dbeabedaf0
This patch moves the branch predictor files in the o3 and inorder directories to src/cpu/pred. This allows sharing the branch predictor across different cpu models. This patch was originally posted by Timothy Jones in July 2010 but never made it to the repository. --HG-- rename : src/cpu/o3/bpred_unit.cc => src/cpu/pred/bpred_unit.cc rename : src/cpu/o3/bpred_unit.hh => src/cpu/pred/bpred_unit.hh rename : src/cpu/o3/bpred_unit_impl.hh => src/cpu/pred/bpred_unit_impl.hh rename : src/cpu/o3/sat_counter.hh => src/cpu/pred/sat_counter.hh
70 lines
2.8 KiB
C++
70 lines
2.8 KiB
C++
/*
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* Copyright (c) 2004-2006 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Kevin Lim
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*/
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#include <string>
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#include "cpu/o3/deriv.hh"
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#include "params/DerivO3CPU.hh"
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DerivO3CPU *
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DerivO3CPUParams::create()
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{
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ThreadID actual_num_threads;
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if (FullSystem) {
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// Full-system only supports a single thread for the moment.
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actual_num_threads = 1;
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} else {
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if (workload.size() > numThreads) {
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fatal("Workload Size (%i) > Max Supported Threads (%i) on This CPU",
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workload.size(), numThreads);
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} else if (workload.size() == 0) {
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fatal("Must specify at least one workload!");
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}
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// In non-full-system mode, we infer the number of threads from
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// the workload if it's not explicitly specified.
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actual_num_threads =
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(numThreads >= workload.size()) ? numThreads : workload.size();
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}
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numThreads = actual_num_threads;
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// Default smtFetchPolicy to "RoundRobin", if necessary.
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std::string round_robin_policy = "RoundRobin";
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std::string single_thread = "SingleThread";
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if (actual_num_threads > 1 && single_thread.compare(smtFetchPolicy) == 0)
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smtFetchPolicy = round_robin_policy;
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else
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smtFetchPolicy = smtFetchPolicy;
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return new DerivO3CPU(this);
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}
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