📄 os_task.lst
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###############################################################################
# #
# IAR ANSI C/C++ Compiler V6.10.2.52244/W32 for ARM 07/Aug/2011 12:10:30 #
# Copyright 1999-2010 IAR Systems AB. #
# #
# Cpu mode = thumb #
# Endian = little #
# Source file = F:\stm32\我的程序\Micrium\Software\uCOS-II\Source\os_tas #
# k.c #
# Command line = F:\stm32\我的程序\Micrium\Software\uCOS-II\Source\os_tas #
# k.c -D USE_STDPERIPH_DRIVER -D STM32F10X_CL -lCN #
# F:\stm32\我的程序\Micrium\Software\EWARM\OS-II\Flash\Lis #
# t\ -o F:\stm32\我的程序\Micrium\Software\EWARM\OS-II\Fla #
# sh\Obj\ --no_cse --no_unroll --no_inline #
# --no_code_motion --no_tbaa --no_clustering #
# --no_scheduling --debug --endian=little --cpu=Cortex-M3 #
# -e --fpu=None --dlib_config #
# D:\arm\INC\c\DLib_Config_Normal.h -I #
# F:\stm32\我的程序\Micrium\Software\EWARM\OS-II\APP\ -I #
# F:\stm32\我的程序\Micrium\Software\EWARM\OS-II\..\BSP\ #
# -I F:\stm32\我的程序\Micrium\Software\EWARM\OS-II\..\BSP #
# \ST\CMSIS\CM3\CoreSupport\ -I #
# F:\stm32\我的程序\Micrium\Software\EWARM\OS-II\..\BSP\ST #
# \CMSIS\CM3\DeviceSupport\ST\STM32F10x\ -I #
# F:\stm32\我的程序\Micrium\Software\EWARM\OS-II\..\BSP\ST #
# \STM32F10x_StdPeriph_Driver\inc\ -I #
# F:\stm32\我的程序\Micrium\Software\EWARM\OS-II\..\BSP\uC #
# OS-II\ -I F:\stm32\我的程序\Micrium\Software\EWARM\OS-II #
# \..\..\uCOS-II\Ports\ARM-Cortex-M3\Generic\IAR\ -I #
# F:\stm32\我的程序\Micrium\Software\EWARM\OS-II\..\..\uCO #
# S-II\Source\ -I F:\stm32\我的程序\Micrium\Software\EWARM #
# \OS-II\..\..\uC-LIB\ -I F:\stm32\我的程序\Micrium\Softwa #
# re\EWARM\OS-II\..\..\uC-LIB\Ports\ARM-Cortex-M3\IAR\ -I #
# F:\stm32\我的程序\Micrium\Software\EWARM\OS-II\..\..\uC- #
# CPU\ -I F:\stm32\我的程序\Micrium\Software\EWARM\OS-II\. #
# .\..\uC-CPU\ARM-Cortex-M3\IAR\ -On --use_c++_inline #
# List file = F:\stm32\我的程序\Micrium\Software\EWARM\OS-II\Flash\Lis #
# t\os_task.lst #
# Object file = F:\stm32\我的程序\Micrium\Software\EWARM\OS-II\Flash\Obj #
# \os_task.o #
# #
# #
###############################################################################
F:\stm32\我的程序\Micrium\Software\uCOS-II\Source\os_task.c
1 /*
2 *********************************************************************************************************
3 * uC/OS-II
4 * The Real-Time Kernel
5 * TASK MANAGEMENT
6 *
7 * (c) Copyright 1992-2010, Micrium, Weston, FL
8 * All Rights Reserved
9 *
10 * File : OS_TASK.C
11 * By : Jean J. Labrosse
12 * Version : V2.92
13 *
14 * LICENSING TERMS:
15 * ---------------
16 * uC/OS-II is provided in source form for FREE evaluation, for educational use or for peaceful research.
17 * If you plan on using uC/OS-II in a commercial product you need to contact Micri祄 to properly license
18 * its use in your product. We provide ALL the source code for your convenience and to help you experience
19 * uC/OS-II. The fact that the source is provided does NOT mean that you can use it without paying a
20 * licensing fee.
21 *********************************************************************************************************
22 */
23
24 #ifndef OS_MASTER_FILE
25 #include <ucos_ii.h>
26 #endif
27
28 /*$PAGE*/
29 /*
30 *********************************************************************************************************
31 * CHANGE PRIORITY OF A TASK
32 *
33 * Description: This function allows you to change the priority of a task dynamically. Note that the new
34 * priority MUST be available.
35 *
36 * Arguments : oldp is the old priority
37 *
38 * newp is the new priority
39 *
40 * Returns : OS_ERR_NONE is the call was successful
41 * OS_ERR_PRIO_INVALID if the priority you specify is higher that the maximum allowed
42 * (i.e. >= OS_LOWEST_PRIO)
43 * OS_ERR_PRIO_EXIST if the new priority already exist.
44 * OS_ERR_PRIO there is no task with the specified OLD priority (i.e. the OLD task does
45 * not exist.
46 * OS_ERR_TASK_NOT_EXIST if the task is assigned to a Mutex PIP.
