/*
 * See the dyninst/COPYRIGHT file for copyright information.
 * 
 * We provide the Paradyn Tools (below described as "Paradyn")
 * on an AS IS basis, and do not warrant its validity or performance.
 * We reserve the right to update, modify, or discontinue this
 * software at any time.  We shall have no obligation to supply such
 * updates or modifications or any other form of support to you.
 * 
 * By your use of Paradyn, you understand and agree that we (or any
 * other person or entity with proprietary rights in Paradyn) are
 * under no obligation to provide either maintenance services,
 * update services, notices of latent defects, or correction of
 * defects for Paradyn.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#if !defined(INSTRUCTION_CACHE_H)
#define INSTRUCTION_CACHE_H

#include "dyntypes.h"
#include "bitArray.h"
#include <map>
#include "CFG.h"

using namespace Dyninst;


struct ReadWriteInfo
{
  bitArray read;
  bitArray written;
  int insnSize;
};


class InstructionCache
{
  std::map<Address, ReadWriteInfo> cache;
  ParseAPI::Function* currentFunction;

  public:
  InstructionCache(): currentFunction(NULL) {}
  bool getLivenessInfo(Address addr, ParseAPI::Function* func, ReadWriteInfo& rw);
  void insertInstructionInfo(Address addr, ReadWriteInfo rw, ParseAPI::Function* func);
  void clean() {cache.clear();}
  ParseAPI::Function* getCurFunc() {return currentFunction;}
};

#endif //!defined(INSTRUCTION_CACHE_H)