| // Copyright (c) 2012 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. |
| |
| // Implementation of StackFrameSymbolizer, which encapsulates the logic of how |
| // SourceLineResolverInterface interacts with SymbolSupplier to fill source |
| // line information in a stack frame, and also looks up WindowsFrameInfo or |
| // CFIFrameInfo for a stack frame. |
| |
| #include "google_breakpad/processor/stack_frame_symbolizer.h" |
| |
| #include <assert.h> |
| |
| #include "common/scoped_ptr.h" |
| #include "google_breakpad/processor/code_module.h" |
| #include "google_breakpad/processor/code_modules.h" |
| #include "google_breakpad/processor/source_line_resolver_interface.h" |
| #include "google_breakpad/processor/stack_frame.h" |
| #include "google_breakpad/processor/symbol_supplier.h" |
| #include "google_breakpad/processor/system_info.h" |
| #include "processor/linked_ptr.h" |
| #include "processor/logging.h" |
| |
| namespace google_breakpad { |
| |
| StackFrameSymbolizer::StackFrameSymbolizer( |
| SymbolSupplier* supplier, |
| SourceLineResolverInterface* resolver) : supplier_(supplier), |
| resolver_(resolver) { } |
| |
| StackFrameSymbolizer::SymbolizerResult StackFrameSymbolizer::FillSourceLineInfo( |
| const CodeModules* modules, |
| const SystemInfo* system_info, |
| StackFrame* frame) { |
| assert(frame); |
| |
| if (!modules) return kError; |
| const CodeModule* module = modules->GetModuleForAddress(frame->instruction); |
| if (!module) return kError; |
| frame->module = module; |
| |
| if (!resolver_) return kError; // no resolver. |
| // If module is known to have missing symbol file, return. |
| if (no_symbol_modules_.find(module->code_file()) != |
| no_symbol_modules_.end()) { |
| return kError; |
| } |
| |
| // If module is already loaded, go ahead to fill source line info and return. |
| if (resolver_->HasModule(frame->module)) { |
| resolver_->FillSourceLineInfo(frame); |
| return resolver_->IsModuleCorrupt(frame->module) ? |
| kWarningCorruptSymbols : kNoError; |
| } |
| |
| // Module needs to fetch symbol file. First check to see if supplier exists. |
| if (!supplier_) { |
| return kError; |
| } |
| |
| // Start fetching symbol from supplier. |
| string symbol_file; |
| char* symbol_data = NULL; |
| size_t symbol_data_size; |
| SymbolSupplier::SymbolResult symbol_result = supplier_->GetCStringSymbolData( |
| module, system_info, &symbol_file, &symbol_data, &symbol_data_size); |
| |
| switch (symbol_result) { |
| case SymbolSupplier::FOUND: { |
| bool load_success = resolver_->LoadModuleUsingMemoryBuffer( |
| frame->module, |
| symbol_data, |
| symbol_data_size); |
| if (resolver_->ShouldDeleteMemoryBufferAfterLoadModule()) { |
| supplier_->FreeSymbolData(module); |
| } |
| |
| if (load_success) { |
| resolver_->FillSourceLineInfo(frame); |
| return resolver_->IsModuleCorrupt(frame->module) ? |
| kWarningCorruptSymbols : kNoError; |
| } else { |
| BPLOG(ERROR) << "Failed to load symbol file in resolver."; |
| no_symbol_modules_.insert(module->code_file()); |
| return kError; |
| } |
| } |
| |
| case SymbolSupplier::NOT_FOUND: |
| no_symbol_modules_.insert(module->code_file()); |
| return kError; |
| |
| case SymbolSupplier::INTERRUPT: |
| return kInterrupt; |
| |
| default: |
| BPLOG(ERROR) << "Unknown SymbolResult enum: " << symbol_result; |
| return kError; |
| } |
| return kError; |
| } |
| |
| WindowsFrameInfo* StackFrameSymbolizer::FindWindowsFrameInfo( |
| const StackFrame* frame) { |
| return resolver_ ? resolver_->FindWindowsFrameInfo(frame) : NULL; |
| } |
| |
| CFIFrameInfo* StackFrameSymbolizer::FindCFIFrameInfo( |
| const StackFrame* frame) { |
| return resolver_ ? resolver_->FindCFIFrameInfo(frame) : NULL; |
| } |
| |
| } // namespace google_breakpad |