1: \ CROSS.FS The Cross-Compiler 06oct92py
2: \ Idea and implementation: Bernd Paysan (py)
3:
4: \ Copyright (C) 1995,1996,1997,1998,1999,2000 Free Software Foundation, Inc.
5:
6: \ This file is part of Gforth.
7:
8: \ Gforth is free software; you can redistribute it and/or
9: \ modify it under the terms of the GNU General Public License
10: \ as published by the Free Software Foundation; either version 2
11: \ of the License, or (at your option) any later version.
12:
13: \ This program is distributed in the hope that it will be useful,
14: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
15: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: \ GNU General Public License for more details.
17:
18: \ You should have received a copy of the GNU General Public License
19: \ along with this program; if not, write to the Free Software
20: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
21:
22: 0
23: [IF]
24:
25: ToDo:
26: - Crossdoc destination ./doc/crossdoc.fd makes no sense when
27: cross.fs is used seperately. jaw
28: - Do we need this char translation with >address and in branchoffset?
29: (>body also affected) jaw
30:
31: [THEN]
32:
33: hex
34:
35: \ debugging for compiling
36:
37: \ print stack at each colon definition
38: \ : : save-input cr bl word count type restore-input throw .s : ;
39:
40: \ print stack at each created word
41: \ : create save-input cr bl word count type restore-input throw .s create ;
42:
43:
44: \ \ ------------- Setup Vocabularies
45:
46: \ Remark: Vocabulary is not ANS, but it should work...
47:
48: Vocabulary Cross
49: Vocabulary Target
50: Vocabulary Ghosts
51: Vocabulary Minimal
52: only Forth also Target also also
53: definitions Forth
54:
55: : T previous Ghosts also Target ; immediate
56: : G Ghosts ; immediate
57: : H previous Forth also Cross ; immediate
58:
59: forth definitions
60:
61: : T previous Ghosts also Target ; immediate
62: : G Ghosts ; immediate
63:
64:
65: : >cross also Cross definitions previous ;
66: : >target also Target definitions previous ;
67: : >minimal also Minimal definitions previous ;
68:
69: H
70:
71: >CROSS
72:
73: \ Test against this definitions to find out whether we are cross-compiling
74: \ may be usefull for assemblers
75: 0 Constant gforth-cross-indicator
76:
77: \ find out whether we are compiling with gforth
78:
79: : defined? bl word find nip ;
80: defined? emit-file defined? toupper and \ drop 0
81: [IF]
82: \ use this in a gforth system
83: : \GFORTH ; immediate
84: : \ANSI postpone \ ; immediate
85: [ELSE]
86: : \GFORTH postpone \ ; immediate
87: : \ANSI ; immediate
88: [THEN]
89:
90: \ANSI : [IFUNDEF] defined? 0= postpone [IF] ; immediate
91: \ANSI : [IFDEF] defined? postpone [IF] ; immediate
92: 0 \ANSI drop 1
93: [IF]
94: : \G postpone \ ; immediate
95: : rdrop postpone r> postpone drop ; immediate
96: : name bl word count ;
97: : bounds over + swap ;
98: : scan >r BEGIN dup WHILE over c@ r@ <> WHILE 1 /string REPEAT THEN rdrop ;
99: : linked here over @ , swap ! ;
100: : alias create , DOES> @ EXECUTE ;
101: : defer ['] noop alias ;
102: : is state @
103: IF ' >body postpone literal postpone !
104: ELSE ' >body ! THEN ; immediate
105: : 0>= 0< 0= ;
106: : d<> rot <> -rot <> or ;
107: : toupper dup [char] a [char] z 1+ within IF [char] A [char] a - + THEN ;
108: Variable ebuf
109: : emit-file ( c fd -- ior ) swap ebuf c! ebuf 1 chars rot write-file ;
110: 0a Constant #lf
111: 0d Constant #cr
112:
113: [IFUNDEF] Warnings Variable Warnings [THEN]
114:
115: \ \ Number parsing 23feb93py
116:
117: \ number? number 23feb93py
118:
119: Variable dpl
120:
121: hex
122: Create bases 10 , 2 , A , 100 ,
123: \ 16 2 10 character
124:
125: \ !! protect BASE saving wrapper against exceptions
126: : getbase ( addr u -- addr' u' )
127: over c@ [char] $ - dup 4 u<
128: IF
129: cells bases + @ base ! 1 /string
130: ELSE
131: drop
132: THEN ;
133:
134: : sign? ( addr u -- addr u flag )
135: over c@ [char] - = dup >r
136: IF
137: 1 /string
138: THEN
139: r> ;
140:
141: : s>unumber? ( addr u -- ud flag )
142: over [char] ' =
143: IF \ a ' alone is rather unusual :-)
144: drop char+ c@ 0 true EXIT
145: THEN
146: base @ >r dpl on getbase
147: 0. 2swap
148: BEGIN ( d addr len )
149: dup >r >number dup
150: WHILE \ there are characters left
151: dup r> -
152: WHILE \ the last >number parsed something
153: dup 1- dpl ! over c@ [char] . =
154: WHILE \ the current char is '.'
155: 1 /string
156: REPEAT THEN \ there are unparseable characters left
157: 2drop false
158: ELSE
159: rdrop 2drop true
160: THEN
161: r> base ! ;
162:
163: \ ouch, this is complicated; there must be a simpler way - anton
164: : s>number? ( addr len -- d f )
165: \ converts string addr len into d, flag indicates success
166: sign? >r
167: s>unumber?
168: 0= IF
169: rdrop false
170: ELSE \ no characters left, all ok
171: r>
172: IF
173: dnegate
174: THEN
175: true
176: THEN ;
177:
178: : s>number ( addr len -- d )
179: \ don't use this, there is no way to tell success
180: s>number? drop ;
181:
182: : snumber? ( c-addr u -- 0 / n -1 / d 0> )
183: s>number? 0=
184: IF
185: 2drop false EXIT
186: THEN
187: dpl @ dup 0< IF
188: nip
189: ELSE
190: 1+
191: THEN ;
192:
193: : number? ( string -- string 0 / n -1 / d 0> )
194: dup >r count snumber? dup if
195: rdrop
196: else
197: r> swap
198: then ;
199:
200: : number ( string -- d )
201: number? ?dup 0= abort" ?" 0<
202: IF
203: s>d
204: THEN ;
205:
206: [THEN]
207:
208: \ this provides assert( and struct stuff
209: \GFORTH [IFUNDEF] assert1(
210: \GFORTH also forth definitions require assert.fs previous
211: \GFORTH [THEN]
212:
213: >CROSS
214:
215: hex \ the defualt base for the cross-compiler is hex !!
216: \ Warnings off
217:
218: \ words that are generaly useful
219:
220: : KB 400 * ;
221: : >wordlist ( vocabulary-xt -- wordlist-struct )
222: also execute get-order swap >r 1- set-order r> ;
223:
224: : umax 2dup u< IF swap THEN drop ;
225: : umin 2dup u> IF swap THEN drop ;
226:
227: : string, ( c-addr u -- )
228: \ puts down string as cstring
229: dup c, here swap chars dup allot move ;
230:
231: : ," [char] " parse string, ;
232:
233: : SetValue ( n -- <name> )
234: \G Same behaviour as "Value" if the <name> is not defined
235: \G Same behaviour as "to" if <name> is defined
236: \G SetValue searches in the current vocabulary
237: save-input bl word >r restore-input throw r> count
238: get-current search-wordlist
239: IF drop >r
240: \ we have to set current to be topmost context wordlist
241: get-order get-order get-current swap 1+ set-order
242: r> ['] to execute
243: set-order
244: ELSE Value THEN ;
245:
246: : DefaultValue ( n -- <name> )
247: \G Same behaviour as "Value" if the <name> is not defined
248: \G DefaultValue searches in the current vocabulary
249: save-input bl word >r restore-input throw r> count
250: get-current search-wordlist
251: IF bl word drop 2drop ELSE Value THEN ;
252:
253: hex
254:
255: \ FIXME delete`
256: \ 1 Constant Cross-Flag \ to check whether assembler compiler plug-ins are
257: \ for cross-compiling
258: \ No! we use "[IFUNDEF]" there to find out whether we are target compiling!!!
259:
260: \ FIXME move down
261: : comment? ( c-addr u -- c-addr u )
262: 2dup s" (" compare 0=
263: IF postpone (
264: ELSE 2dup s" \" compare 0= IF postpone \ THEN
265: THEN ;
266:
267: : X ( -- <name> )
268: \G The next word in the input is a target word.
269: \G Equivalent to T <name> but without permanent
270: \G switch to target dictionary. Used as prefix e.g. for @, !, here etc.
271: bl word count [ ' target >wordlist ] Literal search-wordlist
272: IF state @ IF compile, ELSE execute THEN
273: ELSE -1 ABORT" Cross: access method not supported!"
274: THEN ; immediate
275:
276: \ Begin CROSS COMPILER:
277:
278: \ debugging
279:
280: 0 [IF]
281:
282: This implements debugflags for the cross compiler and the compiled
283: images. It works identical to the has-flags in the environment.
284: The debugflags are defined in a vocabluary. If the word exists and
285: its value is true, the flag is switched on.
286:
287: [THEN]
288:
289: >CROSS
290:
291: Vocabulary debugflags \ debug flags for cross
292: also debugflags get-order over
293: Constant debugflags-wl
294: set-order previous
295:
296: : DebugFlag
297: get-current >r debugflags-wl set-current
298: SetValue
299: r> set-current ;
300:
301: : Debug? ( adr u -- flag )
302: \G return true if debug flag is defined or switched on
303: debugflags-wl search-wordlist
304: IF EXECUTE
305: ELSE false THEN ;
306:
307: : D? ( <name> -- flag )
308: \G return true if debug flag is defined or switched on
309: \G while compiling we do not return the current value but
310: bl word count debug? ;
311:
312: : [d?]
313: \G compile the value-xt so the debug flag can be switched
314: \G the flag must exist!
315: bl word count debugflags-wl search-wordlist
316: IF compile,
317: ELSE -1 ABORT" unknown debug flag"
318: \ POSTPONE false
319: THEN ; immediate
320:
321: : symentry ( adr len taddr -- )
322: \G Produce a symbol table (an optional symbol address
323: \G map) if wanted
324: [ [IFDEF] fd-symbol-table ]
325: base @ swap hex s>d <# 8 0 DO # LOOP #> fd-symbol-table write-file throw base !
326: s" :" fd-symbol-table write-file throw
327: fd-symbol-table write-line throw
328: [ [ELSE] ]
329: 2drop drop
330: [ [THEN] ] ;
331:
332:
333: \ \ -------------------- source file
334:
335: decimal
336:
337: Variable cross-file-list
338: 0 cross-file-list !
339: Variable target-file-list
340: 0 target-file-list !
341: Variable host-file-list
342: 0 host-file-list !
343:
344: cross-file-list Value file-list
345: 0 Value source-desc
346:
347: \ file loading
348:
349: : >fl-id 1 cells + ;
350: : >fl-name 2 cells + ;
351:
352: Variable filelist 0 filelist !
353: Create NoFile ," #load-file#"
354:
355: : loadfile ( -- adr )
356: source-desc ?dup IF >fl-name ELSE NoFile THEN ;
357:
358: : sourcefilename ( -- adr len )
359: loadfile count ;
360:
361: \ANSI : sourceline# 0 ;
362:
363: \ \ -------------------- path handling from kernel/paths.fs
364:
365: \ paths.fs path file handling 03may97jaw
366:
367: \ -Changing the search-path:
368: \ fpath+ <path> adds a directory to the searchpath
369: \ fpath= <path>|<path> makes complete now searchpath
370: \ seperator is |
371: \ .fpath displays the search path
372: \ remark I:
373: \ a ./ in the beginning of filename is expanded to the directory the
374: \ current file comes from. ./ can also be included in the search-path!
375: \ ~+/ loads from the current working directory
376:
377: \ remark II:
378: \ if there is no sufficient space for the search path increase it!
379:
380:
381: \ -Creating custom paths:
382:
383: \ It is possible to use the search mechanism on yourself.
384:
385: \ Make a buffer for the path:
386: \ create mypath 100 chars , \ maximum length (is checked)
387: \ 0 , \ real len
388: \ 100 chars allot \ space for path
389: \ use the same functions as above with:
390: \ mypath path+
391: \ mypath path=
392: \ mypath .path
393:
394: \ do a open with the search path:
395: \ open-path-file ( adr len path -- fd adr len ior )
396: \ the file is opened read-only; if the file is not found an error is generated
397:
398: \ questions to: wilke@jwdt.com
399:
400: [IFUNDEF] +place
401: : +place ( adr len adr )
402: 2dup >r >r
403: dup c@ char+ + swap move
404: r> r> dup c@ rot + swap c! ;
405: [THEN]
406:
407: [IFUNDEF] place
408: : place ( c-addr1 u c-addr2 )
409: 2dup c! char+ swap move ;
410: [THEN]
411:
412: \ if we have path handling, use this and the setup of it
413: [IFUNDEF] open-fpath-file
414:
415: create sourcepath 1024 chars , 0 , 1024 chars allot \ !! make this dynamic
416: sourcepath value fpath
417:
418: : also-path ( adr len path^ -- )
419: >r
420: \ len check
421: r@ cell+ @ over + r@ @ u> ABORT" path buffer too small!"
422: \ copy into
423: tuck r@ cell+ dup @ cell+ + swap cmove
424: \ make delimiter
425: 0 r@ cell+ dup @ cell+ + 2 pick + c! 1 + r> cell+ +!
426: ;
427:
428: : only-path ( adr len path^ -- )
429: dup 0 swap cell+ ! also-path ;
430:
431: : path+ ( path-addr "dir" -- ) \ gforth
432: \G Add the directory @var{dir} to the search path @var{path-addr}.
433: name rot also-path ;
434:
435: : fpath+ ( "dir" ) \ gforth
436: \G Add directory @var{dir} to the Forth search path.
437: fpath path+ ;
438:
439: : path= ( path-addr "dir1|dir2|dir3" ) \ gforth
440: \G Make a complete new search path; the path separator is |.
441: name 2dup bounds ?DO i c@ [char] | = IF 0 i c! THEN LOOP
442: rot only-path ;
443:
444: : fpath= ( "dir1|dir2|dir3" ) \ gforth
445: \G Make a complete new Forth search path; the path separator is |.
446: fpath path= ;
447:
448: : path>counted cell+ dup cell+ swap @ ;
449:
450: : next-path ( adr len -- adr2 len2 )
451: 2dup 0 scan
452: dup 0= IF 2drop 0 -rot 0 -rot EXIT THEN
453: >r 1+ -rot r@ 1- -rot
454: r> - ;
455:
456: : previous-path ( path^ -- )
457: dup path>counted
458: BEGIN tuck dup WHILE repeat ;
459:
460: : .path ( path-addr -- ) \ gforth
461: \G Display the contents of the search path @var{path-addr}.
462: path>counted
463: BEGIN next-path dup WHILE type space REPEAT 2drop 2drop ;
464:
465: : .fpath ( -- ) \ gforth
466: \G Display the contents of the Forth search path.
467: fpath .path ;
468:
469: : absolut-path? ( addr u -- flag ) \ gforth
470: \G A path is absolute if it starts with a / or a ~ (~ expansion),
471: \G or if it is in the form ./*, extended regexp: ^[/~]|./, or if
472: \G it has a colon as second character ("C:..."). Paths simply
473: \G containing a / are not absolute!
474: 2dup 2 u> swap 1+ c@ [char] : = and >r \ dos absoulte: c:/....
