dev-image = 5150-dev

%.bin: %.asm
	nasm $? -o $@

crc16.s: crc16.c
	ia16-elf-gcc -S -Os -o crc16.s crc16.c

crc16.bin: crc16.s crt0.c
	ia16-elf-gcc -o crc16.bin -Os -nostdlib crc16.s crt0.c

CC = ia16-elf-gcc
CXX = ia16-elf-gcc
LD = ia16-elf-gcc
CXXFLAGS = -mregparmcall -ffunction-sections -Os -flto
CFLAGS = -mregparmcall -ffunction-sections -Os -flto
LDFLAGS = -mregparmcall -Wl,--gc-sections -Os -nostdlib -flto

%.elf:
	$(LD) $(LDFLAGS) $(CPPFLAGS) -o $@ $^

bootsectors = fat12boot.bin wozmon.bin

$(bootsectors):
	ia16-elf-objcopy -O binary $? $@
	truncate -s 510 $@
	printf "\125\252" >> $@

fat12boot.elf: fat12boot.o fat12.o bootsect.S
fat12boot.elf: LDFLAGS += -T bootsect.ld

fat12boot.bin: fat12boot.elf

wozmon.elf: wozmon.o bootsect.S
wozmon.elf: LDFLAGS += -T bootsect.ld
wozmon.elf: CPPFLAGS += -DNOBPB

wozmon.bin: wozmon.elf

.PHONY: clean
clean:			## Remove generated files
	rm -rf wozmon.bin crc16.bin readfloppy.bin writefloppy.bin fat12boot.bin

.PHONY: dev-image
dev-image:
	docker build -t $(dev-image) --target dev .

.PHONY: dev
dev: dev-image	## Launch a dev container
	docker run -it --rm -v $(CURDIR):/workspace $(dev-image)


.PHONY: binaries
binaries:		## Build all binaries
	docker build --build-arg TARGET=readfloppy.bin -o . --target=export .
	docker build --build-arg TARGET=writefloppy.bin -o . --target=export .
	docker build --build-arg TARGET=crc16.bin -o . --target=export .
	docker build --build-arg TARGET=wozmon.bin -o . --target=export .
	docker build --build-arg TARGET=hello.bin -o . --target=export .
	docker build --build-arg TARGET=copy.bin -o . --target=export .
	docker build --build-arg TARGET=call.bin -o . --target=export .
	docker build --build-arg TARGET=debug.bin -o . --target=export .
	docker build --build-arg TARGET=dosdbt.bin -o . --target=export .
	docker build --build-arg TARGET=format.bin -o . --target=export .
	docker build --build-arg TARGET=fat12boot.bin -o . --target=export .


.PHONY: help
help:           ## Show this help
	@echo Noteworthy targets:
	@egrep '^[a-zA-Z_-]+:.*?## .*$$' $(firstword $(MAKEFILE_LIST)) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-20s\033[0m %s\n", $$1, $$2}'
.DEFAULT_GOAL := help