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authorAvi Kivity <avi.kivity@gmail.com>2013-01-19 19:51:53 +0200
committerMarcelo Tosatti <mtosatti@redhat.com>2013-01-23 22:15:37 -0200
commit95413dc41398fec2518abf4e0449503b1306dcbc (patch)
treede61529e103aa9153724b50bab689c1ed6749fa9 /arch/x86/kvm/emulate.c
parent9ae9febae9500a0a6f5ce29ee4b8d942b5332529 (diff)
KVM: x86 emulator: convert INC/DEC to fastop
Reviewed-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi.kivity@gmail.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/kvm/emulate.c')
-rw-r--r--arch/x86/kvm/emulate.c24
1 files changed, 7 insertions, 17 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index e13138dd073e..edb09e9c111c 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2055,6 +2055,8 @@ static int em_jmp_far(struct x86_emulate_ctxt *ctxt)
FASTOP1(not);
FASTOP1(neg);
+FASTOP1(inc);
+FASTOP1(dec);
FASTOP2CL(rol);
FASTOP2CL(ror);
@@ -2105,12 +2107,6 @@ static int em_grp45(struct x86_emulate_ctxt *ctxt)
int rc = X86EMUL_CONTINUE;
switch (ctxt->modrm_reg) {
- case 0: /* inc */
- emulate_1op(ctxt, "inc");
- break;
- case 1: /* dec */
- emulate_1op(ctxt, "dec");
- break;
case 2: /* call near abs */ {
long int old_eip;
old_eip = ctxt->_eip;
@@ -3735,14 +3731,14 @@ static const struct opcode group3[] = {
};
static const struct opcode group4[] = {
- I(ByteOp | DstMem | SrcNone | Lock, em_grp45),
- I(ByteOp | DstMem | SrcNone | Lock, em_grp45),
+ F(ByteOp | DstMem | SrcNone | Lock, em_inc),
+ F(ByteOp | DstMem | SrcNone | Lock, em_dec),
N, N, N, N, N, N,
};
static const struct opcode group5[] = {
- I(DstMem | SrcNone | Lock, em_grp45),
- I(DstMem | SrcNone | Lock, em_grp45),
+ F(DstMem | SrcNone | Lock, em_inc),
+ F(DstMem | SrcNone | Lock, em_dec),
I(SrcMem | Stack, em_grp45),
I(SrcMemFAddr | ImplicitOps | Stack, em_call_far),
I(SrcMem | Stack, em_grp45),
@@ -3891,7 +3887,7 @@ static const struct opcode opcode_table[256] = {
/* 0x38 - 0x3F */
F6ALU(NoWrite, em_cmp), N, N,
/* 0x40 - 0x4F */
- X16(D(DstReg)),
+ X8(F(DstReg, em_inc)), X8(F(DstReg, em_dec)),
/* 0x50 - 0x57 */
X8(I(SrcReg | Stack, em_push)),
/* 0x58 - 0x5F */
@@ -4681,12 +4677,6 @@ special_insn:
goto twobyte_insn;
switch (ctxt->b) {
- case 0x40 ... 0x47: /* inc r16/r32 */
- emulate_1op(ctxt, "inc");
- break;
- case 0x48 ... 0x4f: /* dec r16/r32 */
- emulate_1op(ctxt, "dec");
- break;
case 0x63: /* movsxd */
if (ctxt->mode != X86EMUL_MODE_PROT64)
goto cannot_emulate;

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