scripts/modinfo-generate.py

   1 #!/usr/bin/env python3
   2 # -*- coding: utf-8 -*-
   3
   4 import os
   5 import sys
   6
   7 def print_array(name, values):
   8     if len(values) == 0:
   9         return
  10     list = ", ".join(values)
  11     print("    .%s = ((const char*[]){ %s, NULL })," % (name, list))
  12
  13 def parse_line(line):
  14     kind = ""
  15     data = ""
  16     get_kind = False
  17     get_data = False
  18     for item in line.split():
  19         if item == "MODINFO_START":
  20             get_kind = True
  21             continue
  22         if item.startswith("MODINFO_END"):
  23             get_data = False
  24             continue
  25         if get_kind:
  26             kind = item
  27             get_kind = False
  28             get_data = True
  29             continue
  30         if get_data:
  31             data += " " + item
  32             continue
  33     return (kind, data)
  34
  35 def generate(name, lines):
  36     arch = ""
  37     objs = []
  38     deps = []
  39     opts = []
  40     for line in lines:
  41         if line.find("MODINFO_START") != -1:
  42             (kind, data) = parse_line(line)
  43             if kind == 'obj':
  44                 objs.append(data)
  45             elif kind == 'dep':
  46                 deps.append(data)
  47             elif kind == 'opts':
  48                 opts.append(data)
  49             elif kind == 'arch':
  50                 arch = data;
  51             else:
  52                 print("unknown:", kind)
  53                 exit(1)
  54
  55     print("    .name = \"%s\"," % name)
  56     if arch != "":
  57         print("    .arch = %s," % arch)
  58     print_array("objs", objs)
  59     print_array("deps", deps)
  60     print_array("opts", opts)
  61     print("},{");
  62     return deps
  63
  64 def print_pre():
  65     print("/* generated by scripts/modinfo-generate.py */")
  66     print("#include \"qemu/osdep.h\"")
  67     print("#include \"qemu/module.h\"")
  68     print("const QemuModinfo qemu_modinfo[] = {{")
  69
  70 def print_post():
  71     print("    /* end of list */")
  72     print("}};")
  73
  74 def main(args):
  75     deps = {}
  76     print_pre()
  77     for modinfo in args:
  78         with open(modinfo) as f:
  79             lines = f.readlines()
  80         print("    /* %s */" % modinfo)
  81         (basename, ext) = os.path.splitext(modinfo)
  82         deps[basename] = generate(basename, lines)
  83     print_post()
  84
  85     flattened_deps = {flat.strip('" ') for dep in deps.values() for flat in dep}
  86     error = False
  87     for dep in flattened_deps:
  88         if dep not in deps.keys():
  89             print("Dependency {} cannot be satisfied".format(dep),
  90                   file=sys.stderr)
  91             error = True
  92
  93     if error:
  94         exit(1)
  95
  96 if __name__ == "__main__":
  97     main(sys.argv[1:])