/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#if !defined(_WINDOWS) && !defined(__APPLE__)

#include "memory/allocation.hpp"

#include "utilities/decoder.hpp"

#include "utilities/elfFile.hpp"

/*

 * symbol table object represents a symbol section in an elf file.

 * Whenever possible, it will load all symbols from the corresponding section

 * of the elf file into memory. Otherwise, it will walk the section in file

 * to look up the symbol that nearest the given address.

 */

class ElfSymbolTable: public CHeapObj<mtInternal> {

  friend class ElfFile;

private:

  ElfSymbolTable*  _next;

  // file contains string table

  FILE* const      _fd;

  // corresponding section

  ElfSection      _section;

  NullDecoder::decoder_status _status;

public:

  ElfSymbolTable(FILE* const file, Elf_Shdr& shdr);

  ~ElfSymbolTable();

  // search the symbol that is nearest to the specified address.

  bool lookup(address addr, int* stringtableIndex, int* posIndex, int* offset, ElfFuncDescTable* funcDescTable);

  NullDecoder::decoder_status get_status() const { return _status; };

private:

  ElfSymbolTable* next() const { return _next; }

  void set_next(ElfSymbolTable* next) { _next = next; }

  bool compare(const Elf_Sym* sym, address addr, int* stringtableIndex, int* posIndex, int* offset, ElfFuncDescTable* funcDescTable);

};

#endif // !_WINDOWS and !__APPLE__