I use gdb and gdbserver on target, remote debug success in shell, ti's ccs5 and codesourery,but when i try the eclipse to do the ssme thing, it fail.
"Failed to execute MI command"
"help maintenance set"
(gdb) help maintenance set
Set GDB internal variables used by the GDB maintainer.
Configure variables internal to GDB that aid in GDB's maintenance
List of maintenance set subcommands:
maintenance set dwarf2 -- Set DWARF 2 specific variables
maintenance set internal-error -- Configure what GDB does when internal-error is detected
maintenance set internal-warning -- Configure what GDB does when internal-warning is detected
maintenance set profile -- Set internal profiling
Log:
Error in final launch sequence
Failed to execute MI command:
maintenance set python print-stack off
Error message from debugger back end:
Undefined maintenance set command: "python print-stack off". Try "help maintenance set".
Related
I'm trying out STM32CubeIDE, and I've been trying to get it to work with the GDB QEMU debugging plugin that's part of the Eclipse CDT package. I've been able to create the project and debug configuration for my STM32F4-Discovery board, and the debugger partially launches, however, just as the simulator starts up, the GUI window it creates suddenly crashes and I get this error:
Error in final launch sequence
Failed to execute MI command:
-target-select remote localhost:1234
Error message from debugger back end:
Truncated register 18 in remote 'g' packet
Failed to execute MI command:
-target-select remote localhost:1234
Error message from debugger back end:
Truncated register 18 in remote 'g' packet
Truncated register 18 in remote 'g' packet
I think this is caused by some mismatch between the CDT plugin I installed and the GCC toolchain that shipped with my installation of Ubuntu 20.04. However, I'm not sure how to fix this.
Is there anything I try to fix this?
So it looks like there were a couple factors as to why this wasn't working. First off, the error messages that I was getting immediately after the GUI debugger terminated were due to an incorrect installation of the arm-none-eabi-gdb package. In order to fix this, I downloaded the package from the ARM site and followed the instructions detailed here. After installing the arm-none-eabi-gdb package again, I went into the project debug configuration settings, navigated to the "debugger" tab in this window, and then changed the GDB executable path from the variables the IDE had set for me to the actual GDB executable path (in this case /usr/bin/arm-none-eabi-gdb).
After that was done, the debugger would no longer immediately terminate, but I was still getting some errors in console shortly after it started (see below). In addition, the debugger GUI would produce no meaningful output, and Ubuntu would warn that the process had frozen.
NVIC: Bad read offset 0xd88
qemu-system-gnuarmeclipse: Attempt to set CP10/11 in SCB->CPACR, but FP is not supported yet.
To solve this, I right clicked the project in the project explorer panel of the IDE, then went to C/C++ build section, then to the Settings section under that, and then finally to the "Tool settings" section of this menu. Under "MCU settings", there are two options for "Floating point unit" and "Floating point ABI", which I changed to "None" and "Software implementation" respectively. After saving these configuration changes, I went to the system_stm32f4xx.c file under the src/ directory of the project, and commented out these lines:
/* FPU settings ------------------------------------------------------------*/
#if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
SCB->CPACR |= ((3UL << 10*2)|(3UL << 11*2)); /* set CP10 and CP11 Full Access */
#endif
After that, I cleaned the project, rebuilt it, and relaunched the debugger. It then functioned normally.
I have a setup with openocd and arm-none-eabi-gdb and I'm trying to debug a FreeRTOS fw.
I start openocd with:
openocd -f /usr/local/share/openocd/scripts/board/stm32f0discovery.cfg -c "stm32f0x.cpu configure -rtos auto"
That command works fine.
Then I run arm-none-eabi-gdb -tui and at the end of my .gdbinit I have:
target remote localhost:3333
monitor reset halt
file build/fw.elf
load
continue
focus next
But when I try to stop <ctrl>-c and start continue my fw all I get is the error:
Cannot execute this command without a live selected thread.
What am I missing?
I'm using a JLink Base debug probe.
My case is a bit different than yours, with a setup using QtCreator and its Baremetal plugin, but found a bug report where they state a workaround:
https://bugreports.qt.io/browse/QTCREATORBUG-18436
The workaround is pretty easy:
in GDB Init commands add "info threads" after load command. It fixes issue.
I tried it, and it worked, the error message was removed, and now I can see the different tasks in FreeRTOS.
I am running GDB in "mi interpreter" mode and I am using user defined hooks to detect events such as stop,quit etc.
