# FoolOS Makefile
#

IMAGE_SIZE=4096

all: FoolOS.img

FoolOS.img: mbr.bin kernel.bin fill.bin
	cat $^ | head -c $(IMAGE_SIZE) > $@

fill.bin: boot/fill.asm
	nasm -f bin $^ -o $@

mbr.bin: boot/mbr.asm
	nasm -f bin $^ -o $@

kernel_entry.o: boot/kernel_entry.asm
	nasm -f elf $^ -o $@

kernel.o: kernel/kernel.c
	gcc -ffreestanding -m32 -o $@ -c $^ -fno-asynchronous-unwind-tables

kernel.bin: kernel_entry.o kernel.o
	ld -o $@ -Ttext 0x1000 --oformat binary -melf_i386 $^
clean:
	rm *.bin *.o *.img

.PHONY: all clean