Index: uspace/lib/c/Makefile
===================================================================
--- uspace/lib/c/Makefile	(revision 5713e5faae70dc250ec698512ff0096c4b9891ce)
+++ uspace/lib/c/Makefile	(revision 21365c0a5b774932892b0dcddd2cd5917d6abd67)
@@ -49,4 +49,11 @@
 -include $(CONFIG_MAKEFILE)
 -include arch/$(UARCH)/Makefile.inc
+
+ARCH_AUTOGENS_H := $(addsuffix .h,$(basename $(ARCH_AUTOGENS_AG)))
+ARCH_AUTOGENS_PROBE_C := $(addsuffix .ag.probe.c,$(basename $(ARCH_AUTOGENS_AG)))
+ARCH_AUTOGENS_PROBE_S := $(addsuffix .ag.probe.s,$(basename $(ARCH_AUTOGENS_AG)))
+
+PRE_DEPEND += $(ARCH_AUTOGENS_H)
+EXTRA_CLEAN += $(ARCH_AUTOGENS_H) $(ARCH_AUTOGENS_PROBE_C) $(ARCH_AUTOGENS_PROBE_S)
 
 GENERIC_SOURCES = \
@@ -160,4 +167,9 @@
 include $(USPACE_PREFIX)/Makefile.common
 
+%.h: %.ag
+	$(AUTOGEN) probe $< >$<.probe.c
+	$(CC) $(DEFS) $(CFLAGS) -S -o $<.probe.s $<.probe.c
+	$(AUTOGEN) generate $< <$<.probe.s >$@   
+
 $(LIBC_PREFIX)/arch/$(UARCH)/_link.ld: $(LIBC_PREFIX)/arch/$(UARCH)/_link.ld.in
 	$(CC) $(DEFS) $(CFLAGS) -DLIBC_PATH=$(CURDIR) -E -x c $< | grep -v "^\#" > $@