Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 AC |
2 | |
3 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, | |
415f38a6 | 4 | 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
72a80a16 | 5 | Free Software Foundation, Inc. |
252b5132 | 6 | |
5e8d7549 | 7 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 8 | |
5e8d7549 NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
5e8d7549 | 12 | (at your option) any later version. |
252b5132 | 13 | |
5e8d7549 NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
252b5132 | 18 | |
5e8d7549 | 19 | You should have received a copy of the GNU General Public License |
b34976b6 | 20 | along with this program; if not, write to the Free Software |
cd123cb7 NC |
21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
22 | MA 02110-1301, USA. */ | |
23 | ||
252b5132 | 24 | |
1b74d094 BW |
25 | /* |
26 | SECTION | |
252b5132 RH |
27 | ELF backends |
28 | ||
29 | BFD support for ELF formats is being worked on. | |
30 | Currently, the best supported back ends are for sparc and i386 | |
31 | (running svr4 or Solaris 2). | |
32 | ||
33 | Documentation of the internals of the support code still needs | |
34 | to be written. The code is changing quickly enough that we | |
661a3fd4 | 35 | haven't bothered yet. */ |
252b5132 | 36 | |
7ee38065 MS |
37 | /* For sparc64-cross-sparc32. */ |
38 | #define _SYSCALL32 | |
252b5132 | 39 | #include "sysdep.h" |
3db64b00 | 40 | #include "bfd.h" |
252b5132 RH |
41 | #include "bfdlink.h" |
42 | #include "libbfd.h" | |
43 | #define ARCH_SIZE 0 | |
44 | #include "elf-bfd.h" | |
e0e8c97f | 45 | #include "libiberty.h" |
ff59fc36 | 46 | #include "safe-ctype.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 *); |
c84fca4d | 53 | static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *); |
217aa764 AM |
54 | static bfd_boolean prep_headers (bfd *); |
55 | static bfd_boolean swap_out_syms (bfd *, struct bfd_strtab_hash **, int) ; | |
718175fa JK |
56 | static bfd_boolean elf_read_notes (bfd *, file_ptr, bfd_size_type) ; |
57 | static bfd_boolean elf_parse_notes (bfd *abfd, char *buf, size_t size, | |
58 | file_ptr offset); | |
50b2bdb7 | 59 | |
252b5132 RH |
60 | /* Swap version information in and out. The version information is |
61 | currently size independent. If that ever changes, this code will | |
62 | need to move into elfcode.h. */ | |
63 | ||
64 | /* Swap in a Verdef structure. */ | |
65 | ||
66 | void | |
217aa764 AM |
67 | _bfd_elf_swap_verdef_in (bfd *abfd, |
68 | const Elf_External_Verdef *src, | |
69 | Elf_Internal_Verdef *dst) | |
252b5132 | 70 | { |
dc810e39 AM |
71 | dst->vd_version = H_GET_16 (abfd, src->vd_version); |
72 | dst->vd_flags = H_GET_16 (abfd, src->vd_flags); | |
73 | dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx); | |
74 | dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt); | |
75 | dst->vd_hash = H_GET_32 (abfd, src->vd_hash); | |
76 | dst->vd_aux = H_GET_32 (abfd, src->vd_aux); | |
77 | dst->vd_next = H_GET_32 (abfd, src->vd_next); | |
252b5132 RH |
78 | } |
79 | ||
80 | /* Swap out a Verdef structure. */ | |
81 | ||
82 | void | |
217aa764 AM |
83 | _bfd_elf_swap_verdef_out (bfd *abfd, |
84 | const Elf_Internal_Verdef *src, | |
85 | Elf_External_Verdef *dst) | |
252b5132 | 86 | { |
dc810e39 AM |
87 | H_PUT_16 (abfd, src->vd_version, dst->vd_version); |
88 | H_PUT_16 (abfd, src->vd_flags, dst->vd_flags); | |
89 | H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx); | |
90 | H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt); | |
91 | H_PUT_32 (abfd, src->vd_hash, dst->vd_hash); | |
92 | H_PUT_32 (abfd, src->vd_aux, dst->vd_aux); | |
93 | H_PUT_32 (abfd, src->vd_next, dst->vd_next); | |
252b5132 RH |
94 | } |
95 | ||
96 | /* Swap in a Verdaux structure. */ | |
97 | ||
98 | void | |
217aa764 AM |
99 | _bfd_elf_swap_verdaux_in (bfd *abfd, |
100 | const Elf_External_Verdaux *src, | |
101 | Elf_Internal_Verdaux *dst) | |
252b5132 | 102 | { |
dc810e39 AM |
103 | dst->vda_name = H_GET_32 (abfd, src->vda_name); |
104 | dst->vda_next = H_GET_32 (abfd, src->vda_next); | |
252b5132 RH |
105 | } |
106 | ||
107 | /* Swap out a Verdaux structure. */ | |
108 | ||
109 | void | |
217aa764 AM |
110 | _bfd_elf_swap_verdaux_out (bfd *abfd, |
111 | const Elf_Internal_Verdaux *src, | |
112 | Elf_External_Verdaux *dst) | |
252b5132 | 113 | { |
dc810e39 AM |
114 | H_PUT_32 (abfd, src->vda_name, dst->vda_name); |
115 | H_PUT_32 (abfd, src->vda_next, dst->vda_next); | |
252b5132 RH |
116 | } |
117 | ||
118 | /* Swap in a Verneed structure. */ | |
119 | ||
120 | void | |
217aa764 AM |
121 | _bfd_elf_swap_verneed_in (bfd *abfd, |
122 | const Elf_External_Verneed *src, | |
123 | Elf_Internal_Verneed *dst) | |
252b5132 | 124 | { |
dc810e39 AM |
125 | dst->vn_version = H_GET_16 (abfd, src->vn_version); |
126 | dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt); | |
127 | dst->vn_file = H_GET_32 (abfd, src->vn_file); | |
128 | dst->vn_aux = H_GET_32 (abfd, src->vn_aux); | |
129 | dst->vn_next = H_GET_32 (abfd, src->vn_next); | |
252b5132 RH |
130 | } |
131 | ||
132 | /* Swap out a Verneed structure. */ | |
133 | ||
134 | void | |
217aa764 AM |
135 | _bfd_elf_swap_verneed_out (bfd *abfd, |
136 | const Elf_Internal_Verneed *src, | |
137 | Elf_External_Verneed *dst) | |
252b5132 | 138 | { |
dc810e39 AM |
139 | H_PUT_16 (abfd, src->vn_version, dst->vn_version); |
140 | H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt); | |
141 | H_PUT_32 (abfd, src->vn_file, dst->vn_file); | |
142 | H_PUT_32 (abfd, src->vn_aux, dst->vn_aux); | |
143 | H_PUT_32 (abfd, src->vn_next, dst->vn_next); | |
252b5132 RH |
144 | } |
145 | ||
146 | /* Swap in a Vernaux structure. */ | |
147 | ||
148 | void | |
217aa764 AM |
149 | _bfd_elf_swap_vernaux_in (bfd *abfd, |
150 | const Elf_External_Vernaux *src, | |
151 | Elf_Internal_Vernaux *dst) | |
252b5132 | 152 | { |
dc810e39 AM |
153 | dst->vna_hash = H_GET_32 (abfd, src->vna_hash); |
154 | dst->vna_flags = H_GET_16 (abfd, src->vna_flags); | |
155 | dst->vna_other = H_GET_16 (abfd, src->vna_other); | |
156 | dst->vna_name = H_GET_32 (abfd, src->vna_name); | |
157 | dst->vna_next = H_GET_32 (abfd, src->vna_next); | |
252b5132 RH |
158 | } |
159 | ||
160 | /* Swap out a Vernaux structure. */ | |
161 | ||
162 | void | |
217aa764 AM |
163 | _bfd_elf_swap_vernaux_out (bfd *abfd, |
164 | const Elf_Internal_Vernaux *src, | |
165 | Elf_External_Vernaux *dst) | |
252b5132 | 166 | { |
dc810e39 AM |
167 | H_PUT_32 (abfd, src->vna_hash, dst->vna_hash); |
168 | H_PUT_16 (abfd, src->vna_flags, dst->vna_flags); | |
169 | H_PUT_16 (abfd, src->vna_other, dst->vna_other); | |
170 | H_PUT_32 (abfd, src->vna_name, dst->vna_name); | |
171 | H_PUT_32 (abfd, src->vna_next, dst->vna_next); | |
252b5132 RH |
172 | } |
173 | ||
174 | /* Swap in a Versym structure. */ | |
175 | ||
176 | void | |
217aa764 AM |
177 | _bfd_elf_swap_versym_in (bfd *abfd, |
178 | const Elf_External_Versym *src, | |
179 | Elf_Internal_Versym *dst) | |
252b5132 | 180 | { |
dc810e39 | 181 | dst->vs_vers = H_GET_16 (abfd, src->vs_vers); |
252b5132 RH |
182 | } |
183 | ||
184 | /* Swap out a Versym structure. */ | |
185 | ||
186 | void | |
217aa764 AM |
187 | _bfd_elf_swap_versym_out (bfd *abfd, |
188 | const Elf_Internal_Versym *src, | |
189 | Elf_External_Versym *dst) | |
252b5132 | 190 | { |
dc810e39 | 191 | H_PUT_16 (abfd, src->vs_vers, dst->vs_vers); |
252b5132 RH |
192 | } |
193 | ||
194 | /* Standard ELF hash function. Do not change this function; you will | |
195 | cause invalid hash tables to be generated. */ | |
3a99b017 | 196 | |
252b5132 | 197 | unsigned long |
217aa764 | 198 | bfd_elf_hash (const char *namearg) |
252b5132 | 199 | { |
3a99b017 | 200 | const unsigned char *name = (const unsigned char *) namearg; |
252b5132 RH |
201 | unsigned long h = 0; |
202 | unsigned long g; | |
203 | int ch; | |
204 | ||
205 | while ((ch = *name++) != '\0') | |
206 | { | |
207 | h = (h << 4) + ch; | |
208 | if ((g = (h & 0xf0000000)) != 0) | |
209 | { | |
210 | h ^= g >> 24; | |
211 | /* The ELF ABI says `h &= ~g', but this is equivalent in | |
212 | this case and on some machines one insn instead of two. */ | |
213 | h ^= g; | |
214 | } | |
215 | } | |
32dfa85d | 216 | return h & 0xffffffff; |
252b5132 RH |
217 | } |
218 | ||
fdc90cb4 JJ |
219 | /* DT_GNU_HASH hash function. Do not change this function; you will |
220 | cause invalid hash tables to be generated. */ | |
221 | ||
222 | unsigned long | |
223 | bfd_elf_gnu_hash (const char *namearg) | |
224 | { | |
225 | const unsigned char *name = (const unsigned char *) namearg; | |
226 | unsigned long h = 5381; | |
227 | unsigned char ch; | |
228 | ||
229 | while ((ch = *name++) != '\0') | |
230 | h = (h << 5) + h + ch; | |
231 | return h & 0xffffffff; | |
232 | } | |
233 | ||
0c8d6e5c AM |
234 | /* Create a tdata field OBJECT_SIZE bytes in length, zeroed out and with |
235 | the object_id field of an elf_obj_tdata field set to OBJECT_ID. */ | |
b34976b6 | 236 | bfd_boolean |
0c8d6e5c | 237 | bfd_elf_allocate_object (bfd *abfd, |
0ffa91dd | 238 | size_t object_size, |
4dfe6ac6 | 239 | enum elf_target_id object_id) |
252b5132 | 240 | { |
0ffa91dd NC |
241 | BFD_ASSERT (object_size >= sizeof (struct elf_obj_tdata)); |
242 | abfd->tdata.any = bfd_zalloc (abfd, object_size); | |
243 | if (abfd->tdata.any == NULL) | |
244 | return FALSE; | |
252b5132 | 245 | |
0ffa91dd NC |
246 | elf_object_id (abfd) = object_id; |
247 | elf_program_header_size (abfd) = (bfd_size_type) -1; | |
b34976b6 | 248 | return TRUE; |
252b5132 RH |
249 | } |
250 | ||
0ffa91dd NC |
251 | |
252 | bfd_boolean | |
ae95ffa6 | 253 | bfd_elf_make_object (bfd *abfd) |
0ffa91dd | 254 | { |
ae95ffa6 | 255 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
0ffa91dd | 256 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_obj_tdata), |
ae95ffa6 | 257 | bed->target_id); |
0ffa91dd NC |
258 | } |
259 | ||
b34976b6 | 260 | bfd_boolean |
217aa764 | 261 | bfd_elf_mkcorefile (bfd *abfd) |
252b5132 | 262 | { |
c044fabd | 263 | /* I think this can be done just like an object file. */ |
ae95ffa6 | 264 | return abfd->xvec->_bfd_set_format[(int) bfd_object] (abfd); |
252b5132 RH |
265 | } |
266 | ||
72a80a16 | 267 | static char * |
217aa764 | 268 | bfd_elf_get_str_section (bfd *abfd, unsigned int shindex) |
252b5132 RH |
269 | { |
270 | Elf_Internal_Shdr **i_shdrp; | |
f075ee0c | 271 | bfd_byte *shstrtab = NULL; |
dc810e39 AM |
272 | file_ptr offset; |
273 | bfd_size_type shstrtabsize; | |
252b5132 RH |
274 | |
275 | i_shdrp = elf_elfsections (abfd); | |
74f2e02b AM |
276 | if (i_shdrp == 0 |
277 | || shindex >= elf_numsections (abfd) | |
278 | || i_shdrp[shindex] == 0) | |
f075ee0c | 279 | return NULL; |
252b5132 | 280 | |
f075ee0c | 281 | shstrtab = i_shdrp[shindex]->contents; |
252b5132 RH |
282 | if (shstrtab == NULL) |
283 | { | |
c044fabd | 284 | /* No cached one, attempt to read, and cache what we read. */ |
252b5132 RH |
285 | offset = i_shdrp[shindex]->sh_offset; |
286 | shstrtabsize = i_shdrp[shindex]->sh_size; | |
c6c60d09 JJ |
287 | |
288 | /* Allocate and clear an extra byte at the end, to prevent crashes | |
289 | in case the string table is not terminated. */ | |
3471d59d | 290 | if (shstrtabsize + 1 <= 1 |
a50b1753 | 291 | || (shstrtab = (bfd_byte *) bfd_alloc (abfd, shstrtabsize + 1)) == NULL |
c6c60d09 JJ |
292 | || bfd_seek (abfd, offset, SEEK_SET) != 0) |
293 | shstrtab = NULL; | |
294 | else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize) | |
295 | { | |
296 | if (bfd_get_error () != bfd_error_system_call) | |
297 | bfd_set_error (bfd_error_file_truncated); | |
298 | shstrtab = NULL; | |
3471d59d CC |
299 | /* Once we've failed to read it, make sure we don't keep |
300 | trying. Otherwise, we'll keep allocating space for | |
301 | the string table over and over. */ | |
302 | i_shdrp[shindex]->sh_size = 0; | |
c6c60d09 JJ |
303 | } |
304 | else | |
305 | shstrtab[shstrtabsize] = '\0'; | |
217aa764 | 306 | i_shdrp[shindex]->contents = shstrtab; |
252b5132 | 307 | } |
f075ee0c | 308 | return (char *) shstrtab; |
252b5132 RH |
309 | } |
310 | ||
311 | char * | |
217aa764 AM |
312 | bfd_elf_string_from_elf_section (bfd *abfd, |
313 | unsigned int shindex, | |
314 | unsigned int strindex) | |
252b5132 RH |
315 | { |
316 | Elf_Internal_Shdr *hdr; | |
317 | ||
318 | if (strindex == 0) | |
319 | return ""; | |
320 | ||
74f2e02b AM |
321 | if (elf_elfsections (abfd) == NULL || shindex >= elf_numsections (abfd)) |
322 | return NULL; | |
323 | ||
252b5132 RH |
324 | hdr = elf_elfsections (abfd)[shindex]; |
325 | ||
326 | if (hdr->contents == NULL | |
327 | && bfd_elf_get_str_section (abfd, shindex) == NULL) | |
328 | return NULL; | |
329 | ||
330 | if (strindex >= hdr->sh_size) | |
331 | { | |
1b3a8575 | 332 | unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx; |
252b5132 | 333 | (*_bfd_error_handler) |
d003868e AM |
334 | (_("%B: invalid string offset %u >= %lu for section `%s'"), |
335 | abfd, strindex, (unsigned long) hdr->sh_size, | |
1b3a8575 | 336 | (shindex == shstrndx && strindex == hdr->sh_name |
