Error "No source file named"

Error "No source file named"

[Mahmood Naderan]

Hi

When I want to set a breakpoint at a specific line number, I get the following error:

(gdb) break /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/src/gpgpu-sim/shader.cc:1656
No source file named /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/src/gpgpu-sim/shader.cc.
Make breakpoint pending on future shared library load? (y or [n])


However, that line exists.

$ sed -n 1656p /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/src/gpgpu-sim/shader.cc
    printf("[Mahmood:shader.cc:1655] %" PRIu64 "\n", localaddr);



Any idea about that?

Regards,
Mahmood

Re: Error "No source file named"

[Eli Zaretskii]

> Date: Sun, 8 Aug 2021 13:38:33 +0000 (UTC)
> From: Mahmood Naderan via Gdb <gdb@sourceware.org>
> 
> When I want to set a breakpoint at a specific line number, I get the following error:
> 
> (gdb) break /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/src/gpgpu-sim/shader.cc:1656
> No source file named /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/src/gpgpu-sim/shader.cc.
> Make breakpoint pending on future shared library load? (y or [n])
> 
> 
> However, that line exists.
> 
> $ sed -n 1656p /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/src/gpgpu-sim/shader.cc
>     printf("[Mahmood:shader.cc:1655] %" PRIu64 "\n", localaddr);

Try using the command "info sources" to see what GDB knows about
source file names of your program.  And why don't you use just the
base name of the file, i.e. just "shader.cc"?

Re: Error "No source file named"

[Mahmood Naderan]

>Try using the command "info sources" to see what GDB knows about
>source file names of your program.  And why don't you use just the
>base name of the file, i.e. just "shader.cc"?

OK I did that and see shader.h, so I wonder what does that mean? 
Why .cc is not included? How can I dig more?


Regards,
Mahmood

Re: Error "No source file named"

[Andreas Schwab]

On Aug 08 2021, Mahmood Naderan via Gdb wrote:

> Why .cc is not included?

Most likely it wasn't compiled with debug info.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
"And now for something completely different."

Re: Error "No source file named"

[Mahmood Naderan]

>Most likely it wasn't compiled with debug info.

Andreas, I checked the build command:

g++  -g3 -fPIC -DCUDART_VERSION=11020 -Wall -DDEBUG -DTRACING_ON=1 -std=c++0x -ggdb -I/usr/local/cuda-11.2/include -I/home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/src/gpuwattch/ -DGPGPUSIM_POWER_MODEL -o /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/build/gcc-9.3.0/cuda-11020/debug/gpgpu-sim/shader.o -c shader.cc

...

g++ -std=c++0x -o ./bin/debug/accel-sim.out  -L/home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/lib/gcc-9.3.0/cuda-11020/debug/ -lcudart -lm -lz -lGL -pthread ./build/debug/*.o




Again, I run gdb with "info sources" and only see shader.h.
How that is possible that .h is in there but not .cc? I ask that because then it wants to compile the .cc file, it uses the .h file for headers.


Regards,
Mahmood

Re: Error "No source file named"

[Jonah Graham]

Hi Mahmood,

I hope this is useful and not unrelated....



On Sun, 8 Aug 2021 at 12:02, Mahmood Naderan via Gdb <gdb@sourceware.org>
wrote:

>
> >Most likely it wasn't compiled with debug info.
>
> Andreas, I checked the build command:
>
> g++  -g3 -fPIC -DCUDART_VERSION=11020 -Wall -DDEBUG -DTRACING_ON=1
> -std=c++0x -ggdb -I/usr/local/cuda-11.2/include
> -I/home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/src/gpuwattch/
> -DGPGPUSIM_POWER_MODEL -o
> /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/build/gcc-9.3.0/cuda-11020/debug/gpgpu-sim/shader.o
> -c shader.cc
>
>
In your build command the .o is output to debug/gpgpu-sim/shader.o



> ...
>
> g++ -std=c++0x -o ./bin/debug/accel-sim.out
> -L/home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/lib/gcc-9.3.0/cuda-11020/debug/
> -lcudart -lm -lz -lGL -pthread ./build/debug/*.o
>
>
But here it is pulling debug/*.o

Could you have two copies of shader.o hanging about?

