Annotation of gforth/libcc.fs, revision 1.70
1.1 anton 1: \ libcc.fs foreign function interface implemented using a C compiler
2:
1.69 anton 3: \ Copyright (C) 2006,2007,2008,2009,2010,2011 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:
1.20 anton 70: \ Todo: conversion between function pointers and xts (both directions)
71:
72: \ taking an xt and turning it into a function pointer:
73:
74: \ e.g., assume we have the xt of + and want to create a C function int
75: \ gforth_callback_plus(int, int), and then pass the pointer to that
76: \ function:
77:
78: \ There should be Forth code like this:
79: \ ] + 0 (bye)
80: \ Assume that the start of this code is START
81:
82: \ Now, there should be a C function:
83:
84: \ int gforth_callback_plus(int p1, int p2)
85: \ {
86: \ Cell *sp = gforth_SP;
87: \ Float *fp = gforth_FP;
88: \ Float *fp = gforth_FP;
89: \ Address lp = gforth_LP;
90: \ sp -= 2;
91: \ sp[0] = p1;
92: \ sp[1] = p2;
93: \ gforth_engine(START, sp, rp, fp, lp);
94: \ sp += 1;
95: \ gforth_RP = rp;
96: \ gforth_SP = sp;
97: \ gforth_FP = fp;
98: \ gforth_LP = lp;
99: \ return sp[0];
100: \ }
101:
102: \ and the pointer to that function is the C function pointer for the XT of +.
103:
104: \ Future problems:
105: \ how to combine the Forth code generation with inlining
106: \ START is not a constant across executions (when caching the C files)
107: \ Solution: make START a variable, and store into it on startup with dlsym
108:
109: \ Syntax:
110: \ callback <rettype> <params> <paramtypes> -- <rettype>
111:
1.2 anton 112:
113: \ data structures
114:
1.10 anton 115: \ For every c-function, we have three words: two anonymous words
116: \ created by c-function-ft (first time) and c-function-rt (run-time),
117: \ and a named deferred word. The deferred word first points to the
118: \ first-time word, then to the run-time word; the run-time word calls
119: \ the c function.
120:
1.29 anton 121: [ifundef] parse-name
122: ' parse-word alias parse-name
123: [then]
124: [ifundef] defer!
125: : defer! ( xt xt-deferred -- ) \ gforth defer-store
126: \G Changes the @code{defer}red word @var{xt-deferred} to execute @var{xt}.
127: >body [ has? rom [IF] ] @ [ [THEN] ] ! ;
128: [then]
129:
130: \ : delete-file 2drop 0 ;
1.12 anton 131:
132: require struct.fs
1.56 anton 133: require mkdir.fs
1.12 anton 134:
1.10 anton 135: \ c-function-ft word body:
1.12 anton 136: struct
137: cell% field cff-cfr \ xt of c-function-rt word
138: cell% field cff-deferred \ xt of c-function deferred word
139: cell% field cff-lha \ address of the lib-handle for the lib that
140: \ contains the wrapper function of the word
1.62 pazsan 141: char% field cff-ctype \ call type (function=1, value=0)
1.12 anton 142: char% field cff-rtype \ return type
143: char% field cff-np \ number of parameters
144: 1 0 field cff-ptypes \ #npar parameter types
145: \ counted string: c-name
146: end-struct cff%
147:
1.14 anton 148: variable c-source-file-id \ contains the source file id of the current batch
149: 0 c-source-file-id !
150: variable lib-handle-addr \ points to the library handle of the current batch.
151: \ the library handle is 0 if the current
152: \ batch is not yet compiled.
