be28d96510
The following patches had unexpected interactions with the current upstream code and have been reverted for now: e07fd01651f3: power: Add support for power models 831c7f2f9e39: power: Low-power idle power state for idle CPUs 4f749e00b667: power: Add power states to ClockedObject Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> --HG-- extra : amend_source : 0b6fb073c6bbc24be533ec431eb51fbf1b269508
79 lines
3.3 KiB
Python
79 lines
3.3 KiB
Python
# Copyright (c) 2012 Mark D. Hill and David A. Wood
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# Copyright (c) 2015 The University of Wisconsin
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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: Nilay Vaish and Dibakar Gope
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from m5.SimObject import SimObject
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from m5.params import *
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class BranchPredictor(SimObject):
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type = 'BranchPredictor'
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cxx_class = 'BPredUnit'
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cxx_header = "cpu/pred/bpred_unit.hh"
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abstract = True
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numThreads = Param.Unsigned(1, "Number of threads")
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BTBEntries = Param.Unsigned(4096, "Number of BTB entries")
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BTBTagSize = Param.Unsigned(16, "Size of the BTB tags, in bits")
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RASSize = Param.Unsigned(16, "RAS size")
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instShiftAmt = Param.Unsigned(2, "Number of bits to shift instructions by")
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class LocalBP(BranchPredictor):
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type = 'LocalBP'
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cxx_class = 'LocalBP'
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cxx_header = "cpu/pred/2bit_local.hh"
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localPredictorSize = Param.Unsigned(2048, "Size of local predictor")
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localCtrBits = Param.Unsigned(2, "Bits per counter")
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class TournamentBP(BranchPredictor):
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type = 'TournamentBP'
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cxx_class = 'TournamentBP'
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cxx_header = "cpu/pred/tournament.hh"
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localPredictorSize = Param.Unsigned(2048, "Size of local predictor")
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localCtrBits = Param.Unsigned(2, "Bits per counter")
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localHistoryTableSize = Param.Unsigned(2048, "size of local history table")
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globalPredictorSize = Param.Unsigned(8192, "Size of global predictor")
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globalCtrBits = Param.Unsigned(2, "Bits per counter")
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choicePredictorSize = Param.Unsigned(8192, "Size of choice predictor")
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choiceCtrBits = Param.Unsigned(2, "Bits of choice counters")
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class BiModeBP(BranchPredictor):
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type = 'BiModeBP'
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cxx_class = 'BiModeBP'
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cxx_header = "cpu/pred/bi_mode.hh"
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globalPredictorSize = Param.Unsigned(8192, "Size of global predictor")
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globalCtrBits = Param.Unsigned(2, "Bits per counter")
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choicePredictorSize = Param.Unsigned(8192, "Size of choice predictor")
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choiceCtrBits = Param.Unsigned(2, "Bits of choice counters")
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