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1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
2 | ;; ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
5 | ;; ;; |
6 | ;; FAT12.INC ;; |
6 | ;; FAT12.INC ;; |
7 | ;; (C) 2005 Mario79, License: GPL ;; |
7 | ;; (C) 2005 Mario79, License: GPL ;; |
8 | ;; ;; |
8 | ;; ;; |
9 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
9 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
10 | 10 | ||
11 | $Revision: 3626 $ |
11 | $Revision: 3908 $ |
12 | 12 | ||
13 | 13 | ||
14 | n_sector dd 0 ; temporary save for sector value |
14 | n_sector dd 0 ; temporary save for sector value |
15 | flp_status dd 0 |
15 | flp_status dd 0 |
16 | clust_tmp_flp dd 0 ; used by analyze_directory and analyze_directory_to_write |
16 | clust_tmp_flp dd 0 ; used by analyze_directory and analyze_directory_to_write |
17 | path_pointer_flp dd 0 |
17 | path_pointer_flp dd 0 |
18 | pointer_file_name_flp dd 0 |
18 | pointer_file_name_flp dd 0 |
19 | save_root_flag db 0 |
19 | save_root_flag db 0 |
20 | save_flag db 0 |
20 | save_flag db 0 |
21 | root_read db 0 ; 0-necessary to load root, 1-not to load root |
21 | root_read db 0 ; 0-necessary to load root, 1-not to load root |
22 | flp_fat db 0 ; 0-necessary to load fat, 1-not to load fat |
22 | flp_fat db 0 ; 0-necessary to load fat, 1-not to load fat |
23 | flp_number db 0 ; 1- Floppy A, 2-Floppy B |
23 | flp_number db 0 ; 1- Floppy A, 2-Floppy B |
24 | old_track db 0 ; old value track |
24 | old_track db 0 ; old value track |
25 | flp_label rb 15 ; Label and ID of inserted floppy disk |
25 | flp_label rb 15 ; Label and ID of inserted floppy disk |
26 | 26 | ||
27 | reserve_flp: |
27 | reserve_flp: |
28 | 28 | ||
29 | cli |
29 | cli |
30 | cmp [flp_status], 0 |
30 | cmp [flp_status], 0 |
31 | je reserve_flp_ok |
31 | je reserve_flp_ok |
32 | 32 | ||
33 | sti |
33 | sti |
34 | call change_task |
34 | call change_task |
35 | jmp reserve_flp |
35 | jmp reserve_flp |
36 | 36 | ||
37 | reserve_flp_ok: |
37 | reserve_flp_ok: |
38 | 38 | ||
39 | push eax |
39 | push eax |
40 | mov eax, [CURRENT_TASK] |
40 | mov eax, [CURRENT_TASK] |
41 | shl eax, 5 |
41 | shl eax, 5 |
42 | mov eax, [eax+CURRENT_TASK+TASKDATA.pid] |
42 | mov eax, [eax+CURRENT_TASK+TASKDATA.pid] |
43 | mov [flp_status], eax |
43 | mov [flp_status], eax |
44 | pop eax |
44 | pop eax |
45 | sti |
45 | sti |
46 | ret |
46 | ret |
47 | 47 | ||
48 | 48 | ||
49 | floppy_fileread: |
49 | floppy_fileread: |
50 | ;---------------------------------------------------------------- |
50 | ;---------------------------------------------------------------- |
51 | ; |
51 | ; |
52 | ; fileread - sys floppy |
52 | ; fileread - sys floppy |
53 | ; |
53 | ; |
54 | ; eax points to filename 11 chars - for root directory |
54 | ; eax points to filename 11 chars - for root directory |
55 | ; ebx first wanted block ; 1+ ; if 0 then set to 1 |
55 | ; ebx first wanted block ; 1+ ; if 0 then set to 1 |
56 | ; ecx number of blocks to read ; 1+ ; if 0 then set to 1 |
56 | ; ecx number of blocks to read ; 1+ ; if 0 then set to 1 |
57 | ; edx mem location to return data |
57 | ; edx mem location to return data |
58 | ; esi length of filename 12*X |
58 | ; esi length of filename 12*X |
59 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
59 | ; edi pointer to path /fd/1/...... - for all files in nested directories |
60 | ; |
60 | ; |
61 | ; ret ebx = size or 0xffffffff file not found |
61 | ; ret ebx = size or 0xffffffff file not found |
62 | ; eax = 0 ok read or other = errormsg |
62 | ; eax = 0 ok read or other = errormsg |
63 | ; 10 = access denied |
63 | ; 10 = access denied |
64 | ;-------------------------------------------------------------- |
64 | ;-------------------------------------------------------------- |
65 | 65 | ||
66 | mov [save_flag], 0 |
66 | mov [save_flag], 0 |
67 | mov [path_pointer_flp], edi |
67 | mov [path_pointer_flp], edi |
68 | test esi, esi ; return ramdisk root |
68 | test esi, esi ; return ramdisk root |
69 | jnz fr_noroot_1 |
69 | jnz fr_noroot_1 |
70 | cmp ebx, 224/16 |
70 | cmp ebx, 224/16 |
71 | jbe fr_do_1 |
71 | jbe fr_do_1 |
72 | mov eax, 5 |
72 | mov eax, 5 |
73 | xor ebx, ebx |
73 | xor ebx, ebx |
74 | mov [flp_status], ebx |
74 | mov [flp_status], ebx |
75 | ret |
75 | ret |
76 | 76 | ||
77 | fr_do_1: |
77 | fr_do_1: |
78 | push ebx ecx edx |
78 | push ebx ecx edx |
79 | call read_flp_root |
79 | call read_flp_root |
80 | pop edx ecx ebx |
80 | pop edx ecx ebx |
81 | cmp [FDC_Status], 0 |
81 | cmp [FDC_Status], 0 |
82 | jne fdc_status_error_1 |
82 | jne fdc_status_error_1 |
83 | mov edi, edx |
83 | mov edi, edx |
84 | dec ebx |
84 | dec ebx |
85 | shl ebx, 9 |
85 | shl ebx, 9 |
86 | mov esi, FLOPPY_BUFF |
86 | mov esi, FLOPPY_BUFF |
87 | add esi, ebx |
87 | add esi, ebx |
88 | shl ecx, 9 |
88 | shl ecx, 9 |
89 | cld |
89 | cld |
90 | rep movsb |
90 | rep movsb |
91 | xor eax, eax |
91 | xor eax, eax |
92 | xor ebx, ebx |
92 | xor ebx, ebx |
93 | ; mov eax,0 ; ok read |
93 | ; mov eax,0 ; ok read |
94 | ; mov ebx,0 |
94 | ; mov ebx,0 |
95 | mov [flp_status], eax |
95 | mov [flp_status], eax |
96 | ret |
96 | ret |
97 | fdc_status_error_1: |
97 | fdc_status_error_1: |
98 | xor eax, eax |
98 | xor eax, eax |
99 | mov [flp_status], eax |
99 | mov [flp_status], eax |
100 | mov eax, 10 |
100 | mov eax, 10 |
101 | or ebx, -1 |
101 | or ebx, -1 |
102 | ret |
102 | ret |
103 | 103 | ||
104 | fr_noroot_1: |
104 | fr_noroot_1: |
105 | sub esp, 32 |
105 | sub esp, 32 |
106 | call expand_filename |
106 | call expand_filename |
107 | frfloppy_1: |
107 | frfloppy_1: |
108 | test ebx, ebx |
108 | test ebx, ebx |
109 | jnz frfl5_1 |
109 | jnz frfl5_1 |
110 | mov ebx, 1 |
110 | mov ebx, 1 |
111 | frfl5_1: |
111 | frfl5_1: |
112 | test ecx, ecx |
112 | test ecx, ecx |
113 | jnz frfl6_1 |
113 | jnz frfl6_1 |
114 | mov ecx, 1 |
114 | mov ecx, 1 |
115 | frfl6_1: |
115 | frfl6_1: |
116 | dec ebx |
116 | dec ebx |
117 | push eax |
117 | push eax |
118 | push eax ebx ecx edx esi edi |
118 | push eax ebx ecx edx esi edi |
119 | call read_flp_fat |
119 | call read_flp_fat |
120 | cmp [FDC_Status], 0 |
120 | cmp [FDC_Status], 0 |
121 | jne fdc_status_error_3_1 |
121 | jne fdc_status_error_3_1 |
122 | mov [FDD_Track], 0; Цилиндр |
122 | mov [FDD_Track], 0; Цилиндр |
123 | mov [FDD_Head], 1; Сторона |
123 | mov [FDD_Head], 1; Сторона |
124 | mov [FDD_Sector], 2; Сектор |
124 | mov [FDD_Sector], 2; Сектор |
125 | call SeekTrack |
125 | call SeekTrack |
126 | mov dh, 14 |
126 | mov dh, 14 |
127 | l.20_1: |
127 | l.20_1: |
128 | call ReadSectWithRetr |
128 | call ReadSectWithRetr |
129 | cmp [FDC_Status], 0 |
129 | cmp [FDC_Status], 0 |
130 | jne fdc_status_error_3_1 |
130 | jne fdc_status_error_3_1 |
131 | mov dl, 16 |
131 | mov dl, 16 |
132 | mov edi, FDD_BUFF |
132 | mov edi, FDD_BUFF |
133 | inc [FDD_Sector] |
133 | inc [FDD_Sector] |
134 | l.21_1: |
134 | l.21_1: |
135 | mov esi, eax ;Name of file we want |
135 | mov esi, eax ;Name of file we want |
136 | mov ecx, 11 |
136 | mov ecx, 11 |
137 | cld |
137 | cld |
138 | rep cmpsb ;Found the file? |
138 | rep cmpsb ;Found the file? |
139 | je fifound_1 ;Yes |
139 | je fifound_1 ;Yes |
140 | add ecx, 21 |
140 | add ecx, 21 |
141 | add edi, ecx ;Advance to next entry |
141 | add edi, ecx ;Advance to next entry |
142 | dec dl |
142 | dec dl |
143 | test dl, dl |
143 | test dl, dl |
144 | jnz l.21_1 |
144 | jnz l.21_1 |
145 | dec dh |
145 | dec dh |
146 | test dh, dh |
146 | test dh, dh |
147 | jnz l.20_1 |
147 | jnz l.20_1 |
148 | fdc_status_error_3: |
148 | fdc_status_error_3: |
149 | mov eax, 5 ; file not found ? |
149 | mov eax, 5 ; file not found ? |
150 | or ebx, -1 |
150 | or ebx, -1 |
151 | add esp, 32+28 |
151 | add esp, 32+28 |
152 | mov [flp_status], 0 |
152 | mov [flp_status], 0 |
153 | ret |
153 | ret |
154 | fdc_status_error_3_2: |
154 | fdc_status_error_3_2: |
155 | cmp [FDC_Status], 0 |
155 | cmp [FDC_Status], 0 |
156 | je fdc_status_error_3 |
156 | je fdc_status_error_3 |
157 | fdc_status_error_3_1: |
157 | fdc_status_error_3_1: |
158 | add esp, 32+28 |
158 | add esp, 32+28 |
159 | jmp fdc_status_error_1 |
159 | jmp fdc_status_error_1 |
160 | 160 | ||
161 | fifound_1: |
161 | fifound_1: |
162 | mov eax, [path_pointer_flp] |
162 | mov eax, [path_pointer_flp] |
163 | cmp [eax+36], byte 0 |
163 | cmp [eax+36], byte 0 |
164 | je fifound_2 |
164 | je fifound_2 |
165 | add edi, 0xf |
165 | add edi, 0xf |
166 | mov eax, [edi] |
166 | mov eax, [edi] |
167 | and eax, 65535 |
167 | and eax, 65535 |
168 | mov ebx, [path_pointer_flp] |
168 | mov ebx, [path_pointer_flp] |
169 | add ebx, 36 |
169 | add ebx, 36 |
170 | call get_cluster_of_a_path_flp |
170 | call get_cluster_of_a_path_flp |
171 | jc fdc_status_error_3_2 |
171 | jc fdc_status_error_3_2 |
172 | mov ebx, [ebx-11+28] ;file size |
172 | mov ebx, [ebx-11+28] ;file size |
173 | mov [esp+20], ebx |
173 | mov [esp+20], ebx |
174 | mov [esp+24], ebx |
174 | mov [esp+24], ebx |
175 | jmp fifound_3 |
175 | jmp fifound_3 |
176 | fifound_2: |
176 | fifound_2: |
177 | mov ebx, [edi-11+28] ;file size |
177 | mov ebx, [edi-11+28] ;file size |
178 | mov [esp+20], ebx |
178 | mov [esp+20], ebx |
179 | mov [esp+24], ebx |
179 | mov [esp+24], ebx |
180 | add edi, 0xf |
180 | add edi, 0xf |
181 | mov eax, [edi] |
181 | mov eax, [edi] |
182 | fifound_3: |
182 | fifound_3: |
183 | and eax, 65535 |
183 | and eax, 65535 |
184 | mov [n_sector], eax ;eax=cluster |
184 | mov [n_sector], eax ;eax=cluster |
185 | frnew_1: |
185 | frnew_1: |
186 | add eax, 31 ;bootsector+2*fat+filenames |
186 | add eax, 31 ;bootsector+2*fat+filenames |
187 | cmp [esp+16], dword 0; wanted cluster ? |
187 | cmp [esp+16], dword 0; wanted cluster ? |
188 | jne frfl7_1 |
188 | jne frfl7_1 |
189 | call read_chs_sector |
189 | call read_chs_sector |
190 | cmp [FDC_Status], 0 |
190 | cmp [FDC_Status], 0 |
191 | jne fdc_status_error_5 |
191 | jne fdc_status_error_5 |
192 | mov edi, [esp+8] |
192 | mov edi, [esp+8] |
193 | call give_back_application_data_1 |
193 | call give_back_application_data_1 |
194 | add [esp+8], dword 512 |
194 | add [esp+8], dword 512 |
195 | dec dword [esp+12] ; last wanted cluster ? |
195 | dec dword [esp+12] ; last wanted cluster ? |
196 | cmp [esp+12], dword 0 |
196 | cmp [esp+12], dword 0 |
197 | je frnoread_1 |
197 | je frnoread_1 |
198 | jmp frfl8_1 |
198 | jmp frfl8_1 |
199 | frfl7_1: |
199 | frfl7_1: |
200 | dec dword [esp+16] |
200 | dec dword [esp+16] |
201 | frfl8_1: |
201 | frfl8_1: |
202 | mov edi, [n_sector] |
202 | mov edi, [n_sector] |
203 | shl edi, 1 ;find next cluster from FAT |
203 | shl edi, 1 ;find next cluster from FAT |
204 | add edi, FLOPPY_FAT |
204 | add edi, FLOPPY_FAT |
205 | mov eax, [edi] |
205 | mov eax, [edi] |
206 | and eax, 4095 |
206 | and eax, 4095 |
207 | mov edi, eax |
207 | mov edi, eax |
208 | mov [n_sector], edi |
208 | mov [n_sector], edi |
209 | cmp edi, 4095 ;eof - cluster |
209 | cmp edi, 4095 ;eof - cluster |
210 | jz frnoread2_1 |
210 | jz frnoread2_1 |
211 | cmp [esp+24], dword 512;eof - size |
211 | cmp [esp+24], dword 512;eof - size |
212 | jb frnoread_1 |
212 | jb frnoread_1 |
213 | sub [esp+24], dword 512 |
213 | sub [esp+24], dword 512 |
214 | jmp frnew_1 |
214 | jmp frnew_1 |
215 | 215 | ||
216 | read_chs_sector: |
216 | read_chs_sector: |
217 | call calculate_chs |
217 | call calculate_chs |
218 | call ReadSectWithRetr |
218 | call ReadSectWithRetr |
219 | ret |
219 | ret |
220 | 220 | ||
221 | frnoread2_1: |
221 | frnoread2_1: |
222 | cmp [esp+16], dword 0; eof without read ? |
222 | cmp [esp+16], dword 0; eof without read ? |
223 | je frnoread_1 |
223 | je frnoread_1 |
224 | mov [fdc_irq_func], fdc_null |
- | |
- | 224 | ||
225 | pop edi esi edx ecx |
225 | pop edi esi edx ecx |
226 | add esp, 4 |
226 | add esp, 4 |
227 | pop ebx; ebx <- eax : size of file |
227 | pop ebx; ebx <- eax : size of file |
228 | add esp, 36 |
228 | add esp, 36 |
229 | mov eax, 6; end of file |
229 | mov eax, 6; end of file |
230 | mov [flp_status], 0 |
230 | mov [flp_status], 0 |
231 | ret |
231 | ret |
232 | 232 | ||
233 | frnoread_1: |
233 | frnoread_1: |
234 | pop edi esi edx ecx |
234 | pop edi esi edx ecx |
235 | add esp, 4 |
235 | add esp, 4 |
236 | pop ebx; ebx <- eax : size of file |
236 | pop ebx; ebx <- eax : size of file |
237 | add esp, 36 |
237 | add esp, 36 |
238 | xor eax, eax |
238 | xor eax, eax |
239 | mov [flp_status], eax |
239 | mov [flp_status], eax |
240 | ret |
240 | ret |
241 | 241 | ||
242 | fdc_status_error_5: |
242 | fdc_status_error_5: |
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 | jmp fdc_status_error_1 |
247 | jmp fdc_status_error_1 |
248 | 248 | ||
249 | read_flp_root: |
249 | read_flp_root: |
250 | pusha |
250 | pusha |
251 | call check_label |
251 | call check_label |
252 | cmp [FDC_Status], 0 |
252 | cmp [FDC_Status], 0 |
253 | jne unnecessary_root_read |
253 | jne unnecessary_root_read |
254 | cmp [root_read], 1 |
254 | cmp [root_read], 1 |
255 | je unnecessary_root_read |
255 | je unnecessary_root_read |
256 | mov [FDD_Track], 0; Цилиндр |
256 | mov [FDD_Track], 0; Цилиндр |
257 | mov [FDD_Head], 1; Сторона |
257 | mov [FDD_Head], 1; Сторона |
258 | mov [FDD_Sector], 2; Сектор |
258 | mov [FDD_Sector], 2; Сектор |
259 | mov edi, FLOPPY_BUFF |
259 | mov edi, FLOPPY_BUFF |
260 | call SeekTrack |
260 | call SeekTrack |
261 | read_flp_root_1: |
261 | read_flp_root_1: |
262 | call ReadSectWithRetr |
262 | call ReadSectWithRetr |
263 | cmp [FDC_Status], 0 |
263 | cmp [FDC_Status], 0 |
264 | jne unnecessary_root_read |
264 | jne unnecessary_root_read |
265 | push edi |
265 | push edi |
266 | call give_back_application_data_1 |
266 | call give_back_application_data_1 |
267 | pop edi |
267 | pop edi |
268 | add edi, 512 |
268 | add edi, 512 |
269 | inc [FDD_Sector] |
269 | inc [FDD_Sector] |
270 | cmp [FDD_Sector], 16 |
270 | cmp [FDD_Sector], 16 |
271 | jne read_flp_root_1 |
271 | jne read_flp_root_1 |
272 | mov [root_read], 1 |
272 | mov [root_read], 1 |
273 | unnecessary_root_read: |
273 | unnecessary_root_read: |
274 | popa |
274 | popa |
275 | ret |
275 | ret |
276 | 276 | ||
277 | 277 | ||
278 | read_flp_fat: |
278 | read_flp_fat: |
