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1 | $Revision: 431 $ |
1 | $Revision: 465 $ |
2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
3 | ;; ;; |
3 | ;; ;; |
4 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
4 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
5 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; Distributed under terms of the GNU General Public License ;; |
6 | ;; ;; |
6 | ;; ;; |
7 | ;; FAT12.INC ;; |
7 | ;; FAT12.INC ;; |
8 | ;; (C) 2005 Mario79, License: GPL ;; |
8 | ;; (C) 2005 Mario79, License: GPL ;; |
9 | ;; ;; |
9 | ;; ;; |
10 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
10 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
11 | 11 | ||
12 | n_sector dd 0 ; temporary save for sector value |
12 | n_sector dd 0 ; temporary save for sector value |
13 | flp_status dd 0 |
13 | flp_status dd 0 |
14 | clust_tmp_flp dd 0 ; used by analyze_directory and analyze_directory_to_write |
14 | clust_tmp_flp dd 0 ; used by analyze_directory and analyze_directory_to_write |
15 | path_pointer_flp dd 0 |
15 | path_pointer_flp dd 0 |
16 | pointer_file_name_flp dd 0 |
16 | pointer_file_name_flp dd 0 |
17 | save_root_flag db 0 |
17 | save_root_flag db 0 |
18 | save_flag db 0 |
18 | save_flag db 0 |
19 | root_read db 0 ; 0-necessary to load root, 1-not to load root |
19 | root_read db 0 ; 0-necessary to load root, 1-not to load root |
20 | flp_fat db 0 ; 0-necessary to load fat, 1-not to load fat |
20 | flp_fat db 0 ; 0-necessary to load fat, 1-not to load fat |
21 | flp_number db 0 ; 1- Floppy A, 2-Floppy B |
21 | flp_number db 0 ; 1- Floppy A, 2-Floppy B |
22 | old_track db 0 ; old value track |
22 | old_track db 0 ; old value track |
23 | flp_label rb 15 ; Label and ID of inserted floppy disk |
23 | flp_label rb 15 ; Label and ID of inserted floppy disk |
24 | 24 | ||
25 | reserve_flp: |
25 | reserve_flp: |
26 | 26 | ||
27 | cli |
27 | cli |
28 | cmp [flp_status],0 |
28 | cmp [flp_status],0 |
29 | je reserve_flp_ok |
29 | je reserve_flp_ok |
30 | 30 | ||
31 | sti |
31 | sti |
32 | call change_task |
32 | call change_task |
33 | jmp reserve_flp |
33 | jmp reserve_flp |
34 | 34 | ||
35 | reserve_flp_ok: |
35 | reserve_flp_ok: |
36 | 36 | ||
37 | push eax |
37 | push eax |
38 | mov eax,[CURRENT_TASK] |
38 | mov eax,[CURRENT_TASK] |
39 | shl eax,5 |
39 | shl eax,5 |
40 | mov eax,[eax+CURRENT_TASK+TASKDATA.pid] |
40 | mov eax,[eax+CURRENT_TASK+TASKDATA.pid] |
41 | mov [flp_status],eax |
41 | mov [flp_status],eax |
42 | pop eax |
42 | pop eax |
43 | sti |
43 | sti |
44 | ret |
44 | ret |
45 | 45 | ||
46 | floppy_free_space: |
46 | floppy_free_space: |
47 | ;--------------------------------------------- |
47 | ;--------------------------------------------- |
48 | ; |
48 | ; |
49 | ; returns free space in edi |
49 | ; returns free space in edi |
50 | ; |
50 | ; |
51 | ;--------------------------------------------- |
51 | ;--------------------------------------------- |
52 | push eax ebx ecx |
52 | push eax ebx ecx |
53 | call read_flp_fat |
53 | call read_flp_fat |
54 | cmp [FDC_Status],0 |
54 | cmp [FDC_Status],0 |
55 | jne fdc_status_error_2 |
55 | jne fdc_status_error_2 |
56 | mov eax,0x282004 |
56 | mov eax,0x282004 |
57 | xor edi,edi |
57 | xor edi,edi |
58 | mov ecx,2847 ;1448000/512 |
58 | mov ecx,2847 ;1448000/512 |
59 | rdfs1_1: |
59 | rdfs1_1: |
60 | mov ebx,[eax] |
60 | mov ebx,[eax] |
61 | and ebx,4095 |
61 | and ebx,4095 |
62 | jne rdfs2_1 |
62 | jne rdfs2_1 |
63 | add edi,512 |
63 | add edi,512 |
64 | rdfs2_1: |
64 | rdfs2_1: |
65 | add eax,2 |
65 | add eax,2 |
66 | loop rdfs1_1 |
66 | loop rdfs1_1 |
67 | fdc_status_error_2: |
67 | fdc_status_error_2: |
68 | pop ecx ebx eax |
68 | pop ecx ebx eax |
69 | ret |
69 | ret |
70 | 70 | ||
71 | 71 | ||
72 | 72 | ||
73 | 73 | ||
74 | floppy_fileread: |
74 | floppy_fileread: |
75 | ;---------------------------------------------------------------- |
75 | ;---------------------------------------------------------------- |
76 | ; |
76 | ; |
77 | ; fileread - sys floppy |
77 | ; fileread - sys floppy |
78 | ; |
78 | ; |
79 | ; eax points to filename 11 chars - for root directory |
79 | ; eax points to filename 11 chars - for root directory |
80 | ; ebx first wanted block ; 1+ ; if 0 then set to 1 |
80 | ; ebx first wanted block ; 1+ ; if 0 then set to 1 |
81 | ; ecx number of blocks to read ; 1+ ; if 0 then set to 1 |
81 | ; ecx number of blocks to read ; 1+ ; if 0 then set to 1 |
82 | ; edx mem location to return data |
82 | ; edx mem location to return data |
83 | ; esi length of filename 12*X |
83 | ; esi length of filename 12*X |
84 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
84 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
85 | ; |
85 | ; |
86 | ; ret ebx = size or 0xffffffff file not found |
86 | ; ret ebx = size or 0xffffffff file not found |
87 | ; eax = 0 ok read or other = errormsg |
87 | ; eax = 0 ok read or other = errormsg |
88 | ; 10 = access denied |
88 | ; 10 = access denied |
89 | ;-------------------------------------------------------------- |
89 | ;-------------------------------------------------------------- |
90 | 90 | ||
91 | mov [save_flag],0 |
91 | mov [save_flag],0 |
92 | mov [path_pointer_flp],edi |
92 | mov [path_pointer_flp],edi |
93 | cmp esi,0 ; return ramdisk root |
93 | cmp esi,0 ; return ramdisk root |
94 | jne fr_noroot_1 |
94 | jne fr_noroot_1 |
95 | cmp ebx,224/16 |
95 | cmp ebx,224/16 |
96 | jbe fr_do_1 |
96 | jbe fr_do_1 |
97 | mov eax,5 |
97 | mov eax,5 |
98 | mov ebx,0 |
98 | mov ebx,0 |
99 | mov [flp_status],0 |
99 | mov [flp_status],0 |
100 | ret |
100 | ret |
101 | 101 | ||
102 | fr_do_1: |
102 | fr_do_1: |
103 | push ebx ecx edx |
103 | push ebx ecx edx |
104 | call read_flp_root |
104 | call read_flp_root |
105 | pop edx ecx ebx |
105 | pop edx ecx ebx |
106 | cmp [FDC_Status],0 |
106 | cmp [FDC_Status],0 |
107 | jne fdc_status_error_1 |
107 | jne fdc_status_error_1 |
108 | mov edi,edx |
108 | mov edi,edx |
109 | dec ebx |
109 | dec ebx |
110 | shl ebx,9 |
110 | shl ebx,9 |
111 | mov esi,FLOPPY_BUFF |
111 | mov esi,FLOPPY_BUFF |
112 | add esi,ebx |
112 | add esi,ebx |
113 | shl ecx,9 |
113 | shl ecx,9 |
114 | cld |
114 | cld |
115 | rep movsb |
115 | rep movsb |
116 | mov eax,0 ; ok read |
116 | mov eax,0 ; ok read |
117 | mov ebx,0 |
117 | mov ebx,0 |
118 | mov [flp_status],0 |
118 | mov [flp_status],0 |
119 | ret |
119 | ret |
120 | fdc_status_error_1: |
120 | fdc_status_error_1: |
121 | mov [flp_status],0 |
121 | mov [flp_status],0 |
122 | mov eax,10 |
122 | mov eax,10 |
123 | mov ebx,-1 |
123 | mov ebx,-1 |
124 | ret |
124 | ret |
125 | 125 | ||
126 | fr_noroot_1: |
126 | fr_noroot_1: |
127 | sub esp,32 |
127 | sub esp,32 |
128 | call expand_filename |
128 | call expand_filename |
129 | frfloppy_1: |
129 | frfloppy_1: |
130 | cmp ebx,0 |
130 | cmp ebx,0 |
131 | jne frfl5_1 |
131 | jne frfl5_1 |
132 | mov ebx,1 |
132 | mov ebx,1 |
133 | frfl5_1: |
133 | frfl5_1: |
134 | cmp ecx,0 |
134 | cmp ecx,0 |
135 | jne frfl6_1 |
135 | jne frfl6_1 |
136 | mov ecx,1 |
136 | mov ecx,1 |
137 | frfl6_1: |
137 | frfl6_1: |
138 | dec ebx |
138 | dec ebx |
139 | push eax |
139 | push eax |
140 | push eax ebx ecx edx esi edi |
140 | push eax ebx ecx edx esi edi |
141 | call read_flp_fat |
141 | call read_flp_fat |
142 | cmp [FDC_Status],0 |
142 | cmp [FDC_Status],0 |
143 | jne fdc_status_error_3_1 |
143 | jne fdc_status_error_3_1 |
144 | mov [FDD_Track],0 ; Öèëèíäð |
144 | mov [FDD_Track],0 ; Öèëèíäð |
145 | mov [FDD_Head],1 ; Ñòîðîíà |
145 | mov [FDD_Head],1 ; Ñòîðîíà |
146 | mov [FDD_Sector],2 ; Ñåêòîð |
146 | mov [FDD_Sector],2 ; Ñåêòîð |
147 | call SeekTrack |
147 | call SeekTrack |
148 | mov dh,14 |
148 | mov dh,14 |
149 | l.20_1: |
149 | l.20_1: |
150 | call ReadSectWithRetr |
150 | call ReadSectWithRetr |
151 | cmp [FDC_Status],0 |
151 | cmp [FDC_Status],0 |
152 | jne fdc_status_error_3_1 |
152 | jne fdc_status_error_3_1 |
153 | mov dl,16 |
153 | mov dl,16 |
154 | mov edi,FDD_BUFF |
154 | mov edi,FDD_BUFF |
155 | inc [FDD_Sector] |
155 | inc [FDD_Sector] |
156 | l.21_1: |
156 | l.21_1: |
157 | mov esi,eax ;Name of file we want |
157 | mov esi,eax ;Name of file we want |
158 | mov ecx,11 |
158 | mov ecx,11 |
159 | cld |
159 | cld |
160 | rep cmpsb ;Found the file? |
160 | rep cmpsb ;Found the file? |
161 | je fifound_1 ;Yes |
161 | je fifound_1 ;Yes |
162 | add ecx,21 |
162 | add ecx,21 |
163 | add edi, ecx ;Advance to next entry |
163 | add edi, ecx ;Advance to next entry |
164 | dec dl |
164 | dec dl |
165 | cmp dl,0 |
165 | cmp dl,0 |
166 | jne l.21_1 |
166 | jne l.21_1 |
167 | dec dh |
167 | dec dh |
168 | cmp dh,0 |
168 | cmp dh,0 |
169 | jne l.20_1 |
169 | jne l.20_1 |
170 | fdc_status_error_3: |
170 | fdc_status_error_3: |
171 | mov eax,5 ; file not found ? |
171 | mov eax,5 ; file not found ? |
172 | mov ebx,-1 |
172 | mov ebx,-1 |
173 | add esp,32+28 |
173 | add esp,32+28 |
174 | mov [flp_status],0 |
174 | mov [flp_status],0 |
175 | ret |
175 | ret |
176 | fdc_status_error_3_2: |
176 | fdc_status_error_3_2: |
177 | cmp [FDC_Status],0 |
177 | cmp [FDC_Status],0 |
178 | je fdc_status_error_3 |
178 | je fdc_status_error_3 |
179 | fdc_status_error_3_1: |
179 | fdc_status_error_3_1: |
180 | add esp,32+28 |
180 | add esp,32+28 |
181 | jmp fdc_status_error_1 |
181 | jmp fdc_status_error_1 |
182 | 182 | ||
183 | fifound_1: |
183 | fifound_1: |
184 | mov eax,[path_pointer_flp] |
184 | mov eax,[path_pointer_flp] |
185 | cmp [eax+36],byte 0 |
185 | cmp [eax+36],byte 0 |
186 | je fifound_2 |
186 | je fifound_2 |
187 | add edi,0xf |
187 | add edi,0xf |
188 | mov eax,[edi] |
188 | mov eax,[edi] |
189 | and eax,65535 |
189 | and eax,65535 |
190 | mov ebx,[path_pointer_flp] |
190 | mov ebx,[path_pointer_flp] |
191 | add ebx,36 |
191 | add ebx,36 |
192 | call get_cluster_of_a_path_flp |
192 | call get_cluster_of_a_path_flp |
193 | jc fdc_status_error_3_2 |
193 | jc fdc_status_error_3_2 |
194 | mov ebx,[ebx-11+28] ;file size |
194 | mov ebx,[ebx-11+28] ;file size |
195 | mov [esp+20],ebx |
195 | mov [esp+20],ebx |
196 | mov [esp+24],ebx |
196 | mov [esp+24],ebx |
197 | jmp fifound_3 |
197 | jmp fifound_3 |
198 | fifound_2: |
198 | fifound_2: |
199 | mov ebx,[edi-11+28] ;file size |
199 | mov ebx,[edi-11+28] ;file size |
200 | mov [esp+20],ebx |
200 | mov [esp+20],ebx |
201 | mov [esp+24],ebx |
201 | mov [esp+24],ebx |
202 | add edi,0xf |
202 | add edi,0xf |
203 | mov eax,[edi] |
203 | mov eax,[edi] |
204 | fifound_3: |
204 | fifound_3: |
205 | and eax,65535 |
205 | and eax,65535 |
206 | mov [n_sector],eax ;eax=cluster |
206 | mov [n_sector],eax ;eax=cluster |
207 | frnew_1: |
207 | frnew_1: |
208 | add eax,31 ;bootsector+2*fat+filenames |
208 | add eax,31 ;bootsector+2*fat+filenames |
209 | cmp [esp+16],dword 0 ; wanted cluster ? |
209 | cmp [esp+16],dword 0 ; wanted cluster ? |
210 | jne frfl7_1 |
210 | jne frfl7_1 |
211 | call read_chs_sector |
211 | call read_chs_sector |
212 | cmp [FDC_Status],0 |
212 | cmp [FDC_Status],0 |
213 | jne fdc_status_error_5 |
213 | jne fdc_status_error_5 |
214 | mov edi,[esp+8] |
214 | mov edi,[esp+8] |
215 | call give_back_application_data_1 |
215 | call give_back_application_data_1 |
216 | add [esp+8],dword 512 |
216 | add [esp+8],dword 512 |
217 | dec dword [esp+12] ; last wanted cluster ? |
217 | dec dword [esp+12] ; last wanted cluster ? |
218 | cmp [esp+12],dword 0 |
218 | cmp [esp+12],dword 0 |
219 | je frnoread_1 |
219 | je frnoread_1 |
220 | jmp frfl8_1 |
220 | jmp frfl8_1 |
221 | frfl7_1: |
221 | frfl7_1: |
222 | dec dword [esp+16] |
222 | dec dword [esp+16] |
223 | frfl8_1: |
223 | frfl8_1: |
224 | mov edi,[n_sector] |
224 | mov edi,[n_sector] |
225 | shl edi,1 ;find next cluster from FAT |
225 | shl edi,1 ;find next cluster from FAT |
226 | add edi,FLOPPY_FAT |
226 | add edi,FLOPPY_FAT |
227 | mov eax,[edi] |
227 | mov eax,[edi] |
228 | and eax,4095 |
228 | and eax,4095 |
229 | mov edi,eax |
229 | mov edi,eax |
230 | mov [n_sector],edi |
230 | mov [n_sector],edi |
231 | cmp edi,4095 ;eof - cluster |
231 | cmp edi,4095 ;eof - cluster |
232 | jz frnoread2_1 |
232 | jz frnoread2_1 |
233 | cmp [esp+24],dword 512 ;eof - size |
233 | cmp [esp+24],dword 512 ;eof - size |
234 | jb frnoread_1 |
234 | jb frnoread_1 |
235 | sub [esp+24],dword 512 |
235 | sub [esp+24],dword 512 |
236 | jmp frnew_1 |
236 | jmp frnew_1 |
237 | 237 | ||
238 | read_chs_sector: |
238 | read_chs_sector: |
239 | call calculate_chs |
239 | call calculate_chs |
240 | call ReadSectWithRetr |
240 | call ReadSectWithRetr |
241 | ret |
241 | ret |
242 | 242 | ||
243 | frnoread2_1: |
243 | frnoread2_1: |
244 | cmp [esp+16],dword 0 ; eof without read ? |
244 | cmp [esp+16],dword 0 ; eof without read ? |
245 | je frnoread_1 |
245 | je frnoread_1 |
246 | mov [fdc_irq_func],fdc_null |
246 | mov [fdc_irq_func],fdc_null |
247 | pop edi esi edx ecx |
247 | pop edi esi edx ecx |
248 | add esp,4 |
248 | add esp,4 |
249 | pop ebx ; ebx <- eax : size of file |
249 | pop ebx ; ebx <- eax : size of file |
250 | add esp,36 |
250 | add esp,36 |
251 | mov eax,6 ; end of file |
251 | mov eax,6 ; end of file |
252 | mov [flp_status],0 |
252 | mov [flp_status],0 |
253 | ret |
253 | ret |
254 | 254 | ||
255 | frnoread_1: |
255 | frnoread_1: |
256 | pop edi esi edx ecx |
256 | pop edi esi edx ecx |
257 | add esp,4 |
257 | add esp,4 |
258 | pop ebx ; ebx <- eax : size of file |
258 | pop ebx ; ebx <- eax : size of file |
259 | add esp,36 |
259 | add esp,36 |
260 | mov eax,0 |
260 | mov eax,0 |
261 | mov [flp_status],0 |
261 | mov [flp_status],0 |
262 | ret |
262 | ret |
263 | 263 | ||
264 | fdc_status_error_5: |
264 | fdc_status_error_5: |
265 | pop edi esi edx ecx |
265 | pop edi esi edx ecx |
266 | add esp,4 |
266 | add esp,4 |
267 | pop ebx ; ebx <- eax : size of file |
267 | pop ebx ; ebx <- eax : size of file |
268 | add esp,36 |
268 | add esp,36 |
269 | jmp fdc_status_error_1 |
269 | jmp fdc_status_error_1 |
270 | 270 | ||
271 | read_flp_root: |
271 | read_flp_root: |
272 | pusha |
272 | pusha |
273 | call check_label |
273 | call check_label |
274 | cmp [FDC_Status],0 |
274 | cmp [FDC_Status],0 |
275 | jne unnecessary_root_read |
275 | jne unnecessary_root_read |
276 | cmp [root_read],1 |
276 | cmp [root_read],1 |
277 | je unnecessary_root_read |
277 | je unnecessary_root_read |
278 | mov [FDD_Track],0 ; Öèëèíäð |
278 | mov [FDD_Track],0 ; Öèëèíäð |
279 | mov [FDD_Head],1 ; Ñòîðîíà |
279 | mov [FDD_Head],1 ; Ñòîðîíà |
280 | mov [FDD_Sector],2 ; Ñåêòîð |
280 | mov [FDD_Sector],2 ; Ñåêòîð |
281 | mov edi,FLOPPY_BUFF |
281 | mov edi,FLOPPY_BUFF |
282 | call SeekTrack |
282 | call SeekTrack |
283 | read_flp_root_1: |
283 | read_flp_root_1: |
284 | call ReadSectWithRetr |
284 | call ReadSectWithRetr |
285 | cmp [FDC_Status],0 |
285 | cmp [FDC_Status],0 |
286 | jne unnecessary_root_read |
286 | jne unnecessary_root_read |
287 | push edi |
287 | push edi |
288 | call give_back_application_data_1 |
288 | call give_back_application_data_1 |
289 | pop edi |
289 | pop edi |
290 | add edi,512 |
290 | add edi,512 |
291 | inc [FDD_Sector] |
291 | inc [FDD_Sector] |
292 | cmp [FDD_Sector],16 |
292 | cmp [FDD_Sector],16 |
293 | jne read_flp_root_1 |
293 | jne read_flp_root_1 |
294 | mov [root_read],1 |
294 | mov [root_read],1 |
295 | unnecessary_root_read: |
295 | unnecessary_root_read: |
296 | popa |
296 | popa |
297 | ret |
297 | ret |
298 | 298 | ||
299 | 299 | ||
300 | read_flp_fat: |
300 | read_flp_fat: |
301 | pusha |
301 | pusha |
302 | call check_label |
302 | call check_label |
303 | cmp [FDC_Status],0 |
303 | cmp [FDC_Status],0 |
304 | jne unnecessary_flp_fat |
304 | jne unnecessary_flp_fat |
305 | cmp [flp_fat],1 |
305 | cmp [flp_fat],1 |
306 | je unnecessary_flp_fat |
306 | je unnecessary_flp_fat |
307 | mov [FDD_Track],0 ; Öèëèíäð |
307 | mov [FDD_Track],0 ; Öèëèíäð |
308 | mov [FDD_Head],0 ; Ñòîðîíà |
308 | mov [FDD_Head],0 ; Ñòîðîíà |
309 | mov [FDD_Sector],2 ; Ñåêòîð |
309 | mov [FDD_Sector],2 ; Ñåêòîð |
310 | mov edi,FLOPPY_BUFF |
310 | mov edi,FLOPPY_BUFF |
311 | call SeekTrack |
311 | call SeekTrack |
312 | read_flp_fat_1: |
312 | read_flp_fat_1: |
313 | call ReadSectWithRetr |
313 | call ReadSectWithRetr |
314 | cmp [FDC_Status],0 |
314 | cmp [FDC_Status],0 |
315 | jne unnecessary_flp_fat |
315 | jne unnecessary_flp_fat |
316 | push edi |
316 | push edi |
317 | call give_back_application_data_1 |
317 | call give_back_application_data_1 |
318 | pop edi |
318 | pop edi |
319 | add edi,512 |
319 | add edi,512 |
320 | inc [FDD_Sector] |
320 | inc [FDD_Sector] |
321 | cmp [FDD_Sector],19 |
321 | cmp [FDD_Sector],19 |
322 | jne read_flp_fat_1 |
322 | jne read_flp_fat_1 |
323 | mov [FDD_Sector],1 |
323 | mov [FDD_Sector],1 |
324 | mov [FDD_Head],1 |
324 | mov [FDD_Head],1 |
325 | call ReadSectWithRetr |
325 | call ReadSectWithRetr |
326 | cmp [FDC_Status],0 |
326 | cmp [FDC_Status],0 |
327 | jne unnecessary_flp_fat |
327 | jne unnecessary_flp_fat |
328 | call give_back_application_data_1 |
328 | call give_back_application_data_1 |
329 | call calculatefatchain_flp |
329 | call calculatefatchain_flp |
330 | mov [root_read],0 |
330 | mov [root_read],0 |
331 | mov [flp_fat],1 |
331 | mov [flp_fat],1 |
332 | unnecessary_flp_fat: |
332 | unnecessary_flp_fat: |
333 | popa |
333 | popa |
334 | ret |
334 | ret |
335 | 335 | ||
336 | calculatefatchain_flp: |
336 | calculatefatchain_flp: |
337 | pushad |
337 | pushad |
338 | 338 | ||
339 | mov esi,FLOPPY_BUFF |
339 | mov esi,FLOPPY_BUFF |
340 | mov edi,FLOPPY_FAT |
340 | mov edi,FLOPPY_FAT |
341 | 341 | ||
342 | fcnew_1: |
342 | fcnew_1: |
343 | mov eax,dword [esi] |
343 | mov eax,dword [esi] |
344 | mov ebx,dword [esi+4] |
344 | mov ebx,dword [esi+4] |
345 | mov ecx,dword [esi+8] |
