Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* opncls.c -- open and close a BFD. |
a253d456 | 2 | Copyright 1990-2013 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | Written by Cygnus Support. | |
5 | ||
c4f3d130 | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
c4f3d130 NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c4f3d130 | 11 | (at your option) any later version. |
252b5132 | 12 | |
c4f3d130 NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
c4f3d130 NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
252b5132 | 22 | |
252b5132 | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
252b5132 RH |
25 | #include "objalloc.h" |
26 | #include "libbfd.h" | |
31f7ba04 | 27 | #include "libiberty.h" |
252b5132 RH |
28 | |
29 | #ifndef S_IXUSR | |
30 | #define S_IXUSR 0100 /* Execute by owner. */ | |
31 | #endif | |
32 | #ifndef S_IXGRP | |
33 | #define S_IXGRP 0010 /* Execute by group. */ | |
34 | #endif | |
35 | #ifndef S_IXOTH | |
36 | #define S_IXOTH 0001 /* Execute by others. */ | |
37 | #endif | |
38 | ||
fc1cfaa5 | 39 | /* Counters used to initialize the bfd identifier. */ |
52b69c9e | 40 | |
fc1cfaa5 AM |
41 | static unsigned int bfd_id_counter = 0; |
42 | static unsigned int bfd_reserved_id_counter = 0; | |
43 | ||
44 | /* | |
45 | CODE_FRAGMENT | |
46 | .{* Set to N to open the next N BFDs using an alternate id space. *} | |
47 | .extern unsigned int bfd_use_reserved_id; | |
48 | */ | |
49 | unsigned int bfd_use_reserved_id = 0; | |
52b69c9e | 50 | |
252b5132 RH |
51 | /* fdopen is a loser -- we should use stdio exclusively. Unfortunately |
52 | if we do that we can't use fcntl. */ | |
53 | ||
252b5132 RH |
54 | /* Return a new BFD. All BFD's are allocated through this routine. */ |
55 | ||
56 | bfd * | |
c58b9523 | 57 | _bfd_new_bfd (void) |
252b5132 RH |
58 | { |
59 | bfd *nbfd; | |
60 | ||
a50b1753 | 61 | nbfd = (bfd *) bfd_zmalloc (sizeof (bfd)); |
252b5132 RH |
62 | if (nbfd == NULL) |
63 | return NULL; | |
64 | ||
fc1cfaa5 AM |
65 | if (bfd_use_reserved_id) |
66 | { | |
67 | nbfd->id = --bfd_reserved_id_counter; | |
68 | --bfd_use_reserved_id; | |
69 | } | |
70 | else | |
71 | nbfd->id = bfd_id_counter++; | |
52b69c9e | 72 | |
c58b9523 | 73 | nbfd->memory = objalloc_create (); |
252b5132 RH |
74 | if (nbfd->memory == NULL) |
75 | { | |
76 | bfd_set_error (bfd_error_no_memory); | |
73e87d70 | 77 | free (nbfd); |
252b5132 RH |
78 | return NULL; |
79 | } | |
80 | ||
81 | nbfd->arch_info = &bfd_default_arch_struct; | |
82 | ||
28d39d1a | 83 | if (!bfd_hash_table_init_n (& nbfd->section_htab, bfd_section_hash_newfunc, |
c9ba0c87 | 84 | sizeof (struct section_hash_entry), 13)) |
73e87d70 AM |
85 | { |
86 | free (nbfd); | |
87 | return NULL; | |
88 | } | |
252b5132 RH |
89 | |
90 | return nbfd; | |
91 | } | |
92 | ||
b374d0f8 AM |
93 | static const struct bfd_iovec opncls_iovec; |
94 | ||
252b5132 RH |
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; |
b374d0f8 AM |
107 | if (obfd->iovec == &opncls_iovec) |
108 | nbfd->iostream = obfd->iostream; | |
252b5132 RH |
109 | nbfd->my_archive = obfd; |
110 | nbfd->direction = read_direction; | |
111 | nbfd->target_defaulted = obfd->target_defaulted; | |
112 | return nbfd; | |
113 | } | |
114 | ||
73e87d70 AM |
115 | /* Delete a BFD. */ |
116 | ||
7b84f8da | 117 | static void |
c58b9523 | 118 | _bfd_delete_bfd (bfd *abfd) |
73e87d70 | 119 | { |
b25e3d87 L |
120 | if (abfd->memory) |
121 | { | |
122 | bfd_hash_table_free (&abfd->section_htab); | |
123 | objalloc_free ((struct objalloc *) abfd->memory); | |
124 | } | |
a988325c | 125 | |
06e7acd7 | 126 | free (abfd->arelt_data); |
73e87d70 AM |
127 | free (abfd); |
128 | } | |
129 | ||
b25e3d87 L |
130 | /* Free objalloc memory. */ |
131 | ||
132 | bfd_boolean | |
133 | _bfd_free_cached_info (bfd *abfd) | |
134 | { | |
135 | if (abfd->memory) | |
136 | { | |
137 | bfd_hash_table_free (&abfd->section_htab); | |
138 | objalloc_free ((struct objalloc *) abfd->memory); | |
139 | ||
140 | abfd->sections = NULL; | |
141 | abfd->section_last = NULL; | |
142 | abfd->outsymbols = NULL; | |
143 | abfd->tdata.any = NULL; | |
144 | abfd->usrdata = NULL; | |
145 | abfd->memory = NULL; | |
146 | } | |
147 | ||
148 | return TRUE; | |
149 | } | |
150 | ||
252b5132 RH |
151 | /* |
152 | SECTION | |
153 | Opening and closing BFDs | |
154 | ||
1b74d094 BW |
155 | SUBSECTION |
156 | Functions for opening and closing | |
252b5132 RH |
157 | */ |
158 | ||
159 | /* | |
160 | FUNCTION | |
2d0123b7 | 161 | bfd_fopen |
252b5132 RH |
162 | |
163 | SYNOPSIS | |
2d0123b7 MM |
164 | bfd *bfd_fopen (const char *filename, const char *target, |
165 | const char *mode, int fd); | |
252b5132 RH |
166 | |
167 | DESCRIPTION | |
2d0123b7 MM |
168 | Open the file @var{filename} with the target @var{target}. |
169 | Return a pointer to the created BFD. If @var{fd} is not -1, | |
170 | then <<fdopen>> is used to open the file; otherwise, <<fopen>> | |
171 | is used. @var{mode} is passed directly to <<fopen>> or | |
68ffbac6 | 172 | <<fdopen>>. |
252b5132 RH |
173 | |
174 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
175 | that function. | |
176 | ||
a366f4ff MM |
177 | The new BFD is marked as cacheable iff @var{fd} is -1. |
178 | ||
252b5132 | 179 | If <<NULL>> is returned then an error has occured. Possible errors |
7c4a37eb AM |
180 | are <<bfd_error_no_memory>>, <<bfd_error_invalid_target>> or |
181 | <<system_call>> error. | |
6f0c7050 TT |
182 | |
183 | On error, @var{fd} is always closed. | |
252b5132 RH |
184 | */ |
185 | ||
186 | bfd * | |
2d0123b7 | 187 | bfd_fopen (const char *filename, const char *target, const char *mode, int fd) |
252b5132 RH |
188 | { |
189 | bfd *nbfd; | |
190 | const bfd_target *target_vec; | |
191 | ||
192 | nbfd = _bfd_new_bfd (); | |
193 | if (nbfd == NULL) | |
6f0c7050 TT |
194 | { |
195 | if (fd != -1) | |
196 | close (fd); | |
197 | return NULL; | |
198 | } | |
252b5132 RH |
199 | |
200 | target_vec = bfd_find_target (target, nbfd); | |
201 | if (target_vec == NULL) | |
202 | { | |
6f0c7050 TT |
203 | if (fd != -1) |
204 | close (fd); | |
73e87d70 | 205 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
206 | return NULL; |
207 | } | |
68ffbac6 | 208 | |
2d0123b7 MM |
209 | #ifdef HAVE_FDOPEN |
210 | if (fd != -1) | |
211 | nbfd->iostream = fdopen (fd, mode); | |
212 | else | |
213 | #endif | |
2e6f4fae | 214 | nbfd->iostream = real_fopen (filename, mode); |
2d0123b7 MM |
215 | if (nbfd->iostream == NULL) |
216 | { | |
92a7c1b8 | 217 | bfd_set_error (bfd_error_system_call); |
2d0123b7 MM |
218 | _bfd_delete_bfd (nbfd); |
219 | return NULL; | |
220 | } | |
252b5132 | 221 | |
2d0123b7 | 222 | /* OK, put everything where it belongs. */ |
252b5132 | 223 | nbfd->filename = filename; |
252b5132 | 224 | |
2d0123b7 MM |
225 | /* Figure out whether the user is opening the file for reading, |
226 | writing, or both, by looking at the MODE argument. */ | |
68ffbac6 | 227 | if ((mode[0] == 'r' || mode[0] == 'w' || mode[0] == 'a') |
2d0123b7 MM |
228 | && mode[1] == '+') |
229 | nbfd->direction = both_direction; | |
230 | else if (mode[0] == 'r') | |
231 | nbfd->direction = read_direction; | |
232 | else | |
233 | nbfd->direction = write_direction; | |
234 | ||
235 | if (! bfd_cache_init (nbfd)) | |
252b5132 | 236 | { |
73e87d70 | 237 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
238 | return NULL; |
239 | } | |
2d0123b7 | 240 | nbfd->opened_once = TRUE; |
a253d456 | 241 | |
a366f4ff MM |
242 | /* If we opened the file by name, mark it cacheable; we can close it |
