1: \ CROSS.FS The Cross-Compiler 06oct92py
2: \ Idea and implementation: Bernd Paysan (py)
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.
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:
40: \ needed? works better now!!! 01mar97jaw
41: \ mach file is only loaded into target
42: \ cell corrected
43: \ romable extansions 27apr97-5jun97jaw
44:
45:
46: hex \ the defualt base for the cross-compiler is hex !!
47: Warnings off
48:
49: \ words that are generaly useful
50:
51: : >wordlist ( vocabulary-xt -- wordlist-struct )
52: also execute get-order swap >r 1- set-order r> ;
53:
54: : umax 2dup u< IF swap THEN drop ;
55: : umin 2dup u> IF swap THEN drop ;
56:
57: : string, ( c-addr u -- )
58: \ puts down string as cstring
59: dup c, here swap chars dup allot move ;
60:
61: : SetValue ( n -- <name> )
62: \G Same behaviour as "Value" when the <name> is not defined
63: \G Same behaviour as "to" when <name> is defined
64: \G SetValue searches in the current vocabulary
65: save-input bl word >r restore-input throw r> count
66: get-current search-wordlist
67: IF bl word drop >body ! ELSE Value THEN ;
68:
69: : DefaultValue ( n -- <name> )
70: \G Same behaviour as "Value" when the <name> is not defined
71: \G SetValue searches in the current vocabulary
72: save-input bl word >r restore-input throw r> count
73: get-current search-wordlist
74: IF bl word drop drop drop ELSE Value THEN ;
75:
76: hex
77:
78: Vocabulary Cross
79: Vocabulary Target
80: Vocabulary Ghosts
81: VOCABULARY Minimal
82: only Forth also Target also also
83: definitions Forth
84:
85: : T previous Cross also Target ; immediate
86: : G Ghosts ; immediate
87: : H previous Forth also Cross ; immediate
88:
89: forth definitions
90:
91: : T previous Cross also Target ; immediate
92: : G Ghosts ; immediate
93:
94: : >cross also Cross definitions previous ;
95: : >target also Target definitions previous ;
96: : >minimal also Minimal definitions previous ;
97:
98: H
99:
100: >CROSS
101:
102: \ 1 Constant Cross-Flag \ to check whether assembler compiler plug-ins are
103: \ for cross-compiling
104: \ No! we use "[IFUNDEF]" there to find out whether we are target compiling!!!
105:
106: : comment? ( c-addr u -- c-addr u )
107: 2dup s" (" compare 0=
108: IF postpone (
109: ELSE 2dup s" \" compare 0= IF postpone \ THEN
110: THEN ;
111:
112: \ Begin CROSS COMPILER:
113:
114:
115:
116: \ \ -------------------- Error Handling 05aug97jaw
117:
118: \ Flags
119:
120: also forth definitions \ these values may be predefined before
121: \ the cross-compiler is loaded
122:
123: false DefaultValue stack-warn \ check on empty stack at any definition
124: false DefaultValue create-forward-warn \ warn on forward declaration of created words
125:
126: [IFUNDEF] DebugMaskSrouce Variable DebugMaskSource 0 DebugMaskSource ! [THEN]
127: [IFUNDEF] DebugMaskCross Variable DebugMaskCross 0 DebugMaskCross ! [THEN]
128:
129: previous >CROSS
130:
131: : .dec
132: base @ decimal swap . base ! ;
133:
134: : .sourcepos
135: cr sourcefilename type ." :"
136: sourceline# .dec ;
137:
138: : warnhead
139: \G display error-message head
140: \G perhaps with linenumber and filename
141: .sourcepos ." Warning: " ;
142:
143: : empty? depth IF .sourcepos ." Stack not empty!" THEN ;
144:
145: stack-warn [IF]
146: : defempty? empty? ;
147: [ELSE]
148: : defempty? ; immediate
149: [THEN]
150:
151:
152: \ \ GhostNames Ghosts 9may93jaw
153:
154: \ second name source to search trough list
155:
156: VARIABLE GhostNames
157: 0 GhostNames !
158:
159: : GhostName ( -- addr )
160: here GhostNames @ , GhostNames ! here 0 ,
161: bl word count
162: \ 2dup type space
163: string, \ !! cfalign ?
164: align ;
165:
166: \ Ghost Builder 06oct92py
167:
168: \ <T T> new version with temp variable 10may93jaw
169:
170: VARIABLE VocTemp
171:
172: : <T get-current VocTemp ! also Ghosts definitions ;
173: : T> previous VocTemp @ set-current ;
174:
175: hex
176: 4711 Constant <fwd> 4712 Constant <res>
177: 4713 Constant <imm> 4714 Constant <do:>
178:
179: \ iForth makes only immediate directly after create
180: \ make atonce trick! ?
181:
182: Variable atonce atonce off
183:
184: : NoExec true ABORT" CROSS: Don't execute ghost" ;
185:
186: : GhostHeader <fwd> , 0 , ['] NoExec , ;
187:
188: : >magic ; \ type of ghost
189: : >link cell+ ; \ pointer where ghost is in target, or if unresolved
190: \ points to the where we have to resolve (linked-list)
191: : >exec cell+ cell+ ; \ execution symantics (while target compiling) of ghost
192: : >end 3 cells + ; \ room for additional tags
193: \ for builder (create, variable...) words the
194: \ execution symantics of words built are placed here
195:
196: Variable executed-ghost \ last executed ghost, needed in tcreate and gdoes>
197: Variable last-ghost \ last ghost that is created
198: Variable last-header-ghost \ last ghost definitions with header
199:
200: : Make-Ghost ( "name" -- ghost )
201: >in @ GhostName swap >in !
202: <T Create atonce @ IF immediate atonce off THEN
203: here tuck swap ! ghostheader T>
204: dup last-ghost !
205: DOES> dup executed-ghost ! >exec @ execute ;
206:
207: \ ghost words 14oct92py
208: \ changed: 10may93py/jaw
209:
210: : gfind ( string -- ghost true/1 / string false )
211: \ searches for string in word-list ghosts
212: dup count [ ' ghosts >wordlist ] ALiteral search-wordlist
213: dup IF >r >body nip r> THEN ;
214:
215: : gdiscover ( xt -- ghost true | xt false )
216: GhostNames
217: BEGIN @ dup
218: WHILE 2dup
219: cell+ @ dup >magic @ <fwd> <>
220: >r >link @ = r> and
221: IF cell+ @ nip true EXIT THEN
222: REPEAT
223: drop false ;
224:
225: VARIABLE Already
226:
227: : ghost ( "name" -- ghost )
228: Already off
229: >in @ bl word gfind IF Already on nip EXIT THEN
230: drop >in ! Make-Ghost ;
231:
232: : >ghostname ( ghost -- adr len )
233: GhostNames
234: BEGIN @ dup
235: WHILE 2dup cell+ @ =
236: UNTIL nip 2 cells + count
237: ELSE 2drop true abort" CROSS: Ghostnames inconsistent"
238: THEN ;
239:
240: ' >ghostname ALIAS @name
241:
242: : forward? ( ghost -- flag )
243: >magic @ <fwd> = ;
244:
245: \ Predefined ghosts 12dec92py
246:
247: ghost 0= drop
248: ghost branch ghost ?branch 2drop
249: ghost (do) ghost (?do) 2drop
250: ghost (for) drop
251: ghost (loop) ghost (+loop) 2drop
252: ghost (next) drop
253: ghost unloop ghost ;S 2drop
254: ghost lit ghost (compile) ghost ! 2drop drop
255: ghost (does>) ghost noop 2drop
256: ghost (.") ghost (S") ghost (ABORT") 2drop drop
257: ghost ' drop
258: ghost :docol ghost :doesjump ghost :dodoes 2drop drop
259: ghost over ghost = ghost drop 2drop drop
260: ghost - drop
261:
262: \ \ Parameter for target systems 06oct92py
263:
264: \ we define it ans like...
265: wordlist Constant target-environment
266:
267: VARIABLE env-current \ save information of current dictionary to restore with environ>
268:
269: : >ENVIRON get-current env-current ! target-environment set-current ;
270: : ENVIRON> env-current @ set-current ;
271:
272: >TARGET
273:
274: : environment?
