Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/win32_x86/Win32X86JavaThreadPDAccess.java @ 3939:f6f3bb0ee072
7088955: add C2 IR support to the SA
Reviewed-by: kvn
| author | never |
|---|---|
| date | Sun, 11 Sep 2011 14:48:24 -0700 |
| parents | c18cbe5936b8 |
| children | 43badbe2717a |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 3939 | 2 * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 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 osThreadThreadHandleField; | |
| 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 osThreadThreadHandleField = type.getField("_thread_handle"); | |
| 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(); | |
| 87 if ( pc != null ) { | |
| 88 return new X86Frame(thread.getLastJavaSP(), fp, pc); | |
| 89 } else { | |
| 90 return new X86Frame(thread.getLastJavaSP(), fp); | |
| 91 } | |
| 92 } | |
| 93 | |
| 94 public RegisterMap newRegisterMap(JavaThread thread, boolean updateMap) { | |
| 95 return new X86RegisterMap(thread, updateMap); | |
| 96 } | |
| 97 | |
| 98 public Frame getCurrentFrameGuess(JavaThread thread, Address addr) { | |
| 99 ThreadProxy t = getThreadProxy(addr); | |
| 100 X86ThreadContext context = (X86ThreadContext) t.getContext(); | |
| 101 X86CurrentFrameGuess guesser = new X86CurrentFrameGuess(context, thread); | |
| 102 if (!guesser.run(GUESS_SCAN_RANGE)) { | |
| 103 return null; | |
| 104 } | |
| 105 if (guesser.getPC() == null) { | |
| 106 return new X86Frame(guesser.getSP(), guesser.getFP()); | |
| 107 } else { | |
| 108 return new X86Frame(guesser.getSP(), guesser.getFP(), guesser.getPC()); | |
| 109 } | |
| 110 } | |
| 111 | |
| 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 HANDLE within the OSThread | |
| 131 Address threadHandleAddr = | |
| 132 osThreadAddr.addOffsetTo(osThreadThreadHandleField.getOffset()); | |
| 133 JVMDebugger debugger = VM.getVM().getDebugger(); | |
| 134 return debugger.getThreadForIdentifierAddress(threadHandleAddr); | |
| 135 } | |
| 136 } |