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diff --git a/dev/disk_image.hh b/dev/disk_image.hh
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-/*
- * Copyright (c) 2001-2005 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.
- */
-
-/** @file
- * Disk Image Interfaces
- */
-
-#ifndef __DISK_IMAGE_HH__
-#define __DISK_IMAGE_HH__
-
-#include <fstream>
-
-#include "base/hashmap.hh"
-#include "sim/sim_object.hh"
-
-#define SectorSize (512)
-
-/**
- * Basic interface for accessing a disk image.
- */
-class DiskImage : public SimObject
-{
-  protected:
-    bool initialized;
-
-  public:
-    DiskImage(const std::string &name) : SimObject(name), initialized(false) {}
-    virtual ~DiskImage() {}
-
-    virtual off_t size() const = 0;
-
-    virtual off_t read(uint8_t *data, off_t offset) const = 0;
-    virtual off_t write(const uint8_t *data, off_t offset) = 0;
-};
-
-/**
- * Specialization for accessing a raw disk image
- */
-class RawDiskImage : public DiskImage
-{
-  protected:
-    mutable std::fstream stream;
-    std::string file;
-    bool readonly;
-    mutable off_t disk_size;
-
-  public:
-    RawDiskImage(const std::string &name, const std::string &filename,
-                 bool rd_only);
-    ~RawDiskImage();
-
-    void close();
-    void open(const std::string &filename, bool rd_only = false);
-
-    virtual off_t size() const;
-
-    virtual off_t read(uint8_t *data, off_t offset) const;
-    virtual off_t write(const uint8_t *data, off_t offset);
-};
-
-/**
- * Specialization for accessing a copy-on-write disk image layer.
- * A copy-on-write(COW) layer must be stacked on top of another disk
- * image layer this layer can be another CowDiskImage, or a
- * RawDiskImage.
- *
- * This object is designed to provide a mechanism for persistant
- * changes to a main disk image, or to provide a place for temporary
- * changes to the image to take place that later may be thrown away.
- */
-class CowDiskImage : public DiskImage
-{
-  public:
-    static const int VersionMajor;
-    static const int VersionMinor;
-
-  protected:
-    struct Sector {
-        uint8_t data[SectorSize];
-    };
-    typedef m5::hash_map<uint64_t, Sector *> SectorTable;
-
-  protected:
-    std::string filename;
-    DiskImage *child;
-    SectorTable *table;
-
-  public:
-    CowDiskImage(const std::string &name, DiskImage *kid, int hash_size);
-    CowDiskImage(const std::string &name, DiskImage *kid, int hash_size,
-                 const std::string &filename, bool read_only);
-    ~CowDiskImage();
-
-    void init(int hash_size);
-    bool open(const std::string &file);
-    void save();
-    void save(const std::string &file);
-    void writeback();
-    void serialize(std::ostream &os);
-    void unserialize(Checkpoint *cp, const std::string &section);
-
-    virtual off_t size() const;
-
-    virtual off_t read(uint8_t *data, off_t offset) const;
-    virtual off_t write(const uint8_t *data, off_t offset);
-};
-
-#endif // __DISK_IMAGE_HH__