Annotation of gforth/cross.fs, revision 1.116
1.1 anton 1: \ CROSS.FS The Cross-Compiler 06oct92py
2: \ Idea and implementation: Bernd Paysan (py)
1.30 anton 3:
1.86 anton 4: \ Copyright (C) 1995,1996,1997,1998,1999,2000 Free Software Foundation, Inc.
1.30 anton 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
1.87 anton 20: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1 anton 21:
1.67 jwilke 22: 0
23: [IF]
24:
25: ToDo:
1.107 jwilke 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,
1.67 jwilke 31:
32: [THEN]
1.48 anton 33:
1.77 jwilke 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:
1.78 jwilke 56: : T previous Ghosts also Target ; immediate
1.77 jwilke 57: : G Ghosts ; immediate
58: : H previous Forth also Cross ; immediate
59:
60: forth definitions
61:
1.78 jwilke 62: : T previous Ghosts also Target ; immediate
1.77 jwilke 63: : G Ghosts ; immediate
64:
1.105 jwilke 65:
1.77 jwilke 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 )
1.78 jwilke 139: over [char] ' =
140: IF \ a ' alone is rather unusual :-)
141: drop char+ c@ 0 true EXIT
142: THEN
1.77 jwilke 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]
1.48 anton 204:
1.115 jwilke 205: \ this provides assert( and struct stuff
206: \GFORTH [IFUNDEF] assert1(
207: \GFORTH also forth definitions require assert.fs previous
208: \GFORTH [THEN]
209:
210: >CROSS
211:
1.52 jwilke 212: hex \ the defualt base for the cross-compiler is hex !!
1.78 jwilke 213: \ Warnings off
1.52 jwilke 214:
215: \ words that are generaly useful
216:
1.59 pazsan 217: : KB 400 * ;
1.52 jwilke 218: : >wordlist ( vocabulary-xt -- wordlist-struct )
219: also execute get-order swap >r 1- set-order r> ;
220:
221: : umax 2dup u< IF swap THEN drop ;
222: : umin 2dup u> IF swap THEN drop ;
1.1 anton 223:
1.23 pazsan 224: : string, ( c-addr u -- )
225: \ puts down string as cstring
226: dup c, here swap chars dup allot move ;
1.5 pazsan 227:
1.77 jwilke 228: : ," [char] " parse string, ;
229:
1.52 jwilke 230: : SetValue ( n -- <name> )
1.54 pazsan 231: \G Same behaviour as "Value" if the <name> is not defined
232: \G Same behaviour as "to" if <name> is defined
1.52 jwilke 233: \G SetValue searches in the current vocabulary
1.68 jwilke 234: save-input bl word >r restore-input throw r> count
235: get-current search-wordlist
236: IF drop >r
237: \ we have to set current to be topmost context wordlist
238: get-order get-order get-current swap 1+ set-order
239: r> ['] to execute
1.74 jwilke 240: set-order
1.68 jwilke 241: ELSE Value THEN ;
1.52 jwilke 242:
243: : DefaultValue ( n -- <name> )
1.54 pazsan 244: \G Same behaviour as "Value" if the <name> is not defined
245: \G DefaultValue searches in the current vocabulary
1.52 jwilke 246: save-input bl word >r restore-input throw r> count
247: get-current search-wordlist
1.56 pazsan 248: IF bl word drop 2drop ELSE Value THEN ;
1.1 anton 249:
250: hex
251:
1.52 jwilke 252: \ 1 Constant Cross-Flag \ to check whether assembler compiler plug-ins are
253: \ for cross-compiling
254: \ No! we use "[IFUNDEF]" there to find out whether we are target compiling!!!
255:
256: : comment? ( c-addr u -- c-addr u )
257: 2dup s" (" compare 0=
258: IF postpone (
259: ELSE 2dup s" \" compare 0= IF postpone \ THEN
260: THEN ;
261:
1.105 jwilke 262: : X bl word count [ ' target >wordlist ] Literal search-wordlist
263: IF state @ IF compile,
264: ELSE execute THEN
265: ELSE -1 ABORT" Cross: access method not supported!"
266: THEN ; immediate
267:
1.52 jwilke 268: \ Begin CROSS COMPILER:
269:
1.74 jwilke 270: \ debugging
1.52 jwilke 271:
1.74 jwilke 272: 0 [IF]
273:
274: This implements debugflags for the cross compiler and the compiled
275: images. It works identical to the has-flags in the environment.
276: The debugflags are defined in a vocabluary. If the word exists and
277: its value is true, the flag is switched on.
278:
279: [THEN]
280:
1.77 jwilke 281: >CROSS
282:
1.74 jwilke 283: Vocabulary debugflags \ debug flags for cross
284: also debugflags get-order over
285: Constant debugflags-wl
286: set-order previous
287:
288: : DebugFlag
289: get-current >r debugflags-wl set-current
290: SetValue
291: r> set-current ;
292:
293: : Debug? ( adr u -- flag )
294: \G return true if debug flag is defined or switched on
295: debugflags-wl search-wordlist
296: IF EXECUTE
297: ELSE false THEN ;
298:
299: : D? ( <name> -- flag )
300: \G return true if debug flag is defined or switched on
301: \G while compiling we do not return the current value but
302: bl word count debug? ;
303:
304: : [d?]
305: \G compile the value-xt so the debug flag can be switched
306: \G the flag must exist!
307: bl word count debugflags-wl search-wordlist
308: IF compile,
309: ELSE -1 ABORT" unknown debug flag"
310: \ POSTPONE false
311: THEN ; immediate
1.54 pazsan 312:
1.77 jwilke 313: \ \ -------------------- source file
314:
315: decimal
316:
317: Variable cross-file-list
318: 0 cross-file-list !
319: Variable target-file-list
320: 0 target-file-list !
321: Variable host-file-list
322: 0 host-file-list !
323:
324: cross-file-list Value file-list
325: 0 Value source-desc
326:
327: \ file loading
328:
329: : >fl-id 1 cells + ;
330: : >fl-name 2 cells + ;
331:
332: Variable filelist 0 filelist !
333: Create NoFile ," #load-file#"
334:
335: : loadfile ( -- adr )
336: source-desc ?dup IF >fl-name ELSE NoFile THEN ;
337:
338: : sourcefilename ( -- adr len )
339: loadfile count ;
340:
341: \ANSI : sourceline# 0 ;
342:
343: \ \ -------------------- path handling from kernel/paths.fs
344:
345: \ paths.fs path file handling 03may97jaw
346:
347: \ -Changing the search-path:
348: \ fpath+ <path> adds a directory to the searchpath
349: \ fpath= <path>|<path> makes complete now searchpath
350: \ seperator is |
351: \ .fpath displays the search path
352: \ remark I:
353: \ a ./ in the beginning of filename is expanded to the directory the
354: \ current file comes from. ./ can also be included in the search-path!
355: \ ~+/ loads from the current working directory
356:
357: \ remark II:
358: \ if there is no sufficient space for the search path increase it!
359:
360:
361: \ -Creating custom paths:
362:
363: \ It is possible to use the search mechanism on yourself.
364:
365: \ Make a buffer for the path:
366: \ create mypath 100 chars , \ maximum length (is checked)
367: \ 0 , \ real len
368: \ 100 chars allot \ space for path
369: \ use the same functions as above with:
370: \ mypath path+
371: \ mypath path=
372: \ mypath .path
373:
374: \ do a open with the search path:
375: \ open-path-file ( adr len path -- fd adr len ior )
376: \ the file is opened read-only; if the file is not found an error is generated
377:
378: \ questions to: wilke@jwdt.com
379:
380: [IFUNDEF] +place
381: : +place ( adr len adr )
382: 2dup >r >r
383: dup c@ char+ + swap move
384: r> r> dup c@ rot + swap c! ;
385: [THEN]
386:
387: [IFUNDEF] place
388: : place ( c-addr1 u c-addr2 )
389: 2dup c! char+ swap move ;
390: [THEN]
391:
392: \ if we have path handling, use this and the setup of it
393: [IFUNDEF] open-fpath-file
394:
395: create sourcepath 1024 chars , 0 , 1024 chars allot \ !! make this dynamic
396: sourcepath value fpath
397:
398: : also-path ( adr len path^ -- )
399: >r
400: \ len check
401: r@ cell+ @ over + r@ @ u> ABORT" path buffer too small!"
402: \ copy into
403: tuck r@ cell+ dup @ cell+ + swap cmove
404: \ make delimiter
405: 0 r@ cell+ dup @ cell+ + 2 pick + c! 1 + r> cell+ +!
406: ;
407:
408: : only-path ( adr len path^ -- )
409: dup 0 swap cell+ ! also-path ;
410:
411: : path+ ( path-addr "dir" -- ) \ gforth
412: \G Add the directory @var{dir} to the search path @var{path-addr}.
413: name rot also-path ;
414:
415: : fpath+ ( "dir" ) \ gforth
416: \G Add directory @var{dir} to the Forth search path.
417: fpath path+ ;
418:
419: : path= ( path-addr "dir1|dir2|dir3" ) \ gforth
420: \G Make a complete new search path; the path separator is |.
421: name 2dup bounds ?DO i c@ [char] | = IF 0 i c! THEN LOOP
422: rot only-path ;
423:
424: : fpath= ( "dir1|dir2|dir3" ) \ gforth
425: \G Make a complete new Forth search path; the path separator is |.
426: fpath path= ;
427:
428: : path>counted cell+ dup cell+ swap @ ;
429:
430: : next-path ( adr len -- adr2 len2 )
431: 2dup 0 scan
432: dup 0= IF 2drop 0 -rot 0 -rot EXIT THEN
433: >r 1+ -rot r@ 1- -rot
434: r> - ;
435:
436: : previous-path ( path^ -- )
437: dup path>counted
438: BEGIN tuck dup WHILE repeat ;
439:
440: : .path ( path-addr -- ) \ gforth
441: \G Display the contents of the search path @var{path-addr}.
442: path>counted
443: BEGIN next-path dup WHILE type space REPEAT 2drop 2drop ;
444:
445: : .fpath ( -- ) \ gforth
446: \G Display the contents of the Forth search path.
447: fpath .path ;
448:
449: : absolut-path? ( addr u -- flag ) \ gforth
450: \G A path is absolute if it starts with a / or a ~ (~ expansion),
451: \G or if it is in the form ./*, extended regexp: ^[/~]|./, or if
452: \G it has a colon as second character ("C:..."). Paths simply
453: \G containing a / are not absolute!
454: 2dup 2 u> swap 1+ c@ [char] : = and >r \ dos absoulte: c:/....
455: over c@ [char] / = >r
456: over c@ [char] ~ = >r
457: \ 2dup 3 min S" ../" compare 0= r> or >r \ not catered for in expandtopic
458: 2 min S" ./" compare 0=
459: r> r> r> or or or ;
460:
461: Create ofile 0 c, 255 chars allot
462: Create tfile 0 c, 255 chars allot
463:
464: : pathsep? dup [char] / = swap [char] \ = or ;
465:
466: : need/ ofile dup c@ + c@ pathsep? 0= IF s" /" ofile +place THEN ;
467:
468: : extractpath ( adr len -- adr len2 )
469: BEGIN dup WHILE 1-
470: 2dup + c@ pathsep? IF EXIT THEN
471: REPEAT ;
472:
473: : remove~+ ( -- )
474: ofile count 3 min s" ~+/" compare 0=
475: IF
476: ofile count 3 /string ofile place
477: THEN ;
478:
479: : expandtopic ( -- ) \ stack effect correct? - anton
480: \ expands "./" into an absolute name
481: ofile count 2 min s" ./" compare 0=
482: IF
483: ofile count 1 /string tfile place
484: 0 ofile c! sourcefilename extractpath ofile place
485: ofile c@ IF need/ THEN
486: tfile count over c@ pathsep? IF 1 /string THEN
487: ofile +place
488: THEN ;
489:
490: : compact.. ( adr len -- adr2 len2 )
1.85 pazsan 491: \ deletes phrases like "xy/.." out of our directory name 2dec97jaw
492: over swap
493: BEGIN dup WHILE
494: dup >r '/ scan 2dup 4 min s" /../" compare 0=
495: IF
496: dup r> - >r 4 /string over r> + 4 -
497: swap 2dup + >r move dup r> over -
498: ELSE
499: rdrop dup 1 min /string
500: THEN
501: REPEAT drop over - ;
1.77 jwilke 502:
503: : reworkdir ( -- )
504: remove~+
505: ofile count compact..
506: nip ofile c! ;
507:
508: : open-ofile ( -- fid ior )
509: \G opens the file whose name is in ofile
510: expandtopic reworkdir
511: ofile count r/o open-file ;
512:
513: : check-path ( adr1 len1 adr2 len2 -- fd 0 | 0 <>0 )
514: 0 ofile ! >r >r ofile place need/
515: r> r> ofile +place
516: open-ofile ;
517:
518: : open-path-file ( addr1 u1 path-addr -- wfileid addr2 u2 0 | ior ) \ gforth
519: \G Look in path @var{path-addr} for the file specified by @var{addr1 u1}.
520: \G If found, the resulting path and an open file descriptor
521: \G are returned. If the file is not found, @var{ior} is non-zero.
522: >r
523: 2dup absolut-path?
524: IF rdrop
525: ofile place open-ofile
526: dup 0= IF >r ofile count r> THEN EXIT
527: ELSE r> path>counted
528: BEGIN next-path dup
529: WHILE 5 pick 5 pick check-path
530: 0= IF >r 2drop 2drop r> ofile count 0 EXIT ELSE drop THEN
531: REPEAT
532: 2drop 2drop 2drop -38
533: THEN ;
534:
535: : open-fpath-file ( addr1 u1 -- wfileid addr2 u2 0 | ior ) \ gforth
536: \G Look in the Forth search path for the file specified by @var{addr1 u1}.
537: \G If found, the resulting path and an open file descriptor
538: \G are returned. If the file is not found, @var{ior} is non-zero.
539: fpath open-path-file ;
540:
541: fpath= ~+
542:
543: [THEN]
544:
545: \ \ -------------------- include require 13may99jaw
546:
547: >CROSS
548:
549: : add-included-file ( adr len -- adr )
550: dup >fl-name char+ allocate throw >r
551: file-list @ r@ ! r@ file-list !
552: r@ >fl-name place r> ;
553:
554: : included? ( c-addr u -- f )
555: file-list
556: BEGIN @ dup
557: WHILE >r 2dup r@ >fl-name count compare 0=
558: IF rdrop 2drop true EXIT THEN
559: r>
560: REPEAT
561: 2drop drop false ;
562:
563: false DebugFlag showincludedfiles
564:
565: : included1 ( fd adr u -- )
566: \ include file adr u / fd
567: \ we don't use fd with include-file, because the forth system
568: \ doesn't know the name of the file to get a nice error report
569: [d?] showincludedfiles
570: IF cr ." Including: " 2dup type ." ..." THEN
571: rot close-file throw
572: source-desc >r
573: add-included-file to source-desc
574: sourcefilename
575: ['] included catch
576: r> to source-desc
577: throw ;
578:
579: : included ( adr len -- )
580: cross-file-list to file-list
581: open-fpath-file throw
582: included1 ;
583:
584: : required ( adr len -- )
585: cross-file-list to file-list
586: open-fpath-file throw \ 2dup cr ." R:" type
587: 2dup included?
588: IF 2drop close-file throw
589: ELSE included1
590: THEN ;
591:
592: : include bl word count included ;
593:
594: : require bl word count required ;
595:
1.78 jwilke 596: 0 [IF]
597:
1.77 jwilke 598: also forth definitions previous
599:
600: : included ( adr len -- ) included ;
601:
602: : required ( adr len -- ) required ;
603:
604: : include include ;
605:
606: : require require ;
607:
1.78 jwilke 608: [THEN]
609:
1.77 jwilke 610: >CROSS
611: hex
612:
613: \ \ -------------------- Error Handling 05aug97jaw
614:
615: \ Flags
616:
617: also forth definitions \ these values may be predefined before
618: \ the cross-compiler is loaded
619:
620: false DefaultValue stack-warn \ check on empty stack at any definition
621: false DefaultValue create-forward-warn \ warn on forward declaration of created words
622:
623: previous >CROSS
624:
625: : .dec
626: base @ decimal swap . base ! ;
627:
628: : .sourcepos
629: cr sourcefilename type ." :"
630: sourceline# .dec ;
631:
632: : warnhead
633: \G display error-message head
634: \G perhaps with linenumber and filename
635: .sourcepos ." Warning: " ;
636:
637: : empty? depth IF .sourcepos ." Stack not empty!" THEN ;
638:
639: stack-warn [IF]
640: : defempty? empty? ;
641: [ELSE]
642: : defempty? ; immediate
643: [THEN]
644:
1.105 jwilke 645: \ \ -------------------- Compiler Plug Ins 01aug97jaw
646:
647: >CROSS
648:
649: \ Compiler States
650:
651: Variable comp-state
652: 0 Constant interpreting
653: 1 Constant compiling
654: 2 Constant resolving
655: 3 Constant assembling
656:
657: : compiling? comp-state @ compiling = ;
658:
659: : pi-undefined -1 ABORT" Plugin undefined" ;
660:
661: : Plugin ( -- : pluginname )
662: Create
663: \ for normal cross-compiling only one action
664: \ exists, this fields are identical. For the instant
665: \ simulation environment we need, two actions for each plugin
666: \ the target one and the one that generates the simulation code
667: ['] pi-undefined , \ action
668: ['] pi-undefined , \ target plugin action
669: 8765 , \ plugin magic
670: DOES> perform ;
671:
672: Plugin DummyPlugin
673:
674: : 'PI ( -- addr : pluginname )
675: ' >body dup 2 cells + @ 8765 <> ABORT" not a plugin" ;
676:
677: : plugin-of ( xt -- : pluginname )
678: dup 'PI 2! ;
679:
680: : action-of ( xt -- : plunginname )
681: 'PI cell+ ! ;
682:
683: : TPA ( -- : plugin )
684: \ target plugin action
685: \ executes current target action of plugin
686: 'PI cell+ POSTPONE literal POSTPONE perform ; immediate
687:
688: Variable ppi-temp 0 ppi-temp !
