Annotation of gforth/cross.fs, revision 1.3
1.1 anton 1: \ CROSS.FS The Cross-Compiler 06oct92py
2: \ $Id: cross.fs,v 1.6 1993/11/08 18:10:48 pazsan Exp $
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:
26: decimal
27:
28: \ number? 11may93jaw
29:
30: \ checks for +, -, $, & ...
31: : leading? ( c-addr u -- c-addr u doubleflag negflag base )
32: 2dup 1- chars + c@ [char] . = \ process double
33: IF dup 1 chars = IF over 1 swap c! false ELSE 1 chars - true THEN
34: \ only if more than only . ( may be number output! )
35: \ if only . => store garbage
36: ELSE false THEN >r \ numbers
37: false -rot base @ -rot
38: BEGIN over c@
39: dup [char] - =
40: IF drop >r >r >r
41: drop true r> r> r> 0 THEN
42: dup [char] + =
43: IF drop 0 THEN
44: dup [char] $ =
45: IF drop >r >r drop 16 r> r> 0 THEN
46: dup [char] & =
47: IF drop >r >r drop 10 r> r> 0 THEN
48: 0= IF 1 chars - swap char+ swap false ELSE true THEN
49: over 0= or
50: UNTIL
51: rot >r rot r> r> -rot ;
52:
53: : number? ( c-addr -- n/d flag )
54: \ return -1 if cell 1 if double 0 if garbage
55: 0 swap 0 swap \ create double number
56: count leading?
57: base @ >r base !
58: >r >r
59: >number IF 2drop false r> r> 2drop
60: r> base ! EXIT THEN
61: drop r> r>
62: IF IF dnegate 1
63: ELSE drop negate -1 THEN
64: ELSE IF 1 ELSE drop -1 THEN
65: THEN r> base ! ;
66:
67:
68:
69: \ Begin CROSS COMPILER:
70:
71: \ GhostNames 9may93jaw
72: \ second name source to search trough list
73:
74: VARIABLE GhostNames
75: 0 GhostNames !
76: : GhostName ( -- addr )
77: here GhostNames @ , GhostNames ! here 0 ,
78: name count
79: \ 2dup type space
80: dup c, here over chars allot swap move align ;
81:
82: hex
83:
84:
85: Vocabulary Cross
86: Vocabulary Target
87: Vocabulary Ghosts
88: VOCABULARY Minimal
89: only Forth also Target also also
90: definitions Forth
91:
92: : T previous Cross also Target ; immediate
93: : G Ghosts ; immediate
94: : H previous Forth also Cross ; immediate
95:
96: forth definitions
97:
98: : T previous Cross also Target ; immediate
99: : G Ghosts ; immediate
100:
101: : >cross also Cross definitions previous ;
102: : >target also Target definitions previous ;
103: : >minimal also Minimal definitions previous ;
104:
105: H
106:
107: >CROSS
108:
109: \ Variables 06oct92py
110:
111: -1 Constant NIL
112: Variable image
113: Variable tlast NIL tlast ! \ Last name field
114: Variable tlastcfa \ Last code field
115: Variable tdoes \ Resolve does> calls
116: Variable bit$
117: Variable tdp
118: : there tdp @ ;
119:
120: \ Parameter for target systems 06oct92py
121:
122: include machine.fs
123:
124: >TARGET
125:
126: \ Byte ordering and cell size 06oct92py
127:
128: : cell+ cell + ;
129: : cells cell<< lshift ;
130: : chars ;
131:
132: >CROSS
133: : cell/ cell<< rshift ;
134: >TARGET
135: 20 CONSTANT bl
136: -1 Constant NIL
137: -2 Constant :docol
138: -3 Constant :docon
139: -4 Constant :dovar
1.3 ! pazsan 140: -5 Constant :douser
! 141: -6 Constant :dodoes
! 142: -7 Constant :doesjump
1.1 anton 143:
144: >CROSS
145:
146: endian 0 pad ! -1 pad c! pad @ 0<
147: = [IF] : bswap ; immediate
148: [ELSE] : bswap ( big / little -- little / big ) 0
149: cell 1- FOR bits/byte lshift over
150: [ 1 bits/byte lshift 1- ] Literal and or
151: swap bits/byte rshift swap NEXT nip ;
152: [THEN]
153:
154: \ Memory initialisation 05dec92py
155: \ Fixed bug in else part 11may93jaw
156:
157: [IFDEF] Memory \ Memory is a bigFORTH feature
158: Memory
159: : initmem ( var len -- )
160: 2dup swap handle! >r @ r> erase ;
161: Target
162: [ELSE]
163: : initmem ( var len -- )
164: tuck allocate abort" CROSS: No memory for target"
165: ( len var adr ) dup rot !
