| /* |
| * Copyright (c) 2018, Oracle and/or its affiliates. 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. |
| * |
| */ |
| |
| package sun.jvm.hotspot.gc.z; |
| |
| import sun.jvm.hotspot.debugger.Address; |
| import sun.jvm.hotspot.runtime.VM; |
| |
| class ZAddress { |
| static long as_long(Address value) { |
| if (value == null) { |
| return 0; |
| } |
| return value.asLongValue(); |
| }; |
| |
| static boolean is_null(Address value) { |
| return value == null; |
| } |
| |
| static boolean is_weak_bad(Address value) { |
| return (as_long(value) & ZGlobals.ZAddressWeakBadMask()) != 0; |
| } |
| |
| static boolean is_weak_good(Address value) { |
| return !is_weak_bad(value) && !is_null(value); |
| } |
| |
| static boolean is_weak_good_or_null(Address value) { |
| return !is_weak_bad(value); |
| } |
| |
| static long offset(Address address) { |
| return as_long(address) & ZGlobals.ZAddressOffsetMask; |
| } |
| |
| static Address address(long value) { |
| VM vm = VM.getVM(); |
| if (vm.getOS().equals("solaris") && vm.getCPU().equals("sparc")) { |
| value |= ZGlobals.ZAddressSpaceStart; |
| } |
| |
| return ZOop.to_address(value); |
| } |
| |
| static Address good(Address value) { |
| return address(offset(value) | ZGlobals.ZAddressGoodMask()); |
| } |
| |
| static Address good_or_null(Address value) { |
| return is_null(value) ? value : good(value); |
| } |
| } |