mirror of https://github.com/A2osX/A2osX.git
656 lines
9.7 KiB
Plaintext
656 lines
9.7 KiB
Plaintext
NEW
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AUTO 3,1
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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/Private Symbol Record: (4 bytes)
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* 0 : Local ID (1->255)
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* 1 : Macro Context ID (private)
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* 2-3 : 16 bits offset (PC)
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*---------------------------------------
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SYM.Init lda #SL..+SL._
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>SYSCALL SListNew
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bcs .9
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>STA.G SYM.hList
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>LDYAI 256
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>SYSCALL GetMem
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bcs .9
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>STYA ZPSymbolBuf
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txa
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>STA.G SYM.hBuf
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.9 rts
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*---------------------------------------
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SYM.Quit >LDA.G SYM.hBuf
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beq .1
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>SYSCALL FreeMem
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.1 >LDA.G SYM.hList
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beq .8
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>SYSCALL SListFree
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.8 rts
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*---------------------------------------
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SYM.NewGlobal >LDA.G ASM.PASS
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bne SYM.GetGlobal
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jsr SYM.StoreGlobal Store previous if any
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bcs .99
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>STZ.G MAC.CtxID
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>STA.G MAC.CtxNextID
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>PUSHB.G SYM.hList
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>PUSHW ZPLinePtr Pass #1: try to add global...
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>SYSCALL SListNewKey
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bcs .9 Already Defined
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>STYA.G SYM.ID
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jsr SRC.SkipX
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.1 stz SRC.ACC.F
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jsr SYM.PC2Acc
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jsr SYM.Acc2Global
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lda #SYMG
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>STA.G SYM.BufPtr
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tay
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lda #0
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sta (ZPSymbolBuf),y
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.DO ASMDBG=1
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lda #'1'
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>SYSCALL putchar
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jsr SYM.Dump.G
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jsr OUT.PrintCR
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.FIN
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clc
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rts
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.9 cmp #E.DUPKEY
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bne .99
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lda #E.SYMBOL.REDEF
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.99
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SYM.NewGlobal.RTS
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rts
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*---------------------------------------
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SYM.GetGlobal >PUSHB.G SYM.hList Pass #2: should be already defined...
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>PUSHW ZPLinePtr
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>SYSCALL SListLookup
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bcs SYM.NewGlobal.RTS
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>STYA.G SYM.ID
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jsr SRC.SkipX
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.1 >PUSHB.G SYM.hList Pass #2: Restore full context
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>PUSHW.G SYM.ID
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>PUSHW ZPSymbolBuf
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>PUSHWI $ffff all
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>PUSHWZ from Start
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>SYSCALL SListGetData
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bcs .99
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lda (ZPSymbolBuf)
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and #SYMG.F.EQU
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bne .8
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>LDA.G ASM.PC
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ldy #SYMG.V
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cmp (ZPSymbolBuf),y
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bne .7
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>LDA.G ASM.PC+1
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ldy #SYMG.V+1
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cmp (ZPSymbolBuf),y
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beq .8
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.7 lda #E.OUT.OF.SYNC
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sec
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rts
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.8 .DO ASMDBG=1
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lda #'2'
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>SYSCALL putchar
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jsr SYM.Dump.G
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jsr OUT.PrintCR
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.FIN
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lda #SYMG
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>STA.G SYM.BufPtr
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>STZ.G MAC.CtxID
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>STA.G MAC.CtxNextID
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clc
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rts
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.9 lda #E.UNDEF.SYMBOL
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sec
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.99 rts
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*---------------------------------------
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SYM.LookupGlobal
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>PUSHB.G SYM.hList
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>PUSHW ZPLinePtr
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>SYSCALL SListLookup
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bcs .4
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>STYA ZPPtr1 KeyID
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jsr SRC.SkipX
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.1 >LDA.G SYM.ID
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cmp ZPPtr1
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bne .3
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iny
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lda (pData),y
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cmp ZPPtr1+1
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bne .3
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ldy #SYMG-1
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.2 lda (ZPSymbolBuf),y
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sta SRC.ACC.F,y
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dey
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bne .2 Keep ACC.F unchanged
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clc
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.99 rts
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.3 >PUSHB.G SYM.hList
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>PUSHW ZPPtr1 KeyID
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>PUSHW L.SRC.ACC.SIZE
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>PUSHWI SYMG-1 Get only Global value
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>PUSHWI 1 Skip SYMG.F
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>SYSCALL SListGetData
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rts
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.4 >LDA.G ASM.PASS pass#2?
