/**
 * Shuts down the gnu/linux console.
 *
 * This is done in the reverse order the service was started up.
 *
 * @param p0 the internal memory array
 * @param p1 the service thread
 * @param p2 the service thread interrupt
 */
void shutdown_gnu_linux_console(void* p0, void* p1, void* p2) {

    log_terminated_message((void*) INFORMATION_LEVEL_LOG_MODEL, (void*) L"Shutdown gnu/linux console.");

    // The gnu/linux console input- and output stream.
    FILE* ip = (FILE*) *NULL_POINTER_MEMORY_MODEL;
    FILE* op = (FILE*) *NULL_POINTER_MEMORY_MODEL;

    // Get gnu/linux console input- and output stream.
    copy_array_forward((void*) &ip, p0, (void*) POINTER_PRIMITIVE_MEMORY_ABSTRACTION, (void*) PRIMITIVE_MEMORY_MODEL_COUNT, (void*) VALUE_PRIMITIVE_MEMORY_NAME, (void*) GNU_LINUX_CONSOLE_INPUT_FILE_DESCRIPTOR_INTERNAL_MEMORY_MEMORY_NAME);
    copy_array_forward((void*) &op, p0, (void*) POINTER_PRIMITIVE_MEMORY_ABSTRACTION, (void*) PRIMITIVE_MEMORY_MODEL_COUNT, (void*) VALUE_PRIMITIVE_MEMORY_NAME, (void*) GNU_LINUX_CONSOLE_OUTPUT_FILE_DESCRIPTOR_INTERNAL_MEMORY_MEMORY_NAME);

    // Only deallocate gnu/linux console resources if at least one,
    // the input- OR output stream internal is null.
    if ((ip != *NULL_POINTER_MEMORY_MODEL) && (op != *NULL_POINTER_MEMORY_MODEL)) {

        // Interrupt gnu/linux console service thread.
        interrupt_thread(p1, p2);

        // The old termios settings.
        struct termios* to = (struct termios*) *NULL_POINTER_MEMORY_MODEL;
        // The new termios settings.
        struct termios* tn = (struct termios*) *NULL_POINTER_MEMORY_MODEL;
        // The character buffer used for input in the thread function.
        void* b = *NULL_POINTER_MEMORY_MODEL;
        void* bc = *NULL_POINTER_MEMORY_MODEL;
        void* bs = *NULL_POINTER_MEMORY_MODEL;

