Subversion Repositories HelenOS

void udebug_breakpoint_event(uintptr_t addr)

{

    call_t *call;

    ipl_t ipl;

    udebug_event_t etype;

    etype = UDEBUG_EVENT_BREAKPOINT;

    ipl = interrupts_disable();

    spinlock_lock(&THREAD->debug_lock);

    /* Must only generate events when in debugging session and have go */

    if (THREAD->debug_active != true ||

        THREAD->debug_stop == true ||

        (TASK->debug_evmask & UDEBUG_EVMASK(etype)) == 0) {

        spinlock_unlock(&THREAD->debug_lock);

        interrupts_restore(ipl);

        return;

    }

    klog_printf("udebug_breakpoint_event");

    call = THREAD->debug_go_call;

    IPC_SET_RETVAL(call->data, 0);

    IPC_SET_ARG1(call->data, etype);

    IPC_SET_ARG2(call->data, addr);

    /*

     * Make sure debug_stop is true when going to sleep

     * in case we get woken up by DEBUG_END. (At which

     * point it must be back to the initial true value).

     */

    THREAD->debug_stop = true;

    THREAD->cur_event = etype;

    spinlock_unlock(&THREAD->debug_lock);

    klog_printf("- send answer");

    spinlock_lock(&TASK->lock);

    ipc_answer(&TASK->answerbox, THREAD->debug_go_call);

    spinlock_unlock(&TASK->lock);

    interrupts_restore(ipl);

    udebug_wait_for_go(&THREAD->go_wq);

}