1: \ CROSS.FS The Cross-Compiler 06oct92py
2: \ Idea and implementation: Bernd Paysan (py)
3:
4: \ Copyright (C) 1995,1996,1997,1998,1999,2000 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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
21:
22: 0
23: [IF]
24:
25: ToDo:
26: - Crossdoc destination ./doc/crossdoc.fd makes no sense when
27: cross.fs is used seperately. jaw
28: - Do we need this char translation with >address and in branchoffset?
29: (>body also affected) jaw
30: - MAXU etc. can be done with dlit,
31:
32: [THEN]
33:
34: hex
35:
36: \ debugging for compiling
37:
38: \ print stack at each colon definition
39: \ : : save-input cr bl word count type restore-input throw .s : ;
40:
41: \ print stack at each created word
42: \ : create save-input cr bl word count type restore-input throw .s create ;
43:
44:
45: \ \ ------------- Setup Vocabularies
46:
47: \ Remark: Vocabulary is not ANS, but it should work...
48:
49: Vocabulary Cross
50: Vocabulary Target
51: Vocabulary Ghosts
52: Vocabulary Minimal
53: only Forth also Target also also
54: definitions Forth
55:
56: : T previous Ghosts also Target ; immediate
57: : G Ghosts ; immediate
58: : H previous Forth also Cross ; immediate
59:
60: forth definitions
61:
62: : T previous Ghosts also Target ; immediate
63: : G Ghosts ; immediate
64:
65:
66: : >cross also Cross definitions previous ;
67: : >target also Target definitions previous ;
68: : >minimal also Minimal definitions previous ;
69:
70: H
71:
72: >CROSS
73:
74: \ find out whether we are compiling with gforth
75:
76: : defined? bl word find nip ;
77: defined? emit-file defined? toupper and \ drop 0
78: [IF]
79: \ use this in a gforth system
80: : \GFORTH ; immediate
81: : \ANSI postpone \ ; immediate
82: [ELSE]
83: : \GFORTH postpone \ ; immediate
84: : \ANSI ; immediate
85: [THEN]
86:
87: \ANSI : [IFUNDEF] defined? 0= postpone [IF] ; immediate
88: \ANSI : [IFDEF] defined? postpone [IF] ; immediate
89: 0 \ANSI drop 1
90: [IF]
91: : \G postpone \ ; immediate
92: : rdrop postpone r> postpone drop ; immediate
93: : name bl word count ;
94: : bounds over + swap ;
95: : scan >r BEGIN dup WHILE over c@ r@ <> WHILE 1 /string REPEAT THEN rdrop ;
96: : linked here over @ , swap ! ;
97: : alias create , DOES> @ EXECUTE ;
98: : defer ['] noop alias ;
99: : is state @
100: IF ' >body postpone literal postpone !
101: ELSE ' >body ! THEN ; immediate
102: : 0>= 0< 0= ;
103: : d<> rot <> -rot <> or ;
104: : toupper dup [char] a [char] z 1+ within IF [char] A [char] a - + THEN ;
105: Variable ebuf
106: : emit-file ( c fd -- ior ) swap ebuf c! ebuf 1 chars rot write-file ;
107: 0a Constant #lf
108: 0d Constant #cr
109:
110: [IFUNDEF] Warnings Variable Warnings [THEN]
111:
112: \ \ Number parsing 23feb93py
113:
114: \ number? number 23feb93py
115:
116: Variable dpl
117:
118: hex
119: Create bases 10 , 2 , A , 100 ,
120: \ 16 2 10 character
121:
122: \ !! protect BASE saving wrapper against exceptions
123: : getbase ( addr u -- addr' u' )
124: over c@ [char] $ - dup 4 u<
125: IF
126: cells bases + @ base ! 1 /string
127: ELSE
128: drop
129: THEN ;
130:
131: : sign? ( addr u -- addr u flag )
132: over c@ [char] - = dup >r
133: IF
134: 1 /string
135: THEN
136: r> ;
137:
138: : s>unumber? ( addr u -- ud flag )
139: over [char] ' =
140: IF \ a ' alone is rather unusual :-)
141: drop char+ c@ 0 true EXIT
142: THEN
143: base @ >r dpl on getbase
144: 0. 2swap
145: BEGIN ( d addr len )
146: dup >r >number dup
147: WHILE \ there are characters left
148: dup r> -
149: WHILE \ the last >number parsed something
150: dup 1- dpl ! over c@ [char] . =
151: WHILE \ the current char is '.'
152: 1 /string
153: REPEAT THEN \ there are unparseable characters left
154: 2drop false
155: ELSE
156: rdrop 2drop true
157: THEN
158: r> base ! ;
159:
160: \ ouch, this is complicated; there must be a simpler way - anton
161: : s>number? ( addr len -- d f )
162: \ converts string addr len into d, flag indicates success
163: sign? >r
164: s>unumber?
165: 0= IF
166: rdrop false
167: ELSE \ no characters left, all ok
168: r>
169: IF
170: dnegate
171: THEN
172: true
173: THEN ;
174:
175: : s>number ( addr len -- d )
176: \ don't use this, there is no way to tell success
177: s>number? drop ;
178:
179: : snumber? ( c-addr u -- 0 / n -1 / d 0> )
180: s>number? 0=
181: IF
182: 2drop false EXIT
183: THEN
184: dpl @ dup 0< IF
185: nip
186: ELSE
187: 1+
188: THEN ;
189:
190: : number? ( string -- string 0 / n -1 / d 0> )
191: dup >r count snumber? dup if
192: rdrop
193: else
194: r> swap
195: then ;
196:
197: : number ( string -- d )
198: number? ?dup 0= abort" ?" 0<
199: IF
200: s>d
201: THEN ;
202:
203: [THEN]
204:
205: \ this provides assert( and struct stuff
206: \GFORTH [IFUNDEF] assert1(
207: \GFORTH also forth definitions require assert.fs previous
208: \GFORTH [THEN]
209:
210: >CROSS
211:
212: hex \ the defualt base for the cross-compiler is hex !!
213: \ Warnings off
214:
215: \ words that are generaly useful
216:
217: : KB 400 * ;
218: : >wordlist ( vocabulary-xt -- wordlist-struct )
219: also execute get-order swap >r 1- set-order r> ;
220:
221: : umax 2dup u< IF swap THEN drop ;
222: : umin 2dup u> IF swap THEN drop ;
223:
224: : string, ( c-addr u -- )
225: \ puts down string as cstring
226: dup c, here swap chars dup allot move ;
227:
228: : ," [char] " parse string, ;
229:
230: : SetValue ( n -- <name> )
231: \G Same behaviour as "Value" if the <name> is not defined
232: \G Same behaviour as "to" if <name> is defined
233: \G SetValue searches in the current vocabulary
234: save-input bl word >r restore-input throw r> count
235: get-current search-wordlist
236: IF drop >r
237: \ we have to set current to be topmost context wordlist
238: get-order get-order get-current swap 1+ set-order
239: r> ['] to execute
240: set-order
241: ELSE Value THEN ;
242:
243: : DefaultValue ( n -- <name> )
244: \G Same behaviour as "Value" if the <name> is not defined
245: \G DefaultValue searches in the current vocabulary
246: save-input bl word >r restore-input throw r> count
247: get-current search-wordlist
248: IF bl word drop 2drop ELSE Value THEN ;
249:
250: hex
251:
252: \ 1 Constant Cross-Flag \ to check whether assembler compiler plug-ins are
253: \ for cross-compiling
254: \ No! we use "[IFUNDEF]" there to find out whether we are target compiling!!!
255:
256: : comment? ( c-addr u -- c-addr u )
257: 2dup s" (" compare 0=
258: IF postpone (
259: ELSE 2dup s" \" compare 0= IF postpone \ THEN
260: THEN ;
261:
262: : X bl word count [ ' target >wordlist ] Literal search-wordlist
263: IF state @ IF compile,
264: ELSE execute THEN
265: ELSE -1 ABORT" Cross: access method not supported!"
266: THEN ; immediate
267:
268: \ Begin CROSS COMPILER:
269:
270: \ debugging
271:
272: 0 [IF]
273:
274: This implements debugflags for the cross compiler and the compiled
275: images. It works identical to the has-flags in the environment.
276: The debugflags are defined in a vocabluary. If the word exists and
277: its value is true, the flag is switched on.
278:
279: [THEN]
280:
281: >CROSS
282:
283: Vocabulary debugflags \ debug flags for cross
284: also debugflags get-order over
285: Constant debugflags-wl
286: set-order previous
287:
288: : DebugFlag
289: get-current >r debugflags-wl set-current
290: SetValue
291: r> set-current ;
292:
293: : Debug? ( adr u -- flag )
294: \G return true if debug flag is defined or switched on
295: debugflags-wl search-wordlist
296: IF EXECUTE
297: ELSE false THEN ;
298:
299: : D? ( <name> -- flag )
300: \G return true if debug flag is defined or switched on
301: \G while compiling we do not return the current value but
302: bl word count debug? ;
303:
304: : [d?]
305: \G compile the value-xt so the debug flag can be switched
306: \G the flag must exist!
307: bl word count debugflags-wl search-wordlist
308: IF compile,
309: ELSE -1 ABORT" unknown debug flag"
310: \ POSTPONE false
311: THEN ; immediate
312:
313: \ \ -------------------- source file
314:
315: decimal
316:
317: Variable cross-file-list
318: 0 cross-file-list !
319: Variable target-file-list
320: 0 target-file-list !
321: Variable host-file-list
322: 0 host-file-list !
323:
324: cross-file-list Value file-list
325: 0 Value source-desc
326:
327: \ file loading
328:
329: : >fl-id 1 cells + ;
330: : >fl-name 2 cells + ;
331:
332: Variable filelist 0 filelist !
333: Create NoFile ," #load-file#"
334:
335: : loadfile ( -- adr )
336: source-desc ?dup IF >fl-name ELSE NoFile THEN ;
337:
338: : sourcefilename ( -- adr len )
339: loadfile count ;
340:
341: \ANSI : sourceline# 0 ;
342:
343: \ \ -------------------- path handling from kernel/paths.fs
344:
345: \ paths.fs path file handling 03may97jaw
346:
347: \ -Changing the search-path:
348: \ fpath+ <path> adds a directory to the searchpath
349: \ fpath= <path>|<path> makes complete now searchpath
350: \ seperator is |
351: \ .fpath displays the search path
352: \ remark I:
353: \ a ./ in the beginning of filename is expanded to the directory the
354: \ current file comes from. ./ can also be included in the search-path!
355: \ ~+/ loads from the current working directory
356:
357: \ remark II:
358: \ if there is no sufficient space for the search path increase it!
359:
360:
361: \ -Creating custom paths:
362:
363: \ It is possible to use the search mechanism on yourself.
364:
365: \ Make a buffer for the path:
366: \ create mypath 100 chars , \ maximum length (is checked)
367: \ 0 , \ real len
368: \ 100 chars allot \ space for path
369: \ use the same functions as above with:
370: \ mypath path+
371: \ mypath path=
372: \ mypath .path
373:
374: \ do a open with the search path:
375: \ open-path-file ( adr len path -- fd adr len ior )
376: \ the file is opened read-only; if the file is not found an error is generated
377:
378: \ questions to: wilke@jwdt.com
379:
380: [IFUNDEF] +place
381: : +place ( adr len adr )
382: 2dup >r >r
383: dup c@ char+ + swap move
384: r> r> dup c@ rot + swap c! ;
385: [THEN]
386:
387: [IFUNDEF] place
388: : place ( c-addr1 u c-addr2 )
389: 2dup c! char+ swap move ;
390: [THEN]
391:
392: \ if we have path handling, use this and the setup of it
393: [IFUNDEF] open-fpath-file
394:
395: create sourcepath 1024 chars , 0 , 1024 chars allot \ !! make this dynamic
396: sourcepath value fpath
397:
398: : also-path ( adr len path^ -- )
399: >r
400: \ len check
401: r@ cell+ @ over + r@ @ u> ABORT" path buffer too small!"
402: \ copy into
403: tuck r@ cell+ dup @ cell+ + swap cmove
404: \ make delimiter
405: 0 r@ cell+ dup @ cell+ + 2 pick + c! 1 + r> cell+ +!
406: ;
407:
408: : only-path ( adr len path^ -- )
409: dup 0 swap cell+ ! also-path ;
410:
411: : path+ ( path-addr "dir" -- ) \ gforth
412: \G Add the directory @var{dir} to the search path @var{path-addr}.
413: name rot also-path ;
414:
415: : fpath+ ( "dir" ) \ gforth
416: \G Add directory @var{dir} to the Forth search path.
417: fpath path+ ;
418:
419: : path= ( path-addr "dir1|dir2|dir3" ) \ gforth
420: \G Make a complete new search path; the path separator is |.
421: name 2dup bounds ?DO i c@ [char] | = IF 0 i c! THEN LOOP
422: rot only-path ;
423:
424: : fpath= ( "dir1|dir2|dir3" ) \ gforth
425: \G Make a complete new Forth search path; the path separator is |.
426: fpath path= ;
427:
428: : path>counted cell+ dup cell+ swap @ ;
429:
430: : next-path ( adr len -- adr2 len2 )
431: 2dup 0 scan
432: dup 0= IF 2drop 0 -rot 0 -rot EXIT THEN
433: >r 1+ -rot r@ 1- -rot
434: r> - ;
435:
436: : previous-path ( path^ -- )
437: dup path>counted
438: BEGIN tuck dup WHILE repeat ;
439:
440: : .path ( path-addr -- ) \ gforth
441: \G Display the contents of the search path @var{path-addr}.
442: path>counted
443: BEGIN next-path dup WHILE type space REPEAT 2drop 2drop ;
444:
445: : .fpath ( -- ) \ gforth
446: \G Display the contents of the Forth search path.
447: fpath .path ;
448:
449: : absolut-path? ( addr u -- flag ) \ gforth
450: \G A path is absolute if it starts with a / or a ~ (~ expansion),
451: \G or if it is in the form ./*, extended regexp: ^[/~]|./, or if
452: \G it has a colon as second character ("C:..."). Paths simply
453: \G containing a / are not absolute!
454: 2dup 2 u> swap 1+ c@ [char] : = and >r \ dos absoulte: c:/....
455: over c@ [char] / = >r
456: over c@ [char] ~ = >r
457: \ 2dup 3 min S" ../" compare 0= r> or >r \ not catered for in expandtopic
458: 2 min S" ./" compare 0=
459: r> r> r> or or or ;
460:
461: Create ofile 0 c, 255 chars allot
462: Create tfile 0 c, 255 chars allot
463:
464: : pathsep? dup [char] / = swap [char] \ = or ;
465:
466: : need/ ofile dup c@ + c@ pathsep? 0= IF s" /" ofile +place THEN ;
467:
468: : extractpath ( adr len -- adr len2 )
469: BEGIN dup WHILE 1-
470: 2dup + c@ pathsep? IF EXIT THEN
471: REPEAT ;
472:
473: : remove~+ ( -- )
474: ofile count 3 min s" ~+/" compare 0=
475: IF
476: ofile count 3 /string ofile place
477: THEN ;
478:
479: : expandtopic ( -- ) \ stack effect correct? - anton
480: \ expands "./" into an absolute name
481: ofile count 2 min s" ./" compare 0=
482: IF
483: ofile count 1 /string tfile place
484: 0 ofile c! sourcefilename extractpath ofile place
485: ofile c@ IF need/ THEN
486: tfile count over c@ pathsep? IF 1 /string THEN
487: ofile +place
488: THEN ;
489:
490: : compact.. ( adr len -- adr2 len2 )
491: \ deletes phrases like "xy/.." out of our directory name 2dec97jaw
492: over swap
493: BEGIN dup WHILE
494: dup >r '/ scan 2dup 4 min s" /../" compare 0=
495: IF
496: dup r> - >r 4 /string over r> + 4 -
497: swap 2dup + >r move dup r> over -
498: ELSE
499: rdrop dup 1 min /string
500: THEN
501: REPEAT drop over - ;
502:
503: : reworkdir ( -- )
504: remove~+
505: ofile count compact..
