1#include "relocs.h"
 2
 3void die(char *fmt, ...)
 4{
 5	va_list ap;
 6	va_start(ap, fmt);
 7	vfprintf(stderr, fmt, ap);
 8	va_end(ap);
 9	exit(1);
10}
11
12static void usage(void)
13{
14	die("relocs [--abs-syms|--abs-relocs|--reloc-info|--text|--realmode]" \
15	    " vmlinux\n");
16}
17
18int main(int argc, char **argv)
19{
20	int show_absolute_syms, show_absolute_relocs, show_reloc_info;
21	int as_text, use_real_mode;
22	const char *fname;
23	FILE *fp;
24	int i;
25	unsigned char e_ident[EI_NIDENT];
26
27	show_absolute_syms = 0;
28	show_absolute_relocs = 0;
29	show_reloc_info = 0;
30	as_text = 0;
31	use_real_mode = 0;
32	fname = NULL;
33	for (i = 1; i < argc; i++) {
34		char *arg = argv[i];
35		if (*arg == '-') {
36			if (strcmp(arg, "--abs-syms") == 0) {
37				show_absolute_syms = 1;
38				continue;
39			}
40			if (strcmp(arg, "--abs-relocs") == 0) {
41				show_absolute_relocs = 1;
42				continue;
43			}
44			if (strcmp(arg, "--reloc-info") == 0) {
45				show_reloc_info = 1;
46				continue;
47			}
48			if (strcmp(arg, "--text") == 0) {
49				as_text = 1;
50				continue;
51			}
52			if (strcmp(arg, "--realmode") == 0) {
53				use_real_mode = 1;
54				continue;
55			}
56		}
57		else if (!fname) {
58			fname = arg;
59			continue;
60		}
61		usage();
62	}
63	if (!fname) {
64		usage();
65	}
66	fp = fopen(fname, "r");
67	if (!fp) {
68		die("Cannot open %s: %s\n", fname, strerror(errno));
69	}
70	if (fread(&e_ident, 1, EI_NIDENT, fp) != EI_NIDENT) {
71		die("Cannot read %s: %s", fname, strerror(errno));
72	}
73	rewind(fp);
74	if (e_ident[EI_CLASS] == ELFCLASS64)
75		process_64(fp, use_real_mode, as_text,
76			   show_absolute_syms, show_absolute_relocs,
77			   show_reloc_info);
78	else
79		process_32(fp, use_real_mode, as_text,
80			   show_absolute_syms, show_absolute_relocs,
81			   show_reloc_info);
82	fclose(fp);
83	return 0;
84}