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| 3 | ;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;; |
| 4 | ;; Distributed under terms of the GNU General Public License ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
| 5 | ;; ;; |
5 | ;; ;; |
| 6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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| 7 | 7 | ||
| Line 8... | Line 8... | ||
| 8 | $Revision: 1103 $ |
8 | $Revision: 1105 $ |
| 9 | 9 | ||
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| 545 | and eax, 0xFFFFF000 |
545 | and eax, 0xFFFFF000 |
| 546 | ret |
546 | ret |
| Line 547... | Line 547... | ||
| 547 | 547 | ||
| 548 | 548 | ||
| 549 | align 4 |
549 | align 4 |
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| 550 | ; Now it is called from sys32::exc_c (see stack frame there) |
550 | ; Now it is called from core/sys32::exc_c (see stack frame there) |
| Line -... | Line 551... | ||
| - | 551 | proc page_fault_handler |
|
| 551 | proc page_fault_handler |
552 | |
| 552 | 553 | .err_addr equ ebp-4 |
|
| 553 | .err_addr equ ebp-4 |
554 | |
| 554 | 555 | push ebx ;save exception number (#PF) |
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| Line 586... | Line 587... | ||
| 586 | jmp .fail |
587 | jmp .fail |
| 587 | end if |
588 | end if |
| 588 | .core_tabs: |
589 | .core_tabs: |
| 589 | .fail: ;simply return to caller |
590 | .fail: ;simply return to caller |
| 590 | mov esp, ebp |
591 | mov esp, ebp |
| 591 | push 14 ;#PF |
592 | pop ebx ;restore exception number (#PF) |
| 592 | pop ebx |
- | |
| 593 | ret |
593 | ret |
| Line 594... | Line 594... | ||
| 594 | 594 | ||
| 595 | .user_space: |
595 | .user_space: |
| 596 | test eax, PG_MAP |
596 | test eax, PG_MAP |
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| 621 | mov ecx, 1024 |
621 | mov ecx, 1024 |
| 622 | xor eax, eax |
622 | xor eax, eax |
| 623 | ;cld ;caller is duty for this |
623 | ;cld ;caller is duty for this |
| 624 | rep stosd |
624 | rep stosd |
| 625 | .exit: ;iret with repeat fault instruction |
625 | .exit: ;iret with repeat fault instruction |
| 626 | add esp,8 ; clear in stack: locals(.err_addr) + ret_to_caller |
626 | add esp,12 ;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
| 627 | restore_ring3_context |
627 | restore_ring3_context |
| 628 | iretd |
628 | iretd |
| Line 629... | Line 629... | ||
| 629 | 629 | ||
| 630 | .err_access = .fail |
630 | .err_access = .fail |