/*

 * Copyright 1997-2008 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.

 *

 */

// This file holds the platform specific parts of the StubRoutines

// definition. See stubRoutines.hpp for a description on how to

// extend it.

enum platform_dependent_constants {

  code_size1 =  9000,           // simply increase if too small (assembler will crash if too small)

  code_size2 = 22000            // simply increase if too small (assembler will crash if too small)

};

class x86 {

 friend class StubGenerator;

 friend class VMStructs;

 private:

  // If we call compiled code directly from the call stub we will

  // need to adjust the return back to the call stub to a specialized

  // piece of code that can handle compiled results and cleaning the fpu

  // stack. The variable holds that location.

  static address _call_stub_compiled_return;

  static address _verify_mxcsr_entry;

  static address _verify_fpu_cntrl_wrd_entry;

  static jint    _mxcsr_std;

 public:

  static address verify_mxcsr_entry()                        { return _verify_mxcsr_entry; }

  static address verify_fpu_cntrl_wrd_entry()                { return _verify_fpu_cntrl_wrd_entry; }

  static address get_call_stub_compiled_return()             { return _call_stub_compiled_return; }

  static void set_call_stub_compiled_return(address ret)     { _call_stub_compiled_return = ret; }

};

  static bool    returns_to_call_stub(address return_pc)     { return (return_pc == _call_stub_return_address) ||

                                                                       return_pc == x86::get_call_stub_compiled_return(); }