object_file.hh revision 5874
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 * Authors: Nathan Binkert 29 * Steve Reinhardt 30 */ 31 32#ifndef __OBJECT_FILE_HH__ 33#define __OBJECT_FILE_HH__ 34 35#include <limits> 36#include <string> 37 38#include "sim/host.hh" // for Addr 39 40class Port; 41class SymbolTable; 42 43class ObjectFile 44{ 45 public: 46 47 enum Arch { 48 UnknownArch, 49 Alpha, 50 SPARC64, 51 SPARC32, 52 Mips, 53 X86_64, 54 I386, 55 Arm 56 }; 57 58 enum OpSys { 59 UnknownOpSys, 60 Tru64, 61 Linux, 62 Solaris 63 }; 64 65 protected: 66 const std::string filename; 67 int descriptor; 68 uint8_t *fileData; 69 size_t len; 70 71 Arch arch; 72 OpSys opSys; 73 74 ObjectFile(const std::string &_filename, int _fd, 75 size_t _len, uint8_t *_data, 76 Arch _arch, OpSys _opSys); 77 78 public: 79 virtual ~ObjectFile(); 80 81 void close(); 82 83 virtual bool loadSections(Port *memPort, Addr addrMask = 84 std::numeric_limits<Addr>::max()); 85 virtual bool loadGlobalSymbols(SymbolTable *symtab, Addr addrMask = 86 std::numeric_limits<Addr>::max()) = 0; 87 virtual bool loadLocalSymbols(SymbolTable *symtab, Addr addrMask = 88 std::numeric_limits<Addr>::max()) = 0; 89 90 virtual bool isDynamic() { return false; } 91 virtual bool hasTLS() { return false; } 92 93 Arch getArch() const { return arch; } 94 OpSys getOpSys() const { return opSys; } 95 96 protected: 97 98 struct Section { 99 Addr baseAddr; 100 uint8_t *fileImage; 101 size_t size; 102 }; 103 104 Addr entry; 105 Addr globalPtr; 106 107 Section text; 108 Section data; 109 Section bss; 110 111 bool loadSection(Section *sec, Port *memPort, Addr addrMask); 112 void setGlobalPointer(Addr global_ptr) { globalPtr = global_ptr; } 113 114 public: 115 Addr entryPoint() const { return entry; } 116 117 Addr globalPointer() const { return globalPtr; } 118 119 Addr textBase() const { return text.baseAddr; } 120 Addr dataBase() const { return data.baseAddr; } 121 Addr bssBase() const { return bss.baseAddr; } 122 123 size_t textSize() const { return text.size; } 124 size_t dataSize() const { return data.size; } 125 size_t bssSize() const { return bss.size; } 126 127 void setTextBase(Addr a) { text.baseAddr = a; } 128}; 129 130ObjectFile *createObjectFile(const std::string &fname, bool raw = false); 131 132 133#endif // __OBJECT_FILE_HH__ 134