        // Get gnu/linux console internals.
        copy_array_forward((void*) &ip, p0, (void*) POINTER_PRIMITIVE_MEMORY_ABSTRACTION, (void*) PRIMITIVE_MEMORY_MODEL_COUNT, (void*) VALUE_PRIMITIVE_MEMORY_NAME, (void*) GNU_LINUX_CONSOLE_INPUT_FILE_DESCRIPTOR_INTERNAL_MEMORY_MEMORY_NAME);
        copy_array_forward((void*) &op, p0, (void*) POINTER_PRIMITIVE_MEMORY_ABSTRACTION, (void*) PRIMITIVE_MEMORY_MODEL_COUNT, (void*) VALUE_PRIMITIVE_MEMORY_NAME, (void*) GNU_LINUX_CONSOLE_OUTPUT_FILE_DESCRIPTOR_INTERNAL_MEMORY_MEMORY_NAME);
        copy_array_forward((void*) &to, p0, (void*) POINTER_PRIMITIVE_MEMORY_ABSTRACTION, (void*) PRIMITIVE_MEMORY_MODEL_COUNT, (void*) VALUE_PRIMITIVE_MEMORY_NAME, (void*) GNU_LINUX_CONSOLE_ORIGINAL_ATTRIBUTES_INTERNAL_MEMORY_MEMORY_NAME);
        copy_array_forward((void*) &tn, p0, (void*) POINTER_PRIMITIVE_MEMORY_ABSTRACTION, (void*) PRIMITIVE_MEMORY_MODEL_COUNT, (void*) VALUE_PRIMITIVE_MEMORY_NAME, (void*) GNU_LINUX_CONSOLE_WORKING_ATTRIBUTES_INTERNAL_MEMORY_MEMORY_NAME);
        // Get character buffer.
        copy_array_forward((void*) &b, p0, (void*) POINTER_PRIMITIVE_MEMORY_ABSTRACTION, (void*) PRIMITIVE_MEMORY_MODEL_COUNT, (void*) VALUE_PRIMITIVE_MEMORY_NAME, (void*) GNU_LINUX_CONSOLE_THREAD_CHARACTER_BUFFER_INTERNAL_MEMORY_MEMORY_NAME);
        copy_array_forward((void*) &bc, p0, (void*) POINTER_PRIMITIVE_MEMORY_ABSTRACTION, (void*) PRIMITIVE_MEMORY_MODEL_COUNT, (void*) VALUE_PRIMITIVE_MEMORY_NAME, (void*) GNU_LINUX_CONSOLE_THREAD_CHARACTER_BUFFER_COUNT_INTERNAL_MEMORY_MEMORY_NAME);
        copy_array_forward((void*) &bs, p0, (void*) POINTER_PRIMITIVE_MEMORY_ABSTRACTION, (void*) PRIMITIVE_MEMORY_MODEL_COUNT, (void*) VALUE_PRIMITIVE_MEMORY_NAME, (void*) GNU_LINUX_CONSOLE_THREAD_CHARACTER_BUFFER_SIZE_INTERNAL_MEMORY_MEMORY_NAME);

        // Get file descriptor for file stream.
        // CAUTION! The stream "stdin" must be used instead of "stdout" here!
        int d = fileno(ip);

        // Reset terminal to old settings.
        tcsetattr(d, TCSANOW, (void*) to);

/*??
        // Deallocate input- and output stream.
        //
        // CAUTION! DO NOT deallocate ip and op because they refer to stdin and stdout of the system!
        // This might be changed at a (much) later point in CYBOI development.
        deallocate((void*) &ip, (void*) PRIMITIVE_MEMORY_MODEL_COUNT, (void*) INTEGER_PRIMITIVE_MEMORY_ABSTRACTION);
        deallocate((void*) &op, (void*) PRIMITIVE_MEMORY_MODEL_COUNT, (void*) INTEGER_PRIMITIVE_MEMORY_ABSTRACTION);
*/
        // Deallocate termios settings.
        free(to);
        free(tn);

        // Deallocate character buffer.
        deallocate_model((void*) &b, (void*) bs, (void*) WIDE_CHARACTER_MEMORY_ABSTRACTION);
        // Deallocate character buffer count, size.
        deallocate_model((void*) &bc, (void*) PRIMITIVE_MEMORY_MODEL_COUNT, (void*) INTEGER_MEMORY_ABSTRACTION);
        deallocate_model((void*) &bs, (void*) PRIMITIVE_MEMORY_MODEL_COUNT, (void*) INTEGER_MEMORY_ABSTRACTION);

