + int bit,disp; + + START_OF_INSTR(); + DECODE_PRINTF("BT\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16)*shiftreg >> 5; + srcval = fetch_data_long(srcoffset+disp); + CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF); + } else { + u16 srcval; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16)*shiftreg >> 4; + srcval = fetch_data_word(srcoffset+disp); + CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg,*shiftreg; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit),F_CF); + } else { + u16 *srcreg,*shiftreg; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit),F_CF); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa4 +****************************************************************************/ +static void x86emuOp2_shld_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint destoffset; + u8 shift; + + START_OF_INSTR(); + DECODE_PRINTF("SHLD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shld_long(destval,*shiftreg,shift); + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shld_word(destval,*shiftreg,shift); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shld_long(*destreg,*shiftreg,shift); + } else { + u16 *destreg,*shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shld_word(*destreg,*shiftreg,shift); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa5 +****************************************************************************/ +static void x86emuOp2_shld_CL(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("SHLD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shld_long(destval,*shiftreg,M.x86.R_CL); + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shld_word(destval,*shiftreg,M.x86.R_CL); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shld_long(*destreg,*shiftreg,M.x86.R_CL); + } else { + u16 *destreg,*shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shld_word(*destreg,*shiftreg,M.x86.R_CL); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa8 +****************************************************************************/ +static void x86emuOp2_push_GS(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("PUSH\tGS\n"); + TRACE_AND_STEP(); + push_word(M.x86.R_GS); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xa9 +****************************************************************************/ +static void x86emuOp2_pop_GS(u8 X86EMU_UNUSED(op2)) +{ + START_OF_INSTR(); + DECODE_PRINTF("POP\tGS\n"); + TRACE_AND_STEP(); + M.x86.R_GS = pop_word(); + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xab +****************************************************************************/ +static void x86emuOp2_bts_R(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + int bit,disp; + + START_OF_INSTR(); + DECODE_PRINTF("BTS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval,mask; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16)*shiftreg >> 5; + srcval = fetch_data_long(srcoffset+disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_long(srcoffset+disp, srcval | mask); + } else { + u16 srcval,mask; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16)*shiftreg >> 4; + srcval = fetch_data_word(srcoffset+disp); + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_word(srcoffset+disp, srcval | mask); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg,*shiftreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg |= mask; + } else { + u16 *srcreg,*shiftreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg |= mask; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xac +****************************************************************************/ +static void x86emuOp2_shrd_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint destoffset; + u8 shift; + + START_OF_INSTR(); + DECODE_PRINTF("SHLD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shrd_long(destval,*shiftreg,shift); + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *shiftreg; + + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shrd_word(destval,*shiftreg,shift); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shrd_long(*destreg,*shiftreg,shift); + } else { + u16 *destreg,*shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + shift = fetch_byte_imm(); + DECODE_PRINTF2("%d\n", shift); + TRACE_AND_STEP(); + *destreg = shrd_word(*destreg,*shiftreg,shift); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xad +****************************************************************************/ +static void x86emuOp2_shrd_CL(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint destoffset; + + START_OF_INSTR(); + DECODE_PRINTF("SHLD\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 destval; + u32 *shiftreg; + + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_long(destoffset); + destval = shrd_long(destval,*shiftreg,M.x86.R_CL); + store_data_long(destoffset, destval); + } else { + u16 destval; + u16 *shiftreg; + + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + destval = fetch_data_word(destoffset); + destval = shrd_word(destval,*shiftreg,M.x86.R_CL); + store_data_word(destoffset, destval); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*shiftreg; + + destreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shrd_long(*destreg,*shiftreg,M.x86.R_CL); + } else { + u16 *destreg,*shiftreg; + + destreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(",CL\n"); + TRACE_AND_STEP(); + *destreg = shrd_word(*destreg,*shiftreg,M.x86.R_CL); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xaf +****************************************************************************/ +static void x86emuOp2_imul_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("IMUL\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + u32 res_lo,res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_long(srcoffset); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)srcval); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg; + u16 srcval; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_word(srcoffset); + TRACE_AND_STEP(); + res = (s16)*destreg * (s16)srcval; + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16)res; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg,*srcreg; + u32 res_lo,res_hi; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_LONG_REGISTER(rl); + TRACE_AND_STEP(); + imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)*srcreg); + if (res_hi != 0) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u32)res_lo; + } else { + u16 *destreg,*srcreg; + u32 res; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + res = (s16)*destreg * (s16)*srcreg; + if (res > 0xFFFF) { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } + *destreg = (u16)res; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb2 +****************************************************************************/ +static void x86emuOp2_lss_R_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LSS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_SS = fetch_data_word(srcoffset + 2); + } else { /* register to register */ + /* UNDEFINED! */ + TRACE_AND_STEP(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb3 +****************************************************************************/ +static void x86emuOp2_btr_R(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + int bit,disp; + + START_OF_INSTR(); + DECODE_PRINTF("BTR\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval,mask; + u32 *shiftreg; + + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16)*shiftreg >> 5; + srcval = fetch_data_long(srcoffset+disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_long(srcoffset+disp, srcval & ~mask); + } else { + u16 srcval,mask; + u16 *shiftreg; + + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16)*shiftreg >> 4; + srcval = fetch_data_word(srcoffset+disp); + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_word(srcoffset+disp, (u16)(srcval & ~mask)); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg,*shiftreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg &= ~mask; + } else { + u16 *srcreg,*shiftreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg &= ~mask; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb4 +****************************************************************************/ +static void x86emuOp2_lfs_R_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LFS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_FS = fetch_data_word(srcoffset + 2); + } else { /* register to register */ + /* UNDEFINED! */ + TRACE_AND_STEP(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb5 +****************************************************************************/ +static void x86emuOp2_lgs_R_IMM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rh, rl; + u16 *dstreg; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("LGS\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + dstreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *dstreg = fetch_data_word(srcoffset); + M.x86.R_GS = fetch_data_word(srcoffset + 2); + } else { /* register to register */ + /* UNDEFINED! */ + TRACE_AND_STEP(); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb6 +****************************************************************************/ +static void x86emuOp2_movzx_byte_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOVZX\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_byte(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } else { + u16 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xb7 +****************************************************************************/ +static void x86emuOp2_movzx_word_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + u32 *destreg; + u32 srcval; + u16 *srcreg; + + START_OF_INSTR(); + DECODE_PRINTF("MOVZX\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = fetch_data_word(srcoffset); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { /* register to register */ + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = *srcreg; + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xba +****************************************************************************/ +static void x86emuOp2_btX_I(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + u8 shift; + int bit; + + START_OF_INSTR(); + FETCH_DECODE_MODRM(mod, rh, rl); + switch (rh) { + case 4: + DECODE_PRINTF("BT\t"); + break; + case 5: + DECODE_PRINTF("BTS\t"); + break; + case 6: + DECODE_PRINTF("BTR\t"); + break; + case 7: + DECODE_PRINTF("BTC\t"); + break; + default: + DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n"); + TRACE_REGS(); + printf("%04x:%04x: %02X%02X ILLEGAL EXTENDED X86 OPCODE EXTENSION!\n", + M.x86.R_CS, M.x86.R_IP-3,op2, (mod<<6)|(rh<<3)|rl); + HALT_SYS(); + } + if (mod < 3) { + + srcoffset = decode_rmXX_address(mod, rl); + shift = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", shift); + TRACE_AND_STEP(); + + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, mask; + + bit = shift & 0x1F; + srcval = fetch_data_long(srcoffset); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + switch (rh) { + case 5: + store_data_long(srcoffset, srcval | mask); + break; + case 6: + store_data_long(srcoffset, srcval & ~mask); + break; + case 7: + store_data_long(srcoffset, srcval ^ mask); + break; + default: + break; + } + } else { + u16 srcval, mask; + + bit = shift & 0xF; + srcval = fetch_data_word(srcoffset); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + switch (rh) { + case 5: + store_data_word(srcoffset, srcval | mask); + break; + case 6: + store_data_word(srcoffset, srcval & ~mask); + break; + case 7: + store_data_word(srcoffset, srcval ^ mask); + break; + default: + break; + } + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + shift = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", shift); + TRACE_AND_STEP(); + bit = shift & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + switch (rh) { + case 5: + *srcreg |= mask; + break; + case 6: + *srcreg &= ~mask; + break; + case 7: + *srcreg ^= mask; + break; + default: + break; + } + } else { + u16 *srcreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + shift = fetch_byte_imm(); + DECODE_PRINTF2(",%d\n", shift); + TRACE_AND_STEP(); + bit = shift & 0xF; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + switch (rh) { + case 5: + *srcreg |= mask; + break; + case 6: + *srcreg &= ~mask; + break; + case 7: + *srcreg ^= mask; + break; + default: + break; + } + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbb +****************************************************************************/ +static void x86emuOp2_btc_R(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + int bit,disp; + + START_OF_INSTR(); + DECODE_PRINTF("BTC\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval,mask; + u32 *shiftreg; + + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + disp = (s16)*shiftreg >> 5; + srcval = fetch_data_long(srcoffset+disp); + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_long(srcoffset+disp, srcval ^ mask); + } else { + u16 srcval,mask; + u16 *shiftreg; + + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + disp = (s16)*shiftreg >> 4; + srcval = fetch_data_word(srcoffset+disp); + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(srcval & mask,F_CF); + store_data_word(srcoffset+disp, (u16)(srcval ^ mask)); + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *srcreg,*shiftreg; + u32 mask; + + srcreg = DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0x1F; + mask = (0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg ^= mask; + } else { + u16 *srcreg,*shiftreg; + u16 mask; + + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + shiftreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + bit = *shiftreg & 0xF; + mask = (u16)(0x1 << bit); + CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF); + *srcreg ^= mask; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbc +****************************************************************************/ +static void x86emuOp2_bsf(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("BSF\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_long(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 0; *dstreg < 32; (*dstreg)++) + if ((srcval >> *dstreg) & 1) break; + } else { + u16 srcval, *dstreg; + + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_word(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 0; *dstreg < 16; (*dstreg)++) + if ((srcval >> *dstreg) & 1) break; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + srcval = *DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 0; *dstreg < 32; (*dstreg)++) + if ((srcval >> *dstreg) & 1) break; + } else { + u16 srcval, *dstreg; + + srcval = *DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 0; *dstreg < 16; (*dstreg)++) + if ((srcval >> *dstreg) & 1) break; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbd +****************************************************************************/ +static void x86emuOp2_bsr(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("BSR\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + srcoffset = decode_rmXX_address(mod, rl); + DECODE_PRINTF(","); + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_long(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 31; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) break; + } else { + u16 srcval, *dstreg; + + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + srcval = fetch_data_word(srcoffset); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 15; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) break; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 srcval, *dstreg; + + srcval = *DECODE_RM_LONG_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_LONG_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 31; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) break; + } else { + u16 srcval, *dstreg; + + srcval = *DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF(","); + dstreg = DECODE_RM_WORD_REGISTER(rh); + TRACE_AND_STEP(); + CONDITIONAL_SET_FLAG(srcval == 0, F_ZF); + for(*dstreg = 15; *dstreg > 0; (*dstreg)--) + if ((srcval >> *dstreg) & 1) break; + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbe +****************************************************************************/ +static void x86emuOp2_movsx_byte_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + + START_OF_INSTR(); + DECODE_PRINTF("MOVSX\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u32 srcval; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = (s32)((s8)fetch_data_byte(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { + u16 *destreg; + u16 srcval; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = (s16)((s8)fetch_data_byte(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } + } else { /* register to register */ + if (M.x86.mode & SYSMODE_PREFIX_DATA) { + u32 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = (s32)((s8)*srcreg); + } else { + u16 *destreg; + u8 *srcreg; + + destreg = DECODE_RM_WORD_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_BYTE_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = (s16)((s8)*srcreg); + } + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/**************************************************************************** +REMARKS: +Handles opcode 0x0f,0xbf +****************************************************************************/ +static void x86emuOp2_movsx_word_R_RM(u8 X86EMU_UNUSED(op2)) +{ + int mod, rl, rh; + uint srcoffset; + u32 *destreg; + u32 srcval; + u16 *srcreg; + + START_OF_INSTR(); + DECODE_PRINTF("MOVSX\t"); + FETCH_DECODE_MODRM(mod, rh, rl); + if (mod < 3) { + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcoffset = decode_rmXX_address(mod, rl); + srcval = (s32)((s16)fetch_data_word(srcoffset)); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = srcval; + } else { /* register to register */ + destreg = DECODE_RM_LONG_REGISTER(rh); + DECODE_PRINTF(","); + srcreg = DECODE_RM_WORD_REGISTER(rl); + DECODE_PRINTF("\n"); + TRACE_AND_STEP(); + *destreg = (s32)((s16)*srcreg); + } + DECODE_CLEAR_SEGOVR(); + END_OF_INSTR(); +} + +/*************************************************************************** + * Double byte operation code table: + **************************************************************************/ +void (*x86emu_optab2[256])(u8) = +{ +/* 0x00 */ x86emuOp2_illegal_op, /* Group F (ring 0 PM) */ +/* 0x01 */ x86emuOp2_opc_01, /* Group G (ring 0 PM) */ +/* 0x02 */ x86emuOp2_illegal_op, /* lar (ring 0 PM) */ +/* 0x03 */ x86emuOp2_illegal_op, /* lsl (ring 0 PM) */ +/* 0x04 */ x86emuOp2_illegal_op, +/* 0x05 */ x86emuOp2_illegal_op, /* loadall (undocumented) */ +/* 0x06 */ x86emuOp2_illegal_op, /* clts (ring 0 PM) */ +/* 0x07 */ x86emuOp2_illegal_op, /* loadall (undocumented) */ +/* 0x08 */ x86emuOp2_invd, /* invd (ring 0 PM) */ +/* 0x09 */ x86emuOp2_wbinvd, /* wbinvd (ring 0 PM) */ +/* 0x0a */ x86emuOp2_illegal_op, +/* 0x0b */ x86emuOp2_illegal_op, +/* 0x0c */ x86emuOp2_illegal_op, +/* 0x0d */ x86emuOp2_illegal_op, +/* 0x0e */ x86emuOp2_illegal_op, +/* 0x0f */ x86emuOp2_illegal_op, + +/* 0x10 */ x86emuOp2_illegal_op, +/* 0x11 */ x86emuOp2_illegal_op, +/* 0x12 */ x86emuOp2_illegal_op, +/* 0x13 */ x86emuOp2_illegal_op, +/* 0x14 */ x86emuOp2_illegal_op, +/* 0x15 */ x86emuOp2_illegal_op, +/* 0x16 */ x86emuOp2_illegal_op, +/* 0x17 */ x86emuOp2_illegal_op, +/* 0x18 */ x86emuOp2_illegal_op, +/* 0x19 */ x86emuOp2_illegal_op, +/* 0x1a */ x86emuOp2_illegal_op, +/* 0x1b */ x86emuOp2_illegal_op, +/* 0x1c */ x86emuOp2_illegal_op, +/* 0x1d */ x86emuOp2_illegal_op, +/* 0x1e */ x86emuOp2_illegal_op, +/* 0x1f */ x86emuOp2_illegal_op, + +/* 0x20 */ x86emuOp2_illegal_op, /* mov reg32,creg (ring 0 PM) */ +/* 0x21 */ x86emuOp2_illegal_op, /* mov reg32,dreg (ring 0 PM) */ +/* 0x22 */ x86emuOp2_illegal_op, /* mov creg,reg32 (ring 0 PM) */ +/* 0x23 */ x86emuOp2_illegal_op, /* mov dreg,reg32 (ring 0 PM) */ +/* 0x24 */ x86emuOp2_illegal_op, /* mov reg32,treg (ring 0 PM) */ +/* 0x25 */ x86emuOp2_illegal_op, +/* 0x26 */ x86emuOp2_illegal_op, /* mov treg,reg32 (ring 0 PM) */ +/* 0x27 */ x86emuOp2_illegal_op, +/* 0x28 */ x86emuOp2_illegal_op, +/* 0x29 */ x86emuOp2_illegal_op, +/* 0x2a */ x86emuOp2_illegal_op, +/* 0x2b */ x86emuOp2_illegal_op, +/* 0x2c */ x86emuOp2_illegal_op, +/* 0x2d */ x86emuOp2_illegal_op, +/* 0x2e */ x86emuOp2_illegal_op, +/* 0x2f */ x86emuOp2_illegal_op, + +/* 0x30 */ x86emuOp2_wrmsr, +/* 0x31 */ x86emuOp2_rdtsc, +/* 0x32 */ x86emuOp2_rdmsr, +/* 0x33 */ x86emuOp2_illegal_op, +/* 0x34 */ x86emuOp2_illegal_op, +/* 0x35 */ x86emuOp2_illegal_op, +/* 0x36 */ x86emuOp2_illegal_op, +/* 0x37 */ x86emuOp2_illegal_op, +/* 0x38 */ x86emuOp2_illegal_op, +/* 0x39 */ x86emuOp2_illegal_op, +/* 0x3a */ x86emuOp2_illegal_op, +/* 0x3b */ x86emuOp2_illegal_op, +/* 0x3c */ x86emuOp2_illegal_op, +/* 0x3d */ x86emuOp2_illegal_op, +/* 0x3e */ x86emuOp2_illegal_op, +/* 0x3f */ x86emuOp2_illegal_op, + +/* 0x40 */ x86emuOp2_illegal_op, +/* 0x41 */ x86emuOp2_illegal_op, +/* 0x42 */ x86emuOp2_illegal_op, +/* 0x43 */ x86emuOp2_illegal_op, +/* 0x44 */ x86emuOp2_illegal_op, +/* 0x45 */ x86emuOp2_illegal_op, +/* 0x46 */ x86emuOp2_illegal_op, +/* 0x47 */ x86emuOp2_illegal_op, +/* 0x48 */ x86emuOp2_illegal_op, +/* 0x49 */ x86emuOp2_illegal_op, +/* 0x4a */ x86emuOp2_illegal_op, +/* 0x4b */ x86emuOp2_illegal_op, +/* 0x4c */ x86emuOp2_illegal_op, +/* 0x4d */ x86emuOp2_illegal_op, +/* 0x4e */ x86emuOp2_illegal_op, +/* 0x4f */ x86emuOp2_illegal_op, + +/* 0x50 */ x86emuOp2_illegal_op, +/* 0x51 */ x86emuOp2_illegal_op, +/* 0x52 */ x86emuOp2_illegal_op, +/* 0x53 */ x86emuOp2_illegal_op, +/* 0x54 */ x86emuOp2_illegal_op, +/* 0x55 */ x86emuOp2_illegal_op, +/* 0x56 */ x86emuOp2_illegal_op, +/* 0x57 */ x86emuOp2_illegal_op, +/* 0x58 */ x86emuOp2_illegal_op, +/* 0x59 */ x86emuOp2_illegal_op, +/* 0x5a */ x86emuOp2_illegal_op, +/* 0x5b */ x86emuOp2_illegal_op, +/* 0x5c */ x86emuOp2_illegal_op, +/* 0x5d */ x86emuOp2_illegal_op, +/* 0x5e */ x86emuOp2_illegal_op, +/* 0x5f */ x86emuOp2_illegal_op, + +/* 0x60 */ x86emuOp2_illegal_op, +/* 0x61 */ x86emuOp2_illegal_op, +/* 0x62 */ x86emuOp2_illegal_op, +/* 0x63 */ x86emuOp2_illegal_op, +/* 0x64 */ x86emuOp2_illegal_op, +/* 0x65 */ x86emuOp2_illegal_op, +/* 0x66 */ x86emuOp2_illegal_op, +/* 0x67 */ x86emuOp2_illegal_op, +/* 0x68 */ x86emuOp2_illegal_op, +/* 0x69 */ x86emuOp2_illegal_op, +/* 0x6a */ x86emuOp2_illegal_op, +/* 0x6b */ x86emuOp2_illegal_op, +/* 0x6c */ x86emuOp2_illegal_op, +/* 0x6d */ x86emuOp2_illegal_op, +/* 0x6e */ x86emuOp2_illegal_op, +/* 0x6f */ x86emuOp2_illegal_op, + +/* 0x70 */ x86emuOp2_illegal_op, +/* 0x71 */ x86emuOp2_illegal_op, +/* 0x72 */ x86emuOp2_illegal_op, +/* 0x73 */ x86emuOp2_illegal_op, +/* 0x74 */ x86emuOp2_illegal_op, +/* 0x75 */ x86emuOp2_illegal_op, +/* 0x76 */ x86emuOp2_illegal_op, +/* 0x77 */ x86emuOp2_illegal_op, +/* 0x78 */ x86emuOp2_illegal_op, +/* 0x79 */ x86emuOp2_illegal_op, +/* 0x7a */ x86emuOp2_illegal_op, +/* 0x7b */ x86emuOp2_illegal_op, +/* 0x7c */ x86emuOp2_illegal_op, +/* 0x7d */ x86emuOp2_illegal_op, +/* 0x7e */ x86emuOp2_illegal_op, +/* 0x7f */ x86emuOp2_illegal_op, + +/* 0x80 */ x86emuOp2_long_jump, +/* 0x81 */ x86emuOp2_long_jump, +/* 0x82 */ x86emuOp2_long_jump, +/* 0x83 */ x86emuOp2_long_jump, +/* 0x84 */ x86emuOp2_long_jump, +/* 0x85 */ x86emuOp2_long_jump, +/* 0x86 */ x86emuOp2_long_jump, +/* 0x87 */ x86emuOp2_long_jump, +/* 0x88 */ x86emuOp2_long_jump, +/* 0x89 */ x86emuOp2_long_jump, +/* 0x8a */ x86emuOp2_long_jump, +/* 0x8b */ x86emuOp2_long_jump, +/* 0x8c */ x86emuOp2_long_jump, +/* 0x8d */ x86emuOp2_long_jump, +/* 0x8e */ x86emuOp2_long_jump, +/* 0x8f */ x86emuOp2_long_jump, + +/* 0x90 */ x86emuOp2_set_byte, +/* 0x91 */ x86emuOp2_set_byte, +/* 0x92 */ x86emuOp2_set_byte, +/* 0x93 */ x86emuOp2_set_byte, +/* 0x94 */ x86emuOp2_set_byte, +/* 0x95 */ x86emuOp2_set_byte, +/* 0x96 */ x86emuOp2_set_byte, +/* 0x97 */ x86emuOp2_set_byte, +/* 0x98 */ x86emuOp2_set_byte, +/* 0x99 */ x86emuOp2_set_byte, +/* 0x9a */ x86emuOp2_set_byte, +/* 0x9b */ x86emuOp2_set_byte, +/* 0x9c */ x86emuOp2_set_byte, +/* 0x9d */ x86emuOp2_set_byte, +/* 0x9e */ x86emuOp2_set_byte, +/* 0x9f */ x86emuOp2_set_byte, + +/* 0xa0 */ x86emuOp2_push_FS, +/* 0xa1 */ x86emuOp2_pop_FS, +/* 0xa2 */ x86emuOp2_cpuid, +/* 0xa3 */ x86emuOp2_bt_R, +/* 0xa4 */ x86emuOp2_shld_IMM, +/* 0xa5 */ x86emuOp2_shld_CL, +/* 0xa6 */ x86emuOp2_illegal_op, +/* 0xa7 */ x86emuOp2_illegal_op, +/* 0xa8 */ x86emuOp2_push_GS, +/* 0xa9 */ x86emuOp2_pop_GS, +/* 0xaa */ x86emuOp2_illegal_op, +/* 0xab */ x86emuOp2_bts_R, +/* 0xac */ x86emuOp2_shrd_IMM, +/* 0xad */ x86emuOp2_shrd_CL, +/* 0xae */ x86emuOp2_illegal_op, +/* 0xaf */ x86emuOp2_imul_R_RM, + +/* 0xb0 */ x86emuOp2_illegal_op, /* TODO: cmpxchg */ +/* 0xb1 */ x86emuOp2_illegal_op, /* TODO: cmpxchg */ +/* 0xb2 */ x86emuOp2_lss_R_IMM, +/* 0xb3 */ x86emuOp2_btr_R, +/* 0xb4 */ x86emuOp2_lfs_R_IMM, +/* 0xb5 */ x86emuOp2_lgs_R_IMM, +/* 0xb6 */ x86emuOp2_movzx_byte_R_RM, +/* 0xb7 */ x86emuOp2_movzx_word_R_RM, +/* 0xb8 */ x86emuOp2_illegal_op, +/* 0xb9 */ x86emuOp2_illegal_op, +/* 0xba */ x86emuOp2_btX_I, +/* 0xbb */ x86emuOp2_btc_R, +/* 0xbc */ x86emuOp2_bsf, +/* 0xbd */ x86emuOp2_bsr, +/* 0xbe */ x86emuOp2_movsx_byte_R_RM, +/* 0xbf */ x86emuOp2_movsx_word_R_RM, + +/* 0xc0 */ x86emuOp2_illegal_op, /* TODO: xadd */ +/* 0xc1 */ x86emuOp2_illegal_op, /* TODO: xadd */ +/* 0xc2 */ x86emuOp2_illegal_op, +/* 0xc3 */ x86emuOp2_illegal_op, +/* 0xc4 */ x86emuOp2_illegal_op, +/* 0xc5 */ x86emuOp2_illegal_op, +/* 0xc6 */ x86emuOp2_illegal_op, +/* 0xc7 */ x86emuOp2_illegal_op, +/* 0xc8 */ x86emuOp2_bswap, +/* 0xc9 */ x86emuOp2_bswap, +/* 0xca */ x86emuOp2_bswap, +/* 0xcb */ x86emuOp2_bswap, +/* 0xcc */ x86emuOp2_bswap, +/* 0xcd */ x86emuOp2_bswap, +/* 0xce */ x86emuOp2_bswap, +/* 0xcf */ x86emuOp2_bswap, + +/* 0xd0 */ x86emuOp2_illegal_op, +/* 0xd1 */ x86emuOp2_illegal_op, +/* 0xd2 */ x86emuOp2_illegal_op, +/* 0xd3 */ x86emuOp2_illegal_op, +/* 0xd4 */ x86emuOp2_illegal_op, +/* 0xd5 */ x86emuOp2_illegal_op, +/* 0xd6 */ x86emuOp2_illegal_op, +/* 0xd7 */ x86emuOp2_illegal_op, +/* 0xd8 */ x86emuOp2_illegal_op, +/* 0xd9 */ x86emuOp2_illegal_op, +/* 0xda */ x86emuOp2_illegal_op, +/* 0xdb */ x86emuOp2_illegal_op, +/* 0xdc */ x86emuOp2_illegal_op, +/* 0xdd */ x86emuOp2_illegal_op, +/* 0xde */ x86emuOp2_illegal_op, +/* 0xdf */ x86emuOp2_illegal_op, + +/* 0xe0 */ x86emuOp2_illegal_op, +/* 0xe1 */ x86emuOp2_illegal_op, +/* 0xe2 */ x86emuOp2_illegal_op, +/* 0xe3 */ x86emuOp2_illegal_op, +/* 0xe4 */ x86emuOp2_illegal_op, +/* 0xe5 */ x86emuOp2_illegal_op, +/* 0xe6 */ x86emuOp2_illegal_op, +/* 0xe7 */ x86emuOp2_illegal_op, +/* 0xe8 */ x86emuOp2_illegal_op, +/* 0xe9 */ x86emuOp2_illegal_op, +/* 0xea */ x86emuOp2_illegal_op, +/* 0xeb */ x86emuOp2_illegal_op, +/* 0xec */ x86emuOp2_illegal_op, +/* 0xed */ x86emuOp2_illegal_op, +/* 0xee */ x86emuOp2_illegal_op, +/* 0xef */ x86emuOp2_illegal_op, + +/* 0xf0 */ x86emuOp2_illegal_op, +/* 0xf1 */ x86emuOp2_illegal_op, +/* 0xf2 */ x86emuOp2_illegal_op, +/* 0xf3 */ x86emuOp2_illegal_op, +/* 0xf4 */ x86emuOp2_illegal_op, +/* 0xf5 */ x86emuOp2_illegal_op, +/* 0xf6 */ x86emuOp2_illegal_op, +/* 0xf7 */ x86emuOp2_illegal_op, +/* 0xf8 */ x86emuOp2_illegal_op, +/* 0xf9 */ x86emuOp2_illegal_op, +/* 0xfa */ x86emuOp2_illegal_op, +/* 0xfb */ x86emuOp2_illegal_op, +/* 0xfc */ x86emuOp2_illegal_op, +/* 0xfd */ x86emuOp2_illegal_op, +/* 0xfe */ x86emuOp2_illegal_op, +/* 0xff */ x86emuOp2_illegal_op, +}; diff --git a/src/device/oprom/x86emu/prim_asm.h b/src/device/oprom/x86emu/prim_asm.h new file mode 100644 index 0000000000..4fa8d55034 --- /dev/null +++ b/src/device/oprom/x86emu/prim_asm.h @@ -0,0 +1,971 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: Watcom C++ 10.6 or later +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Inline assembler versions of the primitive operand +* functions for faster performance. At the moment this is +* x86 inline assembler, but these functions could be replaced +* with native inline assembler for each supported processor +* platform. +* +****************************************************************************/ +/* $XFree86: xc/extras/x86emu/src/x86emu/x86emu/prim_asm.h,v 1.3 2000/04/19 15:48:15 tsi Exp $ */ + +#ifndef __X86EMU_PRIM_ASM_H +#define __X86EMU_PRIM_ASM_H + +#ifdef __WATCOMC__ + +#ifndef VALIDATE +#define __HAVE_INLINE_ASSEMBLER__ +#endif + +u32 get_flags_asm(void); +#pragma aux get_flags_asm = \ + "pushf" \ + "pop eax" \ + value [eax] \ + modify exact [eax]; + +u16 aaa_word_asm(u32 *flags,u16 d); +#pragma aux aaa_word_asm = \ + "push [edi]" \ + "popf" \ + "aaa" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u16 aas_word_asm(u32 *flags,u16 d); +#pragma aux aas_word_asm = \ + "push [edi]" \ + "popf" \ + "aas" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u16 aad_word_asm(u32 *flags,u16 d); +#pragma aux aad_word_asm = \ + "push [edi]" \ + "popf" \ + "aad" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u16 aam_word_asm(u32 *flags,u8 d); +#pragma aux aam_word_asm = \ + "push [edi]" \ + "popf" \ + "aam" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [ax] \ + modify exact [ax]; + +u8 adc_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux adc_byte_asm = \ + "push [edi]" \ + "popf" \ + "adc al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 adc_word_asm(u32 *flags,u16 d, u16 s); +#pragma aux adc_word_asm = \ + "push [edi]" \ + "popf" \ + "adc ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 adc_long_asm(u32 *flags,u32 d, u32 s); +#pragma aux adc_long_asm = \ + "push [edi]" \ + "popf" \ + "adc eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 add_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux add_byte_asm = \ + "push [edi]" \ + "popf" \ + "add al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 add_word_asm(u32 *flags,u16 d, u16 s); +#pragma aux add_word_asm = \ + "push [edi]" \ + "popf" \ + "add ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 add_long_asm(u32 *flags,u32 d, u32 s); +#pragma aux add_long_asm = \ + "push [edi]" \ + "popf" \ + "add eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 and_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux and_byte_asm = \ + "push [edi]" \ + "popf" \ + "and al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 and_word_asm(u32 *flags,u16 d, u16 s); +#pragma aux and_word_asm = \ + "push [edi]" \ + "popf" \ + "and ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 and_long_asm(u32 *flags,u32 d, u32 s); +#pragma aux and_long_asm = \ + "push [edi]" \ + "popf" \ + "and eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 cmp_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux cmp_byte_asm = \ + "push [edi]" \ + "popf" \ + "cmp al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 cmp_word_asm(u32 *flags,u16 d, u16 s); +#pragma aux cmp_word_asm = \ + "push [edi]" \ + "popf" \ + "cmp ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 cmp_long_asm(u32 *flags,u32 d, u32 s); +#pragma aux cmp_long_asm = \ + "push [edi]" \ + "popf" \ + "cmp eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 daa_byte_asm(u32 *flags,u8 d); +#pragma aux daa_byte_asm = \ + "push [edi]" \ + "popf" \ + "daa" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u8 das_byte_asm(u32 *flags,u8 d); +#pragma aux das_byte_asm = \ + "push [edi]" \ + "popf" \ + "das" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u8 dec_byte_asm(u32 *flags,u8 d); +#pragma aux dec_byte_asm = \ + "push [edi]" \ + "popf" \ + "dec al" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u16 dec_word_asm(u32 *flags,u16 d); +#pragma aux dec_word_asm = \ + "push [edi]" \ + "popf" \ + "dec ax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u32 dec_long_asm(u32 *flags,u32 d); +#pragma aux dec_long_asm = \ + "push [edi]" \ + "popf" \ + "dec eax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] \ + value [eax] \ + modify exact [eax]; + +u8 inc_byte_asm(u32 *flags,u8 d); +#pragma aux inc_byte_asm = \ + "push [edi]" \ + "popf" \ + "inc al" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u16 inc_word_asm(u32 *flags,u16 d); +#pragma aux inc_word_asm = \ + "push [edi]" \ + "popf" \ + "inc ax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u32 inc_long_asm(u32 *flags,u32 d); +#pragma aux inc_long_asm = \ + "push [edi]" \ + "popf" \ + "inc eax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] \ + value [eax] \ + modify exact [eax]; + +u8 or_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux or_byte_asm = \ + "push [edi]" \ + "popf" \ + "or al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 or_word_asm(u32 *flags,u16 d, u16 s); +#pragma aux or_word_asm = \ + "push [edi]" \ + "popf" \ + "or ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 or_long_asm(u32 *flags,u32 d, u32 s); +#pragma aux or_long_asm = \ + "push [edi]" \ + "popf" \ + "or eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 neg_byte_asm(u32 *flags,u8 d); +#pragma aux neg_byte_asm = \ + "push [edi]" \ + "popf" \ + "neg al" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u16 neg_word_asm(u32 *flags,u16 d); +#pragma aux neg_word_asm = \ + "push [edi]" \ + "popf" \ + "neg ax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u32 neg_long_asm(u32 *flags,u32 d); +#pragma aux neg_long_asm = \ + "push [edi]" \ + "popf" \ + "neg eax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] \ + value [eax] \ + modify exact [eax]; + +u8 not_byte_asm(u32 *flags,u8 d); +#pragma aux not_byte_asm = \ + "push [edi]" \ + "popf" \ + "not al" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] \ + value [al] \ + modify exact [al]; + +u16 not_word_asm(u32 *flags,u16 d); +#pragma aux not_word_asm = \ + "push [edi]" \ + "popf" \ + "not ax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] \ + value [ax] \ + modify exact [ax]; + +u32 not_long_asm(u32 *flags,u32 d); +#pragma aux not_long_asm = \ + "push [edi]" \ + "popf" \ + "not eax" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] \ + value [eax] \ + modify exact [eax]; + +u8 rcl_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux rcl_byte_asm = \ + "push [edi]" \ + "popf" \ + "rcl al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 rcl_word_asm(u32 *flags,u16 d, u8 s); +#pragma aux rcl_word_asm = \ + "push [edi]" \ + "popf" \ + "rcl ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 rcl_long_asm(u32 *flags,u32 d, u8 s); +#pragma aux rcl_long_asm = \ + "push [edi]" \ + "popf" \ + "rcl eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 rcr_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux rcr_byte_asm = \ + "push [edi]" \ + "popf" \ + "rcr al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 rcr_word_asm(u32 *flags,u16 d, u8 s); +#pragma aux rcr_word_asm = \ + "push [edi]" \ + "popf" \ + "rcr ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 rcr_long_asm(u32 *flags,u32 d, u8 s); +#pragma aux rcr_long_asm = \ + "push [edi]" \ + "popf" \ + "rcr eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 rol_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux rol_byte_asm = \ + "push [edi]" \ + "popf" \ + "rol al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 rol_word_asm(u32 *flags,u16 d, u8 s); +#pragma aux rol_word_asm = \ + "push [edi]" \ + "popf" \ + "rol ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 rol_long_asm(u32 *flags,u32 d, u8 s); +#pragma aux rol_long_asm = \ + "push [edi]" \ + "popf" \ + "rol eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 ror_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux ror_byte_asm = \ + "push [edi]" \ + "popf" \ + "ror al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 ror_word_asm(u32 *flags,u16 d, u8 s); +#pragma aux ror_word_asm = \ + "push [edi]" \ + "popf" \ + "ror ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 ror_long_asm(u32 *flags,u32 d, u8 s); +#pragma aux ror_long_asm = \ + "push [edi]" \ + "popf" \ + "ror eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 shl_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux shl_byte_asm = \ + "push [edi]" \ + "popf" \ + "shl al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 shl_word_asm(u32 *flags,u16 d, u8 s); +#pragma aux shl_word_asm = \ + "push [edi]" \ + "popf" \ + "shl ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 shl_long_asm(u32 *flags,u32 d, u8 s); +#pragma aux shl_long_asm = \ + "push [edi]" \ + "popf" \ + "shl eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 shr_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux shr_byte_asm = \ + "push [edi]" \ + "popf" \ + "shr al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 shr_word_asm(u32 *flags,u16 d, u8 s); +#pragma aux shr_word_asm = \ + "push [edi]" \ + "popf" \ + "shr ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 shr_long_asm(u32 *flags,u32 d, u8 s); +#pragma aux shr_long_asm = \ + "push [edi]" \ + "popf" \ + "shr eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u8 sar_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux sar_byte_asm = \ + "push [edi]" \ + "popf" \ + "sar al,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [cl] \ + value [al] \ + modify exact [al cl]; + +u16 sar_word_asm(u32 *flags,u16 d, u8 s); +#pragma aux sar_word_asm = \ + "push [edi]" \ + "popf" \ + "sar ax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [cl] \ + value [ax] \ + modify exact [ax cl]; + +u32 sar_long_asm(u32 *flags,u32 d, u8 s); +#pragma aux sar_long_asm = \ + "push [edi]" \ + "popf" \ + "sar eax,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [cl] \ + value [eax] \ + modify exact [eax cl]; + +u16 shld_word_asm(u32 *flags,u16 d, u16 fill, u8 s); +#pragma aux shld_word_asm = \ + "push [edi]" \ + "popf" \ + "shld ax,dx,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [dx] [cl] \ + value [ax] \ + modify exact [ax dx cl]; + +u32 shld_long_asm(u32 *flags,u32 d, u32 fill, u8 s); +#pragma aux shld_long_asm = \ + "push [edi]" \ + "popf" \ + "shld eax,edx,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [edx] [cl] \ + value [eax] \ + modify exact [eax edx cl]; + +u16 shrd_word_asm(u32 *flags,u16 d, u16 fill, u8 s); +#pragma aux shrd_word_asm = \ + "push [edi]" \ + "popf" \ + "shrd ax,dx,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [dx] [cl] \ + value [ax] \ + modify exact [ax dx cl]; + +u32 shrd_long_asm(u32 *flags,u32 d, u32 fill, u8 s); +#pragma aux shrd_long_asm = \ + "push [edi]" \ + "popf" \ + "shrd eax,edx,cl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [edx] [cl] \ + value [eax] \ + modify exact [eax edx cl]; + +u8 sbb_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux sbb_byte_asm = \ + "push [edi]" \ + "popf" \ + "sbb al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 sbb_word_asm(u32 *flags,u16 d, u16 s); +#pragma aux sbb_word_asm = \ + "push [edi]" \ + "popf" \ + "sbb ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 sbb_long_asm(u32 *flags,u32 d, u32 s); +#pragma aux sbb_long_asm = \ + "push [edi]" \ + "popf" \ + "sbb eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +u8 sub_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux sub_byte_asm = \ + "push [edi]" \ + "popf" \ + "sub al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 sub_word_asm(u32 *flags,u16 d, u16 s); +#pragma aux sub_word_asm = \ + "push [edi]" \ + "popf" \ + "sub ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 sub_long_asm(u32 *flags,u32 d, u32 s); +#pragma aux sub_long_asm = \ + "push [edi]" \ + "popf" \ + "sub eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +void test_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux test_byte_asm = \ + "push [edi]" \ + "popf" \ + "test al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + modify exact [al bl]; + +void test_word_asm(u32 *flags,u16 d, u16 s); +#pragma aux test_word_asm = \ + "push [edi]" \ + "popf" \ + "test ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + modify exact [ax bx]; + +void test_long_asm(u32 *flags,u32 d, u32 s); +#pragma aux test_long_asm = \ + "push [edi]" \ + "popf" \ + "test eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + modify exact [eax ebx]; + +u8 xor_byte_asm(u32 *flags,u8 d, u8 s); +#pragma aux xor_byte_asm = \ + "push [edi]" \ + "popf" \ + "xor al,bl" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [al] [bl] \ + value [al] \ + modify exact [al bl]; + +u16 xor_word_asm(u32 *flags,u16 d, u16 s); +#pragma aux xor_word_asm = \ + "push [edi]" \ + "popf" \ + "xor ax,bx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [ax] [bx] \ + value [ax] \ + modify exact [ax bx]; + +u32 xor_long_asm(u32 *flags,u32 d, u32 s); +#pragma aux xor_long_asm = \ + "push [edi]" \ + "popf" \ + "xor eax,ebx" \ + "pushf" \ + "pop [edi]" \ + parm [edi] [eax] [ebx] \ + value [eax] \ + modify exact [eax ebx]; + +void imul_byte_asm(u32 *flags,u16 *ax,u8 d,u8 s); +#pragma aux imul_byte_asm = \ + "push [edi]" \ + "popf" \ + "imul bl" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + parm [edi] [esi] [al] [bl] \ + modify exact [esi ax bl]; + +void imul_word_asm(u32 *flags,u16 *ax,u16 *dx,u16 d,u16 s); +#pragma aux imul_word_asm = \ + "push [edi]" \ + "popf" \ + "imul bx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + "mov [ecx],dx" \ + parm [edi] [esi] [ecx] [ax] [bx]\ + modify exact [esi edi ax bx dx]; + +void imul_long_asm(u32 *flags,u32 *eax,u32 *edx,u32 d,u32 s); +#pragma aux imul_long_asm = \ + "push [edi]" \ + "popf" \ + "imul ebx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],eax" \ + "mov [ecx],edx" \ + parm [edi] [esi] [ecx] [eax] [ebx] \ + modify exact [esi edi eax ebx edx]; + +void mul_byte_asm(u32 *flags,u16 *ax,u8 d,u8 s); +#pragma aux mul_byte_asm = \ + "push [edi]" \ + "popf" \ + "mul bl" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + parm [edi] [esi] [al] [bl] \ + modify exact [esi ax bl]; + +void mul_word_asm(u32 *flags,u16 *ax,u16 *dx,u16 d,u16 s); +#pragma aux mul_word_asm = \ + "push [edi]" \ + "popf" \ + "mul bx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + "mov [ecx],dx" \ + parm [edi] [esi] [ecx] [ax] [bx]\ + modify exact [esi edi ax bx dx]; + +void mul_long_asm(u32 *flags,u32 *eax,u32 *edx,u32 d,u32 s); +#pragma aux mul_long_asm = \ + "push [edi]" \ + "popf" \ + "mul ebx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],eax" \ + "mov [ecx],edx" \ + parm [edi] [esi] [ecx] [eax] [ebx] \ + modify exact [esi edi eax ebx edx]; + +void idiv_byte_asm(u32 *flags,u8 *al,u8 *ah,u16 d,u8 s); +#pragma aux idiv_byte_asm = \ + "push [edi]" \ + "popf" \ + "idiv bl" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],al" \ + "mov [ecx],ah" \ + parm [edi] [esi] [ecx] [ax] [bl]\ + modify exact [esi edi ax bl]; + +void idiv_word_asm(u32 *flags,u16 *ax,u16 *dx,u16 dlo,u16 dhi,u16 s); +#pragma aux idiv_word_asm = \ + "push [edi]" \ + "popf" \ + "idiv bx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + "mov [ecx],dx" \ + parm [edi] [esi] [ecx] [ax] [dx] [bx]\ + modify exact [esi edi ax dx bx]; + +void idiv_long_asm(u32 *flags,u32 *eax,u32 *edx,u32 dlo,u32 dhi,u32 s); +#pragma aux idiv_long_asm = \ + "push [edi]" \ + "popf" \ + "idiv ebx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],eax" \ + "mov [ecx],edx" \ + parm [edi] [esi] [ecx] [eax] [edx] [ebx]\ + modify exact [esi edi eax edx ebx]; + +void div_byte_asm(u32 *flags,u8 *al,u8 *ah,u16 d,u8 s); +#pragma aux div_byte_asm = \ + "push [edi]" \ + "popf" \ + "div bl" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],al" \ + "mov [ecx],ah" \ + parm [edi] [esi] [ecx] [ax] [bl]\ + modify exact [esi edi ax bl]; + +void div_word_asm(u32 *flags,u16 *ax,u16 *dx,u16 dlo,u16 dhi,u16 s); +#pragma aux div_word_asm = \ + "push [edi]" \ + "popf" \ + "div bx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],ax" \ + "mov [ecx],dx" \ + parm [edi] [esi] [ecx] [ax] [dx] [bx]\ + modify exact [esi edi ax dx bx]; + +void div_long_asm(u32 *flags,u32 *eax,u32 *edx,u32 dlo,u32 dhi,u32 s); +#pragma aux div_long_asm = \ + "push [edi]" \ + "popf" \ + "div ebx" \ + "pushf" \ + "pop [edi]" \ + "mov [esi],eax" \ + "mov [ecx],edx" \ + parm [edi] [esi] [ecx] [eax] [edx] [ebx]\ + modify exact [esi edi eax edx ebx]; + +#endif + +#endif /* __X86EMU_PRIM_ASM_H */ diff --git a/src/device/oprom/x86emu/prim_ops.c b/src/device/oprom/x86emu/prim_ops.c new file mode 100644 index 0000000000..20e75978e5 --- /dev/null +++ b/src/device/oprom/x86emu/prim_ops.c @@ -0,0 +1,2496 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1991-2004 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file contains the code to implement the primitive +* machine operations used by the emulation code in ops.c +* +* Carry Chain Calculation +* +* This represents a somewhat expensive calculation which is +* apparently required to emulate the setting of the OF and AF flag. +* The latter is not so important, but the former is. The overflow +* flag is the XOR of the top two bits of the carry chain for an +* addition (similar for subtraction). Since we do not want to +* simulate the addition in a bitwise manner, we try to calculate the +* carry chain given the two operands and the result. +* +* So, given the following table, which represents the addition of two +* bits, we can derive a formula for the carry chain. +* +* a b cin r cout +* 0 0 0 0 0 +* 0 0 1 1 0 +* 0 1 0 1 0 +* 0 1 1 0 1 +* 1 0 0 1 0 +* 1 0 1 0 1 +* 1 1 0 0 1 +* 1 1 1 1 1 +* +* Construction of table for cout: +* +* ab +* r \ 00 01 11 10 +* |------------------ +* 0 | 0 1 1 1 +* 1 | 0 0 1 0 +* +* By inspection, one gets: cc = ab + r'(a + b) +* +* That represents alot of operations, but NO CHOICE.... +* +* Borrow Chain Calculation. +* +* The following table represents the subtraction of two bits, from +* which we can derive a formula for the borrow chain. +* +* a b bin r bout +* 0 0 0 0 0 +* 0 0 1 1 1 +* 0 1 0 1 1 +* 0 1 1 0 1 +* 1 0 0 1 0 +* 1 0 1 0 0 +* 1 1 0 0 0 +* 1 1 1 1 1 +* +* Construction of table for cout: +* +* ab +* r \ 00 01 11 10 +* |------------------ +* 0 | 0 1 0 0 +* 1 | 1 1 1 0 +* +* By inspection, one gets: bc = a'b + r(a' + b) +* +****************************************************************************/ + +#define PRIM_OPS_NO_REDEFINE_ASM +#include "x86emui.h" + +#define abs(x) ({ \ + int __x = (x); \ + (__x < 0) ? -__x : __x; \ + }) + +#define labs(x) ({ \ + long __x = (x); \ + (__x < 0) ? -__x : __x; \ + }) + +/*------------------------- Global Variables ------------------------------*/ + +static u32 x86emu_parity_tab[8] = +{ + 0x96696996, + 0x69969669, + 0x69969669, + 0x96696996, + 0x69969669, + 0x96696996, + 0x96696996, + 0x69969669, +}; + +#define PARITY(x) (((x86emu_parity_tab[(x) / 32] >> ((x) % 32)) & 1) == 0) +#define XOR2(x) (((x) ^ ((x)>>1)) & 0x1) + +/*----------------------------- Implementation ----------------------------*/ + + +/*--------- Side effects helper functions -------*/ + +/**************************************************************************** +REMARKS: +implements side efects for byte operations that don't overflow +****************************************************************************/ + +static void set_parity_flag(u32 res) +{ + CONDITIONAL_SET_FLAG(PARITY(res & 0xFF), F_PF); +} + +static void set_szp_flags_8(u8 res) +{ + CONDITIONAL_SET_FLAG(res & 0x80, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + set_parity_flag(res); +} + +static void set_szp_flags_16(u16 res) +{ + CONDITIONAL_SET_FLAG(res & 0x8000, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + set_parity_flag(res); +} + +static void set_szp_flags_32(u32 res) +{ + CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF); + CONDITIONAL_SET_FLAG(res == 0, F_ZF); + set_parity_flag(res); +} + +static void no_carry_byte_side_eff(u8 res) +{ + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + set_szp_flags_8(res); +} + +static void no_carry_word_side_eff(u16 res) +{ + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + set_szp_flags_16(res); +} + +static void no_carry_long_side_eff(u32 res) +{ + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + set_szp_flags_32(res); +} + +static void calc_carry_chain(int bits, u32 d, u32 s, u32 res, int set_carry) +{ + u32 cc; + + cc = (s & d) | ((~res) & (s | d)); + CONDITIONAL_SET_FLAG(XOR2(cc >> (bits - 2)), F_OF); + CONDITIONAL_SET_FLAG(cc & 0x8, F_AF); + if (set_carry) { + CONDITIONAL_SET_FLAG(res & (1 << bits), F_CF); + } +} + +static void calc_borrow_chain(int bits, u32 d, u32 s, u32 res, int set_carry) +{ + u32 bc; + + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(XOR2(bc >> (bits - 2)), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + if (set_carry) { + CONDITIONAL_SET_FLAG(bc & (1 << (bits - 1)), F_CF); + } +} + +/**************************************************************************** +REMARKS: +Implements the AAA instruction and side effects. +****************************************************************************/ +u16 aaa_word(u16 d) +{ + u16 res; + if ((d & 0xf) > 0x9 || ACCESS_FLAG(F_AF)) { + d += 0x6; + d += 0x100; + SET_FLAG(F_AF); + SET_FLAG(F_CF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + } + res = (u16)(d & 0xFF0F); + set_szp_flags_16(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AAA instruction and side effects. +****************************************************************************/ +u16 aas_word(u16 d) +{ + u16 res; + if ((d & 0xf) > 0x9 || ACCESS_FLAG(F_AF)) { + d -= 0x6; + d -= 0x100; + SET_FLAG(F_AF); + SET_FLAG(F_CF); + } else { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + } + res = (u16)(d & 0xFF0F); + set_szp_flags_16(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AAD instruction and side effects. +****************************************************************************/ +u16 aad_word(u16 d) +{ + u16 l; + u8 hb, lb; + + hb = (u8)((d >> 8) & 0xff); + lb = (u8)((d & 0xff)); + l = (u16)((lb + 10 * hb) & 0xFF); + + no_carry_byte_side_eff(l & 0xFF); + return l; +} + +/**************************************************************************** +REMARKS: +Implements the AAM instruction and side effects. +****************************************************************************/ +u16 aam_word(u8 d) +{ + u16 h, l; + + h = (u16)(d / 10); + l = (u16)(d % 10); + l |= (u16)(h << 8); + + no_carry_byte_side_eff(l & 0xFF); + return l; +} + +/**************************************************************************** +REMARKS: +Implements the ADC instruction and side effects. +****************************************************************************/ +u8 adc_byte(u8 d, u8 s) +{ + u32 res; /* all operands in native machine order */ + + res = d + s; + if (ACCESS_FLAG(F_CF)) res++; + + set_szp_flags_8(res); + calc_carry_chain(8,s,d,res,1); + + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the ADC instruction and side effects. +****************************************************************************/ +u16 adc_word(u16 d, u16 s) +{ + u32 res; /* all operands in native machine order */ + + res = d + s; + if (ACCESS_FLAG(F_CF)) + res++; + + set_szp_flags_16((u16)res); + calc_carry_chain(16,s,d,res,1); + + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the ADC instruction and side effects. +****************************************************************************/ +u32 adc_long(u32 d, u32 s) +{ + u32 lo; /* all operands in native machine order */ + u32 hi; + u32 res; + + lo = (d & 0xFFFF) + (s & 0xFFFF); + res = d + s; + + if (ACCESS_FLAG(F_CF)) { + lo++; + res++; + } + + hi = (lo >> 16) + (d >> 16) + (s >> 16); + + set_szp_flags_32(res); + calc_carry_chain(32,s,d,res,0); + + CONDITIONAL_SET_FLAG(hi & 0x10000, F_CF); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the ADD instruction and side effects. +****************************************************************************/ +u8 add_byte(u8 d, u8 s) +{ + u32 res; /* all operands in native machine order */ + + res = d + s; + set_szp_flags_8((u8)res); + calc_carry_chain(8,s,d,res,1); + + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the ADD instruction and side effects. +****************************************************************************/ +u16 add_word(u16 d, u16 s) +{ + u32 res; /* all operands in native machine order */ + + res = d + s; + set_szp_flags_16((u16)res); + calc_carry_chain(16,s,d,res,1); + + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the ADD instruction and side effects. +****************************************************************************/ +u32 add_long(u32 d, u32 s) +{ + u32 res; + + res = d + s; + set_szp_flags_32(res); + calc_carry_chain(32,s,d,res,0); + + CONDITIONAL_SET_FLAG(res < d || res < s, F_CF); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AND instruction and side effects. +****************************************************************************/ +u8 and_byte(u8 d, u8 s) +{ + u8 res; /* all operands in native machine order */ + + res = d & s; + + no_carry_byte_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AND instruction and side effects. +****************************************************************************/ +u16 and_word(u16 d, u16 s) +{ + u16 res; /* all operands in native machine order */ + + res = d & s; + + no_carry_word_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the AND instruction and side effects. +****************************************************************************/ +u32 and_long(u32 d, u32 s) +{ + u32 res; /* all operands in native machine order */ + + res = d & s; + no_carry_long_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the CMP instruction and side effects. +****************************************************************************/ +u8 cmp_byte(u8 d, u8 s) +{ + u32 res; /* all operands in native machine order */ + + res = d - s; + set_szp_flags_8((u8)res); + calc_borrow_chain(8, d, s, res, 1); + + return d; +} + +/**************************************************************************** +REMARKS: +Implements the CMP instruction and side effects. +****************************************************************************/ +u16 cmp_word(u16 d, u16 s) +{ + u32 res; /* all operands in native machine order */ + + res = d - s; + set_szp_flags_16((u16)res); + calc_borrow_chain(16, d, s, res, 1); + + return d; +} + +/**************************************************************************** +REMARKS: +Implements the CMP instruction and side effects. +****************************************************************************/ +u32 cmp_long(u32 d, u32 s) +{ + u32 res; /* all operands in native machine order */ + + res = d - s; + set_szp_flags_32(res); + calc_borrow_chain(32, d, s, res, 1); + + return d; +} + +/**************************************************************************** +REMARKS: +Implements the DAA instruction and side effects. +****************************************************************************/ +u8 daa_byte(u8 d) +{ + u32 res = d; + if ((d & 0xf) > 9 || ACCESS_FLAG(F_AF)) { + res += 6; + SET_FLAG(F_AF); + } + if (res > 0x9F || ACCESS_FLAG(F_CF)) { + res += 0x60; + SET_FLAG(F_CF); + } + set_szp_flags_8((u8)res); + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the DAS instruction and side effects. +****************************************************************************/ +u8 das_byte(u8 d) +{ + if ((d & 0xf) > 9 || ACCESS_FLAG(F_AF)) { + d -= 6; + SET_FLAG(F_AF); + } + if (d > 0x9F || ACCESS_FLAG(F_CF)) { + d -= 0x60; + SET_FLAG(F_CF); + } + set_szp_flags_8(d); + return d; +} + +/**************************************************************************** +REMARKS: +Implements the DEC instruction and side effects. +****************************************************************************/ +u8 dec_byte(u8 d) +{ + u32 res; /* all operands in native machine order */ + + res = d - 1; + set_szp_flags_8((u8)res); + calc_borrow_chain(8, d, 1, res, 0); + + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the DEC instruction and side effects. +****************************************************************************/ +u16 dec_word(u16 d) +{ + u32 res; /* all operands in native machine order */ + + res = d - 1; + set_szp_flags_16((u16)res); + calc_borrow_chain(16, d, 1, res, 0); + + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the DEC instruction and side effects. +****************************************************************************/ +u32 dec_long(u32 d) +{ + u32 res; /* all operands in native machine order */ + + res = d - 1; + + set_szp_flags_32(res); + calc_borrow_chain(32, d, 1, res, 0); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the INC instruction and side effects. +****************************************************************************/ +u8 inc_byte(u8 d) +{ + u32 res; /* all operands in native machine order */ + + res = d + 1; + set_szp_flags_8((u8)res); + calc_carry_chain(8, d, 1, res, 0); + + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the INC instruction and side effects. +****************************************************************************/ +u16 inc_word(u16 d) +{ + u32 res; /* all operands in native machine order */ + + res = d + 1; + set_szp_flags_16((u16)res); + calc_carry_chain(16, d, 1, res, 0); + + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the INC instruction and side effects. +****************************************************************************/ +u32 inc_long(u32 d) +{ + u32 res; /* all operands in native machine order */ + + res = d + 1; + set_szp_flags_32(res); + calc_carry_chain(32, d, 1, res, 0); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u8 or_byte(u8 d, u8 s) +{ + u8 res; /* all operands in native machine order */ + + res = d | s; + no_carry_byte_side_eff(res); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u16 or_word(u16 d, u16 s) +{ + u16 res; /* all operands in native machine order */ + + res = d | s; + no_carry_word_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u32 or_long(u32 d, u32 s) +{ + u32 res; /* all operands in native machine order */ + + res = d | s; + no_carry_long_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u8 neg_byte(u8 s) +{ + u8 res; + + CONDITIONAL_SET_FLAG(s != 0, F_CF); + res = (u8)-s; + set_szp_flags_8(res); + calc_borrow_chain(8, 0, s, res, 0); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u16 neg_word(u16 s) +{ + u16 res; + + CONDITIONAL_SET_FLAG(s != 0, F_CF); + res = (u16)-s; + set_szp_flags_16((u16)res); + calc_borrow_chain(16, 0, s, res, 0); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the OR instruction and side effects. +****************************************************************************/ +u32 neg_long(u32 s) +{ + u32 res; + + CONDITIONAL_SET_FLAG(s != 0, F_CF); + res = (u32)-s; + set_szp_flags_32(res); + calc_borrow_chain(32, 0, s, res, 0); + + return res; +} + +/**************************************************************************** +REMARKS: +Implements the NOT instruction and side effects. +****************************************************************************/ +u8 not_byte(u8 s) +{ + return ~s; +} + +/**************************************************************************** +REMARKS: +Implements the NOT instruction and side effects. +****************************************************************************/ +u16 not_word(u16 s) +{ + return ~s; +} + +/**************************************************************************** +REMARKS: +Implements the NOT instruction and side effects. +****************************************************************************/ +u32 not_long(u32 s) +{ + return ~s; +} + +/**************************************************************************** +REMARKS: +Implements the RCL instruction and side effects. +****************************************************************************/ +u8 rcl_byte(u8 d, u8 s) +{ + unsigned int res, cnt, mask, cf; + + /* s is the rotate distance. It varies from 0 - 8. */ + /* have + + CF B_7 B_6 B_5 B_4 B_3 B_2 B_1 B_0 + + want to rotate through the carry by "s" bits. We could + loop, but that's inefficient. So the width is 9, + and we split into three parts: + + The new carry flag (was B_n) + the stuff in B_n-1 .. B_0 + the stuff in B_7 .. B_n+1 + + The new rotate is done mod 9, and given this, + for a rotation of n bits (mod 9) the new carry flag is + then located n bits from the MSB. The low part is + then shifted up cnt bits, and the high part is or'd + in. Using CAPS for new values, and lowercase for the + original values, this can be expressed as: + + IF n > 0 + 1) CF <- b_(8-n) + 2) B_(7) .. B_(n) <- b_(8-(n+1)) .. b_0 + 3) B_(n-1) <- cf + 4) B_(n-2) .. B_0 <- b_7 .. b_(8-(n-1)) + */ + res = d; + if ((cnt = s % 9) != 0) { + /* extract the new CARRY FLAG. */ + /* CF <- b_(8-n) */ + cf = (d >> (8 - cnt)) & 0x1; + + /* get the low stuff which rotated + into the range B_7 .. B_cnt */ + /* B_(7) .. B_(n) <- b_(8-(n+1)) .. b_0 */ + /* note that the right hand side done by the mask */ + res = (d << cnt) & 0xff; + + /* now the high stuff which rotated around + into the positions B_cnt-2 .. B_0 */ + /* B_(n-2) .. B_0 <- b_7 .. b_(8-(n-1)) */ + /* shift it downward, 7-(n-2) = 9-n positions. + and mask off the result before or'ing in. + */ + mask = (1 << (cnt - 1)) - 1; + res |= (d >> (9 - cnt)) & mask; + + /* if the carry flag was set, or it in. */ + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + /* B_(n-1) <- cf */ + res |= 1 << (cnt - 1); + } + /* set the new carry flag, based on the variable "cf" */ + CONDITIONAL_SET_FLAG(cf, F_CF); + /* OVERFLOW is set *IFF* cnt==1, then it is the + xor of CF and the most significant bit. Blecck. */ + /* parenthesized this expression since it appears to + be causing OF to be misset */ + CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 6) & 0x2)), + F_OF); + + } + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the RCL instruction and side effects. +****************************************************************************/ +u16 rcl_word(u16 d, u8 s) +{ + unsigned int res, cnt, mask, cf; + + res = d; + if ((cnt = s % 17) != 0) { + cf = (d >> (16 - cnt)) & 0x1; + res = (d << cnt) & 0xffff; + mask = (1 << (cnt - 1)) - 1; + res |= (d >> (17 - cnt)) & mask; + if (ACCESS_FLAG(F_CF)) { + res |= 1 << (cnt - 1); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 14) & 0x2)), + F_OF); + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the RCL instruction and side effects. +****************************************************************************/ +u32 rcl_long(u32 d, u8 s) +{ + u32 res, cnt, mask, cf; + + res = d; + if ((cnt = s % 33) != 0) { + cf = (d >> (32 - cnt)) & 0x1; + res = (d << cnt) & 0xffffffff; + mask = (1 << (cnt - 1)) - 1; + res |= (d >> (33 - cnt)) & mask; + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + res |= 1 << (cnt - 1); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 30) & 0x2)), + F_OF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the RCR instruction and side effects. +****************************************************************************/ +u8 rcr_byte(u8 d, u8 s) +{ + u32 res, cnt; + u32 mask, cf, ocf = 0; + + /* rotate right through carry */ + /* + s is the rotate distance. It varies from 0 - 8. + d is the byte object rotated. + + have + + CF B_7 B_6 B_5 B_4 B_3 B_2 B_1 B_0 + + The new rotate is done mod 9, and given this, + for a rotation of n bits (mod 9) the new carry flag is + then located n bits from the LSB. The low part is + then shifted up cnt bits, and the high part is or'd + in. Using CAPS for new values, and lowercase for the + original values, this can be expressed as: + + IF n > 0 + 1) CF <- b_(n-1) + 2) B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) + 3) B_(8-n) <- cf + 4) B_(7) .. B_(8-(n-1)) <- b_(n-2) .. b_(0) + */ + res = d; + if ((cnt = s % 9) != 0) { + /* extract the new CARRY FLAG. */ + /* CF <- b_(n-1) */ + if (cnt == 1) { + cf = d & 0x1; + /* note hackery here. Access_flag(..) evaluates to either + 0 if flag not set + non-zero if flag is set. + doing access_flag(..) != 0 casts that into either + 0..1 in any representation of the flags register + (i.e. packed bit array or unpacked.) + */ + ocf = ACCESS_FLAG(F_CF) != 0; + } else + cf = (d >> (cnt - 1)) & 