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

--1:000000000000
+:546faab23131
+// -*- 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.
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+// dump_stabs.h: Define the StabsToModule class, which receives
+// STABS debugging information from a parser and adds it to a Breakpad
+// symbol file.
+#ifndef BREAKPAD_COMMON_STABS_TO_MODULE_H_
+#define BREAKPAD_COMMON_STABS_TO_MODULE_H_
+#include <stdint.h>
+#include <string>
+#include <vector>
+#include "common/module.h"
+#include "common/stabs_reader.h"
+#include "common/using_std_string.h"
+namespace google_breakpad {
+using std::vector;
+// A StabsToModule is a handler that receives parsed STABS debugging
+// information from a StabsReader, and uses that to populate
+// a Module. (All classes are in the google_breakpad namespace.) A
+// Module represents the contents of a Breakpad symbol file, and knows
+// how to write itself out as such. A StabsToModule thus acts as
+// the bridge between STABS and Breakpad data.
+// When processing Darwin Mach-O files, this also receives public linker
+// symbols, like those found in system libraries.
+class StabsToModule: public google_breakpad::StabsHandler {
+public:
+// Receive parsed debugging information from a StabsReader, and
+// store it all in MODULE.
+StabsToModule(Module *module) :
+module_(module),
+in_compilation_unit_(false),
+comp_unit_base_address_(0),
+current_function_(NULL),
+current_source_file_(NULL),
+current_source_file_name_(NULL) { }
+~StabsToModule();
+// The standard StabsHandler virtual member functions.
+bool StartCompilationUnit(const char *name, uint64_t address,
+const char *build_directory);
+bool EndCompilationUnit(uint64_t address);
+bool StartFunction(const string &name, uint64_t address);
+bool EndFunction(uint64_t address);
+bool Line(uint64_t address, const char *name, int number);
+bool Extern(const string &name, uint64_t address);
+void Warning(const char *format, ...);
+// Do any final processing necessary to make module_ contain all the
+// data provided by the STABS reader.
+//
+// Because STABS does not provide reliable size information for
+// functions and lines, we need to make a pass over the data after
+// processing all the STABS to compute those sizes.  We take care of
+// that here.
+void Finalize();
+private:
+// An arbitrary, but very large, size to use for functions whose
+// size we can't compute properly.
+static const uint64_t kFallbackSize = 0x10000000;
+// The module we're contributing debugging info to.
+Module *module_;
+// The functions we've generated so far.  We don't add these to
+// module_ as we parse them.  Instead, we wait until we've computed
+// their ending address, and their lines' ending addresses.
+//
+// We could just stick them in module_ from the outset, but if
+// module_ already contains data gathered from other debugging
+// formats, that would complicate the size computation.
+vector<Module::Function *> functions_;
+// Boundary addresses.  STABS doesn't necessarily supply sizes for
+// functions and lines, so we need to compute them ourselves by
+// finding the next object.
+vector<Module::Address> boundaries_;
+// True if we are currently within a compilation unit: we have gotten a
+// StartCompilationUnit call, but no matching EndCompilationUnit call
+// yet. We use this for sanity checks.
+bool in_compilation_unit_;
+// The base address of the current compilation unit.  We use this to
+// recognize functions we should omit from the symbol file.  (If you
+// know the details of why we omit these, please patch this
+// comment.)
+Module::Address comp_unit_base_address_;
+// The function we're currently contributing lines to.
+Module::Function *current_function_;
+// The last Module::File we got a line number in.
+Module::File *current_source_file_;
+// The pointer in the .stabstr section of the name that
+// current_source_file_ is built from.  This allows us to quickly
+// recognize when the current line is in the same file as the
+// previous one (which it usually is).
+const char *current_source_file_name_;
+};
+}  // namespace google_breakpad
+#endif  // BREAKPAD_COMMON_STABS_TO_MODULE_H_

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

toolkit/crashreporter/google-breakpad/src/common/stabs_to_module.h