📄 os_task.lst
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434 return (OS_ERR_TASK_DEL);
\ 00000058 3D20 MOVS R0,#+61
\ 0000005A 64E0 B.N ??OSTaskDel_1
435 }
436 y = ptcb->OSTCBY;
\ ??OSTaskDel_6:
\ 0000005C 2E00 MOVS R6,R5
\ 0000005E 2C36 ADDS R6,R6,#+44
\ 00000060 3079 LDRB R0,[R6, #+4]
437 OSRdyTbl[y] &= ~ptcb->OSTCBBitX;
\ 00000062 .... LDR.N R1,??DataTable15 ;; OSRdyTbl
\ 00000064 0918 ADDS R1,R1,R0
\ 00000066 0A78 LDRB R2,[R1, #+0]
\ 00000068 7379 LDRB R3,[R6, #+5]
\ 0000006A 9A43 BICS R2,R2,R3
\ 0000006C 0A70 STRB R2,[R1, #+0]
438 if (OSRdyTbl[y] == 0) { /* Make task not ready */
\ 0000006E 04D1 BNE.N ??OSTaskDel_7
439 OSRdyGrp &= ~ptcb->OSTCBBitY;
\ 00000070 .... LDR.N R1,??DataTable16 ;; OSRdyGrp
\ 00000072 0A78 LDRB R2,[R1, #+0]
\ 00000074 B379 LDRB R3,[R6, #+6]
\ 00000076 9A43 BICS R2,R2,R3
\ 00000078 0A70 STRB R2,[R1, #+0]
440 }
441
442 #if OS_EVENT_EN
443 pevent = ptcb->OSTCBEventPtr;
\ ??OSTaskDel_7:
\ 0000007A E969 LDR R1,[R5, #+28]
444 if (pevent != (OS_EVENT *)0) { /* If task is waiting on event */
\ 0000007C 0029 CMP R1,#+0
\ 0000007E 0BD0 BEQ.N ??OSTaskDel_8
445 pevent->OSEventTbl[y] &= ~ptcb->OSTCBBitX;
\ 00000080 0818 ADDS R0,R1,R0
\ 00000082 C27A LDRB R2,[R0, #+11]
\ 00000084 7379 LDRB R3,[R6, #+5]
\ 00000086 9A43 BICS R2,R2,R3
\ 00000088 C272 STRB R2,[R0, #+11]
446 if (pevent->OSEventTbl[y] == 0) { /* ... remove task from ... */
\ 0000008A C07A LDRB R0,[R0, #+11]
\ 0000008C 0028 CMP R0,#+0
\ 0000008E 03D1 BNE.N ??OSTaskDel_8
447 pevent->OSEventGrp &= ~ptcb->OSTCBBitY; /* ... event ctrl block */
\ 00000090 887A LDRB R0,[R1, #+10]
\ 00000092 B279 LDRB R2,[R6, #+6]
\ 00000094 9043 BICS R0,R0,R2
\ 00000096 8872 STRB R0,[R1, #+10]
448 }
449 }
450 #endif
451
452 #if (OS_FLAG_EN > 0) && (OS_MAX_FLAGS > 0)
453 pnode = ptcb->OSTCBFlagNode;
\ ??OSTaskDel_8:
\ 00000098 686A LDR R0,[R5, #+36]
454 if (pnode != (OS_FLAG_NODE *)0) { /* If task is waiting on event flag */
\ 0000009A 0028 CMP R0,#+0
\ 0000009C 01D0 BEQ.N ??OSTaskDel_9
455 OS_FlagUnlink(pnode); /* Remove from wait list */
\ 0000009E ........ _BLF OS_FlagUnlink,??OS_FlagUnlink??rT
456 }
457 #endif
458
459 ptcb->OSTCBDly = 0; /* Prevent OSTimeTick() from updating */
\ ??OSTaskDel_9:
\ 000000A2 0020 MOVS R0,#+0
\ 000000A4 8146 MOV R9,R0
\ 000000A6 6885 STRH R0,[R5, #+42]
460 ptcb->OSTCBStat = OS_STAT_RDY; /* Prevent task from being resumed */
\ 000000A8 3070 STRB R0,[R6, #+0]
461 ptcb->OSTCBStatPend = OS_STAT_PEND_OK;
\ 000000AA 7070 STRB R0,[R6, #+1]
462 if (OSLockNesting < 255u) { /* Make sure we don't context switch */
\ 000000AC 1F4F LDR.N R7,??OSTaskDel_10 ;; OSLockNesting
\ 000000AE 3878 LDRB R0,[R7, #+0]
\ 000000B0 FF28 CMP R0,#+255
\ 000000B2 01D0 BEQ.N ??OSTaskDel_11
463 OSLockNesting++;
\ 000000B4 401C ADDS R0,R0,#+1
\ 000000B6 3870 STRB R0,[R7, #+0]
464 }
465 OS_EXIT_CRITICAL(); /* Enabling INT. ignores next instruc. */
\ ??OSTaskDel_11:
\ 000000B8 2000 MOVS R0,R4
\ 000000BA ........ _BLF OS_CPU_SR_Restore,??OS_CPU_SR_Restore??rT
466 OS_Dummy(); /* ... Dummy ensures that INTs will be */
\ 000000BE ........ _BLF OS_Dummy,??OS_Dummy??rT
467 OS_ENTER_CRITICAL(); /* ... disabled HERE! */
\ 000000C2 ........ _BLF OS_CPU_SR_Save,??OS_CPU_SR_Save??rT
\ 000000C6 0400 MOVS R4,R0
468 if (OSLockNesting > 0) { /* Remove context switch lock */
\ 000000C8 3878 LDRB R0,[R7, #+0]
\ 000000CA 0028 CMP R0,#+0
\ 000000CC 01D0 BEQ.N ??OSTaskDel_12
469 OSLockNesting--;
\ 000000CE 401E SUBS R0,R0,#+1
\ 000000D0 3870 STRB R0,[R7, #+0]
470 }
471 OSTaskDelHook(ptcb); /* Call user defined hook */
\ ??OSTaskDel_12:
\ 000000D2 2800 MOVS R0,R5
\ 000000D4 ........ _BLF OSTaskDelHook,??OSTaskDelHook??rT
472 OSTaskCtr--; /* One less task being managed */
\ 000000D8 1548 LDR.N R0,??OSTaskDel_10+0x4 ;; OSTaskCtr
\ 000000DA 0178 LDRB R1,[R0, #+0]
\ 000000DC 491E SUBS R1,R1,#+1
\ 000000DE 0170 STRB R1,[R0, #+0]
473 OSTCBPrioTbl[prio] = (OS_TCB *)0; /* Clear old priority entry */
\ 000000E0 C8F80090 STR R9,[R8, #+0]
474 if (ptcb->OSTCBPrev == (OS_TCB *)0) { /* Remove from TCB chain */
\ 000000E4 A869 LDR R0,[R5, #+24]
\ 000000E6 0028 CMP R0,#+0
\ 000000E8 06D1 BNE.N ??OSTaskDel_13
475 ptcb->OSTCBNext->OSTCBPrev = (OS_TCB *)0;
\ 000000EA 6869 LDR R0,[R5, #+20]
\ 000000EC C0F81890 STR R9,[R0, #+24]
476 OSTCBList = ptcb->OSTCBNext;
\ 000000F0 1048 LDR.N R0,??OSTaskDel_10+0x8 ;; OSTCBList
\ 000000F2 6969 LDR R1,[R5, #+20]
\ 000000F4 0160 STR R1,[R0, #+0]
\ 000000F6 04E0 B.N ??OSTaskDel_14
477 } else {
478 ptcb->OSTCBPrev->OSTCBNext = ptcb->OSTCBNext;
\ ??OSTaskDel_13:
\ 000000F8 6969 LDR R1,[R5, #+20]
\ 000000FA 4161 STR R1,[R0, #+20]
479 ptcb->OSTCBNext->OSTCBPrev = ptcb->OSTCBPrev;
\ 000000FC 6869 LDR R0,[R5, #+20]
\ 000000FE A969 LDR R1,[R5, #+24]
\ 00000100 8161 STR R1,[R0, #+24]
480 }
481 ptcb->OSTCBNext = OSTCBFreeList; /* Return TCB to free TCB list */
\ ??OSTaskDel_14:
\ 00000102 0D48 LDR.N R0,??OSTaskDel_10+0xC ;; OSTCBFreeList
\ 00000104 0168 LDR R1,[R0, #+0]
\ 00000106 6961 STR R1,[R5, #+20]
482 OSTCBFreeList = ptcb;
\ 00000108 0560 STR R5,[R0, #+0]
