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comparison miscprog/cinitdump.c @ 268:e493fcff28ab

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cinitdump program written, compiles
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 19 Jan 2018 06:19:59 +0000
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267:ace3136d0601 268:e493fcff28ab
1 /*
2 * This program dumps the cinit section records from a firmware image
3 * sans symbols, given just the cinit start address and knowing the
4 * record structure.
5 */
6
7 #include <sys/types.h>
8 #include <stdio.h>
9 #include <stdlib.h>
10
11 FILE *inf;
12 u_long offset;
13
14 u_long
15 get_word()
16 {
17 u_char bytes[4];
18 u_long word;
19
20 fread(bytes, 1, 4, inf);
21 word = bytes[0] | (bytes[1] << 8) | (bytes[2] << 16) | (bytes[3] << 24);
22 printf("%8lx:\t%08lx\n", offset, word);
23 offset += 4;
24 return word;
25 }
26
27 main(argc, argv)
28 char **argv;
29 {
30 u_long len, count;
31
32 if (argc != 3) {
33 fprintf(stderr, "usage: %s filename start-addr\n", argv[0]);
34 exit(1);
35 }
36 inf = fopen(argv[1], "r");
37 if (!inf) {
38 perror(argv[1]);
39 exit(1);
40 }
41 offset = strtoul(argv[2], 0, 0);
42 fseek(inf, offset, SEEK_SET);
43
44 for (;;) {
45 len = get_word();
46 if (!len)
47 break;
48 len = (len + 3) & ~3;
49 get_word(); /* bss address */
50 for (count = 0; count < len; count += 4)
51 get_word();
52 putchar('\n');
53 }
54 exit(0);
55 }