Rev 465 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
425 | victor | 1 | $Revision: 495 $ |
431 | serge | 2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
465 | serge | 3 | ;; ;; |
431 | serge | 4 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
5 | ;; Distributed under terms of the GNU General Public License ;; |
||
6 | ;; ;; |
||
7 | ;; ;; |
||
465 | serge | 8 | ;; System service for filesystem call ;; |
9 | ;; (C) 2004 Ville Turjanmaa, License: GPL ;; |
||
10 | ;; 29.04.2006 Elimination of hangup after the ;; |
||
11 | ;; expiration hd_wait_timeout (for LBA) - Mario79 ;; |
||
431 | serge | 12 | ;; 15.01.2005 get file size/attr/date, ;; |
13 | ;; file_append (only for hd) - ATV ;; |
||
465 | serge | 14 | ;; 23.11.2004 test if hd/partition is set - ATV ;; |
15 | ;; 18.11.2004 get_disk_info and more error codes - ATV ;; |
||
16 | ;; 08.11.2004 expand_pathz and rename (only for hd) - ATV ;; |
||
17 | ;; 20.10.2004 Makedir/Removedir (only for hd) - ATV ;; |
||
18 | ;; ;; |
||
431 | serge | 19 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ha | 20 | |
21 | iglobal |
||
22 | dir0: db 'HARDDISK ' |
||
23 | db 'RAMDISK ' |
||
24 | db 'FLOPPYDISK ' |
||
25 | db 0 |
||
26 | |||
27 | dir1: db 'FIRST ' |
||
28 | db 'SECOND ' |
||
29 | db 'THIRD ' |
||
30 | db 'FOURTH ' |
||
31 | db 0 |
||
32 | |||
33 | not_select_IDE db 0 |
||
34 | |||
35 | hd_address_table: dd 0x1f0,0x00,0x1f0,0x10 |
||
36 | dd 0x170,0x00,0x170,0x10 |
||
37 | endg |
||
38 | |||
74 | mario79 | 39 | file_system: |
40 | |||
1 | ha | 41 | ; IN: |
42 | ; |
||
133 | diamond | 43 | ; eax = 0 ; read file /RamDisk/First 6 |
1 | ha | 44 | ; eax = 8 ; lba read |
45 | ; eax = 15 ; get_disk_info |
||
46 | ; |
||
47 | ; OUT: |
||
48 | ; |
||
49 | ; eax = 0 : read ok |
||
61 | halyavin | 50 | ; eax = 1 : no hd base and/or partition defined |
71 | diamond | 51 | ; eax = 2 : function is unsupported for this FS |
1 | ha | 52 | ; eax = 3 : unknown FS |
53 | ; eax = 4 : partition not defined at hd |
||
54 | ; eax = 5 : file not found |
||
55 | ; eax = 6 : end of file |
||
56 | ; eax = 7 : memory pointer not in application area |
||
57 | ; eax = 8 : disk full |
||
58 | ; eax = 9 : fat table corrupted |
||
59 | ; eax = 10 : access denied |
||
83 | diamond | 60 | ; eax = 11 : disk error |
1 | ha | 61 | ; |
62 | ; ebx = size |
||
63 | |||
61 | halyavin | 64 | ; \begin{diamond}[18.03.2006] |
65 | ; for subfunction 16 (start application) error codes must be negative |
||
64 | mario79 | 66 | ; because positive values are valid PIDs |
61 | halyavin | 67 | ; so possible return values are: |
68 | ; eax > 0 : process created, eax=PID |
||
69 | |||
70 | ; -0x10 <= eax < 0 : -eax is filesystem error code: |
||
71 | ; eax = -1 = 0xFFFFFFFF : no hd base and/or partition defined |
||
72 | ; eax = -3 = 0xFFFFFFFD : unknown FS |
||
73 | ; eax = -5 = 0xFFFFFFFB : file not found |
