Node / public / precursor-lxmfchat.git / files / xous-core / kernel / src / debug / gdb / monitor.rs

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use gdbstub::target;

use gdbstub::target::ext::monitor_cmd::MonitorCmd;

use super::XousTarget;

impl MonitorCmd for XousTarget {

fn handle_monitor_cmd(

&mut self,

cmd: &[u8],

mut out: target::ext::monitor_cmd::ConsoleOutput<'_>,

) -> Result<(), Self::Error> {

let Ok(cmd) = core::str::from_utf8(cmd) else {

gdbstub::outputln!(out, "command must be valid UTF-8");

return Ok(());

};

if cmd.starts_with("pr") {

if let Some(pid_str) = cmd.split_ascii_whitespace().nth(1) {

// Parse the new PID. If it isn't a valid string, then this will be None

let new_pid = xous_kernel::PID::new(u8::from_str_radix(pid_str, 10).unwrap_or_default());

if let Some(previous_pid) = self.pid {

crate::services::SystemServices::with_mut(|system_services| {

system_services.resume_process_from_debug(previous_pid).unwrap()

});

}

// Disallow debugging the kernel. Sad times.

if new_pid.map(|v| v.get() == 1).unwrap_or(false) {

gdbstub::outputln!(out, "Kernel cannot debug itself");

self.pid = None;

return Ok(());

}

self.pid = new_pid;

if let Some(new_pid) = self.pid {

gdbstub::outputln!(out, "Now debugging PID {}", new_pid);

crate::services::SystemServices::with_mut(|system_services| {

system_services.pause_process_for_debug(new_pid).unwrap()

});

} else {

gdbstub::outputln!(out, "No process is selected for debugging");

}

return Ok(());

}

gdbstub::outputln!(out, "Available processes:");

crate::services::SystemServices::with(|system_services| {

for process in &system_services.processes {

if !process.free() {

gdbstub::outputln!(

out,

" {:2} {} {}",

process.pid,

if self.pid.map(|p| p == process.pid).unwrap_or(false) { '*' } else { ' ' },

system_services.process_name(process.pid).unwrap_or("")

);

}

}

});

} else if cmd.starts_with("h") {

gdbstub::outputln!(out, "Here is a list of help commands:");

gdbstub::outputln!(out, " process Print a list of processes");

gdbstub::outputln!(out, " process [n] Switch to debugging process [n]");

} else {

gdbstub::outputln!(out, "command not found -- try 'mon help'");

}

Ok(())

}

}