1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2013 ARM Ltd. 4 */ 5 #ifndef __ASM_STRING_H 6 #define __ASM_STRING_H 7 8 #if !(defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)) 9 #define __HAVE_ARCH_STRRCHR 10 extern char *strrchr(const char *, int c); 11 12 #define __HAVE_ARCH_STRCHR 13 extern char *strchr(const char *, int c); 14 15 #ifndef CONFIG_KASAN_HW_TAGS 16 #define __HAVE_ARCH_STRCMP 17 extern int strcmp(const char *, const char *); 18 19 #define __HAVE_ARCH_STRNCMP 20 extern int strncmp(const char *, const char *, __kernel_size_t); 21 #endif 22 23 #define __HAVE_ARCH_STRLEN 24 extern __kernel_size_t strlen(const char *); 25 26 #define __HAVE_ARCH_STRNLEN 27 extern __kernel_size_t strnlen(const char *, __kernel_size_t); 28 29 #define __HAVE_ARCH_MEMCMP 30 extern int memcmp(const void *, const void *, size_t); 31 32 #define __HAVE_ARCH_MEMCHR 33 extern void *memchr(const void *, int, __kernel_size_t); 34 #endif 35 36 #define __HAVE_ARCH_MEMCPY 37 extern void *memcpy(void *, const void *, __kernel_size_t); 38 extern void *__memcpy(void *, const void *, __kernel_size_t); 39 40 #define __HAVE_ARCH_MEMMOVE 41 extern void *memmove(void *, const void *, __kernel_size_t); 42 extern void *__memmove(void *, const void *, __kernel_size_t); 43 44 #define __HAVE_ARCH_MEMSET 45 extern void *memset(void *, int, __kernel_size_t); 46 extern void *__memset(void *, int, __kernel_size_t); 47 48 #ifdef CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE 49 #define __HAVE_ARCH_MEMCPY_FLUSHCACHE 50 void memcpy_flushcache(void *dst, const void *src, size_t cnt); 51 #endif 52 53 #if (defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)) && \ 54 !defined(__SANITIZE_ADDRESS__) 55 56 /* 57 * For files that are not instrumented (e.g. mm/slub.c) we 58 * should use not instrumented version of mem* functions. 59 */ 60 61 #define memcpy(dst, src, len) __memcpy(dst, src, len) 62 #define memmove(dst, src, len) __memmove(dst, src, len) 63 #define memset(s, c, n) __memset(s, c, n) 64 65 #ifndef __NO_FORTIFY 66 #define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */ 67 #endif 68 69 #endif 70 71 #endif 72