added Makefile commands to build a binary and an ELF kernel and do disassemble the ELF version

git-svn-id: svn://anubis/hos/trunk@53 5b3e749e-e535-0410-8002-a9bb6afbdfca

kernel/Makefile

@@ -2,6 +2,7 @@
 export LD       := i586-elf-ld
 export CC       := i586-elf-gcc
 export CXX      := i586-elf-g++
+export OBJDUMP  := i586-elf-objdump
 export NASM     := nasm
 
 WD              := $(shell pwd)
@@ -23,8 +24,13 @@ all: $(KERNEL).gz
 $(KERNEL).gz: $(KERNEL)
 	gzip -c $< > $@
 
-$(KERNEL): $(SUBDIRS)
-	$(LD) $(LDFLAGS) -o $@ $(foreach subdir,$(SUBDIRS),$(subdir)/$(subdir)_all.o) $(LDLIBS)
+$(KERNEL): $(KERNEL).o
+	$(LD) $(LDFLAGS) -o $@ $<
+	$(LD) $(LDFLAGS) --oformat=elf32-i386 -o $@.elf $<
+	$(OBJDUMP) --disassemble --source $@.elf > $@.dump
+	
+$(KERNEL).o: $(SUBDIRS)
+	$(LD) -r -o $@ $(foreach subdir,$(SUBDIRS),$(subdir)/$(subdir)_all.o) $(LDLIBS)
 
 .PHONY: $(SUBDIRS)
 $(SUBDIRS):
@@ -32,7 +38,7 @@ $(SUBDIRS):
 
 .PHONY: clean
 clean: $(SUBDIRS_clean)
-	-rm -f *~ $(KERNEL) $(KERNEL).gz
+	-rm -f *~ $(KERNEL) $(KERNEL).{gz,o,elf,dump,map}
 
 %.clean:
 	$(MAKE) -C $* clean clean=1