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Sun Aug 31 19:31:28 1997 UTC (26 years, 1 month ago) by
jwilke
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changes from gforth-ec:
updated cross (side-effect: no more warnings :-)
some changed other forth-files
['] can not do forward references any more
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: : .sourcepos
132: cr sourcefilename type ." :"
133: base @ decimal sourceline# . base ! ;
134:
135: : warnhead
136: \G display error-message head
137: \G perhaps with linenumber and filename
138: .sourcepos ." Warning: " ;
139:
140: : empty? depth IF .sourcepos ." Stack not empty!" THEN ;
141:
142: stack-warn [IF]
143: : defempty? empty? ;
144: [ELSE]
145: : defempty? ; immediate
146: [THEN]
147:
148:
149: \ \ GhostNames Ghosts 9may93jaw
150:
151: \ second name source to search trough list
152:
153: VARIABLE GhostNames
154: 0 GhostNames !
155:
156: : GhostName ( -- addr )
157: here GhostNames @ , GhostNames ! here 0 ,
158: bl word count
159: \ 2dup type space
160: string, \ !! cfalign ?
161: align ;
162:
163: \ Ghost Builder 06oct92py
164:
165: \ <T T> new version with temp variable 10may93jaw
166:
167: VARIABLE VocTemp
168:
169: : <T get-current VocTemp ! also Ghosts definitions ;
170: : T> previous VocTemp @ set-current ;
171:
172: hex
173: 4711 Constant <fwd> 4712 Constant <res>
174: 4713 Constant <imm> 4714 Constant <do:>
175:
176: \ iForth makes only immediate directly after create
177: \ make atonce trick! ?
178:
179: Variable atonce atonce off
180:
181: : NoExec true ABORT" CROSS: Don't execute ghost" ;
182:
183: : GhostHeader <fwd> , 0 , ['] NoExec , ;
184:
185: : >magic ; \ type of ghost
186: : >link cell+ ; \ pointer where ghost is in target, or if unresolved
187: \ points to the where we have to resolve (linked-list)
188: : >exec cell+ cell+ ; \ execution symantics (while target compiling) of ghost
189: : >end 3 cells + ; \ room for additional tags
190: \ for builder (create, variable...) words the
191: \ execution symantics of words built are placed here
192:
193: Variable executed-ghost \ last executed ghost, needed in tcreate and gdoes>
194: Variable last-ghost \ last ghost that is created
195: Variable last-header-ghost \ last ghost definitions with header
196:
197: : Make-Ghost ( "name" -- ghost )
198: >in @ GhostName swap >in !
199: <T Create atonce @ IF immediate atonce off THEN
200: here tuck swap ! ghostheader T>
201: dup last-ghost !
202: DOES> dup executed-ghost ! >exec @ execute ;
203:
204: \ ghost words 14oct92py
205: \ changed: 10may93py/jaw
206:
207: : gfind ( string -- ghost true/1 / string false )
208: \ searches for string in word-list ghosts
209: dup count [ ' ghosts >wordlist ] ALiteral search-wordlist
210: dup IF >r >body nip r> THEN ;
211:
212: : gdiscover ( xt -- ghost true | xt false )
213: GhostNames
214: BEGIN @ dup
215: WHILE 2dup
216: cell+ @ dup >magic @ <fwd> <>
217: >r >link @ = r> and
218: IF cell+ @ nip true EXIT THEN
219: REPEAT
220: drop false ;
221:
222: VARIABLE Already
223:
224: : ghost ( "name" -- ghost )
225: Already off
226: >in @ bl word gfind IF Already on nip EXIT THEN
227: drop >in ! Make-Ghost ;
228:
229: : >ghostname ( ghost -- adr len )
230: GhostNames
231: BEGIN @ dup
232: WHILE 2dup cell+ @ =
233: UNTIL nip 2 cells + count
234: ELSE 2drop true abort" CROSS: Ghostnames inconsistent"
235: THEN ;
236:
237: ' >ghostname ALIAS @name
238:
239: : forward? ( ghost -- flag )
240: >magic @ <fwd> = ;
241:
242: \ Predefined ghosts 12dec92py
243:
244: ghost 0= drop
245: ghost branch ghost ?branch 2drop
246: ghost (do) ghost (?do) 2drop
247: ghost (for) drop
248: ghost (loop) ghost (+loop) 2drop
249: ghost (next) drop
250: ghost unloop ghost ;S 2drop
251: ghost lit ghost (compile) ghost ! 2drop drop
252: ghost (does>) ghost noop 2drop
253: ghost (.") ghost (S") ghost (ABORT") 2drop drop
254: ghost ' drop
255: ghost :docol ghost :doesjump ghost :dodoes 2drop drop
256: ghost over ghost = ghost drop 2drop drop
257: ghost - drop
258:
259: \ \ Parameter for target systems 06oct92py
260:
261: \ we define it ans like...
262: wordlist Constant target-environment
263:
264: VARIABLE env-current \ save information of current dictionary to restore with environ>
265:
266: : >ENVIRON get-current env-current ! target-environment set-current ;
267: : ENVIRON> env-current @ set-current ;
268:
269: >TARGET
270:
271: : environment?
272: target-environment search-wordlist
273: IF execute true ELSE false THEN ;
274:
275: : e? name T environment? H 0= ABORT" environment variable not defined!" ;
276:
277: : has? name T environment? H IF ELSE false THEN ;
278:
279: : $has? T environment? H IF ELSE false THEN ;
280:
281: >ENVIRON
282: true Value cross
283: >TARGET
284:
285: mach-file count included hex
286:
287: >TARGET
288:
289: [IFUNDEF] has-interpreter true Value has-interpreter [THEN]
290: [IFUNDEF] itc true Value itc [THEN]
291: [IFUNDEF] has-rom false Value has-rom [THEN]
292:
293: >CROSS
294:
295: \ \ Create additional parameters 19jan95py
296:
297: T
298: NIL Constant TNIL
299: cell Constant tcell
300: cell<< Constant tcell<<
301: cell>bit Constant tcell>bit
302: bits/byte Constant tbits/byte
303: float Constant tfloat
304: 1 bits/byte lshift Constant maxbyte
305: H
306:
307: \ Variables 06oct92py
308:
309: Variable image
310: Variable tlast TNIL tlast ! \ Last name field
311: Variable tlastcfa \ Last code field
312: Variable tdoes \ Resolve does> calls
313: Variable bit$
314:
315: \ statistics 10jun97jaw
316:
317: Variable headers-named 0 headers-named !
318: Variable user-vars 0 user-vars !
319:
320: \ Memory initialisation 05dec92py
321:
322: [IFDEF] Memory \ Memory is a bigFORTH feature
323: also Memory
324: : initmem ( var len -- )
325: 2dup swap handle! >r @ r> erase ;
326: toss
327: [ELSE]
328: : initmem ( var len -- )
329: tuck allocate abort" CROSS: No memory for target"
330: ( len var adr ) dup rot !
331: ( len adr ) swap erase ;
332: [THEN]
333:
334: \ MakeKernal 12dec92py
335:
336: : makekernel ( targetsize -- targetsize )
337: bit$ over 1- tcell>bit rshift 1+ initmem
338: image over initmem ;
339:
340: >MINIMAL
341: : makekernel makekernel ;
342:
343:
344: >CROSS
345:
346: \ memregion.fs
347:
348:
349: Variable last-defined-region \ pointer to last defined region
350: Variable region-link \ linked list with all regions
351: Variable mirrored-link \ linked list for mirrored regions
352: 0 dup mirrored-link ! region-link !
