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1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
2 | ;; ;; |
3 | ;; FAT12.INC ;; |
3 | ;; FAT12.INC ;; |
4 | ;; (C) 2005 Mario79, License: GPL ;; |
4 | ;; (C) 2005 Mario79, License: GPL ;; |
5 | ;; ;; |
5 | ;; ;; |
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
7 | 7 | ||
8 | n_sector dd 0 ; temporary save for sector value |
8 | n_sector dd 0 ; temporary save for sector value |
9 | flp_status dd 0 |
9 | flp_status dd 0 |
10 | clust_tmp_flp dd 0 ; used by analyze_directory and analyze_directory_to_write |
10 | clust_tmp_flp dd 0 ; used by analyze_directory and analyze_directory_to_write |
11 | path_pointer_flp dd 0 |
11 | path_pointer_flp dd 0 |
12 | pointer_file_name_flp dd 0 |
12 | pointer_file_name_flp dd 0 |
13 | save_root_flag db 0 |
13 | save_root_flag db 0 |
14 | save_flag db 0 |
14 | save_flag db 0 |
15 | root_read db 0 ; 0-necessary to load root, 1-not to load root |
15 | root_read db 0 ; 0-necessary to load root, 1-not to load root |
16 | flp_fat db 0 ; 0-necessary to load fat, 1-not to load fat |
16 | flp_fat db 0 ; 0-necessary to load fat, 1-not to load fat |
17 | flp_number db 0 ; 1- Floppy A, 2-Floppy B |
17 | flp_number db 0 ; 1- Floppy A, 2-Floppy B |
18 | old_track db 0 ; old value track |
18 | old_track db 0 ; old value track |
19 | flp_label rb 15 ; Label and ID of inserted floppy disk |
19 | flp_label rb 15 ; Label and ID of inserted floppy disk |
20 | 20 | ||
21 | reserve_flp: |
21 | reserve_flp: |
22 | 22 | ||
23 | cli |
23 | cli |
24 | cmp [flp_status],0 |
24 | cmp [flp_status],0 |
25 | je reserve_flp_ok |
25 | je reserve_flp_ok |
26 | 26 | ||
27 | sti |
27 | sti |
28 | call change_task |
28 | call change_task |
29 | jmp reserve_flp |
29 | jmp reserve_flp |
30 | 30 | ||
31 | reserve_flp_ok: |
31 | reserve_flp_ok: |
32 | 32 | ||
33 | push eax |
33 | push eax |
34 | mov eax,[0x3000] |
34 | mov eax,[0x3000] |
35 | shl eax,5 |
35 | shl eax,5 |
36 | mov eax,[eax+0x3000+TASKDATA.pid] |
36 | mov eax,[eax+0x3000+TASKDATA.pid] |
37 | mov [flp_status],eax |
37 | mov [flp_status],eax |
38 | pop eax |
38 | pop eax |
39 | sti |
39 | sti |
40 | ret |
40 | ret |
41 | 41 | ||
42 | floppy_free_space: |
42 | floppy_free_space: |
43 | ;--------------------------------------------- |
43 | ;--------------------------------------------- |
44 | ; |
44 | ; |
45 | ; returns free space in edi |
45 | ; returns free space in edi |
46 | ; |
46 | ; |
47 | ;--------------------------------------------- |
47 | ;--------------------------------------------- |
48 | push eax ebx ecx |
48 | push eax ebx ecx |
49 | call read_flp_fat |
49 | call read_flp_fat |
50 | cmp [FDC_Status],0 |
50 | cmp [FDC_Status],0 |
51 | jne fdc_status_error_2 |
51 | jne fdc_status_error_2 |
52 | mov eax,0x282004 |
52 | mov eax,0x282004 |
53 | xor edi,edi |
53 | xor edi,edi |
54 | mov ecx,2847 ;1448000/512 |
54 | mov ecx,2847 ;1448000/512 |
55 | rdfs1_1: |
55 | rdfs1_1: |
56 | mov ebx,[eax] |
56 | mov ebx,[eax] |
57 | and ebx,4095 |
57 | and ebx,4095 |
58 | jne rdfs2_1 |
58 | jne rdfs2_1 |
59 | add edi,512 |
59 | add edi,512 |
60 | rdfs2_1: |
60 | rdfs2_1: |
61 | add eax,2 |
61 | add eax,2 |
62 | loop rdfs1_1 |
62 | loop rdfs1_1 |
63 | fdc_status_error_2: |
63 | fdc_status_error_2: |
64 | pop ecx ebx eax |
64 | pop ecx ebx eax |
65 | ret |
65 | ret |
66 | 66 | ||
67 | 67 | ||
68 | 68 | ||
69 | 69 | ||
70 | floppy_fileread: |
70 | floppy_fileread: |
71 | ;---------------------------------------------------------------- |
71 | ;---------------------------------------------------------------- |
72 | ; |
72 | ; |
73 | ; fileread - sys floppy |
73 | ; fileread - sys floppy |
74 | ; |
74 | ; |
75 | ; eax points to filename 11 chars - for root directory |
75 | ; eax points to filename 11 chars - for root directory |
76 | ; ebx first wanted block ; 1+ ; if 0 then set to 1 |
76 | ; ebx first wanted block ; 1+ ; if 0 then set to 1 |
77 | ; ecx number of blocks to read ; 1+ ; if 0 then set to 1 |
77 | ; ecx number of blocks to read ; 1+ ; if 0 then set to 1 |
78 | ; edx mem location to return data |
78 | ; edx mem location to return data |
79 | ; esi length of filename 12*X |
79 | ; esi length of filename 12*X |
80 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
80 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
81 | ; |
81 | ; |
82 | ; ret ebx = size or 0xffffffff file not found |
82 | ; ret ebx = size or 0xffffffff file not found |
83 | ; eax = 0 ok read or other = errormsg |
83 | ; eax = 0 ok read or other = errormsg |
84 | ; 10 = access denied |
84 | ; 10 = access denied |
85 | ;-------------------------------------------------------------- |
85 | ;-------------------------------------------------------------- |
86 | 86 | ||
87 | mov [save_flag],0 |
87 | mov [save_flag],0 |
88 | mov [path_pointer_flp],edi |
88 | mov [path_pointer_flp],edi |
89 | cmp esi,0 ; return ramdisk root |
89 | cmp esi,0 ; return ramdisk root |
90 | jne fr_noroot_1 |
90 | jne fr_noroot_1 |
91 | cmp ebx,224/16 |
91 | cmp ebx,224/16 |
92 | jbe fr_do_1 |
92 | jbe fr_do_1 |
93 | mov eax,5 |
93 | mov eax,5 |
94 | mov ebx,0 |
94 | mov ebx,0 |
95 | mov [flp_status],0 |
95 | mov [flp_status],0 |
96 | ret |
96 | ret |
97 | 97 | ||
98 | fr_do_1: |
98 | fr_do_1: |
99 | push ebx ecx edx |
99 | push ebx ecx edx |
100 | call read_flp_root |
100 | call read_flp_root |
101 | pop edx ecx ebx |
101 | pop edx ecx ebx |
102 | cmp [FDC_Status],0 |
102 | cmp [FDC_Status],0 |
103 | jne fdc_status_error_1 |
103 | jne fdc_status_error_1 |
104 | mov edi,edx |
104 | mov edi,edx |
105 | dec ebx |
105 | dec ebx |
106 | shl ebx,9 |
106 | shl ebx,9 |
107 | mov esi,0x8000 |
107 | mov esi,0x8000 |
108 | add esi,ebx |
108 | add esi,ebx |
109 | shl ecx,9 |
109 | shl ecx,9 |
110 | cld |
110 | cld |
111 | rep movsb |
111 | rep movsb |
112 | mov eax,0 ; ok read |
112 | mov eax,0 ; ok read |
113 | mov ebx,0 |
113 | mov ebx,0 |
114 | mov [flp_status],0 |
114 | mov [flp_status],0 |
115 | ret |
115 | ret |
116 | fdc_status_error_1: |
116 | fdc_status_error_1: |
117 | mov [flp_status],0 |
117 | mov [flp_status],0 |
118 | mov eax,10 |
118 | mov eax,10 |
119 | mov ebx,-1 |
119 | mov ebx,-1 |
120 | ret |
120 | ret |
121 | 121 | ||
122 | fr_noroot_1: |
122 | fr_noroot_1: |
123 | sub esp,32 |
123 | sub esp,32 |
124 | call expand_filename |
124 | call expand_filename |
125 | frfloppy_1: |
125 | frfloppy_1: |
126 | cmp ebx,0 |
126 | cmp ebx,0 |
127 | jne frfl5_1 |
127 | jne frfl5_1 |
128 | mov ebx,1 |
128 | mov ebx,1 |
129 | frfl5_1: |
129 | frfl5_1: |
130 | cmp ecx,0 |
130 | cmp ecx,0 |
131 | jne frfl6_1 |
131 | jne frfl6_1 |
132 | mov ecx,1 |
132 | mov ecx,1 |
133 | frfl6_1: |
133 | frfl6_1: |
134 | dec ebx |
134 | dec ebx |
135 | push eax |
135 | push eax |
136 | push eax ebx ecx edx esi edi |
136 | push eax ebx ecx edx esi edi |
137 | call read_flp_fat |
137 | call read_flp_fat |
138 | cmp [FDC_Status],0 |
138 | cmp [FDC_Status],0 |
139 | jne fdc_status_error_3_1 |
139 | jne fdc_status_error_3_1 |
140 | mov [FDD_Track],0 ; Öèëèíäð |
140 | mov [FDD_Track],0 ; Öèëèíäð |
141 | mov [FDD_Head],1 ; Ñòîðîíà |
141 | mov [FDD_Head],1 ; Ñòîðîíà |
142 | mov [FDD_Sector],2 ; Ñåêòîð |
142 | mov [FDD_Sector],2 ; Ñåêòîð |
143 | call SeekTrack |
143 | call SeekTrack |
144 | mov dh,14 |
144 | mov dh,14 |
145 | l.20_1: |
145 | l.20_1: |
146 | call ReadSectWithRetr |
146 | call ReadSectWithRetr |
147 | cmp [FDC_Status],0 |
147 | cmp [FDC_Status],0 |
148 | jne fdc_status_error_3_1 |
148 | jne fdc_status_error_3_1 |
149 | mov dl,16 |
149 | mov dl,16 |
150 | mov edi,0xD000 |
150 | mov edi,0xD000 |
151 | inc [FDD_Sector] |
151 | inc [FDD_Sector] |
152 | l.21_1: |
152 | l.21_1: |
153 | mov esi,eax ;Name of file we want |
153 | mov esi,eax ;Name of file we want |
154 | mov ecx,11 |
154 | mov ecx,11 |
155 | cld |
155 | cld |
156 | rep cmpsb ;Found the file? |
156 | rep cmpsb ;Found the file? |
157 | je fifound_1 ;Yes |
157 | je fifound_1 ;Yes |
158 | add ecx,21 |
158 | add ecx,21 |
159 | add edi, ecx ;Advance to next entry |
159 | add edi, ecx ;Advance to next entry |
160 | dec dl |
160 | dec dl |
161 | cmp dl,0 |
161 | cmp dl,0 |
162 | jne l.21_1 |
162 | jne l.21_1 |
163 | dec dh |
163 | dec dh |
164 | cmp dh,0 |
164 | cmp dh,0 |
165 | jne l.20_1 |
165 | jne l.20_1 |
166 | fdc_status_error_3: |
166 | fdc_status_error_3: |
167 | mov eax,5 ; file not found ? |
167 | mov eax,5 ; file not found ? |
168 | mov ebx,-1 |
168 | mov ebx,-1 |
169 | add esp,32+28 |
169 | add esp,32+28 |
170 | mov [flp_status],0 |
170 | mov [flp_status],0 |
171 | ret |
171 | ret |
172 | fdc_status_error_3_2: |
172 | fdc_status_error_3_2: |
173 | cmp [FDC_Status],0 |
173 | cmp [FDC_Status],0 |
174 | je fdc_status_error_3 |
174 | je fdc_status_error_3 |
175 | fdc_status_error_3_1: |
175 | fdc_status_error_3_1: |
176 | add esp,32+28 |
176 | add esp,32+28 |
177 | jmp fdc_status_error_1 |
177 | jmp fdc_status_error_1 |
178 | 178 | ||
179 | fifound_1: |
179 | fifound_1: |
180 | mov eax,[path_pointer_flp] |
180 | mov eax,[path_pointer_flp] |
181 | cmp [eax+36],byte 0 |
181 | cmp [eax+36],byte 0 |
182 | je fifound_2 |
182 | je fifound_2 |
183 | add edi,0xf |
183 | add edi,0xf |
184 | mov eax,[edi] |
184 | mov eax,[edi] |
185 | and eax,65535 |
185 | and eax,65535 |
186 | mov ebx,[path_pointer_flp] |
186 | mov ebx,[path_pointer_flp] |
187 | add ebx,36 |
187 | add ebx,36 |
188 | call get_cluster_of_a_path_flp |
188 | call get_cluster_of_a_path_flp |
189 | jc fdc_status_error_3_2 |
189 | jc fdc_status_error_3_2 |
190 | mov ebx,[ebx-11+28] ;file size |
190 | mov ebx,[ebx-11+28] ;file size |
191 | mov [esp+20],ebx |
191 | mov [esp+20],ebx |
192 | mov [esp+24],ebx |
192 | mov [esp+24],ebx |
193 | jmp fifound_3 |
193 | jmp fifound_3 |
194 | fifound_2: |
194 | fifound_2: |
195 | mov ebx,[edi-11+28] ;file size |
195 | mov ebx,[edi-11+28] ;file size |
196 | mov [esp+20],ebx |
196 | mov [esp+20],ebx |
197 | mov [esp+24],ebx |
197 | mov [esp+24],ebx |
198 | add edi,0xf |
198 | add edi,0xf |
199 | mov eax,[edi] |
199 | mov eax,[edi] |
200 | fifound_3: |
200 | fifound_3: |
201 | and eax,65535 |
201 | and eax,65535 |
202 | mov [n_sector],eax ;eax=cluster |
202 | mov [n_sector],eax ;eax=cluster |
203 | frnew_1: |
203 | frnew_1: |
204 | add eax,31 ;bootsector+2*fat+filenames |
204 | add eax,31 ;bootsector+2*fat+filenames |
205 | cmp [esp+16],dword 0 ; wanted cluster ? |
205 | cmp [esp+16],dword 0 ; wanted cluster ? |
206 | jne frfl7_1 |
206 | jne frfl7_1 |
207 | call read_chs_sector |
207 | call read_chs_sector |
208 | cmp [FDC_Status],0 |
208 | cmp [FDC_Status],0 |
209 | jne fdc_status_error_5 |
209 | jne fdc_status_error_5 |
210 | mov edi,[esp+8] |
210 | mov edi,[esp+8] |
211 | call give_back_application_data_1 |
211 | call give_back_application_data_1 |
212 | add [esp+8],dword 512 |
212 | add [esp+8],dword 512 |
213 | dec dword [esp+12] ; last wanted cluster ? |
213 | dec dword [esp+12] ; last wanted cluster ? |
214 | cmp [esp+12],dword 0 |
214 | cmp [esp+12],dword 0 |
215 | je frnoread_1 |
215 | je frnoread_1 |
216 | jmp frfl8_1 |
216 | jmp frfl8_1 |
217 | frfl7_1: |
217 | frfl7_1: |
218 | dec dword [esp+16] |
218 | dec dword [esp+16] |
219 | frfl8_1: |
219 | frfl8_1: |
220 | mov edi,[n_sector] |
220 | mov edi,[n_sector] |
221 | shl edi,1 ;find next cluster from FAT |
221 | shl edi,1 ;find next cluster from FAT |
222 | add edi,0x282000 |
222 | add edi,0x282000 |
223 | mov eax,[edi] |
223 | mov eax,[edi] |
224 | and eax,4095 |
224 | and eax,4095 |
225 | mov edi,eax |
225 | mov edi,eax |
226 | mov [n_sector],edi |
226 | mov [n_sector],edi |
227 | cmp edi,4095 ;eof - cluster |
227 | cmp edi,4095 ;eof - cluster |
228 | jz frnoread2_1 |
228 | jz frnoread2_1 |
229 | cmp [esp+24],dword 512 ;eof - size |
229 | cmp [esp+24],dword 512 ;eof - size |
230 | jb frnoread_1 |
230 | jb frnoread_1 |
231 | sub [esp+24],dword 512 |
231 | sub [esp+24],dword 512 |
232 | jmp frnew_1 |
232 | jmp frnew_1 |
233 | 233 | ||
234 | read_chs_sector: |
234 | read_chs_sector: |
235 | call calculate_chs |
235 | call calculate_chs |
236 | call ReadSectWithRetr |
236 | call ReadSectWithRetr |
237 | ret |
237 | ret |
238 | 238 | ||
239 | frnoread2_1: |
239 | frnoread2_1: |
240 | cmp [esp+16],dword 0 ; eof without read ? |
240 | cmp [esp+16],dword 0 ; eof without read ? |
241 | je frnoread_1 |
241 | je frnoread_1 |
242 | mov [fdc_irq_func],fdc_null |
242 | mov [fdc_irq_func],fdc_null |
243 | pop edi esi edx ecx |
243 | pop edi esi edx ecx |
244 | add esp,4 |
244 | add esp,4 |
245 | pop ebx ; ebx <- eax : size of file |
245 | pop ebx ; ebx <- eax : size of file |
246 | add esp,36 |
246 | add esp,36 |
247 | mov eax,6 ; end of file |
247 | mov eax,6 ; end of file |
248 | mov [flp_status],0 |
248 | mov [flp_status],0 |
249 | ret |
249 | ret |
250 | 250 | ||
251 | frnoread_1: |
251 | frnoread_1: |
252 | pop edi esi edx ecx |
252 | pop edi esi edx ecx |
253 | add esp,4 |
253 | add esp,4 |
254 | pop ebx ; ebx <- eax : size of file |
254 | pop ebx ; ebx <- eax : size of file |
255 | add esp,36 |
255 | add esp,36 |
256 | mov eax,0 |
256 | mov eax,0 |
257 | mov [flp_status],0 |
257 | mov [flp_status],0 |
258 | ret |
258 | ret |
259 | 259 | ||
260 | fdc_status_error_5: |
260 | fdc_status_error_5: |
261 | pop edi esi edx ecx |
261 | pop edi esi edx ecx |
262 | add esp,4 |
262 | add esp,4 |
263 | pop ebx ; ebx <- eax : size of file |
263 | pop ebx ; ebx <- eax : size of file |
264 | add esp,36 |
264 | add esp,36 |
265 | jmp fdc_status_error_1 |
265 | jmp fdc_status_error_1 |
266 | 266 | ||
267 | read_flp_root: |
267 | read_flp_root: |
268 | pusha |
268 | pusha |
269 | call check_label |
269 | call check_label |
270 | cmp [FDC_Status],0 |
270 | cmp [FDC_Status],0 |
271 | jne unnecessary_root_read |
271 | jne unnecessary_root_read |
272 | cmp [root_read],1 |
272 | cmp [root_read],1 |
273 | je unnecessary_root_read |
273 | je unnecessary_root_read |
274 | mov [FDD_Track],0 ; Öèëèíäð |
274 | mov [FDD_Track],0 ; Öèëèíäð |
275 | mov [FDD_Head],1 ; Ñòîðîíà |
275 | mov [FDD_Head],1 ; Ñòîðîíà |
276 | mov [FDD_Sector],2 ; Ñåêòîð |
276 | mov [FDD_Sector],2 ; Ñåêòîð |
277 | mov edi,0x8000 |
277 | mov edi,0x8000 |
278 | call SeekTrack |
278 | call SeekTrack |
279 | read_flp_root_1: |
279 | read_flp_root_1: |
280 | call ReadSectWithRetr |
280 | call ReadSectWithRetr |
281 | cmp [FDC_Status],0 |
281 | cmp [FDC_Status],0 |
282 | jne unnecessary_root_read |
282 | jne unnecessary_root_read |
283 | push edi |
283 | push edi |
284 | call give_back_application_data_1 |
284 | call give_back_application_data_1 |
285 | pop edi |
285 | pop edi |
286 | add edi,512 |
286 | add edi,512 |
287 | inc [FDD_Sector] |
287 | inc [FDD_Sector] |
288 | cmp [FDD_Sector],16 |
288 | cmp [FDD_Sector],16 |
289 | jne read_flp_root_1 |
289 | jne read_flp_root_1 |
290 | mov [root_read],1 |
290 | mov [root_read],1 |
291 | unnecessary_root_read: |
291 | unnecessary_root_read: |
292 | popa |
292 | popa |
293 | ret |
293 | ret |
294 | 294 | ||
295 | 295 | ||
296 | read_flp_fat: |
296 | read_flp_fat: |
297 | pusha |
297 | pusha |
298 | call check_label |
298 | call check_label |
299 | cmp [FDC_Status],0 |
299 | cmp [FDC_Status],0 |
300 | jne unnecessary_flp_fat |
300 | jne unnecessary_flp_fat |
301 | cmp [flp_fat],1 |
301 | cmp [flp_fat],1 |
302 | je unnecessary_flp_fat |
302 | je unnecessary_flp_fat |
303 | mov [FDD_Track],0 ; Öèëèíäð |
303 | mov [FDD_Track],0 ; Öèëèíäð |
304 | mov [FDD_Head],0 ; Ñòîðîíà |
304 | mov [FDD_Head],0 ; Ñòîðîíà |
305 | mov [FDD_Sector],2 ; Ñåêòîð |
305 | mov [FDD_Sector],2 ; Ñåêòîð |
306 | mov edi,0x8000 |
306 | mov edi,0x8000 |
307 | call SeekTrack |
307 | call SeekTrack |
308 | read_flp_fat_1: |
308 | read_flp_fat_1: |
309 | call ReadSectWithRetr |
309 | call ReadSectWithRetr |
310 | cmp [FDC_Status],0 |
310 | cmp [FDC_Status],0 |
311 | jne unnecessary_flp_fat |
311 | jne unnecessary_flp_fat |
312 | push edi |
312 | push edi |
313 | call give_back_application_data_1 |
313 | call give_back_application_data_1 |
314 | pop edi |
314 | pop edi |
315 | add edi,512 |
315 | add edi,512 |
316 | inc [FDD_Sector] |
316 | inc [FDD_Sector] |
317 | cmp [FDD_Sector],19 |
317 | cmp [FDD_Sector],19 |
318 | jne read_flp_fat_1 |
318 | jne read_flp_fat_1 |
319 | mov [FDD_Sector],1 |
319 | mov [FDD_Sector],1 |
320 | mov [FDD_Head],1 |
320 | mov [FDD_Head],1 |
321 | call ReadSectWithRetr |
321 | call ReadSectWithRetr |
322 | cmp [FDC_Status],0 |
322 | cmp [FDC_Status],0 |
323 | jne unnecessary_flp_fat |
323 | jne unnecessary_flp_fat |
324 | call give_back_application_data_1 |
324 | call give_back_application_data_1 |
325 | call calculatefatchain_flp |
325 | call calculatefatchain_flp |
326 | mov [root_read],0 |
326 | mov [root_read],0 |
327 | mov [flp_fat],1 |
327 | mov [flp_fat],1 |
328 | unnecessary_flp_fat: |
328 | unnecessary_flp_fat: |
329 | popa |
