Rev 6252 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
||
5565 | serge | 3 | ;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;; |
431 | serge | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
||
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
||
164 | serge | 7 | |
593 | mikedld | 8 | $Revision: 6317 $ |
9 | |||
10 | |||
164 | serge | 11 | align 4 |
12 | proc alloc_page |
||
13 | |||
2434 | Serge | 14 | pushfd |
15 | cli |
||
16 | push ebx |
||
1461 | diamond | 17 | ;//- |
2434 | Serge | 18 | cmp [pg_data.pages_free], 1 |
19 | jle .out_of_memory |
||
1461 | diamond | 20 | ;//- |
21 | |||
2434 | Serge | 22 | mov ebx, [page_start] |
23 | mov ecx, [page_end] |
||
164 | serge | 24 | .l1: |
2434 | Serge | 25 | bsf eax, [ebx]; |
26 | jnz .found |
||
27 | add ebx, 4 |
||
28 | cmp ebx, ecx |
||
29 | jb .l1 |
||
30 | pop ebx |
||
31 | popfd |
||
32 | xor eax, eax |
||
33 | ret |
||
164 | serge | 34 | .found: |
1629 | serge | 35 | ;//- |
2434 | Serge | 36 | dec [pg_data.pages_free] |
37 | jz .out_of_memory |
||
1461 | diamond | 38 | ;//- |
2434 | Serge | 39 | btr [ebx], eax |
40 | mov [page_start], ebx |
||
41 | sub ebx, sys_pgmap |
||
42 | lea eax, [eax+ebx*8] |
||
43 | shl eax, 12 |
||
1461 | diamond | 44 | ;//- dec [pg_data.pages_free] |
2434 | Serge | 45 | pop ebx |
46 | popfd |
||
47 | ret |
||
1461 | diamond | 48 | ;//- |
49 | .out_of_memory: |
||
2434 | Serge | 50 | mov [pg_data.pages_free], 1 |
51 | xor eax, eax |
||
52 | pop ebx |
||
53 | popfd |
||
54 | ret |
||
1461 | diamond | 55 | ;//- |
164 | serge | 56 | endp |
57 | |||
58 | align 4 |
||
59 | proc alloc_pages stdcall, count:dword |
||
2434 | Serge | 60 | pushfd |
61 | push ebx |
||
62 | push edi |
||
63 | cli |
||
64 | mov eax, [count] |
||
65 | add eax, 7 |
||
66 | shr eax, 3 |
||
67 | mov [count], eax |
||
1461 | diamond | 68 | ;//- |
2434 | Serge | 69 | mov ebx, [pg_data.pages_free] |
70 | sub ebx, 9 |
||
71 | js .out_of_memory |
||
72 | shr ebx, 3 |
||
73 | cmp eax, ebx |
||
74 | jg .out_of_memory |
||
1461 | diamond | 75 | ;//- |
2434 | Serge | 76 | mov ecx, [page_start] |
77 | mov ebx, [page_end] |
||
164 | serge | 78 | .find: |
2434 | Serge | 79 | mov edx, [count] |
80 | mov edi, ecx |
||
164 | serge | 81 | .match: |
2434 | Serge | 82 | cmp byte [ecx], 0xFF |
83 | jne .next |
||
84 | dec edx |
||
85 | jz .ok |
||
86 | inc ecx |
||
87 | cmp ecx, ebx |
||
88 | jb .match |
||
1461 | diamond | 89 | .out_of_memory: |
660 | serge | 90 | .fail: |
2434 | Serge | 91 | xor eax, eax |
92 | pop edi |
||
93 | pop ebx |
||
94 | popfd |
||
95 | ret |
||
164 | serge | 96 | .next: |
2434 | Serge | 97 | inc ecx |
98 | cmp ecx, ebx |
||
99 | jb .find |
||
100 | pop edi |
||
101 | pop ebx |
||
102 | popfd |
||
103 | xor eax, eax |
||
104 | ret |
||
164 | serge | 105 | .ok: |
2434 | Serge | 106 | sub ecx, edi |
107 | inc ecx |
||
108 | push esi |
||
109 | mov esi, edi |
||
110 | xor eax, eax |
||
111 | rep stosb |
||
112 | sub esi, sys_pgmap |
||
113 | shl esi, 3+12 |
||
114 | mov eax, esi |
||
115 | mov ebx, [count] |
||
116 | shl ebx, 3 |
||
117 | sub [pg_data.pages_free], ebx |
||
118 | pop esi |
||
119 | pop edi |
||
120 | pop ebx |
||
121 | popfd |
||
122 | ret |
||
164 | serge | 123 | endp |
124 | |||
125 | align 4 |
||
5201 | serge | 126 | ;proc map_page stdcall,lin_addr:dword,phis_addr:dword,flags:dword |
127 | map_page: |
||
2434 | Serge | 128 | push ebx |
5596 | serge | 129 | mov eax, [esp+12] ; phis_addr |
5201 | serge | 130 | or eax, [esp+16] ; flags |
5565 | serge | 131 | and eax, [pte_valid_mask] |
5201 | serge | 132 | mov ebx, [esp+8] ; lin_addr |
2434 | Serge | 133 | shr ebx, 12 |
134 | mov [page_tabs+ebx*4], eax |
||
5201 | serge | 135 | mov eax, [esp+8] ; lin_addr |
136 | pop ebx |
||
2434 | Serge | 137 | invlpg [eax] |
5201 | serge | 138 | ret 12 |
164 | serge | 139 | |
140 | align 4 |
||
281 | serge | 141 | map_space: ;not implemented |
142 | |||
143 | |||
2434 | Serge | 144 | ret |
281 | serge | 145 | |
146 | |||
147 | align 4 |
||
164 | serge | 148 | proc free_page |
149 | ;arg: eax page address |
||
2434 | Serge | 150 | pushfd |
151 | cli |
||
152 | shr eax, 12 ;page index |
||
153 | bts dword [sys_pgmap], eax ;that's all! |
||
154 | cmc |
||
155 | adc [pg_data.pages_free], 0 |
||
156 | shr eax, 3 |
||
157 | and eax, not 3 ;dword offset from page_map |
||
158 | add eax, sys_pgmap |
||
159 | cmp [page_start], eax |
||
160 | ja @f |
||
161 | popfd |
||
162 | ret |
||
164 | serge | 163 | @@: |
2434 | Serge | 164 | mov [page_start], eax |
165 | popfd |
||
166 | ret |
||
164 | serge | 167 | endp |
168 | |||
2434 | Serge | 169 | align 4 |
741 | serge | 170 | proc map_io_mem stdcall, base:dword, size:dword, flags:dword |
171 | |||
2434 | Serge | 172 | push ebx |
173 | push edi |
||
174 | mov eax, [size] |
||
175 | add eax, [base] |
||
176 | add eax, 4095 |
||
177 | and eax, -4096 |
||
178 | mov ecx, [base] |
||
179 | and ecx, -4096 |
||
180 | sub eax, ecx |
||
181 | mov [size], eax |
||
2217 | Serge | 182 | |
2434 | Serge | 183 | stdcall alloc_kernel_space, eax |
184 | test eax, eax |
||
185 | jz .fail |
||
186 | push eax |
||
741 | serge | 187 | |
2434 | Serge | 188 | mov edi, 0x1000 |
189 | mov ebx, eax |
||
190 | mov ecx, [size] |
||
191 | mov edx, [base] |
