--- kernel/machdep/ppc/movc.s	2018/04/24 18:26:09	1.1
+++ kernel/machdep/ppc/movc.s	2018/04/24 18:33:03	1.1.1.2
@@ -354,3 +354,26 @@ ENTRY(cioseg, TAG_NO_FRAME_USED)
 	oris	r3,	r3,	(SR_COPYIN << (28-16))
 
 	blr
+
+ENTRY(find_phys, TAG_NO_FRAME_USED)
+        /* Switch off data translations */
+        mfmsr   r11
+        rlwinm  r10, r11, 0, MSR_DR_BIT+1, MSR_DR_BIT-1
+        mtmsr   r10
+        isync
+
+	mr	r10, r3
+	li	r3, 0
+L_loop_find:
+	cmpw	r4, r5
+	bge	L_find_exit
+	lwz	r9, 0(r4)
+	addi	r4, r4, 4
+	cmpw	r9, r10
+	bne	L_loop_find
+	subi	r3, r4, 4
+L_find_exit:
+	mtmsr	r11		/* Restore original translations */
+	isync
+
+	blr