Geoff Chappell, Software Analyst
This page lists the functions and variables that are newly exported by name from the Windows kernel in its first release for version 6.3, i.e., for the original Windows 8.1.
Few of the new functions for version 6.3 seem to be documented by Microsoft as far as shows up in a search online today (29th February 2016). Several of those do not appear in the documentation that Microsoft offered when saying “The Windows Driver Kit (WDK) is integrated with Microsoft Visual Studio” whether in 2014 for Windows 8.1 or even in 2015 for Windows 10.
Documentation status is summarised by colour coding so that more detail can be given as Remarks with less text. Functions that have their own non-trivial documentation are shown with no background colour. If the function is documented as reserved or obsolete, with or without a prototype, it is shaded red or shaded grey, respectively. An undocumented function that is at least declared in one or another header file from the Windows Driver Kit (WDK) is shaded orange. If the only declaration that Microsoft is known to have disclosed publicly is from the “minwin” directory of the Enterprise WDK for Windows 10 version 1511, specifically, then the function is highlighted orange. Functions that appear to be completely undocumented are highlighted yellow. If a function is documented now but is known not to have been documented in the first contemporaneous Device Driver Kit (DDK), WDK or Installable File System (IFS) Kit, then it is shaded yellow to retain some of its previous status as undocumented.
|ExAllocateTimer||undocumented until 2015-2016 (see note below)|
|ExCancelTimer||undocumented until 2015-2016 (see note below)|
|ExDeleteTimer||undocumented until 2015-2016 (see note below)|
|ExSetTimer||undocumented until 2015-2016 (see note below)|
|InterlockedPushListSList||undocumented until 2014-2015;
documentation (but as KERNEL32 export) requires Windows Vista as minimum;
declaration requires Windows XP and higher
|IoQueryFullDriverPath||undocumented until 2015-2016|
|MmCopyMemory||undocumented until 2015-2016|
|PoFxPowerOnCrashdumpDevice||undocumented until 2014-2015|
|PoFxRegisterCrashdumpDevice||undocumented until 2014-2015|
Four functions that work with timer objects are described above as having been initially undocumented. The WDK documentation for Windows 8.1 and again for Windows 10 that Microsoft presents as “integrated” with successive editions of Visual Studio has a page titled ExXxxTimer Routines and EX_TIMER Objects that lists the functions, and even describes them, but the links to what might have been the documentation of the functions themselves are broken. Whether, or for how long, the supposedly same documentation online had this deficiency is not known, just that the page was seen to be available online in 2016.
Version 6.3 discontinues notably many exports, none of which are known ever to have been documented or declared: