是否可以在具有32位处理器的计算机上运行64位代码？ [英] is it possible to run 64 bit code in a machine with 32 bit processor?

问题描述

我到处搜寻以获得这些问题的答案。

I have searched around to get the answers for these questions. but not much luck.

1. 是否可以运行 32位在具有 64位处理器的计算机中编写代码？

1. Is it possible to run 32-bit code in a machine with 64-bit processor?

答案似乎是肯定的。但是在性能问题上存在争议，因为 32位在处理器上未使用。

The answer seems to be yes. but there is a debate on performance issues, since 32-bits are left unused on the processor.

现在我的问题反之亦然，是否有可能在 32位 64位代码>处理器？

Now my question is vice-versa, Is it possible to run 64-bit code in a machine with 32-bit processor?

据我所知，答案是否定的，因为该代码旨在在 64位
将使用 64进程registars ，但 32位机器仅提供32个进程。

from my little understanding, the answer is NO, because the code designed to run on 64-bit will be using 64-process registars but the 32-bit machine offers only 32.

另一方面，我发现此链接。据此，可以在32位计算机上编译64位代码。但是我不清楚如何做到这一点，再加上在 32位机器上进行编译是否还能保证在上执行

On the otherhand, I found this link. According this, it is possible to compile 64-bit code on a 32-bit machine. But I am not clear on how this is done plus if compiling on a 32-bit machine will also guaranteeexecution on the same.

感谢您的帮助

推荐答案

是否可以在具有64位处理器的计算机上运行32位代码？

Is it possible to run 32-bit code in a machine with 64-bit processor?

是。在Windows中，可以通过 WOW64 处理，例如，

Yes. This is handled in Windows via WOW64, for example.

现在我的问题反之亦然，是否可以在具有32位处理器的计算机上运行64位代码？

Now my question is vice-versa, Is it possible to run 64-bit code in a machine with 32-bit processor?

否。 64位代码将需要64位指令集，而32位处理器将无法使用该指令集。

No. 64bit code would require a 64 bit instruction set, which won't be available on a 32 bit processor.

据此，可能在32位计算机上编译64位代码。

According this, it is possible to compile 64-bit code on a 32-bit machine.

您可以编译用于其他体系结构的代码，但不能执行。这样一来，您可以为当前执行平台以外的其他平台构建代码，但是无法执行。

You can compile code for other architectures, but not execute it. This lets you build code for different platforms than the currently executing platform, but executing it will not work.

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