object_file.hh revision 2472 
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 <string>
33
34#include "sim/host.hh"	// for Addr
35
36class TranslatingPort;
37class SymbolTable;
38
39class ObjectFile
40{
41  public:
42
43    enum Arch {
44        UnknownArch,
45        Alpha,
46        SPARC,
47        Mips
48    };
49
50    enum OpSys {
51        UnknownOpSys,
52        Tru64,
53        Linux,
54        Solaris
55    };
56
57  protected:
58    const std::string filename;
59    int descriptor;
60    uint8_t *fileData;
61    size_t len;
62
63    Arch  arch;
64    OpSys opSys;
65
66    ObjectFile(const std::string &_filename, int _fd,
67               size_t _len, uint8_t *_data,
68               Arch _arch, OpSys _opSys);
69
70  public:
71    virtual ~ObjectFile();
72
73    void close();
74
75    virtual bool loadSections(TranslatingPort *memPort, bool loadPhys = false);
76    virtual bool loadGlobalSymbols(SymbolTable *symtab) = 0;
77    virtual bool loadLocalSymbols(SymbolTable *symtab) = 0;
78
79    Arch  getArch()  const { return arch; }
80    OpSys getOpSys() const { return opSys; }
81
82  protected:
83
84    struct Section {
85        Addr     baseAddr;
86        uint8_t *fileImage;
87        size_t   size;
88    };
89
90    Addr entry;
91    Addr globalPtr;
92
93    Section text;
94    Section data;
95    Section bss;
96
97    bool loadSection(Section *sec, TranslatingPort *memPort, bool loadPhys);
98    void setGlobalPointer(Addr global_ptr) { globalPtr = global_ptr; }
99
100  public:
101    Addr entryPoint() const { return entry; }
102
103    Addr globalPointer() const { return globalPtr; }
104
105    Addr textBase() const { return text.baseAddr; }
106    Addr dataBase() const { return data.baseAddr; }
107    Addr bssBase() const { return bss.baseAddr; }
108
109    size_t textSize() const { return text.size; }
110    size_t dataSize() const { return data.size; }
111    size_t bssSize() const { return bss.size; }
112};
113
114ObjectFile *createObjectFile(const std::string &fname);
115
116
117#endif // __OBJECT_FILE_HH__
118