mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 19:30:10 +00:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
905 lines
22 KiB
C
905 lines
22 KiB
C
/* Optimized, inlined string functions. i386 version.
|
|
Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#ifndef _STRING_H
|
|
# error "Never use <bits/string.h> directly; include <string.h> instead."
|
|
#endif
|
|
|
|
/* The ix86 processors can access unaligned multi-byte variables. */
|
|
#define _STRING_ARCH_unaligned 1
|
|
|
|
|
|
/* We only provide optimizations if the user selects them and if
|
|
GNU CC is used. */
|
|
#if !defined __NO_STRING_INLINES && defined __USE_STRING_INLINES \
|
|
&& defined __GNUC__ && __GNUC__ >= 2 && !__BOUNDED_POINTERS__
|
|
|
|
#ifndef __STRING_INLINE
|
|
# ifdef __cplusplus
|
|
# define __STRING_INLINE inline
|
|
# else
|
|
# define __STRING_INLINE extern __inline
|
|
# endif
|
|
#endif
|
|
|
|
|
|
/* Copy N bytes of SRC to DEST. */
|
|
#define _HAVE_STRING_ARCH_memcpy 1
|
|
#define memcpy(dest, src, n) \
|
|
(__extension__ (__builtin_constant_p (n) \
|
|
? __memcpy_c (dest, src, n) \
|
|
: memcpy (dest, src, n)))
|
|
/* This looks horribly ugly, but the compiler can optimize it totally,
|
|
as the count is constant. */
|
|
__STRING_INLINE void *__memcpy_c (void *__dest, __const void *__src,
|
|
size_t __n);
|
|
|
|
__STRING_INLINE void *
|
|
__memcpy_c (void *__dest, __const void *__src, size_t __n)
|
|
{
|
|
register unsigned long int __d0, __d1, __d2;
|
|
union {
|
|
unsigned int __ui;
|
|
unsigned short int __usi;
|
|
unsigned char __uc;
|
|
} *__u = __dest;
|
|
switch (__n)
|
|
{
|
|
case 0:
|
|
return __dest;
|
|
case 1:
|
|
__u->__uc = *(const unsigned char *) __src;
|
|
return __dest;
|
|
case 2:
|
|
__u->__usi = *(const unsigned short int *) __src;
|
|
return __dest;
|
|
case 3:
|
|
__u->__usi = *(const unsigned short int *) __src;
|
|
__u = (void *) __u + 2;
|
|
__u->__uc = *(2 + (const unsigned char *) __src);
|
|
return __dest;
|
|
case 4:
|
|
__u->__ui = *(const unsigned int *) __src;
|
|
return __dest;
|
|
case 6:
|
|
__u->__ui = *(const unsigned int *) __src;
|
|
__u = (void *) __u + 4;
|
|
__u->__usi = *(2 + (const unsigned short int *) __src);
|
|
return __dest;
|
|
case 8:
|
|
__u->__ui = *(const unsigned int *) __src;
|
|
__u = (void *) __u + 4;
|
|
__u->__ui = *(1 + (const unsigned int *) __src);
|
|
return __dest;
|
|
case 12:
|
|
__u->__ui = *(const unsigned int *) __src;
|
|
__u = (void *) __u + 4;
|
|
__u->__ui = *(1 + (const unsigned int *) __src);
|
|
__u = (void *) __u + 4;
|
|
__u->__ui = *(2 + (const unsigned int *) __src);
|
|
return __dest;
|
|
case 16:
|
|
__u->__ui = *(const unsigned int *) __src;
|
|
__u = (void *) __u + 4;
|
|
__u->__ui = *(1 + (const unsigned int *) __src);
|
|
__u = (void *) __u + 4;
|
|
__u->__ui = *(2 + (const unsigned int *) __src);
|
