A2osX/BIN/ACOS.S.CORE.txt

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NEW
AUTO 3,1
.LIST OFF
*--------------------------------------
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CORE.Init ldy #CCS.MAX
sty pCCS
>LDYAI CODESEG
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>SYSCALL GetMem
bcs .9
>STYA ZPCodeBufPtr
txa
>STA.G hCodeBuf
>LDYAI CONSTSEG
>SYSCALL GetMem
bcs .9
>STYA ZPConstBufPtr
txa
>STA.G hConstBuf
>LDYAI DATASEG
>SYSCALL GetMem
bcs .9
>STYA ZPDataBufPtr
txa
>STA.G hDataBuf
>SYSCALL SListNew
bcs .9
>STA.G hLabels
>SYSCALL SListNew
bcs .9
>STA.G hVars
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>LDYAI STRVSEG
>SYSCALL StrVNew
bcs .9
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sta hStrings
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>LDYAI 256
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>SYSCALL GetMem
bcs .9
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>STYA ZPStrBuf
txa
>STA.G hStrBuf
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>LDYAI FWREF
>SYSCALL GetMem
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>STYA ZPFWRefBufPtr
txa
>STA.G hFWRefBuf
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lda #0
sta (ZPFWRefBufPtr)
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clc
.9 rts
*--------------------------------------
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CORE.Quit lda hStrings
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beq .1
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>SYSCALL StrVFree
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.1 ldy #hStrBuf
jsr CORE.Quit.Freemem
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ldy #hDataBuf
jsr CORE.Quit.Freemem
ldy #hConstBuf
jsr CORE.Quit.Freemem
ldy #hCodeBuf
jsr CORE.Quit.Freemem
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*--------------------------------------
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CORE.Cleanup ldy #hFWRefBuf
jsr CORE.Quit.Freemem
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>LDA.G hVars
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beq .1
>SYSCALL SListFree
>STZ.G hVars
.1 >LDA.G hLabels
beq .8
>SYSCALL SListFree
>STZ.G hLabels
.8 clc
CORE.Quit.RTS rts
*--------------------------------------
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CORE.Quit.Freemem
lda (pData),y
beq .8
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pha
lda #0
sta (pData),y
pla
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>SYSCALL FreeMem
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.8 rts
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*--------------------------------------
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CORE.Compile jsr CORE.GetChar
bcs CORE.Quit.RTS
cmp #'#'
beq .80 #/bin/acos....
cmp #';'
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bne .1
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.80 jmp CORE.SkipLine Comment: skip line...
.1 cmp #C.CR
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beq .88 EOL
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jsr CORE.CheckCharNB
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bcs .2 CS=SPACE -> go check VAR or KW
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jsr CORE.IsLetter LABEL must start with a letter
bcs .99
jsr CORE.CreateLabel
bcs .99
bra .8
*--------------------------------------
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.2 jsr CORE.GetNextCharNB skip SPACE(s) or ":"
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bcs .99
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.21 cmp #C.CR
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beq .88 EOL
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jsr CORE.IsLetter
bcs .90
>LDYA L.ACOS.KW
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jsr CORE.LookupSkip
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bcs .3
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jsr CORE.KW.JMP
bcs .99
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bra .8
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*--------------------------------------
.3 jsr CORE.CreateOrGetVar
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bcs .99
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jsr CORE.GetCharNB
bcs .90
cmp #'='
bne .90
jsr CORE.GetNextCharNB skip '='
bcs .90
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jsr EXP.Eval ZPTYPE set by CreateOrGetVar
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bcs .99
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lda ZPTYPE
cmp EXP.TYPE
bne .91
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tax
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beq .4
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jsr CODE.STRSET Store String in hSTRV
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bra .8
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.4 jsr CODE.INTSET Store Int16 result in DATASEG
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*--------------------------------------
.8 jsr CORE.GetCharNB
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bcs .88
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cmp #':'
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beq .2 go skip : and continue
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bra .21
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.88 ldy pCCS
bmi .89
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jsr KW.ENDIF
bcs .99
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.89 clc
