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, |
6f0c7050 | 3 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 |
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 | |
cd123cb7 | 12 | the Free Software Foundation; either version 3 of the License, or |
c4f3d130 | 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 | |
cd123cb7 NC |
22 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
23 | MA 02110-1301, USA. */ | |
252b5132 | 24 | |
252b5132 | 25 | #include "sysdep.h" |
3db64b00 | 26 | #include "bfd.h" |
252b5132 RH |
27 | #include "objalloc.h" |
28 | #include "libbfd.h" | |
31f7ba04 | 29 | #include "libiberty.h" |
252b5132 RH |
30 | |
31 | #ifndef S_IXUSR | |
32 | #define S_IXUSR 0100 /* Execute by owner. */ | |
33 | #endif | |
34 | #ifndef S_IXGRP | |
35 | #define S_IXGRP 0010 /* Execute by group. */ | |
36 | #endif | |
37 | #ifndef S_IXOTH | |
38 | #define S_IXOTH 0001 /* Execute by others. */ | |
39 | #endif | |
40 | ||
fc1cfaa5 | 41 | /* Counters used to initialize the bfd identifier. */ |
52b69c9e | 42 | |
fc1cfaa5 AM |
43 | static unsigned int bfd_id_counter = 0; |
44 | static unsigned int bfd_reserved_id_counter = 0; | |
45 | ||
46 | /* | |
47 | CODE_FRAGMENT | |
48 | .{* Set to N to open the next N BFDs using an alternate id space. *} | |
49 | .extern unsigned int bfd_use_reserved_id; | |
50 | */ | |
51 | unsigned int bfd_use_reserved_id = 0; | |
52b69c9e | 52 | |
252b5132 RH |
53 | /* fdopen is a loser -- we should use stdio exclusively. Unfortunately |
54 | if we do that we can't use fcntl. */ | |
55 | ||
252b5132 RH |
56 | /* Return a new BFD. All BFD's are allocated through this routine. */ |
57 | ||
58 | bfd * | |
c58b9523 | 59 | _bfd_new_bfd (void) |
252b5132 RH |
60 | { |
61 | bfd *nbfd; | |
62 | ||
a50b1753 | 63 | nbfd = (bfd *) bfd_zmalloc (sizeof (bfd)); |
252b5132 RH |
64 | if (nbfd == NULL) |
65 | return NULL; | |
66 | ||
fc1cfaa5 AM |
67 | if (bfd_use_reserved_id) |
68 | { | |
69 | nbfd->id = --bfd_reserved_id_counter; | |
70 | --bfd_use_reserved_id; | |
71 | } | |
72 | else | |
73 | nbfd->id = bfd_id_counter++; | |
52b69c9e | 74 | |
c58b9523 | 75 | nbfd->memory = objalloc_create (); |
252b5132 RH |
76 | if (nbfd->memory == NULL) |
77 | { | |
78 | bfd_set_error (bfd_error_no_memory); | |
73e87d70 | 79 | free (nbfd); |
252b5132 RH |
80 | return NULL; |
81 | } | |
82 | ||
83 | nbfd->arch_info = &bfd_default_arch_struct; | |
84 | ||
85 | nbfd->direction = no_direction; | |
86 | nbfd->iostream = NULL; | |
87 | nbfd->where = 0; | |
28d39d1a | 88 | if (!bfd_hash_table_init_n (& nbfd->section_htab, bfd_section_hash_newfunc, |
66eb6687 | 89 | sizeof (struct section_hash_entry), 251)) |
73e87d70 AM |
90 | { |
91 | free (nbfd); | |
92 | return NULL; | |
93 | } | |
c58b9523 | 94 | nbfd->sections = NULL; |
5daa8fe7 | 95 | nbfd->section_last = NULL; |
252b5132 | 96 | nbfd->format = bfd_unknown; |
c58b9523 | 97 | nbfd->my_archive = NULL; |
dc810e39 | 98 | nbfd->origin = 0; |
b34976b6 AM |
99 | nbfd->opened_once = FALSE; |
100 | nbfd->output_has_begun = FALSE; | |
252b5132 | 101 | nbfd->section_count = 0; |
c58b9523 | 102 | nbfd->usrdata = NULL; |
b34976b6 | 103 | nbfd->cacheable = FALSE; |
252b5132 | 104 | nbfd->flags = BFD_NO_FLAGS; |
b34976b6 | 105 | nbfd->mtime_set = FALSE; |
252b5132 RH |
106 | |
107 | return nbfd; | |
108 | } | |
109 | ||
110 | /* Allocate a new BFD as a member of archive OBFD. */ | |
111 | ||
112 | bfd * | |
c58b9523 | 113 | _bfd_new_bfd_contained_in (bfd *obfd) |
252b5132 RH |
114 | { |
115 | bfd *nbfd; | |
116 | ||
117 | nbfd = _bfd_new_bfd (); | |
301e3139 AM |
118 | if (nbfd == NULL) |
119 | return NULL; | |
252b5132 | 120 | nbfd->xvec = obfd->xvec; |
40838a72 | 121 | nbfd->iovec = obfd->iovec; |
252b5132 RH |
122 | nbfd->my_archive = obfd; |
123 | nbfd->direction = read_direction; | |
124 | nbfd->target_defaulted = obfd->target_defaulted; | |
125 | return nbfd; | |
126 | } | |
127 | ||
73e87d70 AM |
128 | /* Delete a BFD. */ |
129 | ||
7b84f8da | 130 | static void |
c58b9523 | 131 | _bfd_delete_bfd (bfd *abfd) |
73e87d70 | 132 | { |
a988325c NC |
133 | if (abfd->format == bfd_archive) |
134 | _bfd_delete_archive_data (abfd); | |
135 | ||
b25e3d87 L |
136 | if (abfd->memory) |
137 | { | |
138 | bfd_hash_table_free (&abfd->section_htab); | |
139 | objalloc_free ((struct objalloc *) abfd->memory); | |
140 | } | |
a988325c | 141 | |
73e87d70 AM |
142 | free (abfd); |
143 | } | |
144 | ||
b25e3d87 L |
145 | /* Free objalloc memory. */ |
146 | ||
147 | bfd_boolean | |
148 | _bfd_free_cached_info (bfd *abfd) | |
149 | { | |
150 | if (abfd->memory) | |
151 | { | |
152 | bfd_hash_table_free (&abfd->section_htab); | |
153 | objalloc_free ((struct objalloc *) abfd->memory); | |
154 | ||
155 | abfd->sections = NULL; | |
156 | abfd->section_last = NULL; | |
157 | abfd->outsymbols = NULL; | |
158 | abfd->tdata.any = NULL; | |
159 | abfd->usrdata = NULL; | |
160 | abfd->memory = NULL; | |
161 | } | |
162 | ||
163 | return TRUE; | |
164 | } | |
165 | ||
252b5132 RH |
166 | /* |
167 | SECTION | |
168 | Opening and closing BFDs | |
169 | ||
1b74d094 BW |
170 | SUBSECTION |
171 | Functions for opening and closing | |
252b5132 RH |
172 | */ |
173 | ||
174 | /* | |
175 | FUNCTION | |
2d0123b7 | 176 | bfd_fopen |
252b5132 RH |
177 | |
178 | SYNOPSIS | |
2d0123b7 MM |
179 | bfd *bfd_fopen (const char *filename, const char *target, |
180 | const char *mode, int fd); | |
252b5132 RH |
181 | |
182 | DESCRIPTION | |
2d0123b7 MM |
183 | Open the file @var{filename} with the target @var{target}. |
184 | Return a pointer to the created BFD. If @var{fd} is not -1, | |
185 | then <<fdopen>> is used to open the file; otherwise, <<fopen>> | |
186 | is used. @var{mode} is passed directly to <<fopen>> or | |
187 | <<fdopen>>. | |
252b5132 RH |
188 | |
189 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
190 | that function. | |
191 | ||
a366f4ff MM |
192 | The new BFD is marked as cacheable iff @var{fd} is -1. |
193 | ||
252b5132 | 194 | If <<NULL>> is returned then an error has occured. Possible errors |
7c4a37eb AM |
195 | are <<bfd_error_no_memory>>, <<bfd_error_invalid_target>> or |
196 | <<system_call>> error. | |
6f0c7050 TT |
197 | |
198 | On error, @var{fd} is always closed. | |
252b5132 RH |
199 | */ |
200 | ||
201 | bfd * | |
2d0123b7 | 202 | bfd_fopen (const char *filename, const char *target, const char *mode, int fd) |
252b5132 RH |
203 | { |
204 | bfd *nbfd; | |
205 | const bfd_target *target_vec; | |
206 | ||
207 | nbfd = _bfd_new_bfd (); | |
208 | if (nbfd == NULL) | |
6f0c7050 TT |
209 | { |
210 | if (fd != -1) | |
211 | close (fd); | |
212 | return NULL; | |
213 | } | |
252b5132 RH |
214 | |
215 | target_vec = bfd_find_target (target, nbfd); | |
216 | if (target_vec == NULL) | |
217 | { | |
6f0c7050 TT |
218 | if (fd != -1) |
219 | close (fd); | |
73e87d70 | 220 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
221 | return NULL; |
222 | } | |
2d0123b7 MM |
223 | |
224 | #ifdef HAVE_FDOPEN | |
