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
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) && !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
69