Commit | Line | Data |
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252b5132 | 1 | /* Generic BFD library interface and support routines. |
7898deda | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
c067354b | 3 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | Written by Cygnus Support. | |
6 | ||
3af9a47b | 7 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 8 | |
3af9a47b NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
3af9a47b | 12 | (at your option) any later version. |
252b5132 | 13 | |
3af9a47b NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
252b5132 | 18 | |
3af9a47b NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
22 | MA 02110-1301, USA. */ | |
252b5132 RH |
23 | |
24 | /* | |
25 | SECTION | |
26 | <<typedef bfd>> | |
27 | ||
28 | A BFD has type <<bfd>>; objects of this type are the | |
29 | cornerstone of any application using BFD. Using BFD | |
30 | consists of making references though the BFD and to data in the BFD. | |
31 | ||
32 | Here is the structure that defines the type <<bfd>>. It | |
33 | contains the major data about the file and pointers | |
34 | to the rest of the data. | |
35 | ||
36 | CODE_FRAGMENT | |
37 | . | |
a50b1753 NC |
38 | .enum bfd_direction |
39 | . { | |
40 | . no_direction = 0, | |
41 | . read_direction = 1, | |
42 | . write_direction = 2, | |
43 | . both_direction = 3 | |
44 | . }; | |
45 | . | |
c2852e88 | 46 | .struct bfd |
252b5132 | 47 | .{ |
52b69c9e AO |
48 | . {* A unique identifier of the BFD *} |
49 | . unsigned int id; | |
50 | . | |
b5f79c76 NC |
51 | . {* The filename the application opened the BFD with. *} |
52 | . const char *filename; | |
252b5132 | 53 | . |
b5f79c76 NC |
54 | . {* A pointer to the target jump table. *} |
55 | . const struct bfd_target *xvec; | |
252b5132 | 56 | . |
40838a72 AC |
57 | . {* The IOSTREAM, and corresponding IO vector that provide access |
58 | . to the file backing the BFD. *} | |
c58b9523 | 59 | . void *iostream; |
40838a72 | 60 | . const struct bfd_iovec *iovec; |
b5f79c76 | 61 | . |
b5f79c76 NC |
62 | . {* The caching routines use these to maintain a |
63 | . least-recently-used list of BFDs. *} | |
2ce40c65 | 64 | . struct bfd *lru_prev, *lru_next; |
b5f79c76 NC |
65 | . |
66 | . {* When a file is closed by the caching routines, BFD retains | |
67 | . state information on the file here... *} | |
68 | . ufile_ptr where; | |
69 | . | |
b34976b6 | 70 | . {* File modified time, if mtime_set is TRUE. *} |
b5f79c76 NC |
71 | . long mtime; |
72 | . | |
73 | . {* Reserved for an unimplemented file locking extension. *} | |
74 | . int ifd; | |
75 | . | |
76 | . {* The format which belongs to the BFD. (object, core, etc.) *} | |
77 | . bfd_format format; | |
78 | . | |
79 | . {* The direction with which the BFD was opened. *} | |
a50b1753 | 80 | . enum bfd_direction direction; |
b5f79c76 NC |
81 | . |
82 | . {* Format_specific flags. *} | |
83 | . flagword flags; | |
84 | . | |
6ad2759d L |
85 | . {* Values that may appear in the flags field of a BFD. These also |
86 | . appear in the object_flags field of the bfd_target structure, where | |
87 | . they indicate the set of flags used by that backend (not all flags | |
88 | . are meaningful for all object file formats) (FIXME: at the moment, | |
89 | . the object_flags values have mostly just been copied from backend | |
90 | . to another, and are not necessarily correct). *} | |
91 | . | |
92 | .#define BFD_NO_FLAGS 0x00 | |
93 | . | |
94 | . {* BFD contains relocation entries. *} | |
95 | .#define HAS_RELOC 0x01 | |
96 | . | |
97 | . {* BFD is directly executable. *} | |
98 | .#define EXEC_P 0x02 | |
99 | . | |
100 | . {* BFD has line number information (basically used for F_LNNO in a | |
101 | . COFF header). *} | |
102 | .#define HAS_LINENO 0x04 | |
103 | . | |
104 | . {* BFD has debugging information. *} | |
105 | .#define HAS_DEBUG 0x08 | |
106 | . | |
107 | . {* BFD has symbols. *} | |
108 | .#define HAS_SYMS 0x10 | |
109 | . | |
110 | . {* BFD has local symbols (basically used for F_LSYMS in a COFF | |
111 | . header). *} | |
112 | .#define HAS_LOCALS 0x20 | |
113 | . | |
114 | . {* BFD is a dynamic object. *} | |
115 | .#define DYNAMIC 0x40 | |
116 | . | |
117 | . {* Text section is write protected (if D_PAGED is not set, this is | |
118 | . like an a.out NMAGIC file) (the linker sets this by default, but | |
119 | . clears it for -r or -N). *} | |
120 | .#define WP_TEXT 0x80 | |
121 | . | |
122 | . {* BFD is dynamically paged (this is like an a.out ZMAGIC file) (the | |
123 | . linker sets this by default, but clears it for -r or -n or -N). *} | |
124 | .#define D_PAGED 0x100 | |
125 | . | |
126 | . {* BFD is relaxable (this means that bfd_relax_section may be able to | |
127 | . do something) (sometimes bfd_relax_section can do something even if | |
128 | . this is not set). *} | |
129 | .#define BFD_IS_RELAXABLE 0x200 | |
130 | . | |
131 | . {* This may be set before writing out a BFD to request using a | |
132 | . traditional format. For example, this is used to request that when | |
133 | . writing out an a.out object the symbols not be hashed to eliminate | |
134 | . duplicates. *} | |
135 | .#define BFD_TRADITIONAL_FORMAT 0x400 | |
136 | . | |
137 | . {* This flag indicates that the BFD contents are actually cached | |
138 | . in memory. If this is set, iostream points to a bfd_in_memory | |
139 | . struct. *} | |
140 | .#define BFD_IN_MEMORY 0x800 | |
141 | . | |
142 | . {* The sections in this BFD specify a memory page. *} | |
143 | .#define HAS_LOAD_PAGE 0x1000 | |
144 | . | |
145 | . {* This BFD has been created by the linker and doesn't correspond | |
146 | . to any input file. *} | |
147 | .#define BFD_LINKER_CREATED 0x2000 | |
148 | . | |
36e4dce6 CD |
149 | . {* This may be set before writing out a BFD to request that it |
150 | . be written using values for UIDs, GIDs, timestamps, etc. that | |
151 | . will be consistent from run to run. *} | |
152 | .#define BFD_DETERMINISTIC_OUTPUT 0x4000 | |
153 | . | |
b5f79c76 NC |
154 | . {* Currently my_archive is tested before adding origin to |
155 | . anything. I believe that this can become always an add of | |
156 | . origin, with origin set to 0 for non archive files. *} | |
157 | . ufile_ptr origin; | |
158 | . | |
a8da6403 NC |
159 | . {* The origin in the archive of the proxy entry. This will |
160 | . normally be the same as origin, except for thin archives, | |
161 | . when it will contain the current offset of the proxy in the | |
162 | . thin archive rather than the offset of the bfd in its actual | |
163 | . container. *} | |
164 | . ufile_ptr proxy_origin; | |
165 | . | |
b5f79c76 NC |
166 | . {* A hash table for section names. *} |
167 | . struct bfd_hash_table section_htab; | |
168 | . | |
169 | . {* Pointer to linked list of sections. *} | |
198beae2 | 170 | . struct bfd_section *sections; |
b5f79c76 | 171 | . |
5daa8fe7 L |
172 | . {* The last section on the section list. *} |
173 | . struct bfd_section *section_last; | |
b5f79c76 NC |
174 | . |
175 | . {* The number of sections. *} | |
176 | . unsigned int section_count; | |
177 | . | |
178 | . {* Stuff only useful for object files: | |
179 | . The start address. *} | |
180 | . bfd_vma start_address; | |
181 | . | |
182 | . {* Used for input and output. *} | |
183 | . unsigned int symcount; | |
184 | . | |
5c1d2f5f AM |
185 | . {* Symbol table for output BFD (with symcount entries). |
186 | . Also used by the linker to cache input BFD symbols. *} | |
fc0a2244 | 187 | . struct bfd_symbol **outsymbols; |
b5f79c76 | 188 | . |
1f70368c DJ |
189 | . {* Used for slurped dynamic symbol tables. *} |
190 | . unsigned int dynsymcount; | |
191 | . | |
b5f79c76 NC |
192 | . {* Pointer to structure which contains architecture information. *} |
193 | . const struct bfd_arch_info *arch_info; | |
194 | . | |
195 | . {* Stuff only useful for archives. *} | |
c58b9523 | 196 | . void *arelt_data; |
2ce40c65 | 197 | . struct bfd *my_archive; {* The containing archive BFD. *} |
cc481421 | 198 | . struct bfd *archive_next; {* The next BFD in the archive. *} |
2ce40c65 | 199 | . struct bfd *archive_head; {* The first BFD in the archive. *} |
a8da6403 NC |
200 | . struct bfd *nested_archives; {* List of nested archive in a flattened |
201 | . thin archive. *} | |
252b5132 | 202 | . |
b5f79c76 | 203 | . {* A chain of BFD structures involved in a link. *} |
2ce40c65 | 204 | . struct bfd *link_next; |
b5f79c76 NC |
205 | . |
206 | . {* A field used by _bfd_generic_link_add_archive_symbols. This will | |
207 | . be used only for archive elements. *} | |
208 | . int archive_pass; | |
209 | . | |
210 | . {* Used by the back end to hold private data. *} | |