166: ( len adr ) swap erase ;
167: [THEN]
168:
169: \ MakeKernal 12dec92py
170:
171: >MINIMAL
172: : makekernal ( targetsize -- targetsize )
173: bit$ over 1- cell>bit rshift 1+ initmem
174: image over initmem tdp off ;
175:
176: >CROSS
177: \ Bit string manipulation 06oct92py
178: \ 9may93jaw
179: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
180: : bits ( n -- n ) chars Bittable + c@ ;
181:
182: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
183: : +bit ( addr n -- ) >bit over c@ or swap c! ;
184: : relon ( taddr -- ) bit$ @ swap cell/ +bit ;
185:
186: \ Target memory access 06oct92py
187:
188: : align+ ( taddr -- rest )
189: cell tuck 1- and - [ cell 1- ] Literal and ;
190:
191: >TARGET
192: : aligned ( taddr -- ta-addr ) dup align+ + ;
193: \ assumes cell alignment granularity (as GNU C)
194:
195: >CROSS
196: : >image ( taddr -- absaddr ) image @ + ;
197: >TARGET
198: : @ ( taddr -- w ) >image @ bswap ;
199: : ! ( w taddr -- ) >r bswap r> >image ! ;
200: : c@ ( taddr -- char ) >image c@ ;
201: : c! ( char taddr -- ) >image c! ;
202:
203: \ Target compilation primitives 06oct92py
204: \ included A! 16may93jaw
205:
206: : here ( -- there ) there ;
207: : allot ( n -- ) tdp +! ;
208: : , ( w -- ) T here H cell T allot ! H ;
209: : c, ( char -- ) T here 1 allot c! H ;
210: : align ( -- ) T here H align+ 0 ?DO bl T c, H LOOP ;
211:
212: : A! dup relon T ! H ;
213: : A, ( w -- ) T here H relon T , H ;
214:
215: >CROSS
216:
217: \ threading modell 13dec92py
218:
219: \ generic threading modell
220: : docol, ( -- ) :docol T A, 0 , H ;
221:
222: >TARGET
223: : >body ( cfa -- pfa ) T cell+ cell+ H ;
224: >CROSS
225:
1.3 ! pazsan 226: : dodoes, ( -- ) T :doesjump A, 0 , H ;
1.1 anton 227:
228: \ Ghost Builder 06oct92py
229:
230: \ <T T> new version with temp variable 10may93jaw
231:
232: VARIABLE VocTemp
233:
234: : <T get-current VocTemp ! also Ghosts definitions ;
235: : T> previous VocTemp @ set-current ;
236:
237: 4711 Constant <fwd> 4712 Constant <res>
238: 4713 Constant <imm>
239:
240: \ iForth makes only immediate directly after create
241: \ make atonce trick! ?
242:
243: Variable atonce atonce off
244:
245: : NoExec true ABORT" CROSS: Don't execute ghost" ;
246:
247: : GhostHeader <fwd> , 0 , ['] NoExec , ;
248:
249: : >magic ; : >link cell+ ; : >exec cell+ cell+ ;
250: : >end 3 cells + ;
251:
252: : Make-Ghost ( "name" -- ghost )
253: >in @ GhostName swap >in !
254: <T Create atonce @ IF immediate atonce off THEN
255: here tuck swap ! ghostheader T>
256: DOES> >exec @ execute ;
257:
258: \ ghost words 14oct92py
259: \ changed: 10may93py/jaw
260:
261: : gfind ( string -- ghost true/1 / string false )
262: \ searches for string in word-list ghosts
263: \ !! wouldn't it be simpler to just use search-wordlist ? ae
264: >r get-order 0 set-order also ghosts r> find >r >r
265: set-order r> r@ IF >body THEN r> ;
266:
267: VARIABLE Already
268:
269: : ghost ( "name" -- ghost )
270: Already off
271: >in @ name gfind IF Already on nip EXIT THEN
272: drop >in ! Make-Ghost ;
273:
274: \ resolve 14oct92py
275:
276: : resolve-loop ( ghost tcfa -- ghost tcfa )
277: >r dup >link @
278: BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
279:
280: \ exists 9may93jaw
281:
282: : exists ( ghost tcfa -- )
283: over GhostNames
284: BEGIN @ dup
285: WHILE 2dup cell+ @ =
286: UNTIL
287: nip 2 cells + count cr ." CROSS: Exists: " type 4 spaces
288: swap cell+ !
289: ELSE true ABORT" CROSS: Ghostnames inconsistent"
290: THEN ;
291:
292: : resolve ( ghost tcfa -- )
293: over >magic @ <fwd> <> IF exists EXIT THEN
294: resolve-loop over >link ! <res> swap >magic ! ;
295:
296: \ gexecute ghost, 01nov92py
297:
298: : do-forward ( ghost -- )
299: >link dup @ there rot ! T A, H ;
300: : do-resolve ( ghost -- )
301: >link @ T A, H ;
302:
303: : gexecute ( ghost -- ) dup @
304: <fwd> = IF do-forward ELSE do-resolve THEN ;
305: : ghost, ghost gexecute ;
306:
307: \ .unresolved 11may93jaw
308:
309: variable ResolveFlag
310:
311: \ ?touched 11may93jaw
312:
313: : ?touched ( ghost -- flag ) dup >magic @ <fwd> = swap >link @
314: 0 <> and ;
315:
316: : ?resolved ( ghostname -- )
317: dup cell+ @ ?touched
318: IF cell+ cell+ count cr type ResolveFlag on ELSE drop THEN ;
319:
320: >MINIMAL
321: : .unresolved ( -- )
322: ResolveFlag off cr ." Unresolved: "
323: Ghostnames
324: BEGIN @ dup
325: WHILE dup ?resolved
326: REPEAT drop ResolveFlag @ 0= IF ." Nothing!" THEN cr ;
327:
328: >CROSS
329: \ Header states 12dec92py
330:
331: : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
332:
333: VARIABLE ^imm
334:
335: >TARGET
336: : immediate 20 flag!
337: ^imm @ @ dup <imm> = ?EXIT
338: <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
339: <imm> ^imm @ ! ;
340: : restrict ;
341: >CROSS
342:
343: \ ALIAS2 ansforth conform alias 9may93jaw
344:
345: : ALIAS2 create here 0 , DOES> @ execute ;
346: \ usage:
347: \ ' alias2 bla !
348:
349: \ Target Header Creation 01nov92py
350:
351: : string, ( addr count -- )
352: dup T c, H bounds DO I c@ T c, H LOOP ;
353: : name, ( "name" -- ) name count string, T align H ;
354: : view, ( -- ) ( dummy ) ;
355:
356: VARIABLE CreateFlag CreateFlag off
357:
358: : (Theader ( "name" -- ghost ) T align H view,
359: tlast @ dup 0> IF T 1 cells - THEN A, H there tlast !
360: >in @ name, >in ! T here H tlastcfa !
361: CreateFlag @ IF
362: >in @ alias2 swap >in ! \ create alias in target
363: >in @ ghost swap >in !
364: swap also ghosts ' previous swap ! \ tick ghost and store in alias
365: CreateFlag off
366: ELSE ghost THEN
367: dup >magic ^imm ! \ a pointer for immediate
368: Already @ IF dup >end tdoes !
369: ELSE 0 tdoes ! THEN
370: 80 flag! ;
371:
372: VARIABLE ;Resolve 1 cells allot
373:
374: : Theader ( "name" -- ) (THeader there resolve 0 ;Resolve ! ;
375:
376: >TARGET
377: : Alias ( cfa -- ) \ name
378: (THeader over resolve T A, H 80 flag! ;
379: >CROSS
380:
381: \ Conditionals and Comments 11may93jaw
382:
383: : ;Cond
384: postpone ;
385: swap ! ; immediate
386:
387: : Cond: ( -- ) \ name {code } ;
388: atonce on
389: ghost
390: >exec
391: :NONAME ;
392:
393: : restrict? ( -- )
394: \ aborts on interprete state - ae
395: state @ 0= ABORT" CROSS: Restricted" ;
396:
397: : Comment ( -- )
398: >in @ atonce on ghost swap >in ! ' swap >exec ! ;
399:
400: Comment ( Comment \
401:
402: \ Predefined ghosts 12dec92py
403:
404: ghost 0= drop
405: ghost branch ghost ?branch 2drop
406: ghost (do) ghost (?do) 2drop
407: ghost (for) drop
408: ghost (loop) ghost (+loop) 2drop
409: ghost (next) drop
1.2 pazsan 410: ghost unloop ghost ;S 2drop
1.1 anton 411: ghost lit ghost (compile) ghost ! 2drop drop
412: ghost (;code) ghost noop 2drop
413: ghost (.") ghost (S") ghost (ABORT") 2drop drop
414:
415: \ compile 10may93jaw
416:
417: : compile ( -- ) \ name
418: restrict?
419: name gfind dup 0= ABORT" CROSS: Can't compile "
420: 0> ( immediate? )
421: IF >exec @ compile,
422: ELSE postpone literal postpone gexecute THEN ;
423: immediate
424:
425: >TARGET
426: : ' ( -- cfa ) name gfind 0= ABORT" CROSS: undefined "
427: dup >magic @ <fwd> = ABORT" CROSS: forward " >link @ ;
428:
429: Cond: ['] compile lit ghost gexecute ;Cond
430:
431: >CROSS
432: \ tLiteral 12dec92py
433:
434: : lit, ( n -- ) compile lit T , H ;
435: : alit, ( n -- ) compile lit T A, H ;
436:
437: >TARGET
438: Cond: Literal ( n -- ) restrict? lit, ;Cond
439: Cond: ALiteral ( n -- ) restrict? alit, ;Cond
440:
441: : Char ( "<char>" -- ) bl word char+ c@ ;
442: Cond: [Char] ( "<char>" -- ) restrict? Char lit, ;Cond
443:
444: >CROSS
445: \ Target compiling loop 12dec92py
446: \ ">tib trick thrown out 10may93jaw
447: \ number? defined at the top 11may93jaw
448:
449: \ compiled word might leave items on stack!
450: : tcom ( in name -- )
451: gfind ?dup IF 0> IF nip >exec @ execute
452: ELSE nip gexecute THEN EXIT THEN
453: number? dup IF 0> IF swap lit, THEN lit, drop
454: ELSE 2drop >in !
455: ghost gexecute THEN ;
456:
457: >TARGET
458: \ : ; DOES> 13dec92py
459: \ ] 9may93py/jaw
460:
461: : ] state on
462: BEGIN
463: BEGIN >in @ name
464: dup c@ 0= WHILE 2drop refill 0=
465: ABORT" CROSS: End of file while target compiling"
466: REPEAT
467: tcom
468: state @
469: 0=
470: UNTIL ;
471:
472: \ by the way: defining a second interpreter (a compiler-)loop
473: \ is not allowed if a system should be ans conform
474:
475: : : ( -- colon-sys ) \ Name
476: (THeader ;Resolve ! there ;Resolve cell+ !
477: docol, depth T ] H ;
478:
1.2 pazsan 479: Cond: EXIT ( -- ) restrict? compile ;S ;Cond
480:
1.1 anton 481: Cond: ; ( -- ) restrict?
482: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
483: ELSE true ABORT" CROSS: Stack empty" THEN
1.2 pazsan 484: compile ;S state off
1.1 anton 485: ;Resolve @
486: IF ;Resolve @ ;Resolve cell+ @ resolve THEN
487: ;Cond
488: Cond: [ restrict? state off ;Cond
489:
490: >CROSS
491: : !does :dodoes tlastcfa @ tuck T ! cell+ ! H ;
492:
493: >TARGET
494: Cond: DOES> restrict?
495: compile (;code) dodoes, tdoes @ ?dup IF @ T here H resolve THEN
496: ;Cond
497: : DOES> dodoes, T here H !does depth T ] H ;
498:
499: >CROSS
500: \ Creation 01nov92py
501:
502: \ Builder 11may93jaw
503:
504: : Builder ( Create do: "name" -- )
505: >in @ alias2 swap dup >in ! >r >r
506: Make-Ghost rot swap >exec ! ,
507: r> r> >in !
508: also ghosts ' previous swap !
509: DOES> dup >exec @ execute ;
510:
511: : gdoes, ( ghost -- ) >end @ dup >magic @ <fwd> <>
512: IF dup >link @ dup 0< IF T A, 0 , H drop EXIT THEN drop THEN
513: :dodoes T A, H gexecute ;
514:
515: : TCreate ( ghost -- )
516: CreateFlag on
517: Theader dup gdoes,
518: >end @ >exec @ execute ;
519:
520: : Build: ( -- [xt] [colon-sys] )
521: :noname postpone TCreate ;
522:
523: : gdoes> ( ghost -- addr flag )
524: state @ IF gexecute true EXIT THEN
525: cell+ @ T >body H false ;
526:
527: \ DO: ;DO 11may93jaw
528: \ changed to ?EXIT 10may93jaw
529:
530: : (does>) postpone does> ; immediate \ second level does>
531:
532: : DO: ( -- addr [xt] [colon-sys] )
533: here ghostheader
534: :noname
535: postpone (does>) postpone gdoes> postpone ?EXIT ;
536:
537: : ;DO ( addr [xt] [colon-sys] -- )
538: postpone ; ( S addr xt )
539: over >exec ! ; immediate
540:
541: : by ( -- addr ) \ Name
542: ghost >end @ ;
543:
544: >TARGET
545: \ Variables and Constants 05dec92py
546:
547: Build: ;
548: DO: ( ghost -- addr ) ;DO
549: Builder Create
550: by Create :dovar resolve
551:
552: Build: T 0 , H ;
553: by Create
554: Builder Variable
555:
556: Build: T 0 A, H ;
557: by Create
558: Builder AVariable
559:
1.3 ! pazsan 560: \ User variables 04may94py
! 561:
! 562: >CROSS
! 563: Variable tup 0 tup !
! 564: Variable tudp 0 tudp !