353:
354:
355: : >rdp 2 cells + ;
356: : >rlen cell+ ;
357: : >rstart ;
358:
359:
360: : region ( addr len -- ) \G create a new region
361: \ check whether predefined region exists
362: save-input bl word find >r >r restore-input throw r> r> 0=
363: IF \ make region
364: drop
365: save-input create restore-input throw
366: here last-defined-region !
367: over ( startaddr ) , ( length ) , ( dp ) ,
368: region-link linked name string,
369: ELSE \ store new parameters in region
370: bl word drop
371: >body >r r@ last-defined-region !
372: r@ cell+ ! dup r@ ! r> 2 cells + !
373: THEN ;
374:
375: : borders ( region -- startaddr endaddr ) \G returns lower and upper region border
376: dup @ swap cell+ @ over + ;
377:
378: : extent ( region -- startaddr len ) \G returns the really used area
379: dup @ swap 2 cells + @ over - ;
380:
381: : area ( region -- startaddr totallen ) \G returns the total area
382: dup @ swap cell+ @ ;
383:
384: : mirrored \G mark a region as mirrored
385: mirrored-link
386: linked last-defined-region @ , ;
387:
388: : .addr
389: base @ >r hex
390: tcell 2 u>
391: IF s>d <# # # # # '. hold # # # # #> type
392: ELSE s>d <# # # # # # #> type
393: THEN r> base ! ;
394:
395: : .regions \G display region statistic
396:
397: \ we want to list the regions in the right order
398: \ so first collect all regions on stack
399: 0 region-link @
400: BEGIN dup WHILE dup @ REPEAT drop
401: BEGIN dup
402: WHILE cr 3 cells - >r
403: r@ 4 cells + count tuck type
404: 12 swap - 0 max spaces space
405: ." Start: " r@ @ dup .addr space
406: ." End: " r@ 1 cells + @ + .addr space
407: ." DP: " r> 2 cells + @ .addr
408: REPEAT drop
409: s" rom" $has? 0= ?EXIT
410: cr ." Mirrored:"
411: mirrored-link @
412: BEGIN dup
413: WHILE space dup cell+ @ 4 cells + count type @
414: REPEAT drop cr
415: ;
416:
417: \ -------- predefined regions
418:
419: 0 0 region address-space
420: \ total memory addressed and used by the target system
421:
422: 0 0 region dictionary
423: \ rom area for the compiler
424:
425: has? rom
426: [IF]
427: 0 0 region ram-dictionary mirrored
428: \ ram area for the compiler
429: [ELSE]
430: ' dictionary ALIAS ram-dictionary
431: [THEN]
432:
433: 0 0 region return-stack
434:
435: 0 0 region data-stack
436:
437: 0 0 region tib-region
438:
439: ' dictionary ALIAS rom-dictionary
440:
441:
442: : setup-target ( -- ) \G initialize targets memory space
443: s" rom" $has?
444: IF \ check for ram and rom...
445: address-space area nip
446: ram-dictionary area nip
447: rom-dictionary area nip
448: and and 0=
449: ABORT" CROSS: define address-space, rom- , ram-dictionary, with rom-support!"
450: THEN
451: address-space area nip
452: IF
453: address-space area
454: ELSE
455: dictionary area
456: THEN
457: dup 0=
458: ABORT" CROSS: define at least address-space or dictionary!!"
459: + makekernel drop ;
460:
461: \ switched tdp for rom support 03jun97jaw
462:
463: \ second value is here to store some maximal value for statistics
464: \ tempdp is also embedded here but has nothing to do with rom support
465: \ (needs switched dp)
466:
467: variable tempdp 0 , \ temporary dp for resolving
468: variable tempdp-save
469:
470: 0 [IF]
471: variable romdp 0 , \ Dictionary-Pointer for ramarea
472: variable ramdp 0 , \ Dictionary-Pointer for romarea
473:
474: \
475: variable sramdp \ start of ram-area for forth
476: variable sromdp \ start of rom-area for forth
477:
478: [THEN]
479:
480:
481: 0 value tdp
482: variable fixed \ flag: true: no automatic switching
483: \ false: switching is done automatically
484:
485: \ Switch-Policy:
486: \
487: \ a header is always compiled into rom
488: \ after a created word (create and variable) compilation goes to ram
489: \
490: \ Be careful: If you want to make the data behind create into rom
491: \ you have to put >rom before create!
492:
493: variable constflag constflag off
494:
495: : (switchram)
496: fixed @ ?EXIT has-rom 0= ?EXIT
497: ram-dictionary >rdp to tdp ;
498:
499: : switchram
500: constflag @
501: IF constflag off ELSE (switchram) THEN ;
502:
503: : switchrom
504: fixed @ ?EXIT rom-dictionary >rdp to tdp ;
505:
506: : >tempdp ( addr -- )
507: tdp tempdp-save ! tempdp to tdp tdp ! ;
508: : tempdp> ( -- )
509: tempdp-save @ to tdp ;
510:
511: : >ram fixed off (switchram) fixed on ;
512: : >rom fixed off switchrom fixed on ;
513: : >auto fixed off switchrom ;
514:
515:
516:
517: \ : romstart dup sromdp ! romdp ! ;
518: \ : ramstart dup sramdp ! ramdp ! ;
519:
520: \ default compilation goed to rom
521: \ when romable support is off, only the rom switch is used (!!)
522: >auto
523:
524: : there tdp @ ;
525:
526: >TARGET
527:
528: \ \ Target Memory Handling
529:
530: \ Byte ordering and cell size 06oct92py
531:
532: : cell+ tcell + ;
533: : cells tcell<< lshift ;
534: : chars ;
535: : char+ 1 + ;
536: : floats tfloat * ;
537:
538: >CROSS
539: : cell/ tcell<< rshift ;
540: >TARGET
541: 20 CONSTANT bl
542: \ TNIL Constant NIL
543:
544: >CROSS
545:
546: bigendian
547: [IF]
548: : S! ( n addr -- ) >r s>d r> tcell bounds swap 1-
549: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
550: : S@ ( addr -- n ) >r 0 0 r> tcell bounds
551: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ;
552: [ELSE]
553: : S! ( n addr -- ) >r s>d r> tcell bounds
554: DO maxbyte ud/mod rot I c! LOOP 2drop ;
555: : S@ ( addr -- n ) >r 0 0 r> tcell bounds swap 1-
556: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ;
557: [THEN]
558:
559: >CROSS
560: \ Bit string manipulation 06oct92py
561: \ 9may93jaw
562: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
563: : bits ( n -- n ) chars Bittable + c@ ;
564:
565: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
566: : +bit ( addr n -- ) >bit over c@ or swap c! ;
567: : -bit ( addr n -- ) >bit invert over c@ and swap c! ;
568: : relon ( taddr -- ) bit$ @ swap cell/ +bit ;
569: : reloff ( taddr -- ) bit$ @ swap cell/ -bit ;
570:
571: \ Target memory access 06oct92py
572:
573: : align+ ( taddr -- rest )
574: tcell tuck 1- and - [ tcell 1- ] Literal and ;
575: : cfalign+ ( taddr -- rest )
576: \ see kernel.fs:cfaligned
577: /maxalign tuck 1- and - [ /maxalign 1- ] Literal and ;
578:
579: >TARGET
580: : aligned ( taddr -- ta-addr ) dup align+ + ;
581: \ assumes cell alignment granularity (as GNU C)
582:
583: : cfaligned ( taddr1 -- taddr2 )
584: \ see kernel.fs
585: dup cfalign+ + ;
586:
587: >CROSS
588: : >image ( taddr -- absaddr ) image @ + ;
589: >TARGET
590: : @ ( taddr -- w ) >image S@ ;
591: : ! ( w taddr -- ) >image S! ;
592: : c@ ( taddr -- char ) >image c@ ;
593: : c! ( char taddr -- ) >image c! ;
594: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
595: : 2! ( x1 x2 taddr -- ) T swap over ! cell+ ! H ;
596:
597: \ Target compilation primitives 06oct92py
598: \ included A! 16may93jaw
599:
600: : here ( -- there ) there ;
601: : allot ( n -- ) tdp +! ;
602: : , ( w -- ) T here H tcell T allot ! H T here drop H ;
603: : c, ( char -- ) T here 1 allot c! H ;
604: : align ( -- ) T here H align+ 0 ?DO bl T c, H LOOP ;
605: : cfalign ( -- )
606: T here H cfalign+ 0 ?DO bl T c, H LOOP ;
607:
608: : A! dup relon T ! H ;
609: : A, ( w -- ) T here H relon T , H ;
610:
611: >CROSS
612:
613: : tcmove ( source dest len -- )
614: \G cmove in target memory
615: bounds
616: ?DO dup T c@ H I T c! H 1+
617: LOOP drop ;
618:
619: >TARGET
620: H also Forth definitions \ ." asm: " order
621:
622: : X also target bl word find
623: IF state @ IF compile,
624: ELSE execute THEN
625: ELSE previous ABORT" Cross: access method not supported!"
