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// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <stdint.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <endian.h>
#include <elf.h>
#include "relocs.h"
void die(char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
exit(1);
}
static void usage(void)
{
die("relocs [--reloc-info|--text|--bin|--keep] vmlinux\n");
}
int main(int argc, char **argv)
{
int show_reloc_info, as_text, as_bin, keep_relocs;
const char *fname;
FILE *fp;
int i;
unsigned char e_ident[EI_NIDENT];
show_reloc_info = 0;
as_text = 0;
as_bin = 0;
keep_relocs = 0;
fname = NULL;
for (i = 1; i < argc; i++) {
char *arg = argv[i];
if (*arg == '-') {
if (strcmp(arg, "--reloc-info") == 0) {
show_reloc_info = 1;
continue;
}
if (strcmp(arg, "--text") == 0) {
as_text = 1;
continue;
}
if (strcmp(arg, "--bin") == 0) {
as_bin = 1;
continue;
}
if (strcmp(arg, "--keep") == 0) {
keep_relocs = 1;
continue;
}
} else if (!fname) {
fname = arg;
continue;
}
usage();
}
if (!fname)
usage();
fp = fopen(fname, "r+");
if (!fp)
die("Cannot open %s: %s\n", fname, strerror(errno));
if (fread(&e_ident, 1, EI_NIDENT, fp) != EI_NIDENT)
die("Cannot read %s: %s", fname, strerror(errno));
rewind(fp);
if (e_ident[EI_CLASS] == ELFCLASS64)
process_64(fp, as_text, as_bin, show_reloc_info, keep_relocs);
else
process_32(fp, as_text, as_bin, show_reloc_info, keep_relocs);
fclose(fp);
return 0;
}
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