setjmp() on ARM with Neon

[Matthew Gretton-Dann]

On 06/05/13 14:27, Sebastian Huber wrote:
> Hello,
>
> the implementation of setjmp() in "newlib/libc/machine/arm/setjmp.S" doesn't
> store the non-volatile Neon registers d8..d15.  Is this correct?  I think we
> have to save and restore these registers if __ARM_NEON__ is defined.

I agree - but not just __ARM_NEON__ also when VFP is enabled.  We should 
also save WMMX registers when WMMX is available.  See the ABI docs here:

http://infocenter.arm.com/help/topic/com.arm.doc.ihi0039c/IHI0039C_clibabi.pdf

Unfortunately I doubt I have time at the moment to generate an appropriate 
patch.

Thanks,

Matt


-- 
Matthew Gretton-Dann
Toolchain Working Group, Linaro