Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
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
10#define __HAVE_ARCH_STRRCHR
11extern char * strrchr(const char * s, int c);
12
13#define __HAVE_ARCH_STRCHR
14extern char * strchr(const char * s, int c);
15
16#define __HAVE_ARCH_MEMCPY
17extern void * memcpy(void *, const void *, __kernel_size_t);
18
19#define __HAVE_ARCH_MEMMOVE
20extern void * memmove(void *, const void *, __kernel_size_t);
21
22#define __HAVE_ARCH_MEMCHR
23extern void * memchr(const void *, int, __kernel_size_t);
24
25#define __HAVE_ARCH_MEMSET
26extern void * memset(void *, int, __kernel_size_t);
27
28#define __HAVE_ARCH_MEMSET32
29extern void *__memset32(uint32_t *, uint32_t v, __kernel_size_t);
30static inline void *memset32(uint32_t *p, uint32_t v, __kernel_size_t n)
31{
32 return __memset32(p, v, n * 4);
33}
34
35#define __HAVE_ARCH_MEMSET64
36extern void *__memset64(uint64_t *, uint32_t low, __kernel_size_t, uint32_t hi);
37static inline void *memset64(uint64_t *p, uint64_t v, __kernel_size_t n)
38{
39 return __memset64(p, v, n * 8, v >> 32);
40}
41
42extern void __memzero(void *ptr, __kernel_size_t n);
43
44#define memset(p,v,n) \
45 ({ \
46 void *__p = (p); size_t __n = n; \
47 if ((__n) != 0) { \
48 if (__builtin_constant_p((v)) && (v) == 0) \
49 __memzero((__p),(__n)); \
50 else \
51 memset((__p),(v),(__n)); \
52 } \
53 (__p); \
54 })
55
56#endif