/*

 * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.

 * Copyright (c) 2014, Red Hat Inc. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

#ifndef OS_CPU_LINUX_AARCH64_ORDERACCESS_LINUX_AARCH64_HPP

#define OS_CPU_LINUX_AARCH64_ORDERACCESS_LINUX_AARCH64_HPP

// Included in orderAccess.hpp header file.

#include "vm_version_aarch64.hpp"

// Implementation of class OrderAccess.

inline void OrderAccess::loadload()   { acquire(); }

inline void OrderAccess::storestore() { release(); }

inline void OrderAccess::loadstore()  { acquire(); }

inline void OrderAccess::storeload()  { fence(); }

inline void OrderAccess::acquire() {

  READ_MEM_BARRIER;

}

inline void OrderAccess::release() {

  WRITE_MEM_BARRIER;

}

inline void OrderAccess::fence() {

  FULL_MEM_BARRIER;

}

inline void OrderAccess::cross_modify_fence() { }

template<size_t byte_size>

struct OrderAccess::PlatformOrderedLoad<byte_size, X_ACQUIRE>

{

  template <typename T>

  T operator()(const volatile T* p) const { T data; __atomic_load(p, &data, __ATOMIC_ACQUIRE); return data; }

};

template<size_t byte_size>

struct OrderAccess::PlatformOrderedStore<byte_size, RELEASE_X>

{

  template <typename T>

  void operator()(T v, volatile T* p) const { __atomic_store(p, &v, __ATOMIC_RELEASE); }

};

template<size_t byte_size>

struct OrderAccess::PlatformOrderedStore<byte_size, RELEASE_X_FENCE>

{

  template <typename T>

  void operator()(T v, volatile T* p) const { release_store(p, v); fence(); }

};

#endif // OS_CPU_LINUX_AARCH64_ORDERACCESS_LINUX_AARCH64_HPP