211 | . union | |
212 | . { | |
252b5132 RH |
213 | . struct aout_data_struct *aout_data; |
214 | . struct artdata *aout_ar_data; | |
215 | . struct _oasys_data *oasys_obj_data; | |
216 | . struct _oasys_ar_data *oasys_ar_data; | |
217 | . struct coff_tdata *coff_obj_data; | |
218 | . struct pe_tdata *pe_obj_data; | |
219 | . struct xcoff_tdata *xcoff_obj_data; | |
220 | . struct ecoff_tdata *ecoff_obj_data; | |
221 | . struct ieee_data_struct *ieee_data; | |
222 | . struct ieee_ar_data_struct *ieee_ar_data; | |
223 | . struct srec_data_struct *srec_data; | |
c067354b | 224 | . struct verilog_data_struct *verilog_data; |
252b5132 RH |
225 | . struct ihex_data_struct *ihex_data; |
226 | . struct tekhex_data_struct *tekhex_data; | |
227 | . struct elf_obj_tdata *elf_obj_data; | |
228 | . struct nlm_obj_tdata *nlm_obj_data; | |
229 | . struct bout_data_struct *bout_data; | |
3c3bdf30 | 230 | . struct mmo_data_struct *mmo_data; |
252b5132 RH |
231 | . struct sun_core_struct *sun_core_data; |
232 | . struct sco5_core_struct *sco5_core_data; | |
233 | . struct trad_core_struct *trad_core_data; | |
234 | . struct som_data_struct *som_data; | |
235 | . struct hpux_core_struct *hpux_core_data; | |
236 | . struct hppabsd_core_struct *hppabsd_core_data; | |
237 | . struct sgi_core_struct *sgi_core_data; | |
238 | . struct lynx_core_struct *lynx_core_data; | |
239 | . struct osf_core_struct *osf_core_data; | |
240 | . struct cisco_core_struct *cisco_core_data; | |
241 | . struct versados_data_struct *versados_data; | |
242 | . struct netbsd_core_struct *netbsd_core_data; | |
3af9a47b NC |
243 | . struct mach_o_data_struct *mach_o_data; |
244 | . struct mach_o_fat_data_struct *mach_o_fat_data; | |
ce3c775b | 245 | . struct plugin_data_struct *plugin_data; |
3af9a47b NC |
246 | . struct bfd_pef_data_struct *pef_data; |
247 | . struct bfd_pef_xlib_data_struct *pef_xlib_data; | |
248 | . struct bfd_sym_data_struct *sym_data; | |
c58b9523 | 249 | . void *any; |
b5f79c76 NC |
250 | . } |
251 | . tdata; | |
aebad5fe | 252 | . |
b5f79c76 | 253 | . {* Used by the application to hold private data. *} |
c58b9523 | 254 | . void *usrdata; |
252b5132 RH |
255 | . |
256 | . {* Where all the allocated stuff under this BFD goes. This is a | |
c58b9523 AM |
257 | . struct objalloc *, but we use void * to avoid requiring the inclusion |
258 | . of objalloc.h. *} | |
259 | . void *memory; | |
6ad2759d L |
260 | . |
261 | . {* Is the file descriptor being cached? That is, can it be closed as | |
262 | . needed, and re-opened when accessed later? *} | |
263 | . unsigned int cacheable : 1; | |
264 | . | |
265 | . {* Marks whether there was a default target specified when the | |
266 | . BFD was opened. This is used to select which matching algorithm | |
267 | . to use to choose the back end. *} | |
268 | . unsigned int target_defaulted : 1; | |
269 | . | |
270 | . {* ... and here: (``once'' means at least once). *} | |
271 | . unsigned int opened_once : 1; | |
272 | . | |
273 | . {* Set if we have a locally maintained mtime value, rather than | |
274 | . getting it from the file each time. *} | |
275 | . unsigned int mtime_set : 1; | |
276 | . | |
277 | . {* Flag set if symbols from this BFD should not be exported. *} | |
278 | . unsigned int no_export : 1; | |
279 | . | |
280 | . {* Remember when output has begun, to stop strange things | |
281 | . from happening. *} | |
282 | . unsigned int output_has_begun : 1; | |
283 | . | |
284 | . {* Have archive map. *} | |
285 | . unsigned int has_armap : 1; | |
a8da6403 NC |
286 | . |
287 | . {* Set if this is a thin archive. *} | |
288 | . unsigned int is_thin_archive : 1; | |
4b544b64 TG |
289 | . |
290 | . {* Set if only required symbols should be added in the link hash table for | |
291 | . this object. Used by VMS linkers. *} | |
292 | . unsigned int selective_search : 1; | |
252b5132 RH |
293 | .}; |
294 | . | |
295 | */ | |
296 | ||
252b5132 | 297 | #include "sysdep.h" |
252b5132 | 298 | #include <stdarg.h> |
3db64b00 AM |
299 | #include "bfd.h" |
300 | #include "bfdver.h" | |
252b5132 | 301 | #include "libiberty.h" |
3fad56a3 | 302 | #include "demangle.h" |
3882b010 | 303 | #include "safe-ctype.h" |
252b5132 RH |
304 | #include "bfdlink.h" |
305 | #include "libbfd.h" | |
306 | #include "coff/internal.h" | |
307 | #include "coff/sym.h" | |
308 | #include "libcoff.h" | |
309 | #include "libecoff.h" | |
310 | #undef obj_symbols | |
311 | #include "elf-bfd.h" | |
3168356f AM |
312 | |
313 | #ifndef EXIT_FAILURE | |
314 | #define EXIT_FAILURE 1 | |
315 | #endif | |
316 | ||
252b5132 RH |
317 | \f |
318 | /* provide storage for subsystem, stack and heap data which may have been | |
319 | passed in on the command line. Ld puts this data into a bfd_link_info | |
320 | struct which ultimately gets passed in to the bfd. When it arrives, copy | |
321 | it to the following struct so that the data will be available in coffcode.h | |
322 | where it is needed. The typedef's used are defined in bfd.h */ | |
252b5132 RH |
323 | \f |
324 | /* | |
325 | SECTION | |
326 | Error reporting | |
327 | ||
328 | Most BFD functions return nonzero on success (check their | |
329 | individual documentation for precise semantics). On an error, | |
330 | they call <<bfd_set_error>> to set an error condition that callers | |
331 | can check by calling <<bfd_get_error>>. | |
332 | If that returns <<bfd_error_system_call>>, then check | |
333 | <<errno>>. | |
334 | ||
335 | The easiest way to report a BFD error to the user is to | |
336 | use <<bfd_perror>>. | |
337 | ||
338 | SUBSECTION | |
339 | Type <<bfd_error_type>> | |
340 | ||
341 | The values returned by <<bfd_get_error>> are defined by the | |
342 | enumerated type <<bfd_error_type>>. | |
343 | ||
344 | CODE_FRAGMENT | |
345 | . | |
346 | .typedef enum bfd_error | |
347 | .{ | |
348 | . bfd_error_no_error = 0, | |
349 | . bfd_error_system_call, | |
350 | . bfd_error_invalid_target, | |
351 | . bfd_error_wrong_format, | |
3619ad04 | 352 | . bfd_error_wrong_object_format, |
252b5132 RH |
353 | . bfd_error_invalid_operation, |
354 | . bfd_error_no_memory, | |
355 | . bfd_error_no_symbols, | |
356 | . bfd_error_no_armap, | |
357 | . bfd_error_no_more_archived_files, | |
358 | . bfd_error_malformed_archive, | |
359 | . bfd_error_file_not_recognized, | |
360 | . bfd_error_file_ambiguously_recognized, | |
361 | . bfd_error_no_contents, | |
362 | . bfd_error_nonrepresentable_section, | |
363 | . bfd_error_no_debug_section, | |
364 | . bfd_error_bad_value, | |
365 | . bfd_error_file_truncated, | |
366 | . bfd_error_file_too_big, | |
ffda70fc | 367 | . bfd_error_on_input, |
252b5132 | 368 | . bfd_error_invalid_error_code |
b5f79c76 NC |
369 | .} |
370 | .bfd_error_type; | |
252b5132 RH |
371 | . |
372 | */ | |
373 | ||
374 | static bfd_error_type bfd_error = bfd_error_no_error; | |
ffda70fc AM |
375 | static bfd *input_bfd = NULL; |
376 | static bfd_error_type input_error = bfd_error_no_error; | |
252b5132 | 377 | |
55ab10f0 NC |
378 | const char *const bfd_errmsgs[] = |
379 | { | |
380 | N_("No error"), | |
381 | N_("System call error"), | |
382 | N_("Invalid bfd target"), | |
383 | N_("File in wrong format"), | |
3619ad04 | 384 | N_("Archive object file in wrong format"), |
55ab10f0 NC |
385 | N_("Invalid operation"), |
386 | N_("Memory exhausted"), | |
387 | N_("No symbols"), | |
388 | N_("Archive has no index; run ranlib to add one"), | |
389 | N_("No more archived files"), | |
390 | N_("Malformed archive"), | |
391 | N_("File format not recognized"), | |
392 | N_("File format is ambiguous"), | |
393 | N_("Section has no contents"), | |
394 | N_("Nonrepresentable section on output"), | |
395 | N_("Symbol needs debug section which does not exist"), | |
396 | N_("Bad value"), | |
397 | N_("File truncated"), | |
398 | N_("File too big"), | |
ffda70fc | 399 | N_("Error reading %s: %s"), |
55ab10f0 NC |
400 | N_("#<Invalid error code>") |
401 | }; | |
252b5132 RH |
402 | |
403 | /* | |
404 | FUNCTION | |
405 | bfd_get_error | |
406 | ||
407 | SYNOPSIS | |
408 | bfd_error_type bfd_get_error (void); | |
409 | ||
410 | DESCRIPTION | |
411 | Return the current BFD error condition. | |
412 | */ | |
413 | ||
414 | bfd_error_type | |
c58b9523 | 415 | bfd_get_error (void) |
252b5132 RH |
416 | { |
417 | return bfd_error; | |
418 | } | |
419 | ||
420 | /* | |
421 | FUNCTION | |
422 | bfd_set_error | |
423 | ||
424 | SYNOPSIS | |
ffda70fc | 425 | void bfd_set_error (bfd_error_type error_tag, ...); |
252b5132 RH |
426 | |
427 | DESCRIPTION | |
428 | Set the BFD error condition to be @var{error_tag}. | |
ffda70fc AM |
429 | If @var{error_tag} is bfd_error_on_input, then this function |
430 | takes two more parameters, the input bfd where the error | |
431 | occurred, and the bfd_error_type error. | |
252b5132 RH |
432 | */ |
433 | ||
434 | void | |
ffda70fc | 435 | bfd_set_error (bfd_error_type error_tag, ...) |
252b5132 RH |
436 | { |
437 | bfd_error = error_tag; | |
ffda70fc AM |
438 | if (error_tag == bfd_error_on_input) |
439 | { | |
440 | /* This is an error that occurred during bfd_close when | |
441 | writing an archive, but on one of the input files. */ | |
442 | va_list ap; | |
443 | ||
444 | va_start (ap, error_tag); | |
445 | input_bfd = va_arg (ap, bfd *); | |
a50b1753 | 446 | input_error = (bfd_error_type) va_arg (ap, int); |
ffda70fc AM |
447 | if (input_error >= bfd_error_on_input) |
448 | abort (); | |
449 | va_end (ap); | |
450 | } | |
252b5132 RH |
451 | } |
452 | ||
453 | /* | |
454 | FUNCTION | |
455 | bfd_errmsg | |
456 | ||
457 | SYNOPSIS | |
55ab10f0 | 458 | const char *bfd_errmsg (bfd_error_type error_tag); |
252b5132 RH |
459 | |
460 | DESCRIPTION | |
461 | Return a string describing the error @var{error_tag}, or | |
462 | the system error if @var{error_tag} is <<bfd_error_system_call>>. | |
463 | */ | |
464 | ||
55ab10f0 | 465 | const char * |
c58b9523 | 466 | bfd_errmsg (bfd_error_type error_tag) |
252b5132 RH |
467 | { |
468 | #ifndef errno | |
469 | extern int errno; | |
470 | #endif | |
ffda70fc AM |
471 | if (error_tag == bfd_error_on_input) |
472 | { | |
473 | char *buf; | |
474 | const char *msg = bfd_errmsg (input_error); | |
475 | ||
476 | if (asprintf (&buf, _(bfd_errmsgs [error_tag]), input_bfd->filename, msg) | |
477 | != -1) | |
478 | return buf; | |
479 | ||
480 | /* Ick, what to do on out of memory? */ | |
481 | return msg; | |
482 | } | |
483 | ||
252b5132 RH |
484 | if (error_tag == bfd_error_system_call) |
485 | return xstrerror (errno); | |
486 | ||
c58b9523 AM |
487 | if (error_tag > bfd_error_invalid_error_code) |
488 | error_tag = bfd_error_invalid_error_code; /* sanity check */ | |
252b5132 | 489 | |
c58b9523 | 490 | return _(bfd_errmsgs [error_tag]); |
252b5132 RH |
491 | } |
492 | ||
493 | /* | |
494 | FUNCTION | |
495 | bfd_perror | |
496 | ||
497 | SYNOPSIS | |
55ab10f0 | 498 | void bfd_perror (const char *message); |
252b5132 RH |
499 | |
500 | DESCRIPTION | |
501 | Print to the standard error stream a string describing the | |
502 | last BFD error that occurred, or the last system error if | |
503 | the last BFD error was a system call failure. If @var{message} | |
504 | is non-NULL and non-empty, the error string printed is preceded | |
505 | by @var{message}, a colon, and a space. It is followed by a newline. | |
506 | */ | |
507 | ||
508 | void | |
c58b9523 | 509 | bfd_perror (const char *message) |
252b5132 | 510 | { |
ffda70fc AM |
511 | if (message == NULL || *message == '\0') |
512 | fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ())); | |
55ab10f0 | 513 | else |
ffda70fc | 514 | fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ())); |
252b5132 RH |
515 | } |
516 | ||
517 | /* | |
518 | SUBSECTION | |
519 | BFD error handler | |
520 | ||
521 | Some BFD functions want to print messages describing the | |
522 | problem. They call a BFD error handler function. This | |
5c4491d3 | 523 | function may be overridden by the program. |
252b5132 RH |
524 | |
525 | The BFD error handler acts like printf. | |
526 | ||
527 | CODE_FRAGMENT | |
528 | . | |
c58b9523 | 529 | .typedef void (*bfd_error_handler_type) (const char *, ...); |
252b5132 RH |
530 | . |
531 | */ | |
532 | ||
533 | /* The program name used when printing BFD error messages. */ | |
534 | ||
535 | static const char *_bfd_error_program_name; | |
536 | ||
d003868e AM |
537 | /* This is the default routine to handle BFD error messages. |
538 | Like fprintf (stderr, ...), but also handles some extra format specifiers. | |
539 | ||
540 | %A section name from section. For group components, print group name too. | |
541 | %B file name from bfd. For archive components, prints archive too. | |
d07676f8 NC |
542 | |
543 | Note - because these two extra format specifiers require special handling | |
544 | they are scanned for and processed in this function, before calling | |
545 | vfprintf. This means that the *arguments* for these format specifiers | |
546 | must be the first ones in the variable argument list, regardless of where | |
547 | the specifiers appear in the format string. Thus for example calling | |
548 | this function with a format string of: | |
549 | ||
550 | "blah %s blah %A blah %d blah %B" | |
551 | ||
552 | would involve passing the arguments as: | |
553 | ||
554 | "blah %s blah %A blah %d blah %B", | |
555 | asection_for_the_%A, | |
556 | bfd_for_the_%B, | |
557 | string_for_the_%s, | |
558 | integer_for_the_%d); | |
d003868e | 559 | */ |
252b5132 | 560 | |
185d09ad | 561 | void |
d003868e | 562 | _bfd_default_error_handler (const char *fmt, ...) |
252b5132 | 563 | { |
d003868e AM |
564 | va_list ap; |
565 | char *bufp; | |
566 | const char *new_fmt, *p; | |
567 | size_t avail = 1000; | |
568 | char buf[1000]; | |
c58b9523 | 569 | |
0bc43230 AM |
570 | /* PR 4992: Don't interrupt output being sent to stdout. */ |
571 | fflush (stdout); | |
572 | ||
252b5132 RH |
573 | if (_bfd_error_program_name != NULL) |
574 | fprintf (stderr, "%s: ", _bfd_error_program_name); | |
575 | else | |
576 | fprintf (stderr, "BFD: "); | |
577 | ||
d003868e AM |
578 | va_start (ap, fmt); |
579 | new_fmt = fmt; | |
580 | bufp = buf; | |
581 | ||
582 | /* Reserve enough space for the existing format string. */ | |
583 | avail -= strlen (fmt) + 1; | |
584 | if (avail > 1000) | |
3168356f | 585 | _exit (EXIT_FAILURE); |
d003868e AM |
586 | |
587 | p = fmt; | |
3e540f25 | 588 | while (1) |
d003868e AM |
589 | { |
590 | char *q; | |
591 | size_t len, extra, trim; | |
592 | ||
593 | p = strchr (p, '%'); | |
594 | if (p == NULL || p[1] == '\0') | |
595 | { | |
596 | if (new_fmt == buf) | |
597 | { | |
598 | len = strlen (fmt); | |
599 | memcpy (bufp, fmt, len + 1); | |
600 | } | |
601 | break; | |
602 | } | |
603 | ||
604 | if (p[1] == 'A' || p[1] == 'B') | |
605 | { | |
606 | len = p - fmt; | |
607 | memcpy (bufp, fmt, len); | |
608 | bufp += len; | |
609 | fmt = p + 2; | |
610 | new_fmt = buf; | |
611 | ||
612 | /* If we run out of space, tough, you lose your ridiculously | |
613 | long file or section name. It's not safe to try to alloc | |
614 | memory here; We might be printing an out of memory message. */ | |
615 | if (avail == 0) | |
616 | { | |
617 | *bufp++ = '*'; | |
618 | *bufp++ = '*'; | |
619 | *bufp = '\0'; | |
620 | } | |
621 | else | |
622 | { | |
623 | if (p[1] == 'B') | |
624 | { | |
625 | bfd *abfd = va_arg (ap, bfd *); | |
d07676f8 NC |
626 | |
627 | if (abfd == NULL) | |
628 | /* Invoking %B with a null bfd pointer is an internal error. */ | |
629 | abort (); | |
630 | else if (abfd->my_archive) | |
d003868e AM |
631 | snprintf (bufp, avail, "%s(%s)", |
632 | abfd->my_archive->filename, abfd->filename); | |
633 | else | |
634 | snprintf (bufp, avail, "%s", abfd->filename); | |
635 | } | |
636 | else | |
637 | { | |
638 | asection *sec = va_arg (ap, asection *); | |
d07676f8 | 639 | bfd *abfd; |
d003868e AM |
640 | const char *group = NULL; |
641 | struct coff_comdat_info *ci; | |
642 | ||
d07676f8 NC |
643 | if (sec == NULL) |
644 | /* Invoking %A with a null section pointer is an internal error. */ | |
645 | abort (); | |
646 | abfd = sec->owner; | |
d003868e AM |
647 | if (abfd != NULL |
648 | && bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
649 | && elf_next_in_group (sec) != NULL | |
650 | && (sec->flags & SEC_GROUP) == 0) | |
651 | group = elf_group_name (sec); | |
652 | else if (abfd != NULL | |
653 | && bfd_get_flavour (abfd) == bfd_target_coff_flavour | |
654 | && (ci = bfd_coff_get_comdat_section (sec->owner, | |
655 | sec)) != NULL) | |
656 | group = ci->name; | |
657 | if (group != NULL) | |
658 | snprintf (bufp, avail, "%s[%s]", sec->name, group); | |
659 | else | |
660 | snprintf (bufp, avail, "%s", sec->name); | |
661 | } | |
662 | len = strlen (bufp); | |
663 | avail = avail - len + 2; | |
664 | ||
665 | /* We need to replace any '%' we printed by "%%". | |
666 | First count how many. */ | |
667 | q = bufp; | |
668 | bufp += len; | |
669 | extra = 0; | |
670 | while ((q = strchr (q, '%')) != NULL) | |
671 | { | |
672 | ++q; | |
673 | ++extra; | |
674 | } | |
675 | ||
676 | /* If there isn't room, trim off the end of the string. */ | |
677 | q = bufp; | |
678 | bufp += extra; | |
679 | if (extra > avail) | |
680 | { | |
681 | trim = extra - avail; | |
682 | bufp -= trim; | |
683 | do | |
684 | { | |
685 | if (*--q == '%') | |
