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 20extern char * strcpy(char *,const char *); 21extern char * strncpy(char *,const char *, __kernel_size_t); 22extern __kernel_size_t strlen(const char *); 23extern int strcmp(const char *,const char *); 24extern int strncmp(const char *, const char *, __kernel_size_t); 25extern char * strcat(char *, const char *); 26extern void * memset(void *,int,__kernel_size_t); 27extern void * memcpy(void *,const void *,__kernel_size_t); 28extern void * memmove(void *,const void *,__kernel_size_t); 29extern int memcmp(const void *,const void *,__kernel_size_t); 30extern void * memchr(const void *,int,__kernel_size_t); 31void 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 */ 40void *__memset(void *s, int c, __kernel_size_t count); 41void *__memcpy(void *to, const void *from, __kernel_size_t n); 42void *__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 64extern void *__memset16(uint16_t *, uint16_t v, __kernel_size_t); 65extern void *__memset32(uint32_t *, uint32_t v, __kernel_size_t); 66extern void *__memset64(uint64_t *, uint64_t v, __kernel_size_t); 67 68static inline void *memset16(uint16_t *p, uint16_t v, __kernel_size_t n) 69{ 70 return __memset16(p, v, n * 2); 71} 72 73static inline void *memset32(uint32_t *p, uint32_t v, __kernel_size_t n) 74{ 75 return __memset32(p, v, n * 4); 76} 77 78static 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 88extern void *memset16(uint16_t *, uint16_t, __kernel_size_t); 89#endif 90#endif /* __KERNEL__ */ 91 92#endif /* _ASM_POWERPC_STRING_H */ 93