Annotation of gforth/libcc.fs, revision 1.43
1.1 anton 1: \ libcc.fs foreign function interface implemented using a C compiler
2:
1.27 anton 3: \ Copyright (C) 2006,2007 Free Software Foundation, Inc.
1.1 anton 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
1.28 anton 9: \ as published by the Free Software Foundation, either version 3
1.1 anton 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
1.28 anton 18: \ along with this program. If not, see http://www.gnu.org/licenses/.
1.1 anton 19:
20:
21: \ What this implementation does is this: if it sees a declaration like
22:
1.2 anton 23: \ \ something that tells it that the current library is libc
1.6 anton 24: \ \c #include <unistd.h>
1.2 anton 25: \ c-function dlseek lseek n d n -- d
1.1 anton 26:
27: \ it genererates C code similar to the following:
28:
29: \ #include <gforth.h>
1.2 anton 30: \ #include <unistd.h>
1.1 anton 31: \
1.2 anton 32: \ void gforth_c_lseek_ndn_d(void)
1.1 anton 33: \ {
34: \ Cell *sp = gforth_SP;
35: \ Float *fp = gforth_FP;
1.2 anton 36: \ long long result; /* longest type in C */
37: \ gforth_ll2d(lseek(sp[3],gforth_d2ll(sp[2],sp[1]),sp[0]),sp[3],sp[2]);
38: \ gforth_SP = sp+2;
1.1 anton 39: \ }
40:
41: \ Then it compiles this code and dynamically links it into the Gforth
42: \ system (batching and caching are future work). It also dynamically
43: \ links lseek. Performing DLSEEK then puts the function pointer of
1.2 anton 44: \ the function pointer of gforth_c_lseek_ndn_d on the stack and
45: \ calls CALL-C.
46:
1.7 anton 47: \ ToDo:
48:
49: \ Batching, caching and lazy evaluation:
50:
51: \ Batching:
52:
53: \ New words are deferred, and the corresponding C functions are
54: \ collected in one file, until the first word is EXECUTEd; then the
55: \ file is compiled and linked into the system, and the word is
56: \ resolved.
57:
58: \ Caching:
59:
60: \ Instead of compiling all this stuff anew for every execution, we
61: \ keep the files around and have an index file containing the function
62: \ names and their corresponding .so files. If the needed wrapper name
63: \ is already present, it is just linked instead of generating the
64: \ wrapper again. This is all done by loading the index file(s?),
65: \ which define words for the wrappers in a separate wordlist.
66:
67: \ The files are built in .../lib/gforth/$VERSION/libcc/ or
68: \ ~/.gforth/libcc/$HOST/.
69:
1.2 anton 70: \ other things to do:
71:
72: \ c-variable forth-name c-name
73: \ c-constant forth-name c-name
74:
1.20 anton 75: \ Todo: conversion between function pointers and xts (both directions)
76:
77: \ taking an xt and turning it into a function pointer:
78:
79: \ e.g., assume we have the xt of + and want to create a C function int
80: \ gforth_callback_plus(int, int), and then pass the pointer to that
81: \ function:
82:
83: \ There should be Forth code like this:
84: \ ] + 0 (bye)
85: \ Assume that the start of this code is START
86:
87: \ Now, there should be a C function:
88:
89: \ int gforth_callback_plus(int p1, int p2)
90: \ {
91: \ Cell *sp = gforth_SP;
92: \ Float *fp = gforth_FP;
93: \ Float *fp = gforth_FP;
94: \ Address lp = gforth_LP;
95: \ sp -= 2;
96: \ sp[0] = p1;
97: \ sp[1] = p2;
98: \ gforth_engine(START, sp, rp, fp, lp);
99: \ sp += 1;
100: \ gforth_RP = rp;
101: \ gforth_SP = sp;
102: \ gforth_FP = fp;
103: \ gforth_LP = lp;
104: \ return sp[0];
105: \ }
106:
107: \ and the pointer to that function is the C function pointer for the XT of +.
108:
109: \ Future problems:
110: \ how to combine the Forth code generation with inlining
111: \ START is not a constant across executions (when caching the C files)
112: \ Solution: make START a variable, and store into it on startup with dlsym
113:
114: \ Syntax:
115: \ callback <rettype> <params> <paramtypes> -- <rettype>
116:
1.2 anton 117:
118: \ data structures
119:
1.10 anton 120: \ For every c-function, we have three words: two anonymous words
121: \ created by c-function-ft (first time) and c-function-rt (run-time),
122: \ and a named deferred word. The deferred word first points to the
123: \ first-time word, then to the run-time word; the run-time word calls
124: \ the c function.
125:
1.29 anton 126: [ifundef] parse-name
127: ' parse-word alias parse-name
128: [then]
129: [ifundef] defer!
130: : defer! ( xt xt-deferred -- ) \ gforth defer-store
131: \G Changes the @code{defer}red word @var{xt-deferred} to execute @var{xt}.
132: >body [ has? rom [IF] ] @ [ [THEN] ] ! ;
133: [then]
134:
135: \ : delete-file 2drop 0 ;
1.12 anton 136:
137: require struct.fs
138:
139: \ counted-string
140:
1.10 anton 141: \ c-function-ft word body:
1.12 anton 142: struct
143: cell% field cff-cfr \ xt of c-function-rt word
144: cell% field cff-deferred \ xt of c-function deferred word
145: cell% field cff-lha \ address of the lib-handle for the lib that
146: \ contains the wrapper function of the word
147: char% field cff-rtype \ return type
148: char% field cff-np \ number of parameters
149: 1 0 field cff-ptypes \ #npar parameter types
150: \ counted string: c-name
151: end-struct cff%
152:
1.14 anton 153: variable c-source-file-id \ contains the source file id of the current batch
154: 0 c-source-file-id !
155: variable lib-handle-addr \ points to the library handle of the current batch.
156: \ the library handle is 0 if the current
157: \ batch is not yet compiled.
1.39 anton 158: here 0 , lib-handle-addr ! \ just make sure LIB-HANDLE always works
1.23 anton 159: 2variable lib-filename \ filename without extension
160: 2variable lib-modulename \ basename of the file without extension
1.2 anton 161:
1.35 anton 162: : delete-file 2drop 0 ;
163:
1.3 anton 164: : .nb ( n -- )
1.2 anton 165: 0 .r ;
166:
167: : const+ ( n1 "name" -- n2 )
168: dup constant 1+ ;
169:
1.10 anton 170: : front-string { c-addr1 u1 c-addr2 u2 -- c-addr3 u3 }
171: \ insert string c-addr2 u2 in buffer c-addr1 u1; c-addr3 u3 is the
172: \ remainder of the buffer.
173: assert( u1 u2 u>= )
174: c-addr2 c-addr1 u2 move
175: c-addr1 u1 u2 /string ;
176:
177: : front-char { c-addr1 u1 c -- c-addr3 u2 }
178: \ insert c in buffer c-addr1 u1; c-addr3 u3 is the remainder of
179: \ the buffer.
180: assert( u1 0 u> )
181: c c-addr1 c!
182: c-addr1 u1 1 /string ;
183:
1.15 anton 184: : s+ { addr1 u1 addr2 u2 -- addr u }
185: u1 u2 + allocate throw { addr }
186: addr1 addr u1 move
187: addr2 addr u1 + u2 move
188: addr u1 u2 +
189: ;
190:
191: : append { addr1 u1 addr2 u2 -- addr u }
192: addr1 u1 u2 + dup { u } resize throw { addr }
193: addr2 addr u1 + u2 move
194: addr u ;
195:
1.6 anton 196: \ linked list stuff (should go elsewhere)
197:
198: struct
199: cell% field list-next
200: 1 0 field list-payload
201: end-struct list%
202:
203: : list-insert { node list -- }
204: list list-next @ node list-next !