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jmp CORE.GetNextChar skip char
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.90 lda #E.CSYN
sec
.99 rts
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.91 lda #E.TMISMATCH
sec
rts
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*--------------------------------------
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CORE.KW.JMP jmp (J.ACOS.KW,x)
*--------------------------------------
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CORE.FWREF >LDA.G hFWRefBuf
>SYSCALL GetMemPtr
>STYA ZPInputBufPtr
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.1 lda (ZPInputBufPtr)
beq .8
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sta ZPPtr1+1
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jsr CORE.GetNextChar
sta ZPPtr1
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jsr CORE.GetNextChar
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jsr CORE.GetLabel
bcs .9
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lda ZPADDR
sta (ZPPtr1)
ldy #1
lda ZPADDR+1
sta (ZPPtr1),y
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bra .1
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.8 clc
rts
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.9 >PUSHW L.MSG.FWREFERR
>PUSHW ZPInputBufPtr
>PUSHBI 2
>SYSCALL PrintF
sec
rts
*--------------------------------------
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CORE.Run lda #$60 RTS
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sta (ZPCodeBufPtr)
jsr CORE.Cleanup
lda ZPCodeBufPtr
sta ZPPtr1
lda ZPCodeBufPtr+1
sta ZPPtr1+1
>LDA.G hCodeBuf
>SYSCALL GetMemPtr
>STYA ZPCodeBufPtr
lda ZPPtr1
sec
sbc ZPCodeBufPtr
sta ZPPtr2
lda ZPPtr1+1
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sbc ZPCodeBufPtr+1
sta ZPPtr2+1
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>PUSHW L.MSG.RUN
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>PUSHW ZPPtr2
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>PUSHBI 2
>SYSCALL PrintF
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jmp (ZPCodeBufPtr)
*--------------------------------------
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CORE.LookupOPS lda (ZPInputBufPtr)
jsr CORE.IsOPSChar
bcc .55
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jsr CORE.IsLetter
bcs .99
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sec
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.55 ror bFlag
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>LDYA L.ACOS.OPS
>STYA ZPPtr1
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ldx #0
.1 ldy #$ff
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.2 jsr .10 get next valid char in src text
bcs .4
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jsr CORE.ToUpperCase
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eor (ZPPtr1),y match table char ?
asl compare only 7 bits
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bne .6 no match...get next table keyword
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bcc .2 not last char in this keyword
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jsr .10 next char in text...
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bcc .4 valid....failed
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.3 tya Keyword Len
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jmp CORE.SkipA
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.4 dey
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lda (ZPPtr1),y was last char in this keyword ?
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bmi .3
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iny
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.5 jsr CORE.IncPtr1 skip chars to next keyword
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.6 lda (ZPPtr1)
bpl .5
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jsr CORE.IncPtr1
inx
lda (ZPPtr1) Array Ending 0, lookup failed
bne .1
.9 sec
rts
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*--------------------------------------
.10 iny
lda (ZPInputBufPtr),y Get Src text char...
beq .19 end of text
bit bFlag
bmi .11 Letter expected
jmp CORE.IsOPSChar
.11 jmp CORE.IsLetter
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.19 sec
.99 rts
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*--------------------------------------
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CORE.LookupSkip sec
.HS 90 BCC
CORE.Lookup clc
php
>STYA ZPPtr1
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ldx #0
.1 ldy #$ff
.2 jsr .10 get next valid char in src text
bcs .4
jsr CORE.ToUpperCase
eor (ZPPtr1),y match table char ?
asl compare only 7 bits
bne .6 no match...get next table keyword
bcc .2 not last char in this keyword
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jsr .10 next char in text...
bcc .4 valid....failed
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.3 plp
bcc .8
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tya Keyword Len
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jmp CORE.SkipA
.4 dey
lda (ZPPtr1),y was last char in this keyword ?
bmi .3
iny
.5 jsr CORE.IncPtr1 skip chars to next keyword
.6 lda (ZPPtr1)
bpl .5
jsr CORE.IncPtr1
inx
inx
lda (ZPPtr1) Array Ending 0, lookup failed
bne .1
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plp
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.9 sec
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.8 rts
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*--------------------------------------
.10 iny
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lda (ZPInputBufPtr),y Get Src text char...
