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cross.fs
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Fri Feb 19 18:25:28 1999 UTC (25 years, 2 months ago) by
jwilke
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Updated cross.fs:
region interface supports now diffrent memory regions in a greater address-space
than we have memory.
image, bit$ and makekernel will get obsolete, use region interface instead.
1: \ CROSS.FS The Cross-Compiler 06oct92py
2: \ Idea and implementation: Bernd Paysan (py)
3:
4: \ Copyright (C) 1995,1996,1997,1998 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., 675 Mass Ave, Cambridge, MA 02139, USA.
21:
22: 0
23: [IF]
24:
25: ToDo:
26: Crossdoc destination ./doc/crossdoc.fd makes no sense when
27: cross.fs is uses seperately. jaw
28: Do we need this char translation with >address and in branchoffset?
29: (>body also affected) jaw
30: Clean up mark> and >resolve stuff jaw
31:
32: [THEN]
33:
34:
35: hex \ the defualt base for the cross-compiler is hex !!
36: Warnings off
37:
38: \ words that are generaly useful
39:
40: : KB 400 * ;
41: : >wordlist ( vocabulary-xt -- wordlist-struct )
42: also execute get-order swap >r 1- set-order r> ;
43:
44: : umax 2dup u< IF swap THEN drop ;
45: : umin 2dup u> IF swap THEN drop ;
46:
47: : string, ( c-addr u -- )
48: \ puts down string as cstring
49: dup c, here swap chars dup allot move ;
50:
51: : SetValue ( n -- <name> )
52: \G Same behaviour as "Value" if the <name> is not defined
53: \G Same behaviour as "to" if <name> is defined
54: \G SetValue searches in the current vocabulary
55: save-input bl word >r restore-input throw r> count
56: get-current search-wordlist
57: IF ['] to execute ELSE Value THEN ;
58:
59: : DefaultValue ( n -- <name> )
60: \G Same behaviour as "Value" if the <name> is not defined
61: \G DefaultValue searches in the current vocabulary
62: save-input bl word >r restore-input throw r> count
63: get-current search-wordlist
64: IF bl word drop 2drop ELSE Value THEN ;
65:
66: hex
67:
68: Vocabulary Cross
69: Vocabulary Target
70: Vocabulary Ghosts
71: VOCABULARY Minimal
72: only Forth also Target also also
73: definitions Forth
74:
75: : T previous Cross also Target ; immediate
76: : G Ghosts ; immediate
77: : H previous Forth also Cross ; immediate
78:
79: forth definitions
80:
81: : T previous Cross also Target ; immediate
82: : G Ghosts ; immediate
83:
84: : >cross also Cross definitions previous ;
85: : >target also Target definitions previous ;
86: : >minimal also Minimal definitions previous ;
87:
88: H
89:
90: >CROSS
91:
92: \ 1 Constant Cross-Flag \ to check whether assembler compiler plug-ins are
93: \ for cross-compiling
94: \ No! we use "[IFUNDEF]" there to find out whether we are target compiling!!!
95:
96: : comment? ( c-addr u -- c-addr u )
97: 2dup s" (" compare 0=
98: IF postpone (
99: ELSE 2dup s" \" compare 0= IF postpone \ THEN
100: THEN ;
101:
102: \ Begin CROSS COMPILER:
103:
104:
105:
106: \ \ -------------------- Error Handling 05aug97jaw
107:
108: \ Flags
109:
110: also forth definitions \ these values may be predefined before
111: \ the cross-compiler is loaded
112:
113: false DefaultValue stack-warn \ check on empty stack at any definition
114: false DefaultValue create-forward-warn \ warn on forward declaration of created words
115:
116: [IFUNDEF] DebugMaskSrouce Variable DebugMaskSource 0 DebugMaskSource ! [THEN]
117: [IFUNDEF] DebugMaskCross Variable DebugMaskCross 0 DebugMaskCross ! [THEN]
118:
119: previous >CROSS
120:
121: : .dec
122: base @ decimal swap . base ! ;
123:
124: : .sourcepos
125: cr sourcefilename type ." :"
126: sourceline# .dec ;
127:
128: : warnhead
129: \G display error-message head
130: \G perhaps with linenumber and filename
131: .sourcepos ." Warning: " ;
132:
133: : empty? depth IF .sourcepos ." Stack not empty!" THEN ;
134:
135: stack-warn [IF]
136: : defempty? empty? ;
137: [ELSE]
138: : defempty? ; immediate
139: [THEN]
140:
141:
142:
143: \ \ GhostNames Ghosts 9may93jaw
144:
145: \ second name source to search trough list
146:
147: VARIABLE GhostNames
148: 0 GhostNames !
149:
150: : GhostName ( -- addr )
151: here GhostNames @ , GhostNames ! here 0 ,
152: bl word count
153: \ 2dup type space
154: string, \ !! cfalign ?
155: align ;
156:
157: \ Ghost Builder 06oct92py
158:
159: \ <T T> new version with temp variable 10may93jaw
160:
161: VARIABLE VocTemp
162:
163: : <T get-current VocTemp ! also Ghosts definitions ;
164: : T> previous VocTemp @ set-current ;
165:
166: hex
167: 4711 Constant <fwd> 4712 Constant <res>
168: 4713 Constant <imm> 4714 Constant <do:>
169:
170: \ iForth makes only immediate directly after create
171: \ make atonce trick! ?
172:
173: Variable atonce atonce off
174:
175: : NoExec true ABORT" CROSS: Don't execute ghost" ;
176:
177: : GhostHeader <fwd> , 0 , ['] NoExec , ;
178:
179: : >magic ; \ type of ghost
180: : >link cell+ ; \ pointer where ghost is in target, or if unresolved
181: \ points to the where we have to resolve (linked-list)
182: : >exec cell+ cell+ ; \ execution symantics (while target compiling) of ghost
183: : >end 3 cells + ; \ room for additional tags
184: \ for builder (create, variable...) words the
185: \ execution symantics of words built are placed here
186:
187: Variable executed-ghost \ last executed ghost, needed in tcreate and gdoes>
188: Variable last-ghost \ last ghost that is created
189: Variable last-header-ghost \ last ghost definitions with header
190:
191: : Make-Ghost ( "name" -- ghost )
192: >in @ GhostName swap >in !
193: <T Create atonce @ IF immediate atonce off THEN
194: here tuck swap ! ghostheader T>
195: dup last-ghost !
196: DOES> dup executed-ghost ! >exec @ execute ;
197:
198: \ ghost words 14oct92py
199: \ changed: 10may93py/jaw
200:
201: : gfind ( string -- ghost true/1 / string false )
202: \ searches for string in word-list ghosts
203: dup count [ ' ghosts >wordlist ] ALiteral search-wordlist
204: dup IF >r >body nip r> THEN ;
205:
206: : gdiscover ( xt -- ghost true | xt false )
207: GhostNames
208: BEGIN @ dup
209: WHILE 2dup
210: cell+ @ dup >magic @ <fwd> <>
211: >r >link @ = r> and
212: IF cell+ @ nip true EXIT THEN
213: REPEAT
214: drop false ;
215:
216: VARIABLE Already
217:
218: : ghost ( "name" -- ghost )
219: Already off
220: >in @ bl word gfind IF Already on nip EXIT THEN
221: drop >in ! Make-Ghost ;
222:
223: : >ghostname ( ghost -- adr len )
224: GhostNames
225: BEGIN @ dup
226: WHILE 2dup cell+ @ =
227: UNTIL nip 2 cells + count
228: ELSE 2drop
229: \ true abort" CROSS: Ghostnames inconsistent"
230: s" ?!?!?!"
231: THEN ;
232:
233: ' >ghostname ALIAS @name
234:
235: : forward? ( ghost -- flag )
236: >magic @ <fwd> = ;
237:
238: \ Predefined ghosts 12dec92py
239:
240: ghost 0= drop
241: ghost branch ghost ?branch 2drop
242: ghost (do) ghost (?do) 2drop
243: ghost (for) drop
244: ghost (loop) ghost (+loop) 2drop
245: ghost (next) drop
246: ghost unloop ghost ;S 2drop
247: ghost lit ghost (compile) ghost ! 2drop drop
248: ghost (does>) ghost noop 2drop
249: ghost (.") ghost (S") ghost (ABORT") 2drop drop
250: ghost ' drop
251: ghost :docol ghost :doesjump ghost :dodoes 2drop drop
252: ghost :dovar drop
253: ghost over ghost = ghost drop 2drop drop
254: ghost - drop
255: ghost 2drop drop
256: ghost 2dup drop
257:
258: \ \ Parameter for target systems 06oct92py
259:
260: \ we define it ans like...
261: wordlist Constant target-environment
262:
263: VARIABLE env-current \ save information of current dictionary to restore with environ>
264:
265: : >ENVIRON get-current env-current ! target-environment set-current ;
266: : ENVIRON> env-current @ set-current ;
267:
268: >TARGET
269:
270: : environment? ( adr len -- [ x ] true | false )
271: target-environment search-wordlist
272: IF execute true ELSE false THEN ;
273:
274: : e? bl word count T environment? H 0= ABORT" environment variable not defined!" ;
275:
276: : has? bl word count T environment? H
277: IF \ environment variable is present, return its value
278: ELSE \ environment variable is not present, return false
279: \ !! JAW abort is just for testing
280: false true ABORT" arg"
281: THEN ;
282:
283: : $has? T environment? H IF ELSE false THEN ;
284:
285: >ENVIRON get-order get-current swap 1+ set-order
286: true SetValue compiler
287: true SetValue cross
288: true SetValue standard-threading
289: >TARGET previous
290:
291:
292: mach-file count included hex
293:
294: >ENVIRON
295:
296: T has? ec H
297: [IF]
298: false DefaultValue relocate
299: false DefaultValue file
300: false DefaultValue OS
301: false DefaultValue prims
302: false DefaultValue floating
303: false DefaultValue glocals
304: false DefaultValue dcomps
305: false DefaultValue hash
306: false DefaultValue xconds
307: false DefaultValue header
308: [THEN]
309:
310: true DefaultValue interpreter
311: true DefaultValue ITC
312: false DefaultValue rom
313:
314: >TARGET
315: s" relocate" T environment? H
316: [IF] SetValue NIL
317: [ELSE] >ENVIRON T NIL H SetValue relocate
318: [THEN]
319:
320: >CROSS
321:
322: \ \ Create additional parameters 19jan95py
323:
324: 1 8 lshift Constant maxbyte
325: \ this sets byte size for the target machine, an (probably right guess) jaw
326:
327: T
328: NIL Constant TNIL
329: cell Constant tcell
330: cell<< Constant tcell<<
331: cell>bit Constant tcell>bit
332: bits/byte Constant tbits/byte
333: bits/byte 8 / Constant tchar
334: float Constant tfloat
335: 1 bits/byte lshift Constant tmaxbyte
336: H
337:
338: \ Variables 06oct92py
339:
340: Variable image
341: Variable tlast TNIL tlast ! \ Last name field
342: Variable tlastcfa \ Last code field
343: Variable tdoes \ Resolve does> calls
344: Variable bit$
345:
346: \ statistics 10jun97jaw
347:
348: Variable headers-named 0 headers-named !
349: Variable user-vars 0 user-vars !
350:
351: \ Memory initialisation 05dec92py
352:
353: [IFDEF] Memory \ Memory is a bigFORTH feature
354: also Memory
355: : initmem ( var len -- )
356: 2dup swap handle! >r @ r> erase ;
357: toss
358: [ELSE]
359: : initmem ( var len -- )
360: tuck allocate abort" CROSS: No memory for target"
361: ( len var adr ) dup rot !
362: ( len adr ) swap erase ;
363: [THEN]
364:
365: \ MakeKernal 12dec92py
366:
367: : makekernel ( targetsize -- targetsize )
368: bit$ over 1- tcell>bit rshift 1+ initmem
369: image over initmem ;
370:
371: >MINIMAL
372: : makekernel makekernel ;
373: >CROSS
374:
375: : target>bitmask-size ( u1 -- u2 )
376: 1- tcell>bit rshift 1+ ;
377:
378: : allocatetarget ( size --- adr )
379: dup allocate ABORT" CROSS: No memory for target"
380: swap over swap erase ;
381:
382:
383:
384: \ \ memregion.fs
385:
386:
387: Variable last-defined-region \ pointer to last defined region
388: Variable region-link \ linked list with all regions
389: Variable mirrored-link \ linked list for mirrored regions
390: 0 dup mirrored-link ! region-link !
391:
392:
393: : >rname 6 cells + ;
394: : >rbm 5 cells + ;
395: : >rmem 4 cells + ;
396: : >rlink 3 cells + ;
397: : >rdp 2 cells + ;
398: : >rlen cell+ ;
399: : >rstart ;
400:
401:
402: : region ( addr len -- ) \G create a new region
403: \ check whether predefined region exists
404: save-input bl word find >r >r restore-input throw r> r> 0=
405: IF \ make region
406: drop
407: save-input create restore-input throw
408: here last-defined-region !
409: over ( startaddr ) , ( length ) , ( dp ) ,
410: region-link linked 0 , 0 , bl word count string,
411: ELSE \ store new parameters in region
412: bl word drop
413: >body >r r@ last-defined-region !
414: r@ >rlen ! dup r@ >rstart ! r> >rdp !
415: THEN ;
416:
417: : borders ( region -- startaddr endaddr ) \G returns lower and upper region border
418: dup >rstart @ swap >rlen @ over + ;
419:
420: : extent ( region -- startaddr len ) \G returns the really used area
421: dup >rstart @ swap >rdp @ over - ;
422:
423: : area ( region -- startaddr totallen ) \G returns the total area
424: dup >rstart swap >rlen @ ;
425:
426: : mirrored \G mark a region as mirrored
427: mirrored-link
428: linked last-defined-region @ , ;
429:
430: : .addr ( u -- )
431: \G prints a 16 or 32 Bit nice hex value
432: base @ >r hex
433: tcell 2 u>
434: IF s>d <# # # # # '. hold # # # # #> type
435: ELSE s>d <# # # # # # #> type
436: THEN r> base ! ;
437:
438: : .regions \G display region statistic
439:
440: \ we want to list the regions in the right order
441: \ so first collect all regions on stack
442: 0 region-link @
443: BEGIN dup WHILE dup @ REPEAT drop
444: BEGIN dup
445: WHILE cr
446: 0 >rlink - >r
447: r@ >rname count tuck type
448: 12 swap - 0 max spaces space
449: ." Start: " r@ >rstart @ dup .addr space
450: ." End: " r@ >rlen @ + .addr space
451: ." DP: " r> >rdp @ .addr
452: REPEAT drop
453: s" rom" T $has? H 0= ?EXIT
454: cr ." Mirrored:"
455: mirrored-link @
456: BEGIN dup
457: WHILE space dup cell+ @ >rname count type @
458: REPEAT drop cr
459: ;
460:
461: \ -------- predefined regions
462:
463: 0 0 region address-space
464: \ total memory addressed and used by the target system
465:
466: 0 0 region dictionary
467: \ rom area for the compiler
468:
469: T has? rom H
470: [IF]
471: 0 0 region ram-dictionary mirrored
472: \ ram area for the compiler
473: [ELSE]
474: ' dictionary ALIAS ram-dictionary
475: [THEN]
476:
477: 0 0 region return-stack
478:
479: 0 0 region data-stack
480:
481: 0 0 region tib-region
482:
483: ' dictionary ALIAS rom-dictionary
484:
485:
486: : setup-target ( -- ) \G initialize targets memory space
487: s" rom" T $has? H
488: IF \ check for ram and rom...
489: address-space area nip 0<>
490: ram-dictionary area nip 0<>
491: rom-dictionary area nip 0<>
492: and and 0=
493: ABORT" CROSS: define address-space, rom- , ram-dictionary, with rom-support!"
494: THEN
495: address-space area nip
496: IF
497: address-space area
498: ELSE
499: dictionary area
500: THEN
501: nip 0=
502: ABORT" CROSS: define at least address-space or dictionary!!"
503:
504: \ allocate target for each region
505: region-link
506: BEGIN @ dup
507: WHILE dup
508: 0 >rlink - >r
509: r@ >rlen @
510: IF \ allocate mem
511: r@ >rlen @ dup
512:
513: allocatetarget dup image !
514: r@ >rmem !
515:
516: target>bitmask-size allocatetarget
517: dup
518: bit$ !
519: r> >rbm !
520:
521: ELSE r> drop THEN
522: REPEAT ;
523:
524: \ \ switched tdp for rom support 03jun97jaw
525:
526: \ second value is here to store some maximal value for statistics
527: \ tempdp is also embedded here but has nothing to do with rom support
528: \ (needs switched dp)
529:
530: variable tempdp 0 , \ temporary dp for resolving
531: variable tempdp-save
532:
533: 0 [IF]
534: variable romdp 0 , \ Dictionary-Pointer for ramarea
535: variable ramdp 0 , \ Dictionary-Pointer for romarea
536:
537: \
538: variable sramdp \ start of ram-area for forth
539: variable sromdp \ start of rom-area for forth
540:
541: [THEN]
542:
543:
544: 0 value tdp
545: variable fixed \ flag: true: no automatic switching
546: \ false: switching is done automatically
547:
548: \ Switch-Policy:
549: \
550: \ a header is always compiled into rom
551: \ after a created word (create and variable) compilation goes to ram
552: \
553: \ Be careful: If you want to make the data behind create into rom
554: \ you have to put >rom before create!
555:
556: variable constflag constflag off
557:
558: : activate ( region -- )
559: \G next code goes to this region
560: >rdp to tdp ;
561:
562: : (switchram)
563: fixed @ ?EXIT s" rom" T $has? H 0= ?EXIT
564: ram-dictionary activate ;
565:
566: : switchram
567: constflag @
568: IF constflag off ELSE (switchram) THEN ;
569:
570: : switchrom
571: fixed @ ?EXIT rom-dictionary activate ;
572:
573: : >tempdp ( addr -- )
574: tdp tempdp-save ! tempdp to tdp tdp ! ;
575: : tempdp> ( -- )
576: tempdp-save @ to tdp ;
577:
578: : >ram fixed off (switchram) fixed on ;
579: : >rom fixed off switchrom fixed on ;
580: : >auto fixed off switchrom ;
581:
582:
583:
584: \ : romstart dup sromdp ! romdp ! ;
585: \ : ramstart dup sramdp ! ramdp ! ;
586:
587: \ default compilation goes to rom
588: \ when romable support is off, only the rom switch is used (!!)
