[gforth] / gforth / cross.fs

gforth: gforth/cross.fs

1 :	anton	1.1	\ CROSS.FS The Cross-Compiler 06oct92py
2 :			\ Idea and implementation: Bernd Paysan (py)
3 :	anton	1.30
4 :	anton	1.58	\ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
5 :	anton	1.30
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 :	anton	1.1
22 :			\ Log:
23 :			\ changed in ; [ to state off 12may93jaw
24 :			\ included place +place 12may93jaw
25 :			\ for a created word (variable, constant...)
26 :			\ is now an alias in the target voabulary.
27 :			\ this means it is no longer necessary to
28 :			\ switch between vocabularies for variable
29 :			\ initialization 12may93jaw
30 :			\ discovered error in DOES>
31 :			\ replaced !does with (;code) 16may93jaw
32 :			\ made complete redesign and
33 :			\ introduced two vocs method
34 :			\ to be asure that the right words
35 :			\ are found 08jun93jaw
36 :			\ btw: ! works not with 16 bit
37 :			\ targets 09jun93jaw
38 :			\ added: 2user and value 11jun93jaw
39 :
40 :	anton	1.48	\ needed? works better now!!! 01mar97jaw
41 :			\ mach file is only loaded into target
42 :			\ cell corrected
43 :	jwilke	1.52	\ romable extansions 27apr97-5jun97jaw
44 :	pazsan	1.54	\ environmental query support 01sep97jaw
45 :			\ added own [IF] ... [ELSE] ... [THEN] 14sep97jaw
46 :			\ extra resolver for doers 20sep97jaw
47 :			\ added killref for DOES> 20sep97jaw
48 :	anton	1.48
49 :
50 :	jwilke	1.52	hex \ the defualt base for the cross-compiler is hex !!
51 :			Warnings off
52 :
53 :			\ words that are generaly useful
54 :
55 :	pazsan	1.59	: KB 400 * ;
56 :	jwilke	1.52	: >wordlist ( vocabulary-xt -- wordlist-struct )
57 :			also execute get-order swap >r 1- set-order r> ;
58 :
59 :			: umax 2dup u< IF swap THEN drop ;
60 :			: umin 2dup u> IF swap THEN drop ;
61 :	anton	1.1
62 :	pazsan	1.23	: string, ( c-addr u -- )
63 :			\ puts down string as cstring
64 :			dup c, here swap chars dup allot move ;
65 :	pazsan	1.5
66 :	jwilke	1.52	: SetValue ( n -- <name> )
67 :	pazsan	1.54	\G Same behaviour as "Value" if the <name> is not defined
68 :			\G Same behaviour as "to" if <name> is defined
69 :	jwilke	1.52	\G SetValue searches in the current vocabulary
70 :			save-input bl word >r restore-input throw r> count
71 :			get-current search-wordlist
72 :	pazsan	1.56	IF ['] to execute ELSE Value THEN ;
73 :	jwilke	1.52
74 :			: DefaultValue ( n -- <name> )
75 :	pazsan	1.54	\G Same behaviour as "Value" if the <name> is not defined
76 :			\G DefaultValue searches in the current vocabulary
77 :	jwilke	1.52	save-input bl word >r restore-input throw r> count
78 :			get-current search-wordlist
79 :	pazsan	1.56	IF bl word drop 2drop ELSE Value THEN ;
80 :	anton	1.1
81 :			hex
82 :
83 :			Vocabulary Cross
84 :			Vocabulary Target
85 :			Vocabulary Ghosts
86 :			VOCABULARY Minimal
87 :			only Forth also Target also also
88 :			definitions Forth
89 :
90 :			: T previous Cross also Target ; immediate
91 :			: G Ghosts ; immediate
92 :			: H previous Forth also Cross ; immediate
93 :
94 :			forth definitions
95 :
96 :			: T previous Cross also Target ; immediate
97 :			: G Ghosts ; immediate
98 :
99 :			: >cross also Cross definitions previous ;
100 :			: >target also Target definitions previous ;
101 :			: >minimal also Minimal definitions previous ;
102 :
103 :			H
104 :
105 :			>CROSS
106 :
107 :	jwilke	1.52	\ 1 Constant Cross-Flag \ to check whether assembler compiler plug-ins are
108 :			\ for cross-compiling
109 :			\ No! we use "[IFUNDEF]" there to find out whether we are target compiling!!!
110 :
111 :			: comment? ( c-addr u -- c-addr u )
112 :			2dup s" (" compare 0=
113 :			IF postpone (
114 :			ELSE 2dup s" \" compare 0= IF postpone \ THEN
115 :			THEN ;
116 :
117 :			\ Begin CROSS COMPILER:
118 :
119 :
120 :
121 :			\ \ -------------------- Error Handling 05aug97jaw
122 :
123 :			\ Flags
124 :
125 :			also forth definitions \ these values may be predefined before
126 :			\ the cross-compiler is loaded
127 :
128 :			false DefaultValue stack-warn \ check on empty stack at any definition
129 :			false DefaultValue create-forward-warn \ warn on forward declaration of created words
130 :
131 :			[IFUNDEF] DebugMaskSrouce Variable DebugMaskSource 0 DebugMaskSource ! [THEN]
132 :			[IFUNDEF] DebugMaskCross Variable DebugMaskCross 0 DebugMaskCross ! [THEN]
133 :
134 :			previous >CROSS
135 :
136 :	jwilke	1.53	: .dec
137 :			base @ decimal swap . base ! ;
138 :
139 :	jwilke	1.52	: .sourcepos
140 :			cr sourcefilename type ." :"
141 :	jwilke	1.53	sourceline# .dec ;
142 :	jwilke	1.52
143 :			: warnhead
144 :			\G display error-message head
145 :			\G perhaps with linenumber and filename
146 :			.sourcepos ." Warning: " ;
147 :
148 :			: empty? depth IF .sourcepos ." Stack not empty!" THEN ;
149 :
150 :			stack-warn [IF]
151 :			: defempty? empty? ;
152 :			[ELSE]
153 :			: defempty? ; immediate
154 :			[THEN]
155 :
156 :
157 :	pazsan	1.54
158 :	jwilke	1.52	\ \ GhostNames Ghosts 9may93jaw
159 :
160 :			\ second name source to search trough list
161 :
162 :			VARIABLE GhostNames
163 :			0 GhostNames !
164 :
165 :			: GhostName ( -- addr )
166 :			here GhostNames @ , GhostNames ! here 0 ,
167 :			bl word count
168 :			\ 2dup type space
169 :			string, \ !! cfalign ?
170 :			align ;
171 :
172 :			\ Ghost Builder 06oct92py
173 :
174 :			\ <T T> new version with temp variable 10may93jaw
175 :
176 :			VARIABLE VocTemp
177 :
178 :			: <T get-current VocTemp ! also Ghosts definitions ;
179 :			: T> previous VocTemp @ set-current ;
180 :
181 :			hex
182 :			4711 Constant <fwd> 4712 Constant <res>
183 :			4713 Constant <imm> 4714 Constant <do:>
184 :
185 :			\ iForth makes only immediate directly after create
186 :			\ make atonce trick! ?
187 :
188 :			Variable atonce atonce off
189 :
190 :			: NoExec true ABORT" CROSS: Don't execute ghost" ;
191 :
192 :			: GhostHeader <fwd> , 0 , ['] NoExec , ;
193 :
194 :			: >magic ; \ type of ghost
195 :			: >link cell+ ; \ pointer where ghost is in target, or if unresolved
196 :			\ points to the where we have to resolve (linked-list)
197 :			: >exec cell+ cell+ ; \ execution symantics (while target compiling) of ghost
198 :			: >end 3 cells + ; \ room for additional tags
199 :			\ for builder (create, variable...) words the
200 :			\ execution symantics of words built are placed here
201 :
202 :			Variable executed-ghost \ last executed ghost, needed in tcreate and gdoes>
203 :			Variable last-ghost \ last ghost that is created
204 :			Variable last-header-ghost \ last ghost definitions with header
205 :
206 :			: Make-Ghost ( "name" -- ghost )
207 :			>in @ GhostName swap >in !
208 :			<T Create atonce @ IF immediate atonce off THEN
209 :			here tuck swap ! ghostheader T>
210 :			dup last-ghost !
211 :			DOES> dup executed-ghost ! >exec @ execute ;
212 :
213 :			\ ghost words 14oct92py
214 :			\ changed: 10may93py/jaw
215 :
216 :			: gfind ( string -- ghost true/1 / string false )
217 :			\ searches for string in word-list ghosts
218 :			dup count [ ' ghosts >wordlist ] ALiteral search-wordlist
219 :			dup IF >r >body nip r> THEN ;
220 :
221 :			: gdiscover ( xt -- ghost true \| xt false )
222 :			GhostNames
223 :			BEGIN @ dup
224 :			WHILE 2dup
225 :			cell+ @ dup >magic @ <fwd> <>
226 :			>r >link @ = r> and
227 :			IF cell+ @ nip true EXIT THEN
228 :			REPEAT
229 :			drop false ;
230 :
231 :			VARIABLE Already
232 :
233 :			: ghost ( "name" -- ghost )
234 :			Already off
235 :			>in @ bl word gfind IF Already on nip EXIT THEN
236 :			drop >in ! Make-Ghost ;
237 :
238 :			: >ghostname ( ghost -- adr len )
239 :			GhostNames
240 :			BEGIN @ dup
241 :			WHILE 2dup cell+ @ =
242 :			UNTIL nip 2 cells + count
243 :	pazsan	1.54	ELSE 2drop
244 :			\ true abort" CROSS: Ghostnames inconsistent"
245 :			s" ?!?!?!"
246 :	jwilke	1.52	THEN ;
247 :
248 :			' >ghostname ALIAS @name
249 :
250 :			: forward? ( ghost -- flag )
251 :			>magic @ <fwd> = ;
252 :
253 :			\ Predefined ghosts 12dec92py
254 :
255 :			ghost 0= drop
256 :			ghost branch ghost ?branch 2drop
257 :			ghost (do) ghost (?do) 2drop
258 :			ghost (for) drop
259 :			ghost (loop) ghost (+loop) 2drop
260 :			ghost (next) drop
261 :			ghost unloop ghost ;S 2drop
262 :			ghost lit ghost (compile) ghost ! 2drop drop
263 :			ghost (does>) ghost noop 2drop
264 :			ghost (.") ghost (S") ghost (ABORT") 2drop drop
265 :			ghost ' drop
266 :			ghost :docol ghost :doesjump ghost :dodoes 2drop drop
267 :	pazsan	1.54	ghost :dovar drop
268 :	jwilke	1.52	ghost over ghost = ghost drop 2drop drop
269 :			ghost - drop
270 :	pazsan	1.54	ghost 2drop drop
271 :			ghost 2dup drop
272 :	jwilke	1.52
273 :			\ \ Parameter for target systems 06oct92py
274 :
275 :			\ we define it ans like...
276 :			wordlist Constant target-environment
277 :
278 :			VARIABLE env-current \ save information of current dictionary to restore with environ>
279 :
280 :			: >ENVIRON get-current env-current ! target-environment set-current ;
281 :			: ENVIRON> env-current @ set-current ;
282 :	pazsan	1.43
283 :	anton	1.48	>TARGET
284 :	pazsan	1.43
285 :	jwilke	1.52	: environment?
286 :			target-environment search-wordlist
287 :			IF execute true ELSE false THEN ;
288 :
289 :			: e? name T environment? H 0= ABORT" environment variable not defined!" ;
290 :
291 :	jwilke	1.53	: has? name T environment? H
292 :			IF \ environment variable is present, return its value
293 :			ELSE \ environment variable is not present, return false
294 :			\ !! JAW abort is just for testing
295 :			false true ABORT" arg"
296 :			THEN ;
297 :	jwilke	1.52
298 :			: $has? T environment? H IF ELSE false THEN ;
299 :	anton	1.48
300 :	pazsan	1.54	>ENVIRON get-order get-current swap 1+ set-order
301 :			true SetValue compiler
302 :	jwilke	1.53	true SetValue cross
303 :	pazsan	1.54	true SetValue standard-threading
304 :			>TARGET previous
305 :	jwilke	1.52
306 :	pazsan	1.59
307 :	jwilke	1.52	mach-file count included hex
308 :	pazsan	1.43
309 :	jwilke	1.53	>ENVIRON
310 :
311 :	pazsan	1.54	T has? ec H
312 :			[IF]
313 :			false DefaultValue relocate
314 :			false DefaultValue file
315 :			false DefaultValue OS
316 :			false DefaultValue prims
317 :			false DefaultValue floating
318 :			false DefaultValue glocals
319 :			false DefaultValue dcomps
320 :			false DefaultValue hash
321 :			false DefaultValue xconds
322 :			false DefaultValue header
323 :			[THEN]
324 :
325 :			true DefaultValue interpreter
326 :			true DefaultValue ITC
327 :			false DefaultValue rom
328 :	jwilke	1.53
329 :	jwilke	1.52	>TARGET
330 :	jwilke	1.53	s" relocate" T environment? H
331 :			[IF] SetValue NIL
332 :			[ELSE] >ENVIRON T NIL H SetValue relocate
333 :			[THEN]
334 :	pazsan	1.43
335 :			>CROSS
336 :
337 :	jwilke	1.52	\ \ Create additional parameters 19jan95py
338 :	pazsan	1.19
339 :	pazsan	1.57	1 8 lshift Constant maxbyte
340 :	pazsan	1.19	T
341 :	anton	1.48	NIL Constant TNIL
342 :	pazsan	1.19	cell Constant tcell
343 :			cell<< Constant tcell<<
344 :			cell>bit Constant tcell>bit
345 :			bits/byte Constant tbits/byte
346 :	pazsan	1.57	bits/byte 8 / Constant tchar
347 :	pazsan	1.19	float Constant tfloat
348 :	pazsan	1.57	1 bits/byte lshift Constant tmaxbyte
349 :	pazsan	1.19	H
350 :
351 :	anton	1.48	\ Variables 06oct92py
352 :
353 :			Variable image
354 :			Variable tlast TNIL tlast ! \ Last name field
355 :			Variable tlastcfa \ Last code field
356 :			Variable tdoes \ Resolve does> calls
357 :			Variable bit$
358 :	jwilke	1.52
359 :			\ statistics 10jun97jaw
360 :
361 :			Variable headers-named 0 headers-named !
362 :			Variable user-vars 0 user-vars !
363 :
364 :			\ Memory initialisation 05dec92py
365 :
366 :			[IFDEF] Memory \ Memory is a bigFORTH feature
367 :			also Memory
368 :			: initmem ( var len -- )
369 :			2dup swap handle! >r @ r> erase ;
370 :			toss
371 :			[ELSE]
372 :			: initmem ( var len -- )
373 :			tuck allocate abort" CROSS: No memory for target"
374 :			( len var adr ) dup rot !
375 :			( len adr ) swap erase ;
376 :			[THEN]
377 :
378 :			\ MakeKernal 12dec92py
379 :
380 :			: makekernel ( targetsize -- targetsize )
381 :			bit$ over 1- tcell>bit rshift 1+ initmem
382 :			image over initmem ;
383 :
384 :			>MINIMAL
385 :			: makekernel makekernel ;
386 :
387 :
388 :			>CROSS
389 :
390 :	pazsan	1.54	\ \ memregion.fs
391 :	jwilke	1.52
392 :
393 :			Variable last-defined-region \ pointer to last defined region
394 :			Variable region-link \ linked list with all regions
395 :			Variable mirrored-link \ linked list for mirrored regions
396 :			0 dup mirrored-link ! region-link !
397 :
398 :
399 :			: >rdp 2 cells + ;
400 :			: >rlen cell+ ;
401 :			: >rstart ;
402 :
403 :
404 :			: region ( addr len -- ) \G create a new region
405 :			\ check whether predefined region exists
406 :			save-input bl word find >r >r restore-input throw r> r> 0=
407 :			IF \ make region
408 :			drop
409 :			save-input create restore-input throw
410 :			here last-defined-region !
411 :			over ( startaddr ) , ( length ) , ( dp ) ,
412 :			region-link linked name string,
413 :			ELSE \ store new parameters in region
414 :			bl word drop
415 :			>body >r r@ last-defined-region !
416 :			r@ cell+ ! dup r@ ! r> 2 cells + !
417 :			THEN ;
418 :
419 :			: borders ( region -- startaddr endaddr ) \G returns lower and upper region border
420 :			dup @ swap cell+ @ over + ;
421 :
422 :			: extent ( region -- startaddr len ) \G returns the really used area
423 :			dup @ swap 2 cells + @ over - ;
424 :
425 :			: area ( region -- startaddr totallen ) \G returns the total area
426 :			dup @ swap cell+ @ ;
427 :
428 :			: mirrored \G mark a region as mirrored
429 :			mirrored-link
430 :			linked last-defined-region @ , ;
431 :
432 :			: .addr
433 :			base @ >r hex
434 :			tcell 2 u>
435 :			IF s>d <# # # # # '. hold # # # # #> type
436 :			ELSE s>d <# # # # # # #> type
437 :			THEN r> base ! ;
438 :
439 :			: .regions \G display region statistic
440 :
441 :			\ we want to list the regions in the right order
442 :			\ so first collect all regions on stack
443 :			0 region-link @
444 :			BEGIN dup WHILE dup @ REPEAT drop
445 :			BEGIN dup
446 :			WHILE cr 3 cells - >r
447 :			r@ 4 cells + count tuck type
448 :			12 swap - 0 max spaces space
449 :			." Start: " r@ @ dup .addr space
450 :			." End: " r@ 1 cells + @ + .addr space
451 :			." DP: " r> 2 cells + @ .addr
452 :			REPEAT drop
453 :	jwilke	1.53	s" rom" T $has? H 0= ?EXIT
454 :	jwilke	1.52	cr ." Mirrored:"
455 :			mirrored-link @
456 :			BEGIN dup
457 :			WHILE space dup cell+ @ 4 cells + 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 :	jwilke	1.53	T has? rom H
470 :	jwilke	1.52	[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 :	jwilke	1.53	s" rom" T $has? H
488 :	jwilke	1.52	IF \ check for ram and rom...
489 :			address-space area nip
490 :			ram-dictionary area nip
491 :			rom-dictionary area nip
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 :			dup 0=
502 :			ABORT" CROSS: define at least address-space or dictionary!!"
503 :			+ makekernel drop ;
504 :
505 :	pazsan	1.54	\ \ switched tdp for rom support 03jun97jaw
506 :	jwilke	1.52
507 :			\ second value is here to store some maximal value for statistics
508 :			\ tempdp is also embedded here but has nothing to do with rom support
509 :			\ (needs switched dp)
510 :
511 :			variable tempdp 0 , \ temporary dp for resolving
512 :			variable tempdp-save
513 :
514 :			0 [IF]
515 :			variable romdp 0 , \ Dictionary-Pointer for ramarea
516 :			variable ramdp 0 , \ Dictionary-Pointer for romarea
517 :
518 :			\
519 :			variable sramdp \ start of ram-area for forth
520 :			variable sromdp \ start of rom-area for forth
521 :
522 :			[THEN]
523 :
524 :
525 :			0 value tdp
526 :			variable fixed \ flag: true: no automatic switching
527 :			\ false: switching is done automatically
528 :
529 :			\ Switch-Policy:
530 :			\
531 :			\ a header is always compiled into rom
532 :			\ after a created word (create and variable) compilation goes to ram
533 :			\
534 :			\ Be careful: If you want to make the data behind create into rom
535 :			\ you have to put >rom before create!
536 :
537 :			variable constflag constflag off
538 :
539 :			: (switchram)
540 :	jwilke	1.53	fixed @ ?EXIT s" rom" T $has? H 0= ?EXIT
541 :	jwilke	1.52	ram-dictionary >rdp to tdp ;
542 :
543 :			: switchram
544 :			constflag @
545 :			IF constflag off ELSE (switchram) THEN ;
546 :
547 :			: switchrom
548 :			fixed @ ?EXIT rom-dictionary >rdp to tdp ;
549 :
550 :			: >tempdp ( addr -- )
551 :			tdp tempdp-save ! tempdp to tdp tdp ! ;
552 :			: tempdp> ( -- )
553 :			tempdp-save @ to tdp ;
554 :
555 :			: >ram fixed off (switchram) fixed on ;
556 :			: >rom fixed off switchrom fixed on ;
557 :			: >auto fixed off switchrom ;
558 :
559 :
560 :
561 :			\ : romstart dup sromdp ! romdp ! ;
562 :			\ : ramstart dup sramdp ! ramdp ! ;
563 :
564 :			\ default compilation goed to rom
565 :			\ when romable support is off, only the rom switch is used (!!)