    } else {

        log_terminated_message((void*) WARNING_LEVEL_LOG_MODEL, (void*) L"Could not shutdown gnu/linux console. There is no gnu/linux console running.");
    }
}
Ejemplo n.º 2
0
 inline void interrupt_thread(thread_id_type const& id, error_code& ec = throws)
 {
     interrupt_thread(id, true, ec);
 }
Ejemplo n.º 3
0
/**
 * NOTE: The technique is not the same as that used in TinyVM.
 * The return value indicates the impact of the call on the VM
 * system. EXEC_CONTINUE normal return the system should return to the return
 * address provided by the VM. EXEC_RUN The call has modified the value of
 * VM PC and this should be used to restart execution. EXEC_RETRY The call
 * needs to be re-tried (typically for a GC failure), all global state
 * should be left intact, the PC has been set appropriately.
 *
 */
int dispatch_native(TWOBYTES signature, STACKWORD * paramBase)
{
  STACKWORD p0 = paramBase[0];
  switch (signature) {
  case wait_4_5V:
    return monitor_wait((Object *) word2ptr(p0), 0);
  case wait_4J_5V:
    return monitor_wait((Object *) word2ptr(p0), ((int)paramBase[1] > 0 ? 0x7fffffff : paramBase[2]));
  case notify_4_5V:
    return monitor_notify((Object *) word2ptr(p0), false);
  case notifyAll_4_5V:
    return monitor_notify((Object *) word2ptr(p0), true);
  case start_4_5V:
    // Create thread, allow for instruction restart
    return init_thread((Thread *) word2ptr(p0));
  case yield_4_5V:
    schedule_request(REQUEST_SWITCH_THREAD);
    break;
  case sleep_4J_5V:
    sleep_thread(((int)p0 > 0 ? 0x7fffffff : paramBase[1]));
    schedule_request(REQUEST_SWITCH_THREAD);
    break;
  case getPriority_4_5I:
    push_word(get_thread_priority((Thread *) word2ptr(p0)));
    break;
  case setPriority_4I_5V:
    {
      STACKWORD p = (STACKWORD) paramBase[1];

      if (p > MAX_PRIORITY || p < MIN_PRIORITY)
	return throw_new_exception(JAVA_LANG_ILLEGALARGUMENTEXCEPTION);
      else
	set_thread_priority((Thread *) word2ptr(p0), p);
    }
    break;
  case currentThread_4_5Ljava_3lang_3Thread_2:
    push_ref(ptr2ref(currentThread));
    break;
  case interrupt_4_5V:
    interrupt_thread((Thread *) word2ptr(p0));
    break;
  case interrupted_4_5Z:
    {
      JBYTE i = currentThread->interruptState != INTERRUPT_CLEARED;

      currentThread->interruptState = INTERRUPT_CLEARED;
      push_word(i);
    }
    break;
  case isInterrupted_4_5Z:
    push_word(((Thread *) word2ptr(p0))->interruptState
	      != INTERRUPT_CLEARED);
    break;
  case join_4_5V:
    join_thread((Thread *) word2ptr(p0), 0);
    break;
  case join_4J_5V:
    join_thread((Thread *) word2obj(p0), paramBase[2]);
    break;
  case halt_4I_5V:
    schedule_request(REQUEST_EXIT);
    break;
  case shutdown_4_5V:
    shutdown_program(false);
    break;
  case currentTimeMillis_4_5J:
    push_word(0);
    push_word(systick_get_ms());
    break;
  case readSensorValue_4I_5I:
    push_word(sp_read(p0, SP_ANA));
    break;
  case setPowerTypeById_4II_5V:
    sp_set_power(p0, paramBase[1]);
    break;
  case freeMemory_4_5J:
    push_word(0);
    push_word(getHeapFree());
    break;
  case totalMemory_4_5J:
    push_word(0);
    push_word(getHeapSize());
    break;
  case floatToRawIntBits_4F_5I:	// Fall through
  case intBitsToFloat_4I_5F:
    push_word(p0);
    break;
  case doubleToRawLongBits_4D_5J:	// Fall through
  case longBitsToDouble_4J_5D:
    push_word(p0);
    push_word(paramBase[1]);
    break;
  case drawString_4Ljava_3lang_3String_2II_5V:
    {
      String *p = (String *)word2obj(p0);
      Object *charArray;
      if (!p) return throw_new_exception(JAVA_LANG_NULLPOINTEREXCEPTION);
      charArray = (Object *) word2ptr(get_word_4_ns(fields_start(p)));
      if (!charArray) return throw_new_exception(JAVA_LANG_NULLPOINTEREXCEPTION);
      display_goto_xy(paramBase[1], paramBase[2]);
      display_jstring(p);
    }
    break;
  case drawInt_4III_5V:
    display_goto_xy(paramBase[1], paramBase[2]);
    display_int(p0, 0);
    break;
  case drawInt_4IIII_5V:
     display_goto_xy(paramBase[2], paramBase[3]);
     display_int(p0, paramBase[1]);
    break;   
  case asyncRefresh_4_5V:
    display_update();
    break;
  case clear_4_5V:
    display_clear(0);
    break;
  case getDisplay_4_5_1B:
    push_word(display_get_array());
    break;
  case setAutoRefreshPeriod_4I_5I:
    push_word(display_set_auto_update_period(p0));
    break;
  case getRefreshCompleteTime_4_5I:
    push_word(display_get_update_complete_time());
    break;
  case bitBlt_4_1BIIII_1BIIIIIII_5V:
    {
      Object *src = word2ptr(p0);
      Object *dst = word2ptr(paramBase[5]);
      display_bitblt((byte *)(src != NULL ?jbyte_array(src):NULL), paramBase[1], paramBase[2], paramBase[3], paramBase[4], (byte *)(dst!=NULL?jbyte_array(dst):NULL), paramBase[6], paramBase[7], paramBase[8], paramBase[9], paramBase[10], paramBase[11], paramBase[12]);
      break;
    }
  case getSystemFont_4_5_1B:
    push_word(display_get_font());
    break;
  case setContrast_4I_5V:
    nxt_lcd_set_pot(p0);
    break;
  case getBatteryStatus_4_5I:
    push_word(battery_voltage());
    break;
  case getButtons_4_5I:
    push_word(buttons_get());
    break;
  case getTachoCountById_4I_5I:
    push_word(nxt_motor_get_count(p0));
    break;
