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qemu: floppy
qemu-system-i386 out/floppy.img
floppy: kernel boot
mkdir -p obj out
/sbin/mkfs.fat -C -R 17 -n "PORTLAND OS" obj/shadow.img 1440
echo -n -e '\xeb\x3c' > obj/jmp.bin
dd if=obj/jmp.bin of=obj/shadow.img obs=2 conv=notrunc
dd if=out/boot.bin of=obj/shadow.img obs=1 seek=62 conv=notrunc
dd if=out/kernel.bin of=obj/shadow.img seek=1 conv=notrunc
mv obj/shadow.img out/floppy.img
kernel:
mkdir -p obj/kernel out
gcc -m32 -ffreestanding -c src/kernel/main.c -o obj/kernel/main.o
gcc -m32 -ffreestanding -c src/kernel/vga.c -o obj/kernel/vga.o
ld -T src/kernel/link.ld obj/kernel/main.o obj/kernel/vga.o -o out/kernel.bin
boot:
mkdir -p out
nasm src/boot.asm -o out/boot.bin
clean:
rm -r obj out
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