Commit | Line | Data |
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252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 | 2 | |
6f2750fe | 3 | Copyright (C) 1993-2016 Free Software Foundation, Inc. |
252b5132 | 4 | |
5e8d7549 | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
5e8d7549 NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
5e8d7549 | 10 | (at your option) any later version. |
252b5132 | 11 | |
5e8d7549 NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
5e8d7549 | 17 | You should have received a copy of the GNU General Public License |
b34976b6 | 18 | along with this program; if not, write to the Free Software |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
21 | ||
252b5132 | 22 | |
1b74d094 BW |
23 | /* |
24 | SECTION | |
252b5132 RH |
25 | ELF backends |
26 | ||
27 | BFD support for ELF formats is being worked on. | |
28 | Currently, the best supported back ends are for sparc and i386 | |
29 | (running svr4 or Solaris 2). | |
30 | ||
31 | Documentation of the internals of the support code still needs | |
32 | to be written. The code is changing quickly enough that we | |
661a3fd4 | 33 | haven't bothered yet. */ |
252b5132 | 34 | |
7ee38065 MS |
35 | /* For sparc64-cross-sparc32. */ |
36 | #define _SYSCALL32 | |
252b5132 | 37 | #include "sysdep.h" |
3db64b00 | 38 | #include "bfd.h" |
252b5132 RH |
39 | #include "bfdlink.h" |
40 | #include "libbfd.h" | |
41 | #define ARCH_SIZE 0 | |
42 | #include "elf-bfd.h" | |
e0e8c97f | 43 | #include "libiberty.h" |
ff59fc36 | 44 | #include "safe-ctype.h" |
de64ce13 | 45 | #include "elf-linux-core.h" |
252b5132 | 46 | |
8bc7f138 L |
47 | #ifdef CORE_HEADER |
48 | #include CORE_HEADER | |
49 | #endif | |
50 | ||
217aa764 | 51 | static int elf_sort_sections (const void *, const void *); |
c84fca4d | 52 | static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *); |
217aa764 | 53 | static bfd_boolean prep_headers (bfd *); |
ef10c3ac | 54 | static bfd_boolean swap_out_syms (bfd *, struct elf_strtab_hash **, int) ; |
718175fa JK |
55 | static bfd_boolean elf_read_notes (bfd *, file_ptr, bfd_size_type) ; |
56 | static bfd_boolean elf_parse_notes (bfd *abfd, char *buf, size_t size, | |
57 | file_ptr offset); | |
50b2bdb7 | 58 | |
252b5132 RH |
59 | /* Swap version information in and out. The version information is |
60 | currently size independent. If that ever changes, this code will | |
61 | need to move into elfcode.h. */ | |
62 | ||
63 | /* Swap in a Verdef structure. */ | |
64 | ||
65 | void | |
217aa764 AM |
66 | _bfd_elf_swap_verdef_in (bfd *abfd, |
67 | const Elf_External_Verdef *src, | |
68 | Elf_Internal_Verdef *dst) | |
252b5132 | 69 | { |
dc810e39 AM |
70 | dst->vd_version = H_GET_16 (abfd, src->vd_version); |
71 | dst->vd_flags = H_GET_16 (abfd, src->vd_flags); | |
72 | dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx); | |
73 | dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt); | |
74 | dst->vd_hash = H_GET_32 (abfd, src->vd_hash); | |
75 | dst->vd_aux = H_GET_32 (abfd, src->vd_aux); | |
76 | dst->vd_next = H_GET_32 (abfd, src->vd_next); | |
252b5132 RH |
77 | } |
78 | ||
79 | /* Swap out a Verdef structure. */ | |
80 | ||
81 | void | |
217aa764 AM |
82 | _bfd_elf_swap_verdef_out (bfd *abfd, |
83 | const Elf_Internal_Verdef *src, | |
84 | Elf_External_Verdef *dst) | |
252b5132 | 85 | { |
dc810e39 AM |
86 | H_PUT_16 (abfd, src->vd_version, dst->vd_version); |
87 | H_PUT_16 (abfd, src->vd_flags, dst->vd_flags); | |
88 | H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx); | |
89 | H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt); | |
90 | H_PUT_32 (abfd, src->vd_hash, dst->vd_hash); | |
91 | H_PUT_32 (abfd, src->vd_aux, dst->vd_aux); | |
92 | H_PUT_32 (abfd, src->vd_next, dst->vd_next); | |
252b5132 RH |
93 | } |
94 | ||
95 | /* Swap in a Verdaux structure. */ | |
96 | ||
97 | void | |
217aa764 AM |
98 | _bfd_elf_swap_verdaux_in (bfd *abfd, |
99 | const Elf_External_Verdaux *src, | |
100 | Elf_Internal_Verdaux *dst) | |
252b5132 | 101 | { |
dc810e39 AM |
102 | dst->vda_name = H_GET_32 (abfd, src->vda_name); |
103 | dst->vda_next = H_GET_32 (abfd, src->vda_next); | |
252b5132 RH |
104 | } |
105 | ||
106 | /* Swap out a Verdaux structure. */ | |
107 | ||
108 | void | |
217aa764 AM |
109 | _bfd_elf_swap_verdaux_out (bfd *abfd, |
110 | const Elf_Internal_Verdaux *src, | |
111 | Elf_External_Verdaux *dst) | |
252b5132 | 112 | { |
dc810e39 AM |
113 | H_PUT_32 (abfd, src->vda_name, dst->vda_name); |
114 | H_PUT_32 (abfd, src->vda_next, dst->vda_next); | |
252b5132 RH |
115 | } |
116 | ||
117 | /* Swap in a Verneed structure. */ | |
118 | ||
119 | void | |
217aa764 AM |
120 | _bfd_elf_swap_verneed_in (bfd *abfd, |
121 | const Elf_External_Verneed *src, | |
122 | Elf_Internal_Verneed *dst) | |
252b5132 | 123 | { |
dc810e39 AM |
124 | dst->vn_version = H_GET_16 (abfd, src->vn_version); |
125 | dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt); | |
126 | dst->vn_file = H_GET_32 (abfd, src->vn_file); | |
127 | dst->vn_aux = H_GET_32 (abfd, src->vn_aux); | |
128 | dst->vn_next = H_GET_32 (abfd, src->vn_next); | |
252b5132 RH |
129 | } |
130 | ||
131 | /* Swap out a Verneed structure. */ | |
132 | ||
133 | void | |
217aa764 AM |
134 | _bfd_elf_swap_verneed_out (bfd *abfd, |
135 | const Elf_Internal_Verneed *src, | |
136 | Elf_External_Verneed *dst) | |
252b5132 | 137 | { |
dc810e39 AM |
138 | H_PUT_16 (abfd, src->vn_version, dst->vn_version); |
139 | H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt); | |
140 | H_PUT_32 (abfd, src->vn_file, dst->vn_file); | |
141 | H_PUT_32 (abfd, src->vn_aux, dst->vn_aux); | |
142 | H_PUT_32 (abfd, src->vn_next, dst->vn_next); | |
252b5132 RH |
143 | } |
144 | ||
145 | /* Swap in a Vernaux structure. */ | |
146 | ||
147 | void | |
217aa764 AM |
148 | _bfd_elf_swap_vernaux_in (bfd *abfd, |
149 | const Elf_External_Vernaux *src, | |
150 | Elf_Internal_Vernaux *dst) | |
252b5132 | 151 | { |
dc810e39 AM |
152 | dst->vna_hash = H_GET_32 (abfd, src->vna_hash); |
153 | dst->vna_flags = H_GET_16 (abfd, src->vna_flags); | |
154 | dst->vna_other = H_GET_16 (abfd, src->vna_other); | |
155 | dst->vna_name = H_GET_32 (abfd, src->vna_name); | |
156 | dst->vna_next = H_GET_32 (abfd, src->vna_next); | |
252b5132 RH |
157 | } |
158 | ||
159 | /* Swap out a Vernaux structure. */ | |
160 | ||
161 | void | |
217aa764 AM |
162 | _bfd_elf_swap_vernaux_out (bfd *abfd, |
163 | const Elf_Internal_Vernaux *src, | |
164 | Elf_External_Vernaux *dst) | |
252b5132 | 165 | { |
dc810e39 AM |
166 | H_PUT_32 (abfd, src->vna_hash, dst->vna_hash); |
167 | H_PUT_16 (abfd, src->vna_flags, dst->vna_flags); | |
168 | H_PUT_16 (abfd, src->vna_other, dst->vna_other); | |
169 | H_PUT_32 (abfd, src->vna_name, dst->vna_name); | |
170 | H_PUT_32 (abfd, src->vna_next, dst->vna_next); | |
252b5132 RH |
171 | } |
172 | ||
173 | /* Swap in a Versym structure. */ | |
174 | ||
175 | void | |
217aa764 AM |
176 | _bfd_elf_swap_versym_in (bfd *abfd, |
177 | const Elf_External_Versym *src, | |
178 | Elf_Internal_Versym *dst) | |
252b5132 | 179 | { |
dc810e39 | 180 | dst->vs_vers = H_GET_16 (abfd, src->vs_vers); |
252b5132 RH |
181 | } |
182 | ||
183 | /* Swap out a Versym structure. */ | |
184 | ||
185 | void | |
217aa764 AM |
186 | _bfd_elf_swap_versym_out (bfd *abfd, |
187 | const Elf_Internal_Versym *src, | |
188 | Elf_External_Versym *dst) | |
252b5132 | 189 | { |
dc810e39 | 190 | H_PUT_16 (abfd, src->vs_vers, dst->vs_vers); |
252b5132 RH |
191 | } |
192 | ||
193 | /* Standard ELF hash function. Do not change this function; you will | |
194 | cause invalid hash tables to be generated. */ | |
3a99b017 | 195 | |
252b5132 | 196 | unsigned long |
217aa764 | 197 | bfd_elf_hash (const char *namearg) |
252b5132 | 198 | { |
3a99b017 | 199 | const unsigned char *name = (const unsigned char *) namearg; |
252b5132 RH |
200 | unsigned long h = 0; |
201 | unsigned long g; | |
202 | int ch; | |
203 | ||
204 | while ((ch = *name++) != '\0') | |
205 | { | |
206 | h = (h << 4) + ch; | |
207 | if ((g = (h & 0xf0000000)) != 0) | |
208 | { | |
209 | h ^= g >> 24; | |
210 | /* The ELF ABI says `h &= ~g', but this is equivalent in | |
211 | this case and on some machines one insn instead of two. */ | |
212 | h ^= g; | |
213 | } | |
214 | } | |
32dfa85d | 215 | return h & 0xffffffff; |
252b5132 RH |
216 | } |
217 | ||
fdc90cb4 JJ |
218 | /* DT_GNU_HASH hash function. Do not change this function; you will |
219 | cause invalid hash tables to be generated. */ | |
220 | ||
221 | unsigned long | |
222 | bfd_elf_gnu_hash (const char *namearg) | |
223 | { | |
224 | const unsigned char *name = (const unsigned char *) namearg; | |
225 | unsigned long h = 5381; | |
226 | unsigned char ch; | |
227 | ||
228 | while ((ch = *name++) != '\0') | |
229 | h = (h << 5) + h + ch; | |
230 | return h & 0xffffffff; | |
231 | } | |
232 | ||
0c8d6e5c AM |
233 | /* Create a tdata field OBJECT_SIZE bytes in length, zeroed out and with |
234 | the object_id field of an elf_obj_tdata field set to OBJECT_ID. */ | |
b34976b6 | 235 | bfd_boolean |
0c8d6e5c | 236 | bfd_elf_allocate_object (bfd *abfd, |
0ffa91dd | 237 | size_t object_size, |
4dfe6ac6 | 238 | enum elf_target_id object_id) |
252b5132 | 239 | { |
0ffa91dd NC |
240 | BFD_ASSERT (object_size >= sizeof (struct elf_obj_tdata)); |
241 | abfd->tdata.any = bfd_zalloc (abfd, object_size); | |
242 | if (abfd->tdata.any == NULL) | |
243 | return FALSE; | |
252b5132 | 244 | |
0ffa91dd | 245 | elf_object_id (abfd) = object_id; |
c0355132 AM |
246 | if (abfd->direction != read_direction) |
247 | { | |
248 | struct output_elf_obj_tdata *o = bfd_zalloc (abfd, sizeof *o); | |
249 | if (o == NULL) | |
250 | return FALSE; | |
251 | elf_tdata (abfd)->o = o; | |
252 | elf_program_header_size (abfd) = (bfd_size_type) -1; | |
253 | } | |
b34976b6 | 254 | return TRUE; |
252b5132 RH |
255 | } |
256 | ||
0ffa91dd NC |
257 | |
258 | bfd_boolean | |
ae95ffa6 | 259 | bfd_elf_make_object (bfd *abfd) |
0ffa91dd | 260 | { |
ae95ffa6 | 261 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
0ffa91dd | 262 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_obj_tdata), |
ae95ffa6 | 263 | bed->target_id); |
0ffa91dd NC |
264 | } |
265 | ||
b34976b6 | 266 | bfd_boolean |
217aa764 | 267 | bfd_elf_mkcorefile (bfd *abfd) |
252b5132 | 268 | { |
c044fabd | 269 | /* I think this can be done just like an object file. */ |
228e534f AM |
270 | if (!abfd->xvec->_bfd_set_format[(int) bfd_object] (abfd)) |
271 | return FALSE; | |
272 | elf_tdata (abfd)->core = bfd_zalloc (abfd, sizeof (*elf_tdata (abfd)->core)); | |
273 | return elf_tdata (abfd)->core != NULL; | |
252b5132 RH |
274 | } |
275 | ||
72a80a16 | 276 | static char * |
217aa764 | 277 | bfd_elf_get_str_section (bfd *abfd, unsigned int shindex) |
252b5132 RH |
278 | { |
279 | Elf_Internal_Shdr **i_shdrp; | |
f075ee0c | 280 | bfd_byte *shstrtab = NULL; |
dc810e39 AM |
281 | file_ptr offset; |
282 | bfd_size_type shstrtabsize; | |
252b5132 RH |
283 | |
284 | i_shdrp = elf_elfsections (abfd); | |
74f2e02b AM |
285 | if (i_shdrp == 0 |
286 | || shindex >= elf_numsections (abfd) | |
287 | || i_shdrp[shindex] == 0) | |
f075ee0c | 288 | return NULL; |
252b5132 | 289 | |
f075ee0c | 290 | shstrtab = i_shdrp[shindex]->contents; |
252b5132 RH |
291 | if (shstrtab == NULL) |
292 | { | |
c044fabd | 293 | /* No cached one, attempt to read, and cache what we read. */ |
252b5132 RH |
294 | offset = i_shdrp[shindex]->sh_offset; |
295 | shstrtabsize = i_shdrp[shindex]->sh_size; | |
c6c60d09 JJ |
296 | |
297 | /* Allocate and clear an extra byte at the end, to prevent crashes | |
298 | in case the string table is not terminated. */ | |
3471d59d | 299 | if (shstrtabsize + 1 <= 1 |
06614111 NC |
300 | || bfd_seek (abfd, offset, SEEK_SET) != 0 |
301 | || (shstrtab = (bfd_byte *) bfd_alloc (abfd, shstrtabsize + 1)) == NULL) | |
c6c60d09 JJ |
302 | shstrtab = NULL; |
303 | else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize) | |
304 | { | |
305 | if (bfd_get_error () != bfd_error_system_call) | |
306 | bfd_set_error (bfd_error_file_truncated); | |
06614111 | 307 | bfd_release (abfd, shstrtab); |
c6c60d09 | 308 | shstrtab = NULL; |
3471d59d CC |
309 | /* Once we've failed to read it, make sure we don't keep |
310 | trying. Otherwise, we'll keep allocating space for | |
311 | the string table over and over. */ | |
312 | i_shdrp[shindex]->sh_size = 0; | |
c6c60d09 JJ |
313 | } |
314 | else | |
315 | shstrtab[shstrtabsize] = '\0'; | |
217aa764 | 316 | i_shdrp[shindex]->contents = shstrtab; |
252b5132 | 317 | } |
f075ee0c | 318 | return (char *) shstrtab; |
252b5132 RH |
319 | } |
320 | ||
321 | char * | |
217aa764 AM |
322 | bfd_elf_string_from_elf_section (bfd *abfd, |
323 | unsigned int shindex, | |
324 | unsigned int strindex) | |
252b5132 RH |
325 | { |
326 | Elf_Internal_Shdr *hdr; | |
327 | ||
328 | if (strindex == 0) | |
329 | return ""; | |
330 | ||
74f2e02b AM |
331 | if (elf_elfsections (abfd) == NULL || shindex >= elf_numsections (abfd)) |
332 | return NULL; | |
333 | ||
252b5132 RH |
334 | hdr = elf_elfsections (abfd)[shindex]; |
335 | ||
06614111 NC |
336 | if (hdr->contents == NULL) |
337 | { | |
338 | if (hdr->sh_type != SHT_STRTAB && hdr->sh_type < SHT_LOOS) | |
339 | { | |
340 | /* PR 17512: file: f057ec89. */ | |
341 | _bfd_error_handler (_("%B: attempt to load strings from a non-string section (number %d)"), | |
342 | abfd, shindex); | |
343 | return NULL; | |
344 | } | |
b1fa9dd6 | 345 | |
06614111 NC |
346 | if (bfd_elf_get_str_section (abfd, shindex) == NULL) |
347 | return NULL; | |
348 | } | |
252b5132 RH |
349 | |
350 | if (strindex >= hdr->sh_size) | |
351 | { | |
1b3a8575 | 352 | unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx; |
252b5132 | 353 | (*_bfd_error_handler) |
d003868e AM |
354 | (_("%B: invalid string offset %u >= %lu for section `%s'"), |
355 | abfd, strindex, (unsigned long) hdr->sh_size, | |
1b3a8575 | 356 | (shindex == shstrndx && strindex == hdr->sh_name |
252b5132 | 357 | ? ".shstrtab" |
1b3a8575 | 358 | : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name))); |
45b222d6 | 359 | return NULL; |
252b5132 RH |
360 | } |
361 | ||
362 | return ((char *) hdr->contents) + strindex; | |
363 | } | |
364 | ||
6cdc0ccc AM |
365 | /* Read and convert symbols to internal format. |
366 | SYMCOUNT specifies the number of symbols to read, starting from | |
367 | symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF | |
368 | are non-NULL, they are used to store the internal symbols, external | |
b7c368d0 NC |
369 | symbols, and symbol section index extensions, respectively. |
370 | Returns a pointer to the internal symbol buffer (malloced if necessary) | |
371 | or NULL if there were no symbols or some kind of problem. */ | |
6cdc0ccc AM |
372 | |
373 | Elf_Internal_Sym * | |
217aa764 AM |
374 | bfd_elf_get_elf_syms (bfd *ibfd, |
375 | Elf_Internal_Shdr *symtab_hdr, | |
376 | size_t symcount, | |
377 | size_t symoffset, | |
378 | Elf_Internal_Sym *intsym_buf, | |
379 | void *extsym_buf, | |
380 | Elf_External_Sym_Shndx *extshndx_buf) | |
6cdc0ccc AM |
381 | { |
382 | Elf_Internal_Shdr *shndx_hdr; | |
217aa764 | 383 | void *alloc_ext; |
df622259 | 384 | const bfd_byte *esym; |
6cdc0ccc AM |
385 | Elf_External_Sym_Shndx *alloc_extshndx; |
386 | Elf_External_Sym_Shndx *shndx; | |
4dd07732 | 387 | Elf_Internal_Sym *alloc_intsym; |
6cdc0ccc AM |
388 | Elf_Internal_Sym *isym; |
389 | Elf_Internal_Sym *isymend; | |
9c5bfbb7 | 390 | const struct elf_backend_data *bed; |
6cdc0ccc AM |
391 | size_t extsym_size; |
392 | bfd_size_type amt; | |
393 | file_ptr pos; | |
394 | ||
e44a2c9c AM |
395 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
396 | abort (); | |
397 | ||
6cdc0ccc AM |
398 | if (symcount == 0) |
399 | return intsym_buf; | |
400 | ||
401 | /* Normal syms might have section extension entries. */ | |
402 | shndx_hdr = NULL; | |
6a40cf0c NC |
403 | if (elf_symtab_shndx_list (ibfd) != NULL) |
404 | { | |
405 | elf_section_list * entry; | |
406 | Elf_Internal_Shdr **sections = elf_elfsections (ibfd); | |
407 | ||
408 | /* Find an index section that is linked to this symtab section. */ | |
409 | for (entry = elf_symtab_shndx_list (ibfd); entry != NULL; entry = entry->next) | |
410 | if (sections[entry->hdr.sh_link] == symtab_hdr) | |
411 | { | |
412 | shndx_hdr = & entry->hdr; | |
413 | break; | |
414 | }; | |
415 | ||
416 | if (shndx_hdr == NULL) | |
417 | { | |
418 | if (symtab_hdr == & elf_symtab_hdr (ibfd)) | |
419 | /* Not really accurate, but this was how the old code used to work. */ | |
420 | shndx_hdr = & elf_symtab_shndx_list (ibfd)->hdr; | |
421 | /* Otherwise we do nothing. The assumption is that | |
422 | the index table will not be needed. */ | |
423 | } | |
424 | } | |
6cdc0ccc AM |
425 | |
426 | /* Read the symbols. */ | |
427 | alloc_ext = NULL; | |
428 | alloc_extshndx = NULL; | |
4dd07732 | 429 | alloc_intsym = NULL; |
6cdc0ccc AM |
430 | bed = get_elf_backend_data (ibfd); |
431 | extsym_size = bed->s->sizeof_sym; | |
432 | amt = symcount * extsym_size; | |
433 | pos = symtab_hdr->sh_offset + symoffset * extsym_size; | |
434 | if (extsym_buf == NULL) | |
435 | { | |
d0fb9a8d | 436 | alloc_ext = bfd_malloc2 (symcount, extsym_size); |
6cdc0ccc AM |
437 | extsym_buf = alloc_ext; |
438 | } | |
439 | if (extsym_buf == NULL | |
440 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
441 | || bfd_bread (extsym_buf, amt, ibfd) != amt) | |
442 | { | |
443 | intsym_buf = NULL; | |
444 | goto out; | |
445 | } | |
446 | ||
447 | if (shndx_hdr == NULL || shndx_hdr->sh_size == 0) | |
448 | extshndx_buf = NULL; | |
449 | else | |
450 | { | |
451 | amt = symcount * sizeof (Elf_External_Sym_Shndx); | |
452 | pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx); | |
453 | if (extshndx_buf == NULL) | |
454 | { | |
a50b1753 NC |
455 | alloc_extshndx = (Elf_External_Sym_Shndx *) |
456 | bfd_malloc2 (symcount, sizeof (Elf_External_Sym_Shndx)); | |
6cdc0ccc AM |
457 | extshndx_buf = alloc_extshndx; |
458 | } | |
459 | if (extshndx_buf == NULL | |
460 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
461 | || bfd_bread (extshndx_buf, amt, ibfd) != amt) | |
462 | { | |
463 | intsym_buf = NULL; | |
464 | goto out; | |
465 | } | |
466 | } | |
467 | ||
468 | if (intsym_buf == NULL) | |
469 | { | |
a50b1753 NC |
470 | alloc_intsym = (Elf_Internal_Sym *) |
471 | bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym)); | |
4dd07732 | 472 | intsym_buf = alloc_intsym; |
6cdc0ccc AM |
473 | if (intsym_buf == NULL) |
474 | goto out; | |
475 | } | |
476 | ||
477 | /* Convert the symbols to internal form. */ | |
478 | isymend = intsym_buf + symcount; | |
a50b1753 NC |
479 | for (esym = (const bfd_byte *) extsym_buf, isym = intsym_buf, |
480 | shndx = extshndx_buf; | |
6cdc0ccc AM |
481 | isym < isymend; |
482 | esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL) | |
8384fb8f AM |
483 | if (!(*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym)) |
484 | { | |
485 | symoffset += (esym - (bfd_byte *) extsym_buf) / extsym_size; | |
486 | (*_bfd_error_handler) (_("%B symbol number %lu references " | |
487 | "nonexistent SHT_SYMTAB_SHNDX section"), | |
488 | ibfd, (unsigned long) symoffset); | |
4dd07732 AM |
489 | if (alloc_intsym != NULL) |
490 | free (alloc_intsym); | |
8384fb8f AM |
491 | intsym_buf = NULL; |
492 | goto out; | |
493 | } | |
6cdc0ccc AM |
494 | |
495 | out: | |
496 | if (alloc_ext != NULL) | |
497 | free (alloc_ext); | |
498 | if (alloc_extshndx != NULL) | |
499 | free (alloc_extshndx); | |
500 | ||
501 | return intsym_buf; | |
502 | } | |
503 | ||
5cab59f6 AM |
504 | /* Look up a symbol name. */ |
505 | const char * | |
be8dd2ca AM |
506 | bfd_elf_sym_name (bfd *abfd, |
507 | Elf_Internal_Shdr *symtab_hdr, | |
26c61ae5 L |
508 | Elf_Internal_Sym *isym, |
509 | asection *sym_sec) | |
5cab59f6 | 510 | { |
26c61ae5 | 511 | const char *name; |
5cab59f6 | 512 | unsigned int iname = isym->st_name; |
be8dd2ca | 513 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 514 | |
138f35cc JJ |
515 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
516 | /* Check for a bogus st_shndx to avoid crashing. */ | |
4fbb74a6 | 517 | && isym->st_shndx < elf_numsections (abfd)) |
5cab59f6 AM |
518 | { |
519 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
520 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
521 | } | |
522 | ||
26c61ae5 L |
523 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
524 | if (name == NULL) | |
525 | name = "(null)"; | |
526 | else if (sym_sec && *name == '\0') | |
527 | name = bfd_section_name (abfd, sym_sec); | |
528 | ||
529 | return name; | |
5cab59f6 AM |
530 | } |
531 | ||
dbb410c3 AM |
532 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
533 | sections. The first element is the flags, the rest are section | |
534 | pointers. */ | |
535 | ||
536 | typedef union elf_internal_group { | |
537 | Elf_Internal_Shdr *shdr; | |
538 | unsigned int flags; | |
539 | } Elf_Internal_Group; | |
540 | ||
b885599b AM |
541 | /* Return the name of the group signature symbol. Why isn't the |
542 | signature just a string? */ | |
543 | ||
544 | static const char * | |
217aa764 | 545 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 546 | { |
9dce4196 | 547 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
548 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
549 | Elf_External_Sym_Shndx eshndx; | |
550 | Elf_Internal_Sym isym; | |
b885599b | 551 | |
13792e9d L |
552 | /* First we need to ensure the symbol table is available. Make sure |
553 | that it is a symbol table section. */ | |
4fbb74a6 AM |
554 | if (ghdr->sh_link >= elf_numsections (abfd)) |
555 | return NULL; | |
13792e9d L |
556 | hdr = elf_elfsections (abfd) [ghdr->sh_link]; |
557 | if (hdr->sh_type != SHT_SYMTAB | |
558 | || ! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
b885599b AM |
559 | return NULL; |
560 | ||
9dce4196 AM |
561 | /* Go read the symbol. */ |
562 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
563 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
564 | &isym, esym, &eshndx) == NULL) | |
b885599b | 565 | return NULL; |
9dce4196 | 566 | |
26c61ae5 | 567 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
568 | } |
569 | ||
dbb410c3 AM |
570 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
571 | ||
b34976b6 | 572 | static bfd_boolean |
217aa764 | 573 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
574 | { |
575 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
576 | ||
577 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
578 | is set to -1 if there are no SHT_GROUP sections. */ | |
579 | if (num_group == 0) | |
580 | { | |
581 | unsigned int i, shnum; | |
582 | ||
583 | /* First count the number of groups. If we have a SHT_GROUP | |
584 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 585 | shnum = elf_numsections (abfd); |
dbb410c3 | 586 | num_group = 0; |
08a40648 | 587 | |
44534af3 | 588 | #define IS_VALID_GROUP_SECTION_HEADER(shdr, minsize) \ |
1783205a | 589 | ( (shdr)->sh_type == SHT_GROUP \ |
44534af3 | 590 | && (shdr)->sh_size >= minsize \ |
1783205a NC |
591 | && (shdr)->sh_entsize == GRP_ENTRY_SIZE \ |
592 | && ((shdr)->sh_size % GRP_ENTRY_SIZE) == 0) | |
08a40648 | 593 | |
dbb410c3 AM |
594 | for (i = 0; i < shnum; i++) |
595 | { | |
596 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a | 597 | |
44534af3 | 598 | if (IS_VALID_GROUP_SECTION_HEADER (shdr, 2 * GRP_ENTRY_SIZE)) |
dbb410c3 AM |
599 | num_group += 1; |
600 | } | |
601 | ||
602 | if (num_group == 0) | |
20dbb49d L |
603 | { |
604 | num_group = (unsigned) -1; | |
605 | elf_tdata (abfd)->num_group = num_group; | |
606 | } | |
607 | else | |
dbb410c3 AM |
608 | { |
609 | /* We keep a list of elf section headers for group sections, | |
610 | so we can find them quickly. */ | |
20dbb49d | 611 | bfd_size_type amt; |
d0fb9a8d | 612 | |
20dbb49d | 613 | elf_tdata (abfd)->num_group = num_group; |
a50b1753 NC |
614 | elf_tdata (abfd)->group_sect_ptr = (Elf_Internal_Shdr **) |
615 | bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *)); | |
dbb410c3 | 616 | if (elf_tdata (abfd)->group_sect_ptr == NULL) |
b34976b6 | 617 | return FALSE; |
dbb410c3 AM |
618 | |
619 | num_group = 0; | |
620 | for (i = 0; i < shnum; i++) | |
621 | { | |
622 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a | 623 | |
44534af3 | 624 | if (IS_VALID_GROUP_SECTION_HEADER (shdr, 2 * GRP_ENTRY_SIZE)) |
dbb410c3 | 625 | { |
973ffd63 | 626 | unsigned char *src; |
dbb410c3 AM |
627 | Elf_Internal_Group *dest; |
628 | ||
629 | /* Add to list of sections. */ | |
630 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
631 | num_group += 1; | |
632 | ||
633 | /* Read the raw contents. */ | |
634 | BFD_ASSERT (sizeof (*dest) >= 4); | |
635 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
a50b1753 NC |
636 | shdr->contents = (unsigned char *) |
637 | bfd_alloc2 (abfd, shdr->sh_size, sizeof (*dest) / 4); | |
1783205a NC |
638 | /* PR binutils/4110: Handle corrupt group headers. */ |
639 | if (shdr->contents == NULL) | |
640 | { | |
641 | _bfd_error_handler | |
493a3386 | 642 | (_("%B: corrupt size field in group section header: 0x%lx"), abfd, shdr->sh_size); |
1783205a | 643 | bfd_set_error (bfd_error_bad_value); |
493a3386 NC |
644 | -- num_group; |
645 | continue; | |
1783205a NC |
646 | } |
647 | ||
648 | memset (shdr->contents, 0, amt); | |
649 | ||
650 | if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
dbb410c3 AM |
651 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) |
652 | != shdr->sh_size)) | |
493a3386 NC |
653 | { |
654 | _bfd_error_handler | |
655 | (_("%B: invalid size field in group section header: 0x%lx"), abfd, shdr->sh_size); | |
656 | bfd_set_error (bfd_error_bad_value); | |
657 | -- num_group; | |
658 | /* PR 17510: If the group contents are even partially | |
659 | corrupt, do not allow any of the contents to be used. */ | |
660 | memset (shdr->contents, 0, amt); | |
661 | continue; | |
662 | } | |
708d7d0d | 663 | |
dbb410c3 AM |
664 | /* Translate raw contents, a flag word followed by an |
665 | array of elf section indices all in target byte order, | |
666 | to the flag word followed by an array of elf section | |
667 | pointers. */ | |
668 | src = shdr->contents + shdr->sh_size; | |
669 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
06614111 | 670 | |
dbb410c3 AM |
671 | while (1) |
672 | { | |
673 | unsigned int idx; | |
674 | ||
675 | src -= 4; | |
676 | --dest; | |
677 | idx = H_GET_32 (abfd, src); | |
678 | if (src == shdr->contents) | |
679 | { | |
680 | dest->flags = idx; | |
b885599b AM |
681 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
682 | shdr->bfd_section->flags | |
683 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
684 | break; |
685 | } | |
686 | if (idx >= shnum) | |
687 | { | |
688 | ((*_bfd_error_handler) | |
d003868e | 689 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
690 | idx = 0; |
691 | } | |
692 | dest->shdr = elf_elfsections (abfd)[idx]; | |
693 | } | |
694 | } | |
695 | } | |
493a3386 NC |
696 | |
697 | /* PR 17510: Corrupt binaries might contain invalid groups. */ | |
698 | if (num_group != (unsigned) elf_tdata (abfd)->num_group) | |
699 | { | |
700 | elf_tdata (abfd)->num_group = num_group; | |
701 | ||
702 | /* If all groups are invalid then fail. */ | |
703 | if (num_group == 0) | |
704 | { | |
705 | elf_tdata (abfd)->group_sect_ptr = NULL; | |
706 | elf_tdata (abfd)->num_group = num_group = -1; | |
707 | (*_bfd_error_handler) (_("%B: no valid group sections found"), abfd); | |
708 | bfd_set_error (bfd_error_bad_value); | |
709 | } | |
710 | } | |
dbb410c3 AM |
711 | } |
712 | } | |
713 | ||
714 | if (num_group != (unsigned) -1) | |
715 | { | |
716 | unsigned int i; | |
717 | ||
718 | for (i = 0; i < num_group; i++) | |
719 | { | |
720 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
721 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
722 | unsigned int n_elt = shdr->sh_size / 4; | |
723 | ||
724 | /* Look through this group's sections to see if current | |
725 | section is a member. */ | |
726 | while (--n_elt != 0) | |
727 | if ((++idx)->shdr == hdr) | |
728 | { | |
e0e8c97f | 729 | asection *s = NULL; |
dbb410c3 AM |
730 | |
731 | /* We are a member of this group. Go looking through | |
732 | other members to see if any others are linked via | |
733 | next_in_group. */ | |
734 | idx = (Elf_Internal_Group *) shdr->contents; | |
735 | n_elt = shdr->sh_size / 4; | |
736 | while (--n_elt != 0) | |
737 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 738 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
739 | break; |
740 | if (n_elt != 0) | |
741 | { | |
dbb410c3 AM |
742 | /* Snarf the group name from other member, and |
743 | insert current section in circular list. */ | |
945906ff AM |
744 | elf_group_name (newsect) = elf_group_name (s); |
745 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
746 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
747 | } |
748 | else | |
749 | { | |
dbb410c3 AM |
750 | const char *gname; |
751 | ||
b885599b AM |
752 | gname = group_signature (abfd, shdr); |
753 | if (gname == NULL) | |
b34976b6 | 754 | return FALSE; |
945906ff | 755 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
756 | |
757 | /* Start a circular list with one element. */ | |
945906ff | 758 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 759 | } |
b885599b | 760 | |
9dce4196 AM |
761 | /* If the group section has been created, point to the |
762 | new member. */ | |
dbb410c3 | 763 | if (shdr->bfd_section != NULL) |
945906ff | 764 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 765 | |
dbb410c3 AM |
766 | i = num_group - 1; |
767 | break; | |
768 | } | |
769 | } | |
770 | } | |
771 | ||
945906ff | 772 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 773 | { |
d003868e AM |
774 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
775 | abfd, newsect); | |
493a3386 | 776 | return FALSE; |
dbb410c3 | 777 | } |
b34976b6 | 778 | return TRUE; |
dbb410c3 AM |
779 | } |
780 | ||
3d7f7666 | 781 | bfd_boolean |
dd863624 | 782 | _bfd_elf_setup_sections (bfd *abfd) |
3d7f7666 L |
783 | { |
784 | unsigned int i; | |
785 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
786 | bfd_boolean result = TRUE; | |
dd863624 L |
787 | asection *s; |
788 | ||
789 | /* Process SHF_LINK_ORDER. */ | |
790 | for (s = abfd->sections; s != NULL; s = s->next) | |
791 | { | |
792 | Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr; | |
793 | if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0) | |
794 | { | |
795 | unsigned int elfsec = this_hdr->sh_link; | |
796 | /* FIXME: The old Intel compiler and old strip/objcopy may | |
797 | not set the sh_link or sh_info fields. Hence we could | |
798 | get the situation where elfsec is 0. */ | |
799 | if (elfsec == 0) | |
800 | { | |
4fbb74a6 | 801 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dd863624 L |
802 | if (bed->link_order_error_handler) |
803 | bed->link_order_error_handler | |
804 | (_("%B: warning: sh_link not set for section `%A'"), | |
805 | abfd, s); | |
806 | } | |
807 | else | |
808 | { | |
91d6fa6a | 809 | asection *linksec = NULL; |
25bbc984 | 810 | |
4fbb74a6 AM |
811 | if (elfsec < elf_numsections (abfd)) |
812 | { | |
813 | this_hdr = elf_elfsections (abfd)[elfsec]; | |
91d6fa6a | 814 | linksec = this_hdr->bfd_section; |
4fbb74a6 | 815 | } |
25bbc984 L |
816 | |
817 | /* PR 1991, 2008: | |
818 | Some strip/objcopy may leave an incorrect value in | |
819 | sh_link. We don't want to proceed. */ | |
91d6fa6a | 820 | if (linksec == NULL) |
25bbc984 L |
821 | { |
822 | (*_bfd_error_handler) | |
823 | (_("%B: sh_link [%d] in section `%A' is incorrect"), | |
824 | s->owner, s, elfsec); | |
825 | result = FALSE; | |
826 | } | |
827 | ||
91d6fa6a | 828 | elf_linked_to_section (s) = linksec; |
dd863624 L |
829 | } |
830 | } | |
831 | } | |
3d7f7666 | 832 | |
dd863624 | 833 | /* Process section groups. */ |
3d7f7666 L |
834 | if (num_group == (unsigned) -1) |
835 | return result; | |
836 | ||
837 | for (i = 0; i < num_group; i++) | |
838 | { | |
839 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
4b0e8a5f NC |
840 | Elf_Internal_Group *idx; |
841 | unsigned int n_elt; | |
3d7f7666 | 842 | |
4b0e8a5f NC |
843 | /* PR binutils/18758: Beware of corrupt binaries with invalid group data. */ |
844 | if (shdr == NULL || shdr->bfd_section == NULL || shdr->contents == NULL) | |
845 | { | |
846 | (*_bfd_error_handler) | |
847 | (_("%B: section group entry number %u is corrupt"), | |
848 | abfd, i); | |
849 | result = FALSE; | |
850 | continue; | |
851 | } | |
852 | ||
853 | idx = (Elf_Internal_Group *) shdr->contents; | |
854 | n_elt = shdr->sh_size / 4; | |
1b786873 | 855 | |
3d7f7666 L |
856 | while (--n_elt != 0) |
857 | if ((++idx)->shdr->bfd_section) | |
858 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
859 | else if (idx->shdr->sh_type == SHT_RELA | |
860 | || idx->shdr->sh_type == SHT_REL) | |
861 | /* We won't include relocation sections in section groups in | |
862 | output object files. We adjust the group section size here | |
863 | so that relocatable link will work correctly when | |
864 | relocation sections are in section group in input object | |
865 | files. */ | |
866 | shdr->bfd_section->size -= 4; | |
867 | else | |
868 | { | |
869 | /* There are some unknown sections in the group. */ | |
870 | (*_bfd_error_handler) | |
d003868e AM |
871 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
872 | abfd, | |
3d7f7666 | 873 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
874 | bfd_elf_string_from_elf_section (abfd, |
875 | (elf_elfheader (abfd) | |
876 | ->e_shstrndx), | |
877 | idx->shdr->sh_name), | |
3d7f7666 L |
878 | shdr->bfd_section->name); |
879 | result = FALSE; | |
880 | } | |
881 | } | |
882 | return result; | |
883 | } | |
884 | ||
72adc230 AM |
885 | bfd_boolean |
886 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
887 | { | |
888 | return elf_next_in_group (sec) != NULL; | |
889 | } | |
890 | ||
f6fe1ccd L |
891 | static char * |
892 | convert_debug_to_zdebug (bfd *abfd, const char *name) | |
893 | { | |
894 | unsigned int len = strlen (name); | |
895 | char *new_name = bfd_alloc (abfd, len + 2); | |
896 | if (new_name == NULL) | |
897 | return NULL; | |
898 | new_name[0] = '.'; | |
899 | new_name[1] = 'z'; | |
900 | memcpy (new_name + 2, name + 1, len); | |
901 | return new_name; | |
902 | } | |
903 | ||
904 | static char * | |
905 | convert_zdebug_to_debug (bfd *abfd, const char *name) | |
906 | { | |
907 | unsigned int len = strlen (name); | |
908 | char *new_name = bfd_alloc (abfd, len); | |
909 | if (new_name == NULL) | |
910 | return NULL; | |
911 | new_name[0] = '.'; | |
912 | memcpy (new_name + 1, name + 2, len - 1); | |
913 | return new_name; | |
914 | } | |
915 | ||
252b5132 RH |
916 | /* Make a BFD section from an ELF section. We store a pointer to the |
917 | BFD section in the bfd_section field of the header. */ | |
918 | ||
b34976b6 | 919 | bfd_boolean |
217aa764 AM |
920 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
921 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
922 | const char *name, |
923 | int shindex) | |
252b5132 RH |
924 | { |
925 | asection *newsect; | |
926 | flagword flags; | |
9c5bfbb7 | 927 | const struct elf_backend_data *bed; |
252b5132 RH |
928 | |
929 | if (hdr->bfd_section != NULL) | |
4e011fb5 | 930 | return TRUE; |
252b5132 RH |
931 | |
932 | newsect = bfd_make_section_anyway (abfd, name); | |
933 | if (newsect == NULL) | |
b34976b6 | 934 | return FALSE; |
252b5132 | 935 | |
1829f4b2 AM |
936 | hdr->bfd_section = newsect; |
937 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 938 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 939 | |
2f89ff8d L |
940 | /* Always use the real type/flags. */ |
941 | elf_section_type (newsect) = hdr->sh_type; | |
942 | elf_section_flags (newsect) = hdr->sh_flags; | |
943 | ||
252b5132 RH |
944 | newsect->filepos = hdr->sh_offset; |
945 | ||
946 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
947 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
948 | || ! bfd_set_section_alignment (abfd, newsect, | |
72de5009 | 949 | bfd_log2 (hdr->sh_addralign))) |
b34976b6 | 950 | return FALSE; |
252b5132 RH |
951 | |
952 | flags = SEC_NO_FLAGS; | |
953 | if (hdr->sh_type != SHT_NOBITS) | |
954 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 955 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 956 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
957 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
958 | { | |
959 | flags |= SEC_ALLOC; | |
960 | if (hdr->sh_type != SHT_NOBITS) | |
961 | flags |= SEC_LOAD; | |
962 | } | |
963 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
964 | flags |= SEC_READONLY; | |
965 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
966 | flags |= SEC_CODE; | |
967 | else if ((flags & SEC_LOAD) != 0) | |
968 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
969 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
970 | { | |
971 | flags |= SEC_MERGE; | |
972 | newsect->entsize = hdr->sh_entsize; | |
f5fa8ca2 | 973 | } |
84865015 NC |
974 | if ((hdr->sh_flags & SHF_STRINGS) != 0) |
975 | flags |= SEC_STRINGS; | |
dbb410c3 AM |
976 | if (hdr->sh_flags & SHF_GROUP) |
977 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 978 | return FALSE; |
13ae64f3 JJ |
979 | if ((hdr->sh_flags & SHF_TLS) != 0) |
980 | flags |= SEC_THREAD_LOCAL; | |
18ae9cc1 L |
981 | if ((hdr->sh_flags & SHF_EXCLUDE) != 0) |
982 | flags |= SEC_EXCLUDE; | |
252b5132 | 983 | |
3d2b39cf | 984 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 985 | { |
3d2b39cf L |
986 | /* The debugging sections appear to be recognized only by name, |
987 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
3d2b39cf L |
988 | if (name [0] == '.') |
989 | { | |
f073ced3 AM |
990 | const char *p; |
991 | int n; | |
992 | if (name[1] == 'd') | |
993 | p = ".debug", n = 6; | |
994 | else if (name[1] == 'g' && name[2] == 'n') | |
995 | p = ".gnu.linkonce.wi.", n = 17; | |
996 | else if (name[1] == 'g' && name[2] == 'd') | |
997 | p = ".gdb_index", n = 11; /* yes we really do mean 11. */ | |
998 | else if (name[1] == 'l') | |
999 | p = ".line", n = 5; | |
1000 | else if (name[1] == 's') | |
1001 | p = ".stab", n = 5; | |
1002 | else if (name[1] == 'z') | |
1003 | p = ".zdebug", n = 7; | |
1004 | else | |
1005 | p = NULL, n = 0; | |
1006 | if (p != NULL && strncmp (name, p, n) == 0) | |
3d2b39cf L |
1007 | flags |= SEC_DEBUGGING; |
1008 | } | |
1009 | } | |
252b5132 RH |
1010 | |
1011 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
1012 | only link a single copy of the section. This is used to support | |
1013 | g++. g++ will emit each template expansion in its own section. | |
1014 | The symbols will be defined as weak, so that multiple definitions | |
1015 | are permitted. The GNU linker extension is to actually discard | |
1016 | all but one of the sections. */ | |
0112cd26 | 1017 | if (CONST_STRNEQ (name, ".gnu.linkonce") |
b885599b | 1018 | && elf_next_in_group (newsect) == NULL) |
252b5132 RH |
1019 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
1020 | ||
fa152c49 JW |
1021 | bed = get_elf_backend_data (abfd); |
1022 | if (bed->elf_backend_section_flags) | |
1023 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 1024 | return FALSE; |
fa152c49 | 1025 | |
252b5132 | 1026 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 1027 | return FALSE; |
252b5132 | 1028 | |
718175fa JK |
1029 | /* We do not parse the PT_NOTE segments as we are interested even in the |
1030 | separate debug info files which may have the segments offsets corrupted. | |
1031 | PT_NOTEs from the core files are currently not parsed using BFD. */ | |
1032 | if (hdr->sh_type == SHT_NOTE) | |
1033 | { | |
baea7ef1 | 1034 | bfd_byte *contents; |
718175fa | 1035 | |
baea7ef1 | 1036 | if (!bfd_malloc_and_get_section (abfd, newsect, &contents)) |
718175fa JK |
1037 | return FALSE; |
1038 | ||
baea7ef1 | 1039 | elf_parse_notes (abfd, (char *) contents, hdr->sh_size, -1); |
718175fa JK |
1040 | free (contents); |
1041 | } | |
1042 | ||
252b5132 RH |
1043 | if ((flags & SEC_ALLOC) != 0) |
1044 | { | |
1045 | Elf_Internal_Phdr *phdr; | |
6ffd7900 AM |
1046 | unsigned int i, nload; |
1047 | ||
1048 | /* Some ELF linkers produce binaries with all the program header | |
1049 | p_paddr fields zero. If we have such a binary with more than | |
1050 | one PT_LOAD header, then leave the section lma equal to vma | |
1051 | so that we don't create sections with overlapping lma. */ | |
1052 | phdr = elf_tdata (abfd)->phdr; | |
1053 | for (nload = 0, i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
1054 | if (phdr->p_paddr != 0) | |
1055 | break; | |
1056 | else if (phdr->p_type == PT_LOAD && phdr->p_memsz != 0) | |
1057 | ++nload; | |
1058 | if (i >= elf_elfheader (abfd)->e_phnum && nload > 1) | |
1059 | return TRUE; | |
252b5132 | 1060 | |
252b5132 RH |
1061 | phdr = elf_tdata (abfd)->phdr; |
1062 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
1063 | { | |
86b2281f AM |
1064 | if (((phdr->p_type == PT_LOAD |
1065 | && (hdr->sh_flags & SHF_TLS) == 0) | |
1066 | || phdr->p_type == PT_TLS) | |
9a83a553 | 1067 | && ELF_SECTION_IN_SEGMENT (hdr, phdr)) |
252b5132 | 1068 | { |
88967714 AM |
1069 | if ((flags & SEC_LOAD) == 0) |
1070 | newsect->lma = (phdr->p_paddr | |
1071 | + hdr->sh_addr - phdr->p_vaddr); | |
1072 | else | |
1073 | /* We used to use the same adjustment for SEC_LOAD | |
1074 | sections, but that doesn't work if the segment | |
1075 | is packed with code from multiple VMAs. | |
1076 | Instead we calculate the section LMA based on | |
1077 | the segment LMA. It is assumed that the | |
1078 | segment will contain sections with contiguous | |
1079 | LMAs, even if the VMAs are not. */ | |
1080 | newsect->lma = (phdr->p_paddr | |
1081 | + hdr->sh_offset - phdr->p_offset); | |
1082 | ||
1083 | /* With contiguous segments, we can't tell from file | |
1084 | offsets whether a section with zero size should | |
1085 | be placed at the end of one segment or the | |
1086 | beginning of the next. Decide based on vaddr. */ | |
1087 | if (hdr->sh_addr >= phdr->p_vaddr | |
1088 | && (hdr->sh_addr + hdr->sh_size | |
1089 | <= phdr->p_vaddr + phdr->p_memsz)) | |
1090 | break; | |
252b5132 RH |
1091 | } |
1092 | } | |
1093 | } | |
1094 | ||
4a114e3e L |
1095 | /* Compress/decompress DWARF debug sections with names: .debug_* and |
1096 | .zdebug_*, after the section flags is set. */ | |
1097 | if ((flags & SEC_DEBUGGING) | |
1098 | && ((name[1] == 'd' && name[6] == '_') | |
1099 | || (name[1] == 'z' && name[7] == '_'))) | |
1100 | { | |
1101 | enum { nothing, compress, decompress } action = nothing; | |
151411f8 | 1102 | int compression_header_size; |
dab394de | 1103 | bfd_size_type uncompressed_size; |
151411f8 L |
1104 | bfd_boolean compressed |
1105 | = bfd_is_section_compressed_with_header (abfd, newsect, | |
dab394de L |
1106 | &compression_header_size, |
1107 | &uncompressed_size); | |
4a114e3e | 1108 | |
151411f8 | 1109 | if (compressed) |
4a114e3e L |
1110 | { |
1111 | /* Compressed section. Check if we should decompress. */ | |
1112 | if ((abfd->flags & BFD_DECOMPRESS)) | |
1113 | action = decompress; | |
1114 | } | |
151411f8 L |
1115 | |
1116 | /* Compress the uncompressed section or convert from/to .zdebug* | |
1117 | section. Check if we should compress. */ | |
1118 | if (action == nothing) | |
4a114e3e | 1119 | { |
151411f8 L |
1120 | if (newsect->size != 0 |
1121 | && (abfd->flags & BFD_COMPRESS) | |
1122 | && compression_header_size >= 0 | |
dab394de | 1123 | && uncompressed_size > 0 |
151411f8 L |
1124 | && (!compressed |
1125 | || ((compression_header_size > 0) | |
1126 | != ((abfd->flags & BFD_COMPRESS_GABI) != 0)))) | |
4a114e3e | 1127 | action = compress; |
151411f8 L |
1128 | else |
1129 | return TRUE; | |
4a114e3e L |
1130 | } |
1131 | ||
151411f8 | 1132 | if (action == compress) |
4a114e3e | 1133 | { |
4a114e3e L |
1134 | if (!bfd_init_section_compress_status (abfd, newsect)) |
1135 | { | |
1136 | (*_bfd_error_handler) | |
bc823199 | 1137 | (_("%B: unable to initialize compress status for section %s"), |
4a114e3e L |
1138 | abfd, name); |
1139 | return FALSE; | |
1140 | } | |
151411f8 L |
1141 | } |
1142 | else | |
1143 | { | |
4a114e3e L |
1144 | if (!bfd_init_section_decompress_status (abfd, newsect)) |
1145 | { | |
1146 | (*_bfd_error_handler) | |
bc823199 | 1147 | (_("%B: unable to initialize decompress status for section %s"), |
4a114e3e L |
1148 | abfd, name); |
1149 | return FALSE; | |
1150 | } | |
151411f8 L |
1151 | } |
1152 | ||
f6fe1ccd | 1153 | if (abfd->is_linker_input) |
151411f8 | 1154 | { |
f6fe1ccd L |
1155 | if (name[1] == 'z' |
1156 | && (action == decompress | |
1157 | || (action == compress | |
1158 | && (abfd->flags & BFD_COMPRESS_GABI) != 0))) | |
4e011fb5 | 1159 | { |
f6fe1ccd L |
1160 | /* Convert section name from .zdebug_* to .debug_* so |
1161 | that linker will consider this section as a debug | |
1162 | section. */ | |
1163 | char *new_name = convert_zdebug_to_debug (abfd, name); | |
151411f8 L |
1164 | if (new_name == NULL) |
1165 | return FALSE; | |
f6fe1ccd | 1166 | bfd_rename_section (abfd, newsect, new_name); |
151411f8 | 1167 | } |
4a114e3e | 1168 | } |
f6fe1ccd L |
1169 | else |
1170 | /* For objdump, don't rename the section. For objcopy, delay | |
1171 | section rename to elf_fake_sections. */ | |
1172 | newsect->flags |= SEC_ELF_RENAME; | |
4a114e3e L |
1173 | } |
1174 | ||
b34976b6 | 1175 | return TRUE; |
252b5132 RH |
1176 | } |
1177 | ||
84865015 NC |
1178 | const char *const bfd_elf_section_type_names[] = |
1179 | { | |
252b5132 RH |
1180 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", |
1181 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
1182 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
1183 | }; | |
1184 | ||
1049f94e | 1185 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
1186 | output, and the reloc is against an external symbol, and nothing |
1187 | has given us any additional addend, the resulting reloc will also | |
1188 | be against the same symbol. In such a case, we don't want to | |
1189 | change anything about the way the reloc is handled, since it will | |
1190 | all be done at final link time. Rather than put special case code | |
1191 | into bfd_perform_relocation, all the reloc types use this howto | |
1192 | function. It just short circuits the reloc if producing | |
1049f94e | 1193 | relocatable output against an external symbol. */ |
252b5132 | 1194 | |
252b5132 | 1195 | bfd_reloc_status_type |
217aa764 AM |
1196 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
1197 | arelent *reloc_entry, | |
1198 | asymbol *symbol, | |
1199 | void *data ATTRIBUTE_UNUSED, | |
1200 | asection *input_section, | |
1201 | bfd *output_bfd, | |
1202 | char **error_message ATTRIBUTE_UNUSED) | |
1203 | { | |
1204 | if (output_bfd != NULL | |
252b5132 RH |
1205 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
1206 | && (! reloc_entry->howto->partial_inplace | |
1207 | || reloc_entry->addend == 0)) | |
1208 | { | |
1209 | reloc_entry->address += input_section->output_offset; | |
1210 | return bfd_reloc_ok; | |
1211 | } | |
1212 | ||
1213 | return bfd_reloc_continue; | |
1214 | } | |
1215 | \f | |
84865015 NC |
1216 | /* Returns TRUE if section A matches section B. |
1217 | Names, addresses and links may be different, but everything else | |
1218 | should be the same. */ | |
1219 | ||
1220 | static bfd_boolean | |
1221 | section_match (Elf_Internal_Shdr * a, Elf_Internal_Shdr * b) | |
1222 | { | |
1223 | return | |
1224 | a->sh_type == b->sh_type | |
1225 | && a->sh_flags == b->sh_flags | |
1226 | && a->sh_addralign == b->sh_addralign | |
1227 | && a->sh_size == b->sh_size | |
1228 | && a->sh_entsize == b->sh_entsize | |
1229 | /* FIXME: Check sh_addr ? */ | |
1230 | ; | |
1231 | } | |
1232 | ||
1233 | /* Find a section in OBFD that has the same characteristics | |
1234 | as IHEADER. Return the index of this section or SHN_UNDEF if | |
1235 | none can be found. Check's section HINT first, as this is likely | |
1236 | to be the correct section. */ | |
1237 | ||
1238 | static unsigned int | |
1239 | find_link (bfd * obfd, Elf_Internal_Shdr * iheader, unsigned int hint) | |
1240 | { | |
1241 | Elf_Internal_Shdr ** oheaders = elf_elfsections (obfd); | |
1242 | unsigned int i; | |
1243 | ||
1244 | if (section_match (oheaders[hint], iheader)) | |
1245 | return hint; | |
1246 | ||
1247 | for (i = 1; i < elf_numsections (obfd); i++) | |
1248 | { | |
1249 | Elf_Internal_Shdr * oheader = oheaders[i]; | |
1250 | ||
1251 | if (section_match (oheader, iheader)) | |
1252 | /* FIXME: Do we care if there is a potential for | |
1253 | multiple matches ? */ | |
1254 | return i; | |
1255 | } | |
1256 | ||
1257 | return SHN_UNDEF; | |
1258 | } | |
1259 | ||
0ac4564e L |
1260 | /* Copy the program header and other data from one object module to |
1261 | another. */ | |
252b5132 | 1262 | |
b34976b6 | 1263 | bfd_boolean |
217aa764 | 1264 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 | 1265 | { |
84865015 NC |
1266 | Elf_Internal_Shdr ** iheaders = elf_elfsections (ibfd); |
1267 | Elf_Internal_Shdr ** oheaders = elf_elfsections (obfd); | |
1268 | unsigned int i; | |
1269 | ||
2d502050 | 1270 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
84865015 | 1271 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
b34976b6 | 1272 | return TRUE; |
2d502050 | 1273 | |
57b828ef L |
1274 | if (!elf_flags_init (obfd)) |
1275 | { | |
1276 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
1277 | elf_flags_init (obfd) = TRUE; | |
1278 | } | |
2d502050 | 1279 | |
0ac4564e | 1280 | elf_gp (obfd) = elf_gp (ibfd); |
57b828ef L |
1281 | |
1282 | /* Also copy the EI_OSABI field. */ | |
1283 | elf_elfheader (obfd)->e_ident[EI_OSABI] = | |
1284 | elf_elfheader (ibfd)->e_ident[EI_OSABI]; | |
104d59d1 JM |
1285 | |
1286 | /* Copy object attributes. */ | |
1287 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
63b9bbb7 | 1288 | |
84865015 NC |
1289 | if (iheaders == NULL || oheaders == NULL) |
1290 | return TRUE; | |
63b9bbb7 | 1291 | |
84865015 NC |
1292 | /* Possibly copy the sh_info and sh_link fields. */ |
1293 | for (i = 1; i < elf_numsections (obfd); i++) | |
63b9bbb7 | 1294 | { |
84865015 NC |
1295 | unsigned int j; |
1296 | Elf_Internal_Shdr * oheader = oheaders[i]; | |
63b9bbb7 | 1297 | |
84865015 NC |
1298 | if (oheader == NULL |
1299 | || (oheader->sh_type != SHT_NOBITS | |
1300 | && oheader->sh_type < SHT_LOOS) | |
1301 | || oheader->sh_size == 0 | |
1302 | || (oheader->sh_info != 0 && oheader->sh_link != 0)) | |
1303 | continue; | |
63b9bbb7 | 1304 | |
84865015 NC |
1305 | /* Scan for the matching section in the input bfd. |
1306 | FIXME: We could use something better than a linear scan here. | |
1307 | Unfortunately we cannot compare names as the output string table | |
1308 | is empty, so instead we check size, address and type. */ | |
1309 | for (j = 1; j < elf_numsections (ibfd); j++) | |
1310 | { | |
1311 | Elf_Internal_Shdr * iheader = iheaders[j]; | |
1312 | ||
1313 | /* Since --only-keep-debug turns all non-debug sections into | |
1314 | SHT_NOBITS sections, the output SHT_NOBITS type matches any | |
1315 | input type. */ | |
1316 | if ((oheader->sh_type == SHT_NOBITS | |
1317 | || iheader->sh_type == oheader->sh_type) | |
1318 | && iheader->sh_flags == oheader->sh_flags | |
1319 | && iheader->sh_addralign == oheader->sh_addralign | |
1320 | && iheader->sh_entsize == oheader->sh_entsize | |
1321 | && iheader->sh_size == oheader->sh_size | |
1322 | && iheader->sh_addr == oheader->sh_addr | |
1323 | && (iheader->sh_info != oheader->sh_info | |
1324 | || iheader->sh_link != oheader->sh_link)) | |
63b9bbb7 | 1325 | { |
84865015 NC |
1326 | /* PR 19938: Attempt to preserve the sh_link and sh_info fields |
1327 | of OS and Processor specific sections. We try harder for | |
1328 | these sections, because this is not just about matching | |
1329 | stripped binaries to their originals. */ | |
1330 | if (oheader->sh_type >= SHT_LOOS) | |
63b9bbb7 | 1331 | { |
84865015 NC |
1332 | const struct elf_backend_data *bed = get_elf_backend_data (obfd); |
1333 | bfd_boolean changed = FALSE; | |
1334 | unsigned int link; | |
1335 | ||
1336 | /* Allow the target a chance to decide how these fields should | |
1337 | be set. */ | |
1338 | if (bed->elf_backend_set_special_section_info_and_link != NULL | |
1339 | && bed->elf_backend_set_special_section_info_and_link | |
1340 | (ibfd, obfd, iheader, oheader)) | |
1341 | break; | |
1342 | ||
1343 | /* We have iheader which matches oheader, but which has | |
1344 | non-zero sh_info and/or sh_link fields. Attempt to | |
1345 | follow those links and find the section in the output | |
1346 | bfd which corresponds to the linked section in the input | |