225 | if (fd != -1) | |
226 | nbfd->iostream = fdopen (fd, mode); | |
227 | else | |
228 | #endif | |
2e6f4fae | 229 | nbfd->iostream = real_fopen (filename, mode); |
2d0123b7 MM |
230 | if (nbfd->iostream == NULL) |
231 | { | |
92a7c1b8 | 232 | bfd_set_error (bfd_error_system_call); |
2d0123b7 MM |
233 | _bfd_delete_bfd (nbfd); |
234 | return NULL; | |
235 | } | |
252b5132 | 236 | |
2d0123b7 | 237 | /* OK, put everything where it belongs. */ |
252b5132 | 238 | nbfd->filename = filename; |
252b5132 | 239 | |
2d0123b7 MM |
240 | /* Figure out whether the user is opening the file for reading, |
241 | writing, or both, by looking at the MODE argument. */ | |
242 | if ((mode[0] == 'r' || mode[0] == 'w' || mode[0] == 'a') | |
243 | && mode[1] == '+') | |
244 | nbfd->direction = both_direction; | |
245 | else if (mode[0] == 'r') | |
246 | nbfd->direction = read_direction; | |
247 | else | |
248 | nbfd->direction = write_direction; | |
249 | ||
250 | if (! bfd_cache_init (nbfd)) | |
252b5132 | 251 | { |
73e87d70 | 252 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
253 | return NULL; |
254 | } | |
2d0123b7 | 255 | nbfd->opened_once = TRUE; |
a366f4ff MM |
256 | /* If we opened the file by name, mark it cacheable; we can close it |
257 | and reopen it later. However, if a file descriptor was provided, | |
258 | then it may have been opened with special flags that make it | |
259 | unsafe to close and reopen the file. */ | |
260 | if (fd == -1) | |
261 | bfd_set_cacheable (nbfd, TRUE); | |
252b5132 RH |
262 | |
263 | return nbfd; | |
264 | } | |
265 | ||
2d0123b7 MM |
266 | /* |
267 | FUNCTION | |
268 | bfd_openr | |
269 | ||
270 | SYNOPSIS | |
271 | bfd *bfd_openr (const char *filename, const char *target); | |
272 | ||
273 | DESCRIPTION | |
274 | Open the file @var{filename} (using <<fopen>>) with the target | |
275 | @var{target}. Return a pointer to the created BFD. | |
276 | ||
277 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
278 | that function. | |
279 | ||
280 | If <<NULL>> is returned then an error has occured. Possible errors | |
281 | are <<bfd_error_no_memory>>, <<bfd_error_invalid_target>> or | |
282 | <<system_call>> error. | |
283 | */ | |
284 | ||
285 | bfd * | |
286 | bfd_openr (const char *filename, const char *target) | |
287 | { | |
288 | return bfd_fopen (filename, target, FOPEN_RB, -1); | |
289 | } | |
290 | ||
252b5132 RH |
291 | /* Don't try to `optimize' this function: |
292 | ||
293 | o - We lock using stack space so that interrupting the locking | |
294 | won't cause a storage leak. | |
295 | o - We open the file stream last, since we don't want to have to | |
296 | close it if anything goes wrong. Closing the stream means closing | |
c4f3d130 | 297 | the file descriptor too, even though we didn't open it. */ |
252b5132 RH |
298 | /* |
299 | FUNCTION | |
7c4a37eb | 300 | bfd_fdopenr |
252b5132 RH |
301 | |
302 | SYNOPSIS | |
c58b9523 | 303 | bfd *bfd_fdopenr (const char *filename, const char *target, int fd); |
252b5132 RH |
304 | |
305 | DESCRIPTION | |
7c4a37eb AM |
306 | <<bfd_fdopenr>> is to <<bfd_fopenr>> much like <<fdopen>> is to |
307 | <<fopen>>. It opens a BFD on a file already described by the | |
308 | @var{fd} supplied. | |
309 | ||
310 | When the file is later <<bfd_close>>d, the file descriptor will | |
311 | be closed. If the caller desires that this file descriptor be | |
312 | cached by BFD (opened as needed, closed as needed to free | |
313 | descriptors for other opens), with the supplied @var{fd} used as | |
314 | an initial file descriptor (but subject to closure at any time), | |
315 | call bfd_set_cacheable(bfd, 1) on the returned BFD. The default | |
7dee875e | 316 | is to assume no caching; the file descriptor will remain open |
7c4a37eb AM |
317 | until <<bfd_close>>, and will not be affected by BFD operations |
318 | on other files. | |
319 | ||
320 | Possible errors are <<bfd_error_no_memory>>, | |
321 | <<bfd_error_invalid_target>> and <<bfd_error_system_call>>. | |
6f0c7050 TT |
322 | |
323 | On error, @var{fd} is closed. | |
252b5132 RH |
324 | */ |
325 | ||
326 | bfd * | |
c58b9523 | 327 | bfd_fdopenr (const char *filename, const char *target, int fd) |
252b5132 | 328 | { |
2d0123b7 MM |
329 | const char *mode; |
330 | #if defined(HAVE_FCNTL) && defined(F_GETFL) | |
252b5132 | 331 | int fdflags; |
2d0123b7 | 332 | #endif |
252b5132 | 333 | |
252b5132 | 334 | #if ! defined(HAVE_FCNTL) || ! defined(F_GETFL) |
2d0123b7 | 335 | mode = FOPEN_RUB; /* Assume full access. */ |
252b5132 RH |
336 | #else |
337 | fdflags = fcntl (fd, F_GETFL, NULL); | |
767e34d1 | 338 | if (fdflags == -1) |
d83747fa | 339 | { |
6f0c7050 TT |
340 | int save = errno; |
341 | ||
342 | close (fd); | |
343 | errno = save; | |
d83747fa AM |
344 | bfd_set_error (bfd_error_system_call); |
345 | return NULL; | |
346 | } | |
252b5132 | 347 | |
c4f3d130 | 348 | /* (O_ACCMODE) parens are to avoid Ultrix header file bug. */ |
252b5132 RH |
349 | switch (fdflags & (O_ACCMODE)) |
350 | { | |
dfab97d6 MM |
351 | case O_RDONLY: mode = FOPEN_RB; break; |
352 | case O_WRONLY: mode = FOPEN_RUB; break; | |
353 | case O_RDWR: mode = FOPEN_RUB; break; | |
252b5132 RH |
354 | default: abort (); |
355 | } | |
356 | #endif | |
357 | ||
2d0123b7 | 358 | return bfd_fopen (filename, target, mode, fd); |
252b5132 RH |
359 | } |
360 | ||
361 | /* | |
362 | FUNCTION | |
363 | bfd_openstreamr | |
364 | ||
365 | SYNOPSIS | |
c58b9523 | 366 | bfd *bfd_openstreamr (const char *, const char *, void *); |
252b5132 RH |
367 | |
368 | DESCRIPTION | |
369 | ||
370 | Open a BFD for read access on an existing stdio stream. When | |
371 | the BFD is passed to <<bfd_close>>, the stream will be closed. | |
372 | */ | |
373 | ||
374 | bfd * | |
c58b9523 | 375 | bfd_openstreamr (const char *filename, const char *target, void *streamarg) |
252b5132 | 376 | { |
a50b1753 | 377 | FILE *stream = (FILE *) streamarg; |
252b5132 RH |
378 | bfd *nbfd; |
379 | const bfd_target *target_vec; | |
380 | ||
381 | nbfd = _bfd_new_bfd (); | |
382 | if (nbfd == NULL) | |
383 | return NULL; | |
384 | ||
385 | target_vec = bfd_find_target (target, nbfd); | |
386 | if (target_vec == NULL) | |
387 | { | |
73e87d70 | 388 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
389 | return NULL; |
390 | } | |
391 | ||
c58b9523 | 392 | nbfd->iostream = stream; |
252b5132 RH |
393 | nbfd->filename = filename; |
394 | nbfd->direction = read_direction; | |
dc810e39 | 395 | |
252b5132 RH |
396 | if (! bfd_cache_init (nbfd)) |
397 | { | |
73e87d70 | 398 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
399 | return NULL; |
400 | } | |
401 | ||
402 | return nbfd; | |
403 | } | |
40838a72 AC |
404 | |
405 | /* | |
406 | FUNCTION | |
407 | bfd_openr_iovec | |
408 | ||
409 | SYNOPSIS | |
410 | bfd *bfd_openr_iovec (const char *filename, const char *target, | |
e7f8eadb DK |
411 | void *(*open_func) (struct bfd *nbfd, |
412 | void *open_closure), | |
40838a72 | 413 | void *open_closure, |
e7f8eadb DK |
