1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_POWERPC_STRING_H
3 #define _ASM_POWERPC_STRING_H
4
5 #ifdef __KERNEL__
6
7 #ifndef CONFIG_KASAN
8 #define __HAVE_ARCH_STRNCPY
9 #define __HAVE_ARCH_STRNCMP
10 #define __HAVE_ARCH_MEMCHR
11 #define __HAVE_ARCH_MEMCMP
12 #define __HAVE_ARCH_MEMSET16
13 #endif
14
15 #define __HAVE_ARCH_MEMSET
16 #define __HAVE_ARCH_MEMCPY
17 #define __HAVE_ARCH_MEMMOVE
18 #define __HAVE_ARCH_MEMCPY_FLUSHCACHE
19
20 extern char * strcpy(char *,const char *);
21 extern char * strncpy(char *,const char *, __kernel_size_t);
22 extern __kernel_size_t strlen(const char *);
23 extern int strcmp(const char *,const char *);
24 extern int strncmp(const char *, const char *, __kernel_size_t);
25 extern char * strcat(char *, const char *);
26 extern void * memset(void *,int,__kernel_size_t);
27 extern void * memcpy(void *,const void *,__kernel_size_t);
28 extern void * memmove(void *,const void *,__kernel_size_t);
29 extern int memcmp(const void *,const void *,__kernel_size_t);
30 extern void * memchr(const void *,int,__kernel_size_t);
31 void memcpy_flushcache(void *dest, const void *src, size_t size);
32
33 #ifdef CONFIG_KASAN
34 /* __mem variants are used by KASAN to implement instrumented meminstrinsics. */
35 #ifdef CONFIG_CC_HAS_KASAN_MEMINTRINSIC_PREFIX
36 #define __memset memset
37 #define __memcpy memcpy
38 #define __memmove memmove
39 #else /* CONFIG_CC_HAS_KASAN_MEMINTRINSIC_PREFIX */
40 void *__memset(void *s, int c, __kernel_size_t count);
41 void *__memcpy(void *to, const void *from, __kernel_size_t n);
42 void *__memmove(void *to, const void *from, __kernel_size_t n);
43 #ifndef __SANITIZE_ADDRESS__
44 /*
45 * For files that are not instrumented (e.g. mm/slub.c) we
46 * should use not instrumented version of mem* functions.
47 */
48 #define memcpy(dst, src, len) __memcpy(dst, src, len)
49 #define memmove(dst, src, len) __memmove(dst, src, len)
50 #define memset(s, c, n) __memset(s, c, n)
51
52 #ifndef __NO_FORTIFY
53 #define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */
54 #endif
55 #endif /* !__SANITIZE_ADDRESS__ */
56 #endif /* CONFIG_CC_HAS_KASAN_MEMINTRINSIC_PREFIX */
57 #endif /* CONFIG_KASAN */
58
59 #ifdef CONFIG_PPC64
60 #ifndef CONFIG_KASAN
61 #define __HAVE_ARCH_MEMSET32
62 #define __HAVE_ARCH_MEMSET64
63
64 extern void *__memset16(uint16_t *, uint16_t v, __kernel_size_t);
65 extern void *__memset32(uint32_t *, uint32_t v, __kernel_size_t);
66 extern void *__memset64(uint64_t *, uint64_t v, __kernel_size_t);
67
memset16(uint16_t * p,uint16_t v,__kernel_size_t n)68 static inline void *memset16(uint16_t *p, uint16_t v, __kernel_size_t n)
69 {
70 return __memset16(p, v, n * 2);
71 }
72
memset32(uint32_t * p,uint32_t v,__kernel_size_t n)73 static inline void *memset32(uint32_t *p, uint32_t v, __kernel_size_t n)
74 {
75 return __memset32(p, v, n * 4);
76 }
77
memset64(uint64_t * p,uint64_t v,__kernel_size_t n)78 static inline void *memset64(uint64_t *p, uint64_t v, __kernel_size_t n)
79 {
80 return __memset64(p, v, n * 8);
81 }
82 #endif
83 #else
84 #ifndef CONFIG_KASAN
85 #define __HAVE_ARCH_STRLEN
86 #endif
87
88 extern void *memset16(uint16_t *, uint16_t, __kernel_size_t);
89 #endif
90 #endif /* __KERNEL__ */
91
92 #endif /* _ASM_POWERPC_STRING_H */
93