* Added breakpad support for Linux.

thirdparty/breakpad/common/mac/dump_syms.h

@@ -0,0 +1,172 @@
+// -*- mode: c++ -*-
+
+// 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.
+
+// 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"
+
+namespace google_breakpad {
+
+class DumpSymbols {
+ public:
+  DumpSymbols() 
+      : 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);
+
+ 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 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