[PATCH] openjdk/zero: only use FPU opcodes if FPU is available

Gary Benson gbenson at redhat.com
Wed Jun 23 02:22:33 PDT 2010

Sebastian Andrzej Siewior wrote:
> * Gary Benson | 2010-06-23 09:29:21 [+0100]:
> > Basically, if you just want to run stuff then it's ok to bypass
> > that piece of assembler, but if you want to certify the builds
> > for whatever reason then you will need to figure out some other
> > way to do a 64-bit atomic copy.
> Is it garanteed that the adress I'm reading from and writing to is
> properly aligned on a 64bit address boundary?

Not sure.  I guess that's a question for one of the HotSpot guys:
are long and double fields 64-bit aligned on 32-bit machines?  Or,
if not, is it possible to make them be?

> > > > Have you signed the SCA?  If so I can (or you can) make a
> > > > webrev for this and submit it for inclusion.
> > > 
> > > I haven't.
> > 
> > Are you able to sign it?
> I clicked that link but I ended somewhere at oracle.com with 404.

So it does.  Maybe someone from Oracle could point you to the correct



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