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/*
* 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.
*
* Authors: Nathan Binkert
* Steve Reinhardt
*/
#ifndef __SYMTAB_HH__
#define __SYMTAB_HH__
#include <iosfwd>
#include <map>
#include <string>
#include "base/types.hh"
#include "sim/serialize.hh"
class SymbolTable
{
public:
typedef std::multimap<Addr, std::string> ATable;
typedef std::map<std::string, Addr> STable;
private:
ATable addrTable;
STable symbolTable;
private:
bool
upperBound(Addr addr, ATable::const_iterator &iter) const
{
// find first key *larger* than desired address
iter = addrTable.upper_bound(addr);
// if very first key is larger, we're out of luck
if (iter == addrTable.begin())
return false;
return true;
}
public:
SymbolTable() {}
SymbolTable(const std::string &file) { load(file); }
~SymbolTable() {}
void clear();
bool insert(Addr address, std::string symbol);
bool load(const std::string &file);
const ATable &getAddrTable() const { return addrTable; }
const STable &getSymbolTable() const { return symbolTable; }
public:
void serialize(const std::string &base, CheckpointOut &cp) const;
void unserialize(const std::string &base, CheckpointIn &cp);
public:
bool
findSymbol(Addr address, std::string &symbol) const
{
ATable::const_iterator i = addrTable.find(address);
if (i == addrTable.end())
return false;
// There are potentially multiple symbols that map to the same
// address. For simplicity, just return the first one.
symbol = (*i).second;
return true;
}
bool
findAddress(const std::string &symbol, Addr &address) const
{
STable::const_iterator i = symbolTable.find(symbol);
if (i == symbolTable.end())
return false;
address = (*i).second;
return true;
}
/// Find the nearest symbol equal to or less than the supplied
/// address (e.g., the label for the enclosing function).
/// @param addr The address to look up.
/// @param symbol Return reference for symbol string.
/// @param symaddr Return reference for symbol address.
/// @param nextaddr Address of following symbol (for
/// determining valid range of symbol).
/// @retval True if a symbol was found.
bool
findNearestSymbol(Addr addr, std::string &symbol, Addr &symaddr,
Addr &nextaddr) const
{
ATable::const_iterator i;
if (!upperBound(addr, i))
return false;
nextaddr = i->first;
--i;
symaddr = i->first;
symbol = i->second;
return true;
}
/// Overload for findNearestSymbol() for callers who don't care
/// about nextaddr.
bool
findNearestSymbol(Addr addr, std::string &symbol, Addr &symaddr) const
{
ATable::const_iterator i;
if (!upperBound(addr, i))
return false;
--i;
symaddr = i->first;
symbol = i->second;
return true;
}
bool
findNearestAddr(Addr addr, Addr &symaddr, Addr &nextaddr) const
{
ATable::const_iterator i;
if (!upperBound(addr, i))
return false;
nextaddr = i->first;
--i;
symaddr = i->first;
return true;
}
bool
findNearestAddr(Addr addr, Addr &symaddr) const
{
ATable::const_iterator i;
if (!upperBound(addr, i))
return false;
--i;
symaddr = i->first;
return true;
}
};
/// Global unified debugging symbol table (for target). Conceptually
/// there should be one of these per System object for full system,
/// and per Process object for non-full-system, but so far one big
/// global one has worked well enough.
extern SymbolTable *debugSymbolTable;
#endif // __SYMTAB_HH__
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