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16 | * This is an unpublished work copyright (c) 1992 Helios Software GmbH |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 | |
19e194ad |
23 | /* When building as a 64-bit binary on AIX, define this to get the |
24 | * correct structure definitions. Also determines the field-name |
25 | * macros and gates some logic in readEntries(). -- Steven N. Hirsch |
26 | * <hirschs@btv.ibm.com> */ |
27 | #ifdef USE_64_BIT_ALL |
28 | # define __XCOFF64__ |
29 | # define __XCOFF32__ |
30 | #endif |
31 | |
a0d0e21e |
32 | #include <stdio.h> |
33 | #include <errno.h> |
34 | #include <string.h> |
35 | #include <stdlib.h> |
36 | #include <sys/types.h> |
37 | #include <sys/ldr.h> |
38 | #include <a.out.h> |
39 | #include <ldfcn.h> |
40 | |
19e194ad |
41 | #ifdef USE_64_BIT_ALL |
42 | # define AIX_SCNHDR SCNHDR_64 |
43 | # define AIX_LDHDR LDHDR_64 |
44 | # define AIX_LDSYM LDSYM_64 |
45 | # define AIX_LDHDRSZ LDHDRSZ_64 |
46 | #else |
47 | # define AIX_SCNHDR SCNHDR |
48 | # define AIX_LDHDR LDHDR |
49 | # define AIX_LDSYM LDSYM |
50 | # define AIX_LDHDRSZ LDHDRSZ |
51 | #endif |
52 | |
4e774c84 |
53 | /* When using Perl extensions written in C++ the longer versions |
54 | * of load() and unload() from libC and libC_r need to be used, |
55 | * otherwise statics in the extensions won't get initialized right. |
56 | * -- Stephanie Beals <bealzy@us.ibm.com> */ |
c88be79f |
57 | #ifdef USE_libC /* The define comes, when it comes, from hints/aix.pl. */ |
58 | # define LOAD loadAndInit |
4e774c84 |
59 | # define UNLOAD terminateAndUnload |
c88be79f |
60 | # ifdef USE_load_h |
61 | # include <load.h> |
62 | # endif |
4e774c84 |
63 | #else |
64 | # define LOAD load |
65 | # define UNLOAD unload |
66 | #endif |
67 | |
ee580363 |
68 | /* |
69 | * AIX 4.3 does remove some useful definitions from ldfcn.h. Define |
70 | * these here to compensate for that lossage. |
71 | */ |
72 | #ifndef BEGINNING |
73 | # define BEGINNING SEEK_SET |
74 | #endif |
75 | #ifndef FSEEK |
76 | # define FSEEK(ldptr,o,p) fseek(IOPTR(ldptr),(p==BEGINNING)?(OFFSET(ldptr) +o):o,p) |
77 | #endif |
78 | #ifndef FREAD |
79 | # define FREAD(p,s,n,ldptr) fread(p,s,n,IOPTR(ldptr)) |
80 | #endif |
81 | |
1553ab04 |
82 | /* If using PerlIO, redefine these macros from <ldfcn.h> */ |
83 | #ifdef USE_PERLIO |
84 | #define FSEEK(ldptr,o,p) PerlIO_seek(IOPTR(ldptr),(p==BEGINNING)?(OFFSET(ldptr)+o):o,p) |
85 | #define FREAD(p,s,n,ldptr) PerlIO_read(IOPTR(ldptr),p,s*n) |
86 | #endif |
87 | |
a0d0e21e |
88 | /* |
89 | * We simulate dlopen() et al. through a call to load. Because AIX has |
90 | * no call to find an exported symbol we read the loader section of the |
91 | * loaded module and build a list of exported symbols and their virtual |
92 | * address. |
93 | */ |
94 | |
95 | typedef struct { |
96 | char *name; /* the symbols's name */ |
97 | void *addr; /* its relocated virtual address */ |
98 | } Export, *ExportPtr; |
99 | |
100 | /* |
