diff options
Diffstat (limited to 'MdePkg/Library/BaseSynchronizationLib/Ia32/InterlockedCompareExchange64.c')
-rw-r--r-- | MdePkg/Library/BaseSynchronizationLib/Ia32/InterlockedCompareExchange64.c | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/MdePkg/Library/BaseSynchronizationLib/Ia32/InterlockedCompareExchange64.c b/MdePkg/Library/BaseSynchronizationLib/Ia32/InterlockedCompareExchange64.c deleted file mode 100644 index 73af6ef91a..0000000000 --- a/MdePkg/Library/BaseSynchronizationLib/Ia32/InterlockedCompareExchange64.c +++ /dev/null @@ -1,50 +0,0 @@ -/** @file
- InterlockedCompareExchange64 function
-
- Copyright (c) 2006 - 2010, 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.
-
-**/
-
-
-
-
-/**
- Performs an atomic compare exchange operation on a 64-bit unsigned integer.
-
- Performs an atomic compare exchange operation on the 64-bit unsigned integer specified
- by Value. If Value is equal to CompareValue, then Value is set to ExchangeValue and
- CompareValue is returned. If Value is not equal to CompareValue, then Value is returned.
- The compare exchange operation must be performed using MP safe mechanisms.
-
- @param Value A pointer to the 64-bit value for the compare exchange
- operation.
- @param CompareValue A 64-bit value used in a compare operation.
- @param ExchangeValue A 64-bit value used in an exchange operation.
-
- @return The original *Value before exchange.
-
-**/
-UINT64
-EFIAPI
-InternalSyncCompareExchange64 (
- IN UINT64 *Value,
- IN UINT64 CompareValue,
- IN UINT64 ExchangeValue
- )
-{
- _asm {
- mov esi, Value
- mov eax, dword ptr [CompareValue + 0]
- mov edx, dword ptr [CompareValue + 4]
- mov ebx, dword ptr [ExchangeValue + 0]
- mov ecx, dword ptr [ExchangeValue + 4]
- lock cmpxchg8b qword ptr [esi]
- }
-}
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