The Tor Browser: toolkit/crashreporter/google-breakpad/src/processor/stack_frame

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 // Copyright (c) 2012 Google Inc.

     2 // All rights reserved.

     3 //

     4 // Redistribution and use in source and binary forms, with or without

     5 // modification, are permitted provided that the following conditions are

     6 // met:

     7 //

     8 //     * Redistributions of source code must retain the above copyright

     9 // notice, this list of conditions and the following disclaimer.

    10 //     * Redistributions in binary form must reproduce the above

    11 // copyright notice, this list of conditions and the following disclaimer

    12 // in the documentation and/or other materials provided with the

    13 // distribution.

    14 //     * Neither the name of Google Inc. nor the names of its

    15 // contributors may be used to endorse or promote products derived from

    16 // this software without specific prior written permission.

    17 //

    18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

    21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

    22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

    24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    30 // Implementation of StackFrameSymbolizer, which encapsulates the logic of how

    31 // SourceLineResolverInterface interacts with SymbolSupplier to fill source

    32 // line information in a stack frame, and also looks up WindowsFrameInfo or

    33 // CFIFrameInfo for a stack frame.

    35 #include "google_breakpad/processor/stack_frame_symbolizer.h"

    37 #include <assert.h>

    39 #include "common/scoped_ptr.h"

    40 #include "google_breakpad/processor/code_module.h"

    41 #include "google_breakpad/processor/code_modules.h"

    42 #include "google_breakpad/processor/source_line_resolver_interface.h"

    43 #include "google_breakpad/processor/stack_frame.h"

    44 #include "google_breakpad/processor/symbol_supplier.h"

    45 #include "google_breakpad/processor/system_info.h"

    46 #include "processor/linked_ptr.h"

    47 #include "common/logging.h"

    49 namespace google_breakpad {

    51 StackFrameSymbolizer::StackFrameSymbolizer(

    52     SymbolSupplier* supplier,

    53     SourceLineResolverInterface* resolver) : supplier_(supplier),

    54                                              resolver_(resolver) { }

    56 StackFrameSymbolizer::SymbolizerResult StackFrameSymbolizer::FillSourceLineInfo(

    57     const CodeModules* modules,

    58     const SystemInfo* system_info,

    59     StackFrame* frame) {

    60   assert(frame);

    62   if (!modules) return kError;

    63   const CodeModule* module = modules->GetModuleForAddress(frame->instruction);

    64   if (!module) return kError;

    65   frame->module = module;

    67   if (!resolver_) return kError;  // no resolver.

    68   // If module is known to have missing symbol file, return.

    69   if (no_symbol_modules_.find(module->code_file()) !=

    70       no_symbol_modules_.end()) {

    71     return kError;

    72   }

    74   // If module is already loaded, go ahead to fill source line info and return.

    75   if (resolver_->HasModule(frame->module)) {

    76     resolver_->FillSourceLineInfo(frame);

    77     return kNoError;

    78   }

    80   // Module needs to fetch symbol file. First check to see if supplier exists.

    81   if (!supplier_) {

    82     return kError;

    83   }

    85   // Start fetching symbol from supplier.

    86   string symbol_file;

    87   char* symbol_data = NULL;

    88   SymbolSupplier::SymbolResult symbol_result = supplier_->GetCStringSymbolData(

    89       module, system_info, &symbol_file, &symbol_data);

    91   switch (symbol_result) {

    92     case SymbolSupplier::FOUND: {

    93       bool load_success = resolver_->LoadModuleUsingMemoryBuffer(frame->module,

    94                                                                  symbol_data);

    95       if (resolver_->ShouldDeleteMemoryBufferAfterLoadModule()) {

    96         supplier_->FreeSymbolData(module);

    97       }

    99       if (load_success) {

   100         resolver_->FillSourceLineInfo(frame);

   101         return kNoError;

   102       } else {

   103         BPLOG(ERROR) << "Failed to load symbol file in resolver.";

   104         no_symbol_modules_.insert(module->code_file());

   105         return kError;

   106       }

   107     }

   109     case SymbolSupplier::NOT_FOUND:

   110       no_symbol_modules_.insert(module->code_file());

   111       return kError;

   113     case SymbolSupplier::INTERRUPT:

   114       return kInterrupt;

   116     default:

   117       BPLOG(ERROR) << "Unknown SymbolResult enum: " << symbol_result;

   118       return kError;

   119   }

   120   return kError;

   121 }

   123 WindowsFrameInfo* StackFrameSymbolizer::FindWindowsFrameInfo(

   124     const StackFrame* frame) {

   125   return resolver_ ? resolver_->FindWindowsFrameInfo(frame) : NULL;

   126 }

   128 CFIFrameInfo* StackFrameSymbolizer::FindCFIFrameInfo(

   129     const StackFrame* frame) {

   130   return resolver_ ? resolver_->FindCFIFrameInfo(frame) : NULL;

   131 }

   133 }  // namespace google_breakpad

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