* sysdeps/i386/bits/string.h (memcpy): Add () around arguments.
(memchr, __memrchr, strlen, strcmp, strncmp, __strchr_g, __strchr_c, __strchrnul_g, __strchrnul_c, strspn, strcspn, strpbrk): Add memory the asm uses as its input, either of size __n where __n is known or 0xfffffff. (strstr): Add "memory" clobber.
This commit is contained in:
Roland McGrath
parent
0ab7f77ef5
commit
5b2892d54e
@ -1,3 +1,12 @@
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2004-06-13 Jakub Jelinek <jakub@redhat.com>
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* sysdeps/i386/bits/string.h (memcpy): Add () around arguments.
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(memchr, __memrchr, strlen, strcmp, strncmp, __strchr_g, __strchr_c,
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__strchrnul_g, __strchrnul_c, strspn, strcspn, strpbrk): Add memory
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the asm uses as its input, either of size __n where __n is known or
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0xfffffff.
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(strstr): Add "memory" clobber.
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2004-06-14 Jakub Jelinek <jakub@redhat.com>
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[BZ #219]
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@ -43,8 +43,8 @@
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#define _HAVE_STRING_ARCH_memcpy 1
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#define memcpy(dest, src, n) \
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(__extension__ (__builtin_constant_p (n) \
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? __memcpy_c (dest, src, n) \
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: memcpy (dest, src, n)))
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? __memcpy_c ((dest), (src), (n)) \
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: memcpy ((dest), (src), (n))))
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/* This looks horribly ugly, but the compiler can optimize it totally,
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as the count is constant. */
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__STRING_INLINE void *__memcpy_c (void *__dest, __const void *__src,
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@ -301,7 +301,8 @@ memchr (__const void *__s, int __c, size_t __n)
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"movl $1,%0\n"
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"1:"
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: "=D" (__res), "=&c" (__d0)
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: "a" (__c), "0" (__s), "1" (__n)
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: "a" (__c), "0" (__s), "1" (__n),
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"m" ( *(struct { __extension__ char __x[__n]; } *)__s)
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: "cc");
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return __res - 1;
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}
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@ -324,7 +325,8 @@ __memrchr (__const void *__s, int __c, size_t __n)
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"1:\tcld\n\t"
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"incl %0"
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: "=D" (__res), "=&c" (__d0)
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: "a" (__c), "0" (__s + __n - 1), "1" (__n)
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: "a" (__c), "0" (__s + __n - 1), "1" (__n),
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"m" ( *(struct { __extension__ char __x[__n]; } *)__s)
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: "cc");
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return __res;
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}
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@ -346,7 +348,8 @@ strlen (__const char *__str)
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"repne; scasb\n\t"
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"notl %0"
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: "=c" (__res), "=&D" (__d0)
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: "1" (__str), "a" (0), "0" (0xffffffff)
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: "1" (__str), "a" (0), "0" (0xffffffff),
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"m" ( *(struct { char __x[0xfffffff]; } *)__str)
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: "cc");
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return __res - 1;
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}
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@ -475,7 +478,9 @@ strcmp (__const char *__s1, __const char *__s2)
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"orb $1,%%al\n"
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"3:"
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: "=a" (__res), "=&S" (__d0), "=&D" (__d1)
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: "1" (__s1), "2" (__s2)
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: "1" (__s1), "2" (__s2),
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"m" ( *(struct { char __x[0xfffffff]; } *)__s1),
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"m" ( *(struct { char __x[0xfffffff]; } *)__s2)
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: "cc");
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return __res;
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}
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@ -507,7 +512,9 @@ strncmp (__const char *__s1, __const char *__s2, size_t __n)
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"orb $1,%%al\n"
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"4:"
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: "=a" (__res), "=&S" (__d0), "=&D" (__d1), "=&c" (__d2)
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: "1" (__s1), "2" (__s2), "3" (__n)
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: "1" (__s1), "2" (__s2), "3" (__n),
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"m" ( *(struct { __extension__ char __x[__n]; } *)__s1),
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"m" ( *(struct { __extension__ char __x[__n]; } *)__s2)
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: "cc");
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return __res;
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}
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@ -541,7 +548,8 @@ __strchr_g (__const char *__s, int __c)
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"2:\n\t"
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"movl %1,%0"
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: "=a" (__res), "=&S" (__d0)
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: "0" (__c), "1" (__s)
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: "0" (__c), "1" (__s),
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"m" ( *(struct { char __x[0xfffffff]; } *)__s)
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: "cc");
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return __res - 1;
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}
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@ -565,7 +573,8 @@ __strchr_c (__const char *__s, int __c)
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"2:\n\t"
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"movl %1,%0"
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: "=a" (__res), "=&S" (__d0)
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: "0" (__c), "1" (__s)
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: "0" (__c), "1" (__s),
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"m" ( *(struct { char __x[0xfffffff]; } *)__s)
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: "cc");
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return __res - 1;
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}
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@ -599,7 +608,8 @@ __strchrnul_g (__const char *__s, int __c)
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"2:\n\t"
