Re: [Q] Looking for an emulation for CMOV* instructions.

Alan Cox (alan@lxorguk.ukuu.org.uk)
Fri, 11 Jan 2002 00:26:07 +0000 (GMT)

> > hard to get emulations right. I grant that this wasn't helped by the fact
> > the gcc x86 folks also couldnt read the pentium pro manual correctly.
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> What do you mean with this? Explain, please!

gcc told to generate i686 binaries uses cmov unconditionally. The intel
PPro handbook explicitly says that cmov must be checked for.

> myself but I have also some older machines here that have a k6 or a
> pentium. For mistake I installed the wrong rpm and had a non working
> system. An emulation for such cases would be a _real_ feature at least

So you have a buggy rpm program. Get the rpm program fixed so it correctly
stops you from doing that.

Alan

--
	    If my call is so important to you why don't you hire 
		  some more people to answer the telephone? 
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/