arch/arm64/include/asm/string.h

   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 #ifndef CONFIG_KASAN
   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 #define __HAVE_ARCH_STRCMP
  16 extern int strcmp(const char *, const char *);
  17
  18 #define __HAVE_ARCH_STRNCMP
  19 extern int strncmp(const char *, const char *, __kernel_size_t);
  20
  21 #define __HAVE_ARCH_STRLEN
  22 extern __kernel_size_t strlen(const char *);
  23
  24 #define __HAVE_ARCH_STRNLEN
  25 extern __kernel_size_t strnlen(const char *, __kernel_size_t);
  26
  27 #define __HAVE_ARCH_MEMCMP
  28 extern int memcmp(const void *, const void *, size_t);
  29
  30 #define __HAVE_ARCH_MEMCHR
  31 extern void *memchr(const void *, int, __kernel_size_t);
  32 #endif
  33
  34 #define __HAVE_ARCH_MEMCPY
  35 extern void *memcpy(void *, const void *, __kernel_size_t);
  36 extern void *__memcpy(void *, const void *, __kernel_size_t);
  37
  38 #define __HAVE_ARCH_MEMMOVE
  39 extern void *memmove(void *, const void *, __kernel_size_t);
  40 extern void *__memmove(void *, const void *, __kernel_size_t);
  41
  42 #define __HAVE_ARCH_MEMSET
  43 extern void *memset(void *, int, __kernel_size_t);
  44 extern void *__memset(void *, int, __kernel_size_t);
  45
  46 #ifdef CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE
  47 #define __HAVE_ARCH_MEMCPY_FLUSHCACHE
  48 void memcpy_flushcache(void *dst, const void *src, size_t cnt);
  49 #endif
  50
  51 #if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)
  52
  53 /*
  54  * For files that are not instrumented (e.g. mm/slub.c) we
  55  * should use not instrumented version of mem* functions.
  56  */
  57
  58 #define memcpy(dst, src, len) __memcpy(dst, src, len)
  59 #define memmove(dst, src, len) __memmove(dst, src, len)
  60 #define memset(s, c, n) __memset(s, c, n)
  61
  62 #ifndef __NO_FORTIFY
  63 #define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */
  64 #endif
  65
  66 #endif
  67
  68 #endif