📄 os_sem.txt
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; generated by ARM/Thumb C/C++ Compiler with , RVCT3.1 [Build 914] for uVision
; commandline ArmCC [--debug -c --asm --interleave -o.\rvmdk\os_sem.o --depend=.\rvmdk\os_sem.d --device=DARMSTM -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 -ID:\Keil\ARM\INC\ST\STM32F10x ..\..\..\..\..\uCOS-II\Source\os_sem.c]
THUMB
AREA ||.text||, CODE, READONLY, ALIGN=2
OSSemAccept PROC
;;;49 INT16U OSSemAccept (OS_EVENT *pevent)
;;;50 {
000000 b570 PUSH {r4-r6,lr}
000002 4604 MOV r4,r0
;;;51 INT16U cnt;
;;;52 #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
;;;53 OS_CPU_SR cpu_sr = 0;
;;;54 #endif
;;;55
;;;56
;;;57
;;;58 #if OS_ARG_CHK_EN > 0
;;;59 if (pevent == (OS_EVENT *)0) { /* Validate 'pevent' */
000004 b90c CBNZ r4,|L1.10|
;;;60 return (0);
000006 2000 MOVS r0,#0
;;;61 }
;;;62 #endif
;;;63 if (pevent->OSEventType != OS_EVENT_TYPE_SEM) { /* Validate event block type */
;;;64 return (0);
;;;65 }
;;;66 OS_ENTER_CRITICAL();
;;;67 cnt = pevent->OSEventCnt;
;;;68 if (cnt > 0) { /* See if resource is available */
;;;69 pevent->OSEventCnt--; /* Yes, decrement semaphore and notify caller */
;;;70 }
;;;71 OS_EXIT_CRITICAL();
;;;72 return (cnt); /* Return semaphore count */
;;;73 }
000008 bd70 POP {r4-r6,pc}
|L1.10|
00000a 7820 LDRB r0,[r4,#0]
00000c 2803 CMP r0,#3
00000e d001 BEQ |L1.20|
000010 2000 MOVS r0,#0
000012 bd70 POP {r4-r6,pc}
|L1.20|
000014 f7fff7ff BL OS_CPU_SR_Save
000018 8925 LDRH r5,[r4,#8]
00001a b10d CBZ r5,|L1.32|
00001c 1e69 SUBS r1,r5,#1
00001e 8121 STRH r1,[r4,#8]
|L1.32|
000020 f7fff7ff BL OS_CPU_SR_Restore
000024 4628 MOV r0,r5
000026 bd70 POP {r4-r6,pc}
;;;74 #endif
ENDP
OSSemCreate PROC
;;;94 OS_EVENT *OSSemCreate (INT16U cnt)
;;;95 {
000028 b570 PUSH {r4-r6,lr}
00002a 4605 MOV r5,r0
;;;96 OS_EVENT *pevent;
;;;97 #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
;;;98 OS_CPU_SR cpu_sr = 0;
;;;99 #endif
;;;100
;;;101
;;;102
;;;103 if (OSIntNesting > 0) { /* See if called from ISR ... */
00002c 48d6 LDR r0,|L1.904|
00002e 7800 LDRB r0,[r0,#0] ; OSIntNesting
000030 b108 CBZ r0,|L1.54|
;;;104 return ((OS_EVENT *)0); /* ... can't CREATE from an ISR */
000032 2000 MOVS r0,#0
;;;105 }
;;;106 OS_ENTER_CRITICAL();
;;;107 pevent = OSEventFreeList; /* Get next free event control block */
;;;108 if (OSEventFreeList != (OS_EVENT *)0) { /* See if pool of free ECB pool was empty */
;;;109 OSEventFreeList = (OS_EVENT *)OSEventFreeList->OSEventPtr;
;;;110 }
;;;111 OS_EXIT_CRITICAL();
;;;112 if (pevent != (OS_EVENT *)0) { /* Get an event control block */
;;;113 pevent->OSEventType = OS_EVENT_TYPE_SEM;
;;;114 pevent->OSEventCnt = cnt; /* Set semaphore value */
;;;115 pevent->OSEventPtr = (void *)0; /* Unlink from ECB free list */
;;;116 #if OS_EVENT_NAME_SIZE > 1