252b5132 | 337 | ? ".shstrtab" |
1b3a8575 | 338 | : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name))); |
45b222d6 | 339 | return NULL; |
252b5132 RH |
340 | } |
341 | ||
342 | return ((char *) hdr->contents) + strindex; | |
343 | } | |
344 | ||
6cdc0ccc AM |
345 | /* Read and convert symbols to internal format. |
346 | SYMCOUNT specifies the number of symbols to read, starting from | |
347 | symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF | |
348 | are non-NULL, they are used to store the internal symbols, external | |
b7c368d0 NC |
349 | symbols, and symbol section index extensions, respectively. |
350 | Returns a pointer to the internal symbol buffer (malloced if necessary) | |
351 | or NULL if there were no symbols or some kind of problem. */ | |
6cdc0ccc AM |
352 | |
353 | Elf_Internal_Sym * | |
217aa764 AM |
354 | bfd_elf_get_elf_syms (bfd *ibfd, |
355 | Elf_Internal_Shdr *symtab_hdr, | |
356 | size_t symcount, | |
357 | size_t symoffset, | |
358 | Elf_Internal_Sym *intsym_buf, | |
359 | void *extsym_buf, | |
360 | Elf_External_Sym_Shndx *extshndx_buf) | |
6cdc0ccc AM |
361 | { |
362 | Elf_Internal_Shdr *shndx_hdr; | |
217aa764 | 363 | void *alloc_ext; |
df622259 | 364 | const bfd_byte *esym; |
6cdc0ccc AM |
365 | Elf_External_Sym_Shndx *alloc_extshndx; |
366 | Elf_External_Sym_Shndx *shndx; | |
4dd07732 | 367 | Elf_Internal_Sym *alloc_intsym; |
6cdc0ccc AM |
368 | Elf_Internal_Sym *isym; |
369 | Elf_Internal_Sym *isymend; | |
9c5bfbb7 | 370 | const struct elf_backend_data *bed; |
6cdc0ccc AM |
371 | size_t extsym_size; |
372 | bfd_size_type amt; | |
373 | file_ptr pos; | |
374 | ||
e44a2c9c AM |
375 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
376 | abort (); | |
377 | ||
6cdc0ccc AM |
378 | if (symcount == 0) |
379 | return intsym_buf; | |
380 | ||
381 | /* Normal syms might have section extension entries. */ | |
382 | shndx_hdr = NULL; | |
383 | if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr) | |
384 | shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr; | |
385 | ||
386 | /* Read the symbols. */ | |
387 | alloc_ext = NULL; | |
388 | alloc_extshndx = NULL; | |
4dd07732 | 389 | alloc_intsym = NULL; |
6cdc0ccc AM |
390 | bed = get_elf_backend_data (ibfd); |
391 | extsym_size = bed->s->sizeof_sym; | |
392 | amt = symcount * extsym_size; | |
393 | pos = symtab_hdr->sh_offset + symoffset * extsym_size; | |
394 | if (extsym_buf == NULL) | |
395 | { | |
d0fb9a8d | 396 | alloc_ext = bfd_malloc2 (symcount, extsym_size); |
6cdc0ccc AM |
397 | extsym_buf = alloc_ext; |
398 | } | |
399 | if (extsym_buf == NULL | |
400 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
401 | || bfd_bread (extsym_buf, amt, ibfd) != amt) | |
402 | { | |
403 | intsym_buf = NULL; | |
404 | goto out; | |
405 | } | |
406 | ||
407 | if (shndx_hdr == NULL || shndx_hdr->sh_size == 0) | |
408 | extshndx_buf = NULL; | |
409 | else | |
410 | { | |
411 | amt = symcount * sizeof (Elf_External_Sym_Shndx); | |
412 | pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx); | |
413 | if (extshndx_buf == NULL) | |
414 | { | |
a50b1753 NC |
415 | alloc_extshndx = (Elf_External_Sym_Shndx *) |
416 | bfd_malloc2 (symcount, sizeof (Elf_External_Sym_Shndx)); | |
6cdc0ccc AM |
417 | extshndx_buf = alloc_extshndx; |
418 | } | |
419 | if (extshndx_buf == NULL | |
420 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
421 | || bfd_bread (extshndx_buf, amt, ibfd) != amt) | |
422 | { | |
423 | intsym_buf = NULL; | |
424 | goto out; | |
425 | } | |
426 | } | |
427 | ||
428 | if (intsym_buf == NULL) | |
429 | { | |
a50b1753 NC |
430 | alloc_intsym = (Elf_Internal_Sym *) |
431 | bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym)); | |
4dd07732 | 432 | intsym_buf = alloc_intsym; |
6cdc0ccc AM |
433 | if (intsym_buf == NULL) |
434 | goto out; | |
435 | } | |
436 | ||
437 | /* Convert the symbols to internal form. */ | |
438 | isymend = intsym_buf + symcount; | |
a50b1753 NC |
439 | for (esym = (const bfd_byte *) extsym_buf, isym = intsym_buf, |
440 | shndx = extshndx_buf; | |
6cdc0ccc AM |
441 | isym < isymend; |
442 | esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL) | |
8384fb8f AM |
443 | if (!(*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym)) |
444 | { | |
445 | symoffset += (esym - (bfd_byte *) extsym_buf) / extsym_size; | |
446 | (*_bfd_error_handler) (_("%B symbol number %lu references " | |
447 | "nonexistent SHT_SYMTAB_SHNDX section"), | |
448 | ibfd, (unsigned long) symoffset); | |
4dd07732 AM |
449 | if (alloc_intsym != NULL) |
450 | free (alloc_intsym); | |
8384fb8f AM |
451 | intsym_buf = NULL; |
452 | goto out; | |
453 | } | |
6cdc0ccc AM |
454 | |
455 | out: | |
456 | if (alloc_ext != NULL) | |
457 | free (alloc_ext); | |
458 | if (alloc_extshndx != NULL) | |
459 | free (alloc_extshndx); | |
460 | ||
461 | return intsym_buf; | |
462 | } | |
463 | ||
5cab59f6 AM |
464 | /* Look up a symbol name. */ |
465 | const char * | |
be8dd2ca AM |
466 | bfd_elf_sym_name (bfd *abfd, |
467 | Elf_Internal_Shdr *symtab_hdr, | |
26c61ae5 L |
468 | Elf_Internal_Sym *isym, |
469 | asection *sym_sec) | |
5cab59f6 | 470 | { |
26c61ae5 | 471 | const char *name; |
5cab59f6 | 472 | unsigned int iname = isym->st_name; |
be8dd2ca | 473 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 474 | |
138f35cc JJ |
475 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
476 | /* Check for a bogus st_shndx to avoid crashing. */ | |
4fbb74a6 | 477 | && isym->st_shndx < elf_numsections (abfd)) |
5cab59f6 AM |
478 | { |
479 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
480 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
481 | } | |
482 | ||
26c61ae5 L |
483 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
484 | if (name == NULL) | |
485 | name = "(null)"; | |
486 | else if (sym_sec && *name == '\0') | |
487 | name = bfd_section_name (abfd, sym_sec); | |
488 | ||
489 | return name; | |
5cab59f6 AM |
490 | } |
491 | ||
dbb410c3 AM |
492 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
493 | sections. The first element is the flags, the rest are section | |
494 | pointers. */ | |
495 | ||
496 | typedef union elf_internal_group { | |
497 | Elf_Internal_Shdr *shdr; | |
498 | unsigned int flags; | |
499 | } Elf_Internal_Group; | |
500 | ||
b885599b AM |
501 | /* Return the name of the group signature symbol. Why isn't the |
502 | signature just a string? */ | |
503 | ||
504 | static const char * | |
217aa764 | 505 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 506 | { |
9dce4196 | 507 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
508 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
509 | Elf_External_Sym_Shndx eshndx; | |
510 | Elf_Internal_Sym isym; | |
b885599b | 511 | |
13792e9d L |
512 | /* First we need to ensure the symbol table is available. Make sure |
513 | that it is a symbol table section. */ | |
4fbb74a6 AM |
514 | if (ghdr->sh_link >= elf_numsections (abfd)) |
515 | return NULL; | |
13792e9d L |
516 | hdr = elf_elfsections (abfd) [ghdr->sh_link]; |
517 | if (hdr->sh_type != SHT_SYMTAB | |
518 | || ! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
b885599b AM |
519 | return NULL; |
520 | ||
9dce4196 AM |
521 | /* Go read the symbol. */ |
522 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
523 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
524 | &isym, esym, &eshndx) == NULL) | |
b885599b | 525 | return NULL; |
9dce4196 | 526 | |
26c61ae5 | 527 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
528 | } |
529 | ||
dbb410c3 AM |
530 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
531 | ||
b34976b6 | 532 | static bfd_boolean |
217aa764 | 533 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
534 | { |
535 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
536 | ||
537 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
538 | is set to -1 if there are no SHT_GROUP sections. */ | |
539 | if (num_group == 0) | |
540 | { | |
541 | unsigned int i, shnum; | |
542 | ||
543 | /* First count the number of groups. If we have a SHT_GROUP | |
544 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 545 | shnum = elf_numsections (abfd); |
dbb410c3 | 546 | num_group = 0; |
08a40648 | 547 | |
1783205a NC |
548 | #define IS_VALID_GROUP_SECTION_HEADER(shdr) \ |
549 | ( (shdr)->sh_type == SHT_GROUP \ | |
550 | && (shdr)->sh_size >= (2 * GRP_ENTRY_SIZE) \ | |
551 | && (shdr)->sh_entsize == GRP_ENTRY_SIZE \ | |
552 | && ((shdr)->sh_size % GRP_ENTRY_SIZE) == 0) | |
08a40648 | 553 | |
dbb410c3 AM |
554 | for (i = 0; i < shnum; i++) |
555 | { | |
556 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a NC |
557 | |
558 | if (IS_VALID_GROUP_SECTION_HEADER (shdr)) | |
dbb410c3 AM |
559 | num_group += 1; |
560 | } | |
561 | ||
562 | if (num_group == 0) | |
20dbb49d L |
563 | { |
564 | num_group = (unsigned) -1; | |
565 | elf_tdata (abfd)->num_group = num_group; | |
566 | } | |
567 | else | |
dbb410c3 AM |
568 | { |
569 | /* We keep a list of elf section headers for group sections, | |
570 | so we can find them quickly. */ | |
20dbb49d | 571 | bfd_size_type amt; |
d0fb9a8d | 572 | |
20dbb49d | 573 | elf_tdata (abfd)->num_group = num_group; |
a50b1753 NC |
574 | elf_tdata (abfd)->group_sect_ptr = (Elf_Internal_Shdr **) |
575 | bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *)); | |
dbb410c3 | 576 | if (elf_tdata (abfd)->group_sect_ptr == NULL) |
b34976b6 | 577 | return FALSE; |
dbb410c3 AM |
578 | |
579 | num_group = 0; | |
580 | for (i = 0; i < shnum; i++) | |
581 | { | |
582 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a NC |
583 | |
584 | if (IS_VALID_GROUP_SECTION_HEADER (shdr)) | |
dbb410c3 | 585 | { |
973ffd63 | 586 | unsigned char *src; |
dbb410c3 AM |
587 | Elf_Internal_Group *dest; |
588 | ||
589 | /* Add to list of sections. */ | |
590 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
591 | num_group += 1; | |
592 | ||
593 | /* Read the raw contents. */ | |
594 | BFD_ASSERT (sizeof (*dest) >= 4); | |
595 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
a50b1753 NC |
596 | shdr->contents = (unsigned char *) |
597 | bfd_alloc2 (abfd, shdr->sh_size, sizeof (*dest) / 4); | |
1783205a NC |
598 | /* PR binutils/4110: Handle corrupt group headers. */ |
599 | if (shdr->contents == NULL) | |
600 | { | |
601 | _bfd_error_handler | |
602 | (_("%B: Corrupt size field in group section header: 0x%lx"), abfd, shdr->sh_size); | |
603 | bfd_set_error (bfd_error_bad_value); | |
604 | return FALSE; | |
605 | } | |
606 | ||
607 | memset (shdr->contents, 0, amt); | |
608 | ||
609 | if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
dbb410c3 AM |
610 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) |
611 | != shdr->sh_size)) | |
b34976b6 | 612 | return FALSE; |
dbb410c3 AM |
613 | |
614 | /* Translate raw contents, a flag word followed by an | |
615 | array of elf section indices all in target byte order, | |
616 | to the flag word followed by an array of elf section | |
617 | pointers. */ | |
618 | src = shdr->contents + shdr->sh_size; | |
619 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
620 | while (1) | |
621 | { | |
622 | unsigned int idx; | |
623 | ||
624 | src -= 4; | |
625 | --dest; | |
626 | idx = H_GET_32 (abfd, src); | |
627 | if (src == shdr->contents) | |
628 | { | |
629 | dest->flags = idx; | |
b885599b AM |
630 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
631 | shdr->bfd_section->flags | |
632 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
633 | break; |
634 | } | |
635 | if (idx >= shnum) | |
636 | { | |
637 | ((*_bfd_error_handler) | |
d003868e | 638 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
639 | idx = 0; |
640 | } | |
641 | dest->shdr = elf_elfsections (abfd)[idx]; | |
642 | } | |
643 | } | |
644 | } | |
645 | } | |
646 | } | |
647 | ||
648 | if (num_group != (unsigned) -1) | |
649 | { | |
650 | unsigned int i; | |
651 | ||
652 | for (i = 0; i < num_group; i++) | |
653 | { | |
654 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
655 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
656 | unsigned int n_elt = shdr->sh_size / 4; | |
657 | ||
658 | /* Look through this group's sections to see if current | |
659 | section is a member. */ | |
660 | while (--n_elt != 0) | |
661 | if ((++idx)->shdr == hdr) | |
662 | { | |
e0e8c97f | 663 | asection *s = NULL; |
dbb410c3 AM |
664 | |
665 | /* We are a member of this group. Go looking through | |
666 | other members to see if any others are linked via | |
667 | next_in_group. */ | |
668 | idx = (Elf_Internal_Group *) shdr->contents; | |
669 | n_elt = shdr->sh_size / 4; | |
670 | while (--n_elt != 0) | |
671 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 672 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
673 | break; |
674 | if (n_elt != 0) | |
675 | { | |
dbb410c3 AM |
676 | /* Snarf the group name from other member, and |
677 | insert current section in circular list. */ | |
945906ff AM |
678 | elf_group_name (newsect) = elf_group_name (s); |
679 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
680 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
681 | } |
682 | else | |
683 | { | |
dbb410c3 AM |
684 | const char *gname; |
685 | ||
b885599b AM |
686 | gname = group_signature (abfd, shdr); |
687 | if (gname == NULL) | |
b34976b6 | 688 | return FALSE; |
945906ff | 689 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
690 | |
691 | /* Start a circular list with one element. */ | |
945906ff | 692 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 693 | } |
b885599b | 694 | |
9dce4196 AM |
695 | /* If the group section has been created, point to the |
696 | new member. */ | |
dbb410c3 | 697 | if (shdr->bfd_section != NULL) |
945906ff | 698 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 699 | |
dbb410c3 AM |
700 | i = num_group - 1; |
701 | break; | |
702 | } | |
703 | } | |
704 | } | |
705 | ||
945906ff | 706 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 707 | { |
d003868e AM |
708 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
709 | abfd, newsect); | |
dbb410c3 | 710 | } |
b34976b6 | 711 | return TRUE; |
dbb410c3 AM |
712 | } |
713 | ||
3d7f7666 | 714 | bfd_boolean |
dd863624 | 715 | _bfd_elf_setup_sections (bfd *abfd) |
3d7f7666 L |
716 | { |
717 | unsigned int i; | |
718 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
719 | bfd_boolean result = TRUE; | |
dd863624 L |
720 | asection *s; |
721 | ||
722 | /* Process SHF_LINK_ORDER. */ | |
723 | for (s = abfd->sections; s != NULL; s = s->next) | |
724 | { | |
725 | Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr; | |
726 | if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0) | |
727 | { | |
728 | unsigned int elfsec = this_hdr->sh_link; | |
729 | /* FIXME: The old Intel compiler and old strip/objcopy may | |
730 | not set the sh_link or sh_info fields. Hence we could | |
731 | get the situation where elfsec is 0. */ | |
732 | if (elfsec == 0) | |
733 | { | |
4fbb74a6 | 734 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dd863624 L |
735 | if (bed->link_order_error_handler) |
736 | bed->link_order_error_handler | |
737 | (_("%B: warning: sh_link not set for section `%A'"), | |
738 | abfd, s); | |
739 | } | |
740 | else | |
741 | { | |
91d6fa6a | 742 | asection *linksec = NULL; |
25bbc984 | 743 | |
4fbb74a6 AM |
744 | if (elfsec < elf_numsections (abfd)) |
745 | { | |
746 | this_hdr = elf_elfsections (abfd)[elfsec]; | |
91d6fa6a | 747 | linksec = this_hdr->bfd_section; |
4fbb74a6 | 748 | } |
25bbc984 L |
749 | |
750 | /* PR 1991, 2008: | |
751 | Some strip/objcopy may leave an incorrect value in | |
752 | sh_link. We don't want to proceed. */ | |
91d6fa6a | 753 | if (linksec == NULL) |
25bbc984 L |
754 | { |
755 | (*_bfd_error_handler) | |
756 | (_("%B: sh_link [%d] in section `%A' is incorrect"), | |
757 | s->owner, s, elfsec); | |
758 | result = FALSE; | |
759 | } | |
760 | ||
91d6fa6a | 761 | elf_linked_to_section (s) = linksec; |
dd863624 L |
762 | } |
763 | } | |
764 | } | |
3d7f7666 | 765 | |
dd863624 | 766 | /* Process section groups. */ |
3d7f7666 L |
767 | if (num_group == (unsigned) -1) |
768 | return result; | |
769 | ||
770 | for (i = 0; i < num_group; i++) | |
771 | { | |
772 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
773 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
774 | unsigned int n_elt = shdr->sh_size / 4; | |
775 | ||
776 | while (--n_elt != 0) | |
777 | if ((++idx)->shdr->bfd_section) | |
778 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
779 | else if (idx->shdr->sh_type == SHT_RELA | |
780 | || idx->shdr->sh_type == SHT_REL) | |
781 | /* We won't include relocation sections in section groups in | |
782 | output object files. We adjust the group section size here | |
783 | so that relocatable link will work correctly when | |
784 | relocation sections are in section group in input object | |
785 | files. */ | |
786 | shdr->bfd_section->size -= 4; | |
787 | else | |
788 | { | |
789 | /* There are some unknown sections in the group. */ | |
790 | (*_bfd_error_handler) | |
d003868e AM |
791 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
792 | abfd, | |
3d7f7666 | 793 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
794 | bfd_elf_string_from_elf_section (abfd, |
795 | (elf_elfheader (abfd) | |
796 | ->e_shstrndx), | |
797 | idx->shdr->sh_name), | |
3d7f7666 L |
798 | shdr->bfd_section->name); |
799 | result = FALSE; | |
800 | } | |
801 | } | |
802 | return result; | |
803 | } | |
804 | ||
72adc230 AM |
805 | bfd_boolean |
806 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
807 | { | |
808 | return elf_next_in_group (sec) != NULL; | |
809 | } | |
810 | ||
252b5132 RH |
811 | /* Make a BFD section from an ELF section. We store a pointer to the |
812 | BFD section in the bfd_section field of the header. */ | |
813 | ||
b34976b6 | 814 | bfd_boolean |
217aa764 AM |
815 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
816 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
817 | const char *name, |
818 | int shindex) | |
252b5132 RH |
819 | { |
820 | asection *newsect; | |
821 | flagword flags; | |
9c5bfbb7 | 822 | const struct elf_backend_data *bed; |
252b5132 RH |
823 | |
824 | if (hdr->bfd_section != NULL) | |
4e011fb5 | 825 | return TRUE; |
252b5132 RH |
826 | |
827 | newsect = bfd_make_section_anyway (abfd, name); | |
828 | if (newsect == NULL) | |
b34976b6 | 829 | return FALSE; |
252b5132 | 830 | |
1829f4b2 AM |
831 | hdr->bfd_section = newsect; |
832 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 833 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 834 | |
2f89ff8d L |
835 | /* Always use the real type/flags. */ |
836 | elf_section_type (newsect) = hdr->sh_type; | |
837 | elf_section_flags (newsect) = hdr->sh_flags; | |
838 | ||
252b5132 RH |
839 | newsect->filepos = hdr->sh_offset; |
840 | ||
841 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
842 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
843 | || ! bfd_set_section_alignment (abfd, newsect, | |
72de5009 | 844 | bfd_log2 (hdr->sh_addralign))) |
b34976b6 | 845 | return FALSE; |
252b5132 RH |
846 | |
847 | flags = SEC_NO_FLAGS; | |
848 | if (hdr->sh_type != SHT_NOBITS) | |
849 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 850 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 851 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
852 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
853 | { | |
854 | flags |= SEC_ALLOC; | |
855 | if (hdr->sh_type != SHT_NOBITS) | |
856 | flags |= SEC_LOAD; | |
857 | } | |
858 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
859 | flags |= SEC_READONLY; | |
860 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
861 | flags |= SEC_CODE; | |
862 | else if ((flags & SEC_LOAD) != 0) | |
863 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
864 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
865 | { | |
866 | flags |= SEC_MERGE; | |
867 | newsect->entsize = hdr->sh_entsize; | |
868 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
869 | flags |= SEC_STRINGS; | |
870 | } | |
dbb410c3 AM |
871 | if (hdr->sh_flags & SHF_GROUP) |
872 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 873 | return FALSE; |
13ae64f3 JJ |
874 | if ((hdr->sh_flags & SHF_TLS) != 0) |
875 | flags |= SEC_THREAD_LOCAL; | |
18ae9cc1 L |
876 | if ((hdr->sh_flags & SHF_EXCLUDE) != 0) |
877 | flags |= SEC_EXCLUDE; | |
252b5132 | 878 | |
3d2b39cf | 879 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 880 | { |
3d2b39cf L |
881 | /* The debugging sections appear to be recognized only by name, |
882 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
883 | static const struct | |
884 | { | |
885 | const char *name; | |
886 | int len; | |
887 | } debug_sections [] = | |
888 | { | |
0112cd26 | 889 | { STRING_COMMA_LEN ("debug") }, /* 'd' */ |
3d2b39cf L |
890 | { NULL, 0 }, /* 'e' */ |
891 | { NULL, 0 }, /* 'f' */ | |
0112cd26 | 892 | { STRING_COMMA_LEN ("gnu.linkonce.wi.") }, /* 'g' */ |
3d2b39cf L |
893 | { NULL, 0 }, /* 'h' */ |
894 | { NULL, 0 }, /* 'i' */ | |
895 | { NULL, 0 }, /* 'j' */ | |
896 | { NULL, 0 }, /* 'k' */ | |
0112cd26 | 897 | { STRING_COMMA_LEN ("line") }, /* 'l' */ |
3d2b39cf L |
898 | { NULL, 0 }, /* 'm' */ |
899 | { NULL, 0 }, /* 'n' */ | |
900 | { NULL, 0 }, /* 'o' */ | |
901 | { NULL, 0 }, /* 'p' */ | |
902 | { NULL, 0 }, /* 'q' */ | |
903 | { NULL, 0 }, /* 'r' */ | |
1b315056 CS |
904 | { STRING_COMMA_LEN ("stab") }, /* 's' */ |
905 | { NULL, 0 }, /* 't' */ | |
906 | { NULL, 0 }, /* 'u' */ | |
907 | { NULL, 0 }, /* 'v' */ | |
908 | { NULL, 0 }, /* 'w' */ | |
909 | { NULL, 0 }, /* 'x' */ | |
910 | { NULL, 0 }, /* 'y' */ | |
911 | { STRING_COMMA_LEN ("zdebug") } /* 'z' */ | |
3d2b39cf | 912 | }; |
08a40648 | 913 | |
3d2b39cf L |
914 | if (name [0] == '.') |
915 | { | |
916 | int i = name [1] - 'd'; | |
917 | if (i >= 0 | |
918 | && i < (int) ARRAY_SIZE (debug_sections) | |
919 | && debug_sections [i].name != NULL | |
920 | && strncmp (&name [1], debug_sections [i].name, | |
921 | debug_sections [i].len) == 0) | |
922 | flags |= SEC_DEBUGGING; | |
923 | } | |
924 | } | |
252b5132 RH |
925 | |
926 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
927 | only link a single copy of the section. This is used to support | |
928 | g++. g++ will emit each template expansion in its own section. | |
929 | The symbols will be defined as weak, so that multiple definitions | |
930 | are permitted. The GNU linker extension is to actually discard | |
931 | all but one of the sections. */ | |
0112cd26 | 932 | if (CONST_STRNEQ (name, ".gnu.linkonce") |
b885599b | 933 | && elf_next_in_group (newsect) == NULL) |
252b5132 RH |
934 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
935 | ||
fa152c49 JW |
936 | bed = get_elf_backend_data (abfd); |
937 | if (bed->elf_backend_section_flags) | |
938 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 939 | return FALSE; |
fa152c49 | 940 | |
252b5132 | 941 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 942 | return FALSE; |
252b5132 | 943 | |
718175fa JK |
944 | /* We do not parse the PT_NOTE segments as we are interested even in the |
945 | separate debug info files which may have the segments offsets corrupted. | |
946 | PT_NOTEs from the core files are currently not parsed using BFD. */ | |
947 | if (hdr->sh_type == SHT_NOTE) | |
948 | { | |
baea7ef1 | 949 | bfd_byte *contents; |
718175fa | 950 | |
baea7ef1 | 951 | if (!bfd_malloc_and_get_section (abfd, newsect, &contents)) |
718175fa JK |
952 | return FALSE; |
953 | ||
baea7ef1 | 954 | elf_parse_notes (abfd, (char *) contents, hdr->sh_size, -1); |
718175fa JK |
955 | free (contents); |
956 | } | |
957 | ||
252b5132 RH |
958 | if ((flags & SEC_ALLOC) != 0) |
959 | { | |
960 | Elf_Internal_Phdr *phdr; | |
6ffd7900 AM |
961 | unsigned int i, nload; |
962 | ||
963 | /* Some ELF linkers produce binaries with all the program header | |
964 | p_paddr fields zero. If we have such a binary with more than | |
965 | one PT_LOAD header, then leave the section lma equal to vma | |
966 | so that we don't create sections with overlapping lma. */ | |
967 | phdr = elf_tdata (abfd)->phdr; | |
968 | for (nload = 0, i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
969 | if (phdr->p_paddr != 0) | |
970 | break; | |
971 | else if (phdr->p_type == PT_LOAD && phdr->p_memsz != 0) | |
972 | ++nload; | |
973 | if (i >= elf_elfheader (abfd)->e_phnum && nload > 1) | |
974 | return TRUE; | |
252b5132 | 975 | |
252b5132 RH |
976 | phdr = elf_tdata (abfd)->phdr; |
977 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
978 | { | |
88967714 | 979 | if (phdr->p_type == PT_LOAD |
9a83a553 | 980 | && ELF_SECTION_IN_SEGMENT (hdr, phdr)) |
252b5132 | 981 | { |
88967714 AM |
982 | if ((flags & SEC_LOAD) == 0) |
983 | newsect->lma = (phdr->p_paddr | |
984 | + hdr->sh_addr - phdr->p_vaddr); | |
985 | else | |
986 | /* We used to use the same adjustment for SEC_LOAD | |
987 | sections, but that doesn't work if the segment | |
988 | is packed with code from multiple VMAs. | |
989 | Instead we calculate the section LMA based on | |
990 | the segment LMA. It is assumed that the | |
991 | segment will contain sections with contiguous | |
992 | LMAs, even if the VMAs are not. */ | |
993 | newsect->lma = (phdr->p_paddr | |
994 | + hdr->sh_offset - phdr->p_offset); | |
995 | ||
996 | /* With contiguous segments, we can't tell from file | |
997 | offsets whether a section with zero size should | |
998 | be placed at the end of one segment or the | |
999 | beginning of the next. Decide based on vaddr. */ | |
1000 | if (hdr->sh_addr >= phdr->p_vaddr | |
1001 | && (hdr->sh_addr + hdr->sh_size | |
1002 | <= phdr->p_vaddr + phdr->p_memsz)) | |
1003 | break; | |
252b5132 RH |
1004 | } |
1005 | } | |
1006 | } | |
1007 | ||
4a114e3e L |
1008 | /* Compress/decompress DWARF debug sections with names: .debug_* and |
1009 | .zdebug_*, after the section flags is set. */ | |
1010 | if ((flags & SEC_DEBUGGING) | |
1011 | && ((name[1] == 'd' && name[6] == '_') | |
1012 | || (name[1] == 'z' && name[7] == '_'))) | |
1013 | { | |
