include/asm-alpha/string.h

   1 #ifndef __ALPHA_STRING_H__
   2 #define __ALPHA_STRING_H__
   3
   4 #ifdef __KERNEL__
   5
   6 /*
   7  * GCC of any recent vintage doesn't do stupid things with bcopy.
   8  * EGCS 1.1 knows all about expanding memcpy inline, others don't.
   9  *
  10  * Similarly for a memset with data = 0.
  11  */
  12
  13 #define __HAVE_ARCH_MEMCPY
  14 #define __HAVE_ARCH_MEMMOVE
  15 /* For backward compatibility with modules.  Unused otherwise.  */
  16 extern void * __memcpy(void *, const void *, size_t);
  17
  18 #if __GNUC__ > 2 || __GNUC_MINOR__ >= 91
  19 #define memcpy __builtin_memcpy
  20 #endif
  21
  22 #define __HAVE_ARCH_MEMSET
  23 extern void * __constant_c_memset(void *, unsigned long, size_t);
  24 extern void * __memset(void *, int, size_t);
  25
  26 #if __GNUC__ > 2 || __GNUC_MINOR__ >= 91
  27 #define memset(s, c, n)                                                     \
  28 (__builtin_constant_p(c)                                                    \
  29  ? (__builtin_constant_p(n) && (c) == 0                                     \
  30     ? __builtin_memset((s),0,(n))                                           \
  31     : __constant_c_memset((s),0x0101010101010101UL*(unsigned char)(c),(n))) \
  32  : __memset((s),(c),(n)))
  33 #else
  34 #define memset(s, c, n)                                                 \
  35 (__builtin_constant_p(c)                                                \
  36  ? __constant_c_memset((s),0x0101010101010101UL*(unsigned char)(c),(n)) \
  37  : __memset((s),(c),(n)))
  38 #endif
  39
  40 #define __HAVE_ARCH_STRCPY
  41 #define __HAVE_ARCH_STRNCPY
  42 #define __HAVE_ARCH_STRCAT
  43 #define __HAVE_ARCH_STRNCAT
  44 #define __HAVE_ARCH_STRCHR
  45 #define __HAVE_ARCH_STRRCHR
  46 #define __HAVE_ARCH_STRLEN
  47 #define __HAVE_ARCH_MEMCHR
  48
  49 /* The following routine is like memset except that it writes 16-bit
  50    aligned values.  The DEST and COUNT parameters must be even for
  51    correct operation.  */
  52
  53 #define __HAVE_ARCH_MEMSETW
  54 extern void * __memsetw(void *dest, unsigned short, size_t count);
  55
  56 #define memsetw(s, c, n)                                                 \
  57 (__builtin_constant_p(c)                                                 \
  58  ? __constant_c_memset((s),0x0001000100010001UL*(unsigned short)(c),(n)) \
  59  : __memsetw((s),(c),(n)))
  60
  61 extern int strcasecmp(const char *, const char *);
  62
  63 #endif /* __KERNEL__ */
  64
  65 #endif /* __ALPHA_STRING_H__ */