Makefile:: add tags options; vmm.[ch] fix bug in find_vma Function, and update check_vma_struct Funciton from lab3-lab8

code/lab8/Makefile

@@ -1,8 +1,10 @@
-PROJ	:= 5
+PROJ	:= 8
 EMPTY	:=
 SPACE	:= $(EMPTY) $(EMPTY)
 SLASH	:= /
 
+V       := @
+
 # try to infer the correct GCCPREFX
 ifndef GCCPREFIX
 GCCPREFIX := $(shell if i386-ucore-elf-objdump -i 2>&1 | grep '^elf32-i386$$' >/dev/null 2>&1; \
@@ -353,9 +355,9 @@ touch:
 print-%:
 	@echo $($(shell echo $(patsubst print-%,%,$@) | $(TR) [a-z] [A-Z]))
 
-.PHONY: clean dist-clean handin packall
+.PHONY: clean dist-clean handin packall tags
 clean:
-	$(V)$(RM) $(GRADE_GDB_IN) $(GRADE_QEMU_OUT)  $(SFSBINS)
+	$(V)$(RM) $(GRADE_GDB_IN) $(GRADE_QEMU_OUT)  $(SFSBINS) cscope* tags
 	-$(RM) -r $(OBJDIR) $(BINDIR)
 
 dist-clean: clean
@@ -368,3 +370,9 @@ packall: clean
 	@$(RM) -f $(HANDIN)
 	@tar -czf $(HANDIN) `find . -type f -o -type d | grep -v '^\.*$$' | grep -vF '$(HANDIN)'`
 
+tags:
+	@echo TAGS ALL
+	$(V)rm -f cscope.files cscope.in.out cscope.out cscope.po.out tags
+	$(V)find . -type f -name "*.[chS]" >cscope.files
+	$(V)cscope -bq 
+	$(V)ctags -L cscope.files