📄 os_q.lst
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\ 0000002A 2870 STRB R0,[R5, #+0]
219 return (pevent);
\ 0000002C 2000 MOVS R0,R4
\ 0000002E 5EE0 B ??OSQDel_1
220 }
221 OS_ENTER_CRITICAL();
\ ??OSQDel_3:
\ 00000030 ........ _BLF OS_CPU_SR_Save,??OS_CPU_SR_Save??rT
\ 00000034 0600 MOVS R6,R0
222 if (pevent->OSEventGrp != 0x00) { /* See if any tasks waiting on queue */
\ 00000036 6078 LDRB R0,[R4, #+1]
\ 00000038 0028 CMP R0,#+0
\ 0000003A 01D0 BEQ ??OSQDel_4
223 tasks_waiting = TRUE; /* Yes */
\ 0000003C 0127 MOVS R7,#+1
\ 0000003E 00E0 B ??OSQDel_5
224 } else {
225 tasks_waiting = FALSE; /* No */
\ ??OSQDel_4:
\ 00000040 0027 MOVS R7,#+0
226 }
227 switch (opt) {
\ ??OSQDel_5:
\ 00000042 6846 MOV R0,SP
\ 00000044 0078 LDRB R0,[R0, #+0]
\ 00000046 0028 CMP R0,#+0
\ 00000048 02D0 BEQ ??OSQDel_6
\ 0000004A 0128 CMP R0,#+1
\ 0000004C 28D0 BEQ ??OSQDel_7
\ 0000004E 48E0 B ??OSQDel_8
228 case OS_DEL_NO_PEND: /* Delete queue only if no task waiting */
229 if (tasks_waiting == FALSE) {
\ ??OSQDel_6:
\ 00000050 002F CMP R7,#+0
\ 00000052 19D1 BNE ??OSQDel_9
230 #if OS_EVENT_NAME_SIZE > 1
231 pevent->OSEventName[0] = '?'; /* Unknown name */
\ 00000054 3F20 MOVS R0,#+63
\ 00000056 2074 STRB R0,[R4, #+16]
232 pevent->OSEventName[1] = OS_ASCII_NUL;
\ 00000058 0020 MOVS R0,#+0
\ 0000005A 6074 STRB R0,[R4, #+17]
233 #endif
234 pq = (OS_Q *)pevent->OSEventPtr; /* Return OS_Q to free list */
\ 0000005C 6068 LDR R0,[R4, #+4]
235 pq->OSQPtr = OSQFreeList;
\ 0000005E .... LDR R1,??DataTable16 ;; OSQFreeList
\ 00000060 0968 LDR R1,[R1, #+0]
\ 00000062 0160 STR R1,[R0, #+0]
236 OSQFreeList = pq;
\ 00000064 .... LDR R1,??DataTable16 ;; OSQFreeList
\ 00000066 0860 STR R0,[R1, #+0]
237 pevent->OSEventType = OS_EVENT_TYPE_UNUSED;
\ 00000068 0020 MOVS R0,#+0
\ 0000006A 2070 STRB R0,[R4, #+0]
238 pevent->OSEventPtr = OSEventFreeList; /* Return Event Control Block to free list */
\ 0000006C .... LDR R0,??DataTable18 ;; OSEventFreeList
\ 0000006E 0068 LDR R0,[R0, #+0]
\ 00000070 6060 STR R0,[R4, #+4]
239 pevent->OSEventCnt = 0;
\ 00000072 0020 MOVS R0,#+0
\ 00000074 6080 STRH R0,[R4, #+2]
240 OSEventFreeList = pevent; /* Get next free event control block */
\ 00000076 .... LDR R0,??DataTable18 ;; OSEventFreeList
\ 00000078 0460 STR R4,[R0, #+0]
241 OS_EXIT_CRITICAL();
\ 0000007A 3000 MOVS R0,R6
\ 0000007C ........ _BLF OS_CPU_SR_Restore,??OS_CPU_SR_Restore??rT
242 *err = OS_NO_ERR;
\ 00000080 0020 MOVS R0,#+0
\ 00000082 2870 STRB R0,[R5, #+0]
243 return ((OS_EVENT *)0); /* Queue has been deleted */
\ 00000084 0020 MOVS R0,#+0
\ 00000086 32E0 B ??OSQDel_1
244 } else {
245 OS_EXIT_CRITICAL();
\ ??OSQDel_9:
\ 00000088 3000 MOVS R0,R6
\ 0000008A ........ _BLF OS_CPU_SR_Restore,??OS_CPU_SR_Restore??rT
246 *err = OS_ERR_TASK_WAITING;
\ 0000008E 0820 MOVS R0,#+8
\ 00000090 2870 STRB R0,[R5, #+0]
247 return (pevent);
\ 00000092 2000 MOVS R0,R4
\ 00000094 2BE0 B ??OSQDel_1
248 }
249
250 case OS_DEL_ALWAYS: /* Always delete the queue */
251 while (pevent->OSEventGrp != 0x00) { /* Ready ALL tasks waiting for queue */
252 OS_EventTaskRdy(pevent, (void *)0, OS_STAT_Q);
\ ??OSQDel_10:
\ 00000096 0422 MOVS R2,#+4
\ 00000098 0021 MOVS R1,#+0
\ 0000009A 2000 MOVS R0,R4
\ 0000009C ........ _BLF OS_EventTaskRdy,??OS_EventTaskRdy??rT
253 }
\ ??OSQDel_7:
\ 000000A0 6078 LDRB R0,[R4, #+1]
\ 000000A2 0028 CMP R0,#+0
\ 000000A4 F7D1 BNE ??OSQDel_10
254 #if OS_EVENT_NAME_SIZE > 1
255 pevent->OSEventName[0] = '?'; /* Unknown name */
\ 000000A6 3F20 MOVS R0,#+63
\ 000000A8 2074 STRB R0,[R4, #+16]
