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

OBJDIRS 	+= kern

KERN_ENTRY_ADDR	:= 0x200000
KERN_SRCFILES:=	kern/astart.asm	\
		kern/atrap.asm	\
		kern/keyboard.c	\
		kern/main.c	\
		kern/start.c	\
		kern/time.c	\
		kern/trap.c	\
		lib/libch4Core.a\
		lib/terminal.c	\
		lib/printfmt.c	\
		lib/string.c	

KERN_OBJFILES	:= $(patsubst %.c, $(OBJDIR)/%.o, $(KERN_SRCFILES))
KERN_OBJFILES	:= $(patsubst %.asm, $(OBJDIR)/%.o, $(KERN_OBJFILES))
KERN_OBJFILES	:= $(patsubst $(OBJDIR)/lib/%, $(OBJDIR)/kern/%, $(KERN_OBJFILES))

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

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

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

$(OBJDIR)/kern/%.a: lib/%.a $(OBJDIR)/.vars.CFLAGS
	@echo + cp lib $<
	@mkdir -p $(@D)
	@cp $< $(@D)

$(OBJDIR)/kern/kernel.bin: $(KERN_OBJFILES) $(OBJDIR)/.vars.LDFLAGS
	@echo + ld $@
	@$(LD) $(LDFLAGS) -s -Ttext $(KERN_ENTRY_ADDR) -o $@ $(KERN_OBJFILES) $(GCC_LIB)
	@$(LD) $(LDFLAGS) -Ttext $(KERN_ENTRY_ADDR) -o $(OBJDIR)/kern/kernel.dbg $(KERN_OBJFILES) $(GCC_LIB)

all: $(OBJDIR)/kern/a.img