Annotation of gforth/libcc.fs, revision 1.55
1.1 anton 1: \ libcc.fs foreign function interface implemented using a C compiler
2:
1.50 anton 3: \ Copyright (C) 2006,2007,2008 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:
1.10 anton 139: \ c-function-ft word body:
1.12 anton 140: struct
141: cell% field cff-cfr \ xt of c-function-rt word
142: cell% field cff-deferred \ xt of c-function deferred word
143: cell% field cff-lha \ address of the lib-handle for the lib that
144: \ contains the wrapper function of the word
145: char% field cff-rtype \ return type
146: char% field cff-np \ number of parameters
147: 1 0 field cff-ptypes \ #npar parameter types
148: \ counted string: c-name
149: end-struct cff%
150:
1.14 anton 151: variable c-source-file-id \ contains the source file id of the current batch
152: 0 c-source-file-id !
153: variable lib-handle-addr \ points to the library handle of the current batch.
154: \ the library handle is 0 if the current
155: \ batch is not yet compiled.
1.39 anton 156: here 0 , lib-handle-addr ! \ just make sure LIB-HANDLE always works
1.23 anton 157: 2variable lib-filename \ filename without extension
158: 2variable lib-modulename \ basename of the file without extension
1.44 anton 159: 2variable libcc-named-dir-v \ directory for named libcc wrapper libraries
160: 0 value libcc-path \ pointer to path of library directories
1.2 anton 161:
1.49 anton 162: defer replace-rpath ( c-addr1 u1 -- c-addr2 u2 )
163: ' noop is replace-rpath
1.35 anton 164:
1.3 anton 165: : .nb ( n -- )
1.2 anton 166: 0 .r ;
167:
168: : const+ ( n1 "name" -- n2 )
169: dup constant 1+ ;
170:
1.10 anton 171: : front-string { c-addr1 u1 c-addr2 u2 -- c-addr3 u3 }
172: \ insert string c-addr2 u2 in buffer c-addr1 u1; c-addr3 u3 is the
173: \ remainder of the buffer.
174: assert( u1 u2 u>= )
175: c-addr2 c-addr1 u2 move
176: c-addr1 u1 u2 /string ;
177:
178: : front-char { c-addr1 u1 c -- c-addr3 u2 }
179: \ insert c in buffer c-addr1 u1; c-addr3 u3 is the remainder of
180: \ the buffer.
181: assert( u1 0 u> )
182: c c-addr1 c!
183: c-addr1 u1 1 /string ;
184:
1.15 anton 185: : s+ { addr1 u1 addr2 u2 -- addr u }
186: u1 u2 + allocate throw { addr }
187: addr1 addr u1 move
188: addr2 addr u1 + u2 move
189: addr u1 u2 +
190: ;
191:
192: : append { addr1 u1 addr2 u2 -- addr u }
193: addr1 u1 u2 + dup { u } resize throw { addr }
194: addr2 addr u1 + u2 move
195: addr u ;
196:
1.6 anton 197: \ linked list stuff (should go elsewhere)
198:
199: struct
200: cell% field list-next
201: 1 0 field list-payload
202: end-struct list%
203:
204: : list-insert { node list -- }
205: list list-next @ node list-next !
206: node list list-next ! ;
207:
208: : list-append { node endlistp -- }
209: \ insert node at place pointed to by endlistp
210: node endlistp @ list-insert
211: node list-next endlistp ! ;
212:
213: : list-map ( ... list xt -- ... )
214: \ xt ( ... node -- ... )
215: { xt } begin { node }
216: node while
217: node xt execute
218: node list-next @
219: repeat ;
220:
1.33 anton 221: \ linked libraries
222:
223: list%
224: cell% 2* field c-lib-string
225: end-struct c-lib%
226:
227: variable c-libs \ linked list of library names (without "lib")
228:
1.53 anton 229: : add-lib ( c-addr u -- ) \ gforth
1.33 anton 230: \G Add library lib@i{string} to the list of libraries, where
231: \G @i{string} is represented by @i{c-addr u}.
232: c-lib% %size allocate throw dup >r
233: c-lib-string 2!
234: r> c-libs list-insert ;
235:
236: : append-l ( c-addr1 u1 node -- c-addr2 u2 )
237: \ append " -l<nodelib>" to string1
238: >r s" -l" append r> c-lib-string 2@ append ;
239:
1.6 anton 240: \ C prefix lines
241:
242: \ linked list of longcstrings: [ link | count-cell | characters ]
243:
244: list%
245: cell% field c-prefix-count
246: 1 0 field c-prefix-chars
247: end-struct c-prefix%
248:
249: variable c-prefix-lines 0 c-prefix-lines !