329 | popa |
330 | ret |
330 | ret |
331 | 331 | ||
332 | calculatefatchain_flp: |
332 | calculatefatchain_flp: |
333 | pushad |
333 | pushad |
334 | 334 | ||
335 | mov esi,0x8000 |
335 | mov esi,0x8000 |
336 | mov edi,0x282000 |
336 | mov edi,0x282000 |
337 | 337 | ||
338 | fcnew_1: |
338 | fcnew_1: |
339 | mov eax,dword [esi] |
339 | mov eax,dword [esi] |
340 | mov ebx,dword [esi+4] |
340 | mov ebx,dword [esi+4] |
341 | mov ecx,dword [esi+8] |
341 | mov ecx,dword [esi+8] |
342 | mov edx,ecx |
342 | mov edx,ecx |
343 | shr edx,4 ;8 ok |
343 | shr edx,4 ;8 ok |
344 | shr dx,4 ;7 ok |
344 | shr dx,4 ;7 ok |
345 | xor ch,ch |
345 | xor ch,ch |
346 | shld ecx,ebx,20 ;6 ok |
346 | shld ecx,ebx,20 ;6 ok |
347 | shr cx,4 ;5 ok |
347 | shr cx,4 ;5 ok |
348 | shld ebx,eax,12 |
348 | shld ebx,eax,12 |
349 | and ebx,0x0fffffff ;4 ok |
349 | and ebx,0x0fffffff ;4 ok |
350 | shr bx,4 ;3 ok |
350 | shr bx,4 ;3 ok |
351 | shl eax,4 |
351 | shl eax,4 |
352 | and eax,0x0fffffff ;2 ok |
352 | and eax,0x0fffffff ;2 ok |
353 | shr ax,4 ;1 ok |
353 | shr ax,4 ;1 ok |
354 | mov dword [edi],eax |
354 | mov dword [edi],eax |
355 | add edi,4 |
355 | add edi,4 |
356 | mov dword [edi],ebx |
356 | mov dword [edi],ebx |
357 | add edi,4 |
357 | add edi,4 |
358 | mov dword [edi],ecx |
358 | mov dword [edi],ecx |
359 | add edi,4 |
359 | add edi,4 |
360 | mov dword [edi],edx |
360 | mov dword [edi],edx |
361 | add edi,4 |
361 | add edi,4 |
362 | add esi,12 |
362 | add esi,12 |
363 | 363 | ||
364 | cmp edi,0x282000+2856*2 ;2849 clusters |
364 | cmp edi,0x282000+2856*2 ;2849 clusters |
365 | jnz fcnew_1 |
365 | jnz fcnew_1 |
366 | 366 | ||
367 | popad |
367 | popad |
368 | ret |
368 | ret |
369 | 369 | ||
370 | check_label: |
370 | check_label: |
371 | pushad |
371 | pushad |
372 | mov [FDD_Track],0 ; Öèëèíäð |
372 | mov [FDD_Track],0 ; Öèëèíäð |
373 | mov [FDD_Head],0 ; Ñòîðîíà |
373 | mov [FDD_Head],0 ; Ñòîðîíà |
374 | mov [FDD_Sector],1 ; Ñåêòîð |
374 | mov [FDD_Sector],1 ; Ñåêòîð |
375 | call SetUserInterrupts |
375 | call SetUserInterrupts |
376 | call FDDMotorON |
376 | call FDDMotorON |
377 | call RecalibrateFDD |
377 | call RecalibrateFDD |
378 | cmp [FDC_Status],0 |
378 | cmp [FDC_Status],0 |
379 | jne fdc_status_error |
379 | jne fdc_status_error |
380 | call SeekTrack |
380 | call SeekTrack |
381 | cmp [FDC_Status],0 |
381 | cmp [FDC_Status],0 |
382 | jne fdc_status_error |
382 | jne fdc_status_error |
383 | call ReadSectWithRetr |
383 | call ReadSectWithRetr |
384 | cmp [FDC_Status],0 |
384 | cmp [FDC_Status],0 |
385 | jne fdc_status_error |
385 | jne fdc_status_error |
386 | mov esi,flp_label |
386 | mov esi,flp_label |
387 | mov edi,0xD000+39 |
387 | mov edi,0xD000+39 |
388 | mov ecx,15 |
388 | mov ecx,15 |
389 | cld |
389 | cld |
390 | rep cmpsb |
390 | rep cmpsb |
391 | je same_label |
391 | je same_label |
392 | mov [root_read],0 |
392 | mov [root_read],0 |
393 | mov [flp_fat],0 |
393 | mov [flp_fat],0 |
394 | same_label: |
394 | same_label: |
395 | mov esi,0xD000+39 |
395 | mov esi,0xD000+39 |
396 | mov edi,flp_label |
396 | mov edi,flp_label |
397 | mov ecx,15 |
397 | mov ecx,15 |
398 | cld |
398 | cld |
399 | rep movsb |
399 | rep movsb |
400 | popad |
400 | popad |
401 | ret |
401 | ret |
402 | fdc_status_error: |
402 | fdc_status_error: |
403 | popad |
403 | popad |
404 | ret |
404 | ret |
405 | 405 | ||
406 | save_flp_root: |
406 | save_flp_root: |
407 | pusha |
407 | pusha |
408 | call check_label |
408 | call check_label |
409 | cmp [FDC_Status],0 |
409 | cmp [FDC_Status],0 |
410 | jne unnecessary_root_save |
410 | jne unnecessary_root_save |
411 | cmp [root_read],0 |
411 | cmp [root_read],0 |
412 | je unnecessary_root_save |
412 | je unnecessary_root_save |
413 | mov [FDD_Track],0 ; Öèëèíäð |
413 | mov [FDD_Track],0 ; Öèëèíäð |
414 | mov [FDD_Head],1 ; Ñòîðîíà |
414 | mov [FDD_Head],1 ; Ñòîðîíà |
415 | mov [FDD_Sector],2 ; Ñåêòîð |
415 | mov [FDD_Sector],2 ; Ñåêòîð |
416 | mov esi,0x8000 |
416 | mov esi,0x8000 |
417 | call SeekTrack |
417 | call SeekTrack |
418 | save_flp_root_1: |
418 | save_flp_root_1: |
419 | push esi |
419 | push esi |
420 | call take_data_from_application_1 |
420 | call take_data_from_application_1 |
421 | pop esi |
421 | pop esi |
422 | add esi,512 |
422 | add esi,512 |
423 | call WriteSectWithRetr |
423 | call WriteSectWithRetr |
424 | cmp [FDC_Status],0 |
424 | cmp [FDC_Status],0 |
425 | jne unnecessary_root_save |
425 | jne unnecessary_root_save |
426 | inc [FDD_Sector] |
426 | inc [FDD_Sector] |
427 | cmp [FDD_Sector],16 |
427 | cmp [FDD_Sector],16 |
428 | jne save_flp_root_1 |
428 | jne save_flp_root_1 |
429 | unnecessary_root_save: |
429 | unnecessary_root_save: |
430 | mov [fdc_irq_func],fdc_null |
430 | mov [fdc_irq_func],fdc_null |
431 | popa |
431 | popa |
432 | ret |
432 | ret |
433 | 433 | ||
434 | save_flp_fat: |
434 | save_flp_fat: |
435 | pusha |
435 | pusha |
436 | call check_label |
436 | call check_label |
437 | cmp [FDC_Status],0 |
437 | cmp [FDC_Status],0 |
438 | jne unnecessary_flp_fat_save |
438 | jne unnecessary_flp_fat_save |
439 | cmp [flp_fat],0 |
439 | cmp [flp_fat],0 |
440 | je unnecessary_flp_fat_save |
440 | je unnecessary_flp_fat_save |
441 | call restorefatchain_flp |
441 | call restorefatchain_flp |
442 | mov [FDD_Track],0 ; Öèëèíäð |
442 | mov [FDD_Track],0 ; Öèëèíäð |
443 | mov [FDD_Head],0 ; Ñòîðîíà |
443 | mov [FDD_Head],0 ; Ñòîðîíà |
444 | mov [FDD_Sector],2 ; Ñåêòîð |
444 | mov [FDD_Sector],2 ; Ñåêòîð |
445 | mov esi,0x8000 |
445 | mov esi,0x8000 |
446 | call SeekTrack |
446 | call SeekTrack |
447 | save_flp_fat_1: |
447 | save_flp_fat_1: |
448 | push esi |
448 | push esi |
449 | call take_data_from_application_1 |
449 | call take_data_from_application_1 |
450 | pop esi |
450 | pop esi |
451 | add esi,512 |
451 | add esi,512 |
452 | call WriteSectWithRetr |
452 | call WriteSectWithRetr |
453 | cmp [FDC_Status],0 |
453 | cmp [FDC_Status],0 |
454 | jne unnecessary_flp_fat_save |
454 | jne unnecessary_flp_fat_save |
455 | inc [FDD_Sector] |
455 | inc [FDD_Sector] |
456 | cmp [FDD_Sector],19 |
456 | cmp [FDD_Sector],19 |
457 | jne save_flp_fat_1 |
457 | jne save_flp_fat_1 |
458 | mov [FDD_Sector],1 |
458 | mov [FDD_Sector],1 |
459 | mov [FDD_Head],1 |
459 | mov [FDD_Head],1 |
460 | call take_data_from_application_1 |
460 | call take_data_from_application_1 |
461 | call WriteSectWithRetr |
461 | call WriteSectWithRetr |
462 | cmp [FDC_Status],0 |
462 | cmp [FDC_Status],0 |
463 | jne unnecessary_flp_fat_save |
463 | jne unnecessary_flp_fat_save |
464 | mov [root_read],0 |
464 | mov [root_read],0 |
465 | unnecessary_flp_fat_save: |
465 | unnecessary_flp_fat_save: |
466 | mov [fdc_irq_func],fdc_null |
466 | mov [fdc_irq_func],fdc_null |
467 | popa |
467 | popa |
468 | ret |
468 | ret |
469 | 469 | ||
470 | 470 | ||
471 | restorefatchain_flp: ; restore fat chain |
471 | restorefatchain_flp: ; restore fat chain |
472 | pushad |
472 | pushad |
473 | 473 | ||
474 | mov esi,0x282000 |
474 | mov esi,0x282000 |
475 | mov edi,0x8000 |
475 | mov edi,0x8000 |
476 | 476 | ||
477 | fcnew2_1: |
477 | fcnew2_1: |
478 | mov eax,dword [esi] |
478 | mov eax,dword [esi] |
479 | mov ebx,dword [esi+4] |
479 | mov ebx,dword [esi+4] |
480 | shl ax,4 |
480 | shl ax,4 |
481 | shl eax,4 |
481 | shl eax,4 |
482 | shl bx,4 |
482 | shl bx,4 |
483 | shr ebx,4 |
483 | shr ebx,4 |
484 | shrd eax,ebx,8 |
484 | shrd eax,ebx,8 |
485 | shr ebx,8 |
485 | shr ebx,8 |
486 | mov dword [edi],eax |
486 | mov dword [edi],eax |
487 | add edi,4 |
487 | add edi,4 |
488 | mov word [edi],bx |
488 | mov word [edi],bx |
489 | add edi,2 |
489 | add edi,2 |
490 | add esi,8 |
490 | add esi,8 |
491 | 491 | ||
492 | cmp edi,0x8000+0x1200 ;4274 bytes - all used FAT |
492 | cmp edi,0x8000+0x1200 ;4274 bytes - all used FAT |
493 | jb fcnew2_1 |
493 | jb fcnew2_1 |
494 | 494 | ||
495 | mov esi,0x8000 ; duplicate fat chain |
495 | mov esi,0x8000 ; duplicate fat chain |
496 | mov edi,0x8000+0x1200 |
496 | mov edi,0x8000+0x1200 |
497 | mov ecx,0x1200/4 |
497 | mov ecx,0x1200/4 |
498 | cld |
498 | cld |
499 | rep movsd |
499 | rep movsd |
500 | 500 | ||
501 | popad |
501 | popad |
502 | ret |
502 | ret |
503 | 503 | ||
504 | 504 | ||
505 | floppy_filedelete: |
505 | floppy_filedelete: |
506 | ;-------------------------------------------- |
506 | ;-------------------------------------------- |
507 | ; |
507 | ; |
508 | ; filedelete - sys floppy |
508 | ; filedelete - sys floppy |
509 | ; in: |
509 | ; in: |
510 | ; eax - filename 11 chars - for root directory |
510 | ; eax - filename 11 chars - for root directory |
511 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
511 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
512 | ; |
512 | ; |
513 | ; out: |
513 | ; out: |
514 | ; eax - 0 = successful, 1 = file not found, 10 = access denied |
514 | ; eax - 0 = successful, 1 = file not found, 10 = access denied |
515 | ; |
515 | ; |
516 | ;-------------------------------------------- |
516 | ;-------------------------------------------- |
517 | mov [path_pointer_flp],edi |
517 | mov [path_pointer_flp],edi |
518 | mov [save_flag],0 |
518 | mov [save_flag],0 |
519 | mov ebp,1 ; file not found as default |
519 | mov ebp,1 ; file not found as default |
520 | filedelete_newtry_1: |
520 | filedelete_newtry_1: |
521 | sub esp,32 |
521 | sub esp,32 |
522 | call expand_filename |
522 | call expand_filename |
523 | push eax ebx ecx edx esi edi |
523 | push eax ebx ecx edx esi edi |
524 | call read_flp_fat |
524 | call read_flp_fat |
525 | cmp [FDC_Status],0 |
525 | cmp [FDC_Status],0 |
526 | jne frnoreadd_1 |
526 | jne frnoreadd_1 |
527 | mov [FDD_Track],0 ; Öèëèíäð |
527 | mov [FDD_Track],0 ; Öèëèíäð |
528 | mov [FDD_Head],1 ; Ñòîðîíà |
528 | mov [FDD_Head],1 ; Ñòîðîíà |
529 | mov [FDD_Sector],2 ; Ñåêòîð |
529 | mov [FDD_Sector],2 ; Ñåêòîð |
530 | call SeekTrack |
530 | call SeekTrack |
531 | mov dh,14 |
531 | mov dh,14 |
532 | l.20_2: |
532 | l.20_2: |
533 | call ReadSectWithRetr |
533 | call ReadSectWithRetr |
534 | cmp [FDC_Status],0 |
534 | cmp [FDC_Status],0 |
535 | jne fdc_status_error_4 |
535 | jne fdc_status_error_4 |
536 | mov dl,16 |
536 | mov dl,16 |
537 | mov edi,0xD000 |
537 | mov edi,0xD000 |
538 | inc [FDD_Sector] |
538 | inc [FDD_Sector] |
539 | l.21_2: |
539 | l.21_2: |
540 | mov esi,eax ;Name of file we want |
540 | mov esi,eax ;Name of file we want |
541 | mov ecx,11 |
541 | mov ecx,11 |
542 | cld |
542 | cld |
543 | rep cmpsb ;Found the file? |
543 | rep cmpsb ;Found the file? |
544 | je fifoundd_1 ;Yes |
544 | je fifoundd_1 ;Yes |
545 | add ecx,21 |
545 | add ecx,21 |
546 | add edi, ecx ;Advance to next entry |
546 | add edi, ecx ;Advance to next entry |
547 | dec dl |
547 | dec dl |
548 | jne l.21_2 |
548 | jne l.21_2 |
549 | dec dh |
549 | dec dh |
550 | jne l.20_2 |
550 | jne l.20_2 |
551 | jmp frnoreadd_1 |
551 | jmp frnoreadd_1 |
552 | 552 | ||
553 | fdc_status_error_4: |
553 | fdc_status_error_4: |
554 | pop edi esi edx ecx ebx eax |
554 | pop edi esi edx ecx ebx eax |
555 | add esp,32 |
555 | add esp,32 |
556 | jmp fdc_status_error_1 |
556 | jmp fdc_status_error_1 |
557 | 557 | ||
558 | fifoundd_1: |
558 | fifoundd_1: |
559 | mov eax,[path_pointer_flp] |
559 | mov eax,[path_pointer_flp] |
560 | cmp [eax+36],byte 0 |
560 | cmp [eax+36],byte 0 |
561 | je fifoundd_2 |
561 | je fifoundd_2 |
562 | movzx eax, word [edi+0xf] |
562 | movzx eax, word [edi+0xf] |
563 | mov ebx,[path_pointer_flp] |
563 | mov ebx,[path_pointer_flp] |
564 | add ebx,36 |
564 | add ebx,36 |
565 | call get_cluster_of_a_path_flp |
565 | call get_cluster_of_a_path_flp |
566 | jc frnoreadd_1_1 |
566 | jc frnoreadd_1_1 |
567 | mov edi,ebx |
567 | mov edi,ebx |
568 | add edi,11 |
568 | add edi,11 |
569 | jmp fifoundd_2_1 |
569 | jmp fifoundd_2_1 |
570 | fifoundd_2: |
570 | fifoundd_2: |
571 | dec [FDD_Sector] |
571 | dec [FDD_Sector] |
572 | fifoundd_2_1: |
572 | fifoundd_2_1: |
573 | mov [edi-11],byte 0xE5 ;mark filename deleted |
573 | mov [edi-11],byte 0xE5 ;mark filename deleted |
574 | movzx edi, word [edi+0xf] ;edi = cluster |
574 | movzx edi, word [edi+0xf] ;edi = cluster |
575 | frnewd_1: |
575 | frnewd_1: |
576 | shl edi,1 ;find next cluster from FAT |
576 | shl edi,1 ;find next cluster from FAT |
577 | add edi,0x282000 |
577 | add edi,0x282000 |
578 | mov eax,[edi] |
578 | mov eax,[edi] |
579 | mov [edi],word 0x0 ;clear fat chain cluster |
579 | mov [edi],word 0x0 ;clear fat chain cluster |
580 | and eax,4095 |
580 | and eax,4095 |
581 | mov edi,eax |
581 | mov edi,eax |
582 | cmp edi,dword 4095 ;last cluster ? |
582 | cmp edi,dword 4095 ;last cluster ? |
583 | jz frnoreadd2_1 |
583 | jz frnoreadd2_1 |
584 | jmp frnewd_1 |
584 | jmp frnewd_1 |
585 | 585 | ||
586 | frnoreadd2_1: |
586 | frnoreadd2_1: |
587 | call WriteSectWithRetr |
587 | call WriteSectWithRetr |
588 | cmp [FDC_Status],0 |
588 | cmp [FDC_Status],0 |
589 | jne fdc_status_error_4 |
589 | jne fdc_status_error_4 |
590 | call save_flp_fat |
590 | call save_flp_fat |
591 | cmp [FDC_Status],0 |
591 | cmp [FDC_Status],0 |
592 | jne fdc_status_error_4 |
592 | jne fdc_status_error_4 |
593 | ; pop edi esi edx ecx ebx eax |
593 | ; pop edi esi edx ecx ebx eax |
594 | ; add esp,32 |
594 | ; add esp,32 |
595 | mov ebp,0 ; file found |
595 | mov ebp,0 ; file found |
596 | ; jmp filedelete_newtry_1 |
596 | ; jmp filedelete_newtry_1 |
597 | jmp frnoreadd_1 |
597 | jmp frnoreadd_1 |
598 | 598 | ||
599 | frnoreadd_1_1: |
599 | frnoreadd_1_1: |
600 | cmp [FDC_Status],0 |
600 | cmp [FDC_Status],0 |
601 | jne fdc_status_error_4 |
601 | jne fdc_status_error_4 |
602 | frnoreadd_1: |
602 | frnoreadd_1: |
603 | pop edi esi edx ecx ebx eax |
603 | pop edi esi edx ecx ebx eax |
604 | add esp,32 |
604 | add esp,32 |
605 | mov eax,ebp |
605 | mov eax,ebp |
606 | ret |
606 | ret |
607 | 607 | ||
608 | floppy_filesave: |
608 | floppy_filesave: |
609 | ;---------------------------------------------------------- |
609 | ;---------------------------------------------------------- |
610 | ; |
610 | ; |
611 | ; filesave - sys floppy |
611 | ; filesave - sys floppy |
612 | ; |
612 | ; |
613 | ; eax ; pointer to file name 11 chars - for root directory |
613 | ; eax ; pointer to file name 11 chars - for root directory |
614 | ; ebx ; buffer |
614 | ; ebx ; buffer |
615 | ; ecx ; count to write in bytes |
615 | ; ecx ; count to write in bytes |
616 | ; edx ; 0 create new , 1 append |
616 | ; edx ; 0 create new , 1 append |
617 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
617 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
618 | ; |
618 | ; |
619 | ; output : eax = 0 - ok |
619 | ; output : eax = 0 - ok |
620 | ; 5 - file not found / directory not found |
620 | ; 5 - file not found / directory not found |
621 | ; 8 - disk full |
621 | ; 8 - disk full |
622 | ; 10 - access denied |
622 | ; 10 - access denied |
623 | ;----------------------------------------------------------- |
623 | ;----------------------------------------------------------- |
624 | mov [path_pointer_flp],edi |
624 | mov [path_pointer_flp],edi |
625 | sub esp,32 |
625 | sub esp,32 |
626 | call expand_filename |
626 | call expand_filename |
627 | cmp edx,0 |
627 | cmp edx,0 |
628 | jnz fsdel_1 |
628 | jnz fsdel_1 |
629 | pusha |
629 | pusha |
630 | call floppy_filedelete |
630 | call floppy_filedelete |
631 | cmp [FDC_Status],0 |
631 | cmp [FDC_Status],0 |
632 | jne fdc_status_error_6 |
632 | jne fdc_status_error_6 |
633 | popa |
633 | popa |
634 | mov [save_flag],1 |
634 | mov [save_flag],1 |
635 | fsdel_1: |
635 | fsdel_1: |
636 | call floppy_free_space |
636 | call floppy_free_space |
637 | cmp [FDC_Status],0 |
637 | cmp [FDC_Status],0 |
638 | jne fdc_status_error_6 |
638 | jne fdc_status_error_6 |
639 | cmp ecx,edi |
639 | cmp ecx,edi |
640 | jb rd_do_save_1 |
640 | jb rd_do_save_1 |
641 | add esp,32 |
641 | add esp,32 |
642 | mov eax,8 ; not enough free space |
642 | mov eax,8 ; not enough free space |
643 | mov [flp_status],0 |
643 | mov [flp_status],0 |
644 | ret |
644 | ret |
645 | 645 | ||
646 | fdc_status_error_6: |
646 | fdc_status_error_6: |
647 | popa |
647 | popa |
648 | add esp,32 |
648 | add esp,32 |
649 | jmp fdc_status_error_1 |
649 | jmp fdc_status_error_1 |
650 | 650 | ||
651 | rd_do_save_1: |
651 | rd_do_save_1: |
652 | push eax ebx ecx edx esi edi |
652 | push eax ebx ecx edx esi edi |
653 | call read_flp_fat |
653 | call read_flp_fat |
654 | cmp [FDC_Status],0 |
654 | cmp [FDC_Status],0 |
655 | jne fdc_status_error_7 |
655 | jne fdc_status_error_7 |
656 | push eax |
656 | push eax |
657 | mov eax,[path_pointer_flp] |
657 | mov eax,[path_pointer_flp] |
658 | cmp [eax+36],byte 0 |
658 | cmp [eax+36],byte 0 |
659 | jne fifoundds_2 |
659 | jne fifoundds_2 |
660 | pop eax |
660 | pop eax |
661 | mov [save_root_flag],1 |
661 | mov [save_root_flag],1 |
