forked from KolibriOS/kolibrios
1096 lines
26 KiB
PHP
1096 lines
26 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; System service for filesystem call ;;
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;; (C) 2004 Ville Turjanmaa, License: GPL ;;
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;; ;;
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;; 15.01.2005 get file size/attr/date, file_append (only for hd) - ATV ;;
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;; 23.11.2004 test if hd/partition is set - ATV ;;
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;; 18.11.2004 get_disk_info and more error codes - ATV ;;
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;; 08.11.2004 expand_pathz and rename (only for hd) - ATV ;;
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;; 20.10.2004 Makedir/Removedir (only for hd) - ATV ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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iglobal
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dir0: db 'HARDDISK '
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db 'RAMDISK '
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db 'FLOPPYDISK '
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db 0
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dir1: db 'FIRST '
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db 'SECOND '
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db 'THIRD '
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db 'FOURTH '
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db 0
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not_select_IDE db 0
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hd_address_table: dd 0x1f0,0x00,0x1f0,0x10
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dd 0x170,0x00,0x170,0x10
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endg
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file_system:
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; IN:
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;
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; eax = 0 ; read file /RamDisk/First 6 /HardDisk/First 30
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; eax = 1 ; write file /RamDisk/First 33 /HardDisk/First 56
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; eax = 2 ; delete file /RamDisk/First 32 /HardDisk/First 57
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; eax = 3 ; append to a file /RamDisk/First ?? /HardDisk/First ??
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; eax = 4 ; makedir
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; eax = 5 ; rename file/directory
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; eax = 8 ; lba read
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; eax = 12 ; get_filesize
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; eax = 13 ; get_fileattr
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; eax = 14 ; get_filedate
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; eax = 15 ; get_disk_info
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; eax = 16 ; start application
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;
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; OUT:
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;
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; eax = 0 : read ok
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; eax = 1 : no fd base and/or partition defined
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; eax = 2 : yet unsupported FS
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; eax = 3 : unknown FS
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; eax = 4 : partition not defined at hd
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; eax = 5 : file not found
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; eax = 6 : end of file
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; eax = 7 : memory pointer not in application area
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; eax = 8 : disk full
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; eax = 9 : fat table corrupted
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; eax = 10 : access denied
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;
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; ebx = size
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; Extract parameters
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mov edi,[0x3010]
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add eax,[edi+0x10] ; abs start of info block
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cmp dword [eax+0],12 ; Get file size
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je fs_read
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cmp dword [eax+0],13 ; Get file attribute
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je fs_read
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cmp dword [eax+0],14 ; Get file date/time
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je fs_read
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cmp dword [eax+0],15 ; GET_DISK_INFO
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je fs_info
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cmp dword [eax+0],16 ; RUN - dont care about read&write blocks
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je fs_read
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cmp dword [eax+0],5 ; RENAME - dont care about read&write blocks
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je fs_read
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cmp dword [eax+0],4 ; MAKEDIR - dont care about read&write blocks
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je fs_read
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cmp dword [eax+0],2 ; DELETE - dont care about read&write blocks
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je fs_read
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cmp dword [0x3000],1 ; no memory checks for kernel requests
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jz no_checks_for_kernel
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;iglobal
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; buffer_failed db 'Buffer check failed',13,10,0
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;endg
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mov edx,eax
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cmp dword [eax+0],1
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jz .check_for_write_op
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cmp dword [eax+0],3
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jnz .usual_check
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.check_for_write_op:
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mov ebx,[eax+12]
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add ebx,std_application_base_address
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mov ecx,[eax+8]
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call check_region
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test eax,eax
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jnz area_in_app_mem
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.error_output:
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mov esi,buffer_failed
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call sys_msg_board_str
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mov eax,7
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mov dword [esp+36],7
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ret
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iglobal
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buffer_failed db 'Buffer check failed',13,10,0
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endg
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.usual_check:
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cmp dword [eax+0],0
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mov ecx,512
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jnz .small_size
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mov ecx,[eax+8]
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shl ecx,9
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.small_size:
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mov ebx,[eax+12]
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add ebx,std_application_base_address
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call check_region
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test eax,eax
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jz .error_output
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jmp area_in_app_mem
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; mov ebx,[0x3000] ; pointer in application memory ?
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; shl ebx,8
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; mov ebx,[ebx+0x80000+0x8c]
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; mov ebp,ebx ; save for checking at stack save
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; sub ebp,[eax+12]
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; shr ebp,9
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; sub ebx,512 ; need atleast one block
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; cmp ebx,[eax+12]
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; ja area_in_app_mem
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; mov eax,7
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; mov dword [esp+36],7
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; ret
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area_in_app_mem:
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mov eax,edx
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no_checks_for_kernel:
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cmp dword [eax+0],3 ; APPEND - allow write 0 bytes (truncate)
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je fs_read
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cmp dword [eax+8],0 ; read or write 0 blocks/bytes ?
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jne fs_read
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mov dword [esp+36],0
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ret
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fs_read:
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mov ebx,[eax+20] ; program wants root directory ?
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test bl,bl
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je fs_getroot
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test bh,bh
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jne fs_noroot
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fs_getroot:
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mov edx,[edi+0x10]
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mov esi,dir0
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mov edi,[eax+12]
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add edi,edx
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mov ecx,11
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cld
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rep movsb
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mov eax,0x10
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stosb
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add edi,32-11-1
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mov ecx,11
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rep movsb
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stosb
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mov dword [esp+36],0 ; ok read
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mov dword [esp+24],32*2 ; size of root
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ret
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fs_info: ;start of code - Mihasik
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mov edi,eax
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push edi
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cmp [eax+21],byte 'h'
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je fs_info_h
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cmp [eax+21],byte 'H'
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je fs_info_h
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cmp [eax+21],byte 'r'
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je fs_info_r
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cmp [eax+21],byte 'R'
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je fs_info_r
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mov eax,3 ;if unknown disk
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xor ebx,ebx
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xor ecx,ecx
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xor edx,edx
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jmp fs_info1
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fs_info_r:
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call ramdisk_free_space ;if ramdisk
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mov ecx,edi ;free space in ecx
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shr ecx,9 ;free clusters
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mov ebx,2847 ;total clusters
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mov edx,512 ;cluster size
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xor eax,eax ;always 0
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jmp fs_info1
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fs_info_h: ;if harddisk
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call get_hd_info
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fs_info1:
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pop edi
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mov [esp+36],eax
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mov [esp+24],ebx ; total clusters on disk
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mov [esp+32],ecx ; free clusters on disk
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mov [edi],edx ; cluster size in bytes
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ret ;end of code - Mihasik
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fs_noroot:
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mov ebx,[eax+0]
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push ebx ; read/write/delete/.../makedir/rename/lba/run
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mov ebx,[eax+4]
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push ebx ; 512 block number to read
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mov ebx,[eax+8]
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; cmp dword [eax+0],0 ; if read, check that the data stays at
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; jne ret_size_fine ; application memory
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; cmp ebx,ebp
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; jbe ret_size_fine
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; mov ebx,ebp
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; ret_size_fine:
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push ebx ; bytes to write/append or 512 blocks to read
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mov ebx,[eax+12]
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add ebx,[edi+0x10]
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push ebx ; abs start of return/save area
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lea esi,[eax+20] ; abs start of dir + filename
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mov edi,[edi+0x10] ; abs start of work area
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add edi,[eax+16]
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call expand_pathz
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push edi ; dir start
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push ebx ; name of file start
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mov ebx,[dir0+11] ; /RAMDISK
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mov eax,[edi+1]
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cmp eax,'RD '
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je fs_yesramdisk
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cmp eax,ebx
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jne fs_noramdisk
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fs_yesramdisk:
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cmp byte [edi+1+11],0
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je fs_give_dir1
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mov ebx,[dir1] ; /FIRST
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mov eax,[edi+1+12]
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cmp eax,'1 '
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je fs_yesramdisk_first
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cmp eax,ebx
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jne fs_noramdisk
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fs_yesramdisk_first:
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cmp dword [esp+20],8 ; LBA read ramdisk
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jne fs_no_LBA_read_ramdisk
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mov eax,[esp+16] ; LBA block to read
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mov ecx,[esp+8] ; abs pointer to return area
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call LBA_read_ramdisk
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jmp file_system_return
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fs_no_LBA_read_ramdisk:
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cmp dword [esp+20],0 ; READ
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jne fs_noramdisk_read
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mov eax,[esp+4] ; fname
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add eax,2*12+1
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mov ebx,[esp+16] ; block start
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inc ebx
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mov ecx,[esp+12] ; block count
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mov edx,[esp+8] ; return
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mov esi,[esp+0]
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sub esi,eax
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add esi,12+1 ; file name length
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call fileread
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jmp file_system_return
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fs_noramdisk_read:
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cmp dword [esp+20],1 ; WRITE
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jne fs_noramdisk_write
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mov eax,[esp+4] ; fname
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add eax,2*12+1
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mov ebx,[esp+8] ; buffer
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mov ecx,[esp+12] ; count to write
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mov edx,0 ; create new
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call filesave
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; eax=0 ok - eax=1 not enough free space
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jmp file_system_return
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fs_noramdisk_write:
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cmp dword [esp+20],16 ; START APPLICATION
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jne fs_noramdisk_start_application
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mov eax,[esp+4] ; fname
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add eax,2*12+1
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xor ebx,ebx ; parameters to pass
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cmp dword [esp+12],0
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je no_fl_start_param
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mov ebx,[0x3010]
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mov ebx,[ebx+0x10]
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add ebx,[esp+12]
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no_fl_start_param:
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call start_application_fl
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jmp file_system_return
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fs_noramdisk_start_application: ;there's new code - Mihasik
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cmp dword [esp+20],2 ;DELETE
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jne fs_noramdisk_delete
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mov eax,[esp+4] ; fname
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add eax,2*12+1
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call filedelete
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jmp file_system_return
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fs_noramdisk_delete:
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cmp dword [esp+20],12 ;GET TIME,DATE,SIZE AND ATTRS
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jb fs_noramdisk_getinfo
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cmp dword [esp+20],14
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ja fs_noramdisk_getinfo
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mov eax,[esp+4] ; fname
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add eax,2*12+1
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mov ebx,[esp+20]
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mov ecx,[esp+0]
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sub ecx,eax
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add ecx,12+1 ; file name length
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call rd_getfileinfo
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jmp file_system_return
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fs_noramdisk_getinfo: ;End of code - Mihasik
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fs_noramdisk:
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;********************************************************************
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mov ebx,[dir0+22] ; /FLOPPYDISK
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mov eax,[edi+1]
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cmp eax,'FD '
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je fs_yesflpdisk
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cmp eax,ebx
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jne fs_noflpdisk
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fs_yesflpdisk:
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call reserve_flp
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cmp byte [edi+1+11],0
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je fs_give_dir1
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mov ebx,[dir1] ; /FIRST
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mov eax,[edi+1+12]
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cmp eax,'1 '
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je fs_yesflpdisk_first
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cmp eax,ebx
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je fs_yesflpdisk_first
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mov ebx,[dir1+11] ; /SECOND
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cmp eax,'2 '
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je fs_yesflpdisk_second
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cmp eax,ebx
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jne fs_noflpdisk
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jmp fs_yesflpdisk_second
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fs_yesflpdisk_first:
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mov [flp_number],1
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jmp fs_yesflpdisk_start
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fs_yesflpdisk_second:
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mov [flp_number],2
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fs_yesflpdisk_start:
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cmp dword [esp+20],0 ; READ
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jne fs_noflpdisk_read
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mov eax,[esp+4] ; fname
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add eax,2*12+1
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mov ebx,[esp+16] ; block start
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inc ebx
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mov ecx,[esp+12] ; block count
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mov edx,[esp+8] ; return
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mov esi,[esp+0]
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sub esi,eax
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add esi,12+1 ; file name length
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call floppy_fileread
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jmp file_system_return
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fs_noflpdisk_read:
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cmp dword [esp+20],1 ; WRITE
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jne fs_noflpdisk_write
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mov eax,[esp+4] ; fname
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add eax,2*12+1
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mov ebx,[esp+8] ; buffer
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mov ecx,[esp+12] ; count to write
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mov edx,0 ; create new
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call floppy_filesave
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; eax=0 ok - eax=1 not enough free space
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jmp file_system_return
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fs_noflpdisk_write:
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cmp dword [esp+20],2 ; DELETE
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jne fs_noflpdisk_delete
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mov eax,[esp+4] ; fname
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add eax,2*12+1
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call floppy_filedelete
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mov [flp_status],0
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jmp file_system_return
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fs_noflpdisk_delete:
|
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cmp dword [esp+20],16 ; START APPLICATION
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jne fs_noflpdisk_start_application
|
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mov eax,[esp+4] ; fname
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add eax,2*12+1
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|
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xor ebx,ebx ; parameters to pass
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cmp dword [esp+12],0
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je no_flp_start_param
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mov ebx,[0x3010]
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mov ebx,[ebx+0x10]
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add ebx,[esp+12]
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no_flp_start_param:
|
||
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call start_application_floppy
|
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jmp file_system_return
|
||
|
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fs_noflpdisk_start_application:
|
||
|
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fs_noflpdisk:
|
||
;*****************************************************************
|
||
|
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mov eax,[edi+1]
|
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cmp eax,'HD0 '
|
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je fs_yesharddisk_IDE0
|
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cmp eax,'HD1 '
|
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je fs_yesharddisk_IDE1
|
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cmp eax,'HD2 '
|
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je fs_yesharddisk_IDE2
|
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cmp eax,'HD3 '
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je fs_yesharddisk_IDE3
|
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jmp old_path_harddisk
|
||
fs_yesharddisk_IDE0:
|
||
call reserve_hd1
|
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mov [hdbase],0x1f0
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mov [hdid],0x0
|
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mov [hdpos],1
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||
jmp fs_yesharddisk_partition
|
||
fs_yesharddisk_IDE1:
|
||
call reserve_hd1
|
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mov [hdbase],0x1f0
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mov [hdid],0x10
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mov [hdpos],2
|
||
jmp fs_yesharddisk_partition
|
||
fs_yesharddisk_IDE2:
|
||
call reserve_hd1
|
||
mov [hdbase],0x170
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||
mov [hdid],0x0
|
||
mov [hdpos],3
|
||
jmp fs_yesharddisk_partition
|
||
fs_yesharddisk_IDE3:
|
||
call reserve_hd1
|
||
mov [hdbase],0x170
|
||
mov [hdid],0x10
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||
mov [hdpos],4
|
||
fs_yesharddisk_partition:
|
||
; call choice_necessity_partition
|
||
; jmp fs_yesharddisk_all
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||
jmp fs_for_new_semantic
|
||
|
||
choice_necessity_partition:
|
||
mov eax,[edi+1+12]
|
||
call StringToNumber
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||
mov [fat32part],eax
|
||
choice_necessity_partition_1:
|
||
mov [0xfe10],dword 0 ; entries in hd cache
|
||
mov ecx,[hdpos]
|
||
xor eax,eax
|
||
mov edx,0x40002
|
||
search_partition_array:
|
||
mov bl,[edx]
|
||
movzx ebx,bl
|
||
add eax,ebx
|
||
inc edx
|
||
loop search_partition_array
|
||
sub eax,ebx
|
||
add eax,[fat32part]
|
||
dec eax
|
||
xor edx,edx
|
||
imul eax,100
|
||
add eax,0x4000a
|
||
mov [transfer_adress],eax
|
||
call partition_data_transfer_1
|
||
ret
|
||
|
||
old_path_harddisk:
|
||
mov ebx,[dir0] ; /HARDDISK
|
||
mov eax,[edi+1]
|
||
cmp eax,'HD '
|
||
je fs_yesharddisk
|
||
cmp eax,ebx
|
||
jne fs_noharddisk
|
||
|
||
fs_yesharddisk:
|
||
call reserve_hd1
|
||
|
||
cmp dword [esp+20],8 ; LBA read
|
||
jne fs_no_LBA_read
|
||
mov eax,[esp+16] ; LBA block to read
|
||
lea ebx,[edi+1+12] ; pointer to FIRST/SECOND/THIRD/FOURTH
|
||
mov ecx,[esp+8] ; abs pointer to return area
|
||
call LBA_read
|
||
jmp file_system_return
|
||
|
||
fs_no_LBA_read:
|
||
|
||
cmp byte [edi+1+11],0 ; directory read
|
||
je fs_give_dir1
|
||
fs_for_new_semantic:
|
||
call choice_necessity_partition
|
||
|
||
fs_yesharddisk_all:
|
||
mov eax,1
|
||
cmp [hdpos],0 ; is hd base set?