250: variable c-prefix-lines-end c-prefix-lines c-prefix-lines-end !
251:
1.14 anton 252: : print-c-prefix-line ( node -- )
253: dup c-prefix-chars swap c-prefix-count @ type cr ;
254:
255: : print-c-prefix-lines ( -- )
256: c-prefix-lines @ ['] print-c-prefix-line list-map ;
257:
1.6 anton 258: : save-c-prefix-line ( c-addr u -- )
1.14 anton 259: c-source-file-id @ ?dup-if
260: >r 2dup r> write-line throw
261: then
1.6 anton 262: align here 0 , c-prefix-lines-end list-append ( c-addr u )
263: longstring, ;
264:
1.18 anton 265: : \c ( "rest-of-line" -- ) \ gforth backslash-c
1.17 anton 266: \G One line of C declarations for the C interface
1.6 anton 267: -1 parse save-c-prefix-line ;
268:
1.19 anton 269: s" #include <gforth/" version-string s+ s" /libcc.h>" append ( c-addr u )
270: 2dup save-c-prefix-line drop free throw
1.5 anton 271:
1.6 anton 272: \ Types (for parsing)
1.5 anton 273:
1.2 anton 274: wordlist constant libcc-types
275:
276: get-current libcc-types set-current
277:
278: \ index values
279: -1
280: const+ -- \ end of arguments
281: const+ n \ integer cell
1.5 anton 282: const+ a \ address cell
1.2 anton 283: const+ d \ double
284: const+ r \ float
285: const+ func \ C function pointer
286: const+ void
287: drop
288:
289: set-current
290:
291: : parse-libcc-type ( "libcc-type" -- u )
292: parse-name libcc-types search-wordlist 0= -13 and throw execute ;
293:
294: : parse-function-types ( "{libcc-type}" "--" "libcc-type" -- )
295: here 2 chars allot here begin
296: parse-libcc-type dup 0>= while
297: c,
298: repeat
1.3 anton 299: drop here swap - over char+ c!
300: parse-libcc-type dup 0< -32 and throw swap c! ;
1.2 anton 301:
302: : type-letter ( n -- c )
1.52 pazsan 303: chars s" nadrfv" drop + c@ ;
1.2 anton 304:
305: \ count-stacks
306:
307: : count-stacks-n ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
308: 1+ ;
309:
1.5 anton 310: : count-stacks-a ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
1.2 anton 311: 1+ ;
312:
313: : count-stacks-d ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
314: 2 + ;
315:
316: : count-stacks-r ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
317: swap 1+ swap ;
318:
319: : count-stacks-func ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
320: 1+ ;
321:
322: : count-stacks-void ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
323: ;
324:
325: create count-stacks-types
326: ' count-stacks-n ,
1.5 anton 327: ' count-stacks-a ,
1.2 anton 328: ' count-stacks-d ,
329: ' count-stacks-r ,
330: ' count-stacks-func ,
331: ' count-stacks-void ,
332:
333: : count-stacks ( pars -- fp-change sp-change )
334: \ pars is an addr u pair
335: 0 0 2swap over + swap u+do
1.3 anton 336: i c@ cells count-stacks-types + @ execute
1.2 anton 337: loop ;
338:
339: \ gen-pars
340:
341: : gen-par-n ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.5 anton 342: ." sp[" 1- dup .nb ." ]" ;
1.2 anton 343:
1.5 anton 344: : gen-par-a ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.2 anton 345: ." (void *)(" gen-par-n ." )" ;
346:
347: : gen-par-d ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.4 anton 348: ." gforth_d2ll(" gen-par-n ." ," gen-par-n ." )" ;
1.2 anton 349:
350: : gen-par-r ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.3 anton 351: swap 1- tuck ." fp[" .nb ." ]" ;
1.2 anton 352:
353: : gen-par-func ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.5 anton 354: gen-par-a ;
1.2 anton 355:
356: : gen-par-void ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
357: -32 throw ;
358:
359: create gen-par-types
360: ' gen-par-n ,
1.5 anton 361: ' gen-par-a ,
1.2 anton 362: ' gen-par-d ,
363: ' gen-par-r ,
364: ' gen-par-func ,
365: ' gen-par-void ,
366:
367: : gen-par ( fp-depth1 sp-depth1 partype -- fp-depth2 sp-depth2 )
1.3 anton 368: cells gen-par-types + @ execute ;
1.2 anton 369:
370: \ the call itself
371:
372: : gen-wrapped-call { d: pars d: c-name fp-change1 sp-change1 -- }
373: c-name type ." ("
1.3 anton 374: fp-change1 sp-change1 pars over + swap u+do
1.2 anton 375: i c@ gen-par
376: i 1+ i' < if
377: ." ,"
378: endif
379: loop
380: 2drop ." )" ;
381:
382: \ calls for various kinds of return values
383:
384: : gen-wrapped-void ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
385: 2dup 2>r gen-wrapped-call 2r> ;
386:
1.3 anton 387: : gen-wrapped-n ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
1.5 anton 388: 2dup gen-par-n 2>r ." =" gen-wrapped-call 2r> ;
1.3 anton 389:
1.5 anton 390: : gen-wrapped-a ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
391: 2dup gen-par-n 2>r ." =(Cell)" gen-wrapped-call 2r> ;
1.3 anton 392:
393: : gen-wrapped-d ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
394: ." gforth_ll2d(" gen-wrapped-void
1.5 anton 395: ." ," gen-par-n ." ," gen-par-n ." )" ;
1.3 anton 396:
397: : gen-wrapped-r ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
1.30 anton 398: 2dup gen-par-r 2>r ." =" gen-wrapped-call 2r> ;
1.3 anton 399:
400: : gen-wrapped-func ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
1.5 anton 401: gen-wrapped-a ;
1.3 anton 402:
1.2 anton 403: create gen-wrapped-types
404: ' gen-wrapped-n ,
1.5 anton 405: ' gen-wrapped-a ,
1.2 anton 406: ' gen-wrapped-d ,
407: ' gen-wrapped-r ,
408: ' gen-wrapped-func ,
409: ' gen-wrapped-void ,
410:
411: : gen-wrapped-stmt ( pars c-name fp-change1 sp-change1 ret -- fp-change sp-change )
1.3 anton 412: cells gen-wrapped-types + @ execute ;
1.2 anton 413:
1.10 anton 414: : wrapper-function-name ( addr -- c-addr u )
415: \ addr points to the return type index of a c-function descriptor
416: count { r-type } count { d: pars }
417: pars + count { d: c-name }
418: s" gforth_c_" { d: prefix }
419: prefix nip c-name nip + pars nip + 3 + { u }
420: u allocate throw { c-addr }
421: c-addr u
422: prefix front-string c-name front-string '_ front-char
423: pars bounds u+do
424: i c@ type-letter front-char
425: loop
426: '_ front-char r-type type-letter front-char assert( dup 0= )
427: 2drop c-addr u ;
428:
1.2 anton 429: : gen-wrapper-function ( addr -- )
430: \ addr points to the return type index of a c-function descriptor
1.10 anton 431: dup { descriptor }
1.13 anton 432: count { ret } count 2dup { d: pars } chars + count { d: c-name }
1.23 anton 433: ." void " lib-modulename 2@ type ." _LTX_" descriptor wrapper-function-name 2dup type drop free throw
1.54 pazsan 434: .\" (GFORTH_ARGS)\n"
1.4 anton 435: .\" {\n Cell MAYBE_UNUSED *sp = gforth_SP;\n Float MAYBE_UNUSED *fp = gforth_FP;\n "
1.2 anton 436: pars c-name 2over count-stacks ret gen-wrapped-stmt .\" ;\n"
437: ?dup-if
1.3 anton 438: ." gforth_SP = sp+" .nb .\" ;\n"
1.2 anton 439: endif
440: ?dup-if
1.3 anton 441: ." gforth_FP = fp+" .nb .\" ;\n"
1.2 anton 442: endif
1.3 anton 443: .\" }\n" ;
1.2 anton 444:
1.40 anton 445: : scan-back { c-addr u1 c -- c-addr u2 }
446: \ the last occurence of c in c-addr u1 is at u2-1; if it does not
447: \ occur, u2=0.
448: c-addr 1- c-addr u1 + 1- u-do
449: i c@ c = if
450: c-addr i over - 1+ unloop exit endif
451: 1 -loop
452: c-addr 0 ;
453:
454: : dirname ( c-addr1 u1 -- c-addr2 u2 )
455: \ directory name of the file name c-addr1 u1, including the final "/".