||
74 | ; eax = -6 = 0xFFFFFFFA : unexpected end of file (probably not executable file) |
||
75 | ; eax = -9 = 0xFFFFFFF7 : fat table corrupted |
||
76 | ; eax = -10 = 0xFFFFFFF6 : access denied |
||
77 | |||
78 | ; -0x20 <= eax < -0x10: eax is process creation error code: |
||
79 | ; eax = -0x20 = 0xFFFFFFE0 : too many processes |
||
80 | ; eax = -0x1F = 0xFFFFFFE1 : not Menuet/Kolibri executable |
||
81 | ; eax = -0x1E = 0xFFFFFFE2 : no memory |
||
82 | |||
83 | ; ebx is not changed |
||
84 | |||
85 | ; \end{diamond}[18.03.2006] |
||
86 | |||
1 | ha | 87 | ; Extract parameters |
465 | serge | 88 | ; add eax, std_application_base_address ; abs start of info block |
1 | ha | 89 | |
90 | cmp dword [eax+0],15 ; GET_DISK_INFO |
||
91 | je fs_info |
||
92 | |||
379 | serge | 93 | cmp dword [CURRENT_TASK],1 ; no memory checks for kernel requests |
1 | ha | 94 | jz no_checks_for_kernel |
95 | mov edx,eax |
||
96 | cmp dword [eax+0],1 |
||
97 | jnz .usual_check |
||
98 | mov ebx,[eax+12] |
||
465 | serge | 99 | ; add ebx,std_application_base_address |
1 | ha | 100 | mov ecx,[eax+8] |
101 | call check_region |
||
102 | test eax,eax |
||
103 | jnz area_in_app_mem |
||
379 | serge | 104 | |
1 | ha | 105 | .error_output: |
106 | mov esi,buffer_failed |
||
107 | call sys_msg_board_str |
||
61 | halyavin | 108 | ; mov eax,7 |
1 | ha | 109 | mov dword [esp+36],7 |
110 | ret |
||
111 | iglobal |
||
61 | halyavin | 112 | buffer_failed db 'K : Buffer check failed',13,10,0 |
379 | serge | 113 | endg |
1 | ha | 114 | .usual_check: |
115 | cmp dword [eax+0],0 |
||
116 | mov ecx,512 |
||
117 | jnz .small_size |
||
118 | mov ecx,[eax+8] |
||
119 | shl ecx,9 |
||
120 | .small_size: |
||
121 | mov ebx,[eax+12] |
||
465 | serge | 122 | ; add ebx,std_application_base_address |
1 | ha | 123 | call check_region |
124 | test eax,eax |
||
125 | jz .error_output |
||
126 | area_in_app_mem: |
||
127 | mov eax,edx |
||
128 | no_checks_for_kernel: |
||
129 | |||
130 | fs_read: |
||
131 | |||
132 | mov ebx,[eax+20] ; program wants root directory ? |
||
133 | test bl,bl |
||
134 | je fs_getroot |
||
135 | test bh,bh |
||
136 | jne fs_noroot |
||
137 | fs_getroot: |
||
61 | halyavin | 138 | ; \begin{diamond}[18.03.2006] |
139 | ; root - only read is allowed |
||
140 | ; other operations return "access denied", eax=10 |
||
141 | ; (execute operation returns eax=-10) |
||
64 | mario79 | 142 | cmp dword [eax], 0 |
143 | jz .read_root |
||
147 | diamond | 144 | mov dword [esp+36], 10 |
64 | mario79 | 145 | ret |
61 | halyavin | 146 | .read_root: |
147 | ; \end{diamond}[18.03.2006] |
||
1 | ha | 148 | mov esi,dir0 |
149 | mov edi,[eax+12] |
||
465 | serge | 150 | ; add edi,std_application_base_address |
1 | ha | 151 | mov ecx,11 |
61 | halyavin | 152 | push ecx |
64 | mario79 | 153 | ; cld ; already is |
1 | ha | 154 | rep movsb |
61 | halyavin | 155 | mov al,0x10 |
1 | ha | 156 | stosb |
157 | add edi,32-11-1 |
||
61 | halyavin | 158 | pop ecx |
1 | ha | 159 | rep movsb |
160 | stosb |
||
61 | halyavin | 161 | and dword [esp+36],0 ; ok read |
1 | ha | 162 | mov dword [esp+24],32*2 ; size of root |
163 | ret |
||
164 | |||
165 | fs_info: ;start of code - Mihasik |
||
61 | halyavin | 166 | push eax |
1 | ha | 167 | cmp [eax+21],byte 'h' |
168 | je fs_info_h |
||
169 | cmp [eax+21],byte 'H' |
||
170 | je fs_info_h |
||
171 | cmp [eax+21],byte 'r' |
||
172 | je fs_info_r |
||
173 | cmp [eax+21],byte 'R' |
||
174 | je fs_info_r |
||
175 | mov eax,3 ;if unknown disk |
||
176 | xor ebx,ebx |
||
177 | xor ecx,ecx |
||
178 | xor edx,edx |
||
179 | jmp fs_info1 |
||
180 | fs_info_r: |
||
181 | call ramdisk_free_space ;if ramdisk |
||
182 | mov ecx,edi ;free space in ecx |
||
183 | shr ecx,9 ;free clusters |
||
184 | mov ebx,2847 ;total clusters |
||
185 | mov edx,512 ;cluster size |
||
186 | xor eax,eax ;always 0 |
||
187 | jmp fs_info1 |
||
188 | fs_info_h: ;if harddisk |
||
189 | call get_hd_info |
||
190 | fs_info1: |
||
191 | pop edi |
||
192 | mov [esp+36],eax |
||
193 | mov [esp+24],ebx ; total clusters on disk |
||
194 | mov [esp+32],ecx ; free clusters on disk |
||
195 | mov [edi],edx ; cluster size in bytes |
||
196 | ret ;end of code - Mihasik |
||
197 | |||
198 | fs_noroot: |
||
199 | |||
61 | halyavin | 200 | push dword [eax+0] ; read/write/delete/.../makedir/rename/lba/run |
201 | push dword [eax+4] ; 512 block number to read |
||
202 | push dword [eax+8] ; bytes to write/append or 512 blocks to read |
||
1 | ha | 203 | mov ebx,[eax+12] |
465 | serge | 204 | ; add ebx,std_application_base_address |
1 | ha | 205 | push ebx ; abs start of return/save area |
206 | |||
207 | lea esi,[eax+20] ; abs start of dir + filename |
||
61 | halyavin | 208 | mov edi,[eax+16] |
465 | serge | 209 | ; add edi,std_application_base_address ; abs start of work area |
1 | ha | 210 | |
211 | call expand_pathz |
||
212 | |||
213 | push edi ; dir start |
||
214 | push ebx ; name of file start |
||
215 | |||
216 | mov eax,[edi+1] |
||
217 | cmp eax,'RD ' |
||
218 | je fs_yesramdisk |
||
61 | halyavin | 219 | cmp eax,'RAMD' |
1 | ha | 220 | jne fs_noramdisk |
221 | |||
222 | fs_yesramdisk: |
||
223 | |||
224 | cmp byte [edi+1+11],0 |
||
225 | je fs_give_dir1 |
||
226 | |||
227 | mov eax,[edi+1+12] |
||
228 | cmp eax,'1 ' |
||
229 | je fs_yesramdisk_first |
||
61 | halyavin | 230 | cmp eax,'FIRS' |
1 | ha | 231 | jne fs_noramdisk |
232 | |||
233 | fs_yesramdisk_first: |
||
234 | |||
235 | cmp dword [esp+20],8 ; LBA read ramdisk |
||
236 | jne fs_no_LBA_read_ramdisk |
||
237 | |||
238 | mov eax,[esp+16] ; LBA block to read |
||
239 | mov ecx,[esp+8] ; abs pointer to return area |
||
240 | |||
241 | call LBA_read_ramdisk |
||
242 | jmp file_system_return |
||
243 | |||
244 | |||
245 | fs_no_LBA_read_ramdisk: |
||
246 | |||
247 | cmp dword [esp+20],0 ; READ |
||
248 | jne fs_noramdisk_read |
||
249 | |||
250 | mov eax,[esp+4] ; fname |
||
251 | add eax,2*12+1 |
||
252 | mov ebx,[esp+16] ; block start |
||
253 | inc ebx |
||
254 | mov ecx,[esp+12] ; block count |
||
255 | mov edx,[esp+8] ; return |
||
256 | mov esi,[esp+0] |
||
257 | sub esi,eax |
||
258 | add esi,12+1 ; file name length |
||
259 | call fileread |
||
260 | |||
261 | jmp file_system_return |
||
262 | |||
263 | |||
264 | fs_noramdisk_read: |
||
265 | fs_noramdisk: |
||
379 | serge | 266 | |
1 | ha | 267 | ;******************************************************************** |
268 | mov eax,[edi+1] |
||
269 | cmp eax,'FD ' |
||
270 | je fs_yesflpdisk |
||
61 | halyavin | 271 | cmp eax,'FLOP' |
1 | ha | 272 | jne fs_noflpdisk |
273 | |||
274 | fs_yesflpdisk: |
||
275 | call reserve_flp |
||
276 | |||
277 | cmp byte [edi+1+11],0 |
||
278 | je fs_give_dir1 |
||
279 | |||
280 | mov eax,[edi+1+12] |
||
379 | serge | 281 | cmp eax,'1 ' |
1 | ha | 282 | je fs_yesflpdisk_first |
61 | halyavin | 283 | cmp eax,'FIRS' |
1 | ha | 284 | je fs_yesflpdisk_first |
285 | cmp eax,'2 ' |
||
286 | je fs_yesflpdisk_second |
||
61 | halyavin | 287 | cmp eax,'SECO' |
1 | ha | 288 | jne fs_noflpdisk |
289 | jmp fs_yesflpdisk_second |
||
290 | |||
291 | fs_yesflpdisk_first: |
||
292 | mov [flp_number],1 |
||
293 | jmp fs_yesflpdisk_start |
||
294 | fs_yesflpdisk_second: |
||
295 | mov [flp_number],2 |
||
296 | fs_yesflpdisk_start: |
||
297 | cmp dword [esp+20],0 ; READ |
||
298 | jne fs_noflpdisk_read |
||
299 | |||
300 | mov eax,[esp+4] ; fname |
||
301 | add eax,2*12+1 |
||
302 | mov ebx,[esp+16] ; block start |
||
303 | inc ebx |
||
304 | mov ecx,[esp+12] ; block count |
||
305 | mov edx,[esp+8] ; return |
||
306 | mov esi,[esp+0] |
||
307 | sub esi,eax |
||
308 | add esi,12+1 ; file name length |
||
309 | call floppy_fileread |
||
310 | |||
311 | jmp file_system_return |
||
312 | |||
313 | |||
314 | fs_noflpdisk_read: |
||
315 | fs_noflpdisk: |
||
316 | ;***************************************************************** |
||
379 | serge | 317 | |
1 | ha | 318 | mov eax,[edi+1] |
319 | cmp eax,'HD0 ' |
||
320 | je fs_yesharddisk_IDE0 |
||
321 | cmp eax,'HD1 ' |
||
322 | je fs_yesharddisk_IDE1 |
||
323 | cmp eax,'HD2 ' |
||
324 | je fs_yesharddisk_IDE2 |
||
325 | cmp eax,'HD3 ' |
||
326 | je fs_yesharddisk_IDE3 |
||
327 | jmp old_path_harddisk |
||
328 | fs_yesharddisk_IDE0: |
||
329 | call reserve_hd1 |
||
330 | mov [hdbase],0x1f0 |
||
331 | mov [hdid],0x0 |
||
332 | mov [hdpos],1 |
||
333 | jmp fs_yesharddisk_partition |
||
334 | fs_yesharddisk_IDE1: |
||
335 | call reserve_hd1 |
||
336 | mov [hdbase],0x1f0 |
||
337 | mov [hdid],0x10 |
||
338 | mov [hdpos],2 |
||
339 | jmp fs_yesharddisk_partition |
||
