# Copyright (c) 2005-2008 The Regents of The University of Michigan
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from m5.SimObject import *
from m5.params import *
from m5.proxy import *
from os import getcwd


class Process(SimObject):
    type = "Process"
    cxx_header = "sim/process.hh"
    cxx_class = "gem5::Process"

    @cxxMethod
    def map(self, vaddr, paddr, size, cacheable=False):
        pass

    input = Param.String("cin", "filename for stdin")
    output = Param.String("cout", "filename for stdout")
    errout = Param.String("cerr", "filename for stderr")
    system = Param.System(Parent.any, "system process will run on")
    useArchPT = Param.Bool(
        "false",
        "maintain an in-memory version of the page\
                            table in an architecture-specific format",
    )
    kvmInSE = Param.Bool("false", "initialize the process for KvmCPU in SE")
    maxStackSize = Param.MemorySize("64MiB", "maximum size of the stack")

    uid = Param.Int(100, "user id")
    euid = Param.Int(100, "effective user id")
    gid = Param.Int(100, "group id")
    egid = Param.Int(100, "effective group id")
    pid = Param.Int(100, "process id")
    ppid = Param.Int(0, "parent process id")
    pgid = Param.Int(100, "process group id")

    executable = Param.String("", "executable (overrides cmd[0] if set)")
    cmd = VectorParam.String("command line (executable plus arguments)")
    env = VectorParam.String([], "environment settings")
    cwd = Param.String(getcwd(), "current working directory")
    simpoint = Param.UInt64(0, "simulation point at which to start simulation")
    drivers = VectorParam.EmulatedDriver([], "Available emulated drivers")
    release = Param.String("5.1.0", "Linux kernel uname release")

    @classmethod
    def export_methods(cls, code):
        code("bool map(Addr vaddr, Addr paddr, int sz, bool cacheable=true);")


class EmulatedDriver(SimObject):
    type = "EmulatedDriver"
    cxx_header = "sim/emul_driver.hh"
    cxx_class = "gem5::EmulatedDriver"
    abstract = True
    filename = Param.String("device file name (under /dev)")