456: '/ scan-back ;
457:
458: : basename ( c-addr1 u1 -- c-addr2 u2 )
459: \ file name without directory component
460: 2dup dirname nip /string ;
1.16 anton 461:
1.15 anton 462: : gen-filename ( x -- c-addr u )
1.35 anton 463: \ generates a file basename for lib-handle-addr X
1.16 anton 464: 0 <<# ['] #s $10 base-execute #>
1.35 anton 465: s" gforth_c_" 2swap s+ #>> ;
466:
1.40 anton 467: : libcc-named-dir ( -- c-addr u )
1.43 anton 468: libcc-named-dir-v 2@ ;
1.40 anton 469:
470: : libcc-tmp-dir ( -- c-addr u )
1.41 anton 471: s" ~/.gforth/libcc-tmp/" ;
1.40 anton 472:
473: : prepend-dirname ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 )
1.41 anton 474: 2over s+ 2swap drop free throw ;
1.35 anton 475:
1.42 anton 476: : open-wrappers ( -- addr|0 )
477: lib-filename 2@ s" .la" s+
478: 2dup libcc-named-dir string-prefix? if ( c-addr u )
479: \ see if we can open it in the path
480: libcc-named-dir nip /string
481: libcc-path open-path-file if
482: 0 exit endif
483: ( wfile-id c-addr2 u2 ) rot close-file throw save-mem ( c-addr2 u2 )
484: endif
485: \ 2dup cr type
486: 2dup open-lib >r
487: drop free throw r> ;
488:
1.39 anton 489: : c-library-name-setup ( c-addr u -- )
1.35 anton 490: assert( c-source-file-id @ 0= )
1.40 anton 491: { d: filename }
1.37 anton 492: here 0 , lib-handle-addr ! filename lib-filename 2!
1.40 anton 493: filename basename lib-modulename 2! ;
1.39 anton 494:
495: : c-library-name-create ( -- )
496: lib-filename 2@ s" .c" s+ 2dup w/o create-file throw
497: dup c-source-file-id !
498: ['] print-c-prefix-lines swap outfile-execute
499: drop free throw ;
500:
1.40 anton 501: : c-named-library-name ( c-addr u -- )
1.39 anton 502: \ set up filenames for a (possibly new) library; c-addr u is the
503: \ basename of the library
1.40 anton 504: libcc-named-dir prepend-dirname c-library-name-setup
1.37 anton 505: open-wrappers dup if
506: lib-handle-addr @ !
507: else
1.39 anton 508: drop c-library-name-create
1.37 anton 509: endif ;
510:
1.40 anton 511: : c-tmp-library-name ( c-addr u -- )
1.39 anton 512: \ set up filenames for a new library; c-addr u is the basename of
513: \ the library
1.40 anton 514: libcc-tmp-dir prepend-dirname c-library-name-setup c-library-name-create ;
1.39 anton 515:
1.37 anton 516: : lib-handle ( -- addr )
517: lib-handle-addr @ @ ;
1.15 anton 518:
1.12 anton 519: : init-c-source-file ( -- )
1.37 anton 520: lib-handle 0= if
521: c-source-file-id @ 0= if
1.40 anton 522: here gen-filename c-tmp-library-name
1.37 anton 523: endif
1.12 anton 524: endif ;
1.11 anton 525:
526: : c-source-file ( -- file-id )
1.12 anton 527: c-source-file-id @ assert( dup ) ;
1.11 anton 528:
1.37 anton 529: : notype-execute ( ... xt -- ... )
530: what's type { oldtype } try
531: ['] 2drop is type execute 0
532: restore
533: oldtype is type
534: endtry
535: throw ;
536:
537: : c-source-file-execute ( ... xt -- ... )
538: \ direct the output of xt to c-source-file, or nothing
539: lib-handle if
540: notype-execute
541: else
542: c-source-file outfile-execute
543: endif ;
544:
1.24 anton 545: : .lib-error ( -- )
546: [ifdef] lib-error
547: ['] cr stderr outfile-execute
1.31 anton 548: lib-error ['] type stderr outfile-execute
1.24 anton 549: [then] ;
1.23 anton 550:
1.33 anton 551: DEFER compile-wrapper-function ( -- )
1.35 anton 552: : compile-wrapper-function1 ( -- )
1.37 anton 553: lib-handle 0= if
554: c-source-file close-file throw
555: 0 c-source-file-id !
1.48 anton 556: [ libtool-command s" --silent --mode=compile --tag=CC " s+
557: libtool-cc append s" -I " append
558: s" includedir" getenv append ] sliteral
1.37 anton 559: s" -O -c " s+ lib-filename 2@ append s" .c -o " append
560: lib-filename 2@ append s" .lo" append ( c-addr u )
1.55 ! pazsan 561: \ 2dup type cr
1.37 anton 562: 2dup system drop free throw $? abort" libtool compile failed"
1.48 anton 563: [ libtool-command s" --silent --mode=link --tag=CC " s+
1.55 ! pazsan 564: libtool-cc append libtool-flags append s" -module -rpath " s+ ] sliteral
1.49 anton 565: lib-filename 2@ dirname replace-rpath s+ s" " append
1.37 anton 566: lib-filename 2@ append s" .lo -o " append
567: lib-filename 2@ append s" .la" append ( c-addr u )
568: c-libs @ ['] append-l list-map
1.47 pazsan 569: \ 2dup type cr
1.37 anton 570: 2dup system drop free throw $? abort" libtool link failed"
571: open-wrappers dup 0= if
572: .lib-error true abort" open-lib failed"
573: endif
574: ( lib-handle ) lib-handle-addr @ !
