/*
 * Copyright 1999-2007 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.
 *
 */

 private:
  void pd_initialize()                           { _anchor.clear(); }

  frame pd_last_frame() {
    assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
    if (_anchor.last_Java_pc() != NULL) {
      return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp(), _anchor.last_Java_pc());
    } else {
      // This will pick up pc from sp
      return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp());
    }
  }

 public:
  // Mutators are highly dangerous....
  intptr_t* last_Java_fp()                       { return _anchor.last_Java_fp(); }
  void  set_last_Java_fp(intptr_t* fp)           { _anchor.set_last_Java_fp(fp);   }

  void set_base_of_stack_pointer(intptr_t* base_sp)  {}

  static ByteSize last_Java_fp_offset()          {
    return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_Java_fp_offset();
  }

  intptr_t* base_of_stack_pointer()                  { return NULL; }
  void record_base_of_stack_pointer()            {}

  bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext,
    bool isInJava);

  // These routines are only used on cpu architectures that
  // have separate register stacks (Itanium).
  static bool register_stack_overflow() { return false; }
  static void enable_register_stack_guard() {}
  static void disable_register_stack_guard() {}