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- /****************************************************************************
- * *
- * Third Year Project *
- * *
- * An IBM PC Emulator *
- * For Unix and X Windows *
- * *
- * By David Hedley *
- * *
- * *
- * This program is Copyrighted. Consult the file COPYRIGHT for more details *
- * *
- ****************************************************************************/
- /* This is CPU.C It emulates the 8086 processor */
- #include "../mmage/mmage.h"
- #include "global.h"
- #include <stdio.h>
- #include "mytypes.h"
- #include "cpu.h"
- #include "instr.h"
- #include "hardware.h"
- #ifdef DEBUGGER
- # include "debugger.h"
- #endif
- #ifdef DEBUG
- # include <stdlib.h>
- #endif
- WORD wregs[8]; /* Always little-endian */
- BYTE *bregs[16]; /* Points to bytes within wregs[] */
- unsigned sregs[4]; /* Always native machine word order */
- unsigned ip; /* Always native machine word order */
- /* All the byte flags will either be 1 or 0 */
- BYTE CF, PF, ZF, TF, IF, DF;
- /* All the word flags may be either none-zero (true) or zero (false) */
- unsigned AF, OF, SF;
- static UINT8 parity_table[256];
- static BYTE *ModRMRegB[256];
- static WORD *ModRMRegW[256];
- /* 'Shadows' of the segment registers. Point directly into the start of the
- segment within memory[] */
- BYTE *c_cs,*c_ds,*c_es,*c_ss,*c_stack;
- volatile int int_pending; /* Interrupt pending */
- volatile int int_blocked; /* Blocked pending */
- static struct
- {
- BYTE **segment;
- WORD *reg1;
- WORD *reg2;
- int offset;
- int offset16;
- int pad[3]; /* Make structure power of 2 bytes wide for speed */
- } ModRMRM[256];
- static WORD zero_word = 0;
- static WORD *ModRMRMWRegs[256];
- static BYTE *ModRMRMBRegs[256];
- void trap(void);
- #define PushSeg(Seg) \
- { \
- register unsigned tmp = (WORD)(ReadWord(&wregs[SP])-2); \
- WriteWord(&wregs[SP],tmp); \
- PutMemW(c_stack,tmp,sregs[Seg]); \
- }
- #define PopSeg(seg, Seg) \
- { \
- register unsigned tmp = ReadWord(&wregs[SP]); \
- sregs[Seg] = GetMemW(c_stack,tmp); \
- seg = SegToMemPtr(Seg); \
- tmp += 2; \
- WriteWord(&wregs[SP],tmp); \
- }
- #define PushWordReg(Reg) \
- { \
- register unsigned tmp1 = (WORD)(ReadWord(&wregs[SP])-2); \
- WORD tmp2; \
- WriteWord(&wregs[SP],tmp1); \
- tmp2 = ReadWord(&wregs[Reg]); \
- PutMemW(c_stack,tmp1,tmp2); \
- }
- #define PopWordReg(Reg) \
- { \
- register unsigned tmp = ReadWord(&wregs[SP]); \
- WORD tmp2 = GetMemW(c_stack,tmp); \
- tmp += 2; \
- WriteWord(&wregs[SP],tmp); \
- WriteWord(&wregs[Reg],tmp2); \
- }
- #define XchgAXReg(Reg) \
- { \
- register unsigned tmp; \
- tmp = wregs[Reg]; \
- wregs[Reg] = wregs[AX]; \
- wregs[AX] = tmp; \
- }
- #define IncWordReg(Reg) \
- { \
- register unsigned tmp = (unsigned)ReadWord(&wregs[Reg]); \
- register unsigned tmp1 = tmp+1; \
- SetOFW_Add(tmp1,tmp,1); \
- SetAF(tmp1,tmp,1); \
- SetZFW(tmp1); \
- SetSFW(tmp1); \
- SetPF(tmp1); \
- WriteWord(&wregs[Reg],tmp1); \
- }
- #define DecWordReg(Reg) \
- { \
- register unsigned tmp = (unsigned)ReadWord(&wregs[Reg]); \
- register unsigned tmp1 = tmp-1; \
- SetOFW_Sub(tmp1,1,tmp); \
- SetAF(tmp1,tmp,1); \
- SetZFW(tmp1); \
- SetSFW(tmp1); \
- SetPF(tmp1); \
- WriteWord(&wregs[Reg],tmp1); \
- }
- #define Logical_br8(op) \
- { \
- unsigned ModRM = (unsigned)GetMemInc(c_cs,ip); \
- register unsigned src = (unsigned)*GetModRMRegB(ModRM); \
- BYTE *dest = GetModRMRMB(ModRM); \
- register unsigned tmp = (unsigned) *dest; \
- tmp op ## = src; \
- CF = OF = AF = 0; \
- SetZFB(tmp); \
- SetSFB(tmp); \
- SetPF(tmp); \
- *dest = (BYTE)tmp; \
- }
- #define Logical_r8b(op) \
- { \
- unsigned ModRM = (unsigned)GetMemInc(c_cs,ip); \
- register unsigned src = (unsigned)*GetModRMRMB(ModRM); \
- BYTE *dest = GetModRMRegB(ModRM); \
- register unsigned tmp = (unsigned) *dest; \
- tmp op ## = src; \
- CF = OF = AF = 0; \
- SetZFB(tmp); \
- SetSFB(tmp); \
- SetPF(tmp); \
- *dest = (BYTE)tmp; \
- }
- #define Logical_wr16(op) \
- { \
- unsigned ModRM = GetMemInc(c_cs,ip); \
- WORD *src = GetModRMRegW(ModRM); \
- WORD *dest = GetModRMRMW(ModRM); \
- register unsigned tmp1 = (unsigned)ReadWord(src); \
- register unsigned tmp2 = (unsigned)ReadWord(dest); \
- register unsigned tmp3 = tmp1 op tmp2; \
- CF = OF = AF = 0; \
- SetZFW(tmp3); \
- SetSFW(tmp3); \
- SetPF(tmp3); \
- WriteWord(dest,tmp3); \
- }
- #define Logical_r16w(op) \
- { \
- unsigned ModRM = GetMemInc(c_cs,ip); \
- WORD *dest = GetModRMRegW(ModRM); \
- WORD *src = GetModRMRMW(ModRM); \
- register unsigned tmp1 = (unsigned)ReadWord(src); \
- register unsigned tmp2 = (unsigned)ReadWord(dest); \
- register unsigned tmp3 = tmp1 op tmp2; \
- CF = OF = AF = 0; \
- SetZFW(tmp3); \
- SetSFW(tmp3); \
- SetPF(tmp3); \
- WriteWord(dest,tmp3); \
- }
- #define Logical_ald8(op) \
- { \
- register unsigned tmp = *bregs[AL]; \
- tmp op ## = (unsigned)GetMemInc(c_cs,ip); \
- CF = OF = AF = 0; \
- SetZFB(tmp); \
- SetSFB(tmp); \
- SetPF(tmp); \
- *bregs[AL] = (BYTE)tmp; \
- }
- #define Logical_axd16(op) \
- { \
- register unsigned src; \
- register unsigned tmp = ReadWord(&wregs[AX]); \
- src = GetMemInc(c_cs,ip); \
- src += GetMemInc(c_cs,ip) << 8; \
- tmp op ## = src; \
- CF = OF = AF = 0; \
- SetZFW(tmp); \
- SetSFW(tmp); \
- SetPF(tmp); \
- WriteWord(&wregs[AX],tmp); \
- }
- #define LogicalOp(name,symbol) \
- static INLINE2 void i_ ## name ## _br8(void) \
- { Logical_br8(symbol); } \
- static INLINE2 void i_ ## name ## _wr16(void) \
- { Logical_wr16(symbol); } \
- static INLINE2 void i_ ## name ## _r8b(void) \
- { Logical_r8b(symbol); } \
- static INLINE2 void i_ ## name ## _r16w(void) \
- { Logical_r16w(symbol); } \
- static INLINE2 void i_ ## name ## _ald8(void) \
- { Logical_ald8(symbol); } \
- static INLINE2 void i_ ## name ## _axd16(void) \
- { Logical_axd16(symbol); }
- #define JumpCond(name, cond) \
- static INLINE2 void i_j ## name ## (void) \
- { \
- register int tmp = (int)((INT8)GetMemInc(c_cs,ip)); \
- if (cond) ip = (WORD)(ip+tmp); \
- }
- // WW BIOS �ˆ—�ƒ‹�[ƒ`ƒ“
- void int_handler(int no);
- void init_cpu(void)
- {
- unsigned int i,j,c;
- for (i = 0; i < 4; i++)
- {
- wregs[i] = 0;
- sregs[i] = 0x70;
- }
- for (; i < 8; i++)
- wregs[i] = 0;
-
- wregs[SP] = 0;
- ip = 0x100;
- for (i = 0;i < 256; i++)
- {
- for (j = i, c = 0; j > 0; j >>= 1)
- if (j & 1) c++;
-
- parity_table[i] = !(c & 1);
- }
-
- CF = PF = AF = ZF = SF = TF = IF = DF = OF = 0;
-
- bregs[AL] = (BYTE *)&wregs[AX];
- bregs[AH] = (BYTE *)&wregs[AX]+1;
- bregs[CL] = (BYTE *)&wregs[CX];
- bregs[CH] = (BYTE *)&wregs[CX]+1;
- bregs[DL] = (BYTE *)&wregs[DX];
- bregs[DH] = (BYTE *)&wregs[DX]+1;
- bregs[BL] = (BYTE *)&wregs[BX];
- bregs[BH] = (BYTE *)&wregs[BX]+1;
-
- bregs[SPL] = (BYTE *)&wregs[SP];
- bregs[SPH] = (BYTE *)&wregs[SP]+1;
- bregs[BPL] = (BYTE *)&wregs[BP];
- bregs[BPH] = (BYTE *)&wregs[BP]+1;
- bregs[SIL] = (BYTE *)&wregs[SI];
- bregs[SIH] = (BYTE *)&wregs[SI]+1;
- bregs[DIL] = (BYTE *)&wregs[DI];
- bregs[DIH] = (BYTE *)&wregs[DI]+1;
-
- for (i = 0; i < 256; i++)
- {
- ModRMRegB[i] = bregs[(i & 0x38) >> 3];
- ModRMRegW[i] = &wregs[(i & 0x38) >> 3];
- }
-
- for (i = 0; i < 0x40; i++)
- {
- switch (i & 7)
- {
- case 0:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &wregs[BX];
- ModRMRM[i].reg2 = &wregs[SI];
- ModRMRM[i].offset = ModRMRM[i].offset16 = 0;
- break;
- case 1:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &wregs[BX];
- ModRMRM[i].reg2 = &wregs[DI];
- ModRMRM[i].offset = ModRMRM[i].offset16 = 0;
- break;
- case 2:
- ModRMRM[i].segment = &c_ss;
- ModRMRM[i].reg1 = &wregs[BP];
- ModRMRM[i].reg2 = &wregs[SI];
- ModRMRM[i].offset = ModRMRM[i].offset16 = 0;
- break;
- case 3:
- ModRMRM[i].segment = &c_ss;
- ModRMRM[i].reg1 = &wregs[BP];
- ModRMRM[i].reg2 = &wregs[DI];
- ModRMRM[i].offset = ModRMRM[i].offset16 = 0;
- break;
- case 4:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &zero_word;
- ModRMRM[i].reg2 = &wregs[SI];
- ModRMRM[i].offset = ModRMRM[i].offset16 = 0;
- break;
- case 5:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &zero_word;
- ModRMRM[i].reg2 = &wregs[DI];
- ModRMRM[i].offset = ModRMRM[i].offset16 = 0;
- break;
- case 6:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &zero_word;
- ModRMRM[i].reg2 = &zero_word;
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 1;
- break;
- default:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &wregs[BX];
- ModRMRM[i].reg2 = &zero_word;
- ModRMRM[i].offset = ModRMRM[i].offset16 = 0;
- break;
- }
- }
-
- for (i = 0x40; i < 0x80; i++)
- {
- switch (i & 7)
- {
- case 0:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &wregs[BX];
- ModRMRM[i].reg2 = &wregs[SI];
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 0;
- break;
- case 1:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &wregs[BX];
- ModRMRM[i].reg2 = &wregs[DI];
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 0;
- break;
- case 2:
- ModRMRM[i].segment = &c_ss;
- ModRMRM[i].reg1 = &wregs[BP];
- ModRMRM[i].reg2 = &wregs[SI];
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 0;
- break;
- case 3:
- ModRMRM[i].segment = &c_ss;
- ModRMRM[i].reg1 = &wregs[BP];
- ModRMRM[i].reg2 = &wregs[DI];
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 0;
- break;
- case 4:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &zero_word;
- ModRMRM[i].reg2 = &wregs[SI];
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 0;
- break;
- case 5:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &zero_word;
- ModRMRM[i].reg2 = &wregs[DI];
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 0;
- break;
- case 6:
- ModRMRM[i].segment = &c_ss;
- ModRMRM[i].reg1 = &wregs[BP];
- ModRMRM[i].reg2 = &zero_word;
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 0;
- break;
- default:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &wregs[BX];
- ModRMRM[i].reg2 = &zero_word;
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 0;
- break;
- }
- }
-
- for (i = 0x80; i < 0xc0; i++)
- {
- switch (i & 7)
- {
- case 0:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &wregs[BX];
- ModRMRM[i].reg2 = &wregs[SI];
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 1;
- break;
- case 1:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &wregs[BX];
