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KVM: x86 emulator: reduce duplication in one operand emulation thunks 

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2008-11-26 15:14:10 +02:00
parent ecc5589f19
commit dda96d8f1b
1 changed files with 23 additions and 43 deletions
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66
arch/x86/kvm/x86_emulate.c
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@ -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. */