Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* opncls.c -- open and close a BFD. |
7898deda | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, |
66eb6687 | 3 | 2001, 2002, 2003, 2004, 2005, 2006 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | ||
6 | Written by Cygnus Support. | |
7 | ||
c4f3d130 | 8 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 9 | |
c4f3d130 NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
252b5132 | 14 | |
c4f3d130 NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
252b5132 | 19 | |
c4f3d130 NC |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
3e110533 | 22 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 RH |
23 | |
24 | #include "bfd.h" | |
25 | #include "sysdep.h" | |
26 | #include "objalloc.h" | |
27 | #include "libbfd.h" | |
31f7ba04 | 28 | #include "libiberty.h" |
252b5132 RH |
29 | |
30 | #ifndef S_IXUSR | |
31 | #define S_IXUSR 0100 /* Execute by owner. */ | |
32 | #endif | |
33 | #ifndef S_IXGRP | |
34 | #define S_IXGRP 0010 /* Execute by group. */ | |
35 | #endif | |
36 | #ifndef S_IXOTH | |
37 | #define S_IXOTH 0001 /* Execute by others. */ | |
38 | #endif | |
39 | ||
52b69c9e AO |
40 | /* Counter used to initialize the bfd identifier. */ |
41 | ||
42 | static unsigned int _bfd_id_counter = 0; | |
43 | ||
252b5132 RH |
44 | /* fdopen is a loser -- we should use stdio exclusively. Unfortunately |
45 | if we do that we can't use fcntl. */ | |
46 | ||
252b5132 RH |
47 | /* Return a new BFD. All BFD's are allocated through this routine. */ |
48 | ||
49 | bfd * | |
c58b9523 | 50 | _bfd_new_bfd (void) |
252b5132 RH |
51 | { |
52 | bfd *nbfd; | |
53 | ||
c58b9523 | 54 | nbfd = bfd_zmalloc (sizeof (bfd)); |
252b5132 RH |
55 | if (nbfd == NULL) |
56 | return NULL; | |
57 | ||
52b69c9e AO |
58 | nbfd->id = _bfd_id_counter++; |
59 | ||
c58b9523 | 60 | nbfd->memory = objalloc_create (); |
252b5132 RH |
61 | if (nbfd->memory == NULL) |
62 | { | |
63 | bfd_set_error (bfd_error_no_memory); | |
73e87d70 | 64 | free (nbfd); |
252b5132 RH |
65 | return NULL; |
66 | } | |
67 | ||
68 | nbfd->arch_info = &bfd_default_arch_struct; | |
69 | ||
70 | nbfd->direction = no_direction; | |
71 | nbfd->iostream = NULL; | |
72 | nbfd->where = 0; | |
28d39d1a | 73 | if (!bfd_hash_table_init_n (& nbfd->section_htab, bfd_section_hash_newfunc, |
66eb6687 | 74 | sizeof (struct section_hash_entry), 251)) |
73e87d70 AM |
75 | { |
76 | free (nbfd); | |
77 | return NULL; | |
78 | } | |
c58b9523 | 79 | nbfd->sections = NULL; |
5daa8fe7 | 80 | nbfd->section_last = NULL; |
252b5132 | 81 | nbfd->format = bfd_unknown; |
c58b9523 | 82 | nbfd->my_archive = NULL; |
dc810e39 | 83 | nbfd->origin = 0; |
b34976b6 AM |
84 | nbfd->opened_once = FALSE; |
85 | nbfd->output_has_begun = FALSE; | |
252b5132 | 86 | nbfd->section_count = 0; |
c58b9523 | 87 | nbfd->usrdata = NULL; |
b34976b6 | 88 | nbfd->cacheable = FALSE; |
252b5132 | 89 | nbfd->flags = BFD_NO_FLAGS; |
b34976b6 | 90 | nbfd->mtime_set = FALSE; |
252b5132 RH |
91 | |
92 | return nbfd; | |
93 | } | |
94 | ||
95 | /* Allocate a new BFD as a member of archive OBFD. */ | |
96 | ||
97 | bfd * | |
c58b9523 | 98 | _bfd_new_bfd_contained_in (bfd *obfd) |
252b5132 RH |
99 | { |
100 | bfd *nbfd; | |
101 | ||
102 | nbfd = _bfd_new_bfd (); | |
301e3139 AM |
103 | if (nbfd == NULL) |
104 | return NULL; | |
252b5132 | 105 | nbfd->xvec = obfd->xvec; |
40838a72 | 106 | nbfd->iovec = obfd->iovec; |
252b5132 RH |
107 | nbfd->my_archive = obfd; |
108 | nbfd->direction = read_direction; | |
109 | nbfd->target_defaulted = obfd->target_defaulted; | |
110 | return nbfd; | |
111 | } | |
112 | ||
73e87d70 AM |
113 | /* Delete a BFD. */ |
114 | ||
115 | void | |
c58b9523 | 116 | _bfd_delete_bfd (bfd *abfd) |
73e87d70 | 117 | { |
b25e3d87 L |
118 | if (abfd->memory) |
119 | { | |
120 | bfd_hash_table_free (&abfd->section_htab); | |
121 | objalloc_free ((struct objalloc *) abfd->memory); | |
122 | } | |
73e87d70 AM |
123 | free (abfd); |
124 | } | |
125 | ||
b25e3d87 L |
126 | /* Free objalloc memory. */ |
127 | ||
128 | bfd_boolean | |
129 | _bfd_free_cached_info (bfd *abfd) | |
130 | { | |
131 | if (abfd->memory) | |
132 | { | |
133 | bfd_hash_table_free (&abfd->section_htab); | |
134 | objalloc_free ((struct objalloc *) abfd->memory); | |
135 | ||
136 | abfd->sections = NULL; | |
137 | abfd->section_last = NULL; | |
138 | abfd->outsymbols = NULL; | |
139 | abfd->tdata.any = NULL; | |
140 | abfd->usrdata = NULL; | |
141 | abfd->memory = NULL; | |
142 | } | |
143 | ||
144 | return TRUE; | |
145 | } | |
146 | ||
252b5132 RH |
147 | /* |
148 | SECTION | |
149 | Opening and closing BFDs | |
150 | ||
1b74d094 BW |
151 | SUBSECTION |
152 | Functions for opening and closing | |
252b5132 RH |
153 | */ |
154 | ||
155 | /* | |
156 | FUNCTION | |
2d0123b7 | 157 | bfd_fopen |
252b5132 RH |
158 | |
159 | SYNOPSIS | |
2d0123b7 MM |
160 | bfd *bfd_fopen (const char *filename, const char *target, |
161 | const char *mode, int fd); | |
252b5132 RH |
162 | |
163 | DESCRIPTION | |
2d0123b7 MM |
164 | Open the file @var{filename} with the target @var{target}. |
165 | Return a pointer to the created BFD. If @var{fd} is not -1, | |
166 | then <<fdopen>> is used to open the file; otherwise, <<fopen>> | |
167 | is used. @var{mode} is passed directly to <<fopen>> or | |
168 | <<fdopen>>. | |
252b5132 RH |
169 | |
170 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
171 | that function. | |
172 | ||
a366f4ff MM |
173 | The new BFD is marked as cacheable iff @var{fd} is -1. |
174 | ||
252b5132 | 175 | If <<NULL>> is returned then an error has occured. Possible errors |
7c4a37eb AM |
176 | are <<bfd_error_no_memory>>, <<bfd_error_invalid_target>> or |
177 | <<system_call>> error. | |
252b5132 RH |
178 | */ |
179 | ||
180 | bfd * | |
2d0123b7 | 181 | bfd_fopen (const char *filename, const char *target, const char *mode, int fd) |
252b5132 RH |
182 | { |
183 | bfd *nbfd; | |
184 | const bfd_target *target_vec; | |
185 | ||
186 | nbfd = _bfd_new_bfd (); | |
187 | if (nbfd == NULL) | |
188 | return NULL; | |
189 | ||
190 | target_vec = bfd_find_target (target, nbfd); | |
191 | if (target_vec == NULL) | |
192 | { | |
73e87d70 | 193 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
194 | return NULL; |
195 | } | |
2d0123b7 MM |
196 | |
197 | #ifdef HAVE_FDOPEN | |
198 | if (fd != -1) | |
199 | nbfd->iostream = fdopen (fd, mode); | |
200 | else | |
201 | #endif | |
2e6f4fae | 202 | nbfd->iostream = real_fopen (filename, mode); |
2d0123b7 MM |
203 | if (nbfd->iostream == NULL) |