|
__u = (void *) __u + 4;
|
|
__u->__ui = *(3 + (const unsigned int *) __src);
|
|
return __dest;
|
|
case 20:
|
|
__u->__ui = *(const unsigned int *) __src;
|
|
__u = (void *) __u + 4;
|
|
__u->__ui = *(1 + (const unsigned int *) __src);
|
|
__u = (void *) __u + 4;
|
|
__u->__ui = *(2 + (const unsigned int *) __src);
|
|
__u = (void *) __u + 4;
|
|
__u->__ui = *(3 + (const unsigned int *) __src);
|
|
__u = (void *) __u + 4;
|
|
__u->__ui = *(4 + (const unsigned int *) __src);
|
|
return __dest;
|
|
}
|
|
#define __COMMON_CODE(x) \
|
|
__asm__ __volatile__ \
|
|
("cld\n\t" \
|
|
"rep; movsl" \
|
|
x \
|
|
: "=&c" (__d0), "=&D" (__d1), "=&S" (__d2) \
|
|
: "0" (__n / 4), "1" (&__u->__uc), "2" (__src) \
|
|
: "memory");
|
|
|
|
switch (__n % 4)
|
|
{
|
|
case 0:
|
|
__COMMON_CODE ("");
|
|
break;
|
|
case 1:
|
|
__COMMON_CODE ("\n\tmovsb");
|
|
break;
|
|
case 2:
|
|
__COMMON_CODE ("\n\tmovsw");
|
|
break;
|
|
case 3:
|
|
__COMMON_CODE ("\n\tmovsw\n\tmovsb");
|
|
break;
|
|
}
|
|
return __dest;
|
|
#undef __COMMON_CODE
|
|
}
|
|
|
|
|
|
/* Copy N bytes of SRC to DEST, guaranteeing
|
|
correct behavior for overlapping strings. */
|
|
#define _HAVE_STRING_ARCH_memmove 1
|
|
#ifndef _FORCE_INLINES
|
|
__STRING_INLINE void *
|
|
memmove (void *__dest, __const void *__src, size_t __n)
|
|
{
|
|
register unsigned long int __d0, __d1, __d2;
|
|
if (__dest < __src)
|
|
__asm__ __volatile__
|
|
("cld\n\t"
|
|
"rep\n\t"
|
|
"movsb"
|
|
: "=&c" (__d0), "=&S" (__d1), "=&D" (__d2)
|
|
: "0" (__n), "1" (__src), "2" (__dest)
|
|
: "memory");
|
|
else
|
|
__asm__ __volatile__
|
|
("std\n\t"
|
|
"rep\n\t"
|
|
"movsb\n\t"
|
|
"cld"
|
|
: "=&c" (__d0), "=&S" (__d1), "=&D" (__d2)
|
|
: "0" (__n), "1" (__n - 1 + (const char *) __src),
|
|
"2" (__n - 1 + (char *) __dest)
|
|
: "memory");
|
|
return __dest;
|
|
}
|
|
#endif
|
|
|
|
/* Set N bytes of S to C. */
|
|
#define _HAVE_STRING_ARCH_memset 1
|
|
#define _USE_STRING_ARCH_memset 1
|
|
#define memset(s, c, n) \
|
|
(__extension__ (__builtin_constant_p (c) \
|
|
? (__builtin_constant_p (n) \
|
|
? __memset_cc (s, 0x01010101UL * (unsigned char) (c), n) \
|
|
: __memset_cg (s, 0x01010101UL * (unsigned char) (c), n))\
|
|
: __memset_gg (s, c, n)))
|
|
|
|
__STRING_INLINE void *__memset_cc (void *__s, unsigned long int __pattern,
|
|
size_t __n);
|
|
|
|
__STRING_INLINE void *
|
|
__memset_cc (void *__s, unsigned long int __pattern, size_t __n)
|
|
{
|
|
register unsigned long int __d0, __d1;
|
|
union {
|
|
unsigned int __ui;
|
|
unsigned short int __usi;
|
|
unsigned char __uc;
|
|
} *__u = __s;
|
|
switch (__n)
|
|
{
|
|
case 0:
|
|
return __s;
|
|
case 1:
|
|
__u->__uc = __pattern;
|
|
return __s;
|
|
case 2:
|
|
__u->__usi = __pattern;
|
|
return __s;
|
|
case 3:
|
|
__u->__usi = __pattern;
|
|
__u = __extension__ ((void *) __u + 2);
|
