Commit | Line | Data |
a0d0e21e |
1 | /* dl_aix.xs |
2 | * |
3 | * Written: 8/31/94 by Wayne Scott (wscott@ichips.intel.com) |
4 | * |
5 | * All I did was take Jens-Uwe Mager's libdl emulation library for |
6 | * AIX and merged it with the dl_dlopen.xs file to create a dynamic library |
7 | * package that works for AIX. |
8 | * |
9 | * I did change all malloc's, free's, strdup's, calloc's to use the perl |
10 | * equilvant. I also removed some stuff we will not need. Call fini() |
11 | * on statup... It can probably be trimmed more. |
12 | */ |
13 | |
14 | /* |
15 | * @(#)dlfcn.c 1.5 revision of 93/02/14 20:14:17 |
16 | * This is an unpublished work copyright (c) 1992 Helios Software GmbH |
17 | * 3000 Hannover 1, Germany |
18 | */ |
19 | #include "EXTERN.h" |
20 | #include "perl.h" |
21 | #include "XSUB.h" |
22 | |
23 | #include <stdio.h> |
24 | #include <errno.h> |
25 | #include <string.h> |
26 | #include <stdlib.h> |
27 | #include <sys/types.h> |
28 | #include <sys/ldr.h> |
29 | #include <a.out.h> |
30 | #include <ldfcn.h> |
31 | |
ee580363 |
32 | /* |
33 | * AIX 4.3 does remove some useful definitions from ldfcn.h. Define |
34 | * these here to compensate for that lossage. |
35 | */ |
36 | #ifndef BEGINNING |
37 | # define BEGINNING SEEK_SET |
38 | #endif |
39 | #ifndef FSEEK |
40 | # define FSEEK(ldptr,o,p) fseek(IOPTR(ldptr),(p==BEGINNING)?(OFFSET(ldptr) +o):o,p) |
41 | #endif |
42 | #ifndef FREAD |
43 | # define FREAD(p,s,n,ldptr) fread(p,s,n,IOPTR(ldptr)) |
44 | #endif |
45 | |
1553ab04 |
46 | /* If using PerlIO, redefine these macros from <ldfcn.h> */ |
47 | #ifdef USE_PERLIO |
48 | #define FSEEK(ldptr,o,p) PerlIO_seek(IOPTR(ldptr),(p==BEGINNING)?(OFFSET(ldptr)+o):o,p) |
49 | #define FREAD(p,s,n,ldptr) PerlIO_read(IOPTR(ldptr),p,s*n) |
50 | #endif |
51 | |
a0d0e21e |
52 | /* |
53 | * We simulate dlopen() et al. through a call to load. Because AIX has |
54 | * no call to find an exported symbol we read the loader section of the |
55 | * loaded module and build a list of exported symbols and their virtual |
56 | * address. |
57 | */ |
58 | |
59 | typedef struct { |
60 | char *name; /* the symbols's name */ |
61 | void *addr; /* its relocated virtual address */ |
62 | } Export, *ExportPtr; |
63 | |
64 | /* |
65 | * The void * handle returned from dlopen is actually a ModulePtr. |
66 | */ |
67 | typedef struct Module { |
68 | struct Module *next; |
69 | char *name; /* module name for refcounting */ |
70 | int refCnt; /* the number of references */ |
71 | void *entry; /* entry point from load */ |
72 | int nExports; /* the number of exports found */ |
73 | ExportPtr exports; /* the array of exports */ |
74 | } Module, *ModulePtr; |
75 | |
76 | /* |
77 | * We keep a list of all loaded modules to be able to call the fini |
78 | * handlers at atexit() time. |
79 | */ |
80 | static ModulePtr modList; |
81 | |
82 | /* |
83 | * The last error from one of the dl* routines is kept in static |
84 | * variables here. Each error is returned only once to the caller. |
85 | */ |
86 | static char errbuf[BUFSIZ]; |
87 | static int errvalid; |
88 | |
89 | static void caterr(char *); |
90 | static int readExports(ModulePtr); |
91 | static void terminate(void); |
92 | static void *findMain(void); |
93 | |
ce637636 |
94 | static char *strerror_failed = "(strerror failed)"; |
95 | static char *strerror_r_failed = "(strerror_r failed)"; |
96 | |
fd206186 |
97 | char *strerrorcat(char *str, int err) { |
ce637636 |
