1: \ converts primitives to, e.g., C code
2:
3: \ Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.
4:
5: \ This file is part of Gforth.
6:
7: \ Gforth is free software; you can redistribute it and/or
8: \ modify it under the terms of the GNU General Public License
9: \ as published by the Free Software Foundation; either version 2
10: \ of the License, or (at your option) any later version.
11:
12: \ This program is distributed in the hope that it will be useful,
13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: \ GNU General Public License for more details.
16:
17: \ You should have received a copy of the GNU General Public License
18: \ along with this program; if not, write to the Free Software
19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20:
21:
22: \ This is not very nice (hard limits, no checking, assumes 1 chars = 1)
23:
24: \ Optimizations:
25: \ superfluous stores are removed. GCC removes the superfluous loads by itself
26: \ TOS and FTOS can be kept in register( variable)s.
27: \
28: \ Problems:
29: \ The TOS optimization is somewhat hairy. The problems by example:
30: \ 1) dup ( w -- w w ): w=TOS; sp-=1; sp[1]=w; TOS=w;
31: \ The store is not superfluous although the earlier opt. would think so
32: \ Alternatively: sp[0]=TOS; w=TOS; sp-=1; TOS=w;
33: \ 2) ( -- .. ): sp[0] = TOS; ... /* This additional store is necessary */
34: \ 3) ( .. -- ): ... TOS = sp[0]; /* as well as this load */
35: \ 4) ( -- ): /* but here they are unnecessary */
36: \ 5) Words that call NEXT themselves have to be done very carefully.
37: \
38: \ To do:
39: \ add the store optimization for doubles
40: \ regarding problem 1 above: It would be better (for over) to implement
41: \ the alternative
42:
43: warnings off
44:
45: [IFUNDEF] vocabulary \ we are executed just with kernel image
46: \ load the rest that is needed
47: \ (require fails because this file is needed from a
48: \ different directory with the wordlibraries)
49: include ./search.fs
50: include ./extend.fs
51: [THEN]
52:
53: [IFUNDEF] environment?
54: include ./environ.fs
55: [THEN]
56:
57: : struct% struct ; \ struct is redefined in gray
58:
59: include ./gray.fs
60:
61: 100 constant max-effect \ number of things on one side of a stack effect
62: 255 constant maxchar
63: maxchar 1+ constant eof-char
64: #tab constant tab-char
65: #lf constant nl-char
66:
67: variable rawinput \ pointer to next character to be scanned
68: variable endrawinput \ pointer to the end of the input (the char after the last)
69: variable cookedinput \ pointer to the next char to be parsed
70: variable line \ line number of char pointed to by input
71: 1 line !
72: 2variable filename \ filename of original input file
73: 0 0 filename 2!
74: 2variable f-comment
75: 0 0 f-comment 2!
76: variable skipsynclines \ are sync lines ("#line ...") invisible to the parser?
77: skipsynclines on
78:
79: : start ( -- addr )
80: cookedinput @ ;
81:
82: : end ( addr -- addr u )
83: cookedinput @ over - ;
84:
85: : quote ( -- )
86: [char] " emit ;
87:
88: variable output \ xt ( -- ) of output word
89:
90: : printprim ( -- )
91: output @ execute ;
92:
93: struct%
94: cell% 2* field stack-pointer \ stackpointer name
95: cell% 2* field stack-cast \ cast string for assignments to stack elements
96: cell% field stack-in-index-xt \ ( in-size item -- in-index )
97: cell% field stack-in \ number of stack items in effect in
98: cell% field stack-out \ number of stack items in effect out
99: end-struct stack%
100:
101: struct%
102: cell% 2* field item-name \ name, excluding stack prefixes
103: cell% field item-stack \ descriptor for the stack used, 0 is default
104: cell% field item-type \ descriptor for the item type
105: cell% field item-offset \ offset in stack items, 0 for the deepest element
106: end-struct item%
107:
108: struct%
109: cell% 2* field type-c-name
110: cell% field type-stack \ default stack
111: cell% field type-size \ size of type in stack items
112: cell% field type-fetch \ xt of fetch code generator ( item -- )
113: cell% field type-store \ xt of store code generator ( item -- )
114: end-struct type%
115:
116: : stack-in-index ( in-size item -- in-index )
117: item-offset @ - 1- ;
118:
119: : inst-in-index ( in-size item -- in-index )
120: nip dup item-offset @ swap item-type @ type-size @ + 1- ;
121:
122: : make-stack ( addr-ptr u1 addr-cast u2 "stack-name" -- )
123: create stack% %allot >r
124: save-mem r@ stack-cast 2!
