ibm_reader.hh

来自「M5,一个功能强大的多处理器系统模拟器.很多针对处理器架构,性能的研究都使用它作」· HH 代码 · 共 76 行

/*
 * Copyright (c) 2004, 2005
 * The Regents of The University of Michigan
 * All Rights Reserved
 *
 * This code is part of the M5 simulator.
 *
 * Permission is granted to use, copy, create derivative works and
 * redistribute this software and such derivative works for any
 * purpose, so long as the copyright notice above, this grant of
 * permission, and the disclaimer below appear in all copies made; and
 * so long as the name of The University of Michigan is not used in
 * any advertising or publicity pertaining to the use or distribution
 * of this software without specific, written prior authorization.
 *
 * THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION FROM THE
 * UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY PURPOSE, AND
 * WITHOUT WARRANTY BY THE UNIVERSITY OF MICHIGAN OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE. THE REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE
 * LIABLE FOR ANY DAMAGES, INCLUDING DIRECT, SPECIAL, INDIRECT,
 * INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM
 * ARISING OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN
 * IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGES.
 *
 * Authors: Erik G. Hallnor
 */

/**
 * @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__