📄 os_mem.lst
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##############################################################################
# #
# IAR ARM ANSI C/C++ Compiler V4.40A/W32 EVALUATION 21/Jul/2006 22:36:55 #
# Copyright 1999-2005 IAR Systems. All rights reserved. #
# Time limited license: 21 days left #
# #
# Cpu mode = interwork #
# Endian = little #
# Stack alignment = 4 #
# Source file = E:\Project\ucos-ii\pwm\uCOS-II\os_mem.c #
# Command line = E:\Project\ucos-ii\pwm\uCOS-II\os_mem.c -lCN #
# E:\Project\ucos-ii\pwm\Debug\List\ -lA #
# E:\Project\ucos-ii\pwm\Debug\List\ -o #
# E:\Project\ucos-ii\pwm\Debug\Obj\ -z3 --no_cse #
# --no_unroll --no_inline --no_code_motion --no_tbaa #
# --no_clustering --no_scheduling --debug --cpu_mode #
# thumb --endian little --cpu ARM7TDMI-S #
# --stack_align 4 --interwork -e --fpu None #
# --dlib_config "E:\Program Files\IAR #
# Systems\Embedded Workbench 4.0 #
# Evaluation\ARM\LIB\dl4tptinl8n.h" -I #
# E:\Project\ucos-ii\pwm\ -I #
# E:\Project\ucos-ii\pwm\App\ -I #
# E:\Project\ucos-ii\pwm\ARM\ -I #
# E:\Project\ucos-ii\pwm\BSP\ -I #
# E:\Project\ucos-ii\pwm\uCOS-II\ -I "E:\Program #
# Files\IAR Systems\Embedded Workbench 4.0 #
# Evaluation\ARM\INC\" #
# List file = E:\Project\ucos-ii\pwm\Debug\List\os_mem.lst #
# Object file = E:\Project\ucos-ii\pwm\Debug\Obj\os_mem.r79 #
# #
# #
##############################################################################
E:\Project\ucos-ii\pwm\uCOS-II\os_mem.c
1 /*
2 *********************************************************************************************************
3 * uC/OS-II
4 * The Real-Time Kernel
5 * MEMORY MANAGEMENT
6 *
7 * (c) Copyright 1992-2003, Jean J. Labrosse, Weston, FL
8 * All Rights Reserved
9 *
10 * File : OS_MEM.C
11 * By : Jean J. Labrosse
12 *********************************************************************************************************
13 */
14
15 #ifndef OS_MASTER_FILE
16 #include <ucos_ii.h>
17 #endif
18
19 #if (OS_MEM_EN > 0) && (OS_MAX_MEM_PART > 0)
20 /*
21 *********************************************************************************************************
22 * CREATE A MEMORY PARTITION
23 *
24 * Description : Create a fixed-sized memory partition that will be managed by uC/OS-II.
25 *
26 * Arguments : addr is the starting address of the memory partition
27 *
28 * nblks is the number of memory blocks to create from the partition.
29 *
30 * blksize is the size (in bytes) of each block in the memory partition.
31 *
32 * err is a pointer to a variable containing an error message which will be set by
33 * this function to either:
34 *
35 * OS_NO_ERR if the memory partition has been created correctly.
36 * OS_MEM_INVALID_ADDR you are specifying an invalid address for the memory
37 * storage of the partition.
38 * OS_MEM_INVALID_PART no free partitions available
39 * OS_MEM_INVALID_BLKS user specified an invalid number of blocks (must be >= 2)
40 * OS_MEM_INVALID_SIZE user specified an invalid block size
41 * (must be greater than the size of a pointer)
42 * Returns : != (OS_MEM *)0 is the partition was created
43 * == (OS_MEM *)0 if the partition was not created because of invalid arguments or, no
44 * free partition is available.
