📄 os_mem.lst
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##############################################################################
# #
# IAR ARM ANSI C/C++ Compiler V4.42A/W32 EVALUATION 12/Dec/2008 17:14:25 #
# Copyright 1999-2005 IAR Systems. All rights reserved. #
# #
# Cpu mode = arm #
# Endian = little #
# Stack alignment = 4 #
# Source file = E:\IAR_2478\IAR_2478\26uCOS\Src\uCOS\UCOS-II\uCOS-II #
# \Source\os_mem.c #
# Command line = E:\IAR_2478\IAR_2478\26uCOS\Src\uCOS\UCOS-II\uCOS-II #
# \Source\os_mem.c -lCN E:\IAR_2478\IAR_2478\26uCOS\Sr #
# c\uCOS\RAM_Debug\List\ -o #
# E:\IAR_2478\IAR_2478\26uCOS\Src\uCOS\RAM_Debug\Obj\ #
# -z2 --no_cse --no_unroll --no_inline #
# --no_code_motion --no_tbaa --no_clustering #
# --no_scheduling --debug --cpu_mode arm --endian #
# little --cpu ARM7TDMI-S --stack_align 4 -e --fpu #
# None --dlib_config "C:\Program Files\IAR #
# Systems\Embedded Workbench 4.0 #
# Evaluation\arm\LIB\dl4tpannl8n.h" -I #
# E:\IAR_2478\IAR_2478\26uCOS\Src\uCOS\include\ -I #
# E:\IAR_2478\IAR_2478\26uCOS\Src\uCOS\ucos-ii\include #
# \ -I "C:\Program Files\IAR Systems\Embedded #
# Workbench 4.0 Evaluation\arm\INC\" #
# List file = E:\IAR_2478\IAR_2478\26uCOS\Src\uCOS\RAM_Debug\List\ #
# os_mem.lst #
# Object file = E:\IAR_2478\IAR_2478\26uCOS\Src\uCOS\RAM_Debug\Obj\o #
# s_mem.r79 #
# #
# #
##############################################################################
E:\IAR_2478\IAR_2478\26uCOS\Src\uCOS\UCOS-II\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 : V2.84
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 * err 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 *err)
60 {
\ OSMemCreate:
\ 00000000 F04F2DE9 PUSH {R4-R11,LR}
\ 00000004 04D04DE2 SUB SP,SP,#+4
\ 00000008 0040B0E1 MOVS R4,R0
\ 0000000C 0150B0E1 MOVS R5,R1
\ 00000010 0260B0E1 MOVS R6,R2
\ 00000014 0370B0E1 MOVS R7,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;
\ 00000018 0010A0E3 MOV R1,#+0
\ 0000001C 00108DE5 STR R1,[SP, #+0]
67 #endif
68
69
70
71 #if OS_ARG_CHK_EN > 0
72 if (err == (INT8U *)0) { /* Validate 'err' */
\ 00000020 000057E3 CMP R7,#+0
\ 00000024 0100001A BNE ??OSMemCreate_0
73 return ((OS_MEM *)0);
\ 00000028 0000A0E3 MOV R0,#+0
\ 0000002C 4B0000EA B ??OSMemCreate_1
74 }
75 if (addr == (void *)0) { /* Must pass a valid address for the memory part.*/
\ ??OSMemCreate_0:
\ 00000030 000054E3 CMP R4,#+0
\ 00000034 0300001A BNE ??OSMemCreate_2
76 *err = OS_ERR_MEM_INVALID_ADDR;
\ 00000038 6200A0E3 MOV R0,#+98
\ 0000003C 0000C7E5 STRB R0,[R7, #+0]
77 return ((OS_MEM *)0);
\ 00000040 0000A0E3 MOV R0,#+0
\ 00000044 450000EA B ??OSMemCreate_1
78 }
79 if (((INT32U)addr & (sizeof(void *) - 1)) != 0){ /* Must be pointer size aligned */
\ ??OSMemCreate_2:
\ 00000048 030014E3 TST R4,#0x3
\ 0000004C 0300000A BEQ ??OSMemCreate_3
80 *err = OS_ERR_MEM_INVALID_ADDR;
\ 00000050 6200A0E3 MOV R0,#+98
\ 00000054 0000C7E5 STRB R0,[R7, #+0]
81 return ((OS_MEM *)0);
\ 00000058 0000A0E3 MOV R0,#+0
