Annotation of gforth/cross.fs, revision 1.8
1.1 anton 1: \ CROSS.FS The Cross-Compiler 06oct92py
1.8 ! pazsan 2: \ $Id: cross.fs,v 1.7 1994/07/08 15:00:30 anton Exp $
1.1 anton 3: \ Idea and implementation: Bernd Paysan (py)
4: \ Copyright 1992 by the ANSI figForth Development Group
5:
6: \ Log:
7: \ changed in ; [ to state off 12may93jaw
8: \ included place +place 12may93jaw
9: \ for a created word (variable, constant...)
10: \ is now an alias in the target voabulary.
11: \ this means it is no longer necessary to
12: \ switch between vocabularies for variable
13: \ initialization 12may93jaw
14: \ discovered error in DOES>
15: \ replaced !does with (;code) 16may93jaw
16: \ made complete redesign and
17: \ introduced two vocs method
18: \ to be asure that the right words
19: \ are found 08jun93jaw
20: \ btw: ! works not with 16 bit
21: \ targets 09jun93jaw
22: \ added: 2user and value 11jun93jaw
23:
24: include other.fs \ ansforth extentions for cross
25:
1.5 pazsan 26: : comment? ( c-addr u -- c-addr u )
27: 2dup s" (" compare 0=
28: IF postpone (
29: ELSE 2dup s" \" compare 0= IF postpone \ THEN
30: THEN ;
31:
1.1 anton 32: decimal
33:
34: \ number? 11may93jaw
35:
36: \ checks for +, -, $, & ...
37: : leading? ( c-addr u -- c-addr u doubleflag negflag base )
38: 2dup 1- chars + c@ [char] . = \ process double
39: IF dup 1 chars = IF over 1 swap c! false ELSE 1 chars - true THEN
40: \ only if more than only . ( may be number output! )
41: \ if only . => store garbage
42: ELSE false THEN >r \ numbers
43: false -rot base @ -rot
44: BEGIN over c@
45: dup [char] - =
46: IF drop >r >r >r
47: drop true r> r> r> 0 THEN
48: dup [char] + =
49: IF drop 0 THEN
50: dup [char] $ =
51: IF drop >r >r drop 16 r> r> 0 THEN
52: dup [char] & =
53: IF drop >r >r drop 10 r> r> 0 THEN
54: 0= IF 1 chars - swap char+ swap false ELSE true THEN
55: over 0= or
56: UNTIL
57: rot >r rot r> r> -rot ;
58:
59: : number? ( c-addr -- n/d flag )
60: \ return -1 if cell 1 if double 0 if garbage
61: 0 swap 0 swap \ create double number
62: count leading?
63: base @ >r base !
64: >r >r
65: >number IF 2drop false r> r> 2drop
66: r> base ! EXIT THEN
67: drop r> r>
68: IF IF dnegate 1
69: ELSE drop negate -1 THEN
70: ELSE IF 1 ELSE drop -1 THEN
71: THEN r> base ! ;
72:
73:
74:
75: \ Begin CROSS COMPILER:
76:
77: \ GhostNames 9may93jaw
78: \ second name source to search trough list
79:
80: VARIABLE GhostNames
81: 0 GhostNames !
