K 10
svn:author
V 6
kevans
K 8
svn:date
V 27
2021-10-07T03:29:06.679332Z
K 7
svn:log
V 515
Provide generic sub-word atomic *cmpset

Provide *cmpset_{8,16} as wrappers around atomic_fcmpset_32. Initial users
will be mips and sparc64, and perhaps parts of powerpc.

This are not for general consumption; machine/atomic.h should include this
header as needed to provide atomic_{,f}cmpset_{8,16} and machine/atomic.h
should provide acq_ and rel_ variants.

(cherry picked from commit b6c5d1ef76cdcfe2103fd2ed8ef8f97e1c740edc)

Git Hash:   0c0fe8a6ff8b01018aa2c0f5a93d4dd52da0dfcd
Git Author: kevans@FreeBSD.org
END