Re: [arm-gnu] Advanced SIMD instruction support

[Paul Brook <paul@xxxxxxxxxxxxxxxx>]

> > I tried using this instruction but I get another error while assembling;
> > viz, "Error: selected FPU does not support instruction -- 'msr
> > fpexc,r1'". We pass the following options to the compiler / assembler :
> > 	-march=armv7a
> > 	-mfpu=neon
>
> Empirically, you also need the "-mfloat-abi=softfp" to gcc.  With that,
> I can compile this:
>
> void f() {
>   asm ("msr fpexc, r1");
> }
>
> Paul, is that what you'd expect?

Yes.

I'm still a bit confused why you're doing this at all though. The Linux kernel 
already has NEON support. You shouldn't need to add anything.

Paul