279 | pusha |
279 | pusha |
280 | call check_label |
280 | call check_label |
281 | cmp [FDC_Status], 0 |
281 | cmp [FDC_Status], 0 |
282 | jne unnecessary_flp_fat |
282 | jne unnecessary_flp_fat |
283 | cmp [flp_fat], 1 |
283 | cmp [flp_fat], 1 |
284 | je unnecessary_flp_fat |
284 | je unnecessary_flp_fat |
285 | mov [FDD_Track], 0; Цилиндр |
285 | mov [FDD_Track], 0; Цилиндр |
286 | mov [FDD_Head], 0; Сторона |
286 | mov [FDD_Head], 0; Сторона |
287 | mov [FDD_Sector], 2; Сектор |
287 | mov [FDD_Sector], 2; Сектор |
288 | mov edi, FLOPPY_BUFF |
288 | mov edi, FLOPPY_BUFF |
289 | call SeekTrack |
289 | call SeekTrack |
290 | read_flp_fat_1: |
290 | read_flp_fat_1: |
291 | call ReadSectWithRetr |
291 | call ReadSectWithRetr |
292 | cmp [FDC_Status], 0 |
292 | cmp [FDC_Status], 0 |
293 | jne unnecessary_flp_fat |
293 | jne unnecessary_flp_fat |
294 | push edi |
294 | push edi |
295 | call give_back_application_data_1 |
295 | call give_back_application_data_1 |
296 | pop edi |
296 | pop edi |
297 | add edi, 512 |
297 | add edi, 512 |
298 | inc [FDD_Sector] |
298 | inc [FDD_Sector] |
299 | cmp [FDD_Sector], 19 |
299 | cmp [FDD_Sector], 19 |
300 | jne read_flp_fat_1 |
300 | jne read_flp_fat_1 |
301 | mov [FDD_Sector], 1 |
301 | mov [FDD_Sector], 1 |
302 | mov [FDD_Head], 1 |
302 | mov [FDD_Head], 1 |
303 | call ReadSectWithRetr |
303 | call ReadSectWithRetr |
304 | cmp [FDC_Status], 0 |
304 | cmp [FDC_Status], 0 |
305 | jne unnecessary_flp_fat |
305 | jne unnecessary_flp_fat |
306 | call give_back_application_data_1 |
306 | call give_back_application_data_1 |
307 | call calculatefatchain_flp |
307 | call calculatefatchain_flp |
308 | mov [root_read], 0 |
308 | mov [root_read], 0 |
309 | mov [flp_fat], 1 |
309 | mov [flp_fat], 1 |
310 | unnecessary_flp_fat: |
310 | unnecessary_flp_fat: |
311 | popa |
311 | popa |
312 | ret |
312 | ret |
313 | 313 | ||
314 | calculatefatchain_flp: |
314 | calculatefatchain_flp: |
315 | pushad |
315 | pushad |
316 | 316 | ||
317 | mov esi, FLOPPY_BUFF |
317 | mov esi, FLOPPY_BUFF |
318 | mov edi, FLOPPY_FAT |
318 | mov edi, FLOPPY_FAT |
319 | 319 | ||
320 | fcnew_1: |
320 | fcnew_1: |
321 | mov eax, dword [esi] |
321 | mov eax, dword [esi] |
322 | mov ebx, dword [esi+4] |
322 | mov ebx, dword [esi+4] |
323 | mov ecx, dword [esi+8] |
323 | mov ecx, dword [esi+8] |
324 | mov edx, ecx |
324 | mov edx, ecx |
325 | shr edx, 4;8 ok |
325 | shr edx, 4;8 ok |
326 | shr dx, 4;7 ok |
326 | shr dx, 4;7 ok |
327 | xor ch, ch |
327 | xor ch, ch |
328 | shld ecx, ebx, 20;6 ok |
328 | shld ecx, ebx, 20;6 ok |
329 | shr cx, 4;5 ok |
329 | shr cx, 4;5 ok |
330 | shld ebx, eax, 12 |
330 | shld ebx, eax, 12 |
331 | and ebx, 0x0fffffff;4 ok |
331 | and ebx, 0x0fffffff;4 ok |
332 | shr bx, 4;3 ok |
332 | shr bx, 4;3 ok |
333 | shl eax, 4 |
333 | shl eax, 4 |
334 | and eax, 0x0fffffff;2 ok |
334 | and eax, 0x0fffffff;2 ok |
335 | shr ax, 4;1 ok |
335 | shr ax, 4;1 ok |
336 | mov dword [edi], eax |
336 | mov dword [edi], eax |
337 | add edi, 4 |
337 | add edi, 4 |
338 | mov dword [edi], ebx |
338 | mov dword [edi], ebx |
339 | add edi, 4 |
339 | add edi, 4 |
340 | mov dword [edi], ecx |
340 | mov dword [edi], ecx |
341 | add edi, 4 |
341 | add edi, 4 |
342 | mov dword [edi], edx |
342 | mov dword [edi], edx |
343 | add edi, 4 |
343 | add edi, 4 |
344 | add esi, 12 |
344 | add esi, 12 |
345 | 345 | ||
346 | cmp edi, FLOPPY_FAT+2856*2;2849 clusters |
346 | cmp edi, FLOPPY_FAT+2856*2;2849 clusters |
347 | jnz fcnew_1 |
347 | jnz fcnew_1 |
348 | 348 | ||
349 | popad |
349 | popad |
350 | ret |
350 | ret |
351 | 351 | ||
352 | check_label: |
352 | check_label: |
353 | pushad |
353 | pushad |
354 | mov [FDD_Track], 0; Цилиндр |
354 | mov [FDD_Track], 0; Цилиндр |
355 | mov [FDD_Head], 0; Сторона |
355 | mov [FDD_Head], 0; Сторона |
356 | mov [FDD_Sector], 1; Сектор |
356 | mov [FDD_Sector], 1; Сектор |
357 | call SetUserInterrupts |
- | |
358 | call FDDMotorON |
357 | call FDDMotorON |
359 | call RecalibrateFDD |
358 | call RecalibrateFDD |
360 | cmp [FDC_Status], 0 |
359 | cmp [FDC_Status], 0 |
361 | jne fdc_status_error |
360 | jne fdc_status_error |
362 | call SeekTrack |
361 | call SeekTrack |
363 | cmp [FDC_Status], 0 |
362 | cmp [FDC_Status], 0 |
364 | jne fdc_status_error |
363 | jne fdc_status_error |
365 | call ReadSectWithRetr |
364 | call ReadSectWithRetr |
366 | cmp [FDC_Status], 0 |
365 | cmp [FDC_Status], 0 |
367 | jne fdc_status_error |
366 | jne fdc_status_error |
368 | mov esi, flp_label |
367 | mov esi, flp_label |
369 | mov edi, FDD_BUFF+39 |
368 | mov edi, FDD_BUFF+39 |
370 | mov ecx, 15 |
369 | mov ecx, 15 |
371 | cld |
370 | cld |
372 | rep cmpsb |
371 | rep cmpsb |
373 | je same_label |
372 | je same_label |
374 | mov [root_read], 0 |
373 | mov [root_read], 0 |
375 | mov [flp_fat], 0 |
374 | mov [flp_fat], 0 |
376 | same_label: |
375 | same_label: |
377 | mov esi, FDD_BUFF+39 |
376 | mov esi, FDD_BUFF+39 |
378 | mov edi, flp_label |
377 | mov edi, flp_label |
379 | mov ecx, 15 |
378 | mov ecx, 15 |
380 | cld |
379 | cld |
381 | rep movsb |
380 | rep movsb |
382 | popad |
381 | popad |
383 | ret |
382 | ret |
384 | fdc_status_error: |
383 | fdc_status_error: |
385 | popad |
384 | popad |
386 | ret |
385 | ret |
387 | 386 | ||
388 | save_flp_root: |
387 | save_flp_root: |
389 | pusha |
388 | pusha |
390 | call check_label |
389 | call check_label |
391 | cmp [FDC_Status], 0 |
390 | cmp [FDC_Status], 0 |
392 | jne unnecessary_root_save |
391 | jne unnecessary_root_save |
393 | cmp [root_read], 0 |
392 | cmp [root_read], 0 |
394 | je unnecessary_root_save |
393 | je unnecessary_root_save |
395 | mov [FDD_Track], 0; Цилиндр |
394 | mov [FDD_Track], 0; Цилиндр |
396 | mov [FDD_Head], 1; Сторона |
395 | mov [FDD_Head], 1; Сторона |
397 | mov [FDD_Sector], 2; Сектор |
396 | mov [FDD_Sector], 2; Сектор |
398 | mov esi, FLOPPY_BUFF |
397 | mov esi, FLOPPY_BUFF |
399 | call SeekTrack |
398 | call SeekTrack |
400 | save_flp_root_1: |
399 | save_flp_root_1: |
401 | push esi |
400 | push esi |
402 | call take_data_from_application_1 |
401 | call take_data_from_application_1 |
403 | pop esi |
402 | pop esi |
404 | add esi, 512 |
403 | add esi, 512 |
405 | call WriteSectWithRetr |
404 | call WriteSectWithRetr |
406 | cmp [FDC_Status], 0 |
405 | cmp [FDC_Status], 0 |
407 | jne unnecessary_root_save |
406 | jne unnecessary_root_save |
408 | inc [FDD_Sector] |
407 | inc [FDD_Sector] |
409 | cmp [FDD_Sector], 16 |
408 | cmp [FDD_Sector], 16 |
410 | jne save_flp_root_1 |
409 | jne save_flp_root_1 |
411 | unnecessary_root_save: |
410 | unnecessary_root_save: |
412 | mov [fdc_irq_func], fdc_null |
- | |
413 | popa |
411 | popa |
414 | ret |
412 | ret |
415 | 413 | ||
416 | save_flp_fat: |
414 | save_flp_fat: |
417 | pusha |
415 | pusha |
418 | call check_label |
416 | call check_label |
419 | cmp [FDC_Status], 0 |
417 | cmp [FDC_Status], 0 |
420 | jne unnecessary_flp_fat_save |
418 | jne unnecessary_flp_fat_save |
421 | cmp [flp_fat], 0 |
419 | cmp [flp_fat], 0 |
422 | je unnecessary_flp_fat_save |
420 | je unnecessary_flp_fat_save |
423 | call restorefatchain_flp |
421 | call restorefatchain_flp |
424 | mov [FDD_Track], 0; Цилиндр |
422 | mov [FDD_Track], 0; Цилиндр |
425 | mov [FDD_Head], 0; Сторона |
423 | mov [FDD_Head], 0; Сторона |
426 | mov [FDD_Sector], 2; Сектор |
424 | mov [FDD_Sector], 2; Сектор |
427 | mov esi, FLOPPY_BUFF |
425 | mov esi, FLOPPY_BUFF |
428 | call SeekTrack |
426 | call SeekTrack |
429 | save_flp_fat_1: |
427 | save_flp_fat_1: |
430 | push esi |
428 | push esi |
431 | call take_data_from_application_1 |
429 | call take_data_from_application_1 |
432 | pop esi |
430 | pop esi |
433 | add esi, 512 |
431 | add esi, 512 |
434 | call WriteSectWithRetr |
432 | call WriteSectWithRetr |
435 | cmp [FDC_Status], 0 |
433 | cmp [FDC_Status], 0 |
436 | jne unnecessary_flp_fat_save |
434 | jne unnecessary_flp_fat_save |
437 | inc [FDD_Sector] |
435 | inc [FDD_Sector] |
438 | cmp [FDD_Sector], 19 |
436 | cmp [FDD_Sector], 19 |
439 | jne save_flp_fat_1 |
437 | jne save_flp_fat_1 |
440 | mov [FDD_Sector], 1 |
438 | mov [FDD_Sector], 1 |
441 | mov [FDD_Head], 1 |
439 | mov [FDD_Head], 1 |
442 | call take_data_from_application_1 |
440 | call take_data_from_application_1 |
443 | call WriteSectWithRetr |
441 | call WriteSectWithRetr |
444 | cmp [FDC_Status], 0 |
442 | cmp [FDC_Status], 0 |
445 | jne unnecessary_flp_fat_save |
443 | jne unnecessary_flp_fat_save |
446 | mov [root_read], 0 |
444 | mov [root_read], 0 |
447 | unnecessary_flp_fat_save: |
445 | unnecessary_flp_fat_save: |
448 | mov [fdc_irq_func], fdc_null |
- | |
449 | popa |
446 | popa |
450 | ret |
447 | ret |
451 | 448 | ||
452 | 449 | ||
453 | restorefatchain_flp: ; restore fat chain |
450 | restorefatchain_flp: ; restore fat chain |
454 | pushad |
451 | pushad |
455 | 452 | ||
456 | mov esi, FLOPPY_FAT |
453 | mov esi, FLOPPY_FAT |
457 | mov edi, FLOPPY_BUFF |
454 | mov edi, FLOPPY_BUFF |
458 | 455 | ||
459 | fcnew2_1: |
456 | fcnew2_1: |
460 | mov eax, dword [esi] |
457 | mov eax, dword [esi] |
461 | mov ebx, dword [esi+4] |
458 | mov ebx, dword [esi+4] |
462 | shl ax, 4 |
459 | shl ax, 4 |
463 | shl eax, 4 |
460 | shl eax, 4 |
464 | shl bx, 4 |
461 | shl bx, 4 |
465 | shr ebx, 4 |
462 | shr ebx, 4 |
466 | shrd eax, ebx, 8 |
463 | shrd eax, ebx, 8 |
467 | shr ebx, 8 |
464 | shr ebx, 8 |
468 | mov dword [edi], eax |
465 | mov dword [edi], eax |
469 | add edi, 4 |
466 | add edi, 4 |
470 | mov word [edi], bx |
467 | mov word [edi], bx |
471 | add edi, 2 |
468 | add edi, 2 |
472 | add esi, 8 |
469 | add esi, 8 |
473 | 470 | ||
474 | cmp edi, FLOPPY_BUFF+0x1200;4274 bytes - all used FAT |
471 | cmp edi, FLOPPY_BUFF+0x1200;4274 bytes - all used FAT |
475 | jb fcnew2_1 |
472 | jb fcnew2_1 |
476 | 473 | ||
477 | mov esi, FLOPPY_BUFF ; duplicate fat chain |
474 | mov esi, FLOPPY_BUFF ; duplicate fat chain |
478 | mov edi, FLOPPY_BUFF+0x1200 |
475 | mov edi, FLOPPY_BUFF+0x1200 |
479 | mov ecx, 0x1200/4 |
476 | mov ecx, 0x1200/4 |
480 | cld |
477 | cld |
481 | rep movsd |
478 | rep movsd |
482 | 479 | ||
483 | popad |
480 | popad |
484 | ret |
481 | ret |
485 | 482 | ||
486 | 483 | ||
487 | save_chs_sector: |
484 | save_chs_sector: |
488 | call calculate_chs |
485 | call calculate_chs |
489 | call WriteSectWithRetr |
486 | call WriteSectWithRetr |
490 | ret |
487 | ret |
491 | 488 | ||
492 | calculate_chs: |
489 | calculate_chs: |
493 | mov bl, [FDD_Track] |
490 | mov bl, [FDD_Track] |
494 | mov [old_track], bl |
491 | mov [old_track], bl |
495 | mov ebx, 18 |
492 | mov ebx, 18 |
496 | xor edx, edx |
493 | xor edx, edx |
497 | div ebx |
494 | div ebx |
498 | inc edx |
495 | inc edx |
499 | mov [FDD_Sector], dl |
496 | mov [FDD_Sector], dl |
500 | xor edx, edx |
497 | xor edx, edx |
501 | mov ebx, 2 |
498 | mov ebx, 2 |
502 | div ebx |
499 | div ebx |
503 | mov [FDD_Track], al |
500 | mov [FDD_Track], al |
504 | mov [FDD_Head], 0 |
501 | mov [FDD_Head], 0 |
505 | test edx, edx |
502 | test edx, edx |
506 | jz no_head_2 |
503 | jz no_head_2 |
507 | inc [FDD_Head] |
504 | inc [FDD_Head] |
508 | no_head_2: |
505 | no_head_2: |
509 | mov dl, [old_track] |
506 | mov dl, [old_track] |
510 | cmp dl, [FDD_Track] |
507 | cmp dl, [FDD_Track] |
511 | je no_seek_track_1 |
508 | je no_seek_track_1 |
512 | call SeekTrack |
509 | call SeekTrack |
513 | no_seek_track_1: |
510 | no_seek_track_1: |
514 | ret |
511 | ret |
515 | 512 | ||
516 | 513 | ||
517 | get_cluster_of_a_path_flp: |
514 | get_cluster_of_a_path_flp: |
518 | ;--------------------------------------------------------- |
515 | ;--------------------------------------------------------- |
519 | ; input : EBX = pointer to a path string |
516 | ; input : EBX = pointer to a path string |
520 | ; (example: the path "/files/data/document" become |
517 | ; (example: the path "/files/data/document" become |
521 | ; "files......data.......document...0" |
518 | ; "files......data.......document...0" |
522 | ; '.' = space char |
519 | ; '.' = space char |
523 | ; '0' = char(0) (ASCII=0) !!! ) |
520 | ; '0' = char(0) (ASCII=0) !!! ) |
524 | ; output : if (CARRY=1) -> ERROR in the PATH |
521 | ; output : if (CARRY=1) -> ERROR in the PATH |
525 | ; if (CARRY=0) -> EAX=cluster |
522 | ; if (CARRY=0) -> EAX=cluster |
526 | ;--------------------------------------------------------- |
523 | ;--------------------------------------------------------- |
527 | 524 | ||
528 | push edx |
525 | push edx |
529 | mov edx, ebx |
526 | mov edx, ebx |
530 | 527 | ||
531 | search_end_of_path_flp: |
528 | search_end_of_path_flp: |
532 | cmp [save_flag], 0 |
529 | cmp [save_flag], 0 |
533 | jne search_end_of_path_flp_1 |
530 | jne search_end_of_path_flp_1 |
534 | cmp byte [edx], 0 |
531 | cmp byte [edx], 0 |
535 | je found_end_of_path_flp |
532 | je found_end_of_path_flp |
536 | jmp search_end_of_path_flp_2 |
533 | jmp search_end_of_path_flp_2 |
537 | search_end_of_path_flp_1: |
534 | search_end_of_path_flp_1: |
538 | cmp byte [edx+12], 0 |
535 | cmp byte [edx+12], 0 |
539 | je found_end_of_path_flp |
536 | je found_end_of_path_flp |
540 | search_end_of_path_flp_2: |
537 | search_end_of_path_flp_2: |
541 | inc edx; '/' |
538 | inc edx; '/' |
542 | call analyze_directory_flp |
539 | call analyze_directory_flp |
543 | jc directory_not_found_flp |
540 | jc directory_not_found_flp |
544 | 541 | ||
545 | mov eax, [ebx+20-2] ; read the HIGH 16bit cluster field |
542 | mov eax, [ebx+20-2] ; read the HIGH 16bit cluster field |
546 | mov ax, [ebx+26] ; read the LOW 16bit cluster field |
543 | mov ax, [ebx+26] ; read the LOW 16bit cluster field |
547 | and eax, 0xfff ;[fatMASK] |
544 | and eax, 0xfff ;[fatMASK] |
548 | add edx, 11 ; 8+3 (name+extension) |
545 | add edx, 11 ; 8+3 (name+extension) |
549 | jmp search_end_of_path_flp |
546 | jmp search_end_of_path_flp |
550 | 547 | ||
551 | found_end_of_path_flp: |
548 | found_end_of_path_flp: |
552 | inc edx |
549 | inc edx |
553 | mov [pointer_file_name_flp], edx |
550 | mov [pointer_file_name_flp], edx |
554 | pop edx |
551 | pop edx |
555 | clc ; no errors |
552 | clc ; no errors |
556 | ret |
553 | ret |
557 | 554 | ||
558 | directory_not_found_flp: |
555 | directory_not_found_flp: |
559 | pop edx |
