LXR linux/arch/x86/tools/relocs

   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|--text|--realmode] vmlinux\n");
  15}
  16
  17int main(int argc, char **argv)
  18{
  19        int show_absolute_syms, show_absolute_relocs;
  20        int as_text, use_real_mode;
  21        const char *fname;
  22        FILE *fp;
  23        int i;
  24        unsigned char e_ident[EI_NIDENT];
  25
  26        show_absolute_syms = 0;
  27        show_absolute_relocs = 0;
  28        as_text = 0;
  29        use_real_mode = 0;
  30        fname = NULL;
  31        for (i = 1; i < argc; i++) {
  32                char *arg = argv[i];
  33                if (*arg == '-') {
  34                        if (strcmp(arg, "--abs-syms") == 0) {
  35                                show_absolute_syms = 1;
  36                                continue;
  37                        }
  38                        if (strcmp(arg, "--abs-relocs") == 0) {
  39                                show_absolute_relocs = 1;
  40                                continue;
  41                        }
  42                        if (strcmp(arg, "--text") == 0) {
  43                                as_text = 1;
  44                                continue;
  45                        }
  46                        if (strcmp(arg, "--realmode") == 0) {
  47                                use_real_mode = 1;
  48                                continue;
  49                        }
  50                }
  51                else if (!fname) {
  52                        fname = arg;
  53                        continue;
  54                }
  55                usage();
  56        }
  57        if (!fname) {
  58                usage();
  59        }
  60        fp = fopen(fname, "r");
  61        if (!fp) {
  62                die("Cannot open %s: %s\n", fname, strerror(errno));
  63        }
  64        if (fread(&e_ident, 1, EI_NIDENT, fp) != EI_NIDENT) {
  65                die("Cannot read %s: %s", fname, strerror(errno));
  66        }
  67        rewind(fp);
  68        if (e_ident[EI_CLASS] == ELFCLASS64)
  69                process_64(fp, use_real_mode, as_text,
  70                           show_absolute_syms, show_absolute_relocs);
  71        else
  72                process_32(fp, use_real_mode, as_text,
  73                           show_absolute_syms, show_absolute_relocs);
  74        fclose(fp);
  75        return 0;
  76}
  77