205: node list list-next ! ;
206:
207: : list-append { node endlistp -- }
208: \ insert node at place pointed to by endlistp
209: node endlistp @ list-insert
210: node list-next endlistp ! ;
211:
212: : list-map ( ... list xt -- ... )
213: \ xt ( ... node -- ... )
214: { xt } begin { node }
215: node while
216: node xt execute
217: node list-next @
218: repeat ;
219:
1.33 anton 220: \ linked libraries
221:
222: list%
223: cell% 2* field c-lib-string
224: end-struct c-lib%
225:
226: variable c-libs \ linked list of library names (without "lib")
227:
228: : add-lib ( c-addr u -- )
229: \G Add library lib@i{string} to the list of libraries, where
230: \G @i{string} is represented by @i{c-addr u}.
231: c-lib% %size allocate throw dup >r
232: c-lib-string 2!
233: r> c-libs list-insert ;
234:
235: : append-l ( c-addr1 u1 node -- c-addr2 u2 )
236: \ append " -l<nodelib>" to string1
237: >r s" -l" append r> c-lib-string 2@ append ;
238:
1.6 anton 239: \ C prefix lines
240:
241: \ linked list of longcstrings: [ link | count-cell | characters ]
242:
243: list%
244: cell% field c-prefix-count
245: 1 0 field c-prefix-chars
246: end-struct c-prefix%
247:
248: variable c-prefix-lines 0 c-prefix-lines !
249: variable c-prefix-lines-end c-prefix-lines c-prefix-lines-end !
250:
1.14 anton 251: : print-c-prefix-line ( node -- )
252: dup c-prefix-chars swap c-prefix-count @ type cr ;
253:
254: : print-c-prefix-lines ( -- )
255: c-prefix-lines @ ['] print-c-prefix-line list-map ;
256:
1.6 anton 257: : save-c-prefix-line ( c-addr u -- )
1.14 anton 258: c-source-file-id @ ?dup-if
259: >r 2dup r> write-line throw
260: then
1.6 anton 261: align here 0 , c-prefix-lines-end list-append ( c-addr u )
262: longstring, ;
263:
1.18 anton 264: : \c ( "rest-of-line" -- ) \ gforth backslash-c
1.17 anton 265: \G One line of C declarations for the C interface
1.6 anton 266: -1 parse save-c-prefix-line ;
267:
1.19 anton 268: s" #include <gforth/" version-string s+ s" /libcc.h>" append ( c-addr u )
269: 2dup save-c-prefix-line drop free throw
1.5 anton 270:
1.6 anton 271: \ Types (for parsing)
1.5 anton 272:
1.2 anton 273: wordlist constant libcc-types
274:
275: get-current libcc-types set-current
276:
277: \ index values
278: -1
279: const+ -- \ end of arguments
280: const+ n \ integer cell
1.5 anton 281: const+ a \ address cell
1.2 anton 282: const+ d \ double
283: const+ r \ float
284: const+ func \ C function pointer
285: const+ void
286: drop
287:
288: set-current
289:
290: : parse-libcc-type ( "libcc-type" -- u )
291: parse-name libcc-types search-wordlist 0= -13 and throw execute ;
292:
293: : parse-function-types ( "{libcc-type}" "--" "libcc-type" -- )
294: here 2 chars allot here begin
295: parse-libcc-type dup 0>= while
296: c,
297: repeat
1.3 anton 298: drop here swap - over char+ c!
