1: \ CROSS.FS The Cross-Compiler 06oct92py
2: \ Idea and implementation: Bernd Paysan (py)
3:
4: \ Copyright (C) 1995,1996,1997,1998,1999,2000,2003,2004,2005,2006 Free Software Foundation, Inc.
5:
6: \ This file is part of Gforth.
7:
8: \ Gforth is free software; you can redistribute it and/or
9: \ modify it under the terms of the GNU General Public License
10: \ as published by the Free Software Foundation; either version 2
11: \ of the License, or (at your option) any later version.
12:
13: \ This program is distributed in the hope that it will be useful,
14: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
15: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: \ GNU General Public License for more details.
17:
18: \ You should have received a copy of the GNU General Public License
19: \ along with this program; if not, write to the Free Software
20: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
21:
22: 0
23: [IF]
24:
25: ToDo:
26: - Crossdoc destination ./doc/crossdoc.fd makes no sense when
27: cross.fs is used seperately. jaw
28: - Do we need this char translation with >address and in branchoffset?
29: (>body also affected) jaw
30:
31: [THEN]
32:
33: s" compat/strcomp.fs" included
34:
35: hex
36:
37: \ debugging for compiling
38:
39: \ print stack at each colon definition
40: \ : : save-input cr bl word count type restore-input throw .s : ;
41:
42: \ print stack at each created word
43: \ : create save-input cr bl word count type restore-input throw .s create ;
44:
45:
46: \ \ ------------- Setup Vocabularies
47:
48: \ Remark: Vocabulary is not ANS, but it should work...
49:
50: Vocabulary Cross
51: Vocabulary Target
52: Vocabulary Ghosts
53: Vocabulary Minimal
54: only Forth also Target also also
55: definitions Forth
56:
57: : T previous Ghosts also Target ; immediate
58: : G Ghosts ; immediate
59: : H previous Forth also Cross ; immediate
60:
61: forth definitions
62:
63: : T previous Ghosts also Target ; immediate
64: : G Ghosts ; immediate
65:
66:
67: : >cross also Cross definitions previous ;
68: : >target also Target definitions previous ;
69: : >minimal also Minimal definitions previous ;
70:
71: H
72:
73: >CROSS
74:
75: \ Test against this definitions to find out whether we are cross-compiling
76: \ may be usefull for assemblers
77: 0 Constant gforth-cross-indicator
78:
79: \ find out whether we are compiling with gforth
80:
81: : defined? bl word find nip ;
82: defined? emit-file defined? toupper and \ drop 0
83: [IF]
84: \ use this in a gforth system
85: : \GFORTH ; immediate
86: : \ANSI postpone \ ; immediate
87: [ELSE]
88: : \GFORTH postpone \ ; immediate
89: : \ANSI ; immediate
90: [THEN]
91:
92: \ANSI : [IFUNDEF] defined? 0= postpone [IF] ; immediate
93: \ANSI : [IFDEF] defined? postpone [IF] ; immediate
94: 0 \ANSI drop 1
95: [IF]
96: : \G postpone \ ; immediate
97: : rdrop postpone r> postpone drop ; immediate
98: : name bl word count ;
99: : bounds over + swap ;
100: : scan >r BEGIN dup WHILE over c@ r@ <> WHILE 1 /string REPEAT THEN rdrop ;
101: : linked here over @ , swap ! ;
102: : alias create , DOES> @ EXECUTE ;
103: : defer ['] noop alias ;
104: : is state @
105: IF ' >body postpone literal postpone !
106: ELSE ' >body ! THEN ; immediate
107: : 0>= 0< 0= ;
108: : d<> rot <> -rot <> or ;
109: : toupper dup [char] a [char] z 1+ within IF [char] A [char] a - + THEN ;
110: Variable ebuf
111: : emit-file ( c fd -- ior ) swap ebuf c! ebuf 1 chars rot write-file ;
112: 0a Constant #lf
113: 0d Constant #cr
114:
115: [IFUNDEF] Warnings Variable Warnings [THEN]
116:
117: \ \ Number parsing 23feb93py
118:
119: \ number? number 23feb93py
120:
121: Variable dpl
122:
123: hex
124: Create bases 10 , 2 , A , 100 ,
125: \ 16 2 10 character
126:
127: \ !! protect BASE saving wrapper against exceptions
128: : getbase ( addr u -- addr' u' )
129: over c@ [char] $ - dup 4 u<
130: IF
131: cells bases + @ base ! 1 /string
132: ELSE
133: drop
134: THEN ;
135:
136: : sign? ( addr u -- addr u flag )
137: over c@ [char] - = dup >r
138: IF
139: 1 /string
140: THEN
141: r> ;
142:
143: : s>unumber? ( addr u -- ud flag )
144: over [char] ' =
145: IF \ a ' alone is rather unusual :-)
146: drop char+ c@ 0 true EXIT
147: THEN
148: base @ >r dpl on getbase
149: 0. 2swap
150: BEGIN ( d addr len )
151: dup >r >number dup
152: WHILE \ there are characters left
153: dup r> -
154: WHILE \ the last >number parsed something
155: dup 1- dpl ! over c@ [char] . =
156: WHILE \ the current char is '.'
157: 1 /string
158: REPEAT THEN \ there are unparseable characters left
159: 2drop false
160: ELSE
161: rdrop 2drop true
162: THEN
163: r> base ! ;
164:
165: \ ouch, this is complicated; there must be a simpler way - anton
166: : s>number? ( addr len -- d f )
167: \ converts string addr len into d, flag indicates success
168: sign? >r
169: s>unumber?
170: 0= IF
171: rdrop false
172: ELSE \ no characters left, all ok
173: r>
174: IF
175: dnegate
176: THEN
177: true
178: THEN ;
179:
180: : s>number ( addr len -- d )
181: \ don't use this, there is no way to tell success
182: s>number? drop ;
183:
184: : snumber? ( c-addr u -- 0 / n -1 / d 0> )
185: s>number? 0=
186: IF
187: 2drop false EXIT
188: THEN
189: dpl @ dup 0< IF
190: nip
191: ELSE
192: 1+
193: THEN ;
194:
195: : number? ( string -- string 0 / n -1 / d 0> )
196: dup >r count snumber? dup if
197: rdrop
198: else
199: r> swap
200: then ;
201:
202: : number ( string -- d )
203: number? ?dup 0= abort" ?" 0<
204: IF
205: s>d
206: THEN ;
207:
208: [THEN]
209:
210: \ this provides assert( and struct stuff
211: \GFORTH [IFUNDEF] assert1(
212: \GFORTH also forth definitions require assert.fs previous
213: \GFORTH [THEN]
214:
215: >CROSS
216:
217: hex \ the defualt base for the cross-compiler is hex !!
218: \ Warnings off
219:
220: \ words that are generaly useful
221:
222: : KB 400 * ;
223: : >wordlist ( vocabulary-xt -- wordlist-struct )
224: also execute get-order swap >r 1- set-order r> ;
225:
226: : umax 2dup u< IF swap THEN drop ;
227: : umin 2dup u> IF swap THEN drop ;
228:
229: : string, ( c-addr u -- )
230: \ puts down string as cstring
231: dup c, here swap chars dup allot move ;
232:
233: : ," [char] " parse string, ;
234:
235: : SetValue ( n -- <name> )
236: \G Same behaviour as "Value" if the <name> is not defined
237: \G Same behaviour as "to" if <name> is defined
238: \G SetValue searches in the current vocabulary
239: save-input bl word >r restore-input throw r> count
240: get-current search-wordlist
241: IF drop >r
242: \ we have to set current to be topmost context wordlist
243: get-order get-order get-current swap 1+ set-order
244: r> ['] to execute
245: set-order
246: ELSE Value THEN ;
247:
248: : DefaultValue ( n -- <name> )
249: \G Same behaviour as "Value" if the <name> is not defined
250: \G DefaultValue searches in the current vocabulary
251: save-input bl word >r restore-input throw r> count
252: get-current search-wordlist
253: IF bl word drop 2drop ELSE Value THEN ;
254:
255: hex
256:
257: \ FIXME delete`
258: \ 1 Constant Cross-Flag \ to check whether assembler compiler plug-ins are
259: \ for cross-compiling
260: \ No! we use "[IFUNDEF]" there to find out whether we are target compiling!!!
261:
262: \ FIXME move down
263: : comment? ( c-addr u -- c-addr u )
264: 2dup s" (" str=
265: IF postpone (
266: ELSE 2dup s" \" str= IF postpone \ THEN
267: THEN ;
268:
269: : X ( -- <name> )
270: \G The next word in the input is a target word.
271: \G Equivalent to T <name> but without permanent
272: \G switch to target dictionary. Used as prefix e.g. for @, !, here etc.
273: bl word count [ ' target >wordlist ] Literal search-wordlist
274: IF state @ IF compile, ELSE execute THEN
275: ELSE -1 ABORT" Cross: access method not supported!"
276: THEN ; immediate
277:
278: \ Begin CROSS COMPILER:
279:
280: \ debugging
281:
282: 0 [IF]
283:
284: This implements debugflags for the cross compiler and the compiled
285: images. It works identical to the has-flags in the environment.
286: The debugflags are defined in a vocabluary. If the word exists and
287: its value is true, the flag is switched on.
288:
289: [THEN]
290:
291: >CROSS
292:
293: Vocabulary debugflags \ debug flags for cross
294: also debugflags get-order over
295: Constant debugflags-wl
296: set-order previous
297:
298: : DebugFlag
299: get-current >r debugflags-wl set-current
300: SetValue
301: r> set-current ;
302:
303: : Debug? ( adr u -- flag )
304: \G return true if debug flag is defined or switched on
305: debugflags-wl search-wordlist
306: IF EXECUTE
307: ELSE false THEN ;
308:
309: : D? ( <name> -- flag )
310: \G return true if debug flag is defined or switched on
311: \G while compiling we do not return the current value but
312: bl word count debug? ;
313:
314: : [d?]
315: \G compile the value-xt so the debug flag can be switched
316: \G the flag must exist!
317: bl word count debugflags-wl search-wordlist
318: IF compile,
319: ELSE -1 ABORT" unknown debug flag"
320: \ POSTPONE false
321: THEN ; immediate
322:
323: : symentry ( adr len taddr -- )
324: \G Produce a symbol table (an optional symbol address
325: \G map) if wanted
326: [ [IFDEF] fd-symbol-table ]
327: base @ swap hex s>d <# 8 0 DO # LOOP #> fd-symbol-table write-file throw base !
328: s" :" fd-symbol-table write-file throw
329: fd-symbol-table write-line throw
330: [ [ELSE] ]
331: 2drop drop
332: [ [THEN] ] ;
333:
334:
335: \ \ -------------------- source file
336:
337: decimal
338:
339: Variable cross-file-list
340: 0 cross-file-list !
341: Variable target-file-list
342: 0 target-file-list !
343: Variable host-file-list
344: 0 host-file-list !
345:
346: cross-file-list Value file-list
347: 0 Value source-desc
348:
349: \ file loading
350:
351: : >fl-id 1 cells + ;
352: : >fl-name 2 cells + ;
353:
354: Variable filelist 0 filelist !
355: Create NoFile ," #load-file#"
356:
357: : loadfile ( -- adr )
358: source-desc ?dup IF >fl-name ELSE NoFile THEN ;
359:
360: : sourcefilename ( -- adr len )
361: loadfile count ;
362:
363: \ANSI : sourceline# 0 ;
364:
365: \ \ -------------------- path handling from kernel/paths.fs
366:
367: \ paths.fs path file handling 03may97jaw
368:
369: \ -Changing the search-path:
370: \ fpath+ <path> adds a directory to the searchpath
371: \ fpath= <path>|<path> makes complete now searchpath
372: \ seperator is |
373: \ .fpath displays the search path
374: \ remark I:
375: \ a ./ in the beginning of filename is expanded to the directory the
376: \ current file comes from. ./ can also be included in the search-path!
377: \ ~+/ loads from the current working directory
378:
379: \ remark II:
380: \ if there is no sufficient space for the search path increase it!
381:
382:
383: \ -Creating custom paths:
384:
385: \ It is possible to use the search mechanism on yourself.
386:
387: \ Make a buffer for the path:
388: \ create mypath 100 chars , \ maximum length (is checked)
389: \ 0 , \ real len
390: \ 100 chars allot \ space for path
391: \ use the same functions as above with:
392: \ mypath path+
393: \ mypath path=
394: \ mypath .path
395:
396: \ do a open with the search path:
397: \ open-path-file ( adr len path -- fd adr len ior )
398: \ the file is opened read-only; if the file is not found an error is generated
399:
400: \ questions to: wilke@jwdt.com
401:
402: [IFUNDEF] +place
403: : +place ( adr len adr )
404: 2dup >r >r
405: dup c@ char+ + swap move
406: r> r> dup c@ rot + swap c! ;
407: [THEN]
408:
409: [IFUNDEF] place
410: : place ( c-addr1 u c-addr2 )
411: 2dup c! char+ swap move ;
412: [THEN]
413:
414: \ if we have path handling, use this and the setup of it
415: [IFUNDEF] open-fpath-file
416:
417: create sourcepath 1024 chars , 0 , 1024 chars allot \ !! make this dynamic
418: sourcepath value fpath
419:
420: : also-path ( adr len path^ -- )
421: >r
422: \ len check
423: r@ cell+ @ over + r@ @ u> ABORT" path buffer too small!"
424: \ copy into
425: tuck r@ cell+ dup @ cell+ + swap cmove
426: \ make delimiter
427: 0 r@ cell+ dup @ cell+ + 2 pick + c! 1 + r> cell+ +!
428: ;
429:
430: : only-path ( adr len path^ -- )
431: dup 0 swap cell+ ! also-path ;
432:
433: : path+ ( path-addr "dir" -- ) \ gforth
434: \G Add the directory @var{dir} to the search path @var{path-addr}.
435: name rot also-path ;
436:
437: : fpath+ ( "dir" ) \ gforth
438: \G Add directory @var{dir} to the Forth search path.
439: fpath path+ ;
440:
441: : path= ( path-addr "dir1|dir2|dir3" ) \ gforth
442: \G Make a complete new search path; the path separator is |.
443: name 2dup bounds ?DO i c@ [char] | = IF 0 i c! THEN LOOP
444: rot only-path ;
445:
446: : fpath= ( "dir1|dir2|dir3" ) \ gforth
447: \G Make a complete new Forth search path; the path separator is |.
448: fpath path= ;
449:
450: : path>string cell+ dup cell+ swap @ ;
451:
452: : next-path ( adr len -- adr2 len2 )
453: 2dup 0 scan
454: dup 0= IF 2drop 0 -rot 0 -rot EXIT THEN
455: >r 1+ -rot r@ 1- -rot
456: r> - ;
457:
458: : previous-path ( path^ -- )
459: dup path>string
460: BEGIN tuck dup WHILE repeat ;
461:
462: : .path ( path-addr -- ) \ gforth
463: \G Display the contents of the search path @var{path-addr}.
464: path>string
465: BEGIN next-path dup WHILE type space REPEAT 2drop 2drop ;
466:
467: : .fpath ( -- ) \ gforth
468: \G Display the contents of the Forth search path.
469: fpath .path ;
470:
471: : absolut-path? ( addr u -- flag ) \ gforth
472: \G A path is absolute if it starts with a / or a ~ (~ expansion),
473: \G or if it is in the form ./*, extended regexp: ^[/~]|./, or if
474: \G it has a colon as second character ("C:..."). Paths simply
475: \G containing a / are not absolute!
476: 2dup 2 u> swap 1+ c@ [char] : = and >r \ dos absoulte: c:/....
477: over c@ [char] / = >r
478: over c@ [char] ~ = >r
479: \ 2dup S" ../" string-prefix? r> or >r \ not catered for in expandtopic
480: S" ./" string-prefix?
481: r> r> r> or or or ;
482:
483: Create ofile 0 c, 255 chars allot
484: Create tfile 0 c, 255 chars allot
485:
486: : pathsep? dup [char] / = swap [char] \ = or ;
487:
488: : need/ ofile dup c@ + c@ pathsep? 0= IF s" /" ofile +place THEN ;
489:
490: : extractpath ( adr len -- adr len2 )
491: BEGIN dup WHILE 1-
492: 2dup + c@ pathsep? IF EXIT THEN
493: REPEAT ;
494:
495: : remove~+ ( -- )
496: ofile count s" ~+/" string-prefix?
497: IF
498: ofile count 3 /string ofile place
499: THEN ;
500:
501: : expandtopic ( -- ) \ stack effect correct? - anton
502: \ expands "./" into an absolute name
503: ofile count s" ./" string-prefix?
504: IF
505: ofile count 1 /string tfile place
506: 0 ofile c! sourcefilename extractpath ofile place
507: ofile c@ IF need/ THEN
508: tfile count over c@ pathsep? IF 1 /string THEN
509: ofile +place
510: THEN ;
511:
512: : compact.. ( adr len -- adr2 len2 )
513: \ deletes phrases like "xy/.." out of our directory name 2dec97jaw
514: over swap
515: BEGIN dup WHILE
516: dup >r '/ scan 2dup s" /../" string-prefix?