414 | file_ptr (*pread_func) (struct bfd *nbfd, |
415 | void *stream, | |
416 | void *buf, | |
417 | file_ptr nbytes, | |
418 | file_ptr offset), | |
419 | int (*close_func) (struct bfd *nbfd, | |
420 | void *stream), | |
421 | int (*stat_func) (struct bfd *abfd, | |
422 | void *stream, | |
423 | struct stat *sb)); | |
40838a72 AC |
424 | |
425 | DESCRIPTION | |
426 | ||
427 | Create and return a BFD backed by a read-only @var{stream}. | |
e7f8eadb DK |
428 | The @var{stream} is created using @var{open_func}, accessed using |
429 | @var{pread_func} and destroyed using @var{close_func}. | |
40838a72 AC |
430 | |
431 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
432 | that function. | |
433 | ||
e7f8eadb | 434 | Calls @var{open_func} (which can call <<bfd_zalloc>> and |
40838a72 | 435 | <<bfd_get_filename>>) to obtain the read-only stream backing |
e7f8eadb | 436 | the BFD. @var{open_func} either succeeds returning the |
40838a72 AC |
437 | non-<<NULL>> @var{stream}, or fails returning <<NULL>> |
438 | (setting <<bfd_error>>). | |
439 | ||
e7f8eadb | 440 | Calls @var{pread_func} to request @var{nbytes} of data from |
40838a72 | 441 | @var{stream} starting at @var{offset} (e.g., via a call to |
e7f8eadb | 442 | <<bfd_read>>). @var{pread_func} either succeeds returning the |
40838a72 AC |
443 | number of bytes read (which can be less than @var{nbytes} when |
444 | end-of-file), or fails returning -1 (setting <<bfd_error>>). | |
445 | ||
e7f8eadb DK |
446 | Calls @var{close_func} when the BFD is later closed using |
447 | <<bfd_close>>. @var{close_func} either succeeds returning 0, or | |
40838a72 AC |
448 | fails returning -1 (setting <<bfd_error>>). |
449 | ||
e7f8eadb DK |
450 | Calls @var{stat_func} to fill in a stat structure for bfd_stat, |
451 | bfd_get_size, and bfd_get_mtime calls. @var{stat_func} returns 0 | |
f6cf9273 AM |
452 | on success, or returns -1 on failure (setting <<bfd_error>>). |
453 | ||
40838a72 AC |
454 | If <<bfd_openr_iovec>> returns <<NULL>> then an error has |
455 | occurred. Possible errors are <<bfd_error_no_memory>>, | |
456 | <<bfd_error_invalid_target>> and <<bfd_error_system_call>>. | |
457 | ||
458 | */ | |
459 | ||
460 | struct opncls | |
461 | { | |
462 | void *stream; | |
463 | file_ptr (*pread) (struct bfd *abfd, void *stream, void *buf, | |
464 | file_ptr nbytes, file_ptr offset); | |
465 | int (*close) (struct bfd *abfd, void *stream); | |
f6cf9273 | 466 | int (*stat) (struct bfd *abfd, void *stream, struct stat *sb); |
40838a72 AC |
467 | file_ptr where; |
468 | }; | |
469 | ||
470 | static file_ptr | |
471 | opncls_btell (struct bfd *abfd) | |
472 | { | |
a50b1753 | 473 | struct opncls *vec = (struct opncls *) abfd->iostream; |
40838a72 AC |
474 | return vec->where; |
475 | } | |
476 | ||
477 | static int | |
478 | opncls_bseek (struct bfd *abfd, file_ptr offset, int whence) | |
479 | { | |
a50b1753 | 480 | struct opncls *vec = (struct opncls *) abfd->iostream; |
40838a72 AC |
481 | switch (whence) |
482 | { | |
483 | case SEEK_SET: vec->where = offset; break; | |
484 | case SEEK_CUR: vec->where += offset; break; | |
485 | case SEEK_END: return -1; | |
486 | } | |
487 | return 0; | |
488 | } | |
489 | ||
490 | static file_ptr | |
491 | opncls_bread (struct bfd *abfd, void *buf, file_ptr nbytes) | |
492 | { | |
a50b1753 | 493 | struct opncls *vec = (struct opncls *) abfd->iostream; |
0709bb22 | 494 | file_ptr nread = (vec->pread) (abfd, vec->stream, buf, nbytes, vec->where); |
40838a72 AC |
495 | if (nread < 0) |
496 | return nread; | |
497 | vec->where += nread; | |
498 | return nread; | |
499 | } | |
500 | ||
501 | static file_ptr | |
502 | opncls_bwrite (struct bfd *abfd ATTRIBUTE_UNUSED, | |
503 | const void *where ATTRIBUTE_UNUSED, | |
504 | file_ptr nbytes ATTRIBUTE_UNUSED) | |
505 | { | |
506 | return -1; | |
507 | } | |
508 | ||
509 | static int | |
510 | opncls_bclose (struct bfd *abfd) | |
511 | { | |
a50b1753 | 512 | struct opncls *vec = (struct opncls *) abfd->iostream; |
40838a72 AC |
513 | /* Since the VEC's memory is bound to the bfd deleting the bfd will |
514 | free it. */ | |
515 | int status = 0; | |
516 | if (vec->close != NULL) | |
0709bb22 | 517 | status = (vec->close) (abfd, vec->stream); |
40838a72 AC |
518 | abfd->iostream = NULL; |
519 | return status; | |
520 | } | |
521 | ||
522 | static int | |
523 | opncls_bflush (struct bfd *abfd ATTRIBUTE_UNUSED) | |
524 | { | |
525 | return 0; | |
526 | } | |
527 | ||
528 | static int | |
f6cf9273 | 529 | opncls_bstat (struct bfd *abfd, struct stat *sb) |
40838a72 | 530 | { |
a50b1753 | 531 | struct opncls *vec = (struct opncls *) abfd->iostream; |
f6cf9273 | 532 | |
40838a72 | 533 | memset (sb, 0, sizeof (*sb)); |
f6cf9273 AM |
534 | if (vec->stat == NULL) |
535 | return 0; | |
536 | ||
537 | return (vec->stat) (abfd, vec->stream, sb); | |
40838a72 AC |
538 | } |
539 | ||
25b88f33 PP |
540 | static void * |
541 | opncls_bmmap (struct bfd *abfd ATTRIBUTE_UNUSED, | |
542 | void *addr ATTRIBUTE_UNUSED, | |
543 | bfd_size_type len ATTRIBUTE_UNUSED, | |
544 | int prot ATTRIBUTE_UNUSED, | |
545 | int flags ATTRIBUTE_UNUSED, | |
4c95ab76 TG |
546 | file_ptr offset ATTRIBUTE_UNUSED, |
547 | void **map_addr ATTRIBUTE_UNUSED, | |
548 | bfd_size_type *map_len ATTRIBUTE_UNUSED) | |
25b88f33 PP |
549 | { |
550 | return (void *) -1; | |
551 | } | |
552 | ||
40838a72 AC |
553 | static const struct bfd_iovec opncls_iovec = { |
554 | &opncls_bread, &opncls_bwrite, &opncls_btell, &opncls_bseek, | |
25b88f33 | 555 | &opncls_bclose, &opncls_bflush, &opncls_bstat, &opncls_bmmap |
40838a72 AC |
556 | }; |
557 | ||
558 | bfd * | |
559 | bfd_openr_iovec (const char *filename, const char *target, | |
662e4701 | 560 | void *(*open_p) (struct bfd *, void *), |
40838a72 | 561 | void *open_closure, |
662e4701 L |
562 | file_ptr (*pread_p) (struct bfd *, void *, void *, |
563 | file_ptr, file_ptr), | |
564 | int (*close_p) (struct bfd *, void *), | |
565 | int (*stat_p) (struct bfd *, void *, struct stat *)) | |
40838a72 AC |
566 | { |
567 | bfd *nbfd; | |
568 | const bfd_target *target_vec; | |
569 | struct opncls *vec; | |
570 | void *stream; | |
571 | ||
572 | nbfd = _bfd_new_bfd (); | |
573 | if (nbfd == NULL) | |
574 | return NULL; | |
575 | ||
576 | target_vec = bfd_find_target (target, nbfd); | |
577 | if (target_vec == NULL) | |
578 | { | |
579 | _bfd_delete_bfd (nbfd); | |
580 | return NULL; | |
581 | } | |
582 | ||
583 | nbfd->filename = filename; | |
584 | nbfd->direction = read_direction; | |
585 | ||
662e4701 L |
586 | /* `open_p (...)' would get expanded by an the open(2) syscall macro. */ |
587 | stream = (*open_p) (nbfd, open_closure); | |
40838a72 AC |
588 | if (stream == NULL) |
589 | { | |
590 | _bfd_delete_bfd (nbfd); | |
591 | return NULL; | |
592 | } | |
593 | ||
a50b1753 | 594 | vec = (struct opncls *) bfd_zalloc (nbfd, sizeof (struct opncls)); |
40838a72 | 595 | vec->stream = stream; |
662e4701 L |
596 | vec->pread = pread_p; |
