scripts/dependencies.py

   1 #!/usr/bin/python3
   2
   3 # Create makefile dependencies for VHDL files, looking for "use work" and
   4 # "entity work" declarations
   5
   6 import sys
   7 import re
   8 import os
   9 from collections import defaultdict
  10
  11 if len(sys.argv) == 1 and sys.argv[1] == '--help':
  12     print("Usage: dependencies.py [--synth]")
  13     sys.exit(1)
  14
  15 synth = False
  16 args = sys.argv[1:]
  17 if sys.argv[1] == '--synth':
  18     synth = True
  19     args = sys.argv[2:]
  20
  21 # Look at what a file provides
  22 entity = re.compile('entity (.*) is')
  23 package = re.compile('package (.*) is')
  24
  25 # Look at what a file depends on
  26 work = re.compile('use work\.([^.]+)\.')
  27 entity_work = re.compile('entity work\.([^;]+)')
  28
  29 # Synthesis targets
  30 synth_provides = {
  31     "dmi_dtm" : "dmi_dtm_dummy.vhdl",
  32     "clock_generator" : "fpga/clk_gen_bypass.vhd",
  33     "main_bram" : "fpga/main_bram.vhdl",
  34     "pp_soc_uart" : "fpga/pp_soc_uart.vhd"
  35 }
  36
  37 # Simulation targets
  38 sim_provides = {
  39     "dmi_dtm" : "dmi_dtm_xilinx.vhdl",
  40     "clock_generator" : "fpga/clk_gen_bypass.vhd",
  41     "main_bram" : "sim_bram.vhdl",
  42     "pp_soc_uart" : "sim_uart.vhdl"
  43 }
  44
  45 if synth:
  46     provides = synth_provides
  47 else:
  48     provides = sim_provides
  49
  50 dependencies = defaultdict(set)
  51
  52 for filename in args:
  53     with open(filename, 'r') as f:
  54         for line in f:
  55             l = line.rstrip(os.linesep)
  56             m = entity.search(l)
  57             if m:
  58                 p = m.group(1)
  59                 if p not in provides:
  60                     provides[p] = filename
  61
  62             m = package.search(l)
  63             if m:
  64                 p = m.group(1)
  65                 if p not in provides:
  66                     provides[p] = filename
  67
  68             m = work.search(l)
  69             if m:
  70                 dependency = m.group(1)
  71                 dependencies[filename].add(dependency)
  72
  73             m = entity_work.search(l)
  74             if m:
  75                 dependency = m.group(1)
  76                 dependencies[filename].add(dependency)
  77
  78
  79 emitted = set()
  80 def chase_dependencies(filename):
  81     if filename not in dependencies:
  82         if filename not in emitted:
  83             print("%s " % (filename), end="")
  84             emitted.add(filename)
  85     else:
  86         for dep in dependencies[filename]:
  87             f = provides[dep]
  88             chase_dependencies(f)
  89             if f not in emitted:
  90                 print("%s " % (f), end="")
  91                 emitted.add(f)
  92
  93
  94 if synth:
  95     chase_dependencies("fpga/toplevel.vhdl")
  96     print("fpga/toplevel.vhdl")
  97 else:
  98     for filename in dependencies:
  99         (basename, suffix) = filename.split('.')
 100         print("%s.o:" % (basename), end="")
 101         for dependency in dependencies[filename]:
 102             p = provides[dependency]
 103             (basename2, suffix2) = p.split('.')
 104             print(" %s.o" % (basename2), end="")
 105         print("")