517: IF
518: dup r> - >r 4 /string over r> + 4 -
519: swap 2dup + >r move dup r> over -
520: ELSE
521: rdrop dup 1 min /string
522: THEN
523: REPEAT drop over - ;
524:
525: : reworkdir ( -- )
526: remove~+
527: ofile count compact..
528: nip ofile c! ;
529:
530: : open-ofile ( -- fid ior )
531: \G opens the file whose name is in ofile
532: expandtopic reworkdir
533: ofile count r/o open-file ;
534:
535: : check-path ( adr1 len1 adr2 len2 -- fd 0 | 0 <>0 )
536: 0 ofile ! >r >r ofile place need/
537: r> r> ofile +place
538: open-ofile ;
539:
540: : open-path-file ( addr1 u1 path-addr -- wfileid addr2 u2 0 | ior ) \ gforth
541: \G Look in path @var{path-addr} for the file specified by @var{addr1 u1}.
542: \G If found, the resulting path and an open file descriptor
543: \G are returned. If the file is not found, @var{ior} is non-zero.
544: >r
545: 2dup absolut-path?
546: IF rdrop
547: ofile place open-ofile
548: dup 0= IF >r ofile count r> THEN EXIT
549: ELSE r> path>string
550: BEGIN next-path dup
551: WHILE 5 pick 5 pick check-path
552: 0= IF >r 2drop 2drop r> ofile count 0 EXIT ELSE drop THEN
553: REPEAT
554: 2drop 2drop 2drop -38
555: THEN ;
556:
557: : open-fpath-file ( addr1 u1 -- wfileid addr2 u2 0 | ior ) \ gforth
558: \G Look in the Forth search path for the file specified by @var{addr1 u1}.
559: \G If found, the resulting path and an open file descriptor
560: \G are returned. If the file is not found, @var{ior} is non-zero.
561: fpath open-path-file ;
562:
563: fpath= ~+
564:
565: [THEN]
566:
567: \ \ -------------------- include require 13may99jaw
568:
569: >CROSS
570:
571: : add-included-file ( adr len -- adr )
572: dup >fl-name char+ allocate throw >r
573: file-list @ r@ ! r@ file-list !
574: r@ >fl-name place r> ;
575:
576: : included? ( c-addr u -- f )
577: file-list
578: BEGIN @ dup
579: WHILE >r 2dup r@ >fl-name count str=
580: IF rdrop 2drop true EXIT THEN
581: r>
582: REPEAT
583: 2drop drop false ;
584:
585: false DebugFlag showincludedfiles
586:
587: : included1 ( fd adr u -- )
588: \ include file adr u / fd
589: \ we don't use fd with include-file, because the forth system
590: \ doesn't know the name of the file to get a nice error report
591: [d?] showincludedfiles
592: IF cr ." Including: " 2dup type ." ..." THEN
593: rot close-file throw
594: source-desc >r
595: add-included-file to source-desc
596: sourcefilename
597: ['] included catch
598: r> to source-desc
599: throw ;
600:
601: : included ( adr len -- )
602: cross-file-list to file-list
603: open-fpath-file throw
604: included1 ;
605:
606: : required ( adr len -- )
607: cross-file-list to file-list
608: open-fpath-file throw \ 2dup cr ." R:" type
609: 2dup included?
610: IF 2drop close-file throw
611: ELSE included1
612: THEN ;
613:
614: : include bl word count included ;
615:
616: : require bl word count required ;
617:
618: 0 [IF]
619:
620: also forth definitions previous
621:
622: : included ( adr len -- ) included ;
623:
624: : required ( adr len -- ) required ;
625:
626: : include include ;
627:
628: : require require ;
629:
630: [THEN]
631:
632: >CROSS
633: hex
634:
635: \ \ -------------------- Error Handling 05aug97jaw
636:
637: \ Flags
638:
639: also forth definitions \ these values may be predefined before
640: \ the cross-compiler is loaded
641:
642: false DefaultValue stack-warn \ check on empty stack at any definition
643: false DefaultValue create-forward-warn \ warn on forward declaration of created words
644:
645: previous >CROSS
646:
647: : .dec
648: base @ decimal swap . base ! ;
649:
650: : .sourcepos
651: cr sourcefilename type ." :"
652: sourceline# .dec ;
653:
654: : warnhead
655: \G display error-message head
656: \G perhaps with linenumber and filename
657: .sourcepos ." Warning: " ;
658:
659: : empty? depth IF .sourcepos ." Stack not empty!" THEN ;
660:
661: stack-warn [IF]
662: : defempty? empty? ;
663: [ELSE]
664: : defempty? ; immediate
665: \ : defempty? .sourcepos ;
666: [THEN]
667:
668: \ \ -------------------- Compiler Plug Ins 01aug97jaw
669:
670: >CROSS
671:
672: \ Compiler States
673:
674: Variable comp-state
675: 0 Constant interpreting
676: 1 Constant compiling
677: 2 Constant resolving
678: 3 Constant assembling
679:
680: : compiling? comp-state @ compiling = ;
681:
682: : pi-undefined -1 ABORT" Plugin undefined" ;
683:
684: : Plugin ( -- : pluginname )
685: Create
686: \ for normal cross-compiling only one action
687: \ exists, this fields are identical. For the instant
688: \ simulation environment we need, two actions for each plugin
689: \ the target one and the one that generates the simulation code
690: ['] pi-undefined , \ action
691: ['] pi-undefined , \ target plugin action
692: 8765 , \ plugin magic
693: DOES> perform ;
694:
695: Plugin DummyPlugin
696:
697: : 'PI ( -- addr : pluginname )
698: ' >body dup 2 cells + @ 8765 <> ABORT" not a plugin" ;
699:
700: : plugin-of ( xt -- : pluginname )
701: dup 'PI 2! ;
702:
703: : action-of ( xt -- : plunginname )
704: 'PI cell+ ! ;
705:
706: : TPA ( -- : plugin )
707: \ target plugin action
708: \ executes current target action of plugin
709: 'PI cell+ POSTPONE literal POSTPONE perform ; immediate
710:
711: Variable ppi-temp 0 ppi-temp !
712:
713: : pa:
714: \g define plugin action
715: ppi-temp @ ABORT" pa: definition not closed"
716: 'PI ppi-temp ! :noname ;
717:
718: : ;pa
719: \g end a definition for plugin action
720: POSTPONE ; ppi-temp @ ! 0 ppi-temp ! ; immediate
721:
722:
723: Plugin dlit, ( d -- ) \ compile numerical value the target
724: Plugin lit, ( n -- )
725: Plugin alit, ( n -- )
726:
727: Plugin branch, ( target-addr -- ) \ compiles a branch
728: Plugin ?branch, ( target-addr -- ) \ compiles a ?branch
729: Plugin branchmark, ( -- branch-addr ) \ reserves room for a branch
730: Plugin ?branchmark, ( -- branch-addr ) \ reserves room for a ?branch
731: Plugin ?domark, ( -- branch-addr ) \ reserves room for a ?do branch
732: Plugin branchto, ( -- ) \ actual program position is target of a branch (do e.g. alignment)
733: ' NOOP plugin-of branchto,
734: Plugin branchtoresolve, ( branch-addr -- ) \ resolves a forward reference from branchmark
735: Plugin branchtomark, ( -- target-addr ) \ marks a branch destination
736:
737: Plugin colon, ( tcfa -- ) \ compiles call to tcfa at current position
738: Plugin prim, ( tcfa -- ) \ compiles primitive invocation
739: Plugin colonmark, ( -- addr ) \ marks a colon call
740: Plugin colon-resolve ( tcfa addr -- )
741:
742: Plugin addr-resolve ( target-addr addr -- )
743: Plugin doer-resolve ( ghost res-pnt target-addr addr -- ghost res-pnt )
744:
745: Plugin ncontrols? ( [ xn ... x1 ] n -- ) \ checks wheter n control structures are open
746: Plugin if, ( -- if-token )
747: Plugin else, ( if-token -- if-token )
748: Plugin then, ( if-token -- )
749: Plugin ahead,
750: Plugin begin,
751: Plugin while,
752: Plugin until,
753: Plugin again,
754: Plugin repeat,
755: Plugin cs-swap ( x1 x2 -- x2 x1 )
756:
757: Plugin case, ( -- n )
758: Plugin of, ( n -- x1 n )
759: Plugin endof, ( x1 n -- x2 n )
760: Plugin endcase, ( x1 .. xn n -- )
761:
762: Plugin do, ( -- do-token )
763: Plugin ?do, ( -- ?do-token )
764: Plugin for, ( -- for-token )
765: Plugin loop, ( do-token / ?do-token -- )
766: Plugin +loop, ( do-token / ?do-token -- )
767: Plugin next, ( for-token )
768: Plugin leave, ( -- )
769: Plugin ?leave, ( -- )
770:
771: Plugin ca>native \ Convert a code address to the processors
772: \ native address. This is used in doprim, and
773: \ code/code: primitive definitions word to
774: \ convert the addresses.
775: \ The only target where we need this is the misc
776: \ which is a 16 Bit processor with word addresses
777: \ but the forth system we build has a normal byte
778: \ addressed memory model
779:
780: Plugin doprim, \ compiles start of a primitive
781: Plugin docol, \ compiles start of a colon definition
782: Plugin doer,
783: Plugin fini, \ compiles end of definition ;s
784: Plugin doeshandler,
785: Plugin dodoes,
786:
787: Plugin colon-start
788: ' noop plugin-of colon-start
789: Plugin colon-end
790: ' noop plugin-of colon-end
791:
792: Plugin ]comp \ starts compilation
793: ' noop plugin-of ]comp
794: Plugin comp[ \ ends compilation
795: ' noop plugin-of comp[
796:
797: Plugin t>body \ we need the system >body
798: \ and the target >body
799:
800: >TARGET
801: : >body t>body ;
802:
803:
804: \ Ghost Builder 06oct92py
805:
806: >CROSS
807: hex
808: \ Values for ghost magic
809: 4711 Constant <fwd> 4712 Constant <res>
810: 4713 Constant <imm> 4714 Constant <do:>
811: 4715 Constant <skip>
812:
813: \ Bitmask for ghost flags
814: 1 Constant <unique>
815: 2 Constant <primitive>
816:
817: \ FXIME: move this to general stuff?
818: : set-flag ( addr flag -- )
819: over @ or swap ! ;
820:
821: : reset-flag ( addr flag -- )
822: invert over @ and swap ! ;
823:
824: : get-flag ( addr flag -- f )
825: swap @ and 0<> ;
826:
827:
828: Struct
829:
830: \ link to next ghost (always the first element)
831: cell% field >next-ghost
832:
833: \ type of ghost
834: cell% field >magic
835:
836: \ pointer where ghost is in target, or if unresolved
837: \ points to the where we have to resolve (linked-list)
838: cell% field >link
839:
840: \ execution semantics (while target compiling) of ghost
841: cell% field >exec
842:
843: \ compilation action of this ghost; this is what is
844: \ done to compile a call (or whatever) to this definition.
845: \ E.g. >comp contains the semantic of postpone s"
846: \ whereas >exec-compile contains the semantic of s"
847: cell% field >comp
848:
849: \ Compilation sematics (while parsing) of this ghost. E.g.
850: \ "\" will skip the rest of line.
851: \ These semantics are defined by Cond: and
852: \ if a word is made immediate in instant, then the >exec2 field
853: \ gets copied to here
854: cell% field >exec-compile
855:
856: \ Additional execution semantics of this ghost. This is used
857: \ for code generated by instant and for the doer-xt of created
858: \ words
859: cell% field >exec2
860:
861: cell% field >created
862:
863: \ the xt of the created ghost word itself
864: cell% field >ghost-xt
865:
866: \ pointer to the counted string of the assiciated
867: \ assembler label
868: cell% field >asm-name
869:
870: \ mapped primitives have a special address, so
871: \ we are able to detect them
872: cell% field >asm-dummyaddr
873:
874: \ for builder (create, variable...) words
875: \ the execution symantics of words built are placed here
876: \ this is a doer ghost or a dummy ghost
877: cell% field >do:ghost
878:
879: cell% field >ghost-flags
880:
881: cell% field >ghost-name
882:
883: End-Struct ghost-struct
884:
885: Variable ghost-list
886: 0 ghost-list !
887:
888: Variable executed-ghost \ last executed ghost, needed in tcreate and gdoes>
889: \ Variable last-ghost \ last ghost that is created
890: Variable last-header-ghost \ last ghost definitions with header
891:
892: \ space for ghosts resolve structure
893: \ we create ghosts in a sepearte space
894: \ and not to the current host dp, because this
895: \ gives trouble with instant while compiling and creating
896: \ a ghost for a forward reference
897: \ BTW: we cannot allocate another memory region
898: \ because allot will check the overflow!!
899: Variable cross-space-dp
900: Create cross-space 250000 allot here 100 allot align
901: Constant cross-space-end
902: cross-space cross-space-dp !
903: Variable cross-space-dp-orig
904:
905: : cross-space-used cross-space-dp @ cross-space - ;
906:
907: : >space ( -- )
908: dp @ cross-space-dp-orig !
909: cross-space-dp @ dp ! ;
910:
911: : space> ( -- )
912: dp @ dup cross-space-dp !
913: cross-space-end u> ABORT" CROSS: cross-space overflow"
914: cross-space-dp-orig @ dp ! ;
915:
916: \ this is just for debugging, to see this in the backtrace
917: : execute-exec execute ;
918: : execute-exec2 execute ;
919: : execute-exec-compile execute ;
920:
921: : NoExec
922: executed-ghost @ >exec2 @
923: ?dup
924: IF execute-exec2
925: ELSE true ABORT" CROSS: Don't execute ghost, or immediate target word"
926: THEN ;
927:
928: Defer is-forward
929:
930: : (ghostheader) ( -- )
931: ghost-list linked <fwd> , 0 , ['] NoExec , ['] is-forward ,
932: 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , ;
933:
934: : ghostheader ( -- ) (ghostheader) 0 , ;
935:
936: ' Ghosts >wordlist Constant ghosts-wordlist
937:
938: \ the current wordlist for ghost definitions in the host
939: ghosts-wordlist Value current-ghosts
940:
941: : Make-Ghost ( "name" -- ghost )
942: >space
943: \ save current and create in ghost vocabulary
944: get-current >r current-ghosts set-current
945: >in @ Create >in !
946: \ some forth systems like iForth need the immediate directly
947: \ after the word is created
948: \ restore current
949: r> set-current
950: here (ghostheader)
951: bl word count string, align
952: space>
953: \ set ghost-xt field by doing a search
954: dup >ghost-name count
955: current-ghosts search-wordlist
956: 0= ABORT" CROSS: Just created, must be there!"
957: over >ghost-xt !
958: DOES>
959: dup executed-ghost !
960: >exec @ execute-exec ;
961:
962: \ ghost words 14oct92py
963: \ changed: 10may93py/jaw
964:
965: Defer search-ghosts
966:
967: : (search-ghosts) ( adr len -- cfa true | 0 )
968: current-ghosts search-wordlist ;
969:
970: ' (search-ghosts) IS search-ghosts
971:
972: : gsearch ( addr len -- ghost true | 0 )
973: search-ghosts
974: dup IF swap >body swap THEN ;
975:
976: : gfind ( string -- ghost true / string false )
977: \ searches for string in word-list ghosts
978: \ dup count type space
979: dup >r count gsearch
980: dup IF rdrop ELSE r> swap THEN ;
981:
982: : gdiscover ( xt -- ghost true | xt false )
983: >r ghost-list
984: BEGIN @ dup
985: WHILE dup >magic @ <fwd> <>
986: IF dup >link @ r@ =
987: IF rdrop true EXIT THEN
988: THEN
989: REPEAT
990: drop r> false ;
991:
992: : xt>ghost ( xt -- ghost )
993: gdiscover 0= ABORT" CROSS: ghost not found for this xt" ;
994:
995: : Ghost ( "name" -- ghost )
996: >in @ bl word gfind IF nip EXIT THEN
997: drop >in ! Make-Ghost ;
998:
999: : >ghostname ( ghost -- adr len )
1000: >ghost-name count ;
1001:
1002: : forward? ( ghost -- flag )
1003: >magic @ <fwd> = ;
1004:
1005: : undefined? ( ghost -- flag )
1006: >magic @ dup <fwd> = swap <skip> = or ;
1007:
1008: : immediate? ( ghost -- flag )
1009: >magic @ <imm> = ;
1010:
1011: Variable TWarnings
1012: TWarnings on
1013: Variable Exists-Warnings
1014: Exists-Warnings on
1015:
1016: : exists-warning ( ghost -- ghost )
1017: TWarnings @ Exists-Warnings @ and
1018: IF dup >ghostname warnhead type ." exists " THEN ;
1019:
1020: \ : HeaderGhost Ghost ;
1021:
1022: Variable reuse-ghosts reuse-ghosts off
1023:
1024: : HeaderGhost ( "name" -- ghost )
1025: >in @
1026: bl word count
1027: \ 2dup type space
1028: current-ghosts search-wordlist
1029: IF >body dup undefined? reuse-ghosts @ or
1030: IF nip EXIT
1031: ELSE exists-warning
1032: THEN
1033: drop >in !
