Revision: 14517
http://sourceforge.net/p/edk2/code/14517
Author: oliviermartin
Date: 2013-07-29 09:57:43 +0000 (Mon, 29 Jul 2013)
Log Message:
-----------
MdePkg/BaseSynchronizationLib: Added ARM Aarch64 architecture support
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Harry Liebel <[email protected]>
Signed-off-by: Olivier Martin <[email protected]>
Reviewed-by: Liming Gao <[email protected]>
Modified Paths:
--------------
trunk/edk2/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf
Added Paths:
-----------
trunk/edk2/MdePkg/Library/BaseSynchronizationLib/AArch64/
trunk/edk2/MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.c
Added:
trunk/edk2/MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.c
===================================================================
--- trunk/edk2/MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.c
(rev 0)
+++ trunk/edk2/MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.c
2013-07-29 09:57:43 UTC (rev 14517)
@@ -0,0 +1,115 @@
+/** @file
+ Implementation of synchronization functions. Still needs to be ported
+
+ Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+ Portions copyright (c) 2008 - 2009, Apple Inc. 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 32-bit unsigned integer.
+
+ Performs an atomic compare exchange operation on the 32-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 32-bit value for the compare exchange
+ operation.
+ @param CompareValue 32-bit value used in compare operation.
+ @param ExchangeValue 32-bit value used in exchange operation.
+
+ @return The original *Value before exchange.
+
+**/
+UINT32
+EFIAPI
+InternalSyncCompareExchange32 (
+ IN volatile UINT32 *Value,
+ IN UINT32 CompareValue,
+ IN UINT32 ExchangeValue
+ )
+{
+ return *Value != CompareValue ? *Value :
+ ((*Value = ExchangeValue), CompareValue);
+}
+
+/**
+ 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 64-bit value used in compare operation.
+ @param ExchangeValue 64-bit value used in exchange operation.
+
+ @return The original *Value before exchange.
+
+**/
+UINT64
+EFIAPI
+InternalSyncCompareExchange64 (
+ IN volatile UINT64 *Value,
+ IN UINT64 CompareValue,
+ IN UINT64 ExchangeValue
+ )
+{
+ return *Value != CompareValue ? *Value :
+ ((*Value = ExchangeValue), CompareValue);
+}
+
+/**
+ Performs an atomic increment of an 32-bit unsigned integer.
+
+ Performs an atomic increment of the 32-bit unsigned integer specified by
+ Value and returns the incremented value. The increment operation must be
+ performed using MP safe mechanisms. The state of the return value is not
+ guaranteed to be MP safe.
+
+ @param Value A pointer to the 32-bit value to increment.
+
+ @return The incremented value.
+
+**/
+UINT32
+EFIAPI
+InternalSyncIncrement (
+ IN volatile UINT32 *Value
+ )
+{
+ return ++*Value;
+}
+
+/**
+ Performs an atomic decrement of an 32-bit unsigned integer.
+
+ Performs an atomic decrement of the 32-bit unsigned integer specified by
+ Value and returns the decrement value. The decrement operation must be
+ performed using MP safe mechanisms. The state of the return value is not
+ guaranteed to be MP safe.
+
+ @param Value A pointer to the 32-bit value to decrement.
+
+ @return The decrement value.
+
+**/
+UINT32
+EFIAPI
+InternalSyncDecrement (
+ IN volatile UINT32 *Value
+ )
+{
+ return --*Value;
+}
Modified:
trunk/edk2/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf
===================================================================
--- trunk/edk2/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf
2013-07-29 09:56:36 UTC (rev 14516)
+++ trunk/edk2/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf
2013-07-29 09:57:43 UTC (rev 14517)
@@ -23,7 +23,7 @@
LIBRARY_CLASS = SynchronizationLib
#
-# VALID_ARCHITECTURES = IA32 X64 IPF EBC ARM
+# VALID_ARCHITECTURES = IA32 X64 IPF EBC ARM AARCH64
#
[Sources]
BaseSynchronizationLibInternals.h
@@ -79,6 +79,10 @@
Synchronization.c
Arm/Synchronization.c
+[Sources.AARCH64]
+ Synchronization.c
+ AArch64/Synchronization.c
+
[Packages]
MdePkg/MdePkg.dec
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