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string_32.h

#ifndef __ASM_SH_STRING_H
#define __ASM_SH_STRING_H

#ifdef __KERNEL__

/*
 * Copyright (C) 1999 Niibe Yutaka
 * But consider these trivial functions to be public domain.
 */

#define __HAVE_ARCH_STRCPY
static inline char *strcpy(char *__dest, const char *__src)
{
      register char *__xdest = __dest;
      unsigned long __dummy;

      __asm__ __volatile__("1:\n\t"
                       "mov.b @%1+, %2\n\t"
                       "mov.b %2, @%0\n\t"
                       "cmp/eq      #0, %2\n\t"
                       "bf/s  1b\n\t"
                       " add  #1, %0\n\t"
                       : "=r" (__dest), "=r" (__src), "=&z" (__dummy)
                       : "0" (__dest), "1" (__src)
                       : "memory", "t");

      return __xdest;
}

#define __HAVE_ARCH_STRNCPY
static inline char *strncpy(char *__dest, const char *__src, size_t __n)
{
      register char *__xdest = __dest;
      unsigned long __dummy;

      if (__n == 0)
            return __xdest;

      __asm__ __volatile__(
            "1:\n"
            "mov.b      @%1+, %2\n\t"
            "mov.b      %2, @%0\n\t"
            "cmp/eq     #0, %2\n\t"
            "bt/s 2f\n\t"
            " cmp/eq    %5,%1\n\t"
            "bf/s 1b\n\t"
            " add #1, %0\n"
            "2:"
            : "=r" (__dest), "=r" (__src), "=&z" (__dummy)
            : "0" (__dest), "1" (__src), "r" (__src+__n)
            : "memory", "t");

      return __xdest;
}

#define __HAVE_ARCH_STRCMP
static inline int strcmp(const char *__cs, const char *__ct)
{
      register int __res;
      unsigned long __dummy;

      __asm__ __volatile__(
            "mov.b      @%1+, %3\n"
            "1:\n\t"
            "mov.b      @%0+, %2\n\t"
            "cmp/eq #0, %3\n\t"
            "bt   2f\n\t"
            "cmp/eq %2, %3\n\t"
            "bt/s 1b\n\t"
            " mov.b     @%1+, %3\n\t"
            "add  #-2, %1\n\t"
            "mov.b      @%1, %3\n\t"
            "sub  %3, %2\n"
            "2:"
            : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy)
            : "0" (__cs), "1" (__ct)
            : "t");

      return __res;
}

#define __HAVE_ARCH_STRNCMP
static inline int strncmp(const char *__cs, const char *__ct, size_t __n)
{
      register int __res;
      unsigned long __dummy;

      if (__n == 0)
            return 0;

      __asm__ __volatile__(
            "mov.b      @%1+, %3\n"
            "1:\n\t"
            "mov.b      @%0+, %2\n\t"
            "cmp/eq %6, %0\n\t"
            "bt/s 2f\n\t"
            " cmp/eq #0, %3\n\t"
            "bt/s 3f\n\t"
            " cmp/eq %3, %2\n\t"
            "bt/s 1b\n\t"
            " mov.b     @%1+, %3\n\t"
            "add  #-2, %1\n\t"
            "mov.b      @%1, %3\n"
            "2:\n\t"
            "sub  %3, %2\n"
            "3:"
            :"=r" (__cs), "=r" (__ct), "=&r" (__res), "=&z" (__dummy)
            : "0" (__cs), "1" (__ct), "r" (__cs+__n)
            : "t");

      return __res;
}

#define __HAVE_ARCH_MEMSET
extern void *memset(void *__s, int __c, size_t __count);

#define __HAVE_ARCH_MEMCPY
extern void *memcpy(void *__to, __const__ void *__from, size_t __n);

#define __HAVE_ARCH_MEMMOVE
extern void *memmove(void *__dest, __const__ void *__src, size_t __n);

#define __HAVE_ARCH_MEMCHR
extern void *memchr(const void *__s, int __c, size_t __n);

#define __HAVE_ARCH_STRLEN
extern size_t strlen(const char *);

#endif /* __KERNEL__ */

#endif /* __ASM_SH_STRING_H */

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