Index: kernel/arch/ppc32/include/asm.h
===================================================================
--- kernel/arch/ppc32/include/asm.h	(revision 70047478224039b394ba6d1a4ba25ae4fb58ab81)
+++ kernel/arch/ppc32/include/asm.h	(revision 6da1013f00030b5dcedc878f40a0e6242a8d3282)
@@ -150,4 +150,15 @@
 extern void userspace_asm(uintptr_t uspace_uarg, uintptr_t stack, uintptr_t entry);
 
+/** No I/O port address space on PowerPC. */
+static inline void outb(ioport_t port, uint8_t v)
+{
+}
+
+/** No I/O port address space on PowerPC. */
+static inline uint8_t inb(ioport_t port)
+{
+	return 0;
+}
+
 #endif
 
Index: kernel/arch/ppc32/src/ppc32.c
===================================================================
--- kernel/arch/ppc32/src/ppc32.c	(revision 70047478224039b394ba6d1a4ba25ae4fb58ab81)
+++ kernel/arch/ppc32/src/ppc32.c	(revision 6da1013f00030b5dcedc878f40a0e6242a8d3282)
@@ -168,4 +168,18 @@
 }
 
+/** Construct function pointer
+ *
+ * @param fptr   function pointer structure
+ * @param addr   function address
+ * @param caller calling function address
+ *
+ * @return address of the function pointer
+ *
+ */
+void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
+{
+	return addr;
+}
+
 /** @}
  */