Rev 420 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
357 | serge | 1 | GREEDY_KERNEL equ 0 |
164 | serge | 2 | |
170 | serge | 3 | |
164 | serge | 4 | struc APP_HEADER_00 |
5 | { .banner dq ? |
||
6 | .version dd ? ;+8 |
||
7 | .start dd ? ;+12 |
||
8 | .i_end dd ? ;+16 |
||
9 | .mem_size dd ? ;+20 |
||
10 | .i_param dd ? ;+24 |
||
11 | } |
||
12 | |||
13 | struc APP_HEADER_01 |
||
14 | { .banner dq ? |
||
15 | .version dd ? ;+8 |
||
16 | .start dd ? ;+12 |
||
17 | .i_end dd ? ;+16 |
||
18 | .mem_size dd ? ;+20 |
||
19 | .stack_top dd ? ;+24 |
||
20 | .i_param dd ? ;+28 |
||
21 | .i_icon dd ? ;+32 |
||
22 | } |
||
23 | |||
237 | serge | 24 | |
25 | struc APP_PARAMS |
||
26 | { .app_cmdline ;0x00 |
||
27 | .app_path ;0x04 |
||
28 | .app_eip ;0x08 |
||
29 | .app_esp ;0x0C |
||
30 | .app_mem ;0x10 |
||
31 | } |
||
32 | |||
33 | macro _clear_ op |
||
34 | { mov ecx, op/4 |
||
35 | xor eax, eax |
||
36 | cld |
||
37 | rep stosd |
||
38 | } |
||
39 | |||
363 | serge | 40 | |
164 | serge | 41 | align 4 |
363 | serge | 42 | proc fs_execute |
43 | |||
44 | ;fn_read:dword, file_size:dword, cluster:dword |
||
45 | |||
46 | ; ebx - cmdline |
||
47 | ; edx - flags |
||
48 | ; ebp - full filename |
||
49 | ; [esp+4] = procedure DoRead, [esp+8] = filesize & [esp+12]... - arguments for it |
||
50 | |||
237 | serge | 51 | locals |
363 | serge | 52 | cmdline rd 64 ;256/4 |
53 | filename rd 256 ;1024/4 |
||
54 | flags dd ? |
||
55 | |||
237 | serge | 56 | save_cr3 dd ? |
57 | slot dd ? |
||
58 | slot_base dd ? |
||
59 | file_base dd ? |
||
60 | file_size dd ? |
||
363 | serge | 61 | ;app header data |
62 | hdr_cmdline dd ? ;0x00 |
||
63 | hdr_path dd ? ;0x04 |
||
64 | hdr_eip dd ? ;0x08 |
||
65 | hdr_esp dd ? ;0x0C |
||
66 | hdr_mem dd ? ;0x10 |
||
67 | hdr_i_end dd ? ;0x14 |
||
237 | serge | 68 | endl |
164 | serge | 69 | |
363 | serge | 70 | pushad |
71 | |||
72 | mov [cmdline], ebx |
||
73 | mov [flags], edx |
||
74 | |||
75 | ; [ebp] pointer to filename |
||
76 | |||
77 | lea eax, [filename] |
||
78 | mov dword [eax+1020],0 ;force terminate |
||
79 | ;string |
||
80 | stdcall k_strncpy, eax, [ebp], 1023 |
||
81 | |||
82 | lea eax, [cmdline] |
||
83 | mov dword [eax+252], 0 |
||
84 | stdcall k_strncpy, eax, [cmdline], 255 |
||
85 | |||
86 | lea eax, [filename] |
||
87 | stdcall load_file, eax |
||
237 | serge | 88 | mov ecx, -ERROR_FILE_NOT_FOUND |
89 | test eax, eax |
||
247 | serge | 90 | jz .err_file |
237 | serge | 91 | |
92 | mov [file_base], eax |
||
93 | mov [file_size], ebx |
||
94 | |||
363 | serge | 95 | lea ebx, [hdr_cmdline] |
237 | serge | 96 | call test_app_header |
97 | mov ecx, -0x1F |
||
98 | test eax, eax |
||
247 | serge | 99 | jz .err_hdr |
237 | serge | 100 | |
101 | mov esi, new_process_loading |
||
102 | call sys_msg_board_str ; write message to message board |
||
103 | |||
104 | .wait_lock: |
||
105 | cmp [application_table_status],0 |
||
106 | je .get_lock |
||
107 | call change_task |
||
108 | jmp .wait_lock |
||
109 | |||
110 | .get_lock: |
||
111 | mov eax, 1 |
||
112 | xchg eax, [application_table_status] |
||
113 | cmp eax, 0 |
||
114 | jne .wait_lock |
||
115 | |||
116 | call set_application_table_status |
||
117 | |||
118 | call get_new_process_place |
||
119 | test eax, eax |
||
120 | mov ecx, -0x20 ; too many processes |
||
269 | serge | 121 | jz .err |
237 | serge | 122 | |
123 | mov [slot], eax |
||
124 | shl eax, 8 |
||
380 | serge | 125 | add eax, SLOT_BASE |
237 | serge | 126 | mov [slot_base], eax |
127 | mov edi, eax |
||
128 | _clear_ 256 ;clean extended information about process |
||
129 | |||
130 | ; write application name |
||
363 | serge | 131 | lea edi, [filename] |
237 | serge | 132 | mov al, '/' |
133 | call k_strrchr ; now eax points to name without path |
||
134 | |||
135 | lea esi, [eax+1] |
||
136 | test eax, eax |
||
137 | jnz @F |
||
363 | serge | 138 | lea esi, [filename] |
237 | serge | 139 | @@: |
140 | mov ecx, 8 ; 8 chars for name |
||
141 | mov edi, [slot_base] |
||
142 | .copy_process_name_loop: |
||
143 | lodsb |
||
144 | cmp al, '.' |
||
145 | jz .copy_process_name_done |
||
146 | test al, al |
||
147 | jz .copy_process_name_done |
||
148 | stosb |
||
149 | loop .copy_process_name_loop |
||
150 | .copy_process_name_done: |
||
151 | |||
152 | mov ebx, cr3 |
||
153 | mov [save_cr3], ebx |
||
269 | serge | 154 | |
