Mercurial > hg > truffle
comparison agent/src/share/classes/sun/jvm/hotspot/runtime/bsd_x86/BsdX86JavaThreadPDAccess.java @ 3960:f08d439fab8c
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 |
parents | |
children |
comparison
equal
deleted
inserted
replaced
3959:eda6988c0d81 | 3960:f08d439fab8c |
---|---|
1 /* | |
2 * Copyright (c) 2002, 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_x86; | |
26 | |
27 import java.io.*; | |
28 import java.util.*; | |
29 import sun.jvm.hotspot.debugger.*; | |
30 import sun.jvm.hotspot.debugger.x86.*; | |
31 import sun.jvm.hotspot.runtime.*; | |
32 import sun.jvm.hotspot.runtime.x86.*; | |
33 import sun.jvm.hotspot.types.*; | |
34 import sun.jvm.hotspot.utilities.*; | |
35 | |
36 public class BsdX86JavaThreadPDAccess implements JavaThreadPDAccess { | |
37 private static AddressField lastJavaFPField; | |
38 private static AddressField osThreadField; | |
39 | |
40 // Field from OSThread | |
41 private static CIntegerField osThreadThreadIDField; | |
42 | |
43 // This is currently unneeded but is being kept in case we change | |
44 // the currentFrameGuess algorithm | |
45 private static final long GUESS_SCAN_RANGE = 128 * 1024; | |
46 | |
47 static { | |
48 VM.registerVMInitializedObserver(new Observer() { | |
49 public void update(Observable o, Object data) { | |
50 initialize(VM.getVM().getTypeDataBase()); | |
51 } | |
52 }); | |
53 } | |
54 | |
55 private static synchronized void initialize(TypeDataBase db) { | |
56 Type type = db.lookupType("JavaThread"); | |
57 osThreadField = type.getAddressField("_osthread"); | |
58 | |
59 Type anchorType = db.lookupType("JavaFrameAnchor"); | |
60 lastJavaFPField = anchorType.getAddressField("_last_Java_fp"); | |
61 | |
62 Type osThreadType = db.lookupType("OSThread"); | |
63 osThreadThreadIDField = osThreadType.getCIntegerField("_thread_id"); | |
64 } | |
65 | |
66 public Address getLastJavaFP(Address addr) { | |
67 return lastJavaFPField.getValue(addr.addOffsetTo(sun.jvm.hotspot.runtime.JavaThread.getAnchorField().getOffset())); | |
68 } | |
69 | |
70 public Address getLastJavaPC(Address addr) { | |
71 return null; | |
72 } | |
73 | |
74 public Address getBaseOfStackPointer(Address addr) { | |
75 return null; | |
76 } | |
77 | |
78 public Frame getLastFramePD(JavaThread thread, Address addr) { | |
79 Address fp = thread.getLastJavaFP(); | |
80 if (fp == null) { | |
81 return null; // no information | |
82 } | |
83 return new X86Frame(thread.getLastJavaSP(), fp); | |
84 } | |
85 | |
86 public RegisterMap newRegisterMap(JavaThread thread, boolean updateMap) { | |
87 return new X86RegisterMap(thread, updateMap); | |
88 } | |
89 | |
90 public Frame getCurrentFrameGuess(JavaThread thread, Address addr) { | |
91 ThreadProxy t = getThreadProxy(addr); | |
92 X86ThreadContext context = (X86ThreadContext) t.getContext(); | |
93 X86CurrentFrameGuess guesser = new X86CurrentFrameGuess(context, thread); | |
94 if (!guesser.run(GUESS_SCAN_RANGE)) { | |
95 return null; | |
96 } | |
97 if (guesser.getPC() == null) { | |
98 return new X86Frame(guesser.getSP(), guesser.getFP()); | |
99 } else { | |
100 return new X86Frame(guesser.getSP(), guesser.getFP(), guesser.getPC()); | |
101 } | |
102 } | |
103 | |
104 public void printThreadIDOn(Address addr, PrintStream tty) { | |
105 tty.print(getThreadProxy(addr)); | |
106 } | |
107 | |
108 public void printInfoOn(Address threadAddr, PrintStream tty) { | |
109 tty.print("Thread id: "); | |
110 printThreadIDOn(threadAddr, tty); | |
111 // tty.println("\nPostJavaState: " + getPostJavaState(threadAddr)); | |
112 } | |
113 | |
114 public Address getLastSP(Address addr) { | |
115 ThreadProxy t = getThreadProxy(addr); | |
116 X86ThreadContext context = (X86ThreadContext) t.getContext(); | |
117 return context.getRegisterAsAddress(X86ThreadContext.ESP); | |
118 } | |
119 | |
120 public ThreadProxy getThreadProxy(Address addr) { | |
121 // Addr is the address of the JavaThread. | |
122 // Fetch the OSThread (for now and for simplicity, not making a | |
123 // separate "OSThread" class in this package) | |
124 Address osThreadAddr = osThreadField.getValue(addr); | |
125 // Get the address of the _thread_id from the OSThread | |
126 Address threadIdAddr = osThreadAddr.addOffsetTo(osThreadThreadIDField.getOffset()); | |
127 | |
128 JVMDebugger debugger = VM.getVM().getDebugger(); | |
129 return debugger.getThreadForIdentifierAddress(threadIdAddr); | |
130 } | |
131 } |