662 | call read_flp_root |
662 | call read_flp_root |
663 | cmp [FDC_Status],0 |
663 | cmp [FDC_Status],0 |
664 | jne fdc_status_error_7 |
664 | jne fdc_status_error_7 |
665 | mov edi,0x8000 ;Point at directory |
665 | mov edi,0x8000 ;Point at directory |
666 | mov edx,224 +1 |
666 | mov edx,224 +1 |
667 | ; find an empty spot for filename in the root dir |
667 | ; find an empty spot for filename in the root dir |
668 | l20ds_1: |
668 | l20ds_1: |
669 | sub edx,1 |
669 | sub edx,1 |
670 | jz frnoreadds_1 |
670 | jz frnoreadds_1 |
671 | l21ds_1: |
671 | l21ds_1: |
672 | cmp [edi],byte 0xE5 |
672 | cmp [edi],byte 0xE5 |
673 | jz fifoundds_1 |
673 | jz fifoundds_1 |
674 | cmp [edi],byte 0x0 |
674 | cmp [edi],byte 0x0 |
675 | jz fifoundds_1 |
675 | jz fifoundds_1 |
676 | add edi,32 ; Advance to next entry |
676 | add edi,32 ; Advance to next entry |
677 | jmp l20ds_1 |
677 | jmp l20ds_1 |
678 | 678 | ||
679 | fifoundds_2: |
679 | fifoundds_2: |
680 | pop eax |
680 | pop eax |
681 | mov [save_root_flag],0 |
681 | mov [save_root_flag],0 |
682 | mov [FDD_Track],0 ; Öèëèíäð |
682 | mov [FDD_Track],0 ; Öèëèíäð |
683 | mov [FDD_Head],1 ; Ñòîðîíà |
683 | mov [FDD_Head],1 ; Ñòîðîíà |
684 | mov [FDD_Sector],2 ; Ñåêòîð |
684 | mov [FDD_Sector],2 ; Ñåêòîð |
685 | call SeekTrack |
685 | call SeekTrack |
686 | mov dh,14 |
686 | mov dh,14 |
687 | l.20_3: |
687 | l.20_3: |
688 | call ReadSectWithRetr |
688 | call ReadSectWithRetr |
689 | cmp [FDC_Status],0 |
689 | cmp [FDC_Status],0 |
690 | jne fdc_status_error_7 |
690 | jne fdc_status_error_7 |
691 | mov dl,16 |
691 | mov dl,16 |
692 | mov edi,0xD000 |
692 | mov edi,0xD000 |
693 | inc [FDD_Sector] |
693 | inc [FDD_Sector] |
694 | l.21_3: |
694 | l.21_3: |
695 | mov esi,eax ;Name of file we want |
695 | mov esi,eax ;Name of file we want |
696 | mov ecx,11 |
696 | mov ecx,11 |
697 | cld |
697 | cld |
698 | rep cmpsb ;Found the file? |
698 | rep cmpsb ;Found the file? |
699 | je fifoundds_3 ;Yes |
699 | je fifoundds_3 ;Yes |
700 | add ecx,21 |
700 | add ecx,21 |
701 | add edi, ecx ;Advance to next entry |
701 | add edi, ecx ;Advance to next entry |
702 | dec dl |
702 | dec dl |
703 | jne l.21_3 |
703 | jne l.21_3 |
704 | dec dh |
704 | dec dh |
705 | jne l.20_3 |
705 | jne l.20_3 |
706 | fdc_status_error_8: |
706 | fdc_status_error_8: |
707 | pop edi esi edx ecx ebx eax |
707 | pop edi esi edx ecx ebx eax |
708 | mov eax,5 ; file not found ? |
708 | mov eax,5 ; file not found ? |
709 | mov ebx,-1 |
709 | mov ebx,-1 |
710 | add esp,32 |
710 | add esp,32 |
711 | mov [flp_status],0 |
711 | mov [flp_status],0 |
712 | ret |
712 | ret |
713 | 713 | ||
714 | fifoundds_3: |
714 | fifoundds_3: |
715 | add edi,0xf |
715 | add edi,0xf |
716 | mov eax,[edi] |
716 | mov eax,[edi] |
717 | and eax,65535 |
717 | and eax,65535 |
718 | mov ebx,[path_pointer_flp] |
718 | mov ebx,[path_pointer_flp] |
719 | add ebx,36 |
719 | add ebx,36 |
720 | call get_cluster_of_a_path_flp |
720 | call get_cluster_of_a_path_flp |
721 | jc fdc_status_error_7_1 |
721 | jc fdc_status_error_7_1 |
722 | found_directory_for_writing_flp: |
722 | found_directory_for_writing_flp: |
723 | call analyze_directory_to_write_flp |
723 | call analyze_directory_to_write_flp |
724 | jc fdc_status_error_7_1 |
724 | jc fdc_status_error_7_1 |
725 | mov edi,ebx |
725 | mov edi,ebx |
726 | fifoundds_1: |
726 | fifoundds_1: |
727 | push edi ; move the filename to root dir |
727 | push edi ; move the filename to root dir |
728 | mov esi,[esp+4+20] |
728 | mov esi,[esp+4+20] |
729 | cmp [save_root_flag],0 |
729 | cmp [save_root_flag],0 |
730 | jne fifoundds_4 |
730 | jne fifoundds_4 |
731 | mov esi,[pointer_file_name_flp] |
731 | mov esi,[pointer_file_name_flp] |
732 | fifoundds_4: |
732 | fifoundds_4: |
733 | mov ecx,11 |
733 | mov ecx,11 |
734 | cld |
734 | cld |
735 | rep movsb |
735 | rep movsb |
736 | pop edi |
736 | pop edi |
737 | mov edx,edi |
737 | mov edx,edi |
738 | add edx,11+0xf ; edx <- cluster save position |
738 | add edx,11+0xf ; edx <- cluster save position |
739 | mov ebx,[esp+12] ; save file size |
739 | mov ebx,[esp+12] ; save file size |
740 | mov [edi+28],ebx |
740 | mov [edi+28],ebx |
741 | mov [edi+11],byte 0x20 ; attribute |
741 | mov [edi+11],byte 0x20 ; attribute |
742 | call get_date_for_file ; from FAT32.INC |
742 | call get_date_for_file ; from FAT32.INC |
743 | mov [edi+24],ax ; date |
743 | mov [edi+24],ax ; date |
744 | mov [edi+18],ax ; date |
744 | mov [edi+18],ax ; date |
745 | call get_time_for_file ; from FAT32.INC |
745 | call get_time_for_file ; from FAT32.INC |
746 | mov [edi+22],ax ; time |
746 | mov [edi+22],ax ; time |
747 | xor ax,ax |
747 | xor ax,ax |
748 | mov [edi+20],ax |
748 | mov [edi+20],ax |
749 | mov ebx,1 ; first cluster |
749 | mov ebx,1 ; first cluster |
750 | cmp [save_root_flag],0 |
750 | cmp [save_root_flag],0 |
751 | jne frnewds_1 |
751 | jne frnewds_1 |
752 | call frnewds_2 |
752 | call frnewds_2 |
753 | pusha |
753 | pusha |
754 | call WriteSectWithRetr |
754 | call WriteSectWithRetr |
755 | popa |
755 | popa |
756 | cmp [FDC_Status],0 |
756 | cmp [FDC_Status],0 |
757 | jne fdc_status_error_7 |
757 | jne fdc_status_error_7 |
758 | jmp frnewds_3 |
758 | jmp frnewds_3 |
759 | 759 | ||
760 | frnewds_1: |
760 | frnewds_1: |
761 | call frnewds_2 |
761 | call frnewds_2 |
762 | frnewds_3: |
762 | frnewds_3: |
763 | pusha ; move save to floppy cluster |
763 | pusha ; move save to floppy cluster |
764 | add ebx,31 |
764 | add ebx,31 |
765 | mov eax,ebx |
765 | mov eax,ebx |
766 | mov esi,[esp+32+16] |
766 | mov esi,[esp+32+16] |
767 | call take_data_from_application_1 |
767 | call take_data_from_application_1 |
768 | call save_chs_sector |
768 | call save_chs_sector |
769 | cmp [FDC_Status],0 |
769 | cmp [FDC_Status],0 |
770 | jne fdc_status_error_7 |
770 | jne fdc_status_error_7 |
771 | popa |
771 | popa |
772 | mov eax,[esp+12] |
772 | mov eax,[esp+12] |
773 | cmp eax,512 |
773 | cmp eax,512 |
774 | jb flnsa_1 |
774 | jb flnsa_1 |
775 | sub eax,512 |
775 | sub eax,512 |
776 | mov [esp+12],eax |
776 | mov [esp+12],eax |
777 | mov eax,[esp+16] |
777 | mov eax,[esp+16] |
778 | add eax,512 |
778 | add eax,512 |
779 | mov [esp+16],eax |
779 | mov [esp+16],eax |
780 | jmp frnewds_1 |
780 | jmp frnewds_1 |
781 | 781 | ||
782 | frnewds_2: |
782 | frnewds_2: |
783 | add ebx,1 |
783 | add ebx,1 |
784 | mov edi,ebx ; find free cluster in FAT |
784 | mov edi,ebx ; find free cluster in FAT |
785 | shl edi,1 |
785 | shl edi,1 |
786 | add edi,0x282000 |
786 | add edi,0x282000 |
787 | mov eax,[edi] |
787 | mov eax,[edi] |
788 | and eax,4095 |
788 | and eax,4095 |
789 | jnz frnewds_2 |
789 | jnz frnewds_2 |
790 | mov [edx],bx ; save next cluster pos. to prev cl. |
790 | mov [edx],bx ; save next cluster pos. to prev cl. |
791 | mov edx,edi ; next save pos abs mem add |
791 | mov edx,edi ; next save pos abs mem add |
792 | ret |
792 | ret |
793 | 793 | ||
794 | flnsa_1: |
794 | flnsa_1: |
795 | mov [edi],word 4095 ; mark end of file - last cluster |
795 | mov [edi],word 4095 ; mark end of file - last cluster |
796 | cmp [save_root_flag],1 |
796 | cmp [save_root_flag],1 |
797 | jne flnsa_2 |
797 | jne flnsa_2 |
798 | call save_flp_root |
798 | call save_flp_root |
799 | cmp [FDC_Status],0 |
799 | cmp [FDC_Status],0 |
800 | jne fdc_status_error_7 |
800 | jne fdc_status_error_7 |
801 | flnsa_2: |
801 | flnsa_2: |
802 | call save_flp_fat |
802 | call save_flp_fat |
803 | cmp [FDC_Status],0 |
803 | cmp [FDC_Status],0 |
804 | jne fdc_status_error_7 |
804 | jne fdc_status_error_7 |
805 | frnoreadds_1: |
805 | frnoreadds_1: |
806 | pop edi esi edx ecx ebx eax |
806 | pop edi esi edx ecx ebx eax |
807 | add esp,32 |
807 | add esp,32 |
808 | mov eax,0 |
808 | mov eax,0 |
809 | mov [flp_status],0 |
809 | mov [flp_status],0 |
810 | ret |
810 | ret |
811 | 811 | ||
812 | fdc_status_error_7_1: |
812 | fdc_status_error_7_1: |
813 | cmp [FDC_Status],0 |
813 | cmp [FDC_Status],0 |
814 | je fdc_status_error_8 |
814 | je fdc_status_error_8 |
815 | fdc_status_error_7: |
815 | fdc_status_error_7: |
816 | pop edi esi edx ecx ebx eax |
816 | pop edi esi edx ecx ebx eax |
817 | add esp,32 |
817 | add esp,32 |
818 | jmp fdc_status_error_1 |
818 | jmp fdc_status_error_1 |
819 | 819 | ||
820 | save_chs_sector: |
820 | save_chs_sector: |
821 | call calculate_chs |
821 | call calculate_chs |
822 | call WriteSectWithRetr |
822 | call WriteSectWithRetr |
823 | ret |
823 | ret |
824 | 824 | ||
825 | calculate_chs: |
825 | calculate_chs: |
826 | mov bl,[FDD_Track] |
826 | mov bl,[FDD_Track] |
827 | mov [old_track],bl |
827 | mov [old_track],bl |
828 | mov ebx,18 |
828 | mov ebx,18 |
829 | xor edx,edx |
829 | xor edx,edx |
830 | div ebx |
830 | div ebx |
831 | inc edx |
831 | inc edx |
832 | mov [FDD_Sector],dl |
832 | mov [FDD_Sector],dl |
833 | xor edx,edx |
833 | xor edx,edx |
834 | mov ebx,2 |
834 | mov ebx,2 |
835 | div ebx |
835 | div ebx |
836 | mov [FDD_Track],al |
836 | mov [FDD_Track],al |
837 | mov [FDD_Head],0 |
837 | mov [FDD_Head],0 |
838 | cmp edx,0 |
838 | cmp edx,0 |
839 | je no_head_2 |
839 | je no_head_2 |
840 | inc [FDD_Head] |
840 | inc [FDD_Head] |
841 | no_head_2: |
841 | no_head_2: |
842 | mov dl,[old_track] |
842 | mov dl,[old_track] |
843 | cmp dl,[FDD_Track] |
843 | cmp dl,[FDD_Track] |
844 | je no_seek_track_1 |
844 | je no_seek_track_1 |
845 | call SeekTrack |
845 | call SeekTrack |
846 | no_seek_track_1: |
846 | no_seek_track_1: |
847 | ret |
847 | ret |
848 | 848 | ||
849 | 849 | ||
850 | get_cluster_of_a_path_flp: |
850 | get_cluster_of_a_path_flp: |
851 | ;--------------------------------------------------------- |
851 | ;--------------------------------------------------------- |
852 | ; input : EBX = pointer to a path string |
852 | ; input : EBX = pointer to a path string |
853 | ; (example: the path "/files/data/document" become |
853 | ; (example: the path "/files/data/document" become |
854 | ; "files......data.......document...0" |
854 | ; "files......data.......document...0" |
855 | ; '.' = space char |
855 | ; '.' = space char |
856 | ; '0' = char(0) (ASCII=0) !!! ) |
856 | ; '0' = char(0) (ASCII=0) !!! ) |
857 | ; output : if (CARRY=1) -> ERROR in the PATH |
857 | ; output : if (CARRY=1) -> ERROR in the PATH |
858 | ; if (CARRY=0) -> EAX=cluster |
858 | ; if (CARRY=0) -> EAX=cluster |
859 | ;--------------------------------------------------------- |
859 | ;--------------------------------------------------------- |
860 | 860 | ||
861 | push edx |
861 | push edx |
862 | mov edx,ebx |
862 | mov edx,ebx |
863 | 863 | ||
864 | search_end_of_path_flp: |
864 | search_end_of_path_flp: |
865 | cmp [save_flag],0 |
865 | cmp [save_flag],0 |
866 | jne search_end_of_path_flp_1 |
866 | jne search_end_of_path_flp_1 |
867 | cmp byte [edx],0 |
867 | cmp byte [edx],0 |
868 | je found_end_of_path_flp |
868 | je found_end_of_path_flp |
869 | jmp search_end_of_path_flp_2 |
869 | jmp search_end_of_path_flp_2 |
870 | search_end_of_path_flp_1: |
870 | search_end_of_path_flp_1: |
871 | cmp byte [edx+12],0 |
871 | cmp byte [edx+12],0 |
872 | je found_end_of_path_flp |
872 | je found_end_of_path_flp |
873 | search_end_of_path_flp_2: |
873 | search_end_of_path_flp_2: |
874 | inc edx ; '/' |
874 | inc edx ; '/' |
875 | call analyze_directory_flp |
875 | call analyze_directory_flp |
876 | jc directory_not_found_flp |
876 | jc directory_not_found_flp |
877 | 877 | ||
878 | mov eax,[ebx+20-2] ; read the HIGH 16bit cluster field |
878 | mov eax,[ebx+20-2] ; read the HIGH 16bit cluster field |
879 | mov ax,[ebx+26] ; read the LOW 16bit cluster field |
879 | mov ax,[ebx+26] ; read the LOW 16bit cluster field |
880 | and eax,0xfff ;[fatMASK] |
880 | and eax,0xfff ;[fatMASK] |
881 | add edx,11 ; 8+3 (name+extension) |
881 | add edx,11 ; 8+3 (name+extension) |
882 | jmp search_end_of_path_flp |
882 | jmp search_end_of_path_flp |
883 | 883 | ||
884 | found_end_of_path_flp: |
884 | found_end_of_path_flp: |
885 | inc edx |
885 | inc edx |
886 | mov [pointer_file_name_flp],edx |
886 | mov [pointer_file_name_flp],edx |
887 | pop edx |
887 | pop edx |
888 | clc ; no errors |
888 | clc ; no errors |
889 | ret |
889 | ret |
890 | 890 | ||
891 | directory_not_found_flp: |
891 | directory_not_found_flp: |
892 | pop edx |
892 | pop edx |
893 | stc ; errors occour |
893 | stc ; errors occour |
894 | ret |
894 | ret |
895 | 895 | ||
896 | analyze_directory_flp: |
896 | analyze_directory_flp: |
897 | ;-------------------------------- |
897 | ;-------------------------------- |
898 | ; input : EAX = first cluster of the directory |
898 | ; input : EAX = first cluster of the directory |
899 | ; EBX = pointer to filename |
899 | ; EBX = pointer to filename |
900 | ; output : IF CARRY=0 EAX = sector where th file is found |
900 | ; output : IF CARRY=0 EAX = sector where th file is found |
901 | ; EBX = pointer in buffer |
901 | ; EBX = pointer in buffer |
902 | ; [buffer .. buffer+511] |
902 | ; [buffer .. buffer+511] |
903 | ; ECX,EDX,EDI,EDI not changed |
903 | ; ECX,EDX,EDI,EDI not changed |
904 | ; IF CARRY=1 |
904 | ; IF CARRY=1 |
905 | ;-------------------------------- |
905 | ;-------------------------------- |
906 | push ebx ;[esp+16] |
906 | push ebx ;[esp+16] |
907 | push ecx |
907 | push ecx |
908 | push edx |
908 | push edx |
909 | push esi |
909 | push esi |
910 | push edi |
910 | push edi |
911 | 911 | ||
912 | 912 | ||
913 | adr56_flp: |
913 | adr56_flp: |
914 | mov [clust_tmp_flp],eax |
914 | mov [clust_tmp_flp],eax |
915 | add eax,31 |
915 | add eax,31 |
916 | pusha |
916 | pusha |
917 | call read_chs_sector |
917 | call read_chs_sector |
918 | popa |
918 | popa |
919 | cmp [FDC_Status],0 |
919 | cmp [FDC_Status],0 |
920 | jne not_found_file_analyze_flp |
920 | jne not_found_file_analyze_flp |
921 | 921 | ||
922 | mov ecx,512/32 |
922 | mov ecx,512/32 |
923 | mov ebx,0xD000 |
923 | mov ebx,0xD000 |
924 | 924 | ||
925 | adr1_analyze_flp: |
925 | adr1_analyze_flp: |
926 | mov esi,edx ;[esp+16] |
926 | mov esi,edx ;[esp+16] |
927 | mov edi,ebx |
927 | mov edi,ebx |
928 | cld |
928 | cld |
929 | push ecx |
929 | push ecx |
930 | mov ecx,11 |
930 | mov ecx,11 |
931 | rep cmpsb |
931 | rep cmpsb |
932 | pop ecx |
932 | pop ecx |
933 | je found_file_analyze_flp |
933 | je found_file_analyze_flp |
934 | 934 | ||
935 | add ebx,32 |
935 | add ebx,32 |
936 | loop adr1_analyze_flp |
936 | loop adr1_analyze_flp |
937 | 937 | ||
938 | mov eax,[clust_tmp_flp] |
938 | mov eax,[clust_tmp_flp] |
939 | shl eax,1 ;find next cluster from FAT |
939 | shl eax,1 ;find next cluster from FAT |
940 | add eax,0x282000 |
940 | add eax,0x282000 |
941 | mov eax,[eax] |
941 | mov eax,[eax] |
942 | and eax,4095 |
942 | and eax,4095 |
943 | cmp eax,0x0ff8 |
943 | cmp eax,0x0ff8 |
944 | jb adr56_flp |
944 | jb adr56_flp |
945 | not_found_file_analyze_flp: |
945 | not_found_file_analyze_flp: |
946 | pop edi |
946 | pop edi |
947 | pop esi |
947 | pop esi |
948 | pop edx |
948 | pop edx |
949 | pop ecx |
949 | pop ecx |
950 | add esp,4 |
950 | add esp,4 |
951 | stc ;file not found |
951 | stc ;file not found |
952 | ret |
952 | ret |
953 | 953 | ||
954 | found_file_analyze_flp: |
954 | found_file_analyze_flp: |
955 | pop edi |
955 | pop edi |
956 | pop esi |
956 | pop esi |
957 | pop edx |
957 | pop edx |
958 | pop ecx |
958 | pop ecx |
959 | add esp,4 |
959 | add esp,4 |
960 | clc ;file found |
960 | clc ;file found |
961 | ret |
961 | ret |
962 | 962 | ||
963 | 963 | ||
964 | analyze_directory_to_write_flp: |
964 | analyze_directory_to_write_flp: |
965 | ;-------------------------------- |
965 | ;-------------------------------- |
966 | ; input : EAX = first cluster of the directory |
966 | ; input : EAX = first cluster of the directory |
967 | ; output : IF CARRY=0 EAX = sector where the file is found |
967 | ; output : IF CARRY=0 EAX = sector where the file is found |
968 | ; EBX = pointer in buffer |
968 | ; EBX = pointer in buffer |
969 | ; [buffer .. buffer+511] |
969 | ; [buffer .. buffer+511] |
970 | ; ECX,EDX,EDI,EDI not changed |
970 | ; ECX,EDX,EDI,EDI not changed |
971 | ; IF CARRY=1 |
971 | ; IF CARRY=1 |
972 | ;-------------------------------- |
972 | ;-------------------------------- |
973 | 973 | ||
974 | push ecx |
974 | push ecx |
975 | push edx |
975 | push edx |
976 | push esi |
976 | push esi |
977 | 977 | ||
978 | adr561: |
978 | adr561: |
979 | mov [clust_tmp_flp],eax |
979 | mov [clust_tmp_flp],eax |
980 | add eax,31 |
980 | add eax,31 |
981 | pusha |
981 | pusha |
982 | call read_chs_sector |
982 | call read_chs_sector |
983 | popa |
983 | popa |
984 | cmp [FDC_Status],0 |
984 | cmp [FDC_Status],0 |
985 | jne error_found_file_analyze1 |
985 | jne error_found_file_analyze1 |
986 | 986 | ||
987 | mov ecx,512/32 |
987 | mov ecx,512/32 |
988 | mov ebx,0xD000 |
988 | mov ebx,0xD000 |