47 *********************************************************************************************************
48 */
49
50 #if OS_TASK_CHANGE_PRIO_EN > 0u
\ In section .text, align 2, keep-with-next
51 INT8U OSTaskChangePrio (INT8U oldprio,
52 INT8U newprio)
53 {
\ OSTaskChangePrio:
\ 00000000 2DE9F14F PUSH {R0,R4-R11,LR}
\ 00000004 82B0 SUB SP,SP,#+8
\ 00000006 0C00 MOVS R4,R1
54 #if (OS_EVENT_EN)
55 OS_EVENT *pevent;
56 #if (OS_EVENT_MULTI_EN > 0u)
57 OS_EVENT **pevents;
58 #endif
59 #endif
60 OS_TCB *ptcb;
61 INT8U y_new;
62 INT8U x_new;
63 INT8U y_old;
64 OS_PRIO bity_new;
65 OS_PRIO bitx_new;
66 OS_PRIO bity_old;
67 OS_PRIO bitx_old;
68 #if OS_CRITICAL_METHOD == 3u
69 OS_CPU_SR cpu_sr = 0u; /* Storage for CPU status register */
\ 00000008 5FF0000B MOVS R11,#+0
70 #endif
71
72
73 /*$PAGE*/
74 #if OS_ARG_CHK_EN > 0u
75 if (oldprio >= OS_LOWEST_PRIO) {
76 if (oldprio != OS_PRIO_SELF) {
77 return (OS_ERR_PRIO_INVALID);
78 }
79 }
80 if (newprio >= OS_LOWEST_PRIO) {
81 return (OS_ERR_PRIO_INVALID);
82 }
83 #endif
84 OS_ENTER_CRITICAL();
\ 0000000C ........ BL OS_CPU_SR_Save
\ 00000010 8346 MOV R11,R0
85 if (OSTCBPrioTbl[newprio] != (OS_TCB *)0) { /* New priority must not already exist */
\ 00000012 E4B2 UXTB R4,R4 ;; ZeroExt R4,R4,#+24,#+24
\ 00000014 ........ LDR.W R0,??DataTable14
\ 00000018 50F82400 LDR R0,[R0, R4, LSL #+2]
\ 0000001C 0028 CMP R0,#+0
\ 0000001E 04D0 BEQ.N ??OSTaskChangePrio_0
86 OS_EXIT_CRITICAL();
\ 00000020 5846 MOV R0,R11
\ 00000022 ........ BL OS_CPU_SR_Restore
87 return (OS_ERR_PRIO_EXIST);
\ 00000026 2820 MOVS R0,#+40
\ 00000028 0BE1 B.N ??OSTaskChangePrio_1
88 }
89 if (oldprio == OS_PRIO_SELF) { /* See if changing self */
\ ??OSTaskChangePrio_0:
\ 0000002A 9DF80800 LDRB R0,[SP, #+8]
\ 0000002E FF28 CMP R0,#+255
\ 00000030 06D1 BNE.N ??OSTaskChangePrio_2
90 oldprio = OSTCBCur->OSTCBPrio; /* Yes, get priority */
\ 00000032 ........ LDR.W R0,??DataTable14_1
\ 00000036 0068 LDR R0,[R0, #+0]
\ 00000038 90F83600 LDRB R0,[R0, #+54]
\ 0000003C 8DF80800 STRB R0,[SP, #+8]
91 }
92 ptcb = OSTCBPrioTbl[oldprio];
\ ??OSTaskChangePrio_2:
\ 00000040 9DF80800 LDRB R0,[SP, #+8]
\ 00000044 ........ LDR.W R1,??DataTable14
\ 00000048 51F82000 LDR R0,[R1, R0, LSL #+2]
\ 0000004C 0700 MOVS R7,R0
93 if (ptcb == (OS_TCB *)0) { /* Does task to change exist? */
\ 0000004E 002F CMP R7,#+0
\ 00000050 04D1 BNE.N ??OSTaskChangePrio_3
94 OS_EXIT_CRITICAL(); /* No, can't change its priority! */
\ 00000052 5846 MOV R0,R11
\ 00000054 ........ BL OS_CPU_SR_Restore
95 return (OS_ERR_PRIO);
\ 00000058 2920 MOVS R0,#+41
\ 0000005A F2E0 B.N ??OSTaskChangePrio_1
96 }
97 if (ptcb == OS_TCB_RESERVED) { /* Is task assigned to Mutex */
\ ??OSTaskChangePrio_3:
\ 0000005C 012F CMP R7,#+1
\ 0000005E 04D1 BNE.N ??OSTaskChangePrio_4
98 OS_EXIT_CRITICAL(); /* No, can't change its priority! */
\ 00000060 5846 MOV R0,R11
\ 00000062 ........ BL OS_CPU_SR_Restore
99 return (OS_ERR_TASK_NOT_EXIST);
\ 00000066 4320 MOVS R0,#+67
\ 00000068 EBE0 B.N ??OSTaskChangePrio_1
100 }
101 #if OS_LOWEST_PRIO <= 63u
102 y_new = (INT8U)(newprio >> 3u); /* Yes, compute new TCB fields */
\ ??OSTaskChangePrio_4:
\ 0000006A E4B2 UXTB R4,R4 ;; ZeroExt R4,R4,#+24,#+24
\ 0000006C E008 LSRS R0,R4,#+3
\ 0000006E 8046 MOV R8,R0
103 x_new = (INT8U)(newprio & 0x07u);
\ 00000070 14F00700 ANDS R0,R4,#0x7
\ 00000074 8DF80300 STRB R0,[SP, #+3]
104 #else
105 y_new = (INT8U)((INT8U)(newprio >> 4u) & 0x0Fu);
106 x_new = (INT8U)(newprio & 0x0Fu);
107 #endif
108 bity_new = (OS_PRIO)(1uL << y_new);
\ 00000078 0120 MOVS R0,#+1
\ 0000007A 10FA08F0 LSLS R0,R0,R8
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