1014 | enum { nothing, compress, decompress } action = nothing; | |
4e011fb5 | 1015 | char *new_name; |
4a114e3e L |
1016 | |
1017 | if (bfd_is_section_compressed (abfd, newsect)) | |
1018 | { | |
1019 | /* Compressed section. Check if we should decompress. */ | |
1020 | if ((abfd->flags & BFD_DECOMPRESS)) | |
1021 | action = decompress; | |
1022 | } | |
1023 | else | |
1024 | { | |
1025 | /* Normal section. Check if we should compress. */ | |
1026 | if ((abfd->flags & BFD_COMPRESS)) | |
1027 | action = compress; | |
1028 | } | |
1029 | ||
4e011fb5 | 1030 | new_name = NULL; |
4a114e3e L |
1031 | switch (action) |
1032 | { | |
1033 | case nothing: | |
1034 | break; | |
1035 | case compress: | |
1036 | if (!bfd_init_section_compress_status (abfd, newsect)) | |
1037 | { | |
1038 | (*_bfd_error_handler) | |
1039 | (_("%B: unable to initialize commpress status for section %s"), | |
1040 | abfd, name); | |
1041 | return FALSE; | |
1042 | } | |
4e011fb5 AM |
1043 | if (name[1] != 'z') |
1044 | { | |
1045 | unsigned int len = strlen (name); | |
1046 | ||
1047 | new_name = bfd_alloc (abfd, len + 2); | |
1048 | if (new_name == NULL) | |
1049 | return FALSE; | |
1050 | new_name[0] = '.'; | |
1051 | new_name[1] = 'z'; | |
1052 | memcpy (new_name + 2, name + 1, len); | |
1053 | } | |
4a114e3e L |
1054 | break; |
1055 | case decompress: | |
1056 | if (!bfd_init_section_decompress_status (abfd, newsect)) | |
1057 | { | |
1058 | (*_bfd_error_handler) | |
1059 | (_("%B: unable to initialize decommpress status for section %s"), | |
1060 | abfd, name); | |
1061 | return FALSE; | |
1062 | } | |
4e011fb5 AM |
1063 | if (name[1] == 'z') |
1064 | { | |
1065 | unsigned int len = strlen (name); | |
1066 | ||
1067 | new_name = bfd_alloc (abfd, len); | |
1068 | if (new_name == NULL) | |
1069 | return FALSE; | |
1070 | new_name[0] = '.'; | |
1071 | memcpy (new_name + 1, name + 2, len - 1); | |
1072 | } | |
4a114e3e L |
1073 | break; |
1074 | } | |
4e011fb5 AM |
1075 | if (new_name != NULL) |
1076 | bfd_rename_section (abfd, newsect, new_name); | |
4a114e3e L |
1077 | } |
1078 | ||
b34976b6 | 1079 | return TRUE; |
252b5132 RH |
1080 | } |
1081 | ||
252b5132 RH |
1082 | const char *const bfd_elf_section_type_names[] = { |
1083 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
1084 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
1085 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
1086 | }; | |
1087 | ||
1049f94e | 1088 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
1089 | output, and the reloc is against an external symbol, and nothing |
1090 | has given us any additional addend, the resulting reloc will also | |
1091 | be against the same symbol. In such a case, we don't want to | |
1092 | change anything about the way the reloc is handled, since it will | |
1093 | all be done at final link time. Rather than put special case code | |
1094 | into bfd_perform_relocation, all the reloc types use this howto | |
1095 | function. It just short circuits the reloc if producing | |
1049f94e | 1096 | relocatable output against an external symbol. */ |
252b5132 | 1097 | |
252b5132 | 1098 | bfd_reloc_status_type |
217aa764 AM |
1099 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
1100 | arelent *reloc_entry, | |
1101 | asymbol *symbol, | |
1102 | void *data ATTRIBUTE_UNUSED, | |
1103 | asection *input_section, | |
1104 | bfd *output_bfd, | |
1105 | char **error_message ATTRIBUTE_UNUSED) | |
1106 | { | |
1107 | if (output_bfd != NULL | |
252b5132 RH |
1108 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
1109 | && (! reloc_entry->howto->partial_inplace | |
1110 | || reloc_entry->addend == 0)) | |
1111 | { | |
1112 | reloc_entry->address += input_section->output_offset; | |
1113 | return bfd_reloc_ok; | |
1114 | } | |
1115 | ||
1116 | return bfd_reloc_continue; | |
1117 | } | |
1118 | \f | |
0ac4564e L |
1119 | /* Copy the program header and other data from one object module to |
1120 | another. */ | |
252b5132 | 1121 | |
b34976b6 | 1122 | bfd_boolean |
217aa764 | 1123 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
1124 | { |
1125 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1126 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1127 | return TRUE; |
2d502050 L |
1128 | |
1129 | BFD_ASSERT (!elf_flags_init (obfd) | |
1130 | || (elf_elfheader (obfd)->e_flags | |
1131 | == elf_elfheader (ibfd)->e_flags)); | |
1132 | ||
0ac4564e | 1133 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1134 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 | 1135 | elf_flags_init (obfd) = TRUE; |
104d59d1 JM |
1136 | |
1137 | /* Copy object attributes. */ | |
1138 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
b34976b6 | 1139 | return TRUE; |
2d502050 L |
1140 | } |
1141 | ||
cedc298e L |
1142 | static const char * |
1143 | get_segment_type (unsigned int p_type) | |
1144 | { | |
1145 | const char *pt; | |
1146 | switch (p_type) | |
1147 | { | |
1148 | case PT_NULL: pt = "NULL"; break; | |
1149 | case PT_LOAD: pt = "LOAD"; break; | |
1150 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1151 | case PT_INTERP: pt = "INTERP"; break; | |
1152 | case PT_NOTE: pt = "NOTE"; break; | |
1153 | case PT_SHLIB: pt = "SHLIB"; break; | |
1154 | case PT_PHDR: pt = "PHDR"; break; | |
1155 | case PT_TLS: pt = "TLS"; break; | |
1156 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; | |
2b05f1b7 | 1157 | case PT_GNU_STACK: pt = "STACK"; break; |
cedc298e L |
1158 | case PT_GNU_RELRO: pt = "RELRO"; break; |
1159 | default: pt = NULL; break; | |
1160 | } | |
1161 | return pt; | |
1162 | } | |
1163 | ||
f0b79d91 L |
1164 | /* Print out the program headers. */ |
1165 | ||
b34976b6 | 1166 | bfd_boolean |
217aa764 | 1167 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1168 | { |
a50b1753 | 1169 | FILE *f = (FILE *) farg; |
252b5132 RH |
1170 | Elf_Internal_Phdr *p; |
1171 | asection *s; | |
1172 | bfd_byte *dynbuf = NULL; | |
1173 | ||
1174 | p = elf_tdata (abfd)->phdr; | |
1175 | if (p != NULL) | |
1176 | { | |
1177 | unsigned int i, c; | |
1178 | ||
1179 | fprintf (f, _("\nProgram Header:\n")); | |
1180 | c = elf_elfheader (abfd)->e_phnum; | |
1181 | for (i = 0; i < c; i++, p++) | |
1182 | { | |
cedc298e | 1183 | const char *pt = get_segment_type (p->p_type); |
252b5132 RH |
1184 | char buf[20]; |
1185 | ||
cedc298e | 1186 | if (pt == NULL) |
252b5132 | 1187 | { |
cedc298e L |
1188 | sprintf (buf, "0x%lx", p->p_type); |
1189 | pt = buf; | |
252b5132 | 1190 | } |
dc810e39 | 1191 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1192 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1193 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1194 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1195 | fprintf (f, " paddr 0x"); |
60b89a18 | 1196 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1197 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1198 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1199 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1200 | fprintf (f, " memsz 0x"); |
60b89a18 | 1201 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1202 | fprintf (f, " flags %c%c%c", |
1203 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1204 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1205 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1206 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1207 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1208 | fprintf (f, "\n"); |
1209 | } | |
1210 | } | |
1211 | ||
1212 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1213 | if (s != NULL) | |
1214 | { | |
cb33740c | 1215 | unsigned int elfsec; |
dc810e39 | 1216 | unsigned long shlink; |
252b5132 RH |
1217 | bfd_byte *extdyn, *extdynend; |
1218 | size_t extdynsize; | |
217aa764 | 1219 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1220 | |
1221 | fprintf (f, _("\nDynamic Section:\n")); | |
1222 | ||
eea6121a | 1223 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1224 | goto error_return; |
1225 | ||
1226 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
cb33740c | 1227 | if (elfsec == SHN_BAD) |
252b5132 | 1228 | goto error_return; |
dc810e39 | 1229 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1230 | |
1231 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1232 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1233 | ||
1234 | extdyn = dynbuf; | |
eea6121a | 1235 | extdynend = extdyn + s->size; |
252b5132 RH |
1236 | for (; extdyn < extdynend; extdyn += extdynsize) |
1237 | { | |
1238 | Elf_Internal_Dyn dyn; | |
ad9563d6 | 1239 | const char *name = ""; |
252b5132 | 1240 | char ab[20]; |
b34976b6 | 1241 | bfd_boolean stringp; |
ad9563d6 | 1242 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 1243 | |
217aa764 | 1244 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1245 | |
1246 | if (dyn.d_tag == DT_NULL) | |
1247 | break; | |
1248 | ||
b34976b6 | 1249 | stringp = FALSE; |
252b5132 RH |
1250 | switch (dyn.d_tag) |
1251 | { | |
1252 | default: | |
ad9563d6 CM |
1253 | if (bed->elf_backend_get_target_dtag) |
1254 | name = (*bed->elf_backend_get_target_dtag) (dyn.d_tag); | |
1255 | ||
1256 | if (!strcmp (name, "")) | |
1257 | { | |
1258 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1259 | name = ab; | |
1260 | } | |
252b5132 RH |
1261 | break; |
1262 | ||
b34976b6 | 1263 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1264 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1265 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1266 | case DT_HASH: name = "HASH"; break; | |
1267 | case DT_STRTAB: name = "STRTAB"; break; | |
1268 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1269 | case DT_RELA: name = "RELA"; break; | |
1270 | case DT_RELASZ: name = "RELASZ"; break; | |
1271 | case DT_RELAENT: name = "RELAENT"; break; | |
1272 | case DT_STRSZ: name = "STRSZ"; break; | |
1273 | case DT_SYMENT: name = "SYMENT"; break; | |
1274 | case DT_INIT: name = "INIT"; break; | |
1275 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1276 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1277 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1278 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1279 | case DT_REL: name = "REL"; break; | |
1280 | case DT_RELSZ: name = "RELSZ"; break; | |
1281 | case DT_RELENT: name = "RELENT"; break; | |
1282 | case DT_PLTREL: name = "PLTREL"; break; | |
1283 | case DT_DEBUG: name = "DEBUG"; break; | |
1284 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1285 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1286 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1287 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1288 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1289 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1290 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1291 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1292 | case DT_FLAGS: name = "FLAGS"; break; |
1293 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1294 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1295 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1296 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1297 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1298 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1299 | case DT_FEATURE: name = "FEATURE"; break; | |
1300 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1301 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1302 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1303 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1304 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1305 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1306 | case DT_PLTPAD: name = "PLTPAD"; break; |
1307 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1308 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1309 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1310 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1311 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1312 | case DT_VERSYM: name = "VERSYM"; break; |
1313 | case DT_VERDEF: name = "VERDEF"; break; | |
1314 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1315 | case DT_VERNEED: name = "VERNEED"; break; | |
1316 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1317 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1318 | case DT_USED: name = "USED"; break; |
b34976b6 | 1319 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
fdc90cb4 | 1320 | case DT_GNU_HASH: name = "GNU_HASH"; break; |
252b5132 RH |
1321 | } |
1322 | ||
ad9563d6 | 1323 | fprintf (f, " %-20s ", name); |
252b5132 | 1324 | if (! stringp) |
a1f3c56e AN |
1325 | { |
1326 | fprintf (f, "0x"); | |
1327 | bfd_fprintf_vma (abfd, f, dyn.d_un.d_val); | |
1328 | } | |
252b5132 RH |
1329 | else |
1330 | { | |
1331 | const char *string; | |
dc810e39 | 1332 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1333 | |
dc810e39 | 1334 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1335 | if (string == NULL) |
1336 | goto error_return; | |
