| 42,18 → 42,6 |
|---|
| db 10,'floppydisk' |
| dd fs_OnFloppy |
| dd fs_NextFloppy |
| db 3,'hd0' |
| dd fs_OnHd0 |
| dd fs_NextHd0 |
| db 3,'hd1' |
| dd fs_OnHd1 |
| dd fs_NextHd1 |
| db 3,'hd2' |
| dd fs_OnHd2 |
| dd fs_NextHd2 |
| db 3,'hd3' |
| dd fs_OnHd3 |
| dd fs_NextHd3 |
| ;********************************************** |
| db 3,'cd0' |
| dd fs_OnCd0 |
| 76,14 → 64,6 |
|---|
| db 'rd',0 |
| dd fs_HasFloppy |
| db 'fd',0 |
| dd fs_HasHd0 |
| db 'hd0',0 |
| dd fs_HasHd1 |
| db 'hd1',0 |
| dd fs_HasHd2 |
| db 'hd2',0 |
| dd fs_HasHd3 |
| db 'hd3',0 |
| ;********************************************** |
| dd fs_HasCd0 |
| db 'cd0',0 |
| 97,7 → 77,6 |
|---|
| dd 0 |
| |
| fs_additional_handlers: |
| dd biosdisk_handler, biosdisk_enum_root |
| dd dyndisk_handler, dyndisk_enum_root |
| ; add new handlers here |
| dd 0 |
| 523,84 → 502,6 |
|---|
| dd fs_FloppyCreateFolder |
| fs_NumFloppyServices = ($ - fs_FloppyServices)/4 |
| |
| fs_OnHd0: |
| call reserve_hd1 |
| mov eax, [hd_address_table] |
| mov [hdbase], eax ;0x1F0 |
| mov [hdid], 0 |
| push 1 |
| jmp fs_OnHd |
| fs_OnHd1: |
| call reserve_hd1 |
| mov eax, [hd_address_table] |
| mov [hdbase], eax ;0x1F0 |
| mov [hdid], 0x10 |
| push 2 |
| jmp fs_OnHd |
| fs_OnHd2: |
| call reserve_hd1 |
| mov eax, [hd_address_table+16] |
| mov [hdbase], eax ;0x170 |
| mov [hdid], 0 |
| push 3 |
| jmp fs_OnHd |
| fs_OnHd3: |
| call reserve_hd1 |
| mov eax, [hd_address_table+16] |
| mov [hdbase], eax ;0x170 |
| mov [hdid], 0x10 |
| push 4 |
| fs_OnHd: |
| call reserve_hd_channel |
| pop eax |
| mov [hdpos], eax |
| cmp ecx, 0x100 |
| jae fs_OnHdAndBd.nf |
| cmp cl, [DRIVE_DATA+1+eax] |
| fs_OnHdAndBd: |
| jbe @f |
| .nf: |
| call free_hd_channel |
| and [hd1_status], 0 |
| mov dword [image_of_eax], 5 ; not found |
| ret |
| @@: |
| mov [known_part], ecx ; mov [fat32part], ecx |
| push ebx esi |
| call choice_necessity_partition_1 |
| pop esi ebx |
| mov ecx, [ebx+12] |
| mov edx, [ebx+16] |
| ; add edx, std_application_base_address |
| mov eax, [ebx] |
| cmp eax, fs_NumHdServices |
| jae .not_impl |
| add ebx, 4 |
| call dword [fs_HdServices + eax*4] |
| call free_hd_channel |
| and [hd1_status], 0 |
| mov [image_of_eax], eax |
| mov [image_of_ebx], ebx |
| ret |
| .not_impl: |
| call free_hd_channel |
| and [hd1_status], 0 |
| mov dword [image_of_eax], 2 ; not implemented |
| ret |
| |
| fs_HdServices: |
| dd fs_HdRead |
| dd fs_HdReadFolder |
| dd fs_HdRewrite |
| dd fs_HdWrite |
| dd fs_HdSetFileEnd |
| dd fs_HdGetFileInfo |
| dd fs_HdSetFileInfo |
| dd 0 |
| dd fs_HdDelete |
| dd fs_HdCreateFolder |
| fs_NumHdServices = ($ - fs_HdServices)/4 |
| |
| ;******************************************************* |
| fs_OnCd0: |
| call reserve_cd |
| 691,22 → 592,6 |
|---|
| cmp byte [DRIVE_DATA], 0 |
| setnz al |
| ret |
| fs_HasHd0: |
| test byte [DRIVE_DATA+1], 01000000b |
| setnz al |
| ret |
| fs_HasHd1: |
| test byte [DRIVE_DATA+1], 00010000b |
| setnz al |
| ret |
| fs_HasHd2: |
| test byte [DRIVE_DATA+1], 00000100b |
| setnz al |
| ret |
| fs_HasHd3: |
| test byte [DRIVE_DATA+1], 00000001b |
| setnz al |
| ret |
| |
| ;******************************************************* |
| fs_HasCd0: |
| 762,27 → 647,6 |
|---|
| stc |
| ret |
| |
| ; on hdx, we have partitions from 1 to [0x40002+x] |
| fs_NextHd0: |
| push 0 |
| jmp fs_NextHd |
| fs_NextHd1: |
