[committed] Ensure pc-relative calls can reach their target on

[John David Anglin]

> > There is no long branch stub support and out of range branches are silent=
> ly
> > accepted.  We need to port the stub management code from elf32-hppa.c to
> > elf64-hppa.c.  This is a bit tricky since the code has diverged in other
> > ways.
> 
> The long branch stub code does seem like it would be a worthy target
> for trying to abstract out so more architectures can use it. For the
> port of binutils I have here (still out of tree pending copyright
> assignment) I adapted the elf32-hppa code. I believe powerpc also has
> similar code, and I'm sure other architectures do as well.

I'm definitely interested in long branch stub code for elf64-hppa
and I suspect the implementation will be very similar to that for
elf32-hppa.  It's somewhat simpler in that there's only one stub
type.

It's possible that there might be enough common code to abstract
the solution out to other architectures.  I believe the current
elf32-hppa implementation is lacking in that it can't handle large
.text blocks (i.e., one needs to compile with -ffunction-sections).

Dave
-- 
J. David Anglin                                  dave.anglin@nrc-cnrc.gc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6602)