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431 lines
14 KiB
431 lines
14 KiB
/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial Usage
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QATOMIC_S390_H
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#define QATOMIC_S390_H
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_ALWAYS_NATIVE
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inline bool QBasicAtomicInt::isReferenceCountingNative()
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{ return true; }
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inline bool QBasicAtomicInt::isReferenceCountingWaitFree()
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{ return false; }
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#define Q_ATOMIC_INT_TEST_AND_SET_IS_ALWAYS_NATIVE
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inline bool QBasicAtomicInt::isTestAndSetNative()
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{ return true; }
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inline bool QBasicAtomicInt::isTestAndSetWaitFree()
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{ return false; }
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#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE
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inline bool QBasicAtomicInt::isFetchAndStoreNative()
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{ return true; }
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inline bool QBasicAtomicInt::isFetchAndStoreWaitFree()
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{ return false; }
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#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_ALWAYS_NATIVE
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inline bool QBasicAtomicInt::isFetchAndAddNative()
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{ return true; }
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inline bool QBasicAtomicInt::isFetchAndAddWaitFree()
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{ return false; }
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#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_ALWAYS_NATIVE
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative()
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{ return true; }
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetWaitFree()
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{ return false; }
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#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_ALWAYS_NATIVE
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreNative()
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{ return true; }
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree()
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{ return false; }
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#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_ALWAYS_NATIVE
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative()
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{ return true; }
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree()
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{ return false; }
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#ifdef __GNUC__
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#define __GNU_EXTENSION __extension__
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#else
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#define __GNU_EXTENSION
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#endif
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#define __CS_LOOP(ptr, op_val, op_string, pre, post) __GNU_EXTENSION ({ \
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volatile int old_val, new_val; \
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__asm__ __volatile__(pre \
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" l %0,0(%3)\n" \
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"0: lr %1,%0\n" \
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op_string " %1,%4\n" \
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" cs %0,%1,0(%3)\n" \
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" jl 0b\n" \
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post \
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: "=&d" (old_val), "=&d" (new_val), \
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"=m" (*ptr) \
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: "a" (ptr), "d" (op_val), \
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"m" (*ptr) \
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: "cc", "memory" ); \
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new_val; \
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})
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#define __CS_OLD_LOOP(ptr, op_val, op_string, pre, post ) __GNU_EXTENSION ({ \
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volatile int old_val, new_val; \
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__asm__ __volatile__(pre \
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" l %0,0(%3)\n" \
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"0: lr %1,%0\n" \
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op_string " %1,%4\n" \
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" cs %0,%1,0(%3)\n" \
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" jl 0b\n" \
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post \
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: "=&d" (old_val), "=&d" (new_val), \
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"=m" (*ptr) \
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: "a" (ptr), "d" (op_val), \
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"m" (*ptr) \
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: "cc", "memory" ); \
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old_val; \
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})
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#ifdef __s390x__
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#define __CSG_OLD_LOOP(ptr, op_val, op_string, pre, post) __GNU_EXTENSION ({ \
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long old_val, new_val; \
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__asm__ __volatile__(pre \
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" lg %0,0(%3)\n" \
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"0: lgr %1,%0\n" \
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op_string " %1,%4\n" \
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" csg %0,%1,0(%3)\n" \
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" jl 0b\n" \
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post \
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: "=&d" (old_val), "=&d" (new_val), \
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"=m" (*ptr) \
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: "a" (ptr), "d" (op_val), \
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"m" (*ptr) \
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: "cc", "memory" ); \
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old_val; \
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})
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#endif
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inline bool QBasicAtomicInt::ref()
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{
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return __CS_LOOP(&_q_value, 1, "ar", "", "") != 0;
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}
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inline bool QBasicAtomicInt::deref()
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{
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return __CS_LOOP(&_q_value, 1, "sr", "", "") != 0;
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}
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inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue)
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{
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int retval;
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__asm__ __volatile__(
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" lr %0,%3\n"
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" cs %0,%4,0(%2)\n"
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" ipm %0\n"
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" srl %0,28\n"
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"0:"
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: "=&d" (retval), "=m" (_q_value)
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: "a" (&_q_value), "d" (expectedValue) , "d" (newValue),
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"m" (_q_value) : "cc", "memory" );
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return retval == 0;
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}
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inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
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{
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int retval;
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__asm__ __volatile__(
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" lr %0,%3\n"
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" cs %0,%4,0(%2)\n"
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" ipm %0\n"
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" srl %0,28\n"
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"0:\n"
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" bcr 15,0\n"
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: "=&d" (retval), "=m" (_q_value)
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: "a" (&_q_value), "d" (expectedValue) , "d" (newValue),
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"m" (_q_value) : "cc", "memory" );
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return retval == 0;
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}
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inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
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{
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int retval;
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__asm__ __volatile__(
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" bcr 15,0\n"
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" lr %0,%3\n"
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" cs %0,%4,0(%2)\n"
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" ipm %0\n"
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" srl %0,28\n"
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"0:"
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: "=&d" (retval), "=m" (_q_value)
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: "a" (&_q_value), "d" (expectedValue) , "d" (newValue),
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"m" (_q_value) : "cc", "memory" );
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return retval == 0;
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}
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inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue)
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{
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return testAndSetAcquire(expectedValue, newValue);
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}
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inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue)
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{
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return __CS_OLD_LOOP(&_q_value, newValue, "lr", "", "");
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}
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inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue)
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{
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return __CS_OLD_LOOP(&_q_value, newValue, "lr", "", "bcr 15,0\n");
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}
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inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue)
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{
