1 /*
2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2012, 2013 SAP AG. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "asm/macroAssembler.inline.hpp"
28 #include "asm/codeBuffer.hpp"
29 #include "memory/metaspaceShared.hpp"
30
31 // Generate the self-patching vtable method:
32 //
33 // This method will be called (as any other Klass virtual method) with
34 // the Klass itself as the first argument. Example:
35 //
36 // oop obj;
37 // int size = obj->klass()->klass_part()->oop_size(this);
38 //
39 // for which the virtual method call is Klass::oop_size();
40 //
41 // The dummy method is called with the Klass object as the first
42 // operand, and an object as the second argument.
43 //
44
45 //=====================================================================
46
47 // All of the dummy methods in the vtable are essentially identical,
48 // differing only by an ordinal constant, and they bear no releationship
49 // to the original method which the caller intended. Also, there needs
50 // to be 'vtbl_list_size' instances of the vtable in order to
51 // differentiate between the 'vtable_list_size' original Klass objects.
52
generate_vtable_methods(void ** vtbl_list,void ** vtable,char ** md_top,char * md_end,char ** mc_top,char * mc_end)53 void MetaspaceShared::generate_vtable_methods(void** vtbl_list,
54 void** vtable,
55 char** md_top,
56 char* md_end,
57 char** mc_top,
58 char* mc_end) {
59 Unimplemented();
60 }
61
62