Annotation of gforth/cross.fs, revision 1.34
1.1 anton 1: \ CROSS.FS The Cross-Compiler 06oct92py
2: \ Idea and implementation: Bernd Paysan (py)
1.30 anton 3:
4: \ Copyright (C) 1995 Free Software Foundation, Inc.
5:
6: \ This file is part of Gforth.
7:
8: \ Gforth is free software; you can redistribute it and/or
9: \ modify it under the terms of the GNU General Public License
10: \ as published by the Free Software Foundation; either version 2
11: \ of the License, or (at your option) any later version.
12:
13: \ This program is distributed in the hope that it will be useful,
14: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
15: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: \ GNU General Public License for more details.
17:
18: \ You should have received a copy of the GNU General Public License
19: \ along with this program; if not, write to the Free Software
20: \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
1.1 anton 21:
22: \ Log:
23: \ changed in ; [ to state off 12may93jaw
24: \ included place +place 12may93jaw
25: \ for a created word (variable, constant...)
26: \ is now an alias in the target voabulary.
27: \ this means it is no longer necessary to
28: \ switch between vocabularies for variable
29: \ initialization 12may93jaw
30: \ discovered error in DOES>
31: \ replaced !does with (;code) 16may93jaw
32: \ made complete redesign and
33: \ introduced two vocs method
34: \ to be asure that the right words
35: \ are found 08jun93jaw
36: \ btw: ! works not with 16 bit
37: \ targets 09jun93jaw
38: \ added: 2user and value 11jun93jaw
39:
1.9 pazsan 40: \ include other.fs \ ansforth extentions for cross
1.1 anton 41:
1.23 pazsan 42: : string, ( c-addr u -- )
43: \ puts down string as cstring
44: dup c, here swap chars dup allot move ;
45: ' falign Alias cfalign
1.5 pazsan 46: : comment? ( c-addr u -- c-addr u )
47: 2dup s" (" compare 0=
48: IF postpone (
49: ELSE 2dup s" \" compare 0= IF postpone \ THEN
50: THEN ;
51:
1.1 anton 52: decimal
53:
54: \ Begin CROSS COMPILER:
55:
56: \ GhostNames 9may93jaw
57: \ second name source to search trough list
58:
59: VARIABLE GhostNames
60: 0 GhostNames !
61: : GhostName ( -- addr )
1.22 anton 62: here GhostNames @ , GhostNames ! here 0 ,
63: bl word count
64: \ 2dup type space
65: string, cfalign ;
1.1 anton 66:
67: hex
68:
69:
70: Vocabulary Cross
71: Vocabulary Target
72: Vocabulary Ghosts
73: VOCABULARY Minimal
74: only Forth also Target also also
75: definitions Forth
76:
77: : T previous Cross also Target ; immediate
78: : G Ghosts ; immediate
79: : H previous Forth also Cross ; immediate
80:
81: forth definitions
82:
83: : T previous Cross also Target ; immediate
84: : G Ghosts ; immediate
85:
86: : >cross also Cross definitions previous ;
87: : >target also Target definitions previous ;
88: : >minimal also Minimal definitions previous ;
89:
90: H
91:
92: >CROSS
93:
94: \ Variables 06oct92py
95:
96: -1 Constant NIL
97: Variable image
98: Variable tlast NIL tlast ! \ Last name field
99: Variable tlastcfa \ Last code field
100: Variable tdoes \ Resolve does> calls
101: Variable bit$
102: Variable tdp
103: : there tdp @ ;
104:
105: \ Parameter for target systems 06oct92py
106:
1.13 pazsan 107: included
1.1 anton 108:
1.19 pazsan 109: \ Create additional parameters 19jan95py
110:
111: T
112: cell Constant tcell
113: cell<< Constant tcell<<
114: cell>bit Constant tcell>bit
115: bits/byte Constant tbits/byte
116: float Constant tfloat
117: 1 bits/byte lshift Constant maxbyte
118: H
119:
1.1 anton 120: >TARGET
121:
122: \ Byte ordering and cell size 06oct92py
123:
1.19 pazsan 124: : cell+ tcell + ;
125: : cells tcell<< lshift ;
1.1 anton 126: : chars ;
1.19 pazsan 127: : floats tfloat * ;
1.6 anton 128:
1.1 anton 129: >CROSS
1.19 pazsan 130: : cell/ tcell<< rshift ;
1.1 anton 131: >TARGET
132: 20 CONSTANT bl
133: -1 Constant NIL
134: -2 Constant :docol
135: -3 Constant :docon
