4805 apic_mode global should be an enum

@@ -101,14 +101,16 @@
 
 /* Divider Configuration Register */
 #define APIC_DIVIDE_REG         0xf8
 
 /* Various mode for local APIC. Modes are mutually exclusive  */
-#define APIC_IS_DISABLED        0x0
-#define APIC_MODE_NOTSET        0x1
-#define LOCAL_APIC              0x2
-#define LOCAL_X2APIC            0x3
+typedef enum apic_mode {
+        APIC_IS_DISABLED = 0,
+        APIC_MODE_NOTSET,
+        LOCAL_APIC,
+        LOCAL_X2APIC
+} apic_mode_t;
 
 /* x2APIC SELF IPI Register */
 #define X2APIC_SELF_IPI         0xFC
 
 /* General x2APIC constants used at various places */

@@ -863,11 +865,11 @@
 extern int apic_multi_msi_enable;
 extern int apic_sci_vect;
 extern int apic_hpet_vect;
 extern uchar_t apic_ipls[];
 extern apic_reg_ops_t *apic_reg_ops;
-extern int apic_mode;
+extern apic_mode_t apic_mode;
 extern void x2apic_update_psm();
 extern void apic_change_ops();
 extern void apic_common_send_ipi(int, int);
 extern void apic_set_directed_EOI_handler();
 extern int apic_directed_EOI_supported();