MIPS instruction set configuration, was: Re: [Qemu-devel] Pending MIPS patches

[Dirk Behme]

Fabrice Bellard wrote:

> > > > 3. [PATCH] Add special MIPS multiply instructions
> > > > http://lists.gnu.org/archive/html/qemu-devel/2006-04/msg00375.html
> > >
> > > Same remark.
> >
> > These are NEC VR54xx specific extensions to the MIPS instruction set.
> >
> > They are used if you use GCC's -march=vr5400 option. See
> >
> > www.necelam.com/docs/files/1375_V2.pdf
> >
> > as well.
>  
> Can you add some kind of define or dynamic processor definnition in your 
> patch so that we can keep track of the exact instruction set ?

Yes, I will update the patch. Any ideas or proposals from 
anybody how to do this the best way? Are there already 
examples from other architectures?

I think a define to be able to completely select/unselect it 
at compile time combined with possibility for dynamic 
runtime selection would be the best?

Regards

Dirk