diff options
| author | Haojian Zhuang <haojian.zhuang@linaro.org> | 2015-10-27 11:56:57 +0000 |
|---|---|---|
| committer | leiflindholm <leiflindholm@Edk2> | 2015-10-27 11:56:57 +0000 |
| commit | 7fe513896e16b560c5f1551e3f4bfffcb197b53b (patch) | |
| tree | 2f55b334d181be1f067dd4e8d0997664986f7b5e /MdePkg/Library/BaseSynchronizationLib | |
| parent | 8a4582838b42e92d6d6429a7289b04e50ad084de (diff) | |
| download | edk2-platforms-7fe513896e16b560c5f1551e3f4bfffcb197b53b.tar.xz | |
MdePkg/BaseSynchronizationLib: fix AArch64 return values
Fix the wrong return value of both InternalSyncIncrement()
and InternalSyncDecrement(). The return value shouldn't
be the address of input parameter. It should be the updated
value of input parameter instead.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18685 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseSynchronizationLib')
| -rw-r--r-- | MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.S b/MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.S index ecb87fc127..9513b1a1bb 100644 --- a/MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.S +++ b/MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.S @@ -171,6 +171,7 @@ TryInternalSyncIncrement: add w1, w1, #1
stxr w2, w1, [x0]
cbnz w2, TryInternalSyncIncrement
+ mov w0, w1
dmb sy
ret
@@ -199,5 +200,6 @@ TryInternalSyncDecrement: sub w1, w1, #1
stxr w2, w1, [x0]
cbnz w2, TryInternalSyncDecrement
+ mov w0, w1
dmb sy
ret
|