1347 | bfd. */ | |
1348 | if (iheader->sh_link != SHN_UNDEF) | |
1349 | { | |
1350 | link = find_link (obfd, iheaders[iheader->sh_link], | |
1351 | iheader->sh_link); | |
1352 | if (link != SHN_UNDEF) | |
1353 | { | |
1354 | oheader->sh_link = link; | |
1355 | changed = TRUE; | |
1356 | } | |
1357 | else | |
1358 | /* FIXME: Should we install iheader->sh_link | |
1359 | if we could not find a match ? */ | |
1360 | (* _bfd_error_handler) | |
1361 | (_("%B: Failed to find link section for section %d"), | |
1362 | obfd, i); | |
1363 | } | |
1364 | ||
1365 | if (iheader->sh_info) | |
1366 | { | |
1367 | /* The sh_info field can hold arbitrary information, | |
1368 | but if the SHF_LINK_INFO flag is set then it | |
1369 | should be interpreted as a section index. */ | |
1370 | if (iheader->sh_flags & SHF_INFO_LINK) | |
1371 | link = find_link (obfd, iheaders[iheader->sh_info], | |
1372 | iheader->sh_info); | |
1373 | else | |
1374 | /* No idea what it means - just copy it. */ | |
1375 | link = iheader->sh_info; | |
1376 | ||
1377 | if (link != SHN_UNDEF) | |
1378 | { | |
1379 | oheader->sh_info = link; | |
1380 | changed = TRUE; | |
1381 | } | |
1382 | else | |
1383 | (* _bfd_error_handler) | |
1384 | (_("%B: Failed to find info section for section %d"), | |
1385 | obfd, i); | |
1386 | } | |
1387 | ||
1388 | if (changed) | |
1389 | break; | |
1390 | } | |
1391 | else | |
1392 | { | |
1393 | /* This is an feature for objcopy --only-keep-debug: | |
1394 | When a section's type is changed to NOBITS, we preserve | |
1395 | the sh_link and sh_info fields so that they can be | |
1396 | matched up with the original. | |
1397 | ||
1398 | Note: Strictly speaking these assignments are wrong. | |
63b9bbb7 NC |
1399 | The sh_link and sh_info fields should point to the |
1400 | relevent sections in the output BFD, which may not be in | |
84865015 NC |
1401 | the same location as they were in the input BFD. But |
1402 | the whole point of this action is to preserve the | |
1403 | original values of the sh_link and sh_info fields, so | |
1404 | that they can be matched up with the section headers in | |
1405 | the original file. So strictly speaking we may be | |
1406 | creating an invalid ELF file, but it is only for a file | |
1407 | that just contains debug info and only for sections | |
1408 | without any contents. */ | |
63b9bbb7 NC |
1409 | if (oheader->sh_link == 0) |
1410 | oheader->sh_link = iheader->sh_link; | |
1411 | if (oheader->sh_info == 0) | |
1412 | oheader->sh_info = iheader->sh_info; | |
1413 | break; | |
1414 | } | |
1415 | } | |
1416 | } | |
1417 | } | |
1418 | ||
b34976b6 | 1419 | return TRUE; |
2d502050 L |
1420 | } |
1421 | ||
cedc298e L |
1422 | static const char * |
1423 | get_segment_type (unsigned int p_type) | |
1424 | { | |
1425 | const char *pt; | |
1426 | switch (p_type) | |
1427 | { | |
1428 | case PT_NULL: pt = "NULL"; break; | |
1429 | case PT_LOAD: pt = "LOAD"; break; | |
1430 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1431 | case PT_INTERP: pt = "INTERP"; break; | |
1432 | case PT_NOTE: pt = "NOTE"; break; | |
1433 | case PT_SHLIB: pt = "SHLIB"; break; | |
1434 | case PT_PHDR: pt = "PHDR"; break; | |
1435 | case PT_TLS: pt = "TLS"; break; | |
1436 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; | |
2b05f1b7 | 1437 | case PT_GNU_STACK: pt = "STACK"; break; |
cedc298e L |
1438 | case PT_GNU_RELRO: pt = "RELRO"; break; |
1439 | default: pt = NULL; break; | |
1440 | } | |
1441 | return pt; | |
1442 | } | |
1443 | ||
f0b79d91 L |
1444 | /* Print out the program headers. */ |
1445 | ||
b34976b6 | 1446 | bfd_boolean |
217aa764 | 1447 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1448 | { |
a50b1753 | 1449 | FILE *f = (FILE *) farg; |
252b5132 RH |
1450 | Elf_Internal_Phdr *p; |
1451 | asection *s; | |
1452 | bfd_byte *dynbuf = NULL; | |
1453 | ||
1454 | p = elf_tdata (abfd)->phdr; | |
1455 | if (p != NULL) | |
1456 | { | |
1457 | unsigned int i, c; | |
1458 | ||
1459 | fprintf (f, _("\nProgram Header:\n")); | |
1460 | c = elf_elfheader (abfd)->e_phnum; | |
1461 | for (i = 0; i < c; i++, p++) | |
1462 | { | |
cedc298e | 1463 | const char *pt = get_segment_type (p->p_type); |
252b5132 RH |
1464 | char buf[20]; |
1465 | ||
cedc298e | 1466 | if (pt == NULL) |
252b5132 | 1467 | { |
cedc298e L |
1468 | sprintf (buf, "0x%lx", p->p_type); |
1469 | pt = buf; | |
252b5132 | 1470 | } |
dc810e39 | 1471 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1472 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1473 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1474 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1475 | fprintf (f, " paddr 0x"); |
60b89a18 | 1476 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1477 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1478 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1479 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1480 | fprintf (f, " memsz 0x"); |
60b89a18 | 1481 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1482 | fprintf (f, " flags %c%c%c", |
1483 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1484 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1485 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1486 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1487 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1488 | fprintf (f, "\n"); |
1489 | } | |
1490 | } | |
1491 | ||
1492 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1493 | if (s != NULL) | |
1494 | { | |
cb33740c | 1495 | unsigned int elfsec; |
dc810e39 | 1496 | unsigned long shlink; |
252b5132 RH |
1497 | bfd_byte *extdyn, *extdynend; |
1498 | size_t extdynsize; | |
217aa764 | 1499 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1500 | |
1501 | fprintf (f, _("\nDynamic Section:\n")); | |
1502 | ||
eea6121a | 1503 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1504 | goto error_return; |
1505 | ||
1506 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
cb33740c | 1507 | if (elfsec == SHN_BAD) |
252b5132 | 1508 | goto error_return; |
dc810e39 | 1509 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1510 | |
1511 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1512 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1513 | ||
1514 | extdyn = dynbuf; | |
06614111 NC |
1515 | /* PR 17512: file: 6f427532. */ |
1516 | if (s->size < extdynsize) | |
1517 | goto error_return; | |
eea6121a | 1518 | extdynend = extdyn + s->size; |
1036838a NC |
1519 | /* PR 17512: file: id:000006,sig:06,src:000000,op:flip4,pos:5664. |
1520 | Fix range check. */ | |
1521 | for (; extdyn <= (extdynend - extdynsize); extdyn += extdynsize) | |
252b5132 RH |
1522 | { |
1523 | Elf_Internal_Dyn dyn; | |
ad9563d6 | 1524 | const char *name = ""; |
252b5132 | 1525 | char ab[20]; |
b34976b6 | 1526 | bfd_boolean stringp; |
ad9563d6 | 1527 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 1528 | |
217aa764 | 1529 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1530 | |
1531 | if (dyn.d_tag == DT_NULL) | |
1532 | break; | |
1533 | ||
b34976b6 | 1534 | stringp = FALSE; |
252b5132 RH |
1535 | switch (dyn.d_tag) |
1536 | { | |
1537 | default: | |
ad9563d6 CM |
1538 | if (bed->elf_backend_get_target_dtag) |
1539 | name = (*bed->elf_backend_get_target_dtag) (dyn.d_tag); | |
1540 | ||
1541 | if (!strcmp (name, "")) | |
1542 | { | |
1543 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1544 | name = ab; | |
1545 | } | |
252b5132 RH |
1546 | break; |
1547 | ||
b34976b6 | 1548 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1549 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1550 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1551 | case DT_HASH: name = "HASH"; break; | |
1552 | case DT_STRTAB: name = "STRTAB"; break; | |
1553 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1554 | case DT_RELA: name = "RELA"; break; | |
1555 | case DT_RELASZ: name = "RELASZ"; break; | |
1556 | case DT_RELAENT: name = "RELAENT"; break; | |
1557 | case DT_STRSZ: name = "STRSZ"; break; | |
1558 | case DT_SYMENT: name = "SYMENT"; break; | |
1559 | case DT_INIT: name = "INIT"; break; | |
1560 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1561 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1562 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1563 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1564 | case DT_REL: name = "REL"; break; | |
1565 | case DT_RELSZ: name = "RELSZ"; break; | |
1566 | case DT_RELENT: name = "RELENT"; break; | |
1567 | case DT_PLTREL: name = "PLTREL"; break; | |
1568 | case DT_DEBUG: name = "DEBUG"; break; | |
1569 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1570 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1571 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1572 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1573 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1574 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1575 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1576 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1577 | case DT_FLAGS: name = "FLAGS"; break; |
1578 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1579 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1580 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1581 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1582 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1583 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1584 | case DT_FEATURE: name = "FEATURE"; break; | |
1585 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1586 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1587 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1588 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1589 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1590 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1591 | case DT_PLTPAD: name = "PLTPAD"; break; |
1592 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1593 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1594 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1595 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1596 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1597 | case DT_VERSYM: name = "VERSYM"; break; |
1598 | case DT_VERDEF: name = "VERDEF"; break; | |
1599 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1600 | case DT_VERNEED: name = "VERNEED"; break; | |
1601 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1602 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1603 | case DT_USED: name = "USED"; break; |
b34976b6 | 1604 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
fdc90cb4 | 1605 | case DT_GNU_HASH: name = "GNU_HASH"; break; |
252b5132 RH |
1606 | } |
1607 | ||
ad9563d6 | 1608 | fprintf (f, " %-20s ", name); |
252b5132 | 1609 | if (! stringp) |
a1f3c56e AN |
1610 | { |
1611 | fprintf (f, "0x"); | |
1612 | bfd_fprintf_vma (abfd, f, dyn.d_un.d_val); | |
1613 | } | |
252b5132 RH |
1614 | else |
1615 | { | |
1616 | const char *string; | |
dc810e39 | 1617 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1618 | |
dc810e39 | 1619 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1620 | if (string == NULL) |
1621 | goto error_return; | |
1622 | fprintf (f, "%s", string); | |
1623 | } | |
1624 | fprintf (f, "\n"); | |
1625 | } | |
1626 | ||
1627 | free (dynbuf); | |
1628 | dynbuf = NULL; | |
1629 | } | |
1630 | ||
1631 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1632 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1633 | { | |
fc0e6df6 | 1634 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1635 | return FALSE; |
252b5132 RH |
1636 | } |
1637 | ||
1638 | if (elf_dynverdef (abfd) != 0) | |
1639 | { | |
1640 | Elf_Internal_Verdef *t; | |
1641 | ||
1642 | fprintf (f, _("\nVersion definitions:\n")); | |
1643 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1644 | { | |
1645 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
d0fb9a8d JJ |
1646 | t->vd_flags, t->vd_hash, |
1647 | t->vd_nodename ? t->vd_nodename : "<corrupt>"); | |
1648 | if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL) | |
252b5132 RH |
1649 | { |
1650 | Elf_Internal_Verdaux *a; | |
1651 | ||
1652 | fprintf (f, "\t"); | |
1653 | for (a = t->vd_auxptr->vda_nextptr; | |
1654 | a != NULL; | |
1655 | a = a->vda_nextptr) | |
d0fb9a8d JJ |
1656 | fprintf (f, "%s ", |
1657 | a->vda_nodename ? a->vda_nodename : "<corrupt>"); | |
252b5132 RH |
1658 | fprintf (f, "\n"); |
1659 | } | |
1660 | } | |
1661 | } | |
1662 | ||
1663 | if (elf_dynverref (abfd) != 0) | |
1664 | { | |
1665 | Elf_Internal_Verneed *t; | |
1666 | ||
1667 | fprintf (f, _("\nVersion References:\n")); | |
1668 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1669 | { | |
1670 | Elf_Internal_Vernaux *a; | |
1671 | ||
d0fb9a8d JJ |
1672 | fprintf (f, _(" required from %s:\n"), |
1673 | t->vn_filename ? t->vn_filename : "<corrupt>"); | |
252b5132 RH |
1674 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
1675 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
d0fb9a8d JJ |
1676 | a->vna_flags, a->vna_other, |
1677 | a->vna_nodename ? a->vna_nodename : "<corrupt>"); | |
252b5132 RH |
1678 | } |
1679 | } | |
1680 | ||
b34976b6 | 1681 | return TRUE; |
252b5132 RH |
1682 | |
1683 | error_return: | |
1684 | if (dynbuf != NULL) | |
1685 | free (dynbuf); | |
b34976b6 | 1686 | return FALSE; |
252b5132 RH |
1687 | } |
1688 | ||
bb4d2ac2 L |
1689 | /* Get version string. */ |
1690 | ||
1691 | const char * | |
60bb06bc L |
1692 | _bfd_elf_get_symbol_version_string (bfd *abfd, asymbol *symbol, |
1693 | bfd_boolean *hidden) | |
bb4d2ac2 L |
1694 | { |
1695 | const char *version_string = NULL; | |
1696 | if (elf_dynversym (abfd) != 0 | |
1697 | && (elf_dynverdef (abfd) != 0 || elf_dynverref (abfd) != 0)) | |
1698 | { | |
1699 | unsigned int vernum = ((elf_symbol_type *) symbol)->version; | |
1700 | ||
1701 | *hidden = (vernum & VERSYM_HIDDEN) != 0; | |
1702 | vernum &= VERSYM_VERSION; | |
1703 | ||
1704 | if (vernum == 0) | |
1705 | version_string = ""; | |
1706 | else if (vernum == 1) | |
1707 | version_string = "Base"; | |
1708 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1709 | version_string = | |
1710 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1711 | else | |
1712 | { | |
1713 | Elf_Internal_Verneed *t; | |
1714 | ||
1715 | version_string = ""; | |
1716 | for (t = elf_tdata (abfd)->verref; | |
1717 | t != NULL; | |
1718 | t = t->vn_nextref) | |
1719 | { | |
1720 | Elf_Internal_Vernaux *a; | |
1721 | ||
1722 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1723 | { | |
1724 | if (a->vna_other == vernum) | |
1725 | { | |
1726 | version_string = a->vna_nodename; | |
1727 | break; | |
1728 | } | |
1729 | } | |
1730 | } | |
1731 | } | |
1732 | } | |
1733 | return version_string; | |
1734 | } | |
1735 | ||
252b5132 RH |
1736 | /* Display ELF-specific fields of a symbol. */ |
1737 | ||
1738 | void | |
217aa764 AM |
1739 | bfd_elf_print_symbol (bfd *abfd, |
1740 | void *filep, | |
1741 | asymbol *symbol, | |
1742 | bfd_print_symbol_type how) | |
252b5132 | 1743 | { |
a50b1753 | 1744 | FILE *file = (FILE *) filep; |
252b5132 RH |
1745 | switch (how) |
1746 | { | |
1747 | case bfd_print_symbol_name: | |
1748 | fprintf (file, "%s", symbol->name); | |
1749 | break; | |
1750 | case bfd_print_symbol_more: | |
1751 | fprintf (file, "elf "); | |
60b89a18 | 1752 | bfd_fprintf_vma (abfd, file, symbol->value); |
0af1713e | 1753 | fprintf (file, " %lx", (unsigned long) symbol->flags); |
252b5132 RH |
1754 | break; |
1755 | case bfd_print_symbol_all: | |
1756 | { | |
4e8a9624 AM |
1757 | const char *section_name; |
1758 | const char *name = NULL; | |
9c5bfbb7 | 1759 | const struct elf_backend_data *bed; |
7a13edea | 1760 | unsigned char st_other; |
dbb410c3 | 1761 | bfd_vma val; |
bb4d2ac2 L |
1762 | const char *version_string; |
1763 | bfd_boolean hidden; | |
c044fabd | 1764 | |
252b5132 | 1765 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1766 | |
1767 | bed = get_elf_backend_data (abfd); | |
1768 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1769 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1770 | |
1771 | if (name == NULL) | |
1772 | { | |
7ee38065 | 1773 | name = symbol->name; |
217aa764 | 1774 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1775 | } |
1776 | ||
252b5132 RH |
1777 | fprintf (file, " %s\t", section_name); |
1778 | /* Print the "other" value for a symbol. For common symbols, | |
1779 | we've already printed the size; now print the alignment. | |
1780 | For other symbols, we have no specified alignment, and | |
1781 | we've printed the address; now print the size. */ | |
dcf6c779 | 1782 | if (symbol->section && bfd_is_com_section (symbol->section)) |
dbb410c3 AM |
1783 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; |
1784 | else | |
1785 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1786 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1787 | |
1788 | /* If we have version information, print it. */ | |
60bb06bc L |
1789 | version_string = _bfd_elf_get_symbol_version_string (abfd, |
1790 | symbol, | |
1791 | &hidden); | |
bb4d2ac2 | 1792 | if (version_string) |
252b5132 | 1793 | { |
bb4d2ac2 | 1794 | if (!hidden) |
252b5132 RH |
1795 | fprintf (file, " %-11s", version_string); |
1796 | else | |
1797 | { | |
1798 | int i; | |
1799 | ||
1800 | fprintf (file, " (%s)", version_string); | |
1801 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1802 | putc (' ', file); | |
1803 | } | |
1804 | } | |
1805 | ||
1806 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1807 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1808 | |
7a13edea NC |
1809 | switch (st_other) |
1810 | { | |
1811 | case 0: break; | |
1812 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1813 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1814 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1815 | default: | |
1816 | /* Some other non-defined flags are also present, so print | |
1817 | everything hex. */ | |
1818 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1819 | } | |
252b5132 | 1820 | |
587ff49e | 1821 | fprintf (file, " %s", name); |
252b5132 RH |
1822 | } |
1823 | break; | |
1824 | } | |
1825 | } | |
252b5132 RH |
1826 | \f |
1827 | /* ELF .o/exec file reading */ | |
1828 | ||
c044fabd | 1829 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1830 | |
b34976b6 | 1831 | bfd_boolean |
217aa764 | 1832 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 | 1833 | { |
4fbb74a6 AM |
1834 | Elf_Internal_Shdr *hdr; |
1835 | Elf_Internal_Ehdr *ehdr; | |
1836 | const struct elf_backend_data *bed; | |
90937f86 | 1837 | const char *name; |
bf67003b NC |
1838 | bfd_boolean ret = TRUE; |
1839 | static bfd_boolean * sections_being_created = NULL; | |
5a4b0ccc | 1840 | static bfd * sections_being_created_abfd = NULL; |
bf67003b | 1841 | static unsigned int nesting = 0; |
252b5132 | 1842 | |
4fbb74a6 AM |
1843 | if (shindex >= elf_numsections (abfd)) |
1844 | return FALSE; | |
1845 | ||
bf67003b NC |
1846 | if (++ nesting > 3) |
1847 | { | |
1848 | /* PR17512: A corrupt ELF binary might contain a recursive group of | |
06614111 | 1849 | sections, with each the string indicies pointing to the next in the |
bf67003b NC |
1850 | loop. Detect this here, by refusing to load a section that we are |
1851 | already in the process of loading. We only trigger this test if | |
1852 | we have nested at least three sections deep as normal ELF binaries | |
5a4b0ccc NC |
1853 | can expect to recurse at least once. |
1854 | ||
1855 | FIXME: It would be better if this array was attached to the bfd, | |
1856 | rather than being held in a static pointer. */ | |
1857 | ||
1858 | if (sections_being_created_abfd != abfd) | |
1859 | sections_being_created = NULL; | |
bf67003b NC |
1860 | if (sections_being_created == NULL) |
1861 | { | |
1862 | /* FIXME: It would be more efficient to attach this array to the bfd somehow. */ | |
1863 | sections_being_created = (bfd_boolean *) | |
1864 | bfd_zalloc (abfd, elf_numsections (abfd) * sizeof (bfd_boolean)); | |
5a4b0ccc | 1865 | sections_being_created_abfd = abfd; |
bf67003b NC |
1866 | } |
1867 | if (sections_being_created [shindex]) | |
1868 | { | |
1869 | (*_bfd_error_handler) | |
1870 | (_("%B: warning: loop in section dependencies detected"), abfd); | |
1871 | return FALSE; | |
1872 | } | |
1873 | sections_being_created [shindex] = TRUE; | |
1874 | } | |
1875 | ||
4fbb74a6 AM |
1876 | hdr = elf_elfsections (abfd)[shindex]; |
1877 | ehdr = elf_elfheader (abfd); | |
1878 | name = bfd_elf_string_from_elf_section (abfd, ehdr->e_shstrndx, | |
1b3a8575 | 1879 | hdr->sh_name); |
933d961a | 1880 | if (name == NULL) |
bf67003b | 1881 | goto fail; |
252b5132 | 1882 | |
4fbb74a6 | 1883 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
1884 | switch (hdr->sh_type) |
1885 | { | |
1886 | case SHT_NULL: | |
1887 | /* Inactive section. Throw it away. */ | |
bf67003b | 1888 | goto success; |
252b5132 | 1889 | |
bf67003b NC |
1890 | case SHT_PROGBITS: /* Normal section with contents. */ |
1891 | case SHT_NOBITS: /* .bss section. */ | |
1892 | case SHT_HASH: /* .hash section. */ | |
1893 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1894 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1895 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1896 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1897 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
fdc90cb4 | 1898 | case SHT_GNU_HASH: /* .gnu.hash section. */ |
bf67003b NC |
1899 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
1900 | goto success; | |
252b5132 | 1901 | |
797fc050 | 1902 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1903 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
bf67003b NC |
1904 | goto fail; |
1905 | ||
cfcac11d NC |
1906 | if (hdr->sh_link > elf_numsections (abfd)) |
1907 | { | |
caa83f8b | 1908 | /* PR 10478: Accept Solaris binaries with a sh_link |
cfcac11d NC |
1909 | field set to SHN_BEFORE or SHN_AFTER. */ |
1910 | switch (bfd_get_arch (abfd)) | |
1911 | { | |
caa83f8b | 1912 | case bfd_arch_i386: |
cfcac11d NC |
1913 | case bfd_arch_sparc: |
1914 | if (hdr->sh_link == (SHN_LORESERVE & 0xffff) /* SHN_BEFORE */ | |
1915 | || hdr->sh_link == ((SHN_LORESERVE + 1) & 0xffff) /* SHN_AFTER */) | |
1916 | break; | |
1917 | /* Otherwise fall through. */ | |
1918 | default: | |
bf67003b | 1919 | goto fail; |
cfcac11d NC |
1920 | } |
1921 | } | |
1922 | else if (elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
bf67003b | 1923 | goto fail; |
cfcac11d | 1924 | else if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
797fc050 AM |
1925 | { |
1926 | Elf_Internal_Shdr *dynsymhdr; | |
1927 | ||
1928 | /* The shared libraries distributed with hpux11 have a bogus | |
1929 | sh_link field for the ".dynamic" section. Find the | |
1930 | string table for the ".dynsym" section instead. */ | |
1931 | if (elf_dynsymtab (abfd) != 0) | |
1932 | { | |
1933 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1934 | hdr->sh_link = dynsymhdr->sh_link; | |
1935 | } | |
1936 | else | |
1937 | { | |
1938 | unsigned int i, num_sec; | |
1939 | ||
1940 | num_sec = elf_numsections (abfd); | |
1941 | for (i = 1; i < num_sec; i++) | |
1942 | { | |
1943 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1944 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1945 | { | |
1946 | hdr->sh_link = dynsymhdr->sh_link; | |
1947 | break; | |
1948 | } | |
1949 | } | |
1950 | } | |
1951 | } | |
bf67003b | 1952 | goto success; |
797fc050 | 1953 | |
bf67003b | 1954 | case SHT_SYMTAB: /* A symbol table. */ |
252b5132 | 1955 | if (elf_onesymtab (abfd) == shindex) |
bf67003b | 1956 | goto success; |
252b5132 | 1957 | |
a50b2160 | 1958 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
bf67003b NC |
1959 | goto fail; |
1960 | ||
3337c1e5 | 1961 | if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size) |
eee3b786 AM |
1962 | { |
1963 | if (hdr->sh_size != 0) | |
bf67003b | 1964 | goto fail; |
eee3b786 AM |
1965 | /* Some assemblers erroneously set sh_info to one with a |
1966 | zero sh_size. ld sees this as a global symbol count | |
1967 | of (unsigned) -1. Fix it here. */ | |
1968 | hdr->sh_info = 0; | |
bf67003b | 1969 | goto success; |
eee3b786 | 1970 | } |
bf67003b | 1971 | |
16ad13ec NC |
1972 | /* PR 18854: A binary might contain more than one symbol table. |
1973 | Unusual, but possible. Warn, but continue. */ | |
1974 | if (elf_onesymtab (abfd) != 0) | |
1975 | { | |
1976 | (*_bfd_error_handler) | |
1977 | (_("%B: warning: multiple symbol tables detected - ignoring the table in section %u"), | |
1978 | abfd, shindex); | |
1979 | goto success; | |
1980 | } | |
252b5132 | 1981 | elf_onesymtab (abfd) = shindex; |
6a40cf0c NC |
1982 | elf_symtab_hdr (abfd) = *hdr; |
1983 | elf_elfsections (abfd)[shindex] = hdr = & elf_symtab_hdr (abfd); | |
252b5132 RH |
1984 | abfd->flags |= HAS_SYMS; |
1985 | ||
1986 | /* Sometimes a shared object will map in the symbol table. If | |
08a40648 AM |
1987 | SHF_ALLOC is set, and this is a shared object, then we also |
1988 | treat this section as a BFD section. We can not base the | |
1989 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1990 | set in a relocatable object file, which would confuse the | |
1991 | linker. */ | |
252b5132 RH |
1992 | if ((hdr->sh_flags & SHF_ALLOC) != 0 |
1993 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1994 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1995 | shindex)) | |
bf67003b | 1996 | goto fail; |
252b5132 | 1997 | |
1b3a8575 AM |
1998 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1999 | can't read symbols without that section loaded as well. It | |
2000 | is most likely specified by the next section header. */ | |
6a40cf0c NC |
2001 | { |
2002 | elf_section_list * entry; | |
2003 | unsigned int i, num_sec; | |
1b3a8575 | 2004 | |
6a40cf0c NC |
2005 | for (entry = elf_symtab_shndx_list (abfd); entry != NULL; entry = entry->next) |
2006 | if (entry->hdr.sh_link == shindex) | |
2007 | goto success; | |
2008 | ||
2009 | num_sec = elf_numsections (abfd); | |
2010 | for (i = shindex + 1; i < num_sec; i++) | |
2011 | { | |
2012 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
2013 | ||
2014 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
2015 | && hdr2->sh_link == shindex) | |
2016 | break; | |
2017 | } | |
2018 | ||
2019 | if (i == num_sec) | |
2020 | for (i = 1; i < shindex; i++) | |
1b3a8575 AM |
2021 | { |
2022 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
6a40cf0c | 2023 | |
1b3a8575 AM |
2024 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX |
2025 | && hdr2->sh_link == shindex) | |
2026 | break; | |
2027 | } | |
6a40cf0c NC |
2028 | |
2029 | if (i != shindex) | |
2030 | ret = bfd_section_from_shdr (abfd, i); | |
2031 | /* else FIXME: we have failed to find the symbol table - should we issue an error ? */ | |
2032 | goto success; | |
2033 | } | |
252b5132 | 2034 | |
bf67003b | 2035 | case SHT_DYNSYM: /* A dynamic symbol table. */ |
252b5132 | 2036 | if (elf_dynsymtab (abfd) == shindex) |
bf67003b | 2037 | goto success; |
252b5132 | 2038 | |
a50b2160 | 2039 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
bf67003b NC |
2040 | goto fail; |
2041 | ||
eee3b786 AM |
2042 | if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size) |
2043 | { | |
2044 | if (hdr->sh_size != 0) | |
bf67003b NC |
2045 | goto fail; |
2046 | ||
eee3b786 AM |
2047 | /* Some linkers erroneously set sh_info to one with a |
2048 | zero sh_size. ld sees this as a global symbol count | |
2049 | of (unsigned) -1. Fix it here. */ | |
2050 | hdr->sh_info = 0; | |
bf67003b | 2051 | goto success; |
eee3b786 | 2052 | } |
bf67003b | 2053 | |
16ad13ec NC |
2054 | /* PR 18854: A binary might contain more than one dynamic symbol table. |
2055 | Unusual, but possible. Warn, but continue. */ | |
2056 | if (elf_dynsymtab (abfd) != 0) | |
2057 | { | |
2058 | (*_bfd_error_handler) | |
2059 | (_("%B: warning: multiple dynamic symbol tables detected - ignoring the table in section %u"), | |
2060 | abfd, shindex); | |
2061 | goto success; | |
2062 | } | |
252b5132 RH |
2063 | elf_dynsymtab (abfd) = shindex; |
2064 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
2065 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
2066 | abfd->flags |= HAS_SYMS; | |
2067 | ||
2068 | /* Besides being a symbol table, we also treat this as a regular | |
2069 | section, so that objcopy can handle it. */ | |
bf67003b NC |
2070 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
2071 | goto success; | |
252b5132 | 2072 | |
bf67003b | 2073 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections. */ |
6a40cf0c NC |
2074 | { |
2075 | elf_section_list * entry; | |
9ad5cbcf | 2076 | |
6a40cf0c NC |
2077 | for (entry = elf_symtab_shndx_list (abfd); entry != NULL; entry = entry->next) |
2078 | if (entry->ndx == shindex) | |
2079 | goto success; | |
2080 | ||
2081 | entry = bfd_alloc (abfd, sizeof * entry); | |
2082 | if (entry == NULL) | |
2083 | goto fail; | |
2084 | entry->ndx = shindex; | |
2085 | entry->hdr = * hdr; | |
2086 | entry->next = elf_symtab_shndx_list (abfd); | |
2087 | elf_symtab_shndx_list (abfd) = entry; | |
2088 | elf_elfsections (abfd)[shindex] = & entry->hdr; | |
2089 | goto success; | |
2090 | } | |
9ad5cbcf | 2091 | |
bf67003b | 2092 | case SHT_STRTAB: /* A string table. */ |
252b5132 | 2093 | if (hdr->bfd_section != NULL) |
bf67003b NC |
2094 | goto success; |
2095 | ||
252b5132 RH |
2096 | if (ehdr->e_shstrndx == shindex) |
2097 | { | |
2098 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
2099 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
bf67003b | 2100 | goto success; |
252b5132 | 2101 | } |
bf67003b | 2102 | |
1b3a8575 AM |
2103 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
2104 | { | |
2105 | symtab_strtab: | |
2106 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
2107 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
bf67003b | 2108 | goto success; |
1b3a8575 | 2109 | } |
bf67003b | 2110 | |
1b3a8575 AM |
2111 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) |
2112 | { | |
2113 | dynsymtab_strtab: | |
2114 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
2115 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
2116 | elf_elfsections (abfd)[shindex] = hdr; | |
2117 | /* We also treat this as a regular section, so that objcopy | |
2118 | can handle it. */ | |
bf67003b NC |
2119 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2120 | shindex); | |
2121 | goto success; | |
1b3a8575 | 2122 | } |
252b5132 | 2123 | |
1b3a8575 AM |
2124 | /* If the string table isn't one of the above, then treat it as a |
2125 | regular section. We need to scan all the headers to be sure, | |
2126 | just in case this strtab section appeared before the above. */ | |
2127 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
2128 | { | |
2129 | unsigned int i, num_sec; | |
252b5132 | 2130 | |
1b3a8575 AM |
2131 | num_sec = elf_numsections (abfd); |
2132 | for (i = 1; i < num_sec; i++) | |
2133 | { | |
2134 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
2135 | if (hdr2->sh_link == shindex) | |
2136 | { | |
933d961a JJ |
2137 | /* Prevent endless recursion on broken objects. */ |
2138 | if (i == shindex) | |
bf67003b | 2139 | goto fail; |
1b3a8575 | 2140 | if (! bfd_section_from_shdr (abfd, i)) |
bf67003b | 2141 | goto fail; |
1b3a8575 AM |
2142 | if (elf_onesymtab (abfd) == i) |
2143 | goto symtab_strtab; | |
2144 | if (elf_dynsymtab (abfd) == i) | |
2145 | goto dynsymtab_strtab; | |
2146 | } | |
2147 | } | |
2148 | } | |
bf67003b NC |
2149 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
2150 | goto success; | |
252b5132 RH |
2151 | |
2152 | case SHT_REL: | |
2153 | case SHT_RELA: | |
2154 | /* *These* do a lot of work -- but build no sections! */ | |
2155 | { | |
2156 | asection *target_sect; | |
d4730f92 | 2157 | Elf_Internal_Shdr *hdr2, **p_hdr; |
9ad5cbcf | 2158 | unsigned int num_sec = elf_numsections (abfd); |
d4730f92 BS |
2159 | struct bfd_elf_section_data *esdt; |
2160 | bfd_size_type amt; | |
252b5132 | 2161 | |
aa2ca951 JJ |
2162 | if (hdr->sh_entsize |
2163 | != (bfd_size_type) (hdr->sh_type == SHT_REL | |
a50b2160 | 2164 | ? bed->s->sizeof_rel : bed->s->sizeof_rela)) |
bf67003b | 2165 | goto fail; |
a50b2160 | 2166 | |
03ae5f59 | 2167 | /* Check for a bogus link to avoid crashing. */ |
4fbb74a6 | 2168 | if (hdr->sh_link >= num_sec) |
03ae5f59 ILT |
2169 | { |
2170 | ((*_bfd_error_handler) | |
d003868e AM |
2171 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
2172 | abfd, hdr->sh_link, name, shindex)); | |
bf67003b NC |
2173 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2174 | shindex); | |
2175 | goto success; | |
03ae5f59 ILT |
2176 | } |
2177 | ||
252b5132 RH |
2178 | /* For some incomprehensible reason Oracle distributes |
2179 | libraries for Solaris in which some of the objects have | |
2180 | bogus sh_link fields. It would be nice if we could just | |
2181 | reject them, but, unfortunately, some people need to use | |
2182 | them. We scan through the section headers; if we find only | |
2183 | one suitable symbol table, we clobber the sh_link to point | |
83b89087 L |
2184 | to it. I hope this doesn't break anything. |
2185 | ||
2186 | Don't do it on executable nor shared library. */ | |
2187 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0 | |
2188 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
252b5132 RH |
2189 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) |
2190 | { | |
9ad5cbcf | 2191 | unsigned int scan; |
252b5132 RH |
2192 | int found; |
2193 | ||
2194 | found = 0; | |
9ad5cbcf | 2195 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
2196 | { |
2197 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
2198 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
2199 | { | |
2200 | if (found != 0) | |
2201 | { | |
2202 | found = 0; | |
2203 | break; | |
2204 | } | |
2205 | found = scan; | |
2206 | } | |
2207 | } | |
2208 | if (found != 0) | |
2209 | hdr->sh_link = found; | |
2210 | } | |
2211 | ||
2212 | /* Get the symbol table. */ | |
1b3a8575 AM |
2213 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
2214 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 2215 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
bf67003b | 2216 | goto fail; |
252b5132 RH |
2217 | |
2218 | /* If this reloc section does not use the main symbol table we | |
2219 | don't treat it as a reloc section. BFD can't adequately | |
2220 | represent such a section, so at least for now, we don't | |
c044fabd | 2221 | try. We just present it as a normal section. We also |
60bcf0fa | 2222 | can't use it as a reloc section if it points to the null |
83b89087 L |
2223 | section, an invalid section, another reloc section, or its |
2224 | sh_link points to the null section. */ | |
185ef66d | 2225 | if (hdr->sh_link != elf_onesymtab (abfd) |
83b89087 | 2226 | || hdr->sh_link == SHN_UNDEF |
185ef66d | 2227 | || hdr->sh_info == SHN_UNDEF |
185ef66d AM |
2228 | || hdr->sh_info >= num_sec |
2229 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL | |
2230 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA) | |
bf67003b NC |
2231 | { |
2232 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
2233 | shindex); | |
2234 | goto success; | |
2235 | } | |
252b5132 RH |
2236 | |
2237 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
bf67003b NC |
2238 | goto fail; |
2239 | ||
252b5132 RH |
2240 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
2241 | if (target_sect == NULL) | |
bf67003b | 2242 | goto fail; |
252b5132 | 2243 | |
d4730f92 BS |
2244 | esdt = elf_section_data (target_sect); |
2245 | if (hdr->sh_type == SHT_RELA) | |
2246 | p_hdr = &esdt->rela.hdr; | |
252b5132 | 2247 | else |
d4730f92 BS |
2248 | p_hdr = &esdt->rel.hdr; |
2249 | ||
06614111 NC |
2250 | /* PR 17512: file: 0b4f81b7. */ |
2251 | if (*p_hdr != NULL) | |
2252 | goto fail; | |
d4730f92 BS |
2253 | amt = sizeof (*hdr2); |
2254 | hdr2 = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt); | |
2255 | if (hdr2 == NULL) | |
bf67003b | 2256 | goto fail; |
252b5132 | 2257 | *hdr2 = *hdr; |
d4730f92 | 2258 | *p_hdr = hdr2; |
252b5132 | 2259 | elf_elfsections (abfd)[shindex] = hdr2; |
d9bc7a44 | 2260 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
2261 | target_sect->flags |= SEC_RELOC; |
2262 | target_sect->relocation = NULL; | |
2263 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
2264 | /* In the section to which the relocations apply, mark whether |
2265 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 2266 | if (hdr->sh_size != 0) |
d4730f92 BS |
2267 | { |
2268 | if (hdr->sh_type == SHT_RELA) | |
2269 | target_sect->use_rela_p = 1; | |
2270 | } | |
252b5132 | 2271 | abfd->flags |= HAS_RELOC; |
bf67003b | 2272 | goto success; |
252b5132 | 2273 | } |
252b5132 RH |
2274 | |
2275 | case SHT_GNU_verdef: | |
2276 | elf_dynverdef (abfd) = shindex; | |
2277 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
bf67003b NC |
2278 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
2279 | goto success; | |
252b5132 RH |
2280 | |
2281 | case SHT_GNU_versym: | |
a50b2160 | 2282 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
bf67003b NC |
2283 | goto fail; |
2284 | ||
252b5132 RH |
2285 | elf_dynversym (abfd) = shindex; |
2286 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
bf67003b NC |
2287 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
2288 | goto success; | |
252b5132 RH |
2289 | |
2290 | case SHT_GNU_verneed: | |
2291 | elf_dynverref (abfd) = shindex; | |
2292 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
bf67003b NC |
2293 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
2294 | goto success; | |
252b5132 RH |
2295 | |
2296 | case SHT_SHLIB: | |
bf67003b | 2297 | goto success; |
252b5132 | 2298 | |
dbb410c3 | 2299 | case SHT_GROUP: |
44534af3 | 2300 | if (! IS_VALID_GROUP_SECTION_HEADER (hdr, GRP_ENTRY_SIZE)) |
bf67003b NC |
2301 | goto fail; |
2302 | ||
6dc132d9 | 2303 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
bf67003b NC |
2304 | goto fail; |
2305 | ||
dbb410c3 AM |
2306 | if (hdr->contents != NULL) |
2307 | { | |
2308 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
06614111 | 2309 | unsigned int n_elt = hdr->sh_size / sizeof (* idx); |
dbb410c3 AM |
2310 | asection *s; |
2311 | ||
06614111 NC |
2312 | if (n_elt == 0) |
2313 | goto fail; | |
b885599b AM |
2314 | if (idx->flags & GRP_COMDAT) |
2315 | hdr->bfd_section->flags | |
2316 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2317 | ||
45c5e9ed L |
2318 | /* We try to keep the same section order as it comes in. */ |
2319 | idx += n_elt; | |
06614111 | 2320 | |
dbb410c3 | 2321 | while (--n_elt != 0) |
1783205a NC |
2322 | { |
2323 | --idx; | |
2324 | ||
2325 | if (idx->shdr != NULL | |
2326 | && (s = idx->shdr->bfd_section) != NULL | |
2327 | && elf_next_in_group (s) != NULL) | |
2328 | { | |
2329 | elf_next_in_group (hdr->bfd_section) = s; | |
2330 | break; | |
2331 | } | |
2332 | } | |
dbb410c3 | 2333 | } |
bf67003b | 2334 | goto success; |
dbb410c3 | 2335 | |
252b5132 | 2336 | default: |
104d59d1 JM |
2337 | /* Possibly an attributes section. */ |
2338 | if (hdr->sh_type == SHT_GNU_ATTRIBUTES | |
2339 | || hdr->sh_type == bed->obj_attrs_section_type) | |
2340 | { | |
2341 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
bf67003b | 2342 | goto fail; |
104d59d1 | 2343 | _bfd_elf_parse_attributes (abfd, hdr); |
bf67003b | 2344 | goto success; |
104d59d1 JM |
2345 | } |
2346 | ||
252b5132 | 2347 | /* Check for any processor-specific section types. */ |
3eb70a79 | 2348 | if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex)) |
bf67003b | 2349 | goto success; |
3eb70a79 L |
2350 | |
2351 | if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER) | |
2352 | { | |
2353 | if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
2354 | /* FIXME: How to properly handle allocated section reserved | |
2355 | for applications? */ | |
2356 | (*_bfd_error_handler) | |
2357 | (_("%B: don't know how to handle allocated, application " | |
2358 | "specific section `%s' [0x%8x]"), | |
2359 | abfd, name, hdr->sh_type); | |
2360 | else | |
bf67003b NC |
2361 | { |
2362 | /* Allow sections reserved for applications. */ | |
2363 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
2364 | shindex); | |
2365 | goto success; | |
2366 | } | |
3eb70a79 L |
2367 | } |
2368 | else if (hdr->sh_type >= SHT_LOPROC | |
2369 | && hdr->sh_type <= SHT_HIPROC) | |
2370 | /* FIXME: We should handle this section. */ | |
2371 | (*_bfd_error_handler) | |
2372 | (_("%B: don't know how to handle processor specific section " | |
2373 | "`%s' [0x%8x]"), | |
2374 | abfd, name, hdr->sh_type); | |
2375 | else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS) | |
ff15b240 NC |
2376 | { |
2377 | /* Unrecognised OS-specific sections. */ | |
2378 | if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0) | |
2379 | /* SHF_OS_NONCONFORMING indicates that special knowledge is | |
08a40648 | 2380 | required to correctly process the section and the file should |
ff15b240 NC |
2381 | be rejected with an error message. */ |
2382 | (*_bfd_error_handler) | |
2383 | (_("%B: don't know how to handle OS specific section " | |
2384 | "`%s' [0x%8x]"), | |
2385 | abfd, name, hdr->sh_type); | |
2386 | else | |
bf67003b NC |
2387 | { |
2388 | /* Otherwise it should be processed. */ | |
2389 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
2390 | goto success; | |
2391 | } | |
ff15b240 | 2392 | } |
3eb70a79 L |
2393 | else |
2394 | /* FIXME: We should handle this section. */ | |
2395 | (*_bfd_error_handler) | |
2396 | (_("%B: don't know how to handle section `%s' [0x%8x]"), | |
2397 | abfd, name, hdr->sh_type); | |
2398 | ||
bf67003b | 2399 | goto fail; |
252b5132 RH |
2400 | } |
2401 | ||
bf67003b NC |
2402 | fail: |
2403 | ret = FALSE; | |
2404 | success: | |
e5b470e2 | 2405 | if (sections_being_created && sections_being_created_abfd == abfd) |
bf67003b NC |
2406 | sections_being_created [shindex] = FALSE; |
2407 | if (-- nesting == 0) | |
5a4b0ccc NC |
2408 | { |
2409 | sections_being_created = NULL; | |
2410 | sections_being_created_abfd = abfd; | |
2411 | } | |
bf67003b | 2412 | return ret; |
252b5132 RH |
2413 | } |
2414 | ||
87d72d41 | 2415 | /* Return the local symbol specified by ABFD, R_SYMNDX. */ |
ec338859 | 2416 | |
87d72d41 AM |
2417 | Elf_Internal_Sym * |
2418 | bfd_sym_from_r_symndx (struct sym_cache *cache, | |
2419 | bfd *abfd, | |
2420 | unsigned long r_symndx) | |
ec338859 | 2421 | { |
ec338859 AM |
2422 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
2423 | ||
a5d1b3b5 AM |
2424 | if (cache->abfd != abfd || cache->indx[ent] != r_symndx) |
2425 | { | |
2426 | Elf_Internal_Shdr *symtab_hdr; | |
2427 | unsigned char esym[sizeof (Elf64_External_Sym)]; | |
2428 | Elf_External_Sym_Shndx eshndx; | |
ec338859 | 2429 | |
a5d1b3b5 AM |
2430 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2431 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, | |
87d72d41 | 2432 | &cache->sym[ent], esym, &eshndx) == NULL) |
a5d1b3b5 | 2433 | return NULL; |
9ad5cbcf | 2434 | |
a5d1b3b5 AM |
2435 | if (cache->abfd != abfd) |
2436 | { | |
2437 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2438 | cache->abfd = abfd; | |
2439 | } | |
2440 | cache->indx[ent] = r_symndx; | |
ec338859 | 2441 | } |
a5d1b3b5 | 2442 | |
87d72d41 | 2443 | return &cache->sym[ent]; |
ec338859 AM |
2444 | } |
2445 | ||
252b5132 RH |
2446 | /* Given an ELF section number, retrieve the corresponding BFD |
2447 | section. */ | |
2448 | ||
2449 | asection * | |
91d6fa6a | 2450 | bfd_section_from_elf_index (bfd *abfd, unsigned int sec_index) |
252b5132 | 2451 | { |
91d6fa6a | 2452 | if (sec_index >= elf_numsections (abfd)) |
252b5132 | 2453 | return NULL; |
91d6fa6a | 2454 | return elf_elfsections (abfd)[sec_index]->bfd_section; |
252b5132 RH |
2455 | } |
2456 | ||
b35d266b | 2457 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 2458 | { |
0112cd26 NC |
2459 | { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2460 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2461 | }; |
2462 | ||
b35d266b | 2463 | static const struct bfd_elf_special_section special_sections_c[] = |
7f4d3958 | 2464 | { |
0112cd26 NC |
2465 | { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 }, |
2466 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2467 | }; |
2468 | ||
b35d266b | 2469 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 2470 | { |
0112cd26 NC |
2471 | { STRING_COMMA_LEN (".data"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2472 | { STRING_COMMA_LEN (".data1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
a9a72a65 DE |
2473 | /* There are more DWARF sections than these, but they needn't be added here |
2474 | unless you have to cope with broken compilers that don't emit section | |
2475 | attributes or you want to help the user writing assembler. */ | |
0112cd26 NC |
2476 | { STRING_COMMA_LEN (".debug"), 0, SHT_PROGBITS, 0 }, |
2477 | { STRING_COMMA_LEN (".debug_line"), 0, SHT_PROGBITS, 0 }, | |
2478 | { STRING_COMMA_LEN (".debug_info"), 0, SHT_PROGBITS, 0 }, | |
2479 | { STRING_COMMA_LEN (".debug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
2480 | { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 }, | |
2481 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, SHF_ALLOC }, | |
2482 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, SHF_ALLOC }, | |
2483 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, SHF_ALLOC }, | |
2484 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2485 | }; |
2486 | ||
b35d266b | 2487 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 | 2488 | { |
0112cd26 NC |
2489 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2490 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2491 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2492 | }; |
2493 | ||
b35d266b | 2494 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 | 2495 | { |
0112cd26 | 2496 | { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
68efed41 | 2497 | { STRING_COMMA_LEN (".gnu.lto_"), -1, SHT_PROGBITS, SHF_EXCLUDE }, |
0112cd26 NC |
2498 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2499 | { STRING_COMMA_LEN (".gnu.version"), 0, SHT_GNU_versym, 0 }, | |
2500 | { STRING_COMMA_LEN (".gnu.version_d"), 0, SHT_GNU_verdef, 0 }, | |
2501 | { STRING_COMMA_LEN (".gnu.version_r"), 0, SHT_GNU_verneed, 0 }, | |
2502 | { STRING_COMMA_LEN (".gnu.liblist"), 0, SHT_GNU_LIBLIST, SHF_ALLOC }, | |
2503 | { STRING_COMMA_LEN (".gnu.conflict"), 0, SHT_RELA, SHF_ALLOC }, | |
2504 | { STRING_COMMA_LEN (".gnu.hash"), 0, SHT_GNU_HASH, SHF_ALLOC }, | |
2505 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2506 | }; |
2507 | ||
b35d266b | 2508 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 | 2509 | { |
0112cd26 NC |
2510 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, SHF_ALLOC }, |
2511 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2512 | }; |
2513 | ||
b35d266b | 2514 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 | 2515 | { |
0112cd26 NC |
2516 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2517 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2518 | { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 }, | |
2519 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2520 | }; |
2521 | ||
b35d266b | 2522 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 | 2523 | { |
0112cd26 NC |
2524 | { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 }, |
2525 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2526 | }; |
2527 | ||
b35d266b | 2528 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2529 | { |
0112cd26 NC |
2530 | { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 }, |
2531 | { STRING_COMMA_LEN (".note"), -1, SHT_NOTE, 0 }, | |
2532 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2533 | }; |
2534 | ||
b35d266b | 2535 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 | 2536 | { |
0112cd26 NC |
2537 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, |
2538 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2539 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2540 | }; |
2541 | ||
b35d266b | 2542 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 | 2543 | { |
0112cd26 NC |
2544 | { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC }, |
2545 | { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2546 | { STRING_COMMA_LEN (".rela"), -1, SHT_RELA, 0 }, | |
2547 | { STRING_COMMA_LEN (".rel"), -1, SHT_REL, 0 }, | |
2548 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2549 | }; |
2550 | ||
b35d266b | 2551 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 | 2552 | { |
0112cd26 NC |
2553 | { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 }, |
2554 | { STRING_COMMA_LEN (".strtab"), 0, SHT_STRTAB, 0 }, | |
2555 | { STRING_COMMA_LEN (".symtab"), 0, SHT_SYMTAB, 0 }, | |
60ff4dc4 HPN |
2556 | /* See struct bfd_elf_special_section declaration for the semantics of |
2557 | this special case where .prefix_length != strlen (.prefix). */ | |
2558 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
0112cd26 | 2559 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
2560 | }; |
2561 | ||
b35d266b | 2562 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 | 2563 | { |
0112cd26 NC |
2564 | { STRING_COMMA_LEN (".text"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2565 | { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2566 | { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2567 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2568 | }; |
2569 | ||
1b315056 CS |
2570 | static const struct bfd_elf_special_section special_sections_z[] = |
2571 | { | |
2572 | { STRING_COMMA_LEN (".zdebug_line"), 0, SHT_PROGBITS, 0 }, | |
2573 | { STRING_COMMA_LEN (".zdebug_info"), 0, SHT_PROGBITS, 0 }, | |
2574 | { STRING_COMMA_LEN (".zdebug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
2575 | { STRING_COMMA_LEN (".zdebug_aranges"), 0, SHT_PROGBITS, 0 }, | |
2576 | { NULL, 0, 0, 0, 0 } | |
2577 | }; | |
2578 | ||
e4c93b56 | 2579 | static const struct bfd_elf_special_section * const special_sections[] = |
7f4d3958 | 2580 | { |
7f4d3958 | 2581 | special_sections_b, /* 'b' */ |
98ece1b3 | 2582 | special_sections_c, /* 'c' */ |
7f4d3958 L |
2583 | special_sections_d, /* 'd' */ |
2584 | NULL, /* 'e' */ | |
2585 | special_sections_f, /* 'f' */ | |
2586 | special_sections_g, /* 'g' */ | |
2587 | special_sections_h, /* 'h' */ | |
2588 | special_sections_i, /* 'i' */ | |
2589 | NULL, /* 'j' */ | |
2590 | NULL, /* 'k' */ | |
2591 | special_sections_l, /* 'l' */ | |
2592 | NULL, /* 'm' */ | |
2593 | special_sections_n, /* 'n' */ | |
2594 | NULL, /* 'o' */ | |
2595 | special_sections_p, /* 'p' */ | |
2596 | NULL, /* 'q' */ | |
2597 | special_sections_r, /* 'r' */ | |
2598 | special_sections_s, /* 's' */ | |
2599 | special_sections_t, /* 't' */ | |
1b315056 CS |
2600 | NULL, /* 'u' */ |
2601 | NULL, /* 'v' */ | |
2602 | NULL, /* 'w' */ | |
2603 | NULL, /* 'x' */ | |
2604 | NULL, /* 'y' */ | |
2605 | special_sections_z /* 'z' */ | |
7f4d3958 L |
2606 | }; |
2607 | ||
551b43fd AM |
2608 | const struct bfd_elf_special_section * |
2609 | _bfd_elf_get_special_section (const char *name, | |
2610 | const struct bfd_elf_special_section *spec, | |
2611 | unsigned int rela) | |
2f89ff8d L |
2612 | { |
2613 | int i; | |
7f4d3958 | 2614 | int len; |
7f4d3958 | 2615 | |
551b43fd | 2616 | len = strlen (name); |
7f4d3958 | 2617 | |
551b43fd | 2618 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2619 | { |
2620 | int suffix_len; | |
551b43fd | 2621 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2622 | |
2623 | if (len < prefix_len) | |
2624 | continue; | |
551b43fd | 2625 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2626 | continue; |
2627 | ||
551b43fd | 2628 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2629 | if (suffix_len <= 0) |
2630 | { | |
2631 | if (name[prefix_len] != 0) | |
2632 | { | |
2633 | if (suffix_len == 0) | |
2634 | continue; | |
2635 | if (name[prefix_len] != '.' | |
2636 | && (suffix_len == -2 | |
551b43fd | 2637 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2638 | continue; |
2639 | } | |
2640 | } | |
2641 | else | |
2642 | { | |
2643 | if (len < prefix_len + suffix_len) | |
2644 | continue; | |
2645 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2646 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2647 | suffix_len) != 0) |
2648 | continue; | |
2649 | } | |
551b43fd | 2650 | return &spec[i]; |
7dcb9820 | 2651 | } |
2f89ff8d L |
2652 | |
2653 | return NULL; | |
2654 | } | |
2655 | ||
7dcb9820 | 2656 | const struct bfd_elf_special_section * |
29ef7005 | 2657 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2658 | { |
551b43fd AM |
2659 | int i; |
