📄 os_mbox.lst
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##############################################################################
# #
# IAR ARM ANSI C/C++ Compiler V4.42A/W32 KICKSTART 13/Mar/2009 16:01:00 #
# Copyright 1999-2005 IAR Systems. All rights reserved. #
# #
# Cpu mode = thumb #
# Endian = little #
# Stack alignment = 4 #
# Source file = E:\UC_OS\Micrium\Software\uCOS-II\Source\os_mbox.c #
# Command line = E:\UC_OS\Micrium\Software\uCOS-II\Source\os_mbox.c #
# -lCN E:\UC_OS\Micrium\Software\EvalBoards\ST\STM3210 #
# B-EVAL\IAR\OS-Probe\Flash\List\ -o #
# E:\UC_OS\Micrium\Software\EvalBoards\ST\STM3210B-EVA #
# L\IAR\OS-Probe\Flash\Obj\ -z6 --no_unroll #
# --no_inline --no_tbaa --no_scheduling --debug #
# --cpu_mode thumb --endian little --cpu cortex-M3 #
# --stack_align 4 -e --fpu None --dlib_config #
# "C:\Program Files\IAR Systems\Embedded Workbench #
# 4.0 Kickstart\arm\LIB\dl7mptnnl8n.h" -I #
# E:\UC_OS\Micrium\Software\EvalBoards\ST\STM3210B-EVA #
# L\IAR\OS-Probe\ -I E:\UC_OS\Micrium\Software\EvalBoa #
# rds\ST\STM3210B-EVAL\IAR\OS-Probe\..\..\..\..\..\uco #
# s-ii\ports\arm-cortex-m3\generic\iar\ -I #
# E:\UC_OS\Micrium\Software\EvalBoards\ST\STM3210B-EVA #
# L\IAR\OS-Probe\..\..\..\..\..\ucos-ii\source\ -I #
# E:\UC_OS\Micrium\Software\EvalBoards\ST\STM3210B-EVA #
# L\IAR\OS-Probe\..\..\..\..\..\uc-lib\ -I #
# E:\UC_OS\Micrium\Software\EvalBoards\ST\STM3210B-EVA #
# L\IAR\OS-Probe\..\..\..\..\..\uc-cpu\ -I #
# E:\UC_OS\Micrium\Software\EvalBoards\ST\STM3210B-EVA #
# L\IAR\OS-Probe\..\..\..\..\..\uc-cpu\ARM-Cortex-M3\I #
# AR\ -I E:\UC_OS\Micrium\Software\EvalBoards\ST\STM32 #
# 10B-EVAL\IAR\OS-Probe\..\..\..\..\..\cpu\st\stm32\in #
# c\ -I E:\UC_OS\Micrium\Software\EvalBoards\ST\STM321 #
# 0B-EVAL\IAR\OS-Probe\..\BSP\ -I #
# E:\UC_OS\Micrium\Software\EvalBoards\ST\STM3210B-EVA #
# L\IAR\OS-Probe\..\..\..\..\..\uC-Probe\Target\Commun #
# ication\Generic\RS-232\Source\ -I #
# E:\UC_OS\Micrium\Software\EvalBoards\ST\STM3210B-EVA #
# L\IAR\OS-Probe\..\..\..\..\..\uC-Probe\Target\Commun #
# ication\Generic\RS-232\Ports\ST\STM32\ -I #
# E:\UC_OS\Micrium\Software\EvalBoards\ST\STM3210B-EVA #
# L\IAR\OS-Probe\..\..\..\..\..\uC-Probe\Target\Commun #
# ication\Generic\Source\ -I #
# E:\UC_OS\Micrium\Software\EvalBoards\ST\STM3210B-EVA #
# L\IAR\OS-Probe\..\..\..\..\..\uC-Probe\Target\Plugin #
# s\uCOS-II\ -I "C:\Program Files\IAR #
# Systems\Embedded Workbench 4.0 Kickstart\arm\INC\" #
# List file = E:\UC_OS\Micrium\Software\EvalBoards\ST\STM3210B-EVA #
# L\IAR\OS-Probe\Flash\List\os_mbox.lst #
# Object file = E:\UC_OS\Micrium\Software\EvalBoards\ST\STM3210B-EVA #
# L\IAR\OS-Probe\Flash\Obj\os_mbox.r79 #
# #
# #
##############################################################################
E:\UC_OS\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 1992-2007, Jean J. Labrosse, Weston, FL
8 * All Rights Reserved
9 *
