forked from KolibriOS/kolibrios
1195 lines
27 KiB
PHP
1195 lines
27 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;; ;;
|
||
;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
|
||
;; Distributed under terms of the GNU General Public License ;;
|
||
;; ;;
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
|
||
$Revision$
|
||
|
||
|
||
align 4
|
||
proc alloc_page
|
||
|
||
pushfd
|
||
cli
|
||
push ebx
|
||
mov ebx, [page_start]
|
||
mov ecx, [page_end]
|
||
.l1:
|
||
bsf eax,[ebx];
|
||
jnz .found
|
||
add ebx,4
|
||
cmp ebx, ecx
|
||
jb .l1
|
||
pop ebx
|
||
popfd
|
||
xor eax,eax
|
||
ret
|
||
.found:
|
||
btr [ebx], eax
|
||
mov [page_start],ebx
|
||
sub ebx, sys_pgmap
|
||
lea eax, [eax+ebx*8]
|
||
shl eax, 12
|
||
dec [pg_data.pages_free]
|
||
pop ebx
|
||
popfd
|
||
ret
|
||
endp
|
||
|
||
align 4
|
||
proc alloc_pages stdcall, count:dword
|
||
pushfd
|
||
push ebx
|
||
push edi
|
||
cli
|
||
mov eax, [count]
|
||
add eax, 7
|
||
shr eax, 3
|
||
mov [count], eax
|
||
cmp eax, [pg_data.pages_free]
|
||
ja .fail
|
||
|
||
mov ecx, [page_start]
|
||
mov ebx, [page_end]
|
||
.find:
|
||
mov edx, [count]
|
||
mov edi, ecx
|
||
.match:
|
||
cmp byte [ecx], 0xFF
|
||
jne .next
|
||
dec edx
|
||
jz .ok
|
||
inc ecx
|
||
cmp ecx,ebx
|
||
jb .match
|
||
.fail:
|
||
xor eax, eax
|
||
pop edi
|
||
pop ebx
|
||
popfd
|
||
ret
|
||
.next:
|
||
inc ecx
|
||
cmp ecx, ebx
|
||
jb .find
|
||
pop edi
|
||
pop ebx
|
||
popfd
|
||
xor eax, eax
|
||
ret
|
||
.ok:
|
||
sub ecx, edi
|
||
inc ecx
|
||
push esi
|
||
mov esi, edi
|
||
xor eax, eax
|
||
rep stosb
|
||
sub esi, sys_pgmap
|
||
shl esi, 3+12
|
||
mov eax, esi
|
||
mov ebx, [count]
|
||
shl ebx, 3
|
||
sub [pg_data.pages_free], ebx
|
||
pop esi
|
||
pop edi
|
||
pop ebx
|
||
popfd
|
||
ret
|
||
endp
|
||
|
||
align 4
|
||
proc map_page stdcall,lin_addr:dword,phis_addr:dword,flags:dword
|
||
push ebx
|
||
mov eax, [phis_addr]
|
||
and eax, not 0xFFF
|
||
or eax, [flags]
|
||
mov ebx, [lin_addr]
|
||
shr ebx, 12
|
||
mov [page_tabs+ebx*4], eax
|
||
mov eax, [lin_addr]
|
||
invlpg [eax]
|
||
pop ebx
|
||
ret
|
||
endp
|
||
|
||
align 4
|
||
map_space: ;not implemented
|
||
|
||
|
||
ret
|
||
|
||
|
||
align 4
|
||
proc 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
|
||
|
||
; param
|
||
; eax= page base + page flags
|
||
; ebx= liear address
|
||
; ecx= count
|
||
|
||
align 4
|
||
commit_pages:
|
||
|
||
test ecx, ecx
|
||
jz .fail
|
||
|
||
mov edi, ebx
|
||
mov ebx, pg_data.pg_mutex
|
||
call wait_mutex ;ebx
|
||
|
||
mov edx, 0x1000
|
||
mov ebx, edi
|
||
shr ebx, 12
|
||
@@:
|
||
mov [page_tabs+ebx*4], eax
|
||
invlpg [edi]
|
||
add edi, edx
|
||
add eax, edx
|
||
inc ebx
|
||
dec ecx
|
||
jnz @B
|
||
mov [pg_data.pg_mutex],ecx
|
||
.fail:
|
||
ret
|
||
|
||
|
||
; param
|
||
; eax= base
|
||
; ecx= count
|
||
|
||
align 4
|
||
release_pages:
|
||
|
||
pushad
|
||
mov ebx, pg_data.pg_mutex
|
||
call wait_mutex ;ebx
|
||
|
||
mov esi, eax
|
||
mov edi, eax
|
||
|
||
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]
|
||
invlpg [edi]
|
||
|
||
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
|
||
|
||
align 4
|
||
proc map_page_table stdcall, lin_addr:dword, phis_addr:dword
|
||
push ebx
|
||
mov ebx, [lin_addr]
|
||
shr ebx, 22
|
||
mov eax, [phis_addr]
|
||
and eax, not 0xFFF
|
||
or eax, PG_UW ;+PG_NOCACHE
|
||
mov dword [master_tab+ebx*4], eax
|
||
mov eax, [lin_addr]
|
||
shr eax, 10
|
||
add eax, page_tabs
|
||
invlpg [eax]
|
||
pop ebx
|
||
ret
|
||
endp
|
||
|
||
align 4
|
||
proc init_LFB
|
||
locals
|
||
pg_count dd ?
|
||
endl
|
||
|
||
cmp dword [LFBAddress], -1
|
||
jne @f
|
||
mov [BOOT_VAR+0x901c],byte 2
|
||
stdcall kernel_alloc, 0x280000
|
||
mov [LFBAddress], eax
|
||
ret
|
||
@@:
|
||
test [SCR_MODE],word 0100000000000000b
|
||
jnz @f
|
||
mov [BOOT_VAR+0x901c],byte 2
|
||
ret
|
||
@@:
|
||
call init_mtrr
|
||
|
||
mov edx, LFB_BASE
|
||
mov esi, [LFBAddress]
|
||
mov edi, 0x00800000
|
||
mov dword [exp_lfb+4], edx
|
||
|
||
shr edi, 12
|
||
mov [pg_count], edi
|
||
shr edi, 10
|
||
|
||
bt [cpu_caps], CAPS_PSE
|
||
jnc .map_page_tables
|
||
or esi, PG_LARGE+PG_UW
|
||
mov edx, sys_pgdir+(LFB_BASE shr 20)
|
||
@@:
|
||
mov [edx], esi
|
||
add edx, 4
|
||
add esi, 0x00400000
|
||
dec edi
|
||
jnz @B
|
||
|
||
bt [cpu_caps], CAPS_PGE
|
||
jnc @F
|
||
or dword [sys_pgdir+(LFB_BASE shr 20)], PG_GLOBAL
|
||
@@:
|
||
mov dword [LFBAddress], LFB_BASE
|
||
mov eax, cr3 ;flush TLB
|
||
mov cr3, eax
|
||
ret
|
||
|
||
.map_page_tables:
|
||
|
||
@@:
|
||
call alloc_page
|
||
stdcall map_page_table, edx, eax
|
||
add edx, 0x00400000
|
||
dec edi
|
||
jnz @B
|
||
|
||
mov eax, [LFBAddress]
|
||
mov edi, page_tabs + (LFB_BASE shr 10)
|
||
or eax, PG_UW
|
||
mov ecx, [pg_count]
|
||
cld
|
||
@@:
|
||
stosd
|
||
add eax, 0x1000
|
||
dec ecx
|
||
jnz @B
|
||
|
||
mov dword [LFBAddress], LFB_BASE
|
||
mov eax, cr3 ;flush TLB
|
||
mov cr3, eax
|
||
|
||
ret
|
||
endp
|
||
|
||
align 4
|
||
proc new_mem_resize stdcall, new_size:dword
|
||
|
||
mov ebx, pg_data.pg_mutex
|
||
call wait_mutex ;ebx
|
||
|
||
mov edi, [new_size]
|
||
add edi,4095
|
||
and edi,not 4095
|
||
mov [new_size], edi
|
||
|
||
mov edx,[current_slot]
|
||
cmp [edx+APPDATA.heap_base],0
|
||
jne .exit
|
||
|
||
mov esi, [edx+APPDATA.mem_size]
|
||
add esi, 4095
|
||
and esi, not 4095
|
||
|
||
cmp edi, esi
|
||
jae .expand
|
||
|
||
shr edi, 12
|
||
shr esi, 12
|
||
@@:
|
||
mov eax, [app_page_tabs+edi*4]
|
||
test eax, 1
|
||
jz .next
|
||
mov dword [app_page_tabs+edi*4], 2
|
||
mov ebx, edi
|
||
shl ebx, 12
|
||
invlpg [ebx]
|
||
call free_page
|
||
|
||
.next: add edi, 1
|
||
cmp edi, esi
|
||
jb @B
|
||
|
||
.update_size:
|
||
mov ebx, [new_size]
|
||
call update_mem_size
|
||
|
||
xor eax, eax
|
||
dec [pg_data.pg_mutex]
|
||
ret
|
||
.expand:
|
||
|
||
push esi
|
||
push edi
|
||
|
||
add edi, 0x3FFFFF
|
||
and edi, not(0x3FFFFF)
|
||
add esi, 0x3FFFFF
|
||
and esi, not(0x3FFFFF)
|
||
|
||
cmp esi, edi
|
||
jae .grow
|
||
|
||
xchg esi, edi
|
||
|
||
@@:
|
||
call alloc_page
|
||
test eax, eax
|
||
jz .exit
|
||
|
||
stdcall map_page_table, edi, eax
|
||
|
||
push edi
|
||
shr edi, 10
|
||
add edi, page_tabs
|
||
mov ecx, 1024
|
||
xor eax, eax
|
||
cld
|
||
rep stosd
|
||
pop edi
|
||
|
||
add edi, 0x00400000
|
||
cmp edi, esi
|
||
jb @B
|
||
.grow:
|
||
pop edi
|
||
pop esi
|
||
@@:
|
||
call alloc_page
|
||
test eax, eax
|
||
jz .exit
|
||
stdcall map_page,esi,eax,dword PG_UW
|
||
|
||
push edi
|
||
mov edi, esi
|
||
xor eax, eax
|
||
mov ecx, 1024
|
||
cld
|
||
rep stosd
|
||
pop edi
|
||
|
||
add esi, 0x1000
|
||
cmp esi, edi
|
||
jb @B
|
||
|
||
jmp .update_size
|
||
.exit:
|
||
xor eax, eax
|
||
inc eax
|
||
dec [pg_data.pg_mutex]
|
||
ret
|
||
endp
|
||
|
||
update_mem_size:
|
||
; in: edx = slot base
|
||
; ebx = new memory size
|
||
; destroys eax,ecx,edx
|
||
|
||
mov [APPDATA.mem_size+edx],ebx
|
||
;search threads and update
|
||
;application memory size infomation
|
||
mov ecx,[APPDATA.dir_table+edx]
|
||
mov eax,2
|
||
|
||
.search_threads:
|
||
;eax = current slot
|
||
;ebx = new memory size
|
||
;ecx = page directory
|
||
cmp eax,[TASK_COUNT]
|
||
jg .search_threads_end
|
||
mov edx,eax
|
||
shl edx,5
|
||
cmp word [CURRENT_TASK+edx+TASKDATA.state],9 ;if slot empty?
|
||
jz .search_threads_next
|
||
shl edx,3
|
||
cmp [SLOT_BASE+edx+APPDATA.dir_table],ecx ;if it is our thread?
