1/*
2 * Copyright (c) 1997, 2012, 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
25#ifndef SHARE_VM_UTILITIES_ELF_STRING_TABLE_HPP
26#define SHARE_VM_UTILITIES_ELF_STRING_TABLE_HPP
27
28#if !defined(_WINDOWS) && !defined(__APPLE__)
29
30#include "memory/allocation.hpp"
31#include "utilities/decoder.hpp"
32#include "utilities/elfFile.hpp"
33
34
35// The string table represents a string table section in an elf file.
36// Whenever there is enough memory, it will load whole string table as
37// one blob. Otherwise, it will load string from file when requested.
38class ElfStringTable: CHeapObj<mtInternal> {
39  friend class ElfFile;
40 public:
41  ElfStringTable(FILE* file, Elf_Shdr shdr, int index);
42  ~ElfStringTable();
43
44  // section index
45  int index() { return m_index; };
46
47  // get string at specified offset
48  bool string_at(int offset, char* buf, int buflen);
49
50  // get status code
51  NullDecoder::decoder_status get_status() { return m_status; };
52
53 protected:
54  ElfStringTable*        m_next;
55
56  // section index
57  int                      m_index;
58
59  // holds complete string table if can
60  // allocate enough memory
61  const char*              m_table;
62
63  // file contains string table
64  FILE*                    m_file;
65
66  // section header
67  Elf_Shdr                 m_shdr;
68
69  // error code
70  NullDecoder::decoder_status  m_status;
71};
72
73#endif // !_WINDOWS && !__APPLE__
74
75#endif // SHARE_VM_UTILITIES_ELF_STRING_TABLE_HPP
76