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