506: nip ofile c! ;
507:
508: : open-ofile ( -- fid ior )
509: \G opens the file whose name is in ofile
510: expandtopic reworkdir
511: ofile count r/o open-file ;
512:
513: : check-path ( adr1 len1 adr2 len2 -- fd 0 | 0 <>0 )
514: 0 ofile ! >r >r ofile place need/
515: r> r> ofile +place
516: open-ofile ;
517:
518: : open-path-file ( addr1 u1 path-addr -- wfileid addr2 u2 0 | ior ) \ gforth
519: \G Look in path @var{path-addr} for the file specified by @var{addr1 u1}.
520: \G If found, the resulting path and an open file descriptor
521: \G are returned. If the file is not found, @var{ior} is non-zero.
522: >r
523: 2dup absolut-path?
524: IF rdrop
525: ofile place open-ofile
526: dup 0= IF >r ofile count r> THEN EXIT
527: ELSE r> path>counted
528: BEGIN next-path dup
529: WHILE 5 pick 5 pick check-path
530: 0= IF >r 2drop 2drop r> ofile count 0 EXIT ELSE drop THEN
531: REPEAT
532: 2drop 2drop 2drop -38
533: THEN ;
534:
535: : open-fpath-file ( addr1 u1 -- wfileid addr2 u2 0 | ior ) \ gforth
536: \G Look in the Forth search path for the file specified by @var{addr1 u1}.
537: \G If found, the resulting path and an open file descriptor
538: \G are returned. If the file is not found, @var{ior} is non-zero.
539: fpath open-path-file ;
540:
541: fpath= ~+
542:
543: [THEN]
544:
545: \ \ -------------------- include require 13may99jaw
546:
547: >CROSS
548:
549: : add-included-file ( adr len -- adr )
550: dup >fl-name char+ allocate throw >r
551: file-list @ r@ ! r@ file-list !
552: r@ >fl-name place r> ;
553:
554: : included? ( c-addr u -- f )
555: file-list
556: BEGIN @ dup
557: WHILE >r 2dup r@ >fl-name count compare 0=
558: IF rdrop 2drop true EXIT THEN
559: r>
560: REPEAT
561: 2drop drop false ;
562:
563: false DebugFlag showincludedfiles
564:
565: : included1 ( fd adr u -- )
566: \ include file adr u / fd
567: \ we don't use fd with include-file, because the forth system
568: \ doesn't know the name of the file to get a nice error report
569: [d?] showincludedfiles
570: IF cr ." Including: " 2dup type ." ..." THEN
571: rot close-file throw
572: source-desc >r
573: add-included-file to source-desc
574: sourcefilename
575: ['] included catch
576: r> to source-desc
577: throw ;
578:
579: : included ( adr len -- )
580: cross-file-list to file-list
581: open-fpath-file throw
582: included1 ;
583:
584: : required ( adr len -- )
585: cross-file-list to file-list
586: open-fpath-file throw \ 2dup cr ." R:" type
587: 2dup included?
588: IF 2drop close-file throw
589: ELSE included1
590: THEN ;
591:
592: : include bl word count included ;
593:
594: : require bl word count required ;
595:
596: 0 [IF]
597:
598: also forth definitions previous
599:
600: : included ( adr len -- ) included ;
601:
602: : required ( adr len -- ) required ;
603:
604: : include include ;
605:
606: : require require ;
607:
608: [THEN]
609:
610: >CROSS
611: hex
612:
613: \ \ -------------------- Error Handling 05aug97jaw
614:
615: \ Flags
616:
617: also forth definitions \ these values may be predefined before
618: \ the cross-compiler is loaded
619:
620: false DefaultValue stack-warn \ check on empty stack at any definition
621: false DefaultValue create-forward-warn \ warn on forward declaration of created words
622:
623: previous >CROSS
624:
625: : .dec
626: base @ decimal swap . base ! ;
627:
628: : .sourcepos
629: cr sourcefilename type ." :"
630: sourceline# .dec ;
631:
632: : warnhead
633: \G display error-message head
634: \G perhaps with linenumber and filename
635: .sourcepos ." Warning: " ;
636:
637: : empty? depth IF .sourcepos ." Stack not empty!" THEN ;
638:
639: stack-warn [IF]
640: : defempty? empty? ;
641: [ELSE]
642: : defempty? ; immediate
643: [THEN]
644:
645: \ \ -------------------- Compiler Plug Ins 01aug97jaw
646:
647: >CROSS
648:
649: \ Compiler States
650:
651: Variable comp-state
652: 0 Constant interpreting
653: 1 Constant compiling
654: 2 Constant resolving
655: 3 Constant assembling
656:
657: : compiling? comp-state @ compiling = ;
658:
659: : pi-undefined -1 ABORT" Plugin undefined" ;
660:
661: : Plugin ( -- : pluginname )
662: Create
663: \ for normal cross-compiling only one action
664: \ exists, this fields are identical. For the instant
665: \ simulation environment we need, two actions for each plugin
666: \ the target one and the one that generates the simulation code
667: ['] pi-undefined , \ action
668: ['] pi-undefined , \ target plugin action
669: 8765 , \ plugin magic
670: DOES> perform ;
671:
672: Plugin DummyPlugin
673:
674: : 'PI ( -- addr : pluginname )
675: ' >body dup 2 cells + @ 8765 <> ABORT" not a plugin" ;
676:
677: : plugin-of ( xt -- : pluginname )
678: dup 'PI 2! ;
679:
680: : action-of ( xt -- : plunginname )
681: 'PI cell+ ! ;
682:
683: : TPA ( -- : plugin )
684: \ target plugin action
685: \ executes current target action of plugin
686: 'PI cell+ POSTPONE literal POSTPONE perform ; immediate
687:
688: Variable ppi-temp 0 ppi-temp !
689:
690: : pa:
691: \g define plugin action
692: ppi-temp @ ABORT" pa: definition not closed"
693: 'PI ppi-temp ! :noname ;
694:
695: : ;pa
696: \g end a definition for plugin action
697: POSTPONE ; ppi-temp @ ! 0 ppi-temp ! ; immediate
698:
699:
700: Plugin dlit, ( d -- ) \ compile numerical value the target
701: Plugin lit, ( n -- )
702: Plugin alit, ( n -- )
703:
704: Plugin branch, ( target-addr -- ) \ compiles a branch
705: Plugin ?branch, ( target-addr -- ) \ compiles a ?branch
706: Plugin branchmark, ( -- branch-addr ) \ reserves room for a branch
707: Plugin ?branchmark, ( -- branch-addr ) \ reserves room for a ?branch
708: Plugin ?domark, ( -- branch-addr ) \ reserves room for a ?do branch
709: Plugin branchto, ( -- ) \ actual program position is target of a branch (do e.g. alignment)
710: ' NOOP plugin-of branchto,
711: Plugin branchtoresolve, ( branch-addr -- ) \ resolves a forward reference from branchmark
712: Plugin branchtomark, ( -- target-addr ) \ marks a branch destination
713:
714: Plugin colon, ( tcfa -- ) \ compiles call to tcfa at current position
715: Plugin xt, ( tcfa -- ) \ compiles xt
716: Plugin prim, ( tcfa -- ) \ compiles primitive invocation
717: Plugin colonmark, ( -- addr ) \ marks a colon call
718: Plugin colon-resolve ( tcfa addr -- )
719:
720: Plugin addr-resolve ( target-addr addr -- )
721: Plugin doer-resolve ( ghost res-pnt target-addr addr -- ghost res-pnt )
722:
723: Plugin ncontrols? ( [ xn ... x1 ] n -- ) \ checks wheter n control structures are open
724: Plugin if, ( -- if-token )
725: Plugin else, ( if-token -- if-token )
726: Plugin then, ( if-token -- )
727: Plugin ahead,
728: Plugin begin,
729: Plugin while,
730: Plugin until,
731: Plugin again,
732: Plugin repeat,
733: Plugin cs-swap ( x1 x2 -- x2 x1 )
734:
735: Plugin case, ( -- n )
736: Plugin of, ( n -- x1 n )
737: Plugin endof, ( x1 n -- x2 n )
738: Plugin endcase, ( x1 .. xn n -- )
739:
740: Plugin do, ( -- do-token )
741: Plugin ?do, ( -- ?do-token )
742: Plugin for, ( -- for-token )
743: Plugin loop, ( do-token / ?do-token -- )
744: Plugin +loop, ( do-token / ?do-token -- )
745: Plugin next, ( for-token )
746: Plugin leave, ( -- )
747: Plugin ?leave, ( -- )
748:
749: [IFUNDEF] ca>native
750: Plugin ca>native
751: [THEN]
752:
753: Plugin doprim, \ compiles start of a primitive
754: Plugin docol, \ compiles start of a colon definition
755: Plugin doer,
756: Plugin fini, \ compiles end of definition ;s
757: Plugin doeshandler,
758: Plugin dodoes,
759:
760: Plugin colon-start
761: ' noop plugin-of colon-start
762: Plugin colon-end
763: ' noop plugin-of colon-end
764:
765: Plugin ]comp \ starts compilation
766: ' noop plugin-of ]comp
767: Plugin comp[ \ ends compilation
768: ' noop plugin-of comp[
769:
770: Plugin t>body \ we need the system >body
771: \ and the target >body
772:
773: >TARGET
774: : >body t>body ;
775:
776:
777: \ Ghost Builder 06oct92py
778:
779: >CROSS
780: hex
781: \ Values for ghost magic
782: 4711 Constant <fwd> 4712 Constant <res>
783: 4713 Constant <imm> 4714 Constant <do:>
784: 4715 Constant <skip>
785:
786: \ Bitmask for ghost flags
787: 1 Constant <unique>
788: 2 Constant <primitive>
789:
790: \ FXIME: move this to general stuff?
791: : set-flag ( addr flag -- )
792: over @ or swap ! ;
793:
794: : reset-flag ( addr flag -- )
795: invert over @ and swap ! ;
796:
797: : get-flag ( addr flag -- f )
798: swap @ and 0<> ;
799:
800:
801: Struct
802:
803: \ link to next ghost (always the first element)
804: cell% field >next-ghost
805:
806: \ type of ghost
807: cell% field >magic
808:
809: \ pointer where ghost is in target, or if unresolved
810: \ points to the where we have to resolve (linked-list)
811: cell% field >link
812:
813: \ execution semantics (while target compiling) of ghost
814: cell% field >exec
815:
816: \ compilation action of this ghost; this is what is
817: \ done to compile a call (or whatever) to this definition.
818: \ E.g. >comp contains the semantic of postpone s"
819: \ whereas >exec-compile contains the semantic of s"
820: cell% field >comp
821:
822: \ Compilation sematics (while parsing) of this ghost. E.g.
823: \ "\" will skip the rest of line.
824: \ These semantics are defined by Cond: and
825: \ if a word is made immediate in instant, then the >exec2 field
826: \ gets copied to here
827: cell% field >exec-compile
828:
829: \ Additional execution semantics of this ghost. This is used
830: \ for code generated by instant and for the doer-xt of created
831: \ words
832: cell% field >exec2
833:
834: cell% field >created
835:
836: \ the xt of the created ghost word itself
837: cell% field >ghost-xt
838:
839: \ pointer to the counted string of the assiciated
840: \ assembler label
841: cell% field >asm-name
842:
843: \ mapped primitives have a special address, so
844: \ we are able to detect them
845: cell% field >asm-dummyaddr
846:
847: \ for builder (create, variable...) words
848: \ the execution symantics of words built are placed here
849: \ this is a doer ghost or a dummy ghost
850: cell% field >do:ghost
851:
852: cell% field >ghost-flags
853:
854: cell% field >ghost-name
855:
856: End-Struct ghost-struct
857:
858: Variable ghost-list
859: 0 ghost-list !
860:
861: Variable executed-ghost \ last executed ghost, needed in tcreate and gdoes>
862: \ Variable last-ghost \ last ghost that is created
863: Variable last-header-ghost \ last ghost definitions with header
864:
865: \ space for ghosts resolve structure
866: \ we create ghosts in a sepearte space
867: \ and not to the current host dp, because this
868: \ gives trouble with instant while compiling and creating
869: \ a ghost for a forward reference
870: \ BTW: we cannot allocate another memory region
871: \ because allot will check the overflow!!
872: Variable cross-space-dp
873: Create cross-space 250000 allot here 100 allot align
874: Constant cross-space-end
875: cross-space cross-space-dp !
876: Variable cross-space-dp-orig
877:
878: : cross-space-used cross-space-dp @ cross-space - ;
879:
880: : >space ( -- )
881: dp @ cross-space-dp-orig !
882: cross-space-dp @ dp ! ;
883:
884: : space> ( -- )
885: dp @ dup cross-space-dp !
886: cross-space-end u> ABORT" CROSS: cross-space overflow"
887: cross-space-dp-orig @ dp ! ;
888:
889: \ this is just for debugging, to see this in the backtrace
890: : execute-exec execute ;
891: : execute-exec2 execute ;
892: : execute-exec-compile execute ;
893:
894: : NoExec
895: executed-ghost @ >exec2 @
896: ?dup
897: IF execute-exec2
898: ELSE true ABORT" CROSS: Don't execute ghost, or immediate target word"
899: THEN ;
900:
901: Defer is-forward
902: Defer do-refered
903:
904: : prim-forward ( ghost -- )
905: colonmark, 1 do-refered ; \ compile space for call
906: ' prim-forward IS is-forward
907:
908: : (ghostheader) ( -- )
909: ghost-list linked <fwd> , 0 , ['] NoExec , what's is-forward ,
910: 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , ;
911:
912: : ghostheader ( -- ) (ghostheader) 0 , ;
913:
914: ' Ghosts >wordlist Constant ghosts-wordlist
915:
916: \ the current wordlist for ghost definitions in the host
917: ghosts-wordlist Value current-ghosts
918:
919: : Make-Ghost ( "name" -- ghost )
920: >space
921: \ save current and create in ghost vocabulary
922: get-current >r current-ghosts set-current
923: >in @ Create >in !
924: \ some forth systems like iForth need the immediate directly
925: \ after the word is created
926: \ restore current
927: r> set-current
928: here (ghostheader)
929: bl word count string, align
930: space>
931: \ set ghost-xt field by doing a search
932: dup >ghost-name count
933: current-ghosts search-wordlist
934: 0= ABORT" CROSS: Just created, must be there!"
935: over >ghost-xt !
936: DOES>
937: dup executed-ghost !
938: >exec @ execute-exec ;
939:
940: \ ghost words 14oct92py
941: \ changed: 10may93py/jaw
942:
943: Defer search-ghosts
944:
945: : (search-ghosts) ( adr len -- cfa true | 0 )
946: current-ghosts search-wordlist ;
947:
948: ' (search-ghosts) IS search-ghosts
949:
950: : gsearch ( addr len -- ghost true | 0 )
951: search-ghosts
952: dup IF swap >body swap THEN ;
953:
954: : gfind ( string -- ghost true / string false )
955: \ searches for string in word-list ghosts
956: \ dup count type space
957: dup >r count gsearch
958: dup IF rdrop ELSE r> swap THEN ;
959:
960: : gdiscover ( xt -- ghost true | xt false )
961: >r ghost-list
962: BEGIN @ dup
963: WHILE dup >magic @ <fwd> <>
964: IF dup >link @ r@ =
965: IF rdrop true EXIT THEN
966: THEN
967: REPEAT
968: drop r> false ;
969:
970: : xt>ghost ( xt -- ghost )
971: gdiscover 0= ABORT" CROSS: ghost not found for this xt" ;
972:
973: : Ghost ( "name" -- ghost )
974: >in @ bl word gfind IF nip EXIT THEN
975: drop >in ! Make-Ghost ;
976:
977: : >ghostname ( ghost -- adr len )
978: >ghost-name count ;
979:
980: : forward? ( ghost -- flag )
981: >magic @ <fwd> = ;
982:
983: : undefined? ( ghost -- flag )
984: >magic @ dup <fwd> = swap <skip> = or ;
985:
986: : immediate? ( ghost -- flag )
987: >magic @ <imm> = ;
988:
989: Variable TWarnings
990: TWarnings on
991: Variable Exists-Warnings
992: Exists-Warnings on
993:
994: : exists-warning ( ghost -- ghost )
995: TWarnings @ Exists-Warnings @ and
996: IF dup >ghostname warnhead type ." exists " THEN ;
997:
998: \ : HeaderGhost Ghost ;
999:
1000: Variable reuse-ghosts reuse-ghosts off
1001:
1002: : HeaderGhost ( "name" -- ghost )
1003: >in @
1004: bl word count
1005: \ 2dup type space
1006: current-ghosts search-wordlist
1007: IF >body dup undefined? reuse-ghosts @ or
1008: IF nip EXIT
1009: ELSE exists-warning
1010: THEN
1011: drop >in !
