object_file.hh revision 10810
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 FreeBSD 68 }; 69 70 protected: 71 const std::string filename; 72 int descriptor; 73 uint8_t *fileData; 74 size_t len; 75 76 Arch arch; 77 OpSys opSys; 78 79 ObjectFile(const std::string &_filename, int _fd, 80 size_t _len, uint8_t *_data, 81 Arch _arch, OpSys _opSys); 82 83 public: 84 virtual ~ObjectFile(); 85 86 void close(); 87 88 virtual bool loadSections(PortProxy& memProxy, Addr addrMask = 89 std::numeric_limits<Addr>::max(), 90 Addr offset = 0); 91 virtual bool loadGlobalSymbols(SymbolTable *symtab, Addr addrMask = 92 std::numeric_limits<Addr>::max()) = 0; 93 virtual bool loadLocalSymbols(SymbolTable *symtab, Addr addrMask = 94 std::numeric_limits<Addr>::max()) = 0; 95 virtual bool loadWeakSymbols(SymbolTable *symtab, Addr addrMask = 96 std::numeric_limits<Addr>::max()) 97 { return false; } 98 99 virtual bool isDynamic() { return false; } 100 virtual bool hasTLS() { return false; } 101 102 Arch getArch() const { return arch; } 103 OpSys getOpSys() const { return opSys; } 104 105 protected: 106 107 struct Section { 108 Addr baseAddr; 109 uint8_t *fileImage; 110 size_t size; 111 }; 112 113 Addr entry; 114 Addr globalPtr; 115 116 Section text; 117 Section data; 118 Section bss; 119 120 bool loadSection(Section *sec, PortProxy& memProxy, Addr addrMask, 121 Addr offset = 0); 122 void setGlobalPointer(Addr global_ptr) { globalPtr = global_ptr; } 123 124 public: 125 Addr entryPoint() const { return entry; } 126 127 Addr globalPointer() const { return globalPtr; } 128 129 Addr textBase() const { return text.baseAddr; } 130 Addr dataBase() const { return data.baseAddr; } 131 Addr bssBase() const { return bss.baseAddr; } 132 133 size_t textSize() const { return text.size; } 134 size_t dataSize() const { return data.size; } 135 size_t bssSize() const { return bss.size; } 136 137 /* This function allows you to override the base address where 138 * a binary is going to be loaded or set it if the binary is just a 139 * blob that doesn't include an object header. 140 * @param a address to load the binary/text section at 141 */ 142 void setTextBase(Addr a) { text.baseAddr = a; } 143}; 144 145ObjectFile *createObjectFile(const std::string &fname, bool raw = false); 146 147 148#endif // __OBJECT_FILE_HH__ 149