Subversion Repositories Kolibri OS

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;;                                                              ;;

;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;

;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa      ;;

;; Distributed under terms of the GNU General Public License    ;;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

$Revision: 1055 $

uglobal

align 4

  event_start   dd ?

  event_end     dd ?

  event_uid     dd 0

endg

EV_SPACE   = 512

FreeEvents = event_start-EVENT.fd    ; "âèðòóàëüíûé" event, èñïîëüçóþòñÿ òîëüêî ïîëÿ:

                                     ;  FreeEvents.fd=event_start è FreeEvents.bk=event_end

align 4

init_events:                                       ;; used from kernel.asm

        stdcall kernel_alloc,EV_SPACE*EVENT.size

        or      eax,eax

        jz      .fail

      ; eax - current event, ebx - previos event below

        mov     ecx,EV_SPACE         ; current - in allocated space

        mov     ebx,FreeEvents       ; previos - íà÷àëî ñïèñêà

        push    ebx                  ; îíî æå è êîíåö ïîòîì áóäåò

  @@:   mov     [ebx+EVENT.fd],eax

        mov     [eax+EVENT.bk],ebx

        mov     ebx,eax              ; previos <- current

        add     eax,EVENT.size       ; new current

        loop    @b

        pop     eax                  ; âîò îíî êîíöîì è ñòàëî

        mov     [ebx+EVENT.fd],eax

        mov     [eax+EVENT.bk],ebx

.fail:  ret

EVENT_WATCHED    equ 0x10000000 ;áèò 28

EVENT_SIGNALED   equ 0x20000000 ;áèò 29

MANUAL_RESET     equ 0x40000000 ;áèò 30

MANUAL_DESTROY   equ 0x80000000 ;áèò 31

align 4

create_event:                                      ;; EXPORT use

;info:

;   Ïåðåíîñèì EVENT èç ñïèñêà FreeEvents â ñïèñîê ObjList òåêóùåãî ñëîòà

;   EVENT.state óñòàíàâëèâàåì èç ecx, EVENT.code êîñâåííî èç esi (åñëè esi<>0)

;param:

;   esi - event data

;   ecx - flags

;retval:

;   eax - event (=0 => fail)

;   edx - uid

;scratched: ebx,ecx,esi,edi

        mov     ebx,[current_slot]

        add     ebx,APP_OBJ_OFFSET

        mov     edx,[TASK_BASE]

        mov     edx,[edx+TASKDATA.pid]

        pushfd

        cli

set_event:                                         ;; INTERNAL use !!! don't use for Call

;info:

;   Áåðåì íîâûé event èç FreeEvents, çàïîëíÿåì åãî ïîëÿ, êàê óêàçàíî â ecx,edx,esi

;   è óñòàíàâëèâàåì â ñïèñîê, óêàçàííûé â ebx.

;   Âîçâðàùàåì ñàì event (â eax), è åãî uid (â edx)

;param:

;   ebx - start-chain "virtual" event for entry new event Right of him

;   ecx - flags      (copied to EVENT.state)

;   edx - pid        (copied to EVENT.pid)

;   esi - event data (copied to EVENT.code indirect, =0 => skip)

;retval:

;   eax - event (=0 => fail)

;   edx - uid

;scratched: ebx,ecx,esi,edi

        mov     eax,[event_start]

        cmp     eax,FreeEvents

        jne     @f  ; not empty ???

        pushad

        call    init_events

        popad

        jz      RemoveEventTo.break ; POPF+RET

  @@:   mov     [eax+EVENT.magic],'EVNT'

        mov     [eax+EVENT.destroy],destroy_event.internal

        mov     [eax+EVENT.state],ecx

        mov     [eax+EVENT.pid],edx

        inc     [event_uid]

        Mov     [eax+EVENT.id],edx,[event_uid]

        or      esi,esi

        jz      RemoveEventTo

        lea     edi,[eax+EVENT.code]

        mov     ecx,EVENT.codesize/4

        cld

        rep     movsd

RemoveEventTo:                                     ;; INTERNAL use !!! don't use for Call

