All,
I have a AT91SAM9G25 system that has been idle for a couple years (running
morty, yocto version 2.2.1) and I am working on updating to the latest Yocto
production branch. Before I get there, I'm trying to confirm the old setup and
I'm having problems with remote debugging. I know there have been changes
since yocto version 2.7 for debugging support, so I want to make sure I can get
the old setup to work first prior to changing everything. I'm looking for
assistance in tracking down my debug issues.
My stable production image is based off of core-image-minimal, with a few
additional packages for our proprietary applications (proprietary applications
are written in C). I also have a development image, based off of our
production image, with the following additions:
IMAGE_FEATURES += "package-management dev-pkgs eclipse-debug
allow-empty-password empty-root-password"
IMAGE_INSTALL += " \
#same additional packages as production image \
#"-dbg" version of proprietary applications \
gdbserver \
"
# Strip python from the image to reduce the image size
PACKAGE_EXCLUDE = "python"
I have the Eclipse Yocto plugin installed and it is setup to use the SDK that I
have built based on the development image. I've confirmed that I can start a
debug session on one of our proprietary applications. I can set breakpoints
and run the debugger. However, the debugger always stops at the first call to
uuid_compare with a SIGSEGV. The last line in the call stack states "<symbol
is not available> 0x00000000". From my understanding, the stack pointer is
getting set to NULL when uuid_compare is getting called. If I stop the
debugger and just run the application on the hardware, the application runs
without errors. I have confirmed with syslog messages that I do not have the
same NULL stack pointer issue when I run the application outside of the
debugger.
Any suggestions on where to start looking? I don't see any obvious possible
causes and I don't know where to start looking for the problem.
Thanks,
Bryan
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