include/asm-sh/string.h

   1 #ifndef __ASM_SH_STRING_H
   2 #define __ASM_SH_STRING_H
   3
   4 #ifdef __KERNEL__
   5
   6 /*
   7  * Copyright (C) 1999 Niibe Yutaka
   8  * But consider these trivial functions to be public domain.
   9  */
  10
  11 #define __HAVE_ARCH_STRCPY
  12 static inline char *strcpy(char *__dest, const char *__src)
  13 {
  14         register char *__xdest = __dest;
  15         unsigned long __dummy;
  16
  17         __asm__ __volatile__("1:\n\t"
  18                              "mov.b     @%1+, %2\n\t"
  19                              "mov.b     %2, @%0\n\t"
  20                              "cmp/eq    #0, %2\n\t"
  21                              "bf/s      1b\n\t"
  22                              " add      #1, %0\n\t"
  23                              : "=r" (__dest), "=r" (__src), "=&z" (__dummy)
  24                              : "0" (__dest), "1" (__src)
  25                              : "memory", "t");
  26
  27         return __xdest;
  28 }
  29
  30 #define __HAVE_ARCH_STRNCPY
  31 static inline char *strncpy(char *__dest, const char *__src, size_t __n)
  32 {
  33         register char *__xdest = __dest;
  34         unsigned long __dummy;
  35
  36         if (__n == 0)
  37                 return __xdest;
  38
  39         __asm__ __volatile__(
  40                 "1:\n"
  41                 "mov.b  @%1+, %2\n\t"
  42                 "mov.b  %2, @%0\n\t"
  43                 "cmp/eq #0, %2\n\t"
  44                 "bt/s   2f\n\t"
  45                 " cmp/eq        %5,%1\n\t"
  46                 "bf/s   1b\n\t"
  47                 " add   #1, %0\n"
  48                 "2:"
  49                 : "=r" (__dest), "=r" (__src), "=&z" (__dummy)
  50                 : "0" (__dest), "1" (__src), "r" (__src+__n)
  51                 : "memory", "t");
  52
  53         return __xdest;
  54 }
  55
  56 #define __HAVE_ARCH_STRCMP
  57 static inline int strcmp(const char *__cs, const char *__ct)
  58 {
  59         register int __res;
  60         unsigned long __dummy;
  61
  62         __asm__ __volatile__(
  63                 "mov.b  @%1+, %3\n"
  64                 "1:\n\t"
  65                 "mov.b  @%0+, %2\n\t"
  66                 "cmp/eq #0, %3\n\t"
  67                 "bt     2f\n\t"
  68                 "cmp/eq %2, %3\n\t"
  69                 "bt/s   1b\n\t"
  70                 " mov.b @%1+, %3\n\t"
  71                 "add    #-2, %1\n\t"
  72                 "mov.b  @%1, %3\n\t"
  73                 "sub    %3, %2\n"
  74                 "2:"
  75                 : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy)
  76                 : "0" (__cs), "1" (__ct)
  77                 : "t");
  78
  79         return __res;
  80 }
  81
  82 #define __HAVE_ARCH_STRNCMP
  83 static inline int strncmp(const char *__cs, const char *__ct, size_t __n)
  84 {
  85         register int __res;
  86         unsigned long __dummy;
  87
  88         if (__n == 0)
  89                 return 0;
  90
  91         __asm__ __volatile__(
  92                 "mov.b  @%1+, %3\n"
  93                 "1:\n\t"
  94                 "mov.b  @%0+, %2\n\t"
  95                 "cmp/eq %6, %0\n\t"
  96                 "bt/s   2f\n\t"
  97                 " cmp/eq #0, %3\n\t"
  98                 "bt/s   3f\n\t"
  99                 " cmp/eq %3, %2\n\t"
 100                 "bt/s   1b\n\t"
 101                 " mov.b @%1+, %3\n\t"
 102                 "add    #-2, %1\n\t"
 103                 "mov.b  @%1, %3\n"
 104                 "2:\n\t"
 105                 "sub    %3, %2\n"
 106                 "3:"
 107                 :"=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy)
 108                 : "0" (__cs), "1" (__ct), "r" (__cs+__n)
 109                 : "t");
 110
 111         return __res;
 112 }
 113
 114 #define __HAVE_ARCH_MEMSET
 115 extern void *memset(void *__s, int __c, size_t __count);
 116
 117 #define __HAVE_ARCH_MEMCPY
 118 extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
 119
 120 #define __HAVE_ARCH_MEMMOVE
 121 extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
 122
 123 #define __HAVE_ARCH_MEMCHR
 124 extern void *memchr(const void *__s, int __c, size_t __n);
 125
 126 #define __HAVE_ARCH_STRLEN
 127 extern size_t strlen(const char *);
 128
 129 #endif /* __KERNEL__ */
 130
 131 #endif /* __ASM_SH_STRING_H */