556 | pop edx |
560 | stc ; errors occour |
557 | stc ; errors occour |
561 | ret |
558 | ret |
562 | 559 | ||
563 | analyze_directory_flp: |
560 | analyze_directory_flp: |
564 | ;-------------------------------- |
561 | ;-------------------------------- |
565 | ; input : EAX = first cluster of the directory |
562 | ; input : EAX = first cluster of the directory |
566 | ; EBX = pointer to filename |
563 | ; EBX = pointer to filename |
567 | ; output : IF CARRY=0 EAX = sector where th file is found |
564 | ; output : IF CARRY=0 EAX = sector where th file is found |
568 | ; EBX = pointer in buffer |
565 | ; EBX = pointer in buffer |
569 | ; [buffer .. buffer+511] |
566 | ; [buffer .. buffer+511] |
570 | ; ECX,EDX,EDI,EDI not changed |
567 | ; ECX,EDX,EDI,EDI not changed |
571 | ; IF CARRY=1 |
568 | ; IF CARRY=1 |
572 | ;-------------------------------- |
569 | ;-------------------------------- |
573 | push ebx;[esp+16] |
570 | push ebx;[esp+16] |
574 | push ecx |
571 | push ecx |
575 | push edx |
572 | push edx |
576 | push esi |
573 | push esi |
577 | push edi |
574 | push edi |
578 | 575 | ||
579 | 576 | ||
580 | adr56_flp: |
577 | adr56_flp: |
581 | mov [clust_tmp_flp], eax |
578 | mov [clust_tmp_flp], eax |
582 | add eax, 31 |
579 | add eax, 31 |
583 | pusha |
580 | pusha |
584 | call read_chs_sector |
581 | call read_chs_sector |
585 | popa |
582 | popa |
586 | cmp [FDC_Status], 0 |
583 | cmp [FDC_Status], 0 |
587 | jne not_found_file_analyze_flp |
584 | jne not_found_file_analyze_flp |
588 | 585 | ||
589 | mov ecx, 512/32 |
586 | mov ecx, 512/32 |
590 | mov ebx, FDD_BUFF |
587 | mov ebx, FDD_BUFF |
591 | 588 | ||
592 | adr1_analyze_flp: |
589 | adr1_analyze_flp: |
593 | mov esi, edx;[esp+16] |
590 | mov esi, edx;[esp+16] |
594 | mov edi, ebx |
591 | mov edi, ebx |
595 | cld |
592 | cld |
596 | push ecx |
593 | push ecx |
597 | mov ecx, 11 |
594 | mov ecx, 11 |
598 | rep cmpsb |
595 | rep cmpsb |
599 | pop ecx |
596 | pop ecx |
600 | je found_file_analyze_flp |
597 | je found_file_analyze_flp |
601 | 598 | ||
602 | add ebx, 32 |
599 | add ebx, 32 |
603 | loop adr1_analyze_flp |
600 | loop adr1_analyze_flp |
604 | 601 | ||
605 | mov eax, [clust_tmp_flp] |
602 | mov eax, [clust_tmp_flp] |
606 | shl eax, 1 ;find next cluster from FAT |
603 | shl eax, 1 ;find next cluster from FAT |
607 | add eax, FLOPPY_FAT |
604 | add eax, FLOPPY_FAT |
608 | mov eax, [eax] |
605 | mov eax, [eax] |
609 | and eax, 4095 |
606 | and eax, 4095 |
610 | cmp eax, 0x0ff8 |
607 | cmp eax, 0x0ff8 |
611 | jb adr56_flp |
608 | jb adr56_flp |
612 | not_found_file_analyze_flp: |
609 | not_found_file_analyze_flp: |
613 | pop edi |
610 | pop edi |
614 | pop esi |
611 | pop esi |
615 | pop edx |
612 | pop edx |
616 | pop ecx |
613 | pop ecx |
617 | add esp, 4 |
614 | add esp, 4 |
618 | stc ;file not found |
615 | stc ;file not found |
619 | ret |
616 | ret |
620 | 617 | ||
621 | found_file_analyze_flp: |
618 | found_file_analyze_flp: |
622 | pop edi |
619 | pop edi |
623 | pop esi |
620 | pop esi |
624 | pop edx |
621 | pop edx |
625 | pop ecx |
622 | pop ecx |
626 | add esp, 4 |
623 | add esp, 4 |
627 | clc ;file found |
624 | clc ;file found |
628 | ret |
625 | ret |
629 | 626 | ||
630 | 627 | ||
631 | ; \begin{diamond} |
628 | ; \begin{diamond} |
632 | fat_find_lfn: |
629 | fat_find_lfn: |
633 | ; in: esi->name |
630 | ; in: esi->name |
634 | ; [esp+4] = next |
631 | ; [esp+4] = next |
635 | ; [esp+8] = first |
632 | ; [esp+8] = first |
636 | ; [esp+C]... - possibly parameters for first and next |
633 | ; [esp+C]... - possibly parameters for first and next |
637 | ; out: CF=1 - file not found, eax=error code |
634 | ; out: CF=1 - file not found, eax=error code |
638 | ; else CF=0, esi->next name component, edi->direntry |
635 | ; else CF=0, esi->next name component, edi->direntry |
639 | pusha |
636 | pusha |
640 | lea eax, [esp+0Ch+20h] |
637 | lea eax, [esp+0Ch+20h] |
641 | call dword [eax-4] |
638 | call dword [eax-4] |
642 | jc .reterr |
639 | jc .reterr |
643 | sub esp, 262*2 ; reserve place for LFN |
640 | sub esp, 262*2 ; reserve place for LFN |
644 | push 0 ; for fat_get_name: read ASCII name |
641 | push 0 ; for fat_get_name: read ASCII name |
645 | .l1: |
642 | .l1: |
646 | lea ebp, [esp+4] |
643 | lea ebp, [esp+4] |
647 | call fat_get_name |
644 | call fat_get_name |
648 | jc .l2 |
645 | jc .l2 |
649 | call fat_compare_name |
646 | call fat_compare_name |
650 | jz .found |
647 | jz .found |
651 | .l2: |
648 | .l2: |
652 | mov ebp, [esp+8+262*2+4] |
649 | mov ebp, [esp+8+262*2+4] |
653 | lea eax, [esp+0Ch+20h+262*2+4] |
650 | lea eax, [esp+0Ch+20h+262*2+4] |
654 | call dword [eax-8] |
651 | call dword [eax-8] |
655 | jnc .l1 |
652 | jnc .l1 |
656 | add esp, 262*2+4 |
653 | add esp, 262*2+4 |
657 | .reterr: |
654 | .reterr: |
658 | mov [esp+28], eax |
655 | mov [esp+28], eax |
659 | stc |
656 | stc |
660 | popa |
657 | popa |
661 | ret |
658 | ret |
662 | .found: |
659 | .found: |
663 | add esp, 262*2+4 |
660 | add esp, 262*2+4 |
664 | mov ebp, [esp+8] |
661 | mov ebp, [esp+8] |
665 | ; if this is LFN entry, advance to true entry |
662 | ; if this is LFN entry, advance to true entry |
666 | cmp byte [edi+11], 0xF |
663 | cmp byte [edi+11], 0xF |
667 | jnz @f |
664 | jnz @f |
668 | lea eax, [esp+0Ch+20h] |
665 | lea eax, [esp+0Ch+20h] |
669 | call dword [eax-8] |
666 | call dword [eax-8] |
670 | jc .reterr |
667 | jc .reterr |
671 | @@: |
668 | @@: |
672 | add esp, 8 ; CF=0 |
669 | add esp, 8 ; CF=0 |
673 | push esi |
670 | push esi |
674 | push edi |
671 | push edi |
675 | popa |
672 | popa |
676 | ret |
673 | ret |
677 | 674 | ||
678 | uglobal |
675 | uglobal |
679 | ; this is for delete support |
676 | ; this is for delete support |
680 | fd_prev_sector dd ? |
677 | fd_prev_sector dd ? |
681 | fd_prev_prev_sector dd ? |
678 | fd_prev_prev_sector dd ? |
682 | endg |
679 | endg |
683 | 680 | ||
684 | flp_root_next: |
681 | flp_root_next: |
685 | cmp edi, OS_BASE+0xD200-0x20 |
682 | cmp edi, OS_BASE+0xD200-0x20 |
686 | jae @f |
683 | jae @f |
687 | add edi, 0x20 |
684 | add edi, 0x20 |
688 | ret ; CF=0 |
685 | ret ; CF=0 |
689 | @@: |
686 | @@: |
690 | ; read next sector |
687 | ; read next sector |
691 | inc dword [eax] |
688 | inc dword [eax] |
692 | cmp dword [eax], 14 |
689 | cmp dword [eax], 14 |
693 | jae flp_root_first.readerr |
690 | jae flp_root_first.readerr |
694 | push [fd_prev_sector] |
691 | push [fd_prev_sector] |
695 | pop [fd_prev_prev_sector] |
692 | pop [fd_prev_prev_sector] |
696 | push eax |
693 | push eax |
697 | mov eax, [eax] |
694 | mov eax, [eax] |
698 | add eax, 19-1 |
695 | add eax, 19-1 |
699 | mov [fd_prev_sector], eax |
696 | mov [fd_prev_sector], eax |
700 | pop eax |
697 | pop eax |
701 | flp_root_first: |
698 | flp_root_first: |
702 | mov eax, [eax] |
699 | mov eax, [eax] |
703 | pusha |
700 | pusha |
704 | add eax, 19 |
701 | add eax, 19 |
705 | call read_chs_sector |
702 | call read_chs_sector |
706 | popa |
703 | popa |
707 | cmp [FDC_Status], 0 |
704 | cmp [FDC_Status], 0 |
708 | jnz .readerr |
705 | jnz .readerr |
709 | mov edi, FDD_BUFF |
706 | mov edi, FDD_BUFF |
710 | ret ; CF=0 |
707 | ret ; CF=0 |
711 | .readerr: |
708 | .readerr: |
712 | stc |
709 | stc |
713 | ret |
710 | ret |
714 | 711 | ||
715 | flp_rootmem_first: |
712 | flp_rootmem_first: |
716 | mov edi, FLOPPY_BUFF |
713 | mov edi, FLOPPY_BUFF |
717 | clc |
714 | clc |
718 | ret |
715 | ret |
719 | flp_rootmem_next: |
716 | flp_rootmem_next: |
720 | add edi, 0x20 |
717 | add edi, 0x20 |
721 | cmp edi, FLOPPY_BUFF+14*0x200 |
718 | cmp edi, FLOPPY_BUFF+14*0x200 |
722 | cmc |
719 | cmc |
723 | flp_rootmem_next_write: |
720 | flp_rootmem_next_write: |
724 | flp_rootmem_begin_write: |
721 | flp_rootmem_begin_write: |
725 | flp_rootmem_end_write: |
722 | flp_rootmem_end_write: |
726 | ret |
723 | ret |
727 | flp_rootmem_extend_dir: |
724 | flp_rootmem_extend_dir: |
728 | stc |
725 | stc |
729 | ret |
726 | ret |
730 | 727 | ||
731 | flp_notroot_next: |
728 | flp_notroot_next: |
732 | cmp edi, OS_BASE+0xD200-0x20 |
729 | cmp edi, OS_BASE+0xD200-0x20 |
733 | jae flp_notroot_next_sector |
730 | jae flp_notroot_next_sector |
734 | add edi, 0x20 |
731 | add edi, 0x20 |
735 | ret ; CF=0 |
732 | ret ; CF=0 |
736 | flp_notroot_next_sector: |
733 | flp_notroot_next_sector: |
737 | push ecx |
734 | push ecx |
738 | mov ecx, [eax] |
735 | mov ecx, [eax] |
739 | push [fd_prev_sector] |
736 | push [fd_prev_sector] |
740 | pop [fd_prev_prev_sector] |
737 | pop [fd_prev_prev_sector] |
741 | add ecx, 31 |
738 | add ecx, 31 |
742 | mov [fd_prev_sector], ecx |
739 | mov [fd_prev_sector], ecx |
743 | mov ecx, [(ecx-31)*2+FLOPPY_FAT] |
740 | mov ecx, [(ecx-31)*2+FLOPPY_FAT] |
744 | and ecx, 0xFFF |
741 | and ecx, 0xFFF |
745 | cmp ecx, 2849 |
742 | cmp ecx, 2849 |
746 | jae flp_notroot_first.err2 |
743 | jae flp_notroot_first.err2 |
747 | mov [eax], ecx |
744 | mov [eax], ecx |
748 | pop ecx |
745 | pop ecx |
749 | flp_notroot_first: |
746 | flp_notroot_first: |
750 | mov eax, [eax] |
747 | mov eax, [eax] |
751 | cmp eax, 2 |
748 | cmp eax, 2 |
752 | jb .err |
749 | jb .err |
753 | cmp eax, 2849 |
750 | cmp eax, 2849 |
754 | jae .err |
751 | jae .err |
755 | pusha |
752 | pusha |
756 | add eax, 31 |
753 | add eax, 31 |
757 | call read_chs_sector |
754 | call read_chs_sector |
758 | popa |
755 | popa |
759 | mov edi, FDD_BUFF |
756 | mov edi, FDD_BUFF |
760 | cmp [FDC_Status], 0 |
757 | cmp [FDC_Status], 0 |
761 | jnz .err |
758 | jnz .err |
762 | ret ; CF=0 |
759 | ret ; CF=0 |
763 | .err2: |
760 | .err2: |
764 | pop ecx |
761 | pop ecx |
765 | .err: |
762 | .err: |
766 | stc |
763 | stc |
767 | ret |
764 | ret |
768 | flp_notroot_begin_write: |
765 | flp_notroot_begin_write: |
769 | pusha |
766 | pusha |
770 | mov eax, [eax] |
767 | mov eax, [eax] |
771 | add eax, 31 |
768 | add eax, 31 |
772 | call read_chs_sector |
769 | call read_chs_sector |
773 | popa |
770 | popa |
774 | ret |
771 | ret |
775 | flp_notroot_end_write: |
772 | flp_notroot_end_write: |
776 | pusha |
773 | pusha |
777 | mov eax, [eax] |
774 | mov eax, [eax] |
778 | add eax, 31 |
775 | add eax, 31 |
779 | call save_chs_sector |
776 | call save_chs_sector |
780 | popa |
777 | popa |
781 | ret |
778 | ret |
782 | flp_notroot_next_write: |
779 | flp_notroot_next_write: |
783 | cmp edi, OS_BASE+0xD200 |
780 | cmp edi, OS_BASE+0xD200 |
784 | jae @f |
781 | jae @f |
785 | ret |
782 | ret |
786 | @@: |
783 | @@: |
787 | call flp_notroot_end_write |
784 | call flp_notroot_end_write |
788 | jmp flp_notroot_next_sector |
785 | jmp flp_notroot_next_sector |
789 | flp_notroot_extend_dir: |
786 | flp_notroot_extend_dir: |
790 | ; find free cluster in FAT |
787 | ; find free cluster in FAT |
791 | pusha |
788 | pusha |
792 | xor eax, eax |
789 | xor eax, eax |
793 | mov edi, FLOPPY_FAT |
790 | mov edi, FLOPPY_FAT |
794 | mov ecx, 2849 |
791 | mov ecx, 2849 |
795 | repnz scasw |
792 | repnz scasw |
796 | jnz .notfound |
793 | jnz .notfound |
797 | mov word [edi-2], 0xFFF ; mark as last cluster |
794 | mov word [edi-2], 0xFFF ; mark as last cluster |
798 | sub edi, FLOPPY_FAT |
795 | sub edi, FLOPPY_FAT |
799 | shr edi, 1 |
796 | shr edi, 1 |
800 | dec edi |
797 | dec edi |
801 | mov eax, [esp+28] |
798 | mov eax, [esp+28] |
802 | mov ecx, [eax] |
799 | mov ecx, [eax] |
803 | mov [FLOPPY_FAT+ecx*2], di |
800 | mov [FLOPPY_FAT+ecx*2], di |
804 | mov [eax], edi |
801 | mov [eax], edi |
805 | xor eax, eax |
802 | xor eax, eax |
806 | mov edi, FDD_BUFF |
803 | mov edi, FDD_BUFF |
807 | mov ecx, 128 |
804 | mov ecx, 128 |
808 | rep stosd |
805 | rep stosd |
809 | popa |
806 | popa |
810 | call flp_notroot_end_write |
807 | call flp_notroot_end_write |
811 | mov edi, FDD_BUFF |
808 | mov edi, FDD_BUFF |
812 | clc |
809 | clc |
813 | ret |
810 | ret |
814 | .notfound: |
811 | .notfound: |
815 | popa |
812 | popa |
816 | stc |
813 | stc |
817 | ret |
814 | ret |
818 | 815 | ||
819 | fd_find_lfn: |
816 | fd_find_lfn: |
820 | ; in: esi+ebp -> name |
817 | ; in: esi+ebp -> name |
821 | ; out: CF=1 - file not found |
818 | ; out: CF=1 - file not found |
822 | ; else CF=0 and edi->direntry, eax=directory cluster (0 for root) |
819 | ; else CF=0 and edi->direntry, eax=directory cluster (0 for root) |
823 | push esi edi |
820 | push esi edi |
824 | push 0 |
821 | push 0 |
825 | push flp_root_first |
822 | push flp_root_first |
826 | push flp_root_next |
823 | push flp_root_next |
827 | .loop: |
824 | .loop: |
828 | call fat_find_lfn |
825 | call fat_find_lfn |
829 | jc .notfound |
826 | jc .notfound |
830 | cmp byte [esi], 0 |
827 | cmp byte [esi], 0 |
831 | jz .found |
828 | jz .found |
832 | .continue: |
829 | .continue: |
833 | test byte [edi+11], 10h |
830 | test byte [edi+11], 10h |
834 | jz .notfound |
831 | jz .notfound |
835 | movzx eax, word [edi+26] ; cluster |
832 | movzx eax, word [edi+26] ; cluster |
836 | mov [esp+8], eax |
833 | mov [esp+8], eax |
837 | mov dword [esp+4], flp_notroot_first |
834 | mov dword [esp+4], flp_notroot_first |
838 | mov dword [esp], flp_notroot_next |
835 | mov dword [esp], flp_notroot_next |
839 | jmp .loop |
836 | jmp .loop |
840 | .notfound: |
837 | .notfound: |
841 | add esp, 12 |
838 | add esp, 12 |
842 | pop edi esi |
839 | pop edi esi |
843 | stc |
840 | stc |
844 | ret |
841 | ret |
845 | .found: |
842 | .found: |
846 | test ebp, ebp |
843 | test ebp, ebp |
847 | jz @f |
844 | jz @f |
848 | mov esi, ebp |
845 | mov esi, ebp |
849 | xor ebp, ebp |
846 | xor ebp, ebp |
850 | jmp .continue |
847 | jmp .continue |
851 | @@: |
848 | @@: |
852 | mov eax, [esp+8] |
849 | mov eax, [esp+8] |
853 | add eax, 31 |
850 | add eax, 31 |
854 | cmp dword [esp], flp_root_next |
851 | cmp dword [esp], flp_root_next |
855 | jnz @f |
852 | jnz @f |
856 | add eax, -31+19 |
853 | add eax, -31+19 |
857 | @@: |
854 | @@: |
858 | add esp, 16 ; CF=0 |
855 | add esp, 16 ; CF=0 |
859 | pop esi |
856 | pop esi |
860 | ret |
857 | ret |
861 | 858 | ||
862 | ;---------------------------------------------------------------- |
859 | ;---------------------------------------------------------------- |
863 | ; |
860 | ; |
864 | ; fs_FloppyRead - LFN variant for reading floppy |