98 | int strsiz = strlen(str); |
99 | int msgsiz; |
100 | char *msg; |
101 | |
102 | #ifdef USE_THREADS |
103 | char *buf = malloc(BUFSIZ); |
104 | |
105 | if (buf == 0) |
106 | return 0; |
107 | if (strerror_r(err, buf, sizeof(buf)) == 0) |
108 | msg = buf; |
109 | else |
110 | msg = strerror_r_failed; |
111 | msgsiz = strlen(msg); |
112 | if (strsiz + msgsiz < BUFSIZ) |
113 | strcat(str, msg); |
114 | free(buf); |
115 | #else |
116 | if ((msg = strerror(err)) == 0) |
117 | msg = strerror_failed; |
118 | msgsiz = strlen(msg); /* Note msg = buf and free() above. */ |
119 | if (strsiz + msgsiz < BUFSIZ) /* Do not move this after #endif. */ |
120 | strcat(str, msg); |
121 | #endif |
122 | |
fd206186 |
123 | return str; |
124 | } |
ce637636 |
125 | |
fd206186 |
126 | char *strerrorcpy(char *str, int err) { |
ce637636 |
127 | int msgsiz; |
128 | char *msg; |
129 | |
130 | #ifdef USE_THREADS |
131 | char *buf = malloc(BUFSIZ); |
132 | |
133 | if (buf == 0) |
134 | return 0; |
135 | if (strerror_r(err, buf, sizeof(buf)) == 0) |
136 | msg = buf; |
137 | else |
138 | msg = strerror_r_failed; |
139 | msgsiz = strlen(msg); |
140 | if (msgsiz < BUFSIZ) |
141 | strcpy(str, msg); |
142 | free(buf); |
143 | #else |
144 | if ((msg = strerror(err)) == 0) |
145 | msg = strerror_failed; |
146 | msgsiz = strlen(msg); /* Note msg = buf and free() above. */ |
147 | if (msgsiz < BUFSIZ) /* Do not move this after #endif. */ |
148 | strcpy(str, msg); |
149 | #endif |
150 | |
fd206186 |
151 | return str; |
152 | } |
a0d0e21e |
153 | |
154 | /* ARGSUSED */ |
155 | void *dlopen(char *path, int mode) |
156 | { |
157 | register ModulePtr mp; |
158 | static void *mainModule; |
159 | |
160 | /* |
161 | * Upon the first call register a terminate handler that will |
162 | * close all libraries. Also get a reference to the main module |
163 | * for use with loadbind. |
164 | */ |
165 | if (!mainModule) { |
166 | if ((mainModule = findMain()) == NULL) |
167 | return NULL; |
168 | atexit(terminate); |
169 | } |
170 | /* |
171 | * Scan the list of modules if have the module already loaded. |
172 | */ |
173 | for (mp = modList; mp; mp = mp->next) |
174 | if (strcmp(mp->name, path) == 0) { |
175 | mp->refCnt++; |
176 | return mp; |
177 | } |
178 | Newz(1000,mp,1,Module); |
179 | if (mp == NULL) { |
180 | errvalid++; |
181 | strcpy(errbuf, "Newz: "); |
fd206186 |
182 | strerrorcat(errbuf, errno); |
a0d0e21e |
183 | return NULL; |
184 | } |
185 | |
186 | if ((mp->name = savepv(path)) == NULL) { |
187 | errvalid++; |
188 | strcpy(errbuf, "savepv: "); |
fd206186 |
189 | strerrorcat(errbuf, errno); |
a0d0e21e |
190 | safefree(mp); |
191 | return NULL; |
192 | } |
193 | /* |
194 | * load should be declared load(const char *...). Thus we |
195 | * cast the path to a normal char *. Ugly. |
196 | */ |
197 | if ((mp->entry = (void *)load((char *)path, L_NOAUTODEFER, NULL)) == NULL) { |
198 | safefree(mp->name); |
199 | safefree(mp); |
200 | errvalid++; |
201 | strcpy(errbuf, "dlopen: "); |
202 | strcat(errbuf, path); |
203 | strcat(errbuf, ": "); |
204 | /* |
205 | * If AIX says the file is not executable, the error |
206 | * can be further described by querying the loader about |
207 | * the last error. |
208 | */ |
209 | if (errno == ENOEXEC) { |
210 | char *tmp[BUFSIZ/sizeof(char *)]; |
211 | if (loadquery(L_GETMESSAGES, tmp, sizeof(tmp)) == -1) |
fd206186 |
212 | strerrorcpy(errbuf, errno); |
a0d0e21e |
213 | else { |
214 | char **p; |