243 | and reopen it later. However, if a file descriptor was provided, | |
244 | then it may have been opened with special flags that make it | |
245 | unsafe to close and reopen the file. */ | |
246 | if (fd == -1) | |
a253d456 | 247 | (void) bfd_set_cacheable (nbfd, TRUE); |
252b5132 RH |
248 | |
249 | return nbfd; | |
250 | } | |
251 | ||
2d0123b7 MM |
252 | /* |
253 | FUNCTION | |
254 | bfd_openr | |
255 | ||
256 | SYNOPSIS | |
257 | bfd *bfd_openr (const char *filename, const char *target); | |
258 | ||
259 | DESCRIPTION | |
260 | Open the file @var{filename} (using <<fopen>>) with the target | |
261 | @var{target}. Return a pointer to the created BFD. | |
262 | ||
263 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
264 | that function. | |
265 | ||
266 | If <<NULL>> is returned then an error has occured. Possible errors | |
267 | are <<bfd_error_no_memory>>, <<bfd_error_invalid_target>> or | |
268 | <<system_call>> error. | |
269 | */ | |
270 | ||
271 | bfd * | |
272 | bfd_openr (const char *filename, const char *target) | |
273 | { | |
274 | return bfd_fopen (filename, target, FOPEN_RB, -1); | |
275 | } | |
276 | ||
252b5132 RH |
277 | /* Don't try to `optimize' this function: |
278 | ||
279 | o - We lock using stack space so that interrupting the locking | |
280 | won't cause a storage leak. | |
281 | o - We open the file stream last, since we don't want to have to | |
282 | close it if anything goes wrong. Closing the stream means closing | |
c4f3d130 | 283 | the file descriptor too, even though we didn't open it. */ |
252b5132 RH |
284 | /* |
285 | FUNCTION | |
7c4a37eb | 286 | bfd_fdopenr |
252b5132 RH |
287 | |
288 | SYNOPSIS | |
c58b9523 | 289 | bfd *bfd_fdopenr (const char *filename, const char *target, int fd); |
252b5132 RH |
290 | |
291 | DESCRIPTION | |
7c4a37eb AM |
292 | <<bfd_fdopenr>> is to <<bfd_fopenr>> much like <<fdopen>> is to |
293 | <<fopen>>. It opens a BFD on a file already described by the | |
294 | @var{fd} supplied. | |
295 | ||
296 | When the file is later <<bfd_close>>d, the file descriptor will | |
297 | be closed. If the caller desires that this file descriptor be | |
298 | cached by BFD (opened as needed, closed as needed to free | |
299 | descriptors for other opens), with the supplied @var{fd} used as | |
300 | an initial file descriptor (but subject to closure at any time), | |
301 | call bfd_set_cacheable(bfd, 1) on the returned BFD. The default | |
7dee875e | 302 | is to assume no caching; the file descriptor will remain open |
7c4a37eb AM |
303 | until <<bfd_close>>, and will not be affected by BFD operations |
304 | on other files. | |
305 | ||
306 | Possible errors are <<bfd_error_no_memory>>, | |
307 | <<bfd_error_invalid_target>> and <<bfd_error_system_call>>. | |
6f0c7050 TT |
308 | |
309 | On error, @var{fd} is closed. | |
252b5132 RH |
310 | */ |
311 | ||
312 | bfd * | |
c58b9523 | 313 | bfd_fdopenr (const char *filename, const char *target, int fd) |
252b5132 | 314 | { |
2d0123b7 MM |
315 | const char *mode; |
316 | #if defined(HAVE_FCNTL) && defined(F_GETFL) | |
252b5132 | 317 | int fdflags; |
2d0123b7 | 318 | #endif |
252b5132 | 319 | |
252b5132 | 320 | #if ! defined(HAVE_FCNTL) || ! defined(F_GETFL) |
2d0123b7 | 321 | mode = FOPEN_RUB; /* Assume full access. */ |
252b5132 RH |
322 | #else |
323 | fdflags = fcntl (fd, F_GETFL, NULL); | |
767e34d1 | 324 | if (fdflags == -1) |
d83747fa | 325 | { |
6f0c7050 TT |
326 | int save = errno; |
327 | ||
328 | close (fd); | |
329 | errno = save; | |
d83747fa AM |
330 | bfd_set_error (bfd_error_system_call); |
331 | return NULL; | |
332 | } | |
252b5132 | 333 | |
c4f3d130 | 334 | /* (O_ACCMODE) parens are to avoid Ultrix header file bug. */ |
252b5132 RH |
335 | switch (fdflags & (O_ACCMODE)) |
336 | { | |
dfab97d6 MM |
337 | case O_RDONLY: mode = FOPEN_RB; break; |
338 | case O_WRONLY: mode = FOPEN_RUB; break; | |
339 | case O_RDWR: mode = FOPEN_RUB; break; | |
252b5132 RH |
340 | default: abort (); |
341 | } | |
342 | #endif | |
343 | ||
2d0123b7 | 344 | return bfd_fopen (filename, target, mode, fd); |
252b5132 RH |
345 | } |
346 | ||
347 | /* | |
348 | FUNCTION | |
349 | bfd_openstreamr | |
350 | ||
351 | SYNOPSIS | |
c58b9523 | 352 | bfd *bfd_openstreamr (const char *, const char *, void *); |
252b5132 RH |
353 | |
354 | DESCRIPTION | |
355 | ||
356 | Open a BFD for read access on an existing stdio stream. When | |
357 | the BFD is passed to <<bfd_close>>, the stream will be closed. | |
358 | */ | |
359 | ||
360 | bfd * | |
c58b9523 | 361 | bfd_openstreamr (const char *filename, const char *target, void *streamarg) |
252b5132 | 362 | { |
a50b1753 | 363 | FILE *stream = (FILE *) streamarg; |
252b5132 RH |
364 | bfd *nbfd; |
365 | const bfd_target *target_vec; | |
366 | ||
367 | nbfd = _bfd_new_bfd (); | |
368 | if (nbfd == NULL) | |
369 | return NULL; | |
370 | ||
371 | target_vec = bfd_find_target (target, nbfd); | |
372 | if (target_vec == NULL) | |
373 | { | |
73e87d70 | 374 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
375 | return NULL; |
376 | } | |
377 | ||
c58b9523 | 378 | nbfd->iostream = stream; |
252b5132 RH |
379 | nbfd->filename = filename; |
380 | nbfd->direction = read_direction; | |
dc810e39 | 381 | |
252b5132 RH |
382 | if (! bfd_cache_init (nbfd)) |
383 | { | |
73e87d70 | 384 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
385 | return NULL; |
386 | } | |
387 | ||
388 | return nbfd; | |
389 | } | |
40838a72 AC |
390 | |
391 | /* | |
392 | FUNCTION | |
393 | bfd_openr_iovec | |
394 | ||
395 | SYNOPSIS | |
396 | bfd *bfd_openr_iovec (const char *filename, const char *target, | |
e7f8eadb DK |
397 | void *(*open_func) (struct bfd *nbfd, |
398 | void *open_closure), | |
40838a72 | 399 | void *open_closure, |
e7f8eadb DK |
400 | file_ptr (*pread_func) (struct bfd *nbfd, |
401 | void *stream, | |
402 | void *buf, | |
403 | file_ptr nbytes, | |
404 | file_ptr offset), | |
405 | int (*close_func) (struct bfd *nbfd, | |
406 | void *stream), | |
407 | int (*stat_func) (struct bfd *abfd, | |
408 | void *stream, | |
409 | struct stat *sb)); | |
40838a72 AC |
410 | |
411 | DESCRIPTION | |
412 | ||
413 | Create and return a BFD backed by a read-only @var{stream}. | |
e7f8eadb DK |
414 | The @var{stream} is created using @var{open_func}, accessed using |
415 | @var{pread_func} and destroyed using @var{close_func}. | |
40838a72 AC |
416 | |
417 | Calls <<bfd_find_target>>, so @var{target} is interpreted as by | |
418 | that function. | |
419 | ||
e7f8eadb | 420 | Calls @var{open_func} (which can call <<bfd_zalloc>> and |
40838a72 | 421 | <<bfd_get_filename>>) to obtain the read-only stream backing |
e7f8eadb | 422 | the BFD. @var{open_func} either succeeds returning the |
40838a72 AC |
423 | non-<<NULL>> @var{stream}, or fails returning <<NULL>> |
424 | (setting <<bfd_error>>). | |
425 | ||
e7f8eadb | 426 | Calls @var{pread_func} to request @var{nbytes} of data from |
40838a72 | 427 | @var{stream} starting at @var{offset} (e.g., via a call to |
e7f8eadb | 428 | <<bfd_read>>). @var{pread_func} either succeeds returning the |
40838a72 AC |
429 | number of bytes read (which can be less than @var{nbytes} when |
430 | end-of-file), or fails returning -1 (setting <<bfd_error>>). | |
431 | ||
e7f8eadb DK |
432 | Calls @var{close_func} when the BFD is later closed using |
433 | <<bfd_close>>. @var{close_func} either succeeds returning 0, or | |
40838a72 AC |
434 | fails returning -1 (setting <<bfd_error>>). |
435 | ||
e7f8eadb DK |
436 | Calls @var{stat_func} to fill in a stat structure for bfd_stat, |
