Get the output of a program in a file using QEmu

Reng Zeng alan at fiucssa.org
Wed Jun 25 17:03:33 UTC 2008


I have my Makefile attached.

2008/6/25 Reng Zeng <alan at fiucssa.org>:

> Hi Joel,
>
> Thanks for your tips, I tried it as steps below, it still does not work.
>
> 1.  ../rtems/configure USE_COM1_AS_CONSOLE=1 BSP_PRESS_KEY_FOR_RESET=0
> --target=i386-rtems4.9 --enable-rtemsbsp=pc586 --disable-posix
> --disable-itron --enable-tests=samples
> 2. make clean
> 3. make
> 4. make install
>
> Then I run it my qemu:
>
> /usr/bin/qemu -monitor null -nographic -serial file:qemu.log -boot a -m 128
> -fda '/home/zengreng/rtems-boot.img' -hda
> 'fat:/home/zengreng/workspace/rtems_tools/src/generated/'  --no-reboot
>
> The program to run is managed by Makefile I drafted, not automake, I
> attached it to see whether that is the cause things do not work, shall I add
> something like "USE_COM1_AS_CONSOLE" into it as well?
>
>
> Thanks again,
> Alan
>
> 2008/6/25 Joel Sherrill <joel.sherrill at oarcorp.com>:
>
> Reng Zeng wrote:
>>
>>> Hello,
>>>
>>> It do NOT work for me, I add "#define USE_COM1_AS_CONSOLE 1 " into my
>>> init.c, and run qemu by
>>>     qemu -nographic -serial file:output.txt -boot a -m 128 -fda
>>> myimage.img -hda fat:.
>>>
>>>  No.  That's not going to work.  You have to configure with that set on
>> the configure
>> comment line.
>>
>> ..../configure ... USE_COM1_AS_CONSOLE=1 BSP_PRESS_KEY_FOR_RESET=0
>>
>> The BSP_PRESS_KEY_FOR_RESET=0 configures the BSP to not wait for a key
>> press before resetting.  Just add  --no-reboot to your qemu command line
>> and
>> it will "power down" which is exiting. :-D
>>
>>> I did not get anything from output.txt. It run well in graphic mode, but
>>> I want the output from the program.
>>>
>>> I would appreciate if you could shed me some light on my mind :)
>>>
>> This is a fragement from the shell script I use.
>>
>> QEMU="/usr/local/bin/qemu -cpu 486"
>>
>> runit()
>> {
>>  ARGS="-m 8 -boot a -fda ${fd0Image} -hda fat:${hd0Dir} \
>>        -monitor null -nographic -serial stdio --no-reboot"
>>
>>   ${QEMU} ${ARGS} >${logfile} 2>&1 &
>> }
>>
>>>
>>> Thanks,
>>> Alan
>>>
>>> 2008/3/21 Jean-Claude Grange <lebauce at free.fr <mailto:lebauce at free.fr>>:
>>>
>>>
>>>    Hello,
>>>
>>>    Thank you all for answers. USE_COM1_AS_CONSOLE =1 worked just fine.
>>>    I'm really interested in your patch, Joel. Are you going to commit it
>>>    soon ? Or would you mind sending your patch to me so that I can
>>>    test it.
>>>
>>>    Thanks
>>>    See you
>>>
>>>
>>>    Le 17 mars 08 à 19:47, Joel Sherrill a écrit :
>>>
>>>    > Jean-Claude Grange wrote:
>>>    >> Hello,
>>>    >>
>>>    >> Thanks for your answer. I'll try that.
>>>    >> But I wonder if it's possible to do it without modifying the
>>>    >> program ?
>>>    >>
>>>    >>
>>>    > Define USE_COM1_AS_CONSOLE =1 on the RTEMS configure
>>>    > command line and the console will move to the serial port.
>>>    > This is how I run RTEMS and GCC tests in an automated
>>>    > fashion.
>>>    >
>>>    > I discovered another nice qemu option --no-reboot which
>>>    > exits when the simulated PC does a reset.  This means you
>>>    > get a single run of the application and then it exits.  I have
>>>    > a pending patch in my tree to make the BSP reset on