256 pevent->OSEventName[1] = OS_ASCII_NUL;
\ 000000AA 0020 MOVS R0,#+0
\ 000000AC 6074 STRB R0,[R4, #+17]
257 #endif
258 pq = (OS_Q *)pevent->OSEventPtr; /* Return OS_Q to free list */
\ 000000AE 6068 LDR R0,[R4, #+4]
259 pq->OSQPtr = OSQFreeList;
\ 000000B0 .... LDR R1,??DataTable16 ;; OSQFreeList
\ 000000B2 0968 LDR R1,[R1, #+0]
\ 000000B4 0160 STR R1,[R0, #+0]
260 OSQFreeList = pq;
\ 000000B6 .... LDR R1,??DataTable16 ;; OSQFreeList
\ 000000B8 0860 STR R0,[R1, #+0]
261 pevent->OSEventType = OS_EVENT_TYPE_UNUSED;
\ 000000BA 0020 MOVS R0,#+0
\ 000000BC 2070 STRB R0,[R4, #+0]
262 pevent->OSEventPtr = OSEventFreeList; /* Return Event Control Block to free list */
\ 000000BE .... LDR R0,??DataTable18 ;; OSEventFreeList
\ 000000C0 0068 LDR R0,[R0, #+0]
\ 000000C2 6060 STR R0,[R4, #+4]
263 pevent->OSEventCnt = 0;
\ 000000C4 0020 MOVS R0,#+0
\ 000000C6 6080 STRH R0,[R4, #+2]
264 OSEventFreeList = pevent; /* Get next free event control block */
\ 000000C8 .... LDR R0,??DataTable18 ;; OSEventFreeList
\ 000000CA 0460 STR R4,[R0, #+0]
265 OS_EXIT_CRITICAL();
\ 000000CC 3000 MOVS R0,R6
\ 000000CE ........ _BLF OS_CPU_SR_Restore,??OS_CPU_SR_Restore??rT
266 if (tasks_waiting == TRUE) { /* Reschedule only if task(s) were waiting */
\ 000000D2 012F CMP R7,#+1
\ 000000D4 01D1 BNE ??OSQDel_11
267 OS_Sched(); /* Find highest priority task ready to run */
\ 000000D6 ........ _BLF OS_Sched,??OS_Sched??rT
268 }
269 *err = OS_NO_ERR;
\ ??OSQDel_11:
\ 000000DA 0020 MOVS R0,#+0
\ 000000DC 2870 STRB R0,[R5, #+0]
270 return ((OS_EVENT *)0); /* Queue has been deleted */
\ 000000DE 0020 MOVS R0,#+0
\ 000000E0 05E0 B ??OSQDel_1
271
272 default:
273 OS_EXIT_CRITICAL();
\ ??OSQDel_8:
\ 000000E2 3000 MOVS R0,R6
\ 000000E4 ........ _BLF OS_CPU_SR_Restore,??OS_CPU_SR_Restore??rT
274 *err = OS_ERR_INVALID_OPT;
\ 000000E8 0720 MOVS R0,#+7
\ 000000EA 2870 STRB R0,[R5, #+0]
275 return (pevent);
\ 000000EC 2000 MOVS R0,R4
\ ??OSQDel_1:
\ 000000EE 01B0 ADD SP,SP,#+4
\ 000000F0 F0BC POP {R4-R7}
\ 000000F2 02BC POP {R1}
\ 000000F4 0847 BX R1 ;; return
276 }
277 }
278 #endif
279
280 /*$PAGE*/
281 /*
282 *********************************************************************************************************
283 * FLUSH QUEUE
284 *
285 * Description : This function is used to flush the contents of the message queue.
286 *
287 * Arguments : none
288 *
289 * Returns : OS_NO_ERR upon success
290 * OS_ERR_EVENT_TYPE If you didn't pass a pointer to a queue
291 * OS_ERR_PEVENT_NULL If 'pevent' is a NULL pointer
292 *
293 * WARNING : You should use this function with great care because, when to flush the queue, you LOOSE
294 * the references to what the queue entries are pointing to and thus, you could cause
295 * 'memory leaks'. In other words, the data you are pointing to that's being referenced
296 * by the queue entries should, most likely, need to be de-allocated (i.e. freed).
297 *********************************************************************************************************
298 */
299
300 #if OS_Q_FLUSH_EN > 0
\ In segment CODE, align 4, keep-with-next
301 INT8U OSQFlush (OS_EVENT *pevent)
302 {
\ OSQFlush:
\ 00000000 10B5 PUSH {R4,LR}
\ 00000002 0400 MOVS R4,R0
303 #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
304 OS_CPU_SR cpu_sr;
305 #endif
306 OS_Q *pq;
307
308
309 #if OS_ARG_CHK_EN > 0
310 if (pevent == (OS_EVENT *)0) { /* Validate 'pevent' */
\ 00000004 002C CMP R4,#+0
\ 00000006 01D1 BNE ??OSQFlush_0
311 return (OS_ERR_PEVENT_NULL);
\ 00000008 0420 MOVS R0,#+4
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