A2osX/BIN/CAT.S.txt
2021-07-04 15:59:31 -04:00

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NEW
AUTO 3,1
.LIST OFF
.OP 65C02
.OR $2000
.TF bin/cat
*--------------------------------------
.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
ZPPtr1 .BS 2
ZPBufPtr .BS 2
ByteIndex .BS 1
ArgCount .BS 1
FileCount .BS 1
bPause .BS 1
bDummy .BS 1
bIsTTY .BS 1
ArgIndex .BS 1
hBuf .BS 1
hFile .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 #S.PS.F.EVENT S.PS.F
.DA #0
.DA CS.END-CS.START CS
.DA DS.END-DS.START DS
.DA #64 SS
.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.INIT .DA MSG.INIT
.DA 0
*--------------------------------------
CS.INIT clc
rts
*--------------------------------------
CS.RUN
.1 stz bIsTTY
inc ArgCount
lda ArgCount
>SYSCALL ArgV
bcs .7
>STYA ZPPtr1
lda (ZPPtr1)
cmp #'-'
bne .4
ldy #1
lda (ZPPtr1),y
ldx #OptionList.Cnt-1
.2 cmp OptionList,x
beq .3
dex
bpl .2
.99 >PUSHW L.MSG.USAGE
>PUSHBI 0
>SYSCALL PrintF
lda #E.SYN
sec
.9 rts
.3 ldy OptionVars,x
lda #$80
sta 0,y
bra .1
.4 inc FileCount
bra .1 scan for any other args
.7 lda FileCount
beq .99
>LDYAI 256
>SYSCALL GetMem
bcs .9
>STYA ZPBufPtr
stx hBuf
ldy #S.PS.hStdOut
lda (pPS),y
tax
lsr
bcc CS.RUN.LOOP
lda Nod.Table.hFD-2,x
>SYSCALL GetMemPtr
>STYA ZPPtr1
lda (ZPPtr1)
beq CS.RUN.LOOP
inc bIsTTY
>PUSHW L.MSG.INIT
>PUSHBI 0
>SYSCALL PrintF
*--------------------------------------
CS.RUN.LOOP ldy #S.PS.hStdIn
lda (pPS),y
>SYSCALL FEOF
bcs .90 IO error
tay
bne .10 no char
>SYSCALL GetChar
bcs .9 IO error
cmp #$03 Ctrl-C
beq .9 Abort....
cmp #$13 Ctrl-S
bne .10
lda bPause
eor #$ff
sta bPause
bne CS.RUN.LOOP
.10 lda bPause
bne CS.RUN.LOOP Pause...
.11 lda hFile
bne .2
.1 inc ArgIndex
lda ArgIndex
>SYSCALL ArgV
bcs .99 No more arg...the end!
>STYA ZPPtr1
lda (ZPPtr1)
cmp #'-'
beq .1 An option, skip...
>LDYA ZPPtr1
jsr CS.RUN.OPEN
.90 bcs .9
sta hFile
.2 lda hFile
>SYSCALL GetC
bcs .7
pha
>SYSCALL PutChar
pla
cmp #C.CR
bne CS.RUN.LOOP
lda bIsTTY
beq CS.RUN.LOOP
lda #C.LF
>SYSCALL PutChar
bra CS.RUN.LOOP
.7 cmp #MLI.E.EOF
bne .9
jsr CS.RUN.CLOSE
jmp CS.RUN.LOOP
.99 lda #0 Exit with no Error
.9 sec
rts
*--------------------------------------
CS.RUN.OPEN >PUSHYA
>PUSHBI O.RDONLY+O.TEXT
>PUSHBI S.FI.T.TXT
>PUSHWZ Aux type
>SYSCALL FOpen
rts
*--------------------------------------
CS.QUIT lda hBuf
beq CS.RUN.CLOSE
>SYSCALL FreeMem
CS.RUN.CLOSE lda hFile
beq .8
stz hFile
>SYSCALL FClose
.8 clc
rts
*--------------------------------------
CS.DOEVENT sec
rts
*--------------------------------------
CS.END
*--------------------------------------
OptionList .AS "x"
OptionList.Cnt .EQ *-OptionList
OptionVars .DA #bDummy
*--------------------------------------
MSG.USAGE .AS "Usage : CAT File1 [File2...]"
MSG.CRLF .AZ "\r\n"
MSG.INIT .AZ "\e[?7h" Enable Line Wrap
*--------------------------------------
.DUMMY
.OR 0
DS.START
DS.END .ED
*--------------------------------------
MAN
SAVE usr/src/bin/cat.s
ASM