1 /*
2  * Copyright (c) 2002, 2013, 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
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22  *
23  */
24 
25 package sun.jvm.hotspot;
26 
27 import sun.jvm.hotspot.debugger.*;
28 import sun.jvm.hotspot.types.*;
29 import sun.jvm.hotspot.types.basic.*;
30 
31 public class BsdVtblAccess extends BasicVtblAccess {
32   private String vt;
33 
BsdVtblAccess(SymbolLookup symbolLookup, String[] dllNames)34   public BsdVtblAccess(SymbolLookup symbolLookup,
35                          String[] dllNames) {
36     super(symbolLookup, dllNames);
37     boolean oldVT = false;
38     boolean isDarwin = dllNames[0].lastIndexOf(".dylib") != -1;
39     String vtJavaThread = isDarwin ? "_vt_10JavaThread" : "__vt_10JavaThread";
40     for (String dllName : dllNames) {
41        if (symbolLookup.lookup(dllName, vtJavaThread) != null) {
42          oldVT = true;
43          break;
44        }
45     }
46     if (oldVT) {
47        // old C++ ABI
48        vt = isDarwin ? "_vt_" :  "__vt_";
49     } else {
50        // new C++ ABI
51        vt = "_ZTV";
52     }
53   }
54 
vtblSymbolForType(Type type)55   protected String vtblSymbolForType(Type type) {
56     return vt + type.getName().length() + type;
57   }
58 }
59