492 lines
15 KiB
Diff
492 lines
15 KiB
Diff
From 294010b562c9846bb2bc4ee9c63ff78adc7c1f4f Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Lisandro=20Dami=C3=A1n=20Nicanor=20P=C3=A9rez=20Meyer?=
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<perezmeyer@gmail.com>
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Date: Sat, 15 Mar 2014 15:40:49 -0300
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Subject: [PATCH] Add qatomic support for AArch64 (aka arm64).
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Patch by Mark Salter <msalter@redhat.com>
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licensed under BSD:
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<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=735488#195>
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This patch is known to not be the most correct way
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to implement them, as it seems to be possible to do it in a faster way,
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but should work non the less until we can provide something better.
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Change-Id: Ib392b27dc54691fd4c2ea9896240ad71fb8128cc
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Upstream-Status: Pending
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Signed-off-by: Kai Kang <kai.kang@windriver.com>
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---
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src/corelib/arch/aarch64/arch.pri | 4 +
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src/corelib/arch/aarch64/qatomic_aarch64.cpp | 70 ++++++
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src/corelib/arch/arch.pri | 4 +-
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src/corelib/arch/qatomic_aarch64.h | 335 +++++++++++++++++++++++++++
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src/corelib/arch/qatomic_arch.h | 2 +
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5 files changed, 414 insertions(+), 1 deletion(-)
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create mode 100644 src/corelib/arch/aarch64/arch.pri
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create mode 100644 src/corelib/arch/aarch64/qatomic_aarch64.cpp
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create mode 100644 src/corelib/arch/qatomic_aarch64.h
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diff --git a/src/corelib/arch/aarch64/arch.pri b/src/corelib/arch/aarch64/arch.pri
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new file mode 100644
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index 0000000..63523d9
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--- /dev/null
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+++ b/src/corelib/arch/aarch64/arch.pri
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@@ -0,0 +1,4 @@
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+#
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+# AArch64 architecture
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+#
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+SOURCES += $$QT_ARCH_CPP/qatomic_aarch64.cpp
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diff --git a/src/corelib/arch/aarch64/qatomic_aarch64.cpp b/src/corelib/arch/aarch64/qatomic_aarch64.cpp
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new file mode 100644
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index 0000000..fc851b9
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--- /dev/null
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+++ b/src/corelib/arch/aarch64/qatomic_aarch64.cpp
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@@ -0,0 +1,70 @@
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+/****************************************************************************
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+**
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+** Copyright (C) 2012, 2013 Digia Plc and/or its subsidiary(-ies).
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+** Contact: http://www.qt-project.org/legal
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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 License Usage
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+** Licensees holding valid commercial Qt licenses may use this file in
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+** accordance with the 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 Digia. For licensing terms and
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+** conditions see http://qt.digia.com/licensing. For further information
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+** use the contact form at http://qt.digia.com/contact-us.
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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, Digia gives you certain additional
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+** rights. These rights are described in the Digia 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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+**
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+** $QT_END_LICENSE$
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+**
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+****************************************************************************/
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+
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+#include <QtCore/qglobal.h>
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+
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+#include <unistd.h>
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+#ifdef _POSIX_PRIORITY_SCHEDULING
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+# include <sched.h>
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+#endif
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+#include <time.h>
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+
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+QT_BEGIN_NAMESPACE
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+
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+QT_USE_NAMESPACE
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+
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+Q_CORE_EXPORT void qt_atomic_yield(int *count)
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+{
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+#ifdef _POSIX_PRIORITY_SCHEDULING
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+ if ((*count)++ < 50) {
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+ sched_yield();
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+ } else
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+#endif
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+ {
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+ struct timespec tm;
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+ tm.tv_sec = 0;
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+ tm.tv_nsec = 2000001;
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+ nanosleep(&tm, NULL);
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+ *count = 0;
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+ }
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+}
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+
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+QT_END_NAMESPACE
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diff --git a/src/corelib/arch/arch.pri b/src/corelib/arch/arch.pri
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index cd23e5e..f50fca7 100644
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--- a/src/corelib/arch/arch.pri
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+++ b/src/corelib/arch/arch.pri
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@@ -31,7 +31,9 @@ integrity:HEADERS += arch/qatomic_integrity.h
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arch/qatomic_s390.h \
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arch/qatomic_x86_64.h \
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arch/qatomic_sh.h \
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- arch/qatomic_sh4a.h
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+ arch/qatomic_sh4a.h \
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+ arch/qatomic_aarch64.h \
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+
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QT_ARCH_CPP = $$QT_SOURCE_TREE/src/corelib/arch/$$QT_ARCH
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DEPENDPATH += $$QT_ARCH_CPP
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diff --git a/src/corelib/arch/qatomic_aarch64.h b/src/corelib/arch/qatomic_aarch64.h
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new file mode 100644
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index 0000000..de61ca8
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--- /dev/null
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+++ b/src/corelib/arch/qatomic_aarch64.h
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@@ -0,0 +1,335 @@
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+/****************************************************************************
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+**
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+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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+** Contact: http://www.qt-project.org/legal
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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 License Usage
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+** Licensees holding valid commercial Qt licenses may use this file in
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+** accordance with the 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 Digia. For licensing terms and
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+** conditions see http://qt.digia.com/licensing. For further information
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+** use the contact form at http://qt.digia.com/contact-us.