101 | * The void * handle returned from dlopen is actually a ModulePtr. |
102 | */ |
103 | typedef struct Module { |
104 | struct Module *next; |
105 | char *name; /* module name for refcounting */ |
106 | int refCnt; /* the number of references */ |
107 | void *entry; /* entry point from load */ |
108 | int nExports; /* the number of exports found */ |
109 | ExportPtr exports; /* the array of exports */ |
110 | } Module, *ModulePtr; |
111 | |
112 | /* |
113 | * We keep a list of all loaded modules to be able to call the fini |
114 | * handlers at atexit() time. |
115 | */ |
549a6b10 |
116 | static ModulePtr modList; /* XXX threaded */ |
a0d0e21e |
117 | |
118 | /* |
119 | * The last error from one of the dl* routines is kept in static |
120 | * variables here. Each error is returned only once to the caller. |
121 | */ |
549a6b10 |
122 | static char errbuf[BUFSIZ]; /* XXX threaded */ |
123 | static int errvalid; /* XXX threaded */ |
a0d0e21e |
124 | |
125 | static void caterr(char *); |
126 | static int readExports(ModulePtr); |
127 | static void terminate(void); |
a0d0e21e |
128 | |
ce637636 |
129 | static char *strerror_failed = "(strerror failed)"; |
130 | static char *strerror_r_failed = "(strerror_r failed)"; |
131 | |
fd206186 |
132 | char *strerrorcat(char *str, int err) { |
ce637636 |
133 | int strsiz = strlen(str); |
134 | int msgsiz; |
135 | char *msg; |
136 | |
137 | #ifdef USE_THREADS |
138 | char *buf = malloc(BUFSIZ); |
139 | |
140 | if (buf == 0) |
141 | return 0; |
549a6b10 |
142 | if (strerror_r(err, buf, BUFSIZ) == 0) |
ce637636 |
143 | msg = buf; |
144 | else |
145 | msg = strerror_r_failed; |
146 | msgsiz = strlen(msg); |
147 | if (strsiz + msgsiz < BUFSIZ) |
148 | strcat(str, msg); |
149 | free(buf); |
150 | #else |
151 | if ((msg = strerror(err)) == 0) |
152 | msg = strerror_failed; |
153 | msgsiz = strlen(msg); /* Note msg = buf and free() above. */ |
154 | if (strsiz + msgsiz < BUFSIZ) /* Do not move this after #endif. */ |
155 | strcat(str, msg); |
156 | #endif |
157 | |
fd206186 |
158 | return str; |
159 | } |
ce637636 |
160 | |
fd206186 |
161 | char *strerrorcpy(char *str, int err) { |
ce637636 |
162 | int msgsiz; |
163 | char *msg; |
164 | |
165 | #ifdef USE_THREADS |
166 | char *buf = malloc(BUFSIZ); |
167 | |
168 | if (buf == 0) |
169 | return 0; |
549a6b10 |
170 | if (strerror_r(err, buf, BUFSIZ) == 0) |
ce637636 |
171 | msg = buf; |
172 | else |
173 | msg = strerror_r_failed; |
174 | msgsiz = strlen(msg); |
175 | if (msgsiz < BUFSIZ) |
176 | strcpy(str, msg); |
177 | free(buf); |
178 | #else |
179 | if ((msg = strerror(err)) == 0) |
180 | msg = strerror_failed; |
181 | msgsiz = strlen(msg); /* Note msg = buf and free() above. */ |
182 | if (msgsiz < BUFSIZ) /* Do not move this after #endif. */ |
183 | strcpy(str, msg); |
184 | #endif |
185 | |
fd206186 |
186 | return str; |
187 | } |
a0d0e21e |
188 | |
189 | /* ARGSUSED */ |
190 | void *dlopen(char *path, int mode) |
191 | { |
5b877257 |
192 | dTHX; |
a0d0e21e |
193 | register ModulePtr mp; |
