gecko-dev/tools/reorder/mapaddrs.cpp

130 строки
3.4 KiB
C++

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