Annotation of gforth/cross.fs, revision 1.43
1.1 anton 1: \ CROSS.FS The Cross-Compiler 06oct92py
2: \ Idea and implementation: Bernd Paysan (py)
1.30 anton 3:
4: \ Copyright (C) 1995 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.
1.1 anton 21:
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:
1.9 pazsan 40: \ include other.fs \ ansforth extentions for cross
1.1 anton 41:
1.23 pazsan 42: : string, ( c-addr u -- )
43: \ puts down string as cstring
44: dup c, here swap chars dup allot move ;
45: ' falign Alias cfalign
1.5 pazsan 46: : comment? ( c-addr u -- c-addr u )
47: 2dup s" (" compare 0=
48: IF postpone (
49: ELSE 2dup s" \" compare 0= IF postpone \ THEN
50: THEN ;
51:
1.1 anton 52: decimal
53:
54: \ Begin CROSS COMPILER:
55:
56: \ GhostNames 9may93jaw
57: \ second name source to search trough list
58:
59: VARIABLE GhostNames
60: 0 GhostNames !
61: : GhostName ( -- addr )
1.22 anton 62: here GhostNames @ , GhostNames ! here 0 ,
63: bl word count
64: \ 2dup type space
65: string, cfalign ;
1.1 anton 66:
67: hex
68:
69:
70: Vocabulary Cross
71: Vocabulary Target
72: Vocabulary Ghosts
73: VOCABULARY Minimal
74: only Forth also Target also also
75: definitions Forth
76:
77: : T previous Cross also Target ; immediate
78: : G Ghosts ; immediate
79: : H previous Forth also Cross ; immediate
80:
81: forth definitions
82:
83: : T previous Cross also Target ; immediate
84: : G Ghosts ; immediate
85:
86: : >cross also Cross definitions previous ;
87: : >target also Target definitions previous ;
88: : >minimal also Minimal definitions previous ;
89:
90: H
91:
92: >CROSS
93:
1.43 ! pazsan 94: \ Parameter for target systems 06oct92py
! 95:
! 96: mach-file count included
! 97:
! 98: also Forth definitions
! 99:
! 100: [IFDEF] asm-include asm-include [THEN]
! 101:
! 102: previous
! 103:
! 104: >CROSS
! 105:
1.1 anton 106: \ Variables 06oct92py
107:
108: Variable image
109: Variable tlast NIL tlast ! \ Last name field
110: Variable tlastcfa \ Last code field
111: Variable tdoes \ Resolve does> calls
112: Variable bit$
113: Variable tdp
114: : there tdp @ ;
115:
1.19 pazsan 116: \ Create additional parameters 19jan95py
117:
118: T
119: cell Constant tcell
120: cell<< Constant tcell<<
121: cell>bit Constant tcell>bit
122: bits/byte Constant tbits/byte
123: float Constant tfloat
124: 1 bits/byte lshift Constant maxbyte
125: H
126:
1.1 anton 127: >TARGET
128:
129: \ Byte ordering and cell size 06oct92py
130:
1.19 pazsan 131: : cell+ tcell + ;
132: : cells tcell<< lshift ;
1.1 anton 133: : chars ;
1.19 pazsan 134: : floats tfloat * ;
1.6 anton 135:
1.1 anton 136: >CROSS
1.19 pazsan 137: : cell/ tcell<< rshift ;
1.1 anton 138: >TARGET
139: 20 CONSTANT bl
140: -1 Constant NIL
141:
142: >CROSS
143:
1.20 pazsan 144: bigendian
145: [IF]
146: : T! ( n addr -- ) >r s>d r> tcell bounds swap 1-
147: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
148: : T@ ( addr -- n ) >r 0 0 r> tcell bounds
149: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ;
1.19 pazsan 150: [ELSE]
1.20 pazsan 151: : T! ( n addr -- ) >r s>d r> tcell bounds
152: DO maxbyte ud/mod rot I c! LOOP 2drop ;
153: : T@ ( addr -- n ) >r 0 0 r> tcell bounds swap 1-
154: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ;
1.1 anton 155: [THEN]
156:
157: \ Memory initialisation 05dec92py
158: \ Fixed bug in else part 11may93jaw
159:
160: [IFDEF] Memory \ Memory is a bigFORTH feature
1.5 pazsan 161: also Memory
1.1 anton 162: : initmem ( var len -- )
163: 2dup swap handle! >r @ r> erase ;
1.5 pazsan 164: toss
1.1 anton 165: [ELSE]
166: : initmem ( var len -- )
167: tuck allocate abort" CROSS: No memory for target"
168: ( len var adr ) dup rot !