1012: ELSE >in !
1013: THEN
1014: \ we keep the execution semantics of the prviously
1015: \ defined words, this is a workaround
1016: \ for the redefined \ until vocs work
1017: Make-Ghost ;
1018:
1019: : .ghost ( ghost -- ) >ghostname type ;
1020:
1021: \ ' >ghostname ALIAS @name
1022:
1023: : findghost ( "ghostname" -- ghost )
1024: bl word gfind 0= ABORT" CROSS: Ghost don't exists" ;
1025:
1026: : [G'] ( -- ghost : name )
1027: \G ticks a ghost and returns its address
1028: findghost
1029: state @ IF postpone literal THEN ; immediate
1030:
1031: : g>xt ( ghost -- xt )
1032: \G Returns the xt (cfa) of a ghost. Issues a warning if undefined.
1033: dup undefined? ABORT" CROSS: forward " >link @ ;
1034:
1035: : g>body ( ghost -- body )
1036: \G Returns the body-address (pfa) of a ghost.
1037: \G Issues a warning if undefined (a forward-reference).
1038: g>xt X >body ;
1039:
1040: 1 Constant <label>
1041:
1042: Struct
1043: \ bitmask of address type (not used for now)
1044: cell% field addr-type
1045: \ if this address is an xt, this field points to the ghost
1046: cell% field addr-xt-ghost
1047: \ a bit mask that tells as what part of the cell
1048: \ is refenced from an address pointer, used for assembler generation
1049: cell% field addr-refs
1050: End-Struct addr-struct
1051:
1052: : %allocerase ( align size -- addr )
1053: dup >r %alloc dup r> erase ;
1054:
1055: \ returns the addr struct, define it if 0 reference
1056: : define-addr-struct ( addr -- struct-addr )
1057: dup @ ?dup IF nip EXIT THEN
1058: addr-struct %allocerase tuck swap ! ;
1059:
1060: >cross
1061:
1062: \ Predefined ghosts 12dec92py
1063:
1064: Ghost - drop \ need a ghost otherwise "-" would be treated as a number
1065:
1066: Ghost 0= drop
1067: Ghost branch Ghost ?branch 2drop
1068: Ghost unloop Ghost ;S 2drop
1069: Ghost lit Ghost ! 2drop
1070: Ghost noop drop
1071: Ghost :docol Ghost :doesjump Ghost :dodoes 2drop drop
1072: Ghost :dovar drop
1073: Ghost over Ghost = Ghost drop 2drop drop
1074: Ghost 2drop drop
1075: Ghost 2dup drop
1076: Ghost call drop
1077: Ghost @ drop
1078: Ghost useraddr drop
1079: Ghost execute drop
1080: Ghost + drop
1081: Ghost decimal drop
1082: Ghost hex drop
1083: Ghost lit@ drop
1084: Ghost lit-perform drop
1085: Ghost lit+ drop
1086: Ghost does-exec drop
1087:
1088: \ \ Parameter for target systems 06oct92py
1089:
1090:
1091: \ we define it ans like...
1092: wordlist Constant target-environment
1093:
1094: \ save information of current dictionary to restore with environ>
1095: Variable env-current
1096:
1097: : >ENVIRON get-current env-current ! target-environment set-current ;
1098: : ENVIRON> env-current @ set-current ;
1099:
1100: >TARGET
1101:
1102: : environment? ( addr len -- [ x ] true | false )
1103: \G returns the content of environment variable and true or
1104: \G false if not present
1105: target-environment search-wordlist
1106: IF EXECUTE true ELSE false THEN ;
1107:
1108: : $has? ( addr len -- x | false )
1109: \G returns the content of environment variable
1110: \G or false if not present
1111: T environment? H dup IF drop THEN ;
1112:
1113: : e? ( "name" -- x )
1114: \G returns the content of environment variable.
1115: \G The variable is expected to exist. If not, issue an error.
1116: bl word count T environment? H
1117: 0= ABORT" environment variable not defined!" ;
1118:
1119: : has? ( "name" --- x | false )
1120: \G returns the content of environment variable
1121: \G or false if not present
1122: bl word count T $has? H ;
1123:
1124:
1125: >ENVIRON get-order get-current swap 1+ set-order
1126: true SetValue compiler
1127: true SetValue cross
1128: true SetValue standard-threading
1129: >TARGET previous
1130:
1131: 0
1132: [IFDEF] mach-file drop mach-file count 1 [THEN]
1133: [IFDEF] machine-file drop machine-file 1 [THEN]
1134: [IF] included hex
1135: [ELSE] cr ." No machine description!" ABORT
1136: [THEN]
1137:
1138: >ENVIRON
1139:
1140: T has? ec H
1141: [IF]
1142: false DefaultValue relocate
1143: false DefaultValue file
1144: false DefaultValue OS
1145: false DefaultValue prims
1146: false DefaultValue floating
1147: false DefaultValue glocals
1148: false DefaultValue dcomps
1149: false DefaultValue hash
1150: false DefaultValue xconds
1151: false DefaultValue header
1152: false DefaultValue backtrace
1153: false DefaultValue new-input
1154: false DefaultValue peephole
1155: [THEN]
1156:
1157: true DefaultValue interpreter
1158: true DefaultValue ITC
1159: false DefaultValue rom
1160: true DefaultValue standardthreading
1161:
1162: >TARGET
1163: s" relocate" T environment? H
1164: \ JAW why set NIL to this?!
1165: [IF] drop \ SetValue NIL
1166: [ELSE] >ENVIRON X NIL SetValue relocate
1167: [THEN]
1168: >TARGET
1169:
1170: 0 Constant NIL
1171:
1172: >CROSS
1173:
1174: \ \ Create additional parameters 19jan95py
1175:
1176: \ currently cross only works for host machines with address-unit-bits
1177: \ eual to 8 because of s! and sc!
1178: \ but I start to query the environment just to modularize a little bit
1179:
1180: : check-address-unit-bits ( -- )
1181: \ s" ADDRESS-UNIT-BITS" environment?
1182: \ IF 8 <> ELSE true THEN
1183: \ ABORT" ADDRESS-UNIT-BITS unknown or not equal to 8!"
1184:
1185: \ shit, this doesn't work because environment? is only defined for
1186: \ gforth.fi and not kernl???.fi
1187: ;
1188:
1189: check-address-unit-bits
1190: 8 Constant bits/byte \ we define: byte is address-unit
1191:
1192: 1 bits/byte lshift Constant maxbyte
1193: \ this sets byte size for the target machine, (probably right guess) jaw
1194:
1195: T
1196: NIL Constant TNIL
1197: cell Constant tcell
1198: cell<< Constant tcell<<
1199: cell>bit Constant tcell>bit
1200: bits/char Constant tbits/char
1201: bits/char H bits/byte T /
1202: Constant tchar
1203: float Constant tfloat
1204: 1 bits/char lshift Constant tmaxchar
1205: [IFUNDEF] bits/byte
1206: 8 Constant tbits/byte
1207: [ELSE]
1208: bits/byte Constant tbits/byte
1209: [THEN]
1210: H
1211: tbits/char bits/byte / Constant tbyte
1212:
1213:
1214: \ Variables 06oct92py
1215:
1216: Variable image
1217: Variable tlast TNIL tlast ! \ Last name field
1218: Variable tlastcfa \ Last code field
1219: Variable bit$
1220:
1221: \ statistics 10jun97jaw
1222:
1223: Variable headers-named 0 headers-named !
1224: Variable user-vars 0 user-vars !
1225:
1226: : target>bitmask-size ( u1 -- u2 )
1227: 1- tcell>bit rshift 1+ ;
1228:
1229: : allocatetarget ( size -- adr )
1230: dup allocate ABORT" CROSS: No memory for target"
1231: swap over swap erase ;
1232:
1233: \ \ memregion.fs
1234:
1235:
1236: Variable last-defined-region \ pointer to last defined region
1237: Variable region-link \ linked list with all regions
1238: Variable mirrored-link \ linked list for mirrored regions
1239: 0 dup mirrored-link ! region-link !
1240:
1241:
1242: : >rname 7 cells + ;
1243: : >rbm 4 cells + ;
1244: : >rmem 5 cells + ;
1245: : >rtype 6 cells + ;
1246: : >rlink 3 cells + ;
1247: : >rdp 2 cells + ;
1248: : >rlen cell+ ;
1249: : >rstart ;
1250:
1251: : (region) ( addr len region -- )
1252: \G change startaddress and length of an existing region
1253: >r r@ last-defined-region !
1254: r@ >rlen ! dup r@ >rstart ! r> >rdp ! ;
1255:
1256: : region ( addr len -- )
1257: \G create a new region
1258: \ check whether predefined region exists
1259: save-input bl word find >r >r restore-input throw r> r> 0=
1260: IF \ make region
1261: drop
1262: save-input create restore-input throw
1263: here last-defined-region !
1264: over ( startaddr ) , ( length ) , ( dp ) ,
1265: region-link linked 0 , 0 , 0 , bl word count string,
1266: ELSE \ store new parameters in region
1267: bl word drop
1268: >body (region)
1269: THEN ;
1270:
1271: : borders ( region -- startaddr endaddr )
1272: \G returns lower and upper region border
1273: dup >rstart @ swap >rlen @ over + ;
1274:
1275: : extent ( region -- startaddr len )
1276: \G returns the really used area
1277: dup >rstart @ swap >rdp @ over - ;
1278:
1279: : area ( region -- startaddr totallen )
1280: \G returns the total area
1281: dup >rstart @ swap >rlen @ ;
1282:
1283: : mirrored
1284: \G mark a region as mirrored
1285: mirrored-link
1286: align linked last-defined-region @ , ;
1287:
1288: : .addr ( u -- )
1289: \G prints a 16 or 32 Bit nice hex value
1290: base @ >r hex
1291: tcell 2 u>
1292: IF s>d <# # # # # [char] . hold # # # # #> type
1293: ELSE s>d <# # # # # # #> type
1294: THEN r> base ! space ;
1295:
1296: : .regions \G display region statistic
1297:
1298: \ we want to list the regions in the right order
1299: \ so first collect all regions on stack
1300: 0 region-link @
1301: BEGIN dup WHILE dup @ REPEAT drop
1302: BEGIN dup
1303: WHILE cr
1304: 0 >rlink - >r
1305: r@ >rname count tuck type
1306: 12 swap - 0 max spaces space
1307: ." Start: " r@ >rstart @ dup .addr space
1308: ." End: " r@ >rlen @ + .addr space
1309: ." DP: " r> >rdp @ .addr
1310: REPEAT drop
1311: s" rom" T $has? H 0= ?EXIT
1312: cr ." Mirrored:"
1313: mirrored-link @
1314: BEGIN dup
1315: WHILE space dup cell+ @ >rname count type @
1316: REPEAT drop cr
1317: ;
1318:
1319: \ -------- predefined regions
1320:
1321: 0 0 region address-space
1322: \ total memory addressed and used by the target system
1323:
1324: 0 0 region dictionary
1325: \ rom area for the compiler
1326:
1327: T has? rom H
1328: [IF]
1329: 0 0 region ram-dictionary mirrored
1330: \ ram area for the compiler
1331: [ELSE]
1332: ' dictionary ALIAS ram-dictionary
1333: [THEN]
1334:
1335: 0 0 region return-stack
1336:
1337: 0 0 region data-stack
1338:
1339: 0 0 region tib-region
1340:
1341: ' dictionary ALIAS rom-dictionary
1342:
1343:
1344: : setup-target ( -- ) \G initialize target's memory space
1345: s" rom" T $has? H
1346: IF \ check for ram and rom...
1347: \ address-space area nip 0<>
1348: ram-dictionary area nip 0<>
1349: rom-dictionary area nip 0<>
1350: and 0=
1351: ABORT" CROSS: define address-space, rom- , ram-dictionary, with rom-support!"
1352: THEN
1353: address-space area nip
1354: IF
1355: address-space area
1356: ELSE
1357: dictionary area
1358: THEN
1359: nip 0=
1360: ABORT" CROSS: define at least address-space or dictionary!!"
1361:
1362: \ allocate target for each region
1363: region-link
1364: BEGIN @ dup
1365: WHILE dup
1366: 0 >rlink - >r
1367: r@ >rlen @
1368: IF \ allocate mem
1369: r@ >rlen @ allocatetarget dup image !
1370: r@ >rmem !
1371:
1372: r@ >rlen @
1373: target>bitmask-size allocatetarget
1374: dup bit$ !
1375: r@ >rbm !
1376:
1377: r@ >rlen @
1378: tcell / 1+ cells allocatetarget r@ >rtype !
1379:
1380: rdrop
1381: ELSE r> drop THEN
1382: REPEAT drop ;
1383:
1384: \ MakeKernel 22feb99jaw
1385:
1386: : makekernel ( targetsize -- )
1387: \G convenience word to setup the memory of the target
1388: \G used by main.fs of the c-engine based systems
1389: 100 swap dictionary (region)
1390: setup-target ;
1391:
1392: >MINIMAL
1393: : makekernel makekernel ;
1394: >CROSS
1395:
1396: \ \ switched tdp for rom support 03jun97jaw
1397:
1398: \ second value is here to store some maximal value for statistics
1399: \ tempdp is also embedded here but has nothing to do with rom support
1400: \ (needs switched dp)
1401:
1402: variable tempdp 0 , \ temporary dp for resolving
1403: variable tempdp-save
1404:
1405: 0 [IF]
1406: variable romdp 0 , \ Dictionary-Pointer for ramarea
1407: variable ramdp 0 , \ Dictionary-Pointer for romarea
1408:
1409: \
1410: variable sramdp \ start of ram-area for forth
1411: variable sromdp \ start of rom-area for forth
1412:
1413: [THEN]
1414:
1415:
1416: 0 value tdp
1417: variable fixed \ flag: true: no automatic switching
1418: \ false: switching is done automatically
1419:
1420: \ Switch-Policy:
1421: \
1422: \ a header is always compiled into rom
1423: \ after a created word (create and variable) compilation goes to ram
1424: \
1425: \ Be careful: If you want to make the data behind create into rom
1426: \ you have to put >rom before create!
1427:
1428: variable constflag constflag off
1429:
1430: : activate ( region -- )
1431: \G next code goes to this region
1432: >rdp to tdp ;
1433:
1434: : (switchram)
1435: fixed @ ?EXIT s" rom" T $has? H 0= ?EXIT
1436: ram-dictionary activate ;
1437:
1438: : switchram
1439: constflag @
1440: IF constflag off ELSE (switchram) THEN ;
1441:
1442: : switchrom
1443: fixed @ ?EXIT rom-dictionary activate ;
1444:
1445: : >tempdp ( addr -- )
1446: tdp tempdp-save ! tempdp to tdp tdp ! ;
1447: : tempdp> ( -- )
1448: tempdp-save @ to tdp ;
1449:
1450: : >ram fixed off (switchram) fixed on ;
1451: : >rom fixed off switchrom fixed on ;
1452: : >auto fixed off switchrom ;
1453:
1454:
1455:
1456: \ : romstart dup sromdp ! romdp ! ;
1457: \ : ramstart dup sramdp ! ramdp ! ;
1458:
1459: \ default compilation goes to rom
1460: \ when romable support is off, only the rom switch is used (!!)
