gem5/cpu/trace/reader/ibm_reader.hh

/*
 * Copyright (c) 2004-2005 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
 * Definition of a IBM memory trace format reader.
 */

#ifndef __IBM_READER_HH__
#define __IBM_READER_HH__

#include <stdio.h>
#include "cpu/trace/reader/mem_trace_reader.hh"
#include "mem/mem_req.hh"

/**
 * A memory trace reader for the IBM memory trace format.
 */
class IBMReader : public MemTraceReader
{
    /** IBM trace file. */
    FILE* trace;

    enum IBMType {
        IBM_INST_FETCH,
        IBM_READ_ONLY_FETCH,
        IBM_COND_EXCLUSIVE_FETCH,
        IBM_EXCLUSIVE_FETCH,
        IBM_FETCH_NO_DATA
    };

  public:
    /**
     * Construct an IBMReader.
     */
    IBMReader(const std::string &name, const std::string &filename);

    /**
     * Read the next request from the trace. Returns the request in the
     * provided MemReqPtr and the cycle of the request in the return value.
     * @param req Return the next request from the trace.
     * @return IBM traces don't store timing information, return 0
     */
    virtual Tick getNextReq(MemReqPtr &req);
};

#endif //__IBM_READER_HH__