beq .9 end of text
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cmp #'$'
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bne .11
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clc
rts
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.11 jmp CORE.IsLetterOrDigit CS=end of valid chars
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*--------------------------------------
CORE.IncPtr1 inc ZPPtr1
bne .8
inc ZPPtr1+1
.8 rts
*--------------------------------------
CORE.CreateLabel
>LDA.G hLabels
jsr CORE.NewKey
bcs .9
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>STYA ZPSID
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>PUSHB.G hLabels
>PUSHW ZPSID
>PUSHWI ZPCodeBufPtr
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>PUSHWI 2 2 bytes : ADDR
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>SYSCALL SListAddData
.9 rts
*--------------------------------------
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CORE.GetLabel >PUSHB.G hLabels
>PUSHW ZPInputBufPtr
>SYSCALL SListLookup
bcs .9
>STYA ZPSID
txa
jsr CORE.SkipA
>PUSHB.G hLabels
>PUSHW ZPSID
>PUSHWI ZPADDR
>PUSHWI 2 2 bytes : ADDR
>PUSHWZ From Start
>SYSCALL SListGetData
.9 rts
*--------------------------------------
CORE.AddFWRef lda ZPCodeBufPtr+1
jsr CORE.2FWRefBuf
lda ZPCodeBufPtr
jsr CORE.2FWRefBuf
ldy #$ff
.1 iny
lda (ZPInputBufPtr),y
beq .8
jsr CORE.IsIDValid
bcs .8
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jsr CORE.2FWRefBuf
bra .1
.8 tya
jsr CORE.SkipA
lda #0
clc
*--------------------------------------
CORE.2FWRefBuf sta (ZPFWRefBufPtr)
inc ZPFWRefBufPtr
bne .8
inc ZPFWRefBufPtr+1
.8 rts
*--------------------------------------
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CORE.CreateOrGetVar
>LDA.G hVars
jsr CORE.GetAddr
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bcc .2
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jsr CORE.NewVarKey
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bcs .99
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>STYA ZPSID
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jsr CORE.GetVarType
stx ZPTYPE
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beq .1
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lda STRID
sta ZPADDR
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lda STRID+1
sta ZPADDR+1
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inc STRID
bne .10
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inc STRID+1
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bra .10
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.1 lda ZPDataBufPtr
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sta ZPADDR
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clc
adc #2 Word
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sta ZPDataBufPtr
lda ZPDataBufPtr+1
sta ZPADDR+1
adc #0
sta ZPDataBufPtr+1
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.10 >PUSHB.G hVars
>PUSHW ZPSID
>PUSHWI ZPADDR
>PUSHWI 3 3 bytes : ADDR + TYPE
>SYSCALL SListAddData
rts
*--------------------------------------
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.2 jsr CORE.GetVarType
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cpx ZPTYPE
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bne .90
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clc
rts
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.90 lda #E.TMISMATCH
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sec
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.99 rts
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*--------------------------------------
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CORE.NewVarKey >LDA.G hVars
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CORE.NewKey >PUSHA
>PUSHW ZPInputBufPtr
>SYSCALL SListNewKey
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bcs .9
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pha
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txa
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jsr CORE.SkipA
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pla Y,A = KeyID
clc
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.9 rts
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*--------------------------------------
CORE.GetAddr >PUSHA
>PUSHA for SListGetData
>PUSHW ZPInputBufPtr
>SYSCALL SListLookup
bcs .9
>STYA ZPSID
txa
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jsr CORE.SkipA
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.1 >PUSHW ZPSID
>PUSHWI ZPADDR
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>PUSHWI 3 3 bytes : ADDR + TYPE
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>PUSHWZ From Start
>SYSCALL SListGetData
rts
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.9 >POP 1
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rts
*--------------------------------------
CORE.GetVarType jsr CORE.GetChar
bcs .9
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cmp #'$'
bne .9
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inc ZPInputBufPtr
bne .1
inc ZPInputBufPtr+1 skip $
.1 tax NZ
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rts
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.9 ldx #0 Z
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rts
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*--------------------------------------
CORE.ToUpperCase
cmp #'a'
bcc .8
cmp #'z'+1
bcs .8
eor #$20
.8
CORE.ToUpperCase.RTS
rts
*--------------------------------------
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CORE.IsOPSChar phx
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ldx #ACOS.OPSChars.Cnt-1
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.1 cmp ACOS.OPSChars,x
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beq .8
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dex
bpl .1
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plx
sec
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rts
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.8 plx
clc
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rts
*--------------------------------------
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CORE.IsKW jsr CORE.IsLetter
bcs .9
>LDYA L.ACOS.KW
jmp CORE.Lookup
.9 rts
*--------------------------------------
CORE.IsEndExp cmp #')' CS = true
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beq CORE.ToUpperCase.RTS
cmp #','
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beq CORE.ToUpperCase.RTS
cmp #';'
beq CORE.ToUpperCase.RTS
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CORE.IsEndInst cmp #':' CS = true
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beq .8
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cmp #C.CR
beq .8
clc
.8 rts
*---------------------------------------
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CORE.IsIDValid cmp #'.'
