Mercurial > repos > blastem
diff z80_to_x86.c @ 242:d3b84b2a4397
Implemente CP (untested)
| author | Mike Pavone <pavone@retrodev.com> |
|---|---|
| date | Sun, 28 Apr 2013 14:05:02 -0700 |
| parents | 2586d49ddd46 |
| children | 2f069a0b487e |
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--- a/z80_to_x86.c Sun Apr 28 13:45:17 2013 -0700 +++ b/z80_to_x86.c Sun Apr 28 14:05:02 2013 -0700 @@ -557,7 +557,30 @@ dst = z80_save_reg(dst, inst, opts); dst = z80_save_ea(dst, inst, opts); break; - //case Z80_CP:*/ + case Z80_CP: + cycles = 4; + if (inst->addr_mode == Z80_IX_DISPLACE || inst->addr_mode == Z80_IY_DISPLACE) { + cycles += 12; + } else if(inst->addr_mode == Z80_IMMED) { + cycles += 3; + } + dst = zcycles(dst, cycles); + dst = translate_z80_reg(inst, &dst_op, dst, opts); + dst = translate_z80_ea(inst, &src_op, dst, opts, READ, DONT_MODIFY); + if (src_op.mode == MODE_REG_DIRECT) { + dst = cmp_rr(dst, src_op.base, dst_op.base, z80_size(inst)); + } else { + dst = cmp_ir(dst, src_op.disp, dst_op.base, z80_size(inst)); + } + dst = setcc_rdisp8(dst, CC_C, CONTEXT, zf_off(ZF_C)); + dst = mov_irdisp8(dst, 1, CONTEXT, zf_off(ZF_N), SZ_B); + dst = setcc_rdisp8(dst, CC_O, CONTEXT, zf_off(ZF_PV)); + //TODO: Implement half-carry flag + dst = setcc_rdisp8(dst, CC_Z, CONTEXT, zf_off(ZF_Z)); + dst = setcc_rdisp8(dst, CC_S, CONTEXT, zf_off(ZF_S)); + dst = z80_save_reg(dst, inst, opts); + dst = z80_save_ea(dst, inst, opts); + break; case Z80_INC: cycles = 4; if (inst->reg == Z80_IX || inst->reg == Z80_IY) {