LXR uboot/arch/nds32/include/asm/string.h

   1/*
   2 * Copyright (C) 2011 Andes Technology Corporation
   3 * Copyright (C) 2010 Shawn Lin (nobuhiro@andestech.com)
   4 * Copyright (C) 2011 Macpaul Lin (macpaul@andestech.com)
   5 *
   6 * This file is subject to the terms and conditions of the GNU General Public
   7 * License.  See the file "COPYING" in the main directory of this archive
   8 * for more details.
   9 */
  10
  11#ifndef __ASM_NDS_STRING_H
  12#define __ASM_NDS_STRING_H
  13
  14/*
  15 * We don't do inline string functions, since the
  16 * optimised inline asm versions are not small.
  17 */
  18
  19#undef __HAVE_ARCH_STRRCHR
  20extern char *strrchr(const char *s, int c);
  21
  22#undef __HAVE_ARCH_STRCHR
  23extern char *strchr(const char *s, int c);
  24
  25#undef __HAVE_ARCH_MEMCPY
  26extern void *memcpy(void *, const void *, __kernel_size_t);
  27
  28#undef __HAVE_ARCH_MEMMOVE
  29extern void *memmove(void *, const void *, __kernel_size_t);
  30
  31#undef __HAVE_ARCH_MEMCHR
  32extern void *memchr(const void *, int, __kernel_size_t);
  33
  34#undef __HAVE_ARCH_MEMZERO
  35#undef __HAVE_ARCH_MEMSET
  36extern void *memset(void *, int, __kernel_size_t);
  37
  38#ifdef CONFIG_MARCO_MEMSET
  39extern 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
  54extern void memzero(void *ptr, __kernel_size_t n);
  55#endif
  56
  57#endif /* __ASM_NDS_STRING_H */
  58