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__