NEW AUTO 3,1 .LIST OFF .OP 65C02 .OR $2000 .TF bin/csh *-------------------------------------- .INB inc/macros.i .INB inc/a2osx.i .INB inc/mli.i .INB inc/mli.e.i *-------------------------------------- .INB usr/src/bin/csh.e *-------------------------------------- * Zero Page Segment, up to 32 bytes *-------------------------------------- .DUMMY .OR ZPBIN ZS.START ZPCSHCode .BS 2 ZPCSHConst .BS 2 ZPCSHData .BS 2 ZPCSHStack .BS 2 ZPVarID .BS 2 ZPVarDef .EQ * ZPVarType .BS 1 ZPVarQual .BS 1 ZPVarSizeOf .BS 2 ZPVarDataPtr .BS 2 ZPInputBufPtr .BS 2 bFastCall .BS 1 bCompil .BS 1 hDefine .BS 1 hInclude .BS 1 ZPPtr1 .BS 2 ZPPtr2 .BS 2 ZPPtr3 .BS 2 ArgIndex .BS 1 ZS.END .ED *-------------------------------------- * File Header (16 Bytes) *-------------------------------------- CS.START cld jmp (.1,x) .DA #$61 6502,Level 1 (65c02) .DA #1 BIN Layout Version 1 .DA #0 S.PS.F.EVENT .DA #0 .DA CS.END-CS.START Code Size (without Constants) .DA DS.END-DS.START Data SegmentSize .DA #64 Stack Size .DA #ZS.END-ZS.START Zero Page Size .DA 0 *-------------------------------------- * Relocation Table *-------------------------------------- .1 .DA CS.INIT .DA CS.RUN .DA CS.DOEVENT .DA CS.QUIT L.MSG.GREETINGS .DA MSG.GREETINGS L.MSG.USAGE .DA MSG.USAGE L.MSG.ECHOCRLF .DA MSG.ECHOCRLF L.MSG.DEBUG .DA MSG.DEBUG L.MSG.ERR .DA MSG.ERR L.ENV.INCLUDE .DA ENV.INCLUDE .INB usr/src/bin/csh.r .DA 0 *-------------------------------------- * Called once at process creation * Put code for loading LIB here *-------------------------------------- CS.INIT clc CS.INIT.RTS rts *-------------------------------------- * Called until exit with CS * if RUN exits with CC, RN entered again *-------------------------------------- CS.RUN >PUSHW L.MSG.GREETINGS >PUSHW A2osX.KVER >PUSHBI 2 >SYSCALL PrintF bcs CS.INIT.RTS jsr CS.RUN.ARGS bcs CS.INIT.RTS jsr CSH.Init bcs CS.INIT.RTS .1 >SLEEP >LDA.G bDebug bpl .2 jsr PrintDebugMsg .2 >LDA.G bTrace bpl .3 >LDYA ZPInputBufPtr jsr PrintTraceMsg .3 jsr CSH.Run bcc .1 cmp #MLI.E.EOF beq .8 pha jsr PrintErrMsg pla sec rts .8 lda #0 Exit Code = Success sec rts *-------------------------------------- CS.RUN.ARGS inc ArgIndex lda ArgIndex >SYSCALL ArgV bcs .7 >STYA ZPPtr1 lda (ZPPtr1) cmp #'-' bne .4 ldy #1 lda (ZPPtr1),y ldx #OptionVars-OptionList-1 .1 cmp OptionList,x beq .2 dex bpl .1 bra .90 .2 ldy OptionVars,x lda #$ff sta (pData),y bra CS.RUN.ARGS .4 >LDA.G hFileBuf bne .90 >LDYA ZPPtr1 jsr CS.RUN.LoadFile bcs .9 >STYA ZPInputBufPtr txa >STA.G hFileBuf bra CS.RUN.ARGS .7 >LDA.G hFileBuf beq .90 clc .9 rts .90 >PUSHW L.MSG.USAGE >PUSHBI 0 >SYSCALL PrintF lda #E.SYN sec QUIT Process rts *-------------------------------------- CS.RUN.LoadFile >SYSCALL LoadTxtFile bcs .9 phx txa >SYSCALL GetMemPtr plx .9 rts *-------------------------------------- CS.DOEVENT sec rts *-------------------------------------- CS.QUIT jsr CSH.Quit clc rts *-------------------------------------- PrintErrMsg lda hDefine beq .10 >LDYA.G CSH.SaveDefine >STYA ZPInputBufPtr .10 lda hInclude beq .11 bra .12 .11 >LDA.G hFileBuf .12 >SYSCALL GetMemPtr >STYA ZPPtr1 stz ZPPtr2 stz ZPPtr2+1 Line counter .1 inc ZPPtr2 bne .2 inc ZPPtr2+1 .2 >LDYA ZPPtr1 >STYA ZPPtr3 save line start .20 lda (ZPPtr1) beq .4 EoF inc ZPPtr1 bne .3 inc ZPPtr1+1 .3 cmp #C.CR bne .20 Scan until EoL ldx ZPPtr1 cpx ZPInputBufPtr lda ZPPtr1+1 sbc ZPInputBufPtr+1 bcc .1 not this line.... .4 >LDA.G bTrace bmi .5 jsr PrintTraceMsg.3 .5 lda ZPPtr3 cmp ZPInputBufPtr bne .6 lda ZPPtr3+1 cmp ZPInputBufPtr+1 beq .8 .6 >PUSHBI '-' ldy #S.PS.hStdErr lda (pPS),y >SYSCALL FPutC inc ZPPtr3 bne .5 inc ZPPtr3+1 bra .5 .8 ldy #S.PS.hStdErr lda (pPS),y >PUSHA >PUSHW L.MSG.ERR >PUSHW ZPPtr2 Line counter >PUSHBI 2 >SYSCALL FPrintF rts *-------------------------------------- PrintDebugMsg >LDYA pStack >STYA ZPPtr2 >PUSHW L.MSG.DEBUG >PUSHW ZPPtr2 >PUSHBI 2 >SYSCALL PrintF rts *-------------------------------------- PrintTraceMsg >STYA ZPPtr3 PrintTraceMsg.3 >PUSHBI '>' ldy #S.PS.hStdErr lda (pPS),y >SYSCALL FPutC ldy #$ff .1 iny lda (ZPPtr3),y beq .8 cmp #C.CR beq .8 phy >PUSHA ldy #S.PS.hStdErr lda (pPS),y >SYSCALL FPutC ply bra .1 .8 ldy #S.PS.hStdErr lda (pPS),y >PUSHA >PUSHW L.MSG.ECHOCRLF >PUSHBI 0 >SYSCALL FPrintF rts *-------------------------------------- .INB usr/src/bin/csh.s.core .INB usr/src/bin/csh.s.dir .INB usr/src/bin/csh.s.kw .INB usr/src/bin/csh.s.exp .INB usr/src/bin/csh.s.exec *-------------------------------------- CS.END *-------------------------------------- * Initialized DATA *-------------------------------------- MSG.GREETINGS .AZ "\r\nCSH-Shell %d.%d\r\n\r\n" MSG.USAGE .AS "Usage : CSH