add target to generate list of sysinits used

This is to help make sure everything you think is starting is..

mk/mu.progs.mk

@@ -34,7 +34,7 @@ PROGEXT = .elf
 DEPENDS += .arm_deps
 
 .for i in $(PROGS)
-ALLTGTS+= $(i)$(PROGEXT) $(i).list
+ALLTGTS+= $(i)$(PROGEXT) $(i).list $(i).sysinit
 ASRCS.$(i) = $(SRCS) $(SRCS.$(i))
 OBJS.$(i) = $(ASRCS.$(i):C/.c$/.o/)
 
@@ -43,6 +43,9 @@ ARM_DEP_SRCS+= $(ASRCS.$(i))
 $(i)$(PROGEXT) $(i).map: $(OBJS.$(i))
 	$(ARMCC) $(ARMTARGET) -o $(i)$(PROGEXT) $(.ALLSRC) -T$(LINKER_SCRIPT) --specs=nosys.specs -Wl,-Map="$(i).map" -Wl,--gc-sections -static --specs=nano.specs -Wl,--start-group -lc -lm -Wl,--end-group
 
+$(i).sysinit: $(ASRCS.$(i))
+	grep ^SYSINIT $(.ALLSRC) | sort -k 2 -k 3 > $@ || (rm -f $@ && false)
+
 $(i).list: $(i)$(PROGEXT)
 	$(ARMOBJDUMP) -h -S $(.ALLSRC) > $@ || (rm -f $@ && false)
 .endfor