| 321,8 → 321,17 |
|---|
| cmp dword [LFBAddress], -1 |
| jne @f |
| mov [BOOT_VAR+0x901c],byte 2 |
| stdcall kernel_alloc, 0x280000 |
| mov [LFBAddress], eax |
| stdcall alloc_pages, (0x280000 / 4096) |
| |
| push eax |
| call alloc_page |
| stdcall map_page_table, LFB_BASE, eax |
| pop eax |
| or eax, PG_UW |
| mov ebx, LFB_BASE |
| mov ecx, 0x280000 / 4096 |
| call commit_pages |
| mov [LFBAddress], dword LFB_BASE |
| ret |
| @@: |
| test [SCR_MODE],word 0100000000000000b |
| 334,7 → 343,7 |
|---|
| |
| mov edx, LFB_BASE |
| mov esi, [LFBAddress] |
| mov edi, 0x00800000 |
| mov edi, 0x00C00000 |
| mov dword [exp_lfb+4], edx |
| |
| shr edi, 12 |
| 558,14 → 567,6 |
|---|
| push ebx ;that is locals: .err_addr = cr2 |
| inc [pg_data.pages_faults] |
| |
| ; push eax |
| ; push edx |
| ; mov edx, 0x400 ;bochs |
| ; mov al,0xff ;bochs |
| ; out dx, al ;bochs |
| ; pop edx |
| ; pop eax |
| |
| mov eax, [pf_err_code] |
| |
| cmp ebx, OS_BASE ;ebx == .err_addr |
| 592,6 → 593,11 |
|---|
| pop ebx ;restore exception number (#PF) |
| ret |
| |
| ; xchg bx, bx |
| ; add esp,12 ;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
| ; restore_ring3_context |
| ; iretd |
| |
| .user_space: |
| test eax, PG_MAP |
| jnz .err_access ;Ñòðàíèöà ïðèñóòñòâóåò |