- ModRMRM[i].reg2 = &wregs[DI];
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 1;
- break;
- case 2:
- ModRMRM[i].segment = &c_ss;
- ModRMRM[i].reg1 = &wregs[BP];
- ModRMRM[i].reg2 = &wregs[SI];
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 1;
- break;
- case 3:
- ModRMRM[i].segment = &c_ss;
- ModRMRM[i].reg1 = &wregs[BP];
- ModRMRM[i].reg2 = &wregs[DI];
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 1;
- break;
- case 4:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &zero_word;
- ModRMRM[i].reg2 = &wregs[SI];
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 1;
- break;
- case 5:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &zero_word;
- ModRMRM[i].reg2 = &wregs[DI];
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 1;
- break;
- case 6:
- ModRMRM[i].segment = &c_ss;
- ModRMRM[i].reg1 = &wregs[BP];
- ModRMRM[i].reg2 = &zero_word;
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 1;
- break;
- default:
- ModRMRM[i].segment = &c_ds;
- ModRMRM[i].reg1 = &wregs[BX];
- ModRMRM[i].reg2 = &zero_word;
- ModRMRM[i].offset = 1;
- ModRMRM[i].offset16 = 1;
- break;
- }
- }
-
- for (i = 0xc0; i < 0x100; i++)
- {
- ModRMRMWRegs[i] = &wregs[i & 7];
- ModRMRMBRegs[i] = bregs[i & 7];
- }
- }
- #ifdef DEBUG2
- void loc(void)
- {
- printf("%04X:%04X ", sregs[CS], ip);
- }
- #endif
- static void interrupt(unsigned int_num)
- {
- // unsigned dest_seg, dest_off,tmp1;
- int_handler(int_num);
- /*
- i_pushf();
- dest_off = GetMemW(memory,int_num*4);
- dest_seg = GetMemW(memory,int_num*4+2);
- tmp1 = (WORD)(ReadWord(&wregs[SP])-2);
- PutMemW(c_stack,tmp1,sregs[CS]);
- tmp1 = (WORD)(tmp1-2);
- PutMemW(c_stack,tmp1,ip);
- WriteWord(&wregs[SP],tmp1);
- ip = (WORD)dest_off;
- sregs[CS] = (WORD)dest_seg;
- c_cs = SegToMemPtr(CS);
- */
- TF = IF = 0; /* Turn of trap and interrupts... */
- }
- static void external_int(void)
- {
- disable();
- #ifdef DEBUGGER
- call_debugger(D_INT);
- #endif
- D2(printf("Interrupt 0x%02X\n", int_pending););
- interrupt(int_pending);
- int_pending = 0;
- enable();
- }
- #define GetModRMRegW(ModRM) (ModRMRegW[ModRM])
- #define GetModRMRegB(ModRM) (ModRMRegB[ModRM])
- static INLINE WORD *GetModRMRMW(unsigned ModRM)
- {
- register unsigned dest;
- if (ModRM >= 0xc0)
- return ModRMRMWRegs[ModRM];
- dest = 0;
- if (ModRMRM[ModRM].offset)
- {
- dest = (WORD)((INT16)((INT8)GetMemInc(c_cs,ip)));
- if (ModRMRM[ModRM].offset16)
- dest = (GetMemInc(c_cs,ip) << 8) + (BYTE)dest;
- }
-
- return (WORD *)(*ModRMRM[ModRM].segment +
- (WORD)(ReadWord(ModRMRM[ModRM].reg1) +
- ReadWord(ModRMRM[ModRM].reg2) + dest));
- }
- static INLINE BYTE *GetModRMRMB(unsigned ModRM)
- {
- register unsigned dest;
-
- if (ModRM >= 0xc0)
- return ModRMRMBRegs[ModRM];
- dest = 0;
- if (ModRMRM[ModRM].offset)
- {
- dest = (WORD)((INT16)((INT8)GetMemInc(c_cs,ip)));
- if (ModRMRM[ModRM].offset16)
- dest = (GetMemInc(c_cs,ip) << 8) + (BYTE)dest;
- }
-
- return (*ModRMRM[ModRM].segment +
- (WORD)(ReadWord(ModRMRM[ModRM].reg1) +
- ReadWord(ModRMRM[ModRM].reg2) + dest));
- }
- /* i186 instructions */
- #include "i186.h"
- static INLINE2 void i_add_br8(void)
- {
- /* Opcode 0x00 */
- unsigned ModRM = (unsigned)GetMemInc(c_cs,ip);
- register unsigned src = (unsigned)*GetModRMRegB(ModRM);
- BYTE *dest = GetModRMRMB(ModRM);
- register unsigned tmp = (unsigned) *dest;
- register unsigned tmp2 = tmp;
-
- tmp += src;
-
- SetCFB_Add(tmp,tmp2);
- SetOFB_Add(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
- *dest = (BYTE)tmp;
- }
- static INLINE2 void i_add_wr16(void)
- {
- /* Opcode 0x01 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- WORD *src = GetModRMRegW(ModRM);
- WORD *dest = GetModRMRMW(ModRM);
- register unsigned tmp1 = (unsigned)ReadWord(dest);
- register unsigned tmp2 = (unsigned)ReadWord(src);
- register unsigned tmp3;
- tmp3 = tmp1+tmp2;
- SetCFW_Add(tmp3,tmp1);
- SetOFW_Add(tmp3,tmp2,tmp1);
- SetAF(tmp3,tmp2,tmp1);
- SetZFW(tmp3);
- SetSFW(tmp3);
- SetPF(tmp3);
- WriteWord(dest, tmp3);
- }
- static INLINE2 void i_add_r8b(void)
- {
- /* Opcode 0x02 */
- unsigned ModRM = (unsigned)GetMemInc(c_cs,ip);
- register unsigned src = (unsigned)*GetModRMRMB(ModRM);
- BYTE *dest = GetModRMRegB(ModRM);
- register unsigned tmp = (unsigned) *dest;
- register unsigned tmp2 = tmp;
- tmp += src;
- SetCFB_Add(tmp,tmp2);
- SetOFB_Add(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
- *dest = (BYTE)tmp;
- }
- static INLINE2 void i_add_r16w(void)
- {
- /* Opcode 0x03 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- WORD *dest = GetModRMRegW(ModRM);
- WORD *src = GetModRMRMW(ModRM);
- register unsigned tmp1 = (unsigned)ReadWord(dest);
- register unsigned tmp2 = (unsigned)ReadWord(src);
- register unsigned tmp3;
- tmp3 = tmp1 + tmp2;
- SetCFW_Add(tmp3,tmp1);
- SetOFW_Add(tmp3,tmp2,tmp1);
- SetAF(tmp3,tmp2,tmp1);
- SetZFW(tmp3);
- SetSFW(tmp3);
- SetPF(tmp3);
- WriteWord(dest, tmp3);
- }
- static INLINE2 void i_add_ald8(void)
- {
- /* Opcode 0x04 */
- register unsigned src = (unsigned)GetMemInc(c_cs,ip);
- register unsigned tmp = (unsigned)*bregs[AL];
- register unsigned tmp2 = tmp;
- tmp2 += src;
- SetCFB_Add(tmp2,tmp);
- SetOFB_Add(tmp2,src,tmp);
- SetAF(tmp2,src,tmp);
- SetZFB(tmp2);
- SetSFB(tmp2);
- SetPF(tmp2);
- *bregs[AL] = (BYTE)tmp2;
- }
- static INLINE2 void i_add_axd16(void)
- {
- /* Opcode 0x05 */
- register unsigned src;
- register unsigned tmp = ReadWord(&wregs[AX]);
- register unsigned tmp2 = tmp;
- src = GetMemInc(c_cs,ip);
- src += GetMemInc(c_cs,ip) << 8;
- tmp2 += src;
- SetCFW_Add(tmp2,tmp);
- SetOFW_Add(tmp2,tmp,src);
- SetAF(tmp2,tmp,src);
- SetZFW(tmp2);
- SetSFW(tmp2);
- SetPF(tmp2);
- WriteWord(&wregs[AX],tmp2);
- }
- static INLINE2 void i_push_es(void)
- {
- /* Opcode 0x06 */
- PushSeg(ES);
- }
- static INLINE2 void i_pop_es(void)
- {
- /* Opcode 0x07 */
- PopSeg(c_es,ES);
- }
- /* most OR instructions go here... */
- LogicalOp(or,|)
- static INLINE2 void i_push_cs(void)
- {
- /* Opcode 0x0e */
- PushSeg(CS);
- }
- static INLINE2 void i_adc_br8(void)
- {
- /* Opcode 0x10 */
- unsigned ModRM = (unsigned)GetMemInc(c_cs,ip);
- register unsigned src = (unsigned)*GetModRMRegB(ModRM)+CF;
- BYTE *dest = GetModRMRMB(ModRM);
- register unsigned tmp = (unsigned) *dest;
- register unsigned tmp2 = tmp;
- tmp += src;
- CF = tmp >> 8;
- /* SetCFB_Add(tmp,tmp2); */
- SetOFB_Add(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
- *dest = (BYTE)tmp;
- }
- static INLINE2 void i_adc_wr16(void)
- {
- /* Opcode 0x11 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- WORD *src = GetModRMRegW(ModRM);
- WORD *dest = GetModRMRMW(ModRM);
- register unsigned tmp1 = (unsigned)ReadWord(dest);
- register unsigned tmp2 = (unsigned)ReadWord(src)+CF;
- register unsigned tmp3;
- tmp3 = tmp1+tmp2;
- CF = tmp3 >> 16;
- /* SetCFW_Add(tmp3,tmp1); */
- SetOFW_Add(tmp3,tmp2,tmp1);
- SetAF(tmp3,tmp2,tmp1);
- SetZFW(tmp3);
- SetSFW(tmp3);
- SetPF(tmp3);
- WriteWord(dest, tmp3);
- }
- static INLINE2 void i_adc_r8b(void)
- {
- /* Opcode 0x12 */
- unsigned ModRM = (unsigned)GetMemInc(c_cs,ip);
- register unsigned src = (unsigned)*GetModRMRMB(ModRM)+CF;
- BYTE *dest = GetModRMRegB(ModRM);
- register unsigned tmp = (unsigned) *dest;
- register unsigned tmp2 = tmp;
- tmp += src;
- CF = tmp >> 8;
- /* SetCFB_Add(tmp,tmp2); */
- SetOFB_Add(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
- *dest = (BYTE)tmp;
- }
- static INLINE2 void i_adc_r16w(void)
- {
- /* Opcode 0x13 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- WORD *dest = GetModRMRegW(ModRM);
- WORD *src = GetModRMRMW(ModRM);
- register unsigned tmp1 = (unsigned)ReadWord(dest);
- register unsigned tmp2 = (unsigned)ReadWord(src)+CF;
- register unsigned tmp3;
- tmp3 = tmp1+tmp2;
- CF = tmp3 >> 16;
- /* SetCFW_Add(tmp3,tmp1); */
- SetOFW_Add(tmp3,tmp2,tmp1);
- SetAF(tmp3,tmp2,tmp1);
- SetZFW(tmp3);
- SetSFW(tmp3);
- SetPF(tmp3);
- WriteWord(dest, tmp3);
- }
- static INLINE2 void i_adc_ald8(void)
- {
- /* Opcode 0x14 */
- register unsigned src = (unsigned)GetMemInc(c_cs,ip)+CF;
- register unsigned tmp = (unsigned)*bregs[AL];
- register unsigned tmp2 = tmp;
- tmp2 += src;
- CF = tmp2 >> 8;
- /* SetCFB_Add(tmp2,tmp); */
- SetOFB_Add(tmp2,src,tmp);
- SetAF(tmp2,src,tmp);
- SetZFB(tmp2);
- SetSFB(tmp2);
- SetPF(tmp2);
- *bregs[AL] = (BYTE)tmp2;
- }
- static INLINE2 void i_adc_axd16(void)
- {
- /* Opcode 0x15 */
- register unsigned src;
- register unsigned tmp = ReadWord(&wregs[AX]);
- register unsigned tmp2 = tmp;
- src = GetMemInc(c_cs,ip);
- src += (GetMemInc(c_cs,ip) << 8)+CF;
- tmp2 += src;
- CF = tmp2 >> 16;
- /* SetCFW_Add(tmp2,tmp); */
- SetOFW_Add(tmp2,tmp,src);
- SetAF(tmp2,tmp,src);
- SetZFW(tmp2);
- SetSFW(tmp2);
- SetPF(tmp2);
- WriteWord(&wregs[AX],tmp2);
- }
- static INLINE2 void i_push_ss(void)
- {
- /* Opcode 0x16 */
- PushSeg(SS);
- }
- static INLINE2 void i_pop_ss(void)
- {
- /* Opcode 0x17 */
- static int multiple = 0;
- PopSeg(c_ss,SS);
- c_stack = c_ss;
-
- if (multiple == 0) /* prevent unlimited recursion */
- {
- multiple = 1;
- /*
- #ifdef DEBUGGER
- call_debugger(D_TRACE);
- #endif
- */
- instruction[GetMemInc(c_cs,ip)]();
- multiple = 0;
- }
- }
- static INLINE2 void i_sbb_br8(void)
- {
- /* Opcode 0x18 */
- unsigned ModRM = (unsigned)GetMemInc(c_cs,ip);
- register unsigned src = (unsigned)*GetModRMRegB(ModRM)+CF;
- BYTE *dest = GetModRMRMB(ModRM);
- register unsigned tmp = (unsigned) *dest;
- register unsigned tmp2 = tmp;
- tmp -= src;
- CF = (tmp & 0x100) == 0x100;
- /* SetCFB_Sub(tmp,tmp2); */
- SetOFB_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
- *dest = (BYTE)tmp;
- }
- static INLINE2 void i_sbb_wr16(void)
- {
- /* Opcode 0x19 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- WORD *src = GetModRMRegW(ModRM);
- WORD *dest = GetModRMRMW(ModRM);
- register unsigned tmp1 = ReadWord(dest);
- register unsigned tmp2 = ReadWord(src)+CF;
- register unsigned tmp3;
- tmp3 = tmp1-tmp2;
- CF = (tmp3 & 0x10000) == 0x10000;
- /* SetCFW_Sub(tmp2,tmp1); */
- SetOFW_Sub(tmp3,tmp2,tmp1);
- SetAF(tmp3,tmp2,tmp1);
- SetZFW(tmp3);
- SetSFW(tmp3);
- SetPF(tmp3);
- WriteWord(dest, tmp3);
- }
- static INLINE2 void i_sbb_r8b(void)
- {
- /* Opcode 0x1a */
