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Rev 83 Rev 86
Line 832... Line 832...
832 
        and     ecx, 0xF
 832 
        and     ecx, 0xF
833 
        mov     ah, cl	; month
 833 
        mov     ah, cl	; month
834 
        pop     edx ecx
 834 
        pop     edx ecx
835 
        ret
 835 
        ret
Line -... Line 836...
- 
 
 836 
 
- 
 
 837 
bdfe_to_fat_time:
- 
 
 838 
        push    edx
- 
 
 839 
        mov     edx, eax
- 
 
 840 
        shr     eax, 16
- 
 
 841 
        and     dh, 0x3F
- 
 
 842 
        shl     eax, 6
- 
 
 843 
        or      al, dh
- 
 
 844 
        shr     dl, 1
- 
 
 845 
        and     dl, 0x1F
- 
 
 846 
        shl     eax, 5
- 
 
 847 
        or      al, dl
- 
 
 848 
        pop     edx
- 
 
 849 
        ret
- 
 
 850 
 
- 
 
 851 
bdfe_to_fat_date:
- 
 
 852 
        push    edx
- 
 
 853 
        mov     edx, eax
- 
 
 854 
        shr     eax, 16
- 
 
 855 
        sub     ax, 1980
- 
 
 856 
        and     dh, 0xF
- 
 
 857 
        shl     eax, 4
- 
 
 858 
        or      al, dh
- 
 
 859 
        and     dl, 0x1F
- 
 
 860 
        shl     eax, 5
- 
 
 861 
        or      al, dl
- 
 
 862 
        pop     edx
- 
 
 863 
        ret
836 
 
 864 
 
837 
fat_entry_to_bdfe:
 865 
fat_entry_to_bdfe:
838 
; convert FAT entry at edi to BDFE (block of data of folder entry) at esi, advance esi
 866 
; convert FAT entry at edi to BDFE (block of data of folder entry) at esi, advance esi
839 
; destroys eax
 - 
 
840 
        movzx   eax, byte [edi+11]
 - 
 
841 
        mov     [esi], eax	; attributes
 867 
; destroys eax
842 
        mov     eax, [ebp-4]
 868 
        mov     eax, [ebp-4]
- 
 
 869 
        mov     [esi+4], eax	; ASCII/UNICODE name
- 
 
 870 
fat_entry_to_bdfe2:
- 
 
 871 
        movzx   eax, byte [edi+11]
843 
        mov     [esi+4], eax	; ASCII/UNICODE name
 872 
        mov     [esi], eax	; attributes
844 
        movzx   eax, word [edi+14]
 873 
        movzx   eax, word [edi+14]
845 
        call    fat_time_to_bdfe
 874 
        call    fat_time_to_bdfe
846 
        mov     [esi+8], eax	; creation time
 875 
        mov     [esi+8], eax	; creation time
847 
        movzx   eax, word [edi+16]
 876 
        movzx   eax, word [edi+16]
Line 859... Line 888...
859 
        mov     [esi+28], eax	; last write date
 888 
        mov     [esi+28], eax	; last write date
860 
        mov     eax, [edi+28]
 889 
        mov     eax, [edi+28]
861 
        mov     [esi+32], eax	; file size (low dword)
 890 
        mov     [esi+32], eax	; file size (low dword)
862 
        xor     eax, eax
 891 
        xor     eax, eax
863 
        mov     [esi+36], eax	; file size (high dword)
 892 
        mov     [esi+36], eax	; file size (high dword)
- 
 
