1 /*

     2  * Copyright (c) 2016, 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.code;

    26 

    27 import java.util.*;

    28 

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

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

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

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

    33 import sun.jvm.hotspot.utilities.*;

    34 

    35 public class RuntimeBlob extends CodeBlob {

    36 

    37   // Only used by server compiler on x86; computed over in SA rather

    38   // than relying on computation in target VM

    39   private static final int     NOT_YET_COMPUTED = -2;

    40   private static final int     UNDEFINED        = -1;

    41   private              int     linkOffset       = NOT_YET_COMPUTED;

    42 

    43   static {

    44     VM.registerVMInitializedObserver(new Observer() {

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

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

    47         }

    48       });

    49   }

    50 

    51   private static void initialize(TypeDataBase db) {

    52     Type type = db.lookupType("RuntimeBlob");

    53   }

    54 

    55   public RuntimeBlob(Address addr) {

    56     super(addr);

    57   }

    58 }