如何告诉GCC生成16位code实模式 [英] How to tell GCC to generate 16-bit code for real mode

问题描述

我写实模式功能，这应该与stackframes等正常功能，但它应该使用ESP％SP代替％。是否有某种方式做到这一点？

I am writing real mode function, which should be normal function with stackframes and so, but it should use %sp instead of %esp. Is there some way to do it?

推荐答案

据我所知，GCC不支持代code的16位x86。对于传统的引导程序和类似用途的，你应该用汇编语言编写一个小存根将CPU的32位模式，并通过关闭运行到32位code。对于其他的目的，你真的不应该写16位code。

As far as I know, GCC does not support generation of code for 16-bit x86. For legacy bootloaders and similar purposes, you should write a small stub in assembly language to put the cpu in 32-bit mode and pass off execution to 32-bit code. For other purposes you really shouldn't be writing 16-bit code.

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