275: target-environment search-wordlist
276: IF execute true ELSE false THEN ;
277:
278: : e? name T environment? H 0= ABORT" environment variable not defined!" ;
279:
280: : has? name T environment? H
281: IF \ environment variable is present, return its value
282: ELSE \ environment variable is not present, return false
283: \ !! JAW abort is just for testing
284: false true ABORT" arg"
285: THEN ;
286:
287: : $has? T environment? H IF ELSE false THEN ;
288:
289: >ENVIRON
290: false SetValue ionly
291: true SetValue cross
292: >TARGET
293:
294: mach-file count included hex
295:
296: >ENVIRON
297:
298: s" interpreter" T environment? H 0= ?dup nip [IF] true Value interpreter [THEN]
299: s" ITC" T environment? H 0= ?dup nip [IF] true SetValue ITC [THEN]
300: s" rom" T environment? H 0= ?dup nip [IF] false Value rom [THEN]
301:
302: >TARGET
303: s" relocate" T environment? H
304: [IF] SetValue NIL
305: [ELSE] >ENVIRON T NIL H SetValue relocate
306: [THEN]
307:
308: >CROSS
309:
310: \ \ Create additional parameters 19jan95py
311:
312: T
313: NIL Constant TNIL
314: cell Constant tcell
315: cell<< Constant tcell<<
316: cell>bit Constant tcell>bit
317: bits/byte Constant tbits/byte
318: float Constant tfloat
319: 1 bits/byte lshift Constant maxbyte
320: H
321:
322: \ Variables 06oct92py
323:
324: Variable image
325: Variable tlast TNIL tlast ! \ Last name field
326: Variable tlastcfa \ Last code field
327: Variable tdoes \ Resolve does> calls
328: Variable bit$
329:
330: \ statistics 10jun97jaw
331:
332: Variable headers-named 0 headers-named !
333: Variable user-vars 0 user-vars !
334:
335: \ Memory initialisation 05dec92py
336:
337: [IFDEF] Memory \ Memory is a bigFORTH feature
338: also Memory
339: : initmem ( var len -- )
340: 2dup swap handle! >r @ r> erase ;
341: toss
342: [ELSE]
343: : initmem ( var len -- )
344: tuck allocate abort" CROSS: No memory for target"
345: ( len var adr ) dup rot !
346: ( len adr ) swap erase ;
347: [THEN]
348:
349: \ MakeKernal 12dec92py
350:
351: : makekernel ( targetsize -- targetsize )
352: bit$ over 1- tcell>bit rshift 1+ initmem
353: image over initmem ;
354:
355: >MINIMAL
356: : makekernel makekernel ;
357:
358:
359: >CROSS
360:
361: \ memregion.fs
362:
363:
364: Variable last-defined-region \ pointer to last defined region
365: Variable region-link \ linked list with all regions
366: Variable mirrored-link \ linked list for mirrored regions
367: 0 dup mirrored-link ! region-link !
368:
369:
370: : >rdp 2 cells + ;
371: : >rlen cell+ ;
372: : >rstart ;
373:
374:
375: : region ( addr len -- ) \G create a new region
376: \ check whether predefined region exists
377: save-input bl word find >r >r restore-input throw r> r> 0=
378: IF \ make region
379: drop
380: save-input create restore-input throw
381: here last-defined-region !
382: over ( startaddr ) , ( length ) , ( dp ) ,
383: region-link linked name string,
384: ELSE \ store new parameters in region
385: bl word drop
386: >body >r r@ last-defined-region !
387: r@ cell+ ! dup r@ ! r> 2 cells + !
388: THEN ;
389:
390: : borders ( region -- startaddr endaddr ) \G returns lower and upper region border
391: dup @ swap cell+ @ over + ;
392:
393: : extent ( region -- startaddr len ) \G returns the really used area
394: dup @ swap 2 cells + @ over - ;
395:
396: : area ( region -- startaddr totallen ) \G returns the total area
397: dup @ swap cell+ @ ;
398:
399: : mirrored \G mark a region as mirrored
400: mirrored-link
401: linked last-defined-region @ , ;
402:
403: : .addr
404: base @ >r hex
405: tcell 2 u>
406: IF s>d <# # # # # '. hold # # # # #> type
407: ELSE s>d <# # # # # # #> type
408: THEN r> base ! ;
409:
410: : .regions \G display region statistic
411:
412: \ we want to list the regions in the right order
413: \ so first collect all regions on stack
414: 0 region-link @
415: BEGIN dup WHILE dup @ REPEAT drop
416: BEGIN dup
417: WHILE cr 3 cells - >r
418: r@ 4 cells + count tuck type
419: 12 swap - 0 max spaces space
420: ." Start: " r@ @ dup .addr space
421: ." End: " r@ 1 cells + @ + .addr space
422: ." DP: " r> 2 cells + @ .addr
423: REPEAT drop
424: s" rom" T $has? H 0= ?EXIT
425: cr ." Mirrored:"
426: mirrored-link @
427: BEGIN dup
428: WHILE space dup cell+ @ 4 cells + count type @
429: REPEAT drop cr
430: ;
431:
432: \ -------- predefined regions
433:
434: 0 0 region address-space
435: \ total memory addressed and used by the target system
436:
437: 0 0 region dictionary
438: \ rom area for the compiler
439:
440: T has? rom H
441: [IF]
442: 0 0 region ram-dictionary mirrored
443: \ ram area for the compiler
444: [ELSE]
445: ' dictionary ALIAS ram-dictionary
446: [THEN]
447:
448: 0 0 region return-stack
449:
450: 0 0 region data-stack
451:
452: 0 0 region tib-region
453:
454: ' dictionary ALIAS rom-dictionary
455:
456:
457: : setup-target ( -- ) \G initialize targets memory space
458: s" rom" T $has? H
459: IF \ check for ram and rom...
460: address-space area nip
461: ram-dictionary area nip
462: rom-dictionary area nip
463: and and 0=
464: ABORT" CROSS: define address-space, rom- , ram-dictionary, with rom-support!"
465: THEN
466: address-space area nip
467: IF
468: address-space area
469: ELSE
470: dictionary area
471: THEN
472: dup 0=
473: ABORT" CROSS: define at least address-space or dictionary!!"
474: + makekernel drop ;
475:
476: \ switched tdp for rom support 03jun97jaw
477:
478: \ second value is here to store some maximal value for statistics
479: \ tempdp is also embedded here but has nothing to do with rom support
480: \ (needs switched dp)
481:
482: variable tempdp 0 , \ temporary dp for resolving
483: variable tempdp-save
484:
485: 0 [IF]
486: variable romdp 0 , \ Dictionary-Pointer for ramarea
487: variable ramdp 0 , \ Dictionary-Pointer for romarea
488:
489: \
490: variable sramdp \ start of ram-area for forth
491: variable sromdp \ start of rom-area for forth
492:
493: [THEN]
494:
495:
496: 0 value tdp
497: variable fixed \ flag: true: no automatic switching
498: \ false: switching is done automatically
499:
500: \ Switch-Policy:
501: \
502: \ a header is always compiled into rom
503: \ after a created word (create and variable) compilation goes to ram
504: \
505: \ Be careful: If you want to make the data behind create into rom
506: \ you have to put >rom before create!
507:
508: variable constflag constflag off
509:
510: : (switchram)
511: fixed @ ?EXIT s" rom" T $has? H 0= ?EXIT
512: ram-dictionary >rdp to tdp ;
513:
514: : switchram
515: constflag @
516: IF constflag off ELSE (switchram) THEN ;
517:
518: : switchrom
519: fixed @ ?EXIT rom-dictionary >rdp to tdp ;
520:
521: : >tempdp ( addr -- )
522: tdp tempdp-save ! tempdp to tdp tdp ! ;
523: : tempdp> ( -- )
524: tempdp-save @ to tdp ;
525:
526: : >ram fixed off (switchram) fixed on ;
527: : >rom fixed off switchrom fixed on ;
528: : >auto fixed off switchrom ;
529:
530:
531:
532: \ : romstart dup sromdp ! romdp ! ;
533: \ : ramstart dup sramdp ! ramdp ! ;
534:
535: \ default compilation goed to rom
536: \ when romable support is off, only the rom switch is used (!!)
