User-space context switch and floating-point

Marcel Moolenaar marcel at xcllnt.net
Wed Mar 3 19:36:57 PST 2004


On Thu, Mar 04, 2004 at 12:36:28PM +1000, Peter Grehan wrote:
> > Yes, but I thought the i386 FP calling convention was that all
> >FP registers were volatile across calls, so all were preserved
> >by the callee.
> 
>  Oops, I meant 'caller'...

Yes. You need to save the FP registers on PPC that are callee
saved.

-- 
 Marcel Moolenaar	  USPA: A-39004		 marcel at xcllnt.net


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