686 | --extra; | |
687 | } | |
688 | while (--trim != 0); | |
689 | *q = '\0'; | |
45fc9e4a | 690 | avail = extra; |
d003868e | 691 | } |
45fc9e4a | 692 | avail -= extra; |
d003868e AM |
693 | |
694 | /* Now double all '%' chars, shuffling the string as we go. */ | |
695 | while (extra != 0) | |
696 | { | |
697 | while ((q[extra] = *q) != '%') | |
698 | --q; | |
699 | q[--extra] = '%'; | |
700 | --q; | |
701 | } | |
702 | } | |
703 | } | |
704 | p = p + 2; | |
705 | } | |
706 | ||
707 | vfprintf (stderr, new_fmt, ap); | |
708 | va_end (ap); | |
252b5132 | 709 | |
d003868e | 710 | putc ('\n', stderr); |
252b5132 RH |
711 | } |
712 | ||
252b5132 RH |
713 | /* This is a function pointer to the routine which should handle BFD |
714 | error messages. It is called when a BFD routine encounters an | |
715 | error for which it wants to print a message. Going through a | |
716 | function pointer permits a program linked against BFD to intercept | |
717 | the messages and deal with them itself. */ | |
718 | ||
719 | bfd_error_handler_type _bfd_error_handler = _bfd_default_error_handler; | |
720 | ||
721 | /* | |
722 | FUNCTION | |
723 | bfd_set_error_handler | |
724 | ||
725 | SYNOPSIS | |
726 | bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type); | |
727 | ||
728 | DESCRIPTION | |
729 | Set the BFD error handler function. Returns the previous | |
730 | function. | |
731 | */ | |
732 | ||
733 | bfd_error_handler_type | |
c58b9523 | 734 | bfd_set_error_handler (bfd_error_handler_type pnew) |
252b5132 RH |
735 | { |
736 | bfd_error_handler_type pold; | |
737 | ||
738 | pold = _bfd_error_handler; | |
739 | _bfd_error_handler = pnew; | |
740 | return pold; | |
741 | } | |
742 | ||
743 | /* | |
744 | FUNCTION | |
745 | bfd_set_error_program_name | |
746 | ||
747 | SYNOPSIS | |
748 | void bfd_set_error_program_name (const char *); | |
749 | ||
750 | DESCRIPTION | |
751 | Set the program name to use when printing a BFD error. This | |
752 | is printed before the error message followed by a colon and | |
753 | space. The string must not be changed after it is passed to | |
754 | this function. | |
755 | */ | |
756 | ||
757 | void | |
c58b9523 | 758 | bfd_set_error_program_name (const char *name) |
252b5132 RH |
759 | { |
760 | _bfd_error_program_name = name; | |
761 | } | |
762 | ||
252b5132 RH |
763 | /* |
764 | FUNCTION | |
765 | bfd_get_error_handler | |
766 | ||
767 | SYNOPSIS | |
768 | bfd_error_handler_type bfd_get_error_handler (void); | |
769 | ||
770 | DESCRIPTION | |
771 | Return the BFD error handler function. | |
772 | */ | |
773 | ||
774 | bfd_error_handler_type | |
c58b9523 | 775 | bfd_get_error_handler (void) |
252b5132 RH |
776 | { |
777 | return _bfd_error_handler; | |
778 | } | |
779 | \f | |
780 | /* | |
781 | SECTION | |
1b74d094 BW |
782 | Miscellaneous |
783 | ||
784 | SUBSECTION | |
785 | Miscellaneous functions | |
252b5132 RH |
786 | */ |
787 | ||
788 | /* | |
789 | FUNCTION | |
790 | bfd_get_reloc_upper_bound | |
791 | ||
792 | SYNOPSIS | |
ed781d5d | 793 | long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect); |
252b5132 RH |
794 | |
795 | DESCRIPTION | |
796 | Return the number of bytes required to store the | |
797 | relocation information associated with section @var{sect} | |
798 | attached to bfd @var{abfd}. If an error occurs, return -1. | |
799 | ||
800 | */ | |
801 | ||
252b5132 | 802 | long |
c58b9523 | 803 | bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) |
252b5132 | 804 | { |
55ab10f0 NC |
805 | if (abfd->format != bfd_object) |
806 | { | |
807 | bfd_set_error (bfd_error_invalid_operation); | |
808 | return -1; | |
809 | } | |
252b5132 RH |
810 | |
811 | return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect)); | |
812 | } | |
813 | ||
814 | /* | |
815 | FUNCTION | |
816 | bfd_canonicalize_reloc | |
817 | ||
818 | SYNOPSIS | |
819 | long bfd_canonicalize_reloc | |
c58b9523 | 820 | (bfd *abfd, asection *sec, arelent **loc, asymbol **syms); |
252b5132 RH |
821 | |
822 | DESCRIPTION | |
823 | Call the back end associated with the open BFD | |
824 | @var{abfd} and translate the external form of the relocation | |
825 | information attached to @var{sec} into the internal canonical | |
826 | form. Place the table into memory at @var{loc}, which has | |
827 | been preallocated, usually by a call to | |
828 | <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or | |
829 | -1 on error. | |
830 | ||
831 | The @var{syms} table is also needed for horrible internal magic | |
832 | reasons. | |
833 | ||
252b5132 RH |
834 | */ |
835 | long | |
c58b9523 AM |
836 | bfd_canonicalize_reloc (bfd *abfd, |
837 | sec_ptr asect, | |
838 | arelent **location, | |
839 | asymbol **symbols) | |
252b5132 | 840 | { |
55ab10f0 NC |
841 | if (abfd->format != bfd_object) |
842 | { | |
843 | bfd_set_error (bfd_error_invalid_operation); | |
844 | return -1; | |
845 | } | |
846 | ||
252b5132 RH |
847 | return BFD_SEND (abfd, _bfd_canonicalize_reloc, |
848 | (abfd, asect, location, symbols)); | |
849 | } | |
850 | ||
851 | /* | |
852 | FUNCTION | |
853 | bfd_set_reloc | |
854 | ||
855 | SYNOPSIS | |
856 | void bfd_set_reloc | |
b5f79c76 | 857 | (bfd *abfd, asection *sec, arelent **rel, unsigned int count); |
252b5132 RH |
858 | |
859 | DESCRIPTION | |
860 | Set the relocation pointer and count within | |
861 | section @var{sec} to the values @var{rel} and @var{count}. | |
862 | The argument @var{abfd} is ignored. | |
863 | ||
864 | */ | |
aebad5fe | 865 | |
252b5132 | 866 | void |
c58b9523 AM |
867 | bfd_set_reloc (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
868 | sec_ptr asect, | |
869 | arelent **location, | |
870 | unsigned int count) | |
252b5132 RH |
871 | { |
872 | asect->orelocation = location; | |
873 | asect->reloc_count = count; | |
874 | } | |
875 | ||
876 | /* | |
877 | FUNCTION | |
878 | bfd_set_file_flags | |
879 | ||
880 | SYNOPSIS | |
ed781d5d | 881 | bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags); |
252b5132 RH |
882 | |
883 | DESCRIPTION | |
884 | Set the flag word in the BFD @var{abfd} to the value @var{flags}. | |
885 | ||
886 | Possible errors are: | |
887 | o <<bfd_error_wrong_format>> - The target bfd was not of object format. | |
888 | o <<bfd_error_invalid_operation>> - The target bfd was open for reading. | |
889 | o <<bfd_error_invalid_operation>> - | |
890 | The flag word contained a bit which was not applicable to the | |
891 | type of file. E.g., an attempt was made to set the <<D_PAGED>> bit | |
892 | on a BFD format which does not support demand paging. | |
893 | ||
894 | */ | |
895 | ||
b34976b6 | 896 | bfd_boolean |
c58b9523 | 897 | bfd_set_file_flags (bfd *abfd, flagword flags) |
252b5132 | 898 | { |
55ab10f0 NC |
899 | if (abfd->format != bfd_object) |
900 | { | |
901 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 902 | return FALSE; |
55ab10f0 | 903 | } |
252b5132 | 904 | |
55ab10f0 NC |
905 | if (bfd_read_p (abfd)) |
906 | { | |
907 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 908 | return FALSE; |
55ab10f0 | 909 | } |
252b5132 RH |
910 | |
911 | bfd_get_file_flags (abfd) = flags; | |
55ab10f0 NC |
912 | if ((flags & bfd_applicable_file_flags (abfd)) != flags) |
913 | { | |
914 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 915 | return FALSE; |
55ab10f0 | 916 | } |
252b5132 | 917 | |
b34976b6 | 918 | return TRUE; |
252b5132 RH |
919 | } |
920 | ||
921 | void | |
c58b9523 | 922 | bfd_assert (const char *file, int line) |
252b5132 | 923 | { |
aec2f561 AM |
924 | (*_bfd_error_handler) (_("BFD %s assertion fail %s:%d"), |
925 | BFD_VERSION_STRING, file, line); | |
252b5132 RH |
926 | } |
927 | ||
c0bed66d ILT |
928 | /* A more or less friendly abort message. In libbfd.h abort is |
929 | defined to call this function. */ | |
930 | ||
c0bed66d | 931 | void |
c58b9523 | 932 | _bfd_abort (const char *file, int line, const char *fn) |
c0bed66d ILT |
933 | { |
934 | if (fn != NULL) | |
935 | (*_bfd_error_handler) | |
aec2f561 AM |
936 | (_("BFD %s internal error, aborting at %s line %d in %s\n"), |
937 | BFD_VERSION_STRING, file, line, fn); | |
c0bed66d ILT |
938 | else |
939 | (*_bfd_error_handler) | |
391154e9 | 940 | (_("BFD %s internal error, aborting at %s line %d\n"), |
aec2f561 | 941 | BFD_VERSION_STRING, file, line); |
c0bed66d | 942 | (*_bfd_error_handler) (_("Please report this bug.\n")); |
3168356f | 943 | _exit (EXIT_FAILURE); |
c0bed66d | 944 | } |
252b5132 | 945 | |
125c4a69 NC |
946 | /* |
947 | FUNCTION | |
948 | bfd_get_arch_size | |
949 | ||
950 | SYNOPSIS | |
951 | int bfd_get_arch_size (bfd *abfd); | |
952 | ||
953 | DESCRIPTION | |
954 | Returns the architecture address size, in bits, as determined | |