340 | fs_yesharddisk_IDE2: |
||
341 | call reserve_hd1 |
||
342 | mov [hdbase],0x170 |
||
343 | mov [hdid],0x0 |
||
344 | mov [hdpos],3 |
||
345 | jmp fs_yesharddisk_partition |
||
346 | fs_yesharddisk_IDE3: |
||
347 | call reserve_hd1 |
||
348 | mov [hdbase],0x170 |
||
349 | mov [hdid],0x10 |
||
350 | mov [hdpos],4 |
||
351 | fs_yesharddisk_partition: |
||
321 | diamond | 352 | call reserve_hd_channel |
379 | serge | 353 | ; call choice_necessity_partition |
354 | ; jmp fs_yesharddisk_all |
||
1 | ha | 355 | jmp fs_for_new_semantic |
356 | |||
357 | choice_necessity_partition: |
||
358 | mov eax,[edi+1+12] |
||
359 | call StringToNumber |
||
360 | mov [fat32part],eax |
||
361 | choice_necessity_partition_1: |
||
362 | mov ecx,[hdpos] |
||
363 | xor eax,eax |
||
389 | serge | 364 | mov [hd_entries], eax ; entries in hd cache |
365 | mov edx,DRIVE_DATA+2 |
||
1 | ha | 366 | search_partition_array: |
367 | mov bl,[edx] |
||
368 | movzx ebx,bl |
||
369 | add eax,ebx |
||
370 | inc edx |
||
371 | loop search_partition_array |
||
372 | sub eax,ebx |
||
373 | add eax,[fat32part] |
||
374 | dec eax |
||
375 | xor edx,edx |
||
376 | imul eax,100 |
||
389 | serge | 377 | add eax,DRIVE_DATA+0xa |
1 | ha | 378 | mov [transfer_adress],eax |
379 | call partition_data_transfer_1 |
||
380 | ret |
||
381 | |||
382 | old_path_harddisk: |
||
383 | mov eax,[edi+1] |
||
384 | cmp eax,'HD ' |
||
385 | je fs_yesharddisk |
||
61 | halyavin | 386 | cmp eax,'HARD' |
1 | ha | 387 | jne fs_noharddisk |
388 | |||
389 | fs_yesharddisk: |
||
390 | cmp dword [esp+20],8 ; LBA read |
||
391 | jne fs_no_LBA_read |
||
392 | mov eax,[esp+16] ; LBA block to read |
||
393 | lea ebx,[edi+1+12] ; pointer to FIRST/SECOND/THIRD/FOURTH |
||
394 | mov ecx,[esp+8] ; abs pointer to return area |
||
395 | call LBA_read |
||
396 | jmp file_system_return |
||
397 | |||
398 | fs_no_LBA_read: |
||
399 | |||
400 | cmp byte [edi+1+11],0 ; directory read |
||
401 | je fs_give_dir1 |
||
63 | halyavin | 402 | call reserve_hd1 |
1 | ha | 403 | fs_for_new_semantic: |
379 | serge | 404 | call choice_necessity_partition |
1 | ha | 405 | |
406 | fs_yesharddisk_all: |
||
407 | mov eax,1 |
||
147 | diamond | 408 | mov ebx, [esp+24+24] |
1 | ha | 409 | cmp [hdpos],0 ; is hd base set? |
63 | halyavin | 410 | jz hd_err_return |
1 | ha | 411 | cmp [fat32part],0 ; is partition set? |
63 | halyavin | 412 | jnz @f |
413 | hd_err_return: |
||
321 | diamond | 414 | call free_hd_channel |
63 | halyavin | 415 | and [hd1_status], 0 |
416 | jmp file_system_return |
||
417 | @@: |
||
1 | ha | 418 | |
419 | cmp dword [esp+20],0 ; READ |
||
420 | jne fs_noharddisk_read |
||
421 | |||
422 | mov eax,[esp+0] ; /fname |
||
423 | lea edi,[eax+12] |
||
424 | mov byte [eax],0 ; path to asciiz |
||
425 | inc eax ; filename start |
||
426 | |||
427 | mov ebx,[esp+12] ; count to read |
||
