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[Bug java/71917] [7 regression] libjava.jar/ReturnProxyTest.jar etc. FAIL

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71917

--- Comment #8 from Matthew Fortune <matthew.fortune at imgtec dot com> ---
(In reply to Eric Botcazou from comment #7)
> > 2016-07-13  Matthew Fortune  <matthew.fortune@imgtec.com>
> > 
> >         * interpret-run.cc: Use ffi_arg for FFI integer return types.
>
> so we now have a double adjustment on 64-bit big-endian and this breaks. 
> Maybe there is something missing for little-endian MIPS in java_raw_api.c.

I'll certainly check on this but I did run the fix on both big and little
endian MIPS which seems to suggest there isn't a double adjustment overall. 
The layers involved in this have however exceeded what I can fit in my head so
I'll have to draw things out to try and understand what was/should-be/is
happening.

Is there any definition for the raw API? I've seen some reference to arguments
being passed 'in the way a java stack works' but am not sure how that relates
to FFI return values passed in registers.
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