diff options
| author | Stefan Reinauer <stepan@coresystems.de> | 2009-03-01 10:16:01 +0000 |
|---|---|---|
| committer | Stefan Reinauer <stepan@openbios.org> | 2009-03-01 10:16:01 +0000 |
| commit | 36c83404a356b5dc379dbd46e25514e487f01ec8 (patch) | |
| tree | f2c9a9637dd0142ec72afd2d6f6f81a2eff877fb /src/devices/emulator | |
| parent | 2b34db8d1de2d63ffa829fe03db0ce2aaba40233 (diff) | |
Some changes required to get yabel working on v2 (and they generally make
sense, too). Have one u64 instead of three.
In order to use the old bios emulator, you have to do nothing. (Default, if
CONFIG_PCI_ROM_RUN is enabled)
In order to use yabel in your target, you need to add the following lines to
your config:
uses CONFIG_PCI_OPTION_ROM_RUN_YABEL
default CONFIG_PCI_OPTION_ROM_RUN_YABEL=1
In order to use vm86 in your target, you need to add the following lines to
your config:
uses CONFIG_PCI_OPTION_ROM_RUN_VM86
default CONFIG_PCI_OPTION_ROM_RUN_VM86=1
Note: vm86 only works on platforms with _RAMBASE in the lower megabyte.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Joseph Smith <joe@settoplinux.org>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3965 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/devices/emulator')
21 files changed, 0 insertions, 14976 deletions
diff --git a/src/devices/emulator/Config.lb b/src/devices/emulator/Config.lb deleted file mode 100644 index 348880b1a8..0000000000 --- a/src/devices/emulator/Config.lb +++ /dev/null @@ -1,4 +0,0 @@ -object biosemu.o - -dir pcbios -dir x86emu diff --git a/src/devices/emulator/biosemu.c b/src/devices/emulator/biosemu.c deleted file mode 100644 index ebe5fc1df9..0000000000 --- a/src/devices/emulator/biosemu.c +++ /dev/null @@ -1,340 +0,0 @@ -#include <arch/io.h> -#include <console/console.h> -#include <device/device.h> -#include <device/pci.h> -#include <device/pci_ids.h> -#include <device/pci_ops.h> - -#include <x86emu/x86emu.h> - -#include "pcbios/pcibios.h" - -#define MEM_WB(where, what) wrb(where, what) -#define MEM_WW(where, what) wrw(where, what) -#define MEM_WL(where, what) wrl(where, what) - -#define MEM_RB(where) rdb(where) -#define MEM_RW(where) rdw(where) -#define MEM_RL(where) rdl(where) - -u8 x_inb(u16 port); -u16 x_inw(u16 port); -void x_outb(u16 port, u8 val); -void x_outw(u16 port, u16 val); -u32 x_inl(u16 port); -void x_outl(u16 port, u32 val); - - -// sys.c -void X86EMU_setMemBase(void *base, size_t size); - -/* general software interrupt handler */ -u32 getIntVect(int num) -{ - return MEM_RW(num << 2) + (MEM_RW((num << 2) + 2) << 4); -} - -/* FixME: There is already a push_word() in the emulator */ -void pushw(u16 val) -{ - X86_ESP -= 2; - MEM_WW(((u32) X86_SS << 4) + X86_SP, val); -} - -int run_bios_int(int num) -{ - u32 eflags; - - eflags = X86_EFLAGS; - pushw(eflags); - pushw(X86_CS); - pushw(X86_IP); - X86_CS = MEM_RW((num << 2) + 2); - X86_IP = MEM_RW(num << 2); - - return 1; -} - -u8 x_inb(u16 port) -{ - u8 val; - - val = inb(port); - - //if (port != 0x40) - // printk_debug("inb(0x%04x) = 0x%02x\n", port, val); - - return val; -} - -u16 x_inw(u16 port) -{ - u16 val; - - val = inw(port); - - //printk_debug("inw(0x%04x) = 0x%04x\n", port, val); - return val; -} - -u32 x_inl(u16 port) -{ - u32 val; - - val = inl(port); - - //printk_debug("inl(0x%04x) = 0x%08x\n", port, val); - return val; -} - -void x_outb(u16 port, u8 val) -{ - //if (port != 0x43) - // printk_debug("outb(0x%02x, 0x%04x)\n", val, port); - outb(val, port); -} - -void x_outw(u16 port, u16 val) -{ - //printk_debug("outw(0x%04x, 0x%04x)\n", val, port); - outw(val, port); -} - -void x_outl(u16 port, u32 val) -{ - //printk_debug("outl(0x%08x, 0x%04x)\n", val, port); - outl(val, port); -} - -X86EMU_pioFuncs myfuncs = { - x_inb, x_inw, x_inl, - x_outb, x_outw, x_outl -}; - - - -/* Interrupt multiplexer */ - -void do_int(int num) -{ - int ret = 0; - -// printk_debug("int%x vector at %x\n", num, getIntVect(num)); - - switch (num) { -#ifndef _PC - case 0x10: - case 0x42: - case 0x6D: - if (getIntVect(num) == 0x0000) { - printk_debug("un-inited int vector\n"); - ret = 1; - } - if (getIntVect(num) == 0xFF065) { - //ret = int42_handler(); - ret = 1; - } - break; -#endif - case 0x15: - //ret = int15_handler(); - ret = 1; - break; - case 0x16: - //ret = int16_handler(); - ret = 0; - break; - case 0x1A: - ret = pcibios_handler(); - ret = 1; - break; - case 0xe6: - //ret = intE6_handler(); - ret = 0; - break; - default: - break; - } - - if (!ret) - ret = run_bios_int(num); - -} -#if 0 -#define SYS_BIOS 0xf0000 -/* - * here we are really paranoid about faking a "real" - * BIOS. Most of this information was pulled from - * dosemu. - */ -#if 0 -void setup_int_vect(void) -{ - int i; - - /* let the int vects point to the SYS_BIOS seg */ - for (i = 0; i < 0x80; i++) { - MEM_WW(i << 2, 0); - MEM_WW((i << 2) + 2, SYS_BIOS >> 4); - } - - reset_int_vect(); - - /* font tables default location (int 1F) */ - MEM_WW(0x1f << 2, 0xfa6e); - /* int 11 default location (Get Equipment Configuration) */ - MEM_WW(0x11 << 2, 0xf84d); - /* int 12 default location (Get Conventional Memory Size) */ - MEM_WW(0x12 << 2, 0xf841); - /* int 15 default location (I/O System Extensions) */ - MEM_WW(0x15 << 2, 0xf859); - /* int 1A default location (RTC, PCI and others) */ - MEM_WW(0x1a << 2, 0xff6e); - /* int 05 default location (Bound Exceeded) */ - MEM_WW(0x05 << 2, 0xff54); - /* int 08 default location (Double Fault) */ - MEM_WW(0x08 << 2, 0xfea5); - /* int 13 default location (Disk) */ - MEM_WW(0x13 << 2, 0xec59); - /* int 0E default location (Page Fault) */ - MEM_WW(0x0e << 2, 0xef57); - /* int 17 default location (Parallel Port) */ - MEM_WW(0x17 << 2, 0xefd2); - /* fdd table default location (int 1e) */ - MEM_WW(0x1e << 2, 0xefc7); - - /* Set Equipment flag to VGA */ - i = MEM_RB(0x0410) & 0xCF; - MEM_WB(0x0410, i); - /* XXX Perhaps setup more of the BDA here. See also int42(0x00). */ -} - -int setup_system_bios(void *base_addr) -{ - char *base = (char *) base_addr; - - /* - * we trap the "industry standard entry points" to the BIOS - * and all other locations by filling them with "hlt" - * TODO: implement hlt-handler for these - */ - memset(base, 0xf4, 0x10000); - - /* set bios date */ - //strcpy(base + 0x0FFF5, "06/11/99"); - /* set up eisa ident string */ - //strcpy(base + 0x0FFD9, "PCI_ISA"); - /* write system model id for IBM-AT */ - //*((unsigned char *) (base + 0x0FFFE)) = 0xfc; - - return 1; -} -#endif - -void reset_int_vect(void) -{ - /* - * This table is normally located at 0xF000:0xF0A4. However, int 0x42, - * function 0 (Mode Set) expects it (or a copy) somewhere in the bottom - * 64kB. Note that because this data doesn't survive POST, int 0x42 should - * only be used during EGA/VGA BIOS initialisation. - */ - static const u8 VideoParms[] = { - /* Timing for modes 0x00 & 0x01 */ - 0x38, 0x28, 0x2d, 0x0a, 0x1f, 0x06, 0x19, 0x1c, - 0x02, 0x07, 0x06, 0x07, 0x00, 0x00, 0x00, 0x00, - /* Timing for modes 0x02 & 0x03 */ - 0x71, 0x50, 0x5a, 0x0a, 0x1f, 0x06, 0x19, 0x1c, - 0x02, 0x07, 0x06, 0x07, 0x00, 0x00, 0x00, 0x00, - /* Timing for modes 0x04, 0x05 & 0x06 */ - 0x38, 0x28, 0x2d, 0x0a, 0x7f, 0x06, 0x64, 0x70, - 0x02, 0x01, 0x06, 0x07, 0x00, 0x00, 0x00, 0x00, - /* Timing for mode 0x07 */ - 0x61, 0x50, 0x52, 0x0f, 0x19, 0x06, 0x19, 0x19, - 0x02, 0x0d, 0x0b, 0x0c, 0x00, 0x00, 0x00, 0x00, - /* Display page lengths in little endian order */ - 0x00, 0x08, /* Modes 0x00 and 0x01 */ - 0x00, 0x10, /* Modes 0x02 and 0x03 */ - 0x00, 0x40, /* Modes 0x04 and 0x05 */ - 0x00, 0x40, /* Modes 0x06 and 0x07 */ - /* Number of columns for each mode */ - 40, 40, 80, 80, 40, 40, 80, 80, - /* CGA Mode register value for each mode */ - 0x2c, 0x28, 0x2d, 0x29, 0x2a, 0x2e, 0x1e, 0x29, - /* Padding */ - 0x00, 0x00, 0x00, 0x00 - }; - int i; - - for (i = 0; i < sizeof(VideoParms); i++) - MEM_WB(i + (0x1000 - sizeof(VideoParms)), VideoParms[i]); - MEM_WW(0x1d << 2, 0x1000 - sizeof(VideoParms)); - MEM_WW((0x1d << 2) + 2, 0); - - printk_debug("SETUP INT\n"); - MEM_WW(0x10 << 2, 0xf065); - MEM_WW((0x10 << 2) + 2, SYS_BIOS >> 4); - MEM_WW(0x42 << 2, 0xf065); - MEM_WW((0x42 << 2) + 2, SYS_BIOS >> 4); - MEM_WW(0x6D << 2, 0xf065); - MEM_WW((0x6D << 2) + 2, SYS_BIOS >> 4); -} -#endif -void run_bios(struct device * dev, unsigned long addr) -{ -#if 1 - int i; - unsigned short initialcs = (addr & 0xF0000) >> 4; - unsigned short initialip = (addr + 3) & 0xFFFF; - unsigned short devfn = dev->bus->secondary << 8 | dev->path.pci.devfn; - X86EMU_intrFuncs intFuncs[256]; - - X86EMU_setMemBase(0, 0x100000); - X86EMU_setupPioFuncs(&myfuncs); - for (i = 0; i < 256; i++) - intFuncs[i] = do_int; - X86EMU_setupIntrFuncs(intFuncs); - - { - char *date = "01/01/99"; - for (i = 0; date[i]; i++) - wrb(0xffff5 + i, date[i]); - wrb(0xffff7, '/'); - wrb(0xffffa, '/'); - } - - { - /* FixME: move PIT init to its own file */ - outb(0x36, 0x43); - outb(0x00, 0x40); - outb(0x00, 0x40); - } - //setup_int_vect(); - - /* cpu setup */ - X86_AX = devfn ? devfn : 0xff; - X86_DX = 0x80; - X86_EIP = initialip; - X86_CS = initialcs; - - /* Initialize stack and data segment */ - X86_SS = initialcs; - X86_SP = 0xfffe; - X86_DS = 0x0040; - X86_ES = 0x0000; - - /* We need a sane way to return from bios - * execution. A hlt instruction and a pointer - * to it, both kept on the stack, will do. - */ - pushw(0xf4f4); /* hlt; hlt */ - pushw(X86_SS); - pushw(X86_SP + 2); - -// X86EMU_trace_on(); - - printk_info("entering emulator\n"); - - X86EMU_exec(); -#endif -} diff --git a/src/devices/emulator/pcbios/Config.lb b/src/devices/emulator/pcbios/Config.lb deleted file mode 100644 index 231b6629b5..0000000000 --- a/src/devices/emulator/pcbios/Config.lb +++ /dev/null @@ -1 +0,0 @@ -object pcibios.o