45 *********************************************************************************************************
46 */
47
\ In segment CODE, align 4, keep-with-next
48 OS_MEM *OSMemCreate (void *addr, INT32U nblks, INT32U blksize, INT8U *err)
49 {
\ OSMemCreate:
\ 00000000 F1B5 PUSH {R0,R4-R7,LR}
\ 00000002 0C00 MOVS R4,R1
\ 00000004 1500 MOVS R5,R2
\ 00000006 1E00 MOVS R6,R3
50 #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
51 OS_CPU_SR cpu_sr;
52 #endif
53 OS_MEM *pmem;
54 INT8U *pblk;
55 void **plink;
56 INT32U i;
57
58
59 #if OS_ARG_CHK_EN > 0
60 if (addr == (void *)0) { /* Must pass a valid address for the memory part. */
\ 00000008 0098 LDR R0,[SP, #+0]
\ 0000000A 0028 CMP R0,#+0
\ 0000000C 03D1 BNE ??OSMemCreate_0
61 *err = OS_MEM_INVALID_ADDR;
\ 0000000E 7620 MOVS R0,#+118
\ 00000010 3070 STRB R0,[R6, #+0]
62 return ((OS_MEM *)0);
\ 00000012 0020 MOVS R0,#+0
\ 00000014 38E0 B ??OSMemCreate_1
63 }
64 if (nblks < 2) { /* Must have at least 2 blocks per partition */
\ ??OSMemCreate_0:
\ 00000016 022C CMP R4,#+2
\ 00000018 03D2 BCS ??OSMemCreate_2
65 *err = OS_MEM_INVALID_BLKS;
\ 0000001A 6F20 MOVS R0,#+111
\ 0000001C 3070 STRB R0,[R6, #+0]
66 return ((OS_MEM *)0);
\ 0000001E 0020 MOVS R0,#+0
\ 00000020 32E0 B ??OSMemCreate_1
67 }
68 if (blksize < sizeof(void *)) { /* Must contain space for at least a pointer */
\ ??OSMemCreate_2:
\ 00000022 042D CMP R5,#+4
\ 00000024 03D2 BCS ??OSMemCreate_3
69 *err = OS_MEM_INVALID_SIZE;
\ 00000026 7020 MOVS R0,#+112
\ 00000028 3070 STRB R0,[R6, #+0]
70 return ((OS_MEM *)0);
\ 0000002A 0020 MOVS R0,#+0
\ 0000002C 2CE0 B ??OSMemCreate_1
71 }
72 #endif
73 OS_ENTER_CRITICAL();
\ ??OSMemCreate_3:
\ 0000002E ........ _BLF OS_CPU_SR_Save,??OS_CPU_SR_Save??rT
74 pmem = OSMemFreeList; /* Get next free memory partition */
\ 00000032 .... LDR R1,??DataTable4 ;; OSMemFreeList
\ 00000034 0F68 LDR R7,[R1, #+0]
75 if (OSMemFreeList != (OS_MEM *)0) { /* See if pool of free partitions was empty */
\ 00000036 .... LDR R1,??DataTable4 ;; OSMemFreeList
\ 00000038 0968 LDR R1,[R1, #+0]
\ 0000003A 0029 CMP R1,#+0
\ 0000003C 04D0 BEQ ??OSMemCreate_4
76 OSMemFreeList = (OS_MEM *)OSMemFreeList->OSMemFreeList;
\ 0000003E .... LDR R1,??DataTable4 ;; OSMemFreeList
\ 00000040 .... LDR R2,??DataTable4 ;; OSMemFreeList
\ 00000042 1268 LDR R2,[R2, #+0]
\ 00000044 5268 LDR R2,[R2, #+4]
\ 00000046 0A60 STR R2,[R1, #+0]
77 }
78 OS_EXIT_CRITICAL();
\ ??OSMemCreate_4:
\ 00000048 ........ _BLF OS_CPU_SR_Restore,??OS_CPU_SR_Restore??rT
79 if (pmem == (OS_MEM *)0) { /* See if we have a memory partition */
\ 0000004C 002F CMP R7,#+0
\ 0000004E 03D1 BNE ??OSMemCreate_5
80 *err = OS_MEM_INVALID_PART;
\ 00000050 6E20 MOVS R0,#+110
\ 00000052 3070 STRB R0,[R6, #+0]
81 return ((OS_MEM *)0);
\ 00000054 0020 MOVS R0,#+0
\ 00000056 17E0 B ??OSMemCreate_1
82 }
83 plink = (void **)addr; /* Create linked list of free memory blocks */
\ ??OSMemCreate_5:
\ 00000058 0098 LDR R0,[SP, #+0]
84 pblk = (INT8U *)((INT32U)addr + blksize);
\ 0000005A 0099 LDR R1,[SP, #+0]
\ 0000005C 4919 ADDS R1,R1,R5
85 for (i = 0; i < (nblks - 1); i++) {
\ 0000005E 0022 MOVS R2,#+0
\ 00000060 03E0 B ??OSMemCreate_6
86 *plink = (void *)pblk;
\ ??OSMemCreate_7:
\ 00000062 0160 STR R1,[R0, #+0]
87 plink = *plink;
\ 00000064 0068 LDR R0,[R0, #+0]
88 pblk = (INT8U *)((INT32U)pblk + blksize);
\ 00000066 4919 ADDS R1,R1,R5
89 }
\ 00000068 521C ADDS R2,R2,#+1
\ ??OSMemCreate_6:
\ 0000006A 631E SUBS R3,R4,#+1
\ 0000006C 9A42 CMP R2,R3
\ 0000006E F8D3 BCC ??OSMemCreate_7
90 *plink = (void *)0; /* Last memory block points to NULL */
\ 00000070 0021 MOVS R1,#+0
\ 00000072 0160 STR R1,[R0, #+0]
91 pmem->OSMemAddr = addr; /* Store start address of memory partition */
\ 00000074 0098 LDR R0,[SP, #+0]
\ 00000076 3860 STR R0,[R7, #+0]
92 pmem->OSMemFreeList = addr; /* Initialize pointer to pool of free blocks */
\ 00000078 0098 LDR R0,[SP, #+0]
\ 0000007A 7860 STR R0,[R7, #+4]
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