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34 KiB
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\ 05Jul86 \ Target compiler loadscr UH 07Jun86\ Idea and first Implementation by ks/bp \ Implemented on 6502 by ks/bp \ ultraFORTH83-Version by bp/we \ Atari 520 ST - Version by we \ CP/M 2.2 Version by UH Onlyforth hex Assembler nonrelocate Vocabulary Ttools Vocabulary Defining 1 10 +thru \ Target compiler 11 13 +thru \ Target Tools 14 16 +thru \ Redefinitions save 17 20 +thru \ Predefinitions Onlyforth \ Target header pointers UH 26Mar88 Create lastname $20 allot Variable tdp : there tdp @ ; Variable displace Variable image Variable ?thead ?thead off Variable tlast tlast off Variable glast' glast' off Variable tdoes> Variable >in: Variable tvoc tvoc off Variable tvoc-link tvoc-link off 0 | Constant <forw> 0 | Constant <res> | : Is> ( cfa -- ) [compile] Does> here 3 - swap >body ! 0 ] ; \ Image and byteorder UH 26Mar88 Code c+! ( 8b addr -- ) H pop D pop E A mov M add A M mov Next end-code Code /block ( addr -- +n blk ) H pop L E mov H A mov 3 ani A D mov H A mov $FC ani rrc rrc A L mov 0 H mvi dpush jmp end-code : >image ( addr1 - addr2 ) displace @ ( - /block image @ + block ) + ; : >heap ( from quan - ) dup hallot heap swap cmove ; \\ : c+! ( 8b addr -- ) dup c@ rot + swap c! ; : /block ( addr -- +n blk ) b/blk /mod ; \ Ghost-creating UH 26Mar88 | : (make.ghost ( str -- cfa.ghost ) dp push count dup 1 $1F uwithin not Abort" invalid Ghostname" here 2+ place here state @ \ address of link field IF context @ ELSE current THEN @ under @ , \ link 1 here c+! here c@ allot bl c, \ name here over - swap \ offset to codefield <forw> , 0 , 0 , \ code and parameter field here over - >heap \ move to heap heap rot ! \ link heap + ; \ codefield address | : Make.Ghost ( -- cfa.ghost ) name (make.ghost ; \ ghost words UH 28Apr88 : gfind ( string - cfa tf / string ff ) >r bl r@ count + c! 1 r@ c+! r@ find -1 r> c+! ; : (ghost ( string -- cfa ) gfind ?exit (make.ghost ; : ghost ( -- cfa ) name (ghost ; : gdoes> ( cfa.ghost - cfa.does ) dp push 4+ dup @ IF @ exit THEN \ defined here <forw> , 0 , 4 >heap \ forward-chain heap dup rot ! ; \ forward-link \ ghost utilities 2UH 26Mar88 : g' ( -- cfa.ghost ) name gfind 0= abort" ?" ; | : .ghost-type ( cfa.ghost -- ) @ <forw> case? IF ." forward" exit THEN <res> - Abort" type unknown" ." resolved " ; | : .does-type ( cfa.does -- ) @ <forw> case? IF ." forward-define" exit THEN <res> - Abort" does-type unknown" ." resolved-define" ; : '. ( -- ) g' dup .ghost-type dup 2+ @ 5 u.r 4+ @ ?dup 0=exit dup .does-type 2+ @ 5 u.r ; ' ' Alias h' \ .unresolved UH 26Mar88 | : forward? ( cfa -- f ) dup @ <forw> = swap 2+ @ and ; | : ghost? ( nfa -- f ) count $1F and + 1- c@ bl = ; | : unresolved? ( addr - f ) 2+ dup ghost? not IF drop false exit THEN name> dup forward? IF drop true exit THEN 4+ @ forward? ; | : unresolved-words ( thread -- ) BEGIN @ ?dup WHILE dup unresolved? IF dup 2+ .name ?cr THEN REPEAT ; : .unresolved ( -- ) voc-link @ BEGIN dup 4- unresolved-words @ ?dup 0= UNTIL ; \ Extending Vocabularys for Target-Compilation 2UH 26Mar88 : Vocabulary Vocabulary 0 , here tvoc @ , tvoc ! ; Vocabulary Transient tvoc off Root definitions : T Transient ; immediate : H Forth ; immediate OnlyForth \ Transient primitives UH 26Mar88 Code byte> ( 8bl 8bh -- 16b ) D pop H pop E H mov hpush jmp end-code Code >byte ( 16b -- 8bh 8bl ) H pop H E mov 0 H mvi H D mov dpush jmp end-code Transient definitions : c@ ( addr -- 8b ) H >image c@ ; : c! ( 8b addr -- ) H >image c! ( update ) ; : @ ( addr -- n ) dup T c@ H swap 1+ T c@ H byte> ; : ! ( n addr -- ) >r >byte r@ T c! H r> 1+ T c! H ; : cmove ( from.mem to.target quan -) bounds ?DO dup H c@ I T c! H 1+ LOOP drop ; : on ( addr -- ) true swap T ! H ; : off ( addr -- ) false swap T ! H ; \ Transient primitives UH 26Mar88 : here ( -- taddr ) there ; : allot ( n -- ) Tdp +! ; : c, ( c -- ) T here c! 1 allot H ; : , ( n -- ) T here ! 2 allot H ; : ," ( -- ) Ascii " parse dup T c, under here swap cmove allot H ; : fill ( addr len c -- ) -rot bounds ?DO dup I T c! H LOOP drop ; : erase ( addr len -- ) 0 T fill H ; : blank ( addr len -- ) bl T fill H ; : here! ( addr -- ) H tdp ! ; \ Resolving UH 26Mar88 Forth definitions : resolve ( cfa.ghost cfa.target -- ) 2dup swap >body dup @ >r ! over @ <res> = IF drop >name space .name ." exists" ?cr rdrop exit THEN r> swap >r <res> rot ! ?dup 0= IF rdrop exit THEN BEGIN dup T @ H 2dup = abort" resolve loop" r@ rot T ! H ?dup 0= UNTIL rdrop ; : resdoes> ( cfa.ghost cfa.target -- ) swap gdoes> dup @ <res> = IF 2+ ! exit THEN swap resolve ; ' <forw> Is> ( -- ) dup @ there rot ! T , H ; \ forward link ' <res> Is> ( -- ) @ T , H ; \ compile target.cfa \ move-threads UH 26Mar88 : move-threads Tvoc @ Tvoc-link @ BEGIN over ?dup WHILE 2- @ over 2- T ! @ H swap @ swap REPEAT error" some undef. Target-Vocs left" drop ; | : tlatest ( - addr) Current @ 6 + ; : save-target \ filename $100 dup >image there rot - savefile ; \ compiling names into targ. UH 26Mar88 | : viewfield ( -- n ) H blk @ $200 + ; \ in File #1 : (theader ( -- ) ?thead @ IF 1 ?thead +! exit THEN >in push name dup c@ 1 $20 uwithin not abort" invalid Targetname" viewfield T , H there tlatest @ T , H tlatest ! \ link there dup tlast ! over c@ 1+ dup T allot cmove H ; : Theader ( -- ) tlast off (theader Ghost dup glast' ! there resolve ; \ prebuild defining words bp2UH 26Mar88 | : executable? ( adr - adr f ) dup ; | : tpfa, there , ; | : (prebuild ( cfa.adr -- ) >in push Create here 2- ! ; : prebuild ( adr 0.from.: - 0 ) 0 ?pairs executable? dup >r IF [compile] Literal compile (prebuild ELSE drop THEN compile Theader Ghost gdoes> , r> IF compile tpfa, THEN 0 ; immediate restrict \ code portion of def.words bp2UH 26Mar88 : dummy 0 ; : DO> ( - adr.of.jmp.dodoes> 0 ) [compile] Does> here 3 - compile @ 0 ] ; \ The Target-Assembler UH 26Mar88 Forth definitions | Create relocate ] T c, , c@ here allot ! c! H [ Transient definitions : Assembler H [ Assembler ] relocate >codes ! Assembler ; : >label ( 16b -) H >in @ name gfind rot >in ! IF over resolve dup THEN drop