initial commit

makefile

@@ -0,0 +1,42 @@
+CC = i686-elf-gcc
+LD = i686-elf-ld
+OBJCOPY = i686-elf-objcopy
+
+CFLAGS = -m32 -ffreestanding -O2 -Wall -Wextra -nostdlib
+ASFLAGS = -m32
+
+.PHONY: all clean run
+
+all: os.img
+
+boot.o: boot.s 
+	$(CC) $(ASFLAGS) -c boot.s -o boot.o
+
+boot.elf: boot.o boot.ld 
+	$(LD) -T boot.ld -o boot.elf boot.o
+
+boot.bin: boot.elf 
+	$(OBJCOPY) -O binary boot.elf boot.bin
+
+prekernel.o: prekernel.s
+	$(CC) $(ASFLAGS) -c prekernel.s -o prekernel.o
+
+kmain.o: kmain.c
+	$(CC) $(CFLAGS) -c kmain.c -o kmain.o
+
+kernel.elf: prekernel.o kmain.o kernel.ld
+	$(LD) -T kernel.ld -o kernel.elf prekernel.o kmain.o
+
+kernel.bin: kernel.elf
+	$(OBJCOPY) -O binary kernel.elf kernel.bin
+
+os.img: boot.bin kernel.bin
+	dd if=boot.bin of=os.img bs=512 count=1
+	dd if=kernel.bin of=os.img bs=512 seek=1
+	truncate -s 1440k os.img
+
+run: os.img
+	qemu-system-i386 -drive format=raw,file=os.img
+
+clean: 
+	rm -f *.o *.elf *.bin os.img