549a6b10 |
194 | static int inited; /* XXX threaded */ |
a0d0e21e |
195 | |
196 | /* |
197 | * Upon the first call register a terminate handler that will |
f6b3007c |
198 | * close all libraries. |
a0d0e21e |
199 | */ |
f6b3007c |
200 | if (!inited) { |
201 | inited++; |
a0d0e21e |
202 | atexit(terminate); |
203 | } |
204 | /* |
205 | * Scan the list of modules if have the module already loaded. |
206 | */ |
207 | for (mp = modList; mp; mp = mp->next) |
208 | if (strcmp(mp->name, path) == 0) { |
209 | mp->refCnt++; |
210 | return mp; |
211 | } |
212 | Newz(1000,mp,1,Module); |
213 | if (mp == NULL) { |
214 | errvalid++; |
215 | strcpy(errbuf, "Newz: "); |
fd206186 |
216 | strerrorcat(errbuf, errno); |
a0d0e21e |
217 | return NULL; |
218 | } |
219 | |
220 | if ((mp->name = savepv(path)) == NULL) { |
221 | errvalid++; |
222 | strcpy(errbuf, "savepv: "); |
fd206186 |
223 | strerrorcat(errbuf, errno); |
a0d0e21e |
224 | safefree(mp); |
225 | return NULL; |
226 | } |
549a6b10 |
227 | |
a0d0e21e |
228 | /* |
229 | * load should be declared load(const char *...). Thus we |
230 | * cast the path to a normal char *. Ugly. |
231 | */ |
4e774c84 |
232 | if ((mp->entry = (void *)LOAD((char *)path, |
549a6b10 |
233 | #ifdef L_LIBPATH_EXEC |
234 | L_LIBPATH_EXEC | |
235 | #endif |
236 | L_NOAUTODEFER, |
237 | NULL)) == NULL) { |
238 | int saverrno = errno; |
239 | |
a0d0e21e |
240 | safefree(mp->name); |
241 | safefree(mp); |
242 | errvalid++; |
243 | strcpy(errbuf, "dlopen: "); |
244 | strcat(errbuf, path); |
245 | strcat(errbuf, ": "); |
246 | /* |
247 | * If AIX says the file is not executable, the error |
248 | * can be further described by querying the loader about |
249 | * the last error. |
250 | */ |
549a6b10 |
251 | if (saverrno == ENOEXEC) { |
252 | char *moreinfo[BUFSIZ/sizeof(char *)]; |
253 | if (loadquery(L_GETMESSAGES, moreinfo, sizeof(moreinfo)) == -1) |
254 | strerrorcpy(errbuf, saverrno); |
a0d0e21e |
255 | else { |
256 | char **p; |
549a6b10 |
257 | for (p = moreinfo; *p; p++) |
a0d0e21e |
258 | caterr(*p); |
259 | } |
260 | } else |
549a6b10 |
261 | strerrorcat(errbuf, saverrno); |
a0d0e21e |
262 | return NULL; |
263 | } |
264 | mp->refCnt = 1; |
265 | mp->next = modList; |
266 | modList = mp; |
f6b3007c |
267 | /* |
268 | * Assume anonymous exports come from the module this dlopen |
269 | * is linked into, that holds true as long as dlopen and all |
270 | * of the perl core are in the same shared object. |
271 | */ |
272 | if (loadbind(0, (void *)dlopen, mp->entry) == -1) { |
549a6b10 |
273 | int saverrno = errno; |
274 | |
a0d0e21e |
275 | dlclose(mp); |
276 | errvalid++; |
277 | strcpy(errbuf, "loadbind: "); |
549a6b10 |
278 | strerrorcat(errbuf, saverrno); |
a0d0e21e |
279 | return NULL; |
280 | } |
281 | if (readExports(mp) == -1) { |
282 | dlclose(mp); |
283 | return NULL; |
284 | } |
285 | return mp; |
286 | } |
287 | |
288 | /* |
289 | * Attempt to decipher an AIX loader error message and append it |
290 | * to our static error message buffer. |
291 | */ |
292 | static void caterr(char *s) |
293 | { |
294 | register char *p = s; |
295 | |
296 | while (*p >= '0' && *p <= '9') |
297 | p++; |
298 | switch(atoi(s)) { |
299 | case L_ERROR_TOOMANY: |
300 | strcat(errbuf, "to many errors"); |
301 | break; |
302 | case L_ERROR_NOLIB: |
303 | strcat(errbuf, "can't load library"); |
304 | strcat(errbuf, p); |
305 | break; |
306 | case L_ERROR_UNDEF: |
307 | strcat(errbuf, "can't find symbol"); |
308 | strcat(errbuf, p); |
309 | break; |
310 | case L_ERROR_RLDBAD: |
311 | strcat(errbuf, "bad RLD"); |
312 | strcat(errbuf, p); |
313 | break; |
314 | case L_ERROR_FORMAT: |
315 | strcat(errbuf, "bad exec format in"); |
316 | strcat(errbuf, p); |
317 | break; |
318 | case L_ERROR_ERRNO: |
fd206186 |
319 | strerrorcat(errbuf, atoi(++p)); |
a0d0e21e |
320 | break; |
321 | default: |
322 | strcat(errbuf, s); |
323 | break; |
324 | } |
325 | } |
326 | |
327 | void *dlsym(void *handle, const char *symbol) |
328 | { |
329 | register ModulePtr mp = (ModulePtr)handle; |
330 | register ExportPtr ep; |
331 | register int i; |
332 | |
333 | /* |
334 | * Could speed up search, but I assume that one assigns |
335 | * the result to function pointers anyways. |
336 | */ |
337 | for (ep = mp->exports, i = mp->nExports; i; i--, ep++) |
338 | if (strcmp(ep->name, symbol) == 0) |
339 | return ep->addr; |
340 | errvalid++; |
341 | strcpy(errbuf, "dlsym: undefined symbol "); |
342 | strcat(errbuf, symbol); |
343 | return NULL; |
344 | } |
345 | |
346 | char *dlerror(void) |
347 | { |
348 | if (errvalid) { |
349 | errvalid = 0; |
350 | return errbuf; |
351 | } |
352 | return NULL; |
353 | } |
354 | |
355 | int dlclose(void *handle) |
356 | { |
357 | register ModulePtr mp = (ModulePtr)handle; |
358 | int result; |
359 | register ModulePtr mp1; |
360 | |
361 | if (--mp->refCnt > 0) |
362 | return 0; |
4e774c84 |
363 | result = UNLOAD(mp->entry); |
a0d0e21e |
364 | if (result == -1) { |
365 | errvalid++; |
fd206186 |
366 | strerrorcpy(errbuf, errno); |
a0d0e21e |
367 | } |
368 | if (mp->exports) { |
369 | register ExportPtr ep; |
370 | register int i; |
371 | for (ep = mp->exports, i = mp->nExports; i; i--, ep++) |
372 | if (ep->name) |
373 | safefree(ep->name); |
374 | safefree(mp->exports); |
375 | } |
376 | if (mp == modList) |
377 | modList = mp->next; |
378 | else { |
379 | for (mp1 = modList; mp1; mp1 = mp1->next) |
380 | if (mp1->next == mp) { |
381 | mp1->next = mp->next; |
382 | break; |
383 | } |
384 | } |
385 | safefree(mp->name); |
386 | safefree(mp); |
387 | return result; |
388 | } |
389 | |
390 | static void terminate(void) |
391 | { |
392 | while (modList) |
393 | dlclose(modList); |
394 | } |
395 | |
396 | /* Added by Wayne Scott |
397 | * This is needed because the ldopen system call calls |
398 | * calloc to allocated a block of date. The ldclose call calls free. |
399 | * Without this we get this system calloc and perl's free, resulting |
400 | * in a "Bad free" message. This way we always use perl's malloc. |