363 | serge | 155 | stdcall create_app_space,[hdr_mem],[file_base],[file_size] |
364 | diamond | 156 | mov ecx, -30 ; no memory |
237 | serge | 157 | test eax, eax |
158 | jz .failed |
||
159 | |||
160 | mov ebx,[slot_base] |
||
161 | mov [ebx+APPDATA.dir_table],eax |
||
363 | serge | 162 | mov eax,[hdr_mem] |
237 | serge | 163 | mov [ebx+APPDATA.mem_size],eax |
164 | |||
357 | serge | 165 | if GREEDY_KERNEL |
166 | else |
||
363 | serge | 167 | mov ecx, [hdr_mem] |
269 | serge | 168 | mov edi, [file_size] |
169 | add edi, 4095 |
||
170 | and edi, not 4095 |
||
171 | sub ecx, edi |
||
172 | jna @F |
||
173 | |||
174 | xor eax, eax |
||
419 | serge | 175 | ; add edi, new_app_base |
237 | serge | 176 | cld |
269 | serge | 177 | rep stosb |
247 | serge | 178 | @@: |
269 | serge | 179 | end if |
180 | |||
181 | ; release only virtual space, not phisical memory |
||
182 | |||
183 | stdcall free_kernel_space, [file_base] |
||
363 | serge | 184 | lea eax, [hdr_cmdline] |
185 | lea ebx, [cmdline] |
||
186 | lea ecx, [filename] |
||
187 | stdcall set_app_params ,[slot],eax,ebx,ecx,[flags] |
||
237 | serge | 188 | |
189 | mov eax, [save_cr3] |
||
190 | call set_cr3 |
||
191 | |||
247 | serge | 192 | xor ebx, ebx |
193 | mov [application_table_status],ebx ;unlock application_table_status mutex |
||
194 | mov eax,[process_number] ;set result |
||
164 | serge | 195 | ret |
237 | serge | 196 | .failed: |
197 | mov eax, [save_cr3] |
||
198 | call set_cr3 |
||
269 | serge | 199 | .err: |
247 | serge | 200 | .err_hdr: |
201 | stdcall kernel_free,[file_base] |
||
202 | .err_file: |
||
237 | serge | 203 | xor eax, eax |
204 | mov [application_table_status],eax |
||
321 | diamond | 205 | mov eax, ecx |
237 | serge | 206 | ret |
207 | endp |
||
164 | serge | 208 | |
237 | serge | 209 | align 4 |
210 | test_app_header: |
||
211 | virtual at eax |
||
212 | APP_HEADER_00 APP_HEADER_00 |
||
213 | end virtual |
||
214 | virtual at eax |
||
164 | serge | 215 | APP_HEADER_01 APP_HEADER_01 |
216 | end virtual |
||
217 | |||
237 | serge | 218 | cmp dword [eax], 'MENU' |
219 | jne .fail |
||
220 | cmp word [eax+4],'ET' |
||
221 | jne .fail |
||
164 | serge | 222 | |
237 | serge | 223 | cmp [eax+6], word '00' |
224 | jne .check_01_header |
||
164 | serge | 225 | |
237 | serge | 226 | mov ecx,[APP_HEADER_00.start] |
227 | mov [ebx+0x08], ecx ;app_eip |
||
228 | mov edx,[APP_HEADER_00.mem_size] |
||
229 | mov [ebx+0x10], edx ;app_mem |
||
230 | shr edx,1 |
||
231 | sub edx,0x10 |
||
232 | mov [ebx+0x0C], edx ;app_esp |
||
233 | mov ecx,[APP_HEADER_00.i_param] |
||
234 | mov [ebx], ecx ;app_cmdline |
||
235 | mov [ebx+4], dword 0 ;app_path |
||
269 | serge | 236 | mov edx, [APP_HEADER_00.i_end] |
237 | mov [ebx+0x14], edx |
||
164 | serge | 238 | ret |
239 | |||
237 | serge | 240 | .check_01_header: |
164 | serge | 241 | |
237 | serge | 242 | cmp [eax+6],word '01' |
243 | jne .fail |
||
244 | |||
245 | mov ecx,[APP_HEADER_01.start] |
||
246 | mov [ebx+0x08], ecx ;app_eip |
||
247 | mov edx,[APP_HEADER_01.mem_size] |
||
381 | serge | 248 | |
249 | ; \begin{diamond}[20.08.2006] |
||
250 | ; sanity check (functions 19,58 load app_i_end bytes and that must |
||
251 | ; fit in allocated memory to prevent kernel faults) |
||
252 | cmp edx,[APP_HEADER_01.i_end] |
||
253 | jb .fail |
||
254 | ; \end{diamond}[20.08.2006] |
||
255 | |||
237 | serge | 256 | mov [ebx+0x10], edx ;app_mem |
257 | mov ecx,[APP_HEADER_01.stack_top] |
||
258 | mov [ebx+0x0C], ecx ;app_esp |
||
259 | mov edx,[APP_HEADER_01.i_param] |
||
260 | mov [ebx], edx ;app_cmdline |
||
261 | mov ecx,[APP_HEADER_01.i_icon] |
||
262 | mov [ebx+4], ecx ;app_path |
||
269 | serge | 263 | mov edx, [APP_HEADER_01.i_end] |
264 | mov [ebx+0x14], edx |
||
237 | serge | 265 | ret |
266 | .fail: |
||
164 | serge | 267 | xor eax, eax |
268 | ret |
||
269 | |||
270 | align 4 |
||
271 | proc get_new_process_place |
||
272 | ;input: |
||
273 | ; none |
||
274 | ;result: |
||
275 | ; eax=[new_process_place]<>0 - ok |
||
276 | ; 0 - failed. |
||
277 | ;This function find least empty slot. |
||
278 | ;It doesn't increase [TASK_COUNT]! |
||
279 | mov eax,CURRENT_TASK |
||
280 | mov ebx,[TASK_COUNT] |
||
281 | inc ebx |
||
282 | shl ebx,5 |
||
283 | add ebx,eax ;ebx - address of process information for (last+1) slot |
||
284 | .newprocessplace: |
||
285 | ;eax = address of process information for current slot |