437 | bfd_get_size, and bfd_get_mtime calls. @var{stat_func} returns 0 | |
f6cf9273 AM |
438 | on success, or returns -1 on failure (setting <<bfd_error>>). |
439 | ||
40838a72 AC |
440 | If <<bfd_openr_iovec>> returns <<NULL>> then an error has |
441 | occurred. Possible errors are <<bfd_error_no_memory>>, | |
442 | <<bfd_error_invalid_target>> and <<bfd_error_system_call>>. | |
443 | ||
444 | */ | |
445 | ||
446 | struct opncls | |
447 | { | |
448 | void *stream; | |
449 | file_ptr (*pread) (struct bfd *abfd, void *stream, void *buf, | |
450 | file_ptr nbytes, file_ptr offset); | |
451 | int (*close) (struct bfd *abfd, void *stream); | |
f6cf9273 | 452 | int (*stat) (struct bfd *abfd, void *stream, struct stat *sb); |
40838a72 AC |
453 | file_ptr where; |
454 | }; | |
455 | ||
456 | static file_ptr | |
457 | opncls_btell (struct bfd *abfd) | |
458 | { | |
a50b1753 | 459 | struct opncls *vec = (struct opncls *) abfd->iostream; |
40838a72 AC |
460 | return vec->where; |
461 | } | |
462 | ||
463 | static int | |
464 | opncls_bseek (struct bfd *abfd, file_ptr offset, int whence) | |
465 | { | |
a50b1753 | 466 | struct opncls *vec = (struct opncls *) abfd->iostream; |
40838a72 AC |
467 | switch (whence) |
468 | { | |
469 | case SEEK_SET: vec->where = offset; break; | |
470 | case SEEK_CUR: vec->where += offset; break; | |
471 | case SEEK_END: return -1; | |
472 | } | |
473 | return 0; | |
474 | } | |
475 | ||
476 | static file_ptr | |
477 | opncls_bread (struct bfd *abfd, void *buf, file_ptr nbytes) | |
478 | { | |
a50b1753 | 479 | struct opncls *vec = (struct opncls *) abfd->iostream; |
0709bb22 | 480 | file_ptr nread = (vec->pread) (abfd, vec->stream, buf, nbytes, vec->where); |
40838a72 AC |
481 | if (nread < 0) |
482 | return nread; | |
483 | vec->where += nread; | |
484 | return nread; | |
485 | } | |
486 | ||
487 | static file_ptr | |
488 | opncls_bwrite (struct bfd *abfd ATTRIBUTE_UNUSED, | |
489 | const void *where ATTRIBUTE_UNUSED, | |
490 | file_ptr nbytes ATTRIBUTE_UNUSED) | |
491 | { | |
492 | return -1; | |
493 | } | |
494 | ||
405bf443 | 495 | static int |
40838a72 AC |
496 | opncls_bclose (struct bfd *abfd) |
497 | { | |
a50b1753 | 498 | struct opncls *vec = (struct opncls *) abfd->iostream; |
40838a72 AC |
499 | /* Since the VEC's memory is bound to the bfd deleting the bfd will |
500 | free it. */ | |
501 | int status = 0; | |
502 | if (vec->close != NULL) | |
0709bb22 | 503 | status = (vec->close) (abfd, vec->stream); |
40838a72 | 504 | abfd->iostream = NULL; |
405bf443 | 505 | return status; |
40838a72 AC |
506 | } |
507 | ||
508 | static int | |
509 | opncls_bflush (struct bfd *abfd ATTRIBUTE_UNUSED) | |
510 | { | |
511 | return 0; | |
512 | } | |
513 | ||
514 | static int | |
f6cf9273 | 515 | opncls_bstat (struct bfd *abfd, struct stat *sb) |
40838a72 | 516 | { |
a50b1753 | 517 | struct opncls *vec = (struct opncls *) abfd->iostream; |
f6cf9273 | 518 | |
40838a72 | 519 | memset (sb, 0, sizeof (*sb)); |
f6cf9273 AM |
520 | if (vec->stat == NULL) |
521 | return 0; | |
522 | ||
523 | return (vec->stat) (abfd, vec->stream, sb); | |
40838a72 AC |
524 | } |
525 | ||
25b88f33 PP |
526 | static void * |
527 | opncls_bmmap (struct bfd *abfd ATTRIBUTE_UNUSED, | |
528 | void *addr ATTRIBUTE_UNUSED, | |
529 | bfd_size_type len ATTRIBUTE_UNUSED, | |
530 | int prot ATTRIBUTE_UNUSED, | |
531 | int flags ATTRIBUTE_UNUSED, | |
4c95ab76 TG |
532 | file_ptr offset ATTRIBUTE_UNUSED, |
533 | void **map_addr ATTRIBUTE_UNUSED, | |
534 | bfd_size_type *map_len ATTRIBUTE_UNUSED) | |
25b88f33 PP |
535 | { |
536 | return (void *) -1; | |
537 | } | |
538 | ||
40838a72 AC |
539 | static const struct bfd_iovec opncls_iovec = { |
540 | &opncls_bread, &opncls_bwrite, &opncls_btell, &opncls_bseek, | |
25b88f33 | 541 | &opncls_bclose, &opncls_bflush, &opncls_bstat, &opncls_bmmap |
40838a72 AC |
542 | }; |
543 | ||
544 | bfd * | |
545 | bfd_openr_iovec (const char *filename, const char *target, | |
662e4701 | 546 | void *(*open_p) (struct bfd *, void *), |
40838a72 | 547 | void *open_closure, |
662e4701 L |
548 | file_ptr (*pread_p) (struct bfd *, void *, void *, |
549 | file_ptr, file_ptr), | |
550 | int (*close_p) (struct bfd *, void *), | |
551 | int (*stat_p) (struct bfd *, void *, struct stat *)) | |
40838a72 AC |
552 | { |
553 | bfd *nbfd; | |
554 | const bfd_target *target_vec; | |
555 | struct opncls *vec; | |
556 | void *stream; | |
557 | ||
558 | nbfd = _bfd_new_bfd (); | |
559 | if (nbfd == NULL) | |
560 | return NULL; | |
561 | ||
562 | target_vec = bfd_find_target (target, nbfd); | |
563 | if (target_vec == NULL) | |
564 | { | |
565 | _bfd_delete_bfd (nbfd); | |
566 | return NULL; | |
567 | } | |
568 | ||
569 | nbfd->filename = filename; | |
570 | nbfd->direction = read_direction; | |
571 | ||
662e4701 L |
572 | /* `open_p (...)' would get expanded by an the open(2) syscall macro. */ |
573 | stream = (*open_p) (nbfd, open_closure); | |
40838a72 AC |
574 | if (stream == NULL) |
575 | { | |
576 | _bfd_delete_bfd (nbfd); | |
577 | return NULL; | |
578 | } | |
579 | ||
a50b1753 | 580 | vec = (struct opncls *) bfd_zalloc (nbfd, sizeof (struct opncls)); |
40838a72 | 581 | vec->stream = stream; |
662e4701 L |
582 | vec->pread = pread_p; |
583 | vec->close = close_p; | |
584 | vec->stat = stat_p; | |
40838a72 AC |
585 | |
586 | nbfd->iovec = &opncls_iovec; | |
587 | nbfd->iostream = vec; | |
588 | ||
589 | return nbfd; | |
590 | } | |
252b5132 | 591 | \f |
c4f3d130 NC |
592 | /* bfd_openw -- open for writing. |
593 | Returns a pointer to a freshly-allocated BFD on success, or NULL. | |
252b5132 | 594 | |
c4f3d130 | 595 | See comment by bfd_fdopenr before you try to modify this function. */ |
252b5132 RH |
596 | |
597 | /* | |
598 | FUNCTION | |
599 | bfd_openw | |
600 | ||
601 | SYNOPSIS | |
c58b9523 | 602 | bfd *bfd_openw (const char *filename, const char *target); |
252b5132 RH |
603 | |
604 | DESCRIPTION | |
605 | Create a BFD, associated with file @var{filename}, using the | |
606 | file format @var{target}, and return a pointer to it. | |
607 | ||
608 | Possible errors are <<bfd_error_system_call>>, <<bfd_error_no_memory>>, | |
609 | <<bfd_error_invalid_target>>. | |
610 | */ | |
611 | ||
612 | bfd * | |
c58b9523 | 613 | bfd_openw (const char *filename, const char *target) |
252b5132 RH |
614 | { |
615 | bfd *nbfd; | |
616 | const bfd_target *target_vec; | |
617 | ||
252b5132 | 618 | /* nbfd has to point to head of malloc'ed block so that bfd_close may |
c4f3d130 | 619 | reclaim it correctly. */ |
252b5132 RH |
620 | nbfd = _bfd_new_bfd (); |
621 | if (nbfd == NULL) | |
622 | return NULL; | |
623 | ||
624 | target_vec = bfd_find_target (target, nbfd); | |
625 | if (target_vec == NULL) | |
626 | { | |
73e87d70 | 627 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
628 | return NULL; |
629 | } | |
630 | ||
631 | nbfd->filename = filename; | |
632 | nbfd->direction = write_direction; | |
633 | ||
634 | if (bfd_open_file (nbfd) == NULL) | |
635 | { | |
c4f3d130 NC |
636 | /* File not writeable, etc. */ |
637 | bfd_set_error (bfd_error_system_call); | |
73e87d70 | 638 | _bfd_delete_bfd (nbfd); |
252b5132 RH |
639 | return NULL; |
640 | } | |
641 | ||
642 | return nbfd; | |
643 | } | |
644 | ||
8c7d38e8 NC |
645 | static inline void |
646 | _maybe_make_executable (bfd * abfd) | |
647 | { | |
648 | /* If the file was open for writing and is now executable, | |
649 | make it so. */ | |
650 | if (abfd->direction == write_direction | |
dbde1c12 | 651 | && (abfd->flags & (EXEC_P | DYNAMIC)) != 0) |
