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. 22 * 23 */ 24 25 #ifndef SHARE_UTILITIES_ELFSYMBOLTABLE_HPP 26 #define SHARE_UTILITIES_ELFSYMBOLTABLE_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 */ 41 class ElfSymbolTable: public CHeapObj<mtInternal> { 42 friend class ElfFile; 43 private: 44 ElfSymbolTable* _next; 45 46 // file contains string table 47 FILE* const _fd; 48 49 // corresponding section 50 ElfSection _section; 51 52 NullDecoder::decoder_status _status; 53 public: 54 ElfSymbolTable(FILE* const file, Elf_Shdr& shdr); 55 ~ElfSymbolTable(); 56 57 // search the symbol that is nearest to the specified address. 58 bool lookup(address addr, int* stringtableIndex, int* posIndex, int* offset, ElfFuncDescTable* funcDescTable); 59 get_status() const60 NullDecoder::decoder_status get_status() const { return _status; }; 61 private: next() const62 ElfSymbolTable* next() const { return _next; } set_next(ElfSymbolTable * next)63 void set_next(ElfSymbolTable* next) { _next = next; } 64 65 bool compare(const Elf_Sym* sym, address addr, int* stringtableIndex, int* posIndex, int* offset, ElfFuncDescTable* funcDescTable); 66 }; 67 68 #endif // !_WINDOWS and !__APPLE__ 69 70 #endif // SHARE_UTILITIES_ELFSYMBOLTABLE_HPP 71