537: >auto
538:
539: : there tdp @ ;
540:
541: >TARGET
542:
543: \ \ Target Memory Handling
544:
545: \ Byte ordering and cell size 06oct92py
546:
547: : cell+ tcell + ;
548: : cells tcell<< lshift ;
549: : chars ;
550: : char+ 1 + ;
551: : floats tfloat * ;
552:
553: >CROSS
554: : cell/ tcell<< rshift ;
555: >TARGET
556: 20 CONSTANT bl
557: \ TNIL Constant NIL
558:
559: >CROSS
560:
561: bigendian
562: [IF]
563: : S! ( n addr -- ) >r s>d r> tcell bounds swap 1-
564: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
565: : S@ ( addr -- n ) >r 0 0 r> tcell bounds
566: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ;
567: [ELSE]
568: : S! ( n addr -- ) >r s>d r> tcell bounds
569: DO maxbyte ud/mod rot I c! LOOP 2drop ;
570: : S@ ( addr -- n ) >r 0 0 r> tcell bounds swap 1-
571: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ;
572: [THEN]
573:
574: >CROSS
575: \ Bit string manipulation 06oct92py
576: \ 9may93jaw
577: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
578: : bits ( n -- n ) chars Bittable + c@ ;
579:
580: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
581: : +bit ( addr n -- ) >bit over c@ or swap c! ;
582: : -bit ( addr n -- ) >bit invert over c@ and swap c! ;
583: : relon ( taddr -- ) bit$ @ swap cell/ +bit ;
584: : reloff ( taddr -- ) bit$ @ swap cell/ -bit ;
585:
586: \ Target memory access 06oct92py
587:
588: : align+ ( taddr -- rest )
589: tcell tuck 1- and - [ tcell 1- ] Literal and ;
590: : cfalign+ ( taddr -- rest )
591: \ see kernel.fs:cfaligned
592: /maxalign tuck 1- and - [ /maxalign 1- ] Literal and ;
593:
594: >TARGET
595: : aligned ( taddr -- ta-addr ) dup align+ + ;
596: \ assumes cell alignment granularity (as GNU C)
597:
598: : cfaligned ( taddr1 -- taddr2 )
599: \ see kernel.fs
600: dup cfalign+ + ;
601:
602: >CROSS
603: : >image ( taddr -- absaddr ) image @ + ;
604: >TARGET
605: : @ ( taddr -- w ) >image S@ ;
606: : ! ( w taddr -- ) >image S! ;
607: : c@ ( taddr -- char ) >image c@ ;
608: : c! ( char taddr -- ) >image c! ;
609: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
610: : 2! ( x1 x2 taddr -- ) T swap over ! cell+ ! H ;
611:
612: \ Target compilation primitives 06oct92py
613: \ included A! 16may93jaw
614:
615: : here ( -- there ) there ;
616: : allot ( n -- ) tdp +! ;
617: : , ( w -- ) T here H tcell T allot ! H T here drop H ;
618: : c, ( char -- ) T here 1 allot c! H ;
619: : align ( -- ) T here H align+ 0 ?DO bl T c, H LOOP ;
620: : cfalign ( -- )
621: T here H cfalign+ 0 ?DO bl T c, H LOOP ;
622:
623: : A! dup relon T ! H ;
624: : A, ( w -- ) T here H relon T , H ;
625:
626: >CROSS
627:
628: : tcmove ( source dest len -- )
629: \G cmove in target memory
630: bounds
631: ?DO dup T c@ H I T c! H 1+
632: LOOP drop ;
633:
634: >TARGET
635: H also Forth definitions \ ." asm: " order
636:
637: : X also target bl word find
638: IF state @ IF compile,
639: ELSE execute THEN
640: ELSE previous ABORT" Cross: access method not supported!"
641: THEN
642: previous ; immediate
643:
644: [IFDEF] asm-include asm-include [THEN] hex
645:
646: previous
647: >CROSS H
648:
649: \ \ -------------------- Compiler Plug Ins 01aug97jaw
650:
651: Defer lit, ( n -- )
652: Defer alit, ( n -- )
653: Defer branch, ( target-addr -- )
654: Defer ?branch, ( target-addr -- )
655: Defer branchmark, ( -- branch-addr )
656: Defer ?branchmark, ( -- branch-addr )
657: Defer branchto,
658: Defer branchtoresolve, ( branch-addr -- )
659: Defer branchfrom, ( -- )
660: Defer branchtomark, ( -- target-addr )
661: Defer colon, ( tcfa -- ) \ compiles call to tcfa at current position
662: Defer colon-resolve ( tcfa addr -- )
663: Defer addr-resolve ( target-addr addr -- )
664:
665: [IFUNDEF] ca>native
666: defer ca>native
667: [THEN]
668:
669: >TARGET
670: DEFER >body \ we need the system >body
671: \ and the target >body
672: >CROSS
673: T 2 cells H VALUE xt>body
674: DEFER doprim,
675: DEFER docol, \ compiles start of definition and doer
676: DEFER doer,
677: DEFER fini, \ compiles end of definition ;s
678: DEFER doeshandler,
679: DEFER dodoes,
680:
681: DEFER ]comp \ starts compilation
682: DEFER comp[ \ ends compilation
683:
684: : (cc) T a, H ; ' (cc) IS colon,
685: : (cr) >tempdp ]comp colon, comp[ tempdp> ; ' (cr) IS colon-resolve
686: : (ar) T ! H ; ' (ar) IS addr-resolve
687:
688: >TARGET
689: : compile, colon, ;
690: >CROSS
691:
692: \ file loading
693:
694: Variable filelist 0 filelist !
695: 0 Value loadfile
696:
697: 0 [IF] \ !! JAW WIP
698:
699: : add-included-file ( adr len -- )
700: dup 2 cells + allocate throw >r
701: r@ 1 cells + dup TO loadfile place
702: filelist @ r@ !
703: r> filelist ! ;
704:
705: : included? ( c-addr u -- f )
706: filelist
707: BEGIN @ dup
708: WHILE >r r@ 1 cells + count compare 0=
709: IF rdrop 2drop true EXIT THEN
710: r>
711: REPEAT
712: 2drop drop false ;
713:
714: : included
715: cr ." Including: " 2dup type ." ..."
716: 2dup add-included-file included ;
717:
718: : include bl word count included ;
719:
720: : require bl word count included ;
721:
722: [THEN]
723:
724: \ resolve structure
725:
726: : >next ; \ link to next field
727: : >tag cell+ ; \ indecates type of reference: 0: call, 1: address
728: : >taddr cell+ cell+ ;
729: : >ghost 3 cells + ;
730: : >file 4 cells + ;
731: : >line 5 cells + ;
732:
733: : refered ( ghost tag -- )
734: \G creates a resolve structure
735: swap >r here r@ >link @ , r@ >link ! ( tag ) ,
736: T here aligned H , r> drop last-header-ghost @ ,
737: loadfile , sourceline# ,
738: ;
739:
740: Defer resolve-warning
741:
742: : reswarn-test ( ghost res-struct -- ghost res-struct )
743: over cr ." Resolving " >ghostname type dup ." in " >ghost @ >ghostname type ;
744:
745: : reswarn-forward ( ghost res-struct -- ghost res-struct )
746: over warnhead >ghostname type dup ." is referenced in "
747: >ghost @ >ghostname type ;
748:
749: \ ' reswarn-test IS resolve-warning
750:
751: \ resolve 14oct92py
752:
753: : resolve-loop ( ghost tcfa -- ghost tcfa )
754: >r dup >link
755: BEGIN @ dup WHILE
756: resolve-warning
757: r@ over >taddr @
758: 2 pick >tag @
759: IF addr-resolve
760: ELSE colon-resolve
761: THEN
762: REPEAT drop r> ;
763:
764: \ : resolve-loop ( ghost tcfa -- ghost tcfa )
765: \ >r dup >link @
766: \ BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
767:
768: \ exists 9may93jaw
769:
770: Variable TWarnings
771: TWarnings on
772: Variable Exists-Warnings
773: Exists-Warnings on
774:
775: : exists ( ghost tcfa -- )
776: over GhostNames
777: BEGIN @ dup
778: WHILE 2dup cell+ @ =
779: UNTIL
780: 2 cells + count
781: TWarnings @ Exists-Warnings @ and
782: IF warnhead type ." exists"
783: ELSE 2drop THEN
784: drop swap >link !
785: ELSE true abort" CROSS: Ghostnames inconsistent "
786: THEN ;
787:
788: : resolve ( ghost tcfa -- )
789: \ resolve referencies to ghost with tcfa
790: over forward? 0= IF exists EXIT THEN
791: resolve-loop over >link ! <res> swap >magic !