626: THEN
627: previous ; immediate
628:
629: [IFDEF] asm-include asm-include [THEN] hex
630:
631: previous
632: >CROSS H
633:
634: \ \ -------------------- Compiler Plug Ins 01aug97jaw
635:
636: Defer lit, ( n -- )
637: Defer alit, ( n -- )
638: Defer branch, ( target-addr -- )
639: Defer ?branch, ( target-addr -- )
640: Defer branchmark, ( -- branch-addr )
641: Defer ?branchmark, ( -- branch-addr )
642: Defer branchto,
643: Defer branchtoresolve, ( branch-addr -- )
644: Defer branchfrom, ( -- )
645: Defer branchtomark, ( -- target-addr )
646: Defer colon, ( tcfa -- ) \ compiles call to tcfa at current position
647: Defer colon-resolve ( tcfa addr -- )
648: Defer addr-resolve ( target-addr addr -- )
649:
650: [IFUNDEF] ca>native
651: defer ca>native
652: [THEN]
653:
654: >TARGET
655: DEFER >body \ we need the system >body
656: \ and the target >body
657: >CROSS
658: T 2 cells H VALUE xt>body
659: DEFER doprim,
660: DEFER docol, \ compiles start of definition and doer
661: DEFER doer,
662: DEFER fini, \ compiles end of definition ;s
663: DEFER doeshandler,
664: DEFER dodoes,
665:
666: DEFER ]comp \ starts compilation
667: DEFER comp[ \ ends compilation
668:
669: : (cc) T a, H ; ' (cc) IS colon,
670: : (cr) >tempdp ]comp colon, comp[ tempdp> ; ' (cr) IS colon-resolve
671: : (ar) T ! H ; ' (ar) IS addr-resolve
672:
673: >TARGET
674: : compile, colon, ;
675: >CROSS
676:
677:
678:
679: \ resolve structure
680:
681: : >next ; \ link to next field
682: : >tag cell+ ; \ indecates type of reference: 0: call, 1: address
683: : >taddr cell+ cell+ ;
684: : >ghost 3 cells + ;
685:
686: : refered ( ghost tag -- )
687: swap >r here r@ >link @ , r@ >link ! ( tag ) ,
688: T here aligned H , r> drop last-header-ghost @ , ;
689:
690: Defer resolve-warning
691:
692: : reswarn-test ( ghost res-struct -- ghost res-struct )
693: over cr ." Resolving " >ghostname type dup ." in " >ghost @ >ghostname type ;
694:
695: : reswarn-forward ( ghost res-struct -- ghost res-struct )
696: over warnhead >ghostname type dup ." is referenced in "
697: >ghost @ >ghostname type ;
698:
699: \ ' reswarn-test IS resolve-warning
700:
701: \ resolve 14oct92py
702:
703: : resolve-loop ( ghost tcfa -- ghost tcfa )
704: >r dup >link
705: BEGIN @ dup WHILE
706: resolve-warning
707: r@ over >taddr @
708: 2 pick >tag @
709: IF addr-resolve
710: ELSE colon-resolve
711: THEN
712: REPEAT drop r> ;
713:
714: \ : resolve-loop ( ghost tcfa -- ghost tcfa )
715: \ >r dup >link @
716: \ BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
717:
718: \ exists 9may93jaw
719:
720: Variable TWarnings
721: TWarnings on
722: Variable Exists-Warnings
723: Exists-Warnings on
724:
725: : exists ( ghost tcfa -- )
726: over GhostNames
727: BEGIN @ dup
728: WHILE 2dup cell+ @ =
729: UNTIL
730: 2 cells + count
731: TWarnings @ Exists-Warnings @ and
732: IF warnhead type ." exists"
733: ELSE 2drop THEN
734: drop swap >link !
735: ELSE true abort" CROSS: Ghostnames inconsistent "
736: THEN ;
737:
738: : resolve ( ghost tcfa -- )
739: \ resolve referencies to ghost with tcfa
740: over forward? 0= IF exists EXIT THEN
741: resolve-loop over >link ! <res> swap >magic !
742: ['] noop IS resolve-warning
743: ;
744:
745: \ gexecute ghost, 01nov92py
746:
747: : is-forward ( ghost -- )
748: \ >link dup @ there rot ! T A, H ;
749: 0 refered -1 colon, ;
750:
751: : is-resolved ( ghost -- )
752: >link @ colon, ; \ compile-call
753:
754: : gexecute ( ghost -- )
755: dup @ <fwd> = IF is-forward ELSE is-resolved THEN ;
756:
757: : addr, ( ghost -- )
758: dup @ <fwd> = IF 1 refered 0 T a, H ELSE >link @ T a, H THEN ;
759:
760: \ !! : ghost, ghost gexecute ;
761:
762: \ .unresolved 11may93jaw
763:
764: variable ResolveFlag
765:
766: \ ?touched 11may93jaw
767:
768: : ?touched ( ghost -- flag ) dup forward? swap >link @
769: 0 <> and ;
770:
771: : ?resolved ( ghostname -- )
772: dup cell+ @ ?touched
773: IF cell+ cell+ count cr type ResolveFlag on ELSE drop THEN ;
774:
775: >MINIMAL
776: : .unresolved ( -- )
777: ResolveFlag off cr ." Unresolved: "
778: Ghostnames
779: BEGIN @ dup
780: WHILE dup ?resolved
781: REPEAT drop ResolveFlag @
782: IF
783: -1 abort" Unresolved words!"
784: ELSE
785: ." Nothing!"
786: THEN
787: cr ;
788:
789: : .stats
790: base @ >r decimal
791: cr ." named Headers: " headers-named @ .
792: \ cr ." MaxRam*" ramdp @ .
793: \ cr ." MaxRom*" romdp @ .
794: r> base ! ;
795:
796: >CROSS
797: \ Header states 12dec92py
798:
799: : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
800:
801: VARIABLE ^imm
802:
803: >TARGET
804: : immediate 40 flag!
805: ^imm @ @ dup <imm> = IF drop EXIT THEN
806: <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
807: <imm> ^imm @ ! ;
808: : restrict 20 flag! ;
809:
810: : isdoer <do:> last-header-ghost @ >magic ! ;
811: >CROSS
812:
813: \ ALIAS2 ansforth conform alias 9may93jaw
814:
815: : ALIAS2 create here 0 , DOES> @ execute ;
816: \ usage:
817: \ ' <name> alias2 bla !
