1 /*
   2  * Copyright (c) 2020, Microsoft Corporation. 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.debugger.windbg.aarch64;
  26 
  27 import sun.jvm.hotspot.debugger.*;
  28 import sun.jvm.hotspot.debugger.aarch64.*;
  29 import sun.jvm.hotspot.debugger.windbg.*;
  30 
  31 class WindbgAARCH64Thread implements ThreadProxy {
  32   private WindbgDebugger debugger;
  33   private long           sysId;
  34   private boolean        gotID;
  35   private long           id;
  36 
  37   // The address argument must be the address of the OSThread::_thread_id
  38   WindbgAARCH64Thread(WindbgDebugger debugger, Address addr) {
  39     this.debugger = debugger;
  40     this.sysId    = (long)addr.getCIntegerAt(0, 4, true);
  41     gotID         = false;
  42   }
  43 
  44   WindbgAARCH64Thread(WindbgDebugger debugger, long sysId) {
  45     this.debugger = debugger;
  46     this.sysId    = sysId;
  47     gotID         = false;
  48   }
  49 
  50   public ThreadContext getContext() throws IllegalThreadStateException {
  51     long[] data = debugger.getThreadIntegerRegisterSet(getThreadID());
  52     WindbgAARCH64ThreadContext context = new WindbgAARCH64ThreadContext(debugger);
  53     for (int i = 0; i < data.length; i++) {
  54       context.setRegister(i, data[i]);
  55     }
  56     return context;
  57   }
  58 
  59   public boolean canSetContext() throws DebuggerException {
  60     return false;
  61   }
  62 
  63   public void setContext(ThreadContext thrCtx)
  64     throws IllegalThreadStateException, DebuggerException {
  65     throw new DebuggerException("Unimplemented");
  66   }
  67 
  68   public boolean equals(Object obj) {
  69     if ((obj == null) || !(obj instanceof WindbgAARCH64Thread)) {
  70       return false;
  71     }
  72 
  73     return (((WindbgAARCH64Thread) obj).getThreadID() == getThreadID());
  74   }
  75 
  76   public int hashCode() {
  77     return (int) getThreadID();
  78   }
  79 
  80   public String toString() {
  81     return Long.toString(getThreadID());
  82   }
  83 
  84   /** Retrieves the thread ID of this thread by examining the Thread
  85       Information Block. */
  86   private long getThreadID() {
  87     if (!gotID) {
  88        id = debugger.getThreadIdFromSysId(sysId);
  89     }
  90 
  91     return id;
  92   }
  93 }