125: save-mem r@ stack-pointer 2!
126: ['] stack-in-index r> stack-in-index-xt ! ;
127:
128: s" sp" save-mem s" (Cell)" make-stack data-stack
129: s" fp" save-mem s" " make-stack fp-stack
130: s" rp" save-mem s" (Cell)" make-stack return-stack
131: s" IP" save-mem s" error don't use # on results" make-stack inst-stream
132: ' inst-in-index inst-stream stack-in-index-xt !
133: \ !! initialize stack-in and stack-out
134:
135: \ stack items
136:
137: : init-item ( addr u addr1 -- )
138: \ initialize item at addr1 with name addr u
139: \ !! remove stack prefix
140: dup item% %size erase
141: item-name 2! ;
142:
143: : map-items { addr end xt -- }
144: \ perform xt for all items in array addr...end
145: end addr ?do
146: i xt execute
147: item% %size +loop ;
148:
149: \ various variables for storing stuff of one primitive
150:
151: 2variable forth-name
152: 2variable wordset
153: 2variable c-name
154: 2variable doc
155: 2variable c-code
156: 2variable forth-code
157: 2variable stack-string
158: create effect-in max-effect item% %size * allot
159: create effect-out max-effect item% %size * allot
160: variable effect-in-end ( pointer )
161: variable effect-out-end ( pointer )
162: variable c-line
163: 2variable c-filename
164: variable name-line
165: 2variable name-filename
166: 2variable last-name-filename
167:
168: variable primitive-number -10 primitive-number !
169: Variable function-number 0 function-number !
170:
171: \ for several reasons stack items of a word are stored in a wordlist
172: \ since neither forget nor marker are implemented yet, we make a new
173: \ wordlist for every word and store it in the variable items
174: variable items
175:
176: \ a few more set ops
177:
178: : bit-equivalent ( w1 w2 -- w3 )
179: xor invert ;
180:
181: : complement ( set1 -- set2 )
182: empty ['] bit-equivalent binary-set-operation ;
183:
184: \ the parser
185:
186: eof-char max-member \ the whole character set + EOF
187:
188: : getinput ( -- n )
189: rawinput @ endrawinput @ =
190: if
191: eof-char
192: else
193: cookedinput @ c@
194: endif ;
195:
196: :noname ( n -- )
197: dup bl > if
198: emit space
199: else
200: .
201: endif ;
202: print-token !
203:
204: : testchar? ( set -- f )
205: getinput member? ;
206: ' testchar? test-vector !
207:
208: : checksyncline ( -- )
209: \ when input points to a newline, check if the next line is a
210: \ sync line. If it is, perform the appropriate actions.
211: rawinput @ >r
212: s" #line " r@ over compare 0<> if
213: rdrop 1 line +! EXIT
214: endif
215: 0. r> 6 chars + 20 >number drop >r drop line ! r> ( c-addr )
216: dup c@ bl = if
217: char+ dup c@ [char] " <> abort" sync line syntax"
218: char+ dup 100 [char] " scan drop swap 2dup - save-mem filename 2!
219: char+
220: endif
221: dup c@ nl-char <> abort" sync line syntax"
222: skipsynclines @ if
223: dup char+ rawinput !
224: rawinput @ c@ cookedinput @ c!
225: endif
226: drop ;
227:
228: : ?nextchar ( f -- )
229: ?not? if
230: filename 2@ type ." :" line @ 0 .r ." : syntax error, wrong char:"
231: getinput . cr
232: rawinput @ endrawinput @ over - 100 min type cr
233: abort
234: endif
235: rawinput @ endrawinput @ <> if
236: rawinput @ c@
237: 1 chars rawinput +!
238: 1 chars cookedinput +!
239: nl-char = if
240: checksyncline
241: endif
242: rawinput @ c@ cookedinput @ c!