||
192 | shr eax, 12 |
||
193 | shr ecx, 12 |
||
194 | or edx, [flags] |
||
5565 | serge | 195 | and edx, [pte_valid_mask] |
741 | serge | 196 | @@: |
2434 | Serge | 197 | mov [page_tabs+eax*4], edx |
198 | invlpg [ebx] |
||
199 | inc eax |
||
200 | add ebx, edi |
||
201 | add edx, edi |
||
202 | loop @B |
||
741 | serge | 203 | |
2434 | Serge | 204 | pop eax |
205 | mov edx, [base] |
||
206 | and edx, 4095 |
||
207 | add eax, edx |
||
741 | serge | 208 | .fail: |
2434 | Serge | 209 | pop edi |
210 | pop ebx |
||
211 | ret |
||
741 | serge | 212 | endp |
213 | |||
279 | serge | 214 | ; param |
328 | serge | 215 | ; eax= page base + page flags |
819 | serge | 216 | ; ebx= linear address |
281 | serge | 217 | ; ecx= count |
218 | |||
219 | align 4 |
||
328 | serge | 220 | commit_pages: |
2434 | Serge | 221 | test ecx, ecx |
222 | jz .fail |
||
281 | serge | 223 | |
2434 | Serge | 224 | push edi |
225 | push eax |
||
226 | push ecx |
||
227 | mov ecx, pg_data.mutex |
||
228 | call mutex_lock |
||
229 | pop ecx |
||
230 | pop eax |
||
2130 | serge | 231 | |
5565 | serge | 232 | and eax, [pte_valid_mask ] |
2434 | Serge | 233 | mov edi, ebx |
234 | shr edi, 12 |
||
235 | lea edi, [page_tabs+edi*4] |
||
2130 | serge | 236 | @@: |
2434 | Serge | 237 | stosd |
238 | invlpg [ebx] |
||
239 | add eax, 0x1000 |
||
240 | add ebx, 0x1000 |
||
241 | loop @B |
||
328 | serge | 242 | |
2434 | Serge | 243 | pop edi |
2130 | serge | 244 | |
2434 | Serge | 245 | mov ecx, pg_data.mutex |
246 | call mutex_unlock |
||
328 | serge | 247 | .fail: |
2434 | Serge | 248 | ret |
281 | serge | 249 | |
328 | serge | 250 | |
281 | serge | 251 | ; param |
279 | serge | 252 | ; eax= base |
281 | serge | 253 | ; ecx= count |
279 | serge | 254 | |
164 | serge | 255 | align 4 |
279 | serge | 256 | release_pages: |
321 | diamond | 257 | |
2434 | Serge | 258 | push ebp |
259 | push esi |
||
260 | push edi |
||
261 | push ebx |
||
279 | serge | 262 | |
2434 | Serge | 263 | mov esi, eax |
264 | mov edi, eax |
||
279 | serge | 265 | |
2434 | Serge | 266 | shr esi, 12 |
267 | lea esi, [page_tabs+esi*4] |
||
328 | serge | 268 | |
2434 | Serge | 269 | push ecx |
270 | mov ecx, pg_data.mutex |
||
271 | call mutex_lock |
||
272 | pop ecx |
||
2130 | serge | 273 | |
2434 | Serge | 274 | mov ebp, [pg_data.pages_free] |
275 | mov ebx, [page_start] |
||
276 | mov edx, sys_pgmap |
||
279 | serge | 277 | @@: |
2434 | Serge | 278 | xor eax, eax |
279 | xchg eax, [esi] |
||
280 | invlpg [edi] |
||
279 | serge | 281 | |
2434 | Serge | 282 | test eax, 1 |
283 | jz .next |
||
279 | serge | 284 | |
2434 | Serge | 285 | shr eax, 12 |
286 | bts [edx], eax |
||
287 | cmc |
||
288 | adc ebp, 0 |
||
289 | shr eax, 3 |
||
290 | and eax, -4 |
||
291 | add eax, edx |
||
292 | cmp eax, ebx |
||
293 | jae .next |
||
279 | serge | 294 | |
2434 | Serge | 295 | mov ebx, eax |
279 | serge | 296 | .next: |
2434 | Serge | 297 | add edi, 0x1000 |
298 | add esi, 4 |
||
299 | loop @B |
||
2130 | serge | 300 | |
2434 | Serge | 301 | mov [pg_data.pages_free], ebp |
302 | mov ecx, pg_data.mutex |
||
303 | call mutex_unlock |
||
2130 | serge | 304 | |
2434 | Serge | 305 | pop ebx |
306 | pop edi |
||
307 | pop esi |
||
308 | pop ebp |
||
309 | ret |
||
279 | serge | 310 | |
819 | serge | 311 | ; param |
312 | ; eax= base |
||
313 | ; ecx= count |
||
314 | |||
279 | serge | 315 | align 4 |
819 | serge | 316 | unmap_pages: |
317 | |||
2434 | Serge | 318 | push edi |
819 | serge | 319 | |
2434 | Serge | 320 | mov edi, eax |
321 | mov edx, eax |
||
819 | serge | 322 | |
2434 | Serge | 323 | shr edi, 10 |
324 | add edi, page_tabs |
||
819 | serge | 325 | |
2434 | Serge | 326 | xor eax, eax |
819 | serge | 327 | @@: |
2434 | Serge | 328 | stosd |
329 | invlpg [edx] |
||
330 | add edx, 0x1000 |
||
331 | loop @b |
||
819 | serge | 332 | |
2434 | Serge | 333 | pop edi |
334 | ret |
||
819 | serge | 335 | |
336 | |||
337 | align 4 |
||
188 | serge | 338 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
2434 | Serge | 339 | push ebx |
340 | mov ebx, [lin_addr] |
||
341 | shr ebx, 22 |
||
342 | mov eax, [phis_addr] |
||
343 | and eax, not 0xFFF |
||
5565 | serge | 344 | or eax, PG_UWR |
2434 | Serge | 345 | mov dword [master_tab+ebx*4], eax |
346 | mov eax, [lin_addr] |
||
347 | shr eax, 10 |
||
348 | add eax, page_tabs |
||
349 | invlpg [eax] |
||
350 | pop ebx |
||
351 | ret |
||
164 | serge | 352 | endp |
353 | |||
5201 | serge | 354 | uglobal |
355 | sb16_buffer_allocated db 0 |
||
356 | endg |
||
357 | |||
358 | ; Allocates [.size] bytes so that the target memory block |
||
359 | ; is inside one 64K page for 24-bit DMA controller, |
||
360 | ; that is, somewhere between 00xx0000h and 00xxFFFFh. |
||
361 | proc alloc_dma24 |
||
362 | ; Implementation note. |
||
363 | ; The only user of that function is SB16 driver, |
||
364 | ; so just return a statically allocated buffer. |
||
365 | virtual at esp |
||
366 | dd ? ; return address |
||
367 | .size dd ? |
||
368 | end virtual |
||
369 | cmp [sb16_buffer_allocated], 0 |
||
370 | jnz .fail |
||
371 | inc [sb16_buffer_allocated] |
||
372 | mov eax, SB16Buffer |
||
373 | ret 4 |
||
374 | .fail: |
||
375 | xor eax, eax |
||
376 | ret 4 |
||
377 | endp |
||
378 | |||
