1#ifndef __ASM_ARM_STRING_H
 2#define __ASM_ARM_STRING_H
 3
 4/*
 5 * We don't do inline string functions, since the
 6 * optimised inline asm versions are not small.
 
 
 
 7 */
 8
 9#define __HAVE_ARCH_STRRCHR
10extern char * strrchr(const char * s, int c);
11
12#define __HAVE_ARCH_STRCHR
13extern char * strchr(const char * s, int c);
14
15#define __HAVE_ARCH_MEMCPY
16extern void * memcpy(void *, const void *, __kernel_size_t);
 
17
18#define __HAVE_ARCH_MEMMOVE
19extern void * memmove(void *, const void *, __kernel_size_t);
 
20
21#define __HAVE_ARCH_MEMCHR
22extern void * memchr(const void *, int, __kernel_size_t);
23
24#define __HAVE_ARCH_MEMSET
25extern void * memset(void *, int, __kernel_size_t);
 
26
27extern void __memzero(void *ptr, __kernel_size_t n);
 
 
 
 
 
 
 
 
 
 
 
 
28
29#define memset(p,v,n)							\
30	({								\
31	 	void *__p = (p); size_t __n = n;			\
32		if ((__n) != 0) {					\
33			if (__builtin_constant_p((v)) && (v) == 0)	\
34				__memzero((__p),(__n));			\
35			else						\
36				memset((__p),(v),(__n));		\
37		}							\
38		(__p);							\
39	})
 
 
 
 
 
 
 
 
40
41#endif

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __ASM_ARM_STRING_H
 3#define __ASM_ARM_STRING_H
 4
 5/*
 6 * We don't do inline string functions, since the
 7 * optimised inline asm versions are not small.
 8 *
 9 * The __underscore versions of some functions are for KASan to be able
10 * to replace them with instrumented versions.
11 */
12
13#define __HAVE_ARCH_STRRCHR
14extern char * strrchr(const char * s, int c);
15
16#define __HAVE_ARCH_STRCHR
17extern char * strchr(const char * s, int c);
18
19#define __HAVE_ARCH_MEMCPY
20extern void * memcpy(void *, const void *, __kernel_size_t);
21extern void *__memcpy(void *dest, const void *src, __kernel_size_t n);
22
23#define __HAVE_ARCH_MEMMOVE
24extern void * memmove(void *, const void *, __kernel_size_t);
25extern void *__memmove(void *dest, const void *src, __kernel_size_t n);
26
27#define __HAVE_ARCH_MEMCHR
28extern void * memchr(const void *, int, __kernel_size_t);
29
30#define __HAVE_ARCH_MEMSET
31extern void * memset(void *, int, __kernel_size_t);
32extern void *__memset(void *s, int c, __kernel_size_t n);
33
34#define __HAVE_ARCH_MEMSET32
35extern void *__memset32(uint32_t *, uint32_t v, __kernel_size_t);
36static inline void *memset32(uint32_t *p, uint32_t v, __kernel_size_t n)
37{
38	return __memset32(p, v, n * 4);
39}
40
41#define __HAVE_ARCH_MEMSET64
42extern void *__memset64(uint64_t *, uint32_t low, __kernel_size_t, uint32_t hi);
43static inline void *memset64(uint64_t *p, uint64_t v, __kernel_size_t n)
44{
45	return __memset64(p, v, n * 8, v >> 32);
46}
47
48/*
49 * For files that are not instrumented (e.g. mm/slub.c) we
50 * must use non-instrumented versions of the mem*
51 * functions named __memcpy() etc. All such kernel code has
52 * been tagged with KASAN_SANITIZE_file.o = n, which means
53 * that the address sanitization argument isn't passed to the
54 * compiler, and __SANITIZE_ADDRESS__ is not set. As a result
55 * these defines kick in.
56 */
57#if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)
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