- unsigned ModRM = (unsigned)GetMemInc(c_cs,ip);
- register unsigned src = (unsigned)*GetModRMRMB(ModRM)+CF;
- BYTE *dest = GetModRMRegB(ModRM);
- register unsigned tmp = (unsigned) *dest;
- register unsigned tmp2 = tmp;
- tmp -= src;
- CF = (tmp & 0x100) == 0x100;
- /* SetCFB_Sub(tmp,tmp2); */
- SetOFB_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
- *dest = (BYTE)tmp;
- }
- static INLINE2 void i_sbb_r16w(void)
- {
- /* Opcode 0x1b */
- unsigned ModRM = GetMemInc(c_cs,ip);
- WORD *dest = GetModRMRegW(ModRM);
- WORD *src = GetModRMRMW(ModRM);
- register unsigned tmp1 = ReadWord(dest);
- register unsigned tmp2 = ReadWord(src)+CF;
- register unsigned tmp3;
- tmp3 = tmp1-tmp2;
- CF = (tmp3 & 0x10000) == 0x10000;
- /* SetCFW_Sub(tmp2,tmp1); */
- SetOFW_Sub(tmp3,tmp2,tmp1);
- SetAF(tmp3,tmp2,tmp1);
- SetZFW(tmp3);
- SetSFW(tmp3);
- SetPF(tmp3);
- WriteWord(dest, tmp3);
- }
- static INLINE2 void i_sbb_ald8(void)
- {
- /* Opcode 0x1c */
- register unsigned src = GetMemInc(c_cs,ip)+CF;
- register unsigned tmp = *bregs[AL];
- register unsigned tmp1 = tmp;
- tmp1 -= src;
- CF = (tmp1 & 0x100) == 0x100;
- /* SetCFB_Sub(src,tmp); */
- SetOFB_Sub(tmp1,src,tmp);
- SetAF(tmp1,src,tmp);
- SetZFB(tmp1);
- SetSFB(tmp1);
- SetPF(tmp1);
- *bregs[AL] = (BYTE)tmp1;
- }
- static INLINE2 void i_sbb_axd16(void)
- {
- /* Opcode 0x1d */
- register unsigned src;
- register unsigned tmp = ReadWord(&wregs[AX]);
- register unsigned tmp2 = tmp;
- src = GetMemInc(c_cs,ip);
- src += (GetMemInc(c_cs,ip) << 8)+CF;
- tmp2 -= src;
- CF = (tmp2 & 0x10000) == 0x10000;
- /* SetCFW_Sub(src,tmp); */
- SetOFW_Sub(tmp2,src,tmp);
- SetAF(tmp2,tmp,src);
- SetZFW(tmp2);
- SetSFW(tmp2);
- SetPF(tmp2);
- WriteWord(&wregs[AX],tmp2);
- }
- static INLINE2 void i_push_ds(void)
- {
- /* Opcode 0x1e */
- PushSeg(DS);
- }
- static INLINE2 void i_pop_ds(void)
- {
- /* Opcode 0x1f */
- PopSeg(c_ds,DS);
- }
- /* most AND instructions go here... */
- LogicalOp(and,&)
- static INLINE2 void i_es(void)
- {
- /* Opcode 0x26 */
- c_ds = c_ss = c_es;
- instruction[GetMemInc(c_cs,ip)]();
- c_ds = SegToMemPtr(DS);
- c_ss = SegToMemPtr(SS);
- }
- static INLINE2 void i_daa(void)
- {
- if (AF || ((*bregs[AL] & 0xf) > 9))
- {
- *bregs[AL] += 6;
- AF = 1;
- }
- else
- AF = 0;
- if (CF || (*bregs[AL] > 0x9f))
- {
- *bregs[AL] += 0x60;
- CF = 1;
- }
- else
- CF = 0;
- SetPF(*bregs[AL]);
- SetSFB(*bregs[AL]);
- SetZFB(*bregs[AL]);
- }
- static INLINE2 void i_sub_br8(void)
- {
- /* Opcode 0x28 */
- unsigned ModRM = (unsigned)GetMemInc(c_cs,ip);
- register unsigned src = (unsigned)*GetModRMRegB(ModRM);
- BYTE *dest = GetModRMRMB(ModRM);
- register unsigned tmp = (unsigned) *dest;
- register unsigned tmp2 = tmp;
- tmp -= src;
- SetCFB_Sub(tmp,tmp2);
- SetOFB_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
- *dest = (BYTE)tmp;
- }
- static INLINE2 void i_sub_wr16(void)
- {
- /* Opcode 0x29 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- WORD *src = GetModRMRegW(ModRM);
- WORD *dest = GetModRMRMW(ModRM);
- register unsigned tmp1 = ReadWord(dest);
- register unsigned tmp2 = ReadWord(src);
- register unsigned tmp3;
- tmp3 = tmp1-tmp2;
- SetCFW_Sub(tmp2,tmp1);
- SetOFW_Sub(tmp3,tmp2,tmp1);
- SetAF(tmp3,tmp2,tmp1);
- SetZFW(tmp3);
- SetSFW(tmp3);
- SetPF(tmp3);
- WriteWord(dest, tmp3);
- }
- static INLINE2 void i_sub_r8b(void)
- {
- /* Opcode 0x2a */
- unsigned ModRM = (unsigned)GetMemInc(c_cs,ip);
- BYTE *dest = GetModRMRegB(ModRM);
- register unsigned src = *GetModRMRMB(ModRM);
- register unsigned tmp = *dest;
- register unsigned tmp2 = tmp;
- tmp -= src;
- SetCFB_Sub(tmp,tmp2);
- SetOFB_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
- *dest = (BYTE)tmp;
- }
- static INLINE2 void i_sub_r16w(void)
- {
- /* Opcode 0x2b */
- unsigned ModRM = GetMemInc(c_cs,ip);
- WORD *dest = GetModRMRegW(ModRM);
- WORD *src = GetModRMRMW(ModRM);
- register unsigned tmp1 = ReadWord(dest);
- register unsigned tmp2 = ReadWord(src);
- register unsigned tmp3;
- tmp3 = tmp1-tmp2;
- SetCFW_Sub(tmp2,tmp1);
- SetOFW_Sub(tmp3,tmp2,tmp1);
- SetAF(tmp3,tmp2,tmp1);
- SetZFW(tmp3);
- SetSFW(tmp3);
- SetPF(tmp3);
- WriteWord(dest, tmp3);
- }
- static INLINE2 void i_sub_ald8(void)
- {
- /* Opcode 0x2c */
- register unsigned src = GetMemInc(c_cs,ip);
- register unsigned tmp = *bregs[AL];
- register unsigned tmp1 = tmp;
- tmp1 -= src;
- SetCFB_Sub(src,tmp);
- SetOFB_Sub(tmp1,src,tmp);
- SetAF(tmp1,src,tmp);
- SetZFB(tmp1);
- SetSFB(tmp1);
- SetPF(tmp1);
- *bregs[AL] = (unsigned) tmp1;
- }
- static INLINE2 void i_sub_axd16(void)
- {
- /* Opcode 0x2d */
- register unsigned src;
- register unsigned tmp = ReadWord(&wregs[AX]);
- register unsigned tmp2 = tmp;
- src = GetMemInc(c_cs,ip);
- src += (GetMemInc(c_cs,ip) << 8);
- tmp2 -= src;
- SetCFW_Sub(src,tmp);
- SetOFW_Sub(tmp2,src,tmp);
- SetAF(tmp2,tmp,src);
- SetZFW(tmp2);
- SetSFW(tmp2);
- SetPF(tmp2);
- WriteWord(&wregs[AX],tmp2);
- }
- static INLINE2 void i_cs(void)
- {
- /* Opcode 0x2e */
- c_ds = c_ss = c_cs;
- instruction[GetMemInc(c_cs,ip)]();
- c_ds = SegToMemPtr(DS);
- c_ss = SegToMemPtr(SS);
- }
- /* most XOR instructions go here */
- LogicalOp(xor,^)
- static INLINE2 void i_ss(void)
- {
- /* Opcode 0x36 */
- c_ds = c_ss;
- instruction[GetMemInc(c_cs,ip)]();
- c_ds = SegToMemPtr(DS);
- }
- static INLINE2 void i_cmp_br8(void)
- {
- /* Opcode 0x38 */
- unsigned ModRM = (unsigned)GetMemInc(c_cs,ip);
- register unsigned src = (unsigned)*GetModRMRegB(ModRM);
- register unsigned tmp = *GetModRMRMB(ModRM);
- register unsigned tmp2 = tmp;
- tmp -= src;
- SetCFB_Sub(tmp,tmp2);
- SetOFB_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
- }
- static INLINE2 void i_cmp_wr16(void)
- {
- /* Opcode 0x39 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- WORD *src = GetModRMRegW(ModRM);
- WORD *dest = GetModRMRMW(ModRM);
- register unsigned tmp1 = ReadWord(dest);
- register unsigned tmp2 = ReadWord(src);
- register unsigned tmp3;
- tmp3 = tmp1-tmp2;
- SetCFW_Sub(tmp2,tmp1);
- SetOFW_Sub(tmp3,tmp2,tmp1);
- SetAF(tmp3,tmp2,tmp1);
- SetZFW(tmp3);
- SetSFW(tmp3);
- SetPF(tmp3);
- }
- static INLINE2 void i_cmp_r8b(void)
- {
- /* Opcode 0x3a */
- unsigned ModRM = (unsigned)GetMemInc(c_cs,ip);
- register unsigned tmp = (unsigned)*GetModRMRegB(ModRM);
- register unsigned src = *GetModRMRMB(ModRM);
- register unsigned tmp2 = tmp;
- tmp -= src;
- SetCFB_Sub(tmp,tmp2);
- SetOFB_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
- }
- static INLINE2 void i_cmp_r16w(void)
- {
- /* Opcode 0x3b */
- unsigned ModRM = GetMemInc(c_cs,ip);
- WORD *dest = GetModRMRegW(ModRM);
- WORD *src = GetModRMRMW(ModRM);
- register unsigned tmp1 = ReadWord(dest);
- register unsigned tmp2 = ReadWord(src);
- register unsigned tmp3;
- tmp3 = tmp1-tmp2;
- SetCFW_Sub(tmp2,tmp1);
- SetOFW_Sub(tmp3,tmp2,tmp1);
- SetAF(tmp3,tmp2,tmp1);
- SetZFW(tmp3);
- SetSFW(tmp3);
- SetPF(tmp3);
- }
- static INLINE2 void i_cmp_ald8(void)
- {
- /* Opcode 0x3c */
- register unsigned src = GetMemInc(c_cs,ip);
- register unsigned tmp = *bregs[AL];
- register unsigned tmp1 = tmp;
- tmp1 -= src;
- SetCFB_Sub(src,tmp);
- SetOFB_Sub(tmp1,src,tmp);
- SetAF(tmp1,src,tmp);
- SetZFB(tmp1);
- SetSFB(tmp1);
- SetPF(tmp1);
- }
- static INLINE2 void i_cmp_axd16(void)
- {
- /* Opcode 0x3d */
- register unsigned src;
- register unsigned tmp = ReadWord(&wregs[AX]);
- register unsigned tmp2 = tmp;
- src = GetMemInc(c_cs,ip);
- src += (GetMemInc(c_cs,ip) << 8);
- tmp2 -= src;
- SetCFW_Sub(src,tmp);
- SetOFW_Sub(tmp2,src,tmp);
- SetAF(tmp2,tmp,src);
- SetZFW(tmp2);
- SetSFW(tmp2);
- SetPF(tmp2);
- }
- static INLINE2 void i_ds(void)
- {
- /* Opcode 0x3e */
- c_ss = c_ds;
- instruction[GetMemInc(c_cs,ip)]();
- c_ss = SegToMemPtr(SS);
- }
- static INLINE2 void i_inc_ax(void)
- {
- /* Opcode 0x40 */
- IncWordReg(AX);
- }
- static INLINE2 void i_inc_cx(void)
- {
- /* Opcode 0x41 */
- IncWordReg(CX);
- }
- static INLINE2 void i_inc_dx(void)
- {
- /* Opcode 0x42 */
- IncWordReg(DX);
- }
- static INLINE2 void i_inc_bx(void)
- {
- /* Opcode 0x43 */
- IncWordReg(BX);
- }
- static INLINE2 void i_inc_sp(void)
- {
- /* Opcode 0x44 */
- IncWordReg(SP);
- }
- static INLINE2 void i_inc_bp(void)
- {
- /* Opcode 0x45 */
- IncWordReg(BP);
- }
- static INLINE2 void i_inc_si(void)
- {
- /* Opcode 0x46 */
- IncWordReg(SI);
- }
- static INLINE2 void i_inc_di(void)
- {
- /* Opcode 0x47 */
- IncWordReg(DI);
- }
- static INLINE2 void i_dec_ax(void)
- {
- /* Opcode 0x48 */
- DecWordReg(AX);
- }
- static INLINE2 void i_dec_cx(void)
- {
- /* Opcode 0x49 */
- DecWordReg(CX);
- }
- static INLINE2 void i_dec_dx(void)
- {
- /* Opcode 0x4a */
- DecWordReg(DX);
- }
- static INLINE2 void i_dec_bx(void)
- {
- /* Opcode 0x4b */
- DecWordReg(BX);
- }
- static INLINE2 void i_dec_sp(void)
- {
- /* Opcode 0x4c */
- DecWordReg(SP);
- }
- static INLINE2 void i_dec_bp(void)
- {
- /* Opcode 0x4d */
- DecWordReg(BP);
- }
- static INLINE2 void i_dec_si(void)
- {
- /* Opcode 0x4e */
- DecWordReg(SI);
- }
- static INLINE2 void i_dec_di(void)
- {
- /* Opcode 0x4f */
- DecWordReg(DI);
- }
- static INLINE2 void i_push_ax(void)
- {
- /* Opcode 0x50 */
- PushWordReg(AX);
- }
- static INLINE2 void i_push_cx(void)
- {
- /* Opcode 0x51 */
- PushWordReg(CX);
- }
- static INLINE2 void i_push_dx(void)
- {
- /* Opcode 0x52 */
- PushWordReg(DX);
- }
- static INLINE2 void i_push_bx(void)
- {
- /* Opcode 0x53 */
- PushWordReg(BX);
- }
- static INLINE2 void i_push_sp(void)
- {
- /* Opcode 0x54 */
- PushWordReg(SP);
- }
- static INLINE2 void i_push_bp(void)
- {
- /* Opcode 0x55 */
- PushWordReg(BP);
- }
- static INLINE2 void i_push_si(void)
- {
- /* Opcode 0x56 */
- PushWordReg(SI);
- }
- static INLINE2 void i_push_di(void)
- {
- /* Opcode 0x57 */
- PushWordReg(DI);
- }
- static INLINE2 void i_pop_ax(void)
- {
- /* Opcode 0x58 */
- PopWordReg(AX);
- }
- static INLINE2 void i_pop_cx(void)
- {
- /* Opcode 0x59 */
- PopWordReg(CX);
- }
- static INLINE2 void i_pop_dx(void)
- {
- /* Opcode 0x5a */
- PopWordReg(DX);
- }
- static INLINE2 void i_pop_bx(void)
- {
- /* Opcode 0x5b */
- PopWordReg(BX);
- }
- static INLINE2 void i_pop_sp(void)
- {
- /* Opcode 0x5c */
- PopWordReg(SP);
- }
- static INLINE2 void i_pop_bp(void)
- {
- /* Opcode 0x5d */
- PopWordReg(BP);