379 | ; Allocates a physical page for master page table |
||
380 | ; that duplicates first Mb of OS_BASE at address 0; |
||
381 | ; used for starting APs and for shutting down, |
||
382 | ; where it is important to execute code in trivial-mapped pages. |
||
383 | ; Returns eax = allocated physical page. |
||
384 | proc create_trampoline_pgmap |
||
385 | ; The only non-trivial moment: |
||
386 | ; we need a linear address to fill information, |
||
387 | ; but we don't need it outside of this function, |
||
388 | ; so we're returning physical address. |
||
389 | ; Therefore, allocate memory with kernel_alloc, |
||
390 | ; this will allocate physical page and a linear address somewhere, |
||
391 | ; and deallocate only linear address with free_kernel_space. |
||
392 | stdcall kernel_alloc, 0x1000 |
||
393 | mov edi, eax |
||
394 | mov esi, master_tab |
||
395 | mov ecx, 1024 |
||
396 | rep movsd |
||
397 | mov ecx, [master_tab+(OS_BASE shr 20)] |
||
398 | mov [eax], ecx |
||
399 | mov edi, eax |
||
400 | call get_pg_addr |
||
401 | push eax |
||
402 | stdcall free_kernel_space, edi |
||
403 | pop eax |
||
404 | ret |
||
405 | endp |
||
406 | |||
164 | serge | 407 | align 4 |
408 | proc new_mem_resize stdcall, new_size:dword |
||
409 | |||
2987 | Serge | 410 | push ebx |
411 | push esi |
||
412 | push edi |
||
164 | serge | 413 | |
2987 | Serge | 414 | mov edx, [current_slot] |
5201 | serge | 415 | mov ebx, [edx+APPDATA.process] |
416 | |||
417 | cmp [ebx+PROC.heap_base], 0 |
||
2987 | Serge | 418 | jne .exit |
419 | |||
2434 | Serge | 420 | mov edi, [new_size] |
421 | add edi, 4095 |
||
422 | and edi, not 4095 |
||
423 | mov [new_size], edi |
||
164 | serge | 424 | |
5201 | serge | 425 | mov esi, [ebx+PROC.mem_used] |
2434 | Serge | 426 | add esi, 4095 |
427 | and esi, not 4095 |
||
164 | serge | 428 | |
2434 | Serge | 429 | cmp edi, esi |
2987 | Serge | 430 | ja .expand |
431 | je .exit |
||
164 | serge | 432 | |
2987 | Serge | 433 | mov ebx, edi |
2434 | Serge | 434 | shr edi, 12 |
435 | shr esi, 12 |
||
2987 | Serge | 436 | |
437 | mov ecx, pg_data.mutex |
||
438 | call mutex_lock |
||
164 | serge | 439 | @@: |
2434 | Serge | 440 | mov eax, [app_page_tabs+edi*4] |
441 | test eax, 1 |
||
442 | jz .next |
||
2987 | Serge | 443 | |
444 | mov dword [app_page_tabs+edi*4], 0 |
||
2434 | Serge | 445 | invlpg [ebx] |
446 | call free_page |
||
164 | serge | 447 | |
2434 | Serge | 448 | .next: |
2987 | Serge | 449 | inc edi |
450 | add ebx, 0x1000 |
||
2434 | Serge | 451 | cmp edi, esi |
452 | jb @B |
||
164 | serge | 453 | |
2987 | Serge | 454 | mov ecx, pg_data.mutex |
455 | call mutex_unlock |
||
456 | |||
164 | serge | 457 | .update_size: |
2987 | Serge | 458 | mov edx, [current_slot] |
2434 | Serge | 459 | mov ebx, [new_size] |
5201 | serge | 460 | mov edx, [edx+APPDATA.process] |
461 | mov [edx+PROC.mem_used], ebx |
||
2987 | Serge | 462 | .exit: |
463 | pop edi |
||
464 | pop esi |
||
465 | pop ebx |
||
2434 | Serge | 466 | xor eax, eax |
467 | ret |
||
2987 | Serge | 468 | |
164 | serge | 469 | .expand: |
470 | |||
2987 | Serge | 471 | mov ecx, pg_data.mutex |
472 | call mutex_lock |
||
164 | serge | 473 | |
2987 | Serge | 474 | xchg esi, edi |
475 | |||
476 | push esi ;new size |
||
477 | push edi ;old size |
||
478 | |||
2434 | Serge | 479 | add edi, 0x3FFFFF |
480 | and edi, not(0x3FFFFF) |
||
481 | add esi, 0x3FFFFF |
||
482 | and esi, not(0x3FFFFF) |
||
164 | serge | 483 | |
2987 | Serge | 484 | cmp edi, esi |
2434 | Serge | 485 | jae .grow |
2987 | Serge | 486 | @@: |
2434 | Serge | 487 | call alloc_page |
488 | test eax, eax |
||
2987 | Serge | 489 | jz .exit_fail |
164 | serge | 490 | |
2434 | Serge | 491 | stdcall map_page_table, edi, eax |
164 | serge | 492 | |
2434 | Serge | 493 | push edi |
494 | shr edi, 10 |
||
495 | add edi, page_tabs |
||
496 | mov ecx, 1024 |
||
497 | xor eax, eax |
||
498 | cld |
||
499 | rep stosd |
||
500 | pop edi |
||
164 | serge | 501 | |
2434 | Serge | 502 | add edi, 0x00400000 |
503 | cmp edi, esi |
||
504 | jb @B |
||
164 | serge | 505 | .grow: |
2987 | Serge | 506 | pop edi ;old size |
507 | pop ecx ;new size |
||
164 | serge | 508 | |
2987 | Serge | 509 | shr edi, 10 |
510 | shr ecx, 10 |
||
511 | sub ecx, edi |
||
512 | shr ecx, 2 ;pages count |
||
513 | mov eax, 2 |
||
514 | |||
515 | add edi, app_page_tabs |
||
2434 | Serge | 516 | rep stosd |
164 | serge | 517 | |
2987 | Serge | 518 | mov ecx, pg_data.mutex |
519 | call mutex_unlock |
||
164 | serge | 520 | |
2434 | Serge | 521 | jmp .update_size |
2987 | Serge | 522 | |
523 | .exit_fail: |
||
2434 | Serge | 524 | mov ecx, pg_data.mutex |
525 | call mutex_unlock |
||
2130 | serge | 526 | |
2987 | Serge | 527 | add esp, 8 |
528 | pop edi |
||
529 | pop esi |
||
530 | pop ebx |
||
2434 | Serge | 531 | xor eax, eax |
532 | inc eax |
||
533 | ret |
||
164 | serge | 534 | endp |
535 | |||
2987 | Serge | 536 | |
285 | serge | 537 | ; param |
538 | ; eax= linear address |
||
539 | ; |
||
540 | ; retval |
||
541 | ; eax= phisical page address |
||
542 | |||
164 | serge | 543 | align 4 |
285 | serge | 544 | get_pg_addr: |
3232 | Serge | 545 | sub eax, OS_BASE |
546 | cmp eax, 0x400000 |
||
547 | jb @f |
||
2434 | Serge | 548 | shr eax, 12 |
3232 | Serge | 549 | mov eax, [page_tabs+(eax+(OS_BASE shr 12))*4] |
550 | @@: |
||
2434 | Serge | 551 | and eax, 0xFFFFF000 |
552 | ret |
||
164 | serge | 553 | |
465 | serge | 554 | |
188 | serge | 555 | align 4 |
1105 | Galkov | 556 | ; Now it is called from core/sys32::exc_c (see stack frame there) |
164 | serge | 557 | proc page_fault_handler |
465 | serge | 558 | |
1056 | Galkov | 559 | .err_addr equ ebp-4 |
709 | diamond | 560 | |
1105 | Galkov | 561 | push ebx ;save exception number (#PF) |
1056 | Galkov | 562 | mov ebp, esp |
563 | mov ebx, cr2 |
||
1105 | Galkov | 564 | push ebx ;that is locals: .err_addr = cr2 |
1056 | Galkov | 565 | inc [pg_data.pages_faults] |
465 | serge | 566 | |
1056 | Galkov | 567 | mov eax, [pf_err_code] |
164 | serge | 568 | |
1056 | Galkov | 569 | cmp ebx, OS_BASE ;ebx == .err_addr |
3555 | Serge | 570 | jb .user_space ;страница в памяти приложения ; |
188 | serge | 571 | |
1056 | Galkov | 572 | cmp ebx, page_tabs |
3555 | Serge | 573 | jb .kernel_space ;страница в памяти ядра |
164 | serge | 574 | |
1056 | Galkov | 575 | cmp ebx, kernel_tabs |
3555 | Serge | 576 | jb .alloc;.app_tabs ;таблицы страниц приложения ; |
577 | ;просто создадим одну |
||
1056 | Galkov | 578 | .core_tabs: |
579 | .fail: ;simply return to caller |
||
580 | mov esp, ebp |
||
1105 | Galkov | 581 | pop ebx ;restore exception number (#PF) |
1056 | Galkov | 582 | ret |
378 | serge | 583 | |
164 | serge | 584 | .user_space: |
5565 | serge | 585 | test eax, PG_READ |
3555 | Serge | 586 | jnz .err_access ;Страница присутствует |
587 | ;Ошибка доступа ? |
||
465 | serge | 588 | |
1056 | Galkov | 589 | shr ebx, 12 |
590 | mov ecx, ebx |
||
591 | shr ecx, 10 |
||
592 | mov edx, [master_tab+ecx*4] |
||
5565 | serge | 593 | test edx, PG_READ |
3555 | Serge | 594 | jz .fail ;таблица страниц не создана |
595 | ;неверный адрес в программе |
||
172 | serge | 596 | |
1056 | Galkov | 597 | mov eax, [page_tabs+ebx*4] |
598 | test eax, 2 |
||
3555 | Serge | 599 | jz .fail ;адрес не зарезервирован для ; |
600 | ;использования. Ошибка |
||
188 | serge | 601 | .alloc: |
1056 | Galkov | 602 | call alloc_page |
603 | test eax, eax |
||
604 | jz .fail |
||
164 | serge | 605 | |
5565 | serge | 606 | stdcall map_page, [.err_addr], eax, PG_UWR |
164 | serge | 607 | |
1056 | Galkov | 608 | mov edi, [.err_addr] |
609 | and edi, 0xFFFFF000 |
||
610 | mov ecx, 1024 |
||
611 | xor eax, eax |
||
612 | ;cld ;caller is duty for this |
||
2434 | Serge | 613 | rep stosd |
1056 | Galkov | 614 | .exit: ;iret with repeat fault instruction |
2434 | Serge | 615 | add esp, 12;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
1056 | Galkov | 616 | restore_ring3_context |
617 | iretd |
||
465 | serge | 618 | |
1289 | diamond | 619 | .err_access: |
620 | ; access denied? this may be a result of copy-on-write protection for DLL |
||
621 | ; check list of HDLLs |
||
622 | and ebx, not 0xFFF |
||
5201 | serge | 623 | mov eax, [current_process] |
624 | mov eax, [eax+PROC.dlls_list_ptr] |
||
1311 | diamond | 625 | test eax, eax |
626 | jz .fail |
||
627 | mov esi, [eax+HDLL.fd] |
||
1289 | diamond | 628 | .scan_hdll: |
629 | cmp esi, eax |
||
630 | jz .fail |
||
631 | mov edx, ebx |
||
632 | sub edx, [esi+HDLL.base] |
||
633 | cmp edx, [esi+HDLL.size] |
||
634 | jb .fault_in_hdll |
||
635 | .scan_hdll.next: |
||
1311 | diamond | 636 | mov esi, [esi+HDLL.fd] |
1289 | diamond | 637 | jmp .scan_hdll |
638 | .fault_in_hdll: |
||
639 | ; allocate new page, map it as rw and copy data |
||
640 | call alloc_page |
||
641 | test eax, eax |
||
642 | jz .fail |
||
5565 | serge | 643 | stdcall map_page, ebx, eax, PG_UWR |
1289 | diamond | 644 | mov edi, ebx |
645 | mov ecx, 1024 |
||
646 | sub ebx, [esi+HDLL.base] |
||
647 | mov esi, [esi+HDLL.parent] |
||
648 | mov esi, [esi+DLLDESCR.data] |
||
649 | add esi, ebx |
||
2434 | Serge | 650 | rep movsd |
1289 | diamond | 651 | jmp .exit |
465 | serge | 652 | |
653 | .kernel_space: |
||
5565 | serge | 654 | test eax, PG_READ |
3555 | Serge | 655 | jz .fail ;страница не присутствует |
465 | serge | 656 | |
2434 | Serge | 657 | test eax, 12 ;U/S (+below) |
3555 | Serge | 658 | jnz .fail ;приложение обратилось к памяти |
659 | ;ядра |
||
1056 | Galkov | 660 | ;test eax, 8 |
3555 | Serge | 661 | ;jnz .fail ;установлен зарезервированный бит |
662 | ;в таблицах страниц. добавлено в P4/Xeon |
||
465 | serge | 663 | |
3555 | Serge | 664 | ;попытка записи в защищённую страницу ядра |
465 | serge | 665 | |
1056 | Galkov | 666 | cmp ebx, tss._io_map_0 |
667 | jb .fail |
||
465 | serge | 668 | |
1056 | Galkov | 669 | cmp ebx, tss._io_map_0+8192 |
670 | jae .fail |
||
465 | serge | 671 | |
672 | ; io permission map |
||
673 | ; copy-on-write protection |
||
674 | |||
1056 | Galkov | 675 | call alloc_page |
676 | test eax, eax |
||
677 | jz .fail |
||
465 | serge | 678 | |
1056 | Galkov | 679 | push eax |
5565 | serge | 680 | stdcall map_page, [.err_addr], eax, dword PG_SWR |
1056 | Galkov | 681 | pop eax |
682 | mov edi, [.err_addr] |
||
683 | and edi, -4096 |
||
684 | lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
||
465 | serge | 685 | |
1056 | Galkov | 686 | mov ebx, esi |
687 | shr ebx, 12 |
||
688 | mov edx, [current_slot] |
||
5565 | serge | 689 | or eax, PG_SWR |