8c7d38e8 NC |
652 | { |
653 | struct stat buf; | |
654 | ||
655 | if (stat (abfd->filename, &buf) == 0 | |
656 | /* Do not attempt to change non-regular files. This is | |
657 | here especially for configure scripts and kernel builds | |
658 | which run tests with "ld [...] -o /dev/null". */ | |
659 | && S_ISREG(buf.st_mode)) | |
660 | { | |
661 | unsigned int mask = umask (0); | |
662 | ||
663 | umask (mask); | |
664 | chmod (abfd->filename, | |
665 | (0777 | |
666 | & (buf.st_mode | ((S_IXUSR | S_IXGRP | S_IXOTH) &~ mask)))); | |
667 | } | |
668 | } | |
669 | } | |
670 | ||
252b5132 RH |
671 | /* |
672 | ||
673 | FUNCTION | |
674 | bfd_close | |
675 | ||
676 | SYNOPSIS | |
b34976b6 | 677 | bfd_boolean bfd_close (bfd *abfd); |
252b5132 RH |
678 | |
679 | DESCRIPTION | |
680 | ||
7c4a37eb AM |
681 | Close a BFD. If the BFD was open for writing, then pending |
682 | operations are completed and the file written out and closed. | |
683 | If the created file is executable, then <<chmod>> is called | |
684 | to mark it as such. | |
252b5132 RH |
685 | |
686 | All memory attached to the BFD is released. | |
687 | ||
688 | The file descriptor associated with the BFD is closed (even | |
689 | if it was passed in to BFD by <<bfd_fdopenr>>). | |
690 | ||
691 | RETURNS | |
b34976b6 | 692 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
693 | */ |
694 | ||
695 | ||
b34976b6 | 696 | bfd_boolean |
c58b9523 | 697 | bfd_close (bfd *abfd) |
252b5132 | 698 | { |
b34976b6 | 699 | bfd_boolean ret; |
252b5132 | 700 | |
c4f3d130 | 701 | if (bfd_write_p (abfd)) |
252b5132 RH |
702 | { |
703 | if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd))) | |
b34976b6 | 704 | return FALSE; |
252b5132 RH |
705 | } |
706 | ||
707 | if (! BFD_SEND (abfd, _close_and_cleanup, (abfd))) | |
b34976b6 | 708 | return FALSE; |
252b5132 | 709 | |
405bf443 | 710 | ret = abfd->iovec->bclose (abfd) == 0; |
252b5132 | 711 | |
8c7d38e8 NC |
712 | if (ret) |
713 | _maybe_make_executable (abfd); | |
252b5132 | 714 | |
73e87d70 | 715 | _bfd_delete_bfd (abfd); |
252b5132 RH |
716 | |
717 | return ret; | |
718 | } | |
719 | ||
720 | /* | |
721 | FUNCTION | |
722 | bfd_close_all_done | |
723 | ||
724 | SYNOPSIS | |
b34976b6 | 725 | bfd_boolean bfd_close_all_done (bfd *); |
252b5132 RH |
726 | |
727 | DESCRIPTION | |
7c4a37eb AM |
728 | Close a BFD. Differs from <<bfd_close>> since it does not |
729 | complete any pending operations. This routine would be used | |
730 | if the application had just used BFD for swapping and didn't | |
731 | want to use any of the writing code. | |
252b5132 RH |
732 | |
733 | If the created file is executable, then <<chmod>> is called | |
734 | to mark it as such. | |
735 | ||
736 | All memory attached to the BFD is released. | |
737 | ||
738 | RETURNS | |
b34976b6 | 739 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
740 | */ |
741 | ||
b34976b6 | 742 | bfd_boolean |
c58b9523 | 743 | bfd_close_all_done (bfd *abfd) |
252b5132 | 744 | { |
b34976b6 | 745 | bfd_boolean ret; |
252b5132 RH |
746 | |
747 | ret = bfd_cache_close (abfd); | |
748 | ||
8c7d38e8 NC |
749 | if (ret) |
750 | _maybe_make_executable (abfd); | |
252b5132 | 751 | |
73e87d70 | 752 | _bfd_delete_bfd (abfd); |
252b5132 RH |
753 | |
754 | return ret; | |
755 | } | |
756 | ||
757 | /* | |
758 | FUNCTION | |
759 | bfd_create | |
760 | ||
761 | SYNOPSIS | |
c58b9523 | 762 | bfd *bfd_create (const char *filename, bfd *templ); |
252b5132 RH |
763 | |
764 | DESCRIPTION | |
7c4a37eb AM |
765 | Create a new BFD in the manner of <<bfd_openw>>, but without |
766 | opening a file. The new BFD takes the target from the target | |
fc1cfaa5 | 767 | used by @var{templ}. The format is always set to <<bfd_object>>. |
252b5132 RH |
768 | */ |
769 | ||
770 | bfd * | |
c58b9523 | 771 | bfd_create (const char *filename, bfd *templ) |
252b5132 RH |
772 | { |
773 | bfd *nbfd; | |
774 | ||
775 | nbfd = _bfd_new_bfd (); | |
776 | if (nbfd == NULL) | |
777 | return NULL; | |
778 | nbfd->filename = filename; | |
779 | if (templ) | |
780 | nbfd->xvec = templ->xvec; | |
781 | nbfd->direction = no_direction; | |
782 | bfd_set_format (nbfd, bfd_object); | |
c4f3d130 | 783 | |
252b5132 RH |
784 | return nbfd; |
785 | } | |
786 | ||
787 | /* | |
788 | FUNCTION | |
789 | bfd_make_writable | |
790 | ||
791 | SYNOPSIS | |
b34976b6 | 792 | bfd_boolean bfd_make_writable (bfd *abfd); |
252b5132 RH |
793 | |
794 | DESCRIPTION | |
795 | Takes a BFD as created by <<bfd_create>> and converts it | |
796 | into one like as returned by <<bfd_openw>>. It does this | |
797 | by converting the BFD to BFD_IN_MEMORY. It's assumed that | |
798 | you will call <<bfd_make_readable>> on this bfd later. | |
799 | ||
800 | RETURNS | |
b34976b6 | 801 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. |
252b5132 RH |
802 | */ |
803 | ||
b34976b6 | 804 | bfd_boolean |
c58b9523 | 805 | bfd_make_writable (bfd *abfd) |
252b5132 RH |
806 | { |
807 | struct bfd_in_memory *bim; | |
808 | ||
809 | if (abfd->direction != no_direction) | |
810 | { | |
811 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 812 | return FALSE; |
252b5132 RH |
813 | } |
814 | ||
a50b1753 | 815 | bim = (struct bfd_in_memory *) bfd_malloc (sizeof (struct bfd_in_memory)); |
f6eea5ae MS |
816 | if (bim == NULL) |
817 | return FALSE; /* bfd_error already set. */ | |
c58b9523 | 818 | abfd->iostream = bim; |
c4f3d130 | 819 | /* bfd_bwrite will grow these as needed. */ |
252b5132 RH |
820 | bim->size = 0; |
821 | bim->buffer = 0; | |
822 | ||
823 | abfd->flags |= BFD_IN_MEMORY; | |
65077aa8 TG |
824 | abfd->iovec = &_bfd_memory_iovec; |
825 | abfd->origin = 0; | |
252b5132 RH |
826 | abfd->direction = write_direction; |
827 | abfd->where = 0; | |
828 | ||
b34976b6 | 829 | return TRUE; |
252b5132 RH |
830 | } |
831 | ||
832 | /* | |
833 | FUNCTION | |
834 | bfd_make_readable | |
835 | ||
836 | SYNOPSIS | |
b34976b6 | 837 | bfd_boolean bfd_make_readable (bfd *abfd); |
252b5132 RH |
838 | |
839 | DESCRIPTION | |
840 | Takes a BFD as created by <<bfd_create>> and | |
841 | <<bfd_make_writable>> and converts it into one like as | |
842 | returned by <<bfd_openr>>. It does this by writing the | |
843 | contents out to the memory buffer, then reversing the | |
844 | direction. | |
845 | ||
846 | RETURNS | |
b34976b6 | 847 | <<TRUE>> is returned if all is ok, otherwise <<FALSE>>. */ |
252b5132 | 848 | |
b34976b6 | 849 | bfd_boolean |
c58b9523 | 850 | bfd_make_readable (bfd *abfd) |
252b5132 RH |
851 | { |
852 | if (abfd->direction != write_direction || !(abfd->flags & BFD_IN_MEMORY)) | |
853 | { | |
854 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 855 | return FALSE; |
252b5132 RH |
856 | } |
857 | ||
858 | if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd))) | |
b34976b6 | 859 | return FALSE; |
252b5132 RH |
860 | |
861 | if (! BFD_SEND (abfd, _close_and_cleanup, (abfd))) | |
b34976b6 | 862 | return FALSE; |
252b5132 | 863 | |
252b5132 RH |
864 | abfd->arch_info = &bfd_default_arch_struct; |
865 | ||
866 | abfd->where = 0; | |
252b5132 | 867 | abfd->format = bfd_unknown; |
c58b9523 | 868 | abfd->my_archive = NULL; |
dc810e39 | 869 | abfd->origin = 0; |
b34976b6 AM |
870 | abfd->opened_once = FALSE; |
871 | abfd->output_has_begun = FALSE; | |
252b5132 | 872 | abfd->section_count = 0; |
c58b9523 | 873 | abfd->usrdata = NULL; |
b34976b6 | 874 | abfd->cacheable = FALSE; |
9e2278f5 | 875 | abfd->flags |= BFD_IN_MEMORY; |
b34976b6 | 876 | abfd->mtime_set = FALSE; |
252b5132 | 877 | |
