Why did SUN depreciate the SWAP instruction on the SPARC?

[Chris Thomasson]

Here is some context for my query:

http://groups.google.com/group/comp.arch/msg/04cb5e2ca2a7e19a

http://groups.google.com/group/comp.programming.threads/msg/e57b5a101c74e293

http://groups.google.com/group/comp.programming.threads/msg/fcd35fc072a17109

http://groups.google.com/group/comp.programming.threads/msg/bc3f5217aac9f631

Why did SUN basically force me to use CAS to implement a SWAP? I don't like
the fact that they turned a perfectly fine wait-free 'SWAP' instruction into
a lock-free 'CAS' loop.

:^/

--
Chris M. Thomasson
http://appcore.home.comcast.net