475: over c@ [char] / = >r
476: over c@ [char] ~ = >r
477: \ 2dup 3 min S" ../" compare 0= r> or >r \ not catered for in expandtopic
478: 2 min S" ./" compare 0=
479: r> r> r> or or or ;
480:
481: Create ofile 0 c, 255 chars allot
482: Create tfile 0 c, 255 chars allot
483:
484: : pathsep? dup [char] / = swap [char] \ = or ;
485:
486: : need/ ofile dup c@ + c@ pathsep? 0= IF s" /" ofile +place THEN ;
487:
488: : extractpath ( adr len -- adr len2 )
489: BEGIN dup WHILE 1-
490: 2dup + c@ pathsep? IF EXIT THEN
491: REPEAT ;
492:
493: : remove~+ ( -- )
494: ofile count 3 min s" ~+/" compare 0=
495: IF
496: ofile count 3 /string ofile place
497: THEN ;
498:
499: : expandtopic ( -- ) \ stack effect correct? - anton
500: \ expands "./" into an absolute name
501: ofile count 2 min s" ./" compare 0=
502: IF
503: ofile count 1 /string tfile place
504: 0 ofile c! sourcefilename extractpath ofile place
505: ofile c@ IF need/ THEN
506: tfile count over c@ pathsep? IF 1 /string THEN
507: ofile +place
508: THEN ;
509:
510: : compact.. ( adr len -- adr2 len2 )
511: \ deletes phrases like "xy/.." out of our directory name 2dec97jaw
512: over swap
513: BEGIN dup WHILE
514: dup >r '/ scan 2dup 4 min s" /../" compare 0=
515: IF
516: dup r> - >r 4 /string over r> + 4 -
517: swap 2dup + >r move dup r> over -
518: ELSE
519: rdrop dup 1 min /string
520: THEN
521: REPEAT drop over - ;
522:
523: : reworkdir ( -- )
524: remove~+
525: ofile count compact..
526: nip ofile c! ;
527:
528: : open-ofile ( -- fid ior )
529: \G opens the file whose name is in ofile
530: expandtopic reworkdir
531: ofile count r/o open-file ;
532:
533: : check-path ( adr1 len1 adr2 len2 -- fd 0 | 0 <>0 )
534: 0 ofile ! >r >r ofile place need/
535: r> r> ofile +place
536: open-ofile ;
537:
538: : open-path-file ( addr1 u1 path-addr -- wfileid addr2 u2 0 | ior ) \ gforth
539: \G Look in path @var{path-addr} for the file specified by @var{addr1 u1}.
540: \G If found, the resulting path and an open file descriptor
541: \G are returned. If the file is not found, @var{ior} is non-zero.
542: >r
543: 2dup absolut-path?
544: IF rdrop
545: ofile place open-ofile
546: dup 0= IF >r ofile count r> THEN EXIT
547: ELSE r> path>counted
548: BEGIN next-path dup
549: WHILE 5 pick 5 pick check-path
550: 0= IF >r 2drop 2drop r> ofile count 0 EXIT ELSE drop THEN
551: REPEAT
552: 2drop 2drop 2drop -38
553: THEN ;
554:
555: : open-fpath-file ( addr1 u1 -- wfileid addr2 u2 0 | ior ) \ gforth
556: \G Look in the Forth search path for the file specified by @var{addr1 u1}.
557: \G If found, the resulting path and an open file descriptor
558: \G are returned. If the file is not found, @var{ior} is non-zero.
559: fpath open-path-file ;
560:
561: fpath= ~+
562:
563: [THEN]
564:
565: \ \ -------------------- include require 13may99jaw
566:
567: >CROSS
568:
569: : add-included-file ( adr len -- adr )
570: dup >fl-name char+ allocate throw >r
571: file-list @ r@ ! r@ file-list !
572: r@ >fl-name place r> ;
573:
574: : included? ( c-addr u -- f )
575: file-list
576: BEGIN @ dup
577: WHILE >r 2dup r@ >fl-name count compare 0=
578: IF rdrop 2drop true EXIT THEN
579: r>
580: REPEAT
581: 2drop drop false ;
582:
583: false DebugFlag showincludedfiles
584:
585: : included1 ( fd adr u -- )
586: \ include file adr u / fd
587: \ we don't use fd with include-file, because the forth system
588: \ doesn't know the name of the file to get a nice error report
589: [d?] showincludedfiles
590: IF cr ." Including: " 2dup type ." ..." THEN
591: rot close-file throw
592: source-desc >r
593: add-included-file to source-desc
594: sourcefilename
595: ['] included catch
596: r> to source-desc
597: throw ;
598:
599: : included ( adr len -- )
600: cross-file-list to file-list
601: open-fpath-file throw
602: included1 ;
603:
604: : required ( adr len -- )
605: cross-file-list to file-list
606: open-fpath-file throw \ 2dup cr ." R:" type
607: 2dup included?
608: IF 2drop close-file throw
609: ELSE included1
610: THEN ;
611:
612: : include bl word count included ;
613:
614: : require bl word count required ;
615:
616: 0 [IF]
617:
618: also forth definitions previous
619:
620: : included ( adr len -- ) included ;
621:
622: : required ( adr len -- ) required ;
623:
624: : include include ;
625:
626: : require require ;
627:
628: [THEN]
629:
630: >CROSS
631: hex
632:
633: \ \ -------------------- Error Handling 05aug97jaw
634:
635: \ Flags
636:
637: also forth definitions \ these values may be predefined before
638: \ the cross-compiler is loaded
639:
640: false DefaultValue stack-warn \ check on empty stack at any definition
641: false DefaultValue create-forward-warn \ warn on forward declaration of created words
642:
643: previous >CROSS
644:
645: : .dec
646: base @ decimal swap . base ! ;
647:
648: : .sourcepos
649: cr sourcefilename type ." :"
650: sourceline# .dec ;
651:
652: : warnhead
653: \G display error-message head
654: \G perhaps with linenumber and filename
655: .sourcepos ." Warning: " ;
656:
657: : empty? depth IF .sourcepos ." Stack not empty!" THEN ;
658:
659: stack-warn [IF]
660: : defempty? empty? ;
661: [ELSE]
662: : defempty? ; immediate
663: [THEN]
664:
665: \ \ -------------------- Compiler Plug Ins 01aug97jaw
666:
667: >CROSS
668:
669: \ Compiler States
670:
671: Variable comp-state
672: 0 Constant interpreting
673: 1 Constant compiling
674: 2 Constant resolving
675: 3 Constant assembling
676:
677: : compiling? comp-state @ compiling = ;
678:
679: : pi-undefined -1 ABORT" Plugin undefined" ;
680:
681: : Plugin ( -- : pluginname )
682: Create
683: \ for normal cross-compiling only one action
684: \ exists, this fields are identical. For the instant
685: \ simulation environment we need, two actions for each plugin
686: \ the target one and the one that generates the simulation code
687: ['] pi-undefined , \ action
688: ['] pi-undefined , \ target plugin action
689: 8765 , \ plugin magic
690: DOES> perform ;
691:
692: Plugin DummyPlugin
693:
694: : 'PI ( -- addr : pluginname )
695: ' >body dup 2 cells + @ 8765 <> ABORT" not a plugin" ;
696:
697: : plugin-of ( xt -- : pluginname )
698: dup 'PI 2! ;
699:
700: : action-of ( xt -- : plunginname )
701: 'PI cell+ ! ;
702:
703: : TPA ( -- : plugin )
704: \ target plugin action
705: \ executes current target action of plugin
706: 'PI cell+ POSTPONE literal POSTPONE perform ; immediate
707:
708: Variable ppi-temp 0 ppi-temp !
709:
710: : pa:
711: \g define plugin action
712: ppi-temp @ ABORT" pa: definition not closed"
713: 'PI ppi-temp ! :noname ;
714:
715: : ;pa
716: \g end a definition for plugin action
717: POSTPONE ; ppi-temp @ ! 0 ppi-temp ! ; immediate
718:
719:
720: Plugin dlit, ( d -- ) \ compile numerical value the target
721: Plugin lit, ( n -- )
722: Plugin alit, ( n -- )
723:
724: Plugin branch, ( target-addr -- ) \ compiles a branch
725: Plugin ?branch, ( target-addr -- ) \ compiles a ?branch
726: Plugin branchmark, ( -- branch-addr ) \ reserves room for a branch
727: Plugin ?branchmark, ( -- branch-addr ) \ reserves room for a ?branch
728: Plugin ?domark, ( -- branch-addr ) \ reserves room for a ?do branch
729: Plugin branchto, ( -- ) \ actual program position is target of a branch (do e.g. alignment)
730: ' NOOP plugin-of branchto,
731: Plugin branchtoresolve, ( branch-addr -- ) \ resolves a forward reference from branchmark
732: Plugin branchtomark, ( -- target-addr ) \ marks a branch destination
733:
734: Plugin colon, ( tcfa -- ) \ compiles call to tcfa at current position
735: Plugin prim, ( tcfa -- ) \ compiles primitive invocation
736: Plugin colonmark, ( -- addr ) \ marks a colon call
737: Plugin colon-resolve ( tcfa addr -- )
738:
739: Plugin addr-resolve ( target-addr addr -- )
740: Plugin doer-resolve ( ghost res-pnt target-addr addr -- ghost res-pnt )
741:
742: Plugin ncontrols? ( [ xn ... x1 ] n -- ) \ checks wheter n control structures are open
743: Plugin if, ( -- if-token )
744: Plugin else, ( if-token -- if-token )
745: Plugin then, ( if-token -- )
746: Plugin ahead,
747: Plugin begin,
748: Plugin while,
749: Plugin until,
750: Plugin again,
751: Plugin repeat,
752: Plugin cs-swap ( x1 x2 -- x2 x1 )
753:
754: Plugin case, ( -- n )
755: Plugin of, ( n -- x1 n )
756: Plugin endof, ( x1 n -- x2 n )
757: Plugin endcase, ( x1 .. xn n -- )
758:
759: Plugin do, ( -- do-token )
760: Plugin ?do, ( -- ?do-token )
761: Plugin for, ( -- for-token )
762: Plugin loop, ( do-token / ?do-token -- )
763: Plugin +loop, ( do-token / ?do-token -- )
764: Plugin next, ( for-token )
765: Plugin leave, ( -- )
766: Plugin ?leave, ( -- )
767:
768: Plugin ca>native \ Convert a code address to the processors
769: \ native address. This is used in doprim, and
770: \ code/code: primitive definitions word to
771: \ convert the addresses.
772: \ The only target where we need this is the misc
773: \ which is a 16 Bit processor with word addresses
774: \ but the forth system we build has a normal byte
775: \ addressed memory model
776:
777: Plugin doprim, \ compiles start of a primitive
778: Plugin docol, \ compiles start of a colon definition
779: Plugin doer,
780: Plugin fini, \ compiles end of definition ;s
781: Plugin doeshandler,
782: Plugin dodoes,
783:
784: Plugin colon-start
785: ' noop plugin-of colon-start
786: Plugin colon-end
787: ' noop plugin-of colon-end
788:
789: Plugin ]comp \ starts compilation
790: ' noop plugin-of ]comp
791: Plugin comp[ \ ends compilation
792: ' noop plugin-of comp[
793:
794: Plugin t>body \ we need the system >body
795: \ and the target >body
796:
797: >TARGET
798: : >body t>body ;
799:
800:
801: \ Ghost Builder 06oct92py
802:
803: >CROSS
804: hex
805: \ Values for ghost magic
806: 4711 Constant <fwd> 4712 Constant <res>
807: 4713 Constant <imm> 4714 Constant <do:>
808: 4715 Constant <skip>
809:
810: \ Bitmask for ghost flags
811: 1 Constant <unique>
812: 2 Constant <primitive>
813:
814: \ FXIME: move this to general stuff?
815: : set-flag ( addr flag -- )
816: over @ or swap ! ;
817:
818: : reset-flag ( addr flag -- )
819: invert over @ and swap ! ;
820:
821: : get-flag ( addr flag -- f )
822: swap @ and 0<> ;
823:
824:
825: Struct
826:
827: \ link to next ghost (always the first element)
828: cell% field >next-ghost
829:
830: \ type of ghost
831: cell% field >magic
832:
833: \ pointer where ghost is in target, or if unresolved
834: \ points to the where we have to resolve (linked-list)
835: cell% field >link
836:
837: \ execution semantics (while target compiling) of ghost
838: cell% field >exec
839:
840: \ compilation action of this ghost; this is what is
841: \ done to compile a call (or whatever) to this definition.
842: \ E.g. >comp contains the semantic of postpone s"
843: \ whereas >exec-compile contains the semantic of s"
844: cell% field >comp
845:
846: \ Compilation sematics (while parsing) of this ghost. E.g.
847: \ "\" will skip the rest of line.
848: \ These semantics are defined by Cond: and
849: \ if a word is made immediate in instant, then the >exec2 field
850: \ gets copied to here
851: cell% field >exec-compile
852:
853: \ Additional execution semantics of this ghost. This is used
854: \ for code generated by instant and for the doer-xt of created
855: \ words
856: cell% field >exec2
857:
858: cell% field >created
859:
860: \ the xt of the created ghost word itself
861: cell% field >ghost-xt
862:
863: \ pointer to the counted string of the assiciated
864: \ assembler label
865: cell% field >asm-name
866:
867: \ mapped primitives have a special address, so
868: \ we are able to detect them
869: cell% field >asm-dummyaddr
870:
871: \ for builder (create, variable...) words
872: \ the execution symantics of words built are placed here
873: \ this is a doer ghost or a dummy ghost
874: cell% field >do:ghost
875:
876: cell% field >ghost-flags
877:
878: cell% field >ghost-name
879:
880: End-Struct ghost-struct
881:
882: Variable ghost-list
883: 0 ghost-list !
884:
885: Variable executed-ghost \ last executed ghost, needed in tcreate and gdoes>
886: \ Variable last-ghost \ last ghost that is created
887: Variable last-header-ghost \ last ghost definitions with header
888:
889: \ space for ghosts resolve structure
890: \ we create ghosts in a sepearte space
891: \ and not to the current host dp, because this
892: \ gives trouble with instant while compiling and creating
893: \ a ghost for a forward reference
894: \ BTW: we cannot allocate another memory region
895: \ because allot will check the overflow!!
896: Variable cross-space-dp
897: Create cross-space 250000 allot here 100 allot align
898: Constant cross-space-end
899: cross-space cross-space-dp !
900: Variable cross-space-dp-orig
901:
902: : cross-space-used cross-space-dp @ cross-space - ;
903:
904: : >space ( -- )
905: dp @ cross-space-dp-orig !
906: cross-space-dp @ dp ! ;
907:
908: : space> ( -- )
909: dp @ dup cross-space-dp !
910: cross-space-end u> ABORT" CROSS: cross-space overflow"
911: cross-space-dp-orig @ dp ! ;
912:
913: \ this is just for debugging, to see this in the backtrace
914: : execute-exec execute ;
915: : execute-exec2 execute ;
916: : execute-exec-compile execute ;
917:
918: : NoExec
919: executed-ghost @ >exec2 @
920: ?dup
921: IF execute-exec2
922: ELSE true ABORT" CROSS: Don't execute ghost, or immediate target word"
923: THEN ;
924:
925: Defer is-forward
926:
927: : (ghostheader) ( -- )
928: ghost-list linked <fwd> , 0 , ['] NoExec , ['] is-forward ,
929: 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , ;
930:
931: : ghostheader ( -- ) (ghostheader) 0 , ;
932:
933: ' Ghosts >wordlist Constant ghosts-wordlist
934:
935: \ the current wordlist for ghost definitions in the host
936: ghosts-wordlist Value current-ghosts
937:
938: : Make-Ghost ( "name" -- ghost )
939: >space
940: \ save current and create in ghost vocabulary
941: get-current >r current-ghosts set-current
942: >in @ Create >in !
943: \ some forth systems like iForth need the immediate directly
944: \ after the word is created
945: \ restore current
946: r> set-current
947: here (ghostheader)
948: bl word count string, align
949: space>
950: \ set ghost-xt field by doing a search
951: dup >ghost-name count
952: current-ghosts search-wordlist
953: 0= ABORT" CROSS: Just created, must be there!"
954: over >ghost-xt !
955: DOES>
956: dup executed-ghost !