589: >auto
590:
591: : there tdp @ ;
592:
593: >TARGET
594:
595: \ \ Target Memory Handling
596:
597: \ Byte ordering and cell size 06oct92py
598:
599: : cell+ tcell + ;
600: : cells tcell<< lshift ;
601: : chars ;
602: : char+ 1 + ;
603: : floats tfloat * ;
604:
605: >CROSS
606: : cell/ tcell<< rshift ;
607: >TARGET
608: 20 CONSTANT bl
609: \ TNIL Constant NIL
610:
611: >CROSS
612:
613: bigendian
614: [IF]
615: : S! ( n addr -- ) >r s>d r> tcell bounds swap 1-
616: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
617: : S@ ( addr -- n ) >r 0 0 r> tcell bounds
618: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ;
619: : Sc! ( n addr -- ) >r s>d r> tchar bounds swap 1-
620: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
621: : Sc@ ( addr -- n ) >r 0 0 r> tchar bounds
622: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ;
623: [ELSE]
624: : S! ( n addr -- ) >r s>d r> tcell bounds
625: DO maxbyte ud/mod rot I c! LOOP 2drop ;
626: : S@ ( addr -- n ) >r 0 0 r> tcell bounds swap 1-
627: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ;
628: : Sc! ( n addr -- ) >r s>d r> tchar bounds
629: DO maxbyte ud/mod rot I c! LOOP 2drop ;
630: : Sc@ ( addr -- n ) >r 0 0 r> tchar bounds swap 1-
631: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ;
632: [THEN]
633:
634: : taddr>region ( taddr -- region | 0 )
635: \G finds for a target-address the correct region
636: \G returns 0 if taddr is not in range of a target memory region
637: region-link
638: BEGIN @ dup
639: WHILE dup >r
640: 0 >rlink - >r
641: r@ >rlen @
642: IF dup r@ borders within
643: IF r> r> drop nip EXIT THEN
644: THEN
645: r> drop
646: r>
647: REPEAT
648: 2drop 0 ;
649:
650: : (>regionimage) ( taddr -- 'taddr )
651: dup
652: \ find region we want to address
653: taddr>region dup 0= ABORT" Address out of range!"
654: >r
655: \ calculate offset in region
656: r@ >rstart @ -
657: \ add regions real address in our memory
658: r> >rmem @ + ;
659:
660: \ Bit string manipulation 06oct92py
661: \ 9may93jaw
662: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
663: : bits ( n -- n ) chars Bittable + c@ ;
664:
665: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
666: : +bit ( addr n -- ) >bit over c@ or swap c! ;
667: : -bit ( addr n -- ) >bit invert over c@ and swap c! ;
668:
669: : (relon) ( taddr -- ) bit$ @ swap cell/ +bit ;
670: : (reloff) ( taddr -- ) bit$ @ swap cell/ -bit ;
671:
672: : (>image) ( taddr -- absaddr ) image @ + ;
673:
674: DEFER >image
675: DEFER relon
676: DEFER reloff
677: DEFER correcter
678:
679: T has? relocate H
680: [IF]
681: ' (relon) IS relon
682: ' (reloff) IS reloff
683: ' (>image) IS >image
684: [ELSE]
685: ' drop IS relon
686: ' drop IS reloff
687: ' (correcter) IS >image
688: [THEN]
689:
690: \ Target memory access 06oct92py
691:
692: : align+ ( taddr -- rest )
693: tcell tuck 1- and - [ tcell 1- ] Literal and ;
694: : cfalign+ ( taddr -- rest )
695: \ see kernel.fs:cfaligned
696: /maxalign tuck 1- and - [ /maxalign 1- ] Literal and ;
697:
698: >TARGET
699: : aligned ( taddr -- ta-addr ) dup align+ + ;
700: \ assumes cell alignment granularity (as GNU C)
701:
702: : cfaligned ( taddr1 -- taddr2 )
703: \ see kernel.fs
704: dup cfalign+ + ;
705:
706: : @ ( taddr -- w ) >image S@ ;
707: : ! ( w taddr -- ) >image S! ;
708: : c@ ( taddr -- char ) >image Sc@ ;
709: : c! ( char taddr -- ) >image Sc! ;
710: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
711: : 2! ( x1 x2 taddr -- ) T swap over ! cell+ ! H ;
712:
713: \ Target compilation primitives 06oct92py
714: \ included A! 16may93jaw
715:
716: : here ( -- there ) there ;
717: : allot ( n -- ) tdp +! ;
718: : , ( w -- ) T here H tcell T allot ! H T here drop H ;
719: : c, ( char -- ) T here tchar allot c! H ;
720: : align ( -- ) T here H align+ 0 ?DO bl T c, tchar H +LOOP ;
721: : cfalign ( -- )
722: T here H cfalign+ 0 ?DO bl T c, tchar H +LOOP ;
723:
724: : >address dup 0>= IF tchar / THEN ; \ ?? jaw
725: : A! swap >address swap dup relon T ! H ;
726: : A, ( w -- ) >address T here H relon T , H ;
727:
728: >CROSS
729:
730: : tcmove ( source dest len -- )
731: \G cmove in target memory
732: tchar * bounds
733: ?DO dup T c@ H I T c! H 1+
734: tchar +LOOP drop ;
735:
736: \ \ Load Assembler
737:
738: >TARGET
739: H also Forth definitions \ ." asm: " order
740:
741: : X also target bl word find
742: IF state @ IF compile,
743: ELSE execute THEN
744: ELSE previous ABORT" Cross: access method not supported!"
745: THEN
746: previous ; immediate
747:
748: [IFDEF] asm-include asm-include [THEN] hex
749:
750: previous
751: >CROSS H
752:
753: \ \ -------------------- Compiler Plug Ins 01aug97jaw
754:
755: \ Compiler States
756:
757: Variable comp-state
758: 0 Constant interpreting
759: 1 Constant compiling
760: 2 Constant resolving
761: 3 Constant assembling
762:
763: Defer lit, ( n -- )
764: Defer alit, ( n -- )
765:
766: Defer branch, ( target-addr -- ) \ compiles a branch
767: Defer ?branch, ( target-addr -- ) \ compiles a ?branch
768: Defer branchmark, ( -- branch-addr ) \ reserves room for a branch
769: Defer ?branchmark, ( -- branch-addr ) \ reserves room for a ?branch
770: Defer ?domark, ( -- branch-addr ) \ reserves room for a ?do branch
771: Defer branchto, ( -- ) \ actual program position is target of a branch (do e.g. alignment)
772: Defer branchtoresolve, ( branch-addr -- ) \ resolves a forward reference from branchmark
773: Defer branchfrom, ( -- ) \ ?!
774: Defer branchtomark, ( -- target-addr ) \ marks a branch destination
775:
776: Defer colon, ( tcfa -- ) \ compiles call to tcfa at current position
777: Defer colonmark, ( -- addr ) \ marks a colon call
778: Defer colon-resolve ( tcfa addr -- )
779:
780: Defer addr-resolve ( target-addr addr -- )
781: Defer doer-resolve ( ghost res-pnt target-addr addr -- ghost res-pnt )
782:
783: Defer do, ( -- do-token )
784: Defer ?do, ( -- ?do-token )
785: Defer for, ( -- for-token )
786: Defer loop, ( do-token / ?do-token -- )
787: Defer +loop, ( do-token / ?do-token -- )
788: Defer next, ( for-token )
789:
790: [IFUNDEF] ca>native
791: defer ca>native
792: [THEN]
793:
794: >TARGET
795: DEFER >body \ we need the system >body
796: \ and the target >body
797: >CROSS
798: T 2 cells H VALUE xt>body
799: DEFER doprim, \ compiles start of a primitive
800: DEFER docol, \ compiles start of a colon definition
801: DEFER doer,
802: DEFER fini, \ compiles end of definition ;s
803: DEFER doeshandler,
804: DEFER dodoes,
805:
806: DEFER ]comp \ starts compilation
807: DEFER comp[ \ ends compilation
808:
809: : (cc) T a, H ; ' (cc) IS colon,
810:
811: : (cr) >tempdp ]comp colon, comp[ tempdp> ; ' (cr) IS colon-resolve
812: : (ar) T ! H ; ' (ar) IS addr-resolve
813: : (dr) ( ghost res-pnt target-addr addr )
814: >tempdp drop over
815: dup >magic @ <do:> =
816: IF doer,
817: ELSE dodoes,
818: THEN
819: tempdp> ; ' (dr) IS doer-resolve
820:
821: : (cm) ( -- addr )
822: T here align H
823: -1 colon, ; ' (cm) IS colonmark,
824:
825: >TARGET
826: : compile, colon, ;
827: >CROSS
828:
829: \ file loading
830:
831: : >fl-id 1 cells + ;
832: : >fl-name 2 cells + ;
833:
834: Variable filelist 0 filelist !
835: Create NoFile ," #load-file#"
836: 0 Value filemem
837: : loadfile FileMem ?dup IF >fl-name ELSE NoFile THEN ;
838:
839: 1 [IF] \ !! JAW WIP
840:
841: : add-included-file ( adr len -- )
842: dup char+ >fl-name allocate throw >r
843: r@ >fl-name place
844: filelist @ r@ !
845: r> dup filelist ! to FileMem
846: ;
847:
848: : included? ( c-addr u -- f )
849: filelist
850: BEGIN @ dup
851: WHILE >r r@ 1 cells + count compare 0=
852: IF rdrop 2drop true EXIT THEN
853: r>
854: REPEAT
855: 2drop drop false ;
856:
857: : included
858: \ cr ." Including: " 2dup type ." ..."
859: FileMem >r
860: 2dup add-included-file included
861: r> to FileMem ;
862:
863: : include bl word count included ;
864:
865: : require bl word count included ;
866:
867: [THEN]
868:
869: \ resolve structure
870:
871: : >next ; \ link to next field
872: : >tag cell+ ; \ indecates type of reference: 0: call, 1: address, 2: doer
873: : >taddr cell+ cell+ ;
874: : >ghost 3 cells + ;
875: : >file 4 cells + ;
876: : >line 5 cells + ;
877:
878: : (refered) ( ghost addr tag -- )
879: \G creates a reference to ghost at address taddr
880: rot >r here r@ >link @ , r> >link !
