From ab2c5ce66661e07c315a53bef9b507cf766d7905 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Sat, 9 Feb 2013 11:31:46 +0200 Subject: KVM: x86 emulator: switch MUL/DIV to DstXacc Signed-off-by: Avi Kivity Signed-off-by: Gleb Natapov --- arch/x86/kvm/emulate.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 36cb786..b9fb89b 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -142,6 +142,7 @@ /* Source 2 operand type */ #define Src2Shift (31) #define Src2None (OpNone << Src2Shift) +#define Src2Mem (OpMem << Src2Shift) #define Src2CL (OpCL << Src2Shift) #define Src2ImmByte (OpImmByte << Src2Shift) #define Src2One (OpOne << Src2Shift) @@ -548,8 +549,8 @@ FOP_END; #define __emulate_1op_rax_rdx(ctxt, _op, _suffix, _ex) \ do { \ unsigned long _tmp; \ - ulong *rax = reg_rmw((ctxt), VCPU_REGS_RAX); \ - ulong *rdx = reg_rmw((ctxt), VCPU_REGS_RDX); \ + ulong *rax = &ctxt->dst.val; \ + ulong *rdx = &ctxt->src.val; \ \ __asm__ __volatile__ ( \ _PRE_EFLAGS("0", "5", "1") \ @@ -564,7 +565,7 @@ FOP_END; _ASM_EXTABLE(1b, 3b) \ : "=m" ((ctxt)->eflags), "=&r" (_tmp), \ "+a" (*rax), "+d" (*rdx), "+qm"(_ex) \ - : "i" (EFLAGS_MASK), "m" ((ctxt)->src.val)); \ + : "i" (EFLAGS_MASK), "m" ((ctxt)->src2.val)); \ } while (0) /* instruction has only one source operand, destination is implicit (e.g. mul, div, imul, idiv) */ @@ -3735,10 +3736,10 @@ static const struct opcode group3[] = { F(DstMem | SrcImm | NoWrite, em_test), F(DstMem | SrcNone | Lock, em_not), F(DstMem | SrcNone | Lock, em_neg), - I(SrcMem, em_mul_ex), - I(SrcMem, em_imul_ex), - I(SrcMem, em_div_ex), - I(SrcMem, em_idiv_ex), + I(DstXacc | Src2Mem, em_mul_ex), + I(DstXacc | Src2Mem, em_imul_ex), + I(DstXacc | Src2Mem, em_div_ex), + I(DstXacc | Src2Mem, em_idiv_ex), }; static const struct opcode group4[] = { -- cgit v1.1