A2osX/BIN/CSH.S.txt

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NEW
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AUTO 3,1 Enable MASM3 auto line num
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.LIST OFF
.OP 65C02 Target CPU, must match CPU level in header
.OR $2000 usualy $2000, but any value > $100 allowed
.TF BIN/CSH
*--------------------------------------
.INB INC/MACROS.I
.INB INC/A2OSX.I
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.INB INC/MLI.I
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.INB INC/MLI.E.I
*--------------------------------------
.INB USR/SRC/BIN/CSH.E
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*--------------------------------------
* Zero Page Segment, up to 32 bytes
*--------------------------------------
.DUMMY
.OR ZPBIN
ZS.START
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ZPFileBuf .BS 2
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ZPFileBufPtr .BS 2
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ZPCSHConst .BS 2
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ZPCSHStack .BS 2
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ZPPtr1 .BS 2
ZPPtr2 .BS 2
ZPPtr3 .BS 2
ZPVarID .BS 2
ZPVarType .BS 1
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ZPVarData .BS 6
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ZS.END .ED
*--------------------------------------
* File Header (16 Bytes)
*--------------------------------------
CS.START cld
jmp (.1,x)
.DA #$61 6502,Level 1 (65c02)
.DA #1 BIN Layout Version 1
.DA #0 S.PS.F.EVENT
.DA #0
.DA CS.END-CS.START Code Size (without Constants)
.DA DS.END-DS.START Data SegmentSize
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.DA #64 Stack Size
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.DA #ZS.END-ZS.START Zero Page Size
.DA 0
*--------------------------------------
* Relocation Table
*--------------------------------------
.1 .DA CS.INIT
.DA CS.RUN
.DA CS.DOEVENT
.DA CS.QUIT
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L.MSG.GREETINGS .DA MSG.GREETINGS
L.MSG.ECHOCRLF .DA MSG.ECHOCRLF
L.MSG.ERR .DA MSG.ERR
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.INB USR/SRC/BIN/CSH.R
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.DA 0
*--------------------------------------
* Called once at process creation
* Put code for loading LIB here
*--------------------------------------
CS.INIT clc
rts
*--------------------------------------
* Called until exit with CS
* if RUN exits with CC, RN entered again
*--------------------------------------
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CS.RUN lda #$ff
>STA.G bTrace
>PUSHWI K.VER
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>PUSHBI 2
>LDYA L.MSG.GREETINGS
>SYSCALL printf
bcs .99
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jsr CSH.Init
bcs .99
ldy #S.PS.ARGC
lda (pPS),y
beq .90 no arg, usage
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>PUSHWZ Aux type
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>PUSHBI S.FI.T.TXT
>PUSHBI O.RDONLY
lda #1
>SYSCALL ArgV
>SYSCALL LoadTxtFile
bcs .99
txa
>STA.G hFileBuf
>SYSCALL GetMemPtr
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>STYA ZPFileBuf
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>STYA ZPFileBufPtr
.1 >SLEEP
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>LDA.G bTrace
bpl .2
>LDYA ZPFileBufPtr
jsr PrintTraceMsg
.2 jsr CSH.Run
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bcc .1
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cmp #MLI.E.EOF
beq .8
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pha
jsr PrintErrMsg
pla
sec
rts
.8 lda #0
sec
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rts
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.90 lda #E.SYN Exit Code = Succes
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sec QUIT Process
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.99 rts
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*--------------------------------------
* Called if option S.PS.F.EVENT enabled in Header
* Timer Event : every 10th seconds
*--------------------------------------
CS.DOEVENT sec
rts
*--------------------------------------
* Called once, when RUN exited with CS
* Put code for unloading LIB here
*--------------------------------------
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CS.QUIT jsr CSH.Quit
clc
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rts
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*--------------------------------------
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PrintErrMsg >LDYA ZPFileBuf
>STYA ZPPtr1
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stz ZPPtr2
stz ZPPtr2+1 Line counter
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.1 inc ZPPtr2
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bne .2
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inc ZPPtr2+1
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.2 >LDYA ZPPtr1
>STYA ZPPtr3 save line start
.20 lda (ZPPtr1)
beq .4 EoF
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inc ZPPtr1
bne .3
inc ZPPtr1+1
.3 cmp #C.CR
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bne .20 Scan until EoL
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ldx ZPPtr1
cpx ZPFileBufPtr
lda ZPPtr1+1
sbc ZPFileBufPtr+1
bcc .1 not this line....
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.4 >LDA.G bTrace
bmi .5
jsr PrintTraceMsg.3
.5 lda ZPPtr3
cmp ZPFileBufPtr
bne .6
lda ZPPtr3+1
cmp ZPFileBufPtr+1
beq .8
.6 >PUSHBI '-'
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ldy #S.PS.hStdErr
lda (pPS),y
>SYSCALL fputc
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inc ZPPtr3
bne .5
inc ZPPtr3+1
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bra .5
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.8 >PUSHW ZPPtr2 Line counter
>PUSHBI 2
>PUSHW L.MSG.ERR
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ldy #S.PS.hStdErr
lda (pPS),y
>SYSCALL fprintf
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rts
*--------------------------------------
PrintTraceMsg >STYA ZPPtr3
PrintTraceMsg.3 >PUSHBI '>'
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ldy #S.PS.hStdErr
lda (pPS),y
>SYSCALL fputc
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ldy #$ff
.1 iny
lda (ZPPtr3),y
beq .8
cmp #C.CR
beq .8
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phy
>PUSHA
ldy #S.PS.hStdErr
lda (pPS),y
>SYSCALL fputc
ply
bra .1
.8 >PUSHBI 0
>PUSHW L.MSG.ECHOCRLF
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ldy #S.PS.hStdErr
lda (pPS),y
>SYSCALL fprintf
rts
*--------------------------------------
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.INB USR/SRC/BIN/CSH.S.CORE
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*--------------------------------------
CS.END
*--------------------------------------
* Initialized DATA
*--------------------------------------
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MSG.Greetings .AZ "\r\nCSH-Shell %d.%d\r\n\r\n"
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MSG.ECHOCRLF .AZ "\r\n"
MSG.ERR .AZ "^\r\nLine #%D:"
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*--------------------------------------
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.INB USR/SRC/BIN/CSH.I
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*--------------------------------------
.DUMMY
.OR 0
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DS.START .INB USR/SRC/BIN/CSH.D
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bTrace .BS 1
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DS.END
.ED
*--------------------------------------
MAN
SAVE USR/SRC/BIN/CSH.S
ASM