1SUBDIR_ROOTS := . common 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=lib 7lib_patterns := *.a 8LIB_FILES := $(foreach DIR,$(DIR_LIB),$(addprefix $(DIR)/,$(lib_patterns))) 9 10CFLAGS := -mcmodel=large -fno-builtin -m64 11 12# 控制操作系统使用的中断控制器 _INTR_8259A_ _INTR_APIC_ 13PIC := _INTR_APIC_ 14CFLAGS += -D $(PIC) 15 16ASFLAGS := --64 17 18all: kernel 19 objcopy -I elf64-x86-64 -S -R ".comment" -R ".eh_frame" -O elf64-x86-64 kernel ../bin/kernel/kernel.elf 20# cp kernel ../bin/kernel/kernel.elf 21 22 23kernel: head.o entry.o main.o printk.o trap.o mm.o slab.o irq.o pic.o process.o syscall.o multiboot2.o cpu.o 24 ld -b elf64-x86-64 -z muldefs -o kernel head.o exception/entry.o main.o common/printk.o exception/trap.o exception/irq.o mm/mm.o mm/slab.o process/process.o syscall/syscall.o driver/multiboot2/multiboot2.o \ 25 common/cpu.o \ 26 driver/interrupt/pic.o \ 27 -T link.lds 28 29head.o: head.S 30 gcc -E head.S > head.s # 预处理 31 as $(ASFLAGS) -o head.o head.s 32#gcc -mcmodel=large -fno-builtin -m64 -c head.S -o head.o 33 34entry.o: exception/entry.S 35 gcc -E exception/entry.S > exception/entry.s 36 as $(ASFLAGS) -o exception/entry.o exception/entry.s 37 38 39 40main.o: main.c 41# -fno-builtin: 不使用C语言内建函数 42# The -m64 option sets int to 32bits and long and pointer to 64 bits and generates code for AMD’s x86-64 architecture. 43 gcc $(CFLAGS) -c main.c -o main.o 44 45 46printk.o: common/printk.c 47 gcc $(CFLAGS) -c common/printk.c -o common/printk.o 48 49trap.o: exception/trap.c 50 gcc $(CFLAGS) -c exception/trap.c -o exception/trap.o 51 52irq.o: exception/irq.c 53 gcc $(CFLAGS) -c exception/irq.c -o exception/irq.o 54 55 56 57mm.o: mm/mm.c 58 gcc $(CFLAGS) -c mm/mm.c -o mm/mm.o 59 60slab.o: mm/slab.c 61 gcc $(CFLAGS) -c mm/slab.c -o mm/slab.o 62 63process.o: process/process.c 64 gcc $(CFLAGS) -c process/process.c -o process/process.o 65syscall.o: syscall/syscall.c 66 gcc $(CFLAGS) -c syscall/syscall.c -o syscall/syscall.o 67 68 69 70cpu.o: common/cpu.c 71 gcc $(CFLAGS) -c common/cpu.c -o common/cpu.o 72 73# 驱动程序 74# 中断处理芯片的驱动程序 75ifeq ($(PIC), _INTR_8259A_)) 76pic.o: driver/interrupt/8259A/8259A.c 77 gcc $(CFLAGS) -c driver/interrupt/8259A/8259A.c -o driver/interrupt/pic.o 78else ifeq($(PIC), _INTR_APIC_) 79pic.o: driver/interrupt/apic/apic.c 80 gcc $(CFLAGS) -c driver/interrupt/apic/apic.c -o driver/interrupt/pic.o 81endif 82 83multiboot2.o: driver/multiboot2/multiboot2.c 84 gcc $(CFLAGS) -c driver/multiboot2/multiboot2.c -o driver/multiboot2/multiboot2.o 85 86clean: 87 rm -rf $(GARBAGE)