зеркало из https://github.com/mozilla/pjs.git
130 строки
3.4 KiB
C++
130 строки
3.4 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is ``mapaddrs''
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corp. Portions created by the Initial Developer are
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* Copyright (C) 2001 the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Chris Waterson <waterson@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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A program that reverse-maps a binary stream of address references to
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function names.
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*/
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#include <fstream>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include "elf_symbol_table.h"
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#define _GNU_SOURCE
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#include <getopt.h>
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static int
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map_addrs(int fd, elf_symbol_table &table)
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{
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// Read the binary addresses from stdin.
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unsigned int buf[128];
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ssize_t cb;
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while ((cb = read(fd, buf, sizeof buf)) > 0) {
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if (cb % sizeof buf[0])
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fprintf(stderr, "unaligned read\n");
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unsigned int *addr = buf;
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unsigned int *limit = buf + (cb / 4);
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for (; addr < limit; ++addr) {
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const Elf32_Sym *sym = table.lookup(*addr);
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if (sym)
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cout << table.get_symbol_name(sym) << endl;
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}
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}
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return 0;
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}
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static struct option long_options[] = {
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{ "exe", required_argument, 0, 'e' },
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{ 0, 0, 0, 0 }
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};
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static void
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usage()
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{
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cerr << "usage: mapaddrs --exe=exe file ..." << endl;
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}
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int
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main(int argc, char *argv[])
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{
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elf_symbol_table table;
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while (1) {
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int option_index = 0;
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int c = getopt_long(argc, argv, "e:", long_options, &option_index);
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if (c < 0)
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break;
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switch (c) {
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case 'e':
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table.init(optarg);
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break;
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default:
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usage();
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return 1;
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}
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}
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if (optind >= argc) {
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map_addrs(STDIN_FILENO, table);
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}
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else {
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do {
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int fd = open(argv[optind], O_RDONLY);
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if (fd < 0) {
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perror(argv[optind]);
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return 1;
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}
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map_addrs(fd, table);
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close(fd);
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} while (++optind < argc);
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}
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return 0;
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}
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