215 | for (p = tmp; *p; p++) |
216 | caterr(*p); |
217 | } |
218 | } else |
fd206186 |
219 | strerrorcat(errbuf, errno); |
a0d0e21e |
220 | return NULL; |
221 | } |
222 | mp->refCnt = 1; |
223 | mp->next = modList; |
224 | modList = mp; |
225 | if (loadbind(0, mainModule, mp->entry) == -1) { |
226 | dlclose(mp); |
227 | errvalid++; |
228 | strcpy(errbuf, "loadbind: "); |
fd206186 |
229 | strerrorcat(errbuf, errno); |
a0d0e21e |
230 | return NULL; |
231 | } |
232 | if (readExports(mp) == -1) { |
233 | dlclose(mp); |
234 | return NULL; |
235 | } |
236 | return mp; |
237 | } |
238 | |
239 | /* |
240 | * Attempt to decipher an AIX loader error message and append it |
241 | * to our static error message buffer. |
242 | */ |
243 | static void caterr(char *s) |
244 | { |
245 | register char *p = s; |
246 | |
247 | while (*p >= '0' && *p <= '9') |
248 | p++; |
249 | switch(atoi(s)) { |
250 | case L_ERROR_TOOMANY: |
251 | strcat(errbuf, "to many errors"); |
252 | break; |
253 | case L_ERROR_NOLIB: |
254 | strcat(errbuf, "can't load library"); |
255 | strcat(errbuf, p); |
256 | break; |
257 | case L_ERROR_UNDEF: |
258 | strcat(errbuf, "can't find symbol"); |
259 | strcat(errbuf, p); |
260 | break; |
261 | case L_ERROR_RLDBAD: |
262 | strcat(errbuf, "bad RLD"); |
263 | strcat(errbuf, p); |
264 | break; |
265 | case L_ERROR_FORMAT: |
266 | strcat(errbuf, "bad exec format in"); |
267 | strcat(errbuf, p); |
268 | break; |
269 | case L_ERROR_ERRNO: |
fd206186 |
270 | strerrorcat(errbuf, atoi(++p)); |
a0d0e21e |
271 | break; |
272 | default: |
273 | strcat(errbuf, s); |
274 | break; |
275 | } |
276 | } |
277 | |
278 | void *dlsym(void *handle, const char *symbol) |
279 | { |
280 | register ModulePtr mp = (ModulePtr)handle; |
281 | register ExportPtr ep; |
282 | register int i; |
283 | |
284 | /* |
285 | * Could speed up search, but I assume that one assigns |
286 | * the result to function pointers anyways. |
287 | */ |
288 | for (ep = mp->exports, i = mp->nExports; i; i--, ep++) |
289 | if (strcmp(ep->name, symbol) == 0) |
290 | return ep->addr; |
291 | errvalid++; |
292 | strcpy(errbuf, "dlsym: undefined symbol "); |
293 | strcat(errbuf, symbol); |
294 | return NULL; |
295 | } |
296 | |
297 | char *dlerror(void) |
298 | { |
299 | if (errvalid) { |
300 | errvalid = 0; |
301 | return errbuf; |
302 | } |
303 | return NULL; |
304 | } |
305 | |
306 | int dlclose(void *handle) |
307 | { |
308 | register ModulePtr mp = (ModulePtr)handle; |
309 | int result; |
310 | register ModulePtr mp1; |
311 | |
312 | if (--mp->refCnt > 0) |
313 | return 0; |
314 | result = unload(mp->entry); |
315 | if (result == -1) { |
316 | errvalid++; |
fd206186 |
317 | strerrorcpy(errbuf, errno); |
a0d0e21e |
318 | } |
319 | if (mp->exports) { |
320 | register ExportPtr ep; |
321 | register int i; |
322 | for (ep = mp->exports, i = mp->nExports; i; i--, ep++) |
323 | if (ep->name) |
324 | safefree(ep->name); |
325 | safefree(mp->exports); |
326 | } |
327 | if (mp == modList) |
328 | modList = mp->next; |
329 | else { |
330 | for (mp1 = modList; mp1; mp1 = mp1->next) |
331 | if (mp1->next == mp) { |
332 | mp1->next = mp->next; |
333 | break; |
334 | } |
335 | } |
336 | safefree(mp->name); |
337 | safefree(mp); |
338 | return result; |
339 | } |
340 | |
341 | static void terminate(void) |
342 | { |
343 | while (modList) |
344 | dlclose(modList); |
345 | } |
346 | |
347 | /* Added by Wayne Scott |
348 | * This is needed because the ldopen system call calls |