818:
819: \ Target Header Creation 01nov92py
820:
821: >TARGET
822: : string, ( addr count -- )
823: dup T c, H bounds ?DO I c@ T c, H LOOP ;
824: : name, ( "name" -- ) bl word count T string, cfalign H ;
825: : view, ( -- ) ( dummy ) ;
826: >CROSS
827:
828: \ Target Document Creation (goes to crossdoc.fd) 05jul95py
829:
830: s" doc/crossdoc.fd" r/w create-file throw value doc-file-id
831: \ contains the file-id of the documentation file
832:
833: : T-\G ( -- )
834: source >in @ /string doc-file-id write-line throw
835: postpone \ ;
836:
837: Variable to-doc to-doc on
838:
839: : cross-doc-entry ( -- )
840: to-doc @ tlast @ 0<> and \ not an anonymous (i.e. noname) header
841: IF
842: s" " doc-file-id write-line throw
843: s" make-doc " doc-file-id write-file throw
844: tlast @ >image count $1F and doc-file-id write-file throw
845: >in @
846: [char] ( parse 2drop
847: [char] ) parse doc-file-id write-file throw
848: s" )" doc-file-id write-file throw
849: [char] \ parse 2drop
850: T-\G
851: >in !
852: THEN ;
853:
854: \ Target TAGS creation
855:
856: s" kernel.TAGS" r/w create-file throw value tag-file-id
857: \ contains the file-id of the tags file
858:
859: Create tag-beg 2 c, 7F c, bl c,
860: Create tag-end 2 c, bl c, 01 c,
861: Create tag-bof 1 c, 0C c,
862:
863: 2variable last-loadfilename 0 0 last-loadfilename 2!
864:
865: : put-load-file-name ( -- )
866: loadfilename 2@ last-loadfilename 2@ d<>
867: IF
868: tag-bof count tag-file-id write-line throw
869: sourcefilename 2dup
870: tag-file-id write-file throw
871: last-loadfilename 2!
872: s" ,0" tag-file-id write-line throw
873: THEN ;
874:
875: : cross-tag-entry ( -- )
876: tlast @ 0<> \ not an anonymous (i.e. noname) header
877: IF
878: put-load-file-name
879: source >in @ min tag-file-id write-file throw
880: tag-beg count tag-file-id write-file throw
881: tlast @ >image count $1F and tag-file-id write-file throw
882: tag-end count tag-file-id write-file throw
883: base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw
884: \ >in @ 0 <# #s [char] , hold #> tag-file-id write-line throw
885: s" ,0" tag-file-id write-line throw
886: base !
887: THEN ;
888:
889: \ Check for words
890:
891: Defer skip? ' false IS skip?
892:
893: : defined? ( -- flag ) \ name
894: ghost forward? 0= ;
895:
896: : needed? ( -- flag ) \ name
897: \G returns a false flag when
898: \G a word is not defined
899: \G a forward reference exists
900: \G so the definition is not skipped!
901: bl word gfind
902: IF dup forward?
903: nip
904: 0=
905: ELSE drop true THEN ;
906:
907: : doer? ( -- flag ) \ name
908: ghost >magic @ <do:> = ;
909:
910: : skip-defs ( -- )
911: BEGIN refill WHILE source -trailing nip 0= UNTIL THEN ;
912:
913: \ Target header creation
914:
915:
916: VARIABLE CreateFlag CreateFlag off
917:
918: : 0.r ( n1 n2 -- ) 0 swap <# 0 ?DO # LOOP #> type ;
919: : .sym
920: bounds
921: DO I c@ dup
922: CASE '/ OF drop ." \/" ENDOF
923: '\ OF drop ." \\" ENDOF
924: dup OF emit ENDOF
925: ENDCASE
926: LOOP ;
927:
928: : (Theader ( "name" -- ghost )
929: \ >in @ bl word count type 2 spaces >in !
930: \ wordheaders will always be compiled to rom
931: switchrom
932: T align H view,
933: tlast @ dup 0> IF T 1 cells - THEN A, H there tlast !
934: 1 headers-named +! \ Statistic
935: >in @ T name, H >in ! T here H tlastcfa !
936: \ Symbol table
937: \ >in @ cr ." sym:s/CFA=" there 4 0.r ." /" bl word count .sym ." /g" cr >in !
938: CreateFlag @ IF
939: >in @ alias2 swap >in ! \ create alias in target
940: >in @ ghost swap >in !
941: swap also ghosts ' previous swap ! \ tick ghost and store in alias
942: CreateFlag off
943: ELSE ghost THEN
944: dup Last-Header-Ghost !
945: dup >magic ^imm ! \ a pointer for immediate
946: Already @ IF dup >end tdoes !
947: ELSE 0 tdoes ! THEN
948: 80 flag!
949: cross-doc-entry cross-tag-entry ;
950:
951: VARIABLE ;Resolve 1 cells allot
952: \ this is the resolver information from ":"
953: \ resolving is done by ";"
954:
955: : Theader ( "name" -- ghost )
956: (THeader dup there resolve 0 ;Resolve ! ;
957:
958: >TARGET
959: : Alias ( cfa -- ) \ name
960: >in @ skip? IF 2drop EXIT THEN >in !
961: dup 0< has-prims 0= and
962: IF
963: ." needs prim: " >in @ bl word count type >in ! cr
964: THEN
965: (THeader over resolve T A, H 80 flag! ;
966: : Alias: ( cfa -- ) \ name
967: >in @ skip? IF 2drop EXIT THEN >in !
968: dup 0< has-prims 0= and
969: IF
970: ." needs doer: " >in @ bl word count type >in ! cr
971: THEN
972: ghost tuck swap resolve <do:> swap >magic ! ;
973: >CROSS
974:
975: \ Conditionals and Comments 11may93jaw
976:
977: : ;Cond
978: postpone ;
979: swap ! ; immediate
980:
981: : Cond: ( -- ) \ name {code } ;
982: atonce on
983: ghost
984: >exec
985: :NONAME ;
986:
987: : restrict? ( -- )
988: \ aborts on interprete state - ae
989: state @ 0= ABORT" CROSS: Restricted" ;
990:
991: : Comment ( -- )
992: >in @ atonce on ghost swap >in ! ' swap >exec ! ;
993:
994: Comment ( Comment \
995:
996: \ compile 10may93jaw
997:
998: : compile ( -- ) \ name
999: restrict?
1000: bl word gfind dup 0= ABORT" CROSS: Can't compile "
1001: 0> ( immediate? )
1002: IF >exec @ compile,
1003: ELSE postpone literal postpone gexecute THEN ;
1004: immediate
1005:
1006: : [G']
1007: \G ticks a ghost and returns its address
1008: bl word gfind 0= ABORT" CROSS: Ghost don't exists"
1009: state @
1010: IF postpone literal
1011: THEN ; immediate
1012:
1013: : ghost>cfa
1014: dup forward? ABORT" CROSS: forward " >link @ ;
1015:
1016: >TARGET
1017:
1018: : ' ( -- cfa )
1019: \ returns the target-cfa of a ghost
1020: bl word gfind 0= ABORT" CROSS: Ghost don't exists"
1021: ghost>cfa ;
1022:
1023: Cond: ['] T ' H alit, ;Cond
1024:
1025: >CROSS
1026:
1027: : [T']
1028: \ returns the target-cfa of a ghost, or compiles it as literal
1029: postpone [G'] state @ IF postpone ghost>cfa ELSE ghost>cfa THEN ; immediate
1030:
1031: \ \ threading modell 13dec92py
1032: \ modularized 14jun97jaw
1033:
1034: : fillcfa ( usedcells -- )
1035: T cells H xt>body swap - 0 ?DO 0 T c, H LOOP ;
1036:
1037: : (>body) ( cfa -- pfa ) xt>body + ; ' (>body) T IS >body H
1038:
1039: : (doer,) ( ghost -- ) ]comp gexecute comp[ 1 fillcfa ; ' (doer,) IS doer,
1040:
1041: : (docol,) ( -- ) [G'] :docol doer, ; ' (docol,) IS docol,
1042:
1043: : (doprim,) ( -- )
1044: there xt>body + ca>native T a, H 1 fillcfa ; ' (doprim,) IS doprim,
1045:
1046: : (doeshandler,) ( -- )
1047: T cfalign H compile :doesjump T 0 , H ; ' (doeshandler,) IS doeshandler,
1048:
1049: : (dodoes,) ( does-action-ghost -- )
1050: ]comp [G'] :dodoes gexecute comp[
1051: addr,
1052: T here H tcell - reloff 2 fillcfa ; ' (dodoes,) IS dodoes,
1053:
1054: : (lit,) ( n -- ) compile lit T , H ; ' (lit,) IS lit,
1055:
1056: : (alit,) ( n -- ) lit, T here cell - H relon ; ' (alit,) IS alit,
1057:
1058: : (fini,) compile ;s ; ' (fini,) IS fini,
1059:
1060: [IFUNDEF] (code)
1061: Defer (code)
1062: Defer (end-code)
1063: [THEN]
1064:
1065: >TARGET
1066: : Code
1067: defempty?
1068: (THeader there resolve
1069: [ has-prims 0= [IF] ITC [ELSE] true [THEN] ] [IF]
1070: doprim,
1071: [THEN]
1072: depth (code) ;
1073:
1074: : Code:
1075: defempty?
1076: ghost dup there ca>native resolve <do:> swap >magic !
1077: depth (code) ;
1078:
1079: : end-code
1080: (end-code)
1081: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
1082: ELSE true ABORT" CROSS: Stack empty" THEN
1083: ;
1084:
1085: Cond: chars ;Cond
1086:
1087: >CROSS
1088:
1089: \ tLiteral 12dec92py
1090:
1091: >TARGET
1092: Cond: \G T-\G ;Cond
1093:
1094: Cond: Literal ( n -- ) restrict? lit, ;Cond
1095: Cond: ALiteral ( n -- ) restrict? alit, ;Cond
1096:
1097: : Char ( "<char>" -- ) bl word char+ c@ ;
1098: Cond: [Char] ( "<char>" -- ) restrict? Char lit, ;Cond
1099:
1100: \ some special literals 27jan97jaw
1101:
1102: \ !! Known Bug: Special Literals and plug-ins work only correct
1103: \ on 16 and 32 Bit Targets and 32 Bit Hosts!
1104:
1105: Cond: MAXU
1106: restrict?
1107: tcell 1 cells u>
1108: IF compile lit tcell 0 ?DO FF T c, H LOOP
1109: ELSE $ffffffff lit, THEN
1110: ;Cond
1111:
1112: Cond: MINI
1113: restrict?
1114: tcell 1 cells u>
1115: IF compile lit bigendian
1116: IF 80 T c, H tcell 1 ?DO 0 T c, H LOOP
1117: ELSE tcell 1 ?DO 0 T c, H LOOP 80 T c, H
1118: THEN
1119: ELSE tcell 2 = IF $8000 ELSE $80000000 THEN lit, THEN
1120: ;Cond
1121:
1122: Cond: MAXI
1123: restrict?
1124: tcell 1 cells u>
1125: IF compile lit bigendian
1126: IF 7F T c, H tcell 1 ?DO FF T c, H LOOP
1127: ELSE tcell 1 ?DO FF T c, H LOOP 7F T c, H
1128: THEN
1129: ELSE tcell 2 = IF $7fff ELSE $7fffffff THEN lit, THEN
1130: ;Cond
1131:
1132: >CROSS
1133: \ Target compiling loop 12dec92py
1134: \ ">tib trick thrown out 10may93jaw
1135: \ number? defined at the top 11may93jaw
1136:
1137: \ compiled word might leave items on stack!
1138: : tcom ( in name -- )
1139: gfind ?dup IF 0> IF nip >exec @ execute
1140: ELSE nip gexecute THEN EXIT THEN
1141: number? dup IF 0> IF swap lit, THEN lit, drop
1142: ELSE 2drop >in !
1143: ghost gexecute THEN ;
1144:
1145: >TARGET
1146: \ : ; DOES> 13dec92py
1147: \ ] 9may93py/jaw
1148:
1149: : ] state on
1150: BEGIN
1151: BEGIN >in @ bl word
1152: dup c@ 0= WHILE 2drop refill 0=
1153: ABORT" CROSS: End of file while target compiling"
1154: REPEAT
1155: tcom
1156: state @
1157: 0=
1158: UNTIL ;
1159:
1160: \ by the way: defining a second interpreter (a compiler-)loop
1161: \ is not allowed if a system should be ans conform
1162:
1163: : : ( -- colon-sys ) \ Name
1164: defempty?
1165: constflag off \ don't let this flag work over colon defs
1166: \ just to go sure nothing unwanted happens
1167: >in @ skip? IF drop skip-defs EXIT THEN >in !
1168: (THeader ;Resolve ! there ;Resolve cell+ !
1169: docol, ]comp depth T ] H ;
1170:
1171: : :noname ( -- colon-sys )
1172: T cfalign H there docol, 0 ;Resolve ! depth T ] H ;
1173:
1174: Cond: EXIT ( -- ) restrict? compile ;S ;Cond
1175:
1176: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
1177:
1178: >CROSS
1179: : LastXT ;Resolve @ 0= abort" CROSS: no definition for LastXT"
1180: ;Resolve cell+ @ ;
1181:
1182: >TARGET
1183:
1184: Cond: recurse ( -- ) Last-Ghost @ gexecute ;Cond
1185:
1186: Cond: ; ( -- ) restrict?
1187: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
1188: ELSE true ABORT" CROSS: Stack empty" THEN
1189: fini,
1190: comp[
1191: state off
1192: ;Resolve @
1193: IF ;Resolve @ ;Resolve cell+ @ resolve THEN
1194: ;Cond
1195: Cond: [ restrict? state off ;Cond
1196:
1197: >CROSS
1198: : !does ( does-action -- )
1199: \ !! zusammenziehen und dodoes, machen!
1200: tlastcfa @ dup there >r tdp ! compile :dodoes r> tdp ! T cell+ ! H ;
1201: \ !! geht so nicht, da dodoes, ghost will!
1202: \ tlastcfa @ >tempdp dodoes, tempdp> ;
1203:
1204: >TARGET
1205: Cond: DOES> restrict?
1206: compile (does>) doeshandler,
1207: \ resolve words made by builders
1208: tdoes @ ?dup IF @ T here H resolve THEN
1209: ;Cond
1210: : DOES> switchrom doeshandler, T here H !does depth T ] H ;
1211:
1212: >CROSS
1213: \ Creation 01nov92py
1214:
1215: \ Builder 11may93jaw
1216:
1217: : Builder ( Create-xt do:-xt "name" -- )
1218: \ builds up a builder in current vocabulary
1219: \ create-xt is executed when word is interpreted
1220: \ do:-xt is executet when the created word from builder is executed
1221: \ for do:-xt an additional entry after the normal ghost-enrys is used
1222:
1223: >in @ alias2 swap dup >in ! >r >r
1224: Make-Ghost rot swap >exec ! ,
1225: r> r> >in !