566 :			>auto
567 :
568 :	anton	1.48	: there tdp @ ;
569 :
570 :	jwilke	1.52	>TARGET
571 :	anton	1.48
572 :	jwilke	1.52	\ \ Target Memory Handling
573 :	anton	1.1
574 :			\ Byte ordering and cell size 06oct92py
575 :
576 :	pazsan	1.19	: cell+ tcell + ;
577 :			: cells tcell<< lshift ;
578 :	anton	1.1	: chars ;
579 :	anton	1.48	: char+ 1 + ;
580 :	pazsan	1.19	: floats tfloat * ;
581 :	anton	1.6
582 :	anton	1.1	>CROSS
583 :	pazsan	1.19	: cell/ tcell<< rshift ;
584 :	anton	1.1	>TARGET
585 :			20 CONSTANT bl
586 :	jwilke	1.52	\ TNIL Constant NIL
587 :	anton	1.1
588 :			>CROSS
589 :
590 :	pazsan	1.20	bigendian
591 :			[IF]
592 :	jwilke	1.52	: S! ( n addr -- ) >r s>d r> tcell bounds swap 1-
593 :	pazsan	1.20	DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
594 :	jwilke	1.52	: S@ ( addr -- n ) >r 0 0 r> tcell bounds
595 :	pazsan	1.20	DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ;
596 :	pazsan	1.57	: Sc! ( n addr -- ) >r s>d r> tchar bounds swap 1-
597 :			DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
598 :			: Sc@ ( addr -- n ) >r 0 0 r> tchar bounds
599 :			DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ;
600 :	pazsan	1.19	[ELSE]
601 :	jwilke	1.52	: S! ( n addr -- ) >r s>d r> tcell bounds
602 :	pazsan	1.20	DO maxbyte ud/mod rot I c! LOOP 2drop ;
603 :	jwilke	1.52	: S@ ( addr -- n ) >r 0 0 r> tcell bounds swap 1-
604 :	pazsan	1.20	DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ;
605 :	pazsan	1.57	: Sc! ( n addr -- ) >r s>d r> tchar bounds
606 :			DO maxbyte ud/mod rot I c! LOOP 2drop ;
607 :			: Sc@ ( addr -- n ) >r 0 0 r> tchar bounds swap 1-
608 :			DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ;
609 :	anton	1.1	[THEN]
610 :
611 :			>CROSS
612 :			\ Bit string manipulation 06oct92py
613 :			\ 9may93jaw
614 :			CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
615 :			: bits ( n -- n ) chars Bittable + c@ ;
616 :
617 :			: >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
618 :			: +bit ( addr n -- ) >bit over c@ or swap c! ;
619 :	pazsan	1.4	: -bit ( addr n -- ) >bit invert over c@ and swap c! ;
620 :	anton	1.1	: relon ( taddr -- ) bit$ @ swap cell/ +bit ;
621 :	pazsan	1.4	: reloff ( taddr -- ) bit$ @ swap cell/ -bit ;
622 :	anton	1.1
623 :			\ Target memory access 06oct92py
624 :
625 :			: align+ ( taddr -- rest )
626 :	anton	1.48	tcell tuck 1- and - [ tcell 1- ] Literal and ;
627 :	anton	1.22	: cfalign+ ( taddr -- rest )
628 :	pazsan	1.39	\ see kernel.fs:cfaligned
629 :	pazsan	1.43	/maxalign tuck 1- and - [ /maxalign 1- ] Literal and ;
630 :	anton	1.1
631 :			>TARGET
632 :			: aligned ( taddr -- ta-addr ) dup align+ + ;
633 :			\ assumes cell alignment granularity (as GNU C)
634 :
635 :	anton	1.22	: cfaligned ( taddr1 -- taddr2 )
636 :	pazsan	1.39	\ see kernel.fs
637 :	anton	1.22	dup cfalign+ + ;
638 :
639 :	anton	1.1	>CROSS
640 :			: >image ( taddr -- absaddr ) image @ + ;
641 :			>TARGET
642 :	jwilke	1.52	: @ ( taddr -- w ) >image S@ ;
643 :			: ! ( w taddr -- ) >image S! ;
644 :	pazsan	1.57	: c@ ( taddr -- char ) >image Sc@ ;
645 :			: c! ( char taddr -- ) >image Sc! ;
646 :	anton	1.7	: 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
647 :			: 2! ( x1 x2 taddr -- ) T swap over ! cell+ ! H ;
648 :	anton	1.1
649 :			\ Target compilation primitives 06oct92py
650 :			\ included A! 16may93jaw
651 :
652 :			: here ( -- there ) there ;
653 :			: allot ( n -- ) tdp +! ;
654 :	jwilke	1.52	: , ( w -- ) T here H tcell T allot ! H T here drop H ;
655 :	pazsan	1.57	: c, ( char -- ) T here tchar allot c! H ;
656 :	anton	1.1	: align ( -- ) T here H align+ 0 ?DO bl T c, H LOOP ;
657 :	anton	1.22	: cfalign ( -- )
658 :	pazsan	1.59	T here H cfalign+ 0 ?DO bl T c, tchar H +LOOP ;
659 :	anton	1.1
660 :	pazsan	1.59	: >address dup 0>= IF tchar / THEN ;
661 :			: A! swap >address swap dup relon T ! H ;
662 :			: A, ( w -- ) >address T here H relon T , H ;
663 :	anton	1.1
664 :			>CROSS
665 :
666 :	jwilke	1.52	: tcmove ( source dest len -- )
667 :			\G cmove in target memory
668 :	pazsan	1.57	tchar * bounds
669 :	jwilke	1.52	?DO dup T c@ H I T c! H 1+
670 :	pazsan	1.57	tchar +LOOP drop ;
671 :	anton	1.1
672 :			>TARGET
673 :	jwilke	1.52	H also Forth definitions \ ." asm: " order
674 :	anton	1.1
675 :	jwilke	1.52	: X also target bl word find
676 :			IF state @ IF compile,
677 :			ELSE execute THEN
678 :			ELSE previous ABORT" Cross: access method not supported!"
679 :			THEN
680 :			previous ; immediate
681 :	anton	1.1
682 :	jwilke	1.52	[IFDEF] asm-include asm-include [THEN] hex
683 :	anton	1.1
684 :	jwilke	1.52	previous
685 :			>CROSS H
686 :	anton	1.1
687 :	jwilke	1.52	\ \ -------------------- Compiler Plug Ins 01aug97jaw
688 :	anton	1.1
689 :	pazsan	1.54	\ Compiler States
690 :
691 :			Variable comp-state
692 :			0 Constant interpreting
693 :			1 Constant compiling
694 :			2 Constant resolving
695 :			3 Constant assembling
696 :
697 :	jwilke	1.52	Defer lit, ( n -- )
698 :			Defer alit, ( n -- )
699 :	pazsan	1.54
700 :			Defer branch, ( target-addr -- ) \ compiles a branch
701 :			Defer ?branch, ( target-addr -- ) \ compiles a ?branch
702 :			Defer branchmark, ( -- branch-addr ) \ reserves room for a branch
703 :			Defer ?branchmark, ( -- branch-addr ) \ reserves room for a ?branch
704 :			Defer ?domark, ( -- branch-addr ) \ reserves room for a ?do branch
705 :			Defer branchto, ( -- ) \ actual program position is target of a branch (do e.g. alignment)
706 :			Defer branchtoresolve, ( branch-addr -- ) \ resolves a forward reference from branchmark
707 :			Defer branchfrom, ( -- ) \ ?!
708 :			Defer branchtomark, ( -- target-addr ) \ marks a branch destination
709 :
710 :	jwilke	1.52	Defer colon, ( tcfa -- ) \ compiles call to tcfa at current position
711 :	pazsan	1.54	Defer colonmark, ( -- addr ) \ marks a colon call
712 :	jwilke	1.52	Defer colon-resolve ( tcfa addr -- )
713 :	pazsan	1.54
714 :	jwilke	1.52	Defer addr-resolve ( target-addr addr -- )
715 :	pazsan	1.54	Defer doer-resolve ( ghost res-pnt target-addr addr -- ghost res-pnt )
716 :
717 :			Defer do, ( -- do-token )
718 :			Defer ?do, ( -- ?do-token )
719 :			Defer for, ( -- for-token )
720 :			Defer loop, ( do-token / ?do-token -- )
721 :			Defer +loop, ( do-token / ?do-token -- )
722 :			Defer next, ( for-token )
723 :	anton	1.1
724 :	jwilke	1.52	[IFUNDEF] ca>native
725 :			defer ca>native
726 :			[THEN]
727 :	anton	1.1
728 :	jwilke	1.52	>TARGET
729 :			DEFER >body \ we need the system >body
730 :			\ and the target >body
731 :			>CROSS
732 :			T 2 cells H VALUE xt>body
733 :	pazsan	1.54	DEFER doprim, \ compiles start of a primitive
734 :			DEFER docol, \ compiles start of a colon definition
735 :	jwilke	1.52	DEFER doer,
736 :			DEFER fini, \ compiles end of definition ;s
737 :			DEFER doeshandler,
738 :			DEFER dodoes,
739 :
740 :			DEFER ]comp \ starts compilation
741 :			DEFER comp[ \ ends compilation
742 :
743 :	pazsan	1.54	: (cc) T a, H ; ' (cc) IS colon,
744 :
745 :			: (cr) >tempdp ]comp colon, comp[ tempdp> ; ' (cr) IS colon-resolve
746 :			: (ar) T ! H ; ' (ar) IS addr-resolve
747 :			: (dr) ( ghost res-pnt target-addr addr )
748 :			>tempdp drop over
749 :			dup >magic @ <do:> =
750 :			IF doer,
751 :			ELSE dodoes,
752 :			THEN
753 :			tempdp> ; ' (dr) IS doer-resolve
754 :
755 :			: (cm) ( -- addr )
756 :			T here align H
757 :			-1 colon, ; ' (cm) IS colonmark,
758 :	anton	1.1
759 :	jwilke	1.52	>TARGET
760 :			: compile, colon, ;
761 :			>CROSS
762 :	anton	1.1
763 :	jwilke	1.53	\ file loading
764 :
765 :	pazsan	1.54	: >fl-id 1 cells + ;
766 :			: >fl-name 2 cells + ;
767 :
768 :	jwilke	1.53	Variable filelist 0 filelist !
769 :	pazsan	1.54	0 Value filemem
770 :			: loadfile filemem >fl-name ;
771 :	jwilke	1.53
772 :	pazsan	1.54	1 [IF] \ !! JAW WIP
773 :	anton	1.1
774 :	jwilke	1.53	: add-included-file ( adr len -- )
775 :	pazsan	1.54	dup char+ >fl-name allocate throw >r
776 :			r@ >fl-name place
777 :	jwilke	1.53	filelist @ r@ !
778 :	pazsan	1.54	r> dup filelist ! to FileMem
779 :			;
780 :	jwilke	1.53
781 :			: included? ( c-addr u -- f )
782 :			filelist
783 :			BEGIN @ dup
784 :			WHILE >r r@ 1 cells + count compare 0=
785 :			IF rdrop 2drop true EXIT THEN
786 :			r>
787 :			REPEAT
788 :			2drop drop false ;
789 :
790 :			: included
791 :	pazsan	1.54	\ cr ." Including: " 2dup type ." ..."
792 :			FileMem >r
793 :			2dup add-included-file included
794 :			r> to FileMem ;
795 :	jwilke	1.53
796 :			: include bl word count included ;
797 :
798 :			: require bl word count included ;
799 :
800 :			[THEN]
801 :	anton	1.1
802 :	jwilke	1.52	\ resolve structure
803 :	anton	1.1
804 :	jwilke	1.52	: >next ; \ link to next field
805 :	pazsan	1.54	: >tag cell+ ; \ indecates type of reference: 0: call, 1: address, 2: doer
806 :	jwilke	1.53	: >taddr cell+ cell+ ;
807 :	jwilke	1.52	: >ghost 3 cells + ;
808 :	jwilke	1.53	: >file 4 cells + ;
809 :			: >line 5 cells + ;
810 :	anton	1.48
811 :	pazsan	1.54	: (refered) ( ghost addr tag -- )
812 :			\G creates a reference to ghost at address taddr
813 :			rot >r here r@ >link @ , r> >link !
814 :			( taddr tag ) ,
815 :			( taddr ) ,
816 :			last-header-ghost @ ,
817 :			loadfile ,
818 :			sourceline# ,
819 :			;
820 :
821 :	jwilke	1.52	: refered ( ghost tag -- )
822 :	jwilke	1.53	\G creates a resolve structure
823 :	pazsan	1.54	T here aligned H swap (refered)
824 :			;
825 :
826 :			: killref ( addr ghost -- )
827 :			\G kills a forward reference to ghost at position addr
828 :			\G this is used to eleminate a :dovar refence after making a DOES>
829 :			dup >magic @ <fwd> <> IF 2drop EXIT THEN
830 :			swap >r >link
831 :			BEGIN dup @ dup ( addr last this )
832 :			WHILE dup >taddr @ r@ =
833 :			IF @ over !