82: : GhostName ( -- addr )
83: here GhostNames @ , GhostNames ! here 0 ,
84: name count
85: \ 2dup type space
86: dup c, here over chars allot swap move align ;
87:
88: hex
89:
90:
91: Vocabulary Cross
92: Vocabulary Target
93: Vocabulary Ghosts
94: VOCABULARY Minimal
95: only Forth also Target also also
96: definitions Forth
97:
98: : T previous Cross also Target ; immediate
99: : G Ghosts ; immediate
100: : H previous Forth also Cross ; immediate
101:
102: forth definitions
103:
104: : T previous Cross also Target ; immediate
105: : G Ghosts ; immediate
106:
107: : >cross also Cross definitions previous ;
108: : >target also Target definitions previous ;
109: : >minimal also Minimal definitions previous ;
110:
111: H
112:
113: >CROSS
114:
115: \ Variables 06oct92py
116:
117: -1 Constant NIL
118: Variable image
119: Variable tlast NIL tlast ! \ Last name field
120: Variable tlastcfa \ Last code field
121: Variable tdoes \ Resolve does> calls
122: Variable bit$
123: Variable tdp
124: : there tdp @ ;
125:
126: \ Parameter for target systems 06oct92py
127:
128: include machine.fs
129:
130: >TARGET
131:
132: \ Byte ordering and cell size 06oct92py
133:
134: : cell+ cell + ;
135: : cells cell<< lshift ;
136: : chars ;
1.6 anton 137: : floats float * ;
138:
1.1 anton 139: >CROSS
140: : cell/ cell<< rshift ;
141: >TARGET
142: 20 CONSTANT bl
143: -1 Constant NIL
144: -2 Constant :docol
145: -3 Constant :docon
146: -4 Constant :dovar
1.3 pazsan 147: -5 Constant :douser
148: -6 Constant :dodoes
149: -7 Constant :doesjump
1.1 anton 150:
151: >CROSS
152:
153: endian 0 pad ! -1 pad c! pad @ 0<
154: = [IF] : bswap ; immediate
155: [ELSE] : bswap ( big / little -- little / big ) 0
156: cell 1- FOR bits/byte lshift over
157: [ 1 bits/byte lshift 1- ] Literal and or
158: swap bits/byte rshift swap NEXT nip ;
159: [THEN]
160:
161: \ Memory initialisation 05dec92py
162: \ Fixed bug in else part 11may93jaw
163:
164: [IFDEF] Memory \ Memory is a bigFORTH feature
1.5 pazsan 165: also Memory
1.1 anton 166: : initmem ( var len -- )
167: 2dup swap handle! >r @ r> erase ;
1.5 pazsan 168: toss
1.1 anton 169: [ELSE]
170: : initmem ( var len -- )
171: tuck allocate abort" CROSS: No memory for target"
172: ( len var adr ) dup rot !
173: ( len adr ) swap erase ;
174: [THEN]
175:
176: \ MakeKernal 12dec92py
177:
178: >MINIMAL
179: : makekernal ( targetsize -- targetsize )
180: bit$ over 1- cell>bit rshift 1+ initmem
181: image over initmem tdp off ;
182:
183: >CROSS
184: \ Bit string manipulation 06oct92py
185: \ 9may93jaw
186: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
187: : bits ( n -- n ) chars Bittable + c@ ;
188:
189: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
190: : +bit ( addr n -- ) >bit over c@ or swap c! ;
1.4 pazsan 191: : -bit ( addr n -- ) >bit invert over c@ and swap c! ;
1.1 anton 192: : relon ( taddr -- ) bit$ @ swap cell/ +bit ;
1.4 pazsan 193: : reloff ( taddr -- ) bit$ @ swap cell/ -bit ;
1.1 anton 194:
195: \ Target memory access 06oct92py
196:
197: : align+ ( taddr -- rest )
198: cell tuck 1- and - [ cell 1- ] Literal and ;
199:
200: >TARGET
201: : aligned ( taddr -- ta-addr ) dup align+ + ;
202: \ assumes cell alignment granularity (as GNU C)
203:
204: >CROSS
205: : >image ( taddr -- absaddr ) image @ + ;
206: >TARGET
207: : @ ( taddr -- w ) >image @ bswap ;
208: : ! ( w taddr -- ) >r bswap r> >image ! ;
209: : c@ ( taddr -- char ) >image c@ ;
210: : c! ( char taddr -- ) >image c! ;
1.7 anton 211: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
212: : 2! ( x1 x2 taddr -- ) T swap over ! cell+ ! H ;
1.1 anton 213:
214: \ Target compilation primitives 06oct92py
215: \ included A! 16may93jaw
216:
217: : here ( -- there ) there ;
218: : allot ( n -- ) tdp +! ;
219: : , ( w -- ) T here H cell T allot ! H ;
220: : c, ( char -- ) T here 1 allot c! H ;
221: : align ( -- ) T here H align+ 0 ?DO bl T c, H LOOP ;
222:
223: : A! dup relon T ! H ;
224: : A, ( w -- ) T here H relon T , H ;
225:
226: >CROSS
227:
228: \ threading modell 13dec92py
229:
230: \ generic threading modell
231: : docol, ( -- ) :docol T A, 0 , H ;
232:
233: >TARGET
234: : >body ( cfa -- pfa ) T cell+ cell+ H ;
235: >CROSS
236:
1.3 pazsan 237: : dodoes, ( -- ) T :doesjump A, 0 , H ;
1.1 anton 238:
239: \ Ghost Builder 06oct92py
240:
241: \ <T T> new version with temp variable 10may93jaw
242:
243: VARIABLE VocTemp
244:
245: : <T get-current VocTemp ! also Ghosts definitions ;
246: : T> previous VocTemp @ set-current ;
247:
248: 4711 Constant <fwd> 4712 Constant <res>
249: 4713 Constant <imm>
250:
251: \ iForth makes only immediate directly after create
252: \ make atonce trick! ?
253:
254: Variable atonce atonce off
255:
256: : NoExec true ABORT" CROSS: Don't execute ghost" ;
257:
258: : GhostHeader <fwd> , 0 , ['] NoExec , ;
259:
260: : >magic ; : >link cell+ ; : >exec cell+ cell+ ;
261: : >end 3 cells + ;
262:
263: : Make-Ghost ( "name" -- ghost )
264: >in @ GhostName swap >in !
265: <T Create atonce @ IF immediate atonce off THEN
266: here tuck swap ! ghostheader T>
267: DOES> >exec @ execute ;
268:
269: \ ghost words 14oct92py
270: \ changed: 10may93py/jaw
271:
272: : gfind ( string -- ghost true/1 / string false )
273: \ searches for string in word-list ghosts
274: \ !! wouldn't it be simpler to just use search-wordlist ? ae
1.5 pazsan 275: dup count [ ' ghosts >body ] ALiteral search-wordlist
276: \ >r get-order 0 set-order also ghosts r> find >r >r
277: >r r@ IF >body nip THEN r> ;
278: \ set-order r> r@ IF >body THEN r> ;
1.1 anton 279:
280: VARIABLE Already
281:
282: : ghost ( "name" -- ghost )
283: Already off
284: >in @ name gfind IF Already on nip EXIT THEN
285: drop >in ! Make-Ghost ;
286:
287: \ resolve 14oct92py
288:
289: : resolve-loop ( ghost tcfa -- ghost tcfa )
290: >r dup >link @
291: BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
292:
293: \ exists 9may93jaw
294:
295: : exists ( ghost tcfa -- )
296: over GhostNames
297: BEGIN @ dup
298: WHILE 2dup cell+ @ =
299: UNTIL
300: nip 2 cells + count cr ." CROSS: Exists: " type 4 spaces
301: swap cell+ !
302: ELSE true ABORT" CROSS: Ghostnames inconsistent"
303: THEN ;
304:
305: : resolve ( ghost tcfa -- )
306: over >magic @ <fwd> <> IF exists EXIT THEN
307: resolve-loop over >link ! <res> swap >magic ! ;
308:
309: \ gexecute ghost, 01nov92py
310:
311: : do-forward ( ghost -- )
312: >link dup @ there rot ! T A, H ;
313: : do-resolve ( ghost -- )
314: >link @ T A, H ;
315:
316: : gexecute ( ghost -- ) dup @
317: <fwd> = IF do-forward ELSE do-resolve THEN ;
318: : ghost, ghost gexecute ;
319:
320: \ .unresolved 11may93jaw
321:
322: variable ResolveFlag
323:
324: \ ?touched 11may93jaw
325:
326: : ?touched ( ghost -- flag ) dup >magic @ <fwd> = swap >link @
327: 0 <> and ;
328:
329: : ?resolved ( ghostname -- )
330: dup cell+ @ ?touched
331: IF cell+ cell+ count cr type ResolveFlag on ELSE drop THEN ;
332:
333: >MINIMAL
334: : .unresolved ( -- )
335: ResolveFlag off cr ." Unresolved: "
336: Ghostnames
337: BEGIN @ dup
338: WHILE dup ?resolved
339: REPEAT drop ResolveFlag @ 0= IF ." Nothing!" THEN cr ;
340:
341: >CROSS
342: \ Header states 12dec92py
343:
344: : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
345:
346: VARIABLE ^imm
347:
348: >TARGET
349: : immediate 20 flag!
