Re: RFA: add fsrra and fsca instructions to SH simulator (resend)

[Andrew Cagney <ac131313 at redhat dot com>]

> > > 2003-10-24  J"orn Rennecke <joern.rennecke@superh.com>
> > > 
> > > 	* interp.c (fsca_s, fsrra_s): New functions.
> > > 	* gencode.c (tab): Add entries for fsca and fsrra.
> > > 	(expand_opcode): Allow variable length n / m fields.
>
> > Is it possible for this code to use the far more portable sim-fpu?
>
>
> The entire SH3E / SH4 simulator in sim/sh already uses native floating point,
> so making just these two instructions use sim-fpu would be pointless.
>
> Converting the entire simulator would of course be possible, but I don't
> see any pressing need to do this now.  We have far more urgent issues
> with SH5 support in gcc and gdb that we should address first.

Can _just_ these new functions be implemented using sim-fpu?

Since the other code effectively pre-dates sim-fpu the fact that it 
didn't use it is understandable.  However, that doesn't excuse _new_ 
code from using the more robust sim-fpu.  You'll note that I carefully 
avoided suggesting that you should fix any of the old code - that would 
be unreasonable.

Andrew