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UserspaceEmulator: Implement the NEG instruction
Per the Intel manuals, NEG is equivalent to subtracting a value from 0.
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1 changed files with 16 additions and 3 deletions
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@ -998,9 +998,22 @@ void SoftCPU::MOV_seg_RM32(const X86::Instruction&) { TODO(); }
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void SoftCPU::MUL_RM16(const X86::Instruction&) { TODO(); }
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void SoftCPU::MUL_RM16(const X86::Instruction&) { TODO(); }
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void SoftCPU::MUL_RM32(const X86::Instruction&) { TODO(); }
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void SoftCPU::MUL_RM32(const X86::Instruction&) { TODO(); }
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void SoftCPU::MUL_RM8(const X86::Instruction&) { TODO(); }
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void SoftCPU::MUL_RM8(const X86::Instruction&) { TODO(); }
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void SoftCPU::NEG_RM16(const X86::Instruction&) { TODO(); }
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void SoftCPU::NEG_RM32(const X86::Instruction&) { TODO(); }
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void SoftCPU::NEG_RM16(const X86::Instruction& insn)
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void SoftCPU::NEG_RM8(const X86::Instruction&) { TODO(); }
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{
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insn.modrm().write16(*this, insn, op_sub<u16>(*this, 0, insn.modrm().read16(*this, insn)));
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}
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void SoftCPU::NEG_RM32(const X86::Instruction& insn)
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{
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insn.modrm().write32(*this, insn, op_sub<u32>(*this, 0, insn.modrm().read32(*this, insn)));
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}
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void SoftCPU::NEG_RM8(const X86::Instruction& insn)
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{
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insn.modrm().write8(*this, insn, op_sub<u8>(*this, 0, insn.modrm().read8(*this, insn)));
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}
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void SoftCPU::NOP(const X86::Instruction&) { TODO(); }
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void SoftCPU::NOP(const X86::Instruction&) { TODO(); }
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void SoftCPU::NOT_RM16(const X86::Instruction&) { TODO(); }
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void SoftCPU::NOT_RM16(const X86::Instruction&) { TODO(); }
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void SoftCPU::NOT_RM32(const X86::Instruction&) { TODO(); }
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void SoftCPU::NOT_RM32(const X86::Instruction&) { TODO(); }
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