os_task.txt
来自「针对STM32F103的UCOS移植」· 文本 代码 · 共 1,263 行 · 第 1/5 页
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1,263 行
; generated by ARM/Thumb C/C++ Compiler with , RVCT3.1 [Build 942] for uVision
; commandline ArmCC [--debug -c --asm --interleave -o.\rvmdk\os_task.o --depend=.\rvmdk\os_task.d --device=DARMSTM --apcs=interwork -O1 -Otime -I. -I..\BSP -I..\..\..\..\..\uCOS-II\Ports\arm-cortex-m3\Generic\RealView -I..\..\..\..\..\uCOS-II\Source -I..\..\..\..\..\CPU\ST\STM32\inc -I..\..\..\..\..\uC-CPU -I..\..\..\..\..\uC-CPU\Arm-Cortex-M3\RealView -I..\..\..\..\..\uC-LIB -I..\..\..\..\..\uC-Probe\Target\Plugins\uCOS-II -I..\..\..\..\..\uC-Probe\Target\Communication\Generic\Source -I..\..\..\..\..\uC-Probe\Target\Communication\Generic\RS-232\Ports\ST\STM32 -I..\..\..\..\..\uC-Probe\Target\Communication\Generic\RS-232\Source -IC:\Keil\ARM\INC\ST\STM32F10x ..\..\..\..\..\uCOS-II\Source\os_task.c]
THUMB
AREA ||.text||, CODE, READONLY, ALIGN=2
OSTaskChangePrio PROC
;;;51 INT8U OSTaskChangePrio (INT8U oldprio, INT8U newprio)
;;;52 {
000000 e92d47f0 PUSH {r4-r10,lr}
000004 4605 MOV r5,r0
000006 460c MOV r4,r1
;;;53 #if OS_EVENT_EN
;;;54 OS_EVENT *pevent;
;;;55 #endif
;;;56 OS_TCB *ptcb;
;;;57 INT8U x;
;;;58 INT8U y;
;;;59 #if OS_LOWEST_PRIO <= 63
;;;60 INT8U bitx;
;;;61 INT8U bity;
;;;62 #else
;;;63 INT16U bitx;
;;;64 INT16U bity;
;;;65 #endif
;;;66 INT8U y_old;
;;;67 #if OS_CRITICAL_METHOD == 3
;;;68 OS_CPU_SR cpu_sr = 0; /* Storage for CPU status register */
;;;69 #endif
;;;70
;;;71
;;;72
;;;73 #if OS_ARG_CHK_EN > 0
;;;74 if (oldprio >= OS_LOWEST_PRIO) {
000008 2d1f CMP r5,#0x1f
00000a d304 BCC |L1.22|
;;;75 if (oldprio != OS_PRIO_SELF) {
00000c 2dff CMP r5,#0xff
00000e d002 BEQ |L1.22|
;;;76 return (OS_ERR_PRIO_INVALID);
000010 202a MOVS r0,#0x2a
;;;77 }
;;;78 }
;;;79 if (newprio >= OS_LOWEST_PRIO) {
;;;80 return (OS_ERR_PRIO_INVALID);
;;;81 }
;;;82 #endif
;;;83 OS_ENTER_CRITICAL();
;;;84 if (OSTCBPrioTbl[newprio] != (OS_TCB *)0) { /* New priority must not already exist */
;;;85 OS_EXIT_CRITICAL();
;;;86 return (OS_ERR_PRIO_EXIST);
;;;87 }
;;;88 if (oldprio == OS_PRIO_SELF) { /* See if changing self */
;;;89 oldprio = OSTCBCur->OSTCBPrio; /* Yes, get priority */
;;;90 }
;;;91 ptcb = OSTCBPrioTbl[oldprio];
;;;92 if (ptcb == (OS_TCB *)0) { /* Does task to change exist? */
;;;93 OS_EXIT_CRITICAL(); /* No, can't change its priority! */
;;;94 return (OS_ERR_PRIO);
;;;95 }
;;;96 if (ptcb == OS_TCB_RESERVED) { /* Is task assigned to Mutex */
;;;97 OS_EXIT_CRITICAL(); /* No, can't change its priority! */
;;;98 return (OS_ERR_TASK_NOT_EXIST);
;;;99 }
;;;100 #if OS_LOWEST_PRIO <= 63
;;;101 y = (INT8U)(newprio >> 3); /* Yes, compute new TCB fields */
;;;102 x = (INT8U)(newprio & 0x07);
;;;103 bity = (INT8U)(1 << y);
;;;104 bitx = (INT8U)(1 << x);
;;;105 #else
;;;106 y = (INT8U)((newprio >> 4) & 0x0F);
;;;107 x = (INT8U)( newprio & 0x0F);
;;;108 bity = (INT16U)(1 << y);
;;;109 bitx = (INT16U)(1 << x);
;;;110 #endif
;;;111
;;;112 OSTCBPrioTbl[oldprio] = (OS_TCB *)0; /* Remove TCB from old priority */
;;;113 OSTCBPrioTbl[newprio] = ptcb; /* Place pointer to TCB @ new priority */
;;;114 y_old = ptcb->OSTCBY;
;;;115 if ((OSRdyTbl[y_old] & ptcb->OSTCBBitX) != 0) { /* If task is ready make it not */
;;;116 OSRdyTbl[y_old] &= ~ptcb->OSTCBBitX;
;;;117 if (OSRdyTbl[y_old] == 0) {
;;;118 OSRdyGrp &= ~ptcb->OSTCBBitY;
;;;119 }
;;;120 OSRdyGrp |= bity; /* Make new priority ready to run */
;;;121 OSRdyTbl[y] |= bitx;
;;;122 }
;;;123 #if OS_EVENT_EN
;;;124 pevent = ptcb->OSTCBEventPtr;
;;;125 if (pevent != (OS_EVENT *)0) { /* ... remove from event wait list */
;;;126 pevent->OSEventTbl[y_old] &= ~ptcb->OSTCBBitX;
;;;127 if (pevent->OSEventTbl[y_old] == 0) {
;;;128 pevent->OSEventGrp &= ~ptcb->OSTCBBitY;
;;;129 }
;;;130 pevent->OSEventGrp |= bity; /* Add new priority to wait list */
;;;131 pevent->OSEventTbl[y] |= bitx;
;;;132 }
;;;133 #endif
;;;134 ptcb->OSTCBPrio = newprio; /* Set new task priority */
;;;135 ptcb->OSTCBY = y;
;;;136 ptcb->OSTCBX = x;
;;;137 ptcb->OSTCBBitY = bity;
;;;138 ptcb->OSTCBBitX = bitx;
;;;139 OS_EXIT_CRITICAL();
;;;140 if (OSRunning == OS_TRUE) {
;;;141 OS_Sched(); /* Find new highest priority task */
;;;142 }
;;;143 return (OS_ERR_NONE);
;;;144 }
000012 e8bd87f0 POP {r4-r10,pc}
|L1.22|
000016 2c1f CMP r4,#0x1f ;79
000018 d302 BCC |L1.32|
00001a 202a MOVS r0,#0x2a ;80
00001c e8bd87f0 POP {r4-r10,pc}
|L1.32|
000020 f7fffffe BL OS_CPU_SR_Save
000024 4afc LDR r2,|L1.1048|
000026 f8521024 LDR r1,[r2,r4,LSL #2] ;84
00002a b121 CBZ r1,|L1.54|
00002c f7fffffe BL OS_CPU_SR_Restore
000030 2028 MOVS r0,#0x28 ;86
000032 e8bd87f0 POP {r4-r10,pc}
|L1.54|
000036 2dff CMP r5,#0xff ;88
000038 d103 BNE |L1.66|
00003a 49f8 LDR r1,|L1.1052|
00003c 6809 LDR r1,[r1,#0] ;89 ; OSTCBCur
00003e f891502e LDRB r5,[r1,#0x2e] ;89
|L1.66|
000042 f8521025 LDR r1,[r2,r5,LSL #2] ;91
000046 b921 CBNZ r1,|L1.82|
000048 f7fffffe BL OS_CPU_SR_Restore
00004c 2029 MOVS r0,#0x29 ;94
00004e e8bd87f0 POP {r4-r10,pc}
|L1.82|
000052 2901 CMP r1,#1 ;96
000054 d104 BNE |L1.96|
000056 f7fffffe BL OS_CPU_SR_Restore
00005a 2043 MOVS r0,#0x43 ;98
00005c e8bd87f0 POP {r4-r10,pc}
|L1.96|
000060 08e3 LSRS r3,r4,#3 ;101
000062 f0040707 AND r7,r4,#7 ;102
000066 f04f0c01 MOV r12,#1 ;103
00006a fa0cfe03 LSL lr,r12,r3 ;103
00006e f00e06ff AND r6,lr,#0xff ;103
000072 fa0cfc07 LSL r12,r12,r7 ;104
000076 f00c0eff AND lr,r12,#0xff ;104
00007a f04f0c00 MOV r12,#0 ;112
00007e f842c025 STR r12,[r2,r5,LSL #2] ;112
000082 f8421024 STR r1,[r2,r4,LSL #2] ;113
000086 f891c030 LDRB r12,[r1,#0x30] ;114
00008a f8df8394 LDR r8,|L1.1056|
00008e f8915031 LDRB r5,[r1,#0x31] ;115
000092 f818200c LDRB r2,[r8,r12] ;115
000096 422a TST r2,r5 ;115
000098 d016 BEQ |L1.200|
00009a 43aa BICS r2,r2,r5 ;116
00009c f808200c STRB r2,[r8,r12] ;116
0000a0 f818500c LDRB r5,[r8,r12] ;117
0000a4 4adf LDR r2,|L1.1060|
0000a6 b935 CBNZ r5,|L1.182|
0000a8 f8915032 LDRB r5,[r1,#0x32] ;118
0000ac f8929000 LDRB r9,[r2,#0] ;118 ; OSRdyGrp
0000b0 ea290505 BIC r5,r9,r5 ;118
0000b4 7015 STRB r5,[r2,#0] ;118 ; OSRdyGrp