350: ^imm @ @ dup <imm> = ?EXIT
351: <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
352: <imm> ^imm @ ! ;
1.8 ! pazsan 353: : restrict 40 flag! ;
1.1 anton 354: >CROSS
355:
356: \ ALIAS2 ansforth conform alias 9may93jaw
357:
358: : ALIAS2 create here 0 , DOES> @ execute ;
359: \ usage:
360: \ ' alias2 bla !
361:
362: \ Target Header Creation 01nov92py
363:
364: : string, ( addr count -- )
365: dup T c, H bounds DO I c@ T c, H LOOP ;
366: : name, ( "name" -- ) name count string, T align H ;
367: : view, ( -- ) ( dummy ) ;
368:
369: VARIABLE CreateFlag CreateFlag off
370:
371: : (Theader ( "name" -- ghost ) T align H view,
372: tlast @ dup 0> IF T 1 cells - THEN A, H there tlast !
373: >in @ name, >in ! T here H tlastcfa !
374: CreateFlag @ IF
375: >in @ alias2 swap >in ! \ create alias in target
376: >in @ ghost swap >in !
377: swap also ghosts ' previous swap ! \ tick ghost and store in alias
378: CreateFlag off
379: ELSE ghost THEN
380: dup >magic ^imm ! \ a pointer for immediate
381: Already @ IF dup >end tdoes !
382: ELSE 0 tdoes ! THEN
383: 80 flag! ;
384:
385: VARIABLE ;Resolve 1 cells allot
386:
387: : Theader ( "name" -- ) (THeader there resolve 0 ;Resolve ! ;
388:
389: >TARGET
390: : Alias ( cfa -- ) \ name
391: (THeader over resolve T A, H 80 flag! ;
392: >CROSS
393:
394: \ Conditionals and Comments 11may93jaw
395:
396: : ;Cond
397: postpone ;
398: swap ! ; immediate
399:
400: : Cond: ( -- ) \ name {code } ;
401: atonce on
402: ghost
403: >exec
404: :NONAME ;
405:
406: : restrict? ( -- )
407: \ aborts on interprete state - ae
408: state @ 0= ABORT" CROSS: Restricted" ;
409:
410: : Comment ( -- )
411: >in @ atonce on ghost swap >in ! ' swap >exec ! ;
412:
413: Comment ( Comment \
414:
415: \ Predefined ghosts 12dec92py
416:
417: ghost 0= drop
418: ghost branch ghost ?branch 2drop
419: ghost (do) ghost (?do) 2drop
420: ghost (for) drop
421: ghost (loop) ghost (+loop) 2drop
422: ghost (next) drop
1.2 pazsan 423: ghost unloop ghost ;S 2drop
1.1 anton 424: ghost lit ghost (compile) ghost ! 2drop drop
425: ghost (;code) ghost noop 2drop
426: ghost (.") ghost (S") ghost (ABORT") 2drop drop
427:
428: \ compile 10may93jaw
429:
430: : compile ( -- ) \ name
431: restrict?
432: name gfind dup 0= ABORT" CROSS: Can't compile "
433: 0> ( immediate? )
434: IF >exec @ compile,
435: ELSE postpone literal postpone gexecute THEN ;
436: immediate
437:
438: >TARGET
439: : ' ( -- cfa ) name gfind 0= ABORT" CROSS: undefined "
440: dup >magic @ <fwd> = ABORT" CROSS: forward " >link @ ;
441:
442: Cond: ['] compile lit ghost gexecute ;Cond
443:
444: >CROSS
445: \ tLiteral 12dec92py
446:
447: : lit, ( n -- ) compile lit T , H ;
448: : alit, ( n -- ) compile lit T A, H ;
449:
450: >TARGET
451: Cond: Literal ( n -- ) restrict? lit, ;Cond
452: Cond: ALiteral ( n -- ) restrict? alit, ;Cond
453:
454: : Char ( "<char>" -- ) bl word char+ c@ ;
455: Cond: [Char] ( "<char>" -- ) restrict? Char lit, ;Cond
456:
457: >CROSS
458: \ Target compiling loop 12dec92py
459: \ ">tib trick thrown out 10may93jaw
460: \ number? defined at the top 11may93jaw
461:
462: \ compiled word might leave items on stack!
