Re: bswap,xadd and cmpxchg emulation on 386
On Tue, Apr 05, 2005 at 11:34:50AM +0200, Peter 'p2' De Schrijver wrote:
> I got from Andreas that not everyone was aware 486 stepping A CPUs are
> affected as well. But 486 stepping A CPUs actually do have cmpxchg, but
> with other opcodes if I get it correctly. So the emulation could be much
> simpeler here. As to implementing this, not in the first weeks and I
> don't have any of the affected CPUs. I guess one hacking weekend with a
> few knowledgeable people and a crate of club-mate should do though.
Just for the record: I still have the 80386 around I offered
for access/ownership to any people interested in these matters.
Frank Lichtenheld <firstname.lastname@example.org>