Connecting a debugger while a program is running from a basic image

To connect a debugger to the GDB server of the kernel while the program is running in QEMU using the Visual Studio Code extension:

  1. Add an infinite loop to the main function of the program. This enables the debugger to connect to the running program.
  2. Set a breakpoint in the program source code before the fragment to be debugged.
  3. Build the program. You must use the CMake commands of the kpa library to pack a program into a KPA package.
  4. Run a basic KasperskyOS image from KasperskyOS Community Edition.
  5. On the side bar of Visual Studio Code, click Run and debug > create a launch.json file and then select KasperskyOS Debugger.

    This will create a debug configuration file named launch.json.

  6. In the launch.json file, in the field of the configuration named (kos/gdb) Attach to process, specify the path to the binary file of your program resulting from the build.
  7. Start the program in the basic image.
  8. Start debugging by clicking the (kos/gdb) Attach to process button on the lower pane.
  9. In the drop-down list, select the configuration named (kos/gdb) Attach to process and select the name of the program to debug.
  10. The debug console will show a message stating that the program is ready for debugging. Click Continue, and program execution will be stopped at the breakpoint that you selected at step 2.
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