MIPS $ GP寄存器

问题描述

使用$gp寄存器存储值是否存在危险?我想我的问题是$gp的真正功能是什么，它是否以某种方式在后台调用，所以如果我使用它，事情可能会变得非常错误?

解决方案

$ gp寄存器指向全局区域. 公约表示您应在编写函数时将其存储(请参阅.cprestore). /p>

如果您需要使用它(老实说，看不到原因)，请记住以下几点:

我不确定，但是您可以忘记PIC代码.

Is there a danger in using the $gp register to store a value? I guess my question is what is the true functionality of $gp and is it invoked behind-the-scenes somehow so that if I were to use it, things could go very very wrong?

解决方案

Well, $gp register points to the global area. Convention indicates that you should store it when you write a function (see .cprestore).

If you need to use it (honestly, cant see why), remeber these things:

Also, i'm not sure, but you can forget about PIC code.

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