clc
beq CORE.IsLetterRTS
*---------------------------------------
2021-04-08 20:30:18 +00:00
CORE.IsLetterOrDigit
jsr CORE.IsDigit10
bcc CORE.IsLetterRTS
*---------------------------------------
2021-05-09 12:39:40 +00:00
CORE.IsLetter cmp #'_' CC = true
2021-04-08 20:30:18 +00:00
bne .1
clc
rts
.1 cmp #'A'
bcc .9
cmp #'Z'+1
bcc CORE.IsLetterRTS
cmp #'a'
bcc .9
cmp #'z'+1
rts CC if lowercase
.9 sec
CORE.IsLetterRTS
rts
*---------------------------------------
CORE.IsDigit10 cmp #'0'
bcc .9
cmp #'9'+1
rts cc if ok, cs if not
.9 sec
rts
*--------------------------------------
2021-06-22 18:59:02 +00:00
CORE.CheckOP jsr CORE.GetCharNB
bcs CORE.CheckCP.CSYN
cmp #'('
bne CORE.CheckCP.CSYN
jsr CORE.GetNextCharNB skip (
clc
rts
*--------------------------------------
CORE.CheckComma jsr CORE.GetCharNB
bcs CORE.CheckCP.CSYN
cmp #','
bne CORE.CheckCP.CSYN
jsr CORE.GetNextCharNB skip ,
clc
rts
*--------------------------------------
CORE.CheckCP jsr CORE.GetCharNB
bcs CORE.CheckCP.CSYN
cmp #')'
bne CORE.CheckCP.CSYN
jsr CORE.GetNextCharNB skip )
clc
rts
CORE.CheckCP.CSYN
lda #E.CSYN
sec
rts
*--------------------------------------
2021-04-08 20:30:18 +00:00
CORE.CheckCharNB
cmp #C.SPACE
beq .9
cmp #C.LF
beq .9
cmp #C.TAB
beq .9
clc
.9 rts
*--------------------------------------
CORE.GetCharNB jsr CORE.GetChar
bcs CORE.GetNextCharNB.RTS
jsr CORE.CheckCharNB
bcc CORE.GetNextCharNB.RTS
*--------------------------------------
CORE.GetNextCharNB
jsr CORE.GetNextChar
bcs CORE.GetNextCharNB.RTS
jsr CORE.CheckCharNB
bcs CORE.GetNextCharNB
CORE.GetNextCharNB.RTS
rts
*--------------------------------------
2021-04-11 19:47:48 +00:00
CORE.SkipA clc
adc ZPInputBufPtr
sta ZPInputBufPtr
bcc .1
clc
inc ZPInputBufPtr+1
.1 rts Exit with CC for JMP to
*--------------------------------------
2021-04-08 20:30:18 +00:00
CORE.SkipLine jsr CORE.GetNextChar
bcs CORE.GetNextCharNB.RTS
cmp #C.CR
bne CORE.SkipLine
*--------------------------------------
CORE.GetNextChar
inc ZPInputBufPtr
bne CORE.GetChar
inc ZPInputBufPtr+1
*--------------------------------------
CORE.GetChar lda (ZPInputBufPtr)
bne .8
lda #MLI.E.EOF
sec
rts
.8 clc
rts
*--------------------------------------
MAN
SAVE usr/src/bin/acos.s.core
LOAD usr/src/bin/acos.s
ASM