Register interrupt handlers once the APIC initialization is done

xtoskrnl/ke/i686/irqs.c

@@ -0,0 +1,38 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/ke/i686/irqs.c
+ * DESCRIPTION:     Kernel interrupts support for i686 architecture
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtos.h>
+
+
+/**
+ * Sets new interrupt handler for the existing IDT entry.
+ *
+ * @param HalVector
+ *        Supplies the HAL vector number.
+ *
+ * @param Handler
+ *        Supplies the new interrupt handler.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+VOID
+KeSetInterruptHandler(IN ULONG Vector,
+                      IN PVOID Handler)
+{
+    PKPROCESSOR_BLOCK ProcessorBlock;
+
+    /* Get current processor block */
+    ProcessorBlock = KeGetCurrentProcessorBlock();
+
+    /* Update interrupt handler */
+    ProcessorBlock->IdtBase[(UCHAR) Vector].Offset = (USHORT)((ULONG)Handler & 0xFFFF);
+    ProcessorBlock->IdtBase[(UCHAR) Vector].ExtendedOffset = (USHORT)((ULONG)Handler >> 16);
+}