2660 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2661 | const struct elf_backend_data *bed; |
2f89ff8d L |
2662 | |
2663 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2664 | if (sec->name == NULL) |
2665 | return NULL; | |
2f89ff8d | 2666 | |
29ef7005 L |
2667 | bed = get_elf_backend_data (abfd); |
2668 | spec = bed->special_sections; | |
2669 | if (spec) | |
2670 | { | |
2671 | spec = _bfd_elf_get_special_section (sec->name, | |
2672 | bed->special_sections, | |
2673 | sec->use_rela_p); | |
2674 | if (spec != NULL) | |
2675 | return spec; | |
2676 | } | |
2677 | ||
551b43fd AM |
2678 | if (sec->name[0] != '.') |
2679 | return NULL; | |
2f89ff8d | 2680 | |
551b43fd | 2681 | i = sec->name[1] - 'b'; |
1b315056 | 2682 | if (i < 0 || i > 'z' - 'b') |
551b43fd AM |
2683 | return NULL; |
2684 | ||
2685 | spec = special_sections[i]; | |
2f89ff8d | 2686 | |
551b43fd AM |
2687 | if (spec == NULL) |
2688 | return NULL; | |
2689 | ||
2690 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2691 | } |
2692 | ||
b34976b6 | 2693 | bfd_boolean |
217aa764 | 2694 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2695 | { |
2696 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2697 | const struct elf_backend_data *bed; |
7dcb9820 | 2698 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2699 | |
f0abc2a1 AM |
2700 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2701 | if (sdata == NULL) | |
2702 | { | |
a50b1753 NC |
2703 | sdata = (struct bfd_elf_section_data *) bfd_zalloc (abfd, |
2704 | sizeof (*sdata)); | |
f0abc2a1 AM |
2705 | if (sdata == NULL) |
2706 | return FALSE; | |
217aa764 | 2707 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2708 | } |
bf572ba0 | 2709 | |
551b43fd AM |
2710 | /* Indicate whether or not this section should use RELA relocations. */ |
2711 | bed = get_elf_backend_data (abfd); | |
2712 | sec->use_rela_p = bed->default_use_rela_p; | |
2713 | ||
e843e0f8 L |
2714 | /* When we read a file, we don't need to set ELF section type and |
2715 | flags. They will be overridden in _bfd_elf_make_section_from_shdr | |
2716 | anyway. We will set ELF section type and flags for all linker | |
2717 | created sections. If user specifies BFD section flags, we will | |
2718 | set ELF section type and flags based on BFD section flags in | |
02ecc8e9 L |
2719 | elf_fake_sections. Special handling for .init_array/.fini_array |
2720 | output sections since they may contain .ctors/.dtors input | |
2721 | sections. We don't want _bfd_elf_init_private_section_data to | |
2722 | copy ELF section type from .ctors/.dtors input sections. */ | |
2723 | if (abfd->direction != read_direction | |
3496cb2a | 2724 | || (sec->flags & SEC_LINKER_CREATED) != 0) |
2f89ff8d | 2725 | { |
551b43fd | 2726 | ssect = (*bed->get_sec_type_attr) (abfd, sec); |
02ecc8e9 L |
2727 | if (ssect != NULL |
2728 | && (!sec->flags | |
2729 | || (sec->flags & SEC_LINKER_CREATED) != 0 | |
2730 | || ssect->type == SHT_INIT_ARRAY | |
2731 | || ssect->type == SHT_FINI_ARRAY)) | |
a31501e9 L |
2732 | { |
2733 | elf_section_type (sec) = ssect->type; | |
2734 | elf_section_flags (sec) = ssect->attr; | |
2735 | } | |
2f89ff8d L |
2736 | } |
2737 | ||
f592407e | 2738 | return _bfd_generic_new_section_hook (abfd, sec); |
252b5132 RH |
2739 | } |
2740 | ||
2741 | /* Create a new bfd section from an ELF program header. | |
2742 | ||
2743 | Since program segments have no names, we generate a synthetic name | |
2744 | of the form segment<NUM>, where NUM is generally the index in the | |
2745 | program header table. For segments that are split (see below) we | |
2746 | generate the names segment<NUM>a and segment<NUM>b. | |
2747 | ||
2748 | Note that some program segments may have a file size that is different than | |
2749 | (less than) the memory size. All this means is that at execution the | |
2750 | system must allocate the amount of memory specified by the memory size, | |
2751 | but only initialize it with the first "file size" bytes read from the | |
2752 | file. This would occur for example, with program segments consisting | |
2753 | of combined data+bss. | |
2754 | ||
2755 | To handle the above situation, this routine generates TWO bfd sections | |
2756 | for the single program segment. The first has the length specified by | |
2757 | the file size of the segment, and the second has the length specified | |
2758 | by the difference between the two sizes. In effect, the segment is split | |
d5191d0c | 2759 | into its initialized and uninitialized parts. |
252b5132 RH |
2760 | |
2761 | */ | |
2762 | ||
b34976b6 | 2763 | bfd_boolean |
217aa764 AM |
2764 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2765 | Elf_Internal_Phdr *hdr, | |
91d6fa6a | 2766 | int hdr_index, |
a50b1753 | 2767 | const char *type_name) |
252b5132 RH |
2768 | { |
2769 | asection *newsect; | |
2770 | char *name; | |
2771 | char namebuf[64]; | |
d4c88bbb | 2772 | size_t len; |
252b5132 RH |
2773 | int split; |
2774 | ||
2775 | split = ((hdr->p_memsz > 0) | |
2776 | && (hdr->p_filesz > 0) | |
2777 | && (hdr->p_memsz > hdr->p_filesz)); | |
d5191d0c AM |
2778 | |
2779 | if (hdr->p_filesz > 0) | |
252b5132 | 2780 | { |
91d6fa6a | 2781 | sprintf (namebuf, "%s%d%s", type_name, hdr_index, split ? "a" : ""); |
d5191d0c | 2782 | len = strlen (namebuf) + 1; |
a50b1753 | 2783 | name = (char *) bfd_alloc (abfd, len); |
d5191d0c AM |
2784 | if (!name) |
2785 | return FALSE; | |
2786 | memcpy (name, namebuf, len); | |
2787 | newsect = bfd_make_section (abfd, name); | |
2788 | if (newsect == NULL) | |
2789 | return FALSE; | |
2790 | newsect->vma = hdr->p_vaddr; | |
2791 | newsect->lma = hdr->p_paddr; | |
2792 | newsect->size = hdr->p_filesz; | |
2793 | newsect->filepos = hdr->p_offset; | |
2794 | newsect->flags |= SEC_HAS_CONTENTS; | |
2795 | newsect->alignment_power = bfd_log2 (hdr->p_align); | |
2796 | if (hdr->p_type == PT_LOAD) | |
252b5132 | 2797 | { |
d5191d0c AM |
2798 | newsect->flags |= SEC_ALLOC; |
2799 | newsect->flags |= SEC_LOAD; | |
2800 | if (hdr->p_flags & PF_X) | |
2801 | { | |
2802 | /* FIXME: all we known is that it has execute PERMISSION, | |
2803 | may be data. */ | |
2804 | newsect->flags |= SEC_CODE; | |
2805 | } | |
2806 | } | |
2807 | if (!(hdr->p_flags & PF_W)) | |
2808 | { | |
2809 | newsect->flags |= SEC_READONLY; | |
252b5132 | 2810 | } |
252b5132 RH |
2811 | } |
2812 | ||
d5191d0c | 2813 | if (hdr->p_memsz > hdr->p_filesz) |
252b5132 | 2814 | { |
d5191d0c AM |
2815 | bfd_vma align; |
2816 | ||
91d6fa6a | 2817 | sprintf (namebuf, "%s%d%s", type_name, hdr_index, split ? "b" : ""); |
d4c88bbb | 2818 | len = strlen (namebuf) + 1; |
a50b1753 | 2819 | name = (char *) bfd_alloc (abfd, len); |
252b5132 | 2820 | if (!name) |
b34976b6 | 2821 | return FALSE; |
d4c88bbb | 2822 | memcpy (name, namebuf, len); |
252b5132 RH |
2823 | newsect = bfd_make_section (abfd, name); |
2824 | if (newsect == NULL) | |
b34976b6 | 2825 | return FALSE; |
252b5132 RH |
2826 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2827 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2828 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
d5191d0c AM |
2829 | newsect->filepos = hdr->p_offset + hdr->p_filesz; |
2830 | align = newsect->vma & -newsect->vma; | |
2831 | if (align == 0 || align > hdr->p_align) | |
2832 | align = hdr->p_align; | |
2833 | newsect->alignment_power = bfd_log2 (align); | |
252b5132 RH |
2834 | if (hdr->p_type == PT_LOAD) |
2835 | { | |
d5191d0c AM |
2836 | /* Hack for gdb. Segments that have not been modified do |
2837 | not have their contents written to a core file, on the | |
2838 | assumption that a debugger can find the contents in the | |
2839 | executable. We flag this case by setting the fake | |
2840 | section size to zero. Note that "real" bss sections will | |
2841 | always have their contents dumped to the core file. */ | |
2842 | if (bfd_get_format (abfd) == bfd_core) | |
2843 | newsect->size = 0; | |
252b5132 RH |
2844 | newsect->flags |= SEC_ALLOC; |
2845 | if (hdr->p_flags & PF_X) | |
2846 | newsect->flags |= SEC_CODE; | |
2847 | } | |
2848 | if (!(hdr->p_flags & PF_W)) | |
2849 | newsect->flags |= SEC_READONLY; | |
2850 | } | |
2851 | ||
b34976b6 | 2852 | return TRUE; |
252b5132 RH |
2853 | } |
2854 | ||
b34976b6 | 2855 | bfd_boolean |
91d6fa6a | 2856 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int hdr_index) |
20cfcaae | 2857 | { |
9c5bfbb7 | 2858 | const struct elf_backend_data *bed; |
20cfcaae NC |
2859 | |
2860 | switch (hdr->p_type) | |
2861 | { | |
2862 | case PT_NULL: | |
91d6fa6a | 2863 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "null"); |
20cfcaae NC |
2864 | |
2865 | case PT_LOAD: | |
91d6fa6a | 2866 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "load"); |
20cfcaae NC |
2867 | |
2868 | case PT_DYNAMIC: | |
91d6fa6a | 2869 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "dynamic"); |
20cfcaae NC |
2870 | |
2871 | case PT_INTERP: | |
91d6fa6a | 2872 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "interp"); |
20cfcaae NC |
2873 | |
2874 | case PT_NOTE: | |
91d6fa6a | 2875 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "note")) |
b34976b6 | 2876 | return FALSE; |
718175fa | 2877 | if (! elf_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2878 | return FALSE; |
2879 | return TRUE; | |
20cfcaae NC |
2880 | |
2881 | case PT_SHLIB: | |
91d6fa6a | 2882 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "shlib"); |
20cfcaae NC |
2883 | |
2884 | case PT_PHDR: | |
91d6fa6a | 2885 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "phdr"); |
20cfcaae | 2886 | |
811072d8 | 2887 | case PT_GNU_EH_FRAME: |
91d6fa6a | 2888 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, |
811072d8 RM |
2889 | "eh_frame_hdr"); |
2890 | ||
2b05f1b7 | 2891 | case PT_GNU_STACK: |
91d6fa6a | 2892 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "stack"); |
9ee5e499 | 2893 | |
8c37241b | 2894 | case PT_GNU_RELRO: |
91d6fa6a | 2895 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "relro"); |
8c37241b | 2896 | |
20cfcaae | 2897 | default: |
8c1acd09 | 2898 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2899 | bed = get_elf_backend_data (abfd); |
91d6fa6a | 2900 | return bed->elf_backend_section_from_phdr (abfd, hdr, hdr_index, "proc"); |
20cfcaae NC |
2901 | } |
2902 | } | |
2903 | ||
d4730f92 BS |
2904 | /* Return the REL_HDR for SEC, assuming there is only a single one, either |
2905 | REL or RELA. */ | |
2906 | ||
2907 | Elf_Internal_Shdr * | |
2908 | _bfd_elf_single_rel_hdr (asection *sec) | |
2909 | { | |
2910 | if (elf_section_data (sec)->rel.hdr) | |
2911 | { | |
2912 | BFD_ASSERT (elf_section_data (sec)->rela.hdr == NULL); | |
2913 | return elf_section_data (sec)->rel.hdr; | |
2914 | } | |
2915 | else | |
2916 | return elf_section_data (sec)->rela.hdr; | |
2917 | } | |
2918 | ||
3e19fb8f L |
2919 | static bfd_boolean |
2920 | _bfd_elf_set_reloc_sh_name (bfd *abfd, | |
2921 | Elf_Internal_Shdr *rel_hdr, | |
2922 | const char *sec_name, | |
2923 | bfd_boolean use_rela_p) | |
2924 | { | |
2925 | char *name = (char *) bfd_alloc (abfd, | |
2926 | sizeof ".rela" + strlen (sec_name)); | |
2927 | if (name == NULL) | |
2928 | return FALSE; | |
2929 | ||
2930 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", sec_name); | |
2931 | rel_hdr->sh_name = | |
2932 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, | |
2933 | FALSE); | |
2934 | if (rel_hdr->sh_name == (unsigned int) -1) | |
2935 | return FALSE; | |
2936 | ||
2937 | return TRUE; | |
2938 | } | |
2939 | ||
d4730f92 BS |
2940 | /* Allocate and initialize a section-header for a new reloc section, |
2941 | containing relocations against ASECT. It is stored in RELDATA. If | |
2942 | USE_RELA_P is TRUE, we use RELA relocations; otherwise, we use REL | |
2943 | relocations. */ | |
23bc299b | 2944 | |
5d13b3b3 | 2945 | static bfd_boolean |
217aa764 | 2946 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
d4730f92 | 2947 | struct bfd_elf_section_reloc_data *reldata, |
f6fe1ccd | 2948 | const char *sec_name, |
3e19fb8f L |
2949 | bfd_boolean use_rela_p, |
2950 | bfd_boolean delay_st_name_p) | |
23bc299b | 2951 | { |
d4730f92 | 2952 | Elf_Internal_Shdr *rel_hdr; |
9c5bfbb7 | 2953 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
d4730f92 BS |
2954 | bfd_size_type amt; |
2955 | ||
2956 | amt = sizeof (Elf_Internal_Shdr); | |
2957 | BFD_ASSERT (reldata->hdr == NULL); | |
2958 | rel_hdr = bfd_zalloc (abfd, amt); | |
2959 | reldata->hdr = rel_hdr; | |
23bc299b | 2960 | |
3e19fb8f L |
2961 | if (delay_st_name_p) |
2962 | rel_hdr->sh_name = (unsigned int) -1; | |
2963 | else if (!_bfd_elf_set_reloc_sh_name (abfd, rel_hdr, sec_name, | |
2964 | use_rela_p)) | |
b34976b6 | 2965 | return FALSE; |
23bc299b MM |
2966 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2967 | rel_hdr->sh_entsize = (use_rela_p | |
2968 | ? bed->s->sizeof_rela | |
2969 | : bed->s->sizeof_rel); | |
72de5009 | 2970 | rel_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align; |
23bc299b MM |
2971 | rel_hdr->sh_flags = 0; |
2972 | rel_hdr->sh_addr = 0; | |
2973 | rel_hdr->sh_size = 0; | |
2974 | rel_hdr->sh_offset = 0; | |
2975 | ||
b34976b6 | 2976 | return TRUE; |
23bc299b MM |
2977 | } |
2978 | ||
94be91de JB |
2979 | /* Return the default section type based on the passed in section flags. */ |
2980 | ||
2981 | int | |
2982 | bfd_elf_get_default_section_type (flagword flags) | |
2983 | { | |
2984 | if ((flags & SEC_ALLOC) != 0 | |
2e76e85a | 2985 | && (flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
94be91de JB |
2986 | return SHT_NOBITS; |
2987 | return SHT_PROGBITS; | |
2988 | } | |
2989 | ||
d4730f92 BS |
2990 | struct fake_section_arg |
2991 | { | |
2992 | struct bfd_link_info *link_info; | |
2993 | bfd_boolean failed; | |
2994 | }; | |
2995 | ||
252b5132 RH |
2996 | /* Set up an ELF internal section header for a section. */ |
2997 | ||
252b5132 | 2998 | static void |
d4730f92 | 2999 | elf_fake_sections (bfd *abfd, asection *asect, void *fsarg) |
252b5132 | 3000 | { |
d4730f92 | 3001 | struct fake_section_arg *arg = (struct fake_section_arg *)fsarg; |
9c5bfbb7 | 3002 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
d4730f92 | 3003 | struct bfd_elf_section_data *esd = elf_section_data (asect); |
252b5132 | 3004 | Elf_Internal_Shdr *this_hdr; |
0414f35b | 3005 | unsigned int sh_type; |
0ce398f1 | 3006 | const char *name = asect->name; |
3e19fb8f | 3007 | bfd_boolean delay_st_name_p = FALSE; |
252b5132 | 3008 | |
d4730f92 | 3009 | if (arg->failed) |
252b5132 RH |
3010 | { |
3011 | /* We already failed; just get out of the bfd_map_over_sections | |
08a40648 | 3012 | loop. */ |
252b5132 RH |
3013 | return; |
3014 | } | |
3015 | ||
d4730f92 | 3016 | this_hdr = &esd->this_hdr; |
252b5132 | 3017 | |
f6fe1ccd | 3018 | if (arg->link_info) |
0ce398f1 | 3019 | { |
f6fe1ccd L |
3020 | /* ld: compress DWARF debug sections with names: .debug_*. */ |
3021 | if ((arg->link_info->compress_debug & COMPRESS_DEBUG) | |
3022 | && (asect->flags & SEC_DEBUGGING) | |
3023 | && name[1] == 'd' | |
3024 | && name[6] == '_') | |
3025 | { | |
3026 | /* Set SEC_ELF_COMPRESS to indicate this section should be | |
3027 | compressed. */ | |
3028 | asect->flags |= SEC_ELF_COMPRESS; | |
0ce398f1 | 3029 | |
3e19fb8f L |
3030 | /* If this section will be compressed, delay adding setion |
3031 | name to section name section after it is compressed in | |
3032 | _bfd_elf_assign_file_positions_for_non_load. */ | |
3033 | delay_st_name_p = TRUE; | |
f6fe1ccd L |
3034 | } |
3035 | } | |
3036 | else if ((asect->flags & SEC_ELF_RENAME)) | |
3037 | { | |
3038 | /* objcopy: rename output DWARF debug section. */ | |
3039 | if ((abfd->flags & (BFD_DECOMPRESS | BFD_COMPRESS_GABI))) | |
3040 | { | |
3041 | /* When we decompress or compress with SHF_COMPRESSED, | |
3042 | convert section name from .zdebug_* to .debug_* if | |
3043 | needed. */ | |
3044 | if (name[1] == 'z') | |
3045 | { | |
3046 | char *new_name = convert_zdebug_to_debug (abfd, name); | |
3047 | if (new_name == NULL) | |
3048 | { | |
3049 | arg->failed = TRUE; | |
3050 | return; | |
3051 | } | |
3052 | name = new_name; | |
3053 | } | |
3054 | } | |
3055 | else if (asect->compress_status == COMPRESS_SECTION_DONE) | |
0ce398f1 | 3056 | { |
f6fe1ccd L |
3057 | /* PR binutils/18087: Compression does not always make a |
3058 | section smaller. So only rename the section when | |
3059 | compression has actually taken place. If input section | |
3060 | name is .zdebug_*, we should never compress it again. */ | |
3061 | char *new_name = convert_debug_to_zdebug (abfd, name); | |
0ce398f1 L |
3062 | if (new_name == NULL) |
3063 | { | |
3064 | arg->failed = TRUE; | |
3065 | return; | |
3066 | } | |
f6fe1ccd L |
3067 | BFD_ASSERT (name[1] != 'z'); |
3068 | name = new_name; | |
0ce398f1 L |
3069 | } |
3070 | } | |
3071 | ||
3e19fb8f L |
3072 | if (delay_st_name_p) |
3073 | this_hdr->sh_name = (unsigned int) -1; | |
3074 | else | |
252b5132 | 3075 | { |
3e19fb8f L |
3076 | this_hdr->sh_name |
3077 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
3078 | name, FALSE); | |
3079 | if (this_hdr->sh_name == (unsigned int) -1) | |
3080 | { | |
3081 | arg->failed = TRUE; | |
3082 | return; | |
3083 | } | |
252b5132 RH |
3084 | } |
3085 | ||
a4d8e49b | 3086 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
3087 | |
3088 | if ((asect->flags & SEC_ALLOC) != 0 | |
3089 | || asect->user_set_vma) | |
3090 | this_hdr->sh_addr = asect->vma; | |
3091 | else | |
3092 | this_hdr->sh_addr = 0; | |
3093 | ||
3094 | this_hdr->sh_offset = 0; | |
eea6121a | 3095 | this_hdr->sh_size = asect->size; |
252b5132 | 3096 | this_hdr->sh_link = 0; |
c86934ce NC |
3097 | /* PR 17512: file: 0eb809fe, 8b0535ee. */ |
3098 | if (asect->alignment_power >= (sizeof (bfd_vma) * 8) - 1) | |
3099 | { | |
3100 | (*_bfd_error_handler) | |
3101 | (_("%B: error: Alignment power %d of section `%A' is too big"), | |
3102 | abfd, asect, asect->alignment_power); | |
3103 | arg->failed = TRUE; | |
3104 | return; | |
3105 | } | |
72de5009 | 3106 | this_hdr->sh_addralign = (bfd_vma) 1 << asect->alignment_power; |
252b5132 RH |
3107 | /* The sh_entsize and sh_info fields may have been set already by |
3108 | copy_private_section_data. */ | |
3109 | ||
3110 | this_hdr->bfd_section = asect; | |
3111 | this_hdr->contents = NULL; | |
3112 | ||
3cddba1e L |
3113 | /* If the section type is unspecified, we set it based on |
3114 | asect->flags. */ | |
98ece1b3 AM |
3115 | if ((asect->flags & SEC_GROUP) != 0) |
3116 | sh_type = SHT_GROUP; | |
98ece1b3 | 3117 | else |
94be91de | 3118 | sh_type = bfd_elf_get_default_section_type (asect->flags); |
98ece1b3 | 3119 | |
3cddba1e | 3120 | if (this_hdr->sh_type == SHT_NULL) |
98ece1b3 AM |
3121 | this_hdr->sh_type = sh_type; |
3122 | else if (this_hdr->sh_type == SHT_NOBITS | |
3123 | && sh_type == SHT_PROGBITS | |
3124 | && (asect->flags & SEC_ALLOC) != 0) | |
3cddba1e | 3125 | { |
98ece1b3 AM |
3126 | /* Warn if we are changing a NOBITS section to PROGBITS, but |
3127 | allow the link to proceed. This can happen when users link | |
3128 | non-bss input sections to bss output sections, or emit data | |
3129 | to a bss output section via a linker script. */ | |
3130 | (*_bfd_error_handler) | |
58f0869b | 3131 | (_("warning: section `%A' type changed to PROGBITS"), asect); |
98ece1b3 | 3132 | this_hdr->sh_type = sh_type; |
3cddba1e L |
3133 | } |
3134 | ||
2f89ff8d | 3135 | switch (this_hdr->sh_type) |
252b5132 | 3136 | { |
2f89ff8d | 3137 | default: |
2f89ff8d L |
3138 | break; |
3139 | ||
3140 | case SHT_STRTAB: | |
3141 | case SHT_INIT_ARRAY: | |
3142 | case SHT_FINI_ARRAY: | |
3143 | case SHT_PREINIT_ARRAY: | |
3144 | case SHT_NOTE: | |
3145 | case SHT_NOBITS: | |
3146 | case SHT_PROGBITS: | |
3147 | break; | |
3148 | ||
3149 | case SHT_HASH: | |
c7ac6ff8 | 3150 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 3151 | break; |
5de3bf90 | 3152 | |
2f89ff8d | 3153 | case SHT_DYNSYM: |
252b5132 | 3154 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
3155 | break; |
3156 | ||
3157 | case SHT_DYNAMIC: | |
252b5132 | 3158 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
3159 | break; |
3160 | ||
3161 | case SHT_RELA: | |
3162 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
3163 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
3164 | break; | |
3165 | ||
3166 | case SHT_REL: | |
3167 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
3168 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
3169 | break; | |
3170 | ||
3171 | case SHT_GNU_versym: | |
252b5132 | 3172 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
3173 | break; |
3174 | ||
3175 | case SHT_GNU_verdef: | |
252b5132 RH |
3176 | this_hdr->sh_entsize = 0; |
3177 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
3178 | cverdefs. The linker will set cverdefs, but sh_info will be |
3179 | zero. */ | |
252b5132 RH |
3180 | if (this_hdr->sh_info == 0) |
3181 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
3182 | else | |
3183 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
3184 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
3185 | break; |
3186 | ||
3187 | case SHT_GNU_verneed: | |
252b5132 RH |
3188 | this_hdr->sh_entsize = 0; |
3189 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
3190 | cverrefs. The linker will set cverrefs, but sh_info will be |
3191 | zero. */ | |
252b5132 RH |
3192 | if (this_hdr->sh_info == 0) |
3193 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
3194 | else | |
3195 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
3196 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
3197 | break; |
3198 | ||
3199 | case SHT_GROUP: | |
1783205a | 3200 | this_hdr->sh_entsize = GRP_ENTRY_SIZE; |
2f89ff8d | 3201 | break; |
fdc90cb4 JJ |
3202 | |
3203 | case SHT_GNU_HASH: | |
3204 | this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4; | |
3205 | break; | |
dbb410c3 | 3206 | } |
252b5132 RH |
3207 | |
3208 | if ((asect->flags & SEC_ALLOC) != 0) | |
3209 | this_hdr->sh_flags |= SHF_ALLOC; | |
3210 | if ((asect->flags & SEC_READONLY) == 0) | |
3211 | this_hdr->sh_flags |= SHF_WRITE; | |
3212 | if ((asect->flags & SEC_CODE) != 0) | |
3213 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
3214 | if ((asect->flags & SEC_MERGE) != 0) |
3215 | { | |
3216 | this_hdr->sh_flags |= SHF_MERGE; | |
3217 | this_hdr->sh_entsize = asect->entsize; | |
f5fa8ca2 | 3218 | } |
84865015 NC |
3219 | if ((asect->flags & SEC_STRINGS) != 0) |
3220 | this_hdr->sh_flags |= SHF_STRINGS; | |
1126897b | 3221 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 3222 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 3223 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
3224 | { |
3225 | this_hdr->sh_flags |= SHF_TLS; | |
3a800eb9 AM |
3226 | if (asect->size == 0 |
3227 | && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
704afa60 | 3228 | { |
3a800eb9 | 3229 | struct bfd_link_order *o = asect->map_tail.link_order; |
b34976b6 | 3230 | |
704afa60 | 3231 | this_hdr->sh_size = 0; |
3a800eb9 AM |
3232 | if (o != NULL) |
3233 | { | |
704afa60 | 3234 | this_hdr->sh_size = o->offset + o->size; |
3a800eb9 AM |
3235 | if (this_hdr->sh_size != 0) |
3236 | this_hdr->sh_type = SHT_NOBITS; | |
3237 | } | |
704afa60 JJ |
3238 | } |
3239 | } | |
18ae9cc1 L |
3240 | if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE) |
3241 | this_hdr->sh_flags |= SHF_EXCLUDE; | |
252b5132 | 3242 | |
d4730f92 BS |
3243 | /* If the section has relocs, set up a section header for the |
3244 | SHT_REL[A] section. If two relocation sections are required for | |
3245 | this section, it is up to the processor-specific back-end to | |
3246 | create the other. */ | |
3247 | if ((asect->flags & SEC_RELOC) != 0) | |
3248 | { | |
3249 | /* When doing a relocatable link, create both REL and RELA sections if | |
3250 | needed. */ | |
3251 | if (arg->link_info | |
3252 | /* Do the normal setup if we wouldn't create any sections here. */ | |
3253 | && esd->rel.count + esd->rela.count > 0 | |
0e1862bb L |
3254 | && (bfd_link_relocatable (arg->link_info) |
3255 | || arg->link_info->emitrelocations)) | |
d4730f92 BS |
3256 | { |
3257 | if (esd->rel.count && esd->rel.hdr == NULL | |
3e19fb8f L |
3258 | && !_bfd_elf_init_reloc_shdr (abfd, &esd->rel, name, FALSE, |
3259 | delay_st_name_p)) | |
d4730f92 BS |
3260 | { |
3261 | arg->failed = TRUE; | |
3262 | return; | |
3263 | } | |
3264 | if (esd->rela.count && esd->rela.hdr == NULL | |
3e19fb8f L |
3265 | && !_bfd_elf_init_reloc_shdr (abfd, &esd->rela, name, TRUE, |
3266 | delay_st_name_p)) | |
d4730f92 BS |
3267 | { |
3268 | arg->failed = TRUE; | |
3269 | return; | |
3270 | } | |
3271 | } | |
3272 | else if (!_bfd_elf_init_reloc_shdr (abfd, | |
3273 | (asect->use_rela_p | |
3274 | ? &esd->rela : &esd->rel), | |
f6fe1ccd | 3275 | name, |
3e19fb8f L |
3276 | asect->use_rela_p, |
3277 | delay_st_name_p)) | |
d4730f92 BS |
3278 | arg->failed = TRUE; |
3279 | } | |
3280 | ||
252b5132 | 3281 | /* Check for processor-specific section types. */ |
0414f35b | 3282 | sh_type = this_hdr->sh_type; |
e1fddb6b AO |
3283 | if (bed->elf_backend_fake_sections |
3284 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
d4730f92 | 3285 | arg->failed = TRUE; |
252b5132 | 3286 | |
42bb2e33 | 3287 | if (sh_type == SHT_NOBITS && asect->size != 0) |
0414f35b AM |
3288 | { |
3289 | /* Don't change the header type from NOBITS if we are being | |
42bb2e33 | 3290 | called for objcopy --only-keep-debug. */ |
0414f35b AM |
3291 | this_hdr->sh_type = sh_type; |
3292 | } | |
252b5132 RH |
3293 | } |
3294 | ||
bcacc0f5 AM |
3295 | /* Fill in the contents of a SHT_GROUP section. Called from |
3296 | _bfd_elf_compute_section_file_positions for gas, objcopy, and | |
3297 | when ELF targets use the generic linker, ld. Called for ld -r | |
3298 | from bfd_elf_final_link. */ | |
dbb410c3 | 3299 | |
1126897b | 3300 | void |
217aa764 | 3301 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 3302 | { |
a50b1753 | 3303 | bfd_boolean *failedptr = (bfd_boolean *) failedptrarg; |
9dce4196 | 3304 | asection *elt, *first; |
dbb410c3 | 3305 | unsigned char *loc; |
b34976b6 | 3306 | bfd_boolean gas; |
dbb410c3 | 3307 | |
7e4111ad L |
3308 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
3309 | elfxx-ia64.c. */ | |
3310 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
3311 | || *failedptr) |
3312 | return; | |
3313 | ||
bcacc0f5 AM |
3314 | if (elf_section_data (sec)->this_hdr.sh_info == 0) |
3315 | { | |
3316 | unsigned long symindx = 0; | |
3317 | ||
3318 | /* elf_group_id will have been set up by objcopy and the | |
3319 | generic linker. */ | |
3320 | if (elf_group_id (sec) != NULL) | |
3321 | symindx = elf_group_id (sec)->udata.i; | |
1126897b | 3322 | |
bcacc0f5 AM |
3323 | if (symindx == 0) |
3324 | { | |
3325 | /* If called from the assembler, swap_out_syms will have set up | |
3326 | elf_section_syms. */ | |
3327 | BFD_ASSERT (elf_section_syms (abfd) != NULL); | |
3328 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
3329 | } | |
3330 | elf_section_data (sec)->this_hdr.sh_info = symindx; | |
3331 | } | |
3332 | else if (elf_section_data (sec)->this_hdr.sh_info == (unsigned int) -2) | |
1126897b | 3333 | { |
bcacc0f5 AM |
3334 | /* The ELF backend linker sets sh_info to -2 when the group |
3335 | signature symbol is global, and thus the index can't be | |
3336 | set until all local symbols are output. */ | |
3337 | asection *igroup = elf_sec_group (elf_next_in_group (sec)); | |
3338 | struct bfd_elf_section_data *sec_data = elf_section_data (igroup); | |
3339 | unsigned long symndx = sec_data->this_hdr.sh_info; | |
3340 | unsigned long extsymoff = 0; | |
3341 | struct elf_link_hash_entry *h; | |
3342 | ||
3343 | if (!elf_bad_symtab (igroup->owner)) | |
3344 | { | |
3345 | Elf_Internal_Shdr *symtab_hdr; | |
3346 | ||
3347 | symtab_hdr = &elf_tdata (igroup->owner)->symtab_hdr; | |
3348 | extsymoff = symtab_hdr->sh_info; | |
3349 | } | |
3350 | h = elf_sym_hashes (igroup->owner)[symndx - extsymoff]; | |
3351 | while (h->root.type == bfd_link_hash_indirect | |
3352 | || h->root.type == bfd_link_hash_warning) | |
3353 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3354 | ||
3355 | elf_section_data (sec)->this_hdr.sh_info = h->indx; | |
1126897b | 3356 | } |
dbb410c3 | 3357 | |
1126897b | 3358 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 3359 | gas = TRUE; |
dbb410c3 AM |
3360 | if (sec->contents == NULL) |
3361 | { | |
b34976b6 | 3362 | gas = FALSE; |
a50b1753 | 3363 | sec->contents = (unsigned char *) bfd_alloc (abfd, sec->size); |
9dce4196 AM |
3364 | |
3365 | /* Arrange for the section to be written out. */ | |
3366 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
3367 | if (sec->contents == NULL) |
3368 | { | |
b34976b6 | 3369 | *failedptr = TRUE; |
dbb410c3 AM |
3370 | return; |
3371 | } | |
3372 | } | |
3373 | ||
eea6121a | 3374 | loc = sec->contents + sec->size; |
dbb410c3 | 3375 | |
9dce4196 AM |
3376 | /* Get the pointer to the first section in the group that gas |
3377 | squirreled away here. objcopy arranges for this to be set to the | |
3378 | start of the input section group. */ | |
3379 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
3380 | |
3381 | /* First element is a flag word. Rest of section is elf section | |
3382 | indices for all the sections of the group. Write them backwards | |
3383 | just to keep the group in the same order as given in .section | |
3384 | directives, not that it matters. */ | |
3385 | while (elt != NULL) | |
3386 | { | |
9dce4196 | 3387 | asection *s; |
9dce4196 | 3388 | |
9dce4196 | 3389 | s = elt; |
415f38a6 AM |
3390 | if (!gas) |
3391 | s = s->output_section; | |
3392 | if (s != NULL | |
3393 | && !bfd_is_abs_section (s)) | |
01e1a5bc | 3394 | { |
415f38a6 AM |
3395 | unsigned int idx = elf_section_data (s)->this_idx; |
3396 | ||
01e1a5bc | 3397 | loc -= 4; |
01e1a5bc NC |
3398 | H_PUT_32 (abfd, idx, loc); |
3399 | } | |
945906ff | 3400 | elt = elf_next_in_group (elt); |
9dce4196 AM |
3401 | if (elt == first) |
3402 | break; | |
dbb410c3 AM |
3403 | } |
3404 | ||
3d7f7666 | 3405 | if ((loc -= 4) != sec->contents) |
9dce4196 | 3406 | abort (); |
dbb410c3 | 3407 | |
9dce4196 | 3408 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
3409 | } |
3410 | ||
bd53a53a L |
3411 | /* Return the section which RELOC_SEC applies to. */ |
3412 | ||
3413 | asection * | |
3414 | _bfd_elf_get_reloc_section (asection *reloc_sec) | |
3415 | { | |
3416 | const char *name; | |
3417 | unsigned int type; | |
3418 | bfd *abfd; | |
3419 | ||
3420 | if (reloc_sec == NULL) | |
3421 | return NULL; | |
3422 | ||
3423 | type = elf_section_data (reloc_sec)->this_hdr.sh_type; | |
3424 | if (type != SHT_REL && type != SHT_RELA) | |
3425 | return NULL; | |
3426 | ||
3427 | /* We look up the section the relocs apply to by name. */ | |
3428 | name = reloc_sec->name; | |
3429 | if (type == SHT_REL) | |
3430 | name += 4; | |
3431 | else | |
3432 | name += 5; | |
3433 | ||
3434 | /* If a target needs .got.plt section, relocations in rela.plt/rel.plt | |
3435 | section apply to .got.plt section. */ | |
3436 | abfd = reloc_sec->owner; | |
3437 | if (get_elf_backend_data (abfd)->want_got_plt | |
3438 | && strcmp (name, ".plt") == 0) | |
87070c08 AM |
3439 | { |
3440 | /* .got.plt is a linker created input section. It may be mapped | |
3441 | to some other output section. Try two likely sections. */ | |
3442 | name = ".got.plt"; | |
3443 | reloc_sec = bfd_get_section_by_name (abfd, name); | |
3444 | if (reloc_sec != NULL) | |
3445 | return reloc_sec; | |
3446 | name = ".got"; | |
3447 | } | |
bd53a53a L |
3448 | |
3449 | reloc_sec = bfd_get_section_by_name (abfd, name); | |
3450 | return reloc_sec; | |
3451 | } | |
3452 | ||
252b5132 RH |
3453 | /* Assign all ELF section numbers. The dummy first section is handled here |
3454 | too. The link/info pointers for the standard section types are filled | |
3455 | in here too, while we're at it. */ | |
3456 | ||
b34976b6 | 3457 | static bfd_boolean |
da9f89d4 | 3458 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
3459 | { |
3460 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
3461 | asection *sec; | |
3e19fb8f | 3462 | unsigned int section_number; |
252b5132 | 3463 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 3464 | struct bfd_elf_section_data *d; |
3516e984 | 3465 | bfd_boolean need_symtab; |
252b5132 RH |
3466 | |
3467 | section_number = 1; | |
3468 | ||
2b0f7ef9 JJ |
3469 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
3470 | ||
da9f89d4 | 3471 | /* SHT_GROUP sections are in relocatable files only. */ |
0e1862bb | 3472 | if (link_info == NULL || bfd_link_relocatable (link_info)) |
252b5132 | 3473 | { |
14f2c699 L |
3474 | bfd_size_type reloc_count = 0; |
3475 | ||
da9f89d4 | 3476 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 3477 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 3478 | { |
5daa8fe7 | 3479 | d = elf_section_data (sec); |
da9f89d4 L |
3480 | |
3481 | if (d->this_hdr.sh_type == SHT_GROUP) | |
08a40648 | 3482 | { |
5daa8fe7 | 3483 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
3484 | { |
3485 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 3486 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 3487 | abfd->section_count--; |
da9f89d4 | 3488 | } |
08a40648 | 3489 | else |
4fbb74a6 | 3490 | d->this_idx = section_number++; |
da9f89d4 | 3491 | } |
14f2c699 L |
3492 | |
3493 | /* Count relocations. */ | |
3494 | reloc_count += sec->reloc_count; | |
47cc2cf5 | 3495 | } |
14f2c699 L |
3496 | |
3497 | /* Clear HAS_RELOC if there are no relocations. */ | |
3498 | if (reloc_count == 0) | |
3499 | abfd->flags &= ~HAS_RELOC; | |
47cc2cf5 PB |
3500 | } |
3501 | ||
3502 | for (sec = abfd->sections; sec; sec = sec->next) | |
3503 | { | |
3504 | d = elf_section_data (sec); | |
3505 | ||
3506 | if (d->this_hdr.sh_type != SHT_GROUP) | |
4fbb74a6 | 3507 | d->this_idx = section_number++; |
3e19fb8f L |
3508 | if (d->this_hdr.sh_name != (unsigned int) -1) |
3509 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); | |
d4730f92 | 3510 | if (d->rel.hdr) |
2b0f7ef9 | 3511 | { |
d4730f92 | 3512 | d->rel.idx = section_number++; |
3e19fb8f L |
3513 | if (d->rel.hdr->sh_name != (unsigned int) -1) |
3514 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel.hdr->sh_name); | |
2b0f7ef9 | 3515 | } |
d4730f92 BS |
3516 | else |
3517 | d->rel.idx = 0; | |
23bc299b | 3518 | |
d4730f92 | 3519 | if (d->rela.hdr) |
2b0f7ef9 | 3520 | { |
d4730f92 | 3521 | d->rela.idx = section_number++; |
3e19fb8f L |
3522 | if (d->rela.hdr->sh_name != (unsigned int) -1) |
3523 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rela.hdr->sh_name); | |
2b0f7ef9 | 3524 | } |
23bc299b | 3525 | else |
d4730f92 | 3526 | d->rela.idx = 0; |
252b5132 RH |
3527 | } |
3528 | ||
12bd6957 | 3529 | elf_shstrtab_sec (abfd) = section_number++; |
2b0f7ef9 | 3530 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
12bd6957 | 3531 | elf_elfheader (abfd)->e_shstrndx = elf_shstrtab_sec (abfd); |
252b5132 | 3532 | |
3516e984 L |
3533 | need_symtab = (bfd_get_symcount (abfd) > 0 |
3534 | || (link_info == NULL | |
3535 | && ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC)) | |
3536 | == HAS_RELOC))); | |
3537 | if (need_symtab) | |
252b5132 | 3538 | { |
12bd6957 | 3539 | elf_onesymtab (abfd) = section_number++; |
2b0f7ef9 | 3540 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
4fbb74a6 | 3541 | if (section_number > ((SHN_LORESERVE - 2) & 0xFFFF)) |
9ad5cbcf | 3542 | { |
6a40cf0c NC |
3543 | elf_section_list * entry; |
3544 | ||
3545 | BFD_ASSERT (elf_symtab_shndx_list (abfd) == NULL); | |
3546 | ||
3547 | entry = bfd_zalloc (abfd, sizeof * entry); | |
3548 | entry->ndx = section_number++; | |
3549 | elf_symtab_shndx_list (abfd) = entry; | |
3550 | entry->hdr.sh_name | |
9ad5cbcf | 3551 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
b34976b6 | 3552 | ".symtab_shndx", FALSE); |
6a40cf0c | 3553 | if (entry->hdr.sh_name == (unsigned int) -1) |
b34976b6 | 3554 | return FALSE; |
9ad5cbcf | 3555 | } |
12bd6957 | 3556 | elf_strtab_sec (abfd) = section_number++; |
2b0f7ef9 | 3557 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
3558 | } |
3559 | ||
1c52a645 L |
3560 | if (section_number >= SHN_LORESERVE) |
3561 | { | |
3562 | _bfd_error_handler (_("%B: too many sections: %u"), | |
3563 | abfd, section_number); | |
3564 | return FALSE; | |
3565 | } | |
3566 | ||
9ad5cbcf | 3567 | elf_numsections (abfd) = section_number; |
252b5132 RH |
3568 | elf_elfheader (abfd)->e_shnum = section_number; |
3569 | ||
3570 | /* Set up the list of section header pointers, in agreement with the | |
3571 | indices. */ | |
a50b1753 NC |
3572 | i_shdrp = (Elf_Internal_Shdr **) bfd_zalloc2 (abfd, section_number, |
3573 | sizeof (Elf_Internal_Shdr *)); | |
252b5132 | 3574 | if (i_shdrp == NULL) |
b34976b6 | 3575 | return FALSE; |
252b5132 | 3576 | |
a50b1753 NC |
3577 | i_shdrp[0] = (Elf_Internal_Shdr *) bfd_zalloc (abfd, |
3578 | sizeof (Elf_Internal_Shdr)); | |
252b5132 RH |
3579 | if (i_shdrp[0] == NULL) |
3580 | { | |
3581 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 3582 | return FALSE; |
252b5132 | 3583 | } |
252b5132 RH |
3584 | |
3585 | elf_elfsections (abfd) = i_shdrp; | |
3586 | ||
12bd6957 | 3587 | i_shdrp[elf_shstrtab_sec (abfd)] = &t->shstrtab_hdr; |
3516e984 | 3588 | if (need_symtab) |
252b5132 | 3589 | { |
12bd6957 | 3590 | i_shdrp[elf_onesymtab (abfd)] = &t->symtab_hdr; |
4fbb74a6 | 3591 | if (elf_numsections (abfd) > (SHN_LORESERVE & 0xFFFF)) |
9ad5cbcf | 3592 | { |
6a40cf0c NC |
3593 | elf_section_list * entry = elf_symtab_shndx_list (abfd); |
3594 | BFD_ASSERT (entry != NULL); | |
3595 | i_shdrp[entry->ndx] = & entry->hdr; | |
3596 | entry->hdr.sh_link = elf_onesymtab (abfd); | |
9ad5cbcf | 3597 | } |
12bd6957 AM |
3598 | i_shdrp[elf_strtab_sec (abfd)] = &t->strtab_hdr; |
3599 | t->symtab_hdr.sh_link = elf_strtab_sec (abfd); | |
252b5132 | 3600 | } |
38ce5b11 | 3601 | |
252b5132 RH |
3602 | for (sec = abfd->sections; sec; sec = sec->next) |
3603 | { | |
252b5132 | 3604 | asection *s; |
252b5132 | 3605 | |
91d6fa6a NC |
3606 | d = elf_section_data (sec); |
3607 | ||
252b5132 | 3608 | i_shdrp[d->this_idx] = &d->this_hdr; |
d4730f92 BS |
3609 | if (d->rel.idx != 0) |
3610 | i_shdrp[d->rel.idx] = d->rel.hdr; | |
3611 | if (d->rela.idx != 0) | |
3612 | i_shdrp[d->rela.idx] = d->rela.hdr; | |
252b5132 RH |
3613 | |
3614 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
3615 | ||
3616 | /* sh_link of a reloc section is the section index of the symbol | |
3617 | table. sh_info is the section index of the section to which | |
3618 | the relocation entries apply. */ | |
d4730f92 | 3619 | if (d->rel.idx != 0) |
252b5132 | 3620 | { |
12bd6957 | 3621 | d->rel.hdr->sh_link = elf_onesymtab (abfd); |
d4730f92 | 3622 | d->rel.hdr->sh_info = d->this_idx; |
9ef5d938 | 3623 | d->rel.hdr->sh_flags |= SHF_INFO_LINK; |
252b5132 | 3624 | } |
d4730f92 | 3625 | if (d->rela.idx != 0) |
23bc299b | 3626 | { |
12bd6957 | 3627 | d->rela.hdr->sh_link = elf_onesymtab (abfd); |
d4730f92 | 3628 | d->rela.hdr->sh_info = d->this_idx; |
9ef5d938 | 3629 | d->rela.hdr->sh_flags |= SHF_INFO_LINK; |
23bc299b | 3630 | } |
252b5132 | 3631 | |
38ce5b11 L |
3632 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
3633 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
3634 | { | |
3635 | s = elf_linked_to_section (sec); | |
3636 | if (s) | |
38ce5b11 | 3637 | { |
f2876037 | 3638 | /* elf_linked_to_section points to the input section. */ |
ccd2ec6a | 3639 | if (link_info != NULL) |
38ce5b11 | 3640 | { |
f2876037 | 3641 | /* Check discarded linkonce section. */ |
dbaa2011 | 3642 | if (discarded_section (s)) |
38ce5b11 | 3643 | { |
ccd2ec6a L |
3644 | asection *kept; |
3645 | (*_bfd_error_handler) | |
3646 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
3647 | abfd, d->this_hdr.bfd_section, | |
3648 | s, s->owner); | |
3649 | /* Point to the kept section if it has the same | |
3650 | size as the discarded one. */ | |
c0f00686 | 3651 | kept = _bfd_elf_check_kept_section (s, link_info); |
ccd2ec6a | 3652 | if (kept == NULL) |
185d09ad | 3653 | { |
ccd2ec6a L |
3654 | bfd_set_error (bfd_error_bad_value); |
3655 | return FALSE; | |
185d09ad | 3656 | } |
ccd2ec6a | 3657 | s = kept; |
38ce5b11 | 3658 | } |
e424ecc8 | 3659 | |
ccd2ec6a L |
3660 | s = s->output_section; |
3661 | BFD_ASSERT (s != NULL); | |
38ce5b11 | 3662 | } |
f2876037 L |
3663 | else |
3664 | { | |
3665 | /* Handle objcopy. */ | |
3666 | if (s->output_section == NULL) | |
3667 | { | |
3668 | (*_bfd_error_handler) | |
3669 | (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"), | |
3670 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
3671 | bfd_set_error (bfd_error_bad_value); | |
3672 | return FALSE; | |
3673 | } | |
3674 | s = s->output_section; | |
3675 | } | |
ccd2ec6a L |
3676 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; |
3677 | } | |
3678 | else | |
3679 | { | |
3680 | /* PR 290: | |
3681 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
3682 | SHF_LINK_ORDER. But it doesn't set the sh_link or | |
3683 | sh_info fields. Hence we could get the situation | |
08a40648 | 3684 | where s is NULL. */ |
ccd2ec6a L |
3685 | const struct elf_backend_data *bed |
3686 | = get_elf_backend_data (abfd); | |
3687 | if (bed->link_order_error_handler) | |
3688 | bed->link_order_error_handler | |
3689 | (_("%B: warning: sh_link not set for section `%A'"), | |
3690 | abfd, sec); | |
38ce5b11 L |
3691 | } |
3692 | } | |
3693 | ||
252b5132 RH |
3694 | switch (d->this_hdr.sh_type) |
3695 | { | |
3696 | case SHT_REL: | |
3697 | case SHT_RELA: | |
3698 | /* A reloc section which we are treating as a normal BFD | |
3699 | section. sh_link is the section index of the symbol | |
3700 | table. sh_info is the section index of the section to | |
3701 | which the relocation entries apply. We assume that an | |
3702 | allocated reloc section uses the dynamic symbol table. | |
3703 | FIXME: How can we be sure? */ | |
3704 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3705 | if (s != NULL) | |
3706 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3707 | ||
bd53a53a | 3708 | s = get_elf_backend_data (abfd)->get_reloc_section (sec); |
252b5132 | 3709 | if (s != NULL) |
9ef5d938 L |
3710 | { |
3711 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3712 | d->this_hdr.sh_flags |= SHF_INFO_LINK; | |
3713 | } | |
252b5132 RH |
3714 | break; |
3715 | ||
3716 | case SHT_STRTAB: | |
3717 | /* We assume that a section named .stab*str is a stabs | |
3718 | string section. We look for a section with the same name | |
3719 | but without the trailing ``str'', and set its sh_link | |
3720 | field to point to this section. */ | |
0112cd26 | 3721 | if (CONST_STRNEQ (sec->name, ".stab") |
252b5132 RH |
3722 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) |
3723 | { | |
3724 | size_t len; | |
3725 | char *alc; | |
3726 | ||
3727 | len = strlen (sec->name); | |
a50b1753 | 3728 | alc = (char *) bfd_malloc (len - 2); |
252b5132 | 3729 | if (alc == NULL) |
b34976b6 | 3730 | return FALSE; |
d4c88bbb | 3731 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3732 | alc[len - 3] = '\0'; |
3733 | s = bfd_get_section_by_name (abfd, alc); | |
3734 | free (alc); | |
3735 | if (s != NULL) | |
3736 | { | |
3737 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3738 | ||
3739 | /* This is a .stab section. */ | |
0594c12d AM |
3740 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3741 | elf_section_data (s)->this_hdr.sh_entsize | |
3742 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3743 | } |
3744 | } | |
3745 | break; | |
3746 | ||
3747 | case SHT_DYNAMIC: | |
3748 | case SHT_DYNSYM: | |
3749 | case SHT_GNU_verneed: | |
3750 | case SHT_GNU_verdef: | |
3751 | /* sh_link is the section header index of the string table | |
3752 | used for the dynamic entries, or the symbol table, or the | |
3753 | version strings. */ | |
3754 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3755 | if (s != NULL) | |
3756 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3757 | break; | |
3758 | ||
7f1204bb JJ |
3759 | case SHT_GNU_LIBLIST: |
3760 | /* sh_link is the section header index of the prelink library | |
08a40648 AM |
3761 | list used for the dynamic entries, or the symbol table, or |
3762 | the version strings. */ | |
7f1204bb JJ |
3763 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) |
3764 | ? ".dynstr" : ".gnu.libstr"); | |
3765 | if (s != NULL) | |
3766 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3767 | break; | |
3768 | ||
252b5132 | 3769 | case SHT_HASH: |
fdc90cb4 | 3770 | case SHT_GNU_HASH: |
252b5132 RH |
3771 | case SHT_GNU_versym: |
3772 | /* sh_link is the section header index of the symbol table | |
3773 | this hash table or version table is for. */ | |
3774 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3775 | if (s != NULL) | |
3776 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3777 | break; | |
dbb410c3 AM |
3778 | |
3779 | case SHT_GROUP: | |
12bd6957 | 3780 | d->this_hdr.sh_link = elf_onesymtab (abfd); |
252b5132 RH |
3781 | } |
3782 | } | |
3783 | ||
3e19fb8f L |
3784 | /* Delay setting sh_name to _bfd_elf_write_object_contents so that |
3785 | _bfd_elf_assign_file_positions_for_non_load can convert DWARF | |
3786 | debug section name from .debug_* to .zdebug_* if needed. */ | |
3787 | ||
b34976b6 | 3788 | return TRUE; |
252b5132 RH |
3789 | } |
3790 | ||
5372391b | 3791 | static bfd_boolean |
217aa764 | 3792 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3793 | { |
3794 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3795 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3796 | if (bed->elf_backend_sym_is_global) |
3797 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 | 3798 | |
e47bf690 | 3799 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0 |
252b5132 RH |
3800 | || bfd_is_und_section (bfd_get_section (sym)) |
3801 | || bfd_is_com_section (bfd_get_section (sym))); | |
3802 | } | |
3803 | ||
5372391b | 3804 | /* Don't output section symbols for sections that are not going to be |
c6d8cab4 | 3805 | output, that are duplicates or there is no BFD section. */ |
5372391b AM |
3806 | |
3807 | static bfd_boolean | |
3808 | ignore_section_sym (bfd *abfd, asymbol *sym) | |
3809 | { | |
c6d8cab4 L |
3810 | elf_symbol_type *type_ptr; |
3811 | ||
3812 | if ((sym->flags & BSF_SECTION_SYM) == 0) | |
3813 | return FALSE; | |
3814 | ||
3815 | type_ptr = elf_symbol_from (abfd, sym); | |
3816 | return ((type_ptr != NULL | |
3817 | && type_ptr->internal_elf_sym.st_shndx != 0 | |
3818 | && bfd_is_abs_section (sym->section)) | |
3819 | || !(sym->section->owner == abfd | |
0f0a5e58 | 3820 | || (sym->section->output_section->owner == abfd |
2633a79c AM |
3821 | && sym->section->output_offset == 0) |
3822 | || bfd_is_abs_section (sym->section))); | |
5372391b AM |
3823 | } |
3824 | ||
2633a79c AM |
3825 | /* Map symbol from it's internal number to the external number, moving |
3826 | all local symbols to be at the head of the list. */ | |
3827 | ||
b34976b6 | 3828 | static bfd_boolean |
12bd6957 | 3829 | elf_map_symbols (bfd *abfd, unsigned int *pnum_locals) |
252b5132 | 3830 | { |
dc810e39 | 3831 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3832 | asymbol **syms = bfd_get_outsymbols (abfd); |
3833 | asymbol **sect_syms; | |
dc810e39 AM |
3834 | unsigned int num_locals = 0; |
3835 | unsigned int num_globals = 0; | |
3836 | unsigned int num_locals2 = 0; | |
3837 | unsigned int num_globals2 = 0; | |
7292b3ac | 3838 | unsigned int max_index = 0; |
dc810e39 | 3839 | unsigned int idx; |
252b5132 RH |
3840 | asection *asect; |
3841 | asymbol **new_syms; | |
252b5132 RH |
3842 | |
3843 | #ifdef DEBUG | |
3844 | fprintf (stderr, "elf_map_symbols\n"); | |
3845 | fflush (stderr); | |
3846 | #endif | |
3847 | ||
252b5132 RH |
3848 | for (asect = abfd->sections; asect; asect = asect->next) |
3849 | { | |
3850 | if (max_index < asect->index) | |
3851 | max_index = asect->index; | |
3852 | } | |
3853 | ||
3854 | max_index++; | |
a50b1753 | 3855 | sect_syms = (asymbol **) bfd_zalloc2 (abfd, max_index, sizeof (asymbol *)); |
252b5132 | 3856 | if (sect_syms == NULL) |
b34976b6 | 3857 | return FALSE; |
252b5132 | 3858 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3859 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3860 | |
079e9a2f AM |
3861 | /* Init sect_syms entries for any section symbols we have already |
3862 | decided to output. */ | |
252b5132 RH |
3863 | for (idx = 0; idx < symcount; idx++) |
3864 | { | |
dc810e39 | 3865 | asymbol *sym = syms[idx]; |
c044fabd | 3866 | |
252b5132 | 3867 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
0f0a5e58 | 3868 | && sym->value == 0 |
2633a79c AM |
3869 | && !ignore_section_sym (abfd, sym) |
3870 | && !bfd_is_abs_section (sym->section)) | |
252b5132 | 3871 | { |
5372391b | 3872 | asection *sec = sym->section; |
252b5132 | 3873 | |
5372391b AM |
3874 | if (sec->owner != abfd) |
3875 | sec = sec->output_section; | |
252b5132 | 3876 | |
5372391b | 3877 | sect_syms[sec->index] = syms[idx]; |
252b5132 RH |
3878 | } |
3879 | } | |
3880 | ||
252b5132 RH |
3881 | /* Classify all of the symbols. */ |
3882 | for (idx = 0; idx < symcount; idx++) | |
3883 | { | |
2633a79c | 3884 | if (sym_is_global (abfd, syms[idx])) |
252b5132 | 3885 | num_globals++; |
2633a79c AM |
3886 | else if (!ignore_section_sym (abfd, syms[idx])) |
3887 | num_locals++; | |
252b5132 | 3888 | } |
079e9a2f | 3889 | |
5372391b | 3890 | /* We will be adding a section symbol for each normal BFD section. Most |
079e9a2f AM |
3891 | sections will already have a section symbol in outsymbols, but |
3892 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3893 | at least in that case. */ | |
252b5132 RH |
3894 | for (asect = abfd->sections; asect; asect = asect->next) |
3895 | { | |
079e9a2f | 3896 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3897 | { |
079e9a2f | 3898 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3899 | num_locals++; |
3900 | else | |
3901 | num_globals++; | |
252b5132 RH |
3902 | } |
3903 | } | |
3904 | ||
3905 | /* Now sort the symbols so the local symbols are first. */ | |
a50b1753 NC |
3906 | new_syms = (asymbol **) bfd_alloc2 (abfd, num_locals + num_globals, |
3907 | sizeof (asymbol *)); | |
dc810e39 | 3908 | |
252b5132 | 3909 | if (new_syms == NULL) |
b34976b6 | 3910 | return FALSE; |
252b5132 RH |
3911 | |
3912 | for (idx = 0; idx < symcount; idx++) | |
3913 | { | |
3914 | asymbol *sym = syms[idx]; | |
dc810e39 | 3915 | unsigned int i; |
252b5132 | 3916 | |
2633a79c AM |
3917 | if (sym_is_global (abfd, sym)) |
3918 | i = num_locals + num_globals2++; | |
3919 | else if (!ignore_section_sym (abfd, sym)) | |
252b5132 RH |
3920 | i = num_locals2++; |
3921 | else | |
2633a79c | 3922 | continue; |
252b5132 RH |
3923 | new_syms[i] = sym; |
3924 | sym->udata.i = i + 1; | |
3925 | } | |
3926 | for (asect = abfd->sections; asect; asect = asect->next) | |
3927 | { | |
079e9a2f | 3928 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3929 | { |
079e9a2f | 3930 | asymbol *sym = asect->symbol; |
dc810e39 | 3931 | unsigned int i; |
252b5132 | 3932 | |
079e9a2f | 3933 | sect_syms[asect->index] = sym; |
252b5132 RH |
3934 | if (!sym_is_global (abfd, sym)) |
3935 | i = num_locals2++; | |
3936 | else | |
3937 | i = num_locals + num_globals2++; | |
3938 | new_syms[i] = sym; | |
3939 | sym->udata.i = i + 1; | |
3940 | } | |
3941 | } | |
3942 | ||
3943 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3944 | ||
12bd6957 | 3945 | *pnum_locals = num_locals; |
b34976b6 | 3946 | return TRUE; |
252b5132 RH |
3947 | } |
3948 | ||
3949 | /* Align to the maximum file alignment that could be required for any | |
3950 | ELF data structure. */ | |
3951 | ||
268b6b39 | 3952 | static inline file_ptr |
217aa764 | 3953 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3954 | { |
3955 | return (off + align - 1) & ~(align - 1); | |
3956 | } | |
3957 | ||
3958 | /* Assign a file position to a section, optionally aligning to the | |
3959 | required section alignment. */ | |
3960 | ||
217aa764 AM |
3961 | file_ptr |
3962 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3963 | file_ptr offset, | |
3964 | bfd_boolean align) | |
252b5132 | 3965 | { |
72de5009 AM |
3966 | if (align && i_shdrp->sh_addralign > 1) |
3967 | offset = BFD_ALIGN (offset, i_shdrp->sh_addralign); | |
252b5132 RH |
3968 | i_shdrp->sh_offset = offset; |
3969 | if (i_shdrp->bfd_section != NULL) | |
3970 | i_shdrp->bfd_section->filepos = offset; | |
3971 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3972 | offset += i_shdrp->sh_size; | |
3973 | return offset; | |
3974 | } | |
3975 | ||
3976 | /* Compute the file positions we are going to put the sections at, and | |
3977 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3978 | is not NULL, this is being called by the ELF backend linker. */ | |
3979 | ||
b34976b6 | 3980 | bfd_boolean |
