How to test Aarch32 execution environment on Aarch64?

[Jeffrey Walton <noloader@xxxxxxxxx>]

Hi Everyone,

I have an Aarch64 dev board. I want to build out a test case for both
CRC and Crypto extensions in an Aarch32 execution environment. Its not
clear to me how to do it.

I know I can activate CRC with (Crypto is similar):

    gcc -march=armv8-a+crypto ...

My question is, what do I add for the 32-bit binary? Is it as simple
as -m32, or do I need to do something else?

Thanks in advance.

Jeff