169: ( len adr ) swap erase ;
170: [THEN]
171:
172: \ MakeKernal 12dec92py
173:
174: >MINIMAL
1.39 pazsan 175: : makekernel ( targetsize -- targetsize )
1.1 anton 176: bit$ over 1- cell>bit rshift 1+ initmem
177: image over initmem tdp off ;
178:
179: >CROSS
180: \ Bit string manipulation 06oct92py
181: \ 9may93jaw
182: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
183: : bits ( n -- n ) chars Bittable + c@ ;
184:
185: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
186: : +bit ( addr n -- ) >bit over c@ or swap c! ;
1.4 pazsan 187: : -bit ( addr n -- ) >bit invert over c@ and swap c! ;
1.1 anton 188: : relon ( taddr -- ) bit$ @ swap cell/ +bit ;
1.4 pazsan 189: : reloff ( taddr -- ) bit$ @ swap cell/ -bit ;
1.1 anton 190:
191: \ Target memory access 06oct92py
192:
193: : align+ ( taddr -- rest )
194: cell tuck 1- and - [ cell 1- ] Literal and ;
1.22 anton 195: : cfalign+ ( taddr -- rest )
1.39 pazsan 196: \ see kernel.fs:cfaligned
1.43 ! pazsan 197: /maxalign tuck 1- and - [ /maxalign 1- ] Literal and ;
1.1 anton 198:
199: >TARGET
200: : aligned ( taddr -- ta-addr ) dup align+ + ;
201: \ assumes cell alignment granularity (as GNU C)
202:
1.22 anton 203: : cfaligned ( taddr1 -- taddr2 )
1.39 pazsan 204: \ see kernel.fs
1.22 anton 205: dup cfalign+ + ;
206:
1.1 anton 207: >CROSS
208: : >image ( taddr -- absaddr ) image @ + ;
209: >TARGET
1.19 pazsan 210: : @ ( taddr -- w ) >image t@ ;
211: : ! ( w taddr -- ) >image t! ;
1.1 anton 212: : c@ ( taddr -- char ) >image c@ ;
213: : c! ( char taddr -- ) >image c! ;
1.7 anton 214: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
215: : 2! ( x1 x2 taddr -- ) T swap over ! cell+ ! H ;
1.1 anton 216:
217: \ Target compilation primitives 06oct92py
218: \ included A! 16may93jaw
219:
220: : here ( -- there ) there ;
221: : allot ( n -- ) tdp +! ;
222: : , ( w -- ) T here H cell T allot ! H ;
223: : c, ( char -- ) T here 1 allot c! H ;
224: : align ( -- ) T here H align+ 0 ?DO bl T c, H LOOP ;
1.22 anton 225: : cfalign ( -- )
226: T here H cfalign+ 0 ?DO bl T c, H LOOP ;
1.1 anton 227:
228: : A! dup relon T ! H ;
229: : A, ( w -- ) T here H relon T , H ;
230:
231: >CROSS
232:
233: \ threading modell 13dec92py
234:
235: >TARGET
236: : >body ( cfa -- pfa ) T cell+ cell+ H ;
237: >CROSS
238:
239: \ Ghost Builder 06oct92py
240:
241: \ <T T> new version with temp variable 10may93jaw
242:
243: VARIABLE VocTemp
244:
245: : <T get-current VocTemp ! also Ghosts definitions ;
246: : T> previous VocTemp @ set-current ;
247:
248: 4711 Constant <fwd> 4712 Constant <res>
1.42 pazsan 249: 4713 Constant <imm> 4714 Constant <do:>
1.1 anton 250:
251: \ iForth makes only immediate directly after create
252: \ make atonce trick! ?
253:
254: Variable atonce atonce off
255:
256: : NoExec true ABORT" CROSS: Don't execute ghost" ;
257:
258: : GhostHeader <fwd> , 0 , ['] NoExec , ;
259:
1.43 ! pazsan 260: : >magic ;
! 261: : >link cell+ ;
! 262: : >exec cell+ cell+ ;
1.1 anton 263: : >end 3 cells + ;
264:
1.11 pazsan 265: Variable last-ghost
1.1 anton 266: : Make-Ghost ( "name" -- ghost )
267: >in @ GhostName swap >in !
268: <T Create atonce @ IF immediate atonce off THEN
269: here tuck swap ! ghostheader T>
1.11 pazsan 270: DOES> dup last-ghost ! >exec @ execute ;
1.1 anton 271:
272: \ ghost words 14oct92py
273: \ changed: 10may93py/jaw
274:
275: : gfind ( string -- ghost true/1 / string false )
276: \ searches for string in word-list ghosts
1.5 pazsan 277: dup count [ ' ghosts >body ] ALiteral search-wordlist
1.38 anton 278: dup IF >r >body nip r> THEN ;
1.1 anton 279:
280: VARIABLE Already
281:
282: : ghost ( "name" -- ghost )
283: Already off
1.13 pazsan 284: >in @ bl word gfind IF Already on nip EXIT THEN
1.1 anton 285: drop >in ! Make-Ghost ;
286:
287: \ resolve 14oct92py
288:
289: : resolve-loop ( ghost tcfa -- ghost tcfa )
290: >r dup >link @
291: BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
292:
293: \ exists 9may93jaw
294:
295: : exists ( ghost tcfa -- )
296: over GhostNames
297: BEGIN @ dup
298: WHILE 2dup cell+ @ =
299: UNTIL
1.18 pazsan 300: 2 cells + count cr ." CROSS: Exists: " type 4 spaces drop
1.1 anton 301: swap cell+ !