957: >exec @ execute-exec ;
958:
959: \ ghost words 14oct92py
960: \ changed: 10may93py/jaw
961:
962: Defer search-ghosts
963:
964: : (search-ghosts) ( adr len -- cfa true | 0 )
965: current-ghosts search-wordlist ;
966:
967: ' (search-ghosts) IS search-ghosts
968:
969: : gsearch ( addr len -- ghost true | 0 )
970: search-ghosts
971: dup IF swap >body swap THEN ;
972:
973: : gfind ( string -- ghost true / string false )
974: \ searches for string in word-list ghosts
975: \ dup count type space
976: dup >r count gsearch
977: dup IF rdrop ELSE r> swap THEN ;
978:
979: : gdiscover ( xt -- ghost true | xt false )
980: >r ghost-list
981: BEGIN @ dup
982: WHILE dup >magic @ <fwd> <>
983: IF dup >link @ r@ =
984: IF rdrop true EXIT THEN
985: THEN
986: REPEAT
987: drop r> false ;
988:
989: : xt>ghost ( xt -- ghost )
990: gdiscover 0= ABORT" CROSS: ghost not found for this xt" ;
991:
992: : Ghost ( "name" -- ghost )
993: >in @ bl word gfind IF nip EXIT THEN
994: drop >in ! Make-Ghost ;
995:
996: : >ghostname ( ghost -- adr len )
997: >ghost-name count ;
998:
999: : forward? ( ghost -- flag )
1000: >magic @ <fwd> = ;
1001:
1002: : undefined? ( ghost -- flag )
1003: >magic @ dup <fwd> = swap <skip> = or ;
1004:
1005: : immediate? ( ghost -- flag )
1006: >magic @ <imm> = ;
1007:
1008: Variable TWarnings
1009: TWarnings on
1010: Variable Exists-Warnings
1011: Exists-Warnings on
1012:
1013: : exists-warning ( ghost -- ghost )
1014: TWarnings @ Exists-Warnings @ and
1015: IF dup >ghostname warnhead type ." exists " THEN ;
1016:
1017: \ : HeaderGhost Ghost ;
1018:
1019: Variable reuse-ghosts reuse-ghosts off
1020:
1021: : HeaderGhost ( "name" -- ghost )
1022: >in @
1023: bl word count
1024: \ 2dup type space
1025: current-ghosts search-wordlist
1026: IF >body dup undefined? reuse-ghosts @ or
1027: IF nip EXIT
1028: ELSE exists-warning
1029: THEN
1030: drop >in !
1031: ELSE >in !
1032: THEN
1033: \ we keep the execution semantics of the prviously
1034: \ defined words, this is a workaround
1035: \ for the redefined \ until vocs work
1036: Make-Ghost ;
1037:
1038: : .ghost ( ghost -- ) >ghostname type ;
1039:
1040: \ ' >ghostname ALIAS @name
1041:
1042: : findghost ( "ghostname" -- ghost )
1043: bl word gfind 0= ABORT" CROSS: Ghost don't exists" ;
1044:
1045: : [G'] ( -- ghost : name )
1046: \G ticks a ghost and returns its address
1047: findghost
1048: state @ IF postpone literal THEN ; immediate
1049:
1050: : g>xt ( ghost -- xt )
1051: \G Returns the xt (cfa) of a ghost. Issues a warning if undefined.
1052: dup undefined? ABORT" CROSS: forward " >link @ ;
1053:
1054: : g>body ( ghost -- body )
1055: \G Returns the body-address (pfa) of a ghost.
1056: \G Issues a warning if undefined (a forward-reference).
1057: g>xt X >body ;
1058:
1059: 1 Constant <label>
1060:
1061: Struct
1062: \ bitmask of address type (not used for now)
1063: cell% field addr-type
1064: \ if this address is an xt, this field points to the ghost
1065: cell% field addr-xt-ghost
1066: \ a bit mask that tells as what part of the cell
1067: \ is refenced from an address pointer, used for assembler generation
1068: cell% field addr-refs
1069: End-Struct addr-struct
1070:
1071: : %allocerase ( align size -- addr )
1072: dup >r %alloc dup r> erase ;
1073:
1074: \ returns the addr struct, define it if 0 reference
1075: : define-addr-struct ( addr -- struct-addr )
1076: dup @ ?dup IF nip EXIT THEN
1077: addr-struct %allocerase tuck swap ! ;
1078:
1079: >cross
1080:
1081: \ Predefined ghosts 12dec92py
1082:
1083: Ghost - drop \ need a ghost otherwise "-" would be treated as a number
1084:
1085: Ghost 0= drop
1086: Ghost branch Ghost ?branch 2drop
1087: Ghost unloop Ghost ;S 2drop
1088: Ghost lit Ghost ! 2drop
1089: Ghost noop drop
1090: Ghost over Ghost = Ghost drop 2drop drop
1091: Ghost 2drop drop
1092: Ghost 2dup drop
1093: Ghost call drop
1094: Ghost @ drop
1095: Ghost useraddr drop
1096: Ghost execute drop
1097: Ghost + drop
1098: Ghost decimal drop
1099: Ghost hex drop
1100: Ghost lit@ drop
1101: Ghost lit-perform drop
1102: Ghost lit+ drop
1103: Ghost does-exec drop
1104:
1105: Ghost :docol Ghost :doesjump Ghost :dodoes 2drop drop
1106: Ghost :dovar drop
1107:
1108: \ \ Parameter for target systems 06oct92py
1109:
1110:
1111: \ we define it ans like...
1112: wordlist Constant target-environment
1113:
1114: \ save information of current dictionary to restore with environ>
1115: Variable env-current
1116:
1117: : >ENVIRON get-current env-current ! target-environment set-current ;
1118: : ENVIRON> env-current @ set-current ;
1119:
1120: >TARGET
1121:
1122: : environment? ( addr len -- [ x ] true | false )
1123: \G returns the content of environment variable and true or
1124: \G false if not present
1125: target-environment search-wordlist
1126: IF EXECUTE true ELSE false THEN ;
1127:
1128: : $has? ( addr len -- x | false )
1129: \G returns the content of environment variable
1130: \G or false if not present
1131: T environment? H dup IF drop THEN ;
1132:
1133: : e? ( "name" -- x )
1134: \G returns the content of environment variable.
1135: \G The variable is expected to exist. If not, issue an error.
1136: bl word count T environment? H
1137: 0= ABORT" environment variable not defined!" ;
1138:
1139: : has? ( "name" --- x | false )
1140: \G returns the content of environment variable
1141: \G or false if not present
1142: bl word count T $has? H ;
1143:
1144:
1145: >ENVIRON get-order get-current swap 1+ set-order
1146: true SetValue compiler
1147: true SetValue cross
1148: true SetValue standard-threading
1149: >TARGET previous
1150:
1151: 0
1152: [IFDEF] mach-file drop mach-file count 1 [THEN]
1153: [IFDEF] machine-file drop machine-file 1 [THEN]
1154: [IF] included hex
1155: [ELSE] cr ." No machine description!" ABORT
1156: [THEN]
1157:
1158: >ENVIRON
1159:
1160: T has? ec H
1161: [IF]
1162: false DefaultValue relocate
1163: false DefaultValue file
1164: false DefaultValue OS
1165: false DefaultValue prims
1166: false DefaultValue floating
1167: false DefaultValue glocals
1168: false DefaultValue dcomps
1169: false DefaultValue hash
1170: false DefaultValue xconds
1171: false DefaultValue header
1172: false DefaultValue backtrace
1173: false DefaultValue new-input
1174: false DefaultValue peephole
1175: [THEN]
1176:
1177: true DefaultValue interpreter
1178: true DefaultValue ITC
1179: false DefaultValue rom
1180: true DefaultValue standardthreading
1181:
1182: >TARGET
1183: s" relocate" T environment? H
1184: \ JAW why set NIL to this?!
1185: [IF] drop \ SetValue NIL
1186: [ELSE] >ENVIRON X NIL SetValue relocate
1187: [THEN]
1188: >TARGET
1189:
1190: 0 Constant NIL
1191:
1192: >CROSS
1193:
1194: \ \ Create additional parameters 19jan95py
1195:
1196: \ currently cross only works for host machines with address-unit-bits
1197: \ eual to 8 because of s! and sc!
1198: \ but I start to query the environment just to modularize a little bit
1199:
1200: : check-address-unit-bits ( -- )
1201: \ s" ADDRESS-UNIT-BITS" environment?
1202: \ IF 8 <> ELSE true THEN
1203: \ ABORT" ADDRESS-UNIT-BITS unknown or not equal to 8!"
1204:
1205: \ shit, this doesn't work because environment? is only defined for
1206: \ gforth.fi and not kernl???.fi
1207: ;
1208:
1209: check-address-unit-bits
1210: 8 Constant bits/byte \ we define: byte is address-unit
1211:
1212: 1 bits/byte lshift Constant maxbyte
1213: \ this sets byte size for the target machine, (probably right guess) jaw
1214:
1215: T
1216: NIL Constant TNIL
1217: cell Constant tcell
1218: cell<< Constant tcell<<
1219: cell>bit Constant tcell>bit
1220: bits/char Constant tbits/char
1221: bits/char H bits/byte T /
1222: Constant tchar
1223: float Constant tfloat
1224: 1 bits/char lshift Constant tmaxchar
1225: [IFUNDEF] bits/byte
1226: 8 Constant tbits/byte
1227: [ELSE]
1228: bits/byte Constant tbits/byte
1229: [THEN]
1230: H
1231: tbits/char bits/byte / Constant tbyte
1232:
1233:
1234: \ Variables 06oct92py
1235:
1236: Variable image
1237: Variable (tlast)
1238: (tlast) Value tlast TNIL tlast ! \ Last name field
1239: Variable tlastcfa \ Last code field
1240: Variable bit$
1241:
1242: \ statistics 10jun97jaw
1243:
1244: Variable headers-named 0 headers-named !
1245: Variable user-vars 0 user-vars !
1246:
1247: : target>bitmask-size ( u1 -- u2 )
1248: 1- tcell>bit rshift 1+ ;
1249:
1250: : allocatetarget ( size -- adr )
1251: dup allocate ABORT" CROSS: No memory for target"
1252: swap over swap erase ;
1253:
1254: \ \ memregion.fs
1255:
1256:
1257: Variable last-defined-region \ pointer to last defined region
1258: Variable region-link \ linked list with all regions
1259: Variable mirrored-link \ linked list for mirrored regions
1260: 0 dup mirrored-link ! region-link !
1261:
1262: : >rname 8 cells + ;
1263: : >rbm 4 cells + ; \ bitfield per cell witch indicates relocation
1264: : >rmem 5 cells + ;
1265: : >rtype 6 cells + ; \ field per cell witch points to a type struct
1266: : >rrom 7 cells + ; \ a -1 indicates that this region is rom
1267: : >rlink 3 cells + ;
1268: : >rdp 2 cells + ;
1269: : >rlen cell+ ;
1270: : >rstart ;
1271:
1272: : (region) ( addr len region -- )
1273: \G change startaddress and length of an existing region
1274: >r r@ last-defined-region !
1275: r@ >rlen ! dup r@ >rstart ! r> >rdp ! ;
1276:
1277: : region ( addr len -- "name" )
1278: \G create a new region
1279: \ check whether predefined region exists
1280: save-input bl word find >r >r restore-input throw r> r> 0=
1281: IF \ make region
1282: drop
1283: save-input create restore-input throw
1284: here last-defined-region !
1285: over ( startaddr ) , ( length ) , ( dp ) ,
1286: region-link linked 0 , 0 , 0 , 0 , bl word count string,
1287: ELSE \ store new parameters in region
1288: bl word drop
1289: >body (region)
1290: THEN ;
1291:
1292: : borders ( region -- startaddr endaddr )
1293: \G returns lower and upper region border
1294: dup >rstart @ swap >rlen @ over + ;
1295:
1296: : extent ( region -- startaddr len )
1297: \G returns the really used area
1298: dup >rstart @ swap >rdp @ over - ;
1299:
1300: : area ( region -- startaddr totallen )
1301: \G returns the total area
1302: dup >rstart @ swap >rlen @ ;
1303:
1304: : mirrored ( -- )
1305: \G mark last defined region as mirrored
1306: mirrored-link
1307: align linked last-defined-region @ , ;
1308:
1309: : writeprotected
1310: \G mark a region as write protected
1311: -1 last-defined-region @ >rrom ! ;
1312:
1313: : .addr ( u -- )
1314: \G prints a 16 or 32 Bit nice hex value
1315: base @ >r hex
1316: tcell 2 u>
1317: IF s>d <# # # # # [char] . hold # # # # #> type
1318: ELSE s>d <# # # # # # #> type
1319: THEN r> base ! space ;
1320:
1321: : .regions \G display region statistic
1322:
1323: \ we want to list the regions in the right order
1324: \ so first collect all regions on stack
1325: 0 region-link @
1326: BEGIN dup WHILE dup @ REPEAT drop
1327: BEGIN dup
1328: WHILE cr
1329: 0 >rlink - >r
1330: r@ >rname count tuck type
1331: 12 swap - 0 max spaces space
1332: ." Start: " r@ >rstart @ dup .addr space
1333: ." End: " r@ >rlen @ + .addr space
1334: ." DP: " r> >rdp @ .addr
1335: REPEAT drop
1336: s" rom" T $has? H 0= ?EXIT
1337: cr ." Mirrored:"
1338: mirrored-link @
1339: BEGIN dup
1340: WHILE space dup cell+ @ >rname count type @
1341: REPEAT drop cr
1342: ;
1343:
1344: \ -------- predefined regions
1345:
1346: 0 0 region address-space
1347: \ total memory addressed and used by the target system
1348:
1349: 0 0 region dictionary
1350: \ rom area for the compiler
1351:
1352: T has? rom H
1353: [IF]
1354: 0 0 region ram-dictionary mirrored
1355: \ ram area for the compiler
1356: [ELSE]
1357: ' dictionary ALIAS ram-dictionary
1358: [THEN]
1359:
1360: 0 0 region return-stack
1361:
1362: 0 0 region data-stack
1363:
1364: 0 0 region tib-region
1365:
1366: ' dictionary ALIAS rom-dictionary
1367:
1368:
1369: : setup-target ( -- ) \G initialize target's memory space
1370: s" rom" T $has? H
1371: IF \ check for ram and rom...
1372: \ address-space area nip 0<>
1373: ram-dictionary area nip 0<>
1374: rom-dictionary area nip 0<>
1375: and 0=
1376: ABORT" CROSS: define address-space, rom- , ram-dictionary, with rom-support!"
1377: THEN
1378: address-space area nip
1379: IF
1380: address-space area
1381: ELSE
1382: dictionary area
1383: THEN
1384: nip 0=
1385: ABORT" CROSS: define at least address-space or dictionary!!"
1386:
1387: \ allocate target for each region
1388: region-link
1389: BEGIN @ dup
1390: WHILE dup
1391: 0 >rlink - >r
1392: r@ >rlen @
1393: IF \ allocate mem
1394: r@ >rlen @ allocatetarget dup image !
1395: r@ >rmem !
1396:
1397: r@ >rlen @
1398: target>bitmask-size allocatetarget
1399: dup bit$ !
1400: r@ >rbm !
1401:
1402: r@ >rlen @
1403: tcell / 1+ cells allocatetarget r@ >rtype !
1404:
1405: rdrop
1406: ELSE r> drop THEN
1407: REPEAT drop ;
1408:
1409: \ MakeKernel 22feb99jaw
1410:
1411: : makekernel ( targetsize -- )
1412: \G convenience word to setup the memory of the target
1413: \G used by main.fs of the c-engine based systems
1414: 100 swap dictionary (region)
1415: setup-target ;
1416:
1417: >MINIMAL
1418: : makekernel makekernel ;
1419: >CROSS
1420:
1421: \ \ switched tdp for rom support 03jun97jaw
1422:
1423: \ second value is here to store some maximal value for statistics
1424: \ tempdp is also embedded here but has nothing to do with rom support
1425: \ (needs switched dp)
1426:
1427: variable tempdp 0 , \ temporary dp for resolving
1428: variable tempdp-save
1429:
1430: 0 [IF]
1431: variable romdp 0 , \ Dictionary-Pointer for ramarea
1432: variable ramdp 0 , \ Dictionary-Pointer for romarea
1433:
1434: \
1435: variable sramdp \ start of ram-area for forth
1436: variable sromdp \ start of rom-area for forth
1437:
1438: [THEN]
1439:
1440: 0 Value current-region
1441: 0 Value tdp
1442: Variable fixed \ flag: true: no automatic switching
1443: \ false: switching is done automatically
1444:
1445: \ Switch-Policy:
1446: \
1447: \ a header is always compiled into rom
1448: \ after a created word (create and variable) compilation goes to ram
1449: \
1450: \ Be careful: If you want to make the data behind create into rom
1451: \ you have to put >rom before create!