689:
690: : pa:
691: \g define plugin action
692: ppi-temp @ ABORT" pa: definition not closed"
693: 'PI ppi-temp ! :noname ;
694:
695: : ;pa
696: \g end a definition for plugin action
697: POSTPONE ; ppi-temp @ ! 0 ppi-temp ! ; immediate
698:
699:
1.107 jwilke 700: Plugin dlit, ( d -- ) \ compile numerical value the target
1.105 jwilke 701: Plugin lit, ( n -- )
702: Plugin alit, ( n -- )
703:
704: Plugin branch, ( target-addr -- ) \ compiles a branch
705: Plugin ?branch, ( target-addr -- ) \ compiles a ?branch
706: Plugin branchmark, ( -- branch-addr ) \ reserves room for a branch
707: Plugin ?branchmark, ( -- branch-addr ) \ reserves room for a ?branch
708: Plugin ?domark, ( -- branch-addr ) \ reserves room for a ?do branch
709: Plugin branchto, ( -- ) \ actual program position is target of a branch (do e.g. alignment)
710: ' NOOP plugin-of branchto,
711: Plugin branchtoresolve, ( branch-addr -- ) \ resolves a forward reference from branchmark
712: Plugin branchtomark, ( -- target-addr ) \ marks a branch destination
713:
714: Plugin colon, ( tcfa -- ) \ compiles call to tcfa at current position
715: Plugin prim, ( tcfa -- ) \ compiles primitive invocation
716: Plugin colonmark, ( -- addr ) \ marks a colon call
717: Plugin colon-resolve ( tcfa addr -- )
718:
719: Plugin addr-resolve ( target-addr addr -- )
720: Plugin doer-resolve ( ghost res-pnt target-addr addr -- ghost res-pnt )
721:
722: Plugin ncontrols? ( [ xn ... x1 ] n -- ) \ checks wheter n control structures are open
723: Plugin if, ( -- if-token )
724: Plugin else, ( if-token -- if-token )
725: Plugin then, ( if-token -- )
726: Plugin ahead,
727: Plugin begin,
728: Plugin while,
729: Plugin until,
730: Plugin again,
731: Plugin repeat,
732: Plugin cs-swap ( x1 x2 -- x2 x1 )
733:
734: Plugin case, ( -- n )
735: Plugin of, ( n -- x1 n )
736: Plugin endof, ( x1 n -- x2 n )
737: Plugin endcase, ( x1 .. xn n -- )
738:
739: Plugin do, ( -- do-token )
740: Plugin ?do, ( -- ?do-token )
741: Plugin for, ( -- for-token )
742: Plugin loop, ( do-token / ?do-token -- )
743: Plugin +loop, ( do-token / ?do-token -- )
744: Plugin next, ( for-token )
745: Plugin leave, ( -- )
746: Plugin ?leave, ( -- )
747:
748: [IFUNDEF] ca>native
749: Plugin ca>native
750: [THEN]
751:
752: Plugin doprim, \ compiles start of a primitive
753: Plugin docol, \ compiles start of a colon definition
754: Plugin doer,
755: Plugin fini, \ compiles end of definition ;s
756: Plugin doeshandler,
757: Plugin dodoes,
758:
759: Plugin colon-start
760: ' noop plugin-of colon-start
761: Plugin colon-end
762: ' noop plugin-of colon-end
763:
764: Plugin ]comp \ starts compilation
765: ' noop plugin-of ]comp
766: Plugin comp[ \ ends compilation
767: ' noop plugin-of comp[
768:
769: Plugin t>body \ we need the system >body
770: \ and the target >body
771:
772: >TARGET
773: : >body t>body ;
774:
775:
1.103 jwilke 776: \ Ghost Builder 06oct92py
777:
1.105 jwilke 778: >CROSS
1.103 jwilke 779: hex
1.105 jwilke 780: \ Values for ghost magic
1.103 jwilke 781: 4711 Constant <fwd> 4712 Constant <res>
782: 4713 Constant <imm> 4714 Constant <do:>
783: 4715 Constant <skip>
784:
1.105 jwilke 785: \ Bitmask for ghost flags
1.103 jwilke 786: 1 Constant <unique>
1.105 jwilke 787: 2 Constant <primitive>
788:
789: \ FXIME: move this to general stuff?
790: : set-flag ( addr flag -- )
791: over @ or swap ! ;
792:
793: : reset-flag ( addr flag -- )
794: invert over @ and swap ! ;
795:
796: : get-flag ( addr flag -- f )
797: swap @ and 0<> ;
798:
1.103 jwilke 799:
800: Struct
1.52 jwilke 801:
1.103 jwilke 802: \ link to next ghost (always the first element)
803: cell% field >next-ghost
1.52 jwilke 804:
1.103 jwilke 805: \ type of ghost
806: cell% field >magic
807:
808: \ pointer where ghost is in target, or if unresolved
809: \ points to the where we have to resolve (linked-list)
810: cell% field >link
1.52 jwilke 811:
1.106 jwilke 812: \ execution semantics (while target compiling) of ghost
1.103 jwilke 813: cell% field >exec
1.52 jwilke 814:
1.106 jwilke 815: \ compilation action of this ghost; this is what is
816: \ done to compile a call (or whatever) to this definition.
817: \ E.g. >comp contains the semantic of postpone s"
818: \ whereas >exec-compile contains the semantic of s"
1.105 jwilke 819: cell% field >comp
820:
1.106 jwilke 821: \ Compilation sematics (while parsing) of this ghost. E.g.
822: \ "\" will skip the rest of line.
823: \ These semantics are defined by Cond: and
824: \ if a word is made immediate in instant, then the >exec2 field
825: \ gets copied to here
1.103 jwilke 826: cell% field >exec-compile
1.52 jwilke 827:
1.106 jwilke 828: \ Additional execution semantics of this ghost. This is used
829: \ for code generated by instant and for the doer-xt of created
830: \ words
1.103 jwilke 831: cell% field >exec2
1.52 jwilke 832:
1.103 jwilke 833: cell% field >created
1.52 jwilke 834:
1.103 jwilke 835: \ the xt of the created ghost word itself
836: cell% field >ghost-xt
1.52 jwilke 837:
1.103 jwilke 838: \ pointer to the counted string of the assiciated
839: \ assembler label
840: cell% field >asm-name
1.52 jwilke 841:
1.103 jwilke 842: \ mapped primitives have a special address, so
843: \ we are able to detect them
844: cell% field >asm-dummyaddr
845:
846: \ for builder (create, variable...) words
847: \ the execution symantics of words built are placed here
848: \ this is a doer ghost or a dummy ghost
849: cell% field >do:ghost
1.93 pazsan 850:
1.103 jwilke 851: cell% field >ghost-flags
1.93 pazsan 852:
1.103 jwilke 853: cell% field >ghost-name
1.52 jwilke 854:
1.103 jwilke 855: End-Struct ghost-struct
1.52 jwilke 856:
1.103 jwilke 857: Variable ghost-list
858: 0 ghost-list !
1.52 jwilke 859:
860: Variable executed-ghost \ last executed ghost, needed in tcreate and gdoes>
1.103 jwilke 861: \ Variable last-ghost \ last ghost that is created
1.52 jwilke 862: Variable last-header-ghost \ last ghost definitions with header
863:
1.103 jwilke 864: \ space for ghosts resolve structure
865: \ we create ghosts in a sepearte space
866: \ and not to the current host dp, because this
867: \ gives trouble with instant while compiling and creating
868: \ a ghost for a forward reference
869: \ BTW: we cannot allocate another memory region
870: \ because allot will check the overflow!!
871: Variable cross-space-dp
872: Create cross-space 250000 allot here 100 allot align
873: Constant cross-space-end
874: cross-space cross-space-dp !
875: Variable cross-space-dp-orig
876:
877: : cross-space-used cross-space-dp @ cross-space - ;
878:
879: : >space ( -- )
880: dp @ cross-space-dp-orig !
881: cross-space-dp @ dp ! ;
882:
883: : space> ( -- )
884: dp @ dup cross-space-dp !
885: cross-space-end u> ABORT" CROSS: cross-space overflow"
886: cross-space-dp-orig @ dp ! ;
887:
1.106 jwilke 888: \ this is just for debugging, to see this in the backtrace
1.103 jwilke 889: : execute-exec execute ;
890: : execute-exec2 execute ;
891: : execute-exec-compile execute ;
892:
893: : NoExec
894: executed-ghost @ >exec2 @
895: ?dup
896: IF execute-exec2
897: ELSE true ABORT" CROSS: Don't execute ghost, or immediate target word"
898: THEN ;
899:
1.105 jwilke 900: Defer is-forward
901:
1.103 jwilke 902: : (ghostheader) ( -- )
1.105 jwilke 903: ghost-list linked <fwd> , 0 , ['] NoExec , ['] is-forward ,
904: 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , ;
1.103 jwilke 905:
906: : ghostheader ( -- ) (ghostheader) 0 , ;
907:
908: ' Ghosts >wordlist Constant ghosts-wordlist
909:
910: \ the current wordlist for ghost definitions in the host
911: ghosts-wordlist Value current-ghosts
912:
1.52 jwilke 913: : Make-Ghost ( "name" -- ghost )
1.103 jwilke 914: >space
915: \ save current and create in ghost vocabulary
916: get-current >r current-ghosts set-current
917: >in @ Create >in !
918: \ some forth systems like iForth need the immediate directly
919: \ after the word is created
920: \ restore current
921: r> set-current
922: here (ghostheader)
923: bl word count string, align
924: space>
925: \ set ghost-xt field by doing a search
926: dup >ghost-name count
927: current-ghosts search-wordlist
928: 0= ABORT" CROSS: Just created, must be there!"
929: over >ghost-xt !
930: DOES>
931: dup executed-ghost !
932: >exec @ execute-exec ;
1.52 jwilke 933:
934: \ ghost words 14oct92py
935: \ changed: 10may93py/jaw
936:
1.103 jwilke 937: Defer search-ghosts
938:
939: : (search-ghosts) ( adr len -- cfa true | 0 )
940: current-ghosts search-wordlist ;
941:
942: ' (search-ghosts) IS search-ghosts
943:
944: : gsearch ( addr len -- ghost true | 0 )
945: search-ghosts
946: dup IF swap >body swap THEN ;
947:
948: : gfind ( string -- ghost true / string false )
1.52 jwilke 949: \ searches for string in word-list ghosts
1.103 jwilke 950: \ dup count type space
951: dup >r count gsearch
952: dup IF rdrop ELSE r> swap THEN ;
1.52 jwilke 953:
954: : gdiscover ( xt -- ghost true | xt false )
1.103 jwilke 955: >r ghost-list
1.52 jwilke 956: BEGIN @ dup
1.103 jwilke 957: WHILE dup >magic @ <fwd> <>
958: IF dup >link @ r@ =
959: IF rdrop true EXIT THEN
960: THEN
1.52 jwilke 961: REPEAT
1.103 jwilke 962: drop r> false ;
1.52 jwilke 963:
1.105 jwilke 964: : xt>ghost ( xt -- ghost )
965: gdiscover 0= ABORT" CROSS: ghost not found for this xt" ;
966:
1.103 jwilke 967: : Ghost ( "name" -- ghost )
968: >in @ bl word gfind IF nip EXIT THEN
1.52 jwilke 969: drop >in ! Make-Ghost ;
970:
971: : >ghostname ( ghost -- adr len )
1.103 jwilke 972: >ghost-name count ;
973:
974: : forward? ( ghost -- flag )
975: >magic @ <fwd> = ;
976:
977: : undefined? ( ghost -- flag )
978: >magic @ dup <fwd> = swap <skip> = or ;
979:
980: : immediate? ( ghost -- flag )
981: >magic @ <imm> = ;
982:
983: Variable TWarnings
984: TWarnings on
985: Variable Exists-Warnings
986: Exists-Warnings on
987:
988: : exists-warning ( ghost -- ghost )
989: TWarnings @ Exists-Warnings @ and
990: IF dup >ghostname warnhead type ." exists " THEN ;
991:
992: \ : HeaderGhost Ghost ;
993:
994: Variable reuse-ghosts reuse-ghosts off
995:
996: : HeaderGhost ( "name" -- ghost )
997: >in @
998: bl word count
999: \ 2dup type space
1000: current-ghosts search-wordlist
1001: IF >body dup undefined? reuse-ghosts @ or
1002: IF nip EXIT
1003: ELSE exists-warning
1004: THEN
1005: drop >in !
1006: ELSE >in !
1007: THEN
1008: \ we keep the execution semantics of the prviously
1009: \ defined words, this is a workaround
1010: \ for the redefined \ until vocs work
1011: Make-Ghost ;
1012:
1.78 jwilke 1013: : .ghost ( ghost -- ) >ghostname type ;
1014:
1.77 jwilke 1015: \ ' >ghostname ALIAS @name
1.52 jwilke 1016:
1.115 jwilke 1017: : findghost ( "ghostname" -- ghost )
1018: bl word gfind 0= ABORT" CROSS: Ghost don't exists" ;
1019:
1.103 jwilke 1020: : [G'] ( -- ghost : name )
1021: \G ticks a ghost and returns its address
1.115 jwilke 1022: findghost
1023: state @ IF postpone literal THEN ; immediate
1.103 jwilke 1024:
1.105 jwilke 1025: : g>xt ( ghost -- xt )
1026: \G Returns the xt (cfa) of a ghost. Issues a warning if undefined.
1.103 jwilke 1027: dup undefined? ABORT" CROSS: forward " >link @ ;
1028:
1.105 jwilke 1029: : g>body ( ghost -- body )
1030: \G Returns the body-address (pfa) of a ghost.
1031: \G Issues a warning if undefined (a forward-reference).
1032: g>xt X >body ;
1033:
1.103 jwilke 1034: 1 Constant <label>
1.52 jwilke 1035:
1.103 jwilke 1036: Struct
1037: \ bitmask of address type (not used for now)
1038: cell% field addr-type
1039: \ if this address is an xt, this field points to the ghost
1040: cell% field addr-xt-ghost
1041: \ a bit mask that tells as what part of the cell
1042: \ is refenced from an address pointer, used for assembler generation
1043: cell% field addr-refs
1044: End-Struct addr-struct
1045:
1046: : %allocerase ( align size -- addr )
1047: dup >r %alloc dup r> erase ;
1048:
1049: \ returns the addr struct, define it if 0 reference
1050: : define-addr-struct ( addr -- struct-addr )
1051: dup @ ?dup IF nip EXIT THEN
1052: addr-struct %allocerase tuck swap ! ;
1.75 jwilke 1053:
1.52 jwilke 1054: \ Predefined ghosts 12dec92py
1055:
1.114 jwilke 1056: Ghost - drop \ need a ghost otherwise "-" would be treated as a number
1057:
1.103 jwilke 1058: Ghost 0= drop
1059: Ghost branch Ghost ?branch 2drop
1060: Ghost (do) Ghost (?do) 2drop
1061: Ghost (for) drop
1062: Ghost (loop) Ghost (+loop) 2drop
1063: Ghost (next) drop
1064: Ghost unloop Ghost ;S 2drop
1065: Ghost lit Ghost (compile) Ghost ! 2drop drop
1066: Ghost (does>) Ghost noop 2drop
1067: Ghost (.") Ghost (S") Ghost (ABORT") 2drop drop
1068: Ghost ' drop
1069: Ghost :docol Ghost :doesjump Ghost :dodoes 2drop drop
1070: Ghost :dovar drop
1071: Ghost over Ghost = Ghost drop 2drop drop
1072: Ghost 2drop drop
1073: Ghost 2dup drop
1.115 jwilke 1074: Ghost state drop
1075: Ghost call drop
1076: Ghost @ drop
1077: Ghost useraddr drop
1078: Ghost execute drop
1079: Ghost + drop
1080: Ghost (C") drop
1081: Ghost decimal drop
1082: Ghost hex drop
1.52 jwilke 1083:
1084: \ \ Parameter for target systems 06oct92py
1085:
1.103 jwilke 1086:
1087: >cross
1.52 jwilke 1088: \ we define it ans like...
1089: wordlist Constant target-environment
1090:
1.103 jwilke 1091: \ save information of current dictionary to restore with environ>
1092: Variable env-current
1.52 jwilke 1093:
1094: : >ENVIRON get-current env-current ! target-environment set-current ;
1095: : ENVIRON> env-current @ set-current ;
1.43 pazsan 1096:
1.48 anton 1097: >TARGET
1.43 pazsan 1098:
1.103 jwilke 1099: : environment? ( addr len -- [ x ] true | false )
1100: \G returns the content of environment variable and true or
1101: \G false if not present
1102: target-environment search-wordlist
1103: IF EXECUTE true ELSE false THEN ;
1104:
1105: : $has? ( addr len -- x | false )
1106: \G returns the content of environment variable
1107: \G or false if not present
1108: T environment? H dup IF drop THEN ;
1109:
1110: : e? ( "name" -- x )
1111: \G returns the content of environment variable.
1112: \G The variable is expected to exist. If not, issue an error.