597 | vec->close = close_p; | |
598 | vec->stat = stat_p; | |
40838a72 AC |
599 | |
600 | nbfd->iovec = &opncls_iovec; | |
601 | nbfd->iostream = vec; | |
602 | ||
603 | return nbfd; | |
604 | } | |
252b5132 | 605 | \f |
c4f3d130 NC |
606 | /* bfd_openw -- open for writing. |
607 | Returns a pointer to a freshly-allocated BFD on success, or NULL. | |
252b5132 | 608 | |
c4f3d130 | 609 | See comment by bfd_fdopenr before you try to modify this function. */ |
252b5132 RH |
610 | |
611 | /* | |
612 | FUNCTION | |
613 | bfd_openw | |
614 | ||
615 | SYNOPSIS | |
c58b9523 | 616 | bfd *bfd_openw (const char *filename, const char *target); |
252b5132 RH |
617 | |
618 | DESCRIPTION | |
619 | Create a BFD, associated with file @var{filename}, using the | |
620 | file format @var{target}, and return a pointer to it. | |
621 | ||
622 | Possible errors are <<bfd_error_system_call>>, <<bfd_error_no_memory>>, | |
623 | <<bfd_error_invalid_target>>. | |
624 | */ | |
625 | ||
626 | bfd * | |
c58b9523 | 627 | bfd_openw (const char *filename, const char *target) |
252b5132 RH |
628 | { |
629 | bfd *nbfd; | |
630 | const bfd_target *target_vec; | |
631 | ||
252b5132 | 632 | /* nbfd has to point to head of malloc'ed block so that bfd_close may |
c4f3d130 | 633 | reclaim it correctly. */ |
252b5132 RH |
634 | nbfd = _bfd_new_bfd (); |
635 | if (nbfd == NULL) | |
636 | return NULL; | |
637 | ||
638 | target_vec = bfd_find_target (target, nbfd); | |
639 | if (target_vec == NULL) | |
640 | { | |
73e87d70 | 641 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
642 | return NULL; |
643 | } | |
644 | ||
645 | nbfd->filename = filename; | |
646 | nbfd->direction = write_direction; | |
647 | ||
648 | if (bfd_open_file (nbfd) == NULL) | |
649 | { | |
c4f3d130 NC |
650 | /* File not writeable, etc. */ |
651 | bfd_set_error (bfd_error_system_call); | |
73e87d70 | 652 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
653 | return NULL; |
654 | } | |
655 | ||
656 | return nbfd; | |
657 | } | |
658 | ||
8c7d38e8 NC |
659 | static inline void |
660 | _maybe_make_executable (bfd * abfd) | |
661 | { | |
662 | /* If the file was open for writing and is now executable, | |
663 | make it so. */ | |
664 | if (abfd->direction == write_direction | |
dbde1c12 | 665 | && (abfd->flags & (EXEC_P | DYNAMIC)) != 0) |
8c7d38e8 NC |
666 | { |
667 | struct stat buf; | |
668 | ||
669 | if (stat (abfd->filename, &buf) == 0 | |
670 | /* Do not attempt to change non-regular files. This is | |
671 | here especially for configure scripts and kernel builds | |
672 | which run tests with "ld [...] -o /dev/null". */ | |
673 | && S_ISREG(buf.st_mode)) | |
674 | { | |
675 | unsigned int mask = umask (0); | |
676 | ||
677 | umask (mask); | |
678 | chmod (abfd->filename, | |
679 | (0777 | |
680 | & (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask)))); | |
681 | } | |
682 | } | |
683 | } | |
684 | ||
252b5132 RH |
685 | /* |
686 | ||
687 | FUNCTION | |
688 | bfd_close | |
689 | ||
690 | SYNOPSIS | |
b34976b6 | 691 | bfd_boolean bfd_close (bfd *abfd); |
252b5132 RH |
692 | |
693 | DESCRIPTION | |
694 | ||
7c4a37eb AM |
695 | Close a BFD. If the BFD was open for writing, then pending |
696 | operations are completed and the file written out and closed. | |
697 | If the created file is executable, then <<chmod>> is called | |
698 | to mark it as such. | |
252b5132 RH |
699 | |
700 | All memory attached to the BFD is released. | |
701 | ||
702 | The file descriptor associated with the BFD is closed (even | |
703 | if it was passed in to BFD by <<bfd_fdopenr>>). | |
704 | ||
705 | RETURNS | |
b34976b6 | 706 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
707 | */ |
708 | ||
709 | ||
b34976b6 | 710 | bfd_boolean |
c58b9523 | 711 | bfd_close (bfd *abfd) |
252b5132 | 712 | { |
b34976b6 | 713 | bfd_boolean ret; |
a8da6403 NC |
714 | bfd *nbfd; |
715 | bfd *next; | |
252b5132 | 716 | |
c4f3d130 | 717 | if (bfd_write_p (abfd)) |
252b5132 RH |
718 | { |
719 | if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd))) | |
b34976b6 | 720 | return FALSE; |
252b5132 RH |
721 | } |
722 | ||
a8da6403 NC |
723 | /* Close nested archives (if this bfd is a thin archive). */ |
724 | for (nbfd = abfd->nested_archives; nbfd; nbfd = next) | |
725 | { | |
726 | next = nbfd->archive_next; | |
727 | bfd_close (nbfd); | |
728 | } | |
729 | ||
252b5132 | 730 | if (! BFD_SEND (abfd, _close_and_cleanup, (abfd))) |
b34976b6 | 731 | return FALSE; |
252b5132 | 732 | |
65077aa8 | 733 | ret = abfd->iovec->bclose (abfd); |
252b5132 | 734 | |
8c7d38e8 NC |
735 | if (ret) |
736 | _maybe_make_executable (abfd); | |
252b5132 | 737 | |
73e87d70 | 738 | _bfd_delete_bfd (abfd); |
252b5132 RH |
739 | |
740 | return ret; | |
741 | } | |
742 | ||
743 | /* | |
744 | FUNCTION | |
745 | bfd_close_all_done | |
746 | ||
747 | SYNOPSIS | |
b34976b6 | 748 | bfd_boolean bfd_close_all_done (bfd *); |
252b5132 RH |
749 | |
750 | DESCRIPTION | |
7c4a37eb AM |
751 | Close a BFD. Differs from <<bfd_close>> since it does not |
752 | complete any pending operations. This routine would be used | |
753 | if the application had just used BFD for swapping and didn't | |
754 | want to use any of the writing code. | |
252b5132 RH |
755 | |
756 | If the created file is executable, then <<chmod>> is called | |
757 | to mark it as such. | |
758 | ||
759 | All memory attached to the BFD is released. | |
760 | ||
761 | RETURNS | |
b34976b6 | 762 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
763 | */ |
764 | ||
b34976b6 | 765 | bfd_boolean |
c58b9523 | 766 | bfd_close_all_done (bfd *abfd) |
252b5132 | 767 | { |
b34976b6 | 768 | bfd_boolean ret; |
252b5132 RH |
769 | |
770 | ret = bfd_cache_close (abfd); | |
771 | ||
8c7d38e8 NC |
772 | if (ret) |
773 | _maybe_make_executable (abfd); | |
252b5132 | 774 | |
73e87d70 | 775 | _bfd_delete_bfd (abfd); |
252b5132 RH |
776 | |
777 | return ret; | |
778 | } | |
779 | ||
780 | /* | |
781 | FUNCTION | |
782 | bfd_create | |
783 | ||
784 | SYNOPSIS | |
c58b9523 | 785 | bfd *bfd_create (const char *filename, bfd *templ); |
252b5132 RH |
786 | |
787 | DESCRIPTION | |
7c4a37eb AM |
788 | Create a new BFD in the manner of <<bfd_openw>>, but without |
789 | opening a file. The new BFD takes the target from the target | |
fc1cfaa5 | 790 | used by @var{templ}. The format is always set to <<bfd_object>>. |
252b5132 RH |
791 | */ |
792 | ||
793 | bfd * | |
c58b9523 | 794 | bfd_create (const char *filename, bfd *templ) |
252b5132 RH |
795 | { |
796 | bfd *nbfd; | |
797 | ||
798 | nbfd = _bfd_new_bfd (); | |
799 | if (nbfd == NULL) | |
800 | return NULL; | |
801 | nbfd->filename = filename; | |
802 | if (templ) | |
803 | nbfd->xvec = templ->xvec; | |
804 | nbfd->direction = no_direction; | |
805 | bfd_set_format (nbfd, bfd_object); | |
c4f3d130 | 806 | |
252b5132 RH |
807 | return nbfd; |
808 | } | |
809 | ||
810 | /* | |
811 | FUNCTION | |
812 | bfd_make_writable | |
813 | ||
814 | SYNOPSIS | |
b34976b6 | 815 | bfd_boolean bfd_make_writable (bfd *abfd); |
