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KVM: x86 emulator: remove dup code of in/out instruction

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Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Wei Yongjun 2010-08-06 11:46:12 +08:00 • committed by Avi Kivity
parent 41167be544
commit a13a63faa6
1 changed files with 4 additions and 20 deletions
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24
arch/x86/kvm/emulate.c
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@ -2923,28 +2923,12 @@ special_insn:
break;
case 0x6c: /* insb */
case 0x6d: /* insw/insd */
c->dst.bytes = min(c->dst.bytes, 4u);
if (!emulator_io_permited(ctxt, ops, c->regs[VCPU_REGS_RDX],
c->dst.bytes)) {
emulate_gp(ctxt, 0);
goto done;
}
if (!pio_in_emulated(ctxt, ops, c->dst.bytes,
c->regs[VCPU_REGS_RDX], &c->dst.val))
goto done; /* IO is needed, skip writeback */
break;
c->src.val = c->regs[VCPU_REGS_RDX];
goto do_io_in;
case 0x6e: /* outsb */
case 0x6f: /* outsw/outsd */
c->src.bytes = min(c->src.bytes, 4u);
if (!emulator_io_permited(ctxt, ops, c->regs[VCPU_REGS_RDX],
c->src.bytes)) {
emulate_gp(ctxt, 0);
goto done;
}
ops->pio_out_emulated(c->src.bytes, c->regs[VCPU_REGS_RDX],
&c->src.val, 1, ctxt->vcpu);
c->dst.type = OP_NONE; /* nothing to writeback */
c->dst.val = c->regs[VCPU_REGS_RDX];
goto do_io_out;
break;
case 0x70 ... 0x7f: /* jcc (short) */
if (test_cc(c->b, ctxt->eflags))