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comparison agent/src/share/classes/sun/jvm/hotspot/debugger/cdbg/basic/amd64/AMD64CFrame.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.cdbg.basic.amd64;
26
27 import sun.jvm.hotspot.debugger.*;
28 import sun.jvm.hotspot.debugger.cdbg.*;
29 import sun.jvm.hotspot.debugger.cdbg.basic.*;
30
31 /** Basic AMD64 frame functionality providing sender() functionality. */
32
33 public class AMD64CFrame extends BasicCFrame {
34 private Address rbp;
35 private Address pc;
36
37 private static final int ADDRESS_SIZE = 8;
38
39 /** Constructor for topmost frame */
40 public AMD64CFrame(CDebugger dbg, Address rbp, Address pc) {
41 super(dbg);
42 this.rbp = rbp;
43 this.pc = pc;
44 }
45
46 public CFrame sender() {
47 if (rbp == null) {
48 return null;
49 }
50
51 Address nextRBP = rbp.getAddressAt( 0 * ADDRESS_SIZE);
52 if (nextRBP == null) {
53 return null;
54 }
55 Address nextPC = rbp.getAddressAt( 1 * ADDRESS_SIZE);
56 if (nextPC == null) {
57 return null;
58 }
59 return new AMD64CFrame(dbg(), nextRBP, nextPC);
60 }
61
62 public Address pc() {
63 return pc;
64 }
65
66 public Address localVariableBase() {
67 return rbp;
68 }
69 }