📄 bfsa_internal.lst
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\ 00000004 01D1 BNE ??isValidFileName_0
530 {
531 return FALSE;
\ ??isValidFileName_1:
\ 00000006 0020 MOV R0,#+0
\ 00000008 33E0 B ??isValidFileName_2
532 }
533 if (*fileName == '.') // File name can't be only an extension
\ ??isValidFileName_0:
\ 0000000A 2078 LDRB R0,[R4, #+0]
\ 0000000C 2E28 CMP R0,#+46
\ 0000000E FAD0 BEQ ??isValidFileName_1
534 {
535 return FALSE;
536 }
537 // Filename
538 for (_c=0;
\ 00000010 0025 MOV R5,#+0
\ ??isValidFileName_3:
\ 00000012 6019 ADD R0,R4,R5
\ 00000014 0178 LDRB R1,[R0, #+0]
\ 00000016 0029 CMP R1,#+0
\ 00000018 0BD0 BEQ ??isValidFileName_4
\ 0000001A 2E29 CMP R1,#+46
\ 0000001C 09D0 BEQ ??isValidFileName_4
539 _c<8 && fileName[_c]!='\0' && fileName[_c]!='.';
540 _c++)
541 {
542 if (!isValidFileNameChar(fileName[_c]))
\ 0000001E 081C MOV R0,R1
\ 00000020 ........ _BLF isValidFileNameChar,??isValidFileNameChar??rT
\ 00000024 0028 CMP R0,#+0
\ 00000026 EED0 BEQ ??isValidFileName_1
543 {
544 return FALSE;
545 }
546 }
\ 00000028 6D1C ADD R5,R5,#+1
\ 0000002A 2806 LSL R0,R5,#+24
\ 0000002C 000E LSR R0,R0,#+24
\ 0000002E 0828 CMP R0,#+8
\ 00000030 EFD3 BCC ??isValidFileName_3
547 if (fileName[_c]!='\0' && fileName[_c]!='.') // Wrong size
\ ??isValidFileName_4:
\ 00000032 2D06 LSL R5,R5,#+24
\ 00000034 2D0E LSR R5,R5,#+24
\ 00000036 6419 ADD R4,R4,R5
\ 00000038 2078 LDRB R0,[R4, #+0]
\ 0000003A 0028 CMP R0,#+0
\ 0000003C 01D0 BEQ ??isValidFileName_5
\ 0000003E 2E28 CMP R0,#+46
\ 00000040 E1D1 BNE ??isValidFileName_1
548 {
549 return FALSE;
550 }
551
552 // File extension
553 if (fileName[_c]=='.')
\ ??isValidFileName_5:
\ 00000042 2E28 CMP R0,#+46
\ 00000044 14D1 BNE ??isValidFileName_6
554 {
555 fileName = &fileName[_c+1];
\ 00000046 641C ADD R4,R4,#+1
556 for (_c=0;
\ 00000048 0025 MOV R5,#+0
\ ??isValidFileName_7:
\ 0000004A 6019 ADD R0,R4,R5
\ 0000004C 0178 LDRB R1,[R0, #+0]
\ 0000004E 0029 CMP R1,#+0
\ 00000050 09D0 BEQ ??isValidFileName_8
557 _c<3 && fileName[_c]!='\0';
558 _c++)
559 {
560 if (!isValidFileNameChar(fileName[_c]))
\ 00000052 081C MOV R0,R1
\ 00000054 ........ _BLF isValidFileNameChar,??isValidFileNameChar??rT
\ 00000058 0028 CMP R0,#+0
\ 0000005A D4D0 BEQ ??isValidFileName_1
561 {
562 return FALSE;
563 }
564 }
\ 0000005C 6D1C ADD R5,R5,#+1
\ 0000005E 2806 LSL R0,R5,#+24
\ 00000060 000E LSR R0,R0,#+24
\ 00000062 0328 CMP R0,#+3
\ 00000064 F1D3 BCC ??isValidFileName_7
565 if (fileName[_c]!='\0') // Wrong extension size
\ ??isValidFileName_8:
\ 00000066 2D06 LSL R5,R5,#+24
\ 00000068 2D0E LSR R5,R5,#+24
\ 0000006A 605D LDRB R0,[R4, R5]
\ 0000006C 0028 CMP R0,#+0
\ 0000006E CAD1 BNE ??isValidFileName_1
566 {
567 return FALSE;
568 }
569 }
570
571 return TRUE;
\ ??isValidFileName_6:
\ 00000070 0120 MOV R0,#+1
\ ??isValidFileName_2:
\ 00000072 30BC POP {R4,R5}
\ 00000074 02BC POP {R1}
\ 00000076 0847 BX R1 ;; return
572 }
573
574 /*****************************************************************
575 *
576 *
577 * S U B - R O U T I N E : padFileName
578 *
579 *-----------------------------------------------------------------
580 *
581 * void padFileName(const char *filename, char* strFileName)
582 *
583 * Object :
584 * This function add spaces to filename to have always a filename of 8+3 chars.
585 * Eg. filename = "test.exe", strFileName = "test exe"
586 *
587 * Argument:
588 * FileName :[IN] Valid Filename.
589 * strFileName :[OUT] filename padded, allocated by user to [8+3]
590 *
591 * Return value :
592 * returns First cluster of the file,
593 * or 0 if no matching file was found
594 *****************************************************************/
\ In segment CODE, align 4, keep-with-next
595 void padFileName(const char *filename, char* strFileName)
596 {
\ padFileName:
\ 00000000 30B5 PUSH {R4,R5,LR}
597 UCHAR i;
598 char *puc = strFileName;
\ 00000002 0A1C MOV R2,R1
599
600 if (!filename || !strFileName)
\ 00000004 0028 CMP R0,#+0
\ 00000006 1BD0 BEQ ??padFileName_0
\ 00000008 0029 CMP R1,#+0
\ 0000000A 19D0 BEQ ??padFileName_0
601 {
602 return;
603 }
604
605 for( i=0; i<8+3; i++ )
\ 0000000C 0023 MOV R3,#+0
\ 0000000E 0024 MOV R4,#+0
606 {
607 strFileName[i] = 0x20;
\ ??padFileName_1:
\ 00000010 2025 MOV R5,#+32
\ 00000012 0D55 STRB R5,[R1, R4]
608 }
\ 00000014 641C ADD R4,R4,#+1
\ 00000016 2506 LSL R5,R4,#+24
\ 00000018 2D0E LSR R5,R5,#+24
\ 0000001A 0B2D CMP R5,#+11
\ 0000001C F8D3 BCC ??padFileName_1
609 strFileName[8+3] = '\0';
\ 0000001E CB72 STRB R3,[R1, #+11]
610
611 for (i=0; i<BFSA_MAX_FILENAME_LEN && filename[i]!='\0'; i++)
\ ??padFileName_2:
\ 00000020 C418 ADD R4,R0,R3
\ 00000022 2578 LDRB R5,[R4, #+0]
\ 00000024 002D CMP R5,#+0
\ 00000026 0BD0 BEQ ??padFileName_0
612 {
613 if (filename[i]=='.')
\ 00000028 2E2D CMP R5,#+46
\ 0000002A 02D1 BNE ??padFileName_3
614 {
615 puc = strFileName + 8; // The '.' is not retrived
\ 0000002C 0A1C MOV R2,R1
\ 0000002E 0832 ADD R2,#+8
\ 00000030 01E0 B ??padFileName_4
616 }
617 else
618 {
619 *puc = filename[i];
\ ??padFileName_3:
\ 00000032 1570 STRB R5,[R2, #+0]
620 puc++;
\ 00000034 521C ADD R2,R2,#+1
621 }
622 }
\ ??padFileName_4:
\ 00000036 5B1C ADD R3,R3,#+1
\ 00000038 1C06 LSL R4,R3,#+24
\ 0000003A 240E LSR R4,R4,#+24
\ 0000003C 0D2C CMP R4,#+13
\ 0000003E EFD3 BCC ??padFileName_2
\ ??padFileName_0:
\ 00000040 30BC POP {R4,R5}
\ 00000042 01BC POP {R0}
\ 00000044 0047 BX R0 ;; return
623 }
624
625
626 /*****************************************************************
627 *
628 *
629 * S U B - R O U T I N E : findEntry
630 *
631 *-----------------------------------------------------------------
632 *
633 * USHORT findEntry(char* fileName)
634 *
635 * Object :
636 * This function looks for a file in current directory.
637 *
638 * Argument:
639 * FileName :[IN] Valid Filename to find.
640 *
641 * Return value :
642 * returns entry address,
643 * or 0 if no matching file was found
644 *****************************************************************/
\ In segment CODE, align 4, keep-with-next
645 int findEntry(char *fileName)
646 {
\ findEntry:
\ 00000000 F0B5 PUSH {R4-R7,LR}
\ 00000002 90B0 SUB SP,#+64
647 UCHAR *_flashDirEnt = NULL; // Point to a directory entry DIR_Name
648 UCHAR pDirEnt[DIRECTORY_ENTRIE_SIZE];
649 USHORT _currentDirClus = BFSA_current_dir.DirStart;
\ 00000004 .... LDR R1,??Subroutine16_0 ;; BFSA_current_dir + 102
\ 00000006 0091 STR R1,[SP, #+0]
\ 00000008 0C88 LDRH R4,[R1, #+0]
650 USHORT _currentEntry;
651 USHORT _numberDirEntryPerCluster;
652 char strFileName[8+3+1] =""; // File name space padded.
\ 0000000A 0AA9 ADD R1,SP,#+40
\ 0000000C 0022 MOV R2,#+0
\ 0000000E 0A60 STR R2,[R1, #0]
\ 00000010 4A60 ⌨️ 快捷键说明
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