1461: >auto
1462:
1463: : there tdp @ ;
1464:
1465: >TARGET
1466:
1467: \ \ Target Memory Handling
1468:
1469: \ Byte ordering and cell size 06oct92py
1470:
1471: : cell+ tcell + ;
1472: : cells tcell<< lshift ;
1473: : chars tchar * ;
1474: : char+ tchar + ;
1475: : floats tfloat * ;
1476:
1477: >CROSS
1478: : cell/ tcell<< rshift ;
1479: >TARGET
1480: 20 CONSTANT bl
1481: \ TNIL Constant NIL
1482:
1483: >CROSS
1484:
1485: bigendian
1486: [IF]
1487: : DS! ( d addr -- ) tcell bounds swap 1-
1488: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
1489: : DS@ ( addr -- d ) >r 0 0 r> tcell bounds
1490: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP ;
1491: : Sc! ( n addr -- ) >r s>d r> tchar bounds swap 1-
1492: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
1493: : Sc@ ( addr -- n ) >r 0 0 r> tchar bounds
1494: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ;
1495: [ELSE]
1496: : DS! ( d addr -- ) tcell bounds
1497: DO maxbyte ud/mod rot I c! LOOP 2drop ;
1498: : DS@ ( addr -- n ) >r 0 0 r> tcell bounds swap 1-
1499: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP ;
1500: : Sc! ( n addr -- ) >r s>d r> tchar bounds
1501: DO maxbyte ud/mod rot I c! LOOP 2drop ;
1502: : Sc@ ( addr -- n ) >r 0 0 r> tchar bounds swap 1-
1503: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ;
1504: [THEN]
1505:
1506: : S! ( n addr -- ) >r s>d r> DS! ;
1507: : S@ ( addr -- n ) DS@ d>s ;
1508:
1509: : taddr>region ( taddr -- region | 0 )
1510: \G finds for a target-address the correct region
1511: \G returns 0 if taddr is not in range of a target memory region
1512: region-link
1513: BEGIN @ dup
1514: WHILE dup >r
1515: 0 >rlink - >r
1516: r@ >rlen @
1517: IF dup r@ borders within
1518: IF r> r> drop nip EXIT THEN
1519: THEN
1520: r> drop
1521: r>
1522: REPEAT
1523: 2drop 0 ;
1524:
1525: : taddr>region-abort ( taddr -- region | 0 )
1526: dup taddr>region dup 0=
1527: IF drop cr ." Wrong address: " .addr
1528: -1 ABORT" Address out of range!"
1529: THEN nip ;
1530:
1531: : (>regionimage) ( taddr -- 'taddr )
1532: dup
1533: \ find region we want to address
1534: taddr>region-abort
1535: >r
1536: \ calculate offset in region
1537: r@ >rstart @ -
1538: \ add regions real address in our memory
1539: r> >rmem @ + ;
1540:
1541: : (>regionbm) ( taddr -- 'taddr bitmaskbaseaddr )
1542: dup
1543: \ find region we want to address
1544: taddr>region-abort
1545: >r
1546: \ calculate offset in region
1547: r@ >rstart @ -
1548: \ add regions real address in our memory
1549: r> >rbm @ ;
1550:
1551: : (>regiontype) ( taddr -- 'taddr )
1552: dup
1553: \ find region we want to address
1554: taddr>region-abort
1555: >r
1556: \ calculate offset in region
1557: r@ >rstart @ - tcell / cells
1558: \ add regions real address in our memory
1559: r> >rtype @ + ;
1560:
1561: \ Bit string manipulation 06oct92py
1562: \ 9may93jaw
1563: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
1564: : bits ( n -- n ) chars Bittable + c@ ;
1565:
1566: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
1567: : +bit ( addr n -- ) >bit over c@ or swap c! ;
1568: : -bit ( addr n -- ) >bit invert over c@ and swap c! ;
1569:
1570: : @relbit ( taddr -- f ) (>regionbm) swap cell/ >bit swap c@ and ;
1571:
1572: : (relon) ( taddr -- )
1573: [ [IFDEF] fd-relocation-table ]
1574: s" +" fd-relocation-table write-file throw
1575: dup s>d <# #s #> fd-relocation-table write-line throw
1576: [ [THEN] ]
1577: (>regionbm) swap cell/ +bit ;
1578:
1579: : (reloff) ( taddr -- )
1580: [ [IFDEF] fd-relocation-table ]
1581: s" -" fd-relocation-table write-file throw
1582: dup s>d <# #s #> fd-relocation-table write-line throw
1583: [ [THEN] ]
1584: (>regionbm) swap cell/ -bit ;
1585:
1586: : (>image) ( taddr -- absaddr ) image @ + ;
1587:
1588: DEFER >image
1589: DEFER relon
1590: DEFER reloff
1591: DEFER correcter
1592:
1593: T has? relocate H
1594: [IF]
1595: ' (relon) IS relon
1596: ' (reloff) IS reloff
1597: ' (>regionimage) IS >image
1598: [ELSE]
1599: ' drop IS relon
1600: ' drop IS reloff
1601: ' (>regionimage) IS >image
1602: [THEN]
1603:
1604: \ Target memory access 06oct92py
1605:
1606: : align+ ( taddr -- rest )
1607: tcell tuck 1- and - [ tcell 1- ] Literal and ;
1608: : cfalign+ ( taddr -- rest )
1609: \ see kernel.fs:cfaligned
1610: /maxalign tuck 1- and - [ /maxalign 1- ] Literal and ;
1611:
1612: >TARGET
1613: : aligned ( taddr -- ta-addr ) dup align+ + ;
1614: \ assumes cell alignment granularity (as GNU C)
1615:
1616: : cfaligned ( taddr1 -- taddr2 )
1617: \ see kernel.fs
1618: dup cfalign+ + ;
1619:
1620: : @ ( taddr -- w ) >image S@ ;
1621: : ! ( w taddr -- ) >image S! ;
1622: : c@ ( taddr -- char ) >image Sc@ ;
1623: : c! ( char taddr -- ) >image Sc! ;
1624: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
1625: : 2! ( x1 x2 taddr -- ) T tuck ! cell+ ! H ;
1626:
1627: \ Target compilation primitives 06oct92py
1628: \ included A! 16may93jaw
1629:
1630: : here ( -- there ) there ;
1631: : allot ( n -- ) tdp +! ;
1632: : , ( w -- ) T here H tcell T allot ! H ;
1633: : c, ( char -- ) T here H tchar T allot c! H ;
1634: : align ( -- ) T here H align+ 0 ?DO bl T c, H tchar +LOOP ;
1635: : cfalign ( -- )
1636: T here H cfalign+ 0 ?DO bl T c, H tchar +LOOP ;
1637:
1638: : >address dup 0>= IF tbyte / THEN ; \ ?? jaw
1639: : A! swap >address swap dup relon T ! H ;
1640: : A, ( w -- ) >address T here H relon T , H ;
1641:
1642: \ high-level ghosts
1643:
1644: >CROSS
1645:
1646: : call-forward ( ghost -- )
1647: there 0 colon, 0 do-refered ;
1648: ' call-forward IS is-forward
1649:
1650: Ghost (do) Ghost (?do) 2drop
1651: Ghost (for) drop
1652: Ghost (loop) Ghost (+loop) 2drop
1653: Ghost (next) drop
1654: Ghost (does>) Ghost (compile) 2drop
1655: Ghost (.") Ghost (S") Ghost (ABORT") 2drop drop
1656: Ghost (C") drop
1657: Ghost ' drop
1658:
1659: \ ' prim-forward IS is-forward
1660:
1661: \ user ghosts
1662:
1663: Ghost state drop
1664:
1665: \ \ -------------------- Host/Target copy etc. 29aug01jaw
1666:
1667:
1668: >CROSS
1669:
1670: : TD! >image DS! ;
1671: : TD@ >image DS@ ;
1672:
1673: : th-count ( taddr -- host-addr len )
1674: \G returns host address of target string
1675: assert1( tbyte 1 = )
1676: dup X c@ swap X char+ >image swap ;
1677:
1678: : ht-move ( haddr taddr len -- )
1679: \G moves data from host-addr to destination in target-addr
1680: \G character by character
1681: swap -rot bounds ?DO I c@ over X c! X char+ LOOP drop ;
1682:
1683: 2Variable last-string
1684:
1685: : ht-string, ( addr count -- )
1686: dup there swap last-string 2!
1687: dup T c, H bounds ?DO I c@ T c, H LOOP ;
1688:
1689: >TARGET
1690:
1691: : count dup X c@ swap X char+ swap ;
1692:
1693: : on -1 -1 rot TD! ;
1694: : off T 0 swap ! H ;
1695:
1696: : tcmove ( source dest len -- )
1697: \G cmove in target memory
1698: tchar * bounds
1699: ?DO dup T c@ H I T c! H 1+
1700: tchar +LOOP drop ;
1701:
1702: : td, ( d -- )
1703: \G Store a host value as one cell into the target
1704: there tcell X allot TD! ;
1705:
1706: \ \ Load Assembler
1707:
1708: >TARGET
1709: H also Forth definitions
1710:
1711: \ FIXME: should we include the assembler really in the forth
1712: \ dictionary?!?!?!? This conflicts with the existing assembler
1713: \ of the host forth system!!
1714: [IFDEF] asm-include asm-include [THEN] hex
1715:
1716: previous
1717:
1718:
1719: >CROSS
1720:
1721: : (cc) T a, H ; ' (cc) plugin-of colon,
1722: : (xt) T a, H ; ' (xt) plugin-of xt,
1723: : (prim) T a, H ; ' (prim) plugin-of prim,
1724:
1725: : (cr) >tempdp colon, tempdp> ; ' (cr) plugin-of colon-resolve
1726: : (ar) T ! H ; ' (ar) plugin-of addr-resolve
1727: : (dr) ( ghost res-pnt target-addr addr )
1728: >tempdp drop over
1729: dup >magic @ <do:> =
1730: IF doer,
1731: ELSE dodoes,
1732: THEN
1733: tempdp> ; ' (dr) plugin-of doer-resolve
1734:
1735: : (cm) ( -- addr )
1736: T here align H
1737: -1 xt, ; ' (cm) plugin-of colonmark,
1738:
1739: >TARGET
1740: : compile, ( xt -- )
1741: dup xt>ghost >comp @ EXECUTE ;
1742: >CROSS
1743:
1744: \ resolve structure
1745:
1746: : >next ; \ link to next field
1747: : >tag cell+ ; \ indecates type of reference: 0: call, 1: address, 2: doer
1748: : >taddr cell+ cell+ ;
1749: : >ghost 3 cells + ;
1750: : >file 4 cells + ;
1751: : >line 5 cells + ;
1752:
1753: : (refered) ( ghost addr tag -- )
1754: \G creates a reference to ghost at address taddr
1755: >space
1756: rot >link linked
1757: ( taddr tag ) ,
1758: ( taddr ) ,
1759: last-header-ghost @ ,
1760: loadfile ,
1761: sourceline# ,
1762: space>
1763: ;
1764:
1765: ' (refered) IS do-refered
1766:
1767: : refered ( ghost tag -- )
1768: \G creates a resolve structure
1769: T here aligned H swap (refered)
1770: ;
1771:
1772: : killref ( addr ghost -- )
1773: \G kills a forward reference to ghost at position addr
1774: \G this is used to eleminate a :dovar refence after making a DOES>
1775: dup >magic @ <fwd> <> IF 2drop EXIT THEN
1776: swap >r >link
1777: BEGIN dup @ dup ( addr last this )
1778: WHILE dup >taddr @ r@ =
1779: IF @ over !
1780: ELSE nip THEN
1781: REPEAT rdrop 2drop
1782: ;
1783:
1784: Defer resolve-warning
1785:
1786: : reswarn-test ( ghost res-struct -- ghost res-struct )
1787: over cr ." Resolving " .ghost dup ." in " >ghost @ .ghost ;
1788:
1789: : reswarn-forward ( ghost res-struct -- ghost res-struct )
1790: over warnhead .ghost dup ." is referenced in "
1791: >ghost @ .ghost ;
1792:
1793: \ ' reswarn-test IS resolve-warning
1794:
1795: \ resolve 14oct92py
1796:
1797: : resolve-loop ( ghost resolve-list tcfa -- )
1798: >r
1799: BEGIN dup WHILE
1800: \ dup >tag @ 2 = IF reswarn-forward THEN
1801: resolve-warning
1802: r@ over >taddr @
1803: 2 pick >tag @
1804: CASE 0 OF colon-resolve ENDOF
1805: 1 OF addr-resolve ENDOF
1806: 2 OF doer-resolve ENDOF
1807: ENDCASE
1808: @ \ next list element
1809: REPEAT 2drop rdrop
1810: ;
1811:
1812: \ : resolve-loop ( ghost tcfa -- ghost tcfa )
1813: \ >r dup >link @
1814: \ BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
1815:
1816: \ exists 9may93jaw
1817:
1818: : exists ( ghost tcfa -- )
1819: \G print warning and set new target link in ghost
1820: swap exists-warning
1821: >link ! ;
1822:
1823: : colon-resolved ( ghost -- )
1824: >link @ colon, ; \ compile-call
1825:
1826: : prim-resolved ( ghost -- )
1827: >link @ prim, ;
1828:
1829: 0 Value resolved
1830:
1831: : resolve ( ghost tcfa -- )
1832: \G resolve referencies to ghost with tcfa
1833: dup taddr>region 0<> IF
1834: 2dup (>regiontype) define-addr-struct addr-xt-ghost
1835:
1836: \ we define new address only if empty
1837: \ this is for not to take over the alias ghost
1838: \ (different ghost, but identical xt)
1839: \ but the very first that really defines it
1840: dup @ 0= IF ! ELSE 2drop THEN
1841: THEN
1842:
1843: \ is ghost resolved?, second resolve means another
1844: \ definition with the same name
1845: over undefined? 0= IF exists EXIT THEN
1846: \ get linked-list
1847: swap >r r@ >link @ swap \ ( list tcfa R: ghost )
1848: \ mark ghost as resolved
1849: dup r@ >link ! <res> r@ >magic !
1850: r@ to resolved
1851: r@ >comp @ ['] prim-forward = IF
1852: ['] prim-resolved r@ >comp ! THEN
1853: r@ >comp @ what's is-forward = IF
1854: ['] prim-resolved r@ >comp ! THEN
1855: \ loop through forward referencies
1856: r> -rot
1857: comp-state @ >r Resolving comp-state !
1858: resolve-loop
1859: r> comp-state !
1860:
1861: ['] noop IS resolve-warning
1862: ;
1863:
1864: \ gexecute ghost, 01nov92py
1865:
1866: : (gexecute) ( ghost -- )
1867: dup >comp @ EXECUTE ;
1868:
1869: : gexecute ( ghost -- )
1870: dup >magic @ <imm> = IF -1 ABORT" CROSS: gexecute on immediate word" THEN
1871: (gexecute) ;
1872:
1873: : addr, ( ghost -- )
1874: dup forward? IF 1 refered 0 T a, H ELSE >link @ T a, H THEN ;
1875:
1876: \ .unresolved 11may93jaw
1877:
1878: variable ResolveFlag
1879:
1880: \ ?touched 11may93jaw
1881:
1882: : ?touched ( ghost -- flag ) dup forward? swap >link @
1883: 0 <> and ;
1884:
1885: : .forwarddefs ( ghost -- )
1886: ." appeared in:"
1887: >link
1888: BEGIN @ dup
1889: WHILE cr 5 spaces
1890: dup >ghost @ .ghost
1891: ." file " dup >file @ ?dup IF count type ELSE ." CON" THEN
1892: ." line " dup >line @ .dec
1893: REPEAT
1894: drop ;
1895:
1896: : ?resolved ( ghost -- )
1897: dup ?touched
1898: IF ResolveFlag on
1899: dup cr .ghost .forwarddefs
1900: ELSE drop
1901: THEN ;
1902:
1903: : .unresolved ( -- )
1904: ResolveFlag off cr ." Unresolved: "
1905: ghost-list
1906: BEGIN @ dup
1907: WHILE dup ?resolved
1908: REPEAT drop ResolveFlag @
1909: IF
1910: -1 abort" Unresolved words!"
