Subversion Repositories a-z80

#!/usr/bin/env python3

#

# This script reads and parses selected Verilog and SystemVerilog modules

# and generates a set of Verilog include files for the Z80 top-level block.

#

#-------------------------------------------------------------------------------

#  Copyright (C) 2014  Goran Devic

#

#  This program is free software; you can redistribute it and/or modify it

#  under the terms of the GNU General Public License as published by the Free

#  Software Foundation; either version 2 of the License, or (at your option)

#  any later version.

#

#  This program is distributed in the hope that it will be useful, but WITHOUT

#  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

#  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

#  more details.

#-------------------------------------------------------------------------------

import os

with open('../top-level-files.txt') as f:

    files = f.read().splitlines()

# Create a file that should be included in the top-level source

with open('globals.vh', 'w') as file1:

    file1.write("// Automatically generated by genglobals.py\n")

# Keep track of duplicated symbols across all files

globals = []

# Read and parse each file from the list of input files

for infile in files:

    wires = []

    if not os.path.isfile('../' + infile):

        continue

    with open('../' + infile, "r") as f:

        for line in f:

            info = line.split()

            if len(info)>2:

                # There can be only one driver for each signal so we read only the outputs

                if info[0]=="output" and (info[1]=="wire" or info[1]=="reg" or info[1]=="logic"):

                    # There are 2 cases: wires and buses

                    if info[2].startswith('['):

                        wires.append(info[2] + ' ' + info[3].strip(';,'))

                    else:

                        wires.append(info[2].strip(';,'))

    if len(wires)>0:

        with open('globals.vh', 'a') as file1:

            file1.write("\n// Module: " + infile + "\n")

            for wire in wires:

                # Everything in globals is a wire

                # (Can't use 'logic' since some buses are bidirectional)

                if wire in globals:

                    file1.write("// wire " + wire + "; (previously defined)\n")

                else:

                    file1.write("wire " + wire + ";\n")

                    globals.append(wire)

# Touch files that include 'globals.vh' to ensure it will recompile correctly

os.utime("core.vh", None)

os.utime("z80_top_direct_n.v", None)

os.utime("z80_top_ifc_n.sv", None)