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Commit | Line | Data |
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252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 | 2 | |
250d07de | 3 | Copyright (C) 1993-2021 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" |
3a551c7a | 38 | #include <limits.h> |
3db64b00 | 39 | #include "bfd.h" |
252b5132 RH |
40 | #include "bfdlink.h" |
41 | #include "libbfd.h" | |
42 | #define ARCH_SIZE 0 | |
43 | #include "elf-bfd.h" | |
e0e8c97f | 44 | #include "libiberty.h" |
ff59fc36 | 45 | #include "safe-ctype.h" |
de64ce13 | 46 | #include "elf-linux-core.h" |
252b5132 | 47 | |
8bc7f138 L |
48 | #ifdef CORE_HEADER |
49 | #include CORE_HEADER | |
50 | #endif | |
51 | ||
217aa764 | 52 | static int elf_sort_sections (const void *, const void *); |
0a1b45a2 AM |
53 | static bool assign_file_positions_except_relocs (bfd *, struct bfd_link_info *); |
54 | static bool swap_out_syms (bfd *, struct elf_strtab_hash **, int, | |
55 | struct bfd_link_info *); | |
56 | static bool elf_parse_notes (bfd *abfd, char *buf, size_t size, | |
57 | file_ptr offset, size_t align); | |
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. */ | |
0a1b45a2 | 235 | bool |
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) | |
0a1b45a2 | 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) | |
0a1b45a2 | 250 | return false; |
c0355132 AM |
251 | elf_tdata (abfd)->o = o; |
252 | elf_program_header_size (abfd) = (bfd_size_type) -1; | |
253 | } | |
0a1b45a2 | 254 | return true; |
252b5132 RH |
255 | } |
256 | ||
0ffa91dd | 257 | |
0a1b45a2 | 258 | bool |
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 | ||
0a1b45a2 | 266 | bool |
217aa764 | 267 | bfd_elf_mkcorefile (bfd *abfd) |
252b5132 | 268 | { |
c044fabd | 269 | /* I think this can be done just like an object file. */ |
228e534f | 270 | if (!abfd->xvec->_bfd_set_format[(int) bfd_object] (abfd)) |
0a1b45a2 | 271 | return false; |
228e534f AM |
272 | elf_tdata (abfd)->core = bfd_zalloc (abfd, sizeof (*elf_tdata (abfd)->core)); |
273 | return elf_tdata (abfd)->core != NULL; | |
252b5132 RH |
274 | } |
275 | ||
6d5944fc | 276 | 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 | 300 | || bfd_seek (abfd, offset, SEEK_SET) != 0 |
2bb3687b AM |
301 | || (shstrtab = _bfd_alloc_and_read (abfd, shstrtabsize + 1, |
302 | shstrtabsize)) == NULL) | |
303 | { | |
3471d59d CC |
304 | /* Once we've failed to read it, make sure we don't keep |
305 | trying. Otherwise, we'll keep allocating space for | |
306 | the string table over and over. */ | |
307 | i_shdrp[shindex]->sh_size = 0; | |
c6c60d09 JJ |
308 | } |
309 | else | |
310 | shstrtab[shstrtabsize] = '\0'; | |
217aa764 | 311 | i_shdrp[shindex]->contents = shstrtab; |
252b5132 | 312 | } |
f075ee0c | 313 | return (char *) shstrtab; |
252b5132 RH |
314 | } |
315 | ||
316 | char * | |
217aa764 AM |
317 | bfd_elf_string_from_elf_section (bfd *abfd, |
318 | unsigned int shindex, | |
319 | unsigned int strindex) | |
252b5132 RH |
320 | { |
321 | Elf_Internal_Shdr *hdr; | |
322 | ||
323 | if (strindex == 0) | |
324 | return ""; | |
325 | ||
74f2e02b AM |
326 | if (elf_elfsections (abfd) == NULL || shindex >= elf_numsections (abfd)) |
327 | return NULL; | |
328 | ||
252b5132 RH |
329 | hdr = elf_elfsections (abfd)[shindex]; |
330 | ||
06614111 NC |
331 | if (hdr->contents == NULL) |
332 | { | |
333 | if (hdr->sh_type != SHT_STRTAB && hdr->sh_type < SHT_LOOS) | |
334 | { | |
335 | /* PR 17512: file: f057ec89. */ | |
695344c0 | 336 | /* xgettext:c-format */ |
871b3ab2 | 337 | _bfd_error_handler (_("%pB: attempt to load strings from" |
63a5468a | 338 | " a non-string section (number %d)"), |
06614111 NC |
339 | abfd, shindex); |
340 | return NULL; | |
341 | } | |
b1fa9dd6 | 342 | |
06614111 NC |
343 | if (bfd_elf_get_str_section (abfd, shindex) == NULL) |
344 | return NULL; | |
345 | } | |
eed5def8 NC |
346 | else |
347 | { | |
348 | /* PR 24273: The string section's contents may have already | |
349 | been loaded elsewhere, eg because a corrupt file has the | |
350 | string section index in the ELF header pointing at a group | |
351 | section. So be paranoid, and test that the last byte of | |
352 | the section is zero. */ | |
353 | if (hdr->sh_size == 0 || hdr->contents[hdr->sh_size - 1] != 0) | |
354 | return NULL; | |
355 | } | |
252b5132 RH |
356 | |
357 | if (strindex >= hdr->sh_size) | |
358 | { | |
1b3a8575 | 359 | unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx; |
4eca0228 | 360 | _bfd_error_handler |
695344c0 | 361 | /* xgettext:c-format */ |
2dcf00ce AM |
362 | (_("%pB: invalid string offset %u >= %" PRIu64 " for section `%s'"), |
363 | abfd, strindex, (uint64_t) hdr->sh_size, | |
1b3a8575 | 364 | (shindex == shstrndx && strindex == hdr->sh_name |
252b5132 | 365 | ? ".shstrtab" |
1b3a8575 | 366 | : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name))); |
45b222d6 | 367 | return NULL; |
252b5132 RH |
368 | } |
369 | ||
370 | return ((char *) hdr->contents) + strindex; | |
371 | } | |
372 | ||
6cdc0ccc AM |
373 | /* Read and convert symbols to internal format. |
374 | SYMCOUNT specifies the number of symbols to read, starting from | |
375 | symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF | |
376 | are non-NULL, they are used to store the internal symbols, external | |
b7c368d0 NC |
377 | symbols, and symbol section index extensions, respectively. |
378 | Returns a pointer to the internal symbol buffer (malloced if necessary) | |
379 | or NULL if there were no symbols or some kind of problem. */ | |
6cdc0ccc AM |
380 | |
381 | Elf_Internal_Sym * | |
217aa764 AM |
382 | bfd_elf_get_elf_syms (bfd *ibfd, |
383 | Elf_Internal_Shdr *symtab_hdr, | |
384 | size_t symcount, | |
385 | size_t symoffset, | |
386 | Elf_Internal_Sym *intsym_buf, | |
387 | void *extsym_buf, | |
388 | Elf_External_Sym_Shndx *extshndx_buf) | |
6cdc0ccc AM |
389 | { |
390 | Elf_Internal_Shdr *shndx_hdr; | |
217aa764 | 391 | void *alloc_ext; |
df622259 | 392 | const bfd_byte *esym; |
6cdc0ccc AM |
393 | Elf_External_Sym_Shndx *alloc_extshndx; |
394 | Elf_External_Sym_Shndx *shndx; | |
4dd07732 | 395 | Elf_Internal_Sym *alloc_intsym; |
6cdc0ccc AM |
396 | Elf_Internal_Sym *isym; |
397 | Elf_Internal_Sym *isymend; | |
9c5bfbb7 | 398 | const struct elf_backend_data *bed; |
6cdc0ccc | 399 | size_t extsym_size; |
1f4361a7 | 400 | size_t amt; |
6cdc0ccc AM |
401 | file_ptr pos; |
402 | ||
e44a2c9c AM |
403 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
404 | abort (); | |
405 | ||
6cdc0ccc AM |
406 | if (symcount == 0) |
407 | return intsym_buf; | |
408 | ||
409 | /* Normal syms might have section extension entries. */ | |
410 | shndx_hdr = NULL; | |
6a40cf0c NC |
411 | if (elf_symtab_shndx_list (ibfd) != NULL) |
412 | { | |
413 | elf_section_list * entry; | |
414 | Elf_Internal_Shdr **sections = elf_elfsections (ibfd); | |
415 | ||
416 | /* Find an index section that is linked to this symtab section. */ | |
417 | for (entry = elf_symtab_shndx_list (ibfd); entry != NULL; entry = entry->next) | |
315350be NC |
418 | { |
419 | /* PR 20063. */ | |
420 | if (entry->hdr.sh_link >= elf_numsections (ibfd)) | |
421 | continue; | |
422 | ||
423 | if (sections[entry->hdr.sh_link] == symtab_hdr) | |
424 | { | |
425 | shndx_hdr = & entry->hdr; | |
426 | break; | |
427 | }; | |
428 | } | |
6a40cf0c NC |
429 | |
430 | if (shndx_hdr == NULL) | |
431 | { | |
432 | if (symtab_hdr == & elf_symtab_hdr (ibfd)) | |
433 | /* Not really accurate, but this was how the old code used to work. */ | |
434 | shndx_hdr = & elf_symtab_shndx_list (ibfd)->hdr; | |
435 | /* Otherwise we do nothing. The assumption is that | |
436 | the index table will not be needed. */ | |
437 | } | |
438 | } | |
6cdc0ccc AM |
439 | |
440 | /* Read the symbols. */ | |
441 | alloc_ext = NULL; | |
442 | alloc_extshndx = NULL; | |
4dd07732 | 443 | alloc_intsym = NULL; |
6cdc0ccc AM |
444 | bed = get_elf_backend_data (ibfd); |
445 | extsym_size = bed->s->sizeof_sym; | |
1f4361a7 AM |
446 | if (_bfd_mul_overflow (symcount, extsym_size, &amt)) |
447 | { | |
448 | bfd_set_error (bfd_error_file_too_big); | |
449 | intsym_buf = NULL; | |
450 | goto out; | |
451 | } | |
6cdc0ccc AM |
452 | pos = symtab_hdr->sh_offset + symoffset * extsym_size; |
453 | if (extsym_buf == NULL) | |
454 | { | |
1f4361a7 | 455 | alloc_ext = bfd_malloc (amt); |
6cdc0ccc AM |
456 | extsym_buf = alloc_ext; |
457 | } | |
458 | if (extsym_buf == NULL | |
459 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
460 | || bfd_bread (extsym_buf, amt, ibfd) != amt) | |
461 | { | |
462 | intsym_buf = NULL; | |
463 | goto out; | |
464 | } | |
465 | ||
466 | if (shndx_hdr == NULL || shndx_hdr->sh_size == 0) | |
467 | extshndx_buf = NULL; | |
468 | else | |
469 | { | |
1f4361a7 AM |
470 | if (_bfd_mul_overflow (symcount, sizeof (Elf_External_Sym_Shndx), &amt)) |
471 | { | |
472 | bfd_set_error (bfd_error_file_too_big); | |
473 | intsym_buf = NULL; | |
474 | goto out; | |
475 | } | |
6cdc0ccc AM |
476 | pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx); |
477 | if (extshndx_buf == NULL) | |
478 | { | |
1f4361a7 | 479 | alloc_extshndx = (Elf_External_Sym_Shndx *) bfd_malloc (amt); |
6cdc0ccc AM |
480 | extshndx_buf = alloc_extshndx; |
481 | } | |
482 | if (extshndx_buf == NULL | |
483 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
484 | || bfd_bread (extshndx_buf, amt, ibfd) != amt) | |
485 | { | |
486 | intsym_buf = NULL; | |
487 | goto out; | |
488 | } | |
489 | } | |
490 | ||
491 | if (intsym_buf == NULL) | |
492 | { | |
1f4361a7 AM |
493 | if (_bfd_mul_overflow (symcount, sizeof (Elf_Internal_Sym), &amt)) |
494 | { | |
495 | bfd_set_error (bfd_error_file_too_big); | |
496 | goto out; | |
497 | } | |
498 | alloc_intsym = (Elf_Internal_Sym *) bfd_malloc (amt); | |
4dd07732 | 499 | intsym_buf = alloc_intsym; |
6cdc0ccc AM |
500 | if (intsym_buf == NULL) |
501 | goto out; | |
502 | } | |
503 | ||
504 | /* Convert the symbols to internal form. */ | |
505 | isymend = intsym_buf + symcount; | |
a50b1753 | 506 | for (esym = (const bfd_byte *) extsym_buf, isym = intsym_buf, |
07d6d2b8 | 507 | shndx = extshndx_buf; |
6cdc0ccc AM |
508 | isym < isymend; |
509 | esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL) | |
8384fb8f AM |
510 | if (!(*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym)) |
511 | { | |
512 | symoffset += (esym - (bfd_byte *) extsym_buf) / extsym_size; | |
695344c0 | 513 | /* xgettext:c-format */ |
871b3ab2 | 514 | _bfd_error_handler (_("%pB symbol number %lu references" |
63a5468a | 515 | " nonexistent SHT_SYMTAB_SHNDX section"), |
4eca0228 | 516 | ibfd, (unsigned long) symoffset); |
c9594989 | 517 | free (alloc_intsym); |
8384fb8f AM |
518 | intsym_buf = NULL; |
519 | goto out; | |
520 | } | |
6cdc0ccc AM |
521 | |
522 | out: | |
c9594989 AM |
523 | free (alloc_ext); |
524 | free (alloc_extshndx); | |
6cdc0ccc AM |
525 | |
526 | return intsym_buf; | |
527 | } | |
528 | ||
5cab59f6 AM |
529 | /* Look up a symbol name. */ |
530 | const char * | |
be8dd2ca AM |
531 | bfd_elf_sym_name (bfd *abfd, |
532 | Elf_Internal_Shdr *symtab_hdr, | |
26c61ae5 L |
533 | Elf_Internal_Sym *isym, |
534 | asection *sym_sec) | |
5cab59f6 | 535 | { |
26c61ae5 | 536 | const char *name; |
5cab59f6 | 537 | unsigned int iname = isym->st_name; |
be8dd2ca | 538 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 539 | |
138f35cc JJ |
540 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
541 | /* Check for a bogus st_shndx to avoid crashing. */ | |
4fbb74a6 | 542 | && isym->st_shndx < elf_numsections (abfd)) |
5cab59f6 AM |
543 | { |
544 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
545 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
546 | } | |
547 | ||
26c61ae5 L |
548 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
549 | if (name == NULL) | |
550 | name = "(null)"; | |
551 | else if (sym_sec && *name == '\0') | |
fd361982 | 552 | name = bfd_section_name (sym_sec); |
26c61ae5 L |
553 | |
554 | return name; | |
5cab59f6 AM |
555 | } |
556 | ||
dbb410c3 AM |
557 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
558 | sections. The first element is the flags, the rest are section | |
559 | pointers. */ | |
560 | ||
561 | typedef union elf_internal_group { | |
562 | Elf_Internal_Shdr *shdr; | |
563 | unsigned int flags; | |
564 | } Elf_Internal_Group; | |
565 | ||
b885599b AM |
566 | /* Return the name of the group signature symbol. Why isn't the |
567 | signature just a string? */ | |
568 | ||
569 | static const char * | |
217aa764 | 570 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 571 | { |
9dce4196 | 572 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
573 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
574 | Elf_External_Sym_Shndx eshndx; | |
575 | Elf_Internal_Sym isym; | |
b885599b | 576 | |
13792e9d L |
577 | /* First we need to ensure the symbol table is available. Make sure |
578 | that it is a symbol table section. */ | |
4fbb74a6 AM |
579 | if (ghdr->sh_link >= elf_numsections (abfd)) |
580 | return NULL; | |
13792e9d L |
581 | hdr = elf_elfsections (abfd) [ghdr->sh_link]; |
582 | if (hdr->sh_type != SHT_SYMTAB | |
583 | || ! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
b885599b AM |
584 | return NULL; |
585 | ||
9dce4196 AM |
586 | /* Go read the symbol. */ |
587 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
588 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
589 | &isym, esym, &eshndx) == NULL) | |
b885599b | 590 | return NULL; |
9dce4196 | 591 | |
26c61ae5 | 592 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
593 | } |
594 | ||
dbb410c3 AM |
595 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
596 | ||
0a1b45a2 | 597 | static bool |
217aa764 | 598 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
599 | { |
600 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
601 | ||
602 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
603 | is set to -1 if there are no SHT_GROUP sections. */ | |
604 | if (num_group == 0) | |
605 | { | |
606 | unsigned int i, shnum; | |
607 | ||
608 | /* First count the number of groups. If we have a SHT_GROUP | |
609 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 610 | shnum = elf_numsections (abfd); |
dbb410c3 | 611 | num_group = 0; |
08a40648 | 612 | |
44534af3 | 613 | #define IS_VALID_GROUP_SECTION_HEADER(shdr, minsize) \ |
1783205a | 614 | ( (shdr)->sh_type == SHT_GROUP \ |
44534af3 | 615 | && (shdr)->sh_size >= minsize \ |
1783205a NC |
616 | && (shdr)->sh_entsize == GRP_ENTRY_SIZE \ |
617 | && ((shdr)->sh_size % GRP_ENTRY_SIZE) == 0) | |
08a40648 | 618 | |
dbb410c3 AM |
619 | for (i = 0; i < shnum; i++) |
620 | { | |
621 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a | 622 | |
44534af3 | 623 | if (IS_VALID_GROUP_SECTION_HEADER (shdr, 2 * GRP_ENTRY_SIZE)) |
dbb410c3 AM |
624 | num_group += 1; |
625 | } | |
626 | ||
627 | if (num_group == 0) | |
20dbb49d L |
628 | { |
629 | num_group = (unsigned) -1; | |
630 | elf_tdata (abfd)->num_group = num_group; | |
ce497010 | 631 | elf_tdata (abfd)->group_sect_ptr = NULL; |
20dbb49d L |
632 | } |
633 | else | |
dbb410c3 AM |
634 | { |
635 | /* We keep a list of elf section headers for group sections, | |
636 | so we can find them quickly. */ | |
1f4361a7 | 637 | size_t amt; |
d0fb9a8d | 638 | |
20dbb49d | 639 | elf_tdata (abfd)->num_group = num_group; |
1f4361a7 AM |
640 | amt = num_group * sizeof (Elf_Internal_Shdr *); |
641 | elf_tdata (abfd)->group_sect_ptr | |
642 | = (Elf_Internal_Shdr **) bfd_zalloc (abfd, amt); | |
dbb410c3 | 643 | if (elf_tdata (abfd)->group_sect_ptr == NULL) |
0a1b45a2 | 644 | return false; |
dbb410c3 | 645 | num_group = 0; |
ce497010 | 646 | |
dbb410c3 AM |
647 | for (i = 0; i < shnum; i++) |
648 | { | |
649 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a | 650 | |
44534af3 | 651 | if (IS_VALID_GROUP_SECTION_HEADER (shdr, 2 * GRP_ENTRY_SIZE)) |
dbb410c3 | 652 | { |
973ffd63 | 653 | unsigned char *src; |
dbb410c3 AM |
654 | Elf_Internal_Group *dest; |
655 | ||
07d6d2b8 AM |
656 | /* Make sure the group section has a BFD section |
657 | attached to it. */ | |
658 | if (!bfd_section_from_shdr (abfd, i)) | |
0a1b45a2 | 659 | return false; |
07d6d2b8 | 660 | |
dbb410c3 AM |
661 | /* Add to list of sections. */ |
662 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
663 | num_group += 1; | |
664 | ||
665 | /* Read the raw contents. */ | |
1f4361a7 AM |
666 | BFD_ASSERT (sizeof (*dest) >= 4 && sizeof (*dest) % 4 == 0); |
667 | shdr->contents = NULL; | |
668 | if (_bfd_mul_overflow (shdr->sh_size, | |
669 | sizeof (*dest) / 4, &amt) | |
1f4361a7 | 670 | || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 |
2bb3687b AM |
671 | || !(shdr->contents |
672 | = _bfd_alloc_and_read (abfd, amt, shdr->sh_size))) | |
493a3386 NC |
673 | { |
674 | _bfd_error_handler | |
695344c0 | 675 | /* xgettext:c-format */ |
871b3ab2 | 676 | (_("%pB: invalid size field in group section" |
2dcf00ce AM |
677 | " header: %#" PRIx64 ""), |
678 | abfd, (uint64_t) shdr->sh_size); | |
493a3386 NC |
679 | bfd_set_error (bfd_error_bad_value); |
680 | -- num_group; | |
493a3386 NC |
681 | continue; |
682 | } | |
708d7d0d | 683 | |
dbb410c3 AM |
684 | /* Translate raw contents, a flag word followed by an |
685 | array of elf section indices all in target byte order, | |
686 | to the flag word followed by an array of elf section | |
687 | pointers. */ | |
688 | src = shdr->contents + shdr->sh_size; | |
689 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
06614111 | 690 | |
dbb410c3 AM |
691 | while (1) |
692 | { | |
693 | unsigned int idx; | |
694 | ||
695 | src -= 4; | |
696 | --dest; | |
697 | idx = H_GET_32 (abfd, src); | |
698 | if (src == shdr->contents) | |
699 | { | |
327301a4 | 700 | dest->shdr = NULL; |
dbb410c3 | 701 | dest->flags = idx; |
b885599b AM |
702 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
703 | shdr->bfd_section->flags | |
704 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
705 | break; |
706 | } | |
4bba0fb1 | 707 | if (idx < shnum) |
bae363f1 L |
708 | { |
709 | dest->shdr = elf_elfsections (abfd)[idx]; | |
710 | /* PR binutils/23199: All sections in a | |
711 | section group should be marked with | |
712 | SHF_GROUP. But some tools generate | |
713 | broken objects without SHF_GROUP. Fix | |
714 | them up here. */ | |
715 | dest->shdr->sh_flags |= SHF_GROUP; | |
716 | } | |
4bba0fb1 AM |
717 | if (idx >= shnum |
718 | || dest->shdr->sh_type == SHT_GROUP) | |
dbb410c3 | 719 | { |
4eca0228 | 720 | _bfd_error_handler |
4bba0fb1 AM |
721 | (_("%pB: invalid entry in SHT_GROUP section [%u]"), |
722 | abfd, i); | |
723 | dest->shdr = NULL; | |
dbb410c3 | 724 | } |
dbb410c3 AM |
725 | } |
726 | } | |
727 | } | |
493a3386 NC |
728 | |
729 | /* PR 17510: Corrupt binaries might contain invalid groups. */ | |
730 | if (num_group != (unsigned) elf_tdata (abfd)->num_group) | |
731 | { | |
732 | elf_tdata (abfd)->num_group = num_group; | |
733 | ||
734 | /* If all groups are invalid then fail. */ | |
735 | if (num_group == 0) | |
736 | { | |
737 | elf_tdata (abfd)->group_sect_ptr = NULL; | |
738 | elf_tdata (abfd)->num_group = num_group = -1; | |
4eca0228 | 739 | _bfd_error_handler |
871b3ab2 | 740 | (_("%pB: no valid group sections found"), abfd); |
493a3386 NC |
741 | bfd_set_error (bfd_error_bad_value); |
742 | } | |
743 | } | |
dbb410c3 AM |
744 | } |
745 | } | |
746 | ||
747 | if (num_group != (unsigned) -1) | |
748 | { | |
564e11c9 JW |
749 | unsigned int search_offset = elf_tdata (abfd)->group_search_offset; |
750 | unsigned int j; | |
dbb410c3 | 751 | |
564e11c9 | 752 | for (j = 0; j < num_group; j++) |
dbb410c3 | 753 | { |
564e11c9 JW |
754 | /* Begin search from previous found group. */ |
755 | unsigned i = (j + search_offset) % num_group; | |
756 | ||
dbb410c3 | 757 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; |
ce497010 | 758 | Elf_Internal_Group *idx; |
0c54f692 | 759 | bfd_size_type n_elt; |
ce497010 NC |
760 | |
761 | if (shdr == NULL) | |
762 | continue; | |
763 | ||
764 | idx = (Elf_Internal_Group *) shdr->contents; | |
0c54f692 NC |
765 | if (idx == NULL || shdr->sh_size < 4) |
766 | { | |
767 | /* See PR 21957 for a reproducer. */ | |
768 | /* xgettext:c-format */ | |
871b3ab2 | 769 | _bfd_error_handler (_("%pB: group section '%pA' has no contents"), |
0c54f692 NC |
770 | abfd, shdr->bfd_section); |
771 | elf_tdata (abfd)->group_sect_ptr[i] = NULL; | |
772 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 773 | return false; |
0c54f692 | 774 | } |
ce497010 | 775 | n_elt = shdr->sh_size / 4; |
dbb410c3 AM |
776 | |
777 | /* Look through this group's sections to see if current | |
778 | section is a member. */ | |
779 | while (--n_elt != 0) | |
780 | if ((++idx)->shdr == hdr) | |
781 | { | |
e0e8c97f | 782 | asection *s = NULL; |
dbb410c3 AM |
783 | |
784 | /* We are a member of this group. Go looking through | |
785 | other members to see if any others are linked via | |
786 | next_in_group. */ | |
787 | idx = (Elf_Internal_Group *) shdr->contents; | |
788 | n_elt = shdr->sh_size / 4; | |
789 | while (--n_elt != 0) | |
4bba0fb1 AM |
790 | if ((++idx)->shdr != NULL |
791 | && (s = idx->shdr->bfd_section) != NULL | |
945906ff | 792 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
793 | break; |
794 | if (n_elt != 0) | |
795 | { | |
dbb410c3 AM |
796 | /* Snarf the group name from other member, and |
797 | insert current section in circular list. */ | |
945906ff AM |
798 | elf_group_name (newsect) = elf_group_name (s); |
799 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
800 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
801 | } |
802 | else | |
803 | { | |
dbb410c3 AM |
804 | const char *gname; |
805 | ||
b885599b AM |
806 | gname = group_signature (abfd, shdr); |
807 | if (gname == NULL) | |
0a1b45a2 | 808 | return false; |
945906ff | 809 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
810 | |
811 | /* Start a circular list with one element. */ | |
945906ff | 812 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 813 | } |
b885599b | 814 | |
9dce4196 AM |
815 | /* If the group section has been created, point to the |
816 | new member. */ | |
dbb410c3 | 817 | if (shdr->bfd_section != NULL) |
945906ff | 818 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 819 | |
564e11c9 JW |
820 | elf_tdata (abfd)->group_search_offset = i; |
821 | j = num_group - 1; | |
dbb410c3 AM |
822 | break; |
823 | } | |
824 | } | |
825 | } | |
826 | ||
945906ff | 827 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 828 | { |
695344c0 | 829 | /* xgettext:c-format */ |
871b3ab2 | 830 | _bfd_error_handler (_("%pB: no group info for section '%pA'"), |
4eca0228 | 831 | abfd, newsect); |
0a1b45a2 | 832 | return false; |
dbb410c3 | 833 | } |
0a1b45a2 | 834 | return true; |
dbb410c3 AM |
835 | } |
836 | ||
0a1b45a2 | 837 | bool |
dd863624 | 838 | _bfd_elf_setup_sections (bfd *abfd) |
3d7f7666 L |
839 | { |
840 | unsigned int i; | |
841 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
0a1b45a2 | 842 | bool result = true; |
dd863624 L |
843 | asection *s; |
844 | ||
845 | /* Process SHF_LINK_ORDER. */ | |
846 | for (s = abfd->sections; s != NULL; s = s->next) | |
847 | { | |
848 | Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr; | |
849 | if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0) | |
850 | { | |
851 | unsigned int elfsec = this_hdr->sh_link; | |
b71702f1 NC |
852 | /* An sh_link value of 0 is now allowed. It indicates that linked |
853 | to section has already been discarded, but that the current | |
854 | section has been retained for some other reason. This linking | |
855 | section is still a candidate for later garbage collection | |
856 | however. */ | |
dd863624 L |
857 | if (elfsec == 0) |
858 | { | |
b71702f1 | 859 | elf_linked_to_section (s) = NULL; |
dd863624 L |
860 | } |
861 | else | |
862 | { | |
91d6fa6a | 863 | asection *linksec = NULL; |
25bbc984 | 864 | |
4fbb74a6 AM |
865 | if (elfsec < elf_numsections (abfd)) |
866 | { | |
867 | this_hdr = elf_elfsections (abfd)[elfsec]; | |
91d6fa6a | 868 | linksec = this_hdr->bfd_section; |
4fbb74a6 | 869 | } |
25bbc984 L |
870 | |
871 | /* PR 1991, 2008: | |
872 | Some strip/objcopy may leave an incorrect value in | |
873 | sh_link. We don't want to proceed. */ | |
91d6fa6a | 874 | if (linksec == NULL) |
25bbc984 | 875 | { |
4eca0228 | 876 | _bfd_error_handler |
695344c0 | 877 | /* xgettext:c-format */ |
871b3ab2 | 878 | (_("%pB: sh_link [%d] in section `%pA' is incorrect"), |
c08bb8dd | 879 | s->owner, elfsec, s); |
0a1b45a2 | 880 | result = false; |
25bbc984 L |
881 | } |
882 | ||
91d6fa6a | 883 | elf_linked_to_section (s) = linksec; |
dd863624 L |
884 | } |
885 | } | |
53720c49 AM |
886 | else if (this_hdr->sh_type == SHT_GROUP |
887 | && elf_next_in_group (s) == NULL) | |
888 | { | |
4eca0228 | 889 | _bfd_error_handler |
695344c0 | 890 | /* xgettext:c-format */ |
871b3ab2 | 891 | (_("%pB: SHT_GROUP section [index %d] has no SHF_GROUP sections"), |
53720c49 | 892 | abfd, elf_section_data (s)->this_idx); |
0a1b45a2 | 893 | result = false; |
53720c49 | 894 | } |
dd863624 | 895 | } |
3d7f7666 | 896 | |
dd863624 | 897 | /* Process section groups. */ |
3d7f7666 L |
898 | if (num_group == (unsigned) -1) |
899 | return result; | |
900 | ||
901 | for (i = 0; i < num_group; i++) | |
902 | { | |
903 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
4b0e8a5f NC |
904 | Elf_Internal_Group *idx; |
905 | unsigned int n_elt; | |
3d7f7666 | 906 | |
4b0e8a5f NC |
907 | /* PR binutils/18758: Beware of corrupt binaries with invalid group data. */ |
908 | if (shdr == NULL || shdr->bfd_section == NULL || shdr->contents == NULL) | |
909 | { | |
4eca0228 | 910 | _bfd_error_handler |
695344c0 | 911 | /* xgettext:c-format */ |
871b3ab2 | 912 | (_("%pB: section group entry number %u is corrupt"), |
4b0e8a5f | 913 | abfd, i); |
0a1b45a2 | 914 | result = false; |
4b0e8a5f NC |
915 | continue; |
916 | } | |
917 | ||
918 | idx = (Elf_Internal_Group *) shdr->contents; | |
919 | n_elt = shdr->sh_size / 4; | |
1b786873 | 920 | |
3d7f7666 | 921 | while (--n_elt != 0) |
24d3e51b NC |
922 | { |
923 | ++ idx; | |
924 | ||
925 | if (idx->shdr == NULL) | |
926 | continue; | |
927 | else if (idx->shdr->bfd_section) | |
928 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
db4677b8 AM |
929 | else if (idx->shdr->sh_type != SHT_RELA |
930 | && idx->shdr->sh_type != SHT_REL) | |
24d3e51b NC |
931 | { |
932 | /* There are some unknown sections in the group. */ | |
933 | _bfd_error_handler | |
934 | /* xgettext:c-format */ | |
871b3ab2 | 935 | (_("%pB: unknown type [%#x] section `%s' in group [%pA]"), |
24d3e51b NC |
936 | abfd, |
937 | idx->shdr->sh_type, | |
938 | bfd_elf_string_from_elf_section (abfd, | |
939 | (elf_elfheader (abfd) | |
940 | ->e_shstrndx), | |
941 | idx->shdr->sh_name), | |
942 | shdr->bfd_section); | |
0a1b45a2 | 943 | result = false; |
24d3e51b NC |
944 | } |
945 | } | |
3d7f7666 | 946 | } |
24d3e51b | 947 | |
3d7f7666 L |
948 | return result; |
949 | } | |
950 | ||
0a1b45a2 | 951 | bool |
72adc230 AM |
952 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) |
953 | { | |
954 | return elf_next_in_group (sec) != NULL; | |
955 | } | |
956 | ||
cb7f4b29 AM |
957 | const char * |
958 | bfd_elf_group_name (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
959 | { | |
960 | if (elf_sec_group (sec) != NULL) | |
961 | return elf_group_name (sec); | |
962 | return NULL; | |
963 | } | |
964 | ||
f6fe1ccd L |
965 | static char * |
966 | convert_debug_to_zdebug (bfd *abfd, const char *name) | |
967 | { | |
968 | unsigned int len = strlen (name); | |
969 | char *new_name = bfd_alloc (abfd, len + 2); | |
970 | if (new_name == NULL) | |
971 | return NULL; | |
972 | new_name[0] = '.'; | |
973 | new_name[1] = 'z'; | |
974 | memcpy (new_name + 2, name + 1, len); | |
975 | return new_name; | |
976 | } | |
977 | ||
978 | static char * | |
979 | convert_zdebug_to_debug (bfd *abfd, const char *name) | |
980 | { | |
981 | unsigned int len = strlen (name); | |
982 | char *new_name = bfd_alloc (abfd, len); | |
983 | if (new_name == NULL) | |
984 | return NULL; | |
985 | new_name[0] = '.'; | |
986 | memcpy (new_name + 1, name + 2, len - 1); | |
987 | return new_name; | |
988 | } | |
989 | ||
cc5277b1 ML |
990 | /* This a copy of lto_section defined in GCC (lto-streamer.h). */ |
991 | ||
992 | struct lto_section | |
993 | { | |
994 | int16_t major_version; | |
995 | int16_t minor_version; | |
996 | unsigned char slim_object; | |
997 | ||
998 | /* Flags is a private field that is not defined publicly. */ | |
999 | uint16_t flags; | |
1000 | }; | |
1001 | ||
252b5132 RH |
1002 | /* Make a BFD section from an ELF section. We store a pointer to the |
1003 | BFD section in the bfd_section field of the header. */ | |
1004 | ||
0a1b45a2 | 1005 | bool |
217aa764 AM |
1006 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
1007 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
1008 | const char *name, |
1009 | int shindex) | |
252b5132 RH |
1010 | { |
1011 | asection *newsect; | |
1012 | flagword flags; | |
9c5bfbb7 | 1013 | const struct elf_backend_data *bed; |
502794d4 | 1014 | unsigned int opb = bfd_octets_per_byte (abfd, NULL); |
252b5132 RH |
1015 | |
1016 | if (hdr->bfd_section != NULL) | |
0a1b45a2 | 1017 | return true; |
252b5132 RH |
1018 | |
1019 | newsect = bfd_make_section_anyway (abfd, name); | |
1020 | if (newsect == NULL) | |
0a1b45a2 | 1021 | return false; |
252b5132 | 1022 | |
1829f4b2 AM |
1023 | hdr->bfd_section = newsect; |
1024 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 1025 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 1026 | |
2f89ff8d L |
1027 | /* Always use the real type/flags. */ |
1028 | elf_section_type (newsect) = hdr->sh_type; | |
1029 | elf_section_flags (newsect) = hdr->sh_flags; | |
1030 | ||
252b5132 RH |
1031 | newsect->filepos = hdr->sh_offset; |
1032 | ||
252b5132 RH |
1033 | flags = SEC_NO_FLAGS; |
1034 | if (hdr->sh_type != SHT_NOBITS) | |
1035 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 1036 | if (hdr->sh_type == SHT_GROUP) |
7bdf4127 | 1037 | flags |= SEC_GROUP; |
252b5132 RH |
1038 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
1039 | { | |
1040 | flags |= SEC_ALLOC; | |
1041 | if (hdr->sh_type != SHT_NOBITS) | |
1042 | flags |= SEC_LOAD; | |
1043 | } | |
1044 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
1045 | flags |= SEC_READONLY; | |
1046 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
1047 | flags |= SEC_CODE; | |
1048 | else if ((flags & SEC_LOAD) != 0) | |
1049 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
1050 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
1051 | { | |
1052 | flags |= SEC_MERGE; | |
1053 | newsect->entsize = hdr->sh_entsize; | |
f5fa8ca2 | 1054 | } |
84865015 NC |
1055 | if ((hdr->sh_flags & SHF_STRINGS) != 0) |
1056 | flags |= SEC_STRINGS; | |
dbb410c3 AM |
1057 | if (hdr->sh_flags & SHF_GROUP) |
1058 | if (!setup_group (abfd, hdr, newsect)) | |
0a1b45a2 | 1059 | return false; |
13ae64f3 JJ |
1060 | if ((hdr->sh_flags & SHF_TLS) != 0) |
1061 | flags |= SEC_THREAD_LOCAL; | |
18ae9cc1 L |
1062 | if ((hdr->sh_flags & SHF_EXCLUDE) != 0) |
1063 | flags |= SEC_EXCLUDE; | |
252b5132 | 1064 | |
df3a023b AM |
1065 | switch (elf_elfheader (abfd)->e_ident[EI_OSABI]) |
1066 | { | |
1067 | /* FIXME: We should not recognize SHF_GNU_MBIND for ELFOSABI_NONE, | |
1068 | but binutils as of 2019-07-23 did not set the EI_OSABI header | |
1069 | byte. */ | |
df3a023b AM |
1070 | case ELFOSABI_GNU: |
1071 | case ELFOSABI_FREEBSD: | |
99fabbc9 JL |
1072 | if ((hdr->sh_flags & SHF_GNU_RETAIN) != 0) |
1073 | elf_tdata (abfd)->has_gnu_osabi |= elf_gnu_osabi_retain; | |
1074 | /* Fall through */ | |
1075 | case ELFOSABI_NONE: | |
df3a023b AM |
1076 | if ((hdr->sh_flags & SHF_GNU_MBIND) != 0) |
1077 | elf_tdata (abfd)->has_gnu_osabi |= elf_gnu_osabi_mbind; | |
1078 | break; | |
1079 | } | |
1080 | ||
3d2b39cf | 1081 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 1082 | { |
3d2b39cf L |
1083 | /* The debugging sections appear to be recognized only by name, |
1084 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
3d2b39cf L |
1085 | if (name [0] == '.') |
1086 | { | |
3f3328b8 ML |
1087 | if (startswith (name, ".debug") |
1088 | || startswith (name, ".gnu.debuglto_.debug_") | |
1089 | || startswith (name, ".gnu.linkonce.wi.") | |
1090 | || startswith (name, ".zdebug")) | |
bb294208 | 1091 | flags |= SEC_DEBUGGING | SEC_ELF_OCTETS; |
3f3328b8 ML |
1092 | else if (startswith (name, GNU_BUILD_ATTRS_SECTION_NAME) |
1093 | || startswith (name, ".note.gnu")) | |
502794d4 CE |
1094 | { |
1095 | flags |= SEC_ELF_OCTETS; | |
1096 | opb = 1; | |
1097 | } | |
3f3328b8 ML |
1098 | else if (startswith (name, ".line") |
1099 | || startswith (name, ".stab") | |
bb294208 | 1100 | || strcmp (name, ".gdb_index") == 0) |
3d2b39cf L |
1101 | flags |= SEC_DEBUGGING; |
1102 | } | |
1103 | } | |
252b5132 | 1104 | |
502794d4 CE |
1105 | if (!bfd_set_section_vma (newsect, hdr->sh_addr / opb) |
1106 | || !bfd_set_section_size (newsect, hdr->sh_size) | |
1107 | || !bfd_set_section_alignment (newsect, bfd_log2 (hdr->sh_addralign))) | |
0a1b45a2 | 1108 | return false; |
502794d4 | 1109 | |
252b5132 RH |
1110 | /* As a GNU extension, if the name begins with .gnu.linkonce, we |
1111 | only link a single copy of the section. This is used to support | |
1112 | g++. g++ will emit each template expansion in its own section. | |
1113 | The symbols will be defined as weak, so that multiple definitions | |
1114 | are permitted. The GNU linker extension is to actually discard | |
1115 | all but one of the sections. */ | |
08dedd66 | 1116 | if (startswith (name, ".gnu.linkonce") |
b885599b | 1117 | && elf_next_in_group (newsect) == NULL) |
252b5132 RH |
1118 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
1119 | ||
8c803a2d | 1120 | if (!bfd_set_section_flags (newsect, flags)) |
0a1b45a2 | 1121 | return false; |
8c803a2d | 1122 | |
fa152c49 JW |
1123 | bed = get_elf_backend_data (abfd); |
1124 | if (bed->elf_backend_section_flags) | |
8c803a2d | 1125 | if (!bed->elf_backend_section_flags (hdr)) |
0a1b45a2 | 1126 | return false; |
fa152c49 | 1127 | |
718175fa JK |
1128 | /* We do not parse the PT_NOTE segments as we are interested even in the |
1129 | separate debug info files which may have the segments offsets corrupted. | |
1130 | PT_NOTEs from the core files are currently not parsed using BFD. */ | |
1131 | if (hdr->sh_type == SHT_NOTE) | |
1132 | { | |
baea7ef1 | 1133 | bfd_byte *contents; |
718175fa | 1134 | |
baea7ef1 | 1135 | if (!bfd_malloc_and_get_section (abfd, newsect, &contents)) |
0a1b45a2 | 1136 | return false; |
718175fa | 1137 | |
276da9b3 L |
1138 | elf_parse_notes (abfd, (char *) contents, hdr->sh_size, |
1139 | hdr->sh_offset, hdr->sh_addralign); | |
718175fa JK |
1140 | free (contents); |
1141 | } | |
1142 | ||
8c803a2d | 1143 | if ((newsect->flags & SEC_ALLOC) != 0) |
252b5132 RH |
1144 | { |
1145 | Elf_Internal_Phdr *phdr; | |
6ffd7900 AM |
1146 | unsigned int i, nload; |
1147 | ||
1148 | /* Some ELF linkers produce binaries with all the program header | |
1149 | p_paddr fields zero. If we have such a binary with more than | |
1150 | one PT_LOAD header, then leave the section lma equal to vma | |
1151 | so that we don't create sections with overlapping lma. */ | |
1152 | phdr = elf_tdata (abfd)->phdr; | |
1153 | for (nload = 0, i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
1154 | if (phdr->p_paddr != 0) | |
1155 | break; | |
1156 | else if (phdr->p_type == PT_LOAD && phdr->p_memsz != 0) | |
1157 | ++nload; | |
1158 | if (i >= elf_elfheader (abfd)->e_phnum && nload > 1) | |
0a1b45a2 | 1159 | return true; |
252b5132 | 1160 | |
252b5132 RH |
1161 | phdr = elf_tdata (abfd)->phdr; |
1162 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
1163 | { | |
86b2281f AM |
1164 | if (((phdr->p_type == PT_LOAD |
1165 | && (hdr->sh_flags & SHF_TLS) == 0) | |
1166 | || phdr->p_type == PT_TLS) | |
9a83a553 | 1167 | && ELF_SECTION_IN_SEGMENT (hdr, phdr)) |
252b5132 | 1168 | { |
8c803a2d | 1169 | if ((newsect->flags & SEC_LOAD) == 0) |
88967714 | 1170 | newsect->lma = (phdr->p_paddr |
502794d4 | 1171 | + hdr->sh_addr - phdr->p_vaddr) / opb; |
88967714 AM |
1172 | else |
1173 | /* We used to use the same adjustment for SEC_LOAD | |
1174 | sections, but that doesn't work if the segment | |
1175 | is packed with code from multiple VMAs. | |
1176 | Instead we calculate the section LMA based on | |
1177 | the segment LMA. It is assumed that the | |
1178 | segment will contain sections with contiguous | |
1179 | LMAs, even if the VMAs are not. */ | |
1180 | newsect->lma = (phdr->p_paddr | |
502794d4 | 1181 | + hdr->sh_offset - phdr->p_offset) / opb; |
88967714 AM |
1182 | |
1183 | /* With contiguous segments, we can't tell from file | |
1184 | offsets whether a section with zero size should | |
1185 | be placed at the end of one segment or the | |
1186 | beginning of the next. Decide based on vaddr. */ | |
1187 | if (hdr->sh_addr >= phdr->p_vaddr | |
1188 | && (hdr->sh_addr + hdr->sh_size | |
1189 | <= phdr->p_vaddr + phdr->p_memsz)) | |
1190 | break; | |
252b5132 RH |
1191 | } |
1192 | } | |
1193 | } | |
1194 | ||
4a114e3e L |
1195 | /* Compress/decompress DWARF debug sections with names: .debug_* and |
1196 | .zdebug_*, after the section flags is set. */ | |
8c803a2d | 1197 | if ((newsect->flags & SEC_DEBUGGING) |
4a114e3e L |
1198 | && ((name[1] == 'd' && name[6] == '_') |
1199 | || (name[1] == 'z' && name[7] == '_'))) | |
1200 | { | |
1201 | enum { nothing, compress, decompress } action = nothing; | |
151411f8 | 1202 | int compression_header_size; |
dab394de | 1203 | bfd_size_type uncompressed_size; |
4207142d | 1204 | unsigned int uncompressed_align_power; |
0a1b45a2 | 1205 | bool compressed |
151411f8 | 1206 | = bfd_is_section_compressed_with_header (abfd, newsect, |
dab394de | 1207 | &compression_header_size, |
4207142d MW |
1208 | &uncompressed_size, |
1209 | &uncompressed_align_power); | |
151411f8 | 1210 | if (compressed) |
4a114e3e L |
1211 | { |
1212 | /* Compressed section. Check if we should decompress. */ | |
1213 | if ((abfd->flags & BFD_DECOMPRESS)) | |
1214 | action = decompress; | |
1215 | } | |
151411f8 L |
1216 | |
1217 | /* Compress the uncompressed section or convert from/to .zdebug* | |
1218 | section. Check if we should compress. */ | |
1219 | if (action == nothing) | |
4a114e3e | 1220 | { |
151411f8 L |
1221 | if (newsect->size != 0 |
1222 | && (abfd->flags & BFD_COMPRESS) | |
1223 | && compression_header_size >= 0 | |
dab394de | 1224 | && uncompressed_size > 0 |
151411f8 L |
1225 | && (!compressed |
1226 | || ((compression_header_size > 0) | |
1227 | != ((abfd->flags & BFD_COMPRESS_GABI) != 0)))) | |
4a114e3e | 1228 | action = compress; |
151411f8 | 1229 | else |
0a1b45a2 | 1230 | return true; |
4a114e3e L |
1231 | } |
1232 | ||
151411f8 | 1233 | if (action == compress) |
4a114e3e | 1234 | { |
4a114e3e L |
1235 | if (!bfd_init_section_compress_status (abfd, newsect)) |
1236 | { | |
4eca0228 | 1237 | _bfd_error_handler |
695344c0 | 1238 | /* xgettext:c-format */ |
871b3ab2 | 1239 | (_("%pB: unable to initialize compress status for section %s"), |
4a114e3e | 1240 | abfd, name); |
0a1b45a2 | 1241 | return false; |
4a114e3e | 1242 | } |
151411f8 L |
1243 | } |
1244 | else | |
1245 | { | |
4a114e3e L |
1246 | if (!bfd_init_section_decompress_status (abfd, newsect)) |
1247 | { | |
4eca0228 | 1248 | _bfd_error_handler |
695344c0 | 1249 | /* xgettext:c-format */ |
871b3ab2 | 1250 | (_("%pB: unable to initialize decompress status for section %s"), |
4a114e3e | 1251 | abfd, name); |
0a1b45a2 | 1252 | return false; |
4a114e3e | 1253 | } |
151411f8 L |
1254 | } |
1255 | ||
f6fe1ccd | 1256 | if (abfd->is_linker_input) |
151411f8 | 1257 | { |
f6fe1ccd L |
1258 | if (name[1] == 'z' |
1259 | && (action == decompress | |
1260 | || (action == compress | |
1261 | && (abfd->flags & BFD_COMPRESS_GABI) != 0))) | |
4e011fb5 | 1262 | { |
f6fe1ccd L |
1263 | /* Convert section name from .zdebug_* to .debug_* so |
1264 | that linker will consider this section as a debug | |
1265 | section. */ | |
1266 | char *new_name = convert_zdebug_to_debug (abfd, name); | |
151411f8 | 1267 | if (new_name == NULL) |
0a1b45a2 | 1268 | return false; |
fd361982 | 1269 | bfd_rename_section (newsect, new_name); |
151411f8 | 1270 | } |
4a114e3e | 1271 | } |
f6fe1ccd L |
1272 | else |
1273 | /* For objdump, don't rename the section. For objcopy, delay | |
1274 | section rename to elf_fake_sections. */ | |
1275 | newsect->flags |= SEC_ELF_RENAME; | |
4a114e3e L |
1276 | } |
1277 | ||
cc5277b1 ML |
1278 | /* GCC uses .gnu.lto_.lto.<some_hash> as a LTO bytecode information |
1279 | section. */ | |
3f3328b8 | 1280 | if (startswith (name, ".gnu.lto_.lto.")) |
cc5277b1 ML |
1281 | { |
1282 | struct lto_section lsection; | |
1283 | if (bfd_get_section_contents (abfd, newsect, &lsection, 0, | |
1284 | sizeof (struct lto_section))) | |
1285 | abfd->lto_slim_object = lsection.slim_object; | |
1286 | } | |
1287 | ||
0a1b45a2 | 1288 | return true; |
252b5132 RH |
1289 | } |
1290 | ||
84865015 NC |
1291 | const char *const bfd_elf_section_type_names[] = |
1292 | { | |
252b5132 RH |
1293 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", |
1294 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
1295 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
1296 | }; | |
1297 | ||
1049f94e | 1298 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
1299 | output, and the reloc is against an external symbol, and nothing |
1300 | has given us any additional addend, the resulting reloc will also | |
1301 | be against the same symbol. In such a case, we don't want to | |
1302 | change anything about the way the reloc is handled, since it will | |
1303 | all be done at final link time. Rather than put special case code | |
1304 | into bfd_perform_relocation, all the reloc types use this howto | |
2dfa8341 | 1305 | function, or should call this function for relocatable output. */ |
252b5132 | 1306 | |
252b5132 | 1307 | bfd_reloc_status_type |
217aa764 AM |
1308 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
1309 | arelent *reloc_entry, | |
1310 | asymbol *symbol, | |
1311 | void *data ATTRIBUTE_UNUSED, | |
1312 | asection *input_section, | |
1313 | bfd *output_bfd, | |
1314 | char **error_message ATTRIBUTE_UNUSED) | |
1315 | { | |
1316 | if (output_bfd != NULL | |
252b5132 RH |
1317 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
1318 | && (! reloc_entry->howto->partial_inplace | |
1319 | || reloc_entry->addend == 0)) | |
1320 | { | |
1321 | reloc_entry->address += input_section->output_offset; | |
1322 | return bfd_reloc_ok; | |
1323 | } | |
1324 | ||
2dfa8341 AM |
1325 | /* In some cases the relocation should be treated as output section |
1326 | relative, as when linking ELF DWARF into PE COFF. Many ELF | |
1327 | targets lack section relative relocations and instead use | |
1328 | ordinary absolute relocations for references between DWARF | |
1329 | sections. That is arguably a bug in those targets but it happens | |
1330 | to work for the usual case of linking to non-loaded ELF debug | |
1331 | sections with VMAs forced to zero. PE COFF on the other hand | |
1332 | doesn't allow a section VMA of zero. */ | |
1333 | if (output_bfd == NULL | |
1334 | && !reloc_entry->howto->pc_relative | |
1335 | && (symbol->section->flags & SEC_DEBUGGING) != 0 | |
1336 | && (input_section->flags & SEC_DEBUGGING) != 0) | |
1337 | reloc_entry->addend -= symbol->section->output_section->vma; | |
1338 | ||
252b5132 RH |
1339 | return bfd_reloc_continue; |
1340 | } | |
1341 | \f | |
84865015 NC |
1342 | /* Returns TRUE if section A matches section B. |
1343 | Names, addresses and links may be different, but everything else | |
1344 | should be the same. */ | |
1345 | ||
0a1b45a2 | 1346 | static bool |
5522f910 NC |
1347 | section_match (const Elf_Internal_Shdr * a, |
1348 | const Elf_Internal_Shdr * b) | |
84865015 | 1349 | { |
ac85e67c AM |
1350 | if (a->sh_type != b->sh_type |
1351 | || ((a->sh_flags ^ b->sh_flags) & ~SHF_INFO_LINK) != 0 | |
1352 | || a->sh_addralign != b->sh_addralign | |
1353 | || a->sh_entsize != b->sh_entsize) | |
0a1b45a2 | 1354 | return false; |
ac85e67c AM |
1355 | if (a->sh_type == SHT_SYMTAB |
1356 | || a->sh_type == SHT_STRTAB) | |
0a1b45a2 | 1357 | return true; |
ac85e67c | 1358 | return a->sh_size == b->sh_size; |
84865015 NC |
1359 | } |
1360 | ||
1361 | /* Find a section in OBFD that has the same characteristics | |
1362 | as IHEADER. Return the index of this section or SHN_UNDEF if | |
1363 | none can be found. Check's section HINT first, as this is likely | |
1364 | to be the correct section. */ | |
1365 | ||
1366 | static unsigned int | |
5cc4ca83 ST |
1367 | find_link (const bfd *obfd, const Elf_Internal_Shdr *iheader, |
1368 | const unsigned int hint) | |
84865015 NC |
1369 | { |
1370 | Elf_Internal_Shdr ** oheaders = elf_elfsections (obfd); | |
1371 | unsigned int i; | |
1372 | ||
a55c9876 NC |
1373 | BFD_ASSERT (iheader != NULL); |
1374 | ||
1375 | /* See PR 20922 for a reproducer of the NULL test. */ | |
5cc4ca83 ST |
1376 | if (hint < elf_numsections (obfd) |
1377 | && oheaders[hint] != NULL | |
a55c9876 | 1378 | && section_match (oheaders[hint], iheader)) |
84865015 NC |
1379 | return hint; |
1380 | ||
1381 | for (i = 1; i < elf_numsections (obfd); i++) | |
1382 | { | |
1383 | Elf_Internal_Shdr * oheader = oheaders[i]; | |
1384 | ||
a55c9876 NC |
1385 | if (oheader == NULL) |
1386 | continue; | |
84865015 NC |
1387 | if (section_match (oheader, iheader)) |
1388 | /* FIXME: Do we care if there is a potential for | |
1389 | multiple matches ? */ | |
1390 | return i; | |
1391 | } | |
1392 | ||
1393 | return SHN_UNDEF; | |
1394 | } | |
1395 | ||
5522f910 NC |
1396 | /* PR 19938: Attempt to set the ELF section header fields of an OS or |
1397 | Processor specific section, based upon a matching input section. | |
1398 | Returns TRUE upon success, FALSE otherwise. */ | |
07d6d2b8 | 1399 | |
0a1b45a2 | 1400 | static bool |
5522f910 NC |
1401 | copy_special_section_fields (const bfd *ibfd, |
1402 | bfd *obfd, | |
1403 | const Elf_Internal_Shdr *iheader, | |
1404 | Elf_Internal_Shdr *oheader, | |
1405 | const unsigned int secnum) | |
1406 | { | |
1407 | const struct elf_backend_data *bed = get_elf_backend_data (obfd); | |
1408 | const Elf_Internal_Shdr **iheaders = (const Elf_Internal_Shdr **) elf_elfsections (ibfd); | |
0a1b45a2 | 1409 | bool changed = false; |
5522f910 NC |
1410 | unsigned int sh_link; |
1411 | ||
1412 | if (oheader->sh_type == SHT_NOBITS) | |
1413 | { | |
1414 | /* This is a feature for objcopy --only-keep-debug: | |
1415 | When a section's type is changed to NOBITS, we preserve | |
1416 | the sh_link and sh_info fields so that they can be | |
1417 | matched up with the original. | |
1418 | ||
1419 | Note: Strictly speaking these assignments are wrong. | |
1420 | The sh_link and sh_info fields should point to the | |
1421 | relevent sections in the output BFD, which may not be in | |
1422 | the same location as they were in the input BFD. But | |
1423 | the whole point of this action is to preserve the | |
1424 | original values of the sh_link and sh_info fields, so | |
1425 | that they can be matched up with the section headers in | |
1426 | the original file. So strictly speaking we may be | |
1427 | creating an invalid ELF file, but it is only for a file | |
1428 | that just contains debug info and only for sections | |
1429 | without any contents. */ | |
1430 | if (oheader->sh_link == 0) | |
1431 | oheader->sh_link = iheader->sh_link; | |
1432 | if (oheader->sh_info == 0) | |
1433 | oheader->sh_info = iheader->sh_info; | |
0a1b45a2 | 1434 | return true; |
5522f910 NC |
1435 | } |
1436 | ||
1437 | /* Allow the target a chance to decide how these fields should be set. */ | |
a859124d AM |
1438 | if (bed->elf_backend_copy_special_section_fields (ibfd, obfd, |
1439 | iheader, oheader)) | |
0a1b45a2 | 1440 | return true; |
5522f910 NC |
1441 | |
1442 | /* We have an iheader which might match oheader, and which has non-zero | |
1443 | sh_info and/or sh_link fields. Attempt to follow those links and find | |
1444 | the section in the output bfd which corresponds to the linked section | |
1445 | in the input bfd. */ | |
1446 | if (iheader->sh_link != SHN_UNDEF) | |
1447 | { | |
4f3ca05b NC |
1448 | /* See PR 20931 for a reproducer. */ |
1449 | if (iheader->sh_link >= elf_numsections (ibfd)) | |
1450 | { | |
76cfced5 | 1451 | _bfd_error_handler |
4f3ca05b | 1452 | /* xgettext:c-format */ |
9793eb77 | 1453 | (_("%pB: invalid sh_link field (%d) in section number %d"), |
4f3ca05b | 1454 | ibfd, iheader->sh_link, secnum); |
0a1b45a2 | 1455 | return false; |
4f3ca05b NC |
1456 | } |
1457 | ||
5522f910 NC |
1458 | sh_link = find_link (obfd, iheaders[iheader->sh_link], iheader->sh_link); |
1459 | if (sh_link != SHN_UNDEF) | |
1460 | { | |
1461 | oheader->sh_link = sh_link; | |
0a1b45a2 | 1462 | changed = true; |
5522f910 NC |
1463 | } |
1464 | else | |
1465 | /* FIXME: Should we install iheader->sh_link | |
1466 | if we could not find a match ? */ | |
76cfced5 | 1467 | _bfd_error_handler |
695344c0 | 1468 | /* xgettext:c-format */ |
9793eb77 | 1469 | (_("%pB: failed to find link section for section %d"), obfd, secnum); |
5522f910 NC |
1470 | } |
1471 | ||
1472 | if (iheader->sh_info) | |
1473 | { | |
1474 | /* The sh_info field can hold arbitrary information, but if the | |
1475 | SHF_LINK_INFO flag is set then it should be interpreted as a | |
1476 | section index. */ | |
1477 | if (iheader->sh_flags & SHF_INFO_LINK) | |
1478 | { | |
1479 | sh_link = find_link (obfd, iheaders[iheader->sh_info], | |
1480 | iheader->sh_info); | |
1481 | if (sh_link != SHN_UNDEF) | |
1482 | oheader->sh_flags |= SHF_INFO_LINK; | |
1483 | } | |
1484 | else | |
1485 | /* No idea what it means - just copy it. */ | |
1486 | sh_link = iheader->sh_info; | |
1487 | ||
1488 | if (sh_link != SHN_UNDEF) | |
1489 | { | |
1490 | oheader->sh_info = sh_link; | |
0a1b45a2 | 1491 | changed = true; |
5522f910 NC |
1492 | } |
1493 | else | |
76cfced5 | 1494 | _bfd_error_handler |
695344c0 | 1495 | /* xgettext:c-format */ |
9793eb77 | 1496 | (_("%pB: failed to find info section for section %d"), obfd, secnum); |
5522f910 NC |
1497 | } |
1498 | ||
1499 | return changed; | |
1500 | } | |
07d6d2b8 | 1501 | |
0ac4564e L |
1502 | /* Copy the program header and other data from one object module to |
1503 | another. */ | |
252b5132 | 1504 | |
0a1b45a2 | 1505 | bool |
217aa764 | 1506 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 | 1507 | { |
5522f910 NC |
1508 | const Elf_Internal_Shdr **iheaders = (const Elf_Internal_Shdr **) elf_elfsections (ibfd); |
1509 | Elf_Internal_Shdr **oheaders = elf_elfsections (obfd); | |
1510 | const struct elf_backend_data *bed; | |
84865015 NC |
1511 | unsigned int i; |
1512 | ||
2d502050 | 1513 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
84865015 | 1514 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
0a1b45a2 | 1515 | return true; |
2d502050 | 1516 | |
57b828ef L |
1517 | if (!elf_flags_init (obfd)) |
1518 | { | |
1519 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
0a1b45a2 | 1520 | elf_flags_init (obfd) = true; |
57b828ef | 1521 | } |
2d502050 | 1522 | |
0ac4564e | 1523 | elf_gp (obfd) = elf_gp (ibfd); |
57b828ef L |
1524 | |
1525 | /* Also copy the EI_OSABI field. */ | |
1526 | elf_elfheader (obfd)->e_ident[EI_OSABI] = | |
1527 | elf_elfheader (ibfd)->e_ident[EI_OSABI]; | |
104d59d1 | 1528 | |
5522f910 NC |
1529 | /* If set, copy the EI_ABIVERSION field. */ |
1530 | if (elf_elfheader (ibfd)->e_ident[EI_ABIVERSION]) | |
1531 | elf_elfheader (obfd)->e_ident[EI_ABIVERSION] | |
1532 | = elf_elfheader (ibfd)->e_ident[EI_ABIVERSION]; | |
07d6d2b8 | 1533 | |
104d59d1 JM |
1534 | /* Copy object attributes. */ |
1535 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
63b9bbb7 | 1536 | |
84865015 | 1537 | if (iheaders == NULL || oheaders == NULL) |
0a1b45a2 | 1538 | return true; |
63b9bbb7 | 1539 | |
5522f910 NC |
1540 | bed = get_elf_backend_data (obfd); |
1541 | ||
1542 | /* Possibly copy other fields in the section header. */ | |
84865015 | 1543 | for (i = 1; i < elf_numsections (obfd); i++) |
63b9bbb7 | 1544 | { |
84865015 NC |
1545 | unsigned int j; |
1546 | Elf_Internal_Shdr * oheader = oheaders[i]; | |
63b9bbb7 | 1547 | |
5522f910 NC |
1548 | /* Ignore ordinary sections. SHT_NOBITS sections are considered however |
1549 | because of a special case need for generating separate debug info | |
1550 | files. See below for more details. */ | |
84865015 NC |
1551 | if (oheader == NULL |
1552 | || (oheader->sh_type != SHT_NOBITS | |
5522f910 NC |
1553 | && oheader->sh_type < SHT_LOOS)) |
1554 | continue; | |
1555 | ||
1556 | /* Ignore empty sections, and sections whose | |
1557 | fields have already been initialised. */ | |
1558 | if (oheader->sh_size == 0 | |
84865015 NC |
1559 | || (oheader->sh_info != 0 && oheader->sh_link != 0)) |
1560 | continue; | |
63b9bbb7 | 1561 | |
84865015 | 1562 | /* Scan for the matching section in the input bfd. |
5522f910 NC |
1563 | First we try for a direct mapping between the input and output sections. */ |
1564 | for (j = 1; j < elf_numsections (ibfd); j++) | |
1565 | { | |
1566 | const Elf_Internal_Shdr * iheader = iheaders[j]; | |
1567 | ||
1568 | if (iheader == NULL) | |
1569 | continue; | |
1570 | ||
1571 | if (oheader->bfd_section != NULL | |
1572 | && iheader->bfd_section != NULL | |
1573 | && iheader->bfd_section->output_section != NULL | |
1574 | && iheader->bfd_section->output_section == oheader->bfd_section) | |
1575 | { | |
1576 | /* We have found a connection from the input section to the | |
1577 | output section. Attempt to copy the header fields. If | |
1578 | this fails then do not try any further sections - there | |
1579 | should only be a one-to-one mapping between input and output. */ | |
1580 | if (! copy_special_section_fields (ibfd, obfd, iheader, oheader, i)) | |
1581 | j = elf_numsections (ibfd); | |
1582 | break; | |
1583 | } | |
1584 | } | |
1585 | ||
1586 | if (j < elf_numsections (ibfd)) | |
1587 | continue; | |
1588 | ||
1589 | /* That failed. So try to deduce the corresponding input section. | |
84865015 NC |
1590 | Unfortunately we cannot compare names as the output string table |
1591 | is empty, so instead we check size, address and type. */ | |
1592 | for (j = 1; j < elf_numsections (ibfd); j++) | |
1593 | { | |
5522f910 | 1594 | const Elf_Internal_Shdr * iheader = iheaders[j]; |
84865015 | 1595 | |
5522f910 NC |
1596 | if (iheader == NULL) |
1597 | continue; | |
1598 | ||
1599 | /* Try matching fields in the input section's header. | |
1600 | Since --only-keep-debug turns all non-debug sections into | |
84865015 NC |
1601 | SHT_NOBITS sections, the output SHT_NOBITS type matches any |
1602 | input type. */ | |
1603 | if ((oheader->sh_type == SHT_NOBITS | |
1604 | || iheader->sh_type == oheader->sh_type) | |
5522f910 NC |
1605 | && (iheader->sh_flags & ~ SHF_INFO_LINK) |
1606 | == (oheader->sh_flags & ~ SHF_INFO_LINK) | |
84865015 NC |
1607 | && iheader->sh_addralign == oheader->sh_addralign |
1608 | && iheader->sh_entsize == oheader->sh_entsize | |
1609 | && iheader->sh_size == oheader->sh_size | |
1610 | && iheader->sh_addr == oheader->sh_addr | |
1611 | && (iheader->sh_info != oheader->sh_info | |
1612 | || iheader->sh_link != oheader->sh_link)) | |
63b9bbb7 | 1613 | { |
5522f910 NC |
1614 | if (copy_special_section_fields (ibfd, obfd, iheader, oheader, i)) |
1615 | break; | |
63b9bbb7 NC |
1616 | } |
1617 | } | |
5522f910 NC |
1618 | |
1619 | if (j == elf_numsections (ibfd) && oheader->sh_type >= SHT_LOOS) | |
1620 | { | |
1621 | /* Final attempt. Call the backend copy function | |
1622 | with a NULL input section. */ | |
a859124d AM |
1623 | (void) bed->elf_backend_copy_special_section_fields (ibfd, obfd, |
1624 | NULL, oheader); | |
5522f910 | 1625 | } |
63b9bbb7 NC |
1626 | } |
1627 | ||
0a1b45a2 | 1628 | return true; |
2d502050 L |
1629 | } |
1630 | ||
cedc298e L |
1631 | static const char * |
1632 | get_segment_type (unsigned int p_type) | |
1633 | { | |
1634 | const char *pt; | |
1635 | switch (p_type) | |
1636 | { | |
1637 | case PT_NULL: pt = "NULL"; break; | |
1638 | case PT_LOAD: pt = "LOAD"; break; | |
1639 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1640 | case PT_INTERP: pt = "INTERP"; break; | |
1641 | case PT_NOTE: pt = "NOTE"; break; | |
1642 | case PT_SHLIB: pt = "SHLIB"; break; | |
1643 | case PT_PHDR: pt = "PHDR"; break; | |
1644 | case PT_TLS: pt = "TLS"; break; | |
1645 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; | |
2b05f1b7 | 1646 | case PT_GNU_STACK: pt = "STACK"; break; |
cedc298e L |
1647 | case PT_GNU_RELRO: pt = "RELRO"; break; |
1648 | default: pt = NULL; break; | |
1649 | } | |
1650 | return pt; | |
1651 | } | |
1652 | ||
f0b79d91 L |
1653 | /* Print out the program headers. */ |
1654 | ||
0a1b45a2 | 1655 | bool |
217aa764 | 1656 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1657 | { |
a50b1753 | 1658 | FILE *f = (FILE *) farg; |
252b5132 RH |
1659 | Elf_Internal_Phdr *p; |
1660 | asection *s; | |
1661 | bfd_byte *dynbuf = NULL; | |
1662 | ||
1663 | p = elf_tdata (abfd)->phdr; | |
1664 | if (p != NULL) | |
1665 | { | |
1666 | unsigned int i, c; | |
1667 | ||
1668 | fprintf (f, _("\nProgram Header:\n")); | |
1669 | c = elf_elfheader (abfd)->e_phnum; | |
1670 | for (i = 0; i < c; i++, p++) | |
1671 | { | |
cedc298e | 1672 | const char *pt = get_segment_type (p->p_type); |
252b5132 RH |
1673 | char buf[20]; |
1674 | ||
cedc298e | 1675 | if (pt == NULL) |
252b5132 | 1676 | { |
cedc298e L |
1677 | sprintf (buf, "0x%lx", p->p_type); |
1678 | pt = buf; | |
252b5132 | 1679 | } |
dc810e39 | 1680 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1681 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1682 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1683 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1684 | fprintf (f, " paddr 0x"); |
60b89a18 | 1685 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1686 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1687 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1688 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1689 | fprintf (f, " memsz 0x"); |
60b89a18 | 1690 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1691 | fprintf (f, " flags %c%c%c", |
1692 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1693 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1694 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1695 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1696 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1697 | fprintf (f, "\n"); |
1698 | } | |
1699 | } | |
1700 | ||
1701 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1702 | if (s != NULL) | |
1703 | { | |
cb33740c | 1704 | unsigned int elfsec; |
dc810e39 | 1705 | unsigned long shlink; |
252b5132 RH |
1706 | bfd_byte *extdyn, *extdynend; |
1707 | size_t extdynsize; | |
217aa764 | 1708 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1709 | |
1710 | fprintf (f, _("\nDynamic Section:\n")); | |
1711 | ||
eea6121a | 1712 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1713 | goto error_return; |
1714 | ||
1715 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
cb33740c | 1716 | if (elfsec == SHN_BAD) |
252b5132 | 1717 | goto error_return; |
dc810e39 | 1718 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1719 | |
1720 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1721 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1722 | ||
1723 | extdyn = dynbuf; | |
06614111 NC |
1724 | /* PR 17512: file: 6f427532. */ |
1725 | if (s->size < extdynsize) | |
1726 | goto error_return; | |
eea6121a | 1727 | extdynend = extdyn + s->size; |
1036838a | 1728 | /* PR 17512: file: id:000006,sig:06,src:000000,op:flip4,pos:5664. |
07d6d2b8 | 1729 | Fix range check. */ |
1036838a | 1730 | for (; extdyn <= (extdynend - extdynsize); extdyn += extdynsize) |
252b5132 RH |
1731 | { |
1732 | Elf_Internal_Dyn dyn; | |
ad9563d6 | 1733 | const char *name = ""; |
252b5132 | 1734 | char ab[20]; |
0a1b45a2 | 1735 | bool stringp; |
ad9563d6 | 1736 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 1737 | |
217aa764 | 1738 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1739 | |
1740 | if (dyn.d_tag == DT_NULL) | |
1741 | break; | |
1742 | ||
0a1b45a2 | 1743 | stringp = false; |
252b5132 RH |
1744 | switch (dyn.d_tag) |
1745 | { | |
1746 | default: | |
ad9563d6 CM |
1747 | if (bed->elf_backend_get_target_dtag) |
1748 | name = (*bed->elf_backend_get_target_dtag) (dyn.d_tag); | |
1749 | ||
1750 | if (!strcmp (name, "")) | |
1751 | { | |
cd9af601 | 1752 | sprintf (ab, "%#" BFD_VMA_FMT "x", dyn.d_tag); |
ad9563d6 CM |
1753 | name = ab; |
1754 | } | |
252b5132 RH |
1755 | break; |
1756 | ||
0a1b45a2 | 1757 | case DT_NEEDED: name = "NEEDED"; stringp = true; break; |
252b5132 RH |
1758 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1759 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1760 | case DT_HASH: name = "HASH"; break; | |
1761 | case DT_STRTAB: name = "STRTAB"; break; | |
1762 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1763 | case DT_RELA: name = "RELA"; break; | |
1764 | case DT_RELASZ: name = "RELASZ"; break; | |
1765 | case DT_RELAENT: name = "RELAENT"; break; | |
1766 | case DT_STRSZ: name = "STRSZ"; break; | |
1767 | case DT_SYMENT: name = "SYMENT"; break; | |
1768 | case DT_INIT: name = "INIT"; break; | |
1769 | case DT_FINI: name = "FINI"; break; | |
0a1b45a2 AM |
1770 | case DT_SONAME: name = "SONAME"; stringp = true; break; |
1771 | case DT_RPATH: name = "RPATH"; stringp = true; break; | |
252b5132 RH |
1772 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1773 | case DT_REL: name = "REL"; break; | |
1774 | case DT_RELSZ: name = "RELSZ"; break; | |
1775 | case DT_RELENT: name = "RELENT"; break; | |
1776 | case DT_PLTREL: name = "PLTREL"; break; | |
1777 | case DT_DEBUG: name = "DEBUG"; break; | |
1778 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1779 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1780 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1781 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1782 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1783 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1784 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
0a1b45a2 | 1785 | case DT_RUNPATH: name = "RUNPATH"; stringp = true; break; |
94558834 L |
1786 | case DT_FLAGS: name = "FLAGS"; break; |
1787 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1788 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1789 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1790 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1791 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1792 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1793 | case DT_FEATURE: name = "FEATURE"; break; | |
1794 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1795 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1796 | case DT_SYMINENT: name = "SYMINENT"; break; | |
0a1b45a2 AM |
1797 | case DT_CONFIG: name = "CONFIG"; stringp = true; break; |
1798 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = true; break; | |
1799 | case DT_AUDIT: name = "AUDIT"; stringp = true; break; | |
94558834 L |
1800 | case DT_PLTPAD: name = "PLTPAD"; break; |
1801 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1802 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1803 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1804 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1805 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1806 | case DT_VERSYM: name = "VERSYM"; break; |
1807 | case DT_VERDEF: name = "VERDEF"; break; | |
1808 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1809 | case DT_VERNEED: name = "VERNEED"; break; | |
1810 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
0a1b45a2 | 1811 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = true; break; |
94558834 | 1812 | case DT_USED: name = "USED"; break; |
0a1b45a2 | 1813 | case DT_FILTER: name = "FILTER"; stringp = true; break; |
fdc90cb4 | 1814 | case DT_GNU_HASH: name = "GNU_HASH"; break; |
252b5132 RH |
1815 | } |
1816 | ||
ad9563d6 | 1817 | fprintf (f, " %-20s ", name); |
252b5132 | 1818 | if (! stringp) |
a1f3c56e AN |
1819 | { |
1820 | fprintf (f, "0x"); | |
1821 | bfd_fprintf_vma (abfd, f, dyn.d_un.d_val); | |
1822 | } | |
252b5132 RH |
1823 | else |
1824 | { | |
1825 | const char *string; | |
dc810e39 | 1826 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1827 | |
dc810e39 | 1828 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1829 | if (string == NULL) |
1830 | goto error_return; | |
1831 | fprintf (f, "%s", string); | |
1832 | } | |
1833 | fprintf (f, "\n"); | |
1834 | } | |
1835 | ||
1836 | free (dynbuf); | |
1837 | dynbuf = NULL; | |
1838 | } | |
1839 | ||
1840 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1841 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1842 | { | |
0a1b45a2 AM |
1843 | if (! _bfd_elf_slurp_version_tables (abfd, false)) |
1844 | return false; | |
252b5132 RH |
1845 | } |
1846 | ||
1847 | if (elf_dynverdef (abfd) != 0) | |
1848 | { | |
1849 | Elf_Internal_Verdef *t; | |
1850 | ||
1851 | fprintf (f, _("\nVersion definitions:\n")); | |
1852 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1853 | { | |
1854 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
d0fb9a8d JJ |
1855 | t->vd_flags, t->vd_hash, |
1856 | t->vd_nodename ? t->vd_nodename : "<corrupt>"); | |
1857 | if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL) | |
252b5132 RH |
1858 | { |
1859 | Elf_Internal_Verdaux *a; | |
1860 | ||
1861 | fprintf (f, "\t"); | |
1862 | for (a = t->vd_auxptr->vda_nextptr; | |
1863 | a != NULL; | |
1864 | a = a->vda_nextptr) | |
d0fb9a8d JJ |
1865 | fprintf (f, "%s ", |
1866 | a->vda_nodename ? a->vda_nodename : "<corrupt>"); | |
252b5132 RH |
1867 | fprintf (f, "\n"); |
1868 | } | |
1869 | } | |
1870 | } | |
1871 | ||
1872 | if (elf_dynverref (abfd) != 0) | |
1873 | { | |
1874 | Elf_Internal_Verneed *t; | |
1875 | ||
1876 | fprintf (f, _("\nVersion References:\n")); | |
1877 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1878 | { | |
1879 | Elf_Internal_Vernaux *a; | |
1880 | ||
d0fb9a8d JJ |
1881 | fprintf (f, _(" required from %s:\n"), |
1882 | t->vn_filename ? t->vn_filename : "<corrupt>"); | |
252b5132 RH |
1883 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
1884 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
d0fb9a8d JJ |
1885 | a->vna_flags, a->vna_other, |
1886 | a->vna_nodename ? a->vna_nodename : "<corrupt>"); | |
252b5132 RH |
1887 | } |
1888 | } | |
1889 | ||
0a1b45a2 | 1890 | return true; |
252b5132 RH |
1891 | |
1892 | error_return: | |
c9594989 | 1893 | free (dynbuf); |
0a1b45a2 | 1894 | return false; |
252b5132 RH |
1895 | } |
1896 | ||
7e6e972f L |
1897 | /* Get version name. If BASE_P is TRUE, return "Base" for VER_FLG_BASE |
1898 | and return symbol version for symbol version itself. */ | |
bb4d2ac2 L |
1899 | |
1900 | const char * | |
1081065c | 1901 | _bfd_elf_get_symbol_version_string (bfd *abfd, asymbol *symbol, |
0a1b45a2 AM |
1902 | bool base_p, |
1903 | bool *hidden) | |
bb4d2ac2 L |
1904 | { |
1905 | const char *version_string = NULL; | |
1906 | if (elf_dynversym (abfd) != 0 | |
1907 | && (elf_dynverdef (abfd) != 0 || elf_dynverref (abfd) != 0)) | |
1908 | { | |
1909 | unsigned int vernum = ((elf_symbol_type *) symbol)->version; | |
1910 | ||
1911 | *hidden = (vernum & VERSYM_HIDDEN) != 0; | |
1912 | vernum &= VERSYM_VERSION; | |
1913 | ||
1914 | if (vernum == 0) | |
1915 | version_string = ""; | |
1f6f5dba L |
1916 | else if (vernum == 1 |
1917 | && (vernum > elf_tdata (abfd)->cverdefs | |
1918 | || (elf_tdata (abfd)->verdef[0].vd_flags | |
1919 | == VER_FLG_BASE))) | |
7e6e972f | 1920 | version_string = base_p ? "Base" : ""; |
bb4d2ac2 | 1921 | else if (vernum <= elf_tdata (abfd)->cverdefs) |
7e6e972f L |
1922 | { |
1923 | const char *nodename | |
1924 | = elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
8d55d10a AM |
1925 | version_string = ""; |
1926 | if (base_p | |
1927 | || nodename == NULL | |
1928 | || symbol->name == NULL | |
1929 | || strcmp (symbol->name, nodename) != 0) | |
1930 | version_string = nodename; | |
7e6e972f | 1931 | } |
bb4d2ac2 L |
1932 | else |
1933 | { | |
1934 | Elf_Internal_Verneed *t; | |
1935 | ||
7a815dd5 | 1936 | version_string = _("<corrupt>"); |
bb4d2ac2 L |
1937 | for (t = elf_tdata (abfd)->verref; |
1938 | t != NULL; | |
1939 | t = t->vn_nextref) | |
1940 | { | |
1941 | Elf_Internal_Vernaux *a; | |
1942 | ||
1943 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1944 | { | |
1945 | if (a->vna_other == vernum) | |
1946 | { | |
1947 | version_string = a->vna_nodename; | |
1948 | break; | |
1949 | } | |
1950 | } | |
1951 | } | |
1952 | } | |
1953 | } | |
1954 | return version_string; | |
1955 | } | |
1956 | ||
252b5132 RH |
1957 | /* Display ELF-specific fields of a symbol. */ |
1958 | ||
1959 | void | |
217aa764 AM |
1960 | bfd_elf_print_symbol (bfd *abfd, |
1961 | void *filep, | |
1962 | asymbol *symbol, | |
1963 | bfd_print_symbol_type how) | |
252b5132 | 1964 | { |
a50b1753 | 1965 | FILE *file = (FILE *) filep; |
252b5132 RH |
1966 | switch (how) |
1967 | { | |
1968 | case bfd_print_symbol_name: | |
1969 | fprintf (file, "%s", symbol->name); | |
1970 | break; | |
1971 | case bfd_print_symbol_more: | |
1972 | fprintf (file, "elf "); | |
60b89a18 | 1973 | bfd_fprintf_vma (abfd, file, symbol->value); |
cd9af601 | 1974 | fprintf (file, " %x", symbol->flags); |
252b5132 RH |
1975 | break; |
1976 | case bfd_print_symbol_all: | |
1977 | { | |
4e8a9624 AM |
1978 | const char *section_name; |
1979 | const char *name = NULL; | |
9c5bfbb7 | 1980 | const struct elf_backend_data *bed; |
7a13edea | 1981 | unsigned char st_other; |
dbb410c3 | 1982 | bfd_vma val; |
bb4d2ac2 | 1983 | const char *version_string; |
0a1b45a2 | 1984 | bool hidden; |
c044fabd | 1985 | |
252b5132 | 1986 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1987 | |
1988 | bed = get_elf_backend_data (abfd); | |
1989 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1990 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1991 | |
1992 | if (name == NULL) | |
1993 | { | |
7ee38065 | 1994 | name = symbol->name; |
217aa764 | 1995 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1996 | } |
1997 | ||
252b5132 RH |
1998 | fprintf (file, " %s\t", section_name); |
1999 | /* Print the "other" value for a symbol. For common symbols, | |
2000 | we've already printed the size; now print the alignment. | |
2001 | For other symbols, we have no specified alignment, and | |
2002 | we've printed the address; now print the size. */ | |
dcf6c779 | 2003 | if (symbol->section && bfd_is_com_section (symbol->section)) |
dbb410c3 AM |
2004 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; |
2005 | else | |
2006 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
2007 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
2008 | |
2009 | /* If we have version information, print it. */ | |
60bb06bc L |
2010 | version_string = _bfd_elf_get_symbol_version_string (abfd, |
2011 | symbol, | |
0a1b45a2 | 2012 | true, |
60bb06bc | 2013 | &hidden); |
bb4d2ac2 | 2014 | if (version_string) |
252b5132 | 2015 | { |
bb4d2ac2 | 2016 | if (!hidden) |
252b5132 RH |
2017 | fprintf (file, " %-11s", version_string); |
2018 | else | |
2019 | { | |
2020 | int i; | |
2021 | ||
2022 | fprintf (file, " (%s)", version_string); | |
2023 | for (i = 10 - strlen (version_string); i > 0; --i) | |
2024 | putc (' ', file); | |
2025 | } | |
2026 | } | |
2027 | ||
2028 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 2029 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 2030 | |
7a13edea NC |
2031 | switch (st_other) |
2032 | { | |
2033 | case 0: break; | |
2034 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
2035 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
2036 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
2037 | default: | |
2038 | /* Some other non-defined flags are also present, so print | |
2039 | everything hex. */ | |
2040 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
2041 | } | |
252b5132 | 2042 | |
587ff49e | 2043 | fprintf (file, " %s", name); |
252b5132 RH |
2044 | } |
2045 | break; | |
2046 | } | |
2047 | } | |
252b5132 RH |
2048 | \f |
2049 | /* ELF .o/exec file reading */ | |
2050 | ||
c044fabd | 2051 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 2052 | |
0a1b45a2 | 2053 | bool |
217aa764 | 2054 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 | 2055 | { |
4fbb74a6 AM |
2056 | Elf_Internal_Shdr *hdr; |
2057 | Elf_Internal_Ehdr *ehdr; | |
2058 | const struct elf_backend_data *bed; | |
90937f86 | 2059 | const char *name; |
0a1b45a2 | 2060 | bool ret = true; |
252b5132 | 2061 | |
4fbb74a6 | 2062 | if (shindex >= elf_numsections (abfd)) |
0a1b45a2 | 2063 | return false; |
4fbb74a6 | 2064 | |
a86c6c19 AM |
2065 | /* PR17512: A corrupt ELF binary might contain a loop of sections via |
2066 | sh_link or sh_info. Detect this here, by refusing to load a | |
2067 | section that we are already in the process of loading. */ | |
2068 | if (elf_tdata (abfd)->being_created[shindex]) | |
bf67003b | 2069 | { |
a86c6c19 AM |
2070 | _bfd_error_handler |
2071 | (_("%pB: warning: loop in section dependencies detected"), abfd); | |
0a1b45a2 | 2072 | return false; |
bf67003b | 2073 | } |
0a1b45a2 | 2074 | elf_tdata (abfd)->being_created[shindex] = true; |
bf67003b | 2075 | |
4fbb74a6 AM |
2076 | hdr = elf_elfsections (abfd)[shindex]; |
2077 | ehdr = elf_elfheader (abfd); | |
2078 | name = bfd_elf_string_from_elf_section (abfd, ehdr->e_shstrndx, | |
1b3a8575 | 2079 | hdr->sh_name); |
933d961a | 2080 | if (name == NULL) |
bf67003b | 2081 | goto fail; |
252b5132 | 2082 | |
4fbb74a6 | 2083 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
2084 | switch (hdr->sh_type) |
2085 | { | |
2086 | case SHT_NULL: | |
2087 | /* Inactive section. Throw it away. */ | |
bf67003b | 2088 | goto success; |
252b5132 | 2089 | |
bf67003b NC |
2090 | case SHT_PROGBITS: /* Normal section with contents. */ |
2091 | case SHT_NOBITS: /* .bss section. */ | |
2092 | case SHT_HASH: /* .hash section. */ | |
2093 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
2094 | case SHT_INIT_ARRAY: /* .init_array section. */ |
2095 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
2096 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 2097 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
fdc90cb4 | 2098 | case SHT_GNU_HASH: /* .gnu.hash section. */ |
bf67003b NC |
2099 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
2100 | goto success; | |
252b5132 | 2101 | |
797fc050 | 2102 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 2103 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
bf67003b NC |
2104 | goto fail; |
2105 | ||
cfcac11d NC |
2106 | if (hdr->sh_link > elf_numsections (abfd)) |
2107 | { | |
caa83f8b | 2108 | /* PR 10478: Accept Solaris binaries with a sh_link |
cfcac11d NC |
2109 | field set to SHN_BEFORE or SHN_AFTER. */ |
2110 | switch (bfd_get_arch (abfd)) | |
2111 | { | |
caa83f8b | 2112 | case bfd_arch_i386: |
cfcac11d NC |
2113 | case bfd_arch_sparc: |
2114 | if (hdr->sh_link == (SHN_LORESERVE & 0xffff) /* SHN_BEFORE */ | |
2115 | || hdr->sh_link == ((SHN_LORESERVE + 1) & 0xffff) /* SHN_AFTER */) | |
2116 | break; | |
2117 | /* Otherwise fall through. */ | |
2118 | default: | |
bf67003b | 2119 | goto fail; |
cfcac11d NC |
2120 | } |
2121 | } | |
2122 | else if (elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
bf67003b | 2123 | goto fail; |
cfcac11d | 2124 | else if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
797fc050 AM |
2125 | { |
2126 | Elf_Internal_Shdr *dynsymhdr; | |
2127 | ||
2128 | /* The shared libraries distributed with hpux11 have a bogus | |
2129 | sh_link field for the ".dynamic" section. Find the | |
2130 | string table for the ".dynsym" section instead. */ | |
2131 | if (elf_dynsymtab (abfd) != 0) | |
2132 | { | |
2133 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
2134 | hdr->sh_link = dynsymhdr->sh_link; | |
2135 | } | |
2136 | else | |
2137 | { | |
2138 | unsigned int i, num_sec; | |
2139 | ||
2140 | num_sec = elf_numsections (abfd); | |
2141 | for (i = 1; i < num_sec; i++) | |
2142 | { | |
2143 | dynsymhdr = elf_elfsections (abfd)[i]; | |
2144 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
2145 | { | |
2146 | hdr->sh_link = dynsymhdr->sh_link; | |
2147 | break; | |
2148 | } | |
2149 | } | |
2150 | } | |
2151 | } | |
bf67003b | 2152 | goto success; |
797fc050 | 2153 | |
bf67003b | 2154 | case SHT_SYMTAB: /* A symbol table. */ |
252b5132 | 2155 | if (elf_onesymtab (abfd) == shindex) |
bf67003b | 2156 | goto success; |
252b5132 | 2157 | |
a50b2160 | 2158 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
bf67003b NC |
2159 | goto fail; |
2160 | ||
3337c1e5 | 2161 | if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size) |
eee3b786 AM |
2162 | { |
2163 | if (hdr->sh_size != 0) | |
bf67003b | 2164 | goto fail; |
eee3b786 AM |
2165 | /* Some assemblers erroneously set sh_info to one with a |
2166 | zero sh_size. ld sees this as a global symbol count | |
2167 | of (unsigned) -1. Fix it here. */ | |
2168 | hdr->sh_info = 0; | |
bf67003b | 2169 | goto success; |
eee3b786 | 2170 | } |
bf67003b | 2171 | |
16ad13ec NC |
2172 | /* PR 18854: A binary might contain more than one symbol table. |
2173 | Unusual, but possible. Warn, but continue. */ | |
2174 | if (elf_onesymtab (abfd) != 0) | |
2175 | { | |
4eca0228 | 2176 | _bfd_error_handler |
695344c0 | 2177 | /* xgettext:c-format */ |
871b3ab2 | 2178 | (_("%pB: warning: multiple symbol tables detected" |
63a5468a | 2179 | " - ignoring the table in section %u"), |
16ad13ec NC |
2180 | abfd, shindex); |
2181 | goto success; | |
2182 | } | |
252b5132 | 2183 | elf_onesymtab (abfd) = shindex; |
6a40cf0c NC |
2184 | elf_symtab_hdr (abfd) = *hdr; |
2185 | elf_elfsections (abfd)[shindex] = hdr = & elf_symtab_hdr (abfd); | |
252b5132 RH |
2186 | abfd->flags |= HAS_SYMS; |
2187 | ||
2188 | /* Sometimes a shared object will map in the symbol table. If | |
08a40648 AM |
2189 | SHF_ALLOC is set, and this is a shared object, then we also |
2190 | treat this section as a BFD section. We can not base the | |
2191 | decision purely on SHF_ALLOC, because that flag is sometimes | |
2192 | set in a relocatable object file, which would confuse the | |
2193 | linker. */ | |
252b5132 RH |
2194 | if ((hdr->sh_flags & SHF_ALLOC) != 0 |
2195 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
2196 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2197 | shindex)) | |
bf67003b | 2198 | goto fail; |
252b5132 | 2199 | |
1b3a8575 AM |
2200 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
2201 | can't read symbols without that section loaded as well. It | |
2202 | is most likely specified by the next section header. */ | |
6a40cf0c NC |
2203 | { |
2204 | elf_section_list * entry; | |
2205 | unsigned int i, num_sec; | |
1b3a8575 | 2206 | |
6a40cf0c NC |
2207 | for (entry = elf_symtab_shndx_list (abfd); entry != NULL; entry = entry->next) |
2208 | if (entry->hdr.sh_link == shindex) | |
2209 | goto success; | |
2210 | ||
2211 | num_sec = elf_numsections (abfd); | |
2212 | for (i = shindex + 1; i < num_sec; i++) | |
2213 | { | |
2214 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
2215 | ||
2216 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
2217 | && hdr2->sh_link == shindex) | |
2218 | break; | |
2219 | } | |
2220 | ||
2221 | if (i == num_sec) | |
2222 | for (i = 1; i < shindex; i++) | |
1b3a8575 AM |
2223 | { |
2224 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
6a40cf0c | 2225 | |
1b3a8575 AM |
2226 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX |
2227 | && hdr2->sh_link == shindex) | |
2228 | break; | |
2229 | } | |
6a40cf0c NC |
2230 | |
2231 | if (i != shindex) | |
2232 | ret = bfd_section_from_shdr (abfd, i); | |
2233 | /* else FIXME: we have failed to find the symbol table - should we issue an error ? */ | |
2234 | goto success; | |
2235 | } | |
252b5132 | 2236 | |
bf67003b | 2237 | case SHT_DYNSYM: /* A dynamic symbol table. */ |
252b5132 | 2238 | if (elf_dynsymtab (abfd) == shindex) |
bf67003b | 2239 | goto success; |
252b5132 | 2240 | |
a50b2160 | 2241 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
bf67003b NC |
2242 | goto fail; |
2243 | ||
eee3b786 AM |
2244 | if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size) |
2245 | { | |
2246 | if (hdr->sh_size != 0) | |
bf67003b NC |
2247 | goto fail; |
2248 | ||
eee3b786 AM |
2249 | /* Some linkers erroneously set sh_info to one with a |
2250 | zero sh_size. ld sees this as a global symbol count | |
2251 | of (unsigned) -1. Fix it here. */ | |
2252 | hdr->sh_info = 0; | |
bf67003b | 2253 | goto success; |
eee3b786 | 2254 | } |
bf67003b | 2255 | |
16ad13ec NC |
2256 | /* PR 18854: A binary might contain more than one dynamic symbol table. |
2257 | Unusual, but possible. Warn, but continue. */ | |
2258 | if (elf_dynsymtab (abfd) != 0) | |
2259 | { | |
4eca0228 | 2260 | _bfd_error_handler |
695344c0 | 2261 | /* xgettext:c-format */ |
871b3ab2 | 2262 | (_("%pB: warning: multiple dynamic symbol tables detected" |
63a5468a | 2263 | " - ignoring the table in section %u"), |
16ad13ec NC |
2264 | abfd, shindex); |
2265 | goto success; | |
2266 | } | |
252b5132 RH |
2267 | elf_dynsymtab (abfd) = shindex; |
2268 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
2269 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
2270 | abfd->flags |= HAS_SYMS; | |
2271 | ||
2272 | /* Besides being a symbol table, we also treat this as a regular | |
2273 | section, so that objcopy can handle it. */ | |
bf67003b NC |
2274 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
2275 | goto success; | |
252b5132 | 2276 | |
bf67003b | 2277 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections. */ |
6a40cf0c NC |
2278 | { |
2279 | elf_section_list * entry; | |
9ad5cbcf | 2280 | |
6a40cf0c NC |
2281 | for (entry = elf_symtab_shndx_list (abfd); entry != NULL; entry = entry->next) |
2282 | if (entry->ndx == shindex) | |
2283 | goto success; | |
07d6d2b8 | 2284 | |
7a6e0d89 | 2285 | entry = bfd_alloc (abfd, sizeof (*entry)); |
6a40cf0c NC |
2286 | if (entry == NULL) |
2287 | goto fail; | |
2288 | entry->ndx = shindex; | |
2289 | entry->hdr = * hdr; | |
2290 | entry->next = elf_symtab_shndx_list (abfd); | |
2291 | elf_symtab_shndx_list (abfd) = entry; | |
2292 | elf_elfsections (abfd)[shindex] = & entry->hdr; | |
2293 | goto success; | |
2294 | } | |
9ad5cbcf | 2295 | |
bf67003b | 2296 | case SHT_STRTAB: /* A string table. */ |
252b5132 | 2297 | if (hdr->bfd_section != NULL) |
bf67003b NC |
2298 | goto success; |
2299 | ||
252b5132 RH |
2300 | if (ehdr->e_shstrndx == shindex) |
2301 | { | |
2302 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
2303 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
bf67003b | 2304 | goto success; |
252b5132 | 2305 | } |
bf67003b | 2306 | |
1b3a8575 AM |
2307 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
2308 | { | |
2309 | symtab_strtab: | |
2310 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
2311 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
bf67003b | 2312 | goto success; |
1b3a8575 | 2313 | } |
bf67003b | 2314 | |
1b3a8575 AM |
2315 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) |
2316 | { | |
2317 | dynsymtab_strtab: | |
2318 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
2319 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
2320 | elf_elfsections (abfd)[shindex] = hdr; | |
2321 | /* We also treat this as a regular section, so that objcopy | |
2322 | can handle it. */ | |
bf67003b NC |
2323 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2324 | shindex); | |
2325 | goto success; | |
1b3a8575 | 2326 | } |
252b5132 | 2327 | |
1b3a8575 AM |
2328 | /* If the string table isn't one of the above, then treat it as a |
2329 | regular section. We need to scan all the headers to be sure, | |
2330 | just in case this strtab section appeared before the above. */ | |
2331 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
2332 | { | |
2333 | unsigned int i, num_sec; | |
252b5132 | 2334 | |
1b3a8575 AM |
2335 | num_sec = elf_numsections (abfd); |
2336 | for (i = 1; i < num_sec; i++) | |
2337 | { | |
2338 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
2339 | if (hdr2->sh_link == shindex) | |
2340 | { | |
933d961a JJ |
2341 | /* Prevent endless recursion on broken objects. */ |
2342 | if (i == shindex) | |
bf67003b | 2343 | goto fail; |
1b3a8575 | 2344 | if (! bfd_section_from_shdr (abfd, i)) |
bf67003b | 2345 | goto fail; |
1b3a8575 AM |
2346 | if (elf_onesymtab (abfd) == i) |
2347 | goto symtab_strtab; | |
2348 | if (elf_dynsymtab (abfd) == i) | |
2349 | goto dynsymtab_strtab; | |
2350 | } | |
2351 | } | |
2352 | } | |
bf67003b NC |
2353 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
2354 | goto success; | |
252b5132 RH |
2355 | |
2356 | case SHT_REL: | |
2357 | case SHT_RELA: | |
2358 | /* *These* do a lot of work -- but build no sections! */ | |
2359 | { | |
2360 | asection *target_sect; | |
d4730f92 | 2361 | Elf_Internal_Shdr *hdr2, **p_hdr; |
9ad5cbcf | 2362 | unsigned int num_sec = elf_numsections (abfd); |
d4730f92 | 2363 | struct bfd_elf_section_data *esdt; |
252b5132 | 2364 | |
aa2ca951 JJ |
2365 | if (hdr->sh_entsize |
2366 | != (bfd_size_type) (hdr->sh_type == SHT_REL | |
a50b2160 | 2367 | ? bed->s->sizeof_rel : bed->s->sizeof_rela)) |
bf67003b | 2368 | goto fail; |
a50b2160 | 2369 | |
03ae5f59 | 2370 | /* Check for a bogus link to avoid crashing. */ |
4fbb74a6 | 2371 | if (hdr->sh_link >= num_sec) |
03ae5f59 | 2372 | { |
4eca0228 | 2373 | _bfd_error_handler |
695344c0 | 2374 | /* xgettext:c-format */ |
871b3ab2 | 2375 | (_("%pB: invalid link %u for reloc section %s (index %u)"), |
4eca0228 | 2376 | abfd, hdr->sh_link, name, shindex); |
bf67003b NC |
2377 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2378 | shindex); | |
2379 | goto success; | |
03ae5f59 ILT |
2380 | } |
2381 | ||
252b5132 RH |
2382 | /* For some incomprehensible reason Oracle distributes |
2383 | libraries for Solaris in which some of the objects have | |
2384 | bogus sh_link fields. It would be nice if we could just | |
2385 | reject them, but, unfortunately, some people need to use | |
2386 | them. We scan through the section headers; if we find only | |
2387 | one suitable symbol table, we clobber the sh_link to point | |
83b89087 L |
2388 | to it. I hope this doesn't break anything. |
2389 | ||
2390 | Don't do it on executable nor shared library. */ | |
2391 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0 | |
2392 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
252b5132 RH |
2393 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) |
2394 | { | |
9ad5cbcf | 2395 | unsigned int scan; |
252b5132 RH |
2396 | int found; |
2397 | ||
2398 | found = 0; | |
9ad5cbcf | 2399 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
2400 | { |
2401 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
2402 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
2403 | { | |
2404 | if (found != 0) | |
2405 | { | |
2406 | found = 0; | |
2407 | break; | |
2408 | } | |
2409 | found = scan; | |
2410 | } | |
2411 | } | |
2412 | if (found != 0) | |
2413 | hdr->sh_link = found; | |
2414 | } | |
2415 | ||
2416 | /* Get the symbol table. */ | |
1b3a8575 AM |
2417 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
2418 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 2419 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
bf67003b | 2420 | goto fail; |
252b5132 | 2421 | |
a4bcd733 AM |
2422 | /* If this is an alloc section in an executable or shared |
2423 | library, or the reloc section does not use the main symbol | |
2424 | table we don't treat it as a reloc section. BFD can't | |
2425 | adequately represent such a section, so at least for now, | |
2426 | we don't try. We just present it as a normal section. We | |
2427 | also can't use it as a reloc section if it points to the | |
2428 | null section, an invalid section, another reloc section, or | |
2429 | its sh_link points to the null section. */ | |
2430 | if (((abfd->flags & (DYNAMIC | EXEC_P)) != 0 | |
2431 | && (hdr->sh_flags & SHF_ALLOC) != 0) | |
83b89087 | 2432 | || hdr->sh_link == SHN_UNDEF |
a4bcd733 | 2433 | || hdr->sh_link != elf_onesymtab (abfd) |
185ef66d | 2434 | || hdr->sh_info == SHN_UNDEF |
185ef66d AM |
2435 | || hdr->sh_info >= num_sec |
2436 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL | |
2437 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA) | |
bf67003b NC |
2438 | { |
2439 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
2440 | shindex); | |
2441 | goto success; | |
2442 | } | |
252b5132 RH |
2443 | |
2444 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
bf67003b NC |
2445 | goto fail; |
2446 | ||
252b5132 RH |
2447 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
2448 | if (target_sect == NULL) | |
bf67003b | 2449 | goto fail; |
252b5132 | 2450 | |
d4730f92 BS |
2451 | esdt = elf_section_data (target_sect); |
2452 | if (hdr->sh_type == SHT_RELA) | |
2453 | p_hdr = &esdt->rela.hdr; | |
252b5132 | 2454 | else |
d4730f92 BS |
2455 | p_hdr = &esdt->rel.hdr; |
2456 | ||
a7ba3896 NC |
2457 | /* PR 17512: file: 0b4f81b7. |
2458 | Also see PR 24456, for a file which deliberately has two reloc | |
2459 | sections. */ | |
06614111 | 2460 | if (*p_hdr != NULL) |
a7ba3896 | 2461 | { |
a859124d | 2462 | if (!bed->init_secondary_reloc_section (abfd, hdr, name, shindex)) |
a8e14f4c NC |
2463 | { |
2464 | _bfd_error_handler | |
2465 | /* xgettext:c-format */ | |
a859124d AM |
2466 | (_("%pB: warning: secondary relocation section '%s' " |
2467 | "for section %pA found - ignoring"), | |
a8e14f4c NC |
2468 | abfd, name, target_sect); |
2469 | } | |
a7ba3896 NC |
2470 | goto success; |
2471 | } | |
a8e14f4c | 2472 | |
ef53be89 | 2473 | hdr2 = (Elf_Internal_Shdr *) bfd_alloc (abfd, sizeof (*hdr2)); |
d4730f92 | 2474 | if (hdr2 == NULL) |
bf67003b | 2475 | goto fail; |
252b5132 | 2476 | *hdr2 = *hdr; |
d4730f92 | 2477 | *p_hdr = hdr2; |
252b5132 | 2478 | elf_elfsections (abfd)[shindex] = hdr2; |
056bafd4 MR |
2479 | target_sect->reloc_count += (NUM_SHDR_ENTRIES (hdr) |
2480 | * bed->s->int_rels_per_ext_rel); | |
252b5132 RH |
2481 | target_sect->flags |= SEC_RELOC; |
2482 | target_sect->relocation = NULL; | |
2483 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
2484 | /* In the section to which the relocations apply, mark whether |
2485 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 2486 | if (hdr->sh_size != 0) |
d4730f92 BS |
2487 | { |
2488 | if (hdr->sh_type == SHT_RELA) | |
2489 | target_sect->use_rela_p = 1; | |
2490 | } | |
252b5132 | 2491 | abfd->flags |= HAS_RELOC; |
bf67003b | 2492 | goto success; |
252b5132 | 2493 | } |
252b5132 RH |
2494 | |
2495 | case SHT_GNU_verdef: | |
2496 | elf_dynverdef (abfd) = shindex; | |
2497 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
bf67003b NC |
2498 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
2499 | goto success; | |
252b5132 RH |
2500 | |
2501 | case SHT_GNU_versym: | |
a50b2160 | 2502 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
bf67003b NC |
2503 | goto fail; |
2504 | ||
252b5132 RH |
2505 | elf_dynversym (abfd) = shindex; |
2506 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
bf67003b NC |
2507 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
2508 | goto success; | |
252b5132 RH |
2509 | |
2510 | case SHT_GNU_verneed: | |
2511 | elf_dynverref (abfd) = shindex; | |
2512 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
bf67003b NC |
2513 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
2514 | goto success; | |
252b5132 RH |
2515 | |
2516 | case SHT_SHLIB: | |
bf67003b | 2517 | goto success; |
252b5132 | 2518 | |
dbb410c3 | 2519 | case SHT_GROUP: |
44534af3 | 2520 | if (! IS_VALID_GROUP_SECTION_HEADER (hdr, GRP_ENTRY_SIZE)) |
bf67003b NC |
2521 | goto fail; |
2522 | ||
6dc132d9 | 2523 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
bf67003b NC |
2524 | goto fail; |
2525 | ||
bf67003b | 2526 | goto success; |
dbb410c3 | 2527 | |
252b5132 | 2528 | default: |
104d59d1 JM |
2529 | /* Possibly an attributes section. */ |
2530 | if (hdr->sh_type == SHT_GNU_ATTRIBUTES | |
2531 | || hdr->sh_type == bed->obj_attrs_section_type) | |
2532 | { | |
2533 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
bf67003b | 2534 | goto fail; |
104d59d1 | 2535 | _bfd_elf_parse_attributes (abfd, hdr); |
bf67003b | 2536 | goto success; |
104d59d1 JM |
2537 | } |
2538 | ||
252b5132 | 2539 | /* Check for any processor-specific section types. */ |
3eb70a79 | 2540 | if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex)) |
bf67003b | 2541 | goto success; |
3eb70a79 L |
2542 | |
2543 | if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER) | |
2544 | { | |
2545 | if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
2546 | /* FIXME: How to properly handle allocated section reserved | |
2547 | for applications? */ | |
4eca0228 | 2548 | _bfd_error_handler |
695344c0 | 2549 | /* xgettext:c-format */ |
871b3ab2 | 2550 | (_("%pB: unknown type [%#x] section `%s'"), |
76cfced5 | 2551 | abfd, hdr->sh_type, name); |
3eb70a79 | 2552 | else |
bf67003b NC |
2553 | { |
2554 | /* Allow sections reserved for applications. */ | |
2555 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
2556 | shindex); | |
2557 | goto success; | |
2558 | } | |
3eb70a79 L |
2559 | } |
2560 | else if (hdr->sh_type >= SHT_LOPROC | |
2561 | && hdr->sh_type <= SHT_HIPROC) | |
2562 | /* FIXME: We should handle this section. */ | |
4eca0228 | 2563 | _bfd_error_handler |
695344c0 | 2564 | /* xgettext:c-format */ |
871b3ab2 | 2565 | (_("%pB: unknown type [%#x] section `%s'"), |
76cfced5 | 2566 | abfd, hdr->sh_type, name); |
3eb70a79 | 2567 | else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS) |
ff15b240 NC |
2568 | { |
2569 | /* Unrecognised OS-specific sections. */ | |
2570 | if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0) | |
2571 | /* SHF_OS_NONCONFORMING indicates that special knowledge is | |
08a40648 | 2572 | required to correctly process the section and the file should |
ff15b240 | 2573 | be rejected with an error message. */ |
4eca0228 | 2574 | _bfd_error_handler |
695344c0 | 2575 | /* xgettext:c-format */ |
871b3ab2 | 2576 | (_("%pB: unknown type [%#x] section `%s'"), |
76cfced5 | 2577 | abfd, hdr->sh_type, name); |
ff15b240 | 2578 | else |
bf67003b NC |
2579 | { |
2580 | /* Otherwise it should be processed. */ | |
2581 | ret = _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
2582 | goto success; | |
2583 | } | |
ff15b240 | 2584 | } |
3eb70a79 L |
2585 | else |
2586 | /* FIXME: We should handle this section. */ | |
4eca0228 | 2587 | _bfd_error_handler |
695344c0 | 2588 | /* xgettext:c-format */ |
871b3ab2 | 2589 | (_("%pB: unknown type [%#x] section `%s'"), |
76cfced5 | 2590 | abfd, hdr->sh_type, name); |
3eb70a79 | 2591 | |
bf67003b | 2592 | goto fail; |
252b5132 RH |
2593 | } |
2594 | ||
bf67003b | 2595 | fail: |
0a1b45a2 | 2596 | ret = false; |
bf67003b | 2597 | success: |
0a1b45a2 | 2598 | elf_tdata (abfd)->being_created[shindex] = false; |
bf67003b | 2599 | return ret; |
252b5132 RH |
2600 | } |
2601 | ||
87d72d41 | 2602 | /* Return the local symbol specified by ABFD, R_SYMNDX. */ |
ec338859 | 2603 | |
87d72d41 AM |
2604 | Elf_Internal_Sym * |
2605 | bfd_sym_from_r_symndx (struct sym_cache *cache, | |
2606 | bfd *abfd, | |
2607 | unsigned long r_symndx) | |
ec338859 | 2608 | { |
ec338859 AM |
2609 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
2610 | ||
a5d1b3b5 AM |
2611 | if (cache->abfd != abfd || cache->indx[ent] != r_symndx) |
2612 | { | |
2613 | Elf_Internal_Shdr *symtab_hdr; | |
2614 | unsigned char esym[sizeof (Elf64_External_Sym)]; | |
2615 | Elf_External_Sym_Shndx eshndx; | |
ec338859 | 2616 | |
a5d1b3b5 AM |
2617 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2618 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, | |
87d72d41 | 2619 | &cache->sym[ent], esym, &eshndx) == NULL) |
a5d1b3b5 | 2620 | return NULL; |
9ad5cbcf | 2621 | |
a5d1b3b5 AM |
2622 | if (cache->abfd != abfd) |
2623 | { | |
2624 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2625 | cache->abfd = abfd; | |
2626 | } | |
2627 | cache->indx[ent] = r_symndx; | |
ec338859 | 2628 | } |
a5d1b3b5 | 2629 | |
87d72d41 | 2630 | return &cache->sym[ent]; |
ec338859 AM |
2631 | } |
2632 | ||
252b5132 RH |
2633 | /* Given an ELF section number, retrieve the corresponding BFD |
2634 | section. */ | |
2635 | ||
2636 | asection * | |
91d6fa6a | 2637 | bfd_section_from_elf_index (bfd *abfd, unsigned int sec_index) |
252b5132 | 2638 | { |
91d6fa6a | 2639 | if (sec_index >= elf_numsections (abfd)) |
252b5132 | 2640 | return NULL; |
91d6fa6a | 2641 | return elf_elfsections (abfd)[sec_index]->bfd_section; |
252b5132 RH |
2642 | } |
2643 | ||
b35d266b | 2644 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 2645 | { |
0112cd26 | 2646 | { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 2647 | { NULL, 0, 0, 0, 0 } |
7f4d3958 L |
2648 | }; |
2649 | ||
b35d266b | 2650 | static const struct bfd_elf_special_section special_sections_c[] = |
7f4d3958 | 2651 | { |
0112cd26 | 2652 | { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 }, |
1ff6de03 | 2653 | { STRING_COMMA_LEN (".ctf"), 0, SHT_PROGBITS, 0 }, |
07d6d2b8 | 2654 | { NULL, 0, 0, 0, 0 } |
7f4d3958 L |
2655 | }; |
2656 | ||
b35d266b | 2657 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 2658 | { |
07d6d2b8 AM |
2659 | { STRING_COMMA_LEN (".data"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2660 | { STRING_COMMA_LEN (".data1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
a9a72a65 DE |
2661 | /* There are more DWARF sections than these, but they needn't be added here |
2662 | unless you have to cope with broken compilers that don't emit section | |
2663 | attributes or you want to help the user writing assembler. */ | |
07d6d2b8 AM |
2664 | { STRING_COMMA_LEN (".debug"), 0, SHT_PROGBITS, 0 }, |
2665 | { STRING_COMMA_LEN (".debug_line"), 0, SHT_PROGBITS, 0 }, | |
2666 | { STRING_COMMA_LEN (".debug_info"), 0, SHT_PROGBITS, 0 }, | |
2667 | { STRING_COMMA_LEN (".debug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
0112cd26 | 2668 | { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 }, |
07d6d2b8 AM |
2669 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, SHF_ALLOC }, |
2670 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, SHF_ALLOC }, | |
2671 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, SHF_ALLOC }, | |
2672 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2673 | }; |
2674 | ||
b35d266b | 2675 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 | 2676 | { |
07d6d2b8 | 2677 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
6f9dbcd4 | 2678 | { STRING_COMMA_LEN (".fini_array"), -2, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 2679 | { NULL, 0 , 0, 0, 0 } |
7f4d3958 L |
2680 | }; |
2681 | ||
b35d266b | 2682 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 | 2683 | { |
0112cd26 | 2684 | { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2c6f3e56 JL |
2685 | { STRING_COMMA_LEN (".gnu.linkonce.n"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2686 | { STRING_COMMA_LEN (".gnu.linkonce.p"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
07d6d2b8 AM |
2687 | { STRING_COMMA_LEN (".gnu.lto_"), -1, SHT_PROGBITS, SHF_EXCLUDE }, |
2688 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2689 | { STRING_COMMA_LEN (".gnu.version"), 0, SHT_GNU_versym, 0 }, | |
0112cd26 NC |
2690 | { STRING_COMMA_LEN (".gnu.version_d"), 0, SHT_GNU_verdef, 0 }, |
2691 | { STRING_COMMA_LEN (".gnu.version_r"), 0, SHT_GNU_verneed, 0 }, | |
07d6d2b8 AM |
2692 | { STRING_COMMA_LEN (".gnu.liblist"), 0, SHT_GNU_LIBLIST, SHF_ALLOC }, |
2693 | { STRING_COMMA_LEN (".gnu.conflict"), 0, SHT_RELA, SHF_ALLOC }, | |
2694 | { STRING_COMMA_LEN (".gnu.hash"), 0, SHT_GNU_HASH, SHF_ALLOC }, | |
2695 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2696 | }; |
2697 | ||
b35d266b | 2698 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 | 2699 | { |
07d6d2b8 AM |
2700 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, SHF_ALLOC }, |
2701 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2702 | }; |
2703 | ||
b35d266b | 2704 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 | 2705 | { |
07d6d2b8 | 2706 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
6f9dbcd4 | 2707 | { STRING_COMMA_LEN (".init_array"), -2, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
2708 | { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 }, |
2709 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2710 | }; |
2711 | ||
b35d266b | 2712 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 | 2713 | { |
0112cd26 | 2714 | { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 }, |
07d6d2b8 | 2715 | { NULL, 0, 0, 0, 0 } |
7f4d3958 L |
2716 | }; |
2717 | ||
b35d266b | 2718 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2719 | { |
2c6f3e56 | 2720 | { STRING_COMMA_LEN (".noinit"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
0112cd26 | 2721 | { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 }, |
07d6d2b8 AM |
2722 | { STRING_COMMA_LEN (".note"), -1, SHT_NOTE, 0 }, |
2723 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2724 | }; |
2725 | ||
b35d266b | 2726 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 | 2727 | { |
f5e98b7d | 2728 | { STRING_COMMA_LEN (".persistent.bss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2c6f3e56 | 2729 | { STRING_COMMA_LEN (".persistent"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
6f9dbcd4 | 2730 | { STRING_COMMA_LEN (".preinit_array"), -2, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
2731 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2732 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2733 | }; |
2734 | ||
b35d266b | 2735 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 | 2736 | { |
0112cd26 NC |
2737 | { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC }, |
2738 | { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
07d6d2b8 AM |
2739 | { STRING_COMMA_LEN (".rela"), -1, SHT_RELA, 0 }, |
2740 | { STRING_COMMA_LEN (".rel"), -1, SHT_REL, 0 }, | |
2741 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2742 | }; |
2743 | ||
b35d266b | 2744 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 | 2745 | { |
0112cd26 NC |
2746 | { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 }, |
2747 | { STRING_COMMA_LEN (".strtab"), 0, SHT_STRTAB, 0 }, | |
2748 | { STRING_COMMA_LEN (".symtab"), 0, SHT_SYMTAB, 0 }, | |
60ff4dc4 HPN |
2749 | /* See struct bfd_elf_special_section declaration for the semantics of |
2750 | this special case where .prefix_length != strlen (.prefix). */ | |
2751 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
07d6d2b8 | 2752 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
2753 | }; |
2754 | ||
b35d266b | 2755 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 | 2756 | { |
07d6d2b8 AM |
2757 | { STRING_COMMA_LEN (".text"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2758 | { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
0112cd26 | 2759 | { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, |
07d6d2b8 | 2760 | { NULL, 0, 0, 0, 0 } |
7f4d3958 L |
2761 | }; |
2762 | ||
1b315056 CS |
2763 | static const struct bfd_elf_special_section special_sections_z[] = |
2764 | { | |
07d6d2b8 AM |
2765 | { STRING_COMMA_LEN (".zdebug_line"), 0, SHT_PROGBITS, 0 }, |
2766 | { STRING_COMMA_LEN (".zdebug_info"), 0, SHT_PROGBITS, 0 }, | |
1b315056 CS |
2767 | { STRING_COMMA_LEN (".zdebug_abbrev"), 0, SHT_PROGBITS, 0 }, |
2768 | { STRING_COMMA_LEN (".zdebug_aranges"), 0, SHT_PROGBITS, 0 }, | |
07d6d2b8 | 2769 | { NULL, 0, 0, 0, 0 } |
1b315056 CS |
2770 | }; |
2771 | ||
e4c93b56 | 2772 | static const struct bfd_elf_special_section * const special_sections[] = |
7f4d3958 | 2773 | { |
7f4d3958 | 2774 | special_sections_b, /* 'b' */ |
98ece1b3 | 2775 | special_sections_c, /* 'c' */ |
7f4d3958 L |
2776 | special_sections_d, /* 'd' */ |
2777 | NULL, /* 'e' */ | |
2778 | special_sections_f, /* 'f' */ | |
2779 | special_sections_g, /* 'g' */ | |
2780 | special_sections_h, /* 'h' */ | |
2781 | special_sections_i, /* 'i' */ | |
2782 | NULL, /* 'j' */ | |
2783 | NULL, /* 'k' */ | |
2784 | special_sections_l, /* 'l' */ | |
2785 | NULL, /* 'm' */ | |
2786 | special_sections_n, /* 'n' */ | |
2787 | NULL, /* 'o' */ | |
2788 | special_sections_p, /* 'p' */ | |
2789 | NULL, /* 'q' */ | |
2790 | special_sections_r, /* 'r' */ | |
2791 | special_sections_s, /* 's' */ | |
2792 | special_sections_t, /* 't' */ | |
1b315056 CS |
2793 | NULL, /* 'u' */ |
2794 | NULL, /* 'v' */ | |
2795 | NULL, /* 'w' */ | |
2796 | NULL, /* 'x' */ | |
2797 | NULL, /* 'y' */ | |
2798 | special_sections_z /* 'z' */ | |
7f4d3958 L |
2799 | }; |
2800 | ||
551b43fd AM |
2801 | const struct bfd_elf_special_section * |
2802 | _bfd_elf_get_special_section (const char *name, | |
2803 | const struct bfd_elf_special_section *spec, | |
2804 | unsigned int rela) | |
2f89ff8d L |
2805 | { |
2806 | int i; | |
7f4d3958 | 2807 | int len; |
7f4d3958 | 2808 | |
551b43fd | 2809 | len = strlen (name); |
7f4d3958 | 2810 | |
551b43fd | 2811 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2812 | { |
2813 | int suffix_len; | |
551b43fd | 2814 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2815 | |
2816 | if (len < prefix_len) | |
2817 | continue; | |
551b43fd | 2818 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2819 | continue; |
2820 | ||
551b43fd | 2821 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2822 | if (suffix_len <= 0) |
2823 | { | |
2824 | if (name[prefix_len] != 0) | |
2825 | { | |
2826 | if (suffix_len == 0) | |
2827 | continue; | |
2828 | if (name[prefix_len] != '.' | |
2829 | && (suffix_len == -2 | |
551b43fd | 2830 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2831 | continue; |
2832 | } | |
2833 | } | |
2834 | else | |
2835 | { | |
2836 | if (len < prefix_len + suffix_len) | |
2837 | continue; | |
2838 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2839 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2840 | suffix_len) != 0) |
2841 | continue; | |
2842 | } | |
551b43fd | 2843 | return &spec[i]; |
7dcb9820 | 2844 | } |
2f89ff8d L |
2845 | |
2846 | return NULL; | |
2847 | } | |
2848 | ||
7dcb9820 | 2849 | const struct bfd_elf_special_section * |
29ef7005 | 2850 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2851 | { |
551b43fd AM |
2852 | int i; |
2853 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2854 | const struct elf_backend_data *bed; |
2f89ff8d L |
2855 | |
2856 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2857 | if (sec->name == NULL) |
2858 | return NULL; | |
2f89ff8d | 2859 | |
29ef7005 L |
2860 | bed = get_elf_backend_data (abfd); |
2861 | spec = bed->special_sections; | |
2862 | if (spec) | |
2863 | { | |
2864 | spec = _bfd_elf_get_special_section (sec->name, | |
2865 | bed->special_sections, | |
2866 | sec->use_rela_p); | |
2867 | if (spec != NULL) | |
2868 | return spec; | |
2869 | } | |
2870 | ||
551b43fd AM |
2871 | if (sec->name[0] != '.') |
2872 | return NULL; | |
2f89ff8d | 2873 | |
551b43fd | 2874 | i = sec->name[1] - 'b'; |
1b315056 | 2875 | if (i < 0 || i > 'z' - 'b') |
551b43fd AM |
2876 | return NULL; |
2877 | ||
2878 | spec = special_sections[i]; | |
2f89ff8d | 2879 | |
551b43fd AM |
2880 | if (spec == NULL) |
2881 | return NULL; | |
2882 | ||
2883 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2884 | } |
2885 | ||
0a1b45a2 | 2886 | bool |
217aa764 | 2887 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2888 | { |
2889 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2890 | const struct elf_backend_data *bed; |
7dcb9820 | 2891 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2892 | |
f0abc2a1 AM |
2893 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2894 | if (sdata == NULL) | |
2895 | { | |
a50b1753 | 2896 | sdata = (struct bfd_elf_section_data *) bfd_zalloc (abfd, |
07d6d2b8 | 2897 | sizeof (*sdata)); |
f0abc2a1 | 2898 | if (sdata == NULL) |
0a1b45a2 | 2899 | return false; |
217aa764 | 2900 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2901 | } |
bf572ba0 | 2902 | |
551b43fd AM |
2903 | /* Indicate whether or not this section should use RELA relocations. */ |
2904 | bed = get_elf_backend_data (abfd); | |
2905 | sec->use_rela_p = bed->default_use_rela_p; | |
2906 | ||
8c803a2d AM |
2907 | /* Set up ELF section type and flags for newly created sections, if |
2908 | there is an ABI mandated section. */ | |
2909 | ssect = (*bed->get_sec_type_attr) (abfd, sec); | |
2910 | if (ssect != NULL) | |
2f89ff8d | 2911 | { |
8c803a2d AM |
2912 | elf_section_type (sec) = ssect->type; |
2913 | elf_section_flags (sec) = ssect->attr; | |
2f89ff8d L |
2914 | } |
2915 | ||
f592407e | 2916 | return _bfd_generic_new_section_hook (abfd, sec); |
252b5132 RH |
2917 | } |
2918 | ||
2919 | /* Create a new bfd section from an ELF program header. | |
2920 | ||
2921 | Since program segments have no names, we generate a synthetic name | |
2922 | of the form segment<NUM>, where NUM is generally the index in the | |
2923 | program header table. For segments that are split (see below) we | |
2924 | generate the names segment<NUM>a and segment<NUM>b. | |
2925 | ||
2926 | Note that some program segments may have a file size that is different than | |
2927 | (less than) the memory size. All this means is that at execution the | |
2928 | system must allocate the amount of memory specified by the memory size, | |
2929 | but only initialize it with the first "file size" bytes read from the | |
2930 | file. This would occur for example, with program segments consisting | |
2931 | of combined data+bss. | |
2932 | ||
2933 | To handle the above situation, this routine generates TWO bfd sections | |
2934 | for the single program segment. The first has the length specified by | |
2935 | the file size of the segment, and the second has the length specified | |
2936 | by the difference between the two sizes. In effect, the segment is split | |
d5191d0c | 2937 | into its initialized and uninitialized parts. |
252b5132 RH |
2938 | |
2939 | */ | |
2940 | ||
0a1b45a2 | 2941 | bool |
217aa764 AM |
2942 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2943 | Elf_Internal_Phdr *hdr, | |
91d6fa6a | 2944 | int hdr_index, |
a50b1753 | 2945 | const char *type_name) |
252b5132 RH |
2946 | { |
2947 | asection *newsect; | |
2948 | char *name; | |
2949 | char namebuf[64]; | |
d4c88bbb | 2950 | size_t len; |
252b5132 | 2951 | int split; |
502794d4 | 2952 | unsigned int opb = bfd_octets_per_byte (abfd, NULL); |
252b5132 RH |
2953 | |
2954 | split = ((hdr->p_memsz > 0) | |
2955 | && (hdr->p_filesz > 0) | |
2956 | && (hdr->p_memsz > hdr->p_filesz)); | |
d5191d0c AM |
2957 | |
2958 | if (hdr->p_filesz > 0) | |
252b5132 | 2959 | { |
91d6fa6a | 2960 | sprintf (namebuf, "%s%d%s", type_name, hdr_index, split ? "a" : ""); |
d5191d0c | 2961 | len = strlen (namebuf) + 1; |
a50b1753 | 2962 | name = (char *) bfd_alloc (abfd, len); |
d5191d0c | 2963 | if (!name) |
0a1b45a2 | 2964 | return false; |
d5191d0c AM |
2965 | memcpy (name, namebuf, len); |
2966 | newsect = bfd_make_section (abfd, name); | |
2967 | if (newsect == NULL) | |
0a1b45a2 | 2968 | return false; |
502794d4 CE |
2969 | newsect->vma = hdr->p_vaddr / opb; |
2970 | newsect->lma = hdr->p_paddr / opb; | |
d5191d0c AM |
2971 | newsect->size = hdr->p_filesz; |
2972 | newsect->filepos = hdr->p_offset; | |
2973 | newsect->flags |= SEC_HAS_CONTENTS; | |
2974 | newsect->alignment_power = bfd_log2 (hdr->p_align); | |
2975 | if (hdr->p_type == PT_LOAD) | |
252b5132 | 2976 | { |
d5191d0c AM |
2977 | newsect->flags |= SEC_ALLOC; |
2978 | newsect->flags |= SEC_LOAD; | |
2979 | if (hdr->p_flags & PF_X) | |
2980 | { | |
2981 | /* FIXME: all we known is that it has execute PERMISSION, | |
2982 | may be data. */ | |
2983 | newsect->flags |= SEC_CODE; | |
2984 | } | |
2985 | } | |
2986 | if (!(hdr->p_flags & PF_W)) | |
2987 | { | |
2988 | newsect->flags |= SEC_READONLY; | |
252b5132 | 2989 | } |
252b5132 RH |
2990 | } |
2991 | ||
d5191d0c | 2992 | if (hdr->p_memsz > hdr->p_filesz) |
252b5132 | 2993 | { |
d5191d0c AM |
2994 | bfd_vma align; |
2995 | ||
91d6fa6a | 2996 | sprintf (namebuf, "%s%d%s", type_name, hdr_index, split ? "b" : ""); |
d4c88bbb | 2997 | len = strlen (namebuf) + 1; |
a50b1753 | 2998 | name = (char *) bfd_alloc (abfd, len); |
252b5132 | 2999 | if (!name) |
0a1b45a2 | 3000 | return false; |
d4c88bbb | 3001 | memcpy (name, namebuf, len); |
252b5132 RH |
3002 | newsect = bfd_make_section (abfd, name); |
3003 | if (newsect == NULL) | |
0a1b45a2 | 3004 | return false; |
502794d4 CE |
3005 | newsect->vma = (hdr->p_vaddr + hdr->p_filesz) / opb; |
3006 | newsect->lma = (hdr->p_paddr + hdr->p_filesz) / opb; | |
eea6121a | 3007 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
d5191d0c AM |
3008 | newsect->filepos = hdr->p_offset + hdr->p_filesz; |
3009 | align = newsect->vma & -newsect->vma; | |
3010 | if (align == 0 || align > hdr->p_align) | |
3011 | align = hdr->p_align; | |
3012 | newsect->alignment_power = bfd_log2 (align); | |
252b5132 RH |
3013 | if (hdr->p_type == PT_LOAD) |
3014 | { | |
3015 | newsect->flags |= SEC_ALLOC; | |
3016 | if (hdr->p_flags & PF_X) | |
3017 | newsect->flags |= SEC_CODE; | |
3018 | } | |
3019 | if (!(hdr->p_flags & PF_W)) | |
3020 | newsect->flags |= SEC_READONLY; | |
3021 | } | |
3022 | ||
0a1b45a2 | 3023 | return true; |
252b5132 RH |
3024 | } |
3025 | ||
0a1b45a2 | 3026 | static bool |
864619bb KS |
3027 | _bfd_elf_core_find_build_id (bfd *templ, bfd_vma offset) |
3028 | { | |
3029 | /* The return value is ignored. Build-ids are considered optional. */ | |
3030 | if (templ->xvec->flavour == bfd_target_elf_flavour) | |
3031 | return (*get_elf_backend_data (templ)->elf_backend_core_find_build_id) | |
3032 | (templ, offset); | |
0a1b45a2 | 3033 | return false; |
864619bb KS |
3034 | } |
3035 | ||
0a1b45a2 | 3036 | bool |
91d6fa6a | 3037 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int hdr_index) |
20cfcaae | 3038 | { |
9c5bfbb7 | 3039 | const struct elf_backend_data *bed; |
20cfcaae NC |
3040 | |
3041 | switch (hdr->p_type) | |
3042 | { | |
3043 | case PT_NULL: | |
91d6fa6a | 3044 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "null"); |
20cfcaae NC |
3045 | |
3046 | case PT_LOAD: | |
864619bb | 3047 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "load")) |
0a1b45a2 | 3048 | return false; |
864619bb KS |
3049 | if (bfd_get_format (abfd) == bfd_core && abfd->build_id == NULL) |
3050 | _bfd_elf_core_find_build_id (abfd, hdr->p_offset); | |
0a1b45a2 | 3051 | return true; |
20cfcaae NC |
3052 | |
3053 | case PT_DYNAMIC: | |
91d6fa6a | 3054 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "dynamic"); |
20cfcaae NC |
3055 | |
3056 | case PT_INTERP: | |
91d6fa6a | 3057 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "interp"); |
20cfcaae NC |
3058 | |
3059 | case PT_NOTE: | |
91d6fa6a | 3060 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "note")) |
0a1b45a2 | 3061 | return false; |
276da9b3 L |
3062 | if (! elf_read_notes (abfd, hdr->p_offset, hdr->p_filesz, |
3063 | hdr->p_align)) | |
0a1b45a2 AM |
3064 | return false; |
3065 | return true; | |
20cfcaae NC |
3066 | |
3067 | case PT_SHLIB: | |
91d6fa6a | 3068 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "shlib"); |
20cfcaae NC |
3069 | |
3070 | case PT_PHDR: | |
91d6fa6a | 3071 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "phdr"); |
20cfcaae | 3072 | |
811072d8 | 3073 | case PT_GNU_EH_FRAME: |
91d6fa6a | 3074 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, |
811072d8 RM |
3075 | "eh_frame_hdr"); |
3076 | ||
2b05f1b7 | 3077 | case PT_GNU_STACK: |
91d6fa6a | 3078 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "stack"); |
9ee5e499 | 3079 | |
8c37241b | 3080 | case PT_GNU_RELRO: |
91d6fa6a | 3081 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "relro"); |
8c37241b | 3082 | |
20cfcaae | 3083 | default: |
8c1acd09 | 3084 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 3085 | bed = get_elf_backend_data (abfd); |
91d6fa6a | 3086 | return bed->elf_backend_section_from_phdr (abfd, hdr, hdr_index, "proc"); |
20cfcaae NC |
3087 | } |
3088 | } | |
3089 | ||
d4730f92 BS |
3090 | /* Return the REL_HDR for SEC, assuming there is only a single one, either |
3091 | REL or RELA. */ | |
3092 | ||
3093 | Elf_Internal_Shdr * | |
3094 | _bfd_elf_single_rel_hdr (asection *sec) | |
3095 | { | |
3096 | if (elf_section_data (sec)->rel.hdr) | |
3097 | { | |
3098 | BFD_ASSERT (elf_section_data (sec)->rela.hdr == NULL); | |
3099 | return elf_section_data (sec)->rel.hdr; | |
3100 | } | |
3101 | else | |
3102 | return elf_section_data (sec)->rela.hdr; | |
3103 | } | |
3104 | ||
0a1b45a2 | 3105 | static bool |
3e19fb8f L |
3106 | _bfd_elf_set_reloc_sh_name (bfd *abfd, |
3107 | Elf_Internal_Shdr *rel_hdr, | |
3108 | const char *sec_name, | |
0a1b45a2 | 3109 | bool use_rela_p) |
3e19fb8f L |
3110 | { |
3111 | char *name = (char *) bfd_alloc (abfd, | |
3112 | sizeof ".rela" + strlen (sec_name)); | |
3113 | if (name == NULL) | |
0a1b45a2 | 3114 | return false; |
3e19fb8f L |
3115 | |
3116 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", sec_name); | |
3117 | rel_hdr->sh_name = | |
3118 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, | |
0a1b45a2 | 3119 | false); |
3e19fb8f | 3120 | if (rel_hdr->sh_name == (unsigned int) -1) |
0a1b45a2 | 3121 | return false; |
3e19fb8f | 3122 | |
0a1b45a2 | 3123 | return true; |
3e19fb8f L |
3124 | } |
3125 | ||
d4730f92 BS |
3126 | /* Allocate and initialize a section-header for a new reloc section, |
3127 | containing relocations against ASECT. It is stored in RELDATA. If | |
3128 | USE_RELA_P is TRUE, we use RELA relocations; otherwise, we use REL | |
3129 | relocations. */ | |
23bc299b | 3130 | |
0a1b45a2 | 3131 | static bool |
217aa764 | 3132 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
d4730f92 | 3133 | struct bfd_elf_section_reloc_data *reldata, |
f6fe1ccd | 3134 | const char *sec_name, |
0a1b45a2 AM |
3135 | bool use_rela_p, |
3136 | bool delay_st_name_p) | |
23bc299b | 3137 | { |
d4730f92 | 3138 | Elf_Internal_Shdr *rel_hdr; |
9c5bfbb7 | 3139 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
d4730f92 | 3140 | |
d4730f92 | 3141 | BFD_ASSERT (reldata->hdr == NULL); |
ef53be89 | 3142 | rel_hdr = bfd_zalloc (abfd, sizeof (*rel_hdr)); |
d4730f92 | 3143 | reldata->hdr = rel_hdr; |
23bc299b | 3144 | |
3e19fb8f L |
3145 | if (delay_st_name_p) |
3146 | rel_hdr->sh_name = (unsigned int) -1; | |
3147 | else if (!_bfd_elf_set_reloc_sh_name (abfd, rel_hdr, sec_name, | |
3148 | use_rela_p)) | |
0a1b45a2 | 3149 | return false; |
23bc299b MM |
3150 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
3151 | rel_hdr->sh_entsize = (use_rela_p | |
3152 | ? bed->s->sizeof_rela | |
3153 | : bed->s->sizeof_rel); | |
72de5009 | 3154 | rel_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align; |
28e07a05 | 3155 | rel_hdr->sh_flags = 0; |
23bc299b MM |
3156 | rel_hdr->sh_addr = 0; |
3157 | rel_hdr->sh_size = 0; | |
3158 | rel_hdr->sh_offset = 0; | |
3159 | ||
0a1b45a2 | 3160 | return true; |
23bc299b MM |
3161 | } |
3162 | ||
94be91de JB |
3163 | /* Return the default section type based on the passed in section flags. */ |
3164 | ||
3165 | int | |
3166 | bfd_elf_get_default_section_type (flagword flags) | |
3167 | { | |
0e41bebb | 3168 | if ((flags & (SEC_ALLOC | SEC_IS_COMMON)) != 0 |
2e76e85a | 3169 | && (flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
94be91de JB |
3170 | return SHT_NOBITS; |
3171 | return SHT_PROGBITS; | |
3172 | } | |
3173 | ||
d4730f92 BS |
3174 | struct fake_section_arg |
3175 | { | |
3176 | struct bfd_link_info *link_info; | |
0a1b45a2 | 3177 | bool failed; |
d4730f92 BS |
3178 | }; |
3179 | ||
252b5132 RH |
3180 | /* Set up an ELF internal section header for a section. */ |
3181 | ||
252b5132 | 3182 | static void |
d4730f92 | 3183 | elf_fake_sections (bfd *abfd, asection *asect, void *fsarg) |
252b5132 | 3184 | { |
d4730f92 | 3185 | struct fake_section_arg *arg = (struct fake_section_arg *)fsarg; |
9c5bfbb7 | 3186 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
d4730f92 | 3187 | struct bfd_elf_section_data *esd = elf_section_data (asect); |
252b5132 | 3188 | Elf_Internal_Shdr *this_hdr; |
0414f35b | 3189 | unsigned int sh_type; |
0ce398f1 | 3190 | const char *name = asect->name; |
0a1b45a2 | 3191 | bool delay_st_name_p = false; |
233bf4f8 | 3192 | bfd_vma mask; |
252b5132 | 3193 | |
d4730f92 | 3194 | if (arg->failed) |
252b5132 RH |
3195 | { |
3196 | /* We already failed; just get out of the bfd_map_over_sections | |
08a40648 | 3197 | loop. */ |
252b5132 RH |
3198 | return; |
3199 | } | |
3200 | ||
d4730f92 | 3201 | this_hdr = &esd->this_hdr; |
252b5132 | 3202 | |
f6fe1ccd | 3203 | if (arg->link_info) |
0ce398f1 | 3204 | { |
f6fe1ccd L |
3205 | /* ld: compress DWARF debug sections with names: .debug_*. */ |
3206 | if ((arg->link_info->compress_debug & COMPRESS_DEBUG) | |
3207 | && (asect->flags & SEC_DEBUGGING) | |
3208 | && name[1] == 'd' | |
3209 | && name[6] == '_') | |
3210 | { | |
3211 | /* Set SEC_ELF_COMPRESS to indicate this section should be | |
3212 | compressed. */ | |
3213 | asect->flags |= SEC_ELF_COMPRESS; | |
dd905818 | 3214 | /* If this section will be compressed, delay adding section |
3e19fb8f L |
3215 | name to section name section after it is compressed in |
3216 | _bfd_elf_assign_file_positions_for_non_load. */ | |
0a1b45a2 | 3217 | delay_st_name_p = true; |
f6fe1ccd L |
3218 | } |
3219 | } | |
3220 | else if ((asect->flags & SEC_ELF_RENAME)) | |
3221 | { | |
3222 | /* objcopy: rename output DWARF debug section. */ | |
3223 | if ((abfd->flags & (BFD_DECOMPRESS | BFD_COMPRESS_GABI))) | |
3224 | { | |
3225 | /* When we decompress or compress with SHF_COMPRESSED, | |
3226 | convert section name from .zdebug_* to .debug_* if | |
3227 | needed. */ | |
3228 | if (name[1] == 'z') | |
3229 | { | |
3230 | char *new_name = convert_zdebug_to_debug (abfd, name); | |
3231 | if (new_name == NULL) | |
3232 | { | |
0a1b45a2 | 3233 | arg->failed = true; |
f6fe1ccd L |
3234 | return; |
3235 | } | |
3236 | name = new_name; | |
3237 | } | |
3238 | } | |
3239 | else if (asect->compress_status == COMPRESS_SECTION_DONE) | |
0ce398f1 | 3240 | { |
f6fe1ccd L |
3241 | /* PR binutils/18087: Compression does not always make a |
3242 | section smaller. So only rename the section when | |
3243 | compression has actually taken place. If input section | |
3244 | name is .zdebug_*, we should never compress it again. */ | |
3245 | char *new_name = convert_debug_to_zdebug (abfd, name); | |
0ce398f1 L |
3246 | if (new_name == NULL) |
3247 | { | |
0a1b45a2 | 3248 | arg->failed = true; |
0ce398f1 L |
3249 | return; |
3250 | } | |
f6fe1ccd L |
3251 | BFD_ASSERT (name[1] != 'z'); |
3252 | name = new_name; | |
0ce398f1 L |
3253 | } |
3254 | } | |
3255 | ||
3e19fb8f L |
3256 | if (delay_st_name_p) |
3257 | this_hdr->sh_name = (unsigned int) -1; | |
3258 | else | |
252b5132 | 3259 | { |
3e19fb8f L |
3260 | this_hdr->sh_name |
3261 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
0a1b45a2 | 3262 | name, false); |
3e19fb8f L |
3263 | if (this_hdr->sh_name == (unsigned int) -1) |
3264 | { | |
0a1b45a2 | 3265 | arg->failed = true; |
3e19fb8f L |
3266 | return; |
3267 | } | |
252b5132 RH |
3268 | } |
3269 | ||
a4d8e49b | 3270 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
3271 | |
3272 | if ((asect->flags & SEC_ALLOC) != 0 | |
3273 | || asect->user_set_vma) | |
502794d4 | 3274 | this_hdr->sh_addr = asect->vma * bfd_octets_per_byte (abfd, asect); |
252b5132 RH |
3275 | else |
3276 | this_hdr->sh_addr = 0; | |
3277 | ||
3278 | this_hdr->sh_offset = 0; | |
eea6121a | 3279 | this_hdr->sh_size = asect->size; |
252b5132 | 3280 | this_hdr->sh_link = 0; |
c86934ce NC |
3281 | /* PR 17512: file: 0eb809fe, 8b0535ee. */ |
3282 | if (asect->alignment_power >= (sizeof (bfd_vma) * 8) - 1) | |
3283 | { | |
4eca0228 | 3284 | _bfd_error_handler |
695344c0 | 3285 | /* xgettext:c-format */ |
9793eb77 | 3286 | (_("%pB: error: alignment power %d of section `%pA' is too big"), |
c08bb8dd | 3287 | abfd, asect->alignment_power, asect); |
0a1b45a2 | 3288 | arg->failed = true; |
c86934ce NC |
3289 | return; |
3290 | } | |
233bf4f8 AM |
3291 | /* Set sh_addralign to the highest power of two given by alignment |
3292 | consistent with the section VMA. Linker scripts can force VMA. */ | |
3293 | mask = ((bfd_vma) 1 << asect->alignment_power) | this_hdr->sh_addr; | |
3294 | this_hdr->sh_addralign = mask & -mask; | |
252b5132 RH |
3295 | /* The sh_entsize and sh_info fields may have been set already by |
3296 | copy_private_section_data. */ | |
3297 | ||
3298 | this_hdr->bfd_section = asect; | |
3299 | this_hdr->contents = NULL; | |
3300 | ||
3cddba1e L |
3301 | /* If the section type is unspecified, we set it based on |
3302 | asect->flags. */ | |
98ece1b3 AM |
3303 | if ((asect->flags & SEC_GROUP) != 0) |
3304 | sh_type = SHT_GROUP; | |
98ece1b3 | 3305 | else |
94be91de | 3306 | sh_type = bfd_elf_get_default_section_type (asect->flags); |
98ece1b3 | 3307 | |
3cddba1e | 3308 | if (this_hdr->sh_type == SHT_NULL) |
98ece1b3 AM |
3309 | this_hdr->sh_type = sh_type; |
3310 | else if (this_hdr->sh_type == SHT_NOBITS | |
3311 | && sh_type == SHT_PROGBITS | |
3312 | && (asect->flags & SEC_ALLOC) != 0) | |
3cddba1e | 3313 | { |
98ece1b3 AM |
3314 | /* Warn if we are changing a NOBITS section to PROGBITS, but |
3315 | allow the link to proceed. This can happen when users link | |
3316 | non-bss input sections to bss output sections, or emit data | |
3317 | to a bss output section via a linker script. */ | |
4eca0228 | 3318 | _bfd_error_handler |
871b3ab2 | 3319 | (_("warning: section `%pA' type changed to PROGBITS"), asect); |
98ece1b3 | 3320 | this_hdr->sh_type = sh_type; |
3cddba1e L |
3321 | } |
3322 | ||
2f89ff8d | 3323 | switch (this_hdr->sh_type) |
252b5132 | 3324 | { |
2f89ff8d | 3325 | default: |
2f89ff8d L |
3326 | break; |
3327 | ||
3328 | case SHT_STRTAB: | |
2f89ff8d L |
3329 | case SHT_NOTE: |
3330 | case SHT_NOBITS: | |
3331 | case SHT_PROGBITS: | |
3332 | break; | |
606851fb AM |
3333 | |
3334 | case SHT_INIT_ARRAY: | |
3335 | case SHT_FINI_ARRAY: | |
3336 | case SHT_PREINIT_ARRAY: | |
3337 | this_hdr->sh_entsize = bed->s->arch_size / 8; | |
3338 | break; | |
2f89ff8d L |
3339 | |
3340 | case SHT_HASH: | |
c7ac6ff8 | 3341 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 3342 | break; |
5de3bf90 | 3343 | |
2f89ff8d | 3344 | case SHT_DYNSYM: |
252b5132 | 3345 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
3346 | break; |
3347 | ||
3348 | case SHT_DYNAMIC: | |
252b5132 | 3349 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
3350 | break; |
3351 | ||
3352 | case SHT_RELA: | |
3353 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
3354 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
3355 | break; | |
3356 | ||
3357 | case SHT_REL: | |
3358 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
3359 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
3360 | break; | |
3361 | ||
3362 | case SHT_GNU_versym: | |
252b5132 | 3363 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
3364 | break; |
3365 | ||
3366 | case SHT_GNU_verdef: | |
252b5132 RH |
3367 | this_hdr->sh_entsize = 0; |
3368 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
3369 | cverdefs. The linker will set cverdefs, but sh_info will be |
3370 | zero. */ | |
252b5132 RH |
3371 | if (this_hdr->sh_info == 0) |
3372 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
3373 | else | |
3374 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
3375 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
3376 | break; |
3377 | ||
3378 | case SHT_GNU_verneed: | |
252b5132 RH |
3379 | this_hdr->sh_entsize = 0; |
3380 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
3381 | cverrefs. The linker will set cverrefs, but sh_info will be |
3382 | zero. */ | |
252b5132 RH |
3383 | if (this_hdr->sh_info == 0) |
3384 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
3385 | else | |
3386 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
3387 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
3388 | break; |
3389 | ||
3390 | case SHT_GROUP: | |
1783205a | 3391 | this_hdr->sh_entsize = GRP_ENTRY_SIZE; |
2f89ff8d | 3392 | break; |
fdc90cb4 JJ |
3393 | |
3394 | case SHT_GNU_HASH: | |
3395 | this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4; | |
3396 | break; | |
dbb410c3 | 3397 | } |
252b5132 RH |
3398 | |
3399 | if ((asect->flags & SEC_ALLOC) != 0) | |
3400 | this_hdr->sh_flags |= SHF_ALLOC; | |
3401 | if ((asect->flags & SEC_READONLY) == 0) | |
3402 | this_hdr->sh_flags |= SHF_WRITE; | |
3403 | if ((asect->flags & SEC_CODE) != 0) | |
3404 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
3405 | if ((asect->flags & SEC_MERGE) != 0) |
3406 | { | |
3407 | this_hdr->sh_flags |= SHF_MERGE; | |
3408 | this_hdr->sh_entsize = asect->entsize; | |
f5fa8ca2 | 3409 | } |
84865015 NC |
3410 | if ((asect->flags & SEC_STRINGS) != 0) |
3411 | this_hdr->sh_flags |= SHF_STRINGS; | |
1126897b | 3412 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 3413 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 3414 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
3415 | { |
3416 | this_hdr->sh_flags |= SHF_TLS; | |
3a800eb9 AM |
3417 | if (asect->size == 0 |
3418 | && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
704afa60 | 3419 | { |
3a800eb9 | 3420 | struct bfd_link_order *o = asect->map_tail.link_order; |
b34976b6 | 3421 | |
704afa60 | 3422 | this_hdr->sh_size = 0; |
3a800eb9 AM |
3423 | if (o != NULL) |
3424 | { | |
704afa60 | 3425 | this_hdr->sh_size = o->offset + o->size; |
3a800eb9 AM |
3426 | if (this_hdr->sh_size != 0) |
3427 | this_hdr->sh_type = SHT_NOBITS; | |
3428 | } | |
704afa60 JJ |
3429 | } |
3430 | } | |
18ae9cc1 L |
3431 | if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE) |
3432 | this_hdr->sh_flags |= SHF_EXCLUDE; | |
252b5132 | 3433 | |
d4730f92 BS |
3434 | /* If the section has relocs, set up a section header for the |
3435 | SHT_REL[A] section. If two relocation sections are required for | |
3436 | this section, it is up to the processor-specific back-end to | |
3437 | create the other. */ | |
3438 | if ((asect->flags & SEC_RELOC) != 0) | |
3439 | { | |
3440 | /* When doing a relocatable link, create both REL and RELA sections if | |
3441 | needed. */ | |
3442 | if (arg->link_info | |
3443 | /* Do the normal setup if we wouldn't create any sections here. */ | |
3444 | && esd->rel.count + esd->rela.count > 0 | |
0e1862bb L |
3445 | && (bfd_link_relocatable (arg->link_info) |
3446 | || arg->link_info->emitrelocations)) | |
d4730f92 BS |
3447 | { |
3448 | if (esd->rel.count && esd->rel.hdr == NULL | |
28e07a05 | 3449 | && !_bfd_elf_init_reloc_shdr (abfd, &esd->rel, name, |
0a1b45a2 | 3450 | false, delay_st_name_p)) |
d4730f92 | 3451 | { |
0a1b45a2 | 3452 | arg->failed = true; |
d4730f92 BS |
3453 | return; |
3454 | } | |
3455 | if (esd->rela.count && esd->rela.hdr == NULL | |
28e07a05 | 3456 | && !_bfd_elf_init_reloc_shdr (abfd, &esd->rela, name, |
0a1b45a2 | 3457 | true, delay_st_name_p)) |
d4730f92 | 3458 | { |
0a1b45a2 | 3459 | arg->failed = true; |
d4730f92 BS |
3460 | return; |
3461 | } | |
3462 | } | |
3463 | else if (!_bfd_elf_init_reloc_shdr (abfd, | |
3464 | (asect->use_rela_p | |
3465 | ? &esd->rela : &esd->rel), | |
f6fe1ccd | 3466 | name, |
3e19fb8f L |
3467 | asect->use_rela_p, |
3468 | delay_st_name_p)) | |
db4677b8 | 3469 | { |
0a1b45a2 | 3470 | arg->failed = true; |
db4677b8 AM |
3471 | return; |
3472 | } | |
d4730f92 BS |
3473 | } |
3474 | ||
252b5132 | 3475 | /* Check for processor-specific section types. */ |
0414f35b | 3476 | sh_type = this_hdr->sh_type; |
e1fddb6b AO |
3477 | if (bed->elf_backend_fake_sections |
3478 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
db4677b8 | 3479 | { |
0a1b45a2 | 3480 | arg->failed = true; |
db4677b8 AM |
3481 | return; |
3482 | } | |
252b5132 | 3483 | |
42bb2e33 | 3484 | if (sh_type == SHT_NOBITS && asect->size != 0) |
0414f35b AM |
3485 | { |
3486 | /* Don't change the header type from NOBITS if we are being | |
42bb2e33 | 3487 | called for objcopy --only-keep-debug. */ |
0414f35b AM |
3488 | this_hdr->sh_type = sh_type; |
3489 | } | |
252b5132 RH |
3490 | } |
3491 | ||
bcacc0f5 AM |
3492 | /* Fill in the contents of a SHT_GROUP section. Called from |
3493 | _bfd_elf_compute_section_file_positions for gas, objcopy, and | |
3494 | when ELF targets use the generic linker, ld. Called for ld -r | |
3495 | from bfd_elf_final_link. */ | |
dbb410c3 | 3496 | |
1126897b | 3497 | void |
217aa764 | 3498 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 3499 | { |
0a1b45a2 | 3500 | bool *failedptr = (bool *) failedptrarg; |
9dce4196 | 3501 | asection *elt, *first; |
dbb410c3 | 3502 | unsigned char *loc; |
0a1b45a2 | 3503 | bool gas; |
dbb410c3 | 3504 | |
7e4111ad L |
3505 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
3506 | elfxx-ia64.c. */ | |
ce5aecf8 AM |
3507 | if ((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP |
3508 | || sec->size == 0 | |
dbb410c3 AM |
3509 | || *failedptr) |
3510 | return; | |
3511 | ||
bcacc0f5 AM |
3512 | if (elf_section_data (sec)->this_hdr.sh_info == 0) |
3513 | { | |
3514 | unsigned long symindx = 0; | |
3515 | ||
3516 | /* elf_group_id will have been set up by objcopy and the | |
3517 | generic linker. */ | |
3518 | if (elf_group_id (sec) != NULL) | |
3519 | symindx = elf_group_id (sec)->udata.i; | |
1126897b | 3520 | |
bcacc0f5 AM |
3521 | if (symindx == 0) |
3522 | { | |
3523 | /* If called from the assembler, swap_out_syms will have set up | |
6a541707 NC |
3524 | elf_section_syms. |
3525 | PR 25699: A corrupt input file could contain bogus group info. */ | |
3526 | if (elf_section_syms (abfd) == NULL) | |
3527 | { | |
0a1b45a2 | 3528 | *failedptr = true; |
6a541707 NC |
3529 | return; |
3530 | } | |
bcacc0f5 AM |
3531 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; |
3532 | } | |
3533 | elf_section_data (sec)->this_hdr.sh_info = symindx; | |
3534 | } | |
3535 | else if (elf_section_data (sec)->this_hdr.sh_info == (unsigned int) -2) | |
1126897b | 3536 | { |
bcacc0f5 AM |
3537 | /* The ELF backend linker sets sh_info to -2 when the group |
3538 | signature symbol is global, and thus the index can't be | |
3539 | set until all local symbols are output. */ | |
53720c49 AM |
3540 | asection *igroup; |
3541 | struct bfd_elf_section_data *sec_data; | |
3542 | unsigned long symndx; | |
3543 | unsigned long extsymoff; | |
bcacc0f5 AM |
3544 | struct elf_link_hash_entry *h; |
3545 | ||
53720c49 AM |
3546 | /* The point of this little dance to the first SHF_GROUP section |
3547 | then back to the SHT_GROUP section is that this gets us to | |
3548 | the SHT_GROUP in the input object. */ | |
3549 | igroup = elf_sec_group (elf_next_in_group (sec)); | |
3550 | sec_data = elf_section_data (igroup); | |
3551 | symndx = sec_data->this_hdr.sh_info; | |
3552 | extsymoff = 0; | |
bcacc0f5 AM |
3553 | if (!elf_bad_symtab (igroup->owner)) |
3554 | { | |
3555 | Elf_Internal_Shdr *symtab_hdr; | |
3556 | ||
3557 | symtab_hdr = &elf_tdata (igroup->owner)->symtab_hdr; | |
3558 | extsymoff = symtab_hdr->sh_info; | |
3559 | } | |
3560 | h = elf_sym_hashes (igroup->owner)[symndx - extsymoff]; | |
3561 | while (h->root.type == bfd_link_hash_indirect | |
3562 | || h->root.type == bfd_link_hash_warning) | |
3563 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3564 | ||
3565 | elf_section_data (sec)->this_hdr.sh_info = h->indx; | |
1126897b | 3566 | } |
dbb410c3 | 3567 | |
1126897b | 3568 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
0a1b45a2 | 3569 | gas = true; |
dbb410c3 AM |
3570 | if (sec->contents == NULL) |
3571 | { | |
0a1b45a2 | 3572 | gas = false; |
a50b1753 | 3573 | sec->contents = (unsigned char *) bfd_alloc (abfd, sec->size); |
9dce4196 AM |
3574 | |
3575 | /* Arrange for the section to be written out. */ | |
3576 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
3577 | if (sec->contents == NULL) |
3578 | { | |
0a1b45a2 | 3579 | *failedptr = true; |
dbb410c3 AM |
3580 | return; |
3581 | } | |
3582 | } | |
3583 | ||
eea6121a | 3584 | loc = sec->contents + sec->size; |
dbb410c3 | 3585 | |
9dce4196 AM |
3586 | /* Get the pointer to the first section in the group that gas |
3587 | squirreled away here. objcopy arranges for this to be set to the | |
3588 | start of the input section group. */ | |
3589 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
3590 | |
3591 | /* First element is a flag word. Rest of section is elf section | |
3592 | indices for all the sections of the group. Write them backwards | |
3593 | just to keep the group in the same order as given in .section | |
3594 | directives, not that it matters. */ | |
3595 | while (elt != NULL) | |
3596 | { | |
9dce4196 | 3597 | asection *s; |
9dce4196 | 3598 | |
9dce4196 | 3599 | s = elt; |
415f38a6 AM |
3600 | if (!gas) |
3601 | s = s->output_section; | |
3602 | if (s != NULL | |
3603 | && !bfd_is_abs_section (s)) | |
01e1a5bc | 3604 | { |
db4677b8 | 3605 | struct bfd_elf_section_data *elf_sec = elf_section_data (s); |
28e07a05 AM |
3606 | struct bfd_elf_section_data *input_elf_sec = elf_section_data (elt); |
3607 | ||
3608 | if (elf_sec->rel.hdr != NULL | |
3609 | && (gas | |
3610 | || (input_elf_sec->rel.hdr != NULL | |
3611 | && input_elf_sec->rel.hdr->sh_flags & SHF_GROUP) != 0)) | |
db4677b8 | 3612 | { |
28e07a05 | 3613 | elf_sec->rel.hdr->sh_flags |= SHF_GROUP; |
db4677b8 AM |
3614 | loc -= 4; |
3615 | H_PUT_32 (abfd, elf_sec->rel.idx, loc); | |
3616 | } | |
28e07a05 AM |
3617 | if (elf_sec->rela.hdr != NULL |
3618 | && (gas | |
3619 | || (input_elf_sec->rela.hdr != NULL | |
3620 | && input_elf_sec->rela.hdr->sh_flags & SHF_GROUP) != 0)) | |
db4677b8 | 3621 | { |
28e07a05 | 3622 | elf_sec->rela.hdr->sh_flags |= SHF_GROUP; |
db4677b8 AM |
3623 | loc -= 4; |
3624 | H_PUT_32 (abfd, elf_sec->rela.idx, loc); | |
3625 | } | |
01e1a5bc | 3626 | loc -= 4; |
db4677b8 | 3627 | H_PUT_32 (abfd, elf_sec->this_idx, loc); |
01e1a5bc | 3628 | } |
945906ff | 3629 | elt = elf_next_in_group (elt); |
9dce4196 AM |
3630 | if (elt == first) |
3631 | break; | |
dbb410c3 AM |
3632 | } |
3633 | ||
7bdf4127 AB |
3634 | loc -= 4; |
3635 | BFD_ASSERT (loc == sec->contents); | |
dbb410c3 | 3636 | |
9dce4196 | 3637 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
3638 | } |
3639 | ||
bce964aa AM |
3640 | /* Given NAME, the name of a relocation section stripped of its |
3641 | .rel/.rela prefix, return the section in ABFD to which the | |
3642 | relocations apply. */ | |
bd53a53a L |
3643 | |
3644 | asection * | |
bce964aa AM |
3645 | _bfd_elf_plt_get_reloc_section (bfd *abfd, const char *name) |
3646 | { | |
3647 | /* If a target needs .got.plt section, relocations in rela.plt/rel.plt | |
3648 | section likely apply to .got.plt or .got section. */ | |
3649 | if (get_elf_backend_data (abfd)->want_got_plt | |
3650 | && strcmp (name, ".plt") == 0) | |
3651 | { | |
3652 | asection *sec; | |
3653 | ||
3654 | name = ".got.plt"; | |
3655 | sec = bfd_get_section_by_name (abfd, name); | |
3656 | if (sec != NULL) | |
3657 | return sec; | |
3658 | name = ".got"; | |
3659 | } | |
3660 | ||
3661 | return bfd_get_section_by_name (abfd, name); | |
3662 | } | |
3663 | ||
3664 | /* Return the section to which RELOC_SEC applies. */ | |
3665 | ||
3666 | static asection * | |
3667 | elf_get_reloc_section (asection *reloc_sec) | |
bd53a53a L |
3668 | { |
3669 | const char *name; | |
3670 | unsigned int type; | |
3671 | bfd *abfd; | |
bce964aa | 3672 | const struct elf_backend_data *bed; |
bd53a53a L |
3673 | |
3674 | type = elf_section_data (reloc_sec)->this_hdr.sh_type; | |
3675 | if (type != SHT_REL && type != SHT_RELA) | |
3676 | return NULL; | |
3677 | ||
3678 | /* We look up the section the relocs apply to by name. */ | |
3679 | name = reloc_sec->name; | |
3f3328b8 | 3680 | if (!startswith (name, ".rel")) |
bce964aa AM |
3681 | return NULL; |
3682 | name += 4; | |
3683 | if (type == SHT_RELA && *name++ != 'a') | |
3684 | return NULL; | |
bd53a53a | 3685 | |
bd53a53a | 3686 | abfd = reloc_sec->owner; |
bce964aa AM |
3687 | bed = get_elf_backend_data (abfd); |
3688 | return bed->get_reloc_section (abfd, name); | |
bd53a53a L |
3689 | } |
3690 | ||
252b5132 RH |
3691 | /* Assign all ELF section numbers. The dummy first section is handled here |
3692 | too. The link/info pointers for the standard section types are filled | |
67411cbf AM |
3693 | in here too, while we're at it. LINK_INFO will be 0 when arriving |
3694 | here for objcopy, and when using the generic ELF linker. */ | |
252b5132 | 3695 | |
0a1b45a2 | 3696 | static bool |
da9f89d4 | 3697 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
3698 | { |
3699 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
3700 | asection *sec; | |
3e19fb8f | 3701 | unsigned int section_number; |
252b5132 | 3702 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 3703 | struct bfd_elf_section_data *d; |
0a1b45a2 | 3704 | bool need_symtab; |
446f7ed5 | 3705 | size_t amt; |
252b5132 RH |
3706 | |
3707 | section_number = 1; | |
3708 | ||
2b0f7ef9 JJ |
3709 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
3710 | ||
da9f89d4 | 3711 | /* SHT_GROUP sections are in relocatable files only. */ |
7bdf4127 | 3712 | if (link_info == NULL || !link_info->resolve_section_groups) |
252b5132 | 3713 | { |
ef53be89 | 3714 | size_t reloc_count = 0; |
14f2c699 | 3715 | |
da9f89d4 | 3716 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 3717 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 3718 | { |
5daa8fe7 | 3719 | d = elf_section_data (sec); |
da9f89d4 L |
3720 | |
3721 | if (d->this_hdr.sh_type == SHT_GROUP) | |
08a40648 | 3722 | { |
5daa8fe7 | 3723 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
3724 | { |
3725 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 3726 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 3727 | abfd->section_count--; |
da9f89d4 | 3728 | } |
08a40648 | 3729 | else |
4fbb74a6 | 3730 | d->this_idx = section_number++; |
da9f89d4 | 3731 | } |
14f2c699 L |
3732 | |
3733 | /* Count relocations. */ | |
3734 | reloc_count += sec->reloc_count; | |
47cc2cf5 | 3735 | } |
14f2c699 L |
3736 | |
3737 | /* Clear HAS_RELOC if there are no relocations. */ | |
3738 | if (reloc_count == 0) | |
3739 | abfd->flags &= ~HAS_RELOC; | |
47cc2cf5 PB |
3740 | } |
3741 | ||
3742 | for (sec = abfd->sections; sec; sec = sec->next) | |
3743 | { | |
3744 | d = elf_section_data (sec); | |
3745 | ||
3746 | if (d->this_hdr.sh_type != SHT_GROUP) | |
4fbb74a6 | 3747 | d->this_idx = section_number++; |
3e19fb8f L |
3748 | if (d->this_hdr.sh_name != (unsigned int) -1) |
3749 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); | |
d4730f92 | 3750 | if (d->rel.hdr) |
2b0f7ef9 | 3751 | { |
d4730f92 | 3752 | d->rel.idx = section_number++; |
3e19fb8f L |
3753 | if (d->rel.hdr->sh_name != (unsigned int) -1) |
3754 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel.hdr->sh_name); | |
2b0f7ef9 | 3755 | } |
d4730f92 BS |
3756 | else |
3757 | d->rel.idx = 0; | |
23bc299b | 3758 | |
d4730f92 | 3759 | if (d->rela.hdr) |
2b0f7ef9 | 3760 | { |
d4730f92 | 3761 | d->rela.idx = section_number++; |
3e19fb8f L |
3762 | if (d->rela.hdr->sh_name != (unsigned int) -1) |
3763 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rela.hdr->sh_name); | |
2b0f7ef9 | 3764 | } |
23bc299b | 3765 | else |
d4730f92 | 3766 | d->rela.idx = 0; |
252b5132 RH |
3767 | } |
3768 | ||
3516e984 L |
3769 | need_symtab = (bfd_get_symcount (abfd) > 0 |
3770 | || (link_info == NULL | |
3771 | && ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC)) | |
3772 | == HAS_RELOC))); | |
3773 | if (need_symtab) | |
252b5132 | 3774 | { |
12bd6957 | 3775 | elf_onesymtab (abfd) = section_number++; |
2b0f7ef9 | 3776 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
4fbb74a6 | 3777 | if (section_number > ((SHN_LORESERVE - 2) & 0xFFFF)) |
9ad5cbcf | 3778 | { |
7a6e0d89 | 3779 | elf_section_list *entry; |
6a40cf0c NC |
3780 | |
3781 | BFD_ASSERT (elf_symtab_shndx_list (abfd) == NULL); | |
3782 | ||
7a6e0d89 | 3783 | entry = bfd_zalloc (abfd, sizeof (*entry)); |
6a40cf0c NC |
3784 | entry->ndx = section_number++; |
3785 | elf_symtab_shndx_list (abfd) = entry; | |
3786 | entry->hdr.sh_name | |
9ad5cbcf | 3787 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
0a1b45a2 | 3788 | ".symtab_shndx", false); |
6a40cf0c | 3789 | if (entry->hdr.sh_name == (unsigned int) -1) |
0a1b45a2 | 3790 | return false; |
9ad5cbcf | 3791 | } |
12bd6957 | 3792 | elf_strtab_sec (abfd) = section_number++; |
2b0f7ef9 | 3793 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
3794 | } |
3795 | ||
dd905818 NC |
3796 | elf_shstrtab_sec (abfd) = section_number++; |
3797 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); | |
3798 | elf_elfheader (abfd)->e_shstrndx = elf_shstrtab_sec (abfd); | |
3799 | ||
1c52a645 L |
3800 | if (section_number >= SHN_LORESERVE) |
3801 | { | |
695344c0 | 3802 | /* xgettext:c-format */ |
871b3ab2 | 3803 | _bfd_error_handler (_("%pB: too many sections: %u"), |
1c52a645 | 3804 | abfd, section_number); |
0a1b45a2 | 3805 | return false; |
1c52a645 L |
3806 | } |
3807 | ||
9ad5cbcf | 3808 | elf_numsections (abfd) = section_number; |
252b5132 RH |
3809 | elf_elfheader (abfd)->e_shnum = section_number; |
3810 | ||
3811 | /* Set up the list of section header pointers, in agreement with the | |
3812 | indices. */ | |
446f7ed5 AM |
3813 | amt = section_number * sizeof (Elf_Internal_Shdr *); |
3814 | i_shdrp = (Elf_Internal_Shdr **) bfd_zalloc (abfd, amt); | |
252b5132 | 3815 | if (i_shdrp == NULL) |
0a1b45a2 | 3816 | return false; |
252b5132 | 3817 | |
a50b1753 | 3818 | i_shdrp[0] = (Elf_Internal_Shdr *) bfd_zalloc (abfd, |
07d6d2b8 | 3819 | sizeof (Elf_Internal_Shdr)); |
252b5132 RH |
3820 | if (i_shdrp[0] == NULL) |
3821 | { | |
3822 | bfd_release (abfd, i_shdrp); | |
0a1b45a2 | 3823 | return false; |
252b5132 | 3824 | } |
252b5132 RH |
3825 | |
3826 | elf_elfsections (abfd) = i_shdrp; | |
3827 | ||
12bd6957 | 3828 | i_shdrp[elf_shstrtab_sec (abfd)] = &t->shstrtab_hdr; |
3516e984 | 3829 | if (need_symtab) |
252b5132 | 3830 | { |
12bd6957 | 3831 | i_shdrp[elf_onesymtab (abfd)] = &t->symtab_hdr; |
4fbb74a6 | 3832 | if (elf_numsections (abfd) > (SHN_LORESERVE & 0xFFFF)) |
9ad5cbcf | 3833 | { |
6a40cf0c NC |
3834 | elf_section_list * entry = elf_symtab_shndx_list (abfd); |
3835 | BFD_ASSERT (entry != NULL); | |
3836 | i_shdrp[entry->ndx] = & entry->hdr; | |
3837 | entry->hdr.sh_link = elf_onesymtab (abfd); | |
9ad5cbcf | 3838 | } |
12bd6957 AM |
3839 | i_shdrp[elf_strtab_sec (abfd)] = &t->strtab_hdr; |
3840 | t->symtab_hdr.sh_link = elf_strtab_sec (abfd); | |
252b5132 | 3841 | } |
38ce5b11 | 3842 | |
252b5132 RH |
3843 | for (sec = abfd->sections; sec; sec = sec->next) |
3844 | { | |
252b5132 | 3845 | asection *s; |
252b5132 | 3846 | |
91d6fa6a NC |
3847 | d = elf_section_data (sec); |
3848 | ||
252b5132 | 3849 | i_shdrp[d->this_idx] = &d->this_hdr; |
d4730f92 BS |
3850 | if (d->rel.idx != 0) |
3851 | i_shdrp[d->rel.idx] = d->rel.hdr; | |
3852 | if (d->rela.idx != 0) | |
3853 | i_shdrp[d->rela.idx] = d->rela.hdr; | |
252b5132 RH |
3854 | |
3855 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
3856 | ||
3857 | /* sh_link of a reloc section is the section index of the symbol | |
3858 | table. sh_info is the section index of the section to which | |
3859 | the relocation entries apply. */ | |
d4730f92 | 3860 | if (d->rel.idx != 0) |
252b5132 | 3861 | { |
12bd6957 | 3862 | d->rel.hdr->sh_link = elf_onesymtab (abfd); |
d4730f92 | 3863 | d->rel.hdr->sh_info = d->this_idx; |
9ef5d938 | 3864 | d->rel.hdr->sh_flags |= SHF_INFO_LINK; |
252b5132 | 3865 | } |
d4730f92 | 3866 | if (d->rela.idx != 0) |
23bc299b | 3867 | { |
12bd6957 | 3868 | d->rela.hdr->sh_link = elf_onesymtab (abfd); |
d4730f92 | 3869 | d->rela.hdr->sh_info = d->this_idx; |
9ef5d938 | 3870 | d->rela.hdr->sh_flags |= SHF_INFO_LINK; |
23bc299b | 3871 | } |
252b5132 | 3872 | |
38ce5b11 L |
3873 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
3874 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
3875 | { | |
3876 | s = elf_linked_to_section (sec); | |
b71702f1 NC |
3877 | /* We can now have a NULL linked section pointer. |
3878 | This happens when the sh_link field is 0, which is done | |
3879 | when a linked to section is discarded but the linking | |
3880 | section has been retained for some reason. */ | |
38ce5b11 | 3881 | if (s) |
38ce5b11 | 3882 | { |
67411cbf AM |
3883 | /* Check discarded linkonce section. */ |
3884 | if (discarded_section (s)) | |
38ce5b11 | 3885 | { |
67411cbf AM |
3886 | asection *kept; |
3887 | _bfd_error_handler | |
3888 | /* xgettext:c-format */ | |
3889 | (_("%pB: sh_link of section `%pA' points to" | |
3890 | " discarded section `%pA' of `%pB'"), | |
3891 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
3892 | /* Point to the kept section if it has the same | |
3893 | size as the discarded one. */ | |
3894 | kept = _bfd_elf_check_kept_section (s, link_info); | |
3895 | if (kept == NULL) | |
f2876037 | 3896 | { |
f2876037 | 3897 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 3898 | return false; |
f2876037 | 3899 | } |
67411cbf AM |
3900 | s = kept; |
3901 | } | |
3902 | /* Handle objcopy. */ | |
3903 | else if (s->output_section == NULL) | |
3904 | { | |
3905 | _bfd_error_handler | |
3906 | /* xgettext:c-format */ | |
3907 | (_("%pB: sh_link of section `%pA' points to" | |
3908 | " removed section `%pA' of `%pB'"), | |
3909 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
3910 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 3911 | return false; |
f2876037 | 3912 | } |
67411cbf | 3913 | s = s->output_section; |
ccd2ec6a L |
3914 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; |
3915 | } | |
38ce5b11 L |
3916 | } |
3917 | ||
252b5132 RH |
3918 | switch (d->this_hdr.sh_type) |
3919 | { | |
3920 | case SHT_REL: | |
3921 | case SHT_RELA: | |
3922 | /* A reloc section which we are treating as a normal BFD | |
3923 | section. sh_link is the section index of the symbol | |
3924 | table. sh_info is the section index of the section to | |
3925 | which the relocation entries apply. We assume that an | |
3926 | allocated reloc section uses the dynamic symbol table. | |
3927 | FIXME: How can we be sure? */ | |
3928 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3929 | if (s != NULL) | |
3930 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3931 | ||
bce964aa | 3932 | s = elf_get_reloc_section (sec); |
252b5132 | 3933 | if (s != NULL) |
9ef5d938 L |
3934 | { |
3935 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3936 | d->this_hdr.sh_flags |= SHF_INFO_LINK; | |
3937 | } | |
252b5132 RH |
3938 | break; |
3939 | ||
3940 | case SHT_STRTAB: | |
3941 | /* We assume that a section named .stab*str is a stabs | |
3942 | string section. We look for a section with the same name | |
3943 | but without the trailing ``str'', and set its sh_link | |
3944 | field to point to this section. */ | |
08dedd66 | 3945 | if (startswith (sec->name, ".stab") |
252b5132 RH |
3946 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) |
3947 | { | |
3948 | size_t len; | |
3949 | char *alc; | |
3950 | ||
3951 | len = strlen (sec->name); | |
a50b1753 | 3952 | alc = (char *) bfd_malloc (len - 2); |
252b5132 | 3953 | if (alc == NULL) |
0a1b45a2 | 3954 | return false; |
d4c88bbb | 3955 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3956 | alc[len - 3] = '\0'; |
3957 | s = bfd_get_section_by_name (abfd, alc); | |
3958 | free (alc); | |
3959 | if (s != NULL) | |
3960 | { | |
3961 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3962 | ||
3963 | /* This is a .stab section. */ | |
34ca5531 | 3964 | elf_section_data (s)->this_hdr.sh_entsize = 12; |
252b5132 RH |
3965 | } |
3966 | } | |
3967 | break; | |
3968 | ||
3969 | case SHT_DYNAMIC: | |
3970 | case SHT_DYNSYM: | |
3971 | case SHT_GNU_verneed: | |
3972 | case SHT_GNU_verdef: | |
3973 | /* sh_link is the section header index of the string table | |
3974 | used for the dynamic entries, or the symbol table, or the | |
3975 | version strings. */ | |
3976 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3977 | if (s != NULL) | |
3978 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3979 | break; | |
3980 | ||
7f1204bb JJ |
3981 | case SHT_GNU_LIBLIST: |
3982 | /* sh_link is the section header index of the prelink library | |
08a40648 AM |
3983 | list used for the dynamic entries, or the symbol table, or |
3984 | the version strings. */ | |
7f1204bb JJ |
3985 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) |
3986 | ? ".dynstr" : ".gnu.libstr"); | |
3987 | if (s != NULL) | |
3988 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3989 | break; | |
3990 | ||
252b5132 | 3991 | case SHT_HASH: |
fdc90cb4 | 3992 | case SHT_GNU_HASH: |
252b5132 RH |
3993 | case SHT_GNU_versym: |
3994 | /* sh_link is the section header index of the symbol table | |
3995 | this hash table or version table is for. */ | |
3996 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3997 | if (s != NULL) | |
3998 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3999 | break; | |
dbb410c3 AM |
4000 | |
4001 | case SHT_GROUP: | |
12bd6957 | 4002 | d->this_hdr.sh_link = elf_onesymtab (abfd); |
252b5132 RH |
4003 | } |
4004 | } | |
4005 | ||
3e19fb8f L |
4006 | /* Delay setting sh_name to _bfd_elf_write_object_contents so that |
4007 | _bfd_elf_assign_file_positions_for_non_load can convert DWARF | |
4008 | debug section name from .debug_* to .zdebug_* if needed. */ | |
4009 | ||
0a1b45a2 | 4010 | return true; |
252b5132 RH |
4011 | } |
4012 | ||
0a1b45a2 | 4013 | static bool |
217aa764 | 4014 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
4015 | { |
4016 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 4017 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
4018 | if (bed->elf_backend_sym_is_global) |
4019 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 | 4020 | |
e47bf690 | 4021 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0 |
e6f7f6d1 AM |
4022 | || bfd_is_und_section (bfd_asymbol_section (sym)) |
4023 | || bfd_is_com_section (bfd_asymbol_section (sym))); | |
252b5132 RH |
4024 | } |
4025 | ||
76359541 TP |
4026 | /* Filter global symbols of ABFD to include in the import library. All |
4027 | SYMCOUNT symbols of ABFD can be examined from their pointers in | |
4028 | SYMS. Pointers of symbols to keep should be stored contiguously at | |
4029 | the beginning of that array. | |
4030 | ||
4031 | Returns the number of symbols to keep. */ | |
4032 | ||
4033 | unsigned int | |
4034 | _bfd_elf_filter_global_symbols (bfd *abfd, struct bfd_link_info *info, | |
4035 | asymbol **syms, long symcount) | |
4036 | { | |
4037 | long src_count, dst_count = 0; | |
4038 | ||
4039 | for (src_count = 0; src_count < symcount; src_count++) | |
4040 | { | |
4041 | asymbol *sym = syms[src_count]; | |
4042 | char *name = (char *) bfd_asymbol_name (sym); | |
4043 | struct bfd_link_hash_entry *h; | |
4044 | ||
4045 | if (!sym_is_global (abfd, sym)) | |
4046 | continue; | |
4047 | ||
0a1b45a2 | 4048 | h = bfd_link_hash_lookup (info->hash, name, false, false, false); |
5df1bc57 AM |
4049 | if (h == NULL) |
4050 | continue; | |
76359541 TP |
4051 | if (h->type != bfd_link_hash_defined && h->type != bfd_link_hash_defweak) |
4052 | continue; | |
76359541 TP |
4053 | if (h->linker_def || h->ldscript_def) |
4054 | continue; | |
4055 | ||
4056 | syms[dst_count++] = sym; | |
4057 | } | |
4058 | ||
4059 | syms[dst_count] = NULL; | |
4060 | ||
4061 | return dst_count; | |
4062 | } | |
4063 | ||
5372391b | 4064 | /* Don't output section symbols for sections that are not going to be |
c6d8cab4 | 4065 | output, that are duplicates or there is no BFD section. */ |
5372391b | 4066 | |
0a1b45a2 | 4067 | static bool |
5372391b AM |
4068 | ignore_section_sym (bfd *abfd, asymbol *sym) |
4069 | { | |
c6d8cab4 L |
4070 | elf_symbol_type *type_ptr; |
4071 | ||
db0c309f | 4072 | if (sym == NULL) |
0a1b45a2 | 4073 | return false; |
db0c309f | 4074 | |
c6d8cab4 | 4075 | if ((sym->flags & BSF_SECTION_SYM) == 0) |
0a1b45a2 | 4076 | return false; |
c6d8cab4 | 4077 | |
d1bcae83 L |
4078 | /* Ignore the section symbol if it isn't used. */ |
4079 | if ((sym->flags & BSF_SECTION_SYM_USED) == 0) | |
0a1b45a2 | 4080 | return true; |
d1bcae83 | 4081 | |
db0c309f | 4082 | if (sym->section == NULL) |
0a1b45a2 | 4083 | return true; |
db0c309f | 4084 | |
c1229f84 | 4085 | type_ptr = elf_symbol_from (sym); |
c6d8cab4 L |
4086 | return ((type_ptr != NULL |
4087 | && type_ptr->internal_elf_sym.st_shndx != 0 | |
4088 | && bfd_is_abs_section (sym->section)) | |
4089 | || !(sym->section->owner == abfd | |
db0c309f NC |
4090 | || (sym->section->output_section != NULL |
4091 | && sym->section->output_section->owner == abfd | |
2633a79c AM |
4092 | && sym->section->output_offset == 0) |
4093 | || bfd_is_abs_section (sym->section))); | |
5372391b AM |
4094 | } |
4095 | ||
2633a79c AM |
4096 | /* Map symbol from it's internal number to the external number, moving |
4097 | all local symbols to be at the head of the list. */ | |
4098 | ||
0a1b45a2 | 4099 | static bool |
12bd6957 | 4100 | elf_map_symbols (bfd *abfd, unsigned int *pnum_locals) |
252b5132 | 4101 | { |
dc810e39 | 4102 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
4103 | asymbol **syms = bfd_get_outsymbols (abfd); |
4104 | asymbol **sect_syms; | |
dc810e39 AM |
4105 | unsigned int num_locals = 0; |
4106 | unsigned int num_globals = 0; | |
4107 | unsigned int num_locals2 = 0; | |
4108 | unsigned int num_globals2 = 0; | |
7292b3ac | 4109 | unsigned int max_index = 0; |
dc810e39 | 4110 | unsigned int idx; |
252b5132 RH |
4111 | asection *asect; |
4112 | asymbol **new_syms; | |
446f7ed5 | 4113 | size_t amt; |
252b5132 RH |
4114 | |
4115 | #ifdef DEBUG | |
4116 | fprintf (stderr, "elf_map_symbols\n"); | |
4117 | fflush (stderr); | |
4118 | #endif | |
4119 | ||
252b5132 RH |
4120 | for (asect = abfd->sections; asect; asect = asect->next) |
4121 | { | |
4122 | if (max_index < asect->index) | |
4123 | max_index = asect->index; | |
4124 | } | |
4125 | ||
4126 | max_index++; | |
446f7ed5 AM |
4127 | amt = max_index * sizeof (asymbol *); |
4128 | sect_syms = (asymbol **) bfd_zalloc (abfd, amt); | |
252b5132 | 4129 | if (sect_syms == NULL) |
0a1b45a2 | 4130 | return false; |
252b5132 | 4131 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 4132 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 4133 | |
079e9a2f AM |
4134 | /* Init sect_syms entries for any section symbols we have already |
4135 | decided to output. */ | |
252b5132 RH |
4136 | for (idx = 0; idx < symcount; idx++) |
4137 | { | |
dc810e39 | 4138 | asymbol *sym = syms[idx]; |
c044fabd | 4139 | |
252b5132 | 4140 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
0f0a5e58 | 4141 | && sym->value == 0 |
2633a79c AM |
4142 | && !ignore_section_sym (abfd, sym) |
4143 | && !bfd_is_abs_section (sym->section)) | |
252b5132 | 4144 | { |
5372391b | 4145 | asection *sec = sym->section; |
252b5132 | 4146 | |
5372391b AM |
4147 | if (sec->owner != abfd) |
4148 | sec = sec->output_section; | |
252b5132 | 4149 | |
5372391b | 4150 | sect_syms[sec->index] = syms[idx]; |
252b5132 RH |
4151 | } |
4152 | } | |
4153 | ||
252b5132 RH |
4154 | /* Classify all of the symbols. */ |
4155 | for (idx = 0; idx < symcount; idx++) | |
4156 | { | |
2633a79c | 4157 | if (sym_is_global (abfd, syms[idx])) |
252b5132 | 4158 | num_globals++; |
2633a79c AM |
4159 | else if (!ignore_section_sym (abfd, syms[idx])) |
4160 | num_locals++; | |
252b5132 | 4161 | } |
079e9a2f | 4162 | |
5372391b | 4163 | /* We will be adding a section symbol for each normal BFD section. Most |
079e9a2f AM |
4164 | sections will already have a section symbol in outsymbols, but |
4165 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
4166 | at least in that case. */ | |
252b5132 RH |
4167 | for (asect = abfd->sections; asect; asect = asect->next) |
4168 | { | |
d1bcae83 L |
4169 | asymbol *sym = asect->symbol; |
4170 | /* Don't include ignored section symbols. */ | |
4171 | if (!ignore_section_sym (abfd, sym) | |
4172 | && sect_syms[asect->index] == NULL) | |
252b5132 | 4173 | { |
079e9a2f | 4174 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
4175 | num_locals++; |
4176 | else | |
4177 | num_globals++; | |
252b5132 RH |
4178 | } |
4179 | } | |
4180 | ||
4181 | /* Now sort the symbols so the local symbols are first. */ | |
446f7ed5 AM |
4182 | amt = (num_locals + num_globals) * sizeof (asymbol *); |
4183 | new_syms = (asymbol **) bfd_alloc (abfd, amt); | |
252b5132 | 4184 | if (new_syms == NULL) |
0a1b45a2 | 4185 | return false; |
252b5132 RH |
4186 | |
4187 | for (idx = 0; idx < symcount; idx++) | |
4188 | { | |
4189 | asymbol *sym = syms[idx]; | |
dc810e39 | 4190 | unsigned int i; |
252b5132 | 4191 | |
2633a79c AM |
4192 | if (sym_is_global (abfd, sym)) |
4193 | i = num_locals + num_globals2++; | |
d1bcae83 | 4194 | /* Don't include ignored section symbols. */ |
2633a79c | 4195 | else if (!ignore_section_sym (abfd, sym)) |
252b5132 RH |
4196 | i = num_locals2++; |
4197 | else | |
2633a79c | 4198 | continue; |
252b5132 RH |
4199 | new_syms[i] = sym; |
4200 | sym->udata.i = i + 1; | |
4201 | } | |
4202 | for (asect = abfd->sections; asect; asect = asect->next) | |
4203 | { | |
d1bcae83 L |
4204 | asymbol *sym = asect->symbol; |
4205 | if (!ignore_section_sym (abfd, sym) | |
4206 | && sect_syms[asect->index] == NULL) | |
252b5132 | 4207 | { |
dc810e39 | 4208 | unsigned int i; |
252b5132 | 4209 | |
079e9a2f | 4210 | sect_syms[asect->index] = sym; |
252b5132 RH |
4211 | if (!sym_is_global (abfd, sym)) |
4212 | i = num_locals2++; | |
4213 | else | |
4214 | i = num_locals + num_globals2++; | |
4215 | new_syms[i] = sym; | |
4216 | sym->udata.i = i + 1; | |
4217 | } | |
4218 | } | |
4219 | ||
4220 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
4221 | ||
12bd6957 | 4222 | *pnum_locals = num_locals; |
0a1b45a2 | 4223 | return true; |
252b5132 RH |
4224 | } |
4225 | ||
4226 | /* Align to the maximum file alignment that could be required for any | |
4227 | ELF data structure. */ | |
4228 | ||
268b6b39 | 4229 | static inline file_ptr |
217aa764 | 4230 | align_file_position (file_ptr off, int align) |
252b5132 RH |
4231 | { |
4232 | return (off + align - 1) & ~(align - 1); | |
4233 | } | |
4234 | ||
4235 | /* Assign a file position to a section, optionally aligning to the | |
4236 | required section alignment. */ | |
4237 | ||
217aa764 AM |
4238 | file_ptr |
4239 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
4240 | file_ptr offset, | |
0a1b45a2 | 4241 | bool align) |
252b5132 | 4242 | { |
72de5009 AM |
4243 | if (align && i_shdrp->sh_addralign > 1) |
4244 | offset = BFD_ALIGN (offset, i_shdrp->sh_addralign); | |
252b5132 RH |
4245 | i_shdrp->sh_offset = offset; |
4246 | if (i_shdrp->bfd_section != NULL) | |
4247 | i_shdrp->bfd_section->filepos = offset; | |
4248 | if (i_shdrp->sh_type != SHT_NOBITS) | |
4249 | offset += i_shdrp->sh_size; | |
4250 | return offset; | |
4251 | } | |
4252 | ||
4253 | /* Compute the file positions we are going to put the sections at, and | |
4254 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
4255 | is not NULL, this is being called by the ELF backend linker. */ | |
4256 | ||
0a1b45a2 | 4257 | bool |
217aa764 AM |
4258 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
4259 | struct bfd_link_info *link_info) | |
252b5132 | 4260 | { |
9c5bfbb7 | 4261 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
d4730f92 | 4262 | struct fake_section_arg fsargs; |
0a1b45a2 | 4263 | bool failed; |
ef10c3ac | 4264 | struct elf_strtab_hash *strtab = NULL; |
252b5132 | 4265 | Elf_Internal_Shdr *shstrtab_hdr; |
0a1b45a2 | 4266 | bool need_symtab; |
252b5132 RH |
4267 | |
4268 | if (abfd->output_has_begun) | |
0a1b45a2 | 4269 | return true; |
252b5132 RH |
4270 | |
4271 | /* Do any elf backend specific processing first. */ | |
4272 | if (bed->elf_backend_begin_write_processing) | |
4273 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
4274 | ||
ed7e9d0b | 4275 | if (!(*bed->elf_backend_init_file_header) (abfd, link_info)) |
0a1b45a2 | 4276 | return false; |
252b5132 | 4277 | |
0a1b45a2 | 4278 | fsargs.failed = false; |
d4730f92 BS |
4279 | fsargs.link_info = link_info; |
4280 | bfd_map_over_sections (abfd, elf_fake_sections, &fsargs); | |
4281 | if (fsargs.failed) | |
0a1b45a2 | 4282 | return false; |
252b5132 | 4283 | |
da9f89d4 | 4284 | if (!assign_section_numbers (abfd, link_info)) |
0a1b45a2 | 4285 | return false; |
252b5132 RH |
4286 | |
4287 | /* The backend linker builds symbol table information itself. */ | |
3516e984 L |
4288 | need_symtab = (link_info == NULL |
4289 | && (bfd_get_symcount (abfd) > 0 | |
4290 | || ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC)) | |
4291 | == HAS_RELOC))); | |
4292 | if (need_symtab) | |
252b5132 RH |
4293 | { |
4294 | /* Non-zero if doing a relocatable link. */ | |
4295 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
4296 | ||
3d16b64e | 4297 | if (! swap_out_syms (abfd, &strtab, relocatable_p, link_info)) |
0a1b45a2 | 4298 | return false; |
252b5132 RH |
4299 | } |
4300 | ||
0a1b45a2 | 4301 | failed = false; |
1126897b | 4302 | if (link_info == NULL) |
dbb410c3 | 4303 | { |
1126897b | 4304 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 4305 | if (failed) |
0a1b45a2 | 4306 | return false; |
dbb410c3 AM |
4307 | } |
4308 | ||
252b5132 | 4309 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
ed7e9d0b | 4310 | /* sh_name was set in init_file_header. */ |
252b5132 | 4311 | shstrtab_hdr->sh_type = SHT_STRTAB; |
84865015 | 4312 | shstrtab_hdr->sh_flags = bed->elf_strtab_flags; |
252b5132 | 4313 | shstrtab_hdr->sh_addr = 0; |
946748d5 | 4314 | /* sh_size is set in _bfd_elf_assign_file_positions_for_non_load. */ |
252b5132 RH |
4315 | shstrtab_hdr->sh_entsize = 0; |
4316 | shstrtab_hdr->sh_link = 0; | |
4317 | shstrtab_hdr->sh_info = 0; | |
3e19fb8f | 4318 | /* sh_offset is set in _bfd_elf_assign_file_positions_for_non_load. */ |
252b5132 RH |
4319 | shstrtab_hdr->sh_addralign = 1; |
4320 | ||
c84fca4d | 4321 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
0a1b45a2 | 4322 | return false; |
252b5132 | 4323 | |
3516e984 | 4324 | if (need_symtab) |
252b5132 RH |
4325 | { |
4326 | file_ptr off; | |
4327 | Elf_Internal_Shdr *hdr; | |
4328 | ||
12bd6957 | 4329 | off = elf_next_file_pos (abfd); |
252b5132 | 4330 | |
6a40cf0c | 4331 | hdr = & elf_symtab_hdr (abfd); |
0a1b45a2 | 4332 | off = _bfd_elf_assign_file_position_for_section (hdr, off, true); |
252b5132 | 4333 | |
6a40cf0c NC |
4334 | if (elf_symtab_shndx_list (abfd) != NULL) |
4335 | { | |
4336 | hdr = & elf_symtab_shndx_list (abfd)->hdr; | |
4337 | if (hdr->sh_size != 0) | |
0a1b45a2 | 4338 | off = _bfd_elf_assign_file_position_for_section (hdr, off, true); |
6a40cf0c NC |
4339 | /* FIXME: What about other symtab_shndx sections in the list ? */ |
4340 | } | |
9ad5cbcf | 4341 | |
252b5132 | 4342 | hdr = &elf_tdata (abfd)->strtab_hdr; |
0a1b45a2 | 4343 | off = _bfd_elf_assign_file_position_for_section (hdr, off, true); |
252b5132 | 4344 | |
12bd6957 | 4345 | elf_next_file_pos (abfd) = off; |
252b5132 RH |
4346 | |
4347 | /* Now that we know where the .strtab section goes, write it | |
08a40648 | 4348 | out. */ |
252b5132 | 4349 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
ef10c3ac | 4350 | || ! _bfd_elf_strtab_emit (abfd, strtab)) |
0a1b45a2 | 4351 | return false; |
ef10c3ac | 4352 | _bfd_elf_strtab_free (strtab); |
252b5132 RH |
4353 | } |
4354 | ||
0a1b45a2 | 4355 | abfd->output_has_begun = true; |
252b5132 | 4356 | |
0a1b45a2 | 4357 | return true; |
252b5132 RH |
4358 | } |
4359 | ||
8ded5a0f AM |
4360 | /* Make an initial estimate of the size of the program header. If we |
4361 | get the number wrong here, we'll redo section placement. */ | |
4362 | ||
4363 | static bfd_size_type | |
4364 | get_program_header_size (bfd *abfd, struct bfd_link_info *info) | |
4365 | { | |
4366 | size_t segs; | |
4367 | asection *s; | |
2b05f1b7 | 4368 | const struct elf_backend_data *bed; |
8ded5a0f AM |
4369 | |
4370 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
4371 | and one for data. */ | |
4372 | segs = 2; | |
4373 | ||
4374 | s = bfd_get_section_by_name (abfd, ".interp"); | |
1b9e270b | 4375 | if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->size != 0) |
8ded5a0f AM |
4376 | { |
4377 | /* If we have a loadable interpreter section, we need a | |
4378 | PT_INTERP segment. In this case, assume we also need a | |
4379 | PT_PHDR segment, although that may not be true for all | |
4380 | targets. */ | |
e9a38e0f | 4381 | segs += 2; |
8ded5a0f AM |
4382 | } |
4383 | ||
4384 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
4385 | { | |
4386 | /* We need a PT_DYNAMIC segment. */ | |
4387 | ++segs; | |
f210dcff | 4388 | } |
08a40648 | 4389 | |
ceae84aa | 4390 | if (info != NULL && info->relro) |
f210dcff L |
4391 | { |
4392 | /* We need a PT_GNU_RELRO segment. */ | |
4393 | ++segs; | |
8ded5a0f AM |
4394 | } |
4395 | ||
12bd6957 | 4396 | if (elf_eh_frame_hdr (abfd)) |
8ded5a0f AM |
4397 | { |
4398 | /* We need a PT_GNU_EH_FRAME segment. */ | |
4399 | ++segs; | |
4400 | } | |
4401 | ||
12bd6957 | 4402 | if (elf_stack_flags (abfd)) |
8ded5a0f | 4403 | { |
2b05f1b7 L |
4404 | /* We need a PT_GNU_STACK segment. */ |
4405 | ++segs; | |
4406 | } | |
94b11780 | 4407 | |
0a59decb L |
4408 | s = bfd_get_section_by_name (abfd, |
4409 | NOTE_GNU_PROPERTY_SECTION_NAME); | |
4410 | if (s != NULL && s->size != 0) | |
4411 | { | |
4412 | /* We need a PT_GNU_PROPERTY segment. */ | |
4413 | ++segs; | |
4414 | } | |
4415 | ||
2b05f1b7 L |
4416 | for (s = abfd->sections; s != NULL; s = s->next) |
4417 | { | |
8ded5a0f | 4418 | if ((s->flags & SEC_LOAD) != 0 |
23e463ed | 4419 | && elf_section_type (s) == SHT_NOTE) |
8ded5a0f | 4420 | { |
23e463ed | 4421 | unsigned int alignment_power; |
8ded5a0f AM |
4422 | /* We need a PT_NOTE segment. */ |
4423 | ++segs; | |
23e463ed L |
4424 | /* Try to create just one PT_NOTE segment for all adjacent |
4425 | loadable SHT_NOTE sections. gABI requires that within a | |
4426 | PT_NOTE segment (and also inside of each SHT_NOTE section) | |
4427 | each note should have the same alignment. So we check | |
4428 | whether the sections are correctly aligned. */ | |
4429 | alignment_power = s->alignment_power; | |
4430 | while (s->next != NULL | |
4431 | && s->next->alignment_power == alignment_power | |
4432 | && (s->next->flags & SEC_LOAD) != 0 | |
4433 | && elf_section_type (s->next) == SHT_NOTE) | |
4434 | s = s->next; | |
8ded5a0f AM |
4435 | } |
4436 | } | |
4437 | ||
4438 | for (s = abfd->sections; s != NULL; s = s->next) | |
4439 | { | |
4440 | if (s->flags & SEC_THREAD_LOCAL) | |
4441 | { | |
4442 | /* We need a PT_TLS segment. */ | |
4443 | ++segs; | |
4444 | break; | |
4445 | } | |
4446 | } | |
4447 | ||
2b05f1b7 | 4448 | bed = get_elf_backend_data (abfd); |
a91e1603 | 4449 | |
df3a023b AM |
4450 | if ((abfd->flags & D_PAGED) != 0 |
4451 | && (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_mbind) != 0) | |
4452 | { | |
4453 | /* Add a PT_GNU_MBIND segment for each mbind section. */ | |
c410035d AM |
4454 | bfd_vma commonpagesize; |
4455 | unsigned int page_align_power; | |
4456 | ||
4457 | if (info != NULL) | |
4458 | commonpagesize = info->commonpagesize; | |
4459 | else | |
4460 | commonpagesize = bed->commonpagesize; | |
4461 | page_align_power = bfd_log2 (commonpagesize); | |
df3a023b AM |
4462 | for (s = abfd->sections; s != NULL; s = s->next) |
4463 | if (elf_section_flags (s) & SHF_GNU_MBIND) | |
4464 | { | |
4465 | if (elf_section_data (s)->this_hdr.sh_info > PT_GNU_MBIND_NUM) | |
4466 | { | |
4467 | _bfd_error_handler | |
4468 | /* xgettext:c-format */ | |
4469 | (_("%pB: GNU_MBIND section `%pA' has invalid " | |
4470 | "sh_info field: %d"), | |
4471 | abfd, s, elf_section_data (s)->this_hdr.sh_info); | |
4472 | continue; | |
4473 | } | |
4474 | /* Align mbind section to page size. */ | |
4475 | if (s->alignment_power < page_align_power) | |
4476 | s->alignment_power = page_align_power; | |
4477 | segs ++; | |
4478 | } | |
4479 | } | |
4480 | ||
4481 | /* Let the backend count up any program headers it might need. */ | |
4482 | if (bed->elf_backend_additional_program_headers) | |
8ded5a0f AM |
4483 | { |
4484 | int a; | |
4485 | ||
4486 | a = (*bed->elf_backend_additional_program_headers) (abfd, info); | |
4487 | if (a == -1) | |
4488 | abort (); | |
4489 | segs += a; | |
4490 | } | |
4491 | ||
4492 | return segs * bed->s->sizeof_phdr; | |
4493 | } | |
4494 | ||
2ea37f1c NC |
4495 | /* Find the segment that contains the output_section of section. */ |
4496 | ||
4497 | Elf_Internal_Phdr * | |
4498 | _bfd_elf_find_segment_containing_section (bfd * abfd, asection * section) | |
4499 | { | |
4500 | struct elf_segment_map *m; | |
4501 | Elf_Internal_Phdr *p; | |
4502 | ||
12bd6957 | 4503 | for (m = elf_seg_map (abfd), p = elf_tdata (abfd)->phdr; |
2ea37f1c NC |
4504 | m != NULL; |
4505 | m = m->next, p++) | |
4506 | { | |
4507 | int i; | |
4508 | ||
4509 | for (i = m->count - 1; i >= 0; i--) | |
4510 | if (m->sections[i] == section) | |
4511 | return p; | |
4512 | } | |
4513 | ||
4514 | return NULL; | |
4515 | } | |
4516 | ||
252b5132 RH |
4517 | /* Create a mapping from a set of sections to a program segment. */ |
4518 | ||
217aa764 AM |
4519 | static struct elf_segment_map * |
4520 | make_mapping (bfd *abfd, | |
4521 | asection **sections, | |
4522 | unsigned int from, | |
4523 | unsigned int to, | |
0a1b45a2 | 4524 | bool phdr) |
252b5132 RH |
4525 | { |
4526 | struct elf_segment_map *m; | |
4527 | unsigned int i; | |
4528 | asection **hdrpp; | |
986f0783 | 4529 | size_t amt; |
252b5132 | 4530 | |
00bee008 AM |
4531 | amt = sizeof (struct elf_segment_map) - sizeof (asection *); |
4532 | amt += (to - from) * sizeof (asection *); | |
a50b1753 | 4533 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
252b5132 RH |
4534 | if (m == NULL) |
4535 | return NULL; | |
4536 | m->next = NULL; | |
4537 | m->p_type = PT_LOAD; | |
4538 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
4539 | m->sections[i - from] = *hdrpp; | |
4540 | m->count = to - from; | |
4541 | ||
4542 | if (from == 0 && phdr) | |
4543 | { | |
4544 | /* Include the headers in the first PT_LOAD segment. */ | |
4545 | m->includes_filehdr = 1; | |
4546 | m->includes_phdrs = 1; | |
4547 | } | |
4548 | ||
4549 | return m; | |
4550 | } | |
4551 | ||
229fcec5 MM |
4552 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
4553 | on failure. */ | |
4554 | ||
4555 | struct elf_segment_map * | |
4556 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
4557 | { | |
4558 | struct elf_segment_map *m; | |
4559 | ||
a50b1753 | 4560 | m = (struct elf_segment_map *) bfd_zalloc (abfd, |
07d6d2b8 | 4561 | sizeof (struct elf_segment_map)); |
229fcec5 MM |
4562 | if (m == NULL) |
4563 | return NULL; | |
4564 | m->next = NULL; | |
4565 | m->p_type = PT_DYNAMIC; | |
4566 | m->count = 1; | |
4567 | m->sections[0] = dynsec; | |
08a40648 | 4568 | |
229fcec5 MM |
4569 | return m; |
4570 | } | |
4571 | ||
8ded5a0f | 4572 | /* Possibly add or remove segments from the segment map. */ |
252b5132 | 4573 | |
0a1b45a2 | 4574 | static bool |
3dea8fca AM |
4575 | elf_modify_segment_map (bfd *abfd, |
4576 | struct bfd_link_info *info, | |
0a1b45a2 | 4577 | bool remove_empty_load) |
252b5132 | 4578 | { |
252e386e | 4579 | struct elf_segment_map **m; |
8ded5a0f | 4580 | const struct elf_backend_data *bed; |
252b5132 | 4581 | |
8ded5a0f AM |
4582 | /* The placement algorithm assumes that non allocated sections are |
4583 | not in PT_LOAD segments. We ensure this here by removing such | |
4584 | sections from the segment map. We also remove excluded | |
252e386e AM |
4585 | sections. Finally, any PT_LOAD segment without sections is |
4586 | removed. */ | |
12bd6957 | 4587 | m = &elf_seg_map (abfd); |
252e386e | 4588 | while (*m) |
8ded5a0f AM |
4589 | { |
4590 | unsigned int i, new_count; | |
252b5132 | 4591 | |
252e386e | 4592 | for (new_count = 0, i = 0; i < (*m)->count; i++) |
8ded5a0f | 4593 | { |
252e386e AM |
4594 | if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0 |
4595 | && (((*m)->sections[i]->flags & SEC_ALLOC) != 0 | |
4596 | || (*m)->p_type != PT_LOAD)) | |
8ded5a0f | 4597 | { |
252e386e AM |
4598 | (*m)->sections[new_count] = (*m)->sections[i]; |
4599 | new_count++; | |
8ded5a0f AM |
4600 | } |
4601 | } | |
252e386e | 4602 | (*m)->count = new_count; |
252b5132 | 4603 | |
1a9ccd70 NC |
4604 | if (remove_empty_load |
4605 | && (*m)->p_type == PT_LOAD | |
4606 | && (*m)->count == 0 | |
4607 | && !(*m)->includes_phdrs) | |
252e386e AM |
4608 | *m = (*m)->next; |
4609 | else | |
4610 | m = &(*m)->next; | |
8ded5a0f | 4611 | } |
252b5132 | 4612 | |
8ded5a0f AM |
4613 | bed = get_elf_backend_data (abfd); |
4614 | if (bed->elf_backend_modify_segment_map != NULL) | |
252b5132 | 4615 | { |
252e386e | 4616 | if (!(*bed->elf_backend_modify_segment_map) (abfd, info)) |
0a1b45a2 | 4617 | return false; |
252b5132 | 4618 | } |
252b5132 | 4619 | |
0a1b45a2 | 4620 | return true; |
8ded5a0f | 4621 | } |
252b5132 | 4622 | |
dbc88fc1 AM |
4623 | #define IS_TBSS(s) \ |
4624 | ((s->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) == SEC_THREAD_LOCAL) | |
4625 | ||
8ded5a0f | 4626 | /* Set up a mapping from BFD sections to program segments. */ |
252b5132 | 4627 | |
0a1b45a2 | 4628 | bool |
8ded5a0f AM |
4629 | _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) |
4630 | { | |
4631 | unsigned int count; | |
4632 | struct elf_segment_map *m; | |
4633 | asection **sections = NULL; | |
4634 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
0a1b45a2 | 4635 | bool no_user_phdrs; |
252b5132 | 4636 | |
12bd6957 | 4637 | no_user_phdrs = elf_seg_map (abfd) == NULL; |
d324f6d6 RM |
4638 | |
4639 | if (info != NULL) | |
4640 | info->user_phdrs = !no_user_phdrs; | |
4641 | ||
3dea8fca | 4642 | if (no_user_phdrs && bfd_count_sections (abfd) != 0) |
252b5132 | 4643 | { |
8ded5a0f AM |
4644 | asection *s; |
4645 | unsigned int i; | |
4646 | struct elf_segment_map *mfirst; | |
4647 | struct elf_segment_map **pm; | |
4648 | asection *last_hdr; | |
4649 | bfd_vma last_size; | |
00bee008 | 4650 | unsigned int hdr_index; |
8ded5a0f AM |
4651 | bfd_vma maxpagesize; |
4652 | asection **hdrpp; | |
0a1b45a2 AM |
4653 | bool phdr_in_segment; |
4654 | bool writable; | |
4655 | bool executable; | |
446f7ed5 | 4656 | unsigned int tls_count = 0; |
8ded5a0f | 4657 | asection *first_tls = NULL; |
a91e1603 | 4658 | asection *first_mbind = NULL; |
8ded5a0f | 4659 | asection *dynsec, *eh_frame_hdr; |
446f7ed5 | 4660 | size_t amt; |
66631823 CE |
4661 | bfd_vma addr_mask, wrap_to = 0; /* Bytes. */ |
4662 | bfd_size_type phdr_size; /* Octets/bytes. */ | |
502794d4 | 4663 | unsigned int opb = bfd_octets_per_byte (abfd, NULL); |
252b5132 | 4664 | |
8ded5a0f | 4665 | /* Select the allocated sections, and sort them. */ |
252b5132 | 4666 | |
446f7ed5 AM |
4667 | amt = bfd_count_sections (abfd) * sizeof (asection *); |
4668 | sections = (asection **) bfd_malloc (amt); | |
8ded5a0f | 4669 | if (sections == NULL) |
252b5132 | 4670 | goto error_return; |
252b5132 | 4671 | |
8d06853e AM |
4672 | /* Calculate top address, avoiding undefined behaviour of shift |
4673 | left operator when shift count is equal to size of type | |
4674 | being shifted. */ | |
4675 | addr_mask = ((bfd_vma) 1 << (bfd_arch_bits_per_address (abfd) - 1)) - 1; | |
4676 | addr_mask = (addr_mask << 1) + 1; | |
4677 | ||
8ded5a0f AM |
4678 | i = 0; |
4679 | for (s = abfd->sections; s != NULL; s = s->next) | |
4680 | { | |
4681 | if ((s->flags & SEC_ALLOC) != 0) | |
4682 | { | |
48db3297 AM |
4683 | /* target_index is unused until bfd_elf_final_link |
4684 | starts output of section symbols. Use it to make | |
4685 | qsort stable. */ | |
4686 | s->target_index = i; | |
8ded5a0f AM |
4687 | sections[i] = s; |
4688 | ++i; | |
8d06853e | 4689 | /* A wrapping section potentially clashes with header. */ |
66631823 CE |
4690 | if (((s->lma + s->size / opb) & addr_mask) < (s->lma & addr_mask)) |
4691 | wrap_to = (s->lma + s->size / opb) & addr_mask; | |
8ded5a0f AM |
4692 | } |
4693 | } | |
4694 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
4695 | count = i; | |
252b5132 | 4696 | |
8ded5a0f | 4697 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); |
252b5132 | 4698 | |
64029e93 AM |
4699 | phdr_size = elf_program_header_size (abfd); |
4700 | if (phdr_size == (bfd_size_type) -1) | |
4701 | phdr_size = get_program_header_size (abfd, info); | |
4702 | phdr_size += bed->s->sizeof_ehdr; | |
502794d4 CE |
4703 | /* phdr_size is compared to LMA values which are in bytes. */ |
4704 | phdr_size /= opb; | |
c410035d AM |
4705 | if (info != NULL) |
4706 | maxpagesize = info->maxpagesize; | |
4707 | else | |
4708 | maxpagesize = bed->maxpagesize; | |
64029e93 AM |
4709 | if (maxpagesize == 0) |
4710 | maxpagesize = 1; | |
4711 | phdr_in_segment = info != NULL && info->load_phdrs; | |
4712 | if (count != 0 | |
4713 | && (((sections[0]->lma & addr_mask) & (maxpagesize - 1)) | |
4714 | >= (phdr_size & (maxpagesize - 1)))) | |
4715 | /* For compatibility with old scripts that may not be using | |
4716 | SIZEOF_HEADERS, add headers when it looks like space has | |
4717 | been left for them. */ | |
0a1b45a2 | 4718 | phdr_in_segment = true; |
252b5132 | 4719 | |
64029e93 | 4720 | /* Build the mapping. */ |
8ded5a0f AM |
4721 | mfirst = NULL; |
4722 | pm = &mfirst; | |
252b5132 | 4723 | |
8ded5a0f AM |
4724 | /* If we have a .interp section, then create a PT_PHDR segment for |
4725 | the program headers and a PT_INTERP segment for the .interp | |
4726 | section. */ | |
4727 | s = bfd_get_section_by_name (abfd, ".interp"); | |
1b9e270b | 4728 | if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->size != 0) |
8ded5a0f AM |
4729 | { |
4730 | amt = sizeof (struct elf_segment_map); | |
a50b1753 | 4731 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
4732 | if (m == NULL) |
4733 | goto error_return; | |
4734 | m->next = NULL; | |
4735 | m->p_type = PT_PHDR; | |
f882209d | 4736 | m->p_flags = PF_R; |
8ded5a0f AM |
4737 | m->p_flags_valid = 1; |
4738 | m->includes_phdrs = 1; | |
0a1b45a2 | 4739 | phdr_in_segment = true; |
8ded5a0f AM |
4740 | *pm = m; |
4741 | pm = &m->next; | |
252b5132 | 4742 | |
8ded5a0f | 4743 | amt = sizeof (struct elf_segment_map); |
a50b1753 | 4744 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
4745 | if (m == NULL) |
4746 | goto error_return; | |
4747 | m->next = NULL; | |
4748 | m->p_type = PT_INTERP; | |
4749 | m->count = 1; | |
4750 | m->sections[0] = s; | |
4751 | ||
4752 | *pm = m; | |
4753 | pm = &m->next; | |
252b5132 | 4754 | } |
8ded5a0f AM |
4755 | |
4756 | /* Look through the sections. We put sections in the same program | |
4757 | segment when the start of the second section can be placed within | |
4758 | a few bytes of the end of the first section. */ | |
4759 | last_hdr = NULL; | |
4760 | last_size = 0; | |
00bee008 | 4761 | hdr_index = 0; |
0a1b45a2 AM |
4762 | writable = false; |
4763 | executable = false; | |
8ded5a0f AM |
4764 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); |
4765 | if (dynsec != NULL | |
4766 | && (dynsec->flags & SEC_LOAD) == 0) | |
4767 | dynsec = NULL; | |
4768 | ||
64029e93 | 4769 | if ((abfd->flags & D_PAGED) == 0) |
0a1b45a2 | 4770 | phdr_in_segment = false; |
64029e93 | 4771 | |
8ded5a0f AM |
4772 | /* Deal with -Ttext or something similar such that the first section |
4773 | is not adjacent to the program headers. This is an | |
4774 | approximation, since at this point we don't know exactly how many | |
4775 | program headers we will need. */ | |
64029e93 | 4776 | if (phdr_in_segment && count > 0) |
252b5132 | 4777 | { |
66631823 | 4778 | bfd_vma phdr_lma; /* Bytes. */ |
0a1b45a2 | 4779 | bool separate_phdr = false; |
64029e93 AM |
4780 | |
4781 | phdr_lma = (sections[0]->lma - phdr_size) & addr_mask & -maxpagesize; | |
4782 | if (info != NULL | |
4783 | && info->separate_code | |
4784 | && (sections[0]->flags & SEC_CODE) != 0) | |
1a9ccd70 | 4785 | { |
64029e93 AM |
4786 | /* If data sections should be separate from code and |
4787 | thus not executable, and the first section is | |
4788 | executable then put the file and program headers in | |
4789 | their own PT_LOAD. */ | |
0a1b45a2 | 4790 | separate_phdr = true; |
64029e93 AM |
4791 | if ((((phdr_lma + phdr_size - 1) & addr_mask & -maxpagesize) |
4792 | == (sections[0]->lma & addr_mask & -maxpagesize))) | |
4793 | { | |
4794 | /* The file and program headers are currently on the | |
4795 | same page as the first section. Put them on the | |
4796 | previous page if we can. */ | |
4797 | if (phdr_lma >= maxpagesize) | |
4798 | phdr_lma -= maxpagesize; | |
4799 | else | |
0a1b45a2 | 4800 | separate_phdr = false; |
64029e93 AM |
4801 | } |
4802 | } | |
4803 | if ((sections[0]->lma & addr_mask) < phdr_lma | |
4804 | || (sections[0]->lma & addr_mask) < phdr_size) | |
4805 | /* If file and program headers would be placed at the end | |
4806 | of memory then it's probably better to omit them. */ | |
0a1b45a2 | 4807 | phdr_in_segment = false; |
64029e93 AM |
4808 | else if (phdr_lma < wrap_to) |
4809 | /* If a section wraps around to where we'll be placing | |
4810 | file and program headers, then the headers will be | |
4811 | overwritten. */ | |
0a1b45a2 | 4812 | phdr_in_segment = false; |
64029e93 AM |
4813 | else if (separate_phdr) |
4814 | { | |
4815 | m = make_mapping (abfd, sections, 0, 0, phdr_in_segment); | |
4816 | if (m == NULL) | |
4817 | goto error_return; | |
66631823 | 4818 | m->p_paddr = phdr_lma * opb; |
64029e93 AM |
4819 | m->p_vaddr_offset |
4820 | = (sections[0]->vma - phdr_size) & addr_mask & -maxpagesize; | |
4821 | m->p_paddr_valid = 1; | |
4822 | *pm = m; | |
4823 | pm = &m->next; | |
0a1b45a2 | 4824 | phdr_in_segment = false; |
1a9ccd70 | 4825 | } |
252b5132 RH |
4826 | } |
4827 | ||
8ded5a0f | 4828 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) |
252b5132 | 4829 | { |
8ded5a0f | 4830 | asection *hdr; |
0a1b45a2 | 4831 | bool new_segment; |
8ded5a0f AM |
4832 | |
4833 | hdr = *hdrpp; | |
4834 | ||
4835 | /* See if this section and the last one will fit in the same | |
4836 | segment. */ | |
4837 | ||
4838 | if (last_hdr == NULL) | |
4839 | { | |
4840 | /* If we don't have a segment yet, then we don't need a new | |
4841 | one (we build the last one after this loop). */ | |
0a1b45a2 | 4842 | new_segment = false; |
8ded5a0f AM |
4843 | } |
4844 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
4845 | { | |
4846 | /* If this section has a different relation between the | |
4847 | virtual address and the load address, then we need a new | |
4848 | segment. */ | |
0a1b45a2 | 4849 | new_segment = true; |
8ded5a0f | 4850 | } |
b5599592 AM |
4851 | else if (hdr->lma < last_hdr->lma + last_size |
4852 | || last_hdr->lma + last_size < last_hdr->lma) | |
4853 | { | |
4854 | /* If this section has a load address that makes it overlap | |
4855 | the previous section, then we need a new segment. */ | |
0a1b45a2 | 4856 | new_segment = true; |
b5599592 | 4857 | } |
76cb3a89 AM |
4858 | else if ((abfd->flags & D_PAGED) != 0 |
4859 | && (((last_hdr->lma + last_size - 1) & -maxpagesize) | |
4860 | == (hdr->lma & -maxpagesize))) | |
4861 | { | |
4862 | /* If we are demand paged then we can't map two disk | |
4863 | pages onto the same memory page. */ | |
0a1b45a2 | 4864 | new_segment = false; |
76cb3a89 | 4865 | } |
39948a60 NC |
4866 | /* In the next test we have to be careful when last_hdr->lma is close |
4867 | to the end of the address space. If the aligned address wraps | |
4868 | around to the start of the address space, then there are no more | |
4869 | pages left in memory and it is OK to assume that the current | |
4870 | section can be included in the current segment. */ | |
76cb3a89 AM |
4871 | else if ((BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) |
4872 | + maxpagesize > last_hdr->lma) | |
4873 | && (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) | |
4874 | + maxpagesize <= hdr->lma)) | |
8ded5a0f AM |
4875 | { |
4876 | /* If putting this section in this segment would force us to | |
4877 | skip a page in the segment, then we need a new segment. */ | |
0a1b45a2 | 4878 | new_segment = true; |
8ded5a0f AM |
4879 | } |
4880 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 | |
76cb3a89 | 4881 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) |
8ded5a0f | 4882 | { |
e5654c0f AM |
4883 | /* We don't want to put a loaded section after a |
4884 | nonloaded (ie. bss style) section in the same segment | |
4885 | as that will force the non-loaded section to be loaded. | |
76cb3a89 | 4886 | Consider .tbss sections as loaded for this purpose. */ |
0a1b45a2 | 4887 | new_segment = true; |
8ded5a0f AM |
4888 | } |
4889 | else if ((abfd->flags & D_PAGED) == 0) | |
4890 | { | |
4891 | /* If the file is not demand paged, which means that we | |
4892 | don't require the sections to be correctly aligned in the | |
4893 | file, then there is no other reason for a new segment. */ | |
0a1b45a2 | 4894 | new_segment = false; |
8ded5a0f | 4895 | } |
2888249f L |
4896 | else if (info != NULL |
4897 | && info->separate_code | |
4898 | && executable != ((hdr->flags & SEC_CODE) != 0)) | |
4899 | { | |
0a1b45a2 | 4900 | new_segment = true; |
2888249f | 4901 | } |
8ded5a0f | 4902 | else if (! writable |
76cb3a89 | 4903 | && (hdr->flags & SEC_READONLY) == 0) |
8ded5a0f AM |
4904 | { |
4905 | /* We don't want to put a writable section in a read only | |
76cb3a89 | 4906 | segment. */ |
0a1b45a2 | 4907 | new_segment = true; |
8ded5a0f AM |
4908 | } |
4909 | else | |
4910 | { | |
4911 | /* Otherwise, we can use the same segment. */ | |
0a1b45a2 | 4912 | new_segment = false; |
8ded5a0f AM |
4913 | } |
4914 | ||
2889e75b | 4915 | /* Allow interested parties a chance to override our decision. */ |
ceae84aa AM |
4916 | if (last_hdr != NULL |
4917 | && info != NULL | |
4918 | && info->callbacks->override_segment_assignment != NULL) | |
4919 | new_segment | |
4920 | = info->callbacks->override_segment_assignment (info, abfd, hdr, | |
4921 | last_hdr, | |
4922 | new_segment); | |
2889e75b | 4923 | |
8ded5a0f AM |
4924 | if (! new_segment) |
4925 | { | |
4926 | if ((hdr->flags & SEC_READONLY) == 0) | |
0a1b45a2 | 4927 | writable = true; |
2888249f | 4928 | if ((hdr->flags & SEC_CODE) != 0) |
0a1b45a2 | 4929 | executable = true; |
8ded5a0f AM |
4930 | last_hdr = hdr; |
4931 | /* .tbss sections effectively have zero size. */ | |
502794d4 | 4932 | last_size = (!IS_TBSS (hdr) ? hdr->size : 0) / opb; |
8ded5a0f AM |
4933 | continue; |
4934 | } | |
4935 | ||
4936 | /* We need a new program segment. We must create a new program | |
00bee008 | 4937 | header holding all the sections from hdr_index until hdr. */ |
8ded5a0f | 4938 | |
00bee008 | 4939 | m = make_mapping (abfd, sections, hdr_index, i, phdr_in_segment); |
8ded5a0f AM |
4940 | if (m == NULL) |
4941 | goto error_return; | |
4942 | ||
4943 | *pm = m; | |
4944 | pm = &m->next; | |
4945 | ||
252b5132 | 4946 | if ((hdr->flags & SEC_READONLY) == 0) |
0a1b45a2 | 4947 | writable = true; |
8ded5a0f | 4948 | else |
0a1b45a2 | 4949 | writable = false; |
8ded5a0f | 4950 | |
2888249f | 4951 | if ((hdr->flags & SEC_CODE) == 0) |
0a1b45a2 | 4952 | executable = false; |
2888249f | 4953 | else |
0a1b45a2 | 4954 | executable = true; |
2888249f | 4955 | |
baaff79e JJ |
4956 | last_hdr = hdr; |
4957 | /* .tbss sections effectively have zero size. */ | |
502794d4 | 4958 | last_size = (!IS_TBSS (hdr) ? hdr->size : 0) / opb; |
00bee008 | 4959 | hdr_index = i; |
0a1b45a2 | 4960 | phdr_in_segment = false; |
252b5132 RH |
4961 | } |
4962 | ||
86b2281f AM |
4963 | /* Create a final PT_LOAD program segment, but not if it's just |
4964 | for .tbss. */ | |
4965 | if (last_hdr != NULL | |
00bee008 | 4966 | && (i - hdr_index != 1 |
dbc88fc1 | 4967 | || !IS_TBSS (last_hdr))) |
8ded5a0f | 4968 | { |
00bee008 | 4969 | m = make_mapping (abfd, sections, hdr_index, i, phdr_in_segment); |
8ded5a0f AM |
4970 | if (m == NULL) |
4971 | goto error_return; | |
252b5132 | 4972 | |
8ded5a0f AM |
4973 | *pm = m; |
4974 | pm = &m->next; | |
4975 | } | |
252b5132 | 4976 | |
8ded5a0f AM |
4977 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ |
4978 | if (dynsec != NULL) | |
4979 | { | |
4980 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
4981 | if (m == NULL) | |
4982 | goto error_return; | |
4983 | *pm = m; | |
4984 | pm = &m->next; | |
4985 | } | |
252b5132 | 4986 | |
23e463ed | 4987 | /* For each batch of consecutive loadable SHT_NOTE sections, |
1c5265b5 JJ |
4988 | add a PT_NOTE segment. We don't use bfd_get_section_by_name, |
4989 | because if we link together nonloadable .note sections and | |
4990 | loadable .note sections, we will generate two .note sections | |
23e463ed | 4991 | in the output file. */ |
8ded5a0f AM |
4992 | for (s = abfd->sections; s != NULL; s = s->next) |
4993 | { | |
4994 | if ((s->flags & SEC_LOAD) != 0 | |
23e463ed | 4995 | && elf_section_type (s) == SHT_NOTE) |
8ded5a0f | 4996 | { |
1c5265b5 | 4997 | asection *s2; |
23e463ed | 4998 | unsigned int alignment_power = s->alignment_power; |
91d6fa6a NC |
4999 | |
5000 | count = 1; | |
23e463ed L |
5001 | for (s2 = s; s2->next != NULL; s2 = s2->next) |
5002 | { | |
5003 | if (s2->next->alignment_power == alignment_power | |
5004 | && (s2->next->flags & SEC_LOAD) != 0 | |
5005 | && elf_section_type (s2->next) == SHT_NOTE | |
66631823 | 5006 | && align_power (s2->lma + s2->size / opb, |
23e463ed L |
5007 | alignment_power) |
5008 | == s2->next->lma) | |
5009 | count++; | |
5010 | else | |
5011 | break; | |
5012 | } | |
00bee008 AM |
5013 | amt = sizeof (struct elf_segment_map) - sizeof (asection *); |
5014 | amt += count * sizeof (asection *); | |
a50b1753 | 5015 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
5016 | if (m == NULL) |
5017 | goto error_return; | |
5018 | m->next = NULL; | |
5019 | m->p_type = PT_NOTE; | |
1c5265b5 JJ |
5020 | m->count = count; |
5021 | while (count > 1) | |
5022 | { | |
5023 | m->sections[m->count - count--] = s; | |
5024 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
5025 | s = s->next; | |
5026 | } | |
5027 | m->sections[m->count - 1] = s; | |
5028 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
8ded5a0f AM |
5029 | *pm = m; |
5030 | pm = &m->next; | |
5031 | } | |
5032 | if (s->flags & SEC_THREAD_LOCAL) | |
5033 | { | |
5034 | if (! tls_count) | |
5035 | first_tls = s; | |
5036 | tls_count++; | |
5037 | } | |
a91e1603 L |
5038 | if (first_mbind == NULL |
5039 | && (elf_section_flags (s) & SHF_GNU_MBIND) != 0) | |
5040 | first_mbind = s; | |
8ded5a0f | 5041 | } |
252b5132 | 5042 | |
8ded5a0f AM |
5043 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ |
5044 | if (tls_count > 0) | |
5045 | { | |
00bee008 AM |
5046 | amt = sizeof (struct elf_segment_map) - sizeof (asection *); |
5047 | amt += tls_count * sizeof (asection *); | |
a50b1753 | 5048 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
5049 | if (m == NULL) |
5050 | goto error_return; | |
5051 | m->next = NULL; | |
5052 | m->p_type = PT_TLS; | |
5053 | m->count = tls_count; | |
5054 | /* Mandated PF_R. */ | |
5055 | m->p_flags = PF_R; | |
5056 | m->p_flags_valid = 1; | |
d923cae0 | 5057 | s = first_tls; |
446f7ed5 | 5058 | for (i = 0; i < tls_count; ++i) |
8ded5a0f | 5059 | { |
d923cae0 L |
5060 | if ((s->flags & SEC_THREAD_LOCAL) == 0) |
5061 | { | |
5062 | _bfd_error_handler | |
871b3ab2 | 5063 | (_("%pB: TLS sections are not adjacent:"), abfd); |
d923cae0 L |
5064 | s = first_tls; |
5065 | i = 0; | |
446f7ed5 | 5066 | while (i < tls_count) |
d923cae0 L |
5067 | { |
5068 | if ((s->flags & SEC_THREAD_LOCAL) != 0) | |
5069 | { | |
871b3ab2 | 5070 | _bfd_error_handler (_(" TLS: %pA"), s); |
d923cae0 L |
5071 | i++; |
5072 | } | |
5073 | else | |
871b3ab2 | 5074 | _bfd_error_handler (_(" non-TLS: %pA"), s); |
d923cae0 L |
5075 | s = s->next; |
5076 | } | |
5077 | bfd_set_error (bfd_error_bad_value); | |
5078 | goto error_return; | |
5079 | } | |
5080 | m->sections[i] = s; | |
5081 | s = s->next; | |
8ded5a0f | 5082 | } |
252b5132 | 5083 | |
8ded5a0f AM |
5084 | *pm = m; |
5085 | pm = &m->next; | |
5086 | } | |
252b5132 | 5087 | |
df3a023b AM |
5088 | if (first_mbind |
5089 | && (abfd->flags & D_PAGED) != 0 | |
5090 | && (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_mbind) != 0) | |
a91e1603 L |
5091 | for (s = first_mbind; s != NULL; s = s->next) |
5092 | if ((elf_section_flags (s) & SHF_GNU_MBIND) != 0 | |
df3a023b | 5093 | && elf_section_data (s)->this_hdr.sh_info <= PT_GNU_MBIND_NUM) |
a91e1603 L |
5094 | { |
5095 | /* Mandated PF_R. */ | |
5096 | unsigned long p_flags = PF_R; | |
5097 | if ((s->flags & SEC_READONLY) == 0) | |
5098 | p_flags |= PF_W; | |
5099 | if ((s->flags & SEC_CODE) != 0) | |
5100 | p_flags |= PF_X; | |
5101 | ||
5102 | amt = sizeof (struct elf_segment_map) + sizeof (asection *); | |
5103 | m = bfd_zalloc (abfd, amt); | |
5104 | if (m == NULL) | |
5105 | goto error_return; | |
5106 | m->next = NULL; | |
5107 | m->p_type = (PT_GNU_MBIND_LO | |
5108 | + elf_section_data (s)->this_hdr.sh_info); | |
5109 | m->count = 1; | |
5110 | m->p_flags_valid = 1; | |
5111 | m->sections[0] = s; | |
5112 | m->p_flags = p_flags; | |
5113 | ||
5114 | *pm = m; | |
5115 | pm = &m->next; | |
5116 | } | |
5117 | ||
0a59decb L |
5118 | s = bfd_get_section_by_name (abfd, |
5119 | NOTE_GNU_PROPERTY_SECTION_NAME); | |
5120 | if (s != NULL && s->size != 0) | |
5121 | { | |
5122 | amt = sizeof (struct elf_segment_map) + sizeof (asection *); | |
5123 | m = bfd_zalloc (abfd, amt); | |
5124 | if (m == NULL) | |
5125 | goto error_return; | |
5126 | m->next = NULL; | |
5127 | m->p_type = PT_GNU_PROPERTY; | |
5128 | m->count = 1; | |
5129 | m->p_flags_valid = 1; | |
5130 | m->sections[0] = s; | |
5131 | m->p_flags = PF_R; | |
5132 | *pm = m; | |
5133 | pm = &m->next; | |
5134 | } | |
5135 | ||
8ded5a0f AM |
5136 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
5137 | segment. */ | |
12bd6957 | 5138 | eh_frame_hdr = elf_eh_frame_hdr (abfd); |
8ded5a0f AM |
5139 | if (eh_frame_hdr != NULL |
5140 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
252b5132 | 5141 | { |
dc810e39 | 5142 | amt = sizeof (struct elf_segment_map); |
a50b1753 | 5143 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
252b5132 RH |
5144 | if (m == NULL) |
5145 | goto error_return; | |
5146 | m->next = NULL; | |
8ded5a0f | 5147 | m->p_type = PT_GNU_EH_FRAME; |
252b5132 | 5148 | m->count = 1; |
8ded5a0f | 5149 | m->sections[0] = eh_frame_hdr->output_section; |
252b5132 RH |
5150 | |
5151 | *pm = m; | |
5152 | pm = &m->next; | |
5153 | } | |
13ae64f3 | 5154 | |
12bd6957 | 5155 | if (elf_stack_flags (abfd)) |
13ae64f3 | 5156 | { |
8ded5a0f | 5157 | amt = sizeof (struct elf_segment_map); |
a50b1753 | 5158 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
5159 | if (m == NULL) |
5160 | goto error_return; | |
5161 | m->next = NULL; | |
2b05f1b7 | 5162 | m->p_type = PT_GNU_STACK; |
12bd6957 | 5163 | m->p_flags = elf_stack_flags (abfd); |
04c3a755 | 5164 | m->p_align = bed->stack_align; |
8ded5a0f | 5165 | m->p_flags_valid = 1; |
04c3a755 NS |
5166 | m->p_align_valid = m->p_align != 0; |
5167 | if (info->stacksize > 0) | |
5168 | { | |
5169 | m->p_size = info->stacksize; | |
5170 | m->p_size_valid = 1; | |
5171 | } | |
252b5132 | 5172 | |
8ded5a0f AM |
5173 | *pm = m; |
5174 | pm = &m->next; | |
5175 | } | |
65765700 | 5176 | |
ceae84aa | 5177 | if (info != NULL && info->relro) |
8ded5a0f | 5178 | { |
f210dcff L |
5179 | for (m = mfirst; m != NULL; m = m->next) |
5180 | { | |
3832a4d8 AM |
5181 | if (m->p_type == PT_LOAD |
5182 | && m->count != 0 | |
5183 | && m->sections[0]->vma >= info->relro_start | |
5184 | && m->sections[0]->vma < info->relro_end) | |
f210dcff | 5185 | { |
3832a4d8 AM |
5186 | i = m->count; |
5187 | while (--i != (unsigned) -1) | |
ec2e748a NC |
5188 | { |
5189 | if (m->sections[i]->size > 0 | |
5190 | && (m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) | |
5191 | == (SEC_LOAD | SEC_HAS_CONTENTS)) | |
5192 | break; | |
5193 | } | |
3832a4d8 | 5194 | |
43a8475c | 5195 | if (i != (unsigned) -1) |
f210dcff L |
5196 | break; |
5197 | } | |
be01b344 | 5198 | } |
f210dcff L |
5199 | |
5200 | /* Make a PT_GNU_RELRO segment only when it isn't empty. */ | |
5201 | if (m != NULL) | |
5202 | { | |
5203 | amt = sizeof (struct elf_segment_map); | |
a50b1753 | 5204 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
f210dcff L |
5205 | if (m == NULL) |
5206 | goto error_return; | |
5207 | m->next = NULL; | |
5208 | m->p_type = PT_GNU_RELRO; | |
f210dcff L |
5209 | *pm = m; |
5210 | pm = &m->next; | |
5211 | } | |
8ded5a0f | 5212 | } |
9ee5e499 | 5213 | |
8ded5a0f | 5214 | free (sections); |
12bd6957 | 5215 | elf_seg_map (abfd) = mfirst; |
9ee5e499 JJ |
5216 | } |
5217 | ||
3dea8fca | 5218 | if (!elf_modify_segment_map (abfd, info, no_user_phdrs)) |
0a1b45a2 | 5219 | return false; |
8c37241b | 5220 | |
12bd6957 | 5221 | for (count = 0, m = elf_seg_map (abfd); m != NULL; m = m->next) |
8ded5a0f | 5222 | ++count; |
12bd6957 | 5223 | elf_program_header_size (abfd) = count * bed->s->sizeof_phdr; |
252b5132 | 5224 | |
0a1b45a2 | 5225 | return true; |
252b5132 RH |
5226 | |
5227 | error_return: | |
c9594989 | 5228 | free (sections); |
0a1b45a2 | 5229 | return false; |
252b5132 RH |
5230 | } |
5231 | ||
5232 | /* Sort sections by address. */ | |
5233 | ||
5234 | static int | |
217aa764 | 5235 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
5236 | { |
5237 | const asection *sec1 = *(const asection **) arg1; | |
5238 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 5239 | bfd_size_type size1, size2; |
252b5132 RH |
5240 | |
5241 | /* Sort by LMA first, since this is the address used to | |
5242 | place the section into a segment. */ | |
5243 | if (sec1->lma < sec2->lma) | |
5244 | return -1; | |
5245 | else if (sec1->lma > sec2->lma) | |
5246 | return 1; | |
5247 | ||
5248 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
5249 | the same, and this will do nothing. */ | |
5250 | if (sec1->vma < sec2->vma) | |
5251 | return -1; | |
5252 | else if (sec1->vma > sec2->vma) | |
5253 | return 1; | |
5254 | ||
5255 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
5256 | ||
8d748d1d AM |
5257 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 \ |
5258 | && (x)->size != 0) | |
252b5132 RH |
5259 | |
5260 | if (TOEND (sec1)) | |
5261 | { | |
48db3297 | 5262 | if (!TOEND (sec2)) |
252b5132 RH |
5263 | return 1; |
5264 | } | |
00a7cdc5 | 5265 | else if (TOEND (sec2)) |
252b5132 RH |
5266 | return -1; |
5267 | ||
5268 | #undef TOEND | |
5269 | ||
00a7cdc5 NC |
5270 | /* Sort by size, to put zero sized sections |
5271 | before others at the same address. */ | |
252b5132 | 5272 | |
eea6121a AM |
5273 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
5274 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
5275 | |
5276 | if (size1 < size2) | |
252b5132 | 5277 | return -1; |
eecdbe52 | 5278 | if (size1 > size2) |
252b5132 RH |
5279 | return 1; |
5280 | ||
5281 | return sec1->target_index - sec2->target_index; | |
5282 | } | |
5283 | ||
30fe1832 AM |
5284 | /* This qsort comparison functions sorts PT_LOAD segments first and |
5285 | by p_paddr, for assign_file_positions_for_load_sections. */ | |
5286 | ||
5287 | static int | |
5288 | elf_sort_segments (const void *arg1, const void *arg2) | |
5289 | { | |
5290 | const struct elf_segment_map *m1 = *(const struct elf_segment_map **) arg1; | |
5291 | const struct elf_segment_map *m2 = *(const struct elf_segment_map **) arg2; | |
5292 | ||
5293 | if (m1->p_type != m2->p_type) | |
5294 | { | |
5295 | if (m1->p_type == PT_NULL) | |
5296 | return 1; | |
5297 | if (m2->p_type == PT_NULL) | |
5298 | return -1; | |
5299 | return m1->p_type < m2->p_type ? -1 : 1; | |
5300 | } | |
5301 | if (m1->includes_filehdr != m2->includes_filehdr) | |
5302 | return m1->includes_filehdr ? -1 : 1; | |
5303 | if (m1->no_sort_lma != m2->no_sort_lma) | |
5304 | return m1->no_sort_lma ? -1 : 1; | |
5305 | if (m1->p_type == PT_LOAD && !m1->no_sort_lma) | |
5306 | { | |
4b3ecb3b | 5307 | bfd_vma lma1, lma2; /* Octets. */ |
30fe1832 AM |
5308 | lma1 = 0; |
5309 | if (m1->p_paddr_valid) | |
4b3ecb3b | 5310 | lma1 = m1->p_paddr; |
30fe1832 | 5311 | else if (m1->count != 0) |
4b3ecb3b AM |
5312 | { |
5313 | unsigned int opb = bfd_octets_per_byte (m1->sections[0]->owner, | |
5314 | m1->sections[0]); | |
5315 | lma1 = (m1->sections[0]->lma + m1->p_vaddr_offset) * opb; | |
5316 | } | |
30fe1832 AM |
5317 | lma2 = 0; |
5318 | if (m2->p_paddr_valid) | |
4b3ecb3b | 5319 | lma2 = m2->p_paddr; |
30fe1832 | 5320 | else if (m2->count != 0) |
4b3ecb3b AM |
5321 | { |
5322 | unsigned int opb = bfd_octets_per_byte (m2->sections[0]->owner, | |
5323 | m2->sections[0]); | |
5324 | lma2 = (m2->sections[0]->lma + m2->p_vaddr_offset) * opb; | |
5325 | } | |
30fe1832 AM |
5326 | if (lma1 != lma2) |
5327 | return lma1 < lma2 ? -1 : 1; | |
5328 | } | |
5329 | if (m1->idx != m2->idx) | |
5330 | return m1->idx < m2->idx ? -1 : 1; | |
5331 | return 0; | |
5332 | } | |
5333 | ||
340b6d91 AC |
5334 | /* Ian Lance Taylor writes: |
5335 | ||
5336 | We shouldn't be using % with a negative signed number. That's just | |
5337 | not good. We have to make sure either that the number is not | |
5338 | negative, or that the number has an unsigned type. When the types | |
5339 | are all the same size they wind up as unsigned. When file_ptr is a | |
5340 | larger signed type, the arithmetic winds up as signed long long, | |
5341 | which is wrong. | |
5342 | ||
5343 | What we're trying to say here is something like ``increase OFF by | |
5344 | the least amount that will cause it to be equal to the VMA modulo | |
5345 | the page size.'' */ | |
5346 | /* In other words, something like: | |
5347 | ||
5348 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
5349 | off_offset = off % bed->maxpagesize; | |
5350 | if (vma_offset < off_offset) | |
5351 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
5352 | else | |
5353 | adjustment = vma_offset - off_offset; | |
08a40648 | 5354 | |
de194d85 | 5355 | which can be collapsed into the expression below. */ |
340b6d91 AC |
5356 | |
5357 | static file_ptr | |
5358 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
5359 | { | |
dc9155b2 NC |
5360 | /* PR binutils/16199: Handle an alignment of zero. */ |
5361 | if (maxpagesize == 0) | |
5362 | maxpagesize = 1; | |
340b6d91 AC |
5363 | return ((vma - off) % maxpagesize); |
5364 | } | |
5365 | ||
6d33f217 L |
5366 | static void |
5367 | print_segment_map (const struct elf_segment_map *m) | |
5368 | { | |
5369 | unsigned int j; | |
5370 | const char *pt = get_segment_type (m->p_type); | |
5371 | char buf[32]; | |
5372 | ||
5373 | if (pt == NULL) | |
5374 | { | |
5375 | if (m->p_type >= PT_LOPROC && m->p_type <= PT_HIPROC) | |
5376 | sprintf (buf, "LOPROC+%7.7x", | |
5377 | (unsigned int) (m->p_type - PT_LOPROC)); | |
5378 | else if (m->p_type >= PT_LOOS && m->p_type <= PT_HIOS) | |
5379 | sprintf (buf, "LOOS+%7.7x", | |
5380 | (unsigned int) (m->p_type - PT_LOOS)); | |
5381 | else | |
5382 | snprintf (buf, sizeof (buf), "%8.8x", | |
5383 | (unsigned int) m->p_type); | |
5384 | pt = buf; | |
5385 | } | |
4a97a0e5 | 5386 | fflush (stdout); |
6d33f217 L |
5387 | fprintf (stderr, "%s:", pt); |
5388 | for (j = 0; j < m->count; j++) | |
5389 | fprintf (stderr, " %s", m->sections [j]->name); | |
5390 | putc ('\n',stderr); | |
4a97a0e5 | 5391 | fflush (stderr); |
6d33f217 L |
5392 | } |
5393 | ||
0a1b45a2 | 5394 | static bool |
32812159 AM |
5395 | write_zeros (bfd *abfd, file_ptr pos, bfd_size_type len) |
5396 | { | |
5397 | void *buf; | |
0a1b45a2 | 5398 | bool ret; |
32812159 AM |
5399 | |
5400 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
0a1b45a2 | 5401 | return false; |
32812159 AM |
5402 | buf = bfd_zmalloc (len); |
5403 | if (buf == NULL) | |
0a1b45a2 | 5404 | return false; |
32812159 AM |
5405 | ret = bfd_bwrite (buf, len, abfd) == len; |
5406 | free (buf); | |
5407 | return ret; | |
5408 | } | |
5409 | ||
252b5132 RH |
5410 | /* Assign file positions to the sections based on the mapping from |
5411 | sections to segments. This function also sets up some fields in | |
f3520d2f | 5412 | the file header. */ |
252b5132 | 5413 | |
0a1b45a2 | 5414 | static bool |
f3520d2f AM |
5415 | assign_file_positions_for_load_sections (bfd *abfd, |
5416 | struct bfd_link_info *link_info) | |
252b5132 RH |
5417 | { |
5418 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 5419 | struct elf_segment_map *m; |
30fe1832 | 5420 | struct elf_segment_map *phdr_load_seg; |
252b5132 | 5421 | Elf_Internal_Phdr *phdrs; |
252b5132 | 5422 | Elf_Internal_Phdr *p; |
502794d4 | 5423 | file_ptr off; /* Octets. */ |
3f570048 | 5424 | bfd_size_type maxpagesize; |
30fe1832 | 5425 | unsigned int alloc, actual; |
0920dee7 | 5426 | unsigned int i, j; |
30fe1832 | 5427 | struct elf_segment_map **sorted_seg_map; |
502794d4 | 5428 | unsigned int opb = bfd_octets_per_byte (abfd, NULL); |
252b5132 | 5429 | |
e36284ab | 5430 | if (link_info == NULL |
ceae84aa | 5431 | && !_bfd_elf_map_sections_to_segments (abfd, link_info)) |
0a1b45a2 | 5432 | return false; |
252b5132 | 5433 | |
8ded5a0f | 5434 | alloc = 0; |
12bd6957 | 5435 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
30fe1832 | 5436 | m->idx = alloc++; |
252b5132 | 5437 | |
82f2dbf7 NC |
5438 | if (alloc) |
5439 | { | |
5440 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
5441 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
5442 | } | |
5443 | else | |
5444 | { | |
5445 | /* PR binutils/12467. */ | |
5446 | elf_elfheader (abfd)->e_phoff = 0; | |
5447 | elf_elfheader (abfd)->e_phentsize = 0; | |
5448 | } | |
d324f6d6 | 5449 | |
8ded5a0f | 5450 | elf_elfheader (abfd)->e_phnum = alloc; |
252b5132 | 5451 | |
12bd6957 | 5452 | if (elf_program_header_size (abfd) == (bfd_size_type) -1) |
30fe1832 AM |
5453 | { |
5454 | actual = alloc; | |
5455 | elf_program_header_size (abfd) = alloc * bed->s->sizeof_phdr; | |
5456 | } | |
8ded5a0f | 5457 | else |
30fe1832 AM |
5458 | { |
5459 | actual = elf_program_header_size (abfd) / bed->s->sizeof_phdr; | |
5460 | BFD_ASSERT (elf_program_header_size (abfd) | |
5461 | == actual * bed->s->sizeof_phdr); | |
5462 | BFD_ASSERT (actual >= alloc); | |
5463 | } | |
252b5132 RH |
5464 | |
5465 | if (alloc == 0) | |
f3520d2f | 5466 | { |
12bd6957 | 5467 | elf_next_file_pos (abfd) = bed->s->sizeof_ehdr; |
0a1b45a2 | 5468 | return true; |
f3520d2f | 5469 | } |
252b5132 | 5470 | |
12bd6957 | 5471 | /* We're writing the size in elf_program_header_size (abfd), |
57268894 HPN |
5472 | see assign_file_positions_except_relocs, so make sure we have |
5473 | that amount allocated, with trailing space cleared. | |
12bd6957 AM |
5474 | The variable alloc contains the computed need, while |
5475 | elf_program_header_size (abfd) contains the size used for the | |
57268894 HPN |
5476 | layout. |
5477 | See ld/emultempl/elf-generic.em:gld${EMULATION_NAME}_map_segments | |
5478 | where the layout is forced to according to a larger size in the | |
5479 | last iterations for the testcase ld-elf/header. */ | |
30fe1832 AM |
5480 | phdrs = bfd_zalloc (abfd, (actual * sizeof (*phdrs) |
5481 | + alloc * sizeof (*sorted_seg_map))); | |
5482 | sorted_seg_map = (struct elf_segment_map **) (phdrs + actual); | |
f3520d2f | 5483 | elf_tdata (abfd)->phdr = phdrs; |
252b5132 | 5484 | if (phdrs == NULL) |
0a1b45a2 | 5485 | return false; |
252b5132 | 5486 | |
30fe1832 | 5487 | for (m = elf_seg_map (abfd), j = 0; m != NULL; m = m->next, j++) |
252b5132 | 5488 | { |
30fe1832 | 5489 | sorted_seg_map[j] = m; |
252b5132 | 5490 | /* If elf_segment_map is not from map_sections_to_segments, the |
08a40648 | 5491 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
5492 | not be done to the PT_NOTE section of a corefile, which may |
5493 | contain several pseudo-sections artificially created by bfd. | |
5494 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
5495 | if (m->count > 1 |
5496 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 5497 | && m->p_type == PT_NOTE)) |
48db3297 AM |
5498 | { |
5499 | for (i = 0; i < m->count; i++) | |
5500 | m->sections[i]->target_index = i; | |
5501 | qsort (m->sections, (size_t) m->count, sizeof (asection *), | |
5502 | elf_sort_sections); | |
5503 | } | |
30fe1832 AM |
5504 | } |
5505 | if (alloc > 1) | |
5506 | qsort (sorted_seg_map, alloc, sizeof (*sorted_seg_map), | |
5507 | elf_sort_segments); | |
5508 | ||
5509 | maxpagesize = 1; | |
5510 | if ((abfd->flags & D_PAGED) != 0) | |
c410035d AM |
5511 | { |
5512 | if (link_info != NULL) | |
5513 | maxpagesize = link_info->maxpagesize; | |
5514 | else | |
5515 | maxpagesize = bed->maxpagesize; | |
5516 | } | |
30fe1832 AM |
5517 | |
5518 | /* Sections must map to file offsets past the ELF file header. */ | |
5519 | off = bed->s->sizeof_ehdr; | |
5520 | /* And if one of the PT_LOAD headers doesn't include the program | |
5521 | headers then we'll be mapping program headers in the usual | |
5522 | position after the ELF file header. */ | |
5523 | phdr_load_seg = NULL; | |
5524 | for (j = 0; j < alloc; j++) | |
5525 | { | |
5526 | m = sorted_seg_map[j]; | |
5527 | if (m->p_type != PT_LOAD) | |
5528 | break; | |
5529 | if (m->includes_phdrs) | |
5530 | { | |
5531 | phdr_load_seg = m; | |
5532 | break; | |
5533 | } | |
5534 | } | |
5535 | if (phdr_load_seg == NULL) | |
5536 | off += actual * bed->s->sizeof_phdr; | |
5537 | ||
5538 | for (j = 0; j < alloc; j++) | |
5539 | { | |
5540 | asection **secpp; | |
502794d4 | 5541 | bfd_vma off_adjust; /* Octets. */ |
0a1b45a2 | 5542 | bool no_contents; |
252b5132 | 5543 | |
b301b248 AM |
5544 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
5545 | number of sections with contents contributing to both p_filesz | |
5546 | and p_memsz, followed by a number of sections with no contents | |
5547 | that just contribute to p_memsz. In this loop, OFF tracks next | |
02bf8d82 | 5548 | available file offset for PT_LOAD and PT_NOTE segments. */ |
30fe1832 AM |
5549 | m = sorted_seg_map[j]; |
5550 | p = phdrs + m->idx; | |
252b5132 | 5551 | p->p_type = m->p_type; |
28a7f3e7 | 5552 | p->p_flags = m->p_flags; |
252b5132 | 5553 | |
3f570048 | 5554 | if (m->count == 0) |
502794d4 | 5555 | p->p_vaddr = m->p_vaddr_offset * opb; |
3f570048 | 5556 | else |
502794d4 | 5557 | p->p_vaddr = (m->sections[0]->vma + m->p_vaddr_offset) * opb; |
3f570048 AM |
5558 | |
5559 | if (m->p_paddr_valid) | |
5560 | p->p_paddr = m->p_paddr; | |
5561 | else if (m->count == 0) | |
5562 | p->p_paddr = 0; | |
5563 | else | |
502794d4 | 5564 | p->p_paddr = (m->sections[0]->lma + m->p_vaddr_offset) * opb; |
3f570048 AM |
5565 | |
5566 | if (p->p_type == PT_LOAD | |
5567 | && (abfd->flags & D_PAGED) != 0) | |
5568 | { | |
5569 | /* p_align in demand paged PT_LOAD segments effectively stores | |
5570 | the maximum page size. When copying an executable with | |
5571 | objcopy, we set m->p_align from the input file. Use this | |
5572 | value for maxpagesize rather than bed->maxpagesize, which | |
5573 | may be different. Note that we use maxpagesize for PT_TLS | |
5574 | segment alignment later in this function, so we are relying | |
5575 | on at least one PT_LOAD segment appearing before a PT_TLS | |
5576 | segment. */ | |
5577 | if (m->p_align_valid) | |
5578 | maxpagesize = m->p_align; | |
5579 | ||
5580 | p->p_align = maxpagesize; | |
5581 | } | |
3271a814 NS |
5582 | else if (m->p_align_valid) |
5583 | p->p_align = m->p_align; | |
e970b90a DJ |
5584 | else if (m->count == 0) |
5585 | p->p_align = 1 << bed->s->log_file_align; | |
30fe1832 AM |
5586 | |
5587 | if (m == phdr_load_seg) | |
5588 | { | |
5589 | if (!m->includes_filehdr) | |
5590 | p->p_offset = off; | |
5591 | off += actual * bed->s->sizeof_phdr; | |
5592 | } | |
3f570048 | 5593 | |
0a1b45a2 | 5594 | no_contents = false; |
bf988460 | 5595 | off_adjust = 0; |
252b5132 | 5596 | if (p->p_type == PT_LOAD |
b301b248 | 5597 | && m->count > 0) |
252b5132 | 5598 | { |
66631823 | 5599 | bfd_size_type align; /* Bytes. */ |
a49e53ed | 5600 | unsigned int align_power = 0; |
b301b248 | 5601 | |
3271a814 NS |
5602 | if (m->p_align_valid) |
5603 | align = p->p_align; | |
5604 | else | |
252b5132 | 5605 | { |
3271a814 NS |
5606 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
5607 | { | |
5608 | unsigned int secalign; | |
08a40648 | 5609 | |
fd361982 | 5610 | secalign = bfd_section_alignment (*secpp); |
3271a814 NS |
5611 | if (secalign > align_power) |
5612 | align_power = secalign; | |
5613 | } | |
5614 | align = (bfd_size_type) 1 << align_power; | |
5615 | if (align < maxpagesize) | |
5616 | align = maxpagesize; | |
b301b248 | 5617 | } |
252b5132 | 5618 | |
02bf8d82 AM |
5619 | for (i = 0; i < m->count; i++) |
5620 | if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
5621 | /* If we aren't making room for this section, then | |
5622 | it must be SHT_NOBITS regardless of what we've | |
5623 | set via struct bfd_elf_special_section. */ | |
5624 | elf_section_type (m->sections[i]) = SHT_NOBITS; | |
5625 | ||
bf988460 | 5626 | /* Find out whether this segment contains any loadable |
aea274d3 | 5627 | sections. */ |
0a1b45a2 | 5628 | no_contents = true; |
aea274d3 AM |
5629 | for (i = 0; i < m->count; i++) |
5630 | if (elf_section_type (m->sections[i]) != SHT_NOBITS) | |
5631 | { | |
0a1b45a2 | 5632 | no_contents = false; |
aea274d3 AM |
5633 | break; |
5634 | } | |
bf988460 | 5635 | |
66631823 | 5636 | off_adjust = vma_page_aligned_bias (p->p_vaddr, off, align * opb); |
a8c75b76 AM |
5637 | |
5638 | /* Broken hardware and/or kernel require that files do not | |
5639 | map the same page with different permissions on some hppa | |
5640 | processors. */ | |
30fe1832 AM |
5641 | if (j != 0 |
5642 | && (abfd->flags & D_PAGED) != 0 | |
a8c75b76 AM |
5643 | && bed->no_page_alias |
5644 | && (off & (maxpagesize - 1)) != 0 | |
502794d4 CE |
5645 | && ((off & -maxpagesize) |
5646 | == ((off + off_adjust) & -maxpagesize))) | |
a8c75b76 | 5647 | off_adjust += maxpagesize; |
bf988460 AM |
5648 | off += off_adjust; |
5649 | if (no_contents) | |
5650 | { | |
5651 | /* We shouldn't need to align the segment on disk since | |
5652 | the segment doesn't need file space, but the gABI | |
5653 | arguably requires the alignment and glibc ld.so | |
5654 | checks it. So to comply with the alignment | |
5655 | requirement but not waste file space, we adjust | |
5656 | p_offset for just this segment. (OFF_ADJUST is | |
5657 | subtracted from OFF later.) This may put p_offset | |
5658 | past the end of file, but that shouldn't matter. */ | |
5659 | } | |
5660 | else | |
5661 | off_adjust = 0; | |
252b5132 | 5662 | } |
b1a6d0b1 NC |
5663 | /* Make sure the .dynamic section is the first section in the |
5664 | PT_DYNAMIC segment. */ | |
5665 | else if (p->p_type == PT_DYNAMIC | |
5666 | && m->count > 1 | |
5667 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
5668 | { | |
5669 | _bfd_error_handler | |
871b3ab2 | 5670 | (_("%pB: The first section in the PT_DYNAMIC segment" |
63a5468a | 5671 | " is not the .dynamic section"), |
b301b248 | 5672 | abfd); |
b1a6d0b1 | 5673 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 5674 | return false; |
b1a6d0b1 | 5675 | } |
3f001e84 JK |
5676 | /* Set the note section type to SHT_NOTE. */ |
5677 | else if (p->p_type == PT_NOTE) | |
5678 | for (i = 0; i < m->count; i++) | |
5679 | elf_section_type (m->sections[i]) = SHT_NOTE; | |
252b5132 | 5680 | |
252b5132 RH |
5681 | if (m->includes_filehdr) |
5682 | { | |
bf988460 | 5683 | if (!m->p_flags_valid) |
252b5132 | 5684 | p->p_flags |= PF_R; |
252b5132 RH |
5685 | p->p_filesz = bed->s->sizeof_ehdr; |
5686 | p->p_memsz = bed->s->sizeof_ehdr; | |
30fe1832 | 5687 | if (p->p_type == PT_LOAD) |
252b5132 | 5688 | { |
30fe1832 | 5689 | if (m->count > 0) |
252b5132 | 5690 | { |
30fe1832 AM |
5691 | if (p->p_vaddr < (bfd_vma) off |
5692 | || (!m->p_paddr_valid | |
5693 | && p->p_paddr < (bfd_vma) off)) | |
5694 | { | |
5695 | _bfd_error_handler | |
5696 | (_("%pB: not enough room for program headers," | |
5697 | " try linking with -N"), | |
5698 | abfd); | |
5699 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 5700 | return false; |
30fe1832 AM |
5701 | } |
5702 | p->p_vaddr -= off; | |
5703 | if (!m->p_paddr_valid) | |
5704 | p->p_paddr -= off; | |
252b5132 | 5705 | } |
30fe1832 AM |
5706 | } |
5707 | else if (sorted_seg_map[0]->includes_filehdr) | |
5708 | { | |
5709 | Elf_Internal_Phdr *filehdr = phdrs + sorted_seg_map[0]->idx; | |
5710 | p->p_vaddr = filehdr->p_vaddr; | |
bf988460 | 5711 | if (!m->p_paddr_valid) |
30fe1832 | 5712 | p->p_paddr = filehdr->p_paddr; |
252b5132 | 5713 | } |
252b5132 RH |
5714 | } |
5715 | ||
5716 | if (m->includes_phdrs) | |
5717 | { | |
bf988460 | 5718 | if (!m->p_flags_valid) |
252b5132 | 5719 | p->p_flags |= PF_R; |
30fe1832 AM |
5720 | p->p_filesz += actual * bed->s->sizeof_phdr; |
5721 | p->p_memsz += actual * bed->s->sizeof_phdr; | |
f3520d2f | 5722 | if (!m->includes_filehdr) |
252b5132 | 5723 | { |
30fe1832 | 5724 | if (p->p_type == PT_LOAD) |
252b5132 | 5725 | { |
30fe1832 AM |
5726 | elf_elfheader (abfd)->e_phoff = p->p_offset; |
5727 | if (m->count > 0) | |
5728 | { | |
5729 | p->p_vaddr -= off - p->p_offset; | |
5730 | if (!m->p_paddr_valid) | |
5731 | p->p_paddr -= off - p->p_offset; | |
5732 | } | |
5733 | } | |
5734 | else if (phdr_load_seg != NULL) | |
5735 | { | |
5736 | Elf_Internal_Phdr *phdr = phdrs + phdr_load_seg->idx; | |
502794d4 | 5737 | bfd_vma phdr_off = 0; /* Octets. */ |
30fe1832 AM |
5738 | if (phdr_load_seg->includes_filehdr) |
5739 | phdr_off = bed->s->sizeof_ehdr; | |
5740 | p->p_vaddr = phdr->p_vaddr + phdr_off; | |
bf988460 | 5741 | if (!m->p_paddr_valid) |
30fe1832 AM |
5742 | p->p_paddr = phdr->p_paddr + phdr_off; |
5743 | p->p_offset = phdr->p_offset + phdr_off; | |
252b5132 | 5744 | } |
30fe1832 AM |
5745 | else |
5746 | p->p_offset = bed->s->sizeof_ehdr; | |
2b0bc088 | 5747 | } |
252b5132 RH |
5748 | } |
5749 | ||
5750 | if (p->p_type == PT_LOAD | |
5751 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
5752 | { | |
bf988460 | 5753 | if (!m->includes_filehdr && !m->includes_phdrs) |
0bc3450e AM |
5754 | { |
5755 | p->p_offset = off; | |
5756 | if (no_contents) | |
67641dd3 AM |
5757 | { |
5758 | /* Put meaningless p_offset for PT_LOAD segments | |
5759 | without file contents somewhere within the first | |
5760 | page, in an attempt to not point past EOF. */ | |
5761 | bfd_size_type align = maxpagesize; | |
5762 | if (align < p->p_align) | |
5763 | align = p->p_align; | |
5764 | if (align < 1) | |
5765 | align = 1; | |
5766 | p->p_offset = off % align; | |
5767 | } | |
0bc3450e | 5768 | } |
252b5132 RH |
5769 | else |
5770 | { | |
502794d4 | 5771 | file_ptr adjust; /* Octets. */ |
252b5132 RH |
5772 | |
5773 | adjust = off - (p->p_offset + p->p_filesz); | |
bf988460 AM |
5774 | if (!no_contents) |
5775 | p->p_filesz += adjust; | |
252b5132 RH |
5776 | p->p_memsz += adjust; |
5777 | } | |
5778 | } | |
5779 | ||
1ea63fd2 AM |
5780 | /* Set up p_filesz, p_memsz, p_align and p_flags from the section |
5781 | maps. Set filepos for sections in PT_LOAD segments, and in | |
5782 | core files, for sections in PT_NOTE segments. | |
5783 | assign_file_positions_for_non_load_sections will set filepos | |
5784 | for other sections and update p_filesz for other segments. */ | |
252b5132 RH |
5785 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
5786 | { | |
5787 | asection *sec; | |
252b5132 | 5788 | bfd_size_type align; |
627b32bc | 5789 | Elf_Internal_Shdr *this_hdr; |
252b5132 RH |
5790 | |
5791 | sec = *secpp; | |
02bf8d82 | 5792 | this_hdr = &elf_section_data (sec)->this_hdr; |
fd361982 | 5793 | align = (bfd_size_type) 1 << bfd_section_alignment (sec); |
252b5132 | 5794 | |
88967714 AM |
5795 | if ((p->p_type == PT_LOAD |
5796 | || p->p_type == PT_TLS) | |
5797 | && (this_hdr->sh_type != SHT_NOBITS | |
5798 | || ((this_hdr->sh_flags & SHF_ALLOC) != 0 | |
5799 | && ((this_hdr->sh_flags & SHF_TLS) == 0 | |
5800 | || p->p_type == PT_TLS)))) | |
252b5132 | 5801 | { |
502794d4 CE |
5802 | bfd_vma p_start = p->p_paddr; /* Octets. */ |
5803 | bfd_vma p_end = p_start + p->p_memsz; /* Octets. */ | |
5804 | bfd_vma s_start = sec->lma * opb; /* Octets. */ | |
5805 | bfd_vma adjust = s_start - p_end; /* Octets. */ | |
252b5132 | 5806 | |
a2d1e028 L |
5807 | if (adjust != 0 |
5808 | && (s_start < p_end | |
5809 | || p_end < p_start)) | |
252b5132 | 5810 | { |
4eca0228 | 5811 | _bfd_error_handler |
695344c0 | 5812 | /* xgettext:c-format */ |
2dcf00ce | 5813 | (_("%pB: section %pA lma %#" PRIx64 " adjusted to %#" PRIx64), |
502794d4 CE |
5814 | abfd, sec, (uint64_t) s_start / opb, |
5815 | (uint64_t) p_end / opb); | |
88967714 | 5816 | adjust = 0; |
502794d4 | 5817 | sec->lma = p_end / opb; |
1cfb7d1e | 5818 | } |
3ac9b6c9 | 5819 | p->p_memsz += adjust; |
1cfb7d1e | 5820 | |
d16e3d2e | 5821 | if (p->p_type == PT_LOAD) |
88967714 | 5822 | { |
d16e3d2e | 5823 | if (this_hdr->sh_type != SHT_NOBITS) |
32812159 | 5824 | { |
d16e3d2e | 5825 | off_adjust = 0; |
30fe1832 AM |
5826 | if (p->p_filesz + adjust < p->p_memsz) |
5827 | { | |
5828 | /* We have a PROGBITS section following NOBITS ones. | |
5829 | Allocate file space for the NOBITS section(s) and | |
5830 | zero it. */ | |
5831 | adjust = p->p_memsz - p->p_filesz; | |
5832 | if (!write_zeros (abfd, off, adjust)) | |
0a1b45a2 | 5833 | return false; |
30fe1832 | 5834 | } |
d16e3d2e AM |
5835 | } |
5836 | /* We only adjust sh_offset in SHT_NOBITS sections | |
5837 | as would seem proper for their address when the | |
5838 | section is first in the segment. sh_offset | |
5839 | doesn't really have any significance for | |
5840 | SHT_NOBITS anyway, apart from a notional position | |
5841 | relative to other sections. Historically we | |
5842 | didn't bother with adjusting sh_offset and some | |
5843 | programs depend on it not being adjusted. See | |
5844 | pr12921 and pr25662. */ | |
5845 | if (this_hdr->sh_type != SHT_NOBITS || i == 0) | |
5846 | { | |
30fe1832 | 5847 | off += adjust; |
d16e3d2e AM |
5848 | if (this_hdr->sh_type == SHT_NOBITS) |
5849 | off_adjust += adjust; | |
32812159 | 5850 | } |
252b5132 | 5851 | } |
d16e3d2e AM |
5852 | if (this_hdr->sh_type != SHT_NOBITS) |
5853 | p->p_filesz += adjust; | |
252b5132 RH |
5854 | } |
5855 | ||
5856 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
5857 | { | |
b301b248 AM |
5858 | /* The section at i == 0 is the one that actually contains |
5859 | everything. */ | |
4a938328 MS |
5860 | if (i == 0) |
5861 | { | |
627b32bc | 5862 | this_hdr->sh_offset = sec->filepos = off; |
6a3cd2b4 AM |
5863 | off += this_hdr->sh_size; |
5864 | p->p_filesz = this_hdr->sh_size; | |
b301b248 AM |
5865 | p->p_memsz = 0; |
5866 | p->p_align = 1; | |
252b5132 | 5867 | } |
4a938328 | 5868 | else |
252b5132 | 5869 | { |
b301b248 | 5870 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 5871 | sec->filepos = 0; |
eea6121a | 5872 | sec->size = 0; |
b301b248 AM |
5873 | sec->flags = 0; |
5874 | continue; | |
252b5132 | 5875 | } |
252b5132 RH |
5876 | } |
5877 | else | |
5878 | { | |
1e951488 | 5879 | if (p->p_type == PT_LOAD) |
b301b248 | 5880 | { |
1e951488 AM |
5881 | this_hdr->sh_offset = sec->filepos = off; |
5882 | if (this_hdr->sh_type != SHT_NOBITS) | |
5883 | off += this_hdr->sh_size; | |
5884 | } | |
5885 | else if (this_hdr->sh_type == SHT_NOBITS | |
5886 | && (this_hdr->sh_flags & SHF_TLS) != 0 | |
5887 | && this_hdr->sh_offset == 0) | |
5888 | { | |
5889 | /* This is a .tbss section that didn't get a PT_LOAD. | |
5890 | (See _bfd_elf_map_sections_to_segments "Create a | |
5891 | final PT_LOAD".) Set sh_offset to the value it | |
5892 | would have if we had created a zero p_filesz and | |
5893 | p_memsz PT_LOAD header for the section. This | |
5894 | also makes the PT_TLS header have the same | |
5895 | p_offset value. */ | |
5896 | bfd_vma adjust = vma_page_aligned_bias (this_hdr->sh_addr, | |
5897 | off, align); | |
5898 | this_hdr->sh_offset = sec->filepos = off + adjust; | |
b301b248 | 5899 | } |
252b5132 | 5900 | |
02bf8d82 | 5901 | if (this_hdr->sh_type != SHT_NOBITS) |
b301b248 | 5902 | { |
6a3cd2b4 | 5903 | p->p_filesz += this_hdr->sh_size; |
02bf8d82 AM |
5904 | /* A load section without SHF_ALLOC is something like |
5905 | a note section in a PT_NOTE segment. These take | |
5906 | file space but are not loaded into memory. */ | |
5907 | if ((this_hdr->sh_flags & SHF_ALLOC) != 0) | |
6a3cd2b4 | 5908 | p->p_memsz += this_hdr->sh_size; |
b301b248 | 5909 | } |
6a3cd2b4 | 5910 | else if ((this_hdr->sh_flags & SHF_ALLOC) != 0) |
13ae64f3 | 5911 | { |
6a3cd2b4 AM |
5912 | if (p->p_type == PT_TLS) |
5913 | p->p_memsz += this_hdr->sh_size; | |
5914 | ||
5915 | /* .tbss is special. It doesn't contribute to p_memsz of | |
5916 | normal segments. */ | |
5917 | else if ((this_hdr->sh_flags & SHF_TLS) == 0) | |
5918 | p->p_memsz += this_hdr->sh_size; | |
13ae64f3 JJ |
5919 | } |
5920 | ||
b10a8ae0 L |
5921 | if (align > p->p_align |
5922 | && !m->p_align_valid | |
5923 | && (p->p_type != PT_LOAD | |
5924 | || (abfd->flags & D_PAGED) == 0)) | |
252b5132 RH |
5925 | p->p_align = align; |
5926 | } | |
5927 | ||
bf988460 | 5928 | if (!m->p_flags_valid) |
252b5132 RH |
5929 | { |
5930 | p->p_flags |= PF_R; | |
02bf8d82 | 5931 | if ((this_hdr->sh_flags & SHF_EXECINSTR) != 0) |
252b5132 | 5932 | p->p_flags |= PF_X; |
02bf8d82 | 5933 | if ((this_hdr->sh_flags & SHF_WRITE) != 0) |
252b5132 RH |
5934 | p->p_flags |= PF_W; |
5935 | } | |
5936 | } | |
43a8475c | 5937 | |
bf988460 | 5938 | off -= off_adjust; |
0920dee7 | 5939 | |
30fe1832 AM |
5940 | /* PR ld/20815 - Check that the program header segment, if |
5941 | present, will be loaded into memory. */ | |
5942 | if (p->p_type == PT_PHDR | |
5943 | && phdr_load_seg == NULL | |
5944 | && !(bed->elf_backend_allow_non_load_phdr != NULL | |
5945 | && bed->elf_backend_allow_non_load_phdr (abfd, phdrs, alloc))) | |
5946 | { | |
5947 | /* The fix for this error is usually to edit the linker script being | |
5948 | used and set up the program headers manually. Either that or | |
5949 | leave room for the headers at the start of the SECTIONS. */ | |
5950 | _bfd_error_handler (_("%pB: error: PHDR segment not covered" | |
5951 | " by LOAD segment"), | |
5952 | abfd); | |
7b3c2715 | 5953 | if (link_info == NULL) |
0a1b45a2 | 5954 | return false; |
7b3c2715 AM |
5955 | /* Arrange for the linker to exit with an error, deleting |
5956 | the output file unless --noinhibit-exec is given. */ | |
5957 | link_info->callbacks->info ("%X"); | |
30fe1832 AM |
5958 | } |
5959 | ||
7c928300 AM |
5960 | /* Check that all sections are in a PT_LOAD segment. |
5961 | Don't check funky gdb generated core files. */ | |
5962 | if (p->p_type == PT_LOAD && bfd_get_format (abfd) != bfd_core) | |
9a83a553 | 5963 | { |
0a1b45a2 | 5964 | bool check_vma = true; |
9a83a553 AM |
5965 | |
5966 | for (i = 1; i < m->count; i++) | |
5967 | if (m->sections[i]->vma == m->sections[i - 1]->vma | |
5968 | && ELF_SECTION_SIZE (&(elf_section_data (m->sections[i]) | |
5969 | ->this_hdr), p) != 0 | |
5970 | && ELF_SECTION_SIZE (&(elf_section_data (m->sections[i - 1]) | |
5971 | ->this_hdr), p) != 0) | |
0920dee7 | 5972 | { |
9a83a553 | 5973 | /* Looks like we have overlays packed into the segment. */ |
0a1b45a2 | 5974 | check_vma = false; |
9a83a553 | 5975 | break; |
0920dee7 | 5976 | } |
9a83a553 AM |
5977 | |
5978 | for (i = 0; i < m->count; i++) | |
5979 | { | |
5980 | Elf_Internal_Shdr *this_hdr; | |
5981 | asection *sec; | |
5982 | ||
5983 | sec = m->sections[i]; | |
5984 | this_hdr = &(elf_section_data(sec)->this_hdr); | |
86b2281f AM |
5985 | if (!ELF_SECTION_IN_SEGMENT_1 (this_hdr, p, check_vma, 0) |
5986 | && !ELF_TBSS_SPECIAL (this_hdr, p)) | |
9a83a553 | 5987 | { |
4eca0228 | 5988 | _bfd_error_handler |
695344c0 | 5989 | /* xgettext:c-format */ |
871b3ab2 | 5990 | (_("%pB: section `%pA' can't be allocated in segment %d"), |
9a83a553 AM |
5991 | abfd, sec, j); |
5992 | print_segment_map (m); | |
5993 | } | |
5994 | } | |
5995 | } | |
252b5132 RH |
5996 | } |
5997 | ||
12bd6957 | 5998 | elf_next_file_pos (abfd) = off; |
30fe1832 AM |
5999 | |
6000 | if (link_info != NULL | |
6001 | && phdr_load_seg != NULL | |
6002 | && phdr_load_seg->includes_filehdr) | |
6003 | { | |
6004 | /* There is a segment that contains both the file headers and the | |
6005 | program headers, so provide a symbol __ehdr_start pointing there. | |
6006 | A program can use this to examine itself robustly. */ | |
6007 | ||
6008 | struct elf_link_hash_entry *hash | |
6009 | = elf_link_hash_lookup (elf_hash_table (link_info), "__ehdr_start", | |
0a1b45a2 | 6010 | false, false, true); |
30fe1832 AM |
6011 | /* If the symbol was referenced and not defined, define it. */ |
6012 | if (hash != NULL | |
6013 | && (hash->root.type == bfd_link_hash_new | |
6014 | || hash->root.type == bfd_link_hash_undefined | |
6015 | || hash->root.type == bfd_link_hash_undefweak | |
6016 | || hash->root.type == bfd_link_hash_common)) | |
6017 | { | |
6018 | asection *s = NULL; | |
66631823 | 6019 | bfd_vma filehdr_vaddr = phdrs[phdr_load_seg->idx].p_vaddr / opb; |
30fe1832 AM |
6020 | |
6021 | if (phdr_load_seg->count != 0) | |
6022 | /* The segment contains sections, so use the first one. */ | |
6023 | s = phdr_load_seg->sections[0]; | |
6024 | else | |
6025 | /* Use the first (i.e. lowest-addressed) section in any segment. */ | |
6026 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) | |
6027 | if (m->p_type == PT_LOAD && m->count != 0) | |
6028 | { | |
6029 | s = m->sections[0]; | |
6030 | break; | |
6031 | } | |
6032 | ||
6033 | if (s != NULL) | |
6034 | { | |
6035 | hash->root.u.def.value = filehdr_vaddr - s->vma; | |
6036 | hash->root.u.def.section = s; | |
6037 | } | |
6038 | else | |
6039 | { | |
6040 | hash->root.u.def.value = filehdr_vaddr; | |
6041 | hash->root.u.def.section = bfd_abs_section_ptr; | |
6042 | } | |
6043 | ||
6044 | hash->root.type = bfd_link_hash_defined; | |
6045 | hash->def_regular = 1; | |
6046 | hash->non_elf = 0; | |
6047 | } | |
6048 | } | |
6049 | ||
0a1b45a2 | 6050 | return true; |
f3520d2f AM |
6051 | } |
6052 | ||
1faa385f NC |
6053 | /* Determine if a bfd is a debuginfo file. Unfortunately there |
6054 | is no defined method for detecting such files, so we have to | |
6055 | use heuristics instead. */ | |
6056 | ||
0a1b45a2 | 6057 | bool |
1faa385f NC |
6058 | is_debuginfo_file (bfd *abfd) |
6059 | { | |
6060 | if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_elf_flavour) | |
0a1b45a2 | 6061 | return false; |
1faa385f NC |
6062 | |
6063 | Elf_Internal_Shdr **start_headers = elf_elfsections (abfd); | |
6064 | Elf_Internal_Shdr **end_headers = start_headers + elf_numsections (abfd); | |
6065 | Elf_Internal_Shdr **headerp; | |
6066 | ||
6067 | for (headerp = start_headers; headerp < end_headers; headerp ++) | |
6068 | { | |
6069 | Elf_Internal_Shdr *header = * headerp; | |
6070 | ||
6071 | /* Debuginfo files do not have any allocated SHT_PROGBITS sections. | |
6072 | The only allocated sections are SHT_NOBITS or SHT_NOTES. */ | |
6073 | if ((header->sh_flags & SHF_ALLOC) == SHF_ALLOC | |
6074 | && header->sh_type != SHT_NOBITS | |
6075 | && header->sh_type != SHT_NOTE) | |
0a1b45a2 | 6076 | return false; |
1faa385f NC |
6077 | } |
6078 | ||
0a1b45a2 | 6079 | return true; |
1faa385f NC |
6080 | } |
6081 | ||
1ff6de03 NA |
6082 | /* Assign file positions for the other sections, except for compressed debugging |
6083 | and other sections assigned in _bfd_elf_assign_file_positions_for_non_load(). */ | |
f3520d2f | 6084 | |
0a1b45a2 | 6085 | static bool |
f3520d2f AM |
6086 | assign_file_positions_for_non_load_sections (bfd *abfd, |
6087 | struct bfd_link_info *link_info) | |
6088 | { | |
6089 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
6090 | Elf_Internal_Shdr **i_shdrpp; | |
e06efbf1 | 6091 | Elf_Internal_Shdr **hdrpp, **end_hdrpp; |
f3520d2f AM |
6092 | Elf_Internal_Phdr *phdrs; |
6093 | Elf_Internal_Phdr *p; | |
6094 | struct elf_segment_map *m; | |
f3520d2f | 6095 | file_ptr off; |
66631823 | 6096 | unsigned int opb = bfd_octets_per_byte (abfd, NULL); |
c410035d | 6097 | bfd_vma maxpagesize; |
f3520d2f | 6098 | |
c410035d AM |
6099 | if (link_info != NULL) |
6100 | maxpagesize = link_info->maxpagesize; | |
6101 | else | |
6102 | maxpagesize = bed->maxpagesize; | |
5c182d5f | 6103 | i_shdrpp = elf_elfsections (abfd); |
e06efbf1 | 6104 | end_hdrpp = i_shdrpp + elf_numsections (abfd); |
12bd6957 | 6105 | off = elf_next_file_pos (abfd); |
e06efbf1 | 6106 | for (hdrpp = i_shdrpp + 1; hdrpp < end_hdrpp; hdrpp++) |
5c182d5f | 6107 | { |
5c182d5f AM |
6108 | Elf_Internal_Shdr *hdr; |
6109 | ||
6110 | hdr = *hdrpp; | |
6111 | if (hdr->bfd_section != NULL | |
252e386e AM |
6112 | && (hdr->bfd_section->filepos != 0 |
6113 | || (hdr->sh_type == SHT_NOBITS | |
6114 | && hdr->contents == NULL))) | |
627b32bc | 6115 | BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos); |
5c182d5f AM |
6116 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) |
6117 | { | |
1faa385f NC |
6118 | if (hdr->sh_size != 0 |
6119 | /* PR 24717 - debuginfo files are known to be not strictly | |
6120 | compliant with the ELF standard. In particular they often | |
6121 | have .note.gnu.property sections that are outside of any | |
6122 | loadable segment. This is not a problem for such files, | |
6123 | so do not warn about them. */ | |
6124 | && ! is_debuginfo_file (abfd)) | |
4eca0228 | 6125 | _bfd_error_handler |
695344c0 | 6126 | /* xgettext:c-format */ |
871b3ab2 | 6127 | (_("%pB: warning: allocated section `%s' not in segment"), |
e8d2ba53 AM |
6128 | abfd, |
6129 | (hdr->bfd_section == NULL | |
6130 | ? "*unknown*" | |
6131 | : hdr->bfd_section->name)); | |
3ba71138 L |
6132 | /* We don't need to page align empty sections. */ |
6133 | if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0) | |
5c182d5f | 6134 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
c410035d | 6135 | maxpagesize); |
5c182d5f AM |
6136 | else |
6137 | off += vma_page_aligned_bias (hdr->sh_addr, off, | |
6138 | hdr->sh_addralign); | |
6139 | off = _bfd_elf_assign_file_position_for_section (hdr, off, | |
0a1b45a2 | 6140 | false); |
5c182d5f AM |
6141 | } |
6142 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) | |
6143 | && hdr->bfd_section == NULL) | |
1ff6de03 NA |
6144 | /* We don't know the offset of these sections yet: their size has |
6145 | not been decided. */ | |
0ce398f1 | 6146 | || (hdr->bfd_section != NULL |
1ff6de03 NA |
6147 | && (hdr->bfd_section->flags & SEC_ELF_COMPRESS |
6148 | || (bfd_section_is_ctf (hdr->bfd_section) | |
6149 | && abfd->is_linker_output))) | |
12bd6957 | 6150 | || hdr == i_shdrpp[elf_onesymtab (abfd)] |
6a40cf0c NC |
6151 | || (elf_symtab_shndx_list (abfd) != NULL |
6152 | && hdr == i_shdrpp[elf_symtab_shndx_list (abfd)->ndx]) | |
3e19fb8f L |
6153 | || hdr == i_shdrpp[elf_strtab_sec (abfd)] |
6154 | || hdr == i_shdrpp[elf_shstrtab_sec (abfd)]) | |
5c182d5f AM |
6155 | hdr->sh_offset = -1; |
6156 | else | |
0a1b45a2 | 6157 | off = _bfd_elf_assign_file_position_for_section (hdr, off, true); |
5c182d5f | 6158 | } |
30fe1832 | 6159 | elf_next_file_pos (abfd) = off; |
5c182d5f | 6160 | |
252b5132 RH |
6161 | /* Now that we have set the section file positions, we can set up |
6162 | the file positions for the non PT_LOAD segments. */ | |
f3520d2f | 6163 | phdrs = elf_tdata (abfd)->phdr; |
12bd6957 | 6164 | for (m = elf_seg_map (abfd), p = phdrs; m != NULL; m = m->next, p++) |
252b5132 | 6165 | { |
129af99f | 6166 | if (p->p_type == PT_GNU_RELRO) |
252b5132 | 6167 | { |
66631823 | 6168 | bfd_vma start, end; /* Bytes. */ |
0a1b45a2 | 6169 | bool ok; |
1ea63fd2 | 6170 | |
129af99f | 6171 | if (link_info != NULL) |
8c37241b | 6172 | { |
129af99f | 6173 | /* During linking the range of the RELRO segment is passed |
f2731e0c AM |
6174 | in link_info. Note that there may be padding between |
6175 | relro_start and the first RELRO section. */ | |
6176 | start = link_info->relro_start; | |
6177 | end = link_info->relro_end; | |
6178 | } | |
6179 | else if (m->count != 0) | |
6180 | { | |
6181 | if (!m->p_size_valid) | |
6182 | abort (); | |
6183 | start = m->sections[0]->vma; | |
66631823 | 6184 | end = start + m->p_size / opb; |
f2731e0c AM |
6185 | } |
6186 | else | |
6187 | { | |
6188 | start = 0; | |
6189 | end = 0; | |
6190 | } | |
6191 | ||
0a1b45a2 | 6192 | ok = false; |
f2731e0c AM |
6193 | if (start < end) |
6194 | { | |
6195 | struct elf_segment_map *lm; | |
6196 | const Elf_Internal_Phdr *lp; | |
6197 | unsigned int i; | |
6198 | ||
6199 | /* Find a LOAD segment containing a section in the RELRO | |
6200 | segment. */ | |
12bd6957 | 6201 | for (lm = elf_seg_map (abfd), lp = phdrs; |
3146fac4 AM |
6202 | lm != NULL; |
6203 | lm = lm->next, lp++) | |
8c37241b JJ |
6204 | { |
6205 | if (lp->p_type == PT_LOAD | |
3146fac4 | 6206 | && lm->count != 0 |
dbc88fc1 AM |
6207 | && (lm->sections[lm->count - 1]->vma |
6208 | + (!IS_TBSS (lm->sections[lm->count - 1]) | |
66631823 | 6209 | ? lm->sections[lm->count - 1]->size / opb |
dbc88fc1 | 6210 | : 0)) > start |
f2731e0c | 6211 | && lm->sections[0]->vma < end) |
8c37241b JJ |
6212 | break; |
6213 | } | |
f2731e0c | 6214 | |
01f7e10c | 6215 | if (lm != NULL) |
129af99f | 6216 | { |
01f7e10c AM |
6217 | /* Find the section starting the RELRO segment. */ |
6218 | for (i = 0; i < lm->count; i++) | |
6219 | { | |
6220 | asection *s = lm->sections[i]; | |
6221 | if (s->vma >= start | |
6222 | && s->vma < end | |
6223 | && s->size != 0) | |
6224 | break; | |
6225 | } | |
6226 | ||
6227 | if (i < lm->count) | |
6228 | { | |
502794d4 CE |
6229 | p->p_vaddr = lm->sections[i]->vma * opb; |
6230 | p->p_paddr = lm->sections[i]->lma * opb; | |
01f7e10c | 6231 | p->p_offset = lm->sections[i]->filepos; |
66631823 | 6232 | p->p_memsz = end * opb - p->p_vaddr; |
01f7e10c AM |
6233 | p->p_filesz = p->p_memsz; |
6234 | ||
6235 | /* The RELRO segment typically ends a few bytes | |
6236 | into .got.plt but other layouts are possible. | |
6237 | In cases where the end does not match any | |
6238 | loaded section (for instance is in file | |
6239 | padding), trim p_filesz back to correspond to | |
6240 | the end of loaded section contents. */ | |
6241 | if (p->p_filesz > lp->p_vaddr + lp->p_filesz - p->p_vaddr) | |
6242 | p->p_filesz = lp->p_vaddr + lp->p_filesz - p->p_vaddr; | |
6243 | ||
6244 | /* Preserve the alignment and flags if they are | |
6245 | valid. The gold linker generates RW/4 for | |
6246 | the PT_GNU_RELRO section. It is better for | |
6247 | objcopy/strip to honor these attributes | |
6248 | otherwise gdb will choke when using separate | |
6249 | debug files. */ | |
6250 | if (!m->p_align_valid) | |
6251 | p->p_align = 1; | |
6252 | if (!m->p_flags_valid) | |
6253 | p->p_flags = PF_R; | |
0a1b45a2 | 6254 | ok = true; |
01f7e10c | 6255 | } |
129af99f | 6256 | } |
b84a33b5 | 6257 | } |
01f7e10c AM |
6258 | if (link_info != NULL) |
6259 | BFD_ASSERT (ok); | |
6260 | if (!ok) | |
6261 | memset (p, 0, sizeof *p); | |
129af99f | 6262 | } |
04c3a755 NS |
6263 | else if (p->p_type == PT_GNU_STACK) |
6264 | { | |
6265 | if (m->p_size_valid) | |
6266 | p->p_memsz = m->p_size; | |
6267 | } | |
129af99f AS |
6268 | else if (m->count != 0) |
6269 | { | |
e06efbf1 | 6270 | unsigned int i; |
1a9ccd70 | 6271 | |
129af99f AS |
6272 | if (p->p_type != PT_LOAD |
6273 | && (p->p_type != PT_NOTE | |
6274 | || bfd_get_format (abfd) != bfd_core)) | |
6275 | { | |
1a9ccd70 NC |
6276 | /* A user specified segment layout may include a PHDR |
6277 | segment that overlaps with a LOAD segment... */ | |
6278 | if (p->p_type == PT_PHDR) | |
6279 | { | |
6280 | m->count = 0; | |
6281 | continue; | |
6282 | } | |
6283 | ||
c86934ce NC |
6284 | if (m->includes_filehdr || m->includes_phdrs) |
6285 | { | |
b1fa9dd6 | 6286 | /* PR 17512: file: 2195325e. */ |
4eca0228 | 6287 | _bfd_error_handler |
871b3ab2 | 6288 | (_("%pB: error: non-load segment %d includes file header " |
76cfced5 AM |
6289 | "and/or program header"), |
6290 | abfd, (int) (p - phdrs)); | |
0a1b45a2 | 6291 | return false; |
c86934ce | 6292 | } |
129af99f | 6293 | |
86b2281f | 6294 | p->p_filesz = 0; |
129af99f | 6295 | p->p_offset = m->sections[0]->filepos; |
86b2281f AM |
6296 | for (i = m->count; i-- != 0;) |
6297 | { | |
6298 | asection *sect = m->sections[i]; | |
6299 | Elf_Internal_Shdr *hdr = &elf_section_data (sect)->this_hdr; | |
6300 | if (hdr->sh_type != SHT_NOBITS) | |
6301 | { | |
6302 | p->p_filesz = (sect->filepos - m->sections[0]->filepos | |
6303 | + hdr->sh_size); | |
9917b559 L |
6304 | /* NB: p_memsz of the loadable PT_NOTE segment |
6305 | should be the same as p_filesz. */ | |
6306 | if (p->p_type == PT_NOTE | |
6307 | && (hdr->sh_flags & SHF_ALLOC) != 0) | |
6308 | p->p_memsz = p->p_filesz; | |
86b2281f AM |
6309 | break; |
6310 | } | |
6311 | } | |
129af99f AS |
6312 | } |
6313 | } | |
252b5132 RH |
6314 | } |
6315 | ||
0a1b45a2 | 6316 | return true; |
252b5132 RH |
6317 | } |
6318 | ||
6a40cf0c NC |
6319 | static elf_section_list * |
6320 | find_section_in_list (unsigned int i, elf_section_list * list) | |
6321 | { | |
6322 | for (;list != NULL; list = list->next) | |
6323 | if (list->ndx == i) | |
6324 | break; | |
6325 | return list; | |
6326 | } | |
6327 | ||
252b5132 RH |
6328 | /* Work out the file positions of all the sections. This is called by |
6329 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
6330 | VMAs must be known before this is called. | |
6331 | ||
e0638f70 | 6332 | Reloc sections come in two flavours: Those processed specially as |
1ff6de03 NA |
6333 | "side-channel" data attached to a section to which they apply, and those that |
6334 | bfd doesn't process as relocations. The latter sort are stored in a normal | |
6335 | bfd section by bfd_section_from_shdr. We don't consider the former sort | |
6336 | here, unless they form part of the loadable image. Reloc sections not | |
6337 | assigned here (and compressed debugging sections and CTF sections which | |
6338 | nothing else in the file can rely upon) will be handled later by | |
e0638f70 | 6339 | assign_file_positions_for_relocs. |
252b5132 RH |
6340 | |
6341 | We also don't set the positions of the .symtab and .strtab here. */ | |
6342 | ||
0a1b45a2 | 6343 | static bool |
c84fca4d AO |
6344 | assign_file_positions_except_relocs (bfd *abfd, |
6345 | struct bfd_link_info *link_info) | |
252b5132 | 6346 | { |
5c182d5f AM |
6347 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
6348 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
9c5bfbb7 | 6349 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
6d6c25c8 | 6350 | unsigned int alloc; |
252b5132 RH |
6351 | |
6352 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
6353 | && bfd_get_format (abfd) != bfd_core) | |
6354 | { | |
5c182d5f AM |
6355 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); |
6356 | unsigned int num_sec = elf_numsections (abfd); | |
252b5132 RH |
6357 | Elf_Internal_Shdr **hdrpp; |
6358 | unsigned int i; | |
a485e98e | 6359 | file_ptr off; |
252b5132 RH |
6360 | |
6361 | /* Start after the ELF header. */ | |
6362 | off = i_ehdrp->e_ehsize; | |
6363 | ||
6364 | /* We are not creating an executable, which means that we are | |
6365 | not creating a program header, and that the actual order of | |
6366 | the sections in the file is unimportant. */ | |
9ad5cbcf | 6367 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
6368 | { |
6369 | Elf_Internal_Shdr *hdr; | |
6370 | ||
6371 | hdr = *hdrpp; | |
e0638f70 AM |
6372 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
6373 | && hdr->bfd_section == NULL) | |
1ff6de03 NA |
6374 | /* Do not assign offsets for these sections yet: we don't know |
6375 | their sizes. */ | |
0ce398f1 | 6376 | || (hdr->bfd_section != NULL |
1ff6de03 NA |
6377 | && (hdr->bfd_section->flags & SEC_ELF_COMPRESS |
6378 | || (bfd_section_is_ctf (hdr->bfd_section) | |
6379 | && abfd->is_linker_output))) | |
12bd6957 | 6380 | || i == elf_onesymtab (abfd) |
6a40cf0c NC |
6381 | || (elf_symtab_shndx_list (abfd) != NULL |
6382 | && hdr == i_shdrpp[elf_symtab_shndx_list (abfd)->ndx]) | |
3e19fb8f L |
6383 | || i == elf_strtab_sec (abfd) |
6384 | || i == elf_shstrtab_sec (abfd)) | |
252b5132 RH |
6385 | { |
6386 | hdr->sh_offset = -1; | |
252b5132 | 6387 | } |
9ad5cbcf | 6388 | else |
0a1b45a2 | 6389 | off = _bfd_elf_assign_file_position_for_section (hdr, off, true); |
252b5132 | 6390 | } |
a485e98e AM |
6391 | |
6392 | elf_next_file_pos (abfd) = off; | |
6d6c25c8 | 6393 | elf_program_header_size (abfd) = 0; |
252b5132 RH |
6394 | } |
6395 | else | |
6396 | { | |
252b5132 | 6397 | /* Assign file positions for the loaded sections based on the |
08a40648 | 6398 | assignment of sections to segments. */ |
f3520d2f | 6399 | if (!assign_file_positions_for_load_sections (abfd, link_info)) |
0a1b45a2 | 6400 | return false; |
f3520d2f AM |
6401 | |
6402 | /* And for non-load sections. */ | |
6403 | if (!assign_file_positions_for_non_load_sections (abfd, link_info)) | |
0a1b45a2 | 6404 | return false; |
6d6c25c8 | 6405 | } |
f3520d2f | 6406 | |
6d6c25c8 | 6407 | if (!(*bed->elf_backend_modify_headers) (abfd, link_info)) |
0a1b45a2 | 6408 | return false; |
1a9ccd70 | 6409 | |
6d6c25c8 AM |
6410 | /* Write out the program headers. */ |
6411 | alloc = i_ehdrp->e_phnum; | |
6412 | if (alloc != 0) | |
6413 | { | |
30fe1832 | 6414 | if (bfd_seek (abfd, i_ehdrp->e_phoff, SEEK_SET) != 0 |
cd584857 | 6415 | || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0) |
0a1b45a2 | 6416 | return false; |
252b5132 RH |
6417 | } |
6418 | ||
0a1b45a2 | 6419 | return true; |
252b5132 RH |
6420 | } |
6421 | ||
0a1b45a2 | 6422 | bool |
ed7e9d0b AM |
6423 | _bfd_elf_init_file_header (bfd *abfd, |
6424 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
252b5132 | 6425 | { |
3d540e93 | 6426 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form. */ |
2b0f7ef9 | 6427 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 6428 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
6429 | |
6430 | i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 6431 | |
2b0f7ef9 | 6432 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 6433 | if (shstrtab == NULL) |
0a1b45a2 | 6434 | return false; |
252b5132 RH |
6435 | |
6436 | elf_shstrtab (abfd) = shstrtab; | |
6437 | ||
6438 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
6439 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
6440 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
6441 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
6442 | ||
6443 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
6444 | i_ehdrp->e_ident[EI_DATA] = | |
6445 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
6446 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
6447 | ||
252b5132 RH |
6448 | if ((abfd->flags & DYNAMIC) != 0) |
6449 | i_ehdrp->e_type = ET_DYN; | |
6450 | else if ((abfd->flags & EXEC_P) != 0) | |
6451 | i_ehdrp->e_type = ET_EXEC; | |
6452 | else if (bfd_get_format (abfd) == bfd_core) | |
6453 | i_ehdrp->e_type = ET_CORE; | |
6454 | else | |
6455 | i_ehdrp->e_type = ET_REL; | |
6456 | ||
6457 | switch (bfd_get_arch (abfd)) | |
6458 | { | |
6459 | case bfd_arch_unknown: | |
6460 | i_ehdrp->e_machine = EM_NONE; | |
6461 | break; | |
aa4f99bb AO |
6462 | |
6463 | /* There used to be a long list of cases here, each one setting | |
6464 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
6465 | in the corresponding bfd definition. To avoid duplication, | |
6466 | the switch was removed. Machines that need special handling | |
6467 | can generally do it in elf_backend_final_write_processing(), | |
6468 | unless they need the information earlier than the final write. | |
6469 | Such need can generally be supplied by replacing the tests for | |
6470 | e_machine with the conditions used to determine it. */ | |
252b5132 | 6471 | default: |
9c5bfbb7 AM |
6472 | i_ehdrp->e_machine = bed->elf_machine_code; |
6473 | } | |
aa4f99bb | 6474 | |
252b5132 RH |
6475 | i_ehdrp->e_version = bed->s->ev_current; |
6476 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
6477 | ||
c044fabd | 6478 | /* No program header, for now. */ |
252b5132 RH |
6479 | i_ehdrp->e_phoff = 0; |
6480 | i_ehdrp->e_phentsize = 0; | |
6481 | i_ehdrp->e_phnum = 0; | |
6482 | ||
c044fabd | 6483 | /* Each bfd section is section header entry. */ |
252b5132 RH |
6484 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
6485 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
6486 | ||
252b5132 | 6487 | elf_tdata (abfd)->symtab_hdr.sh_name = |
0a1b45a2 | 6488 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", false); |
252b5132 | 6489 | elf_tdata (abfd)->strtab_hdr.sh_name = |
0a1b45a2 | 6490 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", false); |
252b5132 | 6491 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
0a1b45a2 | 6492 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", false); |
252b5132 | 6493 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
17ca87fc | 6494 | || elf_tdata (abfd)->strtab_hdr.sh_name == (unsigned int) -1 |
252b5132 | 6495 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) |
0a1b45a2 | 6496 | return false; |
252b5132 | 6497 | |
0a1b45a2 | 6498 | return true; |
252b5132 RH |
6499 | } |
6500 | ||
6d6c25c8 AM |
6501 | /* Set e_type in ELF header to ET_EXEC for -pie -Ttext-segment=. |
6502 | ||
6503 | FIXME: We used to have code here to sort the PT_LOAD segments into | |
6504 | ascending order, as per the ELF spec. But this breaks some programs, | |
6505 | including the Linux kernel. But really either the spec should be | |
6506 | changed or the programs updated. */ | |
6507 | ||
0a1b45a2 | 6508 | bool |
6d6c25c8 AM |
6509 | _bfd_elf_modify_headers (bfd *obfd, struct bfd_link_info *link_info) |
6510 | { | |
6511 | if (link_info != NULL && bfd_link_pie (link_info)) | |
6512 | { | |
6513 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (obfd); | |
6514 | unsigned int num_segments = i_ehdrp->e_phnum; | |
6515 | struct elf_obj_tdata *tdata = elf_tdata (obfd); | |
6516 | Elf_Internal_Phdr *segment = tdata->phdr; | |
6517 | Elf_Internal_Phdr *end_segment = &segment[num_segments]; | |
6518 | ||
6519 | /* Find the lowest p_vaddr in PT_LOAD segments. */ | |
6520 | bfd_vma p_vaddr = (bfd_vma) -1; | |
6521 | for (; segment < end_segment; segment++) | |
6522 | if (segment->p_type == PT_LOAD && p_vaddr > segment->p_vaddr) | |
6523 | p_vaddr = segment->p_vaddr; | |
6524 | ||
6525 | /* Set e_type to ET_EXEC if the lowest p_vaddr in PT_LOAD | |
6526 | segments is non-zero. */ | |
6527 | if (p_vaddr) | |
6528 | i_ehdrp->e_type = ET_EXEC; | |
6529 | } | |
0a1b45a2 | 6530 | return true; |
6d6c25c8 AM |
6531 | } |
6532 | ||
252b5132 | 6533 | /* Assign file positions for all the reloc sections which are not part |
a485e98e | 6534 | of the loadable file image, and the file position of section headers. */ |
252b5132 | 6535 | |
0a1b45a2 | 6536 | static bool |
0ce398f1 | 6537 | _bfd_elf_assign_file_positions_for_non_load (bfd *abfd) |
252b5132 RH |
6538 | { |
6539 | file_ptr off; | |
e06efbf1 | 6540 | Elf_Internal_Shdr **shdrpp, **end_shdrpp; |
3e19fb8f | 6541 | Elf_Internal_Shdr *shdrp; |
a485e98e AM |
6542 | Elf_Internal_Ehdr *i_ehdrp; |
6543 | const struct elf_backend_data *bed; | |
252b5132 | 6544 | |
12bd6957 | 6545 | off = elf_next_file_pos (abfd); |
252b5132 | 6546 | |
e06efbf1 L |
6547 | shdrpp = elf_elfsections (abfd); |
6548 | end_shdrpp = shdrpp + elf_numsections (abfd); | |
6549 | for (shdrpp++; shdrpp < end_shdrpp; shdrpp++) | |
252b5132 | 6550 | { |
252b5132 | 6551 | shdrp = *shdrpp; |
0ce398f1 L |
6552 | if (shdrp->sh_offset == -1) |
6553 | { | |
3e19fb8f | 6554 | asection *sec = shdrp->bfd_section; |
0a1b45a2 AM |
6555 | bool is_rel = (shdrp->sh_type == SHT_REL |
6556 | || shdrp->sh_type == SHT_RELA); | |
6557 | bool is_ctf = sec && bfd_section_is_ctf (sec); | |
0ce398f1 | 6558 | if (is_rel |
1ff6de03 | 6559 | || is_ctf |
3e19fb8f | 6560 | || (sec != NULL && (sec->flags & SEC_ELF_COMPRESS))) |
0ce398f1 | 6561 | { |
1ff6de03 | 6562 | if (!is_rel && !is_ctf) |
0ce398f1 | 6563 | { |
3e19fb8f L |
6564 | const char *name = sec->name; |
6565 | struct bfd_elf_section_data *d; | |
6566 | ||
0ce398f1 | 6567 | /* Compress DWARF debug sections. */ |
3e19fb8f | 6568 | if (!bfd_compress_section (abfd, sec, |
0ce398f1 | 6569 | shdrp->contents)) |
0a1b45a2 | 6570 | return false; |
3e19fb8f L |
6571 | |
6572 | if (sec->compress_status == COMPRESS_SECTION_DONE | |
6573 | && (abfd->flags & BFD_COMPRESS_GABI) == 0) | |
6574 | { | |
6575 | /* If section is compressed with zlib-gnu, convert | |
6576 | section name from .debug_* to .zdebug_*. */ | |
6577 | char *new_name | |
6578 | = convert_debug_to_zdebug (abfd, name); | |
6579 | if (new_name == NULL) | |
0a1b45a2 | 6580 | return false; |
3e19fb8f L |
6581 | name = new_name; |
6582 | } | |
dd905818 | 6583 | /* Add section name to section name section. */ |
3e19fb8f L |
6584 | if (shdrp->sh_name != (unsigned int) -1) |
6585 | abort (); | |
6586 | shdrp->sh_name | |
6587 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
0a1b45a2 | 6588 | name, false); |
3e19fb8f L |
6589 | d = elf_section_data (sec); |
6590 | ||
dd905818 | 6591 | /* Add reloc section name to section name section. */ |
3e19fb8f L |
6592 | if (d->rel.hdr |
6593 | && !_bfd_elf_set_reloc_sh_name (abfd, | |
6594 | d->rel.hdr, | |
0a1b45a2 AM |
6595 | name, false)) |
6596 | return false; | |
3e19fb8f L |
6597 | if (d->rela.hdr |
6598 | && !_bfd_elf_set_reloc_sh_name (abfd, | |
6599 | d->rela.hdr, | |
0a1b45a2 AM |
6600 | name, true)) |
6601 | return false; | |
3e19fb8f | 6602 | |
0ce398f1 | 6603 | /* Update section size and contents. */ |
3e19fb8f L |
6604 | shdrp->sh_size = sec->size; |
6605 | shdrp->contents = sec->contents; | |
0ce398f1 L |
6606 | shdrp->bfd_section->contents = NULL; |
6607 | } | |
1ff6de03 NA |
6608 | else if (is_ctf) |
6609 | { | |
6610 | /* Update section size and contents. */ | |
6611 | shdrp->sh_size = sec->size; | |
6612 | shdrp->contents = sec->contents; | |
6613 | } | |
6614 | ||
0ce398f1 L |
6615 | off = _bfd_elf_assign_file_position_for_section (shdrp, |
6616 | off, | |
0a1b45a2 | 6617 | true); |
0ce398f1 L |
6618 | } |
6619 | } | |
252b5132 RH |
6620 | } |
6621 | ||
3e19fb8f L |
6622 | /* Place section name section after DWARF debug sections have been |
6623 | compressed. */ | |
6624 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); | |
6625 | shdrp = &elf_tdata (abfd)->shstrtab_hdr; | |
6626 | shdrp->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
0a1b45a2 | 6627 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, true); |
3e19fb8f L |
6628 | |
6629 | /* Place the section headers. */ | |
a485e98e AM |
6630 | i_ehdrp = elf_elfheader (abfd); |
6631 | bed = get_elf_backend_data (abfd); | |
6632 | off = align_file_position (off, 1 << bed->s->log_file_align); | |
6633 | i_ehdrp->e_shoff = off; | |
6634 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
12bd6957 | 6635 | elf_next_file_pos (abfd) = off; |
0ce398f1 | 6636 | |
0a1b45a2 | 6637 | return true; |
252b5132 RH |
6638 | } |
6639 | ||
0a1b45a2 | 6640 | bool |
217aa764 | 6641 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 6642 | { |
9c5bfbb7 | 6643 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6644 | Elf_Internal_Shdr **i_shdrp; |
0a1b45a2 | 6645 | bool failed; |
9ad5cbcf | 6646 | unsigned int count, num_sec; |
30e8ee25 | 6647 | struct elf_obj_tdata *t; |
252b5132 RH |
6648 | |
6649 | if (! abfd->output_has_begun | |
217aa764 | 6650 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
0a1b45a2 | 6651 | return false; |
db727370 JL |
6652 | /* Do not rewrite ELF data when the BFD has been opened for update. |
6653 | abfd->output_has_begun was set to TRUE on opening, so creation of new | |
6654 | sections, and modification of existing section sizes was restricted. | |
6655 | This means the ELF header, program headers and section headers can't have | |
6656 | changed. | |
6657 | If the contents of any sections has been modified, then those changes have | |
6658 | already been written to the BFD. */ | |
6659 | else if (abfd->direction == both_direction) | |
6660 | { | |
6661 | BFD_ASSERT (abfd->output_has_begun); | |
0a1b45a2 | 6662 | return true; |
db727370 | 6663 | } |
252b5132 RH |
6664 | |
6665 | i_shdrp = elf_elfsections (abfd); | |
252b5132 | 6666 | |
0a1b45a2 | 6667 | failed = false; |
252b5132 RH |
6668 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
6669 | if (failed) | |
0a1b45a2 | 6670 | return false; |
252b5132 | 6671 | |
0ce398f1 | 6672 | if (!_bfd_elf_assign_file_positions_for_non_load (abfd)) |
0a1b45a2 | 6673 | return false; |
252b5132 | 6674 | |
c044fabd | 6675 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
6676 | num_sec = elf_numsections (abfd); |
6677 | for (count = 1; count < num_sec; count++) | |
252b5132 | 6678 | { |
3e19fb8f L |
6679 | i_shdrp[count]->sh_name |
6680 | = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
6681 | i_shdrp[count]->sh_name); | |
252b5132 | 6682 | if (bed->elf_backend_section_processing) |
75506100 | 6683 | if (!(*bed->elf_backend_section_processing) (abfd, i_shdrp[count])) |
0a1b45a2 | 6684 | return false; |
252b5132 RH |
6685 | if (i_shdrp[count]->contents) |
6686 | { | |
dc810e39 AM |
6687 | bfd_size_type amt = i_shdrp[count]->sh_size; |
6688 | ||
252b5132 | 6689 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 6690 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
0a1b45a2 | 6691 | return false; |
252b5132 RH |
6692 | } |
6693 | } | |
6694 | ||
6695 | /* Write out the section header names. */ | |
30e8ee25 | 6696 | t = elf_tdata (abfd); |
26ae6d5e | 6697 | if (elf_shstrtab (abfd) != NULL |
30e8ee25 | 6698 | && (bfd_seek (abfd, t->shstrtab_hdr.sh_offset, SEEK_SET) != 0 |
08a40648 | 6699 | || !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) |
0a1b45a2 | 6700 | return false; |
252b5132 | 6701 | |
cc364be6 | 6702 | if (!(*bed->elf_backend_final_write_processing) (abfd)) |
0a1b45a2 | 6703 | return false; |
252b5132 | 6704 | |
ff59fc36 | 6705 | if (!bed->s->write_shdrs_and_ehdr (abfd)) |
0a1b45a2 | 6706 | return false; |
ff59fc36 RM |
6707 | |
6708 | /* This is last since write_shdrs_and_ehdr can touch i_shdrp[0]. */ | |
c0355132 AM |
6709 | if (t->o->build_id.after_write_object_contents != NULL) |
6710 | return (*t->o->build_id.after_write_object_contents) (abfd); | |
ff59fc36 | 6711 | |
0a1b45a2 | 6712 | return true; |
252b5132 RH |
6713 | } |
6714 | ||
0a1b45a2 | 6715 | bool |
217aa764 | 6716 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 6717 | { |
c044fabd | 6718 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
6719 | return _bfd_elf_write_object_contents (abfd); |
6720 | } | |
c044fabd KH |
6721 | |
6722 | /* Given a section, search the header to find them. */ | |
6723 | ||
cb33740c | 6724 | unsigned int |
198beae2 | 6725 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 6726 | { |
9c5bfbb7 | 6727 | const struct elf_backend_data *bed; |
91d6fa6a | 6728 | unsigned int sec_index; |
252b5132 | 6729 | |
9ad5cbcf AM |
6730 | if (elf_section_data (asect) != NULL |
6731 | && elf_section_data (asect)->this_idx != 0) | |
6732 | return elf_section_data (asect)->this_idx; | |
6733 | ||
6734 | if (bfd_is_abs_section (asect)) | |
91d6fa6a | 6735 | sec_index = SHN_ABS; |
af746e92 | 6736 | else if (bfd_is_com_section (asect)) |
91d6fa6a | 6737 | sec_index = SHN_COMMON; |
af746e92 | 6738 | else if (bfd_is_und_section (asect)) |
91d6fa6a | 6739 | sec_index = SHN_UNDEF; |
af746e92 | 6740 | else |
91d6fa6a | 6741 | sec_index = SHN_BAD; |
252b5132 | 6742 | |
af746e92 | 6743 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
6744 | if (bed->elf_backend_section_from_bfd_section) |
6745 | { | |
91d6fa6a | 6746 | int retval = sec_index; |
9ad5cbcf | 6747 | |
af746e92 AM |
6748 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
6749 | return retval; | |
252b5132 RH |
6750 | } |
6751 | ||
91d6fa6a | 6752 | if (sec_index == SHN_BAD) |
af746e92 | 6753 | bfd_set_error (bfd_error_nonrepresentable_section); |
252b5132 | 6754 | |
91d6fa6a | 6755 | return sec_index; |
252b5132 RH |
6756 | } |
6757 | ||
6758 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
6759 | on error. */ | |
6760 | ||
6761 | int | |
217aa764 | 6762 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
6763 | { |
6764 | asymbol *asym_ptr = *asym_ptr_ptr; | |
6765 | int idx; | |
6766 | flagword flags = asym_ptr->flags; | |
6767 | ||
6768 | /* When gas creates relocations against local labels, it creates its | |
6769 | own symbol for the section, but does put the symbol into the | |
6770 | symbol chain, so udata is 0. When the linker is generating | |
6771 | relocatable output, this section symbol may be for one of the | |
6772 | input sections rather than the output section. */ | |
6773 | if (asym_ptr->udata.i == 0 | |
6774 | && (flags & BSF_SECTION_SYM) | |
6775 | && asym_ptr->section) | |
6776 | { | |
5372391b | 6777 | asection *sec; |
252b5132 RH |
6778 | int indx; |
6779 | ||
5372391b AM |
6780 | sec = asym_ptr->section; |
6781 | if (sec->owner != abfd && sec->output_section != NULL) | |
6782 | sec = sec->output_section; | |
6783 | if (sec->owner == abfd | |
6784 | && (indx = sec->index) < elf_num_section_syms (abfd) | |
4e89ac30 | 6785 | && elf_section_syms (abfd)[indx] != NULL) |
252b5132 RH |
6786 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
6787 | } | |
6788 | ||
6789 | idx = asym_ptr->udata.i; | |
6790 | ||
6791 | if (idx == 0) | |
6792 | { | |
6793 | /* This case can occur when using --strip-symbol on a symbol | |
08a40648 | 6794 | which is used in a relocation entry. */ |
4eca0228 | 6795 | _bfd_error_handler |
695344c0 | 6796 | /* xgettext:c-format */ |
871b3ab2 | 6797 | (_("%pB: symbol `%s' required but not present"), |
d003868e | 6798 | abfd, bfd_asymbol_name (asym_ptr)); |
252b5132 RH |
6799 | bfd_set_error (bfd_error_no_symbols); |
6800 | return -1; | |
6801 | } | |
6802 | ||
6803 | #if DEBUG & 4 | |
6804 | { | |
6805 | fprintf (stderr, | |
cd9af601 AM |
6806 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8x\n", |
6807 | (long) asym_ptr, asym_ptr->name, idx, flags); | |
252b5132 RH |
6808 | fflush (stderr); |
6809 | } | |
6810 | #endif | |
6811 | ||
6812 | return idx; | |
6813 | } | |
6814 | ||
84d1d650 | 6815 | /* Rewrite program header information. */ |
252b5132 | 6816 | |
0a1b45a2 | 6817 | static bool |
c410035d | 6818 | rewrite_elf_program_header (bfd *ibfd, bfd *obfd, bfd_vma maxpagesize) |
252b5132 | 6819 | { |
b34976b6 AM |
6820 | Elf_Internal_Ehdr *iehdr; |
6821 | struct elf_segment_map *map; | |
6822 | struct elf_segment_map *map_first; | |
6823 | struct elf_segment_map **pointer_to_map; | |
6824 | Elf_Internal_Phdr *segment; | |
6825 | asection *section; | |
6826 | unsigned int i; | |
6827 | unsigned int num_segments; | |
0a1b45a2 AM |
6828 | bool phdr_included = false; |
6829 | bool p_paddr_valid; | |
b34976b6 AM |
6830 | struct elf_segment_map *phdr_adjust_seg = NULL; |
6831 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 6832 | const struct elf_backend_data *bed; |
502794d4 | 6833 | unsigned int opb = bfd_octets_per_byte (ibfd, NULL); |
bc67d8a6 | 6834 | |
caf47ea6 | 6835 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
6836 | iehdr = elf_elfheader (ibfd); |
6837 | ||
bc67d8a6 | 6838 | map_first = NULL; |
c044fabd | 6839 | pointer_to_map = &map_first; |
252b5132 RH |
6840 | |
6841 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
6842 | |
6843 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
6844 | #define SEGMENT_END(segment, start) \ |
6845 | (start + (segment->p_memsz > segment->p_filesz \ | |
6846 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 6847 | |
eecdbe52 JJ |
6848 | #define SECTION_SIZE(section, segment) \ |
6849 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
6850 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 6851 | ? section->size : 0) |
eecdbe52 | 6852 | |
b34976b6 | 6853 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 6854 | the given segment. VMA addresses are compared. */ |
502794d4 CE |
6855 | #define IS_CONTAINED_BY_VMA(section, segment, opb) \ |
6856 | (section->vma * (opb) >= segment->p_vaddr \ | |
6857 | && (section->vma * (opb) + SECTION_SIZE (section, segment) \ | |
aecc8f8a | 6858 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 6859 | |
b34976b6 | 6860 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 6861 | the given segment. LMA addresses are compared. */ |
502794d4 CE |
6862 | #define IS_CONTAINED_BY_LMA(section, segment, base, opb) \ |
6863 | (section->lma * (opb) >= base \ | |
6864 | && (section->lma + SECTION_SIZE (section, segment) / (opb) >= section->lma) \ | |
6865 | && (section->lma * (opb) + SECTION_SIZE (section, segment) \ | |
aecc8f8a | 6866 | <= SEGMENT_END (segment, base))) |
252b5132 | 6867 | |
0efc80c8 L |
6868 | /* Handle PT_NOTE segment. */ |
6869 | #define IS_NOTE(p, s) \ | |
aecc8f8a | 6870 | (p->p_type == PT_NOTE \ |
0efc80c8 | 6871 | && elf_section_type (s) == SHT_NOTE \ |
aecc8f8a | 6872 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 6873 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 6874 | <= p->p_offset + p->p_filesz)) |
252b5132 | 6875 | |
0efc80c8 L |
6876 | /* Special case: corefile "NOTE" section containing regs, prpsinfo |
6877 | etc. */ | |
6878 | #define IS_COREFILE_NOTE(p, s) \ | |
6879 | (IS_NOTE (p, s) \ | |
6880 | && bfd_get_format (ibfd) == bfd_core \ | |
6881 | && s->vma == 0 \ | |
6882 | && s->lma == 0) | |
6883 | ||
252b5132 RH |
6884 | /* The complicated case when p_vaddr is 0 is to handle the Solaris |
6885 | linker, which generates a PT_INTERP section with p_vaddr and | |
6886 | p_memsz set to 0. */ | |
aecc8f8a AM |
6887 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
6888 | (p->p_vaddr == 0 \ | |
6889 | && p->p_paddr == 0 \ | |
6890 | && p->p_memsz == 0 \ | |
6891 | && p->p_filesz > 0 \ | |
6892 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 6893 | && s->size > 0 \ |
aecc8f8a | 6894 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 6895 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 6896 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 6897 | |
bc67d8a6 NC |
6898 | /* Decide if the given section should be included in the given segment. |
6899 | A section will be included if: | |
f5ffc919 | 6900 | 1. It is within the address space of the segment -- we use the LMA |
08a40648 | 6901 | if that is set for the segment and the VMA otherwise, |
0efc80c8 | 6902 | 2. It is an allocated section or a NOTE section in a PT_NOTE |
d324f6d6 | 6903 | segment. |
bc67d8a6 | 6904 | 3. There is an output section associated with it, |
eecdbe52 | 6905 | 4. The section has not already been allocated to a previous segment. |
2b05f1b7 | 6906 | 5. PT_GNU_STACK segments do not include any sections. |
03394ac9 | 6907 | 6. PT_TLS segment includes only SHF_TLS sections. |
6f79b219 JJ |
6908 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
6909 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
08a40648 | 6910 | (with the possible exception of .dynamic). */ |
502794d4 | 6911 | #define IS_SECTION_IN_INPUT_SEGMENT(section, segment, bed, opb) \ |
2b05f1b7 | 6912 | ((((segment->p_paddr \ |
502794d4 CE |
6913 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr, opb) \ |
6914 | : IS_CONTAINED_BY_VMA (section, segment, opb)) \ | |
2b05f1b7 | 6915 | && (section->flags & SEC_ALLOC) != 0) \ |
0efc80c8 | 6916 | || IS_NOTE (segment, section)) \ |
2b05f1b7 L |
6917 | && segment->p_type != PT_GNU_STACK \ |
6918 | && (segment->p_type != PT_TLS \ | |
6919 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
6920 | && (segment->p_type == PT_LOAD \ | |
6921 | || segment->p_type == PT_TLS \ | |
6922 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
6923 | && (segment->p_type != PT_DYNAMIC \ | |
6924 | || SECTION_SIZE (section, segment) > 0 \ | |
6925 | || (segment->p_paddr \ | |
502794d4 CE |
6926 | ? segment->p_paddr != section->lma * (opb) \ |
6927 | : segment->p_vaddr != section->vma * (opb)) \ | |
fd361982 | 6928 | || (strcmp (bfd_section_name (section), ".dynamic") == 0)) \ |
9933dc52 | 6929 | && (segment->p_type != PT_LOAD || !section->segment_mark)) |
bc67d8a6 | 6930 | |
9f17e2a6 L |
6931 | /* If the output section of a section in the input segment is NULL, |
6932 | it is removed from the corresponding output segment. */ | |
502794d4 CE |
6933 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed, opb) \ |
6934 | (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed, opb) \ | |
9f17e2a6 L |
6935 | && section->output_section != NULL) |
6936 | ||
b34976b6 | 6937 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
6938 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
6939 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
6940 | ||
6941 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
6942 | their VMA address ranges and their LMA address ranges overlap. | |
6943 | It is possible to have overlapping VMA ranges without overlapping LMA | |
6944 | ranges. RedBoot images for example can have both .data and .bss mapped | |
6945 | to the same VMA range, but with the .data section mapped to a different | |
6946 | LMA. */ | |
aecc8f8a | 6947 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea | 6948 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
08a40648 | 6949 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ |
b5f852ea | 6950 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ |
08a40648 | 6951 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) |
bc67d8a6 NC |
6952 | |
6953 | /* Initialise the segment mark field. */ | |
6954 | for (section = ibfd->sections; section != NULL; section = section->next) | |
0a1b45a2 | 6955 | section->segment_mark = false; |
bc67d8a6 | 6956 | |
5c44b38e AM |
6957 | /* The Solaris linker creates program headers in which all the |
6958 | p_paddr fields are zero. When we try to objcopy or strip such a | |
6959 | file, we get confused. Check for this case, and if we find it | |
6960 | don't set the p_paddr_valid fields. */ | |
0a1b45a2 | 6961 | p_paddr_valid = false; |
5c44b38e AM |
6962 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
6963 | i < num_segments; | |
6964 | i++, segment++) | |
6965 | if (segment->p_paddr != 0) | |
6966 | { | |
0a1b45a2 | 6967 | p_paddr_valid = true; |
5c44b38e AM |
6968 | break; |
6969 | } | |
6970 | ||
252b5132 | 6971 | /* Scan through the segments specified in the program header |
bc67d8a6 | 6972 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 6973 | in the loadable segments. These can be created by weird |
aecc8f8a | 6974 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
6975 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
6976 | i < num_segments; | |
c044fabd | 6977 | i++, segment++) |
252b5132 | 6978 | { |
252b5132 | 6979 | unsigned int j; |
c044fabd | 6980 | Elf_Internal_Phdr *segment2; |
252b5132 | 6981 | |
aecc8f8a AM |
6982 | if (segment->p_type == PT_INTERP) |
6983 | for (section = ibfd->sections; section; section = section->next) | |
6984 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
6985 | { | |
6986 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 6987 | assignment code will work. */ |
502794d4 | 6988 | segment->p_vaddr = section->vma * opb; |
aecc8f8a AM |
6989 | break; |
6990 | } | |
6991 | ||
bc67d8a6 | 6992 | if (segment->p_type != PT_LOAD) |
b10a8ae0 L |
6993 | { |
6994 | /* Remove PT_GNU_RELRO segment. */ | |
6995 | if (segment->p_type == PT_GNU_RELRO) | |
6996 | segment->p_type = PT_NULL; | |
6997 | continue; | |
6998 | } | |
c044fabd | 6999 | |
bc67d8a6 | 7000 | /* Determine if this segment overlaps any previous segments. */ |
0067a569 | 7001 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2++) |
bc67d8a6 NC |
7002 | { |
7003 | bfd_signed_vma extra_length; | |
c044fabd | 7004 | |
bc67d8a6 | 7005 | if (segment2->p_type != PT_LOAD |
0067a569 | 7006 | || !SEGMENT_OVERLAPS (segment, segment2)) |
bc67d8a6 | 7007 | continue; |
c044fabd | 7008 | |
bc67d8a6 NC |
7009 | /* Merge the two segments together. */ |
7010 | if (segment2->p_vaddr < segment->p_vaddr) | |
7011 | { | |
c044fabd | 7012 | /* Extend SEGMENT2 to include SEGMENT and then delete |
08a40648 | 7013 | SEGMENT. */ |
0067a569 AM |
7014 | extra_length = (SEGMENT_END (segment, segment->p_vaddr) |
7015 | - SEGMENT_END (segment2, segment2->p_vaddr)); | |
c044fabd | 7016 | |
bc67d8a6 NC |
7017 | if (extra_length > 0) |
7018 | { | |
0067a569 | 7019 | segment2->p_memsz += extra_length; |
bc67d8a6 NC |
7020 | segment2->p_filesz += extra_length; |
7021 | } | |
c044fabd | 7022 | |
bc67d8a6 | 7023 | segment->p_type = PT_NULL; |
c044fabd | 7024 | |
bc67d8a6 NC |
7025 | /* Since we have deleted P we must restart the outer loop. */ |
7026 | i = 0; | |
7027 | segment = elf_tdata (ibfd)->phdr; | |
7028 | break; | |
7029 | } | |
7030 | else | |
7031 | { | |
c044fabd | 7032 | /* Extend SEGMENT to include SEGMENT2 and then delete |
08a40648 | 7033 | SEGMENT2. */ |
0067a569 AM |
7034 | extra_length = (SEGMENT_END (segment2, segment2->p_vaddr) |
7035 | - SEGMENT_END (segment, segment->p_vaddr)); | |
c044fabd | 7036 | |
bc67d8a6 NC |
7037 | if (extra_length > 0) |
7038 | { | |
0067a569 | 7039 | segment->p_memsz += extra_length; |
bc67d8a6 NC |
7040 | segment->p_filesz += extra_length; |
7041 | } | |
c044fabd | 7042 | |
bc67d8a6 NC |
7043 | segment2->p_type = PT_NULL; |
7044 | } | |
7045 | } | |
7046 | } | |
c044fabd | 7047 | |
bc67d8a6 NC |
7048 | /* The second scan attempts to assign sections to segments. */ |
7049 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
7050 | i < num_segments; | |
0067a569 | 7051 | i++, segment++) |
bc67d8a6 | 7052 | { |
0067a569 AM |
7053 | unsigned int section_count; |
7054 | asection **sections; | |
7055 | asection *output_section; | |
7056 | unsigned int isec; | |
9933dc52 AM |
7057 | asection *matching_lma; |
7058 | asection *suggested_lma; | |
0067a569 | 7059 | unsigned int j; |
446f7ed5 | 7060 | size_t amt; |
0067a569 | 7061 | asection *first_section; |
bc67d8a6 NC |
7062 | |
7063 | if (segment->p_type == PT_NULL) | |
7064 | continue; | |
c044fabd | 7065 | |
9f17e2a6 | 7066 | first_section = NULL; |
bc67d8a6 | 7067 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
7068 | for (section = ibfd->sections, section_count = 0; |
7069 | section != NULL; | |
7070 | section = section->next) | |
9f17e2a6 L |
7071 | { |
7072 | /* Find the first section in the input segment, which may be | |
7073 | removed from the corresponding output segment. */ | |
502794d4 | 7074 | if (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed, opb)) |
9f17e2a6 L |
7075 | { |
7076 | if (first_section == NULL) | |
7077 | first_section = section; | |
7078 | if (section->output_section != NULL) | |
7079 | ++section_count; | |
7080 | } | |
7081 | } | |
811072d8 | 7082 | |
b5f852ea NC |
7083 | /* Allocate a segment map big enough to contain |
7084 | all of the sections we have selected. */ | |
00bee008 | 7085 | amt = sizeof (struct elf_segment_map) - sizeof (asection *); |
446f7ed5 | 7086 | amt += section_count * sizeof (asection *); |
a50b1753 | 7087 | map = (struct elf_segment_map *) bfd_zalloc (obfd, amt); |
bc67d8a6 | 7088 | if (map == NULL) |
0a1b45a2 | 7089 | return false; |
252b5132 RH |
7090 | |
7091 | /* Initialise the fields of the segment map. Default to | |
7092 | using the physical address of the segment in the input BFD. */ | |
0067a569 AM |
7093 | map->next = NULL; |
7094 | map->p_type = segment->p_type; | |
7095 | map->p_flags = segment->p_flags; | |
bc67d8a6 | 7096 | map->p_flags_valid = 1; |
55d55ac7 | 7097 | |
c410035d AM |
7098 | if (map->p_type == PT_LOAD |
7099 | && (ibfd->flags & D_PAGED) != 0 | |
7100 | && maxpagesize > 1 | |
7101 | && segment->p_align > 1) | |
7102 | { | |
7103 | map->p_align = segment->p_align; | |
7104 | if (segment->p_align > maxpagesize) | |
7105 | map->p_align = maxpagesize; | |
7106 | map->p_align_valid = 1; | |
7107 | } | |
7108 | ||
9f17e2a6 L |
7109 | /* If the first section in the input segment is removed, there is |
7110 | no need to preserve segment physical address in the corresponding | |
7111 | output segment. */ | |
945c025a | 7112 | if (!first_section || first_section->output_section != NULL) |
9f17e2a6 L |
7113 | { |
7114 | map->p_paddr = segment->p_paddr; | |
5c44b38e | 7115 | map->p_paddr_valid = p_paddr_valid; |
9f17e2a6 | 7116 | } |
252b5132 RH |
7117 | |
7118 | /* Determine if this segment contains the ELF file header | |
7119 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
7120 | map->includes_filehdr = (segment->p_offset == 0 |
7121 | && segment->p_filesz >= iehdr->e_ehsize); | |
bc67d8a6 | 7122 | map->includes_phdrs = 0; |
252b5132 | 7123 | |
0067a569 | 7124 | if (!phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 7125 | { |
bc67d8a6 NC |
7126 | map->includes_phdrs = |
7127 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
7128 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
7129 | >= ((bfd_vma) iehdr->e_phoff |
7130 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 7131 | |
bc67d8a6 | 7132 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
0a1b45a2 | 7133 | phdr_included = true; |
252b5132 RH |
7134 | } |
7135 | ||
bc67d8a6 | 7136 | if (section_count == 0) |
252b5132 RH |
7137 | { |
7138 | /* Special segments, such as the PT_PHDR segment, may contain | |
7139 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 | 7140 | something. They are allowed by the ELF spec however, so only |
07d6d2b8 | 7141 | a warning is produced. |
f98450c6 NC |
7142 | There is however the valid use case of embedded systems which |
7143 | have segments with p_filesz of 0 and a p_memsz > 0 to initialize | |
7144 | flash memory with zeros. No warning is shown for that case. */ | |
7145 | if (segment->p_type == PT_LOAD | |
7146 | && (segment->p_filesz > 0 || segment->p_memsz == 0)) | |
7147 | /* xgettext:c-format */ | |
9793eb77 AM |
7148 | _bfd_error_handler |
7149 | (_("%pB: warning: empty loadable segment detected" | |
7150 | " at vaddr=%#" PRIx64 ", is this intentional?"), | |
7151 | ibfd, (uint64_t) segment->p_vaddr); | |
252b5132 | 7152 | |
502794d4 | 7153 | map->p_vaddr_offset = segment->p_vaddr / opb; |
bc67d8a6 | 7154 | map->count = 0; |
c044fabd KH |
7155 | *pointer_to_map = map; |
7156 | pointer_to_map = &map->next; | |
252b5132 RH |
7157 | |
7158 | continue; | |
7159 | } | |
7160 | ||
7161 | /* Now scan the sections in the input BFD again and attempt | |
7162 | to add their corresponding output sections to the segment map. | |
7163 | The problem here is how to handle an output section which has | |
7164 | been moved (ie had its LMA changed). There are four possibilities: | |
7165 | ||
7166 | 1. None of the sections have been moved. | |
7167 | In this case we can continue to use the segment LMA from the | |
7168 | input BFD. | |
7169 | ||
7170 | 2. All of the sections have been moved by the same amount. | |
7171 | In this case we can change the segment's LMA to match the LMA | |
7172 | of the first section. | |
7173 | ||
7174 | 3. Some of the sections have been moved, others have not. | |
7175 | In this case those sections which have not been moved can be | |
7176 | placed in the current segment which will have to have its size, | |
7177 | and possibly its LMA changed, and a new segment or segments will | |
7178 | have to be created to contain the other sections. | |
7179 | ||
b5f852ea | 7180 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
7181 | In this case we can change the segment's LMA to match the LMA |
7182 | of the first section and we will have to create a new segment | |
7183 | or segments to contain the other sections. | |
7184 | ||
7185 | In order to save time, we allocate an array to hold the section | |
7186 | pointers that we are interested in. As these sections get assigned | |
7187 | to a segment, they are removed from this array. */ | |
7188 | ||
446f7ed5 AM |
7189 | amt = section_count * sizeof (asection *); |
7190 | sections = (asection **) bfd_malloc (amt); | |
252b5132 | 7191 | if (sections == NULL) |
0a1b45a2 | 7192 | return false; |
252b5132 RH |
7193 | |
7194 | /* Step One: Scan for segment vs section LMA conflicts. | |
7195 | Also add the sections to the section array allocated above. | |
7196 | Also add the sections to the current segment. In the common | |
7197 | case, where the sections have not been moved, this means that | |
7198 | we have completely filled the segment, and there is nothing | |
7199 | more to do. */ | |
252b5132 | 7200 | isec = 0; |
9933dc52 AM |
7201 | matching_lma = NULL; |
7202 | suggested_lma = NULL; | |
252b5132 | 7203 | |
461c4b2e | 7204 | for (section = first_section, j = 0; |
bc67d8a6 NC |
7205 | section != NULL; |
7206 | section = section->next) | |
252b5132 | 7207 | { |
502794d4 | 7208 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed, opb)) |
c0f7859b | 7209 | { |
bc67d8a6 NC |
7210 | output_section = section->output_section; |
7211 | ||
0067a569 | 7212 | sections[j++] = section; |
252b5132 RH |
7213 | |
7214 | /* The Solaris native linker always sets p_paddr to 0. | |
7215 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
7216 | correct value. Note - some backends require that |
7217 | p_paddr be left as zero. */ | |
5c44b38e | 7218 | if (!p_paddr_valid |
4455705d | 7219 | && segment->p_vaddr != 0 |
0067a569 | 7220 | && !bed->want_p_paddr_set_to_zero |
252b5132 | 7221 | && isec == 0 |
bc67d8a6 | 7222 | && output_section->lma != 0 |
9933dc52 AM |
7223 | && (align_power (segment->p_vaddr |
7224 | + (map->includes_filehdr | |
7225 | ? iehdr->e_ehsize : 0) | |
7226 | + (map->includes_phdrs | |
7227 | ? iehdr->e_phnum * iehdr->e_phentsize | |
7228 | : 0), | |
66631823 CE |
7229 | output_section->alignment_power * opb) |
7230 | == (output_section->vma * opb))) | |
bc67d8a6 | 7231 | map->p_paddr = segment->p_vaddr; |
252b5132 RH |
7232 | |
7233 | /* Match up the physical address of the segment with the | |
7234 | LMA address of the output section. */ | |
502794d4 CE |
7235 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr, |
7236 | opb) | |
5e8d7549 | 7237 | || IS_COREFILE_NOTE (segment, section) |
0067a569 | 7238 | || (bed->want_p_paddr_set_to_zero |
502794d4 | 7239 | && IS_CONTAINED_BY_VMA (output_section, segment, opb))) |
252b5132 | 7240 | { |
9933dc52 AM |
7241 | if (matching_lma == NULL |
7242 | || output_section->lma < matching_lma->lma) | |
7243 | matching_lma = output_section; | |
252b5132 RH |
7244 | |
7245 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 7246 | then it does not overlap any other section within that |
252b5132 | 7247 | segment. */ |
0067a569 AM |
7248 | map->sections[isec++] = output_section; |
7249 | } | |
9933dc52 AM |
7250 | else if (suggested_lma == NULL) |
7251 | suggested_lma = output_section; | |
147d51c2 L |
7252 | |
7253 | if (j == section_count) | |
7254 | break; | |
252b5132 RH |
7255 | } |
7256 | } | |
7257 | ||
bc67d8a6 | 7258 | BFD_ASSERT (j == section_count); |
252b5132 RH |
7259 | |
7260 | /* Step Two: Adjust the physical address of the current segment, | |
7261 | if necessary. */ | |
bc67d8a6 | 7262 | if (isec == section_count) |
252b5132 RH |
7263 | { |
7264 | /* All of the sections fitted within the segment as currently | |
7265 | specified. This is the default case. Add the segment to | |
7266 | the list of built segments and carry on to process the next | |
7267 | program header in the input BFD. */ | |
bc67d8a6 | 7268 | map->count = section_count; |
c044fabd KH |
7269 | *pointer_to_map = map; |
7270 | pointer_to_map = &map->next; | |
08a40648 | 7271 | |
5c44b38e | 7272 | if (p_paddr_valid |
30fe1832 AM |
7273 | && !bed->want_p_paddr_set_to_zero) |
7274 | { | |
7275 | bfd_vma hdr_size = 0; | |
7276 | if (map->includes_filehdr) | |
7277 | hdr_size = iehdr->e_ehsize; | |
7278 | if (map->includes_phdrs) | |
7279 | hdr_size += iehdr->e_phnum * iehdr->e_phentsize; | |
7280 | ||
7281 | /* Account for padding before the first section in the | |
7282 | segment. */ | |
502794d4 CE |
7283 | map->p_vaddr_offset = ((map->p_paddr + hdr_size) / opb |
7284 | - matching_lma->lma); | |
30fe1832 | 7285 | } |
08a40648 | 7286 | |
252b5132 RH |
7287 | free (sections); |
7288 | continue; | |
7289 | } | |
252b5132 RH |
7290 | else |
7291 | { | |
9933dc52 AM |
7292 | /* Change the current segment's physical address to match |
7293 | the LMA of the first section that fitted, or if no | |
7294 | section fitted, the first section. */ | |
7295 | if (matching_lma == NULL) | |
7296 | matching_lma = suggested_lma; | |
7297 | ||
66631823 | 7298 | map->p_paddr = matching_lma->lma * opb; |
72730e0c | 7299 | |
bc67d8a6 NC |
7300 | /* Offset the segment physical address from the lma |
7301 | to allow for space taken up by elf headers. */ | |
9933dc52 | 7302 | if (map->includes_phdrs) |
010c8431 | 7303 | { |
9933dc52 AM |
7304 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; |
7305 | ||
7306 | /* iehdr->e_phnum is just an estimate of the number | |
7307 | of program headers that we will need. Make a note | |
7308 | here of the number we used and the segment we chose | |
7309 | to hold these headers, so that we can adjust the | |
7310 | offset when we know the correct value. */ | |
7311 | phdr_adjust_num = iehdr->e_phnum; | |
7312 | phdr_adjust_seg = map; | |
010c8431 | 7313 | } |
252b5132 | 7314 | |
9933dc52 | 7315 | if (map->includes_filehdr) |
bc67d8a6 | 7316 | { |
9933dc52 AM |
7317 | bfd_vma align = (bfd_vma) 1 << matching_lma->alignment_power; |
7318 | map->p_paddr -= iehdr->e_ehsize; | |
7319 | /* We've subtracted off the size of headers from the | |
7320 | first section lma, but there may have been some | |
7321 | alignment padding before that section too. Try to | |
7322 | account for that by adjusting the segment lma down to | |
7323 | the same alignment. */ | |
7324 | if (segment->p_align != 0 && segment->p_align < align) | |
7325 | align = segment->p_align; | |
66631823 | 7326 | map->p_paddr &= -(align * opb); |
bc67d8a6 | 7327 | } |
252b5132 RH |
7328 | } |
7329 | ||
7330 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 7331 | those that fit to the current segment and removing them from the |
252b5132 RH |
7332 | sections array; but making sure not to leave large gaps. Once all |
7333 | possible sections have been assigned to the current segment it is | |
7334 | added to the list of built segments and if sections still remain | |
7335 | to be assigned, a new segment is constructed before repeating | |
7336 | the loop. */ | |
7337 | isec = 0; | |
7338 | do | |
7339 | { | |
bc67d8a6 | 7340 | map->count = 0; |
9933dc52 | 7341 | suggested_lma = NULL; |
252b5132 RH |
7342 | |
7343 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 7344 | for (j = 0; j < section_count; j++) |
252b5132 | 7345 | { |
bc67d8a6 | 7346 | section = sections[j]; |
252b5132 | 7347 | |
bc67d8a6 | 7348 | if (section == NULL) |
252b5132 RH |
7349 | continue; |
7350 | ||
bc67d8a6 | 7351 | output_section = section->output_section; |
252b5132 | 7352 | |
bc67d8a6 | 7353 | BFD_ASSERT (output_section != NULL); |
c044fabd | 7354 | |
502794d4 CE |
7355 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr, |
7356 | opb) | |
bc67d8a6 | 7357 | || IS_COREFILE_NOTE (segment, section)) |
252b5132 | 7358 | { |
bc67d8a6 | 7359 | if (map->count == 0) |
252b5132 RH |
7360 | { |
7361 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
7362 | the beginning of the segment, then something is |
7363 | wrong. */ | |
9933dc52 AM |
7364 | if (align_power (map->p_paddr |
7365 | + (map->includes_filehdr | |
7366 | ? iehdr->e_ehsize : 0) | |
7367 | + (map->includes_phdrs | |
7368 | ? iehdr->e_phnum * iehdr->e_phentsize | |
7369 | : 0), | |
66631823 CE |
7370 | output_section->alignment_power * opb) |
7371 | != output_section->lma * opb) | |
9aea1e31 | 7372 | goto sorry; |
252b5132 RH |
7373 | } |
7374 | else | |
7375 | { | |
0067a569 | 7376 | asection *prev_sec; |
252b5132 | 7377 | |
bc67d8a6 | 7378 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
7379 | |
7380 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
7381 | and the start of this section is more than |
7382 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 7383 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 7384 | maxpagesize) |
caf47ea6 | 7385 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
0067a569 | 7386 | || (prev_sec->lma + prev_sec->size |
079e9a2f | 7387 | > output_section->lma)) |
252b5132 | 7388 | { |
9933dc52 AM |
7389 | if (suggested_lma == NULL) |
7390 | suggested_lma = output_section; | |
252b5132 RH |
7391 | |
7392 | continue; | |
7393 | } | |
7394 | } | |
7395 | ||
bc67d8a6 | 7396 | map->sections[map->count++] = output_section; |
252b5132 RH |
7397 | ++isec; |
7398 | sections[j] = NULL; | |
9933dc52 | 7399 | if (segment->p_type == PT_LOAD) |
0a1b45a2 | 7400 | section->segment_mark = true; |
0067a569 | 7401 | } |
9933dc52 AM |
7402 | else if (suggested_lma == NULL) |
7403 | suggested_lma = output_section; | |
252b5132 RH |
7404 | } |
7405 | ||
beab4532 NC |
7406 | /* PR 23932. A corrupt input file may contain sections that cannot |
7407 | be assigned to any segment - because for example they have a | |
9984857c NC |
7408 | negative size - or segments that do not contain any sections. |
7409 | But there are also valid reasons why a segment can be empty. | |
7410 | So allow a count of zero. */ | |
252b5132 RH |
7411 | |
7412 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
7413 | *pointer_to_map = map; |
7414 | pointer_to_map = &map->next; | |
252b5132 | 7415 | |
bc67d8a6 | 7416 | if (isec < section_count) |
252b5132 RH |
7417 | { |
7418 | /* We still have not allocated all of the sections to | |
7419 | segments. Create a new segment here, initialise it | |
7420 | and carry on looping. */ | |
00bee008 | 7421 | amt = sizeof (struct elf_segment_map) - sizeof (asection *); |
446f7ed5 | 7422 | amt += section_count * sizeof (asection *); |
5964fc3a | 7423 | map = (struct elf_segment_map *) bfd_zalloc (obfd, amt); |
bc67d8a6 | 7424 | if (map == NULL) |
5ed6aba4 NC |
7425 | { |
7426 | free (sections); | |
0a1b45a2 | 7427 | return false; |
5ed6aba4 | 7428 | } |
252b5132 RH |
7429 | |
7430 | /* Initialise the fields of the segment map. Set the physical | |
7431 | physical address to the LMA of the first section that has | |
7432 | not yet been assigned. */ | |
0067a569 AM |
7433 | map->next = NULL; |
7434 | map->p_type = segment->p_type; | |
7435 | map->p_flags = segment->p_flags; | |
7436 | map->p_flags_valid = 1; | |
66631823 | 7437 | map->p_paddr = suggested_lma->lma * opb; |
5c44b38e | 7438 | map->p_paddr_valid = p_paddr_valid; |
bc67d8a6 | 7439 | map->includes_filehdr = 0; |
0067a569 | 7440 | map->includes_phdrs = 0; |
252b5132 | 7441 | } |
9984857c NC |
7442 | |
7443 | continue; | |
7444 | sorry: | |
7445 | bfd_set_error (bfd_error_sorry); | |
7446 | free (sections); | |
0a1b45a2 | 7447 | return false; |
252b5132 | 7448 | } |
bc67d8a6 | 7449 | while (isec < section_count); |
252b5132 RH |
7450 | |
7451 | free (sections); | |
7452 | } | |
7453 | ||
12bd6957 | 7454 | elf_seg_map (obfd) = map_first; |
bc67d8a6 NC |
7455 | |
7456 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 7457 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
7458 | the offset if necessary. */ |
7459 | if (phdr_adjust_seg != NULL) | |
7460 | { | |
7461 | unsigned int count; | |
c044fabd | 7462 | |
bc67d8a6 | 7463 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 7464 | count++; |
252b5132 | 7465 | |
bc67d8a6 NC |
7466 | if (count > phdr_adjust_num) |
7467 | phdr_adjust_seg->p_paddr | |
7468 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
9933dc52 AM |
7469 | |
7470 | for (map = map_first; map != NULL; map = map->next) | |
7471 | if (map->p_type == PT_PHDR) | |
7472 | { | |
7473 | bfd_vma adjust | |
7474 | = phdr_adjust_seg->includes_filehdr ? iehdr->e_ehsize : 0; | |
7475 | map->p_paddr = phdr_adjust_seg->p_paddr + adjust; | |
7476 | break; | |
7477 | } | |
bc67d8a6 | 7478 | } |
c044fabd | 7479 | |
bc67d8a6 | 7480 | #undef SEGMENT_END |
eecdbe52 | 7481 | #undef SECTION_SIZE |
bc67d8a6 NC |
7482 | #undef IS_CONTAINED_BY_VMA |
7483 | #undef IS_CONTAINED_BY_LMA | |
0efc80c8 | 7484 | #undef IS_NOTE |
252b5132 | 7485 | #undef IS_COREFILE_NOTE |
bc67d8a6 | 7486 | #undef IS_SOLARIS_PT_INTERP |
9f17e2a6 | 7487 | #undef IS_SECTION_IN_INPUT_SEGMENT |
bc67d8a6 NC |
7488 | #undef INCLUDE_SECTION_IN_SEGMENT |
7489 | #undef SEGMENT_AFTER_SEGMENT | |
7490 | #undef SEGMENT_OVERLAPS | |
0a1b45a2 | 7491 | return true; |
252b5132 RH |
7492 | } |
7493 | ||
84d1d650 L |
7494 | /* Copy ELF program header information. */ |
7495 | ||
0a1b45a2 | 7496 | static bool |
84d1d650 L |
7497 | copy_elf_program_header (bfd *ibfd, bfd *obfd) |
7498 | { | |
7499 | Elf_Internal_Ehdr *iehdr; | |
7500 | struct elf_segment_map *map; | |
7501 | struct elf_segment_map *map_first; | |
7502 | struct elf_segment_map **pointer_to_map; | |
7503 | Elf_Internal_Phdr *segment; | |
7504 | unsigned int i; | |
7505 | unsigned int num_segments; | |
0a1b45a2 AM |
7506 | bool phdr_included = false; |
7507 | bool p_paddr_valid; | |
502794d4 | 7508 | unsigned int opb = bfd_octets_per_byte (ibfd, NULL); |
84d1d650 L |
7509 | |
7510 | iehdr = elf_elfheader (ibfd); | |
7511 | ||
7512 | map_first = NULL; | |
7513 | pointer_to_map = &map_first; | |
7514 | ||
88967714 AM |
7515 | /* If all the segment p_paddr fields are zero, don't set |
7516 | map->p_paddr_valid. */ | |
0a1b45a2 | 7517 | p_paddr_valid = false; |
84d1d650 | 7518 | num_segments = elf_elfheader (ibfd)->e_phnum; |
88967714 AM |
7519 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
7520 | i < num_segments; | |
7521 | i++, segment++) | |
7522 | if (segment->p_paddr != 0) | |
7523 | { | |
0a1b45a2 | 7524 | p_paddr_valid = true; |
88967714 AM |
7525 | break; |
7526 | } | |
7527 | ||
84d1d650 L |
7528 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
7529 | i < num_segments; | |
7530 | i++, segment++) | |
7531 | { | |
7532 | asection *section; | |
7533 | unsigned int section_count; | |
986f0783 | 7534 | size_t amt; |
84d1d650 | 7535 | Elf_Internal_Shdr *this_hdr; |
53020534 | 7536 | asection *first_section = NULL; |
a76e6f2f | 7537 | asection *lowest_section; |
84d1d650 | 7538 | |
84d1d650 L |
7539 | /* Compute how many sections are in this segment. */ |
7540 | for (section = ibfd->sections, section_count = 0; | |
7541 | section != NULL; | |
7542 | section = section->next) | |
7543 | { | |
7544 | this_hdr = &(elf_section_data(section)->this_hdr); | |
f4638467 | 7545 | if (ELF_SECTION_IN_SEGMENT (this_hdr, segment)) |
3271a814 | 7546 | { |
a76e6f2f AM |
7547 | if (first_section == NULL) |
7548 | first_section = section; | |
3271a814 NS |
7549 | section_count++; |
7550 | } | |
84d1d650 L |
7551 | } |
7552 | ||
7553 | /* Allocate a segment map big enough to contain | |
7554 | all of the sections we have selected. */ | |
00bee008 | 7555 | amt = sizeof (struct elf_segment_map) - sizeof (asection *); |
986f0783 | 7556 | amt += section_count * sizeof (asection *); |
a50b1753 | 7557 | map = (struct elf_segment_map *) bfd_zalloc (obfd, amt); |
84d1d650 | 7558 | if (map == NULL) |
0a1b45a2 | 7559 | return false; |
84d1d650 L |
7560 | |
7561 | /* Initialize the fields of the output segment map with the | |
7562 | input segment. */ | |
7563 | map->next = NULL; | |
7564 | map->p_type = segment->p_type; | |
7565 | map->p_flags = segment->p_flags; | |
7566 | map->p_flags_valid = 1; | |
7567 | map->p_paddr = segment->p_paddr; | |
88967714 | 7568 | map->p_paddr_valid = p_paddr_valid; |
3f570048 AM |
7569 | map->p_align = segment->p_align; |
7570 | map->p_align_valid = 1; | |
3271a814 | 7571 | map->p_vaddr_offset = 0; |
84d1d650 | 7572 | |
04c3a755 NS |
7573 | if (map->p_type == PT_GNU_RELRO |
7574 | || map->p_type == PT_GNU_STACK) | |
b10a8ae0 L |
7575 | { |
7576 | /* The PT_GNU_RELRO segment may contain the first a few | |
7577 | bytes in the .got.plt section even if the whole .got.plt | |
7578 | section isn't in the PT_GNU_RELRO segment. We won't | |
04c3a755 NS |
7579 | change the size of the PT_GNU_RELRO segment. |
7580 | Similarly, PT_GNU_STACK size is significant on uclinux | |
7581 | systems. */ | |
9433b9b1 | 7582 | map->p_size = segment->p_memsz; |
b10a8ae0 L |
7583 | map->p_size_valid = 1; |
7584 | } | |
7585 | ||
84d1d650 L |
7586 | /* Determine if this segment contains the ELF file header |
7587 | and if it contains the program headers themselves. */ | |
7588 | map->includes_filehdr = (segment->p_offset == 0 | |
7589 | && segment->p_filesz >= iehdr->e_ehsize); | |
7590 | ||
7591 | map->includes_phdrs = 0; | |
7592 | if (! phdr_included || segment->p_type != PT_LOAD) | |
7593 | { | |
7594 | map->includes_phdrs = | |
7595 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
7596 | && (segment->p_offset + segment->p_filesz | |
7597 | >= ((bfd_vma) iehdr->e_phoff | |
7598 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
7599 | ||
7600 | if (segment->p_type == PT_LOAD && map->includes_phdrs) | |
0a1b45a2 | 7601 | phdr_included = true; |
84d1d650 L |
7602 | } |
7603 | ||
bbefd0a9 | 7604 | lowest_section = NULL; |
84d1d650 L |
7605 | if (section_count != 0) |
7606 | { | |
7607 | unsigned int isec = 0; | |
7608 | ||
53020534 | 7609 | for (section = first_section; |
84d1d650 L |
7610 | section != NULL; |
7611 | section = section->next) | |
7612 | { | |
7613 | this_hdr = &(elf_section_data(section)->this_hdr); | |
f4638467 | 7614 | if (ELF_SECTION_IN_SEGMENT (this_hdr, segment)) |
53020534 L |
7615 | { |
7616 | map->sections[isec++] = section->output_section; | |
a76e6f2f AM |
7617 | if ((section->flags & SEC_ALLOC) != 0) |
7618 | { | |
7619 | bfd_vma seg_off; | |
7620 | ||
bbefd0a9 AM |
7621 | if (lowest_section == NULL |
7622 | || section->lma < lowest_section->lma) | |
fb8a5684 AM |
7623 | lowest_section = section; |
7624 | ||
a76e6f2f AM |
7625 | /* Section lmas are set up from PT_LOAD header |
7626 | p_paddr in _bfd_elf_make_section_from_shdr. | |
7627 | If this header has a p_paddr that disagrees | |
7628 | with the section lma, flag the p_paddr as | |
7629 | invalid. */ | |
7630 | if ((section->flags & SEC_LOAD) != 0) | |
7631 | seg_off = this_hdr->sh_offset - segment->p_offset; | |
7632 | else | |
7633 | seg_off = this_hdr->sh_addr - segment->p_vaddr; | |
502794d4 | 7634 | if (section->lma * opb - segment->p_paddr != seg_off) |
0a1b45a2 | 7635 | map->p_paddr_valid = false; |
a76e6f2f | 7636 | } |
53020534 L |
7637 | if (isec == section_count) |
7638 | break; | |
7639 | } | |
84d1d650 L |
7640 | } |
7641 | } | |
7642 | ||
5d695627 | 7643 | if (section_count == 0) |
502794d4 | 7644 | map->p_vaddr_offset = segment->p_vaddr / opb; |
30fe1832 AM |
7645 | else if (map->p_paddr_valid) |
7646 | { | |
7647 | /* Account for padding before the first section in the segment. */ | |
7648 | bfd_vma hdr_size = 0; | |
7649 | if (map->includes_filehdr) | |
7650 | hdr_size = iehdr->e_ehsize; | |
7651 | if (map->includes_phdrs) | |
7652 | hdr_size += iehdr->e_phnum * iehdr->e_phentsize; | |
7653 | ||
502794d4 | 7654 | map->p_vaddr_offset = ((map->p_paddr + hdr_size) / opb |
30fe1832 AM |
7655 | - (lowest_section ? lowest_section->lma : 0)); |
7656 | } | |
a76e6f2f | 7657 | |
84d1d650 L |
7658 | map->count = section_count; |
7659 | *pointer_to_map = map; | |
7660 | pointer_to_map = &map->next; | |
7661 | } | |
7662 | ||
12bd6957 | 7663 | elf_seg_map (obfd) = map_first; |
0a1b45a2 | 7664 | return true; |
84d1d650 L |
7665 | } |
7666 | ||
7667 | /* Copy private BFD data. This copies or rewrites ELF program header | |
7668 | information. */ | |
7669 | ||
0a1b45a2 | 7670 | static bool |
84d1d650 L |
7671 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
7672 | { | |
c410035d AM |
7673 | bfd_vma maxpagesize; |
7674 | ||
84d1d650 L |
7675 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
7676 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
0a1b45a2 | 7677 | return true; |
84d1d650 L |
7678 | |
7679 | if (elf_tdata (ibfd)->phdr == NULL) | |
0a1b45a2 | 7680 | return true; |
84d1d650 L |
7681 | |
7682 | if (ibfd->xvec == obfd->xvec) | |
7683 | { | |
cb3ff1e5 NC |
7684 | /* Check to see if any sections in the input BFD |
7685 | covered by ELF program header have changed. */ | |
d55ce4e2 | 7686 | Elf_Internal_Phdr *segment; |
84d1d650 L |
7687 | asection *section, *osec; |
7688 | unsigned int i, num_segments; | |
7689 | Elf_Internal_Shdr *this_hdr; | |
147d51c2 L |
7690 | const struct elf_backend_data *bed; |
7691 | ||
7692 | bed = get_elf_backend_data (ibfd); | |
7693 | ||
7694 | /* Regenerate the segment map if p_paddr is set to 0. */ | |
7695 | if (bed->want_p_paddr_set_to_zero) | |
7696 | goto rewrite; | |
84d1d650 L |
7697 | |
7698 | /* Initialize the segment mark field. */ | |
7699 | for (section = obfd->sections; section != NULL; | |
7700 | section = section->next) | |
0a1b45a2 | 7701 | section->segment_mark = false; |
84d1d650 L |
7702 | |
7703 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
7704 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
7705 | i < num_segments; | |
7706 | i++, segment++) | |
7707 | { | |
5f6999aa NC |
7708 | /* PR binutils/3535. The Solaris linker always sets the p_paddr |
7709 | and p_memsz fields of special segments (DYNAMIC, INTERP) to 0 | |
7710 | which severly confuses things, so always regenerate the segment | |
7711 | map in this case. */ | |
7712 | if (segment->p_paddr == 0 | |
7713 | && segment->p_memsz == 0 | |
7714 | && (segment->p_type == PT_INTERP || segment->p_type == PT_DYNAMIC)) | |
cb3ff1e5 | 7715 | goto rewrite; |
5f6999aa | 7716 | |
84d1d650 L |
7717 | for (section = ibfd->sections; |
7718 | section != NULL; section = section->next) | |
7719 | { | |
7720 | /* We mark the output section so that we know it comes | |
7721 | from the input BFD. */ | |
7722 | osec = section->output_section; | |
7723 | if (osec) | |
0a1b45a2 | 7724 | osec->segment_mark = true; |
84d1d650 L |
7725 | |
7726 | /* Check if this section is covered by the segment. */ | |
7727 | this_hdr = &(elf_section_data(section)->this_hdr); | |
f4638467 | 7728 | if (ELF_SECTION_IN_SEGMENT (this_hdr, segment)) |
84d1d650 L |
7729 | { |
7730 | /* FIXME: Check if its output section is changed or | |
7731 | removed. What else do we need to check? */ | |
7732 | if (osec == NULL | |
7733 | || section->flags != osec->flags | |
7734 | || section->lma != osec->lma | |
7735 | || section->vma != osec->vma | |
7736 | || section->size != osec->size | |
7737 | || section->rawsize != osec->rawsize | |
7738 | || section->alignment_power != osec->alignment_power) | |
7739 | goto rewrite; | |
7740 | } | |
7741 | } | |
7742 | } | |
7743 | ||
cb3ff1e5 | 7744 | /* Check to see if any output section do not come from the |
84d1d650 L |
7745 | input BFD. */ |
7746 | for (section = obfd->sections; section != NULL; | |
7747 | section = section->next) | |
7748 | { | |
535b785f | 7749 | if (!section->segment_mark) |
84d1d650 L |
7750 | goto rewrite; |
7751 | else | |
0a1b45a2 | 7752 | section->segment_mark = false; |
84d1d650 L |
7753 | } |
7754 | ||
7755 | return copy_elf_program_header (ibfd, obfd); | |
7756 | } | |
7757 | ||
dc1e8a47 | 7758 | rewrite: |
c410035d | 7759 | maxpagesize = 0; |
f1d85785 L |
7760 | if (ibfd->xvec == obfd->xvec) |
7761 | { | |
7762 | /* When rewriting program header, set the output maxpagesize to | |
7763 | the maximum alignment of input PT_LOAD segments. */ | |
7764 | Elf_Internal_Phdr *segment; | |
7765 | unsigned int i; | |
7766 | unsigned int num_segments = elf_elfheader (ibfd)->e_phnum; | |
f1d85785 L |
7767 | |
7768 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
7769 | i < num_segments; | |
7770 | i++, segment++) | |
7771 | if (segment->p_type == PT_LOAD | |
7772 | && maxpagesize < segment->p_align) | |
c86934ce NC |
7773 | { |
7774 | /* PR 17512: file: f17299af. */ | |
7775 | if (segment->p_align > (bfd_vma) 1 << ((sizeof (bfd_vma) * 8) - 2)) | |
695344c0 | 7776 | /* xgettext:c-format */ |
2dcf00ce AM |
7777 | _bfd_error_handler (_("%pB: warning: segment alignment of %#" |
7778 | PRIx64 " is too large"), | |
7779 | ibfd, (uint64_t) segment->p_align); | |
c86934ce NC |
7780 | else |
7781 | maxpagesize = segment->p_align; | |
7782 | } | |
f1d85785 | 7783 | } |
c410035d AM |
7784 | if (maxpagesize == 0) |
7785 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; | |
f1d85785 | 7786 | |
c410035d | 7787 | return rewrite_elf_program_header (ibfd, obfd, maxpagesize); |
84d1d650 L |
7788 | } |
7789 | ||
ccd2ec6a L |
7790 | /* Initialize private output section information from input section. */ |
7791 | ||
0a1b45a2 | 7792 | bool |
ccd2ec6a L |
7793 | _bfd_elf_init_private_section_data (bfd *ibfd, |
7794 | asection *isec, | |
7795 | bfd *obfd, | |
7796 | asection *osec, | |
7797 | struct bfd_link_info *link_info) | |
7798 | ||
7799 | { | |
7800 | Elf_Internal_Shdr *ihdr, *ohdr; | |
0a1b45a2 AM |
7801 | bool final_link = (link_info != NULL |
7802 | && !bfd_link_relocatable (link_info)); | |
ccd2ec6a L |
7803 | |
7804 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
7805 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
0a1b45a2 | 7806 | return true; |
ccd2ec6a | 7807 | |
ba85c43e NC |
7808 | BFD_ASSERT (elf_section_data (osec) != NULL); |
7809 | ||
8c803a2d AM |
7810 | /* If this is a known ABI section, ELF section type and flags may |
7811 | have been set up when OSEC was created. For normal sections we | |
7812 | allow the user to override the type and flags other than | |
7813 | SHF_MASKOS and SHF_MASKPROC. */ | |
7814 | if (elf_section_type (osec) == SHT_PROGBITS | |
7815 | || elf_section_type (osec) == SHT_NOTE | |
7816 | || elf_section_type (osec) == SHT_NOBITS) | |
7817 | elf_section_type (osec) = SHT_NULL; | |
7818 | /* For objcopy and relocatable link, copy the ELF section type from | |
7819 | the input file if the BFD section flags are the same. (If they | |
7820 | are different the user may be doing something like | |
7821 | "objcopy --set-section-flags .text=alloc,data".) For a final | |
7822 | link allow some flags that the linker clears to differ. */ | |
42bb2e33 | 7823 | if (elf_section_type (osec) == SHT_NULL |
dfa7b0b8 AM |
7824 | && (osec->flags == isec->flags |
7825 | || (final_link | |
7826 | && ((osec->flags ^ isec->flags) | |
0814be7d | 7827 | & ~(SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_RELOC)) == 0))) |
42bb2e33 | 7828 | elf_section_type (osec) = elf_section_type (isec); |
d270463e L |
7829 | |
7830 | /* FIXME: Is this correct for all OS/PROC specific flags? */ | |
8c803a2d AM |
7831 | elf_section_flags (osec) = (elf_section_flags (isec) |
7832 | & (SHF_MASKOS | SHF_MASKPROC)); | |
ccd2ec6a | 7833 | |
a91e1603 | 7834 | /* Copy sh_info from input for mbind section. */ |
df3a023b AM |
7835 | if ((elf_tdata (ibfd)->has_gnu_osabi & elf_gnu_osabi_mbind) != 0 |
7836 | && elf_section_flags (isec) & SHF_GNU_MBIND) | |
a91e1603 L |
7837 | elf_section_data (osec)->this_hdr.sh_info |
7838 | = elf_section_data (isec)->this_hdr.sh_info; | |
7839 | ||
ccd2ec6a L |
7840 | /* Set things up for objcopy and relocatable link. The output |
7841 | SHT_GROUP section will have its elf_next_in_group pointing back | |
7842 | to the input group members. Ignore linker created group section. | |
7843 | See elfNN_ia64_object_p in elfxx-ia64.c. */ | |
7bdf4127 AB |
7844 | if ((link_info == NULL |
7845 | || !link_info->resolve_section_groups) | |
7846 | && (elf_sec_group (isec) == NULL | |
7847 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0)) | |
ccd2ec6a | 7848 | { |
7bdf4127 AB |
7849 | if (elf_section_flags (isec) & SHF_GROUP) |
7850 | elf_section_flags (osec) |= SHF_GROUP; | |
7851 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
7852 | elf_section_data (osec)->group = elf_section_data (isec)->group; | |
ccd2ec6a L |
7853 | } |
7854 | ||
7bdf4127 AB |
7855 | /* If not decompress, preserve SHF_COMPRESSED. */ |
7856 | if (!final_link && (ibfd->flags & BFD_DECOMPRESS) == 0) | |
7857 | elf_section_flags (osec) |= (elf_section_flags (isec) | |
7858 | & SHF_COMPRESSED); | |
7859 | ||
ccd2ec6a L |
7860 | ihdr = &elf_section_data (isec)->this_hdr; |
7861 | ||
7862 | /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We | |
7863 | don't use the output section of the linked-to section since it | |
7864 | may be NULL at this point. */ | |
7865 | if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0) | |
7866 | { | |
7867 | ohdr = &elf_section_data (osec)->this_hdr; | |
7868 | ohdr->sh_flags |= SHF_LINK_ORDER; | |
7869 | elf_linked_to_section (osec) = elf_linked_to_section (isec); | |
7870 | } | |
7871 | ||
7872 | osec->use_rela_p = isec->use_rela_p; | |
7873 | ||
0a1b45a2 | 7874 | return true; |
ccd2ec6a L |
7875 | } |
7876 | ||
252b5132 RH |
7877 | /* Copy private section information. This copies over the entsize |
7878 | field, and sometimes the info field. */ | |
7879 | ||
0a1b45a2 | 7880 | bool |
217aa764 AM |
7881 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
7882 | asection *isec, | |
7883 | bfd *obfd, | |
7884 | asection *osec) | |
252b5132 RH |
7885 | { |
7886 | Elf_Internal_Shdr *ihdr, *ohdr; | |
7887 | ||
7888 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
7889 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
0a1b45a2 | 7890 | return true; |
252b5132 | 7891 | |
252b5132 RH |
7892 | ihdr = &elf_section_data (isec)->this_hdr; |
7893 | ohdr = &elf_section_data (osec)->this_hdr; | |
7894 | ||
7895 | ohdr->sh_entsize = ihdr->sh_entsize; | |
7896 | ||
7897 | if (ihdr->sh_type == SHT_SYMTAB | |
7898 | || ihdr->sh_type == SHT_DYNSYM | |
7899 | || ihdr->sh_type == SHT_GNU_verneed | |
7900 | || ihdr->sh_type == SHT_GNU_verdef) | |
7901 | ohdr->sh_info = ihdr->sh_info; | |
7902 | ||
ccd2ec6a L |
7903 | return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec, |
7904 | NULL); | |
252b5132 RH |
7905 | } |
7906 | ||
d0bf826b AM |
7907 | /* Look at all the SHT_GROUP sections in IBFD, making any adjustments |
7908 | necessary if we are removing either the SHT_GROUP section or any of | |
7909 | the group member sections. DISCARDED is the value that a section's | |
7910 | output_section has if the section will be discarded, NULL when this | |
7911 | function is called from objcopy, bfd_abs_section_ptr when called | |
7912 | from the linker. */ | |
80fccad2 | 7913 | |
0a1b45a2 | 7914 | bool |
d0bf826b | 7915 | _bfd_elf_fixup_group_sections (bfd *ibfd, asection *discarded) |
80fccad2 | 7916 | { |
30288845 AM |
7917 | asection *isec; |
7918 | ||
30288845 | 7919 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) |
415f38a6 | 7920 | if (elf_section_type (isec) == SHT_GROUP) |
30288845 AM |
7921 | { |
7922 | asection *first = elf_next_in_group (isec); | |
7923 | asection *s = first; | |
d0bf826b AM |
7924 | bfd_size_type removed = 0; |
7925 | ||
30288845 AM |
7926 | while (s != NULL) |
7927 | { | |
415f38a6 AM |
7928 | /* If this member section is being output but the |
7929 | SHT_GROUP section is not, then clear the group info | |
7930 | set up by _bfd_elf_copy_private_section_data. */ | |
d0bf826b AM |
7931 | if (s->output_section != discarded |
7932 | && isec->output_section == discarded) | |
30288845 AM |
7933 | { |
7934 | elf_section_flags (s->output_section) &= ~SHF_GROUP; | |
7935 | elf_group_name (s->output_section) = NULL; | |
7936 | } | |
3349112e | 7937 | else |
6e5e9d58 AM |
7938 | { |
7939 | struct bfd_elf_section_data *elf_sec = elf_section_data (s); | |
3349112e L |
7940 | if (s->output_section == discarded |
7941 | && isec->output_section != discarded) | |
7942 | { | |
7943 | /* Conversely, if the member section is not being | |
7944 | output but the SHT_GROUP section is, then adjust | |
7945 | its size. */ | |
7946 | removed += 4; | |
7947 | if (elf_sec->rel.hdr != NULL | |
7948 | && (elf_sec->rel.hdr->sh_flags & SHF_GROUP) != 0) | |
7949 | removed += 4; | |
7950 | if (elf_sec->rela.hdr != NULL | |
7951 | && (elf_sec->rela.hdr->sh_flags & SHF_GROUP) != 0) | |
7952 | removed += 4; | |
7953 | } | |
7954 | else | |
7955 | { | |
7956 | /* Also adjust for zero-sized relocation member | |
7957 | section. */ | |
7958 | if (elf_sec->rel.hdr != NULL | |
7959 | && elf_sec->rel.hdr->sh_size == 0) | |
7960 | removed += 4; | |
7961 | if (elf_sec->rela.hdr != NULL | |
7962 | && elf_sec->rela.hdr->sh_size == 0) | |
7963 | removed += 4; | |
7964 | } | |
6e5e9d58 | 7965 | } |
30288845 AM |
7966 | s = elf_next_in_group (s); |
7967 | if (s == first) | |
7968 | break; | |
7969 | } | |
d0bf826b AM |
7970 | if (removed != 0) |
7971 | { | |
7972 | if (discarded != NULL) | |
7973 | { | |
7974 | /* If we've been called for ld -r, then we need to | |
6e5e9d58 | 7975 | adjust the input section size. */ |
d0bf826b AM |
7976 | if (isec->rawsize == 0) |
7977 | isec->rawsize = isec->size; | |
7978 | isec->size = isec->rawsize - removed; | |
6e5e9d58 AM |
7979 | if (isec->size <= 4) |
7980 | { | |
7981 | isec->size = 0; | |
7982 | isec->flags |= SEC_EXCLUDE; | |
7983 | } | |
d0bf826b AM |
7984 | } |
7985 | else | |
7986 | { | |
7987 | /* Adjust the output section size when called from | |
7988 | objcopy. */ | |
7989 | isec->output_section->size -= removed; | |
6e5e9d58 AM |
7990 | if (isec->output_section->size <= 4) |
7991 | { | |
7992 | isec->output_section->size = 0; | |
7993 | isec->output_section->flags |= SEC_EXCLUDE; | |
7994 | } | |
d0bf826b AM |
7995 | } |
7996 | } | |
30288845 AM |
7997 | } |
7998 | ||
0a1b45a2 | 7999 | return true; |
80fccad2 BW |
8000 | } |
8001 | ||
d0bf826b AM |
8002 | /* Copy private header information. */ |
8003 | ||
0a1b45a2 | 8004 | bool |
d0bf826b AM |
8005 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) |
8006 | { | |
8007 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
8008 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
0a1b45a2 | 8009 | return true; |
d0bf826b AM |
8010 | |
8011 | /* Copy over private BFD data if it has not already been copied. | |
8012 | This must be done here, rather than in the copy_private_bfd_data | |
8013 | entry point, because the latter is called after the section | |
8014 | contents have been set, which means that the program headers have | |
8015 | already been worked out. */ | |
12bd6957 | 8016 | if (elf_seg_map (obfd) == NULL && elf_tdata (ibfd)->phdr != NULL) |
d0bf826b AM |
8017 | { |
8018 | if (! copy_private_bfd_data (ibfd, obfd)) | |
0a1b45a2 | 8019 | return false; |
d0bf826b AM |
8020 | } |
8021 | ||
8022 | return _bfd_elf_fixup_group_sections (ibfd, NULL); | |
8023 | } | |
8024 | ||
252b5132 RH |
8025 | /* Copy private symbol information. If this symbol is in a section |
8026 | which we did not map into a BFD section, try to map the section | |
8027 | index correctly. We use special macro definitions for the mapped | |
8028 | section indices; these definitions are interpreted by the | |
8029 | swap_out_syms function. */ | |
8030 | ||
9ad5cbcf AM |
8031 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
8032 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
8033 | #define MAP_STRTAB (SHN_HIOS + 3) | |
8034 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
8035 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 8036 | |
0a1b45a2 | 8037 | bool |
217aa764 AM |
8038 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
8039 | asymbol *isymarg, | |
8040 | bfd *obfd, | |
8041 | asymbol *osymarg) | |
252b5132 RH |
8042 | { |
8043 | elf_symbol_type *isym, *osym; | |
8044 | ||
8045 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
8046 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
0a1b45a2 | 8047 | return true; |
252b5132 | 8048 | |
c1229f84 AM |
8049 | isym = elf_symbol_from (isymarg); |
8050 | osym = elf_symbol_from (osymarg); | |
252b5132 RH |
8051 | |
8052 | if (isym != NULL | |
8424d8f5 | 8053 | && isym->internal_elf_sym.st_shndx != 0 |
252b5132 RH |
8054 | && osym != NULL |
8055 | && bfd_is_abs_section (isym->symbol.section)) | |
8056 | { | |
8057 | unsigned int shndx; | |
8058 | ||
8059 | shndx = isym->internal_elf_sym.st_shndx; | |
8060 | if (shndx == elf_onesymtab (ibfd)) | |
8061 | shndx = MAP_ONESYMTAB; | |
8062 | else if (shndx == elf_dynsymtab (ibfd)) | |
8063 | shndx = MAP_DYNSYMTAB; | |
12bd6957 | 8064 | else if (shndx == elf_strtab_sec (ibfd)) |
252b5132 | 8065 | shndx = MAP_STRTAB; |
12bd6957 | 8066 | else if (shndx == elf_shstrtab_sec (ibfd)) |
252b5132 | 8067 | shndx = MAP_SHSTRTAB; |
6a40cf0c | 8068 | else if (find_section_in_list (shndx, elf_symtab_shndx_list (ibfd))) |
9ad5cbcf | 8069 | shndx = MAP_SYM_SHNDX; |
252b5132 RH |
8070 | osym->internal_elf_sym.st_shndx = shndx; |
8071 | } | |
8072 | ||
0a1b45a2 | 8073 | return true; |
252b5132 RH |
8074 | } |
8075 | ||
8076 | /* Swap out the symbols. */ | |
8077 | ||
0a1b45a2 | 8078 | static bool |
217aa764 | 8079 | swap_out_syms (bfd *abfd, |
ef10c3ac | 8080 | struct elf_strtab_hash **sttp, |
3d16b64e NA |
8081 | int relocatable_p, |
8082 | struct bfd_link_info *info) | |
252b5132 | 8083 | { |
9c5bfbb7 | 8084 | const struct elf_backend_data *bed; |
1f4361a7 | 8085 | unsigned int symcount; |
079e9a2f | 8086 | asymbol **syms; |
ef10c3ac | 8087 | struct elf_strtab_hash *stt; |
079e9a2f | 8088 | Elf_Internal_Shdr *symtab_hdr; |
9ad5cbcf | 8089 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 8090 | Elf_Internal_Shdr *symstrtab_hdr; |
ef10c3ac | 8091 | struct elf_sym_strtab *symstrtab; |
f075ee0c AM |
8092 | bfd_byte *outbound_syms; |
8093 | bfd_byte *outbound_shndx; | |
ef10c3ac L |
8094 | unsigned long outbound_syms_index; |
8095 | unsigned long outbound_shndx_index; | |
1f4361a7 | 8096 | unsigned int idx; |
12bd6957 | 8097 | unsigned int num_locals; |
1f4361a7 | 8098 | size_t amt; |
0a1b45a2 | 8099 | bool name_local_sections; |
252b5132 | 8100 | |
12bd6957 | 8101 | if (!elf_map_symbols (abfd, &num_locals)) |
0a1b45a2 | 8102 | return false; |
252b5132 | 8103 | |
c044fabd | 8104 | /* Dump out the symtabs. */ |
ef10c3ac | 8105 | stt = _bfd_elf_strtab_init (); |
079e9a2f | 8106 | if (stt == NULL) |
0a1b45a2 | 8107 | return false; |
252b5132 | 8108 | |
079e9a2f AM |
8109 | bed = get_elf_backend_data (abfd); |
8110 | symcount = bfd_get_symcount (abfd); | |
8111 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8112 | symtab_hdr->sh_type = SHT_SYMTAB; | |
8113 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
8114 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
12bd6957 | 8115 | symtab_hdr->sh_info = num_locals + 1; |
72de5009 | 8116 | symtab_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align; |
079e9a2f AM |
8117 | |
8118 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
8119 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
8120 | ||
ef10c3ac | 8121 | /* Allocate buffer to swap out the .strtab section. */ |
1f4361a7 AM |
8122 | if (_bfd_mul_overflow (symcount + 1, sizeof (*symstrtab), &amt) |
8123 | || (symstrtab = (struct elf_sym_strtab *) bfd_malloc (amt)) == NULL) | |
ef10c3ac | 8124 | { |
1f4361a7 | 8125 | bfd_set_error (bfd_error_no_memory); |
ef10c3ac | 8126 | _bfd_elf_strtab_free (stt); |
0a1b45a2 | 8127 | return false; |
ef10c3ac L |
8128 | } |
8129 | ||
1f4361a7 AM |
8130 | if (_bfd_mul_overflow (symcount + 1, bed->s->sizeof_sym, &amt) |
8131 | || (outbound_syms = (bfd_byte *) bfd_alloc (abfd, amt)) == NULL) | |
5ed6aba4 | 8132 | { |
1f4361a7 AM |
8133 | error_no_mem: |
8134 | bfd_set_error (bfd_error_no_memory); | |
8135 | error_return: | |
ef10c3ac | 8136 | free (symstrtab); |
1f4361a7 | 8137 | _bfd_elf_strtab_free (stt); |
0a1b45a2 | 8138 | return false; |
5ed6aba4 | 8139 | } |
217aa764 | 8140 | symtab_hdr->contents = outbound_syms; |
ef10c3ac | 8141 | outbound_syms_index = 0; |
252b5132 | 8142 | |
9ad5cbcf | 8143 | outbound_shndx = NULL; |
ef10c3ac | 8144 | outbound_shndx_index = 0; |
6a40cf0c NC |
8145 | |
8146 | if (elf_symtab_shndx_list (abfd)) | |
9ad5cbcf | 8147 | { |
6a40cf0c NC |
8148 | symtab_shndx_hdr = & elf_symtab_shndx_list (abfd)->hdr; |
8149 | if (symtab_shndx_hdr->sh_name != 0) | |
8150 | { | |
1f4361a7 AM |
8151 | if (_bfd_mul_overflow (symcount + 1, |
8152 | sizeof (Elf_External_Sym_Shndx), &amt)) | |
8153 | goto error_no_mem; | |
8154 | outbound_shndx = (bfd_byte *) bfd_zalloc (abfd, amt); | |
6a40cf0c NC |
8155 | if (outbound_shndx == NULL) |
8156 | goto error_return; | |
5ed6aba4 | 8157 | |
6a40cf0c NC |
8158 | symtab_shndx_hdr->contents = outbound_shndx; |
8159 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
8160 | symtab_shndx_hdr->sh_size = amt; | |
8161 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
8162 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
8163 | } | |
8164 | /* FIXME: What about any other headers in the list ? */ | |
9ad5cbcf AM |
8165 | } |
8166 | ||
589e6347 | 8167 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
8168 | { |
8169 | /* Fill in zeroth symbol and swap it out. */ | |
8170 | Elf_Internal_Sym sym; | |
8171 | sym.st_name = 0; | |
8172 | sym.st_value = 0; | |
8173 | sym.st_size = 0; | |
8174 | sym.st_info = 0; | |
8175 | sym.st_other = 0; | |
8176 | sym.st_shndx = SHN_UNDEF; | |
35fc36a8 | 8177 | sym.st_target_internal = 0; |
ef10c3ac L |
8178 | symstrtab[0].sym = sym; |
8179 | symstrtab[0].dest_index = outbound_syms_index; | |
8180 | symstrtab[0].destshndx_index = outbound_shndx_index; | |
8181 | outbound_syms_index++; | |
9ad5cbcf | 8182 | if (outbound_shndx != NULL) |
ef10c3ac | 8183 | outbound_shndx_index++; |
079e9a2f | 8184 | } |
252b5132 | 8185 | |
174fd7f9 RS |
8186 | name_local_sections |
8187 | = (bed->elf_backend_name_local_section_symbols | |
8188 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
8189 | ||
079e9a2f | 8190 | syms = bfd_get_outsymbols (abfd); |
ef10c3ac | 8191 | for (idx = 0; idx < symcount;) |
252b5132 | 8192 | { |
252b5132 | 8193 | Elf_Internal_Sym sym; |
079e9a2f AM |
8194 | bfd_vma value = syms[idx]->value; |
8195 | elf_symbol_type *type_ptr; | |
8196 | flagword flags = syms[idx]->flags; | |
8197 | int type; | |
252b5132 | 8198 | |
174fd7f9 RS |
8199 | if (!name_local_sections |
8200 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
8201 | { |
8202 | /* Local section symbols have no name. */ | |
ef10c3ac | 8203 | sym.st_name = (unsigned long) -1; |
079e9a2f AM |
8204 | } |
8205 | else | |
8206 | { | |
ef10c3ac L |
8207 | /* Call _bfd_elf_strtab_offset after _bfd_elf_strtab_finalize |
8208 | to get the final offset for st_name. */ | |
8209 | sym.st_name | |
8210 | = (unsigned long) _bfd_elf_strtab_add (stt, syms[idx]->name, | |
0a1b45a2 | 8211 | false); |
079e9a2f | 8212 | if (sym.st_name == (unsigned long) -1) |
ef10c3ac | 8213 | goto error_return; |
079e9a2f | 8214 | } |
252b5132 | 8215 | |
c1229f84 | 8216 | type_ptr = elf_symbol_from (syms[idx]); |
252b5132 | 8217 | |
079e9a2f AM |
8218 | if ((flags & BSF_SECTION_SYM) == 0 |
8219 | && bfd_is_com_section (syms[idx]->section)) | |
8220 | { | |
8221 | /* ELF common symbols put the alignment into the `value' field, | |
8222 | and the size into the `size' field. This is backwards from | |
8223 | how BFD handles it, so reverse it here. */ | |
8224 | sym.st_size = value; | |
8225 | if (type_ptr == NULL | |
8226 | || type_ptr->internal_elf_sym.st_value == 0) | |
8227 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
8228 | else | |
8229 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
8230 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
8231 | (abfd, syms[idx]->section); | |
8232 | } | |
8233 | else | |
8234 | { | |
8235 | asection *sec = syms[idx]->section; | |
cb33740c | 8236 | unsigned int shndx; |
252b5132 | 8237 | |
079e9a2f AM |
8238 | if (sec->output_section) |
8239 | { | |
8240 | value += sec->output_offset; | |
8241 | sec = sec->output_section; | |
8242 | } | |
589e6347 | 8243 | |
079e9a2f AM |
8244 | /* Don't add in the section vma for relocatable output. */ |
8245 | if (! relocatable_p) | |
8246 | value += sec->vma; | |
8247 | sym.st_value = value; | |
8248 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
8249 | ||
8250 | if (bfd_is_abs_section (sec) | |
8251 | && type_ptr != NULL | |
8252 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
8253 | { | |
8254 | /* This symbol is in a real ELF section which we did | |
8255 | not create as a BFD section. Undo the mapping done | |
8256 | by copy_private_symbol_data. */ | |
8257 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
8258 | switch (shndx) | |
8259 | { | |
8260 | case MAP_ONESYMTAB: | |
8261 | shndx = elf_onesymtab (abfd); | |
8262 | break; | |
8263 | case MAP_DYNSYMTAB: | |
8264 | shndx = elf_dynsymtab (abfd); | |
8265 | break; | |
8266 | case MAP_STRTAB: | |
12bd6957 | 8267 | shndx = elf_strtab_sec (abfd); |
079e9a2f AM |
8268 | break; |
8269 | case MAP_SHSTRTAB: | |
12bd6957 | 8270 | shndx = elf_shstrtab_sec (abfd); |
079e9a2f | 8271 | break; |
9ad5cbcf | 8272 | case MAP_SYM_SHNDX: |
6a40cf0c NC |
8273 | if (elf_symtab_shndx_list (abfd)) |
8274 | shndx = elf_symtab_shndx_list (abfd)->ndx; | |
9ad5cbcf | 8275 | break; |
00e49dff NC |
8276 | case SHN_COMMON: |
8277 | case SHN_ABS: | |
15bc576a | 8278 | shndx = SHN_ABS; |
079e9a2f | 8279 | break; |
00e49dff NC |
8280 | default: |
8281 | if (shndx >= SHN_LOPROC && shndx <= SHN_HIOS) | |
8282 | { | |
8283 | if (bed->symbol_section_index) | |
8284 | shndx = bed->symbol_section_index (abfd, type_ptr); | |
8285 | /* Otherwise just leave the index alone. */ | |
8286 | } | |
8287 | else | |
8288 | { | |
8289 | if (shndx > SHN_HIOS && shndx < SHN_HIRESERVE) | |
8290 | _bfd_error_handler (_("%pB: \ | |
8291 | Unable to handle section index %x in ELF symbol. Using ABS instead."), | |
8292 | abfd, shndx); | |
8293 | shndx = SHN_ABS; | |
8294 | } | |
8295 | break; | |
079e9a2f AM |
8296 | } |
8297 | } | |
8298 | else | |
8299 | { | |
8300 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 8301 | |
cb33740c | 8302 | if (shndx == SHN_BAD) |
079e9a2f AM |
8303 | { |
8304 | asection *sec2; | |
8305 | ||
8306 | /* Writing this would be a hell of a lot easier if | |
8307 | we had some decent documentation on bfd, and | |
8308 | knew what to expect of the library, and what to | |
8309 | demand of applications. For example, it | |
8310 | appears that `objcopy' might not set the | |
8311 | section of a symbol to be a section that is | |
8312 | actually in the output file. */ | |
8313 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
5df1bc57 AM |
8314 | if (sec2 != NULL) |
8315 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); | |
8316 | if (shndx == SHN_BAD) | |
589e6347 | 8317 | { |
695344c0 | 8318 | /* xgettext:c-format */ |
9793eb77 AM |
8319 | _bfd_error_handler |
8320 | (_("unable to find equivalent output section" | |
8321 | " for symbol '%s' from section '%s'"), | |
8322 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
8323 | sec->name); | |
811072d8 | 8324 | bfd_set_error (bfd_error_invalid_operation); |
ef10c3ac | 8325 | goto error_return; |
589e6347 | 8326 | } |
079e9a2f AM |
8327 | } |
8328 | } | |
252b5132 | 8329 | |
079e9a2f AM |
8330 | sym.st_shndx = shndx; |
8331 | } | |
252b5132 | 8332 | |
13ae64f3 JJ |
8333 | if ((flags & BSF_THREAD_LOCAL) != 0) |
8334 | type = STT_TLS; | |
d8045f23 NC |
8335 | else if ((flags & BSF_GNU_INDIRECT_FUNCTION) != 0) |
8336 | type = STT_GNU_IFUNC; | |
13ae64f3 | 8337 | else if ((flags & BSF_FUNCTION) != 0) |
079e9a2f AM |
8338 | type = STT_FUNC; |
8339 | else if ((flags & BSF_OBJECT) != 0) | |
8340 | type = STT_OBJECT; | |
d9352518 DB |
8341 | else if ((flags & BSF_RELC) != 0) |
8342 | type = STT_RELC; | |
8343 | else if ((flags & BSF_SRELC) != 0) | |
8344 | type = STT_SRELC; | |
079e9a2f AM |
8345 | else |
8346 | type = STT_NOTYPE; | |
252b5132 | 8347 | |
13ae64f3 JJ |
8348 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
8349 | type = STT_TLS; | |
8350 | ||
589e6347 | 8351 | /* Processor-specific types. */ |
079e9a2f AM |
8352 | if (type_ptr != NULL |
8353 | && bed->elf_backend_get_symbol_type) | |
8354 | type = ((*bed->elf_backend_get_symbol_type) | |
8355 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 8356 | |
079e9a2f AM |
8357 | if (flags & BSF_SECTION_SYM) |
8358 | { | |
8359 | if (flags & BSF_GLOBAL) | |
8360 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
8361 | else | |
8362 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
8363 | } | |
8364 | else if (bfd_is_com_section (syms[idx]->section)) | |
0a40daed | 8365 | { |
b8871f35 L |
8366 | if (type != STT_TLS) |
8367 | { | |
8368 | if ((abfd->flags & BFD_CONVERT_ELF_COMMON)) | |
8369 | type = ((abfd->flags & BFD_USE_ELF_STT_COMMON) | |
8370 | ? STT_COMMON : STT_OBJECT); | |
8371 | else | |
8372 | type = ((flags & BSF_ELF_COMMON) != 0 | |
8373 | ? STT_COMMON : STT_OBJECT); | |
8374 | } | |
8375 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
0a40daed | 8376 | } |
079e9a2f AM |
8377 | else if (bfd_is_und_section (syms[idx]->section)) |
8378 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
8379 | ? STB_WEAK | |
8380 | : STB_GLOBAL), | |
8381 | type); | |
8382 | else if (flags & BSF_FILE) | |
8383 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
8384 | else | |
8385 | { | |
8386 | int bind = STB_LOCAL; | |
252b5132 | 8387 | |
079e9a2f AM |
8388 | if (flags & BSF_LOCAL) |
8389 | bind = STB_LOCAL; | |
3e7a7d11 NC |
8390 | else if (flags & BSF_GNU_UNIQUE) |
8391 | bind = STB_GNU_UNIQUE; | |
079e9a2f AM |
8392 | else if (flags & BSF_WEAK) |
8393 | bind = STB_WEAK; | |
8394 | else if (flags & BSF_GLOBAL) | |
8395 | bind = STB_GLOBAL; | |
252b5132 | 8396 | |
079e9a2f AM |
8397 | sym.st_info = ELF_ST_INFO (bind, type); |
8398 | } | |
252b5132 | 8399 | |
079e9a2f | 8400 | if (type_ptr != NULL) |
35fc36a8 RS |
8401 | { |
8402 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
8403 | sym.st_target_internal | |
8404 | = type_ptr->internal_elf_sym.st_target_internal; | |
8405 | } | |
079e9a2f | 8406 | else |
35fc36a8 RS |
8407 | { |
8408 | sym.st_other = 0; | |
8409 | sym.st_target_internal = 0; | |
8410 | } | |
252b5132 | 8411 | |
ef10c3ac L |
8412 | idx++; |
8413 | symstrtab[idx].sym = sym; | |
8414 | symstrtab[idx].dest_index = outbound_syms_index; | |
8415 | symstrtab[idx].destshndx_index = outbound_shndx_index; | |
8416 | ||
8417 | outbound_syms_index++; | |
9ad5cbcf | 8418 | if (outbound_shndx != NULL) |
ef10c3ac L |
8419 | outbound_shndx_index++; |
8420 | } | |
8421 | ||
8422 | /* Finalize the .strtab section. */ | |
8423 | _bfd_elf_strtab_finalize (stt); | |
8424 | ||
8425 | /* Swap out the .strtab section. */ | |
8426 | for (idx = 0; idx <= symcount; idx++) | |
8427 | { | |
8428 | struct elf_sym_strtab *elfsym = &symstrtab[idx]; | |
8429 | if (elfsym->sym.st_name == (unsigned long) -1) | |
8430 | elfsym->sym.st_name = 0; | |
8431 | else | |
8432 | elfsym->sym.st_name = _bfd_elf_strtab_offset (stt, | |
8433 | elfsym->sym.st_name); | |
3d16b64e NA |
8434 | if (info && info->callbacks->ctf_new_symbol) |
8435 | info->callbacks->ctf_new_symbol (elfsym->dest_index, | |
8436 | &elfsym->sym); | |
8437 | ||
8438 | /* Inform the linker of the addition of this symbol. */ | |
8439 | ||
ef10c3ac L |
8440 | bed->s->swap_symbol_out (abfd, &elfsym->sym, |
8441 | (outbound_syms | |
8442 | + (elfsym->dest_index | |
8443 | * bed->s->sizeof_sym)), | |
8444 | (outbound_shndx | |
8445 | + (elfsym->destshndx_index | |
8446 | * sizeof (Elf_External_Sym_Shndx)))); | |
079e9a2f | 8447 | } |
ef10c3ac | 8448 | free (symstrtab); |
252b5132 | 8449 | |
079e9a2f | 8450 | *sttp = stt; |
ef10c3ac | 8451 | symstrtab_hdr->sh_size = _bfd_elf_strtab_size (stt); |
079e9a2f | 8452 | symstrtab_hdr->sh_type = SHT_STRTAB; |
84865015 | 8453 | symstrtab_hdr->sh_flags = bed->elf_strtab_flags; |
079e9a2f AM |
8454 | symstrtab_hdr->sh_addr = 0; |
8455 | symstrtab_hdr->sh_entsize = 0; | |
8456 | symstrtab_hdr->sh_link = 0; | |
8457 | symstrtab_hdr->sh_info = 0; | |
8458 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 8459 | |
0a1b45a2 | 8460 | return true; |
252b5132 RH |
8461 | } |
8462 | ||
8463 | /* Return the number of bytes required to hold the symtab vector. | |
8464 | ||
8465 | Note that we base it on the count plus 1, since we will null terminate | |
8466 | the vector allocated based on this size. However, the ELF symbol table | |
8467 | always has a dummy entry as symbol #0, so it ends up even. */ | |
8468 | ||
8469 | long | |
217aa764 | 8470 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 | 8471 | { |
3a551c7a | 8472 | bfd_size_type symcount; |
252b5132 RH |
8473 | long symtab_size; |
8474 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
8475 | ||
8476 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b5f386d5 | 8477 | if (symcount > LONG_MAX / sizeof (asymbol *)) |
3a551c7a AM |
8478 | { |
8479 | bfd_set_error (bfd_error_file_too_big); | |
8480 | return -1; | |
8481 | } | |
b5f386d5 AM |
8482 | symtab_size = symcount * (sizeof (asymbol *)); |
8483 | if (symcount == 0) | |
8484 | symtab_size = sizeof (asymbol *); | |
8485 | else if (!bfd_write_p (abfd)) | |
8486 | { | |
8487 | ufile_ptr filesize = bfd_get_file_size (abfd); | |
8488 | ||
8489 | if (filesize != 0 && (unsigned long) symtab_size > filesize) | |
8490 | { | |
8491 | bfd_set_error (bfd_error_file_truncated); | |
8492 | return -1; | |
8493 | } | |
8494 | } | |
252b5132 RH |
8495 | |
8496 | return symtab_size; | |
8497 | } | |
8498 | ||
8499 | long | |
217aa764 | 8500 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 | 8501 | { |
3a551c7a | 8502 | bfd_size_type symcount; |
252b5132 RH |
8503 | long symtab_size; |
8504 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
8505 | ||
8506 | if (elf_dynsymtab (abfd) == 0) | |
8507 | { | |
8508 | bfd_set_error (bfd_error_invalid_operation); | |
8509 | return -1; | |
8510 | } | |
8511 | ||
8512 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b5f386d5 | 8513 | if (symcount > LONG_MAX / sizeof (asymbol *)) |
3a551c7a AM |
8514 | { |
8515 | bfd_set_error (bfd_error_file_too_big); | |
8516 | return -1; | |
8517 | } | |
b5f386d5 AM |
8518 | symtab_size = symcount * (sizeof (asymbol *)); |
8519 | if (symcount == 0) | |
8520 | symtab_size = sizeof (asymbol *); | |
8521 | else if (!bfd_write_p (abfd)) | |
8522 | { | |
8523 | ufile_ptr filesize = bfd_get_file_size (abfd); | |
8524 | ||
8525 | if (filesize != 0 && (unsigned long) symtab_size > filesize) | |
8526 | { | |
8527 | bfd_set_error (bfd_error_file_truncated); | |
8528 | return -1; | |
8529 | } | |
8530 | } | |
252b5132 RH |
8531 | |
8532 | return symtab_size; | |
8533 | } | |
8534 | ||
8535 | long | |
3c568b8a | 8536 | _bfd_elf_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) |
252b5132 | 8537 | { |
b5f386d5 | 8538 | if (asect->reloc_count != 0 && !bfd_write_p (abfd)) |
3c568b8a AM |
8539 | { |
8540 | /* Sanity check reloc section size. */ | |
8541 | struct bfd_elf_section_data *d = elf_section_data (asect); | |
8542 | Elf_Internal_Shdr *rel_hdr = &d->this_hdr; | |
8543 | bfd_size_type ext_rel_size = rel_hdr->sh_size; | |
8544 | ufile_ptr filesize = bfd_get_file_size (abfd); | |
8545 | ||
8546 | if (filesize != 0 && ext_rel_size > filesize) | |
8547 | { | |
8548 | bfd_set_error (bfd_error_file_truncated); | |
8549 | return -1; | |
8550 | } | |
8551 | } | |
8552 | ||
242a1159 | 8553 | #if SIZEOF_LONG == SIZEOF_INT |
7a6e0d89 AM |
8554 | if (asect->reloc_count >= LONG_MAX / sizeof (arelent *)) |
8555 | { | |
8556 | bfd_set_error (bfd_error_file_too_big); | |
8557 | return -1; | |
8558 | } | |
242a1159 | 8559 | #endif |
252b5132 RH |
8560 | return (asect->reloc_count + 1) * sizeof (arelent *); |
8561 | } | |
8562 | ||
8563 | /* Canonicalize the relocs. */ | |
8564 | ||
8565 | long | |
217aa764 AM |
8566 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
8567 | sec_ptr section, | |
8568 | arelent **relptr, | |
8569 | asymbol **symbols) | |
252b5132 RH |
8570 | { |
8571 | arelent *tblptr; | |
8572 | unsigned int i; | |
9c5bfbb7 | 8573 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 8574 | |
0a1b45a2 | 8575 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, false)) |
252b5132 RH |
8576 | return -1; |
8577 | ||
8578 | tblptr = section->relocation; | |
8579 | for (i = 0; i < section->reloc_count; i++) | |
8580 | *relptr++ = tblptr++; | |
8581 | ||
8582 | *relptr = NULL; | |
8583 | ||
8584 | return section->reloc_count; | |
8585 | } | |
8586 | ||
8587 | long | |
6cee3f79 | 8588 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 8589 | { |
9c5bfbb7 | 8590 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
0a1b45a2 | 8591 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, false); |
252b5132 RH |
8592 | |
8593 | if (symcount >= 0) | |
ed48ec2e | 8594 | abfd->symcount = symcount; |
252b5132 RH |
8595 | return symcount; |
8596 | } | |
8597 | ||
8598 | long | |
217aa764 AM |
8599 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
8600 | asymbol **allocation) | |
252b5132 | 8601 | { |
9c5bfbb7 | 8602 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
0a1b45a2 | 8603 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, true); |
1f70368c DJ |
8604 | |
8605 | if (symcount >= 0) | |
ed48ec2e | 8606 | abfd->dynsymcount = symcount; |
1f70368c | 8607 | return symcount; |
252b5132 RH |
8608 | } |
8609 | ||
8615f3f2 AM |
8610 | /* Return the size required for the dynamic reloc entries. Any loadable |
8611 | section that was actually installed in the BFD, and has type SHT_REL | |
8612 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
8613 | dynamic reloc section. */ | |
252b5132 RH |
8614 | |
8615 | long | |
217aa764 | 8616 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 | 8617 | { |
3c568b8a | 8618 | bfd_size_type count, ext_rel_size; |
252b5132 RH |
8619 | asection *s; |
8620 | ||
8621 | if (elf_dynsymtab (abfd) == 0) | |
8622 | { | |
8623 | bfd_set_error (bfd_error_invalid_operation); | |
8624 | return -1; | |
8625 | } | |
8626 | ||
3a551c7a | 8627 | count = 1; |
3c568b8a | 8628 | ext_rel_size = 0; |
252b5132 | 8629 | for (s = abfd->sections; s != NULL; s = s->next) |
266b05cf | 8630 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
252b5132 RH |
8631 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
8632 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
3a551c7a | 8633 | { |
3c568b8a AM |
8634 | ext_rel_size += s->size; |
8635 | if (ext_rel_size < s->size) | |
8636 | { | |
8637 | bfd_set_error (bfd_error_file_truncated); | |
8638 | return -1; | |
8639 | } | |
3a551c7a AM |
8640 | count += s->size / elf_section_data (s)->this_hdr.sh_entsize; |
8641 | if (count > LONG_MAX / sizeof (arelent *)) | |
8642 | { | |
8643 | bfd_set_error (bfd_error_file_too_big); | |
8644 | return -1; | |
8645 | } | |
8646 | } | |
b5f386d5 | 8647 | if (count > 1 && !bfd_write_p (abfd)) |
3c568b8a AM |
8648 | { |
8649 | /* Sanity check reloc section sizes. */ | |
8650 | ufile_ptr filesize = bfd_get_file_size (abfd); | |
8651 | if (filesize != 0 && ext_rel_size > filesize) | |
8652 | { | |
8653 | bfd_set_error (bfd_error_file_truncated); | |
8654 | return -1; | |
8655 | } | |
8656 | } | |
3a551c7a | 8657 | return count * sizeof (arelent *); |
252b5132 RH |
8658 | } |
8659 | ||
8615f3f2 AM |
8660 | /* Canonicalize the dynamic relocation entries. Note that we return the |
8661 | dynamic relocations as a single block, although they are actually | |
8662 | associated with particular sections; the interface, which was | |
8663 | designed for SunOS style shared libraries, expects that there is only | |
8664 | one set of dynamic relocs. Any loadable section that was actually | |
8665 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
8666 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
8667 | |
8668 | long | |
217aa764 AM |
8669 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
8670 | arelent **storage, | |
8671 | asymbol **syms) | |
252b5132 | 8672 | { |
0a1b45a2 | 8673 | bool (*slurp_relocs) (bfd *, asection *, asymbol **, bool); |
252b5132 RH |
8674 | asection *s; |
8675 | long ret; | |
8676 | ||
8677 | if (elf_dynsymtab (abfd) == 0) | |
8678 | { | |
8679 | bfd_set_error (bfd_error_invalid_operation); | |
8680 | return -1; | |
8681 | } | |
8682 | ||
8683 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
8684 | ret = 0; | |
8685 | for (s = abfd->sections; s != NULL; s = s->next) | |
8686 | { | |
266b05cf | 8687 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
252b5132 RH |
8688 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
8689 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
8690 | { | |
8691 | arelent *p; | |
8692 | long count, i; | |
8693 | ||
0a1b45a2 | 8694 | if (! (*slurp_relocs) (abfd, s, syms, true)) |
252b5132 | 8695 | return -1; |
eea6121a | 8696 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
8697 | p = s->relocation; |
8698 | for (i = 0; i < count; i++) | |
8699 | *storage++ = p++; | |
8700 | ret += count; | |
8701 | } | |
8702 | } | |
8703 | ||
8704 | *storage = NULL; | |
8705 | ||
8706 | return ret; | |
8707 | } | |
8708 | \f | |
8709 | /* Read in the version information. */ | |
8710 | ||
0a1b45a2 AM |
8711 | bool |
8712 | _bfd_elf_slurp_version_tables (bfd *abfd, bool default_imported_symver) | |
252b5132 RH |
8713 | { |
8714 | bfd_byte *contents = NULL; | |
fc0e6df6 | 8715 | unsigned int freeidx = 0; |
1f4361a7 | 8716 | size_t amt; |
fc0e6df6 PB |
8717 | |
8718 | if (elf_dynverref (abfd) != 0) | |
8719 | { | |
8720 | Elf_Internal_Shdr *hdr; | |
8721 | Elf_External_Verneed *everneed; | |
8722 | Elf_Internal_Verneed *iverneed; | |
8723 | unsigned int i; | |
d0fb9a8d | 8724 | bfd_byte *contents_end; |
fc0e6df6 PB |
8725 | |
8726 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
8727 | ||
bd61e135 AM |
8728 | if (hdr->sh_info == 0 |
8729 | || hdr->sh_info > hdr->sh_size / sizeof (Elf_External_Verneed)) | |
d0fb9a8d | 8730 | { |
dc1e8a47 | 8731 | error_return_bad_verref: |
4eca0228 | 8732 | _bfd_error_handler |
871b3ab2 | 8733 | (_("%pB: .gnu.version_r invalid entry"), abfd); |
601a03ba | 8734 | bfd_set_error (bfd_error_bad_value); |
dc1e8a47 | 8735 | error_return_verref: |
d0fb9a8d JJ |
8736 | elf_tdata (abfd)->verref = NULL; |
8737 | elf_tdata (abfd)->cverrefs = 0; | |
8738 | goto error_return; | |
8739 | } | |
601a03ba | 8740 | |
2bb3687b AM |
8741 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0) |
8742 | goto error_return_verref; | |
8743 | contents = _bfd_malloc_and_read (abfd, hdr->sh_size, hdr->sh_size); | |
8744 | if (contents == NULL) | |
d0fb9a8d | 8745 | goto error_return_verref; |
fc0e6df6 | 8746 | |
1f4361a7 AM |
8747 | if (_bfd_mul_overflow (hdr->sh_info, sizeof (Elf_Internal_Verneed), &amt)) |
8748 | { | |
8749 | bfd_set_error (bfd_error_file_too_big); | |
8750 | goto error_return_verref; | |
8751 | } | |
8752 | elf_tdata (abfd)->verref = (Elf_Internal_Verneed *) bfd_alloc (abfd, amt); | |
601a03ba | 8753 | if (elf_tdata (abfd)->verref == NULL) |
d0fb9a8d JJ |
8754 | goto error_return_verref; |
8755 | ||
8756 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
8757 | == sizeof (Elf_External_Vernaux)); | |
8758 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
8759 | everneed = (Elf_External_Verneed *) contents; |
8760 | iverneed = elf_tdata (abfd)->verref; | |
8761 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
8762 | { | |
8763 | Elf_External_Vernaux *evernaux; | |
8764 | Elf_Internal_Vernaux *ivernaux; | |
8765 | unsigned int j; | |
8766 | ||
8767 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
8768 | ||
8769 | iverneed->vn_bfd = abfd; | |
8770 | ||
8771 | iverneed->vn_filename = | |
8772 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
8773 | iverneed->vn_file); | |
8774 | if (iverneed->vn_filename == NULL) | |
601a03ba | 8775 | goto error_return_bad_verref; |
fc0e6df6 | 8776 | |
d0fb9a8d JJ |
8777 | if (iverneed->vn_cnt == 0) |
8778 | iverneed->vn_auxptr = NULL; | |
8779 | else | |
8780 | { | |
1f4361a7 AM |
8781 | if (_bfd_mul_overflow (iverneed->vn_cnt, |
8782 | sizeof (Elf_Internal_Vernaux), &amt)) | |
8783 | { | |
8784 | bfd_set_error (bfd_error_file_too_big); | |
8785 | goto error_return_verref; | |
8786 | } | |
a50b1753 | 8787 | iverneed->vn_auxptr = (struct elf_internal_vernaux *) |
1f4361a7 | 8788 | bfd_alloc (abfd, amt); |
d0fb9a8d JJ |
8789 | if (iverneed->vn_auxptr == NULL) |
8790 | goto error_return_verref; | |
8791 | } | |
8792 | ||
8793 | if (iverneed->vn_aux | |
8794 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
601a03ba | 8795 | goto error_return_bad_verref; |
fc0e6df6 PB |
8796 | |
8797 | evernaux = ((Elf_External_Vernaux *) | |
8798 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
8799 | ivernaux = iverneed->vn_auxptr; | |
8800 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
8801 | { | |
8802 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
8803 | ||
8804 | ivernaux->vna_nodename = | |
8805 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
8806 | ivernaux->vna_name); | |
8807 | if (ivernaux->vna_nodename == NULL) | |
601a03ba | 8808 | goto error_return_bad_verref; |
fc0e6df6 | 8809 | |
25ff461f AM |
8810 | if (ivernaux->vna_other > freeidx) |
8811 | freeidx = ivernaux->vna_other; | |
8812 | ||
8813 | ivernaux->vna_nextptr = NULL; | |
8814 | if (ivernaux->vna_next == 0) | |
8815 | { | |
8816 | iverneed->vn_cnt = j + 1; | |
8817 | break; | |
8818 | } | |
fc0e6df6 PB |
8819 | if (j + 1 < iverneed->vn_cnt) |
8820 | ivernaux->vna_nextptr = ivernaux + 1; | |
fc0e6df6 | 8821 | |
d0fb9a8d JJ |
8822 | if (ivernaux->vna_next |
8823 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
601a03ba | 8824 | goto error_return_bad_verref; |
d0fb9a8d | 8825 | |
fc0e6df6 PB |
8826 | evernaux = ((Elf_External_Vernaux *) |
8827 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
fc0e6df6 PB |
8828 | } |
8829 | ||
25ff461f AM |
8830 | iverneed->vn_nextref = NULL; |
8831 | if (iverneed->vn_next == 0) | |
8832 | break; | |
fc0e6df6 PB |
8833 | if (i + 1 < hdr->sh_info) |
8834 | iverneed->vn_nextref = iverneed + 1; | |
fc0e6df6 | 8835 | |
d0fb9a8d JJ |
8836 | if (iverneed->vn_next |
8837 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
601a03ba | 8838 | goto error_return_bad_verref; |
d0fb9a8d | 8839 | |
fc0e6df6 PB |
8840 | everneed = ((Elf_External_Verneed *) |
8841 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
8842 | } | |
25ff461f | 8843 | elf_tdata (abfd)->cverrefs = i; |
fc0e6df6 PB |
8844 | |
8845 | free (contents); | |
8846 | contents = NULL; | |
8847 | } | |
252b5132 RH |
8848 | |
8849 | if (elf_dynverdef (abfd) != 0) | |
8850 | { | |
8851 | Elf_Internal_Shdr *hdr; | |
8852 | Elf_External_Verdef *everdef; | |
8853 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
8854 | Elf_Internal_Verdef *iverdefarr; |
8855 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 8856 | unsigned int i; |
062e2358 | 8857 | unsigned int maxidx; |
d0fb9a8d | 8858 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
8859 | |
8860 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
8861 | ||
601a03ba AM |
8862 | if (hdr->sh_info == 0 || hdr->sh_size < sizeof (Elf_External_Verdef)) |
8863 | { | |
8864 | error_return_bad_verdef: | |
4eca0228 | 8865 | _bfd_error_handler |
871b3ab2 | 8866 | (_("%pB: .gnu.version_d invalid entry"), abfd); |
601a03ba AM |
8867 | bfd_set_error (bfd_error_bad_value); |
8868 | error_return_verdef: | |
8869 | elf_tdata (abfd)->verdef = NULL; | |
8870 | elf_tdata (abfd)->cverdefs = 0; | |
8871 | goto error_return; | |
8872 | } | |
8873 | ||
2bb3687b | 8874 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0) |
601a03ba | 8875 | goto error_return_verdef; |
2bb3687b AM |
8876 | contents = _bfd_malloc_and_read (abfd, hdr->sh_size, hdr->sh_size); |
8877 | if (contents == NULL) | |
601a03ba | 8878 | goto error_return_verdef; |
d0fb9a8d JJ |
8879 | |
8880 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
8881 | >= sizeof (Elf_External_Verdaux)); | |
8882 | contents_end_def = contents + hdr->sh_size | |
8883 | - sizeof (Elf_External_Verdef); | |
8884 | contents_end_aux = contents + hdr->sh_size | |
8885 | - sizeof (Elf_External_Verdaux); | |
8886 | ||
f631889e UD |
8887 | /* We know the number of entries in the section but not the maximum |
8888 | index. Therefore we have to run through all entries and find | |
8889 | the maximum. */ | |
252b5132 | 8890 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
8891 | maxidx = 0; |
8892 | for (i = 0; i < hdr->sh_info; ++i) | |
8893 | { | |
8894 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
8895 | ||
601a03ba AM |
8896 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) == 0) |
8897 | goto error_return_bad_verdef; | |
062e2358 AM |
8898 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
8899 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 8900 | |
25ff461f AM |
8901 | if (iverdefmem.vd_next == 0) |
8902 | break; | |
8903 | ||
d0fb9a8d JJ |
8904 | if (iverdefmem.vd_next |
8905 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
601a03ba | 8906 | goto error_return_bad_verdef; |
d0fb9a8d | 8907 | |
f631889e UD |
8908 | everdef = ((Elf_External_Verdef *) |
8909 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
8910 | } | |
8911 | ||
fc0e6df6 PB |
8912 | if (default_imported_symver) |
8913 | { | |
8914 | if (freeidx > maxidx) | |
8915 | maxidx = ++freeidx; | |
8916 | else | |
8917 | freeidx = ++maxidx; | |
8918 | } | |
1f4361a7 AM |
8919 | if (_bfd_mul_overflow (maxidx, sizeof (Elf_Internal_Verdef), &amt)) |
8920 | { | |
8921 | bfd_set_error (bfd_error_file_too_big); | |
8922 | goto error_return_verdef; | |
8923 | } | |
8924 | elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) bfd_zalloc (abfd, amt); | |
f631889e | 8925 | if (elf_tdata (abfd)->verdef == NULL) |
601a03ba | 8926 | goto error_return_verdef; |
f631889e UD |
8927 | |
8928 | elf_tdata (abfd)->cverdefs = maxidx; | |
8929 | ||
8930 | everdef = (Elf_External_Verdef *) contents; | |
8931 | iverdefarr = elf_tdata (abfd)->verdef; | |
8932 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
8933 | { |
8934 | Elf_External_Verdaux *everdaux; | |
8935 | Elf_Internal_Verdaux *iverdaux; | |
8936 | unsigned int j; | |
8937 | ||
f631889e UD |
8938 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
8939 | ||
d0fb9a8d | 8940 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
601a03ba | 8941 | goto error_return_bad_verdef; |
d0fb9a8d | 8942 | |
f631889e | 8943 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
595bce75 | 8944 | memcpy (iverdef, &iverdefmem, offsetof (Elf_Internal_Verdef, vd_bfd)); |
252b5132 RH |
8945 | |
8946 | iverdef->vd_bfd = abfd; | |
8947 | ||
d0fb9a8d JJ |
8948 | if (iverdef->vd_cnt == 0) |
8949 | iverdef->vd_auxptr = NULL; | |
8950 | else | |
8951 | { | |
1f4361a7 AM |
8952 | if (_bfd_mul_overflow (iverdef->vd_cnt, |
8953 | sizeof (Elf_Internal_Verdaux), &amt)) | |
8954 | { | |
8955 | bfd_set_error (bfd_error_file_too_big); | |
8956 | goto error_return_verdef; | |
8957 | } | |
a50b1753 | 8958 | iverdef->vd_auxptr = (struct elf_internal_verdaux *) |
1f4361a7 | 8959 | bfd_alloc (abfd, amt); |
d0fb9a8d JJ |
8960 | if (iverdef->vd_auxptr == NULL) |
8961 | goto error_return_verdef; | |
8962 | } | |
8963 | ||
8964 | if (iverdef->vd_aux | |
8965 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
601a03ba | 8966 | goto error_return_bad_verdef; |
252b5132 RH |
8967 | |
8968 | everdaux = ((Elf_External_Verdaux *) | |
8969 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
8970 | iverdaux = iverdef->vd_auxptr; | |
8971 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
8972 | { | |
8973 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
8974 | ||
8975 | iverdaux->vda_nodename = | |
8976 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
8977 | iverdaux->vda_name); | |
8978 | if (iverdaux->vda_nodename == NULL) | |
601a03ba | 8979 | goto error_return_bad_verdef; |
252b5132 | 8980 | |
25ff461f AM |
8981 | iverdaux->vda_nextptr = NULL; |
8982 | if (iverdaux->vda_next == 0) | |
8983 | { | |
8984 | iverdef->vd_cnt = j + 1; | |
8985 | break; | |
8986 | } | |
252b5132 RH |
8987 | if (j + 1 < iverdef->vd_cnt) |
8988 | iverdaux->vda_nextptr = iverdaux + 1; | |
252b5132 | 8989 | |
d0fb9a8d JJ |
8990 | if (iverdaux->vda_next |
8991 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
601a03ba | 8992 | goto error_return_bad_verdef; |
d0fb9a8d | 8993 | |
252b5132 RH |
8994 | everdaux = ((Elf_External_Verdaux *) |
8995 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
8996 | } | |
8997 | ||
595bce75 | 8998 | iverdef->vd_nodename = NULL; |
d0fb9a8d JJ |
8999 | if (iverdef->vd_cnt) |
9000 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 9001 | |
25ff461f AM |
9002 | iverdef->vd_nextdef = NULL; |
9003 | if (iverdef->vd_next == 0) | |
9004 | break; | |
d0fb9a8d | 9005 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 | 9006 | iverdef->vd_nextdef = iverdef + 1; |
252b5132 RH |
9007 | |
9008 | everdef = ((Elf_External_Verdef *) | |
9009 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
9010 | } | |
9011 | ||
9012 | free (contents); | |
9013 | contents = NULL; | |
9014 | } | |
fc0e6df6 | 9015 | else if (default_imported_symver) |
252b5132 | 9016 | { |
fc0e6df6 PB |
9017 | if (freeidx < 3) |
9018 | freeidx = 3; | |
9019 | else | |
9020 | freeidx++; | |
252b5132 | 9021 | |
1f4361a7 AM |
9022 | if (_bfd_mul_overflow (freeidx, sizeof (Elf_Internal_Verdef), &amt)) |
9023 | { | |
9024 | bfd_set_error (bfd_error_file_too_big); | |
9025 | goto error_return; | |
9026 | } | |
9027 | elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) bfd_zalloc (abfd, amt); | |
fc0e6df6 | 9028 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
9029 | goto error_return; |
9030 | ||
fc0e6df6 PB |
9031 | elf_tdata (abfd)->cverdefs = freeidx; |
9032 | } | |
252b5132 | 9033 | |
fc0e6df6 PB |
9034 | /* Create a default version based on the soname. */ |
9035 | if (default_imported_symver) | |
9036 | { | |
9037 | Elf_Internal_Verdef *iverdef; | |
9038 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 9039 | |
5bb3703f | 9040 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1]; |
252b5132 | 9041 | |
fc0e6df6 PB |
9042 | iverdef->vd_version = VER_DEF_CURRENT; |
9043 | iverdef->vd_flags = 0; | |
9044 | iverdef->vd_ndx = freeidx; | |
9045 | iverdef->vd_cnt = 1; | |
252b5132 | 9046 | |
fc0e6df6 | 9047 | iverdef->vd_bfd = abfd; |
252b5132 | 9048 | |
fc0e6df6 PB |
9049 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
9050 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 9051 | goto error_return_verdef; |
fc0e6df6 | 9052 | iverdef->vd_nextdef = NULL; |
601a03ba AM |
9053 | iverdef->vd_auxptr = ((struct elf_internal_verdaux *) |
9054 | bfd_zalloc (abfd, sizeof (Elf_Internal_Verdaux))); | |
d0fb9a8d JJ |
9055 | if (iverdef->vd_auxptr == NULL) |
9056 | goto error_return_verdef; | |
252b5132 | 9057 | |
fc0e6df6 PB |
9058 | iverdaux = iverdef->vd_auxptr; |
9059 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
252b5132 RH |
9060 | } |
9061 | ||
0a1b45a2 | 9062 | return true; |
252b5132 RH |
9063 | |
9064 | error_return: | |
c9594989 | 9065 | free (contents); |
0a1b45a2 | 9066 | return false; |
252b5132 RH |
9067 | } |
9068 | \f | |
9069 | asymbol * | |
217aa764 | 9070 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
9071 | { |
9072 | elf_symbol_type *newsym; | |
9073 | ||
7a6e0d89 | 9074 | newsym = (elf_symbol_type *) bfd_zalloc (abfd, sizeof (*newsym)); |
252b5132 RH |
9075 | if (!newsym) |
9076 | return NULL; | |
201159ec NC |
9077 | newsym->symbol.the_bfd = abfd; |
9078 | return &newsym->symbol; | |
252b5132 RH |
9079 | } |
9080 | ||
9081 | void | |
217aa764 AM |
9082 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
9083 | asymbol *symbol, | |
9084 | symbol_info *ret) | |
252b5132 RH |
9085 | { |
9086 | bfd_symbol_info (symbol, ret); | |
9087 | } | |
9088 | ||
9089 | /* Return whether a symbol name implies a local symbol. Most targets | |
9090 | use this function for the is_local_label_name entry point, but some | |
9091 | override it. */ | |
9092 | ||
0a1b45a2 | 9093 | bool |
217aa764 AM |
9094 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
9095 | const char *name) | |
252b5132 RH |
9096 | { |
9097 | /* Normal local symbols start with ``.L''. */ | |
9098 | if (name[0] == '.' && name[1] == 'L') | |
0a1b45a2 | 9099 | return true; |
252b5132 RH |
9100 | |
9101 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
9102 | DWARF debugging symbols starting with ``..''. */ | |
9103 | if (name[0] == '.' && name[1] == '.') | |
0a1b45a2 | 9104 | return true; |
252b5132 RH |
9105 | |
9106 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
9107 | emitting DWARF debugging output. I suspect this is actually a | |
9108 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
9109 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
9110 | underscore to be emitted on some ELF targets). For ease of use, | |
9111 | we treat such symbols as local. */ | |
9112 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
0a1b45a2 | 9113 | return true; |
252b5132 | 9114 | |
b1fa9dd6 NC |
9115 | /* Treat assembler generated fake symbols, dollar local labels and |
9116 | forward-backward labels (aka local labels) as locals. | |
9117 | These labels have the form: | |
9118 | ||
07d6d2b8 | 9119 | L0^A.* (fake symbols) |
b1fa9dd6 NC |
9120 | |
9121 | [.]?L[0123456789]+{^A|^B}[0123456789]* (local labels) | |
9122 | ||
9123 | Versions which start with .L will have already been matched above, | |
9124 | so we only need to match the rest. */ | |
9125 | if (name[0] == 'L' && ISDIGIT (name[1])) | |
9126 | { | |
0a1b45a2 | 9127 | bool ret = false; |
b1fa9dd6 NC |
9128 | const char * p; |
9129 | char c; | |
9130 | ||
9131 | for (p = name + 2; (c = *p); p++) | |
9132 | { | |
9133 | if (c == 1 || c == 2) | |
9134 | { | |
9135 | if (c == 1 && p == name + 2) | |
9136 | /* A fake symbol. */ | |
0a1b45a2 | 9137 | return true; |
b1fa9dd6 NC |
9138 | |
9139 | /* FIXME: We are being paranoid here and treating symbols like | |
9140 | L0^Bfoo as if there were non-local, on the grounds that the | |
9141 | assembler will never generate them. But can any symbol | |
9142 | containing an ASCII value in the range 1-31 ever be anything | |
9143 | other than some kind of local ? */ | |
0a1b45a2 | 9144 | ret = true; |
b1fa9dd6 NC |
9145 | } |
9146 | ||
9147 | if (! ISDIGIT (c)) | |
9148 | { | |
0a1b45a2 | 9149 | ret = false; |
b1fa9dd6 NC |
9150 | break; |
9151 | } | |
9152 | } | |
9153 | return ret; | |
9154 | } | |
ffa54770 | 9155 | |
0a1b45a2 | 9156 | return false; |
252b5132 RH |
9157 | } |
9158 | ||
9159 | alent * | |
217aa764 AM |
9160 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
9161 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
9162 | { |
9163 | abort (); | |
9164 | return NULL; | |
9165 | } | |
9166 | ||
0a1b45a2 | 9167 | bool |
217aa764 AM |
9168 | _bfd_elf_set_arch_mach (bfd *abfd, |
9169 | enum bfd_architecture arch, | |
9170 | unsigned long machine) | |
252b5132 RH |
9171 | { |
9172 | /* If this isn't the right architecture for this backend, and this | |
9173 | isn't the generic backend, fail. */ | |
9174 | if (arch != get_elf_backend_data (abfd)->arch | |
9175 | && arch != bfd_arch_unknown | |
9176 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
0a1b45a2 | 9177 | return false; |
252b5132 RH |
9178 | |
9179 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
9180 | } | |
9181 | ||
d1fad7c6 NC |
9182 | /* Find the nearest line to a particular section and offset, |
9183 | for error reporting. */ | |
9184 | ||
0a1b45a2 | 9185 | bool |
217aa764 | 9186 | _bfd_elf_find_nearest_line (bfd *abfd, |
217aa764 | 9187 | asymbol **symbols, |
fb167eb2 | 9188 | asection *section, |
217aa764 AM |
9189 | bfd_vma offset, |
9190 | const char **filename_ptr, | |
9191 | const char **functionname_ptr, | |
fb167eb2 AM |
9192 | unsigned int *line_ptr, |
9193 | unsigned int *discriminator_ptr) | |
d1fad7c6 | 9194 | { |
0a1b45a2 | 9195 | bool found; |
d1fad7c6 | 9196 | |
fb167eb2 | 9197 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
4e8a9624 | 9198 | filename_ptr, functionname_ptr, |
fb167eb2 | 9199 | line_ptr, discriminator_ptr, |
9defd221 | 9200 | dwarf_debug_sections, |
e7679060 | 9201 | &elf_tdata (abfd)->dwarf2_find_line_info)) |
0a1b45a2 | 9202 | return true; |
e7679060 AM |
9203 | |
9204 | if (_bfd_dwarf1_find_nearest_line (abfd, symbols, section, offset, | |
9205 | filename_ptr, functionname_ptr, line_ptr)) | |
d1fad7c6 NC |
9206 | { |
9207 | if (!*functionname_ptr) | |
e00e8198 AM |
9208 | _bfd_elf_find_function (abfd, symbols, section, offset, |
9209 | *filename_ptr ? NULL : filename_ptr, | |
9210 | functionname_ptr); | |
0a1b45a2 | 9211 | return true; |
d1fad7c6 NC |
9212 | } |
9213 | ||
9214 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
9215 | &found, filename_ptr, |
9216 | functionname_ptr, line_ptr, | |
9217 | &elf_tdata (abfd)->line_info)) | |
0a1b45a2 | 9218 | return false; |
dc43ada5 | 9219 | if (found && (*functionname_ptr || *line_ptr)) |
0a1b45a2 | 9220 | return true; |
d1fad7c6 NC |
9221 | |
9222 | if (symbols == NULL) | |
0a1b45a2 | 9223 | return false; |
d1fad7c6 | 9224 | |
e00e8198 AM |
9225 | if (! _bfd_elf_find_function (abfd, symbols, section, offset, |
9226 | filename_ptr, functionname_ptr)) | |
0a1b45a2 | 9227 | return false; |
d1fad7c6 | 9228 | |
252b5132 | 9229 | *line_ptr = 0; |
0a1b45a2 | 9230 | return true; |
252b5132 RH |
9231 | } |
9232 | ||
5420f73d L |
9233 | /* Find the line for a symbol. */ |
9234 | ||
0a1b45a2 | 9235 | bool |
5420f73d L |
9236 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, |
9237 | const char **filename_ptr, unsigned int *line_ptr) | |
9b8d1a36 | 9238 | { |
fb167eb2 AM |
9239 | return _bfd_dwarf2_find_nearest_line (abfd, symbols, symbol, NULL, 0, |
9240 | filename_ptr, NULL, line_ptr, NULL, | |
9defd221 | 9241 | dwarf_debug_sections, |
fb167eb2 | 9242 | &elf_tdata (abfd)->dwarf2_find_line_info); |
5420f73d L |
9243 | } |
9244 | ||
4ab527b0 FF |
9245 | /* After a call to bfd_find_nearest_line, successive calls to |
9246 | bfd_find_inliner_info can be used to get source information about | |
9247 | each level of function inlining that terminated at the address | |
9248 | passed to bfd_find_nearest_line. Currently this is only supported | |
9249 | for DWARF2 with appropriate DWARF3 extensions. */ | |
9250 | ||
0a1b45a2 | 9251 | bool |
4ab527b0 FF |
9252 | _bfd_elf_find_inliner_info (bfd *abfd, |
9253 | const char **filename_ptr, | |
9254 | const char **functionname_ptr, | |
9255 | unsigned int *line_ptr) | |
9256 | { | |
0a1b45a2 | 9257 | bool found; |
4ab527b0 FF |
9258 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, |
9259 | functionname_ptr, line_ptr, | |
9260 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
9261 | return found; | |
9262 | } | |
9263 | ||
252b5132 | 9264 | int |
a6b96beb | 9265 | _bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 9266 | { |
8ded5a0f AM |
9267 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
9268 | int ret = bed->s->sizeof_ehdr; | |
252b5132 | 9269 | |
0e1862bb | 9270 | if (!bfd_link_relocatable (info)) |
8ded5a0f | 9271 | { |
12bd6957 | 9272 | bfd_size_type phdr_size = elf_program_header_size (abfd); |
8ded5a0f | 9273 | |
62d7a5f6 AM |
9274 | if (phdr_size == (bfd_size_type) -1) |
9275 | { | |
9276 | struct elf_segment_map *m; | |
9277 | ||
9278 | phdr_size = 0; | |
12bd6957 | 9279 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
62d7a5f6 | 9280 | phdr_size += bed->s->sizeof_phdr; |
8ded5a0f | 9281 | |
62d7a5f6 AM |
9282 | if (phdr_size == 0) |
9283 | phdr_size = get_program_header_size (abfd, info); | |
9284 | } | |
8ded5a0f | 9285 | |
12bd6957 | 9286 | elf_program_header_size (abfd) = phdr_size; |
8ded5a0f AM |
9287 | ret += phdr_size; |
9288 | } | |
9289 | ||
252b5132 RH |
9290 | return ret; |
9291 | } | |
9292 | ||
0a1b45a2 | 9293 | bool |
217aa764 AM |
9294 | _bfd_elf_set_section_contents (bfd *abfd, |
9295 | sec_ptr section, | |
0f867abe | 9296 | const void *location, |
217aa764 AM |
9297 | file_ptr offset, |
9298 | bfd_size_type count) | |
252b5132 RH |
9299 | { |
9300 | Elf_Internal_Shdr *hdr; | |
1b6aeedb | 9301 | file_ptr pos; |
252b5132 RH |
9302 | |
9303 | if (! abfd->output_has_begun | |
217aa764 | 9304 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
0a1b45a2 | 9305 | return false; |
252b5132 | 9306 | |
0ce398f1 | 9307 | if (!count) |
0a1b45a2 | 9308 | return true; |
0ce398f1 | 9309 | |
252b5132 | 9310 | hdr = &elf_section_data (section)->this_hdr; |
0ce398f1 L |
9311 | if (hdr->sh_offset == (file_ptr) -1) |
9312 | { | |
a0dcf297 NC |
9313 | unsigned char *contents; |
9314 | ||
1ff6de03 NA |
9315 | if (bfd_section_is_ctf (section)) |
9316 | /* Nothing to do with this section: the contents are generated | |
9317 | later. */ | |
0a1b45a2 | 9318 | return true; |
1ff6de03 | 9319 | |
a0dcf297 NC |
9320 | if ((section->flags & SEC_ELF_COMPRESS) == 0) |
9321 | { | |
9322 | _bfd_error_handler | |
9323 | (_("%pB:%pA: error: attempting to write into an unallocated compressed section"), | |
9324 | abfd, section); | |
9325 | bfd_set_error (bfd_error_invalid_operation); | |
0a1b45a2 | 9326 | return false; |
a0dcf297 NC |
9327 | } |
9328 | ||
9329 | if ((offset + count) > hdr->sh_size) | |
9330 | { | |
9331 | _bfd_error_handler | |
9332 | (_("%pB:%pA: error: attempting to write over the end of the section"), | |
9333 | abfd, section); | |
9334 | ||
9335 | bfd_set_error (bfd_error_invalid_operation); | |
0a1b45a2 | 9336 | return false; |
a0dcf297 NC |
9337 | } |
9338 | ||
9339 | contents = hdr->contents; | |
9340 | if (contents == NULL) | |
9341 | { | |
9342 | _bfd_error_handler | |
9343 | (_("%pB:%pA: error: attempting to write section into an empty buffer"), | |
9344 | abfd, section); | |
9345 | ||
9346 | bfd_set_error (bfd_error_invalid_operation); | |
0a1b45a2 | 9347 | return false; |
a0dcf297 NC |
9348 | } |
9349 | ||
0ce398f1 | 9350 | memcpy (contents + offset, location, count); |
0a1b45a2 | 9351 | return true; |
0ce398f1 | 9352 | } |
a0dcf297 | 9353 | |
dc810e39 AM |
9354 | pos = hdr->sh_offset + offset; |
9355 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
9356 | || bfd_bwrite (location, count, abfd) != count) | |
0a1b45a2 | 9357 | return false; |
252b5132 | 9358 | |
0a1b45a2 | 9359 | return true; |
252b5132 RH |
9360 | } |
9361 | ||
0a1b45a2 | 9362 | bool |
217aa764 AM |
9363 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
9364 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
9365 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
9366 | { |
9367 | abort (); | |
0a1b45a2 | 9368 | return false; |
252b5132 RH |
9369 | } |
9370 | ||
252b5132 RH |
9371 | /* Try to convert a non-ELF reloc into an ELF one. */ |
9372 | ||
0a1b45a2 | 9373 | bool |
217aa764 | 9374 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 9375 | { |
c044fabd | 9376 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
9377 | |
9378 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
9379 | { | |
9380 | bfd_reloc_code_real_type code; | |
9381 | reloc_howto_type *howto; | |
9382 | ||
9383 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 9384 | equivalent ELF reloc. */ |
252b5132 RH |
9385 | |
9386 | if (areloc->howto->pc_relative) | |
9387 | { | |
9388 | switch (areloc->howto->bitsize) | |
9389 | { | |
9390 | case 8: | |
9391 | code = BFD_RELOC_8_PCREL; | |
9392 | break; | |
9393 | case 12: | |
9394 | code = BFD_RELOC_12_PCREL; | |
9395 | break; | |
9396 | case 16: | |
9397 | code = BFD_RELOC_16_PCREL; | |
9398 | break; | |
9399 | case 24: | |
9400 | code = BFD_RELOC_24_PCREL; | |
9401 | break; | |
9402 | case 32: | |
9403 | code = BFD_RELOC_32_PCREL; | |
9404 | break; | |
9405 | case 64: | |
9406 | code = BFD_RELOC_64_PCREL; | |
9407 | break; | |
9408 | default: | |
9409 | goto fail; | |
9410 | } | |
9411 | ||
9412 | howto = bfd_reloc_type_lookup (abfd, code); | |
9413 | ||
94698d01 | 9414 | if (howto && areloc->howto->pcrel_offset != howto->pcrel_offset) |
252b5132 RH |
9415 | { |
9416 | if (howto->pcrel_offset) | |
9417 | areloc->addend += areloc->address; | |
9418 | else | |
9419 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
9420 | } | |
9421 | } | |
9422 | else | |
9423 | { | |
9424 | switch (areloc->howto->bitsize) | |
9425 | { | |
9426 | case 8: | |
9427 | code = BFD_RELOC_8; | |
9428 | break; | |
9429 | case 14: | |
9430 | code = BFD_RELOC_14; | |
9431 | break; | |
9432 | case 16: | |
9433 | code = BFD_RELOC_16; | |
9434 | break; | |
9435 | case 26: | |
9436 | code = BFD_RELOC_26; | |
9437 | break; | |
9438 | case 32: | |
9439 | code = BFD_RELOC_32; | |
9440 | break; | |
9441 | case 64: | |
9442 | code = BFD_RELOC_64; | |
9443 | break; | |
9444 | default: | |
9445 | goto fail; | |
9446 | } | |
9447 | ||
9448 | howto = bfd_reloc_type_lookup (abfd, code); | |
9449 | } | |
9450 | ||
9451 | if (howto) | |
9452 | areloc->howto = howto; | |
9453 | else | |
9454 | goto fail; | |
9455 | } | |
9456 | ||
0a1b45a2 | 9457 | return true; |
252b5132 RH |
9458 | |
9459 | fail: | |
0aa13fee AM |
9460 | /* xgettext:c-format */ |
9461 | _bfd_error_handler (_("%pB: %s unsupported"), | |
9462 | abfd, areloc->howto->name); | |
9aea1e31 | 9463 | bfd_set_error (bfd_error_sorry); |
0a1b45a2 | 9464 | return false; |
252b5132 RH |
9465 | } |
9466 | ||
0a1b45a2 | 9467 | bool |
217aa764 | 9468 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 | 9469 | { |
d9071b0c | 9470 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
0ed18fa1 AM |
9471 | if (tdata != NULL |
9472 | && (bfd_get_format (abfd) == bfd_object | |
9473 | || bfd_get_format (abfd) == bfd_core)) | |
252b5132 | 9474 | { |
c0355132 | 9475 | if (elf_tdata (abfd)->o != NULL && elf_shstrtab (abfd) != NULL) |
2b0f7ef9 | 9476 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
d9071b0c | 9477 | _bfd_dwarf2_cleanup_debug_info (abfd, &tdata->dwarf2_find_line_info); |
252b5132 RH |
9478 | } |
9479 | ||
9480 | return _bfd_generic_close_and_cleanup (abfd); | |
9481 | } | |
9482 | ||
9483 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
9484 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
9485 | range-checking to interfere. There is nothing else to do in processing | |
9486 | this reloc. */ | |
9487 | ||
9488 | bfd_reloc_status_type | |
217aa764 AM |
9489 | _bfd_elf_rel_vtable_reloc_fn |
9490 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 9491 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
9492 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
9493 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
9494 | { |
9495 | return bfd_reloc_ok; | |
9496 | } | |
252b5132 RH |
9497 | \f |
9498 | /* Elf core file support. Much of this only works on native | |
9499 | toolchains, since we rely on knowing the | |
9500 | machine-dependent procfs structure in order to pick | |
c044fabd | 9501 | out details about the corefile. */ |
252b5132 RH |
9502 | |
9503 | #ifdef HAVE_SYS_PROCFS_H | |
9504 | # include <sys/procfs.h> | |
9505 | #endif | |
9506 | ||
261b8d08 PA |
9507 | /* Return a PID that identifies a "thread" for threaded cores, or the |
9508 | PID of the main process for non-threaded cores. */ | |
252b5132 RH |
9509 | |
9510 | static int | |
217aa764 | 9511 | elfcore_make_pid (bfd *abfd) |
252b5132 | 9512 | { |
261b8d08 PA |
9513 | int pid; |
9514 | ||
228e534f | 9515 | pid = elf_tdata (abfd)->core->lwpid; |
261b8d08 | 9516 | if (pid == 0) |
228e534f | 9517 | pid = elf_tdata (abfd)->core->pid; |
261b8d08 PA |
9518 | |
9519 | return pid; | |
252b5132 RH |
9520 | } |
9521 | ||
252b5132 RH |
9522 | /* If there isn't a section called NAME, make one, using |
9523 | data from SECT. Note, this function will generate a | |
9524 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 9525 | overwrite it. */ |
252b5132 | 9526 | |
0a1b45a2 | 9527 | static bool |
217aa764 | 9528 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 9529 | { |
c044fabd | 9530 | asection *sect2; |
252b5132 RH |
9531 | |
9532 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
0a1b45a2 | 9533 | return true; |
252b5132 | 9534 | |
117ed4f8 | 9535 | sect2 = bfd_make_section_with_flags (abfd, name, sect->flags); |
252b5132 | 9536 | if (sect2 == NULL) |
0a1b45a2 | 9537 | return false; |
252b5132 | 9538 | |
eea6121a | 9539 | sect2->size = sect->size; |
252b5132 | 9540 | sect2->filepos = sect->filepos; |
252b5132 | 9541 | sect2->alignment_power = sect->alignment_power; |
0a1b45a2 | 9542 | return true; |
252b5132 RH |
9543 | } |
9544 | ||
bb0082d6 AM |
9545 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
9546 | actually creates up to two pseudosections: | |
9547 | - For the single-threaded case, a section named NAME, unless | |
9548 | such a section already exists. | |
9549 | - For the multi-threaded case, a section named "NAME/PID", where | |
9550 | PID is elfcore_make_pid (abfd). | |
24d3e51b | 9551 | Both pseudosections have identical contents. */ |
0a1b45a2 | 9552 | bool |
217aa764 AM |
9553 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
9554 | char *name, | |
9555 | size_t size, | |
9556 | ufile_ptr filepos) | |
bb0082d6 AM |
9557 | { |
9558 | char buf[100]; | |
9559 | char *threaded_name; | |
d4c88bbb | 9560 | size_t len; |
bb0082d6 AM |
9561 | asection *sect; |
9562 | ||
9563 | /* Build the section name. */ | |
9564 | ||
9565 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 9566 | len = strlen (buf) + 1; |
a50b1753 | 9567 | threaded_name = (char *) bfd_alloc (abfd, len); |
bb0082d6 | 9568 | if (threaded_name == NULL) |
0a1b45a2 | 9569 | return false; |
d4c88bbb | 9570 | memcpy (threaded_name, buf, len); |
bb0082d6 | 9571 | |
117ed4f8 AM |
9572 | sect = bfd_make_section_anyway_with_flags (abfd, threaded_name, |
9573 | SEC_HAS_CONTENTS); | |
bb0082d6 | 9574 | if (sect == NULL) |
0a1b45a2 | 9575 | return false; |
eea6121a | 9576 | sect->size = size; |
bb0082d6 | 9577 | sect->filepos = filepos; |
bb0082d6 AM |
9578 | sect->alignment_power = 2; |
9579 | ||
936e320b | 9580 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
9581 | } |
9582 | ||
0a1b45a2 | 9583 | static bool |
58e07198 CZ |
9584 | elfcore_make_auxv_note_section (bfd *abfd, Elf_Internal_Note *note, |
9585 | size_t offs) | |
9586 | { | |
9587 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", | |
9588 | SEC_HAS_CONTENTS); | |
9589 | ||
9590 | if (sect == NULL) | |
0a1b45a2 | 9591 | return false; |
58e07198 CZ |
9592 | |
9593 | sect->size = note->descsz - offs; | |
9594 | sect->filepos = note->descpos + offs; | |
9595 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
9596 | ||
0a1b45a2 | 9597 | return true; |
58e07198 CZ |
9598 | } |
9599 | ||
252b5132 | 9600 | /* prstatus_t exists on: |
4a938328 | 9601 | solaris 2.5+ |
252b5132 RH |
9602 | linux 2.[01] + glibc |
9603 | unixware 4.2 | |
9604 | */ | |
9605 | ||
9606 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 9607 | |
0a1b45a2 | 9608 | static bool |
217aa764 | 9609 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 9610 | { |
eea6121a | 9611 | size_t size; |
7ee38065 | 9612 | int offset; |
252b5132 | 9613 | |
4a938328 MS |
9614 | if (note->descsz == sizeof (prstatus_t)) |
9615 | { | |
9616 | prstatus_t prstat; | |
252b5132 | 9617 | |
eea6121a | 9618 | size = sizeof (prstat.pr_reg); |
7ee38065 | 9619 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 9620 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 9621 | |
fa49d224 NC |
9622 | /* Do not overwrite the core signal if it |
9623 | has already been set by another thread. */ | |
228e534f AM |
9624 | if (elf_tdata (abfd)->core->signal == 0) |
9625 | elf_tdata (abfd)->core->signal = prstat.pr_cursig; | |
9626 | if (elf_tdata (abfd)->core->pid == 0) | |
9627 | elf_tdata (abfd)->core->pid = prstat.pr_pid; | |
252b5132 | 9628 | |
4a938328 MS |
9629 | /* pr_who exists on: |
9630 | solaris 2.5+ | |
9631 | unixware 4.2 | |
9632 | pr_who doesn't exist on: | |
9633 | linux 2.[01] | |
9634 | */ | |
252b5132 | 9635 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
228e534f | 9636 | elf_tdata (abfd)->core->lwpid = prstat.pr_who; |
261b8d08 | 9637 | #else |
228e534f | 9638 | elf_tdata (abfd)->core->lwpid = prstat.pr_pid; |
252b5132 | 9639 | #endif |
4a938328 | 9640 | } |
7ee38065 | 9641 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
9642 | else if (note->descsz == sizeof (prstatus32_t)) |
9643 | { | |
9644 | /* 64-bit host, 32-bit corefile */ | |
9645 | prstatus32_t prstat; | |
9646 | ||
eea6121a | 9647 | size = sizeof (prstat.pr_reg); |
7ee38065 | 9648 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
9649 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
9650 | ||
fa49d224 NC |
9651 | /* Do not overwrite the core signal if it |
9652 | has already been set by another thread. */ | |
228e534f AM |
9653 | if (elf_tdata (abfd)->core->signal == 0) |
9654 | elf_tdata (abfd)->core->signal = prstat.pr_cursig; | |
9655 | if (elf_tdata (abfd)->core->pid == 0) | |
9656 | elf_tdata (abfd)->core->pid = prstat.pr_pid; | |
4a938328 MS |
9657 | |
9658 | /* pr_who exists on: | |
9659 | solaris 2.5+ | |
9660 | unixware 4.2 | |
9661 | pr_who doesn't exist on: | |
9662 | linux 2.[01] | |
9663 | */ | |
7ee38065 | 9664 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
228e534f | 9665 | elf_tdata (abfd)->core->lwpid = prstat.pr_who; |
261b8d08 | 9666 | #else |
228e534f | 9667 | elf_tdata (abfd)->core->lwpid = prstat.pr_pid; |
4a938328 MS |
9668 | #endif |
9669 | } | |
7ee38065 | 9670 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
9671 | else |
9672 | { | |
9673 | /* Fail - we don't know how to handle any other | |
9674 | note size (ie. data object type). */ | |
0a1b45a2 | 9675 | return true; |
4a938328 | 9676 | } |
252b5132 | 9677 | |
bb0082d6 | 9678 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 9679 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 9680 | size, note->descpos + offset); |
252b5132 RH |
9681 | } |
9682 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
9683 | ||
bb0082d6 | 9684 | /* Create a pseudosection containing the exact contents of NOTE. */ |
0a1b45a2 | 9685 | static bool |
217aa764 AM |
9686 | elfcore_make_note_pseudosection (bfd *abfd, |
9687 | char *name, | |
9688 | Elf_Internal_Note *note) | |
252b5132 | 9689 | { |
936e320b AM |
9690 | return _bfd_elfcore_make_pseudosection (abfd, name, |
9691 | note->descsz, note->descpos); | |
252b5132 RH |
9692 | } |
9693 | ||
ff08c6bb JB |
9694 | /* There isn't a consistent prfpregset_t across platforms, |
9695 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
9696 | data structure apart. */ |
9697 | ||
0a1b45a2 | 9698 | static bool |
217aa764 | 9699 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
9700 | { |
9701 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
9702 | } | |
9703 | ||
ff08c6bb | 9704 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
971d4640 | 9705 | type of NT_PRXFPREG. Just include the whole note's contents |
ff08c6bb | 9706 | literally. */ |
c044fabd | 9707 | |
0a1b45a2 | 9708 | static bool |
217aa764 | 9709 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
9710 | { |
9711 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
9712 | } | |
9713 | ||
4339cae0 L |
9714 | /* Linux dumps the Intel XSAVE extended state in a note named "LINUX" |
9715 | with a note type of NT_X86_XSTATE. Just include the whole note's | |
9716 | contents literally. */ | |
9717 | ||
0a1b45a2 | 9718 | static bool |
4339cae0 L |
9719 | elfcore_grok_xstatereg (bfd *abfd, Elf_Internal_Note *note) |
9720 | { | |
9721 | return elfcore_make_note_pseudosection (abfd, ".reg-xstate", note); | |
9722 | } | |
9723 | ||
0a1b45a2 | 9724 | static bool |
97753bd5 AM |
9725 | elfcore_grok_ppc_vmx (bfd *abfd, Elf_Internal_Note *note) |
9726 | { | |
9727 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vmx", note); | |
9728 | } | |
9729 | ||
0a1b45a2 | 9730 | static bool |
89eeb0bc LM |
9731 | elfcore_grok_ppc_vsx (bfd *abfd, Elf_Internal_Note *note) |
9732 | { | |
9733 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vsx", note); | |
9734 | } | |
97753bd5 | 9735 | |
0a1b45a2 | 9736 | static bool |
cb2366c1 EBM |
9737 | elfcore_grok_ppc_tar (bfd *abfd, Elf_Internal_Note *note) |
9738 | { | |
9739 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tar", note); | |
9740 | } | |
9741 | ||
0a1b45a2 | 9742 | static bool |
cb2366c1 EBM |
9743 | elfcore_grok_ppc_ppr (bfd *abfd, Elf_Internal_Note *note) |
9744 | { | |
9745 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-ppr", note); | |
9746 | } | |
9747 | ||
0a1b45a2 | 9748 | static bool |
cb2366c1 EBM |
9749 | elfcore_grok_ppc_dscr (bfd *abfd, Elf_Internal_Note *note) |
9750 | { | |
9751 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-dscr", note); | |
9752 | } | |
9753 | ||
0a1b45a2 | 9754 | static bool |
cb2366c1 EBM |
9755 | elfcore_grok_ppc_ebb (bfd *abfd, Elf_Internal_Note *note) |
9756 | { | |
9757 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-ebb", note); | |
9758 | } | |
9759 | ||
0a1b45a2 | 9760 | static bool |
cb2366c1 EBM |
9761 | elfcore_grok_ppc_pmu (bfd *abfd, Elf_Internal_Note *note) |
9762 | { | |
9763 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-pmu", note); | |
9764 | } | |
9765 | ||
0a1b45a2 | 9766 | static bool |
cb2366c1 EBM |
9767 | elfcore_grok_ppc_tm_cgpr (bfd *abfd, Elf_Internal_Note *note) |
9768 | { | |
9769 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-cgpr", note); | |
9770 | } | |
9771 | ||
0a1b45a2 | 9772 | static bool |
cb2366c1 EBM |
9773 | elfcore_grok_ppc_tm_cfpr (bfd *abfd, Elf_Internal_Note *note) |
9774 | { | |
9775 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-cfpr", note); | |
9776 | } | |
9777 | ||
0a1b45a2 | 9778 | static bool |
cb2366c1 EBM |
9779 | elfcore_grok_ppc_tm_cvmx (bfd *abfd, Elf_Internal_Note *note) |
9780 | { | |
9781 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-cvmx", note); | |
9782 | } | |
9783 | ||
0a1b45a2 | 9784 | static bool |
cb2366c1 EBM |
9785 | elfcore_grok_ppc_tm_cvsx (bfd *abfd, Elf_Internal_Note *note) |
9786 | { | |
9787 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-cvsx", note); | |
9788 | } | |
9789 | ||
0a1b45a2 | 9790 | static bool |
cb2366c1 EBM |
9791 | elfcore_grok_ppc_tm_spr (bfd *abfd, Elf_Internal_Note *note) |
9792 | { | |
9793 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-spr", note); | |
9794 | } | |
9795 | ||
0a1b45a2 | 9796 | static bool |
cb2366c1 EBM |
9797 | elfcore_grok_ppc_tm_ctar (bfd *abfd, Elf_Internal_Note *note) |
9798 | { | |
9799 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-ctar", note); | |
9800 | } | |
9801 | ||
0a1b45a2 | 9802 | static bool |
cb2366c1 EBM |
9803 | elfcore_grok_ppc_tm_cppr (bfd *abfd, Elf_Internal_Note *note) |
9804 | { | |
9805 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-cppr", note); | |
9806 | } | |
9807 | ||
0a1b45a2 | 9808 | static bool |
cb2366c1 EBM |
9809 | elfcore_grok_ppc_tm_cdscr (bfd *abfd, Elf_Internal_Note *note) |
9810 | { | |
9811 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-tm-cdscr", note); | |
9812 | } | |
9813 | ||
0a1b45a2 | 9814 | static bool |
0675e188 UW |
9815 | elfcore_grok_s390_high_gprs (bfd *abfd, Elf_Internal_Note *note) |
9816 | { | |
9817 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-high-gprs", note); | |
9818 | } | |
9819 | ||
0a1b45a2 | 9820 | static bool |
d7eeb400 MS |
9821 | elfcore_grok_s390_timer (bfd *abfd, Elf_Internal_Note *note) |
