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(parent: 9873665) | patch
target/xtensa: implement exclusive access option
authorMax Filippov <jcmvbkbc@gmail.com>
Thu, 18 Apr 2019 23:37:00 +0000 (16:37 -0700)
committerMax Filippov <jcmvbkbc@gmail.com>
Wed, 15 May 2019 17:31:52 +0000 (10:31 -0700)
commitb345e140534ea17814b02bdf8798f18db6295304
treef9320a22da357d31ad10e17a340300b02a389b98tree | snapshot
parent98736654f3dfbf984d9e26c9be0480b0560c1067commit | diff
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>
target/xtensa/cpu.c diff | blob | history
target/xtensa/cpu.h diff | blob | history
target/xtensa/helper.h diff | blob | history
target/xtensa/op_helper.c diff | blob | history
target/xtensa/overlay_tool.h diff | blob | history
target/xtensa/translate.c diff | blob | history
tests/tcg/xtensa/test_exclusive.S [new file with mode: 0644] blob
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