Merge tag 'for-linus-5.17-ofs-1' of git://git.kernel.org/pub/scm/linux/kernel/git...
[platform/kernel/linux-starfive.git] / arch / x86 / tools / relocs_common.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include "relocs.h"
3
4 void die(char *fmt, ...)
5 {
6         va_list ap;
7         va_start(ap, fmt);
8         vfprintf(stderr, fmt, ap);
9         va_end(ap);
10         exit(1);
11 }
12
13 static void usage(void)
14 {
15         die("relocs [--abs-syms|--abs-relocs|--reloc-info|--text|--realmode]" \
16             " vmlinux\n");
17 }
18
19 int main(int argc, char **argv)
20 {
21         int show_absolute_syms, show_absolute_relocs, show_reloc_info;
22         int as_text, use_real_mode;
23         const char *fname;
24         FILE *fp;
25         int i;
26         unsigned char e_ident[EI_NIDENT];
27
28         show_absolute_syms = 0;
29         show_absolute_relocs = 0;
30         show_reloc_info = 0;
31         as_text = 0;
32         use_real_mode = 0;
33         fname = NULL;
34         for (i = 1; i < argc; i++) {
35                 char *arg = argv[i];
36                 if (*arg == '-') {
37                         if (strcmp(arg, "--abs-syms") == 0) {
38                                 show_absolute_syms = 1;
39                                 continue;
40                         }
41                         if (strcmp(arg, "--abs-relocs") == 0) {
42                                 show_absolute_relocs = 1;
43                                 continue;
44                         }
45                         if (strcmp(arg, "--reloc-info") == 0) {
46                                 show_reloc_info = 1;
47                                 continue;
48                         }
49                         if (strcmp(arg, "--text") == 0) {
50                                 as_text = 1;
51                                 continue;
52                         }
53                         if (strcmp(arg, "--realmode") == 0) {
54                                 use_real_mode = 1;
55                                 continue;
56                         }
57                 }
58                 else if (!fname) {
59                         fname = arg;
60                         continue;
61                 }
62                 usage();
63         }
64         if (!fname) {
65                 usage();
66         }
67         fp = fopen(fname, "r");
68         if (!fp) {
69                 die("Cannot open %s: %s\n", fname, strerror(errno));
70         }
71         if (fread(&e_ident, 1, EI_NIDENT, fp) != EI_NIDENT) {
72                 die("Cannot read %s: %s", fname, strerror(errno));
73         }
74         rewind(fp);
75         if (e_ident[EI_CLASS] == ELFCLASS64)
76                 process_64(fp, use_real_mode, as_text,
77                            show_absolute_syms, show_absolute_relocs,
78                            show_reloc_info);
79         else
80                 process_32(fp, use_real_mode, as_text,
81                            show_absolute_syms, show_absolute_relocs,
82                            show_reloc_info);
83         fclose(fp);
84         return 0;
85 }