;param:

;   eax - óêàçàòåëü íà event, ÊÎÒÎÐÛÉ âñòàâëÿåì

;   ebx - óêàçàòåëü íà event, ÏÎÑËÅ êîòîðîãî âñòàâëÿåì

;scratched: ebx,ecx

        mov     ecx,eax              ; ecx=eax=Self,      ebx=NewLeft

        xchg    ecx,[ebx+EVENT.fd]   ; NewLeft.fd=Self,   ecx=NewRight

        mov     [ecx+EVENT.bk],eax   ; NewRight.bk=Self

        xchg    ebx,[eax+EVENT.bk]   ; Self.bk=NewLeft,   ebx=OldLeft

        xchg    ecx,[eax+EVENT.fd]   ; Self.fd=NewRight,  ecx=OldRight

        mov     [ebx+EVENT.fd],ecx   ; OldLeft.fd=OldRight

        mov     [ecx+EVENT.bk],ebx   ; OldRight.bk=OldLeft

.break: popfd

        ret

align 4

NotDummyTest:                                      ;; INTERNAL use (not returned for fail !!!)

        pop     edi

        call    DummyTest ; not returned for fail !!!

        mov     ebx,eax

        mov     eax,[ebx+EVENT.pid]

        push    edi

.small: ; êðèâî êàê-òî...

        pop     edi

        pushfd

        cli

        call    pid_to_slot ; seved all registers (eax - retval)

        shl     eax,8

        jz      RemoveEventTo.break ; POPF+RET

        jmp     edi ; øòàòíûé âîçâðàò

align 4

raise_event:                                       ;; EXPORT use

;info:

;   Óñòàíàâëèâàåì äàííûå EVENT.code

;   Åñëè òàì ôëàã EVENT_SIGNALED óæå àêòèâåí - áîëüøå íè÷åãî

;   Èíà÷å: ýòîò ôëàã âçâîäèòñÿ, çà èñêëþ÷åíèåì ñëó÷àÿ íàëè÷èÿ ôëàãà EVENT_WATCHED â edx

;    ýòîì ñëó÷àå EVENT_SIGNALED âçâîäèòñÿ ëèøü ïðè íàëè÷èå EVENT_WATCHED â ñàìîì ñîáûòèè

;param:

;   eax - event

;   ebx - uid (for Dummy testing)

;   edx - flags

;   esi - event data (=0 => skip)

;scratched: ebx,ecx,esi,edi

        call    NotDummyTest ; not returned for fail !!!

        or      esi,esi

        jz      @f

        lea     edi,[ebx+EVENT.code]

        mov     ecx,EVENT.codesize/4

        cld

        rep     movsd

  @@:

        test    byte[ebx+EVENT.state+3], EVENT_SIGNALED shr 24

        jnz     RemoveEventTo.break  ; POPF+RET

        bt      edx, 28 ;EVENT_WATCHED

        jnc     @f

        test    byte[ebx+EVENT.state+3], EVENT_WATCHED  shr 24

        jz      RemoveEventTo.break  ; POPF+RET

  @@:

        or      byte[ebx+EVENT.state+3], EVENT_SIGNALED shr 24

        add     eax,SLOT_BASE+APP_EV_OFFSET

        xchg    eax,ebx

        jmp     RemoveEventTo

align 4

clear_event:                                       ;; EXPORT use

;info:

;

;param:

;   eax - event

;   ebx - uid (for Dummy testing)

;scratched: ebx,ecx

        call    NotDummyTest ; not returned for fail !!!

        add     eax,SLOT_BASE+APP_OBJ_OFFSET

        and     byte[ebx+EVENT.state+3], not((EVENT_SIGNALED+EVENT_WATCHED)shr 24)

        xchg    eax,ebx

        jmp     RemoveEventTo

align 4

send_event:                                        ;; EXPORT use

;info:

;   Ñîçäàåò íîâûé EVENT (âûòàñêèâàåò èç ñïèñêà FreeEvents) â ñïèñêå EventList

;   öåëåâîãî ñëîòà (eax=pid), ñ äàííûìè èç esi êîñâåííî, è state=EVENT_SIGNALED

;param:

;   eax - slots pid, to sending new event

;   esi - pointer to sending data (in code field of new event)

;retval:

;   eax - event (=0 => fail)

;   edx - uid

;warning:

;   may be used as CDECL with such prefix...