881: ( taddr tag ) ,
882: ( taddr ) ,
883: last-header-ghost @ ,
884: loadfile ,
885: sourceline# ,
886: ;
887:
888: : refered ( ghost tag -- )
889: \G creates a resolve structure
890: T here aligned H swap (refered)
891: ;
892:
893: : killref ( addr ghost -- )
894: \G kills a forward reference to ghost at position addr
895: \G this is used to eleminate a :dovar refence after making a DOES>
896: dup >magic @ <fwd> <> IF 2drop EXIT THEN
897: swap >r >link
898: BEGIN dup @ dup ( addr last this )
899: WHILE dup >taddr @ r@ =
900: IF @ over !
901: ELSE nip THEN
902: REPEAT rdrop 2drop
903: ;
904:
905: Defer resolve-warning
906:
907: : reswarn-test ( ghost res-struct -- ghost res-struct )
908: over cr ." Resolving " >ghostname type dup ." in " >ghost @ >ghostname type ;
909:
910: : reswarn-forward ( ghost res-struct -- ghost res-struct )
911: over warnhead >ghostname type dup ." is referenced in "
912: >ghost @ >ghostname type ;
913:
914: \ ' reswarn-test IS resolve-warning
915:
916: \ resolve 14oct92py
917:
918: : resolve-loop ( ghost resolve-list tcfa -- )
919: >r
920: BEGIN dup WHILE
921: \ dup >tag @ 2 = IF reswarn-forward THEN
922: resolve-warning
923: r@ over >taddr @
924: 2 pick >tag @
925: CASE 0 OF colon-resolve ENDOF
926: 1 OF addr-resolve ENDOF
927: 2 OF doer-resolve ENDOF
928: ENDCASE
929: @ \ next list element
930: REPEAT 2drop rdrop
931: ;
932:
933: \ : resolve-loop ( ghost tcfa -- ghost tcfa )
934: \ >r dup >link @
935: \ BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
936:
937: \ exists 9may93jaw
938:
939: Variable TWarnings
940: TWarnings on
941: Variable Exists-Warnings
942: Exists-Warnings on
943:
944: : exists ( ghost tcfa -- )
945: over GhostNames
946: BEGIN @ dup
947: WHILE 2dup cell+ @ =
948: UNTIL
949: 2 cells + count
950: TWarnings @ Exists-Warnings @ and
951: IF warnhead type ." exists"
952: ELSE 2drop THEN
953: drop swap >link !
954: ELSE true abort" CROSS: Ghostnames inconsistent "
955: THEN ;
956:
957: : resolve ( ghost tcfa -- )
958: \G resolve referencies to ghost with tcfa
959: \ is ghost resolved?, second resolve means another definition with the
960: \ same name
961: over forward? 0= IF exists EXIT THEN
962: \ get linked-list
963: swap >r r@ >link @ swap \ ( list tcfa R: ghost )
964: \ mark ghost as resolved
965: dup r@ >link ! <res> r@ >magic !
966: \ loop through forward referencies
967: r> -rot
968: comp-state @ >r Resolving comp-state !
969: resolve-loop
970: r> comp-state !
971:
972: ['] noop IS resolve-warning
973: ;
974:
975: \ gexecute ghost, 01nov92py
976:
977: : is-forward ( ghost -- )
978: colonmark, 0 (refered) ; \ compile space for call
979:
980: : is-resolved ( ghost -- )
981: >link @ colon, ; \ compile-call
982:
983: : gexecute ( ghost -- )
984: dup @ <fwd> = IF is-forward ELSE is-resolved THEN ;
985:
986: : addr, ( ghost -- )
987: dup @ <fwd> = IF 1 refered 0 T a, H ELSE >link @ T a, H THEN ;
988:
989: \ !! : ghost, ghost gexecute ;
990:
991: \ .unresolved 11may93jaw
992:
993: variable ResolveFlag
994:
995: \ ?touched 11may93jaw
996:
997: : ?touched ( ghost -- flag ) dup forward? swap >link @
998: 0 <> and ;
999:
1000: : .forwarddefs ( ghost -- )
1001: ." appeared in:"
1002: >link
1003: BEGIN @ dup
1004: WHILE cr 5 spaces
1005: dup >ghost @ >ghostname type
1006: ." file " dup >file @ ?dup IF count type ELSE ." CON" THEN
1007: ." line " dup >line @ .dec
1008: REPEAT
1009: drop ;
1010:
1011: : ?resolved ( ghostname -- )
1012: dup cell+ @ ?touched
1013: IF dup
1014: cell+ cell+ count cr type ResolveFlag on
1015: cell+ @ .forwarddefs
1016: ELSE drop
1017: THEN ;
1018:
1019: >MINIMAL
1020: : .unresolved ( -- )
1021: ResolveFlag off cr ." Unresolved: "
1022: Ghostnames
1023: BEGIN @ dup
1024: WHILE dup ?resolved
1025: REPEAT drop ResolveFlag @
1026: IF
1027: -1 abort" Unresolved words!"
1028: ELSE
1029: ." Nothing!"
1030: THEN
1031: cr ;
1032:
1033: : .stats
1034: base @ >r decimal
1035: cr ." named Headers: " headers-named @ .
1036: r> base ! ;
1037:
1038: >CROSS
1039: \ Header states 12dec92py
1040:
1041: : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
1042:
1043: VARIABLE ^imm
1044:
1045: >TARGET
1046: : immediate 40 flag!
1047: ^imm @ @ dup <imm> = IF drop EXIT THEN
1048: <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
1049: <imm> ^imm @ ! ;
1050: : restrict 20 flag! ;
1051:
1052: : isdoer
1053: \G define a forth word as doer, this makes obviously only sence on
1054: \G forth processors such as the PSC1000
1055: <do:> last-header-ghost @ >magic ! ;
1056: >CROSS
1057:
1058: \ ALIAS2 ansforth conform alias 9may93jaw
1059:
1060: : ALIAS2 create here 0 , DOES> @ execute ;
1061: \ usage:
1062: \ ' <name> alias2 bla !
1063:
1064: \ Target Header Creation 01nov92py
1065:
1066: >TARGET
1067: : string, ( addr count -- )
1068: dup T c, H bounds ?DO I c@ T c, H LOOP ;
1069: : name, ( "name" -- ) bl word count T string, cfalign H ;
1070: : view, ( -- ) ( dummy ) ;
1071: >CROSS
1072:
1073: \ Target Document Creation (goes to crossdoc.fd) 05jul95py
1074:
1075: s" ./doc/crossdoc.fd" r/w create-file throw value doc-file-id
1076: \ contains the file-id of the documentation file
1077:
1078: : T-\G ( -- )
1079: source >in @ /string doc-file-id write-line throw
1080: postpone \ ;
1081:
1082: Variable to-doc to-doc on
1083:
1084: : cross-doc-entry ( -- )
1085: to-doc @ tlast @ 0<> and \ not an anonymous (i.e. noname) header
1086: IF
1087: s" " doc-file-id write-line throw
1088: s" make-doc " doc-file-id write-file throw
1089: tlast @ >image count $1F and doc-file-id write-file throw
1090: >in @
1091: [char] ( parse 2drop
1092: [char] ) parse doc-file-id write-file throw
1093: s" )" doc-file-id write-file throw
1094: [char] \ parse 2drop
1095: T-\G
1096: >in !
1097: THEN ;
1098:
1099: \ Target TAGS creation
1100:
1101: s" kernel.TAGS" r/w create-file throw value tag-file-id
1102: \ contains the file-id of the tags file
1103:
1104: Create tag-beg 2 c, 7F c, bl c,
1105: Create tag-end 2 c, bl c, 01 c,
1106: Create tag-bof 1 c, 0C c,
1107:
1108: 2variable last-loadfilename 0 0 last-loadfilename 2!
1109:
1110: : put-load-file-name ( -- )
1111: loadfilename 2@ last-loadfilename 2@ d<>
1112: IF
1113: tag-bof count tag-file-id write-line throw
1114: sourcefilename 2dup
1115: tag-file-id write-file throw
1116: last-loadfilename 2!
1117: s" ,0" tag-file-id write-line throw
1118: THEN ;
1119:
1120: : cross-tag-entry ( -- )
1121: tlast @ 0<> \ not an anonymous (i.e. noname) header
1122: IF
1123: put-load-file-name
1124: source >in @ min tag-file-id write-file throw
1125: tag-beg count tag-file-id write-file throw
1126: tlast @ >image count $1F and tag-file-id write-file throw
1127: tag-end count tag-file-id write-file throw
1128: base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw
1129: \ >in @ 0 <# #s [char] , hold #> tag-file-id write-line throw
1130: s" ,0" tag-file-id write-line throw
1131: base !
1132: THEN ;
1133:
1134: \ Check for words
1135:
1136: Defer skip? ' false IS skip?
1137:
1138: : defined? ( -- flag ) \ name
1139: ghost forward? 0= ;
1140:
1141: : needed? ( -- flag ) \ name
1142: \G returns a false flag when
1143: \G a word is not defined
1144: \G a forward reference exists
1145: \G so the definition is not skipped!
1146: bl word gfind
1147: IF dup forward?
