disassembler.hpp revision 1472:c18cbe5936b8 
1/*
2 * Copyright (c) 2008, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25class decode_env;
26
27// The disassembler prints out assembly code annotated
28// with Java specific information.
29
30class Disassembler {
31  friend class decode_env;
32 private:
33  // this is the type of the dll entry point:
34  typedef void* (*decode_func)(void* start, void* end,
35                               void* (*event_callback)(void*, const char*, void*),
36                               void* event_stream,
37                               int (*printf_callback)(void*, const char*, ...),
38                               void* printf_stream,
39                               const char* options);
40  // points to the library.
41  static void*    _library;
42  // bailout
43  static bool     _tried_to_load_library;
44  // points to the decode function.
45  static decode_func _decode_instructions;
46  // tries to load library and return whether it succedded.
47  static bool load_library();
48
49  // Machine dependent stuff
50  #include "incls/_disassembler_pd.hpp.incl"
51
52 public:
53  static bool can_decode() {
54    return (_decode_instructions != NULL) || load_library();
55  }
56  static void decode(CodeBlob *cb,               outputStream* st = NULL);
57  static void decode(nmethod* nm,                outputStream* st = NULL);
58  static void decode(address begin, address end, outputStream* st = NULL);
59};
60