| 1,3 → 1,4 |
|---|
| ; $Revision$ |
| |
| align 4 |
| proc alloc_page |
| 544,6 → 545,40 |
|---|
| ;â òàáëèöàõ ñòðàíèö. äîáàâëåíî â P4/Xeon |
| |
| ;ïîïûòêà çàïèñè â çàùèù¸ííóþ ñòðàíèöó ÿäðà |
| |
| cmp ebx, tss._io_map_0 |
| jb .fail |
| |
| cmp ebx, tss._io_map_0+8192 |
| jae .fail |
| |
| ; io permission map |
| ; copy-on-write protection |
| |
| call alloc_page |
| and eax, eax |
| jz .fail |
| |
| push eax |
| stdcall map_page,[ebp-4],eax,dword PG_SW |
| pop eax |
| mov edi, [.err_addr] |
| and edi, -4096 |
| lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
| |
| mov ebx, esi |
| shr ebx, 12 |
| mov edx, [current_slot] |
| or eax, PG_SW |
| mov [edx+APPDATA.io_map+ebx*4], eax |
| |
| add esi, [default_io_map] |
| mov ecx, 4096/4 |
| cld |
| rep movsd |
| jmp .exit |
| |
| |
| ;íå îáðàáàòûâàåì. Îøèáêà |
| |
| .core_tabs: |