299: parse-libcc-type dup 0< -32 and throw swap c! ;
1.2 anton 300:
301: : type-letter ( n -- c )
1.5 anton 302: chars s" nadrfv" drop + c@ ;
1.2 anton 303:
304: \ count-stacks
305:
306: : count-stacks-n ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
307: 1+ ;
308:
1.5 anton 309: : count-stacks-a ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
1.2 anton 310: 1+ ;
311:
312: : count-stacks-d ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
313: 2 + ;
314:
315: : count-stacks-r ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
316: swap 1+ swap ;
317:
318: : count-stacks-func ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
319: 1+ ;
320:
321: : count-stacks-void ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
322: ;
323:
324: create count-stacks-types
325: ' count-stacks-n ,
1.5 anton 326: ' count-stacks-a ,
1.2 anton 327: ' count-stacks-d ,
328: ' count-stacks-r ,
329: ' count-stacks-func ,
330: ' count-stacks-void ,
331:
332: : count-stacks ( pars -- fp-change sp-change )
333: \ pars is an addr u pair
334: 0 0 2swap over + swap u+do
1.3 anton 335: i c@ cells count-stacks-types + @ execute
1.2 anton 336: loop ;
337:
338: \ gen-pars
339:
340: : gen-par-n ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.5 anton 341: ." sp[" 1- dup .nb ." ]" ;
1.2 anton 342:
1.5 anton 343: : gen-par-a ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.2 anton 344: ." (void *)(" gen-par-n ." )" ;
345:
346: : gen-par-d ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.4 anton 347: ." gforth_d2ll(" gen-par-n ." ," gen-par-n ." )" ;
1.2 anton 348:
349: : gen-par-r ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.3 anton 350: swap 1- tuck ." fp[" .nb ." ]" ;
1.2 anton 351:
352: : gen-par-func ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.5 anton 353: gen-par-a ;
1.2 anton 354:
355: : gen-par-void ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
356: -32 throw ;
357:
358: create gen-par-types
359: ' gen-par-n ,
1.5 anton 360: ' gen-par-a ,
1.2 anton 361: ' gen-par-d ,
362: ' gen-par-r ,
363: ' gen-par-func ,
364: ' gen-par-void ,
365:
366: : gen-par ( fp-depth1 sp-depth1 partype -- fp-depth2 sp-depth2 )
1.3 anton 367: cells gen-par-types + @ execute ;
1.2 anton 368:
369: \ the call itself
370:
371: : gen-wrapped-call { d: pars d: c-name fp-change1 sp-change1 -- }
372: c-name type ." ("
1.3 anton 373: fp-change1 sp-change1 pars over + swap u+do
1.2 anton 374: i c@ gen-par
375: i 1+ i' < if
376: ." ,"
377: endif
378: loop
379: 2drop ." )" ;
380:
381: \ calls for various kinds of return values
382:
383: : gen-wrapped-void ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
384: 2dup 2>r gen-wrapped-call 2r> ;
385:
1.3 anton 386: : gen-wrapped-n ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
1.5 anton 387: 2dup gen-par-n 2>r ." =" gen-wrapped-call 2r> ;
1.3 anton 388:
1.5 anton 389: : gen-wrapped-a ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
390: 2dup gen-par-n 2>r ." =(Cell)" gen-wrapped-call 2r> ;
1.3 anton 391:
392: : gen-wrapped-d ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
393: ." gforth_ll2d(" gen-wrapped-void
1.5 anton 394: ." ," gen-par-n ." ," gen-par-n ." )" ;
1.3 anton 395:
396: : gen-wrapped-r ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
1.30 anton 397: 2dup gen-par-r 2>r ." =" gen-wrapped-call 2r> ;
1.3 anton 398:
399: : gen-wrapped-func ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
1.5 anton 400: gen-wrapped-a ;
1.3 anton 401:
1.2 anton 402: create gen-wrapped-types
403: ' gen-wrapped-n ,
1.5 anton 404: ' gen-wrapped-a ,
1.2 anton 405: ' gen-wrapped-d ,
406: ' gen-wrapped-r ,
407: ' gen-wrapped-func ,
408: ' gen-wrapped-void ,
409:
410: : gen-wrapped-stmt ( pars c-name fp-change1 sp-change1 ret -- fp-change sp-change )
1.3 anton 411: cells gen-wrapped-types + @ execute ;
1.2 anton 412:
1.10 anton 413: : wrapper-function-name ( addr -- c-addr u )
414: \ addr points to the return type index of a c-function descriptor
415: count { r-type } count { d: pars }
416: pars + count { d: c-name }
417: s" gforth_c_" { d: prefix }
418: prefix nip c-name nip + pars nip + 3 + { u }
419: u allocate throw { c-addr }
420: c-addr u
421: prefix front-string c-name front-string '_ front-char
422: pars bounds u+do
423: i c@ type-letter front-char
424: loop
425: '_ front-char r-type type-letter front-char assert( dup 0= )
426: 2drop c-addr u ;
427:
1.2 anton 428: : gen-wrapper-function ( addr -- )
429: \ addr points to the return type index of a c-function descriptor
1.10 anton 430: dup { descriptor }
1.13 anton 431: count { ret } count 2dup { d: pars } chars + count { d: c-name }
1.23 anton 432: ." void " lib-modulename 2@ type ." _LTX_" descriptor wrapper-function-name 2dup type drop free throw
1.10 anton 433: .\" (void)\n"
1.4 anton 434: .\" {\n Cell MAYBE_UNUSED *sp = gforth_SP;\n Float MAYBE_UNUSED *fp = gforth_FP;\n "
1.2 anton 435: pars c-name 2over count-stacks ret gen-wrapped-stmt .\" ;\n"
436: ?dup-if
1.3 anton 437: ." gforth_SP = sp+" .nb .\" ;\n"
1.2 anton 438: endif
439: ?dup-if
1.3 anton 440: ." gforth_FP = fp+" .nb .\" ;\n"
1.2 anton 441: endif
1.3 anton 442: .\" }\n" ;
1.2 anton 443:
1.40 anton 444: : scan-back { c-addr u1 c -- c-addr u2 }
445: \ the last occurence of c in c-addr u1 is at u2-1; if it does not
446: \ occur, u2=0.
447: c-addr 1- c-addr u1 + 1- u-do
448: i c@ c = if
449: c-addr i over - 1+ unloop exit endif
450: 1 -loop
451: c-addr 0 ;
452:
453: : dirname ( c-addr1 u1 -- c-addr2 u2 )
454: \ directory name of the file name c-addr1 u1, including the final "/".
455: '/ scan-back ;
456:
457: : basename ( c-addr1 u1 -- c-addr2 u2 )
458: \ file name without directory component
459: 2dup dirname nip /string ;
1.16 anton 460:
1.15 anton 461: : gen-filename ( x -- c-addr u )
1.35 anton 462: \ generates a file basename for lib-handle-addr X
1.16 anton 463: 0 <<# ['] #s $10 base-execute #>
1.35 anton 464: s" gforth_c_" 2swap s+ #>> ;
465:
1.43 ! anton 466: 2variable libcc-named-dir-v
! 467:
1.40 anton 468: : libcc-named-dir ( -- c-addr u )
1.43 ! anton 469: libcc-named-dir-v 2@ ;
1.40 anton 470:
471: : libcc-tmp-dir ( -- c-addr u )
1.41 anton 472: s" ~/.gforth/libcc-tmp/" ;
1.40 anton 473:
474: : prepend-dirname ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 )
1.41 anton 475: 2over s+ 2swap drop free throw ;
1.35 anton 476:
1.42 anton 477: 0 value libcc-path
478:
479: : open-wrappers ( -- addr|0 )
480: lib-filename 2@ s" .la" s+
481: 2dup libcc-named-dir string-prefix? if ( c-addr u )
482: \ see if we can open it in the path
483: libcc-named-dir nip /string
484: libcc-path open-path-file if
485: 0 exit endif
486: ( wfile-id c-addr2 u2 ) rot close-file throw save-mem ( c-addr2 u2 )
487: endif
488: \ 2dup cr type
489: 2dup open-lib >r
490: drop free throw r> ;
491:
1.39 anton 492: : c-library-name-setup ( c-addr u -- )
1.35 anton 493: assert( c-source-file-id @ 0= )
1.40 anton 494: { d: filename }
1.37 anton 495: here 0 , lib-handle-addr ! filename lib-filename 2!
