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

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+:734442c4f551
+// -*- mode: c++ -*-
+// Copyright (c) 2011, 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.
+// Author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+// dump_syms.h: Declaration of google_breakpad::DumpSymbols, a class for
+// reading debugging information from Mach-O files and writing it out as a
+// Breakpad symbol file.
+#include <Foundation/Foundation.h>
+#include <mach-o/loader.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ostream>
+#include <string>
+#include <vector>
+#include "common/byte_cursor.h"
+#include "common/mac/macho_reader.h"
+#include "common/module.h"
+#include "common/symbol_data.h"
+namespace google_breakpad {
+class DumpSymbols {
+public:
+explicit DumpSymbols(SymbolData symbol_data)
+: symbol_data_(symbol_data),
+input_pathname_(),
+object_filename_(),
+contents_(),
+selected_object_file_(),
+selected_object_name_() { }
+~DumpSymbols() {
+[input_pathname_ release];
+[object_filename_ release];
+[contents_ release];
+}
+// Prepare to read debugging information from |filename|. |filename| may be
+// the name of a universal binary, a Mach-O file, or a dSYM bundle
+// containing either of the above. On success, return true; if there is a
+// problem reading |filename|, report it and return false.
+//
+// (This class uses NSString for filenames and related values,
+// because the Mac Foundation framework seems to support
+// filename-related operations more fully on NSString values.)
+bool Read(NSString *filename);
+// If this dumper's file includes an object file for |cpu_type| and
+// |cpu_subtype|, then select that object file for dumping, and return
+// true. Otherwise, return false, and leave this dumper's selected
+// architecture unchanged.
+//
+// By default, if this dumper's file contains only one object file, then
+// the dumper will dump those symbols; and if it contains more than one
+// object file, then the dumper will dump the object file whose
+// architecture matches that of this dumper program.
+bool SetArchitecture(cpu_type_t cpu_type, cpu_subtype_t cpu_subtype);
+// If this dumper's file includes an object file for |arch_name|, then select
+// that object file for dumping, and return true. Otherwise, return false,
+// and leave this dumper's selected architecture unchanged.
+//
+// By default, if this dumper's file contains only one object file, then
+// the dumper will dump those symbols; and if it contains more than one
+// object file, then the dumper will dump the object file whose
+// architecture matches that of this dumper program.
+bool SetArchitecture(const std::string &arch_name);
+// Return a pointer to an array of 'struct fat_arch' structures,
+// describing the object files contained in this dumper's file. Set
+// *|count| to the number of elements in the array. The returned array is
+// owned by this DumpSymbols instance.
+//
+// If there are no available architectures, this function
+// may return NULL.
+const struct fat_arch *AvailableArchitectures(size_t *count) {
+*count = object_files_.size();
+if (object_files_.size() > 0)
+return &object_files_[0];
+return NULL;
+}
+// Read the selected object file's debugging information, and write it out to
+// |stream|. Return true on success; if an error occurs, report it and
+// return false.
+bool WriteSymbolFile(std::ostream &stream);
+// As above, but simply return the debugging information in module
+// instead of writing it to a stream. The caller owns the resulting
+// module object and must delete it when finished.
+bool ReadSymbolData(Module** module);
+private:
+// Used internally.
+class DumperLineToModule;
+class LoadCommandDumper;
+// Return an identifier string for the file this DumpSymbols is dumping.
+std::string Identifier();
+// Read debugging information from |dwarf_sections|, which was taken from
+// |macho_reader|, and add it to |module|. On success, return true;
+// on failure, report the problem and return false.
+bool ReadDwarf(google_breakpad::Module *module,
+const mach_o::Reader &macho_reader,
+const mach_o::SectionMap &dwarf_sections) const;
+// Read DWARF CFI or .eh_frame data from |section|, belonging to
+// |macho_reader|, and record it in |module|.  If |eh_frame| is true,
+// then the data is .eh_frame-format data; otherwise, it is standard DWARF
+// .debug_frame data. On success, return true; on failure, report
+// the problem and return false.
+bool ReadCFI(google_breakpad::Module *module,
+const mach_o::Reader &macho_reader,
+const mach_o::Section &section,
+bool eh_frame) const;
+// The selection of what type of symbol data to read/write.
+const SymbolData symbol_data_;
+// The name of the file or bundle whose symbols this will dump.
+// This is the path given to Read, for use in error messages.
+NSString *input_pathname_;
+// The name of the file this DumpSymbols will actually read debugging
+// information from. Normally, this is the same as input_pathname_, but if
+// filename refers to a dSYM bundle, then this is the resource file
+// within that bundle.
+NSString *object_filename_;
+// The complete contents of object_filename_, mapped into memory.
+NSData *contents_;
+// A vector of fat_arch structures describing the object files
+// object_filename_ contains. If object_filename_ refers to a fat binary,
+// this may have more than one element; if it refers to a Mach-O file, this
+// has exactly one element.
+vector<struct fat_arch> object_files_;
+// The object file in object_files_ selected to dump, or NULL if
+// SetArchitecture hasn't been called yet.
+const struct fat_arch *selected_object_file_;
+// A string that identifies the selected object file, for use in error
+// messages.  This is usually object_filename_, but if that refers to a
+// fat binary, it includes an indication of the particular architecture
+// within that binary.
+string selected_object_name_;
+};
+}  // namespace google_breakpad

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comparison: toolkit/crashreporter/google-breakpad/src/common/mac/dump_syms.h

toolkit/crashreporter/google-breakpad/src/common/mac/dump_syms.h