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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 IBM memory trace format reader.
*/
#include <sstream>
#include "cpu/trace/reader/ibm_reader.hh"
#include "sim/builder.hh"
#include "base/misc.hh" // for fatal
using namespace std;
IBMReader::IBMReader(const string &name, const string &filename)
: MemTraceReader(name)
{
if (strcmp((filename.c_str() + filename.length() -3), ".gz") == 0) {
// Compressed file, need to use a pipe to gzip.
stringstream buf;
buf << "gzip -d -c " << filename << endl;
trace = popen(buf.str().c_str(), "r");
} else {
trace = fopen(filename.c_str(), "rb");
}
if (!trace) {
fatal("Can't open file %s", filename);
}
}
Tick
IBMReader::getNextReq(MemReqPtr &req)
{
MemReqPtr tmp_req;
int c = getc(trace);
if (c != EOF) {
tmp_req = new MemReq();
//int cpu_id = (c & 0xf0) >> 4;
int type = c & 0x0f;
// We have L1 miss traces, so all accesses are 128 bytes
tmp_req->size = 128;
tmp_req->paddr = 0;
for (int i = 2; i >= 0; --i) {
c = getc(trace);
if (c == EOF) {
fatal("Unexpected end of file");
}
tmp_req->paddr |= ((c & 0xff) << (8 * i));
}
tmp_req->paddr = tmp_req->paddr << 7;
switch(type) {
case IBM_COND_EXCLUSIVE_FETCH:
case IBM_READ_ONLY_FETCH:
tmp_req->cmd = Read;
break;
case IBM_EXCLUSIVE_FETCH:
case IBM_FETCH_NO_DATA:
tmp_req->cmd = Write;
break;
case IBM_INST_FETCH:
tmp_req->cmd = Read;
break;
default:
fatal("Unknown trace entry type.");
}
}
req = tmp_req;
return 0;
}
BEGIN_DECLARE_SIM_OBJECT_PARAMS(IBMReader)
Param<string> filename;
END_DECLARE_SIM_OBJECT_PARAMS(IBMReader)
BEGIN_INIT_SIM_OBJECT_PARAMS(IBMReader)
INIT_PARAM(filename, "trace file")
END_INIT_SIM_OBJECT_PARAMS(IBMReader)
CREATE_SIM_OBJECT(IBMReader)
{
return new IBMReader(getInstanceName(), filename);
}
REGISTER_SIM_OBJECT("IBMReader", IBMReader)
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