401 | */ |
402 | void *calloc(size_t ne, size_t sz) |
403 | { |
404 | void *out; |
405 | |
406 | out = (void *) safemalloc(ne*sz); |
407 | memzero(out, ne*sz); |
408 | return(out); |
409 | } |
410 | |
411 | /* |
412 | * Build the export table from the XCOFF .loader section. |
413 | */ |
414 | static int readExports(ModulePtr mp) |
415 | { |
5b877257 |
416 | dTHX; |
a0d0e21e |
417 | LDFILE *ldp = NULL; |
19e194ad |
418 | AIX_SCNHDR sh; |
419 | AIX_LDHDR *lhp; |
a0d0e21e |
420 | char *ldbuf; |
19e194ad |
421 | AIX_LDSYM *ls; |
a0d0e21e |
422 | int i; |
423 | ExportPtr ep; |
424 | |
425 | if ((ldp = ldopen(mp->name, ldp)) == NULL) { |
426 | struct ld_info *lp; |
427 | char *buf; |
428 | int size = 4*1024; |
429 | if (errno != ENOENT) { |
430 | errvalid++; |
431 | strcpy(errbuf, "readExports: "); |
fd206186 |
432 | strerrorcat(errbuf, errno); |
a0d0e21e |
433 | return -1; |
434 | } |
435 | /* |
436 | * The module might be loaded due to the LIBPATH |
437 | * environment variable. Search for the loaded |
438 | * module using L_GETINFO. |
439 | */ |
440 | if ((buf = safemalloc(size)) == NULL) { |
441 | errvalid++; |
442 | strcpy(errbuf, "readExports: "); |
fd206186 |
443 | strerrorcat(errbuf, errno); |
a0d0e21e |
444 | return -1; |
445 | } |
446 | while ((i = loadquery(L_GETINFO, buf, size)) == -1 && errno == ENOMEM) { |
447 | safefree(buf); |
448 | size += 4*1024; |
449 | if ((buf = safemalloc(size)) == NULL) { |
450 | errvalid++; |
451 | strcpy(errbuf, "readExports: "); |
fd206186 |
452 | strerrorcat(errbuf, errno); |
a0d0e21e |
453 | return -1; |
454 | } |
455 | } |
456 | if (i == -1) { |
457 | errvalid++; |
458 | strcpy(errbuf, "readExports: "); |
fd206186 |
459 | strerrorcat(errbuf, errno); |
a0d0e21e |
460 | safefree(buf); |
461 | return -1; |
462 | } |
463 | /* |
464 | * Traverse the list of loaded modules. The entry point |
4e774c84 |
465 | * returned by LOAD() does actually point to the data |
a0d0e21e |
466 | * segment origin. |
467 | */ |
468 | lp = (struct ld_info *)buf; |
469 | while (lp) { |
470 | if (lp->ldinfo_dataorg == mp->entry) { |
471 | ldp = ldopen(lp->ldinfo_filename, ldp); |
472 | break; |
473 | } |
474 | if (lp->ldinfo_next == 0) |
475 | lp = NULL; |
476 | else |
477 | lp = (struct ld_info *)((char *)lp + lp->ldinfo_next); |
478 | } |
479 | safefree(buf); |
480 | if (!ldp) { |
481 | errvalid++; |
482 | strcpy(errbuf, "readExports: "); |
fd206186 |
483 | strerrorcat(errbuf, errno); |
a0d0e21e |
484 | return -1; |
485 | } |
486 | } |
19e194ad |
487 | #ifdef USE_64_BIT_ALL |
488 | if (TYPE(ldp) != U803XTOCMAGIC) { |
489 | #else |
a0d0e21e |
490 | if (TYPE(ldp) != U802TOCMAGIC) { |
19e194ad |
491 | #endif |
a0d0e21e |
492 | errvalid++; |
493 | strcpy(errbuf, "readExports: bad magic"); |
494 | while(ldclose(ldp) == FAILURE) |
495 | ; |
496 | return -1; |
497 | } |
498 | if (ldnshread(ldp, _LOADER, &sh) != SUCCESS) { |
499 | errvalid++; |
500 | strcpy(errbuf, "readExports: cannot read loader section header"); |
501 | while(ldclose(ldp) == FAILURE) |
