1    :  // Copyright 2011 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/pdb/pdb_data.h"
  16    :  
  17    :  #include "base/logging.h"
  18    :  
  19    :  namespace pdb {
  20    :  
  21    :  // Here is a translation from our types to
  22  E :  bool PdbFixup::ValidHeader() const {
  23  E :    switch (type) {
  24    :      case TYPE_ABSOLUTE:
  25    :      case TYPE_RELATIVE:
  26    :      case TYPE_PC_RELATIVE: {
  27    :        // Ensure that no unknown flags are set.
  28  E :        return (flags & FLAG_UNKNOWN) == 0;
  29    :      }
  30    :  
  31    :      case TYPE_OFFSET_32BIT:
  32    :      case TYPE_OFFSET_8BIT: {
  33    :        // We've only ever seen offset fixups without flags.
  34  E :        return flags == 0;
  35    :      }
  36    :  
  37    :      default: {
  38  i :        return false;
  39    :      }
  40    :    }
  41  E :  }
  42    :  
  43  E :  size_t PdbFixup::size() const {
  44  E :    switch (type) {
  45  E :      case TYPE_ABSOLUTE: return 4;
  46  E :      case TYPE_RELATIVE: return 4;
  47  i :      case TYPE_OFFSET_32BIT: return 4;
  48  i :      case TYPE_OFFSET_8BIT: return 1;
  49  E :      case TYPE_PC_RELATIVE: return 4;
  50    :  
  51    :      default: {
  52  i :        NOTREACHED() << "Invalid PdbFixup::Type: " << type << ".";
  53    :      }
  54    :    }
  55    :  
  56  i :    return 0;
  57  E :  }
  58    :  
  59  E :  bool PdbFixup::is_offset() const {
  60    :    return type == TYPE_OFFSET_32BIT ||
  61  E :        type == TYPE_OFFSET_8BIT;
  62  E :  }
  63    :  
  64    :  }  // namespace pdb