204 | { | |
92a7c1b8 | 205 | bfd_set_error (bfd_error_system_call); |
2d0123b7 MM |
206 | _bfd_delete_bfd (nbfd); |
207 | return NULL; | |
208 | } | |
252b5132 | 209 | |
2d0123b7 | 210 | /* OK, put everything where it belongs. */ |
252b5132 | 211 | nbfd->filename = filename; |
252b5132 | 212 | |
2d0123b7 MM |
213 | /* Figure out whether the user is opening the file for reading, |
214 | writing, or both, by looking at the MODE argument. */ | |
215 | if ((mode[0] == 'r' || mode[0] == 'w' || mode[0] == 'a') | |
216 | && mode[1] == '+') | |
217 | nbfd->direction = both_direction; | |
218 | else if (mode[0] == 'r') | |
219 | nbfd->direction = read_direction; | |
220 | else | |
221 | nbfd->direction = write_direction; | |
222 | ||
223 | if (! bfd_cache_init (nbfd)) | |
252b5132 | 224 | { |
73e87d70 | 225 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
226 | return NULL; |
227 | } | |
2d0123b7 | 228 | nbfd->opened_once = TRUE; |
a366f4ff MM |
229 | /* If we opened the file by name, mark it cacheable; we can close it |
230 | and reopen it later. However, if a file descriptor was provided, | |
231 | then it may have been opened with special flags that make it | |
232 | unsafe to close and reopen the file. */ | |
233 | if (fd == -1) | |
234 | bfd_set_cacheable (nbfd, TRUE); | |
252b5132 RH |
235 | |
236 | return nbfd; | |
237 | } | |
238 | ||
2d0123b7 MM |
239 | /* |
240 | FUNCTION | |
241 | bfd_openr | |
242 | ||
243 | SYNOPSIS | |
244 | bfd *bfd_openr (const char *filename, const char *target); | |
245 | ||
246 | DESCRIPTION | |
247 | Open the file @var{filename} (using <<fopen>>) with the target | |
248 | @var{target}. Return a pointer to the created BFD. | |
249 | ||
250 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
251 | that function. | |
252 | ||
253 | If <<NULL>> is returned then an error has occured. Possible errors | |
254 | are <<bfd_error_no_memory>>, <<bfd_error_invalid_target>> or | |
255 | <<system_call>> error. | |
256 | */ | |
257 | ||
258 | bfd * | |
259 | bfd_openr (const char *filename, const char *target) | |
260 | { | |
261 | return bfd_fopen (filename, target, FOPEN_RB, -1); | |
262 | } | |
263 | ||
252b5132 RH |
264 | /* Don't try to `optimize' this function: |
265 | ||
266 | o - We lock using stack space so that interrupting the locking | |
267 | won't cause a storage leak. | |
268 | o - We open the file stream last, since we don't want to have to | |
269 | close it if anything goes wrong. Closing the stream means closing | |
c4f3d130 | 270 | the file descriptor too, even though we didn't open it. */ |
252b5132 RH |
271 | /* |
272 | FUNCTION | |
7c4a37eb | 273 | bfd_fdopenr |
252b5132 RH |
274 | |
275 | SYNOPSIS | |
c58b9523 | 276 | bfd *bfd_fdopenr (const char *filename, const char *target, int fd); |
252b5132 RH |
277 | |
278 | DESCRIPTION | |
7c4a37eb AM |
279 | <<bfd_fdopenr>> is to <<bfd_fopenr>> much like <<fdopen>> is to |
280 | <<fopen>>. It opens a BFD on a file already described by the | |
281 | @var{fd} supplied. | |
282 | ||
283 | When the file is later <<bfd_close>>d, the file descriptor will | |
284 | be closed. If the caller desires that this file descriptor be | |
285 | cached by BFD (opened as needed, closed as needed to free | |
286 | descriptors for other opens), with the supplied @var{fd} used as | |
287 | an initial file descriptor (but subject to closure at any time), | |
288 | call bfd_set_cacheable(bfd, 1) on the returned BFD. The default | |
7dee875e | 289 | is to assume no caching; the file descriptor will remain open |
7c4a37eb AM |
290 | until <<bfd_close>>, and will not be affected by BFD operations |
291 | on other files. | |
292 | ||
293 | Possible errors are <<bfd_error_no_memory>>, | |
294 | <<bfd_error_invalid_target>> and <<bfd_error_system_call>>. | |
252b5132 RH |
295 | */ |
296 | ||
297 | bfd * | |
c58b9523 | 298 | bfd_fdopenr (const char *filename, const char *target, int fd) |
252b5132 | 299 | { |
2d0123b7 MM |
300 | const char *mode; |
301 | #if defined(HAVE_FCNTL) && defined(F_GETFL) | |
252b5132 | 302 | int fdflags; |
2d0123b7 | 303 | #endif |
252b5132 | 304 | |
252b5132 | 305 | #if ! defined(HAVE_FCNTL) || ! defined(F_GETFL) |
2d0123b7 | 306 | mode = FOPEN_RUB; /* Assume full access. */ |
252b5132 RH |
307 | #else |
308 | fdflags = fcntl (fd, F_GETFL, NULL); | |
767e34d1 | 309 | if (fdflags == -1) |
d83747fa AM |
310 | { |
311 | bfd_set_error (bfd_error_system_call); | |
312 | return NULL; | |
313 | } | |
252b5132 | 314 | |
c4f3d130 | 315 | /* (O_ACCMODE) parens are to avoid Ultrix header file bug. */ |
252b5132 RH |
316 | switch (fdflags & (O_ACCMODE)) |
317 | { | |
dfab97d6 MM |
318 | case O_RDONLY: mode = FOPEN_RB; break; |
319 | case O_WRONLY: mode = FOPEN_RUB; break; | |
320 | case O_RDWR: mode = FOPEN_RUB; break; | |
252b5132 RH |
321 | default: abort (); |
322 | } | |
323 | #endif | |
324 | ||
2d0123b7 | 325 | return bfd_fopen (filename, target, mode, fd); |
252b5132 RH |
326 | } |
327 | ||
328 | /* | |
329 | FUNCTION | |
330 | bfd_openstreamr | |
331 | ||
332 | SYNOPSIS | |
c58b9523 | 333 | bfd *bfd_openstreamr (const char *, const char *, void *); |
252b5132 RH |
334 | |
335 | DESCRIPTION | |
336 | ||
337 | Open a BFD for read access on an existing stdio stream. When | |
338 | the BFD is passed to <<bfd_close>>, the stream will be closed. | |
339 | */ | |
340 | ||
341 | bfd * | |
c58b9523 | 342 | bfd_openstreamr (const char *filename, const char *target, void *streamarg) |
252b5132 | 343 | { |
c58b9523 | 344 | FILE *stream = streamarg; |
252b5132 RH |
345 | bfd *nbfd; |
346 | const bfd_target *target_vec; | |
347 | ||
348 | nbfd = _bfd_new_bfd (); | |
349 | if (nbfd == NULL) | |
350 | return NULL; | |
351 | ||
352 | target_vec = bfd_find_target (target, nbfd); | |
353 | if (target_vec == NULL) | |
354 | { | |
73e87d70 | 355 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
356 | return NULL; |
357 | } | |
358 | ||
c58b9523 | 359 | nbfd->iostream = stream; |
252b5132 RH |
360 | nbfd->filename = filename; |
361 | nbfd->direction = read_direction; | |
dc810e39 | 362 | |
252b5132 RH |
363 | if (! bfd_cache_init (nbfd)) |
364 | { | |
73e87d70 | 365 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
366 | return NULL; |
367 | } | |
368 | ||
369 | return nbfd; | |
370 | } | |
40838a72 AC |
371 | |
372 | /* | |
373 | FUNCTION | |
374 | bfd_openr_iovec | |
375 | ||
376 | SYNOPSIS | |
377 | bfd *bfd_openr_iovec (const char *filename, const char *target, | |
378 | void *(*open) (struct bfd *nbfd, | |
379 | void *open_closure), | |