989 | 989 | ||
990 | adr1_analyze1: |
990 | adr1_analyze1: |
991 | cmp byte [ebx],0x00 |
991 | cmp byte [ebx],0x00 |
992 | je found_file_analyze1 |
992 | je found_file_analyze1 |
993 | cmp byte [ebx],0xe5 |
993 | cmp byte [ebx],0xe5 |
994 | je found_file_analyze1 |
994 | je found_file_analyze1 |
995 | 995 | ||
996 | avanti: |
996 | avanti: |
997 | add ebx,32 |
997 | add ebx,32 |
998 | loop adr1_analyze1 |
998 | loop adr1_analyze1 |
999 | 999 | ||
1000 | mov eax,[clust_tmp_flp] |
1000 | mov eax,[clust_tmp_flp] |
1001 | shl eax,1 ;find next cluster from FAT |
1001 | shl eax,1 ;find next cluster from FAT |
1002 | add eax,0x282000 |
1002 | add eax,0x282000 |
1003 | mov eax,[eax] |
1003 | mov eax,[eax] |
1004 | and eax,4095 |
1004 | and eax,4095 |
1005 | cmp eax,0x0ff8 |
1005 | cmp eax,0x0ff8 |
1006 | jb adr561 |
1006 | jb adr561 |
1007 | 1007 | ||
1008 | call get_free_FAT ;this block of code add a new cluster |
1008 | call get_free_FAT ;this block of code add a new cluster |
1009 | ;for the directory because the directory |
1009 | ;for the directory because the directory |
1010 | ;is full |
1010 | ;is full |
1011 | 1011 | ||
1012 | mov [edi],word 0x0fff |
1012 | mov [edi],word 0x0fff |
1013 | 1013 | ||
1014 | mov eax,[clust_tmp_flp] |
1014 | mov eax,[clust_tmp_flp] |
1015 | shl eax,1 ;find next cluster from FAT |
1015 | shl eax,1 ;find next cluster from FAT |
1016 | add eax,0x282000 |
1016 | add eax,0x282000 |
1017 | sub edi,0x282000 |
1017 | sub edi,0x282000 |
1018 | mov [eax],di |
1018 | mov [eax],di |
1019 | 1019 | ||
1020 | pusha |
1020 | pusha |
1021 | mov ecx,512/4 |
1021 | mov ecx,512/4 |
1022 | xor eax,eax |
1022 | xor eax,eax |
1023 | mov edi,0xD000 |
1023 | mov edi,0xD000 |
1024 | cld |
1024 | cld |
1025 | rep stosd |
1025 | rep stosd |
1026 | popa |
1026 | popa |
1027 | 1027 | ||
1028 | mov eax,edi |
1028 | mov eax,edi |
1029 | add eax,31 |
1029 | add eax,31 |
1030 | pusha |
1030 | pusha |
1031 | call save_chs_sector |
1031 | call save_chs_sector |
1032 | popa |
1032 | popa |
1033 | cmp [FDC_Status],0 |
1033 | cmp [FDC_Status],0 |
1034 | jne error_found_file_analyze1 |
1034 | jne error_found_file_analyze1 |
1035 | mov ebx,0xD000 |
1035 | mov ebx,0xD000 |
1036 | 1036 | ||
1037 | found_file_analyze1: |
1037 | found_file_analyze1: |
1038 | 1038 | ||
1039 | pop esi |
1039 | pop esi |
1040 | pop edx |
1040 | pop edx |
1041 | pop ecx |
1041 | pop ecx |
1042 | clc ;file found |
1042 | clc ;file found |
1043 | ret |
1043 | ret |
1044 | 1044 | ||
1045 | error_found_file_analyze1: |
1045 | error_found_file_analyze1: |
1046 | pop esi |
1046 | pop esi |
1047 | pop edx |
1047 | pop edx |
1048 | pop ecx |
1048 | pop ecx |
1049 | stc |
1049 | stc |
1050 | ret |
1050 | ret |
1051 | 1051 | ||
1052 | get_free_FAT_flp: |
1052 | get_free_FAT_flp: |
1053 | ;------------------------------------------ |
1053 | ;------------------------------------------ |
1054 | ; input : EAX = # cluster for start the searching |
1054 | ; input : EAX = # cluster for start the searching |
1055 | ; output : EAX = # first cluster found free |
1055 | ; output : EAX = # first cluster found free |
1056 | ;------------------------------------------- |
1056 | ;------------------------------------------- |
1057 | push ebx |
1057 | push ebx |
1058 | 1058 | ||
1059 | mov ebx,1 |
1059 | mov ebx,1 |
1060 | check_new_flp: |
1060 | check_new_flp: |
1061 | add ebx,1 |
1061 | add ebx,1 |
1062 | mov edi,ebx ; find free cluster in FAT |
1062 | mov edi,ebx ; find free cluster in FAT |
1063 | shl edi,1 |
1063 | shl edi,1 |
1064 | add edi,0x282000 |
1064 | add edi,0x282000 |
1065 | mov eax,[edi] |
1065 | mov eax,[edi] |
1066 | and eax,4095 |
1066 | and eax,4095 |
1067 | cmp eax,0x0 |
1067 | cmp eax,0x0 |
1068 | jnz check_new_flp |
1068 | jnz check_new_flp |
1069 | 1069 | ||
1070 | pop ebx |
1070 | pop ebx |
1071 | ret |
1071 | ret |
1072 | 1072 | ||
1073 | ; \begin{diamond} |
1073 | ; \begin{diamond} |
1074 | fat_find_lfn: |
1074 | fat_find_lfn: |
1075 | ; in: esi->name |
1075 | ; in: esi->name |
1076 | ; [esp+4] = next |
1076 | ; [esp+4] = next |
1077 | ; [esp+8] = first |
1077 | ; [esp+8] = first |
1078 | ; [esp+C]... - possibly parameters for first and next |
1078 | ; [esp+C]... - possibly parameters for first and next |
1079 | ; out: CF=1 - file not found |
1079 | ; out: CF=1 - file not found |
1080 | ; else CF=0, esi->next name component, edi->direntry |
1080 | ; else CF=0, esi->next name component, edi->direntry |
1081 | pusha |
1081 | pusha |
1082 | lea eax, [esp+0Ch+20h] |
1082 | lea eax, [esp+0Ch+20h] |
1083 | call dword [eax-4] |
1083 | call dword [eax-4] |
1084 | jc .reterr |
1084 | jc .reterr |
1085 | sub esp, 262*2 ; reserve place for LFN |
1085 | sub esp, 262*2 ; reserve place for LFN |
1086 | mov ebp, esp |
1086 | mov ebp, esp |
1087 | push 0 ; for fat_get_name: read ASCII name |
1087 | push 0 ; for fat_get_name: read ASCII name |
1088 | .l1: |
1088 | .l1: |
1089 | call fat_get_name |
1089 | call fat_get_name |
1090 | jc .l2 |
1090 | jc .l2 |
1091 | call fat_compare_name |
1091 | call fat_compare_name |
1092 | jz .found |
1092 | jz .found |
1093 | .l2: |
1093 | .l2: |
1094 | lea eax, [esp+0Ch+20h+262*2+4] |
1094 | lea eax, [esp+0Ch+20h+262*2+4] |
1095 | call dword [eax-8] |
1095 | call dword [eax-8] |
1096 | jnc .l1 |
1096 | jnc .l1 |
1097 | add esp, 262*2+4 |
1097 | add esp, 262*2+4 |
1098 | .reterr: |
1098 | .reterr: |
1099 | stc |
1099 | stc |
1100 | popa |
1100 | popa |
1101 | ret |
1101 | ret |
1102 | .found: |
1102 | .found: |
1103 | add esp, 262*2+4 |
1103 | add esp, 262*2+4 |
1104 | ; if this is LFN entry, advance to true entry |
1104 | ; if this is LFN entry, advance to true entry |
1105 | cmp byte [edi+11], 0xF |
1105 | cmp byte [edi+11], 0xF |
1106 | jnz @f |
1106 | jnz @f |
1107 | lea eax, [esp+0Ch+20h] |
1107 | lea eax, [esp+0Ch+20h] |
1108 | call dword [eax-8] |
1108 | call dword [eax-8] |
1109 | jc .reterr |
1109 | jc .reterr |
1110 | @@: |
1110 | @@: |
1111 | add esp, 8 ; CF=0 |
1111 | add esp, 8 ; CF=0 |
1112 | push esi |
1112 | push esi |
1113 | push edi |
1113 | push edi |
1114 | popa |
1114 | popa |
1115 | ret |
1115 | ret |
- | 1116 | ||
- | 1117 | uglobal |
|
- | 1118 | ; this is for delete support |
|
- | 1119 | fd_prev_sector dd ? |
|
- | 1120 | fd_prev_prev_sector dd ? |
|
- | 1121 | endg |
|
1116 | 1122 | ||
1117 | flp_root_next: |
1123 | flp_root_next: |
1118 | cmp edi, 0xD200-0x20 |
1124 | cmp edi, 0xD200-0x20 |
1119 | jae @f |
1125 | jae @f |
1120 | add edi, 0x20 |
1126 | add edi, 0x20 |
1121 | ret ; CF=0 |
1127 | ret ; CF=0 |
1122 | @@: |
1128 | @@: |
1123 | ; read next sector |
1129 | ; read next sector |
1124 | inc dword [eax] |
1130 | inc dword [eax] |
1125 | cmp dword [eax], 14 |
1131 | cmp dword [eax], 14 |
1126 | jae flp_root_first.readerr |
1132 | jae flp_root_first.readerr |
- | 1133 | push [fd_prev_sector] |
|
- | 1134 | pop [fd_prev_prev_sector] |
|
- | 1135 | push eax |
|
- | 1136 | mov eax, [eax] |
|
- | 1137 | add eax, 19-1 |
|
- | 1138 | mov [fd_prev_sector], eax |
|
- | 1139 | pop eax |
|
1127 | flp_root_first: |
1140 | flp_root_first: |
1128 | mov eax, [eax] |
1141 | mov eax, [eax] |
1129 | pusha |
1142 | pusha |
1130 | add eax, 19 |
1143 | add eax, 19 |
1131 | call read_chs_sector |
1144 | call read_chs_sector |
1132 | popa |
1145 | popa |
1133 | cmp [FDC_Status], 0 |
1146 | cmp [FDC_Status], 0 |
1134 | jnz .readerr |
1147 | jnz .readerr |
1135 | mov edi, 0xD000 |
1148 | mov edi, 0xD000 |
1136 | ret ; CF=0 |
1149 | ret ; CF=0 |
1137 | .readerr: |
1150 | .readerr: |
1138 | stc |
1151 | stc |
1139 | ret |
1152 | ret |
1140 | 1153 | ||
1141 | flp_rootmem_first: |
1154 | flp_rootmem_first: |
1142 | mov edi, 0x8000 |
1155 | mov edi, 0x8000 |
1143 | clc |
1156 | clc |
1144 | ret |
1157 | ret |
1145 | flp_rootmem_next: |
1158 | flp_rootmem_next: |
1146 | add edi, 0x20 |
1159 | add edi, 0x20 |
1147 | cmp edi, 0x8000+14*0x200 |
1160 | cmp edi, 0x8000+14*0x200 |
1148 | cmc |
1161 | cmc |
1149 | flp_rootmem_next_write: |
1162 | flp_rootmem_next_write: |
1150 | flp_rootmem_begin_write: |
1163 | flp_rootmem_begin_write: |
1151 | flp_rootmem_end_write: |
1164 | flp_rootmem_end_write: |
1152 | ret |
1165 | ret |
1153 | flp_rootmem_extend_dir: |
1166 | flp_rootmem_extend_dir: |
1154 | stc |
1167 | stc |
1155 | ret |
1168 | ret |
1156 | 1169 | ||
1157 | flp_notroot_next: |
1170 | flp_notroot_next: |
1158 | cmp edi, 0xD200-0x20 |
1171 | cmp edi, 0xD200-0x20 |
1159 | jae flp_notroot_next_sector |
1172 | jae flp_notroot_next_sector |
1160 | add edi, 0x20 |
1173 | add edi, 0x20 |
1161 | ret ; CF=0 |
1174 | ret ; CF=0 |
1162 | flp_notroot_next_sector: |
1175 | flp_notroot_next_sector: |
1163 | push ecx |
1176 | push ecx |
1164 | mov ecx, [eax] |
1177 | mov ecx, [eax] |
- | 1178 | push [fd_prev_sector] |
|
- | 1179 | pop [fd_prev_prev_sector] |
|
- | 1180 | add ecx, 31 |
|
- | 1181 | mov [fd_prev_sector], ecx |
|
1165 | mov ecx, [ecx*2+0x282000] |
1182 | mov ecx, [(ecx-31)*2+0x282000] |
1166 | and ecx, 0xFFF |
1183 | and ecx, 0xFFF |
1167 | cmp ecx, 2849 |
1184 | cmp ecx, 2849 |
1168 | jae flp_notroot_first.err2 |
1185 | jae flp_notroot_first.err2 |
1169 | mov [eax], ecx |
1186 | mov [eax], ecx |
1170 | pop ecx |
1187 | pop ecx |
1171 | flp_notroot_first: |
1188 | flp_notroot_first: |
1172 | mov eax, [eax] |
1189 | mov eax, [eax] |
1173 | cmp eax, 2 |
1190 | cmp eax, 2 |
1174 | jb .err |
1191 | jb .err |
1175 | cmp eax, 2849 |
1192 | cmp eax, 2849 |
1176 | jae .err |
1193 | jae .err |
1177 | pusha |
1194 | pusha |
1178 | add eax, 31 |
1195 | add eax, 31 |
1179 | call read_chs_sector |
1196 | call read_chs_sector |
1180 | popa |
1197 | popa |
1181 | mov edi, 0xD000 |
1198 | mov edi, 0xD000 |
1182 | cmp [FDC_Status], 0 |
1199 | cmp [FDC_Status], 0 |
1183 | jnz .err |
1200 | jnz .err |
1184 | ret ; CF=0 |
1201 | ret ; CF=0 |
1185 | .err2: |
1202 | .err2: |
1186 | pop ecx |
1203 | pop ecx |
1187 | .err: |
1204 | .err: |
1188 | stc |
1205 | stc |
1189 | ret |
1206 | ret |
1190 | flp_notroot_begin_write: |
1207 | flp_notroot_begin_write: |
1191 | pusha |
1208 | pusha |
1192 | mov eax, [eax] |
1209 | mov eax, [eax] |
1193 | add eax, 31 |
1210 | add eax, 31 |
1194 | call read_chs_sector |
1211 | call read_chs_sector |
1195 | popa |
1212 | popa |
1196 | ret |
1213 | ret |
1197 | flp_notroot_end_write: |
1214 | flp_notroot_end_write: |
1198 | pusha |
1215 | pusha |
1199 | mov eax, [eax] |
1216 | mov eax, [eax] |
1200 | add eax, 31 |
1217 | add eax, 31 |
1201 | call save_chs_sector |
1218 | call save_chs_sector |
1202 | popa |
1219 | popa |
1203 | ret |
1220 | ret |
1204 | flp_notroot_next_write: |
1221 | flp_notroot_next_write: |
1205 | cmp edi, 0xD200 |
1222 | cmp edi, 0xD200 |
1206 | jae @f |
1223 | jae @f |
1207 | ret |
1224 | ret |
1208 | @@: |
1225 | @@: |
1209 | call flp_notroot_end_write |
1226 | call flp_notroot_end_write |
1210 | jmp flp_notroot_next_sector |
1227 | jmp flp_notroot_next_sector |
1211 | flp_notroot_extend_dir: |
1228 | flp_notroot_extend_dir: |
1212 | ; find free cluster in FAT |
1229 | ; find free cluster in FAT |
1213 | pusha |
1230 | pusha |
1214 | xor eax, eax |
1231 | xor eax, eax |
1215 | mov edi, 0x282000 |
1232 | mov edi, 0x282000 |
1216 | mov ecx, 2849 |
1233 | mov ecx, 2849 |
1217 | repnz scasw |
1234 | repnz scasw |
1218 | jnz .notfound |
1235 | jnz .notfound |
1219 | mov word [edi-2], 0xFFF ; mark as last cluster |
1236 | mov word [edi-2], 0xFFF ; mark as last cluster |
1220 | sub edi, 0x282000 |
1237 | sub edi, 0x282000 |
1221 | shr edi, 1 |
1238 | shr edi, 1 |
1222 | dec edi |
1239 | dec edi |
1223 | mov eax, [esp+28] |
1240 | mov eax, [esp+28] |
1224 | mov ecx, [eax] |
1241 | mov ecx, [eax] |
1225 | mov [0x282000+ecx*2], di |
1242 | mov [0x282000+ecx*2], di |
1226 | mov [eax], edi |
1243 | mov [eax], edi |
1227 | xor eax, eax |
1244 | xor eax, eax |
1228 | mov edi, 0xD000 |
1245 | mov edi, 0xD000 |
1229 | mov ecx, 128 |
1246 | mov ecx, 128 |
1230 | rep stosd |
1247 | rep stosd |
1231 | popa |
1248 | popa |
1232 | call flp_notroot_end_write |
1249 | call flp_notroot_end_write |
1233 | mov edi, 0xD000 |
1250 | mov edi, 0xD000 |
1234 | clc |
1251 | clc |
1235 | ret |
1252 | ret |
1236 | .notfound: |
1253 | .notfound: |
1237 | popa |
1254 | popa |
1238 | stc |
1255 | stc |
1239 | ret |
1256 | ret |
1240 | 1257 | ||
1241 | fd_find_lfn: |
1258 | fd_find_lfn: |
1242 | ; in: esi->name |
1259 | ; in: esi->name |
1243 | ; out: CF=1 - file not found |
1260 | ; out: CF=1 - file not found |
1244 | ; else CF=0 and edi->direntry, eax=directory cluster (0 for root) |
1261 | ; else CF=0 and edi->direntry, eax=directory cluster (0 for root) |
1245 | push esi edi |
1262 | push esi edi |
1246 | push 0 |
1263 | push 0 |
1247 | push flp_root_first |
1264 | push flp_root_first |
1248 | push flp_root_next |
1265 | push flp_root_next |
1249 | .loop: |
1266 | .loop: |
1250 | call fat_find_lfn |
1267 | call fat_find_lfn |
1251 | jc .notfound |
1268 | jc .notfound |
1252 | cmp byte [esi], 0 |
1269 | cmp byte [esi], 0 |
1253 | jz .found |
1270 | jz .found |
1254 | test byte [edi+11], 10h |
1271 | test byte [edi+11], 10h |
1255 | jz .notfound |
1272 | jz .notfound |
1256 | movzx eax, word [edi+26] ; cluster |
1273 | movzx eax, word [edi+26] ; cluster |
1257 | mov [esp+8], eax |
1274 | mov [esp+8], eax |
1258 | mov dword [esp+4], flp_notroot_first |
1275 | mov dword [esp+4], flp_notroot_first |
1259 | mov dword [esp], flp_notroot_next |
1276 | mov dword [esp], flp_notroot_next |
1260 | jmp .loop |
1277 | jmp .loop |
1261 | .notfound: |
1278 | .notfound: |
1262 | add esp, 12 |
1279 | add esp, 12 |
1263 | pop edi esi |
1280 | pop edi esi |
1264 | stc |
1281 | stc |
1265 | ret |
1282 | ret |
1266 | .found: |
1283 | .found: |
1267 | mov eax, [esp+8] |
1284 | mov eax, [esp+8] |
1268 | add eax, 31 |
1285 | add eax, 31 |
1269 | cmp dword [esp], flp_root_next |
1286 | cmp dword [esp], flp_root_next |
1270 | jnz @f |
1287 | jnz @f |
1271 | add eax, -31+19 |
1288 | add eax, -31+19 |
1272 | @@: |
1289 | @@: |
1273 | add esp, 16 ; CF=0 |
1290 | add esp, 16 ; CF=0 |
1274 | pop esi |
1291 | pop esi |
1275 | ret |
1292 | ret |
1276 | 1293 | ||
1277 | ;---------------------------------------------------------------- |
1294 | ;---------------------------------------------------------------- |
1278 | ; |
1295 | ; |
1279 | ; fs_FloppyRead - LFN variant for reading floppy |
1296 | ; fs_FloppyRead - LFN variant for reading floppy |
1280 | ; |
1297 | ; |
1281 | ; esi points to filename |
1298 | ; esi points to filename |
1282 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1299 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1283 | ; may be ebx=0 - start from first byte |
1300 | ; may be ebx=0 - start from first byte |
1284 | ; ecx number of bytes to read, 0+ |
1301 | ; ecx number of bytes to read, 0+ |
1285 | ; edx mem location to return data |
1302 | ; edx mem location to return data |
1286 | ; |
1303 | ; |
1287 | ; ret ebx = bytes read or 0xffffffff file not found |
1304 | ; ret ebx = bytes read or 0xffffffff file not found |
1288 | ; eax = 0 ok read or other = errormsg |
1305 | ; eax = 0 ok read or other = errormsg |
1289 | ; |
1306 | ; |
1290 | ;-------------------------------------------------------------- |
1307 | ;-------------------------------------------------------------- |
1291 | fs_FloppyRead: |
1308 | fs_FloppyRead: |
1292 | call read_flp_fat |
1309 | call read_flp_fat |
1293 | cmp byte [esi], 0 |
1310 | cmp byte [esi], 0 |
1294 | jnz @f |
1311 | jnz @f |
1295 | or ebx, -1 |
1312 | or ebx, -1 |
1296 | mov eax, 10 ; access denied |
1313 | mov eax, 10 ; access denied |
1297 | ret |
1314 | ret |
1298 | @@: |
1315 | @@: |
1299 | push edi |
1316 | push edi |
1300 | call fd_find_lfn |
1317 | call fd_find_lfn |
1301 | jnc .found |
1318 | jnc .found |
1302 | pop edi |
1319 | pop edi |
1303 | or ebx, -1 |
1320 | or ebx, -1 |
1304 | mov eax, 5 ; file not found |
1321 | mov eax, 5 ; file not found |
1305 | ret |
1322 | ret |
1306 | .found: |
1323 | .found: |
1307 | test ebx, ebx |
1324 | test ebx, ebx |
1308 | jz .l1 |
1325 | jz .l1 |
1309 | cmp dword [ebx+4], 0 |
1326 | cmp dword [ebx+4], 0 |
1310 | jz @f |
1327 | jz @f |
1311 | xor ebx, ebx |
1328 | xor ebx, ebx |
1312 | .reteof: |
1329 | .reteof: |
1313 | mov eax, 6 ; EOF |
1330 | mov eax, 6 ; EOF |
1314 | pop edi |
1331 | pop edi |
1315 | ret |
1332 | ret |
1316 | @@: |
1333 | @@: |
1317 | mov ebx, [ebx] |
1334 | mov ebx, [ebx] |
1318 | .l1: |
1335 | .l1: |
1319 | push ecx edx |
1336 | push ecx edx |
1320 | push 0 |
1337 | push 0 |
1321 | mov eax, [edi+28] |
1338 | mov eax, [edi+28] |
1322 | sub eax, ebx |
1339 | sub eax, ebx |
1323 | jb .eof |
1340 | jb .eof |
1324 | cmp eax, ecx |
1341 | cmp eax, ecx |
1325 | jae @f |
1342 | jae @f |
1326 | mov ecx, eax |
1343 | mov ecx, eax |
1327 | mov byte [esp], 6 ; EOF |