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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, Digia gives you certain additional
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+** rights. These rights are described in the Digia 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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+**
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+** $QT_END_LICENSE$
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+**
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+****************************************************************************/
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+
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+#ifndef QATOMIC_AARCH64_H
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+#define QATOMIC_AARCH64_H
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+
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+QT_BEGIN_HEADER
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+
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+QT_BEGIN_NAMESPACE
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+
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+#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_ALWAYS_NATIVE
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+
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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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+
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+#define Q_ATOMIC_INT_TEST_AND_SET_IS_ALWAYS_NATIVE
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+
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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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+
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+#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE
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+
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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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+
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+#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_ALWAYS_NATIVE
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+
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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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+
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+#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_ALWAYS_NATIVE
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+
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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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+
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+#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_ALWAYS_NATIVE
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+
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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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+
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+#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_ALWAYS_NATIVE
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+
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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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+
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+#ifndef Q_DATA_MEMORY_BARRIER
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+# define Q_DATA_MEMORY_BARRIER asm volatile("dmb sy\n":::"memory")
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+#endif
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+#ifndef Q_COMPILER_MEMORY_BARRIER
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+# define Q_COMPILER_MEMORY_BARRIER asm volatile("":::"memory")
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+#endif
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+
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+inline bool QBasicAtomicInt::ref()
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+{
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+ int newValue;
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+
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+ Q_COMPILER_MEMORY_BARRIER;
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+ newValue = __atomic_add_fetch(&_q_value, 1, __ATOMIC_ACQ_REL);
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+ Q_COMPILER_MEMORY_BARRIER;
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+
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+ return newValue != 0;
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+}
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+
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+inline bool QBasicAtomicInt::deref()
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+{
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+ int newValue;
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+
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+ Q_COMPILER_MEMORY_BARRIER;
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+ newValue = __atomic_sub_fetch(&_q_value, 1, __ATOMIC_ACQ_REL);
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+ Q_COMPILER_MEMORY_BARRIER;
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+
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+ return newValue != 0;
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+}
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+
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+inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue)
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+{
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+ bool val;
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+
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+ Q_COMPILER_MEMORY_BARRIER;
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+ val = __atomic_compare_exchange_n (&_q_value, &expectedValue, newValue,
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+ false, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
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+ Q_COMPILER_MEMORY_BARRIER;
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+ return val;
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+}
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+
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+inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue)
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+{
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+ int val;
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+ Q_COMPILER_MEMORY_BARRIER;
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+ val = __atomic_exchange_n(&_q_value, newValue, __ATOMIC_RELAXED);
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+ Q_COMPILER_MEMORY_BARRIER;
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+ return val;
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+}
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+
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+inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd)
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+{
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+ int val;
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+ Q_COMPILER_MEMORY_BARRIER;
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+ val = __atomic_fetch_add(&_q_value, valueToAdd, __ATOMIC_RELAXED);
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+ Q_COMPILER_MEMORY_BARRIER;
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+ return val;
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+}
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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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+ bool val;
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+ Q_COMPILER_MEMORY_BARRIER;
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+ val = __atomic_compare_exchange_n (&_q_value, &expectedValue, newValue,
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+ false, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
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+ Q_COMPILER_MEMORY_BARRIER;
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+ return val;
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+}
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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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+ T *val;
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+ Q_COMPILER_MEMORY_BARRIER;
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+ val = __atomic_exchange_n(&_q_value, newValue, __ATOMIC_RELAXED);
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+ Q_COMPILER_MEMORY_BARRIER;
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+ return val;
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+}
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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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+ T *val;
