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OpenCloudOS-Kernel
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KVM: x86 emulator: convert XADD to fastop 

Signed-off-by: Avi Kivity <avi.kivity@gmail.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
This commit is contained in:
Avi Kivity 2013-02-09 11:31:51 +02:00 committed by Gleb Natapov
parent 203831e8e4
commit e47a5f5fb7
1 changed files with 3 additions and 7 deletions
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10
arch/x86/kvm/emulate.c
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@ -853,6 +853,8 @@ FASTOP2W(bts);
FASTOP2W(btr);
FASTOP2W(btc);
FASTOP2(xadd);
static u8 test_cc(unsigned int condition, unsigned long flags)
{
u8 rc;
@ -3861,7 +3863,7 @@ static const struct opcode twobyte_table[256] = {
F(DstReg | SrcMem | ModRM, em_bsf), F(DstReg | SrcMem | ModRM, em_bsr),
D(DstReg | SrcMem8 | ModRM | Mov), D(DstReg | SrcMem16 | ModRM | Mov),
/* 0xC0 - 0xC7 */
D2bv(DstMem | SrcReg | ModRM | Lock),
F2bv(DstMem | SrcReg | ModRM | SrcWrite | Lock, em_xadd),
N, D(DstMem | SrcReg | ModRM | Mov),
N, N, N, GD(0, &group9),
/* 0xC8 - 0xCF */
@ -4698,12 +4700,6 @@ twobyte_insn:
ctxt->dst.val = (ctxt->src.bytes == 1) ? (s8) ctxt->src.val :
(s16) ctxt->src.val;
break;
case 0xc0 ... 0xc1: /* xadd */
fastop(ctxt, em_add);
/* Write back the register source. */
ctxt->src.val = ctxt->dst.orig_val;
write_register_operand(&ctxt->src);
break;
case 0xc3: /* movnti */
ctxt->dst.bytes = ctxt->op_bytes;
ctxt->dst.val = (ctxt->op_bytes == 4) ? (u32) ctxt->src.val :