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"""

"""

from gem5.resources.resource import Resource
from gem5.isas import ISA
from gem5.components.memory import SingleChannelDDR3_1600
from gem5.components.boards.simple_board import SimpleBoard
from gem5.components.cachehierarchies.classic.no_cache import NoCache
from gem5.components.processors.simple_processor import SimpleProcessor
from gem5.components.processors.cpu_types import CPUTypes
from gem5.simulate.simulator import Simulator
from gem5.simulate.exit_event import ExitEvent

import m5

import argparse

parser = argparse.ArgumentParser()

parser.add_argument(
    "-t",
    "--tick-exits",
    type=int,
    nargs="+",
    required=True,
    help="Set the tick exits to exit.",
)

parser.add_argument(
    "-r",
    "--resource-directory",
    type=str,
    required=False,
    help="The directory in which resources will be downloaded or exist.",
)

args = parser.parse_args()

# Setup the system.
motherboard = SimpleBoard(
    clk_freq="3GHz",
    processor=SimpleProcessor(
        cpu_type=CPUTypes.TIMING,
        isa=ISA.X86,
        num_cores=1,
    ),
    memory=SingleChannelDDR3_1600(),
    cache_hierarchy=NoCache(),
)

# Set the workload
binary = Resource(
    "x86-hello64-static", resource_directory=args.resource_directory
)
motherboard.set_se_binary_workload(binary)


def scheduled_tick_generator():
    while True:
        print(f"Exiting at: {m5.curTick()}")
        yield False


# Run the simulation
simulator = Simulator(
    board=motherboard,
    on_exit_event={ExitEvent.SCHEDULED_TICK: scheduled_tick_generator()},
)

for tick in args.tick_exits:
    m5.scheduleTickExitFromCurrent(tick)

simulator.run()