\ No newline at end of file diff --git a/src/devices/emulator/pcbios/pcibios.c b/src/devices/emulator/pcbios/pcibios.c deleted file mode 100644 index 365eaca02b..0000000000 --- a/src/devices/emulator/pcbios/pcibios.c +++ /dev/null @@ -1,140 +0,0 @@ -#include <console/console.h> -#include <device/device.h> -#include <device/pci.h> -#include <device/pci_ids.h> -#include <device/pci_ops.h> -#include <x86emu/x86emu.h> - -#include "pcibios.h" - -int pcibios_handler(void) -{ - int ret = 0; - struct device *dev = 0; - - switch (X86_AX) { - case PCI_BIOS_PRESENT: - X86_AH = 0x00; /* no config space/special cycle support */ - X86_AL = 0x01; /* config mechanism 1 */ - X86_EDX = 'P' | 'C' << 8 | 'I' << 16 | ' ' << 24; - X86_EBX = 0x0210; /* Version 2.10 */ - X86_ECX = 0xFF00; /* FixME: Max bus number */ - X86_EFLAGS &= ~FB_CF; /* clear carry flag */ - ret = 1; - break; - case FIND_PCI_DEVICE: - /* FixME: support SI != 0 */ - dev = dev_find_device(X86_DX, X86_CX, dev); - if (dev != 0) { - X86_BH = dev->bus->secondary; - X86_BL = dev->path.pci.devfn; - X86_AH = SUCCESSFUL; - X86_EFLAGS &= ~FB_CF; /* clear carry flag */ - ret = 1; - } else { - X86_AH = DEVICE_NOT_FOUND; - X86_EFLAGS |= FB_CF; /* set carry flag */ - ret = 0; - } - break; - case FIND_PCI_CLASS_CODE: - /* FixME: support SI != 0 */ - dev = dev_find_class(X86_ECX, dev); - if (dev != 0) { - X86_BH = dev->bus->secondary; - X86_BL = dev->path.pci.devfn; - X86_AH = SUCCESSFUL; - X86_EFLAGS &= ~FB_CF; /* clear carry flag */ - ret = 1; - } else { - X86_AH = DEVICE_NOT_FOUND; - X86_EFLAGS |= FB_CF; /* set carry flag */ - ret = 0; - } - break; - case READ_CONFIG_BYTE: - dev = dev_find_slot(X86_BH, X86_BL); - if (dev != 0) { - X86_CL = pci_read_config8(dev, X86_DI); - X86_AH = SUCCESSFUL; - X86_EFLAGS &= ~FB_CF; /* clear carry flag */ - ret = 1; - } else { - X86_AH = DEVICE_NOT_FOUND; - X86_EFLAGS |= FB_CF; /* set carry flag */ - ret = 0; - } - break; - case READ_CONFIG_WORD: - dev = dev_find_slot(X86_BH, X86_BL); - if (dev != 0) { - X86_CX = pci_read_config16(dev, X86_DI); - X86_AH = SUCCESSFUL; - X86_EFLAGS &= ~FB_CF; /* clear carry flag */ - ret = 1; - } else { - X86_AH = DEVICE_NOT_FOUND; - X86_EFLAGS |= FB_CF; /* set carry flag */ - ret = 0; - } - break; - case READ_CONFIG_DWORD: - dev = dev_find_slot(X86_BH, X86_BL); - if (dev != 0) { - X86_ECX = pci_read_config32(dev, X86_DI); - X86_AH = SUCCESSFUL; - X86_EFLAGS &= ~FB_CF; /* clear carry flag */ - ret = 1; - } else { - X86_AH = DEVICE_NOT_FOUND; - X86_EFLAGS |= FB_CF; /* set carry flag */ - ret = 0; - } - break; - case WRITE_CONFIG_BYTE: - dev = dev_find_slot(X86_BH, X86_BL); - if (dev != 0) { - pci_write_config8(dev, X86_DI, X86_CL); - X86_AH = SUCCESSFUL; - X86_EFLAGS &= ~FB_CF; /* clear carry flag */ - ret = 1; - } else { - X86_AH = DEVICE_NOT_FOUND; - X86_EFLAGS |= FB_CF; /* set carry flag */ - ret = 0; - } - break; - case WRITE_CONFIG_WORD: - dev = dev_find_slot(X86_BH, X86_BL); - if (dev != 0) { - pci_write_config16(dev, X86_DI, X86_CX); - X86_AH = SUCCESSFUL; - X86_EFLAGS &= ~FB_CF; /* clear carry flag */ - ret = 1; - } else { - X86_AH = DEVICE_NOT_FOUND; - X86_EFLAGS |= FB_CF; /* set carry flag */ - ret = 0; - } - break; - case WRITE_CONFIG_DWORD: - dev = dev_find_slot(X86_BH, X86_BL); - if (dev != 0) { - pci_write_config16(dev, X86_DI, X86_ECX); - X86_AH = SUCCESSFUL; - X86_EFLAGS &= ~FB_CF; /* clear carry flag */ - ret = 1; - } else { - X86_AH = DEVICE_NOT_FOUND; - X86_EFLAGS |= FB_CF; /* set carry flag */ - ret = 0; - } - break; - default: - X86_AH = FUNC_NOT_SUPPORTED; - X86_EFLAGS |= FB_CF; - break; - } - - return ret; -} diff --git a/src/devices/emulator/pcbios/pcibios.h b/src/devices/emulator/pcbios/pcibios.h deleted file mode 100644 index 2ad9b83561..0000000000 --- a/src/devices/emulator/pcbios/pcibios.h +++ /dev/null @@ -1,31 +0,0 @@ -#ifndef PCI_BIOS_H -#define PCI_BIOS_H - -enum { - PCI_BIOS_PRESENT = 0xB101, - FIND_PCI_DEVICE = 0xB102, - FIND_PCI_CLASS_CODE = 0xB103, - GENERATE_SPECIAL_CYCLE = 0xB106, - READ_CONFIG_BYTE = 0xB108, - READ_CONFIG_WORD = 0xB109, - READ_CONFIG_DWORD = 0xB10A, - WRITE_CONFIG_BYTE = 0xB10B, - WRITE_CONFIG_WORD = 0xB10C, - WRITE_CONFIG_DWORD = 0xB10D, - GET_IRQ_ROUTING_OPTIONS = 0xB10E, - SET_PCI_IRQ = 0xB10F -}; - -enum { - SUCCESSFUL = 0x00, - FUNC_NOT_SUPPORTED = 0x81, - BAD_VENDOR_ID = 0x83, - DEVICE_NOT_FOUND = 0x86, - BAD_REGISTER_NUMBER = 0x87, - SET_FAILED = 0x88, - BUFFER_TOO_SMALL = 0x89 -}; - -int pcibios_handler(void); - -#endif /* PCI_BIOS_H */ diff --git a/src/devices/emulator/x86emu/Config.lb b/src/devices/emulator/x86emu/Config.lb deleted file mode 100644 index 20e8072204..0000000000 --- a/src/devices/emulator/x86emu/Config.lb +++ /dev/null @@ -1,7 +0,0 @@ -object debug.o -object decode.o -object fpu.o -object ops.o -object ops2.o -object prim_ops.o -object sys.o diff --git a/src/devices/emulator/x86emu/LICENSE b/src/devices/emulator/x86emu/LICENSE deleted file mode 100644 index a3ede4a87d..0000000000 --- a/src/devices/emulator/x86emu/LICENSE +++ /dev/null @@ -1,17 +0,0 @@ - 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/devices/emulator/x86emu/debug.c b/src/devices/emulator/x86emu/debug.c deleted file mode 100644 index fea52bfd38..0000000000 --- a/src/devices/emulator/x86emu/debug.c +++ /dev/null @@ -1,435 +0,0 @@ -/**************************************************************************** -* -* 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" -#include <stdarg.h> - -/*----------------------------- Implementation ----------------------------*/ - -#ifdef DEBUG - -static void print_encoded_bytes (u16 s, u16 o); -static void print_decoded_instruction (void); -static 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()) { - printk("%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! - */ - printk("%04x:%04x ",M.x86.saved_cs, M.x86.saved_ip); - print_encoded_bytes( M.x86.saved_cs, M.x86.saved_ip); - print_decoded_instruction(); -} - -static 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 (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 (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)); - } - printk("%-20s ",buf1); -} - -static void print_decoded_instruction (void) -{ - printk("%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); - printk("%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) { - printk("%04x:%04x ", seg, start); - for (i=start; i< off; i++) - printk(" "); - for ( ; i< end; i++) - printk("%02x ", fetch_data_byte_abs(seg,i)); - printk("\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) { - printk("-"); - 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; - printk("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); -} - -static 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) -{ - printk("\tAX=%04x ", M.x86.R_AX ); - printk("BX=%04x ", M.x86.R_BX ); - printk("CX=%04x ", M.x86.R_CX ); - printk("DX=%04x ", M.x86.R_DX ); - printk("SP=%04x ", M.x86.R_SP ); - printk("BP=%04x ", M.x86.R_BP ); - printk("SI=%04x ", M.x86.R_SI ); - printk("DI=%04x\n", M.x86.R_DI ); - printk("\tDS=%04x ", M.x86.R_DS ); - printk("ES=%04x ", M.x86.R_ES ); - printk("SS=%04x ", M.x86.R_SS ); - printk("CS=%04x ", M.x86.R_CS ); - printk("IP=%04x ", M.x86.R_IP ); - if (ACCESS_FLAG(F_OF)) printk("OV "); /* CHECKED... */ - else printk("NV "); - if (ACCESS_FLAG(F_DF)) printk("DN "); - else printk("UP "); - if (ACCESS_FLAG(F_IF)) printk("EI "); - else printk("DI "); - if (ACCESS_FLAG(F_SF)) printk("NG "); - else printk("PL "); - if (ACCESS_FLAG(F_ZF)) printk("ZR "); - else printk("NZ "); - if (ACCESS_FLAG(F_AF)) printk("AC "); - else printk("NA "); - if (ACCESS_FLAG(F_PF)) printk("PE "); - else printk("PO "); - if (ACCESS_FLAG(F_CF)) printk("CY "); - else printk("NC "); - printk("\n"); -} - -void x86emu_dump_xregs (void) -{ - printk("\tEAX=%08x ", M.x86.R_EAX ); - printk("EBX=%08x ", M.x86.R_EBX ); - printk("ECX=%08x ", M.x86.R_ECX ); - printk("EDX=%08x \n", M.x86.R_EDX ); - printk("\tESP=%08x ", M.x86.R_ESP ); - printk("EBP=%08x ", M.x86.R_EBP ); - printk("ESI=%08x ", M.x86.R_ESI ); - printk("EDI=%08x\n", M.x86.R_EDI ); - printk("\tDS=%04x ", M.x86.R_DS ); - printk("ES=%04x ", M.x86.R_ES ); - printk("SS=%04x ", M.x86.R_SS ); - printk("CS=%04x ", M.x86.R_CS ); - printk("EIP=%08x\n\t", M.x86.R_EIP ); - if (ACCESS_FLAG(F_OF)) printk("OV "); /* CHECKED... */ - else printk("NV "); - if (ACCESS_FLAG(F_DF)) printk("DN "); - else printk("UP "); - if (ACCESS_FLAG(F_IF)) printk("EI "); - else printk("DI "); - if (ACCESS_FLAG(F_SF)) printk("NG "); - else printk("PL "); - if (ACCESS_FLAG(F_ZF)) printk("ZR "); - else printk("NZ "); - if (ACCESS_FLAG(F_AF)) printk("AC "); - else printk("NA "); - if (ACCESS_FLAG(F_PF)) printk("PE "); - else printk("PO "); - if (ACCESS_FLAG(F_CF)) printk("CY "); - else printk("NC "); - printk("\n"); -} diff --git a/src/devices/emulator/x86emu/debug.h b/src/devices/emulator/x86emu/debug.h deleted file mode 100644 index 882e92dfcb..0000000000 --- a/src/devices/emulator/x86emu/debug.h +++ /dev/null @@ -1,225 +0,0 @@ -/**************************************************************************** -* -* 