7 commits

Author	SHA1	Message	Date
Marius Strobl	13a10f3414	Implement atomic_swap_{int,long,ptr}(9).	2018-08-07 18:56:51 +00:00
Konstantin Belousov	30d4f9e888	Add atomic_load(9) and atomic_store(9) operations. ... They provide relaxed-ordered atomic access semantic. Due to the FreeBSD memory model, the operations are syntaxical wrappers around the volatile accesses. The volatile qualifier is used to ensure that the access not optimized out and in turn depends on the volatile semantic as implemented by supported compilers. The motivation for adding the operation is to help people coming from other systems or knowing the C11/C++ standards where atomics have special type and require use of the special access operations. It is still the case that FreeBSD requires plain load and stores of aligned integer types to be atomic. Suggested by: jhb Reviewed by: alc, jhb Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D13534	2017-12-19 09:59:20 +00:00
Ruslan Bukin	5c118142b4	Undefine temporary macro. ... This fixes world build. Sponsored by: DARPA, AFRL	2017-06-17 07:36:46 +00:00
Ruslan Bukin	43b595f6a5	Implement atomic_fcmpset_*() for RISC-V. ... Requested by: mjg Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D9447	2017-02-05 00:32:12 +00:00
Ruslan Bukin	c7977d4cee	Remove duplicates.	2016-02-22 14:13:05 +00:00
Ruslan Bukin	5fe191b01e	Add the implementation of atomic_swap_32().	2016-02-17 14:32:03 +00:00
Ruslan Bukin	8d7e7a98db	Import RISC-V machine headers. This is a minimal set required to compile ... kernel and userland. Reviewed by: andrew, imp, kib Sponsored by: DARPA, AFRL Sponsored by: HEIF5 Differential Revision: https://reviews.freebsd.org/D4554	2015-12-17 18:44:30 +00:00