252b5132 RH |
816 | |
817 | DESCRIPTION | |
818 | Takes a BFD as created by <<bfd_create>> and converts it | |
819 | into one like as returned by <<bfd_openw>>. It does this | |
820 | by converting the BFD to BFD_IN_MEMORY. It's assumed that | |
821 | you will call <<bfd_make_readable>> on this bfd later. | |
822 | ||
823 | RETURNS | |
b34976b6 | 824 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
825 | */ |
826 | ||
b34976b6 | 827 | bfd_boolean |
c58b9523 | 828 | bfd_make_writable (bfd *abfd) |
252b5132 RH |
829 | { |
830 | struct bfd_in_memory *bim; | |
831 | ||
832 | if (abfd->direction != no_direction) | |
833 | { | |
834 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 835 | return FALSE; |
252b5132 RH |
836 | } |
837 | ||
a50b1753 | 838 | bim = (struct bfd_in_memory *) bfd_malloc (sizeof (struct bfd_in_memory)); |
f6eea5ae MS |
839 | if (bim == NULL) |
840 | return FALSE; /* bfd_error already set. */ | |
c58b9523 | 841 | abfd->iostream = bim; |
c4f3d130 | 842 | /* bfd_bwrite will grow these as needed. */ |
252b5132 RH |
843 | bim->size = 0; |
844 | bim->buffer = 0; | |
845 | ||
846 | abfd->flags |= BFD_IN_MEMORY; | |
65077aa8 TG |
847 | abfd->iovec = &_bfd_memory_iovec; |
848 | abfd->origin = 0; | |
252b5132 RH |
849 | abfd->direction = write_direction; |
850 | abfd->where = 0; | |
851 | ||
b34976b6 | 852 | return TRUE; |
252b5132 RH |
853 | } |
854 | ||
855 | /* | |
856 | FUNCTION | |
857 | bfd_make_readable | |
858 | ||
859 | SYNOPSIS | |
b34976b6 | 860 | bfd_boolean bfd_make_readable (bfd *abfd); |
252b5132 RH |
861 | |
862 | DESCRIPTION | |
863 | Takes a BFD as created by <<bfd_create>> and | |
864 | <<bfd_make_writable>> and converts it into one like as | |
865 | returned by <<bfd_openr>>. It does this by writing the | |
866 | contents out to the memory buffer, then reversing the | |
867 | direction. | |
868 | ||
869 | RETURNS | |
b34976b6 | 870 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. */ |
252b5132 | 871 | |
b34976b6 | 872 | bfd_boolean |
c58b9523 | 873 | bfd_make_readable (bfd *abfd) |
252b5132 RH |
874 | { |
875 | if (abfd->direction != write_direction || !(abfd->flags & BFD_IN_MEMORY)) | |
876 | { | |
877 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 878 | return FALSE; |
252b5132 RH |
879 | } |
880 | ||
881 | if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd))) | |
b34976b6 | 882 | return FALSE; |
252b5132 RH |
883 | |
884 | if (! BFD_SEND (abfd, _close_and_cleanup, (abfd))) | |
b34976b6 | 885 | return FALSE; |
252b5132 | 886 | |
252b5132 RH |
887 | abfd->arch_info = &bfd_default_arch_struct; |
888 | ||
889 | abfd->where = 0; | |
252b5132 | 890 | abfd->format = bfd_unknown; |
c58b9523 | 891 | abfd->my_archive = NULL; |
dc810e39 | 892 | abfd->origin = 0; |
b34976b6 AM |
893 | abfd->opened_once = FALSE; |
894 | abfd->output_has_begun = FALSE; | |
252b5132 | 895 | abfd->section_count = 0; |
c58b9523 | 896 | abfd->usrdata = NULL; |
b34976b6 | 897 | abfd->cacheable = FALSE; |
9e2278f5 | 898 | abfd->flags |= BFD_IN_MEMORY; |
b34976b6 | 899 | abfd->mtime_set = FALSE; |
252b5132 | 900 | |
b34976b6 | 901 | abfd->target_defaulted = TRUE; |
252b5132 RH |
902 | abfd->direction = read_direction; |
903 | abfd->sections = 0; | |
904 | abfd->symcount = 0; | |
905 | abfd->outsymbols = 0; | |
906 | abfd->tdata.any = 0; | |
907 | ||
e54fdaa5 AM |
908 | bfd_section_list_clear (abfd); |
909 | bfd_check_format (abfd, bfd_object); | |
252b5132 | 910 | |
b34976b6 | 911 | return TRUE; |
252b5132 RH |
912 | } |
913 | ||
914 | /* | |
59a9808d | 915 | FUNCTION |
252b5132 RH |
916 | bfd_alloc |
917 | ||
918 | SYNOPSIS | |
0fdea5ce | 919 | void *bfd_alloc (bfd *abfd, bfd_size_type wanted); |
252b5132 RH |
920 | |
921 | DESCRIPTION | |
922 | Allocate a block of @var{wanted} bytes of memory attached to | |
923 | <<abfd>> and return a pointer to it. | |
924 | */ | |
925 | ||
c58b9523 AM |
926 | void * |
927 | bfd_alloc (bfd *abfd, bfd_size_type size) | |
252b5132 | 928 | { |
c58b9523 | 929 | void *ret; |
252b5132 | 930 | |
dc810e39 AM |
931 | if (size != (unsigned long) size) |
932 | { | |
933 | bfd_set_error (bfd_error_no_memory); | |
934 | return NULL; | |
935 | } | |
936 | ||
a50b1753 | 937 | ret = objalloc_alloc ((struct objalloc *) abfd->memory, (unsigned long) size); |
252b5132 RH |
938 | if (ret == NULL) |
939 | bfd_set_error (bfd_error_no_memory); | |
940 | return ret; | |
941 | } | |
942 | ||
d0fb9a8d JJ |
943 | /* |
944 | INTERNAL_FUNCTION | |
945 | bfd_alloc2 | |
946 | ||
947 | SYNOPSIS | |
948 | void *bfd_alloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size); | |
949 | ||
950 | DESCRIPTION | |
951 | Allocate a block of @var{nmemb} elements of @var{size} bytes each | |
952 | of memory attached to <<abfd>> and return a pointer to it. | |
953 | */ | |
954 | ||
955 | void * | |
956 | bfd_alloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size) | |
957 | { | |
958 | void *ret; | |
959 | ||
960 | if ((nmemb | size) >= HALF_BFD_SIZE_TYPE | |
961 | && size != 0 | |
962 | && nmemb > ~(bfd_size_type) 0 / size) | |
963 | { | |
964 | bfd_set_error (bfd_error_no_memory); | |
965 | return NULL; | |
966 | } | |
967 | ||
968 | size *= nmemb; | |
969 | ||
970 | if (size != (unsigned long) size) | |
971 | { | |
972 | bfd_set_error (bfd_error_no_memory); | |
973 | return NULL; | |
974 | } | |
975 | ||
a50b1753 | 976 | ret = objalloc_alloc ((struct objalloc *) abfd->memory, (unsigned long) size); |
d0fb9a8d JJ |
977 | if (ret == NULL) |
978 | bfd_set_error (bfd_error_no_memory); | |
979 | return ret; | |
980 | } | |
981 | ||
c3e8c140 | 982 | /* |
59a9808d | 983 | FUNCTION |
c3e8c140 BE |
984 | bfd_zalloc |
985 | ||
986 | SYNOPSIS | |
987 | void *bfd_zalloc (bfd *abfd, bfd_size_type wanted); | |
988 | ||
989 | DESCRIPTION | |
990 | Allocate a block of @var{wanted} bytes of zeroed memory | |
991 | attached to <<abfd>> and return a pointer to it. | |
992 | */ | |
993 | ||
c58b9523 AM |
994 | void * |
995 | bfd_zalloc (bfd *abfd, bfd_size_type size) | |
252b5132 | 996 | { |
c58b9523 | 997 | void *res; |
252b5132 RH |
998 | |
999 | res = bfd_alloc (abfd, size); | |
1000 | if (res) | |
dc810e39 | 1001 | memset (res, 0, (size_t) size); |
252b5132 RH |
1002 | return res; |
1003 | } | |
1004 | ||
d0fb9a8d JJ |
1005 | /* |
1006 | INTERNAL_FUNCTION | |
1007 | bfd_zalloc2 | |
1008 | ||
1009 | SYNOPSIS | |
1010 | void *bfd_zalloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size); | |
1011 | ||
1012 | DESCRIPTION | |
1013 | Allocate a block of @var{nmemb} elements of @var{size} bytes each | |
1014 | of zeroed memory attached to <<abfd>> and return a pointer to it. | |
1015 | */ | |
1016 | ||
1017 | void * | |
1018 | bfd_zalloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size) | |
1019 | { | |
1020 | void *res; | |
1021 | ||
1022 | if ((nmemb | size) >= HALF_BFD_SIZE_TYPE | |
1023 | && size != 0 | |
1024 | && nmemb > ~(bfd_size_type) 0 / size) | |
1025 | { | |
1026 | bfd_set_error (bfd_error_no_memory); | |
