src/mem/translating_port.hh

   1 /*
   2  * Copyright (c) 2001-2005 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Ron Dreslinski
  29  *          Ali Saidi
  30  */
  31
  32 #ifndef __MEM_TRANSLATING_PROT_HH__
  33 #define __MEM_TRANSLATING_PROT_HH__
  34
  35 #include "mem/port.hh"
  36
  37 class PageTable;
  38 class Process;
  39
  40 class TranslatingPort : public FunctionalPort
  41 {
  42   public:
  43     enum AllocType {
  44         Always,
  45         Never,
  46         NextPage
  47     };
  48
  49   private:
  50     PageTable *pTable;
  51     Process *process;
  52     AllocType allocating;
  53
  54   public:
  55     TranslatingPort(const std::string &_name,
  56                     Process *p, AllocType alloc);
  57     virtual ~TranslatingPort();
  58
  59     bool tryReadBlob(Addr addr, uint8_t *p, int size);
  60     bool tryWriteBlob(Addr addr, uint8_t *p, int size);
  61     bool tryMemsetBlob(Addr addr, uint8_t val, int size);
  62     bool tryWriteString(Addr addr, const char *str);
  63     bool tryReadString(std::string &str, Addr addr);
  64
  65     virtual void readBlob(Addr addr, uint8_t *p, int size);
  66     virtual void writeBlob(Addr addr, uint8_t *p, int size);
  67     virtual void memsetBlob(Addr addr, uint8_t val, int size);
  68
  69     void writeString(Addr addr, const char *str);
  70     void readString(std::string &str, Addr addr);
  71 };
  72
  73 #endif