[RFC][PATCH] Check ELF relocs after opening all all input files
H.J. Lu
hjl.tools@gmail.com
Thu Apr 28 12:50:00 GMT 2016
On Wed, Apr 27, 2016 at 6:11 PM, Alan Modra <amodra@gmail.com> wrote:
> On Wed, Apr 27, 2016 at 03:24:48PM -0700, H.J. Lu wrote:
>> bfd_elf_record_link_assignment
>> is called after check_relocs. bfd_elf_record_link_assignment sets non_elf,
>> def_regular and forced_local. For PROVIDE, it also updates root.type. They
>> are needed in reloc_checks.
>
> My guess is that symbol twiddling done in before_allocation should be
> moved to a new ldemul hook called at the start of lang_do_assignments.
> The idea being to stabilize symbols earlier.
>
> The hook would twiddle __ehdr_start and call find_statement_assignment
> when lang_mark_phase_enum. Reversing the __ehdr_start twiddle stays
> in before_allocation.
>
I tried this. But it doesn't work with __start/__stop symbols. I
need to know if they are defined and referenced local in check_relocs.
--
H.J.
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