345 | mov ecx,dword [esi+8] |
346 | mov edx,ecx |
346 | mov edx,ecx |
347 | shr edx,4 ;8 ok |
347 | shr edx,4 ;8 ok |
348 | shr dx,4 ;7 ok |
348 | shr dx,4 ;7 ok |
349 | xor ch,ch |
349 | xor ch,ch |
350 | shld ecx,ebx,20 ;6 ok |
350 | shld ecx,ebx,20 ;6 ok |
351 | shr cx,4 ;5 ok |
351 | shr cx,4 ;5 ok |
352 | shld ebx,eax,12 |
352 | shld ebx,eax,12 |
353 | and ebx,0x0fffffff ;4 ok |
353 | and ebx,0x0fffffff ;4 ok |
354 | shr bx,4 ;3 ok |
354 | shr bx,4 ;3 ok |
355 | shl eax,4 |
355 | shl eax,4 |
356 | and eax,0x0fffffff ;2 ok |
356 | and eax,0x0fffffff ;2 ok |
357 | shr ax,4 ;1 ok |
357 | shr ax,4 ;1 ok |
358 | mov dword [edi],eax |
358 | mov dword [edi],eax |
359 | add edi,4 |
359 | add edi,4 |
360 | mov dword [edi],ebx |
360 | mov dword [edi],ebx |
361 | add edi,4 |
361 | add edi,4 |
362 | mov dword [edi],ecx |
362 | mov dword [edi],ecx |
363 | add edi,4 |
363 | add edi,4 |
364 | mov dword [edi],edx |
364 | mov dword [edi],edx |
365 | add edi,4 |
365 | add edi,4 |
366 | add esi,12 |
366 | add esi,12 |
367 | 367 | ||
368 | cmp edi,FLOPPY_FAT+2856*2 ;2849 clusters |
368 | cmp edi,FLOPPY_FAT+2856*2 ;2849 clusters |
369 | jnz fcnew_1 |
369 | jnz fcnew_1 |
370 | 370 | ||
371 | popad |
371 | popad |
372 | ret |
372 | ret |
373 | 373 | ||
374 | check_label: |
374 | check_label: |
375 | pushad |
375 | pushad |
376 | mov [FDD_Track],0 ; Öèëèíäð |
376 | mov [FDD_Track],0 ; Öèëèíäð |
377 | mov [FDD_Head],0 ; Ñòîðîíà |
377 | mov [FDD_Head],0 ; Ñòîðîíà |
378 | mov [FDD_Sector],1 ; Ñåêòîð |
378 | mov [FDD_Sector],1 ; Ñåêòîð |
379 | call SetUserInterrupts |
379 | call SetUserInterrupts |
380 | call FDDMotorON |
380 | call FDDMotorON |
381 | call RecalibrateFDD |
381 | call RecalibrateFDD |
382 | cmp [FDC_Status],0 |
382 | cmp [FDC_Status],0 |
383 | jne fdc_status_error |
383 | jne fdc_status_error |
384 | call SeekTrack |
384 | call SeekTrack |
385 | cmp [FDC_Status],0 |
385 | cmp [FDC_Status],0 |
386 | jne fdc_status_error |
386 | jne fdc_status_error |
387 | call ReadSectWithRetr |
387 | call ReadSectWithRetr |
388 | cmp [FDC_Status],0 |
388 | cmp [FDC_Status],0 |
389 | jne fdc_status_error |
389 | jne fdc_status_error |
390 | mov esi,flp_label |
390 | mov esi,flp_label |
391 | mov edi,FDD_BUFF+39 |
391 | mov edi,FDD_BUFF+39 |
392 | mov ecx,15 |
392 | mov ecx,15 |
393 | cld |
393 | cld |
394 | rep cmpsb |
394 | rep cmpsb |
395 | je same_label |
395 | je same_label |
396 | mov [root_read],0 |
396 | mov [root_read],0 |
397 | mov [flp_fat],0 |
397 | mov [flp_fat],0 |
398 | same_label: |
398 | same_label: |
399 | mov esi,FDD_BUFF+39 |
399 | mov esi,FDD_BUFF+39 |
400 | mov edi,flp_label |
400 | mov edi,flp_label |
401 | mov ecx,15 |
401 | mov ecx,15 |
402 | cld |
402 | cld |
403 | rep movsb |
403 | rep movsb |
404 | popad |
404 | popad |
405 | ret |
405 | ret |
406 | fdc_status_error: |
406 | fdc_status_error: |
407 | popad |
407 | popad |
408 | ret |
408 | ret |
409 | 409 | ||
410 | save_flp_root: |
410 | save_flp_root: |
411 | pusha |
411 | pusha |
412 | call check_label |
412 | call check_label |
413 | cmp [FDC_Status],0 |
413 | cmp [FDC_Status],0 |
414 | jne unnecessary_root_save |
414 | jne unnecessary_root_save |
415 | cmp [root_read],0 |
415 | cmp [root_read],0 |
416 | je unnecessary_root_save |
416 | je unnecessary_root_save |
417 | mov [FDD_Track],0 ; Öèëèíäð |
417 | mov [FDD_Track],0 ; Öèëèíäð |
418 | mov [FDD_Head],1 ; Ñòîðîíà |
418 | mov [FDD_Head],1 ; Ñòîðîíà |
419 | mov [FDD_Sector],2 ; Ñåêòîð |
419 | mov [FDD_Sector],2 ; Ñåêòîð |
420 | mov esi,FLOPPY_BUFF |
420 | mov esi,FLOPPY_BUFF |
421 | call SeekTrack |
421 | call SeekTrack |
422 | save_flp_root_1: |
422 | save_flp_root_1: |
423 | push esi |
423 | push esi |
424 | call take_data_from_application_1 |
424 | call take_data_from_application_1 |
425 | pop esi |
425 | pop esi |
426 | add esi,512 |
426 | add esi,512 |
427 | call WriteSectWithRetr |
427 | call WriteSectWithRetr |
428 | cmp [FDC_Status],0 |
428 | cmp [FDC_Status],0 |
429 | jne unnecessary_root_save |
429 | jne unnecessary_root_save |
430 | inc [FDD_Sector] |
430 | inc [FDD_Sector] |
431 | cmp [FDD_Sector],16 |
431 | cmp [FDD_Sector],16 |
432 | jne save_flp_root_1 |
432 | jne save_flp_root_1 |
433 | unnecessary_root_save: |
433 | unnecessary_root_save: |
434 | mov [fdc_irq_func],fdc_null |
434 | mov [fdc_irq_func],fdc_null |
435 | popa |
435 | popa |
436 | ret |
436 | ret |
437 | 437 | ||
438 | save_flp_fat: |
438 | save_flp_fat: |
439 | pusha |
439 | pusha |
440 | call check_label |
440 | call check_label |
441 | cmp [FDC_Status],0 |
441 | cmp [FDC_Status],0 |
442 | jne unnecessary_flp_fat_save |
442 | jne unnecessary_flp_fat_save |
443 | cmp [flp_fat],0 |
443 | cmp [flp_fat],0 |
444 | je unnecessary_flp_fat_save |
444 | je unnecessary_flp_fat_save |
445 | call restorefatchain_flp |
445 | call restorefatchain_flp |
446 | mov [FDD_Track],0 ; Öèëèíäð |
446 | mov [FDD_Track],0 ; Öèëèíäð |
447 | mov [FDD_Head],0 ; Ñòîðîíà |
447 | mov [FDD_Head],0 ; Ñòîðîíà |
448 | mov [FDD_Sector],2 ; Ñåêòîð |
448 | mov [FDD_Sector],2 ; Ñåêòîð |
449 | mov esi,FLOPPY_BUFF |
449 | mov esi,FLOPPY_BUFF |
450 | call SeekTrack |
450 | call SeekTrack |
451 | save_flp_fat_1: |
451 | save_flp_fat_1: |
452 | push esi |
452 | push esi |
453 | call take_data_from_application_1 |
453 | call take_data_from_application_1 |
454 | pop esi |
454 | pop esi |
455 | add esi,512 |
455 | add esi,512 |
456 | call WriteSectWithRetr |
456 | call WriteSectWithRetr |
457 | cmp [FDC_Status],0 |
457 | cmp [FDC_Status],0 |
458 | jne unnecessary_flp_fat_save |
458 | jne unnecessary_flp_fat_save |
459 | inc [FDD_Sector] |
459 | inc [FDD_Sector] |
460 | cmp [FDD_Sector],19 |
460 | cmp [FDD_Sector],19 |
461 | jne save_flp_fat_1 |
461 | jne save_flp_fat_1 |
462 | mov [FDD_Sector],1 |
462 | mov [FDD_Sector],1 |
463 | mov [FDD_Head],1 |
463 | mov [FDD_Head],1 |
464 | call take_data_from_application_1 |
464 | call take_data_from_application_1 |
465 | call WriteSectWithRetr |
465 | call WriteSectWithRetr |
466 | cmp [FDC_Status],0 |
466 | cmp [FDC_Status],0 |
467 | jne unnecessary_flp_fat_save |
467 | jne unnecessary_flp_fat_save |
468 | mov [root_read],0 |
468 | mov [root_read],0 |
469 | unnecessary_flp_fat_save: |
469 | unnecessary_flp_fat_save: |
470 | mov [fdc_irq_func],fdc_null |
470 | mov [fdc_irq_func],fdc_null |
471 | popa |
471 | popa |
472 | ret |
472 | ret |
473 | 473 | ||
474 | 474 | ||
475 | restorefatchain_flp: ; restore fat chain |
475 | restorefatchain_flp: ; restore fat chain |
476 | pushad |
476 | pushad |
477 | 477 | ||
478 | mov esi,FLOPPY_FAT |
478 | mov esi,FLOPPY_FAT |
479 | mov edi,FLOPPY_BUFF |
479 | mov edi,FLOPPY_BUFF |
480 | 480 | ||
481 | fcnew2_1: |
481 | fcnew2_1: |
482 | mov eax,dword [esi] |
482 | mov eax,dword [esi] |
483 | mov ebx,dword [esi+4] |
483 | mov ebx,dword [esi+4] |
484 | shl ax,4 |
484 | shl ax,4 |
485 | shl eax,4 |
485 | shl eax,4 |
486 | shl bx,4 |
486 | shl bx,4 |
487 | shr ebx,4 |
487 | shr ebx,4 |
488 | shrd eax,ebx,8 |
488 | shrd eax,ebx,8 |
489 | shr ebx,8 |
489 | shr ebx,8 |
490 | mov dword [edi],eax |
490 | mov dword [edi],eax |
491 | add edi,4 |
491 | add edi,4 |
492 | mov word [edi],bx |
492 | mov word [edi],bx |
493 | add edi,2 |
493 | add edi,2 |
494 | add esi,8 |
494 | add esi,8 |
495 | 495 | ||
496 | cmp edi,FLOPPY_BUFF+0x1200 ;4274 bytes - all used FAT |
496 | cmp edi,FLOPPY_BUFF+0x1200 ;4274 bytes - all used FAT |
497 | jb fcnew2_1 |
497 | jb fcnew2_1 |
498 | 498 | ||
499 | mov esi,FLOPPY_BUFF ; duplicate fat chain |
499 | mov esi,FLOPPY_BUFF ; duplicate fat chain |
500 | mov edi,FLOPPY_BUFF+0x1200 |
500 | mov edi,FLOPPY_BUFF+0x1200 |
501 | mov ecx,0x1200/4 |
501 | mov ecx,0x1200/4 |
502 | cld |
502 | cld |
503 | rep movsd |
503 | rep movsd |
504 | 504 | ||
505 | popad |
505 | popad |
506 | ret |
506 | ret |
507 | 507 | ||
508 | 508 | ||
509 | floppy_filedelete: |
509 | floppy_filedelete: |
510 | ;-------------------------------------------- |
510 | ;-------------------------------------------- |
511 | ; |
511 | ; |
512 | ; filedelete - sys floppy |
512 | ; filedelete - sys floppy |
513 | ; in: |
513 | ; in: |
514 | ; eax - filename 11 chars - for root directory |
514 | ; eax - filename 11 chars - for root directory |
515 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
515 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
516 | ; |
516 | ; |
517 | ; out: |
517 | ; out: |
518 | ; eax - 0 = successful, 1 = file not found, 10 = access denied |
518 | ; eax - 0 = successful, 1 = file not found, 10 = access denied |
519 | ; |
519 | ; |
520 | ;-------------------------------------------- |
520 | ;-------------------------------------------- |
521 | mov [path_pointer_flp],edi |
521 | mov [path_pointer_flp],edi |
522 | mov [save_flag],0 |
522 | mov [save_flag],0 |
523 | mov ebp,1 ; file not found as default |
523 | mov ebp,1 ; file not found as default |
524 | filedelete_newtry_1: |
524 | filedelete_newtry_1: |
525 | sub esp,32 |
525 | sub esp,32 |
526 | call expand_filename |
526 | call expand_filename |
527 | push eax ebx ecx edx esi edi |
527 | push eax ebx ecx edx esi edi |
528 | call read_flp_fat |
528 | call read_flp_fat |
529 | cmp [FDC_Status],0 |
529 | cmp [FDC_Status],0 |
530 | jne frnoreadd_1 |
530 | jne frnoreadd_1 |
531 | mov [FDD_Track],0 ; Öèëèíäð |
531 | mov [FDD_Track],0 ; Öèëèíäð |
532 | mov [FDD_Head],1 ; Ñòîðîíà |
532 | mov [FDD_Head],1 ; Ñòîðîíà |
533 | mov [FDD_Sector],2 ; Ñåêòîð |
533 | mov [FDD_Sector],2 ; Ñåêòîð |
534 | call SeekTrack |
534 | call SeekTrack |
535 | mov dh,14 |
535 | mov dh,14 |
536 | l.20_2: |
536 | l.20_2: |
537 | call ReadSectWithRetr |
537 | call ReadSectWithRetr |
538 | cmp [FDC_Status],0 |
538 | cmp [FDC_Status],0 |
539 | jne fdc_status_error_4 |
539 | jne fdc_status_error_4 |
540 | mov dl,16 |
540 | mov dl,16 |
541 | mov edi,FDD_BUFF |
541 | mov edi,FDD_BUFF |
542 | inc [FDD_Sector] |
542 | inc [FDD_Sector] |
543 | l.21_2: |
543 | l.21_2: |
544 | mov esi,eax ;Name of file we want |
544 | mov esi,eax ;Name of file we want |
545 | mov ecx,11 |
545 | mov ecx,11 |
546 | cld |
546 | cld |
547 | rep cmpsb ;Found the file? |
547 | rep cmpsb ;Found the file? |
548 | je fifoundd_1 ;Yes |
548 | je fifoundd_1 ;Yes |
549 | add ecx,21 |
549 | add ecx,21 |
550 | add edi, ecx ;Advance to next entry |
550 | add edi, ecx ;Advance to next entry |
551 | dec dl |
551 | dec dl |
552 | jne l.21_2 |
552 | jne l.21_2 |
553 | dec dh |
553 | dec dh |
554 | jne l.20_2 |
554 | jne l.20_2 |
555 | jmp frnoreadd_1 |
555 | jmp frnoreadd_1 |
556 | 556 | ||
557 | fdc_status_error_4: |
557 | fdc_status_error_4: |
558 | pop edi esi edx ecx ebx eax |
558 | pop edi esi edx ecx ebx eax |
559 | add esp,32 |
559 | add esp,32 |
560 | jmp fdc_status_error_1 |
560 | jmp fdc_status_error_1 |
561 | 561 | ||
562 | fifoundd_1: |
562 | fifoundd_1: |
563 | mov eax,[path_pointer_flp] |
563 | mov eax,[path_pointer_flp] |
564 | cmp [eax+36],byte 0 |
564 | cmp [eax+36],byte 0 |
565 | je fifoundd_2 |
565 | je fifoundd_2 |
566 | movzx eax, word [edi+0xf] |
566 | movzx eax, word [edi+0xf] |
567 | mov ebx,[path_pointer_flp] |
567 | mov ebx,[path_pointer_flp] |
568 | add ebx,36 |
568 | add ebx,36 |
569 | call get_cluster_of_a_path_flp |
569 | call get_cluster_of_a_path_flp |
570 | jc frnoreadd_1_1 |
570 | jc frnoreadd_1_1 |
571 | mov edi,ebx |
571 | mov edi,ebx |
572 | add edi,11 |
572 | add edi,11 |
573 | jmp fifoundd_2_1 |
573 | jmp fifoundd_2_1 |
574 | fifoundd_2: |
574 | fifoundd_2: |
575 | dec [FDD_Sector] |
575 | dec [FDD_Sector] |
576 | fifoundd_2_1: |
576 | fifoundd_2_1: |
577 | mov [edi-11],byte 0xE5 ;mark filename deleted |
577 | mov [edi-11],byte 0xE5 ;mark filename deleted |
578 | movzx edi, word [edi+0xf] ;edi = cluster |
578 | movzx edi, word [edi+0xf] ;edi = cluster |
579 | frnewd_1: |
579 | frnewd_1: |
580 | shl edi,1 ;find next cluster from FAT |
580 | shl edi,1 ;find next cluster from FAT |
581 | add edi,FLOPPY_FAT |
581 | add edi,FLOPPY_FAT |
582 | mov eax,[edi] |
582 | mov eax,[edi] |
583 | mov [edi],word 0x0 ;clear fat chain cluster |
583 | mov [edi],word 0x0 ;clear fat chain cluster |
584 | and eax,4095 |
584 | and eax,4095 |
585 | mov edi,eax |
585 | mov edi,eax |
586 | cmp edi,dword 4095 ;last cluster ? |
586 | cmp edi,dword 4095 ;last cluster ? |
587 | jz frnoreadd2_1 |
587 | jz frnoreadd2_1 |
588 | jmp frnewd_1 |
588 | jmp frnewd_1 |
589 | 589 | ||
590 | frnoreadd2_1: |
590 | frnoreadd2_1: |
591 | call WriteSectWithRetr |
591 | call WriteSectWithRetr |
592 | cmp [FDC_Status],0 |
592 | cmp [FDC_Status],0 |
593 | jne fdc_status_error_4 |
593 | jne fdc_status_error_4 |
594 | call save_flp_fat |
594 | call save_flp_fat |
595 | cmp [FDC_Status],0 |
595 | cmp [FDC_Status],0 |
596 | jne fdc_status_error_4 |
596 | jne fdc_status_error_4 |
597 | ; pop edi esi edx ecx ebx eax |
597 | ; pop edi esi edx ecx ebx eax |
598 | ; add esp,32 |
598 | ; add esp,32 |
599 | mov ebp,0 ; file found |
599 | mov ebp,0 ; file found |
600 | ; jmp filedelete_newtry_1 |
600 | ; jmp filedelete_newtry_1 |
601 | jmp frnoreadd_1 |
601 | jmp frnoreadd_1 |
602 | 602 | ||
603 | frnoreadd_1_1: |
603 | frnoreadd_1_1: |
604 | cmp [FDC_Status],0 |
604 | cmp [FDC_Status],0 |
605 | jne fdc_status_error_4 |
605 | jne fdc_status_error_4 |
606 | frnoreadd_1: |
606 | frnoreadd_1: |
607 | pop edi esi edx ecx ebx eax |
607 | pop edi esi edx ecx ebx eax |
608 | add esp,32 |
608 | add esp,32 |
609 | mov eax,ebp |
609 | mov eax,ebp |
610 | ret |
610 | ret |
611 | 611 | ||
612 | floppy_filesave: |
612 | floppy_filesave: |
613 | ;---------------------------------------------------------- |
613 | ;---------------------------------------------------------- |
614 | ; |
614 | ; |
615 | ; filesave - sys floppy |
615 | ; filesave - sys floppy |
616 | ; |
616 | ; |
617 | ; eax ; pointer to file name 11 chars - for root directory |
617 | ; eax ; pointer to file name 11 chars - for root directory |
618 | ; ebx ; buffer |
618 | ; ebx ; buffer |
619 | ; ecx ; count to write in bytes |
619 | ; ecx ; count to write in bytes |
620 | ; edx ; 0 create new , 1 append |
620 | ; edx ; 0 create new , 1 append |
621 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
621 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
622 | ; |
622 | ; |
623 | ; output : eax = 0 - ok |
623 | ; output : eax = 0 - ok |
624 | ; 5 - file not found / directory not found |
624 | ; 5 - file not found / directory not found |
625 | ; 8 - disk full |
625 | ; 8 - disk full |
626 | ; 10 - access denied |
626 | ; 10 - access denied |
627 | ;----------------------------------------------------------- |
627 | ;----------------------------------------------------------- |
628 | mov [path_pointer_flp],edi |
628 | mov [path_pointer_flp],edi |
629 | sub esp,32 |
629 | sub esp,32 |
630 | call expand_filename |
630 | call expand_filename |
631 | cmp edx,0 |
631 | cmp edx,0 |
632 | jnz fsdel_1 |
632 | jnz fsdel_1 |
633 | pusha |
633 | pusha |
634 | call floppy_filedelete |
634 | call floppy_filedelete |
635 | cmp [FDC_Status],0 |
635 | cmp [FDC_Status],0 |
636 | jne fdc_status_error_6 |
636 | jne fdc_status_error_6 |
637 | popa |
637 | popa |
638 | mov [save_flag],1 |
638 | mov [save_flag],1 |
639 | fsdel_1: |
639 | fsdel_1: |
640 | call floppy_free_space |
640 | call floppy_free_space |
641 | cmp [FDC_Status],0 |
641 | cmp [FDC_Status],0 |
642 | jne fdc_status_error_6 |
642 | jne fdc_status_error_6 |
643 | cmp ecx,edi |
643 | cmp ecx,edi |
644 | jb rd_do_save_1 |
644 | jb rd_do_save_1 |
645 | add esp,32 |
645 | add esp,32 |
646 | mov eax,8 ; not enough free space |
646 | mov eax,8 ; not enough free space |
647 | mov [flp_status],0 |
647 | mov [flp_status],0 |
648 | ret |
648 | ret |
649 | 649 | ||
650 | fdc_status_error_6: |
650 | fdc_status_error_6: |
651 | popa |
651 | popa |
652 | add esp,32 |
652 | add esp,32 |
653 | jmp fdc_status_error_1 |
653 | jmp fdc_status_error_1 |
654 | 654 | ||
655 | rd_do_save_1: |
655 | rd_do_save_1: |
656 | push eax ebx ecx edx esi edi |
656 | push eax ebx ecx edx esi edi |
657 | call read_flp_fat |
657 | call read_flp_fat |
658 | cmp [FDC_Status],0 |
658 | cmp [FDC_Status],0 |
659 | jne fdc_status_error_7 |
659 | jne fdc_status_error_7 |
660 | push eax |
660 | push eax |
661 | mov eax,[path_pointer_flp] |
661 | mov eax,[path_pointer_flp] |
662 | cmp [eax+36],byte 0 |
662 | cmp [eax+36],byte 0 |
663 | jne fifoundds_2 |
663 | jne fifoundds_2 |
664 | pop eax |
664 | pop eax |
665 | mov [save_root_flag],1 |
665 | mov [save_root_flag],1 |
666 | call read_flp_root |
666 | call read_flp_root |
667 | cmp [FDC_Status],0 |
667 | cmp [FDC_Status],0 |
668 | jne fdc_status_error_7 |
668 | jne fdc_status_error_7 |
669 | mov edi,FLOPPY_BUFF ;Point at directory |
669 | mov edi,FLOPPY_BUFF ;Point at directory |
670 | mov edx,224 +1 |
670 | mov edx,224 +1 |
671 | ; find an empty spot for filename in the root dir |
671 | ; find an empty spot for filename in the root dir |
672 | l20ds_1: |
672 | l20ds_1: |
673 | sub edx,1 |
673 | sub edx,1 |
674 | jz frnoreadds_1 |
674 | jz frnoreadds_1 |
675 | l21ds_1: |
675 | l21ds_1: |
676 | cmp [edi],byte 0xE5 |
676 | cmp [edi],byte 0xE5 |
677 | jz fifoundds_1 |
677 | jz fifoundds_1 |
678 | cmp [edi],byte 0x0 |
678 | cmp [edi],byte 0x0 |
679 | jz fifoundds_1 |
679 | jz fifoundds_1 |
680 | add edi,32 ; Advance to next entry |
680 | add edi,32 ; Advance to next entry |
681 | jmp l20ds_1 |
681 | jmp l20ds_1 |
682 | 682 | ||
683 | fifoundds_2: |
683 | fifoundds_2: |
684 | pop eax |
684 | pop eax |
685 | mov [save_root_flag],0 |
685 | mov [save_root_flag],0 |
686 | mov [FDD_Track],0 ; Öèëèíäð |
686 | mov [FDD_Track],0 ; Öèëèíäð |
687 | mov [FDD_Head],1 ; Ñòîðîíà |
687 | mov [FDD_Head],1 ; Ñòîðîíà |
688 | mov [FDD_Sector],2 ; Ñåêòîð |
688 | mov [FDD_Sector],2 ; Ñåêòîð |
