mirror of https://github.com/A2osX/A2osX.git
833 lines
13 KiB
Plaintext
833 lines
13 KiB
Plaintext
NEW
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AUTO 3,1
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.LIST OFF
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*--------------------------------------
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CSH.Init >SYSCALL SListNew
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bcs .9
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>STA.G CSH.hDefines
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>SYSCALL SListNew
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bcs .9
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>STA.G CSH.hTags
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>SYSCALL SListNew
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bcs .9
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>STA.G CSH.hSymbols
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>LDYAI 256
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>SYSCALL GetMem
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bcs .9
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>STYA ZPCSHCode
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txa
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>STA.G CSH.hCode
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>LDYAI 256
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>SYSCALL GetMem
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bcs .9
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>STYA ZPCSHConst
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txa
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>STA.G CSH.hConst
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>LDYAI 256
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>SYSCALL GetMem
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bcs .9
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>STYA ZPCSHData
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txa
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>STA.G CSH.hData
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>LDYAI 256
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>SYSCALL GetMem
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bcs .9
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>STYA ZPCSHStack
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txa
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>STA.G CSH.hStack
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lda #0
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>STA.G CSH.ConstPtr
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>STA.G CSH.StackPtr
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* clc
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.9 rts
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*--------------------------------------
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CSH.Quit >LDA.G CSH.hSymbols
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beq .1
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>SYSCALL SListFree
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.1 >LDA.G CSH.hTags
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beq .2
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>SYSCALL SListFree
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.2 >LDA.G CSH.hDefines
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beq .3
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>SYSCALL SListFree
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.3 lda hInclude
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beq .4
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>SYSCALL FClose
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.4 lda hDefine
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jsr .7
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>LDA.G hFileBuf
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jsr .7
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>LDA.G CSH.hStack
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jsr .7
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>LDA.G CSH.hData
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jsr .7
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>LDA.G CSH.hConst
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jsr .7
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>LDA.G CSH.hCode
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.7 beq CSH.Quit.RTS
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>SYSCALL FreeMem
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CSH.Quit.RTS rts
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*--------------------------------------
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CSH.Run jsr CSH.GetCharNB
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bcs CSH.Quit.RTS
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CSH.Run.1 cmp #C.CR empty line....
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beq .2
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cmp #'/'
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bne .3 comments ...
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jmp CSH.COMMENTS
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.2 jmp CSH.GetNextChar Skip CR and exit
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.3 cmp #'#' directive ?
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bne .4
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jmp CSH.DIR
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.4 cmp #'}' End of block ?
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bne .40
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jsr CSH.CheckStack must be something on stack....
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bcs .9
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jsr CSH.GetNextCharNB Skip '}'
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jsr CSH.Pop was expected....
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jsr CSH.Pop get stacked Cmd...
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tax
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jmp (J.CSH.KW.END,x)
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.40 jsr CSH.IsLetter
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bcc .5
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bra .99 error, todo : PREOPS ++ --.....
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.5 jsr CSH.SavePtr Save Ptr, in case of while,for....
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>LDYA L.CSH.KW
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jsr CSH.LookupID
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bcs .6 not an internal CSH keyword....
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jsr CSH.KW.JMP
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bcs .9
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bra .8
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.6 jsr CSH.GetVar
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bcs .7
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>STYA ZPVarID
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jsr CSH.GetVarDef Get Type & ptr...