|
||
jnz .search_threads_next
|
||
mov [SLOT_BASE+edx+APPDATA.mem_size],ebx ;update memory size
|
||
.search_threads_next:
|
||
inc eax
|
||
jmp .search_threads
|
||
.search_threads_end:
|
||
ret
|
||
|
||
; param
|
||
; eax= linear address
|
||
;
|
||
; retval
|
||
; eax= phisical page address
|
||
|
||
align 4
|
||
get_pg_addr:
|
||
shr eax, 12
|
||
mov eax, [page_tabs+eax*4]
|
||
and eax, 0xFFFFF000
|
||
ret
|
||
|
||
|
||
align 4
|
||
proc page_fault_handler
|
||
|
||
.err_code equ ebp+32
|
||
.err_addr equ ebp-4
|
||
|
||
pushad
|
||
mov ebp, esp
|
||
mov eax, cr2
|
||
push eax
|
||
|
||
mov ax, app_data
|
||
mov ds, ax
|
||
mov es, ax
|
||
|
||
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 ebx, [.err_addr]
|
||
mov eax, [.err_code]
|
||
|
||
cmp ebx, OS_BASE
|
||
jb .user_space ;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ;
|
||
|
||
cmp ebx, page_tabs
|
||
jb .kernel_space ;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
cmp ebx, kernel_tabs
|
||
jb .alloc;.app_tabs ;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ;
|
||
;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
cmp ebx, LFB_BASE
|
||
jb .core_tabs ;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
.lfb:
|
||
;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> LFB
|
||
;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
jmp .fail
|
||
|
||
align 4
|
||
.user_space:
|
||
test eax, PG_MAP
|
||
jnz .err_access ;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ?
|
||
|
||
shr ebx, 12
|
||
mov ecx, ebx
|
||
shr ecx, 10
|
||
mov edx, [master_tab+ecx*4]
|
||
test edx, PG_MAP
|
||
jz .fail ;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
mov eax, [page_tabs+ebx*4]
|
||
test eax, 2
|
||
jz .fail ;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> ;
|
||
;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
.alloc:
|
||
call alloc_page
|
||
test eax, eax
|
||
jz .fail
|
||
|
||
stdcall map_page,[ebp-4],eax,dword PG_UW
|
||
|
||
mov edi, [ebp-4]
|
||
and edi, 0xFFFFF000
|
||
mov ecx, 1024
|
||
xor eax, eax
|
||
cld
|
||
rep stosd
|
||
.exit:
|
||
mov esp, ebp
|
||
popad
|
||
add esp, 4
|
||
iretd
|
||
|
||
.err_access:
|
||
;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
jmp .fail
|
||
|
||
.kernel_space:
|
||
test eax, PG_MAP
|
||
jz .fail ;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
test eax, 4 ;U/S
|
||
jnz .fail ;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
;<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
test eax, 8
|
||
jnz .fail ;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD>
|
||
;<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> P4/Xeon
|
||
|
||
;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
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
|
||
test 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
|
||
|
||
|
||
;<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
|
||
.core_tabs:
|
||
.fail:
|
||
mov esp, ebp
|
||
popad
|
||
add esp, 4
|
||
|
||
; iretd
|
||
|
||
save_ring3_context ;debugger support
|
||
|
||
mov bl, 14
|
||
jmp exc_c
|
||
iretd
|
||
endp
|
||
|
||
align 4
|
||
proc map_mem stdcall, lin_addr:dword,pdir:dword,\
|
||
