duke@435: /*
xdono@772:  * Copyright 1997-2008 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: // This file holds the platform specific parts of the StubRoutines
duke@435: // definition. See stubRoutines.hpp for a description on how to
duke@435: // extend it.
duke@435: 
duke@435: enum platform_dependent_constants {
duke@435:   code_size1 =  9000,           // simply increase if too small (assembler will crash if too small)
duke@435:   code_size2 = 22000            // simply increase if too small (assembler will crash if too small)
duke@435: };
duke@435: 
never@739: class x86 {
duke@435:  friend class StubGenerator;
duke@435:  friend class VMStructs;
duke@435: 
duke@435:  private:
duke@435:   // If we call compiled code directly from the call stub we will
duke@435:   // need to adjust the return back to the call stub to a specialized
duke@435:   // piece of code that can handle compiled results and cleaning the fpu
duke@435:   // stack. The variable holds that location.
duke@435:   static address _call_stub_compiled_return;
duke@435:   static address _verify_mxcsr_entry;
duke@435:   static address _verify_fpu_cntrl_wrd_entry;
duke@435:   static jint    _mxcsr_std;
duke@435: 
duke@435:  public:
duke@435:   static address verify_mxcsr_entry()                        { return _verify_mxcsr_entry; }
duke@435:   static address verify_fpu_cntrl_wrd_entry()                { return _verify_fpu_cntrl_wrd_entry; }
duke@435: 
duke@435:   static address get_call_stub_compiled_return()             { return _call_stub_compiled_return; }
duke@435:   static void set_call_stub_compiled_return(address ret)     { _call_stub_compiled_return = ret; }
duke@435: };
duke@435: 
duke@435:   static bool    returns_to_call_stub(address return_pc)     { return (return_pc == _call_stub_return_address) ||
never@739:                                                                        return_pc == x86::get_call_stub_compiled_return(); }