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bcs .9
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jsr CSH.GetCharNB
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bcs .9
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cmp #'=' TODO: all AOPS
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bne .99
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jsr CSH.GetNextChar Skip =
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bcs .99
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lda ZPVarType
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jsr CSH.ExpEval
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bcs .9
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jsr CSH.SetVarValueFromStack X = Exp Type
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bcs .9
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jsr CSH.GetChar
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cmp #';'
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beq .8
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.99 lda #E.CSYN
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sec
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.9 rts
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.7 lda #0 no return value type check required
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jsr CSH.fCall
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bcs .9
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jsr CSH.GetVarSize X = returned value type
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clc A = Sizeof CC to ignore Pointer hMem
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adc pStack
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sta pStack Discard value on stack
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.8 jsr CSH.GetNextCharNB Skip ;
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bcs .9
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cmp #C.CR
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beq .80
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jmp CSH.Run.1
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.80 jmp CSH.GetNextChar Skip CR
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*--------------------------------------
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CSH.COMMENTS jsr CSH.GetNextChar
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cmp #'/'
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bne .90
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jmp CSH.SkipLine skip line.....
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.90 lda #E.CSYN
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sec
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rts
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*--------------------------------------
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CSH.SkipLine jsr CSH.GetNextChar
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bcs .9
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cmp #C.CR
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bne CSH.SkipLine
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clc
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.9 rts
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*--------------------------------------
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CSH.SavePtr >LDYA ZPInputBufPtr
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>STYA.G CSH.BufPtrSave
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rts
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*--------------------------------------
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CSH.LookupFN sec
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.HS 90 BCC
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CSH.LookupID clc
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>STYA ZPPtr1
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ror
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>STA.G CSH.LookupOpt
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jsr CSH.GetIDLen
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bra CSH.Lookup
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CSH.LookupOP >STYA ZPPtr1
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>STZ.G CSH.LookupOpt
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jsr CSH.GetOPLen
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CSH.Lookup phy Y = len
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ldx #0
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.1 lda (ZPPtr1)
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beq .9 Ending 0, not found....
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pla
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pha Get Back Len
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cmp (ZPPtr1) Same Len ?
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bne .4
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tay
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.2 lda (ZPPtr1),y
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.3 dey
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cmp (ZPInputBufPtr),y
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bne .4
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tya
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bne .2
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pla Found keyword...
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clc
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adc ZPInputBufPtr ..advance Ptr to char after it..
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sta ZPInputBufPtr
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bcc .31
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inc ZPInputBufPtr+1
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.31 lda ZPPtr1
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sec
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adc (ZPPtr1)
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tay
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lda ZPPtr1+1
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adc #0
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clc Y,A = F() def, X = F() index
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.8 rts
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.4 inx
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inx
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lda (ZPPtr1)
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jsr CSH.ZPPtr1AddAp1
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>LDA.G CSH.LookupOpt
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bpl .1
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ldy #$0 Start at Y=1 for VOID func()
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.6 iny
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lda (ZPPtr1),y
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bne .6
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tya
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jsr CSH.ZPPtr1AddAp1
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bra .1
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.9 pla
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sec
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rts
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*--------------------------------------
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CSH.ZPPtr1Next inc ZPPtr1
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bne .8
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inc ZPPtr1+1
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.8 rts
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*--------------------------------------
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CSH.ZPPtr1AddAp1
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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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.1 rts
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*--------------------------------------
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* Input : ZPInputBufPtr
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* Output : Y,A = VarID
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*--------------------------------------
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CSH.AddSymbol >LDA.G CSH.hSymbols
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jsr CSH.NewKey
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bcs .9
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>STYA ZPVarID
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ldx ZPVarType
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jsr CSH.GetVarSize CS if pointer
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sta ZPVarSizeOf
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* clc / sec
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lda ZPCSHData
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sta ZPVarDataPtr
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adc ZPVarSizeOf
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sta ZPCSHData
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lda ZPCSHData+1
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sta ZPVarDataPtr+1
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adc ZPVarSizeOf+1
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sta ZPCSHData+1
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>LDA.G CSH.DataPtr
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clc
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adc ZPVarSizeOf
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sta (pData),y
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bcs .99
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>PUSHB.G CSH.hSymbols
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>PUSHW ZPVarID
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>PUSHWI ZPVarDef
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>PUSHWI 6
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>SYSCALL SListAddData
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.9 rts
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.99 lda #E.OOM
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.HS 2C BIT ABS
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CSH.TMISMATCH lda #E.TMISMATCH
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sec
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rts
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*--------------------------------------
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CSH.fDeclaration
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lda #CSH.Q.FUNC
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tsb ZPVarType
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jsr CSH.GetNextCharNB Skip (
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bcs .9
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.1 cmp #')'
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beq .5
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jsr CSH.GetDeclaration
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bcs .99
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.5 jsr CSH.GetNextCharNB Skip )
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jsr CSH.SkipLine
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clc
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rts
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.9 lda #E.CSYN
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sec
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.99 rts
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*--------------------------------------
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CSH.GetDeclaration
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>ENTER 4
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>LDYA L.CSH.MTYPES
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jsr CSH.LookupID
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bcs .9
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bra .8
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.9 lda #E.CSYN
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sec
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.8 >LEAVE
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rts
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*--------------------------------------
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CSH.NewKey >PUSHA
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>PUSHW ZPInputBufPtr
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>SYSCALL SListNewKey
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bcs .9
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pha
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txa
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* clc
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adc ZPInputBufPtr
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sta ZPInputBufPtr
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bcc .1
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inc ZPInputBufPtr+1
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.1 clc
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pla
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.9 rts
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*--------------------------------------
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* X=Type
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*--------------------------------------
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CSH.SetVarValueFromStack
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cpx ZPVarType X = type
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bne .99
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ldy #0
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.1 lda (pStack)
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sta (ZPVarDataPtr),y
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inc pStack
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iny
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cpy ZPVarSizeOf
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bne .1
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clc
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rts
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.99 lda #E.TMISMATCH
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sec
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rts
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*--------------------------------------
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CSH.GetDefine >PUSHB.G CSH.hDefines
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jsr CSH.Get
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bcs .9
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pha
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phy
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>PUSHB.G CSH.hDefines
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ply
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pla
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>PUSHYA KeyID
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>PUSHWZ Allocate..
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>PUSHWZ len = 0 (string mode)
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>PUSHWZ From Start