380 | void *open_closure, | |
381 | file_ptr (*pread) (struct bfd *nbfd, | |
382 | void *stream, | |
383 | void *buf, | |
384 | file_ptr nbytes, | |
385 | file_ptr offset), | |
386 | int (*close) (struct bfd *nbfd, | |
f6cf9273 AM |
387 | void *stream), |
388 | int (*stat) (struct bfd *abfd, | |
389 | void *stream, | |
390 | struct stat *sb)); | |
40838a72 AC |
391 | |
392 | DESCRIPTION | |
393 | ||
394 | Create and return a BFD backed by a read-only @var{stream}. | |
395 | The @var{stream} is created using @var{open}, accessed using | |
396 | @var{pread} and destroyed using @var{close}. | |
397 | ||
398 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
399 | that function. | |
400 | ||
401 | Calls @var{open} (which can call <<bfd_zalloc>> and | |
402 | <<bfd_get_filename>>) to obtain the read-only stream backing | |
403 | the BFD. @var{open} either succeeds returning the | |
404 | non-<<NULL>> @var{stream}, or fails returning <<NULL>> | |
405 | (setting <<bfd_error>>). | |
406 | ||
407 | Calls @var{pread} to request @var{nbytes} of data from | |
408 | @var{stream} starting at @var{offset} (e.g., via a call to | |
409 | <<bfd_read>>). @var{pread} either succeeds returning the | |
410 | number of bytes read (which can be less than @var{nbytes} when | |
411 | end-of-file), or fails returning -1 (setting <<bfd_error>>). | |
412 | ||
413 | Calls @var{close} when the BFD is later closed using | |
414 | <<bfd_close>>. @var{close} either succeeds returning 0, or | |
415 | fails returning -1 (setting <<bfd_error>>). | |
416 | ||
f6cf9273 AM |
417 | Calls @var{stat} to fill in a stat structure for bfd_stat, |
418 | bfd_get_size, and bfd_get_mtime calls. @var{stat} returns 0 | |
419 | on success, or returns -1 on failure (setting <<bfd_error>>). | |
420 | ||
40838a72 AC |
421 | If <<bfd_openr_iovec>> returns <<NULL>> then an error has |
422 | occurred. Possible errors are <<bfd_error_no_memory>>, | |
423 | <<bfd_error_invalid_target>> and <<bfd_error_system_call>>. | |
424 | ||
425 | */ | |
426 | ||
427 | struct opncls | |
428 | { | |
429 | void *stream; | |
430 | file_ptr (*pread) (struct bfd *abfd, void *stream, void *buf, | |
431 | file_ptr nbytes, file_ptr offset); | |
432 | int (*close) (struct bfd *abfd, void *stream); | |
f6cf9273 | 433 | int (*stat) (struct bfd *abfd, void *stream, struct stat *sb); |
40838a72 AC |
434 | file_ptr where; |
435 | }; | |
436 | ||
437 | static file_ptr | |
438 | opncls_btell (struct bfd *abfd) | |
439 | { | |
440 | struct opncls *vec = abfd->iostream; | |
441 | return vec->where; | |
442 | } | |
443 | ||
444 | static int | |
445 | opncls_bseek (struct bfd *abfd, file_ptr offset, int whence) | |
446 | { | |
447 | struct opncls *vec = abfd->iostream; | |
448 | switch (whence) | |
449 | { | |
450 | case SEEK_SET: vec->where = offset; break; | |
451 | case SEEK_CUR: vec->where += offset; break; | |
452 | case SEEK_END: return -1; | |
453 | } | |
454 | return 0; | |
455 | } | |
456 | ||
457 | static file_ptr | |
458 | opncls_bread (struct bfd *abfd, void *buf, file_ptr nbytes) | |
459 | { | |
460 | struct opncls *vec = abfd->iostream; | |
0709bb22 | 461 | file_ptr nread = (vec->pread) (abfd, vec->stream, buf, nbytes, vec->where); |
40838a72 AC |
462 | if (nread < 0) |
463 | return nread; | |
464 | vec->where += nread; | |
465 | return nread; | |
466 | } | |
467 | ||
468 | static file_ptr | |
469 | opncls_bwrite (struct bfd *abfd ATTRIBUTE_UNUSED, | |
470 | const void *where ATTRIBUTE_UNUSED, | |
471 | file_ptr nbytes ATTRIBUTE_UNUSED) | |
472 | { | |
473 | return -1; | |
474 | } | |
475 | ||
476 | static int | |
477 | opncls_bclose (struct bfd *abfd) | |
478 | { | |
479 | struct opncls *vec = abfd->iostream; | |
480 | /* Since the VEC's memory is bound to the bfd deleting the bfd will | |
481 | free it. */ | |
482 | int status = 0; | |
483 | if (vec->close != NULL) | |
0709bb22 | 484 | status = (vec->close) (abfd, vec->stream); |
40838a72 AC |
485 | abfd->iostream = NULL; |
486 | return status; | |
487 | } | |
488 | ||
489 | static int | |
490 | opncls_bflush (struct bfd *abfd ATTRIBUTE_UNUSED) | |
491 | { | |
492 | return 0; | |
493 | } | |
494 | ||
495 | static int | |
f6cf9273 | 496 | opncls_bstat (struct bfd *abfd, struct stat *sb) |
40838a72 | 497 | { |
f6cf9273 AM |
498 | struct opncls *vec = abfd->iostream; |
499 | ||
40838a72 | 500 | memset (sb, 0, sizeof (*sb)); |
f6cf9273 AM |
501 | if (vec->stat == NULL) |
502 | return 0; | |
503 | ||
504 | return (vec->stat) (abfd, vec->stream, sb); | |
40838a72 AC |
505 | } |
506 | ||
507 | static const struct bfd_iovec opncls_iovec = { | |
508 | &opncls_bread, &opncls_bwrite, &opncls_btell, &opncls_bseek, | |
509 | &opncls_bclose, &opncls_bflush, &opncls_bstat | |
510 | }; | |
511 | ||
512 | bfd * | |
513 | bfd_openr_iovec (const char *filename, const char *target, | |
514 | void *(*open) (struct bfd *nbfd, | |
515 | void *open_closure), | |
516 | void *open_closure, | |
517 | file_ptr (*pread) (struct bfd *abfd, | |
518 | void *stream, | |
519 | void *buf, | |
520 | file_ptr nbytes, | |
521 | file_ptr offset), | |
522 | int (*close) (struct bfd *nbfd, | |
f6cf9273 AM |
523 | void *stream), |
524 | int (*stat) (struct bfd *abfd, | |
525 | void *stream, | |
526 | struct stat *sb)) | |
40838a72 AC |
527 | { |
528 | bfd *nbfd; | |
529 | const bfd_target *target_vec; | |
530 | struct opncls *vec; | |
531 | void *stream; | |
532 | ||
533 | nbfd = _bfd_new_bfd (); | |
534 | if (nbfd == NULL) | |
535 | return NULL; | |
536 | ||
537 | target_vec = bfd_find_target (target, nbfd); | |
538 | if (target_vec == NULL) | |
539 | { | |
540 | _bfd_delete_bfd (nbfd); | |
541 | return NULL; | |
542 | } | |
543 | ||
544 | nbfd->filename = filename; | |
545 | nbfd->direction = read_direction; | |
546 | ||
547 | stream = open (nbfd, open_closure); | |
548 | if (stream == NULL) | |
549 | { | |
550 | _bfd_delete_bfd (nbfd); | |
551 | return NULL; | |
552 | } | |
553 | ||
554 | vec = bfd_zalloc (nbfd, sizeof (struct opncls)); | |
555 | vec->stream = stream; | |
556 | vec->pread = pread; | |
557 | vec->close = close; | |
f6cf9273 | 558 | vec->stat = stat; |
40838a72 AC |
559 | |
560 | nbfd->iovec = &opncls_iovec; | |
561 | nbfd->iostream = vec; | |
562 | ||
563 | return nbfd; | |
564 | } | |
252b5132 | 565 | \f |
c4f3d130 NC |
566 | /* bfd_openw -- open for writing. |
567 | Returns a pointer to a freshly-allocated BFD on success, or NULL. | |
252b5132 | 568 | |
c4f3d130 | 569 | See comment by bfd_fdopenr before you try to modify this function. */ |
252b5132 RH |