1056 | Galkov | 690 | mov [edx+APPDATA.io_map+ebx*4], eax |
465 | serge | 691 | |
1056 | Galkov | 692 | add esi, [default_io_map] |
693 | mov ecx, 4096/4 |
||
694 | ;cld ;caller is duty for this |
||
2434 | Serge | 695 | rep movsd |
1056 | Galkov | 696 | jmp .exit |
164 | serge | 697 | endp |
698 | |||
1314 | diamond | 699 | ; returns number of mapped bytes |
5201 | serge | 700 | proc map_mem_ipc stdcall, lin_addr:dword,slot:dword,\ |
1314 | diamond | 701 | ofs:dword,buf_size:dword,req_access:dword |
5201 | serge | 702 | locals |
703 | count dd ? |
||
704 | process dd ? |
||
705 | endl |
||
1314 | diamond | 706 | |
5201 | serge | 707 | mov [count], 0 |
2434 | Serge | 708 | cmp [buf_size], 0 |
709 | jz .exit |
||
164 | serge | 710 | |
2434 | Serge | 711 | mov eax, [slot] |
712 | shl eax, 8 |
||
5201 | serge | 713 | mov eax, [SLOT_BASE+eax+APPDATA.process] |
714 | test eax, eax |
||
715 | jz .exit |
||
164 | serge | 716 | |
5201 | serge | 717 | mov [process], eax |
2434 | Serge | 718 | mov ebx, [ofs] |
719 | shr ebx, 22 |
||
5201 | serge | 720 | mov eax, [eax+PROC.pdt_0+ebx*4] ;get page table |
721 | mov esi, [ipc_ptab] |
||
2434 | Serge | 722 | and eax, 0xFFFFF000 |
723 | jz .exit |
||
5565 | serge | 724 | stdcall map_page, esi, eax, PG_SWR |
2434 | Serge | 725 | @@: |
726 | mov edi, [lin_addr] |
||
727 | and edi, 0xFFFFF000 |
||
728 | mov ecx, [buf_size] |
||
729 | add ecx, 4095 |
||
730 | shr ecx, 12 |
||
5201 | serge | 731 | inc ecx ; ??????????? |
164 | serge | 732 | |
2434 | Serge | 733 | mov edx, [ofs] |
734 | shr edx, 12 |
||
735 | and edx, 0x3FF |
||
1314 | diamond | 736 | .map: |
2434 | Serge | 737 | stdcall safe_map_page, [slot], [req_access], [ofs] |
738 | jnc .exit |
||
5201 | serge | 739 | add [count], PAGE_SIZE |
740 | add [ofs], PAGE_SIZE |
||
2434 | Serge | 741 | dec ecx |
742 | jz .exit |
||
5201 | serge | 743 | |
744 | add edi, PAGE_SIZE |
||
2434 | Serge | 745 | inc edx |
5201 | serge | 746 | cmp edx, 1024 |
2434 | Serge | 747 | jnz .map |
5201 | serge | 748 | |
2434 | Serge | 749 | inc ebx |
5201 | serge | 750 | mov eax, [process] |
751 | mov eax, [eax+PROC.pdt_0+ebx*4] |
||
2434 | Serge | 752 | and eax, 0xFFFFF000 |
753 | jz .exit |
||
5201 | serge | 754 | |
5565 | serge | 755 | stdcall map_page, esi, eax, PG_SWR |
2434 | Serge | 756 | xor edx, edx |
757 | jmp .map |
||
164 | serge | 758 | .exit: |
5201 | serge | 759 | mov eax, [count] |
2434 | Serge | 760 | ret |
164 | serge | 761 | endp |
762 | |||
1314 | diamond | 763 | proc map_memEx stdcall, lin_addr:dword,slot:dword,\ |
764 | ofs:dword,buf_size:dword,req_access:dword |
||
5201 | serge | 765 | locals |
766 | count dd ? |
||
767 | process dd ? |
||
768 | endl |
||
1314 | diamond | 769 | |
5201 | serge | 770 | mov [count], 0 |
2434 | Serge | 771 | cmp [buf_size], 0 |
772 | jz .exit |
||
164 | serge | 773 | |
2434 | Serge | 774 | mov eax, [slot] |
775 | shl eax, 8 |
||
5201 | serge | 776 | mov eax, [SLOT_BASE+eax+APPDATA.process] |
777 | test eax, eax |
||
778 | jz .exit |
||
164 | serge | 779 | |
5201 | serge | 780 | mov [process], eax |
2434 | Serge | 781 | mov ebx, [ofs] |
782 | shr ebx, 22 |
||
5201 | serge | 783 | mov eax, [eax+PROC.pdt_0+ebx*4] ;get page table |
784 | mov esi, [proc_mem_tab] |
||
2434 | Serge | 785 | and eax, 0xFFFFF000 |
786 | jz .exit |
||
5565 | serge | 787 | stdcall map_page, esi, eax, PG_SWR |
2434 | Serge | 788 | @@: |
789 | mov edi, [lin_addr] |
||
790 | and edi, 0xFFFFF000 |
||
791 | mov ecx, [buf_size] |
||
792 | add ecx, 4095 |
||
793 | shr ecx, 12 |
||
5201 | serge | 794 | inc ecx ; ??????????? |
164 | serge | 795 | |
2434 | Serge | 796 | mov edx, [ofs] |
797 | shr edx, 12 |
||
798 | and edx, 0x3FF |
||
1314 | diamond | 799 | .map: |
2434 | Serge | 800 | stdcall safe_map_page, [slot], [req_access], [ofs] |
801 | jnc .exit |
||
5201 | serge | 802 | add [count], PAGE_SIZE |
803 | add [ofs], PAGE_SIZE |
||
804 | dec ecx |
||
805 | jz .exit |
||
806 | |||
807 | add edi, PAGE_SIZE |
||
2434 | Serge | 808 | inc edx |
5201 | serge | 809 | cmp edx, 1024 |
2434 | Serge | 810 | jnz .map |
5201 | serge | 811 | |
812 | inc ebx |
||
813 | mov eax, [process] |
||
814 | mov eax, [eax+PROC.pdt_0+ebx*4] |
||
815 | and eax, 0xFFFFF000 |
||
816 | jz .exit |
||
817 | |||
5565 | serge | 818 | stdcall map_page, esi, eax, PG_SWR |
5201 | serge | 819 | xor edx, edx |
820 | jmp .map |
||
164 | serge | 821 | .exit: |
5201 | serge | 822 | mov eax, [count] |
2434 | Serge | 823 | ret |
164 | serge | 824 | endp |
825 | |||
1314 | diamond | 826 | ; in: esi+edx*4 = pointer to page table entry |
827 | ; in: [slot], [req_access], [ofs] on the stack |
||
828 | ; in: edi = linear address to map |
||
829 | ; out: CF cleared <=> failed |
||
830 | ; destroys: only eax |
||
831 | proc safe_map_page stdcall, slot:dword, req_access:dword, ofs:dword |
||
2434 | Serge | 832 | mov eax, [esi+edx*4] |
5565 | serge | 833 | test al, PG_READ |
2434 | Serge | 834 | jz .not_present |
835 | test al, PG_WRITE |
||
836 | jz .resolve_readonly |
||
1314 | diamond | 837 | ; normal case: writable page, just map with requested access |
838 | .map: |
||
2434 | Serge | 839 | stdcall map_page, edi, eax, [req_access] |
840 | stc |
||
1314 | diamond | 841 | .fail: |
2434 | Serge | 842 | ret |