502 | ; |
503 | return -1; |
504 | } |
505 | /* |
506 | * We read the complete loader section in one chunk, this makes |
507 | * finding long symbol names residing in the string table easier. |
508 | */ |
509 | if ((ldbuf = (char *)safemalloc(sh.s_size)) == NULL) { |
510 | errvalid++; |
511 | strcpy(errbuf, "readExports: "); |
fd206186 |
512 | strerrorcat(errbuf, errno); |
a0d0e21e |
513 | while(ldclose(ldp) == FAILURE) |
514 | ; |
515 | return -1; |
516 | } |
517 | if (FSEEK(ldp, sh.s_scnptr, BEGINNING) != OKFSEEK) { |
518 | errvalid++; |
519 | strcpy(errbuf, "readExports: cannot seek to loader section"); |
520 | safefree(ldbuf); |
521 | while(ldclose(ldp) == FAILURE) |
522 | ; |
523 | return -1; |
524 | } |
1553ab04 |
525 | /* This first case is a hack, since it assumes that the 3rd parameter to |
526 | FREAD is 1. See the redefinition of FREAD above to see how this works. */ |
527 | #ifdef USE_PERLIO |
528 | if (FREAD(ldbuf, sh.s_size, 1, ldp) != sh.s_size) { |
529 | #else |
a0d0e21e |
530 | if (FREAD(ldbuf, sh.s_size, 1, ldp) != 1) { |
1553ab04 |
531 | #endif |
a0d0e21e |
532 | errvalid++; |
533 | strcpy(errbuf, "readExports: cannot read loader section"); |
534 | safefree(ldbuf); |
535 | while(ldclose(ldp) == FAILURE) |
536 | ; |
537 | return -1; |
538 | } |
19e194ad |
539 | lhp = (AIX_LDHDR *)ldbuf; |
540 | ls = (AIX_LDSYM *)(ldbuf+AIX_LDHDRSZ); |
a0d0e21e |
541 | /* |
542 | * Count the number of exports to include in our export table. |
543 | */ |
544 | for (i = lhp->l_nsyms; i; i--, ls++) { |
545 | if (!LDR_EXPORT(*ls)) |
546 | continue; |
547 | mp->nExports++; |
548 | } |
549 | Newz(1001, mp->exports, mp->nExports, Export); |
550 | if (mp->exports == NULL) { |
551 | errvalid++; |
552 | strcpy(errbuf, "readExports: "); |
fd206186 |
553 | strerrorcat(errbuf, errno); |
a0d0e21e |
554 | safefree(ldbuf); |
555 | while(ldclose(ldp) == FAILURE) |
556 | ; |
557 | return -1; |
558 | } |
559 | /* |
560 | * Fill in the export table. All entries are relative to |
561 | * the entry point we got from load. |
562 | */ |
563 | ep = mp->exports; |
19e194ad |
564 | ls = (AIX_LDSYM *)(ldbuf+AIX_LDHDRSZ); |
a0d0e21e |
565 | for (i = lhp->l_nsyms; i; i--, ls++) { |
566 | char *symname; |
567 | if (!LDR_EXPORT(*ls)) |
568 | continue; |
19e194ad |
569 | #ifndef USE_64_BIT_ALL |
a0d0e21e |
570 | if (ls->l_zeroes == 0) |
19e194ad |
571 | #endif |
a0d0e21e |
572 | symname = ls->l_offset+lhp->l_stoff+ldbuf; |
19e194ad |
573 | #ifndef USE_64_BIT_ALL |
a0d0e21e |
574 | else |
575 | symname = ls->l_name; |
19e194ad |
576 | #endif |
a0d0e21e |
577 | ep->name = savepv(symname); |
578 | ep->addr = (void *)((unsigned long)mp->entry + ls->l_value); |
579 | ep++; |
580 | } |
581 | safefree(ldbuf); |
582 | while(ldclose(ldp) == FAILURE) |
583 | ; |
584 | return 0; |
585 | } |
586 | |
a0d0e21e |
587 | /* dl_dlopen.xs |
588 | * |
589 | * Platform: SunOS/Solaris, possibly others which use dlopen. |
0536e0eb |
590 | * Author: Paul Marquess (Paul.Marquess@btinternet.com) |
