117 lines
3.2 KiB
Makefile
117 lines
3.2 KiB
Makefile
# TOOLPREFIX = riscv64-linux-gnu
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# TOOLPREFIX = toolchain/xpack-riscv-none-elf-gcc-14.2.0-3/bin/riscv-none-elf
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TOOLPREFIX = toolchain/gcc/bin/riscv-none-elf
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CC = $(TOOLPREFIX)-gcc
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AS = $(TOOLPREFIX)-as
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LD = $(TOOLPREFIX)-ld
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OBJCOPY = $(TOOLPREFIX)-objcopy
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OBJDUMP = $(TOOLPREFIX)-objdump
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ASFLAGS = -march=rv64gc -mabi=lp64
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LDFLAGS = -Tkernel.ld
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LDFLAGS += -m elf64lriscv
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CFLAGS = -Wall -Werror -O
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CFLAGS += -Wno-unused-result
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CFLAGS += -mcmodel=medany
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CFLAGS += -march=rv64gc -mabi=lp64
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CFLAGS += -ffreestanding -fno-common -nostdlib -mno-relax
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CFLAGS += -fno-stack-protector # Prevents code that needs libc / runtime support
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CFLAGS += -MD # Generate header dependency files (.d)
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CFLAGS += -fno-pie -no-pie # Fixed address linking
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CFLAGS += -ggdb -gdwarf-2 # GDB debug info
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CFLAGS += -fno-omit-frame-pointer # More reliable backtraces in GDB
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KCFLAGS += $(CGFLAGS)
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KCFLAGS += -DNEPTUNE_KERNEL
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KCFLAGS += -Ikern
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KCFLAGS += -Ikern/libkern
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KCFLAGS += -I.
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CFLAGS += -I.
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CFLAGS += -Ilib
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all: kernel.elf
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main: main.o
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kernel.elf: entry.o start.o kern/libkern/string.o kern/libkern/proc.o kern/libkern/uart.o kern/libkern/panic.o kern/kalloc.o kern/libkern/memory.o kern/ispinlock.o kern/libkern/spinlock.o kern/libkern/string.o kern/libkern/mini-printf.o
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@echo LD $@
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@$(LD) $(LDFLAGS) -o $@ $^
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%.o: %.c
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@echo CC $@
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@$(CC) $(KCFLAGS) -nostdinc -I. -c $< -o $@
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%.o: %.S
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@echo AS $@
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@$(AS) $(ASFLAGS) -o $@ $<
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qemu: kernel.elf
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@echo QEMU $<
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@qemu-system-riscv64 -machine virt -bios none -nographic -m 128M -smp 4 -kernel kernel.elf
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clean:
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rm -f *.o *.elf *.d lib/*.o lib/*.d
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fd -e o -x rm # TODO: Should only depend on posix
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-include *.d
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# --------------------------------------------------------------------
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# Toolchain configuration
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# --------------------------------------------------------------------
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TOOLCHAIN_DIR := toolchain
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# Versions
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QEMU_VER := 8.2.6-1
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GCC_VER := 14.2.0-3
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# Filenames
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QEMU_TARBALL := xpack-qemu-riscv-$(QEMU_VER)-linux-arm.tar.gz
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GCC_TARBALL := xpack-riscv-none-elf-gcc-$(GCC_VER)-linux-arm.tar.gz
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# URLs
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QEMU_URL := https://github.com/xpack-dev-tools/qemu-riscv-xpack/releases/download/v$(QEMU_VER)/$(QEMU_TARBALL)
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GCC_URL := https://github.com/xpack-dev-tools/riscv-none-elf-gcc-xpack/releases/download/v$(GCC_VER)/$(GCC_TARBALL)
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# Paths
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QEMU_TARPATH := toolchain/xpack-qemu-riscv-8.2.6-1-linux-arm.tar.gz
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GCC_TARPATH := toolchain/xpack-riscv-none-elf-gcc-14.2.0-3-linux-arm.tar.gz
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# Extracted directories
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QEMU_DIR := $(TOOLCHAIN_DIR)/xpack-qemu-riscv-$(QEMU_VER)
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GCC_DIR := $(TOOLCHAIN_DIR)/xpack-riscv-none-elf-gcc-$(GCC_VER)
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# Symlink targets
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QEMU_SYM_DIR := xpack-qemu-riscv-$(QEMU_VER)
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GCC_SYM_DIR := xpack-riscv-none-elf-gcc-$(GCC_VER)
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# Final symlink/alias
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GCC_ALIAS := gcc
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QEMU_ALIAS := qemu
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QEMU_TARPATH:
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curl -# -L -o $@ $(QEMU_URL)
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GCC_TARPATH:
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curl -# -L -o $@ $(GCC_URL)
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extractions:
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cd toolchain && tar xf $(QEMU_TARBALL)
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cd toolchain && tar xf $(GCC_TARBALL)
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toolchain: $(QEMU_TARPATH) $(GCC_TARPATH)
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mkdir -p toolchain
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cd toolchain && tar xf $(QEMU_TARBALL)
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cd toolchain && tar xf $(GCC_TARBALL)
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cd $(TOOLCHAIN_DIR) && ln -sfn $(QEMU_SYM_DIR) $(QEMU_ALIAS)
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cd $(TOOLCHAIN_DIR) && ln -sfn $(GCC_SYM_DIR) $(GCC_ALIAS)
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distclean: clean
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rm -rf $(TOOLCHAIN_DIR)
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.PHONY: all toolchain
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