diff options
Diffstat (limited to 'm68k_core_x86.c')
| -rw-r--r-- | m68k_core_x86.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/m68k_core_x86.c b/m68k_core_x86.c index dda8238..3d55757 100644 --- a/m68k_core_x86.c +++ b/m68k_core_x86.c @@ -1273,11 +1273,32 @@ void op_rdispr(code_info *code, m68kinst *inst, uint8_t src, int32_t disp, uint8 void translate_m68k_arith(m68k_options *opts, m68kinst * inst, uint32_t flag_mask, host_ea *src_op, host_ea *dst_op) { code_info *code = &opts->gen.code; - cycles(&opts->gen, BUS); + uint8_t size = inst->dst.addr_mode == MODE_AREG ? OPSIZE_LONG : inst->extra.size; + + uint32_t numcycles; + if ((inst->op == M68K_ADDX || inst->op == M68K_SUBX) && inst->src.addr_mode != MODE_REG) { + numcycles = 6; + } else if (size == OPSIZE_LONG) { + if (inst->op == M68K_CMP) { + numcycles = 6; + } else if (inst->op == M68K_AND && inst->variant == VAR_IMMEDIATE) { + numcycles = 6; + } else if (inst->op == M68K_ADD && inst->dst.addr_mode == MODE_AREG && inst->extra.size == OPSIZE_WORD && inst->variant == VAR_QUICK) { + numcycles = 4; + } else if (inst->dst.addr_mode <= MODE_AREG) { + numcycles = inst->src.addr_mode <= MODE_AREG || inst->src.addr_mode == MODE_IMMEDIATE ? 8 : 6; + } else { + numcycles = 4; + } + } else { + numcycles = 4; + } + cycles(&opts->gen, numcycles); + if (inst->op == M68K_ADDX || inst->op == M68K_SUBX) { flag_to_carry(opts, FLAG_X); } - uint8_t size = inst->dst.addr_mode == MODE_AREG ? OPSIZE_LONG : inst->extra.size; + if (src_op->mode == MODE_REG_DIRECT) { if (dst_op->mode == MODE_REG_DIRECT) { op_rr(code, inst, src_op->base, dst_op->base, size); |