Implement per-processor local clock initialization

xtoskrnl/hl/x86/timer.cc

@@ -447,6 +447,37 @@ HL::Timer::InitializeHpetTimer(VOID)
     return STATUS_SUCCESS;
 }
 
+/**
+ * Initializes the local hardware clock for the executing processor and registers
+ * the necessary clock interrupt handlers.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+VOID
+HL::Timer::InitializeLocalClock(VOID)
+{
+    XTSTATUS Status;
+
+    /* Check if LAPIC timer was selected as the system clock */
+    if(ClockType == TimerLapic && TimerRoutines.InitializeClock != NULLPTR)
+    {
+        /* Proceed with system clock initialization */
+        Status = TimerRoutines.InitializeClock();
+        if(Status != STATUS_SUCCESS)
+        {
+            /* CPU cannot operate without a functional system clock interrupt */
+            KE::Crash::Panic(0);
+        }
+    }
+
+    /* Register the system clock interrupt handler */
+    HL::Irq::RegisterSystemInterruptHandler(APIC_VECTOR_CLOCK, HL::Timer::HandleClockInterrupt);
+    HL::Irq::RegisterSystemInterruptHandler(APIC_VECTOR_CLOCK_IPI, HL::Timer::HandleClockIpiInterrupt);
+}
+
 /**
  * Initializes the legacy Programmable Interval Timer (PIT).
  *

xtoskrnl/includes/hl/timer.hh

@@ -38,6 +38,7 @@ namespace HL
             STATIC TIMER_TYPE TimerType;
 
         public:
+            STATIC XTAPI VOID InitializeLocalClock(VOID);
             STATIC XTAPI VOID InitializeTimer(VOID);
             STATIC XTAPI LARGE_INTEGER QueryPerformanceCounter(OUT PLARGE_INTEGER PerformanceFrequency);
             STATIC XTAPI ULONG SetClockRate(IN ULONG Rate);