217aa764 AM |
3981 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3982 | struct bfd_link_info *link_info) | |
252b5132 | 3983 | { |
9c5bfbb7 | 3984 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
d4730f92 | 3985 | struct fake_section_arg fsargs; |
b34976b6 | 3986 | bfd_boolean failed; |
ef10c3ac | 3987 | struct elf_strtab_hash *strtab = NULL; |
252b5132 | 3988 | Elf_Internal_Shdr *shstrtab_hdr; |
3516e984 | 3989 | bfd_boolean need_symtab; |
252b5132 RH |
3990 | |
3991 | if (abfd->output_has_begun) | |
b34976b6 | 3992 | return TRUE; |
252b5132 RH |
3993 | |
3994 | /* Do any elf backend specific processing first. */ | |
3995 | if (bed->elf_backend_begin_write_processing) | |
3996 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3997 | ||
3998 | if (! prep_headers (abfd)) | |
b34976b6 | 3999 | return FALSE; |
252b5132 | 4000 | |
e6c51ed4 | 4001 | /* Post process the headers if necessary. */ |
78245035 | 4002 | (*bed->elf_backend_post_process_headers) (abfd, link_info); |
e6c51ed4 | 4003 | |
d4730f92 BS |
4004 | fsargs.failed = FALSE; |
4005 | fsargs.link_info = link_info; | |
4006 | bfd_map_over_sections (abfd, elf_fake_sections, &fsargs); | |
4007 | if (fsargs.failed) | |
b34976b6 | 4008 | return FALSE; |
252b5132 | 4009 | |
da9f89d4 | 4010 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 4011 | return FALSE; |
252b5132 RH |
4012 | |
4013 | /* The backend linker builds symbol table information itself. */ | |
3516e984 L |
4014 | need_symtab = (link_info == NULL |
4015 | && (bfd_get_symcount (abfd) > 0 | |
4016 | || ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC)) | |
4017 | == HAS_RELOC))); | |
4018 | if (need_symtab) | |
252b5132 RH |
4019 | { |
4020 | /* Non-zero if doing a relocatable link. */ | |
4021 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
4022 | ||
4023 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 4024 | return FALSE; |
252b5132 RH |
4025 | } |
4026 | ||
d4730f92 | 4027 | failed = FALSE; |
1126897b | 4028 | if (link_info == NULL) |
dbb410c3 | 4029 | { |
1126897b | 4030 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 4031 | if (failed) |
b34976b6 | 4032 | return FALSE; |
dbb410c3 AM |
4033 | } |
4034 | ||
252b5132 RH |
4035 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
4036 | /* sh_name was set in prep_headers. */ | |
4037 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
84865015 | 4038 | shstrtab_hdr->sh_flags = bed->elf_strtab_flags; |
252b5132 | 4039 | shstrtab_hdr->sh_addr = 0; |
946748d5 | 4040 | /* sh_size is set in _bfd_elf_assign_file_positions_for_non_load. */ |
252b5132 RH |
4041 | shstrtab_hdr->sh_entsize = 0; |
4042 | shstrtab_hdr->sh_link = 0; | |
4043 | shstrtab_hdr->sh_info = 0; | |
3e19fb8f | 4044 | /* sh_offset is set in _bfd_elf_assign_file_positions_for_non_load. */ |
252b5132 RH |
4045 | shstrtab_hdr->sh_addralign = 1; |
4046 | ||
c84fca4d | 4047 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 4048 | return FALSE; |
252b5132 | 4049 | |
3516e984 | 4050 | if (need_symtab) |
252b5132 RH |
4051 | { |
4052 | file_ptr off; | |
4053 | Elf_Internal_Shdr *hdr; | |
4054 | ||
12bd6957 | 4055 | off = elf_next_file_pos (abfd); |
252b5132 | 4056 | |
6a40cf0c | 4057 | hdr = & elf_symtab_hdr (abfd); |
b34976b6 | 4058 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4059 | |
6a40cf0c NC |
4060 | if (elf_symtab_shndx_list (abfd) != NULL) |
4061 | { | |
4062 | hdr = & elf_symtab_shndx_list (abfd)->hdr; | |
4063 | if (hdr->sh_size != 0) | |
4064 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); | |
4065 | /* FIXME: What about other symtab_shndx sections in the list ? */ | |
4066 | } | |
9ad5cbcf | 4067 | |
252b5132 | 4068 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 4069 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4070 | |
12bd6957 | 4071 | elf_next_file_pos (abfd) = off; |
252b5132 RH |
4072 | |
4073 | /* Now that we know where the .strtab section goes, write it | |
08a40648 | 4074 | out. */ |
252b5132 | 4075 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
ef10c3ac | 4076 | || ! _bfd_elf_strtab_emit (abfd, strtab)) |
b34976b6 | 4077 | return FALSE; |
ef10c3ac | 4078 | _bfd_elf_strtab_free (strtab); |
252b5132 RH |
4079 | } |
4080 | ||
b34976b6 | 4081 | abfd->output_has_begun = TRUE; |
252b5132 | 4082 | |
b34976b6 | 4083 | return TRUE; |
252b5132 RH |
4084 | } |
4085 | ||
8ded5a0f AM |
4086 | /* Make an initial estimate of the size of the program header. If we |
4087 | get the number wrong here, we'll redo section placement. */ | |
4088 | ||
4089 | static bfd_size_type | |
4090 | get_program_header_size (bfd *abfd, struct bfd_link_info *info) | |
4091 | { | |
4092 | size_t segs; | |
4093 | asection *s; | |
2b05f1b7 | 4094 | const struct elf_backend_data *bed; |
8ded5a0f AM |
4095 | |
4096 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
4097 | and one for data. */ | |
4098 | segs = 2; | |
4099 | ||
4100 | s = bfd_get_section_by_name (abfd, ".interp"); | |
4101 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
4102 | { | |
4103 | /* If we have a loadable interpreter section, we need a | |
4104 | PT_INTERP segment. In this case, assume we also need a | |
4105 | PT_PHDR segment, although that may not be true for all | |
4106 | targets. */ | |
4107 | segs += 2; | |
4108 | } | |
4109 | ||
4110 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
4111 | { | |
4112 | /* We need a PT_DYNAMIC segment. */ | |
4113 | ++segs; | |
f210dcff | 4114 | } |
08a40648 | 4115 | |
ceae84aa | 4116 | if (info != NULL && info->relro) |
f210dcff L |
4117 | { |
4118 | /* We need a PT_GNU_RELRO segment. */ | |
4119 | ++segs; | |
8ded5a0f AM |
4120 | } |
4121 | ||
12bd6957 | 4122 | if (elf_eh_frame_hdr (abfd)) |
8ded5a0f AM |
4123 | { |
4124 | /* We need a PT_GNU_EH_FRAME segment. */ | |
4125 | ++segs; | |
4126 | } | |
4127 | ||
12bd6957 | 4128 | if (elf_stack_flags (abfd)) |
8ded5a0f | 4129 | { |
2b05f1b7 L |
4130 | /* We need a PT_GNU_STACK segment. */ |
4131 | ++segs; | |
4132 | } | |
94b11780 | 4133 | |
2b05f1b7 L |
4134 | for (s = abfd->sections; s != NULL; s = s->next) |
4135 | { | |
8ded5a0f | 4136 | if ((s->flags & SEC_LOAD) != 0 |
0112cd26 | 4137 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f AM |
4138 | { |
4139 | /* We need a PT_NOTE segment. */ | |
4140 | ++segs; | |
1c5265b5 JJ |
4141 | /* Try to create just one PT_NOTE segment |
4142 | for all adjacent loadable .note* sections. | |
4143 | gABI requires that within a PT_NOTE segment | |
4144 | (and also inside of each SHT_NOTE section) | |
4145 | each note is padded to a multiple of 4 size, | |
4146 | so we check whether the sections are correctly | |
4147 | aligned. */ | |
4148 | if (s->alignment_power == 2) | |
4149 | while (s->next != NULL | |
4150 | && s->next->alignment_power == 2 | |
4151 | && (s->next->flags & SEC_LOAD) != 0 | |
4152 | && CONST_STRNEQ (s->next->name, ".note")) | |
4153 | s = s->next; | |
8ded5a0f AM |
4154 | } |
4155 | } | |
4156 | ||
4157 | for (s = abfd->sections; s != NULL; s = s->next) | |
4158 | { | |
4159 | if (s->flags & SEC_THREAD_LOCAL) | |
4160 | { | |
4161 | /* We need a PT_TLS segment. */ | |
4162 | ++segs; | |
4163 | break; | |
4164 | } | |
4165 | } | |
4166 | ||
4167 | /* Let the backend count up any program headers it might need. */ | |
2b05f1b7 | 4168 | bed = get_elf_backend_data (abfd); |
8ded5a0f AM |
4169 | if (bed->elf_backend_additional_program_headers) |
4170 | { | |
4171 | int a; | |
4172 | ||
4173 | a = (*bed->elf_backend_additional_program_headers) (abfd, info); | |
4174 | if (a == -1) | |
4175 | abort (); | |
4176 | segs += a; | |
4177 | } | |
4178 | ||
4179 | return segs * bed->s->sizeof_phdr; | |
4180 | } | |
4181 | ||
2ea37f1c NC |
4182 | /* Find the segment that contains the output_section of section. */ |
4183 | ||
4184 | Elf_Internal_Phdr * | |
4185 | _bfd_elf_find_segment_containing_section (bfd * abfd, asection * section) | |
4186 | { | |
4187 | struct elf_segment_map *m; | |
4188 | Elf_Internal_Phdr *p; | |
4189 | ||
12bd6957 | 4190 | for (m = elf_seg_map (abfd), p = elf_tdata (abfd)->phdr; |
2ea37f1c NC |
4191 | m != NULL; |
4192 | m = m->next, p++) | |
4193 | { | |
4194 | int i; | |
4195 | ||
4196 | for (i = m->count - 1; i >= 0; i--) | |
4197 | if (m->sections[i] == section) | |
4198 | return p; | |
4199 | } | |
4200 | ||
4201 | return NULL; | |
4202 | } | |
4203 | ||
252b5132 RH |
4204 | /* Create a mapping from a set of sections to a program segment. */ |
4205 | ||
217aa764 AM |
4206 | static struct elf_segment_map * |
4207 | make_mapping (bfd *abfd, | |
4208 | asection **sections, | |
4209 | unsigned int from, | |
4210 | unsigned int to, | |
4211 | bfd_boolean phdr) | |
252b5132 RH |
4212 | { |
4213 | struct elf_segment_map *m; | |
4214 | unsigned int i; | |
4215 | asection **hdrpp; | |
dc810e39 | 4216 | bfd_size_type amt; |
252b5132 | 4217 | |
dc810e39 AM |
4218 | amt = sizeof (struct elf_segment_map); |
4219 | amt += (to - from - 1) * sizeof (asection *); | |
a50b1753 | 4220 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
252b5132 RH |
4221 | if (m == NULL) |
4222 | return NULL; | |
4223 | m->next = NULL; | |
4224 | m->p_type = PT_LOAD; | |
4225 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
4226 | m->sections[i - from] = *hdrpp; | |
4227 | m->count = to - from; | |
4228 | ||
4229 | if (from == 0 && phdr) | |
4230 | { | |
4231 | /* Include the headers in the first PT_LOAD segment. */ | |
4232 | m->includes_filehdr = 1; | |
4233 | m->includes_phdrs = 1; | |
4234 | } | |
4235 | ||
4236 | return m; | |
4237 | } | |
4238 | ||
229fcec5 MM |
4239 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
4240 | on failure. */ | |
4241 | ||
4242 | struct elf_segment_map * | |
4243 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
4244 | { | |
4245 | struct elf_segment_map *m; | |
4246 | ||
a50b1753 NC |
4247 | m = (struct elf_segment_map *) bfd_zalloc (abfd, |
4248 | sizeof (struct elf_segment_map)); | |
229fcec5 MM |
4249 | if (m == NULL) |
4250 | return NULL; | |
4251 | m->next = NULL; | |
4252 | m->p_type = PT_DYNAMIC; | |
4253 | m->count = 1; | |
4254 | m->sections[0] = dynsec; | |
08a40648 | 4255 | |
229fcec5 MM |
4256 | return m; |
4257 | } | |
4258 | ||
8ded5a0f | 4259 | /* Possibly add or remove segments from the segment map. */ |
252b5132 | 4260 | |
b34976b6 | 4261 | static bfd_boolean |
3dea8fca AM |
4262 | elf_modify_segment_map (bfd *abfd, |
4263 | struct bfd_link_info *info, | |
4264 | bfd_boolean remove_empty_load) | |
252b5132 | 4265 | { |
252e386e | 4266 | struct elf_segment_map **m; |
8ded5a0f | 4267 | const struct elf_backend_data *bed; |
252b5132 | 4268 | |
8ded5a0f AM |
4269 | /* The placement algorithm assumes that non allocated sections are |
4270 | not in PT_LOAD segments. We ensure this here by removing such | |
4271 | sections from the segment map. We also remove excluded | |
252e386e AM |
4272 | sections. Finally, any PT_LOAD segment without sections is |
4273 | removed. */ | |
12bd6957 | 4274 | m = &elf_seg_map (abfd); |
252e386e | 4275 | while (*m) |
8ded5a0f AM |
4276 | { |
4277 | unsigned int i, new_count; | |
252b5132 | 4278 | |
252e386e | 4279 | for (new_count = 0, i = 0; i < (*m)->count; i++) |
8ded5a0f | 4280 | { |
252e386e AM |
4281 | if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0 |
4282 | && (((*m)->sections[i]->flags & SEC_ALLOC) != 0 | |
4283 | || (*m)->p_type != PT_LOAD)) | |
8ded5a0f | 4284 | { |
252e386e AM |
4285 | (*m)->sections[new_count] = (*m)->sections[i]; |
4286 | new_count++; | |
8ded5a0f AM |
4287 | } |
4288 | } | |
252e386e | 4289 | (*m)->count = new_count; |
252b5132 | 4290 | |
3dea8fca | 4291 | if (remove_empty_load && (*m)->p_type == PT_LOAD && (*m)->count == 0) |
252e386e AM |
4292 | *m = (*m)->next; |
4293 | else | |
4294 | m = &(*m)->next; | |
8ded5a0f | 4295 | } |
252b5132 | 4296 | |
8ded5a0f AM |
4297 | bed = get_elf_backend_data (abfd); |
4298 | if (bed->elf_backend_modify_segment_map != NULL) | |
252b5132 | 4299 | { |
252e386e | 4300 | if (!(*bed->elf_backend_modify_segment_map) (abfd, info)) |
8ded5a0f | 4301 | return FALSE; |
252b5132 | 4302 | } |
252b5132 | 4303 | |
8ded5a0f AM |
4304 | return TRUE; |
4305 | } | |
252b5132 | 4306 | |
8ded5a0f | 4307 | /* Set up a mapping from BFD sections to program segments. */ |
252b5132 | 4308 | |
8ded5a0f AM |
4309 | bfd_boolean |
4310 | _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) | |
4311 | { | |
4312 | unsigned int count; | |
4313 | struct elf_segment_map *m; | |
4314 | asection **sections = NULL; | |
4315 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3dea8fca | 4316 | bfd_boolean no_user_phdrs; |
252b5132 | 4317 | |
12bd6957 | 4318 | no_user_phdrs = elf_seg_map (abfd) == NULL; |
d324f6d6 RM |
4319 | |
4320 | if (info != NULL) | |
4321 | info->user_phdrs = !no_user_phdrs; | |
4322 | ||
3dea8fca | 4323 | if (no_user_phdrs && bfd_count_sections (abfd) != 0) |
252b5132 | 4324 | { |
8ded5a0f AM |
4325 | asection *s; |
4326 | unsigned int i; | |
4327 | struct elf_segment_map *mfirst; | |
4328 | struct elf_segment_map **pm; | |
4329 | asection *last_hdr; | |
4330 | bfd_vma last_size; | |
4331 | unsigned int phdr_index; | |
4332 | bfd_vma maxpagesize; | |
4333 | asection **hdrpp; | |
4334 | bfd_boolean phdr_in_segment = TRUE; | |
4335 | bfd_boolean writable; | |
4336 | int tls_count = 0; | |
4337 | asection *first_tls = NULL; | |
4338 | asection *dynsec, *eh_frame_hdr; | |
4339 | bfd_size_type amt; | |
8d06853e | 4340 | bfd_vma addr_mask, wrap_to = 0; |
252b5132 | 4341 | |
8ded5a0f | 4342 | /* Select the allocated sections, and sort them. */ |
252b5132 | 4343 | |
a50b1753 NC |
4344 | sections = (asection **) bfd_malloc2 (bfd_count_sections (abfd), |
4345 | sizeof (asection *)); | |
8ded5a0f | 4346 | if (sections == NULL) |
252b5132 | 4347 | goto error_return; |
252b5132 | 4348 | |
8d06853e AM |
4349 | /* Calculate top address, avoiding undefined behaviour of shift |
4350 | left operator when shift count is equal to size of type | |
4351 | being shifted. */ | |
4352 | addr_mask = ((bfd_vma) 1 << (bfd_arch_bits_per_address (abfd) - 1)) - 1; | |
4353 | addr_mask = (addr_mask << 1) + 1; | |
4354 | ||
8ded5a0f AM |
4355 | i = 0; |
4356 | for (s = abfd->sections; s != NULL; s = s->next) | |
4357 | { | |
4358 | if ((s->flags & SEC_ALLOC) != 0) | |
4359 | { | |
4360 | sections[i] = s; | |
4361 | ++i; | |
8d06853e AM |
4362 | /* A wrapping section potentially clashes with header. */ |
4363 | if (((s->lma + s->size) & addr_mask) < (s->lma & addr_mask)) | |
4364 | wrap_to = (s->lma + s->size) & addr_mask; | |
8ded5a0f AM |
4365 | } |
4366 | } | |
4367 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
4368 | count = i; | |
252b5132 | 4369 | |
8ded5a0f | 4370 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); |
252b5132 | 4371 | |
8ded5a0f | 4372 | /* Build the mapping. */ |
252b5132 | 4373 | |
8ded5a0f AM |
4374 | mfirst = NULL; |
4375 | pm = &mfirst; | |
252b5132 | 4376 | |
8ded5a0f AM |
4377 | /* If we have a .interp section, then create a PT_PHDR segment for |
4378 | the program headers and a PT_INTERP segment for the .interp | |
4379 | section. */ | |
4380 | s = bfd_get_section_by_name (abfd, ".interp"); | |
4381 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
4382 | { | |
4383 | amt = sizeof (struct elf_segment_map); | |
a50b1753 | 4384 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
4385 | if (m == NULL) |
4386 | goto error_return; | |
4387 | m->next = NULL; | |
4388 | m->p_type = PT_PHDR; | |
4389 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
4390 | m->p_flags = PF_R | PF_X; | |
4391 | m->p_flags_valid = 1; | |
4392 | m->includes_phdrs = 1; | |
252b5132 | 4393 | |
8ded5a0f AM |
4394 | *pm = m; |
4395 | pm = &m->next; | |
252b5132 | 4396 | |
8ded5a0f | 4397 | amt = sizeof (struct elf_segment_map); |
a50b1753 | 4398 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
4399 | if (m == NULL) |
4400 | goto error_return; | |
4401 | m->next = NULL; | |
4402 | m->p_type = PT_INTERP; | |
4403 | m->count = 1; | |
4404 | m->sections[0] = s; | |
4405 | ||
4406 | *pm = m; | |
4407 | pm = &m->next; | |
252b5132 | 4408 | } |
8ded5a0f AM |
4409 | |
4410 | /* Look through the sections. We put sections in the same program | |
4411 | segment when the start of the second section can be placed within | |
4412 | a few bytes of the end of the first section. */ | |
4413 | last_hdr = NULL; | |
4414 | last_size = 0; | |
4415 | phdr_index = 0; | |
4416 | maxpagesize = bed->maxpagesize; | |
063bb025 NC |
4417 | /* PR 17512: file: c8455299. |
4418 | Avoid divide-by-zero errors later on. | |
4419 | FIXME: Should we abort if the maxpagesize is zero ? */ | |
4420 | if (maxpagesize == 0) | |
4421 | maxpagesize = 1; | |
8ded5a0f AM |
4422 | writable = FALSE; |
4423 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
4424 | if (dynsec != NULL | |
4425 | && (dynsec->flags & SEC_LOAD) == 0) | |
4426 | dynsec = NULL; | |
4427 | ||
4428 | /* Deal with -Ttext or something similar such that the first section | |
4429 | is not adjacent to the program headers. This is an | |
4430 | approximation, since at this point we don't know exactly how many | |
4431 | program headers we will need. */ | |
4432 | if (count > 0) | |
252b5132 | 4433 | { |
12bd6957 | 4434 | bfd_size_type phdr_size = elf_program_header_size (abfd); |
8ded5a0f | 4435 | |
62d7a5f6 | 4436 | if (phdr_size == (bfd_size_type) -1) |
8ded5a0f | 4437 | phdr_size = get_program_header_size (abfd, info); |
d2bcb0d1 | 4438 | phdr_size += bed->s->sizeof_ehdr; |
8ded5a0f | 4439 | if ((abfd->flags & D_PAGED) == 0 |
8d06853e AM |
4440 | || (sections[0]->lma & addr_mask) < phdr_size |
4441 | || ((sections[0]->lma & addr_mask) % maxpagesize | |
4442 | < phdr_size % maxpagesize) | |
4443 | || (sections[0]->lma & addr_mask & -maxpagesize) < wrap_to) | |
8ded5a0f | 4444 | phdr_in_segment = FALSE; |
252b5132 RH |
4445 | } |
4446 | ||
8ded5a0f | 4447 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) |
252b5132 | 4448 | { |
8ded5a0f AM |
4449 | asection *hdr; |
4450 | bfd_boolean new_segment; | |
4451 | ||
4452 | hdr = *hdrpp; | |
4453 | ||
4454 | /* See if this section and the last one will fit in the same | |
4455 | segment. */ | |
4456 | ||
4457 | if (last_hdr == NULL) | |
4458 | { | |
4459 | /* If we don't have a segment yet, then we don't need a new | |
4460 | one (we build the last one after this loop). */ | |
4461 | new_segment = FALSE; | |
4462 | } | |
4463 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
4464 | { | |
4465 | /* If this section has a different relation between the | |
4466 | virtual address and the load address, then we need a new | |
4467 | segment. */ | |
4468 | new_segment = TRUE; | |
4469 | } | |
b5599592 AM |
4470 | else if (hdr->lma < last_hdr->lma + last_size |
4471 | || last_hdr->lma + last_size < last_hdr->lma) | |
4472 | { | |
4473 | /* If this section has a load address that makes it overlap | |
4474 | the previous section, then we need a new segment. */ | |
4475 | new_segment = TRUE; | |
4476 | } | |
39948a60 NC |
4477 | /* In the next test we have to be careful when last_hdr->lma is close |
4478 | to the end of the address space. If the aligned address wraps | |
4479 | around to the start of the address space, then there are no more | |
4480 | pages left in memory and it is OK to assume that the current | |
4481 | section can be included in the current segment. */ | |
4482 | else if ((BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) + maxpagesize | |
4483 | > last_hdr->lma) | |
4484 | && (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) + maxpagesize | |
4ff73856 | 4485 | <= hdr->lma)) |
8ded5a0f AM |
4486 | { |
4487 | /* If putting this section in this segment would force us to | |
4488 | skip a page in the segment, then we need a new segment. */ | |
4489 | new_segment = TRUE; | |
4490 | } | |
4491 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 | |
e5654c0f AM |
4492 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0 |
4493 | && ((abfd->flags & D_PAGED) == 0 | |
4494 | || (((last_hdr->lma + last_size - 1) & -maxpagesize) | |
4495 | != (hdr->lma & -maxpagesize)))) | |
8ded5a0f | 4496 | { |
e5654c0f AM |
4497 | /* We don't want to put a loaded section after a |
4498 | nonloaded (ie. bss style) section in the same segment | |
4499 | as that will force the non-loaded section to be loaded. | |
4500 | Consider .tbss sections as loaded for this purpose. | |
4501 | However, like the writable/non-writable case below, | |
4502 | if they are on the same page then they must be put | |
4503 | in the same segment. */ | |
8ded5a0f AM |
4504 | new_segment = TRUE; |
4505 | } | |
4506 | else if ((abfd->flags & D_PAGED) == 0) | |
4507 | { | |
4508 | /* If the file is not demand paged, which means that we | |
4509 | don't require the sections to be correctly aligned in the | |
4510 | file, then there is no other reason for a new segment. */ | |
4511 | new_segment = FALSE; | |
4512 | } | |
4513 | else if (! writable | |
4514 | && (hdr->flags & SEC_READONLY) == 0 | |
8d06853e AM |
4515 | && (((last_hdr->lma + last_size - 1) & -maxpagesize) |
4516 | != (hdr->lma & -maxpagesize))) | |
8ded5a0f AM |
4517 | { |
4518 | /* We don't want to put a writable section in a read only | |
4519 | segment, unless they are on the same page in memory | |
4520 | anyhow. We already know that the last section does not | |
4521 | bring us past the current section on the page, so the | |
4522 | only case in which the new section is not on the same | |
4523 | page as the previous section is when the previous section | |
4524 | ends precisely on a page boundary. */ | |
4525 | new_segment = TRUE; | |
4526 | } | |
4527 | else | |
4528 | { | |
4529 | /* Otherwise, we can use the same segment. */ | |
4530 | new_segment = FALSE; | |
4531 | } | |
4532 | ||
2889e75b | 4533 | /* Allow interested parties a chance to override our decision. */ |
ceae84aa AM |
4534 | if (last_hdr != NULL |
4535 | && info != NULL | |
4536 | && info->callbacks->override_segment_assignment != NULL) | |
4537 | new_segment | |
4538 | = info->callbacks->override_segment_assignment (info, abfd, hdr, | |
4539 | last_hdr, | |
4540 | new_segment); | |
2889e75b | 4541 | |
8ded5a0f AM |
4542 | if (! new_segment) |
4543 | { | |
4544 | if ((hdr->flags & SEC_READONLY) == 0) | |
4545 | writable = TRUE; | |
4546 | last_hdr = hdr; | |
4547 | /* .tbss sections effectively have zero size. */ | |
4548 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) | |
4549 | != SEC_THREAD_LOCAL) | |
4550 | last_size = hdr->size; | |
4551 | else | |
4552 | last_size = 0; | |
4553 | continue; | |
4554 | } | |
4555 | ||
4556 | /* We need a new program segment. We must create a new program | |
4557 | header holding all the sections from phdr_index until hdr. */ | |
4558 | ||
4559 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
4560 | if (m == NULL) | |
4561 | goto error_return; | |
4562 | ||
4563 | *pm = m; | |
4564 | pm = &m->next; | |
4565 | ||
252b5132 | 4566 | if ((hdr->flags & SEC_READONLY) == 0) |
b34976b6 | 4567 | writable = TRUE; |
8ded5a0f AM |
4568 | else |
4569 | writable = FALSE; | |
4570 | ||
baaff79e JJ |
4571 | last_hdr = hdr; |
4572 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 4573 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 4574 | last_size = hdr->size; |
baaff79e JJ |
4575 | else |
4576 | last_size = 0; | |
8ded5a0f AM |
4577 | phdr_index = i; |
4578 | phdr_in_segment = FALSE; | |
252b5132 RH |
4579 | } |
4580 | ||
86b2281f AM |
4581 | /* Create a final PT_LOAD program segment, but not if it's just |
4582 | for .tbss. */ | |
4583 | if (last_hdr != NULL | |
4584 | && (i - phdr_index != 1 | |
4585 | || ((last_hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) | |
4586 | != SEC_THREAD_LOCAL))) | |
8ded5a0f AM |
4587 | { |
4588 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
4589 | if (m == NULL) | |
4590 | goto error_return; | |
252b5132 | 4591 | |
8ded5a0f AM |
4592 | *pm = m; |
4593 | pm = &m->next; | |
4594 | } | |
252b5132 | 4595 | |
8ded5a0f AM |
4596 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ |
4597 | if (dynsec != NULL) | |
4598 | { | |
4599 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
4600 | if (m == NULL) | |
4601 | goto error_return; | |
4602 | *pm = m; | |
4603 | pm = &m->next; | |
4604 | } | |
252b5132 | 4605 | |
1c5265b5 JJ |
4606 | /* For each batch of consecutive loadable .note sections, |
4607 | add a PT_NOTE segment. We don't use bfd_get_section_by_name, | |
4608 | because if we link together nonloadable .note sections and | |
4609 | loadable .note sections, we will generate two .note sections | |
4610 | in the output file. FIXME: Using names for section types is | |
4611 | bogus anyhow. */ | |
8ded5a0f AM |
4612 | for (s = abfd->sections; s != NULL; s = s->next) |
4613 | { | |
4614 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 4615 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f | 4616 | { |
1c5265b5 | 4617 | asection *s2; |
91d6fa6a NC |
4618 | |
4619 | count = 1; | |
8ded5a0f | 4620 | amt = sizeof (struct elf_segment_map); |
1c5265b5 JJ |
4621 | if (s->alignment_power == 2) |
4622 | for (s2 = s; s2->next != NULL; s2 = s2->next) | |
55b581a6 JJ |
4623 | { |
4624 | if (s2->next->alignment_power == 2 | |
4625 | && (s2->next->flags & SEC_LOAD) != 0 | |
4626 | && CONST_STRNEQ (s2->next->name, ".note") | |
8d06853e AM |
4627 | && align_power (s2->lma + s2->size, 2) |
4628 | == s2->next->lma) | |
55b581a6 JJ |
4629 | count++; |
4630 | else | |
4631 | break; | |
4632 | } | |
1c5265b5 | 4633 | amt += (count - 1) * sizeof (asection *); |
a50b1753 | 4634 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
4635 | if (m == NULL) |
4636 | goto error_return; | |
4637 | m->next = NULL; | |
4638 | m->p_type = PT_NOTE; | |
1c5265b5 JJ |
4639 | m->count = count; |
4640 | while (count > 1) | |
4641 | { | |
4642 | m->sections[m->count - count--] = s; | |
4643 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
4644 | s = s->next; | |
4645 | } | |
4646 | m->sections[m->count - 1] = s; | |
4647 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
8ded5a0f AM |
4648 | *pm = m; |
4649 | pm = &m->next; | |
4650 | } | |
4651 | if (s->flags & SEC_THREAD_LOCAL) | |
4652 | { | |
4653 | if (! tls_count) | |
4654 | first_tls = s; | |
4655 | tls_count++; | |
4656 | } | |
4657 | } | |
252b5132 | 4658 | |
8ded5a0f AM |
4659 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ |
4660 | if (tls_count > 0) | |
4661 | { | |
8ded5a0f AM |
4662 | amt = sizeof (struct elf_segment_map); |
4663 | amt += (tls_count - 1) * sizeof (asection *); | |
a50b1753 | 4664 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
4665 | if (m == NULL) |
4666 | goto error_return; | |
4667 | m->next = NULL; | |
4668 | m->p_type = PT_TLS; | |
4669 | m->count = tls_count; | |
4670 | /* Mandated PF_R. */ | |
4671 | m->p_flags = PF_R; | |
4672 | m->p_flags_valid = 1; | |
d923cae0 | 4673 | s = first_tls; |
91d6fa6a | 4674 | for (i = 0; i < (unsigned int) tls_count; ++i) |
8ded5a0f | 4675 | { |
d923cae0 L |
4676 | if ((s->flags & SEC_THREAD_LOCAL) == 0) |
4677 | { | |
4678 | _bfd_error_handler | |
4679 | (_("%B: TLS sections are not adjacent:"), abfd); | |
4680 | s = first_tls; | |
4681 | i = 0; | |
4682 | while (i < (unsigned int) tls_count) | |
4683 | { | |
4684 | if ((s->flags & SEC_THREAD_LOCAL) != 0) | |
4685 | { | |
4686 | _bfd_error_handler (_(" TLS: %A"), s); | |
4687 | i++; | |
4688 | } | |
4689 | else | |
4690 | _bfd_error_handler (_(" non-TLS: %A"), s); | |
4691 | s = s->next; | |
4692 | } | |
4693 | bfd_set_error (bfd_error_bad_value); | |
4694 | goto error_return; | |
4695 | } | |
4696 | m->sections[i] = s; | |
4697 | s = s->next; | |
8ded5a0f | 4698 | } |
252b5132 | 4699 | |
8ded5a0f AM |
4700 | *pm = m; |
4701 | pm = &m->next; | |
4702 | } | |
252b5132 | 4703 | |
8ded5a0f AM |
4704 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
4705 | segment. */ | |
12bd6957 | 4706 | eh_frame_hdr = elf_eh_frame_hdr (abfd); |
8ded5a0f AM |
4707 | if (eh_frame_hdr != NULL |
4708 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
252b5132 | 4709 | { |
dc810e39 | 4710 | amt = sizeof (struct elf_segment_map); |
a50b1753 | 4711 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
252b5132 RH |
4712 | if (m == NULL) |
4713 | goto error_return; | |
4714 | m->next = NULL; | |
8ded5a0f | 4715 | m->p_type = PT_GNU_EH_FRAME; |
252b5132 | 4716 | m->count = 1; |
8ded5a0f | 4717 | m->sections[0] = eh_frame_hdr->output_section; |
252b5132 RH |
4718 | |
4719 | *pm = m; | |
4720 | pm = &m->next; | |
4721 | } | |
13ae64f3 | 4722 | |
12bd6957 | 4723 | if (elf_stack_flags (abfd)) |
13ae64f3 | 4724 | { |
8ded5a0f | 4725 | amt = sizeof (struct elf_segment_map); |
a50b1753 | 4726 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
4727 | if (m == NULL) |
4728 | goto error_return; | |
4729 | m->next = NULL; | |
2b05f1b7 | 4730 | m->p_type = PT_GNU_STACK; |
12bd6957 | 4731 | m->p_flags = elf_stack_flags (abfd); |
04c3a755 | 4732 | m->p_align = bed->stack_align; |
8ded5a0f | 4733 | m->p_flags_valid = 1; |
04c3a755 NS |
4734 | m->p_align_valid = m->p_align != 0; |
4735 | if (info->stacksize > 0) | |
4736 | { | |
4737 | m->p_size = info->stacksize; | |
4738 | m->p_size_valid = 1; | |
4739 | } | |
252b5132 | 4740 | |
8ded5a0f AM |
4741 | *pm = m; |
4742 | pm = &m->next; | |
4743 | } | |
65765700 | 4744 | |
ceae84aa | 4745 | if (info != NULL && info->relro) |
8ded5a0f | 4746 | { |
f210dcff L |
4747 | for (m = mfirst; m != NULL; m = m->next) |
4748 | { | |
3832a4d8 AM |
4749 | if (m->p_type == PT_LOAD |
4750 | && m->count != 0 | |
4751 | && m->sections[0]->vma >= info->relro_start | |
4752 | && m->sections[0]->vma < info->relro_end) | |
f210dcff | 4753 | { |
3832a4d8 AM |
4754 | i = m->count; |
4755 | while (--i != (unsigned) -1) | |
4756 | if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) | |
4757 | == (SEC_LOAD | SEC_HAS_CONTENTS)) | |
4758 | break; | |
4759 | ||
43a8475c | 4760 | if (i != (unsigned) -1) |
f210dcff L |
4761 | break; |
4762 | } | |
be01b344 | 4763 | } |
f210dcff L |
4764 | |
4765 | /* Make a PT_GNU_RELRO segment only when it isn't empty. */ | |
4766 | if (m != NULL) | |
4767 | { | |
4768 | amt = sizeof (struct elf_segment_map); | |
a50b1753 | 4769 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
f210dcff L |
4770 | if (m == NULL) |
4771 | goto error_return; | |
4772 | m->next = NULL; | |
4773 | m->p_type = PT_GNU_RELRO; | |
f210dcff L |
4774 | *pm = m; |
4775 | pm = &m->next; | |
4776 | } | |
8ded5a0f | 4777 | } |
9ee5e499 | 4778 | |
8ded5a0f | 4779 | free (sections); |
12bd6957 | 4780 | elf_seg_map (abfd) = mfirst; |
9ee5e499 JJ |
4781 | } |
4782 | ||
3dea8fca | 4783 | if (!elf_modify_segment_map (abfd, info, no_user_phdrs)) |
8ded5a0f | 4784 | return FALSE; |
8c37241b | 4785 | |
12bd6957 | 4786 | for (count = 0, m = elf_seg_map (abfd); m != NULL; m = m->next) |
8ded5a0f | 4787 | ++count; |
12bd6957 | 4788 | elf_program_header_size (abfd) = count * bed->s->sizeof_phdr; |
252b5132 | 4789 | |
b34976b6 | 4790 | return TRUE; |
252b5132 RH |
4791 | |
4792 | error_return: | |
4793 | if (sections != NULL) | |
4794 | free (sections); | |
b34976b6 | 4795 | return FALSE; |
252b5132 RH |
4796 | } |
4797 | ||
4798 | /* Sort sections by address. */ | |
4799 | ||
4800 | static int | |
217aa764 | 4801 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
4802 | { |
4803 | const asection *sec1 = *(const asection **) arg1; | |
4804 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 4805 | bfd_size_type size1, size2; |
252b5132 RH |
4806 | |
4807 | /* Sort by LMA first, since this is the address used to | |
4808 | place the section into a segment. */ | |
4809 | if (sec1->lma < sec2->lma) | |
4810 | return -1; | |
4811 | else if (sec1->lma > sec2->lma) | |
4812 | return 1; | |
4813 | ||
4814 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
4815 | the same, and this will do nothing. */ | |
4816 | if (sec1->vma < sec2->vma) | |
4817 | return -1; | |
4818 | else if (sec1->vma > sec2->vma) | |
4819 | return 1; | |
4820 | ||
4821 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
4822 | ||
07c6e936 | 4823 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
4824 | |
4825 | if (TOEND (sec1)) | |
4826 | { | |
4827 | if (TOEND (sec2)) | |
00a7cdc5 NC |
4828 | { |
4829 | /* If the indicies are the same, do not return 0 | |
4830 | here, but continue to try the next comparison. */ | |
4831 | if (sec1->target_index - sec2->target_index != 0) | |
4832 | return sec1->target_index - sec2->target_index; | |
4833 | } | |
252b5132 RH |
4834 | else |
4835 | return 1; | |
4836 | } | |
00a7cdc5 | 4837 | else if (TOEND (sec2)) |
252b5132 RH |
4838 | return -1; |
4839 | ||
4840 | #undef TOEND | |
4841 | ||
00a7cdc5 NC |
4842 | /* Sort by size, to put zero sized sections |
4843 | before others at the same address. */ | |
252b5132 | 4844 | |
eea6121a AM |
4845 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
4846 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
4847 | |
4848 | if (size1 < size2) | |
252b5132 | 4849 | return -1; |
eecdbe52 | 4850 | if (size1 > size2) |
252b5132 RH |
4851 | return 1; |
4852 | ||
4853 | return sec1->target_index - sec2->target_index; | |
4854 | } | |
4855 | ||
340b6d91 AC |
4856 | /* Ian Lance Taylor writes: |
4857 | ||
4858 | We shouldn't be using % with a negative signed number. That's just | |
4859 | not good. We have to make sure either that the number is not | |
4860 | negative, or that the number has an unsigned type. When the types | |
4861 | are all the same size they wind up as unsigned. When file_ptr is a | |
4862 | larger signed type, the arithmetic winds up as signed long long, | |
4863 | which is wrong. | |
4864 | ||
4865 | What we're trying to say here is something like ``increase OFF by | |
4866 | the least amount that will cause it to be equal to the VMA modulo | |
4867 | the page size.'' */ | |
4868 | /* In other words, something like: | |
4869 | ||
4870 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
4871 | off_offset = off % bed->maxpagesize; | |
4872 | if (vma_offset < off_offset) | |
4873 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4874 | else | |
4875 | adjustment = vma_offset - off_offset; | |
08a40648 | 4876 | |
340b6d91 AC |
4877 | which can can be collapsed into the expression below. */ |
4878 | ||
4879 | static file_ptr | |
4880 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4881 | { | |
dc9155b2 NC |
4882 | /* PR binutils/16199: Handle an alignment of zero. */ |
4883 | if (maxpagesize == 0) | |
4884 | maxpagesize = 1; | |
340b6d91 AC |
4885 | return ((vma - off) % maxpagesize); |
4886 | } | |
4887 | ||
6d33f217 L |
4888 | static void |
4889 | print_segment_map (const struct elf_segment_map *m) | |
4890 | { | |
4891 | unsigned int j; | |
4892 | const char *pt = get_segment_type (m->p_type); | |
4893 | char buf[32]; | |
4894 | ||
4895 | if (pt == NULL) | |
4896 | { | |
4897 | if (m->p_type >= PT_LOPROC && m->p_type <= PT_HIPROC) | |
4898 | sprintf (buf, "LOPROC+%7.7x", | |
4899 | (unsigned int) (m->p_type - PT_LOPROC)); | |
4900 | else if (m->p_type >= PT_LOOS && m->p_type <= PT_HIOS) | |
4901 | sprintf (buf, "LOOS+%7.7x", | |
4902 | (unsigned int) (m->p_type - PT_LOOS)); | |
4903 | else | |
4904 | snprintf (buf, sizeof (buf), "%8.8x", | |
4905 | (unsigned int) m->p_type); | |
4906 | pt = buf; | |
4907 | } | |
4a97a0e5 | 4908 | fflush (stdout); |
6d33f217 L |
4909 | fprintf (stderr, "%s:", pt); |
4910 | for (j = 0; j < m->count; j++) | |
4911 | fprintf (stderr, " %s", m->sections [j]->name); | |
4912 | putc ('\n',stderr); | |
4a97a0e5 | 4913 | fflush (stderr); |
6d33f217 L |
4914 | } |
4915 | ||
32812159 AM |
4916 | static bfd_boolean |
4917 | write_zeros (bfd *abfd, file_ptr pos, bfd_size_type len) | |
4918 | { | |
4919 | void *buf; | |
4920 | bfd_boolean ret; | |
4921 | ||
4922 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
4923 | return FALSE; | |
4924 | buf = bfd_zmalloc (len); | |
4925 | if (buf == NULL) | |
4926 | return FALSE; | |
4927 | ret = bfd_bwrite (buf, len, abfd) == len; | |
4928 | free (buf); | |
4929 | return ret; | |
4930 | } | |
4931 | ||
252b5132 RH |
4932 | /* Assign file positions to the sections based on the mapping from |
4933 | sections to segments. This function also sets up some fields in | |
f3520d2f | 4934 | the file header. */ |
252b5132 | 4935 | |
b34976b6 | 4936 | static bfd_boolean |
f3520d2f AM |
4937 | assign_file_positions_for_load_sections (bfd *abfd, |
4938 | struct bfd_link_info *link_info) | |
252b5132 RH |
4939 | { |
4940 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 4941 | struct elf_segment_map *m; |
252b5132 | 4942 | Elf_Internal_Phdr *phdrs; |
252b5132 | 4943 | Elf_Internal_Phdr *p; |
02bf8d82 | 4944 | file_ptr off; |
3f570048 | 4945 | bfd_size_type maxpagesize; |
f3520d2f | 4946 | unsigned int alloc; |
0920dee7 | 4947 | unsigned int i, j; |
2b0bc088 | 4948 | bfd_vma header_pad = 0; |
252b5132 | 4949 | |
e36284ab | 4950 | if (link_info == NULL |
ceae84aa | 4951 | && !_bfd_elf_map_sections_to_segments (abfd, link_info)) |
8ded5a0f | 4952 | return FALSE; |
252b5132 | 4953 | |
8ded5a0f | 4954 | alloc = 0; |
12bd6957 | 4955 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
2b0bc088 NC |
4956 | { |
4957 | ++alloc; | |
4958 | if (m->header_size) | |
4959 | header_pad = m->header_size; | |
4960 | } | |
252b5132 | 4961 | |
82f2dbf7 NC |
4962 | if (alloc) |
4963 | { | |
4964 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4965 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
4966 | } | |
4967 | else | |
4968 | { | |
4969 | /* PR binutils/12467. */ | |
4970 | elf_elfheader (abfd)->e_phoff = 0; | |
4971 | elf_elfheader (abfd)->e_phentsize = 0; | |
4972 | } | |
d324f6d6 | 4973 | |
8ded5a0f | 4974 | elf_elfheader (abfd)->e_phnum = alloc; |
252b5132 | 4975 | |
12bd6957 AM |
4976 | if (elf_program_header_size (abfd) == (bfd_size_type) -1) |
4977 | elf_program_header_size (abfd) = alloc * bed->s->sizeof_phdr; | |
8ded5a0f | 4978 | else |
12bd6957 | 4979 | BFD_ASSERT (elf_program_header_size (abfd) |
59e0647f | 4980 | >= alloc * bed->s->sizeof_phdr); |
252b5132 RH |
4981 | |
4982 | if (alloc == 0) | |
f3520d2f | 4983 | { |
12bd6957 | 4984 | elf_next_file_pos (abfd) = bed->s->sizeof_ehdr; |
8ded5a0f | 4985 | return TRUE; |
f3520d2f | 4986 | } |
252b5132 | 4987 | |
12bd6957 | 4988 | /* We're writing the size in elf_program_header_size (abfd), |
57268894 HPN |
4989 | see assign_file_positions_except_relocs, so make sure we have |
4990 | that amount allocated, with trailing space cleared. | |
12bd6957 AM |
4991 | The variable alloc contains the computed need, while |
4992 | elf_program_header_size (abfd) contains the size used for the | |
57268894 HPN |
4993 | layout. |
4994 | See ld/emultempl/elf-generic.em:gld${EMULATION_NAME}_map_segments | |
4995 | where the layout is forced to according to a larger size in the | |
4996 | last iterations for the testcase ld-elf/header. */ | |
12bd6957 | 4997 | BFD_ASSERT (elf_program_header_size (abfd) % bed->s->sizeof_phdr |
57268894 | 4998 | == 0); |
a50b1753 NC |
4999 | phdrs = (Elf_Internal_Phdr *) |
5000 | bfd_zalloc2 (abfd, | |
12bd6957 | 5001 | (elf_program_header_size (abfd) / bed->s->sizeof_phdr), |
a50b1753 | 5002 | sizeof (Elf_Internal_Phdr)); |
f3520d2f | 5003 | elf_tdata (abfd)->phdr = phdrs; |
252b5132 | 5004 | if (phdrs == NULL) |
b34976b6 | 5005 | return FALSE; |
252b5132 | 5006 | |
3f570048 AM |
5007 | maxpagesize = 1; |
5008 | if ((abfd->flags & D_PAGED) != 0) | |
5009 | maxpagesize = bed->maxpagesize; | |
5010 | ||
252b5132 RH |
5011 | off = bed->s->sizeof_ehdr; |
5012 | off += alloc * bed->s->sizeof_phdr; | |
2b0bc088 NC |
5013 | if (header_pad < (bfd_vma) off) |
5014 | header_pad = 0; | |
5015 | else | |
5016 | header_pad -= off; | |
5017 | off += header_pad; | |
252b5132 | 5018 | |
12bd6957 | 5019 | for (m = elf_seg_map (abfd), p = phdrs, j = 0; |
252b5132 | 5020 | m != NULL; |
0920dee7 | 5021 | m = m->next, p++, j++) |
252b5132 | 5022 | { |
252b5132 | 5023 | asection **secpp; |
bf988460 AM |
5024 | bfd_vma off_adjust; |
5025 | bfd_boolean no_contents; | |
252b5132 RH |
5026 | |
5027 | /* If elf_segment_map is not from map_sections_to_segments, the | |
08a40648 | 5028 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
5029 | not be done to the PT_NOTE section of a corefile, which may |
5030 | contain several pseudo-sections artificially created by bfd. | |
5031 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
5032 | if (m->count > 1 |
5033 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 5034 | && m->p_type == PT_NOTE)) |
252b5132 RH |
5035 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
5036 | elf_sort_sections); | |
5037 | ||
b301b248 AM |
5038 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
5039 | number of sections with contents contributing to both p_filesz | |
5040 | and p_memsz, followed by a number of sections with no contents | |
5041 | that just contribute to p_memsz. In this loop, OFF tracks next | |
02bf8d82 | 5042 | available file offset for PT_LOAD and PT_NOTE segments. */ |
252b5132 | 5043 | p->p_type = m->p_type; |
28a7f3e7 | 5044 | p->p_flags = m->p_flags; |
252b5132 | 5045 | |
3f570048 AM |
5046 | if (m->count == 0) |
5047 | p->p_vaddr = 0; | |
5048 | else | |
3271a814 | 5049 | p->p_vaddr = m->sections[0]->vma - m->p_vaddr_offset; |
3f570048 AM |
5050 | |
5051 | if (m->p_paddr_valid) | |
5052 | p->p_paddr = m->p_paddr; | |
5053 | else if (m->count == 0) | |
5054 | p->p_paddr = 0; | |
5055 | else | |
08a40648 | 5056 | p->p_paddr = m->sections[0]->lma - m->p_vaddr_offset; |
3f570048 AM |
5057 | |
5058 | if (p->p_type == PT_LOAD | |
5059 | && (abfd->flags & D_PAGED) != 0) | |
5060 | { | |
5061 | /* p_align in demand paged PT_LOAD segments effectively stores | |
5062 | the maximum page size. When copying an executable with | |
5063 | objcopy, we set m->p_align from the input file. Use this | |
5064 | value for maxpagesize rather than bed->maxpagesize, which | |
5065 | may be different. Note that we use maxpagesize for PT_TLS | |
5066 | segment alignment later in this function, so we are relying | |
5067 | on at least one PT_LOAD segment appearing before a PT_TLS | |
5068 | segment. */ | |
5069 | if (m->p_align_valid) | |
5070 | maxpagesize = m->p_align; | |
5071 | ||
5072 | p->p_align = maxpagesize; | |
5073 | } | |
3271a814 NS |
5074 | else if (m->p_align_valid) |
5075 | p->p_align = m->p_align; | |
e970b90a DJ |
5076 | else if (m->count == 0) |
5077 | p->p_align = 1 << bed->s->log_file_align; | |
3f570048 AM |
5078 | else |
5079 | p->p_align = 0; | |
5080 | ||
bf988460 AM |
5081 | no_contents = FALSE; |
5082 | off_adjust = 0; | |
252b5132 | 5083 | if (p->p_type == PT_LOAD |
b301b248 | 5084 | && m->count > 0) |
252b5132 | 5085 | { |
b301b248 | 5086 | bfd_size_type align; |
a49e53ed | 5087 | unsigned int align_power = 0; |
b301b248 | 5088 | |
3271a814 NS |
5089 | if (m->p_align_valid) |
5090 | align = p->p_align; | |
5091 | else | |
252b5132 | 5092 | { |
3271a814 NS |
5093 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
5094 | { | |
5095 | unsigned int secalign; | |
08a40648 | 5096 | |
3271a814 NS |
5097 | secalign = bfd_get_section_alignment (abfd, *secpp); |
5098 | if (secalign > align_power) | |
5099 | align_power = secalign; | |
5100 | } | |
5101 | align = (bfd_size_type) 1 << align_power; | |
5102 | if (align < maxpagesize) | |
5103 | align = maxpagesize; | |
b301b248 | 5104 | } |
252b5132 | 5105 | |
02bf8d82 AM |
5106 | for (i = 0; i < m->count; i++) |
5107 | if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
5108 | /* If we aren't making room for this section, then | |
5109 | it must be SHT_NOBITS regardless of what we've | |
5110 | set via struct bfd_elf_special_section. */ | |
5111 | elf_section_type (m->sections[i]) = SHT_NOBITS; | |
5112 | ||
bf988460 | 5113 | /* Find out whether this segment contains any loadable |
aea274d3 AM |
5114 | sections. */ |
5115 | no_contents = TRUE; | |
5116 | for (i = 0; i < m->count; i++) | |
5117 | if (elf_section_type (m->sections[i]) != SHT_NOBITS) | |
5118 | { | |
5119 | no_contents = FALSE; | |
5120 | break; | |
5121 | } | |
bf988460 | 5122 | |
85cfcbfb | 5123 | off_adjust = vma_page_aligned_bias (p->p_vaddr, off, align); |
bf988460 AM |
5124 | off += off_adjust; |
5125 | if (no_contents) | |
5126 | { | |
5127 | /* We shouldn't need to align the segment on disk since | |
5128 | the segment doesn't need file space, but the gABI | |
5129 | arguably requires the alignment and glibc ld.so | |
5130 | checks it. So to comply with the alignment | |
5131 | requirement but not waste file space, we adjust | |
5132 | p_offset for just this segment. (OFF_ADJUST is | |
5133 | subtracted from OFF later.) This may put p_offset | |
5134 | past the end of file, but that shouldn't matter. */ | |
5135 | } | |
5136 | else | |
5137 | off_adjust = 0; | |
252b5132 | 5138 | } |
b1a6d0b1 NC |
5139 | /* Make sure the .dynamic section is the first section in the |
5140 | PT_DYNAMIC segment. */ | |
5141 | else if (p->p_type == PT_DYNAMIC | |
5142 | && m->count > 1 | |
5143 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
5144 | { | |
5145 | _bfd_error_handler | |
b301b248 AM |
5146 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
5147 | abfd); | |
b1a6d0b1 NC |
5148 | bfd_set_error (bfd_error_bad_value); |
5149 | return FALSE; | |
5150 | } | |
3f001e84 JK |
5151 | /* Set the note section type to SHT_NOTE. */ |
5152 | else if (p->p_type == PT_NOTE) | |
5153 | for (i = 0; i < m->count; i++) | |
5154 | elf_section_type (m->sections[i]) = SHT_NOTE; | |
252b5132 | 5155 | |
252b5132 RH |
5156 | p->p_offset = 0; |
5157 | p->p_filesz = 0; | |
5158 | p->p_memsz = 0; | |
5159 | ||
5160 | if (m->includes_filehdr) | |
5161 | { | |
bf988460 | 5162 | if (!m->p_flags_valid) |
252b5132 | 5163 | p->p_flags |= PF_R; |
252b5132 RH |
5164 | p->p_filesz = bed->s->sizeof_ehdr; |
5165 | p->p_memsz = bed->s->sizeof_ehdr; | |
5166 | if (m->count > 0) | |
5167 | { | |
252b5132 RH |
5168 | if (p->p_vaddr < (bfd_vma) off) |
5169 | { | |
caf47ea6 | 5170 | (*_bfd_error_handler) |
b301b248 AM |
5171 | (_("%B: Not enough room for program headers, try linking with -N"), |
5172 | abfd); | |
252b5132 | 5173 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5174 | return FALSE; |
252b5132 RH |
5175 | } |
5176 | ||
5177 | p->p_vaddr -= off; | |
bf988460 | 5178 | if (!m->p_paddr_valid) |
252b5132 RH |
5179 | p->p_paddr -= off; |
5180 | } | |
252b5132 RH |
5181 | } |
5182 | ||
5183 | if (m->includes_phdrs) | |
5184 | { | |
bf988460 | 5185 | if (!m->p_flags_valid) |
252b5132 RH |
5186 | p->p_flags |= PF_R; |
5187 | ||
f3520d2f | 5188 | if (!m->includes_filehdr) |
252b5132 RH |
5189 | { |
5190 | p->p_offset = bed->s->sizeof_ehdr; | |
5191 | ||
5192 | if (m->count > 0) | |
5193 | { | |
252b5132 | 5194 | p->p_vaddr -= off - p->p_offset; |
bf988460 | 5195 | if (!m->p_paddr_valid) |
252b5132 RH |
5196 | p->p_paddr -= off - p->p_offset; |
5197 | } | |
252b5132 RH |
5198 | } |
5199 | ||
5200 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
5201 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
2b0bc088 NC |
5202 | if (m->count) |
5203 | { | |
5204 | p->p_filesz += header_pad; | |
5205 | p->p_memsz += header_pad; | |
5206 | } | |
252b5132 RH |
5207 | } |
5208 | ||
5209 | if (p->p_type == PT_LOAD | |
5210 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
5211 | { | |
bf988460 | 5212 | if (!m->includes_filehdr && !m->includes_phdrs) |
02bf8d82 | 5213 | p->p_offset = off; |
252b5132 RH |
5214 | else |
5215 | { | |
5216 | file_ptr adjust; | |
5217 | ||
5218 | adjust = off - (p->p_offset + p->p_filesz); | |
bf988460 AM |
5219 | if (!no_contents) |
5220 | p->p_filesz += adjust; | |
252b5132 RH |
5221 | p->p_memsz += adjust; |
5222 | } | |
5223 | } | |
5224 | ||
1ea63fd2 AM |
5225 | /* Set up p_filesz, p_memsz, p_align and p_flags from the section |
5226 | maps. Set filepos for sections in PT_LOAD segments, and in | |
5227 | core files, for sections in PT_NOTE segments. | |
5228 | assign_file_positions_for_non_load_sections will set filepos | |
5229 | for other sections and update p_filesz for other segments. */ | |
252b5132 RH |
5230 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
5231 | { | |
5232 | asection *sec; | |
252b5132 | 5233 | bfd_size_type align; |
627b32bc | 5234 | Elf_Internal_Shdr *this_hdr; |
252b5132 RH |
5235 | |
5236 | sec = *secpp; | |
02bf8d82 | 5237 | this_hdr = &elf_section_data (sec)->this_hdr; |
3f570048 | 5238 | align = (bfd_size_type) 1 << bfd_get_section_alignment (abfd, sec); |
252b5132 | 5239 | |
88967714 AM |
5240 | if ((p->p_type == PT_LOAD |
5241 | || p->p_type == PT_TLS) | |
5242 | && (this_hdr->sh_type != SHT_NOBITS | |
5243 | || ((this_hdr->sh_flags & SHF_ALLOC) != 0 | |
5244 | && ((this_hdr->sh_flags & SHF_TLS) == 0 | |
5245 | || p->p_type == PT_TLS)))) | |
252b5132 | 5246 | { |
b5599592 AM |
5247 | bfd_vma p_start = p->p_paddr; |
5248 | bfd_vma p_end = p_start + p->p_memsz; | |
5249 | bfd_vma s_start = sec->lma; | |
5250 | bfd_vma adjust = s_start - p_end; | |
252b5132 | 5251 | |
a2d1e028 L |
5252 | if (adjust != 0 |
5253 | && (s_start < p_end | |
5254 | || p_end < p_start)) | |
252b5132 | 5255 | { |
88967714 | 5256 | (*_bfd_error_handler) |
b5599592 AM |
5257 | (_("%B: section %A lma %#lx adjusted to %#lx"), abfd, sec, |
5258 | (unsigned long) s_start, (unsigned long) p_end); | |
88967714 | 5259 | adjust = 0; |
b5599592 | 5260 | sec->lma = p_end; |
1cfb7d1e | 5261 | } |
3ac9b6c9 | 5262 | p->p_memsz += adjust; |
1cfb7d1e | 5263 | |
88967714 AM |
5264 | if (this_hdr->sh_type != SHT_NOBITS) |
5265 | { | |
32812159 AM |
5266 | if (p->p_filesz + adjust < p->p_memsz) |
5267 | { | |
5268 | /* We have a PROGBITS section following NOBITS ones. | |
5269 | Allocate file space for the NOBITS section(s) and | |
5270 | zero it. */ | |
5271 | adjust = p->p_memsz - p->p_filesz; | |
5272 | if (!write_zeros (abfd, off, adjust)) | |
5273 | return FALSE; | |
5274 | } | |
88967714 AM |
5275 | off += adjust; |
5276 | p->p_filesz += adjust; | |
252b5132 | 5277 | } |
252b5132 RH |
5278 | } |
5279 | ||
5280 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
5281 | { | |
b301b248 AM |
5282 | /* The section at i == 0 is the one that actually contains |
5283 | everything. */ | |
4a938328 MS |
5284 | if (i == 0) |
5285 | { | |
627b32bc | 5286 | this_hdr->sh_offset = sec->filepos = off; |
6a3cd2b4 AM |
5287 | off += this_hdr->sh_size; |
5288 | p->p_filesz = this_hdr->sh_size; | |
b301b248 AM |
5289 | p->p_memsz = 0; |
5290 | p->p_align = 1; | |
252b5132 | 5291 | } |
4a938328 | 5292 | else |
252b5132 | 5293 | { |
b301b248 | 5294 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 5295 | sec->filepos = 0; |
eea6121a | 5296 | sec->size = 0; |
b301b248 AM |
5297 | sec->flags = 0; |
5298 | continue; | |
252b5132 | 5299 | } |
252b5132 RH |
5300 | } |
5301 | else | |
5302 | { | |
1e951488 | 5303 | if (p->p_type == PT_LOAD) |
b301b248 | 5304 | { |
1e951488 AM |
5305 | this_hdr->sh_offset = sec->filepos = off; |
5306 | if (this_hdr->sh_type != SHT_NOBITS) | |
5307 | off += this_hdr->sh_size; | |
5308 | } | |
5309 | else if (this_hdr->sh_type == SHT_NOBITS | |
5310 | && (this_hdr->sh_flags & SHF_TLS) != 0 | |
5311 | && this_hdr->sh_offset == 0) | |
5312 | { | |
5313 | /* This is a .tbss section that didn't get a PT_LOAD. | |
5314 | (See _bfd_elf_map_sections_to_segments "Create a | |
5315 | final PT_LOAD".) Set sh_offset to the value it | |
5316 | would have if we had created a zero p_filesz and | |
5317 | p_memsz PT_LOAD header for the section. This | |
5318 | also makes the PT_TLS header have the same | |
5319 | p_offset value. */ | |
5320 | bfd_vma adjust = vma_page_aligned_bias (this_hdr->sh_addr, | |
5321 | off, align); | |
5322 | this_hdr->sh_offset = sec->filepos = off + adjust; | |
b301b248 | 5323 | } |
252b5132 | 5324 | |
02bf8d82 | 5325 | if (this_hdr->sh_type != SHT_NOBITS) |
b301b248 | 5326 | { |
6a3cd2b4 | 5327 | p->p_filesz += this_hdr->sh_size; |
02bf8d82 AM |
5328 | /* A load section without SHF_ALLOC is something like |
5329 | a note section in a PT_NOTE segment. These take | |
5330 | file space but are not loaded into memory. */ | |
5331 | if ((this_hdr->sh_flags & SHF_ALLOC) != 0) | |
6a3cd2b4 | 5332 | p->p_memsz += this_hdr->sh_size; |
b301b248 | 5333 | } |
6a3cd2b4 | 5334 | else if ((this_hdr->sh_flags & SHF_ALLOC) != 0) |
13ae64f3 | 5335 | { |
6a3cd2b4 AM |
5336 | if (p->p_type == PT_TLS) |
5337 | p->p_memsz += this_hdr->sh_size; | |
5338 | ||
5339 | /* .tbss is special. It doesn't contribute to p_memsz of | |
5340 | normal segments. */ | |
5341 | else if ((this_hdr->sh_flags & SHF_TLS) == 0) | |
5342 | p->p_memsz += this_hdr->sh_size; | |
13ae64f3 JJ |
5343 | } |
5344 | ||
b10a8ae0 L |
5345 | if (align > p->p_align |
5346 | && !m->p_align_valid | |
5347 | && (p->p_type != PT_LOAD | |
5348 | || (abfd->flags & D_PAGED) == 0)) | |
252b5132 RH |
5349 | p->p_align = align; |