1034: ELSE >in !
1035: THEN
1036: \ we keep the execution semantics of the prviously
1037: \ defined words, this is a workaround
1038: \ for the redefined \ until vocs work
1039: Make-Ghost ;
1040:
1041: : .ghost ( ghost -- ) >ghostname type ;
1042:
1043: \ ' >ghostname ALIAS @name
1044:
1045: : findghost ( "ghostname" -- ghost )
1046: bl word gfind 0= ABORT" CROSS: Ghost don't exists" ;
1047:
1048: : [G'] ( -- ghost : name )
1049: \G ticks a ghost and returns its address
1050: findghost
1051: state @ IF postpone literal THEN ; immediate
1052:
1053: : g>xt ( ghost -- xt )
1054: \G Returns the xt (cfa) of a ghost. Issues a warning if undefined.
1055: dup undefined? ABORT" CROSS: forward " >link @ ;
1056:
1057: : g>body ( ghost -- body )
1058: \G Returns the body-address (pfa) of a ghost.
1059: \G Issues a warning if undefined (a forward-reference).
1060: g>xt X >body ;
1061:
1062: 1 Constant <label>
1063:
1064: Struct
1065: \ bitmask of address type (not used for now)
1066: cell% field addr-type
1067: \ if this address is an xt, this field points to the ghost
1068: cell% field addr-xt-ghost
1069: \ a bit mask that tells as what part of the cell
1070: \ is refenced from an address pointer, used for assembler generation
1071: cell% field addr-refs
1072: End-Struct addr-struct
1073:
1074: : %allocerase ( align size -- addr )
1075: dup >r %alloc dup r> erase ;
1076:
1077: \ returns the addr struct, define it if 0 reference
1078: : define-addr-struct ( addr -- struct-addr )
1079: dup @ ?dup IF nip EXIT THEN
1080: addr-struct %allocerase tuck swap ! ;
1081:
1082: >cross
1083:
1084: \ Predefined ghosts 12dec92py
1085:
1086: Ghost - drop \ need a ghost otherwise "-" would be treated as a number
1087:
1088: Ghost 0= drop
1089: Ghost branch Ghost ?branch 2drop
1090: Ghost unloop Ghost ;S 2drop
1091: Ghost lit Ghost ! 2drop
1092: Ghost noop drop
1093: Ghost over Ghost = Ghost drop 2drop drop
1094: Ghost 2drop drop
1095: Ghost 2dup drop
1096: Ghost call drop
1097: Ghost @ drop
1098: Ghost useraddr drop
1099: Ghost execute drop
1100: Ghost + drop
1101: Ghost decimal drop
1102: Ghost hex drop
1103: Ghost lit@ drop
1104: Ghost lit-perform drop
1105: Ghost lit+ drop
1106: Ghost does-exec drop
1107:
1108: Ghost :docol Ghost :doesjump Ghost :dodoes 2drop drop
1109: Ghost :dovar drop
1110:
1111: \ \ Parameter for target systems 06oct92py
1112:
1113:
1114: \ we define it ans like...
1115: wordlist Constant target-environment
1116:
1117: \ save information of current dictionary to restore with environ>
1118: Variable env-current
1119:
1120: : >ENVIRON get-current env-current ! target-environment set-current ;
1121: : ENVIRON> env-current @ set-current ;
1122:
1123: >TARGET
1124:
1125: : environment? ( addr len -- [ x ] true | false )
1126: \G returns the content of environment variable and true or
1127: \G false if not present
1128: target-environment search-wordlist
1129: IF EXECUTE true ELSE false THEN ;
1130:
1131: : $has? ( addr len -- x | false )
1132: \G returns the content of environment variable
1133: \G or false if not present
1134: T environment? H dup IF drop THEN ;
1135:
1136: : e? ( "name" -- x )
1137: \G returns the content of environment variable.
1138: \G The variable is expected to exist. If not, issue an error.
1139: bl word count T environment? H
1140: 0= ABORT" environment variable not defined!" ;
1141:
1142: : has? ( "name" --- x | false )
1143: \G returns the content of environment variable
1144: \G or false if not present
1145: bl word count T $has? H ;
1146:
1147:
1148: >ENVIRON get-order get-current swap 1+ set-order
1149: true SetValue compiler
1150: true SetValue cross
1151: true SetValue standard-threading
1152: >TARGET previous
1153:
1154: 0
1155: [IFDEF] mach-file drop mach-file count 1 [THEN]
1156: [IFDEF] machine-file drop machine-file 1 [THEN]
1157: [IF] included hex
1158: [ELSE] cr ." No machine description!" ABORT
1159: [THEN]
1160:
1161: >ENVIRON
1162:
1163: T has? ec H
1164: [IF]
1165: false DefaultValue relocate
1166: false DefaultValue file
1167: false DefaultValue OS
1168: false DefaultValue prims
1169: false DefaultValue floating
1170: false DefaultValue glocals
1171: false DefaultValue dcomps
1172: false DefaultValue hash
1173: false DefaultValue xconds
1174: false DefaultValue header
1175: false DefaultValue backtrace
1176: false DefaultValue new-input
1177: false DefaultValue peephole
1178: false DefaultValue abranch
1179: true DefaultValue f83headerstring
1180: true DefaultValue control-rack
1181: [THEN]
1182:
1183: true DefaultValue gforthcross
1184: true DefaultValue interpreter
1185: true DefaultValue ITC
1186: false DefaultValue rom
1187: false DefaultValue flash
1188: true DefaultValue standardthreading
1189:
1190: \ ANSForth environment stuff
1191: 8 DefaultValue ADDRESS-UNIT-BITS
1192: 255 DefaultValue MAX-CHAR
1193: 255 DefaultValue /COUNTED-STRING
1194:
1195: >TARGET
1196: s" relocate" T environment? H
1197: \ JAW why set NIL to this?!
1198: [IF] drop \ SetValue NIL
1199: [ELSE] >ENVIRON X NIL SetValue relocate
1200: [THEN]
1201: >TARGET
1202:
1203: 0 Constant NIL
1204:
1205: >CROSS
1206:
1207: \ \ Create additional parameters 19jan95py
1208:
1209: \ currently cross only works for host machines with address-unit-bits
1210: \ eual to 8 because of s! and sc!
1211: \ but I start to query the environment just to modularize a little bit
1212:
1213: : check-address-unit-bits ( -- )
1214: \ s" ADDRESS-UNIT-BITS" environment?
1215: \ IF 8 <> ELSE true THEN
1216: \ ABORT" ADDRESS-UNIT-BITS unknown or not equal to 8!"
1217:
1218: \ shit, this doesn't work because environment? is only defined for
1219: \ gforth.fi and not kernl???.fi
1220: ;
1221:
1222: check-address-unit-bits
1223: 8 Constant bits/byte \ we define: byte is address-unit
1224:
1225: 1 bits/byte lshift Constant maxbyte
1226: \ this sets byte size for the target machine, (probably right guess) jaw
1227:
1228: T
1229: NIL Constant TNIL
1230: cell Constant tcell
1231: cell<< Constant tcell<<
1232: cell>bit Constant tcell>bit
1233: bits/char Constant tbits/char
1234: bits/char H bits/byte T /
1235: Constant tchar
1236: float Constant tfloat
1237: 1 bits/char lshift Constant tmaxchar
1238: [IFUNDEF] bits/byte
1239: 8 Constant tbits/byte
1240: [ELSE]
1241: bits/byte Constant tbits/byte
1242: [THEN]
1243: H
1244: tbits/char bits/byte / Constant tbyte
1245:
1246:
1247: \ Variables 06oct92py
1248:
1249: Variable (tlast)
1250: (tlast) Value tlast TNIL tlast ! \ Last name field
1251: Variable tlastcfa \ Last code field
1252:
1253: \ statistics 10jun97jaw
1254:
1255: Variable headers-named 0 headers-named !
1256: Variable user-vars 0 user-vars !
1257:
1258: : target>bitmask-size ( u1 -- u2 )
1259: 1- tcell>bit rshift 1+ ;
1260:
1261: : allocatetarget ( size -- adr )
1262: dup allocate ABORT" CROSS: No memory for target"
1263: swap over swap erase ;
1264:
1265: \ \ memregion.fs
1266:
1267:
1268: Variable last-defined-region \ pointer to last defined region
1269: Variable region-link \ linked list with all regions
1270: Variable mirrored-link \ linked list for mirrored regions
1271: 0 dup mirrored-link ! region-link !
1272:
1273: : >rname 9 cells + ;
1274: : >rtouch 8 cells + ; \ executed when region is accessed
1275: : >rbm 4 cells + ; \ bitfield per cell witch indicates relocation
1276: : >rmem 5 cells + ;
1277: : >rtype 6 cells + ; \ field per cell witch points to a type struct
1278: : >rrom 7 cells + ; \ a -1 indicates that this region is rom
1279: : >rlink 3 cells + ;
1280: : >rdp 2 cells + ;
1281: : >rlen cell+ ;
1282: : >rstart ;
1283:
1284: : (region) ( addr len region -- )
1285: \G change startaddress and length of an existing region
1286: >r r@ last-defined-region !
1287: r@ >rlen ! dup r@ >rstart ! r> >rdp ! ;
1288:
1289: : uninitialized -1 ABORT" CROSS: Region is uninitialized" ;
1290:
1291: : region ( addr len -- "name" )
1292: \G create a new region
1293: \ check whether predefined region exists
1294: save-input bl word find >r >r restore-input throw r> r> 0=
1295: IF \ make region
1296: drop
1297: save-input create restore-input throw
1298: here last-defined-region !
1299: over ( startaddr ) , ( length ) , ( dp ) ,
1300: region-link linked 0 , 0 , 0 , 0 ,
1301: ['] uninitialized ,
1302: bl word count string,
1303: ELSE \ store new parameters in region
1304: bl word drop
1305: >body (region)
1306: THEN ;
1307:
1308: : borders ( region -- startaddr endaddr )
1309: \G returns lower and upper region border
1310: dup >rstart @ swap >rlen @ over + ;
1311:
1312: : extent ( region -- startaddr len )
1313: \G returns the really used area
1314: dup >rstart @ swap >rdp @ over - ;
1315:
1316: : area ( region -- startaddr totallen )
1317: \G returns the total area
1318: dup >rstart @ swap >rlen @ ;
1319:
1320: : dp@ ( region -- dp )
1321: >rdp @ ;
1322:
1323: : mirrored ( -- )
1324: \G mark last defined region as mirrored
1325: mirrored-link
1326: align linked last-defined-region @ , ;
1327:
1328: : writeprotected
1329: \G mark a region as write protected
1330: -1 last-defined-region @ >rrom ! ;
1331:
1332: : .addr ( u -- )
1333: \G prints a 16 or 32 Bit nice hex value
1334: base @ >r hex
1335: tcell 2 u>
1336: IF s>d <# # # # # [char] . hold # # # # #> type
1337: ELSE s>d <# # # # # # #> type
1338: THEN r> base ! space ;
1339:
1340: : .regions \G display region statistic
1341:
1342: \ we want to list the regions in the right order
1343: \ so first collect all regions on stack
1344: 0 region-link @
1345: BEGIN dup WHILE dup @ REPEAT drop
1346: BEGIN dup
1347: WHILE cr
1348: 0 >rlink - >r
1349: r@ >rname count tuck type
1350: 12 swap - 0 max spaces space
1351: ." Start: " r@ >rstart @ dup .addr space
1352: ." End: " r@ >rlen @ + .addr space
1353: ." DP: " r> >rdp @ .addr
1354: REPEAT drop
1355: s" rom" T $has? H 0= ?EXIT
1356: cr ." Mirrored:"
1357: mirrored-link @
1358: BEGIN dup
1359: WHILE space dup cell+ @ >rname count type @
1360: REPEAT drop cr
1361: ;
1362:
1363: \ -------- predefined regions
1364:
1365: 0 0 region address-space
1366: \ total memory addressed and used by the target system
1367:
1368: 0 0 region user-region
1369: \ data for user variables goes here
1370: \ this has to be defined before dictionary or ram-dictionary
1371:
1372: 0 0 region dictionary
1373: \ rom area for the compiler
1374:
1375: T has? rom H
1376: [IF]
1377: 0 0 region ram-dictionary mirrored
1378: \ ram area for the compiler
1379: [ELSE]
1380: ' dictionary ALIAS ram-dictionary
1381: [THEN]
1382:
1383: 0 0 region return-stack
1384:
1385: 0 0 region data-stack
1386:
1387: 0 0 region tib-region
1388:
1389: ' dictionary ALIAS rom-dictionary
1390:
1391: : setup-region ( region -- )
1392: >r
1393: \ allocate mem
1394: r@ >rlen @ allocatetarget
1395: r@ >rmem !
1396:
1397: r@ >rlen @
1398: target>bitmask-size allocatetarget
1399: r@ >rbm !
1400:
1401: r@ >rlen @
1402: tcell / 1+ cells allocatetarget r@ >rtype !
1403:
1404: ['] noop r@ >rtouch !
1405: rdrop ;
1406:
1407: : setup-target ( -- ) \G initialize target's memory space
1408: s" rom" T $has? H
1409: IF \ check for ram and rom...
1410: \ address-space area nip 0<>
1411: ram-dictionary area nip 0<>
1412: rom-dictionary area nip 0<>
1413: and 0=
1414: ABORT" CROSS: define address-space, rom- , ram-dictionary, with rom-support!"
1415: THEN
1416: address-space area nip
1417: IF
1418: address-space area
1419: ELSE
1420: dictionary area
1421: THEN
1422: nip 0=
1423: ABORT" CROSS: define at least address-space or dictionary!!"
1424:
1425: \ allocate target for each region
1426: region-link
1427: BEGIN @ dup
1428: WHILE dup
1429: 0 >rlink - >r
1430: r@ >rlen @
1431: IF r@ setup-region
1432: THEN rdrop
1433: REPEAT drop ;
1434:
1435: \ MakeKernel 22feb99jaw
1436:
1437: : makekernel ( start targetsize -- )
1438: \G convenience word to setup the memory of the target
1439: \G used by main.fs of the c-engine based systems
1440: dictionary (region) setup-target ;
1441:
1442: >MINIMAL
1443: : makekernel makekernel ;
1444: >CROSS
1445:
1446: \ \ switched tdp for rom support 03jun97jaw
1447:
1448: \ second value is here to store some maximal value for statistics
1449: \ tempdp is also embedded here but has nothing to do with rom support
1450: \ (needs switched dp)
1451:
1452: variable tempdp 0 , \ temporary dp for resolving
1453: variable tempdp-save
1454:
1455: 0 [IF]
1456: variable romdp 0 , \ Dictionary-Pointer for ramarea
1457: variable ramdp 0 , \ Dictionary-Pointer for romarea
1458:
1459: \
1460: variable sramdp \ start of ram-area for forth
1461: variable sromdp \ start of rom-area for forth
1462:
1463: [THEN]
1464:
1465: 0 Value current-region
1466: 0 Value tdp
1467: Variable fixed \ flag: true: no automatic switching
1468: \ false: switching is done automatically
1469:
1470: \ Switch-Policy:
1471: \
1472: \ a header is always compiled into rom
1473: \ after a created word (create and variable) compilation goes to ram
1474: \
1475: \ Be careful: If you want to make the data behind create into rom
1476: \ you have to put >rom before create!
1477:
1478: variable constflag constflag off
1479:
1480: : activate ( region -- )
1481: \G next code goes to this region
1482: dup to current-region >rdp to tdp ;
1483:
1484: : (switchram)
1485: fixed @ ?EXIT s" rom" T $has? H 0= ?EXIT
1486: ram-dictionary activate ;
1487:
1488: : switchram
1489: constflag @
1490: IF constflag off ELSE (switchram) THEN ;
1491:
1492: : switchrom
1493: fixed @ ?EXIT rom-dictionary activate ;
1494:
1495: : >tempdp ( addr -- )
1496: tdp tempdp-save ! tempdp to tdp tdp ! ;
1497: : tempdp> ( -- )
1498: tempdp-save @ to tdp ;
1499:
1500: : >ram fixed off (switchram) fixed on ;
1501: : >rom fixed off switchrom fixed on ;
1502: : >auto fixed off switchrom ;
1503:
1504:
1505:
1506: \ : romstart dup sromdp ! romdp ! ;
1507: \ : ramstart dup sramdp ! ramdp ! ;
1508:
1509: \ default compilation goes to rom
1510: \ when romable support is off, only the rom switch is used (!!)
