AddressSpace.h

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//===-- AddressSpace.h ------------------------------------------*- C++ -*-===//
//
//                     The KLEE Symbolic Virtual Machine
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef KLEE_ADDRESSSPACE_H
#define KLEE_ADDRESSSPACE_H

#include "ObjectHolder.h"

#include "klee/Expr.h"
#include "klee/Internal/ADT/ImmutableMap.h"

namespace klee {
  class ExecutionState;
  class MemoryObject;
  class ObjectState;
  class TimingSolver;

  template<class T> class ref;

  typedef std::pair<const MemoryObject*, const ObjectState*> ObjectPair;
  typedef std::vector<ObjectPair> ResolutionList;  

  struct MemoryObjectLT {
    bool operator()(const MemoryObject *a, const MemoryObject *b) const;
  };
  
  typedef ImmutableMap<const MemoryObject*, ObjectHolder, MemoryObjectLT> MemoryMap;
  
  class AddressSpace {
  private:
    mutable unsigned cowKey;

    AddressSpace &operator=(const AddressSpace&); 
    
  public:
    MemoryMap objects;
    
  public:
    AddressSpace() : cowKey(1) {}
    AddressSpace(const AddressSpace &b) : cowKey(++b.cowKey), objects(b.objects) { }
    ~AddressSpace() {}

    bool resolveOne(uint64_t address, 
                    ObjectPair &result);

    bool resolveOne(ExecutionState &state, 
                    TimingSolver *solver,
                    ref<Expr> address,
                    ObjectPair &result,
                    bool &success);

    bool resolve(ExecutionState &state,
                 TimingSolver *solver,
                 ref<Expr> address, 
                 ResolutionList &rl, 
                 unsigned maxResolutions=0,
                 double timeout=0.);

    /***/

    void bindObject(const MemoryObject *mo, ObjectState *os);

    void unbindObject(const MemoryObject *mo);

    const ObjectState *findObject(const MemoryObject *mo) const;

    ObjectState *getWriteable(const MemoryObject *mo, const ObjectState *os);

    void copyOutConcretes();

    bool copyInConcretes();
  };
} // End klee namespace

#endif