HvIsCellAllocated

UINT8 __stdcall HvIsCellAllocated(_HHIVE *Hive, UINT64 Cell, _RTL_BITMAP *BitMap){
  bool v3; 
  _RTL_BITMAP *v4; 
  unsigned __int64 v5; 
  __int64 v7; 
  unsigned int Length; 
  _HMAP_ENTRY *v9; 
  __int64 v10; 
  int *v11; 
  int v12; 
  int v13; 
  unsigned int v14; 
  unsigned int v15; 
  __int64 v16; 
  UINT8 v17; 
  __int64 v19; 

  v19 = 0i64;
  v3 = (Hive->_bf_8c & 1) == 0;
  v4 = BitMap;
  v5 = (unsigned int)Cell;
  LODWORD(v19) = -1;
  if( !v3 )
    return 1;
  v7 = (unsigned int)Cell >> 31;
  Length = Hive->Storage[v7].Length;
  if( (Cell & 0x7FFFFFFF) >= Length || (Cell & 7) != 0 )
    return 0;
  if( BitMap && (Cell & 0x80000000) == 0i64 )
  {
    if( !_bittest64((const signed __int64 *)BitMap->Buffer, (unsigned int)Cell >> 3) )
      return 0;
    RtlClearBits(BitMap, (unsigned int)Cell >> 3, 1u);
    Length = Hive->Storage[v7].Length;
  }
  if( (unsigned int)v5 + (v5 & 0x80000000) >= Length )
    return 0;
  v9 = &Hive->Storage[v7].Map->Directory[(v5 >> 21) & 0x3FF]->Table[(v5 >> 12) & 0x1FF];
  if( !v9 || (v9->PermanentBinAddress & 2) != 0 )
    return 0;
  v10 = ((__int64(__fastcall *)(_HHIVE *, _QWORD, __int64 *, _RTL_BITMAP *))Hive->GetCellRoutine)(
          Hive,
          (unsigned int)v5,
          &v19,
          v4);
  if( !v10 )
    return 1;
  v11 = (int *)(v10 - 4);
  if( !v11 )
    return 1;
  v12 = (int)v11;
  v13 = *v11;
  v14 = v12 - (v9->PermanentBinAddress & 0xFFFFFFF0);
  v15 = -v13;
  v17 = 0;
  if( v13 < 0 && v15 - 8 <= 0xFFFF8 )
  {
    v16 = *(unsigned int *)((v9->PermanentBinAddress & 0xFFFFFFFFFFFFFFF0ui64) + 8);
    if( v15 <= (unsigned __int64)(v16 - 32) && v14 - v13 <= (unsigned int)v16 && v14 >= 0x20 )
      v17 = 1;
  }
  Hive->ReleaseCellRoutine(Hive, (_HV_GET_CELL_CONTEXT *)&v19);
  return v17;
}

Referenced by: