migen/sim/icarus.py

   1 # Copyright (C) 2012 Vermeer Manufacturing Co.
   2 # License: GPLv3 with additional permissions (see README).
   3
   4 import subprocess
   5 import os
   6
   7 def _str2file(filename, contents):
   8         f = open(filename, "w")
   9         f.write(contents)
  10         f.close()
  11
  12 class Runner:
  13         def __init__(self, extra_files=None, top_file="migensim_top.v", dut_file="migensim_dut.v", vvp_file=None, keep_files=False):
  14                 if extra_files is None: extra_files = []
  15                 if vvp_file is None: vvp_file = dut_file + "vp"
  16                 self.extra_files = extra_files
  17                 self.top_file = top_file
  18                 self.dut_file = dut_file
  19                 self.vvp_file = vvp_file
  20                 self.keep_files = keep_files
  21
  22         def start(self, c_top, c_dut):
  23                 _str2file(self.top_file, c_top)
  24                 _str2file(self.dut_file, c_dut)
  25                 subprocess.check_call(["iverilog", "-o", self.vvp_file, self.top_file, self.dut_file] + self.extra_files)
  26                 self.process = subprocess.Popen(["vvp", "-mmigensim", self.vvp_file])
  27
  28         def __del__(self):
  29                 if hasattr(self, "process"):
  30                         self.process.wait()
  31                 if not self.keep_files:
  32                         for f in [self.top_file, self.dut_file, self.vvp_file]:
  33                                 try:
  34                                         os.remove(f)
  35                                 except OSError:
  36                                         pass