A2osX/SYS/KERNEL.S.STRVX.txt
2021-05-15 16:35:24 +02:00

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NEW
AUTO 3,1
*--------------------------------------
STRVX.StrVFree jsr K.FreeMem
clc
rts
*--------------------------------------
STRVX.StrVNew jsr K.GetMem
bcs .9
>STYA ZPPtr1 strV
lda #0
sta (ZPPtr1)
txa
* clc
.9 rts
*--------------------------------------
STRVX.StrVSet jsr STRVX.GetID
bcs .7
ldy #$ff
.1 iny
jsr SHARED.FORPNTgY
bne .1
tya
* clc
adc #4 LEN+IDlo+IDhi+\0
bcs .9
cmp (ZPPtr1)
bne .4
lda ZPPtr1 Same Length, replace
clc
adc #3
sta ZPPtr1
bcc .2
inc ZPPtr1+1
.2 ldy #$ff
.3 iny
jsr SHARED.FORPNTgY
sta (ZPPtr1),y
bne .3
clc
.9 rts
*--------------------------------------
.4 >LDYA ZPPtr1
>STYA ZPPtr2
jsr STRVX.Next
.40 lda (ZPPtr1)
beq .6
tax
ldy #0
.5 lda (ZPPtr1),y
sta (ZPPtr2),y
iny
dex
bne .5
jsr SHARED.AddY2P1
jsr SHARED.AddY2P2
bra .40
.6 >LDYA ZPPtr2
>STYA ZPPtr1
*--------------------------------------
.7 ldy #$ff
.8 iny
jsr SHARED.FORPNTgY
bne .8
tya
clc
adc #4
bcs .99
sta (ZPPtr1)
ldy #1
lda TXTPTR
sta (ZPPtr1),y
iny
lda TXTPTR+1
sta (ZPPtr1),y
lda ZPPtr1
clc
adc #3
sta ZPPtr1
bcc .10
inc ZPPtr1+1
.10 ldy #$ff
.11 iny
jsr SHARED.FORPNTgY
sta (ZPPtr1),y
bne .11
iny
sta (ZPPtr1),y StrV Ending \0
clc
rts
.99 lda #E.OOM
sec
rts
*--------------------------------------
STRVX.StrVGet jsr STRVX.GetID
bcs .9
lda ZPPtr1
* clc
adc #3
sta ZPPtr1
bcc .1
inc ZPPtr1+1
.1 ldy #$ff
.5 iny
lda (ZPPtr1),y
jsr SHARED.FORPNTpY
bne .5
>LDYA FORPNT
clc
rts
.8 >LDYA ZPPtr1
clc
.9 rts
*--------------------------------------
STRVX.GetID jsr K.GetMemPtr
>STYA ZPPtr1 strV
.1 lda (ZPPtr1)
beq .9
ldy #1
lda (ZPPtr1),y
cmp TXTPTR
bne .2
iny
lda (ZPPtr1),y
cmp TXTPTR+1
beq .8
.2 jsr STRVX.Next
bra .1
.8 clc
rts
.9 lda #E.NOKEY
sec
rts
*--------------------------------------
STRVX.Next lda (ZPPtr1)
clc
adc ZPPtr1
sta ZPPtr1
bcc .8
inc ZPPtr1+1
.8 rts
*--------------------------------------
MAN
SAVE usr/src/sys/kernel.s.strvx
LOAD usr/src/sys/kernel.s
ASM