0x1; + + /* B_(8-(n+1)) .. B_(0) <- b_(7) .. b_n */ + /* note that the right hand side done by the mask + This is effectively done by shifting the + object to the right. The result must be masked, + in case the object came in and was treated + as a negative number. Needed??? */ + + mask = (1 << (8 - cnt)) - 1; + res = (d >> cnt) & mask; + + /* now the high stuff which rotated around + into the positions B_cnt-2 .. B_0 */ + /* B_(7) .. B_(8-(n-1)) <- b_(n-2) .. b_(0) */ + /* shift it downward, 7-(n-2) = 9-n positions. + and mask off the result before or'ing in. + */ + res |= (d << (9 - cnt)); + + /* if the carry flag was set, or it in. */ + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + /* B_(8-n) <- cf */ + res |= 1 << (8 - cnt); + } + /* set the new carry flag, based on the variable "cf" */ + CONDITIONAL_SET_FLAG(cf, F_CF); + /* OVERFLOW is set *IFF* cnt==1, then it is the + xor of CF and the most significant bit. Blecck. */ + /* parenthesized... */ + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 6) & 0x2)), + F_OF); + } + } + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the RCR instruction and side effects. +****************************************************************************/ +u16 rcr_word(u16 d, u8 s) +{ + u32 res, cnt; + u32 mask, cf, ocf = 0; + + /* rotate right through carry */ + res = d; + if ((cnt = s % 17) != 0) { + if (cnt == 1) { + cf = d & 0x1; + ocf = ACCESS_FLAG(F_CF) != 0; + } else + cf = (d >> (cnt - 1)) & 0x1; + mask = (1 << (16 - cnt)) - 1; + res = (d >> cnt) & mask; + res |= (d << (17 - cnt)); + if (ACCESS_FLAG(F_CF)) { + res |= 1 << (16 - cnt); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 14) & 0x2)), + F_OF); + } + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the RCR instruction and side effects. +****************************************************************************/ +u32 rcr_long(u32 d, u8 s) +{ + u32 res, cnt; + u32 mask, cf, ocf = 0; + + /* rotate right through carry */ + res = d; + if ((cnt = s % 33) != 0) { + if (cnt == 1) { + cf = d & 0x1; + ocf = ACCESS_FLAG(F_CF) != 0; + } else + cf = (d >> (cnt - 1)) & 0x1; + mask = (1 << (32 - cnt)) - 1; + res = (d >> cnt) & mask; + if (cnt != 1) + res |= (d << (33 - cnt)); + if (ACCESS_FLAG(F_CF)) { /* carry flag is set */ + res |= 1 << (32 - cnt); + } + CONDITIONAL_SET_FLAG(cf, F_CF); + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 30) & 0x2)), + F_OF); + } + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the ROL instruction and side effects. +****************************************************************************/ +u8 rol_byte(u8 d, u8 s) +{ + unsigned int res, cnt, mask; + + /* rotate left */ + /* + s is the rotate distance. It varies from 0 - 8. + d is the byte object rotated. + + have + + CF B_7 ... B_0 + + The new rotate is done mod 8. + Much simpler than the "rcl" or "rcr" operations. + + IF n > 0 + 1) B_(7) .. B_(n) <- b_(8-(n+1)) .. b_(0) + 2) B_(n-1) .. B_(0) <- b_(7) .. b_(8-n) + */ + res = d; + if ((cnt = s % 8) != 0) { + /* B_(7) .. B_(n) <- b_(8-(n+1)) .. b_(0) */ + res = (d << cnt); + + /* B_(n-1) .. B_(0) <- b_(7) .. b_(8-n) */ + mask = (1 << cnt) - 1; + res |= (d >> (8 - cnt)) & mask; + + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + /* OVERFLOW is set *IFF* s==1, then it is the + xor of CF and the most significant bit. Blecck. */ + CONDITIONAL_SET_FLAG(s == 1 && + XOR2((res & 0x1) + ((res >> 6) & 0x2)), + F_OF); + } if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + } + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the ROL instruction and side effects. +****************************************************************************/ +u16 rol_word(u16 d, u8 s) +{ + unsigned int res, cnt, mask; + + res = d; + if ((cnt = s % 16) != 0) { + res = (d << cnt); + mask = (1 << cnt) - 1; + res |= (d >> (16 - cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && + XOR2((res & 0x1) + ((res >> 14) & 0x2)), + F_OF); + } if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the ROL instruction and side effects. +****************************************************************************/ +u32 rol_long(u32 d, u8 s) +{ + u32 res, cnt, mask; + + res = d; + if ((cnt = s % 32) != 0) { + res = (d << cnt); + mask = (1 << cnt) - 1; + res |= (d >> (32 - cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && + XOR2((res & 0x1) + ((res >> 30) & 0x2)), + F_OF); + } if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x1, F_CF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the ROR instruction and side effects. +****************************************************************************/ +u8 ror_byte(u8 d, u8 s) +{ + unsigned int res, cnt, mask; + + /* rotate right */ + /* + s is the rotate distance. It varies from 0 - 8. + d is the byte object rotated. + + have + + B_7 ... B_0 + + The rotate is done mod 8. + + IF n > 0 + 1) B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) + 2) B_(7) .. B_(8-n) <- b_(n-1) .. b_(0) + */ + res = d; + if ((cnt = s % 8) != 0) { /* not a typo, do nada if cnt==0 */ + /* B_(7) .. B_(8-n) <- b_(n-1) .. b_(0) */ + res = (d << (8 - cnt)); + + /* B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) */ + mask = (1 << (8 - cnt)) - 1; + res |= (d >> (cnt)) & mask; + + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x80, F_CF); + /* OVERFLOW is set *IFF* s==1, then it is the + xor of the two most significant bits. Blecck. */ + CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 6), F_OF); + } else if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x80, F_CF); + } + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the ROR instruction and side effects. +****************************************************************************/ +u16 ror_word(u16 d, u8 s) +{ + unsigned int res, cnt, mask; + + res = d; + if ((cnt = s % 16) != 0) { + res = (d << (16 - cnt)); + mask = (1 << (16 - cnt)) - 1; + res |= (d >> (cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x8000, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 14), F_OF); + } else if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x8000, F_CF); + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the ROR instruction and side effects. +****************************************************************************/ +u32 ror_long(u32 d, u8 s) +{ + u32 res, cnt, mask; + + res = d; + if ((cnt = s % 32) != 0) { + res = (d << (32 - cnt)); + mask = (1 << (32 - cnt)) - 1; + res |= (d >> (cnt)) & mask; + CONDITIONAL_SET_FLAG(res & 0x80000000, F_CF); + CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 30), F_OF); + } else if (s != 0) { + /* set the new carry flag, Note that it is the low order + bit of the result!!! */ + CONDITIONAL_SET_FLAG(res & 0x80000000, F_CF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SHL instruction and side effects. +****************************************************************************/ +u8 shl_byte(u8 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 8) { + cnt = s % 8; + + /* last bit shifted out goes into carry flag */ + if (cnt > 0) { + res = d << cnt; + cf = d & (1 << (8 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_8((u8)res); + } else { + res = (u8) d; + } + + if (cnt == 1) { + /* Needs simplification. */ + CONDITIONAL_SET_FLAG( + (((res & 0x80) == 0x80) ^ + (ACCESS_FLAG(F_CF) != 0)), + /* was (M.x86.R_FLG&F_CF)==F_CF)), */ + F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the SHL instruction and side effects. +****************************************************************************/ +u16 shl_word(u16 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 16) { + cnt = s % 16; + if (cnt > 0) { + res = d << cnt; + cf = d & (1 << (16 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_16((u16)res); + } else { + res = (u16) d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG( + (((res & 0x8000) == 0x8000) ^ + (ACCESS_FLAG(F_CF) != 0)), + F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x8000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the SHL instruction and side effects. +****************************************************************************/ +u32 shl_long(u32 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 32) { + cnt = s % 32; + if (cnt > 0) { + res = d << cnt; + cf = d & (1 << (32 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_32((u32)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG((((res & 0x80000000) == 0x80000000) ^ + (ACCESS_FLAG(F_CF) != 0)), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80000000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SHR instruction and side effects. +****************************************************************************/ +u8 shr_byte(u8 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 8) { + cnt = s % 8; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = d >> cnt; + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_8((u8)res); + } else { + res = (u8) d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 6), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CONDITIONAL_SET_FLAG((d >> (s-1)) & 0x1, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the SHR instruction and side effects. +****************************************************************************/ +u16 shr_word(u16 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 16) { + cnt = s % 16; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = d >> cnt; + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_16((u16)res); + } else { + res = d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 14), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the SHR instruction and side effects. +****************************************************************************/ +u32 shr_long(u32 d, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 32) { + cnt = s % 32; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = d >> cnt; + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_32((u32)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 30), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SAR instruction and side effects. +****************************************************************************/ +u8 sar_byte(u8 d, u8 s) +{ + unsigned int cnt, res, cf, mask, sf; + + res = d; + sf = d & 0x80; + cnt = s % 8; + if (cnt > 0 && cnt < 8) { + mask = (1 << (8 - cnt)) - 1; + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) & mask; + CONDITIONAL_SET_FLAG(cf, F_CF); + if (sf) { + res |= ~mask; + } + set_szp_flags_8((u8)res); + } else if (cnt >= 8) { + if (sf) { + res = 0xff; + SET_FLAG(F_CF); + CLEAR_FLAG(F_ZF); + SET_FLAG(F_SF); + SET_FLAG(F_PF); + } else { + res = 0; + CLEAR_FLAG(F_CF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + } + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the SAR instruction and side effects. +****************************************************************************/ +u16 sar_word(u16 d, u8 s) +{ + unsigned int cnt, res, cf, mask, sf; + + sf = d & 0x8000; + cnt = s % 16; + res = d; + if (cnt > 0 && cnt < 16) { + mask = (1 << (16 - cnt)) - 1; + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) & mask; + CONDITIONAL_SET_FLAG(cf, F_CF); + if (sf) { + res |= ~mask; + } + set_szp_flags_16((u16)res); + } else if (cnt >= 16) { + if (sf) { + res = 0xffff; + SET_FLAG(F_CF); + CLEAR_FLAG(F_ZF); + SET_FLAG(F_SF); + SET_FLAG(F_PF); + } else { + res = 0; + CLEAR_FLAG(F_CF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the SAR instruction and side effects. +****************************************************************************/ +u32 sar_long(u32 d, u8 s) +{ + u32 cnt, res, cf, mask, sf; + + sf = d & 0x80000000; + cnt = s % 32; + res = d; + if (cnt > 0 && cnt < 32) { + mask = (1 << (32 - cnt)) - 1; + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) & mask; + CONDITIONAL_SET_FLAG(cf, F_CF); + if (sf) { + res |= ~mask; + } + set_szp_flags_32(res); + } else if (cnt >= 32) { + if (sf) { + res = 0xffffffff; + SET_FLAG(F_CF); + CLEAR_FLAG(F_ZF); + SET_FLAG(F_SF); + SET_FLAG(F_PF); + } else { + res = 0; + CLEAR_FLAG(F_CF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SHLD instruction and side effects. +****************************************************************************/ +u16 shld_word (u16 d, u16 fill, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 16) { + cnt = s % 16; + if (cnt > 0) { + res = (d << cnt) | (fill >> (16-cnt)); + cf = d & (1 << (16 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_16((u16)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG((((res & 0x8000) == 0x8000) ^ + (ACCESS_FLAG(F_CF) != 0)), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x8000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the SHLD instruction and side effects. +****************************************************************************/ +u32 shld_long (u32 d, u32 fill, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 32) { + cnt = s % 32; + if (cnt > 0) { + res = (d << cnt) | (fill >> (32-cnt)); + cf = d & (1 << (32 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_32((u32)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG((((res & 0x80000000) == 0x80000000) ^ + (ACCESS_FLAG(F_CF) != 0)), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80000000, F_CF); + CLEAR_FLAG(F_OF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_PF); + SET_FLAG(F_ZF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SHRD instruction and side effects. +****************************************************************************/ +u16 shrd_word (u16 d, u16 fill, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 16) { + cnt = s % 16; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) | (fill << (16 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_16((u16)res); + } else { + res = d; + } + + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 14), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the SHRD instruction and side effects. +****************************************************************************/ +u32 shrd_long (u32 d, u32 fill, u8 s) +{ + unsigned int cnt, res, cf; + + if (s < 32) { + cnt = s % 32; + if (cnt > 0) { + cf = d & (1 << (cnt - 1)); + res = (d >> cnt) | (fill << (32 - cnt)); + CONDITIONAL_SET_FLAG(cf, F_CF); + set_szp_flags_32((u32)res); + } else { + res = d; + } + if (cnt == 1) { + CONDITIONAL_SET_FLAG(XOR2(res >> 30), F_OF); + } else { + CLEAR_FLAG(F_OF); + } + } else { + res = 0; + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + SET_FLAG(F_ZF); + CLEAR_FLAG(F_SF); + CLEAR_FLAG(F_PF); + } + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SBB instruction and side effects. +****************************************************************************/ +u8 sbb_byte(u8 d, u8 s) +{ + u32 res; /* all operands in native machine order */ + u32 bc; + + if (ACCESS_FLAG(F_CF)) + res = d - s - 1; + else + res = d - s; + set_szp_flags_8((u8)res); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x80, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 6), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the SBB instruction and side effects. +****************************************************************************/ +u16 sbb_word(u16 d, u16 s) +{ + u32 res; /* all operands in native machine order */ + u32 bc; + + if (ACCESS_FLAG(F_CF)) + res = d - s - 1; + else + res = d - s; + set_szp_flags_16((u16)res); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x8000, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 14), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the SBB instruction and side effects. +****************************************************************************/ +u32 sbb_long(u32 d, u32 s) +{ + u32 res; /* all operands in native machine order */ + u32 bc; + + if (ACCESS_FLAG(F_CF)) + res = d - s - 1; + else + res = d - s; + + set_szp_flags_32(res); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x80000000, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 30), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the SUB instruction and side effects. +****************************************************************************/ +u8 sub_byte(u8 d, u8 s) +{ + u32 res; /* all operands in native machine order */ + u32 bc; + + res = d - s; + set_szp_flags_8((u8)res); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x80, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 6), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return (u8)res; +} + +/**************************************************************************** +REMARKS: +Implements the SUB instruction and side effects. +****************************************************************************/ +u16 sub_word(u16 d, u16 s) +{ + u32 res; /* all operands in native machine order */ + u32 bc; + + res = d - s; + set_szp_flags_16((u16)res); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x8000, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 14), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return (u16)res; +} + +/**************************************************************************** +REMARKS: +Implements the SUB instruction and side effects. +****************************************************************************/ +u32 sub_long(u32 d, u32 s) +{ + u32 res; /* all operands in native machine order */ + u32 bc; + + res = d - s; + set_szp_flags_32(res); + + /* calculate the borrow chain. See note at top */ + bc = (res & (~d | s)) | (~d & s); + CONDITIONAL_SET_FLAG(bc & 0x80000000, F_CF); + CONDITIONAL_SET_FLAG(XOR2(bc >> 30), F_OF); + CONDITIONAL_SET_FLAG(bc & 0x8, F_AF); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the TEST instruction and side effects. +****************************************************************************/ +void test_byte(u8 d, u8 s) +{ + u32 res; /* all operands in native machine order */ + + res = d & s; + + CLEAR_FLAG(F_OF); + set_szp_flags_8((u8)res); + /* AF == dont care */ + CLEAR_FLAG(F_CF); +} + +/**************************************************************************** +REMARKS: +Implements the TEST instruction and side effects. +****************************************************************************/ +void test_word(u16 d, u16 s) +{ + u32 res; /* all operands in native machine order */ + + res = d & s; + + CLEAR_FLAG(F_OF); + set_szp_flags_16((u16)res); + /* AF == dont care */ + CLEAR_FLAG(F_CF); +} + +/**************************************************************************** +REMARKS: +Implements the TEST instruction and side effects. +****************************************************************************/ +void test_long(u32 d, u32 s) +{ + u32 res; /* all operands in native machine order */ + + res = d & s; + + CLEAR_FLAG(F_OF); + set_szp_flags_32(res); + /* AF == dont care */ + CLEAR_FLAG(F_CF); +} + +/**************************************************************************** +REMARKS: +Implements the XOR instruction and side effects. +****************************************************************************/ +u8 xor_byte(u8 d, u8 s) +{ + u8 res; /* all operands in native machine order */ + + res = d ^ s; + no_carry_byte_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the XOR instruction and side effects. +****************************************************************************/ +u16 xor_word(u16 d, u16 s) +{ + u16 res; /* all operands in native machine order */ + + res = d ^ s; + no_carry_word_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the XOR instruction and side effects. +****************************************************************************/ +u32 xor_long(u32 d, u32 s) +{ + u32 res; /* all operands in native machine order */ + + res = d ^ s; + no_carry_long_side_eff(res); + return res; +} + +/**************************************************************************** +REMARKS: +Implements the IMUL instruction and side effects. +****************************************************************************/ +void imul_byte(u8 s) +{ + s16 res = (s16)((s8)M.x86.R_AL * (s8)s); + + M.x86.R_AX = res; + if (((M.x86.R_AL & 0x80) == 0 && M.x86.R_AH == 0x00) || + ((M.x86.R_AL & 0x80) != 0 && M.x86.R_AH == 0xFF)) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the IMUL instruction and side effects. +****************************************************************************/ +void imul_word(u16 s) +{ + s32 res = (s16)M.x86.R_AX * (s16)s; + + M.x86.R_AX = (u16)res; + M.x86.R_DX = (u16)(res >> 16); + if (((M.x86.R_AX & 0x8000) == 0 && M.x86.R_DX == 0x0000) || + ((M.x86.R_AX & 0x8000) != 0 && M.x86.R_DX == 0xFFFF)) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the IMUL instruction and side effects. +****************************************************************************/ +void imul_long_direct(u32 *res_lo, u32* res_hi,u32 d, u32 s) +{ +#ifdef __HAS_LONG_LONG__ + s64 res = (s64)(s32)d * (s64)(s32)s; + + *res_lo = (u32)res; + *res_hi = (u32)(res >> 32); +#else + u32 d_lo,d_hi,d_sign; + u32 s_lo,s_hi,s_sign; + u32 rlo_lo,rlo_hi,rhi_lo; + + if ((d_sign = d & 0x80000000) != 0) + d = -d; + d_lo = d & 0xFFFF; + d_hi = d >> 16; + if ((s_sign = s & 0x80000000) != 0) + s = -s; + s_lo = s & 0xFFFF; + s_hi = s >> 16; + rlo_lo = d_lo * s_lo; + rlo_hi = (d_hi * s_lo + d_lo * s_hi) + (rlo_lo >> 16); + rhi_lo = d_hi * s_hi + (rlo_hi >> 16); + *res_lo = (rlo_hi << 16) | (rlo_lo & 0xFFFF); + *res_hi = rhi_lo; + if (d_sign != s_sign) { + d = ~*res_lo; + s = (((d & 0xFFFF) + 1) >> 16) + (d >> 16); + *res_lo = ~*res_lo+1; + *res_hi = ~*res_hi+(s >> 16); + } +#endif +} + +/**************************************************************************** +REMARKS: +Implements the IMUL instruction and side effects. +****************************************************************************/ +void imul_long(u32 s) +{ + imul_long_direct(&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,s); + if (((M.x86.R_EAX & 0x80000000) == 0 && M.x86.R_EDX == 0x00000000) || + ((M.x86.R_EAX & 0x80000000) != 0 && M.x86.R_EDX == 0xFFFFFFFF)) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the MUL instruction and side effects. +****************************************************************************/ +void mul_byte(u8 s) +{ + u16 res = (u16)(M.x86.R_AL * s); + + M.x86.R_AX = res; + if (M.x86.R_AH == 0) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the MUL instruction and side effects. +****************************************************************************/ +void mul_word(u16 s) +{ + u32 res = M.x86.R_AX * s; + + M.x86.R_AX = (u16)res; + M.x86.R_DX = (u16)(res >> 16); + if (M.x86.R_DX == 0) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the MUL instruction and side effects. +****************************************************************************/ +void mul_long(u32 s) +{ +#ifdef __HAS_LONG_LONG__ + u64 res = (u64)M.x86.R_EAX * s; + + M.x86.R_EAX = (u32)res; + M.x86.R_EDX = (u32)(res >> 32); +#else + u32 a,a_lo,a_hi; + u32 s_lo,s_hi; + u32 rlo_lo,rlo_hi,rhi_lo; + + a = M.x86.R_EAX; + a_lo = a & 0xFFFF; + a_hi = a >> 16; + s_lo = s & 0xFFFF; + s_hi = s >> 16; + rlo_lo = a_lo * s_lo; + rlo_hi = (a_hi * s_lo + a_lo * s_hi) + (rlo_lo >> 16); + rhi_lo = a_hi * s_hi + (rlo_hi >> 16); + M.x86.R_EAX = (rlo_hi << 16) | (rlo_lo & 0xFFFF); + M.x86.R_EDX = rhi_lo; +#endif + if (M.x86.R_EDX == 0) { + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_OF); + } else { + SET_FLAG(F_CF); + SET_FLAG(F_OF); + } +} + +/**************************************************************************** +REMARKS: +Implements the IDIV instruction and side effects. +****************************************************************************/ +void idiv_byte(u8 s) +{ + s32 dvd, div, mod; + + dvd = (s16)M.x86.R_AX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (s8)s; + mod = dvd % (s8)s; + if (abs(div) > 0x7f) { + x86emu_intr_raise(0); + return; + } + M.x86.R_AL = (s8) div; + M.x86.R_AH = (s8) mod; +} + +/**************************************************************************** +REMARKS: +Implements the IDIV instruction and side effects. +****************************************************************************/ +void idiv_word(u16 s) +{ + s32 dvd, div, mod; + + dvd = (((s32)M.x86.R_DX) << 16) | M.x86.R_AX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (s16)s; + mod = dvd % (s16)s; + if (abs(div) > 0x7fff) { + x86emu_intr_raise(0); + return; + } + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_SF); + CONDITIONAL_SET_FLAG(div == 0, F_ZF); + set_parity_flag(mod); + + M.x86.R_AX = (u16)div; + M.x86.R_DX = (u16)mod; +} + +/**************************************************************************** +REMARKS: +Implements the IDIV instruction and side effects. +****************************************************************************/ +void idiv_long(u32 s) +{ +#ifdef __HAS_LONG_LONG__ + s64 dvd, div, mod; + + dvd = (((s64)M.x86.R_EDX) << 32) | M.x86.R_EAX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (s32)s; + mod = dvd % (s32)s; + if (abs(div) > 0x7fffffff) { + x86emu_intr_raise(0); + return; + } +#else + s32 div = 0, mod; + s32 h_dvd = M.x86.R_EDX; + u32 l_dvd = M.x86.R_EAX; + u32 abs_s = s & 0x7FFFFFFF; + u32 abs_h_dvd = h_dvd & 0x7FFFFFFF; + u32 h_s = abs_s >> 1; + u32 l_s = abs_s << 31; + int counter = 31; + int carry; + + if (s == 0) { + x86emu_intr_raise(0); + return; + } + do { + div <<= 1; + carry = (l_dvd >= l_s) ? 0 : 1; + + if (abs_h_dvd < (h_s + carry)) { + h_s >>= 1; + l_s = abs_s << (--counter); + continue; + } else { + abs_h_dvd -= (h_s + carry); + l_dvd = carry ? ((0xFFFFFFFF - l_s) + l_dvd + 1) + : (l_dvd - l_s); + h_s >>= 1; + l_s = abs_s << (--counter); + div |= 1; + continue; + } + + } while (counter > -1); + /* overflow */ + if (abs_h_dvd || (l_dvd > abs_s)) { + x86emu_intr_raise(0); + return; + } + /* sign */ + div |= ((h_dvd & 0x10000000) ^ (s & 0x10000000)); + mod = l_dvd; + +#endif + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_ZF); + set_parity_flag(mod); + + M.x86.R_EAX = (u32)div; + M.x86.R_EDX = (u32)mod; +} + +/**************************************************************************** +REMARKS: +Implements the DIV instruction and side effects. +****************************************************************************/ +void div_byte(u8 s) +{ + u32 dvd, div, mod; + + dvd = M.x86.R_AX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (u8)s; + mod = dvd % (u8)s; + if (abs(div) > 0xff) { + x86emu_intr_raise(0); + return; + } + M.x86.R_AL = (u8)div; + M.x86.R_AH = (u8)mod; +} + +/**************************************************************************** +REMARKS: +Implements the DIV instruction and side effects. +****************************************************************************/ +void div_word(u16 s) +{ + u32 dvd, div, mod; + + dvd = (((u32)M.x86.R_DX) << 16) | M.x86.R_AX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (u16)s; + mod = dvd % (u16)s; + if (abs(div) > 0xffff) { + x86emu_intr_raise(0); + return; + } + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_SF); + CONDITIONAL_SET_FLAG(div == 0, F_ZF); + set_parity_flag(mod); + + M.x86.R_AX = (u16)div; + M.x86.R_DX = (u16)mod; +} + +/**************************************************************************** +REMARKS: +Implements the DIV instruction and side effects. +****************************************************************************/ +void div_long(u32 s) +{ +#ifdef __HAS_LONG_LONG__ + u64 dvd, div, mod; + + dvd = (((u64)M.x86.R_EDX) << 32) | M.x86.R_EAX; + if (s == 0) { + x86emu_intr_raise(0); + return; + } + div = dvd / (u32)s; + mod = dvd % (u32)s; + if (abs(div) > 0xffffffff) { + x86emu_intr_raise(0); + return; + } +#else + s32 div = 0, mod; + s32 h_dvd = M.x86.R_EDX; + u32 l_dvd = M.x86.R_EAX; + + u32 h_s = s; + u32 l_s = 0; + int counter = 32; + int carry; + + if (s == 0) { + x86emu_intr_raise(0); + return; + } + do { + div <<= 1; + carry = (l_dvd >= l_s) ? 