570 | |
571 | /* | |
572 | FUNCTION | |
573 | bfd_openw | |
574 | ||
575 | SYNOPSIS | |
c58b9523 | 576 | bfd *bfd_openw (const char *filename, const char *target); |
252b5132 RH |
577 | |
578 | DESCRIPTION | |
579 | Create a BFD, associated with file @var{filename}, using the | |
580 | file format @var{target}, and return a pointer to it. | |
581 | ||
582 | Possible errors are <<bfd_error_system_call>>, <<bfd_error_no_memory>>, | |
583 | <<bfd_error_invalid_target>>. | |
584 | */ | |
585 | ||
586 | bfd * | |
c58b9523 | 587 | bfd_openw (const char *filename, const char *target) |
252b5132 RH |
588 | { |
589 | bfd *nbfd; | |
590 | const bfd_target *target_vec; | |
591 | ||
252b5132 | 592 | /* nbfd has to point to head of malloc'ed block so that bfd_close may |
c4f3d130 | 593 | reclaim it correctly. */ |
252b5132 RH |
594 | nbfd = _bfd_new_bfd (); |
595 | if (nbfd == NULL) | |
596 | return NULL; | |
597 | ||
598 | target_vec = bfd_find_target (target, nbfd); | |
599 | if (target_vec == NULL) | |
600 | { | |
73e87d70 | 601 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
602 | return NULL; |
603 | } | |
604 | ||
605 | nbfd->filename = filename; | |
606 | nbfd->direction = write_direction; | |
607 | ||
608 | if (bfd_open_file (nbfd) == NULL) | |
609 | { | |
c4f3d130 NC |
610 | /* File not writeable, etc. */ |
611 | bfd_set_error (bfd_error_system_call); | |
73e87d70 | 612 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
613 | return NULL; |
614 | } | |
615 | ||
616 | return nbfd; | |
617 | } | |
618 | ||
619 | /* | |
620 | ||
621 | FUNCTION | |
622 | bfd_close | |
623 | ||
624 | SYNOPSIS | |
b34976b6 | 625 | bfd_boolean bfd_close (bfd *abfd); |
252b5132 RH |
626 | |
627 | DESCRIPTION | |
628 | ||
7c4a37eb AM |
629 | Close a BFD. If the BFD was open for writing, then pending |
630 | operations are completed and the file written out and closed. | |
631 | If the created file is executable, then <<chmod>> is called | |
632 | to mark it as such. | |
252b5132 RH |
633 | |
634 | All memory attached to the BFD is released. | |
635 | ||
636 | The file descriptor associated with the BFD is closed (even | |
637 | if it was passed in to BFD by <<bfd_fdopenr>>). | |
638 | ||
639 | RETURNS | |
b34976b6 | 640 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
641 | */ |
642 | ||
643 | ||
b34976b6 | 644 | bfd_boolean |
c58b9523 | 645 | bfd_close (bfd *abfd) |
252b5132 | 646 | { |
b34976b6 | 647 | bfd_boolean ret; |
252b5132 | 648 | |
c4f3d130 | 649 | if (bfd_write_p (abfd)) |
252b5132 RH |
650 | { |
651 | if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd))) | |
b34976b6 | 652 | return FALSE; |
252b5132 RH |
653 | } |
654 | ||
655 | if (! BFD_SEND (abfd, _close_and_cleanup, (abfd))) | |
b34976b6 | 656 | return FALSE; |
252b5132 | 657 | |
40838a72 AC |
658 | /* FIXME: cagney/2004-02-15: Need to implement a BFD_IN_MEMORY io |
659 | vector. */ | |
660 | if (!(abfd->flags & BFD_IN_MEMORY)) | |
661 | ret = abfd->iovec->bclose (abfd); | |
662 | else | |
ed040321 | 663 | ret = TRUE; |
252b5132 RH |
664 | |
665 | /* If the file was open for writing and is now executable, | |
c4f3d130 | 666 | make it so. */ |
252b5132 RH |
667 | if (ret |
668 | && abfd->direction == write_direction | |
669 | && abfd->flags & EXEC_P) | |
670 | { | |
671 | struct stat buf; | |
672 | ||
673 | if (stat (abfd->filename, &buf) == 0) | |
674 | { | |
7c4a37eb | 675 | unsigned int mask = umask (0); |
c4f3d130 | 676 | |
252b5132 RH |
677 | umask (mask); |
678 | chmod (abfd->filename, | |
679 | (0777 | |
680 | & (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask)))); | |
681 | } | |
682 | } | |
683 | ||
73e87d70 | 684 | _bfd_delete_bfd (abfd); |
252b5132 RH |
685 | |
686 | return ret; | |
687 | } | |
688 | ||
689 | /* | |
690 | FUNCTION | |
691 | bfd_close_all_done | |
692 | ||
693 | SYNOPSIS | |
b34976b6 | 694 | bfd_boolean bfd_close_all_done (bfd *); |
252b5132 RH |
695 | |
696 | DESCRIPTION | |
7c4a37eb AM |
697 | Close a BFD. Differs from <<bfd_close>> since it does not |
698 | complete any pending operations. This routine would be used | |
699 | if the application had just used BFD for swapping and didn't | |
700 | want to use any of the writing code. | |
252b5132 RH |
701 | |
702 | If the created file is executable, then <<chmod>> is called | |
703 | to mark it as such. | |
704 | ||
705 | All memory attached to the BFD is released. | |
706 | ||
707 | RETURNS | |
b34976b6 | 708 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
709 | */ |
710 | ||
b34976b6 | 711 | bfd_boolean |
c58b9523 | 712 | bfd_close_all_done (bfd *abfd) |
252b5132 | 713 | { |
b34976b6 | 714 | bfd_boolean ret; |
252b5132 RH |
715 | |
716 | ret = bfd_cache_close (abfd); | |
717 | ||
718 | /* If the file was open for writing and is now executable, | |
c4f3d130 | 719 | make it so. */ |
252b5132 RH |
720 | if (ret |
721 | && abfd->direction == write_direction | |
722 | && abfd->flags & EXEC_P) | |
723 | { | |
724 | struct stat buf; | |
725 | ||
726 | if (stat (abfd->filename, &buf) == 0) | |
727 | { | |
dc810e39 | 728 | unsigned int mask = umask (0); |
c4f3d130 | 729 | |
252b5132 RH |
730 | umask (mask); |
731 | chmod (abfd->filename, | |
b6cdd0fd | 732 | (0777 |
252b5132 RH |
733 | & (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask)))); |
734 | } | |
735 | } | |
736 | ||
73e87d70 | 737 | _bfd_delete_bfd (abfd); |
252b5132 RH |
738 | |
739 | return ret; | |
740 | } | |
741 | ||
742 | /* | |
743 | FUNCTION | |
744 | bfd_create | |
745 | ||
746 | SYNOPSIS | |
c58b9523 | 747 | bfd *bfd_create (const char *filename, bfd *templ); |
252b5132 RH |
748 | |
749 | DESCRIPTION | |
7c4a37eb AM |
750 | Create a new BFD in the manner of <<bfd_openw>>, but without |
751 | opening a file. The new BFD takes the target from the target | |
752 | used by @var{template}. The format is always set to <<bfd_object>>. | |
252b5132 RH |
753 | */ |
754 | ||
755 | bfd * | |
c58b9523 | 756 | bfd_create (const char *filename, bfd *templ) |
252b5132 RH |
757 | { |
758 | bfd *nbfd; | |
759 | ||
760 | nbfd = _bfd_new_bfd (); | |
761 | if (nbfd == NULL) | |
762 | return NULL; | |
763 | nbfd->filename = filename; | |
764 | if (templ) | |
765 | nbfd->xvec = templ->xvec; | |
766 | nbfd->direction = no_direction; | |
767 | bfd_set_format (nbfd, bfd_object); | |
c4f3d130 | 768 | |
252b5132 RH |
769 | return nbfd; |
770 | } | |
771 | ||
772 | /* | |
773 | FUNCTION | |
774 | bfd_make_writable | |
775 | ||
776 | SYNOPSIS | |
b34976b6 | 777 | bfd_boolean bfd_make_writable (bfd *abfd); |
252b5132 RH |
778 | |
779 | DESCRIPTION | |
780 | Takes a BFD as created by <<bfd_create>> and converts it | |
781 | into one like as returned by <<bfd_openw>>. It does this | |
782 | by converting the BFD to BFD_IN_MEMORY. It's assumed that | |
783 | you will call <<bfd_make_readable>> on this bfd later. | |
784 | ||
785 | RETURNS | |
b34976b6 | 786 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
787 | */ |
788 | ||
b34976b6 | 789 | bfd_boolean |
c58b9523 | 790 | bfd_make_writable (bfd *abfd) |
252b5132 RH |
791 | { |
792 | struct bfd_in_memory *bim; | |
793 | ||
794 | if (abfd->direction != no_direction) | |
795 | { | |
796 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 797 | return FALSE; |
252b5132 RH |
798 | } |
799 | ||
c58b9523 AM |
800 | bim = bfd_malloc (sizeof (struct bfd_in_memory)); |
801 | abfd->iostream = bim; | |
c4f3d130 | 802 | /* bfd_bwrite will grow these as needed. */ |
252b5132 RH |
803 | bim->size = 0; |
804 | bim->buffer = 0; | |
805 | ||
806 | abfd->flags |= BFD_IN_MEMORY; | |
807 | abfd->direction = write_direction; | |
808 | abfd->where = 0; | |
809 | ||
b34976b6 | 810 | return TRUE; |
252b5132 RH |
811 | } |
812 | ||
813 | /* | |
814 | FUNCTION | |
815 | bfd_make_readable | |
816 | ||
817 | SYNOPSIS | |
b34976b6 | 818 | bfd_boolean bfd_make_readable (bfd *abfd); |
252b5132 RH |
819 | |
820 | DESCRIPTION | |
821 | Takes a BFD as created by <<bfd_create>> and | |
822 | <<bfd_make_writable>> and converts it into one like as | |
823 | returned by <<bfd_openr>>. It does this by writing the | |
824 | contents out to the memory buffer, then reversing the | |
825 | direction. | |
826 | ||
827 | RETURNS | |
b34976b6 | 828 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. */ |
252b5132 | 829 | |
b34976b6 | 830 | bfd_boolean |
c58b9523 | 831 | bfd_make_readable (bfd *abfd) |
252b5132 RH |
832 | { |
833 | if (abfd->direction != write_direction || !(abfd->flags & BFD_IN_MEMORY)) | |
834 | { | |
835 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 836 | return FALSE; |
252b5132 RH |
837 | } |
838 | ||
839 | if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd))) | |
b34976b6 | 840 | return FALSE; |
252b5132 RH |
841 | |
842 | if (! BFD_SEND (abfd, _close_and_cleanup, (abfd))) | |
b34976b6 | 843 | return FALSE; |
252b5132 RH |
844 | |
845 | ||
846 | abfd->arch_info = &bfd_default_arch_struct; | |
847 | ||
848 | abfd->where = 0; | |
252b5132 | 849 | abfd->format = bfd_unknown; |
c58b9523 | 850 | abfd->my_archive = NULL; |
dc810e39 | 851 | abfd->origin = 0; |
b34976b6 AM |
852 | abfd->opened_once = FALSE; |
853 | abfd->output_has_begun = FALSE; | |
252b5132 | 854 | abfd->section_count = 0; |
c58b9523 | 855 | abfd->usrdata = NULL; |
b34976b6 | 856 | abfd->cacheable = FALSE; |
252b5132 | 857 | abfd->flags = BFD_IN_MEMORY; |
b34976b6 | 858 | abfd->mtime_set = FALSE; |
252b5132 | 859 | |
b34976b6 | 860 | abfd->target_defaulted = TRUE; |
252b5132 RH |
861 | abfd->direction = read_direction; |
862 | abfd->sections = 0; | |
863 | abfd->symcount = 0; | |
864 | abfd->outsymbols = 0; | |
865 | abfd->tdata.any = 0; | |
866 | ||
e54fdaa5 AM |
867 | bfd_section_list_clear (abfd); |
868 | bfd_check_format (abfd, bfd_object); | |
252b5132 | 869 | |
b34976b6 | 870 | return TRUE; |
252b5132 RH |
871 | } |
872 | ||
873 | /* | |
874 | INTERNAL_FUNCTION | |
875 | bfd_alloc | |
876 | ||
877 | SYNOPSIS | |
0fdea5ce | 878 | void *bfd_alloc (bfd *abfd, bfd_size_type wanted); |
252b5132 RH |
879 | |
880 | DESCRIPTION | |
881 | Allocate a block of @var{wanted} bytes of memory attached to | |
882 | <<abfd>> and return a pointer to it. | |
883 | */ | |
884 | ||
c58b9523 AM |
885 | void * |
886 | bfd_alloc (bfd *abfd, bfd_size_type size) | |
252b5132 | 887 | { |
c58b9523 | 888 | void *ret; |
252b5132 | 889 | |
dc810e39 AM |
890 | if (size != (unsigned long) size) |
891 | { | |
892 | bfd_set_error (bfd_error_no_memory); | |
893 | return NULL; | |
894 | } | |
895 | ||
252b5132 RH |
896 | ret = objalloc_alloc (abfd->memory, (unsigned long) size); |
897 | if (ret == NULL) | |
898 | bfd_set_error (bfd_error_no_memory); | |
899 | return ret; | |
900 | } | |
901 | ||
d0fb9a8d JJ |
902 | /* |
903 | INTERNAL_FUNCTION | |
904 | bfd_alloc2 | |
905 | ||
906 | SYNOPSIS | |
907 | void *bfd_alloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size); | |
908 | ||
909 | DESCRIPTION | |
910 | Allocate a block of @var{nmemb} elements of @var{size} bytes each | |
911 | of memory attached to <<abfd>> and return a pointer to it. | |
912 | */ | |
913 | ||
914 | void * | |
915 | bfd_alloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size) | |
916 | { | |
917 | void *ret; | |
918 | ||
919 | if ((nmemb | size) >= HALF_BFD_SIZE_TYPE | |
920 | && size != 0 | |
921 | && nmemb > ~(bfd_size_type) 0 / size) | |
922 | { | |
923 | bfd_set_error (bfd_error_no_memory); | |
924 | return NULL; | |
925 | } | |
926 | ||
927 | size *= nmemb; | |
928 | ||
929 | if (size != (unsigned long) size) | |
930 | { | |
931 | bfd_set_error (bfd_error_no_memory); | |
932 | return NULL; | |
933 | } | |
934 | ||
935 | ret = objalloc_alloc (abfd->memory, (unsigned long) size); | |
936 | if (ret == NULL) | |
937 | bfd_set_error (bfd_error_no_memory); | |
938 | return ret; | |
939 | } | |
940 | ||
c3e8c140 BE |
941 | /* |
942 | INTERNAL_FUNCTION | |
943 | bfd_zalloc | |
944 | ||
945 | SYNOPSIS | |
946 | void *bfd_zalloc (bfd *abfd, bfd_size_type wanted); | |
947 | ||
948 | DESCRIPTION | |
949 | Allocate a block of @var{wanted} bytes of zeroed memory | |
950 | attached to <<abfd>> and return a pointer to it. | |
951 | */ | |
952 | ||
c58b9523 AM |
953 | void * |
954 | bfd_zalloc (bfd *abfd, bfd_size_type size) | |
252b5132 | 955 | { |
c58b9523 | 956 | void *res; |
252b5132 RH |
957 | |
958 | res = bfd_alloc (abfd, size); | |
959 | if (res) | |
dc810e39 | 960 | memset (res, 0, (size_t) size); |
252b5132 RH |
961 | return res; |
962 | } | |
963 | ||
d0fb9a8d JJ |
964 | /* |
965 | INTERNAL_FUNCTION | |
966 | bfd_zalloc2 | |
967 | ||
968 | SYNOPSIS | |
969 | void *bfd_zalloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size); | |
970 | ||
971 | DESCRIPTION | |
972 | Allocate a block of @var{nmemb} elements of @var{size} bytes each | |
973 | of zeroed memory attached to <<abfd>> and return a pointer to it. | |
974 | */ | |
975 | ||
976 | void * | |
977 | bfd_zalloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size) | |
978 | { | |
979 | void *res; | |
980 | ||
981 | if ((nmemb | size) >= HALF_BFD_SIZE_TYPE | |
982 | && size != 0 | |