5350 | } | |
5351 | ||
bf988460 | 5352 | if (!m->p_flags_valid) |
252b5132 RH |
5353 | { |
5354 | p->p_flags |= PF_R; | |
02bf8d82 | 5355 | if ((this_hdr->sh_flags & SHF_EXECINSTR) != 0) |
252b5132 | 5356 | p->p_flags |= PF_X; |
02bf8d82 | 5357 | if ((this_hdr->sh_flags & SHF_WRITE) != 0) |
252b5132 RH |
5358 | p->p_flags |= PF_W; |
5359 | } | |
5360 | } | |
43a8475c | 5361 | |
bf988460 | 5362 | off -= off_adjust; |
0920dee7 | 5363 | |
7c928300 AM |
5364 | /* Check that all sections are in a PT_LOAD segment. |
5365 | Don't check funky gdb generated core files. */ | |
5366 | if (p->p_type == PT_LOAD && bfd_get_format (abfd) != bfd_core) | |
9a83a553 AM |
5367 | { |
5368 | bfd_boolean check_vma = TRUE; | |
5369 | ||
5370 | for (i = 1; i < m->count; i++) | |
5371 | if (m->sections[i]->vma == m->sections[i - 1]->vma | |
5372 | && ELF_SECTION_SIZE (&(elf_section_data (m->sections[i]) | |
5373 | ->this_hdr), p) != 0 | |
5374 | && ELF_SECTION_SIZE (&(elf_section_data (m->sections[i - 1]) | |
5375 | ->this_hdr), p) != 0) | |
0920dee7 | 5376 | { |
9a83a553 AM |
5377 | /* Looks like we have overlays packed into the segment. */ |
5378 | check_vma = FALSE; | |
5379 | break; | |
0920dee7 | 5380 | } |
9a83a553 AM |
5381 | |
5382 | for (i = 0; i < m->count; i++) | |
5383 | { | |
5384 | Elf_Internal_Shdr *this_hdr; | |
5385 | asection *sec; | |
5386 | ||
5387 | sec = m->sections[i]; | |
5388 | this_hdr = &(elf_section_data(sec)->this_hdr); | |
86b2281f AM |
5389 | if (!ELF_SECTION_IN_SEGMENT_1 (this_hdr, p, check_vma, 0) |
5390 | && !ELF_TBSS_SPECIAL (this_hdr, p)) | |
9a83a553 AM |
5391 | { |
5392 | (*_bfd_error_handler) | |
5393 | (_("%B: section `%A' can't be allocated in segment %d"), | |
5394 | abfd, sec, j); | |
5395 | print_segment_map (m); | |
5396 | } | |
5397 | } | |
5398 | } | |
252b5132 RH |
5399 | } |
5400 | ||
12bd6957 | 5401 | elf_next_file_pos (abfd) = off; |
f3520d2f AM |
5402 | return TRUE; |
5403 | } | |
5404 | ||
5405 | /* Assign file positions for the other sections. */ | |
5406 | ||
5407 | static bfd_boolean | |
5408 | assign_file_positions_for_non_load_sections (bfd *abfd, | |
5409 | struct bfd_link_info *link_info) | |
5410 | { | |
5411 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
5412 | Elf_Internal_Shdr **i_shdrpp; | |
e06efbf1 | 5413 | Elf_Internal_Shdr **hdrpp, **end_hdrpp; |
f3520d2f AM |
5414 | Elf_Internal_Phdr *phdrs; |
5415 | Elf_Internal_Phdr *p; | |
5416 | struct elf_segment_map *m; | |
62655c7b | 5417 | struct elf_segment_map *hdrs_segment; |
f3520d2f AM |
5418 | bfd_vma filehdr_vaddr, filehdr_paddr; |
5419 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
5420 | file_ptr off; | |
f3520d2f AM |
5421 | unsigned int count; |
5422 | ||
5c182d5f | 5423 | i_shdrpp = elf_elfsections (abfd); |
e06efbf1 | 5424 | end_hdrpp = i_shdrpp + elf_numsections (abfd); |
12bd6957 | 5425 | off = elf_next_file_pos (abfd); |
e06efbf1 | 5426 | for (hdrpp = i_shdrpp + 1; hdrpp < end_hdrpp; hdrpp++) |
5c182d5f | 5427 | { |
5c182d5f AM |
5428 | Elf_Internal_Shdr *hdr; |
5429 | ||
5430 | hdr = *hdrpp; | |
5431 | if (hdr->bfd_section != NULL | |
252e386e AM |
5432 | && (hdr->bfd_section->filepos != 0 |
5433 | || (hdr->sh_type == SHT_NOBITS | |
5434 | && hdr->contents == NULL))) | |
627b32bc | 5435 | BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos); |
5c182d5f AM |
5436 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) |
5437 | { | |
e8d2ba53 AM |
5438 | if (hdr->sh_size != 0) |
5439 | (*_bfd_error_handler) | |
5440 | (_("%B: warning: allocated section `%s' not in segment"), | |
5441 | abfd, | |
5442 | (hdr->bfd_section == NULL | |
5443 | ? "*unknown*" | |
5444 | : hdr->bfd_section->name)); | |
3ba71138 L |
5445 | /* We don't need to page align empty sections. */ |
5446 | if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0) | |
5c182d5f AM |
5447 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
5448 | bed->maxpagesize); | |
5449 | else | |
5450 | off += vma_page_aligned_bias (hdr->sh_addr, off, | |
5451 | hdr->sh_addralign); | |
5452 | off = _bfd_elf_assign_file_position_for_section (hdr, off, | |
5453 | FALSE); | |
5454 | } | |
5455 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) | |
5456 | && hdr->bfd_section == NULL) | |
0ce398f1 L |
5457 | || (hdr->bfd_section != NULL |
5458 | && (hdr->bfd_section->flags & SEC_ELF_COMPRESS)) | |
5459 | /* Compress DWARF debug sections. */ | |
12bd6957 | 5460 | || hdr == i_shdrpp[elf_onesymtab (abfd)] |
6a40cf0c NC |
5461 | || (elf_symtab_shndx_list (abfd) != NULL |
5462 | && hdr == i_shdrpp[elf_symtab_shndx_list (abfd)->ndx]) | |
3e19fb8f L |
5463 | || hdr == i_shdrpp[elf_strtab_sec (abfd)] |
5464 | || hdr == i_shdrpp[elf_shstrtab_sec (abfd)]) | |
5c182d5f AM |
5465 | hdr->sh_offset = -1; |
5466 | else | |
5467 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); | |
5c182d5f AM |
5468 | } |
5469 | ||
252b5132 RH |
5470 | /* Now that we have set the section file positions, we can set up |
5471 | the file positions for the non PT_LOAD segments. */ | |
f3520d2f AM |
5472 | count = 0; |
5473 | filehdr_vaddr = 0; | |
5474 | filehdr_paddr = 0; | |
5475 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
5476 | phdrs_paddr = 0; | |
62655c7b | 5477 | hdrs_segment = NULL; |
f3520d2f | 5478 | phdrs = elf_tdata (abfd)->phdr; |
12bd6957 | 5479 | for (m = elf_seg_map (abfd), p = phdrs; m != NULL; m = m->next, p++) |
f3520d2f AM |
5480 | { |
5481 | ++count; | |
5482 | if (p->p_type != PT_LOAD) | |
5483 | continue; | |
5484 | ||
5485 | if (m->includes_filehdr) | |
5486 | { | |
5487 | filehdr_vaddr = p->p_vaddr; | |
5488 | filehdr_paddr = p->p_paddr; | |
5489 | } | |
5490 | if (m->includes_phdrs) | |
5491 | { | |
5492 | phdrs_vaddr = p->p_vaddr; | |
5493 | phdrs_paddr = p->p_paddr; | |
5494 | if (m->includes_filehdr) | |
5495 | { | |
62655c7b | 5496 | hdrs_segment = m; |
f3520d2f AM |
5497 | phdrs_vaddr += bed->s->sizeof_ehdr; |
5498 | phdrs_paddr += bed->s->sizeof_ehdr; | |
5499 | } | |
5500 | } | |
5501 | } | |
5502 | ||
62655c7b RM |
5503 | if (hdrs_segment != NULL && link_info != NULL) |
5504 | { | |
5505 | /* There is a segment that contains both the file headers and the | |
5506 | program headers, so provide a symbol __ehdr_start pointing there. | |
5507 | A program can use this to examine itself robustly. */ | |
5508 | ||
5509 | struct elf_link_hash_entry *hash | |
5510 | = elf_link_hash_lookup (elf_hash_table (link_info), "__ehdr_start", | |
5511 | FALSE, FALSE, TRUE); | |
5512 | /* If the symbol was referenced and not defined, define it. */ | |
5513 | if (hash != NULL | |
5514 | && (hash->root.type == bfd_link_hash_new | |
5515 | || hash->root.type == bfd_link_hash_undefined | |
5516 | || hash->root.type == bfd_link_hash_undefweak | |
5517 | || hash->root.type == bfd_link_hash_common)) | |
5518 | { | |
5519 | asection *s = NULL; | |
5520 | if (hdrs_segment->count != 0) | |
5521 | /* The segment contains sections, so use the first one. */ | |
5522 | s = hdrs_segment->sections[0]; | |
5523 | else | |
5524 | /* Use the first (i.e. lowest-addressed) section in any segment. */ | |
12bd6957 | 5525 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
62655c7b RM |
5526 | if (m->count != 0) |
5527 | { | |
5528 | s = m->sections[0]; | |
5529 | break; | |
5530 | } | |
5531 | ||
5532 | if (s != NULL) | |
5533 | { | |
5534 | hash->root.u.def.value = filehdr_vaddr - s->vma; | |
5535 | hash->root.u.def.section = s; | |
5536 | } | |
5537 | else | |
5538 | { | |
5539 | hash->root.u.def.value = filehdr_vaddr; | |
5540 | hash->root.u.def.section = bfd_abs_section_ptr; | |
5541 | } | |
5542 | ||
5543 | hash->root.type = bfd_link_hash_defined; | |
5544 | hash->def_regular = 1; | |
5545 | hash->non_elf = 0; | |
5546 | } | |
5547 | } | |
5548 | ||
12bd6957 | 5549 | for (m = elf_seg_map (abfd), p = phdrs; m != NULL; m = m->next, p++) |
252b5132 | 5550 | { |
129af99f | 5551 | if (p->p_type == PT_GNU_RELRO) |
252b5132 | 5552 | { |
b84a33b5 | 5553 | const Elf_Internal_Phdr *lp; |
3146fac4 | 5554 | struct elf_segment_map *lm; |
1ea63fd2 | 5555 | |
129af99f | 5556 | if (link_info != NULL) |
8c37241b | 5557 | { |
129af99f AS |
5558 | /* During linking the range of the RELRO segment is passed |
5559 | in link_info. */ | |
12bd6957 | 5560 | for (lm = elf_seg_map (abfd), lp = phdrs; |
3146fac4 AM |
5561 | lm != NULL; |
5562 | lm = lm->next, lp++) | |
8c37241b JJ |
5563 | { |
5564 | if (lp->p_type == PT_LOAD | |
b84a33b5 | 5565 | && lp->p_vaddr < link_info->relro_end |
3146fac4 AM |
5566 | && lm->count != 0 |
5567 | && lm->sections[0]->vma >= link_info->relro_start) | |
8c37241b JJ |
5568 | break; |
5569 | } | |
8981c88a | 5570 | |
3146fac4 | 5571 | BFD_ASSERT (lm != NULL); |
8c37241b | 5572 | } |
129af99f AS |
5573 | else |
5574 | { | |
5575 | /* Otherwise we are copying an executable or shared | |
b84a33b5 | 5576 | library, but we need to use the same linker logic. */ |
129af99f AS |
5577 | for (lp = phdrs; lp < phdrs + count; ++lp) |
5578 | { | |
5579 | if (lp->p_type == PT_LOAD | |
5580 | && lp->p_paddr == p->p_paddr) | |
5581 | break; | |
5582 | } | |
b84a33b5 AM |
5583 | } |
5584 | ||
5585 | if (lp < phdrs + count) | |
5586 | { | |
5587 | p->p_vaddr = lp->p_vaddr; | |
5588 | p->p_paddr = lp->p_paddr; | |
5589 | p->p_offset = lp->p_offset; | |
5590 | if (link_info != NULL) | |
5591 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
5592 | else if (m->p_size_valid) | |
5593 | p->p_filesz = m->p_size; | |
129af99f AS |
5594 | else |
5595 | abort (); | |
b84a33b5 | 5596 | p->p_memsz = p->p_filesz; |
f3944f72 L |
5597 | /* Preserve the alignment and flags if they are valid. The |
5598 | gold linker generates RW/4 for the PT_GNU_RELRO section. | |
5599 | It is better for objcopy/strip to honor these attributes | |
5600 | otherwise gdb will choke when using separate debug files. | |
5601 | */ | |
5602 | if (!m->p_align_valid) | |
5603 | p->p_align = 1; | |
5604 | if (!m->p_flags_valid) | |
341b8ee7 | 5605 | p->p_flags = PF_R; |
129af99f | 5606 | } |
9433b9b1 | 5607 | else |
b84a33b5 AM |
5608 | { |
5609 | memset (p, 0, sizeof *p); | |
5610 | p->p_type = PT_NULL; | |
5611 | } | |
129af99f | 5612 | } |
04c3a755 NS |
5613 | else if (p->p_type == PT_GNU_STACK) |
5614 | { | |
5615 | if (m->p_size_valid) | |
5616 | p->p_memsz = m->p_size; | |
5617 | } | |
129af99f AS |
5618 | else if (m->count != 0) |
5619 | { | |
e06efbf1 | 5620 | unsigned int i; |
129af99f AS |
5621 | if (p->p_type != PT_LOAD |
5622 | && (p->p_type != PT_NOTE | |
5623 | || bfd_get_format (abfd) != bfd_core)) | |
5624 | { | |
c86934ce NC |
5625 | if (m->includes_filehdr || m->includes_phdrs) |
5626 | { | |
b1fa9dd6 | 5627 | /* PR 17512: file: 2195325e. */ |
c86934ce NC |
5628 | (*_bfd_error_handler) |
5629 | (_("%B: warning: non-load segment includes file header and/or program header"), | |
5630 | abfd); | |
5631 | return FALSE; | |
5632 | } | |
129af99f | 5633 | |
86b2281f | 5634 | p->p_filesz = 0; |
129af99f | 5635 | p->p_offset = m->sections[0]->filepos; |
86b2281f AM |
5636 | for (i = m->count; i-- != 0;) |
5637 | { | |
5638 | asection *sect = m->sections[i]; | |
5639 | Elf_Internal_Shdr *hdr = &elf_section_data (sect)->this_hdr; | |
5640 | if (hdr->sh_type != SHT_NOBITS) | |
5641 | { | |
5642 | p->p_filesz = (sect->filepos - m->sections[0]->filepos | |
5643 | + hdr->sh_size); | |
5644 | break; | |
5645 | } | |
5646 | } | |
129af99f AS |
5647 | } |
5648 | } | |
5649 | else if (m->includes_filehdr) | |
5650 | { | |
5651 | p->p_vaddr = filehdr_vaddr; | |
5652 | if (! m->p_paddr_valid) | |
5653 | p->p_paddr = filehdr_paddr; | |
5654 | } | |
5655 | else if (m->includes_phdrs) | |
5656 | { | |
5657 | p->p_vaddr = phdrs_vaddr; | |
5658 | if (! m->p_paddr_valid) | |
5659 | p->p_paddr = phdrs_paddr; | |
252b5132 RH |
5660 | } |
5661 | } | |
5662 | ||
12bd6957 | 5663 | elf_next_file_pos (abfd) = off; |
252b5132 | 5664 | |
b34976b6 | 5665 | return TRUE; |
252b5132 RH |
5666 | } |
5667 | ||
6a40cf0c NC |
5668 | static elf_section_list * |
5669 | find_section_in_list (unsigned int i, elf_section_list * list) | |
5670 | { | |
5671 | for (;list != NULL; list = list->next) | |
5672 | if (list->ndx == i) | |
5673 | break; | |
5674 | return list; | |
5675 | } | |
5676 | ||
252b5132 RH |
5677 | /* Work out the file positions of all the sections. This is called by |
5678 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
5679 | VMAs must be known before this is called. | |
5680 | ||
e0638f70 AM |
5681 | Reloc sections come in two flavours: Those processed specially as |
5682 | "side-channel" data attached to a section to which they apply, and | |
5683 | those that bfd doesn't process as relocations. The latter sort are | |
5684 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
5685 | consider the former sort here, unless they form part of the loadable | |
5686 | image. Reloc sections not assigned here will be handled later by | |
5687 | assign_file_positions_for_relocs. | |
252b5132 RH |
5688 | |
5689 | We also don't set the positions of the .symtab and .strtab here. */ | |
5690 | ||
b34976b6 | 5691 | static bfd_boolean |
c84fca4d AO |
5692 | assign_file_positions_except_relocs (bfd *abfd, |
5693 | struct bfd_link_info *link_info) | |
252b5132 | 5694 | { |
5c182d5f AM |
5695 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
5696 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
9c5bfbb7 | 5697 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
5698 | |
5699 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
5700 | && bfd_get_format (abfd) != bfd_core) | |
5701 | { | |
5c182d5f AM |
5702 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); |
5703 | unsigned int num_sec = elf_numsections (abfd); | |
252b5132 RH |
5704 | Elf_Internal_Shdr **hdrpp; |
5705 | unsigned int i; | |
a485e98e | 5706 | file_ptr off; |
252b5132 RH |
5707 | |
5708 | /* Start after the ELF header. */ | |
5709 | off = i_ehdrp->e_ehsize; | |
5710 | ||
5711 | /* We are not creating an executable, which means that we are | |
5712 | not creating a program header, and that the actual order of | |
5713 | the sections in the file is unimportant. */ | |
9ad5cbcf | 5714 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
5715 | { |
5716 | Elf_Internal_Shdr *hdr; | |
5717 | ||
5718 | hdr = *hdrpp; | |
e0638f70 AM |
5719 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
5720 | && hdr->bfd_section == NULL) | |
0ce398f1 L |
5721 | || (hdr->bfd_section != NULL |
5722 | && (hdr->bfd_section->flags & SEC_ELF_COMPRESS)) | |
5723 | /* Compress DWARF debug sections. */ | |
12bd6957 | 5724 | || i == elf_onesymtab (abfd) |
6a40cf0c NC |
5725 | || (elf_symtab_shndx_list (abfd) != NULL |
5726 | && hdr == i_shdrpp[elf_symtab_shndx_list (abfd)->ndx]) | |
3e19fb8f L |
5727 | || i == elf_strtab_sec (abfd) |
5728 | || i == elf_shstrtab_sec (abfd)) | |
252b5132 RH |
5729 | { |
5730 | hdr->sh_offset = -1; | |
252b5132 | 5731 | } |
9ad5cbcf | 5732 | else |
b34976b6 | 5733 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 5734 | } |
a485e98e AM |
5735 | |
5736 | elf_next_file_pos (abfd) = off; | |
252b5132 RH |
5737 | } |
5738 | else | |
5739 | { | |
f3520d2f AM |
5740 | unsigned int alloc; |
5741 | ||
252b5132 | 5742 | /* Assign file positions for the loaded sections based on the |
08a40648 | 5743 | assignment of sections to segments. */ |
f3520d2f AM |
5744 | if (!assign_file_positions_for_load_sections (abfd, link_info)) |
5745 | return FALSE; | |
5746 | ||
5747 | /* And for non-load sections. */ | |
5748 | if (!assign_file_positions_for_non_load_sections (abfd, link_info)) | |
5749 | return FALSE; | |
5750 | ||
e36284ab AM |
5751 | if (bed->elf_backend_modify_program_headers != NULL) |
5752 | { | |
5753 | if (!(*bed->elf_backend_modify_program_headers) (abfd, link_info)) | |
5754 | return FALSE; | |
5755 | } | |
5756 | ||
58e7ebac | 5757 | /* Set e_type in ELF header to ET_EXEC for -pie -Ttext-segment=. */ |
0e1862bb | 5758 | if (link_info != NULL && bfd_link_pie (link_info)) |
58e7ebac L |
5759 | { |
5760 | unsigned int num_segments = elf_elfheader (abfd)->e_phnum; | |
5761 | Elf_Internal_Phdr *segment = elf_tdata (abfd)->phdr; | |
5762 | Elf_Internal_Phdr *end_segment = &segment[num_segments]; | |
5763 | ||
5764 | /* Find the lowest p_vaddr in PT_LOAD segments. */ | |
5765 | bfd_vma p_vaddr = (bfd_vma) -1; | |
5766 | for (; segment < end_segment; segment++) | |
5767 | if (segment->p_type == PT_LOAD && p_vaddr > segment->p_vaddr) | |
5768 | p_vaddr = segment->p_vaddr; | |
5769 | ||
5770 | /* Set e_type to ET_EXEC if the lowest p_vaddr in PT_LOAD | |
5771 | segments is non-zero. */ | |
5772 | if (p_vaddr) | |
5773 | i_ehdrp->e_type = ET_EXEC; | |
5774 | } | |
5775 | ||
f3520d2f | 5776 | /* Write out the program headers. */ |
12bd6957 | 5777 | alloc = elf_program_header_size (abfd) / bed->s->sizeof_phdr; |
f3520d2f AM |
5778 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 |
5779 | || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0) | |
b34976b6 | 5780 | return FALSE; |
252b5132 RH |
5781 | } |
5782 | ||
b34976b6 | 5783 | return TRUE; |
252b5132 RH |
5784 | } |
5785 | ||
b34976b6 | 5786 | static bfd_boolean |
217aa764 | 5787 | prep_headers (bfd *abfd) |
252b5132 | 5788 | { |
3d540e93 | 5789 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form. */ |
2b0f7ef9 | 5790 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 5791 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
5792 | |
5793 | i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 5794 | |
2b0f7ef9 | 5795 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 5796 | if (shstrtab == NULL) |
b34976b6 | 5797 | return FALSE; |
252b5132 RH |
5798 | |
5799 | elf_shstrtab (abfd) = shstrtab; | |
5800 | ||
5801 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
5802 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
5803 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
5804 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
5805 | ||
5806 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
5807 | i_ehdrp->e_ident[EI_DATA] = | |
5808 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
5809 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
5810 | ||
252b5132 RH |
5811 | if ((abfd->flags & DYNAMIC) != 0) |
5812 | i_ehdrp->e_type = ET_DYN; | |
5813 | else if ((abfd->flags & EXEC_P) != 0) | |
5814 | i_ehdrp->e_type = ET_EXEC; | |
5815 | else if (bfd_get_format (abfd) == bfd_core) | |
5816 | i_ehdrp->e_type = ET_CORE; | |
5817 | else | |
5818 | i_ehdrp->e_type = ET_REL; | |
5819 | ||
5820 | switch (bfd_get_arch (abfd)) | |
5821 | { | |
5822 | case bfd_arch_unknown: | |
5823 | i_ehdrp->e_machine = EM_NONE; | |
5824 | break; | |
aa4f99bb AO |
5825 | |
5826 | /* There used to be a long list of cases here, each one setting | |
5827 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
5828 | in the corresponding bfd definition. To avoid duplication, | |
5829 | the switch was removed. Machines that need special handling | |
5830 | can generally do it in elf_backend_final_write_processing(), | |
5831 | unless they need the information earlier than the final write. | |
5832 | Such need can generally be supplied by replacing the tests for | |
5833 | e_machine with the conditions used to determine it. */ | |
252b5132 | 5834 | default: |
9c5bfbb7 AM |
5835 | i_ehdrp->e_machine = bed->elf_machine_code; |
5836 | } | |
aa4f99bb | 5837 | |
252b5132 RH |
5838 | i_ehdrp->e_version = bed->s->ev_current; |
5839 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
5840 | ||
c044fabd | 5841 | /* No program header, for now. */ |
252b5132 RH |
5842 | i_ehdrp->e_phoff = 0; |
5843 | i_ehdrp->e_phentsize = 0; | |
5844 | i_ehdrp->e_phnum = 0; | |
5845 | ||
c044fabd | 5846 | /* Each bfd section is section header entry. */ |
252b5132 RH |
5847 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
5848 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
5849 | ||
c044fabd | 5850 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 5851 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
5852 | /* It all happens later. */ |
5853 | ; | |
252b5132 RH |
5854 | else |
5855 | { | |
5856 | i_ehdrp->e_phentsize = 0; | |
252b5132 RH |
5857 | i_ehdrp->e_phoff = 0; |
5858 | } | |
5859 | ||
5860 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 5861 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 5862 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 5863 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 5864 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 5865 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 | 5866 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
17ca87fc | 5867 | || elf_tdata (abfd)->strtab_hdr.sh_name == (unsigned int) -1 |
252b5132 | 5868 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 5869 | return FALSE; |
252b5132 | 5870 | |
b34976b6 | 5871 | return TRUE; |
252b5132 RH |
5872 | } |
5873 | ||
5874 | /* Assign file positions for all the reloc sections which are not part | |
a485e98e | 5875 | of the loadable file image, and the file position of section headers. */ |
252b5132 | 5876 | |
0ce398f1 L |
5877 | static bfd_boolean |
5878 | _bfd_elf_assign_file_positions_for_non_load (bfd *abfd) | |
252b5132 RH |
5879 | { |
5880 | file_ptr off; | |
e06efbf1 | 5881 | Elf_Internal_Shdr **shdrpp, **end_shdrpp; |
3e19fb8f | 5882 | Elf_Internal_Shdr *shdrp; |
a485e98e AM |
5883 | Elf_Internal_Ehdr *i_ehdrp; |
5884 | const struct elf_backend_data *bed; | |
252b5132 | 5885 | |
12bd6957 | 5886 | off = elf_next_file_pos (abfd); |
252b5132 | 5887 | |
e06efbf1 L |
5888 | shdrpp = elf_elfsections (abfd); |
5889 | end_shdrpp = shdrpp + elf_numsections (abfd); | |
5890 | for (shdrpp++; shdrpp < end_shdrpp; shdrpp++) | |
252b5132 | 5891 | { |
252b5132 | 5892 | shdrp = *shdrpp; |
0ce398f1 L |
5893 | if (shdrp->sh_offset == -1) |
5894 | { | |
3e19fb8f | 5895 | asection *sec = shdrp->bfd_section; |
0ce398f1 L |
5896 | bfd_boolean is_rel = (shdrp->sh_type == SHT_REL |
5897 | || shdrp->sh_type == SHT_RELA); | |
5898 | if (is_rel | |
3e19fb8f | 5899 | || (sec != NULL && (sec->flags & SEC_ELF_COMPRESS))) |
0ce398f1 L |
5900 | { |
5901 | if (!is_rel) | |
5902 | { | |
3e19fb8f L |
5903 | const char *name = sec->name; |
5904 | struct bfd_elf_section_data *d; | |
5905 | ||
0ce398f1 | 5906 | /* Compress DWARF debug sections. */ |
3e19fb8f | 5907 | if (!bfd_compress_section (abfd, sec, |
0ce398f1 L |
5908 | shdrp->contents)) |
5909 | return FALSE; | |
3e19fb8f L |
5910 | |
5911 | if (sec->compress_status == COMPRESS_SECTION_DONE | |
5912 | && (abfd->flags & BFD_COMPRESS_GABI) == 0) | |
5913 | { | |
5914 | /* If section is compressed with zlib-gnu, convert | |
5915 | section name from .debug_* to .zdebug_*. */ | |
5916 | char *new_name | |
5917 | = convert_debug_to_zdebug (abfd, name); | |
5918 | if (new_name == NULL) | |
5919 | return FALSE; | |
5920 | name = new_name; | |
5921 | } | |
5922 | /* Add setion name to section name section. */ | |
5923 | if (shdrp->sh_name != (unsigned int) -1) | |
5924 | abort (); | |
5925 | shdrp->sh_name | |
5926 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
5927 | name, FALSE); | |
5928 | d = elf_section_data (sec); | |
5929 | ||
5930 | /* Add reloc setion name to section name section. */ | |
5931 | if (d->rel.hdr | |
5932 | && !_bfd_elf_set_reloc_sh_name (abfd, | |
5933 | d->rel.hdr, | |
5934 | name, FALSE)) | |
5935 | return FALSE; | |
5936 | if (d->rela.hdr | |
5937 | && !_bfd_elf_set_reloc_sh_name (abfd, | |
5938 | d->rela.hdr, | |
91cb26da | 5939 | name, TRUE)) |
3e19fb8f L |
5940 | return FALSE; |
5941 | ||
0ce398f1 | 5942 | /* Update section size and contents. */ |
3e19fb8f L |
5943 | shdrp->sh_size = sec->size; |
5944 | shdrp->contents = sec->contents; | |
0ce398f1 L |
5945 | shdrp->bfd_section->contents = NULL; |
5946 | } | |
5947 | off = _bfd_elf_assign_file_position_for_section (shdrp, | |
5948 | off, | |
5949 | TRUE); | |
5950 | } | |
5951 | } | |
252b5132 RH |
5952 | } |
5953 | ||
3e19fb8f L |
5954 | /* Place section name section after DWARF debug sections have been |
5955 | compressed. */ | |
5956 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); | |
5957 | shdrp = &elf_tdata (abfd)->shstrtab_hdr; | |
5958 | shdrp->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
5959 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); | |
5960 | ||
5961 | /* Place the section headers. */ | |
a485e98e AM |
5962 | i_ehdrp = elf_elfheader (abfd); |
5963 | bed = get_elf_backend_data (abfd); | |
5964 | off = align_file_position (off, 1 << bed->s->log_file_align); | |
5965 | i_ehdrp->e_shoff = off; | |
5966 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
12bd6957 | 5967 | elf_next_file_pos (abfd) = off; |
0ce398f1 L |
5968 | |
5969 | return TRUE; | |
252b5132 RH |
5970 | } |
5971 | ||
b34976b6 | 5972 | bfd_boolean |
217aa764 | 5973 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 5974 | { |
9c5bfbb7 | 5975 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 5976 | Elf_Internal_Shdr **i_shdrp; |
b34976b6 | 5977 | bfd_boolean failed; |
9ad5cbcf | 5978 | unsigned int count, num_sec; |
30e8ee25 | 5979 | struct elf_obj_tdata *t; |
252b5132 RH |
5980 | |
5981 | if (! abfd->output_has_begun | |
217aa764 | 5982 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 5983 | return FALSE; |
252b5132 RH |
5984 | |
5985 | i_shdrp = elf_elfsections (abfd); | |
252b5132 | 5986 | |
b34976b6 | 5987 | failed = FALSE; |
252b5132 RH |
5988 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
5989 | if (failed) | |
b34976b6 | 5990 | return FALSE; |
252b5132 | 5991 | |
0ce398f1 L |
5992 | if (!_bfd_elf_assign_file_positions_for_non_load (abfd)) |
5993 | return FALSE; | |
252b5132 | 5994 | |
c044fabd | 5995 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
5996 | num_sec = elf_numsections (abfd); |
5997 | for (count = 1; count < num_sec; count++) | |
252b5132 | 5998 | { |
3e19fb8f L |
5999 | i_shdrp[count]->sh_name |
6000 | = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
6001 | i_shdrp[count]->sh_name); | |
252b5132 RH |
6002 | if (bed->elf_backend_section_processing) |
6003 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
6004 | if (i_shdrp[count]->contents) | |
6005 | { | |
dc810e39 AM |
6006 | bfd_size_type amt = i_shdrp[count]->sh_size; |
6007 | ||
252b5132 | 6008 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 6009 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 6010 | return FALSE; |
252b5132 RH |
6011 | } |
6012 | } | |
6013 | ||
6014 | /* Write out the section header names. */ | |
30e8ee25 | 6015 | t = elf_tdata (abfd); |
26ae6d5e | 6016 | if (elf_shstrtab (abfd) != NULL |
30e8ee25 | 6017 | && (bfd_seek (abfd, t->shstrtab_hdr.sh_offset, SEEK_SET) != 0 |
08a40648 | 6018 | || !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) |
b34976b6 | 6019 | return FALSE; |
252b5132 RH |
6020 | |
6021 | if (bed->elf_backend_final_write_processing) | |
12bd6957 | 6022 | (*bed->elf_backend_final_write_processing) (abfd, elf_linker (abfd)); |
252b5132 | 6023 | |
ff59fc36 RM |
6024 | if (!bed->s->write_shdrs_and_ehdr (abfd)) |
6025 | return FALSE; | |
6026 | ||
6027 | /* This is last since write_shdrs_and_ehdr can touch i_shdrp[0]. */ | |
c0355132 AM |
6028 | if (t->o->build_id.after_write_object_contents != NULL) |
6029 | return (*t->o->build_id.after_write_object_contents) (abfd); | |
ff59fc36 RM |
6030 | |
6031 | return TRUE; | |
252b5132 RH |
6032 | } |
6033 | ||
b34976b6 | 6034 | bfd_boolean |
217aa764 | 6035 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 6036 | { |
c044fabd | 6037 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
6038 | return _bfd_elf_write_object_contents (abfd); |
6039 | } | |
c044fabd KH |
6040 | |
6041 | /* Given a section, search the header to find them. */ | |
6042 | ||
cb33740c | 6043 | unsigned int |
198beae2 | 6044 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 6045 | { |
9c5bfbb7 | 6046 | const struct elf_backend_data *bed; |
91d6fa6a | 6047 | unsigned int sec_index; |
252b5132 | 6048 | |
9ad5cbcf AM |
6049 | if (elf_section_data (asect) != NULL |
6050 | && elf_section_data (asect)->this_idx != 0) | |
6051 | return elf_section_data (asect)->this_idx; | |
6052 | ||
6053 | if (bfd_is_abs_section (asect)) | |
91d6fa6a | 6054 | sec_index = SHN_ABS; |
af746e92 | 6055 | else if (bfd_is_com_section (asect)) |
91d6fa6a | 6056 | sec_index = SHN_COMMON; |
af746e92 | 6057 | else if (bfd_is_und_section (asect)) |
91d6fa6a | 6058 | sec_index = SHN_UNDEF; |
af746e92 | 6059 | else |
91d6fa6a | 6060 | sec_index = SHN_BAD; |
252b5132 | 6061 | |
af746e92 | 6062 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
6063 | if (bed->elf_backend_section_from_bfd_section) |
6064 | { | |
91d6fa6a | 6065 | int retval = sec_index; |
9ad5cbcf | 6066 | |
af746e92 AM |
6067 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
6068 | return retval; | |
252b5132 RH |
6069 | } |
6070 | ||
91d6fa6a | 6071 | if (sec_index == SHN_BAD) |
af746e92 | 6072 | bfd_set_error (bfd_error_nonrepresentable_section); |
252b5132 | 6073 | |
91d6fa6a | 6074 | return sec_index; |
252b5132 RH |
6075 | } |
6076 | ||
6077 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
6078 | on error. */ | |
6079 | ||
6080 | int | |
217aa764 | 6081 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
6082 | { |
6083 | asymbol *asym_ptr = *asym_ptr_ptr; | |
6084 | int idx; | |
6085 | flagword flags = asym_ptr->flags; | |
6086 | ||
6087 | /* When gas creates relocations against local labels, it creates its | |
6088 | own symbol for the section, but does put the symbol into the | |
6089 | symbol chain, so udata is 0. When the linker is generating | |
6090 | relocatable output, this section symbol may be for one of the | |
6091 | input sections rather than the output section. */ | |
6092 | if (asym_ptr->udata.i == 0 | |
6093 | && (flags & BSF_SECTION_SYM) | |
6094 | && asym_ptr->section) | |
6095 | { | |
5372391b | 6096 | asection *sec; |
252b5132 RH |
6097 | int indx; |
6098 | ||
5372391b AM |
6099 | sec = asym_ptr->section; |
6100 | if (sec->owner != abfd && sec->output_section != NULL) | |
6101 | sec = sec->output_section; | |
6102 | if (sec->owner == abfd | |
6103 | && (indx = sec->index) < elf_num_section_syms (abfd) | |
4e89ac30 | 6104 | && elf_section_syms (abfd)[indx] != NULL) |
252b5132 RH |
6105 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
6106 | } | |
6107 | ||
6108 | idx = asym_ptr->udata.i; | |
6109 | ||
6110 | if (idx == 0) | |
6111 | { | |
6112 | /* This case can occur when using --strip-symbol on a symbol | |
08a40648 | 6113 | which is used in a relocation entry. */ |
252b5132 | 6114 | (*_bfd_error_handler) |
d003868e AM |
6115 | (_("%B: symbol `%s' required but not present"), |
6116 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
6117 | bfd_set_error (bfd_error_no_symbols); |
6118 | return -1; | |
6119 | } | |
6120 | ||
6121 | #if DEBUG & 4 | |
6122 | { | |
6123 | fprintf (stderr, | |
9ccb8af9 AM |
6124 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx\n", |
6125 | (long) asym_ptr, asym_ptr->name, idx, (long) flags); | |
252b5132 RH |
6126 | fflush (stderr); |
6127 | } | |
6128 | #endif | |
6129 | ||
6130 | return idx; | |
6131 | } | |
6132 | ||
84d1d650 | 6133 | /* Rewrite program header information. */ |
252b5132 | 6134 | |
b34976b6 | 6135 | static bfd_boolean |
84d1d650 | 6136 | rewrite_elf_program_header (bfd *ibfd, bfd *obfd) |
252b5132 | 6137 | { |
b34976b6 AM |
6138 | Elf_Internal_Ehdr *iehdr; |
6139 | struct elf_segment_map *map; | |
6140 | struct elf_segment_map *map_first; | |
6141 | struct elf_segment_map **pointer_to_map; | |
6142 | Elf_Internal_Phdr *segment; | |
6143 | asection *section; | |
6144 | unsigned int i; | |
6145 | unsigned int num_segments; | |
6146 | bfd_boolean phdr_included = FALSE; | |
5c44b38e | 6147 | bfd_boolean p_paddr_valid; |
b34976b6 AM |
6148 | bfd_vma maxpagesize; |
6149 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
6150 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 6151 | const struct elf_backend_data *bed; |
bc67d8a6 | 6152 | |
caf47ea6 | 6153 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
6154 | iehdr = elf_elfheader (ibfd); |
6155 | ||
bc67d8a6 | 6156 | map_first = NULL; |
c044fabd | 6157 | pointer_to_map = &map_first; |
252b5132 RH |
6158 | |
6159 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
6160 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
6161 | ||
6162 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
6163 | #define SEGMENT_END(segment, start) \ |
6164 | (start + (segment->p_memsz > segment->p_filesz \ | |
6165 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 6166 | |
eecdbe52 JJ |
6167 | #define SECTION_SIZE(section, segment) \ |
6168 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
6169 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 6170 | ? section->size : 0) |
eecdbe52 | 6171 | |
b34976b6 | 6172 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 6173 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
6174 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
6175 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 6176 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 6177 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 6178 | |
b34976b6 | 6179 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 6180 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
6181 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
6182 | (section->lma >= base \ | |
eecdbe52 | 6183 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 6184 | <= SEGMENT_END (segment, base))) |
252b5132 | 6185 | |
0efc80c8 L |
6186 | /* Handle PT_NOTE segment. */ |
6187 | #define IS_NOTE(p, s) \ | |
aecc8f8a | 6188 | (p->p_type == PT_NOTE \ |
0efc80c8 | 6189 | && elf_section_type (s) == SHT_NOTE \ |
aecc8f8a | 6190 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 6191 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 6192 | <= p->p_offset + p->p_filesz)) |
252b5132 | 6193 | |
0efc80c8 L |
6194 | /* Special case: corefile "NOTE" section containing regs, prpsinfo |
6195 | etc. */ | |
6196 | #define IS_COREFILE_NOTE(p, s) \ | |
6197 | (IS_NOTE (p, s) \ | |
6198 | && bfd_get_format (ibfd) == bfd_core \ | |
6199 | && s->vma == 0 \ | |
6200 | && s->lma == 0) | |
6201 | ||
252b5132 RH |
6202 | /* The complicated case when p_vaddr is 0 is to handle the Solaris |
6203 | linker, which generates a PT_INTERP section with p_vaddr and | |
6204 | p_memsz set to 0. */ | |
aecc8f8a AM |
6205 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
6206 | (p->p_vaddr == 0 \ | |
6207 | && p->p_paddr == 0 \ | |
6208 | && p->p_memsz == 0 \ | |
6209 | && p->p_filesz > 0 \ | |
6210 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 6211 | && s->size > 0 \ |
aecc8f8a | 6212 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 6213 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 6214 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 6215 | |
bc67d8a6 NC |
6216 | /* Decide if the given section should be included in the given segment. |
6217 | A section will be included if: | |
f5ffc919 | 6218 | 1. It is within the address space of the segment -- we use the LMA |
08a40648 | 6219 | if that is set for the segment and the VMA otherwise, |
0efc80c8 | 6220 | 2. It is an allocated section or a NOTE section in a PT_NOTE |
d324f6d6 | 6221 | segment. |
bc67d8a6 | 6222 | 3. There is an output section associated with it, |
eecdbe52 | 6223 | 4. The section has not already been allocated to a previous segment. |
2b05f1b7 | 6224 | 5. PT_GNU_STACK segments do not include any sections. |
03394ac9 | 6225 | 6. PT_TLS segment includes only SHF_TLS sections. |
6f79b219 JJ |
6226 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
6227 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
08a40648 | 6228 | (with the possible exception of .dynamic). */ |
9f17e2a6 | 6229 | #define IS_SECTION_IN_INPUT_SEGMENT(section, segment, bed) \ |
2b05f1b7 L |
6230 | ((((segment->p_paddr \ |
6231 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
6232 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
6233 | && (section->flags & SEC_ALLOC) != 0) \ | |
0efc80c8 | 6234 | || IS_NOTE (segment, section)) \ |
2b05f1b7 L |
6235 | && segment->p_type != PT_GNU_STACK \ |
6236 | && (segment->p_type != PT_TLS \ | |
6237 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
6238 | && (segment->p_type == PT_LOAD \ | |
6239 | || segment->p_type == PT_TLS \ | |
6240 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
6241 | && (segment->p_type != PT_DYNAMIC \ | |
6242 | || SECTION_SIZE (section, segment) > 0 \ | |
6243 | || (segment->p_paddr \ | |
6244 | ? segment->p_paddr != section->lma \ | |
6245 | : segment->p_vaddr != section->vma) \ | |
6246 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
6247 | == 0)) \ | |
0067a569 | 6248 | && !section->segment_mark) |
bc67d8a6 | 6249 | |
9f17e2a6 L |
6250 | /* If the output section of a section in the input segment is NULL, |
6251 | it is removed from the corresponding output segment. */ | |
6252 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ | |
6253 | (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed) \ | |
6254 | && section->output_section != NULL) | |
6255 | ||
b34976b6 | 6256 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
6257 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
6258 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
6259 | ||
6260 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
6261 | their VMA address ranges and their LMA address ranges overlap. | |
6262 | It is possible to have overlapping VMA ranges without overlapping LMA | |
6263 | ranges. RedBoot images for example can have both .data and .bss mapped | |
6264 | to the same VMA range, but with the .data section mapped to a different | |
6265 | LMA. */ | |
aecc8f8a | 6266 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea | 6267 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
08a40648 | 6268 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ |
b5f852ea | 6269 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ |
08a40648 | 6270 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) |
bc67d8a6 NC |
6271 | |
6272 | /* Initialise the segment mark field. */ | |
6273 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 6274 | section->segment_mark = FALSE; |
bc67d8a6 | 6275 | |
5c44b38e AM |
6276 | /* The Solaris linker creates program headers in which all the |
6277 | p_paddr fields are zero. When we try to objcopy or strip such a | |
6278 | file, we get confused. Check for this case, and if we find it | |
6279 | don't set the p_paddr_valid fields. */ | |
6280 | p_paddr_valid = FALSE; | |
6281 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
6282 | i < num_segments; | |
6283 | i++, segment++) | |
6284 | if (segment->p_paddr != 0) | |
6285 | { | |
6286 | p_paddr_valid = TRUE; | |
6287 | break; | |
6288 | } | |
6289 | ||
252b5132 | 6290 | /* Scan through the segments specified in the program header |
bc67d8a6 | 6291 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 6292 | in the loadable segments. These can be created by weird |
aecc8f8a | 6293 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
6294 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
6295 | i < num_segments; | |
c044fabd | 6296 | i++, segment++) |
252b5132 | 6297 | { |
252b5132 | 6298 | unsigned int j; |
c044fabd | 6299 | Elf_Internal_Phdr *segment2; |
252b5132 | 6300 | |
aecc8f8a AM |
6301 | if (segment->p_type == PT_INTERP) |
6302 | for (section = ibfd->sections; section; section = section->next) | |
6303 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
6304 | { | |
6305 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 6306 | assignment code will work. */ |
aecc8f8a AM |
6307 | segment->p_vaddr = section->vma; |
6308 | break; | |
6309 | } | |
6310 | ||
bc67d8a6 | 6311 | if (segment->p_type != PT_LOAD) |
b10a8ae0 L |
6312 | { |
6313 | /* Remove PT_GNU_RELRO segment. */ | |
6314 | if (segment->p_type == PT_GNU_RELRO) | |
6315 | segment->p_type = PT_NULL; | |
6316 | continue; | |
6317 | } | |
c044fabd | 6318 | |
bc67d8a6 | 6319 | /* Determine if this segment overlaps any previous segments. */ |
0067a569 | 6320 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2++) |
bc67d8a6 NC |
6321 | { |
6322 | bfd_signed_vma extra_length; | |
c044fabd | 6323 | |
bc67d8a6 | 6324 | if (segment2->p_type != PT_LOAD |
0067a569 | 6325 | || !SEGMENT_OVERLAPS (segment, segment2)) |
bc67d8a6 | 6326 | continue; |
c044fabd | 6327 | |
bc67d8a6 NC |
6328 | /* Merge the two segments together. */ |
6329 | if (segment2->p_vaddr < segment->p_vaddr) | |
6330 | { | |
c044fabd | 6331 | /* Extend SEGMENT2 to include SEGMENT and then delete |
08a40648 | 6332 | SEGMENT. */ |
0067a569 AM |
6333 | extra_length = (SEGMENT_END (segment, segment->p_vaddr) |
6334 | - SEGMENT_END (segment2, segment2->p_vaddr)); | |
c044fabd | 6335 | |
bc67d8a6 NC |
6336 | if (extra_length > 0) |
6337 | { | |
0067a569 | 6338 | segment2->p_memsz += extra_length; |
bc67d8a6 NC |
6339 | segment2->p_filesz += extra_length; |
6340 | } | |
c044fabd | 6341 | |
bc67d8a6 | 6342 | segment->p_type = PT_NULL; |
c044fabd | 6343 | |
bc67d8a6 NC |
6344 | /* Since we have deleted P we must restart the outer loop. */ |
6345 | i = 0; | |
6346 | segment = elf_tdata (ibfd)->phdr; | |
6347 | break; | |
6348 | } | |
6349 | else | |
6350 | { | |
c044fabd | 6351 | /* Extend SEGMENT to include SEGMENT2 and then delete |
08a40648 | 6352 | SEGMENT2. */ |
0067a569 AM |
6353 | extra_length = (SEGMENT_END (segment2, segment2->p_vaddr) |
6354 | - SEGMENT_END (segment, segment->p_vaddr)); | |
c044fabd | 6355 | |
bc67d8a6 NC |
6356 | if (extra_length > 0) |
6357 | { | |
0067a569 | 6358 | segment->p_memsz += extra_length; |
bc67d8a6 NC |
6359 | segment->p_filesz += extra_length; |
6360 | } | |
c044fabd | 6361 | |
bc67d8a6 NC |
6362 | segment2->p_type = PT_NULL; |
6363 | } | |
6364 | } | |
6365 | } | |
c044fabd | 6366 | |
bc67d8a6 NC |
6367 | /* The second scan attempts to assign sections to segments. */ |
6368 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
6369 | i < num_segments; | |
0067a569 | 6370 | i++, segment++) |
bc67d8a6 | 6371 | { |
0067a569 AM |
6372 | unsigned int section_count; |
6373 | asection **sections; | |
6374 | asection *output_section; | |
6375 | unsigned int isec; | |
6376 | bfd_vma matching_lma; | |
6377 | bfd_vma suggested_lma; | |
6378 | unsigned int j; | |
dc810e39 | 6379 | bfd_size_type amt; |
0067a569 AM |
6380 | asection *first_section; |
6381 | bfd_boolean first_matching_lma; | |
6382 | bfd_boolean first_suggested_lma; | |
bc67d8a6 NC |
6383 | |
6384 | if (segment->p_type == PT_NULL) | |
6385 | continue; | |
c044fabd | 6386 | |
9f17e2a6 | 6387 | first_section = NULL; |
bc67d8a6 | 6388 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
6389 | for (section = ibfd->sections, section_count = 0; |
6390 | section != NULL; | |
6391 | section = section->next) | |
9f17e2a6 L |
6392 | { |
6393 | /* Find the first section in the input segment, which may be | |
6394 | removed from the corresponding output segment. */ | |
6395 | if (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed)) | |
6396 | { | |
6397 | if (first_section == NULL) | |
6398 | first_section = section; | |
6399 | if (section->output_section != NULL) | |
6400 | ++section_count; | |
6401 | } | |
6402 | } | |
811072d8 | 6403 | |
b5f852ea NC |
6404 | /* Allocate a segment map big enough to contain |
6405 | all of the sections we have selected. */ | |
dc810e39 AM |
6406 | amt = sizeof (struct elf_segment_map); |
6407 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
a50b1753 | 6408 | map = (struct elf_segment_map *) bfd_zalloc (obfd, amt); |
bc67d8a6 | 6409 | if (map == NULL) |
b34976b6 | 6410 | return FALSE; |
252b5132 RH |
6411 | |
6412 | /* Initialise the fields of the segment map. Default to | |
6413 | using the physical address of the segment in the input BFD. */ | |
0067a569 AM |
6414 | map->next = NULL; |
6415 | map->p_type = segment->p_type; | |
6416 | map->p_flags = segment->p_flags; | |
bc67d8a6 | 6417 | map->p_flags_valid = 1; |
55d55ac7 | 6418 | |
9f17e2a6 L |
6419 | /* If the first section in the input segment is removed, there is |
6420 | no need to preserve segment physical address in the corresponding | |
6421 | output segment. */ | |
945c025a | 6422 | if (!first_section || first_section->output_section != NULL) |
9f17e2a6 L |
6423 | { |
6424 | map->p_paddr = segment->p_paddr; | |
5c44b38e | 6425 | map->p_paddr_valid = p_paddr_valid; |
9f17e2a6 | 6426 | } |
252b5132 RH |
6427 | |
6428 | /* Determine if this segment contains the ELF file header | |
6429 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
6430 | map->includes_filehdr = (segment->p_offset == 0 |
6431 | && segment->p_filesz >= iehdr->e_ehsize); | |
bc67d8a6 | 6432 | map->includes_phdrs = 0; |
252b5132 | 6433 | |
0067a569 | 6434 | if (!phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 6435 | { |
bc67d8a6 NC |
6436 | map->includes_phdrs = |
6437 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
6438 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
6439 | >= ((bfd_vma) iehdr->e_phoff |
6440 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 6441 | |
bc67d8a6 | 6442 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 6443 | phdr_included = TRUE; |
252b5132 RH |
6444 | } |
6445 | ||
bc67d8a6 | 6446 | if (section_count == 0) |
252b5132 RH |
6447 | { |
6448 | /* Special segments, such as the PT_PHDR segment, may contain | |
6449 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
6450 | something. They are allowed by the ELF spec however, so only |
6451 | a warning is produced. */ | |
bc67d8a6 | 6452 | if (segment->p_type == PT_LOAD) |
c86934ce NC |
6453 | (*_bfd_error_handler) (_("\ |
6454 | %B: warning: Empty loadable segment detected, is this intentional ?"), | |
0067a569 | 6455 | ibfd); |
252b5132 | 6456 | |
bc67d8a6 | 6457 | map->count = 0; |
c044fabd KH |
6458 | *pointer_to_map = map; |
6459 | pointer_to_map = &map->next; | |
252b5132 RH |
6460 | |
6461 | continue; | |
6462 | } | |
6463 | ||
6464 | /* Now scan the sections in the input BFD again and attempt | |
6465 | to add their corresponding output sections to the segment map. | |
6466 | The problem here is how to handle an output section which has | |
6467 | been moved (ie had its LMA changed). There are four possibilities: | |
6468 | ||
6469 | 1. None of the sections have been moved. | |
6470 | In this case we can continue to use the segment LMA from the | |
6471 | input BFD. | |
6472 | ||
6473 | 2. All of the sections have been moved by the same amount. | |
6474 | In this case we can change the segment's LMA to match the LMA | |
6475 | of the first section. | |
6476 | ||
6477 | 3. Some of the sections have been moved, others have not. | |
6478 | In this case those sections which have not been moved can be | |
6479 | placed in the current segment which will have to have its size, | |
6480 | and possibly its LMA changed, and a new segment or segments will | |
6481 | have to be created to contain the other sections. | |
6482 | ||
b5f852ea | 6483 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
6484 | In this case we can change the segment's LMA to match the LMA |
6485 | of the first section and we will have to create a new segment | |
6486 | or segments to contain the other sections. | |
6487 | ||
6488 | In order to save time, we allocate an array to hold the section | |
6489 | pointers that we are interested in. As these sections get assigned | |
6490 | to a segment, they are removed from this array. */ | |
6491 | ||
a50b1753 | 6492 | sections = (asection **) bfd_malloc2 (section_count, sizeof (asection *)); |
252b5132 | 6493 | if (sections == NULL) |
b34976b6 | 6494 | return FALSE; |
252b5132 RH |
6495 | |
6496 | /* Step One: Scan for segment vs section LMA conflicts. | |
6497 | Also add the sections to the section array allocated above. | |
6498 | Also add the sections to the current segment. In the common | |
6499 | case, where the sections have not been moved, this means that | |
6500 | we have completely filled the segment, and there is nothing | |
6501 | more to do. */ | |
252b5132 | 6502 | isec = 0; |
72730e0c | 6503 | matching_lma = 0; |
252b5132 | 6504 | suggested_lma = 0; |
0067a569 AM |
6505 | first_matching_lma = TRUE; |
6506 | first_suggested_lma = TRUE; | |
252b5132 | 6507 | |
461c4b2e | 6508 | for (section = first_section, j = 0; |
bc67d8a6 NC |
6509 | section != NULL; |
6510 | section = section->next) | |
252b5132 | 6511 | { |
caf47ea6 | 6512 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 6513 | { |
bc67d8a6 NC |
6514 | output_section = section->output_section; |
6515 | ||
0067a569 | 6516 | sections[j++] = section; |
252b5132 RH |
6517 | |
6518 | /* The Solaris native linker always sets p_paddr to 0. | |
6519 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
6520 | correct value. Note - some backends require that |
6521 | p_paddr be left as zero. */ | |
5c44b38e | 6522 | if (!p_paddr_valid |
4455705d | 6523 | && segment->p_vaddr != 0 |
0067a569 | 6524 | && !bed->want_p_paddr_set_to_zero |
252b5132 | 6525 | && isec == 0 |
bc67d8a6 | 6526 | && output_section->lma != 0 |
0067a569 AM |
6527 | && output_section->vma == (segment->p_vaddr |
6528 | + (map->includes_filehdr | |
6529 | ? iehdr->e_ehsize | |
6530 | : 0) | |
6531 | + (map->includes_phdrs | |
6532 | ? (iehdr->e_phnum | |
6533 | * iehdr->e_phentsize) | |
6534 | : 0))) | |
bc67d8a6 | 6535 | map->p_paddr = segment->p_vaddr; |
252b5132 RH |
6536 | |
6537 | /* Match up the physical address of the segment with the | |
6538 | LMA address of the output section. */ | |
bc67d8a6 | 6539 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 | 6540 | || IS_COREFILE_NOTE (segment, section) |
0067a569 AM |
6541 | || (bed->want_p_paddr_set_to_zero |
6542 | && IS_CONTAINED_BY_VMA (output_section, segment))) | |
252b5132 | 6543 | { |
0067a569 AM |
6544 | if (first_matching_lma || output_section->lma < matching_lma) |
6545 | { | |
6546 | matching_lma = output_section->lma; | |
6547 | first_matching_lma = FALSE; | |
6548 | } | |
252b5132 RH |
6549 | |
6550 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 6551 | then it does not overlap any other section within that |
252b5132 | 6552 | segment. */ |
0067a569 AM |
6553 | map->sections[isec++] = output_section; |
6554 | } | |
6555 | else if (first_suggested_lma) | |
6556 | { | |
6557 | suggested_lma = output_section->lma; | |
6558 | first_suggested_lma = FALSE; | |
252b5132 | 6559 | } |
147d51c2 L |
6560 | |
6561 | if (j == section_count) | |
6562 | break; | |
252b5132 RH |
6563 | } |
6564 | } | |
6565 | ||
bc67d8a6 | 6566 | BFD_ASSERT (j == section_count); |
252b5132 RH |
6567 | |
6568 | /* Step Two: Adjust the physical address of the current segment, | |
6569 | if necessary. */ | |
bc67d8a6 | 6570 | if (isec == section_count) |
252b5132 RH |
6571 | { |
6572 | /* All of the sections fitted within the segment as currently | |
6573 | specified. This is the default case. Add the segment to | |
6574 | the list of built segments and carry on to process the next | |
6575 | program header in the input BFD. */ | |
bc67d8a6 | 6576 | map->count = section_count; |
c044fabd KH |
6577 | *pointer_to_map = map; |
6578 | pointer_to_map = &map->next; | |
08a40648 | 6579 | |
5c44b38e AM |
6580 | if (p_paddr_valid |
6581 | && !bed->want_p_paddr_set_to_zero | |
147d51c2 | 6582 | && matching_lma != map->p_paddr |
5c44b38e AM |
6583 | && !map->includes_filehdr |
6584 | && !map->includes_phdrs) | |
3271a814 NS |
6585 | /* There is some padding before the first section in the |
6586 | segment. So, we must account for that in the output | |
6587 | segment's vma. */ | |
6588 | map->p_vaddr_offset = matching_lma - map->p_paddr; | |
08a40648 | 6589 | |
252b5132 RH |
6590 | free (sections); |
6591 | continue; | |
6592 | } | |
252b5132 RH |
6593 | else |
6594 | { | |
0067a569 | 6595 | if (!first_matching_lma) |
72730e0c AM |
6596 | { |
6597 | /* At least one section fits inside the current segment. | |
6598 | Keep it, but modify its physical address to match the | |
6599 | LMA of the first section that fitted. */ | |
bc67d8a6 | 6600 | map->p_paddr = matching_lma; |
72730e0c AM |
6601 | } |
6602 | else | |
6603 | { | |
6604 | /* None of the sections fitted inside the current segment. | |
6605 | Change the current segment's physical address to match | |
6606 | the LMA of the first section. */ | |
bc67d8a6 | 6607 | map->p_paddr = suggested_lma; |
72730e0c AM |
6608 | } |
6609 | ||
bc67d8a6 NC |
6610 | /* Offset the segment physical address from the lma |
6611 | to allow for space taken up by elf headers. */ | |
6612 | if (map->includes_filehdr) | |
010c8431 AM |
6613 | { |
6614 | if (map->p_paddr >= iehdr->e_ehsize) | |
6615 | map->p_paddr -= iehdr->e_ehsize; | |
6616 | else | |
6617 | { | |
6618 | map->includes_filehdr = FALSE; | |
