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UserspaceEmulator: Implement the XLAT instruction :^)

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This commit is contained in:
Andreas Kling 2020-07-17 17:31:43 +02:00
parent 86a7820ad7
commit af7a1eca0b
1 changed files with 5 additions and 1 deletions
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6
DevTools/UserspaceEmulator/SoftCPU.cpp
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@ -2126,7 +2126,11 @@ void SoftCPU::XCHG_reg8_RM8(const X86::Instruction& insn)
gpr8(insn.reg8()) = temp;
}
void SoftCPU::XLAT(const X86::Instruction&) { TODO(); }
void SoftCPU::XLAT(const X86::Instruction& insn)
{
u32 offset = (insn.a32() ? ebx() : bx()) + al();
set_al(read_memory8({ segment(insn.segment_prefix().value_or(X86::SegmentRegister::DS)), offset }));
}
#define DEFINE_GENERIC_INSN_HANDLERS_PARTIAL(mnemonic, op, update_dest) \
void SoftCPU::mnemonic##_AL_imm8(const X86::Instruction& insn) { generic_AL_imm8<update_dest>(op<u8>, insn); } \