428 | mov ecx,[esp+8] ; buffer |
||
429 | mov edx,[esp+4] |
||
430 | add edx,12*2 ; dir start |
||
431 | sub edi,edx ; path length |
||
432 | mov esi,[esp+16] ; blocks to read |
||
433 | |||
434 | call file_read |
||
435 | |||
436 | mov edi,[esp+0] |
||
437 | mov byte [edi],'/' |
||
438 | |||
321 | diamond | 439 | call free_hd_channel |
440 | and [hd1_status], 0 |
||
1 | ha | 441 | jmp file_system_return |
442 | |||
443 | fs_noharddisk_read: |
||
444 | |||
321 | diamond | 445 | call free_hd_channel |
446 | and [hd1_status], 0 |
||
1 | ha | 447 | |
448 | fs_noharddisk: |
||
61 | halyavin | 449 | ; \begin{diamond}[18.03.2006] |
64 | mario79 | 450 | mov eax, 5 ; file not found |
61 | halyavin | 451 | ; à ìîæåò áûòü, âîçâðàùàòü äðóãîé êîä îøèáêè? |
147 | diamond | 452 | mov ebx, [esp+24+24] ; do not change ebx in application |
61 | halyavin | 453 | ; \end{diamond}[18.03.2006] |
1 | ha | 454 | |
455 | file_system_return: |
||
456 | |||
457 | add esp,24 |
||
458 | |||
459 | mov [esp+36],eax |
||
460 | mov [esp+24],ebx |
||
461 | ret |
||
462 | |||
463 | |||
464 | fs_give_dir1: |
||
465 | |||
61 | halyavin | 466 | ; \begin{diamond}[18.03.2006] |
467 | ; /RD,/FD,/HD - only read is allowed |
||
468 | ; other operations return "access denied", eax=10 |
||
469 | ; (execute operation returns eax=-10) |
||
64 | mario79 | 470 | cmp dword [esp+20], 0 |
471 | jz .read |
||
472 | add esp, 20 |
||
473 | pop ecx |
||
147 | diamond | 474 | mov dword [esp+36], 10 |
64 | mario79 | 475 | ret |
61 | halyavin | 476 | .read: |
477 | ; \end{diamond}[18.03.2006] |
||
478 | mov al,0x10 |
||
1 | ha | 479 | mov ebx,1 |
480 | mov edi,[esp+8] |
||
481 | mov esi,dir1 |
||
482 | fs_d1_new: |
||
483 | mov ecx,11 |
||
61 | halyavin | 484 | ; cld |
1 | ha | 485 | rep movsb |
486 | stosb |
||
487 | add edi,32-11-1 |
||
488 | dec ebx |
||
489 | jne fs_d1_new |
||
490 | |||
491 | add esp,24 |
||
492 | |||
61 | halyavin | 493 | and dword [esp+36],0 ; ok read |
1 | ha | 494 | mov dword [esp+24],32*1 ; dir/data size |
495 | ret |
||
496 | |||
497 | |||
498 | |||
499 | LBA_read_ramdisk: |
||
500 | |||
501 | cmp [lba_read_enabled],1 |
||
502 | je lbarrl1 |
||
503 | |||
504 | xor ebx,ebx |
||
505 | mov eax,2 |
||
506 | ret |
||
507 | |||
508 | lbarrl1: |
||
509 | |||
510 | cmp eax,18*2*80 |
||
511 | jb lbarrl2 |
||
512 | xor ebx,ebx |
||
513 | mov eax,3 |
||
514 | ret |
||
515 | |||
516 | lbarrl2: |
||
517 | |||
518 | pushad |
||
519 | |||
520 | call restorefatchain |
||
521 | |||
522 | mov edi,ecx |
||
523 | mov esi,eax |
||
524 | |||
525 | shl esi,9 |
||
381 | serge | 526 | add esi,RAMDISK |
1 | ha | 527 | mov ecx,512/4 |
61 | halyavin | 528 | ; cld |
1 | ha | 529 | rep movsd |
530 | |||
531 | popad |
||
532 | |||
533 | xor ebx,ebx |
||
534 | xor eax,eax |
||
535 | ret |
||
536 | |||
537 | LBA_read: |
||
538 | |||
539 | ; IN: |
||
540 | ; |
||
541 | ; eax = LBA block to read |
