1 /* 2 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. 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 package sun.jvm.hotspot.opto; 26 27 import java.io.PrintStream; 28 import java.util.*; 29 import sun.jvm.hotspot.debugger.*; 30 import sun.jvm.hotspot.runtime.*; 31 import sun.jvm.hotspot.oops.*; 32 import sun.jvm.hotspot.ci.*; 33 import sun.jvm.hotspot.types.*; 34 35 public class JVMState extends VMObject { 36 static { 37 VM.registerVMInitializedObserver(new Observer() { 38 public void update(Observable o, Object data) { 39 initialize(VM.getVM().getTypeDataBase()); 40 } 41 }); 42 } 43 44 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { 45 Type type = db.lookupType("JVMState"); 46 mapField = type.getAddressField("_map"); 47 methodField = type.getAddressField("_method"); 48 bciField = new CIntField(type.getCIntegerField("_bci"), 0); 49 spField = new CIntField(type.getCIntegerField("_sp"), 0); 50 endoffField = new CIntField(type.getCIntegerField("_endoff"), 0); 51 try { 52 scloffField = new CIntField(type.getCIntegerField("_scloff"), 0); 53 } catch (Exception e) { 54 } 55 monoffField = new CIntField(type.getCIntegerField("_monoff"), 0); 56 stkoffField = new CIntField(type.getCIntegerField("_stkoff"), 0); 57 locoffField = new CIntField(type.getCIntegerField("_locoff"), 0); 58 depthField = new CIntField(type.getCIntegerField("_depth"), 0); 59 callerField = type.getAddressField("_caller"); 60 } 61 62 private static AddressField mapField; 63 private static AddressField methodField; 64 private static CIntField bciField; 65 private static CIntField spField; 66 private static CIntField endoffField; 67 private static CIntField scloffField; 68 private static CIntField monoffField; 69 private static CIntField stkoffField; 70 private static CIntField locoffField; 71 private static CIntField depthField; 72 private static AddressField callerField; 73 74 public static JVMState create(Address addr) { 75 if (addr == null) return null; 76 return new JVMState(addr); 77 } 78 79 public JVMState(Address addr) { 80 super(addr); 81 } 82 83 public ciMethod method() { 84 return (ciMethod) ciObjectFactory.getMetadata(methodField.getValue(getAddress())); 85 } 86 87 public int bci() { 88 return (int)bciField.getValue(getAddress()); 89 } 90 91 public JVMState caller() { 92 return create(callerField.getValue(getAddress())); 93 } 94 95 public void dumpSpec(PrintStream out) { 96 ciMethod m = method(); 97 if (m != null) { 98 Method meth = m.method(); 99 out.print(" " + meth.getMethodHolder().getName().asString().replace('/', '.') + "::" + 100 meth.getName().asString() + " @ bci:" + bci()); 101 } else { 102 out.print(" runtime stub"); 103 } 104 if (caller() != null) caller().dumpSpec(out); 105 } 106 }