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) 1996,1997,1999 Jakub Jelinek (jakub@redhat.com)
   7 */
   8
   9#ifndef __SPARC64_STRING_H__
  10#define __SPARC64_STRING_H__
  11
  12/* Really, userland/ksyms should not see any of this stuff. */
  13
  14#ifdef __KERNEL__
  15
  16#include <asm/asi.h>
  17
  18extern void *__memset(void *,int,__kernel_size_t);
  19
  20#ifndef EXPORT_SYMTAB_STROPS
  21
  22/* First the mem*() things. */
  23#define __HAVE_ARCH_MEMMOVE
  24extern void *memmove(void *, const void *, __kernel_size_t);
  25
  26#define __HAVE_ARCH_MEMCPY
  27extern void *memcpy(void *, const void *, __kernel_size_t);
  28
  29#define __HAVE_ARCH_MEMSET
  30extern void *__builtin_memset(void *,int,__kernel_size_t);
  31
  32static inline void *__constant_memset(void *s, int c, __kernel_size_t count)
  33{
  34        extern __kernel_size_t __bzero(void *, __kernel_size_t);
  35
  36        if (!c) {
  37                __bzero(s, count);
  38                return s;
  39        } else
  40                return __memset(s, c, count);
  41}
  42
  43#undef memset
  44#define memset(s, c, count) \
  45((__builtin_constant_p(count) && (count) <= 32) ? \
  46 __builtin_memset((s), (c), (count)) : \
  47 (__builtin_constant_p(c) ? \
  48  __constant_memset((s), (c), (count)) : \
  49  __memset((s), (c), (count))))
  50
  51#define __HAVE_ARCH_MEMSCAN
  52
  53#undef memscan
  54#define memscan(__arg0, __char, __arg2)                                 \
  55({                                                                      \
  56        extern void *__memscan_zero(void *, size_t);                    \
  57        extern void *__memscan_generic(void *, int, size_t);            \
  58        void *__retval, *__addr = (__arg0);                             \
  59        size_t __size = (__arg2);                                       \
  60                                                                        \
  61        if(__builtin_constant_p(__char) && !(__char))                   \
  62                __retval = __memscan_zero(__addr, __size);              \
  63        else                                                            \
  64                __retval = __memscan_generic(__addr, (__char), __size); \
  65                                                                        \
  66        __retval;                                                       \
  67})
  68
  69#define __HAVE_ARCH_MEMCMP
  70extern int memcmp(const void *,const void *,__kernel_size_t);
  71
  72/* Now the str*() stuff... */
  73#define __HAVE_ARCH_STRLEN
  74extern __kernel_size_t strlen(const char *);
  75
  76#define __HAVE_ARCH_STRNCMP
  77extern int strncmp(const char *, const char *, __kernel_size_t);
  78
  79#endif /* !EXPORT_SYMTAB_STROPS */
  80
  81#endif /* __KERNEL__ */
  82
  83#endif /* !(__SPARC64_STRING_H__) */
  84