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comparison agent/src/share/classes/sun/jvm/hotspot/opto/MachSafePointNode.java @ 3939:f6f3bb0ee072

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7088955: add C2 IR support to the SA Reviewed-by: kvn
author never
date Sun, 11 Sep 2011 14:48:24 -0700
parents
children 79f492f184d0
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3938:e6b1331a51d2 3939:f6f3bb0ee072
1 /*
2 * Copyright (c) 2011, 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 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.opto;
26
27 import java.util.*;
28 import java.io.PrintStream;
29 import sun.jvm.hotspot.debugger.*;
30 import sun.jvm.hotspot.runtime.*;
31 import sun.jvm.hotspot.oops.*;
32 import sun.jvm.hotspot.types.*;
33
34 public class MachSafePointNode extends MachReturnNode {
35 static {
36 VM.registerVMInitializedObserver(new Observer() {
37 public void update(Observable o, Object data) {
38 initialize(VM.getVM().getTypeDataBase());
39 }
40 });
41 }
42
43 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
44 Type type = db.lookupType("MachSafePointNode");
45 jvmsField = type.getAddressField("_jvms");
46 jvmadjField = new CIntField(type.getCIntegerField("_jvmadj"), 0);
47 }
48
49 private static AddressField jvmsField;
50 private static CIntField jvmadjField;
51
52 public MachSafePointNode(Address addr) {
53 super(addr);
54 }
55
56 public JVMState jvms() {
57 return JVMState.create(jvmsField.getValue(getAddress()));
58 }
59
60 public void dumpSpec(PrintStream out) {
61 try {
62 JVMState jvms = jvms();
63 if (jvms != null) out.print(" !");
64 if (jvms == null) out.print("empty jvms");
65 while (jvms != null) {
66 Method m = jvms.method().method();
67 int bci = jvms.bci();
68 out.print(" " + m.getMethodHolder().getName().asString().replace('/', '.') + "::" + m.getName().asString() + " @ bci:" + bci);
69 jvms = jvms.caller();
70 }
71 } catch (Exception e) {
72 out.print(e);
73 }
74 }
75 }