Constant ; : Label H there T >label Assembler H ; : Code H Theader there 2+ T , Assembler H ; \ immed. restr. ' \ compile bp2UH 26Mar88 : ?pairs ( n1 n2 -- ) H - abort" unstructured" ; : >mark ( - addr) H there T 0 , H ; : >resolve ( addr -) H there over - swap T ! H ; : <mark ( - addr) H there ; : <resolve ( addr -) H there - T , H ; : immediate H Tlast @ ?dup 0=exit dup T c@ $40 or swap c! H ; : restrict H Tlast @ ?dup 0=exit dup T c@ $80 or swap c! H ; : ' ( <name> - cfa) H g' dup @ <res> - abort" ?" 2+ @ ; : | H ?thead @ ?exit ?thead on ; : compile H Ghost , ; immediate restrict \ Target tools UH 26Mar88Onlyforth Ttools also definitions | : ttype ( adr n -) bounds ?DO I T c@ H dup bl > IF emit ELSE drop ascii . emit THEN LOOP ; : .name ( nfa -) ?dup IF dup 1+ swap T c@ H $1F and ttype ELSE ." ??? " THEN space ?cr ; | : nfa? ( cfa lfa - nfa / cfa ff) BEGIN dup WHILE 2dup 2+ dup T c@ H $1F and + 1+ = IF 2+ nip exit THEN T @ H REPEAT ; : >name ( cfa - nfa / ff) Tvoc BEGIN @ dup WHILE under 2- @ nfa? ?dup IF nip exit THEN swap REPEAT nip ; \ Ttools for decompiling ks29jun85we | : ?: dup 4 u.r ." :" ; | : @? dup T @ H 6 u.r ; | : c? dup T c@ H 3 .r ; : s ( adr - adr+) ?: space c? 3 spaces dup 1+ over T c@ H ttype dup T c@ H + 1+ ; : n ( adr - adr+2) ?: @? 2 spaces dup T @ H [ Ttools ] >name .name H 2+ ; : d ( adr n - adr+n) 2dup swap ?: swap 0 DO c? 1+ LOOP 2 spaces -rot ttype ; \ Tools for decompiling bp204dec85we : l ( adr - adr+2) ?: 5 spaces @? 2+ ; : c ( adr - adr+1) 1 d ; : b ( adr - adr+1) ?: @? dup T @ H over + 5 u.r 2+ ; : dump ( adr n -) bounds ?DO cr I 10 d drop stop? IF LEAVE THEN 10 +LOOP ; : view T ' H [ Ttools ] >name ?dup IF 4 - T @ H list THEN ; \ reinterpretation def.-words UH 26Mar88 Onlyforth : redefinition ( -- ) tdoes> @ 0=exit >in push [ ' parser >body ] Literal push state push context push >in: @ >in ! name [ ' Transient 2+ ] Literal (find nip ?exit cr ." Redefinition: " here .name >in: @ >in ! : Defining interpret tdoes> off ; \ Create..does> structure 27Apr86 | : (;tcode Tlast @ dup T c@ + 1+ ! H rdrop ; | : changecfa compile lit tdoes> @ , compile (;tcode ; Defining definitions : ;code 0 ?pairs changecfa reveal rdrop rdrop ; immediate restrict Defining ' ;code Alias does> immediate restrict : ; [compile] ; rdrop rdrop ; immediate restrict \ redefinition conditionals bp27jun85we ' DO Alias DO immediate restrict ' ?DO Alias ?DO immediate restrict ' LOOP Alias LOOP immediate restrict ' IF Alias IF immediate restrict ' THEN Alias THEN immediate restrict ' ELSE Alias ELSE immediate restrict ' BEGIN Alias BEGIN immediate restrict ' UNTIL Alias UNTIL immediate restrict ' WHILE Alias WHILE immediate restrict ' REPEAT Alias REPEAT immediate restrict \ clear Liter. Ascii ['] ." UH 26Mar88 Onlyforth Transient definitions : clear True abort" There are ghosts" ; : Literal ( n -) H dup $FF00 and IF T compile lit , H exit THEN T compile clit c, H ; immediate : Ascii H bl word 1+ c@ state @ 0=exit T [compile] Literal H ; immediate : ['] T ' [compile] Literal H ; immediate restrict : " T compile (" ," H ; immediate restrict : ." T compile (." ," H ; immediate restrict : even H ; immediate \ machen nichts beim 8080 : align H ; immediate : halign H ; immediate \ Target compilation ] [ bp0UH 26Mar88 Forth definitions : tcompile ( str -- ) count lastname place lastname find ?dup IF 0> IF execute exit THEN drop lastname THEN gfind IF execute exit THEN number? ?dup IF 0> IF swap T [compile] Literal THEN [compile] Literal H exit THEN (ghost execute ; Transient definitions : ] H State on ['] tcompile is parser ; \ Target conditionals bp27jun85we : IF T compile ?branch >mark H 1 ; immediate restrict : THEN abs 1 T ?pairs >resolve H ; immediate restrict : ELSE T 1 ?pairs compile branch >mark swap >resolve H -1 ; immediate restrict : BEGIN T <mark H 2 ; immediate restrict : WHILE T 2 ?pairs 2 compile ?branch >mark -2 H 2swap ; immediate restrict | : (repeat T 2 ?pairs <resolve H BEGIN dup -2 = WHILE drop T >resolve H REPEAT ; : UNTIL T compile ?branch (repeat H ; immediate restrict : REPEAT T compile branch (repeat H ; immediate restrict \ Target conditionals bp27jun85we : DO T compile (do >mark H 3 ; immediate restrict : ?DO T compile (?do >mark H 3 ; immediate restrict : LOOP T 3 ?pairs compile (loop compile endloop >resolve H ; immediate restrict : +LOOP T 3 ?pairs compile (+loop compile endloop >resolve H ; immediate restrict \ predefinitions bp27jun85we : abort" T compile (abort" ," H ; immediate : error" T compile (err" ," H ; immediate Forth definitions Variable torigin Variable tudp 0 tudp ! : >user T c@ H torigin @ + ; \ Datatypes bp2UH 07Nov87 Transient definitions : origin! H torigin ! ; : user' ( - 8b) T ' 2 + c@ H ; : uallot ( n -) H tudp @ swap tudp +! ; DO> >user ; : User prebuild User 2 T uallot c, ; DO> ; : Create prebuild (create ; DO> T @ H ; : Constant prebuild Constant T , ; : Variable Create 2 T allot ; \ Datatypes UH 07Nov87 dummy : Vocabulary H >in @ Vocabulary >in ! T prebuild Vocabulary 0 , 0 , here H tvoc-link @ T , H tvoc-link ! ; dummy : (create prebuild (create ; \ target defining words 27Apr86 Do> ; : Defer prebuild Defer 2 T allot ; : Is T ' H >body State @ IF T compile (is , H ELSE T ! H THEN ; immediate | : dodoes> T compile (;code H Glast' @ there resdoes> there tdoes> ! ; : ;code 0 T ?pairs dodoes> Assembler H [compile] [ redefinition ; immediate restrict : does> T dodoes> $CD c, compile (dodoes> H ; immediate restrict \ : Alias ; bUH 07Jun86 dummy : : H tdoes> off >in @ >in: ! T prebuild : H current @ context ! T ] H 0 ; : Create: Create H current @ context ! T ] H 0 ; : Alias ( n -- ) H Tlast off (theader Ghost over resolve tlast @ T c@ H 20 or tlast @ T c! , H ; : ; T 0 ?pairs compile unnest [compile] [ H redefinition ; immediate restrict \ predefinitions UH 26Mar88 : compile T compile compile H ; immediate restrict : Host H Onlyforth Ttools also ; : Compiler T Host H Transient also definitions ; : [compile] H ghost execute ; immediate restrict \ : Onlypatch H there 3 - 0 tdoes> ! 0 ; Onlyforth : Target Onlyforth Transient also definitions ; Transient definitions Ghost c, drop |