RFR (M): 8036767 PPC64: Support for little endian execution model

[Andrew Hughes]

----- Original Message -----
> On Wed, 2015-02-18 at 07:33 -0500, Andrew Hughes wrote:
> > I now have these changes working on 8u31:
> > 
> > http://cr.openjdk.java.net/~andrew/rh1191652/root
> > http://cr.openjdk.java.net/~andrew/rh1191652/jdk
> > 
> > I can re-base these onto whichever OpenJDK 9 tree is appropriate and push
> > when
> > reviewed under the same bug as used for the HotSpot side.
> 
> Concurrently to Andrew I also worked on a fix for JDK9 and came up with
> a somewhat different approach (based on jdk9/dev):
> 
> http://tdaitx.github.com/openjdk-webrev/rh1191652-jdk9/webrev.00/hotspot/
> http://tdaitx.github.com/openjdk-webrev/rh1191652-jdk9/webrev.00/root
> 

Ah, I see you took a more conservative approach. I prefer to make ppc64le
explicit in the JDK to future-proof us from any further problems. The main
reason for re-using ppc64 in HotSpot is just to avoid duplicating makefiles.

> To make it easy I already rebased Andrew's JDK8u31 patches to jdk9/dev
> (due to that the webrev ended up with my username).
> 
> http://tdaitx.github.com/openjdk-webrev/rh1191652-jdk9/ahughes-webrev.00/hotspot/
> http://tdaitx.github.com/openjdk-webrev/rh1191652-jdk9/ahughes-webrev.00/jdk
> http://tdaitx.github.com/openjdk-webrev/rh1191652-jdk9/ahughes-webrev.00/root
> 

Thanks for this. I got some way to getting a 9 build going, but not there yet :(

> I tested both approaches by building Hadoop (which triggered some
> interesting bugs on various projects due to Jigsaw).
> 
> Sorry for the github links, but I don't have an account at
> cr.openjdk.java.net that I can use. I can provide tar files if anyone is
> willing to host those webrevs.
> 
> Regards,
> Tiago Daitx
> 
> 

-- 
Andrew :)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

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