sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Split out Synchronization Library from Base Library

Browse Source 
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7377 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
mdkinney
2009-01-30 00:45:13 +00:00
parent 914826ba1d
commit 720d3c5fb3
39 changed files with 2953 additions and 387 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
MdePkg/Library/BaseSynchronizationLib/Ipf/InterlockedCompareExchange32.s Normal file
View File

@@ -0,0 +1,29 @@
/// @file
/// Contains an implementation of InterlockedCompareExchange32 on Itanium-
/// based architecture.
///
/// Copyright (c) 2006 - 2008, Intel Corporation
/// 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.
///
/// Module Name: InterlockedCompareExchange32.s
///
///
.auto
.text
.proc InternalSyncCompareExchange32
.type InternalSyncCompareExchange32, @function
InternalSyncCompareExchange32::
zxt4 r33 = r33
mov ar.ccv = r33
cmpxchg4.rel r8 = [r32], r34
mf
br.ret.sptk.many b0
.endp InternalSyncCompareExchange32

28
MdePkg/Library/BaseSynchronizationLib/Ipf/InterlockedCompareExchange64.s Normal file
View File

@@ -0,0 +1,28 @@
/// @file
/// Contains an implementation of InterlockedCompareExchange64 on Itanium-
/// based architecture.
///
/// Copyright (c) 2006 - 2008, Intel Corporation
/// 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.
///
/// Module Name: InterlockedCompareExchange64.s
///
///
.auto
.text
.proc InternalSyncCompareExchange64
.type InternalSyncCompareExchange64, @function
InternalSyncCompareExchange64::
mov ar.ccv = r33
cmpxchg8.rel r8 = [r32], r34
mf
br.ret.sptk.many b0
.endp InternalSyncCompareExchange64

77
MdePkg/Library/BaseSynchronizationLib/Ipf/Synchronization.c Normal file
View File

@@ -0,0 +1,77 @@
/** @file
Implementation of synchronization functions on Itanium.
Copyright (c) 2006, 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.
**/
#include "BaseSynchronizationLibInternals.h"
/**
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
)
{
UINT32 OriginalValue;
do {
OriginalValue = *Value;
} while (OriginalValue != InternalSyncCompareExchange32 (
Value,
OriginalValue,
OriginalValue + 1
));
return OriginalValue + 1;
}
/**
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
)
{
UINT32 OriginalValue;
do {
OriginalValue = *Value;
} while (OriginalValue != InternalSyncCompareExchange32 (
Value,
OriginalValue,
OriginalValue - 1
));
return OriginalValue - 1;
}