mirror of
https://github.com/A2osX/A2osX.git
synced 2024-11-24 14:31:05 +00:00
467 lines
7.8 KiB
Plaintext
467 lines
7.8 KiB
Plaintext
NEW
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AUTO 3,1
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*--------------------------------------
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CP.JSRX lda #$20 JSR
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jsr CP.Emit.Byte
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lda I.KEYWORDS,x
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jsr CP.Emit.Byte
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lda I.KEYWORDS+1,x
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jmp CP.Emit.Byte
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*--------------------------------------
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CP.ECOLON lda #$60 RTS
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jsr CP.Emit.Byte
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stz bCompile
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clc
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rts
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*--------------------------------------
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CP.INVALID lda #E.CSYN
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sec
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rts
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*--------------------------------------
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* : TEST ." hello" CR ;
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*--------------------------------------
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CP.PRINT ldy #$ff
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.1 iny
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lda (ZPCLBufPtr),y
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beq CP.INVALID
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cmp #'"'
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beq .2
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sta (ZPDataPtr),y
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bra .1
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.2 lda #0
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sta (ZPDataPtr),y
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phy
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>LDYA ZPDataPtr
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jsr CP.Emit.LDYAI
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ldx #_PutS
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jsr CP.Emit.SYSCALL
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pla
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pha
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sec skip "
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adc ZPCLBufPtr
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sta ZPCLBufPtr
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bcc .3
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inc ZPCLBufPtr+1
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.3 pla
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sec include \0
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adc ZPDataPtr
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sta ZPDataPtr
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bcc .4
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inc ZPDataPtr+1
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.4
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clc
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rts
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*--------------------------------------
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CP.DO jsr CP.Emit.DO I,n -> RP
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ldy RP
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lda ZPCodePtr+1
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sta (pData),y
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dey
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lda ZPCodePtr
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sta (pData),y
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dey push CodePtr=DOTEST on RP for LOOP/LEAVE
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sty RP
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jsr CP.Emit.DOTEST CODE: I < n ?
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ldx #KW.DO.ID
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jsr CP.Emit.JMP0000 to put jmp LOOPEND
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clc
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rts
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*--------------------------------------
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CP.LOOP lda #$00
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jsr CP.Emit.PUSHBI >PUSHBI 0
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lda #$01 >PUSHBI 1
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jsr CP.Emit.PUSHBI
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*--------------------------------------
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CP.pLOOP ldy RP
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iny
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bmi .9
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lda (pData),y
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cmp #KW.DO.ID
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bne .9
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phy
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jsr CP.Emit.LOOP CODE: I=I+n
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ply
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iny POP LOOPEND@ -> Ptr1
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lda (pData),y
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sta ZPPtr1
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iny
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lda (pData),y
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sta ZPPtr1+1
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jsr CP.Emit.JMPBack CODE: JMP to DOTEST
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sty RP discard ID DOTEST@ LOOPEND@
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jsr CP.UpdatePtr1 update JMP LOOPEND@ with CodePtr
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jsr CP.Emit.LOOPEND
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clc
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rts
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.9 lda #E.NODO
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sec
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rts
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*--------------------------------------
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CP.I jsr CP.Emit.I
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clc
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rts
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*--------------------------------------
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CP.LEAVE ldy RP
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.1 iny
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bmi .9
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lda (pData),y
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cmp #KW.DO.ID
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beq .2
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iny
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iny
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bpl .1 skip 3 bytes on RP
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.9 lda #E.NODO
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sec
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rts
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.2 phy
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jsr CP.Emit.LEAVE set I = END on RP
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ply
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iny skip LOOPEND ptr
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iny
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jsr CP.Emit.JMPBack jmp DOTEST
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clc
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rts
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*--------------------------------------
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CP.IF jsr CP.Emit.TESTTRUE
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ldx #KW.IF.ID
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jsr CP.Emit.JMP0000 to put jmp -> ELSE/THEN later
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clc
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rts
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*--------------------------------------
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CP.ELSE jsr CP.PopCodePtr get previous JMP -> ptr1
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ldx #KW.IF.ID
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jsr CP.Emit.JMP0000 to put jmp -> THEN later
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jsr CP.UpdatePtr1
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clc
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rts
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*--------------------------------------
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CP.THEN jsr CP.PopCodePtr
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jsr CP.UpdatePtr1
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clc
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rts
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*--------------------------------------
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CP.BEGIN jsr CP.PushCodePtr X = BEGIN ID
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clc
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rts
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*--------------------------------------
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CP.UNTIL jsr CP.Emit.TESTFALSE
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bra CP.WHILE.1
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*--------------------------------------
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CP.REPEAT ldy RP
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iny
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bmi CP.E.NOBEGIN
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jsr CP.Emit.JMPBack
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clc
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rts
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*--------------------------------------
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CP.WHILE jsr CP.Emit.TESTTRUE
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CP.WHILE.1 ldy RP
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iny
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bmi CP.E.NOBEGIN
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jsr CP.Emit.JMPBack
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jsr CP.Emit.RPDROP2
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clc
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rts
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*--------------------------------------
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CP.E.NOBEGIN lda #E.NOFOR
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sec
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rts
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*--------------------------------------
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KW.gR
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*--------------------------------------
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KW.Rg
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*--------------------------------------
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KW.R
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lda #E.SYN
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sec
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rts
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*--------------------------------------
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CP.Emit.JMP0000 lda #$4C JMP
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jsr CP.Emit.Byte
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jsr CP.PushCodePtr
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lda #0
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jsr CP.Emit.Byte
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jsr CP.Emit.Byte
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rts
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*--------------------------------------
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CP.Emit.JMPBack lda #$4C JMP
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jsr CP.Emit.Byte
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iny
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lda (pData),y
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jsr CP.Emit.Byte
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iny
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lda (pData),y
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jmp CP.Emit.Byte
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*--------------------------------------
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CP.Emit.RPDROP2 ldx #CODE.RPDROP2.L
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ldy #0
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.1 lda CODE.RPDROP2,y
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jsr CP.Emit.Byte
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iny
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dex
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bne .1
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rts
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*--------------------------------------
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CP.Emit.TESTTRUE
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ldx #CODE.TESTTRUE.L
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ldy #0
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.1 lda CODE.TESTTRUE,y
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jsr CP.Emit.Byte
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iny
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dex
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bne .1
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rts
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*--------------------------------------
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CP.Emit.TESTFALSE
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ldx #CODE.TESTFALSE.L
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ldy #0
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.1 lda CODE.TESTFALSE,y
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jsr CP.Emit.Byte
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iny
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dex
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bne .1
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rts
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*--------------------------------------
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CP.Emit.PULLA ldx #CODE.PULLA.L
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ldy #0
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.1 lda CODE.PULLA,y
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jsr CP.Emit.Byte
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iny
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dex
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bne .1
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rts
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*--------------------------------------
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CP.Emit.PUSHBI pha
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lda #$A9 lda #imm
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jsr CP.Emit.Byte
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pla
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jsr CP.Emit.Byte
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*--------------------------------------
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CP.Emit.PUSHA ldx #CODE.PUSHA.L
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ldy #0
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.1 lda CODE.PUSHA,y
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jsr CP.Emit.Byte
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iny
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dex
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bne .1
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rts
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*--------------------------------------
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CP.Emit.DO ldx #CODE.DO.L
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ldy #0
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.1 lda CODE.DO,y
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jsr CP.Emit.Byte
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iny
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dex
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bne .1
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rts
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*--------------------------------------
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CP.Emit.DOTEST ldx #CODE.DOTEST.L
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ldy #0
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.1 lda CODE.DOTEST,y
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jsr CP.Emit.Byte
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iny
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dex
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bne .1
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rts
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*--------------------------------------
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CP.Emit.LOOP ldx #CODE.LOOP.L
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ldy #0
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.1 lda CODE.LOOP,y
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jsr CP.Emit.Byte
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iny
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dex
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bne .1
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rts
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*--------------------------------------
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CP.Emit.LOOPEND ldx #CODE.LOOPEND.L
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ldy #0
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.1 lda CODE.LOOPEND,y
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jsr CP.Emit.Byte
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iny
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dex
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bne .1
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rts
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*--------------------------------------
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CP.Emit.I ldx #CODE.I.L
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ldy #0
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.1 lda CODE.I,y
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jsr CP.Emit.Byte
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iny
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dex
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bne .1
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rts
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*--------------------------------------
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CP.Emit.LEAVE ldx #CODE.LEAVE.L
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ldy #0
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.1 lda CODE.LEAVE,y
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jsr CP.Emit.Byte
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iny
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dex
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bne .1
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rts
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*--------------------------------------
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CP.Emit.LDYAI pha
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lda #$A0 LDY #imm
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jsr CP.Emit.Byte
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tya
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jsr CP.Emit.Byte
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lda #$A9 LDA #imm
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jsr CP.Emit.Byte
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pla
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jmp CP.Emit.Byte
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*--------------------------------------
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CP.Emit.SYSCALL lda #$A2 LDX #imm
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jsr CP.Emit.Byte
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txa
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jsr CP.Emit.Byte
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lda #$20 JSR
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jsr CP.Emit.Byte
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lda #A2osX.SYSCALL
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jsr CP.Emit.Byte
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lda /A2osX.SYSCALL
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jmp CP.Emit.Byte
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*--------------------------------------
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CP.Emit.JsrYA pha
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lda #$20
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jsr CP.Emit.Byte
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tya
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jsr CP.Emit.Byte
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pla
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*--------------------------------------
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CP.Emit.Byte sta (ZPCodePtr)
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inc ZPCodePtr
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bne .8
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inc ZPCodePtr+1
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.8 rts
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*--------------------------------------
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CP.PushCodePtr ldy RP
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lda ZPCodePtr+1
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sta (pData),y
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dey
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lda ZPCodePtr
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sta (pData),y
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dey
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txa
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sta (pData),y
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dey
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sty RP
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rts
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*--------------------------------------
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CP.PopCodePtr ldy RP
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iny
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lda (pData),y
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cmp #KW.IF.ID
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bne .9
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iny
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lda (pData),y
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sta ZPPtr1
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iny
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lda (pData),y
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sta ZPPtr1+1
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sty RP
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clc
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rts
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.9 lda #E.NOIF
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sec
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rts
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*--------------------------------------
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CP.UpdatePtr1 lda ZPCodePtr
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sta (ZPPtr1)
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ldy #1
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lda ZPCodePtr+1
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sta (ZPPtr1),y
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rts
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*--------------------------------------
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MAN
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SAVE usr/src/bin/forth.s.cp
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LOAD usr/src/bin/forth.s
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ASM
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