/*
 * Copyright (c) 2011, 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.runtime.sparc;

import java.util.*;
import sun.jvm.hotspot.asm.sparc.SPARCRegister;
import sun.jvm.hotspot.asm.sparc.SPARCRegisters;
import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.runtime.*;
import sun.jvm.hotspot.types.*;

public class SPARCRicochetFrame {
  static {
    VM.registerVMInitializedObserver(new Observer() {
        public void update(Observable o, Object data) {
          initialize(VM.getVM().getTypeDataBase());
        }
      });
  }

  private SPARCFrame frame;

  private static void initialize(TypeDataBase db) {
    // Type type = db.lookupType("MethodHandles::RicochetFrame");

  }

  static SPARCRicochetFrame fromFrame(SPARCFrame f) {
    return new SPARCRicochetFrame(f);
  }

  private SPARCRicochetFrame(SPARCFrame f) {
    frame = f;
  }

  private Address registerValue(SPARCRegister reg) {
    return frame.getSP().addOffsetTo(reg.spOffsetInSavedWindow()).getAddressAt(0);
  }

  public Address savedArgsBase() {
    return registerValue(SPARCRegisters.L4);
  }
  public Address exactSenderSP() {
    return registerValue(SPARCRegisters.I5);
  }
  public Address senderLink() {
    return frame.getSenderSP();
  }
  public Address senderPC() {
    return frame.getSenderPC();
  }
  public Address extendedSenderSP() {
    return savedArgsBase();
  }
}