[Bug dynamic-link/27924] ld.so: Support DT_RELR relative relocation format

["ccoutant at gmail dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=27924

--- Comment #7 from Cary Coutant <ccoutant at gmail dot com> ---
(In reply to Carlos O'Donell from comment #6)
> (In reply to Fangrui Song from comment #5)
> > (In reply to Carlos O'Donell from comment #3)
> > > The proposal to the ABI seems stalled and probably needs to be pushed again
> > > to the gABI group with the updated wording for review again? The alternative
> > > is not to extend the gABI but consider this a GNU ABI extension. If Google
> > > has interest in moving this forward someone needs to be a change champion
> > > here and work with upstream.
> > > 
> > > Objectively I have no problem with SHT_RELR, but it should be documented in
> > > our ABI docs *somewhere* so we have a concrete place to discuss future
> > > changes and accept those changes.
> > > 
> > > Today the gABI list is a "consensus" group with Cary Coutant documenting
> > > that consensus. The GNU ABI is implemented by the GNU Toolchain, so there is
> > > probably some consensus there that needs forming, but we can do that too.
> > 
> > http://www.sco.com/developers/gabi/latest/contents.html is unmaintained and
> > receives no update since circa 2016. So SHT_RELR is wording adopted by many
> > groups, including Solaris which has many differences with the GNU ABI.
> 
> No update since 2016 does not mean unmaintained. Please speak with Cary
> Coutant to determine the current status.

I am now under contract with Xinuos to convert the documentation
to a more maintainable form and maintain it from there. Current plans
are to translate it to ReStructured Text and place it on github.

SHT_RELR is the first of the updates I plan to apply once the
conversion is done.

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