arch/sparc/include/asm/string_32.h

   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
  18 extern void __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         extern void *__memscan_zero(void *, size_t);                            \
  44         extern 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
  57 extern int memcmp(const void *,const void *,__kernel_size_t);
  58
  59 /* Now the str*() stuff... */
  60 #define __HAVE_ARCH_STRLEN
  61 extern __kernel_size_t strlen(const char *);
  62
  63 #define __HAVE_ARCH_STRNCMP
  64 extern int strncmp(const char *, const char *, __kernel_size_t);
  65
  66 #endif /* !EXPORT_SYMTAB_STROPS */
  67
  68 #endif /* __KERNEL__ */
  69
  70 #endif /* !(__SPARC_STRING_H__) */