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cross.fs
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Thu Feb 2 18:13:02 1995 UTC (29 years, 2 months ago) by
pazsan
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added very preliminary support for Alpha/osf1
Moved flush-tos before stores to improve scheduling
merged io-dos.h and io.h
Created new Makefile for DOS
removed ToDo topcics that are already done
1: \ CROSS.FS The Cross-Compiler 06oct92py
2: \ $Id: cross.fs,v 1.21 1995/02/02 18:13:02 pazsan Exp $
3: \ Idea and implementation: Bernd Paysan (py)
4: \ Copyright 1992-94 by the GNU Forth 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: : 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:
32: decimal
33:
34: \ Begin CROSS COMPILER:
35:
36: \ GhostNames 9may93jaw
37: \ second name source to search trough list
38:
39: VARIABLE GhostNames
40: 0 GhostNames !
41: : GhostName ( -- addr )
42: here GhostNames @ , GhostNames ! here 0 ,
43: bl word count
44: \ 2dup type space
45: dup c, here over chars allot swap move align ;
46:
47: hex
48:
49:
50: Vocabulary Cross
51: Vocabulary Target
52: Vocabulary Ghosts
53: VOCABULARY Minimal
54: only Forth also Target also also
55: definitions Forth
56:
57: : T previous Cross also Target ; immediate
58: : G Ghosts ; immediate
59: : H previous Forth also Cross ; immediate
60:
61: forth definitions
62:
63: : T previous Cross also Target ; immediate
64: : G Ghosts ; immediate
65:
66: : >cross also Cross definitions previous ;
67: : >target also Target definitions previous ;
68: : >minimal also Minimal definitions previous ;
69:
70: H
71:
72: >CROSS
73:
74: \ Variables 06oct92py
75:
76: -1 Constant NIL
77: Variable image
78: Variable tlast NIL tlast ! \ Last name field
79: Variable tlastcfa \ Last code field
80: Variable tdoes \ Resolve does> calls
81: Variable bit$
82: Variable tdp
83: : there tdp @ ;
84:
85: \ Parameter for target systems 06oct92py
86:
87: included
88:
89: \ Create additional parameters 19jan95py
90:
91: T
92: cell Constant tcell
93: cell<< Constant tcell<<
94: cell>bit Constant tcell>bit
95: bits/byte Constant tbits/byte
96: float Constant tfloat
97: 1 bits/byte lshift Constant maxbyte
98: H
99:
100: >TARGET
101:
102: \ Byte ordering and cell size 06oct92py
103:
104: : cell+ tcell + ;
105: : cells tcell<< lshift ;
106: : chars ;
107: : floats tfloat * ;
108:
109: >CROSS
110: : cell/ tcell<< rshift ;
111: >TARGET
112: 20 CONSTANT bl
113: -1 Constant NIL
114: -2 Constant :docol
115: -3 Constant :docon
116: -4 Constant :dovar
117: -5 Constant :douser
118: -6 Constant :dodefer
119: -7 Constant :dodoes
120: -8 Constant :doesjump
121:
122: >CROSS
123:
124: bigendian
125: [IF]
126: : T! ( n addr -- ) >r s>d r> tcell bounds swap 1-
127: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
128: : T@ ( addr -- n ) >r 0 0 r> tcell bounds
129: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ;
130: [ELSE]
131: : T! ( n addr -- ) >r s>d r> tcell bounds
132: DO maxbyte ud/mod rot I c! LOOP 2drop ;
133: : T@ ( addr -- n ) >r 0 0 r> tcell bounds swap 1-
134: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ;
135: [THEN]
136:
137: \ Memory initialisation 05dec92py
138: \ Fixed bug in else part 11may93jaw
139:
140: [IFDEF] Memory \ Memory is a bigFORTH feature
141: also Memory
142: : initmem ( var len -- )
143: 2dup swap handle! >r @ r> erase ;
144: toss
145: [ELSE]
146: : initmem ( var len -- )
147: tuck allocate abort" CROSS: No memory for target"
148: ( len var adr ) dup rot !
