[PATCHv2] powerpc64: Implement TLS using PC-relative addressing

[Tulio Magno Quites Machado Filho]

Tulio Magno Quites Machado Filho via Libc-alpha <libc-alpha@sourceware.org> writes:

> Changes since v1:
>  - Dropped the workaround for early GCC 10 versions.  We can't get this
>    code to work without having the macro __PCREL__.  The previous code
>    was failing if -mcpu=power10 -mno-pcrel was used.
>  - Fixed coding style issues (added space after #defined and removed
>    unnecessary parenthesis).
>
> ---8<---
>
> As the TOC pointer becomes optional on POWER, TLS access has to be
> modified in order to use PC-relative addressing instead of depending on
> the TOC pointer availability.
>
> This patch also changes old TLS code to use the new syntax.  It's a
> purely aesthetical change: the old code still works and the new syntax
> helps to move the argument setup instruction away from the call, which
> is not used in an inline assembly.
>
> Suggested-by: Alan Modra <amodra@gmail.com>

Adhemerval,

I've just realized I forgot to Cc you in this patch.
It's fixing test failures when building glibc using --with-cpu=power10.

May we merge it for 2.33?

-- 
Tulio Magno