Add running level management support

xtoskrnl/includes/hl.h

@@ -40,6 +40,11 @@ HlDrawPixel(IN ULONG PosX,
             IN ULONG PosY,
             IN ULONG Color);
 
+XTFASTCALL
+KRUNLEVEL
+HlGetRunLevel();
+
+
 XTCDECL
 XTSTATUS
 HlInitializeComPort(IN OUT PCPPORT Port,
@@ -55,9 +60,21 @@ XTFASTCALL
 ULONG
 HlReadApicRegister(IN APIC_REGISTER Register);
 
+XTFASTCALL
+VOID
+HlSetRunLevel(IN KRUNLEVEL RunLevel);
+
 XTFASTCALL
 VOID
 HlWriteApicRegister(IN APIC_REGISTER Register,
                     IN ULONG Value);
 
+XTFASTCALL
+KRUNLEVEL
+HlpTransformApicTprToRunLevel(IN UCHAR Tpr);
+
+XTFASTCALL
+UCHAR
+HlpTransformRunLevelToApicTpr(IN KRUNLEVEL RunLevel);
+
 #endif /* __XTOSKRNL_HL_H */