||
286 | cmp eax,ebx |
||
287 | jz .endnewprocessplace ;empty slot after high boundary |
||
288 | add eax,0x20 |
||
289 | cmp word [eax+0xa],9 ;check process state, 9 means that process slot is empty |
||
290 | jnz .newprocessplace |
||
291 | .endnewprocessplace: |
||
292 | mov ebx,eax |
||
293 | sub eax,CURRENT_TASK |
||
294 | shr eax,5 ;calculate slot index |
||
295 | cmp eax,256 |
||
296 | jge .failed ;it should be <256 |
||
297 | mov word [ebx+0xa],9 ;set process state to 9 (for slot after hight boundary) |
||
298 | ret |
||
299 | .failed: |
||
300 | xor eax,eax |
||
301 | ret |
||
302 | endp |
||
303 | |||
304 | align 4 |
||
269 | serge | 305 | proc create_app_space stdcall, app_size:dword,img_base:dword,img_size:dword |
164 | serge | 306 | locals |
307 | app_pages dd ? |
||
308 | img_pages dd ? |
||
309 | dir_addr dd ? |
||
310 | app_tabs dd ? |
||
311 | endl |
||
312 | |||
276 | serge | 313 | mov ebx, pg_data.pg_mutex |
314 | call wait_mutex ;ebx |
||
164 | serge | 315 | |
316 | xor eax, eax |
||
317 | mov [dir_addr], eax |
||
318 | |||
319 | mov eax, [app_size] |
||
172 | serge | 320 | add eax, 4095 |
164 | serge | 321 | and eax, NOT(4095) |
322 | mov [app_size], eax |
||
323 | mov ebx, eax |
||
324 | shr eax, 12 |
||
325 | mov [app_pages], eax |
||
170 | serge | 326 | |
164 | serge | 327 | add ebx, 0x3FFFFF |
328 | and ebx, NOT(0x3FFFFF) |
||
329 | shr ebx, 22 |
||
330 | mov [app_tabs], ebx |
||
331 | |||
170 | serge | 332 | mov ecx, [img_size] |
333 | add ecx, 4095 |
||
334 | and ecx, NOT(4095) |
||
164 | serge | 335 | |
170 | serge | 336 | mov [img_size], ecx |
337 | shr ecx, 12 |
||
338 | mov [img_pages], ecx |
||
164 | serge | 339 | |
170 | serge | 340 | if GREEDY_KERNEL |
341 | lea eax, [ecx+ebx+2] ;only image size |
||
342 | else |
||
343 | lea eax, [eax+ebx+2] ;all requested memory |
||
344 | end if |
||
345 | cmp eax, [pg_data.pages_free] |
||
346 | ja .fail |
||
347 | |||
164 | serge | 348 | call alloc_page |
349 | test eax, eax |
||
350 | jz .fail |
||
351 | mov [dir_addr], eax |
||
352 | stdcall map_page,[tmp_task_pdir],eax,dword PG_SW |
||
353 | |||
354 | mov edi, [tmp_task_pdir] |
||
418 | serge | 355 | mov ecx, (OS_BASE shr 20)/4 |
394 | serge | 356 | xor eax, eax |
418 | serge | 357 | cld |
394 | serge | 358 | rep stosd |
359 | |||
418 | serge | 360 | mov ecx, (OS_BASE shr 20)/4 |
400 | serge | 361 | mov esi, sys_pgdir+(OS_BASE shr 20) |
164 | serge | 362 | rep movsd |
363 | |||
378 | serge | 364 | mov eax, [dir_addr] |
418 | serge | 365 | or eax, PG_SW |
366 | mov [edi-4096+(page_tabs shr 20)], eax |
||
367 | |||
368 | and eax, -4096 |
||
164 | serge | 369 | call set_cr3 |
370 | |||
371 | mov edx, [app_tabs] |
||
372 | mov edi, new_app_base |
||
373 | @@: |
||
374 | call alloc_page |
||
375 | test eax, eax |
||
376 | jz .fail |
||
377 | |||
188 | serge | 378 | stdcall map_page_table, edi, eax |
164 | serge | 379 | add edi, 0x00400000 |
380 | dec edx |
||
381 | jnz @B |
||
382 | |||
383 | mov edi, new_app_base |
||
384 | shr edi, 10 |
||
365 | serge | 385 | add edi, page_tabs |
269 | serge | 386 | |
164 | serge | 387 | mov ecx, [app_tabs] |
388 | shl ecx, 10 |
||
389 | xor eax, eax |
||
390 | rep stosd |
||
391 | |||
269 | serge | 392 | mov ecx, [img_pages] |
393 | mov ebx, PG_UW |
||
164 | serge | 394 | mov edx, new_app_base |
269 | serge | 395 | mov esi, [img_base] |
396 | mov edi, new_app_base |
||
397 | shr esi, 10 |
||
398 | shr edi, 10 |
||
365 | serge | 399 | add esi, page_tabs |
400 | add edi, page_tabs |
||
269 | serge | 401 | .remap: |
402 | lodsd |
||
403 | or eax, ebx ; force user level r/w access |
||
404 | stosd |
||
405 | add edx, 0x1000 |
||
406 | dec [app_pages] |
||
407 | dec ecx |
||
408 | jnz .remap |
||
409 | |||
410 | mov ecx, [app_pages] |
||
411 | test ecx, ecx |
||
412 | jz .done |
||
413 | |||
414 | if GREEDY_KERNEL |
||
415 | mov eax, 0x02 |
||
416 | .reserve: |
||
417 | stosd |
||
418 | invlpg [edx] |
||
419 | add edx, 4096 |
||
420 | dec ecx |
||
421 | jnz .reserve |
||
422 | else |
||
423 | |||
164 | serge | 424 | .alloc: |
425 | call alloc_page |
||
426 | test eax, eax |
||
427 | jz .fail |
||
428 | |||
429 | stdcall map_page,edx,eax,dword PG_UW |
||
430 | add edx, 0x1000 |
||
269 | serge | 431 | dec [app_pages] |
164 | serge | 432 | jnz .alloc |
269 | serge | 433 | end if |
164 | serge | 434 | |