ofs:dword,buf_size:dword
|
||
mov eax, [buf_size]
|
||
test eax, eax
|
||
jz .exit
|
||
|
||
mov eax, [pdir]
|
||
and eax, 0xFFFFF000
|
||
|
||
stdcall map_page,[ipc_pdir],eax,PG_UW
|
||
mov ebx, [ofs]
|
||
shr ebx, 22
|
||
mov esi, [ipc_pdir]
|
||
mov edi, [ipc_ptab]
|
||
mov eax, [esi+ebx*4]
|
||
and eax, 0xFFFFF000
|
||
jz .exit
|
||
stdcall map_page,edi,eax,PG_UW
|
||
; inc ebx
|
||
; add edi, 0x1000
|
||
; mov eax, [esi+ebx*4]
|
||
; test eax, eax
|
||
; jz @f
|
||
; and eax, 0xFFFFF000
|
||
; stdcall map_page, edi, eax
|
||
|
||
@@: mov edi, [lin_addr]
|
||
and edi, 0xFFFFF000
|
||
mov ecx, [buf_size]
|
||
add ecx, 4095
|
||
shr ecx, 12
|
||
inc ecx
|
||
|
||
mov edx, [ofs]
|
||
shr edx, 12
|
||
and edx, 0x3FF
|
||
mov esi, [ipc_ptab]
|
||
|
||
.map: mov eax, [esi+edx*4]
|
||
and eax, 0xFFFFF000
|
||
jz .exit
|
||
stdcall map_page,edi,eax,PG_UW
|
||
dec ecx
|
||
jz .exit
|
||
add edi, 0x1000
|
||
inc edx
|
||
cmp edx, 0x400
|
||
jnz .map
|
||
inc ebx
|
||
mov eax, [ipc_pdir]
|
||
mov eax, [eax+ebx*4]
|
||
and eax, 0xFFFFF000
|
||
jz .exit
|
||
stdcall map_page,esi,eax,PG_UW
|
||
xor edx, edx
|
||
jmp .map
|
||
|
||
.exit:
|
||
ret
|
||
endp
|
||
|
||
align 4
|
||
proc map_memEx stdcall, lin_addr:dword,pdir:dword,\
|
||
ofs:dword,buf_size:dword
|
||
mov eax, [buf_size]
|
||
test eax, eax
|
||
jz .exit
|
||
|
||
mov eax, [pdir]
|
||
and eax, 0xFFFFF000
|
||
|
||
stdcall map_page,[proc_mem_pdir],eax,dword PG_UW
|
||
mov ebx, [ofs]
|
||
shr ebx, 22
|
||
mov esi, [proc_mem_pdir]
|
||
mov edi, [proc_mem_tab]
|
||
mov eax, [esi+ebx*4]
|
||
and eax, 0xFFFFF000
|
||
test eax, eax
|
||
jz .exit
|
||
stdcall map_page,edi,eax,dword PG_UW
|
||
|
||
@@: mov edi, [lin_addr]
|
||
and edi, 0xFFFFF000
|
||
mov ecx, [buf_size]
|
||
add ecx, 4095
|
||
shr ecx, 12
|
||
inc ecx
|
||
|
||
mov edx, [ofs]
|
||
shr edx, 12
|
||
and edx, 0x3FF
|
||
mov esi, [proc_mem_tab]
|
||
|
||
.map: mov eax, [esi+edx*4]
|
||
; and eax, 0xFFFFF000
|
||
; test eax, eax
|
||
; jz .exit
|
||
stdcall map_page,edi,eax,dword PG_UW
|
||
add edi, 0x1000
|
||
inc edx
|
||
dec ecx
|
||
jnz .map
|
||
.exit:
|
||
ret
|
||
endp
|
||
|
||
|
||
|
||
|
||
sys_IPC:
|
||
;input:
|
||
; eax=1 - set ipc buffer area
|
||
; ebx=address of buffer
|
||
; ecx=size of buffer
|
||
; eax=2 - send message
|
||
; ebx=PID
|
||
; ecx=address of message
|
||
; edx=size of message
|
||
|
||
cmp eax,1
|
||
jne @f
|
||
call set_ipc_buff
|
||
mov [esp+36], eax
|
||
ret
|
||
@@:
|
||
cmp eax, 2
|
||
jne @f
|
||
stdcall sys_ipc_send, ebx, ecx, edx
|
||
mov [esp+36], eax
|
||
ret
|
||
@@:
|
||
xor eax, eax
|
||
not eax
|
||
mov [esp+36], eax
|
||
ret
|
||
|
||
align 4
|
||
proc set_ipc_buff
|
||
|
||
mov eax,[current_slot]
|
||
pushf
|
||
cli
|
||
mov [eax+APPDATA.ipc_start],ebx ;set fields in extended information area
|
||
mov [eax+APPDATA.ipc_size],ecx
|
||
|
||
add ecx, ebx
|
||
add ecx, 4095
|
||
and ecx, not 4095
|
||
|
||
.touch: mov eax, [ebx]
|
||
add ebx, 0x1000
|
||
cmp ebx, ecx
|
||
jb .touch
|
||
|
||
popf
|
||
xor eax, eax
|
||
ret
|
||
endp
|
||
|
||
proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword
|
||
locals
|
||
dst_slot dd ?
|
||
dst_offset dd ?
|
||
buf_size dd ?
|
||
used_buf dd ?