1337 | fprintf (f, "%s", string); | |
1338 | } | |
1339 | fprintf (f, "\n"); | |
1340 | } | |
1341 | ||
1342 | free (dynbuf); | |
1343 | dynbuf = NULL; | |
1344 | } | |
1345 | ||
1346 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1347 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1348 | { | |
fc0e6df6 | 1349 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1350 | return FALSE; |
252b5132 RH |
1351 | } |
1352 | ||
1353 | if (elf_dynverdef (abfd) != 0) | |
1354 | { | |
1355 | Elf_Internal_Verdef *t; | |
1356 | ||
1357 | fprintf (f, _("\nVersion definitions:\n")); | |
1358 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1359 | { | |
1360 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
d0fb9a8d JJ |
1361 | t->vd_flags, t->vd_hash, |
1362 | t->vd_nodename ? t->vd_nodename : "<corrupt>"); | |
1363 | if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL) | |
252b5132 RH |
1364 | { |
1365 | Elf_Internal_Verdaux *a; | |
1366 | ||
1367 | fprintf (f, "\t"); | |
1368 | for (a = t->vd_auxptr->vda_nextptr; | |
1369 | a != NULL; | |
1370 | a = a->vda_nextptr) | |
d0fb9a8d JJ |
1371 | fprintf (f, "%s ", |
1372 | a->vda_nodename ? a->vda_nodename : "<corrupt>"); | |
252b5132 RH |
1373 | fprintf (f, "\n"); |
1374 | } | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | if (elf_dynverref (abfd) != 0) | |
1379 | { | |
1380 | Elf_Internal_Verneed *t; | |
1381 | ||
1382 | fprintf (f, _("\nVersion References:\n")); | |
1383 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1384 | { | |
1385 | Elf_Internal_Vernaux *a; | |
1386 | ||
d0fb9a8d JJ |
1387 | fprintf (f, _(" required from %s:\n"), |
1388 | t->vn_filename ? t->vn_filename : "<corrupt>"); | |
252b5132 RH |
1389 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
1390 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
d0fb9a8d JJ |
1391 | a->vna_flags, a->vna_other, |
1392 | a->vna_nodename ? a->vna_nodename : "<corrupt>"); | |
252b5132 RH |
1393 | } |
1394 | } | |
1395 | ||
b34976b6 | 1396 | return TRUE; |
252b5132 RH |
1397 | |
1398 | error_return: | |
1399 | if (dynbuf != NULL) | |
1400 | free (dynbuf); | |
b34976b6 | 1401 | return FALSE; |
252b5132 RH |
1402 | } |
1403 | ||
1404 | /* Display ELF-specific fields of a symbol. */ | |
1405 | ||
1406 | void | |
217aa764 AM |
1407 | bfd_elf_print_symbol (bfd *abfd, |
1408 | void *filep, | |
1409 | asymbol *symbol, | |
1410 | bfd_print_symbol_type how) | |
252b5132 | 1411 | { |
a50b1753 | 1412 | FILE *file = (FILE *) filep; |
252b5132 RH |
1413 | switch (how) |
1414 | { | |
1415 | case bfd_print_symbol_name: | |
1416 | fprintf (file, "%s", symbol->name); | |
1417 | break; | |
1418 | case bfd_print_symbol_more: | |
1419 | fprintf (file, "elf "); | |
60b89a18 | 1420 | bfd_fprintf_vma (abfd, file, symbol->value); |
0af1713e | 1421 | fprintf (file, " %lx", (unsigned long) symbol->flags); |
252b5132 RH |
1422 | break; |
1423 | case bfd_print_symbol_all: | |
1424 | { | |
4e8a9624 AM |
1425 | const char *section_name; |
1426 | const char *name = NULL; | |
9c5bfbb7 | 1427 | const struct elf_backend_data *bed; |
7a13edea | 1428 | unsigned char st_other; |
dbb410c3 | 1429 | bfd_vma val; |
c044fabd | 1430 | |
252b5132 | 1431 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1432 | |
1433 | bed = get_elf_backend_data (abfd); | |
1434 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1435 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1436 | |
1437 | if (name == NULL) | |
1438 | { | |
7ee38065 | 1439 | name = symbol->name; |
217aa764 | 1440 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1441 | } |
1442 | ||
252b5132 RH |
1443 | fprintf (file, " %s\t", section_name); |
1444 | /* Print the "other" value for a symbol. For common symbols, | |
1445 | we've already printed the size; now print the alignment. | |
1446 | For other symbols, we have no specified alignment, and | |
1447 | we've printed the address; now print the size. */ | |
dcf6c779 | 1448 | if (symbol->section && bfd_is_com_section (symbol->section)) |
dbb410c3 AM |
1449 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; |
1450 | else | |
1451 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1452 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1453 | |
1454 | /* If we have version information, print it. */ | |
1455 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1456 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1457 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1458 | { | |
1459 | unsigned int vernum; | |
1460 | const char *version_string; | |
1461 | ||
1462 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1463 | ||
1464 | if (vernum == 0) | |
1465 | version_string = ""; | |
1466 | else if (vernum == 1) | |
1467 | version_string = "Base"; | |
1468 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1469 | version_string = | |
1470 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1471 | else | |
1472 | { | |
1473 | Elf_Internal_Verneed *t; | |
1474 | ||
1475 | version_string = ""; | |
1476 | for (t = elf_tdata (abfd)->verref; | |
1477 | t != NULL; | |
1478 | t = t->vn_nextref) | |
1479 | { | |
1480 | Elf_Internal_Vernaux *a; | |
1481 | ||
1482 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1483 | { | |
1484 | if (a->vna_other == vernum) | |
1485 | { | |
1486 | version_string = a->vna_nodename; | |
1487 | break; | |
1488 | } | |
1489 | } | |
1490 | } | |
1491 | } | |
1492 | ||
1493 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1494 | fprintf (file, " %-11s", version_string); | |
1495 | else | |
1496 | { | |
1497 | int i; | |
1498 | ||
1499 | fprintf (file, " (%s)", version_string); | |
1500 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1501 | putc (' ', file); | |
1502 | } | |
1503 | } | |
1504 | ||
1505 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1506 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1507 | |
7a13edea NC |
1508 | switch (st_other) |
1509 | { | |
1510 | case 0: break; | |
1511 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1512 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1513 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1514 | default: | |
1515 | /* Some other non-defined flags are also present, so print | |
1516 | everything hex. */ | |
1517 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1518 | } | |
252b5132 | 1519 | |
587ff49e | 1520 | fprintf (file, " %s", name); |
252b5132 RH |
1521 | } |
1522 | break; | |
1523 | } | |
1524 | } | |
252b5132 | 1525 | |
252b5132 RH |
1526 | /* Allocate an ELF string table--force the first byte to be zero. */ |
1527 | ||
1528 | struct bfd_strtab_hash * | |
217aa764 | 1529 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1530 | { |
1531 | struct bfd_strtab_hash *ret; | |
1532 | ||
1533 | ret = _bfd_stringtab_init (); | |
1534 | if (ret != NULL) | |
1535 | { | |
1536 | bfd_size_type loc; | |
1537 | ||
b34976b6 | 1538 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1539 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1540 | if (loc == (bfd_size_type) -1) | |
1541 | { | |
1542 | _bfd_stringtab_free (ret); | |
1543 | ret = NULL; | |
1544 | } | |
1545 | } | |
1546 | return ret; | |
1547 | } | |
1548 | \f | |
1549 | /* ELF .o/exec file reading */ | |
1550 | ||
c044fabd | 1551 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1552 | |
b34976b6 | 1553 | bfd_boolean |
217aa764 | 1554 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 | 1555 | { |
4fbb74a6 AM |
1556 | Elf_Internal_Shdr *hdr; |
1557 | Elf_Internal_Ehdr *ehdr; | |
1558 | const struct elf_backend_data *bed; | |
90937f86 | 1559 | const char *name; |
252b5132 | 1560 | |
4fbb74a6 AM |
1561 | if (shindex >= elf_numsections (abfd)) |
1562 | return FALSE; | |
1563 | ||
1564 | hdr = elf_elfsections (abfd)[shindex]; | |
1565 | ehdr = elf_elfheader (abfd); | |
1566 | name = bfd_elf_string_from_elf_section (abfd, ehdr->e_shstrndx, | |
1b3a8575 | 1567 | hdr->sh_name); |
933d961a JJ |
1568 | if (name == NULL) |
1569 | return FALSE; | |
252b5132 | 1570 | |
4fbb74a6 | 1571 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
1572 | switch (hdr->sh_type) |
1573 | { | |
1574 | case SHT_NULL: | |
1575 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1576 | return TRUE; |
252b5132 RH |
1577 | |
1578 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1579 | case SHT_NOBITS: /* .bss section. */ |
1580 | case SHT_HASH: /* .hash section. */ | |
1581 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1582 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1583 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1584 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1585 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
fdc90cb4 | 1586 | case SHT_GNU_HASH: /* .gnu.hash section. */ |
6dc132d9 | 1587 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1588 | |
797fc050 | 1589 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1590 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1591 | return FALSE; |
cfcac11d NC |
1592 | if (hdr->sh_link > elf_numsections (abfd)) |
1593 | { | |
caa83f8b | 1594 | /* PR 10478: Accept Solaris binaries with a sh_link |
cfcac11d NC |
1595 | field set to SHN_BEFORE or SHN_AFTER. */ |
1596 | switch (bfd_get_arch (abfd)) | |
1597 | { | |
caa83f8b | 1598 | case bfd_arch_i386: |
cfcac11d NC |
1599 | case bfd_arch_sparc: |
1600 | if (hdr->sh_link == (SHN_LORESERVE & 0xffff) /* SHN_BEFORE */ | |
1601 | || hdr->sh_link == ((SHN_LORESERVE + 1) & 0xffff) /* SHN_AFTER */) | |
1602 | break; | |
1603 | /* Otherwise fall through. */ | |
1604 | default: | |
1605 | return FALSE; | |
1606 | } | |
1607 | } | |
1608 | else if (elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
8e0ed13f | 1609 | return FALSE; |
cfcac11d | 1610 | else if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
797fc050 AM |
1611 | { |
1612 | Elf_Internal_Shdr *dynsymhdr; | |
1613 | ||
1614 | /* The shared libraries distributed with hpux11 have a bogus | |
1615 | sh_link field for the ".dynamic" section. Find the | |
1616 | string table for the ".dynsym" section instead. */ | |
1617 | if (elf_dynsymtab (abfd) != 0) | |
1618 | { | |
1619 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1620 | hdr->sh_link = dynsymhdr->sh_link; | |
1621 | } | |
1622 | else | |
1623 | { | |
1624 | unsigned int i, num_sec; | |
1625 | ||
1626 | num_sec = elf_numsections (abfd); | |
1627 | for (i = 1; i < num_sec; i++) | |
1628 | { | |
1629 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1630 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1631 | { | |
1632 | hdr->sh_link = dynsymhdr->sh_link; | |
1633 | break; | |
1634 | } | |
1635 | } | |
1636 | } | |
1637 | } | |
1638 | break; | |
1639 | ||
252b5132 RH |
1640 | case SHT_SYMTAB: /* A symbol table */ |
1641 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1642 | return TRUE; |
252b5132 | 1643 | |
a50b2160 JJ |
1644 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1645 | return FALSE; | |
3337c1e5 AM |
1646 | if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size) |
1647 | return FALSE; | |
252b5132 RH |
1648 | BFD_ASSERT (elf_onesymtab (abfd) == 0); |
1649 | elf_onesymtab (abfd) = shindex; | |
1650 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1651 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1652 | abfd->flags |= HAS_SYMS; | |
1653 | ||
1654 | /* Sometimes a shared object will map in the symbol table. If | |
08a40648 AM |
1655 | SHF_ALLOC is set, and this is a shared object, then we also |
1656 | treat this section as a BFD section. We can not base the | |
1657 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1658 | set in a relocatable object file, which would confuse the | |
1659 | linker. */ | |
252b5132 RH |
1660 | if ((hdr->sh_flags & SHF_ALLOC) != 0 |
1661 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1662 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1663 | shindex)) | |
b34976b6 | 1664 | return FALSE; |
252b5132 | 1665 | |
1b3a8575 AM |
1666 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1667 | can't read symbols without that section loaded as well. It | |
1668 | is most likely specified by the next section header. */ | |
1669 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1670 | { | |
1671 | unsigned int i, num_sec; | |
1672 | ||
1673 | num_sec = elf_numsections (abfd); | |
1674 | for (i = shindex + 1; i < num_sec; i++) | |
1675 | { | |
1676 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1677 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1678 | && hdr2->sh_link == shindex) | |
1679 | break; | |
1680 | } | |
1681 | if (i == num_sec) | |
1682 | for (i = 1; i < shindex; i++) | |
1683 | { | |
1684 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1685 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1686 | && hdr2->sh_link == shindex) | |
1687 | break; | |
1688 | } | |
1689 | if (i != shindex) | |
1690 | return bfd_section_from_shdr (abfd, i); | |
1691 | } | |
b34976b6 | 1692 | return TRUE; |
252b5132 RH |
1693 | |