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return __CS_OLD_LOOP(&_q_value, newValue, "lr", "bcr 15,0\n", "");
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}
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inline int QBasicAtomicInt::fetchAndStoreOrdered(int newValue)
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{
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return fetchAndStoreAcquire(newValue);
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}
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inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd)
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{
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return fetchAndAddOrdered(valueToAdd);
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}
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inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd)
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{
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return fetchAndAddOrdered(valueToAdd);
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}
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inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd)
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{
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return fetchAndAddOrdered(valueToAdd);
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}
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inline int QBasicAtomicInt::fetchAndAddOrdered(int valueToAdd)
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{
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return __CS_OLD_LOOP(&_q_value, valueToAdd, "ar", "", "bcr 15,0\n");
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}
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValue, T *newValue)
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{
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int retval;
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#ifndef __s390x__
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__asm__ __volatile__(
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" lr %0,%3\n"
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" cs %0,%4,0(%2)\n"
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" ipm %0\n"
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" srl %0,28\n"
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"0:"
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: "=&d" (retval), "=m" (_q_value)
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: "a" (&_q_value), "d" (expectedValue) , "d" (newValue),
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"m" (_q_value) : "cc", "memory" );
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#else
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__asm__ __volatile__(
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" lgr %0,%3\n"
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" csg %0,%4,0(%2)\n"
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" ipm %0\n"
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" srl %0,28\n"
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"0:"
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: "=&d" (retval), "=m" (_q_value)
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: "a" (&_q_value), "d" (expectedValue) , "d" (newValue),
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"m" (_q_value) : "cc", "memory" );
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#endif
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return retval == 0;
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}
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue)
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{
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int retval;
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#ifndef __s390x__
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__asm__ __volatile__(
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" lr %0,%3\n"
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" cs %0,%4,0(%2)\n"
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" ipm %0\n"
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" srl %0,28\n"
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"0:\n"
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" bcr 15,0\n"
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: "=&d" (retval), "=m" (_q_value)
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: "a" (&_q_value), "d" (expectedValue) , "d" (newValue),
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"m" (_q_value) : "cc", "memory" );
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#else
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__asm__ __volatile__(
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" lgr %0,%3\n"
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" csg %0,%4,0(%2)\n"
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" ipm %0\n"
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" srl %0,28\n"
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"0:\n"
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" bcr 15,0\n"
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: "=&d" (retval), "=m" (_q_value)
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: "a" (&_q_value), "d" (expectedValue) , "d" (newValue),
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"m" (_q_value) : "cc", "memory" );
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#endif
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return retval == 0;
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}
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue)
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{
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int retval;
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#ifndef __s390x__
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__asm__ __volatile__(
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" bcr 15,0\n"
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" lr %0,%3\n"
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" cs %0,%4,0(%2)\n"
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" ipm %0\n"
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" srl %0,28\n"
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"0:"
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: "=&d" (retval), "=m" (_q_value)
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: "a" (&_q_value), "d" (expectedValue) , "d" (newValue),
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"m" (_q_value) : "cc", "memory" );
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#else
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__asm__ __volatile__(
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" bcr 15,0\n"
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" lgr %0,%3\n"
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" csg %0,%4,0(%2)\n"
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" ipm %0\n"
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" srl %0,28\n"
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"0:"
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: "=&d" (retval), "=m" (_q_value)
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: "a" (&_q_value), "d" (expectedValue) , "d" (newValue),
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"m" (_q_value) : "cc", "memory" );
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#endif
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return retval == 0;
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}
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue)
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{
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return testAndSetAcquire(expectedValue, newValue);
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}
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template <typename T>
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Q_INLINE_TEMPLATE T* QBasicAtomicPointer<T>::fetchAndStoreRelaxed(T *newValue)
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{
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#ifndef __s390x__
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return (T*)__CS_OLD_LOOP(reinterpret_cast<volatile long*>(_q_value), (int)newValue, "lr",
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"", "bcr 15,0\n");
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#else
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return (T*)__CSG_OLD_LOOP(reinterpret_cast<volatile long*>(_q_value), (long)newValue, "lgr",
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"", "bcr 15,0\n");
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#endif
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}
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template <typename T>
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Q_INLINE_TEMPLATE T* QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue)
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{
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#ifndef __s390x__
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return (T*)__CS_OLD_LOOP(reinterpret_cast<volatile long*>(_q_value), (int)newValue, "lr", "", "");
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#else
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return (T*)__CSG_OLD_LOOP(reinterpret_cast<volatile long*>(_q_value), (long)newValue, "lgr", "", "");
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#endif
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}
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template <typename T>
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Q_INLINE_TEMPLATE T* QBasicAtomicPointer<T>::fetchAndStoreRelease(T *newValue)
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{
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#ifndef __s390x__
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return (T*)__CS_OLD_LOOP(reinterpret_cast<volatile long*>(_q_value), (int)newValue, "lr",
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"bcr 15,0 \n", "");
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#else
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return (T*)__CSG_OLD_LOOP(reinterpret_cast<volatile long*>(_q_value), (long)newValue, "lgr",
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"bcr 15,0\n", "");
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#endif
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}
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template <typename T>
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Q_INLINE_TEMPLATE T* QBasicAtomicPointer<T>::fetchAndStoreOrdered(T *newValue)
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{
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return fetchAndStoreAcquire(newValue);
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}
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template <typename T>
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Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelaxed(qptrdiff valueToAdd)
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{
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return fetchAndAddOrdered(valueToAdd);
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}
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template <typename T>
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Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddAcquire(qptrdiff valueToAdd)
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{
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return fetchAndAddOrdered(valueToAdd);
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}
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template <typename T>
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Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueToAdd)
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{
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return fetchAndAddOrdered(valueToAdd);
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}
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#undef __GNU_EXTENSION
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif // QATOMIC_S390_H
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