AArch64 in JDK 9?

[Andrew Haley]

I have prepared a diff that is the patch needed in the shared parts
of HotSpot for OpenJDK 9.

It is at http://cr.openjdk.java.net/~aph/aarch64.1

If it would help to have a webrev I will do that, but it wasn't
clear how it should be done.

I believe that there are no non-trivial changes to shared code which
are not guarded by TARGET_ARCH_aarch64, therefore it is unlikekly that
any other target will be affected.  There are a couple of trivial
white space changes which I intend to remove; please ignore these.

I hope that this will help you estimate the work required on Oracle's
side to integrate this port.

Thanks,
Andrew.