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>SYSCALL SListGetData
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bcs .9
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stx hDefine
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>LDYA ZPInputBufPtr
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>STYA.G CSH.SaveDefine
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txa
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>SYSCALL GetMemPtr
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>STYA ZPInputBufPtr
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.9 rts
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*--------------------------------------
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CSH.GetVar >PUSHB.G CSH.hSymbols
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CSH.Get >PUSHW ZPInputBufPtr
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>SYSCALL SListLookup
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bcs .9
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pha
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txa
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* clc
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adc ZPInputBufPtr
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sta ZPInputBufPtr
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bcc .1
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inc ZPInputBufPtr+1
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clc
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.1 pla Y,A = VarID
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.9 rts
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*--------------------------------------
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CSH.GetVarDef phy
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pha
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>PUSHB.G CSH.hSymbols
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pla
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>PUSHA
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pla
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>PUSHA KeyID
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>PUSHWI ZPVarDef
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>PUSHWI 6 6 bytes
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>PUSHWI 0 From Start
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>SYSCALL SListGetData
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rts
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*--------------------------------------
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* Input :
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* X=Var Type (or 0)
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* YA=VarID
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* Output : Stack, X = Var Type
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*--------------------------------------
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CSH.GetVarValueOnStack
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phx
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phy
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pha
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>PUSHB.G CSH.hSymbols
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pla
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>PUSHA
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pla
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>PUSHA KeyID
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>PUSHEA.G CSH.VarDef
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>PUSHWI 6 6 bytes
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>PUSHWI 0 From Start
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>SYSCALL SListGetData
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plx
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bcs .9
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txa
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beq .1 any type
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>CMP.G CSH.VarDef Type
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beq .2
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and #CSH.Q.PPPOINTER
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beq .99 not pointer....mismatch
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>EOR.G CSH.VarDef
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and #CSH.Q.PPPOINTER
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bne .99 compare only pointer depth
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.1 >LDA.G CSH.VarDef
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beq *
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.2 tax
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jsr CSH.GetVarSize
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pha
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>LDA.G CSH.VarDef+4
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sta ZPPtr3
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iny
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lda (pData),y
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sta ZPPtr3+1
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ply
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.3 dey
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lda (ZPPtr3),y
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>PUSHA
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tya
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bne .3
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>LDA.G CSH.VarDef
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tax
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clc X = Var Type
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.9 rts
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.99 lda #E.TMISMATCH
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sec
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rts
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*--------------------------------------
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* Input : Value on Stack, X = Var Type
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* Output : CC = true, CS = false
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*--------------------------------------
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CSH.IsValue0 cpx #CSH.T.FLOAT
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bcc .1 char,int,long
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ldy CSH.TYPESIZE,x
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lda (ZPVarDataPtr),y
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bne .9
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.8 clc
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rts
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.1 jsr CSH.GetVarSize
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tax
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lda #0
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.2 ora (pStack)
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inc pStack
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dex
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bne .2
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tax
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beq .8
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.9 sec
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rts
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*--------------------------------------
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* Stack
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*--------------------------------------