|
__u->__uc = __pattern;
|
|
return __s;
|
|
case 4:
|
|
__u->__ui = __pattern;
|
|
return __s;
|
|
}
|
|
#define __COMMON_CODE(x) \
|
|
__asm__ __volatile__ \
|
|
("cld\n\t" \
|
|
"rep; stosl" \
|
|
x \
|
|
: "=&c" (__d0), "=&D" (__d1) \
|
|
: "a" (__pattern), "0" (__n / 4), "1" (&__u->__uc) \
|
|
: "memory")
|
|
|
|
switch (__n % 4)
|
|
{
|
|
case 0:
|
|
__COMMON_CODE ("");
|
|
break;
|
|
case 1:
|
|
__COMMON_CODE ("\n\tstosb");
|
|
break;
|
|
case 2:
|
|
__COMMON_CODE ("\n\tstosw");
|
|
break;
|
|
case 3:
|
|
__COMMON_CODE ("\n\tstosw\n\tstosb");
|
|
break;
|
|
}
|
|
return __s;
|
|
#undef __COMMON_CODE
|
|
}
|
|
|
|
__STRING_INLINE void *__memset_cg (void *__s, unsigned long __c, size_t __n);
|
|
|
|
__STRING_INLINE void *
|
|
__memset_cg (void *__s, unsigned long __c, size_t __n)
|
|
{
|
|
register unsigned long int __d0, __d1;
|
|
__asm__ __volatile__
|
|
("cld\n\t"
|
|
"rep; stosl\n\t"
|
|
"testb $2,%b3\n\t"
|
|
"je 1f\n\t"
|
|
"stosw\n"
|
|
"1:\n\t"
|
|
"testb $1,%b3\n\t"
|
|
"je 2f\n\t"
|
|
"stosb\n"
|
|
"2:"
|
|
: "=&c" (__d0), "=&D" (__d1)
|
|
: "a" (__c), "q" (__n), "0" (__n / 4), "1" (__s)
|
|
: "memory");
|
|
return __s;
|
|
}
|
|
|
|
__STRING_INLINE void *__memset_gg (void *__s, char __c, size_t __n);
|
|
|
|
__STRING_INLINE void *
|
|
__memset_gg (void *__s, char __c, size_t __n)
|
|
{
|
|
register unsigned long int __d0, __d1;
|
|
__asm__ __volatile__
|
|
("cld\n\t"
|
|
"rep; stosb"
|
|
: "=&D" (__d0), "=&c" (__d1)
|
|
: "a" (__c), "0" (__s), "1" (__n)
|
|
: "memory");
|
|
return __s;
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Search N bytes of S for C. */
|
|
#define _HAVE_STRING_ARCH_memchr 1
|
|
#ifndef _FORCE_INLINES
|
|
__STRING_INLINE void *
|
|
memchr (__const void *__s, int __c, size_t __n)
|
|
{
|
|
register unsigned long int __d0;
|
|
register void *__res;
|
|
if (__n == 0)
|
|
return NULL;
|
|
__asm__ __volatile__
|
|
("cld\n\t"
|
|
"repne; scasb\n\t"
|
|
"je 1f\n\t"
|
|
"movl $1,%0\n"
|
|
"1:"
|
|
: "=D" (__res), "=&c" (__d0)
|
|
: "a" (__c), "0" (__s), "1" (__n)
|
|
: "cc");
|
|
return __res - 1;
|
|
}
|
|
#endif
|
|
|
|
#define _HAVE_STRING_ARCH_memrchr 1
|
|
#ifndef _FORCE_INLINES
|
|
__STRING_INLINE void *
|
|
__memrchr (__const void *__s, int __c, size_t __n)
|
|
{
|
|
register unsigned long int __d0;
|
|
register void *__res;
|
|
if (__n == 0)
|
|
return NULL;
|
|
__asm__ __volatile__
|
|
("std\n\t"
|
|
"repne; scasb\n\t"
|
|
"je 1f\n\t"
|
|
"orl $-1,%0\n"
|
|
"1:\tcld"
|
|
: "=D" (__res), "=&c" (__d0)
|
|
: "a" (__c), "0" (__s + __n - 1), "1" (__n)
|
|
: "cc");
|
|
return __res + 1;
|
|
}
|
|
# ifdef __USE_GNU
|
|
# define memrchr(s, c, n) __memrchr (s, c, n)
|
|
# endif
|
|
#endif
|
|
|
|
/* Return the length of S. */
|
|
#define _HAVE_STRING_ARCH_strlen 1
|
|
#ifndef _FORCE_INLINES
|
|
__STRING_INLINE size_t
|
|
strlen (__const char *__str)
