object_file.hh revision 9641:2285b98847d7
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 Arm, 56 Thumb, 57 Power 58 }; 59 60 enum OpSys { 61 UnknownOpSys, 62 Tru64, 63 Linux, 64 Solaris, 65 LinuxArmOABI 66 }; 67 68 protected: 69 const std::string filename; 70 int descriptor; 71 uint8_t *fileData; 72 size_t len; 73 74 Arch arch; 75 OpSys opSys; 76 77 ObjectFile(const std::string &_filename, int _fd, 78 size_t _len, uint8_t *_data, 79 Arch _arch, OpSys _opSys); 80 81 public: 82 virtual ~ObjectFile(); 83 84 void close(); 85 86 virtual bool loadSections(PortProxy& memProxy, Addr addrMask = 87 std::numeric_limits<Addr>::max()); 88 virtual bool loadGlobalSymbols(SymbolTable *symtab, Addr addrMask = 89 std::numeric_limits<Addr>::max()) = 0; 90 virtual bool loadLocalSymbols(SymbolTable *symtab, Addr addrMask = 91 std::numeric_limits<Addr>::max()) = 0; 92 virtual bool loadWeakSymbols(SymbolTable *symtab, Addr addrMask = 93 std::numeric_limits<Addr>::max()) 94 { return false; } 95 96 virtual bool isDynamic() { return false; } 97 virtual bool hasTLS() { return false; } 98 99 Arch getArch() const { return arch; } 100 OpSys getOpSys() const { return opSys; } 101 102 protected: 103 104 struct Section { 105 Addr baseAddr; 106 uint8_t *fileImage; 107 size_t size; 108 }; 109 110 Addr entry; 111 Addr globalPtr; 112 113 Section text; 114 Section data; 115 Section bss; 116 117 bool loadSection(Section *sec, PortProxy& memProxy, Addr addrMask); 118 void setGlobalPointer(Addr global_ptr) { globalPtr = global_ptr; } 119 120 public: 121 Addr entryPoint() const { return entry; } 122 123 Addr globalPointer() const { return globalPtr; } 124 125 Addr textBase() const { return text.baseAddr; } 126 Addr dataBase() const { return data.baseAddr; } 127 Addr bssBase() const { return bss.baseAddr; } 128 129 size_t textSize() const { return text.size; } 130 size_t dataSize() const { return data.size; } 131 size_t bssSize() const { return bss.size; } 132 133 /* This function allows you to override the base address where 134 * a binary is going to be loaded or set it if the binary is just a 135 * blob that doesn't include an object header. 136 * @param a address to load the binary/text section at 137 */ 138 void setTextBase(Addr a) { text.baseAddr = a; } 139}; 140 141ObjectFile *createObjectFile(const std::string &fname, bool raw = false); 142 143 144#endif // __OBJECT_FILE_HH__ 145