include/asm/string.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * Copyright (C) 2013 ARM Ltd.
0004  */
0005 #ifndef __ASM_STRING_H
0006 #define __ASM_STRING_H
0007
0008 #if !(defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS))
0009 #define __HAVE_ARCH_STRRCHR
0010 extern char *strrchr(const char *, int c);
0011
0012 #define __HAVE_ARCH_STRCHR
0013 extern char *strchr(const char *, int c);
0014
0015 #define __HAVE_ARCH_STRCMP
0016 extern int strcmp(const char *, const char *);
0017
0018 #define __HAVE_ARCH_STRNCMP
0019 extern int strncmp(const char *, const char *, __kernel_size_t);
0020
0021 #define __HAVE_ARCH_STRLEN
0022 extern __kernel_size_t strlen(const char *);
0023
0024 #define __HAVE_ARCH_STRNLEN
0025 extern __kernel_size_t strnlen(const char *, __kernel_size_t);
0026
0027 #define __HAVE_ARCH_MEMCMP
0028 extern int memcmp(const void *, const void *, size_t);
0029
0030 #define __HAVE_ARCH_MEMCHR
0031 extern void *memchr(const void *, int, __kernel_size_t);
0032 #endif
0033
0034 #define __HAVE_ARCH_MEMCPY
0035 extern void *memcpy(void *, const void *, __kernel_size_t);
0036 extern void *__memcpy(void *, const void *, __kernel_size_t);
0037
0038 #define __HAVE_ARCH_MEMMOVE
0039 extern void *memmove(void *, const void *, __kernel_size_t);
0040 extern void *__memmove(void *, const void *, __kernel_size_t);
0041
0042 #define __HAVE_ARCH_MEMSET
0043 extern void *memset(void *, int, __kernel_size_t);
0044 extern void *__memset(void *, int, __kernel_size_t);
0045
0046 #ifdef CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE
0047 #define __HAVE_ARCH_MEMCPY_FLUSHCACHE
0048 void memcpy_flushcache(void *dst, const void *src, size_t cnt);
0049 #endif
0050
0051 #if (defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)) && \
0052     !defined(__SANITIZE_ADDRESS__)
0053
0054 /*
0055  * For files that are not instrumented (e.g. mm/slub.c) we
0056  * should use not instrumented version of mem* functions.
0057  */
0058
0059 #define memcpy(dst, src, len) __memcpy(dst, src, len)
0060 #define memmove(dst, src, len) __memmove(dst, src, len)
0061 #define memset(s, c, n) __memset(s, c, n)
0062
0063 #ifndef __NO_FORTIFY
0064 #define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */
0065 #endif
0066
0067 #endif
0068
0069 #endif