📄 os_mbox.lst
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###############################################################################
# #
# IAR ANSI C/C++ Compiler V6.10.2.52244/W32 for ARM 07/Aug/2011 12:10:29 #
# 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_mbo #
# x.c #
# Command line = F:\stm32\我的程序\Micrium\Software\uCOS-II\Source\os_mbo #
# x.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_mbox.lst #
# Object file = F:\stm32\我的程序\Micrium\Software\EWARM\OS-II\Flash\Obj #
# \os_mbox.o #
# #
# #
###############################################################################
F:\stm32\我的程序\Micrium\Software\uCOS-II\Source\os_mbox.c
1 /*
2 *********************************************************************************************************
3 * uC/OS-II
4 * The Real-Time Kernel
5 * MESSAGE MAILBOX MANAGEMENT
6 *
7 * (c) Copyright 1992-2010, Micrium, Weston, FL
8 * All Rights Reserved
9 *
10 * File : OS_MBOX.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 #if OS_MBOX_EN > 0u
29 /*
30 *********************************************************************************************************
31 * ACCEPT MESSAGE FROM MAILBOX
32 *
33 * Description: This function checks the mailbox to see if a message is available. Unlike OSMboxPend(),
34 * OSMboxAccept() does not suspend the calling task if a message is not available.
35 *
36 * Arguments : pevent is a pointer to the event control block
37 *
38 * Returns : != (void *)0 is the message in the mailbox if one is available. The mailbox is cleared
39 * so the next time OSMboxAccept() is called, the mailbox will be empty.
40 * == (void *)0 if the mailbox is empty or,
41 * if 'pevent' is a NULL pointer or,
42 * if you didn't pass the proper event pointer.
43 *********************************************************************************************************
44 */
45
46 #if OS_MBOX_ACCEPT_EN > 0u
\ In section .text, align 2, keep-with-next
47 void *OSMboxAccept (OS_EVENT *pevent)
48 {
\ OSMboxAccept:
\ 00000000 70B5 PUSH {R4-R6,LR}
\ 00000002 0400 MOVS R4,R0
49 void *pmsg;
50 #if OS_CRITICAL_METHOD == 3u /* Allocate storage for CPU status register */
51 OS_CPU_SR cpu_sr = 0u;
\ 00000004 0026 MOVS R6,#+0
52 #endif
53
54
55
56 #if OS_ARG_CHK_EN > 0u
57 if (pevent == (OS_EVENT *)0) { /* Validate 'pevent' */
58 return ((void *)0);
59 }
60 #endif
61 if (pevent->OSEventType != OS_EVENT_TYPE_MBOX) { /* Validate event block type */
\ 00000006 2078 LDRB R0,[R4, #+0]
\ 00000008 0128 CMP R0,#+1
\ 0000000A 01D0 BEQ.N ??OSMboxAccept_0
62 return ((void *)0);
\ 0000000C 0020 MOVS R0,#+0
\ 0000000E 0AE0 B.N ??OSMboxAccept_1
63 }
64 OS_ENTER_CRITICAL();
\ ??OSMboxAccept_0:
\ 00000010 ........ BL OS_CPU_SR_Save
\ 00000014 0600 MOVS R6,R0
65 pmsg = pevent->OSEventPtr;
\ 00000016 6068 LDR R0,[R4, #+4]
\ 00000018 0500 MOVS R5,R0
66 pevent->OSEventPtr = (void *)0; /* Clear the mailbox */
\ 0000001A 0020 MOVS R0,#+0
\ 0000001C 6060 STR R0,[R4, #+4]
67 OS_EXIT_CRITICAL();
\ 0000001E 3000 MOVS R0,R6
\ 00000020 ........ BL OS_CPU_SR_Restore
68 return (pmsg); /* Return the message received (or NULL) */
\ 00000024 2800 MOVS R0,R5
\ ??OSMboxAccept_1:
\ 00000026 70BD POP {R4-R6,PC} ;; return
69 }
70 #endif
71 /*$PAGE*/
72 /*
73 *********************************************************************************************************
74 * CREATE A MESSAGE MAILBOX
75 *
76 * Description: This function creates a message mailbox if free event control blocks are available.
77 *
78 * Arguments : pmsg is a pointer to a message that you wish to deposit in the mailbox. If
79 * you set this value to the NULL pointer (i.e. (void *)0) then the mailbox
80 * will be considered empty.
81 *
82 * Returns : != (OS_EVENT *)0 is a pointer to the event control clock (OS_EVENT) associated with the
83 * created mailbox
84 * == (OS_EVENT *)0 if no event control blocks were available
85 *********************************************************************************************************
86 */
87
\ In section .text, align 2, keep-with-next
88 OS_EVENT *OSMboxCreate (void *pmsg)
89 {
\ OSMboxCreate:
\ 00000000 70B5 PUSH {R4-R6,LR}
\ 00000002 0400 MOVS R4,R0
90 OS_EVENT *pevent;
91 #if OS_CRITICAL_METHOD == 3u /* Allocate storage for CPU status register */
92 OS_CPU_SR cpu_sr = 0u;
\ 00000004 0026 MOVS R6,#+0
93 #endif
94
95
96
97 #ifdef OS_SAFETY_CRITICAL_IEC61508
98 if (OSSafetyCriticalStartFlag == OS_TRUE) {
99 OS_SAFETY_CRITICAL_EXCEPTION();
100 return ((OS_EVENT *)0);
101 }
102 #endif
103
104 if (OSIntNesting > 0u) { /* See if called from ISR ... */
\ 00000006 .... LDR.N R0,??DataTable3_1
\ 00000008 0078 LDRB R0,[R0, #+0]
\ 0000000A 0028 CMP R0,#+0
\ 0000000C 01D0 BEQ.N ??OSMboxCreate_0
105 return ((OS_EVENT *)0); /* ... can't CREATE from an ISR */
\ 0000000E 0020 MOVS R0,#+0
\ 00000010 1EE0 B.N ??OSMboxCreate_1
106 }
107 OS_ENTER_CRITICAL();
\ ??OSMboxCreate_0:
\ 00000012 ........ BL OS_CPU_SR_Save
\ 00000016 0600 MOVS R6,R0
108 pevent = OSEventFreeList; /* Get next free event control block */
\ 00000018 .... LDR.N R0,??DataTable3_2
\ 0000001A 0068 LDR R0,[R0, #+0]
\ 0000001C 0500 MOVS R5,R0
109 if (OSEventFreeList != (OS_EVENT *)0) { /* See if pool of free ECB pool was empty */
\ 0000001E .... LDR.N R0,??DataTable3_2
\ 00000020 0068 LDR R0,[R0, #+0]
\ 00000022 0028 CMP R0,#+0
\ 00000024 04D0 BEQ.N ??OSMboxCreate_2
110 OSEventFreeList = (OS_EVENT *)OSEventFreeList->OSEventPtr;
\ 00000026 .... LDR.N R0,??DataTable3_2
\ 00000028 0068 LDR R0,[R0, #+0]
\ 0000002A 4068 LDR R0,[R0, #+4]
\ 0000002C .... LDR.N R1,??DataTable3_2
\ 0000002E 0860 STR R0,[R1, #+0]
111 }
112 OS_EXIT_CRITICAL();
\ ??OSMboxCreate_2:
\ 00000030 3000 MOVS R0,R6
\ 00000032 ........ BL OS_CPU_SR_Restore
113 if (pevent != (OS_EVENT *)0) {
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