diff --git a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf index 6f7f24b2c8..0df1ddbedb 100755 --- a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf +++ b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf @@ -64,6 +64,7 @@ X64/InterlockedCompareExchange64.asm | INTEL X64/InterlockedCompareExchange32.nasm| INTEL X64/InterlockedCompareExchange32.asm | INTEL + X64/InterlockedCompareExchange16.nasm| INTEL X64/InterlockedCompareExchange16.asm | INTEL X64/InterlockedDecrement.c | MSFT diff --git a/MdePkg/Library/BaseSynchronizationLib/X64/InterlockedCompareExchange16.nasm b/MdePkg/Library/BaseSynchronizationLib/X64/InterlockedCompareExchange16.nasm new file mode 100644 index 0000000000..1d72d074f6 --- /dev/null +++ b/MdePkg/Library/BaseSynchronizationLib/X64/InterlockedCompareExchange16.nasm @@ -0,0 +1,42 @@ +;------------------------------------------------------------------------------ +; +; 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: +; +;------------------------------------------------------------------------------ + + DEFAULT REL + SECTION .text + +;------------------------------------------------------------------------------ +; UINT16 +; EFIAPI +; InterlockedCompareExchange16 ( +; IN UINT16 *Value, +; IN UINT16 CompareValue, +; IN UINT16 ExchangeValue +; ); +;------------------------------------------------------------------------------ +global ASM_PFX(InternalSyncCompareExchange16) +ASM_PFX(InternalSyncCompareExchange16): + mov ax, dx + lock cmpxchg [rcx], r8w + ret +