1// Copyright (c) 2011, Google Inc.
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met:
7//
8//     * Redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer.
10//     * Redistributions in binary form must reproduce the above
11// copyright notice, this list of conditions and the following disclaimer
12// in the documentation and/or other materials provided with the
13// distribution.
14//     * Neither the name of Google Inc. nor the names of its
15// contributors may be used to endorse or promote products derived from
16// this software without specific prior written permission.
17//
18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30#include <stdio.h>
31#include <unistd.h>
32
33#include <cstring>
34#include <iostream>
35#include <string>
36#include <vector>
37
38#include "common/linux/dump_symbols.h"
39
40using google_breakpad::WriteSymbolFile;
41
42int usage(const char* self) {
43  fprintf(stderr, "Usage: %s [OPTION] <binary-with-debugging-info> "
44          "[directories-for-debug-file]\n\n", self);
45  fprintf(stderr, "Options:\n");
46  fprintf(stderr, "  -c    Do not generate CFI section\n");
47  fprintf(stderr, "  -r    Do not handle inter-compilation unit references\n");
48  fprintf(stderr, "  -v    Verbose logging. Print all warnings to stderr\n");
49  return 1;
50}
51
52int main(int argc, char **argv) {
53  if (argc < 2)
54    return usage(argv[0]);
55
56  bool cfi = true;
57  bool handle_inter_cu_refs = true;
58  bool log_to_stderr = false;
59  int arg_index = 1;
60  while (arg_index < argc && strlen(argv[arg_index]) > 0 &&
61         argv[arg_index][0] == '-') {
62    if (strcmp("-c", argv[arg_index]) == 0) {
63      cfi = false;
64    } else if (strcmp("-r", argv[arg_index]) == 0) {
65      handle_inter_cu_refs = false;
66    } else if (strcmp("-v", argv[arg_index]) == 0) {
67      log_to_stderr = true;
68    } else {
69      return usage(argv[0]);
70    }
71    ++arg_index;
72  }
73  if (arg_index == argc)
74    return usage(argv[0]);
75
76  // Save stderr so it can be used below.
77  FILE* saved_stderr = fdopen(dup(STDERR_FILENO), "w");
78  if (!log_to_stderr) {
79    freopen("/dev/null", "w", stderr);
80  }
81
82  const char* binary;
83  std::vector<string> debug_dirs;
84  binary = argv[arg_index];
85  for (int debug_dir_index = arg_index + 1;
86       debug_dir_index < argc;
87       ++debug_dir_index) {
88    debug_dirs.push_back(argv[debug_dir_index]);
89  }
90
91  SymbolData symbol_data = cfi ? ALL_SYMBOL_DATA : NO_CFI;
92  google_breakpad::DumpOptions options(symbol_data, handle_inter_cu_refs);
93  if (!WriteSymbolFile(binary, debug_dirs, options, std::cout)) {
94    fprintf(saved_stderr, "Failed to write symbol file.\n");
95    return 1;
96  }
97
98  return 0;
99}
100