1113: bl word count T environment? H
1114: 0= ABORT" environment variable not defined!" ;
1115:
1116: : has? ( "name" --- x | false )
1117: \G returns the content of environment variable
1118: \G or false if not present
1119: bl word count T $has? H ;
1.52 jwilke 1120:
1.48 anton 1121:
1.54 pazsan 1122: >ENVIRON get-order get-current swap 1+ set-order
1123: true SetValue compiler
1.83 pazsan 1124: true SetValue cross
1.54 pazsan 1125: true SetValue standard-threading
1126: >TARGET previous
1.52 jwilke 1127:
1.77 jwilke 1128: 0
1.103 jwilke 1129: [IFDEF] mach-file drop mach-file count 1 [THEN]
1130: [IFDEF] machine-file drop machine-file 1 [THEN]
1131: [IF] included hex
1.77 jwilke 1132: [ELSE] cr ." No machine description!" ABORT
1133: [THEN]
1.43 pazsan 1134:
1.53 jwilke 1135: >ENVIRON
1136:
1.54 pazsan 1137: T has? ec H
1138: [IF]
1139: false DefaultValue relocate
1140: false DefaultValue file
1141: false DefaultValue OS
1142: false DefaultValue prims
1143: false DefaultValue floating
1144: false DefaultValue glocals
1145: false DefaultValue dcomps
1146: false DefaultValue hash
1147: false DefaultValue xconds
1148: false DefaultValue header
1.105 jwilke 1149: false DefaultValue backtrace
1150: false DefaultValue new-input
1151: false DefaultValue peephole
1.54 pazsan 1152: [THEN]
1153:
1154: true DefaultValue interpreter
1155: true DefaultValue ITC
1156: false DefaultValue rom
1.73 jwilke 1157: true DefaultValue standardthreading
1.53 jwilke 1158:
1.52 jwilke 1159: >TARGET
1.53 jwilke 1160: s" relocate" T environment? H
1.103 jwilke 1161: \ JAW why set NIL to this?!
1162: [IF] drop \ SetValue NIL
1.113 jwilke 1163: [ELSE] >ENVIRON X NIL SetValue relocate
1.53 jwilke 1164: [THEN]
1.113 jwilke 1165: >TARGET
1166:
1167: 0 Constant NIL
1.43 pazsan 1168:
1169: >CROSS
1170:
1.52 jwilke 1171: \ \ Create additional parameters 19jan95py
1.19 pazsan 1172:
1.71 jwilke 1173: \ currently cross only works for host machines with address-unit-bits
1174: \ eual to 8 because of s! and sc!
1175: \ but I start to query the environment just to modularize a little bit
1176:
1177: : check-address-unit-bits ( -- )
1178: \ s" ADDRESS-UNIT-BITS" environment?
1179: \ IF 8 <> ELSE true THEN
1180: \ ABORT" ADDRESS-UNIT-BITS unknown or not equal to 8!"
1181:
1182: \ shit, this doesn't work because environment? is only defined for
1183: \ gforth.fi and not kernl???.fi
1184: ;
1185:
1186: check-address-unit-bits
1187: 8 Constant bits/byte \ we define: byte is address-unit
1188:
1189: 1 bits/byte lshift Constant maxbyte
1.77 jwilke 1190: \ this sets byte size for the target machine, (probably right guess) jaw
1.67 jwilke 1191:
1.19 pazsan 1192: T
1.71 jwilke 1193: NIL Constant TNIL
1194: cell Constant tcell
1195: cell<< Constant tcell<<
1196: cell>bit Constant tcell>bit
1197: bits/char Constant tbits/char
1198: bits/char H bits/byte T /
1199: Constant tchar
1200: float Constant tfloat
1201: 1 bits/char lshift Constant tmaxchar
1202: [IFUNDEF] bits/byte
1203: 8 Constant tbits/byte
1204: [ELSE]
1205: bits/byte Constant tbits/byte
1206: [THEN]
1.19 pazsan 1207: H
1.81 pazsan 1208: tbits/char bits/byte / Constant tbyte
1.71 jwilke 1209:
1.19 pazsan 1210:
1.48 anton 1211: \ Variables 06oct92py
1212:
1213: Variable image
1214: Variable tlast TNIL tlast ! \ Last name field
1215: Variable tlastcfa \ Last code field
1216: Variable bit$
1.52 jwilke 1217:
1218: \ statistics 10jun97jaw
1219:
1220: Variable headers-named 0 headers-named !
1221: Variable user-vars 0 user-vars !
1222:
1.67 jwilke 1223: : target>bitmask-size ( u1 -- u2 )
1224: 1- tcell>bit rshift 1+ ;
1225:
1.105 jwilke 1226: : allocatetarget ( size -- adr )
1.67 jwilke 1227: dup allocate ABORT" CROSS: No memory for target"
1228: swap over swap erase ;
1.52 jwilke 1229:
1.54 pazsan 1230: \ \ memregion.fs
1.52 jwilke 1231:
1232:
1233: Variable last-defined-region \ pointer to last defined region
1234: Variable region-link \ linked list with all regions
1235: Variable mirrored-link \ linked list for mirrored regions
1236: 0 dup mirrored-link ! region-link !
1237:
1238:
1.103 jwilke 1239: : >rname 7 cells + ;
1240: : >rbm 4 cells + ;
1241: : >rmem 5 cells + ;
1242: : >rtype 6 cells + ;
1.67 jwilke 1243: : >rlink 3 cells + ;
1.52 jwilke 1244: : >rdp 2 cells + ;
1245: : >rlen cell+ ;
1246: : >rstart ;
1247:
1.113 jwilke 1248: : (region) ( addr len region -- )
1249: \G change startaddress and length of an existing region
1250: >r r@ last-defined-region !
1251: r@ >rlen ! dup r@ >rstart ! r> >rdp ! ;
1.52 jwilke 1252:
1.103 jwilke 1253: : region ( addr len -- )
1254: \G create a new region
1.52 jwilke 1255: \ check whether predefined region exists
1256: save-input bl word find >r >r restore-input throw r> r> 0=
1257: IF \ make region
1258: drop
1259: save-input create restore-input throw
1260: here last-defined-region !
1261: over ( startaddr ) , ( length ) , ( dp ) ,
1.103 jwilke 1262: region-link linked 0 , 0 , 0 , bl word count string,
1.52 jwilke 1263: ELSE \ store new parameters in region
1264: bl word drop
1.113 jwilke 1265: >body (region)
1.52 jwilke 1266: THEN ;
1267:
1.103 jwilke 1268: : borders ( region -- startaddr endaddr )
1269: \G returns lower and upper region border
1.67 jwilke 1270: dup >rstart @ swap >rlen @ over + ;
1.52 jwilke 1271:
1.103 jwilke 1272: : extent ( region -- startaddr len )
1273: \G returns the really used area
1.67 jwilke 1274: dup >rstart @ swap >rdp @ over - ;
1.52 jwilke 1275:
1.103 jwilke 1276: : area ( region -- startaddr totallen )
1277: \G returns the total area
1.79 jwilke 1278: dup >rstart @ swap >rlen @ ;
1.52 jwilke 1279:
1.103 jwilke 1280: : mirrored
1281: \G mark a region as mirrored
1.52 jwilke 1282: mirrored-link
1.68 jwilke 1283: align linked last-defined-region @ , ;
1.52 jwilke 1284:
1.67 jwilke 1285: : .addr ( u -- )
1286: \G prints a 16 or 32 Bit nice hex value
1.52 jwilke 1287: base @ >r hex
1288: tcell 2 u>
1.77 jwilke 1289: IF s>d <# # # # # [char] . hold # # # # #> type
1.52 jwilke 1290: ELSE s>d <# # # # # # #> type
1.103 jwilke 1291: THEN r> base ! space ;
1.52 jwilke 1292:
1293: : .regions \G display region statistic
1294:
1295: \ we want to list the regions in the right order
1296: \ so first collect all regions on stack
1297: 0 region-link @
1298: BEGIN dup WHILE dup @ REPEAT drop
1299: BEGIN dup
1.67 jwilke 1300: WHILE cr
1301: 0 >rlink - >r
1302: r@ >rname count tuck type
1.52 jwilke 1303: 12 swap - 0 max spaces space
1.67 jwilke 1304: ." Start: " r@ >rstart @ dup .addr space
1305: ." End: " r@ >rlen @ + .addr space
1306: ." DP: " r> >rdp @ .addr
1.52 jwilke 1307: REPEAT drop
1.53 jwilke 1308: s" rom" T $has? H 0= ?EXIT
1.52 jwilke 1309: cr ." Mirrored:"
1310: mirrored-link @
1311: BEGIN dup
1.67 jwilke 1312: WHILE space dup cell+ @ >rname count type @
1.52 jwilke 1313: REPEAT drop cr
1314: ;
1315:
1316: \ -------- predefined regions
1317:
1318: 0 0 region address-space
1319: \ total memory addressed and used by the target system
1320:
1321: 0 0 region dictionary
1322: \ rom area for the compiler
1323:
1.53 jwilke 1324: T has? rom H
1.52 jwilke 1325: [IF]
1326: 0 0 region ram-dictionary mirrored
1327: \ ram area for the compiler
1328: [ELSE]
1329: ' dictionary ALIAS ram-dictionary
1330: [THEN]
1331:
1332: 0 0 region return-stack
1333:
1334: 0 0 region data-stack
1335:
1336: 0 0 region tib-region
1337:
1338: ' dictionary ALIAS rom-dictionary
1339:
1340:
1.105 jwilke 1341: : setup-target ( -- ) \G initialize target's memory space
1.53 jwilke 1342: s" rom" T $has? H
1.52 jwilke 1343: IF \ check for ram and rom...
1.72 jwilke 1344: \ address-space area nip 0<>
1.67 jwilke 1345: ram-dictionary area nip 0<>
1346: rom-dictionary area nip 0<>
1.72 jwilke 1347: and 0=
1.52 jwilke 1348: ABORT" CROSS: define address-space, rom- , ram-dictionary, with rom-support!"
1349: THEN
1350: address-space area nip
1351: IF
1352: address-space area
1353: ELSE
1354: dictionary area
1355: THEN
1.67 jwilke 1356: nip 0=
1.52 jwilke 1357: ABORT" CROSS: define at least address-space or dictionary!!"
1.67 jwilke 1358:
1359: \ allocate target for each region
1360: region-link
1361: BEGIN @ dup
1362: WHILE dup
1363: 0 >rlink - >r
1364: r@ >rlen @
1365: IF \ allocate mem
1.103 jwilke 1366: r@ >rlen @ allocatetarget dup image !
1.67 jwilke 1367: r@ >rmem !
1368:
1.103 jwilke 1369: r@ >rlen @
1.67 jwilke 1370: target>bitmask-size allocatetarget
1.72 jwilke 1371: dup bit$ !
1.103 jwilke 1372: r@ >rbm !
1.67 jwilke 1373:
1.103 jwilke 1374: r@ >rlen @
1375: tcell / 1+ cells allocatetarget r@ >rtype !
1376:
1377: rdrop
1.67 jwilke 1378: ELSE r> drop THEN
1.72 jwilke 1379: REPEAT drop ;
1380:
1.105 jwilke 1381: \ MakeKernel 22feb99jaw
1.72 jwilke 1382:
1.113 jwilke 1383: : makekernel ( targetsize -- )
1384: \G convenience word to setup the memory of the target
1385: \G used by main.fs of the c-engine based systems
1386: 100 swap dictionary (region)
1387: setup-target ;
1.72 jwilke 1388:
1389: >MINIMAL
1390: : makekernel makekernel ;
1391: >CROSS
1.52 jwilke 1392:
1.54 pazsan 1393: \ \ switched tdp for rom support 03jun97jaw
1.52 jwilke 1394:
1395: \ second value is here to store some maximal value for statistics
1396: \ tempdp is also embedded here but has nothing to do with rom support
1397: \ (needs switched dp)
1398:
1399: variable tempdp 0 , \ temporary dp for resolving
1400: variable tempdp-save
1401:
1402: 0 [IF]
1403: variable romdp 0 , \ Dictionary-Pointer for ramarea
1404: variable ramdp 0 , \ Dictionary-Pointer for romarea
1405:
1406: \
1407: variable sramdp \ start of ram-area for forth
1408: variable sromdp \ start of rom-area for forth
1409:
1410: [THEN]
1411:
1412:
1413: 0 value tdp
1414: variable fixed \ flag: true: no automatic switching
1415: \ false: switching is done automatically
1416:
1417: \ Switch-Policy:
1418: \
1419: \ a header is always compiled into rom
1420: \ after a created word (create and variable) compilation goes to ram
1421: \
1422: \ Be careful: If you want to make the data behind create into rom
1423: \ you have to put >rom before create!
1424:
1425: variable constflag constflag off
1426:
1.67 jwilke 1427: : activate ( region -- )
1428: \G next code goes to this region
1429: >rdp to tdp ;
1430:
1.52 jwilke 1431: : (switchram)
1.53 jwilke 1432: fixed @ ?EXIT s" rom" T $has? H 0= ?EXIT
1.67 jwilke 1433: ram-dictionary activate ;
1.52 jwilke 1434:
1435: : switchram
1436: constflag @
1437: IF constflag off ELSE (switchram) THEN ;
1438:
1439: : switchrom
1.67 jwilke 1440: fixed @ ?EXIT rom-dictionary activate ;
1.52 jwilke 1441:
1442: : >tempdp ( addr -- )
1443: tdp tempdp-save ! tempdp to tdp tdp ! ;
1444: : tempdp> ( -- )
1445: tempdp-save @ to tdp ;
1446:
1447: : >ram fixed off (switchram) fixed on ;
1448: : >rom fixed off switchrom fixed on ;
1449: : >auto fixed off switchrom ;
1450:
1451:
1452:
1453: \ : romstart dup sromdp ! romdp ! ;
1454: \ : ramstart dup sramdp ! ramdp ! ;
1455:
1.67 jwilke 1456: \ default compilation goes to rom
1.52 jwilke 1457: \ when romable support is off, only the rom switch is used (!!)
1458: >auto
1459:
1.48 anton 1460: : there tdp @ ;
1461:
1.52 jwilke 1462: >TARGET
1.48 anton 1463:
1.52 jwilke 1464: \ \ Target Memory Handling
1.1 anton 1465:
1466: \ Byte ordering and cell size 06oct92py
1467:
1.19 pazsan 1468: : cell+ tcell + ;
1469: : cells tcell<< lshift ;
1.71 jwilke 1470: : chars tchar * ;
1471: : char+ tchar + ;
1.19 pazsan 1472: : floats tfloat * ;
1.6 anton 1473:
1.1 anton 1474: >CROSS
1.19 pazsan 1475: : cell/ tcell<< rshift ;
1.1 anton 1476: >TARGET
1477: 20 CONSTANT bl
1.52 jwilke 1478: \ TNIL Constant NIL
1.1 anton 1479:
1480: >CROSS
1481:
1.20 pazsan 1482: bigendian
1483: [IF]
1.106 jwilke 1484: : DS! ( d addr -- ) tcell bounds swap 1-
1.20 pazsan 1485: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
1.106 jwilke 1486: : DS@ ( addr -- d ) >r 0 0 r> tcell bounds
1487: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP ;
1.57 pazsan 1488: : Sc! ( n addr -- ) >r s>d r> tchar bounds swap 1-
1489: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
1490: : Sc@ ( addr -- n ) >r 0 0 r> tchar bounds
1491: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ;
1.19 pazsan 1492: [ELSE]
1.106 jwilke 1493: : DS! ( d addr -- ) tcell bounds
1.20 pazsan 1494: DO maxbyte ud/mod rot I c! LOOP 2drop ;
1.106 jwilke 1495: : DS@ ( addr -- n ) >r 0 0 r> tcell bounds swap 1-
1496: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP ;
1.57 pazsan 1497: : Sc! ( n addr -- ) >r s>d r> tchar bounds
1498: DO maxbyte ud/mod rot I c! LOOP 2drop ;
1499: : Sc@ ( addr -- n ) >r 0 0 r> tchar bounds swap 1-
1500: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ;
1.1 anton 1501: [THEN]
1502:
1.106 jwilke 1503: : S! ( n addr -- ) >r s>d r> DS! ;
1504: : S@ ( addr -- n ) DS@ d>s ;
1505:
1.67 jwilke 1506: : taddr>region ( taddr -- region | 0 )
1507: \G finds for a target-address the correct region
1508: \G returns 0 if taddr is not in range of a target memory region
1509: region-link
1510: BEGIN @ dup
1511: WHILE dup >r
1512: 0 >rlink - >r
1513: r@ >rlen @
1514: IF dup r@ borders within
1515: IF r> r> drop nip EXIT THEN
1516: THEN
1517: r> drop
1518: r>
1519: REPEAT
1520: 2drop 0 ;
1521:
1.103 jwilke 1522: : taddr>region-abort ( taddr -- region | 0 )
1523: dup taddr>region dup 0=
1524: IF drop cr ." Wrong address: " .addr
1525: -1 ABORT" Address out of range!"
