LXR qemu/scripts/modinfo-generate.py

   1#!/usr/bin/env python3
   2# -*- coding: utf-8 -*-
   3
   4import os
   5import sys
   6
   7def 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
  13def 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
  35def 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
  64def 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
  70def print_post():
  71    print("    /* end of list */")
  72    print("}};")
  73
  74def 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
  96if __name__ == "__main__":
  97    main(sys.argv[1:])
  98