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| author | Max Filippov | 2019-04-19 01:37:00 +0200 |
|---|---|---|
| committer | Max Filippov | 2019-05-15 19:31:52 +0200 |
| commit | b345e140534ea17814b02bdf8798f18db6295304 (patch) | |
| tree | f9320a22da357d31ad10e17a340300b02a389b98 /python/qemu | |
| parent | target/xtensa: update list of exception causes (diff) | |
| download | qemu-b345e140534ea17814b02bdf8798f18db6295304.tar.gz qemu-b345e140534ea17814b02bdf8798f18db6295304.tar.xz qemu-b345e140534ea17814b02bdf8798f18db6295304.zip | |
target/xtensa: implement exclusive access option
The Exclusive Instructions provide a general-purpose mechanism for
atomic updates of memory-based synchronization variables that can be
used for exclusion algorithms.
Use cmpxchg-based implementation that is sufficient for the typical use
of exclusive access in atomic operations.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'python/qemu')
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