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