MiComputeImagePteIndex

NTSTATUS __stdcall MiComputeImagePteIndex(_MMPFN *Pfn1, UINT64 SessionId){
  union {unsigned __int64 Long;volatile unsigned __int64 VolatileLong;_MMPTE_HARDWARE Hard;_MMPTE_PROTOTYPE Proto;_MMPTE_SOFTWARE Soft;_MMPTE_TIMESTAMP TimeStamp;_MMPTE_TRANSITION Trans;_MMPTE_SUBSECTION Subsect;_MMPTE_LIST List;} v2; 
  unsigned __int64 v3; 
  __int64 v4; 
  __int64 v5; 
  _CONTROL_AREA *v6; 
  _MI_PER_SESSION_PROTOS *SubsectionDriverProtos; 
  _RTL_BALANCED_NODE *SharedProtos; 
  _RTL_BALANCED_NODE *v9; 
  _MMPTE *SubsectionBase; 

  v2.Long = (unsigned __int64)Pfn1->OriginalPte.u;
  v3 = Pfn1->PteLong | 0x8000000000000000ui64;
  LODWORD(v4) = 0;
  if( *(&stru_140C4DB30 + 42) && (v2.Long & 0x10) == 0 )
    v2.Long &= ~*(&stru_140C4DB30 + 42);
  v5 = v2.Hard._bf_0 >> 16;
  v6 = *(_CONTROL_AREA **)v5;
  if( (*(_BYTE *)(v5 + 34) & 2) != 0 && (v6->u.LongFlags & 0x4000000) != 0 )
  {
    SharedProtos = MiGetSharedProtos(*(_CONTROL_AREA **)v5, SessionId, (_SUBSECTION *)v5);
  }
  else
  {
    SubsectionDriverProtos = MiGetSubsectionDriverProtos((_SUBSECTION *)v5);
    SharedProtos = &SubsectionDriverProtos->SessionProtoNode;
    if( SubsectionDriverProtos )
    {
      SubsectionBase = SubsectionDriverProtos->SubsectionBase;
      if( v3 < (unsigned __int64)SubsectionBase || v3 >= (unsigned __int64)&SubsectionBase[*(unsigned int *)(v5 + 44)] )
        SharedProtos = 0i64;
    }
  }
  if( SharedProtos )
  {
    v9 = SharedProtos[3].Children[0];
    v4 = (__int64)(*(_QWORD *)(v5 + 8) - *(_QWORD *)v6[1].gap8) >> 3;
  }
  else
  {
    v9 = *(_RTL_BALANCED_NODE **)v6[1].gap8;
  }
  return v4 + ((__int64)(v3 - (_QWORD)v9) >> 3);
}

Referenced by: