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| - | 1 | ; $Revision$ |
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| 1 | align 4 |
2 | |
| 2 | proc alloc_page |
3 | align 4 |
| Line 3... | Line 4... | ||
| 3 | 4 | proc alloc_page |
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| Line 542... | Line 543... | ||
| 542 | jnz .fail ;óñòàíîâëåí çàðåçåðâèðîâàííûé áèò |
543 | test eax, 8 |
| 543 | ;â òàáëèöàõ ñòðàíèö. äîáàâëåíî â P4/Xeon |
544 | jnz .fail ;óñòàíîâëåí çàðåçåðâèðîâàííûé áèò |
| 544 | 545 | ;â òàáëèöàõ ñòðàíèö. äîáàâëåíî â P4/Xeon |
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| Line 545... | Line 546... | ||
| 545 | ;ïîïûòêà çàïèñè â çàùèù¸ííóþ ñòðàíèöó ÿäðà |
546 | |
| - | 547 | ;ïîïûòêà çàïèñè â çàùèù¸ííóþ ñòðàíèöó ÿäðà |
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| - | 548 | ||
| - | 549 | cmp ebx, tss._io_map_0 |
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| - | 550 | jb .fail |
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| - | 551 | ||
| - | 552 | cmp ebx, tss._io_map_0+8192 |
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| - | 553 | jae .fail |
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| - | 554 | ||
| - | 555 | ; io permission map |
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| - | 556 | ; copy-on-write protection |
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| - | 557 | ||
| - | 558 | call alloc_page |
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| - | 559 | and eax, eax |
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| - | 560 | jz .fail |
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| - | 561 | ||
| - | 562 | push eax |
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| - | 563 | stdcall map_page,[ebp-4],eax,dword PG_SW |
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| - | 564 | pop eax |
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| - | 565 | mov edi, [.err_addr] |
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| - | 566 | and edi, -4096 |
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| - | 567 | lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
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| - | 568 | ||
| - | 569 | mov ebx, esi |
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| - | 570 | shr ebx, 12 |
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| - | 571 | mov edx, [current_slot] |
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| - | 572 | or eax, PG_SW |
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| - | 573 | mov [edx+APPDATA.io_map+ebx*4], eax |
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| - | 574 | ||
| - | 575 | add esi, [default_io_map] |
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| - | 576 | mov ecx, 4096/4 |
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| - | 577 | cld |
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| - | 578 | rep movsd |
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| - | 579 | jmp .exit |
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| - | 580 | ||
| 546 | ;íå îáðàáàòûâàåì. Îøèáêà |
581 | |
| Line 547... | Line 582... | ||
| 547 | 582 | ;íå îáðàáàòûâàåì. Îøèáêà |
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| 548 | .core_tabs: |
583 | |
| 549 | .fail: |
584 | .core_tabs: |