1511: >auto
1512:
1513: : there tdp @ ;
1514:
1515: >TARGET
1516:
1517: \ \ Target Memory Handling
1518:
1519: \ Byte ordering and cell size 06oct92py
1520:
1521: : cell+ tcell + ;
1522: : cells tcell<< lshift ;
1523: : chars tchar * ;
1524: : char+ tchar + ;
1525: : floats tfloat * ;
1526:
1527: >CROSS
1528: : cell/ tcell<< rshift ;
1529: >TARGET
1530: 20 CONSTANT bl
1531: \ TNIL Constant NIL
1532:
1533: >CROSS
1534:
1535: bigendian
1536: [IF]
1537: : DS! ( d addr -- ) tcell bounds swap 1-
1538: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
1539: : DS@ ( addr -- d ) >r 0 0 r> tcell bounds
1540: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP ;
1541: : Sc! ( n addr -- ) >r s>d r> tchar bounds swap 1-
1542: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
1543: : Sc@ ( addr -- n ) >r 0 0 r> tchar bounds
1544: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ;
1545: [ELSE]
1546: : DS! ( d addr -- ) tcell bounds
1547: DO maxbyte ud/mod rot I c! LOOP 2drop ;
1548: : DS@ ( addr -- n ) >r 0 0 r> tcell bounds swap 1-
1549: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP ;
1550: : Sc! ( n addr -- ) >r s>d r> tchar bounds
1551: DO maxbyte ud/mod rot I c! LOOP 2drop ;
1552: : Sc@ ( addr -- n ) >r 0 0 r> tchar bounds swap 1-
1553: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ;
1554: [THEN]
1555:
1556: : S! ( n addr -- ) >r s>d r> DS! ;
1557: : S@ ( addr -- n ) DS@ d>s ;
1558:
1559: : taddr>region ( taddr -- region | 0 )
1560: \G finds for a target-address the correct region
1561: \G returns 0 if taddr is not in range of a target memory region
1562: region-link
1563: BEGIN @ dup
1564: WHILE dup >r
1565: 0 >rlink - >r
1566: r@ >rlen @
1567: IF dup r@ borders within
1568: IF r> r> drop nip
1569: dup >rtouch @ EXECUTE EXIT
1570: THEN
1571: THEN
1572: r> drop
1573: r>
1574: REPEAT
1575: 2drop 0 ;
1576:
1577: : taddr>region-abort ( taddr -- region | 0 )
1578: \G Same as taddr>region but aborts if taddr is not
1579: \G a valid address in the target address space
1580: dup taddr>region dup 0=
1581: IF drop cr ." Wrong address: " .addr
1582: -1 ABORT" Address out of range!"
1583: THEN nip ;
1584:
1585: : (>regionimage) ( taddr -- 'taddr )
1586: dup
1587: \ find region we want to address
1588: taddr>region-abort
1589: >r
1590: \ calculate offset in region
1591: r@ >rstart @ -
1592: \ add regions real address in our memory
1593: r> >rmem @ + ;
1594:
1595: : (>regionramimage) ( taddr -- 'taddr )
1596: \G same as (>regionimage) but aborts if the region is rom
1597: dup
1598: \ find region we want to address
1599: taddr>region-abort
1600: >r
1601: r@ >rrom @ ABORT" CROSS: region is write-protected!"
1602: \ calculate offset in region
1603: r@ >rstart @ -
1604: \ add regions real address in our memory
1605: r> >rmem @ + ;
1606:
1607: : (>regionbm) ( taddr -- 'taddr bitmaskbaseaddr )
1608: dup
1609: \ find region we want to address
1610: taddr>region-abort
1611: >r
1612: \ calculate offset in region
1613: r@ >rstart @ -
1614: \ add regions real address in our memory
1615: r> >rbm @ ;
1616:
1617: : (>regiontype) ( taddr -- 'taddr )
1618: dup
1619: \ find region we want to address
1620: taddr>region-abort
1621: >r
1622: \ calculate offset in region
1623: r@ >rstart @ - tcell / cells
1624: \ add regions real address in our memory
1625: r> >rtype @ + ;
1626:
1627: \ Bit string manipulation 06oct92py
1628: \ 9may93jaw
1629: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
1630: : bits ( n -- n ) chars Bittable + c@ ;
1631:
1632: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
1633: : +bit ( addr n -- ) >bit over c@ or swap c! ;
1634: : -bit ( addr n -- ) >bit invert over c@ and swap c! ;
1635:
1636: : @relbit ( taddr -- f ) (>regionbm) swap cell/ >bit swap c@ and ;
1637:
1638: : (relon) ( taddr -- )
1639: [ [IFDEF] fd-relocation-table ]
1640: s" +" fd-relocation-table write-file throw
1641: dup s>d <# #s #> fd-relocation-table write-line throw
1642: [ [THEN] ]
1643: (>regionbm) swap cell/ +bit ;
1644:
1645: : (reloff) ( taddr -- )
1646: [ [IFDEF] fd-relocation-table ]
1647: s" -" fd-relocation-table write-file throw
1648: dup s>d <# #s #> fd-relocation-table write-line throw
1649: [ [THEN] ]
1650: (>regionbm) swap cell/ -bit ;
1651:
1652: DEFER >image
1653: DEFER >ramimage
1654: DEFER relon
1655: DEFER reloff
1656: DEFER correcter
1657:
1658: T has? relocate H
1659: [IF]
1660: ' (relon) IS relon
1661: ' (reloff) IS reloff
1662: ' (>regionimage) IS >image
1663: ' (>regionimage) IS >ramimage
1664: [ELSE]
1665: ' drop IS relon
1666: ' drop IS reloff
1667: ' (>regionimage) IS >image
1668: ' (>regionimage) IS >ramimage
1669: [THEN]
1670:
1671: : enforce-writeprotection ( -- )
1672: ['] (>regionramimage) IS >ramimage ;
1673:
1674: : relax-writeprotection ( -- )
1675: ['] (>regionimage) IS >ramimage ;
1676:
1677: : writeprotection-relaxed? ( -- )
1678: ['] >ramimage >body @ ['] (>regionimage) = ;
1679:
1680: \ Target memory access 06oct92py
1681:
1682: : align+ ( taddr -- rest )
1683: tcell tuck 1- and - [ tcell 1- ] Literal and ;
1684: : cfalign+ ( taddr -- rest )
1685: \ see kernel.fs:cfaligned
1686: /maxalign tuck 1- and - [ /maxalign 1- ] Literal and ;
1687:
1688: >TARGET
1689: : aligned ( taddr -- ta-addr ) dup align+ + ;
1690: \ assumes cell alignment granularity (as GNU C)
1691:
1692: : cfaligned ( taddr1 -- taddr2 )
1693: \ see kernel.fs
1694: dup cfalign+ + ;
1695:
1696: : @ ( taddr -- w ) >image S@ ;
1697: : ! ( w taddr -- ) >ramimage S! ;
1698: : c@ ( taddr -- char ) >image Sc@ ;
1699: : c! ( char taddr -- ) >ramimage Sc! ;
1700: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
1701: : 2! ( x1 x2 taddr -- ) T tuck ! cell+ ! H ;
1702:
1703: \ Target compilation primitives 06oct92py
1704: \ included A! 16may93jaw
1705:
1706: : here ( -- there ) there ;
1707: : allot ( n -- ) tdp +! ;
1708: : , ( w -- ) T here H tcell T allot ! H ;
1709: : c, ( char -- ) T here H tchar T allot c! H ;
1710: : align ( -- ) T here H align+ 0 ?DO bl T c, H tchar +LOOP ;
1711: : cfalign ( -- )
1712: T here H cfalign+ 0 ?DO bl T c, H tchar +LOOP ;
1713:
1714: : >address dup 0>= IF tbyte / THEN ; \ ?? jaw
1715: : A! swap >address swap dup relon T ! H ;
1716: : A, ( w -- ) >address T here H relon T , H ;
1717:
1718: \ high-level ghosts
1719:
1720: >CROSS
1721:
1722: Ghost (do) Ghost (?do) 2drop
1723: Ghost (for) drop
1724: Ghost (loop) Ghost (+loop) 2drop
1725: Ghost (next) drop
1726: Ghost (does>) Ghost (does>1) Ghost (does>2) 2drop drop
1727: Ghost compile, drop
1728: Ghost (.") Ghost (S") Ghost (ABORT") 2drop drop
1729: Ghost (C") Ghost c(abort") Ghost type 2drop drop
1730: Ghost ' drop
1731:
1732: \ user ghosts
1733:
1734: Ghost state drop
1735:
1736: \ \ -------------------- Host/Target copy etc. 29aug01jaw
1737:
1738:
1739: >CROSS
1740:
1741: : TD! >image DS! ;
1742: : TD@ >image DS@ ;
1743:
1744: : th-count ( taddr -- host-addr len )
1745: \G returns host address of target string
1746: assert1( tbyte 1 = )
1747: dup X c@ swap X char+ >image swap ;
1748:
1749: : ht-move ( haddr taddr len -- )
1750: \G moves data from host-addr to destination in target-addr
1751: \G character by character
1752: swap -rot bounds ?DO I c@ over X c! X char+ LOOP drop ;
1753:
1754: 2Variable last-string
1755: X has? rom [IF] $60 [ELSE] $00 [THEN] Constant header-masks
1756:
1757: : ht-header, ( addr count -- )
1758: dup there swap last-string 2!
1759: dup header-masks or T c, H bounds ?DO I c@ T c, H LOOP ;
1760: : ht-string, ( addr count -- )
1761: dup there swap last-string 2!
1762: dup T c, H bounds ?DO I c@ T c, H LOOP ;
1763: : ht-mem, ( addr count )
1764: bounds ?DO I c@ T c, H LOOP ;
1765:
1766: >TARGET
1767:
1768: : count dup X c@ swap X char+ swap ;
1769:
1770: : on >r -1 -1 r> TD! ;
1771: : off T 0 swap ! H ;
1772:
1773: : tcmove ( source dest len -- )
1774: \G cmove in target memory
1775: tchar * bounds
1776: ?DO dup T c@ H I T c! H 1+
1777: tchar +LOOP drop ;
1778:
1779: : tcallot ( char size -- )
1780: 0 ?DO dup T c, H tchar +LOOP drop ;
1781:
1782: : td, ( d -- )
1783: \G Store a host value as one cell into the target
1784: there tcell X allot TD! ;
1785:
1786: \ \ Load Assembler
1787:
1788: >TARGET
1789: H also Forth definitions
1790:
1791: \ FIXME: should we include the assembler really in the forth
1792: \ dictionary?!?!?!? This conflicts with the existing assembler
1793: \ of the host forth system!!
1794: [IFDEF] asm-include asm-include [THEN] hex
1795:
1796: previous
1797:
1798:
1799: >CROSS
1800:
1801: : (cc) T a, H ; ' (cc) plugin-of colon,
1802: : (prim) T a, H ; ' (prim) plugin-of prim,
1803:
1804: : (cr) >tempdp colon, tempdp> ; ' (cr) plugin-of colon-resolve
1805: : (ar) T ! H ; ' (ar) plugin-of addr-resolve
1806: : (dr) ( ghost res-pnt target-addr addr )
1807: >tempdp drop over
1808: dup >magic @ <do:> =
1809: IF doer,
1810: ELSE dodoes,
1811: THEN
1812: tempdp> ; ' (dr) plugin-of doer-resolve
1813:
1814: : (cm) ( -- addr )
1815: there -1 colon, ; ' (cm) plugin-of colonmark,
1816:
1817: >TARGET
1818: : compile, ( xt -- )
1819: dup xt>ghost >comp @ EXECUTE ;
1820: >CROSS
1821:
1822: \ resolve structure
1823:
1824: : >next ; \ link to next field
1825: : >tag cell+ ; \ indecates type of reference: 0: call, 1: address, 2: doer
1826: : >taddr cell+ cell+ ;
1827: : >ghost 3 cells + ;
1828: : >file 4 cells + ;
1829: : >line 5 cells + ;
1830:
1831: : (refered) ( ghost addr tag -- )
1832: \G creates a reference to ghost at address taddr
1833: >space
1834: rot >link linked
1835: ( taddr tag ) ,
1836: ( taddr ) ,
1837: last-header-ghost @ ,
1838: loadfile ,
1839: sourceline# ,
1840: space>
1841: ;
1842:
1843: : refered ( ghost tag -- )
1844: \G creates a resolve structure
1845: T here aligned H swap (refered)
1846: ;
1847:
1848: : killref ( addr ghost -- )
1849: \G kills a forward reference to ghost at position addr
1850: \G this is used to eleminate a :dovar refence after making a DOES>
1851: dup >magic @ <fwd> <> IF 2drop EXIT THEN
1852: swap >r >link
1853: BEGIN dup @ dup ( addr last this )
1854: WHILE dup >taddr @ r@ =
1855: IF @ over !
1856: ELSE nip THEN
1857: REPEAT rdrop 2drop
1858: ;
1859:
1860: Defer resolve-warning
1861:
1862: : reswarn-test ( ghost res-struct -- ghost res-struct )
1863: over cr ." Resolving " .ghost dup ." in " >ghost @ .ghost ;
1864:
1865: : reswarn-forward ( ghost res-struct -- ghost res-struct )
1866: over warnhead .ghost dup ." is referenced in "
1867: >ghost @ .ghost ;
1868:
1869: \ ' reswarn-test IS resolve-warning
1870:
1871: \ resolve 14oct92py
1872:
1873: : resolve-loop ( ghost resolve-list tcfa -- )
1874: >r
1875: BEGIN dup WHILE
1876: \ dup >tag @ 2 = IF reswarn-forward THEN
1877: resolve-warning
1878: r@ over >taddr @
1879: 2 pick >tag @
1880: CASE 0 OF colon-resolve ENDOF
1881: 1 OF addr-resolve ENDOF
1882: 2 OF doer-resolve ENDOF
1883: ENDCASE
1884: @ \ next list element
1885: REPEAT 2drop rdrop
1886: ;
1887:
1888: \ : resolve-loop ( ghost tcfa -- ghost tcfa )
1889: \ >r dup >link @
1890: \ BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
1891:
1892: \ exists 9may93jaw
1893:
1894: : exists ( ghost tcfa -- )
1895: \G print warning and set new target link in ghost
1896: swap exists-warning
1897: >link ! ;
1898:
1899: : colon-resolved ( ghost -- )
1900: \ compiles a call to a colon definition,
1901: \ compile action for >comp field
1902: >link @ colon, ;
1903:
1904: : prim-resolved ( ghost -- )
1905: \ compiles a call to a primitive
1906: >link @ prim, ;
1907:
1908: : (is-forward) ( ghost -- )
1909: colonmark, 0 (refered) ; \ compile space for call
1910: ' (is-forward) IS is-forward
1911:
1912: 0 Value resolved
1913:
1914: : resolve-forward-references ( ghost resolve-list -- )
1915: \ loop through forward referencies
1916: comp-state @ >r Resolving comp-state !
1917: over >link @ resolve-loop
1918: r> comp-state !
1919:
1920: ['] noop IS resolve-warning ;
1921:
1922:
1923: : (resolve) ( ghost tcfa -- ghost resolve-list )
1924: \ check for a valid address, it is a primitive reference
1925: \ otherwise
1926: dup taddr>region 0<> IF
1927: \ define this address in the region address type table
1928: 2dup (>regiontype) define-addr-struct addr-xt-ghost
1929: \ we define new address only if empty
1930: \ this is for not to take over the alias ghost
1931: \ (different ghost, but identical xt)
1932: \ but the very first that really defines it
1933: dup @ 0= IF ! ELSE 2drop THEN
1934: THEN
1935: swap >r
1936: r@ to resolved
1937:
1938: \ r@ >comp @ ['] is-forward =
1939: \ ABORT" >comp action not set on a resolved ghost"
1940:
1941: \ copmile action defaults to colon-resolved
1942: \ if this is not right something must be set before
1943: \ calling resolve
1944: r@ >comp @ ['] is-forward = IF
1945: ['] colon-resolved r@ >comp !
1946: THEN
1947: r@ >link @ swap \ ( list tcfa R: ghost )
1948: \ mark ghost as resolved
1949: r@ >link ! <res> r@ >magic !
1950: r> swap ;
1951:
1952: : resolve ( ghost tcfa -- )
1953: \G resolve referencies to ghost with tcfa
1954: \ is ghost resolved?, second resolve means another
1955: \ definition with the same name
1956: over undefined? 0= IF exists EXIT THEN
1957: (resolve)
1958: ( ghost resolve-list )
1959: resolve-forward-references ;
1960:
1961: : resolve-noforwards ( ghost tcfa -- )
1962: \G Same as resolve but complain if there are any
1963: \G forward references on this ghost
1964: \ is ghost resolved?, second resolve means another
1965: \ definition with the same name
1966: over undefined? 0= IF exists EXIT THEN
1967: (resolve)
1968: IF cr ." No forward references allowed on: " .ghost cr
1969: -1 ABORT" Illegal forward reference"
1970: THEN
1971: drop ;
1972:
1973: \ gexecute ghost, 01nov92py
1974:
1975: : (gexecute) ( ghost -- )
1976: dup >comp @ EXECUTE ;
1977:
1978: : gexecute ( ghost -- )
1979: dup >magic @ <imm> = ABORT" CROSS: gexecute on immediate word"
1980: (gexecute) ;
1981:
1982: : addr, ( ghost -- )
1983: dup forward? IF 1 refered 0 T a, H ELSE >link @ T a, H THEN ;
1984:
1985: \ .unresolved 11may93jaw
1986:
1987: variable ResolveFlag
1988:
1989: \ ?touched 11may93jaw
1990:
1991: : ?touched ( ghost -- flag ) dup forward? swap >link @
1992: 0 <> and ;
1993:
1994: : .forwarddefs ( ghost -- )
1995: ." appeared in:"
1996: >link
1997: BEGIN @ dup
1998: WHILE cr 5 spaces
1999: dup >ghost @ .ghost
2000: ." file " dup >file @ ?dup IF count type ELSE ." CON" THEN
2001: ." line " dup >line @ .dec
2002: REPEAT
2003: drop ;
2004:
2005: : ?resolved ( ghost -- )
2006: dup ?touched
2007: IF ResolveFlag on
2008: dup cr .ghost .forwarddefs
2009: ELSE drop
2010: THEN ;
2011:
2012: : .unresolved ( -- )
2013: ResolveFlag off cr ." Unresolved: "
2014: ghost-list
2015: BEGIN @ dup
2016: WHILE dup ?resolved
2017: REPEAT drop ResolveFlag @
2018: IF
2019: -1 abort" Unresolved words!"
