mirror of https://github.com/A2osX/A2osX.git
631 lines
11 KiB
Plaintext
631 lines
11 KiB
Plaintext
NEW
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AUTO 3,1
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*--------------------------------------
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CORE.Run ldx #1
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bra .80 Skip PS0
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.1 stx CORE.PSIndex
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lda PS.Table.hPS,x
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beq .8
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jsr K.GetMemPtr
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>STYA pPs
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lda (pPS) get S.PS.F
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* bit #S.PS.F.HOLD Waiting for Another Task to Terminate?
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* beq .2
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bpl .2
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ldy #S.PS.CPID
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lda (pPS),y
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jsr CORE.GetPS
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bcc .8 yes, still running....
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lda (pPS) get S.PS.F again
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eor #S.PS.F.HOLD unmark as HOLD
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sta (pPS)
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.2 jsr CORE.PSSelect Restore ZP & Ptrs
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.3 jsr CORE.PSExec INIT/RUN/QUIT/RESUME
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dec IRQ.InKernel
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bcc .4 INIT/RUN Exit ?
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jsr CORE.UpdPPS Yes, go Update Parent PS
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ldy #S.PS.S
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lda #S.PS.S.QUIT
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sta (pPS),y
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bra .3 try executing QUIT now...
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.4 lda (pPS)
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bit #S.PS.F.SLEEP
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bne .7
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ldy #S.PS.S
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lda (pPS),y
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bne .5
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lda #S.PS.S.RUN go from INIT to RUN
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sta (pPS),y
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bra .7
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.5 cmp #S.PS.S.QUIT
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bne .7
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ldy #S.PS.PID
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lda (pPS),y
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cmp #1 INITD ?
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bne .6
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jmp CORE.Quit
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.6 >PUSHA PID
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>PUSHBI 2 SIG
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>SYSCALL2 Kill
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bra .8
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.7 jsr CORE.PSLeave Save ZP & Ptrs
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.8 ldx CORE.PSIndex
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inx
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.80 cpx CORE.PSCount
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bne .1
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*--------------------------------------
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CORE.Events jsr CORE.GetEvents
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bcs .4 CS=no event
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jsr CORE.Dispatch
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bcc .4 CC=All Events Dispatched
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lda PS.Table.PID Select PS0
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jsr K.GetMemPtr
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>STYA pPs
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>LDYAI K.STACKTOP
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>STYA pStack
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lda #Evt.Table
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sta pEvent
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.1 lda (pEvent)
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beq .3
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bpl .3
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jsr CORE.DestroyEvent Discard any timer event
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.3 lda pEvent
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clc
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adc #S.EVT
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sta pEvent
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lda CORE.EvtCount
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bne .1
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*--------------------------------------
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.4 bit OPENAPPLE
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bpl .8
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lda KBD
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bpl .8
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cmp #"0"
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bcc .8
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cmp #"9"+1
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bcs .8
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sta KBDSTROBE
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and #$0F
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cmp A2osX.ASCREEN Same as active screen...nothing to do
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beq .8
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tax
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lda A2osX.SCRNDEVS,x Get DevID
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beq .8 No device claimed this screen
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>PUSHA
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>PUSHBI IOCTL.CONTROL request
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>PUSHWZ Param
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>SYSCALL2 IOCTL
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.8 jmp CORE.Run
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*--------------------------------------
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CORE.Quit php
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sei
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jsr CORE.IRQ.Off
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plp
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lda IRQ.INTNUM
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sta K.MLI.PARAMS+1
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>MLICALL MLIDEALLOCIRQ
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ldx #5
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.1 stz K.MLI.PARAMS+1,x
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dex
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bpl .1
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lda #4
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ldx #MLIQUIT
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jmp GP.MLICall
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*--------------------------------------
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CORE.UpdPPS tax save RC From INIT or RUN
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ldy #S.PS.PPID Notify Parent Process for exit code...
