[PATCH] Fix SPARC backtraces

[Mark Kettenis]

   Date: Fri, 05 Mar 2004 00:11:24 -0500
   From: Andrew Cagney <cagney@gnu.org>

   > As discussed before on the list, this makes sure we do the full frame
   > analysis even if %fp is zero.  This makes us do proper backtraces if a
   > frameless function was called from the outermost frame.

   Should this go on the branch?  It appears to make things more robust.

Shouldn't hurt, although from a user perspective it probably doesn't
matter that much, since the failure scenario only kicks in if you're
debugging "beyond main".

Anyway, committed the the branch now too.

Mark