--- Libc/Libc-391.4.2/ppc/sys/reboot.s
+++ Libc/Libc-320.1.3/ppc/sys/reboot.s
@@ -25,4 +25,4 @@
 #import	"SYS.h"
 
 SYSCALL(reboot, 2)
-	MI_BRANCH_EXTERNAL(_abort)
+	BRANCH_EXTERN(_abort)