1    :  // Copyright 2012 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/grinder/grinder_util.h"
  16    :  
  17    :  #include "base/files/file_util.h"
  18    :  #include "mnemonics.h"  // NOLINT
  19    :  #include "syzygy/common/defs.h"
  20    :  #include "syzygy/common/indexed_frequency_data.h"
  21    :  #include "syzygy/core/disassembler_util.h"
  22    :  #include "syzygy/pdb/omap.h"
  23    :  #include "syzygy/pdb/pdb_file.h"
  24    :  #include "syzygy/pdb/pdb_reader.h"
  25    :  #include "syzygy/pdb/pdb_util.h"
  26    :  
  27    :  namespace grinder {
  28    :  
  29    :  bool GetBasicBlockAddresses(const base::FilePath& pdb_path,
  30  E :                              RelativeAddressVector* bb_addresses) {
  31  E :    DCHECK(bb_addresses != NULL);
  32    :  
  33  E :    pdb::PdbFile pdb_file;
  34  E :    pdb::PdbReader pdb_reader;
  35  E :    if (!pdb_reader.Read(pdb_path, &pdb_file)) {
  36  i :      LOG(ERROR) << "Failed to read PDB file: " << pdb_path.value();
  37  i :      return false;
  38    :    }
  39    :  
  40  E :    pdb::PdbInfoHeader70 pdb_header = {};
  41  E :    pdb::NameStreamMap name_stream_map;
  42  E :    if (!pdb::ReadHeaderInfoStream(pdb_file, &pdb_header, &name_stream_map)) {
  43  i :      LOG(ERROR) << "Failed to read PDB header info stream for PDB file: "
  44    :                 << pdb_path.value();
  45  i :      return false;
  46    :    }
  47    :  
  48    :    pdb::NameStreamMap::const_iterator stream_id_it =
  49  E :        name_stream_map.find(common::kBasicBlockRangesStreamName);
  50  E :    if (stream_id_it == name_stream_map.end()) {
  51  i :      LOG(ERROR) << "Failed to find stream \""
  52    :                 << common::kBasicBlockRangesStreamName << "\" in PDB file: "
  53    :                 << pdb_path.value();
  54  i :      return false;
  55    :    }
  56    :  
  57    :    scoped_refptr<pdb::PdbStream> stream =
  58  E :        pdb_file.GetStream(stream_id_it->second);
  59  E :    if (stream.get() == NULL) {
  60  i :      LOG(ERROR) << "No stream with id " << stream_id_it->second
  61    :                 << " in PDB file: " << pdb_path.value();
  62  i :      return false;
  63    :    }
  64    :  
  65  E :    stream->Seek(0);
  66  E :    bb_addresses->clear();
  67  E :    if (!stream->Read(bb_addresses)) {
  68  i :      LOG(ERROR) << "Failed to parse basic block range stream from PDB file: "
  69    :                 << pdb_path.value();
  70  i :      return false;
  71    :    }
  72    :  
  73  E :    return true;
  74  E :  }
  75    :  
  76    :  }  // namespace grinder