[PATCH] Support for MIPS R5900 (Sony Playstation 2)

["Jürgen Urban"]

Hello,

> > > > It would be nice when this can be added to the offical binutils.
> Please
> > > > tell me if this acceptable or there is a problem.
> > > 
> > > I suppose the main potential barrier is whether the copyright can
> still
> > > be assigned to the FSF.
> 
> I re-created the patch. The new patch only includes copyrights from me and
> some few lines from ragnarok2040.

It seems that the patch was not yet processed. So I created a new one with some fixes (including the old patch).
I added tests for all new instructions (gas/testsuite/gas/mips/r5900-full.d and gas/testsuite/gas/mips/r5900-full.s). With the tests I detected that I made some mistakes when re-creating the patch from scratch. I confused the parameters for psllvw, psravw and psrlvw. This is fixed in the new patch.

Best regards
Jürgen Urban
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