1.40 anton 496: filename basename lib-modulename 2! ;
1.39 anton 497:
498: : c-library-name-create ( -- )
499: lib-filename 2@ s" .c" s+ 2dup w/o create-file throw
500: dup c-source-file-id !
501: ['] print-c-prefix-lines swap outfile-execute
502: drop free throw ;
503:
1.40 anton 504: : c-named-library-name ( c-addr u -- )
1.39 anton 505: \ set up filenames for a (possibly new) library; c-addr u is the
506: \ basename of the library
1.40 anton 507: libcc-named-dir prepend-dirname c-library-name-setup
1.37 anton 508: open-wrappers dup if
509: lib-handle-addr @ !
510: else
1.39 anton 511: drop c-library-name-create
1.37 anton 512: endif ;
513:
1.40 anton 514: : c-tmp-library-name ( c-addr u -- )
1.39 anton 515: \ set up filenames for a new library; c-addr u is the basename of
516: \ the library
1.40 anton 517: libcc-tmp-dir prepend-dirname c-library-name-setup c-library-name-create ;
1.39 anton 518:
1.37 anton 519: : lib-handle ( -- addr )
520: lib-handle-addr @ @ ;
1.15 anton 521:
1.12 anton 522: : init-c-source-file ( -- )
1.37 anton 523: lib-handle 0= if
524: c-source-file-id @ 0= if
1.40 anton 525: here gen-filename c-tmp-library-name
1.37 anton 526: endif
1.12 anton 527: endif ;
1.11 anton 528:
529: : c-source-file ( -- file-id )
1.12 anton 530: c-source-file-id @ assert( dup ) ;
1.11 anton 531:
1.37 anton 532: : notype-execute ( ... xt -- ... )
533: what's type { oldtype } try
534: ['] 2drop is type execute 0
535: restore
536: oldtype is type
537: endtry
538: throw ;
539:
540: : c-source-file-execute ( ... xt -- ... )
541: \ direct the output of xt to c-source-file, or nothing
542: lib-handle if
543: notype-execute
544: else
545: c-source-file outfile-execute
546: endif ;
547:
1.24 anton 548: : .lib-error ( -- )
549: [ifdef] lib-error
550: ['] cr stderr outfile-execute
1.31 anton 551: lib-error ['] type stderr outfile-execute
1.24 anton 552: [then] ;
1.23 anton 553:
1.33 anton 554: DEFER compile-wrapper-function ( -- )
1.35 anton 555: : compile-wrapper-function1 ( -- )
1.37 anton 556: lib-handle 0= if
557: c-source-file close-file throw
558: 0 c-source-file-id !
559: [ libtool-command s" --silent --mode=compile gcc -I " s+
560: s" includedir" getenv append ] sliteral
561: s" -O -c " s+ lib-filename 2@ append s" .c -o " append
562: lib-filename 2@ append s" .lo" append ( c-addr u )
563: \ cr 2dup type
564: 2dup system drop free throw $? abort" libtool compile failed"
565: [ libtool-command s" --silent --mode=link gcc -module -rpath " s+ ] sliteral
1.40 anton 566: lib-filename 2@ dirname s+ s" " append
1.37 anton 567: lib-filename 2@ append s" .lo -o " append
568: lib-filename 2@ append s" .la" append ( c-addr u )
569: c-libs @ ['] append-l list-map
570: \ 2dup type cr
571: 2dup system drop free throw $? abort" libtool link failed"
572: open-wrappers dup 0= if
573: .lib-error true abort" open-lib failed"
574: endif
575: ( lib-handle ) lib-handle-addr @ !