HTH
Jonah

>
>

Re: Error "No source file named"

[Mahmood Naderan]

>Could you have two copies of shader.o hanging about?

Jonah, Thanks for the tip. I checked more and see


g++  -g3 -fPIC -DCUDART_VERSION=11020 -Wall -DDEBUG -DTRACING_ON=1 -std=c++0x -ggdb \
     -I/usr/local/cuda-11.2/include -I/home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/src/gpuwattch/ \
     -DGPGPUSIM_POWER_MODEL -o /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/build/gcc-9.3.0/cuda-11020/debug/gpgpu-sim/shader.o \
     -c shader.cc


ar rcs  /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/build/gcc-9.3.0/cuda-11020/debug/gpgpu-sim/libgpu_uarch_sim.a \
        /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/build/gcc-9.3.0/cuda-11020/debug/gpgpu-sim/shader.o \
        ...


g++ -shared -Wl,-soname,libcudart.so -Wl,--version-script=linux-so-version.txt \
        ...
        /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/build/gcc-9.3.0/cuda-11020/debug/gpgpu-sim/*.o \
        -o lib/gcc-9.3.0/cuda-11020/debug/libcudart.so





And the final binary depends on the libcudart.so

$ ldd gpu-simulator/bin/debug/accel-sim.out
        linux-vdso.so.1 (0x00007fffc01c3000)
        libcudart.so => /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/lib/gcc-9.3.0/cuda-11020/debug/libcudart.so (0x00007f7c3e8f4000)
        libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f7c3e6f0000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f7c3e6d5000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f7c3e6b2000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f7c3e4c0000)
        libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f7c3e4a2000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f7c3e353000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f7c3f2dc000)



Do you also confirm that shader.cc symbols must be in the final binary?



Regards,
Mahmood

Re: Error "No source file named"

[Jeffrey Walton]

On Sun, Aug 8, 2021 at 12:35 PM Mahmood Naderan via Gdb
<gdb@sourceware.org> wrote:
>
> >Could you have two copies of shader.o hanging about?
>
> Jonah, Thanks for the tip. I checked more and see
>
>
> g++  -g3 -fPIC -DCUDART_VERSION=11020 -Wall -DDEBUG -DTRACING_ON=1 -std=c++0x -ggdb \
>      -I/usr/local/cuda-11.2/include -I/home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/src/gpuwattch/ \
>      -DGPGPUSIM_POWER_MODEL -o /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/build/gcc-9.3.0/cuda-11020/debug/gpgpu-sim/shader.o \
>      -c shader.cc
>
>
> ar rcs  /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/build/gcc-9.3.0/cuda-11020/debug/gpgpu-sim/libgpu_uarch_sim.a \
>         /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/build/gcc-9.3.0/cuda-11020/debug/gpgpu-sim/shader.o \
>         ...
>
>
> g++ -shared -Wl,-soname,libcudart.so -Wl,--version-script=linux-so-version.txt \
>         ...
>         /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/build/gcc-9.3.0/cuda-11020/debug/gpgpu-sim/*.o \
>         -o lib/gcc-9.3.0/cuda-11020/debug/libcudart.so
>
>
>
>
>
> And the final binary depends on the libcudart.so
>
> $ ldd gpu-simulator/bin/debug/accel-sim.out
>         linux-vdso.so.1 (0x00007fffc01c3000)
>         libcudart.so => /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/lib/gcc-9.3.0/cuda-11020/debug/libcudart.so (0x00007f7c3e8f4000)
>         libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f7c3e6f0000)
>         libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f7c3e6d5000)
>         libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f7c3e6b2000)
>         libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f7c3e4c0000)
>         libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f7c3e4a2000)
>         libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f7c3e353000)
>         /lib64/ld-linux-x86-64.so.2 (0x00007f7c3f2dc000)
>
> Do you also confirm that shader.cc symbols must be in the final binary?

You might also find -fdebug-prefix-map useful. It allows you to tell
the debugger where to locate source files for object files if the
source files have been relocated to a directory like /lib/src. It may
help here, too.

