1 /*
2 * Copyright (c) 2000, 2013, 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 *
25 package sun.jvm.hotspot.runtime.win32_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 /** This class is only public to allow using the VMObjectFactory to
37 instantiate these.
38 */
39
40 public class Win32X86JavaThreadPDAccess implements JavaThreadPDAccess {
41 private static AddressField lastJavaFPField;
42 private static AddressField osThreadField;
43
44 // Field from OSThread
45 private static Field osThreadThreadIdField;
46
47 // This is currently unneeded but is being kept in case we change
48 // the currentFrameGuess algorithm
49 private static final long GUESS_SCAN_RANGE = 128 * 1024;
50
51 static {
52 VM.registerVMInitializedObserver(new Observer() {
53 public void update(Observable o, Object data) {
54 initialize(VM.getVM().getTypeDataBase());
55 }
56 });
57 }
58
59 private static synchronized void initialize(TypeDataBase db) {
60 Type type = db.lookupType("JavaThread");
61 Type anchorType = db.lookupType("JavaFrameAnchor");
62 lastJavaFPField = anchorType.getAddressField("_last_Java_fp");
63 osThreadField = type.getAddressField("_osthread");
64
65 type = db.lookupType("OSThread");
66 osThreadThreadIdField = type.getField("_thread_id");
67 }
68
69 public Address getLastJavaFP(Address addr) {
70 return lastJavaFPField.getValue(addr.addOffsetTo(sun.jvm.hotspot.runtime.JavaThread.getAnchorField().getOffset()));
71 }
72
73 public Address getLastJavaPC(Address addr) {
74 return null;
75 }
76
77 public Address getBaseOfStackPointer(Address addr) {
78 return null;
79 }
80
81 public Frame getLastFramePD(JavaThread thread, Address addr) {
82 Address fp = thread.getLastJavaFP();
83 if (fp == null) {
84 return null; // no information
85 }
86 Address pc = thread.getLastJavaPC();
112 public void printThreadIDOn(Address addr, PrintStream tty) {
113 tty.print(getThreadProxy(addr));
114 }
115
116 public void printInfoOn(Address threadAddr, PrintStream tty) {
117 }
118
119 public Address getLastSP(Address addr) {
120 ThreadProxy t = getThreadProxy(addr);
121 X86ThreadContext context = (X86ThreadContext) t.getContext();
122 return context.getRegisterAsAddress(X86ThreadContext.ESP);
123 }
124
125 public ThreadProxy getThreadProxy(Address addr) {
126 // Addr is the address of the JavaThread.
127 // Fetch the OSThread (for now and for simplicity, not making a
128 // separate "OSThread" class in this package)
129 Address osThreadAddr = osThreadField.getValue(addr);
130 // Get the address of the thread_id within the OSThread
131 Address threadIdAddr =
132 osThreadAddr.addOffsetTo(osThreadThreadIdField.getOffset());
133 JVMDebugger debugger = VM.getVM().getDebugger();
134 return debugger.getThreadForIdentifierAddress(threadIdAddr);
135 }
136 }
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1 /*
2 * Copyright (c) 2000, 2017, 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 *
25 package sun.jvm.hotspot.runtime.win32_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 /** This class is only public to allow using the VMObjectFactory to
37 instantiate these.
38 */
39
40 public class Win32X86JavaThreadPDAccess implements JavaThreadPDAccess {
41 private static AddressField lastJavaFPField;
42 private static AddressField osThreadField;
43
44 // Field from OSThread
45 private static Field threadIdField;
46
47 // This is currently unneeded but is being kept in case we change
48 // the currentFrameGuess algorithm
49 private static final long GUESS_SCAN_RANGE = 128 * 1024;
50
51 static {
52 VM.registerVMInitializedObserver(new Observer() {
53 public void update(Observable o, Object data) {
54 initialize(VM.getVM().getTypeDataBase());
55 }
56 });
57 }
58
59 private static synchronized void initialize(TypeDataBase db) {
60 Type type = db.lookupType("JavaThread");
61 Type anchorType = db.lookupType("JavaFrameAnchor");
62 lastJavaFPField = anchorType.getAddressField("_last_Java_fp");
63 osThreadField = type.getAddressField("_osthread");
64
65 type = db.lookupType("OSThread");
66 threadIdField = type.getField("_thread_id");
67 }
68
69 public Address getLastJavaFP(Address addr) {
70 return lastJavaFPField.getValue(addr.addOffsetTo(sun.jvm.hotspot.runtime.JavaThread.getAnchorField().getOffset()));
71 }
72
73 public Address getLastJavaPC(Address addr) {
74 return null;
75 }
76
77 public Address getBaseOfStackPointer(Address addr) {
78 return null;
79 }
80
81 public Frame getLastFramePD(JavaThread thread, Address addr) {
82 Address fp = thread.getLastJavaFP();
83 if (fp == null) {
84 return null; // no information
85 }
86 Address pc = thread.getLastJavaPC();
112 public void printThreadIDOn(Address addr, PrintStream tty) {
113 tty.print(getThreadProxy(addr));
114 }
115
116 public void printInfoOn(Address threadAddr, PrintStream tty) {
117 }
118
119 public Address getLastSP(Address addr) {
120 ThreadProxy t = getThreadProxy(addr);
121 X86ThreadContext context = (X86ThreadContext) t.getContext();
122 return context.getRegisterAsAddress(X86ThreadContext.ESP);
123 }
124
125 public ThreadProxy getThreadProxy(Address addr) {
126 // Addr is the address of the JavaThread.
127 // Fetch the OSThread (for now and for simplicity, not making a
128 // separate "OSThread" class in this package)
129 Address osThreadAddr = osThreadField.getValue(addr);
130 // Get the address of the thread_id within the OSThread
131 Address threadIdAddr =
132 osThreadAddr.addOffsetTo(threadIdField.getOffset());
133 JVMDebugger debugger = VM.getVM().getDebugger();
134 return debugger.getThreadForIdentifierAddress(threadIdAddr);
135 }
136 }
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