955 | by the object file's format. For ELF, this information is | |
956 | included in the header. | |
957 | ||
958 | RETURNS | |
959 | Returns the arch size in bits if known, <<-1>> otherwise. | |
960 | */ | |
961 | ||
962 | int | |
c58b9523 | 963 | bfd_get_arch_size (bfd *abfd) |
125c4a69 NC |
964 | { |
965 | if (abfd->xvec->flavour == bfd_target_elf_flavour) | |
c58b9523 | 966 | return get_elf_backend_data (abfd)->s->arch_size; |
125c4a69 | 967 | |
125c4a69 NC |
968 | return -1; |
969 | } | |
970 | ||
971 | /* | |
972 | FUNCTION | |
973 | bfd_get_sign_extend_vma | |
974 | ||
975 | SYNOPSIS | |
976 | int bfd_get_sign_extend_vma (bfd *abfd); | |
977 | ||
978 | DESCRIPTION | |
979 | Indicates if the target architecture "naturally" sign extends | |
980 | an address. Some architectures implicitly sign extend address | |
981 | values when they are converted to types larger than the size | |
982 | of an address. For instance, bfd_get_start_address() will | |
983 | return an address sign extended to fill a bfd_vma when this is | |
984 | the case. | |
985 | ||
986 | RETURNS | |
987 | Returns <<1>> if the target architecture is known to sign | |
988 | extend addresses, <<0>> if the target architecture is known to | |
989 | not sign extend addresses, and <<-1>> otherwise. | |
990 | */ | |
991 | ||
992 | int | |
c58b9523 | 993 | bfd_get_sign_extend_vma (bfd *abfd) |
125c4a69 | 994 | { |
f47e5071 NC |
995 | char *name; |
996 | ||
125c4a69 | 997 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
c58b9523 | 998 | return get_elf_backend_data (abfd)->sign_extend_vma; |
125c4a69 | 999 | |
f47e5071 NC |
1000 | name = bfd_get_target (abfd); |
1001 | ||
7148cc28 | 1002 | /* Return a proper value for DJGPP & PE COFF. |
f47e5071 NC |
1003 | This function is required for DWARF2 support, but there is |
1004 | no place to store this information in the COFF back end. | |
1005 | Should enough other COFF targets add support for DWARF2, | |
1006 | a place will have to be found. Until then, this hack will do. */ | |
0112cd26 | 1007 | if (CONST_STRNEQ (name, "coff-go32") |
8a7140c3 | 1008 | || strcmp (name, "pe-i386") == 0 |
f0927246 | 1009 | || strcmp (name, "pei-i386") == 0 |
6e3d6dc1 NC |
1010 | || strcmp (name, "pe-x86-64") == 0 |
1011 | || strcmp (name, "pei-x86-64") == 0 | |
7148cc28 NC |
1012 | || strcmp (name, "pe-arm-wince-little") == 0 |
1013 | || strcmp (name, "pei-arm-wince-little") == 0) | |
f47e5071 NC |
1014 | return 1; |
1015 | ||
09c6f846 TG |
1016 | if (CONST_STRNEQ (name, "mach-o")) |
1017 | return 0; | |
1018 | ||
a022216b | 1019 | bfd_set_error (bfd_error_wrong_format); |
125c4a69 NC |
1020 | return -1; |
1021 | } | |
1022 | ||
252b5132 RH |
1023 | /* |
1024 | FUNCTION | |
1025 | bfd_set_start_address | |
1026 | ||
1027 | SYNOPSIS | |
ed781d5d | 1028 | bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma); |
252b5132 RH |
1029 | |
1030 | DESCRIPTION | |
1031 | Make @var{vma} the entry point of output BFD @var{abfd}. | |
1032 | ||
1033 | RETURNS | |
b34976b6 | 1034 | Returns <<TRUE>> on success, <<FALSE>> otherwise. |
252b5132 RH |
1035 | */ |
1036 | ||
b34976b6 | 1037 | bfd_boolean |
c58b9523 | 1038 | bfd_set_start_address (bfd *abfd, bfd_vma vma) |
252b5132 RH |
1039 | { |
1040 | abfd->start_address = vma; | |
b34976b6 | 1041 | return TRUE; |
252b5132 RH |
1042 | } |
1043 | ||
252b5132 RH |
1044 | /* |
1045 | FUNCTION | |
1046 | bfd_get_gp_size | |
1047 | ||
1048 | SYNOPSIS | |
ed781d5d | 1049 | unsigned int bfd_get_gp_size (bfd *abfd); |
252b5132 RH |
1050 | |
1051 | DESCRIPTION | |
1052 | Return the maximum size of objects to be optimized using the GP | |
1053 | register under MIPS ECOFF. This is typically set by the <<-G>> | |
1054 | argument to the compiler, assembler or linker. | |
1055 | */ | |
1056 | ||
c0846b23 | 1057 | unsigned int |
c58b9523 | 1058 | bfd_get_gp_size (bfd *abfd) |
252b5132 RH |
1059 | { |
1060 | if (abfd->format == bfd_object) | |
1061 | { | |
1062 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) | |
1063 | return ecoff_data (abfd)->gp_size; | |
1064 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) | |
1065 | return elf_gp_size (abfd); | |
1066 | } | |
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | /* | |
1071 | FUNCTION | |
1072 | bfd_set_gp_size | |
1073 | ||
1074 | SYNOPSIS | |
ed781d5d | 1075 | void bfd_set_gp_size (bfd *abfd, unsigned int i); |
252b5132 RH |
1076 | |
1077 | DESCRIPTION | |
1078 | Set the maximum size of objects to be optimized using the GP | |
1079 | register under ECOFF or MIPS ELF. This is typically set by | |
1080 | the <<-G>> argument to the compiler, assembler or linker. | |
1081 | */ | |
1082 | ||
1083 | void | |
c58b9523 | 1084 | bfd_set_gp_size (bfd *abfd, unsigned int i) |
252b5132 | 1085 | { |
55ab10f0 | 1086 | /* Don't try to set GP size on an archive or core file! */ |
252b5132 RH |
1087 | if (abfd->format != bfd_object) |
1088 | return; | |
55ab10f0 | 1089 | |
252b5132 RH |
1090 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) |
1091 | ecoff_data (abfd)->gp_size = i; | |
1092 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) | |
1093 | elf_gp_size (abfd) = i; | |
1094 | } | |
1095 | ||
1096 | /* Get the GP value. This is an internal function used by some of the | |
1097 | relocation special_function routines on targets which support a GP | |
1098 | register. */ | |
1099 | ||
1100 | bfd_vma | |
c58b9523 | 1101 | _bfd_get_gp_value (bfd *abfd) |
252b5132 | 1102 | { |
9bcf4de0 TS |
1103 | if (! abfd) |
1104 | return 0; | |
55ab10f0 NC |
1105 | if (abfd->format != bfd_object) |
1106 | return 0; | |
1107 | ||
1108 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) | |
1109 | return ecoff_data (abfd)->gp; | |
1110 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) | |
1111 | return elf_gp (abfd); | |
1112 | ||
252b5132 RH |
1113 | return 0; |
1114 | } | |
1115 | ||
1116 | /* Set the GP value. */ | |
1117 | ||
1118 | void | |
c58b9523 | 1119 | _bfd_set_gp_value (bfd *abfd, bfd_vma v) |
252b5132 | 1120 | { |
9bcf4de0 | 1121 | if (! abfd) |
c2c96631 | 1122 | abort (); |
252b5132 RH |
1123 | if (abfd->format != bfd_object) |
1124 | return; | |
55ab10f0 | 1125 | |
252b5132 RH |
1126 | if (abfd->xvec->flavour == bfd_target_ecoff_flavour) |
1127 | ecoff_data (abfd)->gp = v; | |
1128 | else if (abfd->xvec->flavour == bfd_target_elf_flavour) | |
1129 | elf_gp (abfd) = v; | |
1130 | } | |
1131 | ||
1132 | /* | |
1133 | FUNCTION | |
1134 | bfd_scan_vma | |
1135 | ||
1136 | SYNOPSIS | |
ed781d5d | 1137 | bfd_vma bfd_scan_vma (const char *string, const char **end, int base); |
252b5132 RH |
1138 | |
1139 | DESCRIPTION | |
1140 | Convert, like <<strtoul>>, a numerical expression | |
1141 | @var{string} into a <<bfd_vma>> integer, and return that integer. | |
1142 | (Though without as many bells and whistles as <<strtoul>>.) | |
1143 | The expression is assumed to be unsigned (i.e., positive). | |
1144 | If given a @var{base}, it is used as the base for conversion. | |
1145 | A base of 0 causes the function to interpret the string | |
1146 | in hex if a leading "0x" or "0X" is found, otherwise | |
1147 | in octal if a leading zero is found, otherwise in decimal. | |
1148 | ||
88eaccc2 AM |
1149 | If the value would overflow, the maximum <<bfd_vma>> value is |
1150 | returned. | |
252b5132 RH |
1151 | */ |
1152 | ||
1153 | bfd_vma | |
c58b9523 | 1154 | bfd_scan_vma (const char *string, const char **end, int base) |
252b5132 RH |
1155 | { |
1156 | bfd_vma value; | |
88eaccc2 AM |
1157 | bfd_vma cutoff; |
1158 | unsigned int cutlim; | |
1159 | int overflow; | |
252b5132 RH |
1160 | |
1161 | /* Let the host do it if possible. */ | |
eb6e10cb | 1162 | if (sizeof (bfd_vma) <= sizeof (unsigned long)) |
c58b9523 | 1163 | return strtoul (string, (char **) end, base); |
252b5132 | 1164 | |
49c97a80 ILT |
1165 | #ifdef HAVE_STRTOULL |
1166 | if (sizeof (bfd_vma) <= sizeof (unsigned long long)) | |
1167 | return strtoull (string, (char **) end, base); | |
1168 | #endif | |
1169 | ||
252b5132 RH |
1170 | if (base == 0) |
1171 | { | |
1172 | if (string[0] == '0') | |
1173 | { | |
1174 | if ((string[1] == 'x') || (string[1] == 'X')) | |
1175 | base = 16; | |
252b5132 RH |
1176 | else |
1177 | base = 8; | |
1178 | } | |
252b5132 | 1179 | } |
55ab10f0 | 1180 | |
88eaccc2 AM |
1181 | if ((base < 2) || (base > 36)) |
1182 | base = 10; | |
1183 | ||
1184 | if (base == 16 | |
1185 | && string[0] == '0' | |
1186 | && (string[1] == 'x' || string[1] == 'X') | |
1187 | && ISXDIGIT (string[2])) | |
1188 | { | |
1189 | string += 2; | |
1190 | } | |
aebad5fe | 1191 | |
88eaccc2 AM |
1192 | cutoff = (~ (bfd_vma) 0) / (bfd_vma) base; |
