Hello everyone,
My application runs for a while,then I get this error message:
[00:51:19]A0=0x1 A1=0x0
[00:51:19]A2=0x1 A3=0xc1413d5c
[00:51:19]A4=0xc14278f2 A5=0xc1427af0
[00:51:19]A6=0x28cfc64 A7=0xfe5402ac
[00:51:19]A8=0x3f A9=0xc1413ce4
[00:51:19]A10=0x1 A11=0xc1413d5c
[00:51:19]A12=0xc1413c60 A13=0x1
[00:51:19]A14=0xc1427af4 A15=0x0
[00:51:19]A16=0x0 A17=0x20
[00:51:19]A18=0xc0a0cee8 A19=0x0
[00:51:19]A20=0x8 A21=0x0
[00:51:19]A22=0xfd4beb00 A23=0xf9f2be88
[00:51:19]A24=0xfa97d600 A25=0xffffe5db
[00:51:19]A26=0xccd46a A27=0x2e0a
[00:51:19]A28=0xffa97d60 A29=0xfffffa98
[00:51:19]A30=0xfee57781 A31=0x1
[00:51:19]B0=0x0 B1=0xc13b1760
[00:51:19]B2=0x0 B3=0xc13fc664
[00:51:19]B4=0x2ec B5=0xc1427a8c
[00:51:19]B6=0xc13f6300 B7=0x14000102
[00:51:19]B8=0x0 B9=0x0
[00:51:19]B10=0xc1413d80 B11=0x55c03dc
[00:51:19]B12=0x55c03dc B13=0x37e71f1
[00:51:19]B14=0xc1428ba0 B15=0xc13b1698
[00:51:19]B16=0x7fcfbebd B17=0x5352535c
[00:51:19]B18=0x1e13 B19=0xffffc3da
[00:51:19]B20=0x0 B21=0xffffe530
[00:51:19]B22=0x20f B23=0x1f
[00:51:19]B24=0xfe718367 B25=0xff3f926e
[00:51:19]B26=0xff7f0926 B27=0xa3848a
[00:51:19]B28=0x12195c B29=0x0
[00:51:19]B30=0x70 B31=0x53
[00:51:19]NTSR=0x1820f
[00:51:19]ITSR=0x20f
[00:51:19]IRP=0xc13c6d94
[00:51:19]SSR=0x1f
[00:51:19]AMR=0x0
[00:51:19]RILC=0x8
[00:51:19]ILC=0x0
[00:51:19]Exception at 0xc13f6454
[00:51:19]EFR=0x40000000 NRP=0xc13f6454
I trace the exception addr(0xc13f6454). I found the addr point to line 329 of Clock.c(Clock_workFunc function, bios 6.45.00.20).
285 Void Clock_workFunc(UArg arg0, UArg arg1)
286 {
287 Queue_Elem *elem;
288 UInt hwiKey, count;
289 UInt32 time, compare;
290 Clock_Object *obj;
291 Queue_Handle clockQ;
292
293 hwiKey = Hwi_disable();
294 time = Clock_module->ticks;
295 count = Clock_module->swiCount;
296 Clock_module->swiCount = 0;
297 Hwi_restore(hwiKey);
298
299 /* Log when count > 1, meaning Clock_swi is delayed */
300 if (count > 1) {
301 Log_write1(Clock_LW_delayed, (UArg)count);
302 }
303
304 compare = time - count;
305
306 /*
307 * Here count can be zero. When Clock_tick() runs it increments
308 * swiCount and posts the Clock_workFunc. In Clock_workFunc we
309 * get the value of swiCount atomically. Before we read swiCount, an
310 * interrupt could occur, Clock_tick() will post the swi again.
311 * That post is unnecessary as we are getting ready to process that
312 * tick. The next time this swi runs the count will be zero.
313 */
314
315 while (count) {
316
317 compare = compare + 1;
318 count = count - 1;
319
320 /* Traverse clock queue */
321
322 clockQ = Clock_Module_State_clockQ();
323 elem = Queue_head(clockQ);
324
325 while (elem != (Queue_Elem *)(clockQ)) {
326 obj = (Clock_Object *)elem;
327 elem = Queue_next(elem);
328 /* if event has timed out */
329 if ((obj->active == TRUE) && (obj->currTimeout == compare)) {
330
331 if (obj->period == 0) { /* oneshot? */
332 /* mark object idle */
333 obj->active = FALSE;
334 }
335 else { /* periodic */
336 /* refresh timeout */
337 obj->currTimeout += obj->period;
338 }
339
340 Log_write2(Clock_LM_begin, (UArg)obj, (UArg)obj->fxn);
341
342 /* call handler */
343 obj->fxn(obj->arg);
344 }
345 }
346 }
347}
My question:
What can cause my exception? Cause the obj is a null pointer, is it a bug of bios? Or my unsuitable task stacks size or something else make the obj be a null pointer in certain situations?
Every suggestion will be appreciated.
Best regards
Buga
