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# Copyright (c) 2012, 2017-2018 ARM Limited
# All rights reserved.
#
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# property including but not limited to intellectual property relating
# to a hardware implementation of the functionality of the software
# licensed hereunder. You may use the software subject to the license
# terms below provided that you ensure that this notice is replicated
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# modified or unmodified, in source code or in binary form.
#
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# 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
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# 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
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from m5 import fatal
import m5.objects
def config_etrace(cpu_cls, cpu_list, options):
if issubclass(cpu_cls, m5.objects.DerivO3CPU):
# Assign the same file name to all cpus for now. This must be
# revisited when creating elastic traces for multi processor systems.
for cpu in cpu_list:
# Attach the elastic trace probe listener. Set the protobuf trace
# file names. Set the dependency window size equal to the cpu it
# is attached to.
cpu.traceListener = m5.objects.ElasticTrace(
instFetchTraceFile = options.inst_trace_file,
dataDepTraceFile = options.data_trace_file,
depWindowSize = 3 * cpu.numROBEntries)
# Make the number of entries in the ROB, LQ and SQ very
# large so that there are no stalls due to resource
# limitation as such stalls will get captured in the trace
# as compute delay. For replay, ROB, LQ and SQ sizes are
# modelled in the Trace CPU.
cpu.numROBEntries = 512;
cpu.LQEntries = 128;
cpu.SQEntries = 128;
else:
fatal("%s does not support data dependency tracing. Use a CPU model of"
" type or inherited from DerivO3CPU.", cpu_cls)