1526: THEN nip ;
1527:
1.67 jwilke 1528: : (>regionimage) ( taddr -- 'taddr )
1529: dup
1530: \ find region we want to address
1.103 jwilke 1531: taddr>region-abort
1.67 jwilke 1532: >r
1533: \ calculate offset in region
1534: r@ >rstart @ -
1535: \ add regions real address in our memory
1536: r> >rmem @ + ;
1537:
1.103 jwilke 1538: : (>regionbm) ( taddr -- 'taddr bitmaskbaseaddr )
1539: dup
1540: \ find region we want to address
1541: taddr>region-abort
1542: >r
1543: \ calculate offset in region
1544: r@ >rstart @ -
1545: \ add regions real address in our memory
1546: r> >rbm @ ;
1547:
1548: : (>regiontype) ( taddr -- 'taddr )
1549: dup
1550: \ find region we want to address
1551: taddr>region-abort
1552: >r
1553: \ calculate offset in region
1554: r@ >rstart @ - tcell / cells
1555: \ add regions real address in our memory
1556: r> >rtype @ + ;
1557:
1.1 anton 1558: \ Bit string manipulation 06oct92py
1559: \ 9may93jaw
1560: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
1561: : bits ( n -- n ) chars Bittable + c@ ;
1562:
1563: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
1564: : +bit ( addr n -- ) >bit over c@ or swap c! ;
1.4 pazsan 1565: : -bit ( addr n -- ) >bit invert over c@ and swap c! ;
1.67 jwilke 1566:
1.103 jwilke 1567: : @relbit ( taddr -- f ) (>regionbm) swap cell/ >bit swap c@ and ;
1568:
1.84 jwilke 1569: : (relon) ( taddr -- )
1570: [ [IFDEF] fd-relocation-table ]
1571: s" +" fd-relocation-table write-file throw
1572: dup s>d <# #s #> fd-relocation-table write-line throw
1573: [ [THEN] ]
1.103 jwilke 1574: (>regionbm) swap cell/ +bit ;
1.84 jwilke 1575:
1576: : (reloff) ( taddr -- )
1577: [ [IFDEF] fd-relocation-table ]
1578: s" -" fd-relocation-table write-file throw
1579: dup s>d <# #s #> fd-relocation-table write-line throw
1580: [ [THEN] ]
1.103 jwilke 1581: (>regionbm) swap cell/ -bit ;
1.67 jwilke 1582:
1583: : (>image) ( taddr -- absaddr ) image @ + ;
1584:
1585: DEFER >image
1586: DEFER relon
1587: DEFER reloff
1588: DEFER correcter
1589:
1590: T has? relocate H
1591: [IF]
1592: ' (relon) IS relon
1593: ' (reloff) IS reloff
1.103 jwilke 1594: ' (>regionimage) IS >image
1.67 jwilke 1595: [ELSE]
1596: ' drop IS relon
1597: ' drop IS reloff
1.68 jwilke 1598: ' (>regionimage) IS >image
1.67 jwilke 1599: [THEN]
1.1 anton 1600:
1601: \ Target memory access 06oct92py
1602:
1603: : align+ ( taddr -- rest )
1.48 anton 1604: tcell tuck 1- and - [ tcell 1- ] Literal and ;
1.22 anton 1605: : cfalign+ ( taddr -- rest )
1.39 pazsan 1606: \ see kernel.fs:cfaligned
1.43 pazsan 1607: /maxalign tuck 1- and - [ /maxalign 1- ] Literal and ;
1.1 anton 1608:
1609: >TARGET
1610: : aligned ( taddr -- ta-addr ) dup align+ + ;
1611: \ assumes cell alignment granularity (as GNU C)
1612:
1.22 anton 1613: : cfaligned ( taddr1 -- taddr2 )
1.39 pazsan 1614: \ see kernel.fs
1.22 anton 1615: dup cfalign+ + ;
1616:
1.52 jwilke 1617: : @ ( taddr -- w ) >image S@ ;
1618: : ! ( w taddr -- ) >image S! ;
1.57 pazsan 1619: : c@ ( taddr -- char ) >image Sc@ ;
1620: : c! ( char taddr -- ) >image Sc! ;
1.7 anton 1621: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
1.82 pazsan 1622: : 2! ( x1 x2 taddr -- ) T tuck ! cell+ ! H ;
1.1 anton 1623:
1624: \ Target compilation primitives 06oct92py
1625: \ included A! 16may93jaw
1626:
1627: : here ( -- there ) there ;
1628: : allot ( n -- ) tdp +! ;
1.78 jwilke 1629: : , ( w -- ) T here H tcell T allot ! H ;
1630: : c, ( char -- ) T here H tchar T allot c! H ;
1631: : align ( -- ) T here H align+ 0 ?DO bl T c, H tchar +LOOP ;
1.22 anton 1632: : cfalign ( -- )
1.78 jwilke 1633: T here H cfalign+ 0 ?DO bl T c, H tchar +LOOP ;
1.1 anton 1634:
1.71 jwilke 1635: : >address dup 0>= IF tbyte / THEN ; \ ?? jaw
1.59 pazsan 1636: : A! swap >address swap dup relon T ! H ;
1637: : A, ( w -- ) >address T here H relon T , H ;
1.1 anton 1638:
1.103 jwilke 1639:
1640: \ \ -------------------- Host/Target copy etc. 29aug01jaw
1641:
1642:
1643: >CROSS
1644:
1.107 jwilke 1645: : TD! >image DS! ;
1646: : TD@ >image DS@ ;
1647:
1.103 jwilke 1648: : th-count ( taddr -- host-addr len )
1649: \G returns host address of target string
1650: assert1( tbyte 1 = )
1651: dup X c@ swap X char+ >image swap ;
1652:
1653: : ht-move ( haddr taddr len -- )
1654: \G moves data from host-addr to destination in target-addr
1655: \G character by character
1656: swap -rot bounds ?DO I c@ over X c! X char+ LOOP drop ;
1657:
1658: 2Variable last-string
1659:
1660: : ht-string, ( addr count -- )
1661: dup there swap last-string 2!
1662: dup T c, H bounds ?DO I c@ T c, H LOOP ;
1663:
1664: >TARGET
1665:
1666: : count dup X c@ swap X char+ swap ;
1.110 jwilke 1667:
1668: : on -1 -1 rot TD! ;
1.103 jwilke 1669: : off T 0 swap ! H ;
1.1 anton 1670:
1.107 jwilke 1671: : tcmove ( source dest len -- )
1672: \G cmove in target memory
1673: tchar * bounds
1674: ?DO dup T c@ H I T c! H 1+
1675: tchar +LOOP drop ;
1676:
1677: : td, ( d -- )
1678: \G Store a host value as one cell into the target
1679: there tcell X allot TD! ;
1680:
1681: \ \ Load Assembler
1682:
1683: >TARGET
1684: H also Forth definitions
1685:
1686: \ FIXME: should we include the assembler really in the forth
1687: \ dictionary?!?!?!? This conflicts with the existing assembler
1688: \ of the host forth system!!
1689: [IFDEF] asm-include asm-include [THEN] hex
1690:
1691: previous
1692:
1693:
1.52 jwilke 1694: >CROSS
1695:
1.103 jwilke 1696: : (cc) T a, H ; ' (cc) plugin-of colon,
1.105 jwilke 1697: : (prim) T a, H ; ' (prim) plugin-of prim,
1.52 jwilke 1698:
1.105 jwilke 1699: : (cr) >tempdp ]comp prim, comp[ tempdp> ; ' (cr) plugin-of colon-resolve
1.103 jwilke 1700: : (ar) T ! H ; ' (ar) plugin-of addr-resolve
1.54 pazsan 1701: : (dr) ( ghost res-pnt target-addr addr )
1702: >tempdp drop over
1703: dup >magic @ <do:> =
1704: IF doer,
1705: ELSE dodoes,
1706: THEN
1.103 jwilke 1707: tempdp> ; ' (dr) plugin-of doer-resolve
1.54 pazsan 1708:
1709: : (cm) ( -- addr )
1710: T here align H
1.109 jwilke 1711: -1 prim, ; ' (cm) plugin-of colonmark,
1.1 anton 1712:
1.52 jwilke 1713: >TARGET
1.105 jwilke 1714: : compile, ( xt -- )
1.107 jwilke 1715: dup xt>ghost >comp @ EXECUTE ;
1.52 jwilke 1716: >CROSS
1.1 anton 1717:
1.102 jwilke 1718: \ resolve structure
1719:
1720: : >next ; \ link to next field
1721: : >tag cell+ ; \ indecates type of reference: 0: call, 1: address, 2: doer
1722: : >taddr cell+ cell+ ;
1723: : >ghost 3 cells + ;
1724: : >file 4 cells + ;
1725: : >line 5 cells + ;
1726:
1727: : (refered) ( ghost addr tag -- )
1728: \G creates a reference to ghost at address taddr
1.103 jwilke 1729: >space
1730: rot >link linked
1.102 jwilke 1731: ( taddr tag ) ,
1732: ( taddr ) ,
1733: last-header-ghost @ ,
1734: loadfile ,
1735: sourceline# ,
1.103 jwilke 1736: space>
1.102 jwilke 1737: ;
1738:
1.52 jwilke 1739: : refered ( ghost tag -- )
1.53 jwilke 1740: \G creates a resolve structure
1.54 pazsan 1741: T here aligned H swap (refered)
1742: ;
1743:
1744: : killref ( addr ghost -- )
1745: \G kills a forward reference to ghost at position addr
1746: \G this is used to eleminate a :dovar refence after making a DOES>
1747: dup >magic @ <fwd> <> IF 2drop EXIT THEN
1748: swap >r >link
1749: BEGIN dup @ dup ( addr last this )
1750: WHILE dup >taddr @ r@ =
1751: IF @ over !
1752: ELSE nip THEN
1753: REPEAT rdrop 2drop
1.53 jwilke 1754: ;
1.48 anton 1755:
1.52 jwilke 1756: Defer resolve-warning
1.1 anton 1757:
1.52 jwilke 1758: : reswarn-test ( ghost res-struct -- ghost res-struct )
1.78 jwilke 1759: over cr ." Resolving " .ghost dup ." in " >ghost @ .ghost ;
1.1 anton 1760:
1.52 jwilke 1761: : reswarn-forward ( ghost res-struct -- ghost res-struct )
1.78 jwilke 1762: over warnhead .ghost dup ." is referenced in "
1763: >ghost @ .ghost ;
1.1 anton 1764:
1.52 jwilke 1765: \ ' reswarn-test IS resolve-warning
1766:
1.1 anton 1767: \ resolve 14oct92py
1768:
1.54 pazsan 1769: : resolve-loop ( ghost resolve-list tcfa -- )
1770: >r
1771: BEGIN dup WHILE
1772: \ dup >tag @ 2 = IF reswarn-forward THEN
1773: resolve-warning
1774: r@ over >taddr @
1775: 2 pick >tag @
1776: CASE 0 OF colon-resolve ENDOF
1777: 1 OF addr-resolve ENDOF
1778: 2 OF doer-resolve ENDOF
1779: ENDCASE
1780: @ \ next list element
1781: REPEAT 2drop rdrop
1782: ;
1.52 jwilke 1783:
1784: \ : resolve-loop ( ghost tcfa -- ghost tcfa )
1785: \ >r dup >link @
1786: \ BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
1.1 anton 1787:
1788: \ exists 9may93jaw
1789:
1.103 jwilke 1790: : exists ( ghost tcfa -- )
1791: \G print warning and set new target link in ghost
1792: swap exists-warning
1793: >link ! ;
1.52 jwilke 1794:
1.105 jwilke 1795: : colon-resolved ( ghost -- )
1796: >link @ colon, ; \ compile-call
1797:
1798: : prim-resolved ( ghost -- )
1799: >link @ prim, ;
1800:
1.110 jwilke 1801: \ FIXME: not used currently
1.105 jwilke 1802: : does-resolved ( ghost -- )
1803: dup g>body alit, >do:ghost @ g>body colon, ;
1804:
1805: : (is-forward) ( ghost -- )
1806: colonmark, 0 (refered) ; \ compile space for call
1807: ' (is-forward) IS is-forward
1.1 anton 1808:
1809: : resolve ( ghost tcfa -- )
1.54 pazsan 1810: \G resolve referencies to ghost with tcfa
1.103 jwilke 1811: dup taddr>region 0<> IF
1812: 2dup (>regiontype) define-addr-struct addr-xt-ghost
1813:
1814: \ we define new address only if empty
1.105 jwilke 1815: \ this is for not to take over the alias ghost
1816: \ (different ghost, but identical xt)
1.103 jwilke 1817: \ but the very first that really defines it
1818: dup @ 0= IF ! ELSE 2drop THEN
1819: THEN
1820:
1821: \ is ghost resolved?, second resolve means another
1822: \ definition with the same name
1.75 jwilke 1823: over undefined? 0= IF exists EXIT THEN
1.54 pazsan 1824: \ get linked-list
1825: swap >r r@ >link @ swap \ ( list tcfa R: ghost )
1826: \ mark ghost as resolved
1827: dup r@ >link ! <res> r@ >magic !
1.105 jwilke 1828: r@ >comp @ ['] is-forward = IF
1829: ['] prim-resolved r@ >comp ! THEN
1.54 pazsan 1830: \ loop through forward referencies
1831: r> -rot
1832: comp-state @ >r Resolving comp-state !
1833: resolve-loop
1834: r> comp-state !
1835:
1836: ['] noop IS resolve-warning
1.52 jwilke 1837: ;
1.1 anton 1838:
1839: \ gexecute ghost, 01nov92py
1840:
1.103 jwilke 1841: : (gexecute) ( ghost -- )
1.105 jwilke 1842: dup >comp @ EXECUTE ;
1.103 jwilke 1843:
1844: : gexecute ( ghost -- )
1.110 jwilke 1845: dup >magic @ <imm> = IF -1 ABORT" CROSS: gexecute on immediate word" THEN
1.103 jwilke 1846: (gexecute) ;
1.52 jwilke 1847:
1848: : addr, ( ghost -- )
1.105 jwilke 1849: dup forward? IF 1 refered 0 T a, H ELSE >link @ T a, H THEN ;
1.52 jwilke 1850:
1.1 anton 1851: \ .unresolved 11may93jaw
1852:
1853: variable ResolveFlag
1854:
1855: \ ?touched 11may93jaw
1856:
1.52 jwilke 1857: : ?touched ( ghost -- flag ) dup forward? swap >link @
1.1 anton 1858: 0 <> and ;
1859:
1.53 jwilke 1860: : .forwarddefs ( ghost -- )
1.103 jwilke 1861: ." appeared in:"
1862: >link
1863: BEGIN @ dup
1864: WHILE cr 5 spaces
1865: dup >ghost @ .ghost
1866: ." file " dup >file @ ?dup IF count type ELSE ." CON" THEN
1867: ." line " dup >line @ .dec
1868: REPEAT
1869: drop ;
1870:
1871: : ?resolved ( ghost -- )
1872: dup ?touched
1873: IF ResolveFlag on
1874: dup cr .ghost .forwarddefs
1.53 jwilke 1875: ELSE drop
1876: THEN ;
1.1 anton 1877:
1878: : .unresolved ( -- )
1879: ResolveFlag off cr ." Unresolved: "
1.103 jwilke 1880: ghost-list
1.1 anton 1881: BEGIN @ dup
1882: WHILE dup ?resolved
1.10 anton 1883: REPEAT drop ResolveFlag @
1884: IF
1.48 anton 1885: -1 abort" Unresolved words!"
1.10 anton 1886: ELSE
1887: ." Nothing!"
1888: THEN
1889: cr ;
1.1 anton 1890:
1.52 jwilke 1891: : .stats
1892: base @ >r decimal
1893: cr ." named Headers: " headers-named @ .
1894: r> base ! ;
1895:
1.79 jwilke 1896: >MINIMAL
1897:
1898: : .unresolved .unresolved ;
1899:
1.1 anton 1900: >CROSS
1901: \ Header states 12dec92py
1902:
1.102 jwilke 1903: \ : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
1.90 pazsan 1904: bigendian [IF] 0 [ELSE] tcell 1- [THEN] Constant flag+
1905: : flag! ( w -- ) tlast @ flag+ + dup >r T c@ xor r> c! H ;
1.1 anton 1906:
1907: VARIABLE ^imm
1908:
1.105 jwilke 1909: \ !! should be target wordsize specific
1910: $80 constant alias-mask
1911: $40 constant immediate-mask
1912: $20 constant restrict-mask
1913:
1.1 anton 1914: >TARGET
1.105 jwilke 1915: : immediate immediate-mask flag!
1.18 pazsan 1916: ^imm @ @ dup <imm> = IF drop EXIT THEN
1.1 anton 1917: <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
1918: <imm> ^imm @ ! ;
1.105 jwilke 1919: : restrict restrict-mask flag! ;
1.52 jwilke 1920:
1.54 pazsan 1921: : isdoer
1922: \G define a forth word as doer, this makes obviously only sence on
1923: \G forth processors such as the PSC1000
1924: <do:> last-header-ghost @ >magic ! ;
1.1 anton 1925: >CROSS
1926:
1927: \ Target Header Creation 01nov92py
1928:
1.103 jwilke 1929: : ht-lstring, ( addr count -- )
1.102 jwilke 1930: dup T , H bounds ?DO I c@ T c, H LOOP ;
1931:
1.103 jwilke 1932: >TARGET
1933: : name, ( "name" -- ) bl word count ht-lstring, X cfalign ;
1.1 anton 1934: : view, ( -- ) ( dummy ) ;
1.52 jwilke 1935: >CROSS
1.1 anton 1936:
1.25 pazsan 1937: \ Target Document Creation (goes to crossdoc.fd) 05jul95py
1938:
1.55 pazsan 1939: s" ./doc/crossdoc.fd" r/w create-file throw value doc-file-id
1.25 pazsan 1940: \ contains the file-id of the documentation file
1941:
1.40 pazsan 1942: : T-\G ( -- )
1.25 pazsan 1943: source >in @ /string doc-file-id write-line throw
1.40 pazsan 1944: postpone \ ;
1.25 pazsan 1945:
1.39 pazsan 1946: Variable to-doc to-doc on
1.25 pazsan 1947:
1948: : cross-doc-entry ( -- )
1949: to-doc @ tlast @ 0<> and \ not an anonymous (i.e. noname) header
1950: IF
1951: s" " doc-file-id write-line throw
1952: s" make-doc " doc-file-id write-file throw
1.102 jwilke 1953:
1.105 jwilke 1954: Last-Header-Ghost @ >ghostname doc-file-id write-file throw
1.25 pazsan 1955: >in @
1956: [char] ( parse 2drop
1957: [char] ) parse doc-file-id write-file throw
1958: s" )" doc-file-id write-file throw
1959: [char] \ parse 2drop
1.40 pazsan 1960: T-\G
1.25 pazsan 1961: >in !
