| 834,13 → 834,42 |
|---|
| pop edx ecx |
| ret |
| |
| bdfe_to_fat_time: |
| push edx |
| mov edx, eax |
| shr eax, 16 |
| and dh, 0x3F |
| shl eax, 6 |
| or al, dh |
| shr dl, 1 |
| and dl, 0x1F |
| shl eax, 5 |
| or al, dl |
| pop edx |
| ret |
| |
| bdfe_to_fat_date: |
| push edx |
| mov edx, eax |
| shr eax, 16 |
| sub ax, 1980 |
| and dh, 0xF |
| shl eax, 4 |
| or al, dh |
| and dl, 0x1F |
| shl eax, 5 |
| or al, dl |
| pop edx |
| ret |
| |
| fat_entry_to_bdfe: |
| ; convert FAT entry at edi to BDFE (block of data of folder entry) at esi, advance esi |
| ; destroys eax |
| mov eax, [ebp-4] |
| mov [esi+4], eax ; ASCII/UNICODE name |
| fat_entry_to_bdfe2: |
| movzx eax, byte [edi+11] |
| mov [esi], eax ; attributes |
| mov eax, [ebp-4] |
| mov [esi+4], eax ; ASCII/UNICODE name |
| movzx eax, word [edi+14] |
| call fat_time_to_bdfe |
| mov [esi+8], eax ; creation time |
| 861,6 → 890,8 |
|---|
| mov [esi+32], eax ; file size (low dword) |
| xor eax, eax |
| mov [esi+36], eax ; file size (high dword) |
| test ebp, ebp |
| jz .ret |
| push ecx edi |
| lea edi, [esi+40] |
| mov esi, ebp |
| 872,6 → 903,7 |
|---|
| @@: |
| mov esi, edi |
| pop edi ecx |
| .ret: |
| ret |
| .ansi: |
| mov ecx, 264/4 |
| 879,42 → 911,63 |
|---|
| mov [edi-1], al |
| jmp @b |
| |
| bdfe_to_fat_entry: |
| ; convert BDFE at edx to FAT entry at edi |
| ; destroys eax |
| ; attributes byte |
| test byte [edi+11], 8 ; volume label? |
| jnz @f |
| mov al, [edx] |
| and al, 0x27 |
| and byte [edi+11], 0x10 |
| or byte [edi+11], al |
| @@: |
| mov eax, [edx+8] |
| call bdfe_to_fat_time |
| mov [edi+14], ax ; creation time |
| mov eax, [edx+12] |
| call bdfe_to_fat_date |
| mov [edi+16], ax ; creation date |
| mov eax, [edx+20] |
| call bdfe_to_fat_date |
| mov [edi+18], ax ; last access date |
| mov eax, [edx+24] |
| call bdfe_to_fat_time |
| mov [edi+22], ax ; last write time |
| mov eax, [edx+28] |
| call bdfe_to_fat_date |
| mov [edi+24], ax ; last write date |
| ret |
| |
| ramdisk_root_first: |
| mov edi, 0x100000+512*19 |
| clc |
| ret |
| ramdisk_root_next: |
| add edi, 0x20 |
| cmp edi, 0x100000+512*33 |
| cmc |
| ret |
| |
| rd_find_lfn: |
| ; in: esi->name |
| ; out: CF=1 - file not found |
| ; else CF=0 and edi->direntry |
| push esi ebp edi |
| sub esp, 262*2 ; allocate space for LFN |
| mov ebp, esp ; ebp points to buffer |
| push 0 ; for fat_get_name: read ASCII name |
| mov edi, 0x100000+512*19 ; to root dir |
| .l1: |
| call fat_get_name |
| jc .l2 |
| call fat_compare_name |
| jz .found |
| .l2: |
| add edi, 0x20 |
| cmp edi, 0x100000+512*33 |
| jb .l1 |
| push esi edi |
| push ramdisk_root_first |
| push ramdisk_root_next |
| call fat_find_lfn |
| jc .notfound |
| cmp byte [esi], 0 |
| jnz .notfound |
| add esp, 12 |
| pop esi |
| ret ; CF=0 |
| .notfound: |
| add esp, 262*2+4 |
| pop edi ebp esi |
| add esp, 8 |
| pop edi esi |
| stc |
| ret |
| .found: |
| ; found |
| ; if this is LFN entry, advance to true entry |
| cmp byte [edi+11], 0xF |
| jnz @f |
| add edi, 0x20 |
| @@: |
| ; folders are not supported |
| cmp byte [esi], 0 |
| jnz .notfound |
| add esp, 262*2+4+4 ; CF=0 |
| pop ebp esi |
| ret |
| |
| ;---------------------------------------------------------------- |
| ; |
| 1594,4 → 1647,46 |
|---|
| loop .read_symbols |
| ret |
| |
| fs_RamdiskGetFileInfo: |
| cmp byte [esi], 0 |
| jnz @f |
| mov eax, 2 ; unsupported |
| ret |
| @@: |
| push edi |
| call rd_find_lfn |
| fs_GetFileInfo_finish: |
| jnc @f |
| pop edi |
| mov eax, ERROR_FILE_NOT_FOUND |
| ret |
| @@: |
| push esi ebp |
| xor ebp, ebp |
| mov esi, edx |
| and dword [esi+4], 0 |
| call fat_entry_to_bdfe2 |
| pop ebp esi |
| pop edi |
| xor eax, eax |
| ret |
| |
| fs_RamdiskSetFileInfo: |
| cmp byte [esi], 0 |
| jnz @f |
| mov eax, 2 ; unsupported |
| ret |
| @@: |
| push edi |
| call rd_find_lfn |
| jnc @f |
| pop edi |
| mov eax, ERROR_FILE_NOT_FOUND |
| ret |
| @@: |
| call bdfe_to_fat_entry |
| pop edi |
| xor eax, eax |
| ret |
| |
| ; \end{diamond} |