1.39 anton 153: here 0 , lib-handle-addr ! \ just make sure LIB-HANDLE always works
1.23 anton 154: 2variable lib-filename \ filename without extension
155: 2variable lib-modulename \ basename of the file without extension
1.44 anton 156: 2variable libcc-named-dir-v \ directory for named libcc wrapper libraries
1.65 pazsan 157: Variable libcc-path \ pointer to path of library directories
1.2 anton 158:
1.49 anton 159: defer replace-rpath ( c-addr1 u1 -- c-addr2 u2 )
160: ' noop is replace-rpath
1.35 anton 161:
1.3 anton 162: : .nb ( n -- )
1.2 anton 163: 0 .r ;
164:
165: : const+ ( n1 "name" -- n2 )
166: dup constant 1+ ;
167:
1.10 anton 168: : front-string { c-addr1 u1 c-addr2 u2 -- c-addr3 u3 }
169: \ insert string c-addr2 u2 in buffer c-addr1 u1; c-addr3 u3 is the
170: \ remainder of the buffer.
171: assert( u1 u2 u>= )
172: c-addr2 c-addr1 u2 move
173: c-addr1 u1 u2 /string ;
174:
175: : front-char { c-addr1 u1 c -- c-addr3 u2 }
176: \ insert c in buffer c-addr1 u1; c-addr3 u3 is the remainder of
177: \ the buffer.
178: assert( u1 0 u> )
179: c c-addr1 c!
180: c-addr1 u1 1 /string ;
181:
1.15 anton 182: : s+ { addr1 u1 addr2 u2 -- addr u }
183: u1 u2 + allocate throw { addr }
184: addr1 addr u1 move
185: addr2 addr u1 + u2 move
186: addr u1 u2 +
187: ;
188:
189: : append { addr1 u1 addr2 u2 -- addr u }
190: addr1 u1 u2 + dup { u } resize throw { addr }
191: addr2 addr u1 + u2 move
192: addr u ;
193:
1.6 anton 194: \ linked list stuff (should go elsewhere)
195:
196: struct
197: cell% field list-next
198: 1 0 field list-payload
199: end-struct list%
200:
201: : list-insert { node list -- }
202: list list-next @ node list-next !
203: node list list-next ! ;
204:
205: : list-append { node endlistp -- }
206: \ insert node at place pointed to by endlistp
207: node endlistp @ list-insert
208: node list-next endlistp ! ;
209:
210: : list-map ( ... list xt -- ... )
211: \ xt ( ... node -- ... )
212: { xt } begin { node }
213: node while
214: node xt execute
215: node list-next @
216: repeat ;
217:
1.59 pazsan 218: 2variable c-libs \ library names in a string (without "lib")
1.33 anton 219:
1.53 anton 220: : add-lib ( c-addr u -- ) \ gforth
1.33 anton 221: \G Add library lib@i{string} to the list of libraries, where
1.59 pazsan 222: \G @i{string} is represented by @i{c-addr u}.
223: c-libs 2@ d0= IF 0 allocate throw 0 c-libs 2! THEN
224: c-libs 2@ s" -l" append 2swap append c-libs 2! ;
225:
226: : add-libpath ( c-addr u -- ) \ gforth
227: \G Add path @i{string} to the list of library search pathes, where
228: \G @i{string} is represented by @i{c-addr u}.
229: c-libs 2@ d0= IF 0 allocate throw 0 c-libs 2! THEN
230: c-libs 2@ s" -L" append 2swap append c-libs 2! ;
1.33 anton 231:
1.6 anton 232: \ C prefix lines
233:
234: \ linked list of longcstrings: [ link | count-cell | characters ]
235:
236: list%
237: cell% field c-prefix-count
238: 1 0 field c-prefix-chars
239: end-struct c-prefix%
240:
241: variable c-prefix-lines 0 c-prefix-lines !
242: variable c-prefix-lines-end c-prefix-lines c-prefix-lines-end !
