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A2osX/SYS/KERNEL.S.TSK.txt
Rémy GIBERT 8be8351136 Loader & KM modules implemented
2015-03-15 23:00:40 +01:00

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PR#3
PREFIX /A2OSX.BUILD
NEW
INC 1
AUTO 6
.LIST OFF
.OP 65C02
*--------------------------------------
* S.TskMgrInit
*--------------------------------------
S.TskMgrInit stz TSKMGR.LASTID
>LDYAI TSKMGR.TABLE
>STYA TSKMGR.TSKPTR
ldx #K.PS.MAX
.1 lda #0
ldy #S.PS.SIZE-1
.2 sta (TSKMGR.TSKPTR),y
dey
bpl .2
lda TSKMGR.TSKPTR
clc
adc #S.PS.SIZE
sta TSKMGR.TSKPTR
bcc .3
inc TSKMGR.TSKPTR+1
.3 dex
bne .1
>LDYAI TSKMGR.TABLE Make PS #0 as current process
>STYA TSKMGR.TSKPTR
jsr S.CreateEnv
bcs .9
ldy #S.PS.hENV
sta TSKMGR.TABLE,y
>LDYAI TmpBuffer256
jsr S.MLIGetPrefix
bcs .9
>PUSHWI TmpBuffer256
jsr S.NewPStr
bcs .9
ldy #S.PS.hPREFIX
sta TSKMGR.TABLE,y
>PUSHWI TmpBuffer256 push ENV value
>PUSHWI ENV.A2osX push ENV name
ldy #S.PS.hENV
lda TSKMGR.TABLE,y
>PUSHA
jsr S.SetEnvVarP
rts
.9 sec
rts
*--------------------------------------
* S.TskMgrRun
*--------------------------------------
S.TskMgrRun >LDYAI TSKMGR.TABLE+S.PS.SIZE
>STYA TSKMGR.TSKPTR
lda #K.PS.MAX-1 Skip PS #0
sta TSKMGR.COUNT
.1 lda (TSKMGR.TSKPTR) get S.PS.F
and #S.PS.F.INUSE In use ?
beq .5
lda (TSKMGR.TSKPTR) get S.PS.F
and #S.PS.F.HOLD Waiting for Another Task to Terminate?
beq .3
ldy #S.PS.CID
lda (TSKMGR.TSKPTR),y
jsr S.IsPSRunningA
bcc .5 yes, running....
lda (TSKMGR.TSKPTR) get S.PS.F
and #$FF^S.PS.F.HOLD unmark as HOLD
sta (TSKMGR.TSKPTR)
.3 ldy #S.PS.hCS
lda (TSKMGR.TSKPTR),y
jsr S.GetMemPtrA Y,A = CS
pha
tya get CS LO
ldy #S.PS.PC
clc
adc (TSKMGR.TSKPTR),y
sta Kernel.JMP
iny
pla
adc (TSKMGR.TSKPTR),y
sta Kernel.JMP+1
lda #0 Don't forget to reset S.PC
sta (TSKMGR.TSKPTR),y
dey
sta (TSKMGR.TSKPTR),y
>LDYA TSKMGR.TSKPTR
ldx #TSKMGR.RUN
jsr Kernel.BINCALL Call RUN function
bcc .5 RUN said CS=QUIT?
ldy #S.PS.hCS
lda (TSKMGR.TSKPTR),y
jsr S.GetMemPtrA Y,A = CS
>STYA Kernel.JMP
>LDYA TSKMGR.TSKPTR
ldx #TSKMGR.QUIT yes, quit this process
jsr Kernel.BINCALL Call QUIT function
ldy #S.PS.ID
lda (TSKMGR.TSKPTR),y
jsr S.FreeProcessA
bcs .99
.5 lda TSKMGR.TSKPTR
clc
adc #S.PS.SIZE
sta TSKMGR.TSKPTR
bcc .6
inc TSKMGR.TSKPTR+1
.6 dec TSKMGR.COUNT
bne .1
clc
rts
.99 bra *
*--------------------------------------
* S.DispatchEvent
* IN:
* PULLW = Event
* OUT:
* CS: Not Dispatched
* CC: Event Cleared
*--------------------------------------
S.DispatchEvent >LDYAI TSKMGR.TABLE+S.PS.SIZE
>STYA TSKMGR.TSKPTR
lda #K.PS.MAX-1
sta TSKMGR.COUNT
.1 lda (TSKMGR.TSKPTR) get S.PS.F
and #S.PS.F.INUSE In use ?
beq .3
lda (TSKMGR.TSKPTR) get S.PS.F
and #S.PS.F.HOLD Waiting for Another Task to Terminate?
bne .3
lda (TSKMGR.TSKPTR) get S.PS.F
and #S.PS.F.EVENT Accept Events ?
beq .3
ldy #S.PS.hCS
lda (TSKMGR.TSKPTR),y
jsr S.GetMemPtrA
>STYA Kernel.JMP
>PUSHW EVTMGR.EVTPTR
>LDYA TSKMGR.TSKPTR
ldx #TSKMGR.DOEVENT
jsr Kernel.BINCALL Call DOEVENT function
bcc .8
.3 lda TSKMGR.TSKPTR
clc
adc #S.PS.SIZE
sta TSKMGR.TSKPTR
bcc .4
inc TSKMGR.TSKPTR+1
.4 dec TSKMGR.COUNT
bne .1
sec
.8 rts
*--------------------------------------
* S.TskMgrQuit
*--------------------------------------
S.TskMgrQuit clc
rts
*--------------------------------------
* PUBLIC
*--------------------------------------
* S.ExecProcessA (Blocking Parent PID)
* in :
* A = hMem To Full Cmd Line
* out :
* A = Child PSID
*--------------------------------------
S.ExecProcessA jsr S.CreateProcessA
bcs .9 terminated, do not set PID as HOLD
ldy #S.PS.CID
sta (TSKMGR.TSKPTR),y
pha Save Child PID
lda (TSKMGR.TSKPTR)
ora #S.PS.F.HOLD
sta (TSKMGR.TSKPTR)
pla Get Back PID
clc
.9 rts
*--------------------------------------
* S.CreateProcessA (Non Blocking)
* in :
* A = hMem To Full Cmd Line
* out :
* A = Child PSID
*--------------------------------------
S.CreateProcessA
pha save CMD line
>LDYAI MSG.NEWPS
jsr S.SysScrPPSTR
ldy #S.PS.ID
lda (TSKMGR.TSKPTR),y
jsr S.CreateChildProcessA
bcs .99
>STYA TSKMGR.pNewPS
pla Get Back CMD Line
jsr S.InitProcessA
bcs .97 Init Failed or exit?
ldy #S.PS.ID
lda (TSKMGR.pNewPS),y
clc
rts
.97 pha save error code
tay error code =0 ?
bne .98 no, init failed
>LDYA TSKMGR.pNewPS
ldx #TSKMGR.QUIT yes, simply call QUIT function
jsr Kernel.BINCALL Call QUIT function
.98 ldy #S.PS.ID
lda (TSKMGR.pNewPS),y
jsr S.FreeProcessA
bra .90
.99 plx Discard CMD Line
pha save error code
.90 pla get back error code
sec
rts
*--------------------------------------
* S.GetPSByIDA
* In :
* A = PID
* Out :
* Y,A = PTR to TSKSLOT
*--------------------------------------
S.GetPSByIDA tax
bne .10
>LDYAI TSKMGR.TABLE
clc
rts
.10 sta ZPQuickPtr1 Store requested PID
lda #K.PS.MAX
sta ZPQuickPtr1+1
>LDYAI TSKMGR.TABLE+S.PS.SIZE
>STYA ZPQuickPtr2
.1 lda (ZPQuickPtr2)
bpl .2
ldy #S.PS.ID
lda (ZPQuickPtr2),y
cmp ZPQuickPtr1
beq .8
.2 dec ZPQuickPtr1+1
beq .9
lda ZPQuickPtr2
clc
adc #S.PS.SIZE
sta ZPQuickPtr2
bcc .1
inc ZPQuickPtr2+1
bra .1
.8 >LDYA ZPQuickPtr2
clc
rts
.9 sec
rts
*--------------------------------------
* PRIVATE
*--------------------------------------
* S.CreateChildProcessA
* in :
* A = Parent PSID
* out :
* X = PSID
* Y,A = PTR to S.PS
* we cannot use ZPQuickPtrs
* because of calling S.PStrCpyA & S.DupEnvA
*--------------------------------------
S.CreateChildProcessA
jsr S.GetPSByIDA
bcs .9
>STYA R.AX
>LDYAI TSKMGR.TABLE+S.PS.SIZE
>STYA R.BX
ldx #K.PS.MAX
.1 lda (R.BX)
bpl .3
lda R.BL
clc
adc #S.PS.SIZE
sta R.BL
bcc .2
inc R.BH
.2 dex
bne .1
lda #TSKMGR.ERROOS
sec
rts
.9 lda #TSKMGR.ERRNSP
sec
rts
.3 lda #S.PS.F.INUSE
sta (R.BX)
ldy #S.PS.ID
lda (R.AX),y
ldy #S.PS.PID
sta (R.BX),y
inc TSKMGR.LASTID
bne .4
inc TSKMGR.LASTID Ensure PSID not 0
.4 lda TSKMGR.LASTID
ldy #S.PS.ID
sta (R.BX),y
lda #0
ldy #S.PS.hCS
.5 sta (R.BX),y Blank Everything in this S.PS
iny
cpy #S.PS.SIZE
bne .5
ldy #S.PS.hPREFIX copy hPREFIX...
lda (R.AX),y
jsr S.PStrCpyA
bcs .99
ldy #S.PS.hPREFIX
sta (R.BX),y
ldy #S.PS.hENV ...and hENV from parent PS
lda (R.AX),y
jsr S.DupEnvA
bcs .99
ldy #S.PS.hENV
sta (R.BX),y
ldy #S.PS.hINDEV
lda (R.AX),y
sta (R.BX),y
ldy #S.PS.hOUTDEV
lda (R.AX),y
sta (R.BX),y
ldy #S.PS.hERRDEV
lda (R.AX),y
sta (R.BX),y
ldy #S.PS.ID
lda (R.BX),y
tax Exit with X=PSID
>LDYA R.BX And Y,A=S.PS
clc
rts
.99 sec
rts
*--------------------------------------
* S.InitProcessA
* In :
* A = hMem To Full Cmd Line
*--------------------------------------
* LS(2)
* 0 : hMem to ENVPATH value
* 1 : hMem to FULLPATH value
*--------------------------------------
S.InitProcessA >ADDLOCAL 2
>PUSHA Push Cmd Line
>PUSHBI $20 Push SEP=' '
>PUSHBI 0 Push 0 for getting CMD And ARGS
jsr S.PStrGetTkn
bcs .99 OOM error
ldy #S.PS.hCMD
sta (TSKMGR.pNewPS),y
>PUSHA push CMD for S.FileSearch
txa
ldy #S.PS.hARGS
sta (TSKMGR.pNewPS),y set ARGS hMem (0 if none)
>PUSHWI ENV.PATH push ENVNAME=PATH
ldy #S.PS.hENV
lda (TSKMGR.pNewPS),y
>PUSHA
jsr S.GetEnvVarP get value for ENV=PATH
bcs .99
>STAL 0 save VALUE hMem for discard
>PUSHA A=PStr to ENV Value
jsr S.FileSearch find File in %PATH%
bcs .98
>STAL 1 save FULLPATH hMem for discard
pha
jsr S.SysScrPPSTRA
pla
jsr S.LoadBinA A = BinPath hMem
bcs .97
>STYA Kernel.JMP save PTR to Code Segment
txa
ldy #S.PS.hCS
sta (TSKMGR.pNewPS),y save CS hMem in TSKSLOT
>LDYA TSKMGR.pNewPS
ldx #TSKMGR.INIT
jsr Kernel.BINCALL Call INIT function
bcs .97
jsr .97
clc
rts
.97 pha save ERR
>LDAL 1
jsr S.FreeMemA
pla
.98 pha save ERR
>LDAL 0
jsr S.FreeMemA
pla
.99 >REMLOCAL 2
sec
rts
*--------------------------------------
* S.QuitProcessA
* In : A = PID to Quit (call TSKMGR.QUIT)
*--------------------------------------
S.QuitProcessA jsr S.GetPSByIDA
bcs .9
>STYA ZPQuickPtr1
ldy #S.PS.hCS
lda (ZPQuickPtr1),y
jsr S.GetMemPtrA
>STYA Kernel.JMP
>LDYA ZPQuickPtr1
ldx #TSKMGR.QUIT
jsr Kernel.BINCALL Call QUIT function
clc
rts
.9 bra *
*--------------------------------------
* S.FreeProcessA
* In : A = PID to free
*--------------------------------------
S.FreeProcessA jsr S.GetPSByIDA
bcs .9
>STYA ZPQuickPtr1
ldy #S.PS.hARGS
lda (ZPQuickPtr1),y
beq .1
jsr S.FreeMemA
.1 ldy #S.PS.hCMD
lda (ZPQuickPtr1),y
beq .2
jsr S.FreeMemA
.2 ldy #S.PS.hENV
lda (ZPQuickPtr1),y
beq .3
jsr S.FreeMemA
.3 ldy #S.PS.hPREFIX
lda (ZPQuickPtr1),y
beq .4
jsr S.FreeMemA
.4 ldy #S.PS.hDS
lda (ZPQuickPtr1),y
beq .5
jsr S.FreeMemA
.5 ldy #S.PS.hCS
lda (ZPQuickPtr1),y
beq .8
jsr S.FreeMemA
.8 lda #0
sta (ZPQuickPtr1) Mark TSKSLOT as free
clc
rts
.9 bra *
*--------------------------------------
* S.IsPSRunningA
* In :
* A = PID
* Out :
* CC = Running
* CS = no PS
*--------------------------------------
S.IsPSRunningA pha save PID
ldx #K.PS.MAX
>LDYAI TSKMGR.TABLE+S.PS.SIZE
>STYA ZPQuickPtr1
.1 lda (ZPQuickPtr1)
bpl .2
ldy #S.PS.ID
pla
pha
cmp (ZPQuickPtr1),y
beq .8
lda ZPQuickPtr1
clc
adc #S.PS.SIZE
sta ZPQuickPtr1
bcc .2
inc ZPQuickPtr2+1
.2 dex
bne .1
pla
sec
rts
.8 pla
clc
rts
*--------------------------------------
TSKMGR.COUNT .BS 1
TSKMGR.LASTID .BS 1
*--------------------------------------
MSG.NEWPS >PSTRING "\nTskMgr:"
MAN
SAVE SYS/KERNEL.S.TSK
LOAD SYS/KERNEL.S
ASM
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