1452:
1453: variable constflag constflag off
1454:
1455: : activate ( region -- )
1456: \G next code goes to this region
1457: dup to current-region >rdp to tdp ;
1458:
1459: : (switchram)
1460: fixed @ ?EXIT s" rom" T $has? H 0= ?EXIT
1461: ram-dictionary activate ;
1462:
1463: : switchram
1464: constflag @
1465: IF constflag off ELSE (switchram) THEN ;
1466:
1467: : switchrom
1468: fixed @ ?EXIT rom-dictionary activate ;
1469:
1470: : >tempdp ( addr -- )
1471: tdp tempdp-save ! tempdp to tdp tdp ! ;
1472: : tempdp> ( -- )
1473: tempdp-save @ to tdp ;
1474:
1475: : >ram fixed off (switchram) fixed on ;
1476: : >rom fixed off switchrom fixed on ;
1477: : >auto fixed off switchrom ;
1478:
1479:
1480:
1481: \ : romstart dup sromdp ! romdp ! ;
1482: \ : ramstart dup sramdp ! ramdp ! ;
1483:
1484: \ default compilation goes to rom
1485: \ when romable support is off, only the rom switch is used (!!)
1486: >auto
1487:
1488: : there tdp @ ;
1489:
1490: >TARGET
1491:
1492: \ \ Target Memory Handling
1493:
1494: \ Byte ordering and cell size 06oct92py
1495:
1496: : cell+ tcell + ;
1497: : cells tcell<< lshift ;
1498: : chars tchar * ;
1499: : char+ tchar + ;
1500: : floats tfloat * ;
1501:
1502: >CROSS
1503: : cell/ tcell<< rshift ;
1504: >TARGET
1505: 20 CONSTANT bl
1506: \ TNIL Constant NIL
1507:
1508: >CROSS
1509:
1510: bigendian
1511: [IF]
1512: : DS! ( d addr -- ) tcell bounds swap 1-
1513: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
1514: : DS@ ( addr -- d ) >r 0 0 r> tcell bounds
1515: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP ;
1516: : Sc! ( n addr -- ) >r s>d r> tchar bounds swap 1-
1517: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
1518: : Sc@ ( addr -- n ) >r 0 0 r> tchar bounds
1519: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ;
1520: [ELSE]
1521: : DS! ( d addr -- ) tcell bounds
1522: DO maxbyte ud/mod rot I c! LOOP 2drop ;
1523: : DS@ ( addr -- n ) >r 0 0 r> tcell bounds swap 1-
1524: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP ;
1525: : Sc! ( n addr -- ) >r s>d r> tchar bounds
1526: DO maxbyte ud/mod rot I c! LOOP 2drop ;
1527: : Sc@ ( addr -- n ) >r 0 0 r> tchar bounds swap 1-
1528: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ;
1529: [THEN]
1530:
1531: : S! ( n addr -- ) >r s>d r> DS! ;
1532: : S@ ( addr -- n ) DS@ d>s ;
1533:
1534: : taddr>region ( taddr -- region | 0 )
1535: \G finds for a target-address the correct region
1536: \G returns 0 if taddr is not in range of a target memory region
1537: region-link
1538: BEGIN @ dup
1539: WHILE dup >r
1540: 0 >rlink - >r
1541: r@ >rlen @
1542: IF dup r@ borders within
1543: IF r> r> drop nip EXIT THEN
1544: THEN
1545: r> drop
1546: r>
1547: REPEAT
1548: 2drop 0 ;
1549:
1550: : taddr>region-abort ( taddr -- region | 0 )
1551: \G Same as taddr>region but aborts if taddr is not
1552: \G a valid address in the target address space
1553: dup taddr>region dup 0=
1554: IF drop cr ." Wrong address: " .addr
1555: -1 ABORT" Address out of range!"
1556: THEN nip ;
1557:
1558: : (>regionimage) ( taddr -- 'taddr )
1559: dup
1560: \ find region we want to address
1561: taddr>region-abort
1562: >r
1563: \ calculate offset in region
1564: r@ >rstart @ -
1565: \ add regions real address in our memory
1566: r> >rmem @ + ;
1567:
1568: : (>regionramimage) ( taddr -- 'taddr )
1569: \G same as (>regionimage) but aborts if the region is rom
1570: dup
1571: \ find region we want to address
1572: taddr>region-abort
1573: >r
1574: r@ >rrom @ ABORT" CROSS: region is write-protected!"
1575: \ calculate offset in region
1576: r@ >rstart @ -
1577: \ add regions real address in our memory
1578: r> >rmem @ + ;
1579:
1580: : (>regionbm) ( taddr -- 'taddr bitmaskbaseaddr )
1581: dup
1582: \ find region we want to address
1583: taddr>region-abort
1584: >r
1585: \ calculate offset in region
1586: r@ >rstart @ -
1587: \ add regions real address in our memory
1588: r> >rbm @ ;
1589:
1590: : (>regiontype) ( taddr -- 'taddr )
1591: dup
1592: \ find region we want to address
1593: taddr>region-abort
1594: >r
1595: \ calculate offset in region
1596: r@ >rstart @ - tcell / cells
1597: \ add regions real address in our memory
1598: r> >rtype @ + ;
1599:
1600: \ Bit string manipulation 06oct92py
1601: \ 9may93jaw
1602: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
1603: : bits ( n -- n ) chars Bittable + c@ ;
1604:
1605: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
1606: : +bit ( addr n -- ) >bit over c@ or swap c! ;
1607: : -bit ( addr n -- ) >bit invert over c@ and swap c! ;
1608:
1609: : @relbit ( taddr -- f ) (>regionbm) swap cell/ >bit swap c@ and ;
1610:
1611: : (relon) ( taddr -- )
1612: [ [IFDEF] fd-relocation-table ]
1613: s" +" fd-relocation-table write-file throw
1614: dup s>d <# #s #> fd-relocation-table write-line throw
1615: [ [THEN] ]
1616: (>regionbm) swap cell/ +bit ;
1617:
1618: : (reloff) ( taddr -- )
1619: [ [IFDEF] fd-relocation-table ]
1620: s" -" fd-relocation-table write-file throw
1621: dup s>d <# #s #> fd-relocation-table write-line throw
1622: [ [THEN] ]
1623: (>regionbm) swap cell/ -bit ;
1624:
1625: : (>image) ( taddr -- absaddr ) image @ + ;
1626:
1627: DEFER >image
1628: DEFER >ramimage
1629: DEFER relon
1630: DEFER reloff
1631: DEFER correcter
1632:
1633: T has? relocate H
1634: [IF]
1635: ' (relon) IS relon
1636: ' (reloff) IS reloff
1637: ' (>regionimage) IS >image
1638: ' (>regionimage) IS >ramimage
1639: [ELSE]
1640: ' drop IS relon
1641: ' drop IS reloff
1642: ' (>regionimage) IS >image
1643: ' (>regionimage) IS >ramimage
1644: [THEN]
1645:
1646: : enforce-writeprotection ( -- )
1647: ['] (>regionramimage) IS >ramimage ;
1648:
1649: : relax-writeprotection ( -- )
1650: ['] (>regionimage) IS >ramimage ;
1651:
1652: : writeprotection-relaxed? ( -- )
1653: ['] >ramimage >body @ ['] (>regionimage) = ;
1654:
1655: \ Target memory access 06oct92py
1656:
1657: : align+ ( taddr -- rest )
1658: tcell tuck 1- and - [ tcell 1- ] Literal and ;
1659: : cfalign+ ( taddr -- rest )
1660: \ see kernel.fs:cfaligned
1661: /maxalign tuck 1- and - [ /maxalign 1- ] Literal and ;
1662:
1663: >TARGET
1664: : aligned ( taddr -- ta-addr ) dup align+ + ;
1665: \ assumes cell alignment granularity (as GNU C)
1666:
1667: : cfaligned ( taddr1 -- taddr2 )
1668: \ see kernel.fs
1669: dup cfalign+ + ;
1670:
1671: : @ ( taddr -- w ) >image S@ ;
1672: : ! ( w taddr -- ) >ramimage S! ;
1673: : c@ ( taddr -- char ) >image Sc@ ;
1674: : c! ( char taddr -- ) >ramimage Sc! ;
1675: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
1676: : 2! ( x1 x2 taddr -- ) T tuck ! cell+ ! H ;
1677:
1678: \ Target compilation primitives 06oct92py
1679: \ included A! 16may93jaw
1680:
1681: : here ( -- there ) there ;
1682: : allot ( n -- ) tdp +! ;
1683: : , ( w -- ) T here H tcell T allot ! H ;
1684: : c, ( char -- ) T here H tchar T allot c! H ;
1685: : align ( -- ) T here H align+ 0 ?DO bl T c, H tchar +LOOP ;
1686: : cfalign ( -- )
1687: T here H cfalign+ 0 ?DO bl T c, H tchar +LOOP ;
1688:
1689: : >address dup 0>= IF tbyte / THEN ; \ ?? jaw
1690: : A! swap >address swap dup relon T ! H ;
1691: : A, ( w -- ) >address T here H relon T , H ;
1692:
1693: \ high-level ghosts
1694:
1695: >CROSS
1696:
1697: Ghost (do) Ghost (?do) 2drop
1698: Ghost (for) drop
1699: Ghost (loop) Ghost (+loop) 2drop
1700: Ghost (next) drop
1701: Ghost (does>) Ghost (compile) 2drop
1702: Ghost (.") Ghost (S") Ghost (ABORT") 2drop drop
1703: Ghost (C") drop
1704: Ghost ' drop
1705:
1706: \ user ghosts
1707:
1708: Ghost state drop
1709:
1710: \ \ -------------------- Host/Target copy etc. 29aug01jaw
1711:
1712:
1713: >CROSS
1714:
1715: : TD! >image DS! ;
1716: : TD@ >image DS@ ;
1717:
1718: : th-count ( taddr -- host-addr len )
1719: \G returns host address of target string
1720: assert1( tbyte 1 = )
1721: dup X c@ swap X char+ >image swap ;
1722:
1723: : ht-move ( haddr taddr len -- )
1724: \G moves data from host-addr to destination in target-addr
1725: \G character by character
1726: swap -rot bounds ?DO I c@ over X c! X char+ LOOP drop ;
1727:
1728: 2Variable last-string
1729:
1730: : ht-string, ( addr count -- )
1731: dup there swap last-string 2!
1732: dup T c, H bounds ?DO I c@ T c, H LOOP ;
1733:
1734: >TARGET
1735:
1736: : count dup X c@ swap X char+ swap ;
1737:
1738: : on -1 -1 rot TD! ;
1739: : off T 0 swap ! H ;
1740:
1741: : tcmove ( source dest len -- )
1742: \G cmove in target memory
1743: tchar * bounds
1744: ?DO dup T c@ H I T c! H 1+
1745: tchar +LOOP drop ;
1746:
1747: : td, ( d -- )
1748: \G Store a host value as one cell into the target
1749: there tcell X allot TD! ;
1750:
1751: \ \ Load Assembler
1752:
1753: >TARGET
1754: H also Forth definitions
1755:
1756: \ FIXME: should we include the assembler really in the forth
1757: \ dictionary?!?!?!? This conflicts with the existing assembler
1758: \ of the host forth system!!
1759: [IFDEF] asm-include asm-include [THEN] hex
1760:
1761: previous
1762:
1763:
1764: >CROSS
1765:
1766: : (cc) T a, H ; ' (cc) plugin-of colon,
1767: : (prim) T a, H ; ' (prim) plugin-of prim,
1768:
1769: : (cr) >tempdp colon, tempdp> ; ' (cr) plugin-of colon-resolve
1770: : (ar) T ! H ; ' (ar) plugin-of addr-resolve
1771: : (dr) ( ghost res-pnt target-addr addr )
1772: >tempdp drop over
1773: dup >magic @ <do:> =
1774: IF doer,
1775: ELSE dodoes,
1776: THEN
1777: tempdp> ; ' (dr) plugin-of doer-resolve
1778:
1779: : (cm) ( -- addr )
1780: there -1 colon, ; ' (cm) plugin-of colonmark,
1781:
1782: >TARGET
1783: : compile, ( xt -- )
1784: dup xt>ghost >comp @ EXECUTE ;
1785: >CROSS
1786:
1787: \ resolve structure
1788:
1789: : >next ; \ link to next field
1790: : >tag cell+ ; \ indecates type of reference: 0: call, 1: address, 2: doer
1791: : >taddr cell+ cell+ ;
1792: : >ghost 3 cells + ;
1793: : >file 4 cells + ;
1794: : >line 5 cells + ;
1795:
1796: : (refered) ( ghost addr tag -- )
1797: \G creates a reference to ghost at address taddr
1798: >space
1799: rot >link linked
1800: ( taddr tag ) ,
1801: ( taddr ) ,
1802: last-header-ghost @ ,
1803: loadfile ,
1804: sourceline# ,
1805: space>
1806: ;
1807:
1808: : refered ( ghost tag -- )
1809: \G creates a resolve structure
1810: T here aligned H swap (refered)
1811: ;
1812:
1813: : killref ( addr ghost -- )
1814: \G kills a forward reference to ghost at position addr
1815: \G this is used to eleminate a :dovar refence after making a DOES>
1816: dup >magic @ <fwd> <> IF 2drop EXIT THEN
1817: swap >r >link
1818: BEGIN dup @ dup ( addr last this )
1819: WHILE dup >taddr @ r@ =
1820: IF @ over !
1821: ELSE nip THEN
1822: REPEAT rdrop 2drop
1823: ;
1824:
1825: Defer resolve-warning
1826:
1827: : reswarn-test ( ghost res-struct -- ghost res-struct )
1828: over cr ." Resolving " .ghost dup ." in " >ghost @ .ghost ;
1829:
1830: : reswarn-forward ( ghost res-struct -- ghost res-struct )
1831: over warnhead .ghost dup ." is referenced in "
1832: >ghost @ .ghost ;
1833:
1834: \ ' reswarn-test IS resolve-warning
1835:
1836: \ resolve 14oct92py
1837:
1838: : resolve-loop ( ghost resolve-list tcfa -- )
1839: >r
1840: BEGIN dup WHILE
1841: \ dup >tag @ 2 = IF reswarn-forward THEN
1842: resolve-warning
1843: r@ over >taddr @
1844: 2 pick >tag @
1845: CASE 0 OF colon-resolve ENDOF
1846: 1 OF addr-resolve ENDOF
1847: 2 OF doer-resolve ENDOF
1848: ENDCASE
1849: @ \ next list element
1850: REPEAT 2drop rdrop
1851: ;
1852:
1853: \ : resolve-loop ( ghost tcfa -- ghost tcfa )
1854: \ >r dup >link @
1855: \ BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
1856:
1857: \ exists 9may93jaw
1858:
1859: : exists ( ghost tcfa -- )
1860: \G print warning and set new target link in ghost
1861: swap exists-warning
1862: >link ! ;
1863:
1864: : colon-resolved ( ghost -- )
1865: \ compiles a call to a colon definition,
1866: \ compile action for >comp field
1867: >link @ colon, ;
1868:
1869: : prim-resolved ( ghost -- )
1870: \ compiles a call to a primitive
1871: >link @ prim, ;
1872:
1873: : (is-forward) ( ghost -- )
1874: colonmark, 0 (refered) ; \ compile space for call
1875: ' (is-forward) IS is-forward
1876:
1877: 0 Value resolved
1878:
1879: : resolve-forward-references ( ghost resolve-list -- )
1880: \ loop through forward referencies
1881: comp-state @ >r Resolving comp-state !
1882: over >link @ resolve-loop
1883: r> comp-state !
1884:
1885: ['] noop IS resolve-warning ;
1886:
1887:
1888: : (resolve) ( ghost tcfa -- ghost resolve-list )
1889: \ check for a valid address, it is a primitive reference
1890: \ otherwise
1891: dup taddr>region 0<> IF
1892: \ define this address in the region address type table
1893: 2dup (>regiontype) define-addr-struct addr-xt-ghost
1894: \ we define new address only if empty
1895: \ this is for not to take over the alias ghost
1896: \ (different ghost, but identical xt)
1897: \ but the very first that really defines it
1898: dup @ 0= IF ! ELSE 2drop THEN
1899: THEN
1900: swap >r
1901: r@ to resolved
1902:
1903: \ r@ >comp @ ['] is-forward =
1904: \ ABORT" >comp action not set on a resolved ghost"
1905:
1906: \ copmile action defaults to colon-resolved
1907: \ if this is not right something must be set before
1908: \ calling resolve
1909: r@ >comp @ ['] is-forward = IF
1910: ['] colon-resolved r@ >comp !
1911: THEN
1912: r@ >link @ swap \ ( list tcfa R: ghost )
1913: \ mark ghost as resolved
1914: r@ >link ! <res> r@ >magic !
