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/*
* 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.
*
* Authors: Erik Hallnor
*/
/**
* @file
* Declaration of a memory trace reader for a M5 memory trace.
*/
#include "cpu/trace/reader/m5_reader.hh"
#include "mem/trace/m5_format.hh"
#include "mem/mem_cmd.hh"
#include "params/M5Reader.hh"
using namespace std;
M5Reader::M5Reader(const string &name, const string &filename)
: MemTraceReader(name)
{
traceFile.open(filename.c_str(), ios::binary);
}
Tick
M5Reader::getNextReq(MemReqPtr &req)
{
M5Format ref;
MemReqPtr tmp_req;
// Need to read EOF char before eof() will return true.
traceFile.read((char*) &ref, sizeof(ref));
if (!traceFile.eof()) {
//traceFile.read((char*) &ref, sizeof(ref));
#ifndef NDEBUG
int gcount = traceFile.gcount();
assert(gcount != 0 || traceFile.eof());
assert(gcount == sizeof(ref));
assert(ref.cmd < 12);
#endif
tmp_req = new MemReq();
tmp_req->paddr = ref.paddr;
tmp_req->asid = ref.asid;
// Assume asid == thread_num
tmp_req->thread_num = ref.asid;
tmp_req->cmd = (MemCmdEnum)ref.cmd;
tmp_req->size = ref.size;
tmp_req->dest = ref.dest;
} else {
ref.cycle = 0;
}
req = tmp_req;
return ref.cycle;
}
M5Reader *
M5ReaderParams::create()
{
return new M5Reader(name, filename);
}
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