geekok project0（上）（实验环境的搭建）
apt-get install build-essential apt-get install bochs bochs-x nasm
此处下载的bochs应该是比较新的...如果之后遇到
failed assertion in init_idt :g_handlersizenoterr == g_handlersizeerr
这个错误，建议安装比较老的nasm版本，比如2.08.02链接
下载geekos-0.3软件包，地址为： geekOS下载地址
然后解压到~/work目录。
然后进入到 /work/geekos-0.3.0/src/project0/build 目录下
之后的操作都是在这个目录下进行的。
rkz2013@111qqz-ThinkPad-X200 ~/work/geekos-0.3.0/src/project0/build $ make depend
Makefile:249: depend.mak: 没有那个文件或目录
touch depend.mak
gcc -M -O -Wall -Werror -g -DGEEKOS -I../include \
../src/geekos/idt.c ../src/geekos/int.c ../src/geekos/trap.c ../src/geekos/irq.c ../src/geekos/io.c ../src/geekos/keyboard.c ../src/geekos/screen.c ../src/geekos/timer.c ../src/geekos/mem.c ../src/geekos/crc32.c ../src/geekos/gdt.c ../src/geekos/tss.c ../src/geekos/segment.c ../src/geekos/bget.c ../src/geekos/malloc.c ../src/geekos/synch.c ../src/geekos/kthread.c ../src/geekos/main.c \
| perl -n -e 's,^(\S),geekos/$1,;print' \
> depend.mak
gcc -M -O -Wall -Werror -I../include -I../include/libc \
../src/common/fmtout.c ../src/common/string.c ../src/common/memmove.c \
| perl -n -e 's,^(\S),common/$1,;print' \
>> depend.mak
然后执行 make
1rkz2013@111qqz-ThinkPad-X200 ~/work/geekos-0.3.0/src/project0/build $ make
2gcc -c -O -Wall -Werror -g -DGEEKOS -I../include ../src/geekos/idt.c -o geekos/idt.o
3gcc -c -O -Wall -Werror -g -DGEEKOS -I../include ../src/geekos/int.c -o geekos/int.o
4gcc -c -O -Wall -Werror -g -DGEEKOS -I../include ../src/geekos/trap.c -o geekos/trap.o
5gcc -c -O -Wall -Werror -g -DGEEKOS -I../include ../src/geekos/irq.c -o geekos/irq.o
6gcc -c -O -Wall -Werror -g -DGEEKOS -I../include ../src/geekos/io.c -o geekos/io.o
7gcc -c -O -Wall -Werror -g -DGEEKOS -I../include ../src/geekos/keyboard.c -o geekos/keyboard.o
8gcc -c -O -Wall -Werror -g -DGEEKOS -I../include ../src/geekos/screen.c -o geekos/screen.o
9gcc -c -O -Wall -Werror -g -DGEEKOS -I../include ../src/geekos/timer.c -o geekos/timer.o
10gcc -c -O -Wall -Werror -g -DGEEKOS -I../include ../src/geekos/mem.c -o geekos/mem.o
11gcc -c -O -Wall -Werror -g -DGEEKOS -I../include ../src/geekos/crc32.c -o geekos/crc32.o
12gcc -c -O -Wall -Werror -g -DGEEKOS -I../include ../src/geekos/gdt.c -o geekos/gdt.o
13In file included from ../src/geekos/gdt.c:11:0:
14../include/geekos/segment.h:43:5: error: ‘packed’ attribute ignored for field of type ‘uchar_t’ [-Werror=attributes]
15 uchar_t baseHigh PACKED ;
16 ^
17cc1: all warnings being treated as errors
18make: *** [geekos/gdt.o] 错误 1
报错，原因是编译检查过于严格。。我们修改makefile文件，取消把warning当成错误看待。
makefile 的路径就是当前路径，也就是：
rkz2013@111qqz-ThinkPad-X200 ~/work/geekos-0.3.0/src/project0/build $ vim Makefile
把149行的 -Werror 去掉。
然后再次make
1rkz2013@111qqz-ThinkPad-X200 ~/work/geekos-0.3.0/src/project0/build $ make
