1#!/usr/bin/env python3
2# SPDX-License-Identifier: BSD-2-Clause
3#
4# Copyright (c) 2018, Linaro Limited
5#
6
7import argparse
8import array
9import os
10import re
11import sys
12
13
14def get_args():
15
16    parser = argparse.ArgumentParser(description='Converts a binary file '
17                                     'into C source file defining binary '
18                                     'data as a constant byte array.')
19
20    parser.add_argument('--bin', required=True,
21                        help='Path to the input binary file')
22
23    parser.add_argument('--vname', required=True,
24                        help='Variable name for the generated table in '
25                        'the output C source file.')
26
27    parser.add_argument('--out', required=True,
28                        help='Path for the generated C file')
29
30    parser.add_argument('--text', required=False, action='store_true',
31                        help='Treat input as a text file')
32
33    return parser.parse_args()
34
35
36def main():
37
38    args = get_args()
39
40    with open(args.bin, 'rb') as indata:
41        bytes = indata.read()
42        if args.text:
43            bytes += b'\0'
44        size = len(bytes)
45
46    f = open(args.out, 'w')
47    f.write('/* Generated from ' + args.bin + ' by ' +
48            os.path.basename(__file__) + ' */\n\n')
49    f.write('#include <compiler.h>\n')
50    f.write('#include <stdint.h>\n')
51    if args.text:
52        f.write('__extension__ const char ' + args.vname + '[] = {\n')
53    else:
54        f.write('__extension__ const uint8_t ' + args.vname + '[] ' +
55                ' __aligned(__alignof__(uint64_t)) = {\n')
56    i = 0
57    while i < size:
58        if i % 8 == 0:
59            f.write('\t\t')
60        if args.text and i != size - 1 and bytes[i] == b'\0':
61            print('Error: null byte encountered in text file')
62            sys.exit(1)
63        f.write(hex(bytes[i]) + ',')
64        i = i + 1
65        if i % 8 == 0 or i == size:
66            f.write('\n')
67        else:
68            f.write(' ')
69    f.write('};\n')
70    f.close()
71
72
73if __name__ == "__main__":
74    main()
75