object_file.hh revision 4155:4ac95b9c9149
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 54 }; 55 56 enum OpSys { 57 UnknownOpSys, 58 Tru64, 59 Linux, 60 Solaris 61 }; 62 63 protected: 64 const std::string filename; 65 int descriptor; 66 uint8_t *fileData; 67 size_t len; 68 69 Arch arch; 70 OpSys opSys; 71 72 ObjectFile(const std::string &_filename, int _fd, 73 size_t _len, uint8_t *_data, 74 Arch _arch, OpSys _opSys); 75 76 public: 77 virtual ~ObjectFile(); 78 79 void close(); 80 81 virtual bool loadSections(Port *memPort, Addr addrMask = 82 std::numeric_limits<Addr>::max()); 83 virtual bool loadGlobalSymbols(SymbolTable *symtab, Addr addrMask = 84 std::numeric_limits<Addr>::max()) = 0; 85 virtual bool loadLocalSymbols(SymbolTable *symtab, Addr addrMask = 86 std::numeric_limits<Addr>::max()) = 0; 87 88 virtual bool isDynamic(); 89 90 Arch getArch() const { return arch; } 91 OpSys getOpSys() const { return opSys; } 92 93 protected: 94 95 struct Section { 96 Addr baseAddr; 97 uint8_t *fileImage; 98 size_t size; 99 }; 100 101 Addr entry; 102 Addr globalPtr; 103 104 Section text; 105 Section data; 106 Section bss; 107 108 bool loadSection(Section *sec, Port *memPort, Addr addrMask); 109 void setGlobalPointer(Addr global_ptr) { globalPtr = global_ptr; } 110 111 public: 112 Addr entryPoint() const { return entry; } 113 114 Addr globalPointer() const { return globalPtr; } 115 116 Addr textBase() const { return text.baseAddr; } 117 Addr dataBase() const { return data.baseAddr; } 118 Addr bssBase() const { return bss.baseAddr; } 119 120 size_t textSize() const { return text.size; } 121 size_t dataSize() const { return data.size; } 122 size_t bssSize() const { return bss.size; } 123 124 void setTextBase(Addr a) { text.baseAddr = a; } 125}; 126 127ObjectFile *createObjectFile(const std::string &fname, bool raw = false); 128 129 130#endif // __OBJECT_FILE_HH__ 131