b34976b6 | 878 | abfd->target_defaulted = TRUE; |
252b5132 RH |
879 | abfd->direction = read_direction; |
880 | abfd->sections = 0; | |
881 | abfd->symcount = 0; | |
882 | abfd->outsymbols = 0; | |
883 | abfd->tdata.any = 0; | |
884 | ||
e54fdaa5 AM |
885 | bfd_section_list_clear (abfd); |
886 | bfd_check_format (abfd, bfd_object); | |
252b5132 | 887 | |
b34976b6 | 888 | return TRUE; |
252b5132 RH |
889 | } |
890 | ||
891 | /* | |
59a9808d | 892 | FUNCTION |
252b5132 RH |
893 | bfd_alloc |
894 | ||
895 | SYNOPSIS | |
0fdea5ce | 896 | void *bfd_alloc (bfd *abfd, bfd_size_type wanted); |
252b5132 RH |
897 | |
898 | DESCRIPTION | |
899 | Allocate a block of @var{wanted} bytes of memory attached to | |
900 | <<abfd>> and return a pointer to it. | |
901 | */ | |
902 | ||
c58b9523 AM |
903 | void * |
904 | bfd_alloc (bfd *abfd, bfd_size_type size) | |
252b5132 | 905 | { |
c58b9523 | 906 | void *ret; |
252b5132 | 907 | |
dc810e39 AM |
908 | if (size != (unsigned long) size) |
909 | { | |
910 | bfd_set_error (bfd_error_no_memory); | |
911 | return NULL; | |
912 | } | |
913 | ||
a50b1753 | 914 | ret = objalloc_alloc ((struct objalloc *) abfd->memory, (unsigned long) size); |
252b5132 RH |
915 | if (ret == NULL) |
916 | bfd_set_error (bfd_error_no_memory); | |
917 | return ret; | |
918 | } | |
919 | ||
d0fb9a8d JJ |
920 | /* |
921 | INTERNAL_FUNCTION | |
922 | bfd_alloc2 | |
923 | ||
924 | SYNOPSIS | |
925 | void *bfd_alloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size); | |
926 | ||
927 | DESCRIPTION | |
928 | Allocate a block of @var{nmemb} elements of @var{size} bytes each | |
929 | of memory attached to <<abfd>> and return a pointer to it. | |
930 | */ | |
931 | ||
932 | void * | |
933 | bfd_alloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size) | |
934 | { | |
935 | void *ret; | |
936 | ||
937 | if ((nmemb | size) >= HALF_BFD_SIZE_TYPE | |
938 | && size != 0 | |
939 | && nmemb > ~(bfd_size_type) 0 / size) | |
940 | { | |
941 | bfd_set_error (bfd_error_no_memory); | |
942 | return NULL; | |
943 | } | |
944 | ||
945 | size *= nmemb; | |
946 | ||
947 | if (size != (unsigned long) size) | |
948 | { | |
949 | bfd_set_error (bfd_error_no_memory); | |
950 | return NULL; | |
951 | } | |
952 | ||
a50b1753 | 953 | ret = objalloc_alloc ((struct objalloc *) abfd->memory, (unsigned long) size); |
d0fb9a8d JJ |
954 | if (ret == NULL) |
955 | bfd_set_error (bfd_error_no_memory); | |
956 | return ret; | |
957 | } | |
958 | ||
c3e8c140 | 959 | /* |
59a9808d | 960 | FUNCTION |
c3e8c140 BE |
961 | bfd_zalloc |
962 | ||
963 | SYNOPSIS | |
964 | void *bfd_zalloc (bfd *abfd, bfd_size_type wanted); | |
965 | ||
966 | DESCRIPTION | |
967 | Allocate a block of @var{wanted} bytes of zeroed memory | |
968 | attached to <<abfd>> and return a pointer to it. | |
969 | */ | |
970 | ||
c58b9523 AM |
971 | void * |
972 | bfd_zalloc (bfd *abfd, bfd_size_type size) | |
252b5132 | 973 | { |
c58b9523 | 974 | void *res; |
252b5132 RH |
975 | |
976 | res = bfd_alloc (abfd, size); | |
977 | if (res) | |
dc810e39 | 978 | memset (res, 0, (size_t) size); |
252b5132 RH |
979 | return res; |
980 | } | |
981 | ||
d0fb9a8d JJ |
982 | /* |
983 | INTERNAL_FUNCTION | |
984 | bfd_zalloc2 | |
985 | ||
986 | SYNOPSIS | |
987 | void *bfd_zalloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size); | |
988 | ||
989 | DESCRIPTION | |
990 | Allocate a block of @var{nmemb} elements of @var{size} bytes each | |
991 | of zeroed memory attached to <<abfd>> and return a pointer to it. | |
992 | */ | |
993 | ||
994 | void * | |
995 | bfd_zalloc2 (bfd *abfd, bfd_size_type nmemb, bfd_size_type size) | |
996 | { | |
997 | void *res; | |
998 | ||
999 | if ((nmemb | size) >= HALF_BFD_SIZE_TYPE | |
1000 | && size != 0 | |
1001 | && nmemb > ~(bfd_size_type) 0 / size) | |
1002 | { | |
1003 | bfd_set_error (bfd_error_no_memory); | |
1004 | return NULL; | |
1005 | } | |
1006 | ||
1007 | size *= nmemb; | |
1008 | ||
1009 | res = bfd_alloc (abfd, size); | |
1010 | if (res) | |
1011 | memset (res, 0, (size_t) size); | |
1012 | return res; | |
1013 | } | |
1014 | ||
73e87d70 AM |
1015 | /* Free a block allocated for a BFD. |
1016 | Note: Also frees all more recently allocated blocks! */ | |
252b5132 RH |
1017 | |
1018 | void | |
c58b9523 | 1019 | bfd_release (bfd *abfd, void *block) |
252b5132 RH |
1020 | { |
1021 | objalloc_free_block ((struct objalloc *) abfd->memory, block); | |
1022 | } | |
31f7ba04 NC |
1023 | |
1024 | ||
f12123c0 AM |
1025 | /* |
1026 | GNU Extension: separate debug-info files | |
1027 | ||
31f7ba04 NC |
1028 | The idea here is that a special section called .gnu_debuglink might be |
1029 | embedded in a binary file, which indicates that some *other* file | |
1030 | contains the real debugging information. This special section contains a | |
1031 | filename and CRC32 checksum, which we read and resolve to another file, | |
1032 | if it exists. | |
1033 | ||
1034 | This facilitates "optional" provision of debugging information, without | |
1035 | having to provide two complete copies of every binary object (with and | |
95e34fb4 NC |
1036 | without debug symbols). */ |
1037 | ||
1038 | #define GNU_DEBUGLINK ".gnu_debuglink" | |
1039 | #define GNU_DEBUGALTLINK ".gnu_debugaltlink" | |
31f7ba04 | 1040 | |
31f7ba04 | 1041 | /* |
2593f09a NC |
1042 | FUNCTION |
1043 | bfd_calc_gnu_debuglink_crc32 | |
31f7ba04 NC |
1044 | |
1045 | SYNOPSIS | |
c58b9523 AM |
1046 | unsigned long bfd_calc_gnu_debuglink_crc32 |
1047 | (unsigned long crc, const unsigned char *buf, bfd_size_type len); | |
31f7ba04 NC |
1048 | |
1049 | DESCRIPTION | |
2593f09a NC |
1050 | Computes a CRC value as used in the .gnu_debuglink section. |
1051 | Advances the previously computed @var{crc} value by computing | |
1052 | and adding in the crc32 for @var{len} bytes of @var{buf}. | |
1053 | ||
1054 | RETURNS | |
1055 | Return the updated CRC32 value. | |
f12123c0 | 1056 | */ |
31f7ba04 | 1057 | |
2593f09a | 1058 | unsigned long |
c58b9523 AM |
1059 | bfd_calc_gnu_debuglink_crc32 (unsigned long crc, |
1060 | const unsigned char *buf, | |
1061 | bfd_size_type len) | |
31f7ba04 NC |
1062 | { |
1063 | static const unsigned long crc32_table[256] = | |
1064 | { | |
1065 | 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, | |
1066 | 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, | |
1067 | 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, | |
1068 | 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, | |
1069 | 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, | |
1070 | 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, | |
1071 | 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, | |
1072 | 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, | |
1073 | 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, | |
1074 | 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, | |
1075 | 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, | |
1076 | 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, | |
1077 | 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, | |
1078 | 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, | |
1079 | 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, | |
1080 | 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, | |
1081 | 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, | |
1082 | 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, | |
1083 | 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, | |
1084 | 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, | |