243: endif ;
244:
245: : charclass ( set "name" -- )
246: ['] ?nextchar terminal ;
247:
248: : .. ( c1 c2 -- set )
249: ( creates a set that includes the characters c, c1<=c<=c2 )
250: empty copy-set
251: swap 1+ rot do
252: i over add-member
253: loop ;
254:
255: : ` ( -- terminal ) ( use: ` c )
256: ( creates anonymous terminal for the character c )
257: char singleton ['] ?nextchar make-terminal ;
258:
259: char a char z .. char A char Z .. union char _ singleton union charclass letter
260: char 0 char 9 .. charclass digit
261: bl singleton tab-char over add-member charclass white
262: nl-char singleton eof-char over add-member complement charclass nonl
263: nl-char singleton eof-char over add-member
264: char : over add-member complement charclass nocolonnl
265: bl 1+ maxchar .. char \ singleton complement intersection
266: charclass nowhitebq
267: bl 1+ maxchar .. charclass nowhite
268: char " singleton eof-char over add-member complement charclass noquote
269: nl-char singleton charclass nl
270: eof-char singleton charclass eof
271:
272:
273: (( letter (( letter || digit )) **
274: )) <- c-ident ( -- )
275:
276: (( ` # ?? (( letter || digit || ` : )) **
277: )) <- stack-ident ( -- )
278:
279: (( nowhitebq nowhite ** ))
280: <- forth-ident ( -- )
281:
282: Variable forth-flag
283: Variable c-flag
284:
285: (( (( ` e || ` E )) {{ start }} nonl **
286: {{ end evaluate }}
287: )) <- eval-comment ( ... -- ... )
288:
289: (( (( ` f || ` F )) {{ start }} nonl **
290: {{ end forth-flag @ IF type cr ELSE 2drop THEN }}
291: )) <- forth-comment ( -- )
292:
293: (( (( ` c || ` C )) {{ start }} nonl **
294: {{ end c-flag @ IF type cr ELSE 2drop THEN }}
295: )) <- c-comment ( -- )
296:
297: (( ` - nonl ** {{
298: forth-flag @ IF ." [ELSE]" cr THEN
299: c-flag @ IF ." #else" cr THEN }}
300: )) <- else-comment
301:
302: (( ` + {{ start }} nonl ** {{ end
303: dup
304: IF c-flag @
305: IF ." #ifdef HAS_" bounds ?DO I c@ toupper emit LOOP cr
306: THEN
307: forth-flag @
308: IF ." has? " type ." [IF]" cr THEN
309: ELSE 2drop
310: c-flag @ IF ." #endif" cr THEN
311: forth-flag @ IF ." [THEN]" cr THEN
312: THEN }}
313: )) <- if-comment
314:
315: (( (( eval-comment || forth-comment || c-comment || else-comment || if-comment )) ?? nonl ** )) <- comment-body
316:
317: (( ` \ comment-body nl )) <- comment ( -- )
318:
319: (( {{ start }} stack-ident {{ end 2 pick init-item item% %size + }} white ** )) **
320: <- stack-items
321:
322: (( {{ effect-in }} stack-items {{ effect-in-end ! }}
323: ` - ` - white **
324: {{ effect-out }} stack-items {{ effect-out-end ! }}
325: )) <- stack-effect ( -- )
326:
327: (( {{ s" " doc 2! s" " forth-code 2! s" " wordset 2! }}
328: (( {{ line @ name-line ! filename 2@ name-filename 2! }}
329: {{ start }} forth-ident {{ end 2dup forth-name 2! c-name 2! }} white ++
330: ` ( white ** {{ start }} stack-effect {{ end stack-string 2! }} ` ) white **
331: (( {{ start }} forth-ident {{ end wordset 2! }} white **
332: (( {{ start }} c-ident {{ end c-name 2! }} )) ??
333: )) ?? nl
334: ))
335: (( ` " ` " {{ start }} (( noquote ++ ` " )) ++ {{ end 1- doc 2! }} ` " white ** nl )) ??
