Build updates

Makefile

@@ -1,50 +1,66 @@
-ARCHDIR=../arch/i686
+ARCHDIR=arch/i686
 
+CFLAGS?=
 
-CFLAGS=-O2 \
+INCLUDEDIR=include
+
+CFLAGS:=-O2 \
 -std=gnu99 \
 -ffreestanding \
 -Wall -Wextra \
--I $(INCLUDEDIR)
+-I$(INCLUDEDIR) \
+$(CFLAGS)
 
 
-KERNEL_OBJS=kernel.o
+KERNEL_OBJS=kernel/kernel.o
-LIB_OBJS=bootstrap.o \
+LIB_OBJS=\
-tty.o\
+$(ARCHDIR)/bootstrap.o \
-strlib.o\
+$(ARCHDIR)/tty.o\
-interrupt.o
+$(ARCHDIR)/strlib.o\
+$(ARCHDIR)/interrupt.o\
+
 OBJS=$(KERNEL_OBJS) $(LIB_OBJS)
+
 LDFLAGS=$(OBJS) \
 -ffreestanding \
 -O2 \
 -nostdlib \
 -lgcc
 
-
+.SUFFIXES: .c .o .s
-INCLUDEDIR=../include
-
 
 all:
+	$(MAKE) run-grub-qemu
+
+clean:
+	rm -f $(OBJS)
+	rm myos.bin
+	rm myos.iso
+
+debug:
 	mkdir build || true
 	cp Makefile build
-	$(MAKE) -C build test-kernel-qemu
+	cp -r isodir build
+	CFLAGS=-g $(MAKE) -C build debug-grub-qemu
 
-architecture:
+.c.o:
-	i686-elf-as $(ARCHDIR)/bootstrap.s -o bootstrap.o
+	i686-elf-gcc -c $< -o $@ $(CFLAGS)
 
-	i686-elf-gcc -c $(ARCHDIR)/tty.c -o tty.o $(CFLAGS)
+.s.o:
-	i686-elf-gcc -c $(ARCHDIR)/interrupt.c -o interrupt.o $(CFLAGS)
+	i686-elf-as $< -o $@
-	i686-elf-gcc -c $(ARCHDIR)/strlib.c -o strlib.o $(CFLAGS)
 
-kernel:
+myos.bin: $(OBJS)
-	i686-elf-gcc -c ../kernel/kernel.c -o kernel.o $(CFLAGS)
-
-
-myos-bin: architecture kernel
 	i686-elf-gcc -T $(ARCHDIR)/linker.ld -o myos.bin $(LDFLAGS)
-	
 	grub-file --is-x86-multiboot myos.bin
 
-test-kernel-qemu: myos-bin
+run-grub-qemu: myos.bin
-	qemu-system-i386 -kernel myos.bin
+	cp myos.bin isodir/boot/myos.bin
+	grub-mkrescue -o myos.iso isodir
+	qemu-system-i386 myos.iso
+
+debug-grub-qemu: myos.bin
+	cp myos.bin isodir/boot/myos.bin
+	grub-mkrescue -o myos.iso isodir
+	qemu-system-i386 -S -gdb tcp::9000 myos.iso
+
 

isodir/boot/grub/grub.cfg

@@ -0,0 +1,3 @@
+menuentry "myos" {
+	multiboot /boot/myos.bin
+}