summaryrefslogtreecommitdiff
path: root/libc/sysdeps/linux/i386/bits/string.h
diff options
context:
space:
mode:
Diffstat (limited to 'libc/sysdeps/linux/i386/bits/string.h')
-rw-r--r--libc/sysdeps/linux/i386/bits/string.h876
1 files changed, 876 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/i386/bits/string.h b/libc/sysdeps/linux/i386/bits/string.h
new file mode 100644
index 000000000..44d6f8ba4
--- /dev/null
+++ b/libc/sysdeps/linux/i386/bits/string.h
@@ -0,0 +1,876 @@
+/* Optimized, inlined string functions. i386 version.
+ Copyright (C) 1997, 1998, 1999 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. 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
+
+#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 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));
+ return __res - 1;
+}
+#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,%%eax\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 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 */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 21:50:18 +0000