1085 | 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, | |
1086 | 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, | |
1087 | 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, | |
1088 | 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, | |
1089 | 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, | |
1090 | 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, | |
1091 | 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, | |
1092 | 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, | |
1093 | 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, | |
1094 | 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, | |
1095 | 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, | |
1096 | 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, | |
1097 | 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, | |
1098 | 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, | |
1099 | 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, | |
1100 | 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, | |
1101 | 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, | |
1102 | 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, | |
1103 | 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, | |
1104 | 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, | |
1105 | 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, | |
1106 | 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, | |
1107 | 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, | |
1108 | 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, | |
1109 | 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, | |
1110 | 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, | |
1111 | 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, | |
1112 | 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, | |
1113 | 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, | |
1114 | 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, | |
1115 | 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, | |
1116 | 0x2d02ef8d | |
1117 | }; | |
1118 | const unsigned char *end; | |
1119 | ||
1120 | crc = ~crc & 0xffffffff; | |
1121 | for (end = buf + len; buf < end; ++ buf) | |
1122 | crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8); | |
5bb3703f | 1123 | return ~crc & 0xffffffff; |
31f7ba04 NC |
1124 | } |
1125 | ||
1126 | ||
1127 | /* | |
cc0ea93c TT |
1128 | FUNCTION |
1129 | bfd_get_debug_link_info | |
31f7ba04 NC |
1130 | |
1131 | SYNOPSIS | |
cc0ea93c | 1132 | char *bfd_get_debug_link_info (bfd *abfd, unsigned long *crc32_out); |
31f7ba04 NC |
1133 | |
1134 | DESCRIPTION | |
1135 | fetch the filename and CRC32 value for any separate debuginfo | |
1136 | associated with @var{abfd}. Return NULL if no such info found, | |
cc0ea93c TT |
1137 | otherwise return filename and update @var{crc32_out}. The |
1138 | returned filename is allocated with @code{malloc}; freeing it | |
1139 | is the responsibility of the caller. | |
31f7ba04 NC |
1140 | */ |
1141 | ||
cc0ea93c TT |
1142 | char * |
1143 | bfd_get_debug_link_info (bfd *abfd, unsigned long *crc32_out) | |
31f7ba04 | 1144 | { |
eea6121a | 1145 | asection *sect; |
31f7ba04 | 1146 | unsigned long crc32; |
eea6121a | 1147 | bfd_byte *contents; |
31f7ba04 | 1148 | int crc_offset; |
f075ee0c | 1149 | char *name; |
31f7ba04 NC |
1150 | |
1151 | BFD_ASSERT (abfd); | |
1152 | BFD_ASSERT (crc32_out); | |
1153 | ||
2593f09a | 1154 | sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK); |
31f7ba04 NC |
1155 | |
1156 | if (sect == NULL) | |
1157 | return NULL; | |
1158 | ||
eea6121a | 1159 | if (!bfd_malloc_and_get_section (abfd, sect, &contents)) |
31f7ba04 | 1160 | { |
eea6121a AM |
1161 | if (contents != NULL) |
1162 | free (contents); | |
31f7ba04 NC |
1163 | return NULL; |
1164 | } | |
1165 | ||
1166 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
f075ee0c AM |
1167 | name = (char *) contents; |
1168 | crc_offset = strlen (name) + 1; | |
31f7ba04 NC |
1169 | crc_offset = (crc_offset + 3) & ~3; |
1170 | ||
c58b9523 | 1171 | crc32 = bfd_get_32 (abfd, contents + crc_offset); |
31f7ba04 NC |
1172 | |
1173 | *crc32_out = crc32; | |
f075ee0c | 1174 | return name; |
31f7ba04 NC |
1175 | } |
1176 | ||
95e34fb4 NC |
1177 | /* |
1178 | FUNCTION | |
1179 | bfd_get_alt_debug_link_info | |
1180 | ||
1181 | SYNOPSIS | |
acd13123 TT |
1182 | char *bfd_get_alt_debug_link_info (bfd * abfd, |
1183 | bfd_size_type *buildid_len, | |
dc294be5 | 1184 | bfd_byte **buildid_out); |
95e34fb4 NC |
1185 | |
1186 | DESCRIPTION | |
1187 | Fetch the filename and BuildID value for any alternate debuginfo | |
1188 | associated with @var{abfd}. Return NULL if no such info found, | |
dc294be5 TT |
1189 | otherwise return filename and update @var{buildid_len} and |
1190 | @var{buildid_out}. The returned filename and build_id are | |
1191 | allocated with @code{malloc}; freeing them is the | |
1192 | responsibility of the caller. | |
95e34fb4 NC |
1193 | */ |
1194 | ||
1195 | char * | |
acd13123 | 1196 | bfd_get_alt_debug_link_info (bfd * abfd, bfd_size_type *buildid_len, |
dc294be5 | 1197 | bfd_byte **buildid_out) |
95e34fb4 NC |
1198 | { |
1199 | asection *sect; | |
1200 | bfd_byte *contents; | |
1201 | int buildid_offset; | |
1202 | char *name; | |
1203 | ||
1204 | BFD_ASSERT (abfd); | |
dc294be5 | 1205 | BFD_ASSERT (buildid_len); |
95e34fb4 NC |
1206 | BFD_ASSERT (buildid_out); |
1207 | ||
1208 | sect = bfd_get_section_by_name (abfd, GNU_DEBUGALTLINK); | |
1209 | ||
1210 | if (sect == NULL) | |
1211 | return NULL; | |
1212 | ||
1213 | if (!bfd_malloc_and_get_section (abfd, sect, & contents)) | |
1214 | { | |
1215 | if (contents != NULL) | |
1216 | free (contents); | |
1217 | return NULL; | |
1218 | } | |
1219 | ||
dc294be5 | 1220 | /* BuildID value is stored after the filename. */ |
95e34fb4 NC |
1221 | name = (char *) contents; |
1222 | buildid_offset = strlen (name) + 1; | |
95e34fb4 | 1223 | |
dc294be5 TT |
1224 | *buildid_len = bfd_get_section_size (sect) - buildid_offset; |
1225 | *buildid_out = bfd_malloc (*buildid_len); | |
1226 | memcpy (*buildid_out, contents + buildid_offset, *buildid_len); | |
95e34fb4 NC |
1227 | |
1228 | return name; | |
1229 | } | |
1230 | ||
31f7ba04 NC |
1231 | /* |
1232 | INTERNAL_FUNCTION | |
1233 | separate_debug_file_exists | |
1234 | ||
1235 | SYNOPSIS | |
c58b9523 AM |
1236 | bfd_boolean separate_debug_file_exists |
1237 | (char *name, unsigned long crc32); | |
31f7ba04 NC |
1238 | |
1239 | DESCRIPTION | |
1240 | Checks to see if @var{name} is a file and if its contents | |
1241 | match @var{crc32}. | |
1242 | */ | |
1243 | ||
1244 | static bfd_boolean | |
c58b9523 | 1245 | separate_debug_file_exists (const char *name, const unsigned long crc) |
31f7ba04 | 1246 | { |
f075ee0c | 1247 | static unsigned char buffer [8 * 1024]; |
31f7ba04 | 1248 | unsigned long file_crc = 0; |
fed590bb | 1249 | FILE *f; |
2593f09a | 1250 | bfd_size_type count; |
31f7ba04 NC |
1251 | |
1252 | BFD_ASSERT (name); | |
1253 | ||
fed590bb AM |
1254 | f = real_fopen (name, FOPEN_RB); |
1255 | if (f == NULL) | |
31f7ba04 NC |
1256 | return FALSE; |
1257 | ||
fed590bb | 1258 | while ((count = fread (buffer, 1, sizeof (buffer), f)) > 0) |
2593f09a | 1259 | file_crc = bfd_calc_gnu_debuglink_crc32 (file_crc, buffer, count); |
31f7ba04 | 1260 | |
fed590bb | 1261 | fclose (f); |
31f7ba04 NC |
1262 | |
1263 | return crc == file_crc; | |
1264 | } | |
1265 | ||
95e34fb4 NC |
1266 | /* |
1267 | INTERNAL_FUNCTION | |
1268 | separate_alt_debug_file_exists | |
1269 | ||
1270 | SYNOPSIS | |
