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

[Ben Taylor]

---- Atoosaah S <address@hidden> wrote: 
> 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.

then run the binary from the source tree, as it is not stripped.  As part
of make install, the binaries are stripped.

HTH

> 
> 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
> >
> >