834 :			ELSE nip THEN
835 :			REPEAT rdrop 2drop
836 :	jwilke	1.53	;
837 :	anton	1.48
838 :	jwilke	1.52	Defer resolve-warning
839 :	anton	1.1
840 :	jwilke	1.52	: reswarn-test ( ghost res-struct -- ghost res-struct )
841 :			over cr ." Resolving " >ghostname type dup ." in " >ghost @ >ghostname type ;
842 :	anton	1.1
843 :	jwilke	1.52	: reswarn-forward ( ghost res-struct -- ghost res-struct )
844 :			over warnhead >ghostname type dup ." is referenced in "
845 :			>ghost @ >ghostname type ;
846 :	anton	1.1
847 :	jwilke	1.52	\ ' reswarn-test IS resolve-warning
848 :
849 :	anton	1.1	\ resolve 14oct92py
850 :
851 :	pazsan	1.54	: resolve-loop ( ghost resolve-list tcfa -- )
852 :			>r
853 :			BEGIN dup WHILE
854 :			\ dup >tag @ 2 = IF reswarn-forward THEN
855 :			resolve-warning
856 :			r@ over >taddr @
857 :			2 pick >tag @
858 :			CASE 0 OF colon-resolve ENDOF
859 :			1 OF addr-resolve ENDOF
860 :			2 OF doer-resolve ENDOF
861 :			ENDCASE
862 :			@ \ next list element
863 :			REPEAT 2drop rdrop
864 :			;
865 :	jwilke	1.52
866 :			\ : resolve-loop ( ghost tcfa -- ghost tcfa )
867 :			\ >r dup >link @
868 :			\ BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
869 :	anton	1.1
870 :			\ exists 9may93jaw
871 :
872 :	jwilke	1.52	Variable TWarnings
873 :			TWarnings on
874 :			Variable Exists-Warnings
875 :			Exists-Warnings on
876 :
877 :	anton	1.1	: exists ( ghost tcfa -- )
878 :			over GhostNames
879 :			BEGIN @ dup
880 :			WHILE 2dup cell+ @ =
881 :			UNTIL
882 :	jwilke	1.52	2 cells + count
883 :			TWarnings @ Exists-Warnings @ and
884 :			IF warnhead type ." exists"
885 :			ELSE 2drop THEN
886 :			drop swap >link !
887 :	pazsan	1.24	ELSE true abort" CROSS: Ghostnames inconsistent "
888 :	anton	1.1	THEN ;
889 :
890 :			: resolve ( ghost tcfa -- )
891 :	pazsan	1.54	\G resolve referencies to ghost with tcfa
892 :			\ is ghost resolved?, second resolve means another definition with the
893 :			\ same name
894 :			over forward? 0= IF exists EXIT THEN
895 :			\ get linked-list
896 :			swap >r r@ >link @ swap \ ( list tcfa R: ghost )
897 :			\ mark ghost as resolved
898 :			dup r@ >link ! <res> r@ >magic !
899 :			\ loop through forward referencies
900 :			r> -rot
901 :			comp-state @ >r Resolving comp-state !
902 :			resolve-loop
903 :			r> comp-state !
904 :
905 :			['] noop IS resolve-warning
906 :	jwilke	1.52	;
907 :	anton	1.1
908 :			\ gexecute ghost, 01nov92py
909 :
910 :	jwilke	1.52	: is-forward ( ghost -- )
911 :	pazsan	1.54	colonmark, 0 (refered) ; \ compile space for call
912 :	jwilke	1.52
913 :			: is-resolved ( ghost -- )
914 :			>link @ colon, ; \ compile-call
915 :
916 :			: gexecute ( ghost -- )
917 :			dup @ <fwd> = IF is-forward ELSE is-resolved THEN ;
918 :
919 :			: addr, ( ghost -- )
920 :			dup @ <fwd> = IF 1 refered 0 T a, H ELSE >link @ T a, H THEN ;
921 :
922 :			\ !! : ghost, ghost gexecute ;
923 :	anton	1.1
924 :			\ .unresolved 11may93jaw
925 :
926 :			variable ResolveFlag
927 :
928 :			\ ?touched 11may93jaw
929 :
930 :	jwilke	1.52	: ?touched ( ghost -- flag ) dup forward? swap >link @
931 :	anton	1.1	0 <> and ;
932 :
933 :	jwilke	1.53	: .forwarddefs ( ghost -- )
934 :			." appeared in:"
935 :			>link
936 :			BEGIN @ dup
937 :			WHILE cr 5 spaces
938 :			dup >ghost @ >ghostname type
939 :			." file " dup >file @ ?dup IF count type ELSE ." CON" THEN
940 :			." line " dup >line @ .dec
941 :			REPEAT
942 :			drop ;
943 :
944 :	anton	1.1	: ?resolved ( ghostname -- )
945 :			dup cell+ @ ?touched
946 :	jwilke	1.53	IF dup
947 :			cell+ cell+ count cr type ResolveFlag on
948 :			cell+ @ .forwarddefs
949 :			ELSE drop
950 :			THEN ;
951 :	anton	1.1
952 :			>MINIMAL
953 :			: .unresolved ( -- )
954 :			ResolveFlag off cr ." Unresolved: "
955 :			Ghostnames
956 :			BEGIN @ dup
957 :			WHILE dup ?resolved
958 :	anton	1.10	REPEAT drop ResolveFlag @
959 :			IF
960 :	anton	1.48	-1 abort" Unresolved words!"
961 :	anton	1.10	ELSE
962 :			." Nothing!"
963 :			THEN
964 :			cr ;
965 :	anton	1.1
966 :	jwilke	1.52	: .stats
967 :			base @ >r decimal
968 :			cr ." named Headers: " headers-named @ .
969 :			r> base ! ;
970 :
971 :	anton	1.1	>CROSS
972 :			\ Header states 12dec92py
973 :
974 :			: flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
975 :
976 :			VARIABLE ^imm
977 :
978 :			>TARGET
979 :	anton	1.36	: immediate 40 flag!
980 :	pazsan	1.18	^imm @ @ dup <imm> = IF drop EXIT THEN
981 :	anton	1.1	<res> <> ABORT" CROSS: Cannot immediate a unresolved word"
982 :			<imm> ^imm @ ! ;
983 :	anton	1.36	: restrict 20 flag! ;
984 :	jwilke	1.52
985 :	pazsan	1.54	: isdoer
986 :			\G define a forth word as doer, this makes obviously only sence on
987 :			\G forth processors such as the PSC1000
988 :			<do:> last-header-ghost @ >magic ! ;
989 :	anton	1.1	>CROSS
990 :
991 :			\ ALIAS2 ansforth conform alias 9may93jaw
992 :
993 :			: ALIAS2 create here 0 , DOES> @ execute ;
994 :			\ usage:
995 :	pazsan	1.18	\ ' <name> alias2 bla !
996 :	anton	1.1
997 :			\ Target Header Creation 01nov92py
998 :
999 :	jwilke	1.52	>TARGET
1000 :	anton	1.1	: string, ( addr count -- )
1001 :	pazsan	1.28	dup T c, H bounds ?DO I c@ T c, H LOOP ;
1002 :	jwilke	1.52	: name, ( "name" -- ) bl word count T string, cfalign H ;
1003 :	anton	1.1	: view, ( -- ) ( dummy ) ;
1004 :	jwilke	1.52	>CROSS
1005 :	anton	1.1
1006 :	pazsan	1.25	\ Target Document Creation (goes to crossdoc.fd) 05jul95py
1007 :
1008 :	pazsan	1.55	s" ./doc/crossdoc.fd" r/w create-file throw value doc-file-id
1009 :	pazsan	1.25	\ contains the file-id of the documentation file
1010 :
1011 :	pazsan	1.40	: T-\G ( -- )
1012 :	pazsan	1.25	source >in @ /string doc-file-id write-line throw
1013 :	pazsan	1.40	postpone \ ;
1014 :	pazsan	1.25
1015 :	pazsan	1.39	Variable to-doc to-doc on
1016 :	pazsan	1.25
1017 :			: cross-doc-entry ( -- )
1018 :			to-doc @ tlast @ 0<> and \ not an anonymous (i.e. noname) header
1019 :			IF
1020 :			s" " doc-file-id write-line throw
1021 :			s" make-doc " doc-file-id write-file throw
1022 :			tlast @ >image count $1F and doc-file-id write-file throw
1023 :			>in @
1024 :			[char] ( parse 2drop
1025 :			[char] ) parse doc-file-id write-file throw
1026 :			s" )" doc-file-id write-file throw
1027 :			[char] \ parse 2drop
1028 :	pazsan	1.40	T-\G
1029 :	pazsan	1.25	>in !
1030 :	pazsan	1.39	THEN ;
1031 :	pazsan	1.25
1032 :	pazsan	1.28	\ Target TAGS creation
1033 :
1034 :	pazsan	1.39	s" kernel.TAGS" r/w create-file throw value tag-file-id
1035 :	pazsan	1.28	\ contains the file-id of the tags file
1036 :
1037 :			Create tag-beg 2 c, 7F c, bl c,
1038 :			Create tag-end 2 c, bl c, 01 c,
1039 :			Create tag-bof 1 c, 0C c,
1040 :
1041 :			2variable last-loadfilename 0 0 last-loadfilename 2!
1042 :
1043 :			: put-load-file-name ( -- )
1044 :			loadfilename 2@ last-loadfilename 2@ d<>
1045 :			IF
1046 :			tag-bof count tag-file-id write-line throw
1047 :	anton	1.31	sourcefilename 2dup
1048 :	pazsan	1.28	tag-file-id write-file throw
1049 :			last-loadfilename 2!
1050 :			s" ,0" tag-file-id write-line throw
1051 :			THEN ;
1052 :
1053 :			: cross-tag-entry ( -- )
1054 :			tlast @ 0<> \ not an anonymous (i.e. noname) header
1055 :			IF
1056 :			put-load-file-name
1057 :			source >in @ min tag-file-id write-file throw
1058 :			tag-beg count tag-file-id write-file throw
1059 :			tlast @ >image count $1F and tag-file-id write-file throw
1060 :			tag-end count tag-file-id write-file throw
1061 :	anton	1.31	base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw
1062 :	pazsan	1.28	\ >in @ 0 <# #s [char] , hold #> tag-file-id write-line throw
1063 :			s" ,0" tag-file-id write-line throw
1064 :			base !
1065 :			THEN ;
1066 :
1067 :	pazsan	1.43	\ Check for words
1068 :
1069 :			Defer skip? ' false IS skip?
1070 :
1071 :			: defined? ( -- flag ) \ name
1072 :	jwilke	1.52	ghost forward? 0= ;
1073 :	pazsan	1.43
1074 :			: needed? ( -- flag ) \ name
1075 :	anton	1.48	\G returns a false flag when
1076 :			\G a word is not defined
1077 :			\G a forward reference exists
1078 :			\G so the definition is not skipped!
1079 :			bl word gfind
1080 :	jwilke	1.52	IF dup forward?
1081 :	anton	1.48	nip
1082 :			0=
1083 :			ELSE drop true THEN ;
1084 :	pazsan	1.43
1085 :	pazsan	1.44	: doer? ( -- flag ) \ name
1086 :			ghost >magic @ <do:> = ;
1087 :
1088 :	pazsan	1.43	: skip-defs ( -- )
1089 :			BEGIN refill WHILE source -trailing nip 0= UNTIL THEN ;
1090 :
1091 :	pazsan	1.28	\ Target header creation
1092 :
1093 :	pazsan	1.54	Variable CreateFlag
1094 :			CreateFlag off
1095 :	jwilke	1.52
1096 :	pazsan	1.54	Variable NoHeaderFlag
1097 :			NoHeaderFlag off
1098 :	anton	1.1
1099 :	pazsan	1.54	: 0.r ( n1 n2 -- )
1100 :			base @ >r hex
1101 :			0 swap <# 0 ?DO # LOOP #> type
1102 :			r> base ! ;
1103 :	jwilke	1.52	: .sym
1104 :			bounds
1105 :			DO I c@ dup
1106 :			CASE '/ OF drop ." \/" ENDOF
1107 :			'\ OF drop ." \\" ENDOF
1108 :			dup OF emit ENDOF
1109 :			ENDCASE
1110 :	pazsan	1.54	LOOP ;
1111 :	jwilke	1.52
1112 :	pazsan	1.43	: (Theader ( "name" -- ghost )
1113 :	pazsan	1.54	\ >in @ bl word count type 2 spaces >in !
1114 :			\ wordheaders will always be compiled to rom
1115 :			switchrom
1116 :			\ build header in target
1117 :			NoHeaderFlag @
1118 :			IF NoHeaderFlag off
1119 :			ELSE
1120 :			T align H view,
1121 :	pazsan	1.59	tlast @ dup 0> IF T 1 cells - H THEN T A, H there tlast !
