ASM := nasm
ASMARGS := -f elf64

LD := x86_64-elf-ld
LDARGS := --nmagic

CARGO_ENV := release
CARGO_EXTRA_ARG := --release

.PHONY = target clean run rustc build debug
default: build

all: build

clean:
	cargo clean

build: target/shade.iso

rustc:
	RUST_TARGET_PATH=$(shell pwd) cargo build -p shadeos-kernel $(CARGO_EXTRA_ARG)

run: target/shade.iso
	qemu-system-x86_64 -cdrom target/shade.iso
debug: target/shade.iso
	qemu-system-x86_64 -cdrom target/shade.iso -s -S

target/shade.iso: target/shade.bin iso/boot/grub/grub.cfg
	cp -r iso target
	cp target/shade.bin target/iso/boot/shade.bin
	cd target
	cd target && grub-mkrescue -o shade.iso iso


target/shade.bin: target/llb/entry32.o target/llb/mb2_header.o rustc
	$(LD) $(LDARGS) --output=target/shade.bin --script=linker.ld target/llb/entry32.o target/llb/mb2_header.o target/x86_64-unknown-shadeos-gnu/$(CARGO_ENV)/libshadeos.a

target/llb.a: target/llb/mb2_header.o target/llb/entry32.o
	mkdir -p target/llb
	ar rvs target/llb.a target/llb/mb2_header.o target/llb/entry32.o

target/llb/mb2_header.o: shadeos-llb/src
	mkdir -p target/llb
	$(ASM) $(ASMARGS) shadeos-llb/src/mb2_header.asm -o target/llb/mb2_header.o
target/llb/entry32.o: shadeos-llb/src
	mkdir -p target/llb
	$(ASM) $(ASMARGS) shadeos-llb/src/entry32.asm -o target/llb/entry32.o