||
542 | ; ebx = pointer to FIRST/SECOND/THIRD/FOURTH |
||
543 | ; ecx = abs pointer to return area |
||
544 | |||
545 | cmp [lba_read_enabled],1 |
||
546 | je lbarl1 |
||
547 | mov eax,2 |
||
548 | ret |
||
549 | |||
550 | lbarl1: |
||
551 | |||
63 | halyavin | 552 | call reserve_hd1 |
1 | ha | 553 | |
554 | push eax |
||
555 | push ecx |
||
556 | |||
557 | mov edi,hd_address_table |
||
558 | mov esi,dir1 |
||
559 | mov eax,[ebx] |
||
560 | mov edx,'1 ' |
||
561 | mov ecx,4 |
||
562 | blar0: |
||
563 | cmp eax,[esi] |
||
564 | je blar2 |
||
565 | cmp eax,edx |
||
566 | je blar2 |
||
567 | inc edx |
||
568 | add edi,8 |
||
569 | add esi,11 |
||
570 | dec ecx |
||
571 | jnz blar0 |
||
572 | |||
573 | mov eax,1 |
||
574 | mov ebx,1 |
||
575 | jmp LBA_read_ret |
||
576 | |||
577 | blar2: |
||
578 | mov eax,[edi+0] |
||
579 | mov ebx,[edi+4] |
||
580 | |||
64 | mario79 | 581 | mov [hdbase],eax |
582 | mov [hdid],ebx |
||
583 | |||
1 | ha | 584 | call wait_for_hd_idle |
74 | mario79 | 585 | cmp [hd_error],0 |
586 | jne hd_lba_error |
||
1 | ha | 587 | |
588 | ; eax = hd port |
||
589 | ; ebx = set for primary (0x00) or slave (0x10) |
||
590 | |||
591 | cli |
||
592 | |||
593 | mov edx,eax |
||
594 | inc edx |
||
595 | xor eax,eax |
||
596 | out dx,al |
||
597 | inc edx |
||
598 | inc eax |
||
599 | out dx,al |
||
600 | inc edx |
||
601 | mov eax,[esp+4] |
||
602 | out dx,al |
||
603 | shr eax,8 |
||
604 | inc edx |
||
605 | out dx,al |
||
606 | shr eax,8 |
||
607 | inc edx |
||
608 | out dx,al |
||
609 | shr eax,8 |
||
610 | inc edx |
||
611 | and al,1+2+4+8 |
||
612 | add al,bl |
||
613 | add al,128+64+32 |
||
614 | out dx,al |
||
615 | |||
616 | inc edx |
||
617 | mov al,20h |
||
618 | out dx,al |
||
619 | |||
620 | sti |
||
621 | |||
622 | call wait_for_sector_buffer |
||
74 | mario79 | 623 | cmp [hd_error],0 |
624 | jne hd_lba_error |
||
1 | ha | 625 | |
626 | cli |
||
627 | |||
628 | mov edi,[esp+0] |
||
629 | mov ecx,256 |
||
630 | sub edx,7 |
||
631 | cld |
||
632 | rep insw |
||
633 | |||
634 | sti |
||
635 | |||
636 | xor eax,eax |
||
637 | xor ebx,ebx |
||
638 | |||
639 | LBA_read_ret: |
||
74 | mario79 | 640 | mov [hd_error],0 |
1 | ha | 641 | mov [hd1_status],0 |
642 | add esp,2*4 |
||
643 | |||
644 | ret |
||
645 | |||
646 | |||
647 | expand_pathz: |
||
648 | ; IN: |
||
649 | ; esi = asciiz path & file |
||
650 | ; edi = buffer for path & file name |
||
651 | ; OUT: |
||
652 | ; edi = directory & file : / 11 + / 11 + / 11 - zero terminated |
||
653 | ; ebx = /file name - zero terminated |
||
654 | ; esi = pointer after source |
||
655 | |||
656 | push eax |
||
657 | push ecx |
||
658 | push edi ;[esp+0] |
||
659 | |||
660 | pathz_start: |
||
661 | mov byte [edi],'/' |
||
662 | inc edi |
||
663 | mov al,32 |
||
664 | mov ecx,11 |
||
665 | cld |
||
666 | rep stosb ; clear filename area |