1226: also ghosts ' previous swap ! ;
1227: \ DOES> dup >exec @ execute ;
1228:
1229: : gdoes, ( ghost -- )
1230: \ makes the codefield for a word that is built
1231: >end @ dup forward? 0=
1232: IF
1233: dup >magic @ <do:> =
1234: IF doer, EXIT THEN
1235: THEN
1236: \ compile :dodoes gexecute
1237: \ T here H tcell - reloff
1238: dodoes,
1239: ;
1240:
1241: : TCreate ( <name> -- )
1242: executed-ghost @
1243: CreateFlag on
1244: create-forward-warn
1245: IF ['] reswarn-forward IS resolve-warning THEN
1246: Theader >r dup gdoes,
1247: \ stores execution symantic in the built word
1248: >end @ >exec @ r> >exec ! ;
1249:
1250: : RTCreate ( <name> -- )
1251: \ creates a new word with code-field in ram
1252: executed-ghost @
1253: CreateFlag on
1254: create-forward-warn
1255: IF ['] reswarn-forward IS resolve-warning THEN
1256: \ make Alias
1257: (THeader there 0 T a, H 80 flag! ( S executed-ghost new-ghost )
1258: \ store poiter to code-field
1259: switchram T cfalign H
1260: there swap T ! H
1261: there tlastcfa !
1262: dup there resolve 0 ;Resolve !
1263: >r dup gdoes,
1264: >end @ >exec @ r> >exec ! ;
1265:
1266: : Build: ( -- [xt] [colon-sys] )
1267: :noname postpone TCreate ;
1268:
1269: : BuildSmart: ( -- [xt] [colon-sys] )
1270: :noname
1271: [ has-rom [IF] ]
1272: postpone RTCreate
1273: [ [ELSE] ]
1274: postpone TCreate
1275: [ [THEN] ] ;
1276:
1277: : gdoes> ( ghost -- addr flag )
1278: executed-ghost @
1279: state @ IF gexecute true EXIT THEN
1280: >link @ T >body H false ;
1281:
1282: \ DO: ;DO 11may93jaw
1283: \ changed to ?EXIT 10may93jaw
1284:
1285: : DO: ( -- addr [xt] [colon-sys] )
1286: here ghostheader
1287: :noname postpone gdoes> postpone ?EXIT ;
1288:
1289: : by: ( -- addr [xt] [colon-sys] ) \ name
1290: ghost
1291: :noname postpone gdoes> postpone ?EXIT ;
1292:
1293: : ;DO ( addr [xt] [colon-sys] -- addr )
1294: postpone ; ( S addr xt )
1295: over >exec ! ; immediate
1296:
1297: : by ( -- addr ) \ Name
1298: ghost >end @ ;
1299:
1300: >TARGET
1301: \ Variables and Constants 05dec92py
1302:
1303: Build: ( n -- ) ;
1304: by: :docon ( ghost -- n ) T @ H ;DO
1305: Builder (Constant)
1306:
1307: Build: ( n -- ) T , H ;
1308: by (Constant)
1309: Builder Constant
1310:
1311: Build: ( n -- ) T A, H ;
1312: by (Constant)
1313: Builder AConstant
1314:
1315: Build: ( d -- ) T , , H ;
1316: DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO
1317: Builder 2Constant
1318:
1319: BuildSmart: ;
1320: by: :dovar ( ghost -- addr ) ;DO
1321: Builder Create
1322:
1323: has-rom [IF]
1324: Build: ( n -- ) T here 0 , H switchram T align here swap ! 0 , H ( switchrom ) ;
1325: by (Constant)
1326: Builder Variable
1327: [ELSE]
1328: Build: T 0 , H ;
1329: by Create
1330: Builder Variable
1331: [THEN]
1332:
1333: has-rom [IF]
1334: Build: ( n -- ) T here 0 , H switchram T align here swap ! 0 , H ( switchrom ) ;
1335: by (Constant)
1336: Builder AVariable
1337: [ELSE]
1338: Build: T 0 A, H ;
1339: by Create
1340: Builder AVariable
1341: [THEN]
1342:
1343: \ User variables 04may94py
1344:
1345: >CROSS
1346: Variable tup 0 tup !
1347: Variable tudp 0 tudp !
1348: : u, ( n -- udp )
1349: tup @ tudp @ + T ! H
1350: tudp @ dup T cell+ H tudp ! ;
1351: : au, ( n -- udp )
1352: tup @ tudp @ + T A! H
1353: tudp @ dup T cell+ H tudp ! ;
1354: >TARGET
1355:
1356: Build: T 0 u, , H ;
1357: by: :douser ( ghost -- up-addr ) T @ H tup @ + ;DO
1358: Builder User
1359:
1360: Build: T 0 u, , 0 u, drop H ;
1361: by User
1362: Builder 2User
1363:
1364: Build: T 0 au, , H ;
1365: by User
1366: Builder AUser
1367:
1368: BuildSmart: T , H ;
1369: by (Constant)
1370: Builder Value
1371:
1372: BuildSmart: T A, H ;
1373: by (Constant)
1374: Builder AValue
1375:
1376: BuildSmart: ( -- ) [T'] noop T A, H ;
1377: by: :dodefer ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1378: Builder Defer
1379:
1380: BuildSmart: ( inter comp -- ) swap T immediate A, A, H ;
1381: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1382: Builder interpret/compile:
1383:
1384: \ Sturctures 23feb95py
1385:
1386: >CROSS
1387: : nalign ( addr1 n -- addr2 )
1388: \ addr2 is the aligned version of addr1 wrt the alignment size n
1389: 1- tuck + swap invert and ;
1390: >TARGET
1391:
1392: Build: ;
1393: by: :dofield T @ H + ;DO
1394: Builder (Field)
1395:
1396: Build: ( align1 offset1 align size "name" -- align2 offset2 )
1397: rot dup T , H ( align1 align size offset1 )
1398: + >r nalign r> ;
1399: by (Field)
1400: Builder Field
1401:
1402: : struct T 1 chars 0 H ;
1403: : end-struct T 2Constant H ;
1404:
1405: : cell% ( n -- size align )
1406: T 1 cells H dup ;
1407:
1408: \ ' 2Constant Alias2 end-struct
1409: \ 0 1 T Chars H 2Constant struct
1410:
1411: 0 [IF]
1412:
1413: \ structural conditionals 17dec92py
1414:
1415: >CROSS
1416: : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
1417: : sys? ( sys -- sys ) dup 0= ?struc ;
1418: : >mark ( -- sys ) T here ( dup ." M" hex. ) 0 , H ;
1419:
1420: : branchoffset ( src dest -- ) - ;
1421: : >resolve ( sys -- ) T here ( dup ." >" hex. ) over branchoffset swap ! H ;
1422: : <resolve ( sys -- ) T here ( dup ." <" hex. ) branchoffset , H ;
1423: >TARGET
1424:
1425: \ Structural Conditionals 12dec92py
1426:
1427: Cond: BUT restrict? sys? swap ;Cond
1428: Cond: YET restrict? sys? dup ;Cond
1429:
1430: >CROSS
1431: Variable tleavings
1432: >TARGET
1433:
1434: Cond: DONE ( addr -- ) restrict? tleavings @
1435: BEGIN 2dup u> 0= WHILE dup T @ H swap >resolve REPEAT
1436: tleavings ! drop ;Cond
1437:
1438: >CROSS
1439: : (leave T here H tleavings @ T , H tleavings ! ;
1440: >TARGET
1441:
1442: Cond: LEAVE restrict? compile branch (leave ;Cond
1443: Cond: ?LEAVE restrict? compile 0= compile ?branch (leave ;Cond
1444:
1445: \ Structural Conditionals 12dec92py
1446:
1447: Cond: AHEAD restrict? compile branch >mark ;Cond
1448: Cond: IF restrict? compile ?branch >mark ;Cond