- }
- static INLINE2 void i_pop_si(void)
- {
- /* Opcode 0x5e */
- PopWordReg(SI);
- }
- static INLINE2 void i_pop_di(void)
- {
- /* Opcode 0x5f */
- PopWordReg(DI);
- }
- /* Conditional jumps from 0x70 to 0x7f */
- JumpCond(o, OF) /* 0x70 = Jump if overflow */
- JumpCond(no, !OF) /* 0x71 = Jump if no overflow */
- JumpCond(b, CF) /* 0x72 = Jump if below */
- JumpCond(nb, !CF) /* 0x73 = Jump if not below */
- JumpCond(z, ZF) /* 0x74 = Jump if zero */
- JumpCond(nz, !ZF) /* 0x75 = Jump if not zero */
- JumpCond(be, CF || ZF) /* 0x76 = Jump if below or equal */
- JumpCond(nbe, !(CF || ZF)) /* 0x77 = Jump if not below or equal */
- JumpCond(s, SF) /* 0x78 = Jump if sign */
- JumpCond(ns, !SF) /* 0x79 = Jump if no sign */
- JumpCond(p, PF) /* 0x7a = Jump if parity */
- JumpCond(np, !PF) /* 0x7b = Jump if no parity */
- JumpCond(l,(!(!SF)!=!(!OF))&&!ZF) /* 0x7c = Jump if less */
- JumpCond(nl, ZF||(!(!SF) == !(!OF))) /* 0x7d = Jump if not less */
- JumpCond(le, ZF||(!(!SF) != !(!OF))) /* 0x7e = Jump if less than or equal */
- JumpCond(nle,(!(!SF)==!(!OF))&&!ZF) /* 0x7f = Jump if not less than or equal*/
- static INLINE2 void i_80pre(void)
- {
- /* Opcode 0x80 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- BYTE *dest = GetModRMRMB(ModRM);
- register unsigned src = GetMemInc(c_cs,ip);
- register unsigned tmp = *dest;
- register unsigned tmp2;
-
-
- switch (ModRM & 0x38)
- {
- case 0x00: /* ADD eb,d8 */
- tmp2 = src + tmp;
-
- SetCFB_Add(tmp2,tmp);
- SetOFB_Add(tmp2,src,tmp);
- SetAF(tmp2,src,tmp);
- SetZFB(tmp2);
- SetSFB(tmp2);
- SetPF(tmp2);
-
- *dest = (BYTE)tmp2;
- break;
- case 0x08: /* OR eb,d8 */
- tmp |= src;
-
- CF = OF = AF = 0;
-
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
-
- *dest = (BYTE)tmp;
- break;
- case 0x10: /* ADC eb,d8 */
- src += CF;
- tmp2 = src + tmp;
-
- CF = tmp2 >> 8;
- /* SetCFB_Add(tmp2,tmp); */
- SetOFB_Add(tmp2,src,tmp);
- SetAF(tmp2,src,tmp);
- SetZFB(tmp2);
- SetSFB(tmp2);
- SetPF(tmp2);
-
- *dest = (BYTE)tmp2;
- break;
- case 0x18: /* SBB eb,b8 */
- src += CF;
- tmp2 = tmp;
- tmp -= src;
-
- CF = (tmp & 0x100) == 0x100;
- /* SetCFB_Sub(tmp,tmp2); */
- SetOFB_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
-
- *dest = (BYTE)tmp;
- break;
- case 0x20: /* AND eb,d8 */
- tmp &= src;
-
- CF = OF = AF = 0;
-
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
-
- *dest = (BYTE)tmp;
- break;
- case 0x28: /* SUB eb,d8 */
- tmp2 = tmp;
- tmp -= src;
-
- SetCFB_Sub(tmp,tmp2);
- SetOFB_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
-
- *dest = (BYTE)tmp;
- break;
- case 0x30: /* XOR eb,d8 */
- tmp ^= src;
-
- CF = OF = AF = 0;
-
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
-
- *dest = (BYTE)tmp;
- break;
- case 0x38: /* CMP eb,d8 */
- tmp2 = tmp;
- tmp -= src;
-
- SetCFB_Sub(tmp,tmp2);
- SetOFB_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
-
- break;
- }
- }
- static INLINE2 void i_81pre(void)
- {
- /* Opcode 0x81 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- WORD *dest = GetModRMRMW(ModRM);
- register unsigned src = GetMemInc(c_cs,ip);
- register unsigned tmp = ReadWord(dest);
- register unsigned tmp2;
- src += GetMemInc(c_cs,ip) << 8;
- switch (ModRM & 0x38)
- {
- case 0x00: /* ADD ew,d16 */
- tmp2 = src + tmp;
-
- SetCFW_Add(tmp2,tmp);
- SetOFW_Add(tmp2,src,tmp);
- SetAF(tmp2,src,tmp);
- SetZFW(tmp2);
- SetSFW(tmp2);
- SetPF(tmp2);
-
- WriteWord(dest,tmp2);
- break;
- case 0x08: /* OR ew,d16 */
- tmp |= src;
-
- CF = OF = AF = 0;
-
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- WriteWord(dest,tmp);
- break;
- case 0x10: /* ADC ew,d16 */
- src += CF;
- tmp2 = src + tmp;
-
- CF = tmp2 >> 16;
- /* SetCFW_Add(tmp2,tmp); */
- SetOFW_Add(tmp2,src,tmp);
- SetAF(tmp2,src,tmp);
- SetZFW(tmp2);
- SetSFW(tmp2);
- SetPF(tmp2);
-
- WriteWord(dest,tmp2);
- break;
- case 0x18: /* SBB ew,d16 */
- src += CF;
- tmp2 = tmp;
- tmp -= src;
-
- CF = (tmp & 0x10000) == 0x10000;
- /* SetCFW_Sub(tmp,tmp2); */
- SetOFW_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- WriteWord(dest,tmp);
- break;
- case 0x20: /* AND ew,d16 */
- tmp &= src;
-
- CF = OF = AF = 0;
-
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- WriteWord(dest,tmp);
- break;
- case 0x28: /* SUB ew,d16 */
- tmp2 = tmp;
- tmp -= src;
-
- SetCFW_Sub(tmp,tmp2);
- SetOFW_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- WriteWord(dest,tmp);
- break;
- case 0x30: /* XOR ew,d16 */
- tmp ^= src;
-
- CF = OF = AF = 0;
-
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- WriteWord(dest,tmp);
- break;
- case 0x38: /* CMP ew,d16 */
- tmp2 = tmp;
- tmp -= src;
-
- SetCFW_Sub(tmp,tmp2);
- SetOFW_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- break;
- }
- }
- static INLINE2 void i_83pre(void)
- {
- /* Opcode 0x83 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- WORD *dest = GetModRMRMW(ModRM);
- register unsigned src = (WORD)((INT16)((INT8)GetMemInc(c_cs,ip)));
- register unsigned tmp = ReadWord(dest);
- register unsigned tmp2;
-
- switch (ModRM & 0x38)
- {
- case 0x00: /* ADD ew,d8 */
- tmp2 = src + tmp;
-
- SetCFW_Add(tmp2,tmp);
- SetOFW_Add(tmp2,src,tmp);
- SetAF(tmp2,src,tmp);
- SetZFW(tmp2);
- SetSFW(tmp2);
- SetPF(tmp2);
-
- WriteWord(dest,tmp2);
- break;
- case 0x08: /* OR ew,d8 */
- tmp |= src;
-
- CF = OF = AF = 0;
-
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- WriteWord(dest,tmp);
- break;
- case 0x10: /* ADC ew,d8 */
- src += CF;
- tmp2 = src + tmp;
-
- CF = tmp2 >> 16;
- /* SetCFW_Add(tmp2,tmp); */
- SetOFW_Add(tmp2,src,tmp);
- SetAF(tmp2,src,tmp);
- SetZFW(tmp2);
- SetSFW(tmp2);
- SetPF(tmp2);
-
- WriteWord(dest,tmp2);
- break;
- case 0x18: /* SBB ew,d8 */
- src += CF;
- tmp2 = tmp;
- tmp -= src;
-
- CF = (tmp & 0x10000) == 0x10000;
- /* SetCFW_Sub(tmp,tmp2); */
- SetOFW_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- WriteWord(dest,tmp);
- break;
- case 0x20: /* AND ew,d8 */
- tmp &= src;
-
- CF = OF = AF = 0;
-
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- WriteWord(dest,tmp);
- break;
- case 0x28: /* SUB ew,d8 */
- tmp2 = tmp;
- tmp -= src;
-
- SetCFW_Sub(tmp,tmp2);
- SetOFW_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- WriteWord(dest,tmp);
- break;
- case 0x30: /* XOR ew,d8 */
- tmp ^= src;
-
- CF = OF = AF = 0;
-
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- WriteWord(dest,tmp);
- break;
-
- case 0x38: /* CMP ew,d8 */
- tmp2 = tmp;
- tmp -= src;
-
- SetCFW_Sub(tmp,tmp2);
- SetOFW_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- break;
- }
- }
- static INLINE2 void i_test_br8(void)
- {
- /* Opcode 0x84 */
- unsigned ModRM = (unsigned)GetMemInc(c_cs,ip);
- register unsigned src = (unsigned)*GetModRMRegB(ModRM);
- BYTE *dest = GetModRMRMB(ModRM);
- register unsigned tmp = (unsigned) *dest;
- tmp &= src;
- CF = OF = AF = 0;
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
- }
- static INLINE2 void i_test_wr16(void)
- {
- /* Opcode 0x85 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- WORD *src = GetModRMRegW(ModRM);
- WORD *dest = GetModRMRMW(ModRM);
- register unsigned tmp1 = (unsigned)ReadWord(src);
- register unsigned tmp2 = (unsigned)ReadWord(dest);
- register unsigned tmp3 = tmp1 & tmp2;
- CF = OF = AF = 0;
- SetZFW(tmp3);
- SetSFW(tmp3);
- SetPF(tmp3);
- }
- static INLINE2 void i_xchg_br8(void)
- {
- /* Opcode 0x86 */
- unsigned ModRM = (unsigned)GetMemInc(c_cs,ip);
- register BYTE *src = GetModRMRegB(ModRM);
- register BYTE *dest = GetModRMRMB(ModRM);
- BYTE tmp;
- tmp = *src;
- *src = *dest;
- *dest = tmp;
- }
- static INLINE2 void i_xchg_wr16(void)
- {
- /* Opcode 0x87 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- register BYTE *src = (BYTE *)GetModRMRegW(ModRM);
- register BYTE *dest = (BYTE *)GetModRMRMW(ModRM);
- BYTE tmp1,tmp2;
- tmp1 = src[0];
- tmp2 = src[1];
- src[0] = dest[0];
- src[1] = dest[1];
- dest[0] = tmp1;
- dest[1] = tmp2;
- }
- static INLINE2 void i_mov_br8(void)
- {
- /* Opcode 0x88 */
- register unsigned ModRM = GetMemInc(c_cs,ip);
- register BYTE src = *GetModRMRegB(ModRM);
- register BYTE *dest = GetModRMRMB(ModRM);
- *dest = src;
- }
- static INLINE2 void i_mov_wr16(void)
- {
- /* Opcode 0x89 */
- register unsigned ModRM = GetMemInc(c_cs,ip);
- register WORD *src = GetModRMRegW(ModRM);
- register WORD *dest = GetModRMRMW(ModRM);
- CopyWord(dest,src);
- }
- static INLINE2 void i_mov_r8b(void)
- {
- /* Opcode 0x8a */
- register unsigned ModRM = GetMemInc(c_cs,ip);
- register BYTE *dest = GetModRMRegB(ModRM);
- register BYTE src = *GetModRMRMB(ModRM);
- *dest = src;
- }
- static INLINE2 void i_mov_r16w(void)
- {
- /* Opcode 0x8b */
- register unsigned ModRM = GetMemInc(c_cs,ip);
- register WORD *dest = GetModRMRegW(ModRM);
- register WORD *src = GetModRMRMW(ModRM);
- CopyWord(dest,src);
- }
- static INLINE2 void i_mov_wsreg(void)
- {
- /* Opcode 0x8c */
- register unsigned ModRM = GetMemInc(c_cs,ip);
- register WORD *dest = GetModRMRMW(ModRM);
- WriteWord(dest,sregs[(ModRM & 0x38) >> 3]);
- }
- static INLINE2 void i_lea(void)
- {
- /* Opcode 0x8d */
- register unsigned ModRM = GetMemInc(c_cs,ip);
- register unsigned src = 0;
- register WORD *dest = GetModRMRegW(ModRM);
- if (ModRMRM[ModRM].offset)
- {
- src = (WORD)((INT16)((INT8)GetMemInc(c_cs,ip)));
- if (ModRMRM[ModRM].offset16)
- src = (GetMemInc(c_cs,ip) << 8) + (BYTE)(src);
- }
- src += ReadWord(ModRMRM[ModRM].reg1)+ReadWord(ModRMRM[ModRM].reg2);
- WriteWord(dest,src);
- }
- static INLINE2 void i_mov_sregw(void)
- {
- /* Opcode 0x8e */
-
- static int multiple = 0;
- register unsigned ModRM = GetMemInc(c_cs,ip);
- register WORD *src = GetModRMRMW(ModRM);
-
- switch (ModRM & 0x38)
- {
- case 0x00: /* mov es,... */
- sregs[ES] = ReadWord(src);
- c_es = SegToMemPtr(ES);
- break;
- case 0x18: /* mov ds,... */
- sregs[DS] = ReadWord(src);
- c_ds = SegToMemPtr(DS);
- break;
- case 0x10: /* mov ss,... */
- sregs[SS] = ReadWord(src);
- c_stack = c_ss = SegToMemPtr(SS);
-
- if (multiple == 0) /* Prevent unlimited recursion.. */
- {
- multiple = 1;
- /*
- #ifdef DEBUGGER
- call_debugger(D_TRACE);
- #endif
- */
- instruction[GetMemInc(c_cs,ip)]();
- multiple = 0;
- }
-
- break;
- case 0x08: /* mov cs,... (hangs 486, but we'll let it through) */
- break;
-
- }