1344 | mov byte [esp], 6 ; EOF |
1328 | @@: |
1345 | @@: |
1329 | movzx edi, word [edi+26] |
1346 | movzx edi, word [edi+26] |
1330 | .new: |
1347 | .new: |
1331 | jecxz .done |
1348 | jecxz .done |
1332 | test edi, edi |
1349 | test edi, edi |
1333 | jz .eof |
1350 | jz .eof |
1334 | cmp edi, 0xFF8 |
1351 | cmp edi, 0xFF8 |
1335 | jae .eof |
1352 | jae .eof |
1336 | sub ebx, 512 |
1353 | sub ebx, 512 |
1337 | jae .skip |
1354 | jae .skip |
1338 | lea eax, [edi+31] |
1355 | lea eax, [edi+31] |
1339 | pusha |
1356 | pusha |
1340 | call read_chs_sector |
1357 | call read_chs_sector |
1341 | popa |
1358 | popa |
1342 | cmp [FDC_Status], 0 |
1359 | cmp [FDC_Status], 0 |
1343 | jnz .err |
1360 | jnz .err |
1344 | lea eax, [0xD000+ebx+512] |
1361 | lea eax, [0xD000+ebx+512] |
1345 | neg ebx |
1362 | neg ebx |
1346 | push ecx |
1363 | push ecx |
1347 | cmp ecx, ebx |
1364 | cmp ecx, ebx |
1348 | jbe @f |
1365 | jbe @f |
1349 | mov ecx, ebx |
1366 | mov ecx, ebx |
1350 | @@: |
1367 | @@: |
1351 | mov ebx, edx |
1368 | mov ebx, edx |
1352 | call memmove |
1369 | call memmove |
1353 | add edx, ecx |
1370 | add edx, ecx |
1354 | sub [esp], ecx |
1371 | sub [esp], ecx |
1355 | pop ecx |
1372 | pop ecx |
1356 | xor ebx, ebx |
1373 | xor ebx, ebx |
1357 | .skip: |
1374 | .skip: |
1358 | movzx edi, word [edi*2+0x282000] |
1375 | movzx edi, word [edi*2+0x282000] |
1359 | jmp .new |
1376 | jmp .new |
1360 | .done: |
1377 | .done: |
1361 | mov ebx, edx |
1378 | mov ebx, edx |
1362 | pop eax edx ecx edi |
1379 | pop eax edx ecx edi |
1363 | sub ebx, edx |
1380 | sub ebx, edx |
1364 | ret |
1381 | ret |
1365 | .eof: |
1382 | .eof: |
1366 | mov ebx, edx |
1383 | mov ebx, edx |
1367 | pop eax edx ecx |
1384 | pop eax edx ecx |
1368 | jmp .reteof |
1385 | jmp .reteof |
1369 | .err: |
1386 | .err: |
1370 | mov ebx, edx |
1387 | mov ebx, edx |
1371 | pop eax edx ecx edi |
1388 | pop eax edx ecx edi |
1372 | sub ebx, edx |
1389 | sub ebx, edx |
1373 | mov al, 11 |
1390 | mov al, 11 |
1374 | ret |
1391 | ret |
1375 | 1392 | ||
1376 | ;---------------------------------------------------------------- |
1393 | ;---------------------------------------------------------------- |
1377 | ; |
1394 | ; |
1378 | ; fs_FloppyReadFolder - LFN variant for reading floppy folders |
1395 | ; fs_FloppyReadFolder - LFN variant for reading floppy folders |
1379 | ; |
1396 | ; |
1380 | ; esi points to filename |
1397 | ; esi points to filename |
1381 | ; ebx pointer to structure: 32-bit number = first wanted block, 0+ |
1398 | ; ebx pointer to structure: 32-bit number = first wanted block, 0+ |
1382 | ; & flags (bitfields) |
1399 | ; & flags (bitfields) |
1383 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
1400 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
1384 | ; ecx number of blocks to read, 0+ |
1401 | ; ecx number of blocks to read, 0+ |
1385 | ; edx mem location to return data |
1402 | ; edx mem location to return data |
1386 | ; |
1403 | ; |
1387 | ; ret ebx = blocks read or 0xffffffff folder not found |
1404 | ; ret ebx = blocks read or 0xffffffff folder not found |
1388 | ; eax = 0 ok read or other = errormsg |
1405 | ; eax = 0 ok read or other = errormsg |
1389 | ; |
1406 | ; |
1390 | ;-------------------------------------------------------------- |
1407 | ;-------------------------------------------------------------- |
1391 | fs_FloppyReadFolder: |
1408 | fs_FloppyReadFolder: |
1392 | call read_flp_fat |
1409 | call read_flp_fat |
1393 | push edi |
1410 | push edi |
1394 | cmp byte [esi], 0 |
1411 | cmp byte [esi], 0 |
1395 | jz .root |
1412 | jz .root |
1396 | call fd_find_lfn |
1413 | call fd_find_lfn |
1397 | jnc .found |
1414 | jnc .found |
1398 | pop edi |
1415 | pop edi |
1399 | or ebx, -1 |
1416 | or ebx, -1 |
1400 | mov eax, ERROR_FILE_NOT_FOUND |
1417 | mov eax, ERROR_FILE_NOT_FOUND |
1401 | ret |
1418 | ret |
1402 | .found: |
1419 | .found: |
1403 | test byte [edi+11], 0x10 ; do not allow read files |
1420 | test byte [edi+11], 0x10 ; do not allow read files |
1404 | jnz .found_dir |
1421 | jnz .found_dir |
1405 | pop edi |
1422 | pop edi |
1406 | or ebx, -1 |
1423 | or ebx, -1 |
1407 | mov eax, ERROR_ACCESS_DENIED |
1424 | mov eax, ERROR_ACCESS_DENIED |
1408 | ret |
1425 | ret |
1409 | .found_dir: |
1426 | .found_dir: |
1410 | movzx eax, word [edi+26] |
1427 | movzx eax, word [edi+26] |
1411 | add eax, 31 |
1428 | add eax, 31 |
1412 | push 0 |
1429 | push 0 |
1413 | jmp .doit |
1430 | jmp .doit |
1414 | .root: |
1431 | .root: |
1415 | mov eax, 19 |
1432 | mov eax, 19 |
1416 | push 14 |
1433 | push 14 |
1417 | .doit: |
1434 | .doit: |
1418 | push ecx ebp |
1435 | push ecx ebp |
1419 | sub esp, 262*2 ; reserve space for LFN |
1436 | sub esp, 262*2 ; reserve space for LFN |
1420 | mov ebp, esp |
1437 | mov ebp, esp |
1421 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE names |
1438 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE names |
1422 | mov ebx, [ebx] |
1439 | mov ebx, [ebx] |
1423 | ; init header |
1440 | ; init header |
1424 | push eax ecx |
1441 | push eax ecx |
1425 | mov edi, edx |
1442 | mov edi, edx |
1426 | mov ecx, 32/4 |
1443 | mov ecx, 32/4 |
1427 | xor eax, eax |
1444 | xor eax, eax |
1428 | rep stosd |
1445 | rep stosd |
1429 | pop ecx eax |
1446 | pop ecx eax |
1430 | mov byte [edx], 1 ; version |
1447 | mov byte [edx], 1 ; version |
1431 | mov esi, edi ; esi points to BDFE |
1448 | mov esi, edi ; esi points to BDFE |
1432 | .main_loop: |
1449 | .main_loop: |
1433 | pusha |
1450 | pusha |
1434 | call read_chs_sector |
1451 | call read_chs_sector |
1435 | popa |
1452 | popa |
1436 | cmp [FDC_Status], 0 |
1453 | cmp [FDC_Status], 0 |
1437 | jnz .error |
1454 | jnz .error |
1438 | mov edi, 0xD000 |
1455 | mov edi, 0xD000 |
1439 | push eax |
1456 | push eax |
1440 | .l1: |
1457 | .l1: |
1441 | call fat_get_name |
1458 | call fat_get_name |
1442 | jc .l2 |
1459 | jc .l2 |
1443 | cmp byte [edi+11], 0xF |
1460 | cmp byte [edi+11], 0xF |
1444 | jnz .do_bdfe |
1461 | jnz .do_bdfe |
1445 | add edi, 0x20 |
1462 | add edi, 0x20 |
1446 | cmp edi, 0xD200 |
1463 | cmp edi, 0xD200 |
1447 | jb .do_bdfe |
1464 | jb .do_bdfe |
1448 | pop eax |
1465 | pop eax |
1449 | inc eax |
1466 | inc eax |
1450 | dec byte [esp+262*2+12] |
1467 | dec byte [esp+262*2+12] |
1451 | jz .done |
1468 | jz .done |
1452 | jns @f |
1469 | jns @f |
1453 | ; read next sector from FAT |
1470 | ; read next sector from FAT |
1454 | mov eax, [(eax-31-1)*2+0x282000] |
1471 | mov eax, [(eax-31-1)*2+0x282000] |
1455 | and eax, 0xFFF |
1472 | and eax, 0xFFF |
1456 | cmp eax, 0xFF8 |
1473 | cmp eax, 0xFF8 |
1457 | jae .done |
1474 | jae .done |
1458 | add eax, 31 |
1475 | add eax, 31 |
1459 | mov byte [esp+262*2+12], 0 |
1476 | mov byte [esp+262*2+12], 0 |
1460 | @@: |
1477 | @@: |
1461 | pusha |
1478 | pusha |
1462 | call read_chs_sector |
1479 | call read_chs_sector |
1463 | popa |
1480 | popa |
1464 | cmp [FDC_Status], 0 |
1481 | cmp [FDC_Status], 0 |
1465 | jnz .error |
1482 | jnz .error |
1466 | mov edi, 0xD000 |
1483 | mov edi, 0xD000 |
1467 | push eax |
1484 | push eax |
1468 | .do_bdfe: |
1485 | .do_bdfe: |
1469 | inc dword [edx+8] ; new file found |
1486 | inc dword [edx+8] ; new file found |
1470 | dec ebx |
1487 | dec ebx |
1471 | jns .l2 |
1488 | jns .l2 |
1472 | dec ecx |
1489 | dec ecx |
1473 | js .l2 |
1490 | js .l2 |
1474 | inc dword [edx+4] ; new file block copied |
1491 | inc dword [edx+4] ; new file block copied |
1475 | call fat_entry_to_bdfe |
1492 | call fat_entry_to_bdfe |
1476 | .l2: |
1493 | .l2: |
1477 | add edi, 0x20 |
1494 | add edi, 0x20 |
1478 | cmp edi, 0xD200 |
1495 | cmp edi, 0xD200 |
1479 | jb .l1 |
1496 | jb .l1 |
1480 | pop eax |
1497 | pop eax |
1481 | inc eax |
1498 | inc eax |
1482 | dec byte [esp+262*2+12] |
1499 | dec byte [esp+262*2+12] |
1483 | jz .done |
1500 | jz .done |
1484 | jns @f |
1501 | jns @f |
1485 | ; read next sector from FAT |
1502 | ; read next sector from FAT |
1486 | mov eax, [(eax-31-1)*2+0x282000] |
1503 | mov eax, [(eax-31-1)*2+0x282000] |
1487 | and eax, 0xFFF |
1504 | and eax, 0xFFF |
1488 | cmp eax, 0xFF8 |
1505 | cmp eax, 0xFF8 |
1489 | jae .done |
1506 | jae .done |
1490 | add eax, 31 |
1507 | add eax, 31 |
1491 | mov byte [esp+262*2+12], 0 |
1508 | mov byte [esp+262*2+12], 0 |
1492 | @@: |
1509 | @@: |
1493 | jmp .main_loop |
1510 | jmp .main_loop |
1494 | .error: |
1511 | .error: |
1495 | add esp, 262*2+4 |
1512 | add esp, 262*2+4 |
1496 | pop ebp ecx edi edi |
1513 | pop ebp ecx edi edi |
1497 | or ebx, -1 |
1514 | or ebx, -1 |
1498 | mov eax, ERROR_FILE_NOT_FOUND |
1515 | mov eax, ERROR_FILE_NOT_FOUND |
1499 | ret |
1516 | ret |
1500 | .done: |
1517 | .done: |
1501 | add esp, 262*2+4 |
1518 | add esp, 262*2+4 |
1502 | pop ebp |
1519 | pop ebp |
1503 | mov ebx, [edx+4] |
1520 | mov ebx, [edx+4] |
1504 | xor eax, eax |
1521 | xor eax, eax |
1505 | dec ecx |
1522 | dec ecx |
1506 | js @f |
1523 | js @f |
1507 | mov al, ERROR_END_OF_FILE |
1524 | mov al, ERROR_END_OF_FILE |
1508 | @@: |
1525 | @@: |
1509 | pop ecx edi edi |
1526 | pop ecx edi edi |
1510 | ret |
1527 | ret |
1511 | 1528 | ||
1512 | ;---------------------------------------------------------------- |
1529 | ;---------------------------------------------------------------- |
1513 | ; |
1530 | ; |
1514 | ; fs_FloppyRewrite - LFN variant for writing sys floppy |
1531 | ; fs_FloppyRewrite - LFN variant for writing sys floppy |
1515 | ; |
1532 | ; |
1516 | ; esi points to filename |
1533 | ; esi points to filename |
1517 | ; ebx ignored (reserved) |
1534 | ; ebx ignored (reserved) |
1518 | ; ecx number of bytes to write, 0+ |
1535 | ; ecx number of bytes to write, 0+ |
1519 | ; edx mem location to data |
1536 | ; edx mem location to data |
1520 | ; |
1537 | ; |
1521 | ; ret ebx = number of written bytes |
1538 | ; ret ebx = number of written bytes |
1522 | ; eax = 0 ok read or other = errormsg |
1539 | ; eax = 0 ok read or other = errormsg |
1523 | ; |
1540 | ; |
1524 | ;-------------------------------------------------------------- |
1541 | ;-------------------------------------------------------------- |
1525 | @@: |
1542 | @@: |
1526 | mov eax, ERROR_ACCESS_DENIED |
1543 | mov eax, ERROR_ACCESS_DENIED |
1527 | xor ebx, ebx |
1544 | xor ebx, ebx |
1528 | ret |
1545 | ret |
1529 | fsfrfe2: |
1546 | fsfrfe2: |
1530 | popad |
1547 | popad |
1531 | fsfrfe: |
1548 | fsfrfe: |
1532 | mov eax, 11 |
1549 | mov eax, 11 |
1533 | xor ebx, ebx |
1550 | xor ebx, ebx |
1534 | ret |
1551 | ret |
1535 | 1552 | ||
1536 | fs_FloppyRewrite: |
1553 | fs_FloppyRewrite: |
1537 | cmp byte [esi], 0 |
1554 | cmp byte [esi], 0 |
1538 | jz @b |
1555 | jz @b |
1539 | call read_flp_fat |
1556 | call read_flp_fat |
1540 | cmp [FDC_Status], 0 |
1557 | cmp [FDC_Status], 0 |
1541 | jnz fsfrfe |
1558 | jnz fsfrfe |
1542 | pushad |
1559 | pushad |
1543 | xor ebp, ebp |
1560 | xor ebp, ebp |
1544 | push esi |
1561 | push esi |
1545 | @@: |
1562 | @@: |
1546 | lodsb |
1563 | lodsb |
1547 | test al, al |
1564 | test al, al |
1548 | jz @f |
1565 | jz @f |
1549 | cmp al, '/' |
1566 | cmp al, '/' |
1550 | jnz @b |
1567 | jnz @b |
1551 | lea ebp, [esi-1] |
1568 | lea ebp, [esi-1] |
1552 | jmp @b |
1569 | jmp @b |
1553 | @@: |
1570 | @@: |
1554 | pop esi |
1571 | pop esi |
1555 | test ebp, ebp |
1572 | test ebp, ebp |
1556 | jnz .noroot |
1573 | jnz .noroot |
1557 | call read_flp_root |
1574 | call read_flp_root |
1558 | cmp [FDC_Status], 0 |
1575 | cmp [FDC_Status], 0 |
1559 | jnz fsfrfe2 |
1576 | jnz fsfrfe2 |
1560 | push flp_rootmem_extend_dir |
1577 | push flp_rootmem_extend_dir |
1561 | push flp_rootmem_end_write |
1578 | push flp_rootmem_end_write |
1562 | push flp_rootmem_next_write |
1579 | push flp_rootmem_next_write |
1563 | push flp_rootmem_begin_write |
1580 | push flp_rootmem_begin_write |
1564 | xor ebp, ebp |
1581 | xor ebp, ebp |
1565 | push ebp |
1582 | push ebp |
1566 | push flp_rootmem_first |
1583 | push flp_rootmem_first |
1567 | push flp_rootmem_next |
1584 | push flp_rootmem_next |
1568 | jmp .common1 |
1585 | jmp .common1 |
1569 | .noroot: |
1586 | .noroot: |
1570 | ; check existence |
1587 | ; check existence |
1571 | mov byte [ebp], 0 |
1588 | mov byte [ebp], 0 |
1572 | call fd_find_lfn |
1589 | call fd_find_lfn |
1573 | mov byte [ebp], '/' |
1590 | mov byte [ebp], '/' |
1574 | lea esi, [ebp+1] |
1591 | lea esi, [ebp+1] |
1575 | jnc @f |
1592 | jnc @f |
1576 | mov eax, ERROR_FILE_NOT_FOUND |
1593 | mov eax, ERROR_FILE_NOT_FOUND |
1577 | .ret1: |
1594 | .ret1: |
1578 | mov [esp+28], eax |
1595 | mov [esp+28], eax |
1579 | popad |
1596 | popad |
1580 | xor ebx, ebx |
1597 | xor ebx, ebx |
1581 | ret |
1598 | ret |
1582 | @@: |
1599 | @@: |
1583 | test byte [edi+11], 0x10 ; must be directory |
1600 | test byte [edi+11], 0x10 ; must be directory |
1584 | mov eax, ERROR_ACCESS_DENIED |
1601 | mov eax, ERROR_ACCESS_DENIED |
1585 | jz .ret1 |
1602 | jz .ret1 |
1586 | movzx ebp, word [edi+26] ; ebp=cluster |
1603 | movzx ebp, word [edi+26] ; ebp=cluster |
1587 | mov eax, ERROR_FAT_TABLE |
1604 | mov eax, ERROR_FAT_TABLE |
1588 | cmp ebp, 2 |
1605 | cmp ebp, 2 |
1589 | jb .ret1 |
1606 | jb .ret1 |
1590 | cmp ebp, 2849 |
1607 | cmp ebp, 2849 |
1591 | jae .ret1 |
1608 | jae .ret1 |
1592 | push flp_notroot_extend_dir |
1609 | push flp_notroot_extend_dir |
1593 | push flp_notroot_end_write |
1610 | push flp_notroot_end_write |
1594 | push flp_notroot_next_write |
1611 | push flp_notroot_next_write |
1595 | push flp_notroot_begin_write |
1612 | push flp_notroot_begin_write |
1596 | push ebp |
1613 | push ebp |
1597 | push flp_notroot_first |
1614 | push flp_notroot_first |
1598 | push flp_notroot_next |
1615 | push flp_notroot_next |
1599 | .common1: |
1616 | .common1: |
1600 | call fat_find_lfn |
1617 | call fat_find_lfn |
1601 | jc .notfound |
1618 | jc .notfound |
1602 | ; found; must not be directory |
1619 | ; found; must not be directory |
1603 | test byte [edi+11], 10h |
1620 | test byte [edi+11], 10h |
1604 | jz @f |
1621 | jz @f |
1605 | add esp, 28 |
1622 | add esp, 28 |
1606 | popad |
1623 | popad |
1607 | mov eax, ERROR_ACCESS_DENIED |
1624 | mov eax, ERROR_ACCESS_DENIED |
1608 | xor ebx, ebx |
1625 | xor ebx, ebx |
1609 | ret |
1626 | ret |
1610 | @@: |
1627 | @@: |
1611 | ; delete FAT chain |
1628 | ; delete FAT chain |
1612 | push edi |
1629 | push edi |
1613 | xor eax, eax |
1630 | xor eax, eax |
1614 | mov dword [edi+28], eax ; zero size |
1631 | mov dword [edi+28], eax ; zero size |
1615 | xchg ax, word [edi+26] ; start cluster |
1632 | xchg ax, word [edi+26] ; start cluster |
1616 | test eax, eax |
1633 | test eax, eax |
1617 | jz .done1 |
1634 | jz .done1 |
1618 | @@: |
1635 | @@: |
1619 | cmp eax, 0xFF8 |
1636 | cmp eax, 0xFF8 |
1620 | jae .done1 |
1637 | jae .done1 |
1621 | lea edi, [0x282000 + eax*2] ; position in FAT |
1638 | lea edi, [0x282000 + eax*2] ; position in FAT |
1622 | xor eax, eax |
1639 | xor eax, eax |
1623 | xchg ax, [edi] |
1640 | xchg ax, [edi] |
1624 | jmp @b |
1641 | jmp @b |
1625 | .done1: |
1642 | .done1: |
1626 | pop edi |
1643 | pop edi |
1627 | call get_time_for_file |
1644 | call get_time_for_file |
1628 | mov [edi+22], ax |
1645 | mov [edi+22], ax |
1629 | call get_date_for_file |
1646 | call get_date_for_file |
1630 | mov [edi+24], ax |
1647 | mov [edi+24], ax |
1631 | mov [edi+18], ax |
1648 | mov [edi+18], ax |
1632 | or byte [edi+11], 20h ; set 'archive' attribute |
1649 | or byte [edi+11], 20h ; set 'archive' attribute |
1633 | jmp .doit |
1650 | jmp .doit |
1634 | .notfound: |
1651 | .notfound: |
1635 | ; file is not found; generate short name |
1652 | ; file is not found; generate short name |
1636 | call fat_name_is_legal |
1653 | call fat_name_is_legal |
1637 | jc @f |
1654 | jc @f |
1638 | add esp, 28 |
1655 | add esp, 28 |
1639 | popad |
1656 | popad |
1640 | mov eax, ERROR_FILE_NOT_FOUND |
1657 | mov eax, ERROR_FILE_NOT_FOUND |
1641 | xor ebx, ebx |
1658 | xor ebx, ebx |
1642 | ret |
1659 | ret |
1643 | @@: |
1660 | @@: |
1644 | sub esp, 12 |
1661 | sub esp, 12 |
1645 | mov edi, esp |
1662 | mov edi, esp |
1646 | call fat_gen_short_name |
1663 | call fat_gen_short_name |
1647 | .test_short_name_loop: |
1664 | .test_short_name_loop: |
1648 | push esi edi ecx |
1665 | push esi edi ecx |
1649 | mov esi, edi |
1666 | mov esi, edi |
1650 | lea eax, [esp+12+12+8] |
1667 | lea eax, [esp+12+12+8] |
1651 | mov [eax], ebp |
1668 | mov [eax], ebp |
1652 | call dword [eax-4] |
1669 | call dword [eax-4] |
1653 | jc .found |
1670 | jc .found |
1654 | .test_short_name_entry: |
1671 | .test_short_name_entry: |
1655 | cmp byte [edi+11], 0xF |
1672 | cmp byte [edi+11], 0xF |
1656 | jz .test_short_name_cont |
1673 | jz .test_short_name_cont |
1657 | mov ecx, 11 |
1674 | mov ecx, 11 |
1658 | push esi edi |
1675 | push esi edi |
1659 | repz cmpsb |