||
667 | sub edi,11 |
||
668 | mov ebx,edi ; start of dir/file name |
||
669 | |||
670 | pathz_new_char: |
||
671 | mov al,[esi] |
||
672 | inc esi |
||
673 | cmp al,0 |
||
674 | je pathz_end |
||
675 | |||
676 | cmp al,'/' |
||
677 | jne pathz_not_path |
||
678 | cmp edi,ebx ; skip first '/' |
||
679 | jz pathz_new_char |
||
680 | lea edi,[ebx+11] ; start of next directory |
||
681 | jmp pathz_start |
||
682 | |||
683 | pathz_not_path: |
||
684 | cmp al,'.' |
||
685 | jne pathz_not_ext |
||
686 | lea edi,[ebx+8] ; start of extension |
||
687 | jmp pathz_new_char |
||
688 | |||
689 | pathz_not_ext: |
||
690 | cmp al,'a' |
||
691 | jb pathz_not_low |
||
692 | cmp al,'z' |
||
693 | ja pathz_not_low |
||
694 | sub al,0x20 ; char to uppercase |
||
695 | |||
696 | pathz_not_low: |
||
697 | mov [edi],al |
||
698 | inc edi |
||
699 | mov eax,[esp+0] ; start_of_dest_path |
||
700 | add eax,512 ; keep maximum path under 512 bytes |
||
701 | cmp edi,eax |
||
702 | jb pathz_new_char |
||
703 | |||
704 | pathz_end: |
||
705 | cmp ebx,edi ; if path end with '/' |
||
706 | jnz pathz_put_zero ; go back 1 level |
||
707 | sub ebx,12 |
||
708 | |||
709 | pathz_put_zero: |
||
710 | mov byte [ebx+11],0 |
||
711 | dec ebx ; include '/' char into file name |
||
712 | pop edi |
||
713 | pop ecx |
||
714 | pop eax |
||
715 | ret |
||
716 | |||
717 | ;******************************************* |
||
718 | ;* string to number |
||
719 | ;* input eax - 4 byte string |
||
720 | ;* output eax - number |
||
721 | ;******************************************* |
||
722 | StringToNumber: |
||
723 | ; ÏÅÐÅÂÎÄ ÑÒÐÎÊÎÂÎÃÎ ×ÈÑËÀ  ×ÈÑËÎÂÎÉ ÂÈÄ |
||
724 | ; Âõîä: |
||
725 | ; EDI - àäðåñ ñòðîêè ñ ÷èñëîì. Êîíåö ÷èñëà îòìå÷åí êîäîì 0Dh |
||
726 | ; Âûõîä: |
||
727 | ; CF - èíäèêàòîð îøèáîê: |
||
728 | ; 0 - îøèáîê íåò; |
||
729 | ; 1 - îøèáêà |
||
730 | ; Åñëè CF=0, òî AX - ÷èñëî. |
||
731 | |||
732 | push bx |
||
733 | push cx |
||
734 | push dx |
||
735 | push edi |
||
736 | mov [partition_string],eax |
||
737 | mov edi,partition_string |
||
738 | xor cx,cx |
||
379 | serge | 739 | i1: |
1 | ha | 740 | mov al,[edi] |
741 | cmp al,32 ;13 |
||
742 | je i_exit |
||
743 | ; cmp al,'0' |
||
744 | ; jb err |
||
745 | ; cmp al,'9' |
||
746 | ; ja err |
||
747 | sub al,48 |
||
748 | shl cx,1 |
||
749 | jc err |
||
750 | mov bx,cx |
||
751 | shl cx,1 |
||
752 | jc err |
||
753 | shl cx,1 |
||
754 | jc err |
||
755 | add cx,bx |
||
756 | jc err |
||
757 | cbw |
||
758 | add cx,ax |
||
759 | jc err |
||
760 | i3: |
||
761 | inc edi |
||
762 | jmp i1 |
||
763 | i_exit: |
||
764 | mov ax,cx |
||
765 | clc |
||
766 | i4: |
||
767 | movzx eax,ax |
||
768 | pop edi |
||
769 | pop dx |
||
770 | pop cx |
||
771 | pop bx |
||
772 | ret |
||
773 | |||
774 | err: |
||
775 | stc |
||
776 | jmp i4 |
||
777 | |||
778 | partition_string: dd 0 |
||
779 | db 32>=>>=> |