336: {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl ** nl white ** )) ** {{ end c-code 2! skipsynclines on }}
337: (( ` : white ** nl
338: {{ start }} (( nonl ++ nl white ** )) ++ {{ end forth-code 2! }}
339: )) ?? {{ printprim }}
340: (( nl || eof ))
341: )) <- primitive ( -- )
342:
343: (( (( comment || primitive || nl white ** )) ** eof ))
344: parser primitives2something
345: warnings @ [IF]
346: .( parser generated ok ) cr
347: [THEN]
348:
349: : primfilter ( file-id xt -- )
350: \ fileid is for the input file, xt ( -- ) is for the output word
351: output !
352: here dup rawinput ! cookedinput !
353: here unused rot read-file throw
354: dup here + endrawinput !
355: allot
356: align
357: checksyncline
358: \ begin
359: \ getinput dup eof-char = ?EXIT emit true ?nextchar
360: \ again ;
361: primitives2something ;
362:
363: \ types
364:
365: : stack-access ( n stack -- )
366: \ print a stack access at index n of stack
367: stack-pointer 2@ type
368: dup
369: if
370: ." [" 0 .r ." ]"
371: else
372: drop ." TOS"
373: endif ;
374:
375: : item-in-index { item -- n }
376: \ n is the index of item (in the in-effect)
377: item item-stack @ dup >r stack-in @ ( in-size r:stack )
378: item r> stack-in-index-xt @ execute ;
379:
380: : fetch-single ( item -- )
381: \ fetch a single stack item from its stack
382: >r
383: r@ item-name 2@ type
384: ." = ("
385: r@ item-type @ type-c-name 2@ type ." ) "
386: r@ item-in-index r@ item-stack @ stack-access
387: ." ;" cr
388: rdrop ;
389:
390: : fetch-double ( item -- )
391: \ fetch a double stack item from its stack
392: >r
393: ." FETCH_DCELL("
394: r@ item-name 2@ type ." , "
395: r@ item-in-index r@ item-stack @ 2dup ." (Cell)" stack-access
396: ." , " -1 under+ ." (Cell)" stack-access
397: ." );" cr
398: rdrop ;
399:
400: : same-as-in? ( item -- f )
401: \ f is true iff the offset and stack of item is the same as on input
402: >r
403: r@ item-name 2@ items @ search-wordlist 0=
404: abort" bug"
405: execute @
406: dup r@ =
407: if \ item first appeared in output
408: drop false
409: else
410: dup item-stack @ r@ item-stack @ =
411: swap item-offset @ r@ item-offset @ = and
412: endif
413: rdrop ;
414:
415: : item-out-index ( item -- n )
416: \ n is the index of item (in the in-effect)
417: >r r@ item-stack @ stack-out @ r> item-offset @ - 1- ;
418:
419: : really-store-single ( item -- )
420: >r
421: r@ item-out-index r@ item-stack @ stack-access ." = "
422: r@ item-stack @ stack-cast 2@ type
423: r@ item-name 2@ type ." ;"
424: rdrop ;
425:
426: : store-single ( item -- )
427: >r
428: r@ same-as-in?
429: if
430: r@ item-in-index 0= r@ item-out-index 0= xor
431: if
432: ." IF_" r@ item-stack @ stack-pointer 2@ type
433: ." TOS(" r@ really-store-single ." );" cr
434: endif
435: else
436: r@ really-store-single cr
437: endif
438: rdrop ;
439:
440: : store-double ( item -- )
441: \ !! store optimization is not performed, because it is not yet needed
442: >r
443: ." STORE_DCELL(" r@ item-name 2@ type ." , "
444: r@ item-out-index r@ item-stack @ 2dup stack-access
445: ." , " -1 under+ stack-access
446: ." );" cr
447: rdrop ;
448:
449: : single ( -- xt1 xt2 n )
450: ['] fetch-single ['] store-single 1 ;
451:
452: : double ( -- xt1 xt2 n )
453: ['] fetch-double ['] store-double 2 ;
454:
455: : s, ( addr u -- )
456: \ allocate a string
457: here swap dup allot move ;
458:
459: wordlist constant prefixes
460:
461: : declare ( addr "name" -- )
462: \ remember that there is a stack item at addr called name
463: create , ;
464:
465: : !default ( w addr -- )
466: dup @ if
467: 2drop \ leave nonzero alone
468: else
469: !