349 | * calloc to allocated a block of date. The ldclose call calls free. |
350 | * Without this we get this system calloc and perl's free, resulting |
351 | * in a "Bad free" message. This way we always use perl's malloc. |
352 | */ |
353 | void *calloc(size_t ne, size_t sz) |
354 | { |
355 | void *out; |
356 | |
357 | out = (void *) safemalloc(ne*sz); |
358 | memzero(out, ne*sz); |
359 | return(out); |
360 | } |
361 | |
362 | /* |
363 | * Build the export table from the XCOFF .loader section. |
364 | */ |
365 | static int readExports(ModulePtr mp) |
366 | { |
367 | LDFILE *ldp = NULL; |
368 | SCNHDR sh; |
369 | LDHDR *lhp; |
370 | char *ldbuf; |
371 | LDSYM *ls; |
372 | int i; |
373 | ExportPtr ep; |
374 | |
375 | if ((ldp = ldopen(mp->name, ldp)) == NULL) { |
376 | struct ld_info *lp; |
377 | char *buf; |
378 | int size = 4*1024; |
379 | if (errno != ENOENT) { |
380 | errvalid++; |
381 | strcpy(errbuf, "readExports: "); |
fd206186 |
382 | strerrorcat(errbuf, errno); |
a0d0e21e |
383 | return -1; |
384 | } |
385 | /* |
386 | * The module might be loaded due to the LIBPATH |
387 | * environment variable. Search for the loaded |
388 | * module using L_GETINFO. |
389 | */ |
390 | if ((buf = safemalloc(size)) == NULL) { |
391 | errvalid++; |
392 | strcpy(errbuf, "readExports: "); |
fd206186 |
393 | strerrorcat(errbuf, errno); |
a0d0e21e |
394 | return -1; |
395 | } |
396 | while ((i = loadquery(L_GETINFO, buf, size)) == -1 && errno == ENOMEM) { |
397 | safefree(buf); |
398 | size += 4*1024; |
399 | if ((buf = safemalloc(size)) == NULL) { |
400 | errvalid++; |
401 | strcpy(errbuf, "readExports: "); |
fd206186 |
402 | strerrorcat(errbuf, errno); |
a0d0e21e |
403 | return -1; |
404 | } |
405 | } |
406 | if (i == -1) { |
407 | errvalid++; |
408 | strcpy(errbuf, "readExports: "); |
fd206186 |
409 | strerrorcat(errbuf, errno); |
a0d0e21e |
410 | safefree(buf); |
411 | return -1; |
412 | } |
413 | /* |
414 | * Traverse the list of loaded modules. The entry point |
415 | * returned by load() does actually point to the data |
416 | * segment origin. |
417 | */ |
418 | lp = (struct ld_info *)buf; |
419 | while (lp) { |
420 | if (lp->ldinfo_dataorg == mp->entry) { |
421 | ldp = ldopen(lp->ldinfo_filename, ldp); |
422 | break; |
423 | } |
424 | if (lp->ldinfo_next == 0) |
425 | lp = NULL; |
426 | else |
427 | lp = (struct ld_info *)((char *)lp + lp->ldinfo_next); |
428 | } |
429 | safefree(buf); |
430 | if (!ldp) { |
431 | errvalid++; |
432 | strcpy(errbuf, "readExports: "); |
fd206186 |
433 | strerrorcat(errbuf, errno); |
a0d0e21e |
434 | return -1; |
435 | } |
436 | } |
437 | if (TYPE(ldp) != U802TOCMAGIC) { |
438 | errvalid++; |
439 | strcpy(errbuf, "readExports: bad magic"); |
440 | while(ldclose(ldp) == FAILURE) |
441 | ; |
442 | return -1; |
443 | } |
444 | if (ldnshread(ldp, _LOADER, &sh) != SUCCESS) { |
445 | errvalid++; |
446 | strcpy(errbuf, "readExports: cannot read loader section header"); |
447 | while(ldclose(ldp) == FAILURE) |
448 | ; |
449 | return -1; |
450 | } |
451 | /* |
452 | * We read the complete loader section in one chunk, this makes |
453 | * finding long symbol names residing in the string table easier. |
454 | */ |
455 | if ((ldbuf = (char *)safemalloc(sh.s_size)) == NULL) { |
456 | errvalid++; |
457 | strcpy(errbuf, "readExports: "); |
fd206186 |
458 | strerrorcat(errbuf, errno); |
a0d0e21e |
459 | while(ldclose(ldp) == FAILURE) |
460 | ; |
461 | return -1; |
462 | } |