1694 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1695 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1696 | return TRUE; |
252b5132 | 1697 | |
a50b2160 JJ |
1698 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1699 | return FALSE; | |
252b5132 RH |
1700 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); |
1701 | elf_dynsymtab (abfd) = shindex; | |
1702 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1703 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1704 | abfd->flags |= HAS_SYMS; | |
1705 | ||
1706 | /* Besides being a symbol table, we also treat this as a regular | |
1707 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1708 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1709 | |
9ad5cbcf AM |
1710 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1711 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1712 | return TRUE; |
9ad5cbcf | 1713 | |
1b3a8575 | 1714 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1715 | elf_symtab_shndx (abfd) = shindex; |
1716 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1717 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1718 | return TRUE; |
9ad5cbcf | 1719 | |
252b5132 RH |
1720 | case SHT_STRTAB: /* A string table */ |
1721 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1722 | return TRUE; |
252b5132 RH |
1723 | if (ehdr->e_shstrndx == shindex) |
1724 | { | |
1725 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1726 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1727 | return TRUE; |
252b5132 | 1728 | } |
1b3a8575 AM |
1729 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1730 | { | |
1731 | symtab_strtab: | |
1732 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1733 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1734 | return TRUE; | |
1735 | } | |
1736 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1737 | { | |
1738 | dynsymtab_strtab: | |
1739 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1740 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1741 | elf_elfsections (abfd)[shindex] = hdr; | |
1742 | /* We also treat this as a regular section, so that objcopy | |
1743 | can handle it. */ | |
6dc132d9 L |
1744 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1745 | shindex); | |
1b3a8575 | 1746 | } |
252b5132 | 1747 | |
1b3a8575 AM |
1748 | /* If the string table isn't one of the above, then treat it as a |
1749 | regular section. We need to scan all the headers to be sure, | |
1750 | just in case this strtab section appeared before the above. */ | |
1751 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
1752 | { | |
1753 | unsigned int i, num_sec; | |
252b5132 | 1754 | |
1b3a8575 AM |
1755 | num_sec = elf_numsections (abfd); |
1756 | for (i = 1; i < num_sec; i++) | |
1757 | { | |
1758 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1759 | if (hdr2->sh_link == shindex) | |
1760 | { | |
933d961a JJ |
1761 | /* Prevent endless recursion on broken objects. */ |
1762 | if (i == shindex) | |
1763 | return FALSE; | |
1b3a8575 AM |
1764 | if (! bfd_section_from_shdr (abfd, i)) |
1765 | return FALSE; | |
1766 | if (elf_onesymtab (abfd) == i) | |
1767 | goto symtab_strtab; | |
1768 | if (elf_dynsymtab (abfd) == i) | |
1769 | goto dynsymtab_strtab; | |
1770 | } | |
1771 | } | |
1772 | } | |
6dc132d9 | 1773 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1774 | |
1775 | case SHT_REL: | |
1776 | case SHT_RELA: | |
1777 | /* *These* do a lot of work -- but build no sections! */ | |
1778 | { | |
1779 | asection *target_sect; | |
d4730f92 | 1780 | Elf_Internal_Shdr *hdr2, **p_hdr; |
9ad5cbcf | 1781 | unsigned int num_sec = elf_numsections (abfd); |
d4730f92 BS |
1782 | struct bfd_elf_section_data *esdt; |
1783 | bfd_size_type amt; | |
252b5132 | 1784 | |
aa2ca951 JJ |
1785 | if (hdr->sh_entsize |
1786 | != (bfd_size_type) (hdr->sh_type == SHT_REL | |
a50b2160 JJ |
1787 | ? bed->s->sizeof_rel : bed->s->sizeof_rela)) |
1788 | return FALSE; | |
1789 | ||
03ae5f59 | 1790 | /* Check for a bogus link to avoid crashing. */ |
4fbb74a6 | 1791 | if (hdr->sh_link >= num_sec) |
03ae5f59 ILT |
1792 | { |
1793 | ((*_bfd_error_handler) | |
d003868e AM |
1794 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
1795 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
1796 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1797 | shindex); | |
03ae5f59 ILT |
1798 | } |
1799 | ||
252b5132 RH |
1800 | /* For some incomprehensible reason Oracle distributes |
1801 | libraries for Solaris in which some of the objects have | |
1802 | bogus sh_link fields. It would be nice if we could just | |
1803 | reject them, but, unfortunately, some people need to use | |
1804 | them. We scan through the section headers; if we find only | |
1805 | one suitable symbol table, we clobber the sh_link to point | |
83b89087 L |
1806 | to it. I hope this doesn't break anything. |
1807 | ||
1808 | Don't do it on executable nor shared library. */ | |
1809 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0 | |
1810 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
252b5132 RH |
1811 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) |
1812 | { | |
9ad5cbcf | 1813 | unsigned int scan; |
252b5132 RH |
1814 | int found; |
1815 | ||
1816 | found = 0; | |
9ad5cbcf | 1817 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
1818 | { |
1819 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
1820 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
1821 | { | |
1822 | if (found != 0) | |
1823 | { | |
1824 | found = 0; | |
1825 | break; | |
1826 | } | |
1827 | found = scan; | |
1828 | } | |
1829 | } | |
1830 | if (found != 0) | |
1831 | hdr->sh_link = found; | |
1832 | } | |
1833 | ||
1834 | /* Get the symbol table. */ | |
1b3a8575 AM |
1835 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
1836 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 1837 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 1838 | return FALSE; |
252b5132 RH |
1839 | |
1840 | /* If this reloc section does not use the main symbol table we | |
1841 | don't treat it as a reloc section. BFD can't adequately | |
1842 | represent such a section, so at least for now, we don't | |
c044fabd | 1843 | try. We just present it as a normal section. We also |
60bcf0fa | 1844 | can't use it as a reloc section if it points to the null |
83b89087 L |
1845 | section, an invalid section, another reloc section, or its |
1846 | sh_link points to the null section. */ | |
185ef66d | 1847 | if (hdr->sh_link != elf_onesymtab (abfd) |
83b89087 | 1848 | || hdr->sh_link == SHN_UNDEF |
185ef66d | 1849 | || hdr->sh_info == SHN_UNDEF |
185ef66d AM |
1850 | || hdr->sh_info >= num_sec |
1851 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL | |
1852 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA) | |
6dc132d9 L |
1853 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1854 | shindex); | |
252b5132 RH |
1855 | |
1856 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 1857 | return FALSE; |
252b5132 RH |
1858 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
1859 | if (target_sect == NULL) | |
b34976b6 | 1860 | return FALSE; |
252b5132 | 1861 | |
d4730f92 BS |
1862 | esdt = elf_section_data (target_sect); |
1863 | if (hdr->sh_type == SHT_RELA) | |
1864 | p_hdr = &esdt->rela.hdr; | |
252b5132 | 1865 | else |
d4730f92 BS |
1866 | p_hdr = &esdt->rel.hdr; |
1867 | ||
1868 | BFD_ASSERT (*p_hdr == NULL); | |
1869 | amt = sizeof (*hdr2); | |
1870 | hdr2 = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt); | |
1871 | if (hdr2 == NULL) | |
1872 | return FALSE; | |
252b5132 | 1873 | *hdr2 = *hdr; |
d4730f92 | 1874 | *p_hdr = hdr2; |
252b5132 | 1875 | elf_elfsections (abfd)[shindex] = hdr2; |
d9bc7a44 | 1876 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
1877 | target_sect->flags |= SEC_RELOC; |
1878 | target_sect->relocation = NULL; | |
1879 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
1880 | /* In the section to which the relocations apply, mark whether |
1881 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 1882 | if (hdr->sh_size != 0) |
d4730f92 BS |
1883 | { |
1884 | if (hdr->sh_type == SHT_RELA) | |
1885 | target_sect->use_rela_p = 1; | |
1886 | } | |
252b5132 | 1887 | abfd->flags |= HAS_RELOC; |
b34976b6 | 1888 | return TRUE; |
252b5132 | 1889 | } |
252b5132 RH |
1890 | |
1891 | case SHT_GNU_verdef: | |
1892 | elf_dynverdef (abfd) = shindex; | |
1893 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 1894 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1895 | |
1896 | case SHT_GNU_versym: | |
a50b2160 JJ |
1897 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
1898 | return FALSE; | |
252b5132 RH |
1899 | elf_dynversym (abfd) = shindex; |
1900 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 1901 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1902 | |
1903 | case SHT_GNU_verneed: | |
1904 | elf_dynverref (abfd) = shindex; | |
1905 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 1906 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1907 | |
1908 | case SHT_SHLIB: | |
b34976b6 | 1909 | return TRUE; |
252b5132 | 1910 | |
dbb410c3 | 1911 | case SHT_GROUP: |
1783205a | 1912 | if (! IS_VALID_GROUP_SECTION_HEADER (hdr)) |
a50b2160 | 1913 | return FALSE; |
6dc132d9 | 1914 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1915 | return FALSE; |
dbb410c3 AM |
1916 | if (hdr->contents != NULL) |
1917 | { | |
1918 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
1783205a | 1919 | unsigned int n_elt = hdr->sh_size / GRP_ENTRY_SIZE; |
dbb410c3 AM |
1920 | asection *s; |
1921 | ||
b885599b AM |
1922 | if (idx->flags & GRP_COMDAT) |
1923 | hdr->bfd_section->flags | |
1924 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
1925 | ||
45c5e9ed L |
1926 | /* We try to keep the same section order as it comes in. */ |
1927 | idx += n_elt; | |
dbb410c3 | 1928 | while (--n_elt != 0) |
1783205a NC |
1929 | { |
1930 | --idx; | |
1931 | ||
1932 | if (idx->shdr != NULL | |
1933 | && (s = idx->shdr->bfd_section) != NULL | |
1934 | && elf_next_in_group (s) != NULL) | |
1935 | { | |
1936 | elf_next_in_group (hdr->bfd_section) = s; | |
1937 | break; | |
1938 | } | |
1939 | } | |
dbb410c3 AM |
1940 | } |
1941 | break; | |
1942 | ||
252b5132 | 1943 | default: |
104d59d1 JM |
1944 | /* Possibly an attributes section. */ |
1945 | if (hdr->sh_type == SHT_GNU_ATTRIBUTES | |
1946 | || hdr->sh_type == bed->obj_attrs_section_type) | |
1947 | { | |
1948 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
1949 | return FALSE; | |
1950 | _bfd_elf_parse_attributes (abfd, hdr); | |
1951 | return TRUE; | |
1952 | } | |
1953 | ||
252b5132 | 1954 | /* Check for any processor-specific section types. */ |
3eb70a79 L |
1955 | if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex)) |
1956 | return TRUE; | |
1957 | ||
1958 | if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER) | |
1959 | { | |
1960 | if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
1961 | /* FIXME: How to properly handle allocated section reserved | |
1962 | for applications? */ | |
1963 | (*_bfd_error_handler) | |
1964 | (_("%B: don't know how to handle allocated, application " | |
1965 | "specific section `%s' [0x%8x]"), | |
1966 | abfd, name, hdr->sh_type); | |
1967 | else | |
1968 | /* Allow sections reserved for applications. */ | |
1969 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
1970 | shindex); | |
1971 | } | |
1972 | else if (hdr->sh_type >= SHT_LOPROC | |
1973 | && hdr->sh_type <= SHT_HIPROC) | |
1974 | /* FIXME: We should handle this section. */ | |
1975 | (*_bfd_error_handler) | |
1976 | (_("%B: don't know how to handle processor specific section " | |
1977 | "`%s' [0x%8x]"), | |
1978 | abfd, name, hdr->sh_type); | |
1979 | else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS) | |
ff15b240 NC |
1980 | { |
1981 | /* Unrecognised OS-specific sections. */ | |
1982 | if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0) | |
1983 | /* SHF_OS_NONCONFORMING indicates that special knowledge is | |
08a40648 | 1984 | required to correctly process the section and the file should |
ff15b240 NC |
1985 | be rejected with an error message. */ |
1986 | (*_bfd_error_handler) | |
1987 | (_("%B: don't know how to handle OS specific section " | |
1988 | "`%s' [0x%8x]"), | |
1989 | abfd, name, hdr->sh_type); | |
1990 | else | |
1991 | /* Otherwise it should be processed. */ | |
1992 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
1993 | } | |
3eb70a79 L |
1994 | else |
1995 | /* FIXME: We should handle this section. */ | |
1996 | (*_bfd_error_handler) | |
1997 | (_("%B: don't know how to handle section `%s' [0x%8x]"), | |
1998 | abfd, name, hdr->sh_type); | |
1999 | ||
2000 | return FALSE; | |
252b5132 RH |
2001 | } |
2002 | ||
b34976b6 | 2003 | return TRUE; |
252b5132 RH |
2004 | } |
2005 | ||
87d72d41 | 2006 | /* Return the local symbol specified by ABFD, R_SYMNDX. */ |
ec338859 | 2007 | |
87d72d41 AM |
2008 | Elf_Internal_Sym * |
2009 | bfd_sym_from_r_symndx (struct sym_cache *cache, | |
2010 | bfd *abfd, | |
2011 | unsigned long r_symndx) | |
ec338859 | 2012 | { |
