src/hotspot/share/utilities/elfSymbolTable.hpp
author erikj
Tue, 12 Sep 2017 19:03:39 +0200
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parent 34641 hotspot/src/share/vm/utilities/elfSymbolTable.hpp@3755a5c95984
child 48975 2c35fd3c5789
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/*
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 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef SHARE_VM_UTILITIES_ELF_SYMBOL_TABLE_HPP
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#define SHARE_VM_UTILITIES_ELF_SYMBOL_TABLE_HPP
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#if !defined(_WINDOWS) && !defined(__APPLE__)
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#include "memory/allocation.hpp"
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#include "utilities/decoder.hpp"
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#include "utilities/elfFile.hpp"
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/*
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 * symbol table object represents a symbol section in an elf file.
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 * Whenever possible, it will load all symbols from the corresponding section
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 * of the elf file into memory. Otherwise, it will walk the section in file
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 * to look up the symbol that nearest the given address.
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 */
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class ElfSymbolTable: public CHeapObj<mtInternal> {
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  friend class ElfFile;
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 public:
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  ElfSymbolTable(FILE* file, Elf_Shdr shdr);
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  ~ElfSymbolTable();
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  // search the symbol that is nearest to the specified address.
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  bool lookup(address addr, int* stringtableIndex, int* posIndex, int* offset, ElfFuncDescTable* funcDescTable);
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  NullDecoder::decoder_status get_status() { return m_status; };
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 protected:
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  ElfSymbolTable*  m_next;
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  // holds a complete symbol table section if
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  // can allocate enough memory
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  Elf_Sym*            m_symbols;
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  // file contains string table
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  FILE*               m_file;
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  // section header
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  Elf_Shdr            m_shdr;
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  NullDecoder::decoder_status  m_status;
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  bool compare(const Elf_Sym* sym, address addr, int* stringtableIndex, int* posIndex, int* offset, ElfFuncDescTable* funcDescTable);
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};
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#endif // !_WINDOWS and !__APPLE__
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#endif // SHARE_VM_UTILITIES_ELF_SYMBOL_TABLE_HPP