INT64 __fastcall PsRevertToUserPagePriorityThread(__int64 a1, int a2){
unsigned int v2;
--*(_WORD *)(a1 + 486);
if( a2 == -1 )
v2 = *(_DWORD *)(a1 + 1304) & 0xFFFFF0FF;
else
v2 = (a2 << 9) | *(_DWORD *)(a1 + 1304) & 0xFFFFF1FF;
*(_DWORD *)(a1 + 1304) = v2;
return KiLeaveGuardedRegionUnsafe(a1);
}