861 | ; fs_FloppyRead - LFN variant for reading floppy |
865 | ; |
862 | ; |
866 | ; esi points to filename |
863 | ; esi points to filename |
867 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
864 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
868 | ; may be ebx=0 - start from first byte |
865 | ; may be ebx=0 - start from first byte |
869 | ; ecx number of bytes to read, 0+ |
866 | ; ecx number of bytes to read, 0+ |
870 | ; edx mem location to return data |
867 | ; edx mem location to return data |
871 | ; |
868 | ; |
872 | ; ret ebx = bytes read or 0xffffffff file not found |
869 | ; ret ebx = bytes read or 0xffffffff file not found |
873 | ; eax = 0 ok read or other = errormsg |
870 | ; eax = 0 ok read or other = errormsg |
874 | ; |
871 | ; |
875 | ;-------------------------------------------------------------- |
872 | ;-------------------------------------------------------------- |
876 | fs_FloppyRead: |
873 | fs_FloppyRead: |
877 | call read_flp_fat |
874 | call read_flp_fat |
878 | cmp byte [esi], 0 |
875 | cmp byte [esi], 0 |
879 | jnz @f |
876 | jnz @f |
880 | or ebx, -1 |
877 | or ebx, -1 |
881 | mov eax, 10 ; access denied |
878 | mov eax, 10 ; access denied |
882 | ret |
879 | ret |
883 | @@: |
880 | @@: |
884 | push edi |
881 | push edi |
885 | call fd_find_lfn |
882 | call fd_find_lfn |
886 | jnc .found |
883 | jnc .found |
887 | pop edi |
884 | pop edi |
888 | or ebx, -1 |
885 | or ebx, -1 |
889 | mov eax, 5 ; file not found |
886 | mov eax, 5 ; file not found |
890 | ret |
887 | ret |
891 | .found: |
888 | .found: |
892 | test ebx, ebx |
889 | test ebx, ebx |
893 | jz .l1 |
890 | jz .l1 |
894 | cmp dword [ebx+4], 0 |
891 | cmp dword [ebx+4], 0 |
895 | jz @f |
892 | jz @f |
896 | xor ebx, ebx |
893 | xor ebx, ebx |
897 | .reteof: |
894 | .reteof: |
898 | mov eax, 6 ; EOF |
895 | mov eax, 6 ; EOF |
899 | pop edi |
896 | pop edi |
900 | ret |
897 | ret |
901 | @@: |
898 | @@: |
902 | mov ebx, [ebx] |
899 | mov ebx, [ebx] |
903 | .l1: |
900 | .l1: |
904 | push ecx edx |
901 | push ecx edx |
905 | push 0 |
902 | push 0 |
906 | mov eax, [edi+28] |
903 | mov eax, [edi+28] |
907 | sub eax, ebx |
904 | sub eax, ebx |
908 | jb .eof |
905 | jb .eof |
909 | cmp eax, ecx |
906 | cmp eax, ecx |
910 | jae @f |
907 | jae @f |
911 | mov ecx, eax |
908 | mov ecx, eax |
912 | mov byte [esp], 6 ; EOF |
909 | mov byte [esp], 6 ; EOF |
913 | @@: |
910 | @@: |
914 | movzx edi, word [edi+26] |
911 | movzx edi, word [edi+26] |
915 | .new: |
912 | .new: |
916 | jecxz .done |
913 | jecxz .done |
917 | test edi, edi |
914 | test edi, edi |
918 | jz .eof |
915 | jz .eof |
919 | cmp edi, 0xFF8 |
916 | cmp edi, 0xFF8 |
920 | jae .eof |
917 | jae .eof |
921 | sub ebx, 512 |
918 | sub ebx, 512 |
922 | jae .skip |
919 | jae .skip |
923 | lea eax, [edi+31] |
920 | lea eax, [edi+31] |
924 | pusha |
921 | pusha |
925 | call read_chs_sector |
922 | call read_chs_sector |
926 | popa |
923 | popa |
927 | cmp [FDC_Status], 0 |
924 | cmp [FDC_Status], 0 |
928 | jnz .err |
925 | jnz .err |
929 | lea eax, [FDD_BUFF+ebx+512] |
926 | lea eax, [FDD_BUFF+ebx+512] |
930 | neg ebx |
927 | neg ebx |
931 | push ecx |
928 | push ecx |
932 | cmp ecx, ebx |
929 | cmp ecx, ebx |
933 | jbe @f |
930 | jbe @f |
934 | mov ecx, ebx |
931 | mov ecx, ebx |
935 | @@: |
932 | @@: |
936 | mov ebx, edx |
933 | mov ebx, edx |
937 | call memmove |
934 | call memmove |
938 | add edx, ecx |
935 | add edx, ecx |
939 | sub [esp], ecx |
936 | sub [esp], ecx |
940 | pop ecx |
937 | pop ecx |
941 | xor ebx, ebx |
938 | xor ebx, ebx |
942 | .skip: |
939 | .skip: |
943 | movzx edi, word [edi*2+FLOPPY_FAT] |
940 | movzx edi, word [edi*2+FLOPPY_FAT] |
944 | jmp .new |
941 | jmp .new |
945 | .done: |
942 | .done: |
946 | mov ebx, edx |
943 | mov ebx, edx |
947 | pop eax edx ecx edi |
944 | pop eax edx ecx edi |
948 | sub ebx, edx |
945 | sub ebx, edx |
949 | ret |
946 | ret |
950 | .eof: |
947 | .eof: |
951 | mov ebx, edx |
948 | mov ebx, edx |
952 | pop eax edx ecx |
949 | pop eax edx ecx |
953 | jmp .reteof |
950 | jmp .reteof |
954 | .err: |
951 | .err: |
955 | mov ebx, edx |
952 | mov ebx, edx |
956 | pop eax edx ecx edi |
953 | pop eax edx ecx edi |
957 | sub ebx, edx |
954 | sub ebx, edx |
958 | mov al, 11 |
955 | mov al, 11 |
959 | ret |
956 | ret |
960 | 957 | ||
961 | ;---------------------------------------------------------------- |
958 | ;---------------------------------------------------------------- |
962 | ; |
959 | ; |
963 | ; fs_FloppyReadFolder - LFN variant for reading floppy folders |
960 | ; fs_FloppyReadFolder - LFN variant for reading floppy folders |
964 | ; |
961 | ; |
965 | ; esi points to filename |
962 | ; esi points to filename |
966 | ; ebx pointer to structure: 32-bit number = first wanted block, 0+ |
963 | ; ebx pointer to structure: 32-bit number = first wanted block, 0+ |
967 | ; & flags (bitfields) |
964 | ; & flags (bitfields) |
968 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
965 | ; flags: bit 0: 0=ANSI names, 1=UNICODE names |
969 | ; ecx number of blocks to read, 0+ |
966 | ; ecx number of blocks to read, 0+ |
970 | ; edx mem location to return data |
967 | ; edx mem location to return data |
971 | ; |
968 | ; |
972 | ; ret ebx = blocks read or 0xffffffff folder not found |
969 | ; ret ebx = blocks read or 0xffffffff folder not found |
973 | ; eax = 0 ok read or other = errormsg |
970 | ; eax = 0 ok read or other = errormsg |
974 | ; |
971 | ; |
975 | ;-------------------------------------------------------------- |
972 | ;-------------------------------------------------------------- |
976 | fs_FloppyReadFolder: |
973 | fs_FloppyReadFolder: |
977 | call read_flp_fat |
974 | call read_flp_fat |
978 | push edi |
975 | push edi |
979 | cmp byte [esi], 0 |
976 | cmp byte [esi], 0 |
980 | jz .root |
977 | jz .root |
981 | call fd_find_lfn |
978 | call fd_find_lfn |
982 | jnc .found |
979 | jnc .found |
983 | pop edi |
980 | pop edi |
984 | or ebx, -1 |
981 | or ebx, -1 |
985 | mov eax, ERROR_FILE_NOT_FOUND |
982 | mov eax, ERROR_FILE_NOT_FOUND |
986 | ret |
983 | ret |
987 | .found: |
984 | .found: |
988 | test byte [edi+11], 0x10 ; do not allow read files |
985 | test byte [edi+11], 0x10 ; do not allow read files |
989 | jnz .found_dir |
986 | jnz .found_dir |
990 | pop edi |
987 | pop edi |
991 | or ebx, -1 |
988 | or ebx, -1 |
992 | mov eax, ERROR_ACCESS_DENIED |
989 | mov eax, ERROR_ACCESS_DENIED |
993 | ret |
990 | ret |
994 | .found_dir: |
991 | .found_dir: |
995 | movzx eax, word [edi+26] |
992 | movzx eax, word [edi+26] |
996 | add eax, 31 |
993 | add eax, 31 |
997 | push 0 |
994 | push 0 |
998 | jmp .doit |
995 | jmp .doit |
999 | .root: |
996 | .root: |
1000 | mov eax, 19 |
997 | mov eax, 19 |
1001 | push 14 |
998 | push 14 |
1002 | .doit: |
999 | .doit: |
1003 | push ecx ebp |
1000 | push ecx ebp |
1004 | sub esp, 262*2 ; reserve space for LFN |
1001 | sub esp, 262*2 ; reserve space for LFN |
1005 | mov ebp, esp |
1002 | mov ebp, esp |
1006 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE names |
1003 | push dword [ebx+4] ; for fat_get_name: read ANSI/UNICODE names |
1007 | mov ebx, [ebx] |
1004 | mov ebx, [ebx] |
1008 | ; init header |
1005 | ; init header |
1009 | push eax ecx |
1006 | push eax ecx |
1010 | mov edi, edx |
1007 | mov edi, edx |
1011 | mov ecx, 32/4 |
1008 | mov ecx, 32/4 |
1012 | xor eax, eax |
1009 | xor eax, eax |
1013 | rep stosd |
1010 | rep stosd |
1014 | pop ecx eax |
1011 | pop ecx eax |
1015 | mov byte [edx], 1 ; version |
1012 | mov byte [edx], 1 ; version |
1016 | mov esi, edi ; esi points to BDFE |
1013 | mov esi, edi ; esi points to BDFE |
1017 | .main_loop: |
1014 | .main_loop: |
1018 | pusha |
1015 | pusha |
1019 | call read_chs_sector |
1016 | call read_chs_sector |
1020 | popa |
1017 | popa |
1021 | cmp [FDC_Status], 0 |
1018 | cmp [FDC_Status], 0 |
1022 | jnz .error |
1019 | jnz .error |
1023 | mov edi, FDD_BUFF |
1020 | mov edi, FDD_BUFF |
1024 | push eax |
1021 | push eax |
1025 | .l1: |
1022 | .l1: |
1026 | call fat_get_name |
1023 | call fat_get_name |
1027 | jc .l2 |
1024 | jc .l2 |
1028 | cmp byte [edi+11], 0xF |
1025 | cmp byte [edi+11], 0xF |
1029 | jnz .do_bdfe |
1026 | jnz .do_bdfe |
1030 | add edi, 0x20 |
1027 | add edi, 0x20 |
1031 | cmp edi, OS_BASE+0xD200 |
1028 | cmp edi, OS_BASE+0xD200 |
1032 | jb .do_bdfe |
1029 | jb .do_bdfe |
1033 | pop eax |
1030 | pop eax |
1034 | inc eax |
1031 | inc eax |
1035 | dec byte [esp+262*2+12] |
1032 | dec byte [esp+262*2+12] |
1036 | jz .done |
1033 | jz .done |
1037 | jns @f |
1034 | jns @f |
1038 | ; read next sector from FAT |
1035 | ; read next sector from FAT |
1039 | mov eax, [(eax-31-1)*2+FLOPPY_FAT] |
1036 | mov eax, [(eax-31-1)*2+FLOPPY_FAT] |
1040 | and eax, 0xFFF |
1037 | and eax, 0xFFF |
1041 | cmp eax, 0xFF8 |
1038 | cmp eax, 0xFF8 |
1042 | jae .done |
1039 | jae .done |
1043 | add eax, 31 |
1040 | add eax, 31 |
1044 | mov byte [esp+262*2+12], 0 |
1041 | mov byte [esp+262*2+12], 0 |
1045 | @@: |
1042 | @@: |
1046 | pusha |
1043 | pusha |
1047 | call read_chs_sector |
1044 | call read_chs_sector |
1048 | popa |
1045 | popa |
1049 | cmp [FDC_Status], 0 |
1046 | cmp [FDC_Status], 0 |
1050 | jnz .error |
1047 | jnz .error |
1051 | mov edi, FDD_BUFF |
1048 | mov edi, FDD_BUFF |
1052 | push eax |
1049 | push eax |
1053 | .do_bdfe: |
1050 | .do_bdfe: |
1054 | inc dword [edx+8] ; new file found |
1051 | inc dword [edx+8] ; new file found |
1055 | dec ebx |
1052 | dec ebx |
1056 | jns .l2 |
1053 | jns .l2 |
1057 | dec ecx |
1054 | dec ecx |
1058 | js .l2 |
1055 | js .l2 |
1059 | inc dword [edx+4] ; new file block copied |
1056 | inc dword [edx+4] ; new file block copied |
1060 | call fat_entry_to_bdfe |
1057 | call fat_entry_to_bdfe |
1061 | .l2: |
1058 | .l2: |
1062 | add edi, 0x20 |
1059 | add edi, 0x20 |
1063 | cmp edi, OS_BASE+0xD200 |
1060 | cmp edi, OS_BASE+0xD200 |
1064 | jb .l1 |
1061 | jb .l1 |
1065 | pop eax |
1062 | pop eax |
1066 | inc eax |
1063 | inc eax |
1067 | dec byte [esp+262*2+12] |
1064 | dec byte [esp+262*2+12] |
1068 | jz .done |
1065 | jz .done |
1069 | jns @f |
1066 | jns @f |
1070 | ; read next sector from FAT |
1067 | ; read next sector from FAT |
1071 | mov eax, [(eax-31-1)*2+FLOPPY_FAT] |
1068 | mov eax, [(eax-31-1)*2+FLOPPY_FAT] |
1072 | and eax, 0xFFF |
1069 | and eax, 0xFFF |
1073 | cmp eax, 0xFF8 |
1070 | cmp eax, 0xFF8 |
1074 | jae .done |
1071 | jae .done |
1075 | add eax, 31 |
1072 | add eax, 31 |
1076 | mov byte [esp+262*2+12], 0 |
1073 | mov byte [esp+262*2+12], 0 |
1077 | @@: |
1074 | @@: |
1078 | jmp .main_loop |
1075 | jmp .main_loop |
1079 | .error: |
1076 | .error: |
1080 | add esp, 262*2+4 |
1077 | add esp, 262*2+4 |
1081 | pop ebp ecx edi edi |
1078 | pop ebp ecx edi edi |
1082 | or ebx, -1 |
1079 | or ebx, -1 |
1083 | mov eax, ERROR_FILE_NOT_FOUND |
1080 | mov eax, ERROR_FILE_NOT_FOUND |
1084 | ret |
1081 | ret |
1085 | .done: |
1082 | .done: |
1086 | add esp, 262*2+4 |
1083 | add esp, 262*2+4 |
1087 | pop ebp |
1084 | pop ebp |
1088 | mov ebx, [edx+4] |
1085 | mov ebx, [edx+4] |
1089 | xor eax, eax |
1086 | xor eax, eax |
1090 | dec ecx |
1087 | dec ecx |
1091 | js @f |
1088 | js @f |
1092 | mov al, ERROR_END_OF_FILE |
1089 | mov al, ERROR_END_OF_FILE |
1093 | @@: |
1090 | @@: |
1094 | pop ecx edi edi |
1091 | pop ecx edi edi |
1095 | ret |
1092 | ret |
1096 | 1093 | ||
1097 | ;---------------------------------------------------------------- |
1094 | ;---------------------------------------------------------------- |
1098 | ; |
1095 | ; |
1099 | ; fs_FloppyRewrite - LFN variant for writing sys floppy |
1096 | ; fs_FloppyRewrite - LFN variant for writing sys floppy |
1100 | ; |
1097 | ; |
1101 | ; esi points to filename |
1098 | ; esi points to filename |
1102 | ; ebx ignored (reserved) |
1099 | ; ebx ignored (reserved) |
1103 | ; ecx number of bytes to write, 0+ |
1100 | ; ecx number of bytes to write, 0+ |
1104 | ; edx mem location to data |
1101 | ; edx mem location to data |
1105 | ; |
1102 | ; |
1106 | ; ret ebx = number of written bytes |
1103 | ; ret ebx = number of written bytes |
1107 | ; eax = 0 ok read or other = errormsg |
1104 | ; eax = 0 ok read or other = errormsg |
1108 | ; |
1105 | ; |
1109 | ;-------------------------------------------------------------- |
1106 | ;-------------------------------------------------------------- |
1110 | @@: |
1107 | @@: |
1111 | mov eax, ERROR_ACCESS_DENIED |
1108 | mov eax, ERROR_ACCESS_DENIED |
1112 | xor ebx, ebx |
1109 | xor ebx, ebx |
1113 | ret |
1110 | ret |
1114 | fsfrfe2: |
1111 | fsfrfe2: |
1115 | popad |
1112 | popad |
1116 | fsfrfe: |
1113 | fsfrfe: |
1117 | mov eax, 11 |
1114 | mov eax, 11 |
1118 | xor ebx, ebx |
1115 | xor ebx, ebx |
1119 | ret |
1116 | ret |
1120 | 1117 | ||
1121 | fs_FloppyCreateFolder: |
1118 | fs_FloppyCreateFolder: |
1122 | mov al, 1 |
1119 | mov al, 1 |
1123 | jmp fs_FloppyRewrite.common |
1120 | jmp fs_FloppyRewrite.common |
1124 | 1121 | ||
1125 | fs_FloppyRewrite: |
1122 | fs_FloppyRewrite: |
1126 | xor eax, eax |
1123 | xor eax, eax |
1127 | .common: |
1124 | .common: |
1128 | cmp byte [esi], 0 |
1125 | cmp byte [esi], 0 |
1129 | jz @b |
1126 | jz @b |
1130 | call read_flp_fat |
1127 | call read_flp_fat |
1131 | cmp [FDC_Status], 0 |
1128 | cmp [FDC_Status], 0 |
1132 | jnz fsfrfe |
1129 | jnz fsfrfe |
1133 | pushad |
1130 | pushad |
1134 | xor edi, edi |
1131 | xor edi, edi |
1135 | push esi |
1132 | push esi |
1136 | test ebp, ebp |
1133 | test ebp, ebp |
1137 | jz @f |
1134 | jz @f |
1138 | mov esi, ebp |
1135 | mov esi, ebp |
1139 | @@: |
1136 | @@: |
1140 | lodsb |
1137 | lodsb |
1141 | test al, al |
1138 | test al, al |
1142 | jz @f |
1139 | jz @f |
1143 | cmp al, '/' |
1140 | cmp al, '/' |
1144 | jnz @b |
1141 | jnz @b |
1145 | lea edi, [esi-1] |
1142 | lea edi, [esi-1] |
1146 | jmp @b |
1143 | jmp @b |
1147 | @@: |
1144 | @@: |
1148 | pop esi |
1145 | pop esi |
1149 | test edi, edi |
1146 | test edi, edi |
1150 | jnz .noroot |
1147 | jnz .noroot |
1151 | test ebp, ebp |
1148 | test ebp, ebp |
1152 | jnz .hasebp |
1149 | jnz .hasebp |
1153 | call read_flp_root |
1150 | call read_flp_root |
1154 | cmp [FDC_Status], 0 |
1151 | cmp [FDC_Status], 0 |
1155 | jnz fsfrfe2 |
1152 | jnz fsfrfe2 |
