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UserspaceEmulator: Implement the XADD instruction

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This commit is contained in:
Andreas Kling 2020-07-12 15:35:01 +02:00
parent 04695957e2
commit 274ac3c628
1 changed files with 27 additions and 3 deletions
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30
DevTools/UserspaceEmulator/SoftCPU.cpp
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@ -1603,9 +1603,33 @@ void SoftCPU::VERR_RM16(const X86::Instruction&) { TODO(); }
void SoftCPU::VERW_RM16(const X86::Instruction&) { TODO(); }
void SoftCPU::WAIT(const X86::Instruction&) { TODO(); }
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::XADD_RM16_reg16(const X86::Instruction& insn)
{
auto dest = insn.modrm().read16(*this, insn);
auto src = gpr16(insn.reg16());
auto result = op_add(*this, dest, src);
gpr16(insn.reg16()) = dest;
insn.modrm().write16(*this, insn, result);
}
void SoftCPU::XADD_RM32_reg32(const X86::Instruction& insn)
{
auto dest = insn.modrm().read32(*this, insn);
auto src = gpr32(insn.reg32());
auto result = op_add(*this, dest, src);
gpr32(insn.reg32()) = dest;
insn.modrm().write32(*this, insn, result);
}
void SoftCPU::XADD_RM8_reg8(const X86::Instruction& insn)
{
auto dest = insn.modrm().read8(*this, insn);
auto src = gpr8(insn.reg8());
auto result = op_add(*this, dest, src);
gpr8(insn.reg8()) = dest;
insn.modrm().write8(*this, insn, result);
}
void SoftCPU::XCHG_AX_reg16(const X86::Instruction& insn)
{