📄 os_flag.lst
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\ 00000034 00E0 B.N ??OSFlagAccept_7
120 } else {
121 consume = OS_FALSE;
\ ??OSFlagAccept_6:
\ 00000036 4F46 MOV R7,R9
122 }
123 /*$PAGE*/
124 *perr = OS_ERR_NONE; /* Assume NO error until proven otherwise. */
\ ??OSFlagAccept_7:
\ 00000038 4846 MOV R0,R9
\ 0000003A 3070 STRB R0,[R6, #+0]
125 OS_ENTER_CRITICAL();
\ 0000003C ........ _BLF OS_CPU_SR_Save,??OS_CPU_SR_Save??rT
126 switch (wait_type) {
\ 00000040 032D CMP R5,#+3
\ 00000042 38D8 BHI.N ??OSFlagAccept_8
\ 00000044 DFE805F0 TBB [PC, R5]
\ ??OSFlagAccept_0:
\ 00000048 1F2D0215 DC8 +31,+45,+2,+21
127 case OS_FLAG_WAIT_SET_ALL: /* See if all required flags are set */
128 flags_rdy = (OS_FLAGS)(pgrp->OSFlagFlags & flags); /* Extract only the bits we want */
\ ??OSFlagAccept_9:
\ 0000004C 2189 LDRH R1,[R4, #+8]
\ 0000004E 18EA0105 ANDS R5,R8,R1
129 if (flags_rdy == flags) { /* Must match ALL the bits that we want */
\ 00000052 2900 MOVS R1,R5
\ 00000054 4246 MOV R2,R8
\ 00000056 9142 CMP R1,R2
\ 00000058 06D1 BNE.N ??OSFlagAccept_10
130 if (consume == OS_TRUE) { /* See if we need to consume the flags */
\ 0000005A 012F CMP R7,#+1
\ 0000005C 06D1 BNE.N ??OSFlagAccept_11
131 pgrp->OSFlagFlags &= ~flags_rdy; /* Clear ONLY the flags that we wanted */
\ 0000005E 2189 LDRH R1,[R4, #+8]
\ 00000060 2A00 MOVS R2,R5
\ 00000062 9143 BICS R1,R1,R2
\ 00000064 2181 STRH R1,[R4, #+8]
\ 00000066 01E0 B.N ??OSFlagAccept_11
132 }
133 } else {
134 *perr = OS_ERR_FLAG_NOT_RDY;
\ ??OSFlagAccept_10:
\ 00000068 7021 MOVS R1,#+112
\ 0000006A 3170 STRB R1,[R6, #+0]
135 }
136 OS_EXIT_CRITICAL();
\ ??OSFlagAccept_11:
\ 0000006C ........ _BLF OS_CPU_SR_Restore,??OS_CPU_SR_Restore??rT
\ 00000070 26E0 B.N ??OSFlagAccept_12
137 break;
138
139 case OS_FLAG_WAIT_SET_ANY:
140 flags_rdy = (OS_FLAGS)(pgrp->OSFlagFlags & flags); /* Extract only the bits we want */
\ ??OSFlagAccept_13:
\ 00000072 2189 LDRH R1,[R4, #+8]
\ 00000074 18EA0105 ANDS R5,R8,R1
141 if (flags_rdy != (OS_FLAGS)0) { /* See if any flag set */
\ 00000078 F6D0 BEQ.N ??OSFlagAccept_10
142 if (consume == OS_TRUE) { /* See if we need to consume the flags */
\ 0000007A 012F CMP R7,#+1
\ 0000007C F6D1 BNE.N ??OSFlagAccept_11
143 pgrp->OSFlagFlags &= ~flags_rdy; /* Clear ONLY the flags that we got */
\ 0000007E 2A00 MOVS R2,R5
\ 00000080 9143 BICS R1,R1,R2
\ 00000082 2181 STRH R1,[R4, #+8]
\ 00000084 F2E7 B.N ??OSFlagAccept_11
144 }
145 } else {
146 *perr = OS_ERR_FLAG_NOT_RDY;
147 }
148 OS_EXIT_CRITICAL();
149 break;
150
151 #if OS_FLAG_WAIT_CLR_EN > 0
152 case OS_FLAG_WAIT_CLR_ALL: /* See if all required flags are cleared */
153 flags_rdy = (OS_FLAGS)(~pgrp->OSFlagFlags & flags); /* Extract only the bits we want */
\ ??OSFlagAccept_14:
\ 00000086 2189 LDRH R1,[R4, #+8]
\ 00000088 4546 MOV R5,R8
\ 0000008A 8D43 BICS R5,R5,R1
154 if (flags_rdy == flags) { /* Must match ALL the bits that we want */
\ 0000008C 2900 MOVS R1,R5
\ 0000008E 4246 MOV R2,R8
\ 00000090 9142 CMP R1,R2
\ 00000092 E9D1 BNE.N ??OSFlagAccept_10
155 if (consume == OS_TRUE) { /* See if we need to consume the flags */
\ 00000094 012F CMP R7,#+1
\ 00000096 E9D1 BNE.N ??OSFlagAccept_11
156 pgrp->OSFlagFlags |= flags_rdy; /* Set ONLY the flags that we wanted */
\ 00000098 2189 LDRH R1,[R4, #+8]
\ 0000009A 2A00 MOVS R2,R5
\ 0000009C 0A43 ORRS R2,R2,R1
\ 0000009E 2281 STRH R2,[R4, #+8]
\ 000000A0 E4E7 B.N ??OSFlagAccept_11
157 }
158 } else {
159 *perr = OS_ERR_FLAG_NOT_RDY;
160 }
161 OS_EXIT_CRITICAL();
162 break;