689 | call SeekTrack |
689 | call SeekTrack |
690 | mov dh,14 |
690 | mov dh,14 |
691 | l.20_3: |
691 | l.20_3: |
692 | call ReadSectWithRetr |
692 | call ReadSectWithRetr |
693 | cmp [FDC_Status],0 |
693 | cmp [FDC_Status],0 |
694 | jne fdc_status_error_7 |
694 | jne fdc_status_error_7 |
695 | mov dl,16 |
695 | mov dl,16 |
696 | mov edi,FDD_BUFF |
696 | mov edi,FDD_BUFF |
697 | inc [FDD_Sector] |
697 | inc [FDD_Sector] |
698 | l.21_3: |
698 | l.21_3: |
699 | mov esi,eax ;Name of file we want |
699 | mov esi,eax ;Name of file we want |
700 | mov ecx,11 |
700 | mov ecx,11 |
701 | cld |
701 | cld |
702 | rep cmpsb ;Found the file? |
702 | rep cmpsb ;Found the file? |
703 | je fifoundds_3 ;Yes |
703 | je fifoundds_3 ;Yes |
704 | add ecx,21 |
704 | add ecx,21 |
705 | add edi, ecx ;Advance to next entry |
705 | add edi, ecx ;Advance to next entry |
706 | dec dl |
706 | dec dl |
707 | jne l.21_3 |
707 | jne l.21_3 |
708 | dec dh |
708 | dec dh |
709 | jne l.20_3 |
709 | jne l.20_3 |
710 | fdc_status_error_8: |
710 | fdc_status_error_8: |
711 | pop edi esi edx ecx ebx eax |
711 | pop edi esi edx ecx ebx eax |
712 | mov eax,5 ; file not found ? |
712 | mov eax,5 ; file not found ? |
713 | mov ebx,-1 |
713 | mov ebx,-1 |
714 | add esp,32 |
714 | add esp,32 |
715 | mov [flp_status],0 |
715 | mov [flp_status],0 |
716 | ret |
716 | ret |
717 | 717 | ||
718 | fifoundds_3: |
718 | fifoundds_3: |
719 | add edi,0xf |
719 | add edi,0xf |
720 | mov eax,[edi] |
720 | mov eax,[edi] |
721 | and eax,65535 |
721 | and eax,65535 |
722 | mov ebx,[path_pointer_flp] |
722 | mov ebx,[path_pointer_flp] |
723 | add ebx,36 |
723 | add ebx,36 |
724 | call get_cluster_of_a_path_flp |
724 | call get_cluster_of_a_path_flp |
725 | jc fdc_status_error_7_1 |
725 | jc fdc_status_error_7_1 |
726 | found_directory_for_writing_flp: |
726 | found_directory_for_writing_flp: |
727 | call analyze_directory_to_write_flp |
727 | call analyze_directory_to_write_flp |
728 | jc fdc_status_error_7_1 |
728 | jc fdc_status_error_7_1 |
729 | mov edi,ebx |
729 | mov edi,ebx |
730 | fifoundds_1: |
730 | fifoundds_1: |
731 | push edi ; move the filename to root dir |
731 | push edi ; move the filename to root dir |
732 | mov esi,[esp+4+20] |
732 | mov esi,[esp+4+20] |
733 | cmp [save_root_flag],0 |
733 | cmp [save_root_flag],0 |
734 | jne fifoundds_4 |
734 | jne fifoundds_4 |
735 | mov esi,[pointer_file_name_flp] |
735 | mov esi,[pointer_file_name_flp] |
736 | fifoundds_4: |
736 | fifoundds_4: |
737 | mov ecx,11 |
737 | mov ecx,11 |
738 | cld |
738 | cld |
739 | rep movsb |
739 | rep movsb |
740 | pop edi |
740 | pop edi |
741 | mov edx,edi |
741 | mov edx,edi |
742 | add edx,11+0xf ; edx <- cluster save position |
742 | add edx,11+0xf ; edx <- cluster save position |
743 | mov ebx,[esp+12] ; save file size |
743 | mov ebx,[esp+12] ; save file size |
744 | mov [edi+28],ebx |
744 | mov [edi+28],ebx |
745 | mov [edi+11],byte 0x20 ; attribute |
745 | mov [edi+11],byte 0x20 ; attribute |
746 | call get_date_for_file ; from FAT32.INC |
746 | call get_date_for_file ; from FAT32.INC |
747 | mov [edi+24],ax ; date |
747 | mov [edi+24],ax ; date |
748 | mov [edi+18],ax ; date |
748 | mov [edi+18],ax ; date |
749 | call get_time_for_file ; from FAT32.INC |
749 | call get_time_for_file ; from FAT32.INC |
750 | mov [edi+22],ax ; time |
750 | mov [edi+22],ax ; time |
751 | xor ax,ax |
751 | xor ax,ax |
752 | mov [edi+20],ax |
752 | mov [edi+20],ax |
753 | mov ebx,1 ; first cluster |
753 | mov ebx,1 ; first cluster |
754 | cmp [save_root_flag],0 |
754 | cmp [save_root_flag],0 |
755 | jne frnewds_1 |
755 | jne frnewds_1 |
756 | call frnewds_2 |
756 | call frnewds_2 |
757 | pusha |
757 | pusha |
758 | call WriteSectWithRetr |
758 | call WriteSectWithRetr |
759 | popa |
759 | popa |
760 | cmp [FDC_Status],0 |
760 | cmp [FDC_Status],0 |
761 | jne fdc_status_error_7 |
761 | jne fdc_status_error_7 |
762 | jmp frnewds_3 |
762 | jmp frnewds_3 |
763 | 763 | ||
764 | frnewds_1: |
764 | frnewds_1: |
765 | call frnewds_2 |
765 | call frnewds_2 |
766 | frnewds_3: |
766 | frnewds_3: |
767 | pusha ; move save to floppy cluster |
767 | pusha ; move save to floppy cluster |
768 | add ebx,31 |
768 | add ebx,31 |
769 | mov eax,ebx |
769 | mov eax,ebx |
770 | mov esi,[esp+32+16] |
770 | mov esi,[esp+32+16] |
771 | call take_data_from_application_1 |
771 | call take_data_from_application_1 |
772 | call save_chs_sector |
772 | call save_chs_sector |
773 | cmp [FDC_Status],0 |
773 | cmp [FDC_Status],0 |
774 | jne fdc_status_error_7 |
774 | jne fdc_status_error_7 |
775 | popa |
775 | popa |
776 | mov eax,[esp+12] |
776 | mov eax,[esp+12] |
777 | cmp eax,512 |
777 | cmp eax,512 |
778 | jb flnsa_1 |
778 | jb flnsa_1 |
779 | sub eax,512 |
779 | sub eax,512 |
780 | mov [esp+12],eax |
780 | mov [esp+12],eax |
781 | mov eax,[esp+16] |
781 | mov eax,[esp+16] |
782 | add eax,512 |
782 | add eax,512 |
783 | mov [esp+16],eax |
783 | mov [esp+16],eax |
784 | jmp frnewds_1 |
784 | jmp frnewds_1 |
785 | 785 | ||
786 | frnewds_2: |
786 | frnewds_2: |
787 | add ebx,1 |
787 | add ebx,1 |
788 | mov edi,ebx ; find free cluster in FAT |
788 | mov edi,ebx ; find free cluster in FAT |
789 | shl edi,1 |
789 | shl edi,1 |
790 | add edi,FLOPPY_FAT |
790 | add edi,FLOPPY_FAT |
791 | mov eax,[edi] |
791 | mov eax,[edi] |
792 | and eax,4095 |
792 | and eax,4095 |
793 | jnz frnewds_2 |
793 | jnz frnewds_2 |
794 | mov [edx],bx ; save next cluster pos. to prev cl. |
794 | mov [edx],bx ; save next cluster pos. to prev cl. |
795 | mov edx,edi ; next save pos abs mem add |
795 | mov edx,edi ; next save pos abs mem add |
796 | ret |
796 | ret |
797 | 797 | ||
798 | flnsa_1: |
798 | flnsa_1: |
799 | mov [edi],word 4095 ; mark end of file - last cluster |
799 | mov [edi],word 4095 ; mark end of file - last cluster |
800 | cmp [save_root_flag],1 |
800 | cmp [save_root_flag],1 |
801 | jne flnsa_2 |
801 | jne flnsa_2 |
802 | call save_flp_root |
802 | call save_flp_root |
803 | cmp [FDC_Status],0 |
803 | cmp [FDC_Status],0 |
804 | jne fdc_status_error_7 |
804 | jne fdc_status_error_7 |
805 | flnsa_2: |
805 | flnsa_2: |
806 | call save_flp_fat |
806 | call save_flp_fat |
807 | cmp [FDC_Status],0 |
807 | cmp [FDC_Status],0 |
808 | jne fdc_status_error_7 |
808 | jne fdc_status_error_7 |
809 | frnoreadds_1: |
809 | frnoreadds_1: |
810 | pop edi esi edx ecx ebx eax |
810 | pop edi esi edx ecx ebx eax |
811 | add esp,32 |
811 | add esp,32 |
812 | mov eax,0 |
812 | mov eax,0 |
813 | mov [flp_status],0 |
813 | mov [flp_status],0 |
814 | ret |
814 | ret |
815 | 815 | ||
816 | fdc_status_error_7_1: |
816 | fdc_status_error_7_1: |
817 | cmp [FDC_Status],0 |
817 | cmp [FDC_Status],0 |
818 | je fdc_status_error_8 |
818 | je fdc_status_error_8 |
819 | fdc_status_error_7: |
819 | fdc_status_error_7: |
820 | pop edi esi edx ecx ebx eax |
820 | pop edi esi edx ecx ebx eax |
821 | add esp,32 |
821 | add esp,32 |
822 | jmp fdc_status_error_1 |
822 | jmp fdc_status_error_1 |
823 | 823 | ||
824 | save_chs_sector: |
824 | save_chs_sector: |
825 | call calculate_chs |
825 | call calculate_chs |
826 | call WriteSectWithRetr |
826 | call WriteSectWithRetr |
827 | ret |
827 | ret |
828 | 828 | ||
829 | calculate_chs: |
829 | calculate_chs: |
830 | mov bl,[FDD_Track] |
830 | mov bl,[FDD_Track] |
831 | mov [old_track],bl |
831 | mov [old_track],bl |
832 | mov ebx,18 |
832 | mov ebx,18 |
833 | xor edx,edx |
833 | xor edx,edx |
834 | div ebx |
834 | div ebx |
835 | inc edx |
835 | inc edx |
836 | mov [FDD_Sector],dl |
836 | mov [FDD_Sector],dl |
837 | xor edx,edx |
837 | xor edx,edx |
838 | mov ebx,2 |
838 | mov ebx,2 |
839 | div ebx |
839 | div ebx |
840 | mov [FDD_Track],al |
840 | mov [FDD_Track],al |
841 | mov [FDD_Head],0 |
841 | mov [FDD_Head],0 |
842 | cmp edx,0 |
842 | cmp edx,0 |
843 | je no_head_2 |
843 | je no_head_2 |
844 | inc [FDD_Head] |
844 | inc [FDD_Head] |
845 | no_head_2: |
845 | no_head_2: |
846 | mov dl,[old_track] |
846 | mov dl,[old_track] |
847 | cmp dl,[FDD_Track] |
847 | cmp dl,[FDD_Track] |
848 | je no_seek_track_1 |
848 | je no_seek_track_1 |
849 | call SeekTrack |
849 | call SeekTrack |
850 | no_seek_track_1: |
850 | no_seek_track_1: |
851 | ret |
851 | ret |
852 | 852 | ||
853 | 853 | ||
854 | get_cluster_of_a_path_flp: |
854 | get_cluster_of_a_path_flp: |
855 | ;--------------------------------------------------------- |
855 | ;--------------------------------------------------------- |
856 | ; input : EBX = pointer to a path string |
856 | ; input : EBX = pointer to a path string |
857 | ; (example: the path "/files/data/document" become |
857 | ; (example: the path "/files/data/document" become |
858 | ; "files......data.......document...0" |
858 | ; "files......data.......document...0" |
859 | ; '.' = space char |
859 | ; '.' = space char |
860 | ; '0' = char(0) (ASCII=0) !!! ) |
860 | ; '0' = char(0) (ASCII=0) !!! ) |
861 | ; output : if (CARRY=1) -> ERROR in the PATH |
861 | ; output : if (CARRY=1) -> ERROR in the PATH |
862 | ; if (CARRY=0) -> EAX=cluster |
862 | ; if (CARRY=0) -> EAX=cluster |
863 | ;--------------------------------------------------------- |
863 | ;--------------------------------------------------------- |
864 | 864 | ||
865 | push edx |
865 | push edx |
866 | mov edx,ebx |
866 | mov edx,ebx |
867 | 867 | ||
868 | search_end_of_path_flp: |
868 | search_end_of_path_flp: |
869 | cmp [save_flag],0 |
869 | cmp [save_flag],0 |
870 | jne search_end_of_path_flp_1 |
870 | jne search_end_of_path_flp_1 |
871 | cmp byte [edx],0 |
871 | cmp byte [edx],0 |
872 | je found_end_of_path_flp |
872 | je found_end_of_path_flp |
873 | jmp search_end_of_path_flp_2 |
873 | jmp search_end_of_path_flp_2 |
874 | search_end_of_path_flp_1: |
874 | search_end_of_path_flp_1: |
875 | cmp byte [edx+12],0 |
875 | cmp byte [edx+12],0 |
876 | je found_end_of_path_flp |
876 | je found_end_of_path_flp |
877 | search_end_of_path_flp_2: |
877 | search_end_of_path_flp_2: |
878 | inc edx ; '/' |
878 | inc edx ; '/' |
879 | call analyze_directory_flp |
879 | call analyze_directory_flp |
880 | jc directory_not_found_flp |
880 | jc directory_not_found_flp |
881 | 881 | ||
882 | mov eax,[ebx+20-2] ; read the HIGH 16bit cluster field |
882 | mov eax,[ebx+20-2] ; read the HIGH 16bit cluster field |
883 | mov ax,[ebx+26] ; read the LOW 16bit cluster field |
883 | mov ax,[ebx+26] ; read the LOW 16bit cluster field |
884 | and eax,0xfff ;[fatMASK] |
884 | and eax,0xfff ;[fatMASK] |
885 | add edx,11 ; 8+3 (name+extension) |
885 | add edx,11 ; 8+3 (name+extension) |
886 | jmp search_end_of_path_flp |
886 | jmp search_end_of_path_flp |
887 | 887 | ||
888 | found_end_of_path_flp: |
888 | found_end_of_path_flp: |
889 | inc edx |
889 | inc edx |
890 | mov [pointer_file_name_flp],edx |
890 | mov [pointer_file_name_flp],edx |
891 | pop edx |
891 | pop edx |
892 | clc ; no errors |
892 | clc ; no errors |
893 | ret |
893 | ret |
894 | 894 | ||
895 | directory_not_found_flp: |
895 | directory_not_found_flp: |
896 | pop edx |
896 | pop edx |
897 | stc ; errors occour |
897 | stc ; errors occour |
898 | ret |
898 | ret |
899 | 899 | ||
900 | analyze_directory_flp: |
900 | analyze_directory_flp: |
901 | ;-------------------------------- |
901 | ;-------------------------------- |
902 | ; input : EAX = first cluster of the directory |
902 | ; input : EAX = first cluster of the directory |
903 | ; EBX = pointer to filename |
903 | ; EBX = pointer to filename |
904 | ; output : IF CARRY=0 EAX = sector where th file is found |
904 | ; output : IF CARRY=0 EAX = sector where th file is found |
905 | ; EBX = pointer in buffer |
905 | ; EBX = pointer in buffer |
906 | ; [buffer .. buffer+511] |
906 | ; [buffer .. buffer+511] |
907 | ; ECX,EDX,EDI,EDI not changed |
907 | ; ECX,EDX,EDI,EDI not changed |
908 | ; IF CARRY=1 |
908 | ; IF CARRY=1 |
909 | ;-------------------------------- |
909 | ;-------------------------------- |
910 | push ebx ;[esp+16] |
910 | push ebx ;[esp+16] |
911 | push ecx |
911 | push ecx |
912 | push edx |
912 | push edx |
913 | push esi |
913 | push esi |
914 | push edi |
914 | push edi |
915 | 915 | ||
916 | 916 | ||
917 | adr56_flp: |
917 | adr56_flp: |
918 | mov [clust_tmp_flp],eax |
918 | mov [clust_tmp_flp],eax |
919 | add eax,31 |
919 | add eax,31 |
920 | pusha |
920 | pusha |
921 | call read_chs_sector |
921 | call read_chs_sector |
922 | popa |
922 | popa |
923 | cmp [FDC_Status],0 |
923 | cmp [FDC_Status],0 |
924 | jne not_found_file_analyze_flp |
924 | jne not_found_file_analyze_flp |
925 | 925 | ||
926 | mov ecx,512/32 |
926 | mov ecx,512/32 |
927 | mov ebx,FDD_BUFF |
927 | mov ebx,FDD_BUFF |
928 | 928 | ||
929 | adr1_analyze_flp: |
929 | adr1_analyze_flp: |
930 | mov esi,edx ;[esp+16] |
930 | mov esi,edx ;[esp+16] |
931 | mov edi,ebx |
931 | mov edi,ebx |
932 | cld |
932 | cld |
933 | push ecx |
933 | push ecx |
934 | mov ecx,11 |
934 | mov ecx,11 |
935 | rep cmpsb |
935 | rep cmpsb |
936 | pop ecx |
936 | pop ecx |
937 | je found_file_analyze_flp |
937 | je found_file_analyze_flp |
938 | 938 | ||
939 | add ebx,32 |
939 | add ebx,32 |
940 | loop adr1_analyze_flp |
940 | loop adr1_analyze_flp |
941 | 941 | ||
942 | mov eax,[clust_tmp_flp] |
942 | mov eax,[clust_tmp_flp] |
943 | shl eax,1 ;find next cluster from FAT |
943 | shl eax,1 ;find next cluster from FAT |
944 | add eax,FLOPPY_FAT |
944 | add eax,FLOPPY_FAT |
945 | mov eax,[eax] |
945 | mov eax,[eax] |
946 | and eax,4095 |
946 | and eax,4095 |
947 | cmp eax,0x0ff8 |
947 | cmp eax,0x0ff8 |
948 | jb adr56_flp |
948 | jb adr56_flp |
949 | not_found_file_analyze_flp: |
949 | not_found_file_analyze_flp: |
950 | pop edi |
950 | pop edi |
951 | pop esi |
951 | pop esi |
952 | pop edx |
952 | pop edx |
953 | pop ecx |
953 | pop ecx |
954 | add esp,4 |
954 | add esp,4 |
955 | stc ;file not found |
955 | stc ;file not found |
956 | ret |
956 | ret |
957 | 957 | ||
958 | found_file_analyze_flp: |
958 | found_file_analyze_flp: |
959 | pop edi |
959 | pop edi |
960 | pop esi |
960 | pop esi |
961 | pop edx |
961 | pop edx |
962 | pop ecx |
962 | pop ecx |
963 | add esp,4 |
963 | add esp,4 |
964 | clc ;file found |
964 | clc ;file found |
965 | ret |
965 | ret |
966 | 966 | ||
967 | 967 | ||
968 | analyze_directory_to_write_flp: |
968 | analyze_directory_to_write_flp: |
969 | ;-------------------------------- |
969 | ;-------------------------------- |
970 | ; input : EAX = first cluster of the directory |
970 | ; input : EAX = first cluster of the directory |
971 | ; output : IF CARRY=0 EAX = sector where the file is found |
971 | ; output : IF CARRY=0 EAX = sector where the file is found |
972 | ; EBX = pointer in buffer |
972 | ; EBX = pointer in buffer |
973 | ; [buffer .. buffer+511] |
973 | ; [buffer .. buffer+511] |
974 | ; ECX,EDX,EDI,EDI not changed |
974 | ; ECX,EDX,EDI,EDI not changed |
975 | ; IF CARRY=1 |
975 | ; IF CARRY=1 |
976 | ;-------------------------------- |
976 | ;-------------------------------- |
977 | 977 | ||
978 | push ecx |
978 | push ecx |
979 | push edx |
979 | push edx |
980 | push esi |
980 | push esi |
981 | 981 | ||
982 | adr561: |
982 | adr561: |
983 | mov [clust_tmp_flp],eax |
983 | mov [clust_tmp_flp],eax |
984 | add eax,31 |
984 | add eax,31 |
985 | pusha |
985 | pusha |
986 | call read_chs_sector |
986 | call read_chs_sector |
987 | popa |
987 | popa |
988 | cmp [FDC_Status],0 |
988 | cmp [FDC_Status],0 |
989 | jne error_found_file_analyze1 |
989 | jne error_found_file_analyze1 |
990 | 990 | ||
991 | mov ecx,512/32 |
991 | mov ecx,512/32 |
992 | mov ebx,FDD_BUFF |
992 | mov ebx,FDD_BUFF |
993 | 993 | ||
994 | adr1_analyze1: |
994 | adr1_analyze1: |
995 | cmp byte [ebx],0x00 |
995 | cmp byte [ebx],0x00 |
996 | je found_file_analyze1 |
996 | je found_file_analyze1 |
997 | cmp byte [ebx],0xe5 |
997 | cmp byte [ebx],0xe5 |
998 | je found_file_analyze1 |
998 | je found_file_analyze1 |
999 | 999 | ||
1000 | avanti: |
1000 | avanti: |
1001 | add ebx,32 |
1001 | add ebx,32 |
1002 | loop adr1_analyze1 |
1002 | loop adr1_analyze1 |
1003 | 1003 | ||
1004 | mov eax,[clust_tmp_flp] |
1004 | mov eax,[clust_tmp_flp] |
1005 | shl eax,1 ;find next cluster from FAT |
1005 | shl eax,1 ;find next cluster from FAT |
1006 | add eax,FLOPPY_FAT |
1006 | add eax,FLOPPY_FAT |
1007 | mov eax,[eax] |
1007 | mov eax,[eax] |
1008 | and eax,4095 |
1008 | and eax,4095 |
1009 | cmp eax,0x0ff8 |
1009 | cmp eax,0x0ff8 |
1010 | jb adr561 |
1010 | jb adr561 |
1011 | 1011 | ||
1012 | call get_free_FAT ;this block of code add a new cluster |
1012 | call get_free_FAT ;this block of code add a new cluster |
1013 | ;for the directory because the directory |
1013 | ;for the directory because the directory |
1014 | ;is full |
1014 | ;is full |
1015 | 1015 | ||
1016 | mov [edi],word 0x0fff |
1016 | mov [edi],word 0x0fff |
1017 | 1017 | ||
1018 | mov eax,[clust_tmp_flp] |
1018 | mov eax,[clust_tmp_flp] |
1019 | shl eax,1 ;find next cluster from FAT |
1019 | shl eax,1 ;find next cluster from FAT |
1020 | add eax,FLOPPY_FAT |
1020 | add eax,FLOPPY_FAT |
1021 | sub edi,FLOPPY_FAT |
1021 | sub edi,FLOPPY_FAT |
1022 | mov [eax],di |
1022 | mov [eax],di |
1023 | 1023 | ||
1024 | pusha |
1024 | pusha |
1025 | mov ecx,512/4 |
1025 | mov ecx,512/4 |
1026 | xor eax,eax |
1026 | xor eax,eax |
1027 | mov edi,FDD_BUFF |
1027 | mov edi,FDD_BUFF |
1028 | cld |
1028 | cld |
1029 | rep stosd |
1029 | rep stosd |
1030 | popa |
1030 | popa |
1031 | 1031 | ||
1032 | mov eax,edi |
1032 | mov eax,edi |
1033 | add eax,31 |
1033 | add eax,31 |
1034 | pusha |
1034 | pusha |
1035 | call save_chs_sector |
1035 | call save_chs_sector |
1036 | popa |
1036 | popa |
1037 | cmp [FDC_Status],0 |
1037 | cmp [FDC_Status],0 |
1038 | jne error_found_file_analyze1 |
