The Tor Browser: comparison toolkit/crashreporter/google-breakpad/src/common/dwarf_line_to

--1:000000000000
+:66f03fed5ee0
+// Copyright (c) 2010 Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+// dwarf_line_to_module.cc: Implementation of DwarfLineToModule class.
+// See dwarf_line_to_module.h for details.
+#include <string>
+#include "common/dwarf_line_to_module.h"
+#include "common/using_std_string.h"
+#include "common/logging.h"
+// Trying to support Windows paths in a reasonable way adds a lot of
+// variations to test; it would be better to just put off dealing with
+// it until we actually have to deal with DWARF on Windows.
+// Return true if PATH is an absolute path, false if it is relative.
+static bool PathIsAbsolute(const string &path) {
+return (path.size() >= 1 && path[0] == '/');
+}
+static bool HasTrailingSlash(const string &path) {
+return (path.size() >= 1 && path[path.size() - 1] == '/');
+}
+// If PATH is an absolute path, return PATH.  If PATH is a relative path,
+// treat it as relative to BASE and return the combined path.
+static string ExpandPath(const string &path,
+const string &base) {
+if (PathIsAbsolute(path) || base.empty())
+return path;
+return base + (HasTrailingSlash(base) ? "" : "/") + path;
+}
+namespace google_breakpad {
+void DwarfLineToModule::DefineDir(const string &name, uint32 dir_num) {
+// Directory number zero is reserved to mean the compilation
+// directory. Silently ignore attempts to redefine it.
+if (dir_num != 0)
+directories_[dir_num] = ExpandPath(name, compilation_dir_);
+}
+void DwarfLineToModule::DefineFile(const string &name, int32 file_num,
+uint32 dir_num, uint64 mod_time,
+uint64 length) {
+if (file_num == -1)
+file_num = ++highest_file_number_;
+else if (file_num > highest_file_number_)
+highest_file_number_ = file_num;
+string dir_name;
+if (dir_num == 0) {
+// Directory number zero is the compilation directory, and is stored as
+// an attribute on the compilation unit, rather than in the program table.
+dir_name = compilation_dir_;
+} else {
+DirectoryTable::const_iterator directory_it = directories_.find(dir_num);
+if (directory_it != directories_.end()) {
+dir_name = directory_it->second;
+} else {
+if (!warned_bad_directory_number_) {
+BPLOG(INFO) << "warning: DWARF line number data refers to undefined"
+<< " directory numbers";
+warned_bad_directory_number_ = true;
+}
+}
+}
+string full_name = ExpandPath(name, dir_name);
+// Find a Module::File object of the given name, and add it to the
+// file table.
+files_[file_num] = module_->FindFile(full_name);
+}
+void DwarfLineToModule::AddLine(uint64 address, uint64 length,
+uint32 file_num, uint32 line_num,
+uint32 column_num) {
+if (length == 0)
+return;
+// Clip lines not to extend beyond the end of the address space.
+if (address + length < address)
+length = -address;
+// Should we omit this line? (See the comments for omitted_line_end_.)
+if (address == 0 || address == omitted_line_end_) {
+omitted_line_end_ = address + length;
+return;
+} else {
+omitted_line_end_ = 0;
+}
+// Find the source file being referred to.
+Module::File *file = files_[file_num];
+if (!file) {
+if (!warned_bad_file_number_) {
+BPLOG(INFO) << "warning: DWARF line number data refers to "
+<< "undefined file numbers";
+warned_bad_file_number_ = true;
+}
+return;
+}
+Module::Line line;
+line.address = address;
+// We set the size when we get the next line or the EndSequence call.
+line.size = length;
+line.file = file;
+line.number = line_num;
+lines_->push_back(line);
+}
+} // namespace google_breakpad

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comparison: toolkit/crashreporter/google-breakpad/src/common/dwarf_line_to_module.cc

toolkit/crashreporter/google-breakpad/src/common/dwarf_line_to_module.cc