1 /*

     2  * Copyright (c) 2003, 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.runtime.ia64;

    26 

    27 import java.util.*;

    28 import sun.jvm.hotspot.debugger.*;

    29 import sun.jvm.hotspot.types.*;

    30 import sun.jvm.hotspot.runtime.*;

    31 

    32 public class IA64JavaCallWrapper extends JavaCallWrapper {

    33   private static AddressField lastJavaIFrameField;

    34 

    35   static {

    36     VM.registerVMInitializedObserver(new Observer() {

    37         public void update(Observable o, Object data) {

    38           initialize(VM.getVM().getTypeDataBase());

    39         }

    40       });

    41   }

    42 

    43   private static synchronized void initialize(TypeDataBase db) {

    44     Type type = db.lookupType("JavaCallWrapper");

    45 

    46     lastJavaIFrameField  = type.getAddressField("_last_Java_iframe");

    47   }

    48 

    49   public IA64JavaCallWrapper(Address addr) {

    50     super(addr);

    51   }

    52 

    53   public Address getPrevIFrame() {

    54     return lastJavaIFrameField.getValue(addr);

    55   }

    56 }