470: endif ;
471:
472: : create-type { addr u xt1 xt2 n stack -- } ( "prefix" -- )
473: \ describes a type
474: \ addr u specifies the C type name
475: \ stack effect entries of the type start with prefix
476: create type% %allot >r
477: addr u save-mem r@ type-c-name 2!
478: xt1 r@ type-fetch !
479: xt2 r@ type-store !
480: n r@ type-size !
481: stack r@ type-stack !
482: rdrop ;
483:
484: : type-prefix ( xt1 xt2 n stack "prefix" -- )
485: create-type
486: does> ( item -- )
487: \ initialize item
488: { item typ }
489: typ item item-type !
490: typ type-stack @ item item-stack !default
491: item item-name 2@ items @ search-wordlist 0= if \ new name
492: item item-name 2@ 2dup nextname item declare
493: typ type-c-name 2@ type space type ." ;" cr
494: else
495: drop
496: endif ;
497:
498: : execute-prefix ( item addr1 u1 -- )
499: \ execute the word ( item -- ) associated with the longest prefix
500: \ of addr1 u1
501: 0 swap ?do
502: dup i prefixes search-wordlist
503: if \ ok, we have the type ( item addr1 xt )
504: nip execute
505: UNLOOP EXIT
506: endif
507: -1 s+loop
508: \ we did not find a type, abort
509: true abort" unknown prefix" ;
510:
511: : declaration ( item -- )
512: dup item-name 2@ execute-prefix ;
513:
514: : declaration-list ( addr1 addr2 -- )
515: ['] declaration map-items ;
516:
517: : declarations ( -- )
518: wordlist dup items ! set-current
519: effect-in effect-in-end @ declaration-list
520: effect-out effect-out-end @ declaration-list ;
521:
522: : stack-prefix ( stack "prefix" -- )
523: name tuck nextname create ( stack length ) 2,
524: does> ( item -- )
525: 2@ { item stack prefix-length }
526: item item-name 2@ prefix-length /string item item-name 2!
527: stack item item-stack !
528: item declaration ;
529:
530: \ offset computation
531: \ the leftmost (i.e. deepest) item has offset 0
532: \ the rightmost item has the highest offset
533:
534: : compute-offset { item xt -- }
535: \ xt specifies in/out; update stack-in/out and set item-offset
536: item item-type @ type-size @
537: item item-stack @ xt execute dup @ >r +!
538: r> item item-offset ! ;
539:
540: : compute-offset-in ( addr1 addr2 -- )
541: ['] stack-in compute-offset ;
542:
543: : compute-offset-out ( addr1 addr2 -- )
544: ['] stack-out compute-offset ;
545:
546: : clear-stack { -- }
547: dup stack-in off stack-out off ;
548:
549: : compute-offsets ( -- )
550: data-stack clear-stack fp-stack clear-stack return-stack clear-stack
551: inst-stream clear-stack
552: effect-in effect-in-end @ ['] compute-offset-in map-items
553: effect-out effect-out-end @ ['] compute-offset-out map-items
554: inst-stream stack-out @ 0<> abort" # can only be on the input side" ;
555:
556: : flush-a-tos { stack -- }
557: stack stack-out @ 0<> stack stack-in @ 0= and
558: if
559: ." IF_" stack stack-pointer 2@ 2dup type ." TOS("
560: 2dup type ." [0] = " type ." TOS);" cr
561: endif ;
562:
563: : flush-tos ( -- )
564: data-stack flush-a-tos
565: fp-stack flush-a-tos
566: return-stack flush-a-tos ;
567:
568: : fill-a-tos { stack -- }
569: stack stack-out @ 0= stack stack-in @ 0<> and
570: if
571: ." IF_" stack stack-pointer 2@ 2dup type ." TOS("
572: 2dup type ." TOS = " type ." [0]);" cr
573: endif ;
574:
575: : fill-tos ( -- )
576: \ !! inst-stream for prefetching?
