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UserspaceEmulator: Implement the XCHG instruction

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This commit is contained in:
Andreas Kling 2020-07-12 14:45:46 +02:00
parent 536ca0f8c9
commit 062e2f8614
1 changed files with 36 additions and 5 deletions
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41
DevTools/UserspaceEmulator/SoftCPU.cpp
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@ -1573,11 +1573,42 @@ void SoftCPU::WBINVD(const X86::Instruction&) { TODO(); }
void SoftCPU::XADD_RM16_reg16(const X86::Instruction&) { TODO(); }
void SoftCPU::XADD_RM32_reg32(const X86::Instruction&) { TODO(); }
void SoftCPU::XADD_RM8_reg8(const X86::Instruction&) { TODO(); }
void SoftCPU::XCHG_AX_reg16(const X86::Instruction&) { TODO(); }
void SoftCPU::XCHG_EAX_reg32(const X86::Instruction&) { TODO(); }
void SoftCPU::XCHG_reg16_RM16(const X86::Instruction&) { TODO(); }
void SoftCPU::XCHG_reg32_RM32(const X86::Instruction&) { TODO(); }
void SoftCPU::XCHG_reg8_RM8(const X86::Instruction&) { TODO(); }
void SoftCPU::XCHG_AX_reg16(const X86::Instruction& insn)
{
auto temp = gpr16(insn.reg16());
gpr16(insn.reg16()) = eax();
set_eax(temp);
}
void SoftCPU::XCHG_EAX_reg32(const X86::Instruction& insn)
{
auto temp = gpr32(insn.reg32());
gpr32(insn.reg32()) = eax();
set_eax(temp);
}
void SoftCPU::XCHG_reg16_RM16(const X86::Instruction& insn)
{
auto temp = insn.modrm().read16(*this, insn);
insn.modrm().write16(*this, insn, gpr16(insn.reg16()));
gpr16(insn.reg16()) = temp;
}
void SoftCPU::XCHG_reg32_RM32(const X86::Instruction& insn)
{
auto temp = insn.modrm().read32(*this, insn);
insn.modrm().write32(*this, insn, gpr32(insn.reg32()));
gpr32(insn.reg32()) = temp;
}
void SoftCPU::XCHG_reg8_RM8(const X86::Instruction& insn)
{
auto temp = insn.modrm().read8(*this, insn);
insn.modrm().write8(*this, insn, gpr8(insn.reg8()));
gpr8(insn.reg8()) = temp;
}
void SoftCPU::XLAT(const X86::Instruction&) { TODO(); }
#define DEFINE_GENERIC_INSN_HANDLERS_PARTIAL(mnemonic, op, update_dest) \