[PATCH 1/2] msvcrt: Back up and restore the FPU state in setjmp/longjmp on arm

[Alexandre Julliard]

Martin Storsjö <martin at martin.st> writes:

> Yes - __attribute__((pcs("aapcs-vfp"))) seems to be what would be
> required. I've only tested wine in hardfloat linux environments, which
> is why I haven't thought about the issue until now.

Indeed, that looks like what we need.

> However, in the build configuration you're running, where VFP
> instructions aren't allowed at all, this wouldn't work. You'd need to
> build with at least -mfloat-abi=softfp, which keeps the same softfloat
> ABI as default, but allows using floating point instructions within
> functions, and also allows switching to hardfloat ABI selectively per
> function.
>
> Doing that, your build effectively targets/requires armeabi-v7a, in
> android NDK terms. You can't support the windows ABI within a plain
> armv5 armeabi build.

Yes, the intent is to use armeabi-v7a on Android. I haven't quite
figured out how to make my toolchain default to that yet...

-- 
Alexandre Julliard
julliard at winehq.org