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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2015-02-28 20:31:54 +0000 |
|---|---|---|
| committer | lersek <lersek@Edk2> | 2015-02-28 20:31:54 +0000 |
| commit | 9b89163eea30762f7ab91dcdc414820173cbf858 (patch) | |
| tree | fb413e3b86023d358593766371ee0341b9c7368d /MdePkg/Library/BaseSynchronizationLib/Ipf | |
| parent | cc3104283f47d99a68e555582a3298a26735eb84 (diff) | |
| download | edk2-platforms-9b89163eea30762f7ab91dcdc414820173cbf858.tar.xz | |
MdePkg/BaseSynchronizationLib: Add InterlockedCompareExchange16
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
Diffstat (limited to 'MdePkg/Library/BaseSynchronizationLib/Ipf')
| -rw-r--r-- | MdePkg/Library/BaseSynchronizationLib/Ipf/InterlockedCompareExchange16.s | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseSynchronizationLib/Ipf/InterlockedCompareExchange16.s b/MdePkg/Library/BaseSynchronizationLib/Ipf/InterlockedCompareExchange16.s new file mode 100644 index 0000000000..1e56942a98 --- /dev/null +++ b/MdePkg/Library/BaseSynchronizationLib/Ipf/InterlockedCompareExchange16.s @@ -0,0 +1,30 @@ +/// @file +/// Contains an implementation of InterlockedCompareExchange16 on Itanium- +/// based architecture. +/// +/// Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> +/// Copyright (c) 2015, Linaro Ltd. All rights reserved.<BR> +/// This program and the accompanying materials +/// are licensed and made available under the terms and conditions of the BSD License +/// which accompanies this distribution. The full text of the license may be found at +/// http://opensource.org/licenses/bsd-license.php. +/// +/// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +/// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +/// +/// Module Name: InterlockedCompareExchange16.s +/// +/// + +.auto +.text + +.proc InternalSyncCompareExchange16 +.type InternalSyncCompareExchange16, @function +InternalSyncCompareExchange16:: + zxt2 r33 = r33 + mov ar.ccv = r33 + cmpxchg2.rel r8 = [r32], r34 + mf + br.ret.sptk.many b0 +.endp InternalSyncCompareExchange16 |