1148: nip
1149: 0=
1150: ELSE drop true THEN ;
1151:
1152: : doer? ( -- flag ) \ name
1153: ghost >magic @ <do:> = ;
1154:
1155: : skip-defs ( -- )
1156: BEGIN refill WHILE source -trailing nip 0= UNTIL THEN ;
1157:
1158: \ Target header creation
1159:
1160: Variable CreateFlag
1161: CreateFlag off
1162:
1163: Variable NoHeaderFlag
1164: NoHeaderFlag off
1165:
1166: : 0.r ( n1 n2 -- )
1167: base @ >r hex
1168: 0 swap <# 0 ?DO # LOOP #> type
1169: r> base ! ;
1170: : .sym
1171: bounds
1172: DO I c@ dup
1173: CASE '/ OF drop ." \/" ENDOF
1174: '\ OF drop ." \\" ENDOF
1175: dup OF emit ENDOF
1176: ENDCASE
1177: LOOP ;
1178:
1179: : (Theader ( "name" -- ghost )
1180: \ >in @ bl word count type 2 spaces >in !
1181: \ wordheaders will always be compiled to rom
1182: switchrom
1183: \ build header in target
1184: NoHeaderFlag @
1185: IF NoHeaderFlag off
1186: ELSE
1187: T align H view,
1188: tlast @ dup 0> IF T 1 cells - H THEN T A, H there tlast !
1189: 1 headers-named +! \ Statistic
1190: >in @ T name, H >in !
1191: THEN
1192: T cfalign here H tlastcfa !
1193: \ Symbol table
1194: \ >in @ cr ." sym:s/CFA=" there 4 0.r ." /" bl word count .sym ." /g" cr >in !
1195: CreateFlag @
1196: IF
1197: >in @ alias2 swap >in ! \ create alias in target
1198: >in @ ghost swap >in !
1199: swap also ghosts ' previous swap ! \ tick ghost and store in alias
1200: CreateFlag off
1201: ELSE ghost
1202: THEN
1203: dup Last-Header-Ghost !
1204: dup >magic ^imm ! \ a pointer for immediate
1205: Already @
1206: IF dup >end tdoes !
1207: ELSE 0 tdoes !
1208: THEN
1209: 80 flag!
1210: cross-doc-entry cross-tag-entry ;
1211:
1212: VARIABLE ;Resolve 1 cells allot
1213: \ this is the resolver information from ":"
1214: \ resolving is done by ";"
1215:
1216: : Theader ( "name" -- ghost )
1217: (THeader dup there resolve 0 ;Resolve ! ;
1218:
1219: >TARGET
1220: : Alias ( cfa -- ) \ name
1221: >in @ skip? IF 2drop EXIT THEN >in !
1222: dup 0< s" prims" T $has? H 0= and
1223: IF
1224: .sourcepos ." needs prim: " >in @ bl word count type >in ! cr
1225: THEN
1226: (THeader over resolve T A, H 80 flag! ;
1227: : Alias: ( cfa -- ) \ name
1228: >in @ skip? IF 2drop EXIT THEN >in !
1229: dup 0< s" prims" T $has? H 0= and
1230: IF
1231: .sourcepos ." needs doer: " >in @ bl word count type >in ! cr
1232: THEN
1233: ghost tuck swap resolve <do:> swap >magic ! ;
1234:
1235: Variable prim#
1236: : first-primitive ( n -- ) prim# ! ;
1237: : Primitive ( -- ) \ name
1238: prim# @ T Alias H -1 prim# +! ;
1239: >CROSS
1240:
1241: \ Conditionals and Comments 11may93jaw
1242:
1243: : ;Cond
1244: postpone ;
1245: swap ! ; immediate
1246:
1247: : Cond: ( -- ) \ name {code } ;
1248: atonce on
1249: ghost
1250: >exec
1251: :NONAME ;
1252:
1253: : restrict? ( -- )
1254: \ aborts on interprete state - ae
1255: state @ 0= ABORT" CROSS: Restricted" ;
1256:
1257: : Comment ( -- )
1258: >in @ atonce on ghost swap >in ! ' swap >exec ! ;
1259:
1260: Comment ( Comment \
1261:
1262: \ compile 10may93jaw
1263:
1264: : compile ( -- ) \ name
1265: restrict?
1266: bl word gfind dup 0= ABORT" CROSS: Can't compile "
1267: 0> ( immediate? )
1268: IF >exec @ compile,
1269: ELSE postpone literal postpone gexecute THEN ;
1270: immediate
1271:
1272: : [G']
1273: \G ticks a ghost and returns its address
1274: bl word gfind 0= ABORT" CROSS: Ghost don't exists"
1275: state @
1276: IF postpone literal
1277: THEN ; immediate
1278:
1279: : ghost>cfa
1280: dup forward? ABORT" CROSS: forward " >link @ ;
1281:
1282: >TARGET
1283:
1284: : ' ( -- cfa )
1285: \ returns the target-cfa of a ghost
1286: bl word gfind 0= ABORT" CROSS: Ghost don't exists"
1287: ghost>cfa ;
1288:
1289: Cond: ['] T ' H alit, ;Cond
1290:
1291: >CROSS
1292:
1293: : [T']
1294: \ returns the target-cfa of a ghost, or compiles it as literal
1295: postpone [G'] state @ IF postpone ghost>cfa ELSE ghost>cfa THEN ; immediate
1296:
1297: \ \ threading modell 13dec92py
1298: \ modularized 14jun97jaw
1299:
1300: : fillcfa ( usedcells -- )
1301: T cells H xt>body swap - 0 ?DO 0 T c, tchar H +LOOP ;
1302:
1303: : (>body) ( cfa -- pfa ) xt>body + ; ' (>body) T IS >body H
1304:
1305: : (doer,) ( ghost -- ) ]comp gexecute comp[ 1 fillcfa ; ' (doer,) IS doer,
1306:
1307: : (docol,) ( -- ) [G'] :docol doer, ; ' (docol,) IS docol,
1308:
1309: : (doprim,) ( -- )
1310: there xt>body + ca>native T a, H 1 fillcfa ; ' (doprim,) IS doprim,
1311:
1312: : (doeshandler,) ( -- )
1313: T cfalign H compile :doesjump T 0 , H ; ' (doeshandler,) IS doeshandler,
1314:
1315: : (dodoes,) ( does-action-ghost -- )
1316: ]comp [G'] :dodoes gexecute comp[
1317: addr,
1318: T here H tcell - reloff 2 fillcfa ; ' (dodoes,) IS dodoes,
1319:
1320: : (lit,) ( n -- ) compile lit T , H ; ' (lit,) IS lit,
1321:
1322: \ if we dont produce relocatable code alit, defaults to lit, jaw
1323: has? relocate
1324: [IF]
1325: : (alit,) ( n -- ) compile lit T a, H ; ' (alit,) IS alit,
1326: [ELSE]
1327: : (alit,) ( n -- ) lit, ; ' (alit,) IS alit,
1328: [THEN]
1329:
1330: : (fini,) compile ;s ; ' (fini,) IS fini,
1331:
1332: [IFUNDEF] (code)
1333: Defer (code)
1334: Defer (end-code)
1335: [THEN]
1336:
1337: >TARGET
1338: : Code
1339: defempty?
1340: (THeader there resolve
1341: [ T e? prims H 0= [IF] T e? ITC H [ELSE] true [THEN] ] [IF]
1342: doprim,
1343: [THEN]
1344: depth (code) ;
1345:
1346: : Code:
1347: defempty?
1348: ghost dup there ca>native resolve <do:> swap >magic !
1349: depth (code) ;
1350:
1351: : end-code
1352: (end-code)
1353: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
1354: ELSE true ABORT" CROSS: Stack empty" THEN
1355: ;
1356:
1357: ( Cond ) : chars tchar * ; ( Cond )
1358:
1359: >CROSS
1360:
1361: \ tLiteral 12dec92py
1362:
1363: >TARGET
1364: Cond: \G T-\G ;Cond
1365:
1366: Cond: Literal ( n -- ) restrict? lit, ;Cond
1367: Cond: ALiteral ( n -- ) restrict? alit, ;Cond
1368:
1369: : Char ( "<char>" -- ) bl word char+ c@ ;
1370: Cond: [Char] ( "<char>" -- ) restrict? Char lit, ;Cond
1371:
1372: \ some special literals 27jan97jaw
1373:
1374: \ !! Known Bug: Special Literals and plug-ins work only correct
1375: \ on 16 and 32 Bit Targets and 32 Bit Hosts!
1376:
1377: Cond: MAXU
1378: restrict?
1379: tcell 1 cells u>
1380: IF compile lit tcell 0 ?DO FF T c, H LOOP
1381: ELSE $ffffffff lit, THEN
1382: ;Cond
1383:
1384: Cond: MINI
1385: restrict?
1386: tcell 1 cells u>
1387: IF compile lit bigendian
1388: IF 80 T c, H tcell 1 ?DO 0 T c, H LOOP
1389: ELSE tcell 1 ?DO 0 T c, H LOOP 80 T c, H
1390: THEN
1391: ELSE tcell 2 = IF $8000 ELSE $80000000 THEN lit, THEN
1392: ;Cond
1393:
1394: Cond: MAXI
1395: restrict?
1396: tcell 1 cells u>
1397: IF compile lit bigendian
1398: IF 7F T c, H tcell 1 ?DO FF T c, H LOOP
1399: ELSE tcell 1 ?DO FF T c, H LOOP 7F T c, H
1400: THEN
1401: ELSE tcell 2 = IF $7fff ELSE $7fffffff THEN lit, THEN
1402: ;Cond
1403:
1404: >CROSS
1405: \ Target compiling loop 12dec92py
1406: \ ">tib trick thrown out 10may93jaw
1407: \ number? defined at the top 11may93jaw
1408:
1409: \ compiled word might leave items on stack!