1122 :	pazsan	1.54	1 headers-named +! \ Statistic
1123 :			>in @ T name, H >in !
1124 :			THEN
1125 :			T cfalign here H tlastcfa !
1126 :			\ Symbol table
1127 :			\ >in @ cr ." sym:s/CFA=" there 4 0.r ." /" bl word count .sym ." /g" cr >in !
1128 :			CreateFlag @
1129 :			IF
1130 :			>in @ alias2 swap >in ! \ create alias in target
1131 :			>in @ ghost swap >in !
1132 :			swap also ghosts ' previous swap ! \ tick ghost and store in alias
1133 :			CreateFlag off
1134 :			ELSE ghost
1135 :			THEN
1136 :			dup Last-Header-Ghost !
1137 :			dup >magic ^imm ! \ a pointer for immediate
1138 :			Already @
1139 :			IF dup >end tdoes !
1140 :			ELSE 0 tdoes !
1141 :			THEN
1142 :			80 flag!
1143 :			cross-doc-entry cross-tag-entry ;
1144 :	anton	1.1
1145 :			VARIABLE ;Resolve 1 cells allot
1146 :	jwilke	1.52	\ this is the resolver information from ":"
1147 :			\ resolving is done by ";"
1148 :	anton	1.1
1149 :	pazsan	1.11	: Theader ( "name" -- ghost )
1150 :			(THeader dup there resolve 0 ;Resolve ! ;
1151 :	anton	1.1
1152 :			>TARGET
1153 :			: Alias ( cfa -- ) \ name
1154 :	pazsan	1.43	>in @ skip? IF 2drop EXIT THEN >in !
1155 :	jwilke	1.53	dup 0< s" prims" T $has? H 0= and
1156 :	pazsan	1.43	IF
1157 :	jwilke	1.53	.sourcepos ." needs prim: " >in @ bl word count type >in ! cr
1158 :	pazsan	1.43	THEN
1159 :			(THeader over resolve T A, H 80 flag! ;
1160 :	pazsan	1.42	: Alias: ( cfa -- ) \ name
1161 :	pazsan	1.43	>in @ skip? IF 2drop EXIT THEN >in !
1162 :	jwilke	1.53	dup 0< s" prims" T $has? H 0= and
1163 :	pazsan	1.43	IF
1164 :	jwilke	1.53	.sourcepos ." needs doer: " >in @ bl word count type >in ! cr
1165 :	pazsan	1.43	THEN
1166 :			ghost tuck swap resolve <do:> swap >magic ! ;
1167 :	anton	1.1	>CROSS
1168 :
1169 :			\ Conditionals and Comments 11may93jaw
1170 :
1171 :			: ;Cond
1172 :			postpone ;
1173 :			swap ! ; immediate
1174 :
1175 :			: Cond: ( -- ) \ name {code } ;
1176 :			atonce on
1177 :			ghost
1178 :			>exec
1179 :			:NONAME ;
1180 :
1181 :			: restrict? ( -- )
1182 :			\ aborts on interprete state - ae
1183 :			state @ 0= ABORT" CROSS: Restricted" ;
1184 :
1185 :			: Comment ( -- )
1186 :			>in @ atonce on ghost swap >in ! ' swap >exec ! ;
1187 :
1188 :			Comment ( Comment \
1189 :
1190 :			\ compile 10may93jaw
1191 :
1192 :			: compile ( -- ) \ name
1193 :			restrict?
1194 :	pazsan	1.13	bl word gfind dup 0= ABORT" CROSS: Can't compile "
1195 :	anton	1.1	0> ( immediate? )
1196 :			IF >exec @ compile,
1197 :			ELSE postpone literal postpone gexecute THEN ;
1198 :			immediate
1199 :
1200 :	jwilke	1.52	: [G']
1201 :			\G ticks a ghost and returns its address
1202 :			bl word gfind 0= ABORT" CROSS: Ghost don't exists"
1203 :			state @
1204 :			IF postpone literal
1205 :			THEN ; immediate
1206 :
1207 :			: ghost>cfa
1208 :			dup forward? ABORT" CROSS: forward " >link @ ;
1209 :
1210 :			>TARGET
1211 :
1212 :			: ' ( -- cfa )
1213 :			\ returns the target-cfa of a ghost
1214 :			bl word gfind 0= ABORT" CROSS: Ghost don't exists"
1215 :			ghost>cfa ;
1216 :
1217 :			Cond: ['] T ' H alit, ;Cond
1218 :
1219 :			>CROSS
1220 :
1221 :			: [T']
1222 :			\ returns the target-cfa of a ghost, or compiles it as literal
1223 :			postpone [G'] state @ IF postpone ghost>cfa ELSE ghost>cfa THEN ; immediate
1224 :	pazsan	1.42
1225 :	jwilke	1.52	\ \ threading modell 13dec92py
1226 :			\ modularized 14jun97jaw
1227 :
1228 :			: fillcfa ( usedcells -- )
1229 :	pazsan	1.59	T cells H xt>body swap - 0 ?DO 0 T c, tchar H +LOOP ;
1230 :	jwilke	1.52
1231 :			: (>body) ( cfa -- pfa ) xt>body + ; ' (>body) T IS >body H
1232 :
1233 :			: (doer,) ( ghost -- ) ]comp gexecute comp[ 1 fillcfa ; ' (doer,) IS doer,
1234 :
1235 :			: (docol,) ( -- ) [G'] :docol doer, ; ' (docol,) IS docol,
1236 :
1237 :			: (doprim,) ( -- )
1238 :			there xt>body + ca>native T a, H 1 fillcfa ; ' (doprim,) IS doprim,
1239 :
1240 :			: (doeshandler,) ( -- )
1241 :			T cfalign H compile :doesjump T 0 , H ; ' (doeshandler,) IS doeshandler,
1242 :
1243 :			: (dodoes,) ( does-action-ghost -- )
1244 :			]comp [G'] :dodoes gexecute comp[
1245 :			addr,
1246 :			T here H tcell - reloff 2 fillcfa ; ' (dodoes,) IS dodoes,
1247 :
1248 :			: (lit,) ( n -- ) compile lit T , H ; ' (lit,) IS lit,
1249 :
1250 :			: (alit,) ( n -- ) lit, T here cell - H relon ; ' (alit,) IS alit,
1251 :
1252 :			: (fini,) compile ;s ; ' (fini,) IS fini,
1253 :	pazsan	1.42
1254 :	pazsan	1.43	[IFUNDEF] (code)
1255 :			Defer (code)
1256 :			Defer (end-code)
1257 :			[THEN]
1258 :
1259 :	anton	1.1	>TARGET
1260 :	pazsan	1.43	: Code
1261 :	jwilke	1.52	defempty?
1262 :	anton	1.48	(THeader there resolve
1263 :	jwilke	1.53	[ T e? prims H 0= [IF] T e? ITC H [ELSE] true [THEN] ] [IF]
1264 :	jwilke	1.52	doprim,
1265 :	anton	1.48	[THEN]
1266 :			depth (code) ;
1267 :	pazsan	1.43
1268 :			: Code:
1269 :	jwilke	1.52	defempty?
1270 :	anton	1.48	ghost dup there ca>native resolve <do:> swap >magic !
1271 :	pazsan	1.43	depth (code) ;
1272 :
1273 :			: end-code
1274 :	jwilke	1.52	(end-code)
1275 :	pazsan	1.43	depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
1276 :			ELSE true ABORT" CROSS: Stack empty" THEN
1277 :	jwilke	1.52	;
1278 :	anton	1.14
1279 :	pazsan	1.57	( Cond ) : chars tchar * ; ( Cond )
1280 :	anton	1.1
1281 :			>CROSS
1282 :	jwilke	1.52
1283 :	anton	1.1	\ tLiteral 12dec92py
1284 :
1285 :			>TARGET
1286 :	pazsan	1.40	Cond: \G T-\G ;Cond
1287 :
1288 :	anton	1.1	Cond: Literal ( n -- ) restrict? lit, ;Cond
1289 :			Cond: ALiteral ( n -- ) restrict? alit, ;Cond
1290 :
1291 :			: Char ( "<char>" -- ) bl word char+ c@ ;
1292 :			Cond: [Char] ( "<char>" -- ) restrict? Char lit, ;Cond
1293 :
1294 :	pazsan	1.43	\ some special literals 27jan97jaw
1295 :
1296 :	jwilke	1.52	\ !! Known Bug: Special Literals and plug-ins work only correct
1297 :			\ on 16 and 32 Bit Targets and 32 Bit Hosts!
1298 :
1299 :	pazsan	1.43	Cond: MAXU
1300 :	jwilke	1.52	restrict?
1301 :			tcell 1 cells u>
1302 :			IF compile lit tcell 0 ?DO FF T c, H LOOP
1303 :			ELSE $ffffffff lit, THEN
1304 :			;Cond
1305 :	pazsan	1.43
1306 :			Cond: MINI
1307 :	jwilke	1.52	restrict?
1308 :			tcell 1 cells u>
1309 :			IF compile lit bigendian
1310 :			IF 80 T c, H tcell 1 ?DO 0 T c, H LOOP
1311 :			ELSE tcell 1 ?DO 0 T c, H LOOP 80 T c, H
1312 :			THEN
1313 :			ELSE tcell 2 = IF $8000 ELSE $80000000 THEN lit, THEN
1314 :			;Cond
1315 :	pazsan	1.43
1316 :			Cond: MAXI
1317 :	jwilke	1.52	restrict?
1318 :			tcell 1 cells u>
1319 :			IF compile lit bigendian
1320 :			IF 7F T c, H tcell 1 ?DO FF T c, H LOOP
1321 :			ELSE tcell 1 ?DO FF T c, H LOOP 7F T c, H
1322 :			THEN
1323 :			ELSE tcell 2 = IF $7fff ELSE $7fffffff THEN lit, THEN
1324 :	pazsan	1.43	;Cond
1325 :
1326 :	anton	1.1	>CROSS
1327 :			\ Target compiling loop 12dec92py
1328 :			\ ">tib trick thrown out 10may93jaw
1329 :			\ number? defined at the top 11may93jaw
1330 :
1331 :			\ compiled word might leave items on stack!
1332 :			: tcom ( in name -- )
1333 :			gfind ?dup IF 0> IF nip >exec @ execute
1334 :			ELSE nip gexecute THEN EXIT THEN
1335 :			number? dup IF 0> IF swap lit, THEN lit, drop
1336 :			ELSE 2drop >in !
1337 :			ghost gexecute THEN ;
1338 :
1339 :			>TARGET
1340 :			\ : ; DOES> 13dec92py
1341 :			\ ] 9may93py/jaw
1342 :
1343 :			: ] state on
1344 :	pazsan	1.54	Compiling comp-state !
1345 :	anton	1.1	BEGIN
1346 :	pazsan	1.13	BEGIN >in @ bl word
1347 :	anton	1.1	dup c@ 0= WHILE 2drop refill 0=
1348 :			ABORT" CROSS: End of file while target compiling"
1349 :			REPEAT
1350 :			tcom
1351 :			state @
1352 :			0=
1353 :			UNTIL ;
1354 :
1355 :			\ by the way: defining a second interpreter (a compiler-)loop
1356 :			\ is not allowed if a system should be ans conform
1357 :
1358 :			: : ( -- colon-sys ) \ Name
1359 :	jwilke	1.52	defempty?
1360 :			constflag off \ don't let this flag work over colon defs
1361 :			\ just to go sure nothing unwanted happens
1362 :	pazsan	1.43	>in @ skip? IF drop skip-defs EXIT THEN >in !
1363 :	anton	1.1	(THeader ;Resolve ! there ;Resolve cell+ !