983 | && nmemb > ~(bfd_size_type) 0 / size) | |
984 | { | |
985 | bfd_set_error (bfd_error_no_memory); | |
986 | return NULL; | |
987 | } | |
988 | ||
989 | size *= nmemb; | |
990 | ||
991 | res = bfd_alloc (abfd, size); | |
992 | if (res) | |
993 | memset (res, 0, (size_t) size); | |
994 | return res; | |
995 | } | |
996 | ||
73e87d70 AM |
997 | /* Free a block allocated for a BFD. |
998 | Note: Also frees all more recently allocated blocks! */ | |
252b5132 RH |
999 | |
1000 | void | |
c58b9523 | 1001 | bfd_release (bfd *abfd, void *block) |
252b5132 RH |
1002 | { |
1003 | objalloc_free_block ((struct objalloc *) abfd->memory, block); | |
1004 | } | |
31f7ba04 NC |
1005 | |
1006 | ||
f12123c0 AM |
1007 | /* |
1008 | GNU Extension: separate debug-info files | |
1009 | ||
31f7ba04 NC |
1010 | The idea here is that a special section called .gnu_debuglink might be |
1011 | embedded in a binary file, which indicates that some *other* file | |
1012 | contains the real debugging information. This special section contains a | |
1013 | filename and CRC32 checksum, which we read and resolve to another file, | |
1014 | if it exists. | |
1015 | ||
1016 | This facilitates "optional" provision of debugging information, without | |
1017 | having to provide two complete copies of every binary object (with and | |
1018 | without debug symbols). | |
1019 | */ | |
1020 | ||
2593f09a | 1021 | #define GNU_DEBUGLINK ".gnu_debuglink" |
31f7ba04 | 1022 | /* |
2593f09a NC |
1023 | FUNCTION |
1024 | bfd_calc_gnu_debuglink_crc32 | |
31f7ba04 NC |
1025 | |
1026 | SYNOPSIS | |
c58b9523 AM |
1027 | unsigned long bfd_calc_gnu_debuglink_crc32 |
1028 | (unsigned long crc, const unsigned char *buf, bfd_size_type len); | |
31f7ba04 NC |
1029 | |
1030 | DESCRIPTION | |
2593f09a NC |
1031 | Computes a CRC value as used in the .gnu_debuglink section. |
1032 | Advances the previously computed @var{crc} value by computing | |
1033 | and adding in the crc32 for @var{len} bytes of @var{buf}. | |
1034 | ||
1035 | RETURNS | |
1036 | Return the updated CRC32 value. | |
f12123c0 | 1037 | */ |
31f7ba04 | 1038 | |
2593f09a | 1039 | unsigned long |
c58b9523 AM |
1040 | bfd_calc_gnu_debuglink_crc32 (unsigned long crc, |
1041 | const unsigned char *buf, | |
1042 | bfd_size_type len) | |
31f7ba04 NC |
1043 | { |
1044 | static const unsigned long crc32_table[256] = | |
1045 | { | |
1046 | 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, | |
1047 | 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, | |
1048 | 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, | |
1049 | 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, | |
1050 | 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, | |
1051 | 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, | |
1052 | 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, | |
1053 | 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, | |
1054 | 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, | |
1055 | 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, | |
1056 | 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, | |
1057 | 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, | |
1058 | 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, | |
1059 | 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, | |
1060 | 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, | |
1061 | 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, | |
1062 | 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, | |
1063 | 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, | |
1064 | 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, | |
1065 | 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, | |
1066 | 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, | |
1067 | 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, | |
1068 | 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, | |
1069 | 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, | |
1070 | 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, | |
1071 | 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, | |
1072 | 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, | |
1073 | 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, | |
1074 | 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, | |
1075 | 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, | |
1076 | 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, | |
1077 | 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, | |
1078 | 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, | |
1079 | 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, | |
1080 | 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, | |
1081 | 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, | |
1082 | 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, | |
1083 | 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, | |
1084 | 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, | |
1085 | 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, | |
1086 | 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, | |
1087 | 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, | |
1088 | 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, | |
1089 | 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, | |
1090 | 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, | |
1091 | 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, | |
1092 | 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, | |
1093 | 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, | |
1094 | 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, | |
1095 | 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, | |
1096 | 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, | |
1097 | 0x2d02ef8d | |
1098 | }; | |
1099 | const unsigned char *end; | |
1100 | ||
1101 | crc = ~crc & 0xffffffff; | |
1102 | for (end = buf + len; buf < end; ++ buf) | |
1103 | crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8); | |
1104 | return ~crc & 0xffffffff;; | |
1105 | } | |
1106 | ||
1107 | ||
1108 | /* | |
1109 | INTERNAL_FUNCTION | |
1110 | get_debug_link_info | |
1111 | ||
1112 | SYNOPSIS | |
c58b9523 | 1113 | char *get_debug_link_info (bfd *abfd, unsigned long *crc32_out); |
31f7ba04 NC |
1114 | |
1115 | DESCRIPTION | |
1116 | fetch the filename and CRC32 value for any separate debuginfo | |
1117 | associated with @var{abfd}. Return NULL if no such info found, | |
1118 | otherwise return filename and update @var{crc32_out}. | |
1119 | */ | |
1120 | ||
1121 | static char * | |