|
|
{
|
|
register unsigned long int __d0;
|
|
register size_t __res;
|
|
__asm__ __volatile__
|
|
("cld\n\t"
|
|
"repne; scasb\n\t"
|
|
"notl %0"
|
|
: "=c" (__res), "=&D" (__d0)
|
|
: "1" (__str), "a" (0), "0" (0xffffffff)
|
|
: "cc");
|
|
return __res - 1;
|
|
}
|
|
#endif
|
|
|
|
/* Copy SRC to DEST. */
|
|
#define _HAVE_STRING_ARCH_strcpy 1
|
|
#ifndef _FORCE_INLINES
|
|
__STRING_INLINE char *
|
|
strcpy (char *__dest, __const char *__src)
|
|
{
|
|
register unsigned long int __d0, __d1;
|
|
__asm__ __volatile__
|
|
("cld\n"
|
|
"1:\n\t"
|
|
"lodsb\n\t"
|
|
"stosb\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"jne 1b"
|
|
: "=&S" (__d0), "=&D" (__d1)
|
|
: "0" (__src), "1" (__dest)
|
|
: "ax", "memory", "cc");
|
|
return __dest;
|
|
}
|
|
#endif
|
|
|
|
/* Copy no more than N characters of SRC to DEST. */
|
|
#define _HAVE_STRING_ARCH_strncpy 1
|
|
#ifndef _FORCE_INLINES
|
|
__STRING_INLINE char *
|
|
strncpy (char *__dest, __const char *__src, size_t __n)
|
|
{
|
|
register unsigned long int __d0, __d1, __d2;
|
|
__asm__ __volatile__
|
|
("cld\n"
|
|
"1:\n\t"
|
|
"decl %2\n\t"
|
|
"js 2f\n\t"
|
|
"lodsb\n\t"
|
|
"stosb\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"jne 1b\n\t"
|
|
"rep; stosb\n"
|
|
"2:"
|
|
: "=&S" (__d0), "=&D" (__d1), "=&c" (__d2)
|
|
: "0" (__src), "1" (__dest), "2" (__n)
|
|
: "ax", "memory", "cc");
|
|
return __dest;
|
|
}
|
|
#endif
|
|
|
|
/* Append SRC onto DEST. */
|
|
#define _HAVE_STRING_ARCH_strcat 1
|
|
#ifndef _FORCE_INLINES
|
|
__STRING_INLINE char *
|
|
strcat (char *__dest, __const char *__src)
|
|
{
|
|
register unsigned long int __d0, __d1, __d2, __d3;
|
|
__asm__ __volatile__
|
|
("cld\n\t"
|
|
"repne; scasb\n\t"
|
|
"decl %1\n"
|
|
"1:\n\t"
|
|
"lodsb\n\t"
|
|
"stosb\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"jne 1b"
|
|
: "=&S" (__d0), "=&D" (__d1), "=&c" (__d2), "=&a" (__d3)
|
|
: "0" (__src), "1" (__dest), "2" (0xffffffff), "3" (0)
|
|
: "memory", "cc");
|
|
return __dest;
|
|
}
|
|
#endif
|
|
|
|
/* Append no more than N characters from SRC onto DEST. */
|
|
#define _HAVE_STRING_ARCH_strncat 1
|
|
#ifndef _FORCE_INLINES
|
|
__STRING_INLINE char *
|
|
strncat (char *__dest, __const char *__src, size_t __n)
|
|
{
|
|
register unsigned long int __d0, __d1, __d2, __d3;
|
|
__asm__ __volatile__
|
|
("cld\n\t"
|
|
"repne; scasb\n\t"
|
|
"decl %1\n\t"
|
|
"movl %4,%2\n"
|
|
"1:\n\t"
|
|
"decl %2\n\t"
|
|
"js 2f\n\t"
|
|
"lodsb\n\t"
|
|
"stosb\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"jne 1b\n\t"
|
|
"jmp 3f\n"
|
|
"2:\n\t"
|
|
"xorl %3,%3\n\t"
|
|
"stosb\n"
|
|
"3:"
|
|
: "=&S" (__d0), "=&D" (__d1), "=&c" (__d2), "=&a" (__d3)
|
|
: "g" (__n), "0" (__src), "1" (__dest), "2" (0xffffffff), "3" (0)
|
|
: "memory", "cc");
|
|
return __dest;
|
|
}
|
|
#endif
|
|
|
|
/* Compare S1 and S2. */
|
|