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CSH.CheckStack tax
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>LDA.G CSH.StackPtr
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beq .9
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tay
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txa
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cmp (ZPCSHStack),y
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bne .9
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clc
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rts
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.9 lda #E.CSYN
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sec
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rts
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*--------------------------------------
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CSH.Push pha
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>LDA.G CSH.StackPtr
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dec
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beq .9
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sta (pData),y
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tay
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pla
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sta (ZPCSHStack),y
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clc
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rts
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.9 pla
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lda #E.STKOVERFLOW
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sec
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rts
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*--------------------------------------
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CSH.Pop >LDA.G CSH.StackPtr
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beq .9
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pha
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inc
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sta (pData),y
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ply
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lda (ZPCSHStack),y
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clc
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rts
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.9 lda #E.STACKERROR
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sec
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rts
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*--------------------------------------
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* CHAR related Subs.....
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*--------------------------------------
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CSH.GetOPLen ldy #0
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.1 iny
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lda (ZPInputBufPtr),y
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beq .8
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jsr CSH.IsOPChar
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bcc .1
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.8 tya
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rts
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*--------------------------------------
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CSH.GetIDLen ldy #0
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.1 iny
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lda (ZPInputBufPtr),y
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beq .8
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jsr CSH.IsLetterOrDigit
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bcc .1
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.8 tya
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rts
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*--------------------------------------
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CSH.SkipStatement
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clc
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rts
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*--------------------------------------
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CSH.SkipBlock ldy #0 not in "", TOTO:skip comments
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ldx #1 starting with 1 '{' for now....
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.1 jsr CSH.GetNextCharNB
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bcs .9
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cmp #'{'
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bne .2
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tya
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||
bmi .1
|
||
inx
|
||
bra .1
|
||
|
||
.2 cmp #'}'
|
||
bne .3
|
||
|
||
tya
|
||
bmi .1
|
||
dex
|
||
bne .1
|
||
clc
|
||
rts
|
||
.3 cmp #'"'
|
||
bne .1
|
||
tya
|
||
eor #$ff
|
||
tay
|
||
bra .1
|
||
jmp CSH.GetNextCharNB skip '}'
|
||
.9 rts
|
||
*--------------------------------------
|
||
CSH.GetCharNB jsr CSH.GetChar
|
||
bcs CSH.GetNextCharNB.RTS
|
||
jsr CSH.CheckCharNB
|
||
bcc CSH.GetNextCharNB.RTS
|
||
*--------------------------------------
|
||
CSH.GetNextCharNB
|
||
jsr CSH.GetNextChar
|
||
bcs CSH.GetNextCharNB.RTS
|
||
jsr CSH.CheckCharNB
|
||
bcs CSH.GetNextCharNB
|
||
CSH.GetNextCharNB.RTS
|
||
rts
|
||
*--------------------------------------
|
||
CSH.CheckSpace jsr CSH.GetChar
|
||
bcs .90
|
||
cmp #C.SPACE
|
||
bne .90
|
||
|
||
jsr CSH.GetNextCharNB
|
||
bcc CSH.GetNextCharNB.RTS
|
||
|
||
.90 lda #E.CSYN
|
||
sec
|
||
rts
|
||
*--------------------------------------
|
||
CSH.CheckCharNB cmp #C.SPACE
|
||
beq .9
|
||
cmp #C.LF
|
||
beq .9
|
||
cmp #C.TAB
|
||
beq .9
|
||
clc
|
||
.9 rts
|
||
*--------------------------------------
|
||
CSH.GetNextChar inc ZPInputBufPtr
|
||
bne CSH.GetChar
|
||
inc ZPInputBufPtr+1
|
||
*--------------------------------------
|
||
CSH.GetChar lda (ZPInputBufPtr)
|
||
bne .8
|
||
|
||
lda hDefine
|
||
beq .1
|
||
|
||
stz hDefine
|
||
|
||
phx
|
||
phy
|
||
>SYSCALL FreeMem
|
||
|
||
>LDYA.G CSH.SaveDefine
|
||
>STYA ZPInputBufPtr
|
||
|
||
ply
|
||
plx
|
||
bra CSH.GetChar
|
||
|
||
.1 lda hInclude
|
||
beq .9
|
||
|
||
stz hInclude
|
||
phx
|
||
phy
|
||
>SYSCALL FreeMem
|
||
|
||
>LDYA.G CSH.SaveInclude
|
||
>STYA ZPInputBufPtr
|
||
|
||
ply
|
||
plx
|
||
bra CSH.GetChar
|
||
|
||
.8 clc
|
||
rts
|
||
|
||
.9 lda #MLI.E.EOF
|
||
sec
|
||
rts
|
||
*---------------------------------------
|
||
CSH.IsOPChar ldx #CSH.OPChars.Cnt-1
|
||
|
||
.1 cmp CSH.OPChars,x
|
||
beq .8
|
||
dex
|
||
bpl .1
|
||
sec
|
||
rts
|
||
.8 clc
|
||
rts
|
||
*---------------------------------------
|
||
CSH.IsLetterOrDigit
|
||
jsr CSH.IsDigit10
|
||
bcc CSH.IsLetterRTS
|
||
*---------------------------------------
|
||
CSH.IsLetter cmp #'_'
|
||
bne .1
|
||
clc
|
||
rts
|
||
.1 cmp #'A'
|
||
bcc .9
|
||
cmp #'Z'+1
|
||
bcc CSH.IsLetterRTS
|
||
|
||
cmp #'a'
|
||
bcc .9
|
||
cmp #'z'+1
|
||
rts CC if lowercase
|
||
|
||
.9 sec
|
||
CSH.IsLetterRTS rts
|
||
*---------------------------------------
|
||
CSH.IsDigit10 cmp #'0'
|
||
bcc .9
|
||
cmp #'9'+1
|
||
rts cc if ok, cs if not
|
||
.9 sec
|
||
rts
|
||
*--------------------------------------
|
||
* in : X = type, out : X = type, A = size
|
||
*--------------------------------------
|
||
CSH.GetVarSize txa
|
||
and #CSH.Q.PPPOINTER
|
||
bne .2
|
||
|
||
txa
|
||
and #$f
|
||
phx
|
||
tax
|
||
lda CSH.TYPESIZE,x
|
||
plx
|
||
|
||
clc
|
||
rts
|
||
|
||
.2 sec +1 for hMem Storage
|
||
lda #2
|
||
rts
|
||
*--------------------------------------
|
||
MAN
|
||
SAVE usr/src/bin/csh.s.core
|
||
LOAD usr/src/bin/csh.s
|
||
ASM
|