source: rtems-tools/linkers/rtems-addr2line.cpp @ 95abe76

5
Last change on this file since 95abe76 was d8eef0a, checked in by Chris Johns <chrisj@…>, on 05/10/18 at 18:12:27

rtemstoolkit: Add DWARF function support.

Load the functions in each CU.

  • Property mode set to 100644
File size: 7.3 KB
Line 
1/*
2 * Copyright (c) 2018, Chris Johns <chrisj@rtems.org>
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16/**
17 * @file
18 *
19 * @ingroup rtems_rld
20 *
21 * @brief RTEMS Address to Line is a version of the classic addr2line
22 *        utility to test the DWARF info support in the RTEMS Toolkit.
23 *
24 */
25
26#if HAVE_CONFIG_H
27#include "config.h"
28#endif
29
30#include <iomanip>
31#include <iostream>
32
33#include <signal.h>
34#include <stdlib.h>
35#include <string.h>
36#include <unistd.h>
37
38#include <getopt.h>
39
40#include <rld.h>
41#include <rld-dwarf.h>
42#include <rld-files.h>
43#include <rld-rtems.h>
44
45#ifndef HAVE_KILL
46#define kill(p,s) raise(s)
47#endif
48
49/**
50 * RTEMS Symbols options.
51 */
52static struct option rld_opts[] = {
53  { "help",         no_argument,            NULL,           'h' },
54  { "version",      no_argument,            NULL,           'V' },
55  { "verbose",      no_argument,            NULL,           'v' },
56  { "executable",   required_argument,      NULL,           'e' },
57  { "functions" ,   no_argument,            NULL,           'f' },
58  { "addresses",    no_argument,            NULL,           'a' },
59  { "pretty-print", no_argument,            NULL,           'p' },
60  { "basenames",    no_argument,            NULL,           's' },
61  { NULL,           0,                      NULL,            0 }
62};
63
64void
65usage (int exit_code)
66{
67  std::cout << "rtems-addr2line [options] addresses" << std::endl
68            << "Options and arguments:" << std::endl
69            << " -h        : help (also --help)" << std::endl
70            << " -V        : print version number and exit (also --version)" << std::endl
71            << " -v        : verbose (trace import parts), can supply multiple times" << std::endl
72            << "             to increase verbosity (also --verbose)" << std::endl
73            << " -e        : executable (also --executable)" << std::endl
74            << " -f        : show function names (also --functions)" << std::endl
75            << " -a        : show addresses (also --addresses)" << std::endl
76            << " -p        : human readable format (also --pretty-print)" << std::endl
77            << " -s        : Strip directory paths (also --basenames)" << std::endl;
78  ::exit (exit_code);
79}
80
81static void
82fatal_signal (int signum)
83{
84  signal (signum, SIG_DFL);
85
86  /*
87   * Get the same signal again, this time not handled, so its normal effect
88   * occurs.
89   */
90  kill (getpid (), signum);
91}
92
93static void
94setup_signals (void)
95{
96  if (signal (SIGINT, SIG_IGN) != SIG_IGN)
97    signal (SIGINT, fatal_signal);
98#ifdef SIGHUP
99  if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
100    signal (SIGHUP, fatal_signal);
101#endif
102  if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
103    signal (SIGTERM, fatal_signal);
104#ifdef SIGPIPE
105  if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
106    signal (SIGPIPE, fatal_signal);
107#endif
108#ifdef SIGCHLD
109  signal (SIGCHLD, SIG_DFL);
110#endif
111}
112
113void
114unhandled_exception (void)
115{
116  std::cerr << "error: exception handling error, please report" << std::endl;
117  exit (13);
118}
119
120int
121main (int argc, char* argv[])
122{
123  int ec = 0;
124
125  setup_signals ();
126
127  std::set_terminate(unhandled_exception);
128
129  try
130  {
131    std::string exe_name = "a.out";
132    bool        show_functions = false;
133    bool        show_addresses = false;
134    bool        pretty_print = false;
135    bool        show_basenames = false;
136
137    rld::set_cmdline (argc, argv);
138
139    while (true)
140    {
