DOS-like OS for Intel 8086 / NEC V30
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90 lines
2.0 KiB

PROGRAMS = hello.com
KERNEL = @rdos.com
DISTFILES = $(KERNEL) $(PROGRAMS)
ROMS =
QEMU = qemu-system-i386
QEMU_ARGS = $(addprefix --option-rom ,$(ROMS))
VERSION = $(shell git log -1 --format=%cd --date=format:%Y%m%d)
PRODUCT = rdos
LABEL = $(PRODUCT) $(VERSION)
NASM = nasm
NASM_ARGS = -s -Ilib -DPRODUCT=$(PRODUCT) -DVERSION=$(VERSION)
QEMU_ARGS += $(shell test -w /dev/kvm && echo --enable-kvm)
ifdef DEBUG
ROMS += dprintf.rom
NASM_ARGS += -l $(basename $@).lst -DDEBUG=1
endif
ifndef DISPLAY
QEMU_ARGS += --display curses
endif
SYS = host/sys.elf
FIXROM = host/fix-rom.elf
.PHONY: default clean qemu-floppy5 qemu-floppy3
.PRECIOUS: $(DISTFILES)
default: fd1440.img
# Host utils
host/%.elf: host/%.c
$(CC) -o $@ $<
# COM programs
%.com: com/%.asm
$(NASM) $(NASM_ARGS) -o $@ $<
# Bootloaders, first sector on partition
%.bs: boot/%.asm
$(NASM) $(NASM_ARGS) -o $@ $<
@rdos.com: kernel/*.asm
# Special case: variations of FAT vbr
fat1.bs: boot/fat.asm
$(NASM) $(NASM_ARGS) -DFAT12 -DCHS -o $@ $<
fat4.bs: boot/fat.asm
$(NASM) $(NASM_ARGS) -DFAT16 -DCHS -o $@ $<
fat6.bs: boot/fat.asm
$(NASM) $(NASM_ARGS) -DFAT16 -DCHS -DLARGE -o $@ $<
# BIOS option roms
%.rom: rom/%.asm $(FIXROM)
$(NASM) $(NASM_ARGS) -o $@ $< && $(FIXROM) $@
fd%.img: $(DISTFILES) $(SYS)
mformat -C -i $@ -f $* -c 2 -v "$(LABEL)" ::
mcopy -i $@ $(DISTFILES) ::
$(SYS) $@ $(KERNEL)
hdd.img: mbr.bs $(KERNEL) fd1440.img
dd if=mbr.bs bs=512 count=1 of=$@
dd if=$(KERNEL) bs=512 seek=1 of=$@
dd if=fd1440.img bs=512 seek=63 of=$@
clean:
rm -f *.com *.bs *.0 *.lst *.img *.bin *.rom
rm -f host/*.elf
qemu-floppy3: fd1440.img $(ROMS)
$(QEMU) $(QEMU_ARGS) -boot a -fda fd1440.img
qemu-floppy5: fd360.img $(ROMS)
$(QEMU) $(QEMU_ARGS) -boot a -fda fd360.img
qemu-hdd: hdd.img $(ROMS)
$(QEMU) $(QEMU_ARGS) -boot c -hda hdd.img
qemu-uartctrl: uartctrl.rom chartab.bs
$(QEMU) $(QEMU_ARGS) -option-rom uartctrl.rom -serial stdio -hda chartab.bs
dosbox-%: %.com
dosbox -c "mount P $(CURDIR)" -c "P:" -c "$< $(ARGS)"