diff options
Diffstat (limited to 'src/corelib/arch/qatomic_armv7.h')
-rw-r--r-- | src/corelib/arch/qatomic_armv7.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/corelib/arch/qatomic_armv7.h b/src/corelib/arch/qatomic_armv7.h new file mode 100644 index 0000000000..b35866b32c --- /dev/null +++ b/src/corelib/arch/qatomic_armv7.h @@ -0,0 +1,61 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QATOMIC_ARMV7_H +#define QATOMIC_ARMV7_H + +QT_BEGIN_HEADER + +// use the DMB instruction when compiling for ARMv7, ... +#ifndef Q_CC_RCVT +# define Q_DATA_MEMORY_BARRIER asm volatile("dmb\n":::"memory") +#else +# define Q_DATA_MEMORY_BARRIER do{__asm { dmb } __schedule_barrier();}while(0) +#endif + +// ... but the implementation is otherwise identical to that for ARMv6 +QT_BEGIN_INCLUDE_HEADER +#include "QtCore/qatomic_armv6.h" +QT_END_INCLUDE_HEADER + +QT_END_HEADER + +#endif // QATOMIC_ARMV7_H |