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Rev 77 Rev 78
Line 29... Line 29...
29 
   shr  bx,4    ;3 ok
 29 
   shr  bx,4    ;3 ok
30 
   shl  eax,4
 30 
   shl  eax,4
31 
   and  eax,0x0fffffff  ;2 ok
 31 
   and  eax,0x0fffffff  ;2 ok
32 
   shr  ax,4  ;1 ok
 32 
   shr  ax,4  ;1 ok
33 
   mov dword [edi],eax
 33 
   mov  dword [edi],eax
34 
   add  edi,4
 - 
 
35 
   mov dword [edi],ebx
 34 
   mov  dword [edi+4],ebx
36 
   add  edi,4
 - 
 
37 
   mov dword [edi],ecx
 35 
   mov  dword [edi+8],ecx
38 
   add  edi,4
 - 
 
39 
   mov dword [edi],edx
 36 
   mov  dword [edi+12],edx
40 
   add  edi,4
37 
   add  edi,16
41 
   add  esi,12
 38 
   add  esi,12
Line 42... Line 39...
42 
 
 39 
 
43 
   cmp  edi,0x280000+2856*2   ;2849 clusters
 40 
   cmp  edi,0x280000+2856*2   ;2849 clusters
Line 62... Line 59...
62 
   shl  bx,4
 59 
   shl  bx,4
63 
   shr  ebx,4
 60 
   shr  ebx,4
64 
   shrd eax,ebx,8
 61 
   shrd eax,ebx,8
65 
   shr  ebx,8
 62 
   shr  ebx,8
66 
   mov dword [edi],eax
 63 
   mov  dword [edi],eax
67 
   add  edi,4
 - 
 
68 
   mov word [edi],bx
 64 
   mov  word [edi+4],bx
69 
   add  edi,2
 65 
   add  edi,6
70 
   add  esi,8
 66 
   add  esi,8
Line 71... Line 67...
71 
 
 67 
 
72 
   cmp  edi,0x100000+512+4278     ;4274 bytes - all used FAT
 68 
   cmp  edi,0x100000+512+4278     ;4274 bytes - all used FAT
Line 98... Line 94...
98 
        cld
 94 
        cld
99 
    rdfs1:
 95 
    rdfs1:
100 
        repne scasw
 96 
        repne scasw
101 
        jnz  rdfs2    ;if last cluster not 0
 97 
        jnz  rdfs2    ;if last cluster not 0
102 
        inc  ebx
 98 
        inc  ebx
103 
        jcxz rdfs2    ;if last cluster=0
 99 
        test    ecx, ecx
104 
        jmp  rdfs1    ;if not last
 100 
        jnz     rdfs1
105 
    rdfs2:
 101 
    rdfs2:
106 
        shl  ebx,9    ;free clusters*512
 102 
        shl  ebx,9    ;free clusters*512
107 
        mov  edi,ebx
 103 
        mov  edi,ebx
Line 108... Line 104...
108
104
Line 436... Line 432...
436 
        mov    eax,[esp+12]
 432 
        mov    eax,[esp+12]
437 
        cmp    eax,512
 433 
        cmp    eax,512
438 
        jbe    flnsa
 434 
        jbe    flnsa
439 
        sub    eax,512
 435 
        sub    eax,512
440 
        mov    [esp+12],eax
 436 
        mov    [esp+12],eax
441 
        mov    eax,[esp+16]
 - 
 
442 
        add    eax,512
 - 
 
443 
        mov    [esp+16],eax
 437 
        add     dword [esp+16], 512
444 
        jmp    frnewds
 438 
        jmp    frnewds
Line 445... Line 439...
445 
 
 439 
 
446 
     flnsa:
 - 
 
447 
        dec    edi
 - 
 
448 
        dec    edi
 440 
     flnsa:
Line 449... Line 441...
449 
        mov    [edi],word 4095          ; mark end of file - last cluster
 441 
        mov    [edi-2],word 4095          ; mark end of file - last cluster
Line 450... Line 442...
450 
 
 442 
 
451 
      frnoreadds:
 443 
      frnoreadds:
Line 642... Line 634...
642 
	cmp	byte [edi+11], 0xF
 634 
	cmp	byte [edi+11], 0xF
643 
	jz	.longname
 635 
	jz	.longname
644 
	push	ecx
 636 
	push	ecx
645 
	mov	ecx, 8
 637 
	mov	ecx, 8
646 
        push	edi ebp ecx
 638 
        push	edi ebp ecx
647 
        cmp     byte [ebp-4], 0
 639 
        test    byte [ebp-4], 1
648 
        jnz     .unicode_short
 640 
        jnz     .unicode_short
649 
@@:
 641 
@@:
650 
	mov	al, [edi]
 642 
	mov	al, [edi]
651 
	inc	edi
 643 
	inc	edi
652 
	mov	[ebp], al
 644 
	mov	[ebp], al
Line 761... Line 753...
761 
; if this is not first entry, more processing required
 753 
; if this is not first entry, more processing required
762 
	stc
 754 
	stc
763 
	ret
 755 
	ret
764 
@@:
 756 
@@:
765 
; if this is first entry:
 757 
; if this is first entry:
766 
        cmp     byte [ebp-4], 0
 758 
        test    byte [ebp-4], 1
767 
        jnz     .ret
 759 
        jnz     .ret
768 
; buffer at ebp contains UNICODE name, convert it to ANSI
 760 
; buffer at ebp contains UNICODE name, convert it to ANSI
769 
	push	esi edi
 761 
	push	esi edi
770 
	mov	esi, ebp
 762 
	mov	esi, ebp
771 
	mov	edi, ebp
 763 
	mov	edi, ebp
Line 870... Line 862...
870 
        xor     eax, eax
 862 
        xor     eax, eax
871 
        mov     [esi+36], eax	; file size (high dword)
 863 
        mov     [esi+36], eax	; file size (high dword)
872 
        push    ecx edi
 864 
        push    ecx edi
873 
        lea     edi, [esi+40]
 865 
        lea     edi, [esi+40]
874 
        mov     esi, ebp
 866 
        mov     esi, ebp
- 
 
