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KVM: x86 emulator: convert a few freestanding emulations to fastop

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Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi.kivity@gmail.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Avi Kivity 2013-01-19 19:51:57 +02:00 committed by Marcelo Tosatti
parent 34b77652b9
commit 158de57f90
1 changed files with 3 additions and 3 deletions
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6
arch/x86/kvm/emulate.c
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@ -2209,7 +2209,7 @@ static int em_cmpxchg(struct x86_emulate_ctxt *ctxt)
/* Save real source value, then compare EAX against destination. */
ctxt->src.orig_val = ctxt->src.val;
ctxt->src.val = reg_read(ctxt, VCPU_REGS_RAX);
emulate_2op_SrcV(ctxt, "cmp");
fastop(ctxt, em_cmp);
if (ctxt->eflags & EFLG_ZF) {
/* Success: write back to memory. */
@ -2977,7 +2977,7 @@ static int em_das(struct x86_emulate_ctxt *ctxt)
ctxt->src.type = OP_IMM;
ctxt->src.val = 0;
ctxt->src.bytes = 1;
emulate_2op_SrcV(ctxt, "or");
fastop(ctxt, em_or);
ctxt->eflags &= ~(X86_EFLAGS_AF | X86_EFLAGS_CF);
if (cf)
ctxt->eflags |= X86_EFLAGS_CF;
@ -4816,7 +4816,7 @@ twobyte_insn:
(s16) ctxt->src.val;
break;
case 0xc0 ... 0xc1: /* xadd */
emulate_2op_SrcV(ctxt, "add");
fastop(ctxt, em_add);
/* Write back the register source. */
ctxt->src.val = ctxt->dst.orig_val;
write_register_operand(&ctxt->src);