A2osX/BIN/CMP.S.txt

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NEW
AUTO 3,1
.LIST OFF
.OP 65C02
.OR $2000
.TF BIN/CMP
*--------------------------------------
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.INB inc/macros.i
.INB inc/a2osx.i
.INB inc/mli.i
.INB inc/mli.e.i
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*--------------------------------------
.DUMMY
.OR ZPBIN
ZS.START
ArgIndex .BS 1
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ZPPtr1 .BS 2
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bPause .BS 1
bAll .BS 1
bVerbose .BS 1
bDiff .BS 1
hFile1 .BS 1
hBuf1 .BS 1
ZPBufPtr1 .BS 2
bSkip1 .BS 1
hFile2 .BS 1
hBuf2 .BS 1
ZPBufPtr2 .BS 2
bSkip2 .BS 1
Offset .BS 2
BufCnt .BS 2
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SeekOfs .BS 4
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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
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*--------------------------------------
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.1 .DA CS.INIT
.DA CS.RUN
.DA CS.DOEVENT
.DA CS.QUIT
L.MSG.USAGE .DA MSG.USAGE
L.MSG.DIFF .DA MSG.DIFF
.DA 0
*--------------------------------------
CS.INIT clc
rts
*--------------------------------------
CS.RUN
.1 inc ArgIndex
lda ArgIndex
>SYSCALL ArgV
bcs .7
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>STYA ZPPtr1
lda (ZPPtr1)
cmp #'-'
bne .2
jsr CS.RUN.CheckOpt
bcc .1
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.99 >PUSHW L.MSG.USAGE
>PUSHBI 0
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>SYSCALL PrintF
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lda #E.SYN
sec
.9 rts
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.2 lda hFile1
bne .3
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jsr CS.RUN.OPEN
bcs .9
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sta hFile1
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bra .1
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.3 lda hFile2
bne .4
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jsr CS.RUN.OPEN
bcs .9
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sta hFile2
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bra .1
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.4 bit bSkip1
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bmi .5
jsr CS.RUN.SEEK
bcs .9
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sec
ror bSkip1
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bra .1
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.5 bit bSkip2
bmi .99
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sta bSkip2
jsr CS.RUN.SEEK
bcs .9
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sec
ror bSkip2
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jmp .1
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.7 lda hFile2
beq .99
lda hFile1
beq .99
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.8 >LDYAI 256
>SYSCALL GetMem
bcs .9
>STYA ZPBufPtr1
stx hBuf1
>LDYAI 256
>SYSCALL GetMem
bcs .9
>STYA ZPBufPtr2
stx hBuf2
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*--------------------------------------
CS.RUN.LOOP ldy #S.PS.hStdIn
lda (pPS),y
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>SYSCALL FEOF
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bcs .9 IO error
tay
bne .1 no char
>SYSCALL GetChar
bcs .9 IO error
cmp #$03 Ctrl-C
beq .9 Abort....
cmp #$13 Ctrl-S
bne .1
lda bPause
eor #$ff
sta bPause
bne CS.RUN.LOOP
.1 lda bPause
bne CS.RUN.LOOP Pause...
jsr CS.RUN.READ1
bcc .2
cmp #MLI.E.EOF
bne .9
bra .99
.2 >STYA BufCnt
jsr CS.RUN.READ2
bcc .20
cmp #MLI.E.EOF
bne .9
bra .99
.20 cpy BufCnt
pha
sbc BufCnt+1
pla
bcc .3
>STYA BufCnt
.3 ldy #0
.4 lda (ZPBufPtr1),y
cmp (ZPBufPtr2),y
beq .8
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lda #$E0
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sta bDiff
bit bVerbose
bpl .5
jsr CS.RUN.Print
bcs .9
.5 bit bAll
bpl .99
.8 iny
cpy BufCnt
bne .4
inc Offset
bne CS.RUN.LOOP
inc Offset+1
bra CS.RUN.LOOP
.99 lda bDiff
.9 sec
rts
*--------------------------------------
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CS.RUN.OPEN >PUSHW ZPPtr1
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>PUSHBI O.RDONLY
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>PUSHBI 0 Type
>PUSHWZ Aux type
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>SYSCALL FOpen
rts
*--------------------------------------
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CS.RUN.SEEK >LDYA ZPPtr1
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>SYSCALL AToL
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bcs .9
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>PULLL SeekOfs
lda bSkip1
bmi .1
>PUSHBI SEEK.SET
>PUSHL SeekOfs
lda hFile1
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>SYSCALL FSeek
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bcs .9
.1 >PUSHBI SEEK.SET
>PUSHL SeekOfs
lda hFile2
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>SYSCALL FSeek
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.9 rts
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*--------------------------------------
CS.RUN.READ1 >PUSHWI 256
>PUSHW ZPBufPtr1
lda hFile1
>SYSCALL FRead
rts
*--------------------------------------
CS.RUN.READ2 >PUSHWI 256
>PUSHW ZPBufPtr2
lda hFile2
>SYSCALL FRead
rts
*--------------------------------------
CS.RUN.Print phy
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>PUSHW L.MSG.DIFF
>PUSHW Offset
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tya
>PUSHA
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>PUSHB (ZPBufPtr1),y
>PUSHB (ZPBufPtr2),y
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>PUSHBI 5
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>SYSCALL PrintF
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ply
rts
*--------------------------------------
CS.QUIT lda hFile2
beq .1
>SYSCALL FClose
.1 lda hFile1
beq .2
>SYSCALL FClose
.2 lda hBuf2
beq .3
>SYSCALL FreeMem
.3 lda hBuf1
beq .8
>SYSCALL FreeMem
.8 clc
rts
*--------------------------------------
CS.DOEVENT sec
rts
*--------------------------------------
CS.RUN.CheckOpt ldy #1
lda (ZPPtr1),y
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ldy #OptionVars-OptionList-1
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.2 cmp OptionList,y
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beq .3
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dey
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bpl .2
sec
rts
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.3 ldx OptionVars,y
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lda #$ff
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sta 0,x
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clc
rts
*--------------------------------------
CS.END
*--------------------------------------
OptionList .AS "AaVv"
OptionVars .DA #bAll,#bAll,#bVerbose,#bVerbose
*--------------------------------------
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MSG.USAGE .AS "Usage : CMP File1 File2 [SKIP1 [SKIP2]]\r\n"
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.AS " -A : Shows All differences\r\n"
.AZ " -V : Verbose Mode\r\n"
MSG.DIFF .AZ "%H%h:%h %h\r\n"
*--------------------------------------
.DUMMY
.OR 0
DS.START
DS.END
.ED
*--------------------------------------
MAN
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SAVE usr/src/bin/cmp.s
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ASM