1/*
2 * Copyright (c) 1997, 2019, 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.
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23 */
24
25#ifndef SHARE_UTILITIES_ELFSTRINGTABLE_HPP
26#define SHARE_UTILITIES_ELFSTRINGTABLE_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;
40private:
41 ElfStringTable* _next;
42 int _index; // section index
43 ElfSection _section;
44 FILE* const _fd;
45 NullDecoder::decoder_status _status;
46
47public:
48 ElfStringTable(FILE* const file, Elf_Shdr& shdr, int index);
49 ~ElfStringTable();
50
51 // section index
52 int index() const { return _index; };
53
54 // get string at specified offset
55 bool string_at(size_t offset, char* buf, int buflen);
56
57 // get status code
58 NullDecoder::decoder_status get_status() const {
59 return _status;
60 }
61
62private:
63 void set_next(ElfStringTable* next) {
64 _next = next;
65 }
66
67 ElfStringTable* next() const {
68 return _next;
69 }
70};
71
72#endif // !_WINDOWS && !__APPLE__
73
74#endif // SHARE_UTILITIES_ELFSTRINGTABLE_HPP
75