Re: [Qemu-devel] Unable to Run Gprof Successfully on QEMU

[Atoosaah S]

How do I enable debugging?

I checked the configure file and I do not see any options for compiling with debugging, i.e. there is no --enable-debug option. I see that the "default parameters" section of the configure file sets: gdbstub="yes" but other than that i do not see any other reference to debugging. 

Also, I am working with qemu source code, which I configure, make, make install before every run.

Thank you again.

On 10/12/07, J. Mayer <address@hidden> wrote:

On Fri, 2007-10-12 at 01:00 -0700, Atoosaah S wrote:
> I'd appreciate any input on how to run gprof successfully on qemu. I'm
> new to gprof and am probably missing some steps.  I successfully ran
> gprof on a sorting program available online, then I attempted to run
> gprof on qemu.
>
> Here are the steps I take:
>
> I'm trying to run gprof on qemu, but am unsuccessful. my os is linux,
> my qemu version is 0.8.2. I configure qemu with the options "configure
> --prefix=/install_path --enable-gprof. Then I make and make install. I
> run qemu successfully using the options /install_path/qemu -hda
> diskimage.img -m 256 which results in the gmon.out file. My run of
> qemu involved starting the image (virtual linux OS), running a few
> simple commands and shutting the image down.
>
> Finally, I run gprof /intsall_path/qemu gmon.out > result.txt which
> gives the error: gprof: file 'qemu' has no symbols'
>
> Are there any other configuration options required? Should the image
> be run with differently?

You need a qemu executable with debugging symbols. Distributed versions
are usually stripped, which means the debug symbols are not present
anymore.
A way to get the debug symbol is to fetch the source and recompile it...

--
J. Mayer <address@hidden>
Never organized