Fri, 12 Feb 2010 10:34:11 -0800
6926048: Improve Zero performance
Summary: Make Zero figure out result types in a similar way to C++ interpreter implementation.
Reviewed-by: kvn
Contributed-by: gbenson@redhat.com
1 /*
2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
3 * Copyright 2008 Red Hat, Inc.
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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
22 * have any questions.
23 *
24 */
26 // | ... |
27 // +--------------------+ ------------------
28 // | frame_type | low addresses
29 // | next_frame | high addresses
30 // +--------------------+ ------------------
31 // | ... |
33 class FakeStubFrame : public ZeroFrame {
34 private:
35 FakeStubFrame() : ZeroFrame() {
36 ShouldNotCallThis();
37 }
39 protected:
40 enum Layout {
41 header_words = jf_header_words
42 };
44 public:
45 static FakeStubFrame *build(ZeroStack* stack);
47 public:
48 void identify_word(int frame_index,
49 int offset,
50 char* fieldbuf,
51 char* valuebuf,
52 int buflen) const {}
53 };