! 565: : u, ( n -- udp )
! 566: tup @ tudp @ + T ! H
! 567: tudp @ dup cell+ tudp ! ;
! 568: : au, ( n -- udp )
! 569: tup @ tudp @ + T A! H
! 570: tudp @ dup cell+ tudp ! ;
! 571: >TARGET
! 572:
! 573: Build: T 0 u, , H ;
! 574: DO: ( ghost -- up-addr ) T @ H tup @ + ;DO
1.1 anton 575: Builder User
1.3 ! pazsan 576: by User :douser resolve
1.1 anton 577:
1.3 ! pazsan 578: Build: T 0 u, , 0 u, drop H ;
! 579: by User
1.1 anton 580: Builder 2User
581:
1.3 ! pazsan 582: Build: T 0 au, , H ;
! 583: by User
1.1 anton 584: Builder AUser
585:
586: Build: ( n -- ) T , H ;
587: DO: ( ghost -- n ) T @ H ;DO
588: Builder Constant
589: by Constant :docon resolve
590:
591: Build: ( n -- ) T A, H ;
592: by Constant
593: Builder AConstant
594:
595: Build: T 0 , H ;
596: by Constant
597: Builder Value
598:
599: Build: ( -- ) compile noop ;
600: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
601: Builder Defer
602:
603: \ structural conditionals 17dec92py
604:
605: >CROSS
606: : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
607: : sys? ( sys -- sys ) dup 0= ?struc ;
608: : >mark ( -- sys ) T here 0 , H ;
609: : >resolve ( sys -- ) T here over - swap ! H ;
610: : <resolve ( sys -- ) T here - , H ;
611: >TARGET
612:
613: \ Structural Conditionals 12dec92py
614:
615: Cond: BUT restrict? sys? swap ;Cond
616: Cond: YET restrict? sys? dup ;Cond
617:
618: >CROSS
619: Variable tleavings
620: >TARGET
621:
622: Cond: DONE ( addr -- ) restrict? tleavings @
623: BEGIN 2dup u> 0= WHILE dup T @ H swap >resolve REPEAT
624: tleavings ! drop ;Cond
625:
626: >CROSS
627: : (leave T here H tleavings @ T , H tleavings ! ;
628: >TARGET
629:
630: Cond: LEAVE restrict? compile branch (leave ;Cond
631: Cond: ?LEAVE restrict? compile 0= compile ?branch (leave ;Cond
632:
633: \ Structural Conditionals 12dec92py
634:
635: Cond: AHEAD restrict? compile branch >mark ;Cond
636: Cond: IF restrict? compile ?branch >mark ;Cond
637: Cond: THEN restrict? sys? dup T @ H ?struc >resolve ;Cond
638: Cond: ELSE restrict? sys? compile AHEAD swap compile THEN ;Cond
639:
640: Cond: BEGIN restrict? T here H ;Cond
641: Cond: WHILE restrict? sys? compile IF swap ;Cond
642: Cond: AGAIN restrict? sys? compile branch <resolve ;Cond
643: Cond: UNTIL restrict? sys? compile ?branch <resolve ;Cond
644: Cond: REPEAT restrict? over 0= ?struc compile AGAIN compile THEN ;Cond
645:
646: \ Structural Conditionals 12dec92py
647:
648: Cond: DO restrict? compile (do) T here H ;Cond
649: Cond: ?DO restrict? compile (?do) (leave T here H ;Cond
650: Cond: FOR restrict? compile (for) T here H ;Cond
651:
652: >CROSS
653: : loop] dup <resolve cell - compile DONE compile unloop ;
654: >TARGET
655:
656: Cond: LOOP restrict? sys? compile (loop) loop] ;Cond
657: Cond: +LOOP restrict? sys? compile (+loop) loop] ;Cond
658: Cond: NEXT restrict? sys? compile (next) loop] ;Cond
659:
660: \ String words 23feb93py
661:
662: : ," [char] " parse string, T align H ;
663:
664: Cond: ." restrict? compile (.") T ," H ;Cond
665: Cond: S" restrict? compile (S") T ," H ;Cond
666: Cond: ABORT" restrict? compile (ABORT") T ," H ;Cond
667:
668: Cond: IS T ' >body H compile ALiteral compile ! ;Cond
669: : IS T ' >body ! H ;
670:
671: \ LINKED ERR" ENV" 2ENV" 18may93jaw
672:
673: \ linked list primitive
674: : linked T here over @ A, swap ! H ;
675:
676: : err" s" ErrLink linked" evaluate T , H
