# Copyright (c) 2006-2008 The Regents of The University of Michigan
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# Authors: Steve Reinhardt

# Simple test script
#
# "m5 test.py"

import os
import optparse
import sys
from os.path import join as joinpath

import m5
from m5.defines import buildEnv
from m5.objects import *
from m5.util import addToPath, fatal

if buildEnv['FULL_SYSTEM']:
    fatal("This script requires syscall emulation mode (*_SE).")

addToPath('../common')

import Simulation
from Caches import *
from cpu2000 import *

# Get paths we might need.  It's expected this file is in m5/configs/example.
config_path = os.path.dirname(os.path.abspath(__file__))
config_root = os.path.dirname(config_path)
m5_root = os.path.dirname(config_root)

parser = optparse.OptionParser()

# Benchmark options
parser.add_option("-c", "--cmd",
    default=joinpath(m5_root, "tests/test-progs/hello/bin/alpha/linux/hello"),
    help="The binary to run in syscall emulation mode.")
parser.add_option("-o", "--options", default="",
    help='The options to pass to the binary, use " " around the entire string')
parser.add_option("-i", "--input", default="", help="Read stdin from a file.")
parser.add_option("--output", default="", help="Redirect stdout to a file.")
parser.add_option("--errout", default="", help="Redirect stderr to a file.")

execfile(os.path.join(config_root, "common", "Options.py"))

(options, args) = parser.parse_args()

if args:
    print "Error: script doesn't take any positional arguments"
    sys.exit(1)

if options.bench:
    try:
        if buildEnv['TARGET_ISA'] != 'alpha':
            print >>sys.stderr, "Simpoints code only works for Alpha ISA at this time"
            sys.exit(1)
        exec("workload = %s('alpha', 'tru64', 'ref')" % options.bench)
        process = workload.makeLiveProcess()
    except:
        print >>sys.stderr, "Unable to find workload for %s" % options.bench
        sys.exit(1)
else:
    process = LiveProcess()
    process.executable = options.cmd
    process.cmd = [options.cmd] + options.options.split()


if options.input != "":
    process.input = options.input
if options.output != "":
    process.output = options.output
if options.errout != "":
    process.errout = options.errout


# By default, set workload to path of user-specified binary
workloads = options.cmd
numThreads = 1

if options.detailed or options.inorder:
    #check for SMT workload
    workloads = options.cmd.split(';')
    if len(workloads) > 1:
        process = []
        smt_idx = 0
        inputs = []
        outputs = []
        errouts = []

        if options.input != "":
            inputs = options.input.split(';')
        if options.output != "":
            outputs = options.output.split(';')
        if options.errout != "":
            errouts = options.errout.split(';')

        for wrkld in workloads:
            smt_process = LiveProcess()
            smt_process.executable = wrkld
            smt_process.cmd = wrkld + " " + options.options
            if inputs and inputs[smt_idx]:
                smt_process.input = inputs[smt_idx]
            if outputs and outputs[smt_idx]:
                smt_process.output = outputs[smt_idx]
            if errouts and errouts[smt_idx]:
                smt_process.errout = errouts[smt_idx]
            process += [smt_process, ]
            smt_idx += 1
    numThreads = len(workloads)
    
(CPUClass, test_mem_mode, FutureClass) = Simulation.setCPUClass(options)

CPUClass.clock = '2GHz'
CPUClass.numThreads = numThreads;

np = options.num_cpus

system = System(cpu = [CPUClass(cpu_id=i) for i in xrange(np)],
                physmem = PhysicalMemory(range=AddrRange("512MB")),
                membus = Bus(), mem_mode = test_mem_mode)

system.physmem.port = system.membus.port

if options.l2cache:
    system.l2 = L2Cache(size='2MB')
    system.tol2bus = Bus()
    system.l2.cpu_side = system.tol2bus.port
    system.l2.mem_side = system.membus.port

for i in xrange(np):
    if options.caches:
        system.cpu[i].addPrivateSplitL1Caches(L1Cache(size = '32kB'),
                                              L1Cache(size = '64kB'))
    if options.l2cache:
        system.cpu[i].connectMemPorts(system.tol2bus)
    else:
        system.cpu[i].connectMemPorts(system.membus)
    system.cpu[i].workload = process

    if options.fastmem:
        system.cpu[0].physmem_port = system.physmem.port

root = Root(system = system)

Simulation.run(options, root, system, FutureClass)