# 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)")