interpreterFrame_zero.hpp revision 13243:7235bc30c0d7 
1/*
2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2008, 2010 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 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.
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24 */
25
26#ifndef CPU_ZERO_VM_INTERPRETERFRAME_ZERO_HPP
27#define CPU_ZERO_VM_INTERPRETERFRAME_ZERO_HPP
28
29#include "interpreter/bytecodeInterpreter.hpp"
30#include "oops/method.hpp"
31#include "runtime/thread.hpp"
32#include "stack_zero.hpp"
33
34#ifdef CC_INTERP
35// |  ...               |
36// +--------------------+  ------------------
37// | stack slot n-1     |       low addresses
38// |  ...               |
39// | stack slot 0       |
40// | monitor 0 (maybe)  |
41// |  ...               |
42// | interpreter state  |
43// |  ...               |
44// | frame_type         |
45// | next_frame         |      high addresses
46// +--------------------+  ------------------
47// |  ...               |
48
49class InterpreterFrame : public ZeroFrame {
50  friend class AbstractInterpreter;
51
52 private:
53  InterpreterFrame() : ZeroFrame() {
54    ShouldNotCallThis();
55  }
56
57 protected:
58  enum Layout {
59    istate_off = jf_header_words +
60      (align_up_(sizeof(BytecodeInterpreter),
61                 wordSize) >> LogBytesPerWord) - 1,
62    header_words
63  };
64
65 public:
66  static InterpreterFrame *build(Method* const method, TRAPS);
67  static InterpreterFrame *build(int size, TRAPS);
68
69 public:
70  interpreterState interpreter_state() const {
71    return (interpreterState) addr_of_word(istate_off);
72  }
73
74 public:
75  void identify_word(int   frame_index,
76                     int   offset,
77                     char* fieldbuf,
78                     char* valuebuf,
79                     int   buflen) const;
80};
81#endif // CC_INTERP
82
83#endif // CPU_ZERO_VM_INTERPRETERFRAME_ZERO_HPP
84