269 | serge | 435 | .done: |
164 | serge | 436 | stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP |
437 | |||
438 | dec [pg_data.pg_mutex] |
||
439 | mov eax, [dir_addr] |
||
440 | ret |
||
441 | .fail: |
||
442 | dec [pg_data.pg_mutex] |
||
443 | cmp [dir_addr], 0 |
||
357 | serge | 444 | je @f |
164 | serge | 445 | stdcall destroy_app_space, [dir_addr] |
446 | @@: |
||
447 | xor eax, eax |
||
448 | ret |
||
449 | endp |
||
450 | |||
451 | align 4 |
||
452 | set_cr3: |
||
427 | serge | 453 | |
454 | mov ebx, [current_slot] |
||
455 | mov [ebx+APPDATA.dir_table], eax |
||
164 | serge | 456 | mov cr3, eax |
427 | serge | 457 | |
458 | ; mov esi, [CURRENT_TASK] |
||
459 | ; mov ebx, esi |
||
460 | ; shl esi,8 |
||
461 | ; mov [SLOT_BASE+esi+0xB8],eax |
||
462 | ; imul ebx,tss_step |
||
463 | ; add ebx,tss_data |
||
464 | ; mov [ebx+28], eax |
||
465 | ; mov cr3, eax |
||
164 | serge | 466 | ret |
467 | |||
468 | align 4 |
||
469 | proc destroy_page_table stdcall, pg_tab:dword |
||
470 | |||
471 | push esi |
||
472 | |||
473 | mov esi, [pg_tab] |
||
474 | mov ecx, 1024 |
||
475 | .free: |
||
476 | mov eax, [esi] |
||
477 | test eax, 1 |
||
478 | jz .next |
||
479 | call free_page |
||
480 | .next: |
||
481 | add esi, 4 |
||
482 | dec ecx |
||
483 | jnz .free |
||
484 | pop esi |
||
485 | ret |
||
486 | endp |
||
487 | |||
488 | align 4 |
||
489 | proc destroy_app_space stdcall, pg_dir:dword |
||
490 | |||
276 | serge | 491 | mov ebx, pg_data.pg_mutex |
492 | call wait_mutex ;ebx |
||
164 | serge | 493 | |
494 | xor edx,edx |
||
495 | mov eax,0x2 |
||
496 | mov ebx, [pg_dir] |
||
497 | .loop: |
||
498 | ;eax = current slot of process |
||
499 | mov ecx,eax |
||
500 | shl ecx,5 |
||
501 | cmp byte [CURRENT_TASK+ecx+0xa],9 ;if process running? |
||
502 | jz @f ;skip empty slots |
||
503 | shl ecx,3 |
||
380 | serge | 504 | cmp [SLOT_BASE+ecx+0xB8],ebx ;compare page directory addresses |
164 | serge | 505 | jnz @f |
506 | inc edx ;thread found |
||
507 | @@: |
||
508 | inc eax |
||
509 | cmp eax,[TASK_COUNT] ;exit loop if we look through all processes |
||
510 | jle .loop |
||
511 | |||
512 | ;edx = number of threads |
||
513 | ;our process is zombi so it isn't counted |
||
514 | cmp edx,1 |
||
515 | jg .exit |
||
516 | ;if there isn't threads then clear memory. |
||
517 | |||
518 | mov eax, [pg_dir] |
||
519 | and eax, not 0xFFF |
||
520 | stdcall map_page,[tmp_task_pdir],eax,dword PG_SW |
||
521 | mov esi, [tmp_task_pdir] |
||
418 | serge | 522 | mov edi, (OS_BASE shr 20)/4 |
164 | serge | 523 | .destroy: |
524 | mov eax, [esi] |
||
525 | test eax, 1 |
||
526 | jz .next |
||
527 | and eax, not 0xFFF |
||
528 | stdcall map_page,[tmp_task_ptab],eax,dword PG_SW |
||
529 | stdcall destroy_page_table, [tmp_task_ptab] |
||
530 | mov eax, [esi] |
||
531 | call free_page |
||
532 | .next: |
||
533 | add esi, 4 |
||
534 | dec edi |
||
535 | jnz .destroy |
||
536 | |||
537 | mov eax, [pg_dir] |
||
538 | call free_page |
||
539 | .exit: |
||
540 | stdcall map_page,[tmp_task_ptab],dword 0,dword PG_UNMAP |
||
541 | stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP |
||
542 | dec [pg_data.pg_mutex] |
||
543 | ret |
||
544 | endp |
||
545 | |||
546 | pid_to_slot: |
||
547 | ;Input: |
||
548 | ; eax - pid of process |
||
549 | ;Output: |
||
550 | ; eax - slot of process or 0 if process don't exists |
||
551 | ;Search process by PID. |
||
552 | push ebx |
||
553 | push ecx |
||
554 | mov ebx,[TASK_COUNT] |
||
555 | shl ebx,5 |
||
556 | mov ecx,2*32 |
||
557 | |||
558 | .loop: |
||
559 | ;ecx=offset of current process info entry |
||
560 | ;ebx=maximum permitted offset |
||
561 | cmp byte [CURRENT_TASK+ecx+0xa],9 |
||
562 | jz .endloop ;skip empty slots |
||
563 | cmp [CURRENT_TASK+ecx+0x4],eax ;check PID |
||
564 | jz .pid_found |
||
565 | .endloop: |
||
566 | add ecx,32 |
||
567 | cmp ecx,ebx |
||
568 | jle .loop |
||
569 | |||
570 | pop ecx |
||
571 | pop ebx |
||
572 | xor eax,eax |
||
573 | ret |
||
574 | |||
575 | .pid_found: |
||
576 | shr ecx,5 |
||
577 | mov eax,ecx ;convert offset to index of slot |
||
578 | pop ecx |
||
579 | pop ebx |
||
580 | ret |
||
581 | |||
582 | check_region: |
||
583 | ;input: |
||
584 | ; ebx - start of buffer |
||
585 | ; ecx - size of buffer |
||
586 | ;result: |
||
587 | ; eax = 1 region lays in app memory |
||
588 | ; eax = 0 region don't lays in app memory |