1.39 pazsan 1962: THEN ;
1.25 pazsan 1963:
1.28 pazsan 1964: \ Target TAGS creation
1965:
1.39 pazsan 1966: s" kernel.TAGS" r/w create-file throw value tag-file-id
1.116 ! pazsan 1967: s" kernel.tags" r/w create-file throw value vi-tag-file-id
1.28 pazsan 1968: \ contains the file-id of the tags file
1969:
1970: Create tag-beg 2 c, 7F c, bl c,
1971: Create tag-end 2 c, bl c, 01 c,
1972: Create tag-bof 1 c, 0C c,
1.116 ! pazsan 1973: Create tag-tab 1 c, 09 c,
1.28 pazsan 1974:
1975: 2variable last-loadfilename 0 0 last-loadfilename 2!
1976:
1977: : put-load-file-name ( -- )
1.77 jwilke 1978: sourcefilename last-loadfilename 2@ d<>
1.28 pazsan 1979: IF
1980: tag-bof count tag-file-id write-line throw
1.31 anton 1981: sourcefilename 2dup
1.28 pazsan 1982: tag-file-id write-file throw
1983: last-loadfilename 2!
1984: s" ,0" tag-file-id write-line throw
1985: THEN ;
1986:
1.116 ! pazsan 1987: : cross-gnu-tag-entry ( -- )
1.28 pazsan 1988: tlast @ 0<> \ not an anonymous (i.e. noname) header
1989: IF
1990: put-load-file-name
1991: source >in @ min tag-file-id write-file throw
1992: tag-beg count tag-file-id write-file throw
1.116 ! pazsan 1993: Last-Header-Ghost @ >ghostname tag-file-id write-file throw
1.28 pazsan 1994: tag-end count tag-file-id write-file throw
1.31 anton 1995: base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw
1.28 pazsan 1996: \ >in @ 0 <# #s [char] , hold #> tag-file-id write-line throw
1997: s" ,0" tag-file-id write-line throw
1998: base !
1999: THEN ;
1.116 ! pazsan 2000:
! 2001: : cross-vi-tag-entry ( -- )
! 2002: tlast @ 0<> \ not an anonymous (i.e. noname) header
! 2003: IF
! 2004: sourcefilename vi-tag-file-id write-file throw
! 2005: tag-tab count vi-tag-file-id write-file throw
! 2006: Last-Header-Ghost @ >ghostname vi-tag-file-id write-file throw
! 2007: tag-tab count vi-tag-file-id write-file throw
! 2008: s" /^" vi-tag-file-id write-file throw
! 2009: source vi-tag-file-id write-file throw
! 2010: s" $/" vi-tag-file-id write-line throw
! 2011: THEN ;
! 2012:
! 2013: : cross-tag-entry ( -- )
! 2014: cross-gnu-tag-entry
! 2015: cross-vi-tag-entry ;
1.28 pazsan 2016:
1.43 pazsan 2017: \ Check for words
2018:
2019: Defer skip? ' false IS skip?
2020:
1.103 jwilke 2021: : skipdef ( "name" -- )
1.79 jwilke 2022: \G skip definition of an undefined word in undef-words and
2023: \G all-words mode
1.103 jwilke 2024: Ghost dup forward?
1.75 jwilke 2025: IF >magic <skip> swap !
2026: ELSE drop THEN ;
2027:
1.103 jwilke 2028: : tdefined? ( "name" -- flag )
2029: Ghost undefined? 0= ;
1.75 jwilke 2030:
1.103 jwilke 2031: : defined2? ( "name" -- flag )
1.75 jwilke 2032: \G return true for anything else than forward, even for <skip>
2033: \G that's what we want
1.103 jwilke 2034: Ghost forward? 0= ;
1.43 pazsan 2035:
1.103 jwilke 2036: : forced? ( "name" -- flag )
1.79 jwilke 2037: \G return ture if it is a foreced skip with defskip
1.103 jwilke 2038: Ghost >magic @ <skip> = ;
1.79 jwilke 2039:
1.43 pazsan 2040: : needed? ( -- flag ) \ name
1.48 anton 2041: \G returns a false flag when
2042: \G a word is not defined
2043: \G a forward reference exists
2044: \G so the definition is not skipped!
2045: bl word gfind
1.75 jwilke 2046: IF dup undefined?
1.48 anton 2047: nip
2048: 0=
2049: ELSE drop true THEN ;
1.43 pazsan 2050:
1.44 pazsan 2051: : doer? ( -- flag ) \ name
1.103 jwilke 2052: Ghost >magic @ <do:> = ;
1.44 pazsan 2053:
1.43 pazsan 2054: : skip-defs ( -- )
2055: BEGIN refill WHILE source -trailing nip 0= UNTIL THEN ;
2056:
1.28 pazsan 2057: \ Target header creation
2058:
1.54 pazsan 2059: Variable NoHeaderFlag
2060: NoHeaderFlag off
1.1 anton 2061:
1.54 pazsan 2062: : 0.r ( n1 n2 -- )
2063: base @ >r hex
2064: 0 swap <# 0 ?DO # LOOP #> type
2065: r> base ! ;
1.84 jwilke 2066:
2067: : .sym ( adr len -- )
2068: \G escapes / and \ to produce sed output
1.52 jwilke 2069: bounds
2070: DO I c@ dup
1.77 jwilke 2071: CASE [char] / OF drop ." \/" ENDOF
2072: [char] \ OF drop ." \\" ENDOF
1.52 jwilke 2073: dup OF emit ENDOF
2074: ENDCASE
1.54 pazsan 2075: LOOP ;
1.52 jwilke 2076:
1.103 jwilke 2077: Defer setup-execution-semantics
2078: 0 Value lastghost
2079:
2080: : (THeader ( "name" -- ghost )
1.54 pazsan 2081: \ >in @ bl word count type 2 spaces >in !
2082: \ wordheaders will always be compiled to rom
2083: switchrom
2084: \ build header in target
2085: NoHeaderFlag @
2086: IF NoHeaderFlag off
2087: ELSE
2088: T align H view,
1.78 jwilke 2089: tlast @ dup 0> IF tcell - THEN T A, H there tlast !
1.54 pazsan 2090: 1 headers-named +! \ Statistic
2091: >in @ T name, H >in !
2092: THEN
2093: T cfalign here H tlastcfa !
1.84 jwilke 2094: \ Old Symbol table sed-script
1.54 pazsan 2095: \ >in @ cr ." sym:s/CFA=" there 4 0.r ." /" bl word count .sym ." /g" cr >in !
1.103 jwilke 2096: HeaderGhost
1.84 jwilke 2097: \ output symbol table to extra file
2098: [ [IFDEF] fd-symbol-table ]
2099: base @ hex there s>d <# 8 0 DO # LOOP #> fd-symbol-table write-file throw base !
2100: s" :" fd-symbol-table write-file throw
2101: dup >ghostname fd-symbol-table write-line throw
2102: [ [THEN] ]
1.103 jwilke 2103: dup Last-Header-Ghost ! dup to lastghost
1.54 pazsan 2104: dup >magic ^imm ! \ a pointer for immediate
1.105 jwilke 2105: alias-mask flag!
1.103 jwilke 2106: cross-doc-entry cross-tag-entry
2107: setup-execution-semantics
2108: ;
1.1 anton 2109:
1.52 jwilke 2110: \ this is the resolver information from ":"
2111: \ resolving is done by ";"
1.103 jwilke 2112: Variable ;Resolve 1 cells allot
2113:
2114: : hereresolve ( ghost -- )
2115: there resolve 0 ;Resolve ! ;
1.1 anton 2116:
1.11 pazsan 2117: : Theader ( "name" -- ghost )
1.103 jwilke 2118: (THeader dup hereresolve ;
2119:
2120: Variable aprim-nr -20 aprim-nr !
2121:
2122: : copy-execution-semantics ( ghost-from ghost-dest -- )
2123: >r
2124: dup >exec @ r@ >exec !
2125: dup >exec2 @ r@ >exec2 !
2126: dup >exec-compile @ r@ >exec-compile !
2127: dup >ghost-xt @ r@ >ghost-xt !
2128: dup >created @ r@ >created !
2129: rdrop drop ;
1.1 anton 2130:
2131: >TARGET
1.103 jwilke 2132:
1.1 anton 2133: : Alias ( cfa -- ) \ name
1.103 jwilke 2134: >in @ skip? IF 2drop EXIT THEN >in !
2135: (THeader ( S xt ghost )
1.105 jwilke 2136: 2dup swap xt>ghost swap copy-execution-semantics
2137: over resolve T A, H alias-mask flag! ;
1.103 jwilke 2138:
2139: Variable last-prim-ghost
2140: 0 last-prim-ghost !
2141:
2142: : asmprimname, ( ghost -- : name )
2143: dup last-prim-ghost !
2144: >r
2145: here bl word count string, r@ >asm-name !
2146: aprim-nr @ r> >asm-dummyaddr ! ;
2147:
2148: Defer setup-prim-semantics
2149:
1.112 jwilke 2150: : mapprim ( "forthname" "asmlabel" -- )
1.103 jwilke 2151: THeader -1 aprim-nr +! aprim-nr @ T A, H
2152: asmprimname,
2153: setup-prim-semantics ;
2154:
1.112 jwilke 2155: : mapprim: ( "forthname" "asmlabel" -- )
1.103 jwilke 2156: -1 aprim-nr +! aprim-nr @
2157: Ghost tuck swap resolve <do:> swap tuck >magic !
2158: asmprimname, ;
2159:
1.42 pazsan 2160: : Alias: ( cfa -- ) \ name
1.103 jwilke 2161: >in @ skip? IF 2drop EXIT THEN >in !
2162: dup 0< s" prims" T $has? H 0= and
2163: IF
2164: .sourcepos ." needs doer: " >in @ bl word count type >in ! cr
2165: THEN
2166: Ghost tuck swap resolve <do:> swap >magic ! ;
1.64 pazsan 2167:
2168: Variable prim#
2169: : first-primitive ( n -- ) prim# ! ;
2170: : Primitive ( -- ) \ name
1.103 jwilke 2171: >in @ skip? IF 2drop EXIT THEN >in !
2172: dup 0< s" prims" T $has? H 0= and
2173: IF
2174: .sourcepos ." needs prim: " >in @ bl word count type >in ! cr
2175: THEN
2176: prim# @ (THeader ( S xt ghost )
1.105 jwilke 2177: dup >ghost-flags <primitive> set-flag
2178: over resolve T A, H alias-mask flag!
1.103 jwilke 2179: -1 prim# +! ;
1.1 anton 2180: >CROSS
2181:
2182: \ Conditionals and Comments 11may93jaw
2183:
1.103 jwilke 2184: \G saves the existing cond action, this is used for redefining in
2185: \G instant
2186: Variable cond-xt-old
2187:
2188: : cond-target ( -- )
2189: \G Compiles semantic of redefined cond into new one
2190: cond-xt-old @ compile, ; immediate restrict
2191:
1.1 anton 2192: : ;Cond
2193: postpone ;
2194: swap ! ; immediate
2195:
1.103 jwilke 2196: : Cond: ( "name" -- )
2197: \g defines a conditional or another word that must
2198: \g be executed directly while compiling
2199: \g these words have no interpretative semantics by default
2200: Ghost
2201: >exec-compile
2202: dup @ cond-xt-old !
1.1 anton 2203: :NONAME ;
2204:
2205:
2206: : Comment ( -- )
1.103 jwilke 2207: >in @ Ghost swap >in ! ' swap
2208: 2dup >exec-compile ! >exec ! ;
1.1 anton 2209:
2210: Comment ( Comment \
2211:
2212: \ compile 10may93jaw
2213:
1.103 jwilke 2214: : compile ( "name" -- ) \ name
1.115 jwilke 2215: findghost
1.103 jwilke 2216: dup >exec-compile @ ?dup
2217: IF nip compile,
2218: ELSE postpone literal postpone gexecute THEN ; immediate restrict
2219:
1.52 jwilke 2220: >TARGET
2221:
1.105 jwilke 2222: : ' ( -- xt )
2223: \G returns the target-cfa of a ghost
1.52 jwilke 2224: bl word gfind 0= ABORT" CROSS: Ghost don't exists"
1.105 jwilke 2225: g>xt ;
1.52 jwilke 2226:
1.103 jwilke 2227: \ FIXME: this works for the current use cases, but is not
2228: \ in all cases correct ;-)
2229: : comp' X ' 0 ;
2230:
1.52 jwilke 2231: Cond: ['] T ' H alit, ;Cond
2232:
2233: >CROSS
2234:
2235: : [T']
2236: \ returns the target-cfa of a ghost, or compiles it as literal
1.115 jwilke 2237: postpone [G']
2238: state @ IF postpone g>xt ELSE g>xt THEN ; immediate
1.42 pazsan 2239:
1.52 jwilke 2240: \ \ threading modell 13dec92py
2241: \ modularized 14jun97jaw
2242:
1.106 jwilke 2243: T 2 cells H Value xt>body
1.52 jwilke 2244:
1.103 jwilke 2245: : (>body) ( cfa -- pfa )
1.105 jwilke 2246: xt>body + ; ' (>body) plugin-of t>body
2247:
2248: : fillcfa ( usedcells -- )
1.106 jwilke 2249: T cells H xt>body swap -
1.105 jwilke 2250: assert1( dup 0 >= )
2251: 0 ?DO 0 X c, tchar +LOOP ;
1.52 jwilke 2252:
1.103 jwilke 2253: : (doer,) ( ghost -- )
1.105 jwilke 2254: addr, 1 fillcfa ; ' (doer,) plugin-of doer,
1.52 jwilke 2255:
1.105 jwilke 2256: : (docol,) ( -- ) [G'] :docol (doer,) ; ' (docol,) plugin-of docol,
1.52 jwilke 2257:
2258: : (doprim,) ( -- )
1.105 jwilke 2259: there xt>body + ca>native T a, H 1 fillcfa ; ' (doprim,) plugin-of doprim,
1.52 jwilke 2260:
2261: : (doeshandler,) ( -- )
1.105 jwilke 2262: T cfalign H compile :doesjump T 0 , H ; ' (doeshandler,) plugin-of doeshandler,
1.52 jwilke 2263:
2264: : (dodoes,) ( does-action-ghost -- )
2265: ]comp [G'] :dodoes gexecute comp[
2266: addr,
1.103 jwilke 2267: \ the relocator in the c engine, does not like the
2268: \ does-address to marked for relocation
2269: [ T e? ec H 0= [IF] ] T here H tcell - reloff [ [THEN] ]
1.105 jwilke 2270: 2 fillcfa ; ' (dodoes,) plugin-of dodoes,
1.52 jwilke 2271:
1.107 jwilke 2272: : (dlit,) ( n -- ) compile lit td, ; ' (dlit,) plugin-of dlit,
2273:
2274: : (lit,) ( n -- ) s>d dlit, ; ' (lit,) plugin-of lit,
1.52 jwilke 2275:
1.67 jwilke 2276: \ if we dont produce relocatable code alit, defaults to lit, jaw
1.84 jwilke 2277: \ this is just for convenience, so we don't have to define alit,
2278: \ seperately for embedded systems....
2279: T has? relocate H
1.67 jwilke 2280: [IF]
1.105 jwilke 2281: : (alit,) ( n -- ) compile lit T a, H ; ' (alit,) plugin-of alit,
1.67 jwilke 2282: [ELSE]
1.105 jwilke 2283: : (alit,) ( n -- ) lit, ; ' (alit,) plugin-of alit,
1.67 jwilke 2284: [THEN]
1.52 jwilke 2285:
1.105 jwilke 2286: : (fini,) compile ;s ; ' (fini,) plugin-of fini,
1.42 pazsan 2287:
1.43 pazsan 2288: [IFUNDEF] (code)
2289: Defer (code)
2290: Defer (end-code)
2291: [THEN]
2292:
1.1 anton 2293: >TARGET
1.43 pazsan 2294: : Code
1.52 jwilke 2295: defempty?
1.48 anton 2296: (THeader there resolve
1.53 jwilke 2297: [ T e? prims H 0= [IF] T e? ITC H [ELSE] true [THEN] ] [IF]
1.52 jwilke 2298: doprim,
1.48 anton 2299: [THEN]
2300: depth (code) ;
1.43 pazsan 2301:
2302: : Code:
1.52 jwilke 2303: defempty?
1.103 jwilke 2304: Ghost dup there ca>native resolve <do:> swap >magic !
1.43 pazsan 2305: depth (code) ;
2306:
2307: : end-code
1.52 jwilke 2308: (end-code)
1.43 pazsan 2309: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
2310: ELSE true ABORT" CROSS: Stack empty" THEN
1.52 jwilke 2311: ;
1.14 anton 2312:
1.1 anton 2313: >CROSS
1.52 jwilke 2314:
1.1 anton 2315: \ tLiteral 12dec92py
2316:
2317: >TARGET
1.40 pazsan 2318: Cond: \G T-\G ;Cond
2319:
1.105 jwilke 2320: Cond: Literal ( n -- ) lit, ;Cond
1.103 jwilke 2321: Cond: ALiteral ( n -- ) alit, ;Cond
1.1 anton 2322:
2323: : Char ( "<char>" -- ) bl word char+ c@ ;
1.103 jwilke 2324: Cond: [Char] ( "<char>" -- ) Char lit, ;Cond
2325:
1.104 jwilke 2326: tchar 1 = [IF]
1.110 jwilke 2327: Cond: chars ;Cond
1.104 jwilke 2328: [THEN]
1.1 anton 2329:
1.43 pazsan 2330: \ some special literals 27jan97jaw
2331:
1.52 jwilke 2332: \ !! Known Bug: Special Literals and plug-ins work only correct
1.102 jwilke 2333: \ on 16 and 32 Bit Targets and 32 Bit Hosts!
