# TODO think about how to split this up

MIPS_BINUTILS := mips-linux-gnu-

AS := $(MIPS_BINUTILS)as
LD := $(MIPS_BINUTILS)ld

#QEMU_IRIX := ~/irixemu/mips-linux-user/qemu-mips
QEMU_IRIX := ~/qemu-irix
IRIX_71_ROOT := ./ido/71/
IRIX_62_ROOT := ./ido/62/
IRIX_53_ROOT := ./ido/53_patched/

CFLAGS := -G 0 -non_shared -Xfullwarn -Xcpluscomm
ASFLAGS := -march=vr4300 -32

MIPS_VERSION := -mips2
OPTIMIZATION := -O2 -g3

build/src/libultra/os/%: OPTIMIZATION := -O1
build/src/libultra/io/%: OPTIMIZATION := -O2
build/src/libultra/libc/%: OPTIMIZATION := -O2
build/src/libultra/gu/%: OPTIMIZATION := -O2
build/src/libultra/%: CC := $(QEMU_IRIX) -L $(IRIX_53_ROOT) $(IRIX_53_ROOT)/usr/bin/cc
build/src/libultra/%: CFLAGS := $(CFLAGS) -Wab,-r4300_mul
build/src/boot_O1/%: OPTIMIZATION := -O1
build/src/boot_O2_g3/%: OPTIMIZATION := -O2 -g3
build/src/code/%: CFLAGS := $(CFLAGS) -Wab,-r4300_mul
test.txt: OPTIMIZATION := -O2 -g3
test.txt: CC := $(QEMU_IRIX) -L $(IRIX_71_ROOT) $(IRIX_71_ROOT)/usr/bin/cc
test.txt: CFLAGS := $(CFLAGS) -Wab,-r4300_mul

CC := $(QEMU_IRIX) -L $(IRIX_71_ROOT) $(IRIX_71_ROOT)/usr/bin/cc

test.txt: CC := python3 preprocess.py $(CC) -- $(AS) $(ASFLAGS) --
build/src/boot_O2_g3/%: CC := python3 preprocess.py $(CC) -- $(AS) $(ASFLAGS) --
build/src/code/%: CC := python3 preprocess.py $(CC) -- $(AS) $(ASFLAGS) --

BASEROM_FILES := $(wildcard baserom/*)
# Exclude dmadata, it will be generated right before packing the rom
BASEROM_FILES := $(subst baserom/dmadata ,,$(BASEROM_FILES))
BASEROM_BUILD_FILES := $(BASEROM_FILES:baserom/%=build/baserom/%)

DECOMP_FILES := $(wildcard decomp/*)
COMP_FILES := $(DECOMP_FILES:decomp/%=build/comp/%.yaz0)

S_FILES := $(wildcard asm/*)
S_O_FILES = $(S_FILES:asm/%.asm=build/asm/%.o)
C_FILES := $(wildcard src/libultra/*) \
           $(wildcard src/libultra/os/*) \
           $(wildcard src/libultra/io/*) \
           $(wildcard src/libultra/libc/*) \
           $(wildcard src/libultra/gu/*) \
           $(wildcard src/code/*) \
           $(wildcard src/boot_O2_g3/*) \
           $(wildcard src/boot_O1/*)
C_O_FILES = $(C_FILES:src/%.c=build/src/%.o)
ROM_FILES := $(shell cat makerom_files.txt)


ROM := rom.z64

# make build directories
$(shell mkdir -p build/asm)
$(shell mkdir -p build/baserom)
$(shell mkdir -p build/comp)
$(shell mkdir -p build/src)
$(shell mkdir -p build/src/libultra)
$(shell mkdir -p build/src/libultra/os)
$(shell mkdir -p build/src/libultra/io)
$(shell mkdir -p build/src/libultra/libc)
$(shell mkdir -p build/src/libultra/gu)
$(shell mkdir -p build/src/code)
$(shell mkdir -p build/src/boot_O2_g3)
$(shell mkdir -p build/src/boot_O1)

check: $(ROM)
	@md5sum -c checksum.md5

$(ROM): $(ROM_FILES)
	@python3 makerom.py

boot.bin: code.elf
	$(MIPS_BINUTILS)objcopy --dump-section boot=$@ $<

code.bin: code.elf
	$(MIPS_BINUTILS)objcopy --dump-section code=$@ $<

code.elf: $(S_O_FILES) $(C_O_FILES) codescript.txt undef.txt
	$(LD) -T codescript.txt -T undef.txt --no-check-sections --accept-unknown-input-arch -o $@

test.txt: build/src/test.o
	$(MIPS_BINUTILS)objdump -d -z --adjust-vma=0x80080790 $< > test.txt

clean:
	rm $(ROM) code.elf code.bin boot.bin -r build

build/baserom/dmadata: $(COMP_FILES) $(BASEROM_BUILD_FILES)
	python3 dmadata.py

build/baserom/boot: boot.bin
	cp $< $@

build/comp/code.yaz0: code.bin
	python3 yaz0.py -i $< -o $@

disasm:
	@python3 ./tools/disasm.py -d ./asm -e ./include -u . -l ./tables/files.py -f ./tables/functions.py -o ./tables/objects.py -v ./tables/variables.py
	@while read -r file; do \
		python3 ./tools/split_asm.py ./asm/$$file.asm ./asm/nonmatching/$$file; \
	done < ./tables/files_with_nonmatching.txt

# Recipes

build/baserom/%: baserom/%
	cp $< $@

build/asm/%.o: asm/%.asm
	$(AS) $(ASFLAGS) $^ -o $@

build/src/%.o: src/%.c include/*
	$(CC) -c $(CFLAGS) $(MIPS_VERSION) $(OPTIMIZATION) -Iinclude -o $@ $<

build/comp/%.yaz0: decomp/%
	python3 yaz0.py -i $< -o $@