Rev 1276 | Rev 1300 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
||
1289 | diamond | 3 | ;; Copyright (C) KolibriOS team 2004-2009. All rights reserved. ;; |
431 | serge | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
||
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
||
164 | serge | 7 | |
593 | mikedld | 8 | $Revision: 1289 $ |
9 | |||
10 | |||
164 | serge | 11 | align 4 |
12 | proc alloc_page |
||
13 | |||
14 | pushfd |
||
15 | cli |
||
660 | serge | 16 | push ebx |
164 | serge | 17 | mov ebx, [page_start] |
18 | mov ecx, [page_end] |
||
19 | .l1: |
||
20 | bsf eax,[ebx]; |
||
21 | jnz .found |
||
22 | add ebx,4 |
||
23 | cmp ebx, ecx |
||
24 | jb .l1 |
||
660 | serge | 25 | pop ebx |
164 | serge | 26 | popfd |
27 | xor eax,eax |
||
28 | ret |
||
29 | .found: |
||
30 | btr [ebx], eax |
||
31 | mov [page_start],ebx |
||
32 | sub ebx, sys_pgmap |
||
254 | serge | 33 | lea eax, [eax+ebx*8] |
164 | serge | 34 | shl eax, 12 |
35 | dec [pg_data.pages_free] |
||
660 | serge | 36 | pop ebx |
164 | serge | 37 | popfd |
38 | ret |
||
39 | endp |
||
40 | |||
41 | align 4 |
||
42 | proc alloc_pages stdcall, count:dword |
||
43 | pushfd |
||
660 | serge | 44 | push ebx |
45 | push edi |
||
164 | serge | 46 | cli |
47 | mov eax, [count] |
||
48 | add eax, 7 |
||
49 | shr eax, 3 |
||
50 | mov [count], eax |
||
51 | cmp eax, [pg_data.pages_free] |
||
52 | ja .fail |
||
53 | |||
54 | mov ecx, [page_start] |
||
55 | mov ebx, [page_end] |
||
56 | .find: |
||
57 | mov edx, [count] |
||
58 | mov edi, ecx |
||
59 | .match: |
||
60 | cmp byte [ecx], 0xFF |
||
61 | jne .next |
||
62 | dec edx |
||
63 | jz .ok |
||
64 | inc ecx |
||
65 | cmp ecx,ebx |
||
66 | jb .match |
||
660 | serge | 67 | .fail: |
68 | xor eax, eax |
||
69 | pop edi |
||
70 | pop ebx |
||
164 | serge | 71 | popfd |
72 | ret |
||
73 | .next: |
||
74 | inc ecx |
||
75 | cmp ecx, ebx |
||
76 | jb .find |
||
660 | serge | 77 | pop edi |
78 | pop ebx |
||
164 | serge | 79 | popfd |
80 | xor eax, eax |
||
81 | ret |
||
82 | .ok: |
||
83 | sub ecx, edi |
||
84 | inc ecx |
||
663 | serge | 85 | push esi |
164 | serge | 86 | mov esi, edi |
87 | xor eax, eax |
||
88 | rep stosb |
||
89 | sub esi, sys_pgmap |
||
90 | shl esi, 3+12 |
||
91 | mov eax, esi |
||
92 | mov ebx, [count] |
||
93 | shl ebx, 3 |
||
94 | sub [pg_data.pages_free], ebx |
||
663 | serge | 95 | pop esi |
660 | serge | 96 | pop edi |
97 | pop ebx |
||
164 | serge | 98 | popfd |
99 | ret |
||
100 | endp |
||
101 | |||
102 | align 4 |
||
103 | proc map_page stdcall,lin_addr:dword,phis_addr:dword,flags:dword |
||
321 | diamond | 104 | push ebx |
164 | serge | 105 | mov eax, [phis_addr] |
106 | and eax, not 0xFFF |
||
107 | or eax, [flags] |
||
108 | mov ebx, [lin_addr] |
||
109 | shr ebx, 12 |
||
365 | serge | 110 | mov [page_tabs+ebx*4], eax |
164 | serge | 111 | mov eax, [lin_addr] |
112 | invlpg [eax] |
||
321 | diamond | 113 | pop ebx |
164 | serge | 114 | ret |
115 | endp |
||
116 | |||
117 | align 4 |
||
281 | serge | 118 | map_space: ;not implemented |
119 | |||
120 | |||
121 | ret |
||
122 | |||
123 | |||
124 | align 4 |
||
164 | serge | 125 | proc free_page |
126 | ;arg: eax page address |
||
127 | pushfd |
||
128 | cli |
||
819 | serge | 129 | shr eax, 12 ;page index |
130 | bts dword [sys_pgmap], eax ;that's all! |
||
291 | serge | 131 | cmc |
328 | serge | 132 | adc [pg_data.pages_free], 0 |
164 | serge | 133 | shr eax, 3 |
819 | serge | 134 | and eax, not 3 ;dword offset from page_map |
448 | diamond | 135 | add eax, sys_pgmap |
164 | serge | 136 | cmp [page_start], eax |
137 | ja @f |
||
138 | popfd |
||
139 | ret |
||
140 | @@: |
||
141 | mov [page_start], eax |
||
142 | popfd |
||
143 | ret |
||
144 | endp |
||
145 | |||
741 | serge | 146 | proc map_io_mem stdcall, base:dword, size:dword, flags:dword |
147 | |||
148 | push ebx |
||
149 | push edi |
||
150 | mov eax, [size] |
||
151 | add eax, 4095 |
||
152 | and eax, -4096 |
||
153 | mov [size], eax |
||
154 | stdcall alloc_kernel_space, eax |
||
155 | test eax, eax |
||
156 | jz .fail |
||
157 | push eax |
||
158 | |||
159 | mov edi, 0x1000 |
||
160 | mov ebx, eax |
||
161 | mov ecx,[size] |
||
162 | mov edx, [base] |
||
163 | shr eax, 12 |
||
164 | shr ecx, 12 |
||
165 | and edx, -4096 |
||
166 | or edx, [flags] |
||
167 | @@: |
||
168 | mov [page_tabs+eax*4], edx |
||
819 | serge | 169 | ; push eax |
1275 | serge | 170 | invlpg [ebx] |
819 | serge | 171 | ; pop eax |
741 | serge | 172 | inc eax |
173 | add ebx, edi |
||
174 | add edx, edi |
||
175 | loop @B |
||
176 | |||
177 | pop eax |
||
178 | mov edx, [base] |
||
179 | and edx, 4095 |
||
180 | add eax, edx |
||
181 | .fail: |
||
182 | pop edi |
||
183 | pop ebx |
||
184 | ret |
||
185 | endp |
||
186 | |||
279 | serge | 187 | ; param |
328 | serge | 188 | ; eax= page base + page flags |
819 | serge | 189 | ; ebx= linear address |
281 | serge | 190 | ; ecx= count |
191 | |||
192 | align 4 |
||
328 | serge | 193 | commit_pages: |
741 | serge | 194 | push edi |
328 | serge | 195 | test ecx, ecx |
196 | jz .fail |
||
281 | serge | 197 | |
328 | serge | 198 | mov edi, ebx |
199 | mov ebx, pg_data.pg_mutex |
||
200 | call wait_mutex ;ebx |
||
201 | |||
202 | mov edx, 0x1000 |
||
203 | mov ebx, edi |
||
204 | shr ebx, 12 |
||
205 | @@: |
||
365 | serge | 206 | mov [page_tabs+ebx*4], eax |
819 | serge | 207 | ; push eax |
1275 | serge | 208 | invlpg [edi] |
819 | serge | 209 | ; pop eax |
328 | serge | 210 | add edi, edx |
211 | add eax, edx |
||
212 | inc ebx |
||
213 | dec ecx |
||
214 | jnz @B |
||
215 | mov [pg_data.pg_mutex],ecx |
||
216 | .fail: |
||
741 | serge | 217 | pop edi |
281 | serge | 218 | ret |
219 | |||
328 | serge | 220 | |
281 | serge | 221 | ; param |
279 | serge | 222 | ; eax= base |
281 | serge | 223 | ; ecx= count |
279 | serge | 224 | |
164 | serge | 225 | align 4 |
279 | serge | 226 | release_pages: |
321 | diamond | 227 | |
228 | pushad |
||
279 | serge | 229 | mov ebx, pg_data.pg_mutex |
230 | call wait_mutex ;ebx |
||
231 | |||
232 | mov esi, eax |
||
233 | mov edi, eax |
||
234 | |||
235 | shr esi, 10 |
||
365 | serge | 236 | add esi, page_tabs |
328 | serge | 237 | |
238 | mov ebp, [pg_data.pages_free] |
||
279 | serge | 239 | mov ebx, [page_start] |
240 | mov edx, sys_pgmap |
||
241 | @@: |
||
242 | xor eax, eax |
||
243 | xchg eax, [esi] |
||
924 | serge | 244 | push eax |
279 | serge | 245 | invlpg [edi] |
924 | serge | 246 | pop eax |
279 | serge | 247 | |
248 | test eax, 1 |
||
249 | jz .next |
||
250 | |||
251 | shr eax, 12 |
||
252 | bts [edx], eax |
||
291 | serge | 253 | cmc |
328 | serge | 254 | adc ebp, 0 |
279 | serge | 255 | shr eax, 3 |
256 | and eax, -4 |
||
257 | add eax, edx |
||
258 | cmp eax, ebx |
||
259 | jae .next |
||
260 | |||
261 | mov ebx, eax |
||
262 | .next: |
||
263 | add edi, 0x1000 |
||
264 | add esi, 4 |
||
265 | dec ecx |
||
266 | jnz @B |
||
328 | serge | 267 | mov [pg_data.pages_free], ebp |
279 | serge | 268 | and [pg_data.pg_mutex],0 |
321 | diamond | 269 | popad |
279 | serge | 270 | ret |
271 | |||
819 | serge | 272 | ; param |
273 | ; eax= base |
||
274 | ; ecx= count |
||
275 | |||
279 | serge | 276 | align 4 |
819 | serge | 277 | unmap_pages: |
278 | |||
279 | push edi |
||
280 | |||
281 | mov edi, eax |
||
282 | mov edx, eax |
||
283 | |||
284 | shr edi, 10 |
||
285 | add edi, page_tabs |
||
286 | |||
287 | xor eax, eax |
||
288 | @@: |
||
289 | stosd |
||
290 | invlpg [edx] |
||
291 | add edx, 0x1000 |
||
292 | loop @b |
||
293 | |||
294 | pop edi |
||
295 | ret |
||
296 | |||
297 | |||
298 | align 4 |
||
188 | serge | 299 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
321 | diamond | 300 | push ebx |
164 | serge | 301 | mov ebx, [lin_addr] |
302 | shr ebx, 22 |
||
303 | mov eax, [phis_addr] |
||
304 | and eax, not 0xFFF |
||
305 | or eax, PG_UW ;+PG_NOCACHE |
||
378 | serge | 306 | mov dword [master_tab+ebx*4], eax |
164 | serge | 307 | mov eax, [lin_addr] |
308 | shr eax, 10 |
||
365 | serge | 309 | add eax, page_tabs |
164 | serge | 310 | invlpg [eax] |
321 | diamond | 311 | pop ebx |
164 | serge | 312 | ret |
313 | endp |
||
314 | |||
315 | align 4 |
||
316 | proc init_LFB |
||
378 | serge | 317 | locals |
318 | pg_count dd ? |
||
319 | endl |
||
320 | |||
164 | serge | 321 | cmp dword [LFBAddress], -1 |
322 | jne @f |
||
412 | serge | 323 | mov [BOOT_VAR+0x901c],byte 2 |
164 | serge | 324 | stdcall kernel_alloc, 0x280000 |
325 | mov [LFBAddress], eax |
||
326 | ret |
||
327 | @@: |
||
328 | test [SCR_MODE],word 0100000000000000b |
||
211 | serge | 329 | jnz @f |
412 | serge | 330 | mov [BOOT_VAR+0x901c],byte 2 |
211 | serge | 331 | ret |
332 | @@: |
||
490 | serge | 333 | call init_mtrr |
334 | |||
378 | serge | 335 | mov edx, LFB_BASE |
336 | mov esi, [LFBAddress] |
||
465 | serge | 337 | mov edi, 0x00800000 |
379 | serge | 338 | mov dword [exp_lfb+4], edx |
214 | serge | 339 | |
164 | serge | 340 | shr edi, 12 |
341 | mov [pg_count], edi |
||
342 | shr edi, 10 |
||
343 | |||
344 | bt [cpu_caps], CAPS_PSE |
||
345 | jnc .map_page_tables |
||
346 | or esi, PG_LARGE+PG_UW |
||
465 | serge | 347 | mov edx, sys_pgdir+(LFB_BASE shr 20) |
164 | serge | 348 | @@: |
465 | serge | 349 | mov [edx], esi |
378 | serge | 350 | add edx, 4 |
164 | serge | 351 | add esi, 0x00400000 |
352 | dec edi |
||
353 | jnz @B |
||
354 | |||
207 | serge | 355 | bt [cpu_caps], CAPS_PGE |
356 | jnc @F |
||
465 | serge | 357 | or dword [sys_pgdir+(LFB_BASE shr 20)], PG_GLOBAL |
207 | serge | 358 | @@: |
378 | serge | 359 | mov dword [LFBAddress], LFB_BASE |
164 | serge | 360 | mov eax, cr3 ;flush TLB |
361 | mov cr3, eax |
||
362 | ret |
||
363 | |||
