Index: uspace/lib/c/arch/ppc32/src/syscall.c
===================================================================
--- uspace/lib/c/arch/ppc32/src/syscall.c	(revision ae7d03c05f24b857bbbdbcf3dafbf8ecc6c286ab)
+++ uspace/lib/c/arch/ppc32/src/syscall.c	(revision 401415aa8fcb6902c643bf1c028f08be8f7c2d8e)
@@ -58,4 +58,10 @@
 	      "r" (__ppc32_reg_r8),
 	      "r" (__ppc32_reg_r9)
+	    :
+	      /*
+	       * Clobber memory too as some arguments might be
+	       * actually pointers.
+	       */
+	      "memory"
 	);