| /* |
| * Copyright 1997-2007 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. |
| * |
| */ |
| |
| // 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 i486 { |
| 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 == i486::get_call_stub_compiled_return(); } |