Jeff

Re: Error "No source file named"

[Mahmood Naderan]

>You might also find -fdebug-prefix-map useful. It allows you to tell
>the debugger where to locate source files for object files if the
>source files have been relocated to a directory like /lib/src. It may
>help here, too.

Jeffrey,
That gcc switch needs two paths (old and new).
I don't know what is old and new then.


Regards,
Mahmood

Re: Error "No source file named"

[Jonah Graham]

(sorry for top post, my phone's email client isn't working well)

Hi Mahmood,

Until the so loads info sources won't show info about it. Did you say "yes"
to the make breakpoint pending and then run until the so was loaded. You
should get a message during your run when the so is loaded.

HTH,
Jonah

On Sun., Aug. 8, 2021, 09:47 Mahmood Naderan via Gdb, <gdb@sourceware.org>
wrote:

> Hi
>
> When I want to set a breakpoint at a specific line number, I get the
> following error:
>
> (gdb) break
> /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/src/gpgpu-sim/shader.cc:1656
> No source file named
> /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/src/gpgpu-sim/shader.cc.
> Make breakpoint pending on future shared library load? (y or [n])
>
>
>
> However, that line exists.
>
> $ sed -n 1656p
> /home/mahmood/accel-sim-framework/gpu-simulator/gpgpu-sim/src/gpgpu-sim/shader.cc
>     printf("[Mahmood:shader.cc:1655] %" PRIu64 "\n", localaddr);
>
>
>
> Any idea about that?
>
> Regards,
> Mahmood
>

Re: Error "No source file named"

[Jeffrey Walton]

On Sun, Aug 8, 2021 at 1:15 PM Mahmood Naderan <nt_mahmood@yahoo.com> wrote:
>
> >You might also find -fdebug-prefix-map useful. It allows you to tell
> >the debugger where to locate source files for object files if the
> >source files have been relocated to a directory like /lib/src. It may
> >help here, too.
>
> That gcc switch needs two paths (old and new).
> I don't know what is old and new then.

I use a script like the one shown below.

I assume you are installing your warez into $HOME. You would use
--prefix=$HOME when configuring. So binaries are in $HOME/bin,
libraries are in $HOME/lib, etc.

Use -fdebug-prefix-map as an option to CFLAGS and CXXFLAGS like so:

    -fdebug-prefix-map=${PWD}="${HOME}/src/gpu-simulator"

Then, after configure, make and make install, execute the script:

    # run from the gpu-simulator directory, where you configure
    bash copy-sources.sh "${PWD}" "${HOME}/src/gpu-simulator"

Here's the copy-sources.sh script:

$ cat copy-sources.sh
#!/usr/bin/env bash

src_dir="$1"
dest_dir="$2"

if [[ -z "${src_dir}" ]]; then
    echo "Please specify a source directory"
    exit 1
fi

if [[ ! -d "${src_dir}" ]]; then
    echo "Source directory is not valid"
    exit 1
fi

if [[ -z "${dest_dir}" ]]; then
    echo "Please specify a destination directory"
    exit 1
fi

cd "${src_dir}" || exit 1
rm -rf "${dest_dir}"
mkdir -p "${dest_dir}"

IFS= find "./" \( -name '*.h' -o -name '*.hpp' -o -name '*.hxx' -o \
                  -name '*.c' -o -name '*.cc' -o \
                  -name '*.cpp' -o -name '*.cxx' -o -name '*.CC' -o \
                  -name '*.s' -o -name '*.S' \) -print | while read -r file
do
    # This trims the leading "./" in "./foo.c".
    file=$(echo -n "${file}" | tr -s '/' | cut -c 3-);
    cp --parents --preserve=timestamps "${file}" "${dest_dir}"
done

exit 0

Jeff

Re: Error "No source file named"

[Mahmood Naderan]

>Did you say "yes" to the make breakpoint pending and then run until the so was loaded.

Interesting.... You are correct Jonah. 
It seems that at the first point, it hasn't loaded the .so file. 
Later when I run "info sources" I see tons of source files.

Thanks for pointing out that.





Regards,
Mahmood