MiGetPhysicalMemoryRanges

NTSTATUS __stdcall MiGetPhysicalMemoryRanges(_MI_PARTITION *Partition, INT8 a2){
  _ETHREAD *CurrentThread; 
  __int64 v3; 
  unsigned int v4; 
  int v6; 
  PHYSICAL_MEMORY_DESCRIPTOR *v7; 
  PHYSICAL_MEMORY_DESCRIPTOR *v8; 
  unsigned __int64 v9; 
  char *v10; 
  _QWORD *Pool; 
  NTSTATUS v12; 
  _QWORD *v13; 
  unsigned __int64 *p_PageCount; 
  unsigned __int64 v15; 
  unsigned __int64 NumberOfPhysicalPages; 
  char *FileOnlyRanges; 
  __int64 v19; 
  char v20; 
  __int64 v21; 

  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  v3 = 0i64;
  v20 = 0;
  v4 = a2;
  v6 = a2 & 1;
  if( (a2 & 1) != 0 || Partition != &Irp )
  {
    v20 = 1;
    MiLockDynamicMemoryShared((INT64)Partition, (INT64)CurrentThread);
    if( Partition != &Irp )
    {
      while( Partition->Vp.NumberOfPhysicalPages && !Partition->Core.MemoryRuns )
      {
        MiUnlockDynamicMemoryShared((INT64)Partition, (INT64)CurrentThread);
        MiLockDynamicMemoryExclusive(Partition, CurrentThread);
        NumberOfPhysicalPages = Partition->Vp.NumberOfPhysicalPages;
        if( NumberOfPhysicalPages )
        {
          if( !Partition->Core.MemoryRuns )
          {
            MiMakePartitionMemoryBlock(Partition);
            NumberOfPhysicalPages = Partition->Vp.NumberOfPhysicalPages;
          }
          if( NumberOfPhysicalPages && !Partition->Core.MemoryRuns )
          {
            MiUnlockDynamicMemoryExclusive(Partition, CurrentThread);
            return 0;
          }
        }
        MiUnlockDynamicMemoryExclusive(Partition, CurrentThread);
        MiLockDynamicMemoryShared((INT64)Partition, (INT64)CurrentThread);
      }
    }
  }
  v7 = MiReferencePageRuns((ULONG_PTR *)&Partition->Core.PartitionId, 0i64);
  v8 = v7;
  if( v7 )
    v9 = v7->NumberOfRuns & (unsigned __int64)-(__int64)(Partition->Vp.NumberOfPhysicalPages != 0);
  else
    v9 = 0i64;
  v21 = 0i64;
  v10 = 0i64;
  if( v6 )
  {
    FileOnlyRanges = MiGetFileOnlyRanges((__int16 *)Partition, (VOID *)v4, &v21);
    v3 = v21;
    v10 = FileOnlyRanges;
  }
  Pool = MiAllocatePool(64i64, 16 * (v3 + v9 + 1), 0x68506D4Dui64);
  v12 = (int)Pool;
  if( Pool )
  {
    v13 = Pool;
    if( v9 )
    {
      p_PageCount = &v8->Run[0].PageCount;
      do
      {
        *v13 = *(p_PageCount - 1) << 12;
        v15 = *p_PageCount;
        p_PageCount += 2;
        v13[1] = v15 << 12;
        v13 += 2;
        --v9;
      }
      while( v9 );
    }
    if( v3 )
    {
      v19 = 16 * v3;
      memmove(v13, v10, v19);
      v13 = (_QWORD *)((char *)v13 + v19);
    }
    *v13 = 0i64;
    v13[1] = 0i64;
  }
  if( v20 )
    MiUnlockDynamicMemoryShared((INT64)Partition, (INT64)CurrentThread);
  if( v8 )
    MiDereferencePageRuns(v8);
  if( v10 )
    ExFreePoolWithTag(v10, 0);
  return v12;
}

Referenced by: