A2osX/BIN/NL.S.txt
2021-07-04 17:09:08 -04:00

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NEW
AUTO 3,1
.LIST OFF
.OP 65C02
.OR $2000
.TF bin/nl
*--------------------------------------
.INB inc/macros.i
.INB inc/a2osx.i
.INB inc/kernel.i
.INB inc/mli.i
.INB inc/mli.e.i
*--------------------------------------
.DUMMY
.OR ZPBIN
ZS.START
ArgIndex .BS 1
ArgPattern .BS 1
ZPPtr1 .BS 2
ZPBufPtr .BS 2
hFile .BS 1
hBuf .BS 1
char .BS 1
LineCount .BS 2
bPause .BS 1
bPipe .BS 1
bIsTTY .BS 1
bNewLine .BS 1
bDummy .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 Segment Size
.DA #16 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.USAGE .DA MSG.USAGE
L.MSG.CRLF .DA MSG.CRLF
L.MSG.LINENUM .DA MSG.LINENUM
.DA 0
*--------------------------------------
CS.INIT clc
rts
*--------------------------------------
CS.RUN stz bPipe
stz bIsTTY
stz bNewLine
inc bNewLine
jsr CS.RUN.ISATTY
jsr CS.RUN.CheckArgs
bcs CS.RUN.LOOP.RTS
stz LineCount
stz LineCount+1
inc LineCount
CS.RUN.LOOP lda bPipe If reading from pipe
bne .2 No ^C/^S handling
ldy #S.PS.hStdIn
lda (pPS),y
>SYSCALL FEOF
bcs .9 I/O Error
tay
bne .1 No char
>SYSCALL GetChar
bcs .9 I/O error
cmp #$03 Ctrl-C
beq .9
cmp #$13 Ctrl-S
bne .1
lda bPause
eor #$ff
sta bPause
bne CS.RUN.LOOP
.1 lda bPause
bne CS.RUN.LOOP
.2 >SLEEP
lda hFile
>SYSCALL GetC
bcs .7
jsr CS.RUN.PRINTBYTE
bra CS.RUN.LOOP
.7 cmp #MLI.E.EOF
bne .9
.8 lda #0 Exit with no Error
.9 sec
CS.RUN.LOOP.RTS rts
*--------------------------------------
CS.RUN.CheckArgs jsr CS.RUN.NextArg
bcs .4
lda (ZPPtr1)
cmp #'-'
beq .1
.11 lda hFile
bne .97
>LDYA ZPPtr1
jsr CS.RUN.OPEN
bcs .9
sta hFile
bra CS.RUN.CheckArgs
.1 ldy #1
lda (ZPPtr1),y
ldx #OptionList.Cnt-1
.2 cmp OptionList,x
beq .3
dex
bpl .2
bra .97
.3 txa
lsr
beq .98
tax
lda #$80
sta bDummy-1,x
bra CS.RUN.CheckArgs
.4 lda hFile
bne .80
ldy #S.PS.hStdIn
lda (pPS),y
tax
lsr
bcs .97
lda Nod.Table.hFD-2,x
>SYSCALL GetMemPtr
>STYA ZPPtr1
lda (ZPPtr1)
cmp #S.FD.T.PIPE
bne .97
ldy #S.PS.hStdIn
lda (pPS),y
sta hFile
inc bPipe
.80 >LDYAI 256
>SYSCALL GetMem
bcs .9
>STYA ZPBufPtr
stx hBuf
* clc
.9 rts
.97 lda #E.SYN
.98 pha
>PUSHW L.MSG.USAGE
>PUSHBI 0
>SYSCALL PrintF
pla
sec
rts
*--------------------------------------
CS.RUN.NextArg inc ArgIndex
lda ArgIndex
>SYSCALL ArgV
bcs .9
>STYA ZPPtr1
.9 rts
*--------------------------------------
CS.RUN.OPEN >PUSHYA
>PUSHBI O.RDONLY+O.TEXT
>PUSHBI S.FI.T.TXT
>PUSHWZ Aux type
>SYSCALL FOpen
bcs .9
sta hFile
.9 rts
*--------------------------------------
CS.RUN.ISATTY ldy #S.PS.hStdOut
lda (pPS),y
tax
lsr
bcc .9
lda Nod.Table.hFD-2,x
>SYSCALL GetMemPtr
>STYA ZPPtr1
lda (ZPPtr1)
beq .9
inc bIsTTY
.9 rts
*--------------------------------------
CS.QUIT lda hFile
beq .1
>SYSCALL FClose
.1 lda hBuf
beq .8
>SYSCALL FreeMem
.8 clc
rts
*--------------------------------------
CS.RUN.PRINTBYTE pha
lda bNewLine
beq .2
stz bNewLine
>PUSHW L.MSG.LINENUM
>PUSHW LineCount
>PUSHBI 2
>SYSCALL PrintF
.2 pla
pha
>SYSCALL PutChar
pla
cmp #C.CR
bne .9
lda bIsTTY
beq .4
lda #C.LF
>SYSCALL PutChar
.4 inc bNewLine
inc LineCount
bne .9
inc LineCount+1
.9 rts
*--------------------------------------
CS.DOEVENT sec
rts
*--------------------------------------
CS.END
*--------------------------------------
OptionList .AS "x"
OptionList.Cnt .EQ *-OptionList
*--------------------------------------
MSG.USAGE .AS "Usage : NL <File> or CMD|NL"
MSG.CRLF .AZ "\r\n"
MSG.LINENUM .AZ "%5D "
*--------------------------------------
.DUMMY
.OR 0
DS.START
DS.END .ED
*--------------------------------------
MAN
SAVE usr/src/bin/nl.s
ASM