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NASM = nasm
QEMU = qemu-system-x86_64
CXX = x86_64-elf-g++
OBJCOPY = x86_64-elf-objcopy
CXXFLAGS = -std=gnu++17 \
-ffreestanding -fno-exceptions -fno-rtti \
-fno-pie -no-pie \
-mno-red-zone -mno-mmx -mno-sse -mno-sse2 -mno-avx -mno-avx2 \
-O2 -Wall -Wextra \
-Isrc -Isrc/kernel
LDFLAGS = -nostdlib -Wl,-T,linker.ld
BUILD_DIR = build
SRC_DIR = src
BOOT_DIR = $(SRC_DIR)/boot
KERNEL_DIR = $(SRC_DIR)/kernel
ARCH_DIR = $(KERNEL_DIR)/arch/x86_64
MM_DIR = $(KERNEL_DIR)/mm
LIBK_DIR = $(KERNEL_DIR)/libk
DRV_DIR = $(KERNEL_DIR)/drivers
INP_DIR = $(DRV_DIR)/input
GFX_DIR = $(KERNEL_DIR)/gfx
IPC_DIR = $(KERNEL_DIR)/ipc
STO_DIR = $(DRV_DIR)/storage
# ============================================================
# Kernel Objects
# ============================================================
KERNEL_OBJS = \
$(BUILD_DIR)/kernel_entry.o \
$(BUILD_DIR)/tss.o \
$(BUILD_DIR)/gdt.o \
$(BUILD_DIR)/gdt64.o \
$(BUILD_DIR)/stacks.o \
$(BUILD_DIR)/isr.o \
$(BUILD_DIR)/idt.o \
$(BUILD_DIR)/interrupt.o \
$(BUILD_DIR)/pic.o \
$(BUILD_DIR)/serial.o \
$(BUILD_DIR)/kernel.o \
$(BUILD_DIR)/panic.o \
$(BUILD_DIR)/syscall_entry.o \
$(BUILD_DIR)/syscall_init.o \
$(BUILD_DIR)/syscall.o \
$(BUILD_DIR)/sys_write.o \
$(BUILD_DIR)/sys_exit.o \
$(BUILD_DIR)/memory_manager.o \
$(BUILD_DIR)/vmm.o \
$(BUILD_DIR)/heap.o \
$(BUILD_DIR)/memory.o \
$(BUILD_DIR)/string.o \
$(BUILD_DIR)/kprint.o \
$(BUILD_DIR)/new.o \
$(BUILD_DIR)/kdm.o \
$(BUILD_DIR)/pci.o \
$(BUILD_DIR)/ps2.o \
$(BUILD_DIR)/ps2_kb.o \
$(BUILD_DIR)/ps2_mouse.o \
$(BUILD_DIR)/graphics.o \
$(BUILD_DIR)/ahci.o \
# ============================================================
# Targets
# ============================================================
all: $(BUILD_DIR)/disk.img
$(BUILD_DIR):
mkdir -p $(BUILD_DIR)
# ---------------- BOOT ----------------
$(BUILD_DIR)/stage1.bin: $(BOOT_DIR)/stage1.asm | $(BUILD_DIR)
$(NASM) -f bin $< -o $@
$(BUILD_DIR)/stage2.bin: $(BOOT_DIR)/stage2.asm | $(BUILD_DIR)
$(NASM) -f bin $< -o $@
# ---------------- ARCH ----------------
$(BUILD_DIR)/kernel_entry.o: $(ARCH_DIR)/kernel_entry.asm | $(BUILD_DIR)
$(NASM) -f elf64 $< -o $@
$(BUILD_DIR)/tss.o: $(ARCH_DIR)/tss.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/gdt.o: $(ARCH_DIR)/gdt.asm | $(BUILD_DIR)
$(NASM) -f elf64 $< -o $@
$(BUILD_DIR)/isr.o: $(ARCH_DIR)/isr.asm | $(BUILD_DIR)
$(NASM) -f elf64 $< -o $@
$(BUILD_DIR)/gdt64.o: $(ARCH_DIR)/gdt.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/stacks.o: $(ARCH_DIR)/stacks.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/interrupt.o: $(ARCH_DIR)/interrupt.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/idt.o: $(ARCH_DIR)/idt.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/pic.o: $(ARCH_DIR)/pic.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/serial.o: $(ARCH_DIR)/serial.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/syscall_entry.o: $(ARCH_DIR)/syscall_entry.asm | $(BUILD_DIR)
$(NASM) -f elf64 $< -o $@
$(BUILD_DIR)/syscall_init.o: $(ARCH_DIR)/syscall_init.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
# ---------------- IPC (SYSCALLS) ----------------
$(BUILD_DIR)/syscall.o: $(IPC_DIR)/syscall.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/sys_write.o: $(IPC_DIR)/sys_write.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/sys_exit.o: $(IPC_DIR)/sys_exit.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
# ---------------- KERNEL ----------------
$(BUILD_DIR)/kernel.o: $(KERNEL_DIR)/kernel.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/panic.o: $(KERNEL_DIR)/panic.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
# ---------------- MM ----------------
$(BUILD_DIR)/memory_manager.o: $(MM_DIR)/memory_manager.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/vmm.o: $(MM_DIR)/vmm.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/heap.o: $(MM_DIR)/heap.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
# ---------------- LIBK ----------------
$(BUILD_DIR)/memory.o: $(LIBK_DIR)/memory.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/string.o: $(LIBK_DIR)/string.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/kprint.o: $(LIBK_DIR)/kprint.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/new.o: $(LIBK_DIR)/new.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
# ---------------- DRIVERS ----------------
$(BUILD_DIR)/kdm.o: $(DRV_DIR)/kdm.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/pci.o: $(DRV_DIR)/pci.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/ps2.o: $(INP_DIR)/ps2.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/ps2_kb.o: $(INP_DIR)/ps2_kb.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/ps2_mouse.o: $(INP_DIR)/ps2_mouse.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
$(BUILD_DIR)/ahci.o: $(STO_DIR)/ahci/ahci.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
# ---------------- GFX ----------------
$(BUILD_DIR)/graphics.o: $(GFX_DIR)/graphics.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
# ---------------- LINK ----------------
$(BUILD_DIR)/kernel.elf: $(KERNEL_OBJS)
$(CXX) $(CXXFLAGS) $(LDFLAGS) $(KERNEL_OBJS) -lgcc -o $@
$(BUILD_DIR)/kernel.bin: $(BUILD_DIR)/kernel.elf
$(OBJCOPY) -O binary $< $@
$(BUILD_DIR)/disk.img: $(BUILD_DIR)/stage1.bin $(BUILD_DIR)/stage2.bin $(BUILD_DIR)/kernel.bin
dd if=/dev/zero of=$@ bs=1M count=512 status=none
dd if=$(BUILD_DIR)/stage1.bin of=$@ conv=notrunc bs=512 count=1 status=none
dd if=$(BUILD_DIR)/stage2.bin of=$@ conv=notrunc bs=512 seek=1 status=none
dd if=$(BUILD_DIR)/kernel.bin of=$@ conv=notrunc bs=512 seek=33 status=none
run: all
$(QEMU) \
-machine q35 \
-m 2G \
-serial stdio \
-vga std \
-device ich9-ahci,id=ahci \
-drive id=disk,file=build/disk.img,format=raw,if=none \
-device ide-hd,drive=disk,bus=ahci.0
clean:
rm -rf $(BUILD_DIR)
.PHONY: all run clean