149: ( len adr ) swap erase ;
150: [THEN]
151:
152: \ MakeKernal 12dec92py
153:
154: >MINIMAL
155: : makekernal ( targetsize -- targetsize )
156: bit$ over 1- cell>bit rshift 1+ initmem
157: image over initmem tdp off ;
158:
159: >CROSS
160: \ Bit string manipulation 06oct92py
161: \ 9may93jaw
162: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
163: : bits ( n -- n ) chars Bittable + c@ ;
164:
165: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
166: : +bit ( addr n -- ) >bit over c@ or swap c! ;
167: : -bit ( addr n -- ) >bit invert over c@ and swap c! ;
168: : relon ( taddr -- ) bit$ @ swap cell/ +bit ;
169: : reloff ( taddr -- ) bit$ @ swap cell/ -bit ;
170:
171: \ Target memory access 06oct92py
172:
173: : align+ ( taddr -- rest )
174: cell tuck 1- and - [ cell 1- ] Literal and ;
175:
176: >TARGET
177: : aligned ( taddr -- ta-addr ) dup align+ + ;
178: \ assumes cell alignment granularity (as GNU C)
179:
180: >CROSS
181: : >image ( taddr -- absaddr ) image @ + ;
182: >TARGET
183: : @ ( taddr -- w ) >image t@ ;
184: : ! ( w taddr -- ) >image t! ;
185: : c@ ( taddr -- char ) >image c@ ;
186: : c! ( char taddr -- ) >image c! ;
187: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
188: : 2! ( x1 x2 taddr -- ) T swap over ! cell+ ! H ;
189:
190: \ Target compilation primitives 06oct92py
191: \ included A! 16may93jaw
192:
193: : here ( -- there ) there ;
194: : allot ( n -- ) tdp +! ;
195: : , ( w -- ) T here H cell T allot ! H ;
196: : c, ( char -- ) T here 1 allot c! H ;
197: : align ( -- ) T here H align+ 0 ?DO bl T c, H LOOP ;
198:
199: : A! dup relon T ! H ;
200: : A, ( w -- ) T here H relon T , H ;
201:
202: >CROSS
203:
204: \ threading modell 13dec92py
205:
206: \ generic threading modell
207: : docol, ( -- ) :docol T A, 0 , H ;
208:
209: >TARGET
210: : >body ( cfa -- pfa ) T cell+ cell+ H ;
211: >CROSS
212:
213: : dodoes, ( -- ) T :doesjump A, 0 , H ;
214:
215: \ Ghost Builder 06oct92py
216:
217: \ <T T> new version with temp variable 10may93jaw
218:
219: VARIABLE VocTemp
220:
221: : <T get-current VocTemp ! also Ghosts definitions ;
222: : T> previous VocTemp @ set-current ;
223:
224: 4711 Constant <fwd> 4712 Constant <res>
225: 4713 Constant <imm>
226:
227: \ iForth makes only immediate directly after create
228: \ make atonce trick! ?
229:
230: Variable atonce atonce off
231:
232: : NoExec true ABORT" CROSS: Don't execute ghost" ;
233:
234: : GhostHeader <fwd> , 0 , ['] NoExec , ;
235:
236: : >magic ; : >link cell+ ; : >exec cell+ cell+ ;
237: : >end 3 cells + ;
238:
239: Variable last-ghost
240: : Make-Ghost ( "name" -- ghost )
241: >in @ GhostName swap >in !