1027 | return NULL; | |
1028 | } | |
1029 | ||
1030 | size *= nmemb; | |
1031 | ||
1032 | res = bfd_alloc (abfd, size); | |
1033 | if (res) | |
1034 | memset (res, 0, (size_t) size); | |
1035 | return res; | |
1036 | } | |
1037 | ||
73e87d70 AM |
1038 | /* Free a block allocated for a BFD. |
1039 | Note: Also frees all more recently allocated blocks! */ | |
252b5132 RH |
1040 | |
1041 | void | |
c58b9523 | 1042 | bfd_release (bfd *abfd, void *block) |
252b5132 RH |
1043 | { |
1044 | objalloc_free_block ((struct objalloc *) abfd->memory, block); | |
1045 | } | |
31f7ba04 NC |
1046 | |
1047 | ||
f12123c0 AM |
1048 | /* |
1049 | GNU Extension: separate debug-info files | |
1050 | ||
31f7ba04 NC |
1051 | The idea here is that a special section called .gnu_debuglink might be |
1052 | embedded in a binary file, which indicates that some *other* file | |
1053 | contains the real debugging information. This special section contains a | |
1054 | filename and CRC32 checksum, which we read and resolve to another file, | |
1055 | if it exists. | |
1056 | ||
1057 | This facilitates "optional" provision of debugging information, without | |
1058 | having to provide two complete copies of every binary object (with and | |
1059 | without debug symbols). | |
1060 | */ | |
1061 | ||
2593f09a | 1062 | #define GNU_DEBUGLINK ".gnu_debuglink" |
31f7ba04 | 1063 | /* |
2593f09a NC |
1064 | FUNCTION |
1065 | bfd_calc_gnu_debuglink_crc32 | |
31f7ba04 NC |
1066 | |
1067 | SYNOPSIS | |
c58b9523 AM |
1068 | unsigned long bfd_calc_gnu_debuglink_crc32 |
1069 | (unsigned long crc, const unsigned char *buf, bfd_size_type len); | |
31f7ba04 NC |
1070 | |
1071 | DESCRIPTION | |
2593f09a NC |
1072 | Computes a CRC value as used in the .gnu_debuglink section. |
1073 | Advances the previously computed @var{crc} value by computing | |
1074 | and adding in the crc32 for @var{len} bytes of @var{buf}. | |
1075 | ||
1076 | RETURNS | |
1077 | Return the updated CRC32 value. | |
f12123c0 | 1078 | */ |
31f7ba04 | 1079 | |
2593f09a | 1080 | unsigned long |
c58b9523 AM |
1081 | bfd_calc_gnu_debuglink_crc32 (unsigned long crc, |
1082 | const unsigned char *buf, | |
1083 | bfd_size_type len) | |
31f7ba04 NC |
1084 | { |
1085 | static const unsigned long crc32_table[256] = | |
1086 | { | |
1087 | 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, | |
1088 | 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, | |
1089 | 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, | |
1090 | 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, | |
1091 | 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, | |
1092 | 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, | |
1093 | 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, | |
1094 | 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, | |
1095 | 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, | |
1096 | 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, | |
1097 | 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, | |
1098 | 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, | |
1099 | 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, | |
1100 | 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, | |
1101 | 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, | |
1102 | 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, | |
1103 | 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, | |
1104 | 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, | |
1105 | 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, | |
1106 | 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, | |
1107 | 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, | |
1108 | 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, | |
1109 | 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, | |
1110 | 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, | |
1111 | 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, | |
1112 | 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, | |
1113 | 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, | |
1114 | 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, | |
1115 | 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, | |
1116 | 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, | |
1117 | 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, | |
1118 | 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, | |
1119 | 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, | |
1120 | 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, | |
1121 | 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, | |
1122 | 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, | |
1123 | 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, | |
1124 | 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, | |
1125 | 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, | |
1126 | 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, | |
1127 | 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, | |
1128 | 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, | |
1129 | 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, | |
1130 | 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, | |
1131 | 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, | |
1132 | 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, | |
1133 | 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, | |
1134 | 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, | |
1135 | 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, | |
1136 | 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, | |
1137 | 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, | |
1138 | 0x2d02ef8d | |
1139 | }; | |
1140 | const unsigned char *end; | |
1141 | ||
1142 | crc = ~crc & 0xffffffff; | |
1143 | for (end = buf + len; buf < end; ++ buf) | |
1144 | crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8); | |
1145 | return ~crc & 0xffffffff;; | |
1146 | } | |
1147 | ||
1148 | ||
1149 | /* | |
1150 | INTERNAL_FUNCTION | |
1151 | get_debug_link_info | |
1152 | ||
1153 | SYNOPSIS | |
c58b9523 | 1154 | char *get_debug_link_info (bfd *abfd, unsigned long *crc32_out); |
31f7ba04 NC |
1155 | |
1156 | DESCRIPTION | |
1157 | fetch the filename and CRC32 value for any separate debuginfo | |
1158 | associated with @var{abfd}. Return NULL if no such info found, | |
1159 | otherwise return filename and update @var{crc32_out}. | |
1160 | */ | |
1161 | ||
1162 | static char * | |
c58b9523 | 1163 | get_debug_link_info (bfd *abfd, unsigned long *crc32_out) |
31f7ba04 | 1164 | { |
eea6121a | 1165 | asection *sect; |
31f7ba04 | 1166 | unsigned long crc32; |
eea6121a | 1167 | bfd_byte *contents; |
31f7ba04 | 1168 | int crc_offset; |
f075ee0c | 1169 | char *name; |
31f7ba04 NC |
1170 | |
1171 | BFD_ASSERT (abfd); | |
1172 | BFD_ASSERT (crc32_out); | |
1173 | ||
2593f09a | 1174 | sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK); |
31f7ba04 NC |
1175 | |
1176 | if (sect == NULL) | |
