object_file.hh revision 1762 
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 "targetarch/isa_traits.hh"	// for Addr
33
34class FunctionalMemory;
35class SymbolTable;
36
37class ObjectFile
38{
39  public:
40
41    enum Arch {
42        UnknownArch,
43        Alpha
44    };
45
46    enum OpSys {
47        UnknownOpSys,
48        Tru64,
49        Linux
50    };
51
52  protected:
53    const std::string filename;
54    int descriptor;
55    uint8_t *fileData;
56    size_t len;
57
58    Arch  arch;
59    OpSys opSys;
60
61    ObjectFile(const std::string &_filename, int _fd,
62               size_t _len, uint8_t *_data,
63               Arch _arch, OpSys _opSys);
64
65  public:
66    virtual ~ObjectFile();
67
68    void close();
69
70    virtual bool loadSections(FunctionalMemory *mem,
71                              bool loadPhys = false) = 0;
72    virtual bool loadGlobalSymbols(SymbolTable *symtab) = 0;
73    virtual bool loadLocalSymbols(SymbolTable *symtab) = 0;
74
75    Arch  getArch()  const { return arch; }
76    OpSys getOpSys() const { return opSys; }
77
78  protected:
79
80    struct Section {
81        Addr baseAddr;
82        size_t size;
83    };
84
85    Addr entry;
86    Addr globalPtr;
87
88    Section text;
89    Section data;
90    Section bss;
91
92  public:
93    Addr entryPoint() const { return entry; }
94    Addr globalPointer() const { return globalPtr; }
95
96    Addr textBase() const { return text.baseAddr; }
97    Addr dataBase() const { return data.baseAddr; }
98    Addr bssBase() const { return bss.baseAddr; }
99
100    size_t textSize() const { return text.size; }
101    size_t dataSize() const { return data.size; }
102    size_t bssSize() const { return bss.size; }
103};
104
105ObjectFile *createObjectFile(const std::string &fname);
106
107
108#endif // __OBJECT_FILE_HH__
109