Function lwp_backtrace_frame

components/lwp/lwp.c:773–807

* @brief Prints a backtrace of the current thread's call stack * * @param[in] uthread The thread to backtrace (must be associated with an LWP) * @param[in] frame Pointer to the initial stack frame * * @return RT_EOK on success, -RT_ERROR on failure * * @note This function prints a backtrace of the call stack for the specified user thread, * providing addresses that can be used with a

 *       providing addresses that can be used with addr2line to get file and line information.
 */
rt_err_t lwp_backtrace_frame(rt_thread_t uthread, struct rt_hw_backtrace_frame *frame)
{
    rt_err_t rc = -RT_ERROR;
    long nesting = 0;
    char **argv;
    rt_lwp_t lwp;

    if (uthread && uthread->lwp && rt_scheduler_is_available())
    {
        lwp = uthread->lwp;
        argv = lwp_get_command_line_args(lwp);
        if (argv)
        {
            rt_kprintf("please use: addr2line -e %s -a -f\n", argv[0]);
            lwp_free_command_line_args(argv);
        }
        else
        {
            rt_kprintf("please use: addr2line -e %s -a -f\n", lwp->cmd);
        }

        while (nesting < RT_BACKTRACE_LEVEL_MAX_NR)
        {
            rt_kprintf(" 0x%lx", frame->pc);
            if (rt_hw_backtrace_frame_unwind(uthread, frame))
            {
                break;
            }
            nesting++;
        }
        rt_kprintf("\n");
        rc = RT_EOK;
    }
    return rc;
}