Index: uspace/lib/libc/arch/ppc32/src/stacktrace.S
===================================================================
--- uspace/lib/libc/arch/ppc32/src/stacktrace.S	(revision 5434000ae724f7d614db93420f8726e73e5ff54a)
+++ uspace/lib/libc/arch/ppc32/src/stacktrace.S	(revision c83d2b403088e27d649e3e270c68d1b82e908f01)
@@ -38,8 +38,19 @@
 
 frame_pointer_get:
+	mr r3, sp
+	blr
+
 frame_pointer_prev:
+	lwz r3, 0(r3)
+	blr
+
 frame_pointer_validate:
+	blr
+
 return_address_get:
+	lwz r3, 4(r3)
+	blr
+
 program_counter_get:
-	li r3, 0
+	mflr r3
 	blr