1156 | push flp_rootmem_extend_dir |
1153 | push flp_rootmem_extend_dir |
1157 | push flp_rootmem_end_write |
1154 | push flp_rootmem_end_write |
1158 | push flp_rootmem_next_write |
1155 | push flp_rootmem_next_write |
1159 | push flp_rootmem_begin_write |
1156 | push flp_rootmem_begin_write |
1160 | xor ebp, ebp |
1157 | xor ebp, ebp |
1161 | push ebp |
1158 | push ebp |
1162 | push flp_rootmem_first |
1159 | push flp_rootmem_first |
1163 | push flp_rootmem_next |
1160 | push flp_rootmem_next |
1164 | jmp .common1 |
1161 | jmp .common1 |
1165 | .hasebp: |
1162 | .hasebp: |
1166 | mov eax, ERROR_ACCESS_DENIED |
1163 | mov eax, ERROR_ACCESS_DENIED |
1167 | cmp byte [ebp], 0 |
1164 | cmp byte [ebp], 0 |
1168 | jz .ret1 |
1165 | jz .ret1 |
1169 | push ebp |
1166 | push ebp |
1170 | xor ebp, ebp |
1167 | xor ebp, ebp |
1171 | call fd_find_lfn |
1168 | call fd_find_lfn |
1172 | pop esi |
1169 | pop esi |
1173 | jc .notfound0 |
1170 | jc .notfound0 |
1174 | jmp .common0 |
1171 | jmp .common0 |
1175 | .noroot: |
1172 | .noroot: |
1176 | mov eax, ERROR_ACCESS_DENIED |
1173 | mov eax, ERROR_ACCESS_DENIED |
1177 | cmp byte [edi+1], 0 |
1174 | cmp byte [edi+1], 0 |
1178 | jz .ret1 |
1175 | jz .ret1 |
1179 | ; check existence |
1176 | ; check existence |
1180 | mov byte [edi], 0 |
1177 | mov byte [edi], 0 |
1181 | push edi |
1178 | push edi |
1182 | call fd_find_lfn |
1179 | call fd_find_lfn |
1183 | pop esi |
1180 | pop esi |
1184 | mov byte [esi], '/' |
1181 | mov byte [esi], '/' |
1185 | jnc @f |
1182 | jnc @f |
1186 | .notfound0: |
1183 | .notfound0: |
1187 | mov eax, ERROR_FILE_NOT_FOUND |
1184 | mov eax, ERROR_FILE_NOT_FOUND |
1188 | .ret1: |
1185 | .ret1: |
1189 | mov [esp+28], eax |
1186 | mov [esp+28], eax |
1190 | popad |
1187 | popad |
1191 | xor ebx, ebx |
1188 | xor ebx, ebx |
1192 | ret |
1189 | ret |
1193 | @@: |
1190 | @@: |
1194 | inc esi |
1191 | inc esi |
1195 | .common0: |
1192 | .common0: |
1196 | test byte [edi+11], 0x10 ; must be directory |
1193 | test byte [edi+11], 0x10 ; must be directory |
1197 | mov eax, ERROR_ACCESS_DENIED |
1194 | mov eax, ERROR_ACCESS_DENIED |
1198 | jz .ret1 |
1195 | jz .ret1 |
1199 | movzx ebp, word [edi+26] ; ebp=cluster |
1196 | movzx ebp, word [edi+26] ; ebp=cluster |
1200 | mov eax, ERROR_FAT_TABLE |
1197 | mov eax, ERROR_FAT_TABLE |
1201 | cmp ebp, 2 |
1198 | cmp ebp, 2 |
1202 | jb .ret1 |
1199 | jb .ret1 |
1203 | cmp ebp, 2849 |
1200 | cmp ebp, 2849 |
1204 | jae .ret1 |
1201 | jae .ret1 |
1205 | push flp_notroot_extend_dir |
1202 | push flp_notroot_extend_dir |
1206 | push flp_notroot_end_write |
1203 | push flp_notroot_end_write |
1207 | push flp_notroot_next_write |
1204 | push flp_notroot_next_write |
1208 | push flp_notroot_begin_write |
1205 | push flp_notroot_begin_write |
1209 | push ebp |
1206 | push ebp |
1210 | push flp_notroot_first |
1207 | push flp_notroot_first |
1211 | push flp_notroot_next |
1208 | push flp_notroot_next |
1212 | .common1: |
1209 | .common1: |
1213 | call fat_find_lfn |
1210 | call fat_find_lfn |
1214 | jc .notfound |
1211 | jc .notfound |
1215 | ; found |
1212 | ; found |
1216 | test byte [edi+11], 10h |
1213 | test byte [edi+11], 10h |
1217 | jz .exists_file |
1214 | jz .exists_file |
1218 | ; found directory; if we are creating directory, return OK, |
1215 | ; found directory; if we are creating directory, return OK, |
1219 | ; if we are creating file, say "access denied" |
1216 | ; if we are creating file, say "access denied" |
1220 | add esp, 28 |
1217 | add esp, 28 |
1221 | popad |
1218 | popad |
1222 | test al, al |
1219 | test al, al |
1223 | mov eax, ERROR_ACCESS_DENIED |
1220 | mov eax, ERROR_ACCESS_DENIED |
1224 | jz @f |
1221 | jz @f |
1225 | mov al, 0 |
1222 | mov al, 0 |
1226 | @@: |
1223 | @@: |
1227 | xor ebx, ebx |
1224 | xor ebx, ebx |
1228 | ret |
1225 | ret |
1229 | .exists_file: |
1226 | .exists_file: |
1230 | ; found file; if we are creating directory, return "access denied", |
1227 | ; found file; if we are creating directory, return "access denied", |
1231 | ; if we are creating file, delete existing file and continue |
1228 | ; if we are creating file, delete existing file and continue |
1232 | cmp byte [esp+28+28], 0 |
1229 | cmp byte [esp+28+28], 0 |
1233 | jz @f |
1230 | jz @f |
1234 | add esp, 28 |
1231 | add esp, 28 |
1235 | popad |
1232 | popad |
1236 | mov eax, ERROR_ACCESS_DENIED |
1233 | mov eax, ERROR_ACCESS_DENIED |
1237 | xor ebx, ebx |
1234 | xor ebx, ebx |
1238 | ret |
1235 | ret |
1239 | @@: |
1236 | @@: |
1240 | ; delete FAT chain |
1237 | ; delete FAT chain |
1241 | push edi |
1238 | push edi |
1242 | xor eax, eax |
1239 | xor eax, eax |
1243 | mov dword [edi+28], eax ; zero size |
1240 | mov dword [edi+28], eax ; zero size |
1244 | xchg ax, word [edi+26] ; start cluster |
1241 | xchg ax, word [edi+26] ; start cluster |
1245 | test eax, eax |
1242 | test eax, eax |
1246 | jz .done1 |
1243 | jz .done1 |
1247 | @@: |
1244 | @@: |
1248 | cmp eax, 0xFF8 |
1245 | cmp eax, 0xFF8 |
1249 | jae .done1 |
1246 | jae .done1 |
1250 | lea edi, [FLOPPY_FAT + eax*2] ; position in FAT |
1247 | lea edi, [FLOPPY_FAT + eax*2] ; position in FAT |
1251 | xor eax, eax |
1248 | xor eax, eax |
1252 | xchg ax, [edi] |
1249 | xchg ax, [edi] |
1253 | jmp @b |
1250 | jmp @b |
1254 | .done1: |
1251 | .done1: |
1255 | pop edi |
1252 | pop edi |
1256 | call get_time_for_file |
1253 | call get_time_for_file |
1257 | mov [edi+22], ax |
1254 | mov [edi+22], ax |
1258 | call get_date_for_file |
1255 | call get_date_for_file |
1259 | mov [edi+24], ax |
1256 | mov [edi+24], ax |
1260 | mov [edi+18], ax |
1257 | mov [edi+18], ax |
1261 | or byte [edi+11], 20h ; set 'archive' attribute |
1258 | or byte [edi+11], 20h ; set 'archive' attribute |
1262 | jmp .doit |
1259 | jmp .doit |
1263 | .notfound: |
1260 | .notfound: |
1264 | ; file is not found; generate short name |
1261 | ; file is not found; generate short name |
1265 | call fat_name_is_legal |
1262 | call fat_name_is_legal |
1266 | jc @f |
1263 | jc @f |
1267 | add esp, 28 |
1264 | add esp, 28 |
1268 | popad |
1265 | popad |
1269 | mov eax, ERROR_FILE_NOT_FOUND |
1266 | mov eax, ERROR_FILE_NOT_FOUND |
1270 | xor ebx, ebx |
1267 | xor ebx, ebx |
1271 | ret |
1268 | ret |
1272 | @@: |
1269 | @@: |
1273 | sub esp, 12 |
1270 | sub esp, 12 |
1274 | mov edi, esp |
1271 | mov edi, esp |
1275 | call fat_gen_short_name |
1272 | call fat_gen_short_name |
1276 | .test_short_name_loop: |
1273 | .test_short_name_loop: |
1277 | push esi edi ecx |
1274 | push esi edi ecx |
1278 | mov esi, edi |
1275 | mov esi, edi |
1279 | lea eax, [esp+12+12+8] |
1276 | lea eax, [esp+12+12+8] |
1280 | mov [eax], ebp |
1277 | mov [eax], ebp |
1281 | call dword [eax-4] |
1278 | call dword [eax-4] |
1282 | jc .found |
1279 | jc .found |
1283 | .test_short_name_entry: |
1280 | .test_short_name_entry: |
1284 | cmp byte [edi+11], 0xF |
1281 | cmp byte [edi+11], 0xF |
1285 | jz .test_short_name_cont |
1282 | jz .test_short_name_cont |
1286 | mov ecx, 11 |
1283 | mov ecx, 11 |
1287 | push esi edi |
1284 | push esi edi |
1288 | repz cmpsb |
1285 | repz cmpsb |
1289 | pop edi esi |
1286 | pop edi esi |
1290 | jz .short_name_found |
1287 | jz .short_name_found |
1291 | .test_short_name_cont: |
1288 | .test_short_name_cont: |
1292 | lea eax, [esp+12+12+8] |
1289 | lea eax, [esp+12+12+8] |
1293 | call dword [eax-8] |
1290 | call dword [eax-8] |
1294 | jnc .test_short_name_entry |
1291 | jnc .test_short_name_entry |
1295 | jmp .found |
1292 | jmp .found |
1296 | .short_name_found: |
1293 | .short_name_found: |
1297 | pop ecx edi esi |
1294 | pop ecx edi esi |
1298 | call fat_next_short_name |
1295 | call fat_next_short_name |
1299 | jnc .test_short_name_loop |
1296 | jnc .test_short_name_loop |
1300 | .disk_full: |
1297 | .disk_full: |
1301 | add esp, 12+28 |
1298 | add esp, 12+28 |
1302 | popa |
1299 | popa |
1303 | mov eax, ERROR_DISK_FULL |
1300 | mov eax, ERROR_DISK_FULL |
1304 | xor ebx, ebx |
1301 | xor ebx, ebx |
1305 | ret |
1302 | ret |
1306 | .found: |
1303 | .found: |
1307 | pop ecx edi esi |
1304 | pop ecx edi esi |
1308 | ; now find space in directory |
1305 | ; now find space in directory |
1309 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
1306 | ; we need to save LFN <=> LFN is not equal to short name <=> generated name contains '~' |
1310 | mov al, '~' |
1307 | mov al, '~' |
1311 | push ecx edi |
1308 | push ecx edi |
1312 | mov ecx, 8 |
1309 | mov ecx, 8 |
1313 | repnz scasb |
1310 | repnz scasb |
1314 | movi eax, 1 ; 1 entry |
1311 | movi eax, 1 ; 1 entry |
1315 | jnz .notilde |
1312 | jnz .notilde |
1316 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
1313 | ; we need ceil(strlen(esi)/13) additional entries = floor((strlen(esi)+12+13)/13) total |
1317 | xor eax, eax |
1314 | xor eax, eax |
1318 | @@: |
1315 | @@: |
1319 | cmp byte [esi], 0 |
1316 | cmp byte [esi], 0 |
1320 | jz @f |
1317 | jz @f |
1321 | inc esi |
1318 | inc esi |
1322 | inc eax |
1319 | inc eax |
1323 | jmp @b |
1320 | jmp @b |
1324 | @@: |
1321 | @@: |
1325 | sub esi, eax |
1322 | sub esi, eax |
1326 | add eax, 12+13 |
1323 | add eax, 12+13 |
1327 | mov ecx, 13 |
1324 | mov ecx, 13 |
1328 | push edx |
1325 | push edx |
1329 | cdq |
1326 | cdq |
1330 | div ecx |
1327 | div ecx |
1331 | pop edx |
1328 | pop edx |
1332 | .notilde: |
1329 | .notilde: |
1333 | push -1 |
1330 | push -1 |
1334 | push -1 |
1331 | push -1 |
1335 | ; find |
1332 | ; find |
1336 | xor ecx, ecx |
1333 | xor ecx, ecx |
1337 | push eax |
1334 | push eax |
1338 | lea eax, [esp+12+8+12+8] |
1335 | lea eax, [esp+12+8+12+8] |
1339 | mov [eax], ebp |
1336 | mov [eax], ebp |
1340 | call dword [eax-4] |
1337 | call dword [eax-4] |
1341 | pop eax |
1338 | pop eax |
1342 | jnc .scan_dir |
1339 | jnc .scan_dir |
1343 | .fsfrfe3: |
1340 | .fsfrfe3: |
1344 | add esp, 8+8+12+28 |
1341 | add esp, 8+8+12+28 |
1345 | popad |
1342 | popad |
1346 | mov eax, 11 |
1343 | mov eax, 11 |
1347 | xor ebx, ebx |
1344 | xor ebx, ebx |
1348 | ret |
1345 | ret |
1349 | .scan_dir: |
1346 | .scan_dir: |
1350 | cmp byte [edi], 0 |
1347 | cmp byte [edi], 0 |
1351 | jz .free |
1348 | jz .free |
1352 | cmp byte [edi], 0xE5 |
1349 | cmp byte [edi], 0xE5 |
1353 | jz .free |
1350 | jz .free |
1354 | xor ecx, ecx |
1351 | xor ecx, ecx |
1355 | .scan_cont: |
1352 | .scan_cont: |
1356 | push eax |
1353 | push eax |
1357 | lea eax, [esp+12+8+12+8] |
1354 | lea eax, [esp+12+8+12+8] |
1358 | call dword [eax-8] |
1355 | call dword [eax-8] |
1359 | pop eax |
1356 | pop eax |
1360 | jnc .scan_dir |
1357 | jnc .scan_dir |
1361 | cmp [FDC_Status], 0 |
1358 | cmp [FDC_Status], 0 |
1362 | jnz .fsfrfe3 |
1359 | jnz .fsfrfe3 |
1363 | push eax |
1360 | push eax |
1364 | lea eax, [esp+12+8+12+8] |
1361 | lea eax, [esp+12+8+12+8] |
1365 | call dword [eax+16] ; extend directory |
1362 | call dword [eax+16] ; extend directory |
1366 | pop eax |
1363 | pop eax |
1367 | jnc .scan_dir |
1364 | jnc .scan_dir |
1368 | add esp, 8+8+12+28 |
1365 | add esp, 8+8+12+28 |
1369 | popad |
1366 | popad |
1370 | mov eax, ERROR_DISK_FULL |
1367 | mov eax, ERROR_DISK_FULL |
1371 | xor ebx, ebx |
1368 | xor ebx, ebx |
1372 | ret |
1369 | ret |
1373 | .free: |
1370 | .free: |
1374 | test ecx, ecx |
1371 | test ecx, ecx |
1375 | jnz @f |
1372 | jnz @f |
1376 | mov [esp], edi |
1373 | mov [esp], edi |
1377 | mov ecx, [esp+8+8+12+8] |
1374 | mov ecx, [esp+8+8+12+8] |
1378 | mov [esp+4], ecx |
1375 | mov [esp+4], ecx |
1379 | xor ecx, ecx |
1376 | xor ecx, ecx |
1380 | @@: |
1377 | @@: |
1381 | inc ecx |
1378 | inc ecx |
1382 | cmp ecx, eax |
1379 | cmp ecx, eax |
1383 | jb .scan_cont |
1380 | jb .scan_cont |
1384 | ; found! |
1381 | ; found! |
1385 | ; calculate name checksum |
1382 | ; calculate name checksum |
1386 | push esi ecx |
1383 | push esi ecx |
1387 | mov esi, [esp+8+8] |
1384 | mov esi, [esp+8+8] |
1388 | mov ecx, 11 |
1385 | mov ecx, 11 |
1389 | xor eax, eax |
1386 | xor eax, eax |
1390 | @@: |
1387 | @@: |
1391 | ror al, 1 |
1388 | ror al, 1 |
1392 | add al, [esi] |
1389 | add al, [esi] |
1393 | inc esi |
1390 | inc esi |
1394 | loop @b |
1391 | loop @b |
1395 | pop ecx esi |
1392 | pop ecx esi |
1396 | pop edi |
1393 | pop edi |
1397 | pop dword [esp+8+12+8] |
1394 | pop dword [esp+8+12+8] |
1398 | ; edi points to first entry in free chunk |
1395 | ; edi points to first entry in free chunk |
1399 | dec ecx |
1396 | dec ecx |
1400 | jz .nolfn |
1397 | jz .nolfn |
1401 | push esi |
1398 | push esi |
1402 | push eax |
1399 | push eax |
1403 | lea eax, [esp+8+8+12+8] |
1400 | lea eax, [esp+8+8+12+8] |
1404 | call dword [eax+4] ; begin write |
1401 | call dword [eax+4] ; begin write |
1405 | mov al, 40h |
1402 | mov al, 40h |
1406 | .writelfn: |
1403 | .writelfn: |
1407 | or al, cl |
1404 | or al, cl |
1408 | mov esi, [esp+4] |
1405 | mov esi, [esp+4] |
1409 | push ecx |
1406 | push ecx |
1410 | dec ecx |
1407 | dec ecx |
1411 | imul ecx, 13 |
1408 | imul ecx, 13 |
1412 | add esi, ecx |
1409 | add esi, ecx |
1413 | stosb |
1410 | stosb |
1414 | mov cl, 5 |
1411 | mov cl, 5 |
1415 | call fs_RamdiskRewrite.read_symbols |
1412 | call fs_RamdiskRewrite.read_symbols |
1416 | mov ax, 0xF |
1413 | mov ax, 0xF |
1417 | stosw |
1414 | stosw |
1418 | mov al, [esp+4] |
1415 | mov al, [esp+4] |
1419 | stosb |
1416 | stosb |
1420 | mov cl, 6 |
1417 | mov cl, 6 |
1421 | call fs_RamdiskRewrite.read_symbols |
1418 | call fs_RamdiskRewrite.read_symbols |
1422 | xor eax, eax |
1419 | xor eax, eax |
1423 | stosw |
1420 | stosw |
1424 | mov cl, 2 |
1421 | mov cl, 2 |
1425 | call fs_RamdiskRewrite.read_symbols |
1422 | call fs_RamdiskRewrite.read_symbols |
1426 | pop ecx |
1423 | pop ecx |
1427 | lea eax, [esp+8+8+12+8] |
1424 | lea eax, [esp+8+8+12+8] |
1428 | call dword [eax+8] ; next write |
1425 | call dword [eax+8] ; next write |
1429 | xor eax, eax |
1426 | xor eax, eax |
1430 | loop .writelfn |
1427 | loop .writelfn |
1431 | pop eax |
1428 | pop eax |
1432 | pop esi |
1429 | pop esi |
1433 | ; lea eax, [esp+8+12+8] |
1430 | ; lea eax, [esp+8+12+8] |
1434 | ; call dword [eax+12] ; end write |
1431 | ; call dword [eax+12] ; end write |
1435 | .nolfn: |
1432 | .nolfn: |
1436 | xchg esi, [esp] |
1433 | xchg esi, [esp] |
1437 | mov ecx, 11 |
1434 | mov ecx, 11 |
1438 | rep movsb |
1435 | rep movsb |
1439 | mov word [edi], 20h ; attributes |
1436 | mov word [edi], 20h ; attributes |
1440 | sub edi, 11 |
1437 | sub edi, 11 |
1441 | pop esi ecx |
1438 | pop esi ecx |
1442 | add esp, 12 |
1439 | add esp, 12 |
1443 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
1440 | mov byte [edi+13], 0 ; tenths of a second at file creation time |
1444 | call get_time_for_file |
1441 | call get_time_for_file |
1445 | mov [edi+14], ax ; creation time |
1442 | mov [edi+14], ax ; creation time |
1446 | mov [edi+22], ax ; last write time |
1443 | mov [edi+22], ax ; last write time |
1447 | call get_date_for_file |
1444 | call get_date_for_file |
1448 | mov [edi+16], ax ; creation date |
1445 | mov [edi+16], ax ; creation date |
1449 | mov [edi+24], ax ; last write date |
1446 | mov [edi+24], ax ; last write date |
1450 | mov [edi+18], ax ; last access date |
1447 | mov [edi+18], ax ; last access date |
1451 | and word [edi+20], 0 ; high word of cluster |
1448 | and word [edi+20], 0 ; high word of cluster |
1452 | and word [edi+26], 0 ; low word of cluster - to be filled |
1449 | and word [edi+26], 0 ; low word of cluster - to be filled |
1453 | and dword [edi+28], 0 ; file size - to be filled |
1450 | and dword [edi+28], 0 ; file size - to be filled |
1454 | cmp byte [esp+28+28], 0 |
1451 | cmp byte [esp+28+28], 0 |
1455 | jz .doit |
1452 | jz .doit |
1456 | ; create directory |
1453 | ; create directory |
1457 | mov byte [edi+11], 10h ; attributes: folder |
1454 | mov byte [edi+11], 10h ; attributes: folder |
1458 | mov ecx, 32*2 |
1455 | mov ecx, 32*2 |
1459 | mov edx, edi |
1456 | mov edx, edi |
1460 | .doit: |
1457 | .doit: |
1461 | lea eax, [esp+8] |
1458 | lea eax, [esp+8] |
1462 | call dword [eax+12] ; flush directory |
1459 | call dword [eax+12] ; flush directory |
1463 | push ecx |
1460 | push ecx |
1464 | push edi |
1461 | push edi |
1465 | push 0 |
1462 | push 0 |
1466 | mov esi, edx |
1463 | mov esi, edx |
1467 | test ecx, ecx |
1464 | test ecx, ecx |
1468 | jz .done |
1465 | jz .done |
1469 | mov ecx, 2849 |
1466 | mov ecx, 2849 |
1470 | mov edi, FLOPPY_FAT |
1467 | mov edi, FLOPPY_FAT |
1471 | push 0 ; first cluster |
1468 | push 0 ; first cluster |
1472 | .write_loop: |
1469 | .write_loop: |
1473 | ; allocate new cluster |
1470 | ; allocate new cluster |
1474 | xor eax, eax |
1471 | xor eax, eax |
1475 | repnz scasw |
1472 | repnz scasw |
1476 | mov al, ERROR_DISK_FULL |
1473 | mov al, ERROR_DISK_FULL |
1477 | jnz .ret |
1474 | jnz .ret |
1478 | dec edi |
1475 | dec edi |
1479 | dec edi |
1476 | dec edi |
1480 | 1477 | ||
1481 | mov eax, edi |
1478 | mov eax, edi |
1482 | sub eax, FLOPPY_FAT |
1479 | sub eax, FLOPPY_FAT |
1483 | 1480 | ||
1484 | shr eax, 1 ; eax = cluster |
1481 | shr eax, 1 ; eax = cluster |
1485 | mov word [edi], 0xFFF ; mark as last cluster |
1482 | mov word [edi], 0xFFF ; mark as last cluster |
1486 | xchg edi, [esp+4] |
1483 | xchg edi, [esp+4] |
1487 | cmp dword [esp], 0 |
1484 | cmp dword [esp], 0 |
1488 | jz .first |
1485 | jz .first |
1489 | stosw |
1486 | stosw |
1490 | jmp @f |
1487 | jmp @f |
1491 | .first: |
1488 | .first: |
1492 | mov [esp], eax |
1489 | mov [esp], eax |
1493 | @@: |
1490 | @@: |
1494 | mov edi, [esp+4] |
1491 | mov edi, [esp+4] |
1495 | inc ecx |
1492 | inc ecx |
1496 | ; write data |
1493 | ; write data |
1497 | push ecx edi |
1494 | push ecx edi |
1498 | mov ecx, 512 |
1495 | mov ecx, 512 |
1499 | cmp dword [esp+20], ecx |
1496 | cmp dword [esp+20], ecx |
1500 | jae @f |
1497 | jae @f |
1501 | mov ecx, [esp+20] |
1498 | mov ecx, [esp+20] |
1502 | @@: |
1499 | @@: |
1503 | mov edi, FDD_BUFF |
1500 | mov edi, FDD_BUFF |
1504 | cmp byte [esp+24+28+28], 0 |
1501 | cmp byte [esp+24+28+28], 0 |
1505 | jnz .writedir |
1502 | jnz .writedir |
1506 | push ecx |
1503 | push ecx |
1507 | rep movsb |
1504 | rep movsb |
1508 | pop ecx |
1505 | pop ecx |
1509 | .writedircont: |
1506 | .writedircont: |
1510 | push ecx |
1507 | push ecx |
1511 | sub ecx, 512 |
1508 | sub ecx, 512 |
1512 | neg ecx |
1509 | neg ecx |
1513 | push eax |
1510 | push eax |
1514 | xor eax, eax |
1511 | xor eax, eax |
1515 | rep stosb |
1512 | rep stosb |
1516 | pop eax |
1513 | pop eax |
1517 | add eax, 31 |
1514 | add eax, 31 |
1518 | pusha |
1515 | pusha |
1519 | call save_chs_sector |
1516 | call save_chs_sector |
1520 | popa |
1517 | popa |
1521 | pop ecx |
1518 | pop ecx |
1522 | cmp [FDC_Status], 0 |
1519 | cmp [FDC_Status], 0 |
1523 | jnz .diskerr |
1520 | jnz .diskerr |
1524 | sub [esp+20], ecx |
1521 | sub [esp+20], ecx |
1525 | pop edi ecx |
1522 | pop edi ecx |
1526 | jnz .write_loop |
1523 | jnz .write_loop |
1527 | .done: |
1524 | .done: |
1528 | xor eax, eax |
1525 | xor eax, eax |
1529 | .ret: |
1526 | .ret: |
1530 | pop ebx edi edi ecx |
1527 | pop ebx edi edi ecx |
1531 | mov [esp+28+28], eax |
1528 | mov [esp+28+28], eax |
1532 | lea eax, [esp+8] |
1529 | lea eax, [esp+8] |
1533 | call dword [eax+4] |
1530 | call dword [eax+4] |
1534 | mov [edi+26], bx |
1531 | mov [edi+26], bx |
1535 | mov ebx, esi |
1532 | mov ebx, esi |
1536 | sub ebx, edx |
1533 | sub ebx, edx |
1537 | mov [edi+28], ebx |
1534 | mov [edi+28], ebx |
1538 | call dword [eax+12] |
1535 | call dword [eax+12] |
1539 | mov [esp+28+16], ebx |
1536 | mov [esp+28+16], ebx |
1540 | test ebp, ebp |
1537 | test ebp, ebp |
1541 | jnz @f |
1538 | jnz @f |
1542 | call save_flp_root |
1539 | call save_flp_root |
1543 | @@: |
1540 | @@: |
1544 | add esp, 28 |
1541 | add esp, 28 |
1545 | cmp [FDC_Status], 0 |
1542 | cmp [FDC_Status], 0 |
1546 | jnz .err3 |
1543 | jnz .err3 |
1547 | call save_flp_fat |
1544 | call save_flp_fat |
1548 | cmp [FDC_Status], 0 |
1545 | cmp [FDC_Status], 0 |
1549 | jnz .err3 |
1546 | jnz .err3 |
1550 | popa |
1547 | popa |
1551 | ret |
1548 | ret |
1552 | .err3: |
1549 | .err3: |
1553 | popa |
1550 | popa |
1554 | mov al, 11 |
1551 | mov al, 11 |
1555 | xor ebx, ebx |
1552 | xor ebx, ebx |
1556 | ret |
1553 | ret |
1557 | .diskerr: |
1554 | .diskerr: |
1558 | sub esi, ecx |
1555 | sub esi, ecx |
1559 | mov eax, 11 |
1556 | mov eax, 11 |
1560 | pop edi ecx |
1557 | pop edi ecx |
1561 | jmp .ret |
1558 | jmp .ret |
1562 | .writedir: |
1559 | .writedir: |
1563 | push ecx |
1560 | push ecx |
1564 | mov ecx, 32/4 |
1561 | mov ecx, 32/4 |
1565 | push ecx esi |
1562 | push ecx esi |
1566 | rep movsd |
1563 | rep movsd |
1567 | pop esi ecx |
1564 | pop esi ecx |
1568 | mov dword [edi-32], '. ' |
1565 | mov dword [edi-32], '. ' |
1569 | mov dword [edi-32+4], ' ' |
1566 | mov dword [edi-32+4], ' ' |
1570 | mov dword [edi-32+8], ' ' |
1567 | mov dword [edi-32+8], ' ' |
1571 | mov byte [edi-32+11], 10h |
1568 | mov byte [edi-32+11], 10h |
1572 | mov word [edi-32+26], ax |
1569 | mov word [edi-32+26], ax |
1573 | push esi |
1570 | push esi |
1574 | rep movsd |
1571 | rep movsd |
1575 | pop esi |
1572 | pop esi |
1576 | mov dword [edi-32], '.. ' |
1573 | mov dword [edi-32], '.. ' |
1577 | mov dword [edi-32+4], ' ' |
1574 | mov dword [edi-32+4], ' ' |
1578 | mov dword [edi-32+8], ' ' |
1575 | mov dword [edi-32+8], ' ' |
1579 | mov byte [edi-32+11], 10h |
1576 | mov byte [edi-32+11], 10h |
1580 | mov ecx, [esp+28+8] |
1577 | mov ecx, [esp+28+8] |
1581 | mov word [edi-32+26], cx |
1578 | mov word [edi-32+26], cx |
1582 | pop ecx |
1579 | pop ecx |
1583 | jmp .writedircont |
1580 | jmp .writedircont |
1584 | 1581 | ||
1585 | ;---------------------------------------------------------------- |
1582 | ;---------------------------------------------------------------- |
1586 | ; |
1583 | ; |
1587 | ; fs_FloppyWrite - LFN variant for writing to floppy |
1584 | ; fs_FloppyWrite - LFN variant for writing to floppy |
1588 | ; |
1585 | ; |
1589 | ; esi points to filename |
1586 | ; esi points to filename |
1590 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1587 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
1591 | ; may be ebx=0 - start from first byte |
1588 | ; may be ebx=0 - start from first byte |
1592 | ; ecx number of bytes to write, 0+ |
1589 | ; ecx number of bytes to write, 0+ |
1593 | ; edx mem location to data |
1590 | ; edx mem location to data |
1594 | ; |
1591 | ; |
1595 | ; ret ebx = bytes written (maybe 0) |
1592 | ; ret ebx = bytes written (maybe 0) |
1596 | ; eax = 0 ok write or other = errormsg |
1593 | ; eax = 0 ok write or other = errormsg |
1597 | ; |
1594 | ; |
1598 | ;-------------------------------------------------------------- |
1595 | ;-------------------------------------------------------------- |
1599 | 1596 | ||
1600 | @@: |
1597 | @@: |
1601 | push ERROR_ACCESS_DENIED |
1598 | push ERROR_ACCESS_DENIED |
1602 | fs_FloppyWrite.ret0: |
1599 | fs_FloppyWrite.ret0: |
1603 | pop eax |
1600 | pop eax |
1604 | xor ebx, ebx |
1601 | xor ebx, ebx |
1605 | ret |
1602 | ret |
1606 | 1603 | ||
1607 | fs_FloppyWrite.ret11: |
1604 | fs_FloppyWrite.ret11: |
1608 | push 11 |
1605 | push 11 |
1609 | jmp fs_FloppyWrite.ret0 |
1606 | jmp fs_FloppyWrite.ret0 |
1610 | 1607 | ||
1611 | fs_FloppyWrite: |
1608 | fs_FloppyWrite: |
1612 | cmp byte [esi], 0 |
1609 | cmp byte [esi], 0 |
1613 | jz @b |
1610 | jz @b |
1614 | call read_flp_fat |
1611 | call read_flp_fat |
1615 | cmp [FDC_Status], 0 |
1612 | cmp [FDC_Status], 0 |
1616 | jnz .ret11 |
1613 | jnz .ret11 |
1617 | pushad |
1614 | pushad |
1618 | call fd_find_lfn |
1615 | call fd_find_lfn |
1619 | jnc .found |
1616 | jnc .found |
1620 | popad |
1617 | popad |
1621 | push ERROR_FILE_NOT_FOUND |
1618 | push ERROR_FILE_NOT_FOUND |
1622 | jmp .ret0 |
1619 | jmp .ret0 |
1623 | .found: |
1620 | .found: |
1624 | ; FAT does not support files larger than 4GB |
1621 | ; FAT does not support files larger than 4GB |
1625 | test ebx, ebx |
1622 | test ebx, ebx |
1626 | jz .l1 |
1623 | jz .l1 |
1627 | cmp dword [ebx+4], 0 |
1624 | cmp dword [ebx+4], 0 |
1628 | jz @f |
1625 | jz @f |
1629 | .eof: |
1626 | .eof: |
1630 | popad |
1627 | popad |
1631 | push ERROR_END_OF_FILE |
1628 | push ERROR_END_OF_FILE |
1632 | jmp .ret0 |
1629 | jmp .ret0 |
1633 | @@: |
1630 | @@: |
1634 | mov ebx, [ebx] |
1631 | mov ebx, [ebx] |
1635 | .l1: |
1632 | .l1: |
1636 | ; now edi points to direntry, ebx=start byte to write, |
1633 | ; now edi points to direntry, ebx=start byte to write, |
1637 | ; ecx=number of bytes to write, edx=data pointer |
1634 | ; ecx=number of bytes to write, edx=data pointer |
1638 | 1635 | ||
1639 | ; extend file if needed |
1636 | ; extend file if needed |
1640 | add ecx, ebx |
1637 | add ecx, ebx |
1641 | jc .eof ; FAT does not support files larger than 4GB |
1638 | jc .eof ; FAT does not support files larger than 4GB |
1642 | push eax ; save directory cluster |
1639 | push eax ; save directory cluster |
1643 | push 0 ; return value=0 |
1640 | push 0 ; return value=0 |
1644 | 1641 | ||
1645 | call get_time_for_file |
1642 | call get_time_for_file |
1646 | mov [edi+22], ax ; last write time |
1643 | mov [edi+22], ax ; last write time |
1647 | call get_date_for_file |
1644 | call get_date_for_file |
1648 | mov [edi+24], ax ; last write date |
1645 | mov [edi+24], ax ; last write date |
1649 | mov [edi+18], ax ; last access date |
1646 | mov [edi+18], ax ; last access date |
1650 | 1647 | ||
1651 | push dword [edi+28] ; save current file size |
1648 | push dword [edi+28] ; save current file size |
1652 | cmp ecx, [edi+28] |
1649 | cmp ecx, [edi+28] |
1653 | jbe .length_ok |
1650 | jbe .length_ok |
1654 | cmp ecx, ebx |
1651 | cmp ecx, ebx |
1655 | jz .length_ok |
1652 | jz .length_ok |
1656 | call floppy_extend_file |
1653 | call floppy_extend_file |
1657 | jnc .length_ok |
1654 | jnc .length_ok |
1658 | mov [esp+4], eax |
1655 | mov [esp+4], eax |
1659 | ; floppy_extend_file can return two error codes: FAT table error or disk full. |
1656 | ; floppy_extend_file can return two error codes: FAT table error or disk full. |
1660 | ; First case is fatal error, in second case we may write some data |
1657 | ; First case is fatal error, in second case we may write some data |
1661 | cmp al, ERROR_DISK_FULL |
1658 | cmp al, ERROR_DISK_FULL |
1662 | jz .disk_full |
1659 | jz .disk_full |
1663 | pop eax |
1660 | pop eax |
1664 | pop eax |
1661 | pop eax |
1665 | mov [esp+4+28], eax |
1662 | mov [esp+4+28], eax |
1666 | pop eax |
1663 | pop eax |
1667 | popad |
1664 | popad |
1668 | xor ebx, ebx |
1665 | xor ebx, ebx |
1669 | ret |
1666 | ret |
1670 | .disk_full: |
1667 | .disk_full: |
1671 | ; correct number of bytes to write |
1668 | ; correct number of bytes to write |
1672 | mov ecx, [edi+28] |
1669 | mov ecx, [edi+28] |
1673 | cmp ecx, ebx |
1670 | cmp ecx, ebx |
1674 | ja .length_ok |
1671 | ja .length_ok |
1675 | .ret: |
1672 | .ret: |
1676 | pop eax |
1673 | pop eax |
1677 | pop eax |
1674 | pop eax |
1678 | mov [esp+4+28], eax ; eax=return value |
1675 | mov [esp+4+28], eax ; eax=return value |
1679 | pop eax |
1676 | pop eax |
1680 | sub edx, [esp+20] |
1677 | sub edx, [esp+20] |
1681 | mov [esp+16], edx ; ebx=number of written bytes |
1678 | mov [esp+16], edx ; ebx=number of written bytes |
1682 | popad |
1679 | popad |
1683 | ret |
1680 | ret |
1684 | .length_ok: |
1681 | .length_ok: |
1685 | ; save FAT & directory |
1682 | ; save FAT & directory |
1686 | ; note that directory must be saved first because save_flp_fat uses buffer at 0xD000 |
1683 | ; note that directory must be saved first because save_flp_fat uses buffer at 0xD000 |
1687 | mov esi, [edi+28] |
1684 | mov esi, [edi+28] |
1688 | movzx edi, word [edi+26] ; starting cluster |
1685 | movzx edi, word [edi+26] ; starting cluster |
1689 | mov eax, [esp+8] |
1686 | mov eax, [esp+8] |
1690 | pusha |
1687 | pusha |
1691 | call save_chs_sector |
1688 | call save_chs_sector |
1692 | popa |
1689 | popa |
1693 | cmp [FDC_Status], 0 |
1690 | cmp [FDC_Status], 0 |
1694 | jnz .device_err |
1691 | jnz .device_err |
1695 | call save_flp_fat |
1692 | call save_flp_fat |
1696 | cmp [FDC_Status], 0 |
1693 | cmp [FDC_Status], 0 |
1697 | jz @f |
1694 | jz @f |
1698 | .device_err: |
1695 | .device_err: |
1699 | mov byte [esp+4], 11 |
1696 | mov byte [esp+4], 11 |
1700 | jmp .ret |
1697 | jmp .ret |
1701 | @@: |
1698 | @@: |
1702 | 1699 | ||