364 | .map_page_tables: |
||
365 | |||
465 | serge | 366 | @@: |
164 | serge | 367 | call alloc_page |
378 | serge | 368 | stdcall map_page_table, edx, eax |
389 | serge | 369 | add edx, 0x00400000 |
164 | serge | 370 | dec edi |
465 | serge | 371 | jnz @B |
164 | serge | 372 | |
373 | mov eax, [LFBAddress] |
||
378 | serge | 374 | mov edi, page_tabs + (LFB_BASE shr 10) |
164 | serge | 375 | or eax, PG_UW |
376 | mov ecx, [pg_count] |
||
378 | serge | 377 | cld |
389 | serge | 378 | @@: |
379 | stosd |
||
380 | add eax, 0x1000 |
||
381 | dec ecx |
||
382 | jnz @B |
||
164 | serge | 383 | |
378 | serge | 384 | mov dword [LFBAddress], LFB_BASE |
164 | serge | 385 | mov eax, cr3 ;flush TLB |
386 | mov cr3, eax |
||
387 | |||
388 | ret |
||
389 | endp |
||
390 | |||
391 | align 4 |
||
392 | proc new_mem_resize stdcall, new_size:dword |
||
393 | |||
276 | serge | 394 | mov ebx, pg_data.pg_mutex |
395 | call wait_mutex ;ebx |
||
164 | serge | 396 | |
397 | mov edi, [new_size] |
||
398 | add edi,4095 |
||
399 | and edi,not 4095 |
||
400 | mov [new_size], edi |
||
401 | |||
465 | serge | 402 | mov edx,[current_slot] |
403 | cmp [edx+APPDATA.heap_base],0 |
||
172 | serge | 404 | jne .exit |
405 | |||
465 | serge | 406 | mov esi, [edx+APPDATA.mem_size] |
164 | serge | 407 | add esi, 4095 |
408 | and esi, not 4095 |
||
409 | |||
410 | cmp edi, esi |
||
411 | jae .expand |
||
412 | |||
413 | shr edi, 12 |
||
414 | shr esi, 12 |
||
415 | @@: |
||
378 | serge | 416 | mov eax, [app_page_tabs+edi*4] |
164 | serge | 417 | test eax, 1 |
418 | jz .next |
||
378 | serge | 419 | mov dword [app_page_tabs+edi*4], 2 |
164 | serge | 420 | mov ebx, edi |
421 | shl ebx, 12 |
||
924 | serge | 422 | push eax |
659 | serge | 423 | invlpg [ebx] |
924 | serge | 424 | pop eax |
164 | serge | 425 | call free_page |
426 | |||
427 | .next: add edi, 1 |
||
428 | cmp edi, esi |
||
429 | jb @B |
||
430 | |||
431 | .update_size: |
||
465 | serge | 432 | mov ebx, [new_size] |
433 | call update_mem_size |
||
164 | serge | 434 | |
435 | xor eax, eax |
||
436 | dec [pg_data.pg_mutex] |
||
437 | ret |
||
438 | .expand: |
||
439 | |||
440 | push esi |
||
441 | push edi |
||
442 | |||
443 | add edi, 0x3FFFFF |
||
444 | and edi, not(0x3FFFFF) |
||
445 | add esi, 0x3FFFFF |
||
446 | and esi, not(0x3FFFFF) |
||
447 | |||
448 | cmp esi, edi |
||
449 | jae .grow |
||
450 | |||
451 | xchg esi, edi |
||
452 | |||
453 | @@: |
||
454 | call alloc_page |
||
455 | test eax, eax |
||
1103 | diamond | 456 | jz .exit_pop |
164 | serge | 457 | |
188 | serge | 458 | stdcall map_page_table, edi, eax |
164 | serge | 459 | |
460 | push edi |
||
461 | shr edi, 10 |
||
365 | serge | 462 | add edi, page_tabs |
164 | serge | 463 | mov ecx, 1024 |
464 | xor eax, eax |
||
465 | cld |
||
466 | rep stosd |
||
467 | pop edi |
||
468 | |||
469 | add edi, 0x00400000 |
||
470 | cmp edi, esi |
||
471 | jb @B |
||
472 | .grow: |
||
473 | pop edi |
||
474 | pop esi |
||
475 | @@: |
||
476 | call alloc_page |
||
477 | test eax, eax |
||
478 | jz .exit |
||
479 | stdcall map_page,esi,eax,dword PG_UW |
||
480 | |||
481 | push edi |
||
482 | mov edi, esi |
||
483 | xor eax, eax |
||
484 | mov ecx, 1024 |
||
485 | cld |
||
486 | rep stosd |
||
487 | pop edi |
||
488 | |||
489 | add esi, 0x1000 |
||
490 | cmp esi, edi |
||
294 | diamond | 491 | jb @B |
164 | serge | 492 | |
493 | jmp .update_size |
||
1103 | diamond | 494 | .exit_pop: |
495 | pop edi |
||
496 | pop esi |
||
164 | serge | 497 | .exit: |
498 | xor eax, eax |
||
499 | inc eax |
||
500 | dec [pg_data.pg_mutex] |
||
501 | ret |
||
502 | endp |
||
503 | |||
294 | diamond | 504 | update_mem_size: |
465 | serge | 505 | ; in: edx = slot base |
294 | diamond | 506 | ; ebx = new memory size |
507 | ; destroys eax,ecx,edx |
||
508 | |||
465 | serge | 509 | mov [APPDATA.mem_size+edx],ebx |
294 | diamond | 510 | ;search threads and update |
511 | ;application memory size infomation |
||
465 | serge | 512 | mov ecx,[APPDATA.dir_table+edx] |
294 | diamond | 513 | mov eax,2 |
514 | |||
515 | .search_threads: |
||
516 | ;eax = current slot |
||
517 | ;ebx = new memory size |
||
518 | ;ecx = page directory |
||
519 | cmp eax,[TASK_COUNT] |
||
520 | jg .search_threads_end |
||
521 | mov edx,eax |
||
522 | shl edx,5 |
||
523 | cmp word [CURRENT_TASK+edx+TASKDATA.state],9 ;if slot empty? |
||
524 | jz .search_threads_next |
||
525 | shl edx,3 |
||
380 | serge | 526 | cmp [SLOT_BASE+edx+APPDATA.dir_table],ecx ;if it is our thread? |
294 | diamond | 527 | jnz .search_threads_next |
380 | serge | 528 | mov [SLOT_BASE+edx+APPDATA.mem_size],ebx ;update memory size |
294 | diamond | 529 | .search_threads_next: |
530 | inc eax |
||
531 | jmp .search_threads |
||
532 | .search_threads_end: |
||
533 | ret |
||
534 | |||
285 | serge | 535 | ; param |
536 | ; eax= linear address |
||
537 | ; |