2020: ELSE
2021: ." Nothing!"
2022: THEN
2023: cr ;
2024:
2025: : .stats
2026: base @ >r decimal
2027: cr ." named Headers: " headers-named @ .
2028: r> base ! ;
2029:
2030: >MINIMAL
2031:
2032: : .unresolved .unresolved ;
2033:
2034: >CROSS
2035: \ Header states 12dec92py
2036:
2037: \ : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
2038: X has? f83headerstring bigendian or [IF] 0 [ELSE] tcell 1- [THEN] Constant flag+
2039: : flag! ( w -- ) tlast @ flag+ + dup >r T c@ xor r> c! H ;
2040:
2041: VARIABLE ^imm
2042:
2043: \ !! should be target wordsize specific
2044: $80 constant alias-mask
2045: $40 constant immediate-mask
2046: $20 constant restrict-mask
2047:
2048: >TARGET
2049: : immediate immediate-mask flag!
2050: ^imm @ @ dup <imm> = IF drop EXIT THEN
2051: <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
2052: <imm> ^imm @ ! ;
2053: : restrict restrict-mask flag! ;
2054:
2055: : isdoer
2056: \G define a forth word as doer, this makes obviously only sence on
2057: \G forth processors such as the PSC1000
2058: <do:> last-header-ghost @ >magic ! ;
2059: >CROSS
2060:
2061: \ Target Header Creation 01nov92py
2062:
2063: : ht-lstring, ( addr count -- )
2064: dup T , H bounds ?DO I c@ T c, H LOOP ;
2065:
2066: >TARGET
2067: X has? f83headerstring [IF]
2068: : name, ( "name" -- ) bl word count ht-header, X cfalign ;
2069: [ELSE]
2070: : name, ( "name" -- ) bl word count ht-lstring, X cfalign ;
2071: [THEN]
2072: : view, ( -- ) ( dummy ) ;
2073: >CROSS
2074:
2075: \ Target Document Creation (goes to crossdoc.fd) 05jul95py
2076:
2077: s" ./doc/crossdoc.fd" r/w create-file throw value doc-file-id
2078: \ contains the file-id of the documentation file
2079:
2080: : T-\G ( -- )
2081: source >in @ /string doc-file-id write-line throw
2082: postpone \ ;
2083:
2084: Variable to-doc to-doc on
2085:
2086: : cross-doc-entry ( -- )
2087: to-doc @ tlast @ 0<> and \ not an anonymous (i.e. noname) header
2088: IF
2089: s" " doc-file-id write-line throw
2090: s" make-doc " doc-file-id write-file throw
2091:
2092: Last-Header-Ghost @ >ghostname doc-file-id write-file throw
2093: >in @
2094: [char] ( parse 2drop
2095: [char] ) parse doc-file-id write-file throw
2096: s" )" doc-file-id write-file throw
2097: [char] \ parse 2drop
2098: T-\G
2099: >in !
2100: THEN ;
2101:
2102: \ Target TAGS creation
2103:
2104: s" kernel.TAGS" r/w create-file throw value tag-file-id
2105: s" kernel.tags" r/w create-file throw value vi-tag-file-id
2106: \ contains the file-id of the tags file
2107:
2108: Create tag-beg 1 c, 7F c,
2109: Create tag-end 1 c, 01 c,
2110: Create tag-bof 1 c, 0C c,
2111: Create tag-tab 1 c, 09 c,
2112:
2113: 2variable last-loadfilename 0 0 last-loadfilename 2!
2114:
2115: : put-load-file-name ( -- )
2116: sourcefilename last-loadfilename 2@ d<>
2117: IF
2118: tag-bof count tag-file-id write-line throw
2119: sourcefilename 2dup
2120: tag-file-id write-file throw
2121: last-loadfilename 2!
2122: s" ,0" tag-file-id write-line throw
2123: THEN ;
2124:
2125: : cross-gnu-tag-entry ( -- )
2126: tlast @ 0<> \ not an anonymous (i.e. noname) header
2127: IF
2128: put-load-file-name
2129: source >in @ min tag-file-id write-file throw
2130: tag-beg count tag-file-id write-file throw
2131: Last-Header-Ghost @ >ghostname tag-file-id write-file throw
2132: tag-end count tag-file-id write-file throw
2133: base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw
2134: \ >in @ 0 <# #s [char] , hold #> tag-file-id write-line throw
2135: s" ,0" tag-file-id write-line throw
2136: base !
2137: THEN ;
2138:
2139: : cross-vi-tag-entry ( -- )
2140: tlast @ 0<> \ not an anonymous (i.e. noname) header
2141: IF
2142: sourcefilename vi-tag-file-id write-file throw
2143: tag-tab count vi-tag-file-id write-file throw
2144: Last-Header-Ghost @ >ghostname vi-tag-file-id write-file throw
2145: tag-tab count vi-tag-file-id write-file throw
2146: s" /^" vi-tag-file-id write-file throw
2147: source vi-tag-file-id write-file throw
2148: s" $/" vi-tag-file-id write-line throw
2149: THEN ;
2150:
2151: : cross-tag-entry ( -- )
2152: cross-gnu-tag-entry
2153: cross-vi-tag-entry ;
2154:
2155: \ Check for words
2156:
2157: Defer skip? ' false IS skip?
2158:
2159: : skipdef ( "name" -- )
2160: \G skip definition of an undefined word in undef-words and
2161: \G all-words mode
2162: Ghost dup forward?
2163: IF >magic <skip> swap !
2164: ELSE drop THEN ;
2165:
2166: : tdefined? ( "name" -- flag )
2167: Ghost undefined? 0= ;
2168:
2169: : defined2? ( "name" -- flag )
2170: \G return true for anything else than forward, even for <skip>
2171: \G that's what we want
2172: Ghost forward? 0= ;
2173:
2174: : forced? ( "name" -- flag )
2175: \G return ture if it is a foreced skip with defskip
2176: Ghost >magic @ <skip> = ;
2177:
2178: : needed? ( -- flag ) \ name
2179: \G returns a false flag when
2180: \G a word is not defined
2181: \G a forward reference exists
2182: \G so the definition is not skipped!
2183: bl word gfind
2184: IF dup undefined?
2185: nip
2186: 0=
2187: ELSE drop true THEN ;
2188:
2189: : doer? ( "name" -- 0 | addr ) \ name
2190: Ghost dup >magic @ <do:> =
2191: IF >link @ ELSE drop 0 THEN ;
2192:
2193: : skip-defs ( -- )
2194: BEGIN refill WHILE source -trailing nip 0= UNTIL THEN ;
2195:
2196: \ Target header creation
2197:
2198: Variable NoHeaderFlag
2199: NoHeaderFlag off
2200:
2201: : 0.r ( n1 n2 -- )
2202: base @ >r hex
2203: 0 swap <# 0 ?DO # LOOP #> type
2204: r> base ! ;
2205:
2206: : .sym ( adr len -- )
2207: \G escapes / and \ to produce sed output
2208: bounds
2209: DO I c@ dup
2210: CASE [char] / OF drop ." \/" ENDOF
2211: [char] \ OF drop ." \\" ENDOF
2212: dup OF emit ENDOF
2213: ENDCASE
2214: LOOP ;
2215:
2216: Defer setup-execution-semantics ' noop IS setup-execution-semantics
2217: 0 Value lastghost
2218:
2219: : (THeader ( "name" -- ghost )
2220: \ >in @ bl word count type 2 spaces >in !
2221: \ wordheaders will always be compiled to rom
2222: switchrom
2223: \ build header in target
2224: NoHeaderFlag @
2225: IF NoHeaderFlag off
2226: ELSE
2227: T align H view,
2228: tlast @ dup 0> IF tcell - THEN T A, H there tlast !
2229: 1 headers-named +! \ Statistic
2230: >in @ T name, H >in !
2231: THEN
2232: T cfalign here H tlastcfa !
2233: \ Old Symbol table sed-script
2234: \ >in @ cr ." sym:s/CFA=" there 4 0.r ." /" bl word count .sym ." /g" cr >in !
2235: HeaderGhost
2236: \ output symbol table to extra file
2237: dup >ghostname there symentry
2238: dup Last-Header-Ghost ! dup to lastghost
2239: dup >magic ^imm ! \ a pointer for immediate
2240: alias-mask flag!
2241: cross-doc-entry cross-tag-entry
2242: setup-execution-semantics
2243: ;
2244:
2245: \ this is the resolver information from ":"
2246: \ resolving is done by ";"
2247: Variable ;Resolve 1 cells allot
2248:
2249: : hereresolve ( ghost -- )
2250: there resolve 0 ;Resolve ! ;
2251:
2252: : Theader ( "name" -- ghost )
2253: (THeader dup hereresolve ;
2254:
2255: Variable aprim-nr -20 aprim-nr !
2256:
2257: : copy-execution-semantics ( ghost-from ghost-dest -- )
2258: >r
2259: dup >exec @ r@ >exec !
2260: dup >comp @ r@ >comp !
2261: dup >exec2 @ r@ >exec2 !
2262: dup >exec-compile @ r@ >exec-compile !
2263: dup >ghost-xt @ r@ >ghost-xt !
2264: dup >created @ r@ >created !
2265: rdrop drop ;
2266:
2267: >TARGET
2268:
2269: : Alias ( cfa -- ) \ name
2270: >in @ skip? IF 2drop EXIT THEN >in !
2271: (THeader ( S xt ghost )
2272: 2dup swap xt>ghost swap copy-execution-semantics
2273: over resolve T A, H alias-mask flag! ;
2274:
2275: Variable last-prim-ghost
2276: 0 last-prim-ghost !
2277:
2278: : asmprimname, ( ghost -- : name )
2279: dup last-prim-ghost !
2280: >r
2281: here bl word count string, r@ >asm-name !
2282: aprim-nr @ r> >asm-dummyaddr ! ;
2283:
2284: Defer setup-prim-semantics
2285:
2286: : mapprim ( "forthname" "asmlabel" -- )
2287: THeader -1 aprim-nr +! aprim-nr @ T A, H
2288: asmprimname,
2289: setup-prim-semantics ;
2290:
2291: : mapprim: ( "forthname" "asmlabel" -- )
2292: -1 aprim-nr +! aprim-nr @
2293: Ghost tuck swap resolve-noforwards <do:> swap tuck >magic !
2294: asmprimname, ;
2295:
2296: : Doer: ( cfa -- ) \ name
2297: >in @ skip? IF 2drop EXIT THEN >in !
2298: dup 0< s" prims" T $has? H 0= and
2299: IF
2300: .sourcepos ." needs doer: " >in @ bl word count type >in ! cr
2301: THEN
2302: Ghost
2303: tuck swap resolve-noforwards <do:> swap >magic ! ;
2304:
2305: Variable prim#
2306: : first-primitive ( n -- ) prim# ! ;
2307: : group 0 word drop prim# @ 1- -$200 and prim# ! ;
2308: : groupadd ( n -- ) drop ;
2309: : Primitive ( -- ) \ name
2310: >in @ skip? IF drop EXIT THEN >in !
2311: s" prims" T $has? H 0=
2312: IF
2313: .sourcepos ." needs prim: " >in @ bl word count type >in ! cr
2314: THEN
2315: prim# @ (THeader ( S xt ghost )
2316: ['] prim-resolved over >comp !
2317: dup >ghost-flags <primitive> set-flag
2318: over resolve-noforwards T A, H alias-mask flag!
2319: -1 prim# +! ;
2320: >CROSS
2321:
2322: \ Conditionals and Comments 11may93jaw
2323:
2324: \G saves the existing cond action, this is used for redefining in
2325: \G instant
2326: Variable cond-xt-old
2327:
2328: : cond-target ( -- )
2329: \G Compiles semantic of redefined cond into new one
2330: cond-xt-old @ compile, ; immediate restrict
2331:
2332: : ;Cond
2333: postpone ;
2334: swap ! ; immediate
2335:
2336: : Cond: ( "name" -- )
2337: \g defines a conditional or another word that must
2338: \g be executed directly while compiling
2339: \g these words have no interpretative semantics by default
2340: Ghost
2341: >exec-compile
2342: dup @ cond-xt-old !
2343: :NONAME ;
2344:
2345:
2346: : Comment ( -- )
2347: >in @ Ghost swap >in ! ' swap
2348: 2dup >exec-compile ! >exec ! ;
2349:
2350: Comment ( Comment \
2351:
2352: \ compile 10may93jaw
2353:
2354: : compile ( "name" -- ) \ name
2355: findghost
2356: dup >exec-compile @ ?dup
2357: IF nip compile,
2358: ELSE postpone literal postpone gexecute THEN ; immediate restrict
2359:
2360: >TARGET
2361:
2362: : ' ( -- xt )
2363: \G returns the target-cfa of a ghost
2364: bl word gfind 0= ABORT" CROSS: Ghost don't exists"
2365: g>xt ;
2366:
2367: \ FIXME: this works for the current use cases, but is not
2368: \ in all cases correct ;-)
2369: : comp' X ' 0 ;
2370:
2371: Cond: ['] T ' H alit, ;Cond
2372:
2373: >CROSS
2374:
2375: : [T']
2376: \ returns the target-cfa of a ghost, or compiles it as literal
2377: postpone [G']
2378: state @ IF postpone g>xt ELSE g>xt THEN ; immediate
2379:
2380: \ \ threading modell 13dec92py
2381: \ modularized 14jun97jaw
2382:
2383: T 2 cells H Value xt>body
2384:
2385: : (>body) ( cfa -- pfa )
2386: xt>body + ; ' (>body) plugin-of t>body
2387:
2388: : fillcfa ( usedcells -- )
2389: T cells H xt>body swap -
2390: assert1( dup 0 >= )
2391: 0 ?DO 0 X c, tchar +LOOP ;
2392:
2393: : (doer,) ( ghost -- )
2394: addr, 1 fillcfa ; ' (doer,) plugin-of doer,
2395:
2396: : (docol,) ( -- ) [G'] :docol (doer,) ; ' (docol,) plugin-of docol,
2397:
2398: ' NOOP plugin-of ca>native
2399:
2400: : (doprim,) ( -- )
2401: there xt>body + ca>native T a, H 1 fillcfa ; ' (doprim,) plugin-of doprim,
2402:
2403: : (doeshandler,) ( -- )
2404: T cfalign H [G'] :doesjump addr, T 0 , H ; ' (doeshandler,) plugin-of doeshandler,
2405:
2406: : (dodoes,) ( does-action-ghost -- )
2407: ]comp [G'] :dodoes addr, comp[
2408: addr,
2409: \ the relocator in the c engine, does not like the
2410: \ does-address to marked for relocation
2411: [ T e? ec H 0= [IF] ] T here H tcell - reloff [ [THEN] ]
2412: 2 fillcfa ; ' (dodoes,) plugin-of dodoes,
2413:
2414: : (dlit,) ( n -- ) compile lit td, ; ' (dlit,) plugin-of dlit,
2415:
2416: : (lit,) ( n -- ) s>d dlit, ; ' (lit,) plugin-of lit,
2417:
2418: \ if we dont produce relocatable code alit, defaults to lit, jaw
2419: \ this is just for convenience, so we don't have to define alit,
2420: \ seperately for embedded systems....
2421: T has? relocate H
2422: [IF]
2423: : (alit,) ( n -- ) compile lit T a, H ; ' (alit,) plugin-of alit,
2424: [ELSE]
2425: : (alit,) ( n -- ) lit, ; ' (alit,) plugin-of alit,
2426: [THEN]
2427:
2428: : (fini,) compile ;s ; ' (fini,) plugin-of fini,
2429:
2430: [IFUNDEF] (code)
2431: Defer (code)
2432: Defer (end-code)
2433: [THEN]
2434:
2435: >TARGET
2436: : Code
2437: defempty?
2438: (THeader ( ghost )
2439: ['] prim-resolved over >comp !
2440: there resolve-noforwards
2441:
2442: [ T e? prims H 0= [IF] T e? ITC H [ELSE] true [THEN] ] [IF]
2443: doprim,
2444: [THEN]
2445: depth (code) ;
2446:
2447: \ FIXME : no-compile -1 ABORT" this ghost is not for compilation" ;
2448:
2449: : Code:
2450: defempty?
2451: Ghost >r
2452: r@ >ghostname there symentry
2453: r@ there ca>native resolve-noforwards
2454: <do:> r@ >magic !