- }
- static INLINE2 void i_popw(void)
- {
- /* Opcode 0x8f */
-
- unsigned ModRM = GetMemInc(c_cs,ip);
- register WORD *dest = GetModRMRMW(ModRM);
- register unsigned tmp = ReadWord(&wregs[SP]);
- WORD tmp2 = GetMemW(c_stack,tmp);
- tmp += 2;
- WriteWord(&wregs[SP],tmp);
- WriteWord(dest,tmp2);
- }
- static INLINE2 void i_nop(void)
- {
- /* Opcode 0x90 */
- }
- static INLINE2 void i_xchg_axcx(void)
- {
- /* Opcode 0x91 */
- XchgAXReg(CX);
- }
- static INLINE2 void i_xchg_axdx(void)
- {
- /* Opcode 0x92 */
- XchgAXReg(DX);
- }
- static INLINE2 void i_xchg_axbx(void)
- {
- /* Opcode 0x93 */
- XchgAXReg(BX);
- }
- static INLINE2 void i_xchg_axsp(void)
- {
- /* Opcode 0x94 */
- XchgAXReg(SP);
- }
- static INLINE2 void i_xchg_axbp(void)
- {
- /* Opcode 0x95 */
- XchgAXReg(BP);
- }
- static INLINE2 void i_xchg_axsi(void)
- {
- /* Opcode 0x96 */
- XchgAXReg(SI);
- }
- static INLINE2 void i_xchg_axdi(void)
- {
- /* Opcode 0x97 */
- XchgAXReg(DI);
- }
- static INLINE2 void i_cbw(void)
- {
- /* Opcode 0x98 */
- *bregs[AH] = (*bregs[AL] & 0x80) ? 0xff : 0;
- }
-
- static INLINE2 void i_cwd(void)
- {
- /* Opcode 0x99 */
- wregs[DX] = (*bregs[AH] & 0x80) ? ChangeE(0xffff) : ChangeE(0);
- }
- static INLINE2 void i_call_far(void)
- {
- register unsigned tmp, tmp1, tmp2;
- tmp = GetMemInc(c_cs,ip);
- tmp += GetMemInc(c_cs,ip) << 8;
- tmp2 = GetMemInc(c_cs,ip);
- tmp2 += GetMemInc(c_cs,ip) << 8;
- tmp1 = (WORD)(ReadWord(&wregs[SP])-2);
- PutMemW(c_stack,tmp1,sregs[CS]);
- tmp1 = (WORD)(tmp1-2);
- PutMemW(c_stack,tmp1,ip);
- WriteWord(&wregs[SP],tmp1);
- ip = (WORD)tmp;
- sregs[CS] = (WORD)tmp2;
- c_cs = SegToMemPtr(CS);
- }
- static INLINE2 void i_wait(void)
- {
- /* Opcode 0x9b */
-
- return;
- }
- static INLINE2 void i_pushf(void)
- {
- /* Opcode 0x9c */
- register unsigned tmp1 = (ReadWord(&wregs[SP])-2);
- WORD tmp2 = CompressFlags() | 0xf000;
- PutMemW(c_stack,tmp1,tmp2);
- WriteWord(&wregs[SP],tmp1);
- }
- static INLINE2 void i_popf(void)
- {
- /* Opcode 0x9d */
- register unsigned tmp = ReadWord(&wregs[SP]);
- unsigned tmp2 = (unsigned)GetMemW(c_stack,tmp);
- ExpandFlags(tmp2);
- tmp += 2;
- WriteWord(&wregs[SP],tmp);
-
- if (IF && int_blocked)
- {
- int_pending = int_blocked;
- int_blocked = 0;
- D2(printf("Unblocking interrupt\n"););
- }
- if (TF) trap();
- }
- static INLINE2 void i_sahf(void)
- {
- /* Opcode 0x9e */
- unsigned tmp = (CompressFlags() & 0xff00) | (*bregs[AH] & 0xd5);
- ExpandFlags(tmp);
- }
- static INLINE2 void i_lahf(void)
- {
- /* Opcode 0x9f */
- *bregs[AH] = CompressFlags() & 0xff;
- }
- static INLINE2 void i_mov_aldisp(void)
- {
- /* Opcode 0xa0 */
- register unsigned addr;
- addr = GetMemInc(c_cs,ip);
- addr += GetMemInc(c_cs, ip) << 8;
- *bregs[AL] = GetMemB(c_ds, addr);
- }
- static INLINE2 void i_mov_axdisp(void)
- {
- /* Opcode 0xa1 */
- register unsigned addr;
- addr = GetMemInc(c_cs, ip);
- addr += GetMemInc(c_cs, ip) << 8;
- *bregs[AL] = GetMemB(c_ds, addr);
- *bregs[AH] = GetMemB(c_ds, addr+1);
- }
- static INLINE2 void i_mov_dispal(void)
- {
- /* Opcode 0xa2 */
- register unsigned addr;
- addr = GetMemInc(c_cs,ip);
- addr += GetMemInc(c_cs, ip) << 8;
- PutMemB(c_ds, addr, *bregs[AL]);
- }
- static INLINE2 void i_mov_dispax(void)
- {
- /* Opcode 0xa3 */
- register unsigned addr;
- addr = GetMemInc(c_cs, ip);
- addr += GetMemInc(c_cs, ip) << 8;
- PutMemB(c_ds, addr, *bregs[AL]);
- PutMemB(c_ds, addr+1, *bregs[AH]);
- }
- static INLINE2 void i_movsb(void)
- {
- /* Opcode 0xa4 */
- register unsigned di = ReadWord(&wregs[DI]);
- register unsigned si = ReadWord(&wregs[SI]);
- BYTE tmp = GetMemB(c_ds,si);
- PutMemB(c_es,di, tmp);
- di += -2*DF +1;
- si += -2*DF +1;
- WriteWord(&wregs[DI],di);
- WriteWord(&wregs[SI],si);
- }
- static INLINE2 void i_movsw(void)
- {
- /* Opcode 0xa5 */
- register unsigned di = ReadWord(&wregs[DI]);
- register unsigned si = ReadWord(&wregs[SI]);
-
- WORD tmp = GetMemW(c_ds,si);
- PutMemW(c_es,di, tmp);
- di += -4*DF +2;
- si += -4*DF +2;
- WriteWord(&wregs[DI],di);
- WriteWord(&wregs[SI],si);
- }
- static INLINE2 void i_cmpsb(void)
- {
- /* Opcode 0xa6 */
- unsigned di = ReadWord(&wregs[DI]);
- unsigned si = ReadWord(&wregs[SI]);
- unsigned src = GetMemB(c_es, di);
- unsigned tmp = GetMemB(c_ds, si);
- unsigned tmp2 = tmp;
-
- tmp -= src;
- SetCFB_Sub(tmp,tmp2);
- SetOFB_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
- di += -2*DF +1;
- si += -2*DF +1;
- WriteWord(&wregs[DI],di);
- WriteWord(&wregs[SI],si);
- }
- static INLINE2 void i_cmpsw(void)
- {
- /* Opcode 0xa7 */
- unsigned di = ReadWord(&wregs[DI]);
- unsigned si = ReadWord(&wregs[SI]);
- unsigned src = GetMemW(c_es, di);
- unsigned tmp = GetMemW(c_ds, si);
- unsigned tmp2 = tmp;
-
- tmp -= src;
- SetCFW_Sub(tmp,tmp2);
- SetOFW_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
- di += -4*DF +2;
- si += -4*DF +2;
- WriteWord(&wregs[DI],di);
- WriteWord(&wregs[SI],si);
- }
- static INLINE2 void i_test_ald8(void)
- {
- /* Opcode 0xa8 */
- register unsigned tmp1 = (unsigned)*bregs[AL];
- register unsigned tmp2 = (unsigned) GetMemInc(c_cs,ip);
- tmp1 &= tmp2;
- CF = OF = AF = 0;
- SetZFB(tmp1);
- SetSFB(tmp1);
- SetPF(tmp1);
- }
- static INLINE2 void i_test_axd16(void)
- {
- /* Opcode 0xa9 */
- register unsigned tmp1 = (unsigned)ReadWord(&wregs[AX]);
- register unsigned tmp2;
-
- tmp2 = (unsigned) GetMemInc(c_cs,ip);
- tmp2 += GetMemInc(c_cs,ip) << 8;
- tmp1 &= tmp2;
- CF = OF = AF = 0;
- SetZFW(tmp1);
- SetSFW(tmp1);
- SetPF(tmp1);
- }
- static INLINE2 void i_stosb(void)
- {
- /* Opcode 0xaa */
- register unsigned di = ReadWord(&wregs[DI]);
- PutMemB(c_es,di,*bregs[AL]);
- di += -2*DF +1;
- WriteWord(&wregs[DI],di);
- }
- static INLINE2 void i_stosw(void)
- {
- /* Opcode 0xab */
- register unsigned di = ReadWord(&wregs[DI]);
- PutMemB(c_es,di,*bregs[AL]);
- PutMemB(c_es,di+1,*bregs[AH]);
- di += -4*DF +2;;
- WriteWord(&wregs[DI],di);
- }
- static INLINE2 void i_lodsb(void)
- {
- /* Opcode 0xac */
- register unsigned si = ReadWord(&wregs[SI]);
- *bregs[AL] = GetMemB(c_ds,si);
- si += -2*DF +1;
- WriteWord(&wregs[SI],si);
- }
- static INLINE2 void i_lodsw(void)
- {
- /* Opcode 0xad */
- register unsigned si = ReadWord(&wregs[SI]);
- register unsigned tmp = GetMemW(c_ds,si);
- si += -4*DF+2;
- WriteWord(&wregs[SI],si);
- WriteWord(&wregs[AX],tmp);
- }
-
- static INLINE2 void i_scasb(void)
- {
- /* Opcode 0xae */
- unsigned di = ReadWord(&wregs[DI]);
- unsigned src = GetMemB(c_es, di);
- unsigned tmp = *bregs[AL];
- unsigned tmp2 = tmp;
-
- tmp -= src;
- SetCFB_Sub(tmp,tmp2);
- SetOFB_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
- di += -2*DF +1;
- WriteWord(&wregs[DI],di);
- }
- static INLINE2 void i_scasw(void)
- {
- /* Opcode 0xaf */
- unsigned di = ReadWord(&wregs[DI]);
- unsigned src = GetMemW(c_es, di);
- unsigned tmp = ReadWord(&wregs[AX]);
- unsigned tmp2 = tmp;
-
- tmp -= src;
- SetCFW_Sub(tmp,tmp2);
- SetOFW_Sub(tmp,src,tmp2);
- SetAF(tmp,src,tmp2);
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
- di += -4*DF +2;
- WriteWord(&wregs[DI],di);
- }
- static INLINE2 void i_mov_ald8(void)
- {
- /* Opcode 0xb0 */
- *bregs[AL] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_cld8(void)
- {
- /* Opcode 0xb1 */
- *bregs[CL] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_dld8(void)
- {
- /* Opcode 0xb2 */
- *bregs[DL] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_bld8(void)
- {
- /* Opcode 0xb3 */
- *bregs[BL] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_ahd8(void)
- {
- /* Opcode 0xb4 */
- *bregs[AH] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_chd8(void)
- {
- /* Opcode 0xb5 */
- *bregs[CH] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_dhd8(void)
- {
- /* Opcode 0xb6 */
- *bregs[DH] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_bhd8(void)
- {
- /* Opcode 0xb7 */
- *bregs[BH] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_axd16(void)
- {
- /* Opcode 0xb8 */
- *bregs[AL] = GetMemInc(c_cs,ip);
- *bregs[AH] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_cxd16(void)
- {
- /* Opcode 0xb9 */
- *bregs[CL] = GetMemInc(c_cs,ip);
- *bregs[CH] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_dxd16(void)
- {
- /* Opcode 0xba */
- *bregs[DL] = GetMemInc(c_cs,ip);
- *bregs[DH] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_bxd16(void)
- {
- /* Opcode 0xbb */
- *bregs[BL] = GetMemInc(c_cs,ip);
- *bregs[BH] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_spd16(void)
- {
- /* Opcode 0xbc */
- *bregs[SPL] = GetMemInc(c_cs,ip);
- *bregs[SPH] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_bpd16(void)
- {
- /* Opcode 0xbd */
- *bregs[BPL] = GetMemInc(c_cs,ip);
- *bregs[BPH] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_sid16(void)
- {
- /* Opcode 0xbe */
- *bregs[SIL] = GetMemInc(c_cs,ip);
- *bregs[SIH] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_did16(void)
- {
- /* Opcode 0xbf */
- *bregs[DIL] = GetMemInc(c_cs,ip);
- *bregs[DIH] = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_ret_d16(void)
- {
- /* Opcode 0xc2 */
- register unsigned tmp = ReadWord(&wregs[SP]);
- register unsigned count;
- count = GetMemInc(c_cs,ip);
- count += GetMemInc(c_cs,ip) << 8;
- ip = GetMemW(c_stack,tmp);
- tmp += count+2;
- WriteWord(&wregs[SP],tmp);
- }
- static INLINE2 void i_ret(void)
- {
- /* Opcode 0xc3 */
- register unsigned tmp = ReadWord(&wregs[SP]);
- ip = GetMemW(c_stack,tmp);
- tmp += 2;
- WriteWord(&wregs[SP],tmp);
- }
- static INLINE2 void i_les_dw(void)
- {
- /* Opcode 0xc4 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- register WORD *dest = GetModRMRegW(ModRM);
- register WORD *src = GetModRMRMW(ModRM);
- WORD tmp = ReadWord(src);
- WriteWord(dest, tmp);
- src += 1;
- sregs[ES] = ReadWord(src);
- c_es = SegToMemPtr(ES);
- }
- static INLINE2 void i_lds_dw(void)
- {
- /* Opcode 0xc5 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- register WORD *dest = GetModRMRegW(ModRM);
- register WORD *src = GetModRMRMW(ModRM);
- WORD tmp = ReadWord(src);
- WriteWord(dest,tmp);
- src += 1;
- sregs[DS] = ReadWord(src);
- c_ds = SegToMemPtr(DS);
- }
- static INLINE2 void i_mov_bd8(void)
- {
- /* Opcode 0xc6 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- register BYTE *dest = GetModRMRMB(ModRM);