0 : 1; + + if (h_dvd < (h_s + carry)) { + h_s >>= 1; + l_s = s << (--counter); + continue; + } else { + h_dvd -= (h_s + carry); + l_dvd = carry ? ((0xFFFFFFFF - l_s) + l_dvd + 1) + : (l_dvd - l_s); + h_s >>= 1; + l_s = s << (--counter); + div |= 1; + continue; + } + + } while (counter > -1); + /* overflow */ + if (h_dvd || (l_dvd > s)) { + x86emu_intr_raise(0); + return; + } + mod = l_dvd; +#endif + CLEAR_FLAG(F_CF); + CLEAR_FLAG(F_AF); + CLEAR_FLAG(F_SF); + SET_FLAG(F_ZF); + set_parity_flag(mod); + + M.x86.R_EAX = (u32)div; + M.x86.R_EDX = (u32)mod; +} + +/**************************************************************************** +REMARKS: +Implements the IN string instruction and side effects. +****************************************************************************/ + +static void single_in(int size) +{ + if(size == 1) + store_data_byte_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inb)(M.x86.R_DX)); + else if (size == 2) + store_data_word_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inw)(M.x86.R_DX)); + else + store_data_long_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inl)(M.x86.R_DX)); +} + +void ins(int size) +{ + int inc = size; + + if (ACCESS_FLAG(F_DF)) { + inc = -size; + } + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* in until (E)CX is ZERO. */ + u32 count = ((M.x86.mode & SYSMODE_32BIT_REP) ? + M.x86.R_ECX : M.x86.R_CX); + while (count--) { + single_in(size); + M.x86.R_DI += inc; + } + M.x86.R_CX = 0; + if (M.x86.mode & SYSMODE_32BIT_REP) { + M.x86.R_ECX = 0; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } else { + single_in(size); + M.x86.R_DI += inc; + } +} + +/**************************************************************************** +REMARKS: +Implements the OUT string instruction and side effects. +****************************************************************************/ + +static void single_out(int size) +{ + if(size == 1) + (*sys_outb)(M.x86.R_DX,fetch_data_byte_abs(M.x86.R_ES, M.x86.R_SI)); + else if (size == 2) + (*sys_outw)(M.x86.R_DX,fetch_data_word_abs(M.x86.R_ES, M.x86.R_SI)); + else + (*sys_outl)(M.x86.R_DX,fetch_data_long_abs(M.x86.R_ES, M.x86.R_SI)); +} + +void outs(int size) +{ + int inc = size; + + if (ACCESS_FLAG(F_DF)) { + inc = -size; + } + if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { + /* dont care whether REPE or REPNE */ + /* out until (E)CX is ZERO. */ + u32 count = ((M.x86.mode & SYSMODE_32BIT_REP) ? + M.x86.R_ECX : M.x86.R_CX); + while (count--) { + single_out(size); + M.x86.R_SI += inc; + } + M.x86.R_CX = 0; + if (M.x86.mode & SYSMODE_32BIT_REP) { + M.x86.R_ECX = 0; + } + M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); + } else { + single_out(size); + M.x86.R_SI += inc; + } +} + +/**************************************************************************** +PARAMETERS: +addr - Address to fetch word from + +REMARKS: +Fetches a word from emulator memory using an absolute address. +****************************************************************************/ +u16 mem_access_word(int addr) +{ +DB( if (CHECK_MEM_ACCESS()) + x86emu_check_mem_access(addr);) + return (*sys_rdw)(addr); +} + +/**************************************************************************** +REMARKS: +Pushes a word onto the stack. + +NOTE: Do not inline this, as (*sys_wrX) is already inline! +****************************************************************************/ +void push_word(u16 w) +{ +DB( if (CHECK_SP_ACCESS()) + x86emu_check_sp_access();) + M.x86.R_SP -= 2; + (*sys_wrw)(((u32)M.x86.R_SS << 4) + M.x86.R_SP, w); +} + +/**************************************************************************** +REMARKS: +Pushes a long onto the stack. + +NOTE: Do not inline this, as (*sys_wrX) is already inline! +****************************************************************************/ +void push_long(u32 w) +{ +DB( if (CHECK_SP_ACCESS()) + x86emu_check_sp_access();) + M.x86.R_SP -= 4; + (*sys_wrl)(((u32)M.x86.R_SS << 4) + M.x86.R_SP, w); +} + +/**************************************************************************** +REMARKS: +Pops a word from the stack. + +NOTE: Do not inline this, as (*sys_rdX) is already inline! +****************************************************************************/ +u16 pop_word(void) +{ + u16 res; + +DB( if (CHECK_SP_ACCESS()) + x86emu_check_sp_access();) + res = (*sys_rdw)(((u32)M.x86.R_SS << 4) + M.x86.R_SP); + M.x86.R_SP += 2; + return res; +} + +/**************************************************************************** +REMARKS: +Pops a long from the stack. + +NOTE: Do not inline this, as (*sys_rdX) is already inline! +****************************************************************************/ +u32 pop_long(void) +{ + u32 res; + +DB( if (CHECK_SP_ACCESS()) + x86emu_check_sp_access();) + res = (*sys_rdl)(((u32)M.x86.R_SS << 4) + M.x86.R_SP); + M.x86.R_SP += 4; + return res; +} + +/**************************************************************************** +REMARKS: +CPUID takes EAX/ECX as inputs, writes EAX/EBX/ECX/EDX as output +****************************************************************************/ +void x86emu_cpuid(void) +{ + u32 feature = M.x86.R_EAX; + + switch (feature) { + case 0: + /* Regardless if we have real data from the hardware, the emulator + * will only support upto feature 1, which we set in register EAX. + * Registers EBX:EDX:ECX contain a string identifying the CPU. + */ + M.x86.R_EAX = 1; + /* EBX:EDX:ECX = "GenuineIntel" */ + M.x86.R_EBX = 0x756e6547; + M.x86.R_EDX = 0x49656e69; + M.x86.R_ECX = 0x6c65746e; + break; + case 1: + /* If we don't have x86 compatible hardware, we return values from an + * Intel 486dx4; which was one of the first processors to have CPUID. + */ + M.x86.R_EAX = 0x00000480; + M.x86.R_EBX = 0x00000000; + M.x86.R_ECX = 0x00000000; + M.x86.R_EDX = 0x00000002; /* VME */ + /* In the case that we have hardware CPUID instruction, we make sure + * that the features reported are limited to TSC and VME. + */ + M.x86.R_EDX &= 0x00000012; + break; + default: + /* Finally, we don't support any additional features. Most CPUs + * return all zeros when queried for invalid or unsupported feature + * numbers. + */ + M.x86.R_EAX = 0; + M.x86.R_EBX = 0; + M.x86.R_ECX = 0; + M.x86.R_EDX = 0; + break; + } +} + diff --git a/src/device/oprom/x86emu/prim_ops.h b/src/device/oprom/x86emu/prim_ops.h new file mode 100644 index 0000000000..7230a71e5d --- /dev/null +++ b/src/device/oprom/x86emu/prim_ops.h @@ -0,0 +1,232 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for primitive operation functions. +* +****************************************************************************/ + +#ifndef __X86EMU_PRIM_OPS_H +#define __X86EMU_PRIM_OPS_H + +#include "prim_asm.h" + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + +u16 aaa_word (u16 d); +u16 aas_word (u16 d); +u16 aad_word (u16 d); +u16 aam_word (u8 d); +u8 adc_byte (u8 d, u8 s); +u16 adc_word (u16 d, u16 s); +u32 adc_long (u32 d, u32 s); +u8 add_byte (u8 d, u8 s); +u16 add_word (u16 d, u16 s); +u32 add_long (u32 d, u32 s); +u8 and_byte (u8 d, u8 s); +u16 and_word (u16 d, u16 s); +u32 and_long (u32 d, u32 s); +u8 cmp_byte (u8 d, u8 s); +u16 cmp_word (u16 d, u16 s); +u32 cmp_long (u32 d, u32 s); +u8 daa_byte (u8 d); +u8 das_byte (u8 d); +u8 dec_byte (u8 d); +u16 dec_word (u16 d); +u32 dec_long (u32 d); +u8 inc_byte (u8 d); +u16 inc_word (u16 d); +u32 inc_long (u32 d); +u8 or_byte (u8 d, u8 s); +u16 or_word (u16 d, u16 s); +u32 or_long (u32 d, u32 s); +u8 neg_byte (u8 s); +u16 neg_word (u16 s); +u32 neg_long (u32 s); +u8 not_byte (u8 s); +u16 not_word (u16 s); +u32 not_long (u32 s); +u8 rcl_byte (u8 d, u8 s); +u16 rcl_word (u16 d, u8 s); +u32 rcl_long (u32 d, u8 s); +u8 rcr_byte (u8 d, u8 s); +u16 rcr_word (u16 d, u8 s); +u32 rcr_long (u32 d, u8 s); +u8 rol_byte (u8 d, u8 s); +u16 rol_word (u16 d, u8 s); +u32 rol_long (u32 d, u8 s); +u8 ror_byte (u8 d, u8 s); +u16 ror_word (u16 d, u8 s); +u32 ror_long (u32 d, u8 s); +u8 shl_byte (u8 d, u8 s); +u16 shl_word (u16 d, u8 s); +u32 shl_long (u32 d, u8 s); +u8 shr_byte (u8 d, u8 s); +u16 shr_word (u16 d, u8 s); +u32 shr_long (u32 d, u8 s); +u8 sar_byte (u8 d, u8 s); +u16 sar_word (u16 d, u8 s); +u32 sar_long (u32 d, u8 s); +u16 shld_word (u16 d, u16 fill, u8 s); +u32 shld_long (u32 d, u32 fill, u8 s); +u16 shrd_word (u16 d, u16 fill, u8 s); +u32 shrd_long (u32 d, u32 fill, u8 s); +u8 sbb_byte (u8 d, u8 s); +u16 sbb_word (u16 d, u16 s); +u32 sbb_long (u32 d, u32 s); +u8 sub_byte (u8 d, u8 s); +u16 sub_word (u16 d, u16 s); +u32 sub_long (u32 d, u32 s); +void test_byte (u8 d, u8 s); +void test_word (u16 d, u16 s); +void test_long (u32 d, u32 s); +u8 xor_byte (u8 d, u8 s); +u16 xor_word (u16 d, u16 s); +u32 xor_long (u32 d, u32 s); +void imul_byte (u8 s); +void imul_word (u16 s); +void imul_long (u32 s); +void imul_long_direct(u32 *res_lo, u32* res_hi,u32 d, u32 s); +void mul_byte (u8 s); +void mul_word (u16 s); +void mul_long (u32 s); +void idiv_byte (u8 s); +void idiv_word (u16 s); +void idiv_long (u32 s); +void div_byte (u8 s); +void div_word (u16 s); +void div_long (u32 s); +void ins (int size); +void outs (int size); +u16 mem_access_word (int addr); +void push_word (u16 w); +void push_long (u32 w); +u16 pop_word (void); +u32 pop_long (void); +void x86emu_cpuid (void); + +#if defined(__HAVE_INLINE_ASSEMBLER__) && !defined(PRIM_OPS_NO_REDEFINE_ASM) + +#define aaa_word(d) aaa_word_asm(&M.x86.R_EFLG,d) +#define aas_word(d) aas_word_asm(&M.x86.R_EFLG,d) +#define aad_word(d) aad_word_asm(&M.x86.R_EFLG,d) +#define aam_word(d) aam_word_asm(&M.x86.R_EFLG,d) +#define adc_byte(d,s) adc_byte_asm(&M.x86.R_EFLG,d,s) +#define adc_word(d,s) adc_word_asm(&M.x86.R_EFLG,d,s) +#define adc_long(d,s) adc_long_asm(&M.x86.R_EFLG,d,s) +#define add_byte(d,s) add_byte_asm(&M.x86.R_EFLG,d,s) +#define add_word(d,s) add_word_asm(&M.x86.R_EFLG,d,s) +#define add_long(d,s) add_long_asm(&M.x86.R_EFLG,d,s) +#define and_byte(d,s) and_byte_asm(&M.x86.R_EFLG,d,s) +#define and_word(d,s) and_word_asm(&M.x86.R_EFLG,d,s) +#define and_long(d,s) and_long_asm(&M.x86.R_EFLG,d,s) +#define cmp_byte(d,s) cmp_byte_asm(&M.x86.R_EFLG,d,s) +#define cmp_word(d,s) cmp_word_asm(&M.x86.R_EFLG,d,s) +#define cmp_long(d,s) cmp_long_asm(&M.x86.R_EFLG,d,s) +#define daa_byte(d) daa_byte_asm(&M.x86.R_EFLG,d) +#define das_byte(d) das_byte_asm(&M.x86.R_EFLG,d) +#define dec_byte(d) dec_byte_asm(&M.x86.R_EFLG,d) +#define dec_word(d) dec_word_asm(&M.x86.R_EFLG,d) +#define dec_long(d) dec_long_asm(&M.x86.R_EFLG,d) +#define inc_byte(d) inc_byte_asm(&M.x86.R_EFLG,d) +#define inc_word(d) inc_word_asm(&M.x86.R_EFLG,d) +#define inc_long(d) inc_long_asm(&M.x86.R_EFLG,d) +#define or_byte(d,s) or_byte_asm(&M.x86.R_EFLG,d,s) +#define or_word(d,s) or_word_asm(&M.x86.R_EFLG,d,s) +#define or_long(d,s) or_long_asm(&M.x86.R_EFLG,d,s) +#define neg_byte(s) neg_byte_asm(&M.x86.R_EFLG,s) +#define neg_word(s) neg_word_asm(&M.x86.R_EFLG,s) +#define neg_long(s) neg_long_asm(&M.x86.R_EFLG,s) +#define not_byte(s) not_byte_asm(&M.x86.R_EFLG,s) +#define not_word(s) not_word_asm(&M.x86.R_EFLG,s) +#define not_long(s) not_long_asm(&M.x86.R_EFLG,s) +#define rcl_byte(d,s) rcl_byte_asm(&M.x86.R_EFLG,d,s) +#define rcl_word(d,s) rcl_word_asm(&M.x86.R_EFLG,d,s) +#define rcl_long(d,s) rcl_long_asm(&M.x86.R_EFLG,d,s) +#define rcr_byte(d,s) rcr_byte_asm(&M.x86.R_EFLG,d,s) +#define rcr_word(d,s) rcr_word_asm(&M.x86.R_EFLG,d,s) +#define rcr_long(d,s) rcr_long_asm(&M.x86.R_EFLG,d,s) +#define rol_byte(d,s) rol_byte_asm(&M.x86.R_EFLG,d,s) +#define rol_word(d,s) rol_word_asm(&M.x86.R_EFLG,d,s) +#define rol_long(d,s) rol_long_asm(&M.x86.R_EFLG,d,s) +#define ror_byte(d,s) ror_byte_asm(&M.x86.R_EFLG,d,s) +#define ror_word(d,s) ror_word_asm(&M.x86.R_EFLG,d,s) +#define ror_long(d,s) ror_long_asm(&M.x86.R_EFLG,d,s) +#define shl_byte(d,s) shl_byte_asm(&M.x86.R_EFLG,d,s) +#define shl_word(d,s) shl_word_asm(&M.x86.R_EFLG,d,s) +#define shl_long(d,s) shl_long_asm(&M.x86.R_EFLG,d,s) +#define shr_byte(d,s) shr_byte_asm(&M.x86.R_EFLG,d,s) +#define shr_word(d,s) shr_word_asm(&M.x86.R_EFLG,d,s) +#define shr_long(d,s) shr_long_asm(&M.x86.R_EFLG,d,s) +#define sar_byte(d,s) sar_byte_asm(&M.x86.R_EFLG,d,s) +#define sar_word(d,s) sar_word_asm(&M.x86.R_EFLG,d,s) +#define sar_long(d,s) sar_long_asm(&M.x86.R_EFLG,d,s) +#define shld_word(d,fill,s) shld_word_asm(&M.x86.R_EFLG,d,fill,s) +#define shld_long(d,fill,s) shld_long_asm(&M.x86.R_EFLG,d,fill,s) +#define shrd_word(d,fill,s) shrd_word_asm(&M.x86.R_EFLG,d,fill,s) +#define shrd_long(d,fill,s) shrd_long_asm(&M.x86.R_EFLG,d,fill,s) +#define sbb_byte(d,s) sbb_byte_asm(&M.x86.R_EFLG,d,s) +#define sbb_word(d,s) sbb_word_asm(&M.x86.R_EFLG,d,s) +#define sbb_long(d,s) sbb_long_asm(&M.x86.R_EFLG,d,s) +#define sub_byte(d,s) sub_byte_asm(&M.x86.R_EFLG,d,s) +#define sub_word(d,s) sub_word_asm(&M.x86.R_EFLG,d,s) +#define sub_long(d,s) sub_long_asm(&M.x86.R_EFLG,d,s) +#define test_byte(d,s) test_byte_asm(&M.x86.R_EFLG,d,s) +#define test_word(d,s) test_word_asm(&M.x86.R_EFLG,d,s) +#define test_long(d,s) test_long_asm(&M.x86.R_EFLG,d,s) +#define xor_byte(d,s) xor_byte_asm(&M.x86.R_EFLG,d,s) +#define xor_word(d,s) xor_word_asm(&M.x86.R_EFLG,d,s) +#define xor_long(d,s) xor_long_asm(&M.x86.R_EFLG,d,s) +#define imul_byte(s) imul_byte_asm(&M.x86.R_EFLG,&M.x86.R_AX,M.x86.R_AL,s) +#define imul_word(s) imul_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,s) +#define imul_long(s) imul_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,s) +#define imul_long_direct(res_lo,res_hi,d,s) imul_long_asm(&M.x86.R_EFLG,res_lo,res_hi,d,s) +#define mul_byte(s) mul_byte_asm(&M.x86.R_EFLG,&M.x86.R_AX,M.x86.R_AL,s) +#define mul_word(s) mul_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,s) +#define mul_long(s) mul_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,s) +#define idiv_byte(s) idiv_byte_asm(&M.x86.R_EFLG,&M.x86.R_AL,&M.x86.R_AH,M.x86.R_AX,s) +#define idiv_word(s) idiv_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,M.x86.R_DX,s) +#define idiv_long(s) idiv_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,M.x86.R_EDX,s) +#define div_byte(s) div_byte_asm(&M.x86.R_EFLG,&M.x86.R_AL,&M.x86.R_AH,M.x86.R_AX,s) +#define div_word(s) div_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,M.x86.R_DX,s) +#define div_long(s) div_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,M.x86.R_EDX,s) + +#endif + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif + +#endif /* __X86EMU_PRIM_OPS_H */ diff --git a/src/device/oprom/x86emu/sys.c b/src/device/oprom/x86emu/sys.c new file mode 100644 index 0000000000..7a9e3921ec --- /dev/null +++ b/src/device/oprom/x86emu/sys.c @@ -0,0 +1,406 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: This file includes subroutines which are related to +* programmed I/O and memory access. Included in this module +* are default functions with limited usefulness. For real +* uses these functions will most likely be overriden by the +* user library. +* +****************************************************************************/ +/* $XFree86: xc/extras/x86emu/src/x86emu/sys.c,v 1.5 2000/08/23 22:10:01 tsi Exp $ */ + +#include <arch/io.h> +#include <x86emu/x86emu.h> +#include <x86emu/regs.h> +#include "debug.h" +#include "prim_ops.h" + +#ifdef IN_MODULE +#include "xf86_ansic.h" +#else +#include <string.h> +#endif +/*------------------------- Global Variables ------------------------------*/ + +X86EMU_sysEnv _X86EMU_env; /* Global emulator machine state */ +X86EMU_intrFuncs _X86EMU_intrTab[256]; + +/*----------------------------- Implementation ----------------------------*/ + +/* compute a pointer. This replaces code scattered all over the place! */ +static u8 *mem_ptr(u32 addr, int size) +{ + u8 *retaddr = 0; + + if (addr > M.mem_size - size) { + DB(printf("mem_ptr: address %#x out of range!\n", addr);) + HALT_SYS(); + } + if (addr < 0x200) { + //printf("%x:%x updating int vector 0x%x\n", + // M.x86.R_CS, M.x86.R_IP, addr >> 2); + } + retaddr = (u8 *) (M.mem_base + addr); + + return retaddr; +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read + +RETURNS: +Byte value read from emulator memory. + +REMARKS: +Reads a byte value from the emulator memory. +****************************************************************************/ +u8 X86API rdb(u32 addr) +{ + u8 val; + u8 *ptr; + + ptr = mem_ptr(addr, 1); + + val = *ptr; + DB(if (DEBUG_MEM_TRACE()) + printf("%#08x 1 -> %#x\n", addr, val);) + return val; +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read + +RETURNS: +Word value read from emulator memory. + +REMARKS: +Reads a word value from the emulator memory. +****************************************************************************/ +u16 X86API rdw(u32 addr) +{ + u16 val = 0; + u8 *ptr; + + ptr = mem_ptr(addr, 2); + val = *(u16 *) (ptr); + + DB(if (DEBUG_MEM_TRACE()) + printf("%#08x 2 -> %#x\n", addr, val);) + return val; +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read + +RETURNS: +Long value read from emulator memory. +REMARKS: +Reads a long value from the emulator memory. +****************************************************************************/ +u32 X86API rdl(u32 addr) +{ + u32 val = 0; + u8 *ptr; + + ptr = mem_ptr(addr, 4); + val = *(u32 *) (ptr); + + DB(if (DEBUG_MEM_TRACE()) + printf("%#08x 4 -> %#x\n", addr, val);) + return val; +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read +val - Value to store + +REMARKS: +Writes a byte value to emulator memory. +****************************************************************************/ +void X86API wrb(u32 addr, u8 val) +{ + u8 *ptr; + + ptr = mem_ptr(addr, 1); + *(u8 *) (ptr) = val; + + DB(if (DEBUG_MEM_TRACE()) + printf("%#08x 1 <- %#x\n", addr, val);) +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read +val - Value to store + +REMARKS: +Writes a word value to emulator memory. +****************************************************************************/ +void X86API wrw(u32 addr, u16 val) +{ + u8 *ptr; + + ptr = mem_ptr(addr, 2); + *(u16 *) (ptr) = val; + + DB(if (DEBUG_MEM_TRACE()) + printf("%#08x 2 <- %#x\n", addr, val);) +} + +/**************************************************************************** +PARAMETERS: +addr - Emulator memory address to read +val - Value to store + +REMARKS: +Writes a long value to emulator memory. +****************************************************************************/ +void X86API wrl(u32 addr, u32 val) +{ + u8 *ptr; + + ptr = mem_ptr(addr, 4); + *(u32 *) (ptr) = val; + + DB(if (DEBUG_MEM_TRACE()) + printf("%#08x 4 <- %#x\n", addr, val);) + + +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to read +RETURN: +0 +REMARKS: +Default PIO byte read function. Doesn't perform real inb. +****************************************************************************/ +static u8 X86API p_inb(X86EMU_pioAddr addr) +{ + DB(if (DEBUG_IO_TRACE()) + printf("inb %#04x \n", addr);) + return inb(addr); +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to read +RETURN: +0 +REMARKS: +Default PIO word read function. Doesn't perform real inw. +****************************************************************************/ +static u16 X86API p_inw(X86EMU_pioAddr addr) +{ + DB(if (DEBUG_IO_TRACE()) + printf("inw %#04x \n", addr);) + return inw(addr); +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to read +RETURN: +0 +REMARKS: +Default PIO long read function. Doesn't perform real inl. +****************************************************************************/ +static u32 X86API p_inl(X86EMU_pioAddr addr) +{ + DB(if (DEBUG_IO_TRACE()) + printf("inl %#04x \n", addr);) + return inl(addr); +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to write +val - Value to store +REMARKS: +Default PIO byte write function. Doesn't perform real outb. +****************************************************************************/ +static void X86API p_outb(X86EMU_pioAddr addr, u8 val) +{ + DB(if (DEBUG_IO_TRACE()) + printf("outb %#02x -> %#04x \n", val, addr);) + outb(val, addr); + return; +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to write +val - Value to store +REMARKS: +Default PIO word write function. Doesn't perform real outw. +****************************************************************************/ +static void X86API p_outw(X86EMU_pioAddr addr, u16 val) +{ + DB(if (DEBUG_IO_TRACE()) + printf("outw %#04x -> %#04x \n", val, addr);) + outw(val, addr); + return; +} + +/**************************************************************************** +PARAMETERS: +addr - PIO address to write +val - Value to store +REMARKS: +Default PIO ;ong write function. Doesn't perform real outl. +****************************************************************************/ +static void X86API p_outl(X86EMU_pioAddr addr, u32 val) +{ + DB(if (DEBUG_IO_TRACE()) + printf("outl %#08x -> %#04x \n", val, addr);) + + outl(val, addr); + return; +} + +/*------------------------- Global Variables ------------------------------*/ + +u8(X86APIP sys_rdb) (u32 addr) = rdb; +u16(X86APIP sys_rdw) (u32 addr) = rdw; +u32(X86APIP sys_rdl) (u32 addr) = rdl; +void (X86APIP sys_wrb) (u32 addr, u8 val) = wrb; +void (X86APIP sys_wrw) (u32 addr, u16 val) = wrw; +void (X86APIP sys_wrl) (u32 addr, u32 val) = wrl; +u8(X86APIP sys_inb) (X86EMU_pioAddr addr) = p_inb; +u16(X86APIP sys_inw) (X86EMU_pioAddr addr) = p_inw; +u32(X86APIP sys_inl) (X86EMU_pioAddr addr) = p_inl; +void (X86APIP sys_outb) (X86EMU_pioAddr addr, u8 val) = p_outb; +void (X86APIP sys_outw) (X86EMU_pioAddr addr, u16 val) = p_outw; +void (X86APIP sys_outl) (X86EMU_pioAddr addr, u32 val) = p_outl; + +/*----------------------------- Setup -------------------------------------*/ + +/**************************************************************************** +PARAMETERS: +funcs - New memory function pointers to make active + +REMARKS: +This function is used to set the pointers to functions which access +memory space, allowing the user application to override these functions +and hook them out as necessary for their application. +****************************************************************************/ +void X86EMU_setupMemFuncs(X86EMU_memFuncs * funcs) +{ + sys_rdb = funcs->rdb; + sys_rdw = funcs->rdw; + sys_rdl = funcs->rdl; + sys_wrb = funcs->wrb; + sys_wrw = funcs->wrw; + sys_wrl = funcs->wrl; +} + +/**************************************************************************** +PARAMETERS: +funcs - New programmed I/O function pointers to make active + +REMARKS: +This function is used to set the pointers to functions which access +I/O space, allowing the user application to override these functions +and hook them out as necessary for their application. +****************************************************************************/ +void X86EMU_setupPioFuncs(X86EMU_pioFuncs * funcs) +{ + sys_inb = funcs->inb; + sys_inw = funcs->inw; + sys_inl = funcs->inl; + sys_outb = funcs->outb; + sys_outw = funcs->outw; + sys_outl = funcs->outl; +} + +/**************************************************************************** +PARAMETERS: +funcs - New interrupt vector table to make active + +REMARKS: +This function is used to set the pointers to functions which handle +interrupt processing in the emulator, allowing the user application to +hook interrupts as necessary for their application. Any interrupts that +are not hooked by the user application, and reflected and handled internally +in the emulator via the interrupt vector table. This allows the application +to get control when the code being emulated executes specific software +interrupts. +****************************************************************************/ +void X86EMU_setupIntrFuncs(X86EMU_intrFuncs funcs[]) +{ + int i; + + for (i = 0; i < 256; i++) + _X86EMU_intrTab[i] = NULL; + if (funcs) { + for (i = 0; i < 256; i++) + _X86EMU_intrTab[i] = funcs[i]; + } +} + +/**************************************************************************** +PARAMETERS: +int - New software interrupt to prepare for + +REMARKS: +This function is used to set up the emulator state to exceute a software +interrupt. This can be used by the user application code to allow an +interrupt to be hooked, examined and then reflected back to the emulator +so that the code in the emulator will continue processing the software +interrupt as per normal. This essentially allows system code to actively +hook and handle certain software interrupts as necessary. +****************************************************************************/ +void X86EMU_prepareForInt(int num) +{ + push_word((u16) M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + push_word(M.x86.R_CS); + M.x86.R_CS = mem_access_word(num * 4 + 2); + push_word(M.x86.R_IP); + M.x86.R_IP = mem_access_word(num * 4); + M.x86.intr = 0; +} + +void X86EMU_setMemBase(void *base, size_t size) +{ + M.mem_base = (unsigned long) base; + M.mem_size = size; +} diff --git a/src/device/oprom/x86emu/x86emui.h b/src/device/oprom/x86emu/x86emui.h new file mode 100644 index 0000000000..e34a1bad30 --- /dev/null +++ b/src/device/oprom/x86emu/x86emui.h @@ -0,0 +1,103 @@ +/**************************************************************************** +* +* Realmode X86 Emulator Library +* +* Copyright (C) 1996-1999 SciTech Software, Inc. +* Copyright (C) David Mosberger-Tang +* Copyright (C) 1999 Egbert Eich +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: ANSI C +* Environment: Any +* Developer: Kendall Bennett +* +* Description: Header file for system specific functions. These functions +* are always compiled and linked in the OS depedent libraries, +* and never in a binary portable driver. +* +****************************************************************************/ + +/* $XFree86: xc/extras/x86emu/src/x86emu/x86emu/x86emui.h,v 1.4 2001/04/01 13:59:58 tsi Exp $ */ + +#ifndef __X86EMU_X86EMUI_H +#define __X86EMU_X86EMUI_H + +/* If we are compiling in C++ mode, we can compile some functions as + * inline to increase performance (however the code size increases quite + * dramatically in this case). + */ + +#if defined(__cplusplus) && !defined(_NO_INLINE) +#define _INLINE inline +#else +#define _INLINE static +#endif + +/* Get rid of unused parameters in C++ compilation mode */ + +#ifdef __cplusplus +#define X86EMU_UNUSED(v) +#else +#define X86EMU_UNUSED(v) v __attribute__((unused)) +#endif + +#include "x86emu/x86emu.h" +#include "x86emu/regs.h" +#include "debug.h" +#include "decode.h" +#include "ops.h" +#include "prim_ops.h" +#include "fpu.h" +#include "x86emu/fpu_regs.h" + +#ifdef IN_MODULE +#include <xf86_ansic.h> +#else +#include <string.h> +#endif +/*--------------------------- Inline Functions ----------------------------*/ + +#ifdef __cplusplus +extern "C" { /* Use "C" linkage when in C++ mode */ +#endif + +extern u8 (X86APIP sys_rdb)(u32 addr); +extern u16 (X86APIP sys_rdw)(u32 addr); +extern u32 (X86APIP sys_rdl)(u32 addr); +extern void (X86APIP sys_wrb)(u32 addr,u8 val); +extern void (X86APIP sys_wrw)(u32 addr,u16 val); +extern void (X86APIP sys_wrl)(u32 addr,u32 val); + +extern u8 (X86APIP sys_inb)(X86EMU_pioAddr addr); +extern u16 (X86APIP sys_inw)(X86EMU_pioAddr addr); +extern u32 (X86APIP sys_inl)(X86EMU_pioAddr addr); +extern void (X86APIP sys_outb)(X86EMU_pioAddr addr,u8 val); +extern void (X86APIP sys_outw)(X86EMU_pioAddr addr,u16 val); +extern void (X86APIP sys_outl)(X86EMU_pioAddr addr,u32 val); + +#ifdef __cplusplus +} /* End of "C" linkage for C++ */ +#endif + +#endif /* __X86EMU_X86EMUI_H */ diff --git a/src/device/oprom/yabel/Makefile.inc b/src/device/oprom/yabel/Makefile.inc new file mode 100644 index 0000000000..f05998cba5 --- /dev/null +++ b/src/device/oprom/yabel/Makefile.inc @@ -0,0 +1,9 @@ +ramstage-y += biosemu.c +ramstage-y += debug.c +ramstage-y += device.c +ramstage-y += interrupt.c +ramstage-y += io.c +ramstage-y += mem.c +ramstage-y += pmm.c +ramstage-y += vbe.c +subdirs-y += compat diff --git a/src/device/oprom/yabel/biosemu.c b/src/device/oprom/yabel/biosemu.c new file mode 100644 index 0000000000..2a2ca312cb --- /dev/null +++ b/src/device/oprom/yabel/biosemu.c @@ -0,0 +1,395 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * Copyright (c) 2008, 2009 Pattrick Hueper <phueper@hueper.net> + * Copyright (c) 2010 coresystems GmbH + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#include <string.h> +#include <types.h> + +#include "debug.h" + +#include <x86emu/x86emu.h> +#include <x86emu/regs.h> +#include "../x86emu/prim_ops.h" + +#include "biosemu.h" +#include "io.h" +#include "mem.h" +#include "interrupt.h" +#include "device.h" +#include "pmm.h" + +#include <device/device.h> +#include "compat/rtas.h" + +static X86EMU_memFuncs my_mem_funcs = { + my_rdb, my_rdw, my_rdl, + my_wrb, my_wrw, my_wrl +}; + +static X86EMU_pioFuncs my_pio_funcs = { + my_inb, my_inw, my_inl, + my_outb, my_outw, my_outl +}; + +/* interrupt function override array (see biosemu.h) */ +yabel_handleIntFunc yabel_intFuncArray[256]; + +void +mainboard_interrupt_handlers(int interrupt, yabel_handleIntFunc func) +{ + yabel_intFuncArray[interrupt] = func; +} + +/* main entry into YABEL biosemu, arguments are: + * *biosmem = pointer to virtual memory + * biosmem_size = size of the virtual memory + * *dev = pointer to the device to be initialised + * rom_addr = address of the OptionROM to be executed, if this is = 0, YABEL + * will look for an ExpansionROM BAR and use the code from there. + */ +u32 +biosemu(u8 *biosmem, u32 biosmem_size, struct device * dev, unsigned long rom_addr) +{ + u8 *rom_image; + int i = 0; +#if CONFIG_X86EMU_DEBUG + debug_flags = 0; +#if CONFIG_X86EMU_DEBUG_JMP + debug_flags |= DEBUG_JMP; +#endif +#if CONFIG_X86EMU_DEBUG_TRACE + debug_flags |= DEBUG_TRACE_X86EMU; +#endif +#if CONFIG_X86EMU_DEBUG_PNP + debug_flags |= DEBUG_PNP; +#endif +#if CONFIG_X86EMU_DEBUG_DISK + debug_flags |= DEBUG_DISK; +#endif +#if CONFIG_X86EMU_DEBUG_PMM + debug_flags |= DEBUG_PMM; +#endif +#if CONFIG_X86EMU_DEBUG_VBE + debug_flags |= DEBUG_VBE; +#endif +#if CONFIG_X86EMU_DEBUG_INT10 + debug_flags |= DEBUG_PRINT_INT10; +#endif +#if CONFIG_X86EMU_DEBUG_INTERRUPTS + debug_flags |= DEBUG_INTR; +#endif +#if CONFIG_X86EMU_DEBUG_CHECK_VMEM_ACCESS + debug_flags |= DEBUG_CHECK_VMEM_ACCESS; +#endif +#if CONFIG_X86EMU_DEBUG_MEM + debug_flags |= DEBUG_MEM; +#endif +#if CONFIG_X86EMU_DEBUG_IO + debug_flags |= DEBUG_IO; +#endif + +#endif + if (biosmem_size < MIN_REQUIRED_VMEM_SIZE) { + printf("Error: Not enough virtual memory: %x, required: %x!\n", + biosmem_size, MIN_REQUIRED_VMEM_SIZE); + return -1; + } + if (biosemu_dev_init(dev) != 0) { + printf("Error initializing device!\n"); + return -1; + } + if (biosemu_dev_check_exprom(rom_addr) != 0) { + printf("Error: Device Expansion ROM invalid!\n"); + return -1; + } + biosemu_add_special_memory(0, 0x500); // IVT + BDA + biosemu_add_special_memory(OPTION_ROM_CODE_SEGMENT << 4, 0x10000); // option ROM + + rom_image = (u8 *) bios_device.img_addr; + DEBUG_PRINTF("executing rom_image from %p\n", rom_image); + DEBUG_PRINTF("biosmem at %p\n", biosmem); + + DEBUG_PRINTF("Image Size: %d\n", bios_device.img_size); + + // in case we jump somewhere unexpected, or execution is finished, + // fill the biosmem with hlt instructions (0xf4) + // But we have to be careful: If biosmem is 0x00000000 we're running + // in the lower 1MB and we must not wipe memory like that. + if (biosmem) { + DEBUG_PRINTF("Clearing biosmem\n"); + memset(biosmem, 0xf4, biosmem_size); + } + + X86EMU_setMemBase(biosmem, biosmem_size); + + DEBUG_PRINTF("membase set: %08x, size: %08x\n", (int) M.mem_base, + (int) M.mem_size); + + // copy expansion ROM image to segment OPTION_ROM_CODE_SEGMENT + // NOTE: this sometimes fails, some bytes are 0x00... so we compare + // after copying and do some retries... + u8 *mem_img = (u8*)(OPTION_ROM_CODE_SEGMENT << 4); + u8 copy_count = 0; + u8 cmp_result = 0; + do { +#if 0 + set_ci(); + memcpy(mem_img, rom_image, len); + clr_ci(); +#else + // memcpy fails... try copy byte-by-byte with set/clr_ci + u8 c; + for (i = 0; i < bios_device.img_size; i++) { + set_ci(); + c = *(rom_image + i); + if (c != *(rom_image + i)) { + clr_ci(); + printf("Copy failed at: %x/%x\n", i, + bios_device.img_size); + printf("rom_image(%x): %x, mem_img(%x): %x\n", + i, *(rom_image + i), i, *(mem_img + i)); + break; + } + clr_ci(); + my_wrb((u32)mem_img + i, c); + } +#endif + copy_count++; + set_ci(); + cmp_result = memcmp(mem_img, rom_image, bios_device.img_size); + clr_ci(); + } + while ((copy_count < 5) && (cmp_result != 0)); + if (cmp_result != 0) { + printf + ("\nCopying Expansion ROM Image to Memory failed after %d retries! (%x)\n", + copy_count, cmp_result); + dump(rom_image, 0x20); + dump(mem_img, 0x20); + return 0; + } + // setup default Interrupt Vectors + // some expansion ROMs seem to check for these addresses.. + // each handler is only an IRET (0xCF) instruction + // ROM BIOS Int 10 Handler F000:F065 + my_wrl(0x10 * 4, 0xf000f065); + my_wrb(0x000ff065, 0xcf); + // ROM BIOS Int 11 Handler F000:F84D + my_wrl(0x11 * 4, 0xf000f84d); + my_wrb(0x000ff84d, 0xcf); + // ROM BIOS Int 12 Handler F000:F841 + my_wrl(0x12 * 4, 0xf000f841); + my_wrb(0x000ff841, 0xcf); + // ROM BIOS Int 13 Handler F000:EC59 + my_wrl(0x13 * 4, 0xf000ec59); + my_wrb(0x000fec59, 0xcf); + // ROM BIOS Int 14 Handler F000:E739 + my_wrl(0x14 * 4, 0xf000e739); + my_wrb(0x000fe739, 0xcf); + // ROM BIOS Int 15 Handler F000:F859 + my_wrl(0x15 * 4, 0xf000f859); + my_wrb(0x000ff859, 0xcf); + // ROM BIOS Int 16 Handler F000:E82E + my_wrl(0x16 * 4, 0xf000e82e); + my_wrb(0x000fe82e, 0xcf); + // ROM BIOS Int 17 Handler F000:EFD2 + my_wrl(0x17 * 4, 0xf000efd2); + my_wrb(0x000fefd2, 0xcf); + // ROM BIOS Int 1A Handler F000:FE6E + my_wrl(0x1a * 4, 0xf000fe6e); + my_wrb(0x000ffe6e, 0xcf); + + // setup BIOS Data Area (0000:04xx, or 0040:00xx) + // we currently 0 this area, meaning "we dont have + // any hardware" :-) no serial/parallel ports, floppys, ... + memset(biosmem + 0x400, 0x0, 0x100); + + // at offset 13h in BDA is the memory size in kbytes + my_wrw(0x413, biosmem_size / 1024); + // at offset 0eh in BDA is the segment of the Extended BIOS Data Area + // see setup further down + my_wrw(0x40e, INITIAL_EBDA_SEGMENT); + // TODO: setup BDA Video Data ( offset 49h-66h) + // e.g. to store video mode, cursor position, ... + // in int10 (done) handler and VBE Functions + + // TODO: setup BDA Fixed Disk Data + // 74h: Fixed Disk Last Operation Status + // 75h: Fixed Disk Number of Disk Drives + + // TODO: check BDA for further needed data... + + //setup Extended BIOS Data Area + //we currently 0 this area + memset(biosmem + (INITIAL_EBDA_SEGMENT << 4), 0, INITIAL_EBDA_SIZE); + // at offset 0h in EBDA is the size of the EBDA in KB + my_wrw((INITIAL_EBDA_SEGMENT << 4) + 0x0, INITIAL_EBDA_SIZE / 1024); + //TODO: check for further needed EBDA data... + + // setup original ROM BIOS Area (F000:xxxx) + const char *date = "06/11/99"; + for (i = 0; date[i]; i++) + my_wrb(0xffff5 + i, date[i]); + // set up eisa ident string + const char *ident = "PCI_ISA"; + for (i = 0; ident[i]; i++) + my_wrb(0xfffd9 + i, ident[i]); + + // write system model id for IBM-AT + // according to "Ralf Browns Interrupt List" Int15 AH=C0 Table 515, + // model FC is the original AT and also used in all DOSEMU Versions. + my_wrb(0xFFFFE, 0xfc); + + //setup interrupt handler + X86EMU_intrFuncs intrFuncs[256]; + for (i = 0; i < 256; i++) + intrFuncs[i] = handleInterrupt; + X86EMU_setupIntrFuncs(intrFuncs); + X86EMU_setupPioFuncs(&my_pio_funcs); + X86EMU_setupMemFuncs(&my_mem_funcs); + + //setup PMM struct in BIOS_DATA_SEGMENT, offset 0x0 + u8 pmm_length = pmm_setup(BIOS_DATA_SEGMENT, 0x0); + if (pmm_length <= 0) { + printf ("\nYABEL: Warning: PMM Area could not be setup. PMM not available (%x)\n", + pmm_length); + return 0; + } else { + CHECK_DBG(DEBUG_PMM) { + /* test the PMM */ + pmm_test(); + /* and clean it again by calling pmm_setup... */ + pmm_length = pmm_setup(BIOS_DATA_SEGMENT, 0x0); + } + } + // setup the CPU + M.x86.R_AH = bios_device.bus; + M.x86.R_AL = bios_device.devfn; + M.x86.R_DX = 0x80; + M.x86.R_EIP = 3; + M.x86.R_CS = OPTION_ROM_CODE_SEGMENT; + + // Initialize stack and data segment + M.x86.R_SS = STACK_SEGMENT; + M.x86.R_SP = STACK_START_OFFSET; + M.x86.R_DS = DATA_SEGMENT; + + // push a HLT instruction and a pointer to it onto the stack + // any return will pop the pointer and jump to the HLT, thus + // exiting (more or less) cleanly + push_word(0xf4f4); // F4=HLT + push_word(M.x86.R_SS); + push_word(M.x86.R_SP + 2); + + CHECK_DBG(DEBUG_TRACE_X86EMU) { + X86EMU_trace_on(); +#if 0 + } else { + M.x86.debug |= DEBUG_SAVE_IP_CS_F; + M.x86.debug |= DEBUG_DECODE_F; + M.x86.debug |= DEBUG_DECODE_NOPRINT_F; +#endif + } + CHECK_DBG(DEBUG_JMP) { + M.x86.debug |= DEBUG_TRACEJMP_F; + M.x86.debug |= DEBUG_TRACEJMP_REGS_F; + M.x86.debug |= DEBUG_TRACECALL_F; + M.x86.debug |= DEBUG_TRACECALL_REGS_F; + } + + DEBUG_PRINTF("Executing Initialization Vector...