[PATCH 00/12] S390: Implement __fentry__

[Stefan Liebler]

On 08/02/2018 09:57 AM, Ilya Leoshkevich wrote:
> This patch series adds the runtime support in glibc for the -mfentry
> gcc feature introduced in [1] and [2].
> 
> Patches 1-9 deal with avoiding clobbering %r0 when calling lazily bound
> functions, so that the new __fentry__ symbol could be called with return
> address in that register.
> 
> Patch 10 removes the assumption that only Intel implements __fentry__.
> 
> Patch 11 adds __fentry__ implementation.
> 
> Patch 12 is a cleanup of problems in 31-bit mcount, which are similar to
> those found while implementing 64-bit __fentry__.
> 
> [1] https://gcc.gnu.org/ml/gcc-patches/2018-07/msg00784.html
> [2] https://gcc.gnu.org/ml/gcc-patches/2018-07/msg00912.html
> 
> 

Hi,

I've reviewed the s390-specific patches. They are all okay.

I think the move of the Intel-specific __fentry__ defintion into the 
Versions-files of the corresponding sysdeps directories is okay, too.
Do anybody complain about that?

If not, I plan to commit this patch-series at the end of this week.
Thank you for implementing the __fentry__ support for s390x.

Bye
Stefan