;       mov     esi,[esp+8]

;       mov     eax,[esp+4]

;   but not as STDCALL :(

;scratched: ebx,ecx,esi,edi

        mov     edx,eax

        call    NotDummyTest.small ; not returned for fail !!!

        lea     ebx,[eax+SLOT_BASE+APP_EV_OFFSET]

        mov     ecx,EVENT_SIGNALED

        jmp     set_event

align 4

DummyTest:                                         ;; INTERNAL use (not returned for fail !!!)

;param:

;   eax - event

;   ebx - uid (for Dummy testing)

        cmp     [eax+EVENT.magic],'EVNT'

        jne     @f

        cmp     [eax+EVENT.id],ebx

        je      .ret

  @@:   pop     eax

        xor     eax,eax

.ret:   ret

align 4

Wait_events:

        or      ebx,-1 ; infinite timeout

Wait_events_ex:

;info:

;   Îæèäàíèå "àáñòðàêòíîãî" ñîáûòèÿ ÷åðåç ïåðåâîä ñëîòà â 5-þ ïîçèöèþ.

;   Àáñòðàêòíîñòü çàêëþ÷åíà â òîì, ÷òî ôàêò ñîáûòèÿ îïðåäåëÿåòñÿ ôóíêöèåé APPDATA.wait_test,

;   êîòîðàÿ çàäàåòñÿ êëèåíòîì è ìîæåò áûòü ôàêòè÷åñêè ëþáîé.

;   Ýòî ïîçâîëÿåò shed-ó íàäåæíî îïðåäåëèòü ôàêò ñîáûòèÿ, è íå ñîâåðøàòü "õîëîñòûõ" ïåðåêëþ÷åíèé,

;   ïðåäíàçíà÷åííûõ äëÿ ðàçáîðîê òèïà "ñâîé/÷óæîé" âíóòðè çàäà÷è.

;param:

;   edx - wait_test, êëèåíòñêàÿ ô-ÿ òåñòèðîâàíèÿ (àäðåñ êîäà)

;   ecx - wait_param, äîïîëíèòåëüíûé ïàðàìåòð, âîçìîæíî íåîáõîäèìûé äëÿ [wait_test]

;   ebx - wait_timeout

;retval:

;   eax - ðåçóëüòàò âûçîâà [wait_test] (=0 => timeout)

;scratched: esi

        mov     esi,[current_slot]

        mov     [esi+APPDATA.wait_param],ecx

        pushad

        mov     ebx,esi;ïîêà ýòî âîïðîñ, ÷åãî êóäû ñóâàòü..........

        pushfd  ; ýòî ñëåäñòâèå îáùåé êîíöåïöèè: ïóñòü ô-ÿ òåñòèðîâàíèÿ èìååò

        cli     ; ïðàâî ðàññ÷èòûâàòü íà çàêðûòûå ïðåðûâàíèÿ, êàê ïðè âûçîâå èç shed

        call    edx

        popfd

        mov     [esp+28],eax

        popad

        or      eax,eax

        jnz     @f   ;RET

        mov     [esi+APPDATA.wait_test],edx

        mov     [esi+APPDATA.wait_timeout],ebx

        Mov     [esi+APPDATA.wait_begin],eax,[timer_ticks]

        mov     eax,[TASK_BASE]

        mov     [eax+TASKDATA.state], 5

        call    change_task

        mov     eax,[esi+APPDATA.wait_param]

