mirror of https://github.com/A2osX/A2osX.git
580 lines
8.3 KiB
Plaintext
580 lines
8.3 KiB
Plaintext
NEW
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AUTO 3,1
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*---------------------------------------
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MAC.Init lda #SL..+SL._
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>SYSCALL SListNew
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bcs .9
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>STA.G MAC.hList
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>LDYAI 256
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>SYSCALL GetMem
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bcs .9
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txa
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>STA.G MAC.hBuf
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>LDYAI 256
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>SYSCALL GetMem
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bcs .9
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>STYA ZPMacroArgBuf
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txa
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>STA.G MAC.hArgBuf
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>LDYAI MA.MAXDEPTH*6
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>SYSCALL GetMem
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bcs .9
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>STYA ZPMacroStk
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txa
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>STA.G MAC.hStk
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.9 rts
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*---------------------------------------
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MAC.Quit >LDA.G MAC.StkPtr
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beq .10
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jsr MAC.Pop
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bra MAC.Quit
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.10 >LDA.G MAC.hStk
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beq .1
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>SYSCALL FreeMem
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.1 >LDA.G MAC.hBuf
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beq .2
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>SYSCALL FreeMem
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.2 >LDA.G MAC.hArgBuf
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beq .3
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>SYSCALL FreeMem
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.3 >LDA.G MAC.hList
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beq .8
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>SYSCALL SListFree
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.8 clc
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rts
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*---------------------------------------
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MAC.Learn >LDA.G MAC.hBuf
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>SYSCALL GetMemPtr
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>STYA ZPMacroBuf
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>STZ.G MAC.BufPtr
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sta (ZPMacroBuf)
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lda (ZPLinePtr)
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cmp #C.SPACE No label, scan to DIR/OP if any
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bne .1
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jsr SRC.GetNextCharNB
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bcs .8
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lda #C.SPACE Store ONE blank
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jsr MAC.AddChar
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bcs .90
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lda (ZPLinePtr) get back non blank char
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bra .2
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.1 jsr MAC.AddChar
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bcs .99
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jsr SRC.GetNextChar
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bcs .80
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cmp #C.SPACE
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bne .1
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jsr MAC.AddChar
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.90 bcs .99
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jsr SRC.GetNextCharNB
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bcs .80
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.2 cmp #'.' Directive ?
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bne .4
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ldy #1
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lda (ZPLinePtr),y
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beq .3
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cmp #'E'
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beq .21
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cmp #'e'
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bne .3
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.21 iny
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lda (ZPLinePtr),y
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beq .3
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cmp #'M'
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beq .22
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cmp #'m'
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bne .3
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.22 >STZ.G ASM.MA.ON
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.8 clc
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rts
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.80 lda #C.CR
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jmp MAC.AddChar
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.3 lda (ZPLinePtr)
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.4 jsr MAC.AddChar
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bcs .99
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jsr SRC.GetNextChar
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bcs .80
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cmp #C.SPACE
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bne .4
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jsr SRC.GetNextChar
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bcs .8
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cmp #C.SPACE
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beq .80 Comments...
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pha
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lda #C.SPACE
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jsr MAC.AddChar
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pla
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bcs .99
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.5 jsr MAC.AddChar Store ARG....
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bcs .99
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jsr SRC.GetNextChar
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bcs .80
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cmp #C.SPACE
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bne .5
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bra .80 End of Line
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.99 rts
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*---------------------------------------
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MAC.AddChar tax
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>LDA.G ASM.PASS If Pass#2, ignore
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bne .8
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>LDA.G MAC.BufPtr
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tay
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txa
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sta (ZPMacroBuf),y
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>INC.G MAC.BufPtr
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txa
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beq .1
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cmp #C.CR
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bne .8
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.1 >PUSHB.G MAC.hList
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>PUSHW.G MAC.ID
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>PUSHW ZPMacroBuf
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>LDA.G MAC.BufPtr
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tay
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lda #0
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>PUSHYA
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>SYSCALL SListAddData
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rts
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.8 clc
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rts
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*---------------------------------------
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MAC.Exec jsr SRC.GetNextChar skip '>'
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bcs .90
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>PUSHB.G MAC.hList
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>PUSHW ZPLinePtr
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>SYSCALL SListLookup
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bcs .90
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>STYA ZPPtr1 MAC.ID
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jsr SRC.SkipX
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.1 jsr SRC.GetChar
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bcs .8
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cmp #C.SPACE
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bne .92
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jsr SRC.GetNextChar
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beq .8 eol..
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cmp #C.SPACE some arg...
