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UserspaceEmulator: Implement short-range jump instructions

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This commit is contained in:
Andreas Kling
2020-07-11 17:12:21 +02:00
parent 42787ae309
commit 55d2bd9eec
1 changed files with 13 additions and 2 deletions
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15
DevTools/UserspaceEmulator/SoftCPU.cpp
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@@ -587,9 +587,20 @@ void SoftCPU::JMP_imm16(const X86::Instruction&) { TODO(); }
void SoftCPU::JMP_imm16_imm16(const X86::Instruction&) { TODO(); }
void SoftCPU::JMP_imm16_imm32(const X86::Instruction&) { TODO(); }
void SoftCPU::JMP_imm32(const X86::Instruction&) { TODO(); }
void SoftCPU::JMP_short_imm8(const X86::Instruction&) { TODO(); }
void SoftCPU::JMP_short_imm8(const X86::Instruction& insn)
{
set_eip(eip() + (i8)insn.imm8());
}
void SoftCPU::Jcc_NEAR_imm(const X86::Instruction&) { TODO(); }
void SoftCPU::Jcc_imm8(const X86::Instruction&) { TODO(); }
void SoftCPU::Jcc_imm8(const X86::Instruction& insn)
{
if (evaluate_condition(insn.cc()))
set_eip(eip() + (i8)insn.imm8());
}
void SoftCPU::LAHF(const X86::Instruction&) { TODO(); }
void SoftCPU::LAR_reg16_RM16(const X86::Instruction&) { TODO(); }
void SoftCPU::LAR_reg32_RM32(const X86::Instruction&) { TODO(); }