|
||
jz file_system_return ; no
|
||
cmp [fat32part],0 ; is partition set?
|
||
jz file_system_return ; no
|
||
|
||
cmp dword [esp+20],0 ; READ
|
||
jne fs_noharddisk_read
|
||
|
||
mov eax,[esp+0] ; /fname
|
||
lea edi,[eax+12]
|
||
mov byte [eax],0 ; path to asciiz
|
||
inc eax ; filename start
|
||
|
||
mov ebx,[esp+12] ; count to read
|
||
mov ecx,[esp+8] ; buffer
|
||
mov edx,[esp+4]
|
||
add edx,12*2 ; dir start
|
||
sub edi,edx ; path length
|
||
mov esi,[esp+16] ; blocks to read
|
||
|
||
call file_read
|
||
|
||
mov edi,[esp+0]
|
||
mov byte [edi],'/'
|
||
|
||
jmp file_system_return
|
||
|
||
fs_noharddisk_read:
|
||
|
||
|
||
cmp dword [esp+20],1 ; WRITE
|
||
jne fs_noharddisk_write
|
||
|
||
mov eax,[esp+0] ; /fname
|
||
mov byte [eax],0 ; path to asciiz
|
||
inc eax ; filename start
|
||
|
||
mov ebx,[esp+12] ; count to write
|
||
mov ecx,[esp+8] ; buffer
|
||
mov edx,[esp+4]
|
||
add edx,12*2 ; path start
|
||
|
||
call file_write
|
||
|
||
mov edi,[esp+0]
|
||
mov byte [edi],'/'
|
||
|
||
; eax=0 ok - eax=1 not enough free space
|
||
|
||
jmp file_system_return
|
||
|
||
|
||
fs_noharddisk_write:
|
||
|
||
cmp dword [esp+20],2 ; DELETE
|
||
jne fs_noharddisk_delete
|
||
|
||
mov eax,[esp+0] ; /dirname or /filename
|
||
mov byte [eax],0 ; path to asciiz
|
||
inc eax ; filename start
|
||
mov edx,[esp+4]
|
||
add edx,12*2 ; path start
|
||
|
||
call removedir
|
||
|
||
mov edi,[esp+0]
|
||
mov byte [edi],'/'
|
||
|
||
jmp file_system_return
|
||
|
||
fs_noharddisk_delete:
|
||
|
||
cmp dword [esp+20],3 ; APPEND
|
||
jne fs_noharddisk_append
|
||
|
||
mov eax,[esp+0] ; /dirname or /filename
|
||
mov byte [eax],0 ; path to asciiz
|
||
inc eax ; filename start
|
||
mov edx,[esp+4]
|
||
add edx,12*2 ; path start
|
||
mov ecx,[esp+8] ; buffer
|
||
mov ebx,[esp+12] ; count to write
|
||
mov esi,[esp+16] ; bytes to skip over
|
||
|
||
call file_append
|
||
|
||
mov edi,[esp+0]
|
||
mov byte [edi],'/'
|
||
|
||
jmp file_system_return
|
||
|
||
fs_noharddisk_append:
|
||
|
||
cmp dword [esp+20],4 ; MAKEDIR
|
||
jne fs_noharddisk_makedir
|
||
|
||
mov eax,[esp+0] ; /dirname
|
||
mov byte [eax],0 ; path to asciiz
|
||
inc eax ; filename start
|
||
mov edx,[esp+4]
|
||
add edx,12*2 ; path start
|
||
|
||
call makedir
|
||
|
||
mov edi,[esp+0]
|
||
mov byte [edi],'/'
|
||
|
||
jmp file_system_return
|
||
|
||
fs_noharddisk_makedir:
|
||
|
||
cmp dword [esp+20],5 ; RENAME
|
||
jne fs_noharddisk_rename
|
||
|
||
mov edi,[esp+0] ; start of source file name
|
||
add edi,12+1 ; continue after name
|
||
call expand_pathz ; convert destination name
|
||
|
||
mov edx,[dir0] ; /HARDDISK
|
||
mov eax,[edi+1]
|
||
