arch/x86_64/lib/memmove.c

   1 /* Normally compiler builtins are used, but sometimes the compiler calls out
   2    of line code. Based on asm-i386/string.h.
   3  */
   4 #define _STRING_C
   5 #include <linux/string.h>
   6
   7 #undef memmove
   8 void *memmove(void * dest,const void *src,size_t count)
   9 {
  10         if (dest < src) {
  11                 __inline_memcpy(dest,src,count);
  12         } else {
  13                 char *p = (char *) dest + count;
  14                 char *s = (char *) src + count;
  15                 while (count--)
  16                         *--p = *--s;
  17         }
  18         return dest;
  19 }