diff options
Diffstat (limited to 'sysdeps/i386/i486/bits/string.h')
| -rw-r--r-- | sysdeps/i386/i486/bits/string.h | 73 |
1 files changed, 1 insertions, 72 deletions
diff --git a/sysdeps/i386/i486/bits/string.h b/sysdeps/i386/i486/bits/string.h index 84421b40a2..6e5c3fed1f 100644 --- a/sysdeps/i386/i486/bits/string.h +++ b/sysdeps/i386/i486/bits/string.h @@ -190,20 +190,10 @@ 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 (c) \ - ? (__builtin_constant_p (n) \ - ? __memset_cc (s, c, n) \ - : __memset_cg (s, c, n)) \ + ? memset (s, c, n) \ : (__builtin_constant_p (n) \ ? __memset_gc (s, c, n) \ : __memset_gg (s, c, n)))) -#define __memset_cc(s, c, n) \ - ((n) == 0 \ - ? (s) \ - : (((n) % 4 == 0) \ - ? __memset_cc_by4 (s, c, n) \ - : (((n) % 2== 0) \ - ? __memset_cc_by2 (s, c, n) \ - : __memset_cg (s, c, n)))) #define __memset_gc(s, c, n) \ ((n) == 0 \ ? (s) \ @@ -213,48 +203,6 @@ memcmp (__const void *__s1, __const void *__s2, size_t __n) ? __memset_gc_by2 (s, c, n) \ : __memset_gg (s, c, n)))) -__STRING_INLINE void *__memset_cc_by4 (void *__s, int __c, size_t __n); - -__STRING_INLINE void * -__memset_cc_by4 (void *__s, int __c, size_t __n) -{ - register unsigned long int __d0; - register char *__tmp = __s; - __asm__ __volatile__ - ("1:\n\t" - "movl %2,(%0)\n\t" - "leal 4(%0),%0\n\t" - "decl %1\n\t" - "jnz 1b" - : "=&r" (__tmp), "=&r" (__d0) - : "q" (0x01010101UL * (unsigned char) __c), "0" (__tmp), "1" (__n / 4) - : "memory", "cc"); - return __s; -} - -__STRING_INLINE void *__memset_cc_by2 (void *__s, int __c, size_t __n); - -__STRING_INLINE void * -__memset_cc_by2 (void *__s, int __c, size_t __n) -{ - register unsigned long int __d0; - register void *__tmp = __s; - __asm__ __volatile__ - ("shrl $1,%1\n\t" /* may be divisible also by 4 */ - "jz 2f\n" - "1:\n\t" - "movl %2,(%0)\n\t" - "leal 4(%0),%0\n\t" - "decl %1\n\t" - "jnz 1b\n" - "2:\n\t" - "movw %w2,(%0)" - : "=&r" (__tmp), "=&r" (__d0) - : "q" (0x01010101UL * (unsigned char) __c), "0" (__tmp), "1" (__n / 2) - : "memory", "cc"); - return __s; -} - __STRING_INLINE void *__memset_gc_by4 (void *__s, int __c, size_t __n); __STRING_INLINE void * @@ -305,25 +253,6 @@ __memset_gc_by2 (void *__s, int __c, size_t __n) return __s; } -__STRING_INLINE void *__memset_cg (void *__s, int __c, size_t __n); - -__STRING_INLINE void * -__memset_cg (void *__s, int __c, size_t __n) -{ - register unsigned long __d0, __d1; - register void *__tmp = __s; - __asm__ __volatile__ - ("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" (0x0101U * (unsigned char) __c) - : "memory", "cc"); - return __s; -} - __STRING_INLINE void *__memset_gg (void *__s, int __c, size_t __n); __STRING_INLINE void * |