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Re: [cdt-debug-dev] arm-elf-gcc simulator debugging works with Eclipse
|
I am in the process of analyzing CDT and its features and how well does it
play with the target devices and environments. QNX just happens to be the
first platform I have attempted to setup remote debugging on using
Eclipse-CDT. I just wish to identify, if any, the technical difficulties
which other developers may face while setting up Eclipse-CDT for remote
debugging on their target devices, or what level of internal details does
one need to know about Eclipse-CDT or their respective GDB environments for
a quick and easy setup.
I like the concept of providing an open framework to support a broader
range of target environments, but I think the integration of Eclipse-CDT
with the supported default GDB's should be made as less painful as can be
for first time users, or some documentation or tips on doing the same could
be very helpful. But that again is just my point of view.
Coming back to my problem.....
I discovered that my host environment passes its own respective path to the
app executable (for example, /cygdrive/c/<some path>/hello) to the target
device to execute. And obviously that path is not valid on the target and
it complains about the file not being found.
Does anyone see something obviously wrong about what I am trying to
accomplish here ? or if anybody has an alternate suggestion I would
appreciate that too....:)
btw...my Eclipse version is 2.1 and the latest version of CDT on top of it.
Regards,
Amit Aghara
|---------+------------------------------->
| | Thomas Fletcher |
| | <thomasf@xxxxxxx> |
| | Sent by: |
| | cdt-debug-dev-admin@|
| | eclipse.org |
| | |
| | |
| | 05/05/2003 08:57 AM |
| | Please respond to |
| | cdt-debug-dev |
| | |
|---------+------------------------------->
>---------------------------------------------------------------------------------------------------------------|
| |
| To: cdt-debug-dev@xxxxxxxxxxx |
| cc: |
| Subject: Re: [cdt-debug-dev] arm-elf-gcc simulator debugging works with Eclipse |
| |
>---------------------------------------------------------------------------------------------------------------|
Amit Aghara wrote:
>This is a remote debugging issue on a QNX Neutrino RTOS (version 6.2.1)
>using Eclipse-CDT. I am just attempting to run and debug a simple hello
>world sample.
>
Personally I would have to suggest that you opt for the QNX productized
version of the CDT
which includes all of the required components and more, properly
configured and ready to go
out of the box for you =;-) This includes a proper debug plugin for the
qnx remote protocol,
target definition and connectivity and debug target agent.
>The error which I get when I run debug on the application it gives me an
>error saying "No such file found on target"
>
Then this would lead me to believe that that the file could not be found
to launch on the remote
target =;-) How is the file being run over there? For the QNX plugins
we had to make some
modifications to the default debug launcher to specialize it for the QNX
environment which included
being able to override the GDB run command. I suspect that you are
running into the same
problems.
Also note that the changes that you have made are non flexible in terms
of allowing your
environment to exist with others (ie an ntoarm debug agent) all in the
same environment.
The only real way to work around this (afaik) is to have your own debug
plugin, which is
of course exactly what the QNX product is. If you have 6.2.1, then you
should be
able to have access to this. If you don't ... well that is another
conversation all together =;-)
Thanks,
Thomas
>My setup details are...
>- using Eclipse 2.1 with the latest stable CDT builds from the CVS repos.
>- my target RTOS is QNX Neutrino version 6.2.1 with a "ppc" processor
which
>uses the right level cross-compilers & GDB 5.2.1 under the covers
>(ntoppc-gcc & ntoppc-gdb)
>- my target is connected to my desktop via ethernet
>
>Here are the steps which I performed based on my reading from few of the
>emails on remote debugging...
>1) I modified the plugin.xml file under the org.eclipse.debug.mi.core
>project. made the following change...
> <debugger
> platform="win32"
> name="%CygwinGDBDebugger.name"
> modes="run,core,attach"
> cpu="native,ppc" <--------------------
>added "ppc" to the list of cpu's
> class="org.eclipse.cdt.debug.mi.core.CygwinGDBDebugger"
> id="org.eclipse.cdt.debug.mi.core.CygwinCDebugger">
> </debugger>
>
>This change made me get past the problem where I could atleast select a
>debugger from my drop-down list in the debug configuraiton page. (Actually
>I just ended up adding "ppc" to all the 3 default debuggers
>{CygwinGDBDebugger, GDBDebugger & GDBServerDebugger} to be able to try all
>options)
>2) I created a command file (.gdbinit) with the following commands...
>target qnx <ip address of target>:<port>
>set qnxremotecwd /<application dir>
>sym hello
>
>While debugging thru these plugins, I think it seems that it took the
>command file and it attempts to start the GDB process with the following
>command....
><specified path to GDB executable>\ntoppc-gdb.exe --cd=<absolute path to
yr
>project workspace> --command=<specified path to my .gdbinit file>\.gdbinit
>-q -nw -i -mi1 <absolute path to the program executable>\hello
>for example, C:\qnx\bin\ntoppc-gdb.exe --cd=C:\eclipse\workspace\MyProject
>--command=C:\.gdbinit -q -nw -i -mi1 C:\eclipse\workspace\MyProject\hello
>
>
>Am I missing any more steps to setting this up? or Am I doing something
>completely wrong here? I hope I have provided enough info to understand my
>problem.
>
>Please advise, I appreciate all yr help. Thanks.
>
>Regards,
>
>Amit Aghara
>
>
>
>|---------+------------------------------->
>| | "Alain Magloire" |
>| | <alain@xxxxxxx> |
>| | Sent by: |
>| | cdt-debug-dev-admin@|
>| | eclipse.org |
>| | |
>| | |
>| | 04/29/2003 05:52 PM |
>| | Please respond to |
>| | cdt-debug-dev |
>| | |
>|---------+------------------------------->
>
>---------------------------------------------------------------------------------------------------------------|
> |
|
> | To: cdt-debug-dev@xxxxxxxxxxx
|
> | cc:
|
> | Subject: Re: [cdt-debug-dev] arm-elf-gcc simulator debugging
works with Eclipse |
> |
|
>
>---------------------------------------------------------------------------------------------------------------|
>
>
>
>
>
>
>>Starting with =
>>http://dev.eclipse.org/newslists/news.eclipse.tools.cdt/msg01403.html,
>>I was able to get the GCC ARM simulator to work.
>>
>>Neat!
>>
>>The only trick was that "info threads" causes GDB to crash=20
>>before the app is up and running.
>>
>>
>>After some frustrating hours, I figured out a workaround on=20
>>gdb.ini as follows:
>>
>>
>>target sim
>>#info threads crashes GDB
>>load
>>break main
>>run
>>#info threads no longer crashes GDB
>>
>>
>>The workaround is described at the end of this bug-report:
>>
>>http://bugs.eclipse.org/bugs/show_bug.cgi?id=3D37038
>>
>>
>>
>>- I've also fired off a bug-report to the GCC guys
>>- I got GCJ compiled code up and running in the Eclipse debugger as =
>>well.
>>
>>
>>
>
>The crash is gdb related, you should probably send the PR to
>the gdb mailing list with the backtrace.
>
>Glad to see things work out.
>
>Can I close the PR 8-)
>
>
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