diff options
Diffstat (limited to 'sysdeps/i386/i486')
| -rw-r--r-- | sysdeps/i386/i486/bits/string.h | 56 |
1 files changed, 19 insertions, 37 deletions
diff --git a/sysdeps/i386/i486/bits/string.h b/sysdeps/i386/i486/bits/string.h index 2317d3f696..70a60005bb 100644 --- a/sysdeps/i386/i486/bits/string.h +++ b/sysdeps/i386/i486/bits/string.h @@ -190,18 +190,16 @@ memcmp (__const void *__s1, __const void *__s2, size_t __n) #define _HAVE_STRING_ARCH_memset 1 #define memset(s, c, n) \ (__extension__ (__builtin_constant_p (n) && (n) <= 16 \ - ? (__builtin_constant_p (c) \ - ? __memset_gc (s, ((unsigned char) (c)) * 0x01010101, n) \ - : ((n) == 1 \ - ? __memset_c1 (s, c) \ - : __memset_gc (s, c, n))) \ + ? ((n) == 1 \ + ? __memset_c1 (s, c) \ + : __memset_gc (s, c, n)) \ : (__builtin_constant_p (c) \ ? (__builtin_constant_p (n) \ ? __memset_ccn (s, c, n) \ - : __memset_gg (s, c, n)) \ + : memset (s, c, n)) \ : (__builtin_constant_p (n) \ ? __memset_gcn (s, c, n) \ - : __memset_gg (s, c, n))))) + : memset (s, c, n))))) #define __memset_c1(s, c) ({ void *__s = (s); \ *((unsigned char *) __s) = (unsigned char) (c); \ @@ -210,7 +208,7 @@ memcmp (__const void *__s1, __const void *__s2, size_t __n) #define __memset_gc(s, c, n) \ ({ void *__s = (s); \ unsigned int *__ts = (unsigned int *) __s; \ - unsigned int __c = ((unsigned char) (c)) * 0x01010101; \ + unsigned int __c = ((unsigned int) ((unsigned char) (c))) * 0x01010101; \ \ /* We apply a trick here. `gcc' would implement the following \ assignments using absolute operands. But this uses to much \ @@ -268,15 +266,19 @@ memcmp (__const void *__s1, __const void *__s2, size_t __n) #define __memset_ccn(s, c, n) \ (((n) % 4 == 0) \ - ? __memset_ccn_by4 (s, ((unsigned char) (c)) * 0x01010101, n) \ + ? __memset_ccn_by4 (s, ((unsigned int) ((unsigned char) (c))) * 0x01010101,\ + n) \ : (((n) % 2 == 0) \ - ? __memset_ccn_by2 (s, ((unsigned char) (c)) * 0x01010101, n) \ - : __memset_gg (s, c, n))) + ? __memset_ccn_by2 (s, \ + ((unsigned int) ((unsigned char) (c))) * 0x01010101,\ + n) \ + : memset (s, c, n))) -__STRING_INLINE void *__memset_ccn_by4 (void *__s, int __c, size_t __n); +__STRING_INLINE void *__memset_ccn_by4 (void *__s, unsigned int __c, + size_t __n); __STRING_INLINE void * -__memset_ccn_by4 (void *__s, int __c, size_t __n) +__memset_ccn_by4 (void *__s, unsigned int __c, size_t __n) { register void *__tmp = __s; register unsigned long int __d0; @@ -301,10 +303,11 @@ __memset_ccn_by4 (void *__s, int __c, size_t __n) return __s; } -__STRING_INLINE void *__memset_ccn_by2 (void *__s, int __c, size_t __n); +__STRING_INLINE void *__memset_ccn_by2 (void *__s, unsigned int __c, + size_t __n); __STRING_INLINE void * -__memset_ccn_by2 (void *__s, int __c, size_t __n) +__memset_ccn_by2 (void *__s, unsigned int __c, size_t __n) { register unsigned long int __d0, __d1; register void *__tmp = __s; @@ -335,7 +338,7 @@ __memset_ccn_by2 (void *__s, int __c, size_t __n) ? __memset_gcn_by4 (s, c, n) \ : (((n) % 2 == 0) \ ? __memset_gcn_by2 (s, c, n) \ - : __memset_gg (s, c, n))) + : memset (s, c, n))) __STRING_INLINE void *__memset_gcn_by4 (void *__s, int __c, size_t __n); @@ -384,27 +387,6 @@ __memset_gcn_by2 (void *__s, int __c, size_t __n) return __s; } -__STRING_INLINE void *__memset_gg (void *__s, int __c, size_t __n); - -__STRING_INLINE void * -__memset_gg (void *__s, int __c, size_t __n) -{ - register unsigned long int __d0, __d1; - register void *__tmp = __s; - __asm__ __volatile__ - ("cld\n\t" - "movb %%al,%%ah\n\t" - "shrl $1,%%ecx\n\t" - "rep; stosw\n\t" - "jnc 1f\n\t" - "movb %%al,(%%edi)\n" - "1:" - : "=&c" (__d0), "=&D" (__d1) - : "0" (__n), "1" (__tmp), "a" (__c) - : "memory", "cc"); - return __s; -} - /* Search N bytes of S for C. */ #define _HAVE_STRING_ARCH_memchr 1 |