10 * File : OS_MBOX.C
11 * By : Jean J. Labrosse
12 * Version : V2.85
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 > 0
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 > 0
\ In segment CODE, align 4, keep-with-next
47 void *OSMboxAccept (OS_EVENT *pevent)
48 {
\ OSMboxAccept:
\ 00000000 30B5 PUSH {R4,R5,LR}
\ 00000002 0400 MOVS R4,R0
49 void *pmsg;
50 #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
51 OS_CPU_SR cpu_sr = 0;
52 #endif
53
54
55
56 #if OS_ARG_CHK_EN > 0
57 if (pevent == (OS_EVENT *)0) { /* Validate 'pevent' */
\ 00000004 01D1 BNE.N ??OSMboxAccept_0
58 return ((void *)0);
\ 00000006 0020 MOVS R0,#+0
\ 00000008 30BD POP {R4,R5,PC}
59 }
60 #endif
61 if (pevent->OSEventType != OS_EVENT_TYPE_MBOX) { /* Validate event block type */
\ ??OSMboxAccept_0:
\ 0000000A 2078 LDRB R0,[R4, #+0]
\ 0000000C 0128 CMP R0,#+1
\ 0000000E 01D0 BEQ.N ??OSMboxAccept_1
62 return ((void *)0);
\ 00000010 0020 MOVS R0,#+0
\ 00000012 30BD POP {R4,R5,PC}
63 }
64 OS_ENTER_CRITICAL();
\ ??OSMboxAccept_1:
\ 00000014 ........ _BLF OS_CPU_SR_Save,??OS_CPU_SR_Save??rT
65 pmsg = pevent->OSEventPtr;
\ 00000018 6568 LDR R5,[R4, #+4]
66 pevent->OSEventPtr = (void *)0; /* Clear the mailbox */
\ 0000001A 0021 MOVS R1,#+0
\ 0000001C 6160 STR R1,[R4, #+4]
67 OS_EXIT_CRITICAL();
\ 0000001E ........ _BLF OS_CPU_SR_Restore,??OS_CPU_SR_Restore??rT
68 return (pmsg); /* Return the message received (or NULL) */
\ 00000022 2800 MOVS R0,R5
\ 00000024 30BD POP {R4,R5,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 segment CODE, align 4, keep-with-next
88 OS_EVENT *OSMboxCreate (void *pmsg)
89 {
\ OSMboxCreate:
\ 00000000 30B5 PUSH {R4,R5,LR}
\ 00000002 0400 MOVS R4,R0
90 OS_EVENT *pevent;
91 #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
92 OS_CPU_SR cpu_sr = 0;
93 #endif
94
95
96
97 if (OSIntNesting > 0) { /* See if called from ISR ... */
\ 00000004 .... LDR.N R0,??DataTable4 ;; OSIntNesting
\ 00000006 0078 LDRB R0,[R0, #+0]
\ 00000008 0028 CMP R0,#+0
\ 0000000A 01D0 BEQ.N ??OSMboxCreate_0
98 return ((OS_EVENT *)0); /* ... can't CREATE from an ISR */
\ 0000000C 0020 MOVS R0,#+0
\ 0000000E 30BD POP {R4,R5,PC}
99 }
100 OS_ENTER_CRITICAL();
\ ??OSMboxCreate_0:
\ 00000010 ........ _BLF OS_CPU_SR_Save,??OS_CPU_SR_Save??rT
101 pevent = OSEventFreeList; /* Get next free event control block */
\ 00000014 .... LDR.N R1,??DataTable3 ;; OSEventFreeList
\ 00000016 0A68 LDR R2,[R1, #+0]
\ 00000018 1500 MOVS R5,R2
102 if (OSEventFreeList != (OS_EVENT *)0) { /* See if pool of free ECB pool was empty */
\ 0000001A 01D0 BEQ.N ??OSMboxCreate_1
103 OSEventFreeList = (OS_EVENT *)OSEventFreeList->OSEventPtr;
\ 0000001C 5268 LDR R2,[R2, #+4]
\ 0000001E 0A60 STR R2,[R1, #+0]
104 }
105 OS_EXIT_CRITICAL();
\ ??OSMboxCreate_1:
\ 00000020 ........ _BLF OS_CPU_SR_Restore,??OS_CPU_SR_Restore??rT
106 if (pevent != (OS_EVENT *)0) {
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