1911: ELSE
1912: ." Nothing!"
1913: THEN
1914: cr ;
1915:
1916: : .stats
1917: base @ >r decimal
1918: cr ." named Headers: " headers-named @ .
1919: r> base ! ;
1920:
1921: >MINIMAL
1922:
1923: : .unresolved .unresolved ;
1924:
1925: >CROSS
1926: \ Header states 12dec92py
1927:
1928: \ : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
1929: bigendian [IF] 0 [ELSE] tcell 1- [THEN] Constant flag+
1930: : flag! ( w -- ) tlast @ flag+ + dup >r T c@ xor r> c! H ;
1931:
1932: VARIABLE ^imm
1933:
1934: \ !! should be target wordsize specific
1935: $80 constant alias-mask
1936: $40 constant immediate-mask
1937: $20 constant restrict-mask
1938:
1939: >TARGET
1940: : immediate immediate-mask flag!
1941: ^imm @ @ dup <imm> = IF drop EXIT THEN
1942: <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
1943: <imm> ^imm @ ! ;
1944: : restrict restrict-mask flag! ;
1945:
1946: : isdoer
1947: \G define a forth word as doer, this makes obviously only sence on
1948: \G forth processors such as the PSC1000
1949: <do:> last-header-ghost @ >magic ! ;
1950: >CROSS
1951:
1952: \ Target Header Creation 01nov92py
1953:
1954: : ht-lstring, ( addr count -- )
1955: dup T , H bounds ?DO I c@ T c, H LOOP ;
1956:
1957: >TARGET
1958: : name, ( "name" -- ) bl word count ht-lstring, X cfalign ;
1959: : view, ( -- ) ( dummy ) ;
1960: >CROSS
1961:
1962: \ Target Document Creation (goes to crossdoc.fd) 05jul95py
1963:
1964: s" ./doc/crossdoc.fd" r/w create-file throw value doc-file-id
1965: \ contains the file-id of the documentation file
1966:
1967: : T-\G ( -- )
1968: source >in @ /string doc-file-id write-line throw
1969: postpone \ ;
1970:
1971: Variable to-doc to-doc on
1972:
1973: : cross-doc-entry ( -- )
1974: to-doc @ tlast @ 0<> and \ not an anonymous (i.e. noname) header
1975: IF
1976: s" " doc-file-id write-line throw
1977: s" make-doc " doc-file-id write-file throw
1978:
1979: Last-Header-Ghost @ >ghostname doc-file-id write-file throw
1980: >in @
1981: [char] ( parse 2drop
1982: [char] ) parse doc-file-id write-file throw
1983: s" )" doc-file-id write-file throw
1984: [char] \ parse 2drop
1985: T-\G
1986: >in !
1987: THEN ;
1988:
1989: \ Target TAGS creation
1990:
1991: s" kernel.TAGS" r/w create-file throw value tag-file-id
1992: s" kernel.tags" r/w create-file throw value vi-tag-file-id
1993: \ contains the file-id of the tags file
1994:
1995: Create tag-beg 2 c, 7F c, bl c,
1996: Create tag-end 2 c, bl c, 01 c,
1997: Create tag-bof 1 c, 0C c,
1998: Create tag-tab 1 c, 09 c,
1999:
2000: 2variable last-loadfilename 0 0 last-loadfilename 2!
2001:
2002: : put-load-file-name ( -- )
2003: sourcefilename last-loadfilename 2@ d<>
2004: IF
2005: tag-bof count tag-file-id write-line throw
2006: sourcefilename 2dup
2007: tag-file-id write-file throw
2008: last-loadfilename 2!
2009: s" ,0" tag-file-id write-line throw
2010: THEN ;
2011:
2012: : cross-gnu-tag-entry ( -- )
2013: tlast @ 0<> \ not an anonymous (i.e. noname) header
2014: IF
2015: put-load-file-name
2016: source >in @ min tag-file-id write-file throw
2017: tag-beg count tag-file-id write-file throw
2018: Last-Header-Ghost @ >ghostname tag-file-id write-file throw
2019: tag-end count tag-file-id write-file throw
2020: base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw
2021: \ >in @ 0 <# #s [char] , hold #> tag-file-id write-line throw
2022: s" ,0" tag-file-id write-line throw
2023: base !
2024: THEN ;
2025:
2026: : cross-vi-tag-entry ( -- )
2027: tlast @ 0<> \ not an anonymous (i.e. noname) header
2028: IF
2029: sourcefilename vi-tag-file-id write-file throw
2030: tag-tab count vi-tag-file-id write-file throw
2031: Last-Header-Ghost @ >ghostname vi-tag-file-id write-file throw
2032: tag-tab count vi-tag-file-id write-file throw
2033: s" /^" vi-tag-file-id write-file throw
2034: source vi-tag-file-id write-file throw
2035: s" $/" vi-tag-file-id write-line throw
2036: THEN ;
2037:
2038: : cross-tag-entry ( -- )
2039: cross-gnu-tag-entry
2040: cross-vi-tag-entry ;
2041:
2042: \ Check for words
2043:
2044: Defer skip? ' false IS skip?
2045:
2046: : skipdef ( "name" -- )
2047: \G skip definition of an undefined word in undef-words and
2048: \G all-words mode
2049: Ghost dup forward?
2050: IF >magic <skip> swap !
2051: ELSE drop THEN ;
2052:
2053: : tdefined? ( "name" -- flag )
2054: Ghost undefined? 0= ;
2055:
2056: : defined2? ( "name" -- flag )
2057: \G return true for anything else than forward, even for <skip>
2058: \G that's what we want
2059: Ghost forward? 0= ;
2060:
2061: : forced? ( "name" -- flag )
2062: \G return ture if it is a foreced skip with defskip
2063: Ghost >magic @ <skip> = ;
2064:
2065: : needed? ( -- flag ) \ name
2066: \G returns a false flag when
2067: \G a word is not defined
2068: \G a forward reference exists
2069: \G so the definition is not skipped!
2070: bl word gfind
2071: IF dup undefined?
2072: nip
2073: 0=
2074: ELSE drop true THEN ;
2075:
2076: : doer? ( -- flag ) \ name
2077: Ghost >magic @ <do:> = ;
2078:
2079: : skip-defs ( -- )
2080: BEGIN refill WHILE source -trailing nip 0= UNTIL THEN ;
2081:
2082: \ Target header creation
2083:
2084: Variable NoHeaderFlag
2085: NoHeaderFlag off
2086:
2087: : 0.r ( n1 n2 -- )
2088: base @ >r hex
2089: 0 swap <# 0 ?DO # LOOP #> type
2090: r> base ! ;
2091:
2092: : .sym ( adr len -- )
2093: \G escapes / and \ to produce sed output
2094: bounds
2095: DO I c@ dup
2096: CASE [char] / OF drop ." \/" ENDOF
2097: [char] \ OF drop ." \\" ENDOF
2098: dup OF emit ENDOF
2099: ENDCASE
2100: LOOP ;
2101:
2102: Defer setup-execution-semantics
2103: 0 Value lastghost
2104:
2105: : (THeader ( "name" -- ghost )
2106: \ >in @ bl word count type 2 spaces >in !
2107: \ wordheaders will always be compiled to rom
2108: switchrom
2109: \ build header in target
2110: NoHeaderFlag @
2111: IF NoHeaderFlag off
2112: ELSE
2113: T align H view,
2114: tlast @ dup 0> IF tcell - THEN T A, H there tlast !
2115: 1 headers-named +! \ Statistic
2116: >in @ T name, H >in !
2117: THEN
2118: T cfalign here H tlastcfa !
2119: \ Old Symbol table sed-script
2120: \ >in @ cr ." sym:s/CFA=" there 4 0.r ." /" bl word count .sym ." /g" cr >in !
2121: HeaderGhost
2122: \ output symbol table to extra file
2123: [ [IFDEF] fd-symbol-table ]
2124: base @ hex there s>d <# 8 0 DO # LOOP #> fd-symbol-table write-file throw base !
2125: s" :" fd-symbol-table write-file throw
2126: dup >ghostname fd-symbol-table write-line throw
2127: [ [THEN] ]
2128: dup Last-Header-Ghost ! dup to lastghost
2129: dup >magic ^imm ! \ a pointer for immediate
2130: alias-mask flag!
2131: cross-doc-entry cross-tag-entry
2132: setup-execution-semantics
2133: ;
2134:
2135: \ this is the resolver information from ":"
2136: \ resolving is done by ";"
2137: Variable ;Resolve 1 cells allot
2138:
2139: : hereresolve ( ghost -- )
2140: there resolve 0 ;Resolve ! ;
2141:
2142: : Theader ( "name" -- ghost )
2143: (THeader dup hereresolve ;
2144:
2145: Variable aprim-nr -20 aprim-nr !
2146:
2147: : copy-execution-semantics ( ghost-from ghost-dest -- )
2148: >r
2149: dup >exec @ r@ >exec !
2150: dup >comp @ r@ >comp !
2151: dup >exec2 @ r@ >exec2 !
2152: dup >exec-compile @ r@ >exec-compile !
2153: dup >ghost-xt @ r@ >ghost-xt !
2154: dup >created @ r@ >created !
2155: rdrop drop ;
2156:
2157: >TARGET
2158:
2159: : Alias ( cfa -- ) \ name
2160: >in @ skip? IF 2drop EXIT THEN >in !
2161: (THeader ( S xt ghost )
2162: 2dup swap xt>ghost swap copy-execution-semantics
2163: over resolve T A, H alias-mask flag! ;
2164:
2165: Variable last-prim-ghost
2166: 0 last-prim-ghost !
2167:
2168: : asmprimname, ( ghost -- : name )
2169: dup last-prim-ghost !
2170: >r
2171: here bl word count string, r@ >asm-name !
2172: aprim-nr @ r> >asm-dummyaddr ! ;
2173:
2174: Defer setup-prim-semantics
2175:
2176: : mapprim ( "forthname" "asmlabel" -- )
2177: THeader -1 aprim-nr +! aprim-nr @ T A, H
2178: asmprimname,
2179: setup-prim-semantics ;
2180:
2181: : mapprim: ( "forthname" "asmlabel" -- )
2182: -1 aprim-nr +! aprim-nr @
2183: Ghost tuck swap resolve <do:> swap tuck >magic !
2184: asmprimname, ;
2185:
2186: : Alias: ( cfa -- ) \ name
2187: >in @ skip? IF 2drop EXIT THEN >in !
2188: dup 0< s" prims" T $has? H 0= and
2189: IF
2190: .sourcepos ." needs doer: " >in @ bl word count type >in ! cr
2191: THEN
2192: Ghost tuck swap resolve <do:> swap >magic ! ;
2193:
2194: Variable prim#
2195: : first-primitive ( n -- ) prim# ! ;
2196: : Primitive ( -- ) \ name
2197: >in @ skip? IF drop EXIT THEN >in !
2198: s" prims" T $has? H 0=
2199: IF
2200: .sourcepos ." needs prim: " >in @ bl word count type >in ! cr
2201: THEN
2202: \ ['] prim-forward IS is-forward
2203: prim# @ (THeader ( S xt ghost )
2204: dup >ghost-flags <primitive> set-flag
2205: over resolve T A, H alias-mask flag!
2206: \ ['] call-forward IS is-forward
2207: -1 prim# +! ;
2208: >CROSS
2209:
2210: \ Conditionals and Comments 11may93jaw
2211:
2212: \G saves the existing cond action, this is used for redefining in
2213: \G instant
2214: Variable cond-xt-old
2215:
2216: : cond-target ( -- )
2217: \G Compiles semantic of redefined cond into new one
2218: cond-xt-old @ compile, ; immediate restrict
2219:
2220: : ;Cond
2221: postpone ;
2222: swap ! ; immediate
2223:
2224: : Cond: ( "name" -- )
2225: \g defines a conditional or another word that must
2226: \g be executed directly while compiling
2227: \g these words have no interpretative semantics by default
2228: Ghost
2229: >exec-compile
2230: dup @ cond-xt-old !
2231: :NONAME ;
2232:
2233:
2234: : Comment ( -- )
2235: >in @ Ghost swap >in ! ' swap
2236: 2dup >exec-compile ! >exec ! ;
2237:
2238: Comment ( Comment \
2239:
2240: \ compile 10may93jaw
2241:
2242: : compile ( "name" -- ) \ name
2243: findghost
2244: dup >exec-compile @ ?dup
2245: IF nip compile,
2246: ELSE postpone literal postpone gexecute THEN ; immediate restrict
2247:
2248: >TARGET
2249:
2250: : ' ( -- xt )
2251: \G returns the target-cfa of a ghost
2252: bl word gfind 0= ABORT" CROSS: Ghost don't exists"
2253: g>xt ;
2254:
2255: \ FIXME: this works for the current use cases, but is not
2256: \ in all cases correct ;-)
2257: : comp' X ' 0 ;
2258:
2259: Cond: ['] T ' H alit, ;Cond
2260:
2261: >CROSS
2262:
2263: : [T']
2264: \ returns the target-cfa of a ghost, or compiles it as literal
2265: postpone [G']
2266: state @ IF postpone g>xt ELSE g>xt THEN ; immediate
2267:
2268: \ \ threading modell 13dec92py
2269: \ modularized 14jun97jaw
2270:
2271: T 2 cells H Value xt>body
2272:
2273: : (>body) ( cfa -- pfa )
2274: xt>body + ; ' (>body) plugin-of t>body
2275:
2276: : fillcfa ( usedcells -- )
2277: T cells H xt>body swap -
2278: assert1( dup 0 >= )
2279: 0 ?DO 0 X c, tchar +LOOP ;
2280:
2281: : (doer,) ( ghost -- )
2282: addr, 1 fillcfa ; ' (doer,) plugin-of doer,
2283:
2284: : (docol,) ( -- ) [G'] :docol (doer,) ; ' (docol,) plugin-of docol,
2285:
2286: : (doprim,) ( -- )
2287: there xt>body + ca>native T a, H 1 fillcfa ; ' (doprim,) plugin-of doprim,
2288:
2289: : (doeshandler,) ( -- )
2290: T cfalign H compile :doesjump T 0 , H ; ' (doeshandler,) plugin-of doeshandler,
2291:
2292: : (dodoes,) ( does-action-ghost -- )
2293: ]comp [G'] :dodoes gexecute comp[
2294: addr,
2295: \ the relocator in the c engine, does not like the
2296: \ does-address to marked for relocation
2297: [ T e? ec H 0= [IF] ] T here H tcell - reloff [ [THEN] ]
2298: 2 fillcfa ; ' (dodoes,) plugin-of dodoes,
2299:
2300: : (dlit,) ( n -- ) compile lit td, ; ' (dlit,) plugin-of dlit,
2301:
2302: : (lit,) ( n -- ) s>d dlit, ; ' (lit,) plugin-of lit,
2303:
2304: \ if we dont produce relocatable code alit, defaults to lit, jaw
2305: \ this is just for convenience, so we don't have to define alit,
2306: \ seperately for embedded systems....
2307: T has? relocate H
2308: [IF]
2309: : (alit,) ( n -- ) compile lit T a, H ; ' (alit,) plugin-of alit,
2310: [ELSE]
2311: : (alit,) ( n -- ) lit, ; ' (alit,) plugin-of alit,
2312: [THEN]
2313:
2314: : (fini,) compile ;s ; ' (fini,) plugin-of fini,
2315:
2316: [IFUNDEF] (code)
2317: Defer (code)
2318: Defer (end-code)
2319: [THEN]
2320:
2321: >TARGET
2322: : Code
2323: defempty?