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lda (pPS),y
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beq .8 no parent process
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jsr CORE.GetPSByID X unmodified
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bcs .8 parent is dead.....skipping...
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>STYA ZPPtr1
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lda (ZPPtr1) Parent PS is HOLD?
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bit #S.PS.F.HOLD
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beq .8 no...
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ldy #S.PS.CPID
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lda (ZPPtr1),y
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dey #S.PS.PID
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cmp (pPS),y
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bne .8 Hold, but not waiting this PS
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txa waiting for this PS to terminate....
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ldy #S.PS.RC give it RC
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sta (ZPPtr1),y
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lda (ZPPtr1)
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eor #S.PS.F.HOLD release Parent PS HOLD...
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sta (ZPPtr1)
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* clc
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.8 rts
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*--------------------------------------
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* CORE.GetEvents :
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* IN :
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* OUT :
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* CS = no event, A = ERROR
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* CC * event in YA
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* (pEvent)
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*--------------------------------------
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CORE.GetEvents lda #Evt.Table
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sta pEvent point to start of event list
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stz CORE.EvtCount reset Size
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bit A2osX.IRQMode do we have IRQ enabled for Ticks ?
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bpl .1 no, regular poll
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lda IRQ.Tick a Tick ?
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beq .8 no, no event
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dec IRQ.Tick
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bra .2
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.1 lda VBL get VLINE status
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tax
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eor CORE.VBLState
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bpl .8 no change,no tick
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txa
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sta CORE.VBLState save new
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bpl .8 Up2down transition,no tick
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.2 lda #0
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dec CORE.TickSec
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bne .3 not yet One Sec
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lda IRQ.Mode
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eor #$C0
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sta IRQ.Mode
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ldx A2osX.ASCREEN /DEV/CONSOLE
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bne .22
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sta SYS.BASL0+38
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.22 ldx CORE.TickPerSec
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stx CORE.TickSec
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lda #S.EVT.F.T1SEC
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bra .4 Force Resync T1 & T10...
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.3 dec CORE.Tick10t
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bne .6
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.4 inc DevMgr.Timer
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inc A2osX.TIMER16
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bne .5
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inc A2osX.TIMER16+1
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.5 ldx CORE.TickPer10t
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stx CORE.Tick10t
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ora #S.EVT.F.T10TH
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.6 tax Finally, do we have an event ?
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beq .8 no....
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sta (pEvent)
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inc CORE.EvtCount Add one event to Queue
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* lda pEvent
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* clc
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* adc #S.EVT
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* sta pEvent if CS, EVT queue full!!! ($100)
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* MORE EVENT PROCESSING HERE
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.8 lda CORE.EvtCount if 0, exit with CS (from cmp), and A=0 "no event"
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beq .9
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clc
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rts
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.9 sec
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rts
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*--------------------------------------
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* CORE.Dispatch
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* IN:
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* OUT:
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* CS: Not Dispatched
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* CC: Event Cleared
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*--------------------------------------
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CORE.Dispatch ldx #1 skip PS0
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bra .80
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.1 stx CORE.PSIndex
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lda PS.Table.hPS,x
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beq .5
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jsr K.GetMemPtr
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>STYA pPS
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lda (pPS)
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bit #S.PS.F.EVENT Accept Events ?
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beq .5
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ldy #S.PS.S
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lda (pPS),y
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cmp #S.PS.S.RUN
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bne .5
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lda #S.PS.S.DOEVENT Flag this PS for IRQ Mgr
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sta (pPS),y
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jsr CORE.PSSelect
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lda #Evt.Table
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sta pEvent Select first event in list
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lda CORE.EvtCount
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sta CORE.EvtIndex
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.2 lda (pEvent) Empty event, select next
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beq .3
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ldx #S.PS.S.DOEVENT
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jsr CORE.PSExecX
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dec IRQ.InKernel
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bcs .3 not for this PS, try next event in list
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jsr CORE.DestroyEvent this PS handled the EVT, destroy it...