1.23 anton 575: endif
1.35 anton 576: lib-filename 2@ drop free throw 0 0 lib-filename 2! ;
577: ' compile-wrapper-function1 IS compile-wrapper-function
1.5 anton 578: \ s" ar rcs xxx.a xxx.o" system
579: \ $? abort" ar generated error" ;
580:
1.12 anton 581: : link-wrapper-function { cff -- sym }
582: cff cff-rtype wrapper-function-name { d: wrapper-name }
1.23 anton 583: wrapper-name cff cff-lha @ @ assert( dup ) lib-sym dup 0= if
1.24 anton 584: .lib-error -&32 throw
1.23 anton 585: endif
1.10 anton 586: wrapper-name drop free throw ;
1.8 anton 587:
1.12 anton 588: : c-function-ft ( xt-defr xt-cfr "c-name" "{libcc-type}" "--" "libcc-type" -- )
1.8 anton 589: \ build time/first time action for c-function
1.12 anton 590: init-c-source-file
591: noname create 2, lib-handle-addr @ ,
1.2 anton 592: parse-name { d: c-name }
1.8 anton 593: here parse-function-types c-name string,
1.37 anton 594: ['] gen-wrapper-function c-source-file-execute
1.8 anton 595: does> ( ... -- ... )
1.10 anton 596: dup 2@ { xt-defer xt-cfr }
1.12 anton 597: dup cff-lha @ @ 0= if
598: compile-wrapper-function
599: endif
600: link-wrapper-function xt-cfr >body !
1.8 anton 601: xt-cfr xt-defer defer!
602: xt-cfr execute ;
603:
604: : c-function-rt ( -- )
605: \ run-time definition for c function; addr is the address where
606: \ the sym should be stored
607: noname create 0 ,
1.2 anton 608: does> ( ... -- ... )
609: @ call-c ;
610:
1.18 anton 611: : c-function ( "forth-name" "c-name" "@{type@}" "--" "type" -- ) \ gforth
1.17 anton 612: \G Define a Forth word @i{forth-name}. @i{Forth-name} has the
613: \G specified stack effect and calls the C function @code{c-name}.
1.8 anton 614: defer lastxt dup c-function-rt lastxt c-function-ft
615: lastxt swap defer! ;
1.33 anton 616:
1.53 anton 617: : clear-libs ( -- ) \ gforth
1.33 anton 618: \G Clear the list of libs
619: c-source-file-id @ if
620: compile-wrapper-function
621: endif
622: 0 c-libs ! ;
623: clear-libs
1.35 anton 624:
625: : c-library-incomplete ( -- )
626: true abort" Called function of unfinished named C library" ;
627:
628: : c-library-name ( c-addr u -- ) \ gforth
1.38 anton 629: \G Start a C library interface with name @i{c-addr u}.
1.35 anton 630: clear-libs
631: ['] c-library-incomplete is compile-wrapper-function
1.40 anton 632: c-named-library-name ;
1.35 anton 633:
634: : c-library ( "name" -- ) \ gforth
635: \G Parsing version of @code{c-library-name}
1.39 anton 636: parse-name save-mem c-library-name ;
1.35 anton 637:
1.38 anton 638: : end-c-library ( -- ) \ gforth
639: \G Finish and (if necessary) build the latest C library interface.
1.35 anton 640: ['] compile-wrapper-function1 is compile-wrapper-function
641: compile-wrapper-function1 ;
1.43 anton 642:
643: : init-libcc ( -- )
644: s" ~/.gforth/libcc-named/" libcc-named-dir-v 2!
1.45 pazsan 645: [IFDEF] make-path
1.43 anton 646: make-path to libcc-path
647: libcc-named-dir libcc-path also-path
648: [ s" libccdir" getenv ] sliteral libcc-path also-path
1.45 pazsan 649: [THEN]
1.43 anton 650: ;
651:
652: init-libcc
653:
654: :noname ( -- )
655: defers 'cold
656: init-libcc ;
657: is 'cold
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