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bne .9 yes, undefined symbol
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lda #SYMG.F.FWREF
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tsb SRC.ACC.F
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lda #2
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sta SRC.ACC.SIZE
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lda #$ff
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sta SRC.ACC
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sta SRC.ACC+1
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.5 jsr SRC.GetNextChar
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bcs .8
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jsr SRC.IsLetterOrDigit
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bcc .5
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cmp #'.'
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beq .5
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cmp #'_'
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beq .5
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.8 clc
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rts
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.9 lda #E.UNDEF.SYMBOL
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sec
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rts
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*---------------------------------------
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SYM.StoreGlobal >LDA.G ASM.PASS
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bne .8
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>LDA.G SYM.BufPtr
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beq .8
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>PUSHB.G SYM.hList
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>PUSHW.G SYM.ID
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>PUSHW ZPSymbolBuf
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>LDA.G SYM.BufPtr
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tay
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lda #0
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cpy #SYMG
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beq .1
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iny Add 1 for \0 after locals/privates
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bne .1
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inc
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.1 >PUSHYA
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>SYSCALL SListAddData
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bcs .9
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>STZ.G SYM.BufPtr
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.8 clc
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.9 rts
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*---------------------------------------
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SYM.UpdateGlobal
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>PUSHB.G SYM.hList
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>PUSHW.G SYM.ID
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>PUSHW ZPSymbolBuf
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>LDA.G SYM.BufPtr
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tay
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lda #0
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cpy #SYMG
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beq .1
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iny Add 1 for \0 after locals/privates
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bne .1
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inc
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.1 >PUSHYA
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>SYSCALL SListSetData
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bcs .9
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>STZ.G SYM.BufPtr
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.9 rts
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*---------------------------------------
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SYM.PC2Acc ldy #ASM.PC+3
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ldx #3
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.1 lda (pData),y
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sta SRC.ACC,x
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dey
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dex
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bpl .1
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lda #2
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sta SRC.ACC.SIZE
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rts
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*---------------------------------------
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SYM.Acc2Global ldy #SYMG-1
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.2 lda SRC.ACC.F,y
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sta (ZPSymbolBuf),y
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dey
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bpl .2
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rts
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*---------------------------------------
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SYM.NewLocalA tax Save Local ID
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>LDA.G SYM.BufPtr not in a global label
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beq .91
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>LDA.G ASM.PASS
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bne .20
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*---------------------------------------
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jsr SYM.LookupLocalX Pass #1: try to add
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bcc .9 Already Defined
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>LDA.G SYM.BufPtr
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* sec
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adc #SYML
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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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ldy #SYMG.V
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sec
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pla
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sbc (ZPSymbolBuf),y
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sta SYM.LocalOfs
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iny
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pla
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sbc (ZPSymbolBuf),y
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sta SYM.LocalOfs+1
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iny
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pla
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sbc (ZPSymbolBuf),y
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bne .97
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iny
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pla
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sbc (ZPSymbolBuf),y
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bne .98
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>LDA.G MAC.CtxID Get Macro Context ID
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pha
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>LDA.G SYM.BufPtr
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tay
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txa Get Back ID
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sta (ZPSymbolBuf),y
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pla
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iny
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sta (ZPSymbolBuf),y
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lda SYM.LocalOfs
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iny
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sta (ZPSymbolBuf),y
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lda SYM.LocalOfs+1
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iny
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sta (ZPSymbolBuf),y
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iny
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lda #0
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sta (ZPSymbolBuf),y ending \0
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tya
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>STA.G SYM.BufPtr
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lda (ZPSymbolBuf)
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ora #SYMG.F.LOCALS
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sta (ZPSymbolBuf)
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clc
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rts
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.91 lda #E.INV.LABEL
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sec
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rts
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.90 lda #E.TOO.MANY.LOCAL
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sec
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rts
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.97 pla
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.98 lda #E.RANGE
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sec
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rts
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.9 lda #E.SYMBOL.REDEF
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sec
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rts
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*---------------------------------------
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.20 >LDA.G SYM.BufPtr Pass #2: setup SYM.BufPtr in case of .EQ
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clc
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adc #SYML
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sta (pData),y
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* clc
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rts
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*---------------------------------------
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SYM.LookupLocalX
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lda (ZPSymbolBuf)
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and #SYMG.F.LOCALS
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beq .99
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ldy #SYMG
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.1 lda (ZPSymbolBuf),y
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beq .99
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phy SYML.ID
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txa
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cmp (ZPSymbolBuf),y
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bne .4
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>LDA.G MAC.CtxID
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ply
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phy
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iny SYML.CtxID
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cmp (ZPSymbolBuf),y
