gem5/base/loader/symtab.cc
Nathan Binkert 63bb46b6d8 Serialize the symbol tables
base/loader/symtab.cc:
    Add support for clearing out the symbol table
    Add support for serializing the symbol table (clear on unserialize)
    Don't allow empty symbols to be entered into the table
base/loader/symtab.hh:
    Add support for clearing out the symbol table
    Add support for serializing the symbol table
sim/system.cc:
    Serialize the kernel, console, and palcode symbol tables so that
    we can capture any dynamic symbols that are added and so that we
    don't have to have the same kernel binary around to get the
    symbols right

--HG--
extra : convert_revision : 779888c88aa530f3adcd37dc7600a335951d05f7
2005-11-20 18:42:12 -05:00

137 lines
3.8 KiB
C++

/*
* Copyright (c) 2002-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include "base/loader/symtab.hh"
#include "base/misc.hh"
#include "base/str.hh"
#include "sim/host.hh"
#include "sim/serialize.hh"
using namespace std;
SymbolTable *debugSymbolTable = NULL;
void
SymbolTable::clear()
{
addrTable.clear();
symbolTable.clear();
}
bool
SymbolTable::insert(Addr address, string symbol)
{
if (symbol.empty())
return false;
if (!addrTable.insert(make_pair(address, symbol)).second)
return false;
if (!symbolTable.insert(make_pair(symbol, address)).second)
return false;
return true;
}
bool
SymbolTable::load(const string &filename)
{
string buffer;
ifstream file(filename.c_str());
if (!file)
fatal("file error: Can't open symbol table file %s\n", filename);
while (!file.eof()) {
getline(file, buffer);
if (buffer.empty())
continue;
int idx = buffer.find(',');
if (idx == string::npos)
return false;
string address = buffer.substr(0, idx);
eat_white(address);
if (address.empty())
return false;
string symbol = buffer.substr(idx + 1);
eat_white(symbol);
if (symbol.empty())
return false;
Addr addr;
if (!to_number(address, addr))
return false;
if (!insert(addr, symbol))
return false;
}
file.close();
return true;
}
void
SymbolTable::serialize(const string &base, ostream &os)
{
paramOut(os, base + ".size", addrTable.size());
int i = 0;
ATable::const_iterator p, end = addrTable.end();
for (p = addrTable.begin(); p != end; ++p) {
paramOut(os, csprintf("%s.addr_%d", base, i), p->first);
paramOut(os, csprintf("%s.symbol_%d", base, i), p->second);
++i;
}
}
void
SymbolTable::unserialize(const string &base, Checkpoint *cp,
const string &section)
{
clear();
int size;
paramIn(cp, section, base + ".size", size);
for (int i = 0; i < size; ++i) {
Addr addr;
std::string symbol;
paramIn(cp, section, csprintf("%s.addr_%d", base, i), addr);
paramIn(cp, section, csprintf("%s.symbol_%d", base, i), symbol);
insert(addr, symbol);
}
}