1915: r> swap ;
1916:
1917: : resolve ( ghost tcfa -- )
1918: \G resolve referencies to ghost with tcfa
1919: \ is ghost resolved?, second resolve means another
1920: \ definition with the same name
1921: over undefined? 0= IF exists EXIT THEN
1922: (resolve)
1923: ( ghost resolve-list )
1924: resolve-forward-references ;
1925:
1926: : resolve-noforwards ( ghost tcfa -- )
1927: \G Same as resolve but complain if there are any
1928: \G forward references on this ghost
1929: \ is ghost resolved?, second resolve means another
1930: \ definition with the same name
1931: over undefined? 0= IF exists EXIT THEN
1932: (resolve)
1933: IF cr ." No forward references allowed on: " .ghost cr
1934: -1 ABORT" Illegal forward reference"
1935: THEN
1936: drop ;
1937:
1938: \ gexecute ghost, 01nov92py
1939:
1940: : (gexecute) ( ghost -- )
1941: dup >comp @ EXECUTE ;
1942:
1943: : gexecute ( ghost -- )
1944: dup >magic @ <imm> = ABORT" CROSS: gexecute on immediate word"
1945: (gexecute) ;
1946:
1947: : addr, ( ghost -- )
1948: dup forward? IF 1 refered 0 T a, H ELSE >link @ T a, H THEN ;
1949:
1950: \ .unresolved 11may93jaw
1951:
1952: variable ResolveFlag
1953:
1954: \ ?touched 11may93jaw
1955:
1956: : ?touched ( ghost -- flag ) dup forward? swap >link @
1957: 0 <> and ;
1958:
1959: : .forwarddefs ( ghost -- )
1960: ." appeared in:"
1961: >link
1962: BEGIN @ dup
1963: WHILE cr 5 spaces
1964: dup >ghost @ .ghost
1965: ." file " dup >file @ ?dup IF count type ELSE ." CON" THEN
1966: ." line " dup >line @ .dec
1967: REPEAT
1968: drop ;
1969:
1970: : ?resolved ( ghost -- )
1971: dup ?touched
1972: IF ResolveFlag on
1973: dup cr .ghost .forwarddefs
1974: ELSE drop
1975: THEN ;
1976:
1977: : .unresolved ( -- )
1978: ResolveFlag off cr ." Unresolved: "
1979: ghost-list
1980: BEGIN @ dup
1981: WHILE dup ?resolved
1982: REPEAT drop ResolveFlag @
1983: IF
1984: -1 abort" Unresolved words!"
1985: ELSE
1986: ." Nothing!"
1987: THEN
1988: cr ;
1989:
1990: : .stats
1991: base @ >r decimal
1992: cr ." named Headers: " headers-named @ .
1993: r> base ! ;
1994:
1995: >MINIMAL
1996:
1997: : .unresolved .unresolved ;
1998:
1999: >CROSS
2000: \ Header states 12dec92py
2001:
2002: \ : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
2003: bigendian [IF] 0 [ELSE] tcell 1- [THEN] Constant flag+
2004: : flag! ( w -- ) tlast @ flag+ + dup >r T c@ xor r> c! H ;
2005:
2006: VARIABLE ^imm
2007:
2008: \ !! should be target wordsize specific
2009: $80 constant alias-mask
2010: $40 constant immediate-mask
2011: $20 constant restrict-mask
2012:
2013: >TARGET
2014: : immediate immediate-mask flag!
2015: ^imm @ @ dup <imm> = IF drop EXIT THEN
2016: <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
2017: <imm> ^imm @ ! ;
2018: : restrict restrict-mask flag! ;
2019:
2020: : isdoer
2021: \G define a forth word as doer, this makes obviously only sence on
2022: \G forth processors such as the PSC1000
2023: <do:> last-header-ghost @ >magic ! ;
2024: >CROSS
2025:
2026: \ Target Header Creation 01nov92py
2027:
2028: : ht-lstring, ( addr count -- )
2029: dup T , H bounds ?DO I c@ T c, H LOOP ;
2030:
2031: >TARGET
2032: : name, ( "name" -- ) bl word count ht-lstring, X cfalign ;
2033: : view, ( -- ) ( dummy ) ;
2034: >CROSS
2035:
2036: \ Target Document Creation (goes to crossdoc.fd) 05jul95py
2037:
2038: s" ./doc/crossdoc.fd" r/w create-file throw value doc-file-id
2039: \ contains the file-id of the documentation file
2040:
2041: : T-\G ( -- )
2042: source >in @ /string doc-file-id write-line throw
2043: postpone \ ;
2044:
2045: Variable to-doc to-doc on
2046:
2047: : cross-doc-entry ( -- )
2048: to-doc @ tlast @ 0<> and \ not an anonymous (i.e. noname) header
2049: IF
2050: s" " doc-file-id write-line throw
2051: s" make-doc " doc-file-id write-file throw
2052:
2053: Last-Header-Ghost @ >ghostname doc-file-id write-file throw
2054: >in @
2055: [char] ( parse 2drop
2056: [char] ) parse doc-file-id write-file throw
2057: s" )" doc-file-id write-file throw
2058: [char] \ parse 2drop
2059: T-\G
2060: >in !
2061: THEN ;
2062:
2063: \ Target TAGS creation
2064:
2065: s" kernel.TAGS" r/w create-file throw value tag-file-id
2066: s" kernel.tags" r/w create-file throw value vi-tag-file-id
2067: \ contains the file-id of the tags file
2068:
2069: Create tag-beg 2 c, 7F c, bl c,
2070: Create tag-end 2 c, bl c, 01 c,
2071: Create tag-bof 1 c, 0C c,
2072: Create tag-tab 1 c, 09 c,
2073:
2074: 2variable last-loadfilename 0 0 last-loadfilename 2!
2075:
2076: : put-load-file-name ( -- )
2077: sourcefilename last-loadfilename 2@ d<>
2078: IF
2079: tag-bof count tag-file-id write-line throw
2080: sourcefilename 2dup
2081: tag-file-id write-file throw
2082: last-loadfilename 2!
2083: s" ,0" tag-file-id write-line throw
2084: THEN ;
2085:
2086: : cross-gnu-tag-entry ( -- )
2087: tlast @ 0<> \ not an anonymous (i.e. noname) header
2088: IF
2089: put-load-file-name
2090: source >in @ min tag-file-id write-file throw
2091: tag-beg count tag-file-id write-file throw
2092: Last-Header-Ghost @ >ghostname tag-file-id write-file throw
2093: tag-end count tag-file-id write-file throw
2094: base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw
2095: \ >in @ 0 <# #s [char] , hold #> tag-file-id write-line throw
2096: s" ,0" tag-file-id write-line throw
2097: base !
2098: THEN ;
2099:
2100: : cross-vi-tag-entry ( -- )
2101: tlast @ 0<> \ not an anonymous (i.e. noname) header
2102: IF
2103: sourcefilename vi-tag-file-id write-file throw
2104: tag-tab count vi-tag-file-id write-file throw
2105: Last-Header-Ghost @ >ghostname vi-tag-file-id write-file throw
2106: tag-tab count vi-tag-file-id write-file throw
2107: s" /^" vi-tag-file-id write-file throw
2108: source vi-tag-file-id write-file throw
2109: s" $/" vi-tag-file-id write-line throw
2110: THEN ;
2111:
2112: : cross-tag-entry ( -- )
2113: cross-gnu-tag-entry
2114: cross-vi-tag-entry ;
2115:
2116: \ Check for words
2117:
2118: Defer skip? ' false IS skip?
2119:
2120: : skipdef ( "name" -- )
2121: \G skip definition of an undefined word in undef-words and
2122: \G all-words mode
2123: Ghost dup forward?
2124: IF >magic <skip> swap !
2125: ELSE drop THEN ;
2126:
2127: : tdefined? ( "name" -- flag )
2128: Ghost undefined? 0= ;
2129:
2130: : defined2? ( "name" -- flag )
2131: \G return true for anything else than forward, even for <skip>
2132: \G that's what we want
2133: Ghost forward? 0= ;
2134:
2135: : forced? ( "name" -- flag )
2136: \G return ture if it is a foreced skip with defskip
2137: Ghost >magic @ <skip> = ;
2138:
2139: : needed? ( -- flag ) \ name
2140: \G returns a false flag when
2141: \G a word is not defined
2142: \G a forward reference exists
2143: \G so the definition is not skipped!
2144: bl word gfind
2145: IF dup undefined?
2146: nip
2147: 0=
2148: ELSE drop true THEN ;
2149:
2150: : doer? ( -- flag ) \ name
2151: Ghost >magic @ <do:> = ;
2152:
2153: : skip-defs ( -- )
2154: BEGIN refill WHILE source -trailing nip 0= UNTIL THEN ;
2155:
2156: \ Target header creation
2157:
2158: Variable NoHeaderFlag
2159: NoHeaderFlag off
2160:
2161: : 0.r ( n1 n2 -- )
2162: base @ >r hex
2163: 0 swap <# 0 ?DO # LOOP #> type
2164: r> base ! ;
2165:
2166: : .sym ( adr len -- )
2167: \G escapes / and \ to produce sed output
2168: bounds
2169: DO I c@ dup
2170: CASE [char] / OF drop ." \/" ENDOF
2171: [char] \ OF drop ." \\" ENDOF
2172: dup OF emit ENDOF
2173: ENDCASE
2174: LOOP ;
2175:
2176: Defer setup-execution-semantics
2177: 0 Value lastghost
2178:
2179: : (THeader ( "name" -- ghost )
2180: \ >in @ bl word count type 2 spaces >in !
2181: \ wordheaders will always be compiled to rom
2182: switchrom
2183: \ build header in target
2184: NoHeaderFlag @
2185: IF NoHeaderFlag off
2186: ELSE
2187: T align H view,
2188: tlast @ dup 0> IF tcell - THEN T A, H there tlast !
2189: 1 headers-named +! \ Statistic
2190: >in @ T name, H >in !
2191: THEN
2192: T cfalign here H tlastcfa !
2193: \ Old Symbol table sed-script
2194: \ >in @ cr ." sym:s/CFA=" there 4 0.r ." /" bl word count .sym ." /g" cr >in !
2195: HeaderGhost
2196: \ output symbol table to extra file
2197: dup >ghostname there symentry
2198: dup Last-Header-Ghost ! dup to lastghost
2199: dup >magic ^imm ! \ a pointer for immediate
2200: alias-mask flag!
2201: cross-doc-entry cross-tag-entry
2202: setup-execution-semantics
2203: ;
2204:
2205: \ this is the resolver information from ":"
2206: \ resolving is done by ";"
2207: Variable ;Resolve 1 cells allot
2208:
2209: : hereresolve ( ghost -- )
2210: there resolve 0 ;Resolve ! ;
2211:
2212: : Theader ( "name" -- ghost )
2213: (THeader dup hereresolve ;
2214:
2215: Variable aprim-nr -20 aprim-nr !
2216:
2217: : copy-execution-semantics ( ghost-from ghost-dest -- )
2218: >r
2219: dup >exec @ r@ >exec !
2220: dup >comp @ r@ >comp !
2221: dup >exec2 @ r@ >exec2 !
2222: dup >exec-compile @ r@ >exec-compile !
2223: dup >ghost-xt @ r@ >ghost-xt !
2224: dup >created @ r@ >created !
2225: rdrop drop ;
2226:
2227: >TARGET
2228:
2229: : Alias ( cfa -- ) \ name
2230: >in @ skip? IF 2drop EXIT THEN >in !
2231: (THeader ( S xt ghost )
2232: 2dup swap xt>ghost swap copy-execution-semantics
2233: over resolve T A, H alias-mask flag! ;
2234:
2235: Variable last-prim-ghost
2236: 0 last-prim-ghost !
2237:
2238: : asmprimname, ( ghost -- : name )
2239: dup last-prim-ghost !
2240: >r
2241: here bl word count string, r@ >asm-name !
2242: aprim-nr @ r> >asm-dummyaddr ! ;
2243:
2244: Defer setup-prim-semantics
2245:
2246: : mapprim ( "forthname" "asmlabel" -- )
2247: THeader -1 aprim-nr +! aprim-nr @ T A, H
2248: asmprimname,
2249: setup-prim-semantics ;
2250:
2251: : mapprim: ( "forthname" "asmlabel" -- )
2252: -1 aprim-nr +! aprim-nr @
2253: Ghost tuck swap resolve-noforwards <do:> swap tuck >magic !
2254: asmprimname, ;
2255:
2256: : Doer: ( cfa -- ) \ name
2257: >in @ skip? IF 2drop EXIT THEN >in !
2258: dup 0< s" prims" T $has? H 0= and
2259: IF
2260: .sourcepos ." needs doer: " >in @ bl word count type >in ! cr
2261: THEN
2262: Ghost
2263: tuck swap resolve-noforwards <do:> swap >magic ! ;
2264:
2265: Variable prim#
2266: : first-primitive ( n -- ) prim# ! ;
2267: : Primitive ( -- ) \ name
2268: >in @ skip? IF drop EXIT THEN >in !
2269: s" prims" T $has? H 0=
2270: IF
2271: .sourcepos ." needs prim: " >in @ bl word count type >in ! cr
2272: THEN
2273: prim# @ (THeader ( S xt ghost )
2274: ['] prim-resolved over >comp !
2275: dup >ghost-flags <primitive> set-flag
2276: over resolve-noforwards T A, H alias-mask flag!
2277: -1 prim# +! ;
2278: >CROSS
2279:
2280: \ Conditionals and Comments 11may93jaw
2281:
2282: \G saves the existing cond action, this is used for redefining in
2283: \G instant
2284: Variable cond-xt-old
2285:
2286: : cond-target ( -- )
2287: \G Compiles semantic of redefined cond into new one
2288: cond-xt-old @ compile, ; immediate restrict
2289:
2290: : ;Cond
2291: postpone ;
2292: swap ! ; immediate
2293:
2294: : Cond: ( "name" -- )
2295: \g defines a conditional or another word that must
2296: \g be executed directly while compiling
2297: \g these words have no interpretative semantics by default
2298: Ghost
2299: >exec-compile
2300: dup @ cond-xt-old !
2301: :NONAME ;
2302:
2303:
2304: : Comment ( -- )
2305: >in @ Ghost swap >in ! ' swap
2306: 2dup >exec-compile ! >exec ! ;
2307:
2308: Comment ( Comment \
2309:
2310: \ compile 10may93jaw
2311:
2312: : compile ( "name" -- ) \ name
2313: findghost
2314: dup >exec-compile @ ?dup
2315: IF nip compile,
2316: ELSE postpone literal postpone gexecute THEN ; immediate restrict
2317:
2318: >TARGET
2319:
2320: : ' ( -- xt )
2321: \G returns the target-cfa of a ghost
2322: bl word gfind 0= ABORT" CROSS: Ghost don't exists"
2323: g>xt ;
2324:
2325: \ FIXME: this works for the current use cases, but is not
2326: \ in all cases correct ;-)
2327: : comp' X ' 0 ;
2328:
2329: Cond: ['] T ' H alit, ;Cond
2330:
2331: >CROSS
2332:
2333: : [T']
2334: \ returns the target-cfa of a ghost, or compiles it as literal
2335: postpone [G']
2336: state @ IF postpone g>xt ELSE g>xt THEN ; immediate
2337:
2338: \ \ threading modell 13dec92py
2339: \ modularized 14jun97jaw
2340:
2341: T 2 cells H Value xt>body
2342:
2343: : (>body) ( cfa -- pfa )
2344: xt>body + ; ' (>body) plugin-of t>body
2345:
2346: : fillcfa ( usedcells -- )
2347: T cells H xt>body swap -
2348: assert1( dup 0 >= )
2349: 0 ?DO 0 X c, tchar +LOOP ;
2350:
2351: : (doer,) ( ghost -- )
2352: addr, 1 fillcfa ; ' (doer,) plugin-of doer,
2353:
2354: : (docol,) ( -- ) [G'] :docol (doer,) ; ' (docol,) plugin-of docol,
2355:
2356: ' NOOP plugin-of ca>native
2357:
2358: : (doprim,) ( -- )
2359: there xt>body + ca>native T a, H 1 fillcfa ; ' (doprim,) plugin-of doprim,
2360:
2361: : (doeshandler,) ( -- )
2362: T cfalign H [G'] :doesjump addr, T 0 , H ; ' (doeshandler,) plugin-of doeshandler,
2363:
2364: : (dodoes,) ( does-action-ghost -- )
2365: ]comp [G'] :dodoes addr, comp[
2366: addr,
2367: \ the relocator in the c engine, does not like the
2368: \ does-address to marked for relocation
2369: [ T e? ec H 0= [IF] ] T here H tcell - reloff [ [THEN] ]
2370: 2 fillcfa ; ' (dodoes,) plugin-of dodoes,
2371:
2372: : (dlit,) ( n -- ) compile lit td, ; ' (dlit,) plugin-of dlit,
2373:
2374: : (lit,) ( n -- ) s>d dlit, ; ' (lit,) plugin-of lit,
2375:
2376: \ if we dont produce relocatable code alit, defaults to lit, jaw
2377: \ this is just for convenience, so we don't have to define alit,
2378: \ seperately for embedded systems....