141      int opt = ::getopt_long (argc, argv, "hvVe:faps", rld_opts, NULL);
142      if (opt < 0)
143        break;
144
145      switch (opt)
146      {
147        case 'V':
148          std::cout << "rtems-addr2line (RTEMS Address To Line) " << rld::version ()
149                    << ", RTEMS revision " << rld::rtems::version ()
150                    << std::endl;
151          ::exit (0);
152          break;
153
154        case 'v':
155          rld::verbose_inc ();
156          break;
157
158        case 'e':
159          exe_name = optarg;
160          break;
161
162        case 'f':
163          show_functions = true;
164          break;
165
166        case 'a':
167          show_addresses = true;
168          break;
169
170        case 'p':
171          pretty_print = true;
172          break;
173
174        case 's':
175          show_basenames = true;
176          break;
177
178        case '?':
179          usage (3);
180          break;
181
182        case 'h':
183          usage (0);
184          break;
185      }
186    }
187
188    /*
189     * Set the program name.
190     */
191    rld::set_progname (argv[0]);
192
193    argc -= optind;
194    argv += optind;
195
196    if (rld::verbose ())
197      std::cout << "RTEMS Address To Line " << rld::version () << std::endl;
198
199    /*
200     * If there are no object files there is nothing to link.
201     */
202    if (argc == 0)
203      throw rld::error ("no addresses provided", "options");
204
205    if (rld::verbose ())
206      std::cout << "exe: " << exe_name << std::endl;
207
208    /*
209     * Load the executable's debug info.
210     */
211    rld::files::object exe (exe_name);
212    rld::dwarf::file   debug;
213
214    try
215    {
216      /*
217       * Load the executable's ELF file debug info.
218       */
219      exe.open ();
220      exe.begin ();
221      debug.begin (exe.elf ());
222      debug.load_debug ();
223      debug.load_types ();
224      debug.load_functions ();
225
226      for (int arg = 0; arg < argc; ++arg)
227      {
228        rld::dwarf::dwarf_address location;
229
230        if (rld::verbose ())
231          std::cout << "address: " << argv[arg] << std::endl;
232
233        /*
234         * Use the C routine as C++ does not have a way to automatically handle
235         * different bases on the input.
236         */
237        location = ::strtoul (argv[arg], 0, 0);
238
239        std::string path;
240        int         line;
241
242        debug.get_source (location, path, line);
243
244        if (show_addresses)
245        {
246          std::cout << std::hex << std::setfill ('0')
247                    << "0x" << location
248                    << std::dec << std::setfill (' ');
249
250          if (pretty_print)
251            std::cout << ": ";
252          else
253            std::cout << std::endl;
254        }
255
256        if (show_functions)
257        {
258          std::string function;
259          debug.get_function (location, function);
260          std::cout << function << " at ";
261        }
262
263        if (show_basenames)
264          std::cout << rld::path::basename (path);
265        else
266          std::cout << path;
267
268        std::cout << ':' << line << std::endl;
269      }
270
271      debug.end ();
272      exe.end ();
273      exe.close ();
274    }
275    catch (...)
276    {
277      debug.end ();
278      exe.end ();
279      exe.close ();
280      throw;
281    }
282  }
283  catch (rld::error re)
284  {
285    std::cerr << "error: "
286              << re.where << ": " << re.what
287              << std::endl;
288    ec = 10;
289  }
290  catch (std::exception e)
291  {
292    rld::output_std_exception (e, std::cerr);
293    ec = 11;
294  }
295  catch (...)
296  {
297    /*
298     * Helps to know if this happens.
299     */
300    std::cout << "error: unhandled exception" << std::endl;
301    ec = 12;
302  }
303
304  return ec;
305}
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