136: -4 Constant :dovar
1.3 pazsan 137: -5 Constant :douser
1.10 anton 138: -6 Constant :dodefer
1.29 anton 139: -7 Constant :dofield
1.24 pazsan 140: -8 Constant :dodoes
141: -9 Constant :doesjump
1.1 anton 142:
143: >CROSS
144:
1.20 pazsan 145: bigendian
146: [IF]
147: : T! ( n addr -- ) >r s>d r> tcell bounds swap 1-
148: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
149: : T@ ( addr -- n ) >r 0 0 r> tcell bounds
150: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ;
1.19 pazsan 151: [ELSE]
1.20 pazsan 152: : T! ( n addr -- ) >r s>d r> tcell bounds
153: DO maxbyte ud/mod rot I c! LOOP 2drop ;
154: : T@ ( addr -- n ) >r 0 0 r> tcell bounds swap 1-
155: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ;
1.1 anton 156: [THEN]
157:
158: \ Memory initialisation 05dec92py
159: \ Fixed bug in else part 11may93jaw
160:
161: [IFDEF] Memory \ Memory is a bigFORTH feature
1.5 pazsan 162: also Memory
1.1 anton 163: : initmem ( var len -- )
164: 2dup swap handle! >r @ r> erase ;
1.5 pazsan 165: toss
1.1 anton 166: [ELSE]
167: : initmem ( var len -- )
168: tuck allocate abort" CROSS: No memory for target"
169: ( len var adr ) dup rot !
170: ( len adr ) swap erase ;
171: [THEN]
172:
173: \ MakeKernal 12dec92py
174:
175: >MINIMAL
176: : makekernal ( targetsize -- targetsize )
177: bit$ over 1- cell>bit rshift 1+ initmem
178: image over initmem tdp off ;
179:
180: >CROSS
181: \ Bit string manipulation 06oct92py
182: \ 9may93jaw
183: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
184: : bits ( n -- n ) chars Bittable + c@ ;
185:
186: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
187: : +bit ( addr n -- ) >bit over c@ or swap c! ;
1.4 pazsan 188: : -bit ( addr n -- ) >bit invert over c@ and swap c! ;
1.1 anton 189: : relon ( taddr -- ) bit$ @ swap cell/ +bit ;
1.4 pazsan 190: : reloff ( taddr -- ) bit$ @ swap cell/ -bit ;
1.1 anton 191:
192: \ Target memory access 06oct92py
193:
194: : align+ ( taddr -- rest )
195: cell tuck 1- and - [ cell 1- ] Literal and ;
1.22 anton 196: : cfalign+ ( taddr -- rest )
197: \ see kernal.fs:cfaligned
198: float tuck 1- and - [ float 1- ] Literal and ;
1.1 anton 199:
200: >TARGET
201: : aligned ( taddr -- ta-addr ) dup align+ + ;
202: \ assumes cell alignment granularity (as GNU C)
203:
1.22 anton 204: : cfaligned ( taddr1 -- taddr2 )
205: \ see kernal.fs
206: dup cfalign+ + ;
207:
1.1 anton 208: >CROSS
209: : >image ( taddr -- absaddr ) image @ + ;
210: >TARGET
1.19 pazsan 211: : @ ( taddr -- w ) >image t@ ;
212: : ! ( w taddr -- ) >image t! ;
1.1 anton 213: : c@ ( taddr -- char ) >image c@ ;
214: : c! ( char taddr -- ) >image c! ;
1.7 anton 215: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
216: : 2! ( x1 x2 taddr -- ) T swap over ! cell+ ! H ;
1.1 anton 217:
218: \ Target compilation primitives 06oct92py
219: \ included A! 16may93jaw
220:
221: : here ( -- there ) there ;
222: : allot ( n -- ) tdp +! ;
223: : , ( w -- ) T here H cell T allot ! H ;
224: : c, ( char -- ) T here 1 allot c! H ;
225: : align ( -- ) T here H align+ 0 ?DO bl T c, H LOOP ;
1.22 anton 226: : cfalign ( -- )
227: T here H cfalign+ 0 ?DO bl T c, H LOOP ;
1.1 anton 228:
229: : A! dup relon T ! H ;
230: : A, ( w -- ) T here H relon T , H ;
231:
232: >CROSS
233:
234: \ threading modell 13dec92py
235:
236: \ generic threading modell
237: : docol, ( -- ) :docol T A, 0 , H ;
238:
239: >TARGET
240: : >body ( cfa -- pfa ) T cell+ cell+ H ;
241: >CROSS
242:
1.3 pazsan 243: : dodoes, ( -- ) T :doesjump A, 0 , H ;
1.1 anton 244:
245: \ Ghost Builder 06oct92py
246:
247: \ <T T> new version with temp variable 10may93jaw
248:
249: VARIABLE VocTemp
250:
251: : <T get-current VocTemp ! also Ghosts definitions ;
252: : T> previous VocTemp @ set-current ;
253:
254: 4711 Constant <fwd> 4712 Constant <res>
255: 4713 Constant <imm>
256:
257: \ iForth makes only immediate directly after create
258: \ make atonce trick! ?