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bne .4
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ldy #SYMG.V
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ldx #0
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.2 lda (ZPSymbolBuf),y
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sta SRC.ACC,x
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inx
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iny
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cpy #SYMG
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bne .2
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ply
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iny
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iny SYML.O
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lda (ZPSymbolBuf),y
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clc
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adc SRC.ACC
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sta SRC.ACC
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iny
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lda (ZPSymbolBuf),y
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adc SRC.ACC+1
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sta SRC.ACC+1
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bcc .3
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inc SRC.ACC+2
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.3 clc
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rts
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.4 pla
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clc
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adc #SYML
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tay
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bra .1
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.99 lda #E.UNDEF.SYMBOL
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sec
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rts
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*---------------------------------------
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SYM.Dump.End >PUSHW L.MSG.SUMMARY
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>PUSHW ZPPtr2
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>PUSHBI 2
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jmp OUT.Print
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SYM.Dump.8 clc
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rts
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*---------------------------------------
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SYM.Dump >LDA.G bListAll
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bmi SYM.Dump.1
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>LDA.G ASM.LI.ON
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bpl SYM.Dump.8
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SYM.Dump.1 >LDYA L.MSG.SYMBOLS
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>SYSCALL PutS
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stz ZPPtr2
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lda #1
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sta ZPPtr2+1
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.1 >LDYA ZPPtr2
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>STYA ZPPtr1
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>PUSHB.G SYM.hList
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>PUSHW ZPPtr1
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>PUSHW ZPTmpBuf
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>SYSCALL SListGetByID
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bcs SYM.Dump.End
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>STYA ZPPtr2 Save Next ID
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>PUSHB.G SYM.hList
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>PUSHW ZPPtr1 KeyID
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>PUSHW ZPSymbolBuf
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>PUSHWI $ffff All
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>PUSHWZ from Start
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>SYSCALL SListGetData
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bcs .9
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jsr SYM.Dump.GLP
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bcc .1
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.9 rts
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*---------------------------------------
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SYM.Dump.GLP jsr SYM.Dump.G
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bcs .9
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>LDYA ZPTmpBuf Label
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>SYSCALL PutS
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ldx #5
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lda (ZPSymbolBuf)
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bit #SYMG.F.LOCALS
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beq .2
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jsr SYM.Dump.LP
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bcs .9
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.2 cpx #5 already CR printed ?
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beq .8
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jmp OUT.PrintCR
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.8 clc
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.9 rts
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*---------------------------------------
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SYM.Dump.G ldy #SYMG.SIZE Get Symbol Size
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lda (ZPSymbolBuf),y
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pha
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asl
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tax
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>PUSHB L.MSG.EQU0+1,x
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>PUSHB L.MSG.EQU0,x
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pla
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pha
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tax byte count
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clc
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adc #SYMG.V
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tay
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.2 dey
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lda (ZPSymbolBuf),y
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>PUSHA
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dex
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bne .2
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pla Byte Count
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.3 >PUSHA
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>SYSCALL PrintF
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rts
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*---------------------------------------
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SYM.Dump.LP ldy #SYMG
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ldx #5
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.1 lda (ZPSymbolBuf),y
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beq .8
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phy
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phx
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tax ID
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iny
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lda (ZPSymbolBuf),y MacID
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bne .3
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>PUSHW L.MSG.LSYMBOL
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txa
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>PUSHA
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jsr SYM.Dump.PushValueY
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lda #5
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bra .5
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.3 >PUSHW L.MSG.PSYMBOL
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txa
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>PUSHA
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>PUSHB (ZPSymbolBuf),y
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jsr SYM.Dump.PushValueY
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lda #6
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.5 >PUSHA
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>SYSCALL PrintF
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plx
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dex
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bne .6
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jsr OUT.PrintCR
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ldx #5
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.6 pla
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clc
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adc #SYML
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tay
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bra .1
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.8 rts
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*---------------------------------------
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SYM.Dump.PushValueY
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iny
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lda (ZPSymbolBuf),y
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sta SRC.ACC
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iny
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lda (ZPSymbolBuf),y
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sta SRC.ACC+1
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stz SRC.ACC+2
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stz SRC.ACC+3
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ldy #SYMG.V
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ldx #0
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clc
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.1 lda (ZPSymbolBuf),y
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adc SRC.ACC,x
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sta SRC.ACC,x
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iny
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inx
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txa
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eor #4
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bne .1
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ldx #3
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.2 lda SRC.ACC,x
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>PUSHA
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dex
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bpl .1
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rts
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*---------------------------------------
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MAN
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SAVE usr/src/bin/asm.s.sym
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LOAD usr/src/bin/asm.s
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ASM
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