[patch/rfa] Signal trampoline unwinder for hppa-hpux

[Randolph Chung]

> Can this make use of tramp-frame for the pattern match?  For single 
> stepping through trampolines to work, this code needs to be able to 
> match the tramp when part way through it (what sigstep is testing).

As it turns out, no, not easily....

The signal trampoline on hpux actually has a name (_sigreturn), so it
fails the check in tramp_frame_sniffer ()

:-(

randolph
-- 
Randolph Chung
Debian GNU/Linux Developer, hppa/ia64 ports
http://www.tausq.org/