#define _HAVE_STRING_ARCH_strcmp 1
|
|
#ifndef _FORCE_INLINES
|
|
__STRING_INLINE int
|
|
strcmp (__const char *__s1, __const char *__s2)
|
|
{
|
|
register unsigned long int __d0, __d1;
|
|
register int __res;
|
|
__asm__ __volatile__
|
|
("cld\n"
|
|
"1:\n\t"
|
|
"lodsb\n\t"
|
|
"scasb\n\t"
|
|
"jne 2f\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"jne 1b\n\t"
|
|
"xorl %%eax,%%eax\n\t"
|
|
"jmp 3f\n"
|
|
"2:\n\t"
|
|
"sbbl %%eax,%%eax\n\t"
|
|
"orb $1,%%al\n"
|
|
"3:"
|
|
: "=a" (__res), "=&S" (__d0), "=&D" (__d1)
|
|
: "1" (__s1), "2" (__s2)
|
|
: "cc");
|
|
return __res;
|
|
}
|
|
#endif
|
|
|
|
/* Compare N characters of S1 and S2. */
|
|
#define _HAVE_STRING_ARCH_strncmp 1
|
|
#ifndef _FORCE_INLINES
|
|
__STRING_INLINE int
|
|
strncmp (__const char *__s1, __const char *__s2, size_t __n)
|
|
{
|
|
register unsigned long int __d0, __d1, __d2;
|
|
register int __res;
|
|
__asm__ __volatile__
|
|
("cld\n"
|
|
"1:\n\t"
|
|
"decl %3\n\t"
|
|
"js 2f\n\t"
|
|
"lodsb\n\t"
|
|
"scasb\n\t"
|
|
"jne 3f\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"jne 1b\n"
|
|
"2:\n\t"
|
|
"xorl %%eax,%%eax\n\t"
|
|
"jmp 4f\n"
|
|
"3:\n\t"
|
|
"sbbl %%eax,%%eax\n\t"
|
|
"orb $1,%%al\n"
|
|
"4:"
|
|
: "=a" (__res), "=&S" (__d0), "=&D" (__d1), "=&c" (__d2)
|
|
: "1" (__s1), "2" (__s2), "3" (__n)
|
|
: "cc");
|
|
return __res;
|
|
}
|
|
#endif
|
|
|
|
/* Find the first occurrence of C in S. */
|
|
#define _HAVE_STRING_ARCH_strchr 1
|
|
#define _USE_STRING_ARCH_strchr 1
|
|
#define strchr(s, c) \
|
|
(__extension__ (__builtin_constant_p (c) \
|
|
? __strchr_c (s, ((c) & 0xff) << 8) \
|
|
: __strchr_g (s, c)))
|
|
|
|
__STRING_INLINE char *__strchr_g (__const char *__s, int __c);
|
|
|
|
__STRING_INLINE char *
|
|
__strchr_g (__const char *__s, int __c)
|
|
{
|
|
register unsigned long int __d0;
|
|
register char *__res;
|
|
__asm__ __volatile__
|
|
("cld\n\t"
|
|
"movb %%al,%%ah\n"
|
|
"1:\n\t"
|
|
"lodsb\n\t"
|
|
"cmpb %%ah,%%al\n\t"
|
|
"je 2f\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"jne 1b\n\t"
|
|
"movl $1,%1\n"
|
|
"2:\n\t"
|
|
"movl %1,%0"
|
|
: "=a" (__res), "=&S" (__d0)
|
|
: "0" (__c), "1" (__s)
|
|
: "cc");
|
|
return __res - 1;
|
|
}
|
|
|
|
__STRING_INLINE char *__strchr_c (__const char *__s, int __c);
|
|
|
|
__STRING_INLINE char *
|
|
__strchr_c (__const char *__s, int __c)
|
|
{
|
|
register unsigned long int __d0;
|
|
register char *__res;
|
|
__asm__ __volatile__
|
|
("cld\n\t"
|
|
"1:\n\t"
|
|
"lodsb\n\t"
|
|
"cmpb %%ah,%%al\n\t"
|
|
"je 2f\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"jne 1b\n\t"
|
|
"movl $1,%1\n"
|
|
"2:\n\t"
|
|
"movl %1,%0"
|
|
: "=a" (__res), "=&S" (__d0)
|
|
: "0" (__c), "1" (__s)
|
|
: "cc");
|
|
return __res - 1;
|
|
}
|
|
|
|
|
|
/* Find the first occurrence of C in S or the final NUL byte. */
|
|
#define _HAVE_STRING_ARCH_strchrnul 1
