# Copyright (c) 2022 The Regents of the University of California
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import re

from typing import Optional

from testlib import *

if config.bin_path:
    resource_path = config.bin_path
else:
    resource_path = joinpath(absdirpath(__file__), "..", "resources")


def test_boot(
    cpu: str,
    num_cpus: int,
    mem_system: str,
    memory_class: str,
    length: str,
    to_tick: Optional[int] = None,
):

    name = f"{cpu}-cpu_{num_cpus}-cores_{mem_system}_{memory_class}_\
arm-boot-test"

    verifiers = []

    config_args = [
        "--cpu",
        cpu,
        "--num-cpus",
        str(num_cpus),
        "--mem-system",
        mem_system,
        "--dram-class",
        memory_class,
        "--resource-directory",
        resource_path,
    ]

    if to_tick:
        name += "_to-tick"
        exit_regex = re.compile(
            f"Exiting @ tick {str(to_tick)} because simulate\\(\\) limit reached"
        )
        verifiers.append(verifier.MatchRegex(exit_regex))
        config_args += ["--tick-exit", str(to_tick)]
    else:
        name += "_m5-exit"

    if mem_system == "chi":
        protocol_to_use = "CHI"
    elif mem_system == "mesi_two_level":
        protocol_to_use = None
    elif mem_system == "mi_example":
        protocol_to_use = "MI_example"
    else:
        protocol_to_use = None

    gem5_verify_config(
        name=name,
        verifiers=verifiers,
        fixtures=(),
        config=joinpath(
            config.base_dir,
            "tests",
            "gem5",
            "configs",
            "arm_boot_exit_run.py",
        ),
        config_args=config_args,
        valid_isas=(constants.all_compiled_tag,),
        valid_hosts=constants.supported_hosts,
        length=length,
        protocol=protocol_to_use,
    )


#### The long (pre-submit/Kokoro) tests ####

test_boot(
    cpu="atomic",
    num_cpus=1,
    mem_system="classic",
    memory_class="SingleChannelDDR3_1600",
    length=constants.quick_tag,
    to_tick=10000000000,
)

test_boot(
    cpu="timing",
    num_cpus=1,
    mem_system="classic",
    memory_class="SingleChannelDDR3_2133",
    length=constants.quick_tag,
    to_tick=10000000000,
)

test_boot(
    cpu="o3",
    num_cpus=1,
    mem_system="classic",
    memory_class="DualChannelDDR3_1600",
    length=constants.quick_tag,
    to_tick=10000000000,
)

test_boot(
    cpu="timing",
    num_cpus=2,
    mem_system="classic",
    memory_class="DualChannelDDR4_2400",
    length=constants.quick_tag,
    to_tick=10000000000,
)

test_boot(
    cpu="timing",
    num_cpus=2,
    mem_system="no_cache",
    memory_class="DualChannelDDR4_2400",
    length=constants.quick_tag,
    to_tick=10000000000,
)


test_boot(
    cpu="timing",
    num_cpus=2,
    mem_system="mesi_two_level",
    memory_class="DualChannelDDR4_2400",
    length=constants.quick_tag,
    to_tick=10000000000,
)


#### The long (nightly) tests ####

test_boot(
    cpu="atomic",
    num_cpus=4,
    mem_system="no_cache",
    memory_class="HBM2Stack",
    length=constants.long_tag,
)

test_boot(
    cpu="timing",
    num_cpus=2,
    mem_system="chi",
    memory_class="DualChannelDDR4_2400",
    length=constants.long_tag,
)