Carlos O'Donell wrote: > exchange_and_add > atomic_add > compare_and_swap > > The last being the most important since it's used in > glibc's linuxthreads implementation :} I can hack an implementation of this. But I need some guidance on interfaces and what works for glibc upstream. Any other arches that don't have those routines implemented in their insn set I can model the implementation after? grant