2 * include/asm-xtensa/string.h
4 * These trivial string functions are considered part of the public domain.
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
10 * Copyright (C) 2001 - 2005 Tensilica Inc.
13 /* We should optimize these. See arch/xtensa/lib/strncpy_user.S */
15 #ifndef _XTENSA_STRING_H
16 #define _XTENSA_STRING_H
18 #define __HAVE_ARCH_STRCPY
19 static inline char *strcpy(char *__dest, const char *__src)
21 register char *__xdest = __dest;
22 unsigned long __dummy;
24 __asm__ __volatile__("1:\n\t"
30 : "=r" (__dest), "=r" (__src), "=&r" (__dummy)
31 : "0" (__dest), "1" (__src)
37 #define __HAVE_ARCH_STRNCPY
38 static inline char *strncpy(char *__dest, const char *__src, size_t __n)
40 register char *__xdest = __dest;
41 unsigned long __dummy;
55 : "=r" (__dest), "=r" (__src), "=&r" (__dummy)
56 : "0" (__dest), "1" (__src), "r" ((uintptr_t)__src+__n)
62 #define __HAVE_ARCH_STRCMP
63 static inline int strcmp(const char *__cs, const char *__ct)
66 unsigned long __dummy;
78 : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy)
79 : "0" (__cs), "1" (__ct));
84 #define __HAVE_ARCH_STRNCMP
85 static inline int strncmp(const char *__cs, const char *__ct, size_t __n)
88 unsigned long __dummy;
103 : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy)
104 : "0" (__cs), "1" (__ct), "r" ((uintptr_t)__cs+__n));
109 #define __HAVE_ARCH_MEMSET
110 extern void *memset(void *__s, int __c, size_t __count);
111 extern void *__memset(void *__s, int __c, size_t __count);
113 #define __HAVE_ARCH_MEMCPY
114 extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
115 extern void *__memcpy(void *__to, __const__ void *__from, size_t __n);
117 #define __HAVE_ARCH_MEMMOVE
118 extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
119 extern void *__memmove(void *__dest, __const__ void *__src, size_t __n);
121 #if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)
124 * For files that are not instrumented (e.g. mm/slub.c) we
125 * should use not instrumented version of mem* functions.
128 #define memcpy(dst, src, len) __memcpy(dst, src, len)
129 #define memmove(dst, src, len) __memmove(dst, src, len)
130 #define memset(s, c, n) __memset(s, c, n)
133 #define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */
137 #endif /* _XTENSA_STRING_H */