2379: T has? relocate H
2380: [IF]
2381: : (alit,) ( n -- ) compile lit T a, H ; ' (alit,) plugin-of alit,
2382: [ELSE]
2383: : (alit,) ( n -- ) lit, ; ' (alit,) plugin-of alit,
2384: [THEN]
2385:
2386: : (fini,) compile ;s ; ' (fini,) plugin-of fini,
2387:
2388: [IFUNDEF] (code)
2389: Defer (code)
2390: Defer (end-code)
2391: [THEN]
2392:
2393: >TARGET
2394: : Code
2395: defempty?
2396: (THeader ( ghost )
2397: ['] prim-resolved over >comp !
2398: there resolve-noforwards
2399:
2400: [ T e? prims H 0= [IF] T e? ITC H [ELSE] true [THEN] ] [IF]
2401: doprim,
2402: [THEN]
2403: depth (code) ;
2404:
2405: \ FIXME : no-compile -1 ABORT" this ghost is not for compilation" ;
2406:
2407: : Code:
2408: defempty?
2409: Ghost >r
2410: r@ >ghostname there symentry
2411: r@ there ca>native resolve-noforwards
2412: <do:> r@ >magic !
2413: r> drop
2414: depth (code) ;
2415:
2416: : end-code
2417: (end-code)
2418: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
2419: ELSE true ABORT" CROSS: Stack empty" THEN
2420: ;
2421:
2422: >CROSS
2423:
2424: \ tLiteral 12dec92py
2425:
2426: >TARGET
2427: Cond: \G T-\G ;Cond
2428:
2429: Cond: Literal ( n -- ) lit, ;Cond
2430: Cond: ALiteral ( n -- ) alit, ;Cond
2431:
2432: : Char ( "<char>" -- ) bl word char+ c@ ;
2433: Cond: [Char] ( "<char>" -- ) Char lit, ;Cond
2434:
2435: tchar 1 = [IF]
2436: Cond: chars ;Cond
2437: [THEN]
2438:
2439: \ some special literals 27jan97jaw
2440:
2441: Cond: MAXU
2442: -1 s>d dlit,
2443: ;Cond
2444:
2445: tcell 2 = tcell 4 = or tcell 8 = or 0=
2446: [IF]
2447: .( Warning: MINI and MAXI may not work with this host) cr
2448: [THEN]
2449:
2450: Cond: MINI
2451: tcell 2 = IF $8000 ELSE $80000000 THEN 0
2452: tcell 8 = IF swap THEN dlit,
2453: ;Cond
2454:
2455: Cond: MAXI
2456: tcell 2 = IF $7fff ELSE $7fffffff THEN 0
2457: tcell 8 = IF drop -1 swap THEN dlit,
2458: ;Cond
2459:
2460: >CROSS
2461:
2462: \ Target compiling loop 12dec92py
2463: \ ">tib trick thrown out 10may93jaw
2464: \ number? defined at the top 11may93jaw
2465: \ replaced >in by save-input
2466:
2467: : discard 0 ?DO drop LOOP ;
2468:
2469: \ compiled word might leave items on stack!
2470: : tcom ( x1 .. xn n name -- )
2471: \ dup count type space
2472: gfind
2473: IF >r ( discard saved input state ) discard r>
2474: dup >exec-compile @ ?dup
2475: IF nip execute-exec-compile ELSE gexecute THEN
2476: EXIT
2477: THEN
2478: number? dup
2479: IF 0> IF swap lit, THEN lit, discard
2480: ELSE 2drop restore-input throw Ghost gexecute THEN ;
2481:
2482: \ : ; DOES> 13dec92py
2483: \ ] 9may93py/jaw
2484:
2485: >CROSS
2486:
2487: : compiling-state ( -- )
2488: \G set states to compililng
2489: Compiling comp-state !
2490: \ if we have a state in target, change it with the compile state
2491: [G'] state dup undefined? 0=
2492: IF >ghost-xt @ execute X on ELSE drop THEN ;
2493:
2494: : interpreting-state ( -- )
2495: \G set states to interpreting
2496: \ if target has a state variable, change it according to our state
2497: [G'] state dup undefined? 0=
2498: IF >ghost-xt @ execute X off ELSE drop THEN
2499: Interpreting comp-state ! ;
2500:
2501: >TARGET
2502:
2503: : ]
2504: compiling-state
2505: BEGIN
2506: BEGIN save-input bl word
2507: dup c@ 0= WHILE drop discard refill 0=
2508: ABORT" CROSS: End of file while target compiling"
2509: REPEAT
2510: tcom
2511: compiling? 0=
2512: UNTIL ;
2513:
2514: \ by the way: defining a second interpreter (a compiler-)loop
2515: \ is not allowed if a system should be ans conform
2516:
2517: : (:) ( ghost -- )
2518: \ common factor of : and :noname. Prepare ;Resolve and start definition
2519: ;Resolve ! there ;Resolve cell+ !
2520: docol, ]comp colon-start depth T ] H ;
2521:
2522: : : ( -- colon-sys ) \ Name
2523: defempty?
2524: constflag off \ don't let this flag work over colon defs
2525: \ just to go sure nothing unwanted happens
2526: >in @ skip? IF drop skip-defs EXIT THEN >in !
2527: (THeader (:) ;
2528:
2529: : :noname ( -- colon-sys )
2530: X cfalign there
2531: \ define a nameless ghost
2532: here ghostheader dup last-header-ghost ! dup to lastghost
2533: (:) ;
2534:
2535: Cond: EXIT ( -- ) compile ;S ;Cond
2536:
2537: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
2538:
2539: >CROSS
2540: : LastXT ;Resolve @ 0= abort" CROSS: no definition for LastXT"
2541: ;Resolve cell+ @ ;
2542:
2543: >TARGET
2544:
2545: Cond: recurse ( -- ) Last-Header-Ghost @ gexecute ;Cond
2546:
2547: Cond: ; ( -- )
2548: depth ?dup
2549: IF 1- <> ABORT" CROSS: Stack changed"
2550: ELSE true ABORT" CROSS: Stack empty"
2551: THEN
2552: colon-end
2553: fini,
2554: comp[
2555: ;Resolve @
2556: IF ['] colon-resolved ;Resolve @ >comp !
2557: ;Resolve @ ;Resolve cell+ @ resolve
2558: THEN
2559: interpreting-state
2560: ;Cond
2561:
2562: Cond: [ ( -- ) interpreting-state ;Cond
2563:
2564: >CROSS
2565:
2566: 0 Value created
2567:
2568: : !does ( does-action -- )
2569: tlastcfa @ [G'] :dovar killref
2570: >space here >r ghostheader space>
2571: ['] colon-resolved r@ >comp !
2572: r@ created >do:ghost ! r@ swap resolve
2573: r> tlastcfa @ >tempdp dodoes, tempdp> ;
2574:
2575: Defer instant-interpret-does>-hook
2576:
2577: : does-resolved ( ghost -- )
2578: compile does-exec g>xt T a, H ;
2579:
2580: : resolve-does>-part ( -- )
2581: \ resolve words made by builders
2582: Last-Header-Ghost @ >do:ghost @ ?dup
2583: IF there resolve THEN ;
2584:
2585: >TARGET
2586: Cond: DOES>
2587: compile (does>) doeshandler,
2588: resolve-does>-part
2589: ;Cond
2590:
2591: : DOES>
2592: ['] does-resolved created >comp !
2593: switchrom doeshandler, T here H !does
2594: instant-interpret-does>-hook
2595: depth T ] H ;
2596:
2597: >CROSS
2598: \ Creation 01nov92py
2599:
2600: \ Builder 11may93jaw
2601:
2602: 0 Value built
2603:
2604: : Builder ( Create-xt do-ghost "name" -- )
2605: \ builds up a builder in current vocabulary
2606: \ create-xt is executed when word is interpreted
2607: \ do:-xt is executed when the created word from builder is executed
2608: \ for do:-xt an additional entry after the normal ghost-entrys is used
2609:
2610: ghost to built
2611: built >created @ 0= IF
2612: built >created on
2613: THEN ;
2614:
2615: : gdoes, ( ghost -- )
2616: \ makes the codefield for a word that is built
2617: >do:ghost @ dup undefined? 0=
2618: IF
2619: dup >magic @ <do:> =
2620: IF doer,
2621: ELSE dodoes,
2622: THEN
2623: EXIT
2624: THEN
2625: \ compile :dodoes gexecute
2626: \ T here H tcell - reloff
2627: 2 refered
2628: 0 fillcfa
2629: ;
2630:
2631: : takeover-x-semantics ( S constructor-ghost new-ghost -- )
2632: \g stores execution semantic and compilation semantic in the built word
2633: swap >do:ghost @ 2dup swap >do:ghost !
2634: \ we use the >exec2 field for the semantic of a created word,
2635: \ using exec or exec2 makes no difference for normal cross-compilation
2636: \ but is usefull for instant where the exec field is already
2637: \ defined (e.g. Vocabularies)
2638: 2dup >exec @ swap >exec2 !
2639: >comp @ swap >comp ! ;
2640:
2641: 0 Value createhere
2642:
2643: : create-resolve ( -- )
2644: created createhere resolve 0 ;Resolve ! ;
2645: : create-resolve-immediate ( -- )
2646: create-resolve T immediate H ;
2647:
2648: : TCreate ( <name> -- )
2649: create-forward-warn
2650: IF ['] reswarn-forward IS resolve-warning THEN
2651: executed-ghost @ (Theader
2652: dup >created on dup to created
2653: 2dup takeover-x-semantics
2654: there to createhere drop gdoes, ;
2655:
2656: : RTCreate ( <name> -- )
2657: \ creates a new word with code-field in ram
2658: create-forward-warn
2659: IF ['] reswarn-forward IS resolve-warning THEN
2660: \ make Alias
2661: executed-ghost @ (THeader
2662: dup >created on dup to created
2663: 2dup takeover-x-semantics
2664: there 0 T a, H alias-mask flag!
2665: \ store poiter to code-field
2666: switchram T cfalign H
2667: there swap T ! H
2668: there tlastcfa !
2669: there to createhere drop gdoes, ;
2670:
2671: : Build: ( -- [xt] [colon-sys] )
2672: :noname postpone TCreate ;
2673:
2674: : BuildSmart: ( -- [xt] [colon-sys] )
2675: :noname
2676: [ T has? rom H [IF] ]
2677: postpone RTCreate
2678: [ [ELSE] ]
2679: postpone TCreate
2680: [ [THEN] ] ;
2681:
2682: : ;Build
2683: postpone create-resolve postpone ; built >exec ! ; immediate
2684:
2685: : ;Build-immediate
2686: postpone create-resolve-immediate
2687: postpone ; built >exec ! ; immediate
2688:
2689: : gdoes> ( ghost -- addr flag )
2690: executed-ghost @ g>body ;
2691:
2692: \ DO: ;DO 11may93jaw
2693:
2694: : do:ghost! ( ghost -- ) built >do:ghost ! ;
2695: : doexec! ( xt -- ) built >do:ghost @ >exec ! ;
2696:
2697: : DO: ( -- [xt] [colon-sys] )
2698: here ghostheader do:ghost!
2699: :noname postpone gdoes> ;
2700:
2701: : by: ( -- [xt] [colon-sys] ) \ name
2702: Ghost do:ghost!
2703: :noname postpone gdoes> ;
2704:
2705: : ;DO ( [xt] [colon-sys] -- )
2706: postpone ; doexec! ; immediate
2707:
2708: : by ( -- ) \ Name
2709: Ghost >do:ghost @ do:ghost! ;
2710:
2711: : compile: ( --[xt] [colon-sys] )
2712: \G defines a compile time action for created words
2713: \G by this builder
2714: :noname ;
2715:
2716: : ;compile ( [xt] [colon-sys] -- )
2717: postpone ; built >do:ghost @ >comp ! ; immediate
2718:
2719: \ Variables and Constants 05dec92py
2720:
2721: Builder (Constant)
2722: Build: ( n -- ) ;Build
2723: by: :docon ( target-body-addr -- n ) T @ H ;DO
2724:
2725: Builder Constant
2726: Build: ( n -- ) T , H ;Build
2727: by (Constant)
2728:
2729: Builder AConstant
2730: Build: ( n -- ) T A, H ;Build
2731: by (Constant)
2732:
2733: Builder 2Constant
2734: Build: ( d -- ) T , , H ;Build
2735: DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO
2736:
2737: Builder Create
2738: BuildSmart: ;Build
2739: by: :dovar ( target-body-addr -- addr ) ;DO
2740:
2741: Builder Variable
2742: T has? rom H [IF]
2743: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 , H ( switchrom ) ;Build
2744: by (Constant)
2745: [ELSE]
2746: Build: T 0 , H ;Build
2747: by Create
2748: [THEN]
2749:
2750: Builder 2Variable
2751: T has? rom H [IF]
2752: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 , 0 , H ( switchrom ) ;Build
2753: by (Constant)
2754: [ELSE]
2755: Build: T 0 , 0 , H ;Build
2756: by Create
2757: [THEN]
2758:
2759: Builder AVariable
2760: T has? rom H [IF]
2761: Build: ( -- ) T here 0 A, H switchram T align here swap ! 0 A, H ( switchrom ) ;Build
2762: by (Constant)
2763: [ELSE]
2764: Build: T 0 A, H ;Build
2765: by Create
2766: [THEN]
2767:
2768: \ User variables 04may94py
2769:
2770: Variable tup 0 tup !
2771: Variable tudp 0 tudp !
2772:
2773: : u, ( n -- udp )
2774: tup @ tudp @ + T ! H
2775: tudp @ dup T cell+ H tudp ! ;
2776:
2777: : au, ( n -- udp )
2778: tup @ tudp @ + T A! H
2779: tudp @ dup T cell+ H tudp ! ;
2780:
2781: Builder User
2782: Build: 0 u, X , ;Build
2783: by: :douser ( ghost -- up-addr ) X @ tup @ + ;DO
2784:
2785: Builder 2User
2786: Build: 0 u, X , 0 u, drop ;Build
2787: by User
2788:
2789: Builder AUser
2790: Build: 0 au, X , ;Build
2791: by User
2792:
2793: Builder (Value)
2794: Build: ( n -- ) ;Build
2795: by: :docon ( target-body-addr -- n ) T @ H ;DO
2796:
2797: Builder Value
2798: BuildSmart: T , H ;Build
2799: by (Value)
2800:
2801: Builder AValue
2802: BuildSmart: T A, H ;Build
2803: by (Value)
2804:
2805: Defer texecute
2806:
2807: Builder Defer
2808: BuildSmart: ( -- ) [T'] noop T A, H ;Build
2809: by: :dodefer ( ghost -- ) X @ texecute ;DO
2810:
2811: Builder interpret/compile:
2812: Build: ( inter comp -- ) swap T A, A, H ;Build-immediate
2813: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
2814:
2815: \ Sturctures 23feb95py
2816:
2817: : nalign ( addr1 n -- addr2 )
2818: \ addr2 is the aligned version of addr1 wrt the alignment size n
2819: 1- tuck + swap invert and ;
2820:
2821:
2822: Builder (Field)
2823: Build: ;Build
2824: by: :dofield T @ H + ;DO
2825:
2826: Builder Field
2827: Build: ( align1 offset1 align size "name" -- align2 offset2 )
2828: rot dup T , H ( align1 align size offset1 )
2829: + >r nalign r> ;Build
2830: by (Field)
2831:
2832: >TARGET
2833: : struct T 1 chars 0 H ;
2834: : end-struct T 2Constant H ;
2835:
2836: : cell% ( n -- size align )
2837: T 1 cells H dup ;
2838: >CROSS
2839:
2840: \ Input-Methods 01py
2841:
2842: Builder input-method
2843: Build: ( m v -- m' v ) dup T , cell+ H ;Build
2844: DO: abort" Not in cross mode" ;DO
2845:
2846: Builder input-var
2847: Build: ( m v size -- m v' ) over T , H + ;Build
2848: DO: abort" Not in cross mode" ;DO
2849:
2850: \ Peephole optimization 05sep01jaw
2851:
2852: \ this section defines different compilation
2853: \ actions for created words
2854: \ this will help the peephole optimizer
2855: \ I (jaw) took this from bernds latest cross-compiler
2856: \ changes but seperated it from the original
2857: \ Builder words. The final plan is to put this
2858: \ into a seperate file, together with the peephole
2859: \ optimizer for cross
2860:
2861:
2862: T has? peephole H [IF]
2863:
2864: >CROSS
2865:
2866: : (callc) compile call T >body a, H ; ' (callc) plugin-of colon,
2867: : (callcm) T here 0 a, 0 a, H ; ' (callcm) plugin-of colonmark,
2868: : (call-res) >tempdp resolved gexecute tempdp> drop ;
2869: ' (call-res) plugin-of colon-resolve
2870: : (pprim) dup 0< IF $4000 - ELSE
2871: cr ." wrong usage of (prim) "
2872: dup gdiscover IF .ghost ELSE . THEN cr -1 throw THEN
2873: T a, H ; ' (pprim) plugin-of prim,
2874:
2875: \ if we want this, we have to spilt aconstant
2876: \ and constant!!