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bne .8
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.2 jsr SRC.GetNextChar comment....skip
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bcc .2
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.8 jmp MAC.Push
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.90 lda #E.MACRO.INV
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* sec
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rts
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.92 lda #E.SYNTAX.ERROR
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sec
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MAC.Exec.RTS rts
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*---------------------------------------
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MAC.ReadLine >LDA.G MAC.hBuf
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>SYSCALL GetMemPtr
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>STYA ZPMacroBuf
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jsr MAC.Get ZPMacroArgBuf = args
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>PUSHB.G MAC.hList
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>PUSHW ZPPtr1 Mac ID
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>PUSHW ZPMacroBuf
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>PUSHWZ len = 0 (string mode)
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>PUSHW ZPPtr2 offset
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>SYSCALL SListGetData
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bcs MAC.Exec.RTS
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pha
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tya
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sec +1 for CR
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adc ZPPtr2
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sta ZPPtr2
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pla
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adc ZPPtr2+1
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sta ZPPtr2+1
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ldy #0
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stz DIR.Byte
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.1 lda (ZPMacroBuf)
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beq .8
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cmp #C.CR
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beq .8
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inc ZPMacroBuf
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bne .2
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inc ZPMacroBuf+1
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.2 cmp #']'
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bne .7
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bit DIR.Byte
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bmi .7
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lda (ZPMacroBuf)
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beq .9
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inc ZPMacroBuf
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bne .21
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inc ZPMacroBuf+1
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.21 cmp #'#'
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bne .22
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lda ZPMacroArgCnt
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ora #$30
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bra .7
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.22 cmp #'1'
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bcc .6
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cmp #'9'+1
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bcs .6
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and #$0f
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tax
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dec
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cmp ZPMacroArgCnt
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bcs .1
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jsr MAC.GetArgX
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bcs .1 no arg ]n, append nothing
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.3 lda (ZPPtr1)
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sta (ZPLineBuf),y
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iny
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inc ZPPtr1
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bne .4
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inc ZPPtr1+1
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.4 dex
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bne .3
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bra .1
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.6 pha
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lda #']'
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sta (ZPLineBuf),y
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iny
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pla
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.7 sta (ZPLineBuf),y
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iny
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bra .1
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.8 lda #0
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sta (ZPLineBuf),y
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jmp MAC.Put
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.9 lda #E.SYNTAX.ERROR
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sec
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MAC.ReadLine.RTS
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rts
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*---------------------------------------
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MAC.Push >LDA.G MAC.StkPtr
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cmp #MA.MAXDEPTH*6
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beq MAC.ReadLine.RTS
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>LDA.G MAC.CtxID
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pha
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>INC.G MAC.CtxStackPtr
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clc
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adc #MAC.CtxStack-1
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tay
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pla
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sta (pData),y
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>INC.G MAC.CtxNextID
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>STA.G MAC.CtxID
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ldy #$ff
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.10 iny
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lda (ZPLinePtr),y
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bne .10
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iny
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iny
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lda #0
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>SYSCALL GetMem
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bcs MAC.ReadLine.RTS
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>STYA ZPPtr2
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phx hArgs
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ldx #0 arg cnt
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.1 ldy #$ff
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stz DIR.Byte between " flag
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.2 iny
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lda (ZPLinePtr),y
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beq .3
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cmp #C.SPACE end of args ?
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bne .21
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bit DIR.Byte
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beq .3
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.20 sta (ZPPtr2)
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inc ZPPtr2
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bne .2
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inc ZPPtr2+1
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bra .2
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.21 cmp #'"'
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bne .22
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lda DIR.Byte
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eor #$ff
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sta DIR.Byte
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bra .2
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.22 cmp #','
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bne .20
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bit DIR.Byte
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bmi .20
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lda #0
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sta (ZPPtr2)
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inc ZPPtr2
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bne .23
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inc ZPPtr2+1
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.23 tya
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beq .4
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inx
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sec
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adc ZPLinePtr
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sta ZPLinePtr
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bcc .1
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inc ZPLinePtr+1
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bra .1
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.3 lda #0
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sta (ZPPtr2)
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tya
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beq .4
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inx
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.4 >LDA.G MAC.StkPtr
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tay
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pla push hArgs
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sta (ZPMacroStk),y
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iny
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txa push arg count
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sta (ZPMacroStk),y
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iny
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lda #0 push offset
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sta (ZPMacroStk),y
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iny
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sta (ZPMacroStk),y
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iny
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lda ZPPtr1+1 push MAC.ID
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sta (ZPMacroStk),y
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iny
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lda ZPPtr1
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sta (ZPMacroStk),y
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iny
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tya
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>STA.G MAC.StkPtr
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clc
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rts
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.9 lda #E.MACRO.TOO.MANY
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sec
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rts
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*---------------------------------------
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MAC.Pop >LDA.G MAC.StkPtr
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dec
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dec mac id
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dec
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dec offset
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dec arg cnt
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dec hArgs
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sta (pData),y 6 bytes off stack
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tay
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lda (ZPMacroStk),y
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>SYSCALL FreeMem
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>LDA.G MAC.CtxStackPtr
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clc
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adc #MAC.CtxStack-1
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tay
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lda (pData),y
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>STA.G MAC.CtxID
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>DEC.G MAC.CtxStackPtr
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clc
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rts
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*---------------------------------------
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MAC.Get >LDA.G MAC.StkPtr
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tay
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dey
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lda (ZPMacroStk),y
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sta ZPPtr1
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dey
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lda (ZPMacroStk),y
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sta ZPPtr1+1 get mac ID
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dey
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lda (ZPMacroStk),y
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sta ZPPtr2
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dey
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lda (ZPMacroStk),y
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sta ZPPtr2+1 get offset
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dey
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lda (ZPMacroStk),y get arg count
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sta ZPMacroArgCnt
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dey
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lda (ZPMacroStk),y
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>SYSCALL GetMemPtr
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>STYA ZPMacroArgBuf get args
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rts
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*---------------------------------------
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MAC.Put >LDA.G MAC.StkPtr
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tay
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dey to arg cnt
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dey
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dey skip mac ID
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lda ZPPtr2
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sta (ZPMacroStk),y
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dey
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lda ZPPtr2+1
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sta (ZPMacroStk),y save offset
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clc
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rts
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*---------------------------------------
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MAC.GetArgX phy
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>LDYA ZPMacroArgBuf
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>STYA ZPPtr1
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.1 ldy #$ff
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.2 iny
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lda (ZPPtr1),y
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bne .2
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.3 dex
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beq .4
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tya
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beq .9
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sec
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adc ZPPtr1
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sta ZPPtr1
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bcc .1
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inc ZPPtr1+1
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bra .1
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.4 tya
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tax
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beq .9
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ply
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clc
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rts
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.9 ply
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sec
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rts
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*---------------------------------------
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MAN
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SAVE usr/src/bin/asm.s.mac
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LOAD usr/src/bin/asm.s
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ASM
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