c58b9523 | 1122 | get_debug_link_info (bfd *abfd, unsigned long *crc32_out) |
31f7ba04 | 1123 | { |
eea6121a | 1124 | asection *sect; |
31f7ba04 | 1125 | unsigned long crc32; |
eea6121a | 1126 | bfd_byte *contents; |
31f7ba04 | 1127 | int crc_offset; |
f075ee0c | 1128 | char *name; |
31f7ba04 NC |
1129 | |
1130 | BFD_ASSERT (abfd); | |
1131 | BFD_ASSERT (crc32_out); | |
1132 | ||
2593f09a | 1133 | sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK); |
31f7ba04 NC |
1134 | |
1135 | if (sect == NULL) | |
1136 | return NULL; | |
1137 | ||
eea6121a | 1138 | if (!bfd_malloc_and_get_section (abfd, sect, &contents)) |
31f7ba04 | 1139 | { |
eea6121a AM |
1140 | if (contents != NULL) |
1141 | free (contents); | |
31f7ba04 NC |
1142 | return NULL; |
1143 | } | |
1144 | ||
1145 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
f075ee0c AM |
1146 | name = (char *) contents; |
1147 | crc_offset = strlen (name) + 1; | |
31f7ba04 NC |
1148 | crc_offset = (crc_offset + 3) & ~3; |
1149 | ||
c58b9523 | 1150 | crc32 = bfd_get_32 (abfd, contents + crc_offset); |
31f7ba04 NC |
1151 | |
1152 | *crc32_out = crc32; | |
f075ee0c | 1153 | return name; |
31f7ba04 NC |
1154 | } |
1155 | ||
1156 | /* | |
1157 | INTERNAL_FUNCTION | |
1158 | separate_debug_file_exists | |
1159 | ||
1160 | SYNOPSIS | |
c58b9523 AM |
1161 | bfd_boolean separate_debug_file_exists |
1162 | (char *name, unsigned long crc32); | |
31f7ba04 NC |
1163 | |
1164 | DESCRIPTION | |
1165 | Checks to see if @var{name} is a file and if its contents | |
1166 | match @var{crc32}. | |
1167 | */ | |
1168 | ||
1169 | static bfd_boolean | |
c58b9523 | 1170 | separate_debug_file_exists (const char *name, const unsigned long crc) |
31f7ba04 | 1171 | { |
f075ee0c | 1172 | static unsigned char buffer [8 * 1024]; |
31f7ba04 NC |
1173 | unsigned long file_crc = 0; |
1174 | int fd; | |
2593f09a | 1175 | bfd_size_type count; |
31f7ba04 NC |
1176 | |
1177 | BFD_ASSERT (name); | |
1178 | ||
1179 | fd = open (name, O_RDONLY); | |
1180 | if (fd < 0) | |
1181 | return FALSE; | |
1182 | ||
1183 | while ((count = read (fd, buffer, sizeof (buffer))) > 0) | |
2593f09a | 1184 | file_crc = bfd_calc_gnu_debuglink_crc32 (file_crc, buffer, count); |
31f7ba04 NC |
1185 | |
1186 | close (fd); | |
1187 | ||
1188 | return crc == file_crc; | |
1189 | } | |
1190 | ||
1191 | ||
1192 | /* | |
1193 | INTERNAL_FUNCTION | |
1194 | find_separate_debug_file | |
1195 | ||
1196 | SYNOPSIS | |
c58b9523 | 1197 | char *find_separate_debug_file (bfd *abfd); |
31f7ba04 NC |
1198 | |
1199 | DESCRIPTION | |
1200 | Searches @var{abfd} for a reference to separate debugging | |
1201 | information, scans various locations in the filesystem, including | |
1202 | the file tree rooted at @var{debug_file_directory}, and returns a | |
1203 | filename of such debugging information if the file is found and has | |
1204 | matching CRC32. Returns NULL if no reference to debugging file | |
1205 | exists, or file cannot be found. | |
1206 | */ | |
1207 | ||
1208 | static char * | |
c58b9523 | 1209 | find_separate_debug_file (bfd *abfd, const char *debug_file_directory) |
31f7ba04 NC |
1210 | { |
1211 | char *basename; | |
1212 | char *dir; | |
1213 | char *debugfile; | |
1214 | unsigned long crc32; | |
1215 | int i; | |
1216 | ||
1217 | BFD_ASSERT (abfd); | |
1218 | if (debug_file_directory == NULL) | |
1219 | debug_file_directory = "."; | |
1220 | ||
1221 | /* BFD may have been opened from a stream. */ | |
1222 | if (! abfd->filename) | |
1223 | return NULL; | |
1224 | ||
1225 | basename = get_debug_link_info (abfd, & crc32); | |
5ed6aba4 | 1226 | if (basename == NULL) |
31f7ba04 | 1227 | return NULL; |
2593f09a | 1228 | |
5ed6aba4 NC |
1229 | if (strlen (basename) < 1) |
1230 | { | |
1231 | free (basename); | |
1232 | return NULL; | |
1233 | } | |
31f7ba04 | 1234 | |
2593f09a NC |
1235 | dir = strdup (abfd->filename); |
1236 | if (dir == NULL) | |
1237 | { | |
1238 | free (basename); | |
1239 | return NULL; | |
1240 | } | |
31f7ba04 | 1241 | BFD_ASSERT (strlen (dir) != 0); |
f12123c0 | 1242 | |
31f7ba04 NC |
1243 | /* Strip off filename part. */ |
1244 | for (i = strlen (dir) - 1; i >= 0; i--) | |
1245 | if (IS_DIR_SEPARATOR (dir[i])) | |
1246 | break; | |
28d39d1a | 1247 | |
31f7ba04 | 1248 | dir[i + 1] = '\0'; |
f12123c0 | 1249 | BFD_ASSERT (dir[i] == '/' || dir[0] == '\0'); |
31f7ba04 | 1250 | |
2593f09a NC |
1251 | debugfile = malloc (strlen (debug_file_directory) + 1 |
1252 | + strlen (dir) | |
1253 | + strlen (".debug/") | |
f12123c0 | 1254 | + strlen (basename) |
2593f09a NC |
1255 | + 1); |
1256 | if (debugfile == NULL) | |
1257 | { | |
1258 | free (basename); | |
1259 | free (dir); | |
1260 | return NULL; | |
1261 | } | |
31f7ba04 NC |
1262 | |
1263 | /* First try in the same directory as the original file: */ | |
1264 | strcpy (debugfile, dir); | |
1265 | strcat (debugfile, basename); | |
1266 | ||
1267 | if (separate_debug_file_exists (debugfile, crc32)) | |
1268 | { | |
1269 | free (basename); | |
1270 | free (dir); | |
1271 | return debugfile; | |
1272 | } | |
1273 | ||
1274 | /* Then try in a subdirectory called .debug. */ | |
1275 | strcpy (debugfile, dir); | |
1276 | strcat (debugfile, ".debug/"); | |
1277 | strcat (debugfile, basename); | |
1278 | ||
1279 | if (separate_debug_file_exists (debugfile, crc32)) | |
1280 | { | |
1281 | free (basename); | |
1282 | free (dir); | |
1283 | return debugfile; | |
1284 | } | |
1285 | ||
1286 | /* Then try in the global debugfile directory. */ | |
1287 | strcpy (debugfile, debug_file_directory); | |
1288 | i = strlen (debug_file_directory) - 1; | |
1289 | if (i > 0 | |
1290 | && debug_file_directory[i] != '/' | |
1291 | && dir[0] != '/') | |
1292 | strcat (debugfile, "/"); | |
1293 | strcat (debugfile, dir); | |
1294 | strcat (debugfile, basename); | |
1295 | ||
1296 | if (separate_debug_file_exists (debugfile, crc32)) | |
1297 | { | |
1298 | free (basename); | |
1299 | free (dir); | |
1300 | return debugfile; | |
1301 | } | |
1302 | ||
1303 | free (debugfile); | |
1304 | free (basename); | |
1305 | free (dir); | |
1306 | return NULL; | |
1307 | } | |
1308 | ||
1309 | ||
1310 | /* | |
1311 | FUNCTION | |
1312 | bfd_follow_gnu_debuglink | |
1313 | ||
1314 | SYNOPSIS | |
c58b9523 | 1315 | char *bfd_follow_gnu_debuglink (bfd *abfd, const char *dir); |
31f7ba04 NC |
1316 | |
1317 | DESCRIPTION | |
1318 | ||
1319 | Takes a BFD and searches it for a .gnu_debuglink section. If this | |
28d39d1a NC |
1320 | section is found, it examines the section for the name and checksum |
