include/asm-sh/string.h

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