|
||
endl
|
||
|
||
pushf
|
||
cli
|
||
|
||
mov eax, [PID]
|
||
call pid_to_slot
|
||
test eax,eax
|
||
jz .no_pid
|
||
|
||
mov [dst_slot], eax
|
||
shl eax,8
|
||
mov edi,[eax+SLOT_BASE+0xa0] ;is ipc area defined?
|
||
test edi,edi
|
||
jz .no_ipc_area
|
||
|
||
mov ebx, edi
|
||
and ebx, 0xFFF
|
||
mov [dst_offset], ebx
|
||
|
||
mov esi, [eax+SLOT_BASE+0xa4]
|
||
mov [buf_size], esi
|
||
|
||
mov ecx, [ipc_tmp]
|
||
cmp esi, 0x40000-0x1000 ; size of [ipc_tmp] minus one page
|
||
jbe @f
|
||
push eax esi edi
|
||
add esi,0x1000
|
||
stdcall alloc_kernel_space,esi
|
||
mov ecx, eax
|
||
pop edi esi eax
|
||
@@:
|
||
mov [used_buf], ecx
|
||
stdcall map_mem, ecx, [SLOT_BASE+eax+0xB8],\
|
||
edi, esi
|
||
|
||
mov edi, [dst_offset]
|
||
add edi, [used_buf]
|
||
cmp dword [edi], 0
|
||
jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now
|
||
|
||
mov edx, dword [edi+4]
|
||
lea ebx, [edx+8]
|
||
add ebx, [msg_size]
|
||
cmp ebx, [buf_size]
|
||
ja .buffer_overflow ;esi<0 - not enough memory in buffer
|
||
|
||
mov dword [edi+4], ebx
|
||
mov eax,[TASK_BASE]
|
||
mov eax, [eax+0x04] ;eax - our PID
|
||
add edi, edx
|
||
mov [edi], eax
|
||
mov ecx, [msg_size]
|
||
|
||
mov [edi+4], ecx
|
||
add edi, 8
|
||
mov esi, [msg_addr]
|
||
; add esi, new_app_base
|
||
cld
|
||
rep movsb
|
||
|
||
mov ebx, [ipc_tmp]
|
||
mov edx, ebx
|
||
shr ebx, 12
|
||
xor eax, eax
|
||
mov [page_tabs+ebx*4], eax
|
||
invlpg [edx]
|
||
|
||
mov ebx, [ipc_pdir]
|
||
mov edx, ebx
|
||
shr ebx, 12
|
||
xor eax, eax
|
||
mov [page_tabs+ebx*4], eax
|
||
invlpg [edx]
|
||
|
||
mov ebx, [ipc_ptab]
|
||
mov edx, ebx
|
||
shr ebx, 12
|
||
xor eax, eax
|
||
mov [page_tabs+ebx*4], eax
|
||
invlpg [edx]
|
||
|
||
mov eax, [dst_slot]
|
||
shl eax, 8
|
||
or [eax+SLOT_BASE+0xA8],dword 0x40
|
||
cmp dword [check_idle_semaphore],20
|
||
jge .ipc_no_cis
|
||
|
||
mov dword [check_idle_semaphore],5
|
||
.ipc_no_cis:
|
||
push 0
|
||
jmp .ret
|
||
.no_pid:
|
||
popf
|
||
mov eax, 4
|
||
ret
|
||
.no_ipc_area:
|
||
popf
|
||
xor eax, eax
|
||
inc eax
|
||
ret
|
||
.ipc_blocked:
|
||
push 2
|
||
jmp .ret
|
||
.buffer_overflow:
|
||
push 3
|
||
.ret:
|
||
mov eax, [used_buf]
|
||
cmp eax, [ipc_tmp]
|
||
jz @f
|
||
stdcall free_kernel_space,eax
|
||
@@:
|
||
pop eax
|
||
popf
|
||
ret
|
||
endp
|
||
|
||
align 4
|
||
sysfn_meminfo:
|
||
|
||
; add ebx, new_app_base
|
||
cmp ebx, OS_BASE
|
||
jae .fail
|
||
|
||
mov eax, [pg_data.pages_count]
