From b91703dc380870510cb31569642d21d9d9b03eb2 Mon Sep 17 00:00:00 2001 From: Andreas Jaeger Date: Sun, 14 Apr 2002 07:24:12 +0000 Subject: (__strcspn_cg): Use only memory as clobber to reduce register pressure. (__strpbrk_cg): Likewise. (__mempcpy_by4): Likewise. (__strstr_cg): Likewise. Add prototype for __memrchr. --- sysdeps/i386/i486/bits/string.h | 30 ++++++++++++------------------ 1 file changed, 12 insertions(+), 18 deletions(-) (limited to 'sysdeps') diff --git a/sysdeps/i386/i486/bits/string.h b/sysdeps/i386/i486/bits/string.h index 802bbea1fb..cbb074712a 100644 --- a/sysdeps/i386/i486/bits/string.h +++ b/sysdeps/i386/i486/bits/string.h @@ -463,6 +463,8 @@ memchr (__const void *__s, int __c, size_t __n) #define _HAVE_STRING_ARCH_memrchr 1 #ifndef _FORCE_INLINES +__STRING_INLINE void *__memrchr (__const void *__s, int __c, size_t __n); + __STRING_INLINE void * __memrchr (__const void *__s, int __c, size_t __n) { @@ -729,11 +731,9 @@ __mempcpy_by4 (char *__dest, __const char *__src, size_t __srclen) "leal 4(%1),%1\n\t" "decl %3\n\t" "jnz 1b" - : "=&r" (__d0), "=r" (__tmp), "=&r" (__src), "=&r" (__d1), - "=m" ( *(struct { __extension__ char __x[__srclen]; } *)__dest) - : "1" (__tmp), "2" (__src), "3" (__srclen / 4), - "m" ( *(struct { __extension__ char __x[__srclen]; } *)__src) - : "cc"); + : "=&r" (__d0), "=r" (__tmp), "=&r" (__src), "=&r" (__d1) + : "1" (__tmp), "2" (__src), "3" (__srclen / 4) + : "memory", "cc"); return __tmp; } @@ -1535,10 +1535,8 @@ __strcspn_cg (__const char *__s, __const char __reject[], size_t __reject_len) "jne 1b\n" "2:" : "=S" (__res), "=&a" (__d0), "=&c" (__d1), "=&D" (__d2) - : "0" (__s), "d" (__reject), "g" (__reject_len), - "m" ( *(struct { char __x[0xfffffff]; } *)__s), - "m" ( *(struct { __extension__ char __x[__reject_len]; } *)__reject) - : "cc"); + : "0" (__s), "d" (__reject), "g" (__reject_len) + : "memory", "cc"); return (__res - 1) - __s; } @@ -1657,6 +1655,7 @@ __strspn_cg (__const char *__s, __const char __accept[], size_t __accept_len) "2:" : "=S" (__res), "=&d" (__d0), "=&c" (__d1), "=&D" (__d2) : "0" (__s), "1" (__accept), "g" (__accept_len), + /* Since we do not know how large the memory we access it, use a really large amount. */ "m" ( *(struct { char __x[0xfffffff]; } *)__s), "m" ( *(struct { __extension__ char __x[__accept_len]; } *)__accept) : "cc"); @@ -1755,10 +1754,8 @@ __strpbrk_cg (__const char *__s, __const char __accept[], size_t __accept_len) "xorl %0,%0\n" "3:" : "=S" (__res), "=&a" (__d0), "=&c" (__d1), "=&D" (__d2) - : "0" (__s), "d" (__accept), "g" (__accept_len), - "m" ( *(struct { char __x[0xfffffff]; } *)__s), - "m" ( *(struct { __extension__ char __x[__accept_len]; } *)__accept) - : "cc"); + : "0" (__s), "d" (__accept), "g" (__accept_len) + : "memory", "cc"); return __res; } @@ -1865,11 +1862,8 @@ __strstr_cg (__const char *__haystack, __const char __needle[], "xorl %%eax,%%eax\n" "2:" : "=a" (__res), "=&S" (__d0), "=&D" (__d1), "=&c" (__d2) - : "g" (__needle_len), "1" (__haystack), "d" (__needle), - /* Since we do not know how large the memory we access it, use a really large amount. */ - "m" ( *(struct { char __x[0xfffffff]; } *)__haystack), - "m" ( *(struct { __extension__ char __x[__needle_len]; } *)__needle) - : "cc"); + : "g" (__needle_len), "1" (__haystack), "d" (__needle) + : "memory", "cc"); return __res; } -- cgit 1.4.1