From bf6ee6c7c33cf280cdfb2fd0e6b66a712b7aa4a1 Mon Sep 17 00:00:00 2001 From: Harry Liebel Date: Mon, 29 Jul 2013 09:57:43 +0000 Subject: [PATCH] MdePkg/BaseSynchronizationLib: Added ARM Aarch64 architecture support Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Harry Liebel Signed-off-by: Olivier Martin Reviewed-by: Liming Gao git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14517 6f19259b-4bc3-4df7-8a09-765794883524 --- .../AArch64/Synchronization.c | 115 ++++++++++++++++++ .../BaseSynchronizationLib.inf | 6 +- 2 files changed, 120 insertions(+), 1 deletion(-) create mode 100644 MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.c diff --git a/MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.c b/MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.c new file mode 100644 index 0000000000..2e619ccf87 --- /dev/null +++ b/MdePkg/Library/BaseSynchronizationLib/AArch64/Synchronization.c @@ -0,0 +1,115 @@ +/** @file + Implementation of synchronization functions. Still needs to be ported + + Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.
+ Portions copyright (c) 2008 - 2009, Apple Inc. 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. + +**/ + +/** + 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; +} diff --git a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf index 4c53961704..b9965401fb 100644 --- a/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf +++ b/MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf @@ -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 -- 2.39.2