[GOLD] R_PPC64_ENTRY support

[Alan Modra]

On Wed, Nov 25, 2015 at 12:14:22PM +1030, Alan Modra wrote:
> elfcpp/
> 	* powerpc.h (R_PPC64_ENTRY): Define.
> gold/
> 	* powerpc.cc (add_2_2_12, ld_2_12, lis_2): Define.
> 	(Target_powerpc::Scan::local, global): Handle R_PPC64_ENTRY.
> 	(Target_powerpc::Relocate::relocate): Edit code at R_PPC64_ENTRY.

Now committed.  I was waiting for the other gold entry code editing
patches to be approved, but that seems to be taking a while.  So at
the moment we have optimisation of the the large model entry code to
non-PIC but not the same for medium model.

-- 
Alan Modra
Australia Development Lab, IBM