[aarch64-port-dev ] [15] RFR 8241765: Shenandoah: AARCH64 need to save/restore call clobbered registers before calling keepalive barrier

[Roman Kennke]

Ok. Thank you!

Roman


> This bug was discovered while testing aarch64 nmethod entry barrier
> patch posted by Stuart Monteith [1].
> 
> We had the same issues on x86 platforms, and fixed by JDK-8233500 and
> JDK-8237776, but never fixed aarch64.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8241765
> Webrev: http://cr.openjdk.java.net/~zgu/JDK-8241765/webrev.00/
> 
> Test:
>   hotspot_gc_shenandoah
> 
> Thanks,
> 
> -Zhengyu
> 
> [1]
> https://mail.openjdk.java.net/pipermail/hotspot-gc-dev/2020-March/028998.html
> 
>