A2osX/SYS/KERNEL.S.SLISTX.txt
2021-05-04 19:31:21 +02:00

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NEW
AUTO 3,1
*--------------------------------------
ZPSListDataOfs .EQ ZPMEMMGR+8
ZPSListDataLen .EQ ZPMEMMGR+10
*--------------------------------------
SLIST.KeyLen .BS 1
SLIST.DataLen .BS 2
SLIST.nDataCnt .BS 2
SLIST.nBufCnt .BS 2
SLIST.bStr .BS 1
SLIST.b0 .BS 1
SLIST.KeyID .BS 2
*--------------------------------------
SLISTX.GetData jsr SLIST.Select
jsr SLIST.SkipKey
jsr SLIST.GetDataLen
lda SLIST.DataLen
sec
sbc ZPSListDataOfs Offset
eor #$ff
sta SLIST.nDataCnt
lda SLIST.DataLen+1
sbc ZPSListDataOfs+1
eor #$ff
sta SLIST.nDataCnt+1 Data remaining
bcc .99 Offset Beyond DataLen
lda ZPSListDataOfs Skip to Offset
ldx ZPSListDataOfs+1
jsr SLIST.SkipDataAX
stz SLIST.b0
lda FORPNT
ora FORPNT+1
bne .12 buffer provided
>LDYA SLIST.DataLen
iny
bne .11
inc +1 for ending 0
sec
ror SLIST.b0
.11 ldx #SYS.GetMem
jsr K.SYSCALL2.MAIN !!! Get a buffer In MAIN Mem !!!
bcs .9
stx .88+1
>STYA FORPNT
.12 lda ZPSListDataLen
ora ZPSListDataLen+1
sec
beq .1 String Mode
lda ZPSListDataLen
eor #$ff
sta SLIST.nBufCnt
lda ZPSListDataLen+1
eor #$ff
sta SLIST.nBufCnt+1
clc
.1 ror SLIST.bStr
stz ZPSListDataLen
stz ZPSListDataLen+1
.2 inc SLIST.nDataCnt
bne .3
inc SLIST.nDataCnt+1
beq .80
.3 bit SLIST.bStr
bmi .4 String mode : until CR
inc SLIST.nBufCnt
bne .4
inc SLIST.nBufCnt+1
beq .80 not string mode : until end of buffer
.4 jsr BLISTX.GetNByte
bit SLIST.bStr
bpl .5
cmp #C.CR
beq .81
.5 jsr SHARED.FORPNTpn
inc ZPSListDataLen
bne .2
inc ZPSListDataLen+1
bra .2
.99 lda #E.EMPTYKEY
sec
.9 rts
.80 lda SLIST.bStr
ora SLIST.b0
bpl .82
.81 lda #0
jsr SHARED.FORPNTpn
.82 >LDYA ZPSListDataLen
.88 ldx #$ff SELF MODIFIED
clc
rts
*--------------------------------------
SLISTX.AddData jsr SLIST.Select
jsr SLIST.SkipKey
ldy iByte
lda (DBlkPtr),y
pha
clc
adc ZPSListDataLen
sta (DBlkPtr),y
php
jsr BLISTX.2NByte skip LEN lo
plp
ldy iByte
lda (DBlkPtr),y
pha
adc ZPSListDataLen+1
sta (DBlkPtr),y
jsr BLISTX.2NByte skip LEN hi
plx
pla
jsr SLIST.SkipDataAX
lda ZPSListDataLen
eor #$ff
sta ZPSListDataLen
lda ZPSListDataLen+1
eor #$ff
sta ZPSListDataLen+1
sec
.1 inc ZPSListDataLen
bne .2
inc ZPSListDataLen+1
beq .8
.2 jsr SHARED.FORPNTgn
bcc .3
jsr BLISTX.SetBlkByte override ending 0, already allocated
clc
bra .1
.3 jsr BLISTX.AddByte
bcc .1
rts
.8 lda #0
jmp BLISTX.AddByte Add an extra 0 to stop Search here
*--------------------------------------
SLISTX.SetData jsr SLIST.Select
jsr SLIST.SkipKey
jsr SLIST.GetDataLen
lda SLIST.DataLen
cmp ZPSListDataLen
bne .9
ldx SLIST.DataLen+1
cpx ZPSListDataLen+1
