diff options
Diffstat (limited to 'MdePkg/Library/BaseSynchronizationLib/X64/InterlockedDecrement.nasm')
| -rw-r--r-- | MdePkg/Library/BaseSynchronizationLib/X64/InterlockedDecrement.nasm | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/MdePkg/Library/BaseSynchronizationLib/X64/InterlockedDecrement.nasm b/MdePkg/Library/BaseSynchronizationLib/X64/InterlockedDecrement.nasm index 0325fdf93e90..d36d9b0073b7 100644 --- a/MdePkg/Library/BaseSynchronizationLib/X64/InterlockedDecrement.nasm +++ b/MdePkg/Library/BaseSynchronizationLib/X64/InterlockedDecrement.nasm @@ -1,13 +1,7 @@ ;------------------------------------------------------------------------------ ; -; Copyright (c) 2006 - 2016, Intel Corporation. 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. +; Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> +; SPDX-License-Identifier: BSD-2-Clause-Patent ; ; Module Name: ; @@ -33,7 +27,7 @@ ;------------------------------------------------------------------------------ global ASM_PFX(InternalSyncDecrement) ASM_PFX(InternalSyncDecrement): - lock dec dword [rcx] - mov eax, [rcx] + mov eax, 0FFFFFFFFh + lock xadd dword [rcx], eax + dec eax ret - |