[PATCH v2] dl: Use "adr" assembler command to get proper load address on ARM

[Szabolcs Nagy]

The 10/26/2021 20:55, Joseph Myers wrote:
> On Tue, 26 Oct 2021, Lukasz Majewski wrote:
> 
> > > I sent patches (on top of a merge of the upstream cross_prelink and 
> > > cross_prelink_aarch64 branches) to the maintainer in May 2020 (the
> > > Yocto project mailing list doesn't accept email from non-subscribers,
> > > so won't have seen those patches), which made it work well enough to
> > > get clean prelink test results, but so far they haven't been
> > > committed to the upstream cross_prelink branch (or any other upstream
> > > branch).  I've now made those available at
> > > https://github.com/jsm28/prelink (cross_prelink_aarch64_fixes branch).
> > 
> > So this branch shall be pulled by yocto's cross-prelink maintainer.
> 
> It should be.
> 
> > Without it the cross-prelink doesn't support aarch64?
> 
> Correct.
> 
> With that branch, basic AArch64 support is there, but the following still 
> applies:
> 
> > > Note however that, like the original patches from Samsung, this
> > > version does indeed depend on a hack in _dl_tlsdesc_undefweak to work
> > > with TLS descriptors.
> 
> (And given that hack, test results with my branch should be clear on 
> AArch64.)

i think the undefweak hack is acceptable.
(in the non-prelinked case that path is rare)

and then i'm happy to take the load address change
to support prelinked ld.so.