司和使用单DIVL指令模量（I386，AMD64） [英] Division and modulus using single divl instruction (i386, amd64)

问题描述

我试图想出内联汇编gcc的获得既有分工和模量使用单 DIVL 指令。不幸的是，我并不擅长组装。可能有人请帮助我在这？谢谢你。

I was trying to come up with inline assembly for gcc to get both division and modulus using single divl instruction. Unfortunately, I am not that good at assembly. Could someone please help me on this? Thank you.

推荐答案

是 - 一个DIVL会产生eax中商和中EDX余数。使用Intel语法，例如：

Yes -- a divl will produce the quotient in eax and the remainder in edx. Using Intel syntax, for example:

mov eax, 17
mov ebx, 3
xor edx, edx
div ebx
; eax = 5
; edx = 2

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