qemu

FORK: QEMU emulator
git clone https://git.neptards.moe/neptards/qemu.git
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modinfo-generate.py (3382B)

      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, enabled):
     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             elif kind == 'kconfig':
     52                 # don't add a module which dependency is not enabled
     53                 # in kconfig
     54                 if data.strip() not in enabled:
     55                     print("    /* module {} isn't enabled in Kconfig. */"
     56                           .format(data.strip()))
     57                     print("/* },{ */")
     58                     return None
     59             else:
     60                 print("unknown:", kind)
     61                 exit(1)
     62 
     63     print("    .name = \"%s\"," % name)
     64     if arch != "":
     65         print("    .arch = %s," % arch)
     66     print_array("objs", objs)
     67     print_array("deps", deps)
     68     print_array("opts", opts)
     69     print("},{")
     70     return {dep.strip('" ') for dep in deps}
     71 
     72 def print_pre():
     73     print("/* generated by scripts/modinfo-generate.py */")
     74     print("#include \"qemu/osdep.h\"")
     75     print("#include \"qemu/module.h\"")
     76     print("const QemuModinfo qemu_modinfo[] = {{")
     77 
     78 def print_post():
     79     print("    /* end of list */")
     80     print("}};")
     81 
     82 def main(args):
     83     if len(args) < 3 or args[0] != '--devices':
     84         print('Expected: modinfo-generate.py --devices '
     85               'config-device.mak [modinfo files]', file=sys.stderr)
     86         exit(1)
     87 
     88     # get all devices enabled in kconfig, from *-config-device.mak
     89     enabled = set()
     90     with open(args[1]) as file:
     91         for line in file.readlines():
     92             config = line.split('=')
     93             if config[1].rstrip() == 'y':
     94                 enabled.add(config[0][7:]) # remove CONFIG_
     95 
     96     deps = set()
     97     modules = set()
     98     print_pre()
     99     for modinfo in args[2:]:
    100         with open(modinfo) as f:
    101             lines = f.readlines()
    102         print("    /* %s */" % modinfo)
    103         (basename, _) = os.path.splitext(modinfo)
    104         moddeps = generate(basename, lines, enabled)
    105         if moddeps is not None:
    106             modules.add(basename)
    107             deps.update(moddeps)
    108     print_post()
    109 
    110     error = False
    111     for dep in deps.difference(modules):
    112         print("Dependency {} cannot be satisfied".format(dep),
    113               file=sys.stderr)
    114         error = True
    115 
    116     if error:
    117         exit(1)
    118 
    119 if __name__ == "__main__":
    120     main(sys.argv[1:])