6619 | map->includes_phdrs = FALSE; | |
6620 | } | |
6621 | } | |
252b5132 | 6622 | |
bc67d8a6 NC |
6623 | if (map->includes_phdrs) |
6624 | { | |
010c8431 AM |
6625 | if (map->p_paddr >= iehdr->e_phnum * iehdr->e_phentsize) |
6626 | { | |
6627 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
6628 | ||
6629 | /* iehdr->e_phnum is just an estimate of the number | |
6630 | of program headers that we will need. Make a note | |
6631 | here of the number we used and the segment we chose | |
6632 | to hold these headers, so that we can adjust the | |
6633 | offset when we know the correct value. */ | |
6634 | phdr_adjust_num = iehdr->e_phnum; | |
6635 | phdr_adjust_seg = map; | |
6636 | } | |
6637 | else | |
6638 | map->includes_phdrs = FALSE; | |
bc67d8a6 | 6639 | } |
252b5132 RH |
6640 | } |
6641 | ||
6642 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 6643 | those that fit to the current segment and removing them from the |
252b5132 RH |
6644 | sections array; but making sure not to leave large gaps. Once all |
6645 | possible sections have been assigned to the current segment it is | |
6646 | added to the list of built segments and if sections still remain | |
6647 | to be assigned, a new segment is constructed before repeating | |
6648 | the loop. */ | |
6649 | isec = 0; | |
6650 | do | |
6651 | { | |
bc67d8a6 | 6652 | map->count = 0; |
252b5132 | 6653 | suggested_lma = 0; |
0067a569 | 6654 | first_suggested_lma = TRUE; |
252b5132 RH |
6655 | |
6656 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 6657 | for (j = 0; j < section_count; j++) |
252b5132 | 6658 | { |
bc67d8a6 | 6659 | section = sections[j]; |
252b5132 | 6660 | |
bc67d8a6 | 6661 | if (section == NULL) |
252b5132 RH |
6662 | continue; |
6663 | ||
bc67d8a6 | 6664 | output_section = section->output_section; |
252b5132 | 6665 | |
bc67d8a6 | 6666 | BFD_ASSERT (output_section != NULL); |
c044fabd | 6667 | |
bc67d8a6 NC |
6668 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
6669 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 6670 | { |
bc67d8a6 | 6671 | if (map->count == 0) |
252b5132 RH |
6672 | { |
6673 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
6674 | the beginning of the segment, then something is |
6675 | wrong. */ | |
0067a569 AM |
6676 | if (output_section->lma |
6677 | != (map->p_paddr | |
6678 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
6679 | + (map->includes_phdrs | |
6680 | ? iehdr->e_phnum * iehdr->e_phentsize | |
6681 | : 0))) | |
252b5132 RH |
6682 | abort (); |
6683 | } | |
6684 | else | |
6685 | { | |
0067a569 | 6686 | asection *prev_sec; |
252b5132 | 6687 | |
bc67d8a6 | 6688 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
6689 | |
6690 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
6691 | and the start of this section is more than |
6692 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 6693 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 6694 | maxpagesize) |
caf47ea6 | 6695 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
0067a569 | 6696 | || (prev_sec->lma + prev_sec->size |
079e9a2f | 6697 | > output_section->lma)) |
252b5132 | 6698 | { |
0067a569 AM |
6699 | if (first_suggested_lma) |
6700 | { | |
6701 | suggested_lma = output_section->lma; | |
6702 | first_suggested_lma = FALSE; | |
6703 | } | |
252b5132 RH |
6704 | |
6705 | continue; | |
6706 | } | |
6707 | } | |
6708 | ||
bc67d8a6 | 6709 | map->sections[map->count++] = output_section; |
252b5132 RH |
6710 | ++isec; |
6711 | sections[j] = NULL; | |
b34976b6 | 6712 | section->segment_mark = TRUE; |
252b5132 | 6713 | } |
0067a569 AM |
6714 | else if (first_suggested_lma) |
6715 | { | |
6716 | suggested_lma = output_section->lma; | |
6717 | first_suggested_lma = FALSE; | |
6718 | } | |
252b5132 RH |
6719 | } |
6720 | ||
bc67d8a6 | 6721 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
6722 | |
6723 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
6724 | *pointer_to_map = map; |
6725 | pointer_to_map = &map->next; | |
252b5132 | 6726 | |
bc67d8a6 | 6727 | if (isec < section_count) |
252b5132 RH |
6728 | { |
6729 | /* We still have not allocated all of the sections to | |
6730 | segments. Create a new segment here, initialise it | |
6731 | and carry on looping. */ | |
dc810e39 AM |
6732 | amt = sizeof (struct elf_segment_map); |
6733 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
5964fc3a | 6734 | map = (struct elf_segment_map *) bfd_zalloc (obfd, amt); |
bc67d8a6 | 6735 | if (map == NULL) |
5ed6aba4 NC |
6736 | { |
6737 | free (sections); | |
6738 | return FALSE; | |
6739 | } | |
252b5132 RH |
6740 | |
6741 | /* Initialise the fields of the segment map. Set the physical | |
6742 | physical address to the LMA of the first section that has | |
6743 | not yet been assigned. */ | |
0067a569 AM |
6744 | map->next = NULL; |
6745 | map->p_type = segment->p_type; | |
6746 | map->p_flags = segment->p_flags; | |
6747 | map->p_flags_valid = 1; | |
6748 | map->p_paddr = suggested_lma; | |
5c44b38e | 6749 | map->p_paddr_valid = p_paddr_valid; |
bc67d8a6 | 6750 | map->includes_filehdr = 0; |
0067a569 | 6751 | map->includes_phdrs = 0; |
252b5132 RH |
6752 | } |
6753 | } | |
bc67d8a6 | 6754 | while (isec < section_count); |
252b5132 RH |
6755 | |
6756 | free (sections); | |
6757 | } | |
6758 | ||
12bd6957 | 6759 | elf_seg_map (obfd) = map_first; |
bc67d8a6 NC |
6760 | |
6761 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 6762 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
6763 | the offset if necessary. */ |
6764 | if (phdr_adjust_seg != NULL) | |
6765 | { | |
6766 | unsigned int count; | |
c044fabd | 6767 | |
bc67d8a6 | 6768 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 6769 | count++; |
252b5132 | 6770 | |
bc67d8a6 NC |
6771 | if (count > phdr_adjust_num) |
6772 | phdr_adjust_seg->p_paddr | |
6773 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
6774 | } | |
c044fabd | 6775 | |
bc67d8a6 | 6776 | #undef SEGMENT_END |
eecdbe52 | 6777 | #undef SECTION_SIZE |
bc67d8a6 NC |
6778 | #undef IS_CONTAINED_BY_VMA |
6779 | #undef IS_CONTAINED_BY_LMA | |
0efc80c8 | 6780 | #undef IS_NOTE |
252b5132 | 6781 | #undef IS_COREFILE_NOTE |
bc67d8a6 | 6782 | #undef IS_SOLARIS_PT_INTERP |
9f17e2a6 | 6783 | #undef IS_SECTION_IN_INPUT_SEGMENT |
bc67d8a6 NC |
6784 | #undef INCLUDE_SECTION_IN_SEGMENT |
6785 | #undef SEGMENT_AFTER_SEGMENT | |
6786 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 6787 | return TRUE; |
252b5132 RH |
6788 | } |
6789 | ||
84d1d650 L |
6790 | /* Copy ELF program header information. */ |
6791 | ||
6792 | static bfd_boolean | |
6793 | copy_elf_program_header (bfd *ibfd, bfd *obfd) | |
6794 | { | |
6795 | Elf_Internal_Ehdr *iehdr; | |
6796 | struct elf_segment_map *map; | |
6797 | struct elf_segment_map *map_first; | |
6798 | struct elf_segment_map **pointer_to_map; | |
6799 | Elf_Internal_Phdr *segment; | |
6800 | unsigned int i; | |
6801 | unsigned int num_segments; | |
6802 | bfd_boolean phdr_included = FALSE; | |
88967714 | 6803 | bfd_boolean p_paddr_valid; |
84d1d650 L |
6804 | |
6805 | iehdr = elf_elfheader (ibfd); | |
6806 | ||
6807 | map_first = NULL; | |
6808 | pointer_to_map = &map_first; | |
6809 | ||
88967714 AM |
6810 | /* If all the segment p_paddr fields are zero, don't set |
6811 | map->p_paddr_valid. */ | |
6812 | p_paddr_valid = FALSE; | |
84d1d650 | 6813 | num_segments = elf_elfheader (ibfd)->e_phnum; |
88967714 AM |
6814 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
6815 | i < num_segments; | |
6816 | i++, segment++) | |
6817 | if (segment->p_paddr != 0) | |
6818 | { | |
6819 | p_paddr_valid = TRUE; | |
6820 | break; | |
6821 | } | |
6822 | ||
84d1d650 L |
6823 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
6824 | i < num_segments; | |
6825 | i++, segment++) | |
6826 | { | |
6827 | asection *section; | |
6828 | unsigned int section_count; | |
6829 | bfd_size_type amt; | |
6830 | Elf_Internal_Shdr *this_hdr; | |
53020534 | 6831 | asection *first_section = NULL; |
a76e6f2f | 6832 | asection *lowest_section; |
84d1d650 | 6833 | |
84d1d650 L |
6834 | /* Compute how many sections are in this segment. */ |
6835 | for (section = ibfd->sections, section_count = 0; | |
6836 | section != NULL; | |
6837 | section = section->next) | |
6838 | { | |
6839 | this_hdr = &(elf_section_data(section)->this_hdr); | |
f4638467 | 6840 | if (ELF_SECTION_IN_SEGMENT (this_hdr, segment)) |
3271a814 | 6841 | { |
a76e6f2f AM |
6842 | if (first_section == NULL) |
6843 | first_section = section; | |
3271a814 NS |
6844 | section_count++; |
6845 | } | |
84d1d650 L |
6846 | } |
6847 | ||
6848 | /* Allocate a segment map big enough to contain | |
6849 | all of the sections we have selected. */ | |
6850 | amt = sizeof (struct elf_segment_map); | |
6851 | if (section_count != 0) | |
6852 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
a50b1753 | 6853 | map = (struct elf_segment_map *) bfd_zalloc (obfd, amt); |
84d1d650 L |
6854 | if (map == NULL) |
6855 | return FALSE; | |
6856 | ||
6857 | /* Initialize the fields of the output segment map with the | |
6858 | input segment. */ | |
6859 | map->next = NULL; | |
6860 | map->p_type = segment->p_type; | |
6861 | map->p_flags = segment->p_flags; | |
6862 | map->p_flags_valid = 1; | |
6863 | map->p_paddr = segment->p_paddr; | |
88967714 | 6864 | map->p_paddr_valid = p_paddr_valid; |
3f570048 AM |
6865 | map->p_align = segment->p_align; |
6866 | map->p_align_valid = 1; | |
3271a814 | 6867 | map->p_vaddr_offset = 0; |
84d1d650 | 6868 | |
04c3a755 NS |
6869 | if (map->p_type == PT_GNU_RELRO |
6870 | || map->p_type == PT_GNU_STACK) | |
b10a8ae0 L |
6871 | { |
6872 | /* The PT_GNU_RELRO segment may contain the first a few | |
6873 | bytes in the .got.plt section even if the whole .got.plt | |
6874 | section isn't in the PT_GNU_RELRO segment. We won't | |
04c3a755 NS |
6875 | change the size of the PT_GNU_RELRO segment. |
6876 | Similarly, PT_GNU_STACK size is significant on uclinux | |
6877 | systems. */ | |
9433b9b1 | 6878 | map->p_size = segment->p_memsz; |
b10a8ae0 L |
6879 | map->p_size_valid = 1; |
6880 | } | |
6881 | ||
84d1d650 L |
6882 | /* Determine if this segment contains the ELF file header |
6883 | and if it contains the program headers themselves. */ | |
6884 | map->includes_filehdr = (segment->p_offset == 0 | |
6885 | && segment->p_filesz >= iehdr->e_ehsize); | |
6886 | ||
6887 | map->includes_phdrs = 0; | |
6888 | if (! phdr_included || segment->p_type != PT_LOAD) | |
6889 | { | |
6890 | map->includes_phdrs = | |
6891 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
6892 | && (segment->p_offset + segment->p_filesz | |
6893 | >= ((bfd_vma) iehdr->e_phoff | |
6894 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
6895 | ||
6896 | if (segment->p_type == PT_LOAD && map->includes_phdrs) | |
6897 | phdr_included = TRUE; | |
6898 | } | |
6899 | ||
bbefd0a9 | 6900 | lowest_section = NULL; |
84d1d650 L |
6901 | if (section_count != 0) |
6902 | { | |
6903 | unsigned int isec = 0; | |
6904 | ||
53020534 | 6905 | for (section = first_section; |
84d1d650 L |
6906 | section != NULL; |
6907 | section = section->next) | |
6908 | { | |
6909 | this_hdr = &(elf_section_data(section)->this_hdr); | |
f4638467 | 6910 | if (ELF_SECTION_IN_SEGMENT (this_hdr, segment)) |
53020534 L |
6911 | { |
6912 | map->sections[isec++] = section->output_section; | |
a76e6f2f AM |
6913 | if ((section->flags & SEC_ALLOC) != 0) |
6914 | { | |
6915 | bfd_vma seg_off; | |
6916 | ||
bbefd0a9 AM |
6917 | if (lowest_section == NULL |
6918 | || section->lma < lowest_section->lma) | |
fb8a5684 AM |
6919 | lowest_section = section; |
6920 | ||
a76e6f2f AM |
6921 | /* Section lmas are set up from PT_LOAD header |
6922 | p_paddr in _bfd_elf_make_section_from_shdr. | |
6923 | If this header has a p_paddr that disagrees | |
6924 | with the section lma, flag the p_paddr as | |
6925 | invalid. */ | |
6926 | if ((section->flags & SEC_LOAD) != 0) | |
6927 | seg_off = this_hdr->sh_offset - segment->p_offset; | |
6928 | else | |
6929 | seg_off = this_hdr->sh_addr - segment->p_vaddr; | |
6930 | if (section->lma - segment->p_paddr != seg_off) | |
6931 | map->p_paddr_valid = FALSE; | |
6932 | } | |
53020534 L |
6933 | if (isec == section_count) |
6934 | break; | |
6935 | } | |
84d1d650 L |
6936 | } |
6937 | } | |
6938 | ||
a76e6f2f AM |
6939 | if (map->includes_filehdr && lowest_section != NULL) |
6940 | /* We need to keep the space used by the headers fixed. */ | |
6941 | map->header_size = lowest_section->vma - segment->p_vaddr; | |
d324f6d6 | 6942 | |
a76e6f2f AM |
6943 | if (!map->includes_phdrs |
6944 | && !map->includes_filehdr | |
6945 | && map->p_paddr_valid) | |
6946 | /* There is some other padding before the first section. */ | |
6947 | map->p_vaddr_offset = ((lowest_section ? lowest_section->lma : 0) | |
6948 | - segment->p_paddr); | |
6949 | ||
84d1d650 L |
6950 | map->count = section_count; |
6951 | *pointer_to_map = map; | |
6952 | pointer_to_map = &map->next; | |
6953 | } | |
6954 | ||
12bd6957 | 6955 | elf_seg_map (obfd) = map_first; |
84d1d650 L |
6956 | return TRUE; |
6957 | } | |
6958 | ||
6959 | /* Copy private BFD data. This copies or rewrites ELF program header | |
6960 | information. */ | |
6961 | ||
6962 | static bfd_boolean | |
6963 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
6964 | { | |
84d1d650 L |
6965 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
6966 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
6967 | return TRUE; | |
6968 | ||
6969 | if (elf_tdata (ibfd)->phdr == NULL) | |
6970 | return TRUE; | |
6971 | ||
6972 | if (ibfd->xvec == obfd->xvec) | |
6973 | { | |
cb3ff1e5 NC |
6974 | /* Check to see if any sections in the input BFD |
6975 | covered by ELF program header have changed. */ | |
d55ce4e2 | 6976 | Elf_Internal_Phdr *segment; |
84d1d650 L |
6977 | asection *section, *osec; |
6978 | unsigned int i, num_segments; | |
6979 | Elf_Internal_Shdr *this_hdr; | |
147d51c2 L |
6980 | const struct elf_backend_data *bed; |
6981 | ||
6982 | bed = get_elf_backend_data (ibfd); | |
6983 | ||
6984 | /* Regenerate the segment map if p_paddr is set to 0. */ | |
6985 | if (bed->want_p_paddr_set_to_zero) | |
6986 | goto rewrite; | |
84d1d650 L |
6987 | |
6988 | /* Initialize the segment mark field. */ | |
6989 | for (section = obfd->sections; section != NULL; | |
6990 | section = section->next) | |
6991 | section->segment_mark = FALSE; | |
6992 | ||
6993 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
6994 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
6995 | i < num_segments; | |
6996 | i++, segment++) | |
6997 | { | |
5f6999aa NC |
6998 | /* PR binutils/3535. The Solaris linker always sets the p_paddr |
6999 | and p_memsz fields of special segments (DYNAMIC, INTERP) to 0 | |
7000 | which severly confuses things, so always regenerate the segment | |
7001 | map in this case. */ | |
7002 | if (segment->p_paddr == 0 | |
7003 | && segment->p_memsz == 0 | |
7004 | && (segment->p_type == PT_INTERP || segment->p_type == PT_DYNAMIC)) | |
cb3ff1e5 | 7005 | goto rewrite; |
5f6999aa | 7006 | |
84d1d650 L |
7007 | for (section = ibfd->sections; |
7008 | section != NULL; section = section->next) | |
7009 | { | |
7010 | /* We mark the output section so that we know it comes | |
7011 | from the input BFD. */ | |
7012 | osec = section->output_section; | |
7013 | if (osec) | |
7014 | osec->segment_mark = TRUE; | |
7015 | ||
7016 | /* Check if this section is covered by the segment. */ | |
7017 | this_hdr = &(elf_section_data(section)->this_hdr); | |
f4638467 | 7018 | if (ELF_SECTION_IN_SEGMENT (this_hdr, segment)) |
84d1d650 L |
7019 | { |
7020 | /* FIXME: Check if its output section is changed or | |
7021 | removed. What else do we need to check? */ | |
7022 | if (osec == NULL | |
7023 | || section->flags != osec->flags | |
7024 | || section->lma != osec->lma | |
7025 | || section->vma != osec->vma | |
7026 | || section->size != osec->size | |
7027 | || section->rawsize != osec->rawsize | |
7028 | || section->alignment_power != osec->alignment_power) | |
7029 | goto rewrite; | |
7030 | } | |
7031 | } | |
7032 | } | |
7033 | ||
cb3ff1e5 | 7034 | /* Check to see if any output section do not come from the |
84d1d650 L |
7035 | input BFD. */ |
7036 | for (section = obfd->sections; section != NULL; | |
7037 | section = section->next) | |
7038 | { | |
7039 | if (section->segment_mark == FALSE) | |
7040 | goto rewrite; | |
7041 | else | |
7042 | section->segment_mark = FALSE; | |
7043 | } | |
7044 | ||
7045 | return copy_elf_program_header (ibfd, obfd); | |
7046 | } | |
7047 | ||
7048 | rewrite: | |
f1d85785 L |
7049 | if (ibfd->xvec == obfd->xvec) |
7050 | { | |
7051 | /* When rewriting program header, set the output maxpagesize to | |
7052 | the maximum alignment of input PT_LOAD segments. */ | |
7053 | Elf_Internal_Phdr *segment; | |
7054 | unsigned int i; | |
7055 | unsigned int num_segments = elf_elfheader (ibfd)->e_phnum; | |
7056 | bfd_vma maxpagesize = 0; | |
7057 | ||
7058 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
7059 | i < num_segments; | |
7060 | i++, segment++) | |
7061 | if (segment->p_type == PT_LOAD | |
7062 | && maxpagesize < segment->p_align) | |
c86934ce NC |
7063 | { |
7064 | /* PR 17512: file: f17299af. */ | |
7065 | if (segment->p_align > (bfd_vma) 1 << ((sizeof (bfd_vma) * 8) - 2)) | |
7066 | (*_bfd_error_handler) (_("\ | |
7067 | %B: warning: segment alignment of 0x%llx is too large"), | |
7068 | ibfd, (long long) segment->p_align); | |
7069 | else | |
7070 | maxpagesize = segment->p_align; | |
7071 | } | |
f1d85785 L |
7072 | |
7073 | if (maxpagesize != get_elf_backend_data (obfd)->maxpagesize) | |
7074 | bfd_emul_set_maxpagesize (bfd_get_target (obfd), maxpagesize); | |
7075 | } | |
7076 | ||
84d1d650 L |
7077 | return rewrite_elf_program_header (ibfd, obfd); |
7078 | } | |
7079 | ||
ccd2ec6a L |
7080 | /* Initialize private output section information from input section. */ |
7081 | ||
7082 | bfd_boolean | |
7083 | _bfd_elf_init_private_section_data (bfd *ibfd, | |
7084 | asection *isec, | |
7085 | bfd *obfd, | |
7086 | asection *osec, | |
7087 | struct bfd_link_info *link_info) | |
7088 | ||
7089 | { | |
7090 | Elf_Internal_Shdr *ihdr, *ohdr; | |
0e1862bb L |
7091 | bfd_boolean final_link = (link_info != NULL |
7092 | && !bfd_link_relocatable (link_info)); | |
ccd2ec6a L |
7093 | |
7094 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
7095 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
7096 | return TRUE; | |
7097 | ||
ba85c43e NC |
7098 | BFD_ASSERT (elf_section_data (osec) != NULL); |
7099 | ||
dfa7b0b8 AM |
7100 | /* For objcopy and relocatable link, don't copy the output ELF |
7101 | section type from input if the output BFD section flags have been | |
7102 | set to something different. For a final link allow some flags | |
7103 | that the linker clears to differ. */ | |
42bb2e33 | 7104 | if (elf_section_type (osec) == SHT_NULL |
dfa7b0b8 AM |
7105 | && (osec->flags == isec->flags |
7106 | || (final_link | |
7107 | && ((osec->flags ^ isec->flags) | |
0814be7d | 7108 | & ~(SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_RELOC)) == 0))) |
42bb2e33 | 7109 | elf_section_type (osec) = elf_section_type (isec); |
d270463e L |
7110 | |
7111 | /* FIXME: Is this correct for all OS/PROC specific flags? */ | |
7112 | elf_section_flags (osec) |= (elf_section_flags (isec) | |
7113 | & (SHF_MASKOS | SHF_MASKPROC)); | |
ccd2ec6a L |
7114 | |
7115 | /* Set things up for objcopy and relocatable link. The output | |
7116 | SHT_GROUP section will have its elf_next_in_group pointing back | |
7117 | to the input group members. Ignore linker created group section. | |
7118 | See elfNN_ia64_object_p in elfxx-ia64.c. */ | |
dfa7b0b8 | 7119 | if (!final_link) |
ccd2ec6a L |
7120 | { |
7121 | if (elf_sec_group (isec) == NULL | |
7122 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
7123 | { | |
7124 | if (elf_section_flags (isec) & SHF_GROUP) | |
7125 | elf_section_flags (osec) |= SHF_GROUP; | |
7126 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
9659de1c | 7127 | elf_section_data (osec)->group = elf_section_data (isec)->group; |
ccd2ec6a | 7128 | } |
68f5ff89 L |
7129 | |
7130 | /* If not decompress, preserve SHF_COMPRESSED. */ | |
7131 | if ((ibfd->flags & BFD_DECOMPRESS) == 0) | |
7132 | elf_section_flags (osec) |= (elf_section_flags (isec) | |
7133 | & SHF_COMPRESSED); | |
ccd2ec6a L |
7134 | } |
7135 | ||
7136 | ihdr = &elf_section_data (isec)->this_hdr; | |
7137 | ||
7138 | /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We | |
7139 | don't use the output section of the linked-to section since it | |
7140 | may be NULL at this point. */ | |
7141 | if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0) | |
7142 | { | |
7143 | ohdr = &elf_section_data (osec)->this_hdr; | |
7144 | ohdr->sh_flags |= SHF_LINK_ORDER; | |
7145 | elf_linked_to_section (osec) = elf_linked_to_section (isec); | |
7146 | } | |
7147 | ||
7148 | osec->use_rela_p = isec->use_rela_p; | |
7149 | ||
7150 | return TRUE; | |
7151 | } | |
7152 | ||
252b5132 RH |
7153 | /* Copy private section information. This copies over the entsize |
7154 | field, and sometimes the info field. */ | |
7155 | ||
b34976b6 | 7156 | bfd_boolean |
217aa764 AM |
7157 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
7158 | asection *isec, | |
7159 | bfd *obfd, | |
7160 | asection *osec) | |
252b5132 RH |
7161 | { |
7162 | Elf_Internal_Shdr *ihdr, *ohdr; | |
7163 | ||
7164 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
7165 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 7166 | return TRUE; |
252b5132 | 7167 | |
252b5132 RH |
7168 | ihdr = &elf_section_data (isec)->this_hdr; |
7169 | ohdr = &elf_section_data (osec)->this_hdr; | |
7170 | ||
7171 | ohdr->sh_entsize = ihdr->sh_entsize; | |
7172 | ||
7173 | if (ihdr->sh_type == SHT_SYMTAB | |
7174 | || ihdr->sh_type == SHT_DYNSYM | |
7175 | || ihdr->sh_type == SHT_GNU_verneed | |
7176 | || ihdr->sh_type == SHT_GNU_verdef) | |
7177 | ohdr->sh_info = ihdr->sh_info; | |
7178 | ||
ccd2ec6a L |
7179 | return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec, |
7180 | NULL); | |
252b5132 RH |
7181 | } |
7182 | ||
d0bf826b AM |
7183 | /* Look at all the SHT_GROUP sections in IBFD, making any adjustments |
7184 | necessary if we are removing either the SHT_GROUP section or any of | |
7185 | the group member sections. DISCARDED is the value that a section's | |
7186 | output_section has if the section will be discarded, NULL when this | |
7187 | function is called from objcopy, bfd_abs_section_ptr when called | |
7188 | from the linker. */ | |
80fccad2 BW |
7189 | |
7190 | bfd_boolean | |
d0bf826b | 7191 | _bfd_elf_fixup_group_sections (bfd *ibfd, asection *discarded) |
80fccad2 | 7192 | { |
30288845 AM |
7193 | asection *isec; |
7194 | ||
30288845 | 7195 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) |
415f38a6 | 7196 | if (elf_section_type (isec) == SHT_GROUP) |
30288845 AM |
7197 | { |
7198 | asection *first = elf_next_in_group (isec); | |
7199 | asection *s = first; | |
d0bf826b AM |
7200 | bfd_size_type removed = 0; |
7201 | ||
30288845 AM |
7202 | while (s != NULL) |
7203 | { | |
415f38a6 AM |
7204 | /* If this member section is being output but the |
7205 | SHT_GROUP section is not, then clear the group info | |
7206 | set up by _bfd_elf_copy_private_section_data. */ | |
d0bf826b AM |
7207 | if (s->output_section != discarded |
7208 | && isec->output_section == discarded) | |
30288845 AM |
7209 | { |
7210 | elf_section_flags (s->output_section) &= ~SHF_GROUP; | |
7211 | elf_group_name (s->output_section) = NULL; | |
7212 | } | |
415f38a6 AM |
7213 | /* Conversely, if the member section is not being output |
7214 | but the SHT_GROUP section is, then adjust its size. */ | |
d0bf826b AM |
7215 | else if (s->output_section == discarded |
7216 | && isec->output_section != discarded) | |
7217 | removed += 4; | |
30288845 AM |
7218 | s = elf_next_in_group (s); |
7219 | if (s == first) | |
7220 | break; | |
7221 | } | |
d0bf826b AM |
7222 | if (removed != 0) |
7223 | { | |
7224 | if (discarded != NULL) | |
7225 | { | |
7226 | /* If we've been called for ld -r, then we need to | |
7227 | adjust the input section size. This function may | |
7228 | be called multiple times, so save the original | |
7229 | size. */ | |
7230 | if (isec->rawsize == 0) | |
7231 | isec->rawsize = isec->size; | |
7232 | isec->size = isec->rawsize - removed; | |
7233 | } | |
7234 | else | |
7235 | { | |
7236 | /* Adjust the output section size when called from | |
7237 | objcopy. */ | |
7238 | isec->output_section->size -= removed; | |
7239 | } | |
7240 | } | |
30288845 AM |
7241 | } |
7242 | ||
80fccad2 BW |
7243 | return TRUE; |
7244 | } | |
7245 | ||
d0bf826b AM |
7246 | /* Copy private header information. */ |
7247 | ||
7248 | bfd_boolean | |
7249 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
7250 | { | |
7251 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
7252 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
7253 | return TRUE; | |
7254 | ||
7255 | /* Copy over private BFD data if it has not already been copied. | |
7256 | This must be done here, rather than in the copy_private_bfd_data | |
7257 | entry point, because the latter is called after the section | |
7258 | contents have been set, which means that the program headers have | |
7259 | already been worked out. */ | |
12bd6957 | 7260 | if (elf_seg_map (obfd) == NULL && elf_tdata (ibfd)->phdr != NULL) |
d0bf826b AM |
7261 | { |
7262 | if (! copy_private_bfd_data (ibfd, obfd)) | |
7263 | return FALSE; | |
7264 | } | |
7265 | ||
7266 | return _bfd_elf_fixup_group_sections (ibfd, NULL); | |
7267 | } | |
7268 | ||
252b5132 RH |
7269 | /* Copy private symbol information. If this symbol is in a section |
7270 | which we did not map into a BFD section, try to map the section | |
7271 | index correctly. We use special macro definitions for the mapped | |
7272 | section indices; these definitions are interpreted by the | |
7273 | swap_out_syms function. */ | |
7274 | ||
9ad5cbcf AM |
7275 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
7276 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
7277 | #define MAP_STRTAB (SHN_HIOS + 3) | |
7278 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
7279 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 7280 | |
b34976b6 | 7281 | bfd_boolean |
217aa764 AM |
7282 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
7283 | asymbol *isymarg, | |
7284 | bfd *obfd, | |
7285 | asymbol *osymarg) | |
252b5132 RH |
7286 | { |
7287 | elf_symbol_type *isym, *osym; | |
7288 | ||
7289 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
7290 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 7291 | return TRUE; |
252b5132 RH |
7292 | |
7293 | isym = elf_symbol_from (ibfd, isymarg); | |
7294 | osym = elf_symbol_from (obfd, osymarg); | |
7295 | ||
7296 | if (isym != NULL | |
8424d8f5 | 7297 | && isym->internal_elf_sym.st_shndx != 0 |
252b5132 RH |
7298 | && osym != NULL |
7299 | && bfd_is_abs_section (isym->symbol.section)) | |
7300 | { | |
7301 | unsigned int shndx; | |
7302 | ||
7303 | shndx = isym->internal_elf_sym.st_shndx; | |
7304 | if (shndx == elf_onesymtab (ibfd)) | |
7305 | shndx = MAP_ONESYMTAB; | |
7306 | else if (shndx == elf_dynsymtab (ibfd)) | |
7307 | shndx = MAP_DYNSYMTAB; | |
12bd6957 | 7308 | else if (shndx == elf_strtab_sec (ibfd)) |
252b5132 | 7309 | shndx = MAP_STRTAB; |
12bd6957 | 7310 | else if (shndx == elf_shstrtab_sec (ibfd)) |
252b5132 | 7311 | shndx = MAP_SHSTRTAB; |
6a40cf0c | 7312 | else if (find_section_in_list (shndx, elf_symtab_shndx_list (ibfd))) |
9ad5cbcf | 7313 | shndx = MAP_SYM_SHNDX; |
252b5132 RH |
7314 | osym->internal_elf_sym.st_shndx = shndx; |
7315 | } | |
7316 | ||
b34976b6 | 7317 | return TRUE; |
252b5132 RH |
7318 | } |
7319 | ||
7320 | /* Swap out the symbols. */ | |
7321 | ||
b34976b6 | 7322 | static bfd_boolean |
217aa764 | 7323 | swap_out_syms (bfd *abfd, |
ef10c3ac | 7324 | struct elf_strtab_hash **sttp, |
217aa764 | 7325 | int relocatable_p) |
252b5132 | 7326 | { |
9c5bfbb7 | 7327 | const struct elf_backend_data *bed; |
079e9a2f AM |
7328 | int symcount; |
7329 | asymbol **syms; | |
ef10c3ac | 7330 | struct elf_strtab_hash *stt; |
079e9a2f | 7331 | Elf_Internal_Shdr *symtab_hdr; |
9ad5cbcf | 7332 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 7333 | Elf_Internal_Shdr *symstrtab_hdr; |
ef10c3ac | 7334 | struct elf_sym_strtab *symstrtab; |
f075ee0c AM |
7335 | bfd_byte *outbound_syms; |
7336 | bfd_byte *outbound_shndx; | |
ef10c3ac L |
7337 | unsigned long outbound_syms_index; |
7338 | unsigned long outbound_shndx_index; | |
079e9a2f | 7339 | int idx; |
12bd6957 | 7340 | unsigned int num_locals; |
079e9a2f | 7341 | bfd_size_type amt; |
174fd7f9 | 7342 | bfd_boolean name_local_sections; |
252b5132 | 7343 | |
12bd6957 | 7344 | if (!elf_map_symbols (abfd, &num_locals)) |
b34976b6 | 7345 | return FALSE; |
252b5132 | 7346 | |
c044fabd | 7347 | /* Dump out the symtabs. */ |
ef10c3ac | 7348 | stt = _bfd_elf_strtab_init (); |
079e9a2f | 7349 | if (stt == NULL) |
b34976b6 | 7350 | return FALSE; |
252b5132 | 7351 | |
079e9a2f AM |
7352 | bed = get_elf_backend_data (abfd); |
7353 | symcount = bfd_get_symcount (abfd); | |
7354 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
7355 | symtab_hdr->sh_type = SHT_SYMTAB; | |
7356 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
7357 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
12bd6957 | 7358 | symtab_hdr->sh_info = num_locals + 1; |
72de5009 | 7359 | symtab_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align; |
079e9a2f AM |
7360 | |
7361 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
7362 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
7363 | ||
ef10c3ac L |
7364 | /* Allocate buffer to swap out the .strtab section. */ |
7365 | symstrtab = (struct elf_sym_strtab *) bfd_malloc ((symcount + 1) | |
7366 | * sizeof (*symstrtab)); | |
7367 | if (symstrtab == NULL) | |
7368 | { | |
7369 | _bfd_elf_strtab_free (stt); | |
7370 | return FALSE; | |
7371 | } | |
7372 | ||
a50b1753 NC |
7373 | outbound_syms = (bfd_byte *) bfd_alloc2 (abfd, 1 + symcount, |
7374 | bed->s->sizeof_sym); | |
079e9a2f | 7375 | if (outbound_syms == NULL) |
5ed6aba4 | 7376 | { |
ef10c3ac L |
7377 | error_return: |
7378 | _bfd_elf_strtab_free (stt); | |
7379 | free (symstrtab); | |
5ed6aba4 NC |
7380 | return FALSE; |
7381 | } | |
217aa764 | 7382 | symtab_hdr->contents = outbound_syms; |
ef10c3ac | 7383 | outbound_syms_index = 0; |
252b5132 | 7384 | |
9ad5cbcf | 7385 | outbound_shndx = NULL; |
ef10c3ac | 7386 | outbound_shndx_index = 0; |
6a40cf0c NC |
7387 | |
7388 | if (elf_symtab_shndx_list (abfd)) | |
9ad5cbcf | 7389 | { |
6a40cf0c NC |
7390 | symtab_shndx_hdr = & elf_symtab_shndx_list (abfd)->hdr; |
7391 | if (symtab_shndx_hdr->sh_name != 0) | |
7392 | { | |
7393 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
7394 | outbound_shndx = (bfd_byte *) | |
7395 | bfd_zalloc2 (abfd, 1 + symcount, sizeof (Elf_External_Sym_Shndx)); | |
7396 | if (outbound_shndx == NULL) | |
7397 | goto error_return; | |
5ed6aba4 | 7398 | |
6a40cf0c NC |
7399 | symtab_shndx_hdr->contents = outbound_shndx; |
7400 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
7401 | symtab_shndx_hdr->sh_size = amt; | |
7402 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
7403 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
7404 | } | |
7405 | /* FIXME: What about any other headers in the list ? */ | |
9ad5cbcf AM |
7406 | } |
7407 | ||
589e6347 | 7408 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
7409 | { |
7410 | /* Fill in zeroth symbol and swap it out. */ | |
7411 | Elf_Internal_Sym sym; | |
7412 | sym.st_name = 0; | |
7413 | sym.st_value = 0; | |
7414 | sym.st_size = 0; | |
7415 | sym.st_info = 0; | |
7416 | sym.st_other = 0; | |
7417 | sym.st_shndx = SHN_UNDEF; | |
35fc36a8 | 7418 | sym.st_target_internal = 0; |
ef10c3ac L |
7419 | symstrtab[0].sym = sym; |
7420 | symstrtab[0].dest_index = outbound_syms_index; | |
7421 | symstrtab[0].destshndx_index = outbound_shndx_index; | |
7422 | outbound_syms_index++; | |
9ad5cbcf | 7423 | if (outbound_shndx != NULL) |
ef10c3ac | 7424 | outbound_shndx_index++; |
079e9a2f | 7425 | } |
252b5132 | 7426 | |
174fd7f9 RS |
7427 | name_local_sections |
7428 | = (bed->elf_backend_name_local_section_symbols | |
7429 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
7430 | ||
079e9a2f | 7431 | syms = bfd_get_outsymbols (abfd); |
ef10c3ac | 7432 | for (idx = 0; idx < symcount;) |
252b5132 | 7433 | { |
252b5132 | 7434 | Elf_Internal_Sym sym; |
079e9a2f AM |
7435 | bfd_vma value = syms[idx]->value; |
7436 | elf_symbol_type *type_ptr; | |
7437 | flagword flags = syms[idx]->flags; | |
7438 | int type; | |
252b5132 | 7439 | |
174fd7f9 RS |
7440 | if (!name_local_sections |
7441 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
7442 | { |
7443 | /* Local section symbols have no name. */ | |
ef10c3ac | 7444 | sym.st_name = (unsigned long) -1; |
079e9a2f AM |
7445 | } |
7446 | else | |
7447 | { | |
ef10c3ac L |
7448 | /* Call _bfd_elf_strtab_offset after _bfd_elf_strtab_finalize |
7449 | to get the final offset for st_name. */ | |
7450 | sym.st_name | |
7451 | = (unsigned long) _bfd_elf_strtab_add (stt, syms[idx]->name, | |
7452 | FALSE); | |
079e9a2f | 7453 | if (sym.st_name == (unsigned long) -1) |
ef10c3ac | 7454 | goto error_return; |
079e9a2f | 7455 | } |
252b5132 | 7456 | |
079e9a2f | 7457 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 7458 | |
079e9a2f AM |
7459 | if ((flags & BSF_SECTION_SYM) == 0 |
7460 | && bfd_is_com_section (syms[idx]->section)) | |
7461 | { | |
7462 | /* ELF common symbols put the alignment into the `value' field, | |
7463 | and the size into the `size' field. This is backwards from | |
7464 | how BFD handles it, so reverse it here. */ | |
7465 | sym.st_size = value; | |
7466 | if (type_ptr == NULL | |
7467 | || type_ptr->internal_elf_sym.st_value == 0) | |
7468 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
7469 | else | |
7470 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
7471 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
7472 | (abfd, syms[idx]->section); | |
7473 | } | |
7474 | else | |
7475 | { | |
7476 | asection *sec = syms[idx]->section; | |
cb33740c | 7477 | unsigned int shndx; |
252b5132 | 7478 | |
079e9a2f AM |
7479 | if (sec->output_section) |
7480 | { | |
7481 | value += sec->output_offset; | |
7482 | sec = sec->output_section; | |
7483 | } | |
589e6347 | 7484 | |
079e9a2f AM |
7485 | /* Don't add in the section vma for relocatable output. */ |
7486 | if (! relocatable_p) | |
7487 | value += sec->vma; | |
7488 | sym.st_value = value; | |
7489 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
7490 | ||
7491 | if (bfd_is_abs_section (sec) | |
7492 | && type_ptr != NULL | |
7493 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
7494 | { | |
7495 | /* This symbol is in a real ELF section which we did | |
7496 | not create as a BFD section. Undo the mapping done | |
7497 | by copy_private_symbol_data. */ | |
7498 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
7499 | switch (shndx) | |
7500 | { | |
7501 | case MAP_ONESYMTAB: | |
7502 | shndx = elf_onesymtab (abfd); | |
7503 | break; | |
7504 | case MAP_DYNSYMTAB: | |
7505 | shndx = elf_dynsymtab (abfd); | |
7506 | break; | |
7507 | case MAP_STRTAB: | |
12bd6957 | 7508 | shndx = elf_strtab_sec (abfd); |
079e9a2f AM |
7509 | break; |
7510 | case MAP_SHSTRTAB: | |
12bd6957 | 7511 | shndx = elf_shstrtab_sec (abfd); |
079e9a2f | 7512 | break; |
9ad5cbcf | 7513 | case MAP_SYM_SHNDX: |
6a40cf0c NC |
7514 | if (elf_symtab_shndx_list (abfd)) |
7515 | shndx = elf_symtab_shndx_list (abfd)->ndx; | |
9ad5cbcf | 7516 | break; |
079e9a2f | 7517 | default: |
15bc576a | 7518 | shndx = SHN_ABS; |
079e9a2f AM |
7519 | break; |
7520 | } | |
7521 | } | |
7522 | else | |
7523 | { | |
7524 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 7525 | |
cb33740c | 7526 | if (shndx == SHN_BAD) |
079e9a2f AM |
7527 | { |
7528 | asection *sec2; | |
7529 | ||
7530 | /* Writing this would be a hell of a lot easier if | |
7531 | we had some decent documentation on bfd, and | |
7532 | knew what to expect of the library, and what to | |
7533 | demand of applications. For example, it | |
7534 | appears that `objcopy' might not set the | |
7535 | section of a symbol to be a section that is | |
7536 | actually in the output file. */ | |
7537 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
7538 | if (sec2 == NULL) |
7539 | { | |
7540 | _bfd_error_handler (_("\ | |
7541 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
7542 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
7543 | sec->name); | |
811072d8 | 7544 | bfd_set_error (bfd_error_invalid_operation); |
ef10c3ac | 7545 | goto error_return; |
589e6347 | 7546 | } |
811072d8 | 7547 | |
079e9a2f | 7548 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
cb33740c | 7549 | BFD_ASSERT (shndx != SHN_BAD); |
079e9a2f AM |
7550 | } |
7551 | } | |
252b5132 | 7552 | |
079e9a2f AM |
7553 | sym.st_shndx = shndx; |
7554 | } | |
252b5132 | 7555 | |
13ae64f3 JJ |
7556 | if ((flags & BSF_THREAD_LOCAL) != 0) |
7557 | type = STT_TLS; | |
d8045f23 NC |
7558 | else if ((flags & BSF_GNU_INDIRECT_FUNCTION) != 0) |
7559 | type = STT_GNU_IFUNC; | |
13ae64f3 | 7560 | else if ((flags & BSF_FUNCTION) != 0) |
079e9a2f AM |
7561 | type = STT_FUNC; |
7562 | else if ((flags & BSF_OBJECT) != 0) | |
7563 | type = STT_OBJECT; | |
d9352518 DB |
7564 | else if ((flags & BSF_RELC) != 0) |
7565 | type = STT_RELC; | |
7566 | else if ((flags & BSF_SRELC) != 0) | |
7567 | type = STT_SRELC; | |
079e9a2f AM |
7568 | else |
7569 | type = STT_NOTYPE; | |
252b5132 | 7570 | |
13ae64f3 JJ |
7571 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
7572 | type = STT_TLS; | |
7573 | ||
589e6347 | 7574 | /* Processor-specific types. */ |
079e9a2f AM |
7575 | if (type_ptr != NULL |
7576 | && bed->elf_backend_get_symbol_type) | |
7577 | type = ((*bed->elf_backend_get_symbol_type) | |
7578 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 7579 | |
079e9a2f AM |
7580 | if (flags & BSF_SECTION_SYM) |
7581 | { | |
7582 | if (flags & BSF_GLOBAL) | |
7583 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
7584 | else | |
7585 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
7586 | } | |
7587 | else if (bfd_is_com_section (syms[idx]->section)) | |
0a40daed | 7588 | { |
b8871f35 L |
7589 | if (type != STT_TLS) |
7590 | { | |
7591 | if ((abfd->flags & BFD_CONVERT_ELF_COMMON)) | |
7592 | type = ((abfd->flags & BFD_USE_ELF_STT_COMMON) | |
7593 | ? STT_COMMON : STT_OBJECT); | |
7594 | else | |
7595 | type = ((flags & BSF_ELF_COMMON) != 0 | |
7596 | ? STT_COMMON : STT_OBJECT); | |
7597 | } | |
7598 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
0a40daed | 7599 | } |
079e9a2f AM |
7600 | else if (bfd_is_und_section (syms[idx]->section)) |
7601 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
7602 | ? STB_WEAK | |
7603 | : STB_GLOBAL), | |
7604 | type); | |
7605 | else if (flags & BSF_FILE) | |
7606 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
7607 | else | |
7608 | { | |
7609 | int bind = STB_LOCAL; | |
252b5132 | 7610 | |
079e9a2f AM |
7611 | if (flags & BSF_LOCAL) |
7612 | bind = STB_LOCAL; | |
3e7a7d11 NC |
7613 | else if (flags & BSF_GNU_UNIQUE) |
7614 | bind = STB_GNU_UNIQUE; | |
079e9a2f AM |
7615 | else if (flags & BSF_WEAK) |
7616 | bind = STB_WEAK; | |
7617 | else if (flags & BSF_GLOBAL) | |
7618 | bind = STB_GLOBAL; | |
252b5132 | 7619 | |
079e9a2f AM |
7620 | sym.st_info = ELF_ST_INFO (bind, type); |
7621 | } | |
252b5132 | 7622 | |
079e9a2f | 7623 | if (type_ptr != NULL) |
35fc36a8 RS |
7624 | { |
7625 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
7626 | sym.st_target_internal | |
7627 | = type_ptr->internal_elf_sym.st_target_internal; | |
7628 | } | |
079e9a2f | 7629 | else |
35fc36a8 RS |
7630 | { |
7631 | sym.st_other = 0; | |
7632 | sym.st_target_internal = 0; | |
7633 | } | |
252b5132 | 7634 | |
ef10c3ac L |
7635 | idx++; |
7636 | symstrtab[idx].sym = sym; | |
7637 | symstrtab[idx].dest_index = outbound_syms_index; | |
7638 | symstrtab[idx].destshndx_index = outbound_shndx_index; | |
7639 | ||
7640 | outbound_syms_index++; | |
9ad5cbcf | 7641 | if (outbound_shndx != NULL) |
ef10c3ac L |
7642 | outbound_shndx_index++; |
7643 | } | |
7644 | ||
7645 | /* Finalize the .strtab section. */ | |
7646 | _bfd_elf_strtab_finalize (stt); | |
7647 | ||
7648 | /* Swap out the .strtab section. */ | |
7649 | for (idx = 0; idx <= symcount; idx++) | |
7650 | { | |
7651 | struct elf_sym_strtab *elfsym = &symstrtab[idx]; | |
7652 | if (elfsym->sym.st_name == (unsigned long) -1) | |
7653 | elfsym->sym.st_name = 0; | |
7654 | else | |
7655 | elfsym->sym.st_name = _bfd_elf_strtab_offset (stt, | |
7656 | elfsym->sym.st_name); | |
7657 | bed->s->swap_symbol_out (abfd, &elfsym->sym, | |
7658 | (outbound_syms | |
7659 | + (elfsym->dest_index | |
7660 | * bed->s->sizeof_sym)), | |
7661 | (outbound_shndx | |
7662 | + (elfsym->destshndx_index | |
7663 | * sizeof (Elf_External_Sym_Shndx)))); | |
079e9a2f | 7664 | } |
ef10c3ac | 7665 | free (symstrtab); |
252b5132 | 7666 | |
079e9a2f | 7667 | *sttp = stt; |
ef10c3ac | 7668 | symstrtab_hdr->sh_size = _bfd_elf_strtab_size (stt); |
079e9a2f | 7669 | symstrtab_hdr->sh_type = SHT_STRTAB; |
84865015 | 7670 | symstrtab_hdr->sh_flags = bed->elf_strtab_flags; |
079e9a2f AM |
7671 | symstrtab_hdr->sh_addr = 0; |
7672 | symstrtab_hdr->sh_entsize = 0; | |
7673 | symstrtab_hdr->sh_link = 0; | |
7674 | symstrtab_hdr->sh_info = 0; | |
7675 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 7676 | |
b34976b6 | 7677 | return TRUE; |
252b5132 RH |
7678 | } |
7679 | ||
7680 | /* Return the number of bytes required to hold the symtab vector. | |
7681 | ||
7682 | Note that we base it on the count plus 1, since we will null terminate | |
7683 | the vector allocated based on this size. However, the ELF symbol table | |
7684 | always has a dummy entry as symbol #0, so it ends up even. */ | |
7685 | ||
7686 | long | |
217aa764 | 7687 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
7688 | { |
7689 | long symcount; | |
7690 | long symtab_size; | |
7691 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
7692 | ||
7693 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
7694 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
7695 | if (symcount > 0) | |
7696 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
7697 | |
7698 | return symtab_size; | |
7699 | } | |
7700 | ||
7701 | long | |
217aa764 | 7702 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
7703 | { |
7704 | long symcount; | |
7705 | long symtab_size; | |
7706 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
7707 | ||
7708 | if (elf_dynsymtab (abfd) == 0) | |
7709 | { | |
7710 | bfd_set_error (bfd_error_invalid_operation); | |
7711 | return -1; | |
7712 | } | |
7713 | ||
7714 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
7715 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
7716 | if (symcount > 0) | |
7717 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
7718 | |
7719 | return symtab_size; | |
7720 | } | |
7721 | ||
7722 | long | |
217aa764 AM |
7723 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
7724 | sec_ptr asect) | |
252b5132 RH |
7725 | { |
7726 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
7727 | } | |
7728 | ||
7729 | /* Canonicalize the relocs. */ | |
7730 | ||
7731 | long | |
217aa764 AM |
7732 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
7733 | sec_ptr section, | |
7734 | arelent **relptr, | |
7735 | asymbol **symbols) | |
252b5132 RH |
7736 | { |
7737 | arelent *tblptr; | |
7738 | unsigned int i; | |
9c5bfbb7 | 7739 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 7740 | |
b34976b6 | 7741 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
7742 | return -1; |
7743 | ||
7744 | tblptr = section->relocation; | |
7745 | for (i = 0; i < section->reloc_count; i++) | |
7746 | *relptr++ = tblptr++; | |
7747 | ||
7748 | *relptr = NULL; | |
7749 | ||
7750 | return section->reloc_count; | |
7751 | } | |
7752 | ||
7753 | long | |
6cee3f79 | 7754 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 7755 | { |
9c5bfbb7 | 7756 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 7757 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
7758 | |
7759 | if (symcount >= 0) | |
7760 | bfd_get_symcount (abfd) = symcount; | |
7761 | return symcount; | |
7762 | } | |
7763 | ||
7764 | long | |
217aa764 AM |
7765 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
7766 | asymbol **allocation) | |
252b5132 | 7767 | { |
9c5bfbb7 | 7768 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 7769 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
7770 | |
7771 | if (symcount >= 0) | |
7772 | bfd_get_dynamic_symcount (abfd) = symcount; | |
7773 | return symcount; | |
252b5132 RH |
7774 | } |
7775 | ||
8615f3f2 AM |
7776 | /* Return the size required for the dynamic reloc entries. Any loadable |
7777 | section that was actually installed in the BFD, and has type SHT_REL | |
7778 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
7779 | dynamic reloc section. */ | |
252b5132 RH |
7780 | |
7781 | long | |
217aa764 | 7782 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
7783 | { |
7784 | long ret; | |
7785 | asection *s; | |
7786 | ||
7787 | if (elf_dynsymtab (abfd) == 0) | |
7788 | { | |
7789 | bfd_set_error (bfd_error_invalid_operation); | |
7790 | return -1; | |
7791 | } | |
7792 | ||
7793 | ret = sizeof (arelent *); | |
7794 | for (s = abfd->sections; s != NULL; s = s->next) | |
266b05cf | 7795 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
252b5132 RH |
7796 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
7797 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 7798 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
7799 | * sizeof (arelent *)); |
7800 | ||
7801 | return ret; | |
7802 | } | |
7803 | ||
8615f3f2 AM |
7804 | /* Canonicalize the dynamic relocation entries. Note that we return the |
7805 | dynamic relocations as a single block, although they are actually | |
7806 | associated with particular sections; the interface, which was | |
7807 | designed for SunOS style shared libraries, expects that there is only | |
7808 | one set of dynamic relocs. Any loadable section that was actually | |
7809 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
7810 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
7811 | |
7812 | long | |
217aa764 AM |
7813 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
7814 | arelent **storage, | |
7815 | asymbol **syms) | |
252b5132 | 7816 | { |
217aa764 | 7817 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
7818 | asection *s; |
7819 | long ret; | |
7820 | ||
7821 | if (elf_dynsymtab (abfd) == 0) | |
7822 | { | |
7823 | bfd_set_error (bfd_error_invalid_operation); | |
7824 | return -1; | |
7825 | } | |
7826 | ||
7827 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
7828 | ret = 0; | |
7829 | for (s = abfd->sections; s != NULL; s = s->next) | |
7830 | { | |
266b05cf | 7831 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
252b5132 RH |
7832 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
7833 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
7834 | { | |
7835 | arelent *p; | |
7836 | long count, i; | |
7837 | ||
b34976b6 | 7838 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 7839 | return -1; |
eea6121a | 7840 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
7841 | p = s->relocation; |
7842 | for (i = 0; i < count; i++) | |
7843 | *storage++ = p++; | |
7844 | ret += count; | |
7845 | } | |
7846 | } | |
7847 | ||
7848 | *storage = NULL; | |
7849 | ||
7850 | return ret; | |
7851 | } | |
7852 | \f | |
7853 | /* Read in the version information. */ | |
7854 | ||
b34976b6 | 7855 | bfd_boolean |
fc0e6df6 | 7856 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
7857 | { |
7858 | bfd_byte *contents = NULL; | |
fc0e6df6 PB |
7859 | unsigned int freeidx = 0; |
7860 | ||
7861 | if (elf_dynverref (abfd) != 0) | |
7862 | { | |
7863 | Elf_Internal_Shdr *hdr; | |
7864 | Elf_External_Verneed *everneed; | |
7865 | Elf_Internal_Verneed *iverneed; | |
7866 | unsigned int i; | |
d0fb9a8d | 7867 | bfd_byte *contents_end; |
fc0e6df6 PB |
7868 | |
7869 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
7870 | ||
601a03ba | 7871 | if (hdr->sh_info == 0 || hdr->sh_size < sizeof (Elf_External_Verneed)) |
d0fb9a8d | 7872 | { |
601a03ba AM |
7873 | error_return_bad_verref: |
7874 | (*_bfd_error_handler) | |
7875 | (_("%B: .gnu.version_r invalid entry"), abfd); | |
7876 | bfd_set_error (bfd_error_bad_value); | |
d0fb9a8d JJ |
7877 | error_return_verref: |
7878 | elf_tdata (abfd)->verref = NULL; | |
7879 | elf_tdata (abfd)->cverrefs = 0; | |
7880 | goto error_return; | |
7881 | } | |
601a03ba AM |
7882 | |
7883 | contents = (bfd_byte *) bfd_malloc (hdr->sh_size); | |
7884 | if (contents == NULL) | |
7885 | goto error_return_verref; | |
7886 | ||
fc0e6df6 PB |
7887 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
7888 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
d0fb9a8d | 7889 | goto error_return_verref; |
fc0e6df6 | 7890 | |
601a03ba AM |
7891 | elf_tdata (abfd)->verref = (Elf_Internal_Verneed *) |
7892 | bfd_zalloc2 (abfd, hdr->sh_info, sizeof (Elf_Internal_Verneed)); | |
7893 | ||
7894 | if (elf_tdata (abfd)->verref == NULL) | |
d0fb9a8d JJ |
7895 | goto error_return_verref; |
7896 | ||
7897 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
7898 | == sizeof (Elf_External_Vernaux)); | |
7899 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
7900 | everneed = (Elf_External_Verneed *) contents; |
7901 | iverneed = elf_tdata (abfd)->verref; | |
7902 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
7903 | { | |
7904 | Elf_External_Vernaux *evernaux; | |
7905 | Elf_Internal_Vernaux *ivernaux; | |
7906 | unsigned int j; | |
7907 | ||
7908 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
7909 | ||
7910 | iverneed->vn_bfd = abfd; | |
7911 | ||
7912 | iverneed->vn_filename = | |
7913 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
7914 | iverneed->vn_file); | |
7915 | if (iverneed->vn_filename == NULL) | |
601a03ba | 7916 | goto error_return_bad_verref; |
fc0e6df6 | 7917 | |
d0fb9a8d JJ |
7918 | if (iverneed->vn_cnt == 0) |
7919 | iverneed->vn_auxptr = NULL; | |
7920 | else | |
7921 | { | |
a50b1753 NC |
7922 | iverneed->vn_auxptr = (struct elf_internal_vernaux *) |
7923 | bfd_alloc2 (abfd, iverneed->vn_cnt, | |
7924 | sizeof (Elf_Internal_Vernaux)); | |
d0fb9a8d JJ |
7925 | if (iverneed->vn_auxptr == NULL) |
7926 | goto error_return_verref; | |
7927 | } | |
7928 | ||
7929 | if (iverneed->vn_aux | |
7930 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
601a03ba | 7931 | goto error_return_bad_verref; |
fc0e6df6 PB |
7932 | |
7933 | evernaux = ((Elf_External_Vernaux *) | |
7934 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
7935 | ivernaux = iverneed->vn_auxptr; | |
7936 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
7937 | { | |
7938 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
7939 | ||
7940 | ivernaux->vna_nodename = | |
7941 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
7942 | ivernaux->vna_name); | |
7943 | if (ivernaux->vna_nodename == NULL) | |
601a03ba | 7944 | goto error_return_bad_verref; |
fc0e6df6 | 7945 | |
25ff461f AM |
7946 | if (ivernaux->vna_other > freeidx) |
7947 | freeidx = ivernaux->vna_other; | |
7948 | ||
7949 | ivernaux->vna_nextptr = NULL; | |
7950 | if (ivernaux->vna_next == 0) | |
7951 | { | |
7952 | iverneed->vn_cnt = j + 1; | |
7953 | break; | |
7954 | } | |
fc0e6df6 PB |
7955 | if (j + 1 < iverneed->vn_cnt) |
7956 | ivernaux->vna_nextptr = ivernaux + 1; | |
fc0e6df6 | 7957 | |
d0fb9a8d JJ |
7958 | if (ivernaux->vna_next |
7959 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
601a03ba | 7960 | goto error_return_bad_verref; |
d0fb9a8d | 7961 | |
fc0e6df6 PB |
7962 | evernaux = ((Elf_External_Vernaux *) |
7963 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
fc0e6df6 PB |
7964 | } |
7965 | ||
25ff461f AM |
7966 | iverneed->vn_nextref = NULL; |
7967 | if (iverneed->vn_next == 0) | |
7968 | break; | |
fc0e6df6 PB |
7969 | if (i + 1 < hdr->sh_info) |
7970 | iverneed->vn_nextref = iverneed + 1; | |
fc0e6df6 | 7971 | |
d0fb9a8d JJ |
7972 | if (iverneed->vn_next |
7973 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
601a03ba | 7974 | goto error_return_bad_verref; |
d0fb9a8d | 7975 | |
fc0e6df6 PB |
7976 | everneed = ((Elf_External_Verneed *) |
7977 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
7978 | } | |
25ff461f | 7979 | elf_tdata (abfd)->cverrefs = i; |
fc0e6df6 PB |
7980 | |
7981 | free (contents); | |
7982 | contents = NULL; | |
7983 | } | |
252b5132 RH |
7984 | |
7985 | if (elf_dynverdef (abfd) != 0) | |