1364 :	jwilke	1.52	docol, ]comp depth T ] H ;
1365 :	anton	1.1
1366 :	pazsan	1.37	: :noname ( -- colon-sys )
1367 :	jwilke	1.52	T cfalign H there docol, 0 ;Resolve ! depth T ] H ;
1368 :	pazsan	1.37
1369 :	pazsan	1.2	Cond: EXIT ( -- ) restrict? compile ;S ;Cond
1370 :	anton	1.6
1371 :			Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
1372 :	pazsan	1.2
1373 :	jwilke	1.52	>CROSS
1374 :			: LastXT ;Resolve @ 0= abort" CROSS: no definition for LastXT"
1375 :			;Resolve cell+ @ ;
1376 :
1377 :			>TARGET
1378 :
1379 :			Cond: recurse ( -- ) Last-Ghost @ gexecute ;Cond
1380 :
1381 :	anton	1.1	Cond: ; ( -- ) restrict?
1382 :			depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
1383 :			ELSE true ABORT" CROSS: Stack empty" THEN
1384 :	jwilke	1.52	fini,
1385 :			comp[
1386 :			state off
1387 :	anton	1.1	;Resolve @
1388 :			IF ;Resolve @ ;Resolve cell+ @ resolve THEN
1389 :	pazsan	1.54	Interpreting comp-state !
1390 :	anton	1.1	;Cond
1391 :	pazsan	1.54	Cond: [ restrict? state off Interpreting comp-state ! ;Cond
1392 :	anton	1.1
1393 :			>CROSS
1394 :	pazsan	1.54
1395 :			Create GhostDummy ghostheader
1396 :			<res> GhostDummy >magic !
1397 :
1398 :	jwilke	1.52	: !does ( does-action -- )
1399 :			\ !! zusammenziehen und dodoes, machen!
1400 :	pazsan	1.54	tlastcfa @ [G'] :dovar killref
1401 :			\ tlastcfa @ dup there >r tdp ! compile :dodoes r> tdp ! T cell+ ! H ;
1402 :	jwilke	1.52	\ !! geht so nicht, da dodoes, ghost will!
1403 :	pazsan	1.54	GhostDummy >link ! GhostDummy
1404 :			tlastcfa @ >tempdp dodoes, tempdp> ;
1405 :	anton	1.1
1406 :			>TARGET
1407 :			Cond: DOES> restrict?
1408 :	jwilke	1.52	compile (does>) doeshandler,
1409 :			\ resolve words made by builders
1410 :			tdoes @ ?dup IF @ T here H resolve THEN
1411 :	anton	1.1	;Cond
1412 :	jwilke	1.52	: DOES> switchrom doeshandler, T here H !does depth T ] H ;
1413 :	anton	1.1
1414 :			>CROSS
1415 :			\ Creation 01nov92py
1416 :
1417 :			\ Builder 11may93jaw
1418 :
1419 :	jwilke	1.52	: Builder ( Create-xt do:-xt "name" -- )
1420 :			\ builds up a builder in current vocabulary
1421 :			\ create-xt is executed when word is interpreted
1422 :			\ do:-xt is executet when the created word from builder is executed
1423 :			\ for do:-xt an additional entry after the normal ghost-enrys is used
1424 :
1425 :	anton	1.1	>in @ alias2 swap dup >in ! >r >r
1426 :	pazsan	1.54	Make-Ghost
1427 :			rot swap >exec dup @ ['] NoExec <>
1428 :			IF 2drop ELSE ! THEN
1429 :			,
1430 :	anton	1.1	r> r> >in !
1431 :	pazsan	1.11	also ghosts ' previous swap ! ;
1432 :			\ DOES> dup >exec @ execute ;
1433 :	anton	1.1
1434 :	jwilke	1.52	: gdoes, ( ghost -- )
1435 :			\ makes the codefield for a word that is built
1436 :			>end @ dup forward? 0=
1437 :			IF
1438 :	pazsan	1.42	dup >magic @ <do:> =
1439 :	pazsan	1.54	IF doer,
1440 :			ELSE dodoes,
1441 :			THEN
1442 :			EXIT
1443 :	jwilke	1.52	THEN
1444 :			\ compile :dodoes gexecute
1445 :			\ T here H tcell - reloff
1446 :	pazsan	1.54	2 refered
1447 :			0 fillcfa
1448 :			;
1449 :	anton	1.1
1450 :	jwilke	1.52	: TCreate ( <name> -- )
1451 :			executed-ghost @
1452 :	anton	1.1	CreateFlag on
1453 :	jwilke	1.52	create-forward-warn
1454 :			IF ['] reswarn-forward IS resolve-warning THEN
1455 :	pazsan	1.11	Theader >r dup gdoes,
1456 :	jwilke	1.52	\ stores execution symantic in the built word
1457 :			>end @ >exec @ r> >exec ! ;
1458 :
1459 :			: RTCreate ( <name> -- )
1460 :			\ creates a new word with code-field in ram
1461 :			executed-ghost @
1462 :			CreateFlag on
1463 :			create-forward-warn
1464 :			IF ['] reswarn-forward IS resolve-warning THEN
1465 :			\ make Alias
1466 :			(THeader there 0 T a, H 80 flag! ( S executed-ghost new-ghost )
1467 :			\ store poiter to code-field
1468 :			switchram T cfalign H
1469 :			there swap T ! H
1470 :			there tlastcfa !
1471 :			dup there resolve 0 ;Resolve !
1472 :			>r dup gdoes,
1473 :	pazsan	1.11	>end @ >exec @ r> >exec ! ;
1474 :	anton	1.1
1475 :			: Build: ( -- [xt] [colon-sys] )
1476 :	jwilke	1.52	:noname postpone TCreate ;
1477 :
1478 :			: BuildSmart: ( -- [xt] [colon-sys] )
1479 :			:noname
1480 :	jwilke	1.53	[ T has? rom H [IF] ]
1481 :	jwilke	1.52	postpone RTCreate
1482 :			[ [ELSE] ]
1483 :			postpone TCreate
1484 :			[ [THEN] ] ;
1485 :	anton	1.1
1486 :			: gdoes> ( ghost -- addr flag )
1487 :	jwilke	1.52	executed-ghost @
1488 :	anton	1.1	state @ IF gexecute true EXIT THEN
1489 :	jwilke	1.52	>link @ T >body H false ;
1490 :	anton	1.1
1491 :			\ DO: ;DO 11may93jaw
1492 :			\ changed to ?EXIT 10may93jaw
1493 :
1494 :			: DO: ( -- addr [xt] [colon-sys] )
1495 :			here ghostheader
1496 :	pazsan	1.11	:noname postpone gdoes> postpone ?EXIT ;
1497 :	anton	1.1
1498 :	pazsan	1.42	: by: ( -- addr [xt] [colon-sys] ) \ name
1499 :			ghost
1500 :			:noname postpone gdoes> postpone ?EXIT ;
1501 :
1502 :	jwilke	1.52	: ;DO ( addr [xt] [colon-sys] -- addr )
1503 :	anton	1.1	postpone ; ( S addr xt )
1504 :			over >exec ! ; immediate
1505 :
1506 :			: by ( -- addr ) \ Name
1507 :			ghost >end @ ;
1508 :
1509 :			>TARGET
1510 :			\ Variables and Constants 05dec92py
1511 :
1512 :	jwilke	1.52	Build: ( n -- ) ;
1513 :			by: :docon ( ghost -- n ) T @ H ;DO
1514 :			Builder (Constant)
1515 :
1516 :			Build: ( n -- ) T , H ;
1517 :			by (Constant)
1518 :			Builder Constant
1519 :
1520 :			Build: ( n -- ) T A, H ;
1521 :			by (Constant)
1522 :			Builder AConstant
1523 :
1524 :			Build: ( d -- ) T , , H ;
1525 :			DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO
1526 :			Builder 2Constant
1527 :
1528 :			BuildSmart: ;
1529 :	pazsan	1.42	by: :dovar ( ghost -- addr ) ;DO
1530 :	anton	1.1	Builder Create
1531 :
1532 :	jwilke	1.53	T has? rom H [IF]
1533 :	pazsan	1.54	Build: ( -- ) T here 0 , H switchram T align here swap ! 0 , H ( switchrom ) ;
1534 :	jwilke	1.52	by (Constant)
1535 :			Builder Variable
1536 :			[ELSE]
1537 :	anton	1.1	Build: T 0 , H ;
1538 :			by Create
1539 :			Builder Variable
1540 :	jwilke	1.52	[THEN]
1541 :	anton	1.1
1542 :	jwilke	1.53	T has? rom H [IF]
1543 :	pazsan	1.54	Build: ( -- ) T here 0 , H switchram T align here swap ! 0 , 0 , H ( switchrom ) ;
1544 :			by (Constant)
1545 :			Builder 2Variable
1546 :			[ELSE]
1547 :			Build: T 0 , 0 , H ;
1548 :			by Create
1549 :			Builder 2Variable
1550 :			[THEN]
1551 :
1552 :			T has? rom H [IF]
1553 :			Build: ( -- ) T here 0 , H switchram T align here swap ! 0 , H ( switchrom ) ;
1554 :	jwilke	1.52	by (Constant)
1555 :			Builder AVariable
1556 :			[ELSE]
1557 :	anton	1.1	Build: T 0 A, H ;
1558 :			by Create
1559 :			Builder AVariable
1560 :	jwilke	1.52	[THEN]
1561 :	anton	1.1
1562 :	pazsan	1.3	\ User variables 04may94py
1563 :
1564 :			>CROSS
1565 :			Variable tup 0 tup !
1566 :			Variable tudp 0 tudp !