677: [char] " parse string, T align H ;
678:
679: : env" [char] " parse s" EnvLink linked" evaluate
680: string, T align , H ;
681:
682: : 2env" [char] " parse s" EnvLink linked" evaluate
683: here >r string, T align , , H
684: r> dup T c@ H 80 and swap T c! H ;
685:
686: \ compile must be last 22feb93py
687:
688: Cond: compile ( -- ) restrict? \ name
689: name gfind dup 0= ABORT" CROSS: Can't compile"
690: 0> IF gexecute
691: ELSE dup >magic @ <imm> =
692: IF gexecute
693: ELSE compile (compile) gexecute THEN THEN ;Cond
694:
695: Cond: postpone ( -- ) restrict? \ name
696: name gfind dup 0= ABORT" CROSS: Can't compile"
697: 0> IF gexecute
698: ELSE dup >magic @ <imm> =
699: IF gexecute
700: ELSE compile (compile) gexecute THEN THEN ;Cond
701:
702: >MINIMAL
703: also minimal
704: \ Usefull words 13feb93py
705:
706: : KB 400 * ;
707:
708: \ define new [IFDEF] and [IFUNDEF] 20may93jaw
709:
710: : there? name gfind IF >magic @ <fwd> <> ELSE drop false THEN ;
711:
712: : [IFDEF] there? postpone [IF] ;
713: : [IFUNDEF] there? 0= postpone [IF] ;
714:
715: \ C: \- \+ Conditional Compiling 09jun93jaw
716:
717: : C: >in @ there? 0=
718: IF >in ! T : H
719: ELSE drop
720: BEGIN bl word dup c@
721: IF count comment? s" ;" compare 0= ?EXIT
722: ELSE refill 0= ABORT" CROSS: Out of Input while C:"
723: THEN
724: AGAIN
725: THEN ;
726:
727: also minimal
728:
729: : \- there? IF postpone \ THEN ;
730: : \+ there? 0= IF postpone \ THEN ;
731:
732: : [IF] postpone [IF] ;
733: : [THEN] postpone [THEN] ;
734: : [ELSE] postpone [ELSE] ;
735:
736: Cond: [IF] [IF] ;Cond
737: Cond: [IFDEF] [IFDEF] ;Cond
738: Cond: [IFUNDEF] [IFUNDEF] ;Cond
739: Cond: [THEN] [THEN] ;Cond
740: Cond: [ELSE] [ELSE] ;Cond
741:
742: \ save-cross 17mar93py
743:
744: \ i'm not interested in bigforth features this time 10may93jaw
745: \ [IFDEF] file
746: \ also file
747: \ [THEN]
748: \ included throw after create-file 11may93jaw
749:
750: endian Constant endian
751:
752: : save-cross ( "name" -- )
753: bl parse ." Saving to " 2dup type
754: w/o bin create-file throw >r
755: image @ there r@ write-file throw
756: bit$ @ there 1- cell>bit rshift 1+ r@ write-file throw
757: r> close-file throw ;
758:
759: \ words that should be in minimal
760:
761: : + + ; : 1- 1- ;
762: : - - ; : 2* 2* ;
763: : dup dup ; : over over ;
764: : swap swap ; : rot rot ;
765:
766: \ include bug5.fs
767: \ only forth also minimal definitions
768:
769: : \ postpone \ ;
770: : ( postpone ( ;
771: : include bl word count included ;
772: : .( [char] ) parse type ;
773: : cr cr ;
774:
775: : times 0 ?DO dup T c, H LOOP drop ; \ used for space table creation
776: only forth also minimal definitions
777:
778: \ cross-compiler words
779:
780: : decimal decimal ;
781: : hex hex ;
782:
1.3 ! pazsan 783: : tudp T tudp H ;
! 784: : tup T tup H ; minimal
1.1 anton 785:
786: \ for debugging...
787: : order order ;
788: : words words ;
789: : .s .s ;
790:
791: : bye bye ;
792:
793: \ turnkey direction
794: : H forth ; immediate
795: : T minimal ; immediate
796: : G ghosts ; immediate
797:
798: : turnkey 0 set-order also Target definitions
799: also Minimal also ;
800:
801: \ these ones are pefered:
802:
803: : lock turnkey ;
804: : unlock forth also cross ;
805:
806: unlock definitions also minimal
807: : lock lock ;
808: lock
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