[PATCH][BZ #19490] Add unwind descriptors for x86_64 _mcount and __fentry__

[H.J. Lu]

On Thu, Mar 3, 2016 at 9:35 AM, Paul Pluzhnikov <ppluzhnikov@google.com> wrote:
> On Thu, Mar 3, 2016 at 9:30 AM, H.J. Lu <hjl.tools@gmail.com> wrote:
>
>> Why do we need __fentry__ different from _mcount in glibc? Can we
>> make __fentry__  an alias of _mcount?
>
> For one thing, they have different stack alignment requirements, as I
> already said on this thread:
> https://sourceware.org/ml/libc-alpha/2016-02/msg00823.html

Please update _mcount.S with your comments above.  OK with
that change.

Thanks for your patience.


-- 
H.J.