- *dest = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_mov_wd16(void)
- {
- /* Opcode 0xc7 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- register BYTE *dest = (BYTE *)GetModRMRMW(ModRM);
- *dest++ = GetMemInc(c_cs,ip);
- *dest = GetMemInc(c_cs,ip);
- }
- static INLINE2 void i_retf_d16(void)
- {
- /* Opcode 0xca */
- register unsigned tmp = ReadWord(&wregs[SP]);
- register unsigned count;
- count = GetMemInc(c_cs,ip);
- count += GetMemInc(c_cs,ip) << 8;
- ip = GetMemW(c_stack,tmp);
- tmp = (WORD)(tmp+2);
- sregs[CS] = GetMemW(c_stack,tmp);
- c_cs = SegToMemPtr(CS);
- tmp += count+2;
- WriteWord(&wregs[SP],tmp);
- }
- static INLINE2 void i_retf(void)
- {
- /* Opcode 0xcb */
- register unsigned tmp = ReadWord(&wregs[SP]);
- ip = GetMemW(c_stack,tmp);
- tmp = (WORD)(tmp+2);
- sregs[CS] = GetMemW(c_stack,tmp);
- c_cs = SegToMemPtr(CS);
- tmp += 2;
- WriteWord(&wregs[SP],tmp);
- }
- static INLINE2 void i_int3(void)
- {
- /* Opcode 0xcc */
- interrupt(3);
- }
- static INLINE2 void i_int(void)
- {
- /* Opcode 0xcd */
- unsigned int_num = GetMemInc(c_cs,ip);
- interrupt(int_num);
- }
- static INLINE2 void i_into(void)
- {
- /* Opcode 0xce */
- if (OF)
- interrupt(4);
- }
- static INLINE2 void i_iret(void)
- {
- /* Opcode 0xcf */
- register unsigned tmp = ReadWord(&wregs[SP]);
- ip = GetMemW(c_stack,tmp);
- tmp = (WORD)(tmp+2);
- sregs[CS] = GetMemW(c_stack,tmp);
- c_cs = SegToMemPtr(CS);
- tmp += 2;
- WriteWord(&wregs[SP],tmp);
- i_popf();
- #ifdef DEBUGGER
- call_debugger(D_TRACE);
- #endif
- }
- static INLINE2 void i_d0pre(void)
- {
- /* Opcode 0xd0 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- register BYTE *dest = GetModRMRMB(ModRM);
- register unsigned tmp = *dest;
- register unsigned tmp2 = tmp;
- switch (ModRM & 0x38)
- {
- case 0x00: /* ROL eb,1 */
- CF = (tmp & 0x80) != 0;
- *dest = (tmp << 1) + CF;
- OF = !(!(tmp & 0x40)) != CF;
- break;
- case 0x08: /* ROR eb,1 */
- CF = (tmp & 0x01) != 0;
- *dest = (tmp >> 1) + (CF << 7);
- OF = !(!(tmp & 0x80)) != CF;
- break;
- case 0x10: /* RCL eb,1 */
- OF = (tmp ^ (tmp << 1)) & 0x80;
- *dest = (tmp << 1) + CF;
- CF = (tmp & 0x80) != 0;
- break;
- case 0x18: /* RCR eb,1 */
- *dest = (tmp >> 1) + (CF << 7);
- OF = !(!(tmp & 0x80)) != CF;
- CF = (tmp & 0x01) != 0;
- break;
- case 0x20: /* SHL eb,1 */
- case 0x30:
- tmp += tmp;
-
- SetCFB_Add(tmp,tmp2);
- SetOFB_Add(tmp,tmp2,tmp2);
- AF = 1;
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
-
- *dest = (BYTE)tmp;
- break;
- case 0x28: /* SHR eb,1 */
- CF = (tmp & 0x01) != 0;
- OF = tmp & 0x80;
-
- tmp2 = tmp >> 1;
-
- SetSFB(tmp2);
- SetPF(tmp2);
- SetZFB(tmp2);
- AF = 1;
- *dest = (BYTE)tmp2;
- break;
- case 0x38: /* SAR eb,1 */
- CF = (tmp & 0x01) != 0;
- OF = 0;
-
- tmp2 = (tmp >> 1) | (tmp & 0x80);
-
- SetSFB(tmp2);
- SetPF(tmp2);
- SetZFB(tmp2);
- AF = 1;
- *dest = (BYTE)tmp2;
- break;
- }
- }
- static INLINE2 void i_d1pre(void)
- {
- /* Opcode 0xd1 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- register WORD *dest = GetModRMRMW(ModRM);
- register unsigned tmp = ReadWord(dest);
- register unsigned tmp2 = tmp;
- switch (ModRM & 0x38)
- {
- case 0x00: /* ROL ew,1 */
- CF = (tmp & 0x8000) != 0;
- tmp2 = (tmp << 1) + CF;
- OF = !(!(tmp & 0x4000)) != CF;
- WriteWord(dest,tmp2);
- break;
- case 0x08: /* ROR ew,1 */
- CF = (tmp & 0x01) != 0;
- tmp2 = (tmp >> 1) + ((unsigned)CF << 15);
- OF = !(!(tmp & 0x8000)) != CF;
- WriteWord(dest,tmp2);
- break;
- case 0x10: /* RCL ew,1 */
- tmp2 = (tmp << 1) + CF;
- OF = (tmp ^ (tmp << 1)) & 0x8000;
- CF = (tmp & 0x8000) != 0;
- WriteWord(dest,tmp2);
- break;
- case 0x18: /* RCR ew,1 */
- tmp2 = (tmp >> 1) + ((unsigned)CF << 15);
- OF = !(!(tmp & 0x8000)) != CF;
- CF = (tmp & 0x01) != 0;
- WriteWord(dest,tmp2);
- break;
- case 0x20: /* SHL ew,1 */
- case 0x30:
- tmp += tmp;
-
- SetCFW_Add(tmp,tmp2);
- SetOFW_Add(tmp,tmp2,tmp2);
- AF = 1;
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- WriteWord(dest,tmp);
- break;
- case 0x28: /* SHR ew,1 */
- CF = (tmp & 0x01) != 0;
- OF = tmp & 0x8000;
-
- tmp2 = tmp >> 1;
-
- SetSFW(tmp2);
- SetPF(tmp2);
- SetZFW(tmp2);
- AF = 1;
- WriteWord(dest,tmp2);
- break;
- case 0x38: /* SAR ew,1 */
- CF = (tmp & 0x01) != 0;
- OF = 0;
-
- tmp2 = (tmp >> 1) | (tmp & 0x8000);
-
- SetSFW(tmp2);
- SetPF(tmp2);
- SetZFW(tmp2);
- AF = 1;
- WriteWord(dest,tmp2);
- break;
- }
- }
- static INLINE2 void i_d2pre(void)
- {
- /* Opcode 0xd2 */
- unsigned ModRM;
- register BYTE *dest;
- register unsigned tmp;
- register unsigned tmp2;
- unsigned count;
- if (*bregs[CL] == 1)
- {
- i_d0pre();
- D(printf("Skipping CL processing\n"););
- return;
- }
- ModRM = GetMemInc(c_cs,ip);
- dest = GetModRMRMB(ModRM);
- tmp = (unsigned)*dest;
- count = (unsigned)*bregs[CL];
- switch (ModRM & 0x38)
- {
- case 0x00: /* ROL eb,CL */
- for (; count > 0; count--)
- {
- CF = (tmp & 0x80) != 0;
- tmp = (tmp << 1) + CF;
- }
- *dest = (BYTE)tmp;
- break;
- case 0x08: /* ROR eb,CL */
- for (; count > 0; count--)
- {
- CF = (tmp & 0x01) != 0;
- tmp = (tmp >> 1) + (CF << 7);
- }
- *dest = (BYTE)tmp;
- break;
- case 0x10: /* RCL eb,CL */
- for (; count > 0; count--)
- {
- tmp2 = CF;
- CF = (tmp & 0x80) != 0;
- tmp = (tmp << 1) + tmp2;
- }
- *dest = (BYTE)tmp;
- break;
- case 0x18: /* RCR eb,CL */
- for (; count > 0; count--)
- {
- tmp2 = (tmp >> 1) + (CF << 7);
- CF = (tmp & 0x01) != 0;
- tmp = tmp2;
- }
- *dest = (BYTE)tmp;
- break;
- case 0x20:
- case 0x30: /* SHL eb,CL */
- if (count >= 9)
- {
- CF = 0; /* Not sure about this... */
- tmp = 0;
- }
- else
- {
- CF = ((tmp << (count-1)) & 0x80) != 0;
- tmp <<= count;
- }
-
- AF = 1;
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
-
- *dest = (BYTE)tmp;
- break;
- case 0x28: /* SHR eb,CL */
- if (count >= 9)
- {
- CF = 0; /* Not sure about this... */
- tmp = 0;
- }
- else
- {
- CF = ((tmp >> (count-1)) & 0x1) != 0;
- tmp >>= count;
- }
-
- SetSFB(tmp);
- SetPF(tmp);
- SetZFB(tmp);
- AF = 1;
- *dest = (BYTE)tmp;
- break;
- case 0x38: /* SAR eb,CL */
- tmp2 = tmp & 0x80;
- CF = (((INT8)tmp >> (count-1)) & 0x01) != 0;
- for (; count > 0; count--)
- tmp = (tmp >> 1) | tmp2;
-
- SetSFB(tmp);
- SetPF(tmp);
- SetZFB(tmp);
- AF = 1;
- *dest = (BYTE)tmp;
- break;
- }
- }
- static INLINE2 void i_d3pre(void)
- {
- /* Opcode 0xd3 */
- unsigned ModRM;
- register WORD *dest;
- register unsigned tmp;
- register unsigned tmp2;
- unsigned count;
- if (*bregs[CL] == 1)
- {
- i_d1pre();
- return;
- }
- ModRM = GetMemInc(c_cs,ip);
- dest = GetModRMRMW(ModRM);
- tmp = ReadWord(dest);
- count = (unsigned)*bregs[CL];
- switch (ModRM & 0x38)
- {
- case 0x00: /* ROL ew,CL */
- for (; count > 0; count--)
- {
- CF = (tmp & 0x8000) != 0;
- tmp = (tmp << 1) + CF;
- }
- WriteWord(dest,tmp);
- break;
- case 0x08: /* ROR ew,CL */
- for (; count > 0; count--)
- {
- CF = (tmp & 0x01) != 0;
- tmp = (tmp >> 1) + (CF << 15);
- }
- WriteWord(dest, tmp);
- break;
- case 0x10: /* RCL ew,CL */
- for (; count > 0; count--)
- {
- tmp2 = CF;
- CF = (tmp & 0x8000) != 0;
- tmp = (tmp << 1) + tmp2;
- }
- WriteWord(dest, tmp);
- break;
- case 0x18: /* RCR ew,CL */
- for (; count > 0; count--)
- {
- tmp2 = (tmp >> 1) + (CF << 15);
- CF = (tmp & 0x01) != 0;
- tmp = tmp2;
- }
- WriteWord(dest, tmp);
- break;
- case 0x20:
- case 0x30: /* SHL ew,CL */
- if (count >= 17)
- {
- CF = 0; /* Not sure about this... */
- tmp = 0;
- }
- else
- {
- CF = ((tmp << (count-1)) & 0x8000) != 0;
- tmp <<= count;
- }
-
- AF = 1;
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- WriteWord(dest, tmp);
- break;
- case 0x28: /* SHR ew,CL */
- if (count >= 17)
- {
- CF = 0; /* Not sure about this... */
- tmp = 0;
- }
- else
- {
- CF = ((tmp >> (count-1)) & 0x1) != 0;
- tmp >>= count;
- }
-
- SetSFW(tmp);
- SetPF(tmp);
- SetZFW(tmp);
- AF = 1;
- WriteWord(dest, tmp);
- break;
- case 0x38: /* SAR ew,CL */
- tmp2 = tmp & 0x8000;
- CF = (((INT16)tmp >> (count-1)) & 0x01) != 0;
- for (; count > 0; count--)
- tmp = (tmp >> 1) | tmp2;
-
- SetSFW(tmp);
- SetPF(tmp);
- SetZFW(tmp);
- AF = 1;
- WriteWord(dest, tmp);
- break;
- }
- }
- static INLINE2 void i_aam(void)
- {
- /* Opcode 0xd4 */
- unsigned mult = GetMemInc(c_cs,ip);
- if (mult == 0)
- interrupt(0);
- else
- {
- *bregs[AH] = *bregs[AL] / mult;
- *bregs[AL] %= mult;
- SetPF(*bregs[AL]);
- SetZFW(wregs[AX]);
- SetSFB(*bregs[AH]);
- }
- }
- static INLINE2 void i_aad(void)
- {
- /* Opcode 0xd5 */
- unsigned mult = GetMemInc(c_cs,ip);
- *bregs[AL] = *bregs[AH] * mult + *bregs[AL];
- *bregs[AH] = 0;
- SetPF(*bregs[AL]);
- SetZFB(*bregs[AL]);
- SF = 0;
- }
- static INLINE2 void i_xlat(void)
- {
- /* Opcode 0xd7 */
- unsigned dest = ReadWord(&wregs[BX])+*bregs[AL];
-
- *bregs[AL] = GetMemB(c_ds, dest);
- }
- static INLINE2 void i_escape(void)
- {
- /* Opcodes 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde and 0xdf */
- unsigned ModRM = GetMemInc(c_cs,ip);
- GetModRMRMB(ModRM);
- }
- static INLINE2 void i_loopne(void)
- {
- /* Opcode 0xe0 */
- register int disp = (int)((INT8)GetMemInc(c_cs,ip));
- register unsigned tmp = ReadWord(&wregs[CX])-1;
- WriteWord(&wregs[CX],tmp);
- if (!ZF && tmp) ip = (WORD)(ip+disp);
- }
- static INLINE2 void i_loope(void)
- {
- /* Opcode 0xe1 */
- register int disp = (int)((INT8)GetMemInc(c_cs,ip));
- register unsigned tmp = ReadWord(&wregs[CX])-1;
- WriteWord(&wregs[CX],tmp);
- if (ZF && tmp) ip = (WORD)(ip+disp);
- }
- static INLINE2 void i_loop(void)
- {
- /* Opcode 0xe2 */
- register int disp = (int)((INT8)GetMemInc(c_cs,ip));
- register unsigned tmp = ReadWord(&wregs[CX])-1;
- WriteWord(&wregs[CX],tmp);
- if (tmp) ip = (WORD)(ip+disp);
- }
- static INLINE2 void i_jcxz(void)
- {
- /* Opcode 0xe3 */
- register int disp = (int)((INT8)GetMemInc(c_cs,ip));
-
- if (wregs[CX] == 0)
- ip = (WORD)(ip+disp);
- }
- static INLINE2 void i_inal(void)
- {
- /* Opcode 0xe4 */
- unsigned port = GetMemInc(c_cs,ip);
- *bregs[AL] = read_port(port);
- }
- static INLINE2 void i_inax(void)
- {
- /* Opcode 0xe5 */
- unsigned port = GetMemInc(c_cs,ip);
- *bregs[AL] = read_port(port);
- *bregs[AH] = read_port(port+1);
- }
-
- static INLINE2 void i_outal(void)
- {
- /* Opcode 0xe6 */
- unsigned port = GetMemInc(c_cs,ip);