  case controlMotorById_4III_5V:
    nxt_motor_set_speed(p0, paramBase[1], paramBase[2]); 
    break;
  case resetTachoCountById_4I_5V:
    nxt_motor_set_count(p0, 0);
    break;
  case i2cEnableById_4II_5V:
    if (i2c_enable(p0, paramBase[1]) == 0)
      return EXEC_RETRY;
    else
      break;
  case i2cDisableById_4I_5V:
    i2c_disable(p0);
    break;
  case i2cStatusById_4I_5I:
    push_word(i2c_status(p0));
    break;
  case i2cStartById_4II_1BIII_5I:
    {
    	Object *p = word2obj(paramBase[2]);
    	JBYTE *byteArray = p ? jbyte_array(p) + paramBase[3] : NULL;
    	push_word(i2c_start(p0,
    	                    paramBase[1],
    	                    (U8 *)byteArray,
    	                    paramBase[4],
    	                    paramBase[5]));
    }
    break; 
  case i2cCompleteById_4I_1BII_5I:
    {
    	Object *p = word2ptr(paramBase[1]);
    	JBYTE *byteArray = p ? jbyte_array(p) + paramBase[2] : NULL;
    	push_word(i2c_complete(p0,
    	                       (U8 *)byteArray,
    	                       paramBase[3]));
    }
    break; 
  case playFreq_4III_5V:
    sound_freq(p0,paramBase[1], paramBase[2]);
    break;
  case btGetBC4CmdMode_4_5I:
    push_word(bt_get_mode());
    break;
  case btSetArmCmdMode_4I_5V:
    if (p0 == 0) bt_set_arm7_cmd();
    else bt_clear_arm7_cmd(); 
    break;
  case btSetResetLow_4_5V:
    bt_set_reset_low();
    break;
  case btSetResetHigh_4_5V:
    bt_set_reset_high();
    break;
  case btWrite_4_1BII_5I:
    {
      Object *p = word2ptr(p0);
      byte *byteArray = (byte *) jbyte_array(p);
      push_word(bt_write(byteArray, paramBase[1], paramBase[2]));                      
    }
    break;
  case btRead_4_1BII_5I:
    {
      Object *p = word2ptr(p0);
      byte *byteArray = (byte *) jbyte_array(p);
      push_word(bt_read(byteArray, paramBase[1], paramBase[2]));                      
    }
    break;
  case btPending_4_5I:
    {
      push_word(bt_event_check(0xffffffff));
    }
    break;
  case btEnable_4_5V:
    if (bt_enable() == 0)
      return EXEC_RETRY;
    else
      break;
  case btDisable_4_5V:
    bt_disable();
    break;
  case usbRead_4_1BII_5I:
     {
      Object *p = word2ptr(p0);
      byte *byteArray = (byte *) jbyte_array(p);
      push_word(udp_read(byteArray,paramBase[1], paramBase[2]));
    } 
    break;
  case usbWrite_4_1BII_5I:
     {
      Object *p = word2ptr(p0);
      byte *byteArray = (byte *) jbyte_array(p);
      push_word(udp_write(byteArray,paramBase[1], paramBase[2]));                      
    }
    break; 
  case usbStatus_4_5I:
    {
      push_word(udp_event_check(0xffffffff));
    }
    break;
  case usbEnable_4I_5V:
    {
      udp_enable(p0);
    }
    break;
  case usbDisable_4_5V:
    {
      udp_disable();
    }
    break;
  case usbReset_4_5V:
    udp_reset();
    break; 
  case usbSetSerialNo_4Ljava_3lang_3String_2_5V: 
    {
      byte *p = word2ptr(p0);
      int len;
      Object *charArray = (Object *) word2ptr(get_word_4_ns(fields_start(p)));

