1 .SUFFIXES: .asm .o
2 LDFLAGS = -s --no-pie
3 
4 OBJ = loader.o kernel.o floppy.o
5 IMG = sys.img
6 
7 
8 all: ${IMG}
9 
10 xxd: ${IMG}
11 	xxd ${IMG} | less
12 
13 clean:
14 	rm -f *.o *.elf *.bin *.img
15 
16 run: ${IMG}
17 	qemu-system-i386 -M pc -m 1M -fda ${IMG}
18 
19 floppy1440.img: sys.bin
20 	cat sys.bin /dev/zero | dd of=floppy1440.img bs=512 count=2880
21 
22 sys.img: sys.bin
23 	cat sys.bin /dev/zero | dd of=sys.img bs=512 count=128
24 
25 sys.bin: sys.elf
26 	objcopy -O binary sys.elf sys.bin
27 
28 sys.elf: linker.ld ${OBJ}
29 	ld -o $@ -T linker.ld ${OBJ} ${LDFLAGS}
30 
31 user.bin: user.asm
32 	nasm -fbin -o $@ user.asm
33 
34 .asm.o:
35 	nasm -felf32 -o $@ $<
36 
37 kernel.o: user.bin
38