1/* ----------------------------------------------------------------------- *
2 *
3 * Copyright (C) 2009 Intel Corporation. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version
7 * 2 as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 * 02110-1301, USA.
18 *
19 * H. Peter Anvin <hpa@linux.intel.com>
20 *
21 * -----------------------------------------------------------------------
22 *
23 * Outputs a small assembly wrapper with the appropriate symbols defined.
24 *
25 */
26
27#include <stdlib.h>
28#include <stdio.h>
29#include <string.h>
30#include <inttypes.h>
31#include <tools/le_byteshift.h>
32
33int main(int argc, char *argv[])
34{
35 uint32_t olen;
36 long ilen;
37 FILE *f = NULL;
38 int retval = 1;
39
40 if (argc < 2) {
41 fprintf(stderr, "Usage: %s compressed_file\n", argv[0]);
42 goto bail;
43 }
44
45 /* Get the information for the compressed kernel image first */
46
47 f = fopen(argv[1], "r");
48 if (!f) {
49 perror(argv[1]);
50 goto bail;
51 }
52
53
54 if (fseek(f, -4L, SEEK_END)) {
55 perror(argv[1]);
56 }
57
58 if (fread(&olen, sizeof(olen), 1, f) != 1) {
59 perror(argv[1]);
60 goto bail;
61 }
62
63 ilen = ftell(f);
64 olen = get_unaligned_le32(&olen);
65
66 printf(".section \".rodata..compressed\",\"a\",@progbits\n");
67 printf(".globl z_input_len\n");
68 printf("z_input_len = %lu\n", ilen);
69 printf(".globl z_output_len\n");
70 printf("z_output_len = %lu\n", (unsigned long)olen);
71
72 printf(".globl input_data, input_data_end\n");
73 printf("input_data:\n");
74 printf(".incbin \"%s\"\n", argv[1]);
75 printf("input_data_end:\n");
76
77 retval = 0;
78bail:
79 if (f)
80 fclose(f);
81 return retval;
82}
83