[Buildroot] [PATCH] gcc: powerpc32 transition to secureplt

[Matthew Weber]

Peter,


On Wed, Sep 23, 2020 at 10:29 AM Matt Weber
<matthew.weber at rockwellcollins.com> wrote:
>
> PowerPC has two PLT models: BSS-PLT and Secure-PLT. BSS-PLT uses
> runtime code generation to generate the PLT stubs. Secure-PLT was
> introduced with GCC 4.1 and Binutils 2.17 (base has GCC 4.2.1 and
> Binutils 2.17), and is a more secure PLT format, using a read-only
> linkage table, with the dynamic linker populating a non-executable
> index table.
>
> Ref to other distro/BSD transitions
> https://patchwork.openembedded.org/patch/106621/
> https://reviews.freebsd.org/D20598
>
> Fixes a bug observed when creating SELinux policy where all apps
> require execmem because the heap requires execute before this
> change.
>

This also applies to 2020.02.x and the previous release 2020.08.

Best Regards,
Matt