||
538 | ; retval |
||
539 | ; eax= phisical page address |
||
540 | |||
164 | serge | 541 | align 4 |
285 | serge | 542 | get_pg_addr: |
543 | shr eax, 12 |
||
365 | serge | 544 | mov eax, [page_tabs+eax*4] |
164 | serge | 545 | and eax, 0xFFFFF000 |
546 | ret |
||
547 | |||
465 | serge | 548 | |
188 | serge | 549 | align 4 |
1105 | Galkov | 550 | ; Now it is called from core/sys32::exc_c (see stack frame there) |
164 | serge | 551 | proc page_fault_handler |
465 | serge | 552 | |
1056 | Galkov | 553 | .err_addr equ ebp-4 |
709 | diamond | 554 | |
1105 | Galkov | 555 | push ebx ;save exception number (#PF) |
1056 | Galkov | 556 | mov ebp, esp |
557 | mov ebx, cr2 |
||
1105 | Galkov | 558 | push ebx ;that is locals: .err_addr = cr2 |
1056 | Galkov | 559 | inc [pg_data.pages_faults] |
465 | serge | 560 | |
561 | ; push eax |
||
562 | ; push edx |
||
563 | ; mov edx, 0x400 ;bochs |
||
564 | ; mov al,0xff ;bochs |
||
565 | ; out dx, al ;bochs |
||
566 | ; pop edx |
||
567 | ; pop eax |
||
164 | serge | 568 | |
1056 | Galkov | 569 | mov eax, [pf_err_code] |
164 | serge | 570 | |
1056 | Galkov | 571 | cmp ebx, OS_BASE ;ebx == .err_addr |
572 | jb .user_space ;ñòðàíèöà â ïàìÿòè ïðèëîæåíèÿ ; |
||
188 | serge | 573 | |
1056 | Galkov | 574 | cmp ebx, page_tabs |
575 | jb .kernel_space ;ñòðàíèöà â ïàìÿòè ÿäðà |
||
164 | serge | 576 | |
1056 | Galkov | 577 | cmp ebx, kernel_tabs |
578 | jb .alloc;.app_tabs ;òàáëèöû ñòðàíèö ïðèëîæåíèÿ ; |
||
579 | ;ïðîñòî ñîçäàäèì îäíó |
||
580 | if 0 ;ïîêà ýòî ïðîñòî ëèøíåå |
||
581 | cmp ebx, LFB_BASE |
||
582 | jb .core_tabs ;òàáëèöû ñòðàíèö ÿäðà |
||
583 | ;Îøèáêà |
||
584 | .lfb: |
||
585 | ;îáëàñòü LFB |
||
586 | ;Îøèáêà |
||
587 | jmp .fail |
||
588 | end if |
||
589 | .core_tabs: |
||
590 | .fail: ;simply return to caller |
||
591 | mov esp, ebp |
||
1105 | Galkov | 592 | pop ebx ;restore exception number (#PF) |
1056 | Galkov | 593 | ret |
378 | serge | 594 | |
164 | serge | 595 | .user_space: |
1056 | Galkov | 596 | test eax, PG_MAP |
597 | jnz .err_access ;Ñòðàíèöà ïðèñóòñòâóåò |
||
598 | ;Îøèáêà äîñòóïà ? |
||
465 | serge | 599 | |
1056 | Galkov | 600 | shr ebx, 12 |
601 | mov ecx, ebx |
||
602 | shr ecx, 10 |
||
603 | mov edx, [master_tab+ecx*4] |
||
604 | test edx, PG_MAP |
||
605 | jz .fail ;òàáëèöà ñòðàíèö íå ñîçäàíà |
||
606 | ;íåâåðíûé àäðåñ â ïðîãðàììå |
||
172 | serge | 607 | |
1056 | Galkov | 608 | mov eax, [page_tabs+ebx*4] |
609 | test eax, 2 |
||
610 | jz .fail ;àäðåñ íå çàðåçåðâèðîâàí äëÿ ; |
||
611 | ;èñïîëüçîâàíèÿ. Îøèáêà |
||
188 | serge | 612 | .alloc: |
1056 | Galkov | 613 | call alloc_page |
614 | test eax, eax |
||
615 | jz .fail |
||
164 | serge | 616 | |
1289 | diamond | 617 | stdcall map_page,[.err_addr],eax,PG_UW |
164 | serge | 618 | |
1056 | Galkov | 619 | mov edi, [.err_addr] |
620 | and edi, 0xFFFFF000 |
||
621 | mov ecx, 1024 |
||
622 | xor eax, eax |
||
623 | ;cld ;caller is duty for this |
||
624 | rep stosd |
||
625 | .exit: ;iret with repeat fault instruction |
||
1105 | Galkov | 626 | add esp,12 ;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
1056 | Galkov | 627 | restore_ring3_context |
628 | iretd |
||
465 | serge | 629 | |
1289 | diamond | 630 | .err_access: |
631 | ; access denied? this may be a result of copy-on-write protection for DLL |
||
632 | ; check list of HDLLs |
||
633 | and ebx, not 0xFFF |
||
634 | mov eax, [CURRENT_TASK] |
||
635 | shl eax, 8 |
||
636 | lea eax, [SLOT_BASE+eax+APP_OBJ_OFFSET] |
||
637 | mov esi, [eax+APPOBJ.fd] |
||
638 | .scan_hdll: |
||
639 | cmp esi, eax |
||
640 | jz .fail |
||
641 | cmp [esi+APPOBJ.magic], 'HDLL' |
||
642 | jnz .scan_hdll.next |
||
643 | mov edx, ebx |
||
644 | sub edx, [esi+HDLL.base] |
||
645 | cmp edx, [esi+HDLL.size] |
||
646 | jb .fault_in_hdll |
||
647 | .scan_hdll.next: |
||
648 | mov esi, [esi+APPOBJ.fd] |
||
649 | jmp .scan_hdll |
||
650 | .fault_in_hdll: |
||
651 | ; allocate new page, map it as rw and copy data |
||
652 | call alloc_page |
||
653 | test eax, eax |
||
654 | jz .fail |
||
655 | stdcall map_page,ebx,eax,PG_UW |
||
656 | mov edi, ebx |
||
657 | mov ecx, 1024 |
||
658 | sub ebx, [esi+HDLL.base] |
||
659 | mov esi, [esi+HDLL.parent] |
||
660 | mov esi, [esi+DLLDESCR.data] |
||
661 | add esi, ebx |
||
662 | rep movsd |
||
663 | jmp .exit |
||
465 | serge | 664 | |
665 | .kernel_space: |
||
1056 | Galkov | 666 | test eax, PG_MAP |
667 | jz .fail ;ñòðàíèöà íå ïðèñóòñòâóåò |
||
465 | serge | 668 | |
1056 | Galkov | 669 | test eax,12 ;U/S (+below) |
670 | jnz .fail ;ïðèëîæåíèå îáðàòèëîñü ê ïàìÿòè |
||
671 | ;ÿäðà |
||
672 | ;test eax, 8 |
||
673 | ;jnz .fail ;óñòàíîâëåí çàðåçåðâèðîâàííûé áèò |
||
674 | ;â òàáëèöàõ ñòðàíèö. äîáàâëåíî â P4/Xeon |
||
465 | serge | 675 | |
676 | ;ïîïûòêà çàïèñè â çàùèù¸ííóþ ñòðàíèöó ÿäðà |
||
677 | |||
1056 | Galkov | 678 | cmp ebx, tss._io_map_0 |
