A2osX/BIN/OD.S.txt

NEW
  AUTO 3,1
				.LIST OFF
				.OP 65C02
				.OR $2000
				.TF bin/od
*--------------------------------------
				.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
ByteCount    	.BS 3
bPause       	.BS 1
bPipe        	.BS 1
bIsTTY       	.BS 1
bTemp        	.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.OFFSET    .DA MSG.OFFSET
L.MSG.HEXBYTE   .DA MSG.HEXBYTE
                .DA 0
*--------------------------------------
CS.INIT         clc
                rts
*--------------------------------------
CS.RUN          stz bPipe
                stz bIsTTY
                jsr CS.RUN.ISATTY
                jsr CS.RUN.CheckArgs
                bcs CS.RUN.LOOP.RTS

                stz ByteCount
                stz ByteCount+1
                stz ByteCount+2

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

                jsr CS.RUN.FINISHUP

.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
                tay
				ldx FILEs.hFD-1,y
				lda FDs.pLO-1,x
				sta ZPPtr1
				lda FDs.pHI-1,x
                sta ZPPtr1+1

                lda (ZPPtr1)
                cmp #S.FD.T.PIPE
                bne .97

                sty 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
                lda FILEs.hFD-1,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                           Char is in A

                lda ByteCount                 Divisible by 16
                and #$0f
                sta bTemp
                bne .2

                >PUSHW L.MSG.OFFSET           Print offset
                lda ByteCount+2
                >PUSHA
                lda ByteCount+1
                >PUSHA
                lda ByteCount
                >PUSHA
                >PUSHBI 3
                >SYSCALL PrintF

.2              ldy bTemp                     Offset mod 16
                pla                           Character
                pha
                sta (ZPBufPtr),y

                >PUSHW L.MSG.HEXBYTE
                pla
                >PUSHA
                >PUSHBI 1
                >SYSCALL PrintF

.6              inc ByteCount
                bne .7
                inc ByteCount+1
                bne .7
                inc ByteCount+2

.7              lda bTemp
                cmp #$0f
                bne .9

                jsr CS.RUN.PRINTASCII

.9              rts
*--------------------------------------
CS.RUN.PRINTASCII
                lda #'>'
                >SYSCALL PutChar

                ldy #$00
.7              lda (ZPBufPtr),y
                phy
                cmp #$7f
                bcs .75                  Character >= $7f
                cmp #C.SPACE
                bcc .75                  Character < Space
                bra .8
.75             lda #'.'

.8              >SYSCALL PutChar
                ply
                cpy bTemp
                beq .85
                iny
                bra .7

.85             lda #'<'
                >SYSCALL PutChar

                lda #C.CR
                >SYSCALL PutChar
                lda bIsTTY
                beq .9
                lda #C.LF
                >SYSCALL PutChar
.9              rts
*--------------------------------------
CS.RUN.FINISHUP
                lda ByteCount
                and #$0f
                bne .1
                rts
.1              pha
                lda #' '
                >SYSCALL PutChar
                lda #' '
                >SYSCALL PutChar
                lda #' '
                >SYSCALL PutChar
                pla
                inc
                cmp #$10
                bne .1
.2              jsr CS.RUN.PRINTASCII
                rts
*--------------------------------------
CS.DOEVENT      sec
                rts
*--------------------------------------
CS.END
*--------------------------------------
OptionList      .AS "x"
OptionList.Cnt  .EQ *-OptionList
*--------------------------------------
MSG.USAGE       .CS "Usage : OD <File> or CMD|OD"
MSG.CRLF        .CZ "\r\n"
MSG.OFFSET      .CZ "%h%h%h "
MSG.HEXBYTE     .CZ "%h "
*--------------------------------------
                .DUMMY
                .OR 0
DS.START
DS.END          .ED
*--------------------------------------
MAN
SAVE usr/src/bin/od.s
ASM