483 #if OS_TASK_NAME_SIZE > 1
484 ptcb->OSTCBTaskName[0] = '?'; /* Unknown name */
\ 0000010A 3F20 MOVS R0,#+63
\ 0000010C 3077 STRB R0,[R6, #+28]
485 ptcb->OSTCBTaskName[1] = OS_ASCII_NUL;
\ 0000010E 4846 MOV R0,R9
\ 00000110 7077 STRB R0,[R6, #+29]
486 #endif
487 OS_EXIT_CRITICAL();
\ 00000112 2000 MOVS R0,R4
\ 00000114 ........ _BLF OS_CPU_SR_Restore,??OS_CPU_SR_Restore??rT
488 if (OSRunning == OS_TRUE) {
\ 00000118 .... LDR.N R0,??DataTable17 ;; OSRunning
\ 0000011A 0078 LDRB R0,[R0, #+0]
\ 0000011C 0128 CMP R0,#+1
\ 0000011E 01D1 BNE.N ??OSTaskDel_15
489 OS_Sched(); /* Find new highest priority task */
\ 00000120 ........ _BLF OS_Sched,??OS_Sched??rT
490 }
491 return (OS_ERR_NONE);
\ ??OSTaskDel_15:
\ 00000124 4846 MOV R0,R9
\ ??OSTaskDel_1:
\ 00000126 BDE8F083 POP {R4-R9,PC} ;; return
\ 0000012A 00BF Nop
\ ??OSTaskDel_10:
\ 0000012C ........ DC32 OSLockNesting
\ 00000130 ........ DC32 OSTaskCtr
\ 00000134 ........ DC32 OSTCBList
\ 00000138 ........ DC32 OSTCBFreeList
492 }
493 #endif
494 /*$PAGE*/
495 /*
496 *********************************************************************************************************
497 * REQUEST THAT A TASK DELETE ITSELF
498 *
499 * Description: This function is used to:
500 * a) notify a task to delete itself.
501 * b) to see if a task requested that the current task delete itself.
502 * This function is a little tricky to understand. Basically, you have a task that needs
503 * to be deleted however, this task has resources that it has allocated (memory buffers,
504 * semaphores, mailboxes, queues etc.). The task cannot be deleted otherwise these
505 * resources would not be freed. The requesting task calls OSTaskDelReq() to indicate that
506 * the task needs to be deleted. Deleting of the task is however, deferred to the task to
507 * be deleted. For example, suppose that task #10 needs to be deleted. The requesting task
508 * example, task #5, would call OSTaskDelReq(10). When task #10 gets to execute, it calls
509 * this function by specifying OS_PRIO_SELF and monitors the returned value. If the return
510 * value is OS_ERR_TASK_DEL_REQ, another task requested a task delete. Task #10 would look like
511 * this:
512 *
513 * void Task(void *p_arg)
514 * {
515 * .
516 * .
517 * while (1) {
518 * OSTimeDly(1);
519 * if (OSTaskDelReq(OS_PRIO_SELF) == OS_ERR_TASK_DEL_REQ) {
520 * Release any owned resources;
521 * De-allocate any dynamic memory;
522 * OSTaskDel(OS_PRIO⌨️ 快捷键说明
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