TARGET := riscv64gc-unknown-none-elf
KERNEL_ENTRY := 0x80200000
MODE := release
KERNEL_ELF := target/$(TARGET)/$(MODE)/os
KERNEL_BIN := $(KERNEL_ELF).bin
QEMU_CMD_PATH := /Users/zhangxinyu/Downloads/qemu-7.0.0/build/qemu-system-riscv64
OBJDUMP := rust-objdump --arch-name=riscv64
OBJCOPY := rust-objcopy --binary-architecture=riscv64

RUST_FLAGS := -Clink-arg=-Tsrc/linker.ld  # 使用我们自己的链接脚本
RUST_FLAGS += -Cforce-frame-pointers=yes  # 强制编译器生成帧指针
RUST_FLAGS:=$(strip ${RUST_FLAGS})

# 编译elf文件
build:
	CARGO_BUILD_RUSTFLAGS="$(RUST_FLAGS)" \
 	cargo build --$(MODE) --target=$(TARGET)

# 丢弃内核可执行elf文件中的元数据得到内核镜像
$(KERNEL_BIN): build
	@$(OBJCOPY) $(KERNEL_ELF) --strip-all -O binary $@


run:build $(KERNEL_BIN)
	$(QEMU_CMD_PATH) \
		-machine virt \
		-nographic \
		-bios ../bootloader/rustsbi-qemu.bin \
		-device loader,file=$(KERNEL_ELF),addr=$(KERNEL_ENTRY) \
		-s -S



clean:
	rm -rf ./target