diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/x86_emulate.c | 66 |
1 files changed, 23 insertions, 43 deletions
diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c index 8f60ace1387..5f87d3e5919 100644 --- a/arch/x86/kvm/x86_emulate.c +++ b/arch/x86/kvm/x86_emulate.c @@ -359,6 +359,12 @@ static u16 group2_table[] = { "andl %"_msk",%"_LO32 _tmp"; " \ "orl %"_LO32 _tmp",%"_sav"; " +#ifdef CONFIG_X86_64 +#define ON64(x) x +#else +#define ON64(x) +#endif + /* Raw emulation: instruction has two explicit operands. */ #define __emulate_2op_nobyte(_op,_src,_dst,_eflags,_wx,_wy,_lx,_ly,_qx,_qy) \ do { \ @@ -425,42 +431,27 @@ static u16 group2_table[] = { __emulate_2op_nobyte(_op, _src, _dst, _eflags, \ "w", "r", _LO32, "r", "", "r") -/* Instruction has only one explicit operand (no source operand). */ -#define emulate_1op(_op, _dst, _eflags) \ +#define __emulate_1op(_op, _dst, _eflags, _suffix) \ do { \ unsigned long _tmp; \ \ + __asm__ __volatile__ ( \ + _PRE_EFLAGS("0", "3", "2") \ + _op _suffix " %1; " \ + _POST_EFLAGS("0", "3", "2") \ + : "=m" (_eflags), "+m" ((_dst).val), \ + "=&r" (_tmp) \ + : "i" (EFLAGS_MASK)); \ + } while (0) + +/* Instruction has only one explicit operand (no source operand). */ +#define emulate_1op(_op, _dst, _eflags) \ + do { \ switch ((_dst).bytes) { \ - case 1: \ - __asm__ __volatile__ ( \ - _PRE_EFLAGS("0", "3", "2") \ - _op"b %1; " \ - _POST_EFLAGS("0", "3", "2") \ - : "=m" (_eflags), "=m" ((_dst).val), \ - "=&r" (_tmp) \ - : "i" (EFLAGS_MASK)); \ - break; \ - case 2: \ - __asm__ __volatile__ ( \ - _PRE_EFLAGS("0", "3", "2") \ - _op"w %1; " \ - _POST_EFLAGS("0", "3", "2") \ - : "=m" (_eflags), "=m" ((_dst).val), \ - "=&r" (_tmp) \ - : "i" (EFLAGS_MASK)); \ - break; \ - case 4: \ - __asm__ __volatile__ ( \ - _PRE_EFLAGS("0", "3", "2") \ - _op"l %1; " \ - _POST_EFLAGS("0", "3", "2") \ - : "=m" (_eflags), "=m" ((_dst).val), \ - "=&r" (_tmp) \ - : "i" (EFLAGS_MASK)); \ - break; \ - case 8: \ - __emulate_1op_8byte(_op, _dst, _eflags); \ - break; \ + case 1: __emulate_1op(_op, _dst, _eflags, "b"); break; \ + case 2: __emulate_1op(_op, _dst, _eflags, "w"); break; \ + case 4: __emulate_1op(_op, _dst, _eflags, "l"); break; \ + case 8: ON64(__emulate_1op(_op, _dst, _eflags, "q")); break; \ } \ } while (0) @@ -476,19 +467,8 @@ static u16 group2_table[] = { : _qy ((_src).val), "i" (EFLAGS_MASK)); \ } while (0) -#define __emulate_1op_8byte(_op, _dst, _eflags) \ - do { \ - __asm__ __volatile__ ( \ - _PRE_EFLAGS("0", "3", "2") \ - _op"q %1; " \ - _POST_EFLAGS("0", "3", "2") \ - : "=m" (_eflags), "=m" ((_dst).val), "=&r" (_tmp) \ - : "i" (EFLAGS_MASK)); \ - } while (0) - #elif defined(__i386__) #define __emulate_2op_8byte(_op, _src, _dst, _eflags, _qx, _qy) -#define __emulate_1op_8byte(_op, _dst, _eflags) #endif /* __i386__ */ /* Fetch next part of the instruction being emulated. */ |