elfSymbolTable.hpp revision 5995:e7cbc95179c4 
1672SN/A/*
2672SN/A * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
3672SN/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4672SN/A *
5672SN/A * This code is free software; you can redistribute it and/or modify it
6672SN/A * under the terms of the GNU General Public License version 2 only, as
7672SN/A * published by the Free Software Foundation.
8672SN/A *
9672SN/A * This code is distributed in the hope that it will be useful, but WITHOUT
10672SN/A * 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_VM_UTILITIES_ELF_SYMBOL_TABLE_HPP
26#define SHARE_VM_UTILITIES_ELF_SYMBOL_TABLE_HPP
27
28#if !defined(_WINDOWS) && !defined(__APPLE__)
29
30
31#include "memory/allocation.hpp"
32#include "utilities/decoder.hpp"
33#include "utilities/elfFile.hpp"
34
35/*
36 * symbol table object represents a symbol section in an elf file.
37 * Whenever possible, it will load all symbols from the corresponding section
38 * of the elf file into memory. Otherwise, it will walk the section in file
39 * to look up the symbol that nearest the given address.
40 */
41class ElfSymbolTable: public CHeapObj<mtInternal> {
42  friend class ElfFile;
43 public:
44  ElfSymbolTable(FILE* file, Elf_Shdr shdr);
45  ~ElfSymbolTable();
46
47  // search the symbol that is nearest to the specified address.
48  bool lookup(address addr, int* stringtableIndex, int* posIndex, int* offset, ElfFuncDescTable* funcDescTable);
49
50  NullDecoder::decoder_status get_status() { return m_status; };
51
52 protected:
53  ElfSymbolTable*  m_next;
54
55  // holds a complete symbol table section if
56  // can allocate enough memory
57  Elf_Sym*            m_symbols;
58
59  // file contains string table
60  FILE*               m_file;
61
62  // section header
63  Elf_Shdr            m_shdr;
64
65  NullDecoder::decoder_status  m_status;
66};
67
68#endif // !_WINDOWS and !__APPLE__
69
70#endif // SHARE_VM_UTILITIES_ELF_SYMBOL_TABLE_HPP
71