object_file.hh revision 2519
1/* 2 * Copyright (c) 2002-2004 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 <string> 33 34#include "sim/host.hh" // for Addr 35 36class Port; 37class SymbolTable; 38 39class ObjectFile 40{ 41 public: 42 43 enum Arch { 44 UnknownArch, 45 Alpha, 46 SPARC, 47 Mips 48 }; 49 50 enum OpSys { 51 UnknownOpSys, 52 Tru64, 53 Linux, 54 Solaris 55 }; 56 57 protected: 58 const std::string filename; 59 int descriptor; 60 uint8_t *fileData; 61 size_t len; 62 63 Arch arch; 64 OpSys opSys; 65 66 ObjectFile(const std::string &_filename, int _fd, 67 size_t _len, uint8_t *_data, 68 Arch _arch, OpSys _opSys); 69 70 public: 71 virtual ~ObjectFile(); 72 73 void close(); 74 75 virtual bool loadSections(Port *memPort, bool loadPhys = false); 76 virtual bool loadGlobalSymbols(SymbolTable *symtab) = 0; 77 virtual bool loadLocalSymbols(SymbolTable *symtab) = 0; 78 79 Arch getArch() const { return arch; } 80 OpSys getOpSys() const { return opSys; } 81 82 protected: 83 84 struct Section { 85 Addr baseAddr; 86 uint8_t *fileImage; 87 size_t size; 88 }; 89 90 Addr entry; 91 Addr globalPtr; 92 93 Section text; 94 Section data; 95 Section bss; 96 97 bool loadSection(Section *sec, Port *memPort, bool loadPhys); 98 void setGlobalPointer(Addr global_ptr) { globalPtr = global_ptr; } 99 100 public: 101 Addr entryPoint() const { return entry; } 102 103 Addr globalPointer() const { return globalPtr; } 104 105 Addr textBase() const { return text.baseAddr; } 106 Addr dataBase() const { return data.baseAddr; } 107 Addr bssBase() const { return bss.baseAddr; } 108 109 size_t textSize() const { return text.size; } 110 size_t dataSize() const { return data.size; } 111 size_t bssSize() const { return bss.size; } 112}; 113 114ObjectFile *createObjectFile(const std::string &fname); 115 116 117#endif // __OBJECT_FILE_HH__ 118