kolibrios/kernel/branches/Kolibri-acpi/sec_loader/trunk/parse_def_sect.inc
Sergey Semyonov (Serge) 8f992ed021 acpi branch
git-svn-id: svn://kolibrios.org@1635 a494cfbc-eb01-0410-851d-a64ba20cac60
2010-10-01 09:21:55 +00:00

2094 lines
61 KiB
PHP

; Copyright (c) 2009, <Lrz>
; All rights reserved.
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions are met:
; * Redistributions of source code must retain the above copyright
; notice, this list of conditions and the following disclaimer.
; * Redistributions in binary form must reproduce the above copyright
; notice, this list of conditions and the following disclaimer in the
; documentation and/or other materials provided with the distribution.
; * Neither the name of the <organization> nor the
; names of its contributors may be used to endorse or promote products
; derived from this software without specific prior written permission.
;
; THIS SOFTWARE IS PROVIDED BY Alexey Teplov nickname <Lrz> ''AS IS'' AND ANY
; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
; DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;*****************************************************************************
; â ýòîé ñåêöèè èäåò ðàçáîð ïàðàìåòðîâ óêàçàòåëü íà ñåêöèþ õðàíèòüñÿ â point_default
;òèïû îøèáîê ïðè îáðàáîòêå ìàêðîñà
;Ìàêðîñ RamdiskFS
;/îïðåäåëåíèå ôëàãîâ â çàïèñè êîðíåâîé äèðåêòîðèè
ATTR_READ_ONLY equ 0x01
ATTR_HIDDEN equ 0x02
ATTR_SYSTEM equ 0x04
ATTR_VOLUME_ID equ 0x08
ATTR_DIRECTORY equ 0x10
ATTR_ARCHIVE equ 0x20
show_error_1 equ 0x1 ;êîí÷èëèñü äàííûå - íå çàïëàíèðîâàííûé êîíåö ñåêöèè
show_error_2 equ 0x2 ;íåò çàâåðøàþùåãî ñèìâîëà â ðàçìåðå ðàì äèñêà.
show_error_3 equ 0x4 ; ðàì äèñê áóäåò èìåòü ðàçìåð =64 êá.
show_error_4 equ 0x8 ;
macro use_parse_def_sect
{
mov di,point_default
push ini_data_
pop es
mov si,point_to_point_def
sub si,2
mov cx,[si] ;çàãðóçèì óêàçàòåëü íàñëåäóþùèþ ñåêöèþ
xor ax,ax ;îáíóëèì àx äëÿ î÷èñòêè ôëàãîâ
sub cx,di ;âîò òåïåðü èìååì èñòèíûé ðàçìåð
mov save_cx_d,cx ;ñîõðàíèì çíà÷åíèå cx ñâîåé ïåðåìåííîé
;îáíóëèì ïåðåìåííóþ ôëàãîâ, ýòî íåîáõîäèìî, äëÿ òîãî, ÷òî áû èçáåæàòü îáðàáîòêó ïîâòîðÿþùèõñÿ çíà÷åíèé
mov status_flag,ax
;;;;
;ÂÕîä â îáðàáîòêó ïàðñèíãà çíà÷åíèé ñåêöèé. es:di - óêàçàòåëü íà íà÷àëî ñåêöèè cx ðàçìåð ñåêöèè äîñòóïíîé äëÿ ïàðñèíãà
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;ñîãëàøåíèå íå ðàçðóøàåì bp, es, cs, sp
;use_Loader_Image ;çàãðóçèòü îáðàç âûøå 1 ìá
use_RamdiskFS
;ïðîâåðÿåòñÿ ñàìûé ïîñëåäíèé.
use_LoaderModule ;îñîáåííîñòü - ïåðåäàåò óïðàâëåíèå íà çàãðóæåííûé ìîäóëü.
}
macro use_LoaderModule
;êàê âàðèàíò ñåé÷àñ èñïîëüçóåòñÿ ìîäåëü, ïðè çàãðóçêå ìîäóëÿ íà íåãî ïåðåäàåòñÿ óïðàâëåíèå, ðåøåíèå âðåìåíîå
;óïðàâëåíèå áóäåò ïåðåäàâàòüñÿ òîëüêî ïîñëå îáðàáîòêè âñåé ñåêöèè
{
local .found_end_str
mov di,point_default ;restore value
mov cx,save_cx_d
;îáðàáîòêà êîíñòðóêöèè òèïà LoaderModule=kord/kolibri.ldm
.start_p_LM:
call get_firs_sym ;get first symbol on new line
test cx,cx
jz ._afterLoaderModule ;íåòó? íó ëàäíî - ñëåäóþùåå çíà÷åíèå òîãäà )
cmp al,'L'
jnz .start_p_LM
;ïðîâåðêà íà çíà÷åíèå LoaderModule
; parse_LoaderModule
mov bx,cx
mov ax,di
mov si,parse_LoaderModule
mov cx,parse_LoaderModule_e - parse_LoaderModule
repe cmpsb
jnz .rest_value_loop_LM ;is not compare
sub bx,parse_LoaderModule_e - parse_LoaderModule ;correct cx
add bx,cx
mov cx,bx
test status_flag,flag_found_LM ;îöåíêà ôëàãîâ
jz .correct_is_not_set_LM
; mov si,found_equal_timeout ;ìû íàøëè ÷òî ôëàã óæå óñòàíîâëåí, èíôîðìèðóåì
; call printplain
; jmp .get_next_str
.correct_is_not_set_LM:
mov ax,0x3d20 ;cut al=' ' ah='='
repe scasb
jcxz .rest_value_loop_LM ;not found param timeout
cmp ah,byte [es:di-1] ;find '='
jnz .rest_value_loop_LM
repe scasb ;cut ' '
inc cx
dec di
;di óêàçûâàåò íà íà÷àëî áëîêà èíôîðìàöèè, â cx äëèííà äî êîíöà ñåêöèè.
;ïîñëå çàãðóçêè çàíîñèòüñÿ çíà÷åíèå çàíÿòîé ïàìÿòè.
;äëÿ òîãî ÷òî áû çàãðóçèòü ìîäóëü, âîñïîëüçóåìñÿ callback ñåðâèñîì
;îðèãèíàëüíîå ðåøåíèå - ðàçìåñòèì dd ïåðåä ñòðî÷êîé è ïîñëå ñòðî÷êè ðàçìåñòèì byte =0
;ýòî âûãëÿäèò òàê: â ini ôàéëå ñóùåñòâóåò ñòðî÷êà LoaderModule = kord/kernel.loader
;ìû åå ìîäèôèöèðóåì äî òàêîãî ñîñòîÿíèÿ dw,dw,db'kord/kernel.loader',0 êîíå÷íî ñîõðàíèâ òå çíà÷åíèÿ êîòîðûå ìû çàìåíÿåì
;ñîõðàíèëè ïåâûå 2 word
push dword [es:di-6]
lea si,[di-6]
push word [es:di-2]
xor ax,ax
mov word [es:di-6],ax ;âíîñèì íóæíûå çíà÷åíèÿ
;info_real_mode_size ðàçìåð è óêàçàòåëü íà îáëàñòü â êîòîðóþ ìîæíî çàãðóçèòüñÿ
mov ax,info_real_mode_size ;0x3000 ;ñëåäóþùèé ñåãìåíò çà äàííûìè
mov word [es:di-4],ax
mov word [es:di-2],16 ;êîë-âî áëîêîâ ïî 4 êá =64 êá ò.å. áîëüøå íå ñ÷èòàåì
;;;;;; ïîèñê êîíöà ñòðî÷êè
@@: mov al,byte [es:di]
cmp al,' '
jz .found_end_str
cmp al,0xa
jz .found_end_str
cmp al,0xd
jz .found_end_str
inc di
dec cx
jnz @b
;;;not found äîïóñòèì,÷òî ýòî êîíåö ôàéëà è îí íå èìååò ïðèâû÷íîãî çàâåðåøíèÿ ñòðîêè
.found_end_str:
push word [es:di]
xor ax,ax
mov word [es:di],ax
; xor ax,ax ; function 1 - read file
mov di,si ;file_data
inc ax
push si
push es
push es
pop ds
push cs
pop es
call far dword [es:loader_callback]
push cs
pop ds
pop es
pop si
test bx,bx
jnz .error_LM
jmp far dword [es:si]
.error_LM:
call error.LoaderModule
.rest_value_loop_LM:
mov di,ax
mov cx,bx
jmp .start_p_LM
._afterLoaderModule:
}
macro use_RamdiskFS
; ôîðìèðîâàíèå ðàì äèñêà, + îáðàáîòêà âñåãî ñâÿçàííîãî.