||
589 | mov eax,[CURRENT_TASK] |
||
590 | jmp check_process_region |
||
591 | ;----------------------------------------------------------------------------- |
||
592 | check_process_region: |
||
593 | ;input: |
||
594 | ; eax - slot |
||
595 | ; ebx - start of buffer |
||
596 | ; ecx - size of buffer |
||
597 | ;result: |
||
598 | ; eax = 1 region lays in app memory |
||
599 | ; eax = 0 region don't lays in app memory |
||
600 | |||
601 | test ecx,ecx |
||
602 | jle .ok |
||
603 | shl eax,5 |
||
604 | cmp word [CURRENT_TASK+eax+0xa],0 |
||
605 | jnz .failed |
||
606 | shl eax,3 |
||
380 | serge | 607 | mov eax,[SLOT_BASE+eax+0xb8] |
164 | serge | 608 | test eax,eax |
609 | jz .failed |
||
610 | |||
611 | mov eax,1 |
||
612 | ret |
||
613 | |||
614 | |||
615 | ; call MEM_Get_Linear_Address |
||
616 | ; push ebx |
||
617 | ; push ecx |
||
618 | ; push edx |
||
619 | ; mov edx,ebx |
||
620 | ; and edx,not (4096-1) |
||
621 | ; sub ebx,edx |
||
622 | ; add ecx,ebx |
||
623 | ; mov ebx,edx |
||
624 | ; add ecx,(4096-1) |
||
625 | ; and ecx,not (4096-1) |
||
626 | ;.loop: |
||
627 | ;;eax - linear address of page directory |
||
628 | ;;ebx - current page |
||
629 | ;;ecx - current size |
||
630 | ; mov edx,ebx |
||
631 | ; shr edx,22 |
||
632 | ; mov edx,[eax+4*edx] |
||
633 | ; and edx,not (4096-1) |
||
634 | ; test edx,edx |
||
635 | ; jz .failed1 |
||
636 | ; push eax |
||
637 | ; mov eax,edx |
||
638 | ; call MEM_Get_Linear_Address |
||
639 | ; mov edx,ebx |
||
640 | ; shr edx,12 |
||
641 | ; and edx,(1024-1) |
||
642 | ; mov eax,[eax+4*edx] |
||
643 | ; and eax,not (4096-1) |
||
644 | ; test eax,eax |
||
645 | ; pop eax |
||
646 | ; jz .failed1 |
||
647 | ; add ebx,4096 |
||
648 | ; sub ecx,4096 |
||
649 | ; jg .loop |
||
650 | ; pop edx |
||
651 | ; pop ecx |
||
652 | ; pop ebx |
||
653 | .ok: |
||
654 | mov eax,1 |
||
655 | ret |
||
656 | ; |
||
657 | ;.failed1: |
||
658 | ; pop edx |
||
659 | ; pop ecx |
||
660 | ; pop ebx |
||
661 | .failed: |
||
662 | xor eax,eax |
||
663 | ret |
||
664 | |||
665 | align 4 |
||
666 | proc read_process_memory |
||
667 | ;Input: |
||
668 | ; eax - process slot |
||
669 | ; ebx - buffer address |
||
670 | ; ecx - buffer size |
||
671 | ; edx - start address in other process |
||
672 | ;Output: |
||
673 | ; eax - number of bytes read. |
||
674 | locals |
||
675 | slot dd ? |
||
676 | buff dd ? |
||
677 | r_count dd ? |
||
678 | offset dd ? |
||
679 | tmp_r_cnt dd ? |
||
680 | endl |
||
681 | |||
682 | mov [slot], eax |
||
683 | mov [buff], ebx |
||
684 | mov [r_count], ecx |
||
685 | mov [tmp_r_cnt], ecx |
||
686 | mov [offset], edx |
||
687 | |||
688 | pushad |
||
689 | .read_mem: |
||
690 | mov edx, [offset] |
||
691 | mov ebx, [tmp_r_cnt] |
||
692 | |||
693 | mov ecx, 0x400000 |
||
694 | and edx, 0x3FFFFF |
||
695 | sub ecx, edx |
||
696 | cmp ecx, ebx |
||
697 | jbe @f |
||
698 | mov ecx, ebx |
||
699 | @@: |
||
700 | cmp ecx, 0x8000 |
||
701 | jna @F |
||
702 | mov ecx, 0x8000 |
||
703 | @@: |
||
704 | mov eax, [slot] |
||
705 | shl eax,8 |
||
706 | mov ebx, [offset] |
||
419 | serge | 707 | ; add ebx, new_app_base |
164 | serge | 708 | push ecx |
709 | stdcall map_memEx, [proc_mem_map],\ |
||
380 | serge | 710 | [SLOT_BASE+eax+0xB8],\ |
164 | serge | 711 | ebx, ecx |
712 | pop ecx |
||
713 | |||
714 | mov esi, [offset] |
||
715 | and esi, 0xfff |
||
716 | add esi, [proc_mem_map] |
||
717 | mov edi, [buff] |
||
718 | mov edx, ecx |
||
719 | rep movsb |
||
720 | |||
721 | add [offset], edx |
||
722 | sub [tmp_r_cnt], edx |
||
723 | jnz .read_mem |
||
724 | |||
725 | popad |
||
726 | mov eax, [r_count] |
||
727 | ret |
||
728 | endp |
||
729 | |||
730 | align 4 |
||
731 | proc write_process_memory |
||
732 | ;Input: |
||
733 | ; eax - process slot |
||
734 | ; ebx - buffer address |
||
735 | ; ecx - buffer size |
||
736 | ; edx - start address in other process |
||
737 | ;Output: |
||
738 | ; eax - number of bytes written |
||
739 | |||
740 | locals |
||
741 | slot dd ? |
||
742 | buff dd ? |
||
743 | w_count dd ? |
||
744 | offset dd ? |
||
745 | tmp_w_cnt dd ? |
||
746 | endl |
||
747 | |||
748 | mov [slot], eax |
||
749 | mov [buff], ebx |
||
750 | mov [w_count], ecx |
||
751 | mov [tmp_w_cnt], ecx |
||
752 | mov [offset], edx |
||
753 | |||
754 | pushad |
||
755 | .read_mem: |
||
756 | mov edx, [offset] |
||
757 | mov ebx, [tmp_w_cnt] |