- write_port(port, *bregs[AL]);
- }
- static INLINE2 void i_outax(void)
- {
- /* Opcode 0xe7 */
- unsigned port = GetMemInc(c_cs,ip);
- write_port(port, *bregs[AL]);
- write_port(port+1, *bregs[AH]);
- }
- static INLINE2 void i_call_d16(void)
- {
- /* Opcode 0xe8 */
- register unsigned tmp;
- register unsigned tmp1 = (WORD)(ReadWord(&wregs[SP])-2);
- tmp = GetMemInc(c_cs,ip);
- tmp += GetMemInc(c_cs,ip) << 8;
- PutMemW(c_stack,tmp1,ip);
- WriteWord(&wregs[SP],tmp1);
- ip = (WORD)(ip+(INT16)tmp);
- }
- static INLINE2 void i_jmp_d16(void)
- {
- /* Opcode 0xe9 */
- register int tmp = GetMemInc(c_cs,ip);
- tmp += GetMemInc(c_cs,ip) << 8;
- ip = (WORD)(ip+(INT16)tmp);
- }
- static INLINE2 void i_jmp_far(void)
- {
- /* Opcode 0xea */
- register unsigned tmp,tmp1;
- tmp = GetMemInc(c_cs,ip);
- tmp += GetMemInc(c_cs,ip) << 8;
- tmp1 = GetMemInc(c_cs,ip);
- tmp1 += GetMemInc(c_cs,ip) << 8;
- sregs[CS] = (WORD)tmp1;
- c_cs = SegToMemPtr(CS);
- ip = (WORD)tmp;
- }
- static INLINE2 void i_jmp_d8(void)
- {
- /* Opcode 0xeb */
- register int tmp = (int)((INT8)GetMemInc(c_cs,ip));
- ip = (WORD)(ip+tmp);
- }
- static INLINE2 void i_inaldx(void)
- {
- /* Opcode 0xec */
- *bregs[AL] = read_port(ReadWord(&wregs[DX]));
- }
- static INLINE2 void i_inaxdx(void)
- {
- /* Opcode 0xed */
- unsigned port = ReadWord(&wregs[DX]);
- *bregs[AL] = read_port(port);
- *bregs[AH] = read_port(port+1);
- }
- static INLINE2 void i_outdxal(void)
- {
- /* Opcode 0xee */
- write_port(ReadWord(&wregs[DX]), *bregs[AL]);
- }
- static INLINE2 void i_outdxax(void)
- {
- /* Opcode 0xef */
- unsigned port = ReadWord(&wregs[DX]);
- write_port(port, *bregs[AL]);
- write_port(port+1, *bregs[AH]);
- }
- static INLINE2 void i_lock(void)
- {
- /* Opcode 0xf0 */
- }
- static INLINE2 void i_gobios(void)
- {
- /* Opcode 0xf1 */
- void (*routine)(void);
- unsigned dest;
-
- if (GetMemInc(c_cs,ip) != 0xf1)
- i_notdone();
- dest = GetMemInc(c_cs,ip); /* Must be re-coded sometime.... */
- dest += (GetMemInc(c_cs,ip) << 8);
- dest += (GetMemInc(c_cs,ip) << 16);
- dest += (GetMemInc(c_cs,ip) << 24);
- routine = (void (*)(void))dest;
- routine();
- }
- static void rep(int flagval)
- {
- /* Handles rep- and repnz- prefixes. flagval is the value of ZF for the
- loop to continue for CMPS and SCAS instructions. */
- unsigned next = GetMemInc(c_cs,ip);
- unsigned count = ReadWord(&wregs[CX]);
- switch(next)
- {
- case 0x26: /* ES: */
- c_ss = c_ds = c_es;
- rep(flagval);
- c_ds = SegToMemPtr(DS);
- c_ss = SegToMemPtr(SS);
- break;
- case 0x2e: /* CS: */
- c_ss = c_ds = c_cs;
- rep(flagval);
- c_ds = SegToMemPtr(DS);
- c_ss = SegToMemPtr(SS);
- break;
- case 0x36: /* SS: */
- c_ds = c_ss;
- rep(flagval);
- c_ds = SegToMemPtr(DS);
- break;
- case 0x3e: /* DS: */
- c_ss = c_ds;
- rep(flagval);
- c_ss = SegToMemPtr(SS);
- break;
- case 0xa4: /* REP MOVSB */
- for (; count > 0; count--)
- i_movsb();
- WriteWord(&wregs[CX],count);
- break;
- case 0xa5: /* REP MOVSW */
- for (; count > 0; count--)
- i_movsw();
- WriteWord(&wregs[CX],count);
- break;
- case 0xa6: /* REP(N)E CMPSB */
- for (ZF = flagval; (ZF == flagval) && (count > 0); count--)
- i_cmpsb();
- WriteWord(&wregs[CX],count);
- break;
- case 0xa7: /* REP(N)E CMPSW */
- for (ZF = flagval; (ZF == flagval) && (count > 0); count--)
- i_cmpsw();
- WriteWord(&wregs[CX],count);
- break;
- case 0xaa: /* REP STOSB */
- for (; count > 0; count--)
- i_stosb();
- WriteWord(&wregs[CX],count);
- break;
- case 0xab: /* REP LODSW */
- for (; count > 0; count--)
- i_stosw();
- WriteWord(&wregs[CX],count);
- break;
- case 0xac: /* REP LODSB */
- for (; count > 0; count--)
- i_lodsb();
- WriteWord(&wregs[CX],count);
- break;
- case 0xad: /* REP LODSW */
- for (; count > 0; count--)
- i_lodsw();
- WriteWord(&wregs[CX],count);
- break;
- case 0xae: /* REP(N)E SCASB */
- for (ZF = flagval; (ZF == flagval) && (count > 0); count--)
- i_scasb();
- WriteWord(&wregs[CX],count);
- break;
- case 0xaf: /* REP(N)E SCASW */
- for (ZF = flagval; (ZF == flagval) && (count > 0); count--)
- i_scasw();
- WriteWord(&wregs[CX],count);
- break;
- default:
- instruction[next]();
- }
- }
-
- static INLINE2 void i_repne(void)
- {
- /* Opcode 0xf2 */
- rep(0);
- }
- static INLINE2 void i_repe(void)
- {
- /* Opcode 0xf3 */
- rep(1);
- }
- static INLINE2 void i_cmc(void)
- {
- /* Opcode 0xf5 */
- CF = !CF;
- }
- static INLINE2 void i_f6pre(void)
- {
- /* Opcode 0xf6 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- register BYTE *byte = GetModRMRMB(ModRM);
- register unsigned tmp = (unsigned)*byte;
- register unsigned tmp2;
-
-
- switch (ModRM & 0x38)
- {
- case 0x00: /* TEST Eb, data8 */
- case 0x08: /* ??? */
- tmp &= GetMemInc(c_cs,ip);
-
- CF = OF = AF = 0;
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
- break;
-
- case 0x10: /* NOT Eb */
- *byte = ~tmp;
- break;
-
- case 0x18: /* NEG Eb */
- tmp2 = tmp;
- tmp = -tmp;
-
- CF = (int)tmp2 > 0;
-
- SetAF(tmp,0,tmp2);
- SetZFB(tmp);
- SetSFB(tmp);
- SetPF(tmp);
-
- *byte = tmp;
- break;
- case 0x20: /* MUL AL, Eb */
- {
- UINT16 result;
- tmp2 = *bregs[AL];
-
- SetSFB(tmp2);
- SetPF(tmp2);
-
- result = (UINT16)tmp2*tmp;
- WriteWord(&wregs[AX],(WORD)result);
- SetZFW(wregs[AX]);
- CF = OF = (*bregs[AH] != 0);
- }
- break;
- case 0x28: /* IMUL AL, Eb */
- {
- INT16 result;
-
- tmp2 = (unsigned)*bregs[AL];
-
- SetSFB(tmp2);
- SetPF(tmp2);
-
- result = (INT16)((INT8)tmp2)*(INT16)((INT8)tmp);
- WriteWord(&wregs[AX],(WORD)result);
-
- SetZFW(wregs[AX]);
-
- OF = (result >> 7 != 0) && (result >> 7 != -1);
- CF = !(!OF);
- }
- break;
- case 0x30: /* DIV AL, Ew */
- {
- UINT16 result;
-
- result = ReadWord(&wregs[AX]);
-
- if (tmp)
- {
- if ((result / tmp) > 0xff)
- {
- interrupt(0);
- break;
- }
- else
- {
- *bregs[AH] = result % tmp;
- *bregs[AL] = result / tmp;
- }
-
- }
- else
- {
- interrupt(0);
- break;
- }
- }
- break;
- case 0x38: /* IDIV AL, Ew */
- {
- INT16 result;
-
- result = ReadWord(&wregs[AX]);
-
- if (tmp)
- {
- tmp2 = result % (INT16)((INT8)tmp);
-
- if ((result /= (INT16)((INT8)tmp)) > 0xff)
- {
- interrupt(0);
- break;
- }
- else
- {
- *bregs[AL] = result;
- *bregs[AH] = tmp2;
- }
- }
- else
- {
- interrupt(0);
- break;
- }
- }
- break;
- }
- }
- static INLINE2 void i_f7pre(void)
- {
- /* Opcode 0xf7 */
- unsigned ModRM = GetMemInc(c_cs,ip);
- WORD *wrd = GetModRMRMW(ModRM);
- register unsigned tmp = ReadWord(wrd);
- register unsigned tmp2;
-
-
- switch (ModRM & 0x38)
- {
- case 0x00: /* TEST Ew, data16 */
- case 0x08: /* ??? */
- tmp2 = GetMemInc(c_cs,ip);
- tmp2 += GetMemInc(c_cs,ip) << 8;
-
- tmp &= tmp2;
-
- CF = OF = AF = 0;
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
- break;
-
- case 0x10: /* NOT Ew */
- tmp = ~tmp;
- WriteWord(wrd,tmp);
- break;
-
- case 0x18: /* NEG Ew */
- tmp2 = tmp;
- tmp = -tmp;
-
- CF = (int)tmp2 > 0;
-
- SetAF(tmp,0,tmp2);
- SetZFW(tmp);
- SetSFW(tmp);
- SetPF(tmp);
-
- WriteWord(wrd,tmp);
- break;
- case 0x20: /* MUL AX, Ew */
- {
- UINT32 result;
- tmp2 = ReadWord(&wregs[AX]);
-
- SetSFW(tmp2);
- SetPF(tmp2);
- result = (UINT32)tmp2*tmp;
- WriteWord(&wregs[AX],(WORD)result);
- result >>= 16;
- WriteWord(&wregs[DX],result);
- SetZFW(wregs[AX] | wregs[DX]);
- CF = OF = (wregs[DX] != ChangeE(0));
- }
- break;
-
- case 0x28: /* IMUL AX, Ew */
- {
- INT32 result;
-
- tmp2 = ReadWord(&wregs[AX]);
-
- SetSFW(tmp2);
- SetPF(tmp2);
-
- result = (INT32)((INT16)tmp2)*(INT32)((INT16)tmp);
- OF = (result >> 15 != 0) && (result >> 15 != -1);
- WriteWord(&wregs[AX],(WORD)result);
- result = (WORD)(result >> 16);
- WriteWord(&wregs[DX],result);
- SetZFW(wregs[AX] | wregs[DX]);
-
- CF = !(!OF);
- }
- break;
- case 0x30: /* DIV AX, Ew */
- {
- UINT32 result;
-
- result = (ReadWord(&wregs[DX]) << 16) + ReadWord(&wregs[AX]);
-
- if (tmp)
- {
- tmp2 = result % tmp;
- if ((result / tmp) > 0xffff)
- {
- interrupt(0);
- break;
- }
- else
- {
- WriteWord(&wregs[DX],tmp2);
- result /= tmp;
- WriteWord(&wregs[AX],result);
- }
- }
- else
- {
- interrupt(0);
- break;
- }
- }
- break;
- case 0x38: /* IDIV AX, Ew */
- {
- INT32 result;
-
- result = (ReadWord(&wregs[DX]) << 16) + ReadWord(&wregs[AX]);
-
- if (tmp)
- {
- tmp2 = result % (INT32)((INT16)tmp);
-
- if ((result /= (INT32)((INT16)tmp)) > 0xffff)
- {
- interrupt(0);
- break;
- }
- else
- {
- WriteWord(&wregs[AX],result);
- WriteWord(&wregs[DX],tmp2);
- }
- }
- else
- {
- interrupt(0);
- break;
- }
- }
- break;
- }
- }
- static INLINE2 void i_clc(void)
- {
- /* Opcode 0xf8 */
- CF = 0;
- }
- static INLINE2 void i_stc(void)
- {
- /* Opcode 0xf9 */
- CF = 1;
- }
- static INLINE2 void i_cli(void)
- {
- /* Opcode 0xfa */
- IF = 0;
- }
- static INLINE2 void i_sti(void)
- {
- /* Opcode 0xfb */
- IF = 1;
- if (int_blocked)
- {
- int_pending = int_blocked;
- int_blocked = 0;
- D2(printf("Unblocking interrupt\n"););
- }
- }
- static INLINE2 void i_cld(void)
- {
- /* Opcode 0xfc */
- DF = 0;
- }
- static INLINE2 void i_std(void)
- {
- /* Opcode 0xfd */
- DF = 1;
- }
- static INLINE2 void i_fepre(void)
- {
- /* Opcode 0xfe */
- unsigned ModRM = GetMemInc(c_cs,ip);
- register BYTE *dest = GetModRMRMB(ModRM);
- register unsigned tmp = *dest;
- register unsigned tmp1;
-
- if ((ModRM & 0x38) == 0)
- {
- tmp1 = tmp+1;
- SetOFB_Add(tmp1,tmp,1);
- }
- else
- {
- tmp1 = tmp-1;
- SetOFB_Sub(tmp1,1,tmp);
- }
-
- SetAF(tmp1,tmp,1);
- SetZFB(tmp1);
- SetSFB(tmp1);
- SetPF(tmp1);
-
- *dest = (BYTE)tmp1;
- }
- static INLINE2 void i_ffpre(void)
- {
- /* Opcode 0xff */
- unsigned ModRM = GetMemInc(c_cs,ip);
- register WORD *dest = GetModRMRMW(ModRM);
- register unsigned tmp;
- register unsigned tmp1;
- switch(ModRM & 0x38)
- {
- case 0x00: /* INC ew */
- tmp = ReadWord(dest);
- tmp1 = tmp+1;
-
- SetOFW_Add(tmp1,tmp,1);
- SetAF(tmp1,tmp,1);
- SetZFW(tmp1);
- SetSFW(tmp1);
- SetPF(tmp1);
-
- WriteWord(dest,(WORD)tmp1);
- break;
-
- case 0x08: /* DEC ew */
- tmp = ReadWord(dest);
- tmp1 = tmp-1;
-
- SetOFW_Sub(tmp1,1,tmp);
- SetAF(tmp1,tmp,1);
- SetZFW(tmp1);
- SetSFW(tmp1);
- SetPF(tmp1);
-
- WriteWord(dest,(WORD)tmp1);
- break;
-
- case 0x10: /* CALL ew */
- tmp = ReadWord(dest);
- tmp1 = (WORD)(ReadWord(&wregs[SP])-2);
-
- PutMemW(c_stack,tmp1,ip);
- WriteWord(&wregs[SP],tmp1);
-
- ip = (WORD)tmp;
- break;
-
