xref: /openbmc/qemu/scripts/modinfo-generate.py (revision 24ce7aa77dd1a3095d994bf53d60cce6e672cf4d) 
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            elif kind == 'kconfig':
52                pass # ignore
53            else:
54                print("unknown:", kind)
55                exit(1)
56
57    print("    .name = \"%s\"," % name)
58    if arch != "":
59        print("    .arch = %s," % arch)
60    print_array("objs", objs)
61    print_array("deps", deps)
62    print_array("opts", opts)
63    print("},{");
64    return deps
65
66def print_pre():
67    print("/* generated by scripts/modinfo-generate.py */")
68    print("#include \"qemu/osdep.h\"")
69    print("#include \"qemu/module.h\"")
70    print("const QemuModinfo qemu_modinfo[] = {{")
71
72def print_post():
73    print("    /* end of list */")
74    print("}};")
75
76def main(args):
77    deps = {}
78    print_pre()
79    for modinfo in args:
80        with open(modinfo) as f:
81            lines = f.readlines()
82        print("    /* %s */" % modinfo)
83        (basename, ext) = os.path.splitext(modinfo)
84        deps[basename] = generate(basename, lines)
85    print_post()
86
87    flattened_deps = {flat.strip('" ') for dep in deps.values() for flat in dep}
88    error = False
89    for dep in flattened_deps:
90        if dep not in deps.keys():
91            print("Dependency {} cannot be satisfied".format(dep),
92                  file=sys.stderr)
93            error = True
94
95    if error:
96        exit(1)
97
98if __name__ == "__main__":
99    main(sys.argv[1:])
100