LXR linux/arch/sparc/include/asm/string

   1/*
   2 * string.h: External definitions for optimized assembly string
   3 *           routines for the Linux Kernel.
   4 *
   5 * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu)
   6 * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
   7 */
   8
   9#ifndef __SPARC_STRING_H__
  10#define __SPARC_STRING_H__
  11
  12#include <asm/page.h>
  13
  14/* Really, userland/ksyms should not see any of this stuff. */
  15
  16#ifdef __KERNEL__
  17
  18void __memmove(void *,const void *,__kernel_size_t);
  19
  20#ifndef EXPORT_SYMTAB_STROPS
  21
  22/* First the mem*() things. */
  23#define __HAVE_ARCH_MEMMOVE
  24#undef memmove
  25#define memmove(_to, _from, _n) \
  26({ \
  27        void *_t = (_to); \
  28        __memmove(_t, (_from), (_n)); \
  29        _t; \
  30})
  31
  32#define __HAVE_ARCH_MEMCPY
  33#define memcpy(t, f, n) __builtin_memcpy(t, f, n)
  34
  35#define __HAVE_ARCH_MEMSET
  36#define memset(s, c, count) __builtin_memset(s, c, count)
  37
  38#define __HAVE_ARCH_MEMSCAN
  39
  40#undef memscan
  41#define memscan(__arg0, __char, __arg2)                                         \
  42({                                                                              \
  43        void *__memscan_zero(void *, size_t);                                   \
  44        void *__memscan_generic(void *, int, size_t);                           \
  45        void *__retval, *__addr = (__arg0);                                     \
  46        size_t __size = (__arg2);                                               \
  47                                                                                \
  48        if(__builtin_constant_p(__char) && !(__char))                           \
  49                __retval = __memscan_zero(__addr, __size);                      \
  50        else                                                                    \
  51                __retval = __memscan_generic(__addr, (__char), __size);         \
  52                                                                                \
  53        __retval;                                                               \
  54})
  55
  56#define __HAVE_ARCH_MEMCMP
  57int memcmp(const void *,const void *,__kernel_size_t);
  58
  59/* Now the str*() stuff... */
  60#define __HAVE_ARCH_STRLEN
  61__kernel_size_t strlen(const char *);
  62
  63#define __HAVE_ARCH_STRNCMP
  64int strncmp(const char *, const char *, __kernel_size_t);
  65
  66#endif /* !EXPORT_SYMTAB_STROPS */
  67
  68#endif /* __KERNEL__ */
  69
  70#endif /* !(__SPARC_STRING_H__) */
  71