1 /*
   2  * Copyright (c) 2011, 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  *
  23  */
  24 
  25 package sun.jvm.hotspot.opto;
  26 
  27 import java.util.*;
  28 import java.io.PrintStream;
  29 import sun.jvm.hotspot.ci.ciMethod;
  30 import sun.jvm.hotspot.ci.ciObjectFactory;
  31 import sun.jvm.hotspot.debugger.*;
  32 import sun.jvm.hotspot.runtime.*;
  33 import sun.jvm.hotspot.oops.*;
  34 import sun.jvm.hotspot.types.*;
  35 
  36 public class MachCallJavaNode extends MachCallNode {
  37   static {
  38     VM.registerVMInitializedObserver(new Observer() {
  39         public void update(Observable o, Object data) {
  40           initialize(VM.getVM().getTypeDataBase());
  41         }
  42       });
  43   }
  44 
  45   private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
  46     Type type      = db.lookupType("MachCallJavaNode");
  47     methodField = type.getAddressField("_method");
  48     bciField = new CIntField(type.getCIntegerField("_bci"), 0);
  49   }
  50 
  51   private static AddressField methodField;
  52   private static CIntField bciField;
  53 
  54   public ciMethod method() {
  55     return (ciMethod) ciObjectFactory.get(methodField.getValue(getAddress()));
  56   }
  57 
  58   public MachCallJavaNode(Address addr) {
  59     super(addr);
  60   }
  61 
  62   public void dumpSpec(PrintStream st) {
  63     ciMethod m = method();
  64     if (m != null) {
  65       m.printShortName(st);
  66       st.print(" ");
  67     }
  68     super.dumpSpec(st);
  69   }
  70 }