242: <T Create atonce @ IF immediate atonce off THEN
243: here tuck swap ! ghostheader T>
244: DOES> dup last-ghost ! >exec @ execute ;
245:
246: \ ghost words 14oct92py
247: \ changed: 10may93py/jaw
248:
249: : gfind ( string -- ghost true/1 / string false )
250: \ searches for string in word-list ghosts
251: \ !! wouldn't it be simpler to just use search-wordlist ? ae
252: dup count [ ' ghosts >body ] ALiteral search-wordlist
253: dup IF >r >body nip r> THEN ;
254:
255: VARIABLE Already
256:
257: : ghost ( "name" -- ghost )
258: Already off
259: >in @ bl word gfind IF Already on nip EXIT THEN
260: drop >in ! Make-Ghost ;
261:
262: \ resolve 14oct92py
263:
264: : resolve-loop ( ghost tcfa -- ghost tcfa )
265: >r dup >link @
266: BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
267:
268: \ exists 9may93jaw
269:
270: : exists ( ghost tcfa -- )
271: over GhostNames
272: BEGIN @ dup
273: WHILE 2dup cell+ @ =
274: UNTIL
275: 2 cells + count cr ." CROSS: Exists: " type 4 spaces drop
276: swap cell+ !
277: ELSE true ABORT" CROSS: Ghostnames inconsistent"
278: THEN ;
279:
280: : resolve ( ghost tcfa -- )
281: over >magic @ <fwd> <> IF exists EXIT THEN
282: resolve-loop over >link ! <res> swap >magic ! ;
283:
284: \ gexecute ghost, 01nov92py
285:
286: : do-forward ( ghost -- )
287: >link dup @ there rot ! T A, H ;
288: : do-resolve ( ghost -- )
289: >link @ T A, H ;
290:
291: : gexecute ( ghost -- ) dup @
292: <fwd> = IF do-forward ELSE do-resolve THEN ;
293: : ghost, ghost gexecute ;
294:
295: \ .unresolved 11may93jaw
296:
297: variable ResolveFlag
298:
299: \ ?touched 11may93jaw
300:
301: : ?touched ( ghost -- flag ) dup >magic @ <fwd> = swap >link @
302: 0 <> and ;
303:
304: : ?resolved ( ghostname -- )
305: dup cell+ @ ?touched
306: IF cell+ cell+ count cr type ResolveFlag on ELSE drop THEN ;
307:
308: >MINIMAL
309: : .unresolved ( -- )
310: ResolveFlag off cr ." Unresolved: "
311: Ghostnames
312: BEGIN @ dup
313: WHILE dup ?resolved
314: REPEAT drop ResolveFlag @
315: IF
316: abort" Unresolved words!"
317: ELSE
318: ." Nothing!"
319: THEN
320: cr ;
321:
322: >CROSS
323: \ Header states 12dec92py
324:
325: : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
326:
327: VARIABLE ^imm
328:
329: >TARGET
330: : immediate 20 flag!
331: ^imm @ @ dup <imm> = IF drop EXIT THEN
332: <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
333: <imm> ^imm @ ! ;
334: : restrict 40 flag! ;
335: >CROSS
336:
337: \ ALIAS2 ansforth conform alias 9may93jaw
338:
339: : ALIAS2 create here 0 , DOES> @ execute ;
340: \ usage:
341: \ ' <name> alias2 bla !
342:
343: \ Target Header Creation 01nov92py
344:
345: : string, ( addr count -- )
346: dup T c, H bounds DO I c@ T c, H LOOP ;
347: : name, ( "name" -- ) bl word count string, T align H ;
348: : view, ( -- ) ( dummy ) ;
349:
350: VARIABLE CreateFlag CreateFlag off
351:
352: : (Theader ( "name" -- ghost ) T align H view,
353: tlast @ dup 0> IF T 1 cells - THEN A, H there tlast !
354: >in @ name, >in ! T here H tlastcfa !
355: CreateFlag @ IF
356: >in @ alias2 swap >in ! \ create alias in target
357: >in @ ghost swap >in !
358: swap also ghosts ' previous swap ! \ tick ghost and store in alias
359: CreateFlag off
360: ELSE ghost THEN
361: dup >magic ^imm ! \ a pointer for immediate
362: Already @ IF dup >end tdoes !