243:
1.14 anton 244: : print-c-prefix-line ( node -- )
245: dup c-prefix-chars swap c-prefix-count @ type cr ;
246:
247: : print-c-prefix-lines ( -- )
248: c-prefix-lines @ ['] print-c-prefix-line list-map ;
249:
1.61 anton 250: : write-c-prefix-line ( c-addr u -- )
251: c-source-file-id @ dup if
252: write-line throw
253: else
254: drop 2drop
255: then ;
1.60 pazsan 256:
1.61 anton 257: : save-c-prefix-line1 ( c-addr u -- )
258: 2dup write-c-prefix-line
1.6 anton 259: align here 0 , c-prefix-lines-end list-append ( c-addr u )
260: longstring, ;
261:
1.61 anton 262: defer save-c-prefix-line ( c-addr u -- )
263: ' save-c-prefix-line1 is save-c-prefix-line
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:
1.62 pazsan 291: \ call types
292: 0
293: const+ c-func
294: const+ c-val
295: const+ c-var
296: drop
297:
298: : libcc-type ( c-addr u -- u2 )
299: libcc-types search-wordlist 0= -13 and throw execute ;
300:
301: : parse-libcc-type ( "libcc-type" -- u ) parse-name libcc-type ;
1.2 anton 302:
1.62 pazsan 303: : parse-return-type ( "libcc-type" -- u )
304: parse-libcc-type dup 0< -32 and throw ;
305:
306: : parse-function-types ( "{libcc-type}" "--" "libcc-type" -- addr )
307: c-func c, here
308: dup 2 chars allot here begin
1.2 anton 309: parse-libcc-type dup 0>= while
310: c,
311: repeat
1.3 anton 312: drop here swap - over char+ c!
1.62 pazsan 313: parse-return-type swap c! ;
314:
315: : parse-value-type ( "{--}" "libcc-type" -- addr )
316: c-val c, here
317: parse-libcc-type dup 0< if drop parse-return-type then
318: c, 0 c, ;
319:
320: : parse-variable-type ( -- addr )
321: c-var c, here
322: s" a" libcc-type c, 0 c, ;
1.2 anton 323:
324: : type-letter ( n -- c )
1.52 pazsan 325: chars s" nadrfv" drop + c@ ;
1.2 anton 326:
327: \ count-stacks
328:
329: : count-stacks-n ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
330: 1+ ;
331:
1.5 anton 332: : count-stacks-a ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
1.2 anton 333: 1+ ;
334:
335: : count-stacks-d ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
336: 2 + ;
337:
338: : count-stacks-r ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
339: swap 1+ swap ;
340:
341: : count-stacks-func ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
342: 1+ ;
343:
344: : count-stacks-void ( fp-change1 sp-change1 -- fp-change2 sp-change2 )
345: ;
346:
347: create count-stacks-types
348: ' count-stacks-n ,
1.5 anton 349: ' count-stacks-a ,
1.2 anton 350: ' count-stacks-d ,
351: ' count-stacks-r ,
352: ' count-stacks-func ,
353: ' count-stacks-void ,
354:
355: : count-stacks ( pars -- fp-change sp-change )
356: \ pars is an addr u pair
357: 0 0 2swap over + swap u+do
1.3 anton 358: i c@ cells count-stacks-types + @ execute
1.2 anton 359: loop ;
360:
361: \ gen-pars
362:
363: : gen-par-n ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.5 anton 364: ." sp[" 1- dup .nb ." ]" ;
1.2 anton 365:
1.5 anton 366: : gen-par-a ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.2 anton 367: ." (void *)(" gen-par-n ." )" ;
368:
369: : gen-par-d ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.4 anton 370: ." gforth_d2ll(" gen-par-n ." ," gen-par-n ." )" ;
1.2 anton 371:
372: : gen-par-r ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.3 anton 373: swap 1- tuck ." fp[" .nb ." ]" ;
1.2 anton 374:
375: : gen-par-func ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
1.5 anton 376: gen-par-a ;
1.2 anton 377:
378: : gen-par-void ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 )
379: -32 throw ;
380:
381: create gen-par-types
382: ' gen-par-n ,
1.5 anton 383: ' gen-par-a ,
1.2 anton 384: ' gen-par-d ,
385: ' gen-par-r ,
386: ' gen-par-func ,
387: ' gen-par-void ,
388:
389: : gen-par ( fp-depth1 sp-depth1 partype -- fp-depth2 sp-depth2 )
1.3 anton 390: cells gen-par-types + @ execute ;
1.2 anton 391:
392: \ the call itself
393:
1.62 pazsan 394: : gen-wrapped-func { d: pars d: c-name fp-change1 sp-change1 -- }
1.2 anton 395: c-name type ." ("
1.3 anton 396: fp-change1 sp-change1 pars over + swap u+do
1.2 anton 397: i c@ gen-par
398: i 1+ i' < if
399: ." ,"
400: endif
401: loop
402: 2drop ." )" ;
403:
1.62 pazsan 404: : gen-wrapped-const { d: pars d: c-name fp-change1 sp-change1 -- }
405: ." (" c-name type ." )" ;
406:
407: : gen-wrapped-var { d: pars d: c-name fp-change1 sp-change1 -- }
408: ." &(" c-name type ." )" ;
409:
410: create gen-call-types
411: ' gen-wrapped-func ,
412: ' gen-wrapped-const ,
413: ' gen-wrapped-var ,
414:
415: : gen-wrapped-call ( pars c-name fp-change1 sp-change1 -- )
416: 5 pick 3 chars - c@ cells gen-call-types + @ execute ;
417:
1.2 anton 418: \ calls for various kinds of return values
419:
420: : gen-wrapped-void ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
421: 2dup 2>r gen-wrapped-call 2r> ;
422:
1.3 anton 423: : gen-wrapped-n ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
1.5 anton 424: 2dup gen-par-n 2>r ." =" gen-wrapped-call 2r> ;
1.3 anton 425:
1.5 anton 426: : gen-wrapped-a ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
427: 2dup gen-par-n 2>r ." =(Cell)" gen-wrapped-call 2r> ;
1.3 anton 428:
429: : gen-wrapped-d ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
430: ." gforth_ll2d(" gen-wrapped-void
1.5 anton 431: ." ," gen-par-n ." ," gen-par-n ." )" ;
1.3 anton 432:
433: : gen-wrapped-r ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
1.30 anton 434: 2dup gen-par-r 2>r ." =" gen-wrapped-call 2r> ;
1.3 anton 435:
436: : gen-wrapped-func ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
1.5 anton 437: gen-wrapped-a ;
1.3 anton 438:
1.2 anton 439: create gen-wrapped-types
440: ' gen-wrapped-n ,
1.5 anton 441: ' gen-wrapped-a ,
1.2 anton 442: ' gen-wrapped-d ,
443: ' gen-wrapped-r ,
444: ' gen-wrapped-func ,
445: ' gen-wrapped-void ,
446:
447: : gen-wrapped-stmt ( pars c-name fp-change1 sp-change1 ret -- fp-change sp-change )
1.3 anton 448: cells gen-wrapped-types + @ execute ;
1.2 anton 449:
1.10 anton 450: : wrapper-function-name ( addr -- c-addr u )
451: \ addr points to the return type index of a c-function descriptor
452: count { r-type } count { d: pars }
453: pars + count { d: c-name }
454: s" gforth_c_" { d: prefix }
455: prefix nip c-name nip + pars nip + 3 + { u }
456: u allocate throw { c-addr }
457: c-addr u
458: prefix front-string c-name front-string '_ front-char
459: pars bounds u+do
460: i c@ type-letter front-char
461: loop
462: '_ front-char r-type type-letter front-char assert( dup 0= )
463: 2drop c-addr u ;
464:
1.2 anton 465: : gen-wrapper-function ( addr -- )
466: \ addr points to the return type index of a c-function descriptor
1.10 anton 467: dup { descriptor }
1.13 anton 468: count { ret } count 2dup { d: pars } chars + count { d: c-name }
1.70 ! pazsan 469: ." void "
! 470: [ lib-suffix s" .la" str= [IF] ] lib-modulename 2@ type ." _LTX_" [ [THEN] ]
! 471: descriptor wrapper-function-name 2dup type drop free throw
1.54 pazsan 472: .\" (GFORTH_ARGS)\n"
1.4 anton 473: .\" {\n Cell MAYBE_UNUSED *sp = gforth_SP;\n Float MAYBE_UNUSED *fp = gforth_FP;\n "
1.2 anton 474: pars c-name 2over count-stacks ret gen-wrapped-stmt .\" ;\n"
475: ?dup-if
1.3 anton 476: ." gforth_SP = sp+" .nb .\" ;\n"
1.2 anton 477: endif
478: ?dup-if
1.3 anton 479: ." gforth_FP = fp+" .nb .\" ;\n"
1.2 anton 480: endif
1.3 anton 481: .\" }\n" ;
1.2 anton 482:
1.40 anton 483: : scan-back { c-addr u1 c -- c-addr u2 }
484: \ the last occurence of c in c-addr u1 is at u2-1; if it does not
485: \ occur, u2=0.