|L1.182|
0000b6 7815 LDRB r5,[r2,#0] ;120 ; OSRdyGrp
0000b8 4335 ORRS r5,r5,r6 ;120
0000ba 7015 STRB r5,[r2,#0] ;120 ; OSRdyGrp
0000bc f8182003 LDRB r2,[r8,r3] ;121
0000c0 ea42020e ORR r2,r2,lr ;121
0000c4 f8082003 STRB r2,[r8,r3] ;121
|L1.200|
0000c8 69ca LDR r2,[r1,#0x1c] ;124
0000ca b312 CBZ r2,|L1.274|
0000cc 4494 ADD r12,r12,r2 ;126
0000ce f89c500b LDRB r5,[r12,#0xb] ;126
0000d2 f8918031 LDRB r8,[r1,#0x31] ;126
0000d6 ea250508 BIC r5,r5,r8 ;126
0000da f88c500b STRB r5,[r12,#0xb] ;126
0000de f89cc00b LDRB r12,[r12,#0xb] ;127
0000e2 f1bc0f00 CMP r12,#0 ;127
0000e6 d107 BNE |L1.248|
0000e8 f892c00a LDRB r12,[r2,#0xa] ;128
0000ec f8915032 LDRB r5,[r1,#0x32] ;128
0000f0 ea2c0c05 BIC r12,r12,r5 ;128
0000f4 f882c00a STRB r12,[r2,#0xa] ;128
|L1.248|
0000f8 f892c00a LDRB r12,[r2,#0xa] ;130
0000fc ea4c0c06 ORR r12,r12,r6 ;130
000100 f882c00a STRB r12,[r2,#0xa] ;130
000104 441a ADD r2,r2,r3 ;131
000106 f892c00b LDRB r12,[r2,#0xb] ;131
00010a ea4c0c0e ORR r12,r12,lr ;131
00010e f882c00b STRB r12,[r2,#0xb] ;131
|L1.274|
000112 f881402e STRB r4,[r1,#0x2e] ;134
000116 f8813030 STRB r3,[r1,#0x30] ;135
00011a f881702f STRB r7,[r1,#0x2f] ;136
00011e f8816032 STRB r6,[r1,#0x32] ;137
000122 f881e031 STRB lr,[r1,#0x31] ;138
000126 f7fffffe BL OS_CPU_SR_Restore
00012a 48bf LDR r0,|L1.1064|
00012c 7800 LDRB r0,[r0,#0] ;140 ; OSRunning
00012e 2801 CMP r0,#1 ;140
000130 d101 BNE |L1.310|
000132 f7fffffe BL OS_Sched
|L1.310|
000136 2000 MOVS r0,#0 ;143
000138 e8bd87f0 POP {r4-r10,pc}
;;;145 #endif
ENDP
OSTaskCreate PROC
;;;188 INT8U OSTaskCreate (void (*task)(void *p_arg), void *p_arg, OS_STK *ptos, INT8U prio)
;;;189 {
00013c e92d41f0 PUSH {r4-r8,lr}
000140 b084 SUB sp,sp,#0x10
000142 4605 MOV r5,r0
000144 460f MOV r7,r1
000146 4690 MOV r8,r2
000148 461c MOV r4,r3
;;;190 OS_STK *psp;
;;;191 INT8U err;
;;;192 #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
;;;193 OS_CPU_SR cpu_sr = 0;
;;;194 #endif
;;;195
;;;196
;;;197
;;;198 #if OS_ARG_CHK_EN > 0
;;;199 if (prio > OS_LOWEST_PRIO) { /* Make sure priority is within allowable range */
00014a 2c1f CMP r4,#0x1f
00014c d903 BLS |L1.342|
;;;200 return (OS_ERR_PRIO_INVALID);
00014e 202a MOVS r0,#0x2a
;;;201 }
;;;202 #endif
;;;203 OS_ENTER_CRITICAL();
;;;204 if (OSIntNesting > 0) { /* Make sure we don't create the task from within an ISR */
;;;205 OS_EXIT_CRITICAL();
;;;206 return (OS_ERR_TASK_CREATE_ISR);
;;;207 }
;;;208 if (OSTCBPrioTbl[prio] == (OS_TCB *)0) { /* Make sure task doesn't already exist at this priority */
;;;209 OSTCBPrioTbl[prio] = OS_TCB_RESERVED;/* Reserve the priority to prevent others from doing ... */
;;;210 /* ... the same thing until task is created. */
;;;211 OS_EXIT_CRITICAL();
;;;212 psp = OSTaskStkInit(task, p_arg, ptos, 0); /* Initialize the task's stack */
;;;213 err = OS_TCBInit(prio, psp, (OS_STK *)0, 0, 0, (void *)0, 0);
;;;214 if (err == OS_ERR_NONE) {
;;;215 if (OSRunning == OS_TRUE) { /* Find highest priority task if multitasking has started */
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