259:
260: Variable atonce atonce off
261:
262: : NoExec true ABORT" CROSS: Don't execute ghost" ;
263:
264: : GhostHeader <fwd> , 0 , ['] NoExec , ;
265:
266: : >magic ; : >link cell+ ; : >exec cell+ cell+ ;
267: : >end 3 cells + ;
268:
1.11 pazsan 269: Variable last-ghost
1.1 anton 270: : Make-Ghost ( "name" -- ghost )
271: >in @ GhostName swap >in !
272: <T Create atonce @ IF immediate atonce off THEN
273: here tuck swap ! ghostheader T>
1.11 pazsan 274: DOES> dup last-ghost ! >exec @ execute ;
1.1 anton 275:
276: \ ghost words 14oct92py
277: \ changed: 10may93py/jaw
278:
279: : gfind ( string -- ghost true/1 / string false )
280: \ searches for string in word-list ghosts
281: \ !! wouldn't it be simpler to just use search-wordlist ? ae
1.5 pazsan 282: dup count [ ' ghosts >body ] ALiteral search-wordlist
1.13 pazsan 283: dup IF >r >body nip r> THEN ;
1.1 anton 284:
285: VARIABLE Already
286:
287: : ghost ( "name" -- ghost )
288: Already off
1.13 pazsan 289: >in @ bl word gfind IF Already on nip EXIT THEN
1.1 anton 290: drop >in ! Make-Ghost ;
291:
292: \ resolve 14oct92py
293:
294: : resolve-loop ( ghost tcfa -- ghost tcfa )
295: >r dup >link @
296: BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
297:
298: \ exists 9may93jaw
299:
300: : exists ( ghost tcfa -- )
301: over GhostNames
302: BEGIN @ dup
303: WHILE 2dup cell+ @ =
304: UNTIL
1.18 pazsan 305: 2 cells + count cr ." CROSS: Exists: " type 4 spaces drop
1.1 anton 306: swap cell+ !
1.24 pazsan 307: ELSE true abort" CROSS: Ghostnames inconsistent "
1.1 anton 308: THEN ;
309:
310: : resolve ( ghost tcfa -- )
311: over >magic @ <fwd> <> IF exists EXIT THEN
312: resolve-loop over >link ! <res> swap >magic ! ;
313:
314: \ gexecute ghost, 01nov92py
315:
316: : do-forward ( ghost -- )
317: >link dup @ there rot ! T A, H ;
318: : do-resolve ( ghost -- )
319: >link @ T A, H ;
320:
321: : gexecute ( ghost -- ) dup @
322: <fwd> = IF do-forward ELSE do-resolve THEN ;
323: : ghost, ghost gexecute ;
324:
325: \ .unresolved 11may93jaw
326:
327: variable ResolveFlag
328:
329: \ ?touched 11may93jaw
330:
331: : ?touched ( ghost -- flag ) dup >magic @ <fwd> = swap >link @
332: 0 <> and ;
333:
334: : ?resolved ( ghostname -- )
335: dup cell+ @ ?touched
336: IF cell+ cell+ count cr type ResolveFlag on ELSE drop THEN ;
337:
338: >MINIMAL
339: : .unresolved ( -- )
340: ResolveFlag off cr ." Unresolved: "
341: Ghostnames
342: BEGIN @ dup
343: WHILE dup ?resolved
1.10 anton 344: REPEAT drop ResolveFlag @
345: IF
1.11 pazsan 346: abort" Unresolved words!"
1.10 anton 347: ELSE
348: ." Nothing!"
349: THEN
350: cr ;
1.1 anton 351:
352: >CROSS
353: \ Header states 12dec92py
354:
355: : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
356:
357: VARIABLE ^imm
358:
359: >TARGET
360: : immediate 20 flag!
1.18 pazsan 361: ^imm @ @ dup <imm> = IF drop EXIT THEN
1.1 anton 362: <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
363: <imm> ^imm @ ! ;
1.8 pazsan 364: : restrict 40 flag! ;
1.1 anton 365: >CROSS
366:
367: \ ALIAS2 ansforth conform alias 9may93jaw
368:
369: : ALIAS2 create here 0 , DOES> @ execute ;
370: \ usage:
1.18 pazsan 371: \ ' <name> alias2 bla !
