LXR linux/include/asm-arm/string.h

   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#define __HAVE_ARCH_STRRCHR
  10extern char * strrchr(const char * s, int c);
  11
  12#define __HAVE_ARCH_STRCHR
  13extern char * strchr(const char * s, int c);
  14
  15#define __HAVE_ARCH_MEMCPY
  16extern void * memcpy(void *, const void *, __kernel_size_t);
  17
  18#define __HAVE_ARCH_MEMMOVE
  19extern void * memmove(void *, const void *, __kernel_size_t);
  20
  21#define __HAVE_ARCH_MEMCHR
  22extern void * memchr(const void *, int, __kernel_size_t);
  23
  24#define __HAVE_ARCH_MEMZERO
  25#define __HAVE_ARCH_MEMSET
  26extern void * memset(void *, int, __kernel_size_t);
  27
  28extern void __memzero(void *ptr, __kernel_size_t n);
  29
  30#define memset(p,v,n)                                                   \
  31        ({                                                              \
  32                void *__p = (p); size_t __n = n;                        \
  33                if ((__n) != 0) {                                       \
  34                        if (__builtin_constant_p((v)) && (v) == 0)      \
  35                                __memzero((__p),(__n));                 \
  36                        else                                            \
  37                                memset((__p),(v),(__n));                \
  38                }                                                       \
  39                (__p);                                                  \
  40        })
  41
  42#define memzero(p,n)                                                    \
  43        ({                                                              \
  44                void *__p = (p); size_t __n = n;                        \
  45                if ((__n) != 0)                                         \
  46                        __memzero((__p),(__n));                         \
  47                (__p);                                                  \
  48         })
  49
  50#endif
  51