1314 | diamond | 843 | .not_present: |
844 | ; check for alloc-on-demand page |
||
2434 | Serge | 845 | test al, 2 |
846 | jz .fail |
||
1314 | diamond | 847 | ; allocate new page, save it to source page table |
2434 | Serge | 848 | push ecx |
849 | call alloc_page |
||
850 | pop ecx |
||
851 | test eax, eax |
||
852 | jz .fail |
||
5565 | serge | 853 | or al, PG_UWR |
2434 | Serge | 854 | mov [esi+edx*4], eax |
855 | jmp .map |
||
1314 | diamond | 856 | .resolve_readonly: |
857 | ; readonly page, probably copy-on-write |
||
858 | ; check: readonly request of readonly page is ok |
||
2434 | Serge | 859 | test [req_access], PG_WRITE |
860 | jz .map |
||
1314 | diamond | 861 | ; find control structure for this page |
2434 | Serge | 862 | pushf |
863 | cli |
||
864 | cld |
||
865 | push ebx ecx |
||
866 | mov eax, [slot] |
||
867 | shl eax, 8 |
||
5201 | serge | 868 | mov eax, [SLOT_BASE+eax+APPDATA.process] |
869 | mov eax, [eax+PROC.dlls_list_ptr] |
||
2434 | Serge | 870 | test eax, eax |
871 | jz .no_hdll |
||
872 | mov ecx, [eax+HDLL.fd] |
||
1314 | diamond | 873 | .scan_hdll: |
2434 | Serge | 874 | cmp ecx, eax |
875 | jz .no_hdll |
||
876 | mov ebx, [ofs] |
||
877 | and ebx, not 0xFFF |
||
878 | sub ebx, [ecx+HDLL.base] |
||
879 | cmp ebx, [ecx+HDLL.size] |
||
880 | jb .hdll_found |
||
881 | mov ecx, [ecx+HDLL.fd] |
||
882 | jmp .scan_hdll |
||
1314 | diamond | 883 | .no_hdll: |
2434 | Serge | 884 | pop ecx ebx |
885 | popf |
||
886 | clc |
||
887 | ret |
||
1314 | diamond | 888 | .hdll_found: |
889 | ; allocate page, save it in page table, map it, copy contents from base |
||
2434 | Serge | 890 | mov eax, [ecx+HDLL.parent] |
891 | add ebx, [eax+DLLDESCR.data] |
||
892 | call alloc_page |
||
893 | test eax, eax |
||
894 | jz .no_hdll |
||
5565 | serge | 895 | or al, PG_UWR |
2434 | Serge | 896 | mov [esi+edx*4], eax |
897 | stdcall map_page, edi, eax, [req_access] |
||
898 | push esi edi |
||
899 | mov esi, ebx |
||
900 | mov ecx, 4096/4 |
||
901 | rep movsd |
||
902 | pop edi esi |
||
903 | pop ecx ebx |
||
904 | popf |
||
905 | stc |
||
906 | ret |
||
1314 | diamond | 907 | endp |
164 | serge | 908 | |
909 | sys_IPC: |
||
910 | ;input: |
||
1496 | Lrz | 911 | ; ebx=1 - set ipc buffer area |
912 | ; ecx=address of buffer |
||
913 | ; edx=size of buffer |
||
164 | serge | 914 | ; eax=2 - send message |
915 | ; ebx=PID |
||
916 | ; ecx=address of message |
||
917 | ; edx=size of message |
||
918 | |||
2434 | Serge | 919 | dec ebx |
920 | jnz @f |
||
164 | serge | 921 | |
2434 | Serge | 922 | mov eax, [current_slot] |
1496 | Lrz | 923 | pushf |
924 | cli |
||
2434 | Serge | 925 | mov [eax+APPDATA.ipc_start], ecx ;set fields in extended information area |
926 | mov [eax+APPDATA.ipc_size], edx |
||
164 | serge | 927 | |
2434 | Serge | 928 | add edx, ecx |
929 | add edx, 4095 |
||
930 | and edx, not 4095 |
||
164 | serge | 931 | |
2434 | Serge | 932 | .touch: |
933 | mov eax, [ecx] |
||
934 | add ecx, 0x1000 |
||
935 | cmp ecx, edx |
||
936 | jb .touch |
||
164 | serge | 937 | |
1496 | Lrz | 938 | popf |
2434 | Serge | 939 | mov [esp+32], ebx ;ebx=0 |
1496 | Lrz | 940 | ret |
164 | serge | 941 | |
1496 | Lrz | 942 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
943 | ;2 |
||
944 | @@: |
||
2434 | Serge | 945 | dec ebx |
946 | jnz @f |
||
164 | serge | 947 | |
1496 | Lrz | 948 | stdcall sys_ipc_send, ecx, edx, esi |
2434 | Serge | 949 | mov [esp+32], eax |
1496 | Lrz | 950 | ret |
951 | @@: |
||
2434 | Serge | 952 | or eax, -1 |
953 | mov [esp+32], eax |
||
1496 | Lrz | 954 | ret |
955 | |||
164 | serge | 956 | proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword |
957 | locals |
||
958 | dst_slot dd ? |
||
959 | dst_offset dd ? |
||
960 | buf_size dd ? |
||
536 | diamond | 961 | used_buf dd ? |
164 | serge | 962 | endl |
963 | |||
2434 | Serge | 964 | pushf |
965 | cli |
||
164 | serge | 966 | |
2434 | Serge | 967 | mov eax, [PID] |
968 | call pid_to_slot |
||
969 | test eax, eax |
||
970 | jz .no_pid |
||
164 | serge | 971 | |
2434 | Serge | 972 | mov [dst_slot], eax |
973 | shl eax, 8 |
||
5201 | serge | 974 | mov edi, [eax+SLOT_BASE+APPDATA.ipc_start] ;is ipc area defined? |
2434 | Serge | 975 | test edi, edi |
976 | jz .no_ipc_area |
||
164 | serge | 977 | |
2434 | Serge | 978 | mov ebx, edi |
979 | and ebx, 0xFFF |
||
980 | mov [dst_offset], ebx |
||
164 | serge | 981 | |
5201 | serge | 982 | mov esi, [eax+SLOT_BASE+APPDATA.ipc_size] |
2434 | Serge | 983 | mov [buf_size], esi |
164 | serge | 984 | |
2434 | Serge | 985 | mov ecx, [ipc_tmp] |
986 | cmp esi, 0x40000-0x1000; size of [ipc_tmp] minus one page |
||
987 | jbe @f |
||
988 | push esi edi |
||
989 | add esi, 0x1000 |
||
990 | stdcall alloc_kernel_space, esi |
||
991 | mov ecx, eax |
||
992 | pop edi esi |
||
536 | diamond | 993 | @@: |
2434 | Serge | 994 | mov [used_buf], ecx |
5201 | serge | 995 | stdcall map_mem_ipc, ecx, [dst_slot], \ |
5565 | serge | 996 | edi, esi, PG_SWR |
164 | serge | 997 | |
2434 | Serge | 998 | mov edi, [dst_offset] |
999 | add edi, [used_buf] |
||
1000 | cmp dword [edi], 0 |
||
1001 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
||
227 | serge | 1002 | |
2434 | Serge | 1003 | mov edx, dword [edi+4] |
1004 | lea ebx, [edx+8] |
||
1005 | add ebx, [msg_size] |