2455: r> drop
2456: depth (code) ;
2457:
2458: : end-code
2459: (end-code)
2460: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
2461: ELSE true ABORT" CROSS: Stack empty" THEN
2462: ;
2463:
2464: >CROSS
2465:
2466: \ tLiteral 12dec92py
2467:
2468: >TARGET
2469: Cond: \G T-\G ;Cond
2470:
2471: Cond: Literal ( n -- ) lit, ;Cond
2472: Cond: ALiteral ( n -- ) alit, ;Cond
2473:
2474: : Char ( "<char>" -- ) bl word char+ c@ ;
2475: Cond: [Char] ( "<char>" -- ) Char lit, ;Cond
2476:
2477: : (x#) ( adr len base -- )
2478: base @ >r base ! 0 0 name >number 2drop drop r> base ! ;
2479:
2480: : d# $0a (x#) ;
2481: : h# $010 (x#) ;
2482:
2483: Cond: d# $0a (x#) lit, ;Cond
2484: Cond: h# $010 (x#) lit, ;Cond
2485:
2486: tchar 1 = [IF]
2487: Cond: chars ;Cond
2488: [THEN]
2489:
2490: \ some special literals 27jan97jaw
2491:
2492: Cond: MAXU
2493: -1 s>d dlit,
2494: ;Cond
2495:
2496: tcell 2 = tcell 4 = or tcell 8 = or 0=
2497: [IF]
2498: .( Warning: MINI and MAXI may not work with this host) cr
2499: [THEN]
2500:
2501: Cond: MINI
2502: tcell 2 = IF $8000 ELSE $80000000 THEN 0
2503: tcell 8 = IF swap THEN dlit,
2504: ;Cond
2505:
2506: Cond: MAXI
2507: tcell 2 = IF $7fff ELSE $7fffffff THEN 0
2508: tcell 8 = IF drop -1 swap THEN dlit,
2509: ;Cond
2510:
2511: >CROSS
2512:
2513: \ Target compiling loop 12dec92py
2514: \ ">tib trick thrown out 10may93jaw
2515: \ number? defined at the top 11may93jaw
2516: \ replaced >in by save-input
2517:
2518: : discard 0 ?DO drop LOOP ;
2519:
2520: \ compiled word might leave items on stack!
2521: : tcom ( x1 .. xn n name -- )
2522: \ dup count type space
2523: gfind
2524: IF >r ( discard saved input state ) discard r>
2525: dup >exec-compile @ ?dup
2526: IF nip execute-exec-compile ELSE gexecute THEN
2527: EXIT
2528: THEN
2529: number? dup
2530: IF 0> IF swap lit, THEN lit, discard
2531: ELSE 2drop restore-input throw Ghost gexecute THEN ;
2532:
2533: \ : ; DOES> 13dec92py
2534: \ ] 9may93py/jaw
2535:
2536: >CROSS
2537:
2538: : compiling-state ( -- )
2539: \G set states to compililng
2540: Compiling comp-state !
2541: \ if we have a state in target, change it with the compile state
2542: [G'] state dup undefined? 0=
2543: IF >ghost-xt @ execute X on ELSE drop THEN ;
2544:
2545: : interpreting-state ( -- )
2546: \G set states to interpreting
2547: \ if target has a state variable, change it according to our state
2548: [G'] state dup undefined? 0=
2549: IF >ghost-xt @ execute X off ELSE drop THEN
2550: Interpreting comp-state ! ;
2551:
2552: >TARGET
2553:
2554: : ]
2555: compiling-state
2556: BEGIN
2557: BEGIN save-input bl word
2558: dup c@ 0= WHILE drop discard refill 0=
2559: ABORT" CROSS: End of file while target compiling"
2560: REPEAT
2561: tcom
2562: compiling? 0=
2563: UNTIL ;
2564:
2565: \ by the way: defining a second interpreter (a compiler-)loop
2566: \ is not allowed if a system should be ans conform
2567:
2568: : (:) ( ghost -- )
2569: \ common factor of : and :noname. Prepare ;Resolve and start definition
2570: ;Resolve ! there ;Resolve cell+ !
2571: docol, ]comp colon-start depth T ] H ;
2572:
2573: : : ( -- colon-sys ) \ Name
2574: defempty?
2575: constflag off \ don't let this flag work over colon defs
2576: \ just to go sure nothing unwanted happens
2577: >in @ skip? IF drop skip-defs EXIT THEN >in !
2578: (THeader (:) ;
2579:
2580: : :noname ( -- colon-sys )
2581: switchrom X cfalign there
2582: \ define a nameless ghost
2583: here ghostheader dup last-header-ghost ! dup to lastghost
2584: (:) ;
2585:
2586: Cond: EXIT ( -- ) compile ;S ;Cond
2587:
2588: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
2589:
2590: >CROSS
2591: : LastXT ;Resolve @ 0= abort" CROSS: no definition for LastXT"
2592: ;Resolve cell+ @ ;
2593:
2594: >TARGET
2595:
2596: Cond: recurse ( -- ) Last-Header-Ghost @ gexecute ;Cond
2597:
2598: Cond: ; ( -- )
2599: depth ?dup
2600: IF 1- <> ABORT" CROSS: Stack changed"
2601: ELSE true ABORT" CROSS: Stack empty"
2602: THEN
2603: colon-end
2604: fini,
2605: comp[
2606: ;Resolve @
2607: IF ['] colon-resolved ;Resolve @ >comp !
2608: ;Resolve @ ;Resolve cell+ @ resolve
2609: THEN
2610: interpreting-state
2611: ;Cond
2612:
2613: Cond: [ ( -- ) interpreting-state ;Cond
2614:
2615: >CROSS
2616:
2617: 0 Value created
2618:
2619: : !does ( does-action -- )
2620: tlastcfa @ [G'] :dovar killref
2621: >space here >r ghostheader space>
2622: ['] colon-resolved r@ >comp !
2623: r@ created >do:ghost ! r@ swap resolve
2624: r> tlastcfa @ >tempdp dodoes, tempdp> ;
2625:
2626: Defer instant-interpret-does>-hook ' noop IS instant-interpret-does>-hook
2627:
2628: T has? peephole H [IF]
2629: : does-resolved ( ghost -- )
2630: compile does-exec g>xt T a, H ;
2631: [ELSE]
2632: : does-resolved ( ghost -- )
2633: g>xt T a, H ;
2634: [THEN]
2635:
2636: : resolve-does>-part ( -- )
2637: \ resolve words made by builders
2638: Last-Header-Ghost @ >do:ghost @ ?dup
2639: IF there resolve THEN ;
2640:
2641: >TARGET
2642: Cond: DOES>
2643: T here H [ T has? peephole H [IF] ] 5 [ [ELSE] ] 4 [ [THEN] ] T cells
2644: H + alit, compile (does>2) compile ;s
2645: doeshandler, resolve-does>-part
2646: ;Cond
2647:
2648: : DOES>
2649: ['] does-resolved created >comp !
2650: switchrom doeshandler, T here H !does
2651: instant-interpret-does>-hook
2652: depth T ] H ;
2653:
2654: >CROSS
2655: \ Creation 01nov92py
2656:
2657: \ Builder 11may93jaw
2658:
2659: 0 Value built
2660:
2661: : Builder ( Create-xt do-ghost "name" -- )
2662: \ builds up a builder in current vocabulary
2663: \ create-xt is executed when word is interpreted
2664: \ do:-xt is executed when the created word from builder is executed
2665: \ for do:-xt an additional entry after the normal ghost-entrys is used
2666:
2667: ghost to built
2668: built >created @ 0= IF
2669: built >created on
2670: THEN ;
2671:
2672: : gdoes, ( ghost -- )
2673: \ makes the codefield for a word that is built
2674: >do:ghost @ dup undefined? 0=
2675: IF
2676: dup >magic @ <do:> =
2677: IF doer,
2678: ELSE dodoes,
2679: THEN
2680: EXIT
2681: THEN
2682: \ compile :dodoes gexecute
2683: \ T here H tcell - reloff
2684: 2 refered
2685: 0 fillcfa
2686: ;
2687:
2688: : takeover-x-semantics ( S constructor-ghost new-ghost -- )
2689: \g stores execution semantic and compilation semantic in the built word
2690: swap >do:ghost @ 2dup swap >do:ghost !
2691: \ we use the >exec2 field for the semantic of a created word,
2692: \ using exec or exec2 makes no difference for normal cross-compilation
2693: \ but is usefull for instant where the exec field is already
2694: \ defined (e.g. Vocabularies)
2695: 2dup >exec @ swap >exec2 !
2696: >comp @ swap >comp ! ;
2697:
2698: 0 Value createhere
2699:
2700: : create-resolve ( -- )
2701: created createhere resolve 0 ;Resolve ! ;
2702: : create-resolve-immediate ( -- )
2703: create-resolve T immediate H ;
2704:
2705: : TCreate ( <name> -- )
2706: create-forward-warn
2707: IF ['] reswarn-forward IS resolve-warning THEN
2708: executed-ghost @ (Theader
2709: dup >created on dup to created
2710: 2dup takeover-x-semantics
2711: there to createhere drop gdoes, ;
2712:
2713: : RTCreate ( <name> -- )
2714: \ creates a new word with code-field in ram
2715: create-forward-warn
2716: IF ['] reswarn-forward IS resolve-warning THEN
2717: \ make Alias
2718: executed-ghost @ (THeader
2719: dup >created on dup to created
2720: 2dup takeover-x-semantics
2721: there 0 T a, H alias-mask flag!
2722: \ store poiter to code-field
2723: switchram T cfalign H
2724: there swap T ! H
2725: there tlastcfa !
2726: there to createhere drop gdoes, ;
2727:
2728: : Build: ( -- [xt] [colon-sys] )
2729: :noname postpone TCreate ;
2730:
2731: : BuildSmart: ( -- [xt] [colon-sys] )
2732: :noname
2733: [ T has? rom H [IF] ]
2734: postpone RTCreate
2735: [ [ELSE] ]
2736: postpone TCreate
2737: [ [THEN] ] ;
2738:
2739: : ;Build
2740: postpone create-resolve postpone ; built >exec ! ; immediate
2741:
2742: : ;Build-immediate
2743: postpone create-resolve-immediate
2744: postpone ; built >exec ! ; immediate
2745:
2746: : gdoes> ( ghost -- addr flag )
2747: executed-ghost @ g>body ;
2748:
2749: \ DO: ;DO 11may93jaw
2750:
2751: : do:ghost! ( ghost -- ) built >do:ghost ! ;
2752: : doexec! ( xt -- ) built >do:ghost @ >exec ! ;
2753:
2754: : DO: ( -- [xt] [colon-sys] )
2755: here ghostheader do:ghost!
2756: :noname postpone gdoes> ;
2757:
2758: : by: ( -- [xt] [colon-sys] ) \ name
2759: Ghost do:ghost!
2760: :noname postpone gdoes> ;
2761:
2762: : ;DO ( [xt] [colon-sys] -- )
2763: postpone ; doexec! ; immediate
2764:
2765: : by ( -- ) \ Name
2766: Ghost >do:ghost @ do:ghost! ;
2767:
2768: : compile: ( --[xt] [colon-sys] )
2769: \G defines a compile time action for created words
2770: \G by this builder
2771: :noname ;
2772:
2773: : ;compile ( [xt] [colon-sys] -- )
2774: postpone ; built >do:ghost @ >comp ! ; immediate
2775:
2776: \ Variables and Constants 05dec92py
2777:
2778: Builder (Constant)
2779: Build: ( n -- ) ;Build
2780: by: :docon ( target-body-addr -- n ) T @ H ;DO
2781:
2782: Builder Constant
2783: Build: ( n -- ) T , H ;Build
2784: by (Constant)
2785:
2786: Builder AConstant
2787: Build: ( n -- ) T A, H ;Build
2788: by (Constant)
2789:
2790: Builder 2Constant
2791: Build: ( d -- ) T , , H ;Build
2792: DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO
2793:
2794: Builder Create
2795: BuildSmart: ;Build
2796: by: :dovar ( target-body-addr -- addr ) ;DO
2797:
2798: Builder Variable
2799: T has? rom H [IF]
2800: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 , H ( switchrom ) ;Build
2801: by (Constant)
2802: [ELSE]
2803: Build: T 0 , H ;Build
2804: by Create
2805: [THEN]
2806:
2807: Builder 2Variable
2808: T has? rom H [IF]
2809: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 , 0 , H ( switchrom ) ;Build
2810: by (Constant)
2811: [ELSE]
2812: Build: T 0 , 0 , H ;Build
2813: by Create
2814: [THEN]
2815:
2816: Builder AVariable
2817: T has? rom H [IF]
2818: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 A, H ( switchrom ) ;Build
2819: by (Constant)
2820: [ELSE]
2821: Build: T 0 A, H ;Build
2822: by Create
2823: [THEN]
2824:
2825: \ User variables 04may94py
2826:
2827: : tup@ user-region >rstart @ ;
2828:
2829: \ Variable tup 0 tup !
2830: \ Variable tudp 0 tudp !
2831:
2832: : u, ( n -- udp )
2833: current-region >r user-region activate
2834: X here swap X , tup@ -
2835: r> activate ;
2836:
2837: : au, ( n -- udp )
2838: current-region >r user-region activate
2839: X here swap X a, tup@ -
2840: r> activate ;
2841:
2842: T has? no-userspace H [IF]
2843:
2844: : buildby
2845: ghost >exec @ built >exec ! ;
2846:
2847: Builder User
2848: buildby Variable
2849: by Variable
2850:
2851: Builder 2User
2852: buildby 2Variable
2853: by 2Variable
2854:
2855: Builder AUser
2856: buildby AVariable
2857: by AVariable
2858:
2859: [ELSE]
2860:
2861: Builder User
2862: Build: 0 u, X , ;Build
2863: by: :douser ( ghost -- up-addr ) X @ tup@ + ;DO
2864:
2865: Builder 2User
2866: Build: 0 u, X , 0 u, drop ;Build
2867: by User
2868:
2869: Builder AUser
2870: Build: 0 au, X , ;Build
2871: by User
2872:
2873: [THEN]
2874:
2875: T has? rom H [IF]
2876: Builder (Value)
2877: Build: ( n -- ) ;Build
2878: by: :dovalue ( target-body-addr -- n ) T @ @ H ;DO
2879:
2880: Builder Value
2881: Build: T here 0 A, H switchram T align here swap ! , H ;Build
2882: by (Value)
2883:
2884: Builder AValue
2885: Build: T here 0 A, H switchram T align here swap ! A, H ;Build
2886: by (Value)
2887: [ELSE]
2888: Builder (Value)
2889: Build: ( n -- ) ;Build
2890: by: :dovalue ( target-body-addr -- n ) T @ H ;DO
2891:
2892: Builder Value
2893: BuildSmart: T , H ;Build
2894: by (Value)
2895:
2896: Builder AValue
2897: BuildSmart: T A, H ;Build
2898: by (Value)
2899: [THEN]
2900:
2901: Defer texecute
2902:
2903: Builder Defer
2904: T has? rom H [IF]
2905: Build: ( -- ) T here 0 A, H switchram T align here swap ! H [T'] noop T A, H ( switchrom ) ;Build
2906: by: :dodefer ( ghost -- ) X @ X @ texecute ;DO
2907: [ELSE]
2908: BuildSmart: ( -- ) [T'] noop T A, H ;Build
2909: by: :dodefer ( ghost -- ) X @ texecute ;DO
2910: [THEN]
2911:
2912: Builder interpret/compile:
2913: Build: ( inter comp -- ) swap T A, A, H ;Build-immediate
2914: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
2915:
2916: \ Sturctures 23feb95py
2917:
2918: : nalign ( addr1 n -- addr2 )
2919: \ addr2 is the aligned version of addr1 wrt the alignment size n
2920: 1- tuck + swap invert and ;
2921:
2922:
2923: Builder (Field)
2924: Build: ;Build
2925: by: :dofield T @ H + ;DO
2926:
2927: Builder Field
2928: Build: ( align1 offset1 align size "name" -- align2 offset2 )
2929: rot dup T , H ( align1 align size offset1 )
2930: + >r nalign r> ;Build
2931: by (Field)
2932:
2933: >TARGET
2934: : struct T 1 chars 0 H ;
2935: : end-struct T 2Constant H ;
2936:
2937: : cell% ( n -- size align )
2938: T 1 cells H dup ;
2939: >CROSS
2940:
2941: \ Input-Methods 01py
2942:
2943: Builder input-method
2944: Build: ( m v -- m' v ) dup T , cell+ H ;Build
2945: DO: abort" Not in cross mode" ;DO
2946:
2947: Builder input-var
2948: Build: ( m v size -- m v' ) over T , H + ;Build
2949: DO: abort" Not in cross mode" ;DO
2950:
2951: \ Peephole optimization 05sep01jaw
2952:
2953: \ this section defines different compilation
2954: \ actions for created words
2955: \ this will help the peephole optimizer
2956: \ I (jaw) took this from bernds latest cross-compiler
2957: \ changes but seperated it from the original
2958: \ Builder words. The final plan is to put this
2959: \ into a seperate file, together with the peephole
2960: \ optimizer for cross
2961:
2962:
2963: T has? peephole H [IF]
2964:
2965: \ .( loading peephole optimization) cr
2966:
2967: >CROSS
2968:
2969: : (callc) compile call T >body a, H ; ' (callc) plugin-of colon,
2970: : (callcm) T here 0 a, 0 a, H ; ' (callcm) plugin-of colonmark,
2971: : (call-res) >tempdp resolved gexecute tempdp> drop ;
2972: ' (call-res) plugin-of colon-resolve
2973: : (pprim) dup 0< IF $4000 - ELSE
2974: cr ." wrong usage of (prim) "
2975: dup gdiscover IF .ghost ELSE . THEN cr -1 throw THEN
2976: T a, H ; ' (pprim) plugin-of prim,
2977:
2978: \ if we want this, we have to spilt aconstant
2979: \ and constant!!
