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