LXR linux/arch/m68k/include/asm/string

   1#ifndef _M68KNOMMU_STRING_H_
   2#define _M68KNOMMU_STRING_H_
   3
   4#ifdef __KERNEL__ /* only set these up for kernel code */
   5
   6#include <asm/setup.h>
   7#include <asm/page.h>
   8
   9#define __HAVE_ARCH_STRCPY
  10static inline char * strcpy(char * dest,const char *src)
  11{
  12  char *xdest = dest;
  13
  14  __asm__ __volatile__
  15       ("1:\tmoveb %1@+,%0@+\n\t"
  16        "jne 1b"
  17        : "=a" (dest), "=a" (src)
  18        : "0" (dest), "1" (src) : "memory");
  19  return xdest;
  20}
  21
  22#define __HAVE_ARCH_STRNCPY
  23static inline char * strncpy(char *dest, const char *src, size_t n)
  24{
  25  char *xdest = dest;
  26
  27  if (n == 0)
  28    return xdest;
  29
  30  __asm__ __volatile__
  31       ("1:\tmoveb %1@+,%0@+\n\t"
  32        "jeq 2f\n\t"
  33        "subql #1,%2\n\t"
  34        "jne 1b\n\t"
  35        "2:"
  36        : "=a" (dest), "=a" (src), "=d" (n)
  37        : "0" (dest), "1" (src), "2" (n)
  38        : "memory");
  39  return xdest;
  40}
  41
  42
  43#ifndef CONFIG_COLDFIRE
  44
  45#define __HAVE_ARCH_STRCMP
  46static inline int strcmp(const char * cs,const char * ct)
  47{
  48  char __res;
  49
  50  __asm__
  51       ("1:\tmoveb %0@+,%2\n\t" /* get *cs */
  52        "cmpb %1@+,%2\n\t"      /* compare a byte */
  53        "jne  2f\n\t"           /* not equal, break out */
  54        "tstb %2\n\t"           /* at end of cs? */
  55        "jne  1b\n\t"           /* no, keep going */
  56        "jra  3f\n\t"           /* strings are equal */
  57        "2:\tsubb %1@-,%2\n\t"  /* *cs - *ct */
  58        "3:"
  59        : "=a" (cs), "=a" (ct), "=d" (__res)
  60        : "0" (cs), "1" (ct));
  61
  62  return __res;
  63}
  64
  65#define __HAVE_ARCH_STRNCMP
  66static inline int strncmp(const char * cs,const char * ct,size_t count)
  67{
  68  char __res;
  69
  70  if (!count)
  71    return 0;
  72  __asm__
  73       ("1:\tmovb %0@+,%3\n\t"          /* get *cs */
  74        "cmpb   %1@+,%3\n\t"            /* compare a byte */
  75        "jne    3f\n\t"                 /* not equal, break out */
  76        "tstb   %3\n\t"                 /* at end of cs? */
  77        "jeq    4f\n\t"                 /* yes, all done */
  78        "subql  #1,%2\n\t"              /* no, adjust count */
  79        "jne    1b\n\t"                 /* more to do, keep going */
  80        "2:\tmoveq #0,%3\n\t"           /* strings are equal */
  81        "jra    4f\n\t"
  82        "3:\tsubb %1@-,%3\n\t"          /* *cs - *ct */
  83        "4:"
  84        : "=a" (cs), "=a" (ct), "=d" (count), "=d" (__res)
  85        : "0" (cs), "1" (ct), "2" (count));
  86  return __res;
  87}
  88
  89#endif /* CONFIG_COLDFIRE */
  90
  91#define __HAVE_ARCH_MEMSET
  92extern void * memset(void * s, int c, size_t count);
  93
  94#define __HAVE_ARCH_MEMCPY
  95extern void * memcpy(void *d, const void *s, size_t count);
  96
  97#else /* KERNEL */
  98
  99/*
 100 *      let user libraries deal with these,
 101 *      IMHO the kernel has no place defining these functions for user apps
 102 */
 103
 104#define __HAVE_ARCH_STRCPY 1
 105#define __HAVE_ARCH_STRNCPY 1
 106#define __HAVE_ARCH_STRCAT 1
 107#define __HAVE_ARCH_STRNCAT 1
 108#define __HAVE_ARCH_STRCMP 1
 109#define __HAVE_ARCH_STRNCMP 1
 110#define __HAVE_ARCH_STRNICMP 1
 111#define __HAVE_ARCH_STRCHR 1
 112#define __HAVE_ARCH_STRRCHR 1
 113#define __HAVE_ARCH_STRSTR 1
 114#define __HAVE_ARCH_STRLEN 1
 115#define __HAVE_ARCH_STRNLEN 1
 116#define __HAVE_ARCH_MEMSET 1
 117#define __HAVE_ARCH_MEMCPY 1
 118#define __HAVE_ARCH_MEMMOVE 1
 119#define __HAVE_ARCH_MEMSCAN 1
 120#define __HAVE_ARCH_MEMCMP 1
 121#define __HAVE_ARCH_MEMCHR 1
 122#define __HAVE_ARCH_STRTOK 1
 123
 124#endif /* KERNEL */
 125
 126#endif /* _M68K_STRING_H_ */
 127