elf_link_hash_entry vs generic_link_hash_entry

[Thiemo Seufer]

Nick Clifton wrote:
> Hi Guys,
> 
>   Ian Taylor has pointed out that my recent patch to elfxx-target.h
>   has actually broken several elf based ports.  (Specifically: pj,
>   m88k, m68hc11, m68hc12, i960, d30v, arc, gen).  The problem is that
>   these ports uses the generic linker code to perform section
>   relocation rather than having their own specific code.  This breaks
>   if the elf hash table structure (elf_link_hash_entry) is used
>   instead of the generic_link_hash_entry structure, since the two
>   structures are not compatable.  The reason that my patch changed
>   elfxx-target.h so that all elf backends would use elf_link_hash_entry
>   is that several other parts of the elf linker rely upon using other
>   fields which are only found in that structure.
> 
>   As I see there are three ways that we can fix this:
> 
>    1. Require that all ELF backends define their own section
>       relocation function and final link function.  Make it a #error
>       if they do not.  Fix all the ports that currently do not do
>       this.  This is Ian's recommended solution.

What about introducing something like generic_elf_final_link_relocate()
and generic_elf_final_link() instead of code duplication?


Thiemo