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 - -#if defined(DEBUG) && (DEBUG == 0) -#undef DEBUG -#endif - -/*---------------------- Macros and type definitions ----------------------*/ - -/* 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()) \ - printk("%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()) \ - printk("%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()) \ - printk("%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 - -/*-------------------------- Function Prototypes --------------------------*/ - -#ifdef __cplusplus -extern "C" { /* Use "C" linkage when in C++ mode */ -#endif - -extern void x86emu_inc_decoded_inst_len (int x); -extern void x86emu_decode_printf (char *x); -extern void x86emu_decode_printf2 (char *x, int y); -extern void x86emu_just_disassemble (void); -extern void x86emu_single_step (void); -extern void x86emu_end_instr (void); -extern void x86emu_dump_regs (void); -extern void x86emu_dump_xregs (void); -extern void x86emu_print_int_vect (u16 iv); -extern void x86emu_instrument_instruction (void); -extern void x86emu_check_ip_access (void); -extern void x86emu_check_sp_access (void); -extern void x86emu_check_mem_access (u32 p); -extern void x86emu_check_data_access (uint s, uint o); - -#ifdef __cplusplus -} /* End of "C" linkage for C++ */ -#endif - -#endif /* __X86EMU_DEBUG_H */ diff --git a/src/devices/emulator/x86emu/decode.c b/src/devices/emulator/x86emu/decode.c deleted file mode 100644 index e7010fe579..0000000000 --- a/src/devices/emulator/x86emu/decode.c +++ /dev/null @@ -1,1149 +0,0 @@ -/**************************************************************************** -* -* 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) -{ - printk("%s, rasing execption %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) { - printk("halted\n"); - X86EMU_trace_regs(); - } - else { - if (M.x86.debug) - printk("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 - printk("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. -****************************************************************************/ -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. -****************************************************************************/ -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/devices/emulator/x86emu/decode.h b/src/devices/emulator/x86emu/decode.h deleted file mode 100644 index 99ed7f6f35..0000000000 --- a/src/devices/emulator/x86emu/decode.h +++ /dev/null @@ -1,88 +0,0 @@ -/**************************************************************************** -* -* 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/devices/emulator/x86emu/fpu.c b/src/devices/emulator/x86emu/fpu.c deleted file mode 100644 index 85f55c8854..0000000000 --- a/src/devices/emulator/x86emu/fpu.c +++ /dev/null @@ -1,945 +0,0 @@ -/**************************************************************************** -* -* 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 DEBUG - -static 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 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 destoffset; - u8 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 - -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 destoffset; - u8 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 - -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 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 -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 destoffset; - u8 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 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 destoffset; - u8 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 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 destoffset; - u8 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 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 destoffset; - u8 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/devices/emulator/x86emu/fpu.h b/src/devices/emulator/x86emu/fpu.h deleted file mode 100644 index 5fb271463b..0000000000 --- a/src/devices/emulator/x86emu/fpu.h +++ /dev/null @@ -1,61 +0,0 @@ -/**************************************************************************** -* -* 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/devices/emulator/x86emu/ops.c b/src/devices/emulator/x86emu/ops.c deleted file mode 100644 index ee4785a4cb..0000000000 --- a/src/devices/emulator/x86emu/ops.c +++ /dev/null @@ -1,5496 +0,0 @@ -/**************************************************************************** -* -* 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 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 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. -****************************************************************************/ -void x86emuOp_illegal_op( - u8 op1) -{ - START_OF_INSTR(); - if (M.x86.R_SP != 0) { - DECODE_PRINTF("ILLEGAL X86 OPCODE\n"); - TRACE_REGS(); - DB( printk("%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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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) -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -int x86emu_check_jump_condition(u8 op); - -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -void x86emuOp_lea_word_R_M(u8 X86EMU_UNUSED(op1)) -{ - int mod, rl, rh; - u16 *srcreg; - uint destoffset; - -/* - * TODO: Need to handle address size prefix! - * - * lea eax,[eax+ebx*2] ?? - */ - - START_OF_INSTR(); - DECODE_PRINTF("LEA\t"); - FETCH_DECODE_MODRM(mod, rh, rl); - if (mod < 3) { - 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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -void x86emuOp_call_far_IMM(u8 X86EMU_UNUSED(op1)) -{ - u16 farseg, faroff; - - START_OF_INSTR(); - DECODE_PRINTF("CALL\t"); - 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; - push_word(M.x86.R_IP); - M.x86.R_IP = faroff; - DECODE_CLEAR_SEGOVR(); - END_OF_INSTR(); -} - -/**************************************************************************** -REMARKS: -Handles opcode 0x9b -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -void x86emuOp_int3(u8 X86EMU_UNUSED(op1)) -{ - u16 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 -****************************************************************************/ -void x86emuOp_int_IMM(u8 X86EMU_UNUSED(op1)) -{ - u16 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 -****************************************************************************/ -void x86emuOp_into(u8 X86EMU_UNUSED(op1)) -{ - u16 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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -void x86emuOp_aad(u8 X86EMU_UNUSED(op1)) -{ - u8 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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -void x86emuOp_call_near_IMM(u8 X86EMU_UNUSED(op1)) -{ - s16 ip; - - START_OF_INSTR(); - DECODE_PRINTF("CALL\t"); - ip = (s16) fetch_word_imm(); - ip += (s16) M.x86.R_IP; /* CHECK SIGN */ - DECODE_PRINTF2("%04x\n", ip); - CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip, ""); - TRACE_AND_STEP(); - push_word(M.x86.R_IP); - M.x86.R_IP = ip; - DECODE_CLEAR_SEGOVR(); - END_OF_INSTR(); -} - -/**************************************************************************** -REMARKS: -Handles opcode 0xe9 -****************************************************************************/ -void x86emuOp_jump_near_IMM(u8 X86EMU_UNUSED(op1)) -{ - int ip; - - START_OF_INSTR(); - DECODE_PRINTF("JMP\t"); - ip = (s16)fetch_word_imm(); - ip += (s16)M.x86.R_IP; - DECODE_PRINTF2("%04x\n", 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 -****************************************************************************/ -void x86emuOp_jump_far_IMM(u8 X86EMU_UNUSED(op1)) -{ - u16 cs, ip; - - START_OF_INSTR(); - DECODE_PRINTF("JMP\tFAR "); - 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_IP = ip; - M.x86.R_CS = cs; - DECODE_CLEAR_SEGOVR(); - END_OF_INSTR(); -} - -/**************************************************************************** -REMARKS: -Handles opcode 0xeb -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -void x86emuOp_opcFF_word_RM(u8 X86EMU_UNUSED(op1)) -{ - int mod, rh, rl; - uint destoffset = 0; - u16 *destreg; - u16 destval,destval2; - - /* 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) { - u32 destval; - - destval = fetch_data_long(destoffset); - TRACE_AND_STEP(); - destval = inc_long(destval); - store_data_long(destoffset, destval); - } else { - u16 destval; - - 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) { - u32 destval; - - destval = fetch_data_long(destoffset); - TRACE_AND_STEP(); - destval = dec_long(destval); - store_data_long(destoffset, destval); - } else { - u16 destval; - - 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) { - u32 destval; - - destval = fetch_data_long(destoffset); - TRACE_AND_STEP(); - push_long(destval); - } else { - u16 destval; - - destval = fetch_data_word(destoffset); - TRACE_AND_STEP(); - push_word(destval); - } - break; - } - } else { - switch (rh) { - case 0: - if (M.x86.mode & SYSMODE_PREFIX_DATA) { - u32 *destreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = inc_long(*destreg); - } else { - u16 *destreg; - - 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) { - u32 *destreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - *destreg = dec_long(*destreg); - } else { - u16 *destreg; - - 