replace build and test scripts with makefile

Author: kiryk

README.md

@@ -12,14 +12,20 @@ So far the kernel uses a flat FAT12 file system and has a built-in command inter
 
 ## Compilation and running
 
-The _build.bat_ script uses:
-- NASM to compile the sources,
-- ImDisk to save binaries on a floppy image.
+To create a disk image:
+```
+make
+sudo make install
+```
+
+To run it:
+```
+make test
+```
 
-The _test.bat_ script uses:
-- QEMU (`qemu-system-i386`) as an emulator for the OS.
+The `nasm` compiler is required for installation and `qemu-system-i386` for testing.
 
-Both scripts should just work and can be used without any arguments.
+`make install` requires root permission level to mount the disk image and copy OS files onto it.
 
 ## Using the shell
 

build.bat

@@ -0,0 +1,38 @@
+IMAGE ?= akeros.img
+
+SYSTEM = \
+	bootloader.sys\
+	kernel.sys
+
+PROGRAMS = \
+	calc.prg
+
+build: $(IMAGE) $(SYSTEM) $(PRORGAMS)
+
+install: $(IMAGE)
+	$(eval DIR := $(shell mktemp -d))
+	mount -o loop $< $(DIR)
+	sleep 0.5
+	cp kernel.sys $(DIR)/
+	cp README.md $(DIR)/
+	cp $(PROGRAMS) $(DIR)/
+	umount $(DIR)
+	rm -r $(DIR)
+
+.PHONY: test
+test:
+	qemu-system-i386 -drive format=raw,file=$(IMAGE),index=0,if=floppy
+
+.PHONY: clean
+clean:
+	rm $(IMAGE) $(SYSTEM) $(PROGRAMS)
+
+$(IMAGE): $(SYSTEM) $(PROGRAMS)
+	dd if=/dev/zero bs=512 count=2880 > $(IMAGE)
+	dd if=bootloader.sys of=$(IMAGE) conv=notrunc
+
+%.sys:
+	nasm -O0 -f bin -o $@ $(@:sys=asm)
+
+%.prg:
+	nasm -O0 -f bin -o $@ $(@:prg=asm)