SC_GPT::ReadHeader

__int64 __fastcall SC_GPT::ReadHeader(SC_GPT *this, int a2, struct GPT_HEADER *a3){
  SC_DISK *v4; 
  __int64 v6; 
  int Sectors; 
  int v8; 
  int v9; 
  int v10; 

  v4 = *(SC_DISK **)this;
  if( a2 )
    v6 = *((_QWORD *)v4 + 30) - 1i64;
  else
    v6 = 1i64;
  Sectors = SC_DISK::ReadSectors(v4, 1, v6, a3);
  if( Sectors >= 0 )
  {
    Sectors = -1073741774;
    if( *(_QWORD *)a3 == 0x5452415020494645i64
      && *((_DWORD *)a3 + 2) == 0x10000
      && *((_DWORD *)a3 + 3) == 92
      && *((_DWORD *)a3 + 21) == 128 )
    {
      v8 = *((_DWORD *)a3 + 20);
      if( (unsigned int)(v8 - 1) <= 0x3FF && *((_QWORD *)a3 + 3) == v6 )
      {
        v9 = *((_DWORD *)a3 + 4);
        *((_DWORD *)a3 + 4) = 0;
        v10 = RtlComputeCrc32(0i64, (UINT8 *)a3, 0x5Cui64);
        *((_DWORD *)a3 + 4) = v9;
        if( v10 == v9 )
          return *((_QWORD *)a3 + 5) < (unsigned __int64)(((((v8 << 7) + *(_DWORD *)(*(_QWORD *)this + 228i64) - 1) & (unsigned int)-*(_DWORD *)(*(_QWORD *)this + 228i64)) >> *(_DWORD *)(*(_QWORD *)this + 232i64))
                                                        + 2) ? 0xC0000032 : 0;
      }
    }
  }
  return(unsigned int)Sectors;
}

Referenced by: