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Commit 158de57f authored by Avi Kivity's avatar Avi Kivity Committed by Marcelo Tosatti
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KVM: x86 emulator: convert a few freestanding emulations to fastop 



Reviewed-by: default avatarGleb Natapov <gleb@redhat.com>
Signed-off-by: default avatarAvi Kivity <avi.kivity@gmail.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent 34b77652

arch/x86/kvm/emulate.c

+3 −3
Original line number Diff line number Diff line
@@ -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 @@ int x86_emulate_insn(struct x86_emulate_ctxt *ctxt) 
							(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);