1038 | jne error_found_file_analyze1 |
1039 | mov ebx,FDD_BUFF |
1039 | mov ebx,FDD_BUFF |
1040 | 1040 | ||
1041 | found_file_analyze1: |
1041 | found_file_analyze1: |
1042 | 1042 | ||
1043 | pop esi |
1043 | pop esi |
1044 | pop edx |
1044 | pop edx |
1045 | pop ecx |
1045 | pop ecx |
1046 | clc ;file found |
1046 | clc ;file found |
1047 | ret |
1047 | ret |
1048 | 1048 | ||
1049 | error_found_file_analyze1: |
1049 | error_found_file_analyze1: |
1050 | pop esi |
1050 | pop esi |
1051 | pop edx |
1051 | pop edx |
1052 | pop ecx |
1052 | pop ecx |
1053 | stc |
1053 | stc |
1054 | ret |
1054 | ret |
1055 | 1055 | ||
1056 | get_free_FAT_flp: |
1056 | get_free_FAT_flp: |
1057 | ;------------------------------------------ |
1057 | ;------------------------------------------ |
1058 | ; input : EAX = # cluster for start the searching |
1058 | ; input : EAX = # cluster for start the searching |
1059 | ; output : EAX = # first cluster found free |
1059 | ; output : EAX = # first cluster found free |
1060 | ;------------------------------------------- |
1060 | ;------------------------------------------- |
1061 | push ebx |
1061 | push ebx |
1062 | 1062 | ||
1063 | mov ebx,1 |
1063 | mov ebx,1 |
1064 | check_new_flp: |
1064 | check_new_flp: |
1065 | add ebx,1 |
1065 | add ebx,1 |
1066 | mov edi,ebx ; find free cluster in FAT |
1066 | mov edi,ebx ; find free cluster in FAT |
1067 | shl edi,1 |
1067 | shl edi,1 |
1068 | add edi,FLOPPY_FAT |
1068 | add edi,FLOPPY_FAT |
1069 | mov eax,[edi] |
1069 | mov eax,[edi] |
1070 | and eax,4095 |
1070 | and eax,4095 |
1071 | cmp eax,0x0 |
1071 | cmp eax,0x0 |
1072 | jnz check_new_flp |
1072 | jnz check_new_flp |
1073 | 1073 | ||
1074 | pop ebx |
1074 | pop ebx |
1075 | ret |
1075 | ret |
1076 | 1076 | ||
1077 | ; \begin{diamond} |
1077 | ; \begin{diamond} |
1078 | fat_find_lfn: |
1078 | fat_find_lfn: |
1079 | ; in: esi->name |
1079 | ; in: esi->name |
1080 | ; [esp+4] = next |
1080 | ; [esp+4] = next |
1081 | ; [esp+8] = first |
1081 | ; [esp+8] = first |
1082 | ; [esp+C]... - possibly parameters for first and next |
1082 | ; [esp+C]... - possibly parameters for first and next |
1083 | ; out: CF=1 - file not found |
1083 | ; out: CF=1 - file not found |
1084 | ; else CF=0, esi->next name component, edi->direntry |
1084 | ; else CF=0, esi->next name component, edi->direntry |
1085 | pusha |
1085 | pusha |
1086 | lea eax, [esp+0Ch+20h] |
1086 | lea eax, [esp+0Ch+20h] |
1087 | call dword [eax-4] |
1087 | call dword [eax-4] |
1088 | jc .reterr |
1088 | jc .reterr |
1089 | sub esp, 262*2 ; reserve place for LFN |
1089 | sub esp, 262*2 ; reserve place for LFN |
1090 | mov ebp, esp |
1090 | mov ebp, esp |
1091 | push 0 ; for fat_get_name: read ASCII name |
1091 | push 0 ; for fat_get_name: read ASCII name |
1092 | .l1: |
1092 | .l1: |
1093 | call fat_get_name |
1093 | call fat_get_name |
1094 | jc .l2 |
1094 | jc .l2 |
1095 | call fat_compare_name |
1095 | call fat_compare_name |
1096 | jz .found |
1096 | jz .found |
1097 | .l2: |
1097 | .l2: |
1098 | lea eax, [esp+0Ch+20h+262*2+4] |
1098 | lea eax, [esp+0Ch+20h+262*2+4] |
1099 | call dword [eax-8] |
1099 | call dword [eax-8] |
1100 | jnc .l1 |
1100 | jnc .l1 |
1101 | add esp, 262*2+4 |
1101 | add esp, 262*2+4 |
1102 | .reterr: |
1102 | .reterr: |
1103 | stc |
1103 | stc |
1104 | popa |
1104 | popa |
1105 | ret |
1105 | ret |
1106 | .found: |
1106 | .found: |
1107 | add esp, 262*2+4 |
1107 | add esp, 262*2+4 |
1108 | ; if this is LFN entry, advance to true entry |
1108 | ; if this is LFN entry, advance to true entry |
1109 | cmp byte [edi+11], 0xF |
1109 | cmp byte [edi+11], 0xF |
1110 | jnz @f |
1110 | jnz @f |
1111 | lea eax, [esp+0Ch+20h] |
1111 | lea eax, [esp+0Ch+20h] |
1112 | call dword [eax-8] |
1112 | call dword [eax-8] |
1113 | jc .reterr |
1113 | jc .reterr |
1114 | @@: |
1114 | @@: |
1115 | add esp, 8 ; CF=0 |
1115 | add esp, 8 ; CF=0 |
1116 | push esi |
1116 | push esi |
1117 | push edi |
1117 | push edi |
1118 | popa |
1118 | popa |
1119 | ret |
1119 | ret |
1120 | 1120 | ||
1121 | uglobal |
1121 | uglobal |
1122 | ; this is for delete support |
1122 | ; this is for delete support |
1123 | fd_prev_sector dd ? |
1123 | fd_prev_sector dd ? |
1124 | fd_prev_prev_sector dd ? |
1124 | fd_prev_prev_sector dd ? |
1125 | endg |
1125 | endg |
1126 | 1126 | ||
1127 | flp_root_next: |
1127 | flp_root_next: |
1128 | cmp edi, 0xD200-0x20 |
1128 | cmp edi, OS_BASE+0xD200-0x20 |
1129 | jae @f |
1129 | jae @f |
1130 | add edi, 0x20 |
1130 | add edi, 0x20 |
1131 | ret ; CF=0 |
1131 | ret ; CF=0 |
1132 | @@: |
1132 | @@: |
1133 | ; read next sector |
1133 | ; read next sector |
1134 | inc dword [eax] |
1134 | inc dword [eax] |
1135 | cmp dword [eax], 14 |
1135 | cmp dword [eax], 14 |
1136 | jae flp_root_first.readerr |
1136 | jae flp_root_first.readerr |
1137 | push [fd_prev_sector] |
1137 | push [fd_prev_sector] |
1138 | pop [fd_prev_prev_sector] |
1138 | pop [fd_prev_prev_sector] |
1139 | push eax |
1139 | push eax |
1140 | mov eax, [eax] |
1140 | mov eax, [eax] |
1141 | add eax, 19-1 |
1141 | add eax, 19-1 |
1142 | mov [fd_prev_sector], eax |
1142 | mov [fd_prev_sector], eax |
1143 | pop eax |
1143 | pop eax |
1144 | flp_root_first: |
1144 | flp_root_first: |
1145 | mov eax, [eax] |
1145 | mov eax, [eax] |
1146 | pusha |
1146 | pusha |
1147 | add eax, 19 |
1147 | add eax, 19 |
1148 | call read_chs_sector |
1148 | call read_chs_sector |
1149 | popa |
1149 | popa |
1150 | cmp [FDC_Status], 0 |
1150 | cmp [FDC_Status], 0 |
1151 | jnz .readerr |
1151 | jnz .readerr |
1152 | mov edi, FDD_BUFF |
1152 | mov edi, FDD_BUFF |
1153 | ret ; CF=0 |
1153 | ret ; CF=0 |
1154 | .readerr: |
1154 | .readerr: |
1155 | stc |
1155 | stc |
1156 | ret |
1156 | ret |
1157 | 1157 | ||
1158 | flp_rootmem_first: |
1158 | flp_rootmem_first: |
1159 | mov edi, FLOPPY_BUFF |
1159 | mov edi, FLOPPY_BUFF |
1160 | clc |
1160 | clc |
1161 | ret |
1161 | ret |
1162 | flp_rootmem_next: |
1162 | flp_rootmem_next: |
1163 | add edi, 0x20 |
1163 | add edi, 0x20 |
1164 | cmp edi, FLOPPY_BUFF+14*0x200 |
1164 | cmp edi, FLOPPY_BUFF+14*0x200 |
1165 | cmc |
1165 | cmc |
1166 | flp_rootmem_next_write: |
1166 | flp_rootmem_next_write: |
1167 | flp_rootmem_begin_write: |
1167 | flp_rootmem_begin_write: |
1168 | flp_rootmem_end_write: |
1168 | flp_rootmem_end_write: |
1169 | ret |
1169 | ret |
1170 | flp_rootmem_extend_dir: |
1170 | flp_rootmem_extend_dir: |
1171 | stc |
1171 | stc |
1172 | ret |
1172 | ret |
1173 | 1173 | ||
1174 | flp_notroot_next: |
1174 | flp_notroot_next: |
1175 | cmp edi, 0xD200-0x20 |
1175 | cmp edi, OS_BASE+0xD200-0x20 |
1176 | jae flp_notroot_next_sector |
1176 | jae flp_notroot_next_sector |
1177 | add edi, 0x20 |
1177 | add edi, 0x20 |
1178 | ret ; CF=0 |
1178 | ret ; CF=0 |
1179 | flp_notroot_next_sector: |
1179 | flp_notroot_next_sector: |
1180 | push ecx |
1180 | push ecx |
1181 | mov ecx, [eax] |
1181 | mov ecx, [eax] |
1182 | push [fd_prev_sector] |
1182 | push [fd_prev_sector] |
1183 | pop [fd_prev_prev_sector] |
1183 | pop [fd_prev_prev_sector] |
1184 | add ecx, 31 |
1184 | add ecx, 31 |
1185 | mov [fd_prev_sector], ecx |
1185 | mov [fd_prev_sector], ecx |
1186 | mov ecx, [(ecx-31)*2+FLOPPY_FAT] |
1186 | mov ecx, [(ecx-31)*2+FLOPPY_FAT] |
1187 | and ecx, 0xFFF |
1187 | and ecx, 0xFFF |
1188 | cmp ecx, 2849 |
1188 | cmp ecx, 2849 |
1189 | jae flp_notroot_first.err2 |
1189 | jae flp_notroot_first.err2 |
1190 | mov [eax], ecx |
1190 | mov [eax], ecx |
1191 | pop ecx |
1191 | pop ecx |
1192 | flp_notroot_first: |
1192 | flp_notroot_first: |
1193 | mov eax, [eax] |
1193 | mov eax, [eax] |
1194 | cmp eax, 2 |
1194 | cmp eax, 2 |
1195 | jb .err |
1195 | jb .err |
1196 | cmp eax, 2849 |
1196 | cmp eax, 2849 |
1197 | jae .err |
1197 | jae .err |
1198 | pusha |
1198 | pusha |
1199 | add eax, 31 |
1199 | add eax, 31 |
1200 | call read_chs_sector |
1200 | call read_chs_sector |
1201 | popa |
1201 | popa |
1202 | mov edi, FDD_BUFF |
1202 | mov edi, FDD_BUFF |
1203 | cmp [FDC_Status], 0 |
1203 | cmp [FDC_Status], 0 |
1204 | jnz .err |
1204 | jnz .err |
1205 | ret ; CF=0 |
1205 | ret ; CF=0 |
1206 | .err2: |
1206 | .err2: |
1207 | pop ecx |
1207 | pop ecx |
1208 | .err: |
1208 | .err: |
1209 | stc |
1209 | stc |
1210 | ret |
1210 | ret |
1211 | flp_notroot_begin_write: |
1211 | flp_notroot_begin_write: |
1212 | pusha |
1212 | pusha |
1213 | mov eax, [eax] |
1213 | mov eax, [eax] |
1214 | add eax, 31 |
1214 | add eax, 31 |
1215 | call read_chs_sector |
1215 | call read_chs_sector |
1216 | popa |
1216 | popa |
1217 | ret |
1217 | ret |
1218 | flp_notroot_end_write: |
1218 | flp_notroot_end_write: |
1219 | pusha |
1219 | pusha |
1220 | mov eax, [eax] |
1220 | mov eax, [eax] |
1221 | add eax, 31 |
1221 | add eax, 31 |
1222 | call save_chs_sector |
1222 | call save_chs_sector |
1223 | popa |
1223 | popa |
1224 | ret |
1224 | ret |
1225 | flp_notroot_next_write: |
1225 | flp_notroot_next_write: |
1226 | cmp edi, 0xD200 |
1226 | cmp edi, OS_BASE+0xD200 |
1227 | jae @f |
1227 | jae @f |
1228 | ret |
1228 | ret |
1229 | @@: |
1229 | @@: |
1230 | call flp_notroot_end_write |
1230 | call flp_notroot_end_write |
1231 | jmp flp_notroot_next_sector |
1231 | jmp flp_notroot_next_sector |
1232 | flp_notroot_extend_dir: |
1232 | flp_notroot_extend_dir: |
1233 | ; find free cluster in FAT |
1233 | ; find free cluster in FAT |
1234 | pusha |
1234 | pusha |
1235 | xor eax, eax |
1235 | xor eax, eax |
1236 | mov edi, FLOPPY_FAT |
1236 | mov edi, FLOPPY_FAT |
1237 | mov ecx, 2849 |
1237 | mov ecx, 2849 |
1238 | repnz scasw |
1238 | repnz scasw |
1239 | jnz .notfound |
1239 | jnz .notfound |
1240 | mov word [edi-2], 0xFFF ; mark as last cluster |
1240 | mov word [edi-2], 0xFFF ; mark as last cluster |
1241 | sub edi, FLOPPY_FAT |
1241 | sub edi, FLOPPY_FAT |
1242 | shr edi, 1 |
1242 | shr edi, 1 |
1243 | dec edi |
1243 | dec edi |
1244 | mov eax, [esp+28] |
1244 | mov eax, [esp+28] |
1245 | mov ecx, [eax] |
1245 | mov ecx, [eax] |
1246 | mov [FLOPPY_FAT+ecx*2], di |
1246 | mov [FLOPPY_FAT+ecx*2], di |
1247 | mov [eax], edi |
1247 | mov [eax], edi |
1248 | xor eax, eax |
1248 | xor eax, eax |
1249 | mov edi, FDD_BUFF |
1249 | mov edi, FDD_BUFF |
1250 | mov ecx, 128 |
1250 | mov ecx, 128 |
1251 | rep stosd |
1251 | rep stosd |
1252 | popa |
1252 | popa |
1253 | call flp_notroot_end_write |
1253 | call flp_notroot_end_write |
1254 | mov edi, FDD_BUFF |
1254 | mov edi, FDD_BUFF |
1255 | clc |
1255 | clc |
1256 | ret |
1256 | ret |
1257 | .notfound: |
1257 | .notfound: |
1258 | popa |
1258 | popa |
1259 | stc |
1259 | stc |
1260 | ret |
1260 | ret |
1261 | 1261 | ||
1262 | fd_find_lfn: |
1262 | fd_find_lfn: |
1263 | ; in: esi->name |
1263 | ; in: esi->name |
1264 | ; out: CF=1 - file not found |
1264 | ; out: CF=1 - file not found |
1265 | ; else CF=0 and edi->direntry, eax=directory cluster (0 for root) |
1265 | ; else CF=0 and edi->direntry, eax=directory cluster (0 for root) |
1266 | push esi edi |
1266 | push esi edi |
1267 | push 0 |
1267 | push 0 |
1268 | push flp_root_first |
1268 | push flp_root_first |
1269 | push flp_root_next |
1269 | push flp_root_next |
1270 | .loop: |
1270 | .loop: |
1271 | call fat_find_lfn |
1271 | call fat_find_lfn |
1272 | jc .notfound |
1272 | jc .notfound |
1273 | cmp byte [esi], 0 |
1273 | cmp byte [esi], 0 |
1274 | jz .found |
1274 | jz .found |
1275 | test byte [edi+11], 10h |
1275 | test byte [edi+11], 10h |
1276 | jz .notfound |
1276 | jz .notfound |
1277 | movzx eax, word [edi+26] ; cluster |
1277 | movzx eax, word [edi+26] ; cluster |
1278 | mov [esp+8], eax |
1278 | mov [esp+8], eax |
1279 | mov dword [esp+4], flp_notroot_first |
1279 | mov dword [esp+4], flp_notroot_first |
1280 | mov dword [esp], flp_notroot_next |
1280 | mov dword [esp], flp_notroot_next |
1281 | jmp .loop |
1281 | jmp .loop |
1282 | .notfound: |
1282 | .notfound: |
1283 | add esp, 12 |
1283 | add esp, 12 |
1284 | pop edi esi |
1284 | pop edi esi |
1285 | stc |
1285 | stc |
1286 | ret |
1286 | ret |
1287 | .found: |
1287 | .found: |
1288 | mov eax, [esp+8] |
1288 | mov eax, [esp+8] |
1289 | add eax, 31 |
1289 | add eax, 31 |
1290 | cmp dword [esp], flp_root_next |
1290 | cmp dword [esp], flp_root_next |
1291 | jnz @f |
1291 | jnz @f |
1292 | add eax, -31+19 |
1292 | add eax, -31+19 |
1293 | @@: |
1293 | @@: |
1294 | add esp, 16 ; CF=0 |
1294 | add esp, 16 ; CF=0 |
1295 | pop esi |
1295 | pop esi |
1296 | ret |
1296 | ret |
1297 | 1297 | ||
1298 | ;---------------------------------------------------------------- |
1298 | ;---------------------------------------------------------------- |
1299 | ; |
1299 | ; |
1300 | ; fs_FloppyRead - LFN variant for reading floppy |
1300 | ; fs_FloppyRead - LFN variant for reading floppy |
1301 | ; |
1301 | ; |
1302 | ; esi points to filename |
1302 | ; esi points to filename |
1303 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1303 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1304 | ; may be ebx=0 - start from first byte |
1304 | ; may be ebx=0 - start from first byte |
1305 | ; ecx number of bytes to read, 0+ |
1305 | ; ecx number of bytes to read, 0+ |
1306 | ; edx mem location to return data |
1306 | ; edx mem location to return data |
1307 | ; |
1307 | ; |
1308 | ; ret ebx = bytes read or 0xffffffff file not found |
1308 | ; ret ebx = bytes read or 0xffffffff file not found |
1309 | ; eax = 0 ok read or other = errormsg |
1309 | ; eax = 0 ok read or other = errormsg |
1310 | ; |
1310 | ; |
1311 | ;-------------------------------------------------------------- |
1311 | ;-------------------------------------------------------------- |
1312 | fs_FloppyRead: |
1312 | fs_FloppyRead: |
1313 | call read_flp_fat |
1313 | call read_flp_fat |
1314 | cmp byte [esi], 0 |
1314 | cmp byte [esi], 0 |
1315 | jnz @f |
1315 | jnz @f |
1316 | or ebx, -1 |
1316 | or ebx, -1 |
1317 | mov eax, 10 ; access denied |
1317 | mov eax, 10 ; access denied |
1318 | ret |
1318 | ret |
1319 | @@: |
1319 | @@: |
1320 | push edi |
1320 | push edi |
1321 | call fd_find_lfn |
1321 | call fd_find_lfn |
1322 | jnc .found |
1322 | jnc .found |
1323 | pop edi |
1323 | pop edi |
1324 | or ebx, -1 |
1324 | or ebx, -1 |
1325 | mov eax, 5 ; file not found |
1325 | mov eax, 5 ; file not found |
1326 | ret |
1326 | ret |
1327 | .found: |
1327 | .found: |
1328 | test ebx, ebx |
1328 | test ebx, ebx |
1329 | jz .l1 |
1329 | jz .l1 |
1330 | cmp dword [ebx+4], 0 |
1330 | cmp dword [ebx+4], 0 |
1331 | jz @f |
1331 | jz @f |
1332 | xor ebx, ebx |
1332 | xor ebx, ebx |
1333 | .reteof: |
1333 | .reteof: |
1334 | mov eax, 6 ; EOF |
1334 | mov eax, 6 ; EOF |
1335 | pop edi |
1335 | pop edi |
1336 | ret |
1336 | ret |
1337 | @@: |
1337 | @@: |
1338 | mov ebx, [ebx] |
1338 | mov ebx, [ebx] |
1339 | .l1: |
1339 | .l1: |
1340 | push ecx edx |
1340 | push ecx edx |
1341 | push 0 |
1341 | push 0 |
1342 | mov eax, [edi+28] |
1342 | mov eax, [edi+28] |
1343 | sub eax, ebx |
1343 | sub eax, ebx |
1344 | jb .eof |
1344 | jb .eof |
1345 | cmp eax, ecx |
1345 | cmp eax, ecx |
1346 | jae @f |
1346 | jae @f |
1347 | mov ecx, eax |
1347 | mov ecx, eax |
1348 | mov byte [esp], 6 ; EOF |
1348 | mov byte [esp], 6 ; EOF |
1349 | @@: |
1349 | @@: |
1350 | movzx edi, word [edi+26] |
1350 | movzx edi, word [edi+26] |
1351 | .new: |
1351 | .new: |
1352 | jecxz .done |
1352 | jecxz .done |
1353 | test edi, edi |
1353 | test edi, edi |
1354 | jz .eof |
1354 | jz .eof |
1355 | cmp edi, 0xFF8 |
1355 | cmp edi, 0xFF8 |
1356 | jae .eof |
1356 | jae .eof |
1357 | sub ebx, 512 |
1357 | sub ebx, 512 |
1358 | jae .skip |
1358 | jae .skip |
1359 | lea eax, [edi+31] |
1359 | lea eax, [edi+31] |
1360 | pusha |
1360 | pusha |
1361 | call read_chs_sector |
1361 | call read_chs_sector |
1362 | popa |
1362 | popa |
1363 | cmp [FDC_Status], 0 |
1363 | cmp [FDC_Status], 0 |
1364 | jnz .err |
1364 | jnz .err |
1365 | lea eax, [FDD_BUFF+ebx+512] |
1365 | lea eax, [FDD_BUFF+ebx+512] |
1366 | neg ebx |
1366 | neg ebx |
1367 | push ecx |
1367 | push ecx |
1368 | cmp ecx, ebx |
1368 | cmp ecx, ebx |
1369 | jbe @f |
1369 | jbe @f |
1370 | mov ecx, ebx |
1370 | mov ecx, ebx |
1371 | @@: |
1371 | @@: |
1372 | mov ebx, edx |
1372 | mov ebx, edx |
1373 | call memmove |
1373 | call memmove |
1374 | add edx, ecx |
1374 | add edx, ecx |
1375 | sub [esp], ecx |
1375 | sub [esp], ecx |
1376 | pop ecx |
1376 | pop ecx |
1377 | xor ebx, ebx |
1377 | xor ebx, ebx |
1378 | .skip: |
1378 | .skip: |
1379 | movzx edi, word [edi*2+FLOPPY_FAT] |
1379 | movzx edi, word [edi*2+FLOPPY_FAT] |
1380 | jmp .new |
1380 | jmp .new |
1381 | .done: |
1381 | .done: |
1382 | mov ebx, edx |
1382 | mov ebx, edx |
1383 | pop eax edx ecx edi |
1383 | pop eax edx ecx edi |
1384 | sub ebx, edx |
1384 | sub ebx, edx |
1385 | ret |
1385 | ret |
1386 | .eof: |
1386 | .eof: |
1387 | mov ebx, edx |
1387 | mov ebx, edx |
1388 | pop eax edx ecx |
1388 | pop eax edx ecx |
1389 | jmp .reteof |
1389 | jmp .reteof |
1390 | .err: |
1390 | .err: |
1391 | mov ebx, edx |
1391 | mov ebx, edx |
1392 | pop eax edx ecx edi |
1392 | pop eax edx ecx edi |
1393 | sub ebx, edx |
1393 | sub ebx, edx |
1394 | mov al, 11 |
1394 | mov al, 11 |
1395 | ret |
1395 | ret |
1396 | 1396 | ||
1397 | ;---------------------------------------------------------------- |
1397 | ;---------------------------------------------------------------- |
1398 | ; |
1398 | ; |
1399 | ; fs_FloppyReadFolder - LFN variant for reading floppy folders |
1399 | ; fs_FloppyReadFolder - LFN variant for reading floppy folders |
1400 | ; |
1400 | ; |
1401 | ; esi points to filename |
1401 | ; esi points to filename |
1402 | ; ebx pointer to structure: 32-bit number = first wanted block, 0+ |
1402 | ; ebx pointer to structure: 32-bit number = first wanted block, 0+ |
1403 | ; & flags (bitfields) |
1403 | ; & flags (bitfields) |
1404 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
1404 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
1405 | ; ecx number of blocks to read, 0+ |
1405 | ; ecx number of blocks to read, 0+ |
1406 | ; edx mem location to return data |
1406 | ; edx mem location to return data |
1407 | ; |
1407 | ; |
1408 | ; ret ebx = blocks read or 0xffffffff folder not found |
1408 | ; ret ebx = blocks read or 0xffffffff folder not found |
1409 | ; eax = 0 ok read or other = errormsg |
1409 | ; eax = 0 ok read or other = errormsg |
1410 | ; |
1410 | ; |
1411 | ;-------------------------------------------------------------- |
1411 | ;-------------------------------------------------------------- |
1412 | fs_FloppyReadFolder: |
1412 | fs_FloppyReadFolder: |
1413 | call read_flp_fat |
1413 | call read_flp_fat |
1414 | push edi |
1414 | push edi |
1415 | cmp byte [esi], 0 |
1415 | cmp byte [esi], 0 |
1416 | jz .root |
1416 | jz .root |
1417 | call fd_find_lfn |
1417 | call fd_find_lfn |
1418 | jnc .found |
1418 | jnc .found |
1419 | pop edi |
1419 | pop edi |
1420 | or ebx, -1 |
1420 | or ebx, -1 |
1421 | mov eax, ERROR_FILE_NOT_FOUND |
1421 | mov eax, ERROR_FILE_NOT_FOUND |
1422 | ret |
1422 | ret |
1423 | .found: |
1423 | .found: |
1424 | test byte [edi+11], 0x10 ; do not allow read files |
1424 | test byte [edi+11], 0x10 ; do not allow read files |
1425 | jnz .found_dir |
1425 | jnz .found_dir |
1426 | pop edi |
1426 | pop edi |
1427 | or ebx, -1 |
1427 | or ebx, -1 |
1428 | mov eax, ERROR_ACCESS_DENIED |
1428 | mov eax, ERROR_ACCESS_DENIED |
1429 | ret |
1429 | ret |
1430 | .found_dir: |
1430 | .found_dir: |
1431 | movzx eax, word [edi+26] |
1431 | movzx eax, word [edi+26] |
1432 | add eax, 31 |
1432 | add eax, 31 |
1433 | push 0 |
1433 | push 0 |
1434 | jmp .doit |
1434 | jmp .doit |
1435 | .root: |
1435 | .root: |
1436 | mov eax, 19 |
1436 | mov eax, 19 |
1437 | push 14 |
1437 | push 14 |
1438 | .doit: |
1438 | .doit: |
1439 | push ecx ebp |
1439 | push ecx ebp |
1440 | sub esp, 262*2 ; reserve space for LFN |
1440 | sub esp, 262*2 ; reserve space for LFN |
1441 | mov ebp, esp |
1441 | mov ebp, esp |
1442 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE names |
1442 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE names |
1443 | mov ebx, [ebx] |
1443 | mov ebx, [ebx] |
1444 | ; init header |
1444 | ; init header |
1445 | push eax ecx |
1445 | push eax ecx |
1446 | mov edi, edx |
1446 | mov edi, edx |
1447 | mov ecx, 32/4 |
1447 | mov ecx, 32/4 |
1448 | xor eax, eax |
1448 | xor eax, eax |
1449 | rep stosd |
1449 | rep stosd |
1450 | pop ecx eax |
1450 | pop ecx eax |
1451 | mov byte [edx], 1 ; version |
1451 | mov byte [edx], 1 ; version |
1452 | mov esi, edi ; esi points to BDFE |
1452 | mov esi, edi ; esi points to BDFE |
1453 | .main_loop: |
1453 | .main_loop: |
1454 | pusha |
1454 | pusha |
1455 | call read_chs_sector |
1455 | call read_chs_sector |
1456 | popa |
1456 | popa |
1457 | cmp [FDC_Status], 0 |
1457 | cmp [FDC_Status], 0 |
1458 | jnz .error |
1458 | jnz .error |
1459 | mov edi, FDD_BUFF |
1459 | mov edi, FDD_BUFF |
1460 | push eax |
1460 | push eax |
1461 | .l1: |
1461 | .l1: |
1462 | call fat_get_name |
1462 | call fat_get_name |
1463 | jc .l2 |
1463 | jc .l2 |
1464 | cmp byte [edi+11], 0xF |
1464 | cmp byte [edi+11], 0xF |
1465 | jnz .do_bdfe |
1465 | jnz .do_bdfe |
1466 | add edi, 0x20 |
1466 | add edi, 0x20 |
1467 | cmp edi, 0xD200 |
1467 | cmp edi, OS_BASE+0xD200 |
1468 | jb .do_bdfe |
1468 | jb .do_bdfe |
1469 | pop eax |
1469 | pop eax |
1470 | inc eax |
1470 | inc eax |
1471 | dec byte [esp+262*2+12] |
1471 | dec byte [esp+262*2+12] |
1472 | jz .done |
1472 | jz .done |
1473 | jns @f |
1473 | jns @f |
1474 | ; read next sector from FAT |
1474 | ; read next sector from FAT |
1475 | mov eax, [(eax-31-1)*2+FLOPPY_FAT] |
1475 | mov eax, [(eax-31-1)*2+FLOPPY_FAT] |
1476 | and eax, 0xFFF |
1476 | and eax, 0xFFF |
1477 | cmp eax, 0xFF8 |
1477 | cmp eax, 0xFF8 |
1478 | jae .done |
1478 | jae .done |
1479 | add eax, 31 |
1479 | add eax, 31 |
1480 | mov byte [esp+262*2+12], 0 |
1480 | mov byte [esp+262*2+12], 0 |
1481 | @@: |
1481 | @@: |
1482 | pusha |
1482 | pusha |
1483 | call read_chs_sector |
1483 | call read_chs_sector |
1484 | popa |
1484 | popa |
1485 | cmp [FDC_Status], 0 |
1485 | cmp [FDC_Status], 0 |
1486 | jnz .error |
1486 | jnz .error |
1487 | mov edi, FDD_BUFF |
1487 | mov edi, FDD_BUFF |
1488 | push eax |
1488 | push eax |
1489 | .do_bdfe: |
1489 | .do_bdfe: |
1490 | inc dword [edx+8] ; new file found |
1490 | inc dword [edx+8] ; new file found |
1491 | dec ebx |
1491 | dec ebx |
1492 | jns .l2 |
1492 | jns .l2 |
1493 | dec ecx |
1493 | dec ecx |
1494 | js .l2 |
1494 | js .l2 |
1495 | inc dword [edx+4] ; new file block copied |
1495 | inc dword [edx+4] ; new file block copied |
1496 | call fat_entry_to_bdfe |
1496 | call fat_entry_to_bdfe |
1497 | .l2: |
1497 | .l2: |
1498 | add edi, 0x20 |
1498 | add edi, 0x20 |
1499 | cmp edi, 0xD200 |
1499 | cmp edi, OS_BASE+0xD200 |
1500 | jb .l1 |
1500 | jb .l1 |
1501 | pop eax |
1501 | pop eax |
1502 | inc eax |
1502 | inc eax |
1503 | dec byte [esp+262*2+12] |
1503 | dec byte [esp+262*2+12] |
1504 | jz .done |
1504 | jz .done |
1505 | jns @f |
1505 | jns @f |
1506 | ; read next sector from FAT |
1506 | ; read next sector from FAT |
1507 | mov eax, [(eax-31-1)*2+FLOPPY_FAT] |
1507 | mov eax, [(eax-31-1)*2+FLOPPY_FAT] |
1508 | and eax, 0xFFF |
1508 | and eax, 0xFFF |
1509 | cmp eax, 0xFF8 |
1509 | cmp eax, 0xFF8 |
1510 | jae .done |
1510 | jae .done |
1511 | add eax, 31 |
1511 | add eax, 31 |
1512 | mov byte [esp+262*2+12], 0 |
1512 | mov byte [esp+262*2+12], 0 |
1513 | @@: |
1513 | @@: |
1514 | jmp .main_loop |
1514 | jmp .main_loop |
1515 | .error: |
1515 | .error: |
1516 | add esp, 262*2+4 |
1516 | add esp, 262*2+4 |
1517 | pop ebp ecx edi edi |
1517 | pop ebp ecx edi edi |
1518 | or ebx, -1 |
1518 | or ebx, -1 |
1519 | mov eax, ERROR_FILE_NOT_FOUND |
1519 | mov eax, ERROR_FILE_NOT_FOUND |
1520 | ret |
1520 | ret |
1521 | .done: |
1521 | .done: |
1522 | add esp, 262*2+4 |
1522 | add esp, 262*2+4 |
1523 | pop ebp |
1523 | pop ebp |
1524 | mov ebx, [edx+4] |
1524 | mov ebx, [edx+4] |
1525 | xor eax, eax |
1525 | xor eax, eax |
1526 | dec ecx |
1526 | dec ecx |
1527 | js @f |
1527 | js @f |
1528 | mov al, ERROR_END_OF_FILE |
1528 | mov al, ERROR_END_OF_FILE |
1529 | @@: |
1529 | @@: |
1530 | pop ecx edi edi |
1530 | pop ecx edi edi |
1531 | ret |
1531 | ret |
1532 | 1532 | ||
1533 | ;---------------------------------------------------------------- |
1533 | ;---------------------------------------------------------------- |
1534 | ; |
1534 | ; |
1535 | ; fs_FloppyRewrite - LFN variant for writing sys floppy |
1535 | ; fs_FloppyRewrite - LFN variant for writing sys floppy |
1536 | ; |
1536 | ; |
1537 | ; esi points to filename |
1537 | ; esi points to filename |
1538 | ; ebx ignored (reserved) |
1538 | ; ebx ignored (reserved) |
1539 | ; ecx number of bytes to write, 0+ |
1539 | ; ecx number of bytes to write, 0+ |
1540 | ; edx mem location to data |
1540 | ; edx mem location to data |
1541 | ; |
1541 | ; |
1542 | ; ret ebx = number of written bytes |
1542 | ; ret ebx = number of written bytes |
1543 | ; eax = 0 ok read or other = errormsg |
1543 | ; eax = 0 ok read or other = errormsg |
1544 | ; |
1544 | ; |
1545 | ;-------------------------------------------------------------- |
1545 | ;-------------------------------------------------------------- |
1546 | @@: |
1546 | @@: |
1547 | mov eax, ERROR_ACCESS_DENIED |
1547 | mov eax, ERROR_ACCESS_DENIED |
1548 | xor ebx, ebx |
1548 | xor ebx, ebx |
1549 | ret |
1549 | ret |
1550 | fsfrfe2: |
1550 | fsfrfe2: |
1551 | popad |
1551 | popad |
1552 | fsfrfe: |
1552 | fsfrfe: |
1553 | mov eax, 11 |
1553 | mov eax, 11 |
1554 | xor ebx, ebx |
1554 | xor ebx, ebx |
1555 | ret |
1555 | ret |
1556 | 1556 | ||
1557 | fs_FloppyCreateFolder: |
1557 | fs_FloppyCreateFolder: |
1558 | mov al, 1 |
1558 | mov al, 1 |
1559 | jmp fs_FloppyRewrite.common |
1559 | jmp fs_FloppyRewrite.common |
1560 | 1560 | ||
1561 | fs_FloppyRewrite: |
1561 | fs_FloppyRewrite: |
1562 | xor eax, eax |
1562 | xor eax, eax |
1563 | .common: |
1563 | .common: |
1564 | cmp byte [esi], 0 |
1564 | cmp byte [esi], 0 |
1565 | jz @b |
1565 | jz @b |
1566 | call read_flp_fat |
1566 | call read_flp_fat |
1567 | cmp [FDC_Status], 0 |
1567 | cmp [FDC_Status], 0 |
1568 | jnz fsfrfe |
1568 | jnz fsfrfe |
1569 | pushad |
1569 | pushad |
1570 | xor ebp, ebp |
1570 | xor ebp, ebp |
1571 | push esi |
1571 | push esi |
1572 | @@: |
1572 | @@: |
1573 | lodsb |
1573 | lodsb |
1574 | test al, al |
1574 | test al, al |
1575 | jz @f |
1575 | jz @f |
1576 | cmp al, '/' |
1576 | cmp al, '/' |
1577 | jnz @b |
1577 | jnz @b |
1578 | lea ebp, [esi-1] |
1578 | lea ebp, [esi-1] |
1579 | jmp @b |
1579 | jmp @b |
1580 | @@: |
1580 | @@: |
1581 | pop esi |
1581 | pop esi |
1582 | test ebp, ebp |
1582 | test ebp, ebp |
1583 | jnz .noroot |
1583 | jnz .noroot |
1584 | call read_flp_root |
1584 | call read_flp_root |
1585 | cmp [FDC_Status], 0 |
1585 | cmp [FDC_Status], 0 |
1586 | jnz fsfrfe2 |
1586 | jnz fsfrfe2 |
1587 | push flp_rootmem_extend_dir |
1587 | push flp_rootmem_extend_dir |
1588 | push flp_rootmem_end_write |
1588 | push flp_rootmem_end_write |
1589 | push flp_rootmem_next_write |
1589 | push flp_rootmem_next_write |
1590 | push flp_rootmem_begin_write |
1590 | push flp_rootmem_begin_write |
1591 | xor ebp, ebp |
1591 | xor ebp, ebp |
1592 | push ebp |
1592 | push ebp |
1593 | push flp_rootmem_first |
1593 | push flp_rootmem_first |
1594 | push flp_rootmem_next |
1594 | push flp_rootmem_next |
1595 | jmp .common1 |
1595 | jmp .common1 |
1596 | .noroot: |
1596 | .noroot: |
1597 | mov eax, ERROR_ACCESS_DENIED |
1597 | mov eax, ERROR_ACCESS_DENIED |
1598 | cmp byte [ebp+1], 0 |
1598 | cmp byte [ebp+1], 0 |
1599 | jz .ret1 |
1599 | jz .ret1 |
1600 | ; check existence |
1600 | ; check existence |
1601 | mov byte [ebp], 0 |
1601 | mov byte [ebp], 0 |
1602 | call fd_find_lfn |
1602 | call fd_find_lfn |
1603 | mov byte [ebp], '/' |
1603 | mov byte [ebp], '/' |
1604 | lea esi, [ebp+1] |
1604 | lea esi, [ebp+1] |
1605 | jnc @f |
1605 | jnc @f |
1606 | mov eax, ERROR_FILE_NOT_FOUND |
1606 | mov eax, ERROR_FILE_NOT_FOUND |
1607 | .ret1: |
1607 | .ret1: |
1608 | mov [esp+28], eax |
1608 | mov [esp+28], eax |
1609 | popad |
1609 | popad |
1610 | xor ebx, ebx |
1610 | xor ebx, ebx |
1611 | ret |
1611 | ret |
1612 | @@: |
1612 | @@: |
1613 | test byte [edi+11], 0x10 ; must be directory |
1613 | test byte [edi+11], 0x10 ; must be directory |
1614 | mov eax, ERROR_ACCESS_DENIED |
1614 | mov eax, ERROR_ACCESS_DENIED |
1615 | jz .ret1 |
1615 | jz .ret1 |
1616 | movzx ebp, word [edi+26] ; ebp=cluster |
1616 | movzx ebp, word [edi+26] ; ebp=cluster |
1617 | mov eax, ERROR_FAT_TABLE |
1617 | mov eax, ERROR_FAT_TABLE |
1618 | cmp ebp, 2 |
1618 | cmp ebp, 2 |
1619 | jb .ret1 |
1619 | jb .ret1 |
1620 | cmp ebp, 2849 |
1620 | cmp ebp, 2849 |
1621 | jae .ret1 |
1621 | jae .ret1 |
1622 | push flp_notroot_extend_dir |
1622 | push flp_notroot_extend_dir |
1623 | push flp_notroot_end_write |
1623 | push flp_notroot_end_write |
1624 | push flp_notroot_next_write |
1624 | push flp_notroot_next_write |
1625 | push flp_notroot_begin_write |
1625 | push flp_notroot_begin_write |
1626 | push ebp |
1626 | push ebp |
1627 | push flp_notroot_first |
1627 | push flp_notroot_first |
1628 | push flp_notroot_next |
1628 | push flp_notroot_next |
1629 | .common1: |
1629 | .common1: |
1630 | call fat_find_lfn |
1630 | call fat_find_lfn |
1631 | jc .notfound |
1631 | jc .notfound |
1632 | ; found |
1632 | ; found |
1633 | test byte [edi+11], 10h |
1633 | test byte [edi+11], 10h |
1634 | jz .exists_file |
1634 | jz .exists_file |
1635 | ; found directory; if we are creating directory, return OK, |
1635 | ; found directory; if we are creating directory, return OK, |
1636 | ; if we are creating file, say "access denied" |
1636 | ; if we are creating file, say "access denied" |
1637 | add esp, 28 |
1637 | add esp, 28 |
1638 | popad |
1638 | popad |
1639 | test al, al |
1639 | test al, al |
1640 | mov eax, ERROR_ACCESS_DENIED |
1640 | mov eax, ERROR_ACCESS_DENIED |
1641 | jz @f |
1641 | jz @f |
1642 | mov al, 0 |
1642 | mov al, 0 |
1643 | @@: |
1643 | @@: |
1644 | xor ebx, ebx |
1644 | xor ebx, ebx |
1645 | ret |
1645 | ret |
1646 | .exists_file: |
1646 | .exists_file: |
1647 | ; found file; if we are creating directory, return "access denied", |
1647 | ; found file; if we are creating directory, return "access denied", |
1648 | ; if we are creating file, delete existing file and continue |
1648 | ; if we are creating file, delete existing file and continue |
1649 | cmp byte [esp+28+28], 0 |
1649 | cmp byte [esp+28+28], 0 |
1650 | jz @f |
1650 | jz @f |
1651 | add esp, 28 |
1651 | add esp, 28 |
1652 | popad |
1652 | popad |
1653 | mov eax, ERROR_ACCESS_DENIED |
1653 | mov eax, ERROR_ACCESS_DENIED |
1654 | xor ebx, ebx |
1654 | xor ebx, ebx |
1655 | ret |
1655 | ret |
1656 | @@: |
1656 | @@: |
1657 | ; delete FAT chain |
1657 | ; delete FAT chain |
1658 | push edi |
1658 | push edi |
1659 | xor eax, eax |
1659 | xor eax, eax |
1660 | mov dword [edi+28], eax ; zero size |
1660 | mov dword [edi+28], eax ; zero size |
1661 | xchg ax, word [edi+26] ; start cluster |
1661 | xchg ax, word [edi+26] ; start cluster |
1662 | test eax, eax |
1662 | test eax, eax |
1663 | jz .done1 |
1663 | jz .done1 |
1664 | @@: |
1664 | @@: |
1665 | cmp eax, 0xFF8 |
1665 | cmp eax, 0xFF8 |
1666 | jae .done1 |
1666 | jae .done1 |
1667 | lea edi, [FLOPPY_FAT + eax*2] ; position in FAT |
1667 | lea edi, [FLOPPY_FAT + eax*2] ; position in FAT |
1668 | xor eax, eax |
1668 | xor eax, eax |
1669 | xchg ax, [edi] |
1669 | xchg ax, [edi] |
1670 | jmp @b |
1670 | jmp @b |
1671 | .done1: |
1671 | .done1: |
1672 | pop edi |
1672 | pop edi |
1673 | call get_time_for_file |
1673 | call get_time_for_file |
1674 | mov [edi+22], ax |
1674 | mov [edi+22], ax |
1675 | call get_date_for_file |
1675 | call get_date_for_file |
1676 | mov [edi+24], ax |
1676 | mov [edi+24], ax |
1677 | mov [edi+18], ax |
1677 | mov [edi+18], ax |
1678 | or byte [edi+11], 20h ; set 'archive' attribute |
1678 | or byte [edi+11], 20h ; set 'archive' attribute |
1679 | jmp .doit |
1679 | jmp .doit |
1680 | .notfound: |
1680 | .notfound: |
1681 | ; file is not found; generate short name |
1681 | ; file is not found; generate short name |
1682 | call fat_name_is_legal |
1682 | call fat_name_is_legal |
1683 | jc @f |
1683 | jc @f |
1684 | add esp, 28 |
1684 | add esp, 28 |
1685 | popad |
1685 | popad |
1686 | mov eax, ERROR_FILE_NOT_FOUND |
1686 | mov eax, ERROR_FILE_NOT_FOUND |
1687 | xor ebx, ebx |
1687 | xor ebx, ebx |
1688 | ret |
1688 | ret |
1689 | @@: |
1689 | @@: |
1690 | sub esp, 12 |
1690 | sub esp, 12 |
1691 | mov edi, esp |
1691 | mov edi, esp |
1692 | call fat_gen_short_name |
1692 | call fat_gen_short_name |
1693 | .test_short_name_loop: |
1693 | .test_short_name_loop: |
1694 | push esi edi ecx |
1694 | push esi edi ecx |
1695 | mov esi, edi |
1695 | mov esi, edi |
1696 | lea eax, [esp+12+12+8] |
1696 | lea eax, [esp+12+12+8] |
1697 | mov [eax], ebp |
1697 | mov [eax], ebp |
1698 | call dword [eax-4] |
1698 | call dword [eax-4] |
1699 | jc .found |
1699 | jc .found |
1700 | .test_short_name_entry: |
1700 | .test_short_name_entry: |
1701 | cmp byte [edi+11], 0xF |
1701 | cmp byte [edi+11], 0xF |
1702 | jz .test_short_name_cont |
1702 | jz .test_short_name_cont |
1703 | mov ecx, 11 |
1703 | mov ecx, 11 |
1704 | push esi edi |
1704 | push esi edi |
1705 | repz cmpsb |
1705 | repz cmpsb |
1706 | pop edi esi |
1706 | pop edi esi |
1707 | jz .short_name_found |
1707 | jz .short_name_found |
1708 | .test_short_name_cont: |
1708 | .test_short_name_cont: |
1709 | lea eax, [esp+12+12+8] |
1709 | lea eax, [esp+12+12+8] |
1710 | call dword [eax-8] |
1710 | call dword [eax-8] |
1711 | jnc .test_short_name_entry |
1711 | jnc .test_short_name_entry |
1712 | jmp .found |
1712 | jmp .found |
1713 | .short_name_found: |
1713 | .short_name_found: |
1714 | pop ecx edi esi |
1714 | pop ecx edi esi |
1715 | call fat_next_short_name |
1715 | call fat_next_short_name |
1716 | jnc .test_short_name_loop |
1716 | jnc .test_short_name_loop |
1717 | .disk_full: |
1717 | .disk_full: |
1718 | add esp, 12+28 |
1718 | add esp, 12+28 |
1719 | popa |
1719 | popa |
1720 | mov eax, ERROR_DISK_FULL |
1720 | mov eax, ERROR_DISK_FULL |
1721 | xor ebx, ebx |
1721 | xor ebx, ebx |
1722 | ret |
1722 | ret |
1723 | .found: |
1723 | .found: |
1724 | pop ecx edi esi |
1724 | pop ecx edi esi |
1725 | ; now find space in directory |
1725 | ; now find space in directory |
1726 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
1726 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
1727 | mov al, '~' |
1727 | mov al, '~' |
1728 | push ecx edi |
1728 | push ecx edi |
1729 | mov ecx, 8 |
1729 | mov ecx, 8 |
1730 | repnz scasb |
1730 | repnz scasb |
1731 | push 1 |
1731 | push 1 |
1732 | pop eax ; 1 entry |
1732 | pop eax ; 1 entry |
1733 | jnz .notilde |
1733 | jnz .notilde |
1734 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
1734 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
1735 | xor eax, eax |
1735 | xor eax, eax |
1736 | @@: |
1736 | @@: |
1737 | cmp byte [esi], 0 |
1737 | cmp byte [esi], 0 |
1738 | jz @f |
1738 | jz @f |
1739 | inc esi |
1739 | inc esi |
1740 | inc eax |
1740 | inc eax |
1741 | jmp @b |
1741 | jmp @b |
1742 | @@: |
1742 | @@: |
1743 | sub esi, eax |
1743 | sub esi, eax |
1744 | add eax, 12+13 |
1744 | add eax, 12+13 |