792: ['] noop IS resolve-warning
793: ;
794:
795: \ gexecute ghost, 01nov92py
796:
797: : is-forward ( ghost -- )
798: \ >link dup @ there rot ! T A, H ;
799: 0 refered -1 colon, ;
800:
801: : is-resolved ( ghost -- )
802: >link @ colon, ; \ compile-call
803:
804: : gexecute ( ghost -- )
805: dup @ <fwd> = IF is-forward ELSE is-resolved THEN ;
806:
807: : addr, ( ghost -- )
808: dup @ <fwd> = IF 1 refered 0 T a, H ELSE >link @ T a, H THEN ;
809:
810: \ !! : ghost, ghost gexecute ;
811:
812: \ .unresolved 11may93jaw
813:
814: variable ResolveFlag
815:
816: \ ?touched 11may93jaw
817:
818: : ?touched ( ghost -- flag ) dup forward? swap >link @
819: 0 <> and ;
820:
821: : .forwarddefs ( ghost -- )
822: ." appeared in:"
823: >link
824: BEGIN @ dup
825: WHILE cr 5 spaces
826: dup >ghost @ >ghostname type
827: ." file " dup >file @ ?dup IF count type ELSE ." CON" THEN
828: ." line " dup >line @ .dec
829: REPEAT
830: drop ;
831:
832: : ?resolved ( ghostname -- )
833: dup cell+ @ ?touched
834: IF dup
835: cell+ cell+ count cr type ResolveFlag on
836: cell+ @ .forwarddefs
837: ELSE drop
838: THEN ;
839:
840: >MINIMAL
841: : .unresolved ( -- )
842: ResolveFlag off cr ." Unresolved: "
843: Ghostnames
844: BEGIN @ dup
845: WHILE dup ?resolved
846: REPEAT drop ResolveFlag @
847: IF
848: -1 abort" Unresolved words!"
849: ELSE
850: ." Nothing!"
851: THEN
852: cr ;
853:
854: : .stats
855: base @ >r decimal
856: cr ." named Headers: " headers-named @ .
857: r> base ! ;
858:
859: >CROSS
860: \ Header states 12dec92py
861:
862: : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
863:
864: VARIABLE ^imm
865:
866: >TARGET
867: : immediate 40 flag!
868: ^imm @ @ dup <imm> = IF drop EXIT THEN
869: <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
870: <imm> ^imm @ ! ;
871: : restrict 20 flag! ;
872:
873: : isdoer <do:> last-header-ghost @ >magic ! ;
874: >CROSS
875:
876: \ ALIAS2 ansforth conform alias 9may93jaw
877:
878: : ALIAS2 create here 0 , DOES> @ execute ;
879: \ usage:
880: \ ' <name> alias2 bla !
881:
882: \ Target Header Creation 01nov92py
883:
884: >TARGET
885: : string, ( addr count -- )
886: dup T c, H bounds ?DO I c@ T c, H LOOP ;
887: : name, ( "name" -- ) bl word count T string, cfalign H ;
888: : view, ( -- ) ( dummy ) ;
889: >CROSS
890:
891: \ Target Document Creation (goes to crossdoc.fd) 05jul95py
892:
893: s" doc/crossdoc.fd" r/w create-file throw value doc-file-id
894: \ contains the file-id of the documentation file
895:
896: : T-\G ( -- )
897: source >in @ /string doc-file-id write-line throw
898: postpone \ ;
899:
900: Variable to-doc to-doc on
901:
902: : cross-doc-entry ( -- )
903: to-doc @ tlast @ 0<> and \ not an anonymous (i.e. noname) header
904: IF
905: s" " doc-file-id write-line throw
906: s" make-doc " doc-file-id write-file throw
907: tlast @ >image count $1F and doc-file-id write-file throw
908: >in @
909: [char] ( parse 2drop
910: [char] ) parse doc-file-id write-file throw
911: s" )" doc-file-id write-file throw
912: [char] \ parse 2drop
913: T-\G
914: >in !
915: THEN ;
916:
917: \ Target TAGS creation
918:
919: s" kernel.TAGS" r/w create-file throw value tag-file-id
920: \ contains the file-id of the tags file
921:
922: Create tag-beg 2 c, 7F c, bl c,
923: Create tag-end 2 c, bl c, 01 c,
924: Create tag-bof 1 c, 0C c,
925:
926: 2variable last-loadfilename 0 0 last-loadfilename 2!
927:
928: : put-load-file-name ( -- )
929: loadfilename 2@ last-loadfilename 2@ d<>
930: IF
931: tag-bof count tag-file-id write-line throw
932: sourcefilename 2dup
933: tag-file-id write-file throw
934: last-loadfilename 2!
935: s" ,0" tag-file-id write-line throw
936: THEN ;
937:
938: : cross-tag-entry ( -- )
939: tlast @ 0<> \ not an anonymous (i.e. noname) header
940: IF
941: put-load-file-name
942: source >in @ min tag-file-id write-file throw
943: tag-beg count tag-file-id write-file throw
944: tlast @ >image count $1F and tag-file-id write-file throw
945: tag-end count tag-file-id write-file throw
946: base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw
947: \ >in @ 0 <# #s [char] , hold #> tag-file-id write-line throw
948: s" ,0" tag-file-id write-line throw
949: base !
950: THEN ;
951:
952: \ Check for words
953:
954: Defer skip? ' false IS skip?
955:
956: : defined? ( -- flag ) \ name
957: ghost forward? 0= ;
958:
959: : needed? ( -- flag ) \ name
960: \G returns a false flag when
961: \G a word is not defined
962: \G a forward reference exists
963: \G so the definition is not skipped!
964: bl word gfind
965: IF dup forward?
966: nip
967: 0=
968: ELSE drop true THEN ;
969:
970: : doer? ( -- flag ) \ name
971: ghost >magic @ <do:> = ;
972:
973: : skip-defs ( -- )
974: BEGIN refill WHILE source -trailing nip 0= UNTIL THEN ;
975:
976: \ Target header creation
977:
978:
979: VARIABLE CreateFlag CreateFlag off
980:
981: : 0.r ( n1 n2 -- ) 0 swap <# 0 ?DO # LOOP #> type ;
982: : .sym
983: bounds
984: DO I c@ dup
985: CASE '/ OF drop ." \/" ENDOF
986: '\ OF drop ." \\" ENDOF
987: dup OF emit ENDOF
988: ENDCASE
989: LOOP ;
990:
991: : (Theader ( "name" -- ghost )
992: \ >in @ bl word count type 2 spaces >in !
993: \ wordheaders will always be compiled to rom
994: switchrom
995: T align H view,
996: tlast @ dup 0> IF T 1 cells - THEN A, H there tlast !
997: 1 headers-named +! \ Statistic
998: >in @ T name, H >in ! T here H tlastcfa !
999: \ Symbol table
1000: \ >in @ cr ." sym:s/CFA=" there 4 0.r ." /" bl word count .sym ." /g" cr >in !
1001: CreateFlag @ IF
1002: >in @ alias2 swap >in ! \ create alias in target
1003: >in @ ghost swap >in !
1004: swap also ghosts ' previous swap ! \ tick ghost and store in alias
1005: CreateFlag off
1006: ELSE ghost THEN
1007: dup Last-Header-Ghost !
1008: dup >magic ^imm ! \ a pointer for immediate
1009: Already @ IF dup >end tdoes !
1010: ELSE 0 tdoes ! THEN
1011: 80 flag!
1012: cross-doc-entry cross-tag-entry ;
1013:
1014: VARIABLE ;Resolve 1 cells allot
1015: \ this is the resolver information from ":"
1016: \ resolving is done by ";"
1017:
1018: : Theader ( "name" -- ghost )
1019: (THeader dup there resolve 0 ;Resolve ! ;
1020:
1021: >TARGET
1022: : Alias ( cfa -- ) \ name
1023: >in @ skip? IF 2drop EXIT THEN >in !
1024: dup 0< s" prims" T $has? H 0= and
1025: IF
1026: .sourcepos ." needs prim: " >in @ bl word count type >in ! cr
1027: THEN
1028: (THeader over resolve T A, H 80 flag! ;
1029: : Alias: ( cfa -- ) \ name
1030: >in @ skip? IF 2drop EXIT THEN >in !
1031: dup 0< s" prims" T $has? H 0= and
1032: IF
1033: .sourcepos ." needs doer: " >in @ bl word count type >in ! cr
1034: THEN
1035: ghost tuck swap resolve <do:> swap >magic ! ;
1036: >CROSS
1037:
1038: \ Conditionals and Comments 11may93jaw
1039:
1040: : ;Cond
1041: postpone ;
1042: swap ! ; immediate
1043:
1044: : Cond: ( -- ) \ name {code } ;
1045: atonce on
1046: ghost
1047: >exec
1048: :NONAME ;
1049:
1050: : restrict? ( -- )
1051: \ aborts on interprete state - ae
1052: state @ 0= ABORT" CROSS: Restricted" ;
1053:
1054: : Comment ( -- )
1055: >in @ atonce on ghost swap >in ! ' swap >exec ! ;
1056:
1057: Comment ( Comment \
1058:
1059: \ compile 10may93jaw
1060:
1061: : compile ( -- ) \ name
1062: restrict?
1063: bl word gfind dup 0= ABORT" CROSS: Can't compile "
1064: 0> ( immediate? )
1065: IF >exec @ compile,
1066: ELSE postpone literal postpone gexecute THEN ;
1067: immediate
1068:
1069: : [G']
1070: \G ticks a ghost and returns its address
1071: bl word gfind 0= ABORT" CROSS: Ghost don't exists"
1072: state @
1073: IF postpone literal
1074: THEN ; immediate
1075:
1076: : ghost>cfa
1077: dup forward? ABORT" CROSS: forward " >link @ ;
1078:
1079: >TARGET
1080:
1081: : ' ( -- cfa )
1082: \ returns the target-cfa of a ghost
1083: bl word gfind 0= ABORT" CROSS: Ghost don't exists"
1084: ghost>cfa ;
1085:
1086: Cond: ['] T ' H alit, ;Cond
1087:
1088: >CROSS
1089:
1090: : [T']
1091: \ returns the target-cfa of a ghost, or compiles it as literal
1092: postpone [G'] state @ IF postpone ghost>cfa ELSE ghost>cfa THEN ; immediate
1093:
1094: \ \ threading modell 13dec92py
1095: \ modularized 14jun97jaw
1096:
1097: : fillcfa ( usedcells -- )
1098: T cells H xt>body swap - 0 ?DO 0 T c, H LOOP ;
1099:
1100: : (>body) ( cfa -- pfa ) xt>body + ; ' (>body) T IS >body H
1101:
1102: : (doer,) ( ghost -- ) ]comp gexecute comp[ 1 fillcfa ; ' (doer,) IS doer,
1103:
1104: : (docol,) ( -- ) [G'] :docol doer, ; ' (docol,) IS docol,
1105:
1106: : (doprim,) ( -- )
1107: there xt>body + ca>native T a, H 1 fillcfa ; ' (doprim,) IS doprim,
1108:
1109: : (doeshandler,) ( -- )
1110: T cfalign H compile :doesjump T 0 , H ; ' (doeshandler,) IS doeshandler,
1111:
1112: : (dodoes,) ( does-action-ghost -- )
1113: ]comp [G'] :dodoes gexecute comp[
1114: addr,
1115: T here H tcell - reloff 2 fillcfa ; ' (dodoes,) IS dodoes,
1116:
1117: : (lit,) ( n -- ) compile lit T , H ; ' (lit,) IS lit,
1118:
1119: : (alit,) ( n -- ) lit, T here cell - H relon ; ' (alit,) IS alit,
1120:
1121: : (fini,) compile ;s ; ' (fini,) IS fini,
1122:
1123: [IFUNDEF] (code)
1124: Defer (code)
1125: Defer (end-code)
1126: [THEN]
1127:
1128: >TARGET
1129: : Code
1130: defempty?
1131: (THeader there resolve
1132: [ T e? prims H 0= [IF] T e? ITC H [ELSE] true [THEN] ] [IF]
1133: doprim,
1134: [THEN]
1135: depth (code) ;
1136:
1137: : Code:
1138: defempty?
1139: ghost dup there ca>native resolve <do:> swap >magic !
1140: depth (code) ;
1141:
1142: : end-code
1143: (end-code)
1144: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
1145: ELSE true ABORT" CROSS: Stack empty" THEN
1146: ;
1147:
1148: Cond: chars ;Cond
1149:
1150: >CROSS
1151:
1152: \ tLiteral 12dec92py
1153:
1154: >TARGET
1155: Cond: \G T-\G ;Cond
1156:
1157: Cond: Literal ( n -- ) restrict? lit, ;Cond
1158: Cond: ALiteral ( n -- ) restrict? alit, ;Cond
1159:
1160: : Char ( "<char>" -- ) bl word char+ c@ ;
1161: Cond: [Char] ( "<char>" -- ) restrict? Char lit, ;Cond
1162:
1163: \ some special literals 27jan97jaw
1164:
1165: \ !! Known Bug: Special Literals and plug-ins work only correct
1166: \ on 16 and 32 Bit Targets and 32 Bit Hosts!
1167:
1168: Cond: MAXU
1169: restrict?
1170: tcell 1 cells u>
1171: IF compile lit tcell 0 ?DO FF T c, H LOOP
1172: ELSE $ffffffff lit, THEN
1173: ;Cond
1174:
1175: Cond: MINI
1176: restrict?
1177: tcell 1 cells u>
1178: IF compile lit bigendian
1179: IF 80 T c, H tcell 1 ?DO 0 T c, H LOOP
1180: ELSE tcell 1 ?DO 0 T c, H LOOP 80 T c, H
1181: THEN
1182: ELSE tcell 2 = IF $8000 ELSE $80000000 THEN lit, THEN
1183: ;Cond
1184:
1185: Cond: MAXI
1186: restrict?
1187: tcell 1 cells u>
1188: IF compile lit bigendian
1189: IF 7F T c, H tcell 1 ?DO FF T c, H LOOP
1190: ELSE tcell 1 ?DO FF T c, H LOOP 7F T c, H
1191: THEN
1192: ELSE tcell 2 = IF $7fff ELSE $7fffffff THEN lit, THEN
1193: ;Cond
1194:
1195: >CROSS
1196: \ Target compiling loop 12dec92py
1197: \ ">tib trick thrown out 10may93jaw
1198: \ number? defined at the top 11may93jaw
1199:
1200: \ compiled word might leave items on stack!
1201: : tcom ( in name -- )
1202: gfind ?dup IF 0> IF nip >exec @ execute
1203: ELSE nip gexecute THEN EXIT THEN
1204: number? dup IF 0> IF swap lit, THEN lit, drop
1205: ELSE 2drop >in !
1206: ghost gexecute THEN ;
1207:
1208: >TARGET
1209: \ : ; DOES> 13dec92py
1210: \ ] 9may93py/jaw
1211:
1212: : ] state on
1213: BEGIN
1214: BEGIN >in @ bl word
1215: dup c@ 0= WHILE 2drop refill 0=
1216: ABORT" CROSS: End of file while target compiling"
1217: REPEAT
1218: tcom
1219: state @
1220: 0=
1221: UNTIL ;
1222:
1223: \ by the way: defining a second interpreter (a compiler-)loop
1224: \ is not allowed if a system should be ans conform
1225:
1226: : : ( -- colon-sys ) \ Name
1227: defempty?
1228: constflag off \ don't let this flag work over colon defs
1229: \ just to go sure nothing unwanted happens
1230: >in @ skip? IF drop skip-defs EXIT THEN >in !
1231: (THeader ;Resolve ! there ;Resolve cell+ !
1232: docol, ]comp depth T ] H ;
1233:
1234: : :noname ( -- colon-sys )
1235: T cfalign H there docol, 0 ;Resolve ! depth T ] H ;
1236:
1237: Cond: EXIT ( -- ) restrict? compile ;S ;Cond
1238:
1239: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
1240:
1241: >CROSS
1242: : LastXT ;Resolve @ 0= abort" CROSS: no definition for LastXT"
1243: ;Resolve cell+ @ ;
1244:
1245: >TARGET
1246:
1247: Cond: recurse ( -- ) Last-Ghost @ gexecute ;Cond
1248:
1249: Cond: ; ( -- ) restrict?
1250: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
1251: ELSE true ABORT" CROSS: Stack empty" THEN
1252: fini,
1253: comp[
1254: state off
1255: ;Resolve @
1256: IF ;Resolve @ ;Resolve cell+ @ resolve THEN
1257: ;Cond
1258: Cond: [ restrict? state off ;Cond
1259:
1260: >CROSS
1261: : !does ( does-action -- )
1262: \ !! zusammenziehen und dodoes, machen!