1.24 pazsan 302: ELSE true abort" CROSS: Ghostnames inconsistent "
1.1 anton 303: THEN ;
304:
305: : resolve ( ghost tcfa -- )
306: over >magic @ <fwd> <> IF exists EXIT THEN
307: resolve-loop over >link ! <res> swap >magic ! ;
308:
309: \ gexecute ghost, 01nov92py
310:
311: : do-forward ( ghost -- )
312: >link dup @ there rot ! T A, H ;
313: : do-resolve ( ghost -- )
314: >link @ T A, H ;
315:
316: : gexecute ( ghost -- ) dup @
317: <fwd> = IF do-forward ELSE do-resolve THEN ;
318: : ghost, ghost gexecute ;
319:
320: \ .unresolved 11may93jaw
321:
322: variable ResolveFlag
323:
324: \ ?touched 11may93jaw
325:
326: : ?touched ( ghost -- flag ) dup >magic @ <fwd> = swap >link @
327: 0 <> and ;
328:
329: : ?resolved ( ghostname -- )
330: dup cell+ @ ?touched
331: IF cell+ cell+ count cr type ResolveFlag on ELSE drop THEN ;
332:
333: >MINIMAL
334: : .unresolved ( -- )
335: ResolveFlag off cr ." Unresolved: "
336: Ghostnames
337: BEGIN @ dup
338: WHILE dup ?resolved
1.10 anton 339: REPEAT drop ResolveFlag @
340: IF
1.11 pazsan 341: abort" Unresolved words!"
1.10 anton 342: ELSE
343: ." Nothing!"
344: THEN
345: cr ;
1.1 anton 346:
347: >CROSS
348: \ Header states 12dec92py
349:
350: : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
351:
352: VARIABLE ^imm
353:
354: >TARGET
1.36 anton 355: : immediate 40 flag!
1.18 pazsan 356: ^imm @ @ dup <imm> = IF drop EXIT THEN
1.1 anton 357: <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
358: <imm> ^imm @ ! ;
1.36 anton 359: : restrict 20 flag! ;
1.1 anton 360: >CROSS
361:
362: \ ALIAS2 ansforth conform alias 9may93jaw
363:
364: : ALIAS2 create here 0 , DOES> @ execute ;
365: \ usage:
1.18 pazsan 366: \ ' <name> alias2 bla !
1.1 anton 367:
368: \ Target Header Creation 01nov92py
369:
370: : string, ( addr count -- )
1.28 pazsan 371: dup T c, H bounds ?DO I c@ T c, H LOOP ;
1.22 anton 372: : name, ( "name" -- ) bl word count string, T cfalign H ;
1.1 anton 373: : view, ( -- ) ( dummy ) ;
374:
1.25 pazsan 375: \ Target Document Creation (goes to crossdoc.fd) 05jul95py
376:
377: s" crossdoc.fd" r/w create-file throw value doc-file-id
378: \ contains the file-id of the documentation file
379:
1.40 pazsan 380: : T-\G ( -- )
1.25 pazsan 381: source >in @ /string doc-file-id write-line throw
1.40 pazsan 382: postpone \ ;
1.25 pazsan 383:
1.39 pazsan 384: Variable to-doc to-doc on
1.25 pazsan 385:
386: : cross-doc-entry ( -- )
387: to-doc @ tlast @ 0<> and \ not an anonymous (i.e. noname) header
388: IF
389: s" " doc-file-id write-line throw
390: s" make-doc " doc-file-id write-file throw
391: tlast @ >image count $1F and doc-file-id write-file throw
392: >in @
393: [char] ( parse 2drop
394: [char] ) parse doc-file-id write-file throw
395: s" )" doc-file-id write-file throw
396: [char] \ parse 2drop
1.40 pazsan 397: T-\G
1.25 pazsan 398: >in !
1.39 pazsan 399: THEN ;
1.25 pazsan 400:
1.28 pazsan 401: \ Target TAGS creation
402:
1.39 pazsan 403: s" kernel.TAGS" r/w create-file throw value tag-file-id
1.28 pazsan 404: \ contains the file-id of the tags file
405:
406: Create tag-beg 2 c, 7F c, bl c,
407: Create tag-end 2 c, bl c, 01 c,
408: Create tag-bof 1 c, 0C c,
409:
410: 2variable last-loadfilename 0 0 last-loadfilename 2!
411:
412: : put-load-file-name ( -- )
413: loadfilename 2@ last-loadfilename 2@ d<>
414: IF
415: tag-bof count tag-file-id write-line throw
1.31 anton 416: sourcefilename 2dup
1.28 pazsan 417: tag-file-id write-file throw
418: last-loadfilename 2!
419: s" ,0" tag-file-id write-line throw
420: THEN ;
421:
422: : cross-tag-entry ( -- )
423: tlast @ 0<> \ not an anonymous (i.e. noname) header
424: IF
425: put-load-file-name
426: source >in @ min tag-file-id write-file throw
427: tag-beg count tag-file-id write-file throw
428: tlast @ >image count $1F and tag-file-id write-file throw
429: tag-end count tag-file-id write-file throw
1.31 anton 430: base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw
1.28 pazsan 431: \ >in @ 0 <# #s [char] , hold #> tag-file-id write-line throw
432: s" ,0" tag-file-id write-line throw
433: base !
434: THEN ;
435:
1.43 ! pazsan 436: \ Check for words
! 437:
! 438: Defer skip? ' false IS skip?
! 439:
! 440: : defined? ( -- flag ) \ name
! 441: ghost >magic @ <fwd> <> ;
! 442:
! 443: : needed? ( -- flag ) \ name
! 444: ghost dup >magic @ <fwd> =
! 445: IF >link @ 0<> ELSE drop false THEN ;
! 446:
! 447: : skip-defs ( -- )
! 448: BEGIN refill WHILE source -trailing nip 0= UNTIL THEN ;
! 449:
1.28 pazsan 450: \ Target header creation
451:
1.1 anton 452: VARIABLE CreateFlag CreateFlag off
453:
1.43 ! pazsan 454: : (Theader ( "name" -- ghost )
! 455: \ >in @ bl word count type 2 spaces >in !
! 456: T align H view,
1.1 anton 457: tlast @ dup 0> IF T 1 cells - THEN A, H there tlast !
458: >in @ name, >in ! T here H tlastcfa !
459: CreateFlag @ IF
1.18 pazsan 460: >in @ alias2 swap >in ! \ create alias in target
461: >in @ ghost swap >in !
462: swap also ghosts ' previous swap ! \ tick ghost and store in alias
463: CreateFlag off
1.1 anton 464: ELSE ghost THEN
465: dup >magic ^imm ! \ a pointer for immediate
466: Already @ IF dup >end tdoes !
467: ELSE 0 tdoes ! THEN
1.25 pazsan 468: 80 flag!
1.28 pazsan 469: cross-doc-entry cross-tag-entry ;
1.1 anton 470:
471: VARIABLE ;Resolve 1 cells allot
472:
1.11 pazsan 473: : Theader ( "name" -- ghost )
474: (THeader dup there resolve 0 ;Resolve ! ;
1.1 anton 475:
476: >TARGET
477: : Alias ( cfa -- ) \ name
1.43 ! pazsan 478: >in @ skip? IF 2drop EXIT THEN >in !
! 479: dup 0< has-prims 0= and
! 480: IF
! 481: ." needs prim: " >in @ bl word count type >in ! cr
! 482: THEN
! 483: (THeader over resolve T A, H 80 flag! ;
1.42 pazsan 484: : Alias: ( cfa -- ) \ name
1.43 ! pazsan 485: >in @ skip? IF 2drop EXIT THEN >in !
! 486: dup 0< has-prims 0= and
! 487: IF
! 488: ." needs doer: " >in @ bl word count type >in ! cr
! 489: THEN
! 490: ghost tuck swap resolve <do:> swap >magic ! ;
1.1 anton 491: >CROSS
492:
493: \ Conditionals and Comments 11may93jaw
494:
495: : ;Cond
496: postpone ;
497: swap ! ; immediate
498:
499: : Cond: ( -- ) \ name {code } ;
500: atonce on
501: ghost
502: >exec
503: :NONAME ;
504:
505: : restrict? ( -- )
506: \ aborts on interprete state - ae
507: state @ 0= ABORT" CROSS: Restricted" ;
508:
509: : Comment ( -- )
510: >in @ atonce on ghost swap >in ! ' swap >exec ! ;
511:
512: Comment ( Comment \
513:
514: \ Predefined ghosts 12dec92py
515:
516: ghost 0= drop
517: ghost branch ghost ?branch 2drop
518: ghost (do) ghost (?do) 2drop
519: ghost (for) drop
520: ghost (loop) ghost (+loop) 2drop
521: ghost (next) drop
1.2 pazsan 522: ghost unloop ghost ;S 2drop
1.1 anton 523: ghost lit ghost (compile) ghost ! 2drop drop
1.29 anton 524: ghost (does>) ghost noop 2drop
1.1 anton 525: ghost (.") ghost (S") ghost (ABORT") 2drop drop
1.41 pazsan 526: ghost ' drop
1.42 pazsan 527: ghost :docol ghost :doesjump ghost :dodoes 2drop drop
1.1 anton 528:
529: \ compile 10may93jaw
530:
531: : compile ( -- ) \ name
532: restrict?
1.13 pazsan 533: bl word gfind dup 0= ABORT" CROSS: Can't compile "
1.1 anton 534: 0> ( immediate? )
535: IF >exec @ compile,
536: ELSE postpone literal postpone gexecute THEN ;
537: immediate
538:
1.42 pazsan 539: \ generic threading modell
540: : docol, ( -- ) compile :docol T 0 , H ;
541:
542: : dodoes, ( -- ) compile :doesjump T 0 , H ;
543:
1.43 ! pazsan 544: [IFUNDEF] (code)
! 545: Defer (code)
! 546: Defer (end-code)
! 547: [THEN]
! 548:
1.1 anton 549: >TARGET
1.43 ! pazsan 550: : Code
! 551: (THeader there resolve
! 552: there 2 T cells H + T a, 0 , H
! 553: depth (code) ;
! 554:
! 555: : Code:
! 556: ghost dup there resolve <do:> swap >magic !
! 557: depth (code) ;
! 558:
! 559: : end-code
! 560: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
! 561: ELSE true ABORT" CROSS: Stack empty" THEN
! 562: (end-code) ;
! 563:
1.13 pazsan 564: : ' ( -- cfa ) bl word gfind 0= ABORT" CROSS: undefined "
1.1 anton 565: dup >magic @ <fwd> = ABORT" CROSS: forward " >link @ ;
566:
567: Cond: ['] compile lit ghost gexecute ;Cond
1.14 anton 568:
569: Cond: chars ;Cond
1.1 anton 570:
571: >CROSS
572: \ tLiteral 12dec92py
573:
574: : lit, ( n -- ) compile lit T , H ;
575: : alit, ( n -- ) compile lit T A, H ;
576:
577: >TARGET
1.40 pazsan 578: Cond: \G T-\G ;Cond
579:
1.1 anton 580: Cond: Literal ( n -- ) restrict? lit, ;Cond
581: Cond: ALiteral ( n -- ) restrict? alit, ;Cond
582:
583: : Char ( "<char>" -- ) bl word char+ c@ ;
584: Cond: [Char] ( "<char>" -- ) restrict? Char lit, ;Cond
585:
1.43 ! pazsan 586: \ some special literals 27jan97jaw
! 587:
! 588: Cond: MAXU
! 589: restrict? compile lit
! 590: tcell 0 ?DO FF T c, H LOOP ;Cond
! 591:
! 592: Cond: MINI
! 593: restrict? compile lit
! 594: bigendian IF
! 595: 80 T c, H tcell 1 ?DO 0 T c, H LOOP
! 596: ELSE
! 597: tcell 1 ?DO 0 T c, H LOOP 80 T c, H
! 598: THEN
! 599: ;Cond
! 600:
! 601: Cond: MAXI
! 602: restrict? compile lit
! 603: bigendian IF
! 604: 7F T c, H tcell 1 ?DO FF T c, H LOOP
! 605: ELSE
! 606: tcell 1 ?DO FF T c, H LOOP 7F T c, H
! 607: THEN
! 608: ;Cond
! 609:
1.1 anton 610: >CROSS
611: \ Target compiling loop 12dec92py
612: \ ">tib trick thrown out 10may93jaw
613: \ number? defined at the top 11may93jaw
614:
615: \ compiled word might leave items on stack!
616: : tcom ( in name -- )
617: gfind ?dup IF 0> IF nip >exec @ execute
618: ELSE nip gexecute THEN EXIT THEN
619: number? dup IF 0> IF swap lit, THEN lit, drop
620: ELSE 2drop >in !
621: ghost gexecute THEN ;
622:
623: >TARGET
624: \ : ; DOES> 13dec92py
625: \ ] 9may93py/jaw
626:
627: : ] state on
628: BEGIN
1.13 pazsan 629: BEGIN >in @ bl word
1.1 anton 630: dup c@ 0= WHILE 2drop refill 0=
631: ABORT" CROSS: End of file while target compiling"
632: REPEAT
633: tcom
634: state @
635: 0=
636: UNTIL ;
637:
638: \ by the way: defining a second interpreter (a compiler-)loop
639: \ is not allowed if a system should be ans conform
640:
641: : : ( -- colon-sys ) \ Name
1.43 ! pazsan 642: >in @ skip? IF drop skip-defs EXIT THEN >in !
1.1 anton 643: (THeader ;Resolve ! there ;Resolve cell+ !
644: docol, depth T ] H ;
645:
1.37 pazsan 646: : :noname ( -- colon-sys )
647: T align H there docol, depth T ] H ;
648:
1.2 pazsan 649: Cond: EXIT ( -- ) restrict? compile ;S ;Cond
1.6 anton 650:
651: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
1.2 pazsan 652:
1.1 anton 653: Cond: ; ( -- ) restrict?
654: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
655: ELSE true ABORT" CROSS: Stack empty" THEN
1.2 pazsan 656: compile ;S state off
1.1 anton 657: ;Resolve @
658: IF ;Resolve @ ;Resolve cell+ @ resolve THEN
659: ;Cond
660: Cond: [ restrict? state off ;Cond
661:
662: >CROSS
1.42 pazsan 663: : !does
664: tlastcfa @ dup there >r tdp ! compile :dodoes r> tdp ! T cell+ ! H ;
1.1 anton 665:
666: >TARGET
667: Cond: DOES> restrict?
1.29 anton 668: compile (does>) dodoes, tdoes @ ?dup IF @ T here H resolve THEN
1.1 anton 669: ;Cond
670: : DOES> dodoes, T here H !does depth T ] H ;
671:
672: >CROSS
673: \ Creation 01nov92py
674:
675: \ Builder 11may93jaw
676:
677: : Builder ( Create do: "name" -- )
678: >in @ alias2 swap dup >in ! >r >r
679: Make-Ghost rot swap >exec ! ,
680: r> r> >in !
1.11 pazsan 681: also ghosts ' previous swap ! ;
682: \ DOES> dup >exec @ execute ;
1.1 anton 683:
684: : gdoes, ( ghost -- ) >end @ dup >magic @ <fwd> <>
1.42 pazsan 685: IF
686: dup >magic @ <do:> =
687: IF gexecute T 0 , H EXIT THEN
688: THEN
689: compile :dodoes gexecute T here H cell - reloff ;
1.1 anton 690:
1.11 pazsan 691: : TCreate ( -- )
692: last-ghost @
1.1 anton 693: CreateFlag on
1.11 pazsan 694: Theader >r dup gdoes,
695: >end @ >exec @ r> >exec ! ;
1.1 anton 696:
697: : Build: ( -- [xt] [colon-sys] )
698: :noname postpone TCreate ;
699:
700: : gdoes> ( ghost -- addr flag )
1.11 pazsan 701: last-ghost @
1.1 anton 702: state @ IF gexecute true EXIT THEN
703: cell+ @ T >body H false ;
704:
705: \ DO: ;DO 11may93jaw
706: \ changed to ?EXIT 10may93jaw
707:
708: : DO: ( -- addr [xt] [colon-sys] )
709: here ghostheader
1.11 pazsan 710: :noname postpone gdoes> postpone ?EXIT ;
1.1 anton 711:
1.42 pazsan 712: : by: ( -- addr [xt] [colon-sys] ) \ name
713: ghost
714: :noname postpone gdoes> postpone ?EXIT ;
715:
1.1 anton 716: : ;DO ( addr [xt] [colon-sys] -- )
717: postpone ; ( S addr xt )
718: over >exec ! ; immediate
719:
720: : by ( -- addr ) \ Name
721: ghost >end @ ;
722:
723: >TARGET
724: \ Variables and Constants 05dec92py
725:
726: Build: ;
1.42 pazsan 727: by: :dovar ( ghost -- addr ) ;DO
1.1 anton 728: Builder Create
729:
730: Build: T 0 , H ;
731: by Create
732: Builder Variable
733:
734: Build: T 0 A, H ;
735: by Create
736: Builder AVariable
737:
1.3 pazsan 738: \ User variables 04may94py
739:
740: >CROSS
741: Variable tup 0 tup !
742: Variable tudp 0 tudp !
743: : u, ( n -- udp )
744: tup @ tudp @ + T ! H
1.19 pazsan 745: tudp @ dup T cell+ H tudp ! ;
1.3 pazsan 746: : au, ( n -- udp )
747: tup @ tudp @ + T A! H
1.19 pazsan 748: tudp @ dup T cell+ H tudp ! ;
1.3 pazsan 749: >TARGET
750:
751: Build: T 0 u, , H ;
1.42 pazsan 752: by: :douser ( ghost -- up-addr ) T @ H tup @ + ;DO
1.1 anton 753: Builder User
754:
1.3 pazsan 755: Build: T 0 u, , 0 u, drop H ;
756: by User
1.1 anton 757: Builder 2User
758:
1.3 pazsan 759: Build: T 0 au, , H ;
760: by User
1.1 anton 761: Builder AUser
762:
763: Build: ( n -- ) T , H ;
1.42 pazsan 764: by: :docon ( ghost -- n ) T @ H ;DO
1.1 anton 765: Builder Constant
766:
767: Build: ( n -- ) T A, H ;
768: by Constant
769: Builder AConstant
770:
1.24 pazsan 771: Build: ( d -- ) T , , H ;
772: DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO
773: Builder 2Constant
774:
1.1 anton 775: Build: T 0 , H ;
776: by Constant
777: Builder Value
778:
1.32 pazsan 779: Build: T 0 A, H ;
780: by Constant
781: Builder AValue
782:
1.1 anton 783: Build: ( -- ) compile noop ;
1.42 pazsan 784: by: :dodefer ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1.1 anton 785: Builder Defer
1.37 pazsan 786:
787: Build: ( inter comp -- ) swap T immediate A, A, H ;
788: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1.38 anton 789: Builder interpret/compile:
1.24 pazsan 790:
791: \ Sturctures 23feb95py
792:
793: >CROSS
794: : nalign ( addr1 n -- addr2 )
795: \ addr2 is the aligned version of addr1 wrt the alignment size n
796: 1- tuck + swap invert and ;
797: >TARGET
798:
799: Build: >r rot r@ nalign dup T , H ( align1 size offset )
800: + swap r> nalign ;
1.42 pazsan 801: by: :dofield T @ H + ;DO
1.24 pazsan 802: Builder Field
803:
804: : struct T 0 1 chars H ;
805: : end-struct T 2Constant H ;
806:
807: : cells: ( n -- size align )
808: T cells 1 cells H ;
809:
810: \ ' 2Constant Alias2 end-struct
811: \ 0 1 T Chars H 2Constant struct
1.1 anton 812:
813: \ structural conditionals 17dec92py
814:
815: >CROSS
816: : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
