.sect .text; .sect .rom; .sect .data; .sect .bss.define	.and	! #bytes in ecx	! save edi; it might be a register variable	.sect .text.and:	pop	ebx		! return address	mov	edx,edi	mov	edi,esp	add	edi,ecx	sar	ecx,21:	pop	eax	and	eax,(edi)	stos	loop	1b	mov	edi,edx	jmp	ebx