1676 | repz cmpsb |
1660 | pop edi esi |
1677 | pop edi esi |
1661 | jz .short_name_found |
1678 | jz .short_name_found |
1662 | .test_short_name_cont: |
1679 | .test_short_name_cont: |
1663 | lea eax, [esp+12+12+8] |
1680 | lea eax, [esp+12+12+8] |
1664 | call dword [eax-8] |
1681 | call dword [eax-8] |
1665 | jnc .test_short_name_entry |
1682 | jnc .test_short_name_entry |
1666 | jmp .found |
1683 | jmp .found |
1667 | .short_name_found: |
1684 | .short_name_found: |
1668 | pop ecx edi esi |
1685 | pop ecx edi esi |
1669 | call fat_next_short_name |
1686 | call fat_next_short_name |
1670 | jnc .test_short_name_loop |
1687 | jnc .test_short_name_loop |
1671 | .disk_full: |
1688 | .disk_full: |
1672 | add esp, 12+28 |
1689 | add esp, 12+28 |
1673 | popa |
1690 | popa |
1674 | mov eax, ERROR_DISK_FULL |
1691 | mov eax, ERROR_DISK_FULL |
1675 | xor ebx, ebx |
1692 | xor ebx, ebx |
1676 | ret |
1693 | ret |
1677 | .found: |
1694 | .found: |
1678 | pop ecx edi esi |
1695 | pop ecx edi esi |
1679 | ; now find space in directory |
1696 | ; now find space in directory |
1680 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
1697 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
1681 | mov al, '~' |
1698 | mov al, '~' |
1682 | push ecx edi |
1699 | push ecx edi |
1683 | mov ecx, 8 |
1700 | mov ecx, 8 |
1684 | repnz scasb |
1701 | repnz scasb |
1685 | push 1 |
1702 | push 1 |
1686 | pop eax ; 1 entry |
1703 | pop eax ; 1 entry |
1687 | jnz .notilde |
1704 | jnz .notilde |
1688 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
1705 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
1689 | xor eax, eax |
1706 | xor eax, eax |
1690 | @@: |
1707 | @@: |
1691 | cmp byte [esi], 0 |
1708 | cmp byte [esi], 0 |
1692 | jz @f |
1709 | jz @f |
1693 | inc esi |
1710 | inc esi |
1694 | inc eax |
1711 | inc eax |
1695 | jmp @b |
1712 | jmp @b |
1696 | @@: |
1713 | @@: |
1697 | sub esi, eax |
1714 | sub esi, eax |
1698 | add eax, 12+13 |
1715 | add eax, 12+13 |
1699 | mov ecx, 13 |
1716 | mov ecx, 13 |
1700 | push edx |
1717 | push edx |
1701 | cdq |
1718 | cdq |
1702 | div ecx |
1719 | div ecx |
1703 | pop edx |
1720 | pop edx |
1704 | .notilde: |
1721 | .notilde: |
1705 | push -1 |
1722 | push -1 |
1706 | push -1 |
1723 | push -1 |
1707 | ; find |
1724 | ; find |
1708 | xor ecx, ecx |
1725 | xor ecx, ecx |
1709 | push eax |
1726 | push eax |
1710 | lea eax, [esp+12+8+12+8] |
1727 | lea eax, [esp+12+8+12+8] |
1711 | mov [eax], ebp |
1728 | mov [eax], ebp |
1712 | call dword [eax-4] |
1729 | call dword [eax-4] |
1713 | pop eax |
1730 | pop eax |
1714 | jnc .scan_dir |
1731 | jnc .scan_dir |
1715 | .fsfrfe3: |
1732 | .fsfrfe3: |
1716 | add esp, 8+8+12+28 |
1733 | add esp, 8+8+12+28 |
1717 | popad |
1734 | popad |
1718 | mov eax, 11 |
1735 | mov eax, 11 |
1719 | xor ebx, ebx |
1736 | xor ebx, ebx |
1720 | ret |
1737 | ret |
1721 | .scan_dir: |
1738 | .scan_dir: |
1722 | cmp byte [edi], 0 |
1739 | cmp byte [edi], 0 |
1723 | jz .free |
1740 | jz .free |
1724 | cmp byte [edi], 0xE5 |
1741 | cmp byte [edi], 0xE5 |
1725 | jz .free |
1742 | jz .free |
1726 | xor ecx, ecx |
1743 | xor ecx, ecx |
1727 | .scan_cont: |
1744 | .scan_cont: |
1728 | push eax |
1745 | push eax |
1729 | lea eax, [esp+12+8+12+8] |
1746 | lea eax, [esp+12+8+12+8] |
1730 | call dword [eax-8] |
1747 | call dword [eax-8] |
1731 | pop eax |
1748 | pop eax |
1732 | jnc .scan_dir |
1749 | jnc .scan_dir |
1733 | cmp [FDC_Status], 0 |
1750 | cmp [FDC_Status], 0 |
1734 | jnz .fsfrfe3 |
1751 | jnz .fsfrfe3 |
1735 | push eax |
1752 | push eax |
1736 | lea eax, [esp+12+8+12+8] |
1753 | lea eax, [esp+12+8+12+8] |
1737 | call dword [eax+16] ; extend directory |
1754 | call dword [eax+16] ; extend directory |
1738 | pop eax |
1755 | pop eax |
1739 | jnc .scan_dir |
1756 | jnc .scan_dir |
1740 | add esp, 8+8+12+28 |
1757 | add esp, 8+8+12+28 |
1741 | popad |
1758 | popad |
1742 | mov eax, ERROR_DISK_FULL |
1759 | mov eax, ERROR_DISK_FULL |
1743 | xor ebx, ebx |
1760 | xor ebx, ebx |
1744 | ret |
1761 | ret |
1745 | .free: |
1762 | .free: |
1746 | test ecx, ecx |
1763 | test ecx, ecx |
1747 | jnz @f |
1764 | jnz @f |
1748 | mov [esp], edi |
1765 | mov [esp], edi |
1749 | mov ecx, [esp+8+8+12+8] |
1766 | mov ecx, [esp+8+8+12+8] |
1750 | mov [esp+4], ecx |
1767 | mov [esp+4], ecx |
1751 | xor ecx, ecx |
1768 | xor ecx, ecx |
1752 | @@: |
1769 | @@: |
1753 | inc ecx |
1770 | inc ecx |
1754 | cmp ecx, eax |
1771 | cmp ecx, eax |
1755 | jb .scan_cont |
1772 | jb .scan_cont |
1756 | ; found! |
1773 | ; found! |
1757 | ; calculate name checksum |
1774 | ; calculate name checksum |
1758 | push esi ecx |
1775 | push esi ecx |
1759 | mov esi, [esp+8+8] |
1776 | mov esi, [esp+8+8] |
1760 | mov ecx, 11 |
1777 | mov ecx, 11 |
1761 | xor eax, eax |
1778 | xor eax, eax |
1762 | @@: |
1779 | @@: |
1763 | ror al, 1 |
1780 | ror al, 1 |
1764 | add al, [esi] |
1781 | add al, [esi] |
1765 | inc esi |
1782 | inc esi |
1766 | loop @b |
1783 | loop @b |
1767 | pop ecx esi |
1784 | pop ecx esi |
1768 | pop edi |
1785 | pop edi |
1769 | pop dword [esp+8+12+8] |
1786 | pop dword [esp+8+12+8] |
1770 | ; edi points to first entry in free chunk |
1787 | ; edi points to first entry in free chunk |
1771 | dec ecx |
1788 | dec ecx |
1772 | jz .nolfn |
1789 | jz .nolfn |
1773 | push esi |
1790 | push esi |
1774 | push eax |
1791 | push eax |
1775 | lea eax, [esp+8+8+12+8] |
1792 | lea eax, [esp+8+8+12+8] |
1776 | call dword [eax+4] ; begin write |
1793 | call dword [eax+4] ; begin write |
1777 | mov al, 40h |
1794 | mov al, 40h |
1778 | .writelfn: |
1795 | .writelfn: |
1779 | or al, cl |
1796 | or al, cl |
1780 | mov esi, [esp+4] |
1797 | mov esi, [esp+4] |
1781 | push ecx |
1798 | push ecx |
1782 | dec ecx |
1799 | dec ecx |
1783 | imul ecx, 13 |
1800 | imul ecx, 13 |
1784 | add esi, ecx |
1801 | add esi, ecx |
1785 | stosb |
1802 | stosb |
1786 | mov cl, 5 |
1803 | mov cl, 5 |
1787 | call fs_RamdiskRewrite.read_symbols |
1804 | call fs_RamdiskRewrite.read_symbols |
1788 | mov ax, 0xF |
1805 | mov ax, 0xF |
1789 | stosw |
1806 | stosw |
1790 | mov al, [esp+4] |
1807 | mov al, [esp+4] |
1791 | stosb |
1808 | stosb |
1792 | mov cl, 6 |
1809 | mov cl, 6 |
1793 | call fs_RamdiskRewrite.read_symbols |
1810 | call fs_RamdiskRewrite.read_symbols |
1794 | xor eax, eax |
1811 | xor eax, eax |
1795 | stosw |
1812 | stosw |
1796 | mov cl, 2 |
1813 | mov cl, 2 |
1797 | call fs_RamdiskRewrite.read_symbols |
1814 | call fs_RamdiskRewrite.read_symbols |
1798 | pop ecx |
1815 | pop ecx |
1799 | lea eax, [esp+8+8+12+8] |
1816 | lea eax, [esp+8+8+12+8] |
1800 | call dword [eax+8] ; next write |
1817 | call dword [eax+8] ; next write |
1801 | xor eax, eax |
1818 | xor eax, eax |
1802 | loop .writelfn |
1819 | loop .writelfn |
1803 | pop eax |
1820 | pop eax |
1804 | pop esi |
1821 | pop esi |
1805 | ; lea eax, [esp+8+12+8] |
1822 | ; lea eax, [esp+8+12+8] |
1806 | ; call dword [eax+12] ; end write |
1823 | ; call dword [eax+12] ; end write |
1807 | .nolfn: |
1824 | .nolfn: |
1808 | xchg esi, [esp] |
1825 | xchg esi, [esp] |
1809 | mov ecx, 11 |
1826 | mov ecx, 11 |
1810 | rep movsb |
1827 | rep movsb |
1811 | mov word [edi], 20h ; attributes |
1828 | mov word [edi], 20h ; attributes |
1812 | sub edi, 11 |
1829 | sub edi, 11 |
1813 | pop esi ecx |
1830 | pop esi ecx |
1814 | add esp, 12 |
1831 | add esp, 12 |
1815 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
1832 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
1816 | call get_time_for_file |
1833 | call get_time_for_file |
1817 | mov [edi+14], ax ; creation time |
1834 | mov [edi+14], ax ; creation time |
1818 | mov [edi+22], ax ; last write time |
1835 | mov [edi+22], ax ; last write time |
1819 | call get_date_for_file |
1836 | call get_date_for_file |
1820 | mov [edi+16], ax ; creation date |
1837 | mov [edi+16], ax ; creation date |
1821 | mov [edi+24], ax ; last write date |
1838 | mov [edi+24], ax ; last write date |
1822 | mov [edi+18], ax ; last access date |
1839 | mov [edi+18], ax ; last access date |
1823 | and word [edi+20], 0 ; high word of cluster |
1840 | and word [edi+20], 0 ; high word of cluster |
1824 | and word [edi+26], 0 ; low word of cluster - to be filled |
1841 | and word [edi+26], 0 ; low word of cluster - to be filled |
1825 | and dword [edi+28], 0 ; file size - to be filled |
1842 | and dword [edi+28], 0 ; file size - to be filled |
1826 | .doit: |
1843 | .doit: |
1827 | lea eax, [esp+8] |
1844 | lea eax, [esp+8] |
1828 | call dword [eax+12] ; flush directory |
1845 | call dword [eax+12] ; flush directory |
1829 | push ecx |
1846 | push ecx |
1830 | push edi |
1847 | push edi |
1831 | push 0 |
1848 | push 0 |
1832 | mov esi, edx |
1849 | mov esi, edx |
1833 | jecxz .done |
1850 | jecxz .done |
1834 | mov ecx, 2849 |
1851 | mov ecx, 2849 |
1835 | mov edi, 0x282000 |
1852 | mov edi, 0x282000 |
1836 | push 0 ; first cluster |
1853 | push 0 ; first cluster |
1837 | .write_loop: |
1854 | .write_loop: |
1838 | ; allocate new cluster |
1855 | ; allocate new cluster |
1839 | xor eax, eax |
1856 | xor eax, eax |
1840 | repnz scasw |
1857 | repnz scasw |
1841 | mov al, ERROR_DISK_FULL |
1858 | mov al, ERROR_DISK_FULL |
1842 | jnz .ret |
1859 | jnz .ret |
1843 | dec edi |
1860 | dec edi |
1844 | dec edi |
1861 | dec edi |
1845 | lea eax, [edi-0x282000] |
1862 | lea eax, [edi-0x282000] |
1846 | shr eax, 1 ; eax = cluster |
1863 | shr eax, 1 ; eax = cluster |
1847 | mov word [edi], 0xFFF ; mark as last cluster |
1864 | mov word [edi], 0xFFF ; mark as last cluster |
1848 | xchg edi, [esp+4] |
1865 | xchg edi, [esp+4] |
1849 | cmp dword [esp], 0 |
1866 | cmp dword [esp], 0 |
1850 | jz .first |
1867 | jz .first |
1851 | stosw |
1868 | stosw |
1852 | jmp @f |
1869 | jmp @f |
1853 | .first: |
1870 | .first: |
1854 | mov [esp], eax |
1871 | mov [esp], eax |
1855 | @@: |
1872 | @@: |
1856 | mov edi, [esp+4] |
1873 | mov edi, [esp+4] |
1857 | inc ecx |
1874 | inc ecx |
1858 | ; write data |
1875 | ; write data |
1859 | push ecx edi |
1876 | push ecx edi |
1860 | mov ecx, 512 |
1877 | mov ecx, 512 |
1861 | cmp dword [esp+20], ecx |
1878 | cmp dword [esp+20], ecx |
1862 | jae @f |
1879 | jae @f |
1863 | mov ecx, [esp+20] |
1880 | mov ecx, [esp+20] |
1864 | @@: |
1881 | @@: |
1865 | push ecx |
1882 | push ecx |
1866 | mov edi, 0xD000 |
1883 | mov edi, 0xD000 |
1867 | rep movsb |
1884 | rep movsb |
1868 | pop ecx |
1885 | pop ecx |
1869 | push ecx |
1886 | push ecx |
1870 | sub ecx, 512 |
1887 | sub ecx, 512 |
1871 | neg ecx |
1888 | neg ecx |
1872 | push eax |
1889 | push eax |
1873 | xor eax, eax |
1890 | xor eax, eax |
1874 | rep stosb |
1891 | rep stosb |
1875 | pop eax |
1892 | pop eax |
1876 | add eax, 31 |
1893 | add eax, 31 |
1877 | pusha |
1894 | pusha |
1878 | call save_chs_sector |
1895 | call save_chs_sector |
1879 | popa |
1896 | popa |
1880 | pop ecx |
1897 | pop ecx |
1881 | cmp [FDC_Status], 0 |
1898 | cmp [FDC_Status], 0 |
1882 | jnz .diskerr |
1899 | jnz .diskerr |
1883 | sub [esp+20], ecx |
1900 | sub [esp+20], ecx |
1884 | pop edi ecx |
1901 | pop edi ecx |
1885 | jnz .write_loop |
1902 | jnz .write_loop |
1886 | .done: |
1903 | .done: |
1887 | xor eax, eax |
1904 | xor eax, eax |
1888 | .ret: |
1905 | .ret: |
1889 | pop ebx edi edi ecx |
1906 | pop ebx edi edi ecx |
1890 | mov [esp+28+28], eax |
1907 | mov [esp+28+28], eax |
1891 | lea eax, [esp+8] |
1908 | lea eax, [esp+8] |
1892 | call dword [eax+4] |
1909 | call dword [eax+4] |
1893 | mov [edi+26], bx |
1910 | mov [edi+26], bx |
1894 | mov ebx, esi |
1911 | mov ebx, esi |
1895 | sub ebx, edx |
1912 | sub ebx, edx |
1896 | mov [edi+28], ebx |
1913 | mov [edi+28], ebx |
1897 | call dword [eax+12] |
1914 | call dword [eax+12] |
1898 | mov [esp+28+16], ebx |
1915 | mov [esp+28+16], ebx |
1899 | test ebp, ebp |
1916 | test ebp, ebp |
1900 | jnz @f |
1917 | jnz @f |
1901 | call save_flp_root |
1918 | call save_flp_root |
1902 | @@: |
1919 | @@: |
1903 | add esp, 28 |
1920 | add esp, 28 |
1904 | cmp [FDC_Status], 0 |
1921 | cmp [FDC_Status], 0 |
1905 | jnz .err3 |
1922 | jnz .err3 |
1906 | call save_flp_fat |
1923 | call save_flp_fat |
1907 | cmp [FDC_Status], 0 |
1924 | cmp [FDC_Status], 0 |
1908 | jnz .err3 |
1925 | jnz .err3 |
1909 | popa |
1926 | popa |
1910 | ret |
1927 | ret |
1911 | .err3: |
1928 | .err3: |
1912 | popa |
1929 | popa |
1913 | mov al, 11 |
1930 | mov al, 11 |
1914 | xor ebx, ebx |
1931 | xor ebx, ebx |
1915 | ret |
1932 | ret |
1916 | .diskerr: |
1933 | .diskerr: |
1917 | sub esi, ecx |
1934 | sub esi, ecx |
1918 | mov eax, 11 |
1935 | mov eax, 11 |
1919 | pop edi ecx |
1936 | pop edi ecx |
1920 | jmp .ret |
1937 | jmp .ret |
1921 | 1938 | ||
1922 | ;---------------------------------------------------------------- |
1939 | ;---------------------------------------------------------------- |
1923 | ; |
1940 | ; |
1924 | ; fs_FloppyWrite - LFN variant for writing to floppy |
1941 | ; fs_FloppyWrite - LFN variant for writing to floppy |
1925 | ; |
1942 | ; |
1926 | ; esi points to filename |
1943 | ; esi points to filename |
1927 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1944 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1928 | ; may be ebx=0 - start from first byte |
1945 | ; may be ebx=0 - start from first byte |
1929 | ; ecx number of bytes to write, 0+ |
1946 | ; ecx number of bytes to write, 0+ |
1930 | ; edx mem location to data |
1947 | ; edx mem location to data |
1931 | ; |
1948 | ; |
1932 | ; ret ebx = bytes written (maybe 0) |
1949 | ; ret ebx = bytes written (maybe 0) |
1933 | ; eax = 0 ok write or other = errormsg |
1950 | ; eax = 0 ok write or other = errormsg |
1934 | ; |
1951 | ; |
1935 | ;-------------------------------------------------------------- |
1952 | ;-------------------------------------------------------------- |
1936 | 1953 | ||
1937 | @@: |
1954 | @@: |
1938 | push ERROR_ACCESS_DENIED |
1955 | push ERROR_ACCESS_DENIED |
1939 | fs_FloppyWrite.ret0: |
1956 | fs_FloppyWrite.ret0: |
1940 | pop eax |
1957 | pop eax |
1941 | xor ebx, ebx |
1958 | xor ebx, ebx |
1942 | ret |
1959 | ret |
1943 | 1960 | ||
1944 | fs_FloppyWrite.ret11: |
1961 | fs_FloppyWrite.ret11: |
1945 | push 11 |
1962 | push 11 |
1946 | jmp fs_FloppyWrite.ret0 |
1963 | jmp fs_FloppyWrite.ret0 |
1947 | 1964 | ||
1948 | fs_FloppyWrite: |
1965 | fs_FloppyWrite: |
1949 | cmp byte [esi], 0 |
1966 | cmp byte [esi], 0 |
1950 | jz @b |
1967 | jz @b |
1951 | call read_flp_fat |
1968 | call read_flp_fat |
1952 | cmp [FDC_Status], 0 |
1969 | cmp [FDC_Status], 0 |
1953 | jnz .ret11 |
1970 | jnz .ret11 |
1954 | pushad |
1971 | pushad |
1955 | call fd_find_lfn |
1972 | call fd_find_lfn |
1956 | jnc .found |
1973 | jnc .found |
1957 | popad |
1974 | popad |
1958 | push ERROR_FILE_NOT_FOUND |
1975 | push ERROR_FILE_NOT_FOUND |
1959 | jmp .ret0 |
1976 | jmp .ret0 |
1960 | .found: |
1977 | .found: |
1961 | ; FAT does not support files larger than 4GB |
1978 | ; FAT does not support files larger than 4GB |
1962 | test ebx, ebx |
1979 | test ebx, ebx |
1963 | jz .l1 |
1980 | jz .l1 |
1964 | cmp dword [ebx+4], 0 |
1981 | cmp dword [ebx+4], 0 |
1965 | jz @f |
1982 | jz @f |
1966 | .eof: |
1983 | .eof: |
1967 | popad |
1984 | popad |
1968 | push ERROR_END_OF_FILE |
1985 | push ERROR_END_OF_FILE |
1969 | jmp .ret0 |
1986 | jmp .ret0 |
1970 | @@: |
1987 | @@: |
1971 | mov ebx, [ebx] |
1988 | mov ebx, [ebx] |
1972 | .l1: |
1989 | .l1: |
1973 | ; now edi points to direntry, ebx=start byte to write, |
1990 | ; now edi points to direntry, ebx=start byte to write, |
1974 | ; ecx=number of bytes to write, edx=data pointer |
1991 | ; ecx=number of bytes to write, edx=data pointer |
1975 | 1992 | ||
1976 | ; extend file if needed |
1993 | ; extend file if needed |
1977 | add ecx, ebx |
1994 | add ecx, ebx |
1978 | jc .eof ; FAT does not support files larger than 4GB |
1995 | jc .eof ; FAT does not support files larger than 4GB |
1979 | push eax ; save directory cluster |
1996 | push eax ; save directory cluster |
1980 | push 0 ; return value=0 |
1997 | push 0 ; return value=0 |
1981 | 1998 | ||
1982 | call get_time_for_file |
1999 | call get_time_for_file |
1983 | mov [edi+22], ax ; last write time |
2000 | mov [edi+22], ax ; last write time |
1984 | call get_date_for_file |
2001 | call get_date_for_file |
1985 | mov [edi+24], ax ; last write date |
2002 | mov [edi+24], ax ; last write date |
1986 | mov [edi+18], ax ; last access date |
2003 | mov [edi+18], ax ; last access date |
1987 | 2004 | ||
1988 | push dword [edi+28] ; save current file size |
2005 | push dword [edi+28] ; save current file size |
1989 | cmp ecx, [edi+28] |
2006 | cmp ecx, [edi+28] |
1990 | jbe .length_ok |
2007 | jbe .length_ok |
1991 | cmp ecx, ebx |
2008 | cmp ecx, ebx |
1992 | jz .length_ok |
2009 | jz .length_ok |
1993 | call floppy_extend_file |
