/* SPDX-License-Identifier: GPL-2.0 */#ifndef __ASM_ARM_STRING_H#define __ASM_ARM_STRING_H /* * We don't do inline string functions, since the * optimised inline asm versions are not small. * * The __underscore versions of some functions are for KASan to be able * to replace them with instrumented versions. */ #define __HAVE_ARCH_STRRCHRextern char * strrchr(const char * s, int c); #define __HAVE_ARCH_STRCHRextern char * strchr(const char * s, int c); #define __HAVE_ARCH_MEMCPYextern void * memcpy(void *, const void *, __kernel_size_t);extern void *__memcpy(void *dest, const void *src, __kernel_size_t n); #define __HAVE_ARCH_MEMMOVEextern void * memmove(void *, const void *, __kernel_size_t);extern void *__memmove(void *dest, const void *src, __kernel_size_t n); #define __HAVE_ARCH_MEMCHRextern void * memchr(const void *, int, __kernel_size_t); #define __HAVE_ARCH_MEMSETextern void * memset(void *, int, __kernel_size_t);extern void *__memset(void *s, int c, __kernel_size_t n); #define __HAVE_ARCH_MEMSET32extern void *__memset32(uint32_t *, uint32_t v, __kernel_size_t);static inline void *memset32(uint32_t *p, uint32_t v, __kernel_size_t n){	return __memset32(p, v, n * 4);} #define __HAVE_ARCH_MEMSET64extern void *__memset64(uint64_t *, uint32_t first, __kernel_size_t, uint32_t second);static inline void *memset64(uint64_t *p, uint64_t v, __kernel_size_t n){	union {		uint64_t val;		struct {			uint32_t first, second;		};	} word = { .val = v }; 	return __memset64(p, word.first, n * 8, word.second);} /* * For files that are not instrumented (e.g. mm/slub.c) we * must use non-instrumented versions of the mem* * functions named __memcpy() etc. All such kernel code has * been tagged with KASAN_SANITIZE_file.o = n, which means * that the address sanitization argument isn't passed to the * compiler, and __SANITIZE_ADDRESS__ is not set. As a result * these defines kick in. */#if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)#define memcpy(dst, src, len) __memcpy(dst, src, len)#define memmove(dst, src, len) __memmove(dst, src, len)#define memset(s, c, n) __memset(s, c, n) #ifndef __NO_FORTIFY#define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */#endif #endif #endif