1449: Cond: THEN restrict? sys? branchto, dup T @ H ?struc >resolve ;Cond
1450: Cond: ELSE restrict? sys? compile AHEAD swap compile THEN ;Cond
1451:
1452: Cond: BEGIN restrict? T branchto, here ( dup ." B" hex. ) H ;Cond
1453: Cond: WHILE restrict? sys? compile IF swap ;Cond
1454: Cond: AGAIN restrict? sys? compile branch <resolve ;Cond
1455: Cond: UNTIL restrict? sys? compile ?branch <resolve ;Cond
1456: Cond: REPEAT restrict? over 0= ?struc compile AGAIN compile THEN ;Cond
1457:
1458: Cond: CASE restrict? 0 ;Cond
1459: Cond: OF restrict? 1+ >r compile over compile =
1460: compile IF compile drop r> ;Cond
1461: Cond: ENDOF restrict? >r compile ELSE r> ;Cond
1462: Cond: ENDCASE restrict? compile drop 0 ?DO compile THEN LOOP ;Cond
1463:
1464: \ Structural Conditionals 12dec92py
1465:
1466: Cond: DO restrict? compile (do) T here H ;Cond
1467: Cond: ?DO restrict? compile (?do) T (leave here H ;Cond
1468: Cond: FOR restrict? compile (for) T here H ;Cond
1469:
1470: >CROSS
1471: : loop] dup <resolve tcell - compile DONE compile unloop ;
1472: >TARGET
1473:
1474: Cond: LOOP restrict? sys? compile (loop) loop] ;Cond
1475: Cond: +LOOP restrict? sys? compile (+loop) loop] ;Cond
1476: Cond: NEXT restrict? sys? compile (next) loop] ;Cond
1477:
1478: [ELSE]
1479:
1480: \ structural conditionals 17dec92py
1481:
1482: >CROSS
1483: : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
1484: : sys? ( sys -- sys ) dup 0= ?struc ;
1485: : >mark ( -- sys ) T here ( dup ." M" hex. ) 0 , H ;
1486:
1487: : branchoffset ( src dest -- ) - ;
1488:
1489: : >resolve ( sys -- ) T here ( dup ." >" hex. ) over branchoffset swap ! H ;
1490:
1491: : <resolve ( sys -- ) T here ( dup ." <" hex. ) branchoffset , H ;
1492:
1493: :noname compile branch T here branchoffset , H ; IS branch,
1494: :noname compile ?branch T here branchoffset , H ; IS ?branch,
1495: :noname compile branch T here 0 , H ; IS branchmark,
1496: :noname compile ?branch T here 0 , H ; IS ?branchmark,
1497: :noname dup T @ H ?struc T here over branchoffset swap ! H ; IS branchtoresolve,
1498: :noname branchto, T here H ; IS branchtomark,
1499:
1500: >TARGET
1501:
1502: \ Structural Conditionals 12dec92py
1503:
1504: Cond: BUT restrict? sys? swap ;Cond
1505: Cond: YET restrict? sys? dup ;Cond
1506:
1507: >CROSS
1508: Variable tleavings
1509: >TARGET
1510:
1511: Cond: DONE ( addr -- ) restrict? tleavings @
1512: BEGIN 2dup u> 0= WHILE dup T @ H swap >resolve REPEAT
1513: tleavings ! drop ;Cond
1514:
1515: >CROSS
1516: : (leave T here H tleavings @ T , H tleavings ! ;
1517: >TARGET
1518:
1519: Cond: LEAVE restrict? compile branch (leave ;Cond
1520: Cond: ?LEAVE restrict? compile 0= compile ?branch (leave ;Cond
1521:
1522: \ Structural Conditionals 12dec92py
1523:
1524: Cond: AHEAD restrict? branchmark, ;Cond
1525: Cond: IF restrict? ?branchmark, ;Cond
1526: Cond: THEN restrict? sys? branchto, branchtoresolve, ;Cond
1527: Cond: ELSE restrict? sys? compile AHEAD swap compile THEN ;Cond
1528:
1529: Cond: BEGIN restrict? branchtomark, ;Cond
1530: Cond: WHILE restrict? sys? compile IF swap ;Cond
1531: Cond: AGAIN restrict? sys? branch, ;Cond
1532: Cond: UNTIL restrict? sys? ?branch, ;Cond
1533: Cond: REPEAT restrict? over 0= ?struc compile AGAIN compile THEN ;Cond
1534:
1535: Cond: CASE restrict? 0 ;Cond
1536: Cond: OF restrict? 1+ >r compile over compile =
1537: compile IF compile drop r> ;Cond
1538: Cond: ENDOF restrict? >r compile ELSE r> ;Cond
1539: Cond: ENDCASE restrict? compile drop 0 ?DO compile THEN LOOP ;Cond
1540:
1541: \ Structural Conditionals 12dec92py
1542:
1543: Cond: DO restrict? compile (do) T here H ;Cond
1544: Cond: ?DO restrict? compile (?do) T (leave here H ;Cond
1545: Cond: FOR restrict? compile (for) T here H ;Cond
1546:
1547: >CROSS
1548: : loop] dup <resolve tcell - compile DONE compile unloop ;
1549: >TARGET
1550:
1551: Cond: LOOP restrict? sys? compile (loop) loop] ;Cond
1552: Cond: +LOOP restrict? sys? compile (+loop) loop] ;Cond
1553: Cond: NEXT restrict? sys? compile (next) loop] ;Cond
1554:
1555: [THEN]
1556:
1557: \ String words 23feb93py
1558:
1559: : ," [char] " parse T string, align H ;
1560:
1561: Cond: ." restrict? compile (.") T ," H ;Cond
1562: Cond: S" restrict? compile (S") T ," H ;Cond
1563: Cond: ABORT" restrict? compile (ABORT") T ," H ;Cond
1564:
1565: Cond: IS T ' >body H compile ALiteral compile ! ;Cond
1566: : IS T ' >body ! H ;
1567: Cond: TO T ' >body H compile ALiteral compile ! ;Cond
1568: : TO T ' >body ! H ;
1569:
1570: Cond: defers T ' >body @ compile, H ;Cond
1571: : on T -1 swap ! H ;
1572: : off T 0 swap ! H ;
1573:
1574: \ LINKED ERR" ENV" 2ENV" 18may93jaw
1575:
1576: \ linked list primitive
1577: : linked T here over @ A, swap ! H ;
1578: : chained T linked A, H ;
1579:
1580: : err" s" ErrLink linked" evaluate T , H
1581: [char] " parse T string, align H ;
1582:
1583: : env" [char] " parse s" EnvLink linked" evaluate
1584: T string, align , H ;
1585:
1586: : 2env" [char] " parse s" EnvLink linked" evaluate
1587: here >r T string, align , , H
1588: r> dup T c@ H 80 and swap T c! H ;
1589:
1590: \ compile must be last 22feb93py
1591:
1592: Cond: compile ( -- ) restrict? \ name
1593: bl word gfind dup 0= ABORT" CROSS: Can't compile"
1594: 0> IF gexecute
1595: ELSE dup >magic @ <imm> =
1596: IF gexecute
1597: ELSE compile (compile) gexecute THEN THEN ;Cond
1598:
1599: Cond: postpone ( -- ) restrict? \ name
1600: bl word gfind dup 0= ABORT" CROSS: Can't compile"
1601: 0> IF gexecute
1602: ELSE dup >magic @ <imm> =
1603: IF gexecute
1604: ELSE compile (compile) gexecute THEN THEN ;Cond
1605:
1606: >MINIMAL
1607: also minimal
1608: \ Usefull words 13feb93py
1609:
1610: : KB 400 * ;
1611:
1612: \ define new [IFDEF] and [IFUNDEF] 20may93jaw
1613:
1614: : defined? defined? ;
1615: : needed? needed? ;
1616: : doer? doer? ;
1617:
1618: \ we want to use IFDEF on compiler directives (e.g. E?) in the source, too
1619:
1620: : directive?