1567 :			: u, ( n -- udp )
1568 :			tup @ tudp @ + T ! H
1569 :	pazsan	1.19	tudp @ dup T cell+ H tudp ! ;
1570 :	pazsan	1.3	: au, ( n -- udp )
1571 :			tup @ tudp @ + T A! H
1572 :	pazsan	1.19	tudp @ dup T cell+ H tudp ! ;
1573 :	pazsan	1.3	>TARGET
1574 :
1575 :			Build: T 0 u, , H ;
1576 :	pazsan	1.42	by: :douser ( ghost -- up-addr ) T @ H tup @ + ;DO
1577 :	anton	1.1	Builder User
1578 :
1579 :	pazsan	1.3	Build: T 0 u, , 0 u, drop H ;
1580 :			by User
1581 :	anton	1.1	Builder 2User
1582 :
1583 :	pazsan	1.3	Build: T 0 au, , H ;
1584 :			by User
1585 :	anton	1.1	Builder AUser
1586 :
1587 :	jwilke	1.52	BuildSmart: T , H ;
1588 :	pazsan	1.44	by (Constant)
1589 :	anton	1.1	Builder Value
1590 :
1591 :	jwilke	1.52	BuildSmart: T A, H ;
1592 :	pazsan	1.44	by (Constant)
1593 :	pazsan	1.32	Builder AValue
1594 :
1595 :	jwilke	1.52	BuildSmart: ( -- ) [T'] noop T A, H ;
1596 :	pazsan	1.42	by: :dodefer ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1597 :	anton	1.1	Builder Defer
1598 :	pazsan	1.37
1599 :	jwilke	1.52	BuildSmart: ( inter comp -- ) swap T immediate A, A, H ;
1600 :	pazsan	1.37	DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1601 :	anton	1.38	Builder interpret/compile:
1602 :	pazsan	1.24
1603 :			\ Sturctures 23feb95py
1604 :
1605 :			>CROSS
1606 :			: nalign ( addr1 n -- addr2 )
1607 :			\ addr2 is the aligned version of addr1 wrt the alignment size n
1608 :			1- tuck + swap invert and ;
1609 :			>TARGET
1610 :
1611 :	pazsan	1.44	Build: ;
1612 :			by: :dofield T @ H + ;DO
1613 :			Builder (Field)
1614 :
1615 :	anton	1.51	Build: ( align1 offset1 align size "name" -- align2 offset2 )
1616 :			rot dup T , H ( align1 align size offset1 )
1617 :			+ >r nalign r> ;
1618 :	pazsan	1.44	by (Field)
1619 :	pazsan	1.24	Builder Field
1620 :
1621 :	anton	1.51	: struct T 1 chars 0 H ;
1622 :	pazsan	1.24	: end-struct T 2Constant H ;
1623 :
1624 :	jwilke	1.52	: cell% ( n -- size align )
1625 :	anton	1.51	T 1 cells H dup ;
1626 :	pazsan	1.24
1627 :			\ ' 2Constant Alias2 end-struct
1628 :			\ 0 1 T Chars H 2Constant struct
1629 :	anton	1.1
1630 :	jwilke	1.52	\ structural conditionals 17dec92py
1631 :
1632 :			>CROSS
1633 :			: ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
1634 :			: sys? ( sys -- sys ) dup 0= ?struc ;
1635 :			: >mark ( -- sys ) T here ( dup ." M" hex. ) 0 , H ;
1636 :
1637 :	pazsan	1.59	: branchoffset ( src dest -- ) - tchar / ;
1638 :	jwilke	1.52
1639 :			: >resolve ( sys -- ) T here ( dup ." >" hex. ) over branchoffset swap ! H ;
1640 :
1641 :			: <resolve ( sys -- ) T here ( dup ." <" hex. ) branchoffset , H ;
1642 :
1643 :	pazsan	1.54	:noname compile branch T here branchoffset , H ;
1644 :			IS branch, ( target-addr -- )
1645 :			:noname compile ?branch T here branchoffset , H ;
1646 :			IS ?branch, ( target-addr -- )
1647 :			:noname compile branch T here 0 , H ;
1648 :			IS branchmark, ( -- branchtoken )
1649 :			:noname compile ?branch T here 0 , H ;
1650 :			IS ?branchmark, ( -- branchtoken )
1651 :			:noname T here 0 , H ;
1652 :			IS ?domark, ( -- branchtoken )
1653 :			:noname dup T @ H ?struc T here over branchoffset swap ! H ;
1654 :			IS branchtoresolve, ( branchtoken -- )
1655 :			:noname branchto, T here H ;
1656 :			IS branchtomark, ( -- target-addr )
1657 :	jwilke	1.52
1658 :			>TARGET
1659 :
1660 :			\ Structural Conditionals 12dec92py
1661 :
1662 :			Cond: BUT restrict? sys? swap ;Cond
1663 :			Cond: YET restrict? sys? dup ;Cond
1664 :
1665 :	pazsan	1.54	0 [IF]
1666 :	jwilke	1.52	>CROSS
1667 :			Variable tleavings
1668 :			>TARGET
1669 :
1670 :			Cond: DONE ( addr -- ) restrict? tleavings @
1671 :			BEGIN 2dup u> 0= WHILE dup T @ H swap >resolve REPEAT
1672 :			tleavings ! drop ;Cond
1673 :
1674 :			>CROSS
1675 :	pazsan	1.54	: (leave) T here H tleavings @ T , H tleavings ! ;
1676 :	jwilke	1.52	>TARGET
1677 :
1678 :	pazsan	1.54	Cond: LEAVE restrict? compile branch (leave) ;Cond
1679 :			Cond: ?LEAVE restrict? compile 0= compile ?branch (leave) ;Cond
1680 :	jwilke	1.52
1681 :	jwilke	1.53	[ELSE]
1682 :			\ !! This is WIP
1683 :			\ The problem is (?DO)!
1684 :			\ perhaps we need a plug-in for (?DO)
1685 :
1686 :			>CROSS
1687 :			Variable tleavings 0 tleavings !
1688 :	pazsan	1.54	: (done) ( addr -- )
1689 :			tleavings @
1690 :			BEGIN dup
1691 :			WHILE
1692 :			>r dup r@ cell+ @ \ address of branch
1693 :			u> 0= \ lower than DO?
1694 :			WHILE
1695 :			r@ 2 cells + @ \ branch token
1696 :			branchtoresolve,
1697 :			r@ @ r> free throw
1698 :			REPEAT r> THEN
1699 :			tleavings ! drop ;
1700 :
1701 :	jwilke	1.53	>TARGET
1702 :
1703 :	pazsan	1.54	Cond: DONE ( addr -- ) restrict? (done) ;Cond
1704 :	jwilke	1.53
1705 :			>CROSS
1706 :	pazsan	1.54	: (leave) ( branchtoken -- )
1707 :	jwilke	1.53	3 cells allocate throw >r
1708 :			T here H r@ cell+ !
1709 :			r@ 2 cells + !
1710 :			tleavings @ r@ !
1711 :			r> tleavings ! ;
1712 :			>TARGET
1713 :
1714 :	pazsan	1.54	Cond: LEAVE restrict? branchmark, (leave) ;Cond
1715 :			Cond: ?LEAVE restrict? compile 0= ?branchmark, (leave) ;Cond
1716 :	jwilke	1.53
1717 :			[THEN]
1718 :
1719 :	pazsan	1.54	>CROSS
1720 :			\ !!JW ToDo : Move to general tools section
1721 :
1722 :			: to1 ( x1 x2 xn n -- addr )
1723 :			\G packs n stack elements in a allocated memory region
1724 :			dup dup 1+ cells allocate throw dup >r swap 1+
1725 :			0 DO tuck ! cell+ LOOP
1726 :			drop r> ;
1727 :			: 1to ( addr -- x1 x2 xn )
1728 :			\G unpacks the elements saved by to1
1729 :			dup @ swap over cells + swap
1730 :			0 DO dup @ swap 1 cells - LOOP
1731 :			free throw ;
1732 :
1733 :			: loop] branchto, dup <resolve tcell - (done) ;
1734 :
1735 :			: skiploop] ?dup IF branchto, branchtoresolve, THEN ;
1736 :
1737 :			>TARGET
1738 :
1739 :	jwilke	1.52	\ Structural Conditionals 12dec92py
1740 :
1741 :	jwilke	1.53	>TARGET
1742 :	jwilke	1.52	Cond: AHEAD restrict? branchmark, ;Cond
1743 :			Cond: IF restrict? ?branchmark, ;Cond
1744 :			Cond: THEN restrict? sys? branchto, branchtoresolve, ;Cond
1745 :			Cond: ELSE restrict? sys? compile AHEAD swap compile THEN ;Cond
1746 :
1747 :			Cond: BEGIN restrict? branchtomark, ;Cond
1748 :			Cond: WHILE restrict? sys? compile IF swap ;Cond
1749 :			Cond: AGAIN restrict? sys? branch, ;Cond
1750 :			Cond: UNTIL restrict? sys? ?branch, ;Cond
1751 :			Cond: REPEAT restrict? over 0= ?struc compile AGAIN compile THEN ;Cond
1752 :
1753 :			Cond: CASE restrict? 0 ;Cond
1754 :			Cond: OF restrict? 1+ >r compile over compile =
1755 :			compile IF compile drop r> ;Cond
1756 :	pazsan	1.45	Cond: ENDOF restrict? >r compile ELSE r> ;Cond
1757 :			Cond: ENDCASE restrict? compile drop 0 ?DO compile THEN LOOP ;Cond
1758 :	anton	1.1
1759 :			\ Structural Conditionals 12dec92py
1760 :
1761 :	pazsan	1.54	:noname
1762 :			0 compile (do)
1763 :			branchtomark, 2 to1 ;
1764 :			IS do, ( -- target-addr )
1765 :
1766 :			\ :noname
1767 :			\ compile 2dup compile = compile IF
1768 :			\ compile 2drop compile ELSE
1769 :			\ compile (do) branchtomark, 2 to1 ;
1770 :			\ IS ?do,
1771 :
1772 :			:noname
1773 :			0 compile (?do) ?domark, (leave)
1774 :			branchtomark, 2 to1 ;
1775 :			IS ?do, ( -- target-addr )
1776 :			:noname compile (for) branchtomark, ;
1777 :			IS for, ( -- target-addr )
1778 :			:noname 1to compile (loop) loop] compile unloop skiploop] ;
1779 :			IS loop, ( target-addr -- )
1780 :			:noname 1to compile (+loop) loop] compile unloop skiploop] ;
1781 :			IS +loop, ( target-addr -- )
1782 :			:noname compile (next) loop] compile unloop ;
1783 :			IS next, ( target-addr -- )
1784 :
1785 :			Cond: DO restrict? do, ;Cond
1786 :			Cond: ?DO restrict? ?do, ;Cond
1787 :			Cond: FOR restrict? for, ;Cond
1788 :
1789 :			Cond: LOOP restrict? sys? loop, ;Cond
1790 :			Cond: +LOOP restrict? sys? +loop, ;Cond
1791 :			Cond: NEXT restrict? sys? next, ;Cond
1792 :	jwilke	1.52
1793 :	anton	1.1	\ String words 23feb93py
1794 :
1795 :	jwilke	1.52	: ," [char] " parse T string, align H ;
1796 :	anton	1.1
1797 :			Cond: ." restrict? compile (.") T ," H ;Cond
1798 :			Cond: S" restrict? compile (S") T ," H ;Cond
1799 :			Cond: ABORT" restrict? compile (ABORT") T ," H ;Cond
1800 :
1801 :			Cond: IS T ' >body H compile ALiteral compile ! ;Cond
1802 :			: IS T ' >body ! H ;
1803 :	pazsan	1.9	Cond: TO T ' >body H compile ALiteral compile ! ;Cond
1804 :			: TO T ' >body ! H ;
1805 :	anton	1.1
1806 :	jwilke	1.52	Cond: defers T ' >body @ compile, H ;Cond
1807 :			: on T -1 swap ! H ;
1808 :			: off T 0 swap ! H ;
1809 :
1810 :	anton	1.1	\ LINKED ERR" ENV" 2ENV" 18may93jaw
1811 :
1812 :			\ linked list primitive
1813 :			: linked T here over @ A, swap ! H ;
1814 :	jwilke	1.52	: chained T linked A, H ;
1815 :	anton	1.1
1816 :			: err" s" ErrLink linked" evaluate T , H
1817 :	jwilke	1.52	[char] " parse T string, align H ;
1818 :	anton	1.1
1819 :			: env" [char] " parse s" EnvLink linked" evaluate
1820 :	jwilke	1.52	T string, align , H ;
1821 :	anton	1.1
1822 :			: 2env" [char] " parse s" EnvLink linked" evaluate
1823 :	jwilke	1.52	here >r T string, align , , H
1824 :	anton	1.1	r> dup T c@ H 80 and swap T c! H ;
1825 :
1826 :			\ compile must be last 22feb93py
1827 :
1828 :			Cond: compile ( -- ) restrict? \ name
1829 :	pazsan	1.13	bl word gfind dup 0= ABORT" CROSS: Can't compile"
1830 :	anton	1.1	0> IF gexecute
1831 :			ELSE dup >magic @ <imm> =
1832 :			IF gexecute
1833 :	pazsan	1.54	ELSE compile (compile) addr, THEN THEN ;Cond
1834 :	anton	1.1
1835 :			Cond: postpone ( -- ) restrict? \ name
1836 :	pazsan	1.13	bl word gfind dup 0= ABORT" CROSS: Can't compile"
1837 :	anton	1.1	0> IF gexecute
1838 :			ELSE dup >magic @ <imm> =
1839 :			IF gexecute
1840 :	pazsan	1.54	ELSE compile (compile) addr, THEN THEN ;Cond
1841 :
1842 :			\ \ minimal definitions
1843 :
1844 :	anton	1.1	>MINIMAL
1845 :			also minimal
1846 :			\ Usefull words 13feb93py
1847 :
1848 :			: KB 400 * ;
1849 :
1850 :	pazsan	1.54	\ \ [IF] [ELSE] [THEN] ... 14sep97jaw
1851 :
1852 :			\ it is useful to define our own structures and not to rely
1853 :			\ on the words in the compiler
1854 :			\ The words in the compiler might be defined with vocabularies
1855 :			\ this doesn't work with our self-made compile-loop
1856 :
1857 :			Create parsed 20 chars allot \ store word we parsed
1858 :
1859 :			: upcase
1860 :			parsed count bounds
1861 :			?DO I c@ toupper I c! LOOP ;
1862 :
1863 :			: [ELSE]
1864 :			1 BEGIN
1865 :			BEGIN bl word count dup WHILE
1866 :			comment? parsed place upcase parsed count
1867 :			2dup s" [IF]" compare 0= >r
1868 :			2dup s" [IFUNDEF]" compare 0= >r
1869 :			2dup s" [IFDEF]" compare 0= r> or r> or
1870 :			IF 2drop 1+
1871 :			ELSE 2dup s" [ELSE]" compare 0=
1872 :			IF 2drop 1- dup
1873 :			IF 1+
1874 :			THEN
1875 :			ELSE
1876 :			2dup s" [ENDIF]" compare 0= >r
1877 :			s" [THEN]" compare 0= r> or
1878 :			IF 1- THEN
1879 :			THEN
1880 :			THEN
1881 :			?dup 0= ?EXIT
1882 :			REPEAT
1883 :			2drop refill 0=
1884 :			UNTIL drop ; immediate
1885 :
1886 :			: [THEN] ( -- ) ; immediate
1887 :
1888 :			: [ENDIF] ( -- ) ; immediate
1889 :
1890 :			: [IF] ( flag -- )
1891 :			0= IF postpone [ELSE] THEN ; immediate
1892 :
1893 :			Cond: [IF] postpone [IF] ;Cond
1894 :			Cond: [THEN] postpone [THEN] ;Cond
1895 :			Cond: [ELSE] postpone [ELSE] ;Cond
1896 :
1897 :	anton	1.1	\ define new [IFDEF] and [IFUNDEF] 20may93jaw
1898 :
1899 :	pazsan	1.43	: defined? defined? ;
1900 :	pazsan	1.44	: needed? needed? ;
1901 :			: doer? doer? ;
1902 :	anton	1.1
1903 :	jwilke	1.52	\ we want to use IFDEF on compiler directives (e.g. E?) in the source, too
1904 :
1905 :			: directive?