817: : sys? ( sys -- sys ) dup 0= ?struc ;
818: : >mark ( -- sys ) T here 0 , H ;
819: : >resolve ( sys -- ) T here over - swap ! H ;
820: : <resolve ( sys -- ) T here - , H ;
821: >TARGET
822:
823: \ Structural Conditionals 12dec92py
824:
825: Cond: BUT restrict? sys? swap ;Cond
826: Cond: YET restrict? sys? dup ;Cond
827:
828: >CROSS
829: Variable tleavings
830: >TARGET
831:
832: Cond: DONE ( addr -- ) restrict? tleavings @
833: BEGIN 2dup u> 0= WHILE dup T @ H swap >resolve REPEAT
834: tleavings ! drop ;Cond
835:
836: >CROSS
837: : (leave T here H tleavings @ T , H tleavings ! ;
838: >TARGET
839:
840: Cond: LEAVE restrict? compile branch (leave ;Cond
841: Cond: ?LEAVE restrict? compile 0= compile ?branch (leave ;Cond
842:
843: \ Structural Conditionals 12dec92py
844:
845: Cond: AHEAD restrict? compile branch >mark ;Cond
846: Cond: IF restrict? compile ?branch >mark ;Cond
847: Cond: THEN restrict? sys? dup T @ H ?struc >resolve ;Cond
848: Cond: ELSE restrict? sys? compile AHEAD swap compile THEN ;Cond
849:
850: Cond: BEGIN restrict? T here H ;Cond
851: Cond: WHILE restrict? sys? compile IF swap ;Cond
852: Cond: AGAIN restrict? sys? compile branch <resolve ;Cond
853: Cond: UNTIL restrict? sys? compile ?branch <resolve ;Cond
854: Cond: REPEAT restrict? over 0= ?struc compile AGAIN compile THEN ;Cond
855:
856: \ Structural Conditionals 12dec92py
857:
858: Cond: DO restrict? compile (do) T here H ;Cond
859: Cond: ?DO restrict? compile (?do) (leave T here H ;Cond
860: Cond: FOR restrict? compile (for) T here H ;Cond
861:
862: >CROSS
863: : loop] dup <resolve cell - compile DONE compile unloop ;
864: >TARGET
865:
866: Cond: LOOP restrict? sys? compile (loop) loop] ;Cond
867: Cond: +LOOP restrict? sys? compile (+loop) loop] ;Cond
868: Cond: NEXT restrict? sys? compile (next) loop] ;Cond
869:
870: \ String words 23feb93py
871:
872: : ," [char] " parse string, T align H ;
873:
874: Cond: ." restrict? compile (.") T ," H ;Cond
875: Cond: S" restrict? compile (S") T ," H ;Cond
876: Cond: ABORT" restrict? compile (ABORT") T ," H ;Cond
877:
878: Cond: IS T ' >body H compile ALiteral compile ! ;Cond
879: : IS T ' >body ! H ;
1.9 pazsan 880: Cond: TO T ' >body H compile ALiteral compile ! ;Cond
881: : TO T ' >body ! H ;
1.1 anton 882:
883: \ LINKED ERR" ENV" 2ENV" 18may93jaw
884:
885: \ linked list primitive
886: : linked T here over @ A, swap ! H ;
887:
888: : err" s" ErrLink linked" evaluate T , H
889: [char] " parse string, T align H ;
890:
891: : env" [char] " parse s" EnvLink linked" evaluate
892: string, T align , H ;
893:
894: : 2env" [char] " parse s" EnvLink linked" evaluate
895: here >r string, T align , , H
896: r> dup T c@ H 80 and swap T c! H ;
897:
898: \ compile must be last 22feb93py
899:
900: Cond: compile ( -- ) restrict? \ name
1.13 pazsan 901: bl word gfind dup 0= ABORT" CROSS: Can't compile"
1.1 anton 902: 0> IF gexecute
903: ELSE dup >magic @ <imm> =
904: IF gexecute
905: ELSE compile (compile) gexecute THEN THEN ;Cond
906:
907: Cond: postpone ( -- ) restrict? \ name
1.13 pazsan 908: bl word gfind dup 0= ABORT" CROSS: Can't compile"
1.1 anton 909: 0> IF gexecute
910: ELSE dup >magic @ <imm> =
911: IF gexecute
912: ELSE compile (compile) gexecute THEN THEN ;Cond
913:
914: >MINIMAL
915: also minimal
916: \ Usefull words 13feb93py
917:
918: : KB 400 * ;
919:
920: \ define new [IFDEF] and [IFUNDEF] 20may93jaw
921:
1.43 ! pazsan 922: : defined? defined? ;
1.1 anton 923:
1.43 ! pazsan 924: : [IFDEF] defined? postpone [IF] ;
! 925: : [IFUNDEF] defined? 0= postpone [IF] ;
1.1 anton 926:
927: \ C: \- \+ Conditional Compiling 09jun93jaw
928:
1.43 ! pazsan 929: : C: >in @ defined? 0=