486: c-addr 1- c-addr u1 + 1- u-do
487: i c@ c = if
488: c-addr i over - 1+ unloop exit endif
489: 1 -loop
490: c-addr 0 ;
491:
492: : dirname ( c-addr1 u1 -- c-addr2 u2 )
493: \ directory name of the file name c-addr1 u1, including the final "/".
494: '/ scan-back ;
495:
496: : basename ( c-addr1 u1 -- c-addr2 u2 )
497: \ file name without directory component
498: 2dup dirname nip /string ;
1.16 anton 499:
1.15 anton 500: : gen-filename ( x -- c-addr u )
1.35 anton 501: \ generates a file basename for lib-handle-addr X
1.16 anton 502: 0 <<# ['] #s $10 base-execute #>
1.35 anton 503: s" gforth_c_" 2swap s+ #>> ;
504:
1.40 anton 505: : libcc-named-dir ( -- c-addr u )
1.43 anton 506: libcc-named-dir-v 2@ ;
1.40 anton 507:
508: : libcc-tmp-dir ( -- c-addr u )
1.41 anton 509: s" ~/.gforth/libcc-tmp/" ;
1.40 anton 510:
511: : prepend-dirname ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 )
1.41 anton 512: 2over s+ 2swap drop free throw ;
1.35 anton 513:
1.42 anton 514: : open-wrappers ( -- addr|0 )
1.70 ! pazsan 515: lib-filename 2@ lib-suffix s+
1.42 anton 516: 2dup libcc-named-dir string-prefix? if ( c-addr u )
517: \ see if we can open it in the path
518: libcc-named-dir nip /string
519: libcc-path open-path-file if
520: 0 exit endif
521: ( wfile-id c-addr2 u2 ) rot close-file throw save-mem ( c-addr2 u2 )
522: endif
523: \ 2dup cr type
524: 2dup open-lib >r
525: drop free throw r> ;
526:
1.39 anton 527: : c-library-name-setup ( c-addr u -- )
1.35 anton 528: assert( c-source-file-id @ 0= )
1.40 anton 529: { d: filename }
1.37 anton 530: here 0 , lib-handle-addr ! filename lib-filename 2!
1.61 anton 531: filename basename lib-modulename 2!
532: ['] write-c-prefix-line is save-c-prefix-line ;
1.39 anton 533:
534: : c-library-name-create ( -- )
535: lib-filename 2@ s" .c" s+ 2dup w/o create-file throw
1.61 anton 536: c-source-file-id !
537: drop free throw ;
1.39 anton 538:
1.40 anton 539: : c-named-library-name ( c-addr u -- )
1.39 anton 540: \ set up filenames for a (possibly new) library; c-addr u is the
541: \ basename of the library
1.40 anton 542: libcc-named-dir prepend-dirname c-library-name-setup
1.37 anton 543: open-wrappers dup if
544: lib-handle-addr @ !