| push 1 |
| jmp fs_NextHd |
| fs_NextHd2: |
| push 2 |
| jmp fs_NextHd |
| fs_NextHd3: |
| push 3 |
| fs_NextHd: |
| pop ecx |
| movzx ecx, byte [DRIVE_DATA+2+ecx] |
| cmp eax, ecx |
| jae fs_NextFloppy.no2 |
| inc eax |
| clc |
| ret |
| |
| ;******************************************************* |
| fs_NextCd: |
| ; we always have /cdX/1 |
| 795,147 → 659,6 |
|---|
| ret |
| ;******************************************************* |
| |
| ; Additional FS handlers. |
| ; This handler gets the control each time when fn 70 is called |
| ; with unknown item of root subdirectory. |
| ; in: esi -> name |
| ; ebp = 0 or rest of name relative to esi |
| ; out: if the handler processes path, he must not return in file_system_lfn, |
| ; but instead pop return address and return directly to the caller |
| ; otherwise simply return |
| |
| ; here we test for /bd<N>/... - BIOS disks |
| biosdisk_handler: |
| cmp [NumBiosDisks], 0 |
| jz .ret |
| mov al, [esi] |
| or al, 20h |
| cmp al, 'b' |
| jnz .ret |
| mov al, [esi+1] |
| or al, 20h |
| cmp al, 'd' |
| jnz .ret |
| push esi |
| inc esi |
| inc esi |
| cmp byte [esi], '0' |
| jb .ret2 |
| cmp byte [esi], '9' |
| ja .ret2 |
| xor edx, edx |
| @@: |
| lodsb |
| test al, al |
| jz .ok |
| cmp al, '/' |
| jz .ok |
| sub al, '0' |
| cmp al, 9 |
| ja .ret2 |
| lea edx, [edx*5] |
| lea edx, [edx*2+eax] |
| jmp @b |
| .ret2: |
| pop esi |
| .ret: |
| ret |
| .ok: |
| cmp al, '/' |
| jz @f |
| dec esi |
| @@: |
| add dl, 80h |
| xor ecx, ecx |
| @@: |
| cmp dl, [BiosDisksData+ecx*4] |
| jz .ok2 |
| inc ecx |
| cmp ecx, [NumBiosDisks] |
| jb @b |
| jmp .ret2 |
| .ok2: |
| add esp, 8 |
| test al, al |
| jnz @f |
| mov esi, fs_BdNext |
| jmp file_system_lfn.maindir_noesi |
| @@: |
| push ecx |
| push ecx |
| push biosdisk_cleanup |
| push fs_OnBd |
| mov edi, esp |
| jmp file_system_lfn.found2 |
| |
| fs_BdNext: |
| cmp eax, [BiosDiskPartitions+ecx*4] |
| inc eax |
| cmc |
| biosdisk_cleanup: |
| ret |
| |
| fs_OnBd: |
| pop edx edx edx edx |
| ; edx = disk number, ecx = partition number |
| ; esi+ebp = name |
| call reserve_hd1 |
| add edx, 0x80 |
| mov [hdpos], edx |
| cmp ecx, [BiosDiskPartitions+(edx-0x80)*4] |
| jmp fs_OnHdAndBd |
| |
| ; This handler is called when virtual root is enumerated |
| ; and must return all items which can be handled by this. |
| ; It is called several times, first time with eax=0 |
| ; in: eax = 0 for first call, previously returned value for subsequent calls |
| ; out: eax = 0 => no more items |
| ; eax != 0 => buffer pointed to by edi contains name of item |
| |
| ; here we enumerate existing BIOS disks /bd<N> |
| biosdisk_enum_root: |
| cmp eax, [NumBiosDisks] |
| jae .end |
| push eax |
| movzx eax, byte [BiosDisksData+eax*4] |
| sub al, 80h |
| push eax |
| mov al, 'b' |
| stosb |
| mov al, 'd' |
| stosb |
| pop eax |
| cmp al, 10 |
| jae .big |
| add al, '0' |
| stosb |
| mov byte [edi], 0 |
| pop eax |
| inc eax |
| ret |
| .end: |
| xor eax, eax |
| ret |
| .big: |
| push ecx edx |
| push -'0' |
| mov ecx, 10 |
| @@: |
| xor edx, edx |
| div ecx |
| push edx |
| test eax, eax |
| jnz @b |
| xchg eax, edx |
| @@: |
| pop eax |
| add al, '0' |
| stosb |
| jnz @b |
| pop edx ecx |
| pop eax |
| inc eax |
| ret |
| ;----------------------------------------------------------------------------- |
| process_replace_file_name: |
| ; in |