1410: : tcom ( in name -- )
1411: gfind ?dup IF 0> IF nip >exec @ execute
1412: ELSE nip gexecute THEN EXIT THEN
1413: number? dup IF 0> IF swap lit, THEN lit, drop
1414: ELSE 2drop >in !
1415: ghost gexecute THEN ;
1416:
1417: >TARGET
1418: \ : ; DOES> 13dec92py
1419: \ ] 9may93py/jaw
1420:
1421: : ] state on
1422: Compiling comp-state !
1423: BEGIN
1424: BEGIN >in @ bl word
1425: dup c@ 0= WHILE 2drop refill 0=
1426: ABORT" CROSS: End of file while target compiling"
1427: REPEAT
1428: tcom
1429: state @
1430: 0=
1431: UNTIL ;
1432:
1433: \ by the way: defining a second interpreter (a compiler-)loop
1434: \ is not allowed if a system should be ans conform
1435:
1436: : : ( -- colon-sys ) \ Name
1437: defempty?
1438: constflag off \ don't let this flag work over colon defs
1439: \ just to go sure nothing unwanted happens
1440: >in @ skip? IF drop skip-defs EXIT THEN >in !
1441: (THeader ;Resolve ! there ;Resolve cell+ !
1442: docol, ]comp depth T ] H ;
1443:
1444: : :noname ( -- colon-sys )
1445: T cfalign H there docol, 0 ;Resolve ! depth T ] H ;
1446:
1447: Cond: EXIT ( -- ) restrict? compile ;S ;Cond
1448:
1449: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
1450:
1451: >CROSS
1452: : LastXT ;Resolve @ 0= abort" CROSS: no definition for LastXT"
1453: ;Resolve cell+ @ ;
1454:
1455: >TARGET
1456:
1457: Cond: recurse ( -- ) Last-Ghost @ gexecute ;Cond
1458:
1459: Cond: ; ( -- ) restrict?
1460: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
1461: ELSE true ABORT" CROSS: Stack empty" THEN
1462: fini,
1463: comp[
1464: state off
1465: ;Resolve @
1466: IF ;Resolve @ ;Resolve cell+ @ resolve THEN
1467: Interpreting comp-state !
1468: ;Cond
1469: Cond: [ restrict? state off Interpreting comp-state ! ;Cond
1470:
1471: >CROSS
1472:
1473: Create GhostDummy ghostheader
1474: <res> GhostDummy >magic !
1475:
1476: : !does ( does-action -- )
1477: \ !! zusammenziehen und dodoes, machen!
1478: tlastcfa @ [G'] :dovar killref
1479: \ tlastcfa @ dup there >r tdp ! compile :dodoes r> tdp ! T cell+ ! H ;
1480: \ !! geht so nicht, da dodoes, ghost will!
1481: GhostDummy >link ! GhostDummy
1482: tlastcfa @ >tempdp dodoes, tempdp> ;
1483:
1484: >TARGET
1485: Cond: DOES> restrict?
1486: compile (does>) doeshandler,
1487: \ resolve words made by builders
1488: tdoes @ ?dup IF @ T here H resolve THEN
1489: ;Cond
1490: : DOES> switchrom doeshandler, T here H !does depth T ] H ;
1491:
1492: >CROSS
1493: \ Creation 01nov92py
1494:
1495: \ Builder 11may93jaw
1496:
1497: : Builder ( Create-xt do:-xt "name" -- )
1498: \ builds up a builder in current vocabulary
1499: \ create-xt is executed when word is interpreted
1500: \ do:-xt is executet when the created word from builder is executed
1501: \ for do:-xt an additional entry after the normal ghost-enrys is used
1502:
1503: >in @ alias2 swap dup >in ! >r >r
1504: Make-Ghost
1505: rot swap >exec dup @ ['] NoExec <>
1506: IF 2drop ELSE ! THEN
1507: ,
1508: r> r> >in !
1509: also ghosts ' previous swap ! ;
1510: \ DOES> dup >exec @ execute ;
1511:
1512: : gdoes, ( ghost -- )
1513: \ makes the codefield for a word that is built
1514: >end @ dup forward? 0=
1515: IF
1516: dup >magic @ <do:> =
1517: IF doer,
1518: ELSE dodoes,
1519: THEN
1520: EXIT
1521: THEN
1522: \ compile :dodoes gexecute
1523: \ T here H tcell - reloff
1524: 2 refered
1525: 0 fillcfa
1526: ;
1527:
1528: : TCreate ( <name> -- )
1529: executed-ghost @
1530: CreateFlag on
1531: create-forward-warn
1532: IF ['] reswarn-forward IS resolve-warning THEN
1533: Theader >r dup gdoes,
1534: \ stores execution symantic in the built word
1535: >end @ >exec @ r> >exec ! ;
1536:
1537: : RTCreate ( <name> -- )
1538: \ creates a new word with code-field in ram
1539: executed-ghost @
1540: CreateFlag on
1541: create-forward-warn
1542: IF ['] reswarn-forward IS resolve-warning THEN
1543: \ make Alias
1544: (THeader there 0 T a, H 80 flag! ( S executed-ghost new-ghost )
1545: \ store poiter to code-field
1546: switchram T cfalign H
1547: there swap T ! H
1548: there tlastcfa !
1549: dup there resolve 0 ;Resolve !
1550: >r dup gdoes,
1551: >end @ >exec @ r> >exec ! ;
1552:
1553: : Build: ( -- [xt] [colon-sys] )
1554: :noname postpone TCreate ;
1555:
1556: : BuildSmart: ( -- [xt] [colon-sys] )
1557: :noname
1558: [ T has? rom H [IF] ]
1559: postpone RTCreate
1560: [ [ELSE] ]
1561: postpone TCreate
1562: [ [THEN] ] ;
1563:
1564: : gdoes> ( ghost -- addr flag )
1565: executed-ghost @
1566: state @ IF gexecute true EXIT THEN
1567: >link @ T >body H false ;
1568:
1569: \ DO: ;DO 11may93jaw
1570: \ changed to ?EXIT 10may93jaw
1571:
1572: : DO: ( -- addr [xt] [colon-sys] )
1573: here ghostheader
1574: :noname postpone gdoes> postpone ?EXIT ;
1575:
1576: : by: ( -- addr [xt] [colon-sys] ) \ name
1577: ghost
1578: :noname postpone gdoes> postpone ?EXIT ;
1579:
1580: : ;DO ( addr [xt] [colon-sys] -- addr )
1581: postpone ; ( S addr xt )
1582: over >exec ! ; immediate
1583:
1584: : by ( -- addr ) \ Name
1585: ghost >end @ ;
1586:
1587: >TARGET
1588: \ Variables and Constants 05dec92py
1589:
1590: Build: ( n -- ) ;
1591: by: :docon ( ghost -- n ) T @ H ;DO
1592: Builder (Constant)
1593:
1594: Build: ( n -- ) T , H ;
1595: by (Constant)
1596: Builder Constant
1597:
1598: Build: ( n -- ) T A, H ;
1599: by (Constant)
1600: Builder AConstant
1601:
1602: Build: ( d -- ) T , , H ;
1603: DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO
1604: Builder 2Constant
1605:
1606: BuildSmart: ;
1607: by: :dovar ( ghost -- addr ) ;DO
1608: Builder Create
1609:
1610: T has? rom H [IF]
1611: Build: ( -- ) T here 0 , H switchram T align here swap ! 0 , H ( switchrom ) ;
1612: by (Constant)
1613: Builder Variable
1614: [ELSE]
1615: Build: T 0 , H ;
1616: by Create
1617: Builder Variable
1618: [THEN]
1619:
1620: T has? rom H [IF]
1621: Build: ( -- ) T here 0 , H switchram T align here swap ! 0 , 0 , H ( switchrom ) ;
1622: by (Constant)
1623: Builder 2Variable
1624: [ELSE]
1625: Build: T 0 , 0 , H ;
1626: by Create
1627: Builder 2Variable
1628: [THEN]
1629:
1630: T has? rom H [IF]
1631: Build: ( -- ) T here 0 , H switchram T align here swap ! 0 , H ( switchrom ) ;
1632: by (Constant)
1633: Builder AVariable
1634: [ELSE]
1635: Build: T 0 A, H ;
1636: by Create
1637: Builder AVariable
1638: [THEN]
1639:
1640: \ User variables 04may94py
1641:
1642: >CROSS
1643: Variable tup 0 tup !
1644: Variable tudp 0 tudp !