a0d0e21e |
591 | * Created: 10th July 1994 |
592 | * |
593 | * Modified: |
594 | * 15th July 1994 - Added code to explicitly save any error messages. |
595 | * 3rd August 1994 - Upgraded to v3 spec. |
596 | * 9th August 1994 - Changed to use IV |
597 | * 10th August 1994 - Tim Bunce: Added RTLD_LAZY, switchable debugging, |
598 | * basic FreeBSD support, removed ClearError |
599 | * |
600 | */ |
601 | |
602 | /* Porting notes: |
603 | |
604 | see dl_dlopen.xs |
605 | |
606 | */ |
607 | |
608 | #include "dlutils.c" /* SaveError() etc */ |
609 | |
610 | |
611 | static void |
cea2e8a9 |
612 | dl_private_init(pTHX) |
a0d0e21e |
613 | { |
cea2e8a9 |
614 | (void)dl_generic_private_init(aTHX); |
a0d0e21e |
615 | } |
616 | |
617 | MODULE = DynaLoader PACKAGE = DynaLoader |
618 | |
619 | BOOT: |
cea2e8a9 |
620 | (void)dl_private_init(aTHX); |
a0d0e21e |
621 | |
622 | |
623 | void * |
ff7f3c60 |
624 | dl_load_file(filename, flags=0) |
625 | char * filename |
626 | int flags |
a0d0e21e |
627 | CODE: |
bf49b057 |
628 | DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s,%x):\n", filename,flags)); |
ff7f3c60 |
629 | if (flags & 0x01) |
cea2e8a9 |
630 | Perl_warn(aTHX_ "Can't make loaded symbols global on this platform while loading %s",filename); |
a0d0e21e |
631 | RETVAL = dlopen(filename, 1) ; |
bf49b057 |
632 | DLDEBUG(2,PerlIO_printf(Perl_debug_log, " libref=%x\n", RETVAL)); |
a0d0e21e |
633 | ST(0) = sv_newmortal() ; |
634 | if (RETVAL == NULL) |
cea2e8a9 |
635 | SaveError(aTHX_ "%s",dlerror()) ; |
a0d0e21e |
636 | else |
3175b8cd |
637 | sv_setiv( ST(0), PTR2IV(RETVAL) ); |
a0d0e21e |
638 | |
639 | |
640 | void * |
641 | dl_find_symbol(libhandle, symbolname) |
642 | void * libhandle |
643 | char * symbolname |
644 | CODE: |
bf49b057 |
645 | DLDEBUG(2,PerlIO_printf(Perl_debug_log, "dl_find_symbol(handle=%x, symbol=%s)\n", |
a0d0e21e |
646 | libhandle, symbolname)); |
647 | RETVAL = dlsym(libhandle, symbolname); |
bf49b057 |
648 | DLDEBUG(2,PerlIO_printf(Perl_debug_log, " symbolref = %x\n", RETVAL)); |
a0d0e21e |
649 | ST(0) = sv_newmortal() ; |
650 | if (RETVAL == NULL) |
cea2e8a9 |
651 | SaveError(aTHX_ "%s",dlerror()) ; |
a0d0e21e |
652 | else |
f66f545a |
653 | sv_setiv( ST(0), PTR2IV(RETVAL)); |
a0d0e21e |
654 | |
655 | |
656 | void |
657 | dl_undef_symbols() |
658 | PPCODE: |
659 | |
660 | |
661 | |
662 | # These functions should not need changing on any platform: |
663 | |
664 | void |
665 | dl_install_xsub(perl_name, symref, filename="$Package") |
666 | char * perl_name |
667 | void * symref |
668 | char * filename |
669 | CODE: |
bf49b057 |
670 | DLDEBUG(2,PerlIO_printf(Perl_debug_log, "dl_install_xsub(name=%s, symref=%x)\n", |
a0d0e21e |
671 | perl_name, symref)); |
cea2e8a9 |
672 | ST(0) = sv_2mortal(newRV((SV*)newXS(perl_name, |
673 | (void(*)(pTHX_ CV *))symref, |
674 | filename))); |
a0d0e21e |
675 | |
676 | |
677 | char * |
678 | dl_error() |
679 | CODE: |
680 | RETVAL = LastError ; |
681 | OUTPUT: |
682 | RETVAL |
683 | |
684 | # end. |