1271 | bfd_boolean separate_alt_debug_file_exists | |
1272 | (char *name, unsigned long crc32); | |
1273 | ||
1274 | DESCRIPTION | |
1275 | Checks to see if @var{name} is a file and if its BuildID | |
1276 | matches @var{buildid}. | |
1277 | */ | |
1278 | ||
1279 | static bfd_boolean | |
1280 | separate_alt_debug_file_exists (const char *name, | |
1281 | const unsigned long buildid ATTRIBUTE_UNUSED) | |
1282 | { | |
1283 | FILE *f; | |
1284 | ||
1285 | BFD_ASSERT (name); | |
1286 | ||
1287 | f = real_fopen (name, FOPEN_RB); | |
1288 | if (f == NULL) | |
1289 | return FALSE; | |
1290 | ||
1291 | /* FIXME: Add code to check buildid. */ | |
1292 | ||
1293 | fclose (f); | |
1294 | ||
1295 | return TRUE; | |
1296 | } | |
31f7ba04 NC |
1297 | |
1298 | /* | |
1299 | INTERNAL_FUNCTION | |
1300 | find_separate_debug_file | |
1301 | ||
1302 | SYNOPSIS | |
c58b9523 | 1303 | char *find_separate_debug_file (bfd *abfd); |
31f7ba04 NC |
1304 | |
1305 | DESCRIPTION | |
95e34fb4 NC |
1306 | Searches @var{abfd} for a section called @var{section_name} which |
1307 | is expected to contain a reference to a file containing separate | |
1308 | debugging information. The function scans various locations in | |
1309 | the filesystem, including the file tree rooted at | |
1310 | @var{debug_file_directory}, and returns the first matching | |
1311 | filename that it finds. If @var{check_crc} is TRUE then the | |
1312 | contents of the file must also match the CRC value contained in | |
1313 | @var{section_name}. Returns NULL if no valid file could be found. | |
31f7ba04 NC |
1314 | */ |
1315 | ||
95e34fb4 NC |
1316 | typedef char * (* get_func_type) (bfd *, unsigned long *); |
1317 | typedef bfd_boolean (* check_func_type) (const char *, const unsigned long); | |
1318 | ||
31f7ba04 | 1319 | static char * |
95e34fb4 NC |
1320 | find_separate_debug_file (bfd * abfd, |
1321 | const char * debug_file_directory, | |
1322 | get_func_type get_func, | |
1323 | check_func_type check_func) | |
31f7ba04 | 1324 | { |
91d6fa6a | 1325 | char *base; |
31f7ba04 NC |
1326 | char *dir; |
1327 | char *debugfile; | |
91910cdd | 1328 | char *canon_dir; |
31f7ba04 | 1329 | unsigned long crc32; |
3ea6b9a5 | 1330 | size_t dirlen; |
91910cdd | 1331 | size_t canon_dirlen; |
31f7ba04 NC |
1332 | |
1333 | BFD_ASSERT (abfd); | |
1334 | if (debug_file_directory == NULL) | |
1335 | debug_file_directory = "."; | |
1336 | ||
1337 | /* BFD may have been opened from a stream. */ | |
3ea6b9a5 AM |
1338 | if (abfd->filename == NULL) |
1339 | { | |
1340 | bfd_set_error (bfd_error_invalid_operation); | |
1341 | return NULL; | |
1342 | } | |
31f7ba04 | 1343 | |
95e34fb4 NC |
1344 | base = get_func (abfd, & crc32); |
1345 | ||
91d6fa6a | 1346 | if (base == NULL) |
31f7ba04 | 1347 | return NULL; |
2593f09a | 1348 | |
91d6fa6a | 1349 | if (base[0] == '\0') |
5ed6aba4 | 1350 | { |
91d6fa6a | 1351 | free (base); |
3ea6b9a5 | 1352 | bfd_set_error (bfd_error_no_debug_section); |
5ed6aba4 NC |
1353 | return NULL; |
1354 | } | |
31f7ba04 | 1355 | |
3ea6b9a5 AM |
1356 | for (dirlen = strlen (abfd->filename); dirlen > 0; dirlen--) |
1357 | if (IS_DIR_SEPARATOR (abfd->filename[dirlen - 1])) | |
1358 | break; | |
1359 | ||
a50b1753 | 1360 | dir = (char *) bfd_malloc (dirlen + 1); |
2593f09a NC |
1361 | if (dir == NULL) |
1362 | { | |
91d6fa6a | 1363 | free (base); |
2593f09a NC |
1364 | return NULL; |
1365 | } | |
3ea6b9a5 AM |
1366 | memcpy (dir, abfd->filename, dirlen); |
1367 | dir[dirlen] = '\0'; | |
1368 | ||
91910cdd AS |
1369 | /* Compute the canonical name of the bfd object with all symbolic links |
1370 | resolved, for use in the global debugfile directory. */ | |
1371 | canon_dir = lrealpath (abfd->filename); | |
1372 | for (canon_dirlen = strlen (canon_dir); canon_dirlen > 0; canon_dirlen--) | |
1373 | if (IS_DIR_SEPARATOR (canon_dir[canon_dirlen - 1])) | |
1374 | break; | |
1375 | canon_dir[canon_dirlen] = '\0'; | |
1376 | ||
a50b1753 NC |
1377 | debugfile = (char *) |
1378 | bfd_malloc (strlen (debug_file_directory) + 1 | |
1379 | + (canon_dirlen > dirlen ? canon_dirlen : dirlen) | |
1380 | + strlen (".debug/") | |
91d6fa6a | 1381 | + strlen (base) |
a50b1753 | 1382 | + 1); |
2593f09a | 1383 | if (debugfile == NULL) |
95e34fb4 | 1384 | goto found; /* Actually this returns NULL. */ |
31f7ba04 NC |
1385 | |
1386 | /* First try in the same directory as the original file: */ | |
1387 | strcpy (debugfile, dir); | |
91d6fa6a | 1388 | strcat (debugfile, base); |
31f7ba04 | 1389 | |
95e34fb4 NC |
1390 | if (check_func (debugfile, crc32)) |
1391 | goto found; | |
31f7ba04 NC |
1392 | |
1393 | /* Then try in a subdirectory called .debug. */ | |
1394 | strcpy (debugfile, dir); | |
1395 | strcat (debugfile, ".debug/"); | |
91d6fa6a | 1396 | strcat (debugfile, base); |
31f7ba04 | 1397 | |
95e34fb4 NC |
1398 | if (check_func (debugfile, crc32)) |
1399 | goto found; | |
31f7ba04 NC |
1400 | |
1401 | /* Then try in the global debugfile directory. */ | |
1402 | strcpy (debugfile, debug_file_directory); | |
91910cdd AS |
1403 | dirlen = strlen (debug_file_directory) - 1; |
1404 | if (dirlen > 0 | |
1405 | && debug_file_directory[dirlen] != '/' | |
1406 | && canon_dir[0] != '/') | |
31f7ba04 | 1407 | strcat (debugfile, "/"); |
91910cdd | 1408 | strcat (debugfile, canon_dir); |
91d6fa6a | 1409 | strcat (debugfile, base); |
31f7ba04 | 1410 | |
95e34fb4 NC |
1411 | if (check_func (debugfile, crc32)) |
1412 | goto found; | |
31f7ba04 | 1413 | |
95e34fb4 | 1414 | /* Failed to find the file. */ |
31f7ba04 | 1415 | free (debugfile); |
95e34fb4 NC |
1416 | debugfile = NULL; |
1417 | ||
1418 | found: | |
91d6fa6a | 1419 | free (base); |
31f7ba04 | 1420 | free (dir); |
91910cdd | 1421 | free (canon_dir); |
95e34fb4 | 1422 | return debugfile; |
31f7ba04 NC |
1423 | } |
1424 | ||
1425 | ||
1426 | /* | |
1427 | FUNCTION | |
1428 | bfd_follow_gnu_debuglink | |
1429 | ||
1430 | SYNOPSIS | |
c58b9523 | 1431 | char *bfd_follow_gnu_debuglink (bfd *abfd, const char *dir); |
31f7ba04 NC |
1432 | |
1433 | DESCRIPTION | |
1434 | ||
1435 | Takes a BFD and searches it for a .gnu_debuglink section. If this | |
28d39d1a NC |
1436 | section is found, it examines the section for the name and checksum |
1437 | of a '.debug' file containing auxiliary debugging information. It | |
1438 | then searches the filesystem for this .debug file in some standard | |
31f7ba04 | 1439 | locations, including the directory tree rooted at @var{dir}, and if |
28d39d1a NC |
1440 | found returns the full filename. |
1441 | ||
1442 | If @var{dir} is NULL, it will search a default path configured into | |
1443 | libbfd at build time. [XXX this feature is not currently | |
1444 | implemented]. | |
31f7ba04 NC |
1445 | |
1446 | RETURNS | |
1447 | <<NULL>> on any errors or failure to locate the .debug file, | |
1448 | otherwise a pointer to a heap-allocated string containing the | |
28d39d1a | 1449 | filename. The caller is responsible for freeing this string. |
31f7ba04 NC |
1450 | */ |
1451 | ||
1452 | char * | |
c58b9523 | 1453 | bfd_follow_gnu_debuglink (bfd *abfd, const char *dir) |
31f7ba04 | 1454 | { |
95e34fb4 NC |
1455 | return find_separate_debug_file (abfd, dir, |
1456 | bfd_get_debug_link_info, | |
1457 | separate_debug_file_exists); | |
1458 | } | |
1459 | ||
dc294be5 TT |
1460 | /* Helper for bfd_follow_gnu_debugaltlink. It just pretends to return |
1461 | a CRC. .gnu_debugaltlink supplies a build-id, which is different, | |
1462 | but this is ok because separate_alt_debug_file_exists ignores the | |