1703 | ; now ebx=start pos, ecx=end pos, both lie inside file |
1700 | ; now ebx=start pos, ecx=end pos, both lie inside file |
1704 | sub ecx, ebx |
1701 | sub ecx, ebx |
1705 | jz .ret |
1702 | jz .ret |
1706 | call SetUserInterrupts |
- | |
- | 1703 | ||
1707 | .write_loop: |
1704 | .write_loop: |
1708 | ; skip unmodified sectors |
1705 | ; skip unmodified sectors |
1709 | cmp dword [esp], 0x200 |
1706 | cmp dword [esp], 0x200 |
1710 | jb .modify |
1707 | jb .modify |
1711 | sub ebx, 0x200 |
1708 | sub ebx, 0x200 |
1712 | jae .skip |
1709 | jae .skip |
1713 | add ebx, 0x200 |
1710 | add ebx, 0x200 |
1714 | .modify: |
1711 | .modify: |
1715 | lea eax, [edi+31] ; current sector |
1712 | lea eax, [edi+31] ; current sector |
1716 | ; get length of data in current sector |
1713 | ; get length of data in current sector |
1717 | push ecx |
1714 | push ecx |
1718 | sub ebx, 0x200 |
1715 | sub ebx, 0x200 |
1719 | jb .hasdata |
1716 | jb .hasdata |
1720 | neg ebx |
1717 | neg ebx |
1721 | xor ecx, ecx |
1718 | xor ecx, ecx |
1722 | jmp @f |
1719 | jmp @f |
1723 | .hasdata: |
1720 | .hasdata: |
1724 | neg ebx |
1721 | neg ebx |
1725 | cmp ecx, ebx |
1722 | cmp ecx, ebx |
1726 | jbe @f |
1723 | jbe @f |
1727 | mov ecx, ebx |
1724 | mov ecx, ebx |
1728 | @@: |
1725 | @@: |
1729 | ; load sector if needed |
1726 | ; load sector if needed |
1730 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
1727 | cmp dword [esp+4], 0 ; we don't need to read uninitialized data |
1731 | jz .noread |
1728 | jz .noread |
1732 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
1729 | cmp ecx, 0x200 ; we don't need to read sector if it is fully rewritten |
1733 | jz .noread |
1730 | jz .noread |
1734 | cmp ecx, esi ; (same for the last sector) |
1731 | cmp ecx, esi ; (same for the last sector) |
1735 | jz .noread |
1732 | jz .noread |
1736 | pusha |
1733 | pusha |
1737 | call read_chs_sector |
1734 | call read_chs_sector |
1738 | popa |
1735 | popa |
1739 | cmp [FDC_Status], 0 |
1736 | cmp [FDC_Status], 0 |
1740 | jz @f |
1737 | jz @f |
1741 | .device_err2: |
1738 | .device_err2: |
1742 | pop ecx |
1739 | pop ecx |
1743 | jmp .device_err |
1740 | jmp .device_err |
1744 | @@: |
1741 | @@: |
1745 | .noread: |
1742 | .noread: |
1746 | ; zero uninitialized data if file was extended (because floppy_extend_file does not this) |
1743 | ; zero uninitialized data if file was extended (because floppy_extend_file does not this) |
1747 | push eax ecx edi |
1744 | push eax ecx edi |
1748 | xor eax, eax |
1745 | xor eax, eax |
1749 | mov ecx, 0x200 |
1746 | mov ecx, 0x200 |
1750 | sub ecx, [esp+4+12] |
1747 | sub ecx, [esp+4+12] |
1751 | jbe @f |
1748 | jbe @f |
1752 | mov edi, FDD_BUFF |
1749 | mov edi, FDD_BUFF |
1753 | add edi, [esp+4+12] |
1750 | add edi, [esp+4+12] |
1754 | rep stosb |
1751 | rep stosb |
1755 | @@: |
1752 | @@: |
1756 | ; zero uninitialized data in the last sector |
1753 | ; zero uninitialized data in the last sector |
1757 | mov ecx, 0x200 |
1754 | mov ecx, 0x200 |
1758 | sub ecx, esi |
1755 | sub ecx, esi |
1759 | jbe @f |
1756 | jbe @f |
1760 | mov edi, FDD_BUFF |
1757 | mov edi, FDD_BUFF |
1761 | add edi, esi |
1758 | add edi, esi |
1762 | rep stosb |
1759 | rep stosb |
1763 | @@: |
1760 | @@: |
1764 | pop edi ecx eax |
1761 | pop edi ecx eax |
1765 | ; copy new data |
1762 | ; copy new data |
1766 | push eax |
1763 | push eax |
1767 | mov eax, edx |
1764 | mov eax, edx |
1768 | neg ebx |
1765 | neg ebx |
1769 | jecxz @f |
1766 | jecxz @f |
1770 | add ebx, FDD_BUFF+0x200 |
1767 | add ebx, FDD_BUFF+0x200 |
1771 | call memmove |
1768 | call memmove |
1772 | xor ebx, ebx |
1769 | xor ebx, ebx |
1773 | @@: |
1770 | @@: |
1774 | pop eax |
1771 | pop eax |
1775 | ; save sector |
1772 | ; save sector |
1776 | pusha |
1773 | pusha |
1777 | call save_chs_sector |
1774 | call save_chs_sector |
1778 | popa |
1775 | popa |
1779 | cmp [FDC_Status], 0 |
1776 | cmp [FDC_Status], 0 |
1780 | jnz .device_err2 |
1777 | jnz .device_err2 |
1781 | add edx, ecx |
1778 | add edx, ecx |
1782 | sub [esp], ecx |
1779 | sub [esp], ecx |
1783 | pop ecx |
1780 | pop ecx |
1784 | jz .done |
1781 | jz .done |
1785 | .skip: |
1782 | .skip: |
1786 | .next_cluster: |
1783 | .next_cluster: |
1787 | movzx edi, word [edi*2+FLOPPY_FAT] |
1784 | movzx edi, word [edi*2+FLOPPY_FAT] |
1788 | sub esi, 0x200 |
1785 | sub esi, 0x200 |
1789 | jae @f |
1786 | jae @f |
1790 | xor esi, esi |
1787 | xor esi, esi |
1791 | @@: |
1788 | @@: |
1792 | sub dword [esp], 0x200 |
1789 | sub dword [esp], 0x200 |
1793 | jae .write_loop |
1790 | jae .write_loop |
1794 | and dword [esp], 0 |
1791 | and dword [esp], 0 |
1795 | jmp .write_loop |
1792 | jmp .write_loop |
1796 | .done: |
1793 | .done: |
1797 | mov [fdc_irq_func], fdc_null |
- | |
1798 | jmp .ret |
1794 | jmp .ret |
1799 | 1795 | ||
1800 | floppy_extend_file.zero_size: |
1796 | floppy_extend_file.zero_size: |
1801 | xor eax, eax |
1797 | xor eax, eax |
1802 | jmp floppy_extend_file.start_extend |
1798 | jmp floppy_extend_file.start_extend |
1803 | 1799 | ||
1804 | ; extends file on floppy to given size (new data area is undefined) |
1800 | ; extends file on floppy to given size (new data area is undefined) |
1805 | ; in: edi->direntry, ecx=new size |
1801 | ; in: edi->direntry, ecx=new size |
1806 | ; out: CF=0 => OK, eax=0 |
1802 | ; out: CF=0 => OK, eax=0 |
1807 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL) |
1803 | ; CF=1 => error, eax=code (ERROR_FAT_TABLE or ERROR_DISK_FULL) |
1808 | floppy_extend_file: |
1804 | floppy_extend_file: |
1809 | push ecx |
1805 | push ecx |
1810 | ; find the last cluster of file |
1806 | ; find the last cluster of file |
1811 | movzx eax, word [edi+26] ; first cluster |
1807 | movzx eax, word [edi+26] ; first cluster |
1812 | mov ecx, [edi+28] |
1808 | mov ecx, [edi+28] |
1813 | jecxz .zero_size |
1809 | jecxz .zero_size |
1814 | @@: |
1810 | @@: |
1815 | sub ecx, 0x200 |
1811 | sub ecx, 0x200 |
1816 | jbe @f |
1812 | jbe @f |
1817 | mov eax, [eax*2+FLOPPY_FAT] |
1813 | mov eax, [eax*2+FLOPPY_FAT] |
1818 | and eax, 0xFFF |
1814 | and eax, 0xFFF |
1819 | jz .fat_err |
1815 | jz .fat_err |
1820 | cmp eax, 0xFF8 |
1816 | cmp eax, 0xFF8 |
1821 | jb @b |
1817 | jb @b |
1822 | .fat_err: |
1818 | .fat_err: |
1823 | pop ecx |
1819 | pop ecx |
1824 | movi eax, ERROR_FAT_TABLE |
1820 | movi eax, ERROR_FAT_TABLE |
1825 | stc |
1821 | stc |
1826 | ret |
1822 | ret |
1827 | @@: |
1823 | @@: |
1828 | push eax |
1824 | push eax |
1829 | mov eax, [eax*2+FLOPPY_FAT] |
1825 | mov eax, [eax*2+FLOPPY_FAT] |
1830 | and eax, 0xFFF |
1826 | and eax, 0xFFF |
1831 | cmp eax, 0xFF8 |
1827 | cmp eax, 0xFF8 |
1832 | pop eax |
1828 | pop eax |
1833 | jb .fat_err |
1829 | jb .fat_err |
1834 | ; set length to full number of sectors |
1830 | ; set length to full number of sectors |
1835 | sub [edi+28], ecx |
1831 | sub [edi+28], ecx |
1836 | .start_extend: |
1832 | .start_extend: |
1837 | pop ecx |
1833 | pop ecx |
1838 | ; now do extend |
1834 | ; now do extend |
1839 | push edx esi |
1835 | push edx esi |
1840 | mov esi, FLOPPY_FAT+2*2 ; start scan from cluster 2 |
1836 | mov esi, FLOPPY_FAT+2*2 ; start scan from cluster 2 |
1841 | mov edx, 2847 ; number of clusters to scan |
1837 | mov edx, 2847 ; number of clusters to scan |
1842 | .extend_loop: |
1838 | .extend_loop: |
1843 | cmp [edi+28], ecx |
1839 | cmp [edi+28], ecx |
1844 | jae .extend_done |
1840 | jae .extend_done |
1845 | ; add new sector |
1841 | ; add new sector |
1846 | push ecx |
1842 | push ecx |
1847 | push edi |
1843 | push edi |
1848 | .scan: |
1844 | .scan: |
1849 | mov ecx, edx |
1845 | mov ecx, edx |
1850 | mov edi, esi |
1846 | mov edi, esi |
1851 | jecxz .disk_full |
1847 | jecxz .disk_full |
1852 | push eax |
1848 | push eax |
1853 | xor eax, eax |
1849 | xor eax, eax |
1854 | repnz scasw |
1850 | repnz scasw |
1855 | pop eax |
1851 | pop eax |
1856 | jnz .disk_full |
1852 | jnz .disk_full |
1857 | mov word [edi-2], 0xFFF |
1853 | mov word [edi-2], 0xFFF |
1858 | mov esi, edi |
1854 | mov esi, edi |
1859 | mov edx, ecx |
1855 | mov edx, ecx |
1860 | sub edi, FLOPPY_FAT |
1856 | sub edi, FLOPPY_FAT |
1861 | shr edi, 1 |
1857 | shr edi, 1 |
1862 | dec edi ; now edi=new cluster |
1858 | dec edi ; now edi=new cluster |
1863 | test eax, eax |
1859 | test eax, eax |
1864 | jz .first_cluster |
1860 | jz .first_cluster |
1865 | mov [FLOPPY_FAT+eax*2], di |
1861 | mov [FLOPPY_FAT+eax*2], di |
1866 | jmp @f |
1862 | jmp @f |
1867 | .first_cluster: |
1863 | .first_cluster: |
1868 | pop eax ; eax->direntry |
1864 | pop eax ; eax->direntry |
1869 | push eax |
1865 | push eax |
1870 | mov [eax+26], di |
1866 | mov [eax+26], di |
1871 | @@: |
1867 | @@: |
1872 | mov eax, edi ; eax=new cluster |
1868 | mov eax, edi ; eax=new cluster |
1873 | pop edi ; edi->direntry |
1869 | pop edi ; edi->direntry |
1874 | pop ecx ; ecx=required size |
1870 | pop ecx ; ecx=required size |
1875 | add dword [edi+28], 0x200 |
1871 | add dword [edi+28], 0x200 |
1876 | jmp .extend_loop |
1872 | jmp .extend_loop |
1877 | .extend_done: |
1873 | .extend_done: |
1878 | mov [edi+28], ecx |
1874 | mov [edi+28], ecx |
1879 | pop esi edx |
1875 | pop esi edx |
1880 | xor eax, eax ; CF=0 |
1876 | xor eax, eax ; CF=0 |
1881 | ret |
1877 | ret |
1882 | .disk_full: |
1878 | .disk_full: |
1883 | pop edi ecx |
1879 | pop edi ecx |
1884 | pop esi edx |
1880 | pop esi edx |
1885 | stc |
1881 | stc |
1886 | movi eax, ERROR_DISK_FULL |
1882 | movi eax, ERROR_DISK_FULL |
1887 | ret |
1883 | ret |
1888 | 1884 | ||
1889 | ;---------------------------------------------------------------- |
1885 | ;---------------------------------------------------------------- |
1890 | ; |
1886 | ; |
1891 | ; fs_FloppySetFileEnd - set end of file on floppy |
1887 | ; fs_FloppySetFileEnd - set end of file on floppy |
1892 | ; |
1888 | ; |
1893 | ; esi points to filename |
1889 | ; esi points to filename |
1894 | ; ebx points to 64-bit number = new file size |
1890 | ; ebx points to 64-bit number = new file size |
1895 | ; ecx ignored (reserved) |
1891 | ; ecx ignored (reserved) |
1896 | ; edx ignored (reserved) |
1892 | ; edx ignored (reserved) |
1897 | ; |
1893 | ; |
1898 | ; ret eax = 0 ok or other = errormsg |
1894 | ; ret eax = 0 ok or other = errormsg |
1899 | ; |
1895 | ; |
1900 | ;-------------------------------------------------------------- |
1896 | ;-------------------------------------------------------------- |
1901 | fs_FloppySetFileEnd: |
1897 | fs_FloppySetFileEnd: |
1902 | call read_flp_fat |
1898 | call read_flp_fat |
1903 | cmp [FDC_Status], 0 |
1899 | cmp [FDC_Status], 0 |
1904 | jnz ret11 |
1900 | jnz ret11 |
1905 | cmp byte [esi], 0 |
1901 | cmp byte [esi], 0 |
1906 | jnz @f |
1902 | jnz @f |
1907 | .access_denied: |
1903 | .access_denied: |
1908 | push ERROR_ACCESS_DENIED |
1904 | push ERROR_ACCESS_DENIED |
1909 | jmp .ret |
1905 | jmp .ret |
1910 | @@: |
1906 | @@: |
1911 | push edi |
1907 | push edi |
1912 | call fd_find_lfn |
1908 | call fd_find_lfn |
1913 | jnc @f |
1909 | jnc @f |
1914 | pop edi |
1910 | pop edi |
1915 | push ERROR_FILE_NOT_FOUND |
1911 | push ERROR_FILE_NOT_FOUND |
1916 | .ret: |
1912 | .ret: |
1917 | pop eax |
1913 | pop eax |
1918 | jmp .doret |
1914 | jmp .doret |
1919 | @@: |
1915 | @@: |
1920 | ; must not be directory |
1916 | ; must not be directory |
1921 | test byte [edi+11], 10h |
1917 | test byte [edi+11], 10h |
1922 | jz @f |
1918 | jz @f |
1923 | pop edi |
1919 | pop edi |
1924 | jmp .access_denied |
1920 | jmp .access_denied |
1925 | @@: |
1921 | @@: |
1926 | ; file size must not exceed 4 Gb |
1922 | ; file size must not exceed 4 Gb |
1927 | cmp dword [ebx+4], 0 |
1923 | cmp dword [ebx+4], 0 |
1928 | jz @f |
1924 | jz @f |
1929 | pop edi |
1925 | pop edi |
1930 | push ERROR_END_OF_FILE |
1926 | push ERROR_END_OF_FILE |
1931 | jmp .ret |
1927 | jmp .ret |
1932 | @@: |
1928 | @@: |
1933 | push eax |
1929 | push eax |
1934 | ; set file modification date/time to current |
1930 | ; set file modification date/time to current |
1935 | call fat_update_datetime |
1931 | call fat_update_datetime |
1936 | mov eax, [ebx] |
1932 | mov eax, [ebx] |
1937 | cmp eax, [edi+28] |
1933 | cmp eax, [edi+28] |
1938 | jb .truncate |
1934 | jb .truncate |
1939 | ja .expand |
1935 | ja .expand |
1940 | pop eax |
1936 | pop eax |
1941 | pushad |
1937 | pushad |
1942 | call save_chs_sector |
1938 | call save_chs_sector |
1943 | popad |
1939 | popad |
1944 | pop edi |
1940 | pop edi |
1945 | xor eax, eax |
1941 | xor eax, eax |
1946 | cmp [FDC_Status], 0 |
1942 | cmp [FDC_Status], 0 |
1947 | jz @f |
1943 | jz @f |
1948 | mov al, 11 |
1944 | mov al, 11 |
1949 | @@: |
1945 | @@: |
1950 | .doret: |
1946 | .doret: |
1951 | mov [fdc_irq_func], fdc_null |
- | |
1952 | ret |
1947 | ret |
1953 | .expand: |
1948 | .expand: |
1954 | push ecx |
1949 | push ecx |
1955 | push dword [edi+28] ; save old size |
1950 | push dword [edi+28] ; save old size |
1956 | mov ecx, eax |
1951 | mov ecx, eax |
1957 | call floppy_extend_file |
1952 | call floppy_extend_file |
1958 | push eax ; return code |
1953 | push eax ; return code |
1959 | jnc .expand_ok |
1954 | jnc .expand_ok |
1960 | cmp al, ERROR_DISK_FULL |
1955 | cmp al, ERROR_DISK_FULL |
1961 | jz .disk_full |
1956 | jz .disk_full |
1962 | pop eax ecx ecx edi edi |
1957 | pop eax ecx ecx edi edi |
1963 | jmp .doret |
1958 | jmp .doret |
1964 | .device_err: |
1959 | .device_err: |
1965 | pop eax |
1960 | pop eax |
1966 | .device_err2: |
1961 | .device_err2: |
1967 | pop ecx ecx eax edi |
1962 | pop ecx ecx eax edi |
1968 | push 11 |
1963 | push 11 |
1969 | jmp .ret |
1964 | jmp .ret |
1970 | .disk_full: |
1965 | .disk_full: |
1971 | .expand_ok: |
1966 | .expand_ok: |
1972 | ; save directory & FAT |
1967 | ; save directory & FAT |
1973 | mov eax, [edi+28] |
1968 | mov eax, [edi+28] |
1974 | xchg eax, [esp+12] |
1969 | xchg eax, [esp+12] |
1975 | movzx edi, word [edi+26] |
1970 | movzx edi, word [edi+26] |
1976 | pusha |
1971 | pusha |
1977 | call save_chs_sector |
1972 | call save_chs_sector |
1978 | popa |
1973 | popa |
1979 | cmp [FDC_Status], 0 |
1974 | cmp [FDC_Status], 0 |
1980 | jnz .device_err |
1975 | jnz .device_err |
1981 | call save_flp_fat |
1976 | call save_flp_fat |
