text: /*
   * Copyright (c) 2011 ARM Limited
   * All rights reserved
   *
   * The license below extends only to copyright in the software and shall
   * not be construed as granting a license to any other intellectual
   * property including but not limited to intellectual property relating
   * to a hardware implementation of the functionality of the software
   * licensed hereunder.  You may use the software subject to the license
   * terms below provided that you ensure that this notice is replicated
   * unmodified and in its entirety in all distributions of the software,
   * modified or unmodified, in source code or in binary form.
   *
   * Copyright (c) 2006 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: Ali Saidi
   *          Andreas Hansson
   */
  
  /**
   * @file
   * TranslatingPortProxy Object Declaration for FS.
   *
   * Port proxies are used when non structural entities need access to
   * the memory system. Proxy objects replace the previous
   * FunctionalPort, TranslatingPort and VirtualPort objects, which
   * provided the same functionality as the proxies, but were instances
   * of ports not corresponding to real structural ports of the
   * simulated system. Via the port proxies all the accesses go through
   * an actual port and thus are transparent to a potentially
   * distributed memory and automatically adhere to the memory map of
   * the system.
   */
  
  #ifndef __MEM_FS_TRANSLATING_PORT_PROXY_HH__
  #define __MEM_FS_TRANSLATING_PORT_PROXY_HH__
  
  #include "mem/port_proxy.hh"
  
  class ThreadContext;
  
  /**
   * A TranslatingPortProxy in FS mode translates a virtual address to a
   * physical address and then calls the read/write functions of the
   * port. If a thread context is provided the address can alway be
   * translated, If not it can only be translated if it is a simple
   * address masking operation (such as alpha super page accesses).
   */
  class FSTranslatingPortProxy : public PortProxy
  {
    private:
      ThreadContext* _tc;
  
    public:
  
      FSTranslatingPortProxy(ThreadContext* tc);
  
      FSTranslatingPortProxy(MasterPort &port, unsigned int cacheLineSize);
  
      ~FSTranslatingPortProxy();
  
      /** Version of readblob that translates virt->phys and deals
        * with page boundries. */
      void readBlob(Addr addr, uint8_t *p, int size) const override;
  
      /** Version of writeBlob that translates virt->phys and deals
        * with page boundries. */
      void writeBlob(Addr addr, const uint8_t *p, int size) const override;
  
      /**
       * Fill size bytes starting at addr with byte value val.
       */
      void memsetBlob(Addr address, uint8_t  v, int size) const override;
  };
  
  void CopyOut(ThreadContext *tc, void *dest, Addr src, size_t cplen);
  void CopyIn(ThreadContext *tc, Addr dest, const void *source, size_t cplen);
  void CopyStringOut(ThreadContext *tc, char *dst, Addr vaddr, size_t maxlen);
  void CopyStringIn(ThreadContext *tc, const char *src, Addr vaddr);
  
  #endif //__MEM_FS_TRANSLATING_PORT_PROXY_HH__
  