{
if DEBUG
local ._not_memory_in_sys
;//////// clear window
mov ax,3
int 0x10
;\\\\\\\\\ clear window is end
mov si,ramdiskFS_st
call printplain
end if
; îáíóëèì ðåãèñòð ñîñòîÿíèÿ îøèáîê
xor ax,ax
mov show_errors_sect,ax
use_free_memory ; óçíàåì êàêîãî îáúåìà ó íàñ äîñòóïíà ïàìÿòü. çíà÷åíèå âîçàðàùàåòñÿ â ax
;óçíàåì ñêîëüêî ó íàñ åñòü ïàìÿòè è ñìîæåì ëè ìû ñôîðìèðîâàòü íóæíîãî ðàçìåðà ðàì äèñê.
use_RamdiskSize ;çíà÷åíèå âîçâðàùàåòñÿ â bx
cmp free_ad_memory,bx ; ðàçìåðíîñòü â êá.
jbe ._not_memory_in_sys
movzx eax,bx
shl eax,10 ;*1024 = get size in byte
mov save_ramdisksize,eax ; ñîðõàíèì ðàçìåð â byte
get_type_FS ;ïîëó÷èì òèï ôàéëîâîé ñèñòåìû + ñîçäàäèì åå
._not_memory_in_sys:
if DEBUG
;pause
xor ax,ax
int 0x16
end if
}
macro use_RamdiskSize
{
local .start_p_RS
local .correct_is_not_set_RS
local .CS
local .correct_val_RS
local .correct_size_RS
local .rest_value_loop_RS
local .end_get_RS_ERROR_1
local .end_get_RS_ERROR_2
local ._end_parse_RS
;îáðàáàòûâàåòñÿ ðàçìåð ôîðìèðóåìîãî ðàì äèñêà
;çàãðóçèì íà÷àëî ñåêöèè, ò.ê. áóäåì ïðîñìàòðèâàòü ñ íà÷àëà è âñþ ñåêöèþ
mov di,point_default ;restore value
mov cx,save_cx_d
.start_p_RS:
call get_firs_sym ;get first symbol on new line
test cx,cx
jz ._end_parse_RS ;íåòó? íó ëàäíî - ñëåäóþùåå çíà÷åíèå òîãäà )
cmp al,'R'
jnz .start_p_RS
;ïðîâåðêà íà çíà÷åíèÿ RamdiskSize
; parse_RamdiskSize
mov bx,cx
mov ax,di
mov si,parse_RamdiskSize
mov cx,parse_RamdiskSize_e - parse_RamdiskSize
repe cmpsb
jnz .rest_value_loop_RS ;is not compare
sub bx,parse_RamdiskSize_e - parse_RamdiskSize ;correct cx
add bx,cx
mov cx,bx
test status_flag,flag_found_RS ;îöåíêà ôëàãîâ
jz .correct_is_not_set_RS
; mov si,found_equal_timeout ;ìû íàøëè ÷òî ôëàã óæå óñòàíîâëåí, èíôîðìèðóåì
; call printplain
; jmp .get_next_str
.correct_is_not_set_RS:
mov ax,0x3d20 ;cut al=' ' ah='='
repe scasb
jcxz .end_get_RS_ERROR_1 ;not found param
cmp ah,byte [es:di-1] ;find '='
jnz .start_p_RS ; ïåðåéäåì íà íà÷àëî è ïîïðîáóåì íàéòè åùå ñåêöèþ
repe scasb ;cut ' '
inc cx
dec di
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;Òóò íóæíî ïðåîáðàçîâûâàòü ñòðî÷êó â öèôðîâîå çíà÷åíèå.
;;;;;;;;;;;;;;;;;;;;;;;;;;
xor bx,bx
mov cx,5
@@: mov al,byte [es:di]
cmp al,'0'
jb .CS
cmp al,'9'
jbe .correct_val_RS
.CS:
cmp al,'K'
jz .correct_size_RS
jmp .end_get_RS_ERROR_2
.correct_val_RS:
imul bx,10
xor al,0x30
add bl,al
inc di
loop @b
.correct_size_RS:
;âîçìîæåí 1 âàðèàíò, êîãäà ðàçìåð çàäàí â K êèëëîáàéòàõ
;âíóòðåííûé ôîðìàò äàííûõ ýòî êîë-âî çàïðîùåíîé ïàìÿòè â êá.
test bx,bx
jnz @f ;åñëè çíà÷åíèå îòëè÷íî îò 0
;;;;;ñîîáùåíèå îá îøèáêå, ðàçìåð "íàéäåíîãî" áëîêà =0 ìèíèìàëüíî ìû äîëæíû
;óñòàíîâèòü 64 êá ðàçìåð ðàì äèñêà.
or show_errors_sect,show_error_3
mov bx,64
@@:
jmp ._end_parse_RS
.rest_value_loop_RS:
mov di,ax
mov cx,bx
jmp .start_p_RS
.end_get_RS_ERROR_1:
;ñîîáùåíèå îá îøèáêå - äàííûé ó÷àñòîê êîäà íå áûë êîððåêòíî îáðàáîòàí :(
or show_errors_sect,show_error_1
jmp ._end_parse_RS
.end_get_RS_ERROR_2:
or show_errors_sect,show_error_2
._end_parse_RS:
if DEBUG
pusha
movzx eax,bx
mov cx,0x0a
mov di,RamdiskSize_msg
mov dword[ds:di],' '
mov word [ds:di+4],' '
call decode
;Show size
mov si,RamdiskSize_msg
call printplain
popa
end if
}
macro use_free_memory
{
local _support_function_use_free_memory
;ìàêðîñ äëÿ ïîëó÷åíèÿ îáùåãî ÷èñëà äîñòóïíîé ïàìÿòè â êá, äëÿ ôîðìèðîâàíèÿ ðàì äèñêà çà ïðåäåëàìè 1 ìá.
;èñïîëüçóåòñÿ 0õ88 ôóíêöèÿ 0õ15 ïðåðûâàíèÿ
; åñëè ïîääåðæèâàåòñÿ ôóíêöèÿ, òî â ax çíà÷åíèå â êá, åñëè íåò, òî â ax=0
mov ah,0x88 ;ah,0x88
int 0x15
jnc ._support_function_use_free_memory
xor ax,ax
;âîçâðàùàåò â ax ÷èñëî â êá
._support_function_use_free_memory:
mov free_ad_memory,ax ; åñëè íå ïîääåðæèâàåòñÿ áèîñîì, òî â ax=0
if DEBUG
pushad
movzx eax,ax
mov cx,0x0a
mov di,free_memory_msg
mov dword[ds:di],' '
mov word [ds:di+4],' '
call decode
;Show size
mov si,free_memory_msg
call printplain
popad
end if
}
macro show_ERRORS
{
}
macro get_type_FS ;ïîëó÷èòü è ñîçäàòü îáðàç äëÿ çàäàííîé RFS.
{
mov di,point_default ;restore value
mov cx,save_cx_d
.start_g_tpe_RFS:
call get_firs_sym ;get first symbol on new line
test cx,cx
jz ._end_parse_FRS ;._end_get_type_RFS ;íåòó? íó ëàäíî - ñëåäóþùåå çíà÷åíèå òîãäà )
cmp al,'R'
jnz .start_g_tpe_RFS
;ïðîâåðêà íà çíà÷åíèÿ RamdiskSize
; parse_RamdiskSize
mov bx,cx
mov ax,di
mov si,parse_RamdiskFS
mov cx,parse_RamdiskFS_e - parse_RamdiskFS
repe cmpsb
jnz .start_g_tpe_RFS_rest_v ;is not compare
sub bx,parse_RamdiskFS_e - parse_RamdiskFS ;correct cx
add bx,cx
mov cx,bx
test status_flag,flag_found_GTRFMS ;îöåíêà ôëàãîâ
jz .correct_is_not_set_FRS
; mov si,found_equal_timeout ;ìû íàøëè ÷òî ôëàã óæå óñòàíîâëåí, èíôîðìèðóåì
; call printplain
; jmp .get_next_str
.correct_is_not_set_FRS:
mov ax,0x3d20 ;cut al=' ' ah='='
repe scasb
test cx,cx
jz .end_get_FRS_ERROR_1 ;not found param
cmp ah,byte [es:di-1] ;find '='
jnz .start_g_tpe_RFS ; ïåðåéäåì íà íà÷àëî è ïîïðîáóåì íàéòè åùå ñåêöèþ
repe scasb ;cut ' '
inc cx
dec di
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;Òóò íóæíî ïðåîáðàçîâûâàòü ñòðî÷êó â öèôðîâîå çíà÷åíèå.
;;;;;;;;;;;;;;;;;;;;;;;;;;
mov bx,cx
mov ax,di
mov si,parse_RFS_FAT
mov cx,parse_RFS_FAT_e - parse_RFS_FAT
repe cmpsb
jnz .krfs_cmp ;is not compare
make_FAT_RamFS ;ñäåëàòü
if DEBUG
pusha
mov si,make_fat12_RFS_msg
call printplain
popa
end if
jmp ._end_parse_FRS
.krfs_cmp:
mov cx,bx
mov di,ax
mov si,parse_RFS_KRFS
mov cx,parse_RFS_KRFS_e - parse_RFS_KRFS
repe cmpsb
; jnz @f ;is not compare
jmp ._end_parse_FRS
.start_g_tpe_RFS_rest_v:
mov cx,bx
mov di,ax
jmp .start_g_tpe_RFS
.end_get_FRS_ERROR_1:
;ñîîáùåíèå îá îøèáêå - äàííûé ó÷àñòîê êîäà íå áûë êîððåêòíî îáðàáîòàí :(
or show_errors_sect,show_error_1
jmp ._end_parse_FRS
.end_get_FRS_ERROR_2:
or show_errors_sect,show_error_2
._end_parse_FRS:
if DEBUG
pusha
mov si,get_type_FS_msg
call printplain
popa
end if
}
macro make_FAT_RamFS
{
local .RS1
local .fat12
local .fat16
; ìû äîëæíû ñôîðìèðîâàòü â íà÷àëüíûé îáðàç Ram FS, à ïîòîì çàïèñàòü åãî çà îáëàñòü âûøå 1 ìá..
;äëÿ ñëó÷àÿ ñ FAT12
; mov di,fat12_buffer ;ds äîëæåí áûòü = cs
;es:di - óêàçûâàþò íà íà÷àëî áëîêà äëÿ ôîðìèðîâàíèÿ ðàì ôñ.
use_RamdiskSector ;âîçðàùàåìîå çíà÷åíèå â ax ðàçìåð ñåêòîðà â áàéòàõ
cmp ax,4096 ;ïî ñïåöèôèêàöèè çíà÷åíèå äîëæíî áûòü â ïðåäåëàõ îò 1 äî 4096
ja .RS1
test ax,ax
jnz @f ;îøèáêà åñëè ñþäà ïðûãíóëè âñå òàêè ...