2010 | call floppy_extend_file |
1994 | jnc .length_ok |
2011 | jnc .length_ok |
1995 | mov [esp+4], eax |
2012 | mov [esp+4], eax |
1996 | ; floppy_extend_file can return two error codes: FAT table error or disk full. |
2013 | ; floppy_extend_file can return two error codes: FAT table error or disk full. |
1997 | ; First case is fatal error, in second case we may write some data |
2014 | ; First case is fatal error, in second case we may write some data |
1998 | cmp al, ERROR_DISK_FULL |
2015 | cmp al, ERROR_DISK_FULL |
1999 | jz .disk_full |
2016 | jz .disk_full |
2000 | pop eax |
2017 | pop eax |
2001 | pop eax |
2018 | pop eax |
2002 | mov [esp+4+28], eax |
2019 | mov [esp+4+28], eax |
2003 | pop eax |
2020 | pop eax |
2004 | popad |
2021 | popad |
2005 | xor ebx, ebx |
2022 | xor ebx, ebx |
2006 | ret |
2023 | ret |
2007 | .disk_full: |
2024 | .disk_full: |
2008 | ; correct number of bytes to write |
2025 | ; correct number of bytes to write |
2009 | mov ecx, [edi+28] |
2026 | mov ecx, [edi+28] |
2010 | cmp ecx, ebx |
2027 | cmp ecx, ebx |
2011 | ja .length_ok |
2028 | ja .length_ok |
2012 | .ret: |
2029 | .ret: |
2013 | pop eax |
2030 | pop eax |
2014 | pop eax |
2031 | pop eax |
2015 | mov [esp+4+28], eax ; eax=return value |
2032 | mov [esp+4+28], eax ; eax=return value |
2016 | pop eax |
2033 | pop eax |
2017 | sub edx, [esp+20] |
2034 | sub edx, [esp+20] |
2018 | mov [esp+16], edx ; ebx=number of written bytes |
2035 | mov [esp+16], edx ; ebx=number of written bytes |
2019 | popad |
2036 | popad |
2020 | ret |
2037 | ret |
2021 | .length_ok: |
2038 | .length_ok: |
2022 | ; save FAT & directory |
2039 | ; save FAT & directory |
2023 | ; note that directory must be saved first because save_flp_fat uses buffer at 0xD000 |
2040 | ; note that directory must be saved first because save_flp_fat uses buffer at 0xD000 |
2024 | mov esi, [edi+28] |
2041 | mov esi, [edi+28] |
2025 | movzx edi, word [edi+26] ; starting cluster |
2042 | movzx edi, word [edi+26] ; starting cluster |
2026 | mov eax, [esp+8] |
2043 | mov eax, [esp+8] |
2027 | pusha |
2044 | pusha |
2028 | call save_chs_sector |
2045 | call save_chs_sector |
2029 | popa |
2046 | popa |
2030 | cmp [FDC_Status], 0 |
2047 | cmp [FDC_Status], 0 |
2031 | jnz .device_err |
2048 | jnz .device_err |
2032 | call save_flp_fat |
2049 | call save_flp_fat |
2033 | cmp [FDC_Status], 0 |
2050 | cmp [FDC_Status], 0 |
2034 | jz @f |
2051 | jz @f |
2035 | .device_err: |
2052 | .device_err: |
2036 | mov byte [esp+4], 11 |
2053 | mov byte [esp+4], 11 |
2037 | jmp .ret |
2054 | jmp .ret |
2038 | @@: |
2055 | @@: |
2039 | 2056 | ||
2040 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2057 | ; now ebx=start pos, ecx=end pos, both lie inside file |
2041 | sub ecx, ebx |
2058 | sub ecx, ebx |
2042 | jz .ret |
2059 | jz .ret |
2043 | call SetUserInterrupts |
2060 | call SetUserInterrupts |
2044 | .write_loop: |
2061 | .write_loop: |
2045 | lea eax, [edi+31] ; current sector |
2062 | lea eax, [edi+31] ; current sector |
2046 | ; get length of data in current sector |
2063 | ; get length of data in current sector |
2047 | push ecx |
2064 | push ecx |
2048 | sub ebx, 0x200 |
2065 | sub ebx, 0x200 |
2049 | jb .hasdata |
2066 | jb .hasdata |
2050 | neg ebx |
2067 | neg ebx |
2051 | xor ecx, ecx |
2068 | xor ecx, ecx |
2052 | jmp @f |
2069 | jmp @f |
2053 | .hasdata: |
2070 | .hasdata: |
2054 | neg ebx |
2071 | neg ebx |
2055 | cmp ecx, ebx |
2072 | cmp ecx, ebx |
2056 | jbe @f |
2073 | jbe @f |
2057 | mov ecx, ebx |
2074 | mov ecx, ebx |
2058 | @@: |
2075 | @@: |
2059 | ; load sector if needed |
2076 | ; load sector if needed |
2060 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
2077 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
2061 | jz .noread |
2078 | jz .noread |
2062 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
2079 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
2063 | jz .noread |
2080 | jz .noread |
2064 | cmp ecx, esi ; (same for the last sector) |
2081 | cmp ecx, esi ; (same for the last sector) |
2065 | jz .noread |
2082 | jz .noread |
2066 | pusha |
2083 | pusha |
2067 | call read_chs_sector |
2084 | call read_chs_sector |
2068 | popa |
2085 | popa |
2069 | cmp [FDC_Status], 0 |
2086 | cmp [FDC_Status], 0 |
2070 | jz @f |
2087 | jz @f |
2071 | .device_err2: |
2088 | .device_err2: |
2072 | pop ecx |
2089 | pop ecx |
2073 | jmp .device_err |
2090 | jmp .device_err |
2074 | @@: |
2091 | @@: |
2075 | .noread: |
2092 | .noread: |
2076 | ; zero uninitialized data if file was extended (because floppy_extend_file does not this) |
2093 | ; zero uninitialized data if file was extended (because floppy_extend_file does not this) |
2077 | push eax ecx edi |
2094 | push eax ecx edi |
2078 | xor eax, eax |
2095 | xor eax, eax |
2079 | mov ecx, 0x200 |
2096 | mov ecx, 0x200 |
2080 | sub ecx, [esp+4+12] |
2097 | sub ecx, [esp+4+12] |
2081 | jbe @f |
2098 | jbe @f |
2082 | mov edi, 0xD000 |
2099 | mov edi, 0xD000 |
2083 | add edi, [esp+4+12] |
2100 | add edi, [esp+4+12] |
2084 | rep stosb |
2101 | rep stosb |
2085 | @@: |
2102 | @@: |
2086 | ; zero uninitialized data in the last sector |
2103 | ; zero uninitialized data in the last sector |
2087 | mov ecx, 0x200 |
2104 | mov ecx, 0x200 |
2088 | sub ecx, esi |
2105 | sub ecx, esi |
2089 | jbe @f |
2106 | jbe @f |
2090 | mov edi, 0xD000 |
2107 | mov edi, 0xD000 |
2091 | add edi, esi |
2108 | add edi, esi |
2092 | rep stosb |
2109 | rep stosb |
2093 | @@: |
2110 | @@: |
2094 | pop edi ecx eax |
2111 | pop edi ecx eax |
2095 | ; copy new data |
2112 | ; copy new data |
2096 | push eax |
2113 | push eax |
2097 | mov eax, edx |
2114 | mov eax, edx |
2098 | neg ebx |
2115 | neg ebx |
2099 | jecxz @f |
2116 | jecxz @f |
2100 | add ebx, 0xD000+0x200 |
2117 | add ebx, 0xD000+0x200 |
2101 | call memmove |
2118 | call memmove |
2102 | xor ebx, ebx |
2119 | xor ebx, ebx |
2103 | @@: |
2120 | @@: |
2104 | pop eax |
2121 | pop eax |
2105 | ; save sector |
2122 | ; save sector |
2106 | pusha |
2123 | pusha |
2107 | call save_chs_sector |
2124 | call save_chs_sector |
2108 | popa |
2125 | popa |
2109 | cmp [FDC_Status], 0 |
2126 | cmp [FDC_Status], 0 |
2110 | jnz .device_err2 |
2127 | jnz .device_err2 |
2111 | add edx, ecx |
2128 | add edx, ecx |
2112 | sub [esp], ecx |
2129 | sub [esp], ecx |
2113 | pop ecx |
2130 | pop ecx |
2114 | jz .done |
2131 | jz .done |
2115 | .next_cluster: |
2132 | .next_cluster: |
2116 | movzx edi, word [edi*2+0x282000] |
2133 | movzx edi, word [edi*2+0x282000] |
2117 | sub esi, 0x200 |
2134 | sub esi, 0x200 |
2118 | jae @f |
2135 | jae @f |
2119 | xor esi, esi |
2136 | xor esi, esi |
2120 | @@: |
2137 | @@: |
2121 | sub dword [esp], 0x200 |
2138 | sub dword [esp], 0x200 |
2122 | jae .write_loop |
2139 | jae .write_loop |
2123 | and dword [esp], 0 |
2140 | and dword [esp], 0 |
2124 | jmp .write_loop |
2141 | jmp .write_loop |
2125 | .done: |
2142 | .done: |
2126 | mov [fdc_irq_func], fdc_null |
2143 | mov [fdc_irq_func], fdc_null |
2127 | jmp .ret |
2144 | jmp .ret |
2128 | 2145 | ||
2129 | floppy_extend_file.zero_size: |
2146 | floppy_extend_file.zero_size: |
2130 | xor eax, eax |
2147 | xor eax, eax |
2131 | jmp floppy_extend_file.start_extend |
2148 | jmp floppy_extend_file.start_extend |
2132 | 2149 | ||
2133 | ; extends file on floppy to given size (new data area is undefined) |
2150 | ; extends file on floppy to given size (new data area is undefined) |
2134 | ; in: edi->direntry, ecx=new size |
2151 | ; in: edi->direntry, ecx=new size |
2135 | ; out: CF=0 => OK, eax=0 |
2152 | ; out: CF=0 => OK, eax=0 |
2136 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL) |
2153 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL) |
2137 | floppy_extend_file: |
2154 | floppy_extend_file: |
2138 | push ecx |
2155 | push ecx |
2139 | ; find the last cluster of file |
2156 | ; find the last cluster of file |
2140 | movzx eax, word [edi+26] ; first cluster |
2157 | movzx eax, word [edi+26] ; first cluster |
2141 | mov ecx, [edi+28] |
2158 | mov ecx, [edi+28] |
2142 | jecxz .zero_size |
2159 | jecxz .zero_size |
2143 | @@: |
2160 | @@: |
2144 | sub ecx, 0x200 |
2161 | sub ecx, 0x200 |
2145 | jbe @f |
2162 | jbe @f |
2146 | mov eax, [eax*2+0x282000] |
2163 | mov eax, [eax*2+0x282000] |
2147 | and eax, 0xFFF |
2164 | and eax, 0xFFF |
2148 | jz .fat_err |
2165 | jz .fat_err |
2149 | cmp eax, 0xFF8 |
2166 | cmp eax, 0xFF8 |
2150 | jb @b |
2167 | jb @b |
2151 | .fat_err: |
2168 | .fat_err: |
2152 | pop ecx |
2169 | pop ecx |
2153 | push ERROR_FAT_TABLE |
2170 | push ERROR_FAT_TABLE |
2154 | pop eax |
2171 | pop eax |
2155 | stc |
2172 | stc |
2156 | ret |
2173 | ret |
2157 | @@: |
2174 | @@: |
2158 | push eax |
2175 | push eax |
2159 | mov eax, [eax*2+0x282000] |
2176 | mov eax, [eax*2+0x282000] |
2160 | and eax, 0xFFF |
2177 | and eax, 0xFFF |
2161 | cmp eax, 0xFF8 |
2178 | cmp eax, 0xFF8 |
2162 | pop eax |
2179 | pop eax |
2163 | jb .fat_err |
2180 | jb .fat_err |
2164 | ; set length to full number of sectors |
2181 | ; set length to full number of sectors |
2165 | sub [edi+28], ecx |
2182 | sub [edi+28], ecx |
2166 | .start_extend: |
2183 | .start_extend: |
2167 | pop ecx |
2184 | pop ecx |
2168 | ; now do extend |
2185 | ; now do extend |
2169 | push edx esi |
2186 | push edx esi |
2170 | mov esi, 0x282000+2*2 ; start scan from cluster 2 |
2187 | mov esi, 0x282000+2*2 ; start scan from cluster 2 |
2171 | mov edx, 2847 ; number of clusters to scan |
2188 | mov edx, 2847 ; number of clusters to scan |
2172 | .extend_loop: |
2189 | .extend_loop: |
2173 | cmp [edi+28], ecx |
2190 | cmp [edi+28], ecx |
2174 | jae .extend_done |
2191 | jae .extend_done |
2175 | ; add new sector |
2192 | ; add new sector |
2176 | push ecx |
2193 | push ecx |
2177 | push edi |
2194 | push edi |
2178 | .scan: |
2195 | .scan: |
2179 | mov ecx, edx |
2196 | mov ecx, edx |
2180 | mov edi, esi |
2197 | mov edi, esi |
2181 | jecxz .disk_full |
2198 | jecxz .disk_full |
2182 | push eax |
2199 | push eax |
2183 | xor eax, eax |
2200 | xor eax, eax |
2184 | repnz scasw |
2201 | repnz scasw |
2185 | pop eax |
2202 | pop eax |
2186 | jnz .disk_full |
2203 | jnz .disk_full |
2187 | mov word [edi-2], 0xFFF |
2204 | mov word [edi-2], 0xFFF |
2188 | mov esi, edi |
2205 | mov esi, edi |
2189 | mov edx, ecx |
2206 | mov edx, ecx |
2190 | sub edi, 0x282000 |
2207 | sub edi, 0x282000 |
2191 | shr edi, 1 |
2208 | shr edi, 1 |
2192 | dec edi ; now edi=new cluster |
2209 | dec edi ; now edi=new cluster |
2193 | test eax, eax |
2210 | test eax, eax |
2194 | jz .first_cluster |
2211 | jz .first_cluster |
2195 | mov [0x282000+eax*2], di |
2212 | mov [0x282000+eax*2], di |
2196 | jmp @f |
2213 | jmp @f |
2197 | .first_cluster: |
2214 | .first_cluster: |
2198 | pop eax ; eax->direntry |
2215 | pop eax ; eax->direntry |
2199 | push eax |
2216 | push eax |
2200 | mov [eax+26], di |
2217 | mov [eax+26], di |
2201 | @@: |
2218 | @@: |
2202 | mov eax, edi ; eax=new cluster |
2219 | mov eax, edi ; eax=new cluster |
2203 | pop edi ; edi->direntry |
2220 | pop edi ; edi->direntry |
2204 | pop ecx ; ecx=required size |
2221 | pop ecx ; ecx=required size |
2205 | add dword [edi+28], 0x200 |
2222 | add dword [edi+28], 0x200 |
2206 | jmp .extend_loop |
2223 | jmp .extend_loop |
2207 | .extend_done: |
2224 | .extend_done: |
2208 | mov [edi+28], ecx |
2225 | mov [edi+28], ecx |
2209 | pop esi edx |
2226 | pop esi edx |
2210 | xor eax, eax ; CF=0 |
2227 | xor eax, eax ; CF=0 |
2211 | ret |
2228 | ret |
2212 | .disk_full: |
2229 | .disk_full: |
2213 | pop edi ecx |
2230 | pop edi ecx |
2214 | pop esi edx |
2231 | pop esi edx |
2215 | stc |
2232 | stc |
2216 | push ERROR_DISK_FULL |
2233 | push ERROR_DISK_FULL |
2217 | pop eax |
2234 | pop eax |
2218 | ret |
2235 | ret |
2219 | 2236 | ||
2220 | ;---------------------------------------------------------------- |
2237 | ;---------------------------------------------------------------- |
2221 | ; |
2238 | ; |
2222 | ; fs_FloppySetFileEnd - set end of file on floppy |
2239 | ; fs_FloppySetFileEnd - set end of file on floppy |
2223 | ; |
2240 | ; |
2224 | ; esi points to filename |
2241 | ; esi points to filename |
2225 | ; ebx points to 64-bit number = new file size |
2242 | ; ebx points to 64-bit number = new file size |
2226 | ; ecx ignored (reserved) |
2243 | ; ecx ignored (reserved) |
2227 | ; edx ignored (reserved) |
2244 | ; edx ignored (reserved) |
2228 | ; |
2245 | ; |
2229 | ; ret eax = 0 ok or other = errormsg |
2246 | ; ret eax = 0 ok or other = errormsg |
2230 | ; |
2247 | ; |
2231 | ;-------------------------------------------------------------- |
2248 | ;-------------------------------------------------------------- |
2232 | fs_FloppySetFileEnd: |
2249 | fs_FloppySetFileEnd: |
2233 | call read_flp_fat |
2250 | call read_flp_fat |
2234 | cmp [FDC_Status], 0 |
2251 | cmp [FDC_Status], 0 |
2235 | jnz ret11 |
2252 | jnz ret11 |
2236 | cmp byte [esi], 0 |
2253 | cmp byte [esi], 0 |
2237 | jnz @f |
2254 | jnz @f |
2238 | .access_denied: |
2255 | .access_denied: |
2239 | push ERROR_ACCESS_DENIED |
2256 | push ERROR_ACCESS_DENIED |
2240 | jmp .ret |
2257 | jmp .ret |
2241 | @@: |
2258 | @@: |
2242 | push edi |
2259 | push edi |
2243 | call fd_find_lfn |
2260 | call fd_find_lfn |
2244 | jnc @f |
2261 | jnc @f |
2245 | pop edi |
2262 | pop edi |
2246 | push ERROR_FILE_NOT_FOUND |
2263 | push ERROR_FILE_NOT_FOUND |
2247 | .ret: |
2264 | .ret: |
2248 | pop eax |
2265 | pop eax |
2249 | jmp .doret |
2266 | jmp .doret |
2250 | @@: |
2267 | @@: |
2251 | ; must not be directory |
2268 | ; must not be directory |
2252 | test byte [edi+11], 10h |
2269 | test byte [edi+11], 10h |
2253 | jz @f |
2270 | jz @f |
2254 | pop edi |
2271 | pop edi |
2255 | jmp .access_denied |
2272 | jmp .access_denied |
2256 | @@: |
2273 | @@: |
2257 | ; file size must not exceed 4 Gb |
2274 | ; file size must not exceed 4 Gb |
2258 | cmp dword [ebx+4], 0 |
2275 | cmp dword [ebx+4], 0 |
2259 | jz @f |
2276 | jz @f |
2260 | pop edi |
2277 | pop edi |
2261 | push ERROR_END_OF_FILE |
2278 | push ERROR_END_OF_FILE |
2262 | jmp .ret |
2279 | jmp .ret |
2263 | @@: |
2280 | @@: |
2264 | push eax |
2281 | push eax |
2265 | ; set file modification date/time to current |
2282 | ; set file modification date/time to current |
2266 | call fat_update_datetime |
2283 | call fat_update_datetime |
2267 | mov eax, [ebx] |
2284 | mov eax, [ebx] |
2268 | cmp eax, [edi+28] |
2285 | cmp eax, [edi+28] |
2269 | jb .truncate |
2286 | jb .truncate |
2270 | ja .expand |
2287 | ja .expand |
2271 | pop eax |
2288 | pop eax |
2272 | pushad |
2289 | pushad |
2273 | call save_chs_sector |
2290 | call save_chs_sector |
2274 | popad |
2291 | popad |
2275 | pop edi |
2292 | pop edi |
2276 | xor eax, eax |
2293 | xor eax, eax |
2277 | cmp [FDC_Status], 0 |
2294 | cmp [FDC_Status], 0 |
2278 | jz @f |
2295 | jz @f |
2279 | mov al, 11 |
2296 | mov al, 11 |
2280 | @@: |
2297 | @@: |
2281 | .doret: |
2298 | .doret: |
2282 | mov [fdc_irq_func], fdc_null |
2299 | mov [fdc_irq_func], fdc_null |
2283 | ret |
2300 | ret |
2284 | .expand: |
2301 | .expand: |
2285 | push ecx |
2302 | push ecx |
2286 | push dword [edi+28] ; save old size |
2303 | push dword [edi+28] ; save old size |
2287 | mov ecx, eax |
2304 | mov ecx, eax |
2288 | call floppy_extend_file |
2305 | call floppy_extend_file |
2289 | push eax ; return code |
2306 | push eax ; return code |
2290 | jnc .expand_ok |
2307 | jnc .expand_ok |
2291 | cmp al, ERROR_DISK_FULL |
2308 | cmp al, ERROR_DISK_FULL |
2292 | jz .disk_full |
2309 | jz .disk_full |
2293 | pop eax ecx ecx edi edi |
2310 | pop eax ecx ecx edi edi |
2294 | jmp .doret |
2311 | jmp .doret |
2295 | .device_err: |
2312 | .device_err: |
2296 | pop eax |
2313 | pop eax |
2297 | .device_err2: |
2314 | .device_err2: |
2298 | pop ecx ecx eax edi |
2315 | pop ecx ecx eax edi |
2299 | push 11 |
2316 | push 11 |
2300 | jmp .ret |
2317 | jmp .ret |
2301 | .disk_full: |
2318 | .disk_full: |
2302 | .expand_ok: |
2319 | .expand_ok: |
2303 | ; save directory & FAT |
2320 | ; save directory & FAT |
2304 | mov eax, [edi+28] |
2321 | mov eax, [edi+28] |
2305 | xchg eax, [esp+12] |
2322 | xchg eax, [esp+12] |
2306 | movzx edi, word [edi+26] |
2323 | movzx edi, word [edi+26] |
2307 | pusha |
2324 | pusha |
2308 | call save_chs_sector |
2325 | call save_chs_sector |
2309 | popa |
2326 | popa |
2310 | cmp [FDC_Status], 0 |
2327 | cmp [FDC_Status], 0 |
2311 | jnz .device_err |
2328 | jnz .device_err |
2312 | call save_flp_fat |
2329 | call save_flp_fat |
2313 | cmp [FDC_Status], 0 |
2330 | cmp [FDC_Status], 0 |
2314 | jnz .device_err |
2331 | jnz .device_err |
2315 | call SetUserInterrupts |
2332 | call SetUserInterrupts |
2316 | ; now zero new data |
2333 | ; now zero new data |
2317 | ; edi = current cluster, [esp+12]=new size, [esp+4]=old size, [esp]=return code |