2877: \ Builder (Constant)
2878: \ compile: g>body X @ lit, ;compile
2879:
2880: Builder (Constant)
2881: compile: g>body compile lit@ T a, H ;compile
2882:
2883: Builder (Value)
2884: compile: g>body compile lit@ T a, H ;compile
2885:
2886: \ this changes also Variable, AVariable and 2Variable
2887: Builder Create
2888: compile: g>body alit, ;compile
2889:
2890: Builder User
2891: compile: g>body compile useraddr T @ , H ;compile
2892:
2893: Builder Defer
2894: compile: g>body compile lit-perform T A, H ;compile
2895:
2896: Builder (Field)
2897: compile: g>body T @ H compile lit+ T , H ;compile
2898:
2899: Builder interpret/compile:
2900: compile: does-resolved ;compile
2901:
2902: Builder input-method
2903: compile: does-resolved ;compile
2904:
2905: Builder input-var
2906: compile: does-resolved ;compile
2907:
2908: [THEN]
2909:
2910: \ structural conditionals 17dec92py
2911:
2912: >CROSS
2913: : (ncontrols?) ( n -- )
2914: \g We expect n open control structures
2915: depth over u<=
2916: ABORT" CROSS: unstructured, stack underflow"
2917: 0 ?DO I pick 0=
2918: ABORT" CROSS: unstructured"
2919: LOOP ; ' (ncontrols?) plugin-of ncontrols?
2920:
2921: \ : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
2922: \ : sys? ( sys -- sys ) dup 0= ?struc ;
2923:
2924: : >mark ( -- sys ) T here ( dup ." M" hex. ) 0 , H ;
2925:
2926: : branchoffset ( src dest -- ) - tchar / ; \ ?? jaw
2927:
2928: : >resolve ( sys -- )
2929: X here ( dup ." >" hex. ) over branchoffset swap X ! ;
2930:
2931: : <resolve ( sys -- )
2932: X here ( dup ." <" hex. ) branchoffset X , ;
2933:
2934: :noname compile branch X here branchoffset X , ;
2935: IS branch, ( target-addr -- )
2936: :noname compile ?branch X here branchoffset X , ;
2937: IS ?branch, ( target-addr -- )
2938: :noname compile branch T here 0 , H ;
2939: IS branchmark, ( -- branchtoken )
2940: :noname compile ?branch T here 0 , H ;
2941: IS ?branchmark, ( -- branchtoken )
2942: :noname T here 0 , H ;
2943: IS ?domark, ( -- branchtoken )
2944: :noname dup X @ ?struc X here over branchoffset swap X ! ;
2945: IS branchtoresolve, ( branchtoken -- )
2946: :noname branchto, X here ;
2947: IS branchtomark, ( -- target-addr )
2948:
2949: >TARGET
2950:
2951: \ Structural Conditionals 12dec92py
2952:
2953: \ CLEANUP Cond: BUT sys? swap ;Cond
2954: \ CLEANUP Cond: YET sys? dup ;Cond
2955:
2956: >CROSS
2957:
2958: Variable tleavings 0 tleavings !
2959:
2960: : (done) ( addr -- )
2961: tleavings @
2962: BEGIN dup
2963: WHILE
2964: >r dup r@ cell+ @ \ address of branch
2965: u> 0= \ lower than DO?
2966: WHILE
2967: r@ 2 cells + @ \ branch token
2968: branchtoresolve,
2969: r@ @ r> free throw
2970: REPEAT r> THEN
2971: tleavings ! drop ;
2972:
2973: >TARGET
2974:
2975: \ What for? ANS? JAW Cond: DONE ( addr -- ) (done) ;Cond
2976:
2977: >CROSS
2978: : (leave) ( branchtoken -- )
2979: 3 cells allocate throw >r
2980: T here H r@ cell+ !
2981: r@ 2 cells + !
2982: tleavings @ r@ !
2983: r> tleavings ! ;
2984: >TARGET
2985:
2986: : (leave,) ( -- )
2987: branchmark, (leave) ; ' (leave,) plugin-of leave,
2988:
2989: : (?leave,) ( -- )
2990: compile 0= ?branchmark, (leave) ; ' (?leave,) plugin-of ?leave,
2991:
2992: Cond: LEAVE leave, ;Cond
2993: Cond: ?LEAVE ?leave, ;Cond
2994:
2995: >CROSS
2996: \ !!JW ToDo : Move to general tools section
2997:
2998: : to1 ( x1 x2 xn n -- addr )
2999: \G packs n stack elements in am allocated memory region
3000: dup dup 1+ cells allocate throw dup >r swap 1+
3001: 0 DO tuck ! cell+ LOOP
3002: drop r> ;
3003:
3004: : 1to ( addr -- x1 x2 xn )
3005: \G unpacks the elements saved by to1
3006: dup @ swap over cells + swap
3007: 0 DO dup @ swap 1 cells - LOOP
3008: free throw ;
3009:
3010: : loop] branchto, dup <resolve tcell - (done) ;
3011:
3012: : skiploop] ?dup IF branchto, branchtoresolve, THEN ;
3013:
3014: >TARGET
3015:
3016: \ Structural Conditionals 12dec92py
3017:
3018: : (cs-swap) ( x1 x2 -- x2 x1 )
3019: swap ; ' (cs-swap) plugin-of cs-swap
3020:
3021: : (ahead,) branchmark, ; ' (ahead,) plugin-of ahead,
3022:
3023: : (if,) ?branchmark, ; ' (if,) plugin-of if,
3024:
3025: : (then,) branchto, branchtoresolve, ; ' (then,) plugin-of then,
3026:
3027: : (else,) ( ahead ) branchmark,
3028: swap
3029: ( then ) branchto, branchtoresolve, ; ' (else,) plugin-of else,
3030:
3031: : (begin,) branchtomark, ; ' (begin,) plugin-of begin,
3032:
3033: : (while,) ( if ) ?branchmark,
3034: swap ; ' (while,) plugin-of while,
3035:
3036: : (again,) branch, ; ' (again,) plugin-of again,
3037:
3038: : (until,) ?branch, ; ' (until,) plugin-of until,
3039:
3040: : (repeat,) ( again ) branch,
3041: ( then ) branchto, branchtoresolve, ; ' (repeat,) plugin-of repeat,
3042:
3043: : (case,) ( -- n )
3044: 0 ; ' (case,) plugin-of case,
3045:
3046: : (of,) ( n -- x1 n )
3047: 1+ >r
3048: compile over compile =
3049: if, compile drop r> ; ' (of,) plugin-of of,
3050:
3051: : (endof,) ( x1 n -- x2 n )
3052: >r 1 ncontrols? else, r> ; ' (endof,) plugin-of endof,
3053:
3054: : (endcase,) ( x1 .. xn n -- )
3055: compile drop 0 ?DO 1 ncontrols? then, LOOP ; ' (endcase,) plugin-of endcase,
3056:
3057: >TARGET
3058: Cond: AHEAD ahead, ;Cond
3059: Cond: IF if, ;Cond
3060: Cond: THEN 1 ncontrols? then, ;Cond
3061: Cond: ENDIF 1 ncontrols? then, ;Cond
3062: Cond: ELSE 1 ncontrols? else, ;Cond
3063:
3064: Cond: BEGIN begin, ;Cond
3065: Cond: WHILE 1 ncontrols? while, ;Cond
3066: Cond: AGAIN 1 ncontrols? again, ;Cond
3067: Cond: UNTIL 1 ncontrols? until, ;Cond
3068: Cond: REPEAT 2 ncontrols? repeat, ;Cond
3069:
3070: Cond: CASE case, ;Cond
3071: Cond: OF of, ;Cond
3072: Cond: ENDOF endof, ;Cond
3073: Cond: ENDCASE endcase, ;Cond
3074:
3075: \ Structural Conditionals 12dec92py
3076:
3077: : (do,) ( -- target-addr )
3078: \ ?? i think 0 is too much! jaw
3079: 0 compile (do)
3080: branchtomark, 2 to1 ; ' (do,) plugin-of do,
3081:
3082: \ alternative for if no ?do
3083: \ : (do,)
3084: \ compile 2dup compile = compile IF
3085: \ compile 2drop compile ELSE
3086: \ compile (do) branchtomark, 2 to1 ;
3087:
3088: : (?do,) ( -- target-addr )
3089: 0 compile (?do) ?domark, (leave)
3090: branchtomark, 2 to1 ; ' (?do,) plugin-of ?do,
3091:
3092: : (for,) ( -- target-addr )
3093: compile (for) branchtomark, ; ' (for,) plugin-of for,
3094:
3095: : (loop,) ( target-addr -- )
3096: 1to compile (loop) loop]
3097: compile unloop skiploop] ; ' (loop,) plugin-of loop,
3098:
3099: : (+loop,) ( target-addr -- )
3100: 1to compile (+loop) loop]
3101: compile unloop skiploop] ; ' (+loop,) plugin-of +loop,
3102:
3103: : (next,)
3104: compile (next) loop] compile unloop ; ' (next,) plugin-of next,
3105:
3106: Cond: DO do, ;Cond
3107: Cond: ?DO ?do, ;Cond
3108: Cond: FOR for, ;Cond
3109:
3110: Cond: LOOP 1 ncontrols? loop, ;Cond
3111: Cond: +LOOP 1 ncontrols? +loop, ;Cond
3112: Cond: NEXT 1 ncontrols? next, ;Cond
3113:
3114: \ String words 23feb93py
3115:
3116: : ," [char] " parse ht-string, X align ;
3117:
3118: Cond: ." compile (.") T ," H ;Cond
3119: Cond: S" compile (S") T ," H ;Cond
3120: Cond: C" compile (C") T ," H ;Cond
3121: Cond: ABORT" compile (ABORT") T ," H ;Cond
3122:
3123: Cond: IS T ' >body H compile ALiteral compile ! ;Cond
3124: : IS T >address ' >body ! H ;
3125: Cond: TO T ' >body H compile ALiteral compile ! ;Cond
3126: : TO T ' >body ! H ;
3127:
3128: Cond: defers T ' >body @ compile, H ;Cond
3129:
3130: \ LINKED ERR" ENV" 2ENV" 18may93jaw
3131:
3132: \ linked list primitive
3133: : linked X here over X @ X A, swap X ! ;
3134: : chained T linked A, H ;
3135:
3136: : err" s" ErrLink linked" evaluate T , H
3137: [char] " parse ht-string, X align ;
3138:
3139: : env" [char] " parse s" EnvLink linked" evaluate
3140: ht-string, X align X , ;
3141:
3142: : 2env" [char] " parse s" EnvLink linked" evaluate
3143: here >r ht-string, X align X , X ,
3144: r> dup T c@ H 80 and swap T c! H ;
3145:
3146: \ compile must be last 22feb93py
3147:
3148: Cond: [compile] ( -- ) \ name
3149: \g For immediate words, works even if forward reference
3150: bl word gfind 0= ABORT" CROSS: Can't compile"
3151: (gexecute) ;Cond
3152:
3153: Cond: postpone ( -- ) \ name
3154: bl word gfind 0= ABORT" CROSS: Can't compile"
3155: dup >magic @ <fwd> =
3156: ABORT" CROSS: Can't postpone on forward declaration"
3157: dup >magic @ <imm> =
3158: IF (gexecute)
3159: ELSE compile (compile) addr, THEN ;Cond
3160:
3161: \ save-cross 17mar93py
3162:
3163: hex
3164:
3165: >CROSS
3166: Create magic s" Gforth2x" here over allot swap move
3167:
3168: bigendian 1+ \ strangely, in magic big=0, little=1
3169: tcell 1 = 0 and or
3170: tcell 2 = 2 and or
3171: tcell 4 = 4 and or
3172: tcell 8 = 6 and or
3173: tchar 1 = 00 and or
3174: tchar 2 = 28 and or
3175: tchar 4 = 50 and or
3176: tchar 8 = 78 and or
3177: magic 7 + c!
3178:
3179: : save-cross ( "image-name" "binary-name" -- )
3180: bl parse ." Saving to " 2dup type cr
3181: w/o bin create-file throw >r
3182: s" header" X $has? IF
3183: s" #! " r@ write-file throw
3184: bl parse r@ write-file throw
3185: s" --image-file" r@ write-file throw
3186: #lf r@ emit-file throw
3187: r@ dup file-position throw drop 8 mod 8 swap ( file-id limit index )
3188: ?do
3189: bl over emit-file throw
3190: loop
3191: drop
3192: magic 8 r@ write-file throw \ write magic
3193: ELSE
3194: bl parse 2drop
3195: THEN
3196: image @ there
3197: r@ write-file throw \ write image
3198: s" relocate" X $has? IF
3199: bit$ @ there 1- tcell>bit rshift 1+
3200: r@ write-file throw \ write tags
3201: THEN
3202: r> close-file throw ;
3203:
3204: : save-region ( addr len -- )
3205: bl parse w/o bin create-file throw >r
3206: swap >image swap r@ write-file throw
3207: r> close-file throw ;
3208:
3209: \ save-asm-region 29aug01jaw
3210:
3211: Variable name-ptr
3212: Create name-buf 200 chars allot
3213: : init-name-buf name-buf name-ptr ! ;
3214: : nb, name-ptr @ c! 1 chars name-ptr +! ;
3215: : $nb, ( adr len -- ) bounds ?DO I c@ nb, LOOP ;
3216: : @nb name-ptr @ name-buf tuck - ;
3217:
3218: \ stores a usefull string representation of the character
3219: \ in the name buffer
3220: : name-char, ( c -- )
3221: dup 'a 'z 1+ within IF nb, EXIT THEN
3222: dup 'A 'Z 1+ within IF $20 + nb, EXIT THEN
3223: dup '0 '9 1+ within IF nb, EXIT THEN
3224: CASE '+ OF s" _PLUS" $nb, ENDOF
3225: '- OF s" _MINUS" $nb, ENDOF
3226: '* OF s" _STAR" $nb, ENDOF
3227: '/ OF s" _SLASH" $nb, ENDOF
3228: '' OF s" _TICK" $nb, ENDOF
3229: '( OF s" _OPAREN" $nb, ENDOF
3230: ') OF s" _CPAREN" $nb, ENDOF
3231: '[ OF s" _OBRACKET" $nb, ENDOF
3232: '] OF s" _CBRACKET" $nb, ENDOF
3233: '! OF s" _STORE" $nb, ENDOF
3234: '@ OF s" _FETCH" $nb, ENDOF
3235: '> OF s" _GREATER" $nb, ENDOF
3236: '< OF s" _LESS" $nb, ENDOF
3237: '= OF s" _EQUAL" $nb, ENDOF
3238: '# OF s" _HASH" $nb, ENDOF
3239: '? OF s" _QUEST" $nb, ENDOF
3240: ': OF s" _COL" $nb, ENDOF
3241: '; OF s" _SEMICOL" $nb, ENDOF
3242: ', OF s" _COMMA" $nb, ENDOF
3243: '. OF s" _DOT" $nb, ENDOF
3244: '" OF s" _DQUOT" $nb, ENDOF
3245: dup
3246: base @ >r hex s>d <# #s 'X hold '_ hold #> $nb, r> base !
