diff options
Diffstat (limited to 'src/devices/emulator/x86emu/ops.c')
| -rw-r--r-- | src/devices/emulator/x86emu/ops.c | 51 |
1 files changed, 19 insertions, 32 deletions
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(); |