1.52 jwilke 2334:
1.107 jwilke 2335: \ This section could be done with dlit, now. But first I need
2336: \ some test code JAW
2337:
1.43 pazsan 2338: Cond: MAXU
1.102 jwilke 2339: tcell 1 cells u>
2340: IF compile lit tcell 0 ?DO FF T c, H LOOP
2341: ELSE ffffffff lit, THEN
1.52 jwilke 2342: ;Cond
1.43 pazsan 2343:
2344: Cond: MINI
1.102 jwilke 2345: tcell 1 cells u>
2346: IF compile lit bigendian
2347: IF 80 T c, H tcell 1 ?DO 0 T c, H LOOP
2348: ELSE tcell 1 ?DO 0 T c, H LOOP 80 T c, H
2349: THEN
2350: ELSE tcell 2 = IF 8000 ELSE 80000000 THEN lit, THEN
1.52 jwilke 2351: ;Cond
1.43 pazsan 2352:
2353: Cond: MAXI
1.102 jwilke 2354: tcell 1 cells u>
2355: IF compile lit bigendian
2356: IF 7F T c, H tcell 1 ?DO FF T c, H LOOP
2357: ELSE tcell 1 ?DO FF T c, H LOOP 7F T c, H
2358: THEN
2359: ELSE tcell 2 = IF 7fff ELSE 7fffffff THEN lit, THEN
1.43 pazsan 2360: ;Cond
2361:
1.1 anton 2362: >CROSS
1.115 jwilke 2363:
1.1 anton 2364: \ Target compiling loop 12dec92py
2365: \ ">tib trick thrown out 10may93jaw
2366: \ number? defined at the top 11may93jaw
1.77 jwilke 2367: \ replaced >in by save-input
2368:
2369: : discard 0 ?DO drop LOOP ;
1.1 anton 2370:
2371: \ compiled word might leave items on stack!
1.77 jwilke 2372: : tcom ( x1 .. xn n name -- )
2373: \ dup count type space
1.103 jwilke 2374: gfind
2375: IF >r ( discard saved input state ) discard r>
2376: dup >exec-compile @ ?dup
2377: IF nip execute-exec-compile ELSE gexecute THEN
1.77 jwilke 2378: EXIT
2379: THEN
2380: number? dup
2381: IF 0> IF swap lit, THEN lit, discard
1.103 jwilke 2382: ELSE 2drop restore-input throw Ghost gexecute THEN ;
1.1 anton 2383:
2384: \ : ; DOES> 13dec92py
2385: \ ] 9may93py/jaw
2386:
1.115 jwilke 2387: >CROSS
2388:
1.105 jwilke 2389: : compiling-state ( -- )
2390: \G set states to compililng
1.54 pazsan 2391: Compiling comp-state !
1.103 jwilke 2392: \ if we have a state in target, change it with the compile state
1.105 jwilke 2393: [G'] state dup undefined? 0=
2394: IF >ghost-xt @ execute X on ELSE drop THEN ;
2395:
2396: : interpreting-state ( -- )
2397: \G set states to interpreting
2398: \ if target has a state variable, change it according to our state
2399: [G'] state dup undefined? 0=
2400: IF >ghost-xt @ execute X off ELSE drop THEN
2401: Interpreting comp-state ! ;
1.115 jwilke 2402:
2403: >TARGET
1.105 jwilke 2404:
2405: : ]
2406: compiling-state
1.1 anton 2407: BEGIN
1.77 jwilke 2408: BEGIN save-input bl word
2409: dup c@ 0= WHILE drop discard refill 0=
1.1 anton 2410: ABORT" CROSS: End of file while target compiling"
2411: REPEAT
2412: tcom
1.103 jwilke 2413: compiling? 0=
1.1 anton 2414: UNTIL ;
2415:
2416: \ by the way: defining a second interpreter (a compiler-)loop
2417: \ is not allowed if a system should be ans conform
2418:
1.110 jwilke 2419: : (:) ( ghost -- )
2420: \ common factor of : and :noname. Prepare ;Resolve and start definition
2421: ;Resolve ! there ;Resolve cell+ !
2422: docol, ]comp colon-start depth T ] H ;
2423:
1.1 anton 2424: : : ( -- colon-sys ) \ Name
1.52 jwilke 2425: defempty?
2426: constflag off \ don't let this flag work over colon defs
2427: \ just to go sure nothing unwanted happens
1.43 pazsan 2428: >in @ skip? IF drop skip-defs EXIT THEN >in !
1.110 jwilke 2429: (THeader (:) ;
1.1 anton 2430:
1.37 pazsan 2431: : :noname ( -- colon-sys )
1.110 jwilke 2432: X cfalign there
2433: \ define a nameless ghost
2434: here ghostheader dup last-header-ghost ! dup to lastghost
2435: (:) ;
1.37 pazsan 2436:
1.103 jwilke 2437: Cond: EXIT ( -- ) compile ;S ;Cond
1.6 anton 2438:
2439: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
1.2 pazsan 2440:
1.52 jwilke 2441: >CROSS
2442: : LastXT ;Resolve @ 0= abort" CROSS: no definition for LastXT"
2443: ;Resolve cell+ @ ;
2444:
2445: >TARGET
2446:
1.103 jwilke 2447: Cond: recurse ( -- ) Last-Header-Ghost @ gexecute ;Cond
1.52 jwilke 2448:
1.103 jwilke 2449: Cond: ; ( -- )
1.105 jwilke 2450: depth ?dup
2451: IF 1- <> ABORT" CROSS: Stack changed"
2452: ELSE true ABORT" CROSS: Stack empty"
2453: THEN
2454: colon-end
2455: fini,
2456: comp[
2457: ;Resolve @
2458: IF ;Resolve @ ;Resolve cell+ @ resolve
2459: ['] colon-resolved ;Resolve @ >comp !
2460: THEN
2461: interpreting-state
2462: ;Cond
2463:
2464: Cond: [ ( -- ) interpreting-state ;Cond
1.1 anton 2465:
2466: >CROSS
1.54 pazsan 2467:
2468: Create GhostDummy ghostheader
2469: <res> GhostDummy >magic !
2470:
1.52 jwilke 2471: : !does ( does-action -- )
2472: \ !! zusammenziehen und dodoes, machen!
1.54 pazsan 2473: tlastcfa @ [G'] :dovar killref
2474: \ tlastcfa @ dup there >r tdp ! compile :dodoes r> tdp ! T cell+ ! H ;
1.52 jwilke 2475: \ !! geht so nicht, da dodoes, ghost will!
1.54 pazsan 2476: GhostDummy >link ! GhostDummy
2477: tlastcfa @ >tempdp dodoes, tempdp> ;
1.1 anton 2478:
1.103 jwilke 2479:
2480: Defer instant-interpret-does>-hook
2481:
2482: : resolve-does>-part ( -- )
2483: \ resolve words made by builders
1.105 jwilke 2484: Last-Header-Ghost @ >do:ghost @ ?dup
2485: IF there resolve
2486: \ TODO: set special DOES> resolver action here
2487: THEN ;
1.103 jwilke 2488:
1.1 anton 2489: >TARGET
1.103 jwilke 2490: Cond: DOES>
2491: compile (does>) doeshandler,
2492: resolve-does>-part
1.1 anton 2493: ;Cond
1.103 jwilke 2494:
2495: : DOES> switchrom doeshandler, T here H !does
2496: instant-interpret-does>-hook
2497: depth T ] H ;
1.1 anton 2498:
2499: >CROSS
1.108 jwilke 2500: \ Creation 01nov92py
1.1 anton 2501:
2502: \ Builder 11may93jaw
2503:
1.108 jwilke 2504: 0 Value built
2505:
1.105 jwilke 2506: : Builder ( Create-xt do-ghost "name" -- )
1.52 jwilke 2507: \ builds up a builder in current vocabulary
2508: \ create-xt is executed when word is interpreted
1.106 jwilke 2509: \ do:-xt is executed when the created word from builder is executed
1.105 jwilke 2510: \ for do:-xt an additional entry after the normal ghost-entrys is used
1.52 jwilke 2511:
1.109 jwilke 2512: ghost to built
1.108 jwilke 2513: built >created @ 0= IF
2514: built >created on
2515: ['] prim-resolved built >comp !
2516: THEN ;
1.1 anton 2517:
1.52 jwilke 2518: : gdoes, ( ghost -- )
2519: \ makes the codefield for a word that is built
1.103 jwilke 2520: >do:ghost @ dup undefined? 0=
1.52 jwilke 2521: IF
1.42 pazsan 2522: dup >magic @ <do:> =
1.54 pazsan 2523: IF doer,
2524: ELSE dodoes,
2525: THEN
2526: EXIT
1.52 jwilke 2527: THEN
2528: \ compile :dodoes gexecute
2529: \ T here H tcell - reloff
1.54 pazsan 2530: 2 refered
2531: 0 fillcfa
2532: ;
1.1 anton 2533:
1.103 jwilke 2534: : takeover-x-semantics ( S constructor-ghost new-ghost -- )
1.105 jwilke 2535: \g stores execution semantic and compilation semantic in the built word
2536: swap >do:ghost @
1.110 jwilke 2537: \ we use the >exec2 field for the semantic of a created word,
2538: \ using exec or exec2 makes no difference for normal cross-compilation
2539: \ but is usefull for instant where the exec field is already
2540: \ defined (e.g. Vocabularies)
1.105 jwilke 2541: 2dup >exec @ swap >exec2 !
2542: >comp @ swap >comp ! ;
1.103 jwilke 2543:
1.52 jwilke 2544: : TCreate ( <name> -- )
2545: create-forward-warn
2546: IF ['] reswarn-forward IS resolve-warning THEN
1.103 jwilke 2547: executed-ghost @ (Theader
2548: dup >created on
2549: 2dup takeover-x-semantics hereresolve gdoes, ;
1.52 jwilke 2550:
2551: : RTCreate ( <name> -- )
2552: \ creates a new word with code-field in ram
2553: create-forward-warn
2554: IF ['] reswarn-forward IS resolve-warning THEN
2555: \ make Alias
1.103 jwilke 2556: executed-ghost @ (THeader
2557: dup >created on
2558: 2dup takeover-x-semantics
1.105 jwilke 2559: there 0 T a, H alias-mask flag!
1.103 jwilke 2560: \ store poiter to code-field
1.52 jwilke 2561: switchram T cfalign H
2562: there swap T ! H
2563: there tlastcfa !
1.103 jwilke 2564: hereresolve gdoes, ;
1.1 anton 2565:
2566: : Build: ( -- [xt] [colon-sys] )
1.52 jwilke 2567: :noname postpone TCreate ;
2568:
2569: : BuildSmart: ( -- [xt] [colon-sys] )
2570: :noname
1.53 jwilke 2571: [ T has? rom H [IF] ]
1.52 jwilke 2572: postpone RTCreate
2573: [ [ELSE] ]
2574: postpone TCreate
2575: [ [THEN] ] ;
1.1 anton 2576:
1.108 jwilke 2577: : ;Build
2578: postpone ; built >exec ! ; immediate
2579:
1.1 anton 2580: : gdoes> ( ghost -- addr flag )
1.110 jwilke 2581: executed-ghost @ g>body ;
1.1 anton 2582:
2583: \ DO: ;DO 11may93jaw
2584:
1.108 jwilke 2585: : do:ghost! ( ghost -- ) built >do:ghost ! ;
2586: : doexec! ( xt -- ) built >do:ghost @ >exec ! ;
2587:
2588: : DO: ( -- [xt] [colon-sys] )
2589: here ghostheader do:ghost!
1.110 jwilke 2590: :noname postpone gdoes> ;
1.1 anton 2591:
1.108 jwilke 2592: : by: ( -- [xt] [colon-sys] ) \ name
2593: Ghost do:ghost!
1.110 jwilke 2594: :noname postpone gdoes> ;
1.42 pazsan 2595:
1.108 jwilke 2596: : ;DO ( [xt] [colon-sys] -- )
2597: postpone ; doexec! ; immediate
1.1 anton 2598:
1.109 jwilke 2599: : by ( -- ) \ Name
1.108 jwilke 2600: Ghost >do:ghost @ do:ghost! ;
1.107 jwilke 2601:
1.109 jwilke 2602: : compile: ( --[xt] [colon-sys] )
1.107 jwilke 2603: \G defines a compile time action for created words
2604: \G by this builder
2605: :noname ;
2606:
1.109 jwilke 2607: : ;compile ( [xt] [colon-sys] -- )
2608: postpone ; built >do:ghost @ >comp ! ; immediate
1.107 jwilke 2609:
1.1 anton 2610: \ Variables and Constants 05dec92py
2611:
1.108 jwilke 2612: Builder (Constant)
2613: Build: ( n -- ) ;Build
1.103 jwilke 2614: by: :docon ( target-body-addr -- n ) T @ H ;DO
1.52 jwilke 2615:
1.108 jwilke 2616: Builder Constant
2617: Build: ( n -- ) T , H ;Build
1.52 jwilke 2618: by (Constant)
2619:
1.108 jwilke 2620: Builder AConstant
2621: Build: ( n -- ) T A, H ;Build
1.52 jwilke 2622: by (Constant)
2623:
1.108 jwilke 2624: Builder 2Constant
2625: Build: ( d -- ) T , , H ;Build
1.52 jwilke 2626: DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO
2627:
1.108 jwilke 2628: Builder Create
2629: BuildSmart: ;Build
1.103 jwilke 2630: by: :dovar ( target-body-addr -- addr ) ;DO
1.1 anton 2631:
1.108 jwilke 2632: Builder Variable
1.53 jwilke 2633: T has? rom H [IF]
1.108 jwilke 2634: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 , H ( switchrom ) ;Build
1.52 jwilke 2635: by (Constant)
2636: [ELSE]
1.108 jwilke 2637: Build: T 0 , H ;Build
1.1 anton 2638: by Create
1.52 jwilke 2639: [THEN]
1.1 anton 2640:
1.108 jwilke 2641: Builder 2Variable
1.53 jwilke 2642: T has? rom H [IF]
1.108 jwilke 2643: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 , 0 , H ( switchrom ) ;Build
1.54 pazsan 2644: by (Constant)
2645: [ELSE]
1.108 jwilke 2646: Build: T 0 , 0 , H ;Build
1.54 pazsan 2647: by Create
2648: [THEN]
2649:
1.108 jwilke 2650: Builder AVariable
1.54 pazsan 2651: T has? rom H [IF]
1.108 jwilke 2652: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 A, H ( switchrom ) ;Build
1.52 jwilke 2653: by (Constant)
2654: [ELSE]
1.108 jwilke 2655: Build: T 0 A, H ;Build
1.1 anton 2656: by Create
1.52 jwilke 2657: [THEN]
1.1 anton 2658:
1.3 pazsan 2659: \ User variables 04may94py
2660:
2661: Variable tup 0 tup !
2662: Variable tudp 0 tudp !
1.78 jwilke 2663:
1.3 pazsan 2664: : u, ( n -- udp )
2665: tup @ tudp @ + T ! H
1.19 pazsan 2666: tudp @ dup T cell+ H tudp ! ;
1.78 jwilke 2667:
1.3 pazsan 2668: : au, ( n -- udp )
2669: tup @ tudp @ + T A! H
1.19 pazsan 2670: tudp @ dup T cell+ H tudp ! ;
1.78 jwilke 2671:
1.108 jwilke 2672: Builder User
2673: Build: 0 u, X , ;Build
1.78 jwilke 2674: by: :douser ( ghost -- up-addr ) X @ tup @ + ;DO
1.1 anton 2675:
1.108 jwilke 2676: Builder 2User
2677: Build: 0 u, X , 0 u, drop ;Build
1.3 pazsan 2678: by User
1.1 anton 2679:
1.108 jwilke 2680: Builder AUser
2681: Build: 0 au, X , ;Build
1.3 pazsan 2682: by User
1.1 anton 2683:
1.108 jwilke 2684: Builder (Value)
2685: Build: ( n -- ) ;Build
2686: by: :docon ( target-body-addr -- n ) T @ H ;DO
2687:
1.1 anton 2688: Builder Value
1.108 jwilke 2689: BuildSmart: T , H ;Build
2690: by (Value)
1.1 anton 2691:
1.32 pazsan 2692: Builder AValue
1.108 jwilke 2693: BuildSmart: T A, H ;Build
2694: by (Value)
1.32 pazsan 2695:
1.103 jwilke 2696: Defer texecute
2697:
1.108 jwilke 2698: Builder Defer
2699: BuildSmart: ( -- ) [T'] noop T A, H ;Build
1.103 jwilke 2700: by: :dodefer ( ghost -- ) X @ texecute ;DO
1.37 pazsan 2701:
1.108 jwilke 2702: Builder interpret/compile:
2703: Build: ( inter comp -- ) swap T immediate A, A, H ;Build
1.37 pazsan 2704: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1.24 pazsan 2705:
2706: \ Sturctures 23feb95py
2707:
2708: : nalign ( addr1 n -- addr2 )
2709: \ addr2 is the aligned version of addr1 wrt the alignment size n
2710: 1- tuck + swap invert and ;
1.109 jwilke 2711:
1.24 pazsan 2712:
1.108 jwilke 2713: Builder (Field)
2714: Build: ;Build
1.44 pazsan 2715: by: :dofield T @ H + ;DO
2716:
1.108 jwilke 2717: Builder Field
1.51 anton 2718: Build: ( align1 offset1 align size "name" -- align2 offset2 )
2719: rot dup T , H ( align1 align size offset1 )
1.108 jwilke 2720: + >r nalign r> ;Build
1.44 pazsan 2721: by (Field)
1.24 pazsan 2722:
1.109 jwilke 2723: >TARGET
1.51 anton 2724: : struct T 1 chars 0 H ;
1.24 pazsan 2725: : end-struct T 2Constant H ;
2726:
1.52 jwilke 2727: : cell% ( n -- size align )
1.51 anton 2728: T 1 cells H dup ;
1.109 jwilke 2729: >CROSS
1.88 pazsan 2730:
1.105 jwilke 2731: \ Input-Methods 01py
1.103 jwilke 2732:
1.108 jwilke 2733: Builder input-method
2734: Build: ( m v -- m' v ) dup T , cell+ H ;Build
1.88 pazsan 2735: DO: abort" Not in cross mode" ;DO
2736:
1.108 jwilke 2737: Builder input-var
2738: Build: ( m v size -- m v' ) over T , H + ;Build
1.88 pazsan 2739: DO: abort" Not in cross mode" ;DO
1.24 pazsan 2740:
1.108 jwilke 2741: \ Peephole optimization 05sep01jaw
2742:
2743: \ this section defines different compilation
2744: \ actions for created words
2745: \ this will help the peephole optimizer
2746: \ I (jaw) took this from bernds lates cross-compiler
2747: \ changes but seperated it from the original
2748: \ Builder words. The final plan is to put this
2749: \ into a seperate file, together with the peephole
2750: \ optimizer for cross
2751:
2752:
2753: T has? peephole H [IF]
2754:
1.109 jwilke 2755: >CROSS
2756: : (callc) compile call T >body a, H ; ' (callc) plugin-of colon,
2757:
2758: \ if we want this, we have to spilt aconstant
2759: \ and constant!!
