在32位操作系统上运行64位汇编代码 [英] Run 64 bit assembly code on a 32 bit operating system

问题描述

假定您具有运行32位操作系统的64位处理器。可以在32位程序中运行一些64位汇编指令吗？无法看到为什么不拥有64位处理器，但是计算中存在很多棘手的技术问题，尤其是操作系统。

Assuming you have a 64 bit capable processor running a 32 bit operating system. Would it be possible to run some 64 bit assembly instructions in a 32 bit program? Can't see why not if you have a 64 bit capable processor, but there are so many stingy technical issues in computing, especially the operating system.

注意我不是在谈论在32位操作系统上运行64位程序，只是使用嵌入在32位程序中的64位汇编指令。

NOTE I am not talking about running a 64 bit program on a 32 bit os, just using 64 bit assembly instructions embedded in a 32 bit program.

推荐答案

关于此，您最需要了解的是确保正确进行处理器模式转换。您需要做一些基本的工作才能从32位模式转换为64位模式（也称为长模式）。最大的问题是确保正确设置描述符表。一些更多的信息在这里：
http://www.codeproject.com/Articles/45788/The-Real-Protected-Long-mode-assembly-tutorial-for

The thing you would most need to know on this is to make sure you make your processor mode transitions correctly. You need to do some basic work to transition from 32 bit mode into 64 bit mode (also called long mode). The biggest issue would be making sure you set up the descriptor table correctly. Some more info is here: http://www.codeproject.com/Articles/45788/The-Real-Protected-Long-mode-assembly-tutorial-for

希望这会有所帮助。

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