object_file.hh revision 2520
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 29#ifndef __OBJECT_FILE_HH__ 30#define __OBJECT_FILE_HH__ 31 32#include <limits> 33#include <string> 34 35#include "sim/host.hh" // for Addr 36 37class Port; 38class SymbolTable; 39 40class ObjectFile 41{ 42 public: 43 44 enum Arch { 45 UnknownArch, 46 Alpha, 47 SPARC, 48 Mips 49 }; 50 51 enum OpSys { 52 UnknownOpSys, 53 Tru64, 54 Linux, 55 Solaris 56 }; 57 58 protected: 59 const std::string filename; 60 int descriptor; 61 uint8_t *fileData; 62 size_t len; 63 64 Arch arch; 65 OpSys opSys; 66 67 ObjectFile(const std::string &_filename, int _fd, 68 size_t _len, uint8_t *_data, 69 Arch _arch, OpSys _opSys); 70 71 public: 72 virtual ~ObjectFile(); 73 74 void close(); 75 76 virtual bool loadSections(Port *memPort, Addr addrMask = 77 std::numeric_limits<Addr>::max()); 78 virtual bool loadGlobalSymbols(SymbolTable *symtab) = 0; 79 virtual bool loadLocalSymbols(SymbolTable *symtab) = 0; 80 81 Arch getArch() const { return arch; } 82 OpSys getOpSys() const { return opSys; } 83 84 protected: 85 86 struct Section { 87 Addr baseAddr; 88 uint8_t *fileImage; 89 size_t size; 90 }; 91 92 Addr entry; 93 Addr globalPtr; 94 95 Section text; 96 Section data; 97 Section bss; 98 99 bool loadSection(Section *sec, Port *memPort, Addr addrMask); 100 void setGlobalPointer(Addr global_ptr) { globalPtr = global_ptr; } 101 102 public: 103 Addr entryPoint() const { return entry; } 104 105 Addr globalPointer() const { return globalPtr; } 106 107 Addr textBase() const { return text.baseAddr; } 108 Addr dataBase() const { return data.baseAddr; } 109 Addr bssBase() const { return bss.baseAddr; } 110 111 size_t textSize() const { return text.size; } 112 size_t dataSize() const { return data.size; } 113 size_t bssSize() const { return bss.size; } 114}; 115 116ObjectFile *createObjectFile(const std::string &fname); 117 118 119#endif // __OBJECT_FILE_HH__ 120