2760: \ Builder (Constant)
2761: \ compile: g>body X @ lit, ;compile
1.108 jwilke 2762:
2763: Builder (Constant)
1.109 jwilke 2764: compile: g>body alit, compile @ ;compile
1.108 jwilke 2765:
2766: Builder (Value)
2767: compile: g>body alit, compile @ ;compile
2768:
2769: \ this changes also Variable, AVariable and 2Variable
2770: Builder Create
2771: \ compile: g>body alit, ;compile
2772:
2773: Builder User
2774: compile: g>body compile useraddr T @ , H ;compile
2775:
2776: Builder Defer
2777: compile: g>body alit, compile @ compile execute ;compile
1.102 jwilke 2778:
1.108 jwilke 2779: Builder (Field)
2780: compile: g>body T @ H lit, compile + ;compile
1.102 jwilke 2781:
1.108 jwilke 2782: [THEN]
1.103 jwilke 2783:
1.52 jwilke 2784: \ structural conditionals 17dec92py
2785:
2786: >CROSS
1.103 jwilke 2787: : (ncontrols?) ( n -- )
2788: \g We expect n open control structures
2789: depth over u<=
2790: ABORT" CROSS: unstructured, stack underflow"
2791: 0 ?DO I pick 0=
2792: ABORT" CROSS: unstructured"
2793: LOOP ; ' (ncontrols?) plugin-of ncontrols?
2794:
2795: \ : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
2796: \ : sys? ( sys -- sys ) dup 0= ?struc ;
2797:
1.52 jwilke 2798: : >mark ( -- sys ) T here ( dup ." M" hex. ) 0 , H ;
2799:
1.78 jwilke 2800: : branchoffset ( src dest -- ) - tchar / ; \ ?? jaw
1.52 jwilke 2801:
1.78 jwilke 2802: : >resolve ( sys -- )
2803: X here ( dup ." >" hex. ) over branchoffset swap X ! ;
1.52 jwilke 2804:
1.78 jwilke 2805: : <resolve ( sys -- )
2806: X here ( dup ." <" hex. ) branchoffset X , ;
1.52 jwilke 2807:
1.78 jwilke 2808: :noname compile branch X here branchoffset X , ;
1.54 pazsan 2809: IS branch, ( target-addr -- )
1.78 jwilke 2810: :noname compile ?branch X here branchoffset X , ;
1.54 pazsan 2811: IS ?branch, ( target-addr -- )
2812: :noname compile branch T here 0 , H ;
2813: IS branchmark, ( -- branchtoken )
2814: :noname compile ?branch T here 0 , H ;
2815: IS ?branchmark, ( -- branchtoken )
2816: :noname T here 0 , H ;
2817: IS ?domark, ( -- branchtoken )
1.78 jwilke 2818: :noname dup X @ ?struc X here over branchoffset swap X ! ;
1.54 pazsan 2819: IS branchtoresolve, ( branchtoken -- )
1.78 jwilke 2820: :noname branchto, X here ;
1.54 pazsan 2821: IS branchtomark, ( -- target-addr )
1.52 jwilke 2822:
2823: >TARGET
2824:
2825: \ Structural Conditionals 12dec92py
2826:
1.103 jwilke 2827: \ CLEANUP Cond: BUT sys? swap ;Cond
2828: \ CLEANUP Cond: YET sys? dup ;Cond
1.52 jwilke 2829:
2830: >CROSS
2831:
1.78 jwilke 2832: Variable tleavings 0 tleavings !
1.52 jwilke 2833:
1.54 pazsan 2834: : (done) ( addr -- )
2835: tleavings @
2836: BEGIN dup
2837: WHILE
2838: >r dup r@ cell+ @ \ address of branch
2839: u> 0= \ lower than DO?
2840: WHILE
2841: r@ 2 cells + @ \ branch token
2842: branchtoresolve,
2843: r@ @ r> free throw
2844: REPEAT r> THEN
2845: tleavings ! drop ;
2846:
1.53 jwilke 2847: >TARGET
2848:
1.103 jwilke 2849: \ What for? ANS? JAW Cond: DONE ( addr -- ) (done) ;Cond
1.53 jwilke 2850:
2851: >CROSS
1.54 pazsan 2852: : (leave) ( branchtoken -- )
1.53 jwilke 2853: 3 cells allocate throw >r
2854: T here H r@ cell+ !
2855: r@ 2 cells + !
2856: tleavings @ r@ !
2857: r> tleavings ! ;
2858: >TARGET
2859:
1.103 jwilke 2860: : (leave,) ( -- )
2861: branchmark, (leave) ; ' (leave,) plugin-of leave,
2862:
2863: : (?leave,) ( -- )
2864: compile 0= ?branchmark, (leave) ; ' (?leave,) plugin-of ?leave,
2865:
2866: Cond: LEAVE leave, ;Cond
2867: Cond: ?LEAVE ?leave, ;Cond
1.53 jwilke 2868:
1.54 pazsan 2869: >CROSS
2870: \ !!JW ToDo : Move to general tools section
2871:
2872: : to1 ( x1 x2 xn n -- addr )
1.103 jwilke 2873: \G packs n stack elements in am allocated memory region
1.54 pazsan 2874: dup dup 1+ cells allocate throw dup >r swap 1+
2875: 0 DO tuck ! cell+ LOOP
2876: drop r> ;
1.103 jwilke 2877:
1.54 pazsan 2878: : 1to ( addr -- x1 x2 xn )
2879: \G unpacks the elements saved by to1
2880: dup @ swap over cells + swap
2881: 0 DO dup @ swap 1 cells - LOOP
2882: free throw ;
2883:
2884: : loop] branchto, dup <resolve tcell - (done) ;
2885:
2886: : skiploop] ?dup IF branchto, branchtoresolve, THEN ;
2887:
2888: >TARGET
2889:
1.52 jwilke 2890: \ Structural Conditionals 12dec92py
2891:
1.103 jwilke 2892: : (cs-swap) ( x1 x2 -- x2 x1 )
2893: swap ; ' (cs-swap) plugin-of cs-swap
2894:
2895: : (ahead,) branchmark, ; ' (ahead,) plugin-of ahead,
2896:
2897: : (if,) ?branchmark, ; ' (if,) plugin-of if,
2898:
2899: : (then,) branchto, branchtoresolve, ; ' (then,) plugin-of then,
2900:
2901: : (else,) ( ahead ) branchmark,
2902: swap
2903: ( then ) branchto, branchtoresolve, ; ' (else,) plugin-of else,
2904:
2905: : (begin,) branchtomark, ; ' (begin,) plugin-of begin,
2906:
2907: : (while,) ( if ) ?branchmark,
2908: swap ; ' (while,) plugin-of while,
2909:
2910: : (again,) branch, ; ' (again,) plugin-of again,
2911:
2912: : (until,) ?branch, ; ' (until,) plugin-of until,
2913:
2914: : (repeat,) ( again ) branch,
2915: ( then ) branchto, branchtoresolve, ; ' (repeat,) plugin-of repeat,
2916:
2917: : (case,) ( -- n )
2918: 0 ; ' (case,) plugin-of case,
2919:
2920: : (of,) ( n -- x1 n )
2921: 1+ >r
2922: compile over compile =
2923: if, compile drop r> ; ' (of,) plugin-of of,
2924:
2925: : (endof,) ( x1 n -- x2 n )
2926: >r 1 ncontrols? else, r> ; ' (endof,) plugin-of endof,
2927:
2928: : (endcase,) ( x1 .. xn n -- )
2929: compile drop 0 ?DO 1 ncontrols? then, LOOP ; ' (endcase,) plugin-of endcase,
2930:
1.53 jwilke 2931: >TARGET
1.103 jwilke 2932: Cond: AHEAD ahead, ;Cond
2933: Cond: IF if, ;Cond
2934: Cond: THEN 1 ncontrols? then, ;Cond
2935: Cond: ENDIF 1 ncontrols? then, ;Cond
2936: Cond: ELSE 1 ncontrols? else, ;Cond
2937:
2938: Cond: BEGIN begin, ;Cond
2939: Cond: WHILE 1 ncontrols? while, ;Cond
2940: Cond: AGAIN 1 ncontrols? again, ;Cond
2941: Cond: UNTIL 1 ncontrols? until, ;Cond
2942: Cond: REPEAT 2 ncontrols? repeat, ;Cond
2943:
2944: Cond: CASE case, ;Cond
2945: Cond: OF of, ;Cond
2946: Cond: ENDOF endof, ;Cond
2947: Cond: ENDCASE endcase, ;Cond
1.1 anton 2948:
2949: \ Structural Conditionals 12dec92py
2950:
1.103 jwilke 2951: : (do,) ( -- target-addr )
2952: \ ?? i think 0 is too much! jaw
1.54 pazsan 2953: 0 compile (do)
1.103 jwilke 2954: branchtomark, 2 to1 ; ' (do,) plugin-of do,
1.54 pazsan 2955:
1.103 jwilke 2956: \ alternative for if no ?do
2957: \ : (do,)
1.54 pazsan 2958: \ compile 2dup compile = compile IF
2959: \ compile 2drop compile ELSE
2960: \ compile (do) branchtomark, 2 to1 ;
2961:
1.103 jwilke 2962: : (?do,) ( -- target-addr )
1.54 pazsan 2963: 0 compile (?do) ?domark, (leave)
1.103 jwilke 2964: branchtomark, 2 to1 ; ' (?do,) plugin-of ?do,
2965:
2966: : (for,) ( -- target-addr )
2967: compile (for) branchtomark, ; ' (for,) plugin-of for,
2968:
2969: : (loop,) ( target-addr -- )
2970: 1to compile (loop) loop]
2971: compile unloop skiploop] ; ' (loop,) plugin-of loop,
2972:
2973: : (+loop,) ( target-addr -- )
2974: 1to compile (+loop) loop]
2975: compile unloop skiploop] ; ' (+loop,) plugin-of +loop,
2976:
2977: : (next,)
2978: compile (next) loop] compile unloop ; ' (next,) plugin-of next,
2979:
2980: Cond: DO do, ;Cond
2981: Cond: ?DO ?do, ;Cond
2982: Cond: FOR for, ;Cond
2983:
2984: Cond: LOOP 1 ncontrols? loop, ;Cond
2985: Cond: +LOOP 1 ncontrols? +loop, ;Cond
2986: Cond: NEXT 1 ncontrols? next, ;Cond
1.52 jwilke 2987:
1.1 anton 2988: \ String words 23feb93py
2989:
1.103 jwilke 2990: : ," [char] " parse ht-string, X align ;
1.1 anton 2991:
1.103 jwilke 2992: Cond: ." compile (.") T ," H ;Cond
2993: Cond: S" compile (S") T ," H ;Cond
2994: Cond: C" compile (C") T ," H ;Cond
2995: Cond: ABORT" compile (ABORT") T ," H ;Cond
1.1 anton 2996:
2997: Cond: IS T ' >body H compile ALiteral compile ! ;Cond
1.66 pazsan 2998: : IS T >address ' >body ! H ;
1.9 pazsan 2999: Cond: TO T ' >body H compile ALiteral compile ! ;Cond
3000: : TO T ' >body ! H ;
1.1 anton 3001:
1.52 jwilke 3002: Cond: defers T ' >body @ compile, H ;Cond
3003:
1.1 anton 3004: \ LINKED ERR" ENV" 2ENV" 18may93jaw
3005:
3006: \ linked list primitive
1.79 jwilke 3007: : linked X here over X @ X A, swap X ! ;
1.52 jwilke 3008: : chained T linked A, H ;
1.1 anton 3009:
3010: : err" s" ErrLink linked" evaluate T , H
1.103 jwilke 3011: [char] " parse ht-string, X align ;
1.1 anton 3012:
3013: : env" [char] " parse s" EnvLink linked" evaluate
1.103 jwilke 3014: ht-string, X align X , ;
1.1 anton 3015:
3016: : 2env" [char] " parse s" EnvLink linked" evaluate
1.103 jwilke 3017: here >r ht-string, X align X , X ,
1.1 anton 3018: r> dup T c@ H 80 and swap T c! H ;
3019:
3020: \ compile must be last 22feb93py
3021:
1.103 jwilke 3022: Cond: [compile] ( -- ) \ name
3023: \g For immediate words, works even if forward reference
3024: bl word gfind 0= ABORT" CROSS: Can't compile"
3025: (gexecute) ;Cond
3026:
3027: Cond: postpone ( -- ) \ name
3028: bl word gfind 0= ABORT" CROSS: Can't compile"
3029: dup >magic @ <fwd> =
3030: ABORT" CROSS: Can't postpone on forward declaration"
3031: dup >magic @ <imm> =
3032: IF (gexecute)
3033: ELSE compile (compile) addr, THEN ;Cond
1.54 pazsan 3034:
1.77 jwilke 3035: \ save-cross 17mar93py
3036:
3037: hex
3038:
3039: >CROSS
3040: Create magic s" Gforth2x" here over allot swap move
3041:
3042: bigendian 1+ \ strangely, in magic big=0, little=1
3043: tcell 1 = 0 and or
3044: tcell 2 = 2 and or
3045: tcell 4 = 4 and or
3046: tcell 8 = 6 and or
3047: tchar 1 = 00 and or
3048: tchar 2 = 28 and or
3049: tchar 4 = 50 and or
3050: tchar 8 = 78 and or
3051: magic 7 + c!
3052:
3053: : save-cross ( "image-name" "binary-name" -- )
3054: bl parse ." Saving to " 2dup type cr
3055: w/o bin create-file throw >r
1.113 jwilke 3056: s" header" X $has? IF
1.80 anton 3057: s" #! " r@ write-file throw
3058: bl parse r@ write-file throw
3059: s" --image-file" r@ write-file throw
1.77 jwilke 3060: #lf r@ emit-file throw
3061: r@ dup file-position throw drop 8 mod 8 swap ( file-id limit index )
3062: ?do
3063: bl over emit-file throw
3064: loop
3065: drop
3066: magic 8 r@ write-file throw \ write magic
3067: ELSE
3068: bl parse 2drop
3069: THEN
3070: image @ there
3071: r@ write-file throw \ write image
1.113 jwilke 3072: s" relocate" X $has? IF
1.77 jwilke 3073: bit$ @ there 1- tcell>bit rshift 1+
3074: r@ write-file throw \ write tags
3075: THEN
3076: r> close-file throw ;
3077:
3078: : save-region ( addr len -- )
3079: bl parse w/o bin create-file throw >r
3080: swap >image swap r@ write-file throw
3081: r> close-file throw ;
3082:
1.110 jwilke 3083: \ save-asm-region 29aug01jaw
1.103 jwilke 3084:
3085: Variable name-ptr
3086: Create name-buf 200 chars allot
3087: : init-name-buf name-buf name-ptr ! ;
3088: : nb, name-ptr @ c! 1 chars name-ptr +! ;
3089: : $nb, ( adr len -- ) bounds ?DO I c@ nb, LOOP ;
3090: : @nb name-ptr @ name-buf tuck - ;
3091:
3092: \ stores a usefull string representation of the character
3093: \ in the name buffer
3094: : name-char, ( c -- )
3095: dup 'a 'z 1+ within IF nb, EXIT THEN
3096: dup 'A 'Z 1+ within IF $20 + nb, EXIT THEN
3097: dup '0 '9 1+ within IF nb, EXIT THEN
3098: CASE '+ OF s" _PLUS" $nb, ENDOF
3099: '- OF s" _MINUS" $nb, ENDOF
3100: '* OF s" _STAR" $nb, ENDOF
3101: '/ OF s" _SLASH" $nb, ENDOF
3102: '' OF s" _TICK" $nb, ENDOF
3103: '( OF s" _OPAREN" $nb, ENDOF
3104: ') OF s" _CPAREN" $nb, ENDOF
3105: '[ OF s" _OBRACKET" $nb, ENDOF
3106: '] OF s" _CBRACKET" $nb, ENDOF
3107: '! OF s" _STORE" $nb, ENDOF
3108: '@ OF s" _FETCH" $nb, ENDOF
3109: '> OF s" _GREATER" $nb, ENDOF
3110: '< OF s" _LESS" $nb, ENDOF
3111: '= OF s" _EQUAL" $nb, ENDOF
3112: '# OF s" _HASH" $nb, ENDOF
3113: '? OF s" _QUEST" $nb, ENDOF
3114: ': OF s" _COL" $nb, ENDOF
3115: '; OF s" _SEMICOL" $nb, ENDOF
3116: ', OF s" _COMMA" $nb, ENDOF
3117: '. OF s" _DOT" $nb, ENDOF
3118: '" OF s" _DQUOT" $nb, ENDOF
3119: dup
3120: base @ >r hex s>d <# #s 'X hold '_ hold #> $nb, r> base !
