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