LXR uboot/arch/sh/include/asm/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 * from linux kernel code.
   9 */
  10
  11#ifdef __KERNEL__               /* only set these up for kernel code */
  12
  13#define __HAVE_ARCH_STRCPY
  14static inline char *strcpy(char *__dest, const char *__src)
  15{
  16        register char *__xdest = __dest;
  17        unsigned long __dummy;
  18
  19        __asm__ __volatile__("1:\n\t"
  20                             "mov.b     @%1+, %2\n\t"
  21                             "mov.b     %2, @%0\n\t"
  22                             "cmp/eq    #0, %2\n\t"
  23                             "bf/s      1b\n\t"
  24                             " add      #1, %0\n\t"
  25                             : "=r" (__dest), "=r" (__src), "=&z" (__dummy)
  26                             : "0" (__dest), "1" (__src)
  27                             : "memory", "t");
  28
  29        return __xdest;
  30}
  31
  32#define __HAVE_ARCH_STRNCPY
  33static inline char *strncpy(char *__dest, const char *__src, size_t __n)
  34{
  35        register char *__xdest = __dest;
  36        unsigned long __dummy;
  37
  38        if (__n == 0)
  39                return __xdest;
  40
  41        __asm__ __volatile__(
  42                "1:\n"
  43                "mov.b  @%1+, %2\n\t"
  44                "mov.b  %2, @%0\n\t"
  45                "cmp/eq #0, %2\n\t"
  46                "bt/s   2f\n\t"
  47                " cmp/eq        %5,%1\n\t"
  48                "bf/s   1b\n\t"
  49                " add   #1, %0\n"
  50                "2:"
  51                : "=r" (__dest), "=r" (__src), "=&z" (__dummy)
  52                : "0" (__dest), "1" (__src), "r" (__src+__n)
  53                : "memory", "t");
  54
  55        return __xdest;
  56}
  57
  58#define __HAVE_ARCH_STRCMP
  59static inline int strcmp(const char *__cs, const char *__ct)
  60{
  61        register int __res;
  62        unsigned long __dummy;
  63
  64        __asm__ __volatile__(
  65                "mov.b  @%1+, %3\n"
  66                "1:\n\t"
  67                "mov.b  @%0+, %2\n\t"
  68                "cmp/eq #0, %3\n\t"
  69                "bt     2f\n\t"
  70                "cmp/eq %2, %3\n\t"
  71                "bt/s   1b\n\t"
  72                " mov.b @%1+, %3\n\t"
  73                "add    #-2, %1\n\t"
  74                "mov.b  @%1, %3\n\t"
  75                "sub    %3, %2\n"
  76                "2:"
  77                : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy)
  78                : "0" (__cs), "1" (__ct)
  79                : "t");
  80
  81        return __res;
  82}
  83
  84#define __HAVE_ARCH_STRNCMP
  85static inline int strncmp(const char *__cs, const char *__ct, size_t __n)
  86{
  87        register int __res;
  88        unsigned long __dummy;
  89
  90        if (__n == 0)
  91                return 0;
  92
  93        __asm__ __volatile__(
  94                "mov.b  @%1+, %3\n"
  95                "1:\n\t"
  96                "mov.b  @%0+, %2\n\t"
  97                "cmp/eq %6, %0\n\t"
  98                "bt/s   2f\n\t"
  99                " cmp/eq #0, %3\n\t"
 100                "bt/s   3f\n\t"
 101                " cmp/eq %3, %2\n\t"
 102                "bt/s   1b\n\t"
 103                " mov.b @%1+, %3\n\t"
 104                "add    #-2, %1\n\t"
 105                "mov.b  @%1, %3\n"
 106                "2:\n\t"
 107                "sub    %3, %2\n"
 108                "3:"
 109                :"=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy)
 110                : "0" (__cs), "1" (__ct), "r" (__cs+__n)
 111                : "t");
 112
 113        return __res;
 114}
 115
 116#undef __HAVE_ARCH_MEMSET
 117extern void *memset(void *__s, int __c, size_t __count);
 118
 119#undef __HAVE_ARCH_MEMCPY
 120extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
 121
 122#undef __HAVE_ARCH_MEMMOVE
 123extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
 124
 125#undef __HAVE_ARCH_MEMCHR
 126extern void *memchr(const void *__s, int __c, size_t __n);
 127
 128#undef __HAVE_ARCH_STRLEN
 129extern size_t strlen(const char *);
 130
 131/* arch/sh/lib/strcasecmp.c */
 132extern int strcasecmp(const char *, const char *);
 133
 134#else                           /* KERNEL */
 135
 136/*
 137 * let user libraries deal with these,
 138 * IMHO the kernel has no place defining these functions for user apps
 139 */
 140
 141#define __HAVE_ARCH_STRCPY      1
 142#define __HAVE_ARCH_STRNCPY     1
 143#define __HAVE_ARCH_STRCAT      1
 144#define __HAVE_ARCH_STRNCAT     1
 145#define __HAVE_ARCH_STRCMP      1
 146#define __HAVE_ARCH_STRNCMP     1
 147#define __HAVE_ARCH_STRNICMP    1
 148#define __HAVE_ARCH_STRCHR      1
 149#define __HAVE_ARCH_STRRCHR     1
 150#define __HAVE_ARCH_STRSTR      1
 151#define __HAVE_ARCH_STRLEN      1
 152#define __HAVE_ARCH_STRNLEN     1
 153#define __HAVE_ARCH_MEMSET      1
 154#define __HAVE_ARCH_MEMCPY      1
 155#define __HAVE_ARCH_MEMMOVE     1
 156#define __HAVE_ARCH_MEMSCAN     1
 157#define __HAVE_ARCH_MEMCMP      1
 158#define __HAVE_ARCH_MEMCHR      1
 159#define __HAVE_ARCH_STRTOK      1
 160
 161#endif /* KERNEL */
 162#endif /* __ASM_SH_STRING_H */
 163