1906 :			bl word count [ ' target >wordlist ] aliteral search-wordlist
1907 :			dup IF nip THEN ;
1908 :
1909 :			: [IFDEF] >in @ directive? swap >in !
1910 :			0= IF defined? ELSE name 2drop true THEN
1911 :			postpone [IF] ;
1912 :
1913 :	pazsan	1.43	: [IFUNDEF] defined? 0= postpone [IF] ;
1914 :	anton	1.1
1915 :	pazsan	1.54	Cond: [IFDEF] postpone [IFDEF] ;Cond
1916 :
1917 :			Cond: [IFUNDEF] postpone [IFUNDEF] ;Cond
1918 :
1919 :	anton	1.1	\ C: \- \+ Conditional Compiling 09jun93jaw
1920 :
1921 :	pazsan	1.43	: C: >in @ defined? 0=
1922 :	anton	1.1	IF >in ! T : H
1923 :			ELSE drop
1924 :			BEGIN bl word dup c@
1925 :			IF count comment? s" ;" compare 0= ?EXIT
1926 :			ELSE refill 0= ABORT" CROSS: Out of Input while C:"
1927 :			THEN
1928 :			AGAIN
1929 :			THEN ;
1930 :
1931 :			also minimal
1932 :
1933 :	jwilke	1.52	\G doesn't skip line when bit is set in debugmask
1934 :			: \D name evaluate debugmasksource @ and 0= IF postpone \ THEN ;
1935 :
1936 :	anton	1.48	\G interprets the line if word is not defined
1937 :	pazsan	1.43	: \- defined? IF postpone \ THEN ;
1938 :	anton	1.48
1939 :			\G interprets the line if word is defined
1940 :	pazsan	1.43	: \+ defined? 0= IF postpone \ THEN ;
1941 :	anton	1.1
1942 :	anton	1.48	Cond: \- \- ;Cond
1943 :			Cond: \+ \+ ;Cond
1944 :	jwilke	1.52	Cond: \D \D ;Cond
1945 :	anton	1.48
1946 :			: ?? bl word find IF execute ELSE drop 0 THEN ;
1947 :
1948 :			: needed:
1949 :			\G defines ghost for words that we want to be compiled
1950 :			BEGIN >in @ bl word c@ WHILE >in ! ghost drop REPEAT drop ;
1951 :
1952 :			previous
1953 :
1954 :	anton	1.1	\ save-cross 17mar93py
1955 :
1956 :	anton	1.48	>CROSS
1957 :	pazsan	1.62	Create magic s" Gforth2x" here over allot swap move
1958 :	pazsan	1.26
1959 :	anton	1.63	bigendian 1+ \ strangely, in magic big=0, little=1
1960 :			tcell 1 = 0 and or
1961 :	pazsan	1.62	tcell 2 = 2 and or
1962 :			tcell 4 = 4 and or
1963 :			tcell 8 = 6 and or
1964 :			magic 7 + c!
1965 :	pazsan	1.26
1966 :	anton	1.34	: save-cross ( "image-name" "binary-name" -- )
1967 :			bl parse ." Saving to " 2dup type cr
1968 :	anton	1.1	w/o bin create-file throw >r
1969 :	anton	1.48	TNIL IF
1970 :	pazsan	1.43	s" #! " r@ write-file throw
1971 :			bl parse r@ write-file throw
1972 :			s" -i" r@ write-file throw
1973 :			#lf r@ emit-file throw
1974 :			r@ dup file-position throw drop 8 mod 8 swap ( file-id limit index )
1975 :			?do
1976 :			bl over emit-file throw
1977 :			loop
1978 :			drop
1979 :			magic 8 r@ write-file throw \ write magic
1980 :			ELSE
1981 :			bl parse 2drop
1982 :			THEN
1983 :	jwilke	1.52	image @ there
1984 :			r@ write-file throw \ write image
1985 :	anton	1.48	TNIL IF
1986 :			bit$ @ there 1- tcell>bit rshift 1+
1987 :	pazsan	1.16	r@ write-file throw \ write tags
1988 :	pazsan	1.43	THEN
1989 :	anton	1.1	r> close-file throw ;
1990 :
1991 :	jwilke	1.52	: save-region ( addr len -- )
1992 :			bl parse w/o bin create-file throw >r
1993 :			swap image @ + swap r@ write-file throw
1994 :			r> close-file throw ;
1995 :
1996 :	anton	1.1	\ words that should be in minimal
1997 :	jwilke	1.52
1998 :			create s-buffer 50 chars allot
1999 :
2000 :	anton	1.48	>MINIMAL
2001 :			also minimal
2002 :	anton	1.1
2003 :	anton	1.48	bigendian Constant bigendian
2004 :	jwilke	1.52	: here there ;
2005 :	pazsan	1.54
2006 :			\ compiler directives
2007 :	jwilke	1.52	: >ram >ram ;
2008 :			: >rom >rom ;
2009 :			: >auto >auto ;
2010 :			: >tempdp >tempdp ;
2011 :			: tempdp> tempdp> ;
2012 :			: const constflag on ;
2013 :			: warnings name 3 = 0= twarnings ! drop ;
2014 :	anton	1.60	: \| ;
2015 :			\ : \| NoHeaderFlag on ; \ This is broken (damages the last word)
2016 :	jwilke	1.52
2017 :	anton	1.48	: save-cross save-cross ;
2018 :	jwilke	1.52	: save-region save-region ;
2019 :			: tdump swap >image swap dump ;
2020 :
2021 :	anton	1.48	also forth
2022 :	jwilke	1.52	[IFDEF] Label : Label defempty? Label ; [THEN]
2023 :			[IFDEF] start-macros : start-macros defempty? start-macros ; [THEN]
2024 :			[IFDEF] builttag : builttag builttag ; [THEN]
2025 :	anton	1.48	previous
2026 :
2027 :	jwilke	1.52	: s" [char] " parse s-buffer place s-buffer count ; \ for environment?
2028 :	pazsan	1.43	: + + ;
2029 :	jwilke	1.52	: 1+ 1 + ;
2030 :			: 2+ 2 + ;
2031 :	pazsan	1.43	: or or ;
2032 :			: 1- 1- ;
2033 :			: - - ;
2034 :	jwilke	1.52	: and and ;
2035 :			: or or ;
2036 :	pazsan	1.43	: 2* 2* ;
2037 :			: * * ;
2038 :			: / / ;
2039 :			: dup dup ;
2040 :			: over over ;
2041 :			: swap swap ;
2042 :			: rot rot ;
2043 :			: drop drop ;
2044 :			: = = ;
2045 :			: 0= 0= ;
2046 :			: lshift lshift ;
2047 :			: 2/ 2/ ;
2048 :	pazsan	1.19	: . . ;
2049 :	anton	1.1
2050 :	pazsan	1.43	: all-words ['] false IS skip? ;
2051 :			: needed-words ['] needed? IS skip? ;
2052 :			: undef-words ['] defined? IS skip? ;
2053 :	anton	1.1
2054 :	pazsan	1.40	: \ postpone \ ; immediate
2055 :	pazsan	1.47	: \G T-\G ; immediate
2056 :	pazsan	1.40	: ( postpone ( ; immediate
2057 :	anton	1.1	: include bl word count included ;
2058 :	jwilke	1.52	: require require ;
2059 :	anton	1.1	: .( [char] ) parse type ;
2060 :	jwilke	1.52	: ." [char] " parse type ;
2061 :	anton	1.1	: cr cr ;
2062 :
2063 :			: times 0 ?DO dup T c, H LOOP drop ; \ used for space table creation
2064 :			only forth also minimal definitions
2065 :
2066 :			\ cross-compiler words
2067 :
2068 :			: decimal decimal ;
2069 :			: hex hex ;
2070 :
2071 :	pazsan	1.3	: tudp T tudp H ;
2072 :	pazsan	1.39	: tup T tup H ;
2073 :
2074 :			: doc-off false T to-doc H ! ;
2075 :			: doc-on true T to-doc H ! ;
2076 :	jwilke	1.52	[IFDEF] dbg : dbg dbg ; [THEN]
2077 :	pazsan	1.39
2078 :			minimal
2079 :	anton	1.1
2080 :			\ for debugging...
2081 :			: order order ;
2082 :	jwilke	1.52	: hwords words ;
2083 :			: words also ghosts words previous ;
2084 :	anton	1.1	: .s .s ;
2085 :			: bye bye ;
2086 :
2087 :			\ turnkey direction
2088 :			: H forth ; immediate
2089 :			: T minimal ; immediate
2090 :			: G ghosts ; immediate
2091 :
2092 :			: turnkey 0 set-order also Target definitions
2093 :			also Minimal also ;
2094 :
2095 :			\ these ones are pefered:
2096 :
2097 :			: lock turnkey ;
2098 :			: unlock forth also cross ;
2099 :	jwilke	1.52
2100 :			: [[ also unlock ;
2101 :			: ]] previous previous ;
2102 :	anton	1.1
2103 :			unlock definitions also minimal
2104 :			: lock lock ;
2105 :			lock

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