      len = get_array_length(charArray);
      udp_set_serialno((U8 *)jchar_array(charArray), len);
    }
    break;
  case usbSetName_4Ljava_3lang_3String_2_5V:
    {
      byte *p = word2ptr(p0);
      int len;
      Object *charArray = (Object *) word2ptr(get_word_4_ns(fields_start(p)));

      len = get_array_length(charArray);
      udp_set_name((U8 *)jchar_array(charArray), len);
    }
    break;
  case flashWritePage_4_1BI_5I:
    {
      Object *p = word2ptr(p0);
      unsigned long *intArray = (unsigned long *) jint_array(p);
      push_word(flash_write_page(intArray,paramBase[1]));                      
    }
    break;
  case flashReadPage_4_1BI_5I:
    {
      Object *p = word2ptr(p0);
      unsigned long *intArray = (unsigned long *) jint_array(p);
      push_word(flash_read_page(intArray,paramBase[1]));                      
    }
    break;
  case flashExec_4II_5I:
    push_word(run_program((byte *)(&FLASH_BASE[(p0*FLASH_PAGE_SIZE)]), paramBase[1]));
    break;
  case playSample_4IIIII_5V:
    sound_play_sample(((unsigned char *) &FLASH_BASE[(p0*FLASH_PAGE_SIZE)]) + paramBase[1],paramBase[2],paramBase[3],paramBase[4]);
    break;
  case playQueuedSample_4_1BIIII_5I:
    push_word(sound_add_sample((U8 *)jbyte_array(word2obj(p0)) + paramBase[1],paramBase[2],paramBase[3],paramBase[4]));
    break;
  case getTime_4_5I:
    push_word(sound_get_time());
    break;
  case getDataAddress_4Ljava_3lang_3Object_2_5I:
    if (is_array(word2obj(p0)))
      push_word (ptr2word ((byte *) array_start(word2ptr(p0))));
    else
      push_word (ptr2word ((byte *) fields_start(word2ptr(p0))));
    break;
  case getObjectAddress_4Ljava_3lang_3Object_2_5I:
    push_word(p0);
    break;
  case gc_4_5V:
    // Restartable garbage collection
    return garbage_collect();
  case shutDown_4_5V:
    shutdown(); // does not return
  case boot_4_5V:
    display_clear(1);
    while (1) nxt_avr_firmware_update_mode(); // does not return 
  case arraycopy_4Ljava_3lang_3Object_2ILjava_3lang_3Object_2II_5V:
    return arraycopy(word2ptr(p0), paramBase[1], word2ptr(paramBase[2]), paramBase[3], paramBase[4]);
  case executeProgram_4I_5V:
    // Exceute program, allow for instruction re-start
    return execute_program(p0);
  case setDebug_4_5V:
    set_debug(word2ptr(p0));
    break;
  case eventOptions_4II_5I:
    {
      byte old = debugEventOptions[p0];
      debugEventOptions[p0] = (byte)paramBase[1];
      push_word(old);
    }
    break;
  case suspendThread_4Ljava_3lang_3Object_2_5V:
    suspend_thread(ref2ptr(p0));
    break;
  case resumeThread_4Ljava_3lang_3Object_2_5V:
    resume_thread(ref2ptr(p0));
    break;
  case getProgramExecutionsCount_4_5I:
    push_word(gProgramExecutions);
    break;
  case getFirmwareRevision_4_5I:
    push_word((STACKWORD) getRevision());
    break;
  case getFirmwareRawVersion_4_5I:
    push_word((STACKWORD) VERSION_NUMBER); 
    break;
  case hsEnable_4II_5V:
    {
      if (hs_enable((int)p0, (int)paramBase[1]) == 0)
        return EXEC_RETRY;
    }
    break;
  case hsDisable_4_5V:
    {
      hs_disable();
    }
    break;
  case hsWrite_4_1BII_5I:
    {
      Object *p = word2ptr(p0);
      byte *byteArray = (byte *) jbyte_array(p);
      push_word(hs_write(byteArray, paramBase[1], paramBase[2]));                      
    }
    break;
  case hsRead_4_1BII_5I:
    {
      Object *p = word2ptr(p0);
      byte *byteArray = (byte *) jbyte_array(p);
      push_word(hs_read(byteArray, paramBase[1], paramBase[2]));                      
    }
    break;
  case hsPending_4_5I:
    {
      push_word(hs_pending());
    }
    break;
  case hsSend_4BB_1BII_1C_5I:
    {
      Object *p = word2ptr(paramBase[2]);
      U8 *data = (U8 *)jbyte_array(p);
      p = word2ptr(paramBase[5]);
      U16 *crc = (U16 *)jchar_array(p);
      push_word(hs_send((U8) p0, (U8)paramBase[1], data, paramBase[3], paramBase[4], crc));
    }
    break;
  case hsRecv_4_1BI_1CI_5I:
    {
      Object *p = word2ptr(p0);
      U8 *data = (U8 *)jbyte_array(p);
      p = word2ptr(paramBase[2]);
      U16 *crc = (U16 *)jchar_array(p);
      push_word(hs_recv(data, paramBase[1], crc, paramBase[3]));
    }
    break;
    