679 | jb .fail |
||
465 | serge | 680 | |
1056 | Galkov | 681 | cmp ebx, tss._io_map_0+8192 |
682 | jae .fail |
||
465 | serge | 683 | |
684 | ; io permission map |
||
685 | ; copy-on-write protection |
||
686 | |||
1056 | Galkov | 687 | call alloc_page |
688 | test eax, eax |
||
689 | jz .fail |
||
465 | serge | 690 | |
1056 | Galkov | 691 | push eax |
692 | stdcall map_page,[.err_addr],eax,dword PG_SW |
||
693 | pop eax |
||
694 | mov edi, [.err_addr] |
||
695 | and edi, -4096 |
||
696 | lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
||
465 | serge | 697 | |
1056 | Galkov | 698 | mov ebx, esi |
699 | shr ebx, 12 |
||
700 | mov edx, [current_slot] |
||
701 | or eax, PG_SW |
||
702 | mov [edx+APPDATA.io_map+ebx*4], eax |
||
465 | serge | 703 | |
1056 | Galkov | 704 | add esi, [default_io_map] |
705 | mov ecx, 4096/4 |
||
706 | ;cld ;caller is duty for this |
||
707 | rep movsd |
||
708 | jmp .exit |
||
164 | serge | 709 | endp |
710 | |||
711 | align 4 |
||
712 | proc map_mem stdcall, lin_addr:dword,pdir:dword,\ |
||
713 | ofs:dword,buf_size:dword |
||
714 | mov eax, [buf_size] |
||
715 | test eax, eax |
||
716 | jz .exit |
||
717 | |||
718 | mov eax, [pdir] |
||
719 | and eax, 0xFFFFF000 |
||
720 | |||
536 | diamond | 721 | stdcall map_page,[ipc_pdir],eax,PG_UW |
164 | serge | 722 | mov ebx, [ofs] |
723 | shr ebx, 22 |
||
724 | mov esi, [ipc_pdir] |
||
725 | mov edi, [ipc_ptab] |
||
726 | mov eax, [esi+ebx*4] |
||
727 | and eax, 0xFFFFF000 |
||
728 | jz .exit |
||
536 | diamond | 729 | stdcall map_page,edi,eax,PG_UW |
164 | serge | 730 | ; inc ebx |
731 | ; add edi, 0x1000 |
||
732 | ; mov eax, [esi+ebx*4] |
||
733 | ; test eax, eax |
||
734 | ; jz @f |
||
735 | ; and eax, 0xFFFFF000 |
||
736 | ; stdcall map_page, edi, eax |
||
737 | |||
738 | @@: mov edi, [lin_addr] |
||
739 | and edi, 0xFFFFF000 |
||
740 | mov ecx, [buf_size] |
||
741 | add ecx, 4095 |
||
742 | shr ecx, 12 |
||
743 | inc ecx |
||
744 | |||
745 | mov edx, [ofs] |
||
746 | shr edx, 12 |
||
747 | and edx, 0x3FF |
||
748 | mov esi, [ipc_ptab] |
||
749 | |||
750 | .map: mov eax, [esi+edx*4] |
||
751 | and eax, 0xFFFFF000 |
||
536 | diamond | 752 | jz .exit |
753 | stdcall map_page,edi,eax,PG_UW |
||
754 | dec ecx |
||
755 | jz .exit |
||
164 | serge | 756 | add edi, 0x1000 |
757 | inc edx |
||
536 | diamond | 758 | cmp edx, 0x400 |
164 | serge | 759 | jnz .map |
536 | diamond | 760 | inc ebx |
761 | mov eax, [ipc_pdir] |
||
762 | mov eax, [eax+ebx*4] |
||
763 | and eax, 0xFFFFF000 |
||
764 | jz .exit |
||
765 | stdcall map_page,esi,eax,PG_UW |
||
766 | xor edx, edx |
||
767 | jmp .map |
||
164 | serge | 768 | |
769 | .exit: |
||
770 | ret |
||
771 | endp |
||
772 | |||
773 | align 4 |
||
774 | proc map_memEx stdcall, lin_addr:dword,pdir:dword,\ |
||
775 | ofs:dword,buf_size:dword |
||
776 | mov eax, [buf_size] |
||
777 | test eax, eax |
||
778 | jz .exit |
||
779 | |||
780 | mov eax, [pdir] |
||
781 | and eax, 0xFFFFF000 |
||
782 | |||
783 | stdcall map_page,[proc_mem_pdir],eax,dword PG_UW |
||
784 | mov ebx, [ofs] |
||
785 | shr ebx, 22 |
||
786 | mov esi, [proc_mem_pdir] |
||
787 | mov edi, [proc_mem_tab] |
||
788 | mov eax, [esi+ebx*4] |
||
789 | and eax, 0xFFFFF000 |
||
790 | test eax, eax |
||
791 | jz .exit |
||
792 | stdcall map_page,edi,eax,dword PG_UW |
||
793 | |||
794 | @@: mov edi, [lin_addr] |
||
795 | and edi, 0xFFFFF000 |
||
796 | mov ecx, [buf_size] |
||
797 | add ecx, 4095 |
||
798 | shr ecx, 12 |
||
799 | inc ecx |
||
800 | |||
801 | mov edx, [ofs] |
||
802 | shr edx, 12 |
||
803 | and edx, 0x3FF |
||
804 | mov esi, [proc_mem_tab] |
||
805 | |||
806 | .map: mov eax, [esi+edx*4] |
||
807 | ; and eax, 0xFFFFF000 |
||
808 | ; test eax, eax |
||
809 | ; jz .exit |
||
810 | stdcall map_page,edi,eax,dword PG_UW |
||
811 | add edi, 0x1000 |
||
812 | inc edx |
||
813 | dec ecx |
||
814 | jnz .map |
||
815 | .exit: |
||
816 | ret |
||
817 | endp |
||
818 | |||
819 | |||
820 | |||
821 | |||
822 | sys_IPC: |
||
823 | ;input: |
||
824 | ; eax=1 - set ipc buffer area |
||
825 | ; ebx=address of buffer |
||
826 | ; ecx=size of buffer |
||
827 | ; eax=2 - send message |
||
828 | ; ebx=PID |
||
829 | ; ecx=address of message |
||
830 | ; edx=size of message |
||
831 | |||
832 | cmp eax,1 |
||
833 | jne @f |
||
834 | call set_ipc_buff |
||
835 | mov [esp+36], eax |
||
836 | ret |
||
837 | @@: |
||
838 | cmp eax, 2 |
||
839 | jne @f |
||
840 | stdcall sys_ipc_send, ebx, ecx, edx |
||
841 | mov [esp+36], eax |
||
842 | ret |
||
843 | @@: |
||
844 | xor eax, eax |
||
845 | not eax |
||
846 | mov [esp+36], eax |
||
847 | ret |
||
848 | |||
849 | align 4 |
||
850 | proc set_ipc_buff |
||
851 | |||
465 | serge | 852 | mov eax,[current_slot] |
164 | serge | 853 | pushf |
854 | cli |
||
465 | serge | 855 | mov [eax+APPDATA.ipc_start],ebx ;set fields in extended information area |