.RS1: mov word [fat12_buffer.BPB_BytsPerSec],512
;;;;;;;;;;ñêàæåì ÷òî ïî äåôîëòó áóäåì þçàòü çíà÷åíèå...
@@: mov word [fat12_buffer.BPB_BytsPerSec],ax ;òóò âñå îê
;BPB_SecPerClus êîë-âî ñåêòîðîâ â êëàñòåðå
use_RamdiskCluster ;âîçðàùàåìîå çíà÷åíèå â al
cmp al,128
ja @f
; test al,0x1 ;ïðîâåðêà íà êðàòíîñòü )
; jnz @f
mov byte [fat12_buffer.BPB_SecPerClus],al
;incorrect value will be set dafault
;íèæå íåêîððåêòíîå çíà÷åíèå â ò.ê. ðàçìåð êðàòåí 2 è â äèàïàçîíå îò 1 äî 128 âêëþ÷èòåëüíî
; ìû äîëæíû ðóãíóòüñÿ íà ýòî
;@@: ;mov byte [fat12_buffer.BPB_SecPerClus],1
;;;;; îïðåäåëåèì êàêàÿ ó íàñ áóäåò èñïîëüçîâàòüñÿ FAT
;ïî óñëîâèþ, fat12<4085<=fat16<65525<=fat32
; fat12_buffer.BPB_BytsPerSec*fat12_buffer.BPB_SecPerClus = êîë-âî ñåêòîðîâ
movzx eax,word [fat12_buffer.BPB_BytsPerSec]
movzx ebx,byte [fat12_buffer.BPB_SecPerClus]
imul ebx,eax ;òóò ðàçìåðíîñòü ñåêòîðà
mov eax,save_ramdisksize ;ðàçìåð çàïðîøåííîãî ðàì äèñêà â áàéòàõ
cdq
idiv ebx
;;;;;;;; ñåé÷àñ ÷àñòíîå â eax, à îñòàòîê â edx
;ïîëó÷èì êîë-âî ñåêòîðîâ, è ìîæåì óæå îïðåäåëèòü òèï FAT êîòîðóþ íóæíî äåëàòü.
cmp eax,4085
jb .fat12
cmp eax,65525
jb .fat16
;;;;;;;;;;;;;;;;;;;;;;;; òóò fat32
mov set_ramfs,32 ;óñòàíîâèì òèï ôàéëîâîé ñèñòåìû
mov word [fat12_buffer.BPB_RsvdSecCnt],32
xor eax,eax
mov word [fat12_buffer.BPB_RootEntCnt],ax
mov word [fat12_buffer.BPB_TotSec16],ax
mov dword [fat12_buffer.BPB_TotSec32],eax
.fat16: ;fat16
;Äëÿ FAT12 è FAT16 äèñêîâ ýòî ïîëå ñîäåðæèò êîëè÷åñòâî ñåêòîðîâ, à BPB_TotSec32 ðàâíî 0, åñëè çíà÷åíèå <óìåùàåòñÿ> (ìåíüøå 0x10000).
jmp $
mov set_ramfs,16 ;óñòàíîâèì òèï ôàéëîâîé ñèñòåìû
movzx ebx,byte [fat12_buffer.BPB_SecPerClus]
imul eax,ebx
cmp eax,0x10000
jae @f
mov word [fat12_buffer.BPB_TotSec16],ax
mov dword [fat12_buffer.BPB_TotSec32],0
@@:
;êîëè÷åñòâî ñåêòîðîâ çàíèìàåìîå îäíîé êîïèåé ôàò
; mov word [fat12_buffer.BPB_FATSz16],0x9 ;Äëÿ FAT12/FAT16 ýòî êîëè÷åñòâî ñåêòîðîâ îäíîé FAT. ??
;;;; çàïîëíèì BPB_RootEntCnt Äëÿ FAT12 è FAT16 äèñêîâ, ýòî ïîëå ñîäåðæèò ÷èñëî
;32-áàéòíûõ ýëåìåíòîâ êîðíåâîé äèðåêòîðèè. Äëÿ FAT32 äèñêîâ, ýòî ïîëå äîëæíî
;áûòü 0. Ïîêà êîíñòàíòà, íóæíî áóäåò ïîçæå äîäåëàòü.
mov eax,root_dir_entry_count
mov word [fat12_buffer.BPB_RootEntCnt],ax ; count of 32-byte dir. entries (224*32 = 14 sectors= 7 kb)
;ïî äîêóìåíòàöèè ðåêîìåíäóþò îòðåçàòü 16 êá äëÿ ðóò äèð íî ýòî î÷ ìíîãî, äàæå äëÿ êîîñ. èìõî äëÿ íà÷àëà õâàòèò è 7 êá
;;;;;;;
;Äëÿ FAT16 ýòî êîëè÷åñòâî ñåêòîðîâ îäíîé FAT. Äëÿ FAT32 ýòî çíà÷åíèå
;ðàâíî 0, à êîëè÷åñòâî ñåêòîðîâ îäíîé FAT ñîäåðæèòñÿ â BPB_FATSz32.
;RootDirSectors = ((BPB_RootEntCnt * 32) + (BPB_BytsPerSec - 1)) / BPB_BytsPerSec;
;TmpVal1 = DskSize - (BPB_ResvdSecCnt + RootDirSectors);
;TmpVal2 = (256 * BPB_SecPerClus) + BPB_NumFATs;
;If(FATType == FAT32)
; TmpVal2 = TmpVal2 / 2;
;FATSz = (TMPVal1 + (TmpVal2 - 1)) / TmpVal2;
;If(FATType == FAT32) {
; BPB_FATSz16 = 0;
; BPB_FATSz32 = FATSz;
;} else {
; BPB_FATSz16 = LOWORD(FATSz);
; /* there is no BPB_FATSz32 in a FAT16 BPB */
;}
;=====================================
;RootDirSectors
movzx ebx, word [fat12_buffer.BPB_BytsPerSec]
imul eax,32
add eax,ebx
dec eax
cdq
idiv ebx
;;;;;;;; ñåé÷àñ ÷àñòíîå â eax, à îñòàòîê â edx äëÿ äèñêåòû 1.44 ó íàñ äîëæíî áûòü çíà÷åíèå =14
;BPB_ResvdSecCnt + RootDirSectors
movzx ebx, word [fat12_buffer.BPB_RsvdSecCnt]
add ebx,eax
;DskSize ó íàñ ýòî çíà÷åíèå óæå ïîëó÷åíî è äîñòóïíî
movzx eax,word [fat12_buffer.BPB_TotSec16] ;äîëæåí áûòü â ñåêòîðàõ
sub eax,ebx
;TmpVal1=eax
shl edi,8 ;=edi*256
movzx ecx,byte [fat12_buffer.BPB_NumFATs]
add edi,ecx
;TmpVal2=edi
add eax,edi
dec eax
cdq
idiv edi
;FATSz = ñåé÷àñ ÷àñòíîå â eax, à îñòàòîê â edx
mov word [fat12_buffer.BPB_FATSz16],ax
.fat12: ;fat12
if DEBUG
; âûâåäåì â îòëàäêå, ÷òî ñîáèðàåìñÿ äåëàòü îáðàç äèñêà c FS=fat12
pushad
mov si,start_making_FAT12_msg
call printplain
popad
end if
;Äëÿ FAT12 è FAT16 äèñêîâ ýòî ïîëå ñîäåðæèò êîëè÷åñòâî ñåêòîðîâ, à BPB_TotSec32 ðàâíî 0, åñëè çíà÷åíèå <óìåùàåòñÿ> (ìåíüøå 0x10000).
mov set_ramfs,12 ;óñòàíîâèì òèï ôàéëîâîé ñèñòåìû
movzx ebx,byte [fat12_buffer.BPB_SecPerClus]
imul eax,ebx
cmp eax,0x10000
jae @f
mov word [fat12_buffer.BPB_TotSec16],ax
mov dword [fat12_buffer.BPB_TotSec32],0
@@:
;êîëè÷åñòâî ñåêòîðîâ çàíèìàåìîå îäíîé êîïèåé ôàò
; mov word [fat12_buffer.BPB_FATSz16],0x9 ;Äëÿ FAT12/FAT16 ýòî êîëè÷åñòâî ñåêòîðîâ îäíîé FAT. ??
;;;; çàïîëíèì BPB_RootEntCnt Äëÿ FAT12 è FAT16 äèñêîâ, ýòî ïîëå ñîäåðæèò ÷èñëî
;32-áàéòíûõ ýëåìåíòîâ êîðíåâîé äèðåêòîðèè. Äëÿ FAT32 äèñêîâ, ýòî ïîëå äîëæíî
;áûòü 0. Ïîêà êîíñòàíòà, íóæíî áóäåò ïîçæå äîäåëàòü.
