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Makefile
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OS = Ubuntu20.4
# indicate the Hardware Image file
HDA_IMG = hdc-0.11.img
IMAGE = Image
# indicate the path of the calltree
CALLTREE=$(shell find tools/ -name "calltree" -perm 755 -type f)
# indicate the path of the bochs
#BOCHS=$(shell find tools/ -name "bochs" -perm 755 -type f)
BOCHS=bochs
#BOCHSG=bochs-gdb
BOCHSG=bochs
#
# if you want the ram-disk device, define this to be the
# size in blocks.
#
RAMDISK = #-DRAMDISK=512
# This is a basic Makefile for setting the general configuration
include Makefile.header
LDFLAGS += -Ttext 0 -e startup_32
CFLAGS += $(RAMDISK) -Iinclude
CPP += -Iinclude
#
# ROOT_DEV specifies the default root-device when making the image.
# This can be either FLOPPY, /dev/xxxx or empty, in which case the
# default of /dev/hd6 is used by 'build'.
#
ROOT_DEV= #FLOPPY
ARCHIVES=kernel/kernel.o mm/mm.o fs/fs.o # kernel目录, mm 目录和fs目录生成的目标代码文件
DRIVERS =kernel/blk_drv/blk_drv.a kernel/chr_drv/chr_drv.a #ar 块设备和字符设备文件.a 静态库
MATH =kernel/math/math.a # 数学运算库文件
LIBS =lib/lib.a # lib通用库文件
# 隐式规则输入.c, 输出.o
.c.s:
@$(CC) $(CFLAGS) -S -o $*.s $<
.s.o:
@$(AS) -o $*.o $<
.c.o:
@$(CC) $(CFLAGS) -c -o $*.o $<
# 创建最顶级的image目标文件
all: Image
# tool/build 将bootsect, setup, system文件 打包成Image磁盘镜像文件, System.map文件映射了变量和地址符号表debug info
Image: boot/bootsect boot/setup tools/system
@cp -f tools/system system.tmp
@$(STRIP) system.tmp
@$(OBJCOPY) -O binary -R .note -R .comment system.tmp tools/kernel
@tools/build.sh boot/bootsect boot/setup tools/kernel Image $(ROOT_DEV)
@rm system.tmp
@rm -f tools/kernel
@sync
disk: Image
@dd bs=8192 if=Image of=/dev/fd0
# 利用上面的.s.o规则生成head.o 目标文件
boot/head.o: boot/head.s
@make head.o -C boot/
tools/system: boot/head.o init/main.o \
$(ARCHIVES) $(DRIVERS) $(MATH) $(LIBS)
@$(LD) $(LDFLAGS) boot/head.o init/main.o \
$(ARCHIVES) \
$(DRIVERS) \
$(MATH) \
$(LIBS) \
-o tools/system
@nm tools/system | grep -v '\(compiled\)\|\(\.o$$\)\|\( [aU] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)'| sort > System.map
kernel/math/math.a:
@make -C kernel/math
kernel/blk_drv/blk_drv.a:
@make -C kernel/blk_drv
kernel/chr_drv/chr_drv.a:
@make -C kernel/chr_drv
kernel/kernel.o:
@make -C kernel
mm/mm.o:
@make -C mm
fs/fs.o:
@make -C fs
lib/lib.a:
@make -C lib
boot/setup: boot/setup.s
@make setup -C boot
boot/bootsect: boot/bootsect.s
@make bootsect -C boot
# 在bootsect.s开头添加一行sysetm文件长度信息
tmp.s: boot/bootsect.s tools/system
@(echo -n "SYSSIZE = (";ls -l tools/system | grep system \
| cut -c25-31 | tr '\012' ' '; echo "+ 15 ) / 16") > tmp.s
@cat boot/bootsect.s >> tmp.s
clean:
@rm -f Image System.map tmp_make core boot/bootsect boot/setup
@rm -f init/*.o tools/system boot/*.o typescript* info bochsout.txt
@for i in mm fs kernel lib boot; do make clean -C $$i; done
info:
@make clean
@script -q -c "make all"
@cat typescript | col -bp | grep -E "warning|Error" > info
@cat info
distclean: clean
@rm -f tag cscope* linux-0.11.* $(CALLTREE)
@(find tools/calltree-2.3 -name "*.o" | xargs -i rm -f {})
@make clean -C tools/calltree-2.3
@make clean -C tools/bochs/bochs-2.3.7
backup: clean
@(cd .. ; tar cf - linux | compress16 - > backup.Z)
@sync
dep:
@sed '/\#\#\# Dependencies/q' < Makefile > tmp_make
@(for i in init/*.c;do echo -n "init/";$(CPP) -M $$i;done) >> tmp_make
@cp tmp_make Makefile
@for i in fs kernel mm; do make dep -C $$i; done
tag: tags
tags:
@ctags -R
cscope:
@cscope -Rbkq
qemu:
@qemu-system-x86_64 -m 16M -boot a -fda Image -hda $(HDA_IMG)
qemug:
@echo $(OS)