856 | mov [eax+APPDATA.ipc_size],ecx |
||
164 | serge | 857 | |
858 | add ecx, ebx |
||
859 | add ecx, 4095 |
||
860 | and ecx, not 4095 |
||
861 | |||
862 | .touch: mov eax, [ebx] |
||
863 | add ebx, 0x1000 |
||
864 | cmp ebx, ecx |
||
536 | diamond | 865 | jb .touch |
164 | serge | 866 | |
867 | popf |
||
868 | xor eax, eax |
||
869 | ret |
||
870 | endp |
||
871 | |||
872 | proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword |
||
873 | locals |
||
874 | dst_slot dd ? |
||
875 | dst_offset dd ? |
||
876 | buf_size dd ? |
||
536 | diamond | 877 | used_buf dd ? |
164 | serge | 878 | endl |
879 | |||
880 | pushf |
||
881 | cli |
||
882 | |||
883 | mov eax, [PID] |
||
884 | call pid_to_slot |
||
885 | test eax,eax |
||
886 | jz .no_pid |
||
887 | |||
888 | mov [dst_slot], eax |
||
889 | shl eax,8 |
||
380 | serge | 890 | mov edi,[eax+SLOT_BASE+0xa0] ;is ipc area defined? |
164 | serge | 891 | test edi,edi |
892 | jz .no_ipc_area |
||
893 | |||
894 | mov ebx, edi |
||
895 | and ebx, 0xFFF |
||
896 | mov [dst_offset], ebx |
||
897 | |||
380 | serge | 898 | mov esi, [eax+SLOT_BASE+0xa4] |
164 | serge | 899 | mov [buf_size], esi |
900 | |||
536 | diamond | 901 | mov ecx, [ipc_tmp] |
902 | cmp esi, 0x40000-0x1000 ; size of [ipc_tmp] minus one page |
||
903 | jbe @f |
||
904 | push eax esi edi |
||
905 | add esi,0x1000 |
||
906 | stdcall alloc_kernel_space,esi |
||
907 | mov ecx, eax |
||
908 | pop edi esi eax |
||
909 | @@: |
||
910 | mov [used_buf], ecx |
||
911 | stdcall map_mem, ecx, [SLOT_BASE+eax+0xB8],\ |
||
164 | serge | 912 | edi, esi |
913 | |||
914 | mov edi, [dst_offset] |
||
536 | diamond | 915 | add edi, [used_buf] |
164 | serge | 916 | cmp dword [edi], 0 |
917 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
||
227 | serge | 918 | |
566 | serge | 919 | mov edx, dword [edi+4] |
920 | lea ebx, [edx+8] |
||
164 | serge | 921 | add ebx, [msg_size] |
922 | cmp ebx, [buf_size] |
||
923 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
||
227 | serge | 924 | |
164 | serge | 925 | mov dword [edi+4], ebx |
926 | mov eax,[TASK_BASE] |
||
927 | mov eax, [eax+0x04] ;eax - our PID |
||
928 | add edi, edx |
||
929 | mov [edi], eax |
||
930 | mov ecx, [msg_size] |
||
931 | |||
932 | mov [edi+4], ecx |
||
933 | add edi, 8 |
||
934 | mov esi, [msg_addr] |
||
465 | serge | 935 | ; add esi, new_app_base |
164 | serge | 936 | cld |
937 | rep movsb |
||
938 | |||
939 | mov ebx, [ipc_tmp] |
||
940 | mov edx, ebx |
||
941 | shr ebx, 12 |
||
942 | xor eax, eax |
||
365 | serge | 943 | mov [page_tabs+ebx*4], eax |
164 | serge | 944 | invlpg [edx] |
945 | |||
946 | mov ebx, [ipc_pdir] |
||
947 | mov edx, ebx |
||
948 | shr ebx, 12 |
||
949 | xor eax, eax |
||
365 | serge | 950 | mov [page_tabs+ebx*4], eax |
164 | serge | 951 | invlpg [edx] |
952 | |||
953 | mov ebx, [ipc_ptab] |
||
954 | mov edx, ebx |
||
955 | shr ebx, 12 |
||
956 | xor eax, eax |
||
365 | serge | 957 | mov [page_tabs+ebx*4], eax |
164 | serge | 958 | invlpg [edx] |
959 | |||
960 | mov eax, [dst_slot] |
||
961 | shl eax, 8 |
||
380 | serge | 962 | or [eax+SLOT_BASE+0xA8],dword 0x40 |
164 | serge | 963 | cmp dword [check_idle_semaphore],20 |
964 | jge .ipc_no_cis |
||
965 | |||
966 | mov dword [check_idle_semaphore],5 |
||
967 | .ipc_no_cis: |
||
536 | diamond | 968 | push 0 |
969 | jmp .ret |
||
164 | serge | 970 | .no_pid: |
971 | popf |
||
536 | diamond | 972 | mov eax, 4 |
164 | serge | 973 | ret |
974 | .no_ipc_area: |
||
975 | popf |
||
976 | xor eax, eax |
||
977 | inc eax |
||
978 | ret |
||
979 | .ipc_blocked: |
||
536 | diamond | 980 | push 2 |
981 | jmp .ret |
||
164 | serge | 982 | .buffer_overflow: |
536 | diamond | 983 | push 3 |
984 | .ret: |
||
985 | mov eax, [used_buf] |
||
986 | cmp eax, [ipc_tmp] |
||
987 | jz @f |
||
988 | stdcall free_kernel_space,eax |
||
989 | @@: |
||
990 | pop eax |
||
164 | serge | 991 | popf |
992 | ret |
||
993 | endp |
||
994 | |||
995 | align 4 |
||
170 | serge | 996 | sysfn_meminfo: |
164 | serge | 997 | |
1072 | diamond | 998 | ; add ecx, new_app_base |
999 | cmp ecx, OS_BASE |
||
465 | serge | 1000 | jae .fail |
172 | serge | 1001 | |
164 | serge | 1002 | mov eax, [pg_data.pages_count] |
1072 | diamond | 1003 | mov [ecx], eax |
172 | serge | 1004 | shl eax, 12 |
1072 | diamond | 1005 | mov [esp+32], eax |
1006 | mov eax, [pg_data.pages_free] |
||
1007 | mov [ecx+4], eax |
||
1008 | mov eax, [pg_data.pages_faults] |
||
1009 | mov [ecx+8], eax |
||
1010 | mov eax, [heap_size] |
||
1011 | mov [ecx+12], eax |
||
1012 | mov eax, [heap_free] |
||
1013 | mov [ecx+16], eax |
||
170 | serge | 1014 | mov eax, [heap_blocks] |
1072 | diamond | 1015 | mov [ecx+20], eax |
1016 | mov eax, [free_blocks] |
||
1017 | mov [ecx+24], eax |
||
164 | serge | 1018 | ret |
172 | serge | 1019 | .fail: |
1276 | Lrz | 1020 | or dword [esp+32], -1 |