cmp eax,'HD '
|
||
je fs_rename_test1
|
||
cmp eax,edx
|
||
jne fs_rename_error
|
||
|
||
fs_rename_test1:
|
||
mov edx,[dir1] ; /FIRST
|
||
mov eax,[edi+1+12]
|
||
cmp eax,'1 '
|
||
je fs_rename_start
|
||
cmp eax,edx
|
||
jne fs_rename_error
|
||
|
||
fs_rename_start:
|
||
mov byte [ebx],0 ; path to asciiz
|
||
inc ebx ; filename start
|
||
add edi,12*2 ; path start
|
||
cmp byte [ebx],0
|
||
je fs_rename_error
|
||
cmp byte [ebx],32
|
||
je fs_rename_error
|
||
|
||
mov eax,[esp+0] ; /filename
|
||
mov byte [eax],0 ; path to asciiz
|
||
inc eax ; filename start
|
||
mov edx,[esp+4]
|
||
add edx,12*2 ; path start
|
||
|
||
call rename
|
||
|
||
mov edi,[esp+0]
|
||
mov byte [edi],'/'
|
||
|
||
jmp file_system_return
|
||
|
||
fs_rename_error:
|
||
mov eax,4 ; partition not defined at hd
|
||
jmp file_system_return
|
||
|
||
fs_noharddisk_rename:
|
||
|
||
cmp dword [esp+20],12 ; get FILESIZE
|
||
jne fs_noharddisk_get_filesize
|
||
|
||
mov eax,[esp+0] ; /fname
|
||
lea edi,[eax+12]
|
||
mov byte [eax],0 ; path to asciiz
|
||
inc eax ; filename start
|
||
mov edx,[esp+4]
|
||
add edx,12*2 ; path start
|
||
sub edi,edx ; path length
|
||
|
||
call get_filesize
|
||
|
||
mov edi,[esp+0]
|
||
mov byte [edi],'/'
|
||
|
||
jmp file_system_return
|
||
|
||
fs_noharddisk_get_filesize:
|
||
|
||
cmp dword [esp+20],13 ; get FILEATTR
|
||
jne fs_noharddisk_get_fileattr
|
||
|
||
mov eax,[esp+0] ; /dirname
|
||
mov byte [eax],0 ; path to asciiz
|
||
inc eax ; filename start
|
||
mov edx,[esp+4]
|
||
add edx,12*2 ; path start
|
||
|
||
call get_fileattr
|
||
|
||
mov edi,[esp+0]
|
||
mov byte [edi],'/'
|
||
|
||
jmp file_system_return
|
||
|
||
fs_noharddisk_get_fileattr:
|
||
|
||
cmp dword [esp+20],14 ; get FILEDATE
|
||
jne fs_noharddisk_get_filedate
|
||
|
||
mov eax,[esp+0] ; /dirname
|
||
mov byte [eax],0 ; path to asciiz
|
||
inc eax ; filename start
|
||
mov edx,[esp+4]
|
||
add edx,12*2 ; path start
|
||
|
||
call get_filedate
|
||
|
||
mov edi,[esp+0]
|
||
mov byte [edi],'/'
|
||
|
||
jmp file_system_return
|
||
|
||
fs_noharddisk_get_filedate:
|
||
|
||
cmp dword [esp+20],16 ; START APPLICATION
|
||
jne fs_noharddisk_start_application
|
||
|
||
mov eax,[esp+4] ; fname
|
||
add eax,12*2
|
||
|
||
mov ebx,[esp+0] ; length
|
||
sub ebx,eax
|
||
add ebx,12
|
||
|
||
mov ecx,[esp+4] ; work area
|
||
add ecx,512
|
||
|
||
xor ebp,ebp ; parameters to pass
|
||
cmp dword [esp+12],0
|
||
je no_hd_start_param
|
||
mov ebp,[0x3010]
|
||
mov ebp,[ebp+0x10]
|
||
add ebp,[esp+12]
|
||
no_hd_start_param:
|
||
|
||
call start_application_hd
|
||
|
||
jmp file_system_return
|
||
|
||
fs_noharddisk_start_application:
|
||
|
