1 .text
2 
3 .p2align 2,0x90
4 .globl mpdigdiv
5 	.type mpdigdiv, @function
6 mpdigdiv:
7 	/* Prelude */
8 	pushl %ebp
9 	movl %ebx, -4(%esp)		/* save on stack */
10 
11 	movl	8(%esp), %ebx
12 	movl	(%ebx), %eax
13 	movl	4(%ebx), %edx
14 
15 	movl	12(%esp), %ebx
16 	movl	16(%esp), %ebp
17 	xorl	%ecx, %ecx
18 	cmpl	%ebx, %edx		/* dividend >= 2^32 * divisor */
19 	jae	divovfl
20 	cmpl	%ecx, %ebx		/* divisor == 1 */
21 	je	divovfl
22 	divl	%ebx		/* AX = DX:AX/BX */
23 	movl	%eax, (%ebp)
24 	jmp done
25 
26 	/* return all 1's */
27 divovfl:
28 	notl	%ecx
29 	movl	%ecx, (%ebp)
30 
31 done:
32 	/* Postlude */
33 	movl -4(%esp), %ebx		/* restore from stack */
34 	movl %esp, %ebp
35 	leave
36 	ret
37 
38 .endmpdigdiv:
39 	.size mpdigdiv,.endmpdigdiv-mpdigdiv