  @@:   ret

align 4

wait_event:                                        ;; EXPORT use

;info:

;   Îæèäàíèå ôëàãà EVENT_SIGNALED â ñîâåðøåííî êîíêðåòíîì Event

;   (óñòàíàâëèâàåìîãî, íàäî ïîëàãàòü, ÷åðåç raise_event)

;   Ïðè àêòèâíîì ôëàãå MANUAL_RESET - áîëüøå íè÷åãî

;   Èíà÷å: ôëàãè EVENT_SIGNALED è EVENT_WATCHED ó ïîëó÷åííîãî ñîáûòèÿ ñáðàñûâàþòñÿ,

;   è, ïðè àêòèâíîì MANUAL_DESTROY - ïåðåìåùàåòñÿ â ñïèñîê ObjList òåêóùåãî ñëîòà,

;   à ïðè íå àêòèâíîì - óíè÷òîæàåòñÿ øòàòíî (destroy_event.internal)

;param:

;   eax - event

;   ebx - uid (for Dummy testing)

;scratched: ecx,edx,esi

        call    DummyTest

        mov     ecx,eax              ; wait_param

        mov     edx, get_event_alone

        call    Wait_events          ; timeout ignored

        jmp     wait_finish

align 4

get_event_ex:                                      ;; f68:14

;info:

;   Îæèäàíèå ëþáîãî ñîáûòèÿ â î÷åðåäè EventList òåêóùåãî ñëîòà

;   Äàííûå ñîáûòèÿ code - êîïèðóþòñÿ â ïàìÿòü ïðèëîæåíèÿ (êîñâåííî ïî edi)

;   Ïðè àêòèâíîì ôëàãå MANUAL_RESET - áîëüøå íè÷åãî

;   Èíà÷å: ôëàãè EVENT_SIGNALED è EVENT_WATCHED ó ïîëó÷åííîãî ñîáûòèÿ ñáðàñûâàþòñÿ,

;   è, ïðè àêòèâíîì MANUAL_DESTROY - ïåðåìåùàåòñÿ â ñïèñîê ObjList òåêóùåãî ñëîòà,

;   à ïðè íå àêòèâíîì - óíè÷òîæàåòñÿ øòàòíî (destroy_event.internal)

;param:

;   edi - àäðåñ â êîäå ïðèëîæåíèÿ äëÿ êîïèðîâàíèÿ äàííûõ èç EVENT.code

;retval:

;   eax - ñîáñòâåííî EVENT (áóäåì íàçûâàòü ýòî åãî õýíäëîì)

;scratched: ebx,ecx,edx,esi,edi

        mov     edx, get_event_queue

        call    Wait_events          ; timeout ignored

        lea     esi,[eax+EVENT.code]

        mov     ecx,EVENT.codesize/4

        cld

        rep     movsd

        mov     [edi-EVENT.codesize+2],cl ;clear priority field

wait_finish:

        test    byte[eax+EVENT.state+3], MANUAL_RESET shr 24

        jnz     get_event_queue.ret  ; RET

        and     byte[ebx+EVENT.state+3], not((EVENT_SIGNALED+EVENT_WATCHED)shr 24)

        test    byte[eax+EVENT.state+3], MANUAL_DESTROY shr 24

        jz      destroy_event.internal

        mov     ebx,[current_slot]

        add     ebx,APP_OBJ_OFFSET

        pushfd

        cli

        jmp     RemoveEventTo

align 4

destroy_event:                                     ;; EXPORT use

;info:

;   Ïåðåíîñèì EVENT â ñïèñîê FreeEvents, ÷èñòèì ïîëÿ magic,destroy,pid,id

;param:

;   eax - event

;   ebx - uid (for Dummy testing)

;retval:

;   eax - àäðåñ îáúåêòà EVENT (=0 => fail)

;scratched: ebx,ecx

        call    DummyTest ; not returned for fail !!!