2gcc -c -O -Wall -g -DGEEKOS -I../include ../src/geekos/gdt.c -o geekos/gdt.o
3In file included from ../src/geekos/gdt.c:11:0:
4../include/geekos/segment.h:43:5: warning: ‘packed’ attribute ignored for field of type ‘uchar_t’ [-Wattributes]
5 uchar_t baseHigh PACKED ;
6 ^
7gcc -c -O -Wall -g -DGEEKOS -I../include ../src/geekos/tss.c -o geekos/tss.o
8In file included from ../src/geekos/tss.c:18:0:
9../include/geekos/segment.h:43:5: warning: ‘packed’ attribute ignored for field of type ‘uchar_t’ [-Wattributes]
10 uchar_t baseHigh PACKED ;
11 ^
12gcc -c -O -Wall -g -DGEEKOS -I../include ../src/geekos/segment.c -o geekos/segment.o
13In file included from ../src/geekos/segment.c:18:0:
14../include/geekos/segment.h:43:5: warning: ‘packed’ attribute ignored for field of type ‘uchar_t’ [-Wattributes]
15 uchar_t baseHigh PACKED ;
16 ^
17gcc -c -O -Wall -g -DGEEKOS -I../include ../src/geekos/bget.c -o geekos/bget.o
18gcc -c -O -Wall -g -DGEEKOS -I../include ../src/geekos/malloc.c -o geekos/malloc.o
19gcc -c -O -Wall -g -DGEEKOS -I../include ../src/geekos/synch.c -o geekos/synch.o
20gcc -c -O -Wall -g -DGEEKOS -I../include ../src/geekos/kthread.c -o geekos/kthread.o
21gcc -c -O -Wall -g -DGEEKOS -I../include ../src/geekos/main.c -o geekos/main.o
22nasm -I../src/geekos/ -f elf ../src/geekos/lowlevel.asm -o geekos/lowlevel.o
23gcc -c -O -Wall -I../include -I../include/libc ../src/common/fmtout.c -o common/fmtout.o
24gcc -c -O -Wall -I../include -I../include/libc ../src/common/string.c -o common/string.o
25gcc -c -O -Wall -I../include -I../include/libc ../src/common/memmove.c -o common/memmove.o
26ld -o geekos/kernel.exe -Ttext 0x00010000 -e Main \
27 geekos/idt.o geekos/int.o geekos/trap.o geekos/irq.o geekos/io.o geekos/keyboard.o geekos/screen.o geekos/timer.o geekos/mem.o geekos/crc32.o geekos/gdt.o geekos/tss.o geekos/segment.o geekos/bget.o geekos/malloc.o geekos/synch.o geekos/kthread.o geekos/main.o geekos/lowlevel.o common/fmtout.o common/string.o common/memmove.o
28ld: i386 architecture of input file `geekos/lowlevel.o' is incompatible with i386:x86-64 output
29common/fmtout.o：在函数‘Format_Output’中：
30fmtout.c:(.text+0xa16)：对‘__stack_chk_fail’未定义的引用
31make: *** [geekos/kernel.exe] 错误 1
解决办法是把makefile文件中第148行添加编译选项
-fno-stack-protector
然后把makefile文件中的100行至109行修改为如下内容 （修改了100行，106行，109行，条件编译什么的。。可能遇到依赖的库不全的情况。。。安装就好）
100 TARGET_CC := $(TARGET_CC_PREFIX)gcc -m32
101
102 # Host C compiler. This is used to compile programs to execute on
103 # the host platform, not the target (x86) platform. On x86/ELF
104 # systems, such as Linux and FreeBSD, it can generally be the same
105 # as the target C compiler.
106 HOST_CC := gcc -m32
107
108 # Target linker. GNU ld is probably to only one that will work.