1645: : u, ( n -- udp )
1646: tup @ tudp @ + T ! H
1647: tudp @ dup T cell+ H tudp ! ;
1648: : au, ( n -- udp )
1649: tup @ tudp @ + T A! H
1650: tudp @ dup T cell+ H tudp ! ;
1651: >TARGET
1652:
1653: Build: T 0 u, , H ;
1654: by: :douser ( ghost -- up-addr ) T @ H tup @ + ;DO
1655: Builder User
1656:
1657: Build: T 0 u, , 0 u, drop H ;
1658: by User
1659: Builder 2User
1660:
1661: Build: T 0 au, , H ;
1662: by User
1663: Builder AUser
1664:
1665: BuildSmart: T , H ;
1666: by (Constant)
1667: Builder Value
1668:
1669: BuildSmart: T A, H ;
1670: by (Constant)
1671: Builder AValue
1672:
1673: BuildSmart: ( -- ) [T'] noop T A, H ;
1674: by: :dodefer ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1675: Builder Defer
1676:
1677: BuildSmart: ( inter comp -- ) swap T immediate A, A, H ;
1678: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1679: Builder interpret/compile:
1680:
1681: \ Sturctures 23feb95py
1682:
1683: >CROSS
1684: : nalign ( addr1 n -- addr2 )
1685: \ addr2 is the aligned version of addr1 wrt the alignment size n
1686: 1- tuck + swap invert and ;
1687: >TARGET
1688:
1689: Build: ;
1690: by: :dofield T @ H + ;DO
1691: Builder (Field)
1692:
1693: Build: ( align1 offset1 align size "name" -- align2 offset2 )
1694: rot dup T , H ( align1 align size offset1 )
1695: + >r nalign r> ;
1696: by (Field)
1697: Builder Field
1698:
1699: : struct T 1 chars 0 H ;
1700: : end-struct T 2Constant H ;
1701:
1702: : cell% ( n -- size align )
1703: T 1 cells H dup ;
1704:
1705: \ ' 2Constant Alias2 end-struct
1706: \ 0 1 T Chars H 2Constant struct
1707:
1708: \ structural conditionals 17dec92py
1709:
1710: >CROSS
1711: : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
1712: : sys? ( sys -- sys ) dup 0= ?struc ;
1713: : >mark ( -- sys ) T here ( dup ." M" hex. ) 0 , H ;
1714:
1715: : branchoffset ( src dest -- ) - tchar / ; \ ?? jaw
1716:
1717: : >resolve ( sys -- ) T here ( dup ." >" hex. ) over branchoffset swap ! H ;
1718:
1719: : <resolve ( sys -- ) T here ( dup ." <" hex. ) branchoffset , H ;
1720:
1721: :noname compile branch T here branchoffset , H ;
1722: IS branch, ( target-addr -- )
1723: :noname compile ?branch T here branchoffset , H ;
1724: IS ?branch, ( target-addr -- )
1725: :noname compile branch T here 0 , H ;
1726: IS branchmark, ( -- branchtoken )
1727: :noname compile ?branch T here 0 , H ;
1728: IS ?branchmark, ( -- branchtoken )
1729: :noname T here 0 , H ;
1730: IS ?domark, ( -- branchtoken )
1731: :noname dup T @ H ?struc T here over branchoffset swap ! H ;
1732: IS branchtoresolve, ( branchtoken -- )
1733: :noname branchto, T here H ;
1734: IS branchtomark, ( -- target-addr )
1735:
1736: >TARGET
1737:
1738: \ Structural Conditionals 12dec92py
1739:
1740: Cond: BUT restrict? sys? swap ;Cond
1741: Cond: YET restrict? sys? dup ;Cond
1742:
1743: 0 [IF]
1744: >CROSS
1745: Variable tleavings
1746: >TARGET
1747:
1748: Cond: DONE ( addr -- ) restrict? tleavings @
1749: BEGIN 2dup u> 0= WHILE dup T @ H swap >resolve REPEAT
1750: tleavings ! drop ;Cond
1751:
1752: >CROSS
1753: : (leave) T here H tleavings @ T , H tleavings ! ;
1754: >TARGET
1755:
1756: Cond: LEAVE restrict? compile branch (leave) ;Cond
1757: Cond: ?LEAVE restrict? compile 0= compile ?branch (leave) ;Cond
1758:
1759: [ELSE]
1760: \ !! This is WIP
1761: \ The problem is (?DO)!
1762: \ perhaps we need a plug-in for (?DO)
1763:
1764: >CROSS
1765: Variable tleavings 0 tleavings !
1766: : (done) ( addr -- )
1767: tleavings @
1768: BEGIN dup
1769: WHILE
1770: >r dup r@ cell+ @ \ address of branch
1771: u> 0= \ lower than DO?
1772: WHILE
1773: r@ 2 cells + @ \ branch token
1774: branchtoresolve,
1775: r@ @ r> free throw
1776: REPEAT r> THEN
1777: tleavings ! drop ;
1778:
1779: >TARGET
1780:
1781: Cond: DONE ( addr -- ) restrict? (done) ;Cond
1782:
1783: >CROSS
1784: : (leave) ( branchtoken -- )
1785: 3 cells allocate throw >r
1786: T here H r@ cell+ !
1787: r@ 2 cells + !
1788: tleavings @ r@ !
1789: r> tleavings ! ;
1790: >TARGET
1791:
1792: Cond: LEAVE restrict? branchmark, (leave) ;Cond
1793: Cond: ?LEAVE restrict? compile 0= ?branchmark, (leave) ;Cond
1794:
1795: [THEN]
1796:
1797: >CROSS
1798: \ !!JW ToDo : Move to general tools section
1799:
1800: : to1 ( x1 x2 xn n -- addr )
1801: \G packs n stack elements in a allocated memory region
1802: dup dup 1+ cells allocate throw dup >r swap 1+
1803: 0 DO tuck ! cell+ LOOP
1804: drop r> ;
1805: : 1to ( addr -- x1 x2 xn )
1806: \G unpacks the elements saved by to1
1807: dup @ swap over cells + swap
1808: 0 DO dup @ swap 1 cells - LOOP
1809: free throw ;
1810:
1811: : loop] branchto, dup <resolve tcell - (done) ;
1812:
1813: : skiploop] ?dup IF branchto, branchtoresolve, THEN ;
1814:
1815: >TARGET
1816:
1817: \ Structural Conditionals 12dec92py
1818:
1819: >TARGET
1820: Cond: AHEAD restrict? branchmark, ;Cond
1821: Cond: IF restrict? ?branchmark, ;Cond
1822: Cond: THEN restrict? sys? branchto, branchtoresolve, ;Cond
1823: Cond: ELSE restrict? sys? compile AHEAD swap compile THEN ;Cond
1824:
1825: Cond: BEGIN restrict? branchtomark, ;Cond
1826: Cond: WHILE restrict? sys? compile IF swap ;Cond
1827: Cond: AGAIN restrict? sys? branch, ;Cond
1828: Cond: UNTIL restrict? sys? ?branch, ;Cond
1829: Cond: REPEAT restrict? over 0= ?struc compile AGAIN compile THEN ;Cond
1830:
1831: Cond: CASE restrict? 0 ;Cond
1832: Cond: OF restrict? 1+ >r compile over compile =
1833: compile IF compile drop r> ;Cond
1834: Cond: ENDOF restrict? >r compile ELSE r> ;Cond
1835: Cond: ENDCASE restrict? compile drop 0 ?DO compile THEN LOOP ;Cond
1836:
1837: \ Structural Conditionals 12dec92py
1838:
1839: :noname \ ?? i think 0 is too much! jaw
1840: 0 compile (do)
1841: branchtomark, 2 to1 ;
1842: IS do, ( -- target-addr )
1843:
1844: \ :noname
1845: \ compile 2dup compile = compile IF
1846: \ compile 2drop compile ELSE
1847: \ compile (do) branchtomark, 2 to1 ;
1848: \ IS ?do,
1849:
1850: :noname
1851: 0 compile (?do) ?domark, (leave)
1852: branchtomark, 2 to1 ;
1853: IS ?do, ( -- target-addr )
1854: :noname compile (for) branchtomark, ;
1855: IS for, ( -- target-addr )
1856: :noname 1to compile (loop) loop] compile unloop skiploop] ;
1857: IS loop, ( target-addr -- )
1858: :noname 1to compile (+loop) loop] compile unloop skiploop] ;
1859: IS +loop, ( target-addr -- )
1860: :noname compile (next) loop] compile unloop ;
1861: IS next, ( target-addr -- )
1862:
1863: Cond: DO restrict? do, ;Cond
1864: Cond: ?DO restrict? ?do, ;Cond
1865: Cond: FOR restrict? for, ;Cond
1866:
1867: Cond: LOOP restrict? sys? loop, ;Cond
1868: Cond: +LOOP restrict? sys? +loop, ;Cond
1869: Cond: NEXT restrict? sys? next, ;Cond
1870:
1871: \ String words 23feb93py
1872:
1873: : ," [char] " parse T string, align H ;
1874:
1875: Cond: ." restrict? compile (.") T ," H ;Cond
1876: Cond: S" restrict? compile (S") T ," H ;Cond
1877: Cond: ABORT" restrict? compile (ABORT") T ," H ;Cond
1878:
1879: Cond: IS T ' >body H compile ALiteral compile ! ;Cond
1880: : IS T >address ' >body ! H ;
1881: Cond: TO T ' >body H compile ALiteral compile ! ;Cond
1882: : TO T ' >body ! H ;
1883:
1884: Cond: defers T ' >body @ compile, H ;Cond
1885: : on T -1 swap ! H ;
1886: : off T 0 swap ! H ;
1887:
1888: \ LINKED ERR" ENV" 2ENV" 18may93jaw
1889:
1890: \ linked list primitive
1891: : linked T here over @ A, swap ! H ;
1892: : chained T linked A, H ;
1893:
1894: : err" s" ErrLink linked" evaluate T , H
1895: [char] " parse T string, align H ;
1896:
1897: : env" [char] " parse s" EnvLink linked" evaluate
1898: T string, align , H ;
1899:
1900: : 2env" [char] " parse s" EnvLink linked" evaluate
1901: here >r T string, align , , H
1902: r> dup T c@ H 80 and swap T c! H ;
1903:
1904: \ compile must be last 22feb93py
1905:
1906: Cond: compile ( -- ) restrict? \ name
1907: bl word gfind dup 0= ABORT" CROSS: Can't compile"
1908: 0> IF gexecute
1909: ELSE dup >magic @ <imm> =
1910: IF gexecute
1911: ELSE compile (compile) addr, THEN THEN ;Cond
1912:
1913: Cond: postpone ( -- ) restrict? \ name
1914: bl word gfind dup 0= ABORT" CROSS: Can't compile"
1915: 0> IF gexecute
1916: ELSE dup >magic @ <imm> =
1917: IF gexecute
1918: ELSE compile (compile) addr, THEN THEN ;Cond
1919:
1920: \ \ minimal definitions
1921:
1922: >MINIMAL
1923: also minimal
1924: \ Usefull words 13feb93py
1925:
1926: : KB 400 * ;
1927:
1928: \ \ [IF] [ELSE] [THEN] ... 14sep97jaw
1929:
1930: \ it is useful to define our own structures and not to rely
1931: \ on the words in the compiler
1932: \ The words in the compiler might be defined with vocabularies
1933: \ this doesn't work with our self-made compile-loop
1934:
1935: Create parsed 20 chars allot \ store word we parsed
1936:
1937: : upcase
1938: parsed count bounds
1939: ?DO I c@ toupper I c! LOOP ;
1940:
1941: : [ELSE]
1942: 1 BEGIN
1943: BEGIN bl word count dup WHILE
1944: comment? parsed place upcase parsed count
1945: 2dup s" [IF]" compare 0= >r
1946: 2dup s" [IFUNDEF]" compare 0= >r
1947: 2dup s" [IFDEF]" compare 0= r> or r> or
1948: IF 2drop 1+
1949: ELSE 2dup s" [ELSE]" compare 0=
1950: IF 2drop 1- dup
1951: IF 1+
1952: THEN
1953: ELSE
1954: 2dup s" [ENDIF]" compare 0= >r
1955: s" [THEN]" compare 0= r> or
1956: IF 1- THEN
1957: THEN
1958: THEN
1959: ?dup 0= ?EXIT
1960: REPEAT
1961: 2drop refill 0=
1962: UNTIL drop ; immediate
1963:
1964: : [THEN] ( -- ) ; immediate
1965:
1966: : [ENDIF] ( -- ) ; immediate
1967:
1968: : [IF] ( flag -- )
1969: 0= IF postpone [ELSE] THEN ; immediate
1970:
1971: Cond: [IF] postpone [IF] ;Cond
1972: Cond: [THEN] postpone [THEN] ;Cond
1973: Cond: [ELSE] postpone [ELSE] ;Cond
1974:
1975: \ define new [IFDEF] and [IFUNDEF] 20may93jaw
1976:
1977: : defined? defined? ;
1978: : needed? needed? ;
1979: : doer? doer? ;
1980:
1981: \ we want to use IFDEF on compiler directives (e.g. E?) in the source, too
1982:
1983: : directive?
