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
This implements the function InterlockedCompareExchange16 () for all
architectures, using architecture and toolchain specific intrinsics
or primitive assembler instructions.
Contributed-under: TianoCore Contribution Agreement 1.0
Reviewed-by: Olivier Martin <olivier.martin@arm.com>
Acked-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16966 6f19259b-4bc3-4df7-8a09-765794883524
This implements the following synchronization primitives for AArch64 (GCC)
and ARM (GCC & RVCT):
InternalSyncCompareExchange32
InternalSyncCompareExchange64
InternalSyncIncrement
InternalSyncDecrement
Note: these functions are implemented using the exclusive monitor,
which implies that they can only be used after the caches (and hence
the MMU) have been enabled.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16965 6f19259b-4bc3-4df7-8a09-765794883524
Haojian Zhuang
Ard Biesheuvel
Olivier Martin