2324: (THeader there resolve
2325: [ T e? prims H 0= [IF] T e? ITC H [ELSE] true [THEN] ] [IF]
2326: doprim,
2327: [THEN]
2328: depth (code) ;
2329:
2330: : Code:
2331: defempty?
2332: Ghost dup there ca>native resolve <do:> swap >magic !
2333: depth (code) ;
2334:
2335: : end-code
2336: (end-code)
2337: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
2338: ELSE true ABORT" CROSS: Stack empty" THEN
2339: ;
2340:
2341: >CROSS
2342:
2343: \ tLiteral 12dec92py
2344:
2345: >TARGET
2346: Cond: \G T-\G ;Cond
2347:
2348: Cond: Literal ( n -- ) lit, ;Cond
2349: Cond: ALiteral ( n -- ) alit, ;Cond
2350:
2351: : Char ( "<char>" -- ) bl word char+ c@ ;
2352: Cond: [Char] ( "<char>" -- ) Char lit, ;Cond
2353:
2354: tchar 1 = [IF]
2355: Cond: chars ;Cond
2356: [THEN]
2357:
2358: \ some special literals 27jan97jaw
2359:
2360: \ !! Known Bug: Special Literals and plug-ins work only correct
2361: \ on 16 and 32 Bit Targets and 32 Bit Hosts!
2362:
2363: \ This section could be done with dlit, now. But first I need
2364: \ some test code JAW
2365:
2366: Cond: MAXU
2367: tcell 1 cells u>
2368: IF compile lit tcell 0 ?DO FF T c, H LOOP
2369: ELSE ffffffff lit, THEN
2370: ;Cond
2371:
2372: Cond: MINI
2373: tcell 1 cells u>
2374: IF compile lit bigendian
2375: IF 80 T c, H tcell 1 ?DO 0 T c, H LOOP
2376: ELSE tcell 1 ?DO 0 T c, H LOOP 80 T c, H
2377: THEN
2378: ELSE tcell 2 = IF 8000 ELSE 80000000 THEN lit, THEN
2379: ;Cond
2380:
2381: Cond: MAXI
2382: tcell 1 cells u>
2383: IF compile lit bigendian
2384: IF 7F T c, H tcell 1 ?DO FF T c, H LOOP
2385: ELSE tcell 1 ?DO FF T c, H LOOP 7F T c, H
2386: THEN
2387: ELSE tcell 2 = IF 7fff ELSE 7fffffff THEN lit, THEN
2388: ;Cond
2389:
2390: >CROSS
2391:
2392: \ Target compiling loop 12dec92py
2393: \ ">tib trick thrown out 10may93jaw
2394: \ number? defined at the top 11may93jaw
2395: \ replaced >in by save-input
2396:
2397: : discard 0 ?DO drop LOOP ;
2398:
2399: \ compiled word might leave items on stack!
2400: : tcom ( x1 .. xn n name -- )
2401: \ dup count type space
2402: gfind
2403: IF >r ( discard saved input state ) discard r>
2404: dup >exec-compile @ ?dup
2405: IF nip execute-exec-compile ELSE gexecute THEN
2406: EXIT
2407: THEN
2408: number? dup
2409: IF 0> IF swap lit, THEN lit, discard
2410: ELSE 2drop restore-input throw Ghost gexecute THEN ;
2411:
2412: \ : ; DOES> 13dec92py
2413: \ ] 9may93py/jaw
2414:
2415: >CROSS
2416:
2417: : compiling-state ( -- )
2418: \G set states to compililng
2419: Compiling comp-state !
2420: \ if we have a state in target, change it with the compile state
2421: [G'] state dup undefined? 0=
2422: IF >ghost-xt @ execute X on ELSE drop THEN ;
2423:
2424: : interpreting-state ( -- )
2425: \G set states to interpreting
2426: \ if target has a state variable, change it according to our state
2427: [G'] state dup undefined? 0=
2428: IF >ghost-xt @ execute X off ELSE drop THEN
2429: Interpreting comp-state ! ;
2430:
2431: >TARGET
2432:
2433: : ]
2434: compiling-state
2435: BEGIN
2436: BEGIN save-input bl word
2437: dup c@ 0= WHILE drop discard refill 0=
2438: ABORT" CROSS: End of file while target compiling"
2439: REPEAT
2440: tcom
2441: compiling? 0=
2442: UNTIL ;
2443:
2444: \ by the way: defining a second interpreter (a compiler-)loop
2445: \ is not allowed if a system should be ans conform
2446:
2447: : (:) ( ghost -- )
2448: \ common factor of : and :noname. Prepare ;Resolve and start definition
2449: ;Resolve ! there ;Resolve cell+ !
2450: docol, ]comp colon-start depth T ] H ;
2451:
2452: : : ( -- colon-sys ) \ Name
2453: defempty?
2454: constflag off \ don't let this flag work over colon defs
2455: \ just to go sure nothing unwanted happens
2456: >in @ skip? IF drop skip-defs EXIT THEN >in !
2457: (THeader (:) ;
2458:
2459: : :noname ( -- colon-sys )
2460: X cfalign there
2461: \ define a nameless ghost
2462: here ghostheader dup last-header-ghost ! dup to lastghost
2463: (:) ;
2464:
2465: Cond: EXIT ( -- ) compile ;S ;Cond
2466:
2467: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
2468:
2469: >CROSS
2470: : LastXT ;Resolve @ 0= abort" CROSS: no definition for LastXT"
2471: ;Resolve cell+ @ ;
2472:
2473: >TARGET
2474:
2475: Cond: recurse ( -- ) Last-Header-Ghost @ gexecute ;Cond
2476:
2477: Cond: ; ( -- )
2478: depth ?dup
2479: IF 1- <> ABORT" CROSS: Stack changed"
2480: ELSE true ABORT" CROSS: Stack empty"
2481: THEN
2482: colon-end
2483: fini,
2484: comp[
2485: ;Resolve @
2486: IF ['] colon-resolved ;Resolve @ >comp !
2487: ;Resolve @ ;Resolve cell+ @ resolve
2488: THEN
2489: interpreting-state
2490: ;Cond
2491:
2492: Cond: [ ( -- ) interpreting-state ;Cond
2493:
2494: >CROSS
2495:
2496: 0 Value created
2497:
2498: : !does ( does-action -- )
2499: tlastcfa @ [G'] :dovar killref
2500: >space here >r ghostheader space>
2501: r@ created >do:ghost ! r@ swap resolve
2502: r> tlastcfa @ >tempdp dodoes, tempdp> ;
2503:
2504: Defer instant-interpret-does>-hook
2505:
2506: : does-resolved ( ghost -- )
2507: compile does-exec g>xt T a, H ;
2508: \ dup g>body alit, >do:ghost @ g>xt 0 t>body - colon, ;
2509:
2510: : resolve-does>-part ( -- )
2511: \ resolve words made by builders
2512: Last-Header-Ghost @ >do:ghost @ ?dup
2513: IF there resolve THEN ;
2514:
2515: >TARGET
2516: Cond: DOES>
2517: compile (does>) doeshandler,
2518: resolve-does>-part
2519: ;Cond
2520:
2521: : DOES>
2522: ['] does-resolved created >comp !
2523: switchrom doeshandler, T here H !does
2524: instant-interpret-does>-hook
2525: depth T ] H ;
2526:
2527: >CROSS
2528: \ Creation 01nov92py
2529:
2530: \ Builder 11may93jaw
2531:
2532: 0 Value built
2533:
2534: : Builder ( Create-xt do-ghost "name" -- )
2535: \ builds up a builder in current vocabulary
2536: \ create-xt is executed when word is interpreted
2537: \ do:-xt is executed when the created word from builder is executed
2538: \ for do:-xt an additional entry after the normal ghost-entrys is used
2539:
2540: ghost to built
2541: built >created @ 0= IF
2542: built >created on
2543: THEN ;
2544:
2545: : gdoes, ( ghost -- )
2546: \ makes the codefield for a word that is built
2547: >do:ghost @ dup undefined? 0=
2548: IF
2549: dup >magic @ <do:> =
2550: IF doer,
2551: ELSE dodoes,
2552: THEN
2553: EXIT
2554: THEN
2555: \ compile :dodoes gexecute
2556: \ T here H tcell - reloff
2557: 2 refered
2558: 0 fillcfa
2559: ;
2560:
2561: : takeover-x-semantics ( S constructor-ghost new-ghost -- )
2562: \g stores execution semantic and compilation semantic in the built word
2563: swap >do:ghost @ 2dup swap >do:ghost !
2564: \ we use the >exec2 field for the semantic of a created word,
2565: \ using exec or exec2 makes no difference for normal cross-compilation
2566: \ but is usefull for instant where the exec field is already
2567: \ defined (e.g. Vocabularies)
2568: 2dup >exec @ swap >exec2 !
2569: >comp @ swap >comp ! ;
2570:
2571: 0 Value createhere
2572:
2573: : create-resolve ( -- )
2574: created createhere resolve 0 ;Resolve ! ;
2575: : create-resolve-immediate ( -- )
2576: create-resolve T immediate H ;
2577:
2578: : TCreate ( <name> -- )
2579: create-forward-warn
2580: IF ['] reswarn-forward IS resolve-warning THEN
2581: executed-ghost @ (Theader
2582: dup >created on dup to created
2583: 2dup takeover-x-semantics
2584: there to createhere drop gdoes, ;
2585:
2586: : RTCreate ( <name> -- )
2587: \ creates a new word with code-field in ram
2588: create-forward-warn
2589: IF ['] reswarn-forward IS resolve-warning THEN
2590: \ make Alias
2591: executed-ghost @ (THeader
2592: dup >created on dup to created
2593: 2dup takeover-x-semantics
2594: there 0 T a, H alias-mask flag!
2595: \ store poiter to code-field
2596: switchram T cfalign H
2597: there swap T ! H
2598: there tlastcfa !
2599: there to createhere drop gdoes, ;
2600:
2601: : Build: ( -- [xt] [colon-sys] )
2602: :noname postpone TCreate ;
2603:
2604: : BuildSmart: ( -- [xt] [colon-sys] )
2605: :noname
2606: [ T has? rom H [IF] ]
2607: postpone RTCreate
2608: [ [ELSE] ]
2609: postpone TCreate
2610: [ [THEN] ] ;
2611:
2612: : ;Build
2613: postpone create-resolve postpone ; built >exec ! ; immediate
2614:
2615: : ;Build-immediate
2616: postpone create-resolve-immediate
2617: postpone ; built >exec ! ; immediate
2618:
2619: : gdoes> ( ghost -- addr flag )
2620: executed-ghost @ g>body ;
2621:
2622: \ DO: ;DO 11may93jaw
2623:
2624: : do:ghost! ( ghost -- ) built >do:ghost ! ;
2625: : doexec! ( xt -- ) built >do:ghost @ >exec ! ;
2626:
2627: : DO: ( -- [xt] [colon-sys] )
2628: here ghostheader do:ghost!
2629: :noname postpone gdoes> ;
2630:
2631: : by: ( -- [xt] [colon-sys] ) \ name
2632: Ghost do:ghost!
2633: :noname postpone gdoes> ;
2634:
2635: : ;DO ( [xt] [colon-sys] -- )
2636: postpone ; doexec! ; immediate
2637:
2638: : by ( -- ) \ Name
2639: Ghost >do:ghost @ do:ghost! ;
2640:
2641: : compile: ( --[xt] [colon-sys] )
2642: \G defines a compile time action for created words
2643: \G by this builder
2644: :noname ;
2645:
2646: : ;compile ( [xt] [colon-sys] -- )
2647: postpone ; built >do:ghost @ >comp ! ; immediate
2648:
2649: \ Variables and Constants 05dec92py
2650:
2651: Builder (Constant)
2652: Build: ( n -- ) ;Build
2653: by: :docon ( target-body-addr -- n ) T @ H ;DO
2654:
2655: Builder Constant
2656: Build: ( n -- ) T , H ;Build
2657: by (Constant)
2658:
2659: Builder AConstant
2660: Build: ( n -- ) T A, H ;Build
2661: by (Constant)
2662:
2663: Builder 2Constant
2664: Build: ( d -- ) T , , H ;Build
2665: DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO
2666:
2667: Builder Create
2668: BuildSmart: ;Build
2669: by: :dovar ( target-body-addr -- addr ) ;DO
2670:
2671: Builder Variable
2672: T has? rom H [IF]
2673: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 , H ( switchrom ) ;Build
2674: by (Constant)
2675: [ELSE]
2676: Build: T 0 , H ;Build
2677: by Create
2678: [THEN]
2679:
2680: Builder 2Variable
2681: T has? rom H [IF]
2682: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 , 0 , H ( switchrom ) ;Build
2683: by (Constant)
2684: [ELSE]
2685: Build: T 0 , 0 , H ;Build
2686: by Create
2687: [THEN]
2688:
2689: Builder AVariable
2690: T has? rom H [IF]
2691: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 A, H ( switchrom ) ;Build
2692: by (Constant)
2693: [ELSE]
2694: Build: T 0 A, H ;Build
2695: by Create
2696: [THEN]
2697:
2698: \ User variables 04may94py
2699:
2700: Variable tup 0 tup !
2701: Variable tudp 0 tudp !
2702:
2703: : u, ( n -- udp )
2704: tup @ tudp @ + T ! H
2705: tudp @ dup T cell+ H tudp ! ;
2706:
2707: : au, ( n -- udp )
2708: tup @ tudp @ + T A! H
2709: tudp @ dup T cell+ H tudp ! ;
2710:
2711: Builder User
2712: Build: 0 u, X , ;Build
2713: by: :douser ( ghost -- up-addr ) X @ tup @ + ;DO
2714:
2715: Builder 2User
2716: Build: 0 u, X , 0 u, drop ;Build
2717: by User
2718:
2719: Builder AUser
2720: Build: 0 au, X , ;Build
2721: by User
2722:
2723: Builder (Value)
2724: Build: ( n -- ) ;Build
2725: by: :docon ( target-body-addr -- n ) T @ H ;DO
2726:
2727: Builder Value
2728: BuildSmart: T , H ;Build
2729: by (Value)
2730:
2731: Builder AValue
2732: BuildSmart: T A, H ;Build
2733: by (Value)
2734:
2735: Defer texecute
2736:
2737: Builder Defer
2738: BuildSmart: ( -- ) [T'] noop T A, H ;Build
2739: by: :dodefer ( ghost -- ) X @ texecute ;DO
2740:
2741: Builder interpret/compile:
2742: Build: ( inter comp -- ) swap T A, A, H ;Build-immediate
2743: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
2744:
2745: \ Sturctures 23feb95py
2746:
2747: : nalign ( addr1 n -- addr2 )
2748: \ addr2 is the aligned version of addr1 wrt the alignment size n
2749: 1- tuck + swap invert and ;
2750:
2751:
2752: Builder (Field)
2753: Build: ;Build
2754: by: :dofield T @ H + ;DO
2755:
2756: Builder Field
2757: Build: ( align1 offset1 align size "name" -- align2 offset2 )
2758: rot dup T , H ( align1 align size offset1 )
2759: + >r nalign r> ;Build
2760: by (Field)
2761:
2762: >TARGET
2763: : struct T 1 chars 0 H ;
2764: : end-struct T 2Constant H ;
2765:
2766: : cell% ( n -- size align )
2767: T 1 cells H dup ;
2768: >CROSS
2769:
2770: \ Input-Methods 01py
2771:
2772: Builder input-method
2773: Build: ( m v -- m' v ) dup T , cell+ H ;Build
2774: DO: abort" Not in cross mode" ;DO
2775:
2776: Builder input-var
2777: Build: ( m v size -- m v' ) over T , H + ;Build
2778: DO: abort" Not in cross mode" ;DO
2779:
2780: \ Peephole optimization 05sep01jaw
2781:
2782: \ this section defines different compilation
2783: \ actions for created words
2784: \ this will help the peephole optimizer
2785: \ I (jaw) took this from bernds lates cross-compiler
2786: \ changes but seperated it from the original
2787: \ Builder words. The final plan is to put this
2788: \ into a seperate file, together with the peephole
2789: \ optimizer for cross
2790:
2791:
2792: T has? peephole H [IF]
2793:
2794: >CROSS
2795:
2796: : (callc) compile call T >body a, H ; ' (callc) plugin-of colon,
2797: : (call-res) >tempdp resolved gexecute tempdp> drop ;
2798: ' (call-res) plugin-of colon-resolve
2799: : (prim) dup 0< IF ( $4000 - ) ELSE
2800: ." wrong usage of (prim) "
2801: dup gdiscover IF .ghost ELSE . THEN cr -2 throw THEN
2802: T a, H ; ' (prim) plugin-of prim,
2803:
2804: \ if we want this, we have to spilt aconstant
2805: \ and constant!!
