io_outsb.s

minix3的源代码

!	outsb() - Output a byte array		Author: Kees J. Bot
!								18 Mar 1996
!	void outsb(U16_t port, void *buf, size_t count);

.sect .text
.define _outsb
_outsb:
	push	ebp
	mov	ebp, esp
	cld
	push	esi
	mov	edx, 8(ebp)		! port
	mov	esi, 12(ebp)		! buf
	mov	ecx, 16(ebp)		! byte count
   rep	outsb				! output many bytes
	pop	esi
	pop	ebp
	ret