172 | serge | 1021 | ret |
1276 | Lrz | 1022 | iglobal |
164 | serge | 1023 | align 4 |
940 | serge | 1024 | f68call: |
1275 | serge | 1025 | dd f68.11 ; init_heap |
1026 | dd f68.12 ; user_alloc |
||
1027 | dd f68.13 ; user_free |
||
1028 | dd f68.14 ; get_event_ex |
||
1077 | Galkov | 1029 | dd f68.fail ;moved to f68.24 |
1275 | serge | 1030 | dd f68.16 ; get_service |
1031 | dd f68.17 ; call_service |
||
1077 | Galkov | 1032 | dd f68.fail ;moved to f68.25 |
1275 | serge | 1033 | dd f68.19 ; load_dll |
1034 | dd f68.20 ; user_realloc |
||
1035 | dd f68.21 ; load_driver |
||
1036 | dd f68.22 ; shmem_open |
||
1037 | dd f68.23 ; shmem_close |
||
1077 | Galkov | 1038 | dd f68.24 |
1039 | dd f68.25 |
||
1276 | Lrz | 1040 | endg |
940 | serge | 1041 | align 4 |
1042 | f68: |
||
164 | serge | 1043 | cmp eax,4 |
1044 | jle sys_sheduler |
||
1045 | |||
170 | serge | 1046 | cmp eax, 11 |
164 | serge | 1047 | jb .fail |
1048 | |||
1077 | Galkov | 1049 | cmp eax, 25 |
940 | serge | 1050 | ja .fail |
1051 | |||
1052 | jmp dword [f68call+eax*4-11*4] |
||
1053 | .11: |
||
188 | serge | 1054 | call init_heap |
164 | serge | 1055 | mov [esp+36], eax |
1056 | ret |
||
940 | serge | 1057 | .12: |
164 | serge | 1058 | stdcall user_alloc, ebx |
1059 | mov [esp+36], eax |
||
1060 | ret |
||
940 | serge | 1061 | .13: |
164 | serge | 1062 | stdcall user_free, ebx |
1063 | mov [esp+36], eax |
||
1064 | ret |
||
940 | serge | 1065 | .14: |
465 | serge | 1066 | cmp ebx, OS_BASE |
1067 | jae .fail |
||
1055 | Galkov | 1068 | mov edi,ebx |
1069 | call get_event_ex |
||
227 | serge | 1070 | mov [esp+36], eax |
164 | serge | 1071 | ret |
940 | serge | 1072 | .16: |
188 | serge | 1073 | test ebx, ebx |
1074 | jz .fail |
||
465 | serge | 1075 | cmp ebx, OS_BASE |
1076 | jae .fail |
||
164 | serge | 1077 | stdcall get_service, ebx |
1078 | mov [esp+36], eax |
||
1079 | ret |
||
940 | serge | 1080 | .17: |
378 | serge | 1081 | call srv_handlerEx ;ebx |
164 | serge | 1082 | mov [esp+36], eax |
1083 | ret |
||
940 | serge | 1084 | .19: |
465 | serge | 1085 | cmp ebx, OS_BASE |
1086 | jae .fail |
||
198 | serge | 1087 | stdcall load_library, ebx |
1088 | mov [esp+36], eax |
||
1089 | ret |
||
940 | serge | 1090 | .20: |
490 | serge | 1091 | mov eax, ecx |
1092 | call user_realloc |
||
1093 | mov [esp+36], eax |
||
1094 | ret |
||
940 | serge | 1095 | .21: |
740 | serge | 1096 | cmp ebx, OS_BASE |
1097 | jae .fail |
||
1098 | |||
1099 | stdcall load_PE, ebx |
||
1100 | |||
1101 | test eax, eax |
||
1102 | jz @F |
||
1103 | |||
1104 | mov esi, eax |
||
1105 | stdcall eax, DRV_ENTRY |
||
1106 | |||
1107 | test eax, eax |
||
1108 | jz @F |
||
1109 | |||
1110 | mov [eax+SRV.entry], esi |
||
1111 | |||
1112 | @@: |
||
1113 | mov [esp+36], eax |
||
1114 | ret |
||
940 | serge | 1115 | .22: |
1116 | cmp ebx, OS_BASE |
||
1117 | jae .fail |
||
740 | serge | 1118 | |
940 | serge | 1119 | stdcall shmem_open, ebx, ecx, edx |
1120 | mov [esp+28], edx |
||
1121 | mov [esp+36], eax |
||
1122 | ret |
||
740 | serge | 1123 | |
943 | serge | 1124 | .23: |
1125 | cmp ebx, OS_BASE |
||
1126 | jae .fail |
||
1127 | |||
1128 | stdcall shmem_close, ebx |
||
1129 | mov [esp+36], eax |
||
1130 | ret |
||
1275 | serge | 1131 | .24: |
1132 | mov eax, [current_slot] |
||
1133 | xchg ebx, [eax+APPDATA.exc_handler] |
||
1134 | xchg ecx, [eax+APPDATA.except_mask] |
||
1135 | mov [esp+36], ebx ; reg_eax+8 |
||
1136 | mov [esp+24], ecx ; reg_ebx+8 |
||
1137 | ret |
||
1138 | .25: |
||
1139 | cmp ebx,32 |
||
1140 | jae .fail |
||
1141 | mov eax, [current_slot] |
||
1142 | btr [eax+APPDATA.except_mask],ebx |
||
1143 | setc byte[esp+36] |
||
1144 | jecxz @f |
||
1145 | bts [eax+APPDATA.except_mask],ebx |
||
1146 | @@: |
||
1147 | ret |
||
943 | serge | 1148 | |
164 | serge | 1149 | .fail: |
1150 | xor eax, eax |
||
1151 | mov [esp+36], eax |
||
1152 | ret |
||
1153 | |||
1154 | align 4 |
||
819 | serge | 1155 | proc load_pe_driver stdcall, file:dword |
1156 | |||
1157 | stdcall load_PE, [file] |
||
1158 | test eax, eax |
||
1159 | jz .fail |
||
1160 | |||
1161 | mov esi, eax |
||
1162 | stdcall eax, DRV_ENTRY |
||
1163 | test eax, eax |
||
1164 | jz .fail |
||
1165 | |||
1166 | mov [eax+SRV.entry], esi |
||
1167 | ret |
||
1168 | |||
1169 | .fail: |
||
1170 | xor eax, eax |
||
1171 | ret |
||
1172 | endp |
||
1173 | |||
1174 | |||
1175 | align 4 |
||
164 | serge | 1176 | proc init_mtrr |
1177 | |||
412 | serge | 1178 | cmp [BOOT_VAR+0x901c],byte 2 |
164 | serge | 1179 | je .exit |
1180 | |||
211 | serge | 1181 | bt [cpu_caps], CAPS_MTRR |
1182 | jnc .exit |
||
1183 | |||
164 | serge | 1184 | mov eax, cr0 |
1185 | or eax, 0x60000000 ;disable caching |
||
1186 | mov cr0, eax |
||
1187 | wbinvd ;invalidate cache |
||
1188 | |||
1189 | mov ecx, 0x2FF |
||
1190 | rdmsr ; |
||
