"Perry E.Metzger" <perry@piermont.com> writes:

> > Besides, that just moves i386 into the non-stack-ID camp. I actually
> > care about the general problem.
> 
> ARM, SuperH and Vax have a lot of registers available. We could find a
> way to do something there.

Not without cooperation from the compiler and having an ABI flag
day. While coercing GCC into avoiding a register is pretty easy,
outlawing the use of previously-compiled code in threaded programs is
a complete non-starter (and ARM's 15 registers + PC doesn't really
count as "a lot").

        - Nathan