[rfc/rfa] Use ARM exception tables as GDB unwinder

[Daniel Jacobowitz]

On Sat, Mar 19, 2011 at 12:01:04AM +0100, Ulrich Weigand wrote:
> After some back and forth, I've been able to come up with a solution
> that works well enough for all GDB tests to pass.  It is not completely
> perfect since unwinding (on the parent side) out of an interrupted vfork
> call works only while the child has not yet clobbered the stack, but I
> don't see how to do anything better ...
> 
> Patch is appended below.  Does this look reasonable to you?

Yes, this does.

-- 
Daniel Jacobowitz
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