mirror of
https://github.com/A2osX/A2osX.git
synced 2024-08-01 00:29:12 +00:00
451 lines
7.8 KiB
Plaintext
451 lines
7.8 KiB
Plaintext
NEW
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PREFIX /A2OSX.BUILD
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AUTO 4,1
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*--------------------------------------
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PS.Flags .BS 1
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PS.Args .BS 2
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*/--------------------------------------
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* # Exec
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* ## C
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* `int exec(const char* argv[], short int flags);`
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* ## ASM
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* `>PUSHB flags`
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* `>LDYA argv`
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* `>SYSCALL execv`
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* ## RETURN VALUE
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* A = Child PSID
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*\--------------------------------------
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K.Exec >STYA PS.Args
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>PULLB PS.Flags
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jsr PS.CreateChild Child S.PS at ZPPtr3
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bcs .9
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sta .8+1
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>LDYA PS.Args
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jsr PS.DupArgs
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ldy #S.PS.hARGV
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sta (ZPPtr3),y
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pha
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dey S.PS.ARGC
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txa
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sta (ZPPtr3),y
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pla
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>SYSCALL GetMemPtr
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jsr PS.Load
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bcc .8
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pha save error code
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lda .8+1
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jsr CORE.PSFree.A
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pla get back error code
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sec
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rts
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.8 lda #$ff self modified
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.9 rts
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*--------------------------------------
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* PS.CreateChild
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* in :
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* out :
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* A = PSID
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* we cannot use ZPPtrs1 & 2
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* because of calling K.NewStr.YA & PS.Dup
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*--------------------------------------
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PS.CreateChild ldx #0
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.1 lda PS.Table.PID,x
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beq .4 Found an empty slot
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inx
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cpx #K.PS.MAX
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bne .1
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lda #E.OOH
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sec
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rts
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.99 plx
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rts
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.4 inc CORE.LastPSID Get a PSID not already running
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beq .4 not = 0
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lda CORE.LastPSID
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jsr CORE.GetPS Y=PS Index, X,A unmodified
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bcc .4 running...loop
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lda CORE.LastPSID
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sta PS.Table.PID,x
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phx save PS Index
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>LDYAI S.PS
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jsr K.GetMem0 Blank Everything in this S.PS
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bcs .99
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>STYA ZPPtr3
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txa
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plx
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sta PS.Table.hPS,x
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jsr PS.SetMemOwner Set Ownership
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ldy #S.PS.PID
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lda CORE.LastPSID
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sta (ZPPtr3),y
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lda #S.PS.F.DUPENV
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bit PS.Flags need to create ENV & Prefix ?
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beq .6 no...
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sta (ZPPtr3) Mark this PS with DUPENV flag
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ldy #S.PS.hPREFIX copy hPREFIX...
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lda (pPs),y
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jsr K.GetMemPtr
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jsr K.NewStr
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bcs .9
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jsr PS.SetMemOwner Set Ownership
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txa
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ldy #S.PS.hPREFIX
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sta (ZPPtr3),y
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ldy #S.PS.hENV ...and hENV from parent PS
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lda (pPs),y
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jsr PS.DupEnv
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bcs .9
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ldy #S.PS.hENV
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sta (ZPPtr3),y
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bra .8
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.6 ldy #S.PS.hPREFIX reuse same hPREFIX...
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lda (pPs),y
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sta (ZPPtr3),y
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ldy #S.PS.hENV ...and hENV from parent PS
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lda (pPs),y
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sta (ZPPtr3),y
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.8 ldy #S.PS.hStdIn
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.81 lda (pPs),y
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sta (ZPPtr3),y
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iny
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cpy #S.PS.hStdErr+1
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bne .81
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ldy #S.PS.PID
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lda (pPs),y
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ldy #S.PS.PPID
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sta (ZPPtr3),y
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lda #S.PS.F.HOLD
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bit PS.Flags
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beq .82
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ora (pPs)
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sta (pPs) HOLD parent PS
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.82 lda #S.PS.F.INIT
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ora (ZPPtr3)
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sta (ZPPtr3) Make this PS Init....
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ldy #S.PS.CPID
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lda CORE.LastPSID
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sta (pPs),y
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clc Exit with A=PSID
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.9 rts
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*--------------------------------------
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PS.Load jsr BIN.Load Y,A=filename full path
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bcs .9
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>STYA ZPPtr4 save PTR to Code Segment
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phy
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ldy #S.PS.ZP.CODE+1
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sta (ZPPtr3),y save pCode HI...
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dey
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pla
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sta (ZPPtr3),y save pCode LO...
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txa
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ldy #S.PS.hCS
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sta (ZPPtr3),y save CS hMem in S.PS
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* jsr K.GetMemByID
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* jsr PS.SetMemOwner Set Ownership
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ldy #H.BIN.F Get Bin S.PS.F
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lda (ZPPtr4),y
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beq .1
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ldy #S.PS.F update PS S.PS.F
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ora (ZPPtr3),y
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sta (ZPPtr3),y
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.1 ldy #H.BIN.DS.SIZE+1
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lda (ZPPtr4),y Load DS.SIZE HI
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tax
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dey
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ora (ZPPtr4),y
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beq .2 DS.SIZE=0...
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lda (ZPPtr4),y
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tay
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txa Y,A = DS.SIZE
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ldx #S.MEM.F.INIT0+S.MEM.F.DATA
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jsr MEM.GetMem.YAX
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bcs .9
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phy
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ldy #S.PS.ZP.DATA+1
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sta (ZPPtr3),y save pData HI...
