diff options
Diffstat (limited to 'OldMdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange32.c')
-rw-r--r-- | OldMdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange32.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/OldMdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange32.c b/OldMdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange32.c new file mode 100644 index 0000000000..07be35e1df --- /dev/null +++ b/OldMdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange32.c @@ -0,0 +1,30 @@ +/** @file
+ InterlockedCompareExchange32 function
+
+ Copyright (c) 2006 - 2007, Intel Corporation<BR>
+ 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.
+
+**/
+
+UINT32
+EFIAPI
+InternalSyncCompareExchange32 (
+ IN UINT32 *Value,
+ IN UINT32 CompareValue,
+ IN UINT32 ExchangeValue
+ )
+{
+ _asm {
+ mov ecx, Value
+ mov eax, CompareValue
+ mov edx, ExchangeValue
+ lock cmpxchg [ecx], edx
+ }
+}
+
|