linux/arch/x86_64/lib/memmove.c

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/* Normally compiler builtins are used, but sometimes the compiler calls out
of line code. Based on asm-i386/string.h.
*/
#define _STRING_C
#include <linux/string.h>
#include <linux/module.h>
#undef memmove
void *memmove(void * dest,const void *src,size_t count)
{
if (dest < src) {
return memcpy(dest,src,count);
} else {
char *p = (char *) dest + count;
char *s = (char *) src + count;
while (count--)
*--p = *--s;
}
return dest;
}
EXPORT_SYMBOL(memmove);