||
758 | |||
759 | mov ecx, 0x400000 |
||
760 | and edx, 0x3FFFFF |
||
761 | sub ecx, edx |
||
762 | cmp ecx, ebx |
||
763 | jbe @f |
||
764 | mov ecx, ebx |
||
765 | @@: |
||
766 | cmp ecx, 0x8000 |
||
767 | jna @F |
||
768 | mov ecx, 0x8000 |
||
769 | @@: |
||
770 | mov eax, [slot] |
||
771 | shl eax,8 |
||
772 | mov ebx, [offset] |
||
419 | serge | 773 | ; add ebx, new_app_base |
164 | serge | 774 | push ecx |
775 | stdcall map_memEx, [proc_mem_map],\ |
||
380 | serge | 776 | [SLOT_BASE+eax+0xB8],\ |
164 | serge | 777 | ebx, ecx |
778 | pop ecx |
||
779 | |||
780 | mov edi, [offset] |
||
781 | and edi, 0xfff |
||
782 | add edi, [proc_mem_map] |
||
783 | mov esi, [buff] |
||
784 | mov edx, ecx |
||
785 | rep movsb |
||
786 | |||
787 | add [offset], edx |
||
788 | sub [tmp_w_cnt], edx |
||
789 | jnz .read_mem |
||
790 | |||
791 | popad |
||
792 | mov eax, [w_count] |
||
793 | ret |
||
794 | endp |
||
795 | |||
796 | align 4 |
||
797 | proc new_sys_threads |
||
798 | locals |
||
799 | slot dd ? |
||
237 | serge | 800 | app_cmdline dd ? ;0x00 |
801 | app_path dd ? ;0x04 |
||
802 | app_eip dd ? ;0x08 |
||
803 | app_esp dd ? ;0x0C |
||
804 | app_mem dd ? ;0x10 |
||
164 | serge | 805 | endl |
806 | |||
237 | serge | 807 | cmp eax,1 |
808 | jne .failed ;other subfunctions |
||
164 | serge | 809 | |
237 | serge | 810 | xor eax,eax |
811 | mov [app_cmdline], eax |
||
812 | mov [app_path], eax |
||
813 | mov [app_eip], ebx |
||
814 | mov [app_esp], ecx |
||
164 | serge | 815 | |
816 | mov esi,new_process_loading |
||
817 | call sys_msg_board_str |
||
818 | .wait_lock: |
||
819 | cmp [application_table_status],0 |
||
820 | je .get_lock |
||
821 | call change_task |
||
822 | jmp .wait_lock |
||
823 | |||
824 | .get_lock: |
||
825 | mov eax, 1 |
||
826 | xchg eax, [application_table_status] |
||
827 | cmp eax, 0 |
||
828 | jne .wait_lock |
||
829 | |||
830 | call set_application_table_status |
||
831 | |||
832 | call get_new_process_place |
||
833 | test eax, eax |
||
834 | jz .failed |
||
835 | |||
836 | mov [slot], eax |
||
837 | |||
427 | serge | 838 | mov esi,[current_slot] |
237 | serge | 839 | mov ebx,esi ;ebx=esi - pointer to extended information about current thread |
164 | serge | 840 | |
237 | serge | 841 | mov edi, eax |
164 | serge | 842 | shl edi,8 |
380 | serge | 843 | add edi,SLOT_BASE |
237 | serge | 844 | mov edx,edi ;edx=edi - pointer to extended infomation about new thread |
164 | serge | 845 | mov ecx,256/4 |
237 | serge | 846 | xor eax, eax |
847 | cld |
||
848 | rep stosd ;clean extended information about new thread |
||
849 | mov esi,ebx |
||
164 | serge | 850 | mov edi,edx |
419 | serge | 851 | mov byte [edi], '@' |
852 | inc edi |
||
164 | serge | 853 | mov ecx,11 |
237 | serge | 854 | rep movsb ;copy process name |
164 | serge | 855 | |
237 | serge | 856 | mov eax,[ebx+APPDATA.heap_base] |
857 | mov [edx+APPDATA.heap_base], eax |
||
164 | serge | 858 | |
237 | serge | 859 | mov ecx,[ebx+APPDATA.heap_top] |
860 | mov [edx+APPDATA.heap_top], ecx |
||
861 | |||
862 | mov eax,[ebx+APPDATA.mem_size] |
||
863 | mov [edx+APPDATA.mem_size], eax |
||
864 | |||
865 | mov ecx,[ebx+APPDATA.dir_table] |
||
866 | mov [edx+APPDATA.dir_table],ecx ;copy page directory |
||
867 | |||
868 | lea eax, [app_cmdline] |
||
869 | stdcall set_app_params ,[slot],eax,dword 0,\ |
||
870 | dword 0,dword 0 |
||
871 | |||
164 | serge | 872 | mov esi,new_process_running |
873 | call sys_msg_board_str ;output information about succefull startup |
||
874 | |||
875 | mov [application_table_status],0 ;unlock application_table_status mutex |
||
876 | mov eax,[process_number] ;set result |
||
877 | ret |
||
878 | .failed: |
||
879 | mov [application_table_status],0 |
||
880 | mov eax,-1 |
||
881 | ret |
||
882 | endp |
||
883 | |||
276 | serge | 884 | ; param |
885 | ; ebx=mutex |
||
886 | |||
164 | serge | 887 | align 4 |
276 | serge | 888 | wait_mutex: |
889 | push eax |
||
890 | push ebx |
||
321 | diamond | 891 | .do_wait: |
164 | serge | 892 | cmp dword [ebx],0 |
893 | je .get_lock |
||
894 | call change_task |
||
321 | diamond | 895 | jmp .do_wait |
164 | serge | 896 | .get_lock: |
897 | mov eax, 1 |
||
898 | xchg eax, [ebx] |
||
899 | test eax, eax |
||
321 | diamond | 900 | jnz .do_wait |
276 | serge | 901 | pop ebx |
902 | pop eax |
||
164 | serge | 903 | ret |
904 | |||
237 | serge | 905 | align 4 |