1982 | cmp [FDC_Status], 0 |
1977 | cmp [FDC_Status], 0 |
1983 | jnz .device_err |
1978 | jnz .device_err |
1984 | call SetUserInterrupts |
- | |
1985 | ; now zero new data |
1979 | ; now zero new data |
1986 | ; edi = current cluster, [esp+12]=new size, [esp+4]=old size, [esp]=return code |
1980 | ; edi = current cluster, [esp+12]=new size, [esp+4]=old size, [esp]=return code |
1987 | .zero_loop: |
1981 | .zero_loop: |
1988 | sub dword [esp+4], 0x200 |
1982 | sub dword [esp+4], 0x200 |
1989 | jae .next_cluster |
1983 | jae .next_cluster |
1990 | cmp dword [esp+4], -0x200 |
1984 | cmp dword [esp+4], -0x200 |
1991 | jz .noread |
1985 | jz .noread |
1992 | lea eax, [edi+31] |
1986 | lea eax, [edi+31] |
1993 | pusha |
1987 | pusha |
1994 | call read_chs_sector |
1988 | call read_chs_sector |
1995 | popa |
1989 | popa |
1996 | cmp [FDC_Status], 0 |
1990 | cmp [FDC_Status], 0 |
1997 | jnz .err_next |
1991 | jnz .err_next |
1998 | .noread: |
1992 | .noread: |
1999 | mov ecx, [esp+4] |
1993 | mov ecx, [esp+4] |
2000 | neg ecx |
1994 | neg ecx |
2001 | push edi |
1995 | push edi |
2002 | mov edi, FDD_BUFF+0x200 |
1996 | mov edi, FDD_BUFF+0x200 |
2003 | add edi, [esp+8] |
1997 | add edi, [esp+8] |
2004 | xor eax, eax |
1998 | xor eax, eax |
2005 | mov [esp+8], eax |
1999 | mov [esp+8], eax |
2006 | rep stosb |
2000 | rep stosb |
2007 | pop edi |
2001 | pop edi |
2008 | lea eax, [edi+31] |
2002 | lea eax, [edi+31] |
2009 | pusha |
2003 | pusha |
2010 | call save_chs_sector |
2004 | call save_chs_sector |
2011 | popa |
2005 | popa |
2012 | cmp [FDC_Status], 0 |
2006 | cmp [FDC_Status], 0 |
2013 | jz .next_cluster |
2007 | jz .next_cluster |
2014 | .err_next: |
2008 | .err_next: |
2015 | mov byte [esp], 11 |
2009 | mov byte [esp], 11 |
2016 | .next_cluster: |
2010 | .next_cluster: |
2017 | sub dword [esp+12], 0x200 |
2011 | sub dword [esp+12], 0x200 |
2018 | jbe .expand_done |
2012 | jbe .expand_done |
2019 | movzx edi, word [FLOPPY_FAT+edi*2] |
2013 | movzx edi, word [FLOPPY_FAT+edi*2] |
2020 | jmp .zero_loop |
2014 | jmp .zero_loop |
2021 | .expand_done: |
2015 | .expand_done: |
2022 | pop eax ecx ecx edi edi |
2016 | pop eax ecx ecx edi edi |
2023 | jmp .doret |
2017 | jmp .doret |
2024 | .truncate: |
2018 | .truncate: |
2025 | mov [edi+28], eax |
2019 | mov [edi+28], eax |
2026 | push ecx |
2020 | push ecx |
2027 | movzx ecx, word [edi+26] |
2021 | movzx ecx, word [edi+26] |
2028 | test eax, eax |
2022 | test eax, eax |
2029 | jz .zero_size |
2023 | jz .zero_size |
2030 | ; find new last sector |
2024 | ; find new last sector |
2031 | @@: |
2025 | @@: |
2032 | sub eax, 0x200 |
2026 | sub eax, 0x200 |
2033 | jbe @f |
2027 | jbe @f |
2034 | movzx ecx, word [FLOPPY_FAT+ecx*2] |
2028 | movzx ecx, word [FLOPPY_FAT+ecx*2] |
2035 | jmp @b |
2029 | jmp @b |
2036 | @@: |
2030 | @@: |
2037 | ; we will zero data at the end of last sector - remember it |
2031 | ; we will zero data at the end of last sector - remember it |
2038 | push ecx |
2032 | push ecx |
2039 | ; terminate FAT chain |
2033 | ; terminate FAT chain |
2040 | lea ecx, [FLOPPY_FAT+ecx+ecx] |
2034 | lea ecx, [FLOPPY_FAT+ecx+ecx] |
2041 | push dword [ecx] |
2035 | push dword [ecx] |
2042 | mov word [ecx], 0xFFF |
2036 | mov word [ecx], 0xFFF |
2043 | pop ecx |
2037 | pop ecx |
2044 | and ecx, 0xFFF |
2038 | and ecx, 0xFFF |
2045 | jmp .delete |
2039 | jmp .delete |
2046 | .zero_size: |
2040 | .zero_size: |
2047 | and word [edi+26], 0 |
2041 | and word [edi+26], 0 |
2048 | push 0 |
2042 | push 0 |
2049 | .delete: |
2043 | .delete: |
2050 | ; delete FAT chain starting with ecx |
2044 | ; delete FAT chain starting with ecx |
2051 | ; mark all clusters as free |
2045 | ; mark all clusters as free |
2052 | cmp ecx, 0xFF8 |
2046 | cmp ecx, 0xFF8 |
2053 | jae .deleted |
2047 | jae .deleted |
2054 | lea ecx, [FLOPPY_FAT+ecx+ecx] |
2048 | lea ecx, [FLOPPY_FAT+ecx+ecx] |
2055 | push dword [ecx] |
2049 | push dword [ecx] |
2056 | and word [ecx], 0 |
2050 | and word [ecx], 0 |
2057 | pop ecx |
2051 | pop ecx |
2058 | and ecx, 0xFFF |
2052 | and ecx, 0xFFF |
2059 | jmp .delete |
2053 | jmp .delete |
2060 | .deleted: |
2054 | .deleted: |
2061 | mov edi, [edi+28] |
2055 | mov edi, [edi+28] |
2062 | ; save directory & FAT |
2056 | ; save directory & FAT |
2063 | mov eax, [esp+8] |
2057 | mov eax, [esp+8] |
2064 | pusha |
2058 | pusha |
2065 | call save_chs_sector |
2059 | call save_chs_sector |
2066 | popa |
2060 | popa |
2067 | cmp [FDC_Status], 0 |
2061 | cmp [FDC_Status], 0 |
2068 | jnz .device_err2 |
2062 | jnz .device_err2 |
2069 | call save_flp_fat |
2063 | call save_flp_fat |
2070 | cmp [FDC_Status], 0 |
2064 | cmp [FDC_Status], 0 |
2071 | jnz .device_err2 |
2065 | jnz .device_err2 |
2072 | ; zero last sector, ignore errors |
2066 | ; zero last sector, ignore errors |
2073 | pop eax |
2067 | pop eax |
2074 | add eax, 31 |
2068 | add eax, 31 |
2075 | and edi, 0x1FF |
2069 | and edi, 0x1FF |
2076 | jz .truncate_done |
2070 | jz .truncate_done |
2077 | call SetUserInterrupts |
- | |
- | 2071 | ||
2078 | pusha |
2072 | pusha |
2079 | call read_chs_sector |
2073 | call read_chs_sector |
2080 | popa |
2074 | popa |
2081 | add edi, FDD_BUFF |
2075 | add edi, FDD_BUFF |
2082 | mov ecx, FDD_BUFF+0x200 |
2076 | mov ecx, FDD_BUFF+0x200 |
2083 | sub ecx, edi |
2077 | sub ecx, edi |
2084 | push eax |
2078 | push eax |
2085 | xor eax, eax |
2079 | xor eax, eax |
2086 | rep stosb |
2080 | rep stosb |
2087 | pop eax |
2081 | pop eax |
2088 | pusha |
2082 | pusha |
2089 | call save_chs_sector |
2083 | call save_chs_sector |
2090 | popa |
2084 | popa |
2091 | .truncate_done: |
2085 | .truncate_done: |
2092 | pop ecx eax edi |
2086 | pop ecx eax edi |
2093 | xor eax, eax |
2087 | xor eax, eax |
2094 | jmp .doret |
2088 | jmp .doret |
2095 | 2089 | ||
2096 | fs_FloppyGetFileInfo: |
2090 | fs_FloppyGetFileInfo: |
2097 | call read_flp_fat |
2091 | call read_flp_fat |
2098 | cmp [FDC_Status], 0 |
2092 | cmp [FDC_Status], 0 |
2099 | jnz ret11 |
2093 | jnz ret11 |
2100 | cmp byte [esi], 0 |
2094 | cmp byte [esi], 0 |
2101 | jnz @f |
2095 | jnz @f |
2102 | mov eax, 2 ; unsupported |
2096 | mov eax, 2 ; unsupported |
2103 | ret |
2097 | ret |
2104 | @@: |
2098 | @@: |
2105 | push edi |
2099 | push edi |
2106 | call fd_find_lfn |
2100 | call fd_find_lfn |
2107 | jmp fs_GetFileInfo_finish |
2101 | jmp fs_GetFileInfo_finish |
2108 | 2102 | ||
2109 | ret11: |
2103 | ret11: |
2110 | mov eax, 11 |
2104 | mov eax, 11 |
2111 | ret |
2105 | ret |
2112 | 2106 | ||
2113 | fs_FloppySetFileInfo: |
2107 | fs_FloppySetFileInfo: |
2114 | call read_flp_fat |
2108 | call read_flp_fat |
2115 | cmp [FDC_Status], 0 |
2109 | cmp [FDC_Status], 0 |
2116 | jnz ret11 |
2110 | jnz ret11 |
2117 | cmp byte [esi], 0 |
2111 | cmp byte [esi], 0 |
2118 | jnz @f |
2112 | jnz @f |
2119 | mov eax, 2 ; unsupported |
2113 | mov eax, 2 ; unsupported |
2120 | ret |
2114 | ret |
2121 | @@: |
2115 | @@: |
2122 | push edi |
2116 | push edi |
2123 | call fd_find_lfn |
2117 | call fd_find_lfn |
2124 | jnc @f |
2118 | jnc @f |
2125 | pop edi |
2119 | pop edi |
2126 | mov eax, ERROR_FILE_NOT_FOUND |
2120 | mov eax, ERROR_FILE_NOT_FOUND |
2127 | ret |
2121 | ret |
2128 | @@: |
2122 | @@: |
2129 | push eax |
2123 | push eax |
2130 | call bdfe_to_fat_entry |
2124 | call bdfe_to_fat_entry |
2131 | pop eax |
2125 | pop eax |
2132 | pusha |
2126 | pusha |
2133 | call save_chs_sector |
2127 | call save_chs_sector |
2134 | popa |
2128 | popa |
2135 | pop edi |
2129 | pop edi |
2136 | xor eax, eax |
2130 | xor eax, eax |
2137 | cmp [FDC_Status], al |
2131 | cmp [FDC_Status], al |
2138 | jz @f |
2132 | jz @f |
2139 | mov al, 11 |
2133 | mov al, 11 |
2140 | @@: |
2134 | @@: |
2141 | ret |
2135 | ret |
2142 | 2136 | ||
2143 | ;---------------------------------------------------------------- |
2137 | ;---------------------------------------------------------------- |
2144 | ; |
2138 | ; |
2145 | ; fs_FloppyDelete - delete file or empty folder from floppy |
2139 | ; fs_FloppyDelete - delete file or empty folder from floppy |
2146 | ; |
2140 | ; |
2147 | ; esi points to filename |
2141 | ; esi points to filename |
2148 | ; |
2142 | ; |
2149 | ; ret eax = 0 ok or other = errormsg |
2143 | ; ret eax = 0 ok or other = errormsg |
2150 | ; |
2144 | ; |
2151 | ;-------------------------------------------------------------- |
2145 | ;-------------------------------------------------------------- |
2152 | fs_FloppyDelete: |
2146 | fs_FloppyDelete: |
2153 | call read_flp_fat |
2147 | call read_flp_fat |
2154 | cmp [FDC_Status], 0 |
2148 | cmp [FDC_Status], 0 |
2155 | jz @f |
2149 | jz @f |
2156 | push 11 |
2150 | push 11 |
2157 | jmp .pop_ret |
2151 | jmp .pop_ret |
2158 | @@: |
2152 | @@: |
2159 | cmp byte [esi], 0 |
2153 | cmp byte [esi], 0 |
2160 | jnz @f |
2154 | jnz @f |
2161 | ; cannot delete root! |
2155 | ; cannot delete root! |
2162 | .access_denied: |
2156 | .access_denied: |
2163 | push ERROR_ACCESS_DENIED |
2157 | push ERROR_ACCESS_DENIED |
2164 | .pop_ret: |
2158 | .pop_ret: |
2165 | pop eax |
2159 | pop eax |
2166 | ret |
2160 | ret |
2167 | @@: |
2161 | @@: |
2168 | and [fd_prev_sector], 0 |
2162 | and [fd_prev_sector], 0 |
2169 | and [fd_prev_prev_sector], 0 |
2163 | and [fd_prev_prev_sector], 0 |
2170 | push edi |
2164 | push edi |
2171 | call fd_find_lfn |
2165 | call fd_find_lfn |
2172 | jnc .found |
2166 | jnc .found |
2173 | pop edi |
2167 | pop edi |
2174 | push ERROR_FILE_NOT_FOUND |
2168 | push ERROR_FILE_NOT_FOUND |
2175 | jmp .pop_ret |
2169 | jmp .pop_ret |
2176 | .found: |
2170 | .found: |
2177 | cmp dword [edi], '. ' |
2171 | cmp dword [edi], '. ' |
2178 | jz .access_denied2 |
2172 | jz .access_denied2 |
2179 | cmp dword [edi], '.. ' |
2173 | cmp dword [edi], '.. ' |
2180 | jz .access_denied2 |
2174 | jz .access_denied2 |
2181 | test byte [edi+11], 10h |
2175 | test byte [edi+11], 10h |
2182 | jz .dodel |
2176 | jz .dodel |
2183 | ; we can delete only empty folders! |
2177 | ; we can delete only empty folders! |
2184 | push eax |
2178 | push eax |
2185 | movzx eax, word [edi+26] |
2179 | movzx eax, word [edi+26] |
2186 | push ebx |
2180 | push ebx |
2187 | pusha |
2181 | pusha |
2188 | add eax, 31 |
2182 | add eax, 31 |
2189 | call read_chs_sector |
2183 | call read_chs_sector |
2190 | popa |
2184 | popa |
2191 | mov ebx, FDD_BUFF + 2*0x20 |
2185 | mov ebx, FDD_BUFF + 2*0x20 |
2192 | .checkempty: |
2186 | .checkempty: |
2193 | cmp byte [ebx], 0 |
2187 | cmp byte [ebx], 0 |
2194 | jz .empty |
2188 | jz .empty |
2195 | cmp byte [ebx], 0xE5 |
2189 | cmp byte [ebx], 0xE5 |
2196 | jnz .notempty |
2190 | jnz .notempty |
2197 | add ebx, 0x20 |
2191 | add ebx, 0x20 |
2198 | cmp ebx, FDD_BUFF + 0x200 |
2192 | cmp ebx, FDD_BUFF + 0x200 |
2199 | jb .checkempty |
2193 | jb .checkempty |
2200 | movzx eax, word [FLOPPY_FAT + eax*2] |
2194 | movzx eax, word [FLOPPY_FAT + eax*2] |
2201 | pusha |
2195 | pusha |
2202 | add eax, 31 |
2196 | add eax, 31 |
2203 | call read_chs_sector |
2197 | call read_chs_sector |
2204 | popa |
2198 | popa |
2205 | mov ebx, FDD_BUFF |
2199 | mov ebx, FDD_BUFF |
2206 | jmp .checkempty |
2200 | jmp .checkempty |
2207 | .notempty: |
2201 | .notempty: |
2208 | pop ebx |
2202 | pop ebx |
2209 | pop eax |
2203 | pop eax |
2210 | .access_denied2: |
2204 | .access_denied2: |
2211 | pop edi |
2205 | pop edi |
2212 | jmp .access_denied |
2206 | jmp .access_denied |
2213 | .empty: |
2207 | .empty: |
2214 | pop ebx |
2208 | pop ebx |
2215 | pop eax |
2209 | pop eax |
2216 | pusha |
2210 | pusha |
2217 | call read_chs_sector |
2211 | call read_chs_sector |
2218 | popa |
2212 | popa |
2219 | .dodel: |
2213 | .dodel: |
2220 | push eax |
2214 | push eax |
2221 | movzx eax, word [edi+26] |
2215 | movzx eax, word [edi+26] |
2222 | xchg eax, [esp] |
2216 | xchg eax, [esp] |
2223 | ; delete folder entry |
2217 | ; delete folder entry |
2224 | mov byte [edi], 0xE5 |
2218 | mov byte [edi], 0xE5 |
2225 | ; delete LFN (if present) |
2219 | ; delete LFN (if present) |
2226 | .lfndel: |
2220 | .lfndel: |
2227 | cmp edi, FDD_BUFF |
2221 | cmp edi, FDD_BUFF |
2228 | ja @f |
2222 | ja @f |
2229 | cmp [fd_prev_sector], 0 |
2223 | cmp [fd_prev_sector], 0 |
2230 | jz .lfndone |
2224 | jz .lfndone |
2231 | push [fd_prev_sector] |
2225 | push [fd_prev_sector] |
2232 | push [fd_prev_prev_sector] |
2226 | push [fd_prev_prev_sector] |
2233 | pop [fd_prev_sector] |
2227 | pop [fd_prev_sector] |
2234 | and [fd_prev_prev_sector], 0 |
2228 | and [fd_prev_prev_sector], 0 |
2235 | pusha |
2229 | pusha |
2236 | call save_chs_sector |
2230 | call save_chs_sector |
2237 | popa |
2231 | popa |
2238 | pop eax |
2232 | pop eax |
2239 | pusha |
2233 | pusha |
2240 | call read_chs_sector |
2234 | call read_chs_sector |
2241 | popa |
2235 | popa |
2242 | mov edi, FDD_BUFF+0x200 |
2236 | mov edi, FDD_BUFF+0x200 |
2243 | @@: |
2237 | @@: |
2244 | sub edi, 0x20 |
2238 | sub edi, 0x20 |
2245 | cmp byte [edi], 0xE5 |
2239 | cmp byte [edi], 0xE5 |
2246 | jz .lfndone |
2240 | jz .lfndone |
2247 | cmp byte [edi+11], 0xF |
2241 | cmp byte [edi+11], 0xF |
2248 | jnz .lfndone |
2242 | jnz .lfndone |
2249 | mov byte [edi], 0xE5 |
2243 | mov byte [edi], 0xE5 |
2250 | jmp .lfndel |
2244 | jmp .lfndel |
2251 | .lfndone: |
2245 | .lfndone: |
2252 | pusha |
2246 | pusha |
2253 | call save_chs_sector |
2247 | call save_chs_sector |
2254 | popa |
2248 | popa |
2255 | ; delete FAT chain |
2249 | ; delete FAT chain |
2256 | pop eax |
2250 | pop eax |
2257 | @@: |
2251 | @@: |
2258 | cmp eax, 2 |
2252 | cmp eax, 2 |
2259 | jb .done |
2253 | jb .done |
2260 | cmp eax, 0xFF8 |
2254 | cmp eax, 0xFF8 |
2261 | jae .done |
2255 | jae .done |
2262 | lea eax, [FLOPPY_FAT + eax*2] |
2256 | lea eax, [FLOPPY_FAT + eax*2] |
2263 | push dword [eax] |
2257 | push dword [eax] |
2264 | and word [eax], 0 |
2258 | and word [eax], 0 |
2265 | pop eax |
2259 | pop eax |
2266 | and eax, 0xFFF |
2260 | and eax, 0xFFF |
2267 | jmp @b |
2261 | jmp @b |
2268 | .done: |
2262 | .done: |
2269 | call save_flp_fat |
2263 | call save_flp_fat |
2270 | pop edi |
2264 | pop edi |
2271 | xor eax, eax |
2265 | xor eax, eax |
2272 | ret |
2266 | ret |
2273 | 2267 | ||
2274 | ; \end{diamond}=>=>->->-> |
2268 | ; \end{diamond}=>=>->->-> |