|
||
mov [ebx], eax
|
||
shl eax, 12
|
||
mov [esp+36], eax
|
||
mov ecx, [pg_data.pages_free]
|
||
mov [ebx+4], ecx
|
||
mov edx, [pg_data.pages_faults]
|
||
mov [ebx+8], edx
|
||
mov esi, [heap_size]
|
||
mov [ebx+12], esi
|
||
mov edi, [heap_free]
|
||
mov [ebx+16], edi
|
||
mov eax, [heap_blocks]
|
||
mov [ebx+20], eax
|
||
mov ecx, [free_blocks]
|
||
mov [ebx+24], ecx
|
||
ret
|
||
.fail:
|
||
mov dword [esp+36], -1
|
||
ret
|
||
|
||
align 4
|
||
new_services:
|
||
|
||
cmp eax,4
|
||
jle sys_sheduler
|
||
|
||
cmp eax, 11
|
||
jb .fail
|
||
ja @f
|
||
|
||
call init_heap
|
||
mov [esp+36], eax
|
||
ret
|
||
@@:
|
||
cmp eax, 12
|
||
ja @f
|
||
|
||
stdcall user_alloc, ebx
|
||
mov [esp+36], eax
|
||
ret
|
||
@@:
|
||
cmp eax, 13
|
||
ja @f
|
||
stdcall user_free, ebx
|
||
mov [esp+36], eax
|
||
ret
|
||
@@:
|
||
cmp eax, 14
|
||
ja @f
|
||
cmp ebx, OS_BASE
|
||
jae .fail
|
||
stdcall get_event_ex, ebx, ecx
|
||
mov [esp+36], eax
|
||
ret
|
||
@@:
|
||
cmp eax, 15
|
||
ja @f
|
||
mov ecx, [current_slot]
|
||
mov eax, [ecx+APPDATA.fpu_handler]
|
||
mov [ecx+APPDATA.fpu_handler], ebx
|
||
mov [esp+36], eax
|
||
ret
|
||
@@:
|
||
cmp eax, 16
|
||
ja @f
|
||
|
||
test ebx, ebx
|
||
jz .fail
|
||
cmp ebx, OS_BASE
|
||
jae .fail
|
||
stdcall get_service, ebx
|
||
mov [esp+36], eax
|
||
ret
|
||
@@:
|
||
cmp eax, 17
|
||
ja @f
|
||
call srv_handlerEx ;ebx
|
||
mov [esp+36], eax
|
||
ret
|
||
@@:
|
||
cmp eax, 18
|
||
ja @f
|
||
mov ecx, [current_slot]
|
||
mov eax, [ecx+APPDATA.sse_handler]
|
||
mov [ecx+APPDATA.sse_handler], ebx
|
||
mov [esp+36], eax
|
||
ret
|
||
@@:
|
||
cmp eax, 19
|
||
ja @f
|
||
cmp ebx, OS_BASE
|
||
jae .fail
|
||
stdcall load_library, ebx
|
||
mov [esp+36], eax
|
||
ret
|
||
@@:
|
||
cmp eax, 20
|
||
ja .fail
|
||
mov eax, ecx
|
||
call user_realloc
|
||
mov [esp+36], eax
|
||
ret
|
||
.fail:
|
||
xor eax, eax
|
||
mov [esp+36], eax
|
||
ret
|
||
|
||
align 4
|
||
proc init_mtrr
|
||
|
||
cmp [BOOT_VAR+0x901c],byte 2
|
||
je .exit
|
||
|
||
bt [cpu_caps], CAPS_MTRR
|
||
jnc .exit
|
||
|
||
mov eax, cr0
|
||
or eax, 0x60000000 ;disable caching
|
||
mov cr0, eax
|
||
wbinvd ;invalidate cache
|
||
|
||
mov ecx, 0x2FF
|
||
rdmsr ;
|
||
push eax
|
||
|
||
xor edx, edx
|
||
xor eax, eax
|
||
mov ecx, 0x2FF
|
||
wrmsr ;disable all MTRR
|
||
|
||
stdcall set_mtrr, dword 0,dword 0,[MEM_AMOUNT],MEM_WB
|
||
stdcall set_mtrr, dword 1,[LFBAddress],[LFBSize],MEM_WC