906 | proc set_app_params stdcall,slot:dword, params:dword,\ |
||
907 | cmd_line:dword, app_path:dword, flags:dword |
||
164 | serge | 908 | |
357 | serge | 909 | locals |
910 | pl0_stack dd ? |
||
911 | endl |
||
237 | serge | 912 | |
418 | serge | 913 | stdcall kernel_alloc, RING0_STACK_SIZE+512 |
357 | serge | 914 | mov [pl0_stack], eax |
915 | |||
418 | serge | 916 | lea edi, [eax+RING0_STACK_SIZE] |
357 | serge | 917 | |
918 | mov eax, [slot] |
||
919 | mov ebx, eax |
||
920 | |||
921 | shl eax, 8 |
||
380 | serge | 922 | mov [eax+SLOT_BASE+APPDATA.fpu_state], edi |
923 | mov [eax+SLOT_BASE+APPDATA.fpu_handler], 0 |
||
924 | mov [eax+SLOT_BASE+APPDATA.sse_handler], 0 |
||
357 | serge | 925 | |
926 | mov esi, fpu_data |
||
237 | serge | 927 | mov ecx, 512/4 |
928 | rep movsd |
||
929 | |||
357 | serge | 930 | cmp ebx,[TASK_COUNT] |
931 | jle .noinc |
||
932 | inc dword [TASK_COUNT] ;update number of processes |
||
237 | serge | 933 | .noinc: |
281 | serge | 934 | shl ebx,8 |
380 | serge | 935 | lea edx, [ebx+SLOT_BASE+APP_EV_OFFSET] |
936 | mov [SLOT_BASE+APPDATA.fd_ev+ebx],edx |
||
937 | mov [SLOT_BASE+APPDATA.bk_ev+ebx],edx |
||
354 | serge | 938 | |
939 | add edx, APP_OBJ_OFFSET-APP_EV_OFFSET |
||
380 | serge | 940 | mov [SLOT_BASE+APPDATA.fd_obj+ebx],edx |
941 | mov [SLOT_BASE+APPDATA.bk_obj+ebx],edx |
||
237 | serge | 942 | |
281 | serge | 943 | mov ecx, [def_cursor] |
380 | serge | 944 | mov [SLOT_BASE+APPDATA.cursor+ebx],ecx |
357 | serge | 945 | mov eax, [pl0_stack] |
380 | serge | 946 | mov [SLOT_BASE+APPDATA.pl0_stack+ebx],eax |
281 | serge | 947 | |
948 | shr ebx,3 |
||
237 | serge | 949 | mov eax, new_app_base |
950 | mov dword [CURRENT_TASK+ebx+0x10],eax |
||
951 | |||
952 | .add_command_line: |
||
953 | mov edx,[params] |
||
954 | mov edx,[edx] ;app_cmdline |
||
955 | test edx,edx |
||
956 | jz @F ;application don't need parameters |
||
281 | serge | 957 | |
958 | mov eax, edx |
||
959 | add eax, 256 |
||
960 | jc @f |
||
961 | |||
380 | serge | 962 | cmp eax, [SLOT_BASE+APPDATA.mem_size+ebx*8] |
281 | serge | 963 | ja @f |
964 | |||
419 | serge | 965 | ; add edx, new_app_base |
262 | diamond | 966 | stdcall k_strncpy, edx, [cmd_line], 256 |
237 | serge | 967 | @@: |
968 | mov edx,[params] |
||
969 | mov edx, [edx+4] ;app_path |
||
970 | test edx,edx |
||
971 | jz @F ;application don't need path of file |
||
262 | diamond | 972 | mov eax, edx |
973 | add eax, 1024 |
||
974 | jc @f |
||
380 | serge | 975 | cmp eax, [SLOT_BASE+APPDATA.mem_size+ebx*8] |
262 | diamond | 976 | ja @f |
419 | serge | 977 | ; add edx, new_app_base |
262 | diamond | 978 | stdcall k_strncpy, edx, [app_path], 1024 |
237 | serge | 979 | @@: |
980 | mov ebx,[slot] |
||
981 | mov eax,ebx |
||
982 | shl ebx,5 |
||
420 | serge | 983 | lea ecx,[draw_data+ebx] ;ecx - pointer to draw data |
984 | |||
237 | serge | 985 | ; set window state to 'normal' (non-minimized/maximized/rolled-up) state |
986 | mov [ebx+window_data+WDATA.fl_wstate], WSTATE_NORMAL |
||
987 | mov [ebx+window_data+WDATA.fl_redraw], 1 |
||
988 | add ebx,CURRENT_TASK ;ebx - pointer to information about process |
||
989 | mov [ebx+TASKDATA.wnd_number],al;set window number on screen = process slot |
||
990 | |||
991 | mov [ebx+TASKDATA.event_mask],dword 1+2+4 ;set default event flags (see 40 function) |
||
992 | |||
993 | inc dword [process_number] |
||
994 | mov eax,[process_number] |
||
995 | mov [ebx+4],eax ;set PID |
||
996 | |||
997 | ;set draw data to full screen |
||
998 | |||
999 | mov [ecx+0],dword 0 |
||
1000 | mov [ecx+4],dword 0 |
||
381 | serge | 1001 | mov eax,[ScreenWidth] |
237 | serge | 1002 | mov [ecx+8],eax |
381 | serge | 1003 | mov eax,[ScreenHeight] |
237 | serge | 1004 | mov [ecx+12],eax |
1005 | |||
1006 | mov edi,[slot] |
||
1007 | imul edi,tss_step |
||
1008 | add edi,tss_data |
||
1009 | mov ecx,128/4 |
||
1010 | xor eax, eax |
||
1011 | cld |
||
1012 | rep stosd |
||
1013 | ;Add IO access table - bit array of permitted ports |
||
1014 | not eax |
||
1015 | mov ecx,2048 |
||
1016 | rep stosd ; access to 4096*8=65536 ports |
||
1017 | sub edi, tss_step |
||
1018 | |||
1019 | ;set cr3 register in TSS of application |
||
1020 | mov ecx, [slot] |
||
1021 | shl ecx, 8 |
||
380 | serge | 1022 | mov eax,[SLOT_BASE+ecx+APPDATA.dir_table] |
237 | serge | 1023 | mov [edi+TSS._cr3],eax |
1024 | |||
1025 | mov esi,[params] |
