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73 lines
1.9 KiB
Makefile
73 lines
1.9 KiB
Makefile
SUBDIR_ROOTS := .
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DIRS := . $(shell find $(SUBDIR_ROOTS) -type d)
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GARBAGE_PATTERNS := *.o *.s~ *.s *.S~ *.c~ *.h~ kernel
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GARBAGE := $(foreach DIR,$(DIRS),$(addprefix $(DIR)/,$(GARBAGE_PATTERNS)))
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DIR_LIB=lib
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lib_patterns := *.a
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LIB_FILES := $(foreach DIR,$(DIR_LIB),$(addprefix $(DIR)/,$(lib_patterns)))
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# 控制操作系统使用的中断控制器 _INTR_8259A_ _INTR_APIC_
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PIC := _INTR_APIC_
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CFLAGS = $(GLOBAL_CFLAGS) -D $(PIC) -I $(shell pwd)
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export ASFLAGS := --64
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LD_LIST := head.o
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kernel_subdirs := common driver process debug filesystem time arch exception mm smp sched syscall ktest lib ipc
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head.o: head.S
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gcc -E head.S > head.s # 预处理
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as $(ASFLAGS) -o head.o head.s
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main.o: main.c
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# -fno-builtin: 不使用C语言内建函数
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# The -m64 option sets int to 32bits and long and pointer to 64 bits and generates code for AMD’s x86-64 architecture.
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gcc $(CFLAGS) -c main.c -o main.o
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all: kernel
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@echo "Linking kernel..."
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ld -b elf64-x86-64 -z muldefs -o kernel head.o main.o $(shell find . -name "*.o") -T link.lds
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# 生成kallsyms
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current_dir=$(pwd)
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@dbg='debug';for x in $$dbg; do \
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cd $$x;\
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$(MAKE) generate_kallsyms kernel_root_path="$(shell pwd)";\
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cd ..;\
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done
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# 重新链接
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@echo "Re-Linking kernel..."
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ld -b elf64-x86-64 -z muldefs -o kernel head.o main.o $(shell find . -name "*.o") ./debug/kallsyms.o -T link.lds
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@echo "Generating kernel ELF file..."
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# 生成内核文件
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objcopy -I elf64-x86-64 -O elf64-x86-64 -R ".comment" -R ".eh_frame" kernel ../bin/kernel/kernel.elf
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@echo "Done."
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ECHO:
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@echo "$@"
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$(kernel_subdirs): ECHO
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$(MAKE) -C $@ all CFLAGS="$(CFLAGS)" ASFLAGS="$(ASFLAGS)" PIC="$(PIC)" kernel_root_path="$(shell pwd)"
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kernel: head.o main.o $(kernel_subdirs)
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clean:
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rm -rf $(GARBAGE)
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@list='$(kernel_subdirs)'; for subdir in $$list; do \
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echo "Clean in dir: $$subdir";\
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cd $$subdir && $(MAKE) clean;\
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cd .. ;\
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done
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