C_SOURCES = $(wildcard kernel/*.c)

HEADERS = $(wildcard kernel/*.h)

OBJ = ${C_SOURCES:.c=.o}

all: os-image

run: all

qemu-system-x86_64 -fda os-image

os-image: bootstrap.bin kernel.bin

cat $^ > $@

kernel.bin: kernel/kernel_entry.o ${OBJ}

i386-elf-ld -o $@ -Ttext 0x1000 $^ --oformat binary

%.o: %.c ${HEADERS}

i386-elf-gcc -ffreestanding -c $< -o $@

kernel/kernel_entry.o: kernel/kernel_entry.asm

nasm $< -f elf -o $@

bootstrap.bin: boot/bootstrap.asm

nasm $< -f bin -I 'boot/' -o $@

clean:

rm -rf *.bin *.dis *.o os-image

rm -rf kernel/*.o boot/*.bin