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Java example source code file (WindowsAMD64CFrame.java)

This example Java source code file (WindowsAMD64CFrame.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

address, address_size, amd64threadcontext, basiccframe, windbgdebugger, windowsamd64cframe

The WindowsAMD64CFrame.java Java example source code

/*
 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

package sun.jvm.hotspot.debugger.windows.amd64;

import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.debugger.amd64.*;
import sun.jvm.hotspot.debugger.cdbg.*;
import sun.jvm.hotspot.debugger.cdbg.basic.*;
import sun.jvm.hotspot.debugger.windbg.*;

public class WindowsAMD64CFrame extends BasicCFrame {
  private Address rbp;
  private Address pc;

  private static final int ADDRESS_SIZE = 8;

  /** Constructor for topmost frame */
  public WindowsAMD64CFrame(WindbgDebugger dbg, Address rbp, Address pc) {
    super(dbg.getCDebugger());
    this.rbp = rbp;
    this.pc  = pc;
    this.dbg = dbg;
  }

  public CFrame sender(ThreadProxy thread) {
    AMD64ThreadContext context = (AMD64ThreadContext) thread.getContext();
    Address rsp = context.getRegisterAsAddress(AMD64ThreadContext.RSP);

    if ( (rbp == null) || rbp.lessThan(rsp) ) {
      return null;
    }

    // Check alignment of rbp
    if ( dbg.getAddressValue(rbp) % ADDRESS_SIZE != 0) {
        return null;
    }

    Address nextRBP = rbp.getAddressAt( 0 * ADDRESS_SIZE);
    if (nextRBP == null || nextRBP.lessThanOrEqual(rbp)) {
      return null;
    }
    Address nextPC  = rbp.getAddressAt( 1 * ADDRESS_SIZE);
    if (nextPC == null) {
      return null;
    }
    return new WindowsAMD64CFrame(dbg, nextRBP, nextPC);
  }

  public Address pc() {
    return pc;
  }

  public Address localVariableBase() {
    return rbp;
  }

  private WindbgDebugger dbg;
}

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