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 18 LDFLAGS_UNWIND = --eh-frame-hdr 19 RUSTFLAGS_UNWIND = -Cforce-unwind-tables -Clink-arg=-Wl,eh_frame.ld 20endif 21 22RUSTFLAGS += $(RUSTFLAGS_UNWIND) 23 24CFLAGS = $(GLOBAL_CFLAGS) -fno-pie $(CFLAGS_UNWIND) -I $(shell pwd) -I $(shell pwd)/include 25 26ifeq ($(ARCH), x86_64) 27 CFLAGS += -I $(shell pwd)/arch/x86_64/include 28else ifeq ($(ARCH), riscv64) 29 CFLAGS += -I $(shell pwd)/arch/riscv64/include -I $(shell pwd)/arch/riscv64/ 30endif 31 32export ASFLAGS := --64 33 34LD_LIST := "" 35 36 37kernel_subdirs := debug 38 39 40kernel_rust: 41 RUSTFLAGS="$(RUSTFLAGS)" cargo +nightly-2024-11-05 $(CARGO_ZBUILD) build --release --target $(TARGET_JSON) 42 43 44all: kernel 45 46# if x86_64 47ifeq ($(ARCH), x86_64) 48 $(MAKE) __link_x86_64_kernel 49else ifeq ($(ARCH), riscv64) 50 $(MAKE) __link_riscv64_kernel 51endif 52 53 @echo "Kernel Build Done." 54 55ECHO: 56 @echo "$@" 57 58$(kernel_subdirs): ECHO 59 $(MAKE) -C $@ all CFLAGS="$(CFLAGS)" ASFLAGS="$(ASFLAGS)" kernel_root_path="$(shell pwd)" 60 61kernel: $(kernel_subdirs) kernel_rust 62 63__link_riscv64_kernel: 64 @echo "Linking kernel..." 65 $(LD) -b elf64-littleriscv -z muldefs $(LDFLAGS_UNWIND) -o kernel $(shell find . -name "*.o") ../target/riscv64gc-unknown-none-elf/release/libdragonos_kernel.a -T arch/riscv64/link.ld --no-relax 66 # 生成kallsyms 67 current_dir=$(pwd) 68 69 @dbg='debug';for x in $$dbg; do \ 70 cd $$x;\ 71 $(MAKE) generate_kallsyms kernel_root_path="$(shell pwd)"||exit 1;\ 72 cd ..;\ 73 done 74 75# 重新链接 76 @echo "Re-Linking kernel..." 77 @echo $(shell find . -name "*.o") 78 $(LD) -b elf64-littleriscv -z muldefs $(LDFLAGS_UNWIND) -o kernel $(shell find . -name "*.o") ../target/riscv64gc-unknown-none-elf/release/libdragonos_kernel.a ./debug/kallsyms.o -T arch/riscv64/link.ld --no-relax 79 @echo "Generating kernel ELF file..." 80 81ifeq ($(UNWIND_ENABLE), yes) 82 $(OBJCOPY) -I elf64-littleriscv -O elf64-littleriscv kernel ../../bin/kernel/kernel.elf 83else 84 $(OBJCOPY) -I elf64-littleriscv -O elf64-littleriscv -R ".eh_frame" kernel ../../bin/kernel/kernel.elf 85endif 86 @rm kernel 87 $(MAKE) __dragon_stub PAYLOAD_ELF="$(shell pwd)/../../bin/kernel/kernel.elf" 88 89 90 91__link_x86_64_kernel: 92 @echo "Linking kernel..." 93 $(LD) -b elf64-x86-64 -z muldefs $(LDFLAGS_UNWIND) -o kernel $(shell find . -name "*.o") ../target/x86_64-unknown-none/release/libdragonos_kernel.a -T arch/x86_64/link.lds --no-relax 94# 生成kallsyms 95 current_dir=$(pwd) 96 97 @dbg='debug';for x in $$dbg; do \ 98 cd $$x;\ 99 $(MAKE) generate_kallsyms kernel_root_path="$(shell pwd)"||exit 1;\ 100 cd ..;\ 101 done 102 103# 重新链接 104 @echo "Re-Linking kernel..." 105 @echo $(shell find . -name "*.o") 106 $(LD) -b elf64-x86-64 -z muldefs $(LDFLAGS_UNWIND) -o kernel $(shell find . -name "*.o") ../target/x86_64-unknown-none/release/libdragonos_kernel.a ./debug/kallsyms.o -T arch/x86_64/link.lds --no-relax 107 @echo "Generating kernel ELF file..." 108# 生成内核文件 109ifeq ($(UNWIND_ENABLE), yes) 110 $(OBJCOPY) -I elf64-x86-64 -O elf64-x86-64 kernel ../../bin/kernel/kernel.elf 111else 112 $(OBJCOPY) -I elf64-x86-64 -O elf64-x86-64 -R ".eh_frame" kernel ../../bin/kernel/kernel.elf 113endif 114 rm kernel 115 116__dragon_stub: 117 @echo "Linking dragon_stub..." 118 @mkdir -p $(ROOT_PATH)/bin/sysroot 119 PAYLOAD_ELF=$(PAYLOAD_ELF) TARGET_SYSROOT=$(ROOT_PATH)/bin/sysroot $(MAKE) -C $(ROOT_PATH)/kernel/submodules/DragonStub install -j $(NPROCS) 120 121 122clean: 123 @cargo clean 124 rm -rf $(GARBAGE) 125 @list='$(kernel_subdirs)'; for subdir in $$list; do \ 126 echo "Clean in dir: $$subdir";\ 127 cd $$subdir && $(MAKE) clean;\ 128 cd .. ;\ 129 done 130