objs := head.o init.o interrupt.o main.otimer.bin: $(objs)	arm-linux-ld -Ttimer.lds -o timer_elf $^	arm-linux-objcopy -O binary -S timer_elf $@	arm-linux-objdump -D -m arm timer_elf > timer.dis	%.o:%.c	arm-linux-gcc -Wall -O2 -c -o $@ $<%.o:%.S	arm-linux-gcc -Wall -O2 -c -o $@ $<clean:	rm -f timer.bin timer_elf timer.dis *.o