#
# makefile的boot部分，
# 将会导入到根目录的makefile文件
#

OBJDIRS 	+= boot

LOADER_OBJS	:= $(OBJDIR)/boot/loader.o $(OBJDIR)/boot/loadkernel.o
LOADER_LINKER	:= boot/linker.ld

$(OBJDIR)/boot/%.o: boot/%.c $(OBJDIR)/.vars.CFLAGS
	@echo + cc $<
	@mkdir -p $(@D)
	@$(CC) $(CFLAGS) -c -o $@ $<

$(OBJDIR)/boot/%.o: boot/%.asm
	@echo + as obj $<
	@mkdir -p $(@D)
	@$(AS) -f elf -o $@ $<

$(OBJDIR)/boot/boot.bin: boot/boot.asm
	@echo + as bin $<
	@mkdir -p $(@D)
	@$(AS) -o $@ $<

$(OBJDIR)/boot/loader.bin: $(LOADER_OBJS) $(LOADER_LINKER) $(OBJDIR)/.vars.LDFLAGS
	@echo + ld $@
	@$(LD) $(LDFLAGS) -s -T $(LOADER_LINKER) --oformat binary -o $@ $(LOADER_OBJS)