 893 
        test    ebp, ebp
- 
 
 894 
        jz      .ret
864 
        push    ecx edi
 895 
        push    ecx edi
865 
        lea     edi, [esi+40]
 896 
        lea     edi, [esi+40]
866 
        mov     esi, ebp
 897 
        mov     esi, ebp
867 
        test    byte [esi-4], 1
 898 
        test    byte [esi-4], 1
868 
        jz      .ansi
 899 
        jz      .ansi
Line 870... Line 901...
870 
        rep     movsd
 901 
        rep     movsd
871 
        mov     [edi-2], ax
 902 
        mov     [edi-2], ax
872 
@@:
 903 
@@:
873 
        mov     esi, edi
 904 
        mov     esi, edi
874 
        pop     edi ecx
 905 
        pop     edi ecx
- 
 
 906 
.ret:
875 
        ret
 907 
        ret
876 
.ansi:
 908 
.ansi:
877 
        mov     ecx, 264/4
 909 
        mov     ecx, 264/4
878 
        rep     movsd
 910 
        rep     movsd
879 
        mov     [edi-1], al
 911 
        mov     [edi-1], al
880 
        jmp     @b
 912 
        jmp     @b
Line -... Line 913...
- 
 
 913 
 
- 
 
 914 
bdfe_to_fat_entry:
- 
 
 915 
; convert BDFE at edx to FAT entry at edi
- 
 
 916 
; destroys eax
- 
 
 917 
; attributes byte
- 
 
 918 
        test    byte [edi+11], 8        ; volume label?
- 
 
 919 
        jnz     @f
- 
 
 920 
        mov     al, [edx]
- 
 
 921 
        and     al, 0x27
- 
 
 922 
        and     byte [edi+11], 0x10
- 
 
 923 
        or      byte [edi+11], al
- 
 
 924 
@@:
- 
 
 925 
        mov     eax, [edx+8]
- 
 
 926 
        call    bdfe_to_fat_time
- 
 
 927 
        mov     [edi+14], ax            ; creation time
- 
 
 928 
        mov     eax, [edx+12]
- 
 
 929 
        call    bdfe_to_fat_date
- 
 
 930 
        mov     [edi+16], ax            ; creation date
- 
 
 931 
        mov     eax, [edx+20]
- 
 
 932 
        call    bdfe_to_fat_date
- 
 
 933 
        mov     [edi+18], ax            ; last access date
- 
 
 934 
        mov     eax, [edx+24]
- 
 
 935 
        call    bdfe_to_fat_time
- 
 
 936 
        mov     [edi+22], ax            ; last write time
- 
 
 937 
        mov     eax, [edx+28]
- 
 
 938 
        call    bdfe_to_fat_date
- 
 
 939 
        mov     [edi+24], ax            ; last write date
- 
 
 940 
        ret
- 
 
 941 
 
- 
 
 942 
ramdisk_root_first:
- 
 
 943 
        mov     edi, 0x100000+512*19
- 
 
 944 
        clc
- 
 
 945 
        ret
- 
 
 946 
ramdisk_root_next:
- 
 
 947 
        add     edi, 0x20
- 
 
 948 
        cmp     edi, 0x100000+512*33
- 
 
 949 
        cmc
- 
 
 950 
        ret
881 
 
 951 
 
882 
rd_find_lfn:
 952 
rd_find_lfn:
883 
; in: esi->name
 953 
; in: esi->name
884 
; out: CF=1 - file not found
 954 
; out: CF=1 - file not found
885 
;      else CF=0 and edi->direntry
 955 
;      else CF=0 and edi->direntry
886 
        push    esi ebp edi
 - 
 
887 
        sub     esp, 262*2      ; allocate space for LFN
 - 
 
888 
        mov     ebp, esp        ; ebp points to buffer
 - 
 
889 
        push    0               ; for fat_get_name: read ASCII name
 - 
 
890 
        mov     edi, 0x100000+512*19    ; to root dir
 - 
 
891 
.l1:
 956 
        push    esi edi
892 
        call    fat_get_name
 957 
        push    ramdisk_root_first
893 
        jc      .l2
 958 
        push    ramdisk_root_next
894 
        call    fat_compare_name
 959 
        call    fat_find_lfn
895 
        jz      .found
 - 
 
896 
.l2:
 - 
 
897 
        add     edi, 0x20
 - 
 
898 
        cmp     edi, 0x100000+512*33
 - 
 
899 
        jb      .l1
 - 
 
900 
.notfound:
 - 
 
901 
        add     esp, 262*2+4
 - 
 
902 
        pop     edi ebp esi
 - 
 
903 
        stc
 - 
 
904 
        ret
 - 
 
905 
.found:
 - 
 
906 
; found
 - 
 
907 
; if this is LFN entry, advance to true entry
 - 
 
908 
        cmp     byte [edi+11], 0xF
 - 
 
909 
        jnz     @f
 - 
 
910 
        add     edi, 0x20
 - 
 
911 
@@:
 - 
 
912 
; folders are not supported
 960 
        jc      .notfound
913 
        cmp     byte [esi], 0
 961 
        cmp     byte [esi], 0
914 
        jnz     .notfound
 962 
        jnz     .notfound
- 
 
 963 
        add     esp, 12
- 
 
 964 
        pop     esi
- 
 
 965 
        ret     ; CF=0
- 
 
 966 
.notfound:
915 
        add     esp, 262*2+4+4  ; CF=0
 967 
        add     esp, 8
- 
 
 968 
        pop     edi esi
916 
        pop     ebp esi
 969 
        stc
Line 917... Line 970...
917 
        ret
 970 
        ret
918 
 
 971 
 
919 
;----------------------------------------------------------------
 972 
;----------------------------------------------------------------
Line 1592... Line 1645...
1592 
        call    .read_symbol
 1645 
        call    .read_symbol
1593 
        stosw
 1646 
        stosw
1594 
        loop    .read_symbols
 1647 
        loop    .read_symbols
1595 
        ret
 1648 
        ret
Line -... Line 1649...
- 
 
 1649 
 
- 
 
 1650 
fs_RamdiskGetFileInfo:
- 
 
 1651 
        cmp     byte [esi], 0
- 
 
 1652 
        jnz     @f
- 
 
 1653 
        mov     eax, 2  ; unsupported
- 
 
 1654 
        ret
- 
 
 1655 
@@:
- 
 
 1656 
        push    edi
- 
 
 1657 
        call    rd_find_lfn
- 
 
 1658 
fs_GetFileInfo_finish:
- 
 
 1659 
        jnc     @f
- 
 
 1660 
        pop     edi
- 
 
 1661 
        mov     eax, ERROR_FILE_NOT_FOUND
- 
 
 1662 
        ret
- 
 
 1663 
@@:
- 
 
 1664 
        push    esi ebp
- 
 
 1665 
        xor     ebp, ebp
- 
 
 1666 
        mov     esi, edx
- 
 
 1667 
        and     dword [esi+4], 0
- 
 
 1668 
        call    fat_entry_to_bdfe2
- 
 
 1669 
        pop     ebp esi
- 
 
 1670 
        pop     edi
- 
 
 1671 
        xor     eax, eax
- 
 
 1672 
        ret
- 
 
 1673 
 
- 
 
 1674 
fs_RamdiskSetFileInfo:
- 
 
 1675 
        cmp     byte [esi], 0
- 
 
 1676 
        jnz     @f
- 
 
 1677 
        mov     eax, 2  ; unsupported
- 
 
 1678 
        ret
- 
 
 1679 
@@:
- 
 
 1680 
        push    edi
- 
 
 1681 
        call    rd_find_lfn
- 
 
 1682 
        jnc     @f
- 
 
 1683 
        pop     edi
- 
 
 1684 
        mov     eax, ERROR_FILE_NOT_FOUND
- 
 
 1685 
        ret
- 
 
 1686 
@@:
- 
 
 1687 
        call    bdfe_to_fat_entry
- 
 
 1688 
        pop     edi
- 
 
 1689 
        xor     eax, eax
- 
 
 1690 
        ret
1596 
 
 1691