object_file.hh revision 12
1/* 2 * Copyright (c) 2003 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 29#ifndef __OBJECT_FILE_HH__ 30#define __OBJECT_FILE_HH__ 31 32#include "isa_traits.hh" // for Addr 33 34class FunctionalMemory; 35class SymbolTable; 36 37class ObjectFile 38{ 39 protected: 40 const std::string filename; 41 int descriptor; 42 uint8_t *fileData; 43 size_t len; 44 45 ObjectFile(const std::string &_filename, int _fd, 46 size_t _len, uint8_t *_data); 47 48 public: 49 virtual ~ObjectFile(); 50 51 void close(); 52 53 virtual bool loadSections(FunctionalMemory *mem, 54 bool loadPhys = false) = 0; 55 virtual bool loadGlobalSymbols(SymbolTable *symtab) = 0; 56 virtual bool loadLocalSymbols(SymbolTable *symtab) = 0; 57 58 protected: 59 60 struct Section { 61 Addr baseAddr; 62 size_t size; 63 }; 64 65 Addr entry; 66 Addr globalPtr; 67 68 Section text; 69 Section data; 70 Section bss; 71 72 public: 73 Addr entryPoint() const { return entry; } 74 Addr globalPointer() const { return globalPtr; } 75 76 Addr textBase() const { return text.baseAddr; } 77 Addr dataBase() const { return data.baseAddr; } 78 Addr bssBase() const { return bss.baseAddr; } 79 80 size_t textSize() const { return text.size; } 81 size_t dataSize() const { return data.size; } 82 size_t bssSize() const { return bss.size; } 83}; 84 85ObjectFile *createObjectFile(const std::string &fname); 86 87 88#endif // __OBJECT_FILE_HH__ 89