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+ Q_COMPILER_MEMORY_BARRIER;
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+ val = __atomic_fetch_add(&_q_value, valueToAdd, __ATOMIC_RELAXED);
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+ Q_COMPILER_MEMORY_BARRIER;
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+ return val;
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+}
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+
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+inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
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+{
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+ bool returnValue = testAndSetRelaxed(expectedValue, newValue);
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+ Q_DATA_MEMORY_BARRIER;
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+ return returnValue;
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+}
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+
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+inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
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+{
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+ Q_DATA_MEMORY_BARRIER;
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+ return testAndSetRelaxed(expectedValue, newValue);
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+}
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+
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+inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue)
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+{
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+ Q_DATA_MEMORY_BARRIER;
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+ bool returnValue = testAndSetRelaxed(expectedValue, newValue);
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+ Q_COMPILER_MEMORY_BARRIER;
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+ return returnValue;
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+}
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+
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+inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue)
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+{
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+ int returnValue = fetchAndStoreRelaxed(newValue);
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+ Q_DATA_MEMORY_BARRIER;
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+ return returnValue;
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+}
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+
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+inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue)
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+{
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+ Q_DATA_MEMORY_BARRIER;
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+ return fetchAndStoreRelaxed(newValue);
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+}
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+
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+inline int QBasicAtomicInt::fetchAndStoreOrdered(int newValue)
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+{
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+ Q_DATA_MEMORY_BARRIER;
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+ int returnValue = fetchAndStoreRelaxed(newValue);
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+ Q_COMPILER_MEMORY_BARRIER;
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+ return returnValue;
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+}
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+
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+inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd)
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+{
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+ int returnValue = fetchAndAddRelaxed(valueToAdd);
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+ Q_DATA_MEMORY_BARRIER;
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+ return returnValue;
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+}
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+
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+inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd)
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+{
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+ Q_DATA_MEMORY_BARRIER;
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+ return fetchAndAddRelaxed(valueToAdd);
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+}
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+
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+inline int QBasicAtomicInt::fetchAndAddOrdered(int valueToAdd)
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+{
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+ Q_DATA_MEMORY_BARRIER;
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+ int returnValue = fetchAndAddRelaxed(valueToAdd);
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+ Q_COMPILER_MEMORY_BARRIER;
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+ return returnValue;
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+}
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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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+ bool returnValue = testAndSetRelaxed(expectedValue, newValue);
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+ Q_DATA_MEMORY_BARRIER;
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+ return returnValue;
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+}
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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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+ Q_DATA_MEMORY_BARRIER;
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+ return testAndSetRelaxed(expectedValue, newValue);
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+}
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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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+ Q_DATA_MEMORY_BARRIER;
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+ bool returnValue = testAndSetAcquire(expectedValue, newValue);
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+ Q_COMPILER_MEMORY_BARRIER;
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+ return returnValue;
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+}
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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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+ T *returnValue = fetchAndStoreRelaxed(newValue);
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+ Q_DATA_MEMORY_BARRIER;
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+ return returnValue;
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+}
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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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+ Q_DATA_MEMORY_BARRIER;
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+ return fetchAndStoreRelaxed(newValue);
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+}
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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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+ Q_DATA_MEMORY_BARRIER;
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+ T *returnValue = fetchAndStoreRelaxed(newValue);
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+ Q_COMPILER_MEMORY_BARRIER;
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+ return returnValue;
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+}
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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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+ T *returnValue = fetchAndAddRelaxed(valueToAdd);
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+ Q_DATA_MEMORY_BARRIER;
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+ return returnValue;
|
|
+}
|
|
+
|
|
+template <typename T>
|
|
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueToAdd)
|
|
+{
|
|
+ Q_DATA_MEMORY_BARRIER;
|
|
+ return fetchAndAddRelaxed(valueToAdd);
|
|
+}
|
|
+
|
|
+template <typename T>
|
|
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddOrdered(qptrdiff valueToAdd)
|
|
+{
|
|
+ Q_DATA_MEMORY_BARRIER;
|
|
+ T *returnValue = fetchAndAddRelaxed(valueToAdd);
|
|
+ Q_COMPILER_MEMORY_BARRIER;
|
|
+ return returnValue;
|
|
+}
|
|
+
|
|
+#undef Q_DATA_MEMORY_BARRIER
|
|
+#undef Q_COMPILER_MEMORY_BARRIER
|
|
+
|
|
+QT_END_NAMESPACE
|
|
+
|
|
+QT_END_HEADER
|
|
+
|
|
+#endif // QATOMIC_AARCH64_H
|
|
diff --git a/src/corelib/arch/qatomic_arch.h b/src/corelib/arch/qatomic_arch.h
|
|
index 141726c..3e96926 100644
|
|
--- a/src/corelib/arch/qatomic_arch.h
|
|
+++ b/src/corelib/arch/qatomic_arch.h
|
|
@@ -94,6 +94,8 @@ QT_BEGIN_HEADER
|
|
# include "QtCore/qatomic_sh4a.h"
|
|
#elif defined(QT_ARCH_NACL)
|
|
# include "QtCore/qatomic_generic.h"
|
|
+#elif defined(QT_ARCH_AARCH64)
|
|
+# include "QtCore/qatomic_aarch64.h"
|
|
#else
|
|
# error "Qt has not been ported to this architecture"
|
|
#endif
|
|
--
|
|
2.1.0
|
|
|