2806: \ Builder (Constant)
2807: \ compile: g>body X @ lit, ;compile
2808:
2809: Builder (Constant)
2810: compile: g>body compile lit@ T a, H ;compile
2811:
2812: Builder (Value)
2813: compile: g>body compile lit@ T a, H ;compile
2814:
2815: \ this changes also Variable, AVariable and 2Variable
2816: Builder Create
2817: compile: g>body alit, ;compile
2818:
2819: Builder User
2820: compile: g>body compile useraddr T @ , H ;compile
2821:
2822: Builder Defer
2823: compile: g>body compile lit-perform T A, H ;compile
2824:
2825: Builder (Field)
2826: compile: g>body T @ H compile lit+ T , H ;compile
2827:
2828: Builder interpret/compile:
2829: compile: does-resolved ;compile
2830:
2831: Builder input-method
2832: compile: does-resolved ;compile
2833:
2834: Builder input-var
2835: compile: does-resolved ;compile
2836:
2837: [THEN]
2838:
2839: \ structural conditionals 17dec92py
2840:
2841: >CROSS
2842: : (ncontrols?) ( n -- )
2843: \g We expect n open control structures
2844: depth over u<=
2845: ABORT" CROSS: unstructured, stack underflow"
2846: 0 ?DO I pick 0=
2847: ABORT" CROSS: unstructured"
2848: LOOP ; ' (ncontrols?) plugin-of ncontrols?
2849:
2850: \ : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
2851: \ : sys? ( sys -- sys ) dup 0= ?struc ;
2852:
2853: : >mark ( -- sys ) T here ( dup ." M" hex. ) 0 , H ;
2854:
2855: : branchoffset ( src dest -- ) - tchar / ; \ ?? jaw
2856:
2857: : >resolve ( sys -- )
2858: X here ( dup ." >" hex. ) over branchoffset swap X ! ;
2859:
2860: : <resolve ( sys -- )
2861: X here ( dup ." <" hex. ) branchoffset X , ;
2862:
2863: :noname compile branch X here branchoffset X , ;
2864: IS branch, ( target-addr -- )
2865: :noname compile ?branch X here branchoffset X , ;
2866: IS ?branch, ( target-addr -- )
2867: :noname compile branch T here 0 , H ;
2868: IS branchmark, ( -- branchtoken )
2869: :noname compile ?branch T here 0 , H ;
2870: IS ?branchmark, ( -- branchtoken )
2871: :noname T here 0 , H ;
2872: IS ?domark, ( -- branchtoken )
2873: :noname dup X @ ?struc X here over branchoffset swap X ! ;
2874: IS branchtoresolve, ( branchtoken -- )
2875: :noname branchto, X here ;
2876: IS branchtomark, ( -- target-addr )
2877:
2878: >TARGET
2879:
2880: \ Structural Conditionals 12dec92py
2881:
2882: \ CLEANUP Cond: BUT sys? swap ;Cond
2883: \ CLEANUP Cond: YET sys? dup ;Cond
2884:
2885: >CROSS
2886:
2887: Variable tleavings 0 tleavings !
2888:
2889: : (done) ( addr -- )
2890: tleavings @
2891: BEGIN dup
2892: WHILE
2893: >r dup r@ cell+ @ \ address of branch
2894: u> 0= \ lower than DO?
2895: WHILE
2896: r@ 2 cells + @ \ branch token
2897: branchtoresolve,
2898: r@ @ r> free throw
2899: REPEAT r> THEN
2900: tleavings ! drop ;
2901:
2902: >TARGET
2903:
2904: \ What for? ANS? JAW Cond: DONE ( addr -- ) (done) ;Cond
2905:
2906: >CROSS
2907: : (leave) ( branchtoken -- )
2908: 3 cells allocate throw >r
2909: T here H r@ cell+ !
2910: r@ 2 cells + !
2911: tleavings @ r@ !
2912: r> tleavings ! ;
2913: >TARGET
2914:
2915: : (leave,) ( -- )
2916: branchmark, (leave) ; ' (leave,) plugin-of leave,
2917:
2918: : (?leave,) ( -- )
2919: compile 0= ?branchmark, (leave) ; ' (?leave,) plugin-of ?leave,
2920:
2921: Cond: LEAVE leave, ;Cond
2922: Cond: ?LEAVE ?leave, ;Cond
2923:
2924: >CROSS
2925: \ !!JW ToDo : Move to general tools section
2926:
2927: : to1 ( x1 x2 xn n -- addr )
2928: \G packs n stack elements in am allocated memory region
2929: dup dup 1+ cells allocate throw dup >r swap 1+
2930: 0 DO tuck ! cell+ LOOP
2931: drop r> ;
2932:
2933: : 1to ( addr -- x1 x2 xn )
2934: \G unpacks the elements saved by to1
2935: dup @ swap over cells + swap
2936: 0 DO dup @ swap 1 cells - LOOP
2937: free throw ;
2938:
2939: : loop] branchto, dup <resolve tcell - (done) ;
2940:
2941: : skiploop] ?dup IF branchto, branchtoresolve, THEN ;
2942:
2943: >TARGET
2944:
2945: \ Structural Conditionals 12dec92py
2946:
2947: : (cs-swap) ( x1 x2 -- x2 x1 )
2948: swap ; ' (cs-swap) plugin-of cs-swap
2949:
2950: : (ahead,) branchmark, ; ' (ahead,) plugin-of ahead,
2951:
2952: : (if,) ?branchmark, ; ' (if,) plugin-of if,
2953:
2954: : (then,) branchto, branchtoresolve, ; ' (then,) plugin-of then,
2955:
2956: : (else,) ( ahead ) branchmark,
2957: swap
2958: ( then ) branchto, branchtoresolve, ; ' (else,) plugin-of else,
2959:
2960: : (begin,) branchtomark, ; ' (begin,) plugin-of begin,
2961:
2962: : (while,) ( if ) ?branchmark,
2963: swap ; ' (while,) plugin-of while,
2964:
2965: : (again,) branch, ; ' (again,) plugin-of again,
2966:
2967: : (until,) ?branch, ; ' (until,) plugin-of until,
2968:
2969: : (repeat,) ( again ) branch,
2970: ( then ) branchto, branchtoresolve, ; ' (repeat,) plugin-of repeat,
2971:
2972: : (case,) ( -- n )
2973: 0 ; ' (case,) plugin-of case,
2974:
2975: : (of,) ( n -- x1 n )
2976: 1+ >r
2977: compile over compile =
2978: if, compile drop r> ; ' (of,) plugin-of of,
2979:
2980: : (endof,) ( x1 n -- x2 n )
2981: >r 1 ncontrols? else, r> ; ' (endof,) plugin-of endof,
2982:
2983: : (endcase,) ( x1 .. xn n -- )
2984: compile drop 0 ?DO 1 ncontrols? then, LOOP ; ' (endcase,) plugin-of endcase,
2985:
2986: >TARGET
2987: Cond: AHEAD ahead, ;Cond
2988: Cond: IF if, ;Cond
2989: Cond: THEN 1 ncontrols? then, ;Cond
2990: Cond: ENDIF 1 ncontrols? then, ;Cond
2991: Cond: ELSE 1 ncontrols? else, ;Cond
2992:
2993: Cond: BEGIN begin, ;Cond
2994: Cond: WHILE 1 ncontrols? while, ;Cond
2995: Cond: AGAIN 1 ncontrols? again, ;Cond
2996: Cond: UNTIL 1 ncontrols? until, ;Cond
2997: Cond: REPEAT 2 ncontrols? repeat, ;Cond
2998:
2999: Cond: CASE case, ;Cond
3000: Cond: OF of, ;Cond
3001: Cond: ENDOF endof, ;Cond
3002: Cond: ENDCASE endcase, ;Cond
3003:
3004: \ Structural Conditionals 12dec92py
3005:
3006: : (do,) ( -- target-addr )
3007: \ ?? i think 0 is too much! jaw
3008: 0 compile (do)
3009: branchtomark, 2 to1 ; ' (do,) plugin-of do,
3010:
3011: \ alternative for if no ?do
3012: \ : (do,)
3013: \ compile 2dup compile = compile IF
3014: \ compile 2drop compile ELSE
3015: \ compile (do) branchtomark, 2 to1 ;
3016:
3017: : (?do,) ( -- target-addr )
3018: 0 compile (?do) ?domark, (leave)
3019: branchtomark, 2 to1 ; ' (?do,) plugin-of ?do,
3020:
3021: : (for,) ( -- target-addr )
3022: compile (for) branchtomark, ; ' (for,) plugin-of for,
3023:
3024: : (loop,) ( target-addr -- )
3025: 1to compile (loop) loop]
3026: compile unloop skiploop] ; ' (loop,) plugin-of loop,
3027:
3028: : (+loop,) ( target-addr -- )
3029: 1to compile (+loop) loop]
3030: compile unloop skiploop] ; ' (+loop,) plugin-of +loop,
3031:
3032: : (next,)
3033: compile (next) loop] compile unloop ; ' (next,) plugin-of next,
3034:
3035: Cond: DO do, ;Cond
3036: Cond: ?DO ?do, ;Cond
3037: Cond: FOR for, ;Cond
3038:
3039: Cond: LOOP 1 ncontrols? loop, ;Cond
3040: Cond: +LOOP 1 ncontrols? +loop, ;Cond
3041: Cond: NEXT 1 ncontrols? next, ;Cond
3042:
3043: \ String words 23feb93py
3044:
3045: : ," [char] " parse ht-string, X align ;
3046:
3047: Cond: ." compile (.") T ," H ;Cond
3048: Cond: S" compile (S") T ," H ;Cond
3049: Cond: C" compile (C") T ," H ;Cond
3050: Cond: ABORT" compile (ABORT") T ," H ;Cond
3051:
3052: Cond: IS T ' >body H compile ALiteral compile ! ;Cond
3053: : IS T >address ' >body ! H ;
3054: Cond: TO T ' >body H compile ALiteral compile ! ;Cond
3055: : TO T ' >body ! H ;
3056:
3057: Cond: defers T ' >body @ compile, H ;Cond
3058:
3059: \ LINKED ERR" ENV" 2ENV" 18may93jaw
3060:
3061: \ linked list primitive
3062: : linked X here over X @ X A, swap X ! ;
3063: : chained T linked A, H ;
3064:
3065: : err" s" ErrLink linked" evaluate T , H
3066: [char] " parse ht-string, X align ;
3067:
3068: : env" [char] " parse s" EnvLink linked" evaluate
3069: ht-string, X align X , ;
3070:
3071: : 2env" [char] " parse s" EnvLink linked" evaluate
3072: here >r ht-string, X align X , X ,
3073: r> dup T c@ H 80 and swap T c! H ;
3074:
3075: \ compile must be last 22feb93py
3076:
3077: Cond: [compile] ( -- ) \ name
3078: \g For immediate words, works even if forward reference
3079: bl word gfind 0= ABORT" CROSS: Can't compile"
3080: (gexecute) ;Cond
3081:
3082: Cond: postpone ( -- ) \ name
3083: bl word gfind 0= ABORT" CROSS: Can't compile"
3084: dup >magic @ <fwd> =
3085: ABORT" CROSS: Can't postpone on forward declaration"
3086: dup >magic @ <imm> =
3087: IF (gexecute)
3088: ELSE compile (compile) addr, THEN ;Cond
3089:
3090: \ save-cross 17mar93py
3091:
3092: hex
3093:
3094: >CROSS
3095: Create magic s" Gforth2x" here over allot swap move
3096:
3097: bigendian 1+ \ strangely, in magic big=0, little=1
3098: tcell 1 = 0 and or
3099: tcell 2 = 2 and or
3100: tcell 4 = 4 and or
3101: tcell 8 = 6 and or
3102: tchar 1 = 00 and or
3103: tchar 2 = 28 and or
3104: tchar 4 = 50 and or
3105: tchar 8 = 78 and or
3106: magic 7 + c!
3107:
3108: : save-cross ( "image-name" "binary-name" -- )
3109: bl parse ." Saving to " 2dup type cr
3110: w/o bin create-file throw >r
3111: s" header" X $has? IF
3112: s" #! " r@ write-file throw
3113: bl parse r@ write-file throw
3114: s" --image-file" r@ write-file throw
3115: #lf r@ emit-file throw
3116: r@ dup file-position throw drop 8 mod 8 swap ( file-id limit index )
3117: ?do
3118: bl over emit-file throw
3119: loop
3120: drop
3121: magic 8 r@ write-file throw \ write magic
3122: ELSE
3123: bl parse 2drop
3124: THEN
3125: image @ there
3126: r@ write-file throw \ write image
3127: s" relocate" X $has? IF
3128: bit$ @ there 1- tcell>bit rshift 1+
3129: r@ write-file throw \ write tags
3130: THEN
3131: r> close-file throw ;
3132:
3133: : save-region ( addr len -- )
3134: bl parse w/o bin create-file throw >r
3135: swap >image swap r@ write-file throw
3136: r> close-file throw ;
3137:
3138: \ save-asm-region 29aug01jaw
3139:
3140: Variable name-ptr
3141: Create name-buf 200 chars allot
3142: : init-name-buf name-buf name-ptr ! ;
3143: : nb, name-ptr @ c! 1 chars name-ptr +! ;
3144: : $nb, ( adr len -- ) bounds ?DO I c@ nb, LOOP ;
3145: : @nb name-ptr @ name-buf tuck - ;
3146:
3147: \ stores a usefull string representation of the character
3148: \ in the name buffer
3149: : name-char, ( c -- )
3150: dup 'a 'z 1+ within IF nb, EXIT THEN
3151: dup 'A 'Z 1+ within IF $20 + nb, EXIT THEN
3152: dup '0 '9 1+ within IF nb, EXIT THEN
3153: CASE '+ OF s" _PLUS" $nb, ENDOF
3154: '- OF s" _MINUS" $nb, ENDOF
3155: '* OF s" _STAR" $nb, ENDOF
3156: '/ OF s" _SLASH" $nb, ENDOF
3157: '' OF s" _TICK" $nb, ENDOF
3158: '( OF s" _OPAREN" $nb, ENDOF
3159: ') OF s" _CPAREN" $nb, ENDOF
3160: '[ OF s" _OBRACKET" $nb, ENDOF
3161: '] OF s" _CBRACKET" $nb, ENDOF
3162: '! OF s" _STORE" $nb, ENDOF
3163: '@ OF s" _FETCH" $nb, ENDOF
3164: '> OF s" _GREATER" $nb, ENDOF
3165: '< OF s" _LESS" $nb, ENDOF
3166: '= OF s" _EQUAL" $nb, ENDOF
3167: '# OF s" _HASH" $nb, ENDOF
3168: '? OF s" _QUEST" $nb, ENDOF
3169: ': OF s" _COL" $nb, ENDOF
3170: '; OF s" _SEMICOL" $nb, ENDOF
3171: ', OF s" _COMMA" $nb, ENDOF
3172: '. OF s" _DOT" $nb, ENDOF
3173: '" OF s" _DQUOT" $nb, ENDOF
3174: dup
3175: base @ >r hex s>d <# #s 'X hold '_ hold #> $nb, r> base !