|
|
#define __strchrnul(s, c) \
|
|
(__extension__ (__builtin_constant_p (c) \
|
|
? ((c) == '\0' \
|
|
? (char *) __rawmemchr (s, c) \
|
|
: __strchrnul_c (s, ((c) & 0xff) << 8)) \
|
|
: __strchrnul_g (s, c)))
|
|
|
|
__STRING_INLINE char *__strchrnul_g (__const char *__s, int __c);
|
|
|
|
__STRING_INLINE char *
|
|
__strchrnul_g (__const char *__s, int __c)
|
|
{
|
|
register unsigned long int __d0;
|
|
register char *__res;
|
|
__asm__ __volatile__
|
|
("cld\n\t"
|
|
"movb %%al,%%ah\n"
|
|
"1:\n\t"
|
|
"lodsb\n\t"
|
|
"cmpb %%ah,%%al\n\t"
|
|
"je 2f\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"jne 1b\n\t"
|
|
"2:\n\t"
|
|
"movl %1,%0"
|
|
: "=a" (__res), "=&S" (__d0)
|
|
: "0" (__c), "1" (__s)
|
|
: "cc");
|
|
return __res - 1;
|
|
}
|
|
|
|
__STRING_INLINE char *__strchrnul_c (__const char *__s, int __c);
|
|
|
|
__STRING_INLINE char *
|
|
__strchrnul_c (__const char *__s, int __c)
|
|
{
|
|
register unsigned long int __d0;
|
|
register char *__res;
|
|
__asm__ __volatile__
|
|
("cld\n\t"
|
|
"1:\n\t"
|
|
"lodsb\n\t"
|
|
"cmpb %%ah,%%al\n\t"
|
|
"je 2f\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"jne 1b\n\t"
|
|
"2:\n\t"
|
|
"movl %1,%0"
|
|
: "=a" (__res), "=&S" (__d0)
|
|
: "0" (__c), "1" (__s)
|
|
: "cc");
|
|
return __res - 1;
|
|
}
|
|
#ifdef __USE_GNU
|
|
# define strchrnul(s, c) __strchrnul (s, c)
|
|
#endif
|
|
|
|
|
|
/* Return the length of the initial segment of S which
|
|
consists entirely of characters not in REJECT. */
|
|
#define _HAVE_STRING_ARCH_strcspn 1
|
|
#ifndef _FORCE_INLINES
|
|
# ifdef __PIC__
|
|
__STRING_INLINE size_t
|
|
strcspn (__const char *__s, __const char *__reject)
|
|
{
|
|
register unsigned long int __d0, __d1, __d2;
|
|
register char *__res;
|
|
__asm__ __volatile__
|
|
("pushl %%ebx\n\t"
|
|
"cld\n\t"
|
|
"movl %4,%%edi\n\t"
|
|
"repne; scasb\n\t"
|
|
"notl %%ecx\n\t"
|
|
"decl %%ecx\n\t"
|
|
"movl %%ecx,%%ebx\n"
|
|
"1:\n\t"
|
|
"lodsb\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"je 2f\n\t"
|
|
"movl %4,%%edi\n\t"
|
|
"movl %%ebx,%%ecx\n\t"
|
|
"repne; scasb\n\t"
|
|
"jne 1b\n"
|
|
"2:\n\t"
|
|
"popl %%ebx"
|
|
: "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&D" (__d2)
|
|
: "d" (__reject), "0" (__s), "1" (0), "2" (0xffffffff)
|
|
: "cc");
|
|
return (__res - 1) - __s;
|
|
}
|
|
# else
|
|
__STRING_INLINE size_t
|
|
strcspn (__const char *__s, __const char *__reject)
|
|
{
|
|
register unsigned long int __d0, __d1, __d2, __d3;
|
|
register char *__res;
|
|
__asm__ __volatile__
|
|
("cld\n\t"
|
|
"movl %5,%%edi\n\t"
|
|
"repne; scasb\n\t"
|
|
"notl %%ecx\n\t"
|
|
"decl %%ecx\n\t"
|
|
"movl %%ecx,%%edx\n"
|
|
"1:\n\t"
|
|
"lodsb\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"je 2f\n\t"
|
|
"movl %5,%%edi\n\t"
|
|
"movl %%edx,%%ecx\n\t"
|
|
"repne; scasb\n\t"
|
|
"jne 1b\n"
|
|
"2:"
