Rev 10002 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
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| 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 2 | ;; ;; |
2 | ;; ;; |
| 3 | ;; Copyright (C) KolibriOS team 2004-2022. All rights reserved. ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2024. 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 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| Line 7... | Line -... | ||
| 7 | - | ||
| 8 | $Revision: 10002 $ |
- | |
| Line 9... | Line 7... | ||
| 9 | 7 | ||
| 10 | 8 | ||
| Line 11... | Line 9... | ||
| 11 | align 4 |
9 | align 4 |
| Line 595... | Line 593... | ||
| 595 | ;incorrect address in program |
593 | ;incorrect address in program |
| Line 596... | Line 594... | ||
| 596 | 594 | ||
| 597 | mov eax, [page_tabs + ebx*4] |
595 | mov eax, [page_tabs + ebx*4] |
| 598 | test eax, 2 |
596 | test eax, 2 |
| 599 | jz .fail ;address is not reserved for usage. Error |
597 | jz .fail ;address is not reserved for usage. Error |
| 600 | 598 | ||
| 601 | .alloc: |
599 | .alloc: |
| 602 | call alloc_page |
600 | call alloc_page |
| 603 | test eax, eax |
601 | test eax, eax |
| Line 654... | Line 652... | ||
| 654 | test eax, PG_READ |
652 | test eax, PG_READ |
| 655 | jz .fail ;page does not present |
653 | jz .fail ;page does not present |
| Line 656... | Line 654... | ||
| 656 | 654 | ||
| 657 | test eax, 12 ;U/S (+below) |
655 | test eax, 12 ;U/S (+below) |
| 658 | jnz .fail ;application requested kernel memory |
656 | jnz .fail ;application requested kernel memory |
| 659 | 657 | ||
| 660 | ;test eax, 8 |
658 | ;test eax, 8 |
| 661 | ;jnz .fail ;the reserved bit is set in page tables. Added in P4/Xeon |
659 | ;jnz .fail ;the reserved bit is set in page tables. Added in P4/Xeon |
| Line 662... | Line 660... | ||
| 662 | 660 | ||
| Line 663... | Line 661... | ||
| 663 | 661 | ||
| 664 | ;an attempt to write to a protected kernel page |
662 | ;an attempt to write to a protected kernel page |