ATT = $(SRC:.c=.att)
BIN = $(SRC:.c=.bin)
SRC = $(wildcard *.c)

all: $(ATT) qemu

clean:
	-killall -q qemu-system-i386 || true
	-rm -fv $(ATT) $(BIN) *~

debug: clean qemu
	gdb $(BIN) \
	    -ex 'target remote 127.0.0.1:1234' \
	    -ex 'set architecture i8086' \
	    -ex 'layout asm' \
	    -ex 'layout regs' \
	    -ex 'b *0x7c00' \
	    -ex 'c'

qemu: $(BIN)
	-killall -q qemu-system-i386 || true
	qemu-system-i386 -fda $< -s &> /dev/null &

%.att: %.bin
	objdump -b binary -D -m i8086 $< > $@

%.bin: %.c
	gcc -g -Og -I. -m32 -ffreestanding -nostdlib -o $@ -static -Wall -Werror -Wl,--nmagic -Wl,-Tlinker.ld $<

.PHONY: all clean debug qemu