363: ELSE 0 tdoes ! THEN
364: 80 flag! ;
365:
366: VARIABLE ;Resolve 1 cells allot
367:
368: : Theader ( "name" -- ghost )
369: (THeader dup there resolve 0 ;Resolve ! ;
370:
371: >TARGET
372: : Alias ( cfa -- ) \ name
373: (THeader over resolve T A, H 80 flag! ;
374: >CROSS
375:
376: \ Conditionals and Comments 11may93jaw
377:
378: : ;Cond
379: postpone ;
380: swap ! ; immediate
381:
382: : Cond: ( -- ) \ name {code } ;
383: atonce on
384: ghost
385: >exec
386: :NONAME ;
387:
388: : restrict? ( -- )
389: \ aborts on interprete state - ae
390: state @ 0= ABORT" CROSS: Restricted" ;
391:
392: : Comment ( -- )
393: >in @ atonce on ghost swap >in ! ' swap >exec ! ;
394:
395: Comment ( Comment \
396:
397: \ Predefined ghosts 12dec92py
398:
399: ghost 0= drop
400: ghost branch ghost ?branch 2drop
401: ghost (do) ghost (?do) 2drop
402: ghost (for) drop
403: ghost (loop) ghost (+loop) 2drop
404: ghost (next) drop
405: ghost unloop ghost ;S 2drop
406: ghost lit ghost (compile) ghost ! 2drop drop
407: ghost (;code) ghost noop 2drop
408: ghost (.") ghost (S") ghost (ABORT") 2drop drop
409: ghost '
410:
411: \ compile 10may93jaw
412:
413: : compile ( -- ) \ name
414: restrict?
415: bl word gfind dup 0= ABORT" CROSS: Can't compile "
416: 0> ( immediate? )
417: IF >exec @ compile,
418: ELSE postpone literal postpone gexecute THEN ;
419: immediate
420:
421: >TARGET
422: : ' ( -- cfa ) bl word gfind 0= ABORT" CROSS: undefined "
423: dup >magic @ <fwd> = ABORT" CROSS: forward " >link @ ;
424:
425: Cond: ['] compile lit ghost gexecute ;Cond
426:
427: Cond: chars ;Cond
428:
429: >CROSS
430: \ tLiteral 12dec92py
431:
432: : lit, ( n -- ) compile lit T , H ;
433: : alit, ( n -- ) compile lit T A, H ;
434:
435: >TARGET
436: Cond: Literal ( n -- ) restrict? lit, ;Cond
437: Cond: ALiteral ( n -- ) restrict? alit, ;Cond
438:
439: : Char ( "<char>" -- ) bl word char+ c@ ;
440: Cond: [Char] ( "<char>" -- ) restrict? Char lit, ;Cond
441:
442: >CROSS
443: \ Target compiling loop 12dec92py
444: \ ">tib trick thrown out 10may93jaw
445: \ number? defined at the top 11may93jaw
446:
447: \ compiled word might leave items on stack!
448: : tcom ( in name -- )
449: gfind ?dup IF 0> IF nip >exec @ execute
450: ELSE nip gexecute THEN EXIT THEN
451: number? dup IF 0> IF swap lit, THEN lit, drop
452: ELSE 2drop >in !
453: ghost gexecute THEN ;
454:
455: >TARGET
456: \ : ; DOES> 13dec92py
457: \ ] 9may93py/jaw
458:
459: : ] state on
460: BEGIN
461: BEGIN >in @ bl word
462: dup c@ 0= WHILE 2drop refill 0=
463: ABORT" CROSS: End of file while target compiling"
464: REPEAT
465: tcom
466: state @
467: 0=
468: UNTIL ;
469:
470: \ by the way: defining a second interpreter (a compiler-)loop
471: \ is not allowed if a system should be ans conform
472:
473: : : ( -- colon-sys ) \ Name
474: (THeader ;Resolve ! there ;Resolve cell+ !