7986 | { | |
7987 | Elf_Internal_Shdr *hdr; | |
7988 | Elf_External_Verdef *everdef; | |
7989 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
7990 | Elf_Internal_Verdef *iverdefarr; |
7991 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 7992 | unsigned int i; |
062e2358 | 7993 | unsigned int maxidx; |
d0fb9a8d | 7994 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
7995 | |
7996 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
7997 | ||
601a03ba AM |
7998 | if (hdr->sh_info == 0 || hdr->sh_size < sizeof (Elf_External_Verdef)) |
7999 | { | |
8000 | error_return_bad_verdef: | |
8001 | (*_bfd_error_handler) | |
8002 | (_("%B: .gnu.version_d invalid entry"), abfd); | |
8003 | bfd_set_error (bfd_error_bad_value); | |
8004 | error_return_verdef: | |
8005 | elf_tdata (abfd)->verdef = NULL; | |
8006 | elf_tdata (abfd)->cverdefs = 0; | |
8007 | goto error_return; | |
8008 | } | |
8009 | ||
a50b1753 | 8010 | contents = (bfd_byte *) bfd_malloc (hdr->sh_size); |
252b5132 | 8011 | if (contents == NULL) |
601a03ba | 8012 | goto error_return_verdef; |
252b5132 | 8013 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
217aa764 | 8014 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
601a03ba | 8015 | goto error_return_verdef; |
d0fb9a8d JJ |
8016 | |
8017 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
8018 | >= sizeof (Elf_External_Verdaux)); | |
8019 | contents_end_def = contents + hdr->sh_size | |
8020 | - sizeof (Elf_External_Verdef); | |
8021 | contents_end_aux = contents + hdr->sh_size | |
8022 | - sizeof (Elf_External_Verdaux); | |
8023 | ||
f631889e UD |
8024 | /* We know the number of entries in the section but not the maximum |
8025 | index. Therefore we have to run through all entries and find | |
8026 | the maximum. */ | |
252b5132 | 8027 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
8028 | maxidx = 0; |
8029 | for (i = 0; i < hdr->sh_info; ++i) | |
8030 | { | |
8031 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
8032 | ||
601a03ba AM |
8033 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) == 0) |
8034 | goto error_return_bad_verdef; | |
062e2358 AM |
8035 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
8036 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 8037 | |
25ff461f AM |
8038 | if (iverdefmem.vd_next == 0) |
8039 | break; | |
8040 | ||
d0fb9a8d JJ |
8041 | if (iverdefmem.vd_next |
8042 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
601a03ba | 8043 | goto error_return_bad_verdef; |
d0fb9a8d | 8044 | |
f631889e UD |
8045 | everdef = ((Elf_External_Verdef *) |
8046 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
8047 | } | |
8048 | ||
fc0e6df6 PB |
8049 | if (default_imported_symver) |
8050 | { | |
8051 | if (freeidx > maxidx) | |
8052 | maxidx = ++freeidx; | |
8053 | else | |
8054 | freeidx = ++maxidx; | |
8055 | } | |
201159ec | 8056 | |
601a03ba AM |
8057 | elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) |
8058 | bfd_zalloc2 (abfd, maxidx, sizeof (Elf_Internal_Verdef)); | |
f631889e | 8059 | if (elf_tdata (abfd)->verdef == NULL) |
601a03ba | 8060 | goto error_return_verdef; |
f631889e UD |
8061 | |
8062 | elf_tdata (abfd)->cverdefs = maxidx; | |
8063 | ||
8064 | everdef = (Elf_External_Verdef *) contents; | |
8065 | iverdefarr = elf_tdata (abfd)->verdef; | |
8066 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
8067 | { |
8068 | Elf_External_Verdaux *everdaux; | |
8069 | Elf_Internal_Verdaux *iverdaux; | |
8070 | unsigned int j; | |
8071 | ||
f631889e UD |
8072 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
8073 | ||
d0fb9a8d | 8074 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
601a03ba | 8075 | goto error_return_bad_verdef; |
d0fb9a8d | 8076 | |
f631889e | 8077 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
595bce75 | 8078 | memcpy (iverdef, &iverdefmem, offsetof (Elf_Internal_Verdef, vd_bfd)); |
252b5132 RH |
8079 | |
8080 | iverdef->vd_bfd = abfd; | |
8081 | ||
d0fb9a8d JJ |
8082 | if (iverdef->vd_cnt == 0) |
8083 | iverdef->vd_auxptr = NULL; | |
8084 | else | |
8085 | { | |
a50b1753 NC |
8086 | iverdef->vd_auxptr = (struct elf_internal_verdaux *) |
8087 | bfd_alloc2 (abfd, iverdef->vd_cnt, | |
8088 | sizeof (Elf_Internal_Verdaux)); | |
d0fb9a8d JJ |
8089 | if (iverdef->vd_auxptr == NULL) |
8090 | goto error_return_verdef; | |
8091 | } | |
8092 | ||
8093 | if (iverdef->vd_aux | |
8094 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
601a03ba | 8095 | goto error_return_bad_verdef; |
252b5132 RH |
8096 | |
8097 | everdaux = ((Elf_External_Verdaux *) | |
8098 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
8099 | iverdaux = iverdef->vd_auxptr; | |
8100 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
8101 | { | |
8102 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
8103 | ||
8104 | iverdaux->vda_nodename = | |
8105 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
8106 | iverdaux->vda_name); | |
8107 | if (iverdaux->vda_nodename == NULL) | |
601a03ba | 8108 | goto error_return_bad_verdef; |
252b5132 | 8109 | |
25ff461f AM |
8110 | iverdaux->vda_nextptr = NULL; |
8111 | if (iverdaux->vda_next == 0) | |
8112 | { | |
8113 | iverdef->vd_cnt = j + 1; | |
8114 | break; | |
8115 | } | |
252b5132 RH |
8116 | if (j + 1 < iverdef->vd_cnt) |
8117 | iverdaux->vda_nextptr = iverdaux + 1; | |
252b5132 | 8118 | |
d0fb9a8d JJ |
8119 | if (iverdaux->vda_next |
8120 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
601a03ba | 8121 | goto error_return_bad_verdef; |
d0fb9a8d | 8122 | |
252b5132 RH |
8123 | everdaux = ((Elf_External_Verdaux *) |
8124 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
8125 | } | |
8126 | ||
595bce75 | 8127 | iverdef->vd_nodename = NULL; |
d0fb9a8d JJ |
8128 | if (iverdef->vd_cnt) |
8129 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 8130 | |
25ff461f AM |
8131 | iverdef->vd_nextdef = NULL; |
8132 | if (iverdef->vd_next == 0) | |
8133 | break; | |
d0fb9a8d | 8134 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 | 8135 | iverdef->vd_nextdef = iverdef + 1; |
252b5132 RH |
8136 | |
8137 | everdef = ((Elf_External_Verdef *) | |
8138 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
8139 | } | |
8140 | ||
8141 | free (contents); | |
8142 | contents = NULL; | |
8143 | } | |
fc0e6df6 | 8144 | else if (default_imported_symver) |
252b5132 | 8145 | { |
fc0e6df6 PB |
8146 | if (freeidx < 3) |
8147 | freeidx = 3; | |
8148 | else | |
8149 | freeidx++; | |
252b5132 | 8150 | |
a50b1753 NC |
8151 | elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) |
8152 | bfd_zalloc2 (abfd, freeidx, sizeof (Elf_Internal_Verdef)); | |
fc0e6df6 | 8153 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
8154 | goto error_return; |
8155 | ||
fc0e6df6 PB |
8156 | elf_tdata (abfd)->cverdefs = freeidx; |
8157 | } | |
252b5132 | 8158 | |
fc0e6df6 PB |
8159 | /* Create a default version based on the soname. */ |
8160 | if (default_imported_symver) | |
8161 | { | |
8162 | Elf_Internal_Verdef *iverdef; | |
8163 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 8164 | |
5bb3703f | 8165 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1]; |
252b5132 | 8166 | |
fc0e6df6 PB |
8167 | iverdef->vd_version = VER_DEF_CURRENT; |
8168 | iverdef->vd_flags = 0; | |
8169 | iverdef->vd_ndx = freeidx; | |
8170 | iverdef->vd_cnt = 1; | |
252b5132 | 8171 | |
fc0e6df6 | 8172 | iverdef->vd_bfd = abfd; |
252b5132 | 8173 | |
fc0e6df6 PB |
8174 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
8175 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 8176 | goto error_return_verdef; |
fc0e6df6 | 8177 | iverdef->vd_nextdef = NULL; |
601a03ba AM |
8178 | iverdef->vd_auxptr = ((struct elf_internal_verdaux *) |
8179 | bfd_zalloc (abfd, sizeof (Elf_Internal_Verdaux))); | |
d0fb9a8d JJ |
8180 | if (iverdef->vd_auxptr == NULL) |
8181 | goto error_return_verdef; | |
252b5132 | 8182 | |
fc0e6df6 PB |
8183 | iverdaux = iverdef->vd_auxptr; |
8184 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
252b5132 RH |
8185 | } |
8186 | ||
b34976b6 | 8187 | return TRUE; |
252b5132 RH |
8188 | |
8189 | error_return: | |
5ed6aba4 | 8190 | if (contents != NULL) |
252b5132 | 8191 | free (contents); |
b34976b6 | 8192 | return FALSE; |
252b5132 RH |
8193 | } |
8194 | \f | |
8195 | asymbol * | |
217aa764 | 8196 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
8197 | { |
8198 | elf_symbol_type *newsym; | |
8199 | ||
201159ec | 8200 | newsym = (elf_symbol_type *) bfd_zalloc (abfd, sizeof * newsym); |
252b5132 RH |
8201 | if (!newsym) |
8202 | return NULL; | |
201159ec NC |
8203 | newsym->symbol.the_bfd = abfd; |
8204 | return &newsym->symbol; | |
252b5132 RH |
8205 | } |
8206 | ||
8207 | void | |
217aa764 AM |
8208 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
8209 | asymbol *symbol, | |
8210 | symbol_info *ret) | |
252b5132 RH |
8211 | { |
8212 | bfd_symbol_info (symbol, ret); | |
8213 | } | |
8214 | ||
8215 | /* Return whether a symbol name implies a local symbol. Most targets | |
8216 | use this function for the is_local_label_name entry point, but some | |
8217 | override it. */ | |
8218 | ||
b34976b6 | 8219 | bfd_boolean |
217aa764 AM |
8220 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
8221 | const char *name) | |
252b5132 RH |
8222 | { |
8223 | /* Normal local symbols start with ``.L''. */ | |
8224 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 8225 | return TRUE; |
252b5132 RH |
8226 | |
8227 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
8228 | DWARF debugging symbols starting with ``..''. */ | |
8229 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 8230 | return TRUE; |
252b5132 RH |
8231 | |
8232 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
8233 | emitting DWARF debugging output. I suspect this is actually a | |
8234 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
8235 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
8236 | underscore to be emitted on some ELF targets). For ease of use, | |
8237 | we treat such symbols as local. */ | |
8238 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 8239 | return TRUE; |
252b5132 | 8240 | |
b1fa9dd6 NC |
8241 | /* Treat assembler generated fake symbols, dollar local labels and |
8242 | forward-backward labels (aka local labels) as locals. | |
8243 | These labels have the form: | |
8244 | ||
8245 | L0^A.* (fake symbols) | |
8246 | ||
8247 | [.]?L[0123456789]+{^A|^B}[0123456789]* (local labels) | |
8248 | ||
8249 | Versions which start with .L will have already been matched above, | |
8250 | so we only need to match the rest. */ | |
8251 | if (name[0] == 'L' && ISDIGIT (name[1])) | |
8252 | { | |
8253 | bfd_boolean ret = FALSE; | |
8254 | const char * p; | |
8255 | char c; | |
8256 | ||
8257 | for (p = name + 2; (c = *p); p++) | |
8258 | { | |
8259 | if (c == 1 || c == 2) | |
8260 | { | |
8261 | if (c == 1 && p == name + 2) | |
8262 | /* A fake symbol. */ | |
8263 | return TRUE; | |
8264 | ||
8265 | /* FIXME: We are being paranoid here and treating symbols like | |
8266 | L0^Bfoo as if there were non-local, on the grounds that the | |
8267 | assembler will never generate them. But can any symbol | |
8268 | containing an ASCII value in the range 1-31 ever be anything | |
8269 | other than some kind of local ? */ | |
8270 | ret = TRUE; | |
8271 | } | |
8272 | ||
8273 | if (! ISDIGIT (c)) | |
8274 | { | |
8275 | ret = FALSE; | |
8276 | break; | |
8277 | } | |
8278 | } | |
8279 | return ret; | |
8280 | } | |
ffa54770 | 8281 | |
b34976b6 | 8282 | return FALSE; |
252b5132 RH |
8283 | } |
8284 | ||
8285 | alent * | |
217aa764 AM |
8286 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
8287 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
8288 | { |
8289 | abort (); | |
8290 | return NULL; | |
8291 | } | |
8292 | ||
b34976b6 | 8293 | bfd_boolean |
217aa764 AM |
8294 | _bfd_elf_set_arch_mach (bfd *abfd, |
8295 | enum bfd_architecture arch, | |
8296 | unsigned long machine) | |
252b5132 RH |
8297 | { |
8298 | /* If this isn't the right architecture for this backend, and this | |
8299 | isn't the generic backend, fail. */ | |
8300 | if (arch != get_elf_backend_data (abfd)->arch | |
8301 | && arch != bfd_arch_unknown | |
8302 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 8303 | return FALSE; |
252b5132 RH |
8304 | |
8305 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
8306 | } | |
8307 | ||
d1fad7c6 NC |
8308 | /* Find the nearest line to a particular section and offset, |
8309 | for error reporting. */ | |
8310 | ||
b34976b6 | 8311 | bfd_boolean |
217aa764 | 8312 | _bfd_elf_find_nearest_line (bfd *abfd, |
217aa764 | 8313 | asymbol **symbols, |
fb167eb2 | 8314 | asection *section, |
217aa764 AM |
8315 | bfd_vma offset, |
8316 | const char **filename_ptr, | |
8317 | const char **functionname_ptr, | |
fb167eb2 AM |
8318 | unsigned int *line_ptr, |
8319 | unsigned int *discriminator_ptr) | |
d1fad7c6 | 8320 | { |
b34976b6 | 8321 | bfd_boolean found; |
d1fad7c6 | 8322 | |
fb167eb2 | 8323 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
4e8a9624 | 8324 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
8325 | line_ptr, discriminator_ptr, |
8326 | dwarf_debug_sections, 0, | |
e00e8198 AM |
8327 | &elf_tdata (abfd)->dwarf2_find_line_info) |
8328 | || _bfd_dwarf1_find_nearest_line (abfd, symbols, section, offset, | |
8329 | filename_ptr, functionname_ptr, | |
8330 | line_ptr)) | |
d1fad7c6 NC |
8331 | { |
8332 | if (!*functionname_ptr) | |
e00e8198 AM |
8333 | _bfd_elf_find_function (abfd, symbols, section, offset, |
8334 | *filename_ptr ? NULL : filename_ptr, | |
8335 | functionname_ptr); | |
b34976b6 | 8336 | return TRUE; |
d1fad7c6 NC |
8337 | } |
8338 | ||
8339 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
8340 | &found, filename_ptr, |
8341 | functionname_ptr, line_ptr, | |
8342 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 8343 | return FALSE; |
dc43ada5 | 8344 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 8345 | return TRUE; |
d1fad7c6 NC |
8346 | |
8347 | if (symbols == NULL) | |
b34976b6 | 8348 | return FALSE; |
d1fad7c6 | 8349 | |
e00e8198 AM |
8350 | if (! _bfd_elf_find_function (abfd, symbols, section, offset, |
8351 | filename_ptr, functionname_ptr)) | |
b34976b6 | 8352 | return FALSE; |
d1fad7c6 | 8353 | |
252b5132 | 8354 | *line_ptr = 0; |
b34976b6 | 8355 | return TRUE; |
252b5132 RH |
8356 | } |
8357 | ||
5420f73d L |
8358 | /* Find the line for a symbol. */ |
8359 | ||
8360 | bfd_boolean | |
8361 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, | |
8362 | const char **filename_ptr, unsigned int *line_ptr) | |
9b8d1a36 | 8363 | { |
fb167eb2 AM |
8364 | return _bfd_dwarf2_find_nearest_line (abfd, symbols, symbol, NULL, 0, |
8365 | filename_ptr, NULL, line_ptr, NULL, | |
8366 | dwarf_debug_sections, 0, | |
8367 | &elf_tdata (abfd)->dwarf2_find_line_info); | |
5420f73d L |
8368 | } |
8369 | ||
4ab527b0 FF |
8370 | /* After a call to bfd_find_nearest_line, successive calls to |
8371 | bfd_find_inliner_info can be used to get source information about | |
8372 | each level of function inlining that terminated at the address | |
8373 | passed to bfd_find_nearest_line. Currently this is only supported | |
8374 | for DWARF2 with appropriate DWARF3 extensions. */ | |
8375 | ||
8376 | bfd_boolean | |
8377 | _bfd_elf_find_inliner_info (bfd *abfd, | |
8378 | const char **filename_ptr, | |
8379 | const char **functionname_ptr, | |
8380 | unsigned int *line_ptr) | |
8381 | { | |
8382 | bfd_boolean found; | |
8383 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
8384 | functionname_ptr, line_ptr, | |
8385 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
8386 | return found; | |
8387 | } | |
8388 | ||
252b5132 | 8389 | int |
a6b96beb | 8390 | _bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 8391 | { |
8ded5a0f AM |
8392 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
8393 | int ret = bed->s->sizeof_ehdr; | |
252b5132 | 8394 | |
0e1862bb | 8395 | if (!bfd_link_relocatable (info)) |
8ded5a0f | 8396 | { |
12bd6957 | 8397 | bfd_size_type phdr_size = elf_program_header_size (abfd); |
8ded5a0f | 8398 | |
62d7a5f6 AM |
8399 | if (phdr_size == (bfd_size_type) -1) |
8400 | { | |
8401 | struct elf_segment_map *m; | |
8402 | ||
8403 | phdr_size = 0; | |
12bd6957 | 8404 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
62d7a5f6 | 8405 | phdr_size += bed->s->sizeof_phdr; |
8ded5a0f | 8406 | |
62d7a5f6 AM |
8407 | if (phdr_size == 0) |
8408 | phdr_size = get_program_header_size (abfd, info); | |
8409 | } | |
8ded5a0f | 8410 | |
12bd6957 | 8411 | elf_program_header_size (abfd) = phdr_size; |
8ded5a0f AM |
8412 | ret += phdr_size; |
8413 | } | |
8414 | ||
252b5132 RH |
8415 | return ret; |
8416 | } | |
8417 | ||
b34976b6 | 8418 | bfd_boolean |
217aa764 AM |
8419 | _bfd_elf_set_section_contents (bfd *abfd, |
8420 | sec_ptr section, | |
0f867abe | 8421 | const void *location, |
217aa764 AM |
8422 | file_ptr offset, |
8423 | bfd_size_type count) | |
252b5132 RH |
8424 | { |
8425 | Elf_Internal_Shdr *hdr; | |
1b6aeedb | 8426 | file_ptr pos; |
252b5132 RH |
8427 | |
8428 | if (! abfd->output_has_begun | |
217aa764 | 8429 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 8430 | return FALSE; |
252b5132 | 8431 | |
0ce398f1 L |
8432 | if (!count) |
8433 | return TRUE; | |
8434 | ||
252b5132 | 8435 | hdr = &elf_section_data (section)->this_hdr; |
0ce398f1 L |
8436 | if (hdr->sh_offset == (file_ptr) -1) |
8437 | { | |
8438 | /* We must compress this section. Write output to the buffer. */ | |
8439 | unsigned char *contents = hdr->contents; | |
8440 | if ((offset + count) > hdr->sh_size | |
8441 | || (section->flags & SEC_ELF_COMPRESS) == 0 | |
8442 | || contents == NULL) | |
8443 | abort (); | |
8444 | memcpy (contents + offset, location, count); | |
8445 | return TRUE; | |
8446 | } | |
dc810e39 AM |
8447 | pos = hdr->sh_offset + offset; |
8448 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
8449 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 8450 | return FALSE; |
252b5132 | 8451 | |
b34976b6 | 8452 | return TRUE; |
252b5132 RH |
8453 | } |
8454 | ||
8455 | void | |
217aa764 AM |
8456 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
8457 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
8458 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
8459 | { |
8460 | abort (); | |
8461 | } | |
8462 | ||
252b5132 RH |
8463 | /* Try to convert a non-ELF reloc into an ELF one. */ |
8464 | ||
b34976b6 | 8465 | bfd_boolean |
217aa764 | 8466 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 8467 | { |
c044fabd | 8468 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
8469 | |
8470 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
8471 | { | |
8472 | bfd_reloc_code_real_type code; | |
8473 | reloc_howto_type *howto; | |
8474 | ||
8475 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 8476 | equivalent ELF reloc. */ |
252b5132 RH |
8477 | |
8478 | if (areloc->howto->pc_relative) | |
8479 | { | |
8480 | switch (areloc->howto->bitsize) | |
8481 | { | |
8482 | case 8: | |
8483 | code = BFD_RELOC_8_PCREL; | |
8484 | break; | |
8485 | case 12: | |
8486 | code = BFD_RELOC_12_PCREL; | |
8487 | break; | |
8488 | case 16: | |
8489 | code = BFD_RELOC_16_PCREL; | |
8490 | break; | |
8491 | case 24: | |
8492 | code = BFD_RELOC_24_PCREL; | |
8493 | break; | |
8494 | case 32: | |
8495 | code = BFD_RELOC_32_PCREL; | |
8496 | break; | |
8497 | case 64: | |
8498 | code = BFD_RELOC_64_PCREL; | |
8499 | break; | |
8500 | default: | |
8501 | goto fail; | |
8502 | } | |
8503 | ||
8504 | howto = bfd_reloc_type_lookup (abfd, code); | |
8505 | ||
8506 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
8507 | { | |
8508 | if (howto->pcrel_offset) | |
8509 | areloc->addend += areloc->address; | |
8510 | else | |
8511 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
8512 | } | |
8513 | } | |
8514 | else | |
8515 | { | |
8516 | switch (areloc->howto->bitsize) | |
8517 | { | |
8518 | case 8: | |
8519 | code = BFD_RELOC_8; | |
8520 | break; | |
8521 | case 14: | |
8522 | code = BFD_RELOC_14; | |
8523 | break; | |
8524 | case 16: | |
8525 | code = BFD_RELOC_16; | |
8526 | break; | |
8527 | case 26: | |
8528 | code = BFD_RELOC_26; | |
8529 | break; | |
8530 | case 32: | |
8531 | code = BFD_RELOC_32; | |
8532 | break; | |
8533 | case 64: | |
8534 | code = BFD_RELOC_64; | |
8535 | break; | |
8536 | default: | |
8537 | goto fail; | |
8538 | } | |
8539 | ||
8540 | howto = bfd_reloc_type_lookup (abfd, code); | |
8541 | } | |
8542 | ||
8543 | if (howto) | |
8544 | areloc->howto = howto; | |
8545 | else | |
8546 | goto fail; | |
8547 | } | |
8548 | ||
b34976b6 | 8549 | return TRUE; |
252b5132 RH |
8550 | |
8551 | fail: | |
8552 | (*_bfd_error_handler) | |
d003868e AM |
8553 | (_("%B: unsupported relocation type %s"), |
8554 | abfd, areloc->howto->name); | |
252b5132 | 8555 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 8556 | return FALSE; |
252b5132 RH |
8557 | } |
8558 | ||
b34976b6 | 8559 | bfd_boolean |
217aa764 | 8560 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 | 8561 | { |
d9071b0c TG |
8562 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
8563 | if (bfd_get_format (abfd) == bfd_object && tdata != NULL) | |
252b5132 | 8564 | { |
c0355132 | 8565 | if (elf_tdata (abfd)->o != NULL && elf_shstrtab (abfd) != NULL) |
2b0f7ef9 | 8566 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
d9071b0c | 8567 | _bfd_dwarf2_cleanup_debug_info (abfd, &tdata->dwarf2_find_line_info); |
252b5132 RH |
8568 | } |
8569 | ||
8570 | return _bfd_generic_close_and_cleanup (abfd); | |
8571 | } | |
8572 | ||
8573 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
8574 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
8575 | range-checking to interfere. There is nothing else to do in processing | |
8576 | this reloc. */ | |
8577 | ||
8578 | bfd_reloc_status_type | |
217aa764 AM |
8579 | _bfd_elf_rel_vtable_reloc_fn |
8580 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 8581 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
8582 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
8583 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
8584 | { |
8585 | return bfd_reloc_ok; | |
8586 | } | |
252b5132 RH |
8587 | \f |
8588 | /* Elf core file support. Much of this only works on native | |
8589 | toolchains, since we rely on knowing the | |
8590 | machine-dependent procfs structure in order to pick | |
c044fabd | 8591 | out details about the corefile. */ |
252b5132 RH |
8592 | |
8593 | #ifdef HAVE_SYS_PROCFS_H | |
16231b7b DG |
8594 | /* Needed for new procfs interface on sparc-solaris. */ |
8595 | # define _STRUCTURED_PROC 1 | |
252b5132 RH |
8596 | # include <sys/procfs.h> |
8597 | #endif | |
8598 | ||
261b8d08 PA |
8599 | /* Return a PID that identifies a "thread" for threaded cores, or the |
8600 | PID of the main process for non-threaded cores. */ | |
252b5132 RH |
8601 | |
8602 | static int | |
217aa764 | 8603 | elfcore_make_pid (bfd *abfd) |
252b5132 | 8604 | { |
261b8d08 PA |
8605 | int pid; |
8606 | ||
228e534f | 8607 | pid = elf_tdata (abfd)->core->lwpid; |
261b8d08 | 8608 | if (pid == 0) |
228e534f | 8609 | pid = elf_tdata (abfd)->core->pid; |
261b8d08 PA |
8610 | |
8611 | return pid; | |
252b5132 RH |
8612 | } |
8613 | ||
252b5132 RH |
8614 | /* If there isn't a section called NAME, make one, using |
8615 | data from SECT. Note, this function will generate a | |
8616 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 8617 | overwrite it. */ |
252b5132 | 8618 | |
b34976b6 | 8619 | static bfd_boolean |
217aa764 | 8620 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 8621 | { |
c044fabd | 8622 | asection *sect2; |
252b5132 RH |
8623 | |
8624 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 8625 | return TRUE; |
252b5132 | 8626 | |
117ed4f8 | 8627 | sect2 = bfd_make_section_with_flags (abfd, name, sect->flags); |
252b5132 | 8628 | if (sect2 == NULL) |
b34976b6 | 8629 | return FALSE; |
252b5132 | 8630 | |
eea6121a | 8631 | sect2->size = sect->size; |
252b5132 | 8632 | sect2->filepos = sect->filepos; |
252b5132 | 8633 | sect2->alignment_power = sect->alignment_power; |
b34976b6 | 8634 | return TRUE; |
252b5132 RH |
8635 | } |
8636 | ||
bb0082d6 AM |
8637 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
8638 | actually creates up to two pseudosections: | |
8639 | - For the single-threaded case, a section named NAME, unless | |
8640 | such a section already exists. | |
8641 | - For the multi-threaded case, a section named "NAME/PID", where | |
8642 | PID is elfcore_make_pid (abfd). | |
8643 | Both pseudosections have identical contents. */ | |
b34976b6 | 8644 | bfd_boolean |
217aa764 AM |
8645 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
8646 | char *name, | |
8647 | size_t size, | |
8648 | ufile_ptr filepos) | |
bb0082d6 AM |
8649 | { |
8650 | char buf[100]; | |
8651 | char *threaded_name; | |
d4c88bbb | 8652 | size_t len; |
bb0082d6 AM |
8653 | asection *sect; |
8654 | ||
8655 | /* Build the section name. */ | |
8656 | ||
8657 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 8658 | len = strlen (buf) + 1; |
a50b1753 | 8659 | threaded_name = (char *) bfd_alloc (abfd, len); |
bb0082d6 | 8660 | if (threaded_name == NULL) |
b34976b6 | 8661 | return FALSE; |
d4c88bbb | 8662 | memcpy (threaded_name, buf, len); |
bb0082d6 | 8663 | |
117ed4f8 AM |
8664 | sect = bfd_make_section_anyway_with_flags (abfd, threaded_name, |
8665 | SEC_HAS_CONTENTS); | |
bb0082d6 | 8666 | if (sect == NULL) |
b34976b6 | 8667 | return FALSE; |
eea6121a | 8668 | sect->size = size; |
bb0082d6 | 8669 | sect->filepos = filepos; |
bb0082d6 AM |
8670 | sect->alignment_power = 2; |
8671 | ||
936e320b | 8672 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
8673 | } |
8674 | ||
252b5132 | 8675 | /* prstatus_t exists on: |
4a938328 | 8676 | solaris 2.5+ |
252b5132 RH |
8677 | linux 2.[01] + glibc |
8678 | unixware 4.2 | |
8679 | */ | |
8680 | ||
8681 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 8682 | |
b34976b6 | 8683 | static bfd_boolean |
217aa764 | 8684 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 8685 | { |
eea6121a | 8686 | size_t size; |
7ee38065 | 8687 | int offset; |
252b5132 | 8688 | |
4a938328 MS |
8689 | if (note->descsz == sizeof (prstatus_t)) |
8690 | { | |
8691 | prstatus_t prstat; | |
252b5132 | 8692 | |
eea6121a | 8693 | size = sizeof (prstat.pr_reg); |
7ee38065 | 8694 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 8695 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 8696 | |
fa49d224 NC |
8697 | /* Do not overwrite the core signal if it |
8698 | has already been set by another thread. */ | |
228e534f AM |
8699 | if (elf_tdata (abfd)->core->signal == 0) |
8700 | elf_tdata (abfd)->core->signal = prstat.pr_cursig; | |
8701 | if (elf_tdata (abfd)->core->pid == 0) | |
8702 | elf_tdata (abfd)->core->pid = prstat.pr_pid; | |
252b5132 | 8703 | |
4a938328 MS |
8704 | /* pr_who exists on: |
8705 | solaris 2.5+ | |
8706 | unixware 4.2 | |
8707 | pr_who doesn't exist on: | |
8708 | linux 2.[01] | |
8709 | */ | |
252b5132 | 8710 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
228e534f | 8711 | elf_tdata (abfd)->core->lwpid = prstat.pr_who; |
261b8d08 | 8712 | #else |
228e534f | 8713 | elf_tdata (abfd)->core->lwpid = prstat.pr_pid; |
252b5132 | 8714 | #endif |
4a938328 | 8715 | } |
7ee38065 | 8716 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
8717 | else if (note->descsz == sizeof (prstatus32_t)) |
8718 | { | |
8719 | /* 64-bit host, 32-bit corefile */ | |
8720 | prstatus32_t prstat; | |
8721 | ||
eea6121a | 8722 | size = sizeof (prstat.pr_reg); |
7ee38065 | 8723 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
8724 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
8725 | ||
fa49d224 NC |
8726 | /* Do not overwrite the core signal if it |
8727 | has already been set by another thread. */ | |
228e534f AM |
8728 | if (elf_tdata (abfd)->core->signal == 0) |
8729 | elf_tdata (abfd)->core->signal = prstat.pr_cursig; | |
8730 | if (elf_tdata (abfd)->core->pid == 0) | |
8731 | elf_tdata (abfd)->core->pid = prstat.pr_pid; | |
4a938328 MS |
8732 | |
8733 | /* pr_who exists on: | |
8734 | solaris 2.5+ | |
8735 | unixware 4.2 | |
8736 | pr_who doesn't exist on: | |
8737 | linux 2.[01] | |
8738 | */ | |
7ee38065 | 8739 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
228e534f | 8740 | elf_tdata (abfd)->core->lwpid = prstat.pr_who; |
261b8d08 | 8741 | #else |
228e534f | 8742 | elf_tdata (abfd)->core->lwpid = prstat.pr_pid; |
4a938328 MS |
8743 | #endif |
8744 | } | |
7ee38065 | 8745 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
8746 | else |
8747 | { | |
8748 | /* Fail - we don't know how to handle any other | |
8749 | note size (ie. data object type). */ | |
b34976b6 | 8750 | return TRUE; |
4a938328 | 8751 | } |
252b5132 | 8752 | |
bb0082d6 | 8753 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 8754 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 8755 | size, note->descpos + offset); |
252b5132 RH |
8756 | } |
8757 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
8758 | ||
bb0082d6 | 8759 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 8760 | static bfd_boolean |
217aa764 AM |
8761 | elfcore_make_note_pseudosection (bfd *abfd, |
8762 | char *name, | |
8763 | Elf_Internal_Note *note) | |
252b5132 | 8764 | { |
936e320b AM |
8765 | return _bfd_elfcore_make_pseudosection (abfd, name, |
8766 | note->descsz, note->descpos); | |
252b5132 RH |
8767 | } |
8768 | ||
ff08c6bb JB |
8769 | /* There isn't a consistent prfpregset_t across platforms, |
8770 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
8771 | data structure apart. */ |
8772 | ||
b34976b6 | 8773 | static bfd_boolean |
217aa764 | 8774 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
8775 | { |
8776 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
8777 | } | |
8778 | ||
ff08c6bb | 8779 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
971d4640 | 8780 | type of NT_PRXFPREG. Just include the whole note's contents |
ff08c6bb | 8781 | literally. */ |
c044fabd | 8782 | |
b34976b6 | 8783 | static bfd_boolean |
217aa764 | 8784 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
8785 | { |
8786 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
8787 | } | |
8788 | ||
4339cae0 L |
8789 | /* Linux dumps the Intel XSAVE extended state in a note named "LINUX" |
8790 | with a note type of NT_X86_XSTATE. Just include the whole note's | |
8791 | contents literally. */ | |
8792 | ||
8793 | static bfd_boolean | |
8794 | elfcore_grok_xstatereg (bfd *abfd, Elf_Internal_Note *note) | |
8795 | { | |
8796 | return elfcore_make_note_pseudosection (abfd, ".reg-xstate", note); | |
8797 | } | |
8798 | ||
97753bd5 AM |
8799 | static bfd_boolean |
8800 | elfcore_grok_ppc_vmx (bfd *abfd, Elf_Internal_Note *note) | |
8801 | { | |
8802 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vmx", note); | |
8803 | } | |
8804 | ||
89eeb0bc LM |
8805 | static bfd_boolean |
8806 | elfcore_grok_ppc_vsx (bfd *abfd, Elf_Internal_Note *note) | |
8807 | { | |
8808 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vsx", note); | |
8809 | } | |
97753bd5 | 8810 | |
0675e188 UW |
8811 | static bfd_boolean |
8812 | elfcore_grok_s390_high_gprs (bfd *abfd, Elf_Internal_Note *note) | |
8813 | { | |
8814 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-high-gprs", note); | |
8815 | } | |
8816 | ||
d7eeb400 MS |
8817 | static bfd_boolean |
8818 | elfcore_grok_s390_timer (bfd *abfd, Elf_Internal_Note *note) | |
8819 | { | |
8820 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-timer", note); | |
8821 | } | |
8822 | ||
8823 | static bfd_boolean | |
8824 | elfcore_grok_s390_todcmp (bfd *abfd, Elf_Internal_Note *note) | |
8825 | { | |
8826 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-todcmp", note); | |
8827 | } | |
8828 | ||
8829 | static bfd_boolean | |
8830 | elfcore_grok_s390_todpreg (bfd *abfd, Elf_Internal_Note *note) | |
8831 | { | |
8832 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-todpreg", note); | |
8833 | } | |
8834 | ||
8835 | static bfd_boolean | |
8836 | elfcore_grok_s390_ctrs (bfd *abfd, Elf_Internal_Note *note) | |
8837 | { | |
8838 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-ctrs", note); | |
8839 | } | |
8840 | ||
8841 | static bfd_boolean | |
8842 | elfcore_grok_s390_prefix (bfd *abfd, Elf_Internal_Note *note) | |
8843 | { | |
8844 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-prefix", note); | |
8845 | } | |
8846 | ||
355b81d9 UW |
8847 | static bfd_boolean |
8848 | elfcore_grok_s390_last_break (bfd *abfd, Elf_Internal_Note *note) | |
8849 | { | |
8850 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-last-break", note); | |
8851 | } | |
8852 | ||
8853 | static bfd_boolean | |
8854 | elfcore_grok_s390_system_call (bfd *abfd, Elf_Internal_Note *note) | |
8855 | { | |
8856 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-system-call", note); | |
8857 | } | |
8858 | ||
abb3f6cc NC |
8859 | static bfd_boolean |
8860 | elfcore_grok_s390_tdb (bfd *abfd, Elf_Internal_Note *note) | |
8861 | { | |
8862 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-tdb", note); | |
8863 | } | |
8864 | ||
4ef9f41a AA |
8865 | static bfd_boolean |
8866 | elfcore_grok_s390_vxrs_low (bfd *abfd, Elf_Internal_Note *note) | |
8867 | { | |
8868 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-vxrs-low", note); | |
8869 | } | |
8870 | ||
8871 | static bfd_boolean | |
8872 | elfcore_grok_s390_vxrs_high (bfd *abfd, Elf_Internal_Note *note) | |
8873 | { | |
8874 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-vxrs-high", note); | |
8875 | } | |
8876 | ||
faa9a424 UW |
8877 | static bfd_boolean |
8878 | elfcore_grok_arm_vfp (bfd *abfd, Elf_Internal_Note *note) | |
8879 | { | |
8880 | return elfcore_make_note_pseudosection (abfd, ".reg-arm-vfp", note); | |
8881 | } | |
8882 | ||
652451f8 YZ |
8883 | static bfd_boolean |
8884 | elfcore_grok_aarch_tls (bfd *abfd, Elf_Internal_Note *note) | |
8885 | { | |
8886 | return elfcore_make_note_pseudosection (abfd, ".reg-aarch-tls", note); | |
8887 | } | |
8888 | ||
8889 | static bfd_boolean | |
8890 | elfcore_grok_aarch_hw_break (bfd *abfd, Elf_Internal_Note *note) | |
8891 | { | |
8892 | return elfcore_make_note_pseudosection (abfd, ".reg-aarch-hw-break", note); | |
8893 | } | |
8894 | ||
8895 | static bfd_boolean | |
8896 | elfcore_grok_aarch_hw_watch (bfd *abfd, Elf_Internal_Note *note) | |
8897 | { | |
8898 | return elfcore_make_note_pseudosection (abfd, ".reg-aarch-hw-watch", note); | |
8899 | } | |
8900 | ||
252b5132 | 8901 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 8902 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 8903 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
8904 | typedef prpsinfo32_t elfcore_psinfo32_t; |
8905 | #endif | |
252b5132 RH |
8906 | #endif |
8907 | ||
8908 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 8909 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 8910 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
8911 | typedef psinfo32_t elfcore_psinfo32_t; |
8912 | #endif | |
252b5132 RH |
8913 | #endif |
8914 | ||
252b5132 RH |
8915 | /* return a malloc'ed copy of a string at START which is at |
8916 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 8917 | the copy will always have a terminating '\0'. */ |
252b5132 | 8918 | |
936e320b | 8919 | char * |
217aa764 | 8920 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 8921 | { |
dc810e39 | 8922 | char *dups; |
a50b1753 | 8923 | char *end = (char *) memchr (start, '\0', max); |
dc810e39 | 8924 | size_t len; |
252b5132 RH |
8925 | |
8926 | if (end == NULL) | |
8927 | len = max; | |
8928 | else | |
8929 | len = end - start; | |
8930 | ||
a50b1753 | 8931 | dups = (char *) bfd_alloc (abfd, len + 1); |
dc810e39 | 8932 | if (dups == NULL) |
252b5132 RH |
8933 | return NULL; |
8934 | ||
dc810e39 AM |
8935 | memcpy (dups, start, len); |
8936 | dups[len] = '\0'; | |
252b5132 | 8937 | |
dc810e39 | 8938 | return dups; |
252b5132 RH |
8939 | } |
8940 | ||
bb0082d6 | 8941 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 8942 | static bfd_boolean |
217aa764 | 8943 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 8944 | { |
4a938328 MS |
8945 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
8946 | { | |
8947 | elfcore_psinfo_t psinfo; | |
252b5132 | 8948 | |
7ee38065 | 8949 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 8950 | |
335e41d4 | 8951 | #if defined (HAVE_PSINFO_T_PR_PID) || defined (HAVE_PRPSINFO_T_PR_PID) |
228e534f | 8952 | elf_tdata (abfd)->core->pid = psinfo.pr_pid; |
335e41d4 | 8953 | #endif |
228e534f | 8954 | elf_tdata (abfd)->core->program |
936e320b AM |
8955 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
8956 | sizeof (psinfo.pr_fname)); | |
252b5132 | 8957 | |
228e534f | 8958 | elf_tdata (abfd)->core->command |
936e320b AM |
8959 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
8960 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 8961 | } |
7ee38065 | 8962 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
8963 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
8964 | { | |
8965 | /* 64-bit host, 32-bit corefile */ | |
8966 | elfcore_psinfo32_t psinfo; | |
8967 | ||
7ee38065 | 8968 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 8969 | |
335e41d4 | 8970 | #if defined (HAVE_PSINFO32_T_PR_PID) || defined (HAVE_PRPSINFO32_T_PR_PID) |
228e534f | 8971 | elf_tdata (abfd)->core->pid = psinfo.pr_pid; |
335e41d4 | 8972 | #endif |
228e534f | 8973 | elf_tdata (abfd)->core->program |
936e320b AM |
8974 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
8975 | sizeof (psinfo.pr_fname)); | |
4a938328 | 8976 | |
228e534f | 8977 | elf_tdata (abfd)->core->command |
936e320b AM |
8978 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
8979 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
8980 | } |
8981 | #endif | |
8982 | ||
8983 | else | |
8984 | { | |
8985 | /* Fail - we don't know how to handle any other | |
8986 | note size (ie. data object type). */ | |
b34976b6 | 8987 | return TRUE; |
4a938328 | 8988 | } |
252b5132 RH |
8989 | |
8990 | /* Note that for some reason, a spurious space is tacked | |
8991 | onto the end of the args in some (at least one anyway) | |
c044fabd | 8992 | implementations, so strip it off if it exists. */ |
252b5132 RH |
8993 | |
8994 | { | |
228e534f | 8995 | char *command = elf_tdata (abfd)->core->command; |
252b5132 RH |
8996 | int n = strlen (command); |
8997 | ||
8998 | if (0 < n && command[n - 1] == ' ') | |
8999 | command[n - 1] = '\0'; | |
9000 | } | |
9001 | ||
b34976b6 | 9002 | return TRUE; |
252b5132 RH |
9003 | } |
9004 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
9005 | ||
252b5132 | 9006 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 9007 | static bfd_boolean |
217aa764 | 9008 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 9009 | { |
f572a39d AM |
9010 | if (note->descsz == sizeof (pstatus_t) |
9011 | #if defined (HAVE_PXSTATUS_T) | |
9012 | || note->descsz == sizeof (pxstatus_t) | |
9013 | #endif | |
9014 | ) | |
4a938328 MS |
9015 | { |
9016 | pstatus_t pstat; | |
252b5132 | 9017 | |
4a938328 | 9018 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 9019 | |
228e534f | 9020 | elf_tdata (abfd)->core->pid = pstat.pr_pid; |
4a938328 | 9021 | } |
7ee38065 | 9022 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
9023 | else if (note->descsz == sizeof (pstatus32_t)) |
9024 | { | |
9025 | /* 64-bit host, 32-bit corefile */ | |
9026 | pstatus32_t pstat; | |
252b5132 | 9027 | |
4a938328 | 9028 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 9029 | |
228e534f | 9030 | elf_tdata (abfd)->core->pid = pstat.pr_pid; |
4a938328 MS |
9031 | } |
9032 | #endif | |
252b5132 RH |
9033 | /* Could grab some more details from the "representative" |
9034 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 9035 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 9036 | |
b34976b6 | 9037 | return TRUE; |
252b5132 RH |
9038 | } |
9039 | #endif /* defined (HAVE_PSTATUS_T) */ | |
9040 | ||
252b5132 | 9041 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 9042 | static bfd_boolean |
217aa764 | 9043 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
9044 | { |
9045 | lwpstatus_t lwpstat; | |
9046 | char buf[100]; | |
c044fabd | 9047 | char *name; |
d4c88bbb | 9048 | size_t len; |
c044fabd | 9049 | asection *sect; |
252b5132 | 9050 | |
f572a39d AM |
9051 | if (note->descsz != sizeof (lwpstat) |
9052 | #if defined (HAVE_LWPXSTATUS_T) | |
9053 | && note->descsz != sizeof (lwpxstatus_t) | |
9054 | #endif | |
9055 | ) | |
b34976b6 | 9056 | return TRUE; |
252b5132 RH |
9057 | |
9058 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
9059 | ||
228e534f | 9060 | elf_tdata (abfd)->core->lwpid = lwpstat.pr_lwpid; |
a1504221 JB |
9061 | /* Do not overwrite the core signal if it has already been set by |
9062 | another thread. */ | |
228e534f AM |
9063 | if (elf_tdata (abfd)->core->signal == 0) |
9064 | elf_tdata (abfd)->core->signal = lwpstat.pr_cursig; | |
252b5132 | 9065 | |
c044fabd | 9066 | /* Make a ".reg/999" section. */ |
252b5132 RH |
9067 | |
9068 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 9069 | len = strlen (buf) + 1; |
217aa764 | 9070 | name = bfd_alloc (abfd, len); |
252b5132 | 9071 | if (name == NULL) |
b34976b6 | 9072 | return FALSE; |
d4c88bbb | 9073 | memcpy (name, buf, len); |
252b5132 | 9074 | |
117ed4f8 | 9075 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 9076 | if (sect == NULL) |
b34976b6 | 9077 | return FALSE; |
252b5132 RH |
9078 | |
9079 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 9080 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
9081 | sect->filepos = note->descpos |
9082 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
9083 | #endif | |
9084 | ||
9085 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 9086 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
9087 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
9088 | #endif | |
9089 | ||
252b5132 RH |
9090 | sect->alignment_power = 2; |
9091 | ||
9092 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 9093 | return FALSE; |
252b5132 RH |
9094 | |
9095 | /* Make a ".reg2/999" section */ | |
9096 | ||
9097 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 9098 | len = strlen (buf) + 1; |
217aa764 | 9099 | name = bfd_alloc (abfd, len); |
252b5132 | 9100 | if (name == NULL) |
b34976b6 | 9101 | return FALSE; |
d4c88bbb | 9102 | memcpy (name, buf, len); |
252b5132 | 9103 | |
117ed4f8 | 9104 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 9105 | if (sect == NULL) |
b34976b6 | 9106 | return FALSE; |
252b5132 RH |
9107 | |
9108 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 9109 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
9110 | sect->filepos = note->descpos |
9111 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
9112 | #endif | |
9113 | ||
9114 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 9115 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
9116 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
9117 | #endif | |
9118 | ||
252b5132 RH |
9119 | sect->alignment_power = 2; |
9120 | ||
936e320b | 9121 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
9122 | } |
9123 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
9124 | ||
b34976b6 | 9125 | static bfd_boolean |
217aa764 | 9126 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
9127 | { |
9128 | char buf[30]; | |
c044fabd | 9129 | char *name; |
d4c88bbb | 9130 | size_t len; |
c044fabd | 9131 | asection *sect; |
4a6636fb PA |
9132 | int type; |
9133 | int is_active_thread; | |
9134 | bfd_vma base_addr; | |
16e9c715 | 9135 | |
4a6636fb | 9136 | if (note->descsz < 728) |
b34976b6 | 9137 | return TRUE; |
16e9c715 | 9138 | |
4a6636fb PA |
9139 | if (! CONST_STRNEQ (note->namedata, "win32")) |
9140 | return TRUE; | |
9141 | ||
9142 | type = bfd_get_32 (abfd, note->descdata); | |
c044fabd | 9143 | |
4a6636fb | 9144 | switch (type) |
16e9c715 | 9145 | { |
4a6636fb | 9146 | case 1 /* NOTE_INFO_PROCESS */: |
228e534f | 9147 | /* FIXME: need to add ->core->command. */ |
4a6636fb | 9148 | /* process_info.pid */ |
228e534f | 9149 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 8); |
4a6636fb | 9150 | /* process_info.signal */ |
228e534f | 9151 | elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 12); |
c044fabd | 9152 | break; |
16e9c715 | 9153 | |
4a6636fb | 9154 | case 2 /* NOTE_INFO_THREAD */: |
16e9c715 | 9155 | /* Make a ".reg/999" section. */ |
4a6636fb PA |
9156 | /* thread_info.tid */ |
9157 | sprintf (buf, ".reg/%ld", (long) bfd_get_32 (abfd, note->descdata + 8)); | |
c044fabd | 9158 | |
d4c88bbb | 9159 | len = strlen (buf) + 1; |
a50b1753 | 9160 | name = (char *) bfd_alloc (abfd, len); |
16e9c715 | 9161 | if (name == NULL) |
b34976b6 | 9162 | return FALSE; |
c044fabd | 9163 | |
d4c88bbb | 9164 | memcpy (name, buf, len); |
16e9c715 | 9165 | |
117ed4f8 | 9166 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
16e9c715 | 9167 | if (sect == NULL) |
b34976b6 | 9168 | return FALSE; |
c044fabd | 9169 | |
4a6636fb PA |
9170 | /* sizeof (thread_info.thread_context) */ |
9171 | sect->size = 716; | |
9172 | /* offsetof (thread_info.thread_context) */ | |
9173 | sect->filepos = note->descpos + 12; | |
16e9c715 NC |
9174 | sect->alignment_power = 2; |
9175 | ||
4a6636fb PA |
9176 | /* thread_info.is_active_thread */ |
9177 | is_active_thread = bfd_get_32 (abfd, note->descdata + 8); | |
9178 | ||
9179 | if (is_active_thread) | |
16e9c715 | 9180 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) |
b34976b6 | 9181 | return FALSE; |
16e9c715 NC |
9182 | break; |
9183 | ||
4a6636fb | 9184 | case 3 /* NOTE_INFO_MODULE */: |
16e9c715 | 9185 | /* Make a ".module/xxxxxxxx" section. */ |
4a6636fb PA |
9186 | /* module_info.base_address */ |
9187 | base_addr = bfd_get_32 (abfd, note->descdata + 4); | |
0af1713e | 9188 | sprintf (buf, ".module/%08lx", (unsigned long) base_addr); |
c044fabd | 9189 | |
d4c88bbb | 9190 | len = strlen (buf) + 1; |
a50b1753 | 9191 | name = (char *) bfd_alloc (abfd, len); |
16e9c715 | 9192 | if (name == NULL) |
b34976b6 | 9193 | return FALSE; |
c044fabd | 9194 | |
d4c88bbb | 9195 | memcpy (name, buf, len); |
252b5132 | 9196 | |
117ed4f8 | 9197 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
c044fabd | 9198 | |
16e9c715 | 9199 | if (sect == NULL) |
b34976b6 | 9200 | return FALSE; |
c044fabd | 9201 | |
eea6121a | 9202 | sect->size = note->descsz; |
16e9c715 | 9203 | sect->filepos = note->descpos; |
16e9c715 NC |
9204 | sect->alignment_power = 2; |
9205 | break; | |
9206 | ||
9207 | default: | |
b34976b6 | 9208 | return TRUE; |
16e9c715 NC |
9209 | } |
9210 | ||
b34976b6 | 9211 | return TRUE; |
16e9c715 | 9212 | } |
252b5132 | 9213 | |
b34976b6 | 9214 | static bfd_boolean |
217aa764 | 9215 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 9216 | { |
9c5bfbb7 | 9217 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 9218 | |
252b5132 RH |
9219 | switch (note->type) |
9220 | { | |
9221 | default: | |
b34976b6 | 9222 | return TRUE; |
252b5132 | 9223 | |
252b5132 | 9224 | case NT_PRSTATUS: |
bb0082d6 AM |
9225 | if (bed->elf_backend_grok_prstatus) |
9226 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 9227 | return TRUE; |
bb0082d6 | 9228 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 9229 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 9230 | #else |
b34976b6 | 9231 | return TRUE; |
252b5132 RH |
9232 | #endif |
9233 | ||
9234 | #if defined (HAVE_PSTATUS_T) | |
9235 | case NT_PSTATUS: | |
9236 | return elfcore_grok_pstatus (abfd, note); | |
9237 | #endif | |
9238 | ||
9239 | #if defined (HAVE_LWPSTATUS_T) | |
9240 | case NT_LWPSTATUS: | |
9241 | return elfcore_grok_lwpstatus (abfd, note); | |
9242 | #endif | |
9243 | ||
9244 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
9245 | return elfcore_grok_prfpreg (abfd, note); | |
9246 | ||
c044fabd | 9247 | case NT_WIN32PSTATUS: |
16e9c715 | 9248 | return elfcore_grok_win32pstatus (abfd, note); |
16e9c715 | 9249 | |
c044fabd | 9250 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
9251 | if (note->namesz == 6 |
9252 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
9253 | return elfcore_grok_prxfpreg (abfd, note); |
9254 | else | |
b34976b6 | 9255 | return TRUE; |
ff08c6bb | 9256 | |
4339cae0 L |
9257 | case NT_X86_XSTATE: /* Linux XSAVE extension */ |
9258 | if (note->namesz == 6 | |
9259 | && strcmp (note->namedata, "LINUX") == 0) | |
9260 | return elfcore_grok_xstatereg (abfd, note); | |
97de3545 JB |
9261 | else if (note->namesz == 8 |
9262 | && strcmp (note->namedata, "FreeBSD") == 0) | |
9263 | return elfcore_grok_xstatereg (abfd, note); | |
4339cae0 L |
9264 | else |
9265 | return TRUE; | |
9266 | ||
97753bd5 AM |
9267 | case NT_PPC_VMX: |
9268 | if (note->namesz == 6 | |
9269 | && strcmp (note->namedata, "LINUX") == 0) | |
9270 | return elfcore_grok_ppc_vmx (abfd, note); | |
9271 | else | |
9272 | return TRUE; | |
9273 | ||
89eeb0bc LM |
9274 | case NT_PPC_VSX: |
9275 | if (note->namesz == 6 | |
9276 | && strcmp (note->namedata, "LINUX") == 0) | |
9277 | return elfcore_grok_ppc_vsx (abfd, note); | |
9278 | else | |
9279 | return TRUE; | |
9280 | ||
0675e188 UW |
9281 | case NT_S390_HIGH_GPRS: |
9282 | if (note->namesz == 6 | |
9283 | && strcmp (note->namedata, "LINUX") == 0) | |
9284 | return elfcore_grok_s390_high_gprs (abfd, note); | |
9285 | else | |
9286 | return TRUE; | |
9287 | ||
d7eeb400 MS |
9288 | case NT_S390_TIMER: |
9289 | if (note->namesz == 6 | |
9290 | && strcmp (note->namedata, "LINUX") == 0) | |
9291 | return elfcore_grok_s390_timer (abfd, note); | |
9292 | else | |
9293 | return TRUE; | |
9294 | ||
9295 | case NT_S390_TODCMP: | |
9296 | if (note->namesz == 6 | |
9297 | && strcmp (note->namedata, "LINUX") == 0) | |
9298 | return elfcore_grok_s390_todcmp (abfd, note); | |
9299 | else | |
9300 | return TRUE; | |
9301 | ||
9302 | case NT_S390_TODPREG: | |
9303 | if (note->namesz == 6 | |
9304 | && strcmp (note->namedata, "LINUX") == 0) | |
9305 | return elfcore_grok_s390_todpreg (abfd, note); | |
9306 | else | |
9307 | return TRUE; | |
9308 | ||
9309 | case NT_S390_CTRS: | |
9310 | if (note->namesz == 6 | |
9311 | && strcmp (note->namedata, "LINUX") == 0) | |
9312 | return elfcore_grok_s390_ctrs (abfd, note); | |
9313 | else | |
9314 | return TRUE; | |
9315 | ||
9316 | case NT_S390_PREFIX: | |
9317 | if (note->namesz == 6 | |
9318 | && strcmp (note->namedata, "LINUX") == 0) | |
9319 | return elfcore_grok_s390_prefix (abfd, note); | |
9320 | else | |
9321 | return TRUE; | |
9322 | ||
355b81d9 UW |
9323 | case NT_S390_LAST_BREAK: |
9324 | if (note->namesz == 6 | |
9325 | && strcmp (note->namedata, "LINUX") == 0) | |
9326 | return elfcore_grok_s390_last_break (abfd, note); | |
9327 | else | |
9328 | return TRUE; | |
9329 | ||
9330 | case NT_S390_SYSTEM_CALL: | |
9331 | if (note->namesz == 6 | |
9332 | && strcmp (note->namedata, "LINUX") == 0) | |
9333 | return elfcore_grok_s390_system_call (abfd, note); | |
9334 | else | |
9335 | return TRUE; | |
9336 | ||
abb3f6cc NC |
9337 | case NT_S390_TDB: |
9338 | if (note->namesz == 6 | |
9339 | && strcmp (note->namedata, "LINUX") == 0) | |
9340 | return elfcore_grok_s390_tdb (abfd, note); | |
9341 | else | |
9342 | return TRUE; | |
9343 | ||
4ef9f41a AA |
9344 | case NT_S390_VXRS_LOW: |
9345 | if (note->namesz == 6 | |
9346 | && strcmp (note->namedata, "LINUX") == 0) | |
9347 | return elfcore_grok_s390_vxrs_low (abfd, note); | |
9348 | else | |
9349 | return TRUE; | |
9350 | ||
9351 | case NT_S390_VXRS_HIGH: | |
9352 | if (note->namesz == 6 | |
9353 | && strcmp (note->namedata, "LINUX") == 0) | |
9354 | return elfcore_grok_s390_vxrs_high (abfd, note); | |
9355 | else | |
9356 | return TRUE; | |
9357 | ||
faa9a424 UW |
9358 | case NT_ARM_VFP: |
9359 | if (note->namesz == 6 | |
9360 | && strcmp (note->namedata, "LINUX") == 0) | |
9361 | return elfcore_grok_arm_vfp (abfd, note); | |
9362 | else | |
9363 | return TRUE; | |
9364 | ||
652451f8 YZ |
9365 | case NT_ARM_TLS: |
9366 | if (note->namesz == 6 | |
9367 | && strcmp (note->namedata, "LINUX") == 0) | |
9368 | return elfcore_grok_aarch_tls (abfd, note); | |
9369 | else | |
9370 | return TRUE; | |
9371 | ||
9372 | case NT_ARM_HW_BREAK: | |
9373 | if (note->namesz == 6 | |
9374 | && strcmp (note->namedata, "LINUX") == 0) | |
9375 | return elfcore_grok_aarch_hw_break (abfd, note); | |
9376 | else | |
9377 | return TRUE; | |
9378 | ||
9379 | case NT_ARM_HW_WATCH: | |
9380 | if (note->namesz == 6 | |
9381 | && strcmp (note->namedata, "LINUX") == 0) | |
9382 | return elfcore_grok_aarch_hw_watch (abfd, note); | |
9383 | else | |
9384 | return TRUE; | |
9385 | ||
252b5132 RH |
9386 | case NT_PRPSINFO: |
9387 | case NT_PSINFO: | |
bb0082d6 AM |
9388 | if (bed->elf_backend_grok_psinfo) |
9389 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 9390 | return TRUE; |