>>>    > application exit or exception without waiting for a human
>>>    > to press a character.  This sped up the gcc test runs
>>>    > by a large factor since they have >50K tests.
>>>    >
>>>    > --joel
>>>    >> José Marinho <zemanel at gmail.com <mailto:zemanel at gmail.com>> wrote:
>>>    >>
>>>    >>
>>>    >>> you can allways create a file, format it to a specific fylesystem
>>>    >>> and pass
>>>    >>> it to qemu as an hard drive, and tell the rtems program to create
>>>    >>> and write
>>>    >>> in a file in that hard drive. and then you can mount that file
>>>    >>> with loop
>>>    >>> device and access it and get the output file. that's the approach
>>>    >>> that I'de
>>>    >>> take. Hope that's usefull to you
>>>    >>>
>>>    >>> José Marinho
>>>    >>>
>>>    >>> On 16/03/2008, Jean-Claude Grange <lebauce at free.fr
>>>    <mailto:lebauce at free.fr>> wrote:
>>>    >>>
>>>    >>>> Hello,
>>>    >>>>
>>>    >>>> I'm sorry if this is a stupid question but I've searched on the
>>>    >>>> mailing
>>>    >>>> list and
>>>    >>>> didn't find an answer.
>>>    >>>> I'm trying to get the output of a RTEMS program (for example the
>>>    >>>> Hello
>>>    >>>> from the
>>>    >>>> samples testsuite) using QEmu, into a file. I'm using the
>>>    >>>> command (on
>>>    >>>> Linux) :
>>>    >>>>
>>>    >>>> qemu -nographic -serial file:output.txt -boot a -fda myimage.img
>>>    >>>> -hda
>>>    >>>> fat:.
>>>    >>>>
>>>    >>>> but I don't get anything in the 'output.txt' file. I also tried -
>>>    >>>> serial
>>>    >>>> /dev/ttyS* and with the -monitor stdio option but I still have
>>>    >>>> nothing. I
>>>    >>>> must
>>>    >>>> be doing something wrong.
>>>    >>>>
>>>    >>>> I would really appreciate your help.
>>>    >>>> Thank you
>>>    >>>> _______________________________________________
>>>    >>>> rtems-users mailing list
>>>    >>>> rtems-users at rtems.com <mailto:rtems-users at rtems.com>
>>>    >>>> http://rtems.rtems.org/mailman/listinfo/rtems-users
>>>    >>>>
>>>    >>>>
>>>    >>>
>>>    >>> --
>>>    >>> <img> http://www.deec.uc.pt/common/img/deezoom.gif </img>
>>>    >>>
>>>    >>>
>>>    >>
>>>    >>
>>>    >> _______________________________________________
>>>    >> rtems-users mailing list
>>>    >> rtems-users at rtems.com <mailto:rtems-users at rtems.com>
>>>    >> http://rtems.rtems.org/mailman/listinfo/rtems-users
>>>    >>
>>>    >
>>>    >
>>>    > --
>>>    > Joel Sherrill, Ph.D.             Director of Research & Development
>>>    > joel.sherrill at OARcorp.com        On-Line Applications Research
>>>    > Ask me about RTEMS: a free RTOS  Huntsville AL 35805
>>>    >   Support Available             (256) 722-9985
>>>    >
>>>    >
>>>
>>>    _______________________________________________
>>>    rtems-users mailing list
>>>    rtems-users at rtems.com <mailto:rtems-users at rtems.com>
>>>    http://rtems.rtems.org/mailman/listinfo/rtems-users
>>>
>>>
>>>
>>
>> --
>> Joel Sherrill, Ph.D.             Director of Research & Development
>> joel.sherrill at OARcorp.com        On-Line Applications Research
>> Ask me about RTEMS: a free RTOS  Huntsville AL 35805
>>  Support Available             (256) 722-9985
>>
>>
>>
>
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