1321 | of a '.debug' file containing auxiliary debugging information. It | |
1322 | then searches the filesystem for this .debug file in some standard | |
31f7ba04 | 1323 | locations, including the directory tree rooted at @var{dir}, and if |
28d39d1a NC |
1324 | found returns the full filename. |
1325 | ||
1326 | If @var{dir} is NULL, it will search a default path configured into | |
1327 | libbfd at build time. [XXX this feature is not currently | |
1328 | implemented]. | |
31f7ba04 NC |
1329 | |
1330 | RETURNS | |
1331 | <<NULL>> on any errors or failure to locate the .debug file, | |
1332 | otherwise a pointer to a heap-allocated string containing the | |
28d39d1a | 1333 | filename. The caller is responsible for freeing this string. |
31f7ba04 NC |
1334 | */ |
1335 | ||
1336 | char * | |
c58b9523 | 1337 | bfd_follow_gnu_debuglink (bfd *abfd, const char *dir) |
31f7ba04 | 1338 | { |
31f7ba04 NC |
1339 | return find_separate_debug_file (abfd, dir); |
1340 | } | |
2593f09a NC |
1341 | |
1342 | /* | |
1343 | FUNCTION | |
e7c81c25 | 1344 | bfd_create_gnu_debuglink_section |
2593f09a NC |
1345 | |
1346 | SYNOPSIS | |
198beae2 | 1347 | struct bfd_section *bfd_create_gnu_debuglink_section |
c58b9523 | 1348 | (bfd *abfd, const char *filename); |
2593f09a NC |
1349 | |
1350 | DESCRIPTION | |
1351 | ||
e7c81c25 NC |
1352 | Takes a @var{BFD} and adds a .gnu_debuglink section to it. The section is sized |
1353 | to be big enough to contain a link to the specified @var{filename}. | |
1354 | ||
1355 | RETURNS | |
1356 | A pointer to the new section is returned if all is ok. Otherwise <<NULL>> is | |
f12123c0 | 1357 | returned and bfd_error is set. |
e7c81c25 NC |
1358 | */ |
1359 | ||
1360 | asection * | |
c58b9523 | 1361 | bfd_create_gnu_debuglink_section (bfd *abfd, const char *filename) |
e7c81c25 | 1362 | { |
c58b9523 AM |
1363 | asection *sect; |
1364 | bfd_size_type debuglink_size; | |
117ed4f8 | 1365 | flagword flags; |
e7c81c25 NC |
1366 | |
1367 | if (abfd == NULL || filename == NULL) | |
1368 | { | |
1369 | bfd_set_error (bfd_error_invalid_operation); | |
1370 | return NULL; | |
1371 | } | |
1372 | ||
1373 | /* Strip off any path components in filename. */ | |
1374 | filename = lbasename (filename); | |
f12123c0 | 1375 | |
e7c81c25 NC |
1376 | sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK); |
1377 | if (sect) | |
1378 | { | |
1379 | /* Section already exists. */ | |
1380 | bfd_set_error (bfd_error_invalid_operation); | |
1381 | return NULL; | |
1382 | } | |
1383 | ||
117ed4f8 AM |
1384 | flags = SEC_HAS_CONTENTS | SEC_READONLY | SEC_DEBUGGING; |
1385 | sect = bfd_make_section_with_flags (abfd, GNU_DEBUGLINK, flags); | |
e7c81c25 NC |
1386 | if (sect == NULL) |
1387 | return NULL; | |
1388 | ||
e7c81c25 NC |
1389 | debuglink_size = strlen (filename) + 1; |
1390 | debuglink_size += 3; | |
1391 | debuglink_size &= ~3; | |
1392 | debuglink_size += 4; | |
1393 | ||
1394 | if (! bfd_set_section_size (abfd, sect, debuglink_size)) | |
1395 | /* XXX Should we delete the section from the bfd ? */ | |
1396 | return NULL; | |
f12123c0 | 1397 | |
e7c81c25 NC |
1398 | return sect; |
1399 | } | |
1400 | ||
1401 | ||
1402 | /* | |
1403 | FUNCTION | |
1404 | bfd_fill_in_gnu_debuglink_section | |
1405 | ||
1406 | SYNOPSIS | |
c58b9523 | 1407 | bfd_boolean bfd_fill_in_gnu_debuglink_section |
198beae2 | 1408 | (bfd *abfd, struct bfd_section *sect, const char *filename); |
e7c81c25 NC |
1409 | |
1410 | DESCRIPTION | |
1411 | ||
1412 | Takes a @var{BFD} and containing a .gnu_debuglink section @var{SECT} | |
1413 | and fills in the contents of the section to contain a link to the | |
1414 | specified @var{filename}. The filename should be relative to the | |
1415 | current directory. | |
2593f09a NC |
1416 | |
1417 | RETURNS | |
1418 | <<TRUE>> is returned if all is ok. Otherwise <<FALSE>> is returned | |
f12123c0 | 1419 | and bfd_error is set. |
2593f09a NC |
1420 | */ |
1421 | ||
1422 | bfd_boolean | |
c58b9523 | 1423 | bfd_fill_in_gnu_debuglink_section (bfd *abfd, |
198beae2 | 1424 | struct bfd_section *sect, |
c58b9523 | 1425 | const char *filename) |
2593f09a | 1426 | { |
2593f09a NC |
1427 | bfd_size_type debuglink_size; |
1428 | unsigned long crc32; | |
1429 | char * contents; | |
1430 | bfd_size_type crc_offset; | |
1431 | FILE * handle; | |
f075ee0c | 1432 | static unsigned char buffer[8 * 1024]; |
2593f09a NC |
1433 | size_t count; |
1434 | ||
e7c81c25 | 1435 | if (abfd == NULL || sect == NULL || filename == NULL) |
2593f09a NC |
1436 | { |
1437 | bfd_set_error (bfd_error_invalid_operation); | |
1438 | return FALSE; | |
1439 | } | |
1440 | ||
1441 | /* Make sure that we can read the file. | |
1442 | XXX - Should we attempt to locate the debug info file using the same | |
1443 | algorithm as gdb ? At the moment, since we are creating the | |
1444 | .gnu_debuglink section, we insist upon the user providing us with a | |
1445 | correct-for-section-creation-time path, but this need not conform to | |
1446 | the gdb location algorithm. */ | |
2e6f4fae | 1447 | handle = real_fopen (filename, FOPEN_RB); |
2593f09a NC |
1448 | if (handle == NULL) |
1449 | { | |
1450 | bfd_set_error (bfd_error_system_call); | |
1451 | return FALSE; | |
1452 | } | |
1453 | ||
1454 | crc32 = 0; | |
1455 | while ((count = fread (buffer, 1, sizeof buffer, handle)) > 0) | |
1456 | crc32 = bfd_calc_gnu_debuglink_crc32 (crc32, buffer, count); | |
1457 | fclose (handle); | |
1458 | ||
1459 | /* Strip off any path components in filename, | |
1460 | now that we no longer need them. */ | |
1461 | filename = lbasename (filename); | |
f12123c0 | 1462 | |
2593f09a NC |
1463 | debuglink_size = strlen (filename) + 1; |
1464 | debuglink_size += 3; | |
1465 | debuglink_size &= ~3; | |
1466 | debuglink_size += 4; | |
1467 | ||
2593f09a NC |
1468 | contents = malloc (debuglink_size); |
1469 | if (contents == NULL) | |
1470 | { | |
1471 | /* XXX Should we delete the section from the bfd ? */ | |
1472 | bfd_set_error (bfd_error_no_memory); | |
1473 | return FALSE; | |
1474 | } | |
1475 | ||
1476 | strcpy (contents, filename); | |
1477 | crc_offset = debuglink_size - 4; | |
1478 | ||
c58b9523 | 1479 | bfd_put_32 (abfd, crc32, contents + crc_offset); |
2593f09a | 1480 | |
c58b9523 | 1481 | if (! bfd_set_section_contents (abfd, sect, contents, 0, debuglink_size)) |
2593f09a NC |
1482 | { |
1483 | /* XXX Should we delete the section from the bfd ? */ | |
1484 | free (contents); | |
1485 | return FALSE; | |
1486 | } | |
1487 | ||
1488 | return TRUE; | |
1489 | } |