1.23 anton 576: endif
1.35 anton 577: lib-filename 2@ drop free throw 0 0 lib-filename 2! ;
578: ' compile-wrapper-function1 IS compile-wrapper-function
1.5 anton 579: \ s" ar rcs xxx.a xxx.o" system
580: \ $? abort" ar generated error" ;
581:
1.12 anton 582: : link-wrapper-function { cff -- sym }
583: cff cff-rtype wrapper-function-name { d: wrapper-name }
1.23 anton 584: wrapper-name cff cff-lha @ @ assert( dup ) lib-sym dup 0= if
1.24 anton 585: .lib-error -&32 throw
1.23 anton 586: endif
1.10 anton 587: wrapper-name drop free throw ;
1.8 anton 588:
1.12 anton 589: : c-function-ft ( xt-defr xt-cfr "c-name" "{libcc-type}" "--" "libcc-type" -- )
1.8 anton 590: \ build time/first time action for c-function
1.12 anton 591: init-c-source-file
592: noname create 2, lib-handle-addr @ ,
1.2 anton 593: parse-name { d: c-name }
1.8 anton 594: here parse-function-types c-name string,
1.37 anton 595: ['] gen-wrapper-function c-source-file-execute
1.8 anton 596: does> ( ... -- ... )
1.10 anton 597: dup 2@ { xt-defer xt-cfr }
1.12 anton 598: dup cff-lha @ @ 0= if
599: compile-wrapper-function
600: endif
601: link-wrapper-function xt-cfr >body !
1.8 anton 602: xt-cfr xt-defer defer!
603: xt-cfr execute ;
604:
605: : c-function-rt ( -- )
606: \ run-time definition for c function; addr is the address where
607: \ the sym should be stored
608: noname create 0 ,
1.2 anton 609: does> ( ... -- ... )
610: @ call-c ;
611:
1.18 anton 612: : c-function ( "forth-name" "c-name" "@{type@}" "--" "type" -- ) \ gforth
1.17 anton 613: \G Define a Forth word @i{forth-name}. @i{Forth-name} has the
614: \G specified stack effect and calls the C function @code{c-name}.
1.8 anton 615: defer lastxt dup c-function-rt lastxt c-function-ft
616: lastxt swap defer! ;
1.33 anton 617:
618: : clear-libs ( -- )
619: \G Clear the list of libs
620: c-source-file-id @ if
621: compile-wrapper-function
622: endif
623: 0 c-libs ! ;
624: clear-libs
1.35 anton 625:
626: : c-library-incomplete ( -- )
627: true abort" Called function of unfinished named C library" ;
628:
629: : c-library-name ( c-addr u -- ) \ gforth
1.38 anton 630: \G Start a C library interface with name @i{c-addr u}.
1.35 anton 631: clear-libs
632: ['] c-library-incomplete is compile-wrapper-function
1.40 anton 633: c-named-library-name ;
1.35 anton 634:
635: : c-library ( "name" -- ) \ gforth
636: \G Parsing version of @code{c-library-name}
1.39 anton 637: parse-name save-mem c-library-name ;
1.35 anton 638:
1.38 anton 639: : end-c-library ( -- ) \ gforth
640: \G Finish and (if necessary) build the latest C library interface.
1.35 anton 641: ['] compile-wrapper-function1 is compile-wrapper-function
642: compile-wrapper-function1 ;
1.43 ! anton 643:
! 644: : init-libcc ( -- )
! 645: s" ~/.gforth/libcc-named/" libcc-named-dir-v 2!
! 646: make-path to libcc-path
! 647: libcc-named-dir libcc-path also-path
! 648: [ s" libccdir" getenv ] sliteral libcc-path also-path
! 649: ;
! 650:
! 651: init-libcc
! 652:
! 653: :noname ( -- )
! 654: defers 'cold
! 655: init-libcc ;
! 656: is 'cold
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