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[RFA] ARM OABI - pc-relative relocations

Richard Earnshaw rearnsha@arm.com
Sat Dec 13 11:19:00 GMT 2003 
> On Fri, Dec 12, 2003 at 09:49:36PM +0100, Jerome Guitton wrote:
> >    c:   ebfffffb        bl      0 <r>
> > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> > 
> > Here is the problem. Even though arm-oabi uses RELA, an implicit addend
> > has been generated (-0xc). The relocation entry is:
> 
> This shouldn't really matter.  When applying a reloc, RELA targets are
> supposed to ignore the section contents in the field that the reloc
> replaces.
> 
> Ah!  On looking at elfarm_oabi.c, I see that src_mask is non-zero on a
> number of reloc howtos.  That's the real bug that needs fixing.  See the
> description of src_mask in bfd/reloc.c.

It really shouldn't matter at all now: nobody should be using the oabi 
code and I personally think it's time we GC'ed it.

R.

For reference, the OABI code was added before ARM defined a specification 
for ELF.  IIRC it was only around for about a year before it was 
superseded by the NABI implementation.
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