object_file.hh revision 10037
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 "base/types.hh" 39 40class PortProxy; 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 Arm64, 56 Arm, 57 Thumb, 58 Power 59 }; 60 61 enum OpSys { 62 UnknownOpSys, 63 Tru64, 64 Linux, 65 Solaris, 66 LinuxArmOABI 67 }; 68 69 protected: 70 const std::string filename; 71 int descriptor; 72 uint8_t *fileData; 73 size_t len; 74 75 Arch arch; 76 OpSys opSys; 77 78 ObjectFile(const std::string &_filename, int _fd, 79 size_t _len, uint8_t *_data, 80 Arch _arch, OpSys _opSys); 81 82 public: 83 virtual ~ObjectFile(); 84 85 void close(); 86 87 virtual bool loadSections(PortProxy& memProxy, Addr addrMask = 88 std::numeric_limits<Addr>::max(), 89 Addr offset = 0); 90 virtual bool loadGlobalSymbols(SymbolTable *symtab, Addr addrMask = 91 std::numeric_limits<Addr>::max()) = 0; 92 virtual bool loadLocalSymbols(SymbolTable *symtab, Addr addrMask = 93 std::numeric_limits<Addr>::max()) = 0; 94 virtual bool loadWeakSymbols(SymbolTable *symtab, Addr addrMask = 95 std::numeric_limits<Addr>::max()) 96 { return false; } 97 98 virtual bool isDynamic() { return false; } 99 virtual bool hasTLS() { return false; } 100 101 Arch getArch() const { return arch; } 102 OpSys getOpSys() const { return opSys; } 103 104 protected: 105 106 struct Section { 107 Addr baseAddr; 108 uint8_t *fileImage; 109 size_t size; 110 }; 111 112 Addr entry; 113 Addr globalPtr; 114 115 Section text; 116 Section data; 117 Section bss; 118 119 bool loadSection(Section *sec, PortProxy& memProxy, Addr addrMask, 120 Addr offset = 0); 121 void setGlobalPointer(Addr global_ptr) { globalPtr = global_ptr; } 122 123 public: 124 Addr entryPoint() const { return entry; } 125 126 Addr globalPointer() const { return globalPtr; } 127 128 Addr textBase() const { return text.baseAddr; } 129 Addr dataBase() const { return data.baseAddr; } 130 Addr bssBase() const { return bss.baseAddr; } 131 132 size_t textSize() const { return text.size; } 133 size_t dataSize() const { return data.size; } 134 size_t bssSize() const { return bss.size; } 135 136 /* This function allows you to override the base address where 137 * a binary is going to be loaded or set it if the binary is just a 138 * blob that doesn't include an object header. 139 * @param a address to load the binary/text section at 140 */ 141 void setTextBase(Addr a) { text.baseAddr = a; } 142}; 143 144ObjectFile *createObjectFile(const std::string &fname, bool raw = false); 145 146 147#endif // __OBJECT_FILE_HH__ 148