463 | if (FSEEK(ldp, sh.s_scnptr, BEGINNING) != OKFSEEK) { |
464 | errvalid++; |
465 | strcpy(errbuf, "readExports: cannot seek to loader section"); |
466 | safefree(ldbuf); |
467 | while(ldclose(ldp) == FAILURE) |
468 | ; |
469 | return -1; |
470 | } |
1553ab04 |
471 | /* This first case is a hack, since it assumes that the 3rd parameter to |
472 | FREAD is 1. See the redefinition of FREAD above to see how this works. */ |
473 | #ifdef USE_PERLIO |
474 | if (FREAD(ldbuf, sh.s_size, 1, ldp) != sh.s_size) { |
475 | #else |
a0d0e21e |
476 | if (FREAD(ldbuf, sh.s_size, 1, ldp) != 1) { |
1553ab04 |
477 | #endif |
a0d0e21e |
478 | errvalid++; |
479 | strcpy(errbuf, "readExports: cannot read loader section"); |
480 | safefree(ldbuf); |
481 | while(ldclose(ldp) == FAILURE) |
482 | ; |
483 | return -1; |
484 | } |
485 | lhp = (LDHDR *)ldbuf; |
486 | ls = (LDSYM *)(ldbuf+LDHDRSZ); |
487 | /* |
488 | * Count the number of exports to include in our export table. |
489 | */ |
490 | for (i = lhp->l_nsyms; i; i--, ls++) { |
491 | if (!LDR_EXPORT(*ls)) |
492 | continue; |
493 | mp->nExports++; |
494 | } |
495 | Newz(1001, mp->exports, mp->nExports, Export); |
496 | if (mp->exports == NULL) { |
497 | errvalid++; |
498 | strcpy(errbuf, "readExports: "); |
fd206186 |
499 | strerrorcat(errbuf, errno); |
a0d0e21e |
500 | safefree(ldbuf); |
501 | while(ldclose(ldp) == FAILURE) |
502 | ; |
503 | return -1; |
504 | } |
505 | /* |
506 | * Fill in the export table. All entries are relative to |
507 | * the entry point we got from load. |
508 | */ |
509 | ep = mp->exports; |
510 | ls = (LDSYM *)(ldbuf+LDHDRSZ); |
511 | for (i = lhp->l_nsyms; i; i--, ls++) { |
512 | char *symname; |
513 | if (!LDR_EXPORT(*ls)) |
514 | continue; |
515 | if (ls->l_zeroes == 0) |
516 | symname = ls->l_offset+lhp->l_stoff+ldbuf; |
517 | else |
518 | symname = ls->l_name; |
519 | ep->name = savepv(symname); |
520 | ep->addr = (void *)((unsigned long)mp->entry + ls->l_value); |
521 | ep++; |
522 | } |
523 | safefree(ldbuf); |
524 | while(ldclose(ldp) == FAILURE) |
525 | ; |
526 | return 0; |
527 | } |
528 | |
529 | /* |
530 | * Find the main modules entry point. This is used as export pointer |
531 | * for loadbind() to be able to resolve references to the main part. |
532 | */ |
533 | static void * findMain(void) |
534 | { |
535 | struct ld_info *lp; |
536 | char *buf; |
537 | int size = 4*1024; |
538 | int i; |
539 | void *ret; |
540 | |
541 | if ((buf = safemalloc(size)) == NULL) { |
542 | errvalid++; |
543 | strcpy(errbuf, "findMain: "); |
fd206186 |
544 | strerrorcat(errbuf, errno); |
a0d0e21e |
545 | return NULL; |
546 | } |
547 | while ((i = loadquery(L_GETINFO, buf, size)) == -1 && errno == ENOMEM) { |
548 | safefree(buf); |
549 | size += 4*1024; |
550 | if ((buf = safemalloc(size)) == NULL) { |
551 | errvalid++; |
552 | strcpy(errbuf, "findMain: "); |
fd206186 |
553 | strerrorcat(errbuf, errno); |
a0d0e21e |
554 | return NULL; |
555 | } |
556 | } |
557 | if (i == -1) { |
558 | errvalid++; |
559 | strcpy(errbuf, "findMain: "); |
fd206186 |
560 | strerrorcat(errbuf, errno); |
a0d0e21e |
561 | safefree(buf); |
562 | return NULL; |
563 | } |
564 | /* |
565 | * The first entry is the main module. The entry point |
566 | * returned by load() does actually point to the data |
567 | * segment origin. |
568 | */ |
569 | lp = (struct ld_info *)buf; |
570 | ret = lp->ldinfo_dataorg; |
571 | safefree(buf); |
572 | return ret; |
573 | } |
574 | |
575 | /* dl_dlopen.xs |