3247: ENDCASE ;
3248:
3249: : label-from-ghostname ( ghost -- addr len )
3250: dup >ghostname init-name-buf 'L nb, bounds
3251: ?DO I c@ name-char, LOOP
3252: \ we add the address to a name to make in unique
3253: \ because one name may appear more then once
3254: \ there are names (e.g. boot) that may be reference from other
3255: \ assembler source files, so we declare them as unique
3256: \ and don't add the address suffix
3257: dup >ghost-flags @ <unique> and 0=
3258: IF s" __" $nb, >link @ base @ >r hex 0 <# #s 'L hold #> r> base ! $nb,
3259: ELSE drop
3260: THEN
3261: @nb ;
3262:
3263: \ FIXME why disabled?!
3264: : label-from-ghostnameXX ( ghost -- addr len )
3265: \ same as (label-from-ghostname) but caches generated names
3266: dup >asm-name @ ?dup IF nip count EXIT THEN
3267: \ dup >r (label-from-ghostname) 2dup
3268: align here >r string, align
3269: r> r> >asm-name ! ;
3270:
3271: : primghostdiscover ( xt -- ghost true | xt false )
3272: dup 0= IF false EXIT THEN
3273: >r last-prim-ghost
3274: BEGIN @ dup
3275: WHILE dup >asm-dummyaddr @ r@ =
3276: IF rdrop true EXIT THEN
3277: REPEAT
3278: drop r> false ;
3279:
3280: : gdiscover2 ( xt -- ghost true | xt false )
3281: dup taddr>region 0= IF false EXIT THEN
3282: dup (>regiontype) @ dup 0= IF drop false EXIT THEN
3283: addr-xt-ghost @ dup 0= IF drop false EXIT THEN
3284: nip true ;
3285: \ dup >ghost-name @ IF nip true ELSE drop false THEN ;
3286:
3287: \ generates a label name for the target address
3288: : generate-label-name ( taddr -- addr len )
3289: gdiscover2
3290: IF dup >magic @ <do:> =
3291: IF >asm-name @ count EXIT THEN
3292: label-from-ghostname
3293: ELSE
3294: primghostdiscover
3295: IF >asm-name @ count
3296: ELSE base @ >r hex 0 <# #s 'L hold #> r> base !
3297: THEN
3298: THEN ;
3299:
3300: Variable outfile-fd
3301:
3302: : $out ( adr len -- ) outfile-fd @ write-file throw ;
3303: : nlout newline $out ;
3304: : .ux ( n -- )
3305: base @ hex swap 0 <# #S #> $out base ! ;
3306:
3307: : save-asm-region-part-aligned ( taddr len -- 'taddr 'len )
3308: dup cell/ 0
3309: ?DO nlout s" .word " $out over @relbit
3310: IF over X @ generate-label-name $out
3311: ELSE over X @ s" 0x0" $out .ux
3312: THEN
3313: tcell /string
3314: LOOP ;
3315:
3316: : print-bytes ( taddr len n -- taddr' len' )
3317: over min dup 0>
3318: IF nlout s" .byte " $out 0
3319: ?DO I 0> IF s" , " $out THEN
3320: over X c@ s" 0x0" $out .ux 1 /string
3321: LOOP
3322: THEN ;
3323:
3324: : save-asm-region-part ( addr len -- )
3325: over dup X aligned swap - ?dup
3326: IF print-bytes THEN
3327: save-asm-region-part-aligned
3328: dup dup X aligned swap - ?dup
3329: IF 2 pick @relbit ABORT" relocated field splitted"
3330: print-bytes
3331: THEN
3332: 2drop ;
3333:
3334: : print-label ( taddr -- )
3335: nlout generate-label-name $out s" :" $out ;
3336:
3337: : snl-calc ( taddr taddr2 -- )
3338: tuck over - ;
3339:
3340: : skip-nolables ( taddr -- taddr2 taddr len )
3341: \G skips memory region where no lables are defined
3342: \G starting from taddr+1
3343: \G Labels will be introduced for each reference mark
3344: \G in addr-refs.
3345: \G This word deals with lables at byte addresses as well.
3346: \G The main idea is to have an intro part which
3347: \G skips until the next cell boundary, the middle part
3348: \G which skips whole cells very efficiently and the third
3349: \G part which skips the bytes to the label in a cell
3350: dup 1+ dup (>regiontype)
3351: ( S taddr taddr-realstart type-addr )
3352: dup @ dup IF addr-refs @ THEN
3353: swap >r
3354: over align+ tuck tcell swap - rshift swap 0
3355: ?DO dup 1 and
3356: IF drop rdrop snl-calc UNLOOP EXIT THEN
3357: 2/ swap 1+ swap
3358: LOOP
3359: drop r> cell+
3360: ( S .. taddr2 type-addr ) dup
3361: BEGIN dup @ dup IF addr-refs @ THEN 0= WHILE cell+ REPEAT
3362: dup >r swap - 1 cells / tcell * + r>
3363: ( S .. taddr2+skiplencells type-addr )
3364: @ addr-refs @ 1 tcell lshift or
3365: BEGIN dup 1 and 0= WHILE swap 1+ swap 2/ REPEAT drop
3366: ( S .. taddr2+skiplencells+skiplenbytes )
3367: snl-calc ;
3368:
3369: : insert-label ( taddr -- )
3370: dup 0= IF drop EXIT THEN
3371: \ ignore everything which points outside our memory regions
3372: \ maybe a primitive pointer or whatever
3373: dup taddr>region 0= IF drop EXIT THEN
3374: dup >r (>regiontype) define-addr-struct addr-refs dup @
3375: r> tcell 1- and 1 swap lshift or swap ! ;
3376:
3377: \ this generates a sorted list of addresses which must be labels
3378: \ it scans therefore a whole region
3379: : generate-label-list-region ( taddr len -- )
3380: BEGIN over @relbit IF over X @ insert-label THEN
3381: tcell /string dup 0<
3382: UNTIL 2drop ;
3383:
3384: : generate-label-list ( -- )
3385: region-link
3386: BEGIN @ dup WHILE
3387: dup 0 >rlink - extent
3388: ?dup IF generate-label-list-region ELSE drop THEN
3389: REPEAT drop ;
3390:
3391: : create-outfile ( addr len -- )
3392: w/o bin create-file throw outfile-fd ! ;
3393:
3394: : close-outfile ( -- )
3395: outfile-fd @ close-file throw ;
3396:
3397: : (save-asm-region) ( region -- )
3398: \ ." label list..."
3399: generate-label-list
3400: \ ." ok!" cr
3401: extent ( S taddr len )
3402: over insert-label
3403: 2dup + dup insert-label >r ( R end-label )
3404: ( S taddr len ) drop
3405: BEGIN
3406: dup print-label
3407: dup r@ <> WHILE
3408: skip-nolables save-asm-region-part
3409: REPEAT drop rdrop ;
3410:
3411: : lineout ( addr len -- )
3412: outfile-fd @ write-line throw ;
3413:
3414: : save-asm-region ( region adr len -- )
3415: create-outfile (save-asm-region) close-outfile ;
3416:
3417: \ \ minimal definitions
3418:
3419: >MINIMAL also minimal
3420:
3421: \ Usefull words 13feb93py
3422:
3423: : KB 400 * ;
3424:
3425: \ \ [IF] [ELSE] [THEN] ... 14sep97jaw
3426:
3427: \ it is useful to define our own structures and not to rely
3428: \ on the words in the host system
3429: \ The words in the host system might be defined with vocabularies
3430: \ this doesn't work with our self-made compile-loop
3431:
3432: Create parsed 20 chars allot \ store word we parsed
3433:
3434: : upcase
3435: parsed count bounds
3436: ?DO I c@ toupper I c! LOOP ;
3437:
3438: : [ELSE]
3439: 1 BEGIN
3440: BEGIN bl word count dup WHILE
3441: comment? 20 umin parsed place upcase parsed count
3442: 2dup s" [IF]" compare 0= >r
3443: 2dup s" [IFUNDEF]" compare 0= >r
3444: 2dup s" [IFDEF]" compare 0= r> or r> or
3445: IF 2drop 1+
3446: ELSE 2dup s" [ELSE]" compare 0=
3447: IF 2drop 1- dup
3448: IF 1+
3449: THEN
3450: ELSE
3451: 2dup s" [ENDIF]" compare 0= >r
3452: s" [THEN]" compare 0= r> or
3453: IF 1- THEN
3454: THEN
3455: THEN
3456: ?dup 0= ?EXIT
3457: REPEAT
3458: 2drop refill 0=
3459: UNTIL drop ; immediate
3460:
3461: : [THEN] ( -- ) ; immediate
3462:
3463: : [ENDIF] ( -- ) ; immediate
3464:
3465: : [IF] ( flag -- )
3466: 0= IF postpone [ELSE] THEN ; immediate
3467:
3468: Cond: [IF] postpone [IF] ;Cond
3469: Cond: [THEN] postpone [THEN] ;Cond
3470: Cond: [ELSE] postpone [ELSE] ;Cond
3471:
3472: \ define new [IFDEF] and [IFUNDEF] 20may93jaw
3473:
3474: : defined? tdefined? ;
3475: : needed? needed? ;
3476: : doer? doer? ;
3477:
3478: \ we want to use IFDEF on compiler directives (e.g. E?) in the source, too
3479:
3480: : directive?
3481: bl word count [ ' target >wordlist ] literal search-wordlist
3482: dup IF nip THEN ;
3483:
3484: : [IFDEF] >in @ directive? swap >in !
3485: 0= IF tdefined? ELSE name 2drop true THEN
3486: postpone [IF] ;
3487:
3488: : [IFUNDEF] tdefined? 0= postpone [IF] ;
3489:
3490: Cond: [IFDEF] postpone [IFDEF] ;Cond
3491:
3492: Cond: [IFUNDEF] postpone [IFUNDEF] ;Cond
3493:
3494: \ C: \- \+ Conditional Compiling 09jun93jaw
3495:
3496: : C: >in @ tdefined? 0=
3497: IF >in ! X :
3498: ELSE drop
3499: BEGIN bl word dup c@
3500: IF count comment? s" ;" compare 0= ?EXIT
3501: ELSE refill 0= ABORT" CROSS: Out of Input while C:"
3502: THEN
3503: AGAIN
3504: THEN ;
3505:
3506: : d? d? ;
3507:
3508: : \D ( -- "debugswitch" )
3509: \G doesn't skip line when debug switch is on
3510: D? 0= IF postpone \ THEN ;
3511:
3512: : \- ( -- "wordname" )
3513: \G interprets the line if word is not defined
3514: tdefined? IF postpone \ THEN ;
3515:
3516: : \+ ( -- "wordname" )
3517: \G interprets the line if word is defined
3518: tdefined? 0= IF postpone \ THEN ;
3519:
3520: : \? ( -- "envorinstring" )
3521: \G Skip line if environmental variable evaluates to false
3522: X has? 0= IF postpone \ THEN ;
3523:
3524: Cond: \- \- ;Cond
3525: Cond: \+ \+ ;Cond
3526: Cond: \D \D ;Cond
3527: Cond: \? \? ;Cond
3528:
3529: : ?? bl word find IF execute ELSE drop 0 THEN ;
3530:
3531: : needed:
3532: \G defines ghost for words that we want to be compiled
3533: BEGIN >in @ bl word c@ WHILE >in ! Ghost drop REPEAT drop ;
3534:
3535: \ words that should be in minimal
3536:
3537: create s-buffer 50 chars allot
3538:
3539: bigendian Constant bigendian
3540:
3541: : here there ;
3542: : equ constant ;
3543: : mark there constant ;
3544:
3545: \ compiler directives
3546: : >ram >ram ;
3547: : >rom >rom ;
3548: : >auto >auto ;
3549: : >tempdp >tempdp ;
3550: : tempdp> tempdp> ;
3551: : const constflag on ;
3552:
3553: : Redefinitions-start
3554: \G Starts a redefinition section. Warnings are disabled and
3555: \G existing ghosts are reused. This is used in the kernel
3556: \G where ( and \ and the like are redefined
3557: twarnings off warnings off reuse-ghosts on ;
3558:
3559: : Redefinitions-end
3560: \G Ends a redefinition section. Warnings are enabled again.
3561: twarnings on warnings on reuse-ghosts off ;
3562:
3563: : warnings name 3 =
3564: IF twarnings off warnings off ELSE twarnings on warnings on THEN drop ;
3565:
3566: : | ;
3567: \ : | NoHeaderFlag on ; \ This is broken (damages the last word)
3568:
3569: : save-cross save-cross ;
3570: : save-region save-region ;
3571: : tdump swap >image swap dump ;
3572:
3573: also forth
3574: [IFDEF] Label : Label defempty? Label ; [THEN]
3575: [IFDEF] start-macros : start-macros defempty? start-macros ; [THEN]
3576: \ [IFDEF] builttag : builttag builttag ; [THEN]
3577: previous
3578:
3579: : s" [char] " parse s-buffer place s-buffer count ; \ for environment?
3580: : + + ;
3581: : 1+ 1 + ;
3582: : 2+ 2 + ;
3583: : 1- 1- ;
3584: : - - ;
3585: : and and ;
3586: : or or ;
3587: : 2* 2* ;
3588: : * * ;
3589: : / / ;
3590: : dup dup ;
3591: : over over ;
3592: : swap swap ;
3593: : rot rot ;
3594: : drop drop ;
3595: : = = ;
3596: : <> <> ;
3597: : 0= 0= ;
3598: : lshift lshift ;
3599: : 2/ 2/ ;
3600: \ : . . ;
3601:
3602: : all-words ['] forced? IS skip? ;
3603: : needed-words ['] needed? IS skip? ;
3604: : undef-words ['] defined2? IS skip? ;
3605: : skipdef skipdef ;
3606:
3607: : \ postpone \ ; immediate
3608: : \G T-\G ; immediate
3609: : ( postpone ( ; immediate
3610: : include bl word count included ;
3611: : included swap >image swap included ;
3612: : require require ;
3613: : needs require ;
3614: : .( [char] ) parse type ;
3615: : ." [char] " parse type ;
3616: : cr cr ;
3617:
3618: : times 0 ?DO dup X c, LOOP drop ; \ used for space table creation
3619:
3620: \ only forth also cross also minimal definitions order
3621:
3622: \ cross-compiler words
3623:
3624: : decimal decimal [g'] decimal >exec2 @ ?dup IF EXECUTE THEN ;
3625: : hex hex [g'] hex >exec2 @ ?dup IF EXECUTE THEN ;
3626:
3627: \ : tudp X tudp ;
3628: \ : tup X tup ;
3629:
3630: : doc-off false to-doc ! ;
3631: : doc-on true to-doc ! ;
3632:
3633: : declareunique ( "name" -- )
3634: \G Sets the unique flag for a ghost. The assembler output
3635: \G generates labels with the ghostname concatenated with the address
3636: \G while cross-compiling. The address is concatenated
3637: \G because we have double occurences of the same name.
3638: \G If we want to reference the labels from the assembler or C
3639: \G code we declare them unique, so the address is skipped.
3640: Ghost >ghost-flags dup @ <unique> or swap ! ;
3641:
3642: \ [IFDEF] dbg : dbg dbg ; [THEN]
3643:
3644: \ for debugging...
3645: \ : dbg dbg ;
3646: : horder order ;
3647: : hwords words ;
3648: \ : words also ghosts
3649: \ words previous ;
3650: : .s .s ;
3651: : depth depth ;
3652: : bye bye ;
3653:
3654: \ dummy
3655: : group 0 word drop ;
3656:
3657: \ turnkey direction
3658: : H forth ; immediate
3659: : T minimal ; immediate
3660: : G ghosts ; immediate
3661:
3662:
3663: \ these ones are pefered:
3664:
3665: : unlock previous forth also cross ;
3666:
3667: \ also minimal
3668: >cross
3669:
3670: : turnkey
3671: ghosts-wordlist 1 set-order
3672: also target definitions
3673: also Minimal also ;
3674:
3675: >minimal
3676:
3677: : [[+++
3678: turnkey unlock ;
3679:
3680: unlock definitions also minimal
3681:
3682: : lock turnkey ;
3683:
3684: Defer +++]]-hook
3685: : +++]] +++]]-hook lock ;
3686:
3687: LOCK
3688: \ load cross compiler extension defined in mach file
3689:
3690: UNLOCK >CROSS
3691:
3692: [IFDEF] extend-cross extend-cross [THEN]
3693:
3694: LOCK
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