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

[Andrew Hughes]

----- Original Message -----
> I agreed with Volker, to the best of my knowledge AIX is Big Endian only
> and I know of no plan to change that.
> 
> Regards,
> Tiago
> 
> On Wed, 2015-02-25 at 16:25 +0100, Volker Simonis wrote:
> > On Wed, Feb 25, 2015 at 2:50 PM, Andrew Hughes <gnu.andrew at redhat.com>
> > wrote:
> > > ----- Original Message -----
> > >> On 2015-02-23 15:57, Erik Joelsson wrote:
> > >> > I think the jdk changes with ppc64le as CPU make sense.
> > >>
> > >> Jumping in a bit late in the discussion...
> > >>
> > >> I agree with Erik, having ppc64le as CPU seems the right way to go. I'm
> > >> just wondering if you have checked the makefiles if there are tests for
> > >> ppc64 elsewhere that will now fail for ppc64le. I noticed that there was
> > >> one such change in the configure script, but there might be more in the
> > >> makefiles themselves.
> > >>
> > >> /Magnus
> > >>
> > >
> > > These are the revised versions of the webrevs:
> > >
> > > http://cr.openjdk.java.net/~andrew/rh1191652/webrev.02/root/
> > > http://cr.openjdk.java.net/~andrew/rh1191652/webrev.02/jdk/
> > > http://cr.openjdk.java.net/~andrew/rh1191652/webrev.02/hotspot/
> > >
> > > (HotSpot is unchanged, dropped the sound changes from JDK)
> > >
> > > The only other ppc64 block I found is specifically AIX/ppc64 to exclude
> > > the serviceability agent:
> > >
> > > make/gensrc/Gensrc-jdk.jdi.gmk:ifeq (, $(filter
> > > $(OPENJDK_TARGET_OS)-$(OPENJDK_TARGET_CPU), aix-ppc64))
> > > make/Import.gmk:ifeq (, $(filter
> > > $(OPENJDK_TARGET_OS)-$(OPENJDK_TARGET_CPU), aix-ppc64))
> > >
> > > Does AIX support ppc64le?
> > >
> > 
> > To my best knowledge AIX neither supports ppc64le at the moment nor
> > are there any plans to support it in the future.
> > 
> > Regards,
> > Volker
> > 
> > > Thanks,
> > > --
> > > Andrew :)
> > >
> > > Free Java Software Engineer
> > > Red Hat, Inc. (http://www.redhat.com)
> > >
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> > >
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> > >
> > 
> 
> 
> 

Thanks, that was my assumption. I did wonder if the lack of SA was
AIX rather than AIX+PPC-specific and whether we could just drop the
arch test altogether... But if someone does start building ppc64le+AIX,
they'd find this issue straight away anyway.

Ok if I push the jdk and root parts then? I think someone on the Oracle
HS team (David?) needs to push the HotSpot bit.

Thanks,
-- 
Andrew :)

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

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