symtab.cc revision 56 
1/*
2 * Copyright (c) 2003 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#include <iostream>
30#include <fstream>
31#include <string>
32#include <vector>
33
34#include "sim/host.hh"
35#include "base/misc.hh"
36#include "base/str.hh"
37#include "base/loader/symtab.hh"
38
39using namespace std;
40
41bool
42SymbolTable::insert(Addr address, string symbol)
43{
44    if (!addrTable.insert(make_pair(address, symbol)).second)
45        return false;
46
47    if (!symbolTable.insert(make_pair(symbol, address)).second)
48        return false;
49
50    return true;
51}
52
53
54bool
55SymbolTable::load(const string &filename)
56{
57    string buffer;
58    ifstream file(filename.c_str());
59
60    if (!file) {
61        cerr << "Can't open symbol table file " << filename << endl;
62        fatal("file error");
63    }
64
65    while (!file.eof()) {
66        getline(file, buffer);
67        if (buffer.empty())
68            continue;
69
70        int idx = buffer.find(',');
71        if (idx == string::npos)
72            return false;
73
74        string address = buffer.substr(0, idx);
75        eat_white(address);
76        if (address.empty())
77            return false;
78
79        string symbol = buffer.substr(idx + 1);
80        eat_white(symbol);
81        if (symbol.empty())
82            return false;
83
84        Addr addr;
85        if (!to_number(address, addr))
86            return false;
87
88        if (!insert(addr, symbol))
89            return false;
90    }
91
92    file.close();
93
94    return true;
95}
96
97bool
98SymbolTable::findSymbol(Addr address, string &symbol) const
99{
100    ATable::const_iterator i = addrTable.find(address);
101    if (i == addrTable.end())
102        return false;
103
104    symbol = (*i).second;
105    return true;
106}
107
108bool
109SymbolTable::findAddress(const string &symbol, Addr &address) const
110{
111    STable::const_iterator i = symbolTable.find(symbol);
112    if (i == symbolTable.end())
113        return false;
114
115    address = (*i).second;
116    return true;
117}
118
119string
120SymbolTable::find(Addr addr) const
121{
122    string s;
123    findSymbol(addr, s);
124    return s;
125}
126
127Addr
128SymbolTable::find(const string &symbol) const
129{
130    Addr a = 0;
131    findAddress(symbol, a);
132    return a;
133}
134