Status of glibc on pre-v9 SPARC

[David Miller]

From: Joseph Myers <joseph@codesourcery.com>
Date: Fri, 15 Dec 2017 17:20:34 +0000

> Is this something that is still intended to be fixed?  Or should pre-v9 
> 32-bit SPARC be considered like the original i386, i.e. too little atomic 
> operation support so should no longer be supported with v9 being made the 
> official minimum supported by glibc?

I would really like to fix it and began work on a kernel call that would
allow emulating CAS when the cpu lacks the instruction.

Also, LEON cpus have CAS in hardware and are pre-v9.

I can try to get on top of this work again, but no promises.