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lda CORE.EvtCount
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beq .4 no more event, exit
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.3 dec CORE.EvtIndex
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beq .4 all EVT submitted to this PS, try other PS
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lda pEvent try next EVT to this PS
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clc
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adc #S.EVT
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sta pEvent
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bra .2
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.4 ldy #S.PS.S
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lda #S.PS.S.RUN
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sta (pPS),y
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jsr CORE.PSLeave
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.5 ldx CORE.PSIndex
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inx
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.80 cpx CORE.PSCount
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bne .1
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* sec
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rts
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*--------------------------------------
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* X unmodified
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*--------------------------------------
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CORE.GetPSByID jsr CORE.GetPS
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bcs .9
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lda PS.TABLE.hPS,y
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jmp K.GetMemPtr
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.9 rts
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*--------------------------------------
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* X,A unmodified
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*--------------------------------------
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CORE.GetPS tay
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beq .8 PS0 requested
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ldy #0
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bra .2 Skip PS0
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.1 cmp PS.Table.PID,y
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beq .8
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.2 iny
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cpy CORE.PSCount
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bne .1
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.9 lda #E.NSP
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* sec
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rts
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.8 clc
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rts
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*--------------------------------------
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CORE.DestroyEvent
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lda (pEvent)
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beq .9
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bit #S.EVT.F.hMEM1
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beq .1
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pha
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ldy #S.EVT.B1
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lda (pEvent),y
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jsr K.FreeMem
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pla
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.1 bit #S.EVT.F.hMEM2
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beq .2
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ldy #S.EVT.B2
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lda (pEvent),y
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jsr K.FreeMem
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.2 lda #0
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sta (pEvent)
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dec CORE.EvtCount
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.9 rts
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*--------------------------------------
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CORE.PSSelect ldy #S.PS.ZP.CODE+PSCTX.SIZE-1
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ldx #PSCTX.SIZE-1
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.1 lda (pPS),y
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sta pCode,x
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dey
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dex
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bpl .1
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rts
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*--------------------------------------
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CORE.PSLeave ldx #PSCTX.SIZE-1
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ldy #S.PS.ZP.CODE+PSCTX.SIZE-1
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.1 lda pCode,x
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sta (pPS),y
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dey
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dex
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bpl .1
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rts
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*--------------------------------------
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CORE.PSExec lda (pPS)
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bit #S.PS.F.SLEEP
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bne CORE.PSResume
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ldy #S.PS.S
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lda (pPS),y
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tax
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CORE.PSExecX lda pCode+1
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pha
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lda pCode
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pha
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php
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sei
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inc IRQ.InKernel
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rti
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*--------------------------------------
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CORE.PSResume sei
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eor #S.PS.F.SLEEP unmark as SLEEP
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sta (pPS)
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>PULLA Get !BC
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tax
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beq .2
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.1 >PULLA
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pha
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inx
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bne .1
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.2 ldy #S.PS.PC+1
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lda (pPS),y
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pha
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dey #S.PS.PC
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lda (pPS),y
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pha
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dey #S.PS.P
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lda (pPS),y
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pha
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dey #S.PS.Y
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lda (pPS),y
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pha
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dey #S.PS.X
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lda (pPS),y
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tax
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dey #S.PS.A
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lda (pPS),y
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ply
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inc IRQ.InKernel
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rti
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*--------------------------------------
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CORE.VBLState .BS 1
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CORE.TickPerSec .BS 1
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CORE.TickPer10t .BS 1
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CORE.TickSec .BS 1
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CORE.Tick10t .BS 1
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CORE.CPUStatCnt .DA #100
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CORE.LastPSID .DA #0
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*--------------------------------------
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CORE.EvtIndex .BS 1
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CORE.EvtCount .BS 1
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*--------------------------------------
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* Called by :
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* - Kernel IRQ Manager (AuxLC)
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* - ProDOS IRQ Manager (GP)
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*--------------------------------------
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CORE.IRQ.IIGS lda IO.IIGS.INTFLAG
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and #$08
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beq CORE.IRQ.DEV
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stz IO.IIGS.CLRVBLINT
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bra CORE.IRQ.Switch
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*--------------------------------------
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CORE.IRQ.TCLOCK ldy IRQ.n0
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lda $c080,y
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and #$20
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beq CORE.IRQ.DEV
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lda $c088,y
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lda $c080,y
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bra CORE.IRQ.Switch
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*--------------------------------------
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CORE.IRQ.MOUSE jsr $FFFF SELF MODIFIED,SERVEMOUSE
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bcs CORE.IRQ.DEV Not From Mouse
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ldx IRQ.0n
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lda MOUSESTSx,x
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and #MOUSESTSx.INTVBL IRQ was caused by VBL ?