463: : tcom ( in name -- )
464: gfind ?dup IF 0> IF nip >exec @ execute
465: ELSE nip gexecute THEN EXIT THEN
466: number? dup IF 0> IF swap lit, THEN lit, drop
467: ELSE 2drop >in !
468: ghost gexecute THEN ;
469:
470: >TARGET
471: \ : ; DOES> 13dec92py
472: \ ] 9may93py/jaw
473:
474: : ] state on
475: BEGIN
476: BEGIN >in @ name
477: dup c@ 0= WHILE 2drop refill 0=
478: ABORT" CROSS: End of file while target compiling"
479: REPEAT
480: tcom
481: state @
482: 0=
483: UNTIL ;
484:
485: \ by the way: defining a second interpreter (a compiler-)loop
486: \ is not allowed if a system should be ans conform
487:
488: : : ( -- colon-sys ) \ Name
489: (THeader ;Resolve ! there ;Resolve cell+ !
490: docol, depth T ] H ;
491:
1.2 pazsan 492: Cond: EXIT ( -- ) restrict? compile ;S ;Cond
1.6 anton 493:
494: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
1.2 pazsan 495:
1.1 anton 496: Cond: ; ( -- ) restrict?
497: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
498: ELSE true ABORT" CROSS: Stack empty" THEN
1.2 pazsan 499: compile ;S state off
1.1 anton 500: ;Resolve @
501: IF ;Resolve @ ;Resolve cell+ @ resolve THEN
502: ;Cond
503: Cond: [ restrict? state off ;Cond
504:
505: >CROSS
506: : !does :dodoes tlastcfa @ tuck T ! cell+ ! H ;
507:
508: >TARGET
509: Cond: DOES> restrict?
510: compile (;code) dodoes, tdoes @ ?dup IF @ T here H resolve THEN
511: ;Cond
512: : DOES> dodoes, T here H !does depth T ] H ;
513:
514: >CROSS
515: \ Creation 01nov92py
516:
517: \ Builder 11may93jaw
518:
519: : Builder ( Create do: "name" -- )
520: >in @ alias2 swap dup >in ! >r >r
521: Make-Ghost rot swap >exec ! ,
522: r> r> >in !
523: also ghosts ' previous swap !
524: DOES> dup >exec @ execute ;
525:
526: : gdoes, ( ghost -- ) >end @ dup >magic @ <fwd> <>
527: IF dup >link @ dup 0< IF T A, 0 , H drop EXIT THEN drop THEN
1.4 pazsan 528: :dodoes T A, H gexecute T here H cell - reloff ;
1.1 anton 529:
530: : TCreate ( ghost -- )
531: CreateFlag on
532: Theader dup gdoes,
533: >end @ >exec @ execute ;
534:
535: : Build: ( -- [xt] [colon-sys] )
536: :noname postpone TCreate ;
537:
538: : gdoes> ( ghost -- addr flag )
539: state @ IF gexecute true EXIT THEN
540: cell+ @ T >body H false ;
541:
542: \ DO: ;DO 11may93jaw
543: \ changed to ?EXIT 10may93jaw
544:
545: : (does>) postpone does> ; immediate \ second level does>
546:
547: : DO: ( -- addr [xt] [colon-sys] )
548: here ghostheader
549: :noname
550: postpone (does>) postpone gdoes> postpone ?EXIT ;
551:
552: : ;DO ( addr [xt] [colon-sys] -- )
553: postpone ; ( S addr xt )
554: over >exec ! ; immediate
555:
556: : by ( -- addr ) \ Name
557: ghost >end @ ;
558:
559: >TARGET
560: \ Variables and Constants 05dec92py
561:
562: Build: ;
563: DO: ( ghost -- addr ) ;DO
564: Builder Create
565: by Create :dovar resolve
566:
567: Build: T 0 , H ;
568: by Create
569: Builder Variable
570:
571: Build: T 0 A, H ;
572: by Create
573: Builder AVariable
574:
1.3 pazsan 575: \ User variables 04may94py
576:
577: >CROSS
578: Variable tup 0 tup !
579: Variable tudp 0 tudp !