3121: ENDCASE ;
3122:
3123: : label-from-ghostname ( ghost -- addr len )
3124: dup >ghostname init-name-buf 'L nb, bounds
3125: ?DO I c@ name-char, LOOP
3126: \ we add the address to a name to make in unique
3127: \ because one name may appear more then once
3128: \ there are names (e.g. boot) that may be reference from other
3129: \ assembler source files, so we declare them as unique
3130: \ and don't add the address suffix
3131: dup >ghost-flags @ <unique> and 0=
3132: IF s" __" $nb, >link @ base @ >r hex 0 <# #s 'L hold #> r> base ! $nb,
3133: ELSE drop
3134: THEN
3135: @nb ;
3136:
1.111 jwilke 3137: \ FIXME why disabled?!
1.103 jwilke 3138: : label-from-ghostnameXX ( ghost -- addr len )
3139: \ same as (label-from-ghostname) but caches generated names
3140: dup >asm-name @ ?dup IF nip count EXIT THEN
3141: \ dup >r (label-from-ghostname) 2dup
3142: align here >r string, align
3143: r> r> >asm-name ! ;
3144:
3145: : primghostdiscover ( xt -- ghost true | xt false )
3146: dup 0= IF false EXIT THEN
3147: >r last-prim-ghost
3148: BEGIN @ dup
3149: WHILE dup >asm-dummyaddr @ r@ =
3150: IF rdrop true EXIT THEN
3151: REPEAT
3152: drop r> false ;
3153:
3154: : gdiscover2 ( xt -- ghost true | xt false )
3155: dup taddr>region 0= IF false EXIT THEN
3156: dup (>regiontype) @ dup 0= IF drop false EXIT THEN
3157: addr-xt-ghost @ dup 0= IF drop false EXIT THEN
3158: nip true ;
3159: \ dup >ghost-name @ IF nip true ELSE drop false THEN ;
3160:
3161: \ generates a label name for the target address
3162: : generate-label-name ( taddr -- addr len )
3163: gdiscover2
3164: IF dup >magic @ <do:> =
3165: IF >asm-name @ count EXIT THEN
3166: label-from-ghostname
3167: ELSE
3168: primghostdiscover
3169: IF >asm-name @ count
3170: ELSE base @ >r hex 0 <# #s 'L hold #> r> base !
3171: THEN
3172: THEN ;
3173:
3174: Variable outfile-fd
3175:
3176: : $out ( adr len -- ) outfile-fd @ write-file throw ;
3177: : nlout newline $out ;
3178: : .ux ( n -- )
3179: base @ hex swap 0 <# #S #> $out base ! ;
3180:
3181: : save-asm-region-part-aligned ( taddr len -- 'taddr 'len )
3182: dup cell/ 0
3183: ?DO nlout s" .word " $out over @relbit
3184: IF over X @ generate-label-name $out
3185: ELSE over X @ s" 0x0" $out .ux
3186: THEN
3187: tcell /string
3188: LOOP ;
3189:
3190: : print-bytes ( taddr len n -- taddr' len' )
3191: over min dup 0>
3192: IF nlout s" .byte " $out 0
3193: ?DO I 0> IF s" , " $out THEN
3194: over X c@ s" 0x0" $out .ux 1 /string
3195: LOOP
3196: THEN ;
3197:
3198: : save-asm-region-part ( addr len -- )
3199: over dup X aligned swap - ?dup
3200: IF print-bytes THEN
3201: save-asm-region-part-aligned
3202: dup dup X aligned swap - ?dup
3203: IF 2 pick @relbit ABORT" relocated field splitted"
3204: print-bytes
3205: THEN
3206: 2drop ;
3207:
3208: : print-label ( taddr -- )
3209: nlout generate-label-name $out s" :" $out ;
3210:
3211: : snl-calc ( taddr taddr2 -- )
3212: tuck over - ;
3213:
3214: : skip-nolables ( taddr -- taddr2 taddr len )
3215: \G skips memory region where no lables are defined
3216: \G starting from taddr+1
3217: \G Labels will be introduced for each reference mark
3218: \G in addr-refs.
3219: \G This word deals with lables at byte addresses as well.
3220: \G The main idea is to have an intro part which
3221: \G skips until the next cell boundary, the middle part
3222: \G which skips whole cells very efficiently and the third
3223: \G part which skips the bytes to the label in a cell
3224: dup 1+ dup (>regiontype)
3225: ( S taddr taddr-realstart type-addr )
3226: dup @ dup IF addr-refs @ THEN
3227: swap >r
3228: over align+ tuck tcell swap - rshift swap 0
3229: DO dup 1 and
3230: IF drop rdrop snl-calc UNLOOP EXIT THEN
3231: 2/ swap 1+ swap
3232: LOOP
3233: drop r> cell+
3234: ( S .. taddr2 type-addr ) dup
3235: BEGIN dup @ dup IF addr-refs @ THEN 0= WHILE cell+ REPEAT
3236: dup >r swap - 1 cells / tcell * + r>
3237: ( S .. taddr2+skiplencells type-addr )
3238: @ addr-refs @ 1 tcell lshift or
3239: BEGIN dup 1 and 0= WHILE swap 1+ swap 2/ REPEAT drop
3240: ( S .. taddr2+skiplencells+skiplenbytes )
3241: snl-calc ;
3242:
3243: : insert-label ( taddr -- )
3244: dup 0= IF drop EXIT THEN
3245: \ ignore everything which points outside our memory regions
3246: \ maybe a primitive pointer or whatever
3247: dup taddr>region 0= IF drop EXIT THEN
3248: dup >r (>regiontype) define-addr-struct addr-refs dup @
3249: r> tcell 1- and 1 swap lshift or swap ! ;
3250:
3251: \ this generates a sorted list of addresses which must be labels
3252: \ it scans therefore a whole region
3253: : generate-label-list-region ( taddr len -- )
3254: BEGIN over @relbit IF over X @ insert-label THEN
3255: tcell /string dup 0<
3256: UNTIL 2drop ;
3257:
3258: : generate-label-list ( -- )
3259: region-link
3260: BEGIN @ dup WHILE
3261: dup 0 >rlink - extent
3262: ?dup IF generate-label-list-region ELSE drop THEN
3263: REPEAT drop ;
3264:
3265: : create-outfile ( addr len -- )
3266: w/o bin create-file throw outfile-fd ! ;
3267:
3268: : close-outfile ( -- )
3269: outfile-fd @ close-file throw ;
3270:
3271: : (save-asm-region) ( region -- )
3272: \ ." label list..."
3273: generate-label-list
3274: \ ." ok!" cr
3275: extent ( S taddr len )
3276: over insert-label
3277: 2dup + dup insert-label >r ( R end-label )
3278: ( S taddr len ) drop
3279: BEGIN
3280: dup print-label
3281: dup r@ <> WHILE
3282: skip-nolables save-asm-region-part
3283: REPEAT drop rdrop ;
3284:
3285: : lineout ( addr len -- )
3286: outfile-fd @ write-line throw ;
3287:
3288: : save-asm-region ( region adr len -- )
3289: create-outfile (save-asm-region) close-outfile ;
3290:
1.54 pazsan 3291: \ \ minimal definitions
3292:
1.77 jwilke 3293: >MINIMAL also minimal
3294:
1.1 anton 3295: \ Usefull words 13feb93py
3296:
3297: : KB 400 * ;
3298:
1.54 pazsan 3299: \ \ [IF] [ELSE] [THEN] ... 14sep97jaw
3300:
3301: \ it is useful to define our own structures and not to rely
1.109 jwilke 3302: \ on the words in the host system
3303: \ The words in the host system might be defined with vocabularies
1.54 pazsan 3304: \ this doesn't work with our self-made compile-loop
3305:
3306: Create parsed 20 chars allot \ store word we parsed
3307:
3308: : upcase
3309: parsed count bounds
3310: ?DO I c@ toupper I c! LOOP ;
3311:
3312: : [ELSE]
3313: 1 BEGIN
3314: BEGIN bl word count dup WHILE
1.77 jwilke 3315: comment? 20 umin parsed place upcase parsed count
1.54 pazsan 3316: 2dup s" [IF]" compare 0= >r
3317: 2dup s" [IFUNDEF]" compare 0= >r
3318: 2dup s" [IFDEF]" compare 0= r> or r> or
3319: IF 2drop 1+
3320: ELSE 2dup s" [ELSE]" compare 0=
3321: IF 2drop 1- dup
3322: IF 1+
3323: THEN
3324: ELSE
3325: 2dup s" [ENDIF]" compare 0= >r
3326: s" [THEN]" compare 0= r> or
3327: IF 1- THEN
3328: THEN
3329: THEN
3330: ?dup 0= ?EXIT
3331: REPEAT
3332: 2drop refill 0=
3333: UNTIL drop ; immediate
3334:
3335: : [THEN] ( -- ) ; immediate
3336:
3337: : [ENDIF] ( -- ) ; immediate
3338:
3339: : [IF] ( flag -- )
3340: 0= IF postpone [ELSE] THEN ; immediate
3341:
3342: Cond: [IF] postpone [IF] ;Cond
3343: Cond: [THEN] postpone [THEN] ;Cond
3344: Cond: [ELSE] postpone [ELSE] ;Cond
3345:
1.1 anton 3346: \ define new [IFDEF] and [IFUNDEF] 20may93jaw
3347:
1.77 jwilke 3348: : defined? tdefined? ;
1.44 pazsan 3349: : needed? needed? ;
3350: : doer? doer? ;
1.1 anton 3351:
1.52 jwilke 3352: \ we want to use IFDEF on compiler directives (e.g. E?) in the source, too
3353:
3354: : directive?
1.77 jwilke 3355: bl word count [ ' target >wordlist ] literal search-wordlist
1.52 jwilke 3356: dup IF nip THEN ;
3357:
3358: : [IFDEF] >in @ directive? swap >in !
1.77 jwilke 3359: 0= IF tdefined? ELSE name 2drop true THEN
1.52 jwilke 3360: postpone [IF] ;
3361:
1.77 jwilke 3362: : [IFUNDEF] tdefined? 0= postpone [IF] ;
1.1 anton 3363:
1.54 pazsan 3364: Cond: [IFDEF] postpone [IFDEF] ;Cond
3365:
3366: Cond: [IFUNDEF] postpone [IFUNDEF] ;Cond
3367:
1.1 anton 3368: \ C: \- \+ Conditional Compiling 09jun93jaw
3369:
1.77 jwilke 3370: : C: >in @ tdefined? 0=
3371: IF >in ! X :
1.1 anton 3372: ELSE drop
3373: BEGIN bl word dup c@
3374: IF count comment? s" ;" compare 0= ?EXIT
3375: ELSE refill 0= ABORT" CROSS: Out of Input while C:"
3376: THEN
3377: AGAIN
3378: THEN ;
3379:
1.74 jwilke 3380: : d? d? ;
3381:
3382: \G doesn't skip line when debug switch is on
3383: : \D D? 0= IF postpone \ THEN ;
1.52 jwilke 3384:
1.48 anton 3385: \G interprets the line if word is not defined
1.77 jwilke 3386: : \- tdefined? IF postpone \ THEN ;
1.48 anton 3387:
3388: \G interprets the line if word is defined
1.77 jwilke 3389: : \+ tdefined? 0= IF postpone \ THEN ;
1.1 anton 3390:
1.48 anton 3391: Cond: \- \- ;Cond
3392: Cond: \+ \+ ;Cond
1.52 jwilke 3393: Cond: \D \D ;Cond
1.48 anton 3394:
3395: : ?? bl word find IF execute ELSE drop 0 THEN ;
3396:
3397: : needed:
3398: \G defines ghost for words that we want to be compiled
1.103 jwilke 3399: BEGIN >in @ bl word c@ WHILE >in ! Ghost drop REPEAT drop ;
1.48 anton 3400:
1.1 anton 3401: \ words that should be in minimal
1.52 jwilke 3402:
3403: create s-buffer 50 chars allot
3404:
1.77 jwilke 3405: bigendian Constant bigendian
1.1 anton 3406:
1.52 jwilke 3407: : here there ;
1.67 jwilke 3408: : equ constant ;
3409: : mark there constant ;
1.54 pazsan 3410:
3411: \ compiler directives
1.52 jwilke 3412: : >ram >ram ;
3413: : >rom >rom ;
3414: : >auto >auto ;
3415: : >tempdp >tempdp ;
3416: : tempdp> tempdp> ;
3417: : const constflag on ;
1.103 jwilke 3418:
3419: : Redefinitions-start
3420: \G Starts a redefinition section. Warnings are disabled and
3421: \G existing ghosts are reused. This is used in the kernel
3422: \G where ( and \ and the like are redefined
3423: twarnings off warnings off reuse-ghosts on ;
3424:
3425: : Redefinitions-end
3426: \G Ends a redefinition section. Warnings are enabled again.
3427: twarnings on warnings on reuse-ghosts off ;
3428:
3429: : warnings name 3 =
3430: IF twarnings off warnings off ELSE twarnings on warnings on THEN drop ;
1.102 jwilke 3431:
1.60 anton 3432: : | ;
3433: \ : | NoHeaderFlag on ; \ This is broken (damages the last word)
1.52 jwilke 3434:
1.48 anton 3435: : save-cross save-cross ;
1.52 jwilke 3436: : save-region save-region ;
3437: : tdump swap >image swap dump ;
3438:
1.48 anton 3439: also forth
1.52 jwilke 3440: [IFDEF] Label : Label defempty? Label ; [THEN]
3441: [IFDEF] start-macros : start-macros defempty? start-macros ; [THEN]
1.77 jwilke 3442: \ [IFDEF] builttag : builttag builttag ; [THEN]
1.48 anton 3443: previous
3444:
1.52 jwilke 3445: : s" [char] " parse s-buffer place s-buffer count ; \ for environment?
1.43 pazsan 3446: : + + ;
1.52 jwilke 3447: : 1+ 1 + ;
3448: : 2+ 2 + ;
1.43 pazsan 3449: : 1- 1- ;
3450: : - - ;
1.52 jwilke 3451: : and and ;
3452: : or or ;
1.43 pazsan 3453: : 2* 2* ;
3454: : * * ;
3455: : / / ;
3456: : dup dup ;
3457: : over over ;
3458: : swap swap ;
3459: : rot rot ;
3460: : drop drop ;
3461: : = = ;
3462: : 0= 0= ;
3463: : lshift lshift ;
3464: : 2/ 2/ ;
1.103 jwilke 3465: \ : . . ;
1.1 anton 3466:
1.79 jwilke 3467: : all-words ['] forced? IS skip? ;
1.43 pazsan 3468: : needed-words ['] needed? IS skip? ;
1.75 jwilke 3469: : undef-words ['] defined2? IS skip? ;
3470: : skipdef skipdef ;
1.1 anton 3471:
1.40 pazsan 3472: : \ postpone \ ; immediate
1.47 pazsan 3473: : \G T-\G ; immediate
1.40 pazsan 3474: : ( postpone ( ; immediate
1.1 anton 3475: : include bl word count included ;
1.103 jwilke 3476: : included swap >image swap included ;
1.52 jwilke 3477: : require require ;
1.103 jwilke 3478: : needs require ;
1.1 anton 3479: : .( [char] ) parse type ;
1.52 jwilke 3480: : ." [char] " parse type ;
1.1 anton 3481: : cr cr ;
3482:
1.77 jwilke 3483: : times 0 ?DO dup X c, LOOP drop ; \ used for space table creation
3484:
3485: \ only forth also cross also minimal definitions order
1.1 anton 3486:
3487: \ cross-compiler words
3488:
1.103 jwilke 3489: : decimal decimal [g'] decimal >exec2 @ ?dup IF EXECUTE THEN ;
3490: : hex hex [g'] hex >exec2 @ ?dup IF EXECUTE THEN ;
1.1 anton 3491:
1.77 jwilke 3492: \ : tudp X tudp ;
3493: \ : tup X tup ;
3494:
3495: : doc-off false to-doc ! ;
3496: : doc-on true to-doc ! ;
1.39 pazsan 3497:
1.103 jwilke 3498: : declareunique ( "name" -- )
3499: \G Sets the unique flag for a ghost. The assembler output
3500: \G generates labels with the ghostname concatenated with the address
3501: \G while cross-compiling. The address is concatenated
3502: \G because we have double occurences of the same name.
3503: \G If we want to reference the labels from the assembler or C
3504: \G code we declare them unique, so the address is skipped.
3505: Ghost >ghost-flags dup @ <unique> or swap ! ;
3506:
3507: \ [IFDEF] dbg : dbg dbg ; [THEN]
1.39 pazsan 3508:
1.1 anton 3509: \ for debugging...
1.103 jwilke 3510: \ : dbg dbg ;
3511: : horder order ;
3512: : hwords words ;
3513: \ : words also ghosts
3514: \ words previous ;
1.105 jwilke 3515: : .s .s ;
1.1 anton 3516: : bye bye ;
1.99 pazsan 3517:
1.103 jwilke 3518: \ dummy
3519: : group 0 word drop ;
3520:
1.1 anton 3521: \ turnkey direction
3522: : H forth ; immediate
3523: : T minimal ; immediate
3524: : G ghosts ; immediate
3525:
3526:
3527: \ these ones are pefered:
3528:
1.74 jwilke 3529: : unlock previous forth also cross ;
1.52 jwilke 3530:
1.77 jwilke 3531: \ also minimal
1.103 jwilke 3532: >cross
3533:
3534: : turnkey
3535: ghosts-wordlist 1 set-order
3536: also target definitions
3537: also Minimal also ;
3538:
3539: >minimal
3540:
3541: : [[+++
3542: turnkey unlock ;
1.1 anton 3543:
3544: unlock definitions also minimal
1.77 jwilke 3545:
1.103 jwilke 3546: : lock turnkey ;
3547:
3548: Defer +++]]-hook
3549: : +++]] +++]]-hook lock ;
3550:
3551: LOCK
1.77 jwilke 3552: \ load cross compiler extension defined in mach file
3553:
3554: UNLOCK >CROSS
3555:
3556: [IFDEF] extend-cross extend-cross [THEN]
3557:
3558: LOCK
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>