Method InitializeSectionsFromMapList

Bcore/src/main/cpp/dex/dex_file.cc:174–199

}

void DexFile::InitializeSectionsFromMapList() {
  const MapList* map_list = reinterpret_cast<const MapList*>(DataBegin() + header_->map_off_);
  if (header_->map_off_ == 0 || header_->map_off_ > DataSize()) {
    // Bad offset. The dex file verifier runs after this method and will reject the file.
    return;
  }
  const size_t count = map_list->size_;

  size_t map_limit = header_->map_off_ + count * sizeof(MapItem);
  if (header_->map_off_ >= map_limit || map_limit > DataSize()) {
    // Overflow or out out of bounds. The dex file verifier runs after
    // this method and will reject the file as it is malformed.
    return;
  }

  for (size_t i = 0; i < count; ++i) {
    const MapItem& map_item = map_list->list_[i];
    if (map_item.type_ == kDexTypeMethodHandleItem) {
      method_handles_ = reinterpret_cast<const MethodHandleItem*>(Begin() + map_item.offset_);
      num_method_handles_ = map_item.size_;
    } else if (map_item.type_ == kDexTypeCallSiteIdItem) {
      call_site_ids_ = reinterpret_cast<const CallSiteIdItem*>(Begin() + map_item.offset_);
      num_call_site_ids_ = map_item.size_;
    }
  }
}

uint32_t DexFile::Header::GetVersion() const {
  const char* version = reinterpret_cast<const char*>(&magic_[kDexMagicSize]);