mirror of https://github.com/A2osX/A2osX.git
460 lines
7.4 KiB
Plaintext
460 lines
7.4 KiB
Plaintext
NEW
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PREFIX
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AUTO 4,1
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*---------------------------------------
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* Global Symbol Record: (6+ bytes)
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* 0 : Len
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* 1 : Flags:
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* b7=0=pending,1=resolved
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* b6=R/W (.SE)
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* b2,b1,b0 : Size (in bytes)
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* 2-5 : 32 bits Value
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* 6+ : Local Symbols.....
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*---------------------------------------
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* Local Symbol Record: (5 bytes)
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* 0 : Local ID (1->255)
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* 1-4 : 32 bits Value (PC)
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*---------------------------------------
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SYM.Init >SYSCALL SListNew
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bcs .9
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>STA.G SYM.hGlobalList
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>LDYAI 256
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>SYSCALL getmem
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bcs .9
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>STYA ZPNameBuf
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txa
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>STA.G SYM.hNameBuf
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>LDYAI 256
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>SYSCALL getmem
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bcs .9
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>STYA ZPGlobalBuf
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txa
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>STA.G SYM.hGlobalBuf
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>LDYAI 256
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>SYSCALL getmem
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bcs .9
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>STYA ZPLookupBuf
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txa
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>STA.G SYM.hLookupBuf
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.9 rts
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*---------------------------------------
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SYM.Reset lda #0
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sta (ZPGlobalBuf)
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rts
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*---------------------------------------
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SYM.Quit >LDA.G SYM.hLookupBuf
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beq .1
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>SYSCALL FreeMem
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.1 >LDA.G SYM.hNameBuf
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beq .2
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>SYSCALL FreeMem
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.2 >LDA.G SYM.hGlobalBuf
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beq .3
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>SYSCALL FreeMem
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.3 >LDA.G SYM.hGlobalList
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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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SYM.Dump stz ZPLinePtr
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stz ZPLinePtr+1
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>LDA.G ASM.LI.ON
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bpl .1
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>LDYA L.MSG.SYMBOLS
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>SYSCALL printf
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.1 >PUSHB.G SYM.hGlobalList
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>PUSHW ZPLinePtr
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>PUSHW ZPGlobalBuf
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>PUSHW ZPNameBuf
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>SYSCALL SListGetByID
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bcc .10
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clc
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rts
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.10 stx ZPLinePtr Save Next ID
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sty ZPLinePtr+1
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>LDA.G ASM.LI.ON
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bpl .1
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ldy #SYMG.F Get Symbol Size
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lda (ZPGlobalBuf),y
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and #SYMG.F.SIZE
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tax
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beq .3
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asl
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pha
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.2 iny
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lda (ZPGlobalBuf),y
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>PUSHA
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dex
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bne .2
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plx
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.3 ldy L.MSG.EQU0,x
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lda L.MSG.EQU0+1,x
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>SYSCALL printf
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>PUSHW ZPNameBuf Label (PString)
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>LDYA L.MSG.PSTR
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>SYSCALL printf
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bcs .9
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ldy #SYMG.SIZE
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.4 tya
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cmp (ZPGlobalBuf)
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beq .7 No Local Symbol
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iny
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lda (ZPGlobalBuf),y Get ID
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pha
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ldx #4
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.5 iny
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lda (ZPGlobalBuf),y
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>PUSHA
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dex
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bne .5
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pla
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>PUSHA
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phy
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>LDYA L.MSG.LSYMBOL
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>SYSCALL printf
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ply
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bne .4
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.7 >LDYA L.MSG.CRLF
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>SYSCALL printf
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jmp .1
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rts
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.8 clc
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.9 rts
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*---------------------------------------
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SYM.NewOrGetGlobal
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>LDA.G ASM.PASS
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bne SYM.GetGlobal Pass #2: should be already defined...
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SYM.NewGlobal jsr SYM.LookupGlobal Pass #1; try to add global...
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bcc .9 Already Defined
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jsr SYM.GetName
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bcs .99
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jsr SYM.PC2Global A=PC Size
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lda #SYMG.SIZE
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sta (ZPGlobalBuf)
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clc
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rts
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.9 lda #ERR.SYMBOL.REDEF
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sec
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.99 rts
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*---------------------------------------
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SYM.GetGlobal >PUSHB.G SYM.hGlobalList
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>PUSHW ZPLinePtr
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>PUSHW ZPGlobalBuf
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>SYSCALL SListLookup
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bcs .9
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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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clc
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.1 tya
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>STA.G SYM.GlobalID+1
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txa
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>STA.G SYM.GlobalID
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rts
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.9 lda #ERR.UNDEF.SYMBOL
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sec
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rts
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*---------------------------------------
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SYM.LookupGlobal
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>PUSHB.G SYM.hGlobalList
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>PUSHW ZPLinePtr
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>PUSHW ZPLookupBuf
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>SYSCALL SListLookup
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bcs .9
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adc ZPLinePtr
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sta ZPLinePtr
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bcc .8
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inc ZPLinePtr+1
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clc
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.8
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.9 rts
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*---------------------------------------
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SYM.FlushGlobal lda (ZPGlobalBuf)
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beq .8
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>PUSHB.G SYM.hGlobalList
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>LDA.G ASM.PASS
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bne .2
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>PUSHW ZPNameBuf
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>PUSHW ZPGlobalBuf
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>SYSCALL SListAdd
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bra .3
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.2 >PUSHW.G SYM.GlobalID
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>PUSHW ZPGlobalBuf
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>SYSCALL SListUpdateByID
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.3 bcs .9
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lda #0
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sta (ZPGlobalBuf)
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rts
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.8 clc
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.9 rts
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*---------------------------------------
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SYM.GetName jsr SRC.GetChar
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bcs .9
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ldy #0
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.1 jsr SRC.IsLetterOrDigit
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bcc .2
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cmp #'.'
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beq .2
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cmp #'_'
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bne .8
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.2 sta (ZPNameBuf),y
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iny
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jsr SRC.GetNextChar
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bcc .1
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.8 lda #0
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sta (ZPNameBuf),y
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clc
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rts
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.9 lda #ERR.SYNTAX.ERROR
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sec
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rts
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*---------------------------------------
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SYM.PC2Global ldx #4
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ldy #ASM.PC
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.1 lda (pData),y
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pha
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iny
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dex
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bne .1
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ldx #4
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ldy #SYMG.V+3
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.2 pla
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sta (ZPGlobalBuf),y
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dey
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dex
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bne .2
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ldx #4
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ldy #ASM.PC+3
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.3 lda (ZPGlobalBuf),y
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bne .4
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dex
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dey
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bne .3
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.4 txa
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ldy #SYMG.F
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sta (ZPGlobalBuf),y
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txa A=PC Size
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rts
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*---------------------------------------
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SYM.Acc2Global ldx #4
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ldy #SYMG.F+4
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.1 lda SRC.ACC.SIZE,x
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sta (ZPGlobalBuf),y
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dey
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dex
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bpl .1
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clc
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rts
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*---------------------------------------
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SYM.Lookup2Acc ldy #SYMG.F+4
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ldx #4
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.1 lda (ZPLookupBuf),y
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sta SRC.ACC.SIZE,x
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dey
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dex
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bne .1
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lda (ZPLookupBuf),y
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and #SYMG.F.SIZE
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sta SRC.ACC.SIZE
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clc
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rts
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*---------------------------------------
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* Local Symbol Record: (5 bytes)
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* 0 : Local ID (1->255)
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* 1-4 : 32 bits Value (PC)
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*---------------------------------------
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SYM.NewOrGetLocalA
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tax Save ID
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lda (ZPGlobalBuf) not in a global label
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bne .1
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lda #ERR.INV.LABEL
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clc
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rts
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.1 >LDA.G ASM.PASS
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bne SYM.LookupLocal.1 Pass #2: should be already defined...
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SYM.NewLocal jsr SYM.LookupLocal.1 Pass #1; try to add
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bcc .9 Already Defined
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lda (ZPGlobalBuf)
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tay
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clc
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adc #SYML.SIZE
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bcs .90
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ldy #ASM.PC+4
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.1 dey
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lda (pData),y
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pha
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cpy #ASM.PC
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bne .1
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lda (ZPGlobalBuf)
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tay
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iny
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txa Get Back ID
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sta (ZPGlobalBuf),y
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ldx #4
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.2 pla
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iny
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sta (ZPGlobalBuf),y
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dex
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bne .2
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tya
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sta (ZPGlobalBuf)
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clc
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rts
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.90 lda #ERR.TOO.MANY.LOCAL
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* sec
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rts
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.9 lda #ERR.SYMBOL.REDEF
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sec
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rts
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*---------------------------------------
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SYM.LookupLocal tax
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SYM.LookupLocal.1
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ldy #SYMG.SIZE
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tya
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.1 cmp (ZPGlobalBuf)
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beq .9 CS if =
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txa
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iny
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cmp (ZPGlobalBuf),y
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beq .2
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tya
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clc
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adc #SYML.SIZE-1
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tay
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bcc .1
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.9 lda #ERR.UNDEF.SYMBOL
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* sec
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rts
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.2 ldx #0
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.3 iny
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lda (ZPGlobalBuf),y
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sta SRC.ACC,x
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inx
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cpx #4
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bne .3
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clc
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rts
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*---------------------------------------
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* Private Symbol Record: (9 bytes)
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* 0 : Len (8)
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* 1 : Flags:
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* b7=0=pending,1=resolved
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* 2-5 : 32 bits Value (PC)
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* 6,7 : MCID (Macro Context ID)
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* 8 : Private ID (0->255)
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*---------------------------------------
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SYM.AddPrivate
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clc
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rts
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*---------------------------------------
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SYM.LookupPrivate
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clc
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rts
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*---------------------------------------
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MAN
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SAVE /A2OSX.BUILD/BIN/DEV/ASM.S.SYM
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LOAD /A2OSX.BUILD/BIN/DEV/ASM.S
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ASM
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