163
164 case OS_FLAG_WAIT_CLR_ANY:
165 flags_rdy = (OS_FLAGS)(~pgrp->OSFlagFlags & flags); /* Extract only the bits we want */
\ ??OSFlagAccept_15:
\ 000000A2 2189 LDRH R1,[R4, #+8]
\ 000000A4 4546 MOV R5,R8
\ 000000A6 8D43 BICS R5,R5,R1
166 if (flags_rdy != (OS_FLAGS)0) { /* See if any flag cleared */
\ 000000A8 DED0 BEQ.N ??OSFlagAccept_10
167 if (consume == OS_TRUE) { /* See if we need to consume the flags */
\ 000000AA 012F CMP R7,#+1
\ 000000AC DED1 BNE.N ??OSFlagAccept_11
168 pgrp->OSFlagFlags |= flags_rdy; /* Set ONLY the flags that we got */
\ 000000AE 2A00 MOVS R2,R5
\ 000000B0 0A43 ORRS R2,R2,R1
\ 000000B2 2281 STRH R2,[R4, #+8]
\ 000000B4 DAE7 B.N ??OSFlagAccept_11
169 }
170 } else {
171 *perr = OS_ERR_FLAG_NOT_RDY;
172 }
173 OS_EXIT_CRITICAL();
174 break;
175 #endif
176
177 default:
178 OS_EXIT_CRITICAL();
\ ??OSFlagAccept_8:
\ 000000B6 ........ _BLF OS_CPU_SR_Restore,??OS_CPU_SR_Restore??rT
179 flags_rdy = (OS_FLAGS)0;
\ 000000BA 4D46 MOV R5,R9
180 *perr = OS_ERR_FLAG_WAIT_TYPE;
\ 000000BC 6F20 MOVS R0,#+111
\ 000000BE 3070 STRB R0,[R6, #+0]
181 break;
182 }
183 return (flags_rdy);
\ ??OSFlagAccept_12:
\ 000000C0 2800 MOVS R0,R5
\ ??OSFlagAccept_3:
\ 000000C2 BDE8F083 POP {R4-R9,PC} ;; return
184 }
185 #endif
186
187 /*$PAGE*/
188 /*
189 *********************************************************************************************************
190 * CREATE AN EVENT FLAG
191 *
192 * Description: This function is called to create an event flag group.
193 *
194 * Arguments : flags Contains the initial value to store in the event flag group.
195 *
196 * perr is a pointer to an error code which will be returned to your application:
197 * OS_ERR_NONE if the call was successful.
198 * OS_ERR_CREATE_ISR if you attempted to create an Event Flag from an
199 * ISR.
200 * OS_ERR_FLAG_GRP_DEPLETED if there are no more event flag groups
201 *
202 * Returns : A pointer to an event flag group or a NULL pointer if no more groups are available.
203 *
204 * Called from: Task ONLY
205 *********************************************************************************************************
206 */
207
\ In segment CODE, align 4, keep-with-next
208 OS_FLAG_GRP *OSFlagCreate (OS_FLAGS flags, INT8U *perr)
209 {
\ OSFlagCreate:
\ 00000000 70B5 PUSH {R4-R6,LR}
\ 00000002 0600 MOVS R6,R0
\ 00000004 0C00 MOVS R4,R1
210 OS_FLAG_GRP *pgrp;
211 #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
212 OS_CPU_SR cpu_sr = 0;
213 #endif
214
215
216
217 #if OS_ARG_CHK_EN > 0
218 if (perr == (INT8U *)0) { /* Validate 'perr' */
\ 00000006 01D1 BNE.N ??OSFlagCreate_0
219 return ((OS_FLAG_GRP *)0);
\ ??OSFlagCreate_1:
\ 00000008 0020 MOVS R0,#+0
\ 0000000A 70BD POP {R4-R6,PC}
220 }
221 #endif
222 if (OSIntNesting > 0) { /* See if called from ISR ... */
\ ??OSFlagCreate_0:
\ 0000000C .... LDR.N R0,??DataTable5 ;; OSIntNesting
\ 0000000E 0078 LDRB R0,[R0, #+0]
\ 00000010 0028 CMP R0,#+0
\ 00000012 02D0 BEQ.N ??OSFlagCreate_2
223 *perr = OS_ERR_CREATE_ISR; /* ... can't CREATE from an ISR */
\ 00000014 1020 MOVS R0,#+16
\ 00000016 2070 STRB R0,[R4, #+0]
\ 00000018 F6E7 B.N ??OSFlagCreate_1
224 return ((OS_FLAG_GRP *)0);
225 }
226 OS_ENTER_CRITICAL();
\ ??OSFlagCreate_2:
\ 0000001A ........ _BLF OS_CPU_SR_Save,??OS_CPU_SR_Save??rT
227 pgrp = OSFlagFreeList; /* Get next free event flag */
\ 0000001E .... LDR.N R1,??DataTable3 ;; OSFlagFreeList
\ 00000020 0A68 LDR R2,[R1, #+0]
\ 00000022 1500 MOVS R5,R2
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