||
1006 | cmp ebx, [buf_size] |
||
1007 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
||
227 | serge | 1008 | |
2434 | Serge | 1009 | mov dword [edi+4], ebx |
1010 | mov eax, [TASK_BASE] |
||
1011 | mov eax, [eax+0x04] ;eax - our PID |
||
1012 | add edi, edx |
||
1013 | mov [edi], eax |
||
1014 | mov ecx, [msg_size] |
||
164 | serge | 1015 | |
2434 | Serge | 1016 | mov [edi+4], ecx |
1017 | add edi, 8 |
||
1018 | mov esi, [msg_addr] |
||
465 | serge | 1019 | ; add esi, new_app_base |
2434 | Serge | 1020 | cld |
1021 | rep movsb |
||
164 | serge | 1022 | |
2434 | Serge | 1023 | mov ebx, [ipc_tmp] |
1024 | mov edx, ebx |
||
1025 | shr ebx, 12 |
||
1026 | xor eax, eax |
||
1027 | mov [page_tabs+ebx*4], eax |
||
1028 | invlpg [edx] |
||
164 | serge | 1029 | |
2434 | Serge | 1030 | mov ebx, [ipc_pdir] |
1031 | mov edx, ebx |
||
1032 | shr ebx, 12 |
||
1033 | xor eax, eax |
||
1034 | mov [page_tabs+ebx*4], eax |
||
1035 | invlpg [edx] |
||
164 | serge | 1036 | |
2434 | Serge | 1037 | mov ebx, [ipc_ptab] |
1038 | mov edx, ebx |
||
1039 | shr ebx, 12 |
||
1040 | xor eax, eax |
||
1041 | mov [page_tabs+ebx*4], eax |
||
1042 | invlpg [edx] |
||
164 | serge | 1043 | |
2434 | Serge | 1044 | mov eax, [dst_slot] |
1045 | shl eax, 8 |
||
1046 | or [eax+SLOT_BASE+0xA8], dword 0x40 |
||
1047 | push 0 |
||
1048 | jmp .ret |
||
164 | serge | 1049 | .no_pid: |
2434 | Serge | 1050 | popf |
1051 | mov eax, 4 |
||
1052 | ret |
||
164 | serge | 1053 | .no_ipc_area: |
2434 | Serge | 1054 | popf |
1055 | xor eax, eax |
||
1056 | inc eax |
||
1057 | ret |
||
164 | serge | 1058 | .ipc_blocked: |
2434 | Serge | 1059 | push 2 |
1060 | jmp .ret |
||
164 | serge | 1061 | .buffer_overflow: |
2434 | Serge | 1062 | push 3 |
536 | diamond | 1063 | .ret: |
2434 | Serge | 1064 | mov eax, [used_buf] |
1065 | cmp eax, [ipc_tmp] |
||
5201 | serge | 1066 | je @f |
2434 | Serge | 1067 | stdcall free_kernel_space, eax |
536 | diamond | 1068 | @@: |
2434 | Serge | 1069 | pop eax |
1070 | popf |
||
1071 | ret |
||
164 | serge | 1072 | endp |
1073 | |||
1074 | align 4 |
||
170 | serge | 1075 | sysfn_meminfo: |
2434 | Serge | 1076 | cmp ecx, OS_BASE |
1077 | jae .fail |
||
172 | serge | 1078 | |
2434 | Serge | 1079 | mov eax, [pg_data.pages_count] |
1080 | mov [ecx], eax |
||
1081 | shl eax, 12 |
||
1082 | mov [esp+32], eax |
||
1083 | mov eax, [pg_data.pages_free] |
||
1084 | mov [ecx+4], eax |
||
1085 | mov eax, [pg_data.pages_faults] |
||
1086 | mov [ecx+8], eax |
||
1087 | mov eax, [heap_size] |
||
1088 | mov [ecx+12], eax |
||
1089 | mov eax, [heap_free] |
||
1090 | mov [ecx+16], eax |
||
1091 | mov eax, [heap_blocks] |
||
1092 | mov [ecx+20], eax |
||
1093 | mov eax, [free_blocks] |
||
1094 | mov [ecx+24], eax |
||
1095 | ret |
||
172 | serge | 1096 | .fail: |
2434 | Serge | 1097 | or dword [esp+32], -1 |
1098 | ret |
||
1629 | serge | 1099 | |
164 | serge | 1100 | align 4 |
940 | serge | 1101 | f68: |
2434 | Serge | 1102 | cmp ebx, 4 |
1103 | jbe sys_sheduler |
||
164 | serge | 1104 | |
2434 | Serge | 1105 | cmp ebx, 11 |
1106 | jb .fail |
||
164 | serge | 1107 | |
3908 | Serge | 1108 | cmp ebx, 27 |
2434 | Serge | 1109 | ja .fail |
940 | serge | 1110 | |
2434 | Serge | 1111 | jmp dword [f68call+ebx*4-11*4] |
940 | serge | 1112 | .11: |
2434 | Serge | 1113 | call init_heap |
1114 | mov [esp+32], eax |
||
1115 | ret |
||
940 | serge | 1116 | .12: |
2434 | Serge | 1117 | stdcall user_alloc, ecx |
1118 | mov [esp+32], eax |
||
1119 | ret |
||
940 | serge | 1120 | .13: |
2434 | Serge | 1121 | stdcall user_free, ecx |
1122 | mov [esp+32], eax |
||
1123 | ret |
||
940 | serge | 1124 | .14: |
2434 | Serge | 1125 | cmp ecx, OS_BASE |
1126 | jae .fail |
||
1127 | mov edi, ecx |
||
1128 | call get_event_ex |
||
1129 | mov [esp+32], eax |
||
1130 | ret |
||
940 | serge | 1131 | .16: |
2434 | Serge | 1132 | test ecx, ecx |
1133 | jz .fail |
||
1134 | cmp ecx, OS_BASE |
||
1135 | jae .fail |
||
1136 | stdcall get_service, ecx |
||
1137 | mov [esp+32], eax |
||
1138 | ret |
||
940 | serge | 1139 | .17: |
2434 | Serge | 1140 | call srv_handlerEx ;ecx |
1141 | mov [esp+32], eax |
||
1142 | ret |
||
940 | serge | 1143 | .19: |
2434 | Serge | 1144 | cmp ecx, OS_BASE |
1145 | jae .fail |
||
1146 | stdcall load_library, ecx |
||
1147 | mov [esp+32], eax |
||
1148 | ret |
||
940 | serge | 1149 | .20: |
2434 | Serge | 1150 | mov eax, edx |
1151 | mov ebx, ecx |
||
1152 | call user_realloc ;in: eax = pointer, ebx = new size |
||
1153 | mov [esp+32], eax |
||
1154 | ret |
||
940 | serge | 1155 | .21: |
2434 | Serge | 1156 | cmp ecx, OS_BASE |
1157 | jae .fail |
||
740 | serge | 1158 | |
2987 | Serge | 1159 | cmp edx, OS_BASE |
2434 | Serge | 1160 | jae .fail |
1316 | serge | 1161 | |
4423 | Serge | 1162 | stdcall load_pe_driver, ecx, edx |
2434 | Serge | 1163 | mov [esp+32], eax |
1164 | ret |
||
940 | serge | 1165 | .22: |
2434 | Serge | 1166 | cmp ecx, OS_BASE |
1167 | jae .fail |
||
740 | serge | 1168 | |
2434 | Serge | 1169 | stdcall shmem_open, ecx, edx, esi |
1170 | mov [esp+24], edx |
||
1171 | mov [esp+32], eax |
||
1172 | ret |
||
740 | serge | 1173 | |
943 | serge | 1174 | .23: |
2434 | Serge | 1175 | cmp ecx, OS_BASE |
1176 | jae .fail |
||
943 | serge | 1177 | |
