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Commit b7d491e7 authored by Avi Kivity's avatar Avi Kivity Committed by Marcelo Tosatti
Browse files

KVM: x86 emulator: Support for declaring single operand fastops 



Acked-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 e28bbd44

arch/x86/kvm/emulate.c

+25 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 
#include "kvm_cache_regs.h"

#include <linux/module.h>

#include <asm/kvm_emulate.h>

#include <linux/stringify.h>



#include "x86.h"

#include "tss.h"
@@ -439,6 +440,30 @@ static void invalidate_registers(struct x86_emulate_ctxt *ctxt) 
		}							\

	} while (0)



#define FOP_ALIGN ".align " __stringify(FASTOP_SIZE) " \n\t"

#define FOP_RET   "ret \n\t"



#define FOP_START(op) \

	extern void em_##op(struct fastop *fake); \

	asm(".pushsection .text, \"ax\" \n\t" \

	    ".global em_" #op " \n\t" \

            FOP_ALIGN \

	    "em_" #op ": \n\t"



#define FOP_END \

	    ".popsection")



#define FOP1E(op,  dst) \

	FOP_ALIGN #op " %" #dst " \n\t" FOP_RET



#define FASTOP1(op) \

	FOP_START(op) \

	FOP1E(op##b, al) \

	FOP1E(op##w, ax) \

	FOP1E(op##l, eax) \

	ON64(FOP1E(op##q, rax))	\

	FOP_END



#define __emulate_1op_rax_rdx(ctxt, _op, _suffix, _ex)			\

	do {								\

		unsigned long _tmp;					\