1 /* 2 * Copyright (C) 2013 ARM Ltd. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 #ifndef __ASM_STRING_H 17 #define __ASM_STRING_H 18 19 #ifndef CONFIG_KASAN 20 #define __HAVE_ARCH_STRRCHR 21 extern char *strrchr(const char *, int c); 22 23 #define __HAVE_ARCH_STRCHR 24 extern char *strchr(const char *, int c); 25 26 #define __HAVE_ARCH_STRCMP 27 extern int strcmp(const char *, const char *); 28 29 #define __HAVE_ARCH_STRNCMP 30 extern int strncmp(const char *, const char *, __kernel_size_t); 31 32 #define __HAVE_ARCH_STRLEN 33 extern __kernel_size_t strlen(const char *); 34 35 #define __HAVE_ARCH_STRNLEN 36 extern __kernel_size_t strnlen(const char *, __kernel_size_t); 37 38 #define __HAVE_ARCH_MEMCMP 39 extern int memcmp(const void *, const void *, size_t); 40 41 #define __HAVE_ARCH_MEMCHR 42 extern void *memchr(const void *, int, __kernel_size_t); 43 #endif 44 45 #define __HAVE_ARCH_MEMCPY 46 extern void *memcpy(void *, const void *, __kernel_size_t); 47 extern void *__memcpy(void *, const void *, __kernel_size_t); 48 49 #define __HAVE_ARCH_MEMMOVE 50 extern void *memmove(void *, const void *, __kernel_size_t); 51 extern void *__memmove(void *, const void *, __kernel_size_t); 52 53 #define __HAVE_ARCH_MEMSET 54 extern void *memset(void *, int, __kernel_size_t); 55 extern void *__memset(void *, int, __kernel_size_t); 56 57 #ifdef CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE 58 #define __HAVE_ARCH_MEMCPY_FLUSHCACHE 59 void memcpy_flushcache(void *dst, const void *src, size_t cnt); 60 #endif 61 62 #if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__) 63 64 /* 65 * For files that are not instrumented (e.g. mm/slub.c) we 66 * should use not instrumented version of mem* functions. 67 */ 68 69 #define memcpy(dst, src, len) __memcpy(dst, src, len) 70 #define memmove(dst, src, len) __memmove(dst, src, len) 71 #define memset(s, c, n) __memset(s, c, n) 72 73 #ifndef __NO_FORTIFY 74 #define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */ 75 #endif 76 77 #endif 78 79 #endif 80