;;;117 pevent->OSEventName[0] = '?'; /* Unknown name */
;;;118 pevent->OSEventName[1] = OS_ASCII_NUL;
;;;119 #endif
;;;120 OS_EventWaitListInit(pevent); /* Initialize to 'nobody waiting' on sem. */
;;;121 }
;;;122 return (pevent);
;;;123 }
000034 bd70 POP {r4-r6,pc}
|L1.54|
000036 f7fff7ff BL OS_CPU_SR_Save
00003a 49d4 LDR r1,|L1.908|
00003c 680c LDR r4,[r1,#0] ; OSEventFreeList
00003e b10c CBZ r4,|L1.68|
000040 6862 LDR r2,[r4,#4]
000042 600a STR r2,[r1,#0] ; OSEventFreeList
|L1.68|
000044 f7fff7ff BL OS_CPU_SR_Restore
000048 b154 CBZ r4,|L1.96|
00004a 2003 MOVS r0,#3
00004c 7020 STRB r0,[r4,#0]
00004e 8125 STRH r5,[r4,#8]
000050 2000 MOVS r0,#0
000052 6060 STR r0,[r4,#4]
000054 213f MOVS r1,#0x3f
000056 73e1 STRB r1,[r4,#0xf]
000058 7420 STRB r0,[r4,#0x10]
00005a 4620 MOV r0,r4
00005c f7fff7ff BL OS_EventWaitListInit
|L1.96|
000060 4620 MOV r0,r4
000062 bd70 POP {r4-r6,pc}
;;;124
ENDP
OSSemDel PROC
;;;164 OS_EVENT *OSSemDel (OS_EVENT *pevent, INT8U opt, INT8U *perr)
;;;165 {
000064 e92de92d PUSH {r4-r12,lr}
000068 4604 MOV r4,r0
00006a 468b MOV r11,r1
00006c 4615 MOV r5,r2
;;;166 BOOLEAN tasks_waiting;
;;;167 OS_EVENT *pevent_return;
;;;168 #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
;;;169 OS_CPU_SR cpu_sr = 0;
;;;170 #endif
;;;171
;;;172
;;;173
;;;174 #if OS_ARG_CHK_EN > 0
;;;175 if (perr == (INT8U *)0) { /* Validate 'perr' */
00006e b915 CBNZ r5,|L1.118|
;;;176 return (pevent);
000070 4620 MOV r0,r4
000072 e8bde8bd POP {r4-r12,pc}
|L1.118|
;;;177 }
;;;178 if (pevent == (OS_EVENT *)0) { /* Validate 'pevent' */
000076 b924 CBNZ r4,|L1.130|
;;;179 *perr = OS_ERR_PEVENT_NULL;
000078 2004 MOVS r0,#4
00007a 7028 STRB r0,[r5,#0]
;;;180 return (pevent);
00007c 4620 MOV r0,r4
00007e e8bde8bd POP {r4-r12,pc}
|L1.130|
;;;181 }
;;;182 #endif
;;;183 if (pevent->OSEventType != OS_EVENT_TYPE_SEM) { /* Validate event block type */
000082 7820 LDRB r0,[r4,#0]
000084 2803 CMP r0,#3
000086 d004 BEQ |L1.146|
;;;184 *perr = OS_ERR_EVENT_TYPE;
000088 2001 MOVS r0,#1
00008a 7028 STRB r0,[r5,#0]
;;;185 return (pevent);
00008c 4620 MOV r0,r4
00008e e8bde8bd POP {r4-r12,pc}
|L1.146|
;;;186 }
;;;187 if (OSIntNesting > 0) { /* See if called from ISR ... */
000092 48bd LDR r0,|L1.904|
000094 7800 LDRB r0,[r0,#0] ; OSIntNesting
000096 b120 CBZ r0,|L1.162|
;;;188 *perr = OS_ERR_DEL_ISR; /* ... can't DELETE from an ISR */
000098 200f MOVS r0,#0xf
00009a 7028 STRB r0,[r5,#0]
;;;189 return (pevent);
00009c 4620 MOV r0,r4
00009e e8bde8bd POP {r4-r12,pc}
|L1.162|
;;;190 }
;;;191 OS_ENTER_CRITICAL();
0000a2 f7fff7ff BL OS_CPU_SR_Save
0000a6 4682 MOV r10,r0
;;;192 if (pevent->OSEventGrp != 0) { /* See if any tasks waiting on semaphore */
0000a8 7aa0 LDRB r0,[r4,#0xa]
0000aa b108 CBZ r0,|L1.176|
;;;193 tasks_waiting = OS_TRUE; /* Yes */
0000ac 2601 MOVS r6,#1
0000ae e000 B |L1.178|
|L1.176|
;;;194 } else {
;;;195 tasks_waiting = OS_FALSE; /* No */
0000b0 2600 MOVS r6,#0
|L1.178|
;;;196 }
;;;197 switch (opt) {
0000b2 273f MOVS r7,#0x3f
0000b4 f8dff8df LDR r8,|L1.908|
0000b8 f04ff04f MOV r9,#0
0000bc f1bbf1bb CMP r11,#0
0000c0 d004 BEQ |L1.204|
0000c2 f1bbf1bb CMP r11,#1
0000c6 d13f BNE |L1.328|
0000c8 b330 CBZ r0,|L1.280|
;;;198 case OS_DEL_NO_PEND: /* Delete semaphore only if no task waiting */
;;;199 if (tasks_waiting == OS_FALSE) {
;;;200 #if OS_EVENT_NAME_SIZE > 1
;;;201 pevent->OSEventName[0] = '?'; /* Unknown name */
;;;202 pevent->OSEventName[1] = OS_ASCII_NUL;
;;;203 #endif
;;;204 pevent->OSEventType = OS_EVENT_TYPE_UNUSED;
;;;205 pevent->OSEventPtr = OSEventFreeList; /* Return Event Control Block to free list */
;;;206 pevent->OSEventCnt = 0;
;;;207 OSEventFreeList = pevent; /* Get next free event control block */
;;;208 OS_EXIT_CRITICAL();
;;;209 *perr = OS_ERR_NONE;
;;;210 pevent_return = (OS_EVENT *)0; /* Semaphore has been deleted */
;;;211 } else {
;;;212 OS_EXIT_CRITICAL();
;;;213 *perr = OS_ERR_TASK_WAITING;
;;;214 pevent_return = pevent;
;;;215 }
;;;216 break;
;;;217
;;;218 case OS_DEL_ALWAYS: /* Always delete the semaphore */
;;;219 while (pevent->OSEventGrp != 0) { /* Ready ALL tasks waiting for semaphore */
0000ca e01c B |L1.262|
|L1.204|
0000cc b99e CBNZ r6,|L1.246|
0000ce 73e7 STRB r7,[r4,#0xf]
0000d0 f884f884 STRB r9,[r4,#0x10]
0000d4 f884f884 STRB r9,[r4,#0]
0000d8 f8d8f8d8 LDR r0,[r8,#0] ; OSEventFreeList
0000dc 6060 STR r0,[r4,#4]
0000de f8a4f8a4 STRH r9,[r4,#8]
0000e2 f8c8f8c8 STR r4,[r8,#0] ; OSEventFreeList
0000e6 4650 MOV r0,r10
0000e8 f7fff7ff BL OS_CPU_SR_Restore
0000ec f885f885 STRB r9,[r5,#0]
0000f0 2000 MOVS r0,#0
0000f2 e8bde8bd POP {r4-r12,pc}
|L1.246|
0000f6 4650 MOV r0,r10
0000f8 f7fff7ff BL OS_CPU_SR_Restore
0000fc 2049 MOVS r0,#0x49
0000fe 7028 STRB r0,[r5,#0]
000100 4620 MOV r0,r4
000102 e8bde8bd POP {r4-r12,pc}
|L1.262|
000106 2300 MOVS r3,#0
000108 2201 MOVS r2,#1
00010a 4619 MOV r1,r3
00010c 4620 MOV r0,r4
00010e f7fff7ff BL OS_EventTaskRdy
000112 7aa0 LDRB r0,[r4,#0xa]
000114 2800 CMP r0,#0
000116 d1f6 BNE |L1.262|
|L1.280|
;;;220 (void)OS_EventTaskRdy(pevent, (void *)0, OS_STAT_SEM, OS_STAT_PEND_OK);
;;;221 }
;;;222 #if OS_EVENT_NAME_SIZE > 1
;;;223 pevent->OSEventName[0] = '?'; /* Unknown name */
000118 73e7 STRB r7,[r4,#0xf]
;;;224 pevent->OSEventName[1] = OS_ASCII_NUL;
00011a f884f884 STRB r9,[r4,#0x10]
;;;225 #endif
;;;226 pevent->OSEventType = OS_EVENT_TYPE_UNUSED;
00011e f884f884 STRB r9,[r4,#0]
;;;227 pevent->OSEventPtr = OSEventFreeList; /* Return Event Control Block to free list */
000122 f8d8f8d8 LDR r0,[r8,#0] ; OSEventFreeList
000126 6060 STR r0,[r4,#4]
;;;228 pevent->OSEventCnt = 0;
000128 f8a4f8a4 STRH r9,[r4,#8]
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