2434 | Serge | 1178 | stdcall shmem_close, ecx |
1179 | mov [esp+32], eax |
||
1180 | ret |
||
1275 | serge | 1181 | .24: |
2434 | Serge | 1182 | mov eax, [current_slot] |
1183 | xchg ecx, [eax+APPDATA.exc_handler] |
||
1184 | xchg edx, [eax+APPDATA.except_mask] |
||
1185 | mov [esp+32], ecx ; reg_eax+8 |
||
1186 | mov [esp+20], edx ; reg_ebx+8 |
||
1187 | ret |
||
1275 | serge | 1188 | .25: |
2434 | Serge | 1189 | cmp ecx, 32 |
1190 | jae .fail |
||
1191 | mov eax, [current_slot] |
||
1192 | btr [eax+APPDATA.except_mask], ecx |
||
1193 | setc byte[esp+32] |
||
1194 | jecxz @f |
||
1195 | bts [eax+APPDATA.except_mask], ecx |
||
1275 | serge | 1196 | @@: |
2434 | Serge | 1197 | ret |
943 | serge | 1198 | |
2434 | Serge | 1199 | .26: |
1200 | stdcall user_unmap, ecx, edx, esi |
||
1201 | mov [esp+32], eax |
||
1202 | ret |
||
1203 | |||
3908 | Serge | 1204 | .27: |
1205 | cmp ecx, OS_BASE |
||
1206 | jae .fail |
||
1207 | |||
1208 | stdcall load_file_umode, ecx |
||
1209 | mov [esp+24], edx |
||
1210 | mov [esp+32], eax |
||
1211 | ret |
||
1212 | |||
164 | serge | 1213 | .fail: |
2434 | Serge | 1214 | xor eax, eax |
1215 | mov [esp+32], eax |
||
1216 | ret |
||
164 | serge | 1217 | |
5596 | serge | 1218 | |
164 | serge | 1219 | align 4 |
5596 | serge | 1220 | f68call: ; keep this table closer to main code |
1221 | |||
1629 | serge | 1222 | dd f68.11 ; init_heap |
1223 | dd f68.12 ; user_alloc |
||
1224 | dd f68.13 ; user_free |
||
1225 | dd f68.14 ; get_event_ex |
||
1226 | dd f68.fail ; moved to f68.24 |
||
1227 | dd f68.16 ; get_service |
||
1228 | dd f68.17 ; call_service |
||
1229 | dd f68.fail ; moved to f68.25 |
||
1230 | dd f68.19 ; load_dll |
||
1231 | dd f68.20 ; user_realloc |
||
1232 | dd f68.21 ; load_driver |
||
1233 | dd f68.22 ; shmem_open |
||
1234 | dd f68.23 ; shmem_close |
||
2434 | Serge | 1235 | dd f68.24 ; set exception handler |
1236 | dd f68.25 ; unmask exception |
||
1237 | dd f68.26 ; user_unmap |
||
3908 | Serge | 1238 | dd f68.27 ; load_file_umode |
1629 | serge | 1239 | |
5596 | serge | 1240 | |
1629 | serge | 1241 | align 4 |
4423 | Serge | 1242 | proc load_pe_driver stdcall, file:dword, cmdline:dword |
1243 | push esi |
||
819 | serge | 1244 | |
2434 | Serge | 1245 | stdcall load_PE, [file] |
1246 | test eax, eax |
||
1247 | jz .fail |
||
819 | serge | 1248 | |
2434 | Serge | 1249 | mov esi, eax |
4423 | Serge | 1250 | push [cmdline] |
1251 | push DRV_ENTRY |
||
1252 | call eax |
||
1253 | pop ecx |
||
1254 | pop ecx |
||
2434 | Serge | 1255 | test eax, eax |
1256 | jz .fail |
||
819 | serge | 1257 | |
2434 | Serge | 1258 | mov [eax+SRV.entry], esi |
4423 | Serge | 1259 | pop esi |
2434 | Serge | 1260 | ret |
819 | serge | 1261 | |
1262 | .fail: |
||
2434 | Serge | 1263 | xor eax, eax |
4423 | Serge | 1264 | pop esi |
2434 | Serge | 1265 | ret |
819 | serge | 1266 | endp |
1267 | |||
1268 | align 4 |
||
520 | serge | 1269 | proc create_ring_buffer stdcall, size:dword, flags:dword |
1270 | locals |
||
1271 | buf_ptr dd ? |
||
1272 | endl |
||
237 | serge | 1273 | |
2434 | Serge | 1274 | mov eax, [size] |
1275 | test eax, eax |
||
1276 | jz .fail |
||
520 | serge | 1277 | |
2434 | Serge | 1278 | add eax, eax |
1279 | stdcall alloc_kernel_space, eax |
||
1280 | test eax, eax |
||
1281 | jz .fail |
||
520 | serge | 1282 | |
2434 | Serge | 1283 | push ebx |
662 | serge | 1284 | |
2434 | Serge | 1285 | mov [buf_ptr], eax |
520 | serge | 1286 | |
2434 | Serge | 1287 | mov ebx, [size] |
1288 | shr ebx, 12 |
||
1289 | push ebx |
||
520 | serge | 1290 | |
2434 | Serge | 1291 | stdcall alloc_pages, ebx |
1292 | pop ecx |
||
520 | serge | 1293 | |
2434 | Serge | 1294 | test eax, eax |
1295 | jz .mm_fail |
||
520 | serge | 1296 | |
2434 | Serge | 1297 | push edi |
662 | serge | 1298 | |
2434 | Serge | 1299 | or eax, [flags] |
1300 | mov edi, [buf_ptr] |
||
1301 | mov ebx, [buf_ptr] |
||
1302 | mov edx, ecx |
||
1303 | shl edx, 2 |
||
1304 | shr edi, 10 |
||
520 | serge | 1305 | @@: |
2434 | Serge | 1306 | mov [page_tabs+edi], eax |
1307 | mov [page_tabs+edi+edx], eax |
||
1308 | invlpg [ebx] |
||
1309 | invlpg [ebx+0x10000] |
||
1310 | add eax, 0x1000 |
||
1311 | add ebx, 0x1000 |
||
1312 | add edi, 4 |
||
1313 | dec ecx |
||
1314 | jnz @B |
||
520 | serge | 1315 | |
2434 | Serge | 1316 | mov eax, [buf_ptr] |
1317 | pop edi |
||
1318 | pop ebx |
||
1319 | ret |
||
520 | serge | 1320 | .mm_fail: |
2434 | Serge | 1321 | stdcall free_kernel_space, [buf_ptr] |
1322 | xor eax, eax |
||
1323 | pop ebx |
||
520 | serge | 1324 | .fail: |
2434 | Serge | 1325 | ret |
520 | serge | 1326 | endp |
2442 | Serge | 1327 | |
1328 | |||
1329 | align 4 |
||
2467 | Serge | 1330 | proc print_mem |
2442 | Serge | 1331 | mov edi, BOOT_VAR + 0x9104 |
1332 | mov ecx, [edi-4] |
||
1333 | test ecx, ecx |
||
3908 | Serge | 1334 | jz .done |
2442 | Serge | 1335 | |
1336 | @@: |
||
3908 | Serge | 1337 | mov eax, [edi] |
1338 | mov edx, [edi+4] |
||
1339 | add eax, [edi+8] |
||
1340 | adc edx, [edi+12] |
||
2442 | Serge | 1341 | |
1342 | DEBUGF 1, "K : E820 %x%x - %x%x type %d\n", \ |
||
1343 | [edi+4], [edi],\ |
||
1344 | edx, eax, [edi+16] |
||
1345 | add edi, 20 |
||
1346 | dec ecx |
||
1347 | jnz @b |
||
1348 | .done: |
||
1349 | ret |
||
2467 | Serge | 1350 | endp0>>=> |