1621: bl word count [ ' target >wordlist ] aliteral search-wordlist
1622: dup IF nip THEN ;
1623:
1624: : [IFDEF] >in @ directive? swap >in !
1625: 0= IF defined? ELSE name 2drop true THEN
1626: postpone [IF] ;
1627:
1628: : [IFUNDEF] defined? 0= postpone [IF] ;
1629:
1630: \ C: \- \+ Conditional Compiling 09jun93jaw
1631:
1632: : C: >in @ defined? 0=
1633: IF >in ! T : H
1634: ELSE drop
1635: BEGIN bl word dup c@
1636: IF count comment? s" ;" compare 0= ?EXIT
1637: ELSE refill 0= ABORT" CROSS: Out of Input while C:"
1638: THEN
1639: AGAIN
1640: THEN ;
1641:
1642: also minimal
1643:
1644: \G doesn't skip line when bit is set in debugmask
1645: : \D name evaluate debugmasksource @ and 0= IF postpone \ THEN ;
1646:
1647: \G interprets the line if word is not defined
1648: : \- defined? IF postpone \ THEN ;
1649:
1650: \G interprets the line if word is defined
1651: : \+ defined? 0= IF postpone \ THEN ;
1652:
1653: Cond: \- \- ;Cond
1654: Cond: \+ \+ ;Cond
1655: Cond: \D \D ;Cond
1656:
1657: : ?? bl word find IF execute ELSE drop 0 THEN ;
1658:
1659: : needed:
1660: \G defines ghost for words that we want to be compiled
1661: BEGIN >in @ bl word c@ WHILE >in ! ghost drop REPEAT drop ;
1662:
1663: : [IF] postpone [IF] ;
1664: : [THEN] postpone [THEN] ;
1665: : [ELSE] postpone [ELSE] ;
1666:
1667: Cond: [IF] [IF] ;Cond
1668: Cond: [IFDEF] [IFDEF] ;Cond
1669: Cond: [IFUNDEF] [IFUNDEF] ;Cond
1670: Cond: [THEN] [THEN] ;Cond
1671: Cond: [ELSE] [ELSE] ;Cond
1672:
1673: previous
1674:
1675: \ save-cross 17mar93py
1676:
1677: >CROSS
1678: Create magic s" Gforth10" here over allot swap move
1679:
1680: char 1 bigendian + tcell + magic 7 + c!
1681:
1682: : save-cross ( "image-name" "binary-name" -- )
1683: bl parse ." Saving to " 2dup type cr
1684: w/o bin create-file throw >r
1685: TNIL IF
1686: s" #! " r@ write-file throw
1687: bl parse r@ write-file throw
1688: s" -i" r@ write-file throw
1689: #lf r@ emit-file throw
1690: r@ dup file-position throw drop 8 mod 8 swap ( file-id limit index )
1691: ?do
1692: bl over emit-file throw
1693: loop
1694: drop
1695: magic 8 r@ write-file throw \ write magic
1696: ELSE
1697: bl parse 2drop
1698: THEN
1699: image @ there
1700: r@ write-file throw \ write image
1701: TNIL IF
1702: bit$ @ there 1- tcell>bit rshift 1+
1703: r@ write-file throw \ write tags
1704: THEN
1705: r> close-file throw ;
1706:
1707: : save-region ( addr len -- )
1708: bl parse w/o bin create-file throw >r
1709: swap image @ + swap r@ write-file throw
1710: r> close-file throw ;
1711:
1712: \ words that should be in minimal
1713:
1714: create s-buffer 50 chars allot
1715:
1716: >MINIMAL
1717: also minimal
1718:
1719: bigendian Constant bigendian
1720: : here there ;
1721: : >ram >ram ;
1722: : >rom >rom ;
1723: : >auto >auto ;
1724: : >tempdp >tempdp ;
1725: : tempdp> tempdp> ;
1726: : const constflag on ;
1727: : warnings name 3 = 0= twarnings ! drop ;
1728:
1729:
1730: : save-cross save-cross ;
1731: : save-region save-region ;
1732: : tdump swap >image swap dump ;
1733:
1734: also forth
1735: [IFDEF] Label : Label defempty? Label ; [THEN]
1736: [IFDEF] start-macros : start-macros defempty? start-macros ; [THEN]
1737: [IFDEF] builttag : builttag builttag ; [THEN]
1738: previous
1739:
1740: : s" [char] " parse s-buffer place s-buffer count ; \ for environment?
1741: : + + ;
1742: : 1+ 1 + ;
1743: : 2+ 2 + ;
1744: : or or ;
1745: : 1- 1- ;
1746: : - - ;
1747: : and and ;
1748: : or or ;
1749: : 2* 2* ;
1750: : * * ;
1751: : / / ;
1752: : dup dup ;
1753: : over over ;
1754: : swap swap ;
1755: : rot rot ;
1756: : drop drop ;
1757: : = = ;
1758: : 0= 0= ;
1759: : lshift lshift ;
1760: : 2/ 2/ ;
1761: : . . ;
1762:
1763: : all-words ['] false IS skip? ;
1764: : needed-words ['] needed? IS skip? ;
1765: : undef-words ['] defined? IS skip? ;
1766:
1767: : \ postpone \ ; immediate
1768: : \G T-\G ; immediate
1769: : ( postpone ( ; immediate
1770: : include bl word count included ;
1771: : require require ;
1772: : .( [char] ) parse type ;
1773: : ." [char] " parse type ;
1774: : cr cr ;
1775:
1776: : times 0 ?DO dup T c, H LOOP drop ; \ used for space table creation
1777: only forth also minimal definitions
1778:
1779: \ cross-compiler words
1780:
1781: : decimal decimal ;
1782: : hex hex ;
1783:
1784: : tudp T tudp H ;
1785: : tup T tup H ;
1786:
1787: : doc-off false T to-doc H ! ;
1788: : doc-on true T to-doc H ! ;
1789: [IFDEF] dbg : dbg dbg ; [THEN]
1790:
1791: minimal
1792:
1793: \ for debugging...
1794: : order order ;
1795: : hwords words ;
1796: : words also ghosts words previous ;
1797: : .s .s ;
1798: : bye bye ;
1799:
1800: \ turnkey direction
1801: : H forth ; immediate
1802: : T minimal ; immediate
1803: : G ghosts ; immediate
1804:
1805: : turnkey 0 set-order also Target definitions
1806: also Minimal also ;
1807:
1808: \ these ones are pefered:
1809:
1810: : lock turnkey ;
1811: : unlock forth also cross ;
1812:
1813: : [[ also unlock ;
1814: : ]] previous previous ;
1815:
1816: unlock definitions also minimal
1817: : lock lock ;
1818: lock
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