Mercurial > hg > truffle
comparison src/cpu/x86/vm/stubRoutines_x86_32.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | dc7f315e41f7 |
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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(); } |