- case 0x18: /* CALL FAR ea */
- tmp1 = (WORD)(ReadWord(&wregs[SP])-2);
-
- PutMemW(c_stack,tmp1,sregs[CS]);
- tmp1 = (WORD)(tmp1-2);
- PutMemW(c_stack,tmp1,ip);
- WriteWord(&wregs[SP],tmp1);
-
- ip = ReadWord(dest);
- dest++;
- sregs[CS] = ReadWord(dest);
- c_cs = SegToMemPtr(CS);
- break;
-
- case 0x20: /* JMP ea */
- ip = ReadWord(dest);
- break;
-
- case 0x28: /* JMP FAR ea */
- ip = ReadWord(dest);
- dest++;
- sregs[CS] = ReadWord(dest);
- c_cs = SegToMemPtr(CS);
- break;
-
- case 0x30: /* PUSH ea */
- tmp1 = (WORD)(ReadWord(&wregs[SP])-2);
- tmp = ReadWord(dest);
-
- PutMemW(c_stack,tmp1,tmp);
- WriteWord(&wregs[SP],tmp1);
- break;
- }
- }
- static INLINE2 void i_notdone(void)
- {
- /*
- fprintf(stderr,"Error: Unimplemented opcode %02X at cs:ip = %04X:%04X\n",
- c_cs[ip-1],sregs[CS],ip-1);
- exit(1);
- */
- TCHAR msg[256];
- wsprintf(msg, "Error: Unimplemented opcode %02X at cs:ip = %04X:%04X", c_cs[ip-1], sregs[CS], ip-1);
- MessageBox(wonw32ctx->hWnd, msg, NULL, MB_OK);
- wonw32ctx->running = FALSE;
- }
- void trap(void)
- {
- instruction[GetMemInc(c_cs,ip)]();
- interrupt(1);
- }
- void execute(void)
- {
- c_cs = SegToMemPtr(CS);
- c_ds = SegToMemPtr(DS);
- c_es = SegToMemPtr(ES);
- c_stack = c_ss = SegToMemPtr(SS);
- if (int_pending)
- external_int();
- #ifdef DEBUGGER
- call_debugger(D_TRACE);
- #endif
- #if defined(BIGCASE) && !defined(RS6000)
- /* Some compilers cannot handle large case statements */
- switch(GetMemInc(c_cs,ip))
- {
- case 0x00: i_add_br8(); break;
- case 0x01: i_add_wr16(); break;
- case 0x02: i_add_r8b(); break;
- case 0x03: i_add_r16w(); break;
- case 0x04: i_add_ald8(); break;
- case 0x05: i_add_axd16(); break;
- case 0x06: i_push_es(); break;
- case 0x07: i_pop_es(); break;
- case 0x08: i_or_br8(); break;
- case 0x09: i_or_wr16(); break;
- case 0x0a: i_or_r8b(); break;
- case 0x0b: i_or_r16w(); break;
- case 0x0c: i_or_ald8(); break;
- case 0x0d: i_or_axd16(); break;
- case 0x0e: i_push_cs(); break;
- case 0x0f: i_notdone(); break;
- case 0x10: i_adc_br8(); break;
- case 0x11: i_adc_wr16(); break;
- case 0x12: i_adc_r8b(); break;
- case 0x13: i_adc_r16w(); break;
- case 0x14: i_adc_ald8(); break;
- case 0x15: i_adc_axd16(); break;
- case 0x16: i_push_ss(); break;
- case 0x17: i_pop_ss(); break;
- case 0x18: i_sbb_br8(); break;
- case 0x19: i_sbb_wr16(); break;
- case 0x1a: i_sbb_r8b(); break;
- case 0x1b: i_sbb_r16w(); break;
- case 0x1c: i_sbb_ald8(); break;
- case 0x1d: i_sbb_axd16(); break;
- case 0x1e: i_push_ds(); break;
- case 0x1f: i_pop_ds(); break;
- case 0x20: i_and_br8(); break;
- case 0x21: i_and_wr16(); break;
- case 0x22: i_and_r8b(); break;
- case 0x23: i_and_r16w(); break;
- case 0x24: i_and_ald8(); break;
- case 0x25: i_and_axd16(); break;
- case 0x26: i_es(); break;
- case 0x27: i_daa(); break;
- case 0x28: i_sub_br8(); break;
- case 0x29: i_sub_wr16(); break;
- case 0x2a: i_sub_r8b(); break;
- case 0x2b: i_sub_r16w(); break;
- case 0x2c: i_sub_ald8(); break;
- case 0x2d: i_sub_axd16(); break;
- case 0x2e: i_cs(); break;
- case 0x2f: i_das(); break; // added
- case 0x30: i_xor_br8(); break;
- case 0x31: i_xor_wr16(); break;
- case 0x32: i_xor_r8b(); break;
- case 0x33: i_xor_r16w(); break;
- case 0x34: i_xor_ald8(); break;
- case 0x35: i_xor_axd16(); break;
- case 0x36: i_ss(); break;
- case 0x37: i_notdone(); break;
- case 0x38: i_cmp_br8(); break;
- case 0x39: i_cmp_wr16(); break;
- case 0x3a: i_cmp_r8b(); break;
- case 0x3b: i_cmp_r16w(); break;
- case 0x3c: i_cmp_ald8(); break;
- case 0x3d: i_cmp_axd16(); break;
- case 0x3e: i_ds(); break;
- case 0x3f: i_aas(); break; // added
- case 0x40: i_inc_ax(); break;
- case 0x41: i_inc_cx(); break;
- case 0x42: i_inc_dx(); break;
- case 0x43: i_inc_bx(); break;
- case 0x44: i_inc_sp(); break;
- case 0x45: i_inc_bp(); break;
- case 0x46: i_inc_si(); break;
- case 0x47: i_inc_di(); break;
- case 0x48: i_dec_ax(); break;
- case 0x49: i_dec_cx(); break;
- case 0x4a: i_dec_dx(); break;
- case 0x4b: i_dec_bx(); break;
- case 0x4c: i_dec_sp(); break;
- case 0x4d: i_dec_bp(); break;
- case 0x4e: i_dec_si(); break;
- case 0x4f: i_dec_di(); break;
- case 0x50: i_push_ax(); break;
- case 0x51: i_push_cx(); break;
- case 0x52: i_push_dx(); break;
- case 0x53: i_push_bx(); break;
- case 0x54: i_push_sp(); break;
- case 0x55: i_push_bp(); break;
- case 0x56: i_push_si(); break;
- case 0x57: i_push_di(); break;
- case 0x58: i_pop_ax(); break;
- case 0x59: i_pop_cx(); break;
- case 0x5a: i_pop_dx(); break;
- case 0x5b: i_pop_bx(); break;
- case 0x5c: i_pop_sp(); break;
- case 0x5d: i_pop_bp(); break;
- case 0x5e: i_pop_si(); break;
- case 0x5f: i_pop_di(); break;
- case 0x60: i_pusha(); break; /* added */
- case 0x61: i_popa(); break; /* added */
- case 0x62: i_bound(); break; /* added */
- case 0x63: i_notdone(); break;
- case 0x64: i_notdone(); break;
- case 0x65: i_notdone(); break;
- case 0x66: i_notdone(); break;
- case 0x67: i_notdone(); break;
- case 0x68: i_push_d16(); break; /* added */
- case 0x69: i_imul_d16(); break; /* added */
- case 0x6a: i_push_d8(); break; /* added */
- case 0x6b: i_imul_d8(); break; /* added */
- case 0x6c: i_insb(); break; /* added */
- case 0x6d: i_insw(); break; /* added */
- case 0x6e: i_outsb(); break; /* added */
- case 0x6f: i_outsw(); break; /* added */
- case 0x70: i_jo(); break;
- case 0x71: i_jno(); break;
- case 0x72: i_jb(); break;
- case 0x73: i_jnb(); break;
- case 0x74: i_jz(); break;
- case 0x75: i_jnz(); break;
- case 0x76: i_jbe(); break;
- case 0x77: i_jnbe(); break;
- case 0x78: i_js(); break;
- case 0x79: i_jns(); break;
- case 0x7a: i_jp(); break;
- case 0x7b: i_jnp(); break;
- case 0x7c: i_jl(); break;
- case 0x7d: i_jnl(); break;
- case 0x7e: i_jle(); break;
- case 0x7f: i_jnle(); break;
- case 0x80: i_80pre(); break;
- case 0x81: i_81pre(); break;
- case 0x82: i_notdone(); break;
- case 0x83: i_83pre(); break;
- case 0x84: i_test_br8(); break;
- case 0x85: i_test_wr16(); break;
- case 0x86: i_xchg_br8(); break;
- case 0x87: i_xchg_wr16(); break;
- case 0x88: i_mov_br8(); break;
- case 0x89: i_mov_wr16(); break;
- case 0x8a: i_mov_r8b(); break;
- case 0x8b: i_mov_r16w(); break;
- case 0x8c: i_mov_wsreg(); break;
- case 0x8d: i_lea(); break;
- case 0x8e: i_mov_sregw(); break;
- case 0x8f: i_popw(); break;
- case 0x90: i_nop(); break;
- case 0x91: i_xchg_axcx(); break;
- case 0x92: i_xchg_axdx(); break;
- case 0x93: i_xchg_axbx(); break;
- case 0x94: i_xchg_axsp(); break;
- case 0x95: i_xchg_axbp(); break;
- case 0x96: i_xchg_axsi(); break;
- case 0x97: i_xchg_axdi(); break;
- case 0x98: i_cbw(); break;
- case 0x99: i_cwd(); break;
- case 0x9a: i_call_far(); break;
- case 0x9b: i_wait(); break;
- case 0x9c: i_pushf(); break;
- case 0x9d: i_popf(); break;
- case 0x9e: i_sahf(); break;
- case 0x9f: i_lahf(); break;
- case 0xa0: i_mov_aldisp(); break;
- case 0xa1: i_mov_axdisp(); break;
- case 0xa2: i_mov_dispal(); break;
- case 0xa3: i_mov_dispax(); break;
- case 0xa4: i_movsb(); break;
- case 0xa5: i_movsw(); break;
- case 0xa6: i_cmpsb(); break;
- case 0xa7: i_cmpsw(); break;
- case 0xa8: i_test_ald8(); break;
- case 0xa9: i_test_axd16(); break;
- case 0xaa: i_stosb(); break;
- case 0xab: i_stosw(); break;
- case 0xac: i_lodsb(); break;
- case 0xad: i_lodsw(); break;
- case 0xae: i_scasb(); break;
- case 0xaf: i_scasw(); break;
- case 0xb0: i_mov_ald8(); break;
- case 0xb1: i_mov_cld8(); break;
- case 0xb2: i_mov_dld8(); break;
- case 0xb3: i_mov_bld8(); break;
- case 0xb4: i_mov_ahd8(); break;
- case 0xb5: i_mov_chd8(); break;
- case 0xb6: i_mov_dhd8(); break;
- case 0xb7: i_mov_bhd8(); break;
- case 0xb8: i_mov_axd16(); break;
- case 0xb9: i_mov_cxd16(); break;
- case 0xba: i_mov_dxd16(); break;
- case 0xbb: i_mov_bxd16(); break;
- case 0xbc: i_mov_spd16(); break;
- case 0xbd: i_mov_bpd16(); break;
- case 0xbe: i_mov_sid16(); break;
- case 0xbf: i_mov_did16(); break;
- case 0xc0: i_rotshft_bd8(); break; /* added */
- case 0xc1: i_rotshft_wd8(); break; /* added */
- case 0xc2: i_ret_d16(); break;
- case 0xc3: i_ret(); break;
- case 0xc4: i_les_dw(); break;
- case 0xc5: i_lds_dw(); break;
- case 0xc6: i_mov_bd8(); break;
- case 0xc7: i_mov_wd16(); break;
- case 0xc8: i_enter(); break; /* added */
- case 0xc9: i_leave(); break; /* added */
- case 0xca: i_retf_d16(); break;
- case 0xcb: i_retf(); break;
- case 0xcc: i_int3(); break;
- case 0xcd: i_int(); break;
- case 0xce: i_into(); break;
- case 0xcf: i_iret(); break;
- case 0xd0: i_d0pre(); break;
- case 0xd1: i_d1pre(); break;
- case 0xd2: i_d2pre(); break;
- case 0xd3: i_d3pre(); break;
- case 0xd4: i_aam(); break;
- case 0xd5: i_aad(); break;
- case 0xd6: i_notdone(); break;
- case 0xd7: i_xlat(); break;
- case 0xd8: i_escape(); break;
- case 0xd9: i_escape(); break;
- case 0xda: i_escape(); break;
- case 0xdb: i_escape(); break;
- case 0xdc: i_escape(); break;
- case 0xdd: i_escape(); break;
- case 0xde: i_escape(); break;
- case 0xdf: i_escape(); break;
- case 0xe0: i_loopne(); break;
- case 0xe1: i_loope(); break;
- case 0xe2: i_loop(); break;
- case 0xe3: i_jcxz(); break;
- case 0xe4: i_inal(); break;
- case 0xe5: i_inax(); break;
- case 0xe6: i_outal(); break;
- case 0xe7: i_outax(); break;
- case 0xe8: i_call_d16(); break;
- case 0xe9: i_jmp_d16(); break;
- case 0xea: i_jmp_far(); break;
- case 0xeb: i_jmp_d8(); break;
- case 0xec: i_inaldx(); break;
- case 0xed: i_inaxdx(); break;
- case 0xee: i_outdxal(); break;
- case 0xef: i_outdxax(); break;
- case 0xf0: i_lock(); break;
- case 0xf1: i_gobios(); break;
- case 0xf2: i_repne(); break;
- case 0xf3: i_repe(); break;
- case 0xf4: i_notdone(); break;
- case 0xf5: i_cmc(); break;
- case 0xf6: i_f6pre(); break;
- case 0xf7: i_f7pre(); break;
- case 0xf8: i_clc(); break;
- case 0xf9: i_stc(); break;
- case 0xfa: i_cli(); break;
- case 0xfb: i_sti(); break;
- case 0xfc: i_cld(); break;
- case 0xfd: i_std(); break;
- case 0xfe: i_fepre(); break;
- case 0xff: i_ffpre(); break;
- };
- #else
- instruction[GetMemInc(c_cs,ip)]();
- #endif
- }
- BYTE read_port(unsigned port) {
- return 0;
- }
- void write_port(unsigned port, BYTE value) {
- }
- void disable() {
- }
- void enable() {
- }
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