577: fp-stack fill-a-tos
578: data-stack fill-a-tos
579: return-stack fill-a-tos ;
580:
581: : fetch ( addr -- )
582: dup item-type @ type-fetch @ execute ;
583:
584: : fetches ( -- )
585: effect-in effect-in-end @ ['] fetch map-items ;
586:
587: : stack-pointer-update { stack -- }
588: \ stack grow downwards
589: stack stack-in @ stack stack-out @ -
590: ?dup-if \ this check is not necessary, gcc would do this for us
591: stack stack-pointer 2@ type ." += " 0 .r ." ;" cr
592: endif ;
593:
594: : inst-pointer-update ( -- )
595: inst-stream stack-in @ ?dup-if
596: ." INC_IP(" 0 .r ." );" cr
597: endif ;
598:
599: : stack-pointer-updates ( -- )
600: inst-pointer-update
601: data-stack stack-pointer-update
602: fp-stack stack-pointer-update
603: return-stack stack-pointer-update ;
604:
605: : store ( item -- )
606: \ f is true if the item should be stored
607: \ f is false if the store is probably not necessary
608: dup item-type @ type-store @ execute ;
609:
610: : stores ( -- )
611: effect-out effect-out-end @ ['] store map-items ;
612:
613: : output-c-tail ( -- )
614: \ the final part of the generated C code
615: ." NEXT_P1;" cr
616: stores
617: fill-tos
618: ." NEXT_P2;" cr ;
619:
620: : type-c ( c-addr u -- )
621: \ like TYPE, but replaces "TAIL;" with tail code
622: begin ( c-addr1 u1 )
623: 2dup s" TAIL;" search
624: while ( c-addr1 u1 c-addr3 u3 )
625: 2dup 2>r drop nip over - type
626: output-c-tail
627: 2r> 5 /string
628: \ !! resync #line missing
629: repeat
630: 2drop type ;
631:
632: : print-type-prefix ( type -- )
633: body> >head .name ;
634:
635: : print-debug-arg { item -- }
636: ." fputs(" quote space item item-name 2@ type ." =" quote ." , vm_out); "
637: ." printarg_" item item-type @ print-type-prefix
638: ." (" item item-name 2@ type ." );" cr ;
639:
640: : print-debug-args ( -- )
641: ." #ifdef VM_DEBUG" cr
642: ." if (vm_debug) {" cr
643: effect-in effect-in-end @ ['] print-debug-arg map-items
644: ." fputc('\n', vm_out);" cr
645: ." }" cr
646: ." #endif" cr ;
647:
648: : output-c ( -- )
649: ." I_" c-name 2@ type ." : /* " forth-name 2@ type ." ( " stack-string 2@ type ." ) */" cr
650: ." /* " doc 2@ type ." */" cr
651: ." NAME(" quote forth-name 2@ type quote ." )" cr \ debugging
652: ." {" cr
653: ." DEF_CA" cr
654: declarations
655: compute-offsets \ for everything else
656: ." NEXT_P0;" cr
657: flush-tos
658: fetches
659: print-debug-args
660: stack-pointer-updates
661: ." {" cr
662: ." #line " c-line @ . quote c-filename 2@ type quote cr
663: c-code 2@ type-c
664: ." }" cr
665: output-c-tail
666: ." }" cr
667: cr
668: ;
669:
670: : disasm-arg { item -- }
671: item item-stack @ inst-stream = if
672: ." fputc(' ', vm_out); "
673: ." printarg_" item item-type @ print-type-prefix
674: ." ((" item item-type @ type-c-name 2@ type ." )"
675: ." ip[" item item-offset @ 1+ 0 .r ." ]);" cr
676: endif ;
677:
678: : disasm-args ( -- )
679: effect-in effect-in-end @ ['] disasm-arg map-items ;
680:
681: : output-disasm ( -- )
682: \ generate code for disassembling VM instructions
683: ." if (ip[0] == prim[" function-number @ 0 .r ." ]) {" cr
684: ." fputs(" quote forth-name 2@ type quote ." , vm_out);" cr
685: ." /* " declarations ." */" cr
686: compute-offsets
687: disasm-args
688: ." ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
689: ." } else "
690: 1 function-number +! ;
691:
692: : gen-arg-parm { item -- }
693: item item-stack @ inst-stream = if
694: ." , " item item-type @ type-c-name 2@ type space
695: item item-name 2@ type
696: endif ;
697:
698: : gen-args-parm ( -- )
699: effect-in effect-in-end @ ['] gen-arg-parm map-items ;
700:
701: : gen-arg-gen { item -- }
702: item item-stack @ inst-stream = if
703: ." genarg_" item item-type @ print-type-prefix
704: ." (ctp, " item item-name 2@ type ." );" cr
705: endif ;
706:
707: : gen-args-gen ( -- )
708: effect-in effect-in-end @ ['] gen-arg-gen map-items ;
709:
710: : output-gen ( -- )
711: \ generate C code for generating VM instructions
712: ." /* " declarations ." */" cr
713: compute-offsets
714: ." void gen_" c-name 2@ type ." (Inst **ctp" gen-args-parm ." )" cr
715: ." {" cr
716: ." gen_inst(ctp, vm_prim[" function-number @ 0 .r ." ]);" cr
717: gen-args-gen
718: ." }" cr
719: 1 function-number +! ;
720:
721: : stack-used? { stack -- f }
722: stack stack-in @ stack stack-out @ or 0<> ;
723:
724: : output-funclabel ( -- )
725: 1 function-number +!