1.1 anton 372:
373: \ Target Header Creation 01nov92py
374:
375: : string, ( addr count -- )
1.28 pazsan 376: dup T c, H bounds ?DO I c@ T c, H LOOP ;
1.22 anton 377: : name, ( "name" -- ) bl word count string, T cfalign H ;
1.1 anton 378: : view, ( -- ) ( dummy ) ;
379:
1.25 pazsan 380: \ Target Document Creation (goes to crossdoc.fd) 05jul95py
381:
382: s" crossdoc.fd" r/w create-file throw value doc-file-id
383: \ contains the file-id of the documentation file
384:
385: : \G ( -- )
386: source >in @ /string doc-file-id write-line throw
387: source >in ! drop ; immediate
388:
389: Variable to-doc
390:
391: : cross-doc-entry ( -- )
392: to-doc @ tlast @ 0<> and \ not an anonymous (i.e. noname) header
393: IF
394: s" " doc-file-id write-line throw
395: s" make-doc " doc-file-id write-file throw
396: tlast @ >image count $1F and doc-file-id write-file throw
397: >in @
398: [char] ( parse 2drop
399: [char] ) parse doc-file-id write-file throw
400: s" )" doc-file-id write-file throw
401: [char] \ parse 2drop
402: POSTPONE \g
403: >in !
404: THEN to-doc on ;
405:
1.28 pazsan 406: \ Target TAGS creation
407:
1.33 anton 408: s" kernal.TAGS" r/w create-file throw value tag-file-id
1.28 pazsan 409: \ contains the file-id of the tags file
410:
411: Create tag-beg 2 c, 7F c, bl c,
412: Create tag-end 2 c, bl c, 01 c,
413: Create tag-bof 1 c, 0C c,
414:
415: 2variable last-loadfilename 0 0 last-loadfilename 2!
416:
417: : put-load-file-name ( -- )
418: loadfilename 2@ last-loadfilename 2@ d<>
419: IF
420: tag-bof count tag-file-id write-line throw
1.31 anton 421: sourcefilename 2dup
1.28 pazsan 422: tag-file-id write-file throw
423: last-loadfilename 2!
424: s" ,0" tag-file-id write-line throw
425: THEN ;
426:
427: : cross-tag-entry ( -- )
428: tlast @ 0<> \ not an anonymous (i.e. noname) header
429: IF
430: put-load-file-name
431: source >in @ min tag-file-id write-file throw
432: tag-beg count tag-file-id write-file throw
433: tlast @ >image count $1F and tag-file-id write-file throw
434: tag-end count tag-file-id write-file throw
1.31 anton 435: base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw
1.28 pazsan 436: \ >in @ 0 <# #s [char] , hold #> tag-file-id write-line throw
437: s" ,0" tag-file-id write-line throw
438: base !
439: THEN ;
440:
441: \ Target header creation
442:
1.1 anton 443: VARIABLE CreateFlag CreateFlag off
444:
445: : (Theader ( "name" -- ghost ) T align H view,
446: tlast @ dup 0> IF T 1 cells - THEN A, H there tlast !
447: >in @ name, >in ! T here H tlastcfa !
448: CreateFlag @ IF
1.18 pazsan 449: >in @ alias2 swap >in ! \ create alias in target
450: >in @ ghost swap >in !
451: swap also ghosts ' previous swap ! \ tick ghost and store in alias
452: CreateFlag off
1.1 anton 453: ELSE ghost THEN
454: dup >magic ^imm ! \ a pointer for immediate
455: Already @ IF dup >end tdoes !
456: ELSE 0 tdoes ! THEN
1.25 pazsan 457: 80 flag!
1.28 pazsan 458: cross-doc-entry cross-tag-entry ;
1.1 anton 459:
460: VARIABLE ;Resolve 1 cells allot
461:
1.11 pazsan 462: : Theader ( "name" -- ghost )
463: (THeader dup there resolve 0 ;Resolve ! ;
1.1 anton 464:
465: >TARGET
466: : Alias ( cfa -- ) \ name
1.25 pazsan 467: dup 0< IF to-doc off THEN
1.1 anton 468: (THeader over resolve T A, H 80 flag! ;
469: >CROSS
470:
471: \ Conditionals and Comments 11may93jaw
472:
473: : ;Cond
474: postpone ;
475: swap ! ; immediate
476:
477: : Cond: ( -- ) \ name {code } ;
478: atonce on
479: ghost
480: >exec
481: :NONAME ;
482:
483: : restrict? ( -- )
484: \ aborts on interprete state - ae
485: state @ 0= ABORT" CROSS: Restricted" ;
486:
487: : Comment ( -- )
488: >in @ atonce on ghost swap >in ! ' swap >exec ! ;
489:
490: Comment ( Comment \
491:
492: \ Predefined ghosts 12dec92py
493:
494: ghost 0= drop
495: ghost branch ghost ?branch 2drop
496: ghost (do) ghost (?do) 2drop
497: ghost (for) drop
498: ghost (loop) ghost (+loop) 2drop
499: ghost (next) drop
1.2 pazsan 500: ghost unloop ghost ;S 2drop
1.1 anton 501: ghost lit ghost (compile) ghost ! 2drop drop
1.29 anton 502: ghost (does>) ghost noop 2drop
1.1 anton 503: ghost (.") ghost (S") ghost (ABORT") 2drop drop
1.9 pazsan 504: ghost '
1.1 anton 505:
506: \ compile 10may93jaw
507:
508: : compile ( -- ) \ name
509: restrict?
1.13 pazsan 510: bl word gfind dup 0= ABORT" CROSS: Can't compile "
1.1 anton 511: 0> ( immediate? )
512: IF >exec @ compile,
513: ELSE postpone literal postpone gexecute THEN ;
514: immediate
515:
516: >TARGET
1.13 pazsan 517: : ' ( -- cfa ) bl word gfind 0= ABORT" CROSS: undefined "
1.1 anton 518: dup >magic @ <fwd> = ABORT" CROSS: forward " >link @ ;
519:
520: Cond: ['] compile lit ghost gexecute ;Cond
1.14 anton 521:
522: Cond: chars ;Cond
1.1 anton 523:
524: >CROSS
525: \ tLiteral 12dec92py
526:
527: : lit, ( n -- ) compile lit T , H ;
528: : alit, ( n -- ) compile lit T A, H ;
529:
530: >TARGET
531: Cond: Literal ( n -- ) restrict? lit, ;Cond
532: Cond: ALiteral ( n -- ) restrict? alit, ;Cond
533:
534: : Char ( "<char>" -- ) bl word char+ c@ ;
535: Cond: [Char] ( "<char>" -- ) restrict? Char lit, ;Cond
536:
537: >CROSS
538: \ Target compiling loop 12dec92py
539: \ ">tib trick thrown out 10may93jaw
540: \ number? defined at the top 11may93jaw
541:
542: \ compiled word might leave items on stack!
543: : tcom ( in name -- )
544: gfind ?dup IF 0> IF nip >exec @ execute
545: ELSE nip gexecute THEN EXIT THEN
546: number? dup IF 0> IF swap lit, THEN lit, drop
547: ELSE 2drop >in !
548: ghost gexecute THEN ;
549:
550: >TARGET
551: \ : ; DOES> 13dec92py
552: \ ] 9may93py/jaw
553:
554: : ] state on
555: BEGIN
1.13 pazsan 556: BEGIN >in @ bl word
1.1 anton 557: dup c@ 0= WHILE 2drop refill 0=
558: ABORT" CROSS: End of file while target compiling"
559: REPEAT
560: tcom
561: state @
562: 0=
563: UNTIL ;
564:
565: \ by the way: defining a second interpreter (a compiler-)loop
566: \ is not allowed if a system should be ans conform
567:
568: : : ( -- colon-sys ) \ Name
569: (THeader ;Resolve ! there ;Resolve cell+ !
570: docol, depth T ] H ;
571:
1.2 pazsan 572: Cond: EXIT ( -- ) restrict? compile ;S ;Cond
1.6 anton 573:
574: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
1.2 pazsan 575:
1.1 anton 576: Cond: ; ( -- ) restrict?
577: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
578: ELSE true ABORT" CROSS: Stack empty" THEN
1.2 pazsan 579: compile ;S state off
1.1 anton 580: ;Resolve @
581: IF ;Resolve @ ;Resolve cell+ @ resolve THEN
582: ;Cond
583: Cond: [ restrict? state off ;Cond
584:
585: >CROSS
586: : !does :dodoes tlastcfa @ tuck T ! cell+ ! H ;
587:
588: >TARGET
589: Cond: DOES> restrict?
1.29 anton 590: compile (does>) dodoes, tdoes @ ?dup IF @ T here H resolve THEN
1.1 anton 591: ;Cond
592: : DOES> dodoes, T here H !does depth T ] H ;
593:
594: >CROSS
595: \ Creation 01nov92py
596:
597: \ Builder 11may93jaw
598:
599: : Builder ( Create do: "name" -- )
600: >in @ alias2 swap dup >in ! >r >r
601: Make-Ghost rot swap >exec ! ,
602: r> r> >in !
