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comparison agent/src/share/classes/sun/jvm/hotspot/runtime/bsd_amd64/BsdAMD64JavaThreadPDAccess.java @ 3960:f08d439fab8c

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7089790: integrate bsd-port changes Reviewed-by: kvn, twisti, jrose Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>
author never
date Sun, 25 Sep 2011 16:03:29 -0700
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children 758935f7c23f
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3959:eda6988c0d81 3960:f08d439fab8c
1 /*
2 * Copyright (c) 2003, 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
21 * questions.
22 *
23 */
24
25 package sun.jvm.hotspot.runtime.bsd_amd64;
26
27 import java.io.*;
28 import java.util.*;
29 import sun.jvm.hotspot.debugger.*;
30 import sun.jvm.hotspot.debugger.amd64.*;
31 import sun.jvm.hotspot.runtime.*;
32 import sun.jvm.hotspot.runtime.amd64.*;
33 import sun.jvm.hotspot.runtime.x86.*;
34 import sun.jvm.hotspot.types.*;
35 import sun.jvm.hotspot.utilities.*;
36
37 public class BsdAMD64JavaThreadPDAccess implements JavaThreadPDAccess {
38 private static AddressField lastJavaFPField;
39 private static AddressField osThreadField;
40
41 // Field from OSThread
42 private static CIntegerField osThreadThreadIDField;
43
44 // This is currently unneeded but is being kept in case we change
45 // the currentFrameGuess algorithm
46 private static final long GUESS_SCAN_RANGE = 128 * 1024;
47
48 static {
49 VM.registerVMInitializedObserver(new Observer() {
50 public void update(Observable o, Object data) {
51 initialize(VM.getVM().getTypeDataBase());
52 }
53 });
54 }
55
56 private static synchronized void initialize(TypeDataBase db) {
57 Type type = db.lookupType("JavaThread");
58 osThreadField = type.getAddressField("_osthread");
59
60 Type anchorType = db.lookupType("JavaFrameAnchor");
61 lastJavaFPField = anchorType.getAddressField("_last_Java_fp");
62
63 Type osThreadType = db.lookupType("OSThread");
64 osThreadThreadIDField = osThreadType.getCIntegerField("_thread_id");
65 }
66
67 public Address getLastJavaFP(Address addr) {
68 return lastJavaFPField.getValue(addr.addOffsetTo(sun.jvm.hotspot.runtime.JavaThread.getAnchorField().getOffset()));
69 }
70
71 public Address getLastJavaPC(Address addr) {
72 return null;
73 }
74
75 public Address getBaseOfStackPointer(Address addr) {
76 return null;
77 }
78
79 public Frame getLastFramePD(JavaThread thread, Address addr) {
80 Address fp = thread.getLastJavaFP();
81 if (fp == null) {
82 return null; // no information
83 }
84 return new X86Frame(thread.getLastJavaSP(), fp);
85 }
86
87 public RegisterMap newRegisterMap(JavaThread thread, boolean updateMap) {
88 return new X86RegisterMap(thread, updateMap);
89 }
90
91 public Frame getCurrentFrameGuess(JavaThread thread, Address addr) {
92 ThreadProxy t = getThreadProxy(addr);
93 AMD64ThreadContext context = (AMD64ThreadContext) t.getContext();
94 AMD64CurrentFrameGuess guesser = new AMD64CurrentFrameGuess(context, thread);
95 if (!guesser.run(GUESS_SCAN_RANGE)) {
96 return null;
97 }
98 if (guesser.getPC() == null) {
99 return new X86Frame(guesser.getSP(), guesser.getFP());
100 } else {
101 return new X86Frame(guesser.getSP(), guesser.getFP(), guesser.getPC());
102 }
103 }
104
105 public void printThreadIDOn(Address addr, PrintStream tty) {
106 tty.print(getThreadProxy(addr));
107 }
108
109 public void printInfoOn(Address threadAddr, PrintStream tty) {
110 tty.print("Thread id: ");
111 printThreadIDOn(threadAddr, tty);
112 // tty.println("\nPostJavaState: " + getPostJavaState(threadAddr));
113 }
114
115 public Address getLastSP(Address addr) {
116 ThreadProxy t = getThreadProxy(addr);
117 AMD64ThreadContext context = (AMD64ThreadContext) t.getContext();
118 return context.getRegisterAsAddress(AMD64ThreadContext.RSP);
119 }
120
121 public ThreadProxy getThreadProxy(Address addr) {
122 // Addr is the address of the JavaThread.
123 // Fetch the OSThread (for now and for simplicity, not making a
124 // separate "OSThread" class in this package)
125 Address osThreadAddr = osThreadField.getValue(addr);
126 // Get the address of the _thread_id from the OSThread
127 Address threadIdAddr = osThreadAddr.addOffsetTo(osThreadThreadIDField.getOffset());
128
129 JVMDebugger debugger = VM.getVM().getDebugger();
130 return debugger.getThreadForIdentifierAddress(threadIdAddr);
131 }
132 }