1745 | mov ecx, 13 |
1745 | mov ecx, 13 |
1746 | push edx |
1746 | push edx |
1747 | cdq |
1747 | cdq |
1748 | div ecx |
1748 | div ecx |
1749 | pop edx |
1749 | pop edx |
1750 | .notilde: |
1750 | .notilde: |
1751 | push -1 |
1751 | push -1 |
1752 | push -1 |
1752 | push -1 |
1753 | ; find |
1753 | ; find |
1754 | xor ecx, ecx |
1754 | xor ecx, ecx |
1755 | push eax |
1755 | push eax |
1756 | lea eax, [esp+12+8+12+8] |
1756 | lea eax, [esp+12+8+12+8] |
1757 | mov [eax], ebp |
1757 | mov [eax], ebp |
1758 | call dword [eax-4] |
1758 | call dword [eax-4] |
1759 | pop eax |
1759 | pop eax |
1760 | jnc .scan_dir |
1760 | jnc .scan_dir |
1761 | .fsfrfe3: |
1761 | .fsfrfe3: |
1762 | add esp, 8+8+12+28 |
1762 | add esp, 8+8+12+28 |
1763 | popad |
1763 | popad |
1764 | mov eax, 11 |
1764 | mov eax, 11 |
1765 | xor ebx, ebx |
1765 | xor ebx, ebx |
1766 | ret |
1766 | ret |
1767 | .scan_dir: |
1767 | .scan_dir: |
1768 | cmp byte [edi], 0 |
1768 | cmp byte [edi], 0 |
1769 | jz .free |
1769 | jz .free |
1770 | cmp byte [edi], 0xE5 |
1770 | cmp byte [edi], 0xE5 |
1771 | jz .free |
1771 | jz .free |
1772 | xor ecx, ecx |
1772 | xor ecx, ecx |
1773 | .scan_cont: |
1773 | .scan_cont: |
1774 | push eax |
1774 | push eax |
1775 | lea eax, [esp+12+8+12+8] |
1775 | lea eax, [esp+12+8+12+8] |
1776 | call dword [eax-8] |
1776 | call dword [eax-8] |
1777 | pop eax |
1777 | pop eax |
1778 | jnc .scan_dir |
1778 | jnc .scan_dir |
1779 | cmp [FDC_Status], 0 |
1779 | cmp [FDC_Status], 0 |
1780 | jnz .fsfrfe3 |
1780 | jnz .fsfrfe3 |
1781 | push eax |
1781 | push eax |
1782 | lea eax, [esp+12+8+12+8] |
1782 | lea eax, [esp+12+8+12+8] |
1783 | call dword [eax+16] ; extend directory |
1783 | call dword [eax+16] ; extend directory |
1784 | pop eax |
1784 | pop eax |
1785 | jnc .scan_dir |
1785 | jnc .scan_dir |
1786 | add esp, 8+8+12+28 |
1786 | add esp, 8+8+12+28 |
1787 | popad |
1787 | popad |
1788 | mov eax, ERROR_DISK_FULL |
1788 | mov eax, ERROR_DISK_FULL |
1789 | xor ebx, ebx |
1789 | xor ebx, ebx |
1790 | ret |
1790 | ret |
1791 | .free: |
1791 | .free: |
1792 | test ecx, ecx |
1792 | test ecx, ecx |
1793 | jnz @f |
1793 | jnz @f |
1794 | mov [esp], edi |
1794 | mov [esp], edi |
1795 | mov ecx, [esp+8+8+12+8] |
1795 | mov ecx, [esp+8+8+12+8] |
1796 | mov [esp+4], ecx |
1796 | mov [esp+4], ecx |
1797 | xor ecx, ecx |
1797 | xor ecx, ecx |
1798 | @@: |
1798 | @@: |
1799 | inc ecx |
1799 | inc ecx |
1800 | cmp ecx, eax |
1800 | cmp ecx, eax |
1801 | jb .scan_cont |
1801 | jb .scan_cont |
1802 | ; found! |
1802 | ; found! |
1803 | ; calculate name checksum |
1803 | ; calculate name checksum |
1804 | push esi ecx |
1804 | push esi ecx |
1805 | mov esi, [esp+8+8] |
1805 | mov esi, [esp+8+8] |
1806 | mov ecx, 11 |
1806 | mov ecx, 11 |
1807 | xor eax, eax |
1807 | xor eax, eax |
1808 | @@: |
1808 | @@: |
1809 | ror al, 1 |
1809 | ror al, 1 |
1810 | add al, [esi] |
1810 | add al, [esi] |
1811 | inc esi |
1811 | inc esi |
1812 | loop @b |
1812 | loop @b |
1813 | pop ecx esi |
1813 | pop ecx esi |
1814 | pop edi |
1814 | pop edi |
1815 | pop dword [esp+8+12+8] |
1815 | pop dword [esp+8+12+8] |
1816 | ; edi points to first entry in free chunk |
1816 | ; edi points to first entry in free chunk |
1817 | dec ecx |
1817 | dec ecx |
1818 | jz .nolfn |
1818 | jz .nolfn |
1819 | push esi |
1819 | push esi |
1820 | push eax |
1820 | push eax |
1821 | lea eax, [esp+8+8+12+8] |
1821 | lea eax, [esp+8+8+12+8] |
1822 | call dword [eax+4] ; begin write |
1822 | call dword [eax+4] ; begin write |
1823 | mov al, 40h |
1823 | mov al, 40h |
1824 | .writelfn: |
1824 | .writelfn: |
1825 | or al, cl |
1825 | or al, cl |
1826 | mov esi, [esp+4] |
1826 | mov esi, [esp+4] |
1827 | push ecx |
1827 | push ecx |
1828 | dec ecx |
1828 | dec ecx |
1829 | imul ecx, 13 |
1829 | imul ecx, 13 |
1830 | add esi, ecx |
1830 | add esi, ecx |
1831 | stosb |
1831 | stosb |
1832 | mov cl, 5 |
1832 | mov cl, 5 |
1833 | call fs_RamdiskRewrite.read_symbols |
1833 | call fs_RamdiskRewrite.read_symbols |
1834 | mov ax, 0xF |
1834 | mov ax, 0xF |
1835 | stosw |
1835 | stosw |
1836 | mov al, [esp+4] |
1836 | mov al, [esp+4] |
1837 | stosb |
1837 | stosb |
1838 | mov cl, 6 |
1838 | mov cl, 6 |
1839 | call fs_RamdiskRewrite.read_symbols |
1839 | call fs_RamdiskRewrite.read_symbols |
1840 | xor eax, eax |
1840 | xor eax, eax |
1841 | stosw |
1841 | stosw |
1842 | mov cl, 2 |
1842 | mov cl, 2 |
1843 | call fs_RamdiskRewrite.read_symbols |
1843 | call fs_RamdiskRewrite.read_symbols |
1844 | pop ecx |
1844 | pop ecx |
1845 | lea eax, [esp+8+8+12+8] |
1845 | lea eax, [esp+8+8+12+8] |
1846 | call dword [eax+8] ; next write |
1846 | call dword [eax+8] ; next write |
1847 | xor eax, eax |
1847 | xor eax, eax |
1848 | loop .writelfn |
1848 | loop .writelfn |
1849 | pop eax |
1849 | pop eax |
1850 | pop esi |
1850 | pop esi |
1851 | ; lea eax, [esp+8+12+8] |
1851 | ; lea eax, [esp+8+12+8] |
1852 | ; call dword [eax+12] ; end write |
1852 | ; call dword [eax+12] ; end write |
1853 | .nolfn: |
1853 | .nolfn: |
1854 | xchg esi, [esp] |
1854 | xchg esi, [esp] |
1855 | mov ecx, 11 |
1855 | mov ecx, 11 |
1856 | rep movsb |
1856 | rep movsb |
1857 | mov word [edi], 20h ; attributes |
1857 | mov word [edi], 20h ; attributes |
1858 | sub edi, 11 |
1858 | sub edi, 11 |
1859 | pop esi ecx |
1859 | pop esi ecx |
1860 | add esp, 12 |
1860 | add esp, 12 |
1861 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
1861 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
1862 | call get_time_for_file |
1862 | call get_time_for_file |
1863 | mov [edi+14], ax ; creation time |
1863 | mov [edi+14], ax ; creation time |
1864 | mov [edi+22], ax ; last write time |
1864 | mov [edi+22], ax ; last write time |
1865 | call get_date_for_file |
1865 | call get_date_for_file |
1866 | mov [edi+16], ax ; creation date |
1866 | mov [edi+16], ax ; creation date |
1867 | mov [edi+24], ax ; last write date |
1867 | mov [edi+24], ax ; last write date |
1868 | mov [edi+18], ax ; last access date |
1868 | mov [edi+18], ax ; last access date |
1869 | and word [edi+20], 0 ; high word of cluster |
1869 | and word [edi+20], 0 ; high word of cluster |
1870 | and word [edi+26], 0 ; low word of cluster - to be filled |
1870 | and word [edi+26], 0 ; low word of cluster - to be filled |
1871 | and dword [edi+28], 0 ; file size - to be filled |
1871 | and dword [edi+28], 0 ; file size - to be filled |
1872 | cmp byte [esp+28+28], 0 |
1872 | cmp byte [esp+28+28], 0 |
1873 | jz .doit |
1873 | jz .doit |
1874 | ; create directory |
1874 | ; create directory |
1875 | mov byte [edi+11], 10h ; attributes: folder |
1875 | mov byte [edi+11], 10h ; attributes: folder |
1876 | mov ecx, 32*2 |
1876 | mov ecx, 32*2 |
1877 | mov edx, edi |
1877 | mov edx, edi |
1878 | .doit: |
1878 | .doit: |
1879 | lea eax, [esp+8] |
1879 | lea eax, [esp+8] |
1880 | call dword [eax+12] ; flush directory |
1880 | call dword [eax+12] ; flush directory |
1881 | push ecx |
1881 | push ecx |
1882 | push edi |
1882 | push edi |
1883 | push 0 |
1883 | push 0 |
1884 | mov esi, edx |
1884 | mov esi, edx |
1885 | test ecx, ecx |
1885 | test ecx, ecx |
1886 | jz .done |
1886 | jz .done |
1887 | mov ecx, 2849 |
1887 | mov ecx, 2849 |
1888 | mov edi, FLOPPY_FAT |
1888 | mov edi, FLOPPY_FAT |
1889 | push 0 ; first cluster |
1889 | push 0 ; first cluster |
1890 | .write_loop: |
1890 | .write_loop: |
1891 | ; allocate new cluster |
1891 | ; allocate new cluster |
1892 | xor eax, eax |
1892 | xor eax, eax |
1893 | repnz scasw |
1893 | repnz scasw |
1894 | mov al, ERROR_DISK_FULL |
1894 | mov al, ERROR_DISK_FULL |
1895 | jnz .ret |
1895 | jnz .ret |
1896 | dec edi |
1896 | dec edi |
1897 | dec edi |
1897 | dec edi |
- | 1898 | ||
- | 1899 | mov eax, edi |
|
1898 | lea eax, [edi-(FLOPPY_FAT)] |
1900 | sub eax, FLOPPY_FAT |
- | 1901 | ||
1899 | shr eax, 1 ; eax = cluster |
1902 | shr eax, 1 ; eax = cluster |
1900 | mov word [edi], 0xFFF ; mark as last cluster |
1903 | mov word [edi], 0xFFF ; mark as last cluster |
1901 | xchg edi, [esp+4] |
1904 | xchg edi, [esp+4] |
1902 | cmp dword [esp], 0 |
1905 | cmp dword [esp], 0 |
1903 | jz .first |
1906 | jz .first |
1904 | stosw |
1907 | stosw |
1905 | jmp @f |
1908 | jmp @f |
1906 | .first: |
1909 | .first: |
1907 | mov [esp], eax |
1910 | mov [esp], eax |
1908 | @@: |
1911 | @@: |
1909 | mov edi, [esp+4] |
1912 | mov edi, [esp+4] |
1910 | inc ecx |
1913 | inc ecx |
1911 | ; write data |
1914 | ; write data |
1912 | push ecx edi |
1915 | push ecx edi |
1913 | mov ecx, 512 |
1916 | mov ecx, 512 |
1914 | cmp dword [esp+20], ecx |
1917 | cmp dword [esp+20], ecx |
1915 | jae @f |
1918 | jae @f |
1916 | mov ecx, [esp+20] |
1919 | mov ecx, [esp+20] |
1917 | @@: |
1920 | @@: |
1918 | mov edi, FDD_BUFF |
1921 | mov edi, FDD_BUFF |
1919 | cmp byte [esp+24+28+28], 0 |
1922 | cmp byte [esp+24+28+28], 0 |
1920 | jnz .writedir |
1923 | jnz .writedir |
1921 | push ecx |
1924 | push ecx |
1922 | rep movsb |
1925 | rep movsb |
1923 | pop ecx |
1926 | pop ecx |
1924 | .writedircont: |
1927 | .writedircont: |
1925 | push ecx |
1928 | push ecx |
1926 | sub ecx, 512 |
1929 | sub ecx, 512 |
1927 | neg ecx |
1930 | neg ecx |
1928 | push eax |
1931 | push eax |
1929 | xor eax, eax |
1932 | xor eax, eax |
1930 | rep stosb |
1933 | rep stosb |
1931 | pop eax |
1934 | pop eax |
1932 | add eax, 31 |
1935 | add eax, 31 |
1933 | pusha |
1936 | pusha |
1934 | call save_chs_sector |
1937 | call save_chs_sector |
1935 | popa |
1938 | popa |
1936 | pop ecx |
1939 | pop ecx |
1937 | cmp [FDC_Status], 0 |
1940 | cmp [FDC_Status], 0 |
1938 | jnz .diskerr |
1941 | jnz .diskerr |
1939 | sub [esp+20], ecx |
1942 | sub [esp+20], ecx |
1940 | pop edi ecx |
1943 | pop edi ecx |
1941 | jnz .write_loop |
1944 | jnz .write_loop |
1942 | .done: |
1945 | .done: |
1943 | xor eax, eax |
1946 | xor eax, eax |
1944 | .ret: |
1947 | .ret: |
1945 | pop ebx edi edi ecx |
1948 | pop ebx edi edi ecx |
1946 | mov [esp+28+28], eax |
1949 | mov [esp+28+28], eax |
1947 | lea eax, [esp+8] |
1950 | lea eax, [esp+8] |
1948 | call dword [eax+4] |
1951 | call dword [eax+4] |
1949 | mov [edi+26], bx |
1952 | mov [edi+26], bx |
1950 | mov ebx, esi |
1953 | mov ebx, esi |
1951 | sub ebx, edx |
1954 | sub ebx, edx |
1952 | mov [edi+28], ebx |
1955 | mov [edi+28], ebx |
1953 | call dword [eax+12] |
1956 | call dword [eax+12] |
1954 | mov [esp+28+16], ebx |
1957 | mov [esp+28+16], ebx |
1955 | test ebp, ebp |
1958 | test ebp, ebp |
1956 | jnz @f |
1959 | jnz @f |
1957 | call save_flp_root |
1960 | call save_flp_root |
1958 | @@: |
1961 | @@: |
1959 | add esp, 28 |
1962 | add esp, 28 |
1960 | cmp [FDC_Status], 0 |
1963 | cmp [FDC_Status], 0 |
1961 | jnz .err3 |
1964 | jnz .err3 |
1962 | call save_flp_fat |
1965 | call save_flp_fat |
1963 | cmp [FDC_Status], 0 |
1966 | cmp [FDC_Status], 0 |
1964 | jnz .err3 |
1967 | jnz .err3 |
1965 | popa |
1968 | popa |
1966 | ret |
1969 | ret |
1967 | .err3: |
1970 | .err3: |
1968 | popa |
1971 | popa |
1969 | mov al, 11 |
1972 | mov al, 11 |
1970 | xor ebx, ebx |
1973 | xor ebx, ebx |
1971 | ret |
1974 | ret |
1972 | .diskerr: |
1975 | .diskerr: |
1973 | sub esi, ecx |
1976 | sub esi, ecx |
1974 | mov eax, 11 |
1977 | mov eax, 11 |
1975 | pop edi ecx |
1978 | pop edi ecx |
1976 | jmp .ret |
1979 | jmp .ret |
1977 | .writedir: |
1980 | .writedir: |
1978 | push ecx |
1981 | push ecx |
1979 | mov ecx, 32/4 |
1982 | mov ecx, 32/4 |
1980 | push ecx esi |
1983 | push ecx esi |
1981 | rep movsd |
1984 | rep movsd |
1982 | pop esi ecx |
1985 | pop esi ecx |
1983 | mov dword [edi-32], '. ' |
1986 | mov dword [edi-32], '. ' |
1984 | mov dword [edi-32+4], ' ' |
1987 | mov dword [edi-32+4], ' ' |
1985 | mov dword [edi-32+8], ' ' |
1988 | mov dword [edi-32+8], ' ' |
1986 | mov byte [edi-32+11], 10h |
1989 | mov byte [edi-32+11], 10h |
1987 | mov word [edi-32+26], ax |
1990 | mov word [edi-32+26], ax |
1988 | push esi |
1991 | push esi |
1989 | rep movsd |
1992 | rep movsd |
1990 | pop esi |
1993 | pop esi |
1991 | mov dword [edi-32], '.. ' |
1994 | mov dword [edi-32], '.. ' |
1992 | mov dword [edi-32+4], ' ' |
1995 | mov dword [edi-32+4], ' ' |
1993 | mov dword [edi-32+8], ' ' |
1996 | mov dword [edi-32+8], ' ' |
1994 | mov byte [edi-32+11], 10h |
1997 | mov byte [edi-32+11], 10h |
1995 | mov ecx, [esp+28+8] |
1998 | mov ecx, [esp+28+8] |
1996 | mov word [edi-32+26], cx |
1999 | mov word [edi-32+26], cx |
1997 | pop ecx |
2000 | pop ecx |
1998 | jmp .writedircont |
2001 | jmp .writedircont |
1999 | 2002 | ||
2000 | ;---------------------------------------------------------------- |
2003 | ;---------------------------------------------------------------- |
2001 | ; |
2004 | ; |
2002 | ; fs_FloppyWrite - LFN variant for writing to floppy |
2005 | ; fs_FloppyWrite - LFN variant for writing to floppy |
2003 | ; |
2006 | ; |
2004 | ; esi points to filename |
2007 | ; esi points to filename |
2005 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
2008 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
2006 | ; may be ebx=0 - start from first byte |
2009 | ; may be ebx=0 - start from first byte |
2007 | ; ecx number of bytes to write, 0+ |
2010 | ; ecx number of bytes to write, 0+ |
2008 | ; edx mem location to data |
2011 | ; edx mem location to data |
2009 | ; |
2012 | ; |
2010 | ; ret ebx = bytes written (maybe 0) |
2013 | ; ret ebx = bytes written (maybe 0) |
2011 | ; eax = 0 ok write or other = errormsg |
2014 | ; eax = 0 ok write or other = errormsg |
2012 | ; |
2015 | ; |
2013 | ;-------------------------------------------------------------- |
2016 | ;-------------------------------------------------------------- |
2014 | 2017 | ||
2015 | @@: |
2018 | @@: |
2016 | push ERROR_ACCESS_DENIED |
2019 | push ERROR_ACCESS_DENIED |
2017 | fs_FloppyWrite.ret0: |
2020 | fs_FloppyWrite.ret0: |
2018 | pop eax |
2021 | pop eax |
2019 | xor ebx, ebx |
2022 | xor ebx, ebx |
2020 | ret |
2023 | ret |
2021 | 2024 | ||
2022 | fs_FloppyWrite.ret11: |
2025 | fs_FloppyWrite.ret11: |
2023 | push 11 |
2026 | push 11 |
2024 | jmp fs_FloppyWrite.ret0 |
2027 | jmp fs_FloppyWrite.ret0 |
2025 | 2028 | ||
2026 | fs_FloppyWrite: |
2029 | fs_FloppyWrite: |
2027 | cmp byte [esi], 0 |
2030 | cmp byte [esi], 0 |
2028 | jz @b |
2031 | jz @b |
2029 | call read_flp_fat |
2032 | call read_flp_fat |
2030 | cmp [FDC_Status], 0 |
2033 | cmp [FDC_Status], 0 |
2031 | jnz .ret11 |
2034 | jnz .ret11 |
2032 | pushad |
2035 | pushad |
2033 | call fd_find_lfn |
2036 | call fd_find_lfn |
2034 | jnc .found |
2037 | jnc .found |
2035 | popad |
2038 | popad |
2036 | push ERROR_FILE_NOT_FOUND |
2039 | push ERROR_FILE_NOT_FOUND |
2037 | jmp .ret0 |
2040 | jmp .ret0 |
2038 | .found: |
2041 | .found: |
2039 | ; FAT does not support files larger than 4GB |
2042 | ; FAT does not support files larger than 4GB |
2040 | test ebx, ebx |
2043 | test ebx, ebx |
2041 | jz .l1 |
2044 | jz .l1 |
2042 | cmp dword [ebx+4], 0 |
2045 | cmp dword [ebx+4], 0 |
2043 | jz @f |
2046 | jz @f |
2044 | .eof: |
2047 | .eof: |
2045 | popad |
2048 | popad |
2046 | push ERROR_END_OF_FILE |
2049 | push ERROR_END_OF_FILE |
2047 | jmp .ret0 |
2050 | jmp .ret0 |
2048 | @@: |
2051 | @@: |
2049 | mov ebx, [ebx] |
2052 | mov ebx, [ebx] |
2050 | .l1: |
2053 | .l1: |
2051 | ; now edi points to direntry, ebx=start byte to write, |
2054 | ; now edi points to direntry, ebx=start byte to write, |
2052 | ; ecx=number of bytes to write, edx=data pointer |
2055 | ; ecx=number of bytes to write, edx=data pointer |
2053 | 2056 | ||
2054 | ; extend file if needed |
2057 | ; extend file if needed |
2055 | add ecx, ebx |
2058 | add ecx, ebx |
2056 | jc .eof ; FAT does not support files larger than 4GB |
2059 | jc .eof ; FAT does not support files larger than 4GB |
2057 | push eax ; save directory cluster |
2060 | push eax ; save directory cluster |
2058 | push 0 ; return value=0 |
2061 | push 0 ; return value=0 |
2059 | 2062 | ||
2060 | call get_time_for_file |
2063 | call get_time_for_file |
2061 | mov [edi+22], ax ; last write time |
2064 | mov [edi+22], ax ; last write time |
2062 | call get_date_for_file |
2065 | call get_date_for_file |
2063 | mov [edi+24], ax ; last write date |
2066 | mov [edi+24], ax ; last write date |
2064 | mov [edi+18], ax ; last access date |
2067 | mov [edi+18], ax ; last access date |
2065 | 2068 | ||
2066 | push dword [edi+28] ; save current file size |
2069 | push dword [edi+28] ; save current file size |
2067 | cmp ecx, [edi+28] |
2070 | cmp ecx, [edi+28] |
2068 | jbe .length_ok |
2071 | jbe .length_ok |
2069 | cmp ecx, ebx |
2072 | cmp ecx, ebx |
2070 | jz .length_ok |
2073 | jz .length_ok |
2071 | call floppy_extend_file |
2074 | call floppy_extend_file |
2072 | jnc .length_ok |
2075 | jnc .length_ok |
2073 | mov [esp+4], eax |
2076 | mov [esp+4], eax |
2074 | ; floppy_extend_file can return two error codes: FAT table error or disk full. |
2077 | ; floppy_extend_file can return two error codes: FAT table error or disk full. |
2075 | ; First case is fatal error, in second case we may write some data |
2078 | ; First case is fatal error, in second case we may write some data |
2076 | cmp al, ERROR_DISK_FULL |
2079 | cmp al, ERROR_DISK_FULL |
2077 | jz .disk_full |
2080 | jz .disk_full |
2078 | pop eax |
2081 | pop eax |
2079 | pop eax |
2082 | pop eax |
2080 | mov [esp+4+28], eax |
2083 | mov [esp+4+28], eax |
2081 | pop eax |
2084 | pop eax |
2082 | popad |
2085 | popad |
2083 | xor ebx, ebx |
2086 | xor ebx, ebx |
2084 | ret |
2087 | ret |
2085 | .disk_full: |
2088 | .disk_full: |
2086 | ; correct number of bytes to write |
2089 | ; correct number of bytes to write |
2087 | mov ecx, [edi+28] |
2090 | mov ecx, [edi+28] |
2088 | cmp ecx, ebx |
2091 | cmp ecx, ebx |
2089 | ja .length_ok |
2092 | ja .length_ok |
2090 | .ret: |
2093 | .ret: |
2091 | pop eax |
2094 | pop eax |
2092 | pop eax |
2095 | pop eax |
2093 | mov [esp+4+28], eax ; eax=return value |
2096 | mov [esp+4+28], eax ; eax=return value |
2094 | pop eax |
2097 | pop eax |
2095 | sub edx, [esp+20] |
2098 | sub edx, [esp+20] |
2096 | mov [esp+16], edx ; ebx=number of written bytes |
2099 | mov [esp+16], edx ; ebx=number of written bytes |
2097 | popad |
2100 | popad |
2098 | ret |
2101 | ret |
2099 | .length_ok: |
2102 | .length_ok: |
2100 | ; save FAT & directory |
2103 | ; save FAT & directory |
2101 | ; note that directory must be saved first because save_flp_fat uses buffer at 0xD000 |
2104 | ; note that directory must be saved first because save_flp_fat uses buffer at 0xD000 |
2102 | mov esi, [edi+28] |
2105 | mov esi, [edi+28] |
2103 | movzx edi, word [edi+26] ; starting cluster |
2106 | movzx edi, word [edi+26] ; starting cluster |
2104 | mov eax, [esp+8] |
2107 | mov eax, [esp+8] |
2105 | pusha |
2108 | pusha |
2106 | call save_chs_sector |
2109 | call save_chs_sector |
2107 | popa |
2110 | popa |
2108 | cmp [FDC_Status], 0 |
2111 | cmp [FDC_Status], 0 |
2109 | jnz .device_err |
2112 | jnz .device_err |
2110 | call save_flp_fat |
2113 | call save_flp_fat |
2111 | cmp [FDC_Status], 0 |
2114 | cmp [FDC_Status], 0 |
2112 | jz @f |
2115 | jz @f |
2113 | .device_err: |
2116 | .device_err: |
2114 | mov byte [esp+4], 11 |
2117 | mov byte [esp+4], 11 |
2115 | jmp .ret |
2118 | jmp .ret |
2116 | @@: |
2119 | @@: |
2117 | 2120 | ||
2118 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2121 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2119 | sub ecx, ebx |
2122 | sub ecx, ebx |
2120 | jz .ret |
2123 | jz .ret |
2121 | call SetUserInterrupts |
2124 | call SetUserInterrupts |
2122 | .write_loop: |
2125 | .write_loop: |
2123 | ; skip unmodified sectors |
2126 | ; skip unmodified sectors |
2124 | cmp dword [esp], 0x200 |
2127 | cmp dword [esp], 0x200 |
2125 | jb .modify |
2128 | jb .modify |
2126 | sub ebx, 0x200 |
2129 | sub ebx, 0x200 |
2127 | jae .skip |
2130 | jae .skip |
2128 | add ebx, 0x200 |
2131 | add ebx, 0x200 |
2129 | .modify: |
2132 | .modify: |
2130 | lea eax, [edi+31] ; current sector |
2133 | lea eax, [edi+31] ; current sector |
2131 | ; get length of data in current sector |
2134 | ; get length of data in current sector |
2132 | push ecx |
2135 | push ecx |
2133 | sub ebx, 0x200 |
2136 | sub ebx, 0x200 |
2134 | jb .hasdata |
2137 | jb .hasdata |
2135 | neg ebx |
2138 | neg ebx |
2136 | xor ecx, ecx |
2139 | xor ecx, ecx |
2137 | jmp @f |
2140 | jmp @f |
2138 | .hasdata: |
2141 | .hasdata: |
2139 | neg ebx |
2142 | neg ebx |
2140 | cmp ecx, ebx |
2143 | cmp ecx, ebx |
2141 | jbe @f |
2144 | jbe @f |
2142 | mov ecx, ebx |
2145 | mov ecx, ebx |
2143 | @@: |
2146 | @@: |
2144 | ; load sector if needed |
2147 | ; load sector if needed |
2145 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
2148 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
2146 | jz .noread |
2149 | jz .noread |
2147 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
2150 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
2148 | jz .noread |
2151 | jz .noread |
2149 | cmp ecx, esi ; (same for the last sector) |
2152 | cmp ecx, esi ; (same for the last sector) |
2150 | jz .noread |
2153 | jz .noread |
2151 | pusha |
2154 | pusha |
2152 | call read_chs_sector |
2155 | call read_chs_sector |
2153 | popa |
2156 | popa |
2154 | cmp [FDC_Status], 0 |
2157 | cmp [FDC_Status], 0 |
2155 | jz @f |
2158 | jz @f |
2156 | .device_err2: |
2159 | .device_err2: |
2157 | pop ecx |
2160 | pop ecx |
2158 | jmp .device_err |
2161 | jmp .device_err |
2159 | @@: |
2162 | @@: |
2160 | .noread: |
2163 | .noread: |
2161 | ; zero uninitialized data if file was extended (because floppy_extend_file does not this) |
2164 | ; zero uninitialized data if file was extended (because floppy_extend_file does not this) |
2162 | push eax ecx edi |
2165 | push eax ecx edi |
2163 | xor eax, eax |
2166 | xor eax, eax |
2164 | mov ecx, 0x200 |
2167 | mov ecx, 0x200 |
2165 | sub ecx, [esp+4+12] |
2168 | sub ecx, [esp+4+12] |
2166 | jbe @f |
2169 | jbe @f |
2167 | mov edi, FDD_BUFF |
2170 | mov edi, FDD_BUFF |
2168 | add edi, [esp+4+12] |
2171 | add edi, [esp+4+12] |
2169 | rep stosb |
2172 | rep stosb |
2170 | @@: |
2173 | @@: |
2171 | ; zero uninitialized data in the last sector |
2174 | ; zero uninitialized data in the last sector |
2172 | mov ecx, 0x200 |
2175 | mov ecx, 0x200 |
2173 | sub ecx, esi |
2176 | sub ecx, esi |
2174 | jbe @f |
2177 | jbe @f |
2175 | mov edi, FDD_BUFF |
2178 | mov edi, FDD_BUFF |
2176 | add edi, esi |
2179 | add edi, esi |
2177 | rep stosb |
2180 | rep stosb |
2178 | @@: |
2181 | @@: |
2179 | pop edi ecx eax |
2182 | pop edi ecx eax |
2180 | ; copy new data |
2183 | ; copy new data |
2181 | push eax |
2184 | push eax |
2182 | mov eax, edx |
2185 | mov eax, edx |
2183 | neg ebx |
2186 | neg ebx |
2184 | jecxz @f |
2187 | jecxz @f |
2185 | add ebx, FDD_BUFF+0x200 |
2188 | add ebx, FDD_BUFF+0x200 |
2186 | call memmove |
2189 | call memmove |
2187 | xor ebx, ebx |
2190 | xor ebx, ebx |
2188 | @@: |
2191 | @@: |
2189 | pop eax |
2192 | pop eax |
2190 | ; save sector |
2193 | ; save sector |
2191 | pusha |
2194 | pusha |
2192 | call save_chs_sector |
2195 | call save_chs_sector |
2193 | popa |
2196 | popa |
2194 | cmp [FDC_Status], 0 |
2197 | cmp [FDC_Status], 0 |
2195 | jnz .device_err2 |
2198 | jnz .device_err2 |
2196 | add edx, ecx |
2199 | add edx, ecx |
2197 | sub [esp], ecx |
2200 | sub [esp], ecx |
2198 | pop ecx |
2201 | pop ecx |
2199 | jz .done |
2202 | jz .done |
2200 | .skip: |
2203 | .skip: |
2201 | .next_cluster: |
2204 | .next_cluster: |
2202 | movzx edi, word [edi*2+FLOPPY_FAT] |
2205 | movzx edi, word [edi*2+FLOPPY_FAT] |
2203 | sub esi, 0x200 |
2206 | sub esi, 0x200 |
2204 | jae @f |
2207 | jae @f |
2205 | xor esi, esi |
2208 | xor esi, esi |
2206 | @@: |
2209 | @@: |
2207 | sub dword [esp], 0x200 |
2210 | sub dword [esp], 0x200 |
2208 | jae .write_loop |
2211 | jae .write_loop |
2209 | and dword [esp], 0 |
2212 | and dword [esp], 0 |
2210 | jmp .write_loop |
2213 | jmp .write_loop |
2211 | .done: |
2214 | .done: |
2212 | mov [fdc_irq_func], fdc_null |
2215 | mov [fdc_irq_func], fdc_null |
2213 | jmp .ret |
2216 | jmp .ret |
2214 | 2217 | ||
2215 | floppy_extend_file.zero_size: |
2218 | floppy_extend_file.zero_size: |
2216 | xor eax, eax |
2219 | xor eax, eax |
2217 | jmp floppy_extend_file.start_extend |
2220 | jmp floppy_extend_file.start_extend |
2218 | 2221 | ||
2219 | ; extends file on floppy to given size (new data area is undefined) |
2222 | ; extends file on floppy to given size (new data area is undefined) |
2220 | ; in: edi->direntry, ecx=new size |
2223 | ; in: edi->direntry, ecx=new size |
2221 | ; out: CF=0 => OK, eax=0 |
2224 | ; out: CF=0 => OK, eax=0 |
2222 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL) |
2225 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL) |
2223 | floppy_extend_file: |
2226 | floppy_extend_file: |
2224 | push ecx |
2227 | push ecx |
2225 | ; find the last cluster of file |
2228 | ; find the last cluster of file |
2226 | movzx eax, word [edi+26] ; first cluster |
2229 | movzx eax, word [edi+26] ; first cluster |
2227 | mov ecx, [edi+28] |
2230 | mov ecx, [edi+28] |
2228 | jecxz .zero_size |
2231 | jecxz .zero_size |
2229 | @@: |
2232 | @@: |
2230 | sub ecx, 0x200 |
2233 | sub ecx, 0x200 |
2231 | jbe @f |
2234 | jbe @f |
2232 | mov eax, [eax*2+FLOPPY_FAT] |
2235 | mov eax, [eax*2+FLOPPY_FAT] |
2233 | and eax, 0xFFF |
2236 | and eax, 0xFFF |
2234 | jz .fat_err |
2237 | jz .fat_err |
2235 | cmp eax, 0xFF8 |
2238 | cmp eax, 0xFF8 |
2236 | jb @b |
2239 | jb @b |
2237 | .fat_err: |
2240 | .fat_err: |
2238 | pop ecx |
2241 | pop ecx |
2239 | push ERROR_FAT_TABLE |
2242 | push ERROR_FAT_TABLE |
2240 | pop eax |
2243 | pop eax |
2241 | stc |
2244 | stc |
2242 | ret |
2245 | ret |
2243 | @@: |
2246 | @@: |
2244 | push eax |
2247 | push eax |
2245 | mov eax, [eax*2+FLOPPY_FAT] |
2248 | mov eax, [eax*2+FLOPPY_FAT] |
2246 | and eax, 0xFFF |
2249 | and eax, 0xFFF |
2247 | cmp eax, 0xFF8 |
2250 | cmp eax, 0xFF8 |
2248 | pop eax |
2251 | pop eax |
2249 | jb .fat_err |
2252 | jb .fat_err |
2250 | ; set length to full number of sectors |
2253 | ; set length to full number of sectors |
2251 | sub [edi+28], ecx |
2254 | sub [edi+28], ecx |
2252 | .start_extend: |
2255 | .start_extend: |
2253 | pop ecx |
2256 | pop ecx |
2254 | ; now do extend |
2257 | ; now do extend |
2255 | push edx esi |
2258 | push edx esi |
2256 | mov esi, FLOPPY_FAT+2*2 ; start scan from cluster 2 |
2259 | mov esi, FLOPPY_FAT+2*2 ; start scan from cluster 2 |
2257 | mov edx, 2847 ; number of clusters to scan |
2260 | mov edx, 2847 ; number of clusters to scan |
2258 | .extend_loop: |
2261 | .extend_loop: |
2259 | cmp [edi+28], ecx |
2262 | cmp [edi+28], ecx |
2260 | jae .extend_done |
2263 | jae .extend_done |
2261 | ; add new sector |
2264 | ; add new sector |
2262 | push ecx |
2265 | push ecx |
2263 | push edi |
2266 | push edi |
2264 | .scan: |
2267 | .scan: |
2265 | mov ecx, edx |
2268 | mov ecx, edx |
2266 | mov edi, esi |
2269 | mov edi, esi |
2267 | jecxz .disk_full |
2270 | jecxz .disk_full |
2268 | push eax |
2271 | push eax |
2269 | xor eax, eax |
2272 | xor eax, eax |
2270 | repnz scasw |
2273 | repnz scasw |
2271 | pop eax |
2274 | pop eax |
2272 | jnz .disk_full |
2275 | jnz .disk_full |
2273 | mov word [edi-2], 0xFFF |
2276 | mov word [edi-2], 0xFFF |
2274 | mov esi, edi |
2277 | mov esi, edi |
2275 | mov edx, ecx |
2278 | mov edx, ecx |
2276 | sub edi, FLOPPY_FAT |
2279 | sub edi, FLOPPY_FAT |
2277 | shr edi, 1 |
2280 | shr edi, 1 |
2278 | dec edi ; now edi=new cluster |
2281 | dec edi ; now edi=new cluster |
2279 | test eax, eax |
2282 | test eax, eax |
2280 | jz .first_cluster |
2283 | jz .first_cluster |
2281 | mov [FLOPPY_FAT+eax*2], di |
2284 | mov [FLOPPY_FAT+eax*2], di |
2282 | jmp @f |
2285 | jmp @f |
2283 | .first_cluster: |
2286 | .first_cluster: |
2284 | pop eax ; eax->direntry |
2287 | pop eax ; eax->direntry |
2285 | push eax |
2288 | push eax |
2286 | mov [eax+26], di |
2289 | mov [eax+26], di |
2287 | @@: |
2290 | @@: |
2288 | mov eax, edi ; eax=new cluster |
2291 | mov eax, edi ; eax=new cluster |
2289 | pop edi ; edi->direntry |
2292 | pop edi ; edi->direntry |
2290 | pop ecx ; ecx=required size |
2293 | pop ecx ; ecx=required size |
2291 | add dword [edi+28], 0x200 |
2294 | add dword [edi+28], 0x200 |
2292 | jmp .extend_loop |
2295 | jmp .extend_loop |
2293 | .extend_done: |
2296 | .extend_done: |
2294 | mov [edi+28], ecx |
2297 | mov [edi+28], ecx |
2295 | pop esi edx |
2298 | pop esi edx |
2296 | xor eax, eax ; CF=0 |
2299 | xor eax, eax ; CF=0 |
2297 | ret |
2300 | ret |
2298 | .disk_full: |
2301 | .disk_full: |
2299 | pop edi ecx |
2302 | pop edi ecx |
2300 | pop esi edx |
2303 | pop esi edx |
2301 | stc |
2304 | stc |
2302 | push ERROR_DISK_FULL |
2305 | push ERROR_DISK_FULL |
2303 | pop eax |
2306 | pop eax |
2304 | ret |
2307 | ret |
2305 | 2308 | ||
2306 | ;---------------------------------------------------------------- |
2309 | ;---------------------------------------------------------------- |
2307 | ; |
2310 | ; |
2308 | ; fs_FloppySetFileEnd - set end of file on floppy |
2311 | ; fs_FloppySetFileEnd - set end of file on floppy |
2309 | ; |
2312 | ; |
2310 | ; esi points to filename |
2313 | ; esi points to filename |
2311 | ; ebx points to 64-bit number = new file size |
2314 | ; ebx points to 64-bit number = new file size |
2312 | ; ecx ignored (reserved) |
2315 | ; ecx ignored (reserved) |
2313 | ; edx ignored (reserved) |
2316 | ; edx ignored (reserved) |
2314 | ; |
2317 | ; |
2315 | ; ret eax = 0 ok or other = errormsg |
2318 | ; ret eax = 0 ok or other = errormsg |
2316 | ; |
2319 | ; |
2317 | ;-------------------------------------------------------------- |
2320 | ;-------------------------------------------------------------- |
2318 | fs_FloppySetFileEnd: |
2321 | fs_FloppySetFileEnd: |
2319 | call read_flp_fat |
2322 | call read_flp_fat |
2320 | cmp [FDC_Status], 0 |
2323 | cmp [FDC_Status], 0 |
2321 | jnz ret11 |
2324 | jnz ret11 |
2322 | cmp byte [esi], 0 |
2325 | cmp byte [esi], 0 |
2323 | jnz @f |
2326 | jnz @f |
2324 | .access_denied: |
2327 | .access_denied: |
2325 | push ERROR_ACCESS_DENIED |
2328 | push ERROR_ACCESS_DENIED |
2326 | jmp .ret |
2329 | jmp .ret |
2327 | @@: |
2330 | @@: |
2328 | push edi |
2331 | push edi |
2329 | call fd_find_lfn |
2332 | call fd_find_lfn |
2330 | jnc @f |
2333 | jnc @f |
2331 | pop edi |
2334 | pop edi |
2332 | push ERROR_FILE_NOT_FOUND |
2335 | push ERROR_FILE_NOT_FOUND |
2333 | .ret: |
2336 | .ret: |
2334 | pop eax |
2337 | pop eax |
2335 | jmp .doret |
2338 | jmp .doret |
2336 | @@: |
2339 | @@: |
2337 | ; must not be directory |
2340 | ; must not be directory |
2338 | test byte [edi+11], 10h |
2341 | test byte [edi+11], 10h |
2339 | jz @f |
2342 | jz @f |
2340 | pop edi |
2343 | pop edi |
2341 | jmp .access_denied |
2344 | jmp .access_denied |
2342 | @@: |
2345 | @@: |
2343 | ; file size must not exceed 4 Gb |
2346 | ; file size must not exceed 4 Gb |
2344 | cmp dword [ebx+4], 0 |
2347 | cmp dword [ebx+4], 0 |
2345 | jz @f |
2348 | jz @f |
2346 | pop edi |
2349 | pop edi |
2347 | push ERROR_END_OF_FILE |
2350 | push ERROR_END_OF_FILE |
2348 | jmp .ret |
2351 | jmp .ret |
2349 | @@: |
2352 | @@: |
2350 | push eax |
2353 | push eax |
2351 | ; set file modification date/time to current |
2354 | ; set file modification date/time to current |
2352 | call fat_update_datetime |
2355 | call fat_update_datetime |
2353 | mov eax, [ebx] |
2356 | mov eax, [ebx] |
2354 | cmp eax, [edi+28] |
2357 | cmp eax, [edi+28] |
2355 | jb .truncate |
2358 | jb .truncate |
2356 | ja .expand |
2359 | ja .expand |
2357 | pop eax |
2360 | pop eax |
2358 | pushad |
2361 | pushad |
2359 | call save_chs_sector |
2362 | call save_chs_sector |
2360 | popad |
2363 | popad |
2361 | pop edi |
2364 | pop edi |
2362 | xor eax, eax |
2365 | xor eax, eax |
2363 | cmp [FDC_Status], 0 |
2366 | cmp [FDC_Status], 0 |
2364 | jz @f |
2367 | jz @f |
2365 | mov al, 11 |
2368 | mov al, 11 |
2366 | @@: |
2369 | @@: |
2367 | .doret: |
2370 | .doret: |
2368 | mov [fdc_irq_func], fdc_null |
2371 | mov [fdc_irq_func], fdc_null |
2369 | ret |
2372 | ret |
2370 | .expand: |
2373 | .expand: |
2371 | push ecx |
2374 | push ecx |
2372 | push dword [edi+28] ; save old size |
2375 | push dword [edi+28] ; save old size |
2373 | mov ecx, eax |
2376 | mov ecx, eax |
2374 | call floppy_extend_file |
2377 | call floppy_extend_file |
2375 | push eax ; return code |
2378 | push eax ; return code |
2376 | jnc .expand_ok |
2379 | jnc .expand_ok |
2377 | cmp al, ERROR_DISK_FULL |
2380 | cmp al, ERROR_DISK_FULL |
2378 | jz .disk_full |
2381 | jz .disk_full |
2379 | pop eax ecx ecx edi edi |
2382 | pop eax ecx ecx edi edi |
2380 | jmp .doret |
2383 | jmp .doret |
2381 | .device_err: |
2384 | .device_err: |
2382 | pop eax |
2385 | pop eax |
2383 | .device_err2: |
2386 | .device_err2: |
2384 | pop ecx ecx eax edi |
2387 | pop ecx ecx eax edi |
2385 | push 11 |
2388 | push 11 |
2386 | jmp .ret |
2389 | jmp .ret |
2387 | .disk_full: |
2390 | .disk_full: |
2388 | .expand_ok: |
2391 | .expand_ok: |
2389 | ; save directory & FAT |
2392 | ; save directory & FAT |
2390 | mov eax, [edi+28] |
2393 | mov eax, [edi+28] |
2391 | xchg eax, [esp+12] |
2394 | xchg eax, [esp+12] |
2392 | movzx edi, word [edi+26] |
2395 | movzx edi, word [edi+26] |
2393 | pusha |
2396 | pusha |
2394 | call save_chs_sector |
2397 | call save_chs_sector |
2395 | popa |
2398 | popa |
2396 | cmp [FDC_Status], 0 |
2399 | cmp [FDC_Status], 0 |
2397 | jnz .device_err |
2400 | jnz .device_err |
2398 | call save_flp_fat |
2401 | call save_flp_fat |
2399 | cmp [FDC_Status], 0 |
2402 | cmp [FDC_Status], 0 |
2400 | jnz .device_err |
2403 | jnz .device_err |
2401 | call SetUserInterrupts |
2404 | call SetUserInterrupts |
2402 | ; now zero new data |
2405 | ; now zero new data |
2403 | ; edi = current cluster, [esp+12]=new size, [esp+4]=old size, [esp]=return code |
2406 | ; edi = current cluster, [esp+12]=new size, [esp+4]=old size, [esp]=return code |
2404 | .zero_loop: |
2407 | .zero_loop: |
2405 | sub dword [esp+4], 0x200 |
2408 | sub dword [esp+4], 0x200 |
2406 | jae .next_cluster |
2409 | jae .next_cluster |
2407 | cmp dword [esp+4], -0x200 |
2410 | cmp dword [esp+4], -0x200 |
2408 | jz .noread |
2411 | jz .noread |
2409 | lea eax, [edi+31] |
2412 | lea eax, [edi+31] |
2410 | pusha |
2413 | pusha |
2411 | call read_chs_sector |
2414 | call read_chs_sector |
2412 | popa |
2415 | popa |
2413 | cmp [FDC_Status], 0 |
2416 | cmp [FDC_Status], 0 |
2414 | jnz .err_next |
2417 | jnz .err_next |
2415 | .noread: |
2418 | .noread: |
2416 | mov ecx, [esp+4] |
2419 | mov ecx, [esp+4] |
2417 | neg ecx |
2420 | neg ecx |
2418 | push edi |
2421 | push edi |
2419 | mov edi, FDD_BUFF+0x200 |
2422 | mov edi, FDD_BUFF+0x200 |
2420 | add edi, [esp+8] |
2423 | add edi, [esp+8] |
2421 | xor eax, eax |
2424 | xor eax, eax |
2422 | mov [esp+8], eax |
2425 | mov [esp+8], eax |
2423 | rep stosb |
2426 | rep stosb |
2424 | pop edi |
2427 | pop edi |
2425 | lea eax, [edi+31] |
2428 | lea eax, [edi+31] |
2426 | pusha |
2429 | pusha |
2427 | call save_chs_sector |
2430 | call save_chs_sector |
2428 | popa |
2431 | popa |
2429 | cmp [FDC_Status], 0 |
2432 | cmp [FDC_Status], 0 |
2430 | jz .next_cluster |
2433 | jz .next_cluster |
2431 | .err_next: |
2434 | .err_next: |
2432 | mov byte [esp], 11 |
2435 | mov byte [esp], 11 |
2433 | .next_cluster: |
2436 | .next_cluster: |
2434 | sub dword [esp+12], 0x200 |