1.11 pazsan 603: also ghosts ' previous swap ! ;
604: \ DOES> dup >exec @ execute ;
1.1 anton 605:
606: : gdoes, ( ghost -- ) >end @ dup >magic @ <fwd> <>
607: IF dup >link @ dup 0< IF T A, 0 , H drop EXIT THEN drop THEN
1.4 pazsan 608: :dodoes T A, H gexecute T here H cell - reloff ;
1.1 anton 609:
1.11 pazsan 610: : TCreate ( -- )
611: last-ghost @
1.1 anton 612: CreateFlag on
1.11 pazsan 613: Theader >r dup gdoes,
614: >end @ >exec @ r> >exec ! ;
1.1 anton 615:
616: : Build: ( -- [xt] [colon-sys] )
617: :noname postpone TCreate ;
618:
619: : gdoes> ( ghost -- addr flag )
1.11 pazsan 620: last-ghost @
1.1 anton 621: state @ IF gexecute true EXIT THEN
622: cell+ @ T >body H false ;
623:
624: \ DO: ;DO 11may93jaw
625: \ changed to ?EXIT 10may93jaw
626:
627: : DO: ( -- addr [xt] [colon-sys] )
628: here ghostheader
1.11 pazsan 629: :noname postpone gdoes> postpone ?EXIT ;
1.1 anton 630:
631: : ;DO ( addr [xt] [colon-sys] -- )
632: postpone ; ( S addr xt )
633: over >exec ! ; immediate
634:
635: : by ( -- addr ) \ Name
636: ghost >end @ ;
637:
638: >TARGET
639: \ Variables and Constants 05dec92py
640:
641: Build: ;
642: DO: ( ghost -- addr ) ;DO
643: Builder Create
644: by Create :dovar resolve
645:
646: Build: T 0 , H ;
647: by Create
648: Builder Variable
649:
650: Build: T 0 A, H ;
651: by Create
652: Builder AVariable
653:
1.3 pazsan 654: \ User variables 04may94py
655:
656: >CROSS
657: Variable tup 0 tup !
658: Variable tudp 0 tudp !
659: : u, ( n -- udp )
660: tup @ tudp @ + T ! H
1.19 pazsan 661: tudp @ dup T cell+ H tudp ! ;
1.3 pazsan 662: : au, ( n -- udp )
663: tup @ tudp @ + T A! H
1.19 pazsan 664: tudp @ dup T cell+ H tudp ! ;
1.3 pazsan 665: >TARGET
666:
667: Build: T 0 u, , H ;
668: DO: ( ghost -- up-addr ) T @ H tup @ + ;DO
1.1 anton 669: Builder User
1.3 pazsan 670: by User :douser resolve
1.1 anton 671:
1.3 pazsan 672: Build: T 0 u, , 0 u, drop H ;
673: by User
1.1 anton 674: Builder 2User
675:
1.3 pazsan 676: Build: T 0 au, , H ;
677: by User
1.1 anton 678: Builder AUser
679:
680: Build: ( n -- ) T , H ;
681: DO: ( ghost -- n ) T @ H ;DO
682: Builder Constant
683: by Constant :docon resolve
684:
685: Build: ( n -- ) T A, H ;
686: by Constant
687: Builder AConstant
688:
1.24 pazsan 689: Build: ( d -- ) T , , H ;
690: DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO
691: Builder 2Constant
692:
1.1 anton 693: Build: T 0 , H ;
694: by Constant
695: Builder Value
696:
1.32 pazsan 697: Build: T 0 A, H ;
698: by Constant
699: Builder AValue
700:
1.1 anton 701: Build: ( -- ) compile noop ;
702: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
703: Builder Defer
1.10 anton 704: by Defer :dodefer resolve
1.24 pazsan 705:
706: \ Sturctures 23feb95py
707:
708: >CROSS
709: : nalign ( addr1 n -- addr2 )
710: \ addr2 is the aligned version of addr1 wrt the alignment size n
711: 1- tuck + swap invert and ;
712: >TARGET
713:
714: Build: >r rot r@ nalign dup T , H ( align1 size offset )
715: + swap r> nalign ;
716: DO: T @ H + ;DO
717: Builder Field
1.29 anton 718: by Field :dofield resolve
1.24 pazsan 719:
720: : struct T 0 1 chars H ;
721: : end-struct T 2Constant H ;
722:
723: : cells: ( n -- size align )
724: T cells 1 cells H ;
725:
726: \ ' 2Constant Alias2 end-struct
727: \ 0 1 T Chars H 2Constant struct
1.1 anton 728:
729: \ structural conditionals 17dec92py
730:
731: >CROSS
