Implement HlClearApicErrors() and HlSendEoi() routines, change HlDisableLegacyPic() calling convention

xtoskrnl/hl/x86/pic.c

@@ -10,6 +10,21 @@
 #include <xtos.h>
 
 
+/**
+ * Clears all errors on the APIC.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+VOID
+HlClearApicErrors()
+{
+    /* Clear APIC errors */
+    HlWriteApicRegister(APIC_ESR, 0);
+}
+
 /**
  * Disables the legacy 8259 Programmable Interrupt Controller (PIC).
  *
@@ -17,9 +32,9 @@
  *
  * @since XT 1.0
  */
-XTCDECL
+XTAPI
 VOID
-HlDisablePic(VOID)
+HlDisableLegacyPic()
 {
     HlIoPortOutByte(PIC1_DATA_PORT, 0xFF);
     HlIoPortOutByte(PIC2_DATA_PORT, 0xFF);
@@ -51,6 +66,21 @@ HlReadApicRegister(IN APIC_REGISTER Register)
     }
 }
 
+/**
+ * Signals to the APIC that handling an interrupt is complete.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+VOID
+HlSendEoi()
+{
+    /* Send APIC EOI */
+    HlWriteApicRegister(APIC_EOI, 0);
+}
+
 /**
  * Writes to the APIC register.
  *