1177 | return NULL; | |
1178 | ||
eea6121a | 1179 | if (!bfd_malloc_and_get_section (abfd, sect, &contents)) |
31f7ba04 | 1180 | { |
eea6121a AM |
1181 | if (contents != NULL) |
1182 | free (contents); | |
31f7ba04 NC |
1183 | return NULL; |
1184 | } | |
1185 | ||
1186 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
f075ee0c AM |
1187 | name = (char *) contents; |
1188 | crc_offset = strlen (name) + 1; | |
31f7ba04 NC |
1189 | crc_offset = (crc_offset + 3) & ~3; |
1190 | ||
c58b9523 | 1191 | crc32 = bfd_get_32 (abfd, contents + crc_offset); |
31f7ba04 NC |
1192 | |
1193 | *crc32_out = crc32; | |
f075ee0c | 1194 | return name; |
31f7ba04 NC |
1195 | } |
1196 | ||
1197 | /* | |
1198 | INTERNAL_FUNCTION | |
1199 | separate_debug_file_exists | |
1200 | ||
1201 | SYNOPSIS | |
c58b9523 AM |
1202 | bfd_boolean separate_debug_file_exists |
1203 | (char *name, unsigned long crc32); | |
31f7ba04 NC |
1204 | |
1205 | DESCRIPTION | |
1206 | Checks to see if @var{name} is a file and if its contents | |
1207 | match @var{crc32}. | |
1208 | */ | |
1209 | ||
1210 | static bfd_boolean | |
c58b9523 | 1211 | separate_debug_file_exists (const char *name, const unsigned long crc) |
31f7ba04 | 1212 | { |
f075ee0c | 1213 | static unsigned char buffer [8 * 1024]; |
31f7ba04 | 1214 | unsigned long file_crc = 0; |
fed590bb | 1215 | FILE *f; |
2593f09a | 1216 | bfd_size_type count; |
31f7ba04 NC |
1217 | |
1218 | BFD_ASSERT (name); | |
1219 | ||
fed590bb AM |
1220 | f = real_fopen (name, FOPEN_RB); |
1221 | if (f == NULL) | |
31f7ba04 NC |
1222 | return FALSE; |
1223 | ||
fed590bb | 1224 | while ((count = fread (buffer, 1, sizeof (buffer), f)) > 0) |
2593f09a | 1225 | file_crc = bfd_calc_gnu_debuglink_crc32 (file_crc, buffer, count); |
31f7ba04 | 1226 | |
fed590bb | 1227 | fclose (f); |
31f7ba04 NC |
1228 | |
1229 | return crc == file_crc; | |
1230 | } | |
1231 | ||
1232 | ||
1233 | /* | |
1234 | INTERNAL_FUNCTION | |
1235 | find_separate_debug_file | |
1236 | ||
1237 | SYNOPSIS | |
c58b9523 | 1238 | char *find_separate_debug_file (bfd *abfd); |
31f7ba04 NC |
1239 | |
1240 | DESCRIPTION | |
1241 | Searches @var{abfd} for a reference to separate debugging | |
1242 | information, scans various locations in the filesystem, including | |
1243 | the file tree rooted at @var{debug_file_directory}, and returns a | |
1244 | filename of such debugging information if the file is found and has | |
1245 | matching CRC32. Returns NULL if no reference to debugging file | |
1246 | exists, or file cannot be found. | |
1247 | */ | |
1248 | ||
1249 | static char * | |
c58b9523 | 1250 | find_separate_debug_file (bfd *abfd, const char *debug_file_directory) |
31f7ba04 | 1251 | { |
91d6fa6a | 1252 | char *base; |
31f7ba04 NC |
1253 | char *dir; |
1254 | char *debugfile; | |
91910cdd | 1255 | char *canon_dir; |
31f7ba04 | 1256 | unsigned long crc32; |
3ea6b9a5 | 1257 | size_t dirlen; |
91910cdd | 1258 | size_t canon_dirlen; |
31f7ba04 NC |
1259 | |
1260 | BFD_ASSERT (abfd); | |
1261 | if (debug_file_directory == NULL) | |
1262 | debug_file_directory = "."; | |
1263 | ||
1264 | /* BFD may have been opened from a stream. */ | |
3ea6b9a5 AM |
1265 | if (abfd->filename == NULL) |
1266 | { | |
1267 | bfd_set_error (bfd_error_invalid_operation); | |
1268 | return NULL; | |
1269 | } | |
31f7ba04 | 1270 | |
91d6fa6a NC |
1271 | base = get_debug_link_info (abfd, & crc32); |
1272 | if (base == NULL) | |
31f7ba04 | 1273 | return NULL; |
2593f09a | 1274 | |
91d6fa6a | 1275 | if (base[0] == '\0') |
5ed6aba4 | 1276 | { |
91d6fa6a | 1277 | free (base); |
3ea6b9a5 | 1278 | bfd_set_error (bfd_error_no_debug_section); |
5ed6aba4 NC |
1279 | return NULL; |
1280 | } | |
31f7ba04 | 1281 | |
3ea6b9a5 AM |
1282 | for (dirlen = strlen (abfd->filename); dirlen > 0; dirlen--) |
1283 | if (IS_DIR_SEPARATOR (abfd->filename[dirlen - 1])) | |
1284 | break; | |
1285 | ||
a50b1753 | 1286 | dir = (char *) bfd_malloc (dirlen + 1); |
2593f09a NC |
1287 | if (dir == NULL) |
1288 | { | |
91d6fa6a | 1289 | free (base); |
2593f09a NC |
1290 | return NULL; |
1291 | } | |
3ea6b9a5 AM |
1292 | memcpy (dir, abfd->filename, dirlen); |
1293 | dir[dirlen] = '\0'; | |
1294 | ||
91910cdd AS |
1295 | /* Compute the canonical name of the bfd object with all symbolic links |
1296 | resolved, for use in the global debugfile directory. */ | |
1297 | canon_dir = lrealpath (abfd->filename); | |
1298 | for (canon_dirlen = strlen (canon_dir); canon_dirlen > 0; canon_dirlen--) | |
1299 | if (IS_DIR_SEPARATOR (canon_dir[canon_dirlen - 1])) | |
1300 | break; | |
1301 | canon_dir[canon_dirlen] = '\0'; | |
1302 | ||
a50b1753 NC |
1303 | debugfile = (char *) |
1304 | bfd_malloc (strlen (debug_file_directory) + 1 | |
1305 | + (canon_dirlen > dirlen ? canon_dirlen : dirlen) | |
1306 | + strlen (".debug/") | |
91d6fa6a | 1307 | + strlen (base) |
a50b1753 | 1308 | + 1); |
2593f09a NC |
1309 | if (debugfile == NULL) |
1310 | { | |
91d6fa6a | 1311 | free (base); |
2593f09a | 1312 | free (dir); |
91910cdd | 1313 | free (canon_dir); |
2593f09a NC |
1314 | return NULL; |
1315 | } | |
31f7ba04 NC |
1316 | |
1317 | /* First try in the same directory as the original file: */ | |
1318 | strcpy (debugfile, dir); | |
91d6fa6a | 1319 | strcat (debugfile, base); |
31f7ba04 NC |
1320 | |
1321 | if (separate_debug_file_exists (debugfile, crc32)) | |
1322 | { | |
91d6fa6a | 1323 | free (base); |
31f7ba04 | 1324 | free (dir); |
91910cdd | 1325 | free (canon_dir); |
31f7ba04 NC |
1326 | return debugfile; |
1327 | } | |
1328 | ||
1329 | /* Then try in a subdirectory called .debug. */ | |
1330 | strcpy (debugfile, dir); | |
1331 | strcat (debugfile, ".debug/"); | |
91d6fa6a | 1332 | strcat (debugfile, base); |
31f7ba04 NC |
1333 | |
1334 | if (separate_debug_file_exists (debugfile, crc32)) | |
1335 | { | |
91d6fa6a | 1336 | free (base); |
31f7ba04 | 1337 | free (dir); |
91910cdd | 1338 | free (canon_dir); |
31f7ba04 NC |
1339 | return debugfile; |
1340 | } | |
1341 | ||
1342 | /* Then try in the global debugfile directory. */ | |
1343 | strcpy (debugfile, debug_file_directory); | |
91910cdd AS |
1344 | dirlen = strlen (debug_file_directory) - 1; |
1345 | if (dirlen > 0 | |
1346 | && debug_file_directory[dirlen] != '/' | |
1347 | && canon_dir[0] != '/') | |
31f7ba04 | 1348 | strcat (debugfile, "/"); |
91910cdd | 1349 | strcat (debugfile, canon_dir); |
91d6fa6a | 1350 | strcat (debugfile, base); |
31f7ba04 NC |
1351 | |
1352 | if (separate_debug_file_exists (debugfile, crc32)) | |
1353 | { | |
91d6fa6a | 1354 | free (base); |
31f7ba04 | 1355 | free (dir); |
91910cdd | 1356 | free (canon_dir); |
31f7ba04 NC |
1357 | return debugfile; |
1358 | } | |
1359 | ||
1360 | free (debugfile); | |
91d6fa6a | 1361 | free (base); |
31f7ba04 | 1362 | free (dir); |
91910cdd | 1363 | free (canon_dir); |
31f7ba04 NC |
1364 | return NULL; |
1365 | } | |
1366 | ||
1367 | ||
1368 | /* | |
1369 | FUNCTION | |
1370 | bfd_follow_gnu_debuglink | |
1371 | ||
1372 | SYNOPSIS | |
