int kgdb_arch_handle_exception()

in kernel/kgdb.c [128:158]

• 26 lines of code
• 7 McCabe index (conditional complexity)

int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
			       char *remcomInBuffer, char *remcomOutBuffer,
			       struct pt_regs *regs)
{
	unsigned long addr;
	char *ptr;

	undo_single_step(regs);

	switch (remcomInBuffer[0]) {
	case 's':
	case 'c':
		ptr = &remcomInBuffer[1];
		if (kgdb_hex2long(&ptr, &addr))
			regs->ret = addr;
		fallthrough;

	case 'D':
	case 'k':
		atomic_set(&kgdb_cpu_doing_single_step, -1);

		if (remcomInBuffer[0] == 's') {
			do_single_step(regs);
			atomic_set(&kgdb_cpu_doing_single_step,
				   smp_processor_id());
		}

		return 0;
	}
	return -1;
}