||
1026 | mov eax, [esi+0x08] ;app_eip |
||
1027 | mov [edi+TSS._eip],eax ;set eip in TSS |
||
1028 | mov eax, [esi+0x0C] ;app_esp |
||
1029 | mov [edi+TSS._esp],eax ;set stack in TSS |
||
420 | serge | 1030 | mov [edi+TSS._eflags],dword 0x1202 |
237 | serge | 1031 | |
1032 | mov [edi+TSS._cs],app_code ;selector of code segment |
||
1033 | mov [edi+TSS._ss],app_data |
||
1034 | mov [edi+TSS._ds],app_data |
||
1035 | mov [edi+TSS._es],app_data |
||
1036 | mov [edi+TSS._fs],app_data |
||
1037 | mov [edi+TSS._gs],graph_data ;selector of graphic segment |
||
1038 | mov [edi+TSS._io],word 128 |
||
420 | serge | 1039 | mov [edi+TSS._ss0], os_stack |
357 | serge | 1040 | mov ebx, [pl0_stack] |
418 | serge | 1041 | add ebx, RING0_STACK_SIZE |
237 | serge | 1042 | mov [edi+TSS._esp0],ebx |
1043 | |||
420 | serge | 1044 | xor eax, eax |
1045 | mov ebx, [pl0_stack] |
||
1046 | lea ecx, [ebx+REG_EIP] |
||
1047 | |||
1048 | mov [ebx+REG_RET], dword irq0.return |
||
1049 | mov [ebx+REG_EDI], eax |
||
1050 | mov [ebx+REG_ESI], eax |
||
1051 | mov [ebx+REG_EBP], eax |
||
1052 | mov [ebx+REG_ESP], ecx ;ebx+REG_EIP |
||
1053 | mov [ebx+REG_EBX], eax |
||
1054 | mov [ebx+REG_EDX], eax |
||
1055 | mov [ebx+REG_ECX], eax |
||
1056 | mov [ebx+REG_EAX], eax |
||
1057 | |||
1058 | mov [ebx+REG_EFL_2], dword 0x1002 |
||
1059 | |||
1060 | mov eax, [esi+0x08] ;app_eip |
||
1061 | mov [ebx+REG_EIP], eax ;app_entry |
||
1062 | mov [ebx+REG_CS], dword app_code |
||
1063 | mov [ebx+REG_EFLAGS], dword 0x1202 |
||
1064 | |||
1065 | mov eax, [esi+0x0C] ;app_esp |
||
1066 | mov [ebx+REG_APP_ESP], eax ;app_stack |
||
1067 | mov [ebx+REG_SS], dword app_data |
||
1068 | |||
1069 | lea ecx, [ebx+REG_RET] |
||
1070 | mov ebx, [slot] |
||
1071 | shl ebx, 8 |
||
1072 | mov [ebx+SLOT_BASE+APPDATA.saved_esp], ecx |
||
1073 | |||
237 | serge | 1074 | mov ecx, edi ;ecx - address of application TSS |
1075 | mov ebx,[slot] |
||
1076 | shl ebx,3 |
||
1077 | ;set TSS descriptor |
||
1078 | mov [ebx+gdts+tss0+0],word tss_step ;limit (size) |
||
1079 | mov [ebx+gdts+tss0+2],cx ;part of offset |
||
1080 | shr ecx,16 |
||
1081 | mov [ebx+gdts+tss0+4],cl ;part of offset |
||
1082 | mov [ebx+gdts+tss0+7],ch ;part of offset |
||
1083 | mov [ebx+gdts+tss0+5],word 01010000b*256+11101001b ;system flags |
||
1084 | |||
1085 | ;flush keyboard and buttons queue |
||
1086 | mov [KEY_COUNT],byte 0 |
||
1087 | mov [BTN_COUNT],byte 0 |
||
1088 | |||
1089 | mov edi,[slot] |
||
1090 | shl edi,5 |
||
1091 | add edi,window_data |
||
1092 | mov ebx,[slot] |
||
1093 | movzx esi,word [WIN_STACK+ebx*2] |
||
1094 | lea esi,[WIN_POS+esi*2] |
||
1095 | call windowactivate ;gui initialization |
||
1096 | |||
1097 | mov ebx,[slot] |
||
1098 | shl ebx,5 |
||
1099 | mov [CURRENT_TASK+ebx+0xa],byte 0 ;set process state - running |
||
1100 | ; set if debuggee |
||
1101 | mov eax, [flags] |
||
1102 | test byte [flags], 1 |
||
1103 | jz .no_debug |
||
1104 | mov [CURRENT_TASK+ebx+0xa],byte 1 ;set process state - suspended |
||
1105 | mov eax,[CURRENT_TASK] |
||
380 | serge | 1106 | mov [SLOT_BASE+ebx*8+0xac],eax ;set debugger PID - current |
237 | serge | 1107 | .no_debug: |
1108 | mov esi,new_process_running |
||
1109 | call sys_msg_board_str ;output information about succefull startup |
||
1110 | ret |
||
420 | serge | 1111 | |
1112 | if 0 |
||
1113 | ; set stack frame |
||
1114 | |||
1115 | xor eax, eax |
||
1116 | lea ecx, [ebx+REG_EIP] |
||
1117 | mov ebx, [pl0_stack] |
||
1118 | mov esi,[params] |
||
1119 | |||
1120 | mov [ebx+REG_RET], dword irq0.return |
||
1121 | mov [ebx+REG_EDI], eax |
||
1122 | mov [ebx+REG_ESI], eax |
||
1123 | mov [ebx+REG_EBP], eax |
||
1124 | mov [ebx+REG_ESP], ecx ;ebx+REG_EIP |
||
1125 | mov [ebx+REG_EBX], eax |
||
1126 | mov [ebx+REG_EDX], eax |
||
1127 | mov [ebx+REG_ECX], eax |
||
1128 | mov [ebx+REG_EAX], eax |
||
1129 | |||
1130 | mov [ebx+REG_EFL_2], dword 0x1002 |
||
1131 | |||
1132 | mov eax, [esi+0x08] ;app_eip |
||
1133 | mov [ebx+REG_EIP], eax ;app_entry |
||
1134 | mov [ebx+REG_CS], dword app_code |
||
1135 | mov [ebx+REG_EFLAGS], dword 0x1202 |
||
1136 | |||
1137 | mov eax, [esi+0x0C] ;app_esp |
||
1138 | mov [ebx+REG_ESP], eax ;app_stack |
||
1139 | mov [ebx+REG_SS], dword app_data |
||
1140 | end if |
||
1141 | |||
237 | serge | 1142 | endp |
1143 | |||
164 | serge | 1144 | include "debug.inc"256 |
1145 |