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| 3 | ;; Copyright (C) KolibriOS team 2007-2008. All rights reserved. ;; |
3 | ;; Copyright (C) KolibriOS team 2007-2008. 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 | ||
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| 8 | $Revision: 855 $ |
8 | $Revision: 864 $ |
| 9 | 9 | ||
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| 10 | ; Virtual-8086 mode manager |
10 | ; Virtual-8086 mode manager |
| Line 47... | Line 47... | ||
| 47 | ; First is main page directory for V86 mode. |
47 | ; First is main page directory for V86 mode. |
| 48 | ; Second page: |
48 | ; Second page: |
| 49 | ; first half (0x800 bytes) is page table for addresses 0 - 0x100000, |
49 | ; first half (0x800 bytes) is page table for addresses 0 - 0x100000, |
| 50 | ; second half is for V86-to-linear translation. |
50 | ; second half is for V86-to-linear translation. |
| 51 | ; Third and fourth are for I/O permission map. |
51 | ; Third and fourth are for I/O permission map. |
| 52 | push 8000h ; blocks less than 8 pages are discontinuous |
52 | mov ecx, 2 |
| 53 | call kernel_alloc |
53 | call @core_alloc@4 |
| 54 | test eax, eax |
54 | test eax, eax |
| 55 | jz .fail2 |
55 | jz .fail2 |
| - | 56 | add eax, OS_BASE |
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| 56 | mov [ebx+V86_machine.pagedir], eax |
57 | mov [ebx+V86_machine.pagedir], eax |
| 57 | push edi eax |
58 | push edi eax |
| 58 | mov edi, eax |
59 | mov edi, eax |
| 59 | add eax, 1800h |
60 | add eax, 1800h |
| 60 | mov [ebx+V86_machine.pages], eax |
61 | mov [ebx+V86_machine.pages], eax |