 867 
        test    byte [esi-4], 1
- 
 
 868 
        jz      .ansi
875 
        mov     ecx, 259/2
 869 
        mov     ecx, 260/2
876 
        rep     movsd
 870 
        rep     movsd
877 
        movsw
 871 
        mov     [edi-2], ax
878 
        stosw
 872 
@@:
879 
        mov     esi, edi
 873 
        mov     esi, edi
880 
        pop     edi ecx
 874 
        pop     edi ecx
881 
        ret
 875 
        ret
- 
 
 876 
.ansi:
- 
 
 877 
        mov     ecx, 264/4
- 
 
 878 
        rep     movsd
- 
 
 879 
        mov     [edi-1], al
- 
 
 880 
        jmp     @b
Line 882... Line 881...
882 
 
 881 
 
883 
rd_find_lfn:
 882 
rd_find_lfn:
884 
; in: esi->name
 883 
; in: esi->name
885 
; out: CF=1 - file not found
 884 
; out: CF=1 - file not found
Line 1011... Line 1010...
1011 
;----------------------------------------------------------------
 1010 
;----------------------------------------------------------------
1012 
;
 1011 
;
1013 
;  fs_RamdiskReadFolder - LFN variant for reading sys floppy folder
 1012 
;  fs_RamdiskReadFolder - LFN variant for reading sys floppy folder
1014 
;
 1013 
;
1015 
;  esi  points to filename; only root is folder on ramdisk
 1014 
;  esi  points to filename; only root is folder on ramdisk
1016 
;  ebx  pointer to 32-bit number = first wanted block
 1015 
;  ebx  pointer to structure 32-bit number = first wanted block
- 
 
 1016 
;                          & flags (bitfields)
- 
 
 1017 
; flags: bit 0: 0=ANSI names, 1=UNICODE names
1017 
;  ecx  number of blocks to read, 0+
 1018 
;  ecx  number of blocks to read, 0+
1018 
;  edx  mem location to return data
 1019 
;  edx  mem location to return data
1019 
;
 1020 
;
1020 
;  ret ebx = size or 0xffffffff file not found
 1021 
;  ret ebx = size or 0xffffffff file not found
1021 
;      eax = 0 ok read or other = errormsg
 1022 
;      eax = 0 ok read or other = errormsg
1022 
;
 1023 
;
1023 
;--------------------------------------------------------------
 1024 
;--------------------------------------------------------------
1024 
fs_RamdiskReadFolder:
 1025 
fs_RamdiskReadFolder:
1025 
        mov     ebx, [ebx]
 - 
 
1026 
        cmp     byte [esi], 0
 1026 
        cmp     byte [esi], 0
1027 
        jz      @f
 1027 
        jz      @f
1028 
; ramdisk doesn't support folders
 1028 
; ramdisk doesn't support folders
1029 
        mov     eax, ERROR_ACCESS_DENIED
 1029 
        mov     eax, ERROR_ACCESS_DENIED
1030 
        or      ebx, -1
 1030 
        or      ebx, -1
Line 1040... Line 1040...
1040 
        mov     byte [edx], 1   ; version
 1040 
        mov     byte [edx], 1   ; version
1041 
        pop     ecx
 1041 
        pop     ecx
1042 
        push    ebp
 1042 
        push    ebp
1043 
        sub     esp, 262*2      ; allocate space for LFN
 1043 
        sub     esp, 262*2      ; allocate space for LFN
1044 
        mov     ebp, esp
 1044 
        mov     ebp, esp
1045 
        push    1               ; for fat_get_name: read UNICODE name
 1045 
        push    dword [ebx+4]   ; for fat_get_name: read ANSI/UNICODE name
- 
 
 1046 
        mov     ebx, [ebx]
1046 
; read root
 1047 
; read root
1047 
        mov     esi, edi        ; esi points to block of data of folder entry (BDFE)
 1048 
        mov     esi, edi        ; esi points to block of data of folder entry (BDFE)
1048 
        mov     edi, 0x100000+512*19
 1049 
        mov     edi, 0x100000+512*19
1049 
.l1:
 1050 
.l1:
1050 
        call    fat_get_name
 1051 
        call    fat_get_name