109 TARGET_LD := $(TARGET_CC_PREFIX)ld -m elf_i386
然后要把以前失败的清理干净。。重新编译。。。
1rkz2013@111qqz-ThinkPad-X200 ~/work/geekos-0.3.0/src/project0/build $ make clean
2for d in geekos common libc user tools; do \
3 (cd $d && rm -f *); \
4 done
5rkz2013@111qqz-ThinkPad-X200 ~/work/geekos-0.3.0/src/project0/build $ make depend
6gcc -m32 -M -O -Wall -fno-stack-protector -g -DGEEKOS -I../include \
7 ../src/geekos/idt.c ../src/geekos/int.c ../src/geekos/trap.c ../src/geekos/irq.c ../src/geekos/io.c ../src/geekos/keyboard.c ../src/geekos/screen.c ../src/geekos/timer.c ../src/geekos/mem.c ../src/geekos/crc32.c ../src/geekos/gdt.c ../src/geekos/tss.c ../src/geekos/segment.c ../src/geekos/bget.c ../src/geekos/malloc.c ../src/geekos/synch.c ../src/geekos/kthread.c ../src/geekos/main.c \
8 | perl -n -e 's,^(\S),geekos/$1,;print' \
9 > depend.mak
10gcc -m32 -M -O -Wall -fno-stack-protector -I../include -I../include/libc \
11 ../src/common/fmtout.c ../src/common/string.c ../src/common/memmove.c \
12 | perl -n -e 's,^(\S),common/$1,;print' \
13 >> depend.mak
14rkz2013@111qqz-ThinkPad-X200 ~/work/geekos-0.3.0/src/project0/build $ make
15gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/idt.c -o geekos/idt.o
16gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/int.c -o geekos/int.o
17gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/trap.c -o geekos/trap.o
18gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/irq.c -o geekos/irq.o
19gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/io.c -o geekos/io.o
20gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/keyboard.c -o geekos/keyboard.o
21gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/screen.c -o geekos/screen.o
22gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/timer.c -o geekos/timer.o
23gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/mem.c -o geekos/mem.o
24gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/crc32.c -o geekos/crc32.o
25gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/gdt.c -o geekos/gdt.o
26In file included from ../src/geekos/gdt.c:11:0:
27../include/geekos/segment.h:43:5: warning: ‘packed’ attribute ignored for field of type ‘uchar_t’ [-Wattributes]
28 uchar_t baseHigh PACKED ;
29 ^
30gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/tss.c -o geekos/tss.o
31In file included from ../src/geekos/tss.c:18:0:
32../include/geekos/segment.h:43:5: warning: ‘packed’ attribute ignored for field of type ‘uchar_t’ [-Wattributes]
33 uchar_t baseHigh PACKED ;
34 ^
35gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/segment.c -o geekos/segment.o
36In file included from ../src/geekos/segment.c:18:0:
37../include/geekos/segment.h:43:5: warning: ‘packed’ attribute ignored for field of type ‘uchar_t’ [-Wattributes]
38 uchar_t baseHigh PACKED ;
39 ^
40gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/bget.c -o geekos/bget.o
41gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/malloc.c -o geekos/malloc.o
42gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/synch.c -o geekos/synch.o
43gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/kthread.c -o geekos/kthread.o
44gcc -m32 -c -O -Wall -fno-stack-protector -g -DGEEKOS -I../include ../src/geekos/main.c -o geekos/main.o
45nasm -I../src/geekos/ -f elf ../src/geekos/lowlevel.asm -o geekos/lowlevel.o
46gcc -m32 -c -O -Wall -fno-stack-protector -I../include -I../include/libc ../src/common/fmtout.c -o common/fmtout.o
47gcc -m32 -c -O -Wall -fno-stack-protector -I../include -I../include/libc ../src/common/string.c -o common/string.o
48gcc -m32 -c -O -Wall -fno-stack-protector -I../include -I../include/libc ../src/common/memmove.c -o common/memmove.o
