1 #ifndef __ASM_ARM_STRING_H 2 #define __ASM_ARM_STRING_H 3 4 /* 5 * We don't do inline string functions, since the 6 * optimised inline asm versions are not small. 7 */ 8 9 #undef __HAVE_ARCH_STRRCHR 10 extern char * strrchr(const char * s, int c); 11 12 #undef __HAVE_ARCH_STRCHR 13 extern char * strchr(const char * s, int c); 14 15 #if CONFIG_IS_ENABLED(USE_ARCH_MEMCPY) 16 #define __HAVE_ARCH_MEMCPY 17 #endif 18 extern void * memcpy(void *, const void *, __kernel_size_t); 19 20 #if CONFIG_IS_ENABLED(USE_ARCH_MEMMOVE) 21 #define __HAVE_ARCH_MEMMOVE 22 #else 23 #undef __HAVE_ARCH_MEMMOVE 24 #endif 25 extern void * memmove(void *, const void *, __kernel_size_t); 26 27 #undef __HAVE_ARCH_MEMCHR 28 extern void * memchr(const void *, int, __kernel_size_t); 29 30 #undef __HAVE_ARCH_MEMZERO 31 #if CONFIG_IS_ENABLED(USE_ARCH_MEMSET) 32 #define __HAVE_ARCH_MEMSET 33 #endif 34 extern void * memset(void *, int, __kernel_size_t); 35 36 #if 0 37 extern void __memzero(void *ptr, __kernel_size_t n); 38 39 #define memset(p,v,n) \ 40 ({ \ 41 if ((n) != 0) { \ 42 if (__builtin_constant_p((v)) && (v) == 0) \ 43 __memzero((p),(n)); \ 44 else \ 45 memset((p),(v),(n)); \ 46 } \ 47 (p); \ 48 }) 49 50 #define memzero(p,n) ({ if ((n) != 0) __memzero((p),(n)); (p); }) 51 #else 52 extern void memzero(void *ptr, __kernel_size_t n); 53 #endif 54 55 #endif 56