diff options
| author | Mike Pavone <pavone@retrodev.com> | 2013-05-09 00:30:55 -0700 |
|---|---|---|
| committer | Mike Pavone <pavone@retrodev.com> | 2013-05-09 00:30:55 -0700 |
| commit | 1a515f83fdcc620646cf8afb99a9d47ad2e7213c (patch) | |
| tree | f97444da5e851cf74a920d8781abfd9674d2e4c4 /z80_to_x86.c | |
| parent | e9cb3c417ed72f974a09c0818c65fd91bf02b792 (diff) | |
Implement carry flag for shift instructions. Implement weird behavior for bit 0 of SLL. Fix missing break statement in SRL.
Diffstat (limited to 'z80_to_x86.c')
| -rw-r--r-- | z80_to_x86.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/z80_to_x86.c b/z80_to_x86.c index 56e930c..97a3b46 100644 --- a/z80_to_x86.c +++ b/z80_to_x86.c @@ -1016,6 +1016,10 @@ uint8_t * translate_z80inst(z80inst * inst, uint8_t * dst, z80_context * context dst = translate_z80_reg(inst, &dst_op, dst, opts); } dst = shl_ir(dst, 1, dst_op.base, SZ_B); + dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); + if (inst->op == Z80_SLL) { + dst = or_ir(dst, 1, dst_op.base, SZ_B); + } if (src_op.mode != MODE_UNUSED) { dst = mov_rr(dst, dst_op.base, src_op.base, SZ_B); } @@ -1049,6 +1053,7 @@ uint8_t * translate_z80inst(z80inst * inst, uint8_t * dst, z80_context * context if (src_op.mode != MODE_UNUSED) { dst = mov_rr(dst, dst_op.base, src_op.base, SZ_B); } + dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag dst = cmp_ir(dst, 0, dst_op.base, SZ_B); @@ -1079,6 +1084,7 @@ uint8_t * translate_z80inst(z80inst * inst, uint8_t * dst, z80_context * context if (src_op.mode != MODE_UNUSED) { dst = mov_rr(dst, dst_op.base, src_op.base, SZ_B); } + dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); dst = mov_irdisp8(dst, 0, CONTEXT, zf_off(ZF_N), SZ_B); //TODO: Implement half-carry flag dst = cmp_ir(dst, 0, dst_op.base, SZ_B); @@ -1093,6 +1099,7 @@ uint8_t * translate_z80inst(z80inst * inst, uint8_t * dst, z80_context * context } else { dst = z80_save_reg(dst, inst, opts); } + break; case Z80_RLD: dst = zcycles(dst, 8); dst = mov_rr(dst, opts->regs[Z80_HL], SCRATCH1, SZ_W); |