/*
 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2014, Red Hat 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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#ifndef CPU_AARCH64_VM_STUBROUTINES_AARCH64_HPP
#define CPU_AARCH64_VM_STUBROUTINES_AARCH64_HPP

// This file holds the platform specific parts of the StubRoutines
// definition. See stubRoutines.hpp for a description on how to
// extend it.

// n.b. if we are notifying entry/exit to the simulator then the call
// stub does a notify at normal return placing
// call_stub_return_address one instruction beyond the notify. the
// latter address is sued by the stack unwind code when doign an
// exception return.
static bool    returns_to_call_stub(address return_pc)   {
  return return_pc == _call_stub_return_address + (NotifySimulator ? -4 : 0);
}

enum platform_dependent_constants {
  code_size1 = 19000,          // simply increase if too small (assembler will crash if too small)
  code_size2 = 23000           // simply increase if too small (assembler will crash if too small)
};

class aarch64 {
 friend class StubGenerator;

 private:
  static address _shenandoah_wb;

  static address _get_previous_fp_entry;
  static address _get_previous_sp_entry;

  static address _f2i_fixup;
  static address _f2l_fixup;
  static address _d2i_fixup;
  static address _d2l_fixup;

  static address _float_sign_mask;
  static address _float_sign_flip;
  static address _double_sign_mask;
  static address _double_sign_flip;

  static address _zero_longs;

 public:

  static address shenandoah_wb()
  {
    return _shenandoah_wb;
  }

  static address get_zero_longs()
  {
    return _zero_longs;
  }

 private:
  static juint    _crc_table[];

};

#endif // CPU_AARCH64_VM_STUBROUTINES_AARCH64_HPP