545: else
1.56 anton 546: libcc-named-dir $1ff mkdir-parents drop
1.39 anton 547: drop c-library-name-create
1.61 anton 548: c-prefix-lines @ ['] print-c-prefix-line \ first line only
549: c-source-file-id @ outfile-execute
1.37 anton 550: endif ;
551:
1.40 anton 552: : c-tmp-library-name ( c-addr u -- )
1.39 anton 553: \ set up filenames for a new library; c-addr u is the basename of
554: \ the library
1.56 anton 555: libcc-tmp-dir 2dup $1ff mkdir-parents drop
1.61 anton 556: prepend-dirname c-library-name-setup c-library-name-create
557: ['] print-c-prefix-lines c-source-file-id @ outfile-execute ;
1.39 anton 558:
1.37 anton 559: : lib-handle ( -- addr )
560: lib-handle-addr @ @ ;
1.15 anton 561:
1.12 anton 562: : init-c-source-file ( -- )
1.37 anton 563: lib-handle 0= if
564: c-source-file-id @ 0= if
1.40 anton 565: here gen-filename c-tmp-library-name
1.37 anton 566: endif
1.12 anton 567: endif ;
1.11 anton 568:
569: : c-source-file ( -- file-id )
1.12 anton 570: c-source-file-id @ assert( dup ) ;
1.11 anton 571:
1.37 anton 572: : notype-execute ( ... xt -- ... )
573: what's type { oldtype } try
574: ['] 2drop is type execute 0
575: restore
576: oldtype is type
577: endtry
578: throw ;
579:
580: : c-source-file-execute ( ... xt -- ... )
581: \ direct the output of xt to c-source-file, or nothing
582: lib-handle if
583: notype-execute
584: else
585: c-source-file outfile-execute
586: endif ;
587:
1.24 anton 588: : .lib-error ( -- )
589: [ifdef] lib-error
590: ['] cr stderr outfile-execute
1.31 anton 591: lib-error ['] type stderr outfile-execute
1.24 anton 592: [then] ;
1.23 anton 593:
1.33 anton 594: DEFER compile-wrapper-function ( -- )
1.35 anton 595: : compile-wrapper-function1 ( -- )
1.37 anton 596: lib-handle 0= if
597: c-source-file close-file throw
598: 0 c-source-file-id !
1.64 dvdkhlng 599: [ libtool-command s" --silent --tag=CC --mode=compile " s+
1.58 pazsan 600: libtool-cc append s" -I '" append
601: s" includedir" getenv append s" '" append ] sliteral
1.37 anton 602: s" -O -c " s+ lib-filename 2@ append s" .c -o " append
603: lib-filename 2@ append s" .lo" append ( c-addr u )
1.55 pazsan 604: \ 2dup type cr
1.37 anton 605: 2dup system drop free throw $? abort" libtool compile failed"
1.64 dvdkhlng 606: [ libtool-command s" --silent --tag=CC --mode=link " s+
1.55 pazsan 607: libtool-cc append libtool-flags append s" -module -rpath " s+ ] sliteral
1.49 anton 608: lib-filename 2@ dirname replace-rpath s+ s" " append
1.37 anton 609: lib-filename 2@ append s" .lo -o " append
610: lib-filename 2@ append s" .la" append ( c-addr u )
1.59 pazsan 611: c-libs 2@ append
1.47 pazsan 612: \ 2dup type cr
1.37 anton 613: 2dup system drop free throw $? abort" libtool link failed"
614: open-wrappers dup 0= if
615: .lib-error true abort" open-lib failed"
616: endif
617: ( lib-handle ) lib-handle-addr @ !
1.23 anton 618: endif
1.35 anton 619: lib-filename 2@ drop free throw 0 0 lib-filename 2! ;
620: ' compile-wrapper-function1 IS compile-wrapper-function
1.5 anton 621: \ s" ar rcs xxx.a xxx.o" system
622: \ $? abort" ar generated error" ;
623:
1.12 anton 624: : link-wrapper-function { cff -- sym }
625: cff cff-rtype wrapper-function-name { d: wrapper-name }
1.23 anton 626: wrapper-name cff cff-lha @ @ assert( dup ) lib-sym dup 0= if
1.24 anton 627: .lib-error -&32 throw
1.23 anton 628: endif
1.10 anton 629: wrapper-name drop free throw ;
1.8 anton 630:
1.62 pazsan 631: : c-function-ft ( xt-defr xt-cfr xt-parse "c-name" "type signature" -- )
1.8 anton 632: \ build time/first time action for c-function
1.62 pazsan 633: { xt-parse-types } init-c-source-file
1.12 anton 634: noname create 2, lib-handle-addr @ ,
1.2 anton 635: parse-name { d: c-name }
1.62 pazsan 636: xt-parse-types execute c-name string,
1.37 anton 637: ['] gen-wrapper-function c-source-file-execute
1.8 anton 638: does> ( ... -- ... )
1.10 anton 639: dup 2@ { xt-defer xt-cfr }
1.12 anton 640: dup cff-lha @ @ 0= if
641: compile-wrapper-function
642: endif
643: link-wrapper-function xt-cfr >body !
