mn10300: relaxing vs section merging

[DJ Delorie]

> > >> > You have to use section-relative relocs with section merging
> > 
> > >> Why?
> > 
> > > Because _bfd_elf_rela_local_sym() only adjusts STT_SECTION symbols.
> > > If you have other types of symbols, it doesn't seem to adjust the
> > > values properly.
> > 
> > Hmm...  Maybe it should be improved/fixed, then?  I suppose whenever
> > we get called with a symbol, we should figure out in which section it
> > is, find the relocation for the section, and then apply the symbol
> > offset into the section again.
> 
> Local symbols in SEC_MERGE sections are adjusted, but too late for
> you when doing relaxing.  See elf_link_input_bfd.  You can't do the
> adjustment until you know final section layout, because some symbols
> might end up pointing outside their section, or even outside their
> bfd.  Of course, you can't make the final section layout until
> relaxing is complete..
> 
> I suppose it would be possible to move all the local sym adjustments
> into _bfd_elf_rel{,a}_local_sym.  Note that _bfd_elf_rel_local_sym
> looks like it handles any local sym.  Beware!  _bfd_elf_rel_local_sym
> should be (and is currently) only called on section syms.

Ok, so can I commit my patch then?  It sounds like I'm doing the right
thing...