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"movl %1,%0"
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: "=a" (__res), "=&S" (__d0)
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: "0" (__c), "1" (__s)
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: "0" (__c), "1" (__s),
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"m" ( *(struct { char __x[0xfffffff]; } *)__s)
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: "cc");
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return __res - 1;
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}
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@ -622,7 +632,8 @@ __strchrnul_c (__const char *__s, int __c)
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"2:\n\t"
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"movl %1,%0"
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: "=a" (__res), "=&S" (__d0)
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: "0" (__c), "1" (__s)
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: "0" (__c), "1" (__s),
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"m" ( *(struct { char __x[0xfffffff]; } *)__s)
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: "cc");
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return __res - 1;
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}
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@ -660,7 +671,8 @@ strcspn (__const char *__s, __const char *__reject)
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"2:\n\t"
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"popl %%ebx"
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: "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&D" (__d2)
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: "d" (__reject), "0" (__s), "1" (0), "2" (0xffffffff)
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: "d" (__reject), "0" (__s), "1" (0), "2" (0xffffffff),
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"m" ( *(struct { char __x[0xfffffff]; } *)__s)
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: "cc");
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return (__res - 1) - __s;
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}
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@ -687,7 +699,8 @@ strcspn (__const char *__s, __const char *__reject)
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"jne 1b\n"
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"2:"
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: "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&d" (__d2), "=&D" (__d3)
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: "g" (__reject), "0" (__s), "1" (0), "2" (0xffffffff)
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: "g" (__reject), "0" (__s), "1" (0), "2" (0xffffffff),
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"m" ( *(struct { char __x[0xfffffff]; } *)__s)
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: "cc");
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return (__res - 1) - __s;
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}
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@ -724,7 +737,8 @@ strspn (__const char *__s, __const char *__accept)
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"2:\n\t"
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"popl %%ebx"
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: "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&D" (__d2)
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: "r" (__accept), "0" (__s), "1" (0), "2" (0xffffffff)
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: "r" (__accept), "0" (__s), "1" (0), "2" (0xffffffff),
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"m" ( *(struct { char __x[0xfffffff]; } *)__s)
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: "cc");
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return (__res - 1) - __s;
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}
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@ -751,7 +765,8 @@ strspn (__const char *__s, __const char *__accept)
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"je 1b\n"
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"2:"
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: "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&d" (__d2), "=&D" (__d3)
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: "g" (__accept), "0" (__s), "1" (0), "2" (0xffffffff)
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: "g" (__accept), "0" (__s), "1" (0), "2" (0xffffffff),
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"m" ( *(struct { char __x[0xfffffff]; } *)__s)
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: "cc");
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return (__res - 1) - __s;
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}
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@ -791,7 +806,8 @@ strpbrk (__const char *__s, __const char *__accept)
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"3:\n\t"
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"popl %%ebx"
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: "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&D" (__d2)
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: "r" (__accept), "0" (__s), "1" (0), "2" (0xffffffff)
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: "r" (__accept), "0" (__s), "1" (0), "2" (0xffffffff),
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"m" ( *(struct { char __x[0xfffffff]; } *)__s)
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: "cc");
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return __res;
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}
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@ -822,7 +838,8 @@ strpbrk (__const char *__s, __const char *__accept)
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"xorl %0,%0\n"
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"3:"
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: "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&d" (__d2), "=&D" (__d3)
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: "g" (__accept), "0" (__s), "1" (0), "2" (0xffffffff)
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: "g" (__accept), "0" (__s), "1" (0), "2" (0xffffffff),
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"m" ( *(struct { char __x[0xfffffff]; } *)__s)
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: "cc");
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return __res;
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}
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@ -862,7 +879,7 @@ strstr (__const char *__haystack, __const char *__needle)
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"popl %%ebx"
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: "=&a" (__res), "=&c" (__d0), "=&S" (__d1), "=&D" (__d2)
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: "r" (__needle), "0" (0), "1" (0xffffffff), "2" (__haystack)
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: "cc");
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: "memory", "cc");
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return __res;
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}
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# else
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@ -892,7 +909,7 @@ strstr (__const char *__haystack, __const char *__needle)
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"2:"
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: "=&a" (__res), "=&c" (__d0), "=&S" (__d1), "=&d" (__d2), "=&D" (__d3)
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: "g" (__needle), "0" (0), "1" (0xffffffff), "2" (__haystack)
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: "cc");
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: "memory", "cc");
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return __res;
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}
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# endif
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