1.8 anton 644: xt-cfr xt-defer defer!
645: xt-cfr execute ;
646:
647: : c-function-rt ( -- )
648: \ run-time definition for c function; addr is the address where
649: \ the sym should be stored
650: noname create 0 ,
1.2 anton 651: does> ( ... -- ... )
652: @ call-c ;
653:
1.62 pazsan 654: : (c-function) ( xt-parse "forth-name" "c-name" "{stack effect}" -- )
655: { xt-parse-types } defer lastxt dup c-function-rt
656: lastxt xt-parse-types c-function-ft
657: lastxt swap defer! ;
658:
659: : c-function ( "forth-name" "c-name" "@{type@}" "---" "type" -- ) \ gforth
1.17 anton 660: \G Define a Forth word @i{forth-name}. @i{Forth-name} has the
661: \G specified stack effect and calls the C function @code{c-name}.
1.62 pazsan 662: ['] parse-function-types (c-function) ;
663:
1.68 pazsan 664: : c-value ( "forth-name" "c-name" "---" "type" -- ) \ gforth
1.62 pazsan 665: \G Define a Forth word @i{forth-name}. @i{Forth-name} has the
666: \G specified stack effect and gives the C value of @code{c-name}.
667: ['] parse-value-type (c-function) ;
668:
669: : c-variable ( "forth-name" "c-name" -- ) \ gforth
670: \G Define a Forth word @i{forth-name}. @i{Forth-name} returns the
671: \G address of @code{c-name}.
672: ['] parse-variable-type (c-function) ;
1.33 anton 673:
1.53 anton 674: : clear-libs ( -- ) \ gforth
1.33 anton 675: \G Clear the list of libs
676: c-source-file-id @ if
677: compile-wrapper-function
678: endif
1.59 pazsan 679: 0. c-libs 2! ;
1.33 anton 680: clear-libs
1.35 anton 681:
682: : c-library-incomplete ( -- )
683: true abort" Called function of unfinished named C library" ;
684:
685: : c-library-name ( c-addr u -- ) \ gforth
1.38 anton 686: \G Start a C library interface with name @i{c-addr u}.
1.35 anton 687: clear-libs
688: ['] c-library-incomplete is compile-wrapper-function
1.40 anton 689: c-named-library-name ;
1.35 anton 690:
691: : c-library ( "name" -- ) \ gforth
692: \G Parsing version of @code{c-library-name}
1.39 anton 693: parse-name save-mem c-library-name ;
1.35 anton 694:
1.38 anton 695: : end-c-library ( -- ) \ gforth
696: \G Finish and (if necessary) build the latest C library interface.
1.61 anton 697: ['] save-c-prefix-line1 is save-c-prefix-line
1.35 anton 698: ['] compile-wrapper-function1 is compile-wrapper-function
699: compile-wrapper-function1 ;
1.43 anton 700:
701: : init-libcc ( -- )
702: s" ~/.gforth/libcc-named/" libcc-named-dir-v 2!
1.66 pazsan 703: [IFDEF] $init
704: libcc-path $init
1.43 anton 705: libcc-named-dir libcc-path also-path
706: [ s" libccdir" getenv ] sliteral libcc-path also-path
1.45 pazsan 707: [THEN]
1.43 anton 708: ;
709:
710: init-libcc
711:
712: :noname ( -- )
713: defers 'cold
714: init-libcc ;
715: is 'cold
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