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dey
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pla
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sta (ZPPtr3),y save pData LO...
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txa
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ldy #S.PS.hDS
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sta (ZPPtr3),y save DS hMem in S.PS
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jsr PS.SetMemOwner Set Ownership
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.2 ldy #H.BIN.SS.SIZE
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lda (ZPPtr4),y Load SS.SIZE
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ldy #S.PS.ZP.STACK
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sta (ZPPtr3),y save pStack LO...
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tay
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bne .3 SS.SIZE.LO=0, set as default $100
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lda #1 SS.SIZE.HI
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.HS 2C bit abs
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.3 lda #0
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ldx #S.MEM.F.ALIGN+S.MEM.F.STACK
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jsr MEM.GetMem.YAX
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bcs .9
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ldy #S.PS.ZP.STACK+1
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sta (ZPPtr3),y save pStack HI...(LO alredy set to Stack TOP)
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txa
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ldy #S.PS.hSS
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sta (ZPPtr3),y save SS hMem in S.PS
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jsr PS.SetMemOwner Set Ownership
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ldy #H.BIN.ZP.SIZE
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lda (ZPPtr4),y
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clc
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adc #8 Add room for 4 saved PTR
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ldy #S.PS.ZP.SIZE
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sta (ZPPtr3),y
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clc
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.9 rts
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*--------------------------------------
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* PS.DupArgs
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* In:
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* Y,A = Ptr To Args[]
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* Out:
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* A = hMem
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* X = Count
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*--------------------------------------
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PS.DupArgs >STYA ZPPtr1
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>STYA ZPPtr2
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lda #1
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sta .7+1
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lda #0
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sta .8+1 len = 1 for array ending 0
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.1 lda (ZPPtr2)
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beq .7
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ldy #0
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.2 iny
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lda (ZPPtr2),y
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bne .2
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tya
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sec
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adc .7+1
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sta .7+1
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bcc .3
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inc .8+1
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.3 tya
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sec
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adc ZPPtr2
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sta ZPPtr2
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bcc .1
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inc ZPPtr2+1
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bra .1
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.7 ldy #$ff SELF MODIFIED
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.8 lda #$ff SELF MODIFIED
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bra PS.DupStrV
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*--------------------------------------
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* PS.DupEnv
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* In:
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* A = ENV hMem To Duplicate
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* Out:
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* A = hMem to new ENV
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* X = Count
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*--------------------------------------
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PS.DupEnv jsr K.GetMemPtr
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>STYA ZPPtr1
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>LDYAI K.ENV.SIZE
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PS.DupStrV jsr K.GetMem
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bcs .9
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>STYA ZPPtr2
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phx save hMem
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jsr PS.SetMemOwner Set Ownership
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ldx #0 Count
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.1 lda (ZPPtr1)
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sta (ZPPtr2)
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beq .8 Ending \0
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inx
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ldy #0
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.2 iny
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lda (ZPPtr1),y
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sta (ZPPtr2),y
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bne .2
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tya
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sec
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adc ZPPtr1
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sta ZPPtr1
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bcc .3
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inc ZPPtr1+1
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.3 tya
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sec
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adc ZPPtr2
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sta ZPPtr2
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bcc .1
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inc ZPPtr2+1
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bra .1
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.8 pla hMem
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clc
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.9 rts
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*--------------------------------------
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PS.SetMemOwner lda CORE.LastPSID
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ldy #S.MEM.OWNERPID
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sta (ZPMEMMGR),y
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rts
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*/--------------------------------------
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* # GetMemStat
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* **In:**
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* Y,A = Ptr to 24 bytes buffer
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* ## RETURN VALUE
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* Buffer filled with memory stats
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*\--------------------------------------
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K.GetMemStat >STYA ZPMemMgrTmp1
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ldy #22
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ldx #6
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.1 lda DevMgr.Stat,x
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sta (ZPMemMgrTmp1),y
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dey
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dex
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bpl .1
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sta SETREADAUX
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ldy #14
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jsr .2
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sta CLRREADAUX
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ldy #6
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.2 ldx #6
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.3 lda Mem.Table,x
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sta (ZPMemMgrTmp1),y
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dey
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dex
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bpl .3
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rts
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*/--------------------------------------
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* # GetPSStatus
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* **In:**
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* A = PID
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* ## RETURN VALUE
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* A = Status Byte
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*\--------------------------------------
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K.GetPSStatus jsr CORE.GetPSByID
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bcs .9
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>STYA ZPPtr1
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lda (ZPPtr1)
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.9 rts
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*/--------------------------------------
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* # GetPSStat
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* **In:**
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* Y,A = Ptr to K.PS.MAX*2+1 bytes buffer
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* ## RETURN VALUE
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* Buffer filled with PS stats
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*\--------------------------------------
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K.GetPSStat >STYA ZPPtr1
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ldx #0
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ldy #1
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lda CORE.InKernelStats
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sta (ZPPtr1),y
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iny
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.1 lda PS.Table.PID,x
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beq .2
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lda PS.Table.hPS,x
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sta (ZPPtr1),y
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iny
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lda PS.Table.Stats,x
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sta (ZPPtr1),y
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iny
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.2 inx
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cpx #K.PS.MAX
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bne .1
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.9 tya
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lsr
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dec
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sta (ZPPtr1)
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rts
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*--------------------------------------
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MAN
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SAVE /A2OSX.SRC/SYS/KERNEL.S.PS
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LOAD /A2OSX.SRC/SYS/KERNEL.S
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ASM
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