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comparison agent/src/share/classes/sun/jvm/hotspot/debugger/linux/amd64/LinuxAMD64CFrame.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2003 Sun Microsystems, Inc. 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.debugger.linux.amd64;
26
27 import sun.jvm.hotspot.debugger.*;
28 import sun.jvm.hotspot.debugger.linux.*;
29 import sun.jvm.hotspot.debugger.cdbg.*;
30 import sun.jvm.hotspot.debugger.cdbg.basic.*;
31
32 final public class LinuxAMD64CFrame extends BasicCFrame {
33 public LinuxAMD64CFrame(LinuxDebugger dbg, Address rbp, Address rip) {
34 super(dbg.getCDebugger());
35 this.rbp = rbp;
36 this.rip = rip;
37 this.dbg = dbg;
38 }
39
40 // override base class impl to avoid ELF parsing
41 public ClosestSymbol closestSymbolToPC() {
42 // try native lookup in debugger.
43 return dbg.lookup(dbg.getAddressValue(pc()));
44 }
45
46 public Address pc() {
47 return rip;
48 }
49
50 public Address localVariableBase() {
51 return rbp;
52 }
53
54 public CFrame sender() {
55 if (rbp == null) {
56 return null;
57 }
58
59 Address nextRBP = rbp.getAddressAt( 0 * ADDRESS_SIZE);
60 if (nextRBP == null) {
61 return null;
62 }
63 Address nextPC = rbp.getAddressAt( 1 * ADDRESS_SIZE);
64 if (nextPC == null) {
65 return null;
66 }
67 return new LinuxAMD64CFrame(dbg, nextRBP, nextPC);
68 }
69
70 // package/class internals only
71 private static final int ADDRESS_SIZE = 8;
72 private Address rip;
73 private Address rbp;
74 private LinuxDebugger dbg;
75 }