mango/kernel/panic.c

#include <stdarg.h>
#include <socks/machine/panic.h>
#include <socks/libc/stdio.h>
#include <socks/printk.h>
#include <socks/sched.h>
#include <socks/cpu.h>

static int has_panicked = 0;

void panic_irq(struct cpu_context *ctx, const char *fmt, ...)
{
	char buf[512];
	va_list args;
	va_start(args, fmt);
	vsnprintf(buf, sizeof(buf), fmt, args);
	va_end(args);

	printk("---[ kernel panic: %s", buf);
	printk("kernel: " BUILD_ID ", compiler version: " __VERSION__);

	struct task *task = current_task();
	struct thread *thr = current_thread();

	if (task && thr) {
		printk("task: %s (id: %d, thread: %d)", task->t_name, task->t_id, thr->tr_id);
	} else {
		printk("task: [bootstrap]");
	}

	printk("cpu: %u", this_cpu());

	ml_print_cpu_state(ctx);

	if (READ_ONCE(has_panicked)) {
		ml_halt_cpu();
	}

	WRITE_ONCE(has_panicked, 1);

	printk("---[ end kernel panic: %s", buf);
	ml_halt_cpu();
}