diff options
| author | Avi Kivity <avi@redhat.com> | 2011-09-07 16:41:39 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-09-25 19:52:36 +0300 |
| commit | 9fef72ce10dc8263fec9350a8e2a1c505ebedaae (patch) | |
| tree | 89371f2d32e783882bf2766d13e0dbb47c8e8f69 /arch/x86/kvm/emulate.c | |
| parent | d1eef45d5906a0738684833cf1e0395b4d098340 (diff) | |
KVM: x86 emulator: merge the two emulate_1op_rax_rdx implementations
We have two emulate-with-extended-accumulator implementations: once
which expect traps (_ex) and one which doesn't (plain). Drop the
plain implementation and always use the one which expects traps;
it will simply return 0 in the _ex argument and we can happily ignore
it.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/kvm/emulate.c')
| -rw-r--r-- | arch/x86/kvm/emulate.c | 64 |
1 files changed, 15 insertions, 49 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 5b4e1d46aa2..6f2e4197fe7 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -322,21 +322,7 @@ struct gprefix { } \ } while (0) -#define __emulate_1op_rax_rdx(_op, _src, _rax, _rdx, _eflags, _suffix) \ - do { \ - unsigned long _tmp; \ - \ - __asm__ __volatile__ ( \ - _PRE_EFLAGS("0", "4", "1") \ - _op _suffix " %5; " \ - _POST_EFLAGS("0", "4", "1") \ - : "=m" (_eflags), "=&r" (_tmp), \ - "+a" (_rax), "+d" (_rdx) \ - : "i" (EFLAGS_MASK), "m" ((_src).val), \ - "a" (_rax), "d" (_rdx)); \ - } while (0) - -#define __emulate_1op_rax_rdx_ex(_op, _src, _rax, _rdx, _eflags, _suffix, _ex) \ +#define __emulate_1op_rax_rdx(_op, _src, _rax, _rdx, _eflags, _suffix, _ex) \ do { \ unsigned long _tmp; \ \ @@ -358,46 +344,24 @@ struct gprefix { } while (0) /* instruction has only one source operand, destination is implicit (e.g. mul, div, imul, idiv) */ -#define emulate_1op_rax_rdx(_op, _src, _rax, _rdx, _eflags) \ +#define emulate_1op_rax_rdx(_op, _src, _rax, _rdx, _eflags, _ex) \ do { \ switch((_src).bytes) { \ case 1: \ __emulate_1op_rax_rdx(_op, _src, _rax, _rdx, \ - _eflags, "b"); \ + _eflags, "b", _ex); \ break; \ case 2: \ __emulate_1op_rax_rdx(_op, _src, _rax, _rdx, \ - _eflags, "w"); \ + _eflags, "w", _ex); \ break; \ case 4: \ __emulate_1op_rax_rdx(_op, _src, _rax, _rdx, \ - _eflags, "l"); \ - break; \ - case 8: \ - ON64(__emulate_1op_rax_rdx(_op, _src, _rax, _rdx, \ - _eflags, "q")); \ - break; \ - } \ - } while (0) - -#define emulate_1op_rax_rdx_ex(_op, _src, _rax, _rdx, _eflags, _ex) \ - do { \ - switch((_src).bytes) { \ - case 1: \ - __emulate_1op_rax_rdx_ex(_op, _src, _rax, _rdx, \ - _eflags, "b", _ex); \ - break; \ - case 2: \ - __emulate_1op_rax_rdx_ex(_op, _src, _rax, _rdx, \ - _eflags, "w", _ex); \ - break; \ - case 4: \ - __emulate_1op_rax_rdx_ex(_op, _src, _rax, _rdx, \ - _eflags, "l", _ex); \ + _eflags, "l", _ex); \ break; \ case 8: ON64( \ - __emulate_1op_rax_rdx_ex(_op, _src, _rax, _rdx, \ - _eflags, "q", _ex)); \ + __emulate_1op_rax_rdx(_op, _src, _rax, _rdx, \ + _eflags, "q", _ex)); \ break; \ } \ } while (0) @@ -1718,18 +1682,20 @@ static int em_grp3(struct x86_emulate_ctxt *ctxt) emulate_1op(ctxt, "neg"); break; case 4: /* mul */ - emulate_1op_rax_rdx("mul", ctxt->src, *rax, *rdx, ctxt->eflags); + emulate_1op_rax_rdx("mul", ctxt->src, *rax, *rdx, + ctxt->eflags, de); break; case 5: /* imul */ - emulate_1op_rax_rdx("imul", ctxt->src, *rax, *rdx, ctxt->eflags); + emulate_1op_rax_rdx("imul", ctxt->src, *rax, *rdx, + ctxt->eflags, de); break; case 6: /* div */ - emulate_1op_rax_rdx_ex("div", ctxt->src, *rax, *rdx, - ctxt->eflags, de); + emulate_1op_rax_rdx("div", ctxt->src, *rax, *rdx, + ctxt->eflags, de); break; case 7: /* idiv */ - emulate_1op_rax_rdx_ex("idiv", ctxt->src, *rax, *rdx, - ctxt->eflags, de); + emulate_1op_rax_rdx("idiv", ctxt->src, *rax, *rdx, + ctxt->eflags, de); break; default: return X86EMUL_UNHANDLEABLE; |