mov eax,root_dir_entry_count
mov word [fat12_buffer.BPB_RootEntCnt],ax ; count of 32-byte dir. entries (224*32 = 14 sectors= 7 kb)
;ïî äîêóìåíòàöèè ðåêîìåíäóþò îòðåçàòü 16 êá äëÿ ðóò äèð íî ýòî î÷ ìíîãî, äàæå äëÿ êîîñ. èìõî äëÿ íà÷àëà õâàòèò è 7 êá
;;;;;;;
;DskSize(â ñåêòîðàõ)*12 (ðàçìåðíîñòü ôàéëîâîé ñèñòåìû, ò.å ïðåäïîëîæèì ñêîëüêî áèòîâ ïîòðåáóåòñÿ äëÿ àäðåñàöèè ýòîãî îáúåìà) /8 (÷òî ïîëó÷èòü ðàçìåð â áàéòàõ)
;ïîëó÷åííîå ÷èñëî îêðóãëÿåì â áîëüøóþ ñòîðîíó êðàòíîå ñåêòîðó ò.å. 512 áàéò Òàêîé ïîäõîä íå óíèâåðñàëåí, íî ïîêà ïîéäåò
;âîîáùå ó ìåëêîñîôò ýòî âñå ñ÷èòàåòñÿ ðó÷êàìè, íî ìû áóäåì þçàòü òîëüêî ïîä êîîñ ðàì äèñê ñ ôàò12
movzx eax, word [fat12_buffer.BPB_TotSec16]
imul eax,12
shr eax,3 ;äåëèì íà 8 íî ò.å. íàì íóæíî äåëèòü åùå è íà 512 èëè áîëåå â çàâèñèìîñòè îò ðàçìåðîâ êëàñòåðà
movzx ebx,word [fat12_buffer.BPB_BytsPerSec] ;ðàçìåð ñåêòîðà
cdq
idiv ebx ;ðàçäåëèì íà ðàçìåð êëàñòåðà
;ñåé÷àñ ó íàñ â eax çíà÷åíèå åãî íóæíî îêðóãëèòü â áîëüøóþ ñòîðîíó êðàòíîìó 512 áàéòàì
;ïðèìåíèì ñëåäóþùåå î÷èñòèì and è äîáàâèì 512 áàéò. òàêèì îáðàçîì âûðàâíèì íà 512 áàéò
;íî ò.ê. âñå ðàâíî äåëèòü íèæíèé êîä íàì íå íóæåí
; and eax,0xfff200
; add eax,0x200 ;äîáàâèì 512 áàéò äëÿ 1.44 äèñêåòû èäåàëüíî ïîäõîäèò ))
inc ax
;ïî èäåå äîëæíî íà êàæäóþ ôàò òàáëèöó
;ðåçåðâèðîâàòüñÿ 9 ñåêòîðîâ ò.å. ïîëó÷àåòñÿ 2*9=18+1 =19 ñåêòîðîâ ò.å. ðóò äèð íàõîäèòüñÿ íà ñ 20 ñåòîðà ò.å. ñ àäðåñà 0õ2600
;ñåé÷àñ íóæíî âû÷èñëèòü ñêîëüêî áóäåò ñåêòîðîâ çàíèìàòü ôàò ) íóæíî ðàçäåëèòü íà 512
;FATSz = ñåé÷àñ ÷àñòíîå â eax
mov word [fat12_buffer.BPB_FATSz16],ax
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
get_firstDataSector ;ïîëó÷èòü ñìåùåíèå äî äàííûõ
;ñîçäàäèì ïåâóþ çàïèñü â ôàò ïî îïðåäåëåííîìó àäðåñó.
first_create_fat_table
;çàêèíèì BPB ôàéëîâîé ñèñòåìû çà 1 ìá.
use_BPB_RAM
;
;êîïèðîâàíèå ôàéëà.
use_RamdiskFile
;;;; âû÷èñëÿåì óêàçàòåëü íà êîðíåâóþ äèð FirstRootDirSecNum = BPB_ResvdSecCnt + (BPB_NumFATs * BPB_FATSz16);
; movzx ebx, [fat12_buffer.BPB_NumFATs]
; movzx eax,ax
; imul eax,ebx
;eax=(BPB_NumFATs * BPB_FATSz16)
; inc eax
; BPB_ResvdSecCnt çíà÷åíèå òîëüêî 1 äëÿ fat12/16
;â eax óêàçàòåëü íà root dir. äëÿ äèñêåòû fat12 äîëæíî ïîëó÷èòüñÿ ïðè êîë-âî êîïèé fat 1 = 1+ (1*1) =2 èëè 3
if DEBUG
pusha
; mov ax,point_default
; mov ax,cx
mov cx,0x0a
mov di,show_db1
; mov dword[ds:di],' '
; mov word [ds:di+4],' '
call decode
;Show size
mov si,show_db1
call printplain
;
; xor ax,ax
; int 0x16
popa
end if
}
macro use_RamdiskSector
{
;äëÿ íåêîòîðûõ FS áóäåò èãíîðèðîâàòüñÿ
mov di,point_default ;restore value
mov cx,save_cx_d
.start_RamdiskSector:
call get_firs_sym ;get first symbol on new line
test cx,cx
jz .end_RamdiskSector ;íåòó? íó ëàäíî - ñëåäóþùåå çíà÷åíèå òîãäà )
cmp al,'R'
jnz .start_RamdiskSector
;ïðîâåðêà íà çíà÷åíèÿ RamdiskSize
; parse_RamdiskSize
mov bx,cx
mov ax,di
mov si,parse_RamdiskSector
mov cx,parse_RamdiskSector_e - parse_RamdiskSector
repe cmpsb
jnz .RamdiskSector_rest_val ;is not compare
sub bx,parse_RamdiskSector_e - parse_RamdiskSector ;correct cx
add bx,cx
mov cx,bx
test status_flag,flag_found_RamdiskSector ;îöåíêà ôëàãîâ
jz .correct_is_not_set_RamdiskSector
; mov si,found_equal_timeout ;ìû íàøëè ÷òî ôëàã óæå óñòàíîâëåí, èíôîðìèðóåì
; call printplain
; jmp .get_next_str
.correct_is_not_set_RamdiskSector:
mov ax,0x3d20 ;cut al=' ' ah='='
repe scasb
jcxz .end_get_RamS_ERROR_1 ;not found param
cmp ah,byte [es:di-1] ;find '='
jnz .start_RamdiskSector ; ïåðåéäåì íà íà÷àëî è ïîïðîáóåì íàéòè åùå ñåêöèþ
repe scasb ;cut ' '
inc cx
dec di
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
xor bx,bx
mov cx,4
@@: movzx ax,byte [es:di]
cmp al,'0'
jb .end_RamdiskSector
cmp al,'9'
ja .end_RamdiskSector
;;;;;;;;;;;;;;;;;;;
imul bx,10
xor al,0x30
add bx,ax
inc di
loop @b
jmp .end_RamdiskSector
.RamdiskSector_rest_val:
mov cx,bx
mov di,ax
jmp .start_RamdiskSector
.end_get_RamS_ERROR_1:
.end_RamdiskSector:
mov ax,bx
if DEBUG
pusha
movzx eax,bx;save_cx_d;point_default
mov cx,0x0a
mov di,RamdiskSector_msg
mov dword[ds:di],' '
mov dword [ds:di+4],' '
call decode
;Show size
mov si,RamdiskSector_msg
call printplain
popa
end if
; pop di
; pop es
}
macro use_RamdiskCluster
{
;äëÿ íåêîòîðûõ FS áóäåò èãíîðèðîâàòüñÿ
; push es
; push di
mov di,point_default ;restore value
mov cx,save_cx_d
; push ini_data_
; pop es
.start_RamdiskCluster:
call get_firs_sym ;get first symbol on new line
test cx,cx
jz .end_RamdiskCluster ;íåòó? íó ëàäíî - ñëåäóþùåå çíà÷åíèå òîãäà )
cmp al,'R'
jnz .start_RamdiskCluster
;ïðîâåðêà íà çíà÷åíèÿ RamdiskSize
; parse_RamdiskSize
mov bx,cx
mov ax,di
mov si,parse_RamdiskCluster
mov cx,parse_RamdiskCluster_e - parse_RamdiskCluster
repe cmpsb
jnz .RamdiskCluster_rest_val ;is not compare
sub bx,parse_RamdiskCluster_e - parse_RamdiskCluster ;correct cx
add bx,cx
mov cx,bx
test status_flag,flag_found_RamdiskCluster ;îöåíêà ôëàãîâ
jz .correct_is_not_set_RamdiskCluster
; mov si,found_equal_timeout ;ìû íàøëè ÷òî ôëàã óæå óñòàíîâëåí, èíôîðìèðóåì
; call printplain
; jmp .get_next_str
.correct_is_not_set_RamdiskCluster:
mov ax,0x3d20 ;cut al=' ' ah='='
repe scasb
jcxz .end_get_RamSC_ERROR_1 ;not found param
cmp ah,byte [es:di-1] ;find '='
jnz .start_RamdiskCluster ; ïåðåéäåì íà íà÷àëî è ïîïðîáóåì íàéòè åùå ñåêöèþ
repe scasb ;cut ' '
inc cx
dec di
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@@: movzx ax,byte [es:di]
cmp al,'0'
jb .end_RamdiskCluster
cmp al,'9'
ja .end_RamdiskCluster
;;;;;;;;;;;;;;;;;;;
xor al,0x30
jmp .end_RamdiskCluster
.RamdiskCluster_rest_val:
mov cx,bx
mov di,ax
jmp .start_RamdiskCluster
.end_get_RamSC_ERROR_1:
.end_RamdiskCluster:
if DEBUG
pusha
mov cx,0x0a
mov di,RamdiskCluster_msg
; mov word[ds:di],' '
call decode
;Show size
mov si,RamdiskCluster_msg
call printplain
popa
end if
}
macro use_Loader_Image
;ïðåäíàçíà÷åí äëÿ çàãðóçêè îáðàçîâ âûøå 1 Ìá.
;ïåðâîíà÷àëüíàÿ âåðñèÿ çàãðóæàåò îáðàç äèñêåòû 1.44 ìá
{
local .start_p_LI
local .exit
local .error_LI
local .rest_value_loop
local .found_end_str
mov di,point_default ;restore value
mov cx,save_cx_d
;îáðàáîòêà êîíñòðóêöèè òèïà LoaderModule=kord/kolibri.ldm
.start_p_LI:
call get_firs_sym ;get first symbol on new line
test cx,cx
jz .exit ;íåòó? íó ëàäíî - ñëåäóþùåå çíà÷åíèå òîãäà )
cmp al,'L'
jnz .start_p_LI
;ïðîâåðêà íà çíà÷åíèå LoaderModule
; parse_LoaderModule
mov bx,cx
mov ax,di
mov si,parse_LoaderImage
mov cx,parse_LoaderImage_e - parse_LoaderImage
repe cmpsb
jnz .rest_value_loop ;is not compare
sub bx,parse_LoaderImage_e - parse_LoaderImage ;correct cx
add bx,cx
mov cx,bx
; test status_flag,flag_found_LM ;îöåíêà ôëàãîâ
; jz .correct_is_not_set_LI
; mov si,found_equal_timeout ;ìû íàøëè ÷òî ôëàã óæå óñòàíîâëåí, èíôîðìèðóåì
; call printplain
; jmp .get_next_str
;.correct_is_not_set_LI:
mov ax,0x3d20 ;cut al=' ' ah='='
repe scasb
jcxz .rest_value_loop_LI ;not found param timeout
cmp ah,byte [es:di-1] ;find '='
jnz .rest_value_loop_LI
repe scasb ;cut ' '
inc cx
dec di
;di óêàçûâàåò íà íà÷àëî áëîêà èíôîðìàöèè, â cx äëèííà äî êîíöà ñåêöèè.
;ïîñëå çàãðóçêè çàíîñèòüñÿ çíà÷åíèå çàíÿòîé ïàìÿòè.
;äëÿ òîãî ÷òî áû çàãðóçèòü ìîäóëü, âîñïîëüçóåìñÿ callback ñåðâèñîì
;îðèãèíàëüíîå ðåøåíèå - ðàçìåñòèì dd ïåðåä ñòðî÷êîé è ïîñëå ñòðî÷êè ðàçìåñòèì byte =0
;ýòî âûãëÿäèò òàê: â ini ôàéëå ñóùåñòâóåò ñòðî÷êà LoaderModule = kord/kernel.loader
;ìû åå ìîäèôèöèðóåì äî òàêîãî ñîñòîÿíèÿ dw,dw,db'kord/kernel.loader',0 êîíå÷íî ñîõðàíèâ òå çíà÷åíèÿ êîòîðûå ìû çàìåíÿåì
;ñîõðàíèëè ïåâûå 2 word
push dword [es:di-6]
lea si,[di-6]
push word [es:di-2]
xor ax,ax
mov word [es:di-6],ax ;âíîñèì íóæíûå çíà÷åíèÿ
;info_real_mode_size ðàçìåð è óêàçàòåëü íà îáëàñòü â êîòîðóþ ìîæíî çàãðóçèòüñÿ
mov ax,info_real_mode_size ;0x3000 ;ñëåäóþùèé ñåãìåíò çà äàííûìè
mov word [es:di-4],ax
mov word [es:di-2],16 ;êîë-âî áëîêîâ ïî 4 êá =64 êá ò.å. áîëüøå íå ñ÷èòàåì
;;;;;; ïîèñê êîíöà ñòðî÷êè
@@: mov al,byte [es:di]
cmp al,' '
jz .found_end_str
cmp al,0xa
jz .found_end_str
cmp al,0xd
jz .found_end_str
inc di
dec cx
jnz @b
;;;not found äîïóñòèì,÷òî ýòî êîíåö ôàéëà è îí íå èìååò ïðèâû÷íîãî çàâåðåøíèÿ ñòðîêè
.found_end_str:
; ÷òåíèå áëîêà ïî 64 êá â ñåãìåíò è çàáðàñûâàíèå åãî âûøå 1 ìá.
push word [es:di]
xor ax,ax
mov word [es:di],ax
; xor ax,ax ; function 1 - read file
mov di,si ;file_data
inc ax
push si
push es
call far dword [loader_callback]
push cs
pop ds
pop es
pop si
test bx,bx
jnz .error_LM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; çàáðàñûâàíèå áëîêà â 64 êá âûøå 1 ìá.
mov si,table_15_87
push es
push ds
pop es
mov cx, 256*18
mov ah, 0x87
int 0x15
pop es
pop dx cx
test ah, ah
jmp far dword [es:si]
.rest_value_loop:
mov di,ax
mov cx,bx
jmp .start_p_LI
.exit:
}
macro name_in_root_fat
;ìàêðîñ, êîòîðûé çàïèñûâàåò èíôîðìàöèþ î çàãðóæåííîì ôàéëå â êîðíåâóþ ôàò òàáëèöó
{
}
macro use_RamdiskFile
{
;çàãðóçêà ôàéëîâ ñ èñïîëüçîâàíèå callback ñåðâèñà ïåðâè÷íîãî çàãðóç÷èêà
;èñïîëüçóåòñÿ òîëüêî äëÿ çàãðóçêè íåîáõîäèìûõ è íåáîëüøèõ ôàéëîâ, ò.ê. äîñòàòî÷íî ìåäëåííî ðàáîòàåò
;äëÿ çàãðóçêè èñïîëüçóåò 0õ87 ôóíêöèþ int 0x15 ïðåðûâàíèÿ - çàãðóçêà áëîêîâ äàííûõ äî 64 êá âûøå 1 ìá
local .start_loop
local ._end
local .rest_value_loop
local .error
mov di,point_default ;restore value
mov cx,save_cx_d
mov data_offset,0 ;clean offset
;îáðàáîòêà êîíñòðóêöèè òèïà LoaderModule=kord/kolibri.ldm
.start_loop:
call get_firs_sym ;get first symbol on new line
test cx,cx
jz ._end ;íåòó? íó ëàäíî - ñëåäóþùåå çíà÷åíèå òîãäà )
cmp al,'R'
jnz .start_loop
;ïðîâåðêà íà çíà÷åíèå RamdiskFile
mov bx,cx
mov ax,di
mov si,parse_RamdiskFile
mov cx,parse_RamdiskFile_e - parse_RamdiskFile
repe cmpsb
jnz .rest_value_loop ;is not compare
sub bx,parse_RamdiskFile_e - parse_RamdiskFile ;correct cx
add bx,cx
mov cx,bx
; test status_flag,flag_found_LM ;îöåíêà ôëàãîâ
; jz .correct_is_not_set_LM
; mov si,found_equal_timeout ;ìû íàøëè ÷òî ôëàã óæå óñòàíîâëåí, èíôîðìèðóåì
; call printplain
; jmp .get_next_str
;.correct_is_not_set_LM:
mov ax,0x3d20 ;cut al=' ' ah='='
repe scasb
test ecx,ecx
jz .rest_value_loop ;not found param timeout
cmp ah,byte [es:di-1] ;find '='
jnz .rest_value_loop
repe scasb ;cut ' '
inc cx
dec di
mov save_di_RAMDISK,di
mov save_cx_RAMDISK,cx
;di óêàçûâàåò íà íà÷àëî áëîêà èíôîðìàöèè, â cx äëèííà äî êîíöà ñåêöèè.
;ïîñëå çàãðóçêè çàíîñèòüñÿ çíà÷åíèå çàíÿòîé ïàìÿòè.
;äëÿ òîãî ÷òî áû çàãðóçèòü ìîäóëü, âîñïîëüçóåìñÿ callback ñåðâèñîì
;îðèãèíàëüíîå ðåøåíèå - ðàçìåñòèì dd ïåðåä ñòðî÷êîé è ïîñëå ñòðî÷êè ðàçìåñòèì byte =0
;ýòî âûãëÿäèò òàê: â ini ôàéëå ñóùåñòâóåò ñòðî÷êà RamdiskFile = @menu,@menu
;ìû åå ìîäèôèöèðóåì äî òàêîãî ñîñòîÿíèÿ dw,dw,db'@menu',0 êîíå÷íî ñîõðàíèâ òå çíà÷åíèÿ êîòîðûå ìû çàìåíÿåì
;ñîõðàíèëè ïåâûå 2 word
;
@@: mov al,byte [es:di]
cmp al,',' ; ò.å. èùåì ðàçäåëèòåëü
jz .found_end_str
inc di
dec cx
jnz @b
;;;not found äîïóñòèì,÷òî ýòî êîíåö ôàéëà è îí íå èìååò ïðèâû÷íîãî çàâåðøåíèÿ ñòðîêè
.found_end_str:
; mov al,byte [es:di]
; cmp al,' ' ; óáèðàåì ïðîáåëû, åñëè îíè åñòü
; jnz @f
; inc di
; dec cx
; jnz .found_end_str
;@@:
mov point_to_dest_file_name,di
inc di
;ïðîâåðêà èíäèâèäóàëüíîñòè èìåíè ôàéëà
check_name_file
;/restore di - point and cx -size section
mov di,save_di_RAMDISK
mov cx,save_cx_RAMDISK
test al,al
jnz .start_loop ;åñëè â al çíà÷åíèå íå =0, òî òàêîå èìÿ óæå ñóùåñòâóåò â ñèñòåìå.
push dword [es:di-6]
lea si,[di-6]
push word [es:di-2]
push di
xor ax,ax
mov word [es:di-6],ax ;âíîñèì íóæíûå çíà÷åíèÿ
;info_real_mode_size ðàçìåð è óêàçàòåëü íà îáëàñòü â êîòîðóþ ìîæíî çàãðóçèòüñÿ
mov ax,info_real_mode_size ;0x3000 ;ñëåäóþùèé ñåãìåíò çà äàííûìè
mov word [es:di-4],ax
mov word [es:di-2],16 ;êîë-âî áëîêîâ ïî 4 êá =64 êá ò.å. áîëüøå íå ÷èòàåì
mov di,point_to_dest_file_name
if DEBUG
pushad
; mov ax,di
mov cx,0x0a
mov di,name_of_seg_get_64
mov dword[ds:di],' '
mov word[ds:di+4],' '
call decode
;Show size
mov si,name_of_seg_get_64
call printplain
popad
end if
push word [es:di]
push cx
xor ax,ax
mov word [es:di],ax
; xor ax,ax ; function 1 - read file
push di
mov di,si ;file_data
inc ax
push si
push es
push bp
push es
pop ds
push cs
pop es
call far dword [es:loader_callback]
push cs
pop ds
pop bp
pop es
pop si
cmp bx,2
ja .error
; ñåé÷àñ ó íàñ â dx:ax ðàçìåð ôàéëà, êîòîðûé ìû çàãðóçèëè.
; âîçìîæíà ñèòóàöèÿ, êîãäà â bx=1 ò.å. åñòü åùå äàííûå íà äèñêå
mov status_flag_loader_f,bx
shl edx,16
mov dx,ax
; shr edx,10 ;ðàçìåð ôàéëà â êá.
;;â edx ðàçìåð â áàéòàõ.
mov save_file_size,edx
mov eax,edx
;âîññòàíîâèì ïîëíîñòüþ ôàéë ñöåíàðèÿ
pop di
pop cx ;äëèííà îñòàòêà ñ 2-îé ÷àñòüþ èìåíè ò.å. ñ èìåíåì íàçíà÷åíèåì.
pop word [es:di]
pop di
pop word [es:di-2]
pop dword [es:di-6]
if DEBUG
pushad
mov cx,0x0a
mov di,RamdiskFile_msg
mov dword[ds:di],' '
call decode
;Show size
mov si,RamdiskFile_msg
call printplain
popad
end if
; çàãðóçèì ÷åìó ó íàñ ðàâåí êëàñòåð
; mov ax,word [fat12_buffer.BPB_BytsPerSec] ;êîë-âî áàéòîâ â ñåêòîðå ìîæåò áûòü ëþáîå 512 1024 2048 4096 2 áàéòà
; movzx bx,byte [fat12_buffer.BPB_SecPerClus] ;êîë-âî ñåêòîðîâ â êëàñòåðå
; imul ax,bx
;ñåé÷àñ â eax ðàçìåð êëàñòåðà (512) áàéò
;â edx äëèíà ôàéëà â áàéòàõ äî 64 êá
;çàêèíèì ôàéë çà 1 ìá
;1 íàì íóæíî ñîñòàâèòü ôàò òàáëèöó ò.å. ïðîèçâåñòè ðàçìåòêó ðàìäèñêà, çàòåì ïåðåíåñåì ïî àäðåñó ôàéë
;çàïèñàòü èíôîðàìàöèþ î ôàéëå â êîðíåâóþ äèðåêòîðèþ
register_file_in_fat
;ïåðåíåñòè çà 1 ìá ñîäåðæèìîå ôàéëà
move_file_up
;ïðîâåðèì, çàãðóæåí ëè äî êîíöà ôàéë? ò.å. åñëè ðàçìåð ôàéëà áîëüøå ÷åì 64 êá, òî áóäåò ïîäãðóæàòü îñòàâøèåñÿ áëîêè
cmp status_flag_loader_f,0x1
jnz @f
;íóæíî äîçàãóçèòü äàííûå ôàéëà è ïåðåíåñòè èõ çà 1-ûé ìá ñîãëàñíî ôàò ñòðóêòóðå
@@:
;òóò îðãàíèçîâàí öèêë ïî çàãðóçêå ôàéëîâ â êîðíåâóþ äèðåêòîðèþ
mov di,save_di_RAMDISK
mov cx,save_cx_RAMDISK
if DEBUG
pusha
xor ax,ax
int 0x16
popa
end if
jmp .start_loop
.error:
;call error.LoaderModule
;fixme!
.rest_value_loop:
mov di,ax
mov cx,bx
jmp .start_loop
._end:
;ïåðåíåñåì çà 1-ûé ìá ôàò è ðóò äèð
move_up_fat_and_root_d
;çàãðóçêà áëîêà
; mov ah,0x87
; mov cx, ;size in byte
;es:si point to descripts
}
macro use_BPB_RAM ;çàêèíóòü ñàìûå ïåðâûå 512 áàéò çà 1-é ìá
;äàííûé ìàêðîñ çàêèäûâàåò BPB ñòðóêòóðó ò.å. ïåðâûå 512 áàéò, ïîêà òîëüêî ôàò12 çà 1 ìá
{
mov ax,fat12_buffer
mov si,table_15_87
add word [si+8*2+2],ax
push es
push ds
pop es
mov cx,256 ;áóò ñåêòîð óêëàäûâàåòñÿ â 512 áàéò 512/2=256
mov ah, 0x87
int 0x15
pop es
;add 512 byte for destination adress
; add dword [si+8*3+2], 512
; test ah, ah
; jz
if DEBUG
pusha
mov ax,word [si+8*2+2]
mov cx,0x0a
mov di,BPB_msg
call decode
;Show size
mov si,BPB_msg
call printplain
popa
end if
}
macro first_create_fat_table
;äàííûé ìàêðîñ ñîçäàåò îôîðìëÿåò 3 ïåðâûõ áàéòà fat òàáëèöû, è óñòàíàâëèâàåò óêàçàòåëü íà ñëåäóþùèé áëîê, è âíîñèò 0 çíà÷åíèå
;äëÿ ñìåùåíèÿ â êîðíåâîé òàáëèöå.
{
mov al,byte [fat12_buffer.BPB_Media]
push ds
mov di,info_real_mode_size
add di,0x1000
if DEBUG
pushad
mov ax,info_real_mode_size
add ax,0x1000
; mov ax,ds
mov cx,0xa
mov di,first_entry_in_fat
mov dword [di],' '
mov word [di+4],' '
call decode
;Show size
mov si,first_entry_in_fat
call printplain
xor ax,ax
int 0x16
popad
end if
push di ; push word info_real_mode_size+0x1000 ;cëåäóþùèé ñåãìåíò çà çàãðóæåííûì ó÷àñòêîì
xor di,di
mov point_to_free_root,di ;çíà÷åíèå ñìåùåíèÿ =0 â êîðíåâîé ôàò òàáëèöå îïèñàíèÿ
pop ds ; çàãðóæåí ñëåäóþùèé ñåãìåíò ò.å. ïóñòîé ñåãìåíò
mov byte [di],al
or ax,-1
inc di
mov word [di],ax
pop ds
mov point_next_fat_str,3
if DEBUG
pushad
mov ax,point_next_fat_str
mov cx,0x0a
mov di,fat_create_msg
call decode
;Show size
mov si,fat_create_msg
call printplain
popad
end if
}
macro register_file_in_fat
;ìàêðîñ ðåãèñòðàöèè ôàéëà â ôàéëîâîé ñòðóêòóðå Fat
;ïîêà ïîääåðæèâàåòñÿ òîëüêî ôàò12, ïîêà ))
;âû÷èñëåíèå ñìåæíûõ êëàñòåðîâ è çàíåñåíèå èíôû â fat/
{
local .step2
local .step3
local .end
local .eof_file
;di point on root dir íà ôðè ñåêöèþ.
push es
mov ax,info_real_mode_size
add ax,0x1000
mov es,ax ; push word info_real_mode_size+0x1000 ;ñåãìåíò ñëåäóþùèé çà çàãðóæåííûì áëîêîì â 64 êá
; îïðåäåëÿåì òèï ôàò ïîêà íå îïðåäåëÿåì, ïîêà òîëüêî ôàò 12
; 12 áèò, äëÿ âû÷åñëåíèÿ ñîñåäíèõ êàëàñòåðîâ.
mov di,firstDataSect ;â ñåêòîðàõ
sub di,size_root_dir
;òåïåðü â ax ðàçìåð â ñåêòîðàõ íà÷àëà ðóò äèð
shl di,9 ;imul 512
add di,point_to_free_root ;ñìåùåíèå â óæå çàïèñàííûõ 32-õ ñòðóêòóðàõ.
;íåîáõîäèìî âíåñòè çíà÷åíèå â ðóò äèð ò.å. 32 áàéòà
if DEBUG
pushad
; mov ax,point_default
; mov ax,
mov cx,0x0a
mov di,show_db2
mov dword[ds:di],' '
mov word [ds:di+4],' '
call decode
;Show size
mov si,show_db2
call printplain
;
; xor ax,ax
; int 0x16
popad
end if
;gs:di - óêàçàòåëü äëÿ âíåñåíèÿ èíôîðàöèè â ðóò îáëàñòü ôàò òàáëèöû èíîðìàöèè î ôàéëå.
mov si,shot_name_fat
mov cx,11
;çàïèøåì â ñòðóêòóðó èìÿ
@@: lodsb
stosb
loop @b
;çàïèøåì àòðèáóòû ôàéëà è DIR_NTRes - çàðåçåâðèðîâàííûé áàéò =0
xor ax,ax
mov ah,ATTR_VOLUME_ID
mov word [es:di],ax
add di,2
;DIR_CrtTimeTenth
mov byte [es:di],100
inc di
;DIR_CrtTime
mov word [es:di],0x032b ;äàòà
add di,2
;DIR_CrtDate
mov word [es:di],0x0 ;âðåìÿ ><
add di,2
;DIR_LstAccDate
mov word [es:di],0x032b ;äàòà ìîåãî
add di,2
;DIR_FstClusHI
mov word [es:di],0x0 ;âðåìÿ äëÿ ôàò12 /16 âñåãäà 0
add di,2
;DIR_WrtTime
mov word [es:di],0x0 ;âðåìÿ ><
add di,2
;DIR_WrtDate
mov word [es:di],0x032b
add di,2
mov ax,point_next_fat_str
mov word [es:di],ax
add di,2
push di
;DIR_FstClusLO Ìëàäøåå ñëîâî íîìåðà ïåðâîãî êëàñòåðà.
; mov ax,point_next_fat_str ;çàãðóçèì óêàçàòåëü íà ýëåìåíò ôàò òàáëèöû ò.å. ýòî íîìåð ôàò çàïèñè
;FATOffset = N + (N / 2) ò.å. ýòî óæå ó íàñ ñìåùåíèå ìû çíàåì ÷òî -íà÷èíàåòñÿ âñå ñ 3-ãî ýëåìåíòà çàïèñè ôàò
mov bx,ax
shr bx,1
add ax,bx
;â àõ ñåé÷àñ FATOffset
;ThisFATEntOffset = BPB_ResvdSecCnt + (FATOffset / BPB_BytsPerSec);
mov bx, word [fat12_buffer.BPB_BytsPerSec]
cwd
idiv bx
;ax=ThisFATEntOffset= rem (FATOffset / BPB_BytsPerSec) ÷åòíûé èëè íå÷åòíûé óêàçàòåëü.
mov si,ax
;íàì íóæíî â öèêëå çàïèñàòü âñå êëàñòåðû êîòîðûå áóäóò èñïîëüçîâàíû äëÿ ðàçìåùåíèÿ ôàéëà.
;óçíàåì ðàçìåð êëàñòåðà.
movzx eax,word [fat12_buffer.BPB_BytsPerSec]
movzx ebx,byte [fat12_buffer.BPB_SecPerClus]
imul eax,ebx
;ax - ðàçìåð êëàñòåðà.
;ñåé÷àñ áóäåì çàïèñûâàòü âî âðåìåííûé áóôåð ôàò òàáëèöó äëÿ âûáðàííîãî ôàéëà. Ïîñêîëüêó ìû åãî çàãðóçèëè âîçìîæíî íå ïîëíîñòüþ
;ìû îáðàáîòàåì çàïèñü äëÿ ôàò ïîëíîñòüþ, â íå çàâèñèìîñòè îò ïðåäåëà áóôåðà ãäå âîçìîæíà ÷àñòü ôàéëà.
mov ebx,save_file_size ;ðàçìåð ôàéëà â áàéòàõ
@@: sub ebx,eax
cmp ebx,eax
jbe .eof_file
inc point_next_fat_str
mov cx,point_next_fat_str ;çàãðóçèì óêàçàòåëü íà ýëåìåíò ôàò òàáëèöû ò.å. ýòî íîìåð ôàò çàïèñè
;FATOffset = N + (N / 2) ò.å. ýòî óæå ó íàñ ñìåùåíèå ìû çíàåì ÷òî -íà÷èíàåòñÿ âñå ñ 3-ãî ýëåìåíòà çàïèñè ôàò
mov dx,ax
shr dx,1
add cx,dx
test si,0x1
jz .step2
shl cx,4
mov word[es:si],cx
inc si
add cx,ax
jmp @b
.step2: and cx,0x0FFF
mov word[es:si],cx
inc si
add cx,ax
jmp @b
.eof_file:
mov cx,0x0fff
test si,0x1
jz .step3
shl cx,4
mov word[es:si],cx
jmp .end
.step3: and cx,0x0FFF
mov word[es:si],cx
.end: inc point_next_fat_str
pop di
;DIR_FileSize 32-áèòíûé DWORD ñîäåðæèò ðàçìåð ôàéëà â áàéòàõ.
mov eax,save_file_size
mov dword [es:di],eax
if DEBUG
pushad
mov di,firstDataSect ;â ñåêòîðàõ
sub di,size_root_dir
;òåïåðü â ax ðàçìåð â ñåêòîðàõ íà÷àëà ðóò äèð
shl di,9 ;imul 512
add di,point_to_free_root ;ñìåùåíèå â óæå çàïèñàííûõ 32-õ ñòðóêòóðàõ.
push di
mov si,dest_name_fat
mov cx,11
;çàïèøåì â ñòðóêòóðó èìÿ
@@: mov al,byte [es:di]
inc di
mov byte [ds:si],al
inc si
loop @b
mov di,si
inc di
pop ax
mov cx,0xa
call decode
mov si,dest_name_fat
call printplain
popad
END IF
add point_to_free_root,32 ;óâåëèöèì ñìåùåíèå äî ñëåäóþùåãî çíà÷åíèÿ.
pop es
}
macro get_firstDataSector
;ìàêðîñ äëÿ âû÷èñëåíèÿ ïåâîãî ñåêòîðà äàííûõ ò.å. äàííûõ ôàéëîâ â ôàòå
;âû÷èñëèì FirstDataSector = BPB_ResvdSecCnt + (BPB_NumFATs * FATSz) + RootDirSectors;
{
mov ax,word [fat12_buffer.BPB_FATSz16]
movzx bx,byte [fat12_buffer.BPB_NumFATs]
imul ax,bx ;9x1=9
;ax=BPB_NumFATs * FATSz
mov bx,word [fat12_buffer.BPB_RootEntCnt] ; count of 32-byte dir. entries (224*32 = 14 sectors= 7 kb)
shr bx,4 ;imul bx,32 and then div 512 -> in bx size in sectors
add ax,bx ;9+14=23
mov size_root_dir,bx
movzx bx,byte [fat12_buffer.BPB_RsvdSecCnt] ;add 1 for fat 16/12
add ax,bx
;ax=firstDataSector - ãäå íà÷èíàåòñÿ ïåðâûé ñåêòîðî îò 0 ñåêòîðà â ñåêòîðàõ. - ôàêòè÷åñêè = 24 ñåêòîð
mov firstDataSect,ax ;ñîõðàíèì äëÿ âû÷èñëåíèÿ
; ïîëó÷èìçíà÷åíèå êëàñòåðîâ, ýòî îáúåì â êîòîðûé ìû ìîæåì çàïèñàòü äàííûå
mov bx,word [fat12_buffer.BPB_TotSec16]
sub bx,ax
mov ax,bx
movzx bx,byte [fat12_buffer.BPB_SecPerClus]
cwd
idiv bx
mov DataClasters,ax
if DEBUG
pushad
mov ax,firstDataSect ;ïåðâûé ñåêòîð äàííûõ
mov cx,0x0a
mov di,firstDataSect_msg
call decode
;Show size
mov si,firstDataSect_msg
call printplain
;;;;;;;;;;;;;;;;;;;;;;;;;;
mov ax,size_root_dir ;ðàçìåð ðóò äèð â ñåòîêòîðàõ
mov cx,0x0a
mov di,size_root_dir_msg
call decode
;Show size
mov si,size_root_dir_msg
call printplain
;;;;;;;;;;;;;;;;;;;;;;;;;;
mov ax,DataClasters ;êëàñòåðû
mov cx,0x0a
mov di,DataClasters_msg
call decode
;Show size
mov si,DataClasters_msg
call printplain
popad
end if
}
macro use_RamdiskPATHS
;ïàðñèíã ïóòè èñòî÷íèêà ôàéëîâ.
{
}
macro use_RamdiskPATHD
;ïàðñèíã ïóòè íàçíà÷åíèÿ ôàéëîâ.
{
}
macro check_name_file
;ìàêðîñ ïðîâåðêè èìåíè íà ïîâòîð, èìÿ äîëæíî áûòü óíèêàëüíûì.
;âõîäíûå äàííûå: es- ñåãìåíò ãäå ëåæèò ôàéë äëÿ ïàðñèíãà ò.å. startos.ini
;di - óêàçàòåëü íà èìÿ ôàéëà ò.å. es:di óêàçûâàåò íà èìÿ ôàéëà íàçíà÷åíèÿ
;âûõîäíûå äàííûå eax =-1 èìÿ ñîâïàëî, eax=0 èìÿ íå ñîâïàëî.
{
local .no_equal
local .exit
local .loop_size_root_dir
;âû÷èñëèì äëèííó ñòðî÷êè èìåíè íàçíà÷åíèÿ, êîòîðóþ áóäåì ñðàâíèâàòü ñ óæå çàïèñàííûìè äàííûìè.
;ïðåîáðàçóåì â àíàëîã ôàò çàïèñè ñòî÷êó ñ èìåíåì íàçíà÷åíèÿ
convertion_file_name ; ïðåîáðàçîâàëè èìÿ ïî íóæíûì ïðàâèëàì
test ax,ax
jnz .exit
lea si,[shot_name_fat] ; desination name of file
;âû÷èñëèì óêàçàòåëü íà êîðíåâóþ äèðåêòîðèþ
mov di,firstDataSect
sub di,size_root_dir
;òåïåðü â ax ðàçìåð â ñåêòîðàõ íà÷àëà ðóò äèð
shl di,9 ;imul 512
;di= Ýòî ñìåùåíèå îò íà÷àëà áóôåðà äî ðóò äèðåêòîðèè. â ïðåäåëàõ 64 êá.
