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#!/usr/bin/env python
"""A C to Verilog compiler - Command line interface"""

__author__ = "Jon Dawson"
__copyright__ = "Copyright (C) 2012, Jonathan P Dawson"
__version__ = "0.1"

import sys
import os
import subprocess
import atexit

from chips.compiler.compiler import comp

children = []
def cleanup():
    for child in children:
        child.terminate()
atexit.register(cleanup)

if len(sys.argv) < 2 or "help" in sys.argv or "h" in sys.argv:
    print "Usage: c2verilog.py [options] <input_file>"
    print
    print "compile options:"
    print "  no_reuse      : prevent register resuse"
    print "  no_concurrent : prevent concurrency"
    print "  no_initialize_memory : don't initialize memory"
    print "  speed : optimize for speed (defaults to area)"
    print
    print "tool options:"
    print "  iverilog      : compiles using the icarus verilog compiler"
    print "  run           : runs compiled code, used with ghdl or modelsimoptions"
    sys.exit(-1)

input_file = sys.argv[-1]
options = sys.argv[1:-1]
name, inputs, outputs, documentation = comp(input_file, options)



#run the compiled design using the simulator of your choice.
if "iverilog" in sys.argv:
    verilog_file = os.path.abspath("%s.v"%name)
    process = subprocess.Popen(["iverilog", "-o", str(name), str(verilog_file)])
    children.append(process)
    result = process.wait()
    children.remove(process)

    if result:
      print "Verilog output failed to compile correctly"
      sys.exit(result)

    if "run" in sys.argv:
      process = subprocess.Popen(["vvp", str(name)])
      children.append(process)
      result = process.wait()
      children.remove(process)
      sys.exit(result)

#Add more tools here ...