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arch ?= x86_64
kernel := build/kernel-$(arch).bin
iso := build/os-$(arch).iso
linker_script := arch/$(arch)/boot/linker.ld
grub_cfg := arch/$(arch)/boot/grub.cfg
assembly_source_files := $(wildcard arch/$(arch)/boot/*.asm)
assembly_object_files := $(patsubst arch/$(arch)/boot/%.asm, \
build/arch/$(arch)/%.o, $(assembly_source_files))
dats_source_files := $(wildcard kernel/*.dats)
dats_object_files := $(patsubst kernel/%.dats, \
build/kernel/%_dats.o, $(dats_source_files))
PATSCC=patscc
INCLUDE_ATS :=
INCLUDE_ATS += -I${PATSHOME}
INCLUDE_ATS += -I${PATSHOME}/ccomp/runtime
CLFAGS_ATS :=
CFLAGS_ATS += -D_ATS_CCOMP_RUNTIME_NONE_
CFLAGS_ATS += -D_ATS_CCOMP_EXCEPTION_NONE_
CFLAGS=-ffreestanding -mcmodel=large -mno-red-zone -mno-mmx -mno-sse -mno-sse2 -m64
.PHONY: all clean run iso
all: $(kernel)
clean:
@rm -r build
run: $(iso)
@qemu-system-x86_64 -cdrom $(iso)
iso: $(iso)
$(iso): $(kernel) $(grub_cfg)
@mkdir -p build/isofiles/boot/grub
@cp $(kernel) build/isofiles/boot/kernel.bin
@cp $(grub_cfg) build/isofiles/boot/grub
@grub-mkrescue -o $(iso) build/isofiles 2> /dev/null
@rm -r build/isofiles
$(kernel): $(assembly_object_files) $(linker_script) $(dats_object_files)
@ld -n -T $(linker_script) -o $(kernel) $(assembly_object_files) $(dats_object_files) -nostdlib -z noexecstack
# compile assembly files
build/arch/$(arch)/%.o: arch/$(arch)/boot/%.asm
@mkdir -p $(shell dirname $@)
@nasm -felf64 $< -o $@
build/kernel/%_dats.c: $(dats_source_files)
@mkdir -p $(shell dirname $@)
$(PATSCC) -ccats - $<
@mv *_dats.c build/kernel/
build/kernel/%.o: build/kernel/%.c
@mkdir -p $(shell dirname $@)
$(CC) $(INCLUDE_ATS) $(CFLAGS) $(CFLAGS_ATS) -O2 -c $< -o $@
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