@qemu-system-x86_64 -m 16M -boot a -fda Image -hda $(HDA_IMG) -s -S
bochs: $(IMAGE)
$(BOCHS) -q -unlock -f bochsrc
bochsg: $(IMAGE)
@$(BOCHSG) -q -unlock -f bochsrc.gdb
.PHONY: bochsgn
bochsgn: kbochsg $(IMAGE)
@$(BOCHSG) -q -unlock -f bochsrcn.gdb 1>/dev/null 2>&1 &
.PHONY: kbochsg
kbochsg:
ps -ef | grep $(BOCHSG) | grep -v grep | awk '{print $$2}' | xargs -r kill -9
bochs-build:
ifeq ($(BOCHS),)
@(cd tools/bochs/bochs-2.6.11; \
./configure --with-x11 --with-wx --enable-disasm --enable-all-optimizations \
--enable-readline --enable-long-phy-address --enable-ltdl-install \
--enable-idle-hack --enable-plugins --enable-a20-pin --enable-x86-64 \
--enable-cpu-level=6 --enable-large-ramfile --enable-repeat-speedups \
--enable-fast-function-calls --enable-handlers-chaining --enable-trace-linking\
--enable-configurable-msrs --enable-show-ips --enable-debugger-gui \
--enable-iodebug --enable-logging --enable-assert-checks --enable-fpu \
--enable-vmx=2 --enable-svm --enable-3dnow --enable-alignment-check \
--enable-monitor-mwait --enable-avx --enable-evex --enable-x86-debugger \
--enable-pci --enable-usb --enable-voodoo -enable-gdb-stub;\
make)
endif
bochs-clean:
@make clean -C tools/bochs/bochs-2.6.11
calltree:
ifeq ($(CALLTREE),)
@make -C tools/calltree-2.3
endif
calltree-clean:
@(find tools/calltree-2.3 -name "*.o" \
-o -name "calltree" -type f | xargs -i rm -f {})
cg: callgraph
callgraph:
@calltree -b -np -m init/main.c | tools/tree2dotx > linux-0.11.dot
@dot -Tjpg linux-0.11.dot -o linux-0.11.jpg
help:
@echo "<<<<This is the basic help info of linux-0.11>>>"
@echo ""
@echo "Usage:"
@echo " make --generate a kernel floppy Image with a fs on hda1"
@echo " make start -- start the kernel in qemu"
@echo " make debug -- debug the kernel in qemu & gdb at port 1234"
@echo " make disk -- generate a kernel Image & copy it to floppy"
@echo " make cscope -- genereate the cscope index databases"
@echo " make tags -- generate the tag file"
@echo " make cg -- generate callgraph of the system architecture"
@echo " make clean -- clean the object files"
@echo " make distclean -- only keep the source code files"
@echo ""
@echo "Note!:"
@echo " * You need to install the following basic tools:"
@echo " ubuntu|debian, qemu|bochs, ctags, cscope, calltree, graphviz "
@echo " vim-full, build-essential, hex, dd, gcc 4.3.2..."
@echo " * Becarefull to change the compiling options, which will heavily"
@echo " influence the compiling procedure and running result."
@echo ""
@echo "Author:"
@echo " * 1991, linus write and release the original linux 0.95(linux 0.11)."
@echo " * 2005, jiong.zhao<[email protected]> release a new version "
@echo " which can be used in RedHat 9 along with the book 'Explaining "
@echo " Linux-0.11 Completly', and he build a site http://www.oldlinux.org"
@echo " * 2008, falcon<[email protected]> release a new version which can be"
@echo " used in ubuntu|debian 32bit|64bit with gcc 4.3.2, and give some new "
@echo " features for experimenting. such as this help info, boot/bootsect.s and"
@echo " boot/setup.s with AT&T rewritting, porting to gcc 4.3.2 :-)"
@echo ""
@echo "<<<Be Happy To Play With It :-)>>>"
### Dependencies:
init/main.o: init/main.c include/unistd.h include/sys/stat.h \
include/sys/types.h include/sys/times.h include/sys/utsname.h \
include/utime.h include/time.h include/linux/tty.h include/termios.h \
include/linux/sched.h include/linux/head.h include/linux/fs.h \
include/linux/mm.h include/signal.h include/asm/system.h \
include/asm/io.h include/stddef.h include/stdarg.h include/fcntl.h