mirror of https://github.com/A2osX/A2osX.git
280 lines
5.7 KiB
Plaintext
280 lines
5.7 KiB
Plaintext
NEW
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AUTO 3,1 Enable MASM3 auto line num
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.LIST OFF
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.OP 65C02 Target CPU, must match CPU level in header
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.OR $2000 usualy $2000, but any value > $100 allowed
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.TF BIN/CSH
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*--------------------------------------
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.INB INC/MACROS.I
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.INB INC/A2OSX.I
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.INB INC/MLI.I
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.INB INC/MLI.E.I
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*--------------------------------------
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.INB USR/SRC/BIN/CSH.E
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*--------------------------------------
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* Zero Page Segment, up to 32 bytes
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*--------------------------------------
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.DUMMY
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.OR ZPBIN
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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
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ZPPtr2 .BS 2
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ZPPtr3 .BS 2
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ZPVarID .BS 2
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ZPVarData .BS 6
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ZPVarType .BS 1
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ArgIndex .BS 1
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ZS.END .ED
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*--------------------------------------
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* File Header (16 Bytes)
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*--------------------------------------
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CS.START cld
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jmp (.1,x)
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.DA #$61 6502,Level 1 (65c02)
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.DA #1 BIN Layout Version 1
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.DA #0 S.PS.F.EVENT
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.DA #0
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.DA CS.END-CS.START Code Size (without Constants)
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.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
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.DA 0
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*--------------------------------------
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* Relocation Table
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*--------------------------------------
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.1 .DA CS.INIT
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.DA CS.RUN
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.DA CS.DOEVENT
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.DA CS.QUIT
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L.MSG.GREETINGS .DA MSG.GREETINGS
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L.MSG.USAGE .DA MSG.USAGE
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L.MSG.ECHOCRLF .DA MSG.ECHOCRLF
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L.MSG.DEBUG .DA MSG.DEBUG
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L.MSG.ERR .DA MSG.ERR
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.INB USR/SRC/BIN/CSH.R
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.DA 0
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*--------------------------------------
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* Called once at process creation
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* Put code for loading LIB here
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*--------------------------------------
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CS.INIT clc
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CS.INIT.RTS rts
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*--------------------------------------
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* Called until exit with CS
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* if RUN exits with CC, RN entered again
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*--------------------------------------
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CS.RUN >PUSHWI K.VER
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>PUSHBI 2
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>LDYA L.MSG.GREETINGS
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>SYSCALL printf
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bcs CS.INIT.RTS
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jsr CS.RUN.ARGS
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bcs CS.INIT.RTS
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jsr CSH.Init
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bcs CS.INIT.RTS
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.1 >SLEEP
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>LDA.G bDebug
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bpl .2
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jsr PrintDebugMsg
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.2 >LDA.G bTrace
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bpl .3
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>LDYA ZPFileBufPtr
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jsr PrintTraceMsg
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.3 jsr CSH.Run
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bcc .1
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cmp #MLI.E.EOF
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beq .8
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pha
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jsr PrintErrMsg
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pla
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sec
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rts
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.8 lda #0 Exit Code = Success
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sec
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rts
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*--------------------------------------
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CS.RUN.ARGS inc ArgIndex
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lda ArgIndex
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>SYSCALL ARGV
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bcs .7
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>STYA ZPPtr1
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lda (ZPPtr1)
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cmp #'-'
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bne .4
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ldy #1
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lda (ZPPtr1),y
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ldx #OptionVars-OptionList-1
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.1 cmp OptionList,x
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beq .2
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dex
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bpl .1
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bra .90
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.2 ldy OptionVars,x
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lda #$ff
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sta (pData),y
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bra CS.RUN.ARGS
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.4 >LDA.G hFileBuf
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bne .90
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>PUSHWZ Aux type
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>PUSHBI S.FI.T.TXT
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>PUSHBI O.RDONLY
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>LDYA ZPPtr1
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>SYSCALL LoadTxtFile
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bcs .9
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txa
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>STA.G hFileBuf
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>SYSCALL GetMemPtr
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>STYA ZPFileBuf
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>STYA ZPFileBufPtr
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bra CS.RUN.ARGS
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.7 >LDA.G hFileBuf
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beq .90
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clc
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rts
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.90 >PUSHBI 0
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>LDYA L.MSG.USAGE
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>SYSCALL printf
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lda #E.SYN
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sec QUIT Process
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.9 rts
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*--------------------------------------
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CS.DOEVENT sec
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rts
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*--------------------------------------
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CS.QUIT jsr CSH.Quit
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clc
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rts
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*--------------------------------------
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PrintErrMsg >LDYA ZPFileBuf
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>STYA ZPPtr1
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stz ZPPtr2
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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
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>STYA ZPPtr3 save line start
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.20 lda (ZPPtr1)
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beq .4 EoF
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inc ZPPtr1
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bne .3
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inc ZPPtr1+1
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.3 cmp #C.CR
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bne .20 Scan until EoL
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ldx ZPPtr1
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cpx ZPFileBufPtr
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lda ZPPtr1+1
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sbc ZPFileBufPtr+1
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bcc .1 not this line....