1984: bl word count [ ' target >wordlist ] aliteral search-wordlist
1985: dup IF nip THEN ;
1986:
1987: : [IFDEF] >in @ directive? swap >in !
1988: 0= IF defined? ELSE name 2drop true THEN
1989: postpone [IF] ;
1990:
1991: : [IFUNDEF] defined? 0= postpone [IF] ;
1992:
1993: Cond: [IFDEF] postpone [IFDEF] ;Cond
1994:
1995: Cond: [IFUNDEF] postpone [IFUNDEF] ;Cond
1996:
1997: \ C: \- \+ Conditional Compiling 09jun93jaw
1998:
1999: : C: >in @ defined? 0=
2000: IF >in ! T : H
2001: ELSE drop
2002: BEGIN bl word dup c@
2003: IF count comment? s" ;" compare 0= ?EXIT
2004: ELSE refill 0= ABORT" CROSS: Out of Input while C:"
2005: THEN
2006: AGAIN
2007: THEN ;
2008:
2009: also minimal
2010:
2011: \G doesn't skip line when bit is set in debugmask
2012: : \D name evaluate debugmasksource @ and 0= IF postpone \ THEN ;
2013:
2014: \G interprets the line if word is not defined
2015: : \- defined? IF postpone \ THEN ;
2016:
2017: \G interprets the line if word is defined
2018: : \+ defined? 0= IF postpone \ THEN ;
2019:
2020: Cond: \- \- ;Cond
2021: Cond: \+ \+ ;Cond
2022: Cond: \D \D ;Cond
2023:
2024: : ?? bl word find IF execute ELSE drop 0 THEN ;
2025:
2026: : needed:
2027: \G defines ghost for words that we want to be compiled
2028: BEGIN >in @ bl word c@ WHILE >in ! ghost drop REPEAT drop ;
2029:
2030: previous
2031:
2032: \ save-cross 17mar93py
2033:
2034: >CROSS
2035: Create magic s" Gforth2x" here over allot swap move
2036:
2037: bigendian 1+ \ strangely, in magic big=0, little=1
2038: tcell 1 = 0 and or
2039: tcell 2 = 2 and or
2040: tcell 4 = 4 and or
2041: tcell 8 = 6 and or
2042: tchar 1 = $00 and or
2043: tchar 2 = $28 and or
2044: tchar 4 = $50 and or
2045: tchar 8 = $78 and or
2046: magic 7 + c!
2047:
2048: : save-cross ( "image-name" "binary-name" -- )
2049: bl parse ." Saving to " 2dup type cr
2050: w/o bin create-file throw >r
2051: TNIL IF
2052: s" #! " r@ write-file throw
2053: bl parse r@ write-file throw
2054: s" -i" r@ write-file throw
2055: #lf r@ emit-file throw
2056: r@ dup file-position throw drop 8 mod 8 swap ( file-id limit index )
2057: ?do
2058: bl over emit-file throw
2059: loop
2060: drop
2061: magic 8 r@ write-file throw \ write magic
2062: ELSE
2063: bl parse 2drop
2064: THEN
2065: image @ there
2066: r@ write-file throw \ write image
2067: TNIL IF
2068: bit$ @ there 1- tcell>bit rshift 1+
2069: r@ write-file throw \ write tags
2070: THEN
2071: r> close-file throw ;
2072:
2073: : save-region ( addr len -- )
2074: bl parse w/o bin create-file throw >r
2075: swap >image swap r@ write-file throw
2076: r> close-file throw ;
2077:
2078: \ words that should be in minimal
2079:
2080: create s-buffer 50 chars allot
2081:
2082: >MINIMAL
2083: also minimal
2084:
2085: bigendian Constant bigendian
2086: : here there ;
2087: : equ constant ;
2088: : mark there constant ;
2089:
2090: \ compiler directives
2091: : >ram >ram ;
2092: : >rom >rom ;
2093: : >auto >auto ;
2094: : >tempdp >tempdp ;
2095: : tempdp> tempdp> ;
2096: : const constflag on ;
2097: : warnings name 3 = 0= twarnings ! drop ;
2098: : | ;
2099: \ : | NoHeaderFlag on ; \ This is broken (damages the last word)
2100:
2101: : save-cross save-cross ;
2102: : save-region save-region ;
2103: : tdump swap >image swap dump ;
2104:
2105: also forth
2106: [IFDEF] Label : Label defempty? Label ; [THEN]
2107: [IFDEF] start-macros : start-macros defempty? start-macros ; [THEN]
2108: [IFDEF] builttag : builttag builttag ; [THEN]
2109: previous
2110:
2111: : s" [char] " parse s-buffer place s-buffer count ; \ for environment?
2112: : + + ;
2113: : 1+ 1 + ;
2114: : 2+ 2 + ;
2115: : or or ;
2116: : 1- 1- ;
2117: : - - ;
2118: : and and ;
2119: : or or ;
2120: : 2* 2* ;
2121: : * * ;
2122: : / / ;
2123: : dup dup ;
2124: : over over ;
2125: : swap swap ;
2126: : rot rot ;
2127: : drop drop ;
2128: : = = ;
2129: : 0= 0= ;
2130: : lshift lshift ;
2131: : 2/ 2/ ;
2132: : . . ;
2133:
2134: : all-words ['] false IS skip? ;
2135: : needed-words ['] needed? IS skip? ;
2136: : undef-words ['] defined? IS skip? ;
2137:
2138: : \ postpone \ ; immediate
2139: : \G T-\G ; immediate
2140: : ( postpone ( ; immediate
2141: : include bl word count included ;
2142: : require require ;
2143: : .( [char] ) parse type ;
2144: : ." [char] " parse type ;
2145: : cr cr ;
2146:
2147: : times 0 ?DO dup T c, H LOOP drop ; \ used for space table creation
2148: only forth also minimal definitions
2149:
2150: \ cross-compiler words
2151:
2152: : decimal decimal ;
2153: : hex hex ;
2154:
2155: : tudp T tudp H ;
2156: : tup T tup H ;
2157:
2158: : doc-off false T to-doc H ! ;
2159: : doc-on true T to-doc H ! ;
2160: [IFDEF] dbg : dbg dbg ; [THEN]
2161:
2162: minimal
2163:
2164: \ for debugging...
2165: : order order ;
2166: : hwords words ;
2167: : words also ghosts words previous ;
2168: : .s .s ;
2169: : bye bye ;
2170:
2171: \ turnkey direction
2172: : H forth ; immediate
2173: : T minimal ; immediate
2174: : G ghosts ; immediate
2175:
2176: : turnkey 0 set-order also Target definitions
2177: also Minimal also ;
2178:
2179: \ these ones are pefered:
2180:
2181: : lock turnkey ;
2182: : unlock forth also cross ;
2183:
2184: : [[ also unlock ;
2185: : ]] previous previous ;
2186:
2187: unlock definitions also minimal
2188: : lock lock ;
2189: lock
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