Revision: linuxbios@linuxbios.org--devel/freebios--devel--2.0--patch-36

Creator:  Li-Ta Lo <ollie@lanl.gov>

emulator update

Correction to the reduce emulator from Paulo


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1952 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

5 files changed, 27 insertions, 34 deletions

diff --git a/src/devices/emulator/x86emu/debug.c b/src/devices/emulator/x86emu/debug.c
index dd47e3d3a5..e25229a689 100644
--- a/src/devices/emulator/x86emu/debug.c
+++ b/src/devices/emulator/x86emu/debug.c
@@ -225,6 +225,7 @@ void X86EMU_dump_memory (u16 seg, u16 off, u32 amt)
 
 void x86emu_single_step (void)
 {
+#if 0
     char s[1024];
     int ps[10];
     int ntok;
@@ -313,6 +314,7 @@ void x86emu_single_step (void)
             break;
         }
     }
+#endif
 }
 
 int X86EMU_trace_on(void)
@@ -327,6 +329,7 @@ int X86EMU_trace_off(void)
 
 static int parse_line (char *s, int *ps, int *n)
 {
+#if 0
     int cmd;
 
     *n = 0;
@@ -352,6 +355,7 @@ static int parse_line (char *s, int *ps, int *n)
         sscanf(s,"%x",&ps[*n]);
         *n += 1;
     }
+#endif
 }
 
 #endif /* DEBUG */
diff --git a/src/devices/emulator/x86emu/decode.c b/src/devices/emulator/x86emu/decode.c
index 1badb2db7c..e7010fe579 100644
--- a/src/devices/emulator/x86emu/decode.c
+++ b/src/devices/emulator/x86emu/decode.c
@@ -77,6 +77,8 @@ 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;
 }
diff --git a/src/devices/emulator/x86emu/ops.c b/src/devices/emulator/x86emu/ops.c
index 2534b65863..4666e93ff4 100644
--- a/src/devices/emulator/x86emu/ops.c
+++ b/src/devices/emulator/x86emu/ops.c
@@ -70,7 +70,7 @@
 *
 ****************************************************************************/
 
-#include "x86emui.h"
+#include "x86emu/x86emui.h"
 
 /*----------------------------- Implementation ----------------------------*/
 
@@ -219,7 +219,8 @@ void x86emuOp_genop_byte_RM_R(u8 op1)
         DECODE_PRINTF("\n");
         TRACE_AND_STEP();
         destval = genop_byte_operation[op1](destval, *srcreg);
-        store_data_byte(destoffset, destval);
+        if (op1 != 7)
+            store_data_byte(destoffset, destval);
         }
     else
         {                       /* register to register */
@@ -262,7 +263,8 @@ void x86emuOp_genop_word_RM_R(u8 op1)
             DECODE_PRINTF("\n");
             TRACE_AND_STEP();
             destval = genop_long_operation[op1](destval, *srcreg);
-            store_data_long(destoffset, destval);
+            if (op1 != 7)
+                store_data_long(destoffset, destval);
         } else {
             u16 destval;
             u16 *srcreg;
@@ -273,11 +275,12 @@ void x86emuOp_genop_word_RM_R(u8 op1)
             DECODE_PRINTF("\n");
             TRACE_AND_STEP();
             destval = genop_word_operation[op1](destval, *srcreg);
-            store_data_word(destoffset, destval);
+            if (op1 != 7)
+                store_data_word(destoffset, destval);
         }
     } else {                    /* register to register */
         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg,*srcreg;
+            u32 *destreg, *srcreg;
 
             destreg = DECODE_RM_LONG_REGISTER(rl);
             DECODE_PRINTF(",");
@@ -286,7 +289,7 @@ void x86emuOp_genop_word_RM_R(u8 op1)
             TRACE_AND_STEP();
             *destreg = genop_long_operation[op1](*destreg, *srcreg);
         } else {
-            u16 *destreg,*srcreg;
+            u16 *destreg, *srcreg;
 
             destreg = DECODE_RM_WORD_REGISTER(rl);
             DECODE_PRINTF(",");
@@ -1332,9 +1335,7 @@ void x86emuOp_opc80_byte_RM_IMM(u8 X86EMU_UNUSED(op1))
         imm = fetch_byte_imm();
         DECODE_PRINTF2("%x\n", imm);
         TRACE_AND_STEP();
-        destval = (*genop_byte_operation[rh]) (*destreg, imm);
-        if (rh != 7)
-            *destreg = destval;
+        *destreg = (*genop_byte_operation[rh]) (*destreg, imm);
     }
     DECODE_CLEAR_SEGOVR();
     END_OF_INSTR();
@@ -1423,29 +1424,23 @@ void x86emuOp_opc81_word_RM_IMM(u8 X86EMU_UNUSED(op1))
         }
     } else {                     /* register to register */
         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 destval,imm;
+            u32 *destreg, imm;
 
