📄 os_mem.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_mem.c #
# Command line = E:\UC_OS\Micrium\Software\uCOS-II\Source\os_mem.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_mem.lst #
# Object file = E:\UC_OS\Micrium\Software\EvalBoards\ST\STM3210B-EVA #
# L\IAR\OS-Probe\Flash\Obj\os_mem.r79 #
# #
# #
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E:\UC_OS\Micrium\Software\uCOS-II\Source\os_mem.c
1 /*
2 *********************************************************************************************************
3 * uC/OS-II
4 * The Real-Time Kernel
5 * MEMORY MANAGEMENT
6 *
7 * (c) Copyright 1992-2007, Jean J. Labrosse, Weston, FL
8 * All Rights Reserved
9 *
10 * File : OS_MEM.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_MEM_EN > 0) && (OS_MAX_MEM_PART > 0)
29 /*
30 *********************************************************************************************************
31 * CREATE A MEMORY PARTITION
32 *
33 * Description : Create a fixed-sized memory partition that will be managed by uC/OS-II.
34 *
35 * Arguments : addr is the starting address of the memory partition
36 *
37 * nblks is the number of memory blocks to create from the partition.
38 *
39 * blksize is the size (in bytes) of each block in the memory partition.
40 *
41 * perr is a pointer to a variable containing an error message which will be set by
42 * this function to either:
43 *
44 * OS_ERR_NONE if the memory partition has been created correctly.
45 * OS_ERR_MEM_INVALID_ADDR if you are specifying an invalid address for the memory
46 * storage of the partition or, the block does not align
47 * on a pointer boundary
48 * OS_ERR_MEM_INVALID_PART no free partitions available
49 * OS_ERR_MEM_INVALID_BLKS user specified an invalid number of blocks (must be >= 2)
50 * OS_ERR_MEM_INVALID_SIZE user specified an invalid block size
51 * - must be greater than the size of a pointer
52 * - must be able to hold an integral number of pointers
53 * Returns : != (OS_MEM *)0 is the partition was created
54 * == (OS_MEM *)0 if the partition was not created because of invalid arguments or, no
55 * free partition is available.
56 *********************************************************************************************************
57 */
58
\ In segment CODE, align 4, keep-with-next
59 OS_MEM *OSMemCreate (void *addr, INT32U nblks, INT32U blksize, INT8U *perr)
60 {
\ OSMemCreate:
\ 00000000 2DE9F043 PUSH {R4-R9,LR}
\ 00000004 8846 MOV R8,R1
\ 00000006 9146 MOV R9,R2
\ 00000008 0400 MOVS R4,R0
\ 0000000A 1D00 MOVS R5,R3
61 OS_MEM *pmem;
62 INT8U *pblk;
63 void **plink;
64 INT32U i;
65 #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
66 OS_CPU_SR cpu_sr = 0;
67 #endif
68
69
70
71 #if OS_ARG_CHK_EN > 0
72 if (perr == (INT8U *)0) { /* Validate 'perr' */
\ 0000000C 01D1 BNE.N ??OSMemCreate_0
73 return ((OS_MEM *)0);
\ ??OSMemCreate_1:
\ 0000000E 0020 MOVS R0,#+0
\ 00000010 3BE0 B.N ??OSMemCreate_2
74 }
75 if (addr == (void *)0) { /* Must pass a valid address for the memory part.*/
\ ??OSMemCreate_0:
\ 00000012 002C CMP R4,#+0
\ 00000014 02D1 BNE.N ??OSMemCreate_3
76 *perr = OS_ERR_MEM_INVALID_ADDR;
\ ??OSMemCreate_4:
\ 00000016 6220 MOVS R0,#+98
\ 00000018 2870 STRB R0,[R5, #+0]
\ 0000001A F8E7 B.N ??OSMemCreate_1
77 return ((OS_MEM *)0);
78 }
79 if (((INT32U)addr & (sizeof(void *) - 1)) != 0){ /* Must be pointer size aligned */
\ ??OSMemCreate_3:
\ 0000001C 8007 LSLS R0,R0,#+30
\ 0000001E FAD1 BNE.N ??OSMemCreate_4
80 *perr = OS_ERR_MEM_INVALID_ADDR;
81 return ((OS_MEM *)0);
82 }
83 if (nblks < 2) { /* Must have at least 2 blocks per partition */
\ 00000020 4046 MOV R0,R8
\ 00000022 0228 CMP R0,#+2
\ 00000024 02D2 BCS.N ??OSMemCreate_5
84 *perr = OS_ERR_MEM_INVALID_BLKS;
\ 00000026 5B20 MOVS R0,#+91
\ 00000028 2870 STRB R0,[R5, #+0]
\ 0000002A F0E7 B.N ??OSMemCreate_1
85 return ((OS_MEM *)0);
86 }
87 if (blksize < sizeof(void *)) { /* Must contain space for at least a pointer */
\ ??OSMemCreate_5:
\ 0000002C 4846 MOV R0,R9
\ 0000002E 0428 CMP R0,#+4
\ 00000030 02D2 BCS.N ??OSMemCreate_6
88 *perr = OS_ERR_MEM_INVALID_SIZE;
\ 00000032 5C20 MOVS R0,#+92
\ 00000034 2870 STRB R0,[R5, #+0]
\ 00000036 EAE7 B.N ??OSMemCreate_1
89 return ((OS_MEM *)0);
90 }
91 #endif
92 OS_ENTER_CRITICAL();
\ ??OSMemCreate_6:
\ 00000038 ........ _BLF OS_CPU_SR_Save,??OS_CPU_SR_Save??rT
93 pmem = OSMemFreeList; /* Get next free memory partition */
\ 0000003C .... LDR.N R1,??DataTable3 ;; OSMemFreeList
\ 0000003E 0A68 LDR R2,[R1, #+0]
\ 00000040 1600 MOVS R6,R2
94 if (OSMemFreeList != (OS_MEM *)0) { /* See if pool of free partitions was empty */
\ 00000042 01D0 BEQ.N ??OSMemCreate_7
95 OSMemFreeList = (OS_MEM *)OSMemFreeList->OSMemFreeList;
\ 00000044 5268 LDR R2,[R2, #+4]
\ 00000046 0A60 STR R2,[R1, #+0]
96 }
97 OS_EXIT_CRITICAL();
\ ??OSMemCreate_7:
\ 00000048 ........ _BLF OS_CPU_SR_Restore,??OS_CPU_SR_Restore??rT
98 if (pmem == (OS_MEM *)0) { /* See if we have a memory partition */
\ 0000004C 002E CMP R6,#+0
\ 0000004E 02D1 BNE.N ??OSMemCreate_8
99 *perr = OS_ERR_MEM_INVALID_PART;
\ 00000050 5A20 MOVS R0,#+90
\ 00000052 2870 STRB R0,[R5, #+0]
\ 00000054 DBE7 B.N ??OSMemCreate_1
100 return ((OS_MEM *)0);
101 }
102 plink = (void **)addr; /* Create linked list of free memory blocks */
\ ??OSMemCreate_8:
\ 00000056 2000 MOVS R0,R4
103 pblk = (INT8U *)((INT32U)addr + blksize);
\ 00000058 19EB0401 ADDS R1,R9,R4
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