.internal:

        xor     ecx,ecx   ; clear common header

        pushfd

        cli

        mov     [eax+EVENT.magic],ecx

        mov     [eax+EVENT.destroy],ecx

        mov     [eax+EVENT.pid],ecx

        mov     [eax+EVENT.id],ecx

        mov     ebx,FreeEvents

        jmp     RemoveEventTo

align 4

get_event_queue:

;info:

;   êëèåíòñêàÿ ô-ÿ òåñòèðîâàíèÿ äëÿ get_event_ex

;warning:

;  -don't use [TASK_BASE],[current_slot],[CURRENT_TASK] - it is not for your slot

;  -may be assumed, that interrupt are disabled

;  -it is not restriction for scratched registers

;param:

;   ebx - àäðåñ APPDATA ñëîòà òåñòèðîâàíèÿ

;retval:

;   eax - àäðåñ îáúåêòà EVENT (=0 => fail)

        add     ebx,APP_EV_OFFSET

        mov     eax,[ebx+APPOBJ.bk]  ; âûáèðàåì ñ êîíöà, ïî ïðèíöèïó FIFO

        cmp     eax,ebx  ; empty ???

        je      get_event_alone.ret0

.ret:   ret

align 4

get_event_alone:

;info:

;   êëèåíòñêàÿ ô-ÿ òåñòèðîâàíèÿ äëÿ wait_event

;warning:

;  -don't use [TASK_BASE],[current_slot],[CURRENT_TASK] - it is not for your slot

;  -may be assumed, that interrupt are disabled

;  -it is not restriction for scratched registers

;param:

;   ebx - àäðåñ APPDATA ñëîòà òåñòèðîâàíèÿ

;retval:

;   eax - àäðåñ îáúåêòà EVENT (=0 => fail)

        mov     eax,[ebx+APPDATA.wait_param]

        test    byte[eax+EVENT.state+3], EVENT_SIGNALED shr 24

        jnz     .ret

        or      byte[eax+EVENT.state+3], EVENT_WATCHED shr 24

.ret0:  xor     eax,eax ; NO event!!!

.ret:   ret

align 4

sys_sendwindowmsg:                                 ;; f72

        dec     ebx

        jnz     .ret ;subfunction==1 ?

        pushfd

        cli

        sub     ecx,2

        je      .sendkey

        loop    .retf

.sendbtn:

        cmp     byte[BTN_COUNT],1

        jae     .result ;overflow

        inc     byte[BTN_COUNT]

        mov     [BTN_BUFF],edx

        jmp     .result

.sendkey:

        movzx   eax,byte[KEY_COUNT]

        cmp     al,120

        jae     .result ;overflow

        inc     byte[KEY_COUNT]

        mov     [KEY_COUNT+1+eax],dl

.result:

        setae   byte[esp+36] ;ñ÷èòàåì, ÷òî èñõîäíî: dword[esp+36]==72

.retf:  popfd

.ret:   ret

align 4

sys_getevent:                                      ;; f11

        mov     ebx,[current_slot] ;ïîêà ýòî âîïðîñ, ÷åãî êóäû ñóâàòü..........

        pushfd  ; ýòî ñëåäñòâèå îáùåé êîíöåïöèè: ïóñòü ô-ÿ òåñòèðîâàíèÿ èìååò

        cli     ; ïðàâî ðàññ÷èòûâàòü íà çàêðûòûå ïðåðûâàíèÿ, êàê ïðè âûçîâå èç shed

        call    get_event_for_app

        popfd

        mov     [esp+32],eax

        ret

align 4

sys_waitforevent:                                  ;; f10

        or      ebx,-1 ; infinite timeout

sys_wait_event_timeout:                            ;; f23

        mov     edx,get_event_for_app

        call    Wait_events_ex

        mov     [esp+32],eax

        ret

align 4

get_event_for_app:                                 ;; used from f10,f11,f23

;info:

;   êëèåíòñêàÿ ô-ÿ òåñòèðîâàíèÿ äëÿ ïðèëîæåíèé (f10,f23)

;warning:

;  -don't use [TASK_BASE],[current_slot],[CURRENT_TASK] - it is not for your slot

;  -may be assumed, that interrupt are disabled

;  -it is not restriction for scratched registers

;param:

;   ebx - àäðåñ APPDATA ñëîòà òåñòèðîâàíèÿ

;retval:

;   eax - íîìåð ñîáûòèÿ (=0 => no events)

        movzx   edi,bh                ; bh  is assumed as [CURRENT_TASK]

        shl     edi,5

        add     edi,CURRENT_TASK      ; edi is assumed as [TASK_BASE]

        mov     ecx,[edi+TASKDATA.event_mask]

.loop: ; ïîêà íå èñ÷åðïàåì âñå áèòû ìàñêè

        bsr     eax,ecx        ; íàõîäèì íåíóëåâîé áèò ìàñêè (31 -> 0)

        jz      .no_events     ; èñ÷åðïàëè âñå áèòû ìàñêè, íî íè÷åãî íå íàøëè ???

        btr     ecx,eax        ; ñáðàñûâàåì ïðîâåðÿåìûé áèò ìàñêè

       ; ïåðåõîäèì íà îáðàáîò÷èê ýòîãî (eax) áèòà

        cmp     eax,16

        jae     .IRQ           ; eax=[16..31]=retvals, events irq0..irq15

        cmp     eax,9

        jae     .loop          ; eax=[9..15], ignored

        cmp     eax,3

        je      .loop          ; eax=3, ignored

        ja      .FlagAutoReset ; eax=[4..8], retvals=eax+1

        cmp     eax,1

        jae     .BtKy          ; eax=[1,2],  retvals=eax+1

.WndRedraw:                    ; eax=0, retval WndRedraw=1

        cmp     [edi-twdw+WDATA.fl_redraw],al ;al==0

        jne     .result

        jmp     .loop

  .no_events:

        xor     eax,eax

        ret

.IRQ:

;TODO: ñäåëàòü òàê æå, êàê è äëÿ FlagAutoReset (BgrRedraw,Mouse,IPC,Stack,Debug)

        mov     edx,[irq_owner+eax*4-64] ; eax==16+irq

        cmp     edx,[edi+TASKDATA.pid]

        jne     .loop

        mov     edx,eax

        shl     edx,12

        cmp     dword[IRQ_SAVE+edx-0x10000],0 ; edx==(16+irq)*0x1000

        je      .loop          ; empty ???

        ret     ; retval = eax

.FlagAutoReset: ; retvals: BgrRedraw=5, Mouse=6, IPC=7, Stack=8, Debug=9

        btr     [ebx+APPDATA.event_mask],eax

        jnc     .loop

  .result:      ; retval = eax+1

        inc     eax

        ret

  .BtKy:

        movzx   edx,bh

        movzx   edx, word[WIN_STACK+edx*2]

        je      .Keys          ; eax=1, retval Keys=2

.Buttons:                      ; eax=2, retval Buttons=3

        cmp     byte[BTN_COUNT],0

        je      .loop          ; empty ???

        cmp     edx,[TASK_COUNT]

        jne     .loop          ; not Top ???

        cmp     dword[BTN_BUFF],0xFFFF ;-ID for Minimize-Button of Form

        jne     .result

        mov     [window_minimize],1

        dec     byte[BTN_COUNT]

        jmp     .loop

.Keys:    ; eax==1

        cmp     edx,[TASK_COUNT]

        jne     @f             ; not Top ???

        cmp     [KEY_COUNT],al ; al==1

        jae     .result        ; not empty ???

  @@:   mov     edx, hotkey_buffer

  @@:   cmp     [edx],bh       ; bh - slot for testing

        je      .result

        add     edx,8

        cmp     edx, hotkey_buffer+120*8

        jb      @b

        jmp     .loop

;end.