deriv.cc revision 8793
110259SAndrew.Bardsley@arm.com/*
213953Sgiacomo.gabrielli@arm.com * Copyright (c) 2004-2006 The Regents of The University of Michigan
310259SAndrew.Bardsley@arm.com * All rights reserved.
410259SAndrew.Bardsley@arm.com *
510259SAndrew.Bardsley@arm.com * Redistribution and use in source and binary forms, with or without
610259SAndrew.Bardsley@arm.com * modification, are permitted provided that the following conditions are
710259SAndrew.Bardsley@arm.com * met: redistributions of source code must retain the above copyright
810259SAndrew.Bardsley@arm.com * notice, this list of conditions and the following disclaimer;
910259SAndrew.Bardsley@arm.com * redistributions in binary form must reproduce the above copyright
1010259SAndrew.Bardsley@arm.com * notice, this list of conditions and the following disclaimer in the
1110259SAndrew.Bardsley@arm.com * documentation and/or other materials provided with the distribution;
1210259SAndrew.Bardsley@arm.com * neither the name of the copyright holders nor the names of its
1310259SAndrew.Bardsley@arm.com * contributors may be used to endorse or promote products derived from
1410259SAndrew.Bardsley@arm.com * this software without specific prior written permission.
1510259SAndrew.Bardsley@arm.com *
1610259SAndrew.Bardsley@arm.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1710259SAndrew.Bardsley@arm.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1810259SAndrew.Bardsley@arm.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
1910259SAndrew.Bardsley@arm.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
2010259SAndrew.Bardsley@arm.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
2110259SAndrew.Bardsley@arm.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
2210259SAndrew.Bardsley@arm.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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2610259SAndrew.Bardsley@arm.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
2710259SAndrew.Bardsley@arm.com *
2810259SAndrew.Bardsley@arm.com * Authors: Kevin Lim
2910259SAndrew.Bardsley@arm.com */
3010259SAndrew.Bardsley@arm.com
3110259SAndrew.Bardsley@arm.com#include <string>
3210259SAndrew.Bardsley@arm.com
3310259SAndrew.Bardsley@arm.com#include "config/full_system.hh"
3410259SAndrew.Bardsley@arm.com#include "config/use_checker.hh"
3510259SAndrew.Bardsley@arm.com#include "cpu/o3/cpu.hh"
3610259SAndrew.Bardsley@arm.com#include "cpu/o3/impl.hh"
3710259SAndrew.Bardsley@arm.com#include "params/DerivO3CPU.hh"
3810259SAndrew.Bardsley@arm.com
3910259SAndrew.Bardsley@arm.comclass DerivO3CPU : public FullO3CPU<O3CPUImpl>
4010259SAndrew.Bardsley@arm.com{
4110259SAndrew.Bardsley@arm.com  public:
4210259SAndrew.Bardsley@arm.com    DerivO3CPU(DerivO3CPUParams *p)
4310259SAndrew.Bardsley@arm.com        : FullO3CPU<O3CPUImpl>(p)
4410259SAndrew.Bardsley@arm.com    { }
4510259SAndrew.Bardsley@arm.com};
4610259SAndrew.Bardsley@arm.com
4710259SAndrew.Bardsley@arm.comDerivO3CPU *
4810259SAndrew.Bardsley@arm.comDerivO3CPUParams::create()
4910259SAndrew.Bardsley@arm.com{
5010259SAndrew.Bardsley@arm.com    ThreadID actual_num_threads;
5110259SAndrew.Bardsley@arm.com    if (FullSystem) {
5210259SAndrew.Bardsley@arm.com        // Full-system only supports a single thread for the moment.
5310259SAndrew.Bardsley@arm.com        actual_num_threads = 1;
5410259SAndrew.Bardsley@arm.com    } else {
5510259SAndrew.Bardsley@arm.com        if (workload.size() > numThreads) {
5610319SAndreas.Sandberg@ARM.com            fatal("Workload Size (%i) > Max Supported Threads (%i) on This CPU",
5710259SAndrew.Bardsley@arm.com                  workload.size(), numThreads);
5810259SAndrew.Bardsley@arm.com        } else if (workload.size() == 0) {
5910259SAndrew.Bardsley@arm.com            fatal("Must specify at least one workload!");
6010259SAndrew.Bardsley@arm.com        }
6111608Snikos.nikoleris@arm.com
6210259SAndrew.Bardsley@arm.com        // In non-full-system mode, we infer the number of threads from
6310259SAndrew.Bardsley@arm.com        // the workload if it's not explicitly specified.
6410259SAndrew.Bardsley@arm.com        actual_num_threads =
6510259SAndrew.Bardsley@arm.com            (numThreads >= workload.size()) ? numThreads : workload.size();
6610259SAndrew.Bardsley@arm.com    }
6710259SAndrew.Bardsley@arm.com
6810259SAndrew.Bardsley@arm.com    numThreads = actual_num_threads;
6910259SAndrew.Bardsley@arm.com
7010259SAndrew.Bardsley@arm.com    // Default smtFetchPolicy to "RoundRobin", if necessary.
7110259SAndrew.Bardsley@arm.com    std::string round_robin_policy = "RoundRobin";
7210259SAndrew.Bardsley@arm.com    std::string single_thread = "SingleThread";
7310259SAndrew.Bardsley@arm.com
7410319SAndreas.Sandberg@ARM.com    if (actual_num_threads > 1 && single_thread.compare(smtFetchPolicy) == 0)
7510259SAndrew.Bardsley@arm.com        smtFetchPolicy = round_robin_policy;
7610259SAndrew.Bardsley@arm.com    else
7710259SAndrew.Bardsley@arm.com        smtFetchPolicy = smtFetchPolicy;
7810259SAndrew.Bardsley@arm.com
7910259SAndrew.Bardsley@arm.com    instShiftAmt = 2;
8010259SAndrew.Bardsley@arm.com
8110259SAndrew.Bardsley@arm.com    return new DerivO3CPU(this);
8210259SAndrew.Bardsley@arm.com}
8310259SAndrew.Bardsley@arm.com