580: : u, ( n -- udp )
581: tup @ tudp @ + T ! H
582: tudp @ dup cell+ tudp ! ;
583: : au, ( n -- udp )
584: tup @ tudp @ + T A! H
585: tudp @ dup cell+ tudp ! ;
586: >TARGET
587:
588: Build: T 0 u, , H ;
589: DO: ( ghost -- up-addr ) T @ H tup @ + ;DO
1.1 anton 590: Builder User
1.3 pazsan 591: by User :douser resolve
1.1 anton 592:
1.3 pazsan 593: Build: T 0 u, , 0 u, drop H ;
594: by User
1.1 anton 595: Builder 2User
596:
1.3 pazsan 597: Build: T 0 au, , H ;
598: by User
1.1 anton 599: Builder AUser
600:
601: Build: ( n -- ) T , H ;
602: DO: ( ghost -- n ) T @ H ;DO
603: Builder Constant
604: by Constant :docon resolve
605:
606: Build: ( n -- ) T A, H ;
607: by Constant
608: Builder AConstant
609:
610: Build: T 0 , H ;
611: by Constant
612: Builder Value
613:
614: Build: ( -- ) compile noop ;
615: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
616: Builder Defer
617:
618: \ structural conditionals 17dec92py
619:
620: >CROSS
621: : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
622: : sys? ( sys -- sys ) dup 0= ?struc ;
623: : >mark ( -- sys ) T here 0 , H ;
624: : >resolve ( sys -- ) T here over - swap ! H ;
625: : <resolve ( sys -- ) T here - , H ;
626: >TARGET
627:
628: \ Structural Conditionals 12dec92py
629:
630: Cond: BUT restrict? sys? swap ;Cond
631: Cond: YET restrict? sys? dup ;Cond
632:
633: >CROSS
634: Variable tleavings
635: >TARGET
636:
637: Cond: DONE ( addr -- ) restrict? tleavings @
638: BEGIN 2dup u> 0= WHILE dup T @ H swap >resolve REPEAT
639: tleavings ! drop ;Cond
640:
641: >CROSS
642: : (leave T here H tleavings @ T , H tleavings ! ;
643: >TARGET
644:
645: Cond: LEAVE restrict? compile branch (leave ;Cond
646: Cond: ?LEAVE restrict? compile 0= compile ?branch (leave ;Cond
647:
648: \ Structural Conditionals 12dec92py
649:
650: Cond: AHEAD restrict? compile branch >mark ;Cond
651: Cond: IF restrict? compile ?branch >mark ;Cond
652: Cond: THEN restrict? sys? dup T @ H ?struc >resolve ;Cond
653: Cond: ELSE restrict? sys? compile AHEAD swap compile THEN ;Cond
654:
655: Cond: BEGIN restrict? T here H ;Cond
656: Cond: WHILE restrict? sys? compile IF swap ;Cond
657: Cond: AGAIN restrict? sys? compile branch <resolve ;Cond
658: Cond: UNTIL restrict? sys? compile ?branch <resolve ;Cond
659: Cond: REPEAT restrict? over 0= ?struc compile AGAIN compile THEN ;Cond
660:
661: \ Structural Conditionals 12dec92py
662:
663: Cond: DO restrict? compile (do) T here H ;Cond
664: Cond: ?DO restrict? compile (?do) (leave T here H ;Cond
665: Cond: FOR restrict? compile (for) T here H ;Cond
666:
667: >CROSS
668: : loop] dup <resolve cell - compile DONE compile unloop ;
669: >TARGET
670:
671: Cond: LOOP restrict? sys? compile (loop) loop] ;Cond
672: Cond: +LOOP restrict? sys? compile (+loop) loop] ;Cond
673: Cond: NEXT restrict? sys? compile (next) loop] ;Cond
674:
675: \ String words 23feb93py
676:
677: : ," [char] " parse string, T align H ;
678:
679: Cond: ." restrict? compile (.") T ," H ;Cond
680: Cond: S" restrict? compile (S") T ," H ;Cond
681: Cond: ABORT" restrict? compile (ABORT") T ," H ;Cond
682:
683: Cond: IS T ' >body H compile ALiteral compile ! ;Cond
684: : IS T ' >body ! H ;
685:
686: \ LINKED ERR" ENV" 2ENV" 18may93jaw
687:
688: \ linked list primitive
689: : linked T here over @ A, swap ! H ;
690:
691: : err" s" ErrLink linked" evaluate T , H
