makefile

#CFLAGS = -fno-stack-protector -std=c99 -march=i686 -ffreestanding -Wall -g
#CFLAGS = -fno-stack-protector -ffreestanding -fno-builtin -g

include rule.mk

FS_SRC = fs/romfs.c fs/vfs.c
FS_OBJS = fs/romfs.o fs/vfs.o

all: boot.img

boot.img: p_kernel.elf
	git clone https://github.com/descent/write_os.git ; cd write_os/src/chapter2/2 ; make
	cp write_os/src/chapter2/2/boot.img .
	script/cp2img.sh
	@echo ""
	@echo "type 'qemu-system-i386 -fda boot.img' for test"


kloaderp.bin: 
	(cd kernel_loader; make)

boot1.img: c_init.bin
	dd if=$< of=$@ bs=512 count=1
	dd if=/dev/zero of=$@ skip=1 seek=1 bs=512 count=2879

c_init.bin: c_init.elf
	objcopy -R .pdr -R .comment -R.note -S -O binary $< $@

c_init.elf: c_init.o b.o bss.lds
	ld $(LDFLAGS) -nostdlib -g -o $@ -Tbss.lds c_init.o b.o 
c_init.o: c_init.s
	as $(ASFLAGS) -o $@ $<
b.o: b.c
	#gcc -std=c99 -fno-stack-protector -m32 -ffreestanding -fno-builtin -g -Iinclude -I../include -Os -c $<
	gcc -std=c99 -fno-stack-protector -m32 -ffreestanding -fno-builtin -g -Iinclude -I../include -fomit-frame-pointer -fno-exceptions -fno-asynchronous-unwind-tables -fno-unwind-tables -Os -c $<
b.s: b.c
	gcc -S $(CFLAGS) -c $<

c_init_by_boot_loader.bin: c_init_by_boot_loader.elf
	objcopy -R .pdr -R .comment -R.note -S -O binary $< $@

c_init_by_boot_loader.elf: c_init_by_boot_loader.o b_by_bootloader.o switch_vga_mode.o bss_dos.lds
	ld $(LDFLAGS) -nostdlib -g -o $@ -Tbss_dos.lds c_init_by_boot_loader.o b_by_bootloader.o switch_vga_mode.o
c_init_by_boot_loader.o: c_init_by_boot_loader.s
	as $(ASFLAGS) -o $@ $<
b_by_bootloader.o: b_by_bootloader.c
	gcc $(CFLAGS) -c $<
b_by_bootloader.s: b_by_bootloader.c
	gcc -S $(CFLAGS) $<
switch_vga_mode.o: switch_vga_mode.c
	gcc $(CFLAGS) -c $<
switch_vga_mode.s: switch_vga_mode.c
	gcc -S $(CFLAGS) $<

kloader.bin: kernel_loader.elf
	objcopy -R .pdr -R .comment -R.note -S -O binary $< $@

kernel_loader.elf: c_init_by_boot_loader.o kernel_loader.o 
	ld $(LDFLAGS) -nostdlib -g -o $@ -Tbss_dos.lds $^

kernel.bin: kernel.elf
	objcopy -R .pdr -R .comment -R.note -S -O binary $< $@
kernel.elf: kernel.o
	ld $(LDFLAGS) -nostdlib -g -o $@ -Tbss_dos.lds $^
kernel.o: kernel.s
	as $(ASFLAGS) -o $@ $<


p_kernel.elf: p_kernel.o io/k_stdio.o asm_func.o asm_syscall.o $(FS_OBJS) vga/set_mode_p.o vga/draw_func.o vga/font_rawdata.o tty/tty.o tty/keyboard.o tty/console.o clock.o start.o process.o storage.o syscall.o io/k_stdio_k.o k_assert.o systask.o test-romfs.o mm/mm.o k_stdlib.o
	ld $(LDFLAGS) -nostdlib -M -g -o $@ -Tk.ld $^ > $@.map && cp $@ $@.gdb && strip $@

p_kernel.o: p_kernel.s
	as --32 -o $@ $<

test-romfs.o: rom.fs
	objcopy -I binary -O elf32-i386 -B i386 --prefix-sections '.romfs' $< test-romfs.o
#rom.fs:
	
#start.o: start.c io.h clock.h protect.h process.h syscall.h \
# include/storage.h include/type.h include/romfs.h include/k_string.h \
#  include/endian.h
#	gcc $(CFLAGS) -c $<

start.s: start.c type.h protect.h process.h
	gcc $(CFLAGS) -o $@ -S $<

#process.o: process.c process.h include/type.h protect.h
#	gcc $(CFLAGS) -c $<
#
#clock.o: clock.c clock.h include/type.h process.h protect.h
#	gcc $(CFLAGS) -c $<
#
#storage.o: storage.c include/storage.h include/type.h
#	gcc $(CFLAGS) -c $<

asm_func.o: asm_func.s
	as --32 -o $@ $<

asm_func.s: asm_func.S
	gcc $(CFLAGS) -o $@ -E $<

asm_syscall.o: asm_syscall.s
	as --32 -o $@ $<
asm_syscall.s: asm_syscall.S include/syscall.h process_const.h
	gcc $(CFLAGS) -o $@ -E $<

#syscall.o: syscall.c syscall.h
#	gcc $(CFLAGS) -c $<

$(FS_OBJS):$(FS_SRC)
	(cd fs; make)
mm/mm.o: mm
	(cd mm; make mm.o)
vga/set_mode_p.o: vga
	(cd vga; make set_mode_p.o)

vga/draw_func.o: vga
	(cd vga; make draw_func.o)

vga/font_rawdata.o: vga
	(cd vga; make font_rawdata.o)

io/k_stdio.o: io
	(cd io; make k_stdio.o)
io/k_stdio_k.o: io
	(cd io; make k_stdio_k.o)
tty/keyboard.o: tty
	(cd tty; make keyboard.o)
tty/console.o: tty
	(cd tty; make console.o)
tty/tty.o: tty
	(cd tty; make tty.o)
sources = clock.c start.c process.c storage.c syscall.c k_assert.c systask.c k_stdlib.c
include $(sources:.c=.d)
#C_OBJS = $(sources:.c=.o)
C_OBJS = clock.o start.o process.o storage.o syscall.o

#o:
#	echo $(C_OBJS)

rom.fs: genromfs romfs
	./others/genromfs -d romfs/ -f rom.fs

genromfs:
	if [ ! -d "romfs" ]; then echo "mkdir romfs" ; mkdir romfs ; fi
	(cd others; make)

.PHONE: clean distclean kloaderp.bin

clean:
	rm -rf *.o *.elf *.bin asm_syscall.s romfs ; #(cd kernel_loader; make clean)
	find . -name "*.d" -exec rm -f {} \;
distclean:
	rm -rf *.img write_os