475: docol, depth T ] H ;
476:
477: Cond: EXIT ( -- ) restrict? compile ;S ;Cond
478:
479: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
480:
481: Cond: ; ( -- ) restrict?
482: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
483: ELSE true ABORT" CROSS: Stack empty" THEN
484: compile ;S state off
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 T here H cell - reloff ;
514:
515: : TCreate ( -- )
516: last-ghost @
517: CreateFlag on
518: Theader >r dup gdoes,
519: >end @ >exec @ r> >exec ! ;
520:
521: : Build: ( -- [xt] [colon-sys] )
522: :noname postpone TCreate ;
523:
524: : gdoes> ( ghost -- addr flag )
525: last-ghost @
526: state @ IF gexecute true EXIT THEN
527: cell+ @ T >body H false ;
528:
529: \ DO: ;DO 11may93jaw
530: \ changed to ?EXIT 10may93jaw
531:
532: : DO: ( -- addr [xt] [colon-sys] )
533: here ghostheader
534: :noname postpone gdoes> postpone ?EXIT ;
535:
536: : ;DO ( addr [xt] [colon-sys] -- )
537: postpone ; ( S addr xt )
538: over >exec ! ; immediate
539:
540: : by ( -- addr ) \ Name
541: ghost >end @ ;
542:
543: >TARGET
544: \ Variables and Constants 05dec92py
545:
546: Build: ;
547: DO: ( ghost -- addr ) ;DO
548: Builder Create
549: by Create :dovar resolve
550:
551: Build: T 0 , H ;
552: by Create
553: Builder Variable
554:
555: Build: T 0 A, H ;
556: by Create
557: Builder AVariable
558:
559: \ User variables 04may94py
560:
561: >CROSS
562: Variable tup 0 tup !
563: Variable tudp 0 tudp !
564: : u, ( n -- udp )
565: tup @ tudp @ + T ! H
566: tudp @ dup T cell+ H tudp ! ;
567: : au, ( n -- udp )
568: tup @ tudp @ + T A! H
569: tudp @ dup T cell+ H tudp ! ;
570: >TARGET
571:
572: Build: T 0 u, , H ;
573: DO: ( ghost -- up-addr ) T @ H tup @ + ;DO
574: Builder User
575: by User :douser resolve
576:
577: Build: T 0 u, , 0 u, drop H ;
578: by User
579: Builder 2User
580:
581: Build: T 0 au, , H ;
582: by User
583: Builder AUser
584:
585: Build: ( n -- ) T , H ;
586: DO: ( ghost -- n ) T @ H ;DO
587: Builder Constant
588: by Constant :docon resolve
589:
590: Build: ( n -- ) T A, H ;
591: by Constant
592: Builder AConstant
593:
594: Build: T 0 , H ;
595: by Constant
596: Builder Value
597:
598: Build: ( -- ) compile noop ;
599: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
600: Builder Defer
601: by Defer :dodefer resolve
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: Cond: TO T ' >body H compile ALiteral compile ! ;Cond
671: : TO T ' >body ! H ;
672:
673: \ LINKED ERR" ENV" 2ENV" 18may93jaw
674:
675: \ linked list primitive
676: : linked T here over @ A, swap ! H ;
677:
678: : err" s" ErrLink linked" evaluate T , H
679: [char] " parse string, T align H ;
680:
681: : env" [char] " parse s" EnvLink linked" evaluate
682: string, T align , H ;
683:
684: : 2env" [char] " parse s" EnvLink linked" evaluate
685: here >r string, T align , , H
686: r> dup T c@ H 80 and swap T c! H ;
687:
688: \ compile must be last 22feb93py
689:
690: Cond: compile ( -- ) restrict? \ name
691: bl word gfind dup 0= ABORT" CROSS: Can't compile"
692: 0> IF gexecute
693: ELSE dup >magic @ <imm> =
