Mark Johnston 3ad6c736cf Provide a single implementation for each of the arm64 atomic(9) ops.
Parameterize the macros by type width as well as acq/rel semantics.
This makes modifying the implementations much less tedious and
error-prone and makes it easier to support alternate LSE-based
implementations.  No functional change intended.

Reviewed by:	andrew, kib
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation, Amazon (hardware)
Differential Revision:	https://reviews.freebsd.org/D23322
2020-02-03 18:22:59 +00:00
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