1 /* 2 * Copyright (c) 2020, Microsoft Corporation. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef OS_CPU_WINDOWS_AARCH64_ORDERACCESS_WINDOWS_AARCH64_HPP 26 #define OS_CPU_WINDOWS_AARCH64_ORDERACCESS_WINDOWS_AARCH64_HPP 27 28 // Included in orderAccess.hpp header file. 29 30 #include <intrin.h> 31 #include "vm_version_aarch64.hpp" 32 #include "runtime/vm_version.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 _ReadBarrier(); 43 __dmb(_ARM64_BARRIER_ISHLD); 44 } 45 46 inline void OrderAccess::release() { 47 _WriteBarrier(); 48 __dmb(_ARM64_BARRIER_ISHST); 49 } 50 51 inline void OrderAccess::fence() { 52 _ReadWriteBarrier(); 53 __dmb(_ARM64_BARRIER_ISH); 54 } 55 56 inline void OrderAccess::cross_modify_fence() { } 57 58 #endif // OS_CPU_WINDOWS_AARCH64_ORDERACCESS_WINDOWS_AARCH64_HPP