694: IF gexecute
695: ELSE compile (compile) gexecute THEN THEN ;Cond
696:
697: Cond: postpone ( -- ) restrict? \ name
698: bl word gfind dup 0= ABORT" CROSS: Can't compile"
699: 0> IF gexecute
700: ELSE dup >magic @ <imm> =
701: IF gexecute
702: ELSE compile (compile) gexecute THEN THEN ;Cond
703:
704: >MINIMAL
705: also minimal
706: \ Usefull words 13feb93py
707:
708: : KB 400 * ;
709:
710: \ define new [IFDEF] and [IFUNDEF] 20may93jaw
711:
712: : there? bl word gfind IF >magic @ <fwd> <> ELSE drop false THEN ;
713:
714: : [IFDEF] there? postpone [IF] ;
715: : [IFUNDEF] there? 0= postpone [IF] ;
716:
717: \ C: \- \+ Conditional Compiling 09jun93jaw
718:
719: : C: >in @ there? 0=
720: IF >in ! T : H
721: ELSE drop
722: BEGIN bl word dup c@
723: IF count comment? s" ;" compare 0= ?EXIT
724: ELSE refill 0= ABORT" CROSS: Out of Input while C:"
725: THEN
726: AGAIN
727: THEN ;
728:
729: also minimal
730:
731: : \- there? IF postpone \ THEN ;
732: : \+ there? 0= IF postpone \ THEN ;
733:
734: : [IF] postpone [IF] ;
735: : [THEN] postpone [THEN] ;
736: : [ELSE] postpone [ELSE] ;
737:
738: Cond: [IF] [IF] ;Cond
739: Cond: [IFDEF] [IFDEF] ;Cond
740: Cond: [IFUNDEF] [IFUNDEF] ;Cond
741: Cond: [THEN] [THEN] ;Cond
742: Cond: [ELSE] [ELSE] ;Cond
743:
744: \ save-cross 17mar93py
745:
746: \ i'm not interested in bigforth features this time 10may93jaw
747: \ [IFDEF] file
748: \ also file
749: \ [THEN]
750: \ included throw after create-file 11may93jaw
751:
752: bigendian Constant bigendian
753:
754: : save-cross ( "name" -- )
755: bl parse ." Saving to " 2dup type
756: w/o bin create-file throw >r
757: s" gforth00" r@ write-file throw \ write magic
758: image @ there r@ write-file throw \ write image
759: bit$ @ there 1- cell>bit rshift 1+
760: r@ write-file throw \ write tags
761: r> close-file throw ;
762:
763: \ words that should be in minimal
764:
765: : + + ; : 1- 1- ;
766: : - - ; : 2* 2* ;
767: : * * ; : / / ;
768: : dup dup ; : over over ;
769: : swap swap ; : rot rot ;
770: : drop drop ; : = = ;
771: : lshift lshift ; : 2/ 2/ ;
772: : . . ;
773: cell constant cell
774:
775: \ include bug5.fs
776: \ only forth also minimal definitions
777:
778: : \ postpone \ ;
779: : ( postpone ( ;
780: : include bl word count included ;
781: : .( [char] ) parse type ;
782: : cr cr ;
783:
784: : times 0 ?DO dup T c, H LOOP drop ; \ used for space table creation
785: only forth also minimal definitions
786:
787: \ cross-compiler words
788:
789: : decimal decimal ;
790: : hex hex ;
791:
792: : tudp T tudp H ;
793: : tup T tup H ; minimal
794:
795: \ for debugging...
796: : order order ;
797: : words words ;
798: : .s .s ;
799:
800: : bye bye ;
801:
802: \ turnkey direction
803: : H forth ; immediate
804: : T minimal ; immediate
805: : G ghosts ; immediate
806:
807: : turnkey 0 set-order also Target definitions
808: also Minimal also ;
809:
810: \ these ones are pefered:
811:
812: : lock turnkey ;
813: : unlock forth also cross ;
814:
815: unlock definitions also minimal
816: : lock lock ;
817: lock
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