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KVM: x86 emulator: emulate LAHF
Opcode 9F. Signed-off-by: Avi Kivity <avi@redhat.com>
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parent
7c068e4558
commit
2dd7caa092
1 changed files with 8 additions and 1 deletions
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@ -3227,6 +3227,13 @@ static int em_cpuid(struct x86_emulate_ctxt *ctxt)
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return X86EMUL_CONTINUE;
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}
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static int em_lahf(struct x86_emulate_ctxt *ctxt)
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{
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ctxt->regs[VCPU_REGS_RAX] &= ~0xff00UL;
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ctxt->regs[VCPU_REGS_RAX] |= (ctxt->eflags & 0xff) << 8;
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return X86EMUL_CONTINUE;
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}
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static bool valid_cr(int nr)
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{
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switch (nr) {
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@ -3622,7 +3629,7 @@ static struct opcode opcode_table[256] = {
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D(DstAcc | SrcNone), I(ImplicitOps | SrcAcc, em_cwd),
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I(SrcImmFAddr | No64, em_call_far), N,
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II(ImplicitOps | Stack, em_pushf, pushf),
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II(ImplicitOps | Stack, em_popf, popf), N, N,
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II(ImplicitOps | Stack, em_popf, popf), N, I(ImplicitOps, em_lahf),
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/* 0xA0 - 0xA7 */
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I2bv(DstAcc | SrcMem | Mov | MemAbs, em_mov),
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I2bv(DstMem | SrcAcc | Mov | MemAbs | PageTable, em_mov),
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