692: [char] " parse string, T align H ;
693:
694: : env" [char] " parse s" EnvLink linked" evaluate
695: string, T align , H ;
696:
697: : 2env" [char] " parse s" EnvLink linked" evaluate
698: here >r string, T align , , H
699: r> dup T c@ H 80 and swap T c! H ;
700:
701: \ compile must be last 22feb93py
702:
703: Cond: compile ( -- ) restrict? \ name
704: name gfind dup 0= ABORT" CROSS: Can't compile"
705: 0> IF gexecute
706: ELSE dup >magic @ <imm> =
707: IF gexecute
708: ELSE compile (compile) gexecute THEN THEN ;Cond
709:
710: Cond: postpone ( -- ) restrict? \ name
711: name gfind dup 0= ABORT" CROSS: Can't compile"
712: 0> IF gexecute
713: ELSE dup >magic @ <imm> =
714: IF gexecute
715: ELSE compile (compile) gexecute THEN THEN ;Cond
716:
717: >MINIMAL
718: also minimal
719: \ Usefull words 13feb93py
720:
721: : KB 400 * ;
722:
723: \ define new [IFDEF] and [IFUNDEF] 20may93jaw
724:
725: : there? name gfind IF >magic @ <fwd> <> ELSE drop false THEN ;
726:
727: : [IFDEF] there? postpone [IF] ;
728: : [IFUNDEF] there? 0= postpone [IF] ;
729:
730: \ C: \- \+ Conditional Compiling 09jun93jaw
731:
732: : C: >in @ there? 0=
733: IF >in ! T : H
734: ELSE drop
735: BEGIN bl word dup c@
736: IF count comment? s" ;" compare 0= ?EXIT
737: ELSE refill 0= ABORT" CROSS: Out of Input while C:"
738: THEN
739: AGAIN
740: THEN ;
741:
742: also minimal
743:
744: : \- there? IF postpone \ THEN ;
745: : \+ there? 0= IF postpone \ THEN ;
746:
747: : [IF] postpone [IF] ;
748: : [THEN] postpone [THEN] ;
749: : [ELSE] postpone [ELSE] ;
750:
751: Cond: [IF] [IF] ;Cond
752: Cond: [IFDEF] [IFDEF] ;Cond
753: Cond: [IFUNDEF] [IFUNDEF] ;Cond
754: Cond: [THEN] [THEN] ;Cond
755: Cond: [ELSE] [ELSE] ;Cond
756:
757: \ save-cross 17mar93py
758:
759: \ i'm not interested in bigforth features this time 10may93jaw
760: \ [IFDEF] file
761: \ also file
762: \ [THEN]
763: \ included throw after create-file 11may93jaw
764:
765: endian Constant endian
766:
767: : save-cross ( "name" -- )
768: bl parse ." Saving to " 2dup type
769: w/o bin create-file throw >r
770: image @ there r@ write-file throw
771: bit$ @ there 1- cell>bit rshift 1+ r@ write-file throw
772: r> close-file throw ;
773:
774: \ words that should be in minimal
775:
776: : + + ; : 1- 1- ;
777: : - - ; : 2* 2* ;
778: : dup dup ; : over over ;
779: : swap swap ; : rot rot ;
780:
781: \ include bug5.fs
782: \ only forth also minimal definitions
783:
784: : \ postpone \ ;
785: : ( postpone ( ;
786: : include bl word count included ;
787: : .( [char] ) parse type ;
788: : cr cr ;
789:
790: : times 0 ?DO dup T c, H LOOP drop ; \ used for space table creation
791: only forth also minimal definitions
792:
793: \ cross-compiler words
794:
795: : decimal decimal ;
796: : hex hex ;
797:
1.3 pazsan 798: : tudp T tudp H ;
799: : tup T tup H ; minimal
1.1 anton 800:
801: \ for debugging...
802: : order order ;
803: : words words ;
804: : .s .s ;
805:
806: : bye bye ;
807:
808: \ turnkey direction
809: : H forth ; immediate
810: : T minimal ; immediate
811: : G ghosts ; immediate
812:
813: : turnkey 0 set-order also Target definitions
814: also Minimal also ;
815:
816: \ these ones are pefered:
817:
818: : lock turnkey ;
819: : unlock forth also cross ;
820:
821: unlock definitions also minimal
822: : lock lock ;
823: lock
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