elf_object.hh revision 5070:3d6a1e37b944
1/* 2 * Copyright (c) 2003-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Steve Reinhardt 29 */ 30 31#ifndef __ELF_OBJECT_HH__ 32#define __ELF_OBJECT_HH__ 33 34#include "base/loader/object_file.hh" 35#include <set> 36 37class ElfObject : public ObjectFile 38{ 39 protected: 40 41 //These values are provided to a linux process by the kernel, so we 42 //need to keep them around. 43 Addr _programHeaderTable; 44 uint16_t _programHeaderSize; 45 uint16_t _programHeaderCount; 46 std::set<std::string> sectionNames; 47 48 /// Helper functions for loadGlobalSymbols() and loadLocalSymbols(). 49 bool loadSomeSymbols(SymbolTable *symtab, int binding); 50 51 ElfObject(const std::string &_filename, int _fd, 52 size_t _len, uint8_t *_data, 53 Arch _arch, OpSys _opSys); 54 55 void getSections(); 56 bool sectionExists(std::string sec); 57 58 public: 59 virtual ~ElfObject() {} 60 61 virtual bool loadGlobalSymbols(SymbolTable *symtab, Addr addrMask = 62 std::numeric_limits<Addr>::max()); 63 virtual bool loadLocalSymbols(SymbolTable *symtab, Addr addrMask = 64 std::numeric_limits<Addr>::max()); 65 66 virtual bool isDynamic() { return sectionExists(".interp"); } 67 virtual bool hasTLS() { return sectionExists(".tbss"); } 68 69 static ObjectFile *tryFile(const std::string &fname, int fd, 70 size_t len, uint8_t *data); 71 Addr programHeaderTable() {return _programHeaderTable;} 72 uint16_t programHeaderSize() {return _programHeaderSize;} 73 uint16_t programHeaderCount() {return _programHeaderCount;} 74}; 75 76#endif // __ELF_OBJECT_HH__ 77