bne .9
eor #$ff
sta SLIST.nDataCnt
txa
eor #$ff
sta SLIST.nDataCnt+1
.1 inc SLIST.nDataCnt
bne .2
inc SLIST.nDataCnt+1
beq .8
.2 jsr SHARED.FORPNTgn
jsr BLISTX.SetBlkByte
bra .1
.8 clc
rts
.9 lda #E.DATALEN
sec
rts
*--------------------------------------
SLISTX.GetByID jsr SLIST.Select
jsr BLISTX.GetNByte
tax
beq .9
ldy #0
.1 phy
jsr BLISTX.GetNByte
ply
jsr SHARED.FORPNTpn
iny
dex
bne .1
txa lda #0
jsr SHARED.FORPNTpn
jsr SLIST.SkipData
>LDYA KeyID
clc
rts
.9 lda #E.NOKEY
sec
rts
*--------------------------------------
SLISTX.NewKey jsr SLIST.Search
bcc .99
>LDYA KeyID
>STYA SLIST.KeyID End of list
lda SLIST.KeyLen
jsr BLISTX.SetBlkByte override ending 0, already allocated
ldy #0
.1 jsr SHARED.TXTPTRgY
jsr BLISTX.AddByte
bcs .9
iny
cpy SLIST.KeyLen
bne .1
lda #0 Data Len lo = 0
jsr BLISTX.AddByte
bcs .9
lda #0 Data Len hi = 0
jsr BLISTX.AddByte
bcs .9
lda #0 Ending Len = 0
jsr BLISTX.AddByte
bcs .9
>LDYA SLIST.KeyID
ldx SLIST.KeyLen
* clc
rts
.99 lda #E.DUPKEY
sec
.9 rts
*--------------------------------------
SLISTX.Lookup jsr SLIST.Search
bcs .9
ldx SLIST.KeyLen
.9 rts
*--------------------------------------
* PRIVATE
*--------------------------------------
SLIST.Search jsr K.GetMemPtr
>STYA IBlkPtr
lda (IBlkPtr)
jsr K.GetMemPtr
>STYA DBlkPtr
ldy #$ff
.1 iny
jsr SHARED.TXTPTRgY
beq .11
jsr SHARED.IsIDValid
bcc .1
.11 sty SLIST.KeyLen
stz iByte
stz iBlk
.2 >LDYA KeyID
>STYA SLIST.KeyID
ldy iByte
lda (DBlkPtr),y
beq .9
cmp SLIST.KeyLen
bne .5
jsr BLISTX.GetNByte Skip Len
ldy #0
.3 phy
jsr BLISTX.GetNByte
sta .4+1
ply
jsr SHARED.TXTPTRgY
.4 cmp #$ff SELF MODIFIED
bne .5
iny
cpy SLIST.KeyLen
bne .3
>LDYA SLIST.KeyID
clc
rts
.5 >LDYA SLIST.KeyID
jsr SLIST.Select.I move back...
jsr SLIST.Next
bra .2
.9 lda #E.NOKEY
sec
rts
*--------------------------------------
SLIST.Select jsr K.GetMemPtr
>STYA IBlkPtr
>LDYA TXTPTR
SLIST.Select.I >STYA KeyID
ldy iBlk
lda (IBlkPtr),y
jsr K.GetMemPtr
>STYA DBlkPtr
rts
*--------------------------------------
SLIST.Next jsr SLIST.SkipKey
SLIST.SkipData jsr SLIST.GetDataLen
lda SLIST.DataLen
ldx SLIST.DataLen+1
SLIST.SkipDataAX
clc
adc iByte
sta iByte
txa
adc iBlk
sta iBlk
tay
lda (IBlkPtr),y
jsr K.GetMemPtr
>STYA DBlkPtr
rts
*--------------------------------------
SLIST.SkipKey ldy iByte
lda (DBlkPtr),y Get KeyLen
sec
adc iByte
sta iByte
bcc .8
jmp BLISTX.2NBlk
.8 rts
*--------------------------------------
SLIST.GetDataLen
jsr BLISTX.GetNByte Get DataLenLo
sta SLIST.DataLen
jsr BLISTX.GetNByte Get DataLenHI
sta SLIST.DataLen+1
rts
*--------------------------------------
MAN
SAVE usr/src/sys/kernel.s.slistx
LOAD usr/src/sys/kernel.s
ASM