Re: [patch/rfa] hppa stub unwinder

[Andrew Cagney <cagney at gnu dot org>]

> > use frame_unwind_prepend_unwinder() which addresses the ordering 
> > > problem.  If you want to convert things, it's pre-approved.
>
>
> I removed that chunk of the diff in the commited version. If needed will
> reintroduce later.
>
> I looked at frame_unwind_prepend_unwinder (), but it doesn't let me
> prepend a *sniffer*, so I don't know how to e.g. prepend a sigtramp
> unwinder -- how do i indicate that this unwinder is the wrong one
> at runtime?

Sniffers were recently added to the unwinders as ``optional static 
methods'' (I use the term loosely).  "tramp-frame.c" uses this 
(tramp_frame_sniffer).

Andrew