old_contents: from m5 import *
  from HierParams import HierParams
  from Serialize import Serialize
  from Statistics import Statistics
  from Trace import Trace
  
  class Root(SimObject):
      type = 'Root'
      clock = Param.RootClock('200MHz', "tick frequency")
      max_tick = Param.Tick('0', "maximum simulation ticks (0 = infinite)")
      progress_interval = Param.Tick('0',
          "print a progress message every n ticks (0 = never)")
      output_file = Param.String('cout', "file to dump simulator output to")
      checkpoint = Param.String('', "checkpoint file to load")
  #    hier = Param.HierParams(HierParams(do_data = False, do_events = True),
  #                            "shared memory hierarchy parameters")
  #    stats = Param.Statistics(Statistics(), "statistics object")
  #    trace = Param.Trace(Trace(), "trace object")
  #    serialize = Param.Serialize(Serialize(), "checkpoint generation options")
      hier = HierParams(do_data = False, do_events = True)
      stats = Statistics()
      trace = Trace()
      serialize = Serialize()
  
new_contents: from m5 import *
  from HierParams import HierParams
  from Serialize import Serialize
  from Statistics import Statistics
  from Trace import Trace
  from ExeTrace import ExecutionTrace
  
  class Root(SimObject):
      type = 'Root'
      clock = Param.RootClock('200MHz', "tick frequency")
      max_tick = Param.Tick('0', "maximum simulation ticks (0 = infinite)")
      progress_interval = Param.Tick('0',
          "print a progress message every n ticks (0 = never)")
      output_file = Param.String('cout', "file to dump simulator output to")
      checkpoint = Param.String('', "checkpoint file to load")
  #    hier = Param.HierParams(HierParams(do_data = False, do_events = True),
  #                            "shared memory hierarchy parameters")
  #    stats = Param.Statistics(Statistics(), "statistics object")
  #    trace = Param.Trace(Trace(), "trace object")
  #    serialize = Param.Serialize(Serialize(), "checkpoint generation options")
      hier = HierParams(do_data = False, do_events = True)
      stats = Statistics()
      trace = Trace()
      exetrace = ExecutionTrace()
      serialize = Serialize()
  
subject: Add execution trace object to Root.