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) { - u32 *destreg; - - destreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF("\n"); - TRACE_AND_STEP(); - push_long(*destreg); - } else { - u16 *destreg; - - 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/devices/emulator/x86emu/ops.h b/src/devices/emulator/x86emu/ops.h deleted file mode 100644 index 65ea676543..0000000000 --- a/src/devices/emulator/x86emu/ops.h +++ /dev/null @@ -1,45 +0,0 @@ -/**************************************************************************** -* -* 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); - -#endif /* __X86EMU_OPS_H */ diff --git a/src/devices/emulator/x86emu/ops2.c b/src/devices/emulator/x86emu/ops2.c deleted file mode 100644 index acefc304c8..0000000000 --- a/src/devices/emulator/x86emu/ops2.c +++ /dev/null @@ -1,1825 +0,0 @@ -/**************************************************************************** -* -* 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. -****************************************************************************/ -void x86emuOp2_illegal_op( - u8 op2) -{ - START_OF_INSTR(); - DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n"); - TRACE_REGS(); - printk("%04x:%04x: %02X ILLEGAL EXTENDED X86 OPCODE!\n", - M.x86.R_CS, M.x86.R_IP-2,op2); - HALT_SYS(); - 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)); - } -} - -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,0x90-0x9F -****************************************************************************/ -void x86emuOp2_set_byte(u8 op2) -{ - int mod, rl, rh; - uint destoffset; - u8 *destreg; - char *name = 0; - 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 -****************************************************************************/ -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 -****************************************************************************/ -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: -Handles opcode 0x0f,0xa3 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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,0xaa -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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 -****************************************************************************/ -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(); - printk("%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 -****************************************************************************/ -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 -****************************************************************************/ -void x86emuOp2_bsf(u8 X86EMU_UNUSED(op2)) -{ - int mod, rl, rh; - uint srcoffset; - - START_OF_INSTR(); - DECODE_PRINTF("BSF\n"); - 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 *srcreg, *dstreg; - - srcreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - dstreg = DECODE_RM_LONG_REGISTER(rh); - TRACE_AND_STEP(); - CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); - for(*dstreg = 0; *dstreg < 32; (*dstreg)++) - if ((*srcreg >> *dstreg) & 1) break; - } else { - u16 *srcreg, *dstreg; - - srcreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - dstreg = DECODE_RM_WORD_REGISTER(rh); - TRACE_AND_STEP(); - CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); - for(*dstreg = 0; *dstreg < 16; (*dstreg)++) - if ((*srcreg >> *dstreg) & 1) break; - } - } - DECODE_CLEAR_SEGOVR(); - END_OF_INSTR(); -} - -/**************************************************************************** -REMARKS: -Handles opcode 0x0f,0xbd -****************************************************************************/ -void x86emuOp2_bsr(u8 X86EMU_UNUSED(op2)) -{ - int mod, rl, rh; - uint srcoffset; - - START_OF_INSTR(); - DECODE_PRINTF("BSF\n"); - 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 *srcreg, *dstreg; - - srcreg = DECODE_RM_LONG_REGISTER(rl); - DECODE_PRINTF(","); - dstreg = DECODE_RM_LONG_REGISTER(rh); - TRACE_AND_STEP(); - CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); - for(*dstreg = 31; *dstreg > 0; (*dstreg)--) - if ((*srcreg >> *dstreg) & 1) break; - } else { - u16 *srcreg, *dstreg; - - srcreg = DECODE_RM_WORD_REGISTER(rl); - DECODE_PRINTF(","); - dstreg = DECODE_RM_WORD_REGISTER(rh); - TRACE_AND_STEP(); - CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF); - for(*dstreg = 15; *dstreg > 0; (*dstreg)--) - if ((*srcreg >> *dstreg) & 1) break; - } - } - DECODE_CLEAR_SEGOVR(); - END_OF_INSTR(); -} - -/**************************************************************************** -REMARKS: -Handles opcode 0x0f,0xbe -****************************************************************************/ -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 -****************************************************************************/ -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(); -} - -/**************************************************************************** -REMARKS: -Handles opcode 0x0f,0xC8-0xCF -****************************************************************************/ -s32 x86emu_bswap(s32 reg) -{ - // perform the byte swap - s32 temp = reg; - reg = (temp & 0xFF000000) >> 24; - reg |= (temp & 0xFF0000) >> 8; - reg |= (temp & 0xFF00) << 8; - reg |= (temp & 0xFF) << 24; - return reg; -} - -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(); -} - -/*************************************************************************** - * Double byte operation code table: - **************************************************************************/ -void (*x86emu_optab2[256])(u8) = -{ -/* 0x00 */ x86emuOp2_illegal_op, /* Group F (ring 0 PM) */ -/* 0x01 */ x86emuOp2_illegal_op, /* 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_illegal_op, /* invd (ring 0 PM) */ -/* 0x09 */ x86emuOp2_illegal_op, /* 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_illegal_op, -/* 0x31 */ x86emuOp2_illegal_op, -/* 0x32 */ x86emuOp2_illegal_op, -/* 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_illegal_op, -/* 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_bt_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/devices/emulator/x86emu/prim_asm.h b/src/devices/emulator/x86emu/prim_asm.h deleted file mode 100644 index 4fa8d55034..0000000000 --- a/src/devices/emulator/x86emu/prim_asm.h +++ /dev/null @@ -1,971 +0,0 @@ -/**************************************************************************** -* -* 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/devices/emulator/x86emu/prim_ops.c b/src/devices/emulator/x86emu/prim_ops.c deleted file mode 100644 index a4a46a20ee..0000000000 --- a/src/devices/emulator/x86emu/prim_ops.c +++ /dev/null @@ -1,2450 +0,0 @@ -/**************************************************************************** -* -* 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; -} - diff --git a/src/devices/emulator/x86emu/prim_ops.h b/src/devices/emulator/x86emu/prim_ops.h deleted file mode 100644 index f9f87eb43c..0000000000 --- a/src/devices/emulator/x86emu/prim_ops.h +++ /dev/null @@ -1,231 +0,0 @@ -/**************************************************************************** -* -* 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); - -#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/devices/emulator/x86emu/sys.c b/src/devices/emulator/x86emu/sys.c deleted file mode 100644 index 6f5a3d29c9..0000000000 --- a/src/devices/emulator/x86emu/sys.c +++ /dev/null @@ -1,410 +0,0 @@ -/**************************************************************************** -* -* 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 <x86emu/x86emu.h> -#include <x86emu/regs.h> -#include "debug.h" -#include "prim_ops.h" -#ifdef COREBOOT_VERSION /* Coreboot needs to map printf to printk. */ -#include "arch/io.h" -#else -#include <sys/io.h> -#endif - -#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! */ -u8 *mem_ptr(u32 addr, int size) -{ - u8 *retaddr = 0; - - if (addr > M.mem_size - size) { - DB(printk("mem_ptr: address %#x out of range!\n", addr);) - HALT_SYS(); - } - if (addr < 0x200) { - //printk("%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()) - printk("%#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()) - printk("%#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()) - printk("%#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()) - printk("%#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()) - printk("%#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()) - printk("%#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()) - printk("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()) - printk("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()) - printk("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()) - printk("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()) - printk("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()) - printk("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/devices/emulator/x86emu/x86emui.h b/src/devices/emulator/x86emu/x86emui.h deleted file mode 100644 index 044e2cb59e..0000000000 --- a/src/devices/emulator/x86emu/x86emui.h +++ /dev/null @@ -1,105 +0,0 @@ -/**************************************************************************** -* -* 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 -#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 <stdio.h> -#include <stdlib.h> -#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 */ |