Re: Linker plugin API.

[Oleg Ogurtsov <o dot ogurtsov at samsung dot com>]

I maked the new output statement and bfd section in ldlang.c inside 
lang_place_orphans().
The section is created with flags (ALLOC, LOAD, !RELOC, READ ONLY, 
HAS_CONTENTS, !NEVER_LOAD, !IS_COMMON, !MERGE, !SEC_GROUP, 
!LINKER_HAS_INPUT), but has wrong VMA and offset in output file.
What am I missing?

On 04/23/2018 07:13 PM, Cary Coutant wrote:
>> Is it possible to add/change/delete ELF Note sections from the linker
>> plugin?
>> I have object files with PT_NOTE sections and  non-standard fields. The
>> linker add fields from all object files to the output file.
>> I want to process fields and get one result field for output file. Is it
>> possible from plugin?
>> Where it is better to make such processing?
>> I would be grateful for the help.
> 
> The plugin API currently doesn't have any way to do something like
> this. It's theoretically possible, but it would take some pretty deep
> hooks in the linker to add plugin support for section merging and
> rewriting like this.
> 
> If you need it done at link time, I would suggest using a new
> vendor-specific section type instead of SHT_NOTE, and you can add
> built-in support to the linker for that section type. I'd prefer to
> discourage the overuse of SHT_NOTE sections for information that is
> more than mere notes.
> 
> -cary
> Best regards,
Oleg Ogurtsov.