\n"); + X86EMU_exec(); + DEBUG_PRINTF("done\n"); + + /* According to the PNP BIOS Spec, Option ROMs should upon exit, return + * some boot device status in AX (see PNP BIOS Spec Section 3.3 + */ + DEBUG_PRINTF_CS_IP("Option ROM Exit Status: %04x\n", M.x86.R_AX); +#if CONFIG_X86EMU_DEBUG + DEBUG_PRINTF("Exit Status Decode:\n"); + if (M.x86.R_AX & 0x100) { // bit 8 + DEBUG_PRINTF + (" IPL Device supporting INT 13h Block Device Format:\n"); + switch (((M.x86.R_AX >> 4) & 0x3)) { // bits 5:4 + case 0: + DEBUG_PRINTF(" No IPL Device attached\n"); + break; + case 1: + DEBUG_PRINTF(" IPL Device status unknown\n"); + break; + case 2: + DEBUG_PRINTF(" IPL Device attached\n"); + break; + case 3: + DEBUG_PRINTF(" IPL Device status RESERVED!!\n"); + break; + } + } + if (M.x86.R_AX & 0x80) { // bit 7 + DEBUG_PRINTF + (" Output Device supporting INT 10h Character Output:\n"); + switch (((M.x86.R_AX >> 4) & 0x3)) { // bits 5:4 + case 0: + DEBUG_PRINTF(" No Display Device attached\n"); + break; + case 1: + DEBUG_PRINTF(" Display Device status unknown\n"); + break; + case 2: + DEBUG_PRINTF(" Display Device attached\n"); + break; + case 3: + DEBUG_PRINTF(" Display Device status RESERVED!!\n"); + break; + } + } + if (M.x86.R_AX & 0x40) { // bit 6 + DEBUG_PRINTF + (" Input Device supporting INT 9h Character Input:\n"); + switch (((M.x86.R_AX >> 4) & 0x3)) { // bits 5:4 + case 0: + DEBUG_PRINTF(" No Input Device attached\n"); + break; + case 1: + DEBUG_PRINTF(" Input Device status unknown\n"); + break; + case 2: + DEBUG_PRINTF(" Input Device attached\n"); + break; + case 3: + DEBUG_PRINTF(" Input Device status RESERVED!!\n"); + break; + } + } +#endif + /* Check whether the stack is "clean" i.e. containing the HLT + * instruction we pushed before executing and pointing to the original + * stack address... indicating that the initialization probably was + * successful + */ + if ((pop_word() == 0xf4f4) && (M.x86.R_SS == STACK_SEGMENT) + && (M.x86.R_SP == STACK_START_OFFSET)) { + DEBUG_PRINTF("Stack is clean, initialization successfull!\n"); + } else { + printf("Stack unclean, initialization probably NOT COMPLETE!\n"); + DEBUG_PRINTF("SS:SP = %04x:%04x, expected: %04x:%04x\n", + M.x86.R_SS, M.x86.R_SP, STACK_SEGMENT, + STACK_START_OFFSET); + } + + // TODO: according to the BIOS Boot Spec initializations may be ended using INT18h and setting + // the status. + // We need to implement INT18 accordingly, pseudo code is in specsbbs101.pdf page 30 + // (also for Int19) + return 0; +} diff --git a/src/device/oprom/yabel/biosemu.h b/src/device/oprom/yabel/biosemu.h new file mode 100644 index 0000000000..4f5c4aaa5b --- /dev/null +++ b/src/device/oprom/yabel/biosemu.h @@ -0,0 +1,53 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net> + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#ifndef _BIOSEMU_BIOSEMU_H_ +#define _BIOSEMU_BIOSEMU_H_ + +#define MIN_REQUIRED_VMEM_SIZE 0x100000 // 1MB + +//define default segments for different components +#define STACK_SEGMENT 0x1000 //1000:xxxx +#define STACK_START_OFFSET 0xfffe + +#define DATA_SEGMENT 0x2000 +#define VBE_SEGMENT 0x3000 + +#define PMM_CONV_SEGMENT 0x4000 // 4000:xxxx is PMM conventional memory area, extended memory area + // will be anything beyound MIN_REQUIRED_MEMORY_SIZE +#define PNP_DATA_SEGMENT 0x5000 + +#define OPTION_ROM_CODE_SEGMENT 0xc000 + +#define BIOS_DATA_SEGMENT 0xF000 +// both EBDA values are _initial_ values, they may (and will be) changed at runtime by option ROMs!! +#define INITIAL_EBDA_SEGMENT 0xF600 // segment of the Extended BIOS Data Area +#define INITIAL_EBDA_SIZE 0x400 // size of the EBDA (at least 1KB!! since size is stored in KB!) + +#define PMM_INT_NUM 0xFC // we misuse INT FC for PMM functionality, at the PMM Entry Point + // Address, there will only be a call to this INT and a RETF +#define PNP_INT_NUM 0xFD + +/* array of funtion pointers to override generic interrupt handlers + * a YABEL caller can add functions to this array before calling YABEL + * if a interrupt occurs, YABEL checks wether a function is set in + * this array and only runs the generic interrupt handler code, if + * the function pointer is NULL */ +typedef int (* yabel_handleIntFunc)(void); +extern yabel_handleIntFunc yabel_intFuncArray[256]; +void mainboard_interrupt_handlers(int, yabel_handleIntFunc); + +struct device; + +u32 biosemu(u8 *biosmem, u32 biosmem_size, struct device *dev, unsigned long rom_addr); +#endif diff --git a/src/device/oprom/yabel/compat/Makefile.inc b/src/device/oprom/yabel/compat/Makefile.inc new file mode 100644 index 0000000000..8121c8b461 --- /dev/null +++ b/src/device/oprom/yabel/compat/Makefile.inc @@ -0,0 +1 @@ +ramstage-y += functions.c diff --git a/src/device/oprom/yabel/compat/functions.c b/src/device/oprom/yabel/compat/functions.c new file mode 100644 index 0000000000..542c81f315 --- /dev/null +++ b/src/device/oprom/yabel/compat/functions.c @@ -0,0 +1,59 @@ +/**************************************************************************** + * YABEL BIOS Emulator + * + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Copyright (c) 2008 Pattrick Hueper <phueper@hueper.net> + ****************************************************************************/ + +/* this file contains functions provided by SLOF, that the current biosemu implementation needs + * they should go away inthe future... + */ + +#include <types.h> +#include <string.h> +#include <device/device.h> +#include "../debug.h" +#include "../biosemu.h" +#include "../vbe.h" +#include "../compat/time.h" + +#define VMEM_SIZE (1024 * 1024) /* 1 MB */ + +#if !CONFIG_YABEL_DIRECTHW +#if CONFIG_YABEL_VIRTMEM_LOCATION +u8* vmem = (u8 *) CONFIG_YABEL_VIRTMEM_LOCATION; +#else +u8* vmem = (u8 *) (16*1024*1024); /* default to 16MB */ +#endif +#else +u8* vmem = NULL; +#endif + +void run_bios(struct device * dev, unsigned long addr) +{ + + biosemu(vmem, VMEM_SIZE, dev, addr); + +#if CONFIG_FRAMEBUFFER_SET_VESA_MODE + vbe_set_graphics(); +#endif +} + +unsigned long tb_freq = 0; + +u64 get_time(void) +{ + u64 act; + u32 eax, edx; + + __asm__ __volatile__( + "rdtsc" + : "=a"(eax), "=d"(edx) + : /* no inputs, no clobber */); + act = ((u64) edx << 32) | eax; + return act; +} diff --git a/src/device/oprom/yabel/compat/of.h b/src/device/oprom/yabel/compat/of.h new file mode 100644 index 0000000000..6a00f7a316 --- /dev/null +++ b/src/device/oprom/yabel/compat/of.h @@ -0,0 +1,55 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + + +#ifndef OF_H +#define OF_H +#define p32 int +#define p32cast (int) (unsigned long) (void*) + +#define phandle_t p32 +#define ihandle_t p32 + +typedef struct +{ + unsigned int serv; + int nargs; + int nrets; + unsigned int args[16]; +} of_arg_t; + + +phandle_t of_finddevice (const char *); +phandle_t of_peer (phandle_t); +phandle_t of_child (phandle_t); +phandle_t of_parent (phandle_t); +int of_getprop (phandle_t, const char *, void *, int); +void * of_call_method_3 (const char *, ihandle_t, int); + + +ihandle_t of_open (const char *); +void of_close(ihandle_t); +int of_read (ihandle_t , void*, int); +int of_write (ihandle_t, void*, int); +int of_seek (ihandle_t, int, int); + +void * of_claim(void *, unsigned int , unsigned int ); +void of_release(void *, unsigned int ); + +int of_yield(void); +void * of_set_callback(void *); + +int vpd_read(unsigned int , unsigned int , char *); +int vpd_write(unsigned int , unsigned int , char *); +int write_mm_log(char *, unsigned int , unsigned short ); + +#endif diff --git a/src/device/oprom/yabel/compat/rtas.h b/src/device/oprom/yabel/compat/rtas.h new file mode 100644 index 0000000000..25cabf4d6a --- /dev/null +++ b/src/device/oprom/yabel/compat/rtas.h @@ -0,0 +1,45 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + + +#ifndef RTAS_H +#define RTAS_H + +#include "of.h" + +typedef struct dtime { + unsigned int year; + unsigned int month; + unsigned int day; + unsigned int hour; + unsigned int minute; + unsigned int second; + unsigned int nano; +} dtime; + +typedef void (*thread_t) (int); + +int rtas_token(const char *); +int rtas_call(int, int, int, int *, ...); +void rtas_init(void); +int rtas_pci_config_read (long long, int, int, int, int); +int rtas_pci_config_write (long long, int, int, int, int, int); +int rtas_set_time_of_day(dtime *); +int rtas_get_time_of_day(dtime *); +int rtas_ibm_update_flash_64(long long, long long); +int rtas_ibm_update_flash_64_and_reboot(long long, long long); +int rtas_system_reboot(void); +int rtas_start_cpu (int, thread_t, int); +int rtas_stop_self (void); +int rtas_ibm_manage_flash(int); + +#endif diff --git a/src/device/oprom/yabel/compat/time.h b/src/device/oprom/yabel/compat/time.h new file mode 100644 index 0000000000..18dba3aa85 --- /dev/null +++ b/src/device/oprom/yabel/compat/time.h @@ -0,0 +1,18 @@ +/**************************************************************************** + * YABEL BIOS Emulator + * + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Copyright (c) 2008 Pattrick Hueper <phueper@hueper.net> + ****************************************************************************/ + +#ifndef _BIOSEMU_COMPAT_TIME_H +#define _BIOSEMU_COMPAT_TIME_H + +/* TODO: check how this works in x86 */ +extern unsigned long tb_freq; +u64 get_time(void); +#endif diff --git a/src/device/oprom/yabel/debug.c b/src/device/oprom/yabel/debug.c new file mode 100644 index 0000000000..7cda8af0b1 --- /dev/null +++ b/src/device/oprom/yabel/debug.c @@ -0,0 +1,54 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * Copyright (c) 2008, 2009 Pattrick Hueper <phueper@hueper.net> + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#include "debug.h" + +u32 debug_flags = 0; + +void +dump(u8 * addr, u32 len) +{ + printf("\n%s(%p, %x):\n", __func__, addr, len); + while (len) { + unsigned int tmpCnt = len; + unsigned char x; + if (tmpCnt > 8) + tmpCnt = 8; + printf("\n%p: ", addr); + // print hex + while (tmpCnt--) { + set_ci(); + x = *addr++; + clr_ci(); + printf("%02x ", x); + } + tmpCnt = len; + if (tmpCnt > 8) + tmpCnt = 8; + len -= tmpCnt; + //reset addr ptr to print ascii + addr = addr - tmpCnt; + // print ascii + while (tmpCnt--) { + set_ci(); + x = *addr++; + clr_ci(); + if ((x < 32) || (x >= 127)) { + //non-printable char + x = '.'; + } + printf("%c", x); + } + } + printf("\n"); +} diff --git a/src/device/oprom/yabel/debug.h b/src/device/oprom/yabel/debug.h new file mode 100644 index 0000000000..9361553da7 --- /dev/null +++ b/src/device/oprom/yabel/debug.h @@ -0,0 +1,105 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net> + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ +#ifndef _BIOSEMU_DEBUG_H_ +#define _BIOSEMU_DEBUG_H_ + +#include <types.h> + +extern u32 debug_flags; +// from x86emu...needed for debugging +extern void x86emu_dump_xregs(void); + +/* printf is not available in coreboot... use printk */ +#include <console/console.h> +#include "x86emu/x86emu.h" +#define printf(x...) printk(BIOS_DEBUG, x) + +/* PH: empty versions of set/clr_ci + * TODO: remove! */ +static inline void clr_ci(void) {}; +static inline void set_ci(void) {}; + +/* debug_flags is a binary switch that allows you to select the following items + * to debug. 1=on 0=off. After you decide what you want to debug create the + * binary value, convert to hex and set the option. These options can be + * selected in Kconfig. + * + * |-DEBUG_JMP - print info about JMP and RETF opcodes from x86emu + * ||-DEBUG_TRACE_X86EMU - print _all_ opcodes that are executed by x86emu (WARNING: this will produce a LOT of output) + * |||-Currently unused + * ||||-Currently unused + * |||||-Currently unused + * ||||||-DEBUG_PNP - Print Plug And Play access made by option rom + * |||||||-DEBUG_DISK - Print Disk I/O related messages, currently unused + * ||||||||-DEBUG_PMM - Print messages related to POST Memory Manager (PMM) + * |||||||||-DEBUG_VBE - Print messages related to VESA BIOS Extension (VBE) functions + * ||||||||||-DEBUG_PRINT_INT10 - let INT10 (i.e. character output) calls print messages to Debug output + * |||||||||||-DEBUG_INTR - Print messages related to interrupt handling + * ||||||||||||-DEBUG_CHECK_VMEM_ACCESS - Print messages related to accesse to certain areas of the virtual Memory (e.g. BDA (BIOS Data Area) or Interrupt Vectors) + * |||||||||||||-DEBUG_MEM - Print memory access made by option rom (NOTE: this also includes accesses to fetch instructions) + * ||||||||||||||-DEBUG_IO - Print I/O access made by option rom + * 11000111111111 - Max Binary Value, Debug All (WARNING: - This could run for hours) + */ + +#define DEBUG_IO 0x1 +#define DEBUG_MEM 0x2 +// set this to print messages for certain virtual memory accesses (Interrupt Vectors, ...) +#define DEBUG_CHECK_VMEM_ACCESS 0x4 +#define DEBUG_INTR 0x8 +#define DEBUG_PRINT_INT10 0x10 // set to have the INT10 routine print characters +#define DEBUG_VBE 0x20 +#define DEBUG_PMM 0x40 +#define DEBUG_DISK 0x80 +#define DEBUG_PNP 0x100 + +#define DEBUG_TRACE_X86EMU 0x1000 +// set to enable tracing of JMPs in x86emu +#define DEBUG_JMP 0x2000 + +#if CONFIG_X86EMU_DEBUG + +#define CHECK_DBG(_flag) if (debug_flags & _flag) + +#define DEBUG_PRINTF(_x...) printf(_x); +// prints the CS:IP before the printout, NOTE: actually its CS:IP of the _next_ instruction +// to be executed, since the x86emu advances CS:IP _before_ actually executing an instruction +#define DEBUG_PRINTF_CS_IP(_x...) DEBUG_PRINTF("%x:%x ", M.x86.R_CS, M.x86.R_IP); DEBUG_PRINTF(_x); + +#define DEBUG_PRINTF_IO(_x...) CHECK_DBG(DEBUG_IO) { DEBUG_PRINTF_CS_IP(_x) } +#define DEBUG_PRINTF_MEM(_x...) CHECK_DBG(DEBUG_MEM) { DEBUG_PRINTF_CS_IP(_x) } +#define DEBUG_PRINTF_INTR(_x...) CHECK_DBG(DEBUG_INTR) { DEBUG_PRINTF_CS_IP(_x) } +#define DEBUG_PRINTF_VBE(_x...) CHECK_DBG(DEBUG_VBE) { DEBUG_PRINTF_CS_IP(_x) } +#define DEBUG_PRINTF_PMM(_x...) CHECK_DBG(DEBUG_PMM) { DEBUG_PRINTF_CS_IP(_x) } +#define DEBUG_PRINTF_DISK(_x...) CHECK_DBG(DEBUG_DISK) { DEBUG_PRINTF_CS_IP(_x) } +#define DEBUG_PRINTF_PNP(_x...) CHECK_DBG(DEBUG_PNP) { DEBUG_PRINTF_CS_IP(_x) } + +#else + +#define CHECK_DBG(_flag) if (0) + +#define DEBUG_PRINTF(_x...) +#define DEBUG_PRINTF_CS_IP(_x...) + +#define DEBUG_PRINTF_IO(_x...) +#define DEBUG_PRINTF_MEM(_x...) +#define DEBUG_PRINTF_INTR(_x...) +#define DEBUG_PRINTF_VBE(_x...) +#define DEBUG_PRINTF_PMM(_x...) +#define DEBUG_PRINTF_DISK(_x...) +#define DEBUG_PRINTF_PNP(_x...) + +#endif //DEBUG + +void dump(u8 * addr, u32 len); + +#endif diff --git a/src/device/oprom/yabel/device.c b/src/device/oprom/yabel/device.c new file mode 100644 index 0000000000..b09f50e4ac --- /dev/null +++ b/src/device/oprom/yabel/device.c @@ -0,0 +1,471 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * Copyright (c) 2008, 2009 Pattrick Hueper <phueper@hueper.net> + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + + +#include "device.h" +#include "compat/rtas.h" +#include <string.h> +#include "debug.h" + +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ops.h> +#include <device/resource.h> + +/* the device we are working with... */ +biosemu_device_t bios_device; +//max. 6 BARs and 1 Exp.ROM plus CfgSpace and 3 legacy ranges, plus 2 "special" memory ranges +translate_address_t translate_address_array[13]; +u8 taa_last_entry; + +typedef struct { + u8 info; + u8 bus; + u8 devfn; + u8 cfg_space_offset; + u64 address; + u64 size; +} __attribute__ ((__packed__)) assigned_address_t; + +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL +/* coreboot version */ + +static void +biosemu_dev_get_addr_info(void) +{ + int taa_index = 0; + struct resource *r; + u8 bus = bios_device.dev->bus->secondary; + u16 devfn = bios_device.dev->path.pci.devfn; + + bios_device.bus = bus; + bios_device.devfn = devfn; + + DEBUG_PRINTF("bus: %x, devfn: %x\n", bus, devfn); + for (r = bios_device.dev->resource_list; r; r = r->next) { + translate_address_array[taa_index].info = r->flags; + translate_address_array[taa_index].bus = bus; + translate_address_array[taa_index].devfn = devfn; + translate_address_array[taa_index].cfg_space_offset = + r->index; + translate_address_array[taa_index].address = r->base; + translate_address_array[taa_index].size = r->size; + /* dont translate addresses... all addresses are 1:1 */ + translate_address_array[taa_index].address_offset = 0; + taa_index++; + } + /* Expansion ROM */ + translate_address_array[taa_index].info = IORESOURCE_MEM | IORESOURCE_READONLY; + translate_address_array[taa_index].bus = bus; + translate_address_array[taa_index].devfn = devfn; + translate_address_array[taa_index].cfg_space_offset = 0x30; + translate_address_array[taa_index].address = bios_device.img_addr; + translate_address_array[taa_index].size = 0; /* TODO: do we need the size? */ + /* dont translate addresses... all addresses are 1:1 */ + translate_address_array[taa_index].address_offset = 0; + taa_index++; + /* legacy ranges if its a VGA card... */ + if ((bios_device.dev->class & 0xFF0000) == 0x030000) { + DEBUG_PRINTF("%s: VGA device found, adding legacy resources... \n", __func__); + /* I/O 0x3B0-0x3BB */ + translate_address_array[taa_index].info = IORESOURCE_FIXED | IORESOURCE_IO; + translate_address_array[taa_index].bus = bus; + translate_address_array[taa_index].devfn = devfn; + translate_address_array[taa_index].cfg_space_offset = 0; + translate_address_array[taa_index].address = 0x3b0; + translate_address_array[taa_index].size = 0xc; + /* dont translate addresses... all addresses are 1:1 */ + translate_address_array[taa_index].address_offset = 0; + taa_index++; + /* I/O 0x3C0-0x3DF */ + translate_address_array[taa_index].info = IORESOURCE_FIXED | IORESOURCE_IO; + translate_address_array[taa_index].bus = bus; + translate_address_array[taa_index].devfn = devfn; + translate_address_array[taa_index].cfg_space_offset = 0; + translate_address_array[taa_index].address = 0x3c0; + translate_address_array[taa_index].size = 0x20; + /* dont translate addresses... all addresses are 1:1 */ + translate_address_array[taa_index].address_offset = 0; + taa_index++; + /* Mem 0xA0000-0xBFFFF */ + translate_address_array[taa_index].info = IORESOURCE_FIXED | IORESOURCE_MEM; + translate_address_array[taa_index].bus = bus; + translate_address_array[taa_index].devfn = devfn; + translate_address_array[taa_index].cfg_space_offset = 0; + translate_address_array[taa_index].address = 0xa0000; + translate_address_array[taa_index].size = 0x20000; + /* dont translate addresses... all addresses are 1:1 */ + translate_address_array[taa_index].address_offset = 0; + taa_index++; + } + // store last entry index of translate_address_array + taa_last_entry = taa_index - 1; +#if CONFIG_X86EMU_DEBUG + //dump translate_address_array + printf("translate_address_array: \n"); + translate_address_t ta; + int i; + for (i = 0; i <= taa_last_entry; i++) { + ta = translate_address_array[i]; + printf + ("%d: info: %08lx bus: %02x devfn: %02x cfg_space_offset: %02x\n\taddr: %016llx\n\toffs: %016llx\n\tsize: %016llx\n", + i, ta.info, ta.bus, ta.devfn, ta.cfg_space_offset, + ta.address, ta.address_offset, ta.size); + } +#endif +} +#else +// use translate_address_dev and get_puid from net-snk's net_support.c +void translate_address_dev(u64 *, phandle_t); +u64 get_puid(phandle_t node); + + +// scan all adresses assigned to the device ("assigned-addresses" and "reg") +// store in translate_address_array for faster translation using dev_translate_address +void +biosemu_dev_get_addr_info(void) +{ + // get bus/dev/fn from assigned-addresses + int32_t len; + //max. 6 BARs and 1 Exp.ROM plus CfgSpace and 3 legacy ranges + assigned_address_t buf[11]; + len = + of_getprop(bios_device.phandle, "assigned-addresses", buf, + sizeof(buf)); + bios_device.bus = buf[0].bus; + bios_device.devfn = buf[0].devfn; + DEBUG_PRINTF("bus: %x, devfn: %x\n", bios_device.bus, + bios_device.devfn); + //store address translations for all assigned-addresses and regs in + //translate_address_array for faster translation later on... + int i = 0; + // index to insert data into translate_address_array + int taa_index = 0; + u64 address_offset; + for (i = 0; i < (len / sizeof(assigned_address_t)); i++, taa_index++) { + //copy all info stored in assigned-addresses + translate_address_array[taa_index].info = buf[i].info; + translate_address_array[taa_index].bus = buf[i].bus; + translate_address_array[taa_index].devfn = buf[i].devfn; + translate_address_array[taa_index].cfg_space_offset = + buf[i].cfg_space_offset; + translate_address_array[taa_index].address = buf[i].address; + translate_address_array[taa_index].size = buf[i].size; + // translate first address and store it as address_offset + address_offset = buf[i].address; + translate_address_dev(&address_offset, bios_device.phandle); + translate_address_array[taa_index].address_offset = + address_offset - buf[i].address; + } + //get "reg" property + len = of_getprop(bios_device.phandle, "reg", buf, sizeof(buf)); + for (i = 0; i < (len / sizeof(assigned_address_t)); i++) { + if ((buf[i].size == 0) || (buf[i].cfg_space_offset != 0)) { + // we dont care for ranges with size 0 and + // BARs and Expansion ROM must be in assigned-addresses... so in reg + // we only look for those without config space offset set... + // i.e. the legacy ranges + continue; + } + //copy all info stored in assigned-addresses + translate_address_array[taa_index].info = buf[i].info; + translate_address_array[taa_index].bus = buf[i].bus; + translate_address_array[taa_index].devfn = buf[i].devfn; + translate_address_array[taa_index].cfg_space_offset = + buf[i].cfg_space_offset; + translate_address_array[taa_index].address = buf[i].address; + translate_address_array[taa_index].size = buf[i].size; + // translate first address and store it as address_offset + address_offset = buf[i].address; + translate_address_dev(&address_offset, bios_device.phandle); + translate_address_array[taa_index].address_offset = + address_offset - buf[i].address; + taa_index++; + } + // store last entry index of translate_address_array + taa_last_entry = taa_index - 1; +#if CONFIG_X86EMU_DEBUG + //dump translate_address_array + printf("translate_address_array: \n"); + translate_address_t ta; + for (i = 0; i <= taa_last_entry; i++) { + ta = translate_address_array[i]; + printf + ("%d: %02x%02x%02x%02x\n\taddr: %016llx\n\toffs: %016llx\n\tsize: %016llx\n", + i, ta.info, ta.bus, ta.devfn, ta.cfg_space_offset, + ta.address, ta.address_offset, ta.size); + } +#endif +} +#endif + +// "special memory" is a hack to make some parts of memory fall through to real memory +// (ie. no translation). Necessary if option ROMs attempt DMA there, map registers or +// do similarily crazy things. +void +biosemu_add_special_memory(u32 start, u32 size) +{ + int taa_index = ++taa_last_entry; + translate_address_array[taa_index].info = IORESOURCE_FIXED | IORESOURCE_MEM; + translate_address_array[taa_index].bus = 0; + translate_address_array[taa_index].devfn = 0; + translate_address_array[taa_index].cfg_space_offset = 0; + translate_address_array[taa_index].address = start; + translate_address_array[taa_index].size = size; + /* dont translate addresses... all addresses are 1:1 */ + translate_address_array[taa_index].address_offset = 0; +} + +#if !CONFIG_PCI_OPTION_ROM_RUN_YABEL +// to simulate accesses to legacy VGA Memory (0xA0000-0xBFFFF) +// we look for the first prefetchable memory BAR, if no prefetchable BAR found, +// we use the first memory BAR +// dev_translate_addr will translate accesses to the legacy VGA Memory into the found vmem BAR +static void +biosemu_dev_find_vmem_addr(void) +{ + int i = 0; + translate_address_t ta; + s8 tai_np = -1, tai_p = -1; // translate_address_array index for non-prefetchable and prefetchable memory + //search backwards to find first entry + for (i = taa_last_entry; i >= 0; i--) { + ta = translate_address_array[i]; + if ((ta.cfg_space_offset >= 0x10) + && (ta.cfg_space_offset <= 0x24)) { + //only BARs + if ((ta.info & 0x03) >= 0x02) { + //32/64bit memory + tai_np = i; + if ((ta.info & 0x40) != 0) { + // prefetchable + tai_p = i; + } + } + } + } + if (tai_p != -1) { + ta = translate_address_array[tai_p]; + bios_device.vmem_addr = ta.address; + bios_device.vmem_size = ta.size; + DEBUG_PRINTF + ("%s: Found prefetchable Virtual Legacy Memory BAR: %llx, size: %llx\n", + __func__, bios_device.vmem_addr, + bios_device.vmem_size); + } else if (tai_np != -1) { + ta = translate_address_array[tai_np]; + bios_device.vmem_addr = ta.address; + bios_device.vmem_size = ta.size; + DEBUG_PRINTF + ("%s: Found non-prefetchable Virtual Legacy Memory BAR: %llx, size: %llx", + __func__, bios_device.vmem_addr, + bios_device.vmem_size); + } + // disable vmem + //bios_device.vmem_size = 0; +} + +void +biosemu_dev_get_puid(void) +{ + // get puid + bios_device.puid = get_puid(bios_device.phandle); + DEBUG_PRINTF("puid: 0x%llx\n", bios_device.puid); +} +#endif + +static void +biosemu_dev_get_device_vendor_id(void) +{ + + u32 pci_config_0; +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL + pci_config_0 = pci_read_config32(bios_device.dev, 0x0); +#else + pci_config_0 = + rtas_pci_config_read(bios_device.puid, 4, bios_device.bus, + bios_device.devfn, 0x0); +#endif + bios_device.pci_device_id = + (u16) ((pci_config_0 & 0xFFFF0000) >> 16); + bios_device.pci_vendor_id = (u16) (pci_config_0 & 0x0000FFFF); + DEBUG_PRINTF("PCI Device ID: %04x, PCI Vendor ID: %x\n", + bios_device.pci_device_id, bios_device.pci_vendor_id); +} + +/* Check whether the device has a valid Expansion ROM and search the PCI Data + * Structure and any Expansion ROM Header (using dev_scan_exp_header()) for + * needed information. If the rom_addr parameter is != 0, it is the address of + * the Expansion ROM image and will be used, if it is == 0, the Expansion ROM + * BAR address will be used. + */ +u8 +biosemu_dev_check_exprom(unsigned long rom_base_addr) +{ + int i = 0; + translate_address_t ta; + u16 pci_ds_offset; + pci_data_struct_t pci_ds; + if (rom_base_addr == 0) { + // check for ExpROM Address (Offset 30) in taa + for (i = 0; i <= taa_last_entry; i++) { + ta = translate_address_array[i]; + if (ta.cfg_space_offset == 0x30) { + //translated address + rom_base_addr = ta.address + ta.address_offset; + break; + } + } + } + /* In the ROM there could be multiple Expansion ROM Images... start + * searching them for an x86 image. + */ + do { + if (rom_base_addr == 0) { + printf("Error: no Expansion ROM address found!\n"); + return -1; + } + set_ci(); + u16 rom_signature = in16le((void *) rom_base_addr); + clr_ci(); + if (rom_signature != 0xaa55) { + printf + ("Error: invalid Expansion ROM signature: %02x!\n", + *((u16 *) rom_base_addr)); + return -1; + } + set_ci(); + // at offset 0x18 is the (16bit little-endian) pointer to the PCI Data Structure + pci_ds_offset = in16le((void *) (rom_base_addr + 0x18)); + //copy the PCI Data Structure + memcpy(&pci_ds, (void *) (rom_base_addr + pci_ds_offset), + sizeof(pci_ds)); + clr_ci(); +#if CONFIG_X86EMU_DEBUG + DEBUG_PRINTF("PCI Data Structure @%lx:\n", + rom_base_addr + pci_ds_offset); + dump((void *) &pci_ds, sizeof(pci_ds)); +#endif + if (strncmp((const char *) pci_ds.signature, "PCIR", 4) != 0) { + printf("Invalid PCI Data Structure found!\n"); + break; + } + //little-endian conversion + pci_ds.vendor_id = in16le(&pci_ds.vendor_id); + pci_ds.device_id = in16le(&pci_ds.device_id); + pci_ds.img_length = in16le(&pci_ds.img_length); + pci_ds.pci_ds_length = in16le(&pci_ds.pci_ds_length); +#ifdef DO_THIS_TEST_TWICE + if (pci_ds.vendor_id != bios_device.pci_vendor_id) { + printf + ("Image has invalid Vendor ID: %04x, expected: %04x\n", + pci_ds.vendor_id, bios_device.pci_vendor_id); + break; + } + if (pci_ds.device_id != bios_device.pci_device_id) { + printf + ("Image has invalid Device ID: %04x, expected: %04x\n", + pci_ds.device_id, bios_device.pci_device_id); + break; + } +#endif + DEBUG_PRINTF("Image Length: %d\n", pci_ds.img_length * 512); + DEBUG_PRINTF("Image Code Type: %d\n", pci_ds.code_type); + if (pci_ds.code_type == 0) { + //x86 image + //store image address and image length in bios_device struct + bios_device.img_addr = rom_base_addr; + bios_device.img_size = pci_ds.img_length * 512; + // we found the image, exit the loop + break; + } else { + // no x86 image, check next image (if any) + rom_base_addr += pci_ds.img_length * 512; + } + if ((pci_ds.indicator & 0x80) == 0x80) { + //last image found, exit the loop + DEBUG_PRINTF("Last PCI Expansion ROM Image found.\n"); + break; + } + } + while (bios_device.img_addr == 0); + // in case we did not find a valid x86 Expansion ROM Image + if (bios_device.img_addr == 0) { + printf("Error: no valid x86 Expansion ROM Image found!\n"); + return -1; + } + return 0; +} + +u8 +biosemu_dev_init(struct device * device) +{ + u8 rval = 0; + //init bios_device struct + DEBUG_PRINTF("%s\n", __func__); + memset(&bios_device, 0, sizeof(bios_device)); + +#if !CONFIG_PCI_OPTION_ROM_RUN_YABEL + bios_device.ihandle = of_open(device_name); + if (bios_device.ihandle == 0) { + DEBUG_PRINTF("%s is no valid device!