Debugging an Embedded QNX target running gdbserver

[nathan_h]

Hi,
I am running netbeans 7.2RC1 on ubuntu linux. I have an qnx embedded target with gdbserver running.

Anyone know how to use Netbeans to debug in this config?

I installed the gdbserver plug-in to be able to attach to the currently running gdbserver. Normally I connect with these options:
target qnx 10.1.220.24:8084

Anyway I can't get very far. As soon as I click connect I get the following error:
java.lang.NoSuchMethodError: org.netbeans.modules.cnd.debugger.gdb2.GdbDebuggerInfo.setRemoteTarget(Ljava/lang/String;)V

at org.netbeans.modules.cnd.debugger.gdbserver.GdbServerAttachPanel$GdbServerAttachController.ok(GdbServerAttachPanel.java:194)

at org.netbeans.modules.debugger.ui.actions.ConnectorPanel.ok(ConnectorPanel.java:298)

at org.netbeans.modules.debugger.ui.actions.ConnectAction$ConnectListener.actionPerformed(ConnectAction.java:171)

at org.netbeans.core.windows.services.NbPresenter$ButtonListener.actionPerformed(NbPresenter.java:1364)

[Nikolay Koldunov]

Could you attach gdblog and full exception report please?

[nathan_h]

OK, a fix went into gdbserver plugin which allows me to run the plug-in in Netbeans 7-2.

I had set netbeans to point to /opt/qnx632/host/linux/x86/usr/bin/ntoppc-gdb
which is my QNX installation of gdb.

I can start up gdbserver and open the gdb console.

I see some odd behavior. It seems like my version of gdb client is not compatible with netbeans??

Below is my log file - any suggestions?:


This log is saved to: /tmp/gdb-cmds2014878806168713192.log


NB build: 201207171143


GNU gdb 5.2.1qnx-nto
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu --target=ntoppc".
(gdb)
2-list-features
3-gdb-set print repeat 0
4-gdb-set backtrace limit 1024
5-gdb-set print elements 0
6-enable-pretty-printing
7-file-exec-and-symbols "/media/DevDisk/BTI/49AACR/"
2^error,msg="Undefined MI command: list-features"
(gdb)
3^done
(gdb)
&"No symbol \"backtrace\" in current context.\n"
4^error,msg="No symbol \"backtrace\" in current context."
(gdb)
5^done
(gdb)
6^error,msg="Undefined MI command: enable-pretty-printing"
(gdb)
&"\"/media/DevDisk/BTI/49AACR\": not in executable format: Is a directory\n"
7^error,msg="\"/media/DevDisk/BTI/49AACR\": not in executable format: Is a directory"
(gdb)
&"target qnx 10.1.220.24:8084\n"
^done
No command for record ^done


(gdb)
&"sym /src/bti/49AACR/WM10G/drivers/rubicon/bin/test_rubicon\n"
^done
No command for record ^done


(gdb)
&"attach 1671208\n"
^done,thread-id="0",frame={addr="0xfe33a740",func="TimerTimeout",args=[],from="/opt/qnx632/target/qnx6/ppcbe/lib/libc.so.2"}
No command for record ^done,thread-id="0",frame={addr="0xfe33a740",func="TimerTimeout",args=[],from="/opt/qnx632/target/qnx6/ppcbe/lib/libc.so.2"}


(gdb)
&"break test_rubicon.c:3988\n"
^done
No command for record ^done


(gdb)
&"break test_rubicon.c:4001\n"
^done
No command for record ^done


(gdb)
&"c\n"
~"[Switching to process 1671208]\n"
^done,reason="breakpoint-hit",bkptno="3",thread-id="0",frame={addr="0x48048b44",func="main",args=[{name="argc",value="2"},{name="argv",value="0x4803fd44"}],file="test_rubicon.c",line="3988"}
No command for record ^done,reason="breakpoint-hit",bkptno="3",thread-id="0",frame={addr="0x48048b44",func="main",args=[{name="argc",value="2"},{name="argv",value="0x4803fd44"}],file="test_rubicon.c",line="3988"}


(gdb)
&"set do_pause=0\n"
^done
No command for record ^done


(gdb)
&"c\n"
^done,reason="breakpoint-hit",bkptno="4",thread-id="0",frame={addr="0x48048bd4",func="main",args=[{name="argc",value="2"},{name="argv",value="0x4803fd44"}],file="test_rubicon.c",line="4001"}
No command for record ^done,reason="breakpoint-hit",bkptno="4",thread-id="0",frame={addr="0x48048bd4",func="main",args=[{name="argc",value="2"},{name="argv",value="0x4803fd44"}],file="test_rubicon.c",line="4001"}


(gdb)
60-break-disable
61-gdb-set unwindonsignal on
62-data-evaluate-expression "arg_ptr"
63-gdb-set unwindonsignal off
60^done
(gdb)
61^done
(gdb)
62^done,value="0x0"
(gdb)
63^done
(gdb)
64-break-disable
65-gdb-set unwindonsignal on
66-data-evaluate-expression "arg_ptr"
67-gdb-set unwindonsignal off
64^done
(gdb)
65^done
(gdb)
66^done,value="0x0"
(gdb)
67^done
(gdb)

[Nikolay Koldunov]

I suppose you should install gdb from the Ubuntu repository. Try using
gdb instead of gdbserver.

[nathan_h]

Correct me if I'm wrong but,
I don't think using Ubuntu gdb will work for me:
- my embedded target is running ppc and doesn't have the gcc tool chain installed, only a QNX version of gdbserver installed.
- Because of the point above, I can not add my target as a "HOST" in netbeans.
- gdbserver is a plug-in for Netbeans that allows to connect to an embedded target running gdbserver.
- The gdbserver plug-in uses gdb. The version I am using is for ppc - it is called ntoppc-gdb

[nathan_h]

After finding the latest GDB with QNX, it is now working.