1/*
2 * Copyright (c) 2002-2005 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 * Authors: Nathan Binkert
29 */
30
31#include "base/loader/symtab.hh"
32
33#include <fstream>
34#include <iostream>
35#include <string>
36#include <vector>
37
38#include "base/logging.hh"
39#include "base/str.hh"
40#include "base/types.hh"
41#include "sim/serialize.hh"
42
43using namespace std;
44
45SymbolTable *debugSymbolTable = NULL;
46
47void
48SymbolTable::clear()
49{
50    addrTable.clear();
51    symbolTable.clear();
52}
53
54bool
55SymbolTable::insert(Addr address, string symbol)
56{
57    if (symbol.empty())
58        return false;
59
60    if (!symbolTable.insert(make_pair(symbol, address)).second)
61        return false;
62
63    // There can be multiple symbols for the same address, so always
64    // update the addrTable multimap when we see a new symbol name.
65    addrTable.insert(make_pair(address, symbol));
66
67    return true;
68}
69
70
71bool
72SymbolTable::load(const string &filename)
73{
74    string buffer;
75    ifstream file(filename.c_str());
76
77    if (!file)
78        fatal("file error: Can't open symbol table file %s\n", filename);
79
80    while (!file.eof()) {
81        getline(file, buffer);
82        if (buffer.empty())
83            continue;
84
85        string::size_type idx = buffer.find(',');
86        if (idx == string::npos)
87            return false;
88
89        string address = buffer.substr(0, idx);
90        eat_white(address);
91        if (address.empty())
92            return false;
93
94        string symbol = buffer.substr(idx + 1);
95        eat_white(symbol);
96        if (symbol.empty())
97            return false;
98
99        Addr addr;
100        if (!to_number(address, addr))
101            return false;
102
103        if (!insert(addr, symbol))
104            return false;
105    }
106
107    file.close();
108
109    return true;
110}
111
112void
113SymbolTable::serialize(const string &base, CheckpointOut &cp) const
114{
115    paramOut(cp, base + ".size", addrTable.size());
116
117    int i = 0;
118    ATable::const_iterator p, end = addrTable.end();
119    for (p = addrTable.begin(); p != end; ++p) {
120        paramOut(cp, csprintf("%s.addr_%d", base, i), p->first);
121        paramOut(cp, csprintf("%s.symbol_%d", base, i), p->second);
122        ++i;
123    }
124}
125
126void
127SymbolTable::unserialize(const string &base, CheckpointIn &cp)
128{
129    clear();
130    int size;
131    paramIn(cp, base + ".size", size);
132    for (int i = 0; i < size; ++i) {
133        Addr addr;
134        std::string symbol;
135
136        paramIn(cp, csprintf("%s.addr_%d", base, i), addr);
137        paramIn(cp, csprintf("%s.symbol_%d", base, i), symbol);
138        insert(addr, symbol);
139    }
140}
141