Re: [Libunwind-devel] [PATCH] [MIPS] Stack-unwinding through signal frames

[Faraz Shahbazker]

On 03/19/2015 09:19 PM, Arun Sharma wrote:
> On Thu, Mar 19, 2015 at 9:52 AM, Faraz Shahbazker
> <address@hidden> wrote:
> 
>>> Assumes your libc has the .cfi_signal_frame annotations in the right
>>> places.
>>
>> Okay, looks like its not available for MIPS.
> 
> You mean widely deployed libcs for MIPS don't have the
> .cfi_signal_frame annotation?
> 
> I'm ok with applying your patches for now. But could you please work
> with the upstream maintainers to add the annotation, so we can revert
> this code when the annotation is widely deployed?

I will do that, but it would be good to get this patch in just to get MIPS 
support in libunwind on terms with what other architectures are doing vis-a-vis 
signal-frame detection. As far as I can make out, x86_64 is the only arch that 
uses CIE augmentation strings, all other architectures rely on checking 
preceding instructions.

Regards,
Faraz Shahbazker