732: : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
733: : sys? ( sys -- sys ) dup 0= ?struc ;
734: : >mark ( -- sys ) T here 0 , H ;
735: : >resolve ( sys -- ) T here over - swap ! H ;
736: : <resolve ( sys -- ) T here - , H ;
737: >TARGET
738:
739: \ Structural Conditionals 12dec92py
740:
741: Cond: BUT restrict? sys? swap ;Cond
742: Cond: YET restrict? sys? dup ;Cond
743:
744: >CROSS
745: Variable tleavings
746: >TARGET
747:
748: Cond: DONE ( addr -- ) restrict? tleavings @
749: BEGIN 2dup u> 0= WHILE dup T @ H swap >resolve REPEAT
750: tleavings ! drop ;Cond
751:
752: >CROSS
753: : (leave T here H tleavings @ T , H tleavings ! ;
754: >TARGET
755:
756: Cond: LEAVE restrict? compile branch (leave ;Cond
757: Cond: ?LEAVE restrict? compile 0= compile ?branch (leave ;Cond
758:
759: \ Structural Conditionals 12dec92py
760:
761: Cond: AHEAD restrict? compile branch >mark ;Cond
762: Cond: IF restrict? compile ?branch >mark ;Cond
763: Cond: THEN restrict? sys? dup T @ H ?struc >resolve ;Cond
764: Cond: ELSE restrict? sys? compile AHEAD swap compile THEN ;Cond
765:
766: Cond: BEGIN restrict? T here H ;Cond
767: Cond: WHILE restrict? sys? compile IF swap ;Cond
768: Cond: AGAIN restrict? sys? compile branch <resolve ;Cond
769: Cond: UNTIL restrict? sys? compile ?branch <resolve ;Cond
770: Cond: REPEAT restrict? over 0= ?struc compile AGAIN compile THEN ;Cond
771:
772: \ Structural Conditionals 12dec92py
773:
774: Cond: DO restrict? compile (do) T here H ;Cond
775: Cond: ?DO restrict? compile (?do) (leave T here H ;Cond
776: Cond: FOR restrict? compile (for) T here H ;Cond
777:
778: >CROSS
779: : loop] dup <resolve cell - compile DONE compile unloop ;
780: >TARGET
781:
782: Cond: LOOP restrict? sys? compile (loop) loop] ;Cond
783: Cond: +LOOP restrict? sys? compile (+loop) loop] ;Cond
784: Cond: NEXT restrict? sys? compile (next) loop] ;Cond
785:
786: \ String words 23feb93py
787:
788: : ," [char] " parse string, T align H ;
789:
790: Cond: ." restrict? compile (.") T ," H ;Cond
791: Cond: S" restrict? compile (S") T ," H ;Cond
792: Cond: ABORT" restrict? compile (ABORT") T ," H ;Cond
793:
794: Cond: IS T ' >body H compile ALiteral compile ! ;Cond
795: : IS T ' >body ! H ;
1.9 pazsan 796: Cond: TO T ' >body H compile ALiteral compile ! ;Cond
797: : TO T ' >body ! H ;
1.1 anton 798:
799: \ LINKED ERR" ENV" 2ENV" 18may93jaw
800:
801: \ linked list primitive
802: : linked T here over @ A, swap ! H ;
803:
804: : err" s" ErrLink linked" evaluate T , H
805: [char] " parse string, T align H ;
806:
807: : env" [char] " parse s" EnvLink linked" evaluate
808: string, T align , H ;
809:
810: : 2env" [char] " parse s" EnvLink linked" evaluate
811: here >r string, T align , , H
812: r> dup T c@ H 80 and swap T c! H ;
813:
814: \ compile must be last 22feb93py
815:
816: Cond: compile ( -- ) restrict? \ name
1.13 pazsan 817: bl word gfind dup 0= ABORT" CROSS: Can't compile"
1.1 anton 818: 0> IF gexecute
819: ELSE dup >magic @ <imm> =
820: IF gexecute
821: ELSE compile (compile) gexecute THEN THEN ;Cond
822:
823: Cond: postpone ( -- ) restrict? \ name
1.13 pazsan 824: bl word gfind dup 0= ABORT" CROSS: Can't compile"
1.1 anton 825: 0> IF gexecute
826: ELSE dup >magic @ <imm> =
827: IF gexecute
828: ELSE compile (compile) gexecute THEN THEN ;Cond
829:
830: >MINIMAL
831: also minimal
832: \ Usefull words 13feb93py
833:
834: : KB 400 * ;
835:
836: \ define new [IFDEF] and [IFUNDEF] 20may93jaw
837:
1.13 pazsan 838: : there? bl word gfind IF >magic @ <fwd> <> ELSE drop false THEN ;
1.1 anton 839:
840: : [IFDEF] there? postpone [IF] ;
841: : [IFUNDEF] there? 0= postpone [IF] ;
842:
843: \ C: \- \+ Conditional Compiling 09jun93jaw
844:
845: : C: >in @ there? 0=
846: IF >in ! T : H
847: ELSE drop
848: BEGIN bl word dup c@
849: IF count comment? s" ;" compare 0= ?EXIT
850: ELSE refill 0= ABORT" CROSS: Out of Input while C:"
851: THEN
852: AGAIN
853: THEN ;
854:
855: also minimal
856:
857: : \- there? IF postpone \ THEN ;
858: : \+ there? 0= IF postpone \ THEN ;
859:
860: : [IF] postpone [IF] ;
861: : [THEN] postpone [THEN] ;
862: : [ELSE] postpone [ELSE] ;
863:
864: Cond: [IF] [IF] ;Cond
865: Cond: [IFDEF] [IFDEF] ;Cond
866: Cond: [IFUNDEF] [IFUNDEF] ;Cond
867: Cond: [THEN] [THEN] ;Cond
868: Cond: [ELSE] [ELSE] ;Cond
869:
870: \ save-cross 17mar93py
871:
872: \ i'm not interested in bigforth features this time 10may93jaw
873: \ [IFDEF] file
874: \ also file
875: \ [THEN]
876: \ included throw after create-file 11may93jaw
877:
1.12 anton 878: bigendian Constant bigendian
1.1 anton 879:
1.34 ! anton 880: Create magic s" Gforth10" here over allot swap move
1.26 pazsan 881:
882: [char] 1 bigendian + cell + magic 7 + c!
883:
1.34 ! anton 884: : save-cross ( "image-name" "binary-name" -- )
! 885: bl parse ." Saving to " 2dup type cr
1.1 anton 886: w/o bin create-file throw >r
1.34 ! anton 887: s" #! " r@ write-file throw
! 888: bl parse r@ write-file throw
! 889: s" -i" r@ write-file throw
! 890: #lf r@ emit-file throw
! 891: r@ dup file-position throw drop 8 mod 8 swap ( file-id limit index )
! 892: ?do
! 893: bl over emit-file throw
! 894: loop
! 895: drop
1.26 pazsan 896: magic 8 r@ write-file throw \ write magic
1.16 pazsan 897: image @ there r@ write-file throw \ write image
898: bit$ @ there 1- cell>bit rshift 1+
899: r@ write-file throw \ write tags
1.1 anton 900: r> close-file throw ;
901:
902: \ words that should be in minimal
903:
904: : + + ; : 1- 1- ;
905: : - - ; : 2* 2* ;
1.11 pazsan 906: : * * ; : / / ;
1.1 anton 907: : dup dup ; : over over ;
908: : swap swap ; : rot rot ;
1.19 pazsan 909: : drop drop ; : = = ;
1.13 pazsan 910: : lshift lshift ; : 2/ 2/ ;
1.19 pazsan 911: : . . ;
1.13 pazsan 912: cell constant cell
1.1 anton 913:
914: \ include bug5.fs
915: \ only forth also minimal definitions
916:
1.25 pazsan 917: : \ postpone \ ;
918: : \G postpone \G ;
919: : ( postpone ( ;
1.1 anton 920: : include bl word count included ;
921: : .( [char] ) parse type ;
922: : cr cr ;
923:
924: : times 0 ?DO dup T c, H LOOP drop ; \ used for space table creation
925: only forth also minimal definitions
926:
927: \ cross-compiler words
928:
929: : decimal decimal ;
930: : hex hex ;
931:
1.3 pazsan 932: : tudp T tudp H ;
933: : tup T tup H ; minimal
1.1 anton 934:
935: \ for debugging...
936: : order order ;
937: : words words ;
938: : .s .s ;
939:
940: : bye bye ;
941:
942: \ turnkey direction
943: : H forth ; immediate
944: : T minimal ; immediate
945: : G ghosts ; immediate
946:
947: : turnkey 0 set-order also Target definitions
948: also Minimal also ;
949:
950: \ these ones are pefered:
951:
952: : lock turnkey ;
953: : unlock forth also cross ;
954:
955: unlock definitions also minimal
956: : lock lock ;
957: lock
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