wireguard-openbsd/sys/arch/m88k/include/atomic.h, branch jd/queueboosts

Adding membar_xxx defines to userland.

2018-08-22T11:25:58Z

The src/lib/libc/thread/rthread.c 1.8 change adds #include in userland code. Current m88k atomic.h contents are inside of #if defined(_KERNEL) guard, then, nothing is defined for userland program. So we need adding some defines to compile it on m88k. The original diff is suggested from Miod Vallat, modified by the advice from mpi@ and kettenis@. ok kettenis@

Fix cast in atomic_swap_ptr()

2015-07-03T12:47:30Z

pass atomic_{cas,swap}_uint a volatile void * instead of a volatile

2014-07-18T10:40:14Z

void **. the latter is really hard to cast for, and not what what solaris does. ok kettenis@

Add missing atomic primitives and __sync_synchronize to let the kernel

2014-07-13T08:13:07Z

compile again; tested by aoyama@

It's been a quarter century: we can assume volatile is present with that name.

2014-03-29T18:09:28Z

ok dlg@ mpi@ deraadt@

Switch m88k ports to ELF.

2013-01-05T11:20:52Z

Normalize sentinel. Use _MACHINE__H_ and ___H_ properly and consitently.

2011-03-23T16:54:33Z

Discussed and okay drahn@. Okay deraadt@.

Introduce atomic_clear_int() as an MD atomic operation to perform atomic

2009-03-04T19:37:14Z

exchange with zero; use it in the soft interrupt code to make it simpler and faster.

atomic_{set,clear}bits_int were not safe enough on 88110 systems, as they

2009-02-20T20:40:00Z

can be interrupted by NMI; move the SMP version of these routines from inlines to a separate file (kernel text shrinks 20KB...). Since the implementation for 88110 becomes really hairy, the pre-main() code is responsible for copying the appropriate code over for kernels configured for both 88100 and 88110 cpus, to avoid having to choose the atomicity strategy at runtime. Hairy, I said. This gets GENERIC.MP run much further on 197DP. Not enough to reach multiuser mode, but boots up to starting sshd and then panics.

xmem can not be used as a reliable atomic operation, they way we do them,

2007-12-05T22:09:13Z

so do the naive operations with interrupts disabled, and an interlock held if MULTIPROCESSOR.