| 31,27 → 31,9 |
|---|
| |
| |
| align 4 |
| proc free_page |
| free_page: |
| |
| ;arg: eax page address |
| ; pushfd |
| ; cli |
| ; shr eax, 12 ;page index |
| ; bts dword [sys_pgmap], eax ;that's all! |
| ; cmc |
| ; adc [pg_data.pages_free], 0 |
| ; shr eax, 3 |
| ; and eax, not 3 ;dword offset from page_map |
| ; add eax, sys_pgmap |
| ; cmp [page_start], eax |
| ; ja @f |
| ; popfd |
| ; ret |
| ;@@: |
| ; mov [page_start], eax |
| ; popfd |
| ret |
| endp |
| |
| proc map_io_mem stdcall, base:dword, size:dword, flags:dword |
| |
| 145,9 → 127,6 |
|---|
| shr esi, 10 |
| add esi, page_tabs |
| |
| ; mov ebp, [pg_data.pages_free] |
| ; mov ebx, [page_start] |
| ; mov edx, sys_pgmap |
| @@: |
| xor eax, eax |
| xchg eax, [esi] |
| 154,27 → 133,11 |
|---|
| push eax |
| invlpg [edi] |
| pop eax |
| |
| ; test eax, 1 |
| ; jz .next |
| |
| ; shr eax, 12 |
| ; bts [edx], eax |
| ; cmc |
| ; adc ebp, 0 |
| ; shr eax, 3 |
| ; and eax, -4 |
| ; add eax, edx |
| ; cmp eax, ebx |
| ; jae .next |
| |
| ; mov ebx, eax |
| .next: |
| add edi, 0x1000 |
| add esi, 4 |
| dec ecx |
| jnz @B |
| ; mov [pg_data.pages_free], ebp |
| and [pg_data.pg_mutex],0 |
| popad |
| ret |
| 440,8 → 403,6 |
|---|
| mov ebx, [.err_addr] |
| mov eax, [.err_code] |
| |
| ; xchg bx, bx |
| |
| cmp ebx, HEAP_BASE |
| jb .user_space ;ñòðàíèöà â ïàìÿòè ïðèëîæåíèÿ ; |
| |
| 451,15 → 412,19 |
|---|
| cmp ebx, page_tabs |
| jb .lfb |
| |
| cmp ebx, heap_tabs |
| jb .user_tabs |
| |
| cmp ebx, OS_BASE |
| jb .core_tabs |
| jb .heap_tab |
| |
| jmp .core_tabs |
| |
| ; cmp ebx, kernel_tabs |
| ; jb .alloc;.app_tabs ;òàáëèöû ñòðàíèö ïðèëîæåíèÿ ; |
| ;ïðîñòî ñîçäàäèì îäíó |
| |
| |
| |
| .lfb: |
| shr ebx, 22 |
| mov edx, [_sys_pdbr + ebx*4] |
| 466,8 → 431,28 |
|---|
| mov [master_tab + ebx*4], edx |
| jmp .exit |
| |
| .core_tabs: |
| .user_tabs: |
| shr ebx, 12 |
| and ebx, 0x3FF |
| mov edx, [master_tab + ebx*4] |
| test edx, PG_MAP |
| jnz .fail |
| |
| call _alloc_page |
| test eax, eax |
| jz .fail |
| |
| lea edx, [eax + PG_UW] |
| lea edi, [eax + OS_BASE] |
| mov ecx, 1024 |
| xor eax, eax |
| cld |
| rep stosd |
| |
| mov [master_tab + ebx*4], edx |
| jmp .exit |
| |
| .heap_tab: |
| shr ebx, 12 |
| and ebx, 0x3FF |
| mov edx, [master_tab + ebx*4] |
| 474,18 → 459,20 |
|---|
| test edx, PG_MAP |
| jz .check_ptab ;òàáëèöà ñòðàíèö íå ñîçäàíà |
| |
| jmp .fail |
| |
| |
| align 4 |
| .kernel_heap: |
| |
| mov ecx, ebx |
| shr ebx, 22 |
| mov edx, [master_tab + ebx*4] |
| test edx, PG_MAP |
| jz .check_ptab ;òàáëèöà ñòðàíèö íå ñîçäàíà |
| |
| shr ecx, 12 |
| mov eax, [page_tabs+ecx*4] |
| |
| jmp .fail |
| |
| .check_ptab: |
| mov edx, [_sys_pdbr + ebx*4] |
| test edx, PG_MAP |