1    :  // Copyright 2015 Google Inc. All Rights Reserved.
   2    :  //
   3    :  // Licensed under the Apache License, Version 2.0 (the "License");
   4    :  // you may not use this file except in compliance with the License.
   5    :  // You may obtain a copy of the License at
   6    :  //
   7    :  //     http://www.apache.org/licenses/LICENSE-2.0
   8    :  //
   9    :  // Unless required by applicable law or agreed to in writing, software
  10    :  // distributed under the License is distributed on an "AS IS" BASIS,
  11    :  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12    :  // See the License for the specific language governing permissions and
  13    :  // limitations under the License.
  14    :  
  15    :  #ifndef SYZYGY_REFINERY_ANALYZERS_STACK_FRAME_ANALYZER_IMPL_H_
  16    :  #define SYZYGY_REFINERY_ANALYZERS_STACK_FRAME_ANALYZER_IMPL_H_
  17    :  
  18    :  #include <dia2.h>
  19    :  
  20    :  #include "base/macros.h"
  21    :  #include "base/memory/ref_counted.h"
  22    :  #include "syzygy/refinery/process_state/layer_data.h"
  23    :  #include "syzygy/refinery/process_state/process_state.h"
  24    :  #include "syzygy/refinery/process_state/process_state_util.h"
  25    :  #include "syzygy/refinery/types/type_repository.h"
  26    :  
  27  m :  namespace refinery {
  28    :  
  29    :  // A stack frame data analyzer analyzes data in the context of a stack frame and
  30    :  // populates a process state's typed block layer with the findings.
  31    :  // @note Until we move away from using DIA for stack frame symbol information,
  32    :  //     this class also handles joining an IDiaSymbol to a Type via symbol name.
  33  m :  class StackFrameDataAnalyzer {
  34  m :   public:
  35  m :    StackFrameDataAnalyzer(StackFrameRecordPtr frame_record,
  36  m :                           scoped_refptr<TypeNameIndex> typename_index,
  37  m :                           ModuleId module_id,
  38  m :                           ProcessState* process_state);
  39    :  
  40    :    // Analyze @p data in the context of the frame record to populate the process
  41    :    // state's typed block layer.
  42    :    // @pre data is of type SymTagData.
  43    :    // @param data the dia symbol of type SymTagData to analyze.
  44    :    // @returns true on success analysis, false otherwise.
  45    :    // @note Successful analysis does not necessarily mean modifying the process
  46    :    //     state.
  47  m :    bool Analyze(IDiaSymbol* data);
  48    :  
  49  m :   private:
  50  m :    bool GetAddressRange(IDiaSymbol* data, TypePtr type, AddressRange* range);
  51  m :    bool GetAddressRangeRegRel(IDiaSymbol* data,
  52  m :                               TypePtr type,
  53  m :                               AddressRange* range);
  54    :  
  55  m :    StackFrameRecordPtr frame_record_;
  56  m :    scoped_refptr<TypeNameIndex> typename_index_;
  57  m :    ModuleId module_id_;
  58    :    // Not owned. Must outlive the StackFrameDataAnalyzer.
  59  m :    ProcessState* process_state_;
  60    :  
  61  m :    DISALLOW_COPY_AND_ASSIGN(StackFrameDataAnalyzer);
  62  m :  };
  63    :  
  64  m :  }  // namespace refinery
  65    :  
  66    :  #endif  // SYZYGY_REFINERY_ANALYZERS_STACK_FRAME_ANALYZER_IMPL_H_