1263: tlastcfa @ dup there >r tdp ! compile :dodoes r> tdp ! T cell+ ! H ;
1264: \ !! geht so nicht, da dodoes, ghost will!
1265: \ tlastcfa @ >tempdp dodoes, tempdp> ;
1266:
1267: >TARGET
1268: Cond: DOES> restrict?
1269: compile (does>) doeshandler,
1270: \ resolve words made by builders
1271: tdoes @ ?dup IF @ T here H resolve THEN
1272: ;Cond
1273: : DOES> switchrom doeshandler, T here H !does depth T ] H ;
1274:
1275: >CROSS
1276: \ Creation 01nov92py
1277:
1278: \ Builder 11may93jaw
1279:
1280: : Builder ( Create-xt do:-xt "name" -- )
1281: \ builds up a builder in current vocabulary
1282: \ create-xt is executed when word is interpreted
1283: \ do:-xt is executet when the created word from builder is executed
1284: \ for do:-xt an additional entry after the normal ghost-enrys is used
1285:
1286: >in @ alias2 swap dup >in ! >r >r
1287: Make-Ghost rot swap >exec ! ,
1288: r> r> >in !
1289: also ghosts ' previous swap ! ;
1290: \ DOES> dup >exec @ execute ;
1291:
1292: : gdoes, ( ghost -- )
1293: \ makes the codefield for a word that is built
1294: >end @ dup forward? 0=
1295: IF
1296: dup >magic @ <do:> =
1297: IF doer, EXIT THEN
1298: THEN
1299: \ compile :dodoes gexecute
1300: \ T here H tcell - reloff
1301: dodoes,
1302: ;
1303:
1304: : TCreate ( <name> -- )
1305: executed-ghost @
1306: CreateFlag on
1307: create-forward-warn
1308: IF ['] reswarn-forward IS resolve-warning THEN
1309: Theader >r dup gdoes,
1310: \ stores execution symantic in the built word
1311: >end @ >exec @ r> >exec ! ;
1312:
1313: : RTCreate ( <name> -- )
1314: \ creates a new word with code-field in ram
1315: executed-ghost @
1316: CreateFlag on
1317: create-forward-warn
1318: IF ['] reswarn-forward IS resolve-warning THEN
1319: \ make Alias
1320: (THeader there 0 T a, H 80 flag! ( S executed-ghost new-ghost )
1321: \ store poiter to code-field
1322: switchram T cfalign H
1323: there swap T ! H
1324: there tlastcfa !
1325: dup there resolve 0 ;Resolve !
1326: >r dup gdoes,
1327: >end @ >exec @ r> >exec ! ;
1328:
1329: : Build: ( -- [xt] [colon-sys] )
1330: :noname postpone TCreate ;
1331:
1332: : BuildSmart: ( -- [xt] [colon-sys] )
1333: :noname
1334: [ T has? rom H [IF] ]
1335: postpone RTCreate
1336: [ [ELSE] ]
1337: postpone TCreate
1338: [ [THEN] ] ;
1339:
1340: : gdoes> ( ghost -- addr flag )
1341: executed-ghost @
1342: state @ IF gexecute true EXIT THEN
1343: >link @ T >body H false ;
1344:
1345: \ DO: ;DO 11may93jaw
1346: \ changed to ?EXIT 10may93jaw
1347:
1348: : DO: ( -- addr [xt] [colon-sys] )
1349: here ghostheader
1350: :noname postpone gdoes> postpone ?EXIT ;
1351:
1352: : by: ( -- addr [xt] [colon-sys] ) \ name
1353: ghost
1354: :noname postpone gdoes> postpone ?EXIT ;
1355:
1356: : ;DO ( addr [xt] [colon-sys] -- addr )
1357: postpone ; ( S addr xt )
1358: over >exec ! ; immediate
1359:
1360: : by ( -- addr ) \ Name
1361: ghost >end @ ;
1362:
1363: >TARGET
1364: \ Variables and Constants 05dec92py
1365:
1366: Build: ( n -- ) ;
1367: by: :docon ( ghost -- n ) T @ H ;DO
1368: Builder (Constant)
1369:
1370: Build: ( n -- ) T , H ;
1371: by (Constant)
1372: Builder Constant
1373:
1374: Build: ( n -- ) T A, H ;
1375: by (Constant)
1376: Builder AConstant
1377:
1378: Build: ( d -- ) T , , H ;
1379: DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO
1380: Builder 2Constant
1381:
1382: BuildSmart: ;
1383: by: :dovar ( ghost -- addr ) ;DO
1384: Builder Create
1385:
1386: T has? rom H [IF]
1387: Build: ( n -- ) T here 0 , H switchram T align here swap ! 0 , H ( switchrom ) ;
1388: by (Constant)
1389: Builder Variable
1390: [ELSE]
1391: Build: T 0 , H ;
1392: by Create
1393: Builder Variable
1394: [THEN]
1395:
1396: T has? rom H [IF]
1397: Build: ( n -- ) T here 0 , H switchram T align here swap ! 0 , H ( switchrom ) ;
1398: by (Constant)
1399: Builder AVariable
1400: [ELSE]
1401: Build: T 0 A, H ;
1402: by Create
1403: Builder AVariable
1404: [THEN]
1405:
1406: \ User variables 04may94py
1407:
1408: >CROSS
1409: Variable tup 0 tup !
1410: Variable tudp 0 tudp !
1411: : u, ( n -- udp )
1412: tup @ tudp @ + T ! H
1413: tudp @ dup T cell+ H tudp ! ;
1414: : au, ( n -- udp )
1415: tup @ tudp @ + T A! H
1416: tudp @ dup T cell+ H tudp ! ;
1417: >TARGET
1418:
1419: Build: T 0 u, , H ;
1420: by: :douser ( ghost -- up-addr ) T @ H tup @ + ;DO
1421: Builder User
1422:
1423: Build: T 0 u, , 0 u, drop H ;
1424: by User
1425: Builder 2User
1426:
1427: Build: T 0 au, , H ;
1428: by User
1429: Builder AUser
1430:
1431: BuildSmart: T , H ;
1432: by (Constant)
1433: Builder Value
1434:
1435: BuildSmart: T A, H ;
1436: by (Constant)
1437: Builder AValue
1438:
1439: BuildSmart: ( -- ) [T'] noop T A, H ;
1440: by: :dodefer ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1441: Builder Defer
1442:
1443: BuildSmart: ( inter comp -- ) swap T immediate A, A, H ;
1444: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1445: Builder interpret/compile:
1446:
1447: \ Sturctures 23feb95py
1448:
1449: >CROSS
1450: : nalign ( addr1 n -- addr2 )
1451: \ addr2 is the aligned version of addr1 wrt the alignment size n
1452: 1- tuck + swap invert and ;
1453: >TARGET
1454:
1455: Build: ;
1456: by: :dofield T @ H + ;DO
1457: Builder (Field)
1458:
1459: Build: ( align1 offset1 align size "name" -- align2 offset2 )
1460: rot dup T , H ( align1 align size offset1 )
1461: + >r nalign r> ;
1462: by (Field)
1463: Builder Field
1464:
1465: : struct T 1 chars 0 H ;
1466: : end-struct T 2Constant H ;
1467:
1468: : cell% ( n -- size align )
1469: T 1 cells H dup ;
1470:
1471: \ ' 2Constant Alias2 end-struct
1472: \ 0 1 T Chars H 2Constant struct
1473:
1474: 0 [IF]
1475:
1476: \ structural conditionals 17dec92py
1477:
1478: >CROSS
1479: : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
1480: : sys? ( sys -- sys ) dup 0= ?struc ;
1481: : >mark ( -- sys ) T here ( dup ." M" hex. ) 0 , H ;
1482:
1483: : branchoffset ( src dest -- ) - ;
1484: : >resolve ( sys -- ) T here ( dup ." >" hex. ) over branchoffset swap ! H ;
1485: : <resolve ( sys -- ) T here ( dup ." <" hex. ) branchoffset , H ;
1486: >TARGET
1487:
1488: \ Structural Conditionals 12dec92py
1489:
1490: Cond: BUT restrict? sys? swap ;Cond
1491: Cond: YET restrict? sys? dup ;Cond
1492:
1493: >CROSS
1494: Variable tleavings
1495: >TARGET
1496:
1497: Cond: DONE ( addr -- ) restrict? tleavings @
1498: BEGIN 2dup u> 0= WHILE dup T @ H swap >resolve REPEAT
1499: tleavings ! drop ;Cond
1500:
1501: >CROSS
1502: : (leave T here H tleavings @ T , H tleavings ! ;
1503: >TARGET
1504:
1505: Cond: LEAVE restrict? compile branch (leave ;Cond
1506: Cond: ?LEAVE restrict? compile 0= compile ?branch (leave ;Cond
1507:
1508: \ Structural Conditionals 12dec92py
1509:
1510: Cond: AHEAD restrict? compile branch >mark ;Cond
1511: Cond: IF restrict? compile ?branch >mark ;Cond