1030 | diamond | 1191 | ; has BIOS already initialized MTRRs? |
1192 | test ah, 8 |
||
1193 | jnz .skip_init |
||
1194 | ; rarely needed, so mainly placeholder |
||
1195 | ; main memory - cached |
||
164 | serge | 1196 | push eax |
1197 | |||
821 | diamond | 1198 | mov eax, [MEM_AMOUNT] |
1199 | ; round eax up to next power of 2 |
||
1200 | dec eax |
||
1201 | bsr ecx, eax |
||
1030 | diamond | 1202 | mov ebx, 2 |
1203 | shl ebx, cl |
||
1204 | dec ebx |
||
1205 | ; base of memory range = 0, type of memory range = MEM_WB |
||
164 | serge | 1206 | xor edx, edx |
1030 | diamond | 1207 | mov eax, MEM_WB |
1208 | mov ecx, 0x200 |
||
1209 | wrmsr |
||
1210 | ; mask of memory range = 0xFFFFFFFFF - (size - 1), ebx = size - 1 |
||
1211 | mov eax, 0xFFFFFFFF |
||
1212 | mov edx, 0x0000000F |
||
1213 | sub eax, ebx |
||
1214 | sbb edx, 0 |
||
1215 | or eax, 0x800 |
||
1216 | inc ecx |
||
1217 | wrmsr |
||
1218 | ; clear unused MTRRs |
||
164 | serge | 1219 | xor eax, eax |
1030 | diamond | 1220 | xor edx, edx |
164 | serge | 1221 | @@: |
1030 | diamond | 1222 | wrmsr |
164 | serge | 1223 | inc ecx |
1030 | diamond | 1224 | cmp ecx, 0x210 |
1225 | jb @b |
||
1226 | ; enable MTRRs |
||
1227 | pop eax |
||
1228 | or ah, 8 |
||
1229 | and al, 0xF0 ; default memtype = UC |
||
1230 | mov ecx, 0x2FF |
||
164 | serge | 1231 | wrmsr |
1030 | diamond | 1232 | .skip_init: |
1233 | stdcall set_mtrr, [LFBAddress],[LFBSize],MEM_WC |
||
164 | serge | 1234 | |
1235 | wbinvd ;again invalidate |
||
1236 | |||
1237 | mov eax, cr0 |
||
1238 | and eax, not 0x60000000 |
||
1239 | mov cr0, eax ; enable caching |
||
1240 | .exit: |
||
1241 | ret |
||
1242 | endp |
||
1243 | |||
1244 | align 4 |
||
1030 | diamond | 1245 | proc set_mtrr stdcall, base:dword,size:dword,mem_type:dword |
1246 | ; find unused register |
||
1247 | mov ecx, 0x201 |
||
1248 | @@: |
||
1249 | rdmsr |
||
1250 | dec ecx |
||
1251 | test ah, 8 |
||
1252 | jz .found |
||
1253 | rdmsr |
||
1254 | mov al, 0 ; clear memory type field |
||
1255 | cmp eax, [base] |
||
1256 | jz .ret |
||
1257 | add ecx, 3 |
||
1258 | cmp ecx, 0x210 |
||
1259 | jb @b |
||
1260 | ; no free registers, ignore the call |
||
1261 | .ret: |
||
1262 | ret |
||
1263 | .found: |
||
1264 | ; found, write values |
||
164 | serge | 1265 | xor edx, edx |
1266 | mov eax, [base] |
||
1267 | or eax, [mem_type] |
||
1268 | wrmsr |
||
1269 | |||
1270 | mov ebx, [size] |
||
1271 | dec ebx |
||
1272 | mov eax, 0xFFFFFFFF |
||
1273 | mov edx, 0x0000000F |
||
1274 | sub eax, ebx |
||
1275 | sbb edx, 0 |
||
1276 | or eax, 0x800 |
||
1277 | inc ecx |
||
1278 | wrmsr |
||
1279 | ret |
||
1280 | endp |
||
1281 | |||
465 | serge | 1282 | align 4 |
172 | serge | 1283 | proc stall stdcall, delay:dword |
1284 | push ecx |
||
1285 | push edx |
||
1286 | push ebx |
||
1287 | push eax |
||
1288 | |||
1289 | mov eax, [delay] |
||
1290 | mul [stall_mcs] |
||
1291 | mov ebx, eax ;low |
||
1292 | mov ecx, edx ;high |
||
1293 | rdtsc |
||
1294 | add ebx, eax |
||
1295 | adc ecx,edx |
||
1296 | @@: |
||
1297 | rdtsc |
||
1298 | sub eax, ebx |
||
1299 | sbb edx, ecx |
||
1300 | jb @B |
||
1301 | |||
1302 | pop eax |
||
1303 | pop ebx |
||
1304 | pop edx |
||
1305 | pop ecx |
||
1306 | ret |
||
1307 | endp |
||
1308 | |||
520 | serge | 1309 | align 4 |
1310 | proc create_ring_buffer stdcall, size:dword, flags:dword |
||
1311 | locals |
||
1312 | buf_ptr dd ? |
||
1313 | endl |
||
237 | serge | 1314 | |
520 | serge | 1315 | mov eax, [size] |
1316 | test eax, eax |
||
1317 | jz .fail |
||
1318 | |||
1319 | add eax, eax |
||
1320 | stdcall alloc_kernel_space, eax |
||
1321 | test eax, eax |
||
1322 | jz .fail |
||
1323 | |||
662 | serge | 1324 | push ebx |
1325 | |||
520 | serge | 1326 | mov [buf_ptr], eax |
1327 | |||
1328 | mov ebx, [size] |
||
1329 | shr ebx, 12 |
||
1330 | push ebx |
||
1331 | |||
1332 | stdcall alloc_pages, ebx |
||
1333 | pop ecx |
||
1334 | |||
1335 | test eax, eax |
||
1336 | jz .mm_fail |
||
1337 | |||
662 | serge | 1338 | push edi |
1339 | |||
520 | serge | 1340 | or eax, [flags] |
1341 | mov edi, [buf_ptr] |
||
1342 | mov ebx, [buf_ptr] |
||
1343 | mov edx, ecx |
||
566 | serge | 1344 | shl edx, 2 |
520 | serge | 1345 | shr edi, 10 |
1346 | @@: |
||
1347 | mov [page_tabs+edi], eax |
||
1348 | mov [page_tabs+edi+edx], eax |
||
924 | serge | 1349 | invlpg [ebx] |
1350 | invlpg [ebx+0x10000] |
||
520 | serge | 1351 | add eax, 0x1000 |
1352 | add ebx, 0x1000 |
||
566 | serge | 1353 | add edi, 4 |
520 | serge | 1354 | dec ecx |
1355 | jnz @B |
||
1356 | |||
1357 | mov eax, [buf_ptr] |
||
662 | serge | 1358 | pop edi |
1359 | pop ebx |
||
520 | serge | 1360 | ret |
1361 | .mm_fail: |
||
1362 | stdcall free_kernel_space, [buf_ptr] |
||
1363 | xor eax, eax |
||
662 | serge | 1364 | pop ebx |
520 | serge | 1365 | .fail: |
1366 | ret |
||
1367 | endp0>> |