2980: \ Builder (Constant)
2981: \ compile: g>body X @ lit, ;compile
2982:
2983: Builder (Constant)
2984: compile: g>body compile lit@ T a, H ;compile
2985:
2986: Builder (Value)
2987: compile: g>body compile lit@ T a, H ;compile
2988:
2989: \ this changes also Variable, AVariable and 2Variable
2990: Builder Create
2991: compile: g>body alit, ;compile
2992:
2993: Builder User
2994: compile: g>body compile useraddr T @ , H ;compile
2995:
2996: Builder Defer
2997: compile: g>body compile lit-perform T A, H ;compile
2998:
2999: Builder (Field)
3000: compile: g>body T @ H compile lit+ T , H ;compile
3001:
3002: Builder interpret/compile:
3003: compile: does-resolved ;compile
3004:
3005: Builder input-method
3006: compile: does-resolved ;compile
3007:
3008: Builder input-var
3009: compile: does-resolved ;compile
3010:
3011: [THEN]
3012:
3013: \ structural conditionals 17dec92py
3014:
3015: >CROSS
3016: : (ncontrols?) ( n -- )
3017: \g We expect n open control structures
3018: depth over u<=
3019: ABORT" CROSS: unstructured, stack underflow"
3020: 0 ?DO I pick 0=
3021: ABORT" CROSS: unstructured"
3022: LOOP ; ' (ncontrols?) plugin-of ncontrols?
3023:
3024: \ : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
3025: \ : sys? ( sys -- sys ) dup 0= ?struc ;
3026:
3027: : >mark ( -- sys ) T here ( dup ." M" hex. ) 0 , H ;
3028:
3029: X has? abranch [IF]
3030: : branchoffset ( src dest -- ) drop ;
3031: : offset, ( n -- ) X A, ;
3032: [ELSE]
3033: : branchoffset ( src dest -- ) - tchar / ; \ ?? jaw
3034: : offset, ( n -- ) X , ;
3035: [THEN]
3036:
3037: :noname compile branch X here branchoffset offset, ;
3038: IS branch, ( target-addr -- )
3039: :noname compile ?branch X here branchoffset offset, ;
3040: IS ?branch, ( target-addr -- )
3041: :noname compile branch T here 0 H offset, ;
3042: IS branchmark, ( -- branchtoken )
3043: :noname compile ?branch T here 0 H offset, ;
3044: IS ?branchmark, ( -- branchtoken )
3045: :noname T here 0 H offset, ;
3046: IS ?domark, ( -- branchtoken )
3047: :noname dup X @ ?struc X here over branchoffset swap X ! ;
3048: IS branchtoresolve, ( branchtoken -- )
3049: :noname branchto, X here ;
3050: IS branchtomark, ( -- target-addr )
3051:
3052: >TARGET
3053:
3054: \ Structural Conditionals 12dec92py
3055:
3056: \ CLEANUP Cond: BUT sys? swap ;Cond
3057: \ CLEANUP Cond: YET sys? dup ;Cond
3058:
3059: >CROSS
3060:
3061: Variable tleavings 0 tleavings !
3062:
3063: : (done) ( do-addr -- )
3064: \G resolve branches of leave and ?leave and ?do
3065: \G do-addr is the address of the beginning of our
3066: \G loop so we can take care of nested loops
3067: tleavings @
3068: BEGIN dup
3069: WHILE
3070: >r dup r@ cell+ @ \ address of branch
3071: u> 0= \ lower than DO?
3072: WHILE
3073: r@ 2 cells + @ \ branch token
3074: branchtoresolve,
3075: r@ @ r> free throw
3076: REPEAT r> THEN
3077: tleavings ! drop ;
3078:
3079: >TARGET
3080:
3081: \ What for? ANS? JAW Cond: DONE ( addr -- ) (done) ;Cond
3082:
3083: >CROSS
3084: : (leave) ( branchtoken -- )
3085: 3 cells allocate throw >r
3086: T here H r@ cell+ !
3087: r@ 2 cells + !
3088: tleavings @ r@ !
3089: r> tleavings ! ;
3090: >TARGET
3091:
3092: : (leave,) ( -- )
3093: branchmark, (leave) ; ' (leave,) plugin-of leave,
3094:
3095: : (?leave,) ( -- )
3096: compile 0= ?branchmark, (leave) ; ' (?leave,) plugin-of ?leave,
3097:
3098: Cond: LEAVE leave, ;Cond
3099: Cond: ?LEAVE ?leave, ;Cond
3100:
3101: >CROSS
3102: \ !!JW ToDo : Move to general tools section
3103:
3104: : to1 ( x1 x2 xn n -- addr )
3105: \G packs n stack elements in am allocated memory region
3106: dup dup 1+ cells allocate throw dup >r swap 1+
3107: 0 DO tuck ! cell+ LOOP
3108: drop r> ;
3109:
3110: : 1to ( addr -- x1 x2 xn )
3111: \G unpacks the elements saved by to1
3112: dup @ swap over cells + swap
3113: 0 DO dup @ swap 1 cells - LOOP
3114: free throw ;
3115:
3116: : loop] ( target-addr -- )
3117: branchto,
3118: dup X here branchoffset offset,
3119: tcell - (done) ;
3120:
3121: : skiploop] ?dup IF branchto, branchtoresolve, THEN ;
3122:
3123: >TARGET
3124:
3125: \ Structural Conditionals 12dec92py
3126:
3127: : (cs-swap) ( x1 x2 -- x2 x1 )
3128: swap ; ' (cs-swap) plugin-of cs-swap
3129:
3130: : (ahead,) branchmark, ; ' (ahead,) plugin-of ahead,
3131:
3132: : (if,) ?branchmark, ; ' (if,) plugin-of if,
3133:
3134: : (then,) branchto, branchtoresolve, ; ' (then,) plugin-of then,
3135:
3136: : (else,) ( ahead ) branchmark,
3137: swap
3138: ( then ) branchto, branchtoresolve, ; ' (else,) plugin-of else,
3139:
3140: : (begin,) branchtomark, ; ' (begin,) plugin-of begin,
3141:
3142: : (while,) ( if ) ?branchmark,
3143: swap ; ' (while,) plugin-of while,
3144:
3145: : (again,) branch, ; ' (again,) plugin-of again,
3146:
3147: : (until,) ?branch, ; ' (until,) plugin-of until,
3148:
3149: : (repeat,) ( again ) branch,
3150: ( then ) branchto, branchtoresolve, ; ' (repeat,) plugin-of repeat,
3151:
3152: : (case,) ( -- n )
3153: 0 ; ' (case,) plugin-of case,
3154:
3155: : (of,) ( n -- x1 n )
3156: 1+ >r
3157: compile over compile =
3158: if, compile drop r> ; ' (of,) plugin-of of,
3159:
3160: : (endof,) ( x1 n -- x2 n )
3161: >r 1 ncontrols? else, r> ; ' (endof,) plugin-of endof,
3162:
3163: : (endcase,) ( x1 .. xn n -- )
3164: compile drop 0 ?DO 1 ncontrols? then, LOOP ; ' (endcase,) plugin-of endcase,
3165:
3166: >TARGET
3167: Cond: AHEAD ahead, ;Cond
3168: Cond: IF if, ;Cond
3169: Cond: THEN 1 ncontrols? then, ;Cond
3170: Cond: ENDIF 1 ncontrols? then, ;Cond
3171: Cond: ELSE 1 ncontrols? else, ;Cond
3172:
3173: Cond: BEGIN begin, ;Cond
3174: Cond: WHILE 1 ncontrols? while, ;Cond
3175: Cond: AGAIN 1 ncontrols? again, ;Cond
3176: Cond: UNTIL 1 ncontrols? until, ;Cond
3177: Cond: REPEAT 2 ncontrols? repeat, ;Cond
3178:
3179: Cond: CASE case, ;Cond
3180: Cond: OF of, ;Cond
3181: Cond: ENDOF endof, ;Cond
3182: Cond: ENDCASE endcase, ;Cond
3183:
3184: \ Structural Conditionals 12dec92py
3185:
3186: : (do,) ( -- target-addr )
3187: \ ?? i think 0 is too much! jaw
3188: 0 compile (do)
3189: branchtomark, 2 to1 ; ' (do,) plugin-of do,
3190:
3191: \ alternative for if no ?do
3192: \ : (do,)
3193: \ compile 2dup compile = compile IF
3194: \ compile 2drop compile ELSE
3195: \ compile (do) branchtomark, 2 to1 ;
3196:
3197: : (?do,) ( -- target-addr )
3198: 0 compile (?do) ?domark, (leave)
3199: branchtomark, 2 to1 ; ' (?do,) plugin-of ?do,
3200:
3201: : (for,) ( -- target-addr )
3202: compile (for) branchtomark, ; ' (for,) plugin-of for,
3203:
3204: : (loop,) ( target-addr -- )
3205: 1to compile (loop) loop]
3206: compile unloop skiploop] ; ' (loop,) plugin-of loop,
3207:
3208: : (+loop,) ( target-addr -- )
3209: 1to compile (+loop) loop]
3210: compile unloop skiploop] ; ' (+loop,) plugin-of +loop,
3211:
3212: : (next,)
3213: compile (next) loop] compile unloop ; ' (next,) plugin-of next,
3214:
3215: Cond: DO do, ;Cond
3216: Cond: ?DO ?do, ;Cond
3217: Cond: FOR for, ;Cond
3218:
3219: Cond: LOOP 1 ncontrols? loop, ;Cond
3220: Cond: +LOOP 1 ncontrols? +loop, ;Cond
3221: Cond: NEXT 1 ncontrols? next, ;Cond
3222:
3223: \ String words 23feb93py
3224:
3225: : ," [char] " parse ht-string, X align ;
3226:
3227: X has? control-rack [IF]
3228: Cond: ." compile (.") T ," H ;Cond
3229: Cond: S" compile (S") T ," H ;Cond
3230: Cond: C" compile (C") T ," H ;Cond
3231: Cond: ABORT" compile (ABORT") T ," H ;Cond
3232: [ELSE]
3233: Cond: ." '" parse tuck 2>r ahead, there 2r> ht-mem, X align
3234: >r then, r> compile ALiteral compile Literal compile type ;Cond
3235: Cond: S" '" parse tuck 2>r ahead, there 2r> ht-mem, X align
3236: >r then, r> compile ALiteral compile Literal ;Cond
3237: Cond: C" ahead, there [char] " parse ht-string, X align
3238: >r then, r> compile ALiteral ;Cond
3239: Cond: ABORT" if, ahead, there [char] " parse ht-string, X align
3240: >r then, r> compile ALiteral compile c(abort") then, ;Cond
3241: [THEN]
3242:
3243: X has? rom [IF]
3244: Cond: IS T ' >body @ H compile ALiteral compile ! ;Cond
3245: : IS T >address ' >body @ ! H ;
3246: Cond: TO T ' >body @ H compile ALiteral compile ! ;Cond
3247: : TO T ' >body @ ! H ;
3248: Cond: CTO T ' >body H compile ALiteral compile ! ;Cond
3249: : CTO T ' >body ! H ;
3250: [ELSE]
3251: Cond: IS T ' >body H compile ALiteral compile ! ;Cond
3252: : IS T >address ' >body ! H ;
3253: Cond: TO T ' >body H compile ALiteral compile ! ;Cond
3254: : TO T ' >body ! H ;
3255: [THEN]
3256:
3257: Cond: defers T ' >body @ compile, H ;Cond
3258:
3259: \ LINKED ERR" ENV" 2ENV" 18may93jaw
3260:
3261: \ linked list primitive
3262: : linked X here over X @ X A, swap X ! ;
3263: : chained T linked A, H ;
3264:
3265: : err" s" ErrLink linked" evaluate T , H
3266: [char] " parse ht-string, X align ;
3267:
3268: : env" [char] " parse s" EnvLink linked" evaluate
3269: ht-string, X align X , ;
3270:
3271: : 2env" [char] " parse s" EnvLink linked" evaluate
3272: here >r ht-string, X align X , X ,
3273: r> dup T c@ H 80 and swap T c! H ;
3274:
3275: \ compile must be last 22feb93py
3276:
3277: Cond: [compile] ( -- ) \ name
3278: \g For immediate words, works even if forward reference
3279: bl word gfind 0= ABORT" CROSS: Can't compile"
3280: (gexecute) ;Cond
3281:
3282: Cond: postpone ( -- ) \ name
3283: bl word gfind 0= ABORT" CROSS: Can't compile"
3284: dup >magic @ <fwd> =
3285: ABORT" CROSS: Can't postpone on forward declaration"
3286: dup >magic @ <imm> =
3287: IF (gexecute)
3288: ELSE >link @ alit, compile compile, THEN ;Cond
3289:
3290: \ save-cross 17mar93py
3291:
3292: hex
3293:
3294: >CROSS
3295: Create magic s" Gforth3x" here over allot swap move
3296:
3297: bigendian 1+ \ strangely, in magic big=0, little=1
3298: tcell 1 = 0 and or
3299: tcell 2 = 2 and or
3300: tcell 4 = 4 and or
3301: tcell 8 = 6 and or
3302: tchar 1 = 00 and or
3303: tchar 2 = 28 and or
3304: tchar 4 = 50 and or
3305: tchar 8 = 78 and or
3306: magic 7 + c!
3307:
3308: : save-cross ( "image-name" "binary-name" -- )
3309: .regions \ s" ec" X $has? IF .regions THEN
3310: bl parse ." Saving to " 2dup type cr
3311: w/o bin create-file throw >r
3312: s" header" X $has? IF
3313: s" #! " r@ write-file throw
3314: bl parse r@ write-file throw
3315: s" --image-file" r@ write-file throw
3316: #lf r@ emit-file throw
3317: r@ dup file-position throw drop 8 mod 8 swap ( file-id limit index )
3318: ?do
3319: bl over emit-file throw
3320: loop
3321: drop
3322: magic 8 r@ write-file throw \ write magic
3323: ELSE
3324: bl parse 2drop
3325: THEN
3326: >rom dictionary >rmem @ there
3327: s" rom" X $has? IF dictionary >rstart @ - THEN
3328: r@ write-file throw \ write image
3329: s" relocate" X $has? IF
3330: dictionary >rbm @ there 1- tcell>bit rshift 1+
3331: r@ write-file throw \ write tags
3332: THEN
3333: r> close-file throw ;
3334:
3335: : save-region ( addr len -- )
3336: bl parse w/o bin create-file throw >r
3337: swap >image swap r@ write-file throw
3338: r> close-file throw ;
3339:
3340: \ save-asm-region 29aug01jaw
3341:
3342: Variable name-ptr
3343: Create name-buf 200 chars allot
3344: : init-name-buf name-buf name-ptr ! ;
3345: : nb, name-ptr @ c! 1 chars name-ptr +! ;
3346: : $nb, ( adr len -- ) bounds ?DO I c@ nb, LOOP ;
3347: : @nb name-ptr @ name-buf tuck - ;
3348:
3349: \ stores a usefull string representation of the character
3350: \ in the name buffer
3351: : name-char, ( c -- )
3352: dup 'a 'z 1+ within IF nb, EXIT THEN
3353: dup 'A 'Z 1+ within IF $20 + nb, EXIT THEN
3354: dup '0 '9 1+ within IF nb, EXIT THEN
3355: CASE '+ OF s" _PLUS" $nb, ENDOF
3356: '- OF s" _MINUS" $nb, ENDOF
3357: '* OF s" _STAR" $nb, ENDOF
3358: '/ OF s" _SLASH" $nb, ENDOF
3359: '' OF s" _TICK" $nb, ENDOF
3360: '( OF s" _OPAREN" $nb, ENDOF
3361: ') OF s" _CPAREN" $nb, ENDOF
3362: '[ OF s" _OBRACKET" $nb, ENDOF
3363: '] OF s" _CBRACKET" $nb, ENDOF
3364: '! OF s" _STORE" $nb, ENDOF
3365: '@ OF s" _FETCH" $nb, ENDOF
3366: '> OF s" _GREATER" $nb, ENDOF
3367: '< OF s" _LESS" $nb, ENDOF
3368: '= OF s" _EQUAL" $nb, ENDOF
3369: '# OF s" _HASH" $nb, ENDOF
3370: '? OF s" _QUEST" $nb, ENDOF
3371: ': OF s" _COL" $nb, ENDOF
3372: '; OF s" _SEMICOL" $nb, ENDOF
3373: ', OF s" _COMMA" $nb, ENDOF
3374: '. OF s" _DOT" $nb, ENDOF
3375: '" OF s" _DQUOT" $nb, ENDOF
3376: dup
3377: base @ >r hex s>d <# #s 'X hold '_ hold #> $nb, r> base !
