📄 disc.lst
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ARM COMPILER V2.42, disc 27/03/06 10:45:48 PAGE 1
ARM COMPILER V2.42, COMPILATION OF MODULE disc
OBJECT MODULE PLACED IN .\obj\disc.obj
COMPILER INVOKED BY: C:\Keil\ARM\BIN\CA.exe src\disc.c THUMB DEBUG PRINT(.\LST\DISC.LST) TABS(4) OBJECT(.\obj\disc.obj)
stmt level source
1 /*****************************************************************************\
2 * efs - General purpose Embedded Filesystem library *
3 * --------------------- ----------------------------------- *
4 * *
5 * Filename : disc.c *
6 * Description : This file contains the functions regarding the whole disc *
7 * such as loading the MBR and performing read/write tests. *
8 * *
9 * This library is free software; you can redistribute it and/or *
10 * modify it under the terms of the GNU Lesser General Public *
11 * License as published by the Free Software Foundation; either *
12 * version 2.1 of the License, or (at your option) any later version. *
13 * *
14 * This library is distributed in the hope that it will be useful, *
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
17 * Lesser General Public License for more details. *
18 * *
19 * (c)2004 Lennart Yseboodt *
20 * (c)2004 Michael De Nil *
21 \*****************************************************************************/
22
23 /*****************************************************************************/
24 #include "disc.h"
25 /*****************************************************************************/
26
27 /* ****************************************************************************
28 * void disc_initDisc(Disc *disc,hcInterface* source)
29 * Description: This initialises the disc by loading the MBR and setting the
30 * pointer to the hardware object.
31 */
32 void disc_initDisc(Disc *disc,IOManager* ioman)
33 {
34 1 disc->ioman=ioman;
35 1 disc_setError(disc,DISC_NOERROR);
36 1 disc_loadMBR(disc);
37 1 }
38 /*****************************************************************************/
39
40 /* ****************************************************************************
41 * void disc_loadMBR(Disc *disc)
42 * Description: This functions copies the partitiontable to the partitions field.
43 */
44 void disc_loadMBR(Disc *disc)
45 {
46 1 euint8 x;
47 1 euint8 *buf;
48 1
49 1 buf=ioman_getSector(disc->ioman,LBA_ADDR_MBR,IOM_MODE_READONLY|IOM_MODE_EXP_REQ);
50 1 for(x=0;x<4;x++){
51 2 ex_getPartitionField(buf,&(disc->partitions[x]),PARTITION_TABLE_OFFSET+(x*SIZE_PARTITION_FIELD));
52 2 }
53 1 ioman_releaseSector(disc->ioman,buf);
54 1 }
55 /*****************************************************************************/
56
57
ARM COMPILER V2.42, disc 27/03/06 10:45:48 PAGE 2
ASSEMBLY LISTING OF GENERATED OBJECT CODE
*** EXTERNALS:
EXTERN CODE16 (ioman_getSector?T)
EXTERN CODE16 (ioman_releaseSector?T)
EXTERN CODE16 (ex_getPartitionField?T)
*** PUBLICS:
PUBLIC disc_initDisc?T
PUBLIC disc_loadMBR?T
