1    :  // Copyright 2013 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    :  #include "syzygy/instrument/instrumenters/bbentry_instrumenter.h"
  16    :  
  17    :  #include "base/logging.h"
  18    :  #include "base/files/file_util.h"
  19    :  #include "syzygy/application/application.h"
  20    :  #include "syzygy/pe/image_filter.h"
  21    :  
  22    :  namespace instrument {
  23    :  namespace instrumenters {
  24    :  
  25    :  const char BasicBlockEntryInstrumenter::kAgentDllBasicBlockEntry[] =
  26    :      "basic_block_entry_client.dll";
  27    :  
  28    :  BasicBlockEntryInstrumenter::BasicBlockEntryInstrumenter()
  29  E :      : inline_fast_path_(false) {
  30  E :    agent_dll_ = kAgentDllBasicBlockEntry;
  31  E :  }
  32    :  
  33  E :  bool BasicBlockEntryInstrumenter::InstrumentPrepare() {
  34  E :    return true;
  35  E :  }
  36    :  
  37  E :  bool BasicBlockEntryInstrumenter::InstrumentImpl() {
  38    :    bbentry_transform_.reset(
  39  E :        new instrument::transforms::BasicBlockEntryHookTransform());
  40  E :    bbentry_transform_->set_instrument_dll_name(agent_dll_);
  41  E :    bbentry_transform_->set_inline_fast_path(inline_fast_path_);
  42  E :    bbentry_transform_->set_src_ranges_for_thunks(debug_friendly_);
  43  E :    if (!relinker_->AppendTransform(bbentry_transform_.get()))
  44  i :      return false;
  45    :  
  46    :    add_bb_addr_stream_mutator_.reset(new
  47    :        instrument::mutators::AddIndexedDataRangesStreamPdbMutator(
  48    :            bbentry_transform_->bb_ranges(),
  49  E :            common::kBasicBlockRangesStreamName));
  50  E :    if (!relinker_->AppendPdbMutator(add_bb_addr_stream_mutator_.get()))
  51  i :      return false;
  52    :  
  53  E :    return true;
  54  E :  }
  55    :  
  56    :  bool BasicBlockEntryInstrumenter::DoCommandLineParse(
  57  E :      const base::CommandLine* command_line) {
  58  E :    if (!Super::DoCommandLineParse(command_line))
  59  i :      return false;
  60    :  
  61    :    // Parse the additional command line arguments.
  62  E :    inline_fast_path_ = command_line->HasSwitch("inline-fast-path");
  63    :  
  64  E :    return true;
  65  E :  }
  66    :  
  67    :  }  // namespace instrumenters
  68    :  }  // namespace instrument