\n", device_name); + return -1; + } + bios_device.phandle = of_finddevice(device_name); +#else + bios_device.dev = device; +#endif + biosemu_dev_get_addr_info(); +#if !CONFIG_PCI_OPTION_ROM_RUN_YABEL + biosemu_dev_find_vmem_addr(); + biosemu_dev_get_puid(); +#endif + biosemu_dev_get_device_vendor_id(); + return rval; +} + +// translate address function using translate_address_array assembled +// by dev_get_addr_info... MUCH faster than calling translate_address_dev +// and accessing client interface for every translation... +// returns: 0 if addr not found in translate_address_array, 1 if found. +u8 +biosemu_dev_translate_address(int type, unsigned long * addr) +{ + int i = 0; + translate_address_t ta; +#if !CONFIG_PCI_OPTION_ROM_RUN_YABEL + /* we dont need this hack for coreboot... we can access legacy areas */ + //check if it is an access to legacy VGA Mem... if it is, map the address + //to the vmem BAR and then translate it... + // (translation info provided by Ben Herrenschmidt) + // NOTE: the translation seems to only work for NVIDIA cards... but it is needed + // to make some NVIDIA cards work at all... + if ((bios_device.vmem_size > 0) + && ((*addr >= 0xA0000) && (*addr < 0xB8000))) { + *addr = (*addr - 0xA0000) * 4 + 2 + bios_device.vmem_addr; + } + if ((bios_device.vmem_size > 0) + && ((*addr >= 0xB8000) && (*addr < 0xC0000))) { + u8 shift = *addr & 1; + *addr &= 0xfffffffe; + *addr = (*addr - 0xB8000) * 4 + shift + bios_device.vmem_addr; + } +#endif + for (i = 0; i <= taa_last_entry; i++) { + ta = translate_address_array[i]; + if ((*addr >= ta.address) && (*addr <= (ta.address + ta.size)) && (ta.info & type)) { + *addr += ta.address_offset; + return 1; + } + } + return 0; +} diff --git a/src/device/oprom/yabel/device.h b/src/device/oprom/yabel/device.h new file mode 100644 index 0000000000..edee44d20e --- /dev/null +++ b/src/device/oprom/yabel/device.h @@ -0,0 +1,185 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * Copyright (c) 2008, 2009 Pattrick Hueper <phueper@hueper.net> + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#ifndef DEVICE_LIB_H +#define DEVICE_LIB_H + +#include <types.h> +#include <arch/byteorder.h> +#include "compat/of.h" +#include "debug.h" + + +// a Expansion Header Struct as defined in Plug and Play BIOS Spec 1.0a Chapter 3.2 +typedef struct { + char signature[4]; // signature + u8 structure_revision; + u8 length; // in 16 byte blocks + u16 next_header_offset; // offset to next Expansion Header as 16bit little-endian value, as offset from the start of the Expansion ROM + u8 reserved; + u8 checksum; // the sum of all bytes of the Expansion Header must be 0 + u32 device_id; // PnP Device ID as 32bit little-endian value + u16 p_manufacturer_string; //16bit little-endian offset from start of Expansion ROM + u16 p_product_string; //16bit little-endian offset from start of Expansion ROM + u8 device_base_type; + u8 device_sub_type; + u8 device_if_type; + u8 device_indicators; + // the following vectors are all 16bit little-endian offsets from start of Expansion ROM + u16 bcv; // Boot Connection Vector + u16 dv; // Disconnect Vector + u16 bev; // Bootstrap Entry Vector + u16 reserved_2; + u16 sriv; // Static Resource Information Vector +} __attribute__ ((__packed__)) exp_header_struct_t; + +// a PCI Data Struct as defined in PCI 2.3 Spec Chapter 6.3.1.2 +typedef struct { + u8 signature[4]; // signature, the String "PCIR" + u16 vendor_id; + u16 device_id; + u16 reserved; + u16 pci_ds_length; // PCI Data Structure Length, 16bit little-endian value + u8 pci_ds_revision; + u8 class_code[3]; + u16 img_length; // length of the Exp.ROM Image, 16bit little-endian value in 512 bytes + u16 img_revision; + u8 code_type; + u8 indicator; + u16 reserved_2; +} __attribute__ ((__packed__)) pci_data_struct_t; + +typedef struct { + u8 bus; + u8 devfn; +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL + struct device* dev; +#else + u64 puid; + phandle_t phandle; + ihandle_t ihandle; +#endif + // store the address of the BAR that is used to simulate + // legacy VGA memory accesses + u64 vmem_addr; + u64 vmem_size; + // used to buffer I/O Accesses, that do not access the I/O Range of the device... + // 64k might be overkill, but we can buffer all I/O accesses... + u8 io_buffer[64 * 1024]; + u16 pci_vendor_id; + u16 pci_device_id; + // translated address of the "PC-Compatible" Expansion ROM Image for this device + unsigned long img_addr; + u32 img_size; // size of the Expansion ROM Image (read from the PCI Data Structure) +} biosemu_device_t; + +typedef struct { +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL + unsigned long info; +#else + u8 info; +#endif + u8 bus; + u8 devfn; + u8 cfg_space_offset; + u64 address; + u64 address_offset; + u64 size; +} __attribute__ ((__packed__)) translate_address_t; + +// array to store address translations for this +// device. Needed for faster address translation, so +// not every I/O or Memory Access needs to call translate_address_dev +// and access the device tree +// 6 BARs, 1 Exp. ROM, 1 Cfg.Space, and 3 Legacy, plus 2 "special" +// translations are supported... this should be enough for +// most devices... for VGA it is enough anyways... +extern translate_address_t translate_address_array[13]; + +// index of last translate_address_array entry +// set by get_dev_addr_info function +extern u8 taa_last_entry; + +// add 1:1 mapped memory regions to translation table +void biosemu_add_special_memory(u32 start, u32 size); + +/* the device we are working with... */ +extern biosemu_device_t bios_device; + +u8 biosemu_dev_init(struct device * device); +// NOTE: for dev_check_exprom to work, biosemu_dev_init MUST be called first! +u8 biosemu_dev_check_exprom(unsigned long rom_base_addr); + +u8 biosemu_dev_translate_address(int type, unsigned long * addr); + +/* endianness swap functions for 16 and 32 bit words + * copied from axon_pciconfig.c + */ +static inline void +out32le(void *addr, u32 val) +{ +#ifdef __i386 + *((u32*) addr) = cpu_to_le32(val); +#else + asm volatile ("stwbrx %0, 0, %1"::"r" (val), "r"(addr)); +#endif +} + +static inline u32 +in32le(void *addr) +{ + u32 val; +#ifdef __i386 + val = cpu_to_le32(*((u32 *) addr)); +#else + asm volatile ("lwbrx %0, 0, %1":"=r" (val):"r"(addr)); +#endif + return val; +} + +static inline void +out16le(void *addr, u16 val) +{ +#ifdef __i386 + *((u16*) addr) = cpu_to_le16(val); +#else + asm volatile ("sthbrx %0, 0, %1"::"r" (val), "r"(addr)); +#endif +} + +static inline u16 +in16le(void *addr) +{ + u16 val; +#ifdef __i386 + val = cpu_to_le16(*((u16*) addr)); +#else + asm volatile ("lhbrx %0, 0, %1":"=r" (val):"r"(addr)); +#endif + return val; +} + +/* debug function, dumps HID1 and HID4 to detect whether caches are on/off */ +static inline void +dumpHID(void) +{ + u64 hid; + //HID1 = 1009 + __asm__ __volatile__("mfspr %0, 1009":"=r"(hid)); + printf("HID1: %016llx\n", hid); + //HID4 = 1012 + __asm__ __volatile__("mfspr %0, 1012":"=r"(hid)); + printf("HID4: %016llx\n", hid); +} + +#endif diff --git a/src/device/oprom/yabel/interrupt.c b/src/device/oprom/yabel/interrupt.c new file mode 100644 index 0000000000..e5b4a3cff4 --- /dev/null +++ b/src/device/oprom/yabel/interrupt.c @@ -0,0 +1,678 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * Copyright (c) 2008, 2009 Pattrick Hueper <phueper@hueper.net> + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#include <types.h> +#include "compat/rtas.h" + +#include "biosemu.h" +#include "mem.h" +#include "device.h" +#include "debug.h" +#include "pmm.h" +#include "interrupt.h" + +#include <x86emu/x86emu.h> +#include "../x86emu/prim_ops.h" + +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL +#include <device/pci.h> +#include <device/pci_ops.h> +#endif + + +//setup to run the code at the address, that the Interrupt Vector points to... +static void +setupInt(int intNum) +{ + DEBUG_PRINTF_INTR("%s(%x): executing interrupt handler @%08x\n", + __func__, intNum, my_rdl(intNum * 4)); + // push current R_FLG... will be popped by IRET + push_word((u16) M.x86.R_FLG); + CLEAR_FLAG(F_IF); + CLEAR_FLAG(F_TF); + // push current CS:IP to the stack, will be popped by IRET + push_word(M.x86.R_CS); + push_word(M.x86.R_IP); + // set CS:IP to the interrupt handler address... so the next executed instruction will + // be the interrupt handler + M.x86.R_CS = my_rdw(intNum * 4 + 2); + M.x86.R_IP = my_rdw(intNum * 4); +} + +// handle int10 (VGA BIOS Interrupt) +static void +handleInt10(void) +{ + // the data for INT10 is stored in BDA (0000:0400h) offset 49h-66h + // function number in AH + //DEBUG_PRINTF_CS_IP("%s:\n", __func__); + //x86emu_dump_xregs(); + //if ((M.x86.R_IP == 0x32c2) && (M.x86.R_SI == 0x1ce2)){ + //X86EMU_trace_on(); + //M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F; + //} + switch (M.x86.R_AH) { + case 0x00: + // set video mode + // BDA offset 49h is current video mode + my_wrb(0x449, M.x86.R_AL); + if (M.x86.R_AL > 7) + M.x86.R_AL = 0x20; + else if (M.x86.R_AL == 6) + M.x86.R_AL = 0x3f; + else + M.x86.R_AL = 0x30; + break; + case 0x01: + // set cursor shape + // ignore + break; + case 0x02: + // set cursor position + // BH: pagenumber, DX: cursor_pos (DH:row, DL:col) + // BDA offset 50h-60h are 8 cursor position words for + // eight possible video pages + my_wrw(0x450 + (M.x86.R_BH * 2), M.x86.R_DX); + break; + case 0x03: + //get cursor position + // BH: pagenumber + // BDA offset 50h-60h are 8 cursor position words for + // eight possible video pages + M.x86.R_AX = 0; + M.x86.R_CH = 0; // start scan line ??? + M.x86.R_CL = 0; // end scan line ??? + M.x86.R_DX = my_rdw(0x450 + (M.x86.R_BH * 2)); + break; + case 0x05: + // set active page + // BDA offset 62h is current page number + my_wrb(0x462, M.x86.R_AL); + break; + case 0x06: + //scroll up windows + break; + case 0x07: + //scroll down windows + break; + case 0x08: + //read character and attribute at position + M.x86.R_AH = 0x07; // white-on-black + M.x86.R_AL = 0x20; // a space... + break; + case 0x09: + // write character and attribute + //AL: char, BH: page number, BL: attribute, CX: number of times to write + //BDA offset 62h is current page number + CHECK_DBG(DEBUG_PRINT_INT10) { + u32 i = 0; + if (M.x86.R_BH == my_rdb(0x462)) { + for (i = 0; i < M.x86.R_CX; i++) + printf("%c", M.x86.R_AL); + } + } + break; + case 0x0a: + // write character + //AL: char, BH: page number, BL: attribute, CX: number of times to write + //BDA offset 62h is current page number + CHECK_DBG(DEBUG_PRINT_INT10) { + u32 i = 0; + if (M.x86.R_BH == my_rdb(0x462)) { + for (i = 0; i < M.x86.R_CX; i++) + printf("%c", M.x86.R_AL); + } + } + break; + case 0x0e: + // teletype output: write character and advance cursor... + //AL: char, BH: page number, BL: attribute + //BDA offset 62h is current page number + CHECK_DBG(DEBUG_PRINT_INT10) { + // we ignore the pagenumber on this call... + //if (M.x86.R_BH == my_rdb(0x462)) + { + printf("%c", M.x86.R_AL); + // for debugging, to read all lines + //if (M.x86.R_AL == 0xd) // carriage return + // printf("\n"); + } + } + break; + case 0x0f: + // get video mode + // BDA offset 49h is current video mode + // BDA offset 62h is current page number + // BDA offset 4ah is columns on screen + M.x86.R_AH = 80; //number of character columns... we hardcode it to 80 + M.x86.R_AL = my_rdb(0x449); + M.x86.R_BH = my_rdb(0x462); + break; + default: + printf("%s(): unknown function (%x) for int10 handler.\n", + __func__, M.x86.R_AH); + DEBUG_PRINTF_INTR("AX=%04x BX=%04x CX=%04x DX=%04x\n", + M.x86.R_AX, M.x86.R_BX, M.x86.R_CX, + M.x86.R_DX); + HALT_SYS(); + break; + } +} + +// this table translates ASCII chars into their XT scan codes: +static u8 keycode_table[256] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0 - 7 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 8 - 15 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 16 - 23 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 24 - 31 + 0x39, 0x02, 0x28, 0x04, 0x05, 0x06, 0x08, 0x28, // 32 - 39 + 0x0a, 0x0b, 0x09, 0x2b, 0x33, 0x0d, 0x34, 0x35, // 40 - 47 + 0x0b, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, // 48 - 55 + 0x09, 0x0a, 0x27, 0x27, 0x33, 0x2b, 0x34, 0x35, // 56 - 63 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 64 - 71 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 72 - 79 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 80 - 87 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 88 - 95 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 96 - 103 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 104 - 111 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 112 - 119 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 120 - 127 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ... + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +} + +; + +static void +translate_keycode(u64 * keycode) +{ + u8 scan_code = 0; + u8 char_code = 0; + if (*keycode < 256) { + scan_code = keycode_table[*keycode]; + char_code = (u8) * keycode & 0xff; + } else { + switch (*keycode) { + case 0x1b50: + // F1 + scan_code = 0x3b; + char_code = 0x0; + break; + default: + printf("%s(): unknown multibyte keycode: %llx\n", + __func__, *keycode); + break; + } + } + //assemble scan/char code in keycode + *keycode = (u64) ((((u16) scan_code) << 8) | char_code); +} + +// handle int16 (Keyboard BIOS Interrupt) +static void +handleInt16(void) +{ + // keyboard buffer is in BIOS Memory Area: + // offset 0x1a (WORD) pointer to next char in keybuffer + // offset 0x1c (WORD) pointer to next insert slot in keybuffer + // offset 0x1e-0x3e: 16 WORD Ring Buffer + // since we currently always read the char from the FW buffer, + // we misuse the ring buffer, we use it as pointer to a u64 that stores + // multi-byte keys (e.g. special keys in VT100 terminal) + // and as long as a key is available (not 0) we dont read further keys + u64 *keycode = (u64 *) (M.mem_base + 0x41e); + s8 c; + // function number in AH + DEBUG_PRINTF_INTR("%s(): Keyboard Interrupt: function: %x.\n", + __func__, M.x86.R_AH); + DEBUG_PRINTF_INTR("AX=%04x BX=%04x CX=%04x DX=%04x\n", M.x86.R_AX, + M.x86.R_BX, M.x86.R_CX, M.x86.R_DX); + switch (M.x86.R_AH) { + case 0x00: + // get keystroke + if (*keycode) { + M.x86.R_AX = (u16) * keycode; + // clear keycode + *keycode = 0; + } else { + M.x86.R_AH = 0x61; // scancode for space key + M.x86.R_AL = 0x20; // a space + } + break; + case 0x01: + // check keystroke + // ZF set = no keystroke + // read first byte of key code + if (*keycode) { + // already read, but not yet taken + CLEAR_FLAG(F_ZF); + M.x86.R_AX = (u16) * keycode; + } else { + /* TODO: we need getchar... */ + c = -1; //getchar(); + if (c == -1) { + // no key available + SET_FLAG(F_ZF); + } else { + *keycode = c; + + // since after an ESC it may take a while to receive the next char, + // we send something that is not shown on the screen, and then try to get + // the next char + // TODO: only after ESC?? what about other multibyte keys + printf("tt%c%c", 0x08, 0x08); // 0x08 == Backspace + + /* TODO: we need getchar... */ + while ((c = -1 /*getchar()*/) != -1) { + *keycode = (*keycode << 8) | c; + DEBUG_PRINTF(" key read: %0llx\n", + *keycode); + } + translate_keycode(keycode); + DEBUG_PRINTF(" translated key: %0llx\n", + *keycode); + if (*keycode == 0) { + //not found + SET_FLAG(F_ZF); + } else { + CLEAR_FLAG(F_ZF); + M.x86.R_AX = (u16) * keycode; + //X86EMU_trace_on(); + //M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F; + } + } + } + break; + default: + printf("%s(): unknown function (%x) for int16 handler.\n", + __func__, M.x86.R_AH); + DEBUG_PRINTF_INTR("AX=%04x BX=%04x CX=%04x DX=%04x\n", + M.x86.R_AX, M.x86.R_BX, M.x86.R_CX, + M.x86.R_DX); + HALT_SYS(); + break; + } +} + +// handle int1a (PCI BIOS Interrupt) +static void +handleInt1a(void) +{ + // function number in AX + u8 bus, devfn, offs; + struct device* dev; + switch (M.x86.R_AX) { + case 0xb101: + // Installation check + CLEAR_FLAG(F_CF); // clear CF + M.x86.R_EDX = 0x20494350; // " ICP" endian swapped "PCI " + M.x86.R_AL = 0x1; // Config Space Mechanism 1 supported + M.x86.R_BX = 0x0210; // PCI Interface Level Version 2.10 + M.x86.R_CL = 0xff; // number of last PCI Bus in system TODO: check! + break; + case 0xb102: + // Find PCI Device + // device_id in CX, vendor_id in DX + // device index in SI (i.e. if multiple devices with same vendor/device id + // are connected). We currently only support device index 0 + // + DEBUG_PRINTF_INTR("%s(): function: %x: PCI Find Device\n", + __func__, M.x86.R_AX); + /* FixME: support SI != 0 */ +#if CONFIG_YABEL_PCI_ACCESS_OTHER_DEVICES + dev = dev_find_device(M.x86.R_DX, M.x86.R_CX, 0); + if (dev != 0) { + DEBUG_PRINTF_INTR + ("%s(): function %x: PCI Find Device --> 0x%04x\n", + __func__, M.x86.R_AX, M.x86.R_BX); + + M.x86.R_BH = dev->bus->secondary; + M.x86.R_BL = dev->path.pci.devfn; + M.x86.R_AH = 0x00; // return code: success + CLEAR_FLAG(F_CF); +#else + // only allow the device to find itself... + if ((M.x86.R_CX == bios_device.pci_device_id) + && (M.x86.R_DX == bios_device.pci_vendor_id) + // device index must be 0 + && (M.x86.R_SI == 0)) { + CLEAR_FLAG(F_CF); + M.x86.R_AH = 0x00; // return code: success + M.x86.R_BH = bios_device.bus; + M.x86.R_BL = bios_device.devfn; +#endif + } else { + DEBUG_PRINTF_INTR + ("%s(): function %x: invalid device/vendor/device index! (%04x/%04x/%02x expected: %04x/%04x/00) \n", + __func__, M.x86.R_AX, M.x86.R_CX, M.x86.R_DX, + M.x86.R_SI, bios_device.pci_device_id, + bios_device.pci_vendor_id); + + SET_FLAG(F_CF); + M.x86.R_AH = 0x86; // return code: device not found + } + break; + case 0xb108: //read configuration byte + case 0xb109: //read configuration word + case 0xb10a: //read configuration dword + bus = M.x86.R_BH; + devfn = M.x86.R_BL; + offs = M.x86.R_DI; + DEBUG_PRINTF_INTR("%s(): function: %x: PCI Config Read from device: bus: %02x, devfn: %02x, offset: %02x\n", + __func__, M.x86.R_AX, bus, devfn, offs); +#if CONFIG_YABEL_PCI_ACCESS_OTHER_DEVICES + dev = dev_find_slot(bus, devfn); + DEBUG_PRINTF_INTR("%s(): function: %x: dev_find_slot() returned: %s\n", + __func__, M.x86.R_AX, dev_path(dev)); + if (dev == 0) { + // fail accesses to non-existent devices... +#else + dev = bios_device.dev; + if ((bus != bios_device.bus) + || (devfn != bios_device.devfn)) { + // fail accesses to any device but ours... +#endif + printf + ("%s(): Config read access invalid device! bus: %02x (%02x), devfn: %02x (%02x), offs: %02x\n", + __func__, bus, bios_device.bus, devfn, + bios_device.devfn, offs); + SET_FLAG(F_CF); + M.x86.R_AH = 0x87; //return code: bad pci register + HALT_SYS(); + return; + } else { + switch (M.x86.R_AX) { + case 0xb108: + M.x86.R_CL = +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL + pci_read_config8(dev, offs); +#else + (u8) rtas_pci_config_read(bios_device. + puid, 1, + bus, devfn, + offs); +#endif + DEBUG_PRINTF_INTR + ("%s(): function %x: PCI Config Read @%02x --> 0x%02x\n", + __func__, M.x86.R_AX, offs, + M.x86.R_CL); + break; + case 0xb109: + M.x86.R_CX = +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL + pci_read_config16(dev, offs); +#else + (u16) rtas_pci_config_read(bios_device. + puid, 2, + bus, devfn, + offs); +#endif + DEBUG_PRINTF_INTR + ("%s(): function %x: PCI Config Read @%02x --> 0x%04x\n", + __func__, M.x86.R_AX, offs, + M.x86.R_CX); + break; + case 0xb10a: + M.x86.R_ECX = +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL + pci_read_config32(dev, offs); +#else + (u32) rtas_pci_config_read(bios_device. + puid, 4, + bus, devfn, + offs); +#endif + DEBUG_PRINTF_INTR + ("%s(): function %x: PCI Config Read @%02x --> 0x%08x\n", + __func__, M.x86.R_AX, offs, + M.x86.R_ECX); + break; + } + CLEAR_FLAG(F_CF); + M.x86.R_AH = 0x0; // return code: success + } + break; + case 0xb10b: //write configuration byte + case 0xb10c: //write configuration word + case 0xb10d: //write configuration dword + bus = M.x86.R_BH; + devfn = M.x86.R_BL; + offs = M.x86.R_DI; + if ((bus != bios_device.bus) + || (devfn != bios_device.devfn)) { + // fail accesses to any device but ours... + printf + ("%s(): Config read access invalid! bus: %x (%x), devfn: %x (%x), offs: %x\n", + __func__, bus, bios_device.bus, devfn, + bios_device.devfn, offs); + SET_FLAG(F_CF); + M.x86.R_AH = 0x87; //return code: bad pci register + HALT_SYS(); + return; + } else { + switch (M.x86.R_AX) { + case 0xb10b: +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL + pci_write_config8(bios_device.dev, offs, M.x86.R_CL); +#else + rtas_pci_config_write(bios_device.puid, 1, bus, + devfn, offs, M.x86.R_CL); +#endif + DEBUG_PRINTF_INTR + ("%s(): function %x: PCI Config Write @%02x <-- 0x%02x\n", + __func__, M.x86.R_AX, offs, + M.x86.R_CL); + break; + case 0xb10c: +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL + pci_write_config16(bios_device.dev, offs, M.x86.R_CX); +#else + rtas_pci_config_write(bios_device.puid, 2, bus, + devfn, offs, M.x86.R_CX); +#endif + DEBUG_PRINTF_INTR + ("%s(): function %x: PCI Config Write @%02x <-- 0x%04x\n", + __func__, M.x86.R_AX, offs, + M.x86.R_CX); + break; + case 0xb10d: +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL + pci_write_config32(bios_device.dev, offs, M.x86.R_ECX); +#else + rtas_pci_config_write(bios_device.puid, 4, bus, + devfn, offs, M.x86.R_ECX); +#endif + DEBUG_PRINTF_INTR + ("%s(): function %x: PCI Config Write @%02x <-- 0x%08x\n", + __func__, M.x86.R_AX, offs, + M.x86.R_ECX); + break; + } + CLEAR_FLAG(F_CF); + M.x86.R_AH = 0x0; // return code: success + } + break; + default: + printf("%s(): unknown function (%x) for int1a handler.\n", + __func__, M.x86.R_AX); + DEBUG_PRINTF_INTR("AX=%04x BX=%04x CX=%04x DX=%04x\n", + M.x86.R_AX, M.x86.R_BX, M.x86.R_CX, + M.x86.R_DX); + HALT_SYS(); + break; + } +} + +// main Interrupt Handler routine, should be registered as x86emu interrupt handler +void +handleInterrupt(int intNum) +{ + u8 int_handled = 0; +#ifndef DEBUG_PRINT_INT10 + // this printf makes output by int 10 unreadable... + // so we only enable it, if int10 print is disabled + DEBUG_PRINTF_INTR("%s(%x)\n", __func__, intNum); +#endif + + /* check wether this interrupt has a function pointer set in yabel_intFuncArray and run that */ + if (yabel_intFuncArray[intNum]) { + DEBUG_PRINTF_INTR("%s(%x) intHandler overridden, calling it...\n", __func__, intNum); + int_handled = (*yabel_intFuncArray[intNum])(); + } else { + switch (intNum) { + case 0x10: //BIOS video interrupt + case 0x42: // INT 10h relocated by EGA/VGA BIOS + case 0x6d: // INT 10h relocated by VGA BIOS + // get interrupt vector from IDT (4 bytes per Interrupt starting at address 0 + if ((my_rdl(intNum * 4) == 0xF000F065) || //F000:F065 is default BIOS interrupt handler address + (my_rdl(intNum * 4) == 0xF4F4F4F4)) //invalid + { +#if 0 + // ignore interrupt... + DEBUG_PRINTF_INTR + ("%s(%x): invalid interrupt Vector (%08x) found, interrupt ignored...\n", + __func__, intNum, my_rdl(intNum * 4)); + DEBUG_PRINTF_INTR("AX=%04x BX=%04x CX=%04x DX=%04x\n", + M.x86.R_AX, M.x86.R_BX, M.x86.R_CX, + M.x86.R_DX); + //HALT_SYS(); +#endif + handleInt10(); + int_handled = 1; + } + break; + case 0x16: + // Keyboard BIOS Interrupt + handleInt16(); + int_handled = 1; + break; + case 0x1a: + // PCI BIOS Interrupt + handleInt1a(); + int_handled = 1; + break; + case PMM_INT_NUM: + /* The self-defined PMM INT number, this is called by + * the code in PMM struct, and it is handled by + * pmm_handleInt() + */ + pmm_handleInt(); + int_handled = 1; + break; + default: + printf("Interrupt %#x (Vector: %x) not implemented\n", intNum, + my_rdl(intNum * 4)); + DEBUG_PRINTF_INTR("AX=%04x BX=%04x CX=%04x DX=%04x\n", + M.x86.R_AX, M.x86.R_BX, M.x86.R_CX, + M.x86.R_DX); + int_handled = 1; + HALT_SYS(); + break; + } + } + // if we did not handle the interrupt, jump to the interrupt vector... + if (!int_handled) { + setupInt(intNum); + } +} + +// prepare and execute Interrupt 10 (VGA Interrupt) +void +runInt10(void) +{ + // Initialize stack and data segment + M.x86.R_SS = STACK_SEGMENT; + M.x86.R_DS = DATA_SEGMENT; + M.x86.R_SP = STACK_START_OFFSET; + + // push a HLT instruction and a pointer to it onto the stack + // any return will pop the pointer and jump to the HLT, thus + // exiting (more or less) cleanly + push_word(0xf4f4); //F4=HLT + //push_word(M.x86.R_SS); + //push_word(M.x86.R_SP + 2); + + // setupInt will push the current CS and IP to the stack to return to it, + // but we want to halt, so set CS:IP to the HLT instruction we just pushed + // to the stack + M.x86.R_CS = M.x86.R_SS; + M.x86.R_IP = M.x86.R_SP; // + 4; + + CHECK_DBG(DEBUG_TRACE_X86EMU) { + X86EMU_trace_on(); + } + CHECK_DBG(DEBUG_JMP) { + M.x86.debug |= DEBUG_TRACEJMP_REGS_F; + M.x86.debug |= DEBUG_TRACEJMP_REGS_F; + M.x86.debug |= DEBUG_TRACECALL_F; + M.x86.debug |= DEBUG_TRACECALL_REGS_F; + } + setupInt(0x10); + DEBUG_PRINTF_INTR("%s(): starting execution of INT10...\n", + __func__); + X86EMU_exec(); + DEBUG_PRINTF_INTR("%s(): execution finished\n", __func__); +} + +// prepare and execute Interrupt 13 (Disk Interrupt) +void +runInt13(void) +{ + // Initialize stack and data segment + M.x86.R_SS = STACK_SEGMENT; + M.x86.R_DS = DATA_SEGMENT; + M.x86.R_SP = STACK_START_OFFSET; + + // push a HLT instruction and a pointer to it onto the stack + // any return will pop the pointer and jump to the HLT, thus + // exiting (more or less) cleanly + push_word(0xf4f4); //F4=HLT + //push_word(M.x86.R_SS); + //push_word(M.x86.R_SP + 2); + + // setupInt will push the current CS and IP to the stack to return to it, + // but we want to halt, so set CS:IP to the HLT instruction we just pushed + // to the stack + M.x86.R_CS = M.x86.R_SS; + M.x86.R_IP = M.x86.R_SP; + + CHECK_DBG(DEBUG_TRACE_X86EMU) { + X86EMU_trace_on(); + } + CHECK_DBG(DEBUG_JMP) { + M.x86.debug |= DEBUG_TRACEJMP_REGS_F; + M.x86.debug |= DEBUG_TRACEJMP_REGS_F; + M.x86.debug |= DEBUG_TRACECALL_F; + M.x86.debug |= DEBUG_TRACECALL_REGS_F; + } + + setupInt(0x13); + DEBUG_PRINTF_INTR("%s(): starting execution of INT13...\n", + __func__); + X86EMU_exec(); + DEBUG_PRINTF_INTR("%s(): execution finished\n", __func__); +} diff --git a/src/device/oprom/yabel/interrupt.h b/src/device/oprom/yabel/interrupt.h new file mode 100644 index 0000000000..11755e102a --- /dev/null +++ b/src/device/oprom/yabel/interrupt.h @@ -0,0 +1,21 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ +#ifndef _BIOSEMU_INTERRUPT_H_ +#define _BIOSEMU_INTERRUPT_H_ + +void handleInterrupt(int intNum); + +void runInt10(void); + +void runInt13(void); + +#endif diff --git a/src/device/oprom/yabel/io.c b/src/device/oprom/yabel/io.c new file mode 100644 index 0000000000..5c19b5142c --- /dev/null +++ b/src/device/oprom/yabel/io.c @@ -0,0 +1,577 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net> + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#include <types.h> +#include "compat/rtas.h" +#include "compat/time.h" +#include "device.h" +#include "debug.h" +#include <x86emu/x86emu.h> +#include "io.h" + +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL +#include <device/pci.h> +#include <device/pci_ops.h> +#include <device/resource.h> +#endif + +#if CONFIG_ARCH_X86 +#include <arch/io.h> +#else +// these are not used, only needed for linking, must be overridden using X86emu_setupPioFuncs +// with the functions and struct below +void +outb(u8 val, u16 port) +{ + printf("WARNING: outb not implemented!\n"); + HALT_SYS(); +} + +void +outw(u16 val, u16 port) +{ + printf("WARNING: outw not implemented!\n"); + HALT_SYS(); +} + +void +outl(u32 val, u16 port) +{ + printf("WARNING: outl not implemented!\n"); + HALT_SYS(); +} + +u8 +inb(u16 port) +{ + printf("WARNING: inb not implemented!\n"); + HALT_SYS(); + return 0; +} + +u16 +inw(u16 port) +{ + printf("WARNING: inw not implemented!\n"); + HALT_SYS(); + return 0; +} + +u32 +inl(u16 port) +{ + printf("WARNING: inl not implemented!\n"); + HALT_SYS(); + return 0; +} +#endif + +#if CONFIG_YABEL_DIRECTHW +u8 my_inb(X86EMU_pioAddr addr) +{ + u8 val; + + val = inb(addr); + DEBUG_PRINTF_IO("inb(0x%04x) = 0x%02x\n", addr, val); + + return val; +} + +u16 my_inw(X86EMU_pioAddr addr) +{ + u16 val; + + val = inw(addr); + DEBUG_PRINTF_IO("inw(0x%04x) = 0x%04x\n", addr, val); + + return val; +} + +u32 my_inl(X86EMU_pioAddr addr) +{ + u32 val; + + val = inl(addr); + DEBUG_PRINTF_IO("inl(0x%04x) = 0x%08x\n", addr, val); + + return val; +} + +void my_outb(X86EMU_pioAddr addr, u8 val) +{ + DEBUG_PRINTF_IO("outb(0x%02x, 0x%04x)\n", val, addr); + outb(val, addr); +} + +void my_outw(X86EMU_pioAddr addr, u16 val) +{ + DEBUG_PRINTF_IO("outw(0x%04x, 0x%04x)\n", val, addr); + outw(val, addr); +} + +void my_outl(X86EMU_pioAddr addr, u32 val) +{ + DEBUG_PRINTF_IO("outl(0x%08x, 0x%04x)\n", val, addr); + outl(val, addr); +} + +#else + +static unsigned int +read_io(void *addr, size_t sz) +{ + unsigned int ret; + /* since we are using inb instructions, we need the port number as 16bit value */ + u16 port = (u16)(u32) addr; + + switch (sz) { + case 1: + asm volatile ("inb %1, %b0" : "=a"(ret) : "d" (port)); + break; + case 2: + asm volatile ("inw %1, %w0" : "=a"(ret) : "d" (port)); + break; + case 4: + asm volatile ("inl %1, %0" : "=a"(ret) : "d" (port)); + break; + default: + ret = 0; + } + + return ret; +} + +static int +write_io(void *addr, unsigned int value, size_t sz) +{ + u16 port = (u16)(u32) addr; + switch (sz) { + /* since we are using inb instructions, we need the port number as 16bit value */ + case 1: + asm volatile ("outb %b0, %1" : : "a"(value), "d" (port)); + break; + case 2: + asm volatile ("outw %w0, %1" : : "a"(value), "d" (port)); + break; + case 4: + asm volatile ("outl %0, %1" : : "a"(value), "d" (port)); + break; + default: + return -1; + } + + return 0; +} + +u32 pci_cfg_read(X86EMU_pioAddr addr, u8 size); +void pci_cfg_write(X86EMU_pioAddr addr, u32 val, u8 size); +u8 handle_port_61h(void); + +u8 +my_inb(X86EMU_pioAddr addr) +{ + u8 rval = 0xFF; + unsigned long translated_addr = addr; + u8 translated = biosemu_dev_translate_address(IORESOURCE_IO, &translated_addr); + if (translated != 0) { + //translation successfull, access Device I/O (BAR or Legacy...) + DEBUG_PRINTF_IO("%s(%x): access to Device I/O\n", __func__, + addr); + //DEBUG_PRINTF_IO("%s(%04x): translated_addr: %llx\n", __func__, addr, translated_addr); + rval = read_io((void *)translated_addr, 1); + DEBUG_PRINTF_IO("%s(%04x) Device I/O --> %02x\n", __func__, + addr, rval); + return rval; + } else { + switch (addr) { + case 0x61: + //8254 KB Controller / Timer Port + // rval = handle_port_61h(); + rval = inb(0x61); + //DEBUG_PRINTF_IO("%s(%04x) KB / Timer Port B --> %02x\n", __func__, addr, rval); + return rval; + break; + case 0xCFC: + case 0xCFD: + case 0xCFE: + case 0xCFF: + // PCI Config Mechanism 1 Ports + return (u8) pci_cfg_read(addr, 1); + break; + case 0x0a: + CHECK_DBG(DEBUG_INTR) { + X86EMU_trace_on(); + } + M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F; + //HALT_SYS(); + // no break, intentional fall-through to default!! + default: + DEBUG_PRINTF_IO + ("%s(%04x) reading from bios_device.io_buffer\n", + __func__, addr); + rval = *((u8 *) (bios_device.io_buffer + addr)); + DEBUG_PRINTF_IO("%s(%04x) I/O Buffer --> %02x\n", + __func__, addr, rval); + return rval; + break; + } + } +} + +u16 +my_inw(X86EMU_pioAddr addr) +{ + unsigned long translated_addr = addr; + u8 translated = biosemu_dev_translate_address(IORESOURCE_IO, &translated_addr); + if (translated != 0) { + //translation successfull, access Device I/O (BAR or Legacy...) + DEBUG_PRINTF_IO("%s(%x): access to Device I/O\n", __func__, + addr); + //DEBUG_PRINTF_IO("%s(%04x): translated_addr: %llx\n", __func__, addr, translated_addr); + u16 rval; + if ((translated_addr & (u64) 0x1) == 0) { + // 16 bit aligned access... + u16 tempval = read_io((void *)translated_addr, 2); + //little endian conversion + rval = in16le((void *) &tempval); + } else { + // unaligned access, read single bytes, little-endian + rval = (read_io((void *)translated_addr, 1) << 8) + | (read_io((void *)(translated_addr + 1), 1)); + } + DEBUG_PRINTF_IO("%s(%04x) Device I/O --> %04x\n", __func__, + addr, rval); + return rval; + } else { + switch (addr) { + case 0xCFC: + case 0xCFE: + //PCI Config Mechanism 1 + return (u16) pci_cfg_read(addr, 2); + break; + default: + DEBUG_PRINTF_IO + ("%s(%04x) reading from bios_device.io_buffer\n", + __func__, addr); + u16 rval = + in16le((void *) bios_device.io_buffer + addr); + DEBUG_PRINTF_IO("%s(%04x) I/O Buffer --> %04x\n", + __func__, addr, rval); + return rval; + break; + } + } +} + +u32 +my_inl(X86EMU_pioAddr addr) +{ + unsigned long translated_addr = addr; + u8 translated = biosemu_dev_translate_address(IORESOURCE_IO, &translated_addr); + if (translated != 0) { + //translation successfull, access Device I/O (BAR or Legacy...) + DEBUG_PRINTF_IO("%s(%x): access to Device I/O\n", __func__, + addr); + //DEBUG_PRINTF_IO("%s(%04x): translated_addr: %llx\n", __func__, addr, translated_addr); + u32 rval; + if ((translated_addr & (u64) 0x3) == 0) { + // 32 bit aligned access... + u32 tempval = read_io((void *) translated_addr, 4); + //little endian conversion + rval = in32le((void *) &tempval); + } else { + // unaligned access, read single bytes, little-endian + rval = (read_io((void *)(translated_addr), 1) << 24) + | (read_io((void *)(translated_addr + 1), 1) << 16) + | (read_io((void *)(translated_addr + 2), 1) << 8) + | (read_io((void *)(translated_addr + 3), 1)); + } + DEBUG_PRINTF_IO("%s(%04x) Device I/O --> %08x\n", __func__, + addr, rval); + return rval; + } else { + switch (addr) { + case 0xCFC: + //PCI Config Mechanism 1 + return pci_cfg_read(addr, 4); + break; + default: + DEBUG_PRINTF_IO + ("%s(%04x) reading from bios_device.io_buffer\n", + __func__, addr); + u32 rval = + in32le((void *) bios_device.io_buffer + addr); + DEBUG_PRINTF_IO("%s(%04x) I/O Buffer --> %08x\n", + __func__, addr, rval); + return rval; + break; + } + } +} + +void +my_outb(X86EMU_pioAddr addr, u8 val) +{ + unsigned long translated_addr = addr; + u8 translated = biosemu_dev_translate_address(IORESOURCE_IO, &translated_addr); + if (translated != 0) { + //translation successfull, access Device I/O (BAR or Legacy...) + DEBUG_PRINTF_IO("%s(%x, %x): access to Device I/O\n", + __func__, addr, val); + //DEBUG_PRINTF_IO("%s(%04x): translated_addr: %llx\n", __func__, addr, translated_addr); + write_io((void *) translated_addr, val, 1); + DEBUG_PRINTF_IO("%s(%04x) Device I/O <-- %02x\n", __func__, + addr, val); + } else { + switch (addr) { + case 0xCFC: + case 0xCFD: + case 0xCFE: + case 0xCFF: + // PCI Config Mechanism 1 Ports + pci_cfg_write(addr, val, 1); + break; + default: + DEBUG_PRINTF_IO + ("%s(%04x,%02x) writing to bios_device.io_buffer\n", + __func__, addr, val); + *((u8 *) (bios_device.io_buffer + addr)) = val; + break; + } + } +} + +void +my_outw(X86EMU_pioAddr addr, u16 val) +{ + unsigned long translated_addr = addr; + u8 translated = biosemu_dev_translate_address(IORESOURCE_IO, &translated_addr); + if (translated != 0) { + //translation successfull, access Device I/O (BAR or Legacy...) + DEBUG_PRINTF_IO("%s(%x, %x): access to Device I/O\n", + __func__, addr, val); + //DEBUG_PRINTF_IO("%s(%04x): translated_addr: %llx\n", __func__, addr, translated_addr); + if ((translated_addr & (u64) 0x1) == 0) { + // little-endian conversion + u16 tempval = in16le((void *) &val); + // 16 bit aligned access... + write_io((void *) translated_addr, tempval, 2); + } else { + // unaligned access, write single bytes, little-endian + write_io(((void *) (translated_addr + 1)), + (u8) ((val & 0xFF00) >> 8), 1); + write_io(((void *) translated_addr), + (u8) (val & 0x00FF), 1); + } + DEBUG_PRINTF_IO("%s(%04x) Device I/O <-- %04x\n", __func__, + addr, val); + } else { + switch (addr) { + case 0xCFC: + case 0xCFE: + // PCI Config Mechanism 1 Ports + pci_cfg_write(addr, val, 2); + break; + default: + DEBUG_PRINTF_IO + ("%s(%04x,%04x) writing to bios_device.io_buffer\n", + __func__, addr, val); + out16le((void *) bios_device.io_buffer + addr, val); + break; + } + } +} + +void +my_outl(X86EMU_pioAddr addr, u32 val) +{ + unsigned long translated_addr = addr; + u8 translated = biosemu_dev_translate_address(IORESOURCE_IO, &translated_addr); + if (translated != 0) { + //translation successfull, access Device I/O (BAR or Legacy...) + DEBUG_PRINTF_IO("%s(%x, %x): access to Device I/O\n", + __func__, addr, val); + //DEBUG_PRINTF_IO("%s(%04x): translated_addr: %llx\n", __func__, addr, translated_addr); + if ((translated_addr & (u64) 0x3) == 0) { + // little-endian conversion + u32 tempval = in32le((void *) &val); + // 32 bit aligned access... + write_io((void *) translated_addr, tempval, 4); + } else { + // unaligned access, write single bytes, little-endian + write_io(((void *) translated_addr + 3), + (u8) ((val & 0xFF000000) >> 24), 1); + write_io(((void *) translated_addr + 2), + (u8) ((val & 0x00FF0000) >> 16), 1); + write_io(((void *) translated_addr + 1), + (u8) ((val & 0x0000FF00) >> 8), 1); + write_io(((void *) translated_addr), + (u8) (val & 0x000000FF), 1); + } + DEBUG_PRINTF_IO("%s(%04x) Device I/O <-- %08x\n", __func__, + addr, val); + } else { + switch (addr) { + case 0xCFC: + // PCI Config Mechanism 1 Ports + pci_cfg_write(addr, val, 4); + break; + default: + DEBUG_PRINTF_IO + ("%s(%04x,%08x) writing to bios_device.io_buffer\n", + __func__, addr, val); + out32le((void *) bios_device.io_buffer + addr, val); + break; + } + } +} + +u32 +pci_cfg_read(X86EMU_pioAddr addr, u8 size) +{ + u32 rval = 0xFFFFFFFF; + struct device * dev; + if ((addr >= 0xCFC) && ((addr + size) <= 0xD00)) { + // PCI Configuration Mechanism 1 step 1 + // write to 0xCF8, sets bus, device, function and Config Space offset + // later read from 0xCFC-0xCFF returns the value... + u8 bus, devfn, offs; + u32 port_cf8_val = my_inl(0xCF8); + if ((port_cf8_val & 0x80000000) != 0) { + //highest bit enables config space mapping + bus = (port_cf8_val & 0x00FF0000) >> 16; + devfn = (port_cf8_val & 0x0000FF00) >> 8; + offs = (port_cf8_val & 0x000000FF); + offs += (addr - 0xCFC); // if addr is not 0xcfc, the offset is moved accordingly + DEBUG_PRINTF_INTR("%s(): PCI Config Read from device: bus: %02x, devfn: %02x, offset: %02x\n", + __func__, bus, devfn, offs); +#if CONFIG_YABEL_PCI_ACCESS_OTHER_DEVICES + dev = dev_find_slot(bus, devfn); + DEBUG_PRINTF_INTR("%s(): dev_find_slot() returned: %s\n", + __func__, dev_path(dev)); + if (dev == 0) { + // fail accesses to non-existent devices... +#else + dev = bios_device.dev; + if ((bus != bios_device.bus) + || (devfn != bios_device.devfn)) { + // fail accesses to any device but ours... +#endif + printf + ("%s(): Config read access invalid device! bus: %02x (%02x), devfn: %02x (%02x), offs: %02x\n", + __func__, bus, bios_device.bus, devfn, + bios_device.devfn, offs); + SET_FLAG(F_CF); + HALT_SYS(); + return 0; + } else { +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL + switch (size) { + case 1: + rval = pci_read_config8(dev, offs); + break; + case 2: + rval = pci_read_config16(dev, offs); + break; + case 4: + rval = pci_read_config32(dev, offs); + break; + } +#else + rval = + (u32) rtas_pci_config_read(bios_device. + puid, size, + bus, devfn, + offs); +#endif + DEBUG_PRINTF_IO + ("%s(%04x) PCI Config Read @%02x, size: %d --> 0x%08x\n", + __func__, addr, offs, size, rval); + } + } + } + return rval; +} + +void +pci_cfg_write(X86EMU_pioAddr addr, u32 val, u8 size) +{ + if ((addr >= 0xCFC) && ((addr + size) <= 0xD00)) { + // PCI Configuration Mechanism 1 step 1 + // write to 0xCF8, sets bus, device, function and Config Space offset + // later write to 0xCFC-0xCFF sets the value... + u8 bus, devfn, offs; + u32 port_cf8_val = my_inl(0xCF8); + if ((port_cf8_val & 0x80000000) != 0) { + //highest bit enables config space mapping + bus = (port_cf8_val & 0x00FF0000) >> 16; + devfn = (port_cf8_val & 0x0000FF00) >> 8; + offs = (port_cf8_val & 0x000000FF); + offs += (addr - 0xCFC); // if addr is not 0xcfc, the offset is moved accordingly + if ((bus != bios_device.bus) + || (devfn != bios_device.devfn)) { + // fail accesses to any device but ours... + printf + ("Config write access invalid! PCI device %x:%x.%x, offs: %x\n", + bus, devfn >> 3, devfn & 7, offs); +#if !CONFIG_YABEL_PCI_FAKE_WRITING_OTHER_DEVICES_CONFIG + HALT_SYS(); +#endif + } else { +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL + switch (size) { + case 1: + pci_write_config8(bios_device.dev, offs, val); + break; + case 2: + pci_write_config16(bios_device.dev, offs, val); + break; + case 4: + pci_write_config32(bios_device.dev, offs, val); + break; + } +#else + rtas_pci_config_write(bios_device.puid, + size, bus, devfn, offs, + val); +#endif + DEBUG_PRINTF_IO + ("%s(%04x) PCI Config Write @%02x, size: %d <-- 0x%08x\n", + __func__, addr, offs, size, val); + } + } + } +} + +u8 +handle_port_61h(void) +{ + static u64 last_time = 0; + u64 curr_time = get_time(); + u64 time_diff; // time since last call + u32 period_ticks; // length of a period in ticks + u32 nr_periods; //number of periods passed since last call + // bit 4 should toggle with every (DRAM) refresh cycle... (66kHz??) + time_diff = curr_time - last_time; + // at 66kHz a period is ~ 15 ns long, converted to ticks: (tb_freq is ticks/second) + // TODO: as long as the frequency does not change, we should not calculate this every time + period_ticks = (15 * tb_freq) / 1000000; + nr_periods = time_diff / period_ticks; + // if the number if ticks passed since last call is odd, we toggle bit 4 + if ((nr_periods % 2) != 0) { + *((u8 *) (bios_device.io_buffer + 0x61)) ^= 0x10; + } + //finally read the value from the io_buffer + return *((u8 *) (bios_device.io_buffer + 0x61)); +} +#endif diff --git a/src/device/oprom/yabel/io.h b/src/device/oprom/yabel/io.h new file mode 100644 index 0000000000..6b2dcc4504 --- /dev/null +++ b/src/device/oprom/yabel/io.h @@ -0,0 +1,30 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#ifndef _BIOSEMU_IO_H_ +#define _BIOSEMU_IO_H_ +#include <x86emu/x86emu.h> +#include <types.h> + +u8 my_inb(X86EMU_pioAddr addr); + +u16 my_inw(X86EMU_pioAddr addr); + +u32 my_inl(X86EMU_pioAddr addr); + +void my_outb(X86EMU_pioAddr addr, u8 val); + +void my_outw(X86EMU_pioAddr addr, u16 val); + +void my_outl(X86EMU_pioAddr addr, u32 val); + +#endif diff --git a/src/device/oprom/yabel/mem.c b/src/device/oprom/yabel/mem.c new file mode 100644 index 0000000000..4b4a552813 --- /dev/null +++ b/src/device/oprom/yabel/mem.c @@ -0,0 +1,501 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net> + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#include <types.h> +#include "debug.h" +#include "device.h" +#include "x86emu/x86emu.h" +#include "biosemu.h" +#include "mem.h" +#include "compat/time.h" + +#if !CONFIG_YABEL_DIRECTHW || !CONFIG_YABEL_DIRECTHW + +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL +#include <device/resource.h> +#endif + +// define a check for access to certain (virtual) memory regions (interrupt handlers, BIOS Data Area, ...) +#if CONFIG_X86EMU_DEBUG +static u8 in_check = 0; // to avoid recursion... + +static inline void DEBUG_CHECK_VMEM_READ(u32 _addr, u32 _rval) +{ + u16 ebda_segment; + u32 ebda_size; + if (!((debug_flags & DEBUG_CHECK_VMEM_ACCESS) && (in_check == 0))) + return; + in_check = 1; + /* determine ebda_segment and size + * since we are using my_rdx calls, make sure, this is after setting in_check! */ + /* offset 03 in BDA is EBDA segment */ + ebda_segment = my_rdw(0x40e); + /* first value in ebda is size in KB */ + ebda_size = my_rdb(ebda_segment << 4) * 1024; + /* check Interrupt Vector Access (0000:0000h - 0000:0400h) */ + if (_addr < 0x400) { + DEBUG_PRINTF_CS_IP("%s: read from Interrupt Vector %x --> %x\n", + __func__, _addr / 4, _rval); + } + /* access to BIOS Data Area (0000:0400h - 0000:0500h)*/ + else if ((_addr >= 0x400) && (_addr < 0x500)) { + DEBUG_PRINTF_CS_IP("%s: read from BIOS Data Area: addr: %x --> %x\n", + __func__, _addr, _rval); + /* dump registers */ + /* x86emu_dump_xregs(); */ + } + /* access to first 64k of memory... */ + else if (_addr < 0x10000) { + DEBUG_PRINTF_CS_IP("%s: read from segment 0000h: addr: %x --> %x\n", + __func__, _addr, _rval); + /* dump registers */ + /* x86emu_dump_xregs(); */ + } + /* read from PMM_CONV_SEGMENT */ + else if ((_addr <= ((PMM_CONV_SEGMENT << 4) | 0xffff)) && (_addr >= (PMM_CONV_SEGMENT << 4))) { + DEBUG_PRINTF_CS_IP("%s: read from PMM Segment %04xh: addr: %x --> %x\n", + __func__, PMM_CONV_SEGMENT, _addr, _rval); + /* HALT_SYS(); */ + /* dump registers */ + /* x86emu_dump_xregs(); */ + } + /* read from PNP_DATA_SEGMENT */ + else if ((_addr <= ((PNP_DATA_SEGMENT << 4) | 0xffff)) && (_addr >= (PNP_DATA_SEGMENT << 4))) { + DEBUG_PRINTF_CS_IP("%s: read from PnP Data Segment %04xh: addr: %x --> %x\n", + __func__, PNP_DATA_SEGMENT, _addr, _rval); + /* HALT_SYS(); */ + /* dump registers */ + /* x86emu_dump_xregs(); */ + } + /* read from EBDA Segment */ + else if ((_addr <= ((ebda_segment << 4) | (ebda_size - 1))) && (_addr >= (ebda_segment << 4))) { + DEBUG_PRINTF_CS_IP("%s: read from Extended BIOS Data Area %04xh, size: %04x: addr: %x --> %x\n", + __func__, ebda_segment, ebda_size, _addr, _rval); + } + /* read from BIOS_DATA_SEGMENT */ + else if ((_addr <= ((BIOS_DATA_SEGMENT << 4) | 0xffff)) && (_addr >= (BIOS_DATA_SEGMENT << 4))) { + DEBUG_PRINTF_CS_IP("%s: read from BIOS Data Segment %04xh: addr: %x --> %x\n", + __func__, BIOS_DATA_SEGMENT, _addr, _rval); + /* for PMM debugging */ + /*if (_addr == BIOS_DATA_SEGMENT << 4) { + X86EMU_trace_on(); + M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F; + }*/ + /* dump registers */ + /* x86emu_dump_xregs(); */ + } + in_check = 0; +} + +static inline void DEBUG_CHECK_VMEM_WRITE(u32 _addr, u32 _val) +{ + u16 ebda_segment; + u32 ebda_size; + if (!((debug_flags & DEBUG_CHECK_VMEM_ACCESS) && (in_check == 0))) + return; + in_check = 1; + /* determine ebda_segment and size + * since we are using my_rdx calls, make sure that this is after + * setting in_check! */ + /* offset 03 in BDA is EBDA segment */ + ebda_segment = my_rdw(0x40e); + /* first value in ebda is size in KB */ + ebda_size = my_rdb(ebda_segment << 4) * 1024; + /* check Interrupt Vector Access (0000:0000h - 0000:0400h) */ + if (_addr < 0x400) { + DEBUG_PRINTF_CS_IP("%s: write to Interrupt Vector %x <-- %x\n", + __func__, _addr / 4, _val); + } + /* access to BIOS Data Area (0000:0400h - 0000:0500h)*/ + else if ((_addr >= 0x400) && (_addr < 0x500)) { + DEBUG_PRINTF_CS_IP("%s: write to BIOS Data Area: addr: %x <-- %x\n", + __func__, _addr, _val); + /* dump registers */ + /* x86emu_dump_xregs(); */ + } + /* access to first 64k of memory...*/ + else if (_addr < 0x10000) { + DEBUG_PRINTF_CS_IP("%s: write to segment 0000h: addr: %x <-- %x\n", + __func__, _addr, _val); + /* dump registers */ + /* x86emu_dump_xregs(); */ + } + /* write to PMM_CONV_SEGMENT... */ + else if ((_addr <= ((PMM_CONV_SEGMENT << 4) | 0xffff)) && (_addr >= (PMM_CONV_SEGMENT << 4))) { + DEBUG_PRINTF_CS_IP("%s: write to PMM Segment %04xh: addr: %x <-- %x\n", + __func__, PMM_CONV_SEGMENT, _addr, _val); + /* dump registers */ + /* x86emu_dump_xregs(); */ + } + /* write to PNP_DATA_SEGMENT... */ + else if ((_addr <= ((PNP_DATA_SEGMENT << 4) | 0xffff)) && (_addr >= (PNP_DATA_SEGMENT << 4))) { + DEBUG_PRINTF_CS_IP("%s: write to PnP Data Segment %04xh: addr: %x <-- %x\n", + __func__, PNP_DATA_SEGMENT, _addr, _val); + /* dump registers */ + /* x86emu_dump_xregs(); */ + } + /* write to EBDA Segment... */ + else if ((_addr <= ((ebda_segment << 4) | (ebda_size - 1))) && (_addr >= (ebda_segment << 4))) { + DEBUG_PRINTF_CS_IP("%s: write to Extended BIOS Data Area %04xh, size: %04x: addr: %x <-- %x\n", + __func__, ebda_segment, ebda_size, _addr, _val); + } + /* write to BIOS_DATA_SEGMENT... */ + else if ((_addr <= ((BIOS_DATA_SEGMENT << 4) | 0xffff)) && (_addr >= (BIOS_DATA_SEGMENT << 4))) { + DEBUG_PRINTF_CS_IP("%s: write to BIOS Data Segment %04xh: addr: %x <-- %x\n", + __func__, BIOS_DATA_SEGMENT, _addr, _val); + /* dump registers */ + /* x86emu_dump_xregs(); */ + } + /* write to current CS segment... */ + else if ((_addr < ((M.x86.R_CS << 4) | 0xffff)) && (_addr > (M.x86.R_CS << 4))) { + DEBUG_PRINTF_CS_IP("%s: write to CS segment %04xh: addr: %x <-- %x\n", + __func__, M.x86.R_CS, _addr, _val); + /* dump registers */ + /* x86emu_dump_xregs(); */ + } + in_check = 0; +} +#else +static inline void DEBUG_CHECK_VMEM_READ(u32 _addr, u32 _rval) {}; +static inline void DEBUG_CHECK_VMEM_WRITE(u32 _addr, u32 _val) {}; +#endif + +//update time in BIOS Data Area +//DWord at offset 0x6c is the timer ticks since midnight, timer is running at 18Hz +//byte at 0x70 is timer overflow (set if midnight passed since last call to interrupt 1a function 00 +//cur_val is the current value, of offset 6c... +static void +update_time(u32 cur_val) +{ + //for convenience, we let the start of timebase be at midnight, we currently dont support + //real daytime anyway... + u64 ticks_per_day = tb_freq * 60 * 24; + // at 18Hz a period is ~55ms, converted to ticks (tb_freq is ticks/second) + u32 period_ticks = (55 * tb_freq) / 1000; + u64 curr_time = get_time(); + u64 ticks_since_midnight = curr_time % ticks_per_day; + u32 periods_since_midnight = ticks_since_midnight / period_ticks; + // if periods since midnight is smaller than last value, set overflow + // at BDA Offset 0x70 + if (periods_since_midnight < cur_val) { + my_wrb(0x470, 1); + } + // store periods since midnight at BDA offset 0x6c + my_wrl(0x46c, periods_since_midnight); +} + +// read byte from memory +u8 +my_rdb(u32 addr) +{ + unsigned long translated_addr = addr; + u8 translated = biosemu_dev_translate_address(IORESOURCE_MEM, &translated_addr); + u8 rval; + if (translated != 0) { + //translation successfull, access VGA Memory (BAR or Legacy...) + DEBUG_PRINTF_MEM("%s(%08x): access to VGA Memory\n", + __func__, addr); + //DEBUG_PRINTF_MEM("%s(%08x): translated_addr: %llx\n", __func__, addr, translated_addr); + set_ci(); + rval = *((u8 *) translated_addr); + clr_ci(); + DEBUG_PRINTF_MEM("%s(%08x) VGA --> %02x\n", __func__, addr, + rval); + return rval; + } else if (addr > M.mem_size) { + DEBUG_PRINTF("%s(%08x): Memory Access out of range!\n", + __func__, addr); + //disassemble_forward(M.x86.saved_cs, M.x86.saved_ip, 1); + HALT_SYS(); + } else { + /* read from virtual memory */ + rval = *((u8 *) (M.mem_base + addr)); + DEBUG_CHECK_VMEM_READ(addr, rval); + return rval; + } + return -1; +} + +//read word from memory +u16 +my_rdw(u32 addr) +{ + unsigned long translated_addr = addr; + u8 translated = biosemu_dev_translate_address(IORESOURCE_MEM, &translated_addr); + u16 rval; + if (translated != 0) { + //translation successfull, access VGA Memory (BAR or Legacy...) + DEBUG_PRINTF_MEM("%s(%08x): access to VGA Memory\n", + __func__, addr); + //DEBUG_PRINTF_MEM("%s(%08x): translated_addr: %llx\n", __func__, addr, translated_addr); + // check for legacy memory, because of the remapping to BARs, the reads must + // be byte reads... + if ((addr >= 0xa0000) && (addr < 0xc0000)) { + //read bytes a using my_rdb, because of the remapping to BARs + //words may not be contiguous in memory, so we need to translate + //every address... + rval = ((u8) my_rdb(addr)) | + (((u8) my_rdb(addr + 1)) << 8); + } else { + if ((translated_addr & (u64) 0x1) == 0) { + // 16 bit aligned access... + set_ci(); + rval = in16le((void *) translated_addr); + clr_ci(); + } else { + // unaligned access, read single bytes + set_ci(); + rval = (*((u8 *) translated_addr)) | + (*((u8 *) translated_addr + 1) << 8); + clr_ci(); + } + } + DEBUG_PRINTF_MEM("%s(%08x) VGA --> %04x\n", __func__, addr, + rval); + return rval; + } else if (addr > M.mem_size) { + DEBUG_PRINTF("%s(%08x): Memory Access out of range!\n", + __func__, addr); + //disassemble_forward(M.x86.saved_cs, M.x86.saved_ip, 1); + HALT_SYS(); + } else { + /* read from virtual memory */ + rval = in16le((void *) (M.mem_base + addr)); + DEBUG_CHECK_VMEM_READ(addr, rval); + return rval; + } + return -1; +} + +//read long from memory +u32 +my_rdl(u32 addr) +{ + unsigned long translated_addr = addr; + u8 translated = biosemu_dev_translate_address(IORESOURCE_MEM, &translated_addr); + u32 rval; + if (translated != 0) { + //translation successfull, access VGA Memory (BAR or Legacy...) + DEBUG_PRINTF_MEM("%s(%x): access to VGA Memory\n", + __func__, addr); + //DEBUG_PRINTF_MEM("%s(%08x): translated_addr: %llx\n", __func__, addr, translated_addr); + // check for legacy memory, because of the remapping to BARs, the reads must + // be byte reads... + if ((addr >= 0xa0000) && (addr < 0xc0000)) { + //read bytes a using my_rdb, because of the remapping to BARs + //dwords may not be contiguous in memory, so we need to translate + //every address... + rval = ((u8) my_rdb(addr)) | + (((u8) my_rdb(addr + 1)) << 8) | + (((u8) my_rdb(addr + 2)) << 16) | + (((u8) my_rdb(addr + 3)) << 24); + } else { + if ((translated_addr & (u64) 0x3) == 0) { + // 32 bit aligned access... + set_ci(); + rval = in32le((void *) translated_addr); + clr_ci(); + } else { + // unaligned access, read single bytes + set_ci(); + rval = (*((u8 *) translated_addr)) | + (*((u8 *) translated_addr + 1) << 8) | + (*((u8 *) translated_addr + 2) << 16) | + (*((u8 *) translated_addr + 3) << 24); + clr_ci(); + } + } + DEBUG_PRINTF_MEM("%s(%08x) VGA --> %08x\n", __func__, addr, + rval); + //HALT_SYS(); + return rval; + } else if (addr > M.mem_size) { + DEBUG_PRINTF("%s(%08x): Memory Access out of range!\n", + __func__, addr); + //disassemble_forward(M.x86.saved_cs, M.x86.saved_ip, 1); + HALT_SYS(); + } else { + /* read from virtual memory */ + rval = in32le((void *) (M.mem_base + addr)); + switch (addr) { + case 0x46c: + //BDA Time Data, update it, before reading + update_time(rval); + rval = in32le((void *) (M.mem_base + addr)); + break; + } + DEBUG_CHECK_VMEM_READ(addr, rval); + return rval; + } + return -1; +} + +//write byte to memory +void +my_wrb(u32 addr, u8 val) +{ + unsigned long translated_addr = addr; + u8 translated = biosemu_dev_translate_address(IORESOURCE_MEM, &translated_addr); + if (translated != 0) { + //translation successfull, access VGA Memory (BAR or Legacy...) + DEBUG_PRINTF_MEM("%s(%x, %x): access to VGA Memory\n", + __func__, addr, val); + //DEBUG_PRINTF_MEM("%s(%08x): translated_addr: %llx\n", __func__, addr, translated_addr); + set_ci(); + *((u8 *) translated_addr) = val; + clr_ci(); + } else if (addr > M.mem_size) { + DEBUG_PRINTF("%s(%08x): Memory Access out of range!\n", + __func__, addr); + //disassemble_forward(M.x86.saved_cs, M.x86.saved_ip, 1); + HALT_SYS(); + } else { + /* write to virtual memory */ + DEBUG_CHECK_VMEM_WRITE(addr, val); + *((u8 *) (M.mem_base + addr)) = val; + } +} + +void +my_wrw(u32 addr, u16 val) +{ + unsigned long translated_addr = addr; + u8 translated = biosemu_dev_translate_address(IORESOURCE_MEM, &translated_addr); + if (translated != 0) { + //translation successfull, access VGA Memory (BAR or Legacy...) + DEBUG_PRINTF_MEM("%s(%x, %x): access to VGA Memory\n", + __func__, addr, val); + //DEBUG_PRINTF_MEM("%s(%08x): translated_addr: %llx\n", __func__, addr, translated_addr); + // check for legacy memory, because of the remapping to BARs, the reads must + // be byte reads... + if ((addr >= 0xa0000) && (addr < 0xc0000)) { + //read bytes a using my_rdb, because of the remapping to BARs + //words may not be contiguous in memory, so we need to translate + //every address... + my_wrb(addr, (u8) (val & 0x00FF)); + my_wrb(addr + 1, (u8) ((val & 0xFF00) >> 8)); + } else { + if ((translated_addr & (u64) 0x1) == 0) { + // 16 bit aligned access... + set_ci(); + out16le((void *) translated_addr, val); + clr_ci(); + } else { + // unaligned access, write single bytes + set_ci(); + *((u8 *) translated_addr) = + (u8) (val & 0x00FF); + *((u8 *) translated_addr + 1) = + (u8) ((val & 0xFF00) >> 8); + clr_ci(); + } + } + } else if (addr > M.mem_size) { + DEBUG_PRINTF("%s(%08x): Memory Access out of range!\n", + __func__, addr); + //disassemble_forward(M.x86.saved_cs, M.x86.saved_ip, 1); + HALT_SYS(); + } else { + /* write to virtual memory */ + DEBUG_CHECK_VMEM_WRITE(addr, val); + out16le((void *) (M.mem_base + addr), val); + } +} +void +my_wrl(u32 addr, u32 val) +{ + unsigned long translated_addr = addr; + u8 translated = biosemu_dev_translate_address(IORESOURCE_MEM, &translated_addr); + if (translated != 0) { + //translation successfull, access VGA Memory (BAR or Legacy...) + DEBUG_PRINTF_MEM("%s(%x, %x): access to VGA Memory\n", + __func__, addr, val); + //DEBUG_PRINTF_MEM("%s(%08x): translated_addr: %llx\n", __func__, addr, translated_addr); + // check for legacy memory, because of the remapping to BARs, the reads must + // be byte reads... + if ((addr >= 0xa0000) && (addr < 0xc0000)) { + //read bytes a using my_rdb, because of the remapping to BARs + //words may not be contiguous in memory, so we need to translate + //every address... + my_wrb(addr, (u8) (val & 0x000000FF)); + my_wrb(addr + 1, (u8) ((val & 0x0000FF00) >> 8)); + my_wrb(addr + 2, (u8) ((val & 0x00FF0000) >> 16)); + my_wrb(addr + 3, (u8) ((val & 0xFF000000) >> 24)); + } else { + if ((translated_addr & (u64) 0x3) == 0) { + // 32 bit aligned access... + set_ci(); + out32le((void *) translated_addr, val); + clr_ci(); + } else { + // unaligned access, write single bytes + set_ci(); + *((u8 *) translated_addr) = + (u8) (val & 0x000000FF); + *((u8 *) translated_addr + 1) = + (u8) ((val & 0x0000FF00) >> 8); + *((u8 *) translated_addr + 2) = + (u8) ((val & 0x00FF0000) >> 16); + *((u8 *) translated_addr + 3) = + (u8) ((val & 0xFF000000) >> 24); + clr_ci(); + } + } + } else if (addr > M.mem_size) { + DEBUG_PRINTF("%s(%08x): Memory Access out of range!\n", + __func__, addr); + //disassemble_forward(M.x86.saved_cs, M.x86.saved_ip, 1); + HALT_SYS(); + } else { + /* write to virtual memory */ + DEBUG_CHECK_VMEM_WRITE(addr, val); + out32le((void *) (M.mem_base + addr), val); + } +} +#else +u8 +my_rdb(u32 addr) +{ + return rdb(addr); +} + +u16 +my_rdw(u32 addr) +{ + return rdw(addr); +} + +u32 +my_rdl(u32 addr) +{ + return rdl(addr); +} + +void +my_wrb(u32 addr, u8 val) +{ + wrb(addr, val); +} + +void +my_wrw(u32 addr, u16 val) +{ + wrw(addr, val); +} + +void +my_wrl(u32 addr, u32 val) +{ + wrl(addr, val); +} +#endif diff --git a/src/device/oprom/yabel/mem.h b/src/device/oprom/yabel/mem.h new file mode 100644 index 0000000000..dca8cfc192 --- /dev/null +++ b/src/device/oprom/yabel/mem.h @@ -0,0 +1,36 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#ifndef _BIOSEMU_MEM_H_ +#define _BIOSEMU_MEM_H_ +#include <x86emu/x86emu.h> +#include <types.h> + +// read byte from memory +u8 my_rdb(u32 addr); + +//read word from memory +u16 my_rdw(u32 addr); + +//read long from memory +u32 my_rdl(u32 addr); + +//write byte to memory +void my_wrb(u32 addr, u8 val); + +//write word to memory +void my_wrw(u32 addr, u16 val); + +//write long to memory +void my_wrl(u32 addr, u32 val); + +#endif diff --git a/src/device/oprom/yabel/pmm.c b/src/device/oprom/yabel/pmm.c new file mode 100644 index 0000000000..19d14d46b6 --- /dev/null +++ b/src/device/oprom/yabel/pmm.c @@ -0,0 +1,442 @@ +/**************************************************************************** + * YABEL BIOS Emulator + * + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Copyright (c) 2008 Pattrick Hueper <phueper@hueper.net> + ****************************************************************************/ + +#include <x86emu/x86emu.h> +#include "../x86emu/prim_ops.h" +#include <string.h> + +#include "biosemu.h" +#include "pmm.h" +#include "debug.h" +#include "device.h" + +/* this struct is used to remember which PMM spaces + * have been assigned. MAX_PMM_AREAS defines how many + * PMM areas we can assign. + * All areas are assigned in PMM_CONV_SEGMENT + */ +typedef struct { + u32 handle; /* handle that is returned to PMM caller */ + u32 offset; /* in PMM_CONV_SEGMENT */ + u32 length; /* length of this area */ +} pmm_allocation_t; + +#define MAX_PMM_AREAS 10 + +/* array to store the above structs */ +static pmm_allocation_t pmm_allocation_array[MAX_PMM_AREAS]; + +/* index into pmm_allocation_array */ +static u32 curr_pmm_allocation_index = 0; + +/* This function is used to setup the PMM struct in virtual memory + * at a certain offset, the length of the PMM struct is returned */ +u8 pmm_setup(u16 segment, u16 offset) +{ + /* setup the PMM structure */ + pmm_information_t *pis = + (pmm_information_t *) (M.mem_base + (((u32) segment) << 4) + + offset); + memset(pis, 0, sizeof(pmm_information_t)); + /* set signature to $PMM */ + pis->signature[0] = '$'; + pis->signature[1] = 'P'; + pis->signature[2] = 'M'; + pis->signature[3] = 'M'; + /* revision as specified */ + pis->struct_rev = 0x01; + /* internal length, excluding code */ + pis->length = ((void *)&(pis->code) - (void *)&(pis->signature)); + /* the code to be executed, pointed to by entry_point_offset */ + pis->code[0] = 0xCD; /* INT */ + pis->code[1] = PMM_INT_NUM; /* my selfdefined PMM INT number */ + pis->code[2] = 0xCB; /* RETF */ + /* set the entry_point_offset, it should point to pis->code, segment is the segment of + * this struct. Since pis->length is the length of the struct excluding code, offset+pis->length + * points to the code... it's that simple ;-) + */ + out32le(&(pis->entry_point_offset), + (u32) segment << 16 | (u32) (offset + pis->length)); + /* checksum calculation */ + u8 i; + u8 checksum = 0; + for (i = 0; i < pis->length; i++) { + checksum += *(((u8 *) pis) + i); + } + pis->checksum = ((u8) 0) - checksum; + CHECK_DBG(DEBUG_PMM) { + DEBUG_PRINTF_PMM("PMM Structure:\n"); + dump((void *)pis, sizeof(pmm_information_t)); + } + return sizeof(pmm_information_t); +} + +/* handle the selfdefined interrupt, this is executed, when the PMM Entry Point + * is executed, it must handle all PMM requests + */ +void pmm_handleInt() +{ + u32 rval = 0; + u16 function, flags; + u32 handle, length; + u32 i, j; + u32 buffer; + /* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + * according to the PMM Spec "the flags and all registers, except DX and AX + * are preserved across calls to PMM" + * so we save M.x86 and in :exit label we restore it, however, this means that no + * returns must be used in this function, any exit must use goto exit! + * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + */ + X86EMU_regs backup_regs = M.x86; + pop_long(); /* pop the return address, this is already saved in INT handler, we don't need + to remember this. */ + function = pop_word(); + switch (function) { + case 0: + /* function pmmAllocate */ + length = pop_long(); + length *= 16; /* length is passed in "paragraphs" of 16 bytes each */ + handle = pop_long(); + flags = pop_word(); + DEBUG_PRINTF_PMM + ("%s: pmmAllocate: Length: %x, Handle: %x, Flags: %x\n", + __func__, length, handle, flags); + if ((flags & 0x1) != 0) { + /* request to allocate in conventional memory */ + if (curr_pmm_allocation_index >= MAX_PMM_AREAS) { + printf + ("%s: pmmAllocate: Maximum Number of allocatable areas reached (%d), cannot allocate more memory!\n", + __func__, MAX_PMM_AREAS); + rval = 0; + goto exit; + } + /* some ROMs seem to be confused by offset 0, so lets start at 0x100 */ + u32 next_offset = 0x100; + pmm_allocation_t *pmm_alloc = + &(pmm_allocation_array[curr_pmm_allocation_index]); + if (curr_pmm_allocation_index != 0) { + /* we have already allocated... get the new next_offset + * from the previous pmm_allocation_t */ + next_offset = + pmm_allocation_array + [curr_pmm_allocation_index - 1].offset + + pmm_allocation_array + [curr_pmm_allocation_index - 1].length; + } + DEBUG_PRINTF_PMM("%s: next_offset: 0x%x\n", + __func__, next_offset); + if (length == 0) { + /* largest possible block size requested, we have on segment + * to allocate, so largest possible is segment size (0xFFFF) + * minus next_offset + */ + rval = 0xFFFF - next_offset; + goto exit; + } + u32 align = 0; + if (((flags & 0x4) != 0) && (length > 0)) { + /* align to least significant bit set in length param */ + u8 lsb = 0; + while (((length >> lsb) & 0x1) == 0) { + lsb++; + } + align = 1 << lsb; + } + /* always align at least to paragraph (16byte) boundary + * hm... since the length is always in paragraphs, we cannot + * align outside of paragraphs anyway... so this check might + * be unnecessary...*/ + if (align < 0x10) { + align = 0x10; + } + DEBUG_PRINTF_PMM("%s: align: 0x%x\n", __func__, + align); + if ((next_offset & (align - 1)) != 0) { + /* not yet aligned... align! */ + next_offset += align; + next_offset &= ~(align - 1); + } + if ((next_offset + length) > 0xFFFF) { + rval = 0; + printf + ("%s: pmmAllocate: Not enough memory available for allocation!\n", + __func__); + goto exit; + } + curr_pmm_allocation_index++; + /* remember the values in pmm_allocation_array */ + pmm_alloc->handle = handle; + pmm_alloc->offset = next_offset; + pmm_alloc->length = length; + /* return the 32bit "physical" address, i.e. combination of segment and offset */ + rval = ((u32) (PMM_CONV_SEGMENT << 16)) | next_offset; + DEBUG_PRINTF_PMM + ("%s: pmmAllocate: allocated memory at %x\n", + __func__, rval); + } else { + rval = 0; + printf + ("%s: pmmAllocate: allocation in extended memory not supported!\n", + __func__); + } + goto exit; + case 1: + /* function pmmFind */ + handle = pop_long(); /* the handle to lookup */ + DEBUG_PRINTF_PMM("%s: pmmFind: Handle: %x\n", __func__, + handle); + i = 0; + for (i = 0; i < curr_pmm_allocation_index; i++) { + if (pmm_allocation_array[i].handle == handle) { + DEBUG_PRINTF_PMM + ("%s: pmmFind: found allocated memory at %x\n", + __func__, rval); + /* return the 32bit "physical" address, i.e. combination of segment and offset */ + rval = + ((u32) (PMM_CONV_SEGMENT << 16)) | + pmm_allocation_array[i].offset; + } + } + if (rval == 0) { + DEBUG_PRINTF_PMM + ("%s: pmmFind: handle (%x) not found!