ec338859 AM |
2013 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
2014 | ||
a5d1b3b5 AM |
2015 | if (cache->abfd != abfd || cache->indx[ent] != r_symndx) |
2016 | { | |
2017 | Elf_Internal_Shdr *symtab_hdr; | |
2018 | unsigned char esym[sizeof (Elf64_External_Sym)]; | |
2019 | Elf_External_Sym_Shndx eshndx; | |
ec338859 | 2020 | |
a5d1b3b5 AM |
2021 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2022 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, | |
87d72d41 | 2023 | &cache->sym[ent], esym, &eshndx) == NULL) |
a5d1b3b5 | 2024 | return NULL; |
9ad5cbcf | 2025 | |
a5d1b3b5 AM |
2026 | if (cache->abfd != abfd) |
2027 | { | |
2028 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2029 | cache->abfd = abfd; | |
2030 | } | |
2031 | cache->indx[ent] = r_symndx; | |
ec338859 | 2032 | } |
a5d1b3b5 | 2033 | |
87d72d41 | 2034 | return &cache->sym[ent]; |
ec338859 AM |
2035 | } |
2036 | ||
252b5132 RH |
2037 | /* Given an ELF section number, retrieve the corresponding BFD |
2038 | section. */ | |
2039 | ||
2040 | asection * | |
91d6fa6a | 2041 | bfd_section_from_elf_index (bfd *abfd, unsigned int sec_index) |
252b5132 | 2042 | { |
91d6fa6a | 2043 | if (sec_index >= elf_numsections (abfd)) |
252b5132 | 2044 | return NULL; |
91d6fa6a | 2045 | return elf_elfsections (abfd)[sec_index]->bfd_section; |
252b5132 RH |
2046 | } |
2047 | ||
b35d266b | 2048 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 2049 | { |
0112cd26 NC |
2050 | { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2051 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2052 | }; |
2053 | ||
b35d266b | 2054 | static const struct bfd_elf_special_section special_sections_c[] = |
7f4d3958 | 2055 | { |
0112cd26 NC |
2056 | { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 }, |
2057 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2058 | }; |
2059 | ||
b35d266b | 2060 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 2061 | { |
0112cd26 NC |
2062 | { STRING_COMMA_LEN (".data"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2063 | { STRING_COMMA_LEN (".data1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2064 | { STRING_COMMA_LEN (".debug"), 0, SHT_PROGBITS, 0 }, | |
2065 | { STRING_COMMA_LEN (".debug_line"), 0, SHT_PROGBITS, 0 }, | |
2066 | { STRING_COMMA_LEN (".debug_info"), 0, SHT_PROGBITS, 0 }, | |
2067 | { STRING_COMMA_LEN (".debug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
2068 | { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 }, | |
2069 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, SHF_ALLOC }, | |
2070 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, SHF_ALLOC }, | |
2071 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, SHF_ALLOC }, | |
2072 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2073 | }; |
2074 | ||
b35d266b | 2075 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 | 2076 | { |
0112cd26 NC |
2077 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2078 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2079 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2080 | }; |
2081 | ||
b35d266b | 2082 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 | 2083 | { |
0112cd26 | 2084 | { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
68efed41 | 2085 | { STRING_COMMA_LEN (".gnu.lto_"), -1, SHT_PROGBITS, SHF_EXCLUDE }, |
0112cd26 NC |
2086 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2087 | { STRING_COMMA_LEN (".gnu.version"), 0, SHT_GNU_versym, 0 }, | |
2088 | { STRING_COMMA_LEN (".gnu.version_d"), 0, SHT_GNU_verdef, 0 }, | |
2089 | { STRING_COMMA_LEN (".gnu.version_r"), 0, SHT_GNU_verneed, 0 }, | |
2090 | { STRING_COMMA_LEN (".gnu.liblist"), 0, SHT_GNU_LIBLIST, SHF_ALLOC }, | |
2091 | { STRING_COMMA_LEN (".gnu.conflict"), 0, SHT_RELA, SHF_ALLOC }, | |
2092 | { STRING_COMMA_LEN (".gnu.hash"), 0, SHT_GNU_HASH, SHF_ALLOC }, | |
2093 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2094 | }; |
2095 | ||
b35d266b | 2096 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 | 2097 | { |
0112cd26 NC |
2098 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, SHF_ALLOC }, |
2099 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2100 | }; |
2101 | ||
b35d266b | 2102 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 | 2103 | { |
0112cd26 NC |
2104 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2105 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2106 | { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 }, | |
2107 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2108 | }; |
2109 | ||
b35d266b | 2110 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 | 2111 | { |
0112cd26 NC |
2112 | { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 }, |
2113 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2114 | }; |
2115 | ||
b35d266b | 2116 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2117 | { |
0112cd26 NC |
2118 | { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 }, |
2119 | { STRING_COMMA_LEN (".note"), -1, SHT_NOTE, 0 }, | |
2120 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2121 | }; |
2122 | ||
b35d266b | 2123 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 | 2124 | { |
0112cd26 NC |
2125 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, |
2126 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2127 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2128 | }; |
2129 | ||
b35d266b | 2130 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 | 2131 | { |
0112cd26 NC |
2132 | { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC }, |
2133 | { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2134 | { STRING_COMMA_LEN (".rela"), -1, SHT_RELA, 0 }, | |
2135 | { STRING_COMMA_LEN (".rel"), -1, SHT_REL, 0 }, | |
2136 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2137 | }; |
2138 | ||
b35d266b | 2139 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 | 2140 | { |
0112cd26 NC |
2141 | { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 }, |
2142 | { STRING_COMMA_LEN (".strtab"), 0, SHT_STRTAB, 0 }, | |
2143 | { STRING_COMMA_LEN (".symtab"), 0, SHT_SYMTAB, 0 }, | |
60ff4dc4 HPN |
2144 | /* See struct bfd_elf_special_section declaration for the semantics of |
2145 | this special case where .prefix_length != strlen (.prefix). */ | |
2146 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
0112cd26 | 2147 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
2148 | }; |
2149 | ||
b35d266b | 2150 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 | 2151 | { |
0112cd26 NC |
2152 | { STRING_COMMA_LEN (".text"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2153 | { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2154 | { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2155 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2156 | }; |
2157 | ||
1b315056 CS |
2158 | static const struct bfd_elf_special_section special_sections_z[] = |
2159 | { | |
2160 | { STRING_COMMA_LEN (".zdebug_line"), 0, SHT_PROGBITS, 0 }, | |
2161 | { STRING_COMMA_LEN (".zdebug_info"), 0, SHT_PROGBITS, 0 }, | |
2162 | { STRING_COMMA_LEN (".zdebug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
2163 | { STRING_COMMA_LEN (".zdebug_aranges"), 0, SHT_PROGBITS, 0 }, | |
2164 | { NULL, 0, 0, 0, 0 } | |
2165 | }; | |
2166 | ||
b35d266b | 2167 | static const struct bfd_elf_special_section *special_sections[] = |
7f4d3958 | 2168 | { |
7f4d3958 | 2169 | special_sections_b, /* 'b' */ |
98ece1b3 | 2170 | special_sections_c, /* 'c' */ |
7f4d3958 L |
2171 | special_sections_d, /* 'd' */ |
2172 | NULL, /* 'e' */ | |
2173 | special_sections_f, /* 'f' */ | |
2174 | special_sections_g, /* 'g' */ | |
2175 | special_sections_h, /* 'h' */ | |
2176 | special_sections_i, /* 'i' */ | |
2177 | NULL, /* 'j' */ | |
2178 | NULL, /* 'k' */ | |
2179 | special_sections_l, /* 'l' */ | |
2180 | NULL, /* 'm' */ | |
2181 | special_sections_n, /* 'n' */ | |
2182 | NULL, /* 'o' */ | |
2183 | special_sections_p, /* 'p' */ | |
2184 | NULL, /* 'q' */ | |
2185 | special_sections_r, /* 'r' */ | |
2186 | special_sections_s, /* 's' */ | |
2187 | special_sections_t, /* 't' */ | |
1b315056 CS |
2188 | NULL, /* 'u' */ |
2189 | NULL, /* 'v' */ | |
2190 | NULL, /* 'w' */ | |
2191 | NULL, /* 'x' */ | |
2192 | NULL, /* 'y' */ | |
2193 | special_sections_z /* 'z' */ | |
7f4d3958 L |
2194 | }; |
2195 | ||
551b43fd AM |
2196 | const struct bfd_elf_special_section * |
2197 | _bfd_elf_get_special_section (const char *name, | |
2198 | const struct bfd_elf_special_section *spec, | |
2199 | unsigned int rela) | |
2f89ff8d L |
2200 | { |
2201 | int i; | |
7f4d3958 | 2202 | int len; |
7f4d3958 | 2203 | |
551b43fd | 2204 | len = strlen (name); |
7f4d3958 | 2205 | |
551b43fd | 2206 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2207 | { |
2208 | int suffix_len; | |
551b43fd | 2209 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2210 | |
2211 | if (len < prefix_len) | |
2212 | continue; | |
551b43fd | 2213 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2214 | continue; |
2215 | ||
551b43fd | 2216 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2217 | if (suffix_len <= 0) |
2218 | { | |
2219 | if (name[prefix_len] != 0) | |
2220 | { | |
2221 | if (suffix_len == 0) | |
2222 | continue; | |
2223 | if (name[prefix_len] != '.' | |
2224 | && (suffix_len == -2 | |
551b43fd | 2225 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2226 | continue; |
2227 | } | |
2228 | } | |
2229 | else | |
2230 | { | |
2231 | if (len < prefix_len + suffix_len) | |
2232 | continue; | |
2233 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2234 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2235 | suffix_len) != 0) |
2236 | continue; | |
2237 | } | |
551b43fd | 2238 | return &spec[i]; |
7dcb9820 | 2239 | } |
2f89ff8d L |
2240 | |
2241 | return NULL; | |
2242 | } | |
2243 | ||
7dcb9820 | 2244 | const struct bfd_elf_special_section * |
29ef7005 | 2245 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2246 | { |
551b43fd AM |
2247 | int i; |
2248 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2249 | const struct elf_backend_data *bed; |
2f89ff8d L |
2250 | |
2251 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2252 | if (sec->name == NULL) |
2253 | return NULL; | |
2f89ff8d | 2254 | |
29ef7005 L |
2255 | bed = get_elf_backend_data (abfd); |
2256 | spec = bed->special_sections; | |
2257 | if (spec) | |
2258 | { | |
2259 | spec = _bfd_elf_get_special_section (sec->name, | |
2260 | bed->special_sections, | |
2261 | sec->use_rela_p); | |
2262 | if (spec != NULL) | |
2263 | return spec; | |
2264 | } | |
2265 | ||
551b43fd AM |
2266 | if (sec->name[0] != '.') |
2267 | return NULL; | |
2f89ff8d | 2268 | |
551b43fd | 2269 | i = sec->name[1] - 'b'; |
1b315056 | 2270 | if (i < 0 || i > 'z' - 'b') |
551b43fd AM |
2271 | return NULL; |
2272 | ||
2273 | spec = special_sections[i]; | |
2f89ff8d | 2274 | |
551b43fd AM |
2275 | if (spec == NULL) |
2276 | return NULL; | |
2277 | ||
2278 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2279 | } |
2280 | ||
b34976b6 | 2281 | bfd_boolean |
217aa764 | 2282 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2283 | { |
2284 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2285 | const struct elf_backend_data *bed; |
7dcb9820 | 2286 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2287 | |
f0abc2a1 AM |
2288 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2289 | if (sdata == NULL) | |
2290 | { | |
a50b1753 NC |
2291 | sdata = (struct bfd_elf_section_data *) bfd_zalloc (abfd, |
2292 | sizeof (*sdata)); | |
f0abc2a1 AM |
2293 | if (sdata == NULL) |
2294 | return FALSE; | |
217aa764 | 2295 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2296 | } |
bf572ba0 | 2297 | |
551b43fd AM |
2298 | /* Indicate whether or not this section should use RELA relocations. */ |
2299 | bed = get_elf_backend_data (abfd); | |
2300 | sec->use_rela_p = bed->default_use_rela_p; | |
2301 | ||
e843e0f8 L |
2302 | /* When we read a file, we don't need to set ELF section type and |
2303 | flags. They will be overridden in _bfd_elf_make_section_from_shdr | |
2304 | anyway. We will set ELF section type and flags for all linker | |
2305 | created sections. If user specifies BFD section flags, we will | |
2306 | set ELF section type and flags based on BFD section flags in | |
2307 | elf_fake_sections. */ | |
2308 | if ((!sec->flags && abfd->direction != read_direction) | |
3496cb2a | 2309 | || (sec->flags & SEC_LINKER_CREATED) != 0) |
2f89ff8d | 2310 | { |
551b43fd | 2311 | ssect = (*bed->get_sec_type_attr) (abfd, sec); |
a31501e9 L |
2312 | if (ssect != NULL) |
2313 | { | |
2314 | elf_section_type (sec) = ssect->type; | |
2315 | elf_section_flags (sec) = ssect->attr; | |
2316 | } | |
2f89ff8d L |
2317 | } |
2318 | ||
f592407e | 2319 | return _bfd_generic_new_section_hook (abfd, sec); |
252b5132 RH |
2320 | } |
2321 | ||
2322 | /* Create a new bfd section from an ELF program header. | |
2323 | ||
2324 | Since program segments have no names, we generate a synthetic name | |