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.4 >LDA.G bTrace
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bmi .5
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jsr PrintTraceMsg.3
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.5 lda ZPPtr3
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cmp ZPFileBufPtr
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bne .6
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lda ZPPtr3+1
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cmp ZPFileBufPtr+1
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beq .8
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.6 >PUSHBI '-'
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ldy #S.PS.hStdErr
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lda (pPS),y
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>SYSCALL fputc
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inc ZPPtr3
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bne .5
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inc ZPPtr3+1
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bra .5
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.8 >PUSHW ZPPtr2 Line counter
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>PUSHBI 2
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>PUSHW L.MSG.ERR
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ldy #S.PS.hStdErr
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lda (pPS),y
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>SYSCALL fprintf
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rts
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*--------------------------------------
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PrintDebugMsg >PUSHW pStack
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>PUSHBI 2
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>LDYA L.MSG.DEBUG
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>SYSCALL printf
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rts
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*--------------------------------------
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PrintTraceMsg >STYA ZPPtr3
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PrintTraceMsg.3 >PUSHBI '>'
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ldy #S.PS.hStdErr
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lda (pPS),y
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>SYSCALL fputc
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ldy #$ff
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.1 iny
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lda (ZPPtr3),y
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beq .8
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cmp #C.CR
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beq .8
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phy
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>PUSHA
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ldy #S.PS.hStdErr
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lda (pPS),y
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>SYSCALL fputc
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ply
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bra .1
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.8 >PUSHBI 0
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>PUSHW L.MSG.ECHOCRLF
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ldy #S.PS.hStdErr
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lda (pPS),y
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>SYSCALL fprintf
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rts
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*--------------------------------------
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.INB USR/SRC/BIN/CSH.S.CORE
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*--------------------------------------
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CS.END
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*--------------------------------------
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* Initialized DATA
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*--------------------------------------
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MSG.Greetings .AZ "\r\nCSH-Shell %d.%d\r\n\r\n"
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MSG.USAGE .AS "Usage : CSH <option> file\r\n"
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.AS " -D : Debug Mode\r\n"
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.AS " -T : Trace On"
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MSG.ECHOCRLF .AZ "\r\n"
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MSG.DEBUG .AZ "DEBUG:pStack=%H\r\n"
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MSG.ERR .AZ "^\r\nLine #%D:"
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*--------------------------------------
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OptionList .AS "DdTt"
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OptionVars .DA #bDebug,#bDebug,#bTrace,#bTrace
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*--------------------------------------
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.INB USR/SRC/BIN/CSH.I
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*--------------------------------------
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.DUMMY
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.OR 0
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DS.START .INB USR/SRC/BIN/CSH.D
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bDebug .BS 1
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bTrace .BS 1
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DS.END
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.ED
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*--------------------------------------
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MAN
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SAVE USR/SRC/BIN/CSH.S
|
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ASM
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