#include	<lib9.h> /* for testing only */void*memcpy(void *a1, void *a2, ulong n){	return memmove(a1, a2, n);} void*memmove(void *a1, void *a2, ulong n){	int m = (int)n;	uchar *s, *d;		d = a1;	s = a2;	if(d > s){		s += m;		d += m;		while(--m >= 0)			*--d = *--s;	}	else{		while(--m >= 0)			*d++ = *s++;	}	return a1;} /*voidmemset(void *a1, int c, ulong n){	int m = (int)n;	uchar *d; 	d = a1;	while(--m >= 0)		*d++ = c;}*/