             destreg = DECODE_RM_LONG_REGISTER(rl);
             DECODE_PRINTF(",");
             imm = fetch_long_imm();
             DECODE_PRINTF2("%x\n", imm);
             TRACE_AND_STEP();
-            destval = (*genop_long_operation[rh]) (*destreg, imm);
-            if (rh != 7)
-                *destreg = destval;
+            *destreg = (*genop_long_operation[rh]) (*destreg, imm);
         } else {
-            u16 *destreg;
-            u16 destval,imm;
+            u16 *destreg, imm;
 
             destreg = DECODE_RM_WORD_REGISTER(rl);
             DECODE_PRINTF(",");
             imm = fetch_word_imm();
             DECODE_PRINTF2("%x\n", imm);
             TRACE_AND_STEP();
-            destval = (*genop_word_operation[rh]) (*destreg, imm);
-            if (rh != 7)
-                *destreg = destval;
+            *destreg = (*genop_word_operation[rh]) (*destreg, imm);
         }
     }
     DECODE_CLEAR_SEGOVR();
@@ -1523,9 +1518,7 @@ void x86emuOp_opc82_byte_RM_IMM(u8 X86EMU_UNUSED(op1))
         imm = fetch_byte_imm();
         DECODE_PRINTF2(",%x\n", imm);
         TRACE_AND_STEP();
-        destval = (*genop_byte_operation[rh]) (*destreg, imm);
-        if (rh != 7)
-            *destreg = destval;
+        *destreg = (*genop_byte_operation[rh]) (*destreg, imm);
     }
     DECODE_CLEAR_SEGOVR();
     END_OF_INSTR();
@@ -1611,27 +1604,21 @@ void x86emuOp_opc83_word_RM_IMM(u8 X86EMU_UNUSED(op1))
         }
     } else {                     /* register to register */
         if (M.x86.mode & SYSMODE_PREFIX_DATA) {
-            u32 *destreg;
-            u32 destval,imm;
+            u32 *destreg, imm;
 
             destreg = DECODE_RM_LONG_REGISTER(rl);
             imm = (s8) fetch_byte_imm();
             DECODE_PRINTF2(",%x\n", imm);
             TRACE_AND_STEP();
-            destval = (*genop_long_operation[rh]) (*destreg, imm);
-            if (rh != 7)
-                *destreg = destval;
+            *destreg = (*genop_long_operation[rh]) (*destreg, imm);
         } else {
-            u16 *destreg;
-            u16 destval,imm;
+            u16 *destreg, imm;
 
             destreg = DECODE_RM_WORD_REGISTER(rl);
             imm = (s8) fetch_byte_imm();
             DECODE_PRINTF2(",%x\n", imm);
             TRACE_AND_STEP();
-            destval = (*genop_word_operation[rh]) (*destreg, imm);
-            if (rh != 7)
-                *destreg = destval;
+            *destreg = (*genop_word_operation[rh]) (*destreg, imm);
         }
     }
     DECODE_CLEAR_SEGOVR();
diff --git a/src/devices/emulator/x86emu/ops2.c b/src/devices/emulator/x86emu/ops2.c
index 6afd36e2e9..448d968570 100644
--- a/src/devices/emulator/x86emu/ops2.c
+++ b/src/devices/emulator/x86emu/ops2.c
@@ -61,7 +61,7 @@ void x86emuOp2_illegal_op(
     END_OF_INSTR();
 }
 
-#define xorl(a,b)   ((a) && !(b)) || (!(a) && (b))
+#define xorl(a,b)   (((a) && !(b)) || (!(a) && (b)))
 
 /****************************************************************************
 REMARKS:
diff --git a/src/devices/emulator/x86emu/prim_ops.c b/src/devices/emulator/x86emu/prim_ops.c
index a707521d49..fa19cb4844 100644
--- a/src/devices/emulator/x86emu/prim_ops.c
+++ b/src/devices/emulator/x86emu/prim_ops.c
@@ -1921,7 +1921,7 @@ 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 = (s32)d * (s32)s;
+    s64 res = (s64)d * (s64)s;
 
     *res_lo = (u32)res;
     *res_hi = (u32)(res >> 32);