|
||
xor edx, edx
|
||
xor eax, eax
|
||
mov ecx, 0x204
|
||
mov ebx, 6
|
||
@@:
|
||
wrmsr ;disable unused MTRR
|
||
inc ecx
|
||
wrmsr
|
||
inc ecx
|
||
dec ebx
|
||
jnz @b
|
||
|
||
wbinvd ;again invalidate
|
||
|
||
pop eax
|
||
or eax, 0x800 ;set default memtype to UC
|
||
and al, 0xF0
|
||
mov ecx, 0x2FF
|
||
wrmsr ;and enable MTRR
|
||
|
||
mov eax, cr0
|
||
and eax, not 0x60000000
|
||
mov cr0, eax ; enable caching
|
||
.exit:
|
||
ret
|
||
endp
|
||
|
||
align 4
|
||
proc set_mtrr stdcall, reg:dword,base:dword,size:dword,mem_type:dword
|
||
|
||
xor edx, edx
|
||
mov eax, [base]
|
||
or eax, [mem_type]
|
||
mov ecx, [reg]
|
||
lea ecx, [0x200+ecx*2]
|
||
wrmsr
|
||
|
||
mov ebx, [size]
|
||
dec ebx
|
||
mov eax, 0xFFFFFFFF
|
||
mov edx, 0x0000000F
|
||
sub eax, ebx
|
||
sbb edx, 0
|
||
or eax, 0x800
|
||
inc ecx
|
||
wrmsr
|
||
ret
|
||
endp
|
||
|
||
|
||
|
||
align 4
|
||
proc stall stdcall, delay:dword
|
||
push ecx
|
||
push edx
|
||
push ebx
|
||
push eax
|
||
|
||
mov eax, [delay]
|
||
mul [stall_mcs]
|
||
mov ebx, eax ;low
|
||
mov ecx, edx ;high
|
||
rdtsc
|
||
add ebx, eax
|
||
adc ecx,edx
|
||
@@:
|
||
rdtsc
|
||
sub eax, ebx
|
||
sbb edx, ecx
|
||
jb @B
|
||
|
||
pop eax
|
||
pop ebx
|
||
pop edx
|
||
pop ecx
|
||
ret
|
||
endp
|
||
|
||
align 4
|
||
proc create_ring_buffer stdcall, size:dword, flags:dword
|
||
locals
|
||
buf_ptr dd ?
|
||
endl
|
||
|
||
mov eax, [size]
|
||
test eax, eax
|
||
jz .fail
|
||
|
||
add eax, eax
|
||
stdcall alloc_kernel_space, eax
|
||
test eax, eax
|
||
jz .fail
|
||
|
||
push ebx
|
||
|
||
mov [buf_ptr], eax
|
||
|
||
mov ebx, [size]
|
||
shr ebx, 12
|
||
push ebx
|
||
|
||
stdcall alloc_pages, ebx
|
||
pop ecx
|
||
|
||
test eax, eax
|
||
jz .mm_fail
|
||
|
||
push edi
|
||
|
||
or eax, [flags]
|
||
mov edi, [buf_ptr]
|
||
mov ebx, [buf_ptr]
|
||
mov edx, ecx
|
||
shl edx, 2
|
||
shr edi, 10
|
||
@@:
|
||
mov [page_tabs+edi], eax
|
||
mov [page_tabs+edi+edx], eax
|
||
invlpg [ebx]
|
||
invlpg [ebx+esi]
|
||
add eax, 0x1000
|
||
add ebx, 0x1000
|
||
add edi, 4
|
||
dec ecx
|
||
jnz @B
|
||
|
||
mov eax, [buf_ptr]
|
||
pop edi
|
||
pop ebx
|
||
ret
|
||
.mm_fail:
|
||
stdcall free_kernel_space, [buf_ptr]
|
||
xor eax, eax
|
||
pop ebx
|
||
.fail:
|
||
ret
|
||
endp
|
||
|
||
if 0
|
||
push eax
|
||
push edx
|
||
mov edx, 0x400 ;bochs
|
||
mov al,0xff ;bochs
|
||
out dx, al ;bochs
|
||
pop edx
|
||
pop eax
|
||
end if
|
||
|
||
|