9822 | { | |
9823 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-timer", note); | |
9824 | } | |
9825 | ||
0a1b45a2 | 9826 | static bool |
d7eeb400 MS |
9827 | elfcore_grok_s390_todcmp (bfd *abfd, Elf_Internal_Note *note) |
9828 | { | |
9829 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-todcmp", note); | |
9830 | } | |
9831 | ||
0a1b45a2 | 9832 | static bool |
d7eeb400 MS |
9833 | elfcore_grok_s390_todpreg (bfd *abfd, Elf_Internal_Note *note) |
9834 | { | |
9835 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-todpreg", note); | |
9836 | } | |
9837 | ||
0a1b45a2 | 9838 | static bool |
d7eeb400 MS |
9839 | elfcore_grok_s390_ctrs (bfd *abfd, Elf_Internal_Note *note) |
9840 | { | |
9841 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-ctrs", note); | |
9842 | } | |
9843 | ||
0a1b45a2 | 9844 | static bool |
d7eeb400 MS |
9845 | elfcore_grok_s390_prefix (bfd *abfd, Elf_Internal_Note *note) |
9846 | { | |
9847 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-prefix", note); | |
9848 | } | |
9849 | ||
0a1b45a2 | 9850 | static bool |
355b81d9 UW |
9851 | elfcore_grok_s390_last_break (bfd *abfd, Elf_Internal_Note *note) |
9852 | { | |
9853 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-last-break", note); | |
9854 | } | |
9855 | ||
0a1b45a2 | 9856 | static bool |
355b81d9 UW |
9857 | elfcore_grok_s390_system_call (bfd *abfd, Elf_Internal_Note *note) |
9858 | { | |
9859 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-system-call", note); | |
9860 | } | |
9861 | ||
0a1b45a2 | 9862 | static bool |
abb3f6cc NC |
9863 | elfcore_grok_s390_tdb (bfd *abfd, Elf_Internal_Note *note) |
9864 | { | |
9865 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-tdb", note); | |
9866 | } | |
9867 | ||
0a1b45a2 | 9868 | static bool |
4ef9f41a AA |
9869 | elfcore_grok_s390_vxrs_low (bfd *abfd, Elf_Internal_Note *note) |
9870 | { | |
9871 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-vxrs-low", note); | |
9872 | } | |
9873 | ||
0a1b45a2 | 9874 | static bool |
4ef9f41a AA |
9875 | elfcore_grok_s390_vxrs_high (bfd *abfd, Elf_Internal_Note *note) |
9876 | { | |
9877 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-vxrs-high", note); | |
9878 | } | |
9879 | ||
0a1b45a2 | 9880 | static bool |
88ab90e8 AA |
9881 | elfcore_grok_s390_gs_cb (bfd *abfd, Elf_Internal_Note *note) |
9882 | { | |
9883 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-gs-cb", note); | |
9884 | } | |
9885 | ||
0a1b45a2 | 9886 | static bool |
88ab90e8 AA |
9887 | elfcore_grok_s390_gs_bc (bfd *abfd, Elf_Internal_Note *note) |
9888 | { | |
9889 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-gs-bc", note); | |
9890 | } | |
9891 | ||
0a1b45a2 | 9892 | static bool |
faa9a424 UW |
9893 | elfcore_grok_arm_vfp (bfd *abfd, Elf_Internal_Note *note) |
9894 | { | |
9895 | return elfcore_make_note_pseudosection (abfd, ".reg-arm-vfp", note); | |
9896 | } | |
9897 | ||
0a1b45a2 | 9898 | static bool |
652451f8 YZ |
9899 | elfcore_grok_aarch_tls (bfd *abfd, Elf_Internal_Note *note) |
9900 | { | |
9901 | return elfcore_make_note_pseudosection (abfd, ".reg-aarch-tls", note); | |
9902 | } | |
9903 | ||
0a1b45a2 | 9904 | static bool |
652451f8 YZ |
9905 | elfcore_grok_aarch_hw_break (bfd *abfd, Elf_Internal_Note *note) |
9906 | { | |
9907 | return elfcore_make_note_pseudosection (abfd, ".reg-aarch-hw-break", note); | |
9908 | } | |
9909 | ||
0a1b45a2 | 9910 | static bool |
652451f8 YZ |
9911 | elfcore_grok_aarch_hw_watch (bfd *abfd, Elf_Internal_Note *note) |
9912 | { | |
9913 | return elfcore_make_note_pseudosection (abfd, ".reg-aarch-hw-watch", note); | |
9914 | } | |
9915 | ||
0a1b45a2 | 9916 | static bool |
ad1cc4e4 AH |
9917 | elfcore_grok_aarch_sve (bfd *abfd, Elf_Internal_Note *note) |
9918 | { | |
9919 | return elfcore_make_note_pseudosection (abfd, ".reg-aarch-sve", note); | |
9920 | } | |
9921 | ||
0a1b45a2 | 9922 | static bool |
e6c3b5bf AH |
9923 | elfcore_grok_aarch_pauth (bfd *abfd, Elf_Internal_Note *note) |
9924 | { | |
9925 | return elfcore_make_note_pseudosection (abfd, ".reg-aarch-pauth", note); | |
9926 | } | |
9927 | ||
0a1b45a2 | 9928 | static bool |
27456742 AK |
9929 | elfcore_grok_arc_v2 (bfd *abfd, Elf_Internal_Note *note) |
9930 | { | |
9931 | return elfcore_make_note_pseudosection (abfd, ".reg-arc-v2", note); | |
9932 | } | |
9933 | ||
db6092f3 AB |
9934 | /* Convert NOTE into a bfd_section called ".reg-riscv-csr". Return TRUE if |
9935 | successful otherwise, return FALSE. */ | |
9936 | ||
0a1b45a2 | 9937 | static bool |
db6092f3 AB |
9938 | elfcore_grok_riscv_csr (bfd *abfd, Elf_Internal_Note *note) |
9939 | { | |
9940 | return elfcore_make_note_pseudosection (abfd, ".reg-riscv-csr", note); | |
9941 | } | |
9942 | ||
b63a5e38 AB |
9943 | /* Convert NOTE into a bfd_section called ".gdb-tdesc". Return TRUE if |
9944 | successful otherwise, return FALSE. */ | |
9945 | ||
0a1b45a2 | 9946 | static bool |
b63a5e38 AB |
9947 | elfcore_grok_gdb_tdesc (bfd *abfd, Elf_Internal_Note *note) |
9948 | { | |
9949 | return elfcore_make_note_pseudosection (abfd, ".gdb-tdesc", note); | |
9950 | } | |
9951 | ||
252b5132 | 9952 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 9953 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 9954 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
9955 | typedef prpsinfo32_t elfcore_psinfo32_t; |
9956 | #endif | |
252b5132 RH |
9957 | #endif |
9958 | ||
9959 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 9960 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 9961 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
9962 | typedef psinfo32_t elfcore_psinfo32_t; |
9963 | #endif | |
252b5132 RH |
9964 | #endif |
9965 | ||
252b5132 RH |
9966 | /* return a malloc'ed copy of a string at START which is at |
9967 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 9968 | the copy will always have a terminating '\0'. */ |
252b5132 | 9969 | |
936e320b | 9970 | char * |
217aa764 | 9971 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 9972 | { |
dc810e39 | 9973 | char *dups; |
a50b1753 | 9974 | char *end = (char *) memchr (start, '\0', max); |
dc810e39 | 9975 | size_t len; |
252b5132 RH |
9976 | |
9977 | if (end == NULL) | |
9978 | len = max; | |
9979 | else | |
9980 | len = end - start; | |
9981 | ||
a50b1753 | 9982 | dups = (char *) bfd_alloc (abfd, len + 1); |
dc810e39 | 9983 | if (dups == NULL) |
252b5132 RH |
9984 | return NULL; |
9985 | ||
dc810e39 AM |
9986 | memcpy (dups, start, len); |
9987 | dups[len] = '\0'; | |
252b5132 | 9988 | |
dc810e39 | 9989 | return dups; |
252b5132 RH |
9990 | } |
9991 | ||
bb0082d6 | 9992 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
0a1b45a2 | 9993 | static bool |
217aa764 | 9994 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 9995 | { |
4a938328 MS |
9996 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
9997 | { | |
9998 | elfcore_psinfo_t psinfo; | |
252b5132 | 9999 | |
7ee38065 | 10000 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 10001 | |
335e41d4 | 10002 | #if defined (HAVE_PSINFO_T_PR_PID) || defined (HAVE_PRPSINFO_T_PR_PID) |
228e534f | 10003 | elf_tdata (abfd)->core->pid = psinfo.pr_pid; |
335e41d4 | 10004 | #endif |
228e534f | 10005 | elf_tdata (abfd)->core->program |
936e320b AM |
10006 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
10007 | sizeof (psinfo.pr_fname)); | |
252b5132 | 10008 | |
228e534f | 10009 | elf_tdata (abfd)->core->command |
936e320b AM |
10010 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
10011 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 10012 | } |
7ee38065 | 10013 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
10014 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
10015 | { | |
10016 | /* 64-bit host, 32-bit corefile */ | |
10017 | elfcore_psinfo32_t psinfo; | |
10018 | ||
7ee38065 | 10019 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 10020 | |
335e41d4 | 10021 | #if defined (HAVE_PSINFO32_T_PR_PID) || defined (HAVE_PRPSINFO32_T_PR_PID) |
228e534f | 10022 | elf_tdata (abfd)->core->pid = psinfo.pr_pid; |
335e41d4 | 10023 | #endif |
228e534f | 10024 | elf_tdata (abfd)->core->program |
936e320b AM |
10025 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
10026 | sizeof (psinfo.pr_fname)); | |
4a938328 | 10027 | |
228e534f | 10028 | elf_tdata (abfd)->core->command |
936e320b AM |
10029 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
10030 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
10031 | } |
10032 | #endif | |
10033 | ||
10034 | else | |
10035 | { | |
10036 | /* Fail - we don't know how to handle any other | |
10037 | note size (ie. data object type). */ | |
0a1b45a2 | 10038 | return true; |
4a938328 | 10039 | } |
252b5132 RH |
10040 | |
10041 | /* Note that for some reason, a spurious space is tacked | |
10042 | onto the end of the args in some (at least one anyway) | |
c044fabd | 10043 | implementations, so strip it off if it exists. */ |
252b5132 RH |
10044 | |
10045 | { | |
228e534f | 10046 | char *command = elf_tdata (abfd)->core->command; |
252b5132 RH |
10047 | int n = strlen (command); |
10048 | ||
10049 | if (0 < n && command[n - 1] == ' ') | |
10050 | command[n - 1] = '\0'; | |
10051 | } | |
10052 | ||
0a1b45a2 | 10053 | return true; |
252b5132 RH |
10054 | } |
10055 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
10056 | ||
252b5132 | 10057 | #if defined (HAVE_PSTATUS_T) |
0a1b45a2 | 10058 | static bool |
217aa764 | 10059 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 10060 | { |
f572a39d AM |
10061 | if (note->descsz == sizeof (pstatus_t) |
10062 | #if defined (HAVE_PXSTATUS_T) | |
10063 | || note->descsz == sizeof (pxstatus_t) | |
10064 | #endif | |
10065 | ) | |
4a938328 MS |
10066 | { |
10067 | pstatus_t pstat; | |
252b5132 | 10068 | |
4a938328 | 10069 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 10070 | |
228e534f | 10071 | elf_tdata (abfd)->core->pid = pstat.pr_pid; |
4a938328 | 10072 | } |
7ee38065 | 10073 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
10074 | else if (note->descsz == sizeof (pstatus32_t)) |
10075 | { | |
10076 | /* 64-bit host, 32-bit corefile */ | |
10077 | pstatus32_t pstat; | |
252b5132 | 10078 | |
4a938328 | 10079 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 10080 | |
228e534f | 10081 | elf_tdata (abfd)->core->pid = pstat.pr_pid; |
4a938328 MS |
10082 | } |
10083 | #endif | |
252b5132 RH |
10084 | /* Could grab some more details from the "representative" |
10085 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 10086 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 10087 | |
0a1b45a2 | 10088 | return true; |
252b5132 RH |
10089 | } |
10090 | #endif /* defined (HAVE_PSTATUS_T) */ | |
10091 | ||
252b5132 | 10092 | #if defined (HAVE_LWPSTATUS_T) |
0a1b45a2 | 10093 | static bool |
217aa764 | 10094 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
10095 | { |
10096 | lwpstatus_t lwpstat; | |
10097 | char buf[100]; | |
c044fabd | 10098 | char *name; |
d4c88bbb | 10099 | size_t len; |
c044fabd | 10100 | asection *sect; |
252b5132 | 10101 | |
f572a39d AM |
10102 | if (note->descsz != sizeof (lwpstat) |
10103 | #if defined (HAVE_LWPXSTATUS_T) | |
10104 | && note->descsz != sizeof (lwpxstatus_t) | |
10105 | #endif | |
10106 | ) | |
0a1b45a2 | 10107 | return true; |
252b5132 RH |
10108 | |
10109 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
10110 | ||
228e534f | 10111 | elf_tdata (abfd)->core->lwpid = lwpstat.pr_lwpid; |
a1504221 JB |
10112 | /* Do not overwrite the core signal if it has already been set by |
10113 | another thread. */ | |
228e534f AM |
10114 | if (elf_tdata (abfd)->core->signal == 0) |
10115 | elf_tdata (abfd)->core->signal = lwpstat.pr_cursig; | |
252b5132 | 10116 | |
c044fabd | 10117 | /* Make a ".reg/999" section. */ |
252b5132 RH |
10118 | |
10119 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 10120 | len = strlen (buf) + 1; |
217aa764 | 10121 | name = bfd_alloc (abfd, len); |
252b5132 | 10122 | if (name == NULL) |
0a1b45a2 | 10123 | return false; |
d4c88bbb | 10124 | memcpy (name, buf, len); |
252b5132 | 10125 | |
117ed4f8 | 10126 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 10127 | if (sect == NULL) |
0a1b45a2 | 10128 | return false; |
252b5132 RH |
10129 | |
10130 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 10131 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
10132 | sect->filepos = note->descpos |
10133 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
10134 | #endif | |
10135 | ||
10136 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 10137 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
10138 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
10139 | #endif | |
10140 | ||
252b5132 RH |
10141 | sect->alignment_power = 2; |
10142 | ||
10143 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
0a1b45a2 | 10144 | return false; |
252b5132 RH |
10145 | |
10146 | /* Make a ".reg2/999" section */ | |
10147 | ||
10148 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 10149 | len = strlen (buf) + 1; |
217aa764 | 10150 | name = bfd_alloc (abfd, len); |
252b5132 | 10151 | if (name == NULL) |
0a1b45a2 | 10152 | return false; |
d4c88bbb | 10153 | memcpy (name, buf, len); |
252b5132 | 10154 | |
117ed4f8 | 10155 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 10156 | if (sect == NULL) |
0a1b45a2 | 10157 | return false; |
252b5132 RH |
10158 | |
10159 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 10160 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
10161 | sect->filepos = note->descpos |
10162 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
10163 | #endif | |
10164 | ||
10165 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 10166 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
10167 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
10168 | #endif | |
10169 | ||
252b5132 RH |
10170 | sect->alignment_power = 2; |
10171 | ||
936e320b | 10172 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
10173 | } |
10174 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
10175 | ||
8fbac78b JT |
10176 | /* These constants, and the structure offsets used below, are defined by |
10177 | Cygwin's core_dump.h */ | |
10178 | #define NOTE_INFO_PROCESS 1 | |
10179 | #define NOTE_INFO_THREAD 2 | |
10180 | #define NOTE_INFO_MODULE 3 | |
d61f3d03 | 10181 | #define NOTE_INFO_MODULE64 4 |
8fbac78b | 10182 | |
0a1b45a2 | 10183 | static bool |
217aa764 | 10184 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
10185 | { |
10186 | char buf[30]; | |
c044fabd | 10187 | char *name; |
d4c88bbb | 10188 | size_t len; |
3cdad084 | 10189 | unsigned int name_size; |
c044fabd | 10190 | asection *sect; |
2fef9373 | 10191 | unsigned int type; |
4a6636fb PA |
10192 | int is_active_thread; |
10193 | bfd_vma base_addr; | |
16e9c715 | 10194 | |
04ec0fa2 | 10195 | if (note->descsz < 4) |
0a1b45a2 | 10196 | return true; |
16e9c715 | 10197 | |
08dedd66 | 10198 | if (! startswith (note->namedata, "win32")) |
0a1b45a2 | 10199 | return true; |
4a6636fb PA |
10200 | |
10201 | type = bfd_get_32 (abfd, note->descdata); | |
c044fabd | 10202 | |
7e0d77ef NC |
10203 | struct |
10204 | { | |
404ec933 JT |
10205 | const char *type_name; |
10206 | unsigned long min_size; | |
10207 | } size_check[] = | |
10208 | { | |
10209 | { "NOTE_INFO_PROCESS", 12 }, | |
10210 | { "NOTE_INFO_THREAD", 12 }, | |
10211 | { "NOTE_INFO_MODULE", 12 }, | |
10212 | { "NOTE_INFO_MODULE64", 16 }, | |
10213 | }; | |
10214 | ||
7e0d77ef | 10215 | if (type == 0 || type > (sizeof(size_check)/sizeof(size_check[0]))) |
0a1b45a2 | 10216 | return true; |
404ec933 JT |
10217 | |
10218 | if (note->descsz < size_check[type - 1].min_size) | |
10219 | { | |
10220 | _bfd_error_handler (_("%pB: warning: win32pstatus %s of size %lu bytes is too small"), | |
10221 | abfd, size_check[type - 1].type_name, note->descsz); | |
0a1b45a2 | 10222 | return true; |
404ec933 JT |
10223 | } |
10224 | ||
4a6636fb | 10225 | switch (type) |
16e9c715 | 10226 | { |
8fbac78b | 10227 | case NOTE_INFO_PROCESS: |
228e534f | 10228 | /* FIXME: need to add ->core->command. */ |
ff2084b9 | 10229 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 4); |
ff2084b9 | 10230 | elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 8); |
c044fabd | 10231 | break; |
16e9c715 | 10232 | |
8fbac78b | 10233 | case NOTE_INFO_THREAD: |
ff2084b9 JT |
10234 | /* Make a ".reg/<tid>" section containing the Win32 API thread CONTEXT |
10235 | structure. */ | |
4a6636fb | 10236 | /* thread_info.tid */ |
ff2084b9 | 10237 | sprintf (buf, ".reg/%ld", (long) bfd_get_32 (abfd, note->descdata + 4)); |
c044fabd | 10238 | |
d4c88bbb | 10239 | len = strlen (buf) + 1; |
a50b1753 | 10240 | name = (char *) bfd_alloc (abfd, len); |
16e9c715 | 10241 | if (name == NULL) |
0a1b45a2 | 10242 | return false; |
c044fabd | 10243 | |
d4c88bbb | 10244 | memcpy (name, buf, len); |
16e9c715 | 10245 | |
117ed4f8 | 10246 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
16e9c715 | 10247 | if (sect == NULL) |
0a1b45a2 | 10248 | return false; |
c044fabd | 10249 | |
4a6636fb | 10250 | /* sizeof (thread_info.thread_context) */ |
03c29a6f | 10251 | sect->size = note->descsz - 12; |
4a6636fb PA |
10252 | /* offsetof (thread_info.thread_context) */ |
10253 | sect->filepos = note->descpos + 12; | |
16e9c715 NC |
10254 | sect->alignment_power = 2; |
10255 | ||
4a6636fb PA |
10256 | /* thread_info.is_active_thread */ |
10257 | is_active_thread = bfd_get_32 (abfd, note->descdata + 8); | |
10258 | ||
10259 | if (is_active_thread) | |
16e9c715 | 10260 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) |
0a1b45a2 | 10261 | return false; |
16e9c715 NC |
10262 | break; |
10263 | ||
8fbac78b | 10264 | case NOTE_INFO_MODULE: |
d61f3d03 | 10265 | case NOTE_INFO_MODULE64: |
16e9c715 | 10266 | /* Make a ".module/xxxxxxxx" section. */ |
d61f3d03 JT |
10267 | if (type == NOTE_INFO_MODULE) |
10268 | { | |
d61f3d03 JT |
10269 | /* module_info.base_address */ |
10270 | base_addr = bfd_get_32 (abfd, note->descdata + 4); | |
10271 | sprintf (buf, ".module/%08lx", (unsigned long) base_addr); | |
10272 | /* module_info.module_name_size */ | |
10273 | name_size = bfd_get_32 (abfd, note->descdata + 8); | |
10274 | } | |
10275 | else /* NOTE_INFO_MODULE64 */ | |
10276 | { | |
d61f3d03 JT |
10277 | /* module_info.base_address */ |
10278 | base_addr = bfd_get_64 (abfd, note->descdata + 4); | |
10279 | sprintf (buf, ".module/%016lx", (unsigned long) base_addr); | |
10280 | /* module_info.module_name_size */ | |
10281 | name_size = bfd_get_32 (abfd, note->descdata + 12); | |
10282 | } | |
c044fabd | 10283 | |
d4c88bbb | 10284 | len = strlen (buf) + 1; |
a50b1753 | 10285 | name = (char *) bfd_alloc (abfd, len); |
16e9c715 | 10286 | if (name == NULL) |
0a1b45a2 | 10287 | return false; |
c044fabd | 10288 | |
d4c88bbb | 10289 | memcpy (name, buf, len); |
252b5132 | 10290 | |
117ed4f8 | 10291 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
c044fabd | 10292 | |
16e9c715 | 10293 | if (sect == NULL) |
0a1b45a2 | 10294 | return false; |
c044fabd | 10295 | |
04ec0fa2 | 10296 | if (note->descsz < 12 + name_size) |
404ec933 | 10297 | { |
3cdad084 | 10298 | _bfd_error_handler (_("%pB: win32pstatus NOTE_INFO_MODULE of size %lu is too small to contain a name of size %u"), |
404ec933 | 10299 | abfd, note->descsz, name_size); |
0a1b45a2 | 10300 | return true; |
404ec933 | 10301 | } |
04ec0fa2 | 10302 | |
eea6121a | 10303 | sect->size = note->descsz; |
16e9c715 | 10304 | sect->filepos = note->descpos; |
16e9c715 NC |
10305 | sect->alignment_power = 2; |
10306 | break; | |
10307 | ||
10308 | default: | |
0a1b45a2 | 10309 | return true; |
16e9c715 NC |
10310 | } |
10311 | ||
0a1b45a2 | 10312 | return true; |
16e9c715 | 10313 | } |
252b5132 | 10314 | |
0a1b45a2 | 10315 | static bool |
217aa764 | 10316 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 10317 | { |
9c5bfbb7 | 10318 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 10319 | |
252b5132 RH |
10320 | switch (note->type) |
10321 | { | |
10322 | default: | |
0a1b45a2 | 10323 | return true; |
252b5132 | 10324 | |
252b5132 | 10325 | case NT_PRSTATUS: |
bb0082d6 AM |
10326 | if (bed->elf_backend_grok_prstatus) |
10327 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
0a1b45a2 | 10328 | return true; |
bb0082d6 | 10329 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 10330 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 10331 | #else |
0a1b45a2 | 10332 | return true; |
252b5132 RH |
10333 | #endif |
10334 | ||
10335 | #if defined (HAVE_PSTATUS_T) | |
10336 | case NT_PSTATUS: | |
10337 | return elfcore_grok_pstatus (abfd, note); | |
10338 | #endif | |
10339 | ||
10340 | #if defined (HAVE_LWPSTATUS_T) | |
10341 | case NT_LWPSTATUS: | |
10342 | return elfcore_grok_lwpstatus (abfd, note); | |
10343 | #endif | |
10344 | ||
10345 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
10346 | return elfcore_grok_prfpreg (abfd, note); | |
10347 | ||
c044fabd | 10348 | case NT_WIN32PSTATUS: |
16e9c715 | 10349 | return elfcore_grok_win32pstatus (abfd, note); |
16e9c715 | 10350 | |
c044fabd | 10351 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
10352 | if (note->namesz == 6 |
10353 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
10354 | return elfcore_grok_prxfpreg (abfd, note); |
10355 | else | |
0a1b45a2 | 10356 | return true; |
ff08c6bb | 10357 | |
4339cae0 L |
10358 | case NT_X86_XSTATE: /* Linux XSAVE extension */ |
10359 | if (note->namesz == 6 | |
10360 | && strcmp (note->namedata, "LINUX") == 0) | |
10361 | return elfcore_grok_xstatereg (abfd, note); | |
10362 | else | |
0a1b45a2 | 10363 | return true; |
4339cae0 | 10364 | |
97753bd5 AM |
10365 | case NT_PPC_VMX: |
10366 | if (note->namesz == 6 | |
10367 | && strcmp (note->namedata, "LINUX") == 0) | |
10368 | return elfcore_grok_ppc_vmx (abfd, note); | |
10369 | else | |
0a1b45a2 | 10370 | return true; |
97753bd5 | 10371 | |
89eeb0bc LM |
10372 | case NT_PPC_VSX: |
10373 | if (note->namesz == 6 | |
07d6d2b8 AM |
10374 | && strcmp (note->namedata, "LINUX") == 0) |
10375 | return elfcore_grok_ppc_vsx (abfd, note); | |
89eeb0bc | 10376 | else |
0a1b45a2 | 10377 | return true; |
89eeb0bc | 10378 | |
cb2366c1 EBM |
10379 | case NT_PPC_TAR: |
10380 | if (note->namesz == 6 | |
4b24dd1a AM |
10381 | && strcmp (note->namedata, "LINUX") == 0) |
10382 | return elfcore_grok_ppc_tar (abfd, note); | |
cb2366c1 | 10383 | else |
0a1b45a2 | 10384 | return true; |
cb2366c1 EBM |
10385 | |
10386 | case NT_PPC_PPR: | |
10387 | if (note->namesz == 6 | |
4b24dd1a AM |
10388 | && strcmp (note->namedata, "LINUX") == 0) |
10389 | return elfcore_grok_ppc_ppr (abfd, note); | |
cb2366c1 | 10390 | else |
0a1b45a2 | 10391 | return true; |
cb2366c1 EBM |
10392 | |
10393 | case NT_PPC_DSCR: | |
10394 | if (note->namesz == 6 | |
4b24dd1a AM |
10395 | && strcmp (note->namedata, "LINUX") == 0) |
10396 | return elfcore_grok_ppc_dscr (abfd, note); | |
cb2366c1 | 10397 | else |
0a1b45a2 | 10398 | return true; |
cb2366c1 EBM |
10399 | |
10400 | case NT_PPC_EBB: | |
10401 | if (note->namesz == 6 | |
4b24dd1a AM |
10402 | && strcmp (note->namedata, "LINUX") == 0) |
10403 | return elfcore_grok_ppc_ebb (abfd, note); | |
cb2366c1 | 10404 | else |
0a1b45a2 | 10405 | return true; |
cb2366c1 EBM |
10406 | |
10407 | case NT_PPC_PMU: | |
10408 | if (note->namesz == 6 | |
4b24dd1a AM |
10409 | && strcmp (note->namedata, "LINUX") == 0) |
10410 | return elfcore_grok_ppc_pmu (abfd, note); | |
cb2366c1 | 10411 | else |
0a1b45a2 | 10412 | return true; |
cb2366c1 EBM |
10413 | |
10414 | case NT_PPC_TM_CGPR: | |
10415 | if (note->namesz == 6 | |
4b24dd1a AM |
10416 | && strcmp (note->namedata, "LINUX") == 0) |
10417 | return elfcore_grok_ppc_tm_cgpr (abfd, note); | |
cb2366c1 | 10418 | else |
0a1b45a2 | 10419 | return true; |
cb2366c1 EBM |
10420 | |
10421 | case NT_PPC_TM_CFPR: | |
10422 | if (note->namesz == 6 | |
4b24dd1a AM |
10423 | && strcmp (note->namedata, "LINUX") == 0) |
10424 | return elfcore_grok_ppc_tm_cfpr (abfd, note); | |
cb2366c1 | 10425 | else |
0a1b45a2 | 10426 | return true; |
cb2366c1 EBM |
10427 | |
10428 | case NT_PPC_TM_CVMX: | |
10429 | if (note->namesz == 6 | |
4b24dd1a AM |
10430 | && strcmp (note->namedata, "LINUX") == 0) |
10431 | return elfcore_grok_ppc_tm_cvmx (abfd, note); | |
cb2366c1 | 10432 | else |
0a1b45a2 | 10433 | return true; |
cb2366c1 EBM |
10434 | |
10435 | case NT_PPC_TM_CVSX: | |
10436 | if (note->namesz == 6 | |
4b24dd1a AM |
10437 | && strcmp (note->namedata, "LINUX") == 0) |
10438 | return elfcore_grok_ppc_tm_cvsx (abfd, note); | |
cb2366c1 | 10439 | else |
0a1b45a2 | 10440 | return true; |
cb2366c1 EBM |
10441 | |
10442 | case NT_PPC_TM_SPR: | |
10443 | if (note->namesz == 6 | |
4b24dd1a AM |
10444 | && strcmp (note->namedata, "LINUX") == 0) |
10445 | return elfcore_grok_ppc_tm_spr (abfd, note); | |
cb2366c1 | 10446 | else |
0a1b45a2 | 10447 | return true; |
cb2366c1 EBM |
10448 | |
10449 | case NT_PPC_TM_CTAR: | |
10450 | if (note->namesz == 6 | |
4b24dd1a AM |
10451 | && strcmp (note->namedata, "LINUX") == 0) |
10452 | return elfcore_grok_ppc_tm_ctar (abfd, note); | |
cb2366c1 | 10453 | else |
0a1b45a2 | 10454 | return true; |
cb2366c1 EBM |
10455 | |
10456 | case NT_PPC_TM_CPPR: | |
10457 | if (note->namesz == 6 | |
4b24dd1a AM |
10458 | && strcmp (note->namedata, "LINUX") == 0) |
10459 | return elfcore_grok_ppc_tm_cppr (abfd, note); | |
cb2366c1 | 10460 | else |
0a1b45a2 | 10461 | return true; |
cb2366c1 EBM |
10462 | |
10463 | case NT_PPC_TM_CDSCR: | |
10464 | if (note->namesz == 6 | |
4b24dd1a AM |
10465 | && strcmp (note->namedata, "LINUX") == 0) |
10466 | return elfcore_grok_ppc_tm_cdscr (abfd, note); | |
cb2366c1 | 10467 | else |
0a1b45a2 | 10468 | return true; |
cb2366c1 | 10469 | |
0675e188 UW |
10470 | case NT_S390_HIGH_GPRS: |
10471 | if (note->namesz == 6 | |
07d6d2b8 AM |
10472 | && strcmp (note->namedata, "LINUX") == 0) |
10473 | return elfcore_grok_s390_high_gprs (abfd, note); | |
0675e188 | 10474 | else |
0a1b45a2 | 10475 | return true; |
0675e188 | 10476 | |
d7eeb400 MS |
10477 | case NT_S390_TIMER: |
10478 | if (note->namesz == 6 | |
07d6d2b8 AM |
10479 | && strcmp (note->namedata, "LINUX") == 0) |
10480 | return elfcore_grok_s390_timer (abfd, note); | |
d7eeb400 | 10481 | else |
0a1b45a2 | 10482 | return true; |
d7eeb400 MS |
10483 | |
10484 | case NT_S390_TODCMP: | |
10485 | if (note->namesz == 6 | |
07d6d2b8 AM |
10486 | && strcmp (note->namedata, "LINUX") == 0) |
10487 | return elfcore_grok_s390_todcmp (abfd, note); | |
d7eeb400 | 10488 | else |
0a1b45a2 | 10489 | return true; |
d7eeb400 MS |
10490 | |
10491 | case NT_S390_TODPREG: | |
10492 | if (note->namesz == 6 | |
07d6d2b8 AM |
10493 | && strcmp (note->namedata, "LINUX") == 0) |
10494 | return elfcore_grok_s390_todpreg (abfd, note); | |
d7eeb400 | 10495 | else |
0a1b45a2 | 10496 | return true; |
d7eeb400 MS |
10497 | |
10498 | case NT_S390_CTRS: | |
10499 | if (note->namesz == 6 | |
07d6d2b8 AM |
10500 | && strcmp (note->namedata, "LINUX") == 0) |
10501 | return elfcore_grok_s390_ctrs (abfd, note); | |
d7eeb400 | 10502 | else |
0a1b45a2 | 10503 | return true; |
d7eeb400 MS |
10504 | |
10505 | case NT_S390_PREFIX: | |
10506 | if (note->namesz == 6 | |
07d6d2b8 AM |
10507 | && strcmp (note->namedata, "LINUX") == 0) |
10508 | return elfcore_grok_s390_prefix (abfd, note); | |
d7eeb400 | 10509 | else |
0a1b45a2 | 10510 | return true; |
d7eeb400 | 10511 | |
355b81d9 UW |
10512 | case NT_S390_LAST_BREAK: |
10513 | if (note->namesz == 6 | |
07d6d2b8 AM |
10514 | && strcmp (note->namedata, "LINUX") == 0) |
10515 | return elfcore_grok_s390_last_break (abfd, note); | |
355b81d9 | 10516 | else |
0a1b45a2 | 10517 | return true; |
355b81d9 UW |
10518 | |
10519 | case NT_S390_SYSTEM_CALL: | |
10520 | if (note->namesz == 6 | |
07d6d2b8 AM |
10521 | && strcmp (note->namedata, "LINUX") == 0) |
10522 | return elfcore_grok_s390_system_call (abfd, note); | |
355b81d9 | 10523 | else |
0a1b45a2 | 10524 | return true; |
355b81d9 | 10525 | |
abb3f6cc NC |
10526 | case NT_S390_TDB: |
10527 | if (note->namesz == 6 | |
07d6d2b8 AM |
10528 | && strcmp (note->namedata, "LINUX") == 0) |
10529 | return elfcore_grok_s390_tdb (abfd, note); | |
abb3f6cc | 10530 | else |
0a1b45a2 | 10531 | return true; |
abb3f6cc | 10532 | |
4ef9f41a AA |
10533 | case NT_S390_VXRS_LOW: |
10534 | if (note->namesz == 6 | |
10535 | && strcmp (note->namedata, "LINUX") == 0) | |
10536 | return elfcore_grok_s390_vxrs_low (abfd, note); | |
10537 | else | |
0a1b45a2 | 10538 | return true; |
4ef9f41a AA |
10539 | |
10540 | case NT_S390_VXRS_HIGH: | |
10541 | if (note->namesz == 6 | |
10542 | && strcmp (note->namedata, "LINUX") == 0) | |
10543 | return elfcore_grok_s390_vxrs_high (abfd, note); | |
10544 | else | |
0a1b45a2 | 10545 | return true; |
4ef9f41a | 10546 | |
88ab90e8 AA |
10547 | case NT_S390_GS_CB: |
10548 | if (note->namesz == 6 | |
10549 | && strcmp (note->namedata, "LINUX") == 0) | |
8fe09d74 | 10550 | return elfcore_grok_s390_gs_cb (abfd, note); |
88ab90e8 | 10551 | else |
0a1b45a2 | 10552 | return true; |
88ab90e8 AA |
10553 | |
10554 | case NT_S390_GS_BC: | |
10555 | if (note->namesz == 6 | |
10556 | && strcmp (note->namedata, "LINUX") == 0) | |
8fe09d74 | 10557 | return elfcore_grok_s390_gs_bc (abfd, note); |
88ab90e8 | 10558 | else |
0a1b45a2 | 10559 | return true; |
88ab90e8 | 10560 | |
27456742 AK |
10561 | case NT_ARC_V2: |
10562 | if (note->namesz == 6 | |
10563 | && strcmp (note->namedata, "LINUX") == 0) | |
10564 | return elfcore_grok_arc_v2 (abfd, note); | |
10565 | else | |
0a1b45a2 | 10566 | return true; |
27456742 | 10567 | |
faa9a424 UW |
10568 | case NT_ARM_VFP: |
10569 | if (note->namesz == 6 | |
10570 | && strcmp (note->namedata, "LINUX") == 0) | |
10571 | return elfcore_grok_arm_vfp (abfd, note); | |
10572 | else | |
0a1b45a2 | 10573 | return true; |
faa9a424 | 10574 | |
652451f8 YZ |
10575 | case NT_ARM_TLS: |
10576 | if (note->namesz == 6 | |
10577 | && strcmp (note->namedata, "LINUX") == 0) | |
10578 | return elfcore_grok_aarch_tls (abfd, note); | |
10579 | else | |
0a1b45a2 | 10580 | return true; |
652451f8 YZ |
10581 | |
10582 | case NT_ARM_HW_BREAK: | |
10583 | if (note->namesz == 6 | |
10584 | && strcmp (note->namedata, "LINUX") == 0) | |
10585 | return elfcore_grok_aarch_hw_break (abfd, note); | |
10586 | else | |
0a1b45a2 | 10587 | return true; |
652451f8 YZ |
10588 | |
10589 | case NT_ARM_HW_WATCH: | |
10590 | if (note->namesz == 6 | |
10591 | && strcmp (note->namedata, "LINUX") == 0) | |
10592 | return elfcore_grok_aarch_hw_watch (abfd, note); | |
10593 | else | |
0a1b45a2 | 10594 | return true; |
652451f8 | 10595 | |
ad1cc4e4 AH |
10596 | case NT_ARM_SVE: |
10597 | if (note->namesz == 6 | |
10598 | && strcmp (note->namedata, "LINUX") == 0) | |
10599 | return elfcore_grok_aarch_sve (abfd, note); | |
10600 | else | |
0a1b45a2 | 10601 | return true; |
ad1cc4e4 | 10602 | |
e6c3b5bf AH |
10603 | case NT_ARM_PAC_MASK: |
10604 | if (note->namesz == 6 | |
10605 | && strcmp (note->namedata, "LINUX") == 0) | |
10606 | return elfcore_grok_aarch_pauth (abfd, note); | |
10607 | else | |
0a1b45a2 | 10608 | return true; |
e6c3b5bf | 10609 | |
b63a5e38 AB |
10610 | case NT_GDB_TDESC: |
10611 | if (note->namesz == 4 | |
10612 | && strcmp (note->namedata, "GDB") == 0) | |
10613 | return elfcore_grok_gdb_tdesc (abfd, note); | |
10614 | else | |
0a1b45a2 | 10615 | return true; |
b63a5e38 | 10616 | |
db6092f3 AB |
10617 | case NT_RISCV_CSR: |
10618 | if (note->namesz == 4 | |
10619 | && strcmp (note->namedata, "GDB") == 0) | |
10620 | return elfcore_grok_riscv_csr (abfd, note); | |
10621 | else | |
0a1b45a2 | 10622 | return true; |
db6092f3 | 10623 | |
252b5132 RH |
10624 | case NT_PRPSINFO: |
10625 | case NT_PSINFO: | |
bb0082d6 AM |
10626 | if (bed->elf_backend_grok_psinfo) |
10627 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
0a1b45a2 | 10628 | return true; |
bb0082d6 | 10629 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 10630 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 10631 | #else |
0a1b45a2 | 10632 | return true; |
252b5132 | 10633 | #endif |
3333a7c3 RM |
10634 | |
10635 | case NT_AUXV: | |
58e07198 | 10636 | return elfcore_make_auxv_note_section (abfd, note, 0); |
9015683b | 10637 | |
451b7c33 TT |
10638 | case NT_FILE: |
10639 | return elfcore_make_note_pseudosection (abfd, ".note.linuxcore.file", | |
10640 | note); | |
10641 | ||
9015683b TT |
10642 | case NT_SIGINFO: |
10643 | return elfcore_make_note_pseudosection (abfd, ".note.linuxcore.siginfo", | |
10644 | note); | |
5b2c414d | 10645 | |
252b5132 RH |
10646 | } |
10647 | } | |
10648 | ||
0a1b45a2 | 10649 | static bool |
718175fa JK |
10650 | elfobj_grok_gnu_build_id (bfd *abfd, Elf_Internal_Note *note) |
10651 | { | |
c74f7d1c | 10652 | struct bfd_build_id* build_id; |
30e8ee25 AM |
10653 | |
10654 | if (note->descsz == 0) | |
0a1b45a2 | 10655 | return false; |
30e8ee25 | 10656 | |
c74f7d1c JT |
10657 | build_id = bfd_alloc (abfd, sizeof (struct bfd_build_id) - 1 + note->descsz); |
10658 | if (build_id == NULL) | |
0a1b45a2 | 10659 | return false; |
718175fa | 10660 | |
c74f7d1c JT |
10661 | build_id->size = note->descsz; |
10662 | memcpy (build_id->data, note->descdata, note->descsz); | |
10663 | abfd->build_id = build_id; | |
718175fa | 10664 | |
0a1b45a2 | 10665 | return true; |
718175fa JK |
10666 | } |
10667 | ||
0a1b45a2 | 10668 | static bool |
718175fa JK |
10669 | elfobj_grok_gnu_note (bfd *abfd, Elf_Internal_Note *note) |
10670 | { | |
10671 | switch (note->type) | |
10672 | { | |
10673 | default: | |
0a1b45a2 | 10674 | return true; |
718175fa | 10675 | |
46bed679 L |
10676 | case NT_GNU_PROPERTY_TYPE_0: |
10677 | return _bfd_elf_parse_gnu_properties (abfd, note); | |
10678 | ||
718175fa JK |
10679 | case NT_GNU_BUILD_ID: |
10680 | return elfobj_grok_gnu_build_id (abfd, note); | |
10681 | } | |
10682 | } | |
10683 | ||
0a1b45a2 | 10684 | static bool |
e21e5835 NC |
10685 | elfobj_grok_stapsdt_note_1 (bfd *abfd, Elf_Internal_Note *note) |
10686 | { | |
10687 | struct sdt_note *cur = | |
7a6e0d89 AM |
10688 | (struct sdt_note *) bfd_alloc (abfd, |
10689 | sizeof (struct sdt_note) + note->descsz); | |
e21e5835 NC |
10690 | |
10691 | cur->next = (struct sdt_note *) (elf_tdata (abfd))->sdt_note_head; | |
10692 | cur->size = (bfd_size_type) note->descsz; | |
10693 | memcpy (cur->data, note->descdata, note->descsz); | |
10694 | ||
10695 | elf_tdata (abfd)->sdt_note_head = cur; | |
10696 | ||
0a1b45a2 | 10697 | return true; |
e21e5835 NC |
10698 | } |
10699 | ||
0a1b45a2 | 10700 | static bool |
e21e5835 NC |
10701 | elfobj_grok_stapsdt_note (bfd *abfd, Elf_Internal_Note *note) |
10702 | { | |
10703 | switch (note->type) | |
10704 | { | |
10705 | case NT_STAPSDT: | |
10706 | return elfobj_grok_stapsdt_note_1 (abfd, note); | |
10707 | ||
10708 | default: | |
0a1b45a2 | 10709 | return true; |
e21e5835 NC |
10710 | } |
10711 | } | |
10712 | ||
0a1b45a2 | 10713 | static bool |
aa1ed4a9 JB |
10714 | elfcore_grok_freebsd_psinfo (bfd *abfd, Elf_Internal_Note *note) |
10715 | { | |
10716 | size_t offset; | |
10717 | ||
b5430a3c | 10718 | switch (elf_elfheader (abfd)->e_ident[EI_CLASS]) |
aa1ed4a9 | 10719 | { |
b5430a3c | 10720 | case ELFCLASS32: |
0064d223 | 10721 | if (note->descsz < 108) |
0a1b45a2 | 10722 | return false; |
aa1ed4a9 JB |
10723 | break; |
10724 | ||
b5430a3c | 10725 | case ELFCLASS64: |
0064d223 | 10726 | if (note->descsz < 120) |
0a1b45a2 | 10727 | return false; |
aa1ed4a9 JB |
10728 | break; |
10729 | ||
10730 | default: | |
0a1b45a2 | 10731 | return false; |
aa1ed4a9 JB |
10732 | } |
10733 | ||
0064d223 JB |
10734 | /* Check for version 1 in pr_version. */ |
10735 | if (bfd_h_get_32 (abfd, (bfd_byte *) note->descdata) != 1) | |
0a1b45a2 | 10736 | return false; |
80a04378 | 10737 | |
0064d223 JB |
10738 | offset = 4; |
10739 | ||
10740 | /* Skip over pr_psinfosz. */ | |
b5430a3c | 10741 | if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS32) |
0064d223 JB |
10742 | offset += 4; |
10743 | else | |
10744 | { | |
10745 | offset += 4; /* Padding before pr_psinfosz. */ | |
10746 | offset += 8; | |
10747 | } | |
10748 | ||
aa1ed4a9 JB |
10749 | /* pr_fname is PRFNAMESZ (16) + 1 bytes in size. */ |
10750 | elf_tdata (abfd)->core->program | |
10751 | = _bfd_elfcore_strndup (abfd, note->descdata + offset, 17); | |
10752 | offset += 17; | |
10753 | ||
10754 | /* pr_psargs is PRARGSZ (80) + 1 bytes in size. */ | |
10755 | elf_tdata (abfd)->core->command | |
10756 | = _bfd_elfcore_strndup (abfd, note->descdata + offset, 81); | |
0064d223 JB |
10757 | offset += 81; |
10758 | ||
10759 | /* Padding before pr_pid. */ | |
10760 | offset += 2; | |
10761 | ||
10762 | /* The pr_pid field was added in version "1a". */ | |
10763 | if (note->descsz < offset + 4) | |
0a1b45a2 | 10764 | return true; |
0064d223 JB |
10765 | |
10766 | elf_tdata (abfd)->core->pid | |
10767 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + offset); | |
aa1ed4a9 | 10768 | |
0a1b45a2 | 10769 | return true; |
aa1ed4a9 JB |
10770 | } |
10771 | ||
0a1b45a2 | 10772 | static bool |
aa1ed4a9 JB |
10773 | elfcore_grok_freebsd_prstatus (bfd *abfd, Elf_Internal_Note *note) |
10774 | { | |
10775 | size_t offset; | |
10776 | size_t size; | |
24d3e51b | 10777 | size_t min_size; |
aa1ed4a9 | 10778 | |
24d3e51b NC |
10779 | /* Compute offset of pr_getregsz, skipping over pr_statussz. |
10780 | Also compute minimum size of this note. */ | |
b5430a3c | 10781 | switch (elf_elfheader (abfd)->e_ident[EI_CLASS]) |
aa1ed4a9 | 10782 | { |
b5430a3c | 10783 | case ELFCLASS32: |
24d3e51b NC |
10784 | offset = 4 + 4; |
10785 | min_size = offset + (4 * 2) + 4 + 4 + 4; | |
aa1ed4a9 JB |
10786 | break; |
10787 | ||
b5430a3c | 10788 | case ELFCLASS64: |
24d3e51b NC |
10789 | offset = 4 + 4 + 8; /* Includes padding before pr_statussz. */ |
10790 | min_size = offset + (8 * 2) + 4 + 4 + 4 + 4; | |
aa1ed4a9 JB |
10791 | break; |
10792 | ||
10793 | default: | |
0a1b45a2 | 10794 | return false; |
aa1ed4a9 JB |
10795 | } |
10796 | ||
24d3e51b | 10797 | if (note->descsz < min_size) |
0a1b45a2 | 10798 | return false; |
24d3e51b NC |
10799 | |
10800 | /* Check for version 1 in pr_version. */ | |
10801 | if (bfd_h_get_32 (abfd, (bfd_byte *) note->descdata) != 1) | |
0a1b45a2 | 10802 | return false; |
aa1ed4a9 | 10803 | |
24d3e51b NC |
10804 | /* Extract size of pr_reg from pr_gregsetsz. */ |
10805 | /* Skip over pr_gregsetsz and pr_fpregsetsz. */ | |
b5430a3c | 10806 | if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS32) |
24d3e51b NC |
10807 | { |
10808 | size = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + offset); | |
10809 | offset += 4 * 2; | |
10810 | } | |
b5430a3c | 10811 | else |
24d3e51b NC |
10812 | { |
10813 | size = bfd_h_get_64 (abfd, (bfd_byte *) note->descdata + offset); | |
10814 | offset += 8 * 2; | |
10815 | } | |
aa1ed4a9 | 10816 | |
24d3e51b | 10817 | /* Skip over pr_osreldate. */ |
aa1ed4a9 JB |
10818 | offset += 4; |
10819 | ||
24d3e51b | 10820 | /* Read signal from pr_cursig. */ |
aa1ed4a9 JB |
10821 | if (elf_tdata (abfd)->core->signal == 0) |
10822 | elf_tdata (abfd)->core->signal | |
10823 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + offset); | |
10824 | offset += 4; | |
10825 | ||
24d3e51b | 10826 | /* Read TID from pr_pid. */ |
aa1ed4a9 JB |
10827 | elf_tdata (abfd)->core->lwpid |
10828 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + offset); | |
10829 | offset += 4; | |
10830 | ||
24d3e51b | 10831 | /* Padding before pr_reg. */ |
b5430a3c | 10832 | if (elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) |
aa1ed4a9 JB |
10833 | offset += 4; |
10834 | ||
24d3e51b NC |
10835 | /* Make sure that there is enough data remaining in the note. */ |
10836 | if ((note->descsz - offset) < size) | |
0a1b45a2 | 10837 | return false; |
24d3e51b | 10838 | |
aa1ed4a9 JB |
10839 | /* Make a ".reg/999" section and a ".reg" section. */ |
10840 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
10841 | size, note->descpos + offset); | |
10842 | } | |
10843 | ||
0a1b45a2 | 10844 | static bool |
aa1ed4a9 JB |
10845 | elfcore_grok_freebsd_note (bfd *abfd, Elf_Internal_Note *note) |
10846 | { | |
544c67cd JB |
10847 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
10848 | ||
aa1ed4a9 JB |
10849 | switch (note->type) |
10850 | { | |
10851 | case NT_PRSTATUS: | |
544c67cd JB |
10852 | if (bed->elf_backend_grok_freebsd_prstatus) |
10853 | if ((*bed->elf_backend_grok_freebsd_prstatus) (abfd, note)) | |
0a1b45a2 | 10854 | return true; |
aa1ed4a9 JB |
10855 | return elfcore_grok_freebsd_prstatus (abfd, note); |
10856 | ||
10857 | case NT_FPREGSET: | |
10858 | return elfcore_grok_prfpreg (abfd, note); | |
10859 | ||
10860 | case NT_PRPSINFO: | |
10861 | return elfcore_grok_freebsd_psinfo (abfd, note); | |
10862 | ||
10863 | case NT_FREEBSD_THRMISC: | |
10864 | if (note->namesz == 8) | |
10865 | return elfcore_make_note_pseudosection (abfd, ".thrmisc", note); | |
10866 | else | |
0a1b45a2 | 10867 | return true; |
aa1ed4a9 | 10868 | |
ddb2bbcf JB |
10869 | case NT_FREEBSD_PROCSTAT_PROC: |
10870 | return elfcore_make_note_pseudosection (abfd, ".note.freebsdcore.proc", | |
10871 | note); | |
10872 | ||
10873 | case NT_FREEBSD_PROCSTAT_FILES: | |
10874 | return elfcore_make_note_pseudosection (abfd, ".note.freebsdcore.files", | |
10875 | note); | |
10876 | ||
10877 | case NT_FREEBSD_PROCSTAT_VMMAP: | |
10878 | return elfcore_make_note_pseudosection (abfd, ".note.freebsdcore.vmmap", | |
10879 | note); | |
10880 | ||
3350c5f5 | 10881 | case NT_FREEBSD_PROCSTAT_AUXV: |
58e07198 | 10882 | return elfcore_make_auxv_note_section (abfd, note, 4); |
3350c5f5 | 10883 | |
aa1ed4a9 JB |
10884 | case NT_X86_XSTATE: |
10885 | if (note->namesz == 8) | |
10886 | return elfcore_grok_xstatereg (abfd, note); | |
10887 | else | |
0a1b45a2 | 10888 | return true; |
aa1ed4a9 | 10889 | |
e6f3b9c3 JB |
10890 | case NT_FREEBSD_PTLWPINFO: |
10891 | return elfcore_make_note_pseudosection (abfd, ".note.freebsdcore.lwpinfo", | |
10892 | note); | |
10893 | ||
6d5be5d6 JB |
10894 | case NT_ARM_VFP: |
10895 | return elfcore_grok_arm_vfp (abfd, note); | |
10896 | ||
aa1ed4a9 | 10897 | default: |
0a1b45a2 | 10898 | return true; |
aa1ed4a9 JB |
10899 | } |
10900 | } | |
10901 | ||
0a1b45a2 | 10902 | static bool |
217aa764 | 10903 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
10904 | { |
10905 | char *cp; | |
10906 | ||
10907 | cp = strchr (note->namedata, '@'); | |
10908 | if (cp != NULL) | |
10909 | { | |
d2b64500 | 10910 | *lwpidp = atoi(cp + 1); |
0a1b45a2 | 10911 | return true; |
50b2bdb7 | 10912 | } |
0a1b45a2 | 10913 | return false; |
50b2bdb7 AM |
10914 | } |
10915 | ||
0a1b45a2 | 10916 | static bool |
217aa764 | 10917 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 | 10918 | { |
80a04378 | 10919 | if (note->descsz <= 0x7c + 31) |
0a1b45a2 | 10920 | return false; |
80a04378 | 10921 | |
50b2bdb7 | 10922 | /* Signal number at offset 0x08. */ |
228e534f | 10923 | elf_tdata (abfd)->core->signal |
50b2bdb7 AM |
10924 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); |
10925 | ||
10926 | /* Process ID at offset 0x50. */ | |
228e534f | 10927 | elf_tdata (abfd)->core->pid |
50b2bdb7 AM |
10928 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); |
10929 | ||
10930 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
228e534f | 10931 | elf_tdata (abfd)->core->command |
50b2bdb7 AM |
10932 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); |
10933 | ||
7720ba9f MK |
10934 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
10935 | note); | |
50b2bdb7 AM |
10936 | } |
10937 | ||
0a1b45a2 | 10938 | static bool |
217aa764 | 10939 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
10940 | { |
10941 | int lwp; | |
10942 | ||
10943 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
228e534f | 10944 | elf_tdata (abfd)->core->lwpid = lwp; |
50b2bdb7 | 10945 | |
58e07198 | 10946 | switch (note->type) |
50b2bdb7 | 10947 | { |
58e07198 | 10948 | case NT_NETBSDCORE_PROCINFO: |
50b2bdb7 | 10949 | /* NetBSD-specific core "procinfo". Note that we expect to |
08a40648 AM |
10950 | find this note before any of the others, which is fine, |
10951 | since the kernel writes this note out first when it | |
10952 | creates a core file. */ | |
50b2bdb7 | 10953 | return elfcore_grok_netbsd_procinfo (abfd, note); |
58e07198 CZ |
10954 | case NT_NETBSDCORE_AUXV: |
10955 | /* NetBSD-specific Elf Auxiliary Vector data. */ | |
10956 | return elfcore_make_auxv_note_section (abfd, note, 4); | |
06d949ec KR |
10957 | case NT_NETBSDCORE_LWPSTATUS: |
10958 | return elfcore_make_note_pseudosection (abfd, | |
10959 | ".note.netbsdcore.lwpstatus", | |
10960 | note); | |
58e07198 CZ |
10961 | default: |
10962 | break; | |
50b2bdb7 AM |
10963 | } |
10964 | ||
06d949ec | 10965 | /* As of March 2020 there are no other machine-independent notes |
b4db1224 JT |
10966 | defined for NetBSD core files. If the note type is less |
10967 | than the start of the machine-dependent note types, we don't | |
10968 | understand it. */ | |
47d9a591 | 10969 | |
b4db1224 | 10970 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
0a1b45a2 | 10971 | return true; |
50b2bdb7 AM |
10972 | |
10973 | ||
10974 | switch (bfd_get_arch (abfd)) | |
10975 | { | |
08a40648 AM |
10976 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and |
10977 | PT_GETFPREGS == mach+2. */ | |
50b2bdb7 | 10978 | |
015ec493 | 10979 | case bfd_arch_aarch64: |
50b2bdb7 AM |
10980 | case bfd_arch_alpha: |
10981 | case bfd_arch_sparc: | |
10982 | switch (note->type) | |
08a40648 AM |
10983 | { |
10984 | case NT_NETBSDCORE_FIRSTMACH+0: | |
10985 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 10986 | |
08a40648 AM |
10987 | case NT_NETBSDCORE_FIRSTMACH+2: |
10988 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 10989 | |
08a40648 | 10990 | default: |
0a1b45a2 | 10991 | return true; |
08a40648 | 10992 | } |
50b2bdb7 | 10993 | |
58e07198 CZ |
10994 | /* On SuperH, PT_GETREGS == mach+3 and PT_GETFPREGS == mach+5. |
10995 | There's also old PT___GETREGS40 == mach + 1 for old reg | |
10996 | structure which lacks GBR. */ | |
10997 | ||
10998 | case bfd_arch_sh: | |
10999 | switch (note->type) | |
11000 | { | |
11001 | case NT_NETBSDCORE_FIRSTMACH+3: | |
11002 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
11003 | ||
11004 | case NT_NETBSDCORE_FIRSTMACH+5: | |
11005 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
11006 | ||
11007 | default: | |
0a1b45a2 | 11008 | return true; |
58e07198 CZ |
11009 | } |
11010 | ||
08a40648 AM |
11011 | /* On all other arch's, PT_GETREGS == mach+1 and |
11012 | PT_GETFPREGS == mach+3. */ | |
50b2bdb7 AM |
11013 | |
11014 | default: | |
11015 | switch (note->type) | |
08a40648 AM |
11016 | { |
11017 | case NT_NETBSDCORE_FIRSTMACH+1: | |
11018 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 11019 | |
08a40648 AM |
11020 | case NT_NETBSDCORE_FIRSTMACH+3: |
11021 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 11022 | |
08a40648 | 11023 | default: |
0a1b45a2 | 11024 | return true; |
08a40648 | 11025 | } |
50b2bdb7 AM |
11026 | } |
11027 | /* NOTREACHED */ | |
11028 | } | |
11029 | ||
0a1b45a2 | 11030 | static bool |
67cc5033 MK |
11031 | elfcore_grok_openbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
11032 | { | |
80a04378 | 11033 | if (note->descsz <= 0x48 + 31) |
0a1b45a2 | 11034 | return false; |
80a04378 | 11035 | |
67cc5033 | 11036 | /* Signal number at offset 0x08. */ |
228e534f | 11037 | elf_tdata (abfd)->core->signal |
67cc5033 MK |
11038 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); |
11039 | ||
11040 | /* Process ID at offset 0x20. */ | |
228e534f | 11041 | elf_tdata (abfd)->core->pid |
67cc5033 MK |
11042 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x20); |
11043 | ||
11044 | /* Command name at 0x48 (max 32 bytes, including nul). */ | |
228e534f | 11045 | elf_tdata (abfd)->core->command |
67cc5033 MK |
11046 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x48, 31); |
11047 | ||
0a1b45a2 | 11048 | return true; |
67cc5033 MK |
11049 | } |
11050 | ||
0a1b45a2 | 11051 | static bool |
67cc5033 MK |
11052 | elfcore_grok_openbsd_note (bfd *abfd, Elf_Internal_Note *note) |
11053 | { | |
11054 | if (note->type == NT_OPENBSD_PROCINFO) | |
11055 | return elfcore_grok_openbsd_procinfo (abfd, note); | |
11056 | ||
11057 | if (note->type == NT_OPENBSD_REGS) | |
11058 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
11059 | ||
11060 | if (note->type == NT_OPENBSD_FPREGS) | |
11061 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
11062 | ||
11063 | if (note->type == NT_OPENBSD_XFPREGS) | |
11064 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
11065 | ||
11066 | if (note->type == NT_OPENBSD_AUXV) | |
58e07198 | 11067 | return elfcore_make_auxv_note_section (abfd, note, 0); |
67cc5033 MK |
11068 | |
11069 | if (note->type == NT_OPENBSD_WCOOKIE) | |
11070 | { | |
11071 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".wcookie", | |
11072 | SEC_HAS_CONTENTS); | |
11073 | ||
11074 | if (sect == NULL) | |
0a1b45a2 | 11075 | return false; |
67cc5033 MK |
11076 | sect->size = note->descsz; |
11077 | sect->filepos = note->descpos; | |
11078 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
11079 | ||
0a1b45a2 | 11080 | return true; |
67cc5033 MK |
11081 | } |
11082 | ||
0a1b45a2 | 11083 | return true; |
67cc5033 MK |
11084 | } |
11085 | ||
0a1b45a2 | 11086 | static bool |
d3fd4074 | 11087 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid) |
07c6e936 NC |
11088 | { |
11089 | void *ddata = note->descdata; | |
11090 | char buf[100]; | |
11091 | char *name; | |
11092 | asection *sect; | |
f8843e87 AM |
11093 | short sig; |
11094 | unsigned flags; | |
07c6e936 | 11095 | |
80a04378 | 11096 | if (note->descsz < 16) |
0a1b45a2 | 11097 | return false; |
80a04378 | 11098 | |
07c6e936 | 11099 | /* nto_procfs_status 'pid' field is at offset 0. */ |
228e534f | 11100 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, (bfd_byte *) ddata); |
07c6e936 | 11101 | |
f8843e87 AM |
11102 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
11103 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
11104 | ||
11105 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
11106 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
11107 | |
11108 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
11109 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
11110 | { | |
228e534f AM |
11111 | elf_tdata (abfd)->core->signal = sig; |
11112 | elf_tdata (abfd)->core->lwpid = *tid; | |
f8843e87 | 11113 | } |
07c6e936 | 11114 | |
f8843e87 AM |
11115 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
11116 | do not come from signals so we make sure we set the current | |
11117 | thread just in case. */ | |
11118 | if (flags & 0x00000080) | |
228e534f | 11119 | elf_tdata (abfd)->core->lwpid = *tid; |
07c6e936 NC |
11120 | |
11121 | /* Make a ".qnx_core_status/%d" section. */ | |
d3fd4074 | 11122 | sprintf (buf, ".qnx_core_status/%ld", *tid); |
07c6e936 | 11123 | |
a50b1753 | 11124 | name = (char *) bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 | 11125 | if (name == NULL) |
0a1b45a2 | 11126 | return false; |
07c6e936 NC |
11127 | strcpy (name, buf); |
11128 | ||
117ed4f8 | 11129 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 | 11130 | if (sect == NULL) |
0a1b45a2 | 11131 | return false; |
07c6e936 | 11132 | |
07d6d2b8 AM |
11133 | sect->size = note->descsz; |
11134 | sect->filepos = note->descpos; | |
07c6e936 NC |
11135 | sect->alignment_power = 2; |
11136 | ||
11137 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
11138 | } | |
11139 | ||
0a1b45a2 | 11140 | static bool |
d69f560c KW |
11141 | elfcore_grok_nto_regs (bfd *abfd, |
11142 | Elf_Internal_Note *note, | |
d3fd4074 | 11143 | long tid, |
d69f560c | 11144 | char *base) |
07c6e936 NC |
11145 | { |
11146 | char buf[100]; | |
11147 | char *name; | |
11148 | asection *sect; | |
11149 | ||
d69f560c | 11150 | /* Make a "(base)/%d" section. */ |
d3fd4074 | 11151 | sprintf (buf, "%s/%ld", base, tid); |
07c6e936 | 11152 | |
a50b1753 | 11153 | name = (char *) bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 | 11154 | if (name == NULL) |
0a1b45a2 | 11155 | return false; |
07c6e936 NC |
11156 | strcpy (name, buf); |
11157 | ||
117ed4f8 | 11158 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 | 11159 | if (sect == NULL) |
0a1b45a2 | 11160 | return false; |
07c6e936 | 11161 | |
07d6d2b8 AM |
11162 | sect->size = note->descsz; |
11163 | sect->filepos = note->descpos; | |
07c6e936 NC |
11164 | sect->alignment_power = 2; |
11165 | ||
f8843e87 | 11166 | /* This is the current thread. */ |
228e534f | 11167 | if (elf_tdata (abfd)->core->lwpid == tid) |
d69f560c | 11168 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 | 11169 | |
0a1b45a2 | 11170 | return true; |
07c6e936 NC |
11171 | } |
11172 | ||
11173 | #define BFD_QNT_CORE_INFO 7 | |
11174 | #define BFD_QNT_CORE_STATUS 8 | |
11175 | #define BFD_QNT_CORE_GREG 9 | |
11176 | #define BFD_QNT_CORE_FPREG 10 | |
11177 | ||
0a1b45a2 | 11178 | static bool |
217aa764 | 11179 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
11180 | { |
11181 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 11182 | tid from the previous call to pass down to the next gregs |
07c6e936 | 11183 | function. */ |
d3fd4074 | 11184 | static long tid = 1; |
07c6e936 NC |
11185 | |
11186 | switch (note->type) | |
11187 | { | |
d69f560c KW |
11188 | case BFD_QNT_CORE_INFO: |
11189 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
11190 | case BFD_QNT_CORE_STATUS: | |
11191 | return elfcore_grok_nto_status (abfd, note, &tid); | |
11192 | case BFD_QNT_CORE_GREG: | |
11193 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
11194 | case BFD_QNT_CORE_FPREG: | |
11195 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
11196 | default: | |
0a1b45a2 | 11197 | return true; |
07c6e936 NC |
11198 | } |
11199 | } | |
11200 | ||
0a1b45a2 | 11201 | static bool |
b15fa79e AM |
11202 | elfcore_grok_spu_note (bfd *abfd, Elf_Internal_Note *note) |
11203 | { | |
11204 | char *name; | |
11205 | asection *sect; | |
11206 | size_t len; | |
11207 | ||
11208 | /* Use note name as section name. */ | |
11209 | len = note->namesz; | |
a50b1753 | 11210 | name = (char *) bfd_alloc (abfd, len); |
b15fa79e | 11211 | if (name == NULL) |
0a1b45a2 | 11212 | return false; |
b15fa79e AM |
11213 | memcpy (name, note->namedata, len); |
11214 | name[len - 1] = '\0'; | |
11215 | ||
11216 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); | |
11217 | if (sect == NULL) | |
0a1b45a2 | 11218 | return false; |
b15fa79e | 11219 | |
07d6d2b8 AM |
11220 | sect->size = note->descsz; |
11221 | sect->filepos = note->descpos; | |
b15fa79e AM |
11222 | sect->alignment_power = 1; |
11223 | ||
0a1b45a2 | 11224 | return true; |
b15fa79e AM |
11225 | } |
11226 | ||
7c76fa91 MS |
11227 | /* Function: elfcore_write_note |
11228 | ||
47d9a591 | 11229 | Inputs: |
a39f3346 | 11230 | buffer to hold note, and current size of buffer |
7c76fa91 MS |
11231 | name of note |
11232 | type of note | |
11233 | data for note | |
11234 | size of data for note | |
11235 | ||
a39f3346 AM |
11236 | Writes note to end of buffer. ELF64 notes are written exactly as |
11237 | for ELF32, despite the current (as of 2006) ELF gabi specifying | |
11238 | that they ought to have 8-byte namesz and descsz field, and have | |
11239 | 8-byte alignment. Other writers, eg. Linux kernel, do the same. | |
11240 | ||
7c76fa91 | 11241 | Return: |
a39f3346 | 11242 | Pointer to realloc'd buffer, *BUFSIZ updated. */ |
7c76fa91 MS |
11243 | |
11244 | char * | |
a39f3346 | 11245 | elfcore_write_note (bfd *abfd, |
217aa764 | 11246 | char *buf, |
a39f3346 | 11247 | int *bufsiz, |
217aa764 | 11248 | const char *name, |
a39f3346 | 11249 | int type, |
217aa764 | 11250 | const void *input, |
a39f3346 | 11251 | int size) |
7c76fa91 MS |
11252 | { |
11253 | Elf_External_Note *xnp; | |
d4c88bbb | 11254 | size_t namesz; |
d4c88bbb | 11255 | size_t newspace; |
a39f3346 | 11256 | char *dest; |
7c76fa91 | 11257 | |
d4c88bbb | 11258 | namesz = 0; |
d4c88bbb | 11259 | if (name != NULL) |
a39f3346 | 11260 | namesz = strlen (name) + 1; |
d4c88bbb | 11261 | |
a39f3346 | 11262 | newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4); |
d4c88bbb | 11263 | |
a50b1753 | 11264 | buf = (char *) realloc (buf, *bufsiz + newspace); |
14b1c01e AM |
11265 | if (buf == NULL) |
11266 | return buf; | |
a39f3346 | 11267 | dest = buf + *bufsiz; |
7c76fa91 MS |
11268 | *bufsiz += newspace; |
11269 | xnp = (Elf_External_Note *) dest; | |
11270 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
11271 | H_PUT_32 (abfd, size, xnp->descsz); | |
11272 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
11273 | dest = xnp->name; |
11274 | if (name != NULL) | |
11275 | { | |
11276 | memcpy (dest, name, namesz); | |
11277 | dest += namesz; | |
a39f3346 | 11278 | while (namesz & 3) |
d4c88bbb AM |
11279 | { |
11280 | *dest++ = '\0'; | |
a39f3346 | 11281 | ++namesz; |
d4c88bbb AM |
11282 | } |
11283 | } | |
11284 | memcpy (dest, input, size); | |
a39f3346 AM |
11285 | dest += size; |
11286 | while (size & 3) | |
11287 | { | |
11288 | *dest++ = '\0'; | |
11289 | ++size; | |
11290 | } | |
11291 | return buf; | |
7c76fa91 MS |
11292 | } |
11293 | ||
602f1657 AM |
11294 | /* gcc-8 warns (*) on all the strncpy calls in this function about |
11295 | possible string truncation. The "truncation" is not a bug. We | |
11296 | have an external representation of structs with fields that are not | |
11297 | necessarily NULL terminated and corresponding internal | |
11298 | representation fields that are one larger so that they can always | |
11299 | be NULL terminated. | |
11300 | gcc versions between 4.2 and 4.6 do not allow pragma control of | |
11301 | diagnostics inside functions, giving a hard error if you try to use | |
11302 | the finer control available with later versions. | |
11303 | gcc prior to 4.2 warns about diagnostic push and pop. | |
11304 | gcc-5, gcc-6 and gcc-7 warn that -Wstringop-truncation is unknown, | |
11305 | unless you also add #pragma GCC diagnostic ignored "-Wpragma". | |
11306 | (*) Depending on your system header files! */ | |
d99b4b92 | 11307 | #if GCC_VERSION >= 8000 |
602f1657 AM |
11308 | # pragma GCC diagnostic push |
11309 | # pragma GCC diagnostic ignored "-Wstringop-truncation" | |
d99b4b92 | 11310 | #endif |
7c76fa91 | 11311 | char * |
217aa764 AM |
11312 | elfcore_write_prpsinfo (bfd *abfd, |
11313 | char *buf, | |
11314 | int *bufsiz, | |
11315 | const char *fname, | |
11316 | const char *psargs) | |
7c76fa91 | 11317 | { |
183e98be AM |
11318 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
11319 | ||
11320 | if (bed->elf_backend_write_core_note != NULL) | |
11321 | { | |
11322 | char *ret; | |
11323 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
11324 | NT_PRPSINFO, fname, psargs); | |
11325 | if (ret != NULL) | |
11326 | return ret; | |
11327 | } | |
7c76fa91 | 11328 | |
1f20dca5 | 11329 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
602f1657 | 11330 | # if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
183e98be AM |
11331 | if (bed->s->elfclass == ELFCLASS32) |
11332 | { | |
602f1657 | 11333 | # if defined (HAVE_PSINFO32_T) |
183e98be AM |
11334 | psinfo32_t data; |
11335 | int note_type = NT_PSINFO; | |
602f1657 | 11336 | # else |
183e98be AM |
11337 | prpsinfo32_t data; |
11338 | int note_type = NT_PRPSINFO; | |
602f1657 | 11339 | # endif |
183e98be AM |
11340 | |
11341 | memset (&data, 0, sizeof (data)); | |
11342 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
11343 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
11344 | return elfcore_write_note (abfd, buf, bufsiz, | |
1f20dca5 | 11345 | "CORE", note_type, &data, sizeof (data)); |
183e98be AM |
11346 | } |
11347 | else | |
602f1657 | 11348 | # endif |
183e98be | 11349 | { |
602f1657 | 11350 | # if defined (HAVE_PSINFO_T) |
183e98be AM |
11351 | psinfo_t data; |
11352 | int note_type = NT_PSINFO; | |
602f1657 | 11353 | # else |
183e98be AM |
11354 | prpsinfo_t data; |
11355 | int note_type = NT_PRPSINFO; | |
602f1657 | 11356 | # endif |
7c76fa91 | 11357 | |
183e98be AM |
11358 | memset (&data, 0, sizeof (data)); |
11359 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
11360 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
11361 | return elfcore_write_note (abfd, buf, bufsiz, | |
1f20dca5 | 11362 | "CORE", note_type, &data, sizeof (data)); |
183e98be | 11363 | } |
7c76fa91 MS |
11364 | #endif /* PSINFO_T or PRPSINFO_T */ |
11365 | ||
1f20dca5 UW |
11366 | free (buf); |
11367 | return NULL; | |
11368 | } | |
d99b4b92 | 11369 | #if GCC_VERSION >= 8000 |
602f1657 | 11370 | # pragma GCC diagnostic pop |
d99b4b92 | 11371 | #endif |
1f20dca5 | 11372 | |
70a38d42 SDJ |
11373 | char * |
11374 | elfcore_write_linux_prpsinfo32 | |
11375 | (bfd *abfd, char *buf, int *bufsiz, | |
11376 | const struct elf_internal_linux_prpsinfo *prpsinfo) | |
11377 | { | |
a2f63b2e MR |
11378 | if (get_elf_backend_data (abfd)->linux_prpsinfo32_ugid16) |
11379 | { | |
11380 | struct elf_external_linux_prpsinfo32_ugid16 data; | |
11381 | ||
11382 | swap_linux_prpsinfo32_ugid16_out (abfd, prpsinfo, &data); | |
11383 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", NT_PRPSINFO, | |
11384 | &data, sizeof (data)); | |
11385 | } | |
11386 | else | |
11387 | { | |
11388 | struct elf_external_linux_prpsinfo32_ugid32 data; | |
70a38d42 | 11389 | |
a2f63b2e MR |
11390 | swap_linux_prpsinfo32_ugid32_out (abfd, prpsinfo, &data); |
11391 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", NT_PRPSINFO, | |
11392 | &data, sizeof (data)); | |
11393 | } | |
70a38d42 SDJ |
11394 | } |
11395 | ||
11396 | char * | |
11397 | elfcore_write_linux_prpsinfo64 | |
11398 | (bfd *abfd, char *buf, int *bufsiz, | |
11399 | const struct elf_internal_linux_prpsinfo *prpsinfo) | |
11400 | { | |
3c9a7b0d MR |
11401 | if (get_elf_backend_data (abfd)->linux_prpsinfo64_ugid16) |
11402 | { | |
11403 | struct elf_external_linux_prpsinfo64_ugid16 data; | |
11404 | ||
11405 | swap_linux_prpsinfo64_ugid16_out (abfd, prpsinfo, &data); | |
11406 | return elfcore_write_note (abfd, buf, bufsiz, | |
11407 | "CORE", NT_PRPSINFO, &data, sizeof (data)); | |
11408 | } | |
11409 | else | |
11410 | { | |
11411 | struct elf_external_linux_prpsinfo64_ugid32 data; | |
70a38d42 | 11412 | |
3c9a7b0d MR |
11413 | swap_linux_prpsinfo64_ugid32_out (abfd, prpsinfo, &data); |
11414 | return elfcore_write_note (abfd, buf, bufsiz, | |
11415 | "CORE", NT_PRPSINFO, &data, sizeof (data)); | |
11416 | } | |
70a38d42 SDJ |
11417 | } |
11418 | ||
7c76fa91 | 11419 | char * |
217aa764 AM |
11420 | elfcore_write_prstatus (bfd *abfd, |
11421 | char *buf, | |
11422 | int *bufsiz, | |
11423 | long pid, | |
11424 | int cursig, | |
11425 | const void *gregs) | |
7c76fa91 | 11426 | { |
183e98be | 11427 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7c76fa91 | 11428 | |
183e98be AM |
11429 | if (bed->elf_backend_write_core_note != NULL) |
11430 | { | |
11431 | char *ret; | |
11432 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
11433 | NT_PRSTATUS, | |
11434 | pid, cursig, gregs); | |
11435 | if (ret != NULL) | |
11436 | return ret; | |
11437 | } | |
11438 | ||
1f20dca5 | 11439 | #if defined (HAVE_PRSTATUS_T) |
183e98be AM |
11440 | #if defined (HAVE_PRSTATUS32_T) |
11441 | if (bed->s->elfclass == ELFCLASS32) | |
11442 | { | |
11443 | prstatus32_t prstat; | |
11444 | ||
11445 | memset (&prstat, 0, sizeof (prstat)); | |
11446 | prstat.pr_pid = pid; | |
11447 | prstat.pr_cursig = cursig; | |
11448 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
1f20dca5 | 11449 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", |
183e98be AM |
11450 | NT_PRSTATUS, &prstat, sizeof (prstat)); |
11451 | } | |
11452 | else | |
11453 | #endif | |
11454 | { | |
11455 | prstatus_t prstat; | |
11456 | ||
11457 | memset (&prstat, 0, sizeof (prstat)); | |
11458 | prstat.pr_pid = pid; | |
11459 | prstat.pr_cursig = cursig; | |
11460 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
1f20dca5 | 11461 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", |
183e98be AM |
11462 | NT_PRSTATUS, &prstat, sizeof (prstat)); |
11463 | } | |
7c76fa91 MS |
11464 | #endif /* HAVE_PRSTATUS_T */ |
11465 | ||
1f20dca5 UW |
11466 | free (buf); |
11467 | return NULL; | |
11468 | } | |
11469 | ||
51316059 MS |
11470 | #if defined (HAVE_LWPSTATUS_T) |
11471 | char * | |
217aa764 AM |
11472 | elfcore_write_lwpstatus (bfd *abfd, |
11473 | char *buf, | |
11474 | int *bufsiz, | |
11475 | long pid, | |
11476 | int cursig, | |
11477 | const void *gregs) | |
51316059 MS |
11478 | { |
11479 | lwpstatus_t lwpstat; | |