|
|
: "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&d" (__d2), "=&D" (__d3)
|
|
: "g" (__reject), "0" (__s), "1" (0), "2" (0xffffffff)
|
|
: "cc");
|
|
return (__res - 1) - __s;
|
|
}
|
|
# endif
|
|
#endif
|
|
|
|
|
|
/* Return the length of the initial segment of S which
|
|
consists entirely of characters in ACCEPT. */
|
|
#define _HAVE_STRING_ARCH_strspn 1
|
|
#ifndef _FORCE_INLINES
|
|
# ifdef __PIC__
|
|
__STRING_INLINE size_t
|
|
strspn (__const char *__s, __const char *__accept)
|
|
{
|
|
register unsigned long int __d0, __d1, __d2;
|
|
register char *__res;
|
|
__asm__ __volatile__
|
|
("pushl %%ebx\n\t"
|
|
"cld\n\t"
|
|
"movl %4,%%edi\n\t"
|
|
"repne; scasb\n\t"
|
|
"notl %%ecx\n\t"
|
|
"decl %%ecx\n\t"
|
|
"movl %%ecx,%%ebx\n"
|
|
"1:\n\t"
|
|
"lodsb\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"je 2f\n\t"
|
|
"movl %4,%%edi\n\t"
|
|
"movl %%ebx,%%ecx\n\t"
|
|
"repne; scasb\n\t"
|
|
"je 1b\n"
|
|
"2:\n\t"
|
|
"popl %%ebx"
|
|
: "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&D" (__d2)
|
|
: "r" (__accept), "0" (__s), "1" (0), "2" (0xffffffff)
|
|
: "cc");
|
|
return (__res - 1) - __s;
|
|
}
|
|
# else
|
|
__STRING_INLINE size_t
|
|
strspn (__const char *__s, __const char *__accept)
|
|
{
|
|
register unsigned long int __d0, __d1, __d2, __d3;
|
|
register char *__res;
|
|
__asm__ __volatile__
|
|
("cld\n\t"
|
|
"movl %5,%%edi\n\t"
|
|
"repne; scasb\n\t"
|
|
"notl %%ecx\n\t"
|
|
"decl %%ecx\n\t"
|
|
"movl %%ecx,%%edx\n"
|
|
"1:\n\t"
|
|
"lodsb\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"je 2f\n\t"
|
|
"movl %5,%%edi\n\t"
|
|
"movl %%edx,%%ecx\n\t"
|
|
"repne; scasb\n\t"
|
|
"je 1b\n"
|
|
"2:"
|
|
: "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&d" (__d2), "=&D" (__d3)
|
|
: "g" (__accept), "0" (__s), "1" (0), "2" (0xffffffff)
|
|
: "cc");
|
|
return (__res - 1) - __s;
|
|
}
|
|
# endif
|
|
#endif
|
|
|
|
|
|
/* Find the first occurrence in S of any character in ACCEPT. */
|
|
#define _HAVE_STRING_ARCH_strpbrk 1
|
|
#ifndef _FORCE_INLINES
|
|
# ifdef __PIC__
|
|
__STRING_INLINE char *
|
|
strpbrk (__const char *__s, __const char *__accept)
|
|
{
|
|
unsigned long int __d0, __d1, __d2;
|
|
register char *__res;
|
|
__asm__ __volatile__
|
|
("pushl %%ebx\n\t"
|
|
"cld\n\t"
|
|
"movl %4,%%edi\n\t"
|
|
"repne; scasb\n\t"
|
|
"notl %%ecx\n\t"
|
|
"decl %%ecx\n\t"
|
|
"movl %%ecx,%%ebx\n"
|
|
"1:\n\t"
|
|
"lodsb\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"je 2f\n\t"
|
|
"movl %4,%%edi\n\t"
|
|
"movl %%ebx,%%ecx\n\t"
|
|
"repne; scasb\n\t"
|
|
"jne 1b\n\t"
|
|
"decl %0\n\t"
|
|
"jmp 3f\n"
|
|
"2:\n\t"
|
|
"xorl %0,%0\n"
|
|
"3:\n\t"
|
|
"popl %%ebx"
|
|
: "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&D" (__d2)
|
|
: "r" (__accept), "0" (__s), "1" (0), "2" (0xffffffff)
|
|
: "cc");
|
|
return __res;
|
|
}
|
|
# else
|