  case getUserPages_4_5I:
    push_word(FLASH_MAX_PAGES - flash_start_page);
    break;
  case setVMOptions_4I_5V:
    gVMOptions = p0;
    break;
  case getVMOptions_4_5I:
    push_word(gVMOptions);
    break;
  case isAssignable_4II_5Z:
    push_word(is_assignable(p0, paramBase[1]));
    break;
  case cloneObject_4Ljava_3lang_3Object_2_5Ljava_3lang_3Object_2:
    {
      Object *newObj = clone((Object *)ref2obj(p0));
      if (newObj == NULL) return EXEC_RETRY;
      push_word(obj2ref(newObj));
    }
    break;
  case memPeek_4III_5I:
    push_word(mem_peek(p0, paramBase[1], paramBase[2]));
    break;
  case memCopy_4Ljava_3lang_3Object_2IIII_5V:
    mem_copy(word2ptr(p0), paramBase[1], paramBase[2], paramBase[3], paramBase[4]);
    break;
  case memGetReference_4II_5Ljava_3lang_3Object_2:
    push_word(mem_get_reference(p0, paramBase[1]));
    break;
  case setSensorPin_4III_5V:
    sp_set(p0, paramBase[1], paramBase[2]);
    break;
  case getSensorPin_4II_5I:
    push_word(sp_get(p0, paramBase[1]));
    break;
  case setSensorPinMode_4III_5V:
    sp_set_mode(p0, paramBase[1], paramBase[2]);
    break;
  case readSensorPin_4II_5I:
    push_word(sp_read(p0, paramBase[1]));
    break;
  case nanoTime_4_5J:
    {
      U64 ns = systick_get_ns();
      push_word(ns >> 32);
      push_word(ns);
    }
    break;
  case createStackTrace_4Ljava_3lang_3Thread_2Ljava_3lang_3Object_2_5_1I:
    {
      Object *trace = create_stack_trace((Thread *)ref2obj(p0), ref2obj(paramBase[1]));
      if (trace == NULL) return EXEC_RETRY;
      push_word(obj2ref(trace));
    }
    break;
  case registerEvent_4_5I:
    push_word(register_event((NXTEvent *) ref2obj(p0)));
    break;
  case unregisterEvent_4_5I:
    push_word(unregister_event((NXTEvent *) ref2obj(p0)));
    break;
  case changeEvent_4II_5I:
    push_word(change_event((NXTEvent *) ref2obj(p0), paramBase[1], paramBase[2]));
    break;
  case isInitialized_4I_5Z:
    push_word(is_initialized_idx(p0));
    break;
  case allocate_4II_5Ljava_3lang_3Object_2:
    {
      Object *allocated;
      if(paramBase[1]>0){
        allocated=new_single_array(p0,paramBase[1]);
      }else{
        allocated=new_object_for_class(p0);
      }
      if(allocated == NULL) return EXEC_RETRY;
      push_word(obj2ref(allocated));
    }
    break;
  case memPut_4IIII_5V:
    store_word_ns((byte *)(memory_base[p0] + paramBase[1]), paramBase[2],paramBase[3]);
    break;
  case notifyEvent_4ILjava_3lang_3Thread_2_5Z:
    push_word(debug_event(paramBase[1], NULL, (Thread*) ref2obj(paramBase[2]), 0, 0, 0, 0));
    break;
  case setThreadRequest_4Ljava_3lang_3Thread_2Llejos_3nxt_3debug_3SteppingRequest_2_5V:
    {
      Thread *th = (Thread*) ref2obj(p0);
      th->debugData = (REFERENCE) paramBase[1];
      // currently we only get stepping requests
      if(paramBase[1])
        th->flags |= THREAD_STEPPING;
      else
        th->flags &= ~THREAD_STEPPING;
    }
    break;
  case isStepping_4Ljava_3lang_3Thread_2_5Z:
    {
      Thread *th = (Thread*) ref2obj(p0);
      push_word(is_stepping(th));
    }
    break;
  case setBreakpointList_4_1Llejos_3nxt_3debug_3Breakpoint_2I_5V:
    breakpoint_set_list((Breakpoint**) array_start(p0), paramBase[1]);
    break;
  case enableBreakpoint_4Llejos_3nxt_3debug_3Breakpoint_2Z_5V:
    breakpoint_enable((Breakpoint*) word2ptr(p0), (boolean) paramBase[1]);
    break;
  case firmwareExceptionHandler_4Ljava_3lang_3Throwable_2II_5V:
    firmware_exception_handler((Throwable *)p0, paramBase[1], paramBase[2]);
    break;
  case exitThread_4_5V:
    currentThread->state = DEAD;
    schedule_request(REQUEST_SWITCH_THREAD);
    break;
  case updateThreadFlags_4Ljava_3lang_3Thread_2II_5I:
    ((Thread *)p0)->flags |= paramBase[1];
    ((Thread *)p0)->flags &= ~paramBase[2];
//printf("m %x %d\n", p0, ((Thread *)p0)->flags);
    push_word(((Thread *)p0)->flags);
    break;
    
  default:
    return throw_new_exception(JAVA_LANG_NOSUCHMETHODERROR);
  }
  return EXEC_CONTINUE;
}