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comparison src/cpu/x86/vm/stubRoutines_x86_32.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children dc7f315e41f7
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 // This file holds the platform specific parts of the StubRoutines
26 // definition. See stubRoutines.hpp for a description on how to
27 // extend it.
28
29 enum platform_dependent_constants {
30 code_size1 = 9000, // simply increase if too small (assembler will crash if too small)
31 code_size2 = 22000 // simply increase if too small (assembler will crash if too small)
32 };
33
34 class i486 {
35 friend class StubGenerator;
36 friend class VMStructs;
37
38 private:
39 // If we call compiled code directly from the call stub we will
40 // need to adjust the return back to the call stub to a specialized
41 // piece of code that can handle compiled results and cleaning the fpu
42 // stack. The variable holds that location.
43 static address _call_stub_compiled_return;
44 static address _verify_mxcsr_entry;
45 static address _verify_fpu_cntrl_wrd_entry;
46 static jint _mxcsr_std;
47
48 public:
49 static address verify_mxcsr_entry() { return _verify_mxcsr_entry; }
50 static address verify_fpu_cntrl_wrd_entry() { return _verify_fpu_cntrl_wrd_entry; }
51
52 static address get_call_stub_compiled_return() { return _call_stub_compiled_return; }
53 static void set_call_stub_compiled_return(address ret) { _call_stub_compiled_return = ret; }
54 };
55
56 static bool returns_to_call_stub(address return_pc) { return (return_pc == _call_stub_return_address) ||
57 return_pc == i486::get_call_stub_compiled_return(); }