1SUBDIR_ROOTS := . 2DIRS := . $(shell find $(SUBDIR_ROOTS) -type d) 3GARBAGE_PATTERNS := *.o *.s~ *.s *.S~ *.c~ *.h~ kernel 4GARBAGE := $(foreach DIR,$(DIRS),$(addprefix $(DIR)/,$(GARBAGE_PATTERNS))) 5 6DIR_LIB=libs 7lib_patterns := *.a 8LIB_FILES := $(foreach DIR,$(DIR_LIB),$(addprefix $(DIR)/,$(lib_patterns))) 9 10 11# unwind/backtrace related 12UNWIND_ENABLE ?= yes 13CFLAGS_UNWIND = 14LDFLAGS_UNWIND = 15RUSTFLAGS_UNWIND = 16ifeq ($(UNWIND_ENABLE), yes) 17 CFLAGS_UNWIND = -funwind-tables 18ifeq ($(ARCH), x86_64) 19 LDFLAGS_UNWIND = --eh-frame-hdr 20 RUSTFLAGS_UNWIND = -Cforce-unwind-tables -Clink-arg=-Wl,eh_frame.ld 21endif 22endif 23 24RUSTFLAGS += $(RUSTFLAGS_UNWIND) 25 26CFLAGS = $(GLOBAL_CFLAGS) -fno-pie $(CFLAGS_UNWIND) -I $(shell pwd) -I $(shell pwd)/include 27 28ifeq ($(ARCH), x86_64) 29 CFLAGS += -I $(shell pwd)/arch/x86_64/include 30else ifeq ($(ARCH), riscv64) 31 CFLAGS += -I $(shell pwd)/arch/riscv64/include -I $(shell pwd)/arch/riscv64/ 32endif 33 34export ASFLAGS := --64 35 36LD_LIST := "" 37 38 39kernel_subdirs := common driver debug syscall libs 40 41 42kernel_rust: 43 RUSTFLAGS="$(RUSTFLAGS)" cargo +nightly-2024-07-23 $(CARGO_ZBUILD) build --release --target $(TARGET_JSON) 44 45 46all: kernel 47 48# if x86_64 49ifeq ($(ARCH), x86_64) 50 $(MAKE) __link_x86_64_kernel 51else ifeq ($(ARCH), riscv64) 52 $(MAKE) __link_riscv64_kernel 53endif 54 55 @echo "Kernel Build Done." 56 57ECHO: 58 @echo "$@" 59 60$(kernel_subdirs): ECHO 61 62 $(MAKE) -C $@ all CFLAGS="$(CFLAGS)" ASFLAGS="$(ASFLAGS)" kernel_root_path="$(shell pwd)" 63 64kernel: $(kernel_subdirs) kernel_rust 65 66__link_riscv64_kernel: 67 @echo "Linking kernel..." 68 $(LD) -b elf64-littleriscv -z muldefs $(LDFLAGS_UNWIND) -o kernel $(shell find . -name "*.o") ../target/riscv64gc-unknown-none-elf/release/libdragonos_kernel.a -T arch/riscv64/link.ld --no-relax 69 $(OBJCOPY) -I elf64-littleriscv -O elf64-littleriscv -R ".eh_frame" kernel ../../bin/kernel/kernel.elf 70 @rm kernel 71 $(MAKE) __dragon_stub PAYLOAD_ELF="$(shell pwd)/../../bin/kernel/kernel.elf" 72 73 74 75__link_x86_64_kernel: 76 @echo "Linking kernel..." 77 $(LD) -b elf64-x86-64 -z muldefs $(LDFLAGS_UNWIND) -o kernel $(shell find . -name "*.o") ../target/x86_64-unknown-none/release/libdragonos_kernel.a -T arch/x86_64/link.lds --no-relax 78# 生成kallsyms 79 current_dir=$(pwd) 80 81 @dbg='debug';for x in $$dbg; do \ 82 cd $$x;\ 83 $(MAKE) generate_kallsyms kernel_root_path="$(shell pwd)"||exit 1;\ 84 cd ..;\ 85 done 86 87# 重新链接 88 @echo "Re-Linking kernel..." 89 @echo $(shell find . -name "*.o") 90 $(LD) -b elf64-x86-64 -z muldefs $(LDFLAGS_UNWIND) -o kernel $(shell find . -name "*.o") ../target/x86_64-unknown-none/release/libdragonos_kernel.a ./debug/kallsyms.o -T arch/x86_64/link.lds --no-relax 91 @echo "Generating kernel ELF file..." 92# 生成内核文件 93ifeq ($(UNWIND_ENABLE), yes) 94 $(OBJCOPY) -I elf64-x86-64 -O elf64-x86-64 kernel ../../bin/kernel/kernel.elf 95else 96 $(OBJCOPY) -I elf64-x86-64 -O elf64-x86-64 -R ".eh_frame" kernel ../../bin/kernel/kernel.elf 97endif 98 rm kernel 99 100__dragon_stub: 101 @echo "Linking dragon_stub..." 102 @mkdir -p $(ROOT_PATH)/bin/sysroot 103 PAYLOAD_ELF=$(PAYLOAD_ELF) TARGET_SYSROOT=$(ROOT_PATH)/bin/sysroot $(MAKE) -C $(ROOT_PATH)/kernel/submodules/DragonStub install -j $(NPROCS) 104 105 106clean: 107 @cargo clean 108 rm -rf $(GARBAGE) 109 @list='$(kernel_subdirs)'; for subdir in $$list; do \ 110 echo "Clean in dir: $$subdir";\ 111 cd $$subdir && $(MAKE) clean;\ 112 cd .. ;\ 113 done 114