text: /*
   * 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
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   *
   */
  
  #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
  