2437 | sub dword [esp+12], 0x200 |
2435 | jbe .expand_done |
2438 | jbe .expand_done |
2436 | movzx edi, word [FLOPPY_FAT+edi*2] |
2439 | movzx edi, word [FLOPPY_FAT+edi*2] |
2437 | jmp .zero_loop |
2440 | jmp .zero_loop |
2438 | .expand_done: |
2441 | .expand_done: |
2439 | pop eax ecx ecx edi edi |
2442 | pop eax ecx ecx edi edi |
2440 | jmp .doret |
2443 | jmp .doret |
2441 | .truncate: |
2444 | .truncate: |
2442 | mov [edi+28], eax |
2445 | mov [edi+28], eax |
2443 | push ecx |
2446 | push ecx |
2444 | movzx ecx, word [edi+26] |
2447 | movzx ecx, word [edi+26] |
2445 | test eax, eax |
2448 | test eax, eax |
2446 | jz .zero_size |
2449 | jz .zero_size |
2447 | ; find new last sector |
2450 | ; find new last sector |
2448 | @@: |
2451 | @@: |
2449 | sub eax, 0x200 |
2452 | sub eax, 0x200 |
2450 | jbe @f |
2453 | jbe @f |
2451 | movzx ecx, word [FLOPPY_FAT+ecx*2] |
2454 | movzx ecx, word [FLOPPY_FAT+ecx*2] |
2452 | jmp @b |
2455 | jmp @b |
2453 | @@: |
2456 | @@: |
2454 | ; we will zero data at the end of last sector - remember it |
2457 | ; we will zero data at the end of last sector - remember it |
2455 | push ecx |
2458 | push ecx |
2456 | ; terminate FAT chain |
2459 | ; terminate FAT chain |
2457 | lea ecx, [FLOPPY_FAT+ecx+ecx] |
2460 | lea ecx, [FLOPPY_FAT+ecx+ecx] |
2458 | push dword [ecx] |
2461 | push dword [ecx] |
2459 | mov word [ecx], 0xFFF |
2462 | mov word [ecx], 0xFFF |
2460 | pop ecx |
2463 | pop ecx |
2461 | and ecx, 0xFFF |
2464 | and ecx, 0xFFF |
2462 | jmp .delete |
2465 | jmp .delete |
2463 | .zero_size: |
2466 | .zero_size: |
2464 | and word [edi+26], 0 |
2467 | and word [edi+26], 0 |
2465 | push 0 |
2468 | push 0 |
2466 | .delete: |
2469 | .delete: |
2467 | ; delete FAT chain starting with ecx |
2470 | ; delete FAT chain starting with ecx |
2468 | ; mark all clusters as free |
2471 | ; mark all clusters as free |
2469 | cmp ecx, 0xFF8 |
2472 | cmp ecx, 0xFF8 |
2470 | jae .deleted |
2473 | jae .deleted |
2471 | lea ecx, [FLOPPY_FAT+ecx+ecx] |
2474 | lea ecx, [FLOPPY_FAT+ecx+ecx] |
2472 | push dword [ecx] |
2475 | push dword [ecx] |
2473 | and word [ecx], 0 |
2476 | and word [ecx], 0 |
2474 | pop ecx |
2477 | pop ecx |
2475 | and ecx, 0xFFF |
2478 | and ecx, 0xFFF |
2476 | jmp .delete |
2479 | jmp .delete |
2477 | .deleted: |
2480 | .deleted: |
2478 | mov edi, [edi+28] |
2481 | mov edi, [edi+28] |
2479 | ; save directory & FAT |
2482 | ; save directory & FAT |
2480 | mov eax, [esp+8] |
2483 | mov eax, [esp+8] |
2481 | pusha |
2484 | pusha |
2482 | call save_chs_sector |
2485 | call save_chs_sector |
2483 | popa |
2486 | popa |
2484 | cmp [FDC_Status], 0 |
2487 | cmp [FDC_Status], 0 |
2485 | jnz .device_err2 |
2488 | jnz .device_err2 |
2486 | call save_flp_fat |
2489 | call save_flp_fat |
2487 | cmp [FDC_Status], 0 |
2490 | cmp [FDC_Status], 0 |
2488 | jnz .device_err2 |
2491 | jnz .device_err2 |
2489 | ; zero last sector, ignore errors |
2492 | ; zero last sector, ignore errors |
2490 | pop eax |
2493 | pop eax |
2491 | add eax, 31 |
2494 | add eax, 31 |
2492 | and edi, 0x1FF |
2495 | and edi, 0x1FF |
2493 | jz .truncate_done |
2496 | jz .truncate_done |
2494 | call SetUserInterrupts |
2497 | call SetUserInterrupts |
2495 | pusha |
2498 | pusha |
2496 | call read_chs_sector |
2499 | call read_chs_sector |
2497 | popa |
2500 | popa |
2498 | add edi, FDD_BUFF |
2501 | add edi, FDD_BUFF |
2499 | mov ecx, FDD_BUFF+0x200 |
2502 | mov ecx, FDD_BUFF+0x200 |
2500 | sub ecx, edi |
2503 | sub ecx, edi |
2501 | push eax |
2504 | push eax |
2502 | xor eax, eax |
2505 | xor eax, eax |
2503 | rep stosb |
2506 | rep stosb |
2504 | pop eax |
2507 | pop eax |
2505 | pusha |
2508 | pusha |
2506 | call save_chs_sector |
2509 | call save_chs_sector |
2507 | popa |
2510 | popa |
2508 | .truncate_done: |
2511 | .truncate_done: |
2509 | pop ecx eax edi |
2512 | pop ecx eax edi |
2510 | xor eax, eax |
2513 | xor eax, eax |
2511 | jmp .doret |
2514 | jmp .doret |
2512 | 2515 | ||
2513 | fs_FloppyGetFileInfo: |
2516 | fs_FloppyGetFileInfo: |
2514 | call read_flp_fat |
2517 | call read_flp_fat |
2515 | cmp [FDC_Status], 0 |
2518 | cmp [FDC_Status], 0 |
2516 | jnz ret11 |
2519 | jnz ret11 |
2517 | cmp byte [esi], 0 |
2520 | cmp byte [esi], 0 |
2518 | jnz @f |
2521 | jnz @f |
2519 | mov eax, 2 ; unsupported |
2522 | mov eax, 2 ; unsupported |
2520 | ret |
2523 | ret |
2521 | @@: |
2524 | @@: |
2522 | push edi |
2525 | push edi |
2523 | call fd_find_lfn |
2526 | call fd_find_lfn |
2524 | jmp fs_GetFileInfo_finish |
2527 | jmp fs_GetFileInfo_finish |
2525 | 2528 | ||
2526 | ret11: |
2529 | ret11: |
2527 | mov eax, 11 |
2530 | mov eax, 11 |
2528 | ret |
2531 | ret |
2529 | 2532 | ||
2530 | fs_FloppySetFileInfo: |
2533 | fs_FloppySetFileInfo: |
2531 | call read_flp_fat |
2534 | call read_flp_fat |
2532 | cmp [FDC_Status], 0 |
2535 | cmp [FDC_Status], 0 |
2533 | jnz ret11 |
2536 | jnz ret11 |
2534 | cmp byte [esi], 0 |
2537 | cmp byte [esi], 0 |
2535 | jnz @f |
2538 | jnz @f |
2536 | mov eax, 2 ; unsupported |
2539 | mov eax, 2 ; unsupported |
2537 | ret |
2540 | ret |
2538 | @@: |
2541 | @@: |
2539 | push edi |
2542 | push edi |
2540 | call fd_find_lfn |
2543 | call fd_find_lfn |
2541 | jnc @f |
2544 | jnc @f |
2542 | pop edi |
2545 | pop edi |
2543 | mov eax, ERROR_FILE_NOT_FOUND |
2546 | mov eax, ERROR_FILE_NOT_FOUND |
2544 | ret |
2547 | ret |
2545 | @@: |
2548 | @@: |
2546 | push eax |
2549 | push eax |
2547 | call bdfe_to_fat_entry |
2550 | call bdfe_to_fat_entry |
2548 | pop eax |
2551 | pop eax |
2549 | pusha |
2552 | pusha |
2550 | call save_chs_sector |
2553 | call save_chs_sector |
2551 | popa |
2554 | popa |
2552 | pop edi |
2555 | pop edi |
2553 | xor eax, eax |
2556 | xor eax, eax |
2554 | cmp [FDC_Status], 0 |
2557 | cmp [FDC_Status], 0 |
2555 | jz @f |
2558 | jz @f |
2556 | mov al, 11 |
2559 | mov al, 11 |
2557 | @@: |
2560 | @@: |
2558 | ret |
2561 | ret |
2559 | 2562 | ||
2560 | if 0 |
2563 | if 0 |
2561 | ;---------------------------------------------------------------- |
2564 | ;---------------------------------------------------------------- |
2562 | ; |
2565 | ; |
2563 | ; fs_FloppyExecute - LFN variant for executing from floppy |
2566 | ; fs_FloppyExecute - LFN variant for executing from floppy |
2564 | ; |
2567 | ; |
2565 | ; esi points to floppy filename (e.g. 'dir1/name') |
2568 | ; esi points to floppy filename (e.g. 'dir1/name') |
2566 | ; ebp points to full filename (e.g. '/fd/1/dir1/name') |
2569 | ; ebp points to full filename (e.g. '/fd/1/dir1/name') |
2567 | ; dword [ebx] = flags |
2570 | ; dword [ebx] = flags |
2568 | ; dword [ebx+4] = cmdline |
2571 | ; dword [ebx+4] = cmdline |
2569 | ; |
2572 | ; |
2570 | ; ret ebx,edx destroyed |
2573 | ; ret ebx,edx destroyed |
2571 | ; eax > 0 - PID, < 0 - error |
2574 | ; eax > 0 - PID, < 0 - error |
2572 | ; |
2575 | ; |
2573 | ;-------------------------------------------------------------- |
2576 | ;-------------------------------------------------------------- |
2574 | fs_FloppyExecute: |
2577 | fs_FloppyExecute: |
2575 | mov edx, [ebx] |
2578 | mov edx, [ebx] |
2576 | mov ebx, [ebx+4] |
2579 | mov ebx, [ebx+4] |
2577 | test ebx, ebx |
2580 | test ebx, ebx |
2578 | jz @f |
2581 | jz @f |
2579 | add ebx, std_application_base_address |
2582 | ; add ebx, std_application_base_address |
2580 | @@: |
2583 | @@: |
2581 | 2584 | ||
2582 | ;---------------------------------------------------------------- |
2585 | ;---------------------------------------------------------------- |
2583 | ; |
2586 | ; |
2584 | ; fs_FloppyExecute.flags - second entry |
2587 | ; fs_FloppyExecute.flags - second entry |
2585 | ; |
2588 | ; |
2586 | ; esi points to floppy filename (kernel address) |
2589 | ; esi points to floppy filename (kernel address) |
2587 | ; ebp points to full filename |
2590 | ; ebp points to full filename |
2588 | ; edx flags |
2591 | ; edx flags |
2589 | ; ebx cmdline (kernel address) |
2592 | ; ebx cmdline (kernel address) |
2590 | ; |
2593 | ; |
2591 | ; ret eax > 0 - PID, < 0 - error |
2594 | ; ret eax > 0 - PID, < 0 - error |
2592 | ; |
2595 | ; |
2593 | ;-------------------------------------------------------------- |
2596 | ;-------------------------------------------------------------- |
2594 | 2597 | ||
2595 | .flags: |
2598 | .flags: |
2596 | call read_flp_fat |
2599 | call read_flp_fat |
2597 | cmp byte [esi], 0 |
2600 | cmp byte [esi], 0 |
2598 | jnz @f |
2601 | jnz @f |
2599 | ; cannot execute root! |
2602 | ; cannot execute root! |
2600 | mov eax, -ERROR_ACCESS_DENIED |
2603 | mov eax, -ERROR_ACCESS_DENIED |
2601 | ret |
2604 | ret |
2602 | @@: |
2605 | @@: |
2603 | push edi |
2606 | push edi |
2604 | call fd_find_lfn |
2607 | call fd_find_lfn |
2605 | jnc .found |
2608 | jnc .found |
2606 | pop edi |
2609 | pop edi |
2607 | mov eax, -ERROR_FILE_NOT_FOUND |
2610 | mov eax, -ERROR_FILE_NOT_FOUND |
2608 | ret |
2611 | ret |
2609 | .found: |
2612 | .found: |
2610 | movzx eax, word [edi+26] ; cluster |
2613 | movzx eax, word [edi+26] ; cluster |
2611 | push eax |
2614 | push eax |
2612 | push dword [edi+28] ; size |
2615 | push dword [edi+28] ; size |
2613 | push .DoRead |
2616 | push .DoRead |
2614 | call fs_execute |
2617 | call fs_execute |
2615 | add esp, 12 |
2618 | add esp, 12 |
2616 | pop edi |
2619 | pop edi |
2617 | ret |
2620 | ret |
2618 | 2621 | ||
2619 | .DoRead: |
2622 | .DoRead: |
2620 | ; read next block |
2623 | ; read next block |
2621 | ; in: eax->parameters, edi->buffer |
2624 | ; in: eax->parameters, edi->buffer |
2622 | ; out: eax = error code |
2625 | ; out: eax = error code |
2623 | pushad |
2626 | pushad |
2624 | cmp dword [eax], 0 ; file size |
2627 | cmp dword [eax], 0 ; file size |
2625 | jz .eof |
2628 | jz .eof |
2626 | mov eax, [eax+4] ; cluster |
2629 | mov eax, [eax+4] ; cluster |
2627 | add eax, 31 |
2630 | add eax, 31 |
2628 | call read_chs_sector |
2631 | call read_chs_sector |
2629 | cmp [FDC_Status], 0 |
2632 | cmp [FDC_Status], 0 |
2630 | jnz .err |
2633 | jnz .err |
2631 | pop edi |
2634 | pop edi |
2632 | mov esi, FDD_BUFF |
2635 | mov esi, FDD_BUFF |
2633 | push edi |
2636 | push edi |
2634 | mov ecx, 512/4 |
2637 | mov ecx, 512/4 |
2635 | rep movsd |
2638 | rep movsd |
2636 | mov eax, [esp+28] |
2639 | mov eax, [esp+28] |
2637 | mov ecx, [eax] |
2640 | mov ecx, [eax] |
2638 | sub ecx, 512 |
2641 | sub ecx, 512 |
2639 | jae @f |
2642 | jae @f |
2640 | add edi, ecx |
2643 | add edi, ecx |
2641 | neg ecx |
2644 | neg ecx |
2642 | push eax |
2645 | push eax |
2643 | xor eax, eax |
2646 | xor eax, eax |
2644 | rep stosb |
2647 | rep stosb |
2645 | pop eax |
2648 | pop eax |
2646 | @@: |
2649 | @@: |
2647 | mov [eax], ecx |
2650 | mov [eax], ecx |
2648 | mov edx, [eax+4] |
2651 | mov edx, [eax+4] |
2649 | mov dx, [edx*2+FLOPPY_FAT] |
2652 | mov dx, [edx*2+FLOPPY_FAT] |
2650 | mov [eax+4], dx ; high word is already zero |
2653 | mov [eax+4], dx ; high word is already zero |
2651 | popad |
2654 | popad |
2652 | xor eax, eax |
2655 | xor eax, eax |
2653 | ret |
2656 | ret |
2654 | .eof: |
2657 | .eof: |
2655 | popad |
2658 | popad |
2656 | mov eax, 6 |
2659 | mov eax, 6 |
2657 | ret |
2660 | ret |
2658 | .err: |
2661 | .err: |
2659 | popad |
2662 | popad |
2660 | mov eax, 11 |
2663 | mov eax, 11 |
2661 | ret |
2664 | ret |
2662 | end if |
2665 | end if |
2663 | 2666 | ||
2664 | ;---------------------------------------------------------------- |
2667 | ;---------------------------------------------------------------- |
2665 | ; |
2668 | ; |
2666 | ; fs_FloppyDelete - delete file or empty folder from floppy |
2669 | ; fs_FloppyDelete - delete file or empty folder from floppy |
2667 | ; |
2670 | ; |
2668 | ; esi points to filename |
2671 | ; esi points to filename |
2669 | ; |
2672 | ; |
2670 | ; ret eax = 0 ok or other = errormsg |
2673 | ; ret eax = 0 ok or other = errormsg |
2671 | ; |
2674 | ; |
2672 | ;-------------------------------------------------------------- |
2675 | ;-------------------------------------------------------------- |
2673 | fs_FloppyDelete: |
2676 | fs_FloppyDelete: |
2674 | call read_flp_fat |
2677 | call read_flp_fat |
2675 | cmp [FDC_Status], 0 |
2678 | cmp [FDC_Status], 0 |
2676 | jz @f |
2679 | jz @f |
2677 | push 11 |
2680 | push 11 |
2678 | jmp .pop_ret |
2681 | jmp .pop_ret |
2679 | @@: |
2682 | @@: |
2680 | cmp byte [esi], 0 |
2683 | cmp byte [esi], 0 |
2681 | jnz @f |
2684 | jnz @f |
2682 | ; cannot delete root! |
2685 | ; cannot delete root! |
2683 | .access_denied: |
2686 | .access_denied: |
2684 | push ERROR_ACCESS_DENIED |
2687 | push ERROR_ACCESS_DENIED |
2685 | .pop_ret: |
2688 | .pop_ret: |
2686 | pop eax |
2689 | pop eax |
2687 | ret |
2690 | ret |
2688 | @@: |
2691 | @@: |
2689 | and [fd_prev_sector], 0 |
2692 | and [fd_prev_sector], 0 |
2690 | and [fd_prev_prev_sector], 0 |
2693 | and [fd_prev_prev_sector], 0 |
2691 | push edi |
2694 | push edi |
2692 | call fd_find_lfn |
2695 | call fd_find_lfn |
2693 | jnc .found |
2696 | jnc .found |
2694 | pop edi |
2697 | pop edi |
2695 | push ERROR_FILE_NOT_FOUND |
2698 | push ERROR_FILE_NOT_FOUND |
2696 | jmp .pop_ret |
2699 | jmp .pop_ret |
2697 | .found: |
2700 | .found: |
2698 | cmp dword [edi], '. ' |
2701 | cmp dword [edi], '. ' |
2699 | jz .access_denied2 |
2702 | jz .access_denied2 |
2700 | cmp dword [edi], '.. ' |
2703 | cmp dword [edi], '.. ' |
2701 | jz .access_denied2 |
2704 | jz .access_denied2 |
2702 | test byte [edi+11], 10h |
2705 | test byte [edi+11], 10h |
2703 | jz .dodel |
2706 | jz .dodel |
2704 | ; we can delete only empty folders! |
2707 | ; we can delete only empty folders! |
2705 | push eax |
2708 | push eax |
2706 | movzx eax, word [edi+26] |
2709 | movzx eax, word [edi+26] |
2707 | push ebx |
2710 | push ebx |
2708 | pusha |
2711 | pusha |
2709 | add eax, 31 |
2712 | add eax, 31 |
2710 | call read_chs_sector |
2713 | call read_chs_sector |
2711 | popa |
2714 | popa |
2712 | mov ebx, FDD_BUFF + 2*0x20 |
2715 | mov ebx, FDD_BUFF + 2*0x20 |
2713 | .checkempty: |
2716 | .checkempty: |
2714 | cmp byte [ebx], 0 |
2717 | cmp byte [ebx], 0 |
2715 | jz .empty |
2718 | jz .empty |
2716 | cmp byte [ebx], 0xE5 |
2719 | cmp byte [ebx], 0xE5 |
2717 | jnz .notempty |
2720 | jnz .notempty |
2718 | add ebx, 0x20 |
2721 | add ebx, 0x20 |
2719 | cmp ebx, FDD_BUFF + 0x200 |
2722 | cmp ebx, FDD_BUFF + 0x200 |
2720 | jb .checkempty |
2723 | jb .checkempty |
2721 | movzx eax, word [FLOPPY_FAT + eax*2] |
2724 | movzx eax, word [FLOPPY_FAT + eax*2] |
2722 | pusha |
2725 | pusha |
2723 | add eax, 31 |
2726 | add eax, 31 |
2724 | call read_chs_sector |
2727 | call read_chs_sector |
2725 | popa |
2728 | popa |
2726 | mov ebx, FDD_BUFF |
2729 | mov ebx, FDD_BUFF |
2727 | jmp .checkempty |
2730 | jmp .checkempty |
2728 | .notempty: |
2731 | .notempty: |
2729 | pop ebx |
2732 | pop ebx |
2730 | pop eax |
2733 | pop eax |
2731 | .access_denied2: |
2734 | .access_denied2: |
2732 | pop edi |
2735 | pop edi |
2733 | jmp .access_denied |
2736 | jmp .access_denied |
2734 | .empty: |
2737 | .empty: |
2735 | pop ebx |
2738 | pop ebx |
2736 | pop eax |
2739 | pop eax |
2737 | pusha |
2740 | pusha |
2738 | call read_chs_sector |
2741 | call read_chs_sector |
2739 | popa |
2742 | popa |
2740 | .dodel: |
2743 | .dodel: |
2741 | push eax |
2744 | push eax |
2742 | movzx eax, word [edi+26] |
2745 | movzx eax, word [edi+26] |
2743 | xchg eax, [esp] |
2746 | xchg eax, [esp] |
2744 | ; delete folder entry |
2747 | ; delete folder entry |
2745 | mov byte [edi], 0xE5 |
2748 | mov byte [edi], 0xE5 |
2746 | ; delete LFN (if present) |
2749 | ; delete LFN (if present) |
2747 | .lfndel: |
2750 | .lfndel: |
2748 | cmp edi, FDD_BUFF |
2751 | cmp edi, FDD_BUFF |
2749 | ja @f |
2752 | ja @f |
2750 | cmp [fd_prev_sector], 0 |
2753 | cmp [fd_prev_sector], 0 |
2751 | jz .lfndone |
2754 | jz .lfndone |
2752 | push [fd_prev_sector] |
2755 | push [fd_prev_sector] |
2753 | push [fd_prev_prev_sector] |
2756 | push [fd_prev_prev_sector] |
2754 | pop [fd_prev_sector] |
2757 | pop [fd_prev_sector] |
2755 | and [fd_prev_prev_sector], 0 |
2758 | and [fd_prev_prev_sector], 0 |
2756 | pusha |
2759 | pusha |
2757 | call save_chs_sector |
2760 | call save_chs_sector |
2758 | popa |
2761 | popa |
2759 | pop eax |
2762 | pop eax |
2760 | pusha |
2763 | pusha |
2761 | call read_chs_sector |
2764 | call read_chs_sector |
2762 | popa |
2765 | popa |
2763 | mov edi, FDD_BUFF+0x200 |
2766 | mov edi, FDD_BUFF+0x200 |
2764 | @@: |
2767 | @@: |
2765 | sub edi, 0x20 |
2768 | sub edi, 0x20 |
2766 | cmp byte [edi], 0xE5 |
2769 | cmp byte [edi], 0xE5 |
2767 | jz .lfndone |
2770 | jz .lfndone |
2768 | cmp byte [edi+11], 0xF |
2771 | cmp byte [edi+11], 0xF |
2769 | jnz .lfndone |
2772 | jnz .lfndone |
2770 | mov byte [edi], 0xE5 |
2773 | mov byte [edi], 0xE5 |
2771 | jmp .lfndel |
2774 | jmp .lfndel |
2772 | .lfndone: |
2775 | .lfndone: |
2773 | pusha |
2776 | pusha |
2774 | call save_chs_sector |
2777 | call save_chs_sector |
2775 | popa |
2778 | popa |
2776 | ; delete FAT chain |
2779 | ; delete FAT chain |
2777 | pop eax |
2780 | pop eax |
2778 | test eax, eax |
2781 | test eax, eax |
2779 | jz .done |
2782 | jz .done |
2780 | @@: |
2783 | @@: |
2781 | lea eax, [FLOPPY_FAT + eax*2] |
2784 | lea eax, [FLOPPY_FAT + eax*2] |
2782 | push dword [eax] |
2785 | push dword [eax] |
2783 | and word [eax], 0 |
2786 | and word [eax], 0 |
2784 | pop eax |
2787 | pop eax |
2785 | and eax, 0xFFF |
2788 | and eax, 0xFFF |
2786 | jnz @b |
2789 | jnz @b |
2787 | .done: |
2790 | .done: |
2788 | call save_flp_fat |
2791 | call save_flp_fat |
2789 | pop edi |
2792 | pop edi |
2790 | xor eax, eax |
2793 | xor eax, eax |
2791 | ret |
2794 | ret |
2792 | 2795 | ||
2793 | ; \end{diamond}>>=>=>->->->-> |
2796 | ; \end{diamond}>>=>=>->->->-> |