| /* |
| * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| package sun.jvm.hotspot.runtime.linux_ia64; |
| |
| import java.io.*; |
| import java.util.*; |
| import sun.jvm.hotspot.debugger.*; |
| import sun.jvm.hotspot.debugger.ia64.*; |
| import sun.jvm.hotspot.runtime.*; |
| import sun.jvm.hotspot.runtime.ia64.*; |
| import sun.jvm.hotspot.types.*; |
| import sun.jvm.hotspot.utilities.*; |
| |
| public class LinuxIA64JavaThreadPDAccess implements JavaThreadPDAccess { |
| // private static AddressField lastJavaPCField; |
| // private static AddressField lastJavaFPField; |
| private static AddressField lastJavaIFrameField; |
| private static AddressField osThreadField; |
| |
| // Field from OSThread |
| private static CIntegerField osThreadPThreadIDField; |
| |
| // This is currently unneeded but is being kept in case we change |
| // the currentFrameGuess algorithm |
| private static final long GUESS_SCAN_RANGE = 128 * 1024; |
| |
| static { |
| VM.registerVMInitializedObserver(new Observer() { |
| public void update(Observable o, Object data) { |
| initialize(VM.getVM().getTypeDataBase()); |
| } |
| }); |
| } |
| |
| private static synchronized void initialize(TypeDataBase db) { |
| Type type = db.lookupType("JavaThread"); |
| |
| lastJavaIFrameField = type.getAddressField("_last_Java_iframe"); |
| osThreadField = type.getAddressField("_osthread"); |
| |
| type = db.lookupType("OSThread"); |
| osThreadPThreadIDField = type.getCIntegerField("_pthread_id"); |
| } |
| |
| public Address getLastJavaIFrame(Address addr) { |
| return lastJavaIFrameField.getValue(addr); |
| } |
| |
| |
| public Address getBaseOfStackPointer(Address addr) { |
| return null; |
| } |
| |
| public Address getLastJavaFP(Address addr) { |
| return null; // Not in 1.4.1 |
| } |
| |
| public Address getLastJavaPC(Address addr) { |
| return null; // Not in 1.4.1 |
| } |
| |
| public boolean isInterpretedFrame() { |
| |
| // In 1.4.1 there are only interpreted frames |
| // and there is no pc |
| return true; |
| } |
| |
| public Frame getLastFramePD(JavaThread thread, Address addr) { |
| // The thread is the JavaThread that contains "this" |
| // so we don't need any new accessor at the JavaThread level |
| Address iframe = getLastJavaIFrame(addr); |
| Address pc = thread.getLastJavaPC(); |
| if (iframe == null) { |
| return null; // no information |
| } |
| return new IA64Frame(thread.getLastJavaSP(), iframe, pc); |
| } |
| |
| public RegisterMap newRegisterMap(JavaThread thread, boolean updateMap) { |
| return new IA64RegisterMap(thread, updateMap); |
| } |
| |
| public Frame getCurrentFrameGuess(JavaThread thread, Address addr) { |
| return getLastFramePD(thread, addr); |
| } |
| |
| public void printThreadIDOn(Address addr, PrintStream tty) { |
| tty.print(getThreadProxy(addr)); |
| } |
| |
| public void printInfoOn(Address threadAddr, PrintStream tty) { |
| tty.print("Thread id: "); |
| printThreadIDOn(threadAddr, tty); |
| tty.println("\nLastJavaIFrame: " + getLastJavaIFrame(threadAddr)); |
| } |
| |
| public Address getLastSP(Address addr) { |
| ThreadProxy t = getThreadProxy(addr); |
| IA64ThreadContext context = (IA64ThreadContext) t.getContext(); |
| return context.getRegisterAsAddress(IA64ThreadContext.SP); |
| } |
| |
| public ThreadProxy getThreadProxy(Address addr) { |
| // Addr is the address of the JavaThread. |
| // Fetch the OSThread (for now and for simplicity, not making a |
| // separate "OSThread" class in this package) |
| Address osThreadAddr = osThreadField.getValue(addr); |
| // Get the address of the _pthread_id from the OSThread |
| Address pthreadIdAddr = osThreadAddr.addOffsetTo(osThreadPThreadIDField.getOffset()); |
| |
| JVMDebugger debugger = VM.getVM().getDebugger(); |
| return debugger.getThreadForIdentifierAddress(pthreadIdAddr); |
| } |
| } |