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/*
* Copyright (c) 2004-2006 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: Kevin Lim
*/
#include <string>
#include "cpu/o3/cpu.hh"
#include "cpu/o3/impl.hh"
#include "params/DerivO3CPU.hh"
class DerivO3CPU : public FullO3CPU<O3CPUImpl>
{
public:
DerivO3CPU(DerivO3CPUParams *p)
: FullO3CPU<O3CPUImpl>(p)
{ }
};
DerivO3CPU *
DerivO3CPUParams::create()
{
ThreadID actual_num_threads;
if (FullSystem) {
// Full-system only supports a single thread for the moment.
actual_num_threads = 1;
} else {
if (workload.size() > numThreads) {
fatal("Workload Size (%i) > Max Supported Threads (%i) on This CPU",
workload.size(), numThreads);
} else if (workload.size() == 0) {
fatal("Must specify at least one workload!");
}
// In non-full-system mode, we infer the number of threads from
// the workload if it's not explicitly specified.
actual_num_threads =
(numThreads >= workload.size()) ? numThreads : workload.size();
}
numThreads = actual_num_threads;
// Default smtFetchPolicy to "RoundRobin", if necessary.
std::string round_robin_policy = "RoundRobin";
std::string single_thread = "SingleThread";
if (actual_num_threads > 1 && single_thread.compare(smtFetchPolicy) == 0)
smtFetchPolicy = round_robin_policy;
else
smtFetchPolicy = smtFetchPolicy;
instShiftAmt = 2;
return new DerivO3CPU(this);
}
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