LCOV - app.info - toolkit/crashreporter/google-breakpad/src/common/stabs_to_module.h

LCOV - code coverage report
| Current view: | directory - toolkit/crashreporter/google-breakpad/src/common - stabs_to_module.h (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 2 | 0 | 0.0 %
| Date: | 2012-04-07 | Functions: | 1 | 0 | 0.0 %

           1                 : // -*- mode: C++ -*-
           2                 :
           3                 : // Copyright (c) 2010 Google Inc.
           4                 : // All rights reserved.
           5                 : //
           6                 : // Redistribution and use in source and binary forms, with or without
           7                 : // modification, are permitted provided that the following conditions are
           8                 : // met:
           9                 : //
          10                 : //     * Redistributions of source code must retain the above copyright
          11                 : // notice, this list of conditions and the following disclaimer.
          12                 : //     * Redistributions in binary form must reproduce the above
          13                 : // copyright notice, this list of conditions and the following disclaimer
          14                 : // in the documentation and/or other materials provided with the
          15                 : // distribution.
          16                 : //     * Neither the name of Google Inc. nor the names of its
          17                 : // contributors may be used to endorse or promote products derived from
          18                 : // this software without specific prior written permission.
          19                 : //
          20                 : // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
          21                 : // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
          22                 : // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
          23                 : // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
          24                 : // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
          25                 : // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
          26                 : // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
          27                 : // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
          28                 : // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
          29                 : // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
          30                 : // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
          31                 :
          32                 : // Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
          33                 :
          34                 : // dump_stabs.h: Define the StabsToModule class, which receives
          35                 : // STABS debugging information from a parser and adds it to a Breakpad
          36                 : // symbol file.
          37                 :
          38                 : #ifndef COMMON_LINUX_DUMP_STABS_H__
          39                 : #define COMMON_LINUX_DUMP_STABS_H__
          40                 :
          41                 : #include <stdint.h>
          42                 :
          43                 : #include <string>
          44                 : #include <vector>
          45                 :
          46                 : #include "common/module.h"
          47                 : #include "common/stabs_reader.h"
          48                 :
          49                 : namespace google_breakpad {
          50                 :
          51                 : using std::string;
          52                 : using std::vector;
          53                 :
          54                 : // A StabsToModule is a handler that receives parsed STABS
          55                 : // debugging information from a StabsReader, and uses that to populate
          56                 : // a Module. (All classes are in the google_breakpad namespace.) A
          57                 : // Module represents the contents of a Breakpad symbol file, and knows
          58                 : // how to write itself out as such. A StabsToModule thus acts as
          59                 : // the bridge between STABS and Breakpad data.
          60                 : class StabsToModule: public google_breakpad::StabsHandler {
          61                 :  public:
          62                 :   // Receive parsed debugging information from a StabsReader, and
          63                 :   // store it all in MODULE.
          64               0 :   StabsToModule(Module *module) :
          65                 :       module_(module),
          66                 :       in_compilation_unit_(false),
          67                 :       comp_unit_base_address_(0),
          68                 :       current_function_(NULL),
          69                 :       current_source_file_(NULL),
          70               0 :       current_source_file_name_(NULL) { }
          71                 :   ~StabsToModule();
          72                 :
          73                 :   // The standard StabsHandler virtual member functions.
          74                 :   bool StartCompilationUnit(const char *name, uint64_t address,
          75                 :                             const char *build_directory);
          76                 :   bool EndCompilationUnit(uint64_t address);
          77                 :   bool StartFunction(const string &name, uint64_t address);
          78                 :   bool EndFunction(uint64_t address);
          79                 :   bool Line(uint64_t address, const char *name, int number);
          80                 :   void Warning(const char *format, ...);
          81                 :
          82                 :   // Do any final processing necessary to make module_ contain all the
          83                 :   // data provided by the STABS reader.
          84                 :   //
          85                 :   // Because STABS does not provide reliable size information for
          86                 :   // functions and lines, we need to make a pass over the data after
          87                 :   // processing all the STABS to compute those sizes.  We take care of
          88                 :   // that here.
          89                 :   void Finalize();
          90                 :
          91                 :  private:
          92                 :
          93                 :   // An arbitrary, but very large, size to use for functions whose
          94                 :   // size we can't compute properly.
          95                 :   static const uint64_t kFallbackSize = 0x10000000;
          96                 :
          97                 :   // The module we're contributing debugging info to.
          98                 :   Module *module_;
          99                 :
         100                 :   // The functions we've generated so far.  We don't add these to
         101                 :   // module_ as we parse them.  Instead, we wait until we've computed
         102                 :   // their ending address, and their lines' ending addresses.
         103                 :   //
         104                 :   // We could just stick them in module_ from the outset, but if
         105                 :   // module_ already contains data gathered from other debugging
         106                 :   // formats, that would complicate the size computation.
         107                 :   vector<Module::Function *> functions_;
         108                 :
         109                 :   // Boundary addresses.  STABS doesn't necessarily supply sizes for
         110                 :   // functions and lines, so we need to compute them ourselves by
         111                 :   // finding the next object.
         112                 :   vector<Module::Address> boundaries_;
         113                 :
         114                 :   // True if we are currently within a compilation unit: we have gotten a
         115                 :   // StartCompilationUnit call, but no matching EndCompilationUnit call
         116                 :   // yet. We use this for sanity checks.
         117                 :   bool in_compilation_unit_;
         118                 :
         119                 :   // The base address of the current compilation unit.  We use this to
         120                 :   // recognize functions we should omit from the symbol file.  (If you
         121                 :   // know the details of why we omit these, please patch this
         122                 :   // comment.)
         123                 :   Module::Address comp_unit_base_address_;
         124                 :
         125                 :   // The function we're currently contributing lines to.
         126                 :   Module::Function *current_function_;
         127                 :
         128                 :   // The last Module::File we got a line number in.
         129                 :   Module::File *current_source_file_;
         130                 :
         131                 :   // The pointer in the .stabstr section of the name that
         132                 :   // current_source_file_ is built from.  This allows us to quickly
         133                 :   // recognize when the current line is in the same file as the
         134                 :   // previous one (which it usually is).
         135                 :   const char *current_source_file_name_;
         136                 : };
         137                 :
         138                 : } // namespace google_breakpad
         139                 :
         140                 : #endif // COMMON_LINUX_DUMP_STABS_H__

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