div64u.s

来自「Minix比较全的源码」· S 代码 · 共 23 行

!	div64u() - 64 bit divided by unsigned giving unsigned long
!							Author: Kees J. Bot
!								7 Dec 1995
.sect .text
.define _div64u, _rem64u

_div64u:			! unsigned long div64u(u64_t i, unsigned j);
	xor	edx, edx
	mov	eax, 8(esp)		! i = (ih<<32) + il
	div	12(esp)			! ih = q * j + r
	mov	eax, 4(esp)
	div	12(esp)			! i / j = (q<<32) + ((r<<32) + il) / j
	ret

_rem64u:			! unsigned rem64u(u64_t i, unsigned j);
	pop	ecx
	call	_div64u
	mov	eax, edx
	jmp	ecx

!
! $PchId: div64u.ack.s,v 1.2 1996/04/11 18:59:57 philip Exp $