576 | * |
577 | * Platform: SunOS/Solaris, possibly others which use dlopen. |
578 | * Author: Paul Marquess (pmarquess@bfsec.bt.co.uk) |
579 | * Created: 10th July 1994 |
580 | * |
581 | * Modified: |
582 | * 15th July 1994 - Added code to explicitly save any error messages. |
583 | * 3rd August 1994 - Upgraded to v3 spec. |
584 | * 9th August 1994 - Changed to use IV |
585 | * 10th August 1994 - Tim Bunce: Added RTLD_LAZY, switchable debugging, |
586 | * basic FreeBSD support, removed ClearError |
587 | * |
588 | */ |
589 | |
590 | /* Porting notes: |
591 | |
592 | see dl_dlopen.xs |
593 | |
594 | */ |
595 | |
596 | #include "dlutils.c" /* SaveError() etc */ |
597 | |
598 | |
599 | static void |
cea2e8a9 |
600 | dl_private_init(pTHX) |
a0d0e21e |
601 | { |
cea2e8a9 |
602 | (void)dl_generic_private_init(aTHX); |
a0d0e21e |
603 | } |
604 | |
605 | MODULE = DynaLoader PACKAGE = DynaLoader |
606 | |
607 | BOOT: |
cea2e8a9 |
608 | (void)dl_private_init(aTHX); |
a0d0e21e |
609 | |
610 | |
611 | void * |
ff7f3c60 |
612 | dl_load_file(filename, flags=0) |
613 | char * filename |
614 | int flags |
a0d0e21e |
615 | CODE: |
ff7f3c60 |
616 | DLDEBUG(1,PerlIO_printf(PerlIO_stderr(), "dl_load_file(%s,%x):\n", filename,flags)); |
617 | if (flags & 0x01) |
cea2e8a9 |
618 | Perl_warn(aTHX_ "Can't make loaded symbols global on this platform while loading %s",filename); |
a0d0e21e |
619 | RETVAL = dlopen(filename, 1) ; |
760ac839 |
620 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), " libref=%x\n", RETVAL)); |
a0d0e21e |
621 | ST(0) = sv_newmortal() ; |
622 | if (RETVAL == NULL) |
cea2e8a9 |
623 | SaveError(aTHX_ "%s",dlerror()) ; |
a0d0e21e |
624 | else |
625 | sv_setiv( ST(0), (IV)RETVAL); |
626 | |
627 | |
628 | void * |
629 | dl_find_symbol(libhandle, symbolname) |
630 | void * libhandle |
631 | char * symbolname |
632 | CODE: |
760ac839 |
633 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), "dl_find_symbol(handle=%x, symbol=%s)\n", |
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634 | libhandle, symbolname)); |
635 | RETVAL = dlsym(libhandle, symbolname); |
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636 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), " symbolref = %x\n", RETVAL)); |
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637 | ST(0) = sv_newmortal() ; |
638 | if (RETVAL == NULL) |
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639 | SaveError(aTHX_ "%s",dlerror()) ; |
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640 | else |
641 | sv_setiv( ST(0), (IV)RETVAL); |
642 | |
643 | |
644 | void |
645 | dl_undef_symbols() |
646 | PPCODE: |
647 | |
648 | |
649 | |
650 | # These functions should not need changing on any platform: |
651 | |
652 | void |
653 | dl_install_xsub(perl_name, symref, filename="$Package") |
654 | char * perl_name |
655 | void * symref |
656 | char * filename |
657 | CODE: |
760ac839 |
658 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), "dl_install_xsub(name=%s, symref=%x)\n", |
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659 | perl_name, symref)); |
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660 | ST(0) = sv_2mortal(newRV((SV*)newXS(perl_name, |
661 | (void(*)(pTHX_ CV *))symref, |
662 | filename))); |
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663 | |
664 | |
665 | char * |
666 | dl_error() |
667 | CODE: |
668 | RETVAL = LastError ; |
669 | OUTPUT: |
670 | RETVAL |
671 | |
672 | # end. |