arch/arm/include/asm/string.h

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