1.1 anton 930: IF >in ! T : H
931: ELSE drop
932: BEGIN bl word dup c@
933: IF count comment? s" ;" compare 0= ?EXIT
934: ELSE refill 0= ABORT" CROSS: Out of Input while C:"
935: THEN
936: AGAIN
937: THEN ;
938:
939: also minimal
940:
1.43 ! pazsan 941: : \- defined? IF postpone \ THEN ;
! 942: : \+ defined? 0= IF postpone \ THEN ;
1.1 anton 943:
944: : [IF] postpone [IF] ;
945: : [THEN] postpone [THEN] ;
946: : [ELSE] postpone [ELSE] ;
947:
948: Cond: [IF] [IF] ;Cond
949: Cond: [IFDEF] [IFDEF] ;Cond
950: Cond: [IFUNDEF] [IFUNDEF] ;Cond
951: Cond: [THEN] [THEN] ;Cond
952: Cond: [ELSE] [ELSE] ;Cond
953:
954: \ save-cross 17mar93py
955:
956: \ i'm not interested in bigforth features this time 10may93jaw
957: \ [IFDEF] file
958: \ also file
959: \ [THEN]
960: \ included throw after create-file 11may93jaw
961:
1.12 anton 962: bigendian Constant bigendian
1.1 anton 963:
1.34 anton 964: Create magic s" Gforth10" here over allot swap move
1.26 pazsan 965:
1.35 anton 966: char 1 bigendian + cell + magic 7 + c!
1.26 pazsan 967:
1.34 anton 968: : save-cross ( "image-name" "binary-name" -- )
969: bl parse ." Saving to " 2dup type cr
1.1 anton 970: w/o bin create-file throw >r
1.43 ! pazsan 971: NIL IF
! 972: s" #! " r@ write-file throw
! 973: bl parse r@ write-file throw
! 974: s" -i" r@ write-file throw
! 975: #lf r@ emit-file throw
! 976: r@ dup file-position throw drop 8 mod 8 swap ( file-id limit index )
! 977: ?do
! 978: bl over emit-file throw
! 979: loop
! 980: drop
! 981: magic 8 r@ write-file throw \ write magic
! 982: ELSE
! 983: bl parse 2drop
! 984: THEN
1.16 pazsan 985: image @ there r@ write-file throw \ write image
1.43 ! pazsan 986: NIL IF
! 987: bit$ @ there 1- cell>bit rshift 1+
1.16 pazsan 988: r@ write-file throw \ write tags
1.43 ! pazsan 989: THEN
1.1 anton 990: r> close-file throw ;
991:
992: \ words that should be in minimal
993:
1.43 ! pazsan 994: : here there ;
! 995: also forth [IFDEF] Label : Label Label ; [THEN] previous
! 996: : + + ;
! 997: : or or ;
! 998: : 1- 1- ;
! 999: : - - ;
! 1000: : 2* 2* ;
! 1001: : * * ;
! 1002: : / / ;
! 1003: : dup dup ;
! 1004: : over over ;
! 1005: : swap swap ;
! 1006: : rot rot ;
! 1007: : drop drop ;
! 1008: : = = ;
! 1009: : 0= 0= ;
! 1010: : lshift lshift ;
! 1011: : 2/ 2/ ;
1.19 pazsan 1012: : . . ;
1.42 pazsan 1013:
1014: mach-file count included
1.1 anton 1015:
1.43 ! pazsan 1016: : all-words ['] false IS skip? ;
! 1017: : needed-words ['] needed? IS skip? ;
! 1018: : undef-words ['] defined? IS skip? ;
1.1 anton 1019:
1.40 pazsan 1020: : \ postpone \ ; immediate
1021: : ( postpone ( ; immediate
1.1 anton 1022: : include bl word count included ;
1023: : .( [char] ) parse type ;
1024: : cr cr ;
1025:
1026: : times 0 ?DO dup T c, H LOOP drop ; \ used for space table creation
1027: only forth also minimal definitions
1028:
1029: \ cross-compiler words
1030:
1031: : decimal decimal ;
1032: : hex hex ;
1033:
1.3 pazsan 1034: : tudp T tudp H ;
1.39 pazsan 1035: : tup T tup H ;
1036:
1037: : doc-off false T to-doc H ! ;
1038: : doc-on true T to-doc H ! ;
1039:
1040: minimal
1.1 anton 1041:
1042: \ for debugging...
1043: : order order ;
1044: : words words ;
1045: : .s .s ;
1046:
1047: : bye bye ;
1048:
1049: \ turnkey direction
1050: : H forth ; immediate
1051: : T minimal ; immediate
1052: : G ghosts ; immediate
1053:
1054: : turnkey 0 set-order also Target definitions
1055: also Minimal also ;
1056:
1057: \ these ones are pefered:
1058:
1059: : lock turnkey ;
1060: : unlock forth also cross ;
1061:
1062: unlock definitions also minimal
1063: : lock lock ;
1064: lock
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