1463 | CRC anyway. */ | |
1464 | ||
1465 | static char * | |
1466 | get_alt_debug_link_info_shim (bfd * abfd, unsigned long *crc32_out) | |
1467 | { | |
6e114b15 | 1468 | bfd_size_type len; |
dc294be5 TT |
1469 | bfd_byte *buildid = NULL; |
1470 | char *result = bfd_get_alt_debug_link_info (abfd, &len, &buildid); | |
1471 | ||
1472 | *crc32_out = 0; | |
1473 | free (buildid); | |
1474 | ||
1475 | return result; | |
1476 | } | |
1477 | ||
95e34fb4 NC |
1478 | /* |
1479 | FUNCTION | |
1480 | bfd_follow_gnu_debugaltlink | |
1481 | ||
1482 | SYNOPSIS | |
1483 | char *bfd_follow_gnu_debugaltlink (bfd *abfd, const char *dir); | |
1484 | ||
1485 | DESCRIPTION | |
1486 | ||
1487 | Takes a BFD and searches it for a .gnu_debugaltlink section. If this | |
1488 | section is found, it examines the section for the name of a file | |
1489 | containing auxiliary debugging information. It then searches the | |
1490 | filesystem for this file in a set of standard locations, including | |
1491 | the directory tree rooted at @var{dir}, and if found returns the | |
1492 | full filename. | |
1493 | ||
1494 | If @var{dir} is NULL, it will search a default path configured into | |
1495 | libbfd at build time. [FIXME: This feature is not currently | |
1496 | implemented]. | |
1497 | ||
1498 | RETURNS | |
1499 | <<NULL>> on any errors or failure to locate the debug file, | |
1500 | otherwise a pointer to a heap-allocated string containing the | |
1501 | filename. The caller is responsible for freeing this string. | |
1502 | */ | |
1503 | ||
1504 | char * | |
1505 | bfd_follow_gnu_debugaltlink (bfd *abfd, const char *dir) | |
1506 | { | |
1507 | return find_separate_debug_file (abfd, dir, | |
dc294be5 | 1508 | get_alt_debug_link_info_shim, |
95e34fb4 | 1509 | separate_alt_debug_file_exists); |
31f7ba04 | 1510 | } |
2593f09a NC |
1511 | |
1512 | /* | |
1513 | FUNCTION | |
e7c81c25 | 1514 | bfd_create_gnu_debuglink_section |
2593f09a NC |
1515 | |
1516 | SYNOPSIS | |
198beae2 | 1517 | struct bfd_section *bfd_create_gnu_debuglink_section |
c58b9523 | 1518 | (bfd *abfd, const char *filename); |
2593f09a NC |
1519 | |
1520 | DESCRIPTION | |
1521 | ||
e7c81c25 NC |
1522 | Takes a @var{BFD} and adds a .gnu_debuglink section to it. The section is sized |
1523 | to be big enough to contain a link to the specified @var{filename}. | |
1524 | ||
1525 | RETURNS | |
1526 | A pointer to the new section is returned if all is ok. Otherwise <<NULL>> is | |
f12123c0 | 1527 | returned and bfd_error is set. |
e7c81c25 NC |
1528 | */ |
1529 | ||
1530 | asection * | |
c58b9523 | 1531 | bfd_create_gnu_debuglink_section (bfd *abfd, const char *filename) |
e7c81c25 | 1532 | { |
c58b9523 AM |
1533 | asection *sect; |
1534 | bfd_size_type debuglink_size; | |
117ed4f8 | 1535 | flagword flags; |
e7c81c25 NC |
1536 | |
1537 | if (abfd == NULL || filename == NULL) | |
1538 | { | |
1539 | bfd_set_error (bfd_error_invalid_operation); | |
1540 | return NULL; | |
1541 | } | |
1542 | ||
1543 | /* Strip off any path components in filename. */ | |
1544 | filename = lbasename (filename); | |
f12123c0 | 1545 | |
e7c81c25 NC |
1546 | sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK); |
1547 | if (sect) | |
1548 | { | |
1549 | /* Section already exists. */ | |
1550 | bfd_set_error (bfd_error_invalid_operation); | |
1551 | return NULL; | |
1552 | } | |
1553 | ||
117ed4f8 AM |
1554 | flags = SEC_HAS_CONTENTS | SEC_READONLY | SEC_DEBUGGING; |
1555 | sect = bfd_make_section_with_flags (abfd, GNU_DEBUGLINK, flags); | |
e7c81c25 NC |
1556 | if (sect == NULL) |
1557 | return NULL; | |
1558 | ||
e7c81c25 NC |
1559 | debuglink_size = strlen (filename) + 1; |
1560 | debuglink_size += 3; | |
1561 | debuglink_size &= ~3; | |
1562 | debuglink_size += 4; | |
1563 | ||
1564 | if (! bfd_set_section_size (abfd, sect, debuglink_size)) | |
1565 | /* XXX Should we delete the section from the bfd ? */ | |
1566 | return NULL; | |
f12123c0 | 1567 | |
e7c81c25 NC |
1568 | return sect; |
1569 | } | |
1570 | ||
1571 | ||
1572 | /* | |
1573 | FUNCTION | |
1574 | bfd_fill_in_gnu_debuglink_section | |
1575 | ||
1576 | SYNOPSIS | |
c58b9523 | 1577 | bfd_boolean bfd_fill_in_gnu_debuglink_section |
198beae2 | 1578 | (bfd *abfd, struct bfd_section *sect, const char *filename); |
e7c81c25 NC |
1579 | |
1580 | DESCRIPTION | |
1581 | ||
1582 | Takes a @var{BFD} and containing a .gnu_debuglink section @var{SECT} | |
1583 | and fills in the contents of the section to contain a link to the | |
1584 | specified @var{filename}. The filename should be relative to the | |
1585 | current directory. | |
2593f09a NC |
1586 | |
1587 | RETURNS | |
1588 | <<TRUE>> is returned if all is ok. Otherwise <<FALSE>> is returned | |
f12123c0 | 1589 | and bfd_error is set. |
2593f09a NC |
1590 | */ |
1591 | ||
1592 | bfd_boolean | |
c58b9523 | 1593 | bfd_fill_in_gnu_debuglink_section (bfd *abfd, |
198beae2 | 1594 | struct bfd_section *sect, |
c58b9523 | 1595 | const char *filename) |
2593f09a | 1596 | { |
2593f09a NC |
1597 | bfd_size_type debuglink_size; |
1598 | unsigned long crc32; | |
1599 | char * contents; | |
1600 | bfd_size_type crc_offset; | |
1601 | FILE * handle; | |
f075ee0c | 1602 | static unsigned char buffer[8 * 1024]; |
2593f09a | 1603 | size_t count; |
3ea6b9a5 | 1604 | size_t filelen; |
2593f09a | 1605 | |
e7c81c25 | 1606 | if (abfd == NULL || sect == NULL || filename == NULL) |
2593f09a NC |
1607 | { |
1608 | bfd_set_error (bfd_error_invalid_operation); | |
1609 | return FALSE; | |
1610 | } | |
1611 | ||
1612 | /* Make sure that we can read the file. | |
1613 | XXX - Should we attempt to locate the debug info file using the same | |
1614 | algorithm as gdb ? At the moment, since we are creating the | |
1615 | .gnu_debuglink section, we insist upon the user providing us with a | |
1616 | correct-for-section-creation-time path, but this need not conform to | |
1617 | the gdb location algorithm. */ | |
2e6f4fae | 1618 | handle = real_fopen (filename, FOPEN_RB); |
2593f09a NC |
1619 | if (handle == NULL) |
1620 | { | |
1621 | bfd_set_error (bfd_error_system_call); | |
1622 | return FALSE; | |
1623 | } | |
1624 | ||
1625 | crc32 = 0; | |
1626 | while ((count = fread (buffer, 1, sizeof buffer, handle)) > 0) | |
1627 | crc32 = bfd_calc_gnu_debuglink_crc32 (crc32, buffer, count); | |
1628 | fclose (handle); | |
1629 | ||
1630 | /* Strip off any path components in filename, | |
1631 | now that we no longer need them. */ | |
1632 | filename = lbasename (filename); | |
f12123c0 | 1633 | |
3ea6b9a5 AM |
1634 | filelen = strlen (filename); |
1635 | debuglink_size = filelen + 1; | |
2593f09a NC |
1636 | debuglink_size += 3; |
1637 | debuglink_size &= ~3; | |
1638 | debuglink_size += 4; | |
1639 | ||
a50b1753 | 1640 | contents = (char *) bfd_malloc (debuglink_size); |
2593f09a NC |
1641 | if (contents == NULL) |
1642 | { | |
1643 | /* XXX Should we delete the section from the bfd ? */ | |
2593f09a NC |
1644 | return FALSE; |
1645 | } | |
1646 | ||
2593f09a | 1647 | crc_offset = debuglink_size - 4; |
3ea6b9a5 AM |
1648 | memcpy (contents, filename, filelen); |
1649 | memset (contents + filelen, 0, crc_offset - filelen); | |
2593f09a | 1650 | |
c58b9523 | 1651 | bfd_put_32 (abfd, crc32, contents + crc_offset); |
2593f09a | 1652 | |
c58b9523 | 1653 | if (! bfd_set_section_contents (abfd, sect, contents, 0, debuglink_size)) |
2593f09a NC |
1654 | { |
1655 | /* XXX Should we delete the section from the bfd ? */ | |
1656 | free (contents); | |
1657 | return FALSE; | |
1658 | } | |
1659 | ||
1660 | return TRUE; | |
1661 | } |