||
fs_noharddisk:
|
||
|
||
file_system_return:
|
||
|
||
add esp,24
|
||
|
||
mov [esp+36],eax
|
||
mov [esp+24],ebx
|
||
ret
|
||
|
||
|
||
fs_give_dir1:
|
||
|
||
mov eax,0x10
|
||
mov ebx,1
|
||
mov edi,[esp+8]
|
||
mov esi,dir1
|
||
fs_d1_new:
|
||
mov ecx,11
|
||
cld
|
||
rep movsb
|
||
stosb
|
||
add edi,32-11-1
|
||
dec ebx
|
||
jne fs_d1_new
|
||
|
||
add esp,24
|
||
|
||
mov dword [esp+36],0 ; ok read
|
||
mov dword [esp+24],32*1 ; dir/data size
|
||
ret
|
||
|
||
|
||
|
||
LBA_read_ramdisk:
|
||
|
||
cmp [lba_read_enabled],1
|
||
je lbarrl1
|
||
|
||
xor ebx,ebx
|
||
mov eax,2
|
||
ret
|
||
|
||
lbarrl1:
|
||
|
||
cmp eax,18*2*80
|
||
jb lbarrl2
|
||
xor ebx,ebx
|
||
mov eax,3
|
||
ret
|
||
|
||
lbarrl2:
|
||
|
||
pushad
|
||
|
||
call restorefatchain
|
||
|
||
mov edi,ecx
|
||
mov esi,eax
|
||
|
||
shl esi,9
|
||
add esi,0x100000
|
||
mov ecx,512/4
|
||
cld
|
||
rep movsd
|
||
|
||
popad
|
||
|
||
xor ebx,ebx
|
||
xor eax,eax
|
||
ret
|
||
|
||
LBA_read:
|
||
|
||
; IN:
|
||
;
|
||
; eax = LBA block to read
|
||
; ebx = pointer to FIRST/SECOND/THIRD/FOURTH
|
||
; ecx = abs pointer to return area
|
||
|
||
cmp [lba_read_enabled],1
|
||
je lbarl1
|
||
mov eax,2
|
||
ret
|
||
|
||
lbarl1:
|
||
|
||
; call reserve_hd1
|
||
|
||
push eax
|
||
push ecx
|
||
|
||
mov edi,hd_address_table
|
||
mov esi,dir1
|
||
mov eax,[ebx]
|
||
mov edx,'1 '
|
||
mov ecx,4
|
||
blar0:
|
||
cmp eax,[esi]
|
||
je blar2
|
||
cmp eax,edx
|
||
je blar2
|
||
inc edx
|
||
add edi,8
|
||
add esi,11
|
||
dec ecx
|
||
jnz blar0
|
||
|
||
mov eax,1
|
||
mov ebx,1
|
||
jmp LBA_read_ret
|
||
|
||
blar2:
|
||
mov eax,[edi+0]
|
||
mov ebx,[edi+4]
|
||
|
||
call wait_for_hd_idle
|
||
|
||
; eax = hd port
|
||
; ebx = set for primary (0x00) or slave (0x10)
|
||
|
||
cli
|
||
|
||
mov edx,eax
|
||
inc edx
|
||
xor eax,eax
|
||
out dx,al
|
||
inc edx
|
||
inc eax
|
||
out dx,al
|
||
inc edx
|
||
mov eax,[esp+4]
|
||
out dx,al
|
||
shr eax,8
|
||
inc edx
|
||
out dx,al
|
||
shr eax,8
|
||
inc edx
|
||
out dx,al
|
||
shr eax,8
|
||
inc edx
|
||
and al,1+2+4+8
|
||
add al,bl
|
||
add al,128+64+32
|
||
out dx,al
|
||
|
||
inc edx
|
||
mov al,20h
|
||
out dx,al
|
||
|
||
sti
|
||
|
||
call wait_for_sector_buffer
|
||
|
||
cli
|
||
|
||
mov edi,[esp+0]
|
||
mov ecx,256
|
||
sub edx,7
|
||
cld
|
||
rep insw
|
||
|
||
sti
|
||
|
||
xor eax,eax
|
||
xor ebx,ebx
|
||
|
||
LBA_read_ret:
|
||
|
||
mov [hd1_status],0
|
||
add esp,2*4
|
||
|
||
ret
|
||
|
||
|
||
expand_pathz:
|
||
; IN:
|
||
; esi = asciiz path & file
|
||
; edi = buffer for path & file name
|
||
; OUT:
|
||
; edi = directory & file : / 11 + / 11 + / 11 - zero terminated
|
||
