Re: MIPS32 / MIPS64 release 2 support in simulator

[David Ung <davidu@mips.com>]

On Mon, 2004-11-08 at 16:43, Andrew Cagney wrote:
> cgd@broadcom.com wrote:
> > At Thu, 4 Nov 2004 13:53:38 +0000 (UTC), "David Ung" wrote:
> > 
> >>I shall update mips.igen with the new r2 instructions and then submit it
> >>as a patch.
> > 
> > 
> > cool, thanks.
> 
> Don't.  These new changes go in a new file, and that file gets a very 
> clear FSF copyright.
> 
> Andrew
> 

arhh.  Chris's argument of that the rest of the tools consider rev 2
instructions as an ISA is quite a valid one.  And for consistency with
the existing structure, it looks to be the right thing to do.  
But when I got to merging in the r2 instructions into mips.igen, I do
see that for every mips32 / 64 instruction, I now have to also tag them
mips32r2 / 64r2.  It would probably be nicer to just tell it to include
all the mips32 instructions (which would be like treating it as an
ASE).  
But then again it brings us back to the original argument, and I
probably would lean slightly towards the ISA model and be part of
mips.igen depite polluting the whole file with *mips32r2: and *mips64r2:
tags.

David.