Implement basic APIC support, including X2APIC

xtoskrnl/includes/globals.h

@@ -12,6 +12,9 @@
 #include <xtos.h>
 
 
+/* APIC mode */
+EXTERN HAL_APIC_MODE HlpApicMode;
+
 /* FrameBuffer information */
 EXTERN HAL_FRAMEBUFFER_DATA HlpFrameBufferData;
 

xtoskrnl/includes/hl.h

@@ -69,6 +69,22 @@ VOID
 HlWriteApicRegister(IN APIC_REGISTER Register,
                     IN ULONG Value);
 
+XTAPI
+BOOLEAN
+HlpCheckX2ApicSupport(VOID);
+
+XTCDECL
+VOID
+HlpHandleApicSpuriousService();
+
+XTCDECL
+VOID
+HlpHandlePicSpuriousService();
+
+XTAPI
+VOID
+HlpInitializeApic();
+
 XTFASTCALL
 KRUNLEVEL
 HlpTransformApicTprToRunLevel(IN UCHAR Tpr);