;çàãðóçèì çíà÷åíèå - ò.å. êîë-âî ýëåìåíòîâ, êîòîðûå ìû ìîæåì ïðîñìàòðèâàòü.
mov dx,root_dir_entry_count
mov ax,info_real_mode_size
add ax,0x1000
mov gs,ax
.loop_size_root_dir:
DEBUG1 equ 0
if DEBUG1
pushad
push di
mov eax,dword[gs:di]
lea si,[check_root_fat_+14]
mov dword [ds:si],'----'
mov dword [ds:si+4],'----'
mov dword [ds:si+8],'----'
mov dword[ds:si],eax
mov eax,dword[gs:di+4]
mov dword[ds:si+4],eax
mov eax,dword[gs:di+8]
mov dword[ds:si+8],eax
;
xor eax,eax
mov ax,gs;point_next_fat_str
mov cx,0x0a
mov di,check_root_fat_
mov dword [di],' '
mov word [di+4],' '
call decode
xor eax,eax
pop ax
mov di,(check_root_fat_+7)
mov dword [di],' '
mov word [di+4],' '
call decode
;Show size
lea si,[check_root_fat_]
call printplain
lea si,[shot_name_fat]
call printplain
xor ax,ax
int 0x16
popad
end if
xor bx,bx
mov cx,11 ;size of name in struct FAT
@@:
mov al,byte [ds:si+bx] ;ds:si - point to name of convertion variable.
mov ah,byte [gs:di+bx] ;gs:di - point to name in fat struct
inc bx
if DEBUG
; pushad
; lea si,[check_root_fat_+14]
; mov dword [ds:si],'----'
; mov word [ds:si],ax
; call printplain
; xor ax,ax
; int 0x16
; popad
end if
cmp ah,al
jnz .no_equal
; dec cx
; jnz @b
loop @b
;.succesfuly:
;ïå÷àëüíî, òàêîå èìÿ óæå èìååòñÿ :(
or ax,-1
jmp .exit
.no_equal:
add di,32 ;fat struct =32 byte
dec dx
jnz .loop_size_root_dir
;.exit_check_name:
and ax,0
.exit:
if DEBUG
pushad
;Show size
lea si,[check_name_fat_msg_n]
test ax,ax
jz @f
lea si,[check_name_fat_msg_y]
call printplain
lea si,[alarm_msg]
@@: call printplain
popad
end if
}
macro convertion_file_name
;ìàêðîñ êîíâåðòàöèè èìåíè, ýòî íóæíî ïîñêîëüêó ôîðìàò ïðåäñòàâëåííûé íå ñîîòâåòñâóåò ôàò è íàïðÿìóþ ðåäêî ìîæíî êîãäà èñïîëüçîâàòü
;ïðåîáðàçîâàíèå èìåíè òèïà hello.asm â 'HELLO ASM', â ñîîòâåòñòâèè ñ ïðàâèëàìè fat.
;âõîäíûå ïàðàìåòðû es:di óêàçàòåëü íà èìÿ ôàéëà êîòîðîå íóæíî ïðåîáðàçîâàòü, êîíå÷íûé áóôåð shot_name_fat
{
local .next_step
local .error
local .st1
local .st2
local .st2_l
local .st3
local .st4_s
local .st4
local .st5
;âû÷èñëèì äëèííó ñòðî÷êè èìåíè íàçíà÷åíèÿ, êîòîðóþ áóäåì ñðàâíèâàòü ñ óæå çàïèñàííûìè äàííûìè.
; mov di,point_to_dest_file_name âõîäíîé ïàðàìåòð
mov si,shot_name_fat
or first_input,-1 ;ïðè ïåðâîì âõîäå óñòàíàâëèâàåì ôëàã
mov cx,11 ;äëèííà èìåíè â ñòóêòóðå ôàò òàáëèöû
@@:
mov al,byte [es:di]
cmp al,0xa
jz .st4_s
cmp al,0xd
jz .st4_s
cmp al,0x20
jz .st4_s
cmp al,0x20
jb .error
cmp al,0x22
jz .error
cmp al,0x2a
jz .error
cmp al,0x2b
jz .error
cmp al,0x2c
jz .error
cmp al,0x2F
jz .error
cmp al,0x3a
jz .error
cmp al,0x3b
jz .error
cmp al,0x3c
jz .error
cmp al,0x3d
jz .error
cmp al,0x3E
jz .error
cmp al,0x3F
jz .error
cmp al,0x5b
jz .error
cmp al,0x5c
jz .error
cmp al,0x5d
jz .error
cmp al,0x7c
jz .error
cmp first_input,-1
jnz .next_step
and first_input,0 ;ñáîðîñèì ôëàã.
cmp al,'.'
jz .error ;îáðàáîòêà òî÷êè, ôàéë íå ìîæåò íà÷èíàòüñÿ ñ òî÷êè
.next_step:
cmp al,0x2e
jnz .st2 ;îáðàáîòêà òî÷êè, â ñåðåäèíå ôàéëà
;òóò ó íàñ óñòàíîâëåí ðàçäåëèòåëü
;âñå îñòàëüíåî ìåñòî çàéìóò ïðîáåëû
mov al,' '
;!fixme îáðàáîòàíû íå âñå èñêëþ÷åíèÿ :(
cmp cl,3 ;ôîðìàò ôàéëà òàêîé GIDGIDIIASM ò.å. gidgidii.asm
jbe .st2
.st3:
mov byte [si],al
inc si
dec cx
cmp cx,3
ja .st3
; inc cx
inc di
jmp @b
.st2:
cmp al,0x60
jbe .st2_l
xor al,0x20 ;ñäåëàåì çàãëàâíûå áóêâû
.st2_l: mov byte [si],al
inc di
inc si
; dec cx
; jnz @b
loop @b
.st5: xor ax,ax
jmp @f
;;;;;;;;ôàéë çàêîí÷èëñÿ, è íóæíî âíåñòè â êîíåö ïðîáåëû
.st4_s: mov al,' '
.st4: mov byte [si],al
inc si
loop .st4
jmp .st5
.error: or ax,-1
@@:
if DEBUG
pushad
mov si,convertion_file_name_msg_y
test ax,ax
jz @f
mov si,convertion_file_name_msg_n
@@: call printplain
mov si,shot_name_fat
mov byte [si+12],0
call printplain
popad
end if
}
macro move_file_up
;ìàêðîñ êîòîðûé ïåðåìåùàåò çà 1 ìá ñ ïðàâèëàìè ôàò äàííûå ôàéëà.
{
local .st1
local .correct_on_byte
;ñåé÷àñ èìååò áûòü ñèòóàöèÿ, êîãäà BPB óæå ïåðåìåùåí çà 1 ìá, ôàò, è ðóò äèð áóäóò ïîçæå ïåðåìåùåíû,
;à íàì íóæíî âû÷èñëèòü ìåñòî, è ïåðåíåñòè òóäà ñîäåðæèìîå ôàéëà
;ïîëó÷åíîå çíà÷åíèå óêàçûâàåò â áàéòàõ íà íà÷àëî äàííûõ
mov ax,info_real_mode_size ; ñåãìåíò ãäå ðàñïîëîæåíû äàííûå
mov si,table_15_87
mov word [si+8*2+2],ax
;ñìåùåíèå äî äàííûõ óæå çà 1-ì ìá
movzx eax,firstDataSect
movzx edx,data_offset
add eax,edx
movzx ebx,word [fat12_buffer.BPB_BytsPerSec]
movzx edx,byte [fat12_buffer.BPB_SecPerClus]
imul bx,dx ;ïîëó÷èì ðàçìåð êëàñòåðà
push ebx ;save bx
imul eax,ebx
; shl eax,9 ;óìíîæèì íà 512
if DEBUG
pushad
xor eax,eax
mov ax,info_real_mode_size
mov cx,0x0a
mov di,seg_where_get_data
mov dword [di],' '
mov word [di+4],' '
call decode
;Show size
mov si,seg_where_get_data
call printplain
popad
end if
; mov bx,word [fat12_buffer.BPB_BytsPerSec]
; movzx dx,byte [fat12_buffer.BPB_SecPerClus]
; imul bx,dx
; cwd
; idiv bx
mov dl,0x10
@@: cmp eax,0x00010000
jb @f
sub eax,0x00010000
inc dl
jmp @b
@@: mov byte [si+8*3+3],dl ;êóäà ïèñàòü
mov word [si+8*3+2],ax
mov ecx,save_file_size ;ðàçìåð ôàéëà â áàéòàõ.
cmp ecx,0x0000ffff ;ðàçìåð áëîêà ò.å. 64 êá
jbe .correct_on_byte ;êîððåêòèðîâêà íà áàéò çíà÷åíèÿ
mov ecx,0x00010000 ;65536
sub save_file_size,ecx ;îòíèìèì
; jmp .st1 ;ïîëó÷èì 0õ8000
;êîððåêòèðîâêà çíà÷åíèÿ äîëæíà áûòü âûïîëåíåíà íà ðàçìåð êëàñòåðà
.correct_on_byte:
;/óçíàåì ðàçìåð êëàñòåðà
pop eax ;restore size of claster
push ecx
@@: inc data_offset
cmp eax,ecx
jae @f
sub ecx,eax
jmp @b
@@: pop ecx
test ecx,0x1
jz .st1
inc ecx
.st1: shr ecx,1 ; ïðåîáðàçîâàòü çíà÷åíèå äëÿ 0x87 function
;ïåðåíåñåì áëîê çà 1 ìá
push es
push ds
pop es
mov ah, 0x87
int 0x15
pop es
if DEBUG
pusha
; mov ax,point_next_fat_str
mov cx,0x0a
mov di,return_code_af_move
call decode
;Show size
mov si,return_code_af_move
call printplain
popa
end if
}
macro move_up_fat_and_root_d
;ìàêðîñ, êîòîðûé ïîçâîëÿåò ïåðåíåñòè âûøå 1 ìá â ñòðóêòóðó îáðàçà ôàò òàáëèöó è ðóò äèðåêòîðèþ
{
local .st1
mov ax,info_real_mode_size
add ax,0x1000
mov si,table_15_87
mov word [si+8*2+2],ax
;ñìåùåíèå äî äàííûõ
mov ax,512
mov word [si+8*3+2],ax
;fixme! òóò íåîáõîäèìî ñäåëàòü ïîäåðæêó ò.å. ôîðìèðîâàòü ñìåùåíèå ôàéëà â óæå çàïèñàííûõ äàííûõ.
movzx ecx,word [fat12_buffer.BPB_FATSz16]
movzx bx,byte [fat12_buffer.BPB_NumFATs]
imul cx,bx ;9x1=9
add cx,size_root_dir ;ðàçìåð êîðíåâîé äèððåêòîðèè
shl ecx,9 ;imul 512
;êîððåêòèðîâêà çíà÷åíèÿ
test ecx,0x1
jz .st1
inc ecx
.st1: shr ecx,1
push es
push ds
pop es
mov ah, 0x87
int 0x15
pop es
if DEBUG
pusha
; mov ax,point_next_fat_str
mov cx,0x0a
mov di,return_code_af_fat_m
call decode
;Show size
mov si,return_code_af_fat_m
call printplain
popa
end if
}