| /* |
| * Copyright 2001-2004 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.debugger.win32; |
| |
| import sun.jvm.hotspot.debugger.*; |
| import sun.jvm.hotspot.debugger.x86.*; |
| |
| class Win32Thread implements ThreadProxy { |
| private Win32Debugger debugger; |
| private int handle; |
| private boolean mustDuplicate; |
| private boolean gotID; |
| private int id; |
| |
| /** The address argument must be the address of the HANDLE of the |
| desired thread in the target process. */ |
| Win32Thread(Win32Debugger debugger, Address addr) { |
| this.debugger = debugger; |
| // FIXME: size of data fetched here should be configurable. |
| // However, making it so would produce a dependency on the "types" |
| // package from the debugger package, which is not desired. |
| this.handle = (int) addr.getCIntegerAt(0, 4, true); |
| // Thread handles in the target process must be duplicated before |
| // fetching their contexts |
| mustDuplicate = true; |
| gotID = false; |
| } |
| |
| /** The integer argument must be the value of a HANDLE received from |
| the "threadlist" operation. */ |
| Win32Thread(Win32Debugger debugger, long handle) { |
| this.debugger = debugger; |
| this.handle = (int) handle; |
| mustDuplicate = false; |
| gotID = false; |
| } |
| |
| public ThreadContext getContext() throws IllegalThreadStateException { |
| if (!debugger.isSuspended()) { |
| throw new IllegalThreadStateException("Target process must be suspended"); |
| } |
| long[] data = debugger.getThreadIntegerRegisterSet(handle, mustDuplicate); |
| Win32ThreadContext context = new Win32ThreadContext(debugger); |
| for (int i = 0; i < data.length; i++) { |
| context.setRegister(i, data[i]); |
| } |
| return context; |
| } |
| |
| public boolean canSetContext() throws DebuggerException { |
| return true; |
| } |
| |
| public void setContext(ThreadContext thrCtx) |
| throws IllegalThreadStateException, DebuggerException { |
| if (!debugger.isSuspended()) { |
| throw new IllegalThreadStateException("Target process must be suspended"); |
| } |
| X86ThreadContext context = (X86ThreadContext) thrCtx; |
| long[] data = new long[X86ThreadContext.NPRGREG]; |
| for (int i = 0; i < data.length; i++) { |
| data[i] = context.getRegister(i); |
| } |
| debugger.setThreadIntegerRegisterSet(handle, mustDuplicate, data); |
| } |
| |
| public boolean equals(Object obj) { |
| if ((obj == null) || !(obj instanceof Win32Thread)) { |
| return false; |
| } |
| |
| return (((Win32Thread) obj).getThreadID() == getThreadID()); |
| } |
| |
| public int hashCode() { |
| return getThreadID(); |
| } |
| |
| public String toString() { |
| return Integer.toString(getThreadID()); |
| } |
| |
| /** Retrieves the thread ID of this thread by examining the Thread |
| Information Block. */ |
| private int getThreadID() { |
| if (!gotID) { |
| try { |
| // Get thread context |
| X86ThreadContext context = (X86ThreadContext) getContext(); |
| // Get LDT entry for FS register |
| Win32LDTEntry ldt = |
| debugger.getThreadSelectorEntry(handle, |
| mustDuplicate, |
| (int) context.getRegister(X86ThreadContext.FS)); |
| // Get base address of segment = Thread Environment Block (TEB) |
| Address teb = debugger.newAddress(ldt.getBase()); |
| // Thread ID is at offset 0x24 |
| id = (int) teb.getCIntegerAt(0x24, 4, true); |
| gotID = true; |
| } catch (AddressException e) { |
| throw new DebuggerException(e); |
| } |
| } |
| |
| return id; |
| } |
| } |