3378: ENDCASE ;
3379:
3380: : label-from-ghostname ( ghost -- addr len )
3381: dup >ghostname init-name-buf 'L nb, bounds
3382: ?DO I c@ name-char, LOOP
3383: \ we add the address to a name to make in unique
3384: \ because one name may appear more then once
3385: \ there are names (e.g. boot) that may be reference from other
3386: \ assembler source files, so we declare them as unique
3387: \ and don't add the address suffix
3388: dup >ghost-flags @ <unique> and 0=
3389: IF s" __" $nb, >link @ base @ >r hex 0 <# #s 'L hold #> r> base ! $nb,
3390: ELSE drop
3391: THEN
3392: @nb ;
3393:
3394: \ FIXME why disabled?!
3395: : label-from-ghostnameXX ( ghost -- addr len )
3396: \ same as (label-from-ghostname) but caches generated names
3397: dup >asm-name @ ?dup IF nip count EXIT THEN
3398: \ dup >r (label-from-ghostname) 2dup
3399: align here >r string, align
3400: r> r> >asm-name ! ;
3401:
3402: : primghostdiscover ( xt -- ghost true | xt false )
3403: dup 0= IF false EXIT THEN
3404: >r last-prim-ghost
3405: BEGIN @ dup
3406: WHILE dup >asm-dummyaddr @ r@ =
3407: IF rdrop true EXIT THEN
3408: REPEAT
3409: drop r> false ;
3410:
3411: : gdiscover2 ( xt -- ghost true | xt false )
3412: dup taddr>region 0= IF false EXIT THEN
3413: dup (>regiontype) @ dup 0= IF drop false EXIT THEN
3414: addr-xt-ghost @ dup 0= IF drop false EXIT THEN
3415: nip true ;
3416: \ dup >ghost-name @ IF nip true ELSE drop false THEN ;
3417:
3418: \ generates a label name for the target address
3419: : generate-label-name ( taddr -- addr len )
3420: gdiscover2
3421: IF dup >magic @ <do:> =
3422: IF >asm-name @ count EXIT THEN
3423: label-from-ghostname
3424: ELSE
3425: primghostdiscover
3426: IF >asm-name @ count
3427: ELSE base @ >r hex 0 <# #s 'L hold #> r> base !
3428: THEN
3429: THEN ;
3430:
3431: Variable outfile-fd
3432:
3433: : $out ( adr len -- ) outfile-fd @ write-file throw ;
3434: : nlout newline $out ;
3435: : .ux ( n -- )
3436: base @ hex swap 0 <# #S #> $out base ! ;
3437:
3438: : save-asm-region-part-aligned ( taddr len -- 'taddr 'len )
3439: dup cell/ 0
3440: ?DO nlout s" .word " $out over @relbit
3441: IF over X @ generate-label-name $out
3442: ELSE over X @ s" 0x0" $out .ux
3443: THEN
3444: tcell /string
3445: LOOP ;
3446:
3447: : print-bytes ( taddr len n -- taddr' len' )
3448: over min dup 0>
3449: IF nlout s" .byte " $out 0
3450: ?DO I 0> IF s" , " $out THEN
3451: over X c@ s" 0x0" $out .ux 1 /string
3452: LOOP
3453: THEN ;
3454:
3455: : save-asm-region-part ( addr len -- )
3456: over dup X aligned swap - ?dup
3457: IF print-bytes THEN
3458: save-asm-region-part-aligned
3459: dup dup X aligned swap - ?dup
3460: IF 2 pick @relbit ABORT" relocated field splitted"
3461: print-bytes
3462: THEN
3463: 2drop ;
3464:
3465: : print-label ( taddr -- )
3466: nlout generate-label-name $out s" :" $out ;
3467:
3468: : snl-calc ( taddr taddr2 -- )
3469: tuck over - ;
3470:
3471: : skip-nolables ( taddr -- taddr2 taddr len )
3472: \G skips memory region where no lables are defined
3473: \G starting from taddr+1
3474: \G Labels will be introduced for each reference mark
3475: \G in addr-refs.
3476: \G This word deals with lables at byte addresses as well.
3477: \G The main idea is to have an intro part which
3478: \G skips until the next cell boundary, the middle part
3479: \G which skips whole cells very efficiently and the third
3480: \G part which skips the bytes to the label in a cell
3481: dup 1+ dup (>regiontype)
3482: ( S taddr taddr-realstart type-addr )
3483: dup @ dup IF addr-refs @ THEN
3484: swap >r
3485: over align+ tuck tcell swap - rshift swap 0
3486: ?DO dup 1 and
3487: IF drop rdrop snl-calc UNLOOP EXIT THEN
3488: 2/ swap 1+ swap
3489: LOOP
3490: drop r> cell+
3491: ( S .. taddr2 type-addr ) dup
3492: BEGIN dup @ dup IF addr-refs @ THEN 0= WHILE cell+ REPEAT
3493: dup >r swap - 1 cells / tcell * + r>
3494: ( S .. taddr2+skiplencells type-addr )
3495: @ addr-refs @ 1 tcell lshift or
3496: BEGIN dup 1 and 0= WHILE swap 1+ swap 2/ REPEAT drop
3497: ( S .. taddr2+skiplencells+skiplenbytes )
3498: snl-calc ;
3499:
3500: : insert-label ( taddr -- )
3501: dup 0= IF drop EXIT THEN
3502: \ ignore everything which points outside our memory regions
3503: \ maybe a primitive pointer or whatever
3504: dup taddr>region 0= IF drop EXIT THEN
3505: dup >r (>regiontype) define-addr-struct addr-refs dup @
3506: r> tcell 1- and 1 swap lshift or swap ! ;
3507:
3508: \ this generates a sorted list of addresses which must be labels
3509: \ it scans therefore a whole region
3510: : generate-label-list-region ( taddr len -- )
3511: BEGIN over @relbit IF over X @ insert-label THEN
3512: tcell /string dup 0<
3513: UNTIL 2drop ;
3514:
3515: : generate-label-list ( -- )
3516: region-link
3517: BEGIN @ dup WHILE
3518: dup 0 >rlink - extent
3519: ?dup IF generate-label-list-region ELSE drop THEN
3520: REPEAT drop ;
3521:
3522: : create-outfile ( addr len -- )
3523: w/o bin create-file throw outfile-fd ! ;
3524:
3525: : close-outfile ( -- )
3526: outfile-fd @ close-file throw ;
3527:
3528: : (save-asm-region) ( region -- )
3529: \ ." label list..."
3530: generate-label-list
3531: \ ." ok!" cr
3532: extent ( S taddr len )
3533: over insert-label
3534: 2dup + dup insert-label >r ( R end-label )
3535: ( S taddr len ) drop
3536: BEGIN
3537: dup print-label
3538: dup r@ <> WHILE
3539: skip-nolables save-asm-region-part
3540: REPEAT drop rdrop ;
3541:
3542: : lineout ( addr len -- )
3543: outfile-fd @ write-line throw ;
3544:
3545: : save-asm-region ( region adr len -- )
3546: create-outfile (save-asm-region) close-outfile ;
3547:
3548: \ \ minimal definitions
3549:
3550: >MINIMAL also minimal
3551:
3552: \ Usefull words 13feb93py
3553:
3554: : KB 400 * ;
3555:
3556: \ \ [IF] [ELSE] [THEN] ... 14sep97jaw
3557:
3558: \ it is useful to define our own structures and not to rely
3559: \ on the words in the host system
3560: \ The words in the host system might be defined with vocabularies
3561: \ this doesn't work with our self-made compile-loop
3562:
3563: Create parsed 20 chars allot \ store word we parsed
3564:
3565: : upcase
3566: parsed count bounds
3567: ?DO I c@ toupper I c! LOOP ;
3568:
3569: : [ELSE]
3570: 1 BEGIN
3571: BEGIN bl word count dup WHILE
3572: comment? 20 umin parsed place upcase parsed count
3573: 2dup s" [IF]" str= >r
3574: 2dup s" [IFUNDEF]" str= >r
3575: 2dup s" [IFDEF]" str= r> or r> or
3576: IF 2drop 1+
3577: ELSE 2dup s" [ELSE]" str=
3578: IF 2drop 1- dup
3579: IF 1+
3580: THEN
3581: ELSE
3582: 2dup s" [ENDIF]" str= >r
3583: s" [THEN]" str= r> or
3584: IF 1- THEN
3585: THEN
3586: THEN
3587: ?dup 0= ?EXIT
3588: REPEAT
3589: 2drop refill 0=
3590: UNTIL drop ; immediate
3591:
3592: : [THEN] ( -- ) ; immediate
3593:
3594: : [ENDIF] ( -- ) ; immediate
3595:
3596: : [IF] ( flag -- )
3597: 0= IF postpone [ELSE] THEN ; immediate
3598:
3599: Cond: [IF] postpone [IF] ;Cond
3600: Cond: [THEN] postpone [THEN] ;Cond
3601: Cond: [ELSE] postpone [ELSE] ;Cond
3602:
3603: \ define new [IFDEF] and [IFUNDEF] 20may93jaw
3604:
3605: : defined? tdefined? ;
3606: : needed? needed? ;
3607: : doer? doer? ;
3608:
3609: \ we want to use IFDEF on compiler directives (e.g. E?) in the source, too
3610:
3611: : directive?
3612: bl word count [ ' target >wordlist ] literal search-wordlist
3613: dup IF nip THEN ;
3614:
3615: : [IFDEF] >in @ directive? swap >in !
3616: 0= IF tdefined? ELSE name 2drop true THEN
3617: postpone [IF] ;
3618:
3619: : [IFUNDEF] tdefined? 0= postpone [IF] ;
3620:
3621: Cond: [IFDEF] postpone [IFDEF] ;Cond
3622:
3623: Cond: [IFUNDEF] postpone [IFUNDEF] ;Cond
3624:
3625: \ C: \- \+ Conditional Compiling 09jun93jaw
3626:
3627: : C: >in @ tdefined? 0=
3628: IF >in ! X :
3629: ELSE drop
3630: BEGIN bl word dup c@
3631: IF count comment? s" ;" str= ?EXIT
3632: ELSE refill 0= ABORT" CROSS: Out of Input while C:"
3633: THEN
3634: AGAIN
3635: THEN ;
3636:
3637: : d? d? ;
3638:
3639: : \D ( -- "debugswitch" )
3640: \G doesn't skip line when debug switch is on
3641: D? 0= IF postpone \ THEN ;
3642:
3643: : \- ( -- "wordname" )
3644: \G interprets the line if word is not defined
3645: tdefined? IF postpone \ THEN ;
3646:
3647: : \+ ( -- "wordname" )
3648: \G interprets the line if word is defined
3649: tdefined? 0= IF postpone \ THEN ;
3650:
3651: : \? ( -- "envorinstring" )
3652: \G Skip line if environmental variable evaluates to false
3653: X has? 0= IF postpone \ THEN ;
3654:
3655: Cond: \- \- ;Cond
3656: Cond: \+ \+ ;Cond
3657: Cond: \D \D ;Cond
3658: Cond: \? \? ;Cond
3659:
3660: : ?? bl word find IF execute ELSE drop 0 THEN ;
3661:
3662: : needed:
3663: \G defines ghost for words that we want to be compiled
3664: BEGIN >in @ bl word c@ WHILE >in ! Ghost drop REPEAT drop ;
3665:
3666: \ words that should be in minimal
3667:
3668: create s-buffer 50 chars allot
3669:
3670: bigendian Constant bigendian
3671:
3672: : here there ;
3673: : equ constant ;
3674: : mark there constant ;
3675:
3676: \ compiler directives
3677: : >ram >ram ;
3678: : >rom >rom ;
3679: : >auto >auto ;
3680: : >tempdp >tempdp ;
3681: : tempdp> tempdp> ;
3682: : const constflag on ;
3683:
3684: : Redefinitions-start
3685: \G Starts a redefinition section. Warnings are disabled and
3686: \G existing ghosts are reused. This is used in the kernel
3687: \G where ( and \ and the like are redefined
3688: twarnings off warnings off reuse-ghosts on ;
3689:
3690: : Redefinitions-end
3691: \G Ends a redefinition section. Warnings are enabled again.
3692: twarnings on warnings on reuse-ghosts off ;
3693:
3694: : warnings name 3 =
3695: IF twarnings off warnings off ELSE twarnings on warnings on THEN drop ;
3696:
3697: : | ;
3698: \ : | NoHeaderFlag on ; \ This is broken (damages the last word)
3699:
3700: : save-cross save-cross ;
3701: : save-region save-region ;
3702: : tdump swap >image swap dump ;
3703:
3704: also forth
3705: [IFDEF] Label : Label defempty? Label ; [THEN]
3706: [IFDEF] start-macros : start-macros defempty? start-macros ; [THEN]
3707: \ [IFDEF] builttag : builttag builttag ; [THEN]
3708: previous
3709:
3710: : s" [char] " parse s-buffer place s-buffer count ; \ for environment?
3711: : + + ;
3712: : 1+ 1 + ;
3713: : 2+ 2 + ;
3714: : 1- 1- ;
3715: : - - ;
3716: : and and ;
3717: : or or ;
3718: : 2* 2* ;
3719: : * * ;
3720: : / / ;
3721: : dup dup ;
3722: : ?dup ?dup ;
3723: : over over ;
3724: : swap swap ;
3725: : rot rot ;
3726: : drop drop ;
3727: : 2drop 2drop ;
3728: : = = ;
3729: : <> <> ;
3730: : 0= 0= ;
3731: : lshift lshift ;
3732: : 2/ 2/ ;
3733: : hex. base @ $10 base ! swap . base ! ;
3734: : invert invert ;
3735: : linkstring ( addr u n addr -- )
3736: X here over X @ X , swap X ! X , ht-string, X align ;
3737: \ : . . ;
3738:
3739: : all-words ['] forced? IS skip? ;
3740: : needed-words ['] needed? IS skip? ;
3741: : undef-words ['] defined2? IS skip? ;
3742: : skipdef skipdef ;
3743:
3744: : \ postpone \ ; immediate
3745: : \G T-\G ; immediate
3746: : ( postpone ( ; immediate
3747: : include bl word count included ;
3748: : included swap >image swap included ;
3749: : require require ;
3750: : needs require ;
3751: : .( [char] ) parse type ;
3752: : ERROR" [char] " parse
3753: rot
3754: IF cr ." *** " type ." ***" -1 ABORT" CROSS: Target error, see text above"
3755: ELSE 2drop
3756: THEN ;
3757: : ." [char] " parse type ;
3758: : cr cr ;
3759:
3760: : times 0 ?DO dup X c, LOOP drop ; \ used for space table creation
3761:
3762: \ only forth also cross also minimal definitions order
3763:
3764: \ cross-compiler words
3765:
3766: : decimal decimal [g'] decimal >exec2 @ ?dup IF EXECUTE THEN ;
3767: : hex hex [g'] hex >exec2 @ ?dup IF EXECUTE THEN ;
3768:
3769: \ : tudp X tudp ;
3770: \ : tup X tup ;
3771:
3772: : doc-off false to-doc ! ;
3773: : doc-on true to-doc ! ;
3774:
3775: : declareunique ( "name" -- )
3776: \ Sets the unique flag for a ghost. The assembler output
3777: \ generates labels with the ghostname concatenated with the address
3778: \ while cross-compiling. The address is concatenated
3779: \ because we have double occurences of the same name.
3780: \ If we want to reference the labels from the assembler or C
3781: \ code we declare them unique, so the address is skipped.
3782: Ghost >ghost-flags dup @ <unique> or swap ! ;
3783:
3784: \ [IFDEF] dbg : dbg dbg ; [THEN]
3785:
3786: \ for debugging...
3787: \ : dbg dbg ;
3788: : horder order ;
3789: : hwords words ;
3790: \ : words also ghosts
3791: \ words previous ;
3792: : .s .s ;
3793: : depth depth ;
3794: : bye bye ;
3795:
3796: \ dummy
3797:
3798: \ turnkey direction
3799: : H forth ; immediate
3800: : T minimal ; immediate
3801: : G ghosts ; immediate
3802:
3803:
3804: \ these ones are pefered:
3805:
3806: : unlock previous forth also cross ;
3807:
3808: \ also minimal
3809: >cross
3810:
3811: : turnkey
3812: ghosts-wordlist 1 set-order
3813: also target definitions
3814: also Minimal also ;
3815:
3816: >minimal
3817:
3818: : [[+++
3819: turnkey unlock ;
3820:
3821: unlock definitions also minimal
3822:
3823: : lock turnkey ;
3824:
3825: Defer +++]]-hook
3826: : +++]] +++]]-hook lock ;
3827:
3828: LOCK
3829: \ load cross compiler extension defined in mach file
3830:
3831: UNLOCK >CROSS
3832:
3833: [IFDEF] extend-cross extend-cross [THEN]
3834:
3835: LOCK
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