|
__STRING_INLINE char *
|
|
strpbrk (__const char *__s, __const char *__accept)
|
|
{
|
|
register unsigned long int __d0, __d1, __d2, __d3;
|
|
register char *__res;
|
|
__asm__ __volatile__
|
|
("cld\n\t"
|
|
"movl %5,%%edi\n\t"
|
|
"repne; scasb\n\t"
|
|
"notl %%ecx\n\t"
|
|
"decl %%ecx\n\t"
|
|
"movl %%ecx,%%edx\n"
|
|
"1:\n\t"
|
|
"lodsb\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"je 2f\n\t"
|
|
"movl %5,%%edi\n\t"
|
|
"movl %%edx,%%ecx\n\t"
|
|
"repne; scasb\n\t"
|
|
"jne 1b\n\t"
|
|
"decl %0\n\t"
|
|
"jmp 3f\n"
|
|
"2:\n\t"
|
|
"xorl %0,%0\n"
|
|
"3:"
|
|
: "=&S" (__res), "=&a" (__d0), "=&c" (__d1), "=&d" (__d2), "=&D" (__d3)
|
|
: "g" (__accept), "0" (__s), "1" (0), "2" (0xffffffff)
|
|
: "cc");
|
|
return __res;
|
|
}
|
|
# endif
|
|
#endif
|
|
|
|
|
|
/* Find the first occurrence of NEEDLE in HAYSTACK. */
|
|
#define _HAVE_STRING_ARCH_strstr 1
|
|
#ifndef _FORCE_INLINES
|
|
# ifdef __PIC__
|
|
__STRING_INLINE char *
|
|
strstr (__const char *__haystack, __const char *__needle)
|
|
{
|
|
register unsigned long int __d0, __d1, __d2;
|
|
register char *__res;
|
|
__asm__ __volatile__
|
|
("pushl %%ebx\n\t"
|
|
"cld\n\t" \
|
|
"movl %4,%%edi\n\t"
|
|
"repne; scasb\n\t"
|
|
"notl %%ecx\n\t"
|
|
"decl %%ecx\n\t" /* NOTE! This also sets Z if searchstring='' */
|
|
"movl %%ecx,%%ebx\n"
|
|
"1:\n\t"
|
|
"movl %4,%%edi\n\t"
|
|
"movl %%esi,%%eax\n\t"
|
|
"movl %%ebx,%%ecx\n\t"
|
|
"repe; cmpsb\n\t"
|
|
"je 2f\n\t" /* also works for empty string, see above */
|
|
"xchgl %%eax,%%esi\n\t"
|
|
"incl %%esi\n\t"
|
|
"cmpb $0,-1(%%eax)\n\t"
|
|
"jne 1b\n\t"
|
|
"xorl %%eax,%%eax\n\t"
|
|
"2:\n\t"
|
|
"popl %%ebx"
|
|
: "=&a" (__res), "=&c" (__d0), "=&S" (__d1), "=&D" (__d2)
|
|
: "r" (__needle), "0" (0), "1" (0xffffffff), "2" (__haystack)
|
|
: "cc");
|
|
return __res;
|
|
}
|
|
# else
|
|
__STRING_INLINE char *
|
|
strstr (__const char *__haystack, __const char *__needle)
|
|
{
|
|
register unsigned long int __d0, __d1, __d2, __d3;
|
|
register char *__res;
|
|
__asm__ __volatile__
|
|
("cld\n\t" \
|
|
"movl %5,%%edi\n\t"
|
|
"repne; scasb\n\t"
|
|
"notl %%ecx\n\t"
|
|
"decl %%ecx\n\t" /* NOTE! This also sets Z if searchstring='' */
|
|
"movl %%ecx,%%edx\n"
|
|
"1:\n\t"
|
|
"movl %5,%%edi\n\t"
|
|
"movl %%esi,%%eax\n\t"
|
|
"movl %%edx,%%ecx\n\t"
|
|
"repe; cmpsb\n\t"
|
|
"je 2f\n\t" /* also works for empty string, see above */
|
|
"xchgl %%eax,%%esi\n\t"
|
|
"incl %%esi\n\t"
|
|
"cmpb $0,-1(%%eax)\n\t"
|
|
"jne 1b\n\t"
|
|
"xorl %%eax,%%eax\n\t"
|
|
"2:"
|
|
: "=&a" (__res), "=&c" (__d0), "=&S" (__d1), "=&d" (__d2), "=&D" (__d3)
|
|
: "g" (__needle), "0" (0), "1" (0xffffffff), "2" (__haystack)
|
|
: "cc");
|
|
return __res;
|
|
}
|
|
# endif
|
|
#endif
|
|
|
|
#ifndef _FORCE_INLINES
|
|
# undef __STRING_INLINE
|
|
#endif
|
|
|
|
#endif /* use string inlines && GNU CC */
|