49ld -m elf_i386 -o geekos/kernel.exe -Ttext 0x00010000 -e Main \
50 geekos/idt.o geekos/int.o geekos/trap.o geekos/irq.o geekos/io.o geekos/keyboard.o geekos/screen.o geekos/timer.o geekos/mem.o geekos/crc32.o geekos/gdt.o geekos/tss.o geekos/segment.o geekos/bget.o geekos/malloc.o geekos/synch.o geekos/kthread.o geekos/main.o geekos/lowlevel.o common/fmtout.o common/string.o common/memmove.o
51nm geekos/kernel.exe > geekos/kernel.syms
52nasm -f bin \
53 -I../src/geekos/ \
54 -DENTRY_POINT=0x`egrep 'Main$' geekos/kernel.syms |awk '{print $1}'` \
55 ../src/geekos/setup.asm \
56 -o geekos/setup.bin
57perl ../scripts/pad geekos/setup.bin 512
58objcopy -R .dynamic -R .note -R .comment -S -O binary geekos/kernel.exe geekos/kernel.bin
59perl ../scripts/pad geekos/kernel.bin 512
60nasm -f bin \
61 -I../src/geekos/ \
62 -DNUM_SETUP_SECTORS=`perl ../scripts/numsecs geekos/setup.bin` \
63 -DNUM_KERN_SECTORS=`perl ../scripts/numsecs geekos/kernel.bin` \
64 ../src/geekos/fd_boot.asm \
65 -o geekos/fd_boot.bin
66cat geekos/fd_boot.bin geekos/setup.bin geekos/kernel.bin > fd.img
编译成功。。。 检查一下：
rkz2013@111qqz-ThinkPad-X200 ~/work/geekos-0.3.0/src/project0/build $ ls -a
. .. .bochsrc common depend.mak fd.img geekos libc Makefile tools user
然后启动bochs
报错：
rkz2013@111qqz-ThinkPad-X200 ~/work/geekos-0.3.0/src/project0/build $ bochs
========================================================================
Bochs x86 Emulator 2.4.6
Build from CVS snapshot, on February 22, 2011
Compiled at Jun 8 2013, 05:16:04
========================================================================
00000000000i[ ] LTDL_LIBRARY_PATH not set. using compile time default '/usr/lib/bochs/plugins'
00000000000i[ ] BXSHARE not set. using compile time default '/usr/share/bochs'
00000000000i[ ] reading configuration from .bochsrc
00000000000p[ ] >>PANIC<< .bochsrc:4: vgaromimage directive malformed.
00000000000e[CTRL ] notify called, but no bxevent_callback function is registered
00000000000i[CTRL ] quit_sim called with exit code 1
因为配置文件.bochsrc 太古老了。。。路径什么的都是错的。。。
最终修改为如下：
# An example .bochsrc file.
# You will need to edit these lines to reflect your system.
vgaromimage: file=/usr/share/vgabios/vgabios.bin
romimage: file=/usr/share/bochs/BIOS-bochs-latest
megs: 8
boot: a
floppya: 1_44=fd.img, status=inserted
#floppya: 1_44=fd_aug.img, status=inserted
log: ./bochs.out
keyboard_serial_delay: 200
vga_update_interval: 300000
mouse: enabled=0
private_colormap: enabled=0
i440fxsupport: enabled=0
# Uncomment this to write all bochs debugging messages to
# bochs.out. This produces a lot of output, but can be very
# useful for debugging the kernel.
#debug: action=report
然后继续启动。。报错：
========================================================================
Bochs x86 Emulator 2.4.6
Build from CVS snapshot, on February 22, 2011
Compiled at Jun 8 2013, 05:16:04
========================================================================
00000000000i[ ] LTDL_LIBRARY_PATH not set. using compile time default '/usr/lib/bochs/plugins'
00000000000i[ ] BXSHARE not set. using compile time default '/usr/share/bochs'
00000000000i[ ] reading configuration from .bochsrc
00000000000i[ ] lt_dlhandle is 0x2668a40
00000000000i[PLGIN] loaded plugin libbx_x.so
00000000000i[ ] installing x module as the Bochs GUI
00000000000i[ ] using log file ./bochs.out
bochs-bin: symbol lookup error: /usr/lib/bochs/plugins/libbx_x.so: undefined symbol: XpmCreatePixmapFromData
这是由apt-get install bochs-x 得到的 libbx_x.so不完善造成的 解决办法： 换个显示方案。
sudo apt-get install bochs-sdl
然后在.bochsrc文件中添加
display_library: sdl
再次运行bochs 。。终于可以了。。。感动
