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bytesex.h: unify and optimize WRITEADDR()

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WRITEADDR() really doesn't need multiple implementations.  Unify them,
and optimize the case of a constant length argument (not sure if that
is currently used, however.)

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
H. Peter Anvin 2017-11-29 16:05:59 -08:00
parent cb7da7e7f6
commit b230622576
1 changed files with 25 additions and 17 deletions
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42
include/bytesex.h
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@ -76,13 +76,6 @@
(p) += 8; \
} while (0)
#define WRITEADDR(p,v,s) \
do { \
uint64_t _wa_v = (v); \
memcpy((p), &_wa_v, (s)); \
(p) += (s); \
} while (0)
#else /* !X86_MEMORY */
#define WRITECHAR(p,v) \
@ -128,16 +121,6 @@
(p) = (void *)(_wq_p + 8); \
} while (0)
#define WRITEADDR(p,v,s) \
do { \
int _wa_s = (s); \
uint64_t _wa_v = (v); \
while (_wa_s--) { \
WRITECHAR(p,_wa_v); \
_wa_v >>= 8; \
} \
} while(0)
#endif
@ -261,4 +244,29 @@ static inline uint64_t cpu_to_le64(uint64_t v)
#endif
#define WRITEADDR(p,v,s) \
do { \
switch (is_constant(s) ? (s) : 0) { \
case 1: \
WRITECHAR(p,v); \
break; \
case 2: \
WRITESHORT(p,v); \
break; \
case 4: \
WRITELONG(p,v); \
break; \
case 8: \
WRITEDLONG(p,v); \
break; \
default: \
{ \
uint64_t _wa_v = cpu_to_le64(v); \
memcpy((p), &_wa_v, (s)); \
(p) += (s); \
} \
break; \
} \
} while (0)
#endif /* NASM_BYTESEX_H */