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x86 emulator: fix parity calculation for AAD instruction

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Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
This commit is contained in:
Gleb Natapov 2013-02-13 17:50:39 +02:00
parent 7a905b1485
commit f583c29b79
1 changed files with 5 additions and 8 deletions
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13
arch/x86/kvm/emulate.c
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@ -2995,14 +2995,11 @@ static int em_aad(struct x86_emulate_ctxt *ctxt)
ctxt->dst.val = (ctxt->dst.val & 0xffff0000) | al;
ctxt->eflags &= ~(X86_EFLAGS_PF | X86_EFLAGS_SF | X86_EFLAGS_ZF);
if (!al)
ctxt->eflags |= X86_EFLAGS_ZF;
if (!(al & 1))
ctxt->eflags |= X86_EFLAGS_PF;
if (al & 0x80)
ctxt->eflags |= X86_EFLAGS_SF;
/* Set PF, ZF, SF */
ctxt->src.type = OP_IMM;
ctxt->src.val = 0;
ctxt->src.bytes = 1;
fastop(ctxt, em_or);
return X86EMUL_CONTINUE;
}