6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #ifndef OS_CPU_LINUX_AARCH64_VM_ORDERACCESS_LINUX_AARCH64_INLINE_HPP
  27 #define OS_CPU_LINUX_AARCH64_VM_ORDERACCESS_LINUX_AARCH64_INLINE_HPP
  28 
  29 #include "runtime/atomic.hpp"
  30 #include "runtime/orderAccess.hpp"
  31 #include "runtime/os.hpp"
  32 #include "vm_version_aarch64.hpp"
  33 
  34 // Implementation of class OrderAccess.
  35 
  36 inline void OrderAccess::loadload()   { acquire(); }
  37 inline void OrderAccess::storestore() { release(); }
  38 inline void OrderAccess::loadstore()  { acquire(); }
  39 inline void OrderAccess::storeload()  { fence(); }
  40 
  41 inline void OrderAccess::acquire() {
  42   READ_MEM_BARRIER;
  43 }
  44 
  45 inline void OrderAccess::release() {
  46   WRITE_MEM_BARRIER;
  47 }
  48 
  49 inline void OrderAccess::fence() {
  50   FULL_MEM_BARRIER;
  51 }

  54 struct OrderAccess::PlatformOrderedLoad<byte_size, X_ACQUIRE>
  55 {
  56   template <typename T>
  57   T operator()(const volatile T* p) const { T data; __atomic_load(p, &data, __ATOMIC_ACQUIRE); return data; }
  58 };
  59 
  60 template<size_t byte_size>
  61 struct OrderAccess::PlatformOrderedStore<byte_size, RELEASE_X>
  62 {
  63   template <typename T>
  64   void operator()(T v, volatile T* p) const { __atomic_store(p, &v, __ATOMIC_RELEASE); }
  65 };
  66 
  67 template<size_t byte_size>
  68 struct OrderAccess::PlatformOrderedStore<byte_size, RELEASE_X_FENCE>
  69 {
  70   template <typename T>
  71   void operator()(T v, volatile T* p) const { release_store(p, v); fence(); }
  72 };
  73 
  74 #endif // OS_CPU_LINUX_AARCH64_VM_ORDERACCESS_LINUX_AARCH64_INLINE_HPP

   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #ifndef OS_CPU_LINUX_AARCH64_VM_ORDERACCESS_LINUX_AARCH64_HPP
  27 #define OS_CPU_LINUX_AARCH64_VM_ORDERACCESS_LINUX_AARCH64_HPP
  28 
  29 #include "runtime/atomic.hpp"
  30 #include "runtime/orderAccess.hpp"

  31 #include "vm_version_aarch64.hpp"
  32 
  33 // Implementation of class OrderAccess.
  34 
  35 inline void OrderAccess::loadload()   { acquire(); }
  36 inline void OrderAccess::storestore() { release(); }
  37 inline void OrderAccess::loadstore()  { acquire(); }
  38 inline void OrderAccess::storeload()  { fence(); }
  39 
  40 inline void OrderAccess::acquire() {
  41   READ_MEM_BARRIER;
  42 }
  43 
  44 inline void OrderAccess::release() {
  45   WRITE_MEM_BARRIER;
  46 }
  47 
  48 inline void OrderAccess::fence() {
  49   FULL_MEM_BARRIER;
  50 }

  53 struct OrderAccess::PlatformOrderedLoad<byte_size, X_ACQUIRE>
  54 {
  55   template <typename T>
  56   T operator()(const volatile T* p) const { T data; __atomic_load(p, &data, __ATOMIC_ACQUIRE); return data; }
  57 };
  58 
  59 template<size_t byte_size>
  60 struct OrderAccess::PlatformOrderedStore<byte_size, RELEASE_X>
  61 {
  62   template <typename T>
  63   void operator()(T v, volatile T* p) const { __atomic_store(p, &v, __ATOMIC_RELEASE); }
  64 };
  65 
  66 template<size_t byte_size>
  67 struct OrderAccess::PlatformOrderedStore<byte_size, RELEASE_X_FENCE>
  68 {
  69   template <typename T>
  70   void operator()(T v, volatile T* p) const { release_store(p, v); fence(); }
  71 };
  72 
  73 #endif // OS_CPU_LINUX_AARCH64_VM_ORDERACCESS_LINUX_AARCH64_HPP