1512: Cond: THEN restrict? sys? branchto, dup T @ H ?struc >resolve ;Cond
1513: Cond: ELSE restrict? sys? compile AHEAD swap compile THEN ;Cond
1514:
1515: Cond: BEGIN restrict? T branchto, here ( dup ." B" hex. ) H ;Cond
1516: Cond: WHILE restrict? sys? compile IF swap ;Cond
1517: Cond: AGAIN restrict? sys? compile branch <resolve ;Cond
1518: Cond: UNTIL restrict? sys? compile ?branch <resolve ;Cond
1519: Cond: REPEAT restrict? over 0= ?struc compile AGAIN compile THEN ;Cond
1520:
1521: Cond: CASE restrict? 0 ;Cond
1522: Cond: OF restrict? 1+ >r compile over compile =
1523: compile IF compile drop r> ;Cond
1524: Cond: ENDOF restrict? >r compile ELSE r> ;Cond
1525: Cond: ENDCASE restrict? compile drop 0 ?DO compile THEN LOOP ;Cond
1526:
1527: \ Structural Conditionals 12dec92py
1528:
1529: Cond: DO restrict? compile (do) T here H ;Cond
1530: Cond: ?DO restrict? compile (?do) T (leave here H ;Cond
1531: Cond: FOR restrict? compile (for) T here H ;Cond
1532:
1533: >CROSS
1534: : loop] dup <resolve tcell - compile DONE compile unloop ;
1535: >TARGET
1536:
1537: Cond: LOOP restrict? sys? compile (loop) loop] ;Cond
1538: Cond: +LOOP restrict? sys? compile (+loop) loop] ;Cond
1539: Cond: NEXT restrict? sys? compile (next) loop] ;Cond
1540:
1541: [ELSE]
1542:
1543: \ structural conditionals 17dec92py
1544:
1545: >CROSS
1546: : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
1547: : sys? ( sys -- sys ) dup 0= ?struc ;
1548: : >mark ( -- sys ) T here ( dup ." M" hex. ) 0 , H ;
1549:
1550: : branchoffset ( src dest -- ) - ;
1551:
1552: : >resolve ( sys -- ) T here ( dup ." >" hex. ) over branchoffset swap ! H ;
1553:
1554: : <resolve ( sys -- ) T here ( dup ." <" hex. ) branchoffset , H ;
1555:
1556: :noname compile branch T here branchoffset , H ; IS branch,
1557: :noname compile ?branch T here branchoffset , H ; IS ?branch,
1558: :noname compile branch T here 0 , H ; IS branchmark,
1559: :noname compile ?branch T here 0 , H ; IS ?branchmark,
1560: :noname dup T @ H ?struc T here over branchoffset swap ! H ; IS branchtoresolve,
1561: :noname branchto, T here H ; IS branchtomark,
1562:
1563: >TARGET
1564:
1565: \ Structural Conditionals 12dec92py
1566:
1567: Cond: BUT restrict? sys? swap ;Cond
1568: Cond: YET restrict? sys? dup ;Cond
1569:
1570: 1 [IF]
1571: >CROSS
1572: Variable tleavings
1573: >TARGET
1574:
1575: Cond: DONE ( addr -- ) restrict? tleavings @
1576: BEGIN 2dup u> 0= WHILE dup T @ H swap >resolve REPEAT
1577: tleavings ! drop ;Cond
1578:
1579: >CROSS
1580: : (leave T here H tleavings @ T , H tleavings ! ;
1581: >TARGET
1582:
1583: Cond: LEAVE restrict? compile branch (leave ;Cond
1584: Cond: ?LEAVE restrict? compile 0= compile ?branch (leave ;Cond
1585:
1586: [ELSE]
1587: \ !! This is WIP
1588: \ The problem is (?DO)!
1589: \ perhaps we need a plug-in for (?DO)
1590:
1591: >CROSS
1592: Variable tleavings 0 tleavings !
1593: >TARGET
1594:
1595: Cond: DONE ( addr -- )
1596: restrict? tleavings @
1597: BEGIN dup
1598: WHILE >r dup r@ cell+ @ \ address of branch
1599: u> 0= \ lower than DO?
1600: WHILE r@ 2 cells + @ \ branch token
1601: branchtoresolve,
1602: r@ @ r> free throw
1603: REPEAT drop r>
1604: THEN
1605: tleavings ! drop ;Cond
1606:
1607: >CROSS
1608: : (leave ( branchtoken -- )
1609: 3 cells allocate throw >r
1610: T here H r@ cell+ !
1611: r@ 2 cells + !
1612: tleavings @ r@ !
1613: r> tleavings ! ;
1614: >TARGET
1615:
1616: Cond: LEAVE restrict? branchmark, (leave ;Cond
1617: Cond: ?LEAVE restrict? compile 0= ?branchmark, (leave ;Cond
1618:
1619: [THEN]
1620:
1621: \ Structural Conditionals 12dec92py
1622:
1623: >TARGET
1624: Cond: AHEAD restrict? branchmark, ;Cond
1625: Cond: IF restrict? ?branchmark, ;Cond
1626: Cond: THEN restrict? sys? branchto, branchtoresolve, ;Cond
1627: Cond: ELSE restrict? sys? compile AHEAD swap compile THEN ;Cond
1628:
1629: Cond: BEGIN restrict? branchtomark, ;Cond
1630: Cond: WHILE restrict? sys? compile IF swap ;Cond
1631: Cond: AGAIN restrict? sys? branch, ;Cond
1632: Cond: UNTIL restrict? sys? ?branch, ;Cond
1633: Cond: REPEAT restrict? over 0= ?struc compile AGAIN compile THEN ;Cond
1634:
1635: Cond: CASE restrict? 0 ;Cond
1636: Cond: OF restrict? 1+ >r compile over compile =
1637: compile IF compile drop r> ;Cond
1638: Cond: ENDOF restrict? >r compile ELSE r> ;Cond
1639: Cond: ENDCASE restrict? compile drop 0 ?DO compile THEN LOOP ;Cond
1640:
1641: \ Structural Conditionals 12dec92py
1642:
1643: Cond: DO restrict? compile (do) T here H ;Cond
1644: Cond: ?DO restrict? compile (?do) T (leave here H ;Cond
1645: Cond: FOR restrict? compile (for) T here H ;Cond
1646:
1647: >CROSS
1648: : loop] branchto, dup <resolve tcell - compile DONE compile unloop ;
1649: >TARGET
1650:
1651: Cond: LOOP restrict? sys? compile (loop) loop] ;Cond
1652: Cond: +LOOP restrict? sys? compile (+loop) loop] ;Cond
1653: Cond: NEXT restrict? sys? compile (next) loop] ;Cond
1654:
1655: [THEN]
1656:
1657: \ String words 23feb93py
1658:
1659: : ," [char] " parse T string, align H ;
1660:
1661: Cond: ." restrict? compile (.") T ," H ;Cond
1662: Cond: S" restrict? compile (S") T ," H ;Cond
1663: Cond: ABORT" restrict? compile (ABORT") T ," H ;Cond
1664:
1665: Cond: IS T ' >body H compile ALiteral compile ! ;Cond
1666: : IS T ' >body ! H ;
1667: Cond: TO T ' >body H compile ALiteral compile ! ;Cond
1668: : TO T ' >body ! H ;
1669:
1670: Cond: defers T ' >body @ compile, H ;Cond
1671: : on T -1 swap ! H ;
1672: : off T 0 swap ! H ;
1673:
1674: \ LINKED ERR" ENV" 2ENV" 18may93jaw
1675:
1676: \ linked list primitive
1677: : linked T here over @ A, swap ! H ;
1678: : chained T linked A, H ;
1679:
1680: : err" s" ErrLink linked" evaluate T , H
1681: [char] " parse T string, align H ;
1682:
1683: : env" [char] " parse s" EnvLink linked" evaluate
1684: T string, align , H ;
1685:
1686: : 2env" [char] " parse s" EnvLink linked" evaluate
1687: here >r T string, align , , H
1688: r> dup T c@ H 80 and swap T c! H ;
1689:
1690: \ compile must be last 22feb93py
1691:
1692: Cond: compile ( -- ) restrict? \ name
1693: bl word gfind dup 0= ABORT" CROSS: Can't compile"
1694: 0> IF gexecute
1695: ELSE dup >magic @ <imm> =
1696: IF gexecute
1697: ELSE compile (compile) gexecute THEN THEN ;Cond
1698:
1699: Cond: postpone ( -- ) restrict? \ name
1700: bl word gfind dup 0= ABORT" CROSS: Can't compile"
1701: 0> IF gexecute
1702: ELSE dup >magic @ <imm> =
1703: IF gexecute
1704: ELSE compile (compile) gexecute THEN THEN ;Cond
1705:
1706: >MINIMAL
1707: also minimal
1708: \ Usefull words 13feb93py
1709:
1710: : KB 400 * ;
1711:
1712: \ define new [IFDEF] and [IFUNDEF] 20may93jaw
1713:
1714: : defined? defined? ;
1715: : needed? needed? ;
1716: : doer? doer? ;
1717:
1718: \ we want to use IFDEF on compiler directives (e.g. E?) in the source, too
1719:
1720: : directive?
