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 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 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 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