\n", + __func__, handle); + } + goto exit; + case 2: + /* function pmmDeallocate */ + buffer = pop_long(); + /* since argument is the address of the PMM block (including the segment, + * we need to remove the segment to get the offset + */ + buffer = buffer ^ ((u32) PMM_CONV_SEGMENT << 16); + DEBUG_PRINTF_PMM("%s: pmmDeallocate: PMM segment offset: %x\n", + __func__, buffer); + i = 0; + /* rval = 0 means we deallocated the buffer, so set it to 1 in case we dont find it and + * thus cannot deallocate + */ + rval = 1; + for (i = 0; i < curr_pmm_allocation_index; i++) { + DEBUG_PRINTF_PMM("%d: %x\n", i, + pmm_allocation_array[i].handle); + if (pmm_allocation_array[i].offset == buffer) { + /* we found the requested buffer, rval = 0 */ + rval = 0; + DEBUG_PRINTF_PMM + ("%s: pmmDeallocate: found allocated memory at index: %d\n", + __func__, i); + /* copy the remaining elements in pmm_allocation_array one position up */ + j = i; + for (; j < curr_pmm_allocation_index; j++) { + pmm_allocation_array[j] = + pmm_allocation_array[j + 1]; + } + /* move curr_pmm_allocation_index one up, too */ + curr_pmm_allocation_index--; + /* finally clean last element */ + pmm_allocation_array[curr_pmm_allocation_index]. + handle = 0; + pmm_allocation_array[curr_pmm_allocation_index]. + offset = 0; + pmm_allocation_array[curr_pmm_allocation_index]. + length = 0; + break; + } + } + if (rval != 0) { + DEBUG_PRINTF_PMM + ("%s: pmmDeallocate: offset (%x) not found, cannot deallocate!\n", + __func__, buffer); + } + goto exit; + default: + /* invalid/unimplemented function */ + printf("%s: invalid PMM function (0x%04x) called!\n", + __func__, function); + /* PMM spec says if function is invalid, return 0xFFFFFFFF */ + rval = 0xFFFFFFFF; + goto exit; + } +exit: + /* exit handler of this function, restore registers, put return value in DX:AX */ + M.x86 = backup_regs; + M.x86.R_DX = (u16) ((rval >> 16) & 0xFFFF); + M.x86.R_AX = (u16) (rval & 0xFFFF); + CHECK_DBG(DEBUG_PMM) { + DEBUG_PRINTF_PMM("%s: dump of pmm_allocation_array:\n", + __func__); + for (i = 0; i < MAX_PMM_AREAS; i++) { + DEBUG_PRINTF_PMM + ("%d:\n\thandle: %x\n\toffset: %x\n\tlength: %x\n", + i, pmm_allocation_array[i].handle, + pmm_allocation_array[i].offset, + pmm_allocation_array[i].length); + } + } + return; +} + +/* This function tests the pmm_handleInt() function above. */ +void pmm_test(void) +{ + u32 handle, length, addr; + u16 function, flags; + /*-------------------- Test simple allocation/find/deallocation ----------------------------- */ + function = 0; /* pmmAllocate */ + handle = 0xdeadbeef; + length = 16; /* in 16byte paragraphs, so we allocate 256 bytes... */ + flags = 0x1; /* conventional memory, unaligned */ + /* setup stack for call to pmm_handleInt() */ + push_word(flags); + push_long(handle); + push_long(length); + push_word(function); + push_long(0); /* This is the return address for the ABI, unused in this implementation */ + pmm_handleInt(); + addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX; + DEBUG_PRINTF_PMM("%s: allocated memory at: %04x:%04x\n", __func__, + M.x86.R_DX, M.x86.R_AX); + function = 1; /* pmmFind */ + push_long(handle); + push_word(function); + push_long(0); /* This is the return address for the ABI, unused in this implementation */ + pmm_handleInt(); + DEBUG_PRINTF_PMM("%s: found memory at: %04x:%04x (expected: %08x)\n", + __func__, M.x86.R_DX, M.x86.R_AX, addr); + function = 2; /* pmmDeallocate */ + push_long(addr); + push_word(function); + push_long(0); /* This is the return address for the ABI, unused in this implementation */ + pmm_handleInt(); + DEBUG_PRINTF_PMM + ("%s: freed memory rval: %04x:%04x (expected: 0000:0000)\n", + __func__, M.x86.R_DX, M.x86.R_AX); + /*-------------------- Test aligned allocation/deallocation ----------------------------- */ + function = 0; /* pmmAllocate */ + handle = 0xdeadbeef; + length = 257; /* in 16byte paragraphs, so we allocate 4KB + 16 bytes... */ + flags = 0x1; /* conventional memory, unaligned */ + /* setup stack for call to pmm_handleInt() */ + push_word(flags); + push_long(handle); + push_long(length); + push_word(function); + push_long(0); /* This is the return address for the ABI, unused in this implementation */ + pmm_handleInt(); + addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX; + DEBUG_PRINTF_PMM("%s: allocated memory at: %04x:%04x\n", __func__, + M.x86.R_DX, M.x86.R_AX); + function = 0; /* pmmAllocate */ + handle = 0xf00d4b0b; + length = 128; /* in 16byte paragraphs, so we allocate 2KB... */ + flags = 0x5; /* conventional memory, aligned */ + /* setup stack for call to pmm_handleInt() */ + push_word(flags); + push_long(handle); + push_long(length); + push_word(function); + push_long(0); /* This is the return address for the ABI, unused in this implementation */ + pmm_handleInt(); + /* the address should be aligned to 0x800, so probably it is at offset 0x1800... */ + addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX; + DEBUG_PRINTF_PMM("%s: allocated memory at: %04x:%04x\n", __func__, + M.x86.R_DX, M.x86.R_AX); + function = 1; /* pmmFind */ + push_long(handle); + push_word(function); + push_long(0); /* This is the return address for the ABI, unused in this implementation */ + pmm_handleInt(); + addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX; + function = 2; /* pmmDeallocate */ + push_long(addr); + push_word(function); + push_long(0); /* This is the return address for the ABI, unused in this implementation */ + pmm_handleInt(); + DEBUG_PRINTF_PMM + ("%s: freed memory rval: %04x:%04x (expected: 0000:0000)\n", + __func__, M.x86.R_DX, M.x86.R_AX); + handle = 0xdeadbeef; + function = 1; /* pmmFind */ + push_long(handle); + push_word(function); + push_long(0); /* This is the return address for the ABI, unused in this implementation */ + pmm_handleInt(); + addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX; + function = 2; /* pmmDeallocate */ + push_long(addr); + push_word(function); + push_long(0); /* This is the return address for the ABI, unused in this implementation */ + pmm_handleInt(); + DEBUG_PRINTF_PMM + ("%s: freed memory rval: %04x:%04x (expected: 0000:0000)\n", + __func__, M.x86.R_DX, M.x86.R_AX); + /*-------------------- Test out of memory allocation ----------------------------- */ + function = 0; /* pmmAllocate */ + handle = 0xdeadbeef; + length = 0; /* length zero means, give me the largest possible block */ + flags = 0x1; /* conventional memory, unaligned */ + /* setup stack for call to pmm_handleInt() */ + push_word(flags); + push_long(handle); + push_long(length); + push_word(function); + push_long(0); /* This is the return address for the ABI, unused in this implementation */ + pmm_handleInt(); + length = ((u32) M.x86.R_DX << 16) | M.x86.R_AX; + length /= 16; /* length in paragraphs */ + DEBUG_PRINTF_PMM("%s: largest possible length: %08x\n", __func__, + length); + function = 0; /* pmmAllocate */ + flags = 0x1; /* conventional memory, aligned */ + /* setup stack for call to pmm_handleInt() */ + push_word(flags); + push_long(handle); + push_long(length); + push_word(function); + push_long(0); /* This is the return address for the ABI, unused in this implementation */ + pmm_handleInt(); + addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX; + DEBUG_PRINTF_PMM("%s: allocated memory at: %04x:%04x\n", __func__, + M.x86.R_DX, M.x86.R_AX); + function = 0; /* pmmAllocate */ + length = 1; + handle = 0xf00d4b0b; + flags = 0x1; /* conventional memory, aligned */ + /* setup stack for call to pmm_handleInt() */ + push_word(flags); + push_long(handle); + push_long(length); + push_word(function); + push_long(0); /* This is the return address for the ABI, unused in this implementation */ + pmm_handleInt(); + /* this should fail, so 0x0 should be returned */ + addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX; + DEBUG_PRINTF_PMM + ("%s: allocated memory at: %04x:%04x expected: 0000:0000\n", + __func__, M.x86.R_DX, M.x86.R_AX); + handle = 0xdeadbeef; + function = 1; /* pmmFind */ + push_long(handle); + push_word(function); + push_long(0); /* This is the return address for the ABI, unused in this implementation */ + pmm_handleInt(); + addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX; + function = 2; /* pmmDeallocate */ + push_long(addr); + push_word(function); + push_long(0); /* This is the return address for the ABI, unused in this implementation */ + pmm_handleInt(); + DEBUG_PRINTF_PMM + ("%s: freed memory rval: %04x:%04x (expected: 0000:0000)\n", + __func__, M.x86.R_DX, M.x86.R_AX); +} diff --git a/src/device/oprom/yabel/pmm.h b/src/device/oprom/yabel/pmm.h new file mode 100644 index 0000000000..3cc3c17ac6 --- /dev/null +++ b/src/device/oprom/yabel/pmm.h @@ -0,0 +1,46 @@ +/**************************************************************************** + * YABEL BIOS Emulator + * + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Copyright (c) 2008 Pattrick Hueper <phueper@hueper.net> + ****************************************************************************/ + +#ifndef _YABEL_PMM_H_ +#define _YABEL_PMM_H_ + +#include <types.h> + +/* PMM Structure see PMM Spec Version 1.01 Chapter 3.1.1 + * (search web for specspmm101.pdf) + */ +typedef struct { + u8 signature[4]; + u8 struct_rev; + u8 length; + u8 checksum; + u32 entry_point_offset; + u8 reserved[5]; + /* Code is not part of the speced PMM struct, however, since I cannot + * put the handling of PMM in the virtual memory (I dont want to hack it + * together in x86 assembly ;-)) this code array is pointed to by + * entry_point_offset, in code there is only a INT call and a RETF, + * thus every PMM call will issue a PMM INT (only defined in YABEL, + * see interrupt.c) and the INT Handler will do the actual PMM work. + */ + u8 code[3]; +} __attribute__ ((__packed__)) pmm_information_t; + +/* This function is used to setup the PMM struct in virtual memory + * at a certain offset */ +u8 pmm_setup(u16 segment, u16 offset); + +/* This is the INT Handler mentioned above, called by my special PMM INT. */ +void pmm_handleInt(void); + +void pmm_test(void); + +#endif // _YABEL_PMM_H diff --git a/src/device/oprom/yabel/vbe.c b/src/device/oprom/yabel/vbe.c new file mode 100644 index 0000000000..9dbe07cdd5 --- /dev/null +++ b/src/device/oprom/yabel/vbe.c @@ -0,0 +1,774 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net> + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#include <string.h> +#include <types.h> +#if CONFIG_FRAMEBUFFER_SET_VESA_MODE +#include <boot/coreboot_tables.h> +#endif + +#include <arch/byteorder.h> + +#include "debug.h" + +#include <x86emu/x86emu.h> +#include <x86emu/regs.h> +#include "../x86emu/prim_ops.h" + +#include "biosemu.h" +#include "io.h" +#include "mem.h" +#include "interrupt.h" +#include "device.h" + +#include <cbfs.h> + +#include <delay.h> +#include "../../src/lib/jpeg.h" + +#include <vbe.h> + +// pointer to VBEInfoBuffer, set by vbe_prepare +u8 *vbe_info_buffer = 0; + +// virtual BIOS Memory +u8 *biosmem; +u32 biosmem_size; + +static inline u8 +vbe_prepare(void) +{ + vbe_info_buffer = biosmem + (VBE_SEGMENT << 4); // segment:offset off VBE Data Area + //clear buffer + memset(vbe_info_buffer, 0, 512); + //set VbeSignature to "VBE2" to indicate VBE 2.0+ request + vbe_info_buffer[0] = 'V'; + vbe_info_buffer[0] = 'B'; + vbe_info_buffer[0] = 'E'; + vbe_info_buffer[0] = '2'; + // ES:DI store pointer to buffer in virtual mem see vbe_info_buffer above... + M.x86.R_EDI = 0x0; + M.x86.R_ES = VBE_SEGMENT; + + return 0; // successfull init +} + +#if CONFIG_FRAMEBUFFER_SET_VESA_MODE +// VBE Function 00h +static u8 +vbe_info(vbe_info_t * info) +{ + vbe_prepare(); + // call VBE function 00h (Info Function) + M.x86.R_EAX = 0x4f00; + + // enable trace + CHECK_DBG(DEBUG_TRACE_X86EMU) { + X86EMU_trace_on(); + } + // run VESA Interrupt + runInt10(); + + if (M.x86.R_AL != 0x4f) { + DEBUG_PRINTF_VBE("%s: VBE Info Function NOT supported! AL=%x\n", + __func__, M.x86.R_AL); + return -1; + } + + if (M.x86.R_AH != 0x0) { + DEBUG_PRINTF_VBE + ("%s: VBE Info Function Return Code NOT OK! AH=%x\n", + __func__, M.x86.R_AH); + return M.x86.R_AH; + } + //printf("VBE Info Dump:"); + //dump(vbe_info_buffer, 64); + + //offset 0: signature + info->signature[0] = vbe_info_buffer[0]; + info->signature[1] = vbe_info_buffer[1]; + info->signature[2] = vbe_info_buffer[2]; + info->signature[3] = vbe_info_buffer[3]; + + // offset 4: 16bit le containing VbeVersion + info->version = in16le(vbe_info_buffer + 4); + + // offset 6: 32bit le containg segment:offset of OEM String in virtual Mem. + info->oem_string_ptr = + biosmem + ((in16le(vbe_info_buffer + 8) << 4) + + in16le(vbe_info_buffer + 6)); + + // offset 10: 32bit le capabilities + info->capabilities = in32le(vbe_info_buffer + 10); + + // offset 14: 32 bit le containing segment:offset of supported video mode table + u16 *video_mode_ptr; + video_mode_ptr = + (u16 *) (biosmem + + ((in16le(vbe_info_buffer + 16) << 4) + + in16le(vbe_info_buffer + 14))); + u32 i = 0; + do { + info->video_mode_list[i] = in16le(video_mode_ptr + i); + i++; + } + while ((i < + (sizeof(info->video_mode_list) / + sizeof(info->video_mode_list[0]))) + && (info->video_mode_list[i - 1] != 0xFFFF)); + + //offset 18: 16bit le total memory in 64KB blocks + info->total_memory = in16le(vbe_info_buffer + 18); + + return 0; +} + +static int mode_info_valid; + +int vbe_mode_info_valid(void) +{ + return mode_info_valid; +} + +// VBE Function 01h +static u8 +vbe_get_mode_info(vbe_mode_info_t * mode_info) +{ + vbe_prepare(); + // call VBE function 01h (Return VBE Mode Info Function) + M.x86.R_EAX = 0x4f01; + M.x86.R_CX = mode_info->video_mode; + + // enable trace + CHECK_DBG(DEBUG_TRACE_X86EMU) { + X86EMU_trace_on(); + } + // run VESA Interrupt + runInt10(); + + if (M.x86.R_AL != 0x4f) { + DEBUG_PRINTF_VBE + ("%s: VBE Return Mode Info Function NOT supported! AL=%x\n", + __func__, M.x86.R_AL); + return -1; + } + + if (M.x86.R_AH != 0x0) { + DEBUG_PRINTF_VBE + ("%s: VBE Return Mode Info (mode: %04x) Function Return Code NOT OK! AH=%02x\n", + __func__, mode_info->video_mode, M.x86.R_AH); + return M.x86.R_AH; + } + + //pointer to mode_info_block is in ES:DI + memcpy(mode_info->mode_info_block, + biosmem + ((M.x86.R_ES << 4) + M.x86.R_DI), + sizeof(mode_info->mode_info_block)); + mode_info_valid = 1; + + //printf("Mode Info Dump:"); + //dump(mode_info_block, 64); + + return 0; +} + +// VBE Function 02h +static u8 +vbe_set_mode(vbe_mode_info_t * mode_info) +{ + vbe_prepare(); + // call VBE function 02h (Set VBE Mode Function) + M.x86.R_EAX = 0x4f02; + M.x86.R_BX = mode_info->video_mode; + M.x86.R_BX |= 0x4000; // set bit 14 to request linear framebuffer mode + M.x86.R_BX &= 0x7FFF; // clear bit 15 to request clearing of framebuffer + + DEBUG_PRINTF_VBE("%s: setting mode: 0x%04x\n", __func__, + M.x86.R_BX); + + // enable trace + CHECK_DBG(DEBUG_TRACE_X86EMU) { + X86EMU_trace_on(); + } + // run VESA Interrupt + runInt10(); + + if (M.x86.R_AL != 0x4f) { + DEBUG_PRINTF_VBE + ("%s: VBE Set Mode Function NOT supported! AL=%x\n", + __func__, M.x86.R_AL); + return -1; + } + + if (M.x86.R_AH != 0x0) { + DEBUG_PRINTF_VBE + ("%s: mode: %x VBE Set Mode Function Return Code NOT OK! AH=%x\n", + __func__, mode_info->video_mode, M.x86.R_AH); + return M.x86.R_AH; + } + return 0; +} + +#if 0 +//VBE Function 08h +static u8 +vbe_set_palette_format(u8 format) +{ + vbe_prepare(); + // call VBE function 09h (Set/Get Palette Data Function) + M.x86.R_EAX = 0x4f08; + M.x86.R_BL = 0x00; // set format + M.x86.R_BH = format; + + DEBUG_PRINTF_VBE("%s: setting palette format: %d\n", __func__, + format); + + // enable trace + CHECK_DBG(DEBUG_TRACE_X86EMU) { + X86EMU_trace_on(); + } + // run VESA Interrupt + runInt10(); + + if (M.x86.R_AL != 0x4f) { + DEBUG_PRINTF_VBE + ("%s: VBE Set Palette Format Function NOT supported! AL=%x\n", + __func__, M.x86.R_AL); + return -1; + } + + if (M.x86.R_AH != 0x0) { + DEBUG_PRINTF_VBE + ("%s: VBE Set Palette Format Function Return Code NOT OK! AH=%x\n", + __func__, M.x86.R_AH); + return M.x86.R_AH; + } + return 0; +} + +// VBE Function 09h +static u8 +vbe_set_color(u16 color_number, u32 color_value) +{ + vbe_prepare(); + // call VBE function 09h (Set/Get Palette Data Function) + M.x86.R_EAX = 0x4f09; + M.x86.R_BL = 0x00; // set color + M.x86.R_CX = 0x01; // set only one entry + M.x86.R_DX = color_number; + // ES:DI is address where color_value is stored, we store it at 2000:0000 + M.x86.R_ES = 0x2000; + M.x86.R_DI = 0x0; + + // store color value at ES:DI + out32le(biosmem + (M.x86.R_ES << 4) + M.x86.R_DI, color_value); + + DEBUG_PRINTF_VBE("%s: setting color #%x: 0x%04x\n", __func__, + color_number, color_value); + + // enable trace + CHECK_DBG(DEBUG_TRACE_X86EMU) { + X86EMU_trace_on(); + } + // run VESA Interrupt + runInt10(); + + if (M.x86.R_AL != 0x4f) { + DEBUG_PRINTF_VBE + ("%s: VBE Set Palette Function NOT supported! AL=%x\n", + __func__, M.x86.R_AL); + return -1; + } + + if (M.x86.R_AH != 0x0) { + DEBUG_PRINTF_VBE + ("%s: VBE Set Palette Function Return Code NOT OK! AH=%x\n", + __func__, M.x86.R_AH); + return M.x86.R_AH; + } + return 0; +} + +static u8 +vbe_get_color(u16 color_number, u32 * color_value) +{ + vbe_prepare(); + // call VBE function 09h (Set/Get Palette Data Function) + M.x86.R_EAX = 0x4f09; + M.x86.R_BL = 0x00; // get color + M.x86.R_CX = 0x01; // get only one entry + M.x86.R_DX = color_number; + // ES:DI is address where color_value is stored, we store it at 2000:0000 + M.x86.R_ES = 0x2000; + M.x86.R_DI = 0x0; + + // enable trace + CHECK_DBG(DEBUG_TRACE_X86EMU) { + X86EMU_trace_on(); + } + // run VESA Interrupt + runInt10(); + + if (M.x86.R_AL != 0x4f) { + DEBUG_PRINTF_VBE + ("%s: VBE Set Palette Function NOT supported! AL=%x\n", + __func__, M.x86.R_AL); + return -1; + } + + if (M.x86.R_AH != 0x0) { + DEBUG_PRINTF_VBE + ("%s: VBE Set Palette Function Return Code NOT OK! AH=%x\n", + __func__, M.x86.R_AH); + return M.x86.R_AH; + } + // read color value from ES:DI + *color_value = in32le(biosmem + (M.x86.R_ES << 4) + M.x86.R_DI); + + DEBUG_PRINTF_VBE("%s: getting color #%x --> 0x%04x\n", __func__, + color_number, *color_value); + + return 0; +} + +// VBE Function 15h +static u8 +vbe_get_ddc_info(vbe_ddc_info_t * ddc_info) +{ + vbe_prepare(); + // call VBE function 15h (DDC Info Function) + M.x86.R_EAX = 0x4f15; + M.x86.R_BL = 0x00; // get DDC Info + M.x86.R_CX = ddc_info->port_number; + M.x86.R_ES = 0x0; + M.x86.R_DI = 0x0; + + // enable trace + CHECK_DBG(DEBUG_TRACE_X86EMU) { + X86EMU_trace_on(); + } + // run VESA Interrupt + runInt10(); + + if (M.x86.R_AL != 0x4f) { + DEBUG_PRINTF_VBE + ("%s: VBE Get DDC Info Function NOT supported! AL=%x\n", + __func__, M.x86.R_AL); + return -1; + } + + if (M.x86.R_AH != 0x0) { + DEBUG_PRINTF_VBE + ("%s: port: %x VBE Get DDC Info Function Return Code NOT OK! AH=%x\n", + __func__, ddc_info->port_number, M.x86.R_AH); + return M.x86.R_AH; + } + // BH = approx. time in seconds to transfer one EDID block + ddc_info->edid_transfer_time = M.x86.R_BH; + // BL = DDC Level + ddc_info->ddc_level = M.x86.R_BL; + + vbe_prepare(); + // call VBE function 15h (DDC Info Function) + M.x86.R_EAX = 0x4f15; + M.x86.R_BL = 0x01; // read EDID + M.x86.R_CX = ddc_info->port_number; + M.x86.R_DX = 0x0; // block number + // ES:DI is address where EDID is stored, we store it at 2000:0000 + M.x86.R_ES = 0x2000; + M.x86.R_DI = 0x0; + + // enable trace + CHECK_DBG(DEBUG_TRACE_X86EMU) { + X86EMU_trace_on(); + } + // run VESA Interrupt + runInt10(); + + if (M.x86.R_AL != 0x4f) { + DEBUG_PRINTF_VBE + ("%s: VBE Read EDID Function NOT supported! AL=%x\n", + __func__, M.x86.R_AL); + return -1; + } + + if (M.x86.R_AH != 0x0) { + DEBUG_PRINTF_VBE + ("%s: port: %x VBE Read EDID Function Return Code NOT OK! AH=%x\n", + __func__, ddc_info->port_number, M.x86.R_AH); + return M.x86.R_AH; + } + + memcpy(ddc_info->edid_block_zero, + biosmem + (M.x86.R_ES << 4) + M.x86.R_DI, + sizeof(ddc_info->edid_block_zero)); + + return 0; +} + +static u32 +vbe_get_info(void) +{ + u8 rval; + int i; + + // XXX FIXME these need to be filled with sane values + + // get a copy of input struct... + screen_info_input_t input; + // output is pointer to the address passed as argv[4] + screen_info_t local_output; + screen_info_t *output = &local_output; + // zero input + memset(&input, 0, sizeof(screen_info_input_t)); + // zero output + memset(&output, 0, sizeof(screen_info_t)); + + vbe_info_t info; + rval = vbe_info(&info); + if (rval != 0) + return rval; + + DEBUG_PRINTF_VBE("VbeSignature: %s\n", info.signature); + DEBUG_PRINTF_VBE("VbeVersion: 0x%04x\n", info.version); + DEBUG_PRINTF_VBE("OemString: %s\n", info.oem_string_ptr); + DEBUG_PRINTF_VBE("Capabilities:\n"); + DEBUG_PRINTF_VBE("\tDAC: %s\n", + (info.capabilities & 0x1) == + 0 ? "fixed 6bit" : "switchable 6/8bit"); + DEBUG_PRINTF_VBE("\tVGA: %s\n", + (info.capabilities & 0x2) == + 0 ? "compatible" : "not compatible"); + DEBUG_PRINTF_VBE("\tRAMDAC: %s\n", + (info.capabilities & 0x4) == + 0 ? "normal" : "use blank bit in Function 09h"); + + // argv[4] may be a pointer with enough space to return screen_info_t + // as input, it must contain a screen_info_input_t with the following content: + // byte[0:3] = "DDC\0" (zero-terminated signature header) + // byte[4:5] = reserved space for the return struct... just in case we ever change + // the struct and dont have reserved enough memory (and let's hope the struct + // never gets larger than 64KB) + // byte[6] = monitor port number for DDC requests ("only" one byte... so lets hope we never have more than 255 monitors... + // byte[7:8] = max. screen width (OF may want to limit this) + // byte[9] = required color depth in bpp + if (strncmp((char *) input.signature, "DDC", 4) != 0) { + printf + ("%s: Invalid input signature! expected: %s, is: %s\n", + __func__, "DDC", input.signature); + return -1; + } + if (input.size_reserved != sizeof(screen_info_t)) { + printf + ("%s: Size of return struct is wrong, required: %d, available: %d\n", + __func__, (int) sizeof(screen_info_t), + input.size_reserved); + return -1; + } + + vbe_ddc_info_t ddc_info; + ddc_info.port_number = input.monitor_number; + vbe_get_ddc_info(&ddc_info); + +#if 0 + DEBUG_PRINTF_VBE("DDC: edid_tranfer_time: %d\n", + ddc_info.edid_transfer_time); + DEBUG_PRINTF_VBE("DDC: ddc_level: %x\n", ddc_info.ddc_level); + DEBUG_PRINTF_VBE("DDC: EDID: \n"); + CHECK_DBG(DEBUG_VBE) { + dump(ddc_info.edid_block_zero, + sizeof(ddc_info.edid_block_zero)); + } +#endif +/* This could fail because of alignment issues, so use a longer form. + *((u64 *) ddc_info.edid_block_zero) != (u64) 0x00FFFFFFFFFFFF00ULL +*/ + if (ddc_info.edid_block_zero[0] != 0x00 || + ddc_info.edid_block_zero[1] != 0xFF || + ddc_info.edid_block_zero[2] != 0xFF || + ddc_info.edid_block_zero[3] != 0xFF || + ddc_info.edid_block_zero[4] != 0xFF || + ddc_info.edid_block_zero[5] != 0xFF || + ddc_info.edid_block_zero[6] != 0xFF || + ddc_info.edid_block_zero[7] != 0x00 ) { + // invalid EDID signature... probably no monitor + + output->display_type = 0x0; + return 0; + } else if ((ddc_info.edid_block_zero[20] & 0x80) != 0) { + // digital display + output->display_type = 2; + } else { + // analog + output->display_type = 1; + } + DEBUG_PRINTF_VBE("DDC: found display type %d\n", output->display_type); + memcpy(output->edid_block_zero, ddc_info.edid_block_zero, + sizeof(ddc_info.edid_block_zero)); + i = 0; + vbe_mode_info_t mode_info; + vbe_mode_info_t best_mode_info; + // initialize best_mode to 0 + memset(&best_mode_info, 0, sizeof(best_mode_info)); + while ((mode_info.video_mode = info.video_mode_list[i]) != 0xFFFF) { + //DEBUG_PRINTF_VBE("%x: Mode: %04x\n", i, mode_info.video_mode); + vbe_get_mode_info(&mode_info); + + // FIXME all these values are little endian! + + DEBUG_PRINTF_VBE("Video Mode 0x%04x available, %s\n", + mode_info.video_mode, + (le16_to_cpu(mode_info.vesa.mode_attributes) & 0x1) == + 0 ? "not supported" : "supported"); + DEBUG_PRINTF_VBE("\tTTY: %s\n", + (le16_to_cpu(mode_info.vesa.mode_attributes) & 0x4) == + 0 ? "no" : "yes"); + DEBUG_PRINTF_VBE("\tMode: %s %s\n", + (le16_to_cpu(mode_info.vesa.mode_attributes) & 0x8) == + 0 ? "monochrome" : "color", + (le16_to_cpu(mode_info.vesa.mode_attributes) & 0x10) == + 0 ? "text" : "graphics"); + DEBUG_PRINTF_VBE("\tVGA: %s\n", + (le16_to_cpu(mode_info.vesa.mode_attributes) & 0x20) == + 0 ? "compatible" : "not compatible"); + DEBUG_PRINTF_VBE("\tWindowed Mode: %s\n", + (le16_to_cpu(mode_info.vesa.mode_attributes) & 0x40) == + 0 ? "yes" : "no"); + DEBUG_PRINTF_VBE("\tFramebuffer: %s\n", + (le16_to_cpu(mode_info.vesa.mode_attributes) & 0x80) == + 0 ? "no" : "yes"); + DEBUG_PRINTF_VBE("\tResolution: %dx%d\n", + le16_to_cpu(mode_info.vesa.x_resolution), + le16_to_cpu(mode_info.vesa.y_resolution)); + DEBUG_PRINTF_VBE("\tChar Size: %dx%d\n", + mode_info.vesa.x_charsize, mode_info.vesa.y_charsize); + DEBUG_PRINTF_VBE("\tColor Depth: %dbpp\n", + mode_info.vesa.bits_per_pixel); + DEBUG_PRINTF_VBE("\tMemory Model: 0x%x\n", + mode_info.vesa.memory_model); + DEBUG_PRINTF_VBE("\tFramebuffer Offset: %08x\n", + le32_to_cpu(mode_info.vesa.phys_base_ptr)); + + if ((mode_info.vesa.bits_per_pixel == input.color_depth) + && (le16_to_cpu(mode_info.vesa.x_resolution) <= input.max_screen_width) + && ((le16_to_cpu(mode_info.vesa.mode_attributes) & 0x80) != 0) // framebuffer mode + && ((le16_to_cpu(mode_info.vesa.mode_attributes) & 0x10) != 0) // graphics + && ((le16_to_cpu(mode_info.vesa.mode_attributes) & 0x8) != 0) // color + && (le16_to_cpu(mode_info.vesa.x_resolution) > le16_to_cpu(best_mode_info.vesa.x_resolution))) // better than previous best_mode + { + // yiiiihaah... we found a new best mode + memcpy(&best_mode_info, &mode_info, sizeof(mode_info)); + } + i++; + } + + if (best_mode_info.video_mode != 0) { + DEBUG_PRINTF_VBE + ("Best Video Mode found: 0x%x, %dx%d, %dbpp, framebuffer_address: 0x%x\n", + best_mode_info.video_mode, + best_mode_info.vesa.x_resolution, + best_mode_info.vesa.y_resolution, + best_mode_info.vesa.bits_per_pixel, + le32_to_cpu(best_mode_info.vesa.phys_base_ptr)); + + //printf("Mode Info Dump:"); + //dump(best_mode_info.mode_info_block, 64); + + // set the video mode + vbe_set_mode(&best_mode_info); + + if ((info.capabilities & 0x1) != 0) { + // switch to 8 bit palette format + vbe_set_palette_format(8); + } + // setup a palette: + // - first 216 colors are mixed colors for each component in 6 steps + // (6*6*6=216) + // - then 10 shades of the three primary colors + // - then 10 shades of grey + // ------- + // = 256 colors + // + // - finally black is color 0 and white color FF (because SLOF expects it + // this way...) + // this resembles the palette that the kernel/X Server seems to expect... + + u8 mixed_color_values[6] = + { 0xFF, 0xDA, 0xB3, 0x87, 0x54, 0x00 }; + u8 primary_color_values[10] = + { 0xF3, 0xE7, 0xCD, 0xC0, 0xA5, 0x96, 0x77, 0x66, 0x3F, + 0x27 + }; + u8 mc_size = sizeof(mixed_color_values); + u8 prim_size = sizeof(primary_color_values); + + u8 curr_color_index; + u32 curr_color; + + u8 r, g, b; + // 216 mixed colors + for (r = 0; r < mc_size; r++) { + for (g = 0; g < mc_size; g++) { + for (b = 0; b < mc_size; b++) { + curr_color_index = + (r * mc_size * mc_size) + + (g * mc_size) + b; + curr_color = 0; + curr_color |= ((u32) mixed_color_values[r]) << 16; //red value + curr_color |= ((u32) mixed_color_values[g]) << 8; //green value + curr_color |= (u32) mixed_color_values[b]; //blue value + vbe_set_color(curr_color_index, + curr_color); + } + } + } + + // 10 shades of each primary color + // red + for (r = 0; r < prim_size; r++) { + curr_color_index = mc_size * mc_size * mc_size + r; + curr_color = ((u32) primary_color_values[r]) << 16; + vbe_set_color(curr_color_index, curr_color); + } + //green + for (g = 0; g < prim_size; g++) { + curr_color_index = + mc_size * mc_size * mc_size + prim_size + g; + curr_color = ((u32) primary_color_values[g]) << 8; + vbe_set_color(curr_color_index, curr_color); + } + //blue + for (b = 0; b < prim_size; b++) { + curr_color_index = + mc_size * mc_size * mc_size + prim_size * 2 + b; + curr_color = (u32) primary_color_values[b]; + vbe_set_color(curr_color_index, curr_color); + } + // 10 shades of grey + for (i = 0; i < prim_size; i++) { + curr_color_index = + mc_size * mc_size * mc_size + prim_size * 3 + i; + curr_color = 0; + curr_color |= ((u32) primary_color_values[i]) << 16; //red + curr_color |= ((u32) primary_color_values[i]) << 8; //green + curr_color |= ((u32) primary_color_values[i]); //blue + vbe_set_color(curr_color_index, curr_color); + } + + // SLOF is using color 0x0 (black) and 0xFF (white) to draw to the screen... + vbe_set_color(0x00, 0x00000000); + vbe_set_color(0xFF, 0x00FFFFFF); + + output->screen_width = le16_to_cpu(best_mode_info.vesa.x_resolution); + output->screen_height = le16_to_cpu(best_mode_info.vesa.y_resolution); + output->screen_linebytes = le16_to_cpu(best_mode_info.vesa.bytes_per_scanline); + output->color_depth = best_mode_info.vesa.bits_per_pixel; + output->framebuffer_address = + le32_to_cpu(best_mode_info.vesa.phys_base_ptr); + } else { + printf("%s: No suitable video mode found!\n", __func__); + //unset display_type... + output->display_type = 0; + } + return 0; +} +#endif + +vbe_mode_info_t mode_info; + +void vbe_set_graphics(void) +{ + u8 rval; + + vbe_info_t info; + rval = vbe_info(&info); + if (rval != 0) + return; + + DEBUG_PRINTF_VBE("VbeSignature: %s\n", info.signature); + DEBUG_PRINTF_VBE("VbeVersion: 0x%04x\n", info.version); + DEBUG_PRINTF_VBE("OemString: %s\n", info.oem_string_ptr); + DEBUG_PRINTF_VBE("Capabilities:\n"); + DEBUG_PRINTF_VBE("\tDAC: %s\n", + (info.capabilities & 0x1) == + 0 ? "fixed 6bit" : "switchable 6/8bit"); + DEBUG_PRINTF_VBE("\tVGA: %s\n", + (info.capabilities & 0x2) == + 0 ? "compatible" : "not compatible"); + DEBUG_PRINTF_VBE("\tRAMDAC: %s\n", + (info.capabilities & 0x4) == + 0 ? "normal" : "use blank bit in Function 09h"); + + mode_info.video_mode = (1 << 14) | CONFIG_FRAMEBUFFER_VESA_MODE; + vbe_get_mode_info(&mode_info); + vbe_set_mode(&mode_info); + +#if CONFIG_BOOTSPLASH + unsigned char *framebuffer = + (unsigned char *) le32_to_cpu(mode_info.vesa.phys_base_ptr); + DEBUG_PRINTF_VBE("FRAMEBUFFER: 0x%p\n", framebuffer); + + struct jpeg_decdata *decdata; + decdata = malloc(sizeof(*decdata)); + + /* Switching Intel IGD to 1MB video memory will break this. Who + * cares. */ + // int imagesize = 1024*768*2; + + unsigned char *jpeg = cbfs_find_file("bootsplash.jpg", CBFS_TYPE_BOOTSPLASH); + if (!jpeg) { + DEBUG_PRINTF_VBE("Could not find bootsplash.jpg\n"); + return; + } + DEBUG_PRINTF_VBE("Splash at %p ...\n", jpeg); + dump(jpeg, 64); + + int ret = 0; + DEBUG_PRINTF_VBE("Decompressing boot splash screen...\n"); + ret = jpeg_decode(jpeg, framebuffer, 1024, 768, 16, decdata); + DEBUG_PRINTF_VBE("returns %x\n", ret); +#endif +} + +void fill_lb_framebuffer(struct lb_framebuffer *framebuffer) +{ + framebuffer->physical_address = le32_to_cpu(mode_info.vesa.phys_base_ptr); + + framebuffer->x_resolution = le16_to_cpu(mode_info.vesa.x_resolution); + framebuffer->y_resolution = le16_to_cpu(mode_info.vesa.y_resolution); + framebuffer->bytes_per_line = le16_to_cpu(mode_info.vesa.bytes_per_scanline); + framebuffer->bits_per_pixel = mode_info.vesa.bits_per_pixel; + + framebuffer->red_mask_pos = mode_info.vesa.red_mask_pos; + framebuffer->red_mask_size = mode_info.vesa.red_mask_size; + + framebuffer->green_mask_pos = mode_info.vesa.green_mask_pos; + framebuffer->green_mask_size = mode_info.vesa.green_mask_size; + + framebuffer->blue_mask_pos = mode_info.vesa.blue_mask_pos; + framebuffer->blue_mask_size = mode_info.vesa.blue_mask_size; + + framebuffer->reserved_mask_pos = mode_info.vesa.reserved_mask_pos; + framebuffer->reserved_mask_size = mode_info.vesa.reserved_mask_size; +} + +void vbe_textmode_console(void) +{ + /* Wait, just a little bit more, pleeeease ;-) */ + delay(2); + + M.x86.R_EAX = 0x0003; + runInt10(); +} + +#endif diff --git a/src/device/oprom/yabel/vbe.h b/src/device/oprom/yabel/vbe.h new file mode 100644 index 0000000000..bf286bc12c --- /dev/null +++ b/src/device/oprom/yabel/vbe.h @@ -0,0 +1,23 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#ifndef _BIOSEMU_VBE_H_ +#define _BIOSEMU_VBE_H_ + +struct lb_framebuffer; + +void vbe_set_graphics(void); +int vbe_mode_info_valid(void); +void fill_lb_framebuffer(struct lb_framebuffer *framebuffer); +void vbe_textmode_console(void); + +#endif |