HeadlessDispatch

INT64 __fastcall HeadlessDispatch(UINT64 a1, UINT8 *a2, UINT64 a3, UINT8 *a4, INT64 *OutputBufferSize){
  int v6; 
  if( !HeadlessGlobals || !HeadlessGlobals[1] )
  {
    if( (_DWORD)a1 == 21 || (_DWORD)a1 == 1 )
      return 3221225473i64;
    if( (unsigned int)a1 <= 0x10 )
    {
      v6 = 79876;
      if( _bittest(&v6, a1) )
      {
        if( !a4 || !OutputBufferSize )
          return 3221225485i64;
        memset((INT64)a4, 0i64);
      }
    }
    return 0i64;
  }
  return HdlspDispatch(a1, (__int64)a2, a3, (__int64)a4, OutputBufferSize);
}

Referenced by:

BgkDisplayStringEx
BvgaDisplayString
BvgaSetTextColor
BvgaSolidColorFill
EtwpInitializeActivityIdSeed
KiDisplayBlueScreen
KiHeadlessDisplayString