1193 | cutlim = (~ (bfd_vma) 0) % (bfd_vma) base; | |
1194 | value = 0; | |
1195 | overflow = 0; | |
1196 | while (1) | |
1197 | { | |
1198 | unsigned int digit; | |
1199 | ||
1200 | digit = *string; | |
1201 | if (ISDIGIT (digit)) | |
1202 | digit = digit - '0'; | |
1203 | else if (ISALPHA (digit)) | |
1204 | digit = TOUPPER (digit) - 'A' + 10; | |
1205 | else | |
1206 | break; | |
1207 | if (digit >= (unsigned int) base) | |
1208 | break; | |
1209 | if (value > cutoff || (value == cutoff && digit > cutlim)) | |
1210 | overflow = 1; | |
1211 | value = value * base + digit; | |
1212 | ++string; | |
1213 | } | |
252b5132 | 1214 | |
88eaccc2 AM |
1215 | if (overflow) |
1216 | value = ~ (bfd_vma) 0; | |
252b5132 | 1217 | |
88eaccc2 AM |
1218 | if (end != NULL) |
1219 | *end = string; | |
252b5132 RH |
1220 | |
1221 | return value; | |
1222 | } | |
1223 | ||
80fccad2 BW |
1224 | /* |
1225 | FUNCTION | |
1226 | bfd_copy_private_header_data | |
1227 | ||
1228 | SYNOPSIS | |
1229 | bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd); | |
1230 | ||
1231 | DESCRIPTION | |
1232 | Copy private BFD header information from the BFD @var{ibfd} to the | |
1233 | the BFD @var{obfd}. This copies information that may require | |
1234 | sections to exist, but does not require symbol tables. Return | |
1235 | <<true>> on success, <<false>> on error. | |
1236 | Possible error returns are: | |
1237 | ||
1238 | o <<bfd_error_no_memory>> - | |
1239 | Not enough memory exists to create private data for @var{obfd}. | |
1240 | ||
1241 | .#define bfd_copy_private_header_data(ibfd, obfd) \ | |
1242 | . BFD_SEND (obfd, _bfd_copy_private_header_data, \ | |
1243 | . (ibfd, obfd)) | |
1244 | ||
1245 | */ | |
1246 | ||
252b5132 RH |
1247 | /* |
1248 | FUNCTION | |
1249 | bfd_copy_private_bfd_data | |
1250 | ||
1251 | SYNOPSIS | |
ed781d5d | 1252 | bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd); |
252b5132 RH |
1253 | |
1254 | DESCRIPTION | |
aebad5fe | 1255 | Copy private BFD information from the BFD @var{ibfd} to the |
b34976b6 | 1256 | the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error. |
252b5132 RH |
1257 | Possible error returns are: |
1258 | ||
1259 | o <<bfd_error_no_memory>> - | |
1260 | Not enough memory exists to create private data for @var{obfd}. | |
1261 | ||
1262 | .#define bfd_copy_private_bfd_data(ibfd, obfd) \ | |
1263 | . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \ | |
1264 | . (ibfd, obfd)) | |
1265 | ||
1266 | */ | |
1267 | ||
1268 | /* | |
1269 | FUNCTION | |
1270 | bfd_merge_private_bfd_data | |
1271 | ||
1272 | SYNOPSIS | |
ed781d5d | 1273 | bfd_boolean bfd_merge_private_bfd_data (bfd *ibfd, bfd *obfd); |
252b5132 RH |
1274 | |
1275 | DESCRIPTION | |
aebad5fe | 1276 | Merge private BFD information from the BFD @var{ibfd} to the |
b34976b6 AM |
1277 | the output file BFD @var{obfd} when linking. Return <<TRUE>> |
1278 | on success, <<FALSE>> on error. Possible error returns are: | |
252b5132 RH |
1279 | |
1280 | o <<bfd_error_no_memory>> - | |
1281 | Not enough memory exists to create private data for @var{obfd}. | |
1282 | ||
1283 | .#define bfd_merge_private_bfd_data(ibfd, obfd) \ | |
1284 | . BFD_SEND (obfd, _bfd_merge_private_bfd_data, \ | |
1285 | . (ibfd, obfd)) | |
1286 | ||
1287 | */ | |
1288 | ||
1289 | /* | |
1290 | FUNCTION | |
1291 | bfd_set_private_flags | |
1292 | ||
1293 | SYNOPSIS | |
ed781d5d | 1294 | bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags); |
252b5132 RH |
1295 | |
1296 | DESCRIPTION | |
1297 | Set private BFD flag information in the BFD @var{abfd}. | |
b34976b6 | 1298 | Return <<TRUE>> on success, <<FALSE>> on error. Possible error |
252b5132 RH |
1299 | returns are: |
1300 | ||
1301 | o <<bfd_error_no_memory>> - | |
1302 | Not enough memory exists to create private data for @var{obfd}. | |
1303 | ||
1304 | .#define bfd_set_private_flags(abfd, flags) \ | |
ed781d5d | 1305 | . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags)) |
252b5132 RH |
1306 | |
1307 | */ | |
1308 | ||
1309 | /* | |
1310 | FUNCTION | |
ed781d5d | 1311 | Other functions |
252b5132 RH |
1312 | |
1313 | DESCRIPTION | |
ed781d5d | 1314 | The following functions exist but have not yet been documented. |
252b5132 | 1315 | |
a6b96beb AM |
1316 | .#define bfd_sizeof_headers(abfd, info) \ |
1317 | . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info)) | |
252b5132 RH |
1318 | . |
1319 | .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \ | |
ed781d5d NC |
1320 | . BFD_SEND (abfd, _bfd_find_nearest_line, \ |
1321 | . (abfd, sec, syms, off, file, func, line)) | |
252b5132 | 1322 | . |
5420f73d L |
1323 | .#define bfd_find_line(abfd, syms, sym, file, line) \ |
1324 | . BFD_SEND (abfd, _bfd_find_line, \ | |
1325 | . (abfd, syms, sym, file, line)) | |
1326 | . | |
4ab527b0 FF |
1327 | .#define bfd_find_inliner_info(abfd, file, func, line) \ |
1328 | . BFD_SEND (abfd, _bfd_find_inliner_info, \ | |
1329 | . (abfd, file, func, line)) | |
1330 | . | |
252b5132 | 1331 | .#define bfd_debug_info_start(abfd) \ |
ed781d5d | 1332 | . BFD_SEND (abfd, _bfd_debug_info_start, (abfd)) |
252b5132 RH |
1333 | . |
1334 | .#define bfd_debug_info_end(abfd) \ | |
ed781d5d | 1335 | . BFD_SEND (abfd, _bfd_debug_info_end, (abfd)) |
252b5132 RH |
1336 | . |
1337 | .#define bfd_debug_info_accumulate(abfd, section) \ | |
ed781d5d | 1338 | . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section)) |
252b5132 RH |
1339 | . |
1340 | .#define bfd_stat_arch_elt(abfd, stat) \ | |
ed781d5d | 1341 | . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat)) |
252b5132 RH |
1342 | . |
1343 | .#define bfd_update_armap_timestamp(abfd) \ | |
ed781d5d | 1344 | . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd)) |
252b5132 RH |
1345 | . |
1346 | .#define bfd_set_arch_mach(abfd, arch, mach)\ | |
ed781d5d | 1347 | . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach)) |
252b5132 RH |
1348 | . |
1349 | .#define bfd_relax_section(abfd, section, link_info, again) \ | |
1350 | . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again)) | |
1351 | . | |
1352 | .#define bfd_gc_sections(abfd, link_info) \ | |
1353 | . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info)) | |
8550eb6e JJ |
1354 | . |
1355 | .#define bfd_merge_sections(abfd, link_info) \ | |
1356 | . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info)) | |
252b5132 | 1357 | . |
72adc230 AM |
1358 | .#define bfd_is_group_section(abfd, sec) \ |
1359 | . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec)) | |
1360 | . | |
e61463e1 AM |
1361 | .#define bfd_discard_group(abfd, sec) \ |
1362 | . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec)) | |
1363 | . | |
252b5132 RH |
1364 | .#define bfd_link_hash_table_create(abfd) \ |
1365 | . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd)) | |
1366 | . | |
e2d34d7d DJ |
1367 | .#define bfd_link_hash_table_free(abfd, hash) \ |
1368 | . BFD_SEND (abfd, _bfd_link_hash_table_free, (hash)) | |
1369 | . | |
252b5132 RH |
1370 | .#define bfd_link_add_symbols(abfd, info) \ |
1371 | . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info)) | |
1372 | . | |
1449d79b | 1373 | .#define bfd_link_just_syms(abfd, sec, info) \ |
2d653fc7 AM |
1374 | . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info)) |
1375 | . | |
252b5132 RH |
1376 | .#define bfd_final_link(abfd, info) \ |
1377 | . BFD_SEND (abfd, _bfd_final_link, (abfd, info)) | |
1378 | . | |
1379 | .#define bfd_free_cached_info(abfd) \ | |
1380 | . BFD_SEND (abfd, _bfd_free_cached_info, (abfd)) | |
1381 | . | |
1382 | .#define bfd_get_dynamic_symtab_upper_bound(abfd) \ | |
1383 | . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd)) | |
1384 | . | |
1385 | .#define bfd_print_private_bfd_data(abfd, file)\ | |
1386 | . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file)) | |
1387 | . | |
1388 | .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \ | |
1389 | . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols)) | |
1390 | . | |
c9727e01 AM |
1391 | .#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \ |
1392 | . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \ | |
1393 | . dyncount, dynsyms, ret)) | |
4c45e5c9 | 1394 | . |
252b5132 RH |
1395 | .#define bfd_get_dynamic_reloc_upper_bound(abfd) \ |
1396 | . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd)) | |
1397 | . | |
1398 | .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \ | |
1399 | . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms)) | |
1400 | . | |
1401 | .extern bfd_byte *bfd_get_relocated_section_contents | |
c58b9523 AM |
1402 | . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *, |
1403 | . bfd_boolean, asymbol **); | |
252b5132 RH |
1404 | . |
1405 | ||
1406 | */ | |
1407 | ||
1408 | bfd_byte * | |
c58b9523 AM |
1409 | bfd_get_relocated_section_contents (bfd *abfd, |
1410 | struct bfd_link_info *link_info, | |
1411 | struct bfd_link_order *link_order, | |
1412 | bfd_byte *data, | |
1413 | bfd_boolean relocatable, | |
1414 | asymbol **symbols) | |
252b5132 RH |
1415 | { |
1416 | bfd *abfd2; | |
c58b9523 AM |
1417 | bfd_byte *(*fn) (bfd *, struct bfd_link_info *, struct bfd_link_order *, |
1418 | bfd_byte *, bfd_boolean, asymbol **); | |
252b5132 RH |
1419 | |
1420 | if (link_order->type == bfd_indirect_link_order) | |
1421 | { | |
1422 | abfd2 = link_order->u.indirect.section->owner; | |
55ab10f0 | 1423 | if (abfd2 == NULL) |
252b5132 RH |
1424 | abfd2 = abfd; |
1425 | } | |
1426 | else | |
1427 | abfd2 = abfd; | |
55ab10f0 | 1428 | |
252b5132 RH |
1429 | fn = abfd2->xvec->_bfd_get_relocated_section_contents; |
1430 | ||
1049f94e | 1431 | return (*fn) (abfd, link_info, link_order, data, relocatable, symbols); |
252b5132 RH |
1432 | } |
1433 | ||
1434 | /* Record information about an ELF program header. */ | |
1435 | ||
b34976b6 | 1436 | bfd_boolean |
c58b9523 AM |
1437 | bfd_record_phdr (bfd *abfd, |
1438 | unsigned long type, | |
1439 | bfd_boolean flags_valid, | |
1440 | flagword flags, | |
1441 | bfd_boolean at_valid, | |
1442 | bfd_vma at, | |
1443 | bfd_boolean includes_filehdr, | |
1444 | bfd_boolean includes_phdrs, | |
1445 | unsigned int count, | |
1446 | asection **secs) | |
252b5132 RH |
1447 | { |
1448 | struct elf_segment_map *m, **pm; | |
dc810e39 | 1449 | bfd_size_type amt; |
252b5132 RH |
1450 | |
1451 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) | |
b34976b6 | 1452 | return TRUE; |
252b5132 | 1453 | |
dc810e39 AM |
1454 | amt = sizeof (struct elf_segment_map); |
1455 | amt += ((bfd_size_type) count - 1) * sizeof (asection *); | |
a50b1753 | 1456 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
252b5132 | 1457 | if (m == NULL) |
b34976b6 | 1458 | return FALSE; |
252b5132 | 1459 | |
252b5132 RH |
1460 | m->p_type = type; |
1461 | m->p_flags = flags; | |
1462 | m->p_paddr = at; | |
c58b9523 AM |
1463 | m->p_flags_valid = flags_valid; |
1464 | m->p_paddr_valid = at_valid; | |
1465 | m->includes_filehdr = includes_filehdr; | |
1466 | m->includes_phdrs = includes_phdrs; | |
252b5132 RH |
1467 | m->count = count; |
1468 | if (count > 0) | |
1469 | memcpy (m->sections, secs, count * sizeof (asection *)); | |
1470 | ||
1471 | for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next) | |
1472 | ; | |
1473 | *pm = m; | |
1474 | ||
b34976b6 | 1475 | return TRUE; |
252b5132 | 1476 | } |
ae4221d7 | 1477 | |
01a3c213 AM |
1478 | #ifdef BFD64 |
1479 | /* Return true iff this target is 32-bit. */ | |
1480 | ||
1481 | static bfd_boolean | |
1482 | is32bit (bfd *abfd) | |
ae4221d7 L |
1483 | { |
1484 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) | |
01a3c213 AM |
1485 | { |
1486 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
1487 | return bed->s->elfclass == ELFCLASS32; | |
1488 | } | |
1489 | ||
6aa341c7 TG |
1490 | /* For non-ELF targets, use architecture information. */ |
1491 | return bfd_arch_bits_per_address (abfd) <= 32; | |
ae4221d7 | 1492 | } |
01a3c213 AM |
1493 | #endif |
1494 | ||
1495 | /* bfd_sprintf_vma and bfd_fprintf_vma display an address in the | |
1496 | target's address size. */ | |
ae4221d7 L |
1497 | |
1498 | void | |
01a3c213 | 1499 | bfd_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
ae4221d7 | 1500 | { |
970ccc77 | 1501 | #ifdef BFD64 |
01a3c213 AM |
1502 | if (is32bit (abfd)) |
1503 | { | |
1504 | sprintf (buf, "%08lx", (unsigned long) value & 0xffffffff); | |
1505 | return; | |
1506 | } | |
970ccc77 | 1507 | #endif |
01a3c213 AM |
1508 | sprintf_vma (buf, value); |
1509 | } | |
1510 | ||
1511 | void | |
1512 | bfd_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) | |
1513 | { | |
1514 | #ifdef BFD64 | |
1515 | if (is32bit (abfd)) | |
1516 | { | |
1517 | fprintf ((FILE *) stream, "%08lx", (unsigned long) value & 0xffffffff); | |
1518 | return; | |
1519 | } | |
1520 | #endif | |
1521 | fprintf_vma ((FILE *) stream, value); | |
ae4221d7 | 1522 | } |
8c98ec7d AO |
1523 | |
1524 | /* | |
1525 | FUNCTION | |
1526 | bfd_alt_mach_code | |
1527 | ||
1528 | SYNOPSIS | |
ed781d5d | 1529 | bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative); |
8c98ec7d AO |
1530 | |
1531 | DESCRIPTION | |
1532 | ||
1533 | When more than one machine code number is available for the | |
1534 | same machine type, this function can be used to switch between | |
47badb7b | 1535 | the preferred one (alternative == 0) and any others. Currently, |
8c98ec7d AO |
1536 | only ELF supports this feature, with up to two alternate |
1537 | machine codes. | |
1538 | */ | |
1539 | ||
b34976b6 | 1540 | bfd_boolean |
c58b9523 | 1541 | bfd_alt_mach_code (bfd *abfd, int alternative) |
8c98ec7d AO |
1542 | { |
1543 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) | |
1544 | { | |
1545 | int code; | |
1546 | ||
47badb7b | 1547 | switch (alternative) |
8c98ec7d AO |
1548 | { |
1549 | case 0: | |
1550 | code = get_elf_backend_data (abfd)->elf_machine_code; | |
1551 | break; | |
1552 | ||
1553 | case 1: | |
1554 | code = get_elf_backend_data (abfd)->elf_machine_alt1; | |
1555 | if (code == 0) | |
b34976b6 | 1556 | return FALSE; |
8c98ec7d AO |
1557 | break; |
1558 | ||
1559 | case 2: | |
1560 | code = get_elf_backend_data (abfd)->elf_machine_alt2; | |
1561 | if (code == 0) | |
b34976b6 | 1562 | return FALSE; |
8c98ec7d AO |
1563 | break; |
1564 | ||
1565 | default: | |
b34976b6 | 1566 | return FALSE; |
8c98ec7d AO |
1567 | } |
1568 | ||
1569 | elf_elfheader (abfd)->e_machine = code; | |
1570 | ||
b34976b6 | 1571 | return TRUE; |
8c98ec7d AO |
1572 | } |
1573 | ||
b34976b6 | 1574 | return FALSE; |
8c98ec7d | 1575 | } |
e84d6fca AM |
1576 | |
1577 | /* | |
1578 | CODE_FRAGMENT | |
1579 | ||
1580 | .struct bfd_preserve | |
1581 | .{ | |
c58b9523 AM |
1582 | . void *marker; |
1583 | . void *tdata; | |
e84d6fca AM |
1584 | . flagword flags; |
1585 | . const struct bfd_arch_info *arch_info; | |
198beae2 | 1586 | . struct bfd_section *sections; |
5daa8fe7 | 1587 | . struct bfd_section *section_last; |
e84d6fca AM |
1588 | . unsigned int section_count; |
1589 | . struct bfd_hash_table section_htab; | |
1590 | .}; | |
1591 | . | |
1592 | */ | |
1593 | ||
1594 | /* | |
1595 | FUNCTION | |
1596 | bfd_preserve_save | |
1597 | ||
1598 | SYNOPSIS | |
b34976b6 | 1599 | bfd_boolean bfd_preserve_save (bfd *, struct bfd_preserve *); |
e84d6fca AM |
1600 | |
1601 | DESCRIPTION | |
1602 | When testing an object for compatibility with a particular | |
1603 | target back-end, the back-end object_p function needs to set | |
1604 | up certain fields in the bfd on successfully recognizing the | |
1605 | object. This typically happens in a piecemeal fashion, with | |
1606 | failures possible at many points. On failure, the bfd is | |
1607 | supposed to be restored to its initial state, which is | |
1608 | virtually impossible. However, restoring a subset of the bfd | |
1609 | state works in practice. This function stores the subset and | |
1610 | reinitializes the bfd. | |
1611 | ||
1612 | */ | |
1613 | ||
b34976b6 | 1614 | bfd_boolean |
c58b9523 | 1615 | bfd_preserve_save (bfd *abfd, struct bfd_preserve *preserve) |
e84d6fca AM |
1616 | { |
1617 | preserve->tdata = abfd->tdata.any; | |
1618 | preserve->arch_info = abfd->arch_info; | |
1619 | preserve->flags = abfd->flags; | |
e84d6fca | 1620 | preserve->sections = abfd->sections; |
5daa8fe7 | 1621 | preserve->section_last = abfd->section_last; |
e84d6fca AM |
1622 | preserve->section_count = abfd->section_count; |
1623 | preserve->section_htab = abfd->section_htab; | |
1624 | ||
66eb6687 AM |
1625 | if (! bfd_hash_table_init (&abfd->section_htab, bfd_section_hash_newfunc, |
1626 | sizeof (struct section_hash_entry))) | |
b34976b6 | 1627 | return FALSE; |
e84d6fca AM |
1628 | |
1629 | abfd->tdata.any = NULL; | |
1630 | abfd->arch_info = &bfd_default_arch_struct; | |
3ae41454 | 1631 | abfd->flags &= BFD_IN_MEMORY; |
e84d6fca | 1632 | abfd->sections = NULL; |
5daa8fe7 | 1633 | abfd->section_last = NULL; |
e84d6fca AM |
1634 | abfd->section_count = 0; |
1635 | ||
b34976b6 | 1636 | return TRUE; |
e84d6fca AM |
1637 | } |
1638 | ||
1639 | /* | |
1640 | FUNCTION | |
1641 | bfd_preserve_restore | |
1642 | ||
1643 | SYNOPSIS | |
1644 | void bfd_preserve_restore (bfd *, struct bfd_preserve *); | |
1645 | ||
1646 | DESCRIPTION | |
1647 | This function restores bfd state saved by bfd_preserve_save. | |
1648 | If MARKER is non-NULL in struct bfd_preserve then that block | |
1649 | and all subsequently bfd_alloc'd memory is freed. | |
1650 | ||
1651 | */ | |
1652 | ||
1653 | void | |
c58b9523 | 1654 | bfd_preserve_restore (bfd *abfd, struct bfd_preserve *preserve) |
e84d6fca AM |
1655 | { |
1656 | bfd_hash_table_free (&abfd->section_htab); | |
1657 | ||
1658 | abfd->tdata.any = preserve->tdata; | |
1659 | abfd->arch_info = preserve->arch_info; | |
1660 | abfd->flags = preserve->flags; | |
e84d6fca AM |
1661 | abfd->section_htab = preserve->section_htab; |
1662 | abfd->sections = preserve->sections; | |
5daa8fe7 | 1663 | abfd->section_last = preserve->section_last; |
e84d6fca AM |
1664 | abfd->section_count = preserve->section_count; |
1665 | ||
1666 | /* bfd_release frees all memory more recently bfd_alloc'd than | |
1667 | its arg, as well as its arg. */ | |
1668 | if (preserve->marker != NULL) | |
1669 | { | |
1670 | bfd_release (abfd, preserve->marker); | |
1671 | preserve->marker = NULL; | |
1672 | } | |
1673 | } | |
1674 | ||
1675 | /* | |
1676 | FUNCTION | |
1677 | bfd_preserve_finish | |
1678 | ||
1679 | SYNOPSIS | |
1680 | void bfd_preserve_finish (bfd *, struct bfd_preserve *); | |
1681 | ||
1682 | DESCRIPTION | |
1683 | This function should be called when the bfd state saved by | |
1684 | bfd_preserve_save is no longer needed. ie. when the back-end | |
1685 | object_p function returns with success. | |
1686 | ||
1687 | */ | |
1688 | ||
1689 | void | |
c58b9523 | 1690 | bfd_preserve_finish (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_preserve *preserve) |
e84d6fca AM |
1691 | { |
1692 | /* It would be nice to be able to free more memory here, eg. old | |
1693 | tdata, but that's not possible since these blocks are sitting | |
1694 | inside bfd_alloc'd memory. The section hash is on a separate | |
1695 | objalloc. */ | |
1696 | bfd_hash_table_free (&preserve->section_htab); | |
1697 | } | |
24718e3b L |
1698 | |
1699 | /* | |
1700 | FUNCTION | |
1701 | bfd_emul_get_maxpagesize | |
1702 | ||
1703 | SYNOPSIS | |
1704 | bfd_vma bfd_emul_get_maxpagesize (const char *); | |
1705 | ||
1706 | DESCRIPTION | |
1707 | Returns the maximum page size, in bytes, as determined by | |
1708 | emulation. | |
1709 | ||
1710 | RETURNS | |
095106a2 | 1711 | Returns the maximum page size in bytes for ELF, 0 otherwise. |
24718e3b L |
1712 | */ |
1713 | ||
1714 | bfd_vma | |
1715 | bfd_emul_get_maxpagesize (const char *emul) | |
1716 | { | |
1717 | const bfd_target *target; | |
1718 | ||
1719 | target = bfd_find_target (emul, NULL); | |
1720 | if (target != NULL | |
1721 | && target->flavour == bfd_target_elf_flavour) | |
1722 | return xvec_get_elf_backend_data (target)->maxpagesize; | |
1723 | ||
24718e3b L |
1724 | return 0; |
1725 | } | |
1726 | ||
1727 | static void | |
1728 | bfd_elf_set_pagesize (const bfd_target *target, bfd_vma size, | |
1729 | int offset, const bfd_target *orig_target) | |
1730 | { | |
1731 | if (target->flavour == bfd_target_elf_flavour) | |
1732 | { | |
1733 | const struct elf_backend_data *bed; | |
1734 | ||
1735 | bed = xvec_get_elf_backend_data (target); | |
1736 | *((bfd_vma *) ((char *) bed + offset)) = size; | |
1737 | } | |
1738 | ||
1739 | if (target->alternative_target | |
1740 | && target->alternative_target != orig_target) | |
1741 | bfd_elf_set_pagesize (target->alternative_target, size, offset, | |
1742 | orig_target); | |
1743 | } | |
1744 | ||
1745 | /* | |
1746 | FUNCTION | |
1747 | bfd_emul_set_maxpagesize | |
1748 | ||
1749 | SYNOPSIS | |
1750 | void bfd_emul_set_maxpagesize (const char *, bfd_vma); | |
1751 | ||
1752 | DESCRIPTION | |
1753 | For ELF, set the maximum page size for the emulation. It is | |
1754 | a no-op for other formats. | |
1755 | ||
1756 | */ | |
1757 | ||
1758 | void | |
1759 | bfd_emul_set_maxpagesize (const char *emul, bfd_vma size) | |
1760 | { | |
1761 | const bfd_target *target; | |
1762 | ||
1763 | target = bfd_find_target (emul, NULL); | |
1764 | if (target) | |
1765 | bfd_elf_set_pagesize (target, size, | |
1766 | offsetof (struct elf_backend_data, | |
1767 | maxpagesize), target); | |
1768 | } | |
1769 | ||
1770 | /* | |
1771 | FUNCTION | |
1772 | bfd_emul_get_commonpagesize | |
1773 | ||
1774 | SYNOPSIS | |
1775 | bfd_vma bfd_emul_get_commonpagesize (const char *); | |
1776 | ||
1777 | DESCRIPTION | |
1778 | Returns the common page size, in bytes, as determined by | |
1779 | emulation. | |
1780 | ||
1781 | RETURNS | |
095106a2 | 1782 | Returns the common page size in bytes for ELF, 0 otherwise. |
24718e3b L |
1783 | */ |
1784 | ||
1785 | bfd_vma | |
1786 | bfd_emul_get_commonpagesize (const char *emul) | |
1787 | { | |
1788 | const bfd_target *target; | |
1789 | ||
1790 | target = bfd_find_target (emul, NULL); | |
1791 | if (target != NULL | |
1792 | && target->flavour == bfd_target_elf_flavour) | |
1793 | return xvec_get_elf_backend_data (target)->commonpagesize; | |
1794 | ||
24718e3b L |
1795 | return 0; |
1796 | } | |
1797 | ||
1798 | /* | |
1799 | FUNCTION | |
1800 | bfd_emul_set_commonpagesize | |
1801 | ||
1802 | SYNOPSIS | |
1803 | void bfd_emul_set_commonpagesize (const char *, bfd_vma); | |
1804 | ||
1805 | DESCRIPTION | |
1806 | For ELF, set the common page size for the emulation. It is | |
1807 | a no-op for other formats. | |
1808 | ||
1809 | */ | |
1810 | ||
1811 | void | |
1812 | bfd_emul_set_commonpagesize (const char *emul, bfd_vma size) | |
1813 | { | |
1814 | const bfd_target *target; | |
1815 | ||
1816 | target = bfd_find_target (emul, NULL); | |
1817 | if (target) | |
1818 | bfd_elf_set_pagesize (target, size, | |
1819 | offsetof (struct elf_backend_data, | |
1820 | commonpagesize), target); | |
1821 | } | |
3fad56a3 AM |
1822 | |
1823 | /* | |
1824 | FUNCTION | |
1825 | bfd_demangle | |
1826 | ||
1827 | SYNOPSIS | |
1828 | char *bfd_demangle (bfd *, const char *, int); | |
1829 | ||
1830 | DESCRIPTION | |
1831 | Wrapper around cplus_demangle. Strips leading underscores and | |
1832 | other such chars that would otherwise confuse the demangler. | |
1833 | If passed a g++ v3 ABI mangled name, returns a buffer allocated | |
1834 | with malloc holding the demangled name. Returns NULL otherwise | |
1835 | and on memory alloc failure. | |
1836 | */ | |
1837 | ||
1838 | char * | |
1839 | bfd_demangle (bfd *abfd, const char *name, int options) | |
1840 | { | |
1841 | char *res, *alloc; | |
1842 | const char *pre, *suf; | |
1843 | size_t pre_len; | |
c29aae59 | 1844 | bfd_boolean skip_lead; |
3fad56a3 | 1845 | |
c29aae59 AM |
1846 | skip_lead = (abfd != NULL |
1847 | && *name != '\0' | |
1848 | && bfd_get_symbol_leading_char (abfd) == *name); | |
1849 | if (skip_lead) | |
3fad56a3 AM |
1850 | ++name; |
1851 | ||
1852 | /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF | |
1853 | or the MS PE format. These formats have a number of leading '.'s | |
1854 | on at least some symbols, so we remove all dots to avoid | |
1855 | confusing the demangler. */ | |
1856 | pre = name; | |
1857 | while (*name == '.' || *name == '$') | |
1858 | ++name; | |
1859 | pre_len = name - pre; | |
1860 | ||
1861 | /* Strip off @plt and suchlike too. */ | |
1862 | alloc = NULL; | |
1863 | suf = strchr (name, '@'); | |
1864 | if (suf != NULL) | |
1865 | { | |
a50b1753 | 1866 | alloc = (char *) bfd_malloc (suf - name + 1); |
3fad56a3 AM |
1867 | if (alloc == NULL) |
1868 | return NULL; | |
1869 | memcpy (alloc, name, suf - name); | |
1870 | alloc[suf - name] = '\0'; | |
1871 | name = alloc; | |
1872 | } | |
1873 | ||
1874 | res = cplus_demangle (name, options); | |
1875 | ||
1876 | if (alloc != NULL) | |
1877 | free (alloc); | |
1878 | ||
1879 | if (res == NULL) | |
c29aae59 AM |
1880 | { |
1881 | if (skip_lead) | |
1882 | { | |
1883 | size_t len = strlen (pre) + 1; | |
a50b1753 | 1884 | alloc = (char *) bfd_malloc (len); |
c29aae59 AM |
1885 | if (alloc == NULL) |
1886 | return NULL; | |
1887 | memcpy (alloc, pre, len); | |
1888 | return alloc; | |
1889 | } | |
1890 | return NULL; | |
1891 | } | |
3fad56a3 AM |
1892 | |
1893 | /* Put back any prefix or suffix. */ | |
1894 | if (pre_len != 0 || suf != NULL) | |
1895 | { | |
1896 | size_t len; | |
1897 | size_t suf_len; | |
1898 | char *final; | |
1899 | ||
1900 | len = strlen (res); | |
1901 | if (suf == NULL) | |
1902 | suf = res + len; | |
1903 | suf_len = strlen (suf) + 1; | |
a50b1753 | 1904 | final = (char *) bfd_malloc (pre_len + len + suf_len); |
32e8a950 NC |
1905 | if (final != NULL) |
1906 | { | |
1907 | memcpy (final, pre, pre_len); | |
1908 | memcpy (final + pre_len, res, len); | |
1909 | memcpy (final + pre_len + len, suf, suf_len); | |
1910 | } | |
3fad56a3 AM |
1911 | free (res); |
1912 | res = final; | |
1913 | } | |
1914 | ||
1915 | return res; | |
1916 | } |