diff --git a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf index cf176619d2..fc7869f291 100755 --- a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf +++ b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf @@ -42,6 +42,7 @@ Ia32/InterlockedCompareExchange64.asm | INTEL Ia32/InterlockedCompareExchange32.nasm| INTEL Ia32/InterlockedCompareExchange32.asm | INTEL + Ia32/InterlockedCompareExchange16.nasm| INTEL Ia32/InterlockedCompareExchange16.asm | INTEL Ia32/InterlockedDecrement.asm | INTEL Ia32/InterlockedIncrement.asm | INTEL diff --git a/MdePkg/Library/BaseSynchronizationLib/Ia32/InterlockedCompareExchange16.nasm b/MdePkg/Library/BaseSynchronizationLib/Ia32/InterlockedCompareExchange16.nasm new file mode 100644 index 0000000000..8cabe66ddf --- /dev/null +++ b/MdePkg/Library/BaseSynchronizationLib/Ia32/InterlockedCompareExchange16.nasm @@ -0,0 +1,43 @@ +;------------------------------------------------------------------------------ +; +; Copyright (c) 2006, Intel Corporation. All rights reserved.
+; Copyright (c) 2015, Linaro Ltd. All rights reserved.
+; 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.Asm +; +; Abstract: +; +; InterlockedCompareExchange16 function +; +; Notes: +; +;------------------------------------------------------------------------------ + + SECTION .text + +;------------------------------------------------------------------------------ +; UINT16 +; EFIAPI +; InternalSyncCompareExchange16 ( +; IN UINT16 *Value, +; IN UINT16 CompareValue, +; IN UINT16 ExchangeValue +; ); +;------------------------------------------------------------------------------ +global ASM_PFX(InternalSyncCompareExchange16) +ASM_PFX(InternalSyncCompareExchange16): + mov ecx, [esp + 4] + mov ax, [esp + 8] + mov dx, [esp + 12] + lock cmpxchg [ecx], dx + ret +