diff options
| author | Avi Kivity <avi.kivity@gmail.com> | 2013-01-04 18:18:49 +0400 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2013-01-09 23:39:17 +0400 |
| commit | b7d491e7f065b5b957a27a65c9e7cd3ef96b2736 (patch) | |
| tree | 6ee28b2f87e8eb3145dac13e047045a076c9660c /arch | |
| parent | e28bbd44dad134046ef9463cbb8c1cf81f53de5e (diff) | |
KVM: x86 emulator: Support for declaring single operand fastops
Acked-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')
| -rw-r--r-- | arch/x86/kvm/emulate.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index dd71567d7c71..42c53c8071be 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -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; \ |