MiCopyToUntrustedMemory

VOID __fastcall MiCopyToUntrustedMemory(
        VOID *UntrustedDestination,
        VOID *Source,
        UINT64 NumberOfBytes,
        UINT64 ChunkSize){
  unsigned int v4; 
  _BYTE *v5; 
  _BYTE *v6; 
  __int64 v7; 
  unsigned int v8; 
  unsigned int i; 
  __int64 v10; 
  v4 = NumberOfBytes;
  v5 = Source;
  v6 = UntrustedDestination;
  v7 = 0i64;
  v10 = 0i64;
  if( (_DWORD)ChunkSize
    || (((unsigned __int8)UntrustedDestination | (unsigned __int8)Source) & 7) != 0
    || (NumberOfBytes & 7) != 0 )
  {
    while( v4 )
    {
      if( (_DWORD)ChunkSize )
      {
        v8 = ChunkSize;
        if( (unsigned int)ChunkSize > v4 )
          v8 = 1;
      }
      else
      {
        v8 = v4 & 7;
        if( (v4 & 7) != 0 )
        {
          if( ((v8 - 1) & v8) != 0 )
            v8 = 1;
        }
        else
        {
          v8 = 8;
        }
      }
      if( ((v8 - 1) & (unsigned int)v6) != 0 )
        v8 = 1;
      for( i = 0; i < v8; ++i )
      {
        *((_BYTE *)&v10 + i) = *v5++;
        v7 = v10;
      }
      switch( v8 )
      {
        case 1u:
          *v6 = v7;
          break;
        case 2u:
          *(_WORD *)v6 = v7;
          break;
        case 4u:
          *(_DWORD *)v6 = v7;
          break;
        case 8u:
          *(_QWORD *)v6 = v7;
          break;
      }
      v4 -= v8;
      v6 += v8;
    }
  }
  else
  {
    memmove((UINT8 *)UntrustedDestination, (UINT8 *)Source, (unsigned int)NumberOfBytes);
  }
}

Referenced by: