如何打印一个寄存器的内容在x86汇编到控制台？我运行Linux [英] How do I print the contents of a register in x86 assembly to the console? I'm running Linux

问题描述

我知道如何打印字符串，但上打印整数的文档是出奇的稀少。我甚至不知道我的问题是正确的。

I know how to print a string, but the documentation on printing integers is surprisingly scarce. I'm not even sure if my question is right.

推荐答案

如果你能对C库链接，你可以调用的printf 功能。在大多数x86系统，可变参数的函数使用 CDECL 调用约定 - 参数推右堆栈上向左（所以，第一寄存器的值，则包含字符串％d个），和你有调用后清理堆栈（添加到％ESP ）。

If you can link against the C library, you could call the printf function. On most x86 systems, variadic functions use the cdecl calling convention - arguments are pushed on the stack from right to left (so, first the register value, then the string containing %d), and you have to clean up the stack (add to %esp) after the call.

有关详细信息，请注明你在（什么系统，如果你不能对C库链接，你需要手动生成字符串将其转换成你想在打印任何基地。

For more details please specify what system you're on (and if you can't link against the C library, you'll need to generate a string by hand to convert it into whatever base you want to print in.

这篇关于如何打印一个寄存器的内容在x86汇编到控制台？我运行Linux的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！