|
0
|
1 /*
|
|
|
2 * Copyright 2000-2004 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.code;
|
|
|
26
|
|
|
27 import java.io.*;
|
|
|
28 import java.util.*;
|
|
|
29 import sun.jvm.hotspot.debugger.*;
|
|
|
30 import sun.jvm.hotspot.runtime.*;
|
|
|
31 import sun.jvm.hotspot.types.*;
|
|
|
32
|
|
|
33 /** PcDescs map a physical PC (given as offset from start of nmethod)
|
|
|
34 to the corresponding source scope and byte code index. */
|
|
|
35
|
|
|
36 public class PCDesc extends VMObject {
|
|
|
37 private static CIntegerField pcOffsetField;
|
|
|
38 private static CIntegerField scopeDecodeOffsetField;
|
|
|
39
|
|
|
40 static {
|
|
|
41 VM.registerVMInitializedObserver(new Observer() {
|
|
|
42 public void update(Observable o, Object data) {
|
|
|
43 initialize(VM.getVM().getTypeDataBase());
|
|
|
44 }
|
|
|
45 });
|
|
|
46 }
|
|
|
47
|
|
|
48 private static void initialize(TypeDataBase db) {
|
|
|
49 Type type = db.lookupType("PcDesc");
|
|
|
50
|
|
|
51 pcOffsetField = type.getCIntegerField("_pc_offset");
|
|
|
52 scopeDecodeOffsetField = type.getCIntegerField("_scope_decode_offset");
|
|
|
53 }
|
|
|
54
|
|
|
55 public PCDesc(Address addr) {
|
|
|
56 super(addr);
|
|
|
57 }
|
|
|
58
|
|
|
59 // FIXME: add additional constructor probably needed for ScopeDesc::sender()
|
|
|
60
|
|
|
61 public int getPCOffset() {
|
|
|
62 return (int) pcOffsetField.getValue(addr);
|
|
|
63 }
|
|
|
64
|
|
|
65 public int getScopeDecodeOffset() {
|
|
|
66 return ((int) scopeDecodeOffsetField.getValue(addr));
|
|
|
67 }
|
|
|
68
|
|
|
69 public Address getRealPC(NMethod code) {
|
|
|
70 return code.instructionsBegin().addOffsetTo(getPCOffset());
|
|
|
71 }
|
|
|
72
|
|
|
73 public void print(NMethod code) {
|
|
|
74 printOn(System.out, code);
|
|
|
75 }
|
|
|
76
|
|
|
77 public void printOn(PrintStream tty, NMethod code) {
|
|
|
78 tty.println("PCDesc(" + getRealPC(code) + "):");
|
|
|
79 for (ScopeDesc sd = code.getScopeDescAt(getRealPC(code));
|
|
|
80 sd != null;
|
|
|
81 sd = sd.sender()) {
|
|
|
82 tty.print(" ");
|
|
|
83 sd.getMethod().printValueOn(tty);
|
|
|
84 tty.print(" @" + sd.getBCI());
|
|
|
85 tty.println();
|
|
|
86 }
|
|
|
87 }
|
|
|
88 }
|