3176: ENDCASE ;
3177:
3178: : label-from-ghostname ( ghost -- addr len )
3179: dup >ghostname init-name-buf 'L nb, bounds
3180: ?DO I c@ name-char, LOOP
3181: \ we add the address to a name to make in unique
3182: \ because one name may appear more then once
3183: \ there are names (e.g. boot) that may be reference from other
3184: \ assembler source files, so we declare them as unique
3185: \ and don't add the address suffix
3186: dup >ghost-flags @ <unique> and 0=
3187: IF s" __" $nb, >link @ base @ >r hex 0 <# #s 'L hold #> r> base ! $nb,
3188: ELSE drop
3189: THEN
3190: @nb ;
3191:
3192: \ FIXME why disabled?!
3193: : label-from-ghostnameXX ( ghost -- addr len )
3194: \ same as (label-from-ghostname) but caches generated names
3195: dup >asm-name @ ?dup IF nip count EXIT THEN
3196: \ dup >r (label-from-ghostname) 2dup
3197: align here >r string, align
3198: r> r> >asm-name ! ;
3199:
3200: : primghostdiscover ( xt -- ghost true | xt false )
3201: dup 0= IF false EXIT THEN
3202: >r last-prim-ghost
3203: BEGIN @ dup
3204: WHILE dup >asm-dummyaddr @ r@ =
3205: IF rdrop true EXIT THEN
3206: REPEAT
3207: drop r> false ;
3208:
3209: : gdiscover2 ( xt -- ghost true | xt false )
3210: dup taddr>region 0= IF false EXIT THEN
3211: dup (>regiontype) @ dup 0= IF drop false EXIT THEN
3212: addr-xt-ghost @ dup 0= IF drop false EXIT THEN
3213: nip true ;
3214: \ dup >ghost-name @ IF nip true ELSE drop false THEN ;
3215:
3216: \ generates a label name for the target address
3217: : generate-label-name ( taddr -- addr len )
3218: gdiscover2
3219: IF dup >magic @ <do:> =
3220: IF >asm-name @ count EXIT THEN
3221: label-from-ghostname
3222: ELSE
3223: primghostdiscover
3224: IF >asm-name @ count
3225: ELSE base @ >r hex 0 <# #s 'L hold #> r> base !
3226: THEN
3227: THEN ;
3228:
3229: Variable outfile-fd
3230:
3231: : $out ( adr len -- ) outfile-fd @ write-file throw ;
3232: : nlout newline $out ;
3233: : .ux ( n -- )
3234: base @ hex swap 0 <# #S #> $out base ! ;
3235:
3236: : save-asm-region-part-aligned ( taddr len -- 'taddr 'len )
3237: dup cell/ 0
3238: ?DO nlout s" .word " $out over @relbit
3239: IF over X @ generate-label-name $out
3240: ELSE over X @ s" 0x0" $out .ux
3241: THEN
3242: tcell /string
3243: LOOP ;
3244:
3245: : print-bytes ( taddr len n -- taddr' len' )
3246: over min dup 0>
3247: IF nlout s" .byte " $out 0
3248: ?DO I 0> IF s" , " $out THEN
3249: over X c@ s" 0x0" $out .ux 1 /string
3250: LOOP
3251: THEN ;
3252:
3253: : save-asm-region-part ( addr len -- )
3254: over dup X aligned swap - ?dup
3255: IF print-bytes THEN
3256: save-asm-region-part-aligned
3257: dup dup X aligned swap - ?dup
3258: IF 2 pick @relbit ABORT" relocated field splitted"
3259: print-bytes
3260: THEN
3261: 2drop ;
3262:
3263: : print-label ( taddr -- )
3264: nlout generate-label-name $out s" :" $out ;
3265:
3266: : snl-calc ( taddr taddr2 -- )
3267: tuck over - ;
3268:
3269: : skip-nolables ( taddr -- taddr2 taddr len )
3270: \G skips memory region where no lables are defined
3271: \G starting from taddr+1
3272: \G Labels will be introduced for each reference mark
3273: \G in addr-refs.
3274: \G This word deals with lables at byte addresses as well.
3275: \G The main idea is to have an intro part which
3276: \G skips until the next cell boundary, the middle part
3277: \G which skips whole cells very efficiently and the third
3278: \G part which skips the bytes to the label in a cell
3279: dup 1+ dup (>regiontype)
3280: ( S taddr taddr-realstart type-addr )
3281: dup @ dup IF addr-refs @ THEN
3282: swap >r
3283: over align+ tuck tcell swap - rshift swap 0
3284: DO dup 1 and
3285: IF drop rdrop snl-calc UNLOOP EXIT THEN
3286: 2/ swap 1+ swap
3287: LOOP
3288: drop r> cell+
3289: ( S .. taddr2 type-addr ) dup
3290: BEGIN dup @ dup IF addr-refs @ THEN 0= WHILE cell+ REPEAT
3291: dup >r swap - 1 cells / tcell * + r>
3292: ( S .. taddr2+skiplencells type-addr )
3293: @ addr-refs @ 1 tcell lshift or
3294: BEGIN dup 1 and 0= WHILE swap 1+ swap 2/ REPEAT drop
3295: ( S .. taddr2+skiplencells+skiplenbytes )
3296: snl-calc ;
3297:
3298: : insert-label ( taddr -- )
3299: dup 0= IF drop EXIT THEN
3300: \ ignore everything which points outside our memory regions
3301: \ maybe a primitive pointer or whatever
3302: dup taddr>region 0= IF drop EXIT THEN
3303: dup >r (>regiontype) define-addr-struct addr-refs dup @
3304: r> tcell 1- and 1 swap lshift or swap ! ;
3305:
3306: \ this generates a sorted list of addresses which must be labels
3307: \ it scans therefore a whole region
3308: : generate-label-list-region ( taddr len -- )
3309: BEGIN over @relbit IF over X @ insert-label THEN
3310: tcell /string dup 0<
3311: UNTIL 2drop ;
3312:
3313: : generate-label-list ( -- )
3314: region-link
3315: BEGIN @ dup WHILE
3316: dup 0 >rlink - extent
3317: ?dup IF generate-label-list-region ELSE drop THEN
3318: REPEAT drop ;
3319:
3320: : create-outfile ( addr len -- )
3321: w/o bin create-file throw outfile-fd ! ;
3322:
3323: : close-outfile ( -- )
3324: outfile-fd @ close-file throw ;
3325:
3326: : (save-asm-region) ( region -- )
3327: \ ." label list..."
3328: generate-label-list
3329: \ ." ok!" cr
3330: extent ( S taddr len )
3331: over insert-label
3332: 2dup + dup insert-label >r ( R end-label )
3333: ( S taddr len ) drop
3334: BEGIN
3335: dup print-label
3336: dup r@ <> WHILE
3337: skip-nolables save-asm-region-part
3338: REPEAT drop rdrop ;
3339:
3340: : lineout ( addr len -- )
3341: outfile-fd @ write-line throw ;
3342:
3343: : save-asm-region ( region adr len -- )
3344: create-outfile (save-asm-region) close-outfile ;
3345:
3346: \ \ minimal definitions
3347:
3348: >MINIMAL also minimal
3349:
3350: \ Usefull words 13feb93py
3351:
3352: : KB 400 * ;
3353:
3354: \ \ [IF] [ELSE] [THEN] ... 14sep97jaw
3355:
3356: \ it is useful to define our own structures and not to rely
3357: \ on the words in the host system
3358: \ The words in the host system might be defined with vocabularies
3359: \ this doesn't work with our self-made compile-loop
3360:
3361: Create parsed 20 chars allot \ store word we parsed
3362:
3363: : upcase
3364: parsed count bounds
3365: ?DO I c@ toupper I c! LOOP ;
3366:
3367: : [ELSE]
3368: 1 BEGIN
3369: BEGIN bl word count dup WHILE
3370: comment? 20 umin parsed place upcase parsed count
3371: 2dup s" [IF]" compare 0= >r
3372: 2dup s" [IFUNDEF]" compare 0= >r
3373: 2dup s" [IFDEF]" compare 0= r> or r> or
3374: IF 2drop 1+
3375: ELSE 2dup s" [ELSE]" compare 0=
3376: IF 2drop 1- dup
3377: IF 1+
3378: THEN
3379: ELSE
3380: 2dup s" [ENDIF]" compare 0= >r
3381: s" [THEN]" compare 0= r> or
3382: IF 1- THEN
3383: THEN
3384: THEN
3385: ?dup 0= ?EXIT
3386: REPEAT
3387: 2drop refill 0=
3388: UNTIL drop ; immediate
3389:
3390: : [THEN] ( -- ) ; immediate
3391:
3392: : [ENDIF] ( -- ) ; immediate
3393:
3394: : [IF] ( flag -- )
3395: 0= IF postpone [ELSE] THEN ; immediate
3396:
3397: Cond: [IF] postpone [IF] ;Cond
3398: Cond: [THEN] postpone [THEN] ;Cond
3399: Cond: [ELSE] postpone [ELSE] ;Cond
3400:
3401: \ define new [IFDEF] and [IFUNDEF] 20may93jaw
3402:
3403: : defined? tdefined? ;
3404: : needed? needed? ;
3405: : doer? doer? ;
3406:
3407: \ we want to use IFDEF on compiler directives (e.g. E?) in the source, too
3408:
3409: : directive?
3410: bl word count [ ' target >wordlist ] literal search-wordlist
3411: dup IF nip THEN ;
3412:
3413: : [IFDEF] >in @ directive? swap >in !
3414: 0= IF tdefined? ELSE name 2drop true THEN
3415: postpone [IF] ;
3416:
3417: : [IFUNDEF] tdefined? 0= postpone [IF] ;
3418:
3419: Cond: [IFDEF] postpone [IFDEF] ;Cond
3420:
3421: Cond: [IFUNDEF] postpone [IFUNDEF] ;Cond
3422:
3423: \ C: \- \+ Conditional Compiling 09jun93jaw
3424:
3425: : C: >in @ tdefined? 0=
3426: IF >in ! X :
3427: ELSE drop
3428: BEGIN bl word dup c@
3429: IF count comment? s" ;" compare 0= ?EXIT
3430: ELSE refill 0= ABORT" CROSS: Out of Input while C:"
3431: THEN
3432: AGAIN
3433: THEN ;
3434:
3435: : d? d? ;
3436:
3437: \G doesn't skip line when debug switch is on
3438: : \D D? 0= IF postpone \ THEN ;
3439:
3440: \G interprets the line if word is not defined
3441: : \- tdefined? IF postpone \ THEN ;
3442:
3443: \G interprets the line if word is defined
3444: : \+ tdefined? 0= IF postpone \ THEN ;
3445:
3446: Cond: \- \- ;Cond
3447: Cond: \+ \+ ;Cond
3448: Cond: \D \D ;Cond
3449:
3450: : ?? bl word find IF execute ELSE drop 0 THEN ;
3451:
3452: : needed:
3453: \G defines ghost for words that we want to be compiled
3454: BEGIN >in @ bl word c@ WHILE >in ! Ghost drop REPEAT drop ;
3455:
3456: \ words that should be in minimal
3457:
3458: create s-buffer 50 chars allot
3459:
3460: bigendian Constant bigendian
3461:
3462: : here there ;
3463: : equ constant ;
3464: : mark there constant ;
3465:
3466: \ compiler directives
3467: : >ram >ram ;
3468: : >rom >rom ;
3469: : >auto >auto ;
3470: : >tempdp >tempdp ;
3471: : tempdp> tempdp> ;
3472: : const constflag on ;
3473:
3474: : Redefinitions-start
3475: \G Starts a redefinition section. Warnings are disabled and
3476: \G existing ghosts are reused. This is used in the kernel
3477: \G where ( and \ and the like are redefined
3478: twarnings off warnings off reuse-ghosts on ;
3479:
3480: : Redefinitions-end
3481: \G Ends a redefinition section. Warnings are enabled again.
3482: twarnings on warnings on reuse-ghosts off ;
3483:
3484: : warnings name 3 =
3485: IF twarnings off warnings off ELSE twarnings on warnings on THEN drop ;
3486:
3487: : | ;
3488: \ : | NoHeaderFlag on ; \ This is broken (damages the last word)
3489:
3490: : save-cross save-cross ;
3491: : save-region save-region ;
3492: : tdump swap >image swap dump ;
3493:
3494: also forth
3495: [IFDEF] Label : Label defempty? Label ; [THEN]
3496: [IFDEF] start-macros : start-macros defempty? start-macros ; [THEN]
3497: \ [IFDEF] builttag : builttag builttag ; [THEN]
3498: previous
3499:
3500: : s" [char] " parse s-buffer place s-buffer count ; \ for environment?
3501: : + + ;
3502: : 1+ 1 + ;
3503: : 2+ 2 + ;
3504: : 1- 1- ;
3505: : - - ;
3506: : and and ;
3507: : or or ;
3508: : 2* 2* ;
3509: : * * ;
3510: : / / ;
3511: : dup dup ;
3512: : over over ;
3513: : swap swap ;
3514: : rot rot ;
3515: : drop drop ;
3516: : = = ;
3517: : 0= 0= ;
3518: : lshift lshift ;
3519: : 2/ 2/ ;
3520: \ : . . ;
3521:
3522: : all-words ['] forced? IS skip? ;
3523: : needed-words ['] needed? IS skip? ;
3524: : undef-words ['] defined2? IS skip? ;
3525: : skipdef skipdef ;
3526:
3527: : \ postpone \ ; immediate
3528: : \G T-\G ; immediate
3529: : ( postpone ( ; immediate
3530: : include bl word count included ;
3531: : included swap >image swap included ;
3532: : require require ;
3533: : needs require ;
3534: : .( [char] ) parse type ;
3535: : ." [char] " parse type ;
3536: : cr cr ;
3537:
3538: : times 0 ?DO dup X c, LOOP drop ; \ used for space table creation
3539:
3540: \ only forth also cross also minimal definitions order
3541:
3542: \ cross-compiler words
3543:
3544: : decimal decimal [g'] decimal >exec2 @ ?dup IF EXECUTE THEN ;
3545: : hex hex [g'] hex >exec2 @ ?dup IF EXECUTE THEN ;
3546:
3547: \ : tudp X tudp ;
3548: \ : tup X tup ;
3549:
3550: : doc-off false to-doc ! ;
3551: : doc-on true to-doc ! ;
3552:
3553: : declareunique ( "name" -- )
3554: \G Sets the unique flag for a ghost. The assembler output
3555: \G generates labels with the ghostname concatenated with the address
3556: \G while cross-compiling. The address is concatenated
3557: \G because we have double occurences of the same name.
3558: \G If we want to reference the labels from the assembler or C
3559: \G code we declare them unique, so the address is skipped.
3560: Ghost >ghost-flags dup @ <unique> or swap ! ;
3561:
3562: \ [IFDEF] dbg : dbg dbg ; [THEN]
3563:
3564: \ for debugging...
3565: \ : dbg dbg ;
3566: : horder order ;
3567: : hwords words ;
3568: \ : words also ghosts
3569: \ words previous ;
3570: : .s .s ;
3571: : bye bye ;
3572:
3573: \ dummy
3574: : group 0 word drop ;
3575:
3576: \ turnkey direction
3577: : H forth ; immediate
3578: : T minimal ; immediate
3579: : G ghosts ; immediate
3580:
3581:
3582: \ these ones are pefered:
3583:
3584: : unlock previous forth also cross ;
3585:
3586: \ also minimal
3587: >cross
3588:
3589: : turnkey
3590: ghosts-wordlist 1 set-order
3591: also target definitions
3592: also Minimal also ;
3593:
3594: >minimal
3595:
3596: : [[+++
3597: turnkey unlock ;
3598:
3599: unlock definitions also minimal
3600:
3601: : lock turnkey ;
3602:
3603: Defer +++]]-hook
3604: : +++]] +++]]-hook lock ;
3605:
3606: LOCK
3607: \ load cross compiler extension defined in mach file
3608:
3609: UNLOCK >CROSS
3610:
3611: [IFDEF] extend-cross extend-cross [THEN]
3612:
3613: LOCK
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