c58b9523 | 1373 | char *bfd_follow_gnu_debuglink (bfd *abfd, const char *dir); |
31f7ba04 NC |
1374 | |
1375 | DESCRIPTION | |
1376 | ||
1377 | Takes a BFD and searches it for a .gnu_debuglink section. If this | |
28d39d1a NC |
1378 | section is found, it examines the section for the name and checksum |
1379 | of a '.debug' file containing auxiliary debugging information. It | |
1380 | then searches the filesystem for this .debug file in some standard | |
31f7ba04 | 1381 | locations, including the directory tree rooted at @var{dir}, and if |
28d39d1a NC |
1382 | found returns the full filename. |
1383 | ||
1384 | If @var{dir} is NULL, it will search a default path configured into | |
1385 | libbfd at build time. [XXX this feature is not currently | |
1386 | implemented]. | |
31f7ba04 NC |
1387 | |
1388 | RETURNS | |
1389 | <<NULL>> on any errors or failure to locate the .debug file, | |
1390 | otherwise a pointer to a heap-allocated string containing the | |
28d39d1a | 1391 | filename. The caller is responsible for freeing this string. |
31f7ba04 NC |
1392 | */ |
1393 | ||
1394 | char * | |
c58b9523 | 1395 | bfd_follow_gnu_debuglink (bfd *abfd, const char *dir) |
31f7ba04 | 1396 | { |
31f7ba04 NC |
1397 | return find_separate_debug_file (abfd, dir); |
1398 | } | |
2593f09a NC |
1399 | |
1400 | /* | |
1401 | FUNCTION | |
e7c81c25 | 1402 | bfd_create_gnu_debuglink_section |
2593f09a NC |
1403 | |
1404 | SYNOPSIS | |
198beae2 | 1405 | struct bfd_section *bfd_create_gnu_debuglink_section |
c58b9523 | 1406 | (bfd *abfd, const char *filename); |
2593f09a NC |
1407 | |
1408 | DESCRIPTION | |
1409 | ||
e7c81c25 NC |
1410 | Takes a @var{BFD} and adds a .gnu_debuglink section to it. The section is sized |
1411 | to be big enough to contain a link to the specified @var{filename}. | |
1412 | ||
1413 | RETURNS | |
1414 | A pointer to the new section is returned if all is ok. Otherwise <<NULL>> is | |
f12123c0 | 1415 | returned and bfd_error is set. |
e7c81c25 NC |
1416 | */ |
1417 | ||
1418 | asection * | |
c58b9523 | 1419 | bfd_create_gnu_debuglink_section (bfd *abfd, const char *filename) |
e7c81c25 | 1420 | { |
c58b9523 AM |
1421 | asection *sect; |
1422 | bfd_size_type debuglink_size; | |
117ed4f8 | 1423 | flagword flags; |
e7c81c25 NC |
1424 | |
1425 | if (abfd == NULL || filename == NULL) | |
1426 | { | |
1427 | bfd_set_error (bfd_error_invalid_operation); | |
1428 | return NULL; | |
1429 | } | |
1430 | ||
1431 | /* Strip off any path components in filename. */ | |
1432 | filename = lbasename (filename); | |
f12123c0 | 1433 | |
e7c81c25 NC |
1434 | sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK); |
1435 | if (sect) | |
1436 | { | |
1437 | /* Section already exists. */ | |
1438 | bfd_set_error (bfd_error_invalid_operation); | |
1439 | return NULL; | |
1440 | } | |
1441 | ||
117ed4f8 AM |
1442 | flags = SEC_HAS_CONTENTS | SEC_READONLY | SEC_DEBUGGING; |
1443 | sect = bfd_make_section_with_flags (abfd, GNU_DEBUGLINK, flags); | |
e7c81c25 NC |
1444 | if (sect == NULL) |
1445 | return NULL; | |
1446 | ||
e7c81c25 NC |
1447 | debuglink_size = strlen (filename) + 1; |
1448 | debuglink_size += 3; | |
1449 | debuglink_size &= ~3; | |
1450 | debuglink_size += 4; | |
1451 | ||
1452 | if (! bfd_set_section_size (abfd, sect, debuglink_size)) | |
1453 | /* XXX Should we delete the section from the bfd ? */ | |
1454 | return NULL; | |
f12123c0 | 1455 | |
e7c81c25 NC |
1456 | return sect; |
1457 | } | |
1458 | ||
1459 | ||
1460 | /* | |
1461 | FUNCTION | |
1462 | bfd_fill_in_gnu_debuglink_section | |
1463 | ||
1464 | SYNOPSIS | |
c58b9523 | 1465 | bfd_boolean bfd_fill_in_gnu_debuglink_section |
198beae2 | 1466 | (bfd *abfd, struct bfd_section *sect, const char *filename); |
e7c81c25 NC |
1467 | |
1468 | DESCRIPTION | |
1469 | ||
1470 | Takes a @var{BFD} and containing a .gnu_debuglink section @var{SECT} | |
1471 | and fills in the contents of the section to contain a link to the | |
1472 | specified @var{filename}. The filename should be relative to the | |
1473 | current directory. | |
2593f09a NC |
1474 | |
1475 | RETURNS | |
1476 | <<TRUE>> is returned if all is ok. Otherwise <<FALSE>> is returned | |
f12123c0 | 1477 | and bfd_error is set. |
2593f09a NC |
1478 | */ |
1479 | ||
1480 | bfd_boolean | |
c58b9523 | 1481 | bfd_fill_in_gnu_debuglink_section (bfd *abfd, |
198beae2 | 1482 | struct bfd_section *sect, |
c58b9523 | 1483 | const char *filename) |
2593f09a | 1484 | { |
2593f09a NC |
1485 | bfd_size_type debuglink_size; |
1486 | unsigned long crc32; | |
1487 | char * contents; | |
1488 | bfd_size_type crc_offset; | |
1489 | FILE * handle; | |
f075ee0c | 1490 | static unsigned char buffer[8 * 1024]; |
2593f09a | 1491 | size_t count; |
3ea6b9a5 | 1492 | size_t filelen; |
2593f09a | 1493 | |
e7c81c25 | 1494 | if (abfd == NULL || sect == NULL || filename == NULL) |
2593f09a NC |
1495 | { |
1496 | bfd_set_error (bfd_error_invalid_operation); | |
1497 | return FALSE; | |
1498 | } | |
1499 | ||
1500 | /* Make sure that we can read the file. | |
1501 | XXX - Should we attempt to locate the debug info file using the same | |
1502 | algorithm as gdb ? At the moment, since we are creating the | |
1503 | .gnu_debuglink section, we insist upon the user providing us with a | |
1504 | correct-for-section-creation-time path, but this need not conform to | |
1505 | the gdb location algorithm. */ | |
2e6f4fae | 1506 | handle = real_fopen (filename, FOPEN_RB); |
2593f09a NC |
1507 | if (handle == NULL) |
1508 | { | |
1509 | bfd_set_error (bfd_error_system_call); | |
1510 | return FALSE; | |
1511 | } | |
1512 | ||
1513 | crc32 = 0; | |
1514 | while ((count = fread (buffer, 1, sizeof buffer, handle)) > 0) | |
1515 | crc32 = bfd_calc_gnu_debuglink_crc32 (crc32, buffer, count); | |
1516 | fclose (handle); | |
1517 | ||
1518 | /* Strip off any path components in filename, | |
1519 | now that we no longer need them. */ | |
1520 | filename = lbasename (filename); | |
f12123c0 | 1521 | |
3ea6b9a5 AM |
1522 | filelen = strlen (filename); |
1523 | debuglink_size = filelen + 1; | |
2593f09a NC |
1524 | debuglink_size += 3; |
1525 | debuglink_size &= ~3; | |
1526 | debuglink_size += 4; | |
1527 | ||
a50b1753 | 1528 | contents = (char *) bfd_malloc (debuglink_size); |
2593f09a NC |
1529 | if (contents == NULL) |
1530 | { | |
1531 | /* XXX Should we delete the section from the bfd ? */ | |
2593f09a NC |
1532 | return FALSE; |
1533 | } | |
1534 | ||
2593f09a | 1535 | crc_offset = debuglink_size - 4; |
3ea6b9a5 AM |
1536 | memcpy (contents, filename, filelen); |
1537 | memset (contents + filelen, 0, crc_offset - filelen); | |
2593f09a | 1538 | |
c58b9523 | 1539 | bfd_put_32 (abfd, crc32, contents + crc_offset); |
2593f09a | 1540 | |
c58b9523 | 1541 | if (! bfd_set_section_contents (abfd, sect, contents, 0, debuglink_size)) |
2593f09a NC |
1542 | { |
1543 | /* XXX Should we delete the section from the bfd ? */ | |
1544 | free (contents); | |
1545 | return FALSE; | |
1546 | } | |
1547 | ||
1548 | return TRUE; | |
1549 | } |