Subversion Repositories Kolibri OS

proc mem_test

           mov eax, cr0

           or eax, 0x60000000   ;disable caching

           mov cr0, eax

           wbinvd               ;invalidate cache

           mov ebx, 'TEST'

@@:

           add edi, 0x400000

           xchg ebx, dword [edi]

           cmp dword [edi], 'TEST'

           xchg ebx, dword [edi]

           je @b

           mov cr0, eax

           mov eax, edi

           ret

endp

proc init_memEx

           xor eax, eax

           mov edi, sys_pgdir

           mov ecx, 2048

           rep stosd

           jnc .no_PSE

           or ebx, CR4_PSE

           mov eax, PG_LARGE+PG_SW

           bt [cpu_caps], CAPS_PGE

           jnc @F

           or eax, PG_GLOBAL

           or ebx, CR4_PGE

@@:

           mov dword [sys_pgdir], eax

           add eax, 0x00400000

           mov dword [sys_pgdir+4], eax

           add eax, 0x00400000

           mov dword [sys_pgdir+8], eax

           add eax, 0x00400000

           mov dword [sys_pgdir+12], eax

           mov dword [sys_master_tab+0x600], sys_master_tab+PG_SW

           sub ecx, 4

           mov eax, tmp_page_tab+PG_SW

           mov edi, sys_pgdir+16

           mov esi, sys_master_tab+16

.no_PSE:

           mov eax, PG_SW

           mov esi, tmp_page_tab

           mov ecx, 4096/4      ;0x0 - 0x00FFFFFF

.map_low:

           mov [esi], eax

           add eax, 0x1000

           mov [esi+4], eax

           add eax, 0x1000

           mov [esi+8], eax

           add eax, 0x1000

           mov [esi+12], eax

           add eax, 0x1000

           add esi, 16

           dec ecx

           jnz .map_low            ;ÿäðî

           mov eax, tmp_page_tab+PG_SW

           mov edi, sys_pgdir

           mov esi, sys_master_tab

           mov [esi], eax

           add eax, 0x1000

           add edi, 4

           add esi, 4

           dec ecx

           jnz .map_kernel_tabs

           bt [cpu_caps], CAPS_PSE

           jc @F

           add edi, 4096*4      ;skip low kernel memory

@@:

           mov ecx, [pg_data.kernel_tables]

           sub ecx, 4

           shl ecx, 10

           xor eax, eax

           cld

           rep stosd

           mov dword [sys_master_tab+0x600], sys_master_tab+PG_SW

           ret

endp

;proc init_mem

;

;           xor eax, eax

;           mov edi, sys_pgdir

;           mov ecx, 2048

;           rep stosd

;

;           bt [cpu_caps], CAPS_PSE

;           jc .use_PSE

;

;           mov eax, PG_SW

;           mov esi, tmp_page_tab

;           mov ecx, 4096/4      ;0x0 - 0x00FFFFFF

;

;.map_low:

;           mov [esi], eax

;           add eax, 0x1000

;           mov [esi+4], eax

;           add eax, 0x1000

;           mov [esi+8], eax

;           add eax, 0x1000

;           mov [esi+12], eax

;           add eax, 0x1000

;           add esi, 16

;           dec ecx

;           jnz .map_low            ;ÿäðî

;           mov ecx, 4

;           xor ebx, ebx

;           mov [sys_pgdir+ebx], eax

;           mov [sys_master_tab+ebx], eax

;           add eax, 0x1000

;           add ebx, 4

;           dec ecx

;           jnz .map_page_tables

;           mov dword [sys_master_tab+0x600], sys_master_tab+PG_SW

;           mov ebx, cr4

;           or ebx, CR4_PSE

;           mov eax, PG_LARGE+PG_SW

;           bt [cpu_caps], CAPS_PGE

;           jnc @F

;           or eax, PG_GLOBAL

;           or ebx, CR4_PGE

;@@:

;           mov dword [sys_pgdir], eax

;           add eax, 0x00400000

;           mov dword [sys_pgdir+4], eax

;           add eax, 0x00400000

;           mov dword [sys_pgdir+8], eax

;           add eax, 0x00400000

;           mov dword [sys_pgdir+12], eax

;

;           mov dword [sys_pgdir+0x600], sys_master_tab+PG_SW

;           mov dword [sys_master_tab+0x600], sys_master_tab+PG_SW

;           ret

;endp

proc init_page_map

           mov edi, sys_pgmap

           mov ecx, 512/4

           xor eax,eax

           cld

           rep stosd

           mov ecx, [pg_data.pagemap_size]

           sub ecx, 512

           shr ecx, 2

           rep stosd

           mov edx, [pg_data.pages_count]

           mov ecx, [pg_data.kernel_tables]

           bt [cpu_caps], CAPS_PSE

           jnc @f

           sub ecx, 4

@@:

           sub edx, 4096

           sub edx, ecx

           mov [pg_data.pages_free], edx

           mov ebx, ecx

           shr ecx, 5

           rep stosd

           mov ecx, ebx

           and ecx, 31

           shl eax, cl

           stosd

           mov ebx, sys_pgmap

           add ebx, [pg_data.pagemap_size]

           mov [page_end], ebx

endp

;proc init_pg_mem

;

;           mov edi, sys_pgmap

;           mov ecx, 512/4

;           xor eax,eax

;           cld

;           rep stosd

;

;           not eax

;           mov ecx, [pg_data.pagemap_size]

;           sub ecx, 512

;           shr ecx, 2

;           rep stosd

;

;           shl eax, PAGES_USED

;           mov [sys_pgmap+512], eax

;

;           mov [page_start], sys_pgmap+512

;           mov ebx, sys_pgmap

;           add ebx, [pg_data.pagemap_size]

;           mov [page_end], ebx

;           mov eax, [pg_data.pages_count]

;           sub eax, 4096+PAGES_USED

;           mov [pg_data.pages_free], eax

;

;           mov [pg_data.pages_faults], 0

;

;           mov edi, OS_BASE+0x01000000

;           mov esi, [pg_data.kernel_tables]

;           sub esi, 4

;           ja @f

;           mov esi, 1

;@@:

;           call alloc_page

;           stdcall map_page_table, sys_pgdir, edi, eax

;           add edi, 0x00400000

;           dec esi

;           jnz @B

;

;           mov ecx, [pg_data.kernel_tables]

;           sub ecx, 4

;           shl ecx, 10

;           mov edi, OS_BASE+0x01000000

;           shr edi, 10

;           add edi, pages_tab

;           xor eax, eax

;           cld

;           rep stosd

;

;           mov eax, cr3

;           mov cr3, eax

;