Whenever the event occurs the hook will print some information which are redirected to a different log file.
Another application will read the contents from this log file and process it.
I have written a hook to detect GDB exit, as illustrated:
define hook-quit
set logging file D:\log\task.log
set logging on
print "GDB end detected"
set logging off
end
In GDB's console mode, the above hook executes successfully when GDB exits.
However in GDB's "mi interpreter mode", the hook fails to execute.
Is there any alternative hook (or any method) for detecting GDB exit in "mi interpreter mode".
Tested Environment:
Windows 7
Toolchain: arm-none-eabi (command: arm-none-eabi-gdb.exe --interpreter=mi D:\test.elf)
A couple of ways to do this come to mind.
One is to use Python to write at "at exit" hook that prints to the log. The Python exit hooks should be run during gdb exit.
Another is to do the writing at a different layer: either in whatever is invoking gdb -i=mi, or by writing a wrapper script that invokes gdb and then writes to the log when gdb exits.
I'm having a problem debugging a command line program on OS X. I've used this same source file with the same g++ command line hundreds of times to test things with the Crypto++ library.
Under GDB, I get the following after loading the EXE:
$ gdb ./cryptopp-test.exe
...
(gdb) r
Starting program: /Users/jwalton/cryptopp-test.exe
Unable to find Mach task port for process-id 42811: (os/kern) failure (0x5).
Under LLDB, I get the following:
$ lldb ./cryptopp-test.exe
Current executable set to './cryptopp-test.exe' (x86_64).
(lldb) r
error: initial process state wasn't stopped: exited
I've recompiled the program a few times, and I can't get it to run under a debugger. I'm getting a segfault when trying to run outside the debugger too, so that may be a symptom here also.
OS X is 10.8.5, and Xcode is 5.1.1 (5B1008). Everything is fully patched. The only thing to change recently is signing up for a developer account, which is broken thanks to Apple's DRM crap. I can't seem to get any of it to work with Xcode or the command line even though Roots and Certificates are in my Keychain. But this program does not use code signing.
What is causing the initial process state wasn't stopped: exited error, and how do I fix it?
The errors that you have received are usually a direct correlation of a codesigning issue, not with your executable, but with gdb and lldb themselves.
You have a couple of options:
Launch gdb or lldb as sudo (which ignores the codesign req to run executables)
Create a codesigning certificate for gdb or lldb in Keychain.app
Obviously the first option is quickest, but probably should be avoided as it opens up the possibility of bad things happening with elevated permissions.
With option #2 you can likely get gdb or lldb properly working by doing this:
Launch /Applications/Utilities/Keychain Access.app
Select the Keychain Access -> Certificate Assistant -> Create a Certificate...
Choose a name for the new certificate (for example lldb-cert or gdb-cert)
Set Identity Type to Self Signed Root
Set Certificate Type to Code Signing
Select the Let me override defaults option
Continue until the "Specify a Location For The Certificate" screen appears
Set Keychain to System and Continue
In the view showing your certificates, double-click on the one just created and then set "When using this certificate" to "Always Trust"
In Terminal:
codesign -f -s "gdb-cert" /path/to/gdb (or) "lldb-cert" /path/to/lldb
You might have to restart for this to effectively take hold.
There are more concise instructions here for gdb and here for lldb on the codesigning process.
How do I give commands to run before starting gdb debugging in Eclipse ?
Actually I want to execute few scripts that set environment variables (export vars) and execute a bunch of other programs before gdb process is launched from eclipse to debug my program.
I tried doing the following in debugger tab option:
<command> && <path-to-gdb-executable>
But I got the error that eclipse cannot execute gdb as given in above statement.
Please help - I actually want to execute a script called "before-launch-commands.sh" before debugging is started by gdb. I am trying to execute a cpp program under eclipse kepler.
Thanks.
The Eclipse Debug Configurations can already setup environment variables for you. I'm going to assume that that isn't sufficient, or you'd have already done it.
The first thing to do is create a new script, wrapped-gdb.sh:
#!/bin/sh
# Export any variables we need.
# Note that '.' (dot) is like an "include" statement.
. /path/to/before-launch-commands.sh
# Run GDB using the parameters passed in
exec /path/to/gdb "$#"
Next, set that script executable:
chmod +x /path/to/wrapped-gdb.sh
Finally, go to the Debugger tab in the debug configuration dialog, and in the box marked "GDB Debugger" enter /path/to/wrapped-gdb.sh.
When you launch your debug session it should now Do The Right Thing.