2334 | ; edi = current cluster, [esp+12]=new size, [esp+4]=old size, [esp]=return code |
2318 | .zero_loop: |
2335 | .zero_loop: |
2319 | sub dword [esp+4], 0x200 |
2336 | sub dword [esp+4], 0x200 |
2320 | jae .next_cluster |
2337 | jae .next_cluster |
2321 | cmp dword [esp+4], -0x200 |
2338 | cmp dword [esp+4], -0x200 |
2322 | jz .noread |
2339 | jz .noread |
2323 | lea eax, [edi+31] |
2340 | lea eax, [edi+31] |
2324 | pusha |
2341 | pusha |
2325 | call read_chs_sector |
2342 | call read_chs_sector |
2326 | popa |
2343 | popa |
2327 | cmp [FDC_Status], 0 |
2344 | cmp [FDC_Status], 0 |
2328 | jnz .err_next |
2345 | jnz .err_next |
2329 | .noread: |
2346 | .noread: |
2330 | mov ecx, [esp+4] |
2347 | mov ecx, [esp+4] |
2331 | neg ecx |
2348 | neg ecx |
2332 | push edi |
2349 | push edi |
2333 | mov edi, 0xD000+0x200 |
2350 | mov edi, 0xD000+0x200 |
2334 | add edi, [esp+8] |
2351 | add edi, [esp+8] |
2335 | xor eax, eax |
2352 | xor eax, eax |
2336 | mov [esp+8], eax |
2353 | mov [esp+8], eax |
2337 | rep stosb |
2354 | rep stosb |
2338 | pop edi |
2355 | pop edi |
2339 | lea eax, [edi+31] |
2356 | lea eax, [edi+31] |
2340 | pusha |
2357 | pusha |
2341 | call save_chs_sector |
2358 | call save_chs_sector |
2342 | popa |
2359 | popa |
2343 | cmp [FDC_Status], 0 |
2360 | cmp [FDC_Status], 0 |
2344 | jz .next_cluster |
2361 | jz .next_cluster |
2345 | .err_next: |
2362 | .err_next: |
2346 | mov byte [esp], 11 |
2363 | mov byte [esp], 11 |
2347 | .next_cluster: |
2364 | .next_cluster: |
2348 | sub dword [esp+12], 0x200 |
2365 | sub dword [esp+12], 0x200 |
2349 | jbe .expand_done |
2366 | jbe .expand_done |
2350 | movzx edi, word [0x282000+edi*2] |
2367 | movzx edi, word [0x282000+edi*2] |
2351 | jmp .zero_loop |
2368 | jmp .zero_loop |
2352 | .expand_done: |
2369 | .expand_done: |
2353 | pop eax ecx ecx edi edi |
2370 | pop eax ecx ecx edi edi |
2354 | jmp .doret |
2371 | jmp .doret |
2355 | .truncate: |
2372 | .truncate: |
2356 | mov [edi+28], eax |
2373 | mov [edi+28], eax |
2357 | push ecx |
2374 | push ecx |
2358 | movzx ecx, word [edi+26] |
2375 | movzx ecx, word [edi+26] |
2359 | test eax, eax |
2376 | test eax, eax |
2360 | jz .zero_size |
2377 | jz .zero_size |
2361 | ; find new last sector |
2378 | ; find new last sector |
2362 | @@: |
2379 | @@: |
2363 | sub eax, 0x200 |
2380 | sub eax, 0x200 |
2364 | jbe @f |
2381 | jbe @f |
2365 | movzx ecx, word [0x282000+ecx*2] |
2382 | movzx ecx, word [0x282000+ecx*2] |
2366 | jmp @b |
2383 | jmp @b |
2367 | @@: |
2384 | @@: |
2368 | ; we will zero data at the end of last sector - remember it |
2385 | ; we will zero data at the end of last sector - remember it |
2369 | push ecx |
2386 | push ecx |
2370 | ; terminate FAT chain |
2387 | ; terminate FAT chain |
2371 | lea ecx, [0x282000+ecx+ecx] |
2388 | lea ecx, [0x282000+ecx+ecx] |
2372 | push dword [ecx] |
2389 | push dword [ecx] |
2373 | mov word [ecx], 0xFFF |
2390 | mov word [ecx], 0xFFF |
2374 | pop ecx |
2391 | pop ecx |
2375 | and ecx, 0xFFF |
2392 | and ecx, 0xFFF |
2376 | jmp .delete |
2393 | jmp .delete |
2377 | .zero_size: |
2394 | .zero_size: |
2378 | and word [edi+26], 0 |
2395 | and word [edi+26], 0 |
2379 | push 0 |
2396 | push 0 |
2380 | .delete: |
2397 | .delete: |
2381 | ; delete FAT chain starting with ecx |
2398 | ; delete FAT chain starting with ecx |
2382 | ; mark all clusters as free |
2399 | ; mark all clusters as free |
2383 | cmp ecx, 0xFF8 |
2400 | cmp ecx, 0xFF8 |
2384 | jae .deleted |
2401 | jae .deleted |
2385 | lea ecx, [0x282000+ecx+ecx] |
2402 | lea ecx, [0x282000+ecx+ecx] |
2386 | push dword [ecx] |
2403 | push dword [ecx] |
2387 | and word [ecx], 0 |
2404 | and word [ecx], 0 |
2388 | pop ecx |
2405 | pop ecx |
2389 | and ecx, 0xFFF |
2406 | and ecx, 0xFFF |
2390 | jmp .delete |
2407 | jmp .delete |
2391 | .deleted: |
2408 | .deleted: |
2392 | mov edi, [edi+28] |
2409 | mov edi, [edi+28] |
2393 | ; save directory & FAT |
2410 | ; save directory & FAT |
2394 | mov eax, [esp+8] |
2411 | mov eax, [esp+8] |
2395 | pusha |
2412 | pusha |
2396 | call save_chs_sector |
2413 | call save_chs_sector |
2397 | popa |
2414 | popa |
2398 | cmp [FDC_Status], 0 |
2415 | cmp [FDC_Status], 0 |
2399 | jnz .device_err2 |
2416 | jnz .device_err2 |
2400 | call save_flp_fat |
2417 | call save_flp_fat |
2401 | cmp [FDC_Status], 0 |
2418 | cmp [FDC_Status], 0 |
2402 | jnz .device_err2 |
2419 | jnz .device_err2 |
2403 | ; zero last sector, ignore errors |
2420 | ; zero last sector, ignore errors |
2404 | pop eax |
2421 | pop eax |
2405 | add eax, 31 |
2422 | add eax, 31 |
2406 | and edi, 0x1FF |
2423 | and edi, 0x1FF |
2407 | jz .truncate_done |
2424 | jz .truncate_done |
2408 | call SetUserInterrupts |
2425 | call SetUserInterrupts |
2409 | pusha |
2426 | pusha |
2410 | call read_chs_sector |
2427 | call read_chs_sector |
2411 | popa |
2428 | popa |
2412 | add edi, 0xD000 |
2429 | add edi, 0xD000 |
2413 | mov ecx, 0xD000+0x200 |
2430 | mov ecx, 0xD000+0x200 |
2414 | sub ecx, edi |
2431 | sub ecx, edi |
2415 | push eax |
2432 | push eax |
2416 | xor eax, eax |
2433 | xor eax, eax |
2417 | rep stosb |
2434 | rep stosb |
2418 | pop eax |
2435 | pop eax |
2419 | pusha |
2436 | pusha |
2420 | call save_chs_sector |
2437 | call save_chs_sector |
2421 | popa |
2438 | popa |
2422 | .truncate_done: |
2439 | .truncate_done: |
2423 | pop ecx eax edi |
2440 | pop ecx eax edi |
2424 | xor eax, eax |
2441 | xor eax, eax |
2425 | jmp .doret |
2442 | jmp .doret |
2426 | 2443 | ||
2427 | fs_FloppyGetFileInfo: |
2444 | fs_FloppyGetFileInfo: |
2428 | call read_flp_fat |
2445 | call read_flp_fat |
2429 | cmp [FDC_Status], 0 |
2446 | cmp [FDC_Status], 0 |
2430 | jnz ret11 |
2447 | jnz ret11 |
2431 | cmp byte [esi], 0 |
2448 | cmp byte [esi], 0 |
2432 | jnz @f |
2449 | jnz @f |
2433 | mov eax, 2 ; unsupported |
2450 | mov eax, 2 ; unsupported |
2434 | ret |
2451 | ret |
2435 | @@: |
2452 | @@: |
2436 | push edi |
2453 | push edi |
2437 | call fd_find_lfn |
2454 | call fd_find_lfn |
2438 | jmp fs_GetFileInfo_finish |
2455 | jmp fs_GetFileInfo_finish |
2439 | 2456 | ||
2440 | ret11: |
2457 | ret11: |
2441 | mov eax, 11 |
2458 | mov eax, 11 |
2442 | ret |
2459 | ret |
2443 | 2460 | ||
2444 | fs_FloppySetFileInfo: |
2461 | fs_FloppySetFileInfo: |
2445 | call read_flp_fat |
2462 | call read_flp_fat |
2446 | cmp [FDC_Status], 0 |
2463 | cmp [FDC_Status], 0 |
2447 | jnz ret11 |
2464 | jnz ret11 |
2448 | cmp byte [esi], 0 |
2465 | cmp byte [esi], 0 |
2449 | jnz @f |
2466 | jnz @f |
2450 | mov eax, 2 ; unsupported |
2467 | mov eax, 2 ; unsupported |
2451 | ret |
2468 | ret |
2452 | @@: |
2469 | @@: |
2453 | push edi |
2470 | push edi |
2454 | call fd_find_lfn |
2471 | call fd_find_lfn |
2455 | jnc @f |
2472 | jnc @f |
2456 | pop edi |
2473 | pop edi |
2457 | mov eax, ERROR_FILE_NOT_FOUND |
2474 | mov eax, ERROR_FILE_NOT_FOUND |
2458 | ret |
2475 | ret |
2459 | @@: |
2476 | @@: |
2460 | push eax |
2477 | push eax |
2461 | call bdfe_to_fat_entry |
2478 | call bdfe_to_fat_entry |
2462 | pop eax |
2479 | pop eax |
2463 | pusha |
2480 | pusha |
2464 | call save_chs_sector |
2481 | call save_chs_sector |
2465 | popa |
2482 | popa |
2466 | pop edi |
2483 | pop edi |
2467 | xor eax, eax |
2484 | xor eax, eax |
2468 | cmp [FDC_Status], 0 |
2485 | cmp [FDC_Status], 0 |
2469 | jz @f |
2486 | jz @f |
2470 | mov al, 11 |
2487 | mov al, 11 |
2471 | @@: |
2488 | @@: |
2472 | ret |
2489 | ret |
2473 | 2490 | ||
2474 | ;---------------------------------------------------------------- |
2491 | ;---------------------------------------------------------------- |
2475 | ; |
2492 | ; |
2476 | ; fs_FloppyExecute - LFN variant for executing from floppy |
2493 | ; fs_FloppyExecute - LFN variant for executing from floppy |
2477 | ; |
2494 | ; |
2478 | ; esi points to floppy filename (e.g. 'dir1/name') |
2495 | ; esi points to floppy filename (e.g. 'dir1/name') |
2479 | ; ebp points to full filename (e.g. '/fd/1/dir1/name') |
2496 | ; ebp points to full filename (e.g. '/fd/1/dir1/name') |
2480 | ; dword [ebx] = flags |
2497 | ; dword [ebx] = flags |
2481 | ; dword [ebx+4] = cmdline |
2498 | ; dword [ebx+4] = cmdline |
2482 | ; |
2499 | ; |
2483 | ; ret ebx,edx destroyed |
2500 | ; ret ebx,edx destroyed |
2484 | ; eax > 0 - PID, < 0 - error |
2501 | ; eax > 0 - PID, < 0 - error |
2485 | ; |
2502 | ; |
2486 | ;-------------------------------------------------------------- |
2503 | ;-------------------------------------------------------------- |
2487 | fs_FloppyExecute: |
2504 | fs_FloppyExecute: |
2488 | mov edx, [ebx] |
2505 | mov edx, [ebx] |
2489 | mov ebx, [ebx+4] |
2506 | mov ebx, [ebx+4] |
2490 | test ebx, ebx |
2507 | test ebx, ebx |
2491 | jz @f |
2508 | jz @f |
2492 | add ebx, std_application_base_address |
2509 | add ebx, std_application_base_address |
2493 | @@: |
2510 | @@: |
2494 | 2511 | ||
2495 | ;---------------------------------------------------------------- |
2512 | ;---------------------------------------------------------------- |
2496 | ; |
2513 | ; |
2497 | ; fs_FloppyExecute.flags - second entry |
2514 | ; fs_FloppyExecute.flags - second entry |
2498 | ; |
2515 | ; |
2499 | ; esi points to floppy filename (kernel address) |
2516 | ; esi points to floppy filename (kernel address) |
2500 | ; ebp points to full filename |
2517 | ; ebp points to full filename |
2501 | ; edx flags |
2518 | ; edx flags |
2502 | ; ebx cmdline (kernel address) |
2519 | ; ebx cmdline (kernel address) |
2503 | ; |
2520 | ; |
2504 | ; ret eax > 0 - PID, < 0 - error |
2521 | ; ret eax > 0 - PID, < 0 - error |
2505 | ; |
2522 | ; |
2506 | ;-------------------------------------------------------------- |
2523 | ;-------------------------------------------------------------- |
2507 | 2524 | ||
2508 | .flags: |
2525 | .flags: |
2509 | call read_flp_fat |
2526 | call read_flp_fat |
2510 | cmp byte [esi], 0 |
2527 | cmp byte [esi], 0 |
2511 | jnz @f |
2528 | jnz @f |
2512 | ; cannot execute root! |
2529 | ; cannot execute root! |
2513 | mov eax, -ERROR_ACCESS_DENIED |
2530 | mov eax, -ERROR_ACCESS_DENIED |
2514 | ret |
2531 | ret |
2515 | @@: |
2532 | @@: |
2516 | push edi |
2533 | push edi |
2517 | call fd_find_lfn |
2534 | call fd_find_lfn |
2518 | jnc .found |
2535 | jnc .found |
2519 | pop edi |
2536 | pop edi |
2520 | mov eax, -ERROR_FILE_NOT_FOUND |
2537 | mov eax, -ERROR_FILE_NOT_FOUND |
2521 | ret |
2538 | ret |
2522 | .found: |
2539 | .found: |
2523 | movzx eax, word [edi+26] ; cluster |
2540 | movzx eax, word [edi+26] ; cluster |
2524 | push eax |
2541 | push eax |
2525 | push dword [edi+28] ; size |
2542 | push dword [edi+28] ; size |
2526 | push .DoRead |
2543 | push .DoRead |
2527 | call fs_execute |
2544 | call fs_execute |
2528 | add esp, 12 |
2545 | add esp, 12 |
2529 | pop edi |
2546 | pop edi |
2530 | ret |
2547 | ret |
2531 | 2548 | ||
2532 | .DoRead: |
2549 | .DoRead: |
2533 | ; read next block |
2550 | ; read next block |
2534 | ; in: eax->parameters, edi->buffer |
2551 | ; in: eax->parameters, edi->buffer |
2535 | ; out: eax = error code |
2552 | ; out: eax = error code |
2536 | pushad |
2553 | pushad |
2537 | cmp dword [eax], 0 ; file size |
2554 | cmp dword [eax], 0 ; file size |
2538 | jz .eof |
2555 | jz .eof |
2539 | mov eax, [eax+4] ; cluster |
2556 | mov eax, [eax+4] ; cluster |
2540 | add eax, 31 |
2557 | add eax, 31 |
2541 | call read_chs_sector |
2558 | call read_chs_sector |
2542 | cmp [FDC_Status], 0 |
2559 | cmp [FDC_Status], 0 |
2543 | jnz .err |
2560 | jnz .err |
2544 | pop edi |
2561 | pop edi |
2545 | mov esi, 0xD000 |
2562 | mov esi, 0xD000 |
2546 | push edi |
2563 | push edi |
2547 | mov ecx, 512/4 |
2564 | mov ecx, 512/4 |
2548 | rep movsd |
2565 | rep movsd |
2549 | mov eax, [esp+28] |
2566 | mov eax, [esp+28] |
2550 | mov ecx, [eax] |
2567 | mov ecx, [eax] |
2551 | sub ecx, 512 |
2568 | sub ecx, 512 |
2552 | jae @f |
2569 | jae @f |
2553 | add edi, ecx |
2570 | add edi, ecx |
2554 | neg ecx |
2571 | neg ecx |
2555 | push eax |
2572 | push eax |
2556 | xor eax, eax |
2573 | xor eax, eax |
2557 | rep stosb |
2574 | rep stosb |
2558 | pop eax |
2575 | pop eax |
2559 | @@: |
2576 | @@: |
2560 | mov [eax], ecx |
2577 | mov [eax], ecx |
2561 | mov edx, [eax+4] |
2578 | mov edx, [eax+4] |
2562 | mov dx, [edx*2+0x282000] |
2579 | mov dx, [edx*2+0x282000] |
2563 | mov [eax+4], dx ; high word is already zero |
2580 | mov [eax+4], dx ; high word is already zero |
2564 | popad |
2581 | popad |
2565 | xor eax, eax |
2582 | xor eax, eax |
2566 | ret |
2583 | ret |
2567 | .eof: |
2584 | .eof: |
2568 | popad |
2585 | popad |
2569 | mov eax, 6 |
2586 | mov eax, 6 |
2570 | ret |
2587 | ret |
2571 | .err: |
2588 | .err: |
2572 | popad |
2589 | popad |
2573 | mov eax, 11 |
2590 | mov eax, 11 |
2574 | ret |
2591 | ret |
- | 2592 | ||
- | 2593 | ;---------------------------------------------------------------- |
|
- | 2594 | ; |
|
- | 2595 | ; fs_FloppyDelete - delete file or empty folder from floppy |
|
- | 2596 | ; |
|
- | 2597 | ; esi points to filename |
|
- | 2598 | ; |
|
- | 2599 | ; ret eax = 0 ok or other = errormsg |
|
- | 2600 | ; |
|
- | 2601 | ;-------------------------------------------------------------- |
|
- | 2602 | fs_FloppyDelete: |
|
- | 2603 | call read_flp_fat |
|
- | 2604 | cmp [FDC_Status], 0 |
|
- | 2605 | jz @f |
|
- | 2606 | push 11 |
|
- | 2607 | jmp .pop_ret |
|
- | 2608 | @@: |
|
- | 2609 | cmp byte [esi], 0 |
|
- | 2610 | jnz @f |
|
- | 2611 | ; cannot delete root! |
|
- | 2612 | .access_denied: |
|
- | 2613 | push ERROR_ACCESS_DENIED |
|
- | 2614 | .pop_ret: |
|
- | 2615 | pop eax |
|
- | 2616 | ret |
|
- | 2617 | @@: |
|
- | 2618 | and [fd_prev_sector], 0 |
|
- | 2619 | and [fd_prev_prev_sector], 0 |
|
- | 2620 | push edi |
|
- | 2621 | call fd_find_lfn |
|
- | 2622 | jnc .found |
|
- | 2623 | pop edi |
|
- | 2624 | push ERROR_FILE_NOT_FOUND |
|
- | 2625 | jmp .pop_ret |
|
- | 2626 | .found: |
|
- | 2627 | cmp dword [edi], '. ' |
|
- | 2628 | jz .access_denied2 |
|
- | 2629 | cmp dword [edi], '.. ' |
|
- | 2630 | jz .access_denied2 |
|
- | 2631 | test byte [edi+11], 10h |
|
- | 2632 | jz .dodel |
|
- | 2633 | ; we can delete only empty folders! |
|
- | 2634 | push eax |
|
- | 2635 | movzx eax, word [edi+26] |
|
- | 2636 | push ebx |
|
- | 2637 | pusha |
|
- | 2638 | add eax, 31 |
|
- | 2639 | call read_chs_sector |
|
- | 2640 | popa |
|
- | 2641 | mov ebx, FDD_DATA + 2*0x20 |
|
- | 2642 | .checkempty: |
|
- | 2643 | cmp byte [ebx], 0 |
|
- | 2644 | jz .empty |
|
- | 2645 | cmp byte [ebx], 0xE5 |
|
- | 2646 | jnz .notempty |
|
- | 2647 | add ebx, 0x20 |
|
- | 2648 | cmp ebx, FDD_DATA + 0x200 |
|
- | 2649 | jb .checkempty |
|
- | 2650 | movzx eax, word [FLOPPY_FAT + eax*2] |
|
- | 2651 | pusha |
|
- | 2652 | add eax, 31 |
|
- | 2653 | call read_chs_sector |
|
- | 2654 | popa |
|
- | 2655 | mov ebx, FDD_DATA |
|
- | 2656 | jmp .checkempty |
|
- | 2657 | .notempty: |
|
- | 2658 | pop ebx |
|
- | 2659 | pop eax |
|
- | 2660 | .access_denied2: |
|
- | 2661 | pop edi |
|
- | 2662 | jmp .access_denied |
|
- | 2663 | .empty: |
|
- | 2664 | pop ebx |
|
- | 2665 | pop eax |
|
- | 2666 | pusha |
|
- | 2667 | call read_chs_sector |
|
- | 2668 | popa |
|
- | 2669 | .dodel: |
|
- | 2670 | push eax |
|
- | 2671 | movzx eax, word [edi+26] |
|
- | 2672 | xchg eax, [esp] |
|
- | 2673 | ; delete folder entry |
|
- | 2674 | mov byte [edi], 0xE5 |
|
- | 2675 | ; delete LFN (if present) |
|
- | 2676 | .lfndel: |
|
- | 2677 | cmp edi, FDD_DATA |
|
- | 2678 | ja @f |
|
- | 2679 | cmp [fd_prev_sector], 0 |
|
- | 2680 | jz .lfndone |
|
- | 2681 | push [fd_prev_sector] |
|
- | 2682 | push [fd_prev_prev_sector] |
|
- | 2683 | pop [fd_prev_sector] |
|
- | 2684 | and [fd_prev_prev_sector], 0 |
|
- | 2685 | pusha |
|
- | 2686 | call save_chs_sector |
|
- | 2687 | popa |
|
- | 2688 | pop eax |
|
- | 2689 | pusha |
|
- | 2690 | call read_chs_sector |
|
- | 2691 | popa |
|
- | 2692 | mov edi, FDD_DATA+0x200 |
|
- | 2693 | @@: |
|
- | 2694 | sub edi, 0x20 |
|
- | 2695 | cmp byte [edi], 0xE5 |
|
- | 2696 | jz .lfndone |
|
- | 2697 | cmp byte [edi+11], 0xF |
|
- | 2698 | jnz .lfndone |
|
- | 2699 | mov byte [edi], 0xE5 |
|
- | 2700 | jmp .lfndel |
|
- | 2701 | .lfndone: |
|
- | 2702 | pusha |
|
- | 2703 | call save_chs_sector |
|
- | 2704 | popa |
|
- | 2705 | ; delete FAT chain |
|
- | 2706 | pop eax |
|
- | 2707 | test eax, eax |
|
- | 2708 | jz .done |
|
- | 2709 | @@: |
|
- | 2710 | lea eax, [FLOPPY_FAT + eax*2] |
|
- | 2711 | push dword [eax] |
|
- | 2712 | and word [eax], 0 |
|
- | 2713 | pop eax |
|
- | 2714 | and eax, 0xFFF |
|
- | 2715 | jnz @b |
|
- | 2716 | .done: |
|
- | 2717 | call save_flp_fat |
|
- | 2718 | pop edi |
|
- | 2719 | xor eax, eax |
|
- | 2720 | ret |
|
2575 | 2721 | ||
2576 | ; \end{diamond}>>=>=>->->->-> |
2722 | ; \end{diamond}>>=>=>->->->-> |