AddressSpace.h

Go to the documentation of this file.

//===-- 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 "Memory.h"
 
#include "klee/Expr/Expr.h"
#include "klee/ADT/ImmutableMap.h"
#include "klee/System/Time.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 *, ref<ObjectState>, MemoryObjectLT>
      MemoryMap;
 
  class AddressSpace {
  private:
    mutable unsigned cowKey;
 
    AddressSpace &operator=(const AddressSpace &);
 
    int checkPointerInObject(ExecutionState &state, TimingSolver *solver,
                             ref<Expr> p, const ObjectPair &op,
                             ResolutionList &rl, unsigned maxResolutions) const;
 
  public:
    MemoryMap objects;
 
    AddressSpace() : cowKey(1) {}
    AddressSpace(const AddressSpace &b) : cowKey(++b.cowKey), objects(b.objects) { }
    ~AddressSpace() {}
 
    bool resolveOne(const ref<ConstantExpr> &address, 
                    ObjectPair &result) const;
 
    bool resolveOne(ExecutionState &state, 
                    TimingSolver *solver,
                    ref<Expr> address,
                    ObjectPair &result,
                    bool &success) const;
 
    bool resolve(ExecutionState &state,
                 TimingSolver *solver,
                 ref<Expr> p,
                 ResolutionList &rl, 
                 unsigned maxResolutions=0,
                 time::Span timeout=time::Span()) const;
 
    /***/
 
    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();
 
    bool copyInConcrete(const MemoryObject *mo, const ObjectState *os,
                        uint64_t src_address);
  };
} // End klee namespace
 
#endif /* KLEE_ADDRESSSPACE_H */