1721: bl word count [ ' target >wordlist ] aliteral search-wordlist
1722: dup IF nip THEN ;
1723:
1724: : [IFDEF] >in @ directive? swap >in !
1725: 0= IF defined? ELSE name 2drop true THEN
1726: postpone [IF] ;
1727:
1728: : [IFUNDEF] defined? 0= postpone [IF] ;
1729:
1730: \ C: \- \+ Conditional Compiling 09jun93jaw
1731:
1732: : C: >in @ defined? 0=
1733: IF >in ! T : H
1734: ELSE drop
1735: BEGIN bl word dup c@
1736: IF count comment? s" ;" compare 0= ?EXIT
1737: ELSE refill 0= ABORT" CROSS: Out of Input while C:"
1738: THEN
1739: AGAIN
1740: THEN ;
1741:
1742: also minimal
1743:
1744: \G doesn't skip line when bit is set in debugmask
1745: : \D name evaluate debugmasksource @ and 0= IF postpone \ THEN ;
1746:
1747: \G interprets the line if word is not defined
1748: : \- defined? IF postpone \ THEN ;
1749:
1750: \G interprets the line if word is defined
1751: : \+ defined? 0= IF postpone \ THEN ;
1752:
1753: Cond: \- \- ;Cond
1754: Cond: \+ \+ ;Cond
1755: Cond: \D \D ;Cond
1756:
1757: : ?? bl word find IF execute ELSE drop 0 THEN ;
1758:
1759: : needed:
1760: \G defines ghost for words that we want to be compiled
1761: BEGIN >in @ bl word c@ WHILE >in ! ghost drop REPEAT drop ;
1762:
1763: : [IF] postpone [IF] ;
1764: : [THEN] postpone [THEN] ;
1765: : [ELSE] postpone [ELSE] ;
1766:
1767: Cond: [IF] [IF] ;Cond
1768: Cond: [IFDEF] [IFDEF] ;Cond
1769: Cond: [IFUNDEF] [IFUNDEF] ;Cond
1770: Cond: [THEN] [THEN] ;Cond
1771: Cond: [ELSE] [ELSE] ;Cond
1772:
1773: previous
1774:
1775: \ save-cross 17mar93py
1776:
1777: >CROSS
1778: Create magic s" Gforth10" here over allot swap move
1779:
1780: char 1 bigendian + tcell + magic 7 + c!
1781:
1782: : save-cross ( "image-name" "binary-name" -- )
1783: bl parse ." Saving to " 2dup type cr
1784: w/o bin create-file throw >r
1785: TNIL IF
1786: s" #! " r@ write-file throw
1787: bl parse r@ write-file throw
1788: s" -i" r@ write-file throw
1789: #lf r@ emit-file throw
1790: r@ dup file-position throw drop 8 mod 8 swap ( file-id limit index )
1791: ?do
1792: bl over emit-file throw
1793: loop
1794: drop
1795: magic 8 r@ write-file throw \ write magic
1796: ELSE
1797: bl parse 2drop
1798: THEN
1799: image @ there
1800: r@ write-file throw \ write image
1801: TNIL IF
1802: bit$ @ there 1- tcell>bit rshift 1+
1803: r@ write-file throw \ write tags
1804: THEN
1805: r> close-file throw ;
1806:
1807: : save-region ( addr len -- )
1808: bl parse w/o bin create-file throw >r
1809: swap image @ + swap r@ write-file throw
1810: r> close-file throw ;
1811:
1812: \ words that should be in minimal
1813:
1814: create s-buffer 50 chars allot
1815:
1816: >MINIMAL
1817: also minimal
1818:
1819: bigendian Constant bigendian
1820: : here there ;
1821: : >ram >ram ;
1822: : >rom >rom ;
1823: : >auto >auto ;
1824: : >tempdp >tempdp ;
1825: : tempdp> tempdp> ;
1826: : const constflag on ;
1827: : warnings name 3 = 0= twarnings ! drop ;
1828:
1829:
1830: : save-cross save-cross ;
1831: : save-region save-region ;
1832: : tdump swap >image swap dump ;
1833:
1834: also forth
1835: [IFDEF] Label : Label defempty? Label ; [THEN]
1836: [IFDEF] start-macros : start-macros defempty? start-macros ; [THEN]
1837: [IFDEF] builttag : builttag builttag ; [THEN]
1838: previous
1839:
1840: : s" [char] " parse s-buffer place s-buffer count ; \ for environment?
1841: : + + ;
1842: : 1+ 1 + ;
1843: : 2+ 2 + ;
1844: : or or ;
1845: : 1- 1- ;
1846: : - - ;
1847: : and and ;
1848: : or or ;
1849: : 2* 2* ;
1850: : * * ;
1851: : / / ;
1852: : dup dup ;
1853: : over over ;
1854: : swap swap ;
1855: : rot rot ;
1856: : drop drop ;
1857: : = = ;
1858: : 0= 0= ;
1859: : lshift lshift ;
1860: : 2/ 2/ ;
1861: : . . ;
1862:
1863: : all-words ['] false IS skip? ;
1864: : needed-words ['] needed? IS skip? ;
1865: : undef-words ['] defined? IS skip? ;
1866:
1867: : \ postpone \ ; immediate
1868: : \G T-\G ; immediate
1869: : ( postpone ( ; immediate
1870: : include bl word count included ;
1871: : require require ;
1872: : .( [char] ) parse type ;
1873: : ." [char] " parse type ;
1874: : cr cr ;
1875:
1876: : times 0 ?DO dup T c, H LOOP drop ; \ used for space table creation
1877: only forth also minimal definitions
1878:
1879: \ cross-compiler words
1880:
1881: : decimal decimal ;
1882: : hex hex ;
1883:
1884: : tudp T tudp H ;
1885: : tup T tup H ;
1886:
1887: : doc-off false T to-doc H ! ;
1888: : doc-on true T to-doc H ! ;
1889: [IFDEF] dbg : dbg dbg ; [THEN]
1890:
1891: minimal
1892:
1893: \ for debugging...
1894: : order order ;
1895: : hwords words ;
1896: : words also ghosts words previous ;
1897: : .s .s ;
1898: : bye bye ;
1899:
1900: \ turnkey direction
1901: : H forth ; immediate
1902: : T minimal ; immediate
1903: : G ghosts ; immediate
1904:
1905: : turnkey 0 set-order also Target definitions
1906: also Minimal also ;
1907:
1908: \ these ones are pefered:
1909:
1910: : lock turnkey ;
1911: : unlock forth also cross ;
1912:
1913: : [[ also unlock ;
1914: : ]] previous previous ;
1915:
1916: unlock definitions also minimal
1917: : lock lock ;
1918: lock
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