[PATCH] Lexra binutils

Adam Nemet anemet@caviumnetworks.com
Fri Sep 19 04:08:00 GMT 2008


"Maciej W. Rozycki" <macro@linux-mips.org> writes:
> On Wed, 17 Sep 2008, Thiemo Seufer wrote:
>
>> The latter, I called I1- ("MIPS I minus") what you call ILX.
>> That way, the progression of ISA supersets is I1- -> I1 -> I2 ...
>
>  How about ISA0? ;)  Hopefully no one will think about subsetting it any
> further -- there isn't much left to subtract from.

It would be nice to add something more general than this.  On Octeon we also
have a mode where there are replacement instructions for l[wd]l/l[wd]r.  At
some pont I will try to add support for those on mainline so I guess along the
logic in this thread I would have to define a new ISA, 64r2-.

Can't we just instead do something similar to how I generalized Octeon's
omission of certain cop instructions with NO_ISA_COP?

Adam



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