bb0082d6 | 9391 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 9392 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 9393 | #else |
b34976b6 | 9394 | return TRUE; |
252b5132 | 9395 | #endif |
3333a7c3 RM |
9396 | |
9397 | case NT_AUXV: | |
9398 | { | |
117ed4f8 AM |
9399 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", |
9400 | SEC_HAS_CONTENTS); | |
3333a7c3 RM |
9401 | |
9402 | if (sect == NULL) | |
9403 | return FALSE; | |
eea6121a | 9404 | sect->size = note->descsz; |
3333a7c3 | 9405 | sect->filepos = note->descpos; |
3333a7c3 RM |
9406 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; |
9407 | ||
9408 | return TRUE; | |
9409 | } | |
9015683b | 9410 | |
451b7c33 TT |
9411 | case NT_FILE: |
9412 | return elfcore_make_note_pseudosection (abfd, ".note.linuxcore.file", | |
9413 | note); | |
9414 | ||
9015683b TT |
9415 | case NT_SIGINFO: |
9416 | return elfcore_make_note_pseudosection (abfd, ".note.linuxcore.siginfo", | |
9417 | note); | |
5b2c414d JB |
9418 | |
9419 | case NT_FREEBSD_THRMISC: | |
9420 | if (note->namesz == 8 | |
9421 | && strcmp (note->namedata, "FreeBSD") == 0) | |
9422 | return elfcore_make_note_pseudosection (abfd, ".thrmisc", note); | |
9423 | else | |
9424 | return TRUE; | |
252b5132 RH |
9425 | } |
9426 | } | |
9427 | ||
718175fa JK |
9428 | static bfd_boolean |
9429 | elfobj_grok_gnu_build_id (bfd *abfd, Elf_Internal_Note *note) | |
9430 | { | |
c74f7d1c | 9431 | struct bfd_build_id* build_id; |
30e8ee25 AM |
9432 | |
9433 | if (note->descsz == 0) | |
9434 | return FALSE; | |
9435 | ||
c74f7d1c JT |
9436 | build_id = bfd_alloc (abfd, sizeof (struct bfd_build_id) - 1 + note->descsz); |
9437 | if (build_id == NULL) | |
718175fa JK |
9438 | return FALSE; |
9439 | ||
c74f7d1c JT |
9440 | build_id->size = note->descsz; |
9441 | memcpy (build_id->data, note->descdata, note->descsz); | |
9442 | abfd->build_id = build_id; | |
718175fa JK |
9443 | |
9444 | return TRUE; | |
9445 | } | |
9446 | ||
9447 | static bfd_boolean | |
9448 | elfobj_grok_gnu_note (bfd *abfd, Elf_Internal_Note *note) | |
9449 | { | |
9450 | switch (note->type) | |
9451 | { | |
9452 | default: | |
9453 | return TRUE; | |
9454 | ||
9455 | case NT_GNU_BUILD_ID: | |
9456 | return elfobj_grok_gnu_build_id (abfd, note); | |
9457 | } | |
9458 | } | |
9459 | ||
e21e5835 NC |
9460 | static bfd_boolean |
9461 | elfobj_grok_stapsdt_note_1 (bfd *abfd, Elf_Internal_Note *note) | |
9462 | { | |
9463 | struct sdt_note *cur = | |
9464 | (struct sdt_note *) bfd_alloc (abfd, sizeof (struct sdt_note) | |
9465 | + note->descsz); | |
9466 | ||
9467 | cur->next = (struct sdt_note *) (elf_tdata (abfd))->sdt_note_head; | |
9468 | cur->size = (bfd_size_type) note->descsz; | |
9469 | memcpy (cur->data, note->descdata, note->descsz); | |
9470 | ||
9471 | elf_tdata (abfd)->sdt_note_head = cur; | |
9472 | ||
9473 | return TRUE; | |
9474 | } | |
9475 | ||
9476 | static bfd_boolean | |
9477 | elfobj_grok_stapsdt_note (bfd *abfd, Elf_Internal_Note *note) | |
9478 | { | |
9479 | switch (note->type) | |
9480 | { | |
9481 | case NT_STAPSDT: | |
9482 | return elfobj_grok_stapsdt_note_1 (abfd, note); | |
9483 | ||
9484 | default: | |
9485 | return TRUE; | |
9486 | } | |
9487 | } | |
9488 | ||
b34976b6 | 9489 | static bfd_boolean |
217aa764 | 9490 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
9491 | { |
9492 | char *cp; | |
9493 | ||
9494 | cp = strchr (note->namedata, '@'); | |
9495 | if (cp != NULL) | |
9496 | { | |
d2b64500 | 9497 | *lwpidp = atoi(cp + 1); |
b34976b6 | 9498 | return TRUE; |
50b2bdb7 | 9499 | } |
b34976b6 | 9500 | return FALSE; |
50b2bdb7 AM |
9501 | } |
9502 | ||
b34976b6 | 9503 | static bfd_boolean |
217aa764 | 9504 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 | 9505 | { |
50b2bdb7 | 9506 | /* Signal number at offset 0x08. */ |
228e534f | 9507 | elf_tdata (abfd)->core->signal |
50b2bdb7 AM |
9508 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); |
9509 | ||
9510 | /* Process ID at offset 0x50. */ | |
228e534f | 9511 | elf_tdata (abfd)->core->pid |
50b2bdb7 AM |
9512 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); |
9513 | ||
9514 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
228e534f | 9515 | elf_tdata (abfd)->core->command |
50b2bdb7 AM |
9516 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); |
9517 | ||
7720ba9f MK |
9518 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
9519 | note); | |
50b2bdb7 AM |
9520 | } |
9521 | ||
b34976b6 | 9522 | static bfd_boolean |
217aa764 | 9523 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
9524 | { |
9525 | int lwp; | |
9526 | ||
9527 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
228e534f | 9528 | elf_tdata (abfd)->core->lwpid = lwp; |
50b2bdb7 | 9529 | |
b4db1224 | 9530 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
9531 | { |
9532 | /* NetBSD-specific core "procinfo". Note that we expect to | |
08a40648 AM |
9533 | find this note before any of the others, which is fine, |
9534 | since the kernel writes this note out first when it | |
9535 | creates a core file. */ | |
47d9a591 | 9536 | |
50b2bdb7 AM |
9537 | return elfcore_grok_netbsd_procinfo (abfd, note); |
9538 | } | |
9539 | ||
b4db1224 JT |
9540 | /* As of Jan 2002 there are no other machine-independent notes |
9541 | defined for NetBSD core files. If the note type is less | |
9542 | than the start of the machine-dependent note types, we don't | |
9543 | understand it. */ | |
47d9a591 | 9544 | |
b4db1224 | 9545 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 9546 | return TRUE; |
50b2bdb7 AM |
9547 | |
9548 | ||
9549 | switch (bfd_get_arch (abfd)) | |
9550 | { | |
08a40648 AM |
9551 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and |
9552 | PT_GETFPREGS == mach+2. */ | |
50b2bdb7 AM |
9553 | |
9554 | case bfd_arch_alpha: | |
9555 | case bfd_arch_sparc: | |
9556 | switch (note->type) | |
08a40648 AM |
9557 | { |
9558 | case NT_NETBSDCORE_FIRSTMACH+0: | |
9559 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 9560 | |
08a40648 AM |
9561 | case NT_NETBSDCORE_FIRSTMACH+2: |
9562 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 9563 | |
08a40648 AM |
9564 | default: |
9565 | return TRUE; | |
9566 | } | |
50b2bdb7 | 9567 | |
08a40648 AM |
9568 | /* On all other arch's, PT_GETREGS == mach+1 and |
9569 | PT_GETFPREGS == mach+3. */ | |
50b2bdb7 AM |
9570 | |
9571 | default: | |
9572 | switch (note->type) | |
08a40648 AM |
9573 | { |
9574 | case NT_NETBSDCORE_FIRSTMACH+1: | |
9575 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 9576 | |
08a40648 AM |
9577 | case NT_NETBSDCORE_FIRSTMACH+3: |
9578 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 9579 | |
08a40648 AM |
9580 | default: |
9581 | return TRUE; | |
9582 | } | |
50b2bdb7 AM |
9583 | } |
9584 | /* NOTREACHED */ | |
9585 | } | |
9586 | ||
67cc5033 MK |
9587 | static bfd_boolean |
9588 | elfcore_grok_openbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) | |
9589 | { | |
9590 | /* Signal number at offset 0x08. */ | |
228e534f | 9591 | elf_tdata (abfd)->core->signal |
67cc5033 MK |
9592 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); |
9593 | ||
9594 | /* Process ID at offset 0x20. */ | |
228e534f | 9595 | elf_tdata (abfd)->core->pid |
67cc5033 MK |
9596 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x20); |
9597 | ||
9598 | /* Command name at 0x48 (max 32 bytes, including nul). */ | |
228e534f | 9599 | elf_tdata (abfd)->core->command |
67cc5033 MK |
9600 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x48, 31); |
9601 | ||
9602 | return TRUE; | |
9603 | } | |
9604 | ||
9605 | static bfd_boolean | |
9606 | elfcore_grok_openbsd_note (bfd *abfd, Elf_Internal_Note *note) | |
9607 | { | |
9608 | if (note->type == NT_OPENBSD_PROCINFO) | |
9609 | return elfcore_grok_openbsd_procinfo (abfd, note); | |
9610 | ||
9611 | if (note->type == NT_OPENBSD_REGS) | |
9612 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
9613 | ||
9614 | if (note->type == NT_OPENBSD_FPREGS) | |
9615 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
9616 | ||
9617 | if (note->type == NT_OPENBSD_XFPREGS) | |
9618 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
9619 | ||
9620 | if (note->type == NT_OPENBSD_AUXV) | |
9621 | { | |
9622 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", | |
9623 | SEC_HAS_CONTENTS); | |
9624 | ||
9625 | if (sect == NULL) | |
9626 | return FALSE; | |
9627 | sect->size = note->descsz; | |
9628 | sect->filepos = note->descpos; | |
9629 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
9630 | ||
9631 | return TRUE; | |
9632 | } | |
9633 | ||
9634 | if (note->type == NT_OPENBSD_WCOOKIE) | |
9635 | { | |
9636 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".wcookie", | |
9637 | SEC_HAS_CONTENTS); | |
9638 | ||
9639 | if (sect == NULL) | |
9640 | return FALSE; | |
9641 | sect->size = note->descsz; | |
9642 | sect->filepos = note->descpos; | |
9643 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
9644 | ||
9645 | return TRUE; | |
9646 | } | |
9647 | ||
9648 | return TRUE; | |
9649 | } | |
9650 | ||
07c6e936 | 9651 | static bfd_boolean |
d3fd4074 | 9652 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid) |
07c6e936 NC |
9653 | { |
9654 | void *ddata = note->descdata; | |
9655 | char buf[100]; | |
9656 | char *name; | |
9657 | asection *sect; | |
f8843e87 AM |
9658 | short sig; |
9659 | unsigned flags; | |
07c6e936 NC |
9660 | |
9661 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
228e534f | 9662 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, (bfd_byte *) ddata); |
07c6e936 | 9663 | |
f8843e87 AM |
9664 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
9665 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
9666 | ||
9667 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
9668 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
9669 | |
9670 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
9671 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
9672 | { | |
228e534f AM |
9673 | elf_tdata (abfd)->core->signal = sig; |
9674 | elf_tdata (abfd)->core->lwpid = *tid; | |
f8843e87 | 9675 | } |
07c6e936 | 9676 | |
f8843e87 AM |
9677 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
9678 | do not come from signals so we make sure we set the current | |
9679 | thread just in case. */ | |
9680 | if (flags & 0x00000080) | |
228e534f | 9681 | elf_tdata (abfd)->core->lwpid = *tid; |
07c6e936 NC |
9682 | |
9683 | /* Make a ".qnx_core_status/%d" section. */ | |
d3fd4074 | 9684 | sprintf (buf, ".qnx_core_status/%ld", *tid); |
07c6e936 | 9685 | |
a50b1753 | 9686 | name = (char *) bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
9687 | if (name == NULL) |
9688 | return FALSE; | |
9689 | strcpy (name, buf); | |
9690 | ||
117ed4f8 | 9691 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
9692 | if (sect == NULL) |
9693 | return FALSE; | |
9694 | ||
eea6121a | 9695 | sect->size = note->descsz; |
07c6e936 | 9696 | sect->filepos = note->descpos; |
07c6e936 NC |
9697 | sect->alignment_power = 2; |
9698 | ||
9699 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
9700 | } | |
9701 | ||
9702 | static bfd_boolean | |
d69f560c KW |
9703 | elfcore_grok_nto_regs (bfd *abfd, |
9704 | Elf_Internal_Note *note, | |
d3fd4074 | 9705 | long tid, |
d69f560c | 9706 | char *base) |
07c6e936 NC |
9707 | { |
9708 | char buf[100]; | |
9709 | char *name; | |
9710 | asection *sect; | |
9711 | ||
d69f560c | 9712 | /* Make a "(base)/%d" section. */ |
d3fd4074 | 9713 | sprintf (buf, "%s/%ld", base, tid); |
07c6e936 | 9714 | |
a50b1753 | 9715 | name = (char *) bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
9716 | if (name == NULL) |
9717 | return FALSE; | |
9718 | strcpy (name, buf); | |
9719 | ||
117ed4f8 | 9720 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
9721 | if (sect == NULL) |
9722 | return FALSE; | |
9723 | ||
eea6121a | 9724 | sect->size = note->descsz; |
07c6e936 | 9725 | sect->filepos = note->descpos; |
07c6e936 NC |
9726 | sect->alignment_power = 2; |
9727 | ||
f8843e87 | 9728 | /* This is the current thread. */ |
228e534f | 9729 | if (elf_tdata (abfd)->core->lwpid == tid) |
d69f560c | 9730 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
9731 | |
9732 | return TRUE; | |
07c6e936 NC |
9733 | } |
9734 | ||
9735 | #define BFD_QNT_CORE_INFO 7 | |
9736 | #define BFD_QNT_CORE_STATUS 8 | |
9737 | #define BFD_QNT_CORE_GREG 9 | |
9738 | #define BFD_QNT_CORE_FPREG 10 | |
9739 | ||
9740 | static bfd_boolean | |
217aa764 | 9741 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
9742 | { |
9743 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 9744 | tid from the previous call to pass down to the next gregs |
07c6e936 | 9745 | function. */ |
d3fd4074 | 9746 | static long tid = 1; |
07c6e936 NC |
9747 | |
9748 | switch (note->type) | |
9749 | { | |
d69f560c KW |
9750 | case BFD_QNT_CORE_INFO: |
9751 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
9752 | case BFD_QNT_CORE_STATUS: | |
9753 | return elfcore_grok_nto_status (abfd, note, &tid); | |
9754 | case BFD_QNT_CORE_GREG: | |
9755 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
9756 | case BFD_QNT_CORE_FPREG: | |
9757 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
9758 | default: | |
9759 | return TRUE; | |
07c6e936 NC |
9760 | } |
9761 | } | |
9762 | ||
b15fa79e AM |
9763 | static bfd_boolean |
9764 | elfcore_grok_spu_note (bfd *abfd, Elf_Internal_Note *note) | |
9765 | { | |
9766 | char *name; | |
9767 | asection *sect; | |
9768 | size_t len; | |
9769 | ||
9770 | /* Use note name as section name. */ | |
9771 | len = note->namesz; | |
a50b1753 | 9772 | name = (char *) bfd_alloc (abfd, len); |
b15fa79e AM |
9773 | if (name == NULL) |
9774 | return FALSE; | |
9775 | memcpy (name, note->namedata, len); | |
9776 | name[len - 1] = '\0'; | |
9777 | ||
9778 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); | |
9779 | if (sect == NULL) | |
9780 | return FALSE; | |
9781 | ||
9782 | sect->size = note->descsz; | |
9783 | sect->filepos = note->descpos; | |
9784 | sect->alignment_power = 1; | |
9785 | ||
9786 | return TRUE; | |
9787 | } | |
9788 | ||
7c76fa91 MS |
9789 | /* Function: elfcore_write_note |
9790 | ||
47d9a591 | 9791 | Inputs: |
a39f3346 | 9792 | buffer to hold note, and current size of buffer |
7c76fa91 MS |
9793 | name of note |
9794 | type of note | |
9795 | data for note | |
9796 | size of data for note | |
9797 | ||
a39f3346 AM |
9798 | Writes note to end of buffer. ELF64 notes are written exactly as |
9799 | for ELF32, despite the current (as of 2006) ELF gabi specifying | |
9800 | that they ought to have 8-byte namesz and descsz field, and have | |
9801 | 8-byte alignment. Other writers, eg. Linux kernel, do the same. | |
9802 | ||
7c76fa91 | 9803 | Return: |
a39f3346 | 9804 | Pointer to realloc'd buffer, *BUFSIZ updated. */ |
7c76fa91 MS |
9805 | |
9806 | char * | |
a39f3346 | 9807 | elfcore_write_note (bfd *abfd, |
217aa764 | 9808 | char *buf, |
a39f3346 | 9809 | int *bufsiz, |
217aa764 | 9810 | const char *name, |
a39f3346 | 9811 | int type, |
217aa764 | 9812 | const void *input, |
a39f3346 | 9813 | int size) |
7c76fa91 MS |
9814 | { |
9815 | Elf_External_Note *xnp; | |
d4c88bbb | 9816 | size_t namesz; |
d4c88bbb | 9817 | size_t newspace; |
a39f3346 | 9818 | char *dest; |
7c76fa91 | 9819 | |
d4c88bbb | 9820 | namesz = 0; |
d4c88bbb | 9821 | if (name != NULL) |
a39f3346 | 9822 | namesz = strlen (name) + 1; |
d4c88bbb | 9823 | |
a39f3346 | 9824 | newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4); |
d4c88bbb | 9825 | |
a50b1753 | 9826 | buf = (char *) realloc (buf, *bufsiz + newspace); |
14b1c01e AM |
9827 | if (buf == NULL) |
9828 | return buf; | |
a39f3346 | 9829 | dest = buf + *bufsiz; |
7c76fa91 MS |
9830 | *bufsiz += newspace; |
9831 | xnp = (Elf_External_Note *) dest; | |
9832 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
9833 | H_PUT_32 (abfd, size, xnp->descsz); | |
9834 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
9835 | dest = xnp->name; |
9836 | if (name != NULL) | |
9837 | { | |
9838 | memcpy (dest, name, namesz); | |
9839 | dest += namesz; | |
a39f3346 | 9840 | while (namesz & 3) |
d4c88bbb AM |
9841 | { |
9842 | *dest++ = '\0'; | |
a39f3346 | 9843 | ++namesz; |
d4c88bbb AM |
9844 | } |
9845 | } | |
9846 | memcpy (dest, input, size); | |
a39f3346 AM |
9847 | dest += size; |
9848 | while (size & 3) | |
9849 | { | |
9850 | *dest++ = '\0'; | |
9851 | ++size; | |
9852 | } | |
9853 | return buf; | |
7c76fa91 MS |
9854 | } |
9855 | ||
7c76fa91 | 9856 | char * |
217aa764 AM |
9857 | elfcore_write_prpsinfo (bfd *abfd, |
9858 | char *buf, | |
9859 | int *bufsiz, | |
9860 | const char *fname, | |
9861 | const char *psargs) | |
7c76fa91 | 9862 | { |
183e98be AM |
9863 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
9864 | ||
9865 | if (bed->elf_backend_write_core_note != NULL) | |
9866 | { | |
9867 | char *ret; | |
9868 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
9869 | NT_PRPSINFO, fname, psargs); | |
9870 | if (ret != NULL) | |
9871 | return ret; | |
9872 | } | |
7c76fa91 | 9873 | |
1f20dca5 | 9874 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
183e98be AM |
9875 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
9876 | if (bed->s->elfclass == ELFCLASS32) | |
9877 | { | |
9878 | #if defined (HAVE_PSINFO32_T) | |
9879 | psinfo32_t data; | |
9880 | int note_type = NT_PSINFO; | |
9881 | #else | |
9882 | prpsinfo32_t data; | |
9883 | int note_type = NT_PRPSINFO; | |
9884 | #endif | |
9885 | ||
9886 | memset (&data, 0, sizeof (data)); | |
9887 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
9888 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
9889 | return elfcore_write_note (abfd, buf, bufsiz, | |
1f20dca5 | 9890 | "CORE", note_type, &data, sizeof (data)); |
183e98be AM |
9891 | } |
9892 | else | |
9893 | #endif | |
9894 | { | |
7c76fa91 | 9895 | #if defined (HAVE_PSINFO_T) |
183e98be AM |
9896 | psinfo_t data; |
9897 | int note_type = NT_PSINFO; | |
7c76fa91 | 9898 | #else |
183e98be AM |
9899 | prpsinfo_t data; |
9900 | int note_type = NT_PRPSINFO; | |
7c76fa91 MS |
9901 | #endif |
9902 | ||
183e98be AM |
9903 | memset (&data, 0, sizeof (data)); |
9904 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
9905 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
9906 | return elfcore_write_note (abfd, buf, bufsiz, | |
1f20dca5 | 9907 | "CORE", note_type, &data, sizeof (data)); |
183e98be | 9908 | } |
7c76fa91 MS |
9909 | #endif /* PSINFO_T or PRPSINFO_T */ |
9910 | ||
1f20dca5 UW |
9911 | free (buf); |
9912 | return NULL; | |
9913 | } | |
9914 | ||
70a38d42 SDJ |
9915 | char * |
9916 | elfcore_write_linux_prpsinfo32 | |
9917 | (bfd *abfd, char *buf, int *bufsiz, | |
9918 | const struct elf_internal_linux_prpsinfo *prpsinfo) | |
9919 | { | |
9920 | struct elf_external_linux_prpsinfo32 data; | |
9921 | ||
aeb70569 | 9922 | swap_linux_prpsinfo32_out (abfd, prpsinfo, &data); |
70a38d42 SDJ |
9923 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", NT_PRPSINFO, |
9924 | &data, sizeof (data)); | |
9925 | } | |
9926 | ||
9927 | char * | |
9928 | elfcore_write_linux_prpsinfo64 | |
9929 | (bfd *abfd, char *buf, int *bufsiz, | |
9930 | const struct elf_internal_linux_prpsinfo *prpsinfo) | |
9931 | { | |
9932 | struct elf_external_linux_prpsinfo64 data; | |
9933 | ||
aeb70569 | 9934 | swap_linux_prpsinfo64_out (abfd, prpsinfo, &data); |
70a38d42 SDJ |
9935 | return elfcore_write_note (abfd, buf, bufsiz, |
9936 | "CORE", NT_PRPSINFO, &data, sizeof (data)); | |
9937 | } | |
9938 | ||
7c76fa91 | 9939 | char * |
217aa764 AM |
9940 | elfcore_write_prstatus (bfd *abfd, |
9941 | char *buf, | |
9942 | int *bufsiz, | |
9943 | long pid, | |
9944 | int cursig, | |
9945 | const void *gregs) | |
7c76fa91 | 9946 | { |
183e98be | 9947 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7c76fa91 | 9948 | |
183e98be AM |
9949 | if (bed->elf_backend_write_core_note != NULL) |
9950 | { | |
9951 | char *ret; | |
9952 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
9953 | NT_PRSTATUS, | |
9954 | pid, cursig, gregs); | |
9955 | if (ret != NULL) | |
9956 | return ret; | |
9957 | } | |
9958 | ||
1f20dca5 | 9959 | #if defined (HAVE_PRSTATUS_T) |
183e98be AM |
9960 | #if defined (HAVE_PRSTATUS32_T) |
9961 | if (bed->s->elfclass == ELFCLASS32) | |
9962 | { | |
9963 | prstatus32_t prstat; | |
9964 | ||
9965 | memset (&prstat, 0, sizeof (prstat)); | |
9966 | prstat.pr_pid = pid; | |
9967 | prstat.pr_cursig = cursig; | |
9968 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
1f20dca5 | 9969 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", |
183e98be AM |
9970 | NT_PRSTATUS, &prstat, sizeof (prstat)); |
9971 | } | |
9972 | else | |
9973 | #endif | |
9974 | { | |
9975 | prstatus_t prstat; | |
9976 | ||
9977 | memset (&prstat, 0, sizeof (prstat)); | |
9978 | prstat.pr_pid = pid; | |
9979 | prstat.pr_cursig = cursig; | |
9980 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
1f20dca5 | 9981 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", |
183e98be AM |
9982 | NT_PRSTATUS, &prstat, sizeof (prstat)); |
9983 | } | |
7c76fa91 MS |
9984 | #endif /* HAVE_PRSTATUS_T */ |
9985 | ||
1f20dca5 UW |
9986 | free (buf); |
9987 | return NULL; | |
9988 | } | |
9989 | ||
51316059 MS |
9990 | #if defined (HAVE_LWPSTATUS_T) |
9991 | char * | |
217aa764 AM |
9992 | elfcore_write_lwpstatus (bfd *abfd, |
9993 | char *buf, | |
9994 | int *bufsiz, | |
9995 | long pid, | |
9996 | int cursig, | |
9997 | const void *gregs) | |
51316059 MS |
9998 | { |
9999 | lwpstatus_t lwpstat; | |
183e98be | 10000 | const char *note_name = "CORE"; |
51316059 MS |
10001 | |
10002 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
10003 | lwpstat.pr_lwpid = pid >> 16; | |
10004 | lwpstat.pr_cursig = cursig; | |
10005 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
d1e8523e | 10006 | memcpy (&lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); |
51316059 MS |
10007 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) |
10008 | #if !defined(gregs) | |
10009 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
10010 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
10011 | #else | |
10012 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
10013 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
10014 | #endif | |
10015 | #endif | |
47d9a591 | 10016 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
10017 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
10018 | } | |
10019 | #endif /* HAVE_LWPSTATUS_T */ | |
10020 | ||
7c76fa91 MS |
10021 | #if defined (HAVE_PSTATUS_T) |
10022 | char * | |
217aa764 AM |
10023 | elfcore_write_pstatus (bfd *abfd, |
10024 | char *buf, | |
10025 | int *bufsiz, | |
10026 | long pid, | |
6c10990d NC |
10027 | int cursig ATTRIBUTE_UNUSED, |
10028 | const void *gregs ATTRIBUTE_UNUSED) | |
7c76fa91 | 10029 | { |
183e98be AM |
10030 | const char *note_name = "CORE"; |
10031 | #if defined (HAVE_PSTATUS32_T) | |
10032 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 10033 | |
183e98be AM |
10034 | if (bed->s->elfclass == ELFCLASS32) |
10035 | { | |
10036 | pstatus32_t pstat; | |
10037 | ||
10038 | memset (&pstat, 0, sizeof (pstat)); | |
10039 | pstat.pr_pid = pid & 0xffff; | |
10040 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
10041 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
10042 | return buf; | |
10043 | } | |
10044 | else | |
10045 | #endif | |
10046 | { | |
10047 | pstatus_t pstat; | |
10048 | ||
10049 | memset (&pstat, 0, sizeof (pstat)); | |
10050 | pstat.pr_pid = pid & 0xffff; | |
10051 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
10052 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
10053 | return buf; | |
10054 | } | |
7c76fa91 MS |
10055 | } |
10056 | #endif /* HAVE_PSTATUS_T */ | |
10057 | ||
10058 | char * | |
217aa764 AM |
10059 | elfcore_write_prfpreg (bfd *abfd, |
10060 | char *buf, | |
10061 | int *bufsiz, | |
10062 | const void *fpregs, | |
10063 | int size) | |
7c76fa91 | 10064 | { |
183e98be | 10065 | const char *note_name = "CORE"; |
47d9a591 | 10066 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
10067 | note_name, NT_FPREGSET, fpregs, size); |
10068 | } | |
10069 | ||
10070 | char * | |
217aa764 AM |
10071 | elfcore_write_prxfpreg (bfd *abfd, |
10072 | char *buf, | |
10073 | int *bufsiz, | |
10074 | const void *xfpregs, | |
10075 | int size) | |
7c76fa91 MS |
10076 | { |
10077 | char *note_name = "LINUX"; | |
47d9a591 | 10078 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
10079 | note_name, NT_PRXFPREG, xfpregs, size); |
10080 | } | |
10081 | ||
4339cae0 L |
10082 | char * |
10083 | elfcore_write_xstatereg (bfd *abfd, char *buf, int *bufsiz, | |
10084 | const void *xfpregs, int size) | |
10085 | { | |
97de3545 JB |
10086 | char *note_name; |
10087 | if (get_elf_backend_data (abfd)->elf_osabi == ELFOSABI_FREEBSD) | |
10088 | note_name = "FreeBSD"; | |
10089 | else | |
10090 | note_name = "LINUX"; | |
4339cae0 L |
10091 | return elfcore_write_note (abfd, buf, bufsiz, |
10092 | note_name, NT_X86_XSTATE, xfpregs, size); | |
10093 | } | |
10094 | ||
97753bd5 AM |
10095 | char * |
10096 | elfcore_write_ppc_vmx (bfd *abfd, | |
10097 | char *buf, | |
10098 | int *bufsiz, | |
10099 | const void *ppc_vmx, | |
10100 | int size) | |
10101 | { | |
10102 | char *note_name = "LINUX"; | |
10103 | return elfcore_write_note (abfd, buf, bufsiz, | |
10104 | note_name, NT_PPC_VMX, ppc_vmx, size); | |
10105 | } | |
10106 | ||
89eeb0bc LM |
10107 | char * |
10108 | elfcore_write_ppc_vsx (bfd *abfd, | |
10109 | char *buf, | |
10110 | int *bufsiz, | |
10111 | const void *ppc_vsx, | |
10112 | int size) | |
10113 | { | |
10114 | char *note_name = "LINUX"; | |
10115 | return elfcore_write_note (abfd, buf, bufsiz, | |
10116 | note_name, NT_PPC_VSX, ppc_vsx, size); | |
10117 | } | |
10118 | ||
0675e188 UW |
10119 | static char * |
10120 | elfcore_write_s390_high_gprs (bfd *abfd, | |
10121 | char *buf, | |
10122 | int *bufsiz, | |
10123 | const void *s390_high_gprs, | |
10124 | int size) | |
10125 | { | |
10126 | char *note_name = "LINUX"; | |
10127 | return elfcore_write_note (abfd, buf, bufsiz, | |
10128 | note_name, NT_S390_HIGH_GPRS, | |
10129 | s390_high_gprs, size); | |
10130 | } | |
10131 | ||
d7eeb400 MS |
10132 | char * |
10133 | elfcore_write_s390_timer (bfd *abfd, | |
10134 | char *buf, | |
10135 | int *bufsiz, | |
10136 | const void *s390_timer, | |
10137 | int size) | |
10138 | { | |
10139 | char *note_name = "LINUX"; | |
10140 | return elfcore_write_note (abfd, buf, bufsiz, | |
10141 | note_name, NT_S390_TIMER, s390_timer, size); | |
10142 | } | |
10143 | ||
10144 | char * | |
10145 | elfcore_write_s390_todcmp (bfd *abfd, | |
10146 | char *buf, | |
10147 | int *bufsiz, | |
10148 | const void *s390_todcmp, | |
10149 | int size) | |
10150 | { | |
10151 | char *note_name = "LINUX"; | |
10152 | return elfcore_write_note (abfd, buf, bufsiz, | |
10153 | note_name, NT_S390_TODCMP, s390_todcmp, size); | |
10154 | } | |
10155 | ||
10156 | char * | |
10157 | elfcore_write_s390_todpreg (bfd *abfd, | |
10158 | char *buf, | |
10159 | int *bufsiz, | |
10160 | const void *s390_todpreg, | |
10161 | int size) | |
10162 | { | |
10163 | char *note_name = "LINUX"; | |
10164 | return elfcore_write_note (abfd, buf, bufsiz, | |
10165 | note_name, NT_S390_TODPREG, s390_todpreg, size); | |
10166 | } | |
10167 | ||
10168 | char * | |
10169 | elfcore_write_s390_ctrs (bfd *abfd, | |
10170 | char *buf, | |
10171 | int *bufsiz, | |
10172 | const void *s390_ctrs, | |
10173 | int size) | |
10174 | { | |
10175 | char *note_name = "LINUX"; | |
10176 | return elfcore_write_note (abfd, buf, bufsiz, | |
10177 | note_name, NT_S390_CTRS, s390_ctrs, size); | |
10178 | } | |
10179 | ||
10180 | char * | |
10181 | elfcore_write_s390_prefix (bfd *abfd, | |
10182 | char *buf, | |
10183 | int *bufsiz, | |
10184 | const void *s390_prefix, | |
10185 | int size) | |
10186 | { | |
10187 | char *note_name = "LINUX"; | |
10188 | return elfcore_write_note (abfd, buf, bufsiz, | |
10189 | note_name, NT_S390_PREFIX, s390_prefix, size); | |
10190 | } | |
10191 | ||
355b81d9 UW |
10192 | char * |
10193 | elfcore_write_s390_last_break (bfd *abfd, | |
10194 | char *buf, | |
10195 | int *bufsiz, | |
10196 | const void *s390_last_break, | |
10197 | int size) | |
10198 | { | |
10199 | char *note_name = "LINUX"; | |
10200 | return elfcore_write_note (abfd, buf, bufsiz, | |
10201 | note_name, NT_S390_LAST_BREAK, | |
10202 | s390_last_break, size); | |
10203 | } | |
10204 | ||
10205 | char * | |
10206 | elfcore_write_s390_system_call (bfd *abfd, | |
10207 | char *buf, | |
10208 | int *bufsiz, | |
10209 | const void *s390_system_call, | |
10210 | int size) | |
10211 | { | |
10212 | char *note_name = "LINUX"; | |
10213 | return elfcore_write_note (abfd, buf, bufsiz, | |
10214 | note_name, NT_S390_SYSTEM_CALL, | |
10215 | s390_system_call, size); | |
10216 | } | |
10217 | ||
abb3f6cc NC |
10218 | char * |
10219 | elfcore_write_s390_tdb (bfd *abfd, | |
10220 | char *buf, | |
10221 | int *bufsiz, | |
10222 | const void *s390_tdb, | |
10223 | int size) | |
10224 | { | |
10225 | char *note_name = "LINUX"; | |
10226 | return elfcore_write_note (abfd, buf, bufsiz, | |
10227 | note_name, NT_S390_TDB, s390_tdb, size); | |
10228 | } | |
10229 | ||
4ef9f41a AA |
10230 | char * |
10231 | elfcore_write_s390_vxrs_low (bfd *abfd, | |
10232 | char *buf, | |
10233 | int *bufsiz, | |
10234 | const void *s390_vxrs_low, | |
10235 | int size) | |
10236 | { | |
10237 | char *note_name = "LINUX"; | |
10238 | return elfcore_write_note (abfd, buf, bufsiz, | |
10239 | note_name, NT_S390_VXRS_LOW, s390_vxrs_low, size); | |
10240 | } | |
10241 | ||
10242 | char * | |
10243 | elfcore_write_s390_vxrs_high (bfd *abfd, | |
10244 | char *buf, | |
10245 | int *bufsiz, | |
10246 | const void *s390_vxrs_high, | |
10247 | int size) | |
10248 | { | |
10249 | char *note_name = "LINUX"; | |
10250 | return elfcore_write_note (abfd, buf, bufsiz, | |
10251 | note_name, NT_S390_VXRS_HIGH, | |
10252 | s390_vxrs_high, size); | |
10253 | } | |
10254 | ||
faa9a424 UW |
10255 | char * |
10256 | elfcore_write_arm_vfp (bfd *abfd, | |
10257 | char *buf, | |
10258 | int *bufsiz, | |
10259 | const void *arm_vfp, | |
10260 | int size) | |
10261 | { | |
10262 | char *note_name = "LINUX"; | |
10263 | return elfcore_write_note (abfd, buf, bufsiz, | |
10264 | note_name, NT_ARM_VFP, arm_vfp, size); | |
10265 | } | |
10266 | ||
652451f8 YZ |
10267 | char * |
10268 | elfcore_write_aarch_tls (bfd *abfd, | |
10269 | char *buf, | |
10270 | int *bufsiz, | |
10271 | const void *aarch_tls, | |
10272 | int size) | |
10273 | { | |
10274 | char *note_name = "LINUX"; | |
10275 | return elfcore_write_note (abfd, buf, bufsiz, | |
10276 | note_name, NT_ARM_TLS, aarch_tls, size); | |
10277 | } | |
10278 | ||
10279 | char * | |
10280 | elfcore_write_aarch_hw_break (bfd *abfd, | |
10281 | char *buf, | |
10282 | int *bufsiz, | |
10283 | const void *aarch_hw_break, | |
10284 | int size) | |
10285 | { | |
10286 | char *note_name = "LINUX"; | |
10287 | return elfcore_write_note (abfd, buf, bufsiz, | |
10288 | note_name, NT_ARM_HW_BREAK, aarch_hw_break, size); | |
10289 | } | |
10290 | ||
10291 | char * | |
10292 | elfcore_write_aarch_hw_watch (bfd *abfd, | |
10293 | char *buf, | |
10294 | int *bufsiz, | |
10295 | const void *aarch_hw_watch, | |
10296 | int size) | |
10297 | { | |
10298 | char *note_name = "LINUX"; | |
10299 | return elfcore_write_note (abfd, buf, bufsiz, | |
10300 | note_name, NT_ARM_HW_WATCH, aarch_hw_watch, size); | |
10301 | } | |
10302 | ||
bb864ac1 CES |
10303 | char * |
10304 | elfcore_write_register_note (bfd *abfd, | |
10305 | char *buf, | |
10306 | int *bufsiz, | |
10307 | const char *section, | |
10308 | const void *data, | |
10309 | int size) | |
10310 | { | |
10311 | if (strcmp (section, ".reg2") == 0) | |
10312 | return elfcore_write_prfpreg (abfd, buf, bufsiz, data, size); | |
10313 | if (strcmp (section, ".reg-xfp") == 0) | |
10314 | return elfcore_write_prxfpreg (abfd, buf, bufsiz, data, size); | |
4339cae0 L |
10315 | if (strcmp (section, ".reg-xstate") == 0) |
10316 | return elfcore_write_xstatereg (abfd, buf, bufsiz, data, size); | |
bb864ac1 CES |
10317 | if (strcmp (section, ".reg-ppc-vmx") == 0) |
10318 | return elfcore_write_ppc_vmx (abfd, buf, bufsiz, data, size); | |
89eeb0bc LM |
10319 | if (strcmp (section, ".reg-ppc-vsx") == 0) |
10320 | return elfcore_write_ppc_vsx (abfd, buf, bufsiz, data, size); | |
0675e188 UW |
10321 | if (strcmp (section, ".reg-s390-high-gprs") == 0) |
10322 | return elfcore_write_s390_high_gprs (abfd, buf, bufsiz, data, size); | |
d7eeb400 MS |
10323 | if (strcmp (section, ".reg-s390-timer") == 0) |
10324 | return elfcore_write_s390_timer (abfd, buf, bufsiz, data, size); | |
10325 | if (strcmp (section, ".reg-s390-todcmp") == 0) | |
10326 | return elfcore_write_s390_todcmp (abfd, buf, bufsiz, data, size); | |
10327 | if (strcmp (section, ".reg-s390-todpreg") == 0) | |
10328 | return elfcore_write_s390_todpreg (abfd, buf, bufsiz, data, size); | |
10329 | if (strcmp (section, ".reg-s390-ctrs") == 0) | |
10330 | return elfcore_write_s390_ctrs (abfd, buf, bufsiz, data, size); | |
10331 | if (strcmp (section, ".reg-s390-prefix") == 0) | |
10332 | return elfcore_write_s390_prefix (abfd, buf, bufsiz, data, size); | |
355b81d9 UW |
10333 | if (strcmp (section, ".reg-s390-last-break") == 0) |
10334 | return elfcore_write_s390_last_break (abfd, buf, bufsiz, data, size); | |
10335 | if (strcmp (section, ".reg-s390-system-call") == 0) | |
10336 | return elfcore_write_s390_system_call (abfd, buf, bufsiz, data, size); | |
abb3f6cc NC |
10337 | if (strcmp (section, ".reg-s390-tdb") == 0) |
10338 | return elfcore_write_s390_tdb (abfd, buf, bufsiz, data, size); | |
4ef9f41a AA |
10339 | if (strcmp (section, ".reg-s390-vxrs-low") == 0) |
10340 | return elfcore_write_s390_vxrs_low (abfd, buf, bufsiz, data, size); | |
10341 | if (strcmp (section, ".reg-s390-vxrs-high") == 0) | |
10342 | return elfcore_write_s390_vxrs_high (abfd, buf, bufsiz, data, size); | |
faa9a424 UW |
10343 | if (strcmp (section, ".reg-arm-vfp") == 0) |
10344 | return elfcore_write_arm_vfp (abfd, buf, bufsiz, data, size); | |
652451f8 YZ |
10345 | if (strcmp (section, ".reg-aarch-tls") == 0) |
10346 | return elfcore_write_aarch_tls (abfd, buf, bufsiz, data, size); | |
10347 | if (strcmp (section, ".reg-aarch-hw-break") == 0) | |
10348 | return elfcore_write_aarch_hw_break (abfd, buf, bufsiz, data, size); | |
10349 | if (strcmp (section, ".reg-aarch-hw-watch") == 0) | |
10350 | return elfcore_write_aarch_hw_watch (abfd, buf, bufsiz, data, size); | |
bb864ac1 CES |
10351 | return NULL; |
10352 | } | |
10353 | ||
b34976b6 | 10354 | static bfd_boolean |
718175fa | 10355 | elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset) |
252b5132 | 10356 | { |
c044fabd | 10357 | char *p; |
252b5132 | 10358 | |
252b5132 RH |
10359 | p = buf; |
10360 | while (p < buf + size) | |
10361 | { | |
c044fabd KH |
10362 | /* FIXME: bad alignment assumption. */ |
10363 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
10364 | Elf_Internal_Note in; |
10365 | ||
baea7ef1 AM |
10366 | if (offsetof (Elf_External_Note, name) > buf - p + size) |
10367 | return FALSE; | |
10368 | ||
dc810e39 | 10369 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 10370 | |
dc810e39 | 10371 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 | 10372 | in.namedata = xnp->name; |
baea7ef1 AM |
10373 | if (in.namesz > buf - in.namedata + size) |
10374 | return FALSE; | |
252b5132 | 10375 | |
dc810e39 | 10376 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
10377 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
10378 | in.descpos = offset + (in.descdata - buf); | |
baea7ef1 AM |
10379 | if (in.descsz != 0 |
10380 | && (in.descdata >= buf + size | |
10381 | || in.descsz > buf - in.descdata + size)) | |
10382 | return FALSE; | |
252b5132 | 10383 | |
718175fa JK |
10384 | switch (bfd_get_format (abfd)) |
10385 | { | |
10386 | default: | |
10387 | return TRUE; | |
10388 | ||
10389 | case bfd_core: | |
f64e188b | 10390 | { |
8acbedd6 | 10391 | #define GROKER_ELEMENT(S,F) {S, sizeof (S) - 1, F} |
f64e188b | 10392 | struct |
718175fa | 10393 | { |
f64e188b | 10394 | const char * string; |
8acbedd6 | 10395 | size_t len; |
f64e188b | 10396 | bfd_boolean (* func)(bfd *, Elf_Internal_Note *); |
718175fa | 10397 | } |
f64e188b | 10398 | grokers[] = |
b15fa79e | 10399 | { |
8acbedd6 KS |
10400 | GROKER_ELEMENT ("", elfcore_grok_note), |
10401 | GROKER_ELEMENT ("NetBSD-CORE", elfcore_grok_netbsd_note), | |
10402 | GROKER_ELEMENT ( "OpenBSD", elfcore_grok_openbsd_note), | |
10403 | GROKER_ELEMENT ("QNX", elfcore_grok_nto_note), | |
10404 | GROKER_ELEMENT ("SPU/", elfcore_grok_spu_note) | |
f64e188b | 10405 | }; |
8acbedd6 | 10406 | #undef GROKER_ELEMENT |
f64e188b NC |
10407 | int i; |
10408 | ||
10409 | for (i = ARRAY_SIZE (grokers); i--;) | |
8acbedd6 KS |
10410 | { |
10411 | if (in.namesz >= grokers[i].len | |
10412 | && strncmp (in.namedata, grokers[i].string, | |
10413 | grokers[i].len) == 0) | |
10414 | { | |
10415 | if (! grokers[i].func (abfd, & in)) | |
10416 | return FALSE; | |
10417 | break; | |
10418 | } | |
10419 | } | |
f64e188b NC |
10420 | break; |
10421 | } | |
718175fa JK |
10422 | |
10423 | case bfd_object: | |
10424 | if (in.namesz == sizeof "GNU" && strcmp (in.namedata, "GNU") == 0) | |
10425 | { | |
10426 | if (! elfobj_grok_gnu_note (abfd, &in)) | |
10427 | return FALSE; | |
10428 | } | |
e21e5835 NC |
10429 | else if (in.namesz == sizeof "stapsdt" |
10430 | && strcmp (in.namedata, "stapsdt") == 0) | |
10431 | { | |
10432 | if (! elfobj_grok_stapsdt_note (abfd, &in)) | |
10433 | return FALSE; | |
10434 | } | |
718175fa | 10435 | break; |
08a40648 | 10436 | } |
252b5132 RH |
10437 | |
10438 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
10439 | } | |
10440 | ||
718175fa JK |
10441 | return TRUE; |
10442 | } | |
10443 | ||
10444 | static bfd_boolean | |
10445 | elf_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) | |
10446 | { | |
10447 | char *buf; | |
10448 | ||
10449 | if (size <= 0) | |
10450 | return TRUE; | |
10451 | ||
10452 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) | |
10453 | return FALSE; | |
10454 | ||
f64e188b | 10455 | buf = (char *) bfd_malloc (size + 1); |
718175fa JK |
10456 | if (buf == NULL) |
10457 | return FALSE; | |
10458 | ||
f64e188b NC |
10459 | /* PR 17512: file: ec08f814 |
10460 | 0-termintate the buffer so that string searches will not overflow. */ | |
10461 | buf[size] = 0; | |
10462 | ||
718175fa JK |
10463 | if (bfd_bread (buf, size, abfd) != size |
10464 | || !elf_parse_notes (abfd, buf, size, offset)) | |
10465 | { | |
10466 | free (buf); | |
10467 | return FALSE; | |
10468 | } | |
10469 | ||
252b5132 | 10470 | free (buf); |
b34976b6 | 10471 | return TRUE; |
252b5132 | 10472 | } |
98d8431c JB |
10473 | \f |
10474 | /* Providing external access to the ELF program header table. */ | |
10475 | ||
10476 | /* Return an upper bound on the number of bytes required to store a | |
10477 | copy of ABFD's program header table entries. Return -1 if an error | |
10478 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 10479 | |
98d8431c | 10480 | long |
217aa764 | 10481 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
10482 | { |
10483 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
10484 | { | |
10485 | bfd_set_error (bfd_error_wrong_format); | |
10486 | return -1; | |
10487 | } | |
10488 | ||
936e320b | 10489 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
10490 | } |
10491 | ||
98d8431c JB |
10492 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
10493 | will be stored as an array of Elf_Internal_Phdr structures, as | |
10494 | defined in include/elf/internal.h. To find out how large the | |
10495 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
10496 | ||
10497 | Return the number of program header table entries read, or -1 if an | |
10498 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 10499 | |
98d8431c | 10500 | int |
217aa764 | 10501 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
10502 | { |
10503 | int num_phdrs; | |
10504 | ||
10505 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
10506 | { | |
10507 | bfd_set_error (bfd_error_wrong_format); | |
10508 | return -1; | |
10509 | } | |
10510 | ||
10511 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 10512 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
10513 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
10514 | ||
10515 | return num_phdrs; | |
10516 | } | |
ae4221d7 | 10517 | |
db6751f2 | 10518 | enum elf_reloc_type_class |
7e612e98 AM |
10519 | _bfd_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
10520 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
10521 | const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) | |
db6751f2 JJ |
10522 | { |
10523 | return reloc_class_normal; | |
10524 | } | |
f8df10f4 | 10525 | |
47d9a591 | 10526 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
10527 | relocation against a local symbol. */ |
10528 | ||
10529 | bfd_vma | |
217aa764 AM |
10530 | _bfd_elf_rela_local_sym (bfd *abfd, |
10531 | Elf_Internal_Sym *sym, | |
8517fae7 | 10532 | asection **psec, |
217aa764 | 10533 | Elf_Internal_Rela *rel) |
f8df10f4 | 10534 | { |
8517fae7 | 10535 | asection *sec = *psec; |
f8df10f4 JJ |
10536 | bfd_vma relocation; |
10537 | ||
10538 | relocation = (sec->output_section->vma | |
10539 | + sec->output_offset | |
10540 | + sym->st_value); | |
10541 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 10542 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
dbaa2011 | 10543 | && sec->sec_info_type == SEC_INFO_TYPE_MERGE) |
f8df10f4 | 10544 | { |
f8df10f4 | 10545 | rel->r_addend = |
8517fae7 | 10546 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 10547 | elf_section_data (sec)->sec_info, |
753731ee AM |
10548 | sym->st_value + rel->r_addend); |
10549 | if (sec != *psec) | |
10550 | { | |
10551 | /* If we have changed the section, and our original section is | |
10552 | marked with SEC_EXCLUDE, it means that the original | |
10553 | SEC_MERGE section has been completely subsumed in some | |
10554 | other SEC_MERGE section. In this case, we need to leave | |
10555 | some info around for --emit-relocs. */ | |
10556 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
10557 | sec->kept_section = *psec; | |
10558 | sec = *psec; | |
10559 | } | |
8517fae7 AM |
10560 | rel->r_addend -= relocation; |
10561 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
10562 | } |
10563 | return relocation; | |
10564 | } | |
c629eae0 JJ |
10565 | |
10566 | bfd_vma | |
217aa764 AM |
10567 | _bfd_elf_rel_local_sym (bfd *abfd, |
10568 | Elf_Internal_Sym *sym, | |
10569 | asection **psec, | |
10570 | bfd_vma addend) | |
47d9a591 | 10571 | { |
c629eae0 JJ |
10572 | asection *sec = *psec; |
10573 | ||
dbaa2011 | 10574 | if (sec->sec_info_type != SEC_INFO_TYPE_MERGE) |
c629eae0 JJ |
10575 | return sym->st_value + addend; |
10576 | ||
10577 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 10578 | elf_section_data (sec)->sec_info, |
753731ee | 10579 | sym->st_value + addend); |
c629eae0 JJ |
10580 | } |
10581 | ||
37b01f6a DG |
10582 | /* Adjust an address within a section. Given OFFSET within SEC, return |
10583 | the new offset within the section, based upon changes made to the | |
10584 | section. Returns -1 if the offset is now invalid. | |
10585 | The offset (in abnd out) is in target sized bytes, however big a | |
10586 | byte may be. */ | |
10587 | ||
c629eae0 | 10588 | bfd_vma |
217aa764 | 10589 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 10590 | struct bfd_link_info *info, |
217aa764 AM |
10591 | asection *sec, |
10592 | bfd_vma offset) | |
c629eae0 | 10593 | { |
68bfbfcc | 10594 | switch (sec->sec_info_type) |
65765700 | 10595 | { |
dbaa2011 | 10596 | case SEC_INFO_TYPE_STABS: |
eea6121a AM |
10597 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
10598 | offset); | |
dbaa2011 | 10599 | case SEC_INFO_TYPE_EH_FRAME: |
92e4ec35 | 10600 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
37b01f6a | 10601 | |
65765700 | 10602 | default: |
310fd250 L |
10603 | if ((sec->flags & SEC_ELF_REVERSE_COPY) != 0) |
10604 | { | |
37b01f6a | 10605 | /* Reverse the offset. */ |
310fd250 L |
10606 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
10607 | bfd_size_type address_size = bed->s->arch_size / 8; | |
37b01f6a DG |
10608 | |
10609 | /* address_size and sec->size are in octets. Convert | |
10610 | to bytes before subtracting the original offset. */ | |
10611 | offset = (sec->size - address_size) / bfd_octets_per_byte (abfd) - offset; | |
310fd250 | 10612 | } |
65765700 JJ |
10613 | return offset; |
10614 | } | |
c629eae0 | 10615 | } |
3333a7c3 RM |
10616 | \f |
10617 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
10618 | reconstruct an ELF file by reading the segments out of remote memory | |
10619 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
10620 | points to. If not null, *LOADBASEP is filled in with the difference | |
10621 | between the VMAs from which the segments were read, and the VMAs the | |
10622 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
10623 | ||
10624 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
10625 | remote memory at target address VMA into the local buffer at MYADDR; it | |
10626 | should return zero on success or an `errno' code on failure. TEMPL must | |
10627 | be a BFD for an ELF target with the word size and byte order found in | |
10628 | the remote memory. */ | |
10629 | ||
10630 | bfd * | |
217aa764 AM |
10631 | bfd_elf_bfd_from_remote_memory |
10632 | (bfd *templ, | |
10633 | bfd_vma ehdr_vma, | |
f0a5d95a | 10634 | bfd_size_type size, |
217aa764 | 10635 | bfd_vma *loadbasep, |
fe78531d | 10636 | int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type)) |
3333a7c3 RM |
10637 | { |
10638 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
5979d6b6 | 10639 | (templ, ehdr_vma, size, loadbasep, target_read_memory); |
3333a7c3 | 10640 | } |
4c45e5c9 JJ |
10641 | \f |
10642 | long | |
c9727e01 AM |
10643 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
10644 | long symcount ATTRIBUTE_UNUSED, | |
10645 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 10646 | long dynsymcount, |
c9727e01 AM |
10647 | asymbol **dynsyms, |
10648 | asymbol **ret) | |
4c45e5c9 JJ |
10649 | { |
10650 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
10651 | asection *relplt; | |
10652 | asymbol *s; | |
10653 | const char *relplt_name; | |
10654 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
10655 | arelent *p; | |
10656 | long count, i, n; | |
10657 | size_t size; | |
10658 | Elf_Internal_Shdr *hdr; | |
10659 | char *names; | |
10660 | asection *plt; | |
10661 | ||
8615f3f2 AM |
10662 | *ret = NULL; |
10663 | ||
90e3cdf2 JJ |
10664 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
10665 | return 0; | |
10666 | ||
8615f3f2 AM |
10667 | if (dynsymcount <= 0) |
10668 | return 0; | |
10669 | ||
4c45e5c9 JJ |
10670 | if (!bed->plt_sym_val) |
10671 | return 0; | |
10672 | ||
10673 | relplt_name = bed->relplt_name; | |
10674 | if (relplt_name == NULL) | |
d35fd659 | 10675 | relplt_name = bed->rela_plts_and_copies_p ? ".rela.plt" : ".rel.plt"; |
4c45e5c9 JJ |
10676 | relplt = bfd_get_section_by_name (abfd, relplt_name); |
10677 | if (relplt == NULL) | |
10678 | return 0; | |
10679 | ||
10680 | hdr = &elf_section_data (relplt)->this_hdr; | |
10681 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
10682 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
10683 | return 0; | |
10684 | ||
10685 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
10686 | if (plt == NULL) | |
10687 | return 0; | |
10688 | ||
10689 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 10690 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
10691 | return -1; |
10692 | ||
eea6121a | 10693 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
10694 | size = count * sizeof (asymbol); |
10695 | p = relplt->relocation; | |
cb53bf42 | 10696 | for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel) |
041de40d AM |
10697 | { |
10698 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
10699 | if (p->addend != 0) | |
10700 | { | |
10701 | #ifdef BFD64 | |
10702 | size += sizeof ("+0x") - 1 + 8 + 8 * (bed->s->elfclass == ELFCLASS64); | |
10703 | #else | |
10704 | size += sizeof ("+0x") - 1 + 8; | |
10705 | #endif | |
10706 | } | |
10707 | } | |
4c45e5c9 | 10708 | |
a50b1753 | 10709 | s = *ret = (asymbol *) bfd_malloc (size); |
4c45e5c9 JJ |
10710 | if (s == NULL) |
10711 | return -1; | |
10712 | ||
10713 | names = (char *) (s + count); | |
10714 | p = relplt->relocation; | |
10715 | n = 0; | |
cb53bf42 | 10716 | for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel) |
4c45e5c9 JJ |
10717 | { |
10718 | size_t len; | |
10719 | bfd_vma addr; | |
10720 | ||
10721 | addr = bed->plt_sym_val (i, plt, p); | |
10722 | if (addr == (bfd_vma) -1) | |
10723 | continue; | |
10724 | ||
10725 | *s = **p->sym_ptr_ptr; | |
65a7a66f AM |
10726 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since |
10727 | we are defining a symbol, ensure one of them is set. */ | |
10728 | if ((s->flags & BSF_LOCAL) == 0) | |
10729 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 10730 | s->flags |= BSF_SYNTHETIC; |
4c45e5c9 JJ |
10731 | s->section = plt; |
10732 | s->value = addr - plt->vma; | |
10733 | s->name = names; | |
8f39ba8e | 10734 | s->udata.p = NULL; |
4c45e5c9 JJ |
10735 | len = strlen ((*p->sym_ptr_ptr)->name); |
10736 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
10737 | names += len; | |
041de40d AM |
10738 | if (p->addend != 0) |
10739 | { | |
1d770845 | 10740 | char buf[30], *a; |
d324f6d6 | 10741 | |
041de40d AM |
10742 | memcpy (names, "+0x", sizeof ("+0x") - 1); |
10743 | names += sizeof ("+0x") - 1; | |
1d770845 L |
10744 | bfd_sprintf_vma (abfd, buf, p->addend); |
10745 | for (a = buf; *a == '0'; ++a) | |
10746 | ; | |
10747 | len = strlen (a); | |
10748 | memcpy (names, a, len); | |
10749 | names += len; | |
041de40d | 10750 | } |
4c45e5c9 JJ |
10751 | memcpy (names, "@plt", sizeof ("@plt")); |
10752 | names += sizeof ("@plt"); | |
8f39ba8e | 10753 | ++s, ++n; |
4c45e5c9 JJ |
10754 | } |
10755 | ||
10756 | return n; | |
10757 | } | |
3d7f7666 | 10758 | |
3b22753a L |
10759 | /* It is only used by x86-64 so far. */ |
10760 | asection _bfd_elf_large_com_section | |
10761 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, | |
f592407e | 10762 | SEC_IS_COMMON, NULL, "LARGE_COMMON", 0); |
ecca9871 | 10763 | |
d1036acb | 10764 | void |
78245035 L |
10765 | _bfd_elf_post_process_headers (bfd * abfd, |
10766 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
d1036acb L |
10767 | { |
10768 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
10769 | ||
10770 | i_ehdrp = elf_elfheader (abfd); | |
10771 | ||
10772 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
d8045f23 NC |
10773 | |
10774 | /* To make things simpler for the loader on Linux systems we set the | |
9c55345c | 10775 | osabi field to ELFOSABI_GNU if the binary contains symbols of |
f64b2e8d | 10776 | the STT_GNU_IFUNC type or STB_GNU_UNIQUE binding. */ |
d8045f23 | 10777 | if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE |
f64b2e8d | 10778 | && elf_tdata (abfd)->has_gnu_symbols) |
9c55345c | 10779 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_GNU; |
d1036acb | 10780 | } |
fcb93ecf PB |
10781 | |
10782 | ||
10783 | /* Return TRUE for ELF symbol types that represent functions. | |
10784 | This is the default version of this function, which is sufficient for | |
d8045f23 | 10785 | most targets. It returns true if TYPE is STT_FUNC or STT_GNU_IFUNC. */ |
fcb93ecf PB |
10786 | |
10787 | bfd_boolean | |
10788 | _bfd_elf_is_function_type (unsigned int type) | |
10789 | { | |
d8045f23 NC |
10790 | return (type == STT_FUNC |
10791 | || type == STT_GNU_IFUNC); | |
fcb93ecf | 10792 | } |
9f296da3 | 10793 | |
aef36ac1 AM |
10794 | /* If the ELF symbol SYM might be a function in SEC, return the |
10795 | function size and set *CODE_OFF to the function's entry point, | |
10796 | otherwise return zero. */ | |
9f296da3 | 10797 | |
aef36ac1 AM |
10798 | bfd_size_type |
10799 | _bfd_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
10800 | bfd_vma *code_off) | |
9f296da3 | 10801 | { |
aef36ac1 AM |
10802 | bfd_size_type size; |
10803 | ||
ff9e0f5b | 10804 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT |
aef36ac1 AM |
10805 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0 |
10806 | || sym->section != sec) | |
10807 | return 0; | |
ff9e0f5b | 10808 | |
ff9e0f5b | 10809 | *code_off = sym->value; |
aef36ac1 AM |
10810 | size = 0; |
10811 | if (!(sym->flags & BSF_SYNTHETIC)) | |
10812 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
10813 | if (size == 0) | |
10814 | size = 1; | |
10815 | return size; | |
9f296da3 | 10816 | } |