726: ." &I_" c-name 2@ type ." ," cr ;
727:
728: : output-forthname ( -- )
729: 1 function-number +!
730: '" emit forth-name 2@ type '" emit ." ," cr ;
731:
732: : output-c-func ( -- )
733: \ used for word libraries
734: 1 function-number +!
735: ." Cell * I_" c-name 2@ type ." (Cell *SP, Cell **FP) /* " forth-name 2@ type
736: ." ( " stack-string 2@ type ." ) */" cr
737: ." /* " doc 2@ type ." */" cr
738: ." NAME(" quote forth-name 2@ type quote ." )" cr
739: \ debugging
740: ." {" cr
741: declarations
742: compute-offsets \ for everything else
743: inst-stream stack-used? IF ." Cell *ip=IP;" cr THEN
744: data-stack stack-used? IF ." Cell *sp=SP;" cr THEN
745: fp-stack stack-used? IF ." Cell *fp=*FP;" cr THEN
746: return-stack stack-used? IF ." Cell *rp=*RP;" cr THEN
747: flush-tos
748: fetches
749: stack-pointer-updates
750: fp-stack stack-used? IF ." *FP=fp;" cr THEN
751: ." {" cr
752: ." #line " c-line @ . quote c-filename 2@ type quote cr
753: c-code 2@ type
754: ." }" cr
755: stores
756: fill-tos
757: ." return (sp);" cr
758: ." }" cr
759: cr ;
760:
761: : output-label ( -- )
762: ." (Label)&&I_" c-name 2@ type ." ," cr
763: -1 primitive-number +! ;
764:
765: : output-alias ( -- )
766: ( primitive-number @ . ." alias " ) ." Primitive " forth-name 2@ type cr
767: -1 primitive-number +! ;
768:
769: : output-forth ( -- )
770: forth-code @ 0=
771: IF \ output-alias
772: \ this is bad for ec: an alias is compiled if tho word does not exist!
773: \ JAW
774: ELSE ." : " forth-name 2@ type ." ( "
775: stack-string 2@ type ." )" cr
776: forth-code 2@ type cr
777: -1 primitive-number +!
778: THEN ;
779:
780: : output-tag-file ( -- )
781: name-filename 2@ last-name-filename 2@ compare if
782: name-filename 2@ last-name-filename 2!
783: #ff emit cr
784: name-filename 2@ type
785: ." ,0" cr
786: endif ;
787:
788: : output-tag ( -- )
789: output-tag-file
790: forth-name 2@ 1+ type
791: 127 emit
792: space forth-name 2@ type space
793: 1 emit
794: name-line @ 0 .r
795: ." ,0" cr ;
796:
797: [IFDEF] documentation
798: : register-doc ( -- )
799: get-current documentation set-current
800: forth-name 2@ nextname create
801: forth-name 2@ 2,
802: stack-string 2@ condition-stack-effect 2,
803: wordset 2@ 2,
804: c-name 2@ condition-pronounciation 2,
805: doc 2@ 2,
806: set-current ;
807: [THEN]
808:
809: : process-file ( addr u xt -- )
810: >r
811: save-mem 2dup filename 2!
812: 0 function-number !
813: r/o open-file abort" cannot open file"
814: warnings @ if
815: ." ------------ CUT HERE -------------" cr endif
816: r> primfilter ;
817:
818: : process ( xt -- )
819: bl word count rot
820: process-file ;
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