libffi & powerpc

[Patrick Olinet]

ok, I've created PR31937 related to the libffi bug and I've also
submitted a quick patch to the gcc-patches mailing list

Patrick


On 5/16/07, Mike Stump <mrs@apple.com> wrote:
> On May 15, 2007, at 2:20 AM, Patrick Olinet wrote:
> > Finally, I've tried it the dirty way, ie by commenting out all the
> > "stfd" instructions at the beginning of the ppc_closure.S file and
> > things seem to work !!!
>
> Wonderful.  If you could, would you submit the patch to gcc-
> patches...  I suspect it is better than nothing, and it might be
> trivial enough to go in without paperwork.  Additionally, it might
> provide a basis for another contributor to build upon, as they then
> only have to do half the work.
>
> Thanks.
>
> > What worries me a bit is that "stfd" instructions are used to save
> > fpu registers states before the call (it's my guess) and I would
> > expect them to be restored afterwards, probably with "lfd" assembly
> > instructions (that I would need to comment out as well). But I
> > can't see such instructions...
>
> > Any thoughts about that ?
>
> Sure, don't worry about it, there is no matching instruction.  You
> just can't do functions that return float/double/long double from my
> quick reading.
>
> > And should I report a new bug for this libffi/powerpc problem ?
>
> We prefer to have a bug report for each bug...  :-)
>