3939
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1 /*
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2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.opto;
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26
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27 import java.io.PrintStream;
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28 import java.util.*;
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29 import sun.jvm.hotspot.debugger.*;
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30 import sun.jvm.hotspot.runtime.*;
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31 import sun.jvm.hotspot.oops.*;
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32 import sun.jvm.hotspot.ci.*;
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33 import sun.jvm.hotspot.types.*;
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34
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35 public class JVMState extends VMObject {
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36 static {
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37 VM.registerVMInitializedObserver(new Observer() {
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38 public void update(Observable o, Object data) {
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39 initialize(VM.getVM().getTypeDataBase());
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40 }
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41 });
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42 }
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43
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44 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
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45 Type type = db.lookupType("JVMState");
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46 mapField = type.getAddressField("_map");
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47 methodField = type.getAddressField("_method");
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48 bciField = new CIntField(type.getCIntegerField("_bci"), 0);
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49 spField = new CIntField(type.getCIntegerField("_sp"), 0);
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50 endoffField = new CIntField(type.getCIntegerField("_endoff"), 0);
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51 try {
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52 scloffField = new CIntField(type.getCIntegerField("_scloff"), 0);
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53 } catch (Exception e) {
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54 }
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55 monoffField = new CIntField(type.getCIntegerField("_monoff"), 0);
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56 stkoffField = new CIntField(type.getCIntegerField("_stkoff"), 0);
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57 locoffField = new CIntField(type.getCIntegerField("_locoff"), 0);
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58 depthField = new CIntField(type.getCIntegerField("_depth"), 0);
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59 callerField = type.getAddressField("_caller");
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60 }
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61
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62 private static AddressField mapField;
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63 private static AddressField methodField;
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64 private static CIntField bciField;
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65 private static CIntField spField;
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66 private static CIntField endoffField;
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67 private static CIntField scloffField;
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68 private static CIntField monoffField;
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69 private static CIntField stkoffField;
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70 private static CIntField locoffField;
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71 private static CIntField depthField;
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72 private static AddressField callerField;
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73
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74 public static JVMState create(Address addr) {
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75 if (addr == null) return null;
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76 return new JVMState(addr);
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77 }
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78
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79 public JVMState(Address addr) {
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80 super(addr);
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81 }
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82
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83 public ciMethod method() {
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84 return (ciMethod) ciObjectFactory.get(methodField.getValue(getAddress()));
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85 }
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86
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87 public int bci() {
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88 return (int)bciField.getValue(getAddress());
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89 }
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90
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91 public JVMState caller() {
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92 return create(callerField.getValue(getAddress()));
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93 }
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94
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95 public void dumpSpec(PrintStream out) {
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96 ciMethod m = method();
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97 if (m != null) {
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98 Method meth = m.method();
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99 out.print(" " + meth.getMethodHolder().getName().asString().replace('/', '.') + "::" +
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100 meth.getName().asString() + " @ bci:" + bci());
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101 } else {
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102 out.print(" runtime stub");
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103 }
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104 if (caller() != null) caller().dumpSpec(out);
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105 }
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106 }
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