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