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beq CORE.IRQ.DEV
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ldx CORE.IRQ.MOUSE.2+2 $Cn
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ldy IRQ.n0
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CORE.IRQ.MOUSE.2
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jsr $FFFF SELF MODIFIED,READMOUSE
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*--------------------------------------
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CORE.IRQ.Switch inc IRQ.Tick
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dec CORE.CPUStatCnt
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bne .2
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lda #100
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sta CORE.CPUStatCnt
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ldx #K.PS.MAX-1
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.1 lda PS.Table.Hits,x
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stz PS.Table.Hits,x
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sta PS.Table.Stats,x
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dex
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bpl .1
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.2 lda IRQ.InKernel
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bpl .3
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inc PS.Table.Hits
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.9 clv
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clc
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rts
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.3 ldx CORE.PSIndex
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inc PS.Table.Hits,x
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bit A2osX.F A2osX.F.PMODE .EQ %01000000
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bvc .8
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ldy #S.PS.S
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lda (pPS),y
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eor #S.PS.S.RUN
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bne .9
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lda IRQ.InLib
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bmi .9 we are in LIB, no switching
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.8 clc exit with V flag set
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rts
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*--------------------------------------
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CORE.IRQ.DEV ldx #0
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.1 lda IRQ.Vectors+1,x
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beq .9
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sta .10+2
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lda IRQ.Vectors,x
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sta .10+1
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phx
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.10 jsr $ffff SELF MODIFIED
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plx
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bcc .8 CC, IRQ cleared by device
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.2 inx
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inx
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.3 cpx #K.IRQDEV.MAX*2
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bne .1
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.9 sec
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.8 clv clear V (no task switching)
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rts
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*--------------------------------------
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CORE.IRQ.IIGS.Off
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lda #$08
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trb IO.IIGS.INTEN
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rts
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*--------------------------------------
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CORE.IRQ.TCLOCK.Off
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ldx IRQ.n0
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stz $c080,x
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lda $c088,x
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lda $c080,x
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ldx IRQ.0n
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* sta SETPAGE2
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* stz $478,x
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* stz $7f8,x
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* sta CLRPAGE2
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stz $478,x
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stz $7f8,x
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*--------------------------------------
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CORE.IRQ.Off rts
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*--------------------------------------
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CORE.IRQ.MOUSE.Off
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ldy CORE.IRQ.MOUSE.Off.1+2 Cn
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ldy IRQ.n0
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lda #0
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CORE.IRQ.MOUSE.Off.1
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jmp $ffff SELF MODIFIED
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*--------------------------------------
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IRQ.InKernel .BS 1
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IRQ.InLib .BS 1
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IRQ.Skip .BS 1
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IRQ.IntNum .BS 1
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IRQ.n0 .BS 1
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IRQ.0n .BS 1
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IRQ.Mode .BS 1
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IRQ.Tick .BS 1
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*--------------------------------------
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IRQ.Vectors .BS K.IRQDEV.MAX*2
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*--------------------------------------
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MAN
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SAVE usr/src/sys/kernel.s.core
|
||
LOAD usr/src/sys/kernel.s
|
||
ASM
|