183e98be | 11480 | const char *note_name = "CORE"; |
51316059 MS |
11481 | |
11482 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
11483 | lwpstat.pr_lwpid = pid >> 16; | |
11484 | lwpstat.pr_cursig = cursig; | |
11485 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
d1e8523e | 11486 | memcpy (&lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); |
51316059 MS |
11487 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) |
11488 | #if !defined(gregs) | |
11489 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
11490 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
11491 | #else | |
11492 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
11493 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
11494 | #endif | |
11495 | #endif | |
47d9a591 | 11496 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
11497 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
11498 | } | |
11499 | #endif /* HAVE_LWPSTATUS_T */ | |
11500 | ||
7c76fa91 MS |
11501 | #if defined (HAVE_PSTATUS_T) |
11502 | char * | |
217aa764 AM |
11503 | elfcore_write_pstatus (bfd *abfd, |
11504 | char *buf, | |
11505 | int *bufsiz, | |
11506 | long pid, | |
6c10990d NC |
11507 | int cursig ATTRIBUTE_UNUSED, |
11508 | const void *gregs ATTRIBUTE_UNUSED) | |
7c76fa91 | 11509 | { |
183e98be AM |
11510 | const char *note_name = "CORE"; |
11511 | #if defined (HAVE_PSTATUS32_T) | |
11512 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 11513 | |
183e98be AM |
11514 | if (bed->s->elfclass == ELFCLASS32) |
11515 | { | |
11516 | pstatus32_t pstat; | |
11517 | ||
11518 | memset (&pstat, 0, sizeof (pstat)); | |
11519 | pstat.pr_pid = pid & 0xffff; | |
11520 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
11521 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
11522 | return buf; | |
11523 | } | |
11524 | else | |
11525 | #endif | |
11526 | { | |
11527 | pstatus_t pstat; | |
11528 | ||
11529 | memset (&pstat, 0, sizeof (pstat)); | |
11530 | pstat.pr_pid = pid & 0xffff; | |
11531 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
11532 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
11533 | return buf; | |
11534 | } | |
7c76fa91 MS |
11535 | } |
11536 | #endif /* HAVE_PSTATUS_T */ | |
11537 | ||
11538 | char * | |
217aa764 AM |
11539 | elfcore_write_prfpreg (bfd *abfd, |
11540 | char *buf, | |
11541 | int *bufsiz, | |
11542 | const void *fpregs, | |
11543 | int size) | |
7c76fa91 | 11544 | { |
183e98be | 11545 | const char *note_name = "CORE"; |
47d9a591 | 11546 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
11547 | note_name, NT_FPREGSET, fpregs, size); |
11548 | } | |
11549 | ||
11550 | char * | |
217aa764 AM |
11551 | elfcore_write_prxfpreg (bfd *abfd, |
11552 | char *buf, | |
11553 | int *bufsiz, | |
11554 | const void *xfpregs, | |
11555 | int size) | |
7c76fa91 MS |
11556 | { |
11557 | char *note_name = "LINUX"; | |
47d9a591 | 11558 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
11559 | note_name, NT_PRXFPREG, xfpregs, size); |
11560 | } | |
11561 | ||
4339cae0 L |
11562 | char * |
11563 | elfcore_write_xstatereg (bfd *abfd, char *buf, int *bufsiz, | |
11564 | const void *xfpregs, int size) | |
11565 | { | |
97de3545 JB |
11566 | char *note_name; |
11567 | if (get_elf_backend_data (abfd)->elf_osabi == ELFOSABI_FREEBSD) | |
11568 | note_name = "FreeBSD"; | |
11569 | else | |
11570 | note_name = "LINUX"; | |
4339cae0 L |
11571 | return elfcore_write_note (abfd, buf, bufsiz, |
11572 | note_name, NT_X86_XSTATE, xfpregs, size); | |
11573 | } | |
11574 | ||
97753bd5 AM |
11575 | char * |
11576 | elfcore_write_ppc_vmx (bfd *abfd, | |
11577 | char *buf, | |
11578 | int *bufsiz, | |
11579 | const void *ppc_vmx, | |
11580 | int size) | |
11581 | { | |
11582 | char *note_name = "LINUX"; | |
11583 | return elfcore_write_note (abfd, buf, bufsiz, | |
11584 | note_name, NT_PPC_VMX, ppc_vmx, size); | |
11585 | } | |
11586 | ||
89eeb0bc LM |
11587 | char * |
11588 | elfcore_write_ppc_vsx (bfd *abfd, | |
07d6d2b8 AM |
11589 | char *buf, |
11590 | int *bufsiz, | |
11591 | const void *ppc_vsx, | |
11592 | int size) | |
89eeb0bc LM |
11593 | { |
11594 | char *note_name = "LINUX"; | |
11595 | return elfcore_write_note (abfd, buf, bufsiz, | |
07d6d2b8 | 11596 | note_name, NT_PPC_VSX, ppc_vsx, size); |
89eeb0bc LM |
11597 | } |
11598 | ||
cb2366c1 EBM |
11599 | char * |
11600 | elfcore_write_ppc_tar (bfd *abfd, | |
4b24dd1a AM |
11601 | char *buf, |
11602 | int *bufsiz, | |
11603 | const void *ppc_tar, | |
11604 | int size) | |
cb2366c1 EBM |
11605 | { |
11606 | char *note_name = "LINUX"; | |
11607 | return elfcore_write_note (abfd, buf, bufsiz, | |
4b24dd1a | 11608 | note_name, NT_PPC_TAR, ppc_tar, size); |
cb2366c1 EBM |
11609 | } |
11610 | ||
11611 | char * | |
11612 | elfcore_write_ppc_ppr (bfd *abfd, | |
4b24dd1a AM |
11613 | char *buf, |
11614 | int *bufsiz, | |
11615 | const void *ppc_ppr, | |
11616 | int size) | |
cb2366c1 EBM |
11617 | { |
11618 | char *note_name = "LINUX"; | |
11619 | return elfcore_write_note (abfd, buf, bufsiz, | |
4b24dd1a | 11620 | note_name, NT_PPC_PPR, ppc_ppr, size); |
cb2366c1 EBM |
11621 | } |
11622 | ||
11623 | char * | |
11624 | elfcore_write_ppc_dscr (bfd *abfd, | |
4b24dd1a AM |
11625 | char *buf, |
11626 | int *bufsiz, | |
11627 | const void *ppc_dscr, | |
11628 | int size) | |
cb2366c1 EBM |
11629 | { |
11630 | char *note_name = "LINUX"; | |
11631 | return elfcore_write_note (abfd, buf, bufsiz, | |
4b24dd1a | 11632 | note_name, NT_PPC_DSCR, ppc_dscr, size); |
cb2366c1 EBM |
11633 | } |
11634 | ||
11635 | char * | |
11636 | elfcore_write_ppc_ebb (bfd *abfd, | |
4b24dd1a AM |
11637 | char *buf, |
11638 | int *bufsiz, | |
11639 | const void *ppc_ebb, | |
11640 | int size) | |
cb2366c1 EBM |
11641 | { |
11642 | char *note_name = "LINUX"; | |
11643 | return elfcore_write_note (abfd, buf, bufsiz, | |
4b24dd1a | 11644 | note_name, NT_PPC_EBB, ppc_ebb, size); |
cb2366c1 EBM |
11645 | } |
11646 | ||
11647 | char * | |
11648 | elfcore_write_ppc_pmu (bfd *abfd, | |
4b24dd1a AM |
11649 | char *buf, |
11650 | int *bufsiz, | |
11651 | const void *ppc_pmu, | |
11652 | int size) | |
cb2366c1 EBM |
11653 | { |
11654 | char *note_name = "LINUX"; | |
11655 | return elfcore_write_note (abfd, buf, bufsiz, | |
4b24dd1a | 11656 | note_name, NT_PPC_PMU, ppc_pmu, size); |
cb2366c1 EBM |
11657 | } |
11658 | ||
11659 | char * | |
11660 | elfcore_write_ppc_tm_cgpr (bfd *abfd, | |
4b24dd1a AM |
11661 | char *buf, |
11662 | int *bufsiz, | |
11663 | const void *ppc_tm_cgpr, | |
11664 | int size) | |
cb2366c1 EBM |
11665 | { |
11666 | char *note_name = "LINUX"; | |
11667 | return elfcore_write_note (abfd, buf, bufsiz, | |
4b24dd1a | 11668 | note_name, NT_PPC_TM_CGPR, ppc_tm_cgpr, size); |
cb2366c1 EBM |
11669 | } |
11670 | ||
11671 | char * | |
11672 | elfcore_write_ppc_tm_cfpr (bfd *abfd, | |
4b24dd1a AM |
11673 | char *buf, |
11674 | int *bufsiz, | |
11675 | const void *ppc_tm_cfpr, | |
11676 | int size) | |
cb2366c1 EBM |
11677 | { |
11678 | char *note_name = "LINUX"; | |
11679 | return elfcore_write_note (abfd, buf, bufsiz, | |
4b24dd1a | 11680 | note_name, NT_PPC_TM_CFPR, ppc_tm_cfpr, size); |
cb2366c1 EBM |
11681 | } |
11682 | ||
11683 | char * | |
11684 | elfcore_write_ppc_tm_cvmx (bfd *abfd, | |
4b24dd1a AM |
11685 | char *buf, |
11686 | int *bufsiz, | |
11687 | const void *ppc_tm_cvmx, | |
11688 | int size) | |
cb2366c1 EBM |
11689 | { |
11690 | char *note_name = "LINUX"; | |
11691 | return elfcore_write_note (abfd, buf, bufsiz, | |
4b24dd1a | 11692 | note_name, NT_PPC_TM_CVMX, ppc_tm_cvmx, size); |
cb2366c1 EBM |
11693 | } |
11694 | ||
11695 | char * | |
11696 | elfcore_write_ppc_tm_cvsx (bfd *abfd, | |
4b24dd1a AM |
11697 | char *buf, |
11698 | int *bufsiz, | |
11699 | const void *ppc_tm_cvsx, | |
11700 | int size) | |
cb2366c1 EBM |
11701 | { |
11702 | char *note_name = "LINUX"; | |
11703 | return elfcore_write_note (abfd, buf, bufsiz, | |
4b24dd1a | 11704 | note_name, NT_PPC_TM_CVSX, ppc_tm_cvsx, size); |
cb2366c1 EBM |
11705 | } |
11706 | ||
11707 | char * | |
11708 | elfcore_write_ppc_tm_spr (bfd *abfd, | |
4b24dd1a AM |
11709 | char *buf, |
11710 | int *bufsiz, | |
11711 | const void *ppc_tm_spr, | |
11712 | int size) | |
cb2366c1 EBM |
11713 | { |
11714 | char *note_name = "LINUX"; | |
11715 | return elfcore_write_note (abfd, buf, bufsiz, | |
4b24dd1a | 11716 | note_name, NT_PPC_TM_SPR, ppc_tm_spr, size); |
cb2366c1 EBM |
11717 | } |
11718 | ||
11719 | char * | |
11720 | elfcore_write_ppc_tm_ctar (bfd *abfd, | |
4b24dd1a AM |
11721 | char *buf, |
11722 | int *bufsiz, | |
11723 | const void *ppc_tm_ctar, | |
11724 | int size) | |
cb2366c1 EBM |
11725 | { |
11726 | char *note_name = "LINUX"; | |
11727 | return elfcore_write_note (abfd, buf, bufsiz, | |
4b24dd1a | 11728 | note_name, NT_PPC_TM_CTAR, ppc_tm_ctar, size); |
cb2366c1 EBM |
11729 | } |
11730 | ||
11731 | char * | |
11732 | elfcore_write_ppc_tm_cppr (bfd *abfd, | |
4b24dd1a AM |
11733 | char *buf, |
11734 | int *bufsiz, | |
11735 | const void *ppc_tm_cppr, | |
11736 | int size) | |
cb2366c1 EBM |
11737 | { |
11738 | char *note_name = "LINUX"; | |
11739 | return elfcore_write_note (abfd, buf, bufsiz, | |
4b24dd1a | 11740 | note_name, NT_PPC_TM_CPPR, ppc_tm_cppr, size); |
cb2366c1 EBM |
11741 | } |
11742 | ||
11743 | char * | |
11744 | elfcore_write_ppc_tm_cdscr (bfd *abfd, | |
4b24dd1a AM |
11745 | char *buf, |
11746 | int *bufsiz, | |
11747 | const void *ppc_tm_cdscr, | |
11748 | int size) | |
cb2366c1 EBM |
11749 | { |
11750 | char *note_name = "LINUX"; | |
11751 | return elfcore_write_note (abfd, buf, bufsiz, | |
4b24dd1a | 11752 | note_name, NT_PPC_TM_CDSCR, ppc_tm_cdscr, size); |
cb2366c1 EBM |
11753 | } |
11754 | ||
0675e188 UW |
11755 | static char * |
11756 | elfcore_write_s390_high_gprs (bfd *abfd, | |
11757 | char *buf, | |
11758 | int *bufsiz, | |
11759 | const void *s390_high_gprs, | |
11760 | int size) | |
11761 | { | |
11762 | char *note_name = "LINUX"; | |
11763 | return elfcore_write_note (abfd, buf, bufsiz, | |
07d6d2b8 | 11764 | note_name, NT_S390_HIGH_GPRS, |
0675e188 UW |
11765 | s390_high_gprs, size); |
11766 | } | |
11767 | ||
d7eeb400 MS |
11768 | char * |
11769 | elfcore_write_s390_timer (bfd *abfd, | |
07d6d2b8 AM |
11770 | char *buf, |
11771 | int *bufsiz, | |
11772 | const void *s390_timer, | |
11773 | int size) | |
d7eeb400 MS |
11774 | { |
11775 | char *note_name = "LINUX"; | |
11776 | return elfcore_write_note (abfd, buf, bufsiz, | |
07d6d2b8 | 11777 | note_name, NT_S390_TIMER, s390_timer, size); |
d7eeb400 MS |
11778 | } |
11779 | ||
11780 | char * | |
11781 | elfcore_write_s390_todcmp (bfd *abfd, | |
07d6d2b8 AM |
11782 | char *buf, |
11783 | int *bufsiz, | |
11784 | const void *s390_todcmp, | |
11785 | int size) | |
d7eeb400 MS |
11786 | { |
11787 | char *note_name = "LINUX"; | |
11788 | return elfcore_write_note (abfd, buf, bufsiz, | |
07d6d2b8 | 11789 | note_name, NT_S390_TODCMP, s390_todcmp, size); |
d7eeb400 MS |
11790 | } |
11791 | ||
11792 | char * | |
11793 | elfcore_write_s390_todpreg (bfd *abfd, | |
07d6d2b8 AM |
11794 | char *buf, |
11795 | int *bufsiz, | |
11796 | const void *s390_todpreg, | |
11797 | int size) | |
d7eeb400 MS |
11798 | { |
11799 | char *note_name = "LINUX"; | |
11800 | return elfcore_write_note (abfd, buf, bufsiz, | |
07d6d2b8 | 11801 | note_name, NT_S390_TODPREG, s390_todpreg, size); |
d7eeb400 MS |
11802 | } |
11803 | ||
11804 | char * | |
11805 | elfcore_write_s390_ctrs (bfd *abfd, | |
07d6d2b8 AM |
11806 | char *buf, |
11807 | int *bufsiz, | |
11808 | const void *s390_ctrs, | |
11809 | int size) | |
d7eeb400 MS |
11810 | { |
11811 | char *note_name = "LINUX"; | |
11812 | return elfcore_write_note (abfd, buf, bufsiz, | |
07d6d2b8 | 11813 | note_name, NT_S390_CTRS, s390_ctrs, size); |
d7eeb400 MS |
11814 | } |
11815 | ||
11816 | char * | |
11817 | elfcore_write_s390_prefix (bfd *abfd, | |
07d6d2b8 AM |
11818 | char *buf, |
11819 | int *bufsiz, | |
11820 | const void *s390_prefix, | |
11821 | int size) | |
d7eeb400 MS |
11822 | { |
11823 | char *note_name = "LINUX"; | |
11824 | return elfcore_write_note (abfd, buf, bufsiz, | |
07d6d2b8 | 11825 | note_name, NT_S390_PREFIX, s390_prefix, size); |
d7eeb400 MS |
11826 | } |
11827 | ||
355b81d9 UW |
11828 | char * |
11829 | elfcore_write_s390_last_break (bfd *abfd, | |
11830 | char *buf, | |
11831 | int *bufsiz, | |
11832 | const void *s390_last_break, | |
11833 | int size) | |
11834 | { | |
11835 | char *note_name = "LINUX"; | |
11836 | return elfcore_write_note (abfd, buf, bufsiz, | |
07d6d2b8 | 11837 | note_name, NT_S390_LAST_BREAK, |
355b81d9 UW |
11838 | s390_last_break, size); |
11839 | } | |
11840 | ||
11841 | char * | |
11842 | elfcore_write_s390_system_call (bfd *abfd, | |
11843 | char *buf, | |
11844 | int *bufsiz, | |
11845 | const void *s390_system_call, | |
11846 | int size) | |
11847 | { | |
11848 | char *note_name = "LINUX"; | |
11849 | return elfcore_write_note (abfd, buf, bufsiz, | |
07d6d2b8 | 11850 | note_name, NT_S390_SYSTEM_CALL, |
355b81d9 UW |
11851 | s390_system_call, size); |
11852 | } | |
11853 | ||
abb3f6cc NC |
11854 | char * |
11855 | elfcore_write_s390_tdb (bfd *abfd, | |
11856 | char *buf, | |
11857 | int *bufsiz, | |
11858 | const void *s390_tdb, | |
11859 | int size) | |
11860 | { | |
11861 | char *note_name = "LINUX"; | |
11862 | return elfcore_write_note (abfd, buf, bufsiz, | |
07d6d2b8 | 11863 | note_name, NT_S390_TDB, s390_tdb, size); |
abb3f6cc NC |
11864 | } |
11865 | ||
4ef9f41a AA |
11866 | char * |
11867 | elfcore_write_s390_vxrs_low (bfd *abfd, | |
11868 | char *buf, | |
11869 | int *bufsiz, | |
11870 | const void *s390_vxrs_low, | |
11871 | int size) | |
11872 | { | |
11873 | char *note_name = "LINUX"; | |
11874 | return elfcore_write_note (abfd, buf, bufsiz, | |
11875 | note_name, NT_S390_VXRS_LOW, s390_vxrs_low, size); | |
11876 | } | |
11877 | ||
11878 | char * | |
11879 | elfcore_write_s390_vxrs_high (bfd *abfd, | |
11880 | char *buf, | |
11881 | int *bufsiz, | |
11882 | const void *s390_vxrs_high, | |
11883 | int size) | |
11884 | { | |
11885 | char *note_name = "LINUX"; | |
11886 | return elfcore_write_note (abfd, buf, bufsiz, | |
11887 | note_name, NT_S390_VXRS_HIGH, | |
11888 | s390_vxrs_high, size); | |
11889 | } | |
11890 | ||
88ab90e8 AA |
11891 | char * |
11892 | elfcore_write_s390_gs_cb (bfd *abfd, | |
11893 | char *buf, | |
11894 | int *bufsiz, | |
11895 | const void *s390_gs_cb, | |
11896 | int size) | |
11897 | { | |
11898 | char *note_name = "LINUX"; | |
11899 | return elfcore_write_note (abfd, buf, bufsiz, | |
11900 | note_name, NT_S390_GS_CB, | |
11901 | s390_gs_cb, size); | |
11902 | } | |
11903 | ||
11904 | char * | |
11905 | elfcore_write_s390_gs_bc (bfd *abfd, | |
11906 | char *buf, | |
11907 | int *bufsiz, | |
11908 | const void *s390_gs_bc, | |
11909 | int size) | |
11910 | { | |
11911 | char *note_name = "LINUX"; | |
11912 | return elfcore_write_note (abfd, buf, bufsiz, | |
11913 | note_name, NT_S390_GS_BC, | |
11914 | s390_gs_bc, size); | |
11915 | } | |
11916 | ||
faa9a424 UW |
11917 | char * |
11918 | elfcore_write_arm_vfp (bfd *abfd, | |
11919 | char *buf, | |
11920 | int *bufsiz, | |
11921 | const void *arm_vfp, | |
11922 | int size) | |
11923 | { | |
11924 | char *note_name = "LINUX"; | |
11925 | return elfcore_write_note (abfd, buf, bufsiz, | |
11926 | note_name, NT_ARM_VFP, arm_vfp, size); | |
11927 | } | |
11928 | ||
652451f8 YZ |
11929 | char * |
11930 | elfcore_write_aarch_tls (bfd *abfd, | |
11931 | char *buf, | |
11932 | int *bufsiz, | |
11933 | const void *aarch_tls, | |
11934 | int size) | |
11935 | { | |
11936 | char *note_name = "LINUX"; | |
11937 | return elfcore_write_note (abfd, buf, bufsiz, | |
11938 | note_name, NT_ARM_TLS, aarch_tls, size); | |
11939 | } | |
11940 | ||
11941 | char * | |
11942 | elfcore_write_aarch_hw_break (bfd *abfd, | |
11943 | char *buf, | |
11944 | int *bufsiz, | |
11945 | const void *aarch_hw_break, | |
11946 | int size) | |
11947 | { | |
11948 | char *note_name = "LINUX"; | |
11949 | return elfcore_write_note (abfd, buf, bufsiz, | |
11950 | note_name, NT_ARM_HW_BREAK, aarch_hw_break, size); | |
11951 | } | |
11952 | ||
11953 | char * | |
11954 | elfcore_write_aarch_hw_watch (bfd *abfd, | |
11955 | char *buf, | |
11956 | int *bufsiz, | |
11957 | const void *aarch_hw_watch, | |
11958 | int size) | |
11959 | { | |
11960 | char *note_name = "LINUX"; | |
11961 | return elfcore_write_note (abfd, buf, bufsiz, | |
11962 | note_name, NT_ARM_HW_WATCH, aarch_hw_watch, size); | |
11963 | } | |
11964 | ||
ad1cc4e4 AH |
11965 | char * |
11966 | elfcore_write_aarch_sve (bfd *abfd, | |
11967 | char *buf, | |
11968 | int *bufsiz, | |
11969 | const void *aarch_sve, | |
11970 | int size) | |
11971 | { | |
11972 | char *note_name = "LINUX"; | |
11973 | return elfcore_write_note (abfd, buf, bufsiz, | |
11974 | note_name, NT_ARM_SVE, aarch_sve, size); | |
11975 | } | |
11976 | ||
e6c3b5bf AH |
11977 | char * |
11978 | elfcore_write_aarch_pauth (bfd *abfd, | |
11979 | char *buf, | |
11980 | int *bufsiz, | |
11981 | const void *aarch_pauth, | |
11982 | int size) | |
11983 | { | |
11984 | char *note_name = "LINUX"; | |
11985 | return elfcore_write_note (abfd, buf, bufsiz, | |
11986 | note_name, NT_ARM_PAC_MASK, aarch_pauth, size); | |
11987 | } | |
11988 | ||
27456742 AK |
11989 | char * |
11990 | elfcore_write_arc_v2 (bfd *abfd, | |
11991 | char *buf, | |
11992 | int *bufsiz, | |
11993 | const void *arc_v2, | |
11994 | int size) | |
11995 | { | |
11996 | char *note_name = "LINUX"; | |
11997 | return elfcore_write_note (abfd, buf, bufsiz, | |
11998 | note_name, NT_ARC_V2, arc_v2, size); | |
11999 | } | |
12000 | ||
db6092f3 AB |
12001 | /* Write the buffer of csr values in CSRS (length SIZE) into the note |
12002 | buffer BUF and update *BUFSIZ. ABFD is the bfd the note is being | |
12003 | written into. Return a pointer to the new start of the note buffer, to | |
12004 | replace BUF which may no longer be valid. */ | |
12005 | ||
12006 | char * | |
12007 | elfcore_write_riscv_csr (bfd *abfd, | |
12008 | char *buf, | |
12009 | int *bufsiz, | |
12010 | const void *csrs, | |
12011 | int size) | |
12012 | { | |
12013 | const char *note_name = "GDB"; | |
12014 | return elfcore_write_note (abfd, buf, bufsiz, | |
12015 | note_name, NT_RISCV_CSR, csrs, size); | |
12016 | } | |
12017 | ||
b63a5e38 AB |
12018 | /* Write the target description (a string) pointed to by TDESC, length |
12019 | SIZE, into the note buffer BUF, and update *BUFSIZ. ABFD is the bfd the | |
12020 | note is being written into. Return a pointer to the new start of the | |
12021 | note buffer, to replace BUF which may no longer be valid. */ | |
12022 | ||
12023 | char * | |
12024 | elfcore_write_gdb_tdesc (bfd *abfd, | |
12025 | char *buf, | |
12026 | int *bufsiz, | |
12027 | const void *tdesc, | |
12028 | int size) | |
12029 | { | |
12030 | const char *note_name = "GDB"; | |
12031 | return elfcore_write_note (abfd, buf, bufsiz, | |
12032 | note_name, NT_GDB_TDESC, tdesc, size); | |
12033 | } | |
12034 | ||
bb864ac1 CES |
12035 | char * |
12036 | elfcore_write_register_note (bfd *abfd, | |
12037 | char *buf, | |
12038 | int *bufsiz, | |
12039 | const char *section, | |
12040 | const void *data, | |
12041 | int size) | |
12042 | { | |
12043 | if (strcmp (section, ".reg2") == 0) | |
12044 | return elfcore_write_prfpreg (abfd, buf, bufsiz, data, size); | |
12045 | if (strcmp (section, ".reg-xfp") == 0) | |
12046 | return elfcore_write_prxfpreg (abfd, buf, bufsiz, data, size); | |
4339cae0 L |
12047 | if (strcmp (section, ".reg-xstate") == 0) |
12048 | return elfcore_write_xstatereg (abfd, buf, bufsiz, data, size); | |
bb864ac1 CES |
12049 | if (strcmp (section, ".reg-ppc-vmx") == 0) |
12050 | return elfcore_write_ppc_vmx (abfd, buf, bufsiz, data, size); | |
89eeb0bc LM |
12051 | if (strcmp (section, ".reg-ppc-vsx") == 0) |
12052 | return elfcore_write_ppc_vsx (abfd, buf, bufsiz, data, size); | |
cb2366c1 EBM |
12053 | if (strcmp (section, ".reg-ppc-tar") == 0) |
12054 | return elfcore_write_ppc_tar (abfd, buf, bufsiz, data, size); | |
12055 | if (strcmp (section, ".reg-ppc-ppr") == 0) | |
12056 | return elfcore_write_ppc_ppr (abfd, buf, bufsiz, data, size); | |
12057 | if (strcmp (section, ".reg-ppc-dscr") == 0) | |
12058 | return elfcore_write_ppc_dscr (abfd, buf, bufsiz, data, size); | |
12059 | if (strcmp (section, ".reg-ppc-ebb") == 0) | |
12060 | return elfcore_write_ppc_ebb (abfd, buf, bufsiz, data, size); | |
12061 | if (strcmp (section, ".reg-ppc-pmu") == 0) | |
12062 | return elfcore_write_ppc_pmu (abfd, buf, bufsiz, data, size); | |
12063 | if (strcmp (section, ".reg-ppc-tm-cgpr") == 0) | |
12064 | return elfcore_write_ppc_tm_cgpr (abfd, buf, bufsiz, data, size); | |
12065 | if (strcmp (section, ".reg-ppc-tm-cfpr") == 0) | |
12066 | return elfcore_write_ppc_tm_cfpr (abfd, buf, bufsiz, data, size); | |
12067 | if (strcmp (section, ".reg-ppc-tm-cvmx") == 0) | |
12068 | return elfcore_write_ppc_tm_cvmx (abfd, buf, bufsiz, data, size); | |
12069 | if (strcmp (section, ".reg-ppc-tm-cvsx") == 0) | |
12070 | return elfcore_write_ppc_tm_cvsx (abfd, buf, bufsiz, data, size); | |
12071 | if (strcmp (section, ".reg-ppc-tm-spr") == 0) | |
12072 | return elfcore_write_ppc_tm_spr (abfd, buf, bufsiz, data, size); | |
12073 | if (strcmp (section, ".reg-ppc-tm-ctar") == 0) | |
12074 | return elfcore_write_ppc_tm_ctar (abfd, buf, bufsiz, data, size); | |
12075 | if (strcmp (section, ".reg-ppc-tm-cppr") == 0) | |
12076 | return elfcore_write_ppc_tm_cppr (abfd, buf, bufsiz, data, size); | |
12077 | if (strcmp (section, ".reg-ppc-tm-cdscr") == 0) | |
12078 | return elfcore_write_ppc_tm_cdscr (abfd, buf, bufsiz, data, size); | |
0675e188 UW |
12079 | if (strcmp (section, ".reg-s390-high-gprs") == 0) |
12080 | return elfcore_write_s390_high_gprs (abfd, buf, bufsiz, data, size); | |
d7eeb400 MS |
12081 | if (strcmp (section, ".reg-s390-timer") == 0) |
12082 | return elfcore_write_s390_timer (abfd, buf, bufsiz, data, size); | |
12083 | if (strcmp (section, ".reg-s390-todcmp") == 0) | |
12084 | return elfcore_write_s390_todcmp (abfd, buf, bufsiz, data, size); | |
12085 | if (strcmp (section, ".reg-s390-todpreg") == 0) | |
12086 | return elfcore_write_s390_todpreg (abfd, buf, bufsiz, data, size); | |
12087 | if (strcmp (section, ".reg-s390-ctrs") == 0) | |
12088 | return elfcore_write_s390_ctrs (abfd, buf, bufsiz, data, size); | |
12089 | if (strcmp (section, ".reg-s390-prefix") == 0) | |
12090 | return elfcore_write_s390_prefix (abfd, buf, bufsiz, data, size); | |
355b81d9 UW |
12091 | if (strcmp (section, ".reg-s390-last-break") == 0) |
12092 | return elfcore_write_s390_last_break (abfd, buf, bufsiz, data, size); | |
12093 | if (strcmp (section, ".reg-s390-system-call") == 0) | |
12094 | return elfcore_write_s390_system_call (abfd, buf, bufsiz, data, size); | |
abb3f6cc NC |
12095 | if (strcmp (section, ".reg-s390-tdb") == 0) |
12096 | return elfcore_write_s390_tdb (abfd, buf, bufsiz, data, size); | |
4ef9f41a AA |
12097 | if (strcmp (section, ".reg-s390-vxrs-low") == 0) |
12098 | return elfcore_write_s390_vxrs_low (abfd, buf, bufsiz, data, size); | |
12099 | if (strcmp (section, ".reg-s390-vxrs-high") == 0) | |
12100 | return elfcore_write_s390_vxrs_high (abfd, buf, bufsiz, data, size); | |
88ab90e8 AA |
12101 | if (strcmp (section, ".reg-s390-gs-cb") == 0) |
12102 | return elfcore_write_s390_gs_cb (abfd, buf, bufsiz, data, size); | |
12103 | if (strcmp (section, ".reg-s390-gs-bc") == 0) | |
12104 | return elfcore_write_s390_gs_bc (abfd, buf, bufsiz, data, size); | |
faa9a424 UW |
12105 | if (strcmp (section, ".reg-arm-vfp") == 0) |
12106 | return elfcore_write_arm_vfp (abfd, buf, bufsiz, data, size); | |
652451f8 YZ |
12107 | if (strcmp (section, ".reg-aarch-tls") == 0) |
12108 | return elfcore_write_aarch_tls (abfd, buf, bufsiz, data, size); | |
12109 | if (strcmp (section, ".reg-aarch-hw-break") == 0) | |
12110 | return elfcore_write_aarch_hw_break (abfd, buf, bufsiz, data, size); | |
12111 | if (strcmp (section, ".reg-aarch-hw-watch") == 0) | |
12112 | return elfcore_write_aarch_hw_watch (abfd, buf, bufsiz, data, size); | |
ad1cc4e4 AH |
12113 | if (strcmp (section, ".reg-aarch-sve") == 0) |
12114 | return elfcore_write_aarch_sve (abfd, buf, bufsiz, data, size); | |
e6c3b5bf AH |
12115 | if (strcmp (section, ".reg-aarch-pauth") == 0) |
12116 | return elfcore_write_aarch_pauth (abfd, buf, bufsiz, data, size); | |
27456742 AK |
12117 | if (strcmp (section, ".reg-arc-v2") == 0) |
12118 | return elfcore_write_arc_v2 (abfd, buf, bufsiz, data, size); | |
b63a5e38 AB |
12119 | if (strcmp (section, ".gdb-tdesc") == 0) |
12120 | return elfcore_write_gdb_tdesc (abfd, buf, bufsiz, data, size); | |
db6092f3 AB |
12121 | if (strcmp (section, ".reg-riscv-csr") == 0) |
12122 | return elfcore_write_riscv_csr (abfd, buf, bufsiz, data, size); | |
bb864ac1 CES |
12123 | return NULL; |
12124 | } | |
12125 | ||
4cb1265b MS |
12126 | char * |
12127 | elfcore_write_file_note (bfd *obfd, char *note_data, int *note_size, | |
12128 | const void *buf, int bufsiz) | |
12129 | { | |
12130 | return elfcore_write_note (obfd, note_data, note_size, | |
12131 | "CORE", NT_FILE, buf, bufsiz); | |
12132 | } | |
12133 | ||
0a1b45a2 | 12134 | static bool |
276da9b3 L |
12135 | elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset, |
12136 | size_t align) | |
252b5132 | 12137 | { |
c044fabd | 12138 | char *p; |
252b5132 | 12139 | |
276da9b3 L |
12140 | /* NB: CORE PT_NOTE segments may have p_align values of 0 or 1. |
12141 | gABI specifies that PT_NOTE alignment should be aligned to 4 | |
12142 | bytes for 32-bit objects and to 8 bytes for 64-bit objects. If | |
12143 | align is less than 4, we use 4 byte alignment. */ | |
12144 | if (align < 4) | |
12145 | align = 4; | |
ef135d43 | 12146 | if (align != 4 && align != 8) |
0a1b45a2 | 12147 | return false; |
276da9b3 | 12148 | |
252b5132 RH |
12149 | p = buf; |
12150 | while (p < buf + size) | |
12151 | { | |
c044fabd | 12152 | Elf_External_Note *xnp = (Elf_External_Note *) p; |
252b5132 RH |
12153 | Elf_Internal_Note in; |
12154 | ||
baea7ef1 | 12155 | if (offsetof (Elf_External_Note, name) > buf - p + size) |
0a1b45a2 | 12156 | return false; |
baea7ef1 | 12157 | |
dc810e39 | 12158 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 12159 | |
dc810e39 | 12160 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 | 12161 | in.namedata = xnp->name; |
baea7ef1 | 12162 | if (in.namesz > buf - in.namedata + size) |
0a1b45a2 | 12163 | return false; |
252b5132 | 12164 | |
dc810e39 | 12165 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
276da9b3 | 12166 | in.descdata = p + ELF_NOTE_DESC_OFFSET (in.namesz, align); |
252b5132 | 12167 | in.descpos = offset + (in.descdata - buf); |
baea7ef1 AM |
12168 | if (in.descsz != 0 |
12169 | && (in.descdata >= buf + size | |
12170 | || in.descsz > buf - in.descdata + size)) | |
0a1b45a2 | 12171 | return false; |
252b5132 | 12172 | |
718175fa | 12173 | switch (bfd_get_format (abfd)) |
07d6d2b8 | 12174 | { |
718175fa | 12175 | default: |
0a1b45a2 | 12176 | return true; |
718175fa JK |
12177 | |
12178 | case bfd_core: | |
f64e188b | 12179 | { |
8acbedd6 | 12180 | #define GROKER_ELEMENT(S,F) {S, sizeof (S) - 1, F} |
f64e188b | 12181 | struct |
718175fa | 12182 | { |
f64e188b | 12183 | const char * string; |
8acbedd6 | 12184 | size_t len; |
0a1b45a2 | 12185 | bool (*func) (bfd *, Elf_Internal_Note *); |
718175fa | 12186 | } |
f64e188b | 12187 | grokers[] = |
b15fa79e | 12188 | { |
8acbedd6 | 12189 | GROKER_ELEMENT ("", elfcore_grok_note), |
aa1ed4a9 | 12190 | GROKER_ELEMENT ("FreeBSD", elfcore_grok_freebsd_note), |
8acbedd6 KS |
12191 | GROKER_ELEMENT ("NetBSD-CORE", elfcore_grok_netbsd_note), |
12192 | GROKER_ELEMENT ( "OpenBSD", elfcore_grok_openbsd_note), | |
12193 | GROKER_ELEMENT ("QNX", elfcore_grok_nto_note), | |
864619bb KS |
12194 | GROKER_ELEMENT ("SPU/", elfcore_grok_spu_note), |
12195 | GROKER_ELEMENT ("GNU", elfobj_grok_gnu_note) | |
f64e188b | 12196 | }; |
8acbedd6 | 12197 | #undef GROKER_ELEMENT |
f64e188b NC |
12198 | int i; |
12199 | ||
12200 | for (i = ARRAY_SIZE (grokers); i--;) | |
8acbedd6 KS |
12201 | { |
12202 | if (in.namesz >= grokers[i].len | |
12203 | && strncmp (in.namedata, grokers[i].string, | |
12204 | grokers[i].len) == 0) | |
12205 | { | |
12206 | if (! grokers[i].func (abfd, & in)) | |
0a1b45a2 | 12207 | return false; |
8acbedd6 KS |
12208 | break; |
12209 | } | |
12210 | } | |
f64e188b NC |
12211 | break; |
12212 | } | |
718175fa JK |
12213 | |
12214 | case bfd_object: | |
12215 | if (in.namesz == sizeof "GNU" && strcmp (in.namedata, "GNU") == 0) | |
12216 | { | |
12217 | if (! elfobj_grok_gnu_note (abfd, &in)) | |
0a1b45a2 | 12218 | return false; |
718175fa | 12219 | } |
e21e5835 NC |
12220 | else if (in.namesz == sizeof "stapsdt" |
12221 | && strcmp (in.namedata, "stapsdt") == 0) | |
12222 | { | |
12223 | if (! elfobj_grok_stapsdt_note (abfd, &in)) | |
0a1b45a2 | 12224 | return false; |
e21e5835 | 12225 | } |
718175fa | 12226 | break; |
08a40648 | 12227 | } |
252b5132 | 12228 | |
276da9b3 | 12229 | p += ELF_NOTE_NEXT_OFFSET (in.namesz, in.descsz, align); |
252b5132 RH |
12230 | } |
12231 | ||
0a1b45a2 | 12232 | return true; |
718175fa JK |
12233 | } |
12234 | ||
0a1b45a2 | 12235 | bool |
276da9b3 L |
12236 | elf_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size, |
12237 | size_t align) | |
718175fa JK |
12238 | { |
12239 | char *buf; | |
12240 | ||
957e1fc1 | 12241 | if (size == 0 || (size + 1) == 0) |
0a1b45a2 | 12242 | return true; |
718175fa JK |
12243 | |
12244 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) | |
0a1b45a2 | 12245 | return false; |
718175fa | 12246 | |
2bb3687b | 12247 | buf = (char *) _bfd_malloc_and_read (abfd, size + 1, size); |
718175fa | 12248 | if (buf == NULL) |
0a1b45a2 | 12249 | return false; |
718175fa | 12250 | |
f64e188b NC |
12251 | /* PR 17512: file: ec08f814 |
12252 | 0-termintate the buffer so that string searches will not overflow. */ | |
12253 | buf[size] = 0; | |
12254 | ||
2bb3687b | 12255 | if (!elf_parse_notes (abfd, buf, size, offset, align)) |
718175fa JK |
12256 | { |
12257 | free (buf); | |
0a1b45a2 | 12258 | return false; |
718175fa JK |
12259 | } |
12260 | ||
252b5132 | 12261 | free (buf); |
0a1b45a2 | 12262 | return true; |
252b5132 | 12263 | } |
98d8431c JB |
12264 | \f |
12265 | /* Providing external access to the ELF program header table. */ | |
12266 | ||
12267 | /* Return an upper bound on the number of bytes required to store a | |
12268 | copy of ABFD's program header table entries. Return -1 if an error | |
12269 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 12270 | |
98d8431c | 12271 | long |
217aa764 | 12272 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
12273 | { |
12274 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
12275 | { | |
12276 | bfd_set_error (bfd_error_wrong_format); | |
12277 | return -1; | |
12278 | } | |
12279 | ||
936e320b | 12280 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
12281 | } |
12282 | ||
98d8431c JB |
12283 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
12284 | will be stored as an array of Elf_Internal_Phdr structures, as | |
12285 | defined in include/elf/internal.h. To find out how large the | |
12286 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
12287 | ||
12288 | Return the number of program header table entries read, or -1 if an | |
12289 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 12290 | |
98d8431c | 12291 | int |
217aa764 | 12292 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
12293 | { |
12294 | int num_phdrs; | |
12295 | ||
12296 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
12297 | { | |
12298 | bfd_set_error (bfd_error_wrong_format); | |
12299 | return -1; | |
12300 | } | |
12301 | ||
12302 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
01bcaf63 TT |
12303 | if (num_phdrs != 0) |
12304 | memcpy (phdrs, elf_tdata (abfd)->phdr, | |
12305 | num_phdrs * sizeof (Elf_Internal_Phdr)); | |
98d8431c JB |
12306 | |
12307 | return num_phdrs; | |
12308 | } | |
ae4221d7 | 12309 | |
db6751f2 | 12310 | enum elf_reloc_type_class |
7e612e98 AM |
12311 | _bfd_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
12312 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
12313 | const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) | |
db6751f2 JJ |
12314 | { |
12315 | return reloc_class_normal; | |
12316 | } | |
f8df10f4 | 12317 | |
47d9a591 | 12318 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
12319 | relocation against a local symbol. */ |
12320 | ||
12321 | bfd_vma | |
217aa764 AM |
12322 | _bfd_elf_rela_local_sym (bfd *abfd, |
12323 | Elf_Internal_Sym *sym, | |
8517fae7 | 12324 | asection **psec, |
217aa764 | 12325 | Elf_Internal_Rela *rel) |
f8df10f4 | 12326 | { |
8517fae7 | 12327 | asection *sec = *psec; |
f8df10f4 JJ |
12328 | bfd_vma relocation; |
12329 | ||
6835821b AM |
12330 | relocation = (sec->output_section->vma |
12331 | + sec->output_offset | |
12332 | + sym->st_value); | |
f8df10f4 | 12333 | if ((sec->flags & SEC_MERGE) |
c629eae0 | 12334 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
dbaa2011 | 12335 | && sec->sec_info_type == SEC_INFO_TYPE_MERGE) |
f8df10f4 | 12336 | { |
f8df10f4 | 12337 | rel->r_addend = |
8517fae7 | 12338 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 12339 | elf_section_data (sec)->sec_info, |
753731ee AM |
12340 | sym->st_value + rel->r_addend); |
12341 | if (sec != *psec) | |
12342 | { | |
12343 | /* If we have changed the section, and our original section is | |
12344 | marked with SEC_EXCLUDE, it means that the original | |
12345 | SEC_MERGE section has been completely subsumed in some | |
12346 | other SEC_MERGE section. In this case, we need to leave | |
12347 | some info around for --emit-relocs. */ | |
12348 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
12349 | sec->kept_section = *psec; | |
12350 | sec = *psec; | |
12351 | } | |
8517fae7 AM |
12352 | rel->r_addend -= relocation; |
12353 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
12354 | } |
12355 | return relocation; | |
12356 | } | |
c629eae0 JJ |
12357 | |
12358 | bfd_vma | |
217aa764 AM |
12359 | _bfd_elf_rel_local_sym (bfd *abfd, |
12360 | Elf_Internal_Sym *sym, | |
12361 | asection **psec, | |
12362 | bfd_vma addend) | |
47d9a591 | 12363 | { |
c629eae0 JJ |
12364 | asection *sec = *psec; |
12365 | ||
6835821b | 12366 | if (sec->sec_info_type != SEC_INFO_TYPE_MERGE) |
c629eae0 JJ |
12367 | return sym->st_value + addend; |
12368 | ||
12369 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 12370 | elf_section_data (sec)->sec_info, |
753731ee | 12371 | sym->st_value + addend); |
c629eae0 JJ |
12372 | } |
12373 | ||
37b01f6a DG |
12374 | /* Adjust an address within a section. Given OFFSET within SEC, return |
12375 | the new offset within the section, based upon changes made to the | |
12376 | section. Returns -1 if the offset is now invalid. | |
12377 | The offset (in abnd out) is in target sized bytes, however big a | |
12378 | byte may be. */ | |
12379 | ||
c629eae0 | 12380 | bfd_vma |
217aa764 | 12381 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 12382 | struct bfd_link_info *info, |
217aa764 AM |
12383 | asection *sec, |
12384 | bfd_vma offset) | |
c629eae0 | 12385 | { |
68bfbfcc | 12386 | switch (sec->sec_info_type) |
65765700 | 12387 | { |
dbaa2011 | 12388 | case SEC_INFO_TYPE_STABS: |
eea6121a AM |
12389 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
12390 | offset); | |
dbaa2011 | 12391 | case SEC_INFO_TYPE_EH_FRAME: |
92e4ec35 | 12392 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
37b01f6a | 12393 | |
65765700 | 12394 | default: |
310fd250 L |
12395 | if ((sec->flags & SEC_ELF_REVERSE_COPY) != 0) |
12396 | { | |
37b01f6a | 12397 | /* Reverse the offset. */ |
310fd250 L |
12398 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
12399 | bfd_size_type address_size = bed->s->arch_size / 8; | |
37b01f6a DG |
12400 | |
12401 | /* address_size and sec->size are in octets. Convert | |
12402 | to bytes before subtracting the original offset. */ | |
61826503 | 12403 | offset = ((sec->size - address_size) |
bb294208 | 12404 | / bfd_octets_per_byte (abfd, sec) - offset); |
310fd250 | 12405 | } |
65765700 JJ |
12406 | return offset; |
12407 | } | |
c629eae0 | 12408 | } |
3333a7c3 RM |
12409 | \f |
12410 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
12411 | reconstruct an ELF file by reading the segments out of remote memory | |
12412 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
12413 | points to. If not null, *LOADBASEP is filled in with the difference | |
12414 | between the VMAs from which the segments were read, and the VMAs the | |
12415 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
12416 | ||
12417 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
12418 | remote memory at target address VMA into the local buffer at MYADDR; it | |
12419 | should return zero on success or an `errno' code on failure. TEMPL must | |
12420 | be a BFD for an ELF target with the word size and byte order found in | |
12421 | the remote memory. */ | |
12422 | ||
12423 | bfd * | |
217aa764 AM |
12424 | bfd_elf_bfd_from_remote_memory |
12425 | (bfd *templ, | |
12426 | bfd_vma ehdr_vma, | |
f0a5d95a | 12427 | bfd_size_type size, |
217aa764 | 12428 | bfd_vma *loadbasep, |
fe78531d | 12429 | int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type)) |
3333a7c3 RM |
12430 | { |
12431 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
5979d6b6 | 12432 | (templ, ehdr_vma, size, loadbasep, target_read_memory); |
3333a7c3 | 12433 | } |
4c45e5c9 JJ |
12434 | \f |
12435 | long | |
c9727e01 AM |
12436 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
12437 | long symcount ATTRIBUTE_UNUSED, | |
12438 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 12439 | long dynsymcount, |
c9727e01 AM |
12440 | asymbol **dynsyms, |
12441 | asymbol **ret) | |
4c45e5c9 JJ |
12442 | { |
12443 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
12444 | asection *relplt; | |
12445 | asymbol *s; | |
12446 | const char *relplt_name; | |
0a1b45a2 | 12447 | bool (*slurp_relocs) (bfd *, asection *, asymbol **, bool); |
4c45e5c9 JJ |
12448 | arelent *p; |
12449 | long count, i, n; | |
12450 | size_t size; | |
12451 | Elf_Internal_Shdr *hdr; | |
12452 | char *names; | |
12453 | asection *plt; | |
12454 | ||
8615f3f2 AM |
12455 | *ret = NULL; |
12456 | ||
90e3cdf2 JJ |
12457 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
12458 | return 0; | |
12459 | ||
8615f3f2 AM |
12460 | if (dynsymcount <= 0) |
12461 | return 0; | |
12462 | ||
4c45e5c9 JJ |
12463 | if (!bed->plt_sym_val) |
12464 | return 0; | |
12465 | ||
12466 | relplt_name = bed->relplt_name; | |
12467 | if (relplt_name == NULL) | |
d35fd659 | 12468 | relplt_name = bed->rela_plts_and_copies_p ? ".rela.plt" : ".rel.plt"; |
4c45e5c9 JJ |
12469 | relplt = bfd_get_section_by_name (abfd, relplt_name); |
12470 | if (relplt == NULL) | |
12471 | return 0; | |
12472 | ||
12473 | hdr = &elf_section_data (relplt)->this_hdr; | |
12474 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
12475 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
12476 | return 0; | |
12477 | ||
12478 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
12479 | if (plt == NULL) | |
12480 | return 0; | |
12481 | ||
12482 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
0a1b45a2 | 12483 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, true)) |
4c45e5c9 JJ |
12484 | return -1; |
12485 | ||
eea6121a | 12486 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
12487 | size = count * sizeof (asymbol); |
12488 | p = relplt->relocation; | |
cb53bf42 | 12489 | for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel) |
041de40d AM |
12490 | { |
12491 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
12492 | if (p->addend != 0) | |
12493 | { | |
12494 | #ifdef BFD64 | |
12495 | size += sizeof ("+0x") - 1 + 8 + 8 * (bed->s->elfclass == ELFCLASS64); | |
12496 | #else | |
12497 | size += sizeof ("+0x") - 1 + 8; | |
12498 | #endif | |
12499 | } | |
12500 | } | |
4c45e5c9 | 12501 | |
a50b1753 | 12502 | s = *ret = (asymbol *) bfd_malloc (size); |
4c45e5c9 JJ |
12503 | if (s == NULL) |
12504 | return -1; | |
12505 | ||
12506 | names = (char *) (s + count); | |
12507 | p = relplt->relocation; | |
12508 | n = 0; | |
cb53bf42 | 12509 | for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel) |
4c45e5c9 JJ |
12510 | { |
12511 | size_t len; | |
12512 | bfd_vma addr; | |
12513 | ||
12514 | addr = bed->plt_sym_val (i, plt, p); | |
12515 | if (addr == (bfd_vma) -1) | |
12516 | continue; | |
12517 | ||
12518 | *s = **p->sym_ptr_ptr; | |
65a7a66f AM |
12519 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since |
12520 | we are defining a symbol, ensure one of them is set. */ | |
12521 | if ((s->flags & BSF_LOCAL) == 0) | |
12522 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 12523 | s->flags |= BSF_SYNTHETIC; |
4c45e5c9 JJ |
12524 | s->section = plt; |
12525 | s->value = addr - plt->vma; | |
12526 | s->name = names; | |
8f39ba8e | 12527 | s->udata.p = NULL; |
4c45e5c9 JJ |
12528 | len = strlen ((*p->sym_ptr_ptr)->name); |
12529 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
12530 | names += len; | |
041de40d AM |
12531 | if (p->addend != 0) |
12532 | { | |
1d770845 | 12533 | char buf[30], *a; |
d324f6d6 | 12534 | |
041de40d AM |
12535 | memcpy (names, "+0x", sizeof ("+0x") - 1); |
12536 | names += sizeof ("+0x") - 1; | |
1d770845 L |
12537 | bfd_sprintf_vma (abfd, buf, p->addend); |
12538 | for (a = buf; *a == '0'; ++a) | |
12539 | ; | |
12540 | len = strlen (a); | |
12541 | memcpy (names, a, len); | |
12542 | names += len; | |
041de40d | 12543 | } |
4c45e5c9 JJ |
12544 | memcpy (names, "@plt", sizeof ("@plt")); |
12545 | names += sizeof ("@plt"); | |
8f39ba8e | 12546 | ++s, ++n; |
4c45e5c9 JJ |
12547 | } |
12548 | ||
12549 | return n; | |
12550 | } | |
3d7f7666 | 12551 | |
821e6ff6 AM |
12552 | /* It is only used by x86-64 so far. |
12553 | ??? This repeats *COM* id of zero. sec->id is supposed to be unique, | |
7eacd66b AM |
12554 | but current usage would allow all of _bfd_std_section to be zero. */ |
12555 | static const asymbol lcomm_sym | |
12556 | = GLOBAL_SYM_INIT ("LARGE_COMMON", &_bfd_elf_large_com_section); | |
3b22753a | 12557 | asection _bfd_elf_large_com_section |
7eacd66b | 12558 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, &lcomm_sym, |
821e6ff6 | 12559 | "LARGE_COMMON", 0, SEC_IS_COMMON); |
ecca9871 | 12560 | |
0a1b45a2 | 12561 | bool |
cc364be6 | 12562 | _bfd_elf_final_write_processing (bfd *abfd) |
06f44071 AM |
12563 | { |
12564 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
d1036acb L |
12565 | |
12566 | i_ehdrp = elf_elfheader (abfd); | |
12567 | ||
06f44071 AM |
12568 | if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE) |
12569 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
d8045f23 | 12570 | |
df3a023b | 12571 | /* Set the osabi field to ELFOSABI_GNU if the binary contains |
99fabbc9 JL |
12572 | SHF_GNU_MBIND or SHF_GNU_RETAIN sections or symbols of STT_GNU_IFUNC type |
12573 | or STB_GNU_UNIQUE binding. */ | |
cc364be6 AM |
12574 | if (elf_tdata (abfd)->has_gnu_osabi != 0) |
12575 | { | |
12576 | if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE) | |
12577 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_GNU; | |
12578 | else if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_GNU | |
12579 | && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_FREEBSD) | |
12580 | { | |
12581 | if (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_mbind) | |
99fabbc9 JL |
12582 | _bfd_error_handler (_("GNU_MBIND section is supported only by GNU " |
12583 | "and FreeBSD targets")); | |
cc364be6 | 12584 | if (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_ifunc) |
99fabbc9 JL |
12585 | _bfd_error_handler (_("symbol type STT_GNU_IFUNC is supported " |
12586 | "only by GNU and FreeBSD targets")); | |
cc364be6 | 12587 | if (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_unique) |
99fabbc9 JL |
12588 | _bfd_error_handler (_("symbol binding STB_GNU_UNIQUE is supported " |
12589 | "only by GNU and FreeBSD targets")); | |
12590 | if (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_retain) | |
12591 | _bfd_error_handler (_("GNU_RETAIN section is supported " | |
12592 | "only by GNU and FreeBSD targets")); | |
9aea1e31 | 12593 | bfd_set_error (bfd_error_sorry); |
0a1b45a2 | 12594 | return false; |
cc364be6 AM |
12595 | } |
12596 | } | |
0a1b45a2 | 12597 | return true; |
d1036acb | 12598 | } |
fcb93ecf PB |
12599 | |
12600 | ||
12601 | /* Return TRUE for ELF symbol types that represent functions. | |
12602 | This is the default version of this function, which is sufficient for | |
d8045f23 | 12603 | most targets. It returns true if TYPE is STT_FUNC or STT_GNU_IFUNC. */ |
fcb93ecf | 12604 | |
0a1b45a2 | 12605 | bool |
fcb93ecf PB |
12606 | _bfd_elf_is_function_type (unsigned int type) |
12607 | { | |
d8045f23 NC |
12608 | return (type == STT_FUNC |
12609 | || type == STT_GNU_IFUNC); | |
fcb93ecf | 12610 | } |
9f296da3 | 12611 | |
aef36ac1 AM |
12612 | /* If the ELF symbol SYM might be a function in SEC, return the |
12613 | function size and set *CODE_OFF to the function's entry point, | |
12614 | otherwise return zero. */ | |
9f296da3 | 12615 | |
aef36ac1 AM |
12616 | bfd_size_type |
12617 | _bfd_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
12618 | bfd_vma *code_off) | |
9f296da3 | 12619 | { |
aef36ac1 AM |
12620 | bfd_size_type size; |
12621 | ||
ff9e0f5b | 12622 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT |
aef36ac1 AM |
12623 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0 |
12624 | || sym->section != sec) | |
12625 | return 0; | |
ff9e0f5b | 12626 | |
ff9e0f5b | 12627 | *code_off = sym->value; |
aef36ac1 AM |
12628 | size = 0; |
12629 | if (!(sym->flags & BSF_SYNTHETIC)) | |
12630 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
12631 | if (size == 0) | |
12632 | size = 1; | |
12633 | return size; | |
9f296da3 | 12634 | } |
a8e14f4c NC |
12635 | |
12636 | /* Set to non-zero to enable some debug messages. */ | |
12637 | #define DEBUG_SECONDARY_RELOCS 0 | |
12638 | ||
12639 | /* An internal-to-the-bfd-library only section type | |
12640 | used to indicate a cached secondary reloc section. */ | |
12641 | #define SHT_SECONDARY_RELOC (SHT_LOOS + SHT_RELA) | |
12642 | ||
12643 | /* Create a BFD section to hold a secondary reloc section. */ | |
12644 | ||
0a1b45a2 | 12645 | bool |
a8e14f4c NC |
12646 | _bfd_elf_init_secondary_reloc_section (bfd * abfd, |
12647 | Elf_Internal_Shdr *hdr, | |
12648 | const char * name, | |
12649 | unsigned int shindex) | |
12650 | { | |
12651 | /* We only support RELA secondary relocs. */ | |
12652 | if (hdr->sh_type != SHT_RELA) | |
0a1b45a2 | 12653 | return false; |
a8e14f4c NC |
12654 | |
12655 | #if DEBUG_SECONDARY_RELOCS | |
12656 | fprintf (stderr, "secondary reloc section %s encountered\n", name); | |
12657 | #endif | |
12658 | hdr->sh_type = SHT_SECONDARY_RELOC; | |
12659 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
12660 | } | |
12661 | ||
12662 | /* Read in any secondary relocs associated with SEC. */ | |
12663 | ||
0a1b45a2 | 12664 | bool |
f60742b2 NC |
12665 | _bfd_elf_slurp_secondary_reloc_section (bfd * abfd, |
12666 | asection * sec, | |
12667 | asymbol ** symbols, | |
0a1b45a2 | 12668 | bool dynamic) |
a8e14f4c NC |
12669 | { |
12670 | const struct elf_backend_data * const ebd = get_elf_backend_data (abfd); | |
12671 | asection * relsec; | |
0a1b45a2 | 12672 | bool result = true; |
a8e14f4c NC |
12673 | bfd_vma (*r_sym) (bfd_vma); |
12674 | ||
12675 | #if BFD_DEFAULT_TARGET_SIZE > 32 | |
12676 | if (bfd_arch_bits_per_address (abfd) != 32) | |
12677 | r_sym = elf64_r_sym; | |
12678 | else | |
12679 | #endif | |
12680 | r_sym = elf32_r_sym; | |
12681 | ||
12682 | /* Discover if there are any secondary reloc sections | |
12683 | associated with SEC. */ | |
12684 | for (relsec = abfd->sections; relsec != NULL; relsec = relsec->next) | |
12685 | { | |
12686 | Elf_Internal_Shdr * hdr = & elf_section_data (relsec)->this_hdr; | |
12687 | ||
12688 | if (hdr->sh_type == SHT_SECONDARY_RELOC | |
8642dafa AM |
12689 | && hdr->sh_info == (unsigned) elf_section_data (sec)->this_idx |
12690 | && (hdr->sh_entsize == ebd->s->sizeof_rel | |
12691 | || hdr->sh_entsize == ebd->s->sizeof_rela)) | |
a8e14f4c NC |
12692 | { |
12693 | bfd_byte * native_relocs; | |
12694 | bfd_byte * native_reloc; | |
12695 | arelent * internal_relocs; | |
12696 | arelent * internal_reloc; | |
12697 | unsigned int i; | |
12698 | unsigned int entsize; | |
12699 | unsigned int symcount; | |
12700 | unsigned int reloc_count; | |
12701 | size_t amt; | |
12702 | ||
12703 | if (ebd->elf_info_to_howto == NULL) | |
0a1b45a2 | 12704 | return false; |
a8e14f4c NC |
12705 | |
12706 | #if DEBUG_SECONDARY_RELOCS | |
12707 | fprintf (stderr, "read secondary relocs for %s from %s\n", | |
12708 | sec->name, relsec->name); | |
12709 | #endif | |
12710 | entsize = hdr->sh_entsize; | |
12711 | ||
12712 | native_relocs = bfd_malloc (hdr->sh_size); | |
12713 | if (native_relocs == NULL) | |
12714 | { | |
0a1b45a2 | 12715 | result = false; |
a8e14f4c NC |
12716 | continue; |
12717 | } | |
12718 | ||
12719 | reloc_count = NUM_SHDR_ENTRIES (hdr); | |
12720 | if (_bfd_mul_overflow (reloc_count, sizeof (arelent), & amt)) | |
12721 | { | |
ecbbbdba | 12722 | free (native_relocs); |
a8e14f4c | 12723 | bfd_set_error (bfd_error_file_too_big); |
0a1b45a2 | 12724 | result = false; |
a8e14f4c NC |
12725 | continue; |
12726 | } | |
12727 | ||
12728 | internal_relocs = (arelent *) bfd_alloc (abfd, amt); | |
12729 | if (internal_relocs == NULL) | |
12730 | { | |
12731 | free (native_relocs); | |
0a1b45a2 | 12732 | result = false; |
a8e14f4c NC |
12733 | continue; |
12734 | } | |
12735 | ||
12736 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
12737 | || (bfd_bread (native_relocs, hdr->sh_size, abfd) | |
12738 | != hdr->sh_size)) | |
12739 | { | |
12740 | free (native_relocs); | |
ecbbbdba NC |
12741 | /* The internal_relocs will be freed when |
12742 | the memory for the bfd is released. */ | |
0a1b45a2 | 12743 | result = false; |
a8e14f4c NC |
12744 | continue; |
12745 | } | |
12746 | ||
f60742b2 NC |
12747 | if (dynamic) |
12748 | symcount = bfd_get_dynamic_symcount (abfd); | |
12749 | else | |
12750 | symcount = bfd_get_symcount (abfd); | |
a8e14f4c NC |
12751 | |
12752 | for (i = 0, internal_reloc = internal_relocs, | |
12753 | native_reloc = native_relocs; | |
12754 | i < reloc_count; | |
12755 | i++, internal_reloc++, native_reloc += entsize) | |
12756 | { | |
0a1b45a2 | 12757 | bool res; |
a8e14f4c NC |
12758 | Elf_Internal_Rela rela; |
12759 | ||
8ee54925 NC |
12760 | if (entsize == ebd->s->sizeof_rel) |
12761 | ebd->s->swap_reloc_in (abfd, native_reloc, & rela); | |
12762 | else /* entsize == ebd->s->sizeof_rela */ | |
12763 | ebd->s->swap_reloca_in (abfd, native_reloc, & rela); | |
a8e14f4c NC |
12764 | |
12765 | /* The address of an ELF reloc is section relative for an object | |
12766 | file, and absolute for an executable file or shared library. | |
12767 | The address of a normal BFD reloc is always section relative, | |
12768 | and the address of a dynamic reloc is absolute.. */ | |
12769 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
12770 | internal_reloc->address = rela.r_offset; | |
12771 | else | |
12772 | internal_reloc->address = rela.r_offset - sec->vma; | |
12773 | ||
12774 | if (r_sym (rela.r_info) == STN_UNDEF) | |
12775 | { | |
12776 | /* FIXME: This and the error case below mean that we | |
12777 | have a symbol on relocs that is not elf_symbol_type. */ | |
12778 | internal_reloc->sym_ptr_ptr = | |
12779 | bfd_abs_section_ptr->symbol_ptr_ptr; | |
12780 | } | |
12781 | else if (r_sym (rela.r_info) > symcount) | |
12782 | { | |
12783 | _bfd_error_handler | |
12784 | /* xgettext:c-format */ | |
12785 | (_("%pB(%pA): relocation %d has invalid symbol index %ld"), | |
12786 | abfd, sec, i, (long) r_sym (rela.r_info)); | |
12787 | bfd_set_error (bfd_error_bad_value); | |
12788 | internal_reloc->sym_ptr_ptr = | |
12789 | bfd_abs_section_ptr->symbol_ptr_ptr; | |
0a1b45a2 | 12790 | result = false; |
a8e14f4c NC |
12791 | } |
12792 | else | |
12793 | { | |
12794 | asymbol **ps; | |
12795 | ||
12796 | ps = symbols + r_sym (rela.r_info) - 1; | |
a8e14f4c NC |
12797 | internal_reloc->sym_ptr_ptr = ps; |
12798 | /* Make sure that this symbol is not removed by strip. */ | |
12799 | (*ps)->flags |= BSF_KEEP; | |
12800 | } | |
12801 | ||
12802 | internal_reloc->addend = rela.r_addend; | |
12803 | ||
12804 | res = ebd->elf_info_to_howto (abfd, internal_reloc, & rela); | |
12805 | if (! res || internal_reloc->howto == NULL) | |
12806 | { | |
12807 | #if DEBUG_SECONDARY_RELOCS | |
12808 | fprintf (stderr, "there is no howto associated with reloc %lx\n", | |
12809 | rela.r_info); | |
12810 | #endif | |
0a1b45a2 | 12811 | result = false; |
a8e14f4c NC |
12812 | } |
12813 | } | |
12814 | ||
12815 | free (native_relocs); | |
12816 | /* Store the internal relocs. */ | |
12817 | elf_section_data (relsec)->sec_info = internal_relocs; | |
12818 | } | |
12819 | } | |
12820 | ||
12821 | return result; | |
12822 | } | |
12823 | ||
12824 | /* Set the ELF section header fields of an output secondary reloc section. */ | |
12825 | ||
0a1b45a2 | 12826 | bool |
a8e14f4c NC |
12827 | _bfd_elf_copy_special_section_fields (const bfd * ibfd ATTRIBUTE_UNUSED, |
12828 | bfd * obfd ATTRIBUTE_UNUSED, | |
12829 | const Elf_Internal_Shdr * isection, | |
12830 | Elf_Internal_Shdr * osection) | |
12831 | { | |
12832 | asection * isec; | |
12833 | asection * osec; | |
44466e45 | 12834 | struct bfd_elf_section_data * esd; |
a8e14f4c NC |
12835 | |
12836 | if (isection == NULL) | |
0a1b45a2 | 12837 | return false; |
a8e14f4c NC |
12838 | |
12839 | if (isection->sh_type != SHT_SECONDARY_RELOC) | |
0a1b45a2 | 12840 | return true; |
a8e14f4c NC |
12841 | |
12842 | isec = isection->bfd_section; | |
12843 | if (isec == NULL) | |
0a1b45a2 | 12844 | return false; |
a8e14f4c NC |
12845 | |
12846 | osec = osection->bfd_section; | |
12847 | if (osec == NULL) | |
0a1b45a2 | 12848 | return false; |
a8e14f4c | 12849 | |
44466e45 NC |
12850 | esd = elf_section_data (osec); |
12851 | BFD_ASSERT (esd->sec_info == NULL); | |
12852 | esd->sec_info = elf_section_data (isec)->sec_info; | |
a8e14f4c NC |
12853 | osection->sh_type = SHT_RELA; |
12854 | osection->sh_link = elf_onesymtab (obfd); | |
12855 | if (osection->sh_link == 0) | |
12856 | { | |
12857 | /* There is no symbol table - we are hosed... */ | |
12858 | _bfd_error_handler | |
12859 | /* xgettext:c-format */ | |
12860 | (_("%pB(%pA): link section cannot be set because the output file does not have a symbol table"), | |
12861 | obfd, osec); | |
12862 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 12863 | return false; |
a8e14f4c NC |
12864 | } |
12865 | ||
12866 | /* Find the output section that corresponds to the isection's sh_info link. */ | |
327ef784 NC |
12867 | if (isection->sh_info == 0 |
12868 | || isection->sh_info >= elf_numsections (ibfd)) | |
12869 | { | |
12870 | _bfd_error_handler | |
12871 | /* xgettext:c-format */ | |
12872 | (_("%pB(%pA): info section index is invalid"), | |
12873 | obfd, osec); | |
12874 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 12875 | return false; |
327ef784 NC |
12876 | } |
12877 | ||
a8e14f4c NC |
12878 | isection = elf_elfsections (ibfd)[isection->sh_info]; |
12879 | ||
327ef784 NC |
12880 | if (isection == NULL |
12881 | || isection->bfd_section == NULL | |
12882 | || isection->bfd_section->output_section == NULL) | |
12883 | { | |
12884 | _bfd_error_handler | |
12885 | /* xgettext:c-format */ | |
12886 | (_("%pB(%pA): info section index cannot be set because the section is not in the output"), | |
12887 | obfd, osec); | |
12888 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 12889 | return false; |
327ef784 NC |
12890 | } |
12891 | ||
44466e45 NC |
12892 | esd = elf_section_data (isection->bfd_section->output_section); |
12893 | BFD_ASSERT (esd != NULL); | |
12894 | osection->sh_info = esd->this_idx; | |
0a1b45a2 | 12895 | esd->has_secondary_relocs = true; |
a8e14f4c NC |
12896 | #if DEBUG_SECONDARY_RELOCS |
12897 | fprintf (stderr, "update header of %s, sh_link = %u, sh_info = %u\n", | |
12898 | osec->name, osection->sh_link, osection->sh_info); | |
44466e45 NC |
12899 | fprintf (stderr, "mark section %s as having secondary relocs\n", |
12900 | bfd_section_name (isection->bfd_section->output_section)); | |
a8e14f4c NC |
12901 | #endif |
12902 | ||
0a1b45a2 | 12903 | return true; |
a8e14f4c NC |
12904 | } |
12905 | ||
44466e45 NC |
12906 | /* Write out a secondary reloc section. |
12907 | ||
12908 | FIXME: Currently this function can result in a serious performance penalty | |
12909 | for files with secondary relocs and lots of sections. The proper way to | |
12910 | fix this is for _bfd_elf_copy_special_section_fields() to chain secondary | |
12911 | relocs together and then to have this function just walk that chain. */ | |
a8e14f4c | 12912 | |
0a1b45a2 | 12913 | bool |
a8e14f4c NC |
12914 | _bfd_elf_write_secondary_reloc_section (bfd *abfd, asection *sec) |
12915 | { | |
12916 | const struct elf_backend_data * const ebd = get_elf_backend_data (abfd); | |
12917 | bfd_vma addr_offset; | |
12918 | asection * relsec; | |
12919 | bfd_vma (*r_info) (bfd_vma, bfd_vma); | |
0a1b45a2 | 12920 | bool result = true; |
ac4bf06c NC |
12921 | |
12922 | if (sec == NULL) | |
0a1b45a2 | 12923 | return false; |
a8e14f4c NC |
12924 | |
12925 | #if BFD_DEFAULT_TARGET_SIZE > 32 | |
12926 | if (bfd_arch_bits_per_address (abfd) != 32) | |
12927 | r_info = elf64_r_info; | |
12928 | else | |
12929 | #endif | |
12930 | r_info = elf32_r_info; | |
12931 | ||
a8e14f4c NC |
12932 | /* The address of an ELF reloc is section relative for an object |
12933 | file, and absolute for an executable file or shared library. | |
12934 | The address of a BFD reloc is always section relative. */ | |
12935 | addr_offset = 0; | |
12936 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) | |
12937 | addr_offset = sec->vma; | |
12938 | ||
12939 | /* Discover if there are any secondary reloc sections | |
12940 | associated with SEC. */ | |
12941 | for (relsec = abfd->sections; relsec != NULL; relsec = relsec->next) | |
12942 | { | |
12943 | const struct bfd_elf_section_data * const esd = elf_section_data (relsec); | |
12944 | Elf_Internal_Shdr * const hdr = (Elf_Internal_Shdr *) & esd->this_hdr; | |
12945 | ||
12946 | if (hdr->sh_type == SHT_RELA | |
12947 | && hdr->sh_info == (unsigned) elf_section_data (sec)->this_idx) | |
12948 | { | |
12949 | asymbol * last_sym; | |
12950 | int last_sym_idx; | |
12951 | unsigned int reloc_count; | |
12952 | unsigned int idx; | |
8ee54925 | 12953 | unsigned int entsize; |
a8e14f4c NC |
12954 | arelent * src_irel; |
12955 | bfd_byte * dst_rela; | |
12956 | ||
ac4bf06c NC |
12957 | if (hdr->contents != NULL) |
12958 | { | |
12959 | _bfd_error_handler | |
12960 | /* xgettext:c-format */ | |
12961 | (_("%pB(%pA): error: secondary reloc section processed twice"), | |
12962 | abfd, relsec); | |
12963 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 12964 | result = false; |
ac4bf06c NC |
12965 | continue; |
12966 | } | |
a8e14f4c | 12967 | |
8ee54925 NC |
12968 | entsize = hdr->sh_entsize; |
12969 | if (entsize == 0) | |
ac267c75 NC |
12970 | { |
12971 | _bfd_error_handler | |
12972 | /* xgettext:c-format */ | |
12973 | (_("%pB(%pA): error: secondary reloc section has zero sized entries"), | |
12974 | abfd, relsec); | |
12975 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 12976 | result = false; |
ac267c75 NC |
12977 | continue; |
12978 | } | |
8ee54925 NC |
12979 | else if (entsize != ebd->s->sizeof_rel |
12980 | && entsize != ebd->s->sizeof_rela) | |
12981 | { | |
12982 | _bfd_error_handler | |
12983 | /* xgettext:c-format */ | |
12984 | (_("%pB(%pA): error: secondary reloc section has non-standard sized entries"), | |
12985 | abfd, relsec); | |
12986 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 12987 | result = false; |
8ee54925 NC |
12988 | continue; |
12989 | } | |
ac267c75 | 12990 | |
8ee54925 | 12991 | reloc_count = hdr->sh_size / entsize; |
ac4bf06c NC |
12992 | if (reloc_count <= 0) |
12993 | { | |
12994 | _bfd_error_handler | |
12995 | /* xgettext:c-format */ | |
12996 | (_("%pB(%pA): error: secondary reloc section is empty!"), | |
12997 | abfd, relsec); | |
12998 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 12999 | result = false; |
ac4bf06c NC |
13000 | continue; |
13001 | } | |
a8e14f4c NC |
13002 | |
13003 | hdr->contents = bfd_alloc (abfd, hdr->sh_size); | |
13004 | if (hdr->contents == NULL) | |
13005 | continue; | |
13006 | ||
13007 | #if DEBUG_SECONDARY_RELOCS | |
13008 | fprintf (stderr, "write %u secondary relocs for %s from %s\n", | |
13009 | reloc_count, sec->name, relsec->name); | |
13010 | #endif | |
13011 | last_sym = NULL; | |
13012 | last_sym_idx = 0; | |
13013 | dst_rela = hdr->contents; | |
13014 | src_irel = (arelent *) esd->sec_info; | |
ac4bf06c NC |
13015 | if (src_irel == NULL) |
13016 | { | |
13017 | _bfd_error_handler | |
13018 | /* xgettext:c-format */ | |
13019 | (_("%pB(%pA): error: internal relocs missing for secondary reloc section"), | |
13020 | abfd, relsec); | |
13021 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 13022 | result = false; |
ac4bf06c NC |
13023 | continue; |
13024 | } | |
a8e14f4c | 13025 | |
8ee54925 | 13026 | for (idx = 0; idx < reloc_count; idx++, dst_rela += entsize) |
a8e14f4c NC |
13027 | { |
13028 | Elf_Internal_Rela src_rela; | |
13029 | arelent *ptr; | |
13030 | asymbol *sym; | |
13031 | int n; | |
13032 | ||
13033 | ptr = src_irel + idx; | |
ac4bf06c NC |
13034 | if (ptr == NULL) |
13035 | { | |
13036 | _bfd_error_handler | |
13037 | /* xgettext:c-format */ | |
13038 | (_("%pB(%pA): error: reloc table entry %u is empty"), | |
13039 | abfd, relsec, idx); | |
13040 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 13041 | result = false; |
ac4bf06c NC |
13042 | break; |
13043 | } | |
a8e14f4c | 13044 | |
ac4bf06c NC |
13045 | if (ptr->sym_ptr_ptr == NULL) |
13046 | { | |
13047 | /* FIXME: Is this an error ? */ | |
13048 | n = 0; | |
13049 | } | |
a8e14f4c NC |
13050 | else |
13051 | { | |
ac4bf06c NC |
13052 | sym = *ptr->sym_ptr_ptr; |
13053 | ||
13054 | if (sym == last_sym) | |
13055 | n = last_sym_idx; | |
13056 | else | |
a8e14f4c | 13057 | { |
ac4bf06c NC |
13058 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, & sym); |
13059 | if (n < 0) | |
13060 | { | |
13061 | _bfd_error_handler | |
13062 | /* xgettext:c-format */ | |
13063 | (_("%pB(%pA): error: secondary reloc %u references a missing symbol"), | |
13064 | abfd, relsec, idx); | |
13065 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 13066 | result = false; |
ac4bf06c NC |
13067 | n = 0; |
13068 | } | |
13069 | ||
13070 | last_sym = sym; | |
13071 | last_sym_idx = n; | |
a8e14f4c | 13072 | } |
a8e14f4c | 13073 | |
ac4bf06c NC |
13074 | if (sym->the_bfd != NULL |
13075 | && sym->the_bfd->xvec != abfd->xvec | |
13076 | && ! _bfd_elf_validate_reloc (abfd, ptr)) | |
13077 | { | |
13078 | _bfd_error_handler | |
13079 | /* xgettext:c-format */ | |
13080 | (_("%pB(%pA): error: secondary reloc %u references a deleted symbol"), | |
13081 | abfd, relsec, idx); | |
13082 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 13083 | result = false; |
ac4bf06c NC |
13084 | n = 0; |
13085 | } | |
a8e14f4c NC |
13086 | } |
13087 | ||
ac4bf06c | 13088 | src_rela.r_offset = ptr->address + addr_offset; |
a8e14f4c NC |
13089 | if (ptr->howto == NULL) |
13090 | { | |
ac4bf06c NC |
13091 | _bfd_error_handler |
13092 | /* xgettext:c-format */ | |
13093 | (_("%pB(%pA): error: secondary reloc %u is of an unknown type"), | |
13094 | abfd, relsec, idx); | |
13095 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 13096 | result = false; |
ac4bf06c | 13097 | src_rela.r_info = r_info (0, 0); |
a8e14f4c | 13098 | } |
ac4bf06c NC |
13099 | else |
13100 | src_rela.r_info = r_info (n, ptr->howto->type); | |
a8e14f4c | 13101 | src_rela.r_addend = ptr->addend; |
8ee54925 NC |
13102 | |
13103 | if (entsize == ebd->s->sizeof_rel) | |
13104 | ebd->s->swap_reloc_out (abfd, &src_rela, dst_rela); | |
13105 | else /* entsize == ebd->s->sizeof_rela */ | |
13106 | ebd->s->swap_reloca_out (abfd, &src_rela, dst_rela); | |
a8e14f4c NC |
13107 | } |
13108 | } | |
13109 | } | |
13110 | ||
ac4bf06c | 13111 | return result; |
a8e14f4c | 13112 | } |