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