The petalinux-util --gdb command is a wrapper around the standard GNU
GDB debugger and simply launches the GDB debugger in the current terminal. Executing
petalinux-util --gdb --help at the terminal prompt provides verbose
GDB options that can be used.
For GDB GUI-based debugging, use the AMD Vitis™ software platform. For more information regarding GDB, see Vitis Unified Software Platform Documentation: Embedded Software Development (UG1400).