\ 0000005C 3F0000EA B ??OSMemCreate_1
82 }
83 if (nblks < 2) { /* Must have at least 2 blocks per partition */
\ ??OSMemCreate_3:
\ 00000060 020055E3 CMP R5,#+2
\ 00000064 0300002A BCS ??OSMemCreate_4
84 *err = OS_ERR_MEM_INVALID_BLKS;
\ 00000068 5B00A0E3 MOV R0,#+91
\ 0000006C 0000C7E5 STRB R0,[R7, #+0]
85 return ((OS_MEM *)0);
\ 00000070 0000A0E3 MOV R0,#+0
\ 00000074 390000EA B ??OSMemCreate_1
86 }
87 if (blksize < sizeof(void *)) { /* Must contain space for at least a pointer */
\ ??OSMemCreate_4:
\ 00000078 040056E3 CMP R6,#+4
\ 0000007C 0300002A BCS ??OSMemCreate_5
88 *err = OS_ERR_MEM_INVALID_SIZE;
\ 00000080 5C00A0E3 MOV R0,#+92
\ 00000084 0000C7E5 STRB R0,[R7, #+0]
89 return ((OS_MEM *)0);
\ 00000088 0000A0E3 MOV R0,#+0
\ 0000008C 330000EA B ??OSMemCreate_1
90 }
91 if ((blksize % sizeof(void *)) != 0) { /* Must contain space for an integral number ... */
\ ??OSMemCreate_5:
\ 00000090 030016E2 ANDS R0,R6,#0x3 ;; Zero extend
\ 00000094 000050E3 CMP R0,#+0
\ 00000098 0300000A BEQ ??OSMemCreate_6
92 *err = OS_ERR_MEM_INVALID_SIZE; /* ... of pointer sized items */
\ 0000009C 5C00A0E3 MOV R0,#+92
\ 000000A0 0000C7E5 STRB R0,[R7, #+0]
93 return ((OS_MEM *)0);
\ 000000A4 0000A0E3 MOV R0,#+0
\ 000000A8 2C0000EA B ??OSMemCreate_1
94 }
95 #endif
96 OS_ENTER_CRITICAL();
\ ??OSMemCreate_6:
\ 000000AC ........ _BLF OS_CPU_SR_Save,??OS_CPU_SR_Save??rA
\ 000000B0 00008DE5 STR R0,[SP, #+0]
97 pmem = OSMemFreeList; /* Get next free memory partition */
\ 000000B4 ........ LDR R0,??DataTable4 ;; OSMemFreeList
\ 000000B8 000090E5 LDR R0,[R0, #+0]
\ 000000BC 0080B0E1 MOVS R8,R0
98 if (OSMemFreeList != (OS_MEM *)0) { /* See if pool of free partitions was empty */
\ 000000C0 ........ LDR R0,??DataTable4 ;; OSMemFreeList
\ 000000C4 000090E5 LDR R0,[R0, #+0]
\ 000000C8 000050E3 CMP R0,#+0
\ 000000CC 0400000A BEQ ??OSMemCreate_7
99 OSMemFreeList = (OS_MEM *)OSMemFreeList->OSMemFreeList;
\ 000000D0 ........ LDR R0,??DataTable4 ;; OSMemFreeList
\ 000000D4 ........ LDR R1,??DataTable4 ;; OSMemFreeList
\ 000000D8 001091E5 LDR R1,[R1, #+0]
\ 000000DC 041091E5 LDR R1,[R1, #+4]
\ 000000E0 001080E5 STR R1,[R0, #+0]
100 }
101 OS_EXIT_CRITICAL();
\ ??OSMemCreate_7:
\ 000000E4 00009DE5 LDR R0,[SP, #+0]
\ 000000E8 ........ _BLF OS_CPU_SR_Restore,??OS_CPU_SR_Restore??rA
102 if (pmem == (OS_MEM *)0) { /* See if we have a memory partition */
\ 000000EC 000058E3 CMP R8,#+0
\ 000000F0 0300001A BNE ??OSMemCreate_8
103 *err = OS_ERR_MEM_INVALID_PART;
\ 000000F4 5A00A0E3 MOV R0,#+90
\ 000000F8 0000C7E5 STRB R0,[R7, #+0]
104 return ((OS_MEM *)0);
\ 000000FC 0000A0E3 MOV R0,#+0
\ 00000100 160000EA B ??OSMemCreate_1
105 }
106 plink = (void **)addr; /* Create linked list of free memory blocks */
\ ??OSMemCreate_8:
\ 00000104 04A0B0E1 MOVS R10,R4
107 pblk = (INT8U *)((INT32U)addr + blksize);
\ 00000108 040096E0 ADDS R0,R6,R4
\ 0000010C 0090B0E1 MOVS R9,R0
108 for (i = 0; i < (nblks - 1); i++) {
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