| 293,79 → 293,11 |
|---|
| MEM_WC equ 1 ;write combined memory |
| MEM_UC equ 0 ;uncached memory |
| |
| align 4 |
| init_mem: |
| |
| mov ecx, [BOOT_VAR + 0x9100] |
| mov esi, BOOT_VAR + 0x9104 |
| xor eax, eax |
| @@: |
| cmp dword [esi+16], 1 |
| jne .next |
| mov edx, [esi+8] |
| cmp eax, [esi+8] |
| ja .next |
| include 'core/mm.asm' |
| |
| mov eax, [esi+8] |
| .next: |
| add esi, 20 |
| loop @B |
| |
| and eax, -4096 |
| |
| mov [MEM_AMOUNT], eax |
| mov [pg_data.mem_amount], eax |
| |
| shr eax, 12 |
| mov edx, eax |
| mov [pg_data.pages_count], eax |
| shr eax, 3 |
| and eax, -4 |
| mov [pg_data.pagemap_size], eax |
| mov ecx, eax |
| fastcall _balloc |
| ret |
| |
| align 4 |
| init_page_map: |
| |
| mov edi, sys_pgmap |
| mov ecx, [pg_data.pagemap_size] |
| shr ecx, 2 |
| or eax, -1 |
| cld |
| rep stosd |
| |
| xchg bx, bx |
| |
| mov ecx, [_last_page] |
| mov edx, [pg_data.pages_count] |
| shr ecx, 12 |
| sub edx, ecx |
| mov [pg_data.pages_free], edx |
| |
| mov edi, sys_pgmap |
| mov ebx, ecx |
| shr ecx, 5 |
| xor eax, eax |
| rep stosd |
| |
| not eax |
| mov ecx, ebx |
| and ecx, 31 |
| shl eax, cl |
| mov [edi], eax |
| mov [page_start], edi; |
| |
| mov ebx, sys_pgmap |
| add ebx, [pg_data.pagemap_size] |
| mov [page_end], ebx |
| |
| mov [pg_data.pg_mutex], 0 |
| ret |
| |
| |
| align 4 |
| high_code: |
| mov ax,os_stack |
| mov bx,app_data |
| 398,8 → 330,6 |
|---|
| |
| ; MEMORY MODEL |
| |
| call init_mem |
| |
| mov ecx, 1280*1024 |
| fastcall _balloc |
| mov [_display_data], eax |
| 437,9 → 367,9 |
|---|
| |
| call init_kernel_heap ; FIXME initialize heap after pager |
| |
| call init_page_map |
| call _init_mm |
| mov [pg_data.pg_mutex], 0 |
| |
| |
| ; SAVE REAL MODE VARIABLES |
| mov ax, [BOOT_VAR + 0x9031] |
| mov [IDEContrRegsBaseAddr], ax |