*** CODE SEGMENT '?PR?disc_initDisc?T?disc':
32: void disc_initDisc(Disc *disc,IOManager* ioman)
00000000 B500 PUSH {LR}
00000002 1C0B MOV R3,R1 ; ioman
00000004 ---- Variable 'ioman' assigned to Register 'R3' ----
00000004 1C02 MOV R2,R0 ; disc
00000006 ---- Variable 'disc' assigned to Register 'R2' ----
34: disc->ioman=ioman;
00000006 1C19 MOV R1,R3 ; ioman
00000008 1C10 MOV R0,R2 ; disc
0000000A 6001 STR R1,[R0,#0x0] ; disc
35: disc_setError(disc,DISC_NOERROR);
0000000C 2100 MOV R1,#0x0
0000000E 1C10 MOV R0,R2 ; disc
00000010 7101 STRB R1,[R0,#0x4]
36: disc_loadMBR(disc);
00000012 1C10 MOV R0,R2 ; disc
00000014 F7FF BL disc_loadMBR?T ; T=0x0001 (1)
00000016 FFF4 BL disc_loadMBR?T ; T=0x0001 (2)
37: }
00000018 BC08 POP {R3}
0000001A 4718 BX R3
0000001C ENDP ; 'disc_initDisc?T'
*** CODE SEGMENT '?PR?disc_loadMBR?T?disc':
44: void disc_loadMBR(Disc *disc)
00000000 B570 PUSH {R4-R6,LR}
00000002 1C05 MOV R5,R0 ; disc
00000004 ---- Variable 'disc' assigned to Register 'R5' ----
45: {
00000004 ; SCOPE-START
49: buf=ioman_getSector(disc->ioman,LBA_ADDR_MBR,IOM_MODE_READONLY|IOM_MODE_EXP_REQ);
00000004 1C28 MOV R0,R5 ; disc
00000006 6800 LDR R0,[R0,#0x0] ; disc
00000008 2100 MOV R1,#0x0
0000000A 2205 MOV R2,#0x5
0000000C F7FF BL ioman_getSector?T ; T=0x0001 (1)
0000000E FFF8 BL ioman_getSector?T ; T=0x0001 (2)
00000010 1C04 MOV R4,R0 ; buf
00000012 ---- Variable 'buf' assigned to Register 'R4' ----
50: for(x=0;x<4;x++){
00000012 2600 MOV R6,#0x0
00000014 ---- Variable 'x' assigned to Register 'R6' ----
00000014 E00E B L_3 ; T=0x00000034
00000016 L_4:
51: ex_getPartitionField(buf,&(disc->partitions[x]),PARTITION_TABLE_OFFSET+(x*SIZE_PARTITION_FIELD));
00000016 1C30 MOV R0,R6 ; x
00000018 0603 LSL R3,R0,#0x18 ; x
0000001A 0E1B LSR R3,R3,#0x18
0000001C 011B LSL R3,R3,#0x4
0000001E 4800 LDR R2,=0x1BE
00000020 189A ADD R2,R3,R2
00000022 1C29 MOV R1,R5 ; disc
00000024 18C9 ADD R1,R3 ; disc
00000026 3108 ADD R1,#0x8
ARM COMPILER V2.42, disc 27/03/06 10:45:48 PAGE 3
00000028 1C20 MOV R0,R4 ; buf
0000002A F7FF BL ex_getPartitionField?T ; T=0x0001 (1)
0000002C FFE9 BL ex_getPartitionField?T ; T=0x0001 (2)
52: }
0000002E 3601 ADD R6,#0x1
00000030 0636 LSL R6,R6,#0x18
00000032 0E36 LSR R6,R6,#0x18
00000034 L_3:
00000034 1C30 MOV R0,R6 ; x
00000036 0600 LSL R0,R0,#0x18 ; x
00000038 0E00 LSR R0,R0,#0x18
0000003A 2804 CMP R0,#0x4
0000003C DBEB BLT L_4 ; T=0x00000016
53: ioman_releaseSector(disc->ioman,buf);
0000003E 1C28 MOV R0,R5 ; disc
00000040 6800 LDR R0,[R0,#0x0] ; disc
00000042 1C21 MOV R1,R4 ; buf
00000044 F7FF BL ioman_releaseSector?T ; T=0x0001 (1)
00000046 FFDC BL ioman_releaseSector?T ; T=0x0001 (2)
00000048 ; SCOPE-END
54: }
00000048 BC70 POP {R4-R6}
0000004A BC08 POP {R3}
0000004C 4718 BX R3
0000004E ENDP ; 'disc_loadMBR?T'
Module Information Static
----------------------------------
code size = ------
data size = ------
const size = ------
End of Module Information.
ARM COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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