; ebx = /file name - zero terminated
|
||
; esi = pointer after source
|
||
|
||
push eax
|
||
push ecx
|
||
push edi ;[esp+0]
|
||
|
||
pathz_start:
|
||
mov byte [edi],'/'
|
||
inc edi
|
||
mov al,32
|
||
mov ecx,11
|
||
cld
|
||
rep stosb ; clear filename area
|
||
sub edi,11
|
||
mov ebx,edi ; start of dir/file name
|
||
|
||
pathz_new_char:
|
||
mov al,[esi]
|
||
inc esi
|
||
cmp al,0
|
||
je pathz_end
|
||
|
||
cmp al,'/'
|
||
jne pathz_not_path
|
||
cmp edi,ebx ; skip first '/'
|
||
jz pathz_new_char
|
||
lea edi,[ebx+11] ; start of next directory
|
||
jmp pathz_start
|
||
|
||
pathz_not_path:
|
||
cmp al,'.'
|
||
jne pathz_not_ext
|
||
lea edi,[ebx+8] ; start of extension
|
||
jmp pathz_new_char
|
||
|
||
pathz_not_ext:
|
||
cmp al,'a'
|
||
jb pathz_not_low
|
||
cmp al,'z'
|
||
ja pathz_not_low
|
||
sub al,0x20 ; char to uppercase
|
||
|
||
pathz_not_low:
|
||
mov [edi],al
|
||
inc edi
|
||
mov eax,[esp+0] ; start_of_dest_path
|
||
add eax,512 ; keep maximum path under 512 bytes
|
||
cmp edi,eax
|
||
jb pathz_new_char
|
||
|
||
pathz_end:
|
||
cmp ebx,edi ; if path end with '/'
|
||
jnz pathz_put_zero ; go back 1 level
|
||
sub ebx,12
|
||
|
||
pathz_put_zero:
|
||
mov byte [ebx+11],0
|
||
dec ebx ; include '/' char into file name
|
||
pop edi
|
||
pop ecx
|
||
pop eax
|
||
ret
|
||
|
||
;*******************************************
|
||
;* string to number
|
||
;* input eax - 4 byte string
|
||
;* output eax - number
|
||
;*******************************************
|
||
StringToNumber:
|
||
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>
|
||
; <20><><EFBFBD><EFBFBD>:
|
||
; EDI - <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> 0Dh
|
||
; <20><><EFBFBD><EFBFBD><EFBFBD>:
|
||
; CF - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:
|
||
; 0 - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>;
|
||
; 1 - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
; <20><><EFBFBD><EFBFBD> CF=0, <20><> AX - <20><><EFBFBD><EFBFBD><EFBFBD>.
|
||
|
||
push bx
|
||
push cx
|
||
push dx
|
||
push edi
|
||
mov [partition_string],eax
|
||
mov edi,partition_string
|
||
xor cx,cx
|
||
i1:
|
||
mov al,[edi]
|
||
cmp al,32 ;13
|
||
je i_exit
|
||
; cmp al,'0'
|
||
; jb err
|
||
; cmp al,'9'
|
||
; ja err
|
||
sub al,48
|
||
shl cx,1
|
||
jc err
|
||
mov bx,cx
|
||
shl cx,1
|
||
jc err
|
||
shl cx,1
|
||
jc err
|
||
add cx,bx
|
||
jc err
|
||
cbw
|
||
add cx,ax
|
||
jc err
|
||
i3:
|
||
inc edi
|
||
jmp i1
|
||
i_exit:
|
||
mov ax,cx
|
||
clc
|
||
i4:
|
||
movzx eax,ax
|
||
pop edi
|
||
pop dx
|
||
pop cx
|
||
pop bx
|
||
ret
|
||
|
||
err:
|
||
stc
|
||
jmp i4
|
||
|
||
partition_string: dd 0
|
||
db 32
|