2325 | of the form segment<NUM>, where NUM is generally the index in the | |
2326 | program header table. For segments that are split (see below) we | |
2327 | generate the names segment<NUM>a and segment<NUM>b. | |
2328 | ||
2329 | Note that some program segments may have a file size that is different than | |
2330 | (less than) the memory size. All this means is that at execution the | |
2331 | system must allocate the amount of memory specified by the memory size, | |
2332 | but only initialize it with the first "file size" bytes read from the | |
2333 | file. This would occur for example, with program segments consisting | |
2334 | of combined data+bss. | |
2335 | ||
2336 | To handle the above situation, this routine generates TWO bfd sections | |
2337 | for the single program segment. The first has the length specified by | |
2338 | the file size of the segment, and the second has the length specified | |
2339 | by the difference between the two sizes. In effect, the segment is split | |
d5191d0c | 2340 | into its initialized and uninitialized parts. |
252b5132 RH |
2341 | |
2342 | */ | |
2343 | ||
b34976b6 | 2344 | bfd_boolean |
217aa764 AM |
2345 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2346 | Elf_Internal_Phdr *hdr, | |
91d6fa6a | 2347 | int hdr_index, |
a50b1753 | 2348 | const char *type_name) |
252b5132 RH |
2349 | { |
2350 | asection *newsect; | |
2351 | char *name; | |
2352 | char namebuf[64]; | |
d4c88bbb | 2353 | size_t len; |
252b5132 RH |
2354 | int split; |
2355 | ||
2356 | split = ((hdr->p_memsz > 0) | |
2357 | && (hdr->p_filesz > 0) | |
2358 | && (hdr->p_memsz > hdr->p_filesz)); | |
d5191d0c AM |
2359 | |
2360 | if (hdr->p_filesz > 0) | |
252b5132 | 2361 | { |
91d6fa6a | 2362 | sprintf (namebuf, "%s%d%s", type_name, hdr_index, split ? "a" : ""); |
d5191d0c | 2363 | len = strlen (namebuf) + 1; |
a50b1753 | 2364 | name = (char *) bfd_alloc (abfd, len); |
d5191d0c AM |
2365 | if (!name) |
2366 | return FALSE; | |
2367 | memcpy (name, namebuf, len); | |
2368 | newsect = bfd_make_section (abfd, name); | |
2369 | if (newsect == NULL) | |
2370 | return FALSE; | |
2371 | newsect->vma = hdr->p_vaddr; | |
2372 | newsect->lma = hdr->p_paddr; | |
2373 | newsect->size = hdr->p_filesz; | |
2374 | newsect->filepos = hdr->p_offset; | |
2375 | newsect->flags |= SEC_HAS_CONTENTS; | |
2376 | newsect->alignment_power = bfd_log2 (hdr->p_align); | |
2377 | if (hdr->p_type == PT_LOAD) | |
252b5132 | 2378 | { |
d5191d0c AM |
2379 | newsect->flags |= SEC_ALLOC; |
2380 | newsect->flags |= SEC_LOAD; | |
2381 | if (hdr->p_flags & PF_X) | |
2382 | { | |
2383 | /* FIXME: all we known is that it has execute PERMISSION, | |
2384 | may be data. */ | |
2385 | newsect->flags |= SEC_CODE; | |
2386 | } | |
2387 | } | |
2388 | if (!(hdr->p_flags & PF_W)) | |
2389 | { | |
2390 | newsect->flags |= SEC_READONLY; | |
252b5132 | 2391 | } |
252b5132 RH |
2392 | } |
2393 | ||
d5191d0c | 2394 | if (hdr->p_memsz > hdr->p_filesz) |
252b5132 | 2395 | { |
d5191d0c AM |
2396 | bfd_vma align; |
2397 | ||
91d6fa6a | 2398 | sprintf (namebuf, "%s%d%s", type_name, hdr_index, split ? "b" : ""); |
d4c88bbb | 2399 | len = strlen (namebuf) + 1; |
a50b1753 | 2400 | name = (char *) bfd_alloc (abfd, len); |
252b5132 | 2401 | if (!name) |
b34976b6 | 2402 | return FALSE; |
d4c88bbb | 2403 | memcpy (name, namebuf, len); |
252b5132 RH |
2404 | newsect = bfd_make_section (abfd, name); |
2405 | if (newsect == NULL) | |
b34976b6 | 2406 | return FALSE; |
252b5132 RH |
2407 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2408 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2409 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
d5191d0c AM |
2410 | newsect->filepos = hdr->p_offset + hdr->p_filesz; |
2411 | align = newsect->vma & -newsect->vma; | |
2412 | if (align == 0 || align > hdr->p_align) | |
2413 | align = hdr->p_align; | |
2414 | newsect->alignment_power = bfd_log2 (align); | |
252b5132 RH |
2415 | if (hdr->p_type == PT_LOAD) |
2416 | { | |
d5191d0c AM |
2417 | /* Hack for gdb. Segments that have not been modified do |
2418 | not have their contents written to a core file, on the | |
2419 | assumption that a debugger can find the contents in the | |
2420 | executable. We flag this case by setting the fake | |
2421 | section size to zero. Note that "real" bss sections will | |
2422 | always have their contents dumped to the core file. */ | |
2423 | if (bfd_get_format (abfd) == bfd_core) | |
2424 | newsect->size = 0; | |
252b5132 RH |
2425 | newsect->flags |= SEC_ALLOC; |
2426 | if (hdr->p_flags & PF_X) | |
2427 | newsect->flags |= SEC_CODE; | |
2428 | } | |
2429 | if (!(hdr->p_flags & PF_W)) | |
2430 | newsect->flags |= SEC_READONLY; | |
2431 | } | |
2432 | ||
b34976b6 | 2433 | return TRUE; |
252b5132 RH |
2434 | } |
2435 | ||
b34976b6 | 2436 | bfd_boolean |
91d6fa6a | 2437 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int hdr_index) |
20cfcaae | 2438 | { |
9c5bfbb7 | 2439 | const struct elf_backend_data *bed; |
20cfcaae NC |
2440 | |
2441 | switch (hdr->p_type) | |
2442 | { | |
2443 | case PT_NULL: | |
91d6fa6a | 2444 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "null"); |
20cfcaae NC |
2445 | |
2446 | case PT_LOAD: | |
91d6fa6a | 2447 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "load"); |
20cfcaae NC |
2448 | |
2449 | case PT_DYNAMIC: | |
91d6fa6a | 2450 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "dynamic"); |
20cfcaae NC |
2451 | |
2452 | case PT_INTERP: | |
91d6fa6a | 2453 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "interp"); |
20cfcaae NC |
2454 | |
2455 | case PT_NOTE: | |
91d6fa6a | 2456 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "note")) |
b34976b6 | 2457 | return FALSE; |
718175fa | 2458 | if (! elf_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2459 | return FALSE; |
2460 | return TRUE; | |
20cfcaae NC |
2461 | |
2462 | case PT_SHLIB: | |
91d6fa6a | 2463 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "shlib"); |
20cfcaae NC |
2464 | |
2465 | case PT_PHDR: | |
91d6fa6a | 2466 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "phdr"); |
20cfcaae | 2467 | |
811072d8 | 2468 | case PT_GNU_EH_FRAME: |
91d6fa6a | 2469 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, |
811072d8 RM |
2470 | "eh_frame_hdr"); |
2471 | ||
2b05f1b7 | 2472 | case PT_GNU_STACK: |
91d6fa6a | 2473 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "stack"); |
9ee5e499 | 2474 | |
8c37241b | 2475 | case PT_GNU_RELRO: |
91d6fa6a | 2476 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "relro"); |
8c37241b | 2477 | |
20cfcaae | 2478 | default: |
8c1acd09 | 2479 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2480 | bed = get_elf_backend_data (abfd); |
91d6fa6a | 2481 | return bed->elf_backend_section_from_phdr (abfd, hdr, hdr_index, "proc"); |
20cfcaae NC |
2482 | } |
2483 | } | |
2484 | ||
d4730f92 BS |
2485 | /* Return the REL_HDR for SEC, assuming there is only a single one, either |
2486 | REL or RELA. */ | |
2487 | ||
2488 | Elf_Internal_Shdr * | |
2489 | _bfd_elf_single_rel_hdr (asection *sec) | |
2490 | { | |
2491 | if (elf_section_data (sec)->rel.hdr) | |
2492 | { | |
2493 | BFD_ASSERT (elf_section_data (sec)->rela.hdr == NULL); | |
2494 | return elf_section_data (sec)->rel.hdr; | |
2495 | } | |
2496 | else | |
2497 | return elf_section_data (sec)->rela.hdr; | |
2498 | } | |
2499 | ||
2500 | /* Allocate and initialize a section-header for a new reloc section, | |
2501 | containing relocations against ASECT. It is stored in RELDATA. If | |
2502 | USE_RELA_P is TRUE, we use RELA relocations; otherwise, we use REL | |
2503 | relocations. */ | |
23bc299b | 2504 | |
b34976b6 | 2505 | bfd_boolean |
217aa764 | 2506 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
d4730f92 | 2507 | struct bfd_elf_section_reloc_data *reldata, |
217aa764 AM |
2508 | asection *asect, |
2509 | bfd_boolean use_rela_p) | |
23bc299b | 2510 | { |
d4730f92 | 2511 | Elf_Internal_Shdr *rel_hdr; |
23bc299b | 2512 | char *name; |
9c5bfbb7 | 2513 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
d4730f92 BS |
2514 | bfd_size_type amt; |
2515 | ||
2516 | amt = sizeof (Elf_Internal_Shdr); | |
2517 | BFD_ASSERT (reldata->hdr == NULL); | |
2518 | rel_hdr = bfd_zalloc (abfd, amt); | |
2519 | reldata->hdr = rel_hdr; | |
23bc299b | 2520 | |
d4730f92 | 2521 | amt = sizeof ".rela" + strlen (asect->name); |
a50b1753 | 2522 | name = (char *) bfd_alloc (abfd, amt); |
23bc299b | 2523 | if (name == NULL) |
b34976b6 | 2524 | return FALSE; |
23bc299b MM |
2525 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2526 | rel_hdr->sh_name = | |
2b0f7ef9 | 2527 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2528 | FALSE); |
23bc299b | 2529 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2530 | return FALSE; |
23bc299b MM |
2531 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2532 | rel_hdr->sh_entsize = (use_rela_p | |
2533 | ? bed->s->sizeof_rela | |
2534 | : bed->s->sizeof_rel); | |
72de5009 | 2535 | rel_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align; |
23bc299b MM |
2536 | rel_hdr->sh_flags = 0; |
2537 | rel_hdr->sh_addr = 0; | |
2538 | rel_hdr->sh_size = 0; | |
2539 | rel_hdr->sh_offset = 0; | |
2540 | ||
b34976b6 | 2541 | return TRUE; |
23bc299b MM |
2542 | } |
2543 | ||
94be91de JB |
2544 | /* Return the default section type based on the passed in section flags. */ |
2545 | ||
2546 | int | |
2547 | bfd_elf_get_default_section_type (flagword flags) | |
2548 | { | |
2549 | if ((flags & SEC_ALLOC) != 0 | |
2e76e85a | 2550 | && (flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
94be91de JB |
2551 | return SHT_NOBITS; |
2552 | return SHT_PROGBITS; | |
2553 | } | |
2554 | ||
d4730f92 BS |
2555 | struct fake_section_arg |
2556 | { | |
2557 | struct bfd_link_info *link_info; | |
2558 | bfd_boolean failed; | |
2559 | }; | |
2560 | ||
252b5132 RH |
2561 | /* Set up an ELF internal section header for a section. */ |
2562 | ||
252b5132 | 2563 | static void |
d4730f92 | 2564 | elf_fake_sections (bfd *abfd, asection *asect, void *fsarg) |
252b5132 | 2565 | { |
d4730f92 | 2566 | struct fake_section_arg *arg = (struct fake_section_arg *)fsarg; |
9c5bfbb7 | 2567 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
d4730f92 | 2568 | struct bfd_elf_section_data *esd = elf_section_data (asect); |
252b5132 | 2569 | Elf_Internal_Shdr *this_hdr; |
0414f35b | 2570 | unsigned int sh_type; |
252b5132 | 2571 | |
d4730f92 | 2572 | if (arg->failed) |
252b5132 RH |
2573 | { |
2574 | /* We already failed; just get out of the bfd_map_over_sections | |
08a40648 | 2575 | loop. */ |
252b5132 RH |
2576 | return; |
2577 | } | |
2578 | ||
d4730f92 | 2579 | this_hdr = &esd->this_hdr; |
252b5132 | 2580 | |
e57b5356 AM |
2581 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2582 | asect->name, FALSE); | |
2583 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2584 | { |
d4730f92 | 2585 | arg->failed = TRUE; |
252b5132 RH |
2586 | return; |
2587 | } | |
2588 | ||
a4d8e49b | 2589 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
2590 | |
2591 | if ((asect->flags & SEC_ALLOC) != 0 | |
2592 | || asect->user_set_vma) | |
2593 | this_hdr->sh_addr = asect->vma; | |
2594 | else | |
2595 | this_hdr->sh_addr = 0; | |
2596 | ||
2597 | this_hdr->sh_offset = 0; | |
eea6121a | 2598 | this_hdr->sh_size = asect->size; |
252b5132 | 2599 | this_hdr->sh_link = 0; |
72de5009 | 2600 | this_hdr->sh_addralign = (bfd_vma) 1 << asect->alignment_power; |
252b5132 RH |
2601 | /* The sh_entsize and sh_info fields may have been set already by |
2602 | copy_private_section_data. */ | |
2603 | ||
2604 | this_hdr->bfd_section = asect; | |
2605 | this_hdr->contents = NULL; | |
2606 | ||
3cddba1e L |
2607 | /* If the section type is unspecified, we set it based on |
2608 | asect->flags. */ | |
98ece1b3 AM |
2609 | if ((asect->flags & SEC_GROUP) != 0) |
2610 | sh_type = SHT_GROUP; | |
98ece1b3 | 2611 | else |
94be91de | 2612 | sh_type = bfd_elf_get_default_section_type (asect->flags); |
98ece1b3 | 2613 | |
3cddba1e | 2614 | if (this_hdr->sh_type == SHT_NULL) |
98ece1b3 AM |
2615 | this_hdr->sh_type = sh_type; |
2616 | else if (this_hdr->sh_type == SHT_NOBITS | |
2617 | && sh_type == SHT_PROGBITS | |
2618 | && (asect->flags & SEC_ALLOC) != 0) | |
3cddba1e | 2619 | { |
98ece1b3 AM |
2620 | /* Warn if we are changing a NOBITS section to PROGBITS, but |
2621 | allow the link to proceed. This can happen when users link | |
2622 | non-bss input sections to bss output sections, or emit data | |
2623 | to a bss output section via a linker script. */ | |
2624 | (*_bfd_error_handler) | |
58f0869b | 2625 | (_("warning: section `%A' type changed to PROGBITS"), asect); |
98ece1b3 | 2626 | this_hdr->sh_type = sh_type; |
3cddba1e L |
2627 | } |
2628 | ||
2f89ff8d | 2629 | switch (this_hdr->sh_type) |
252b5132 | 2630 | { |
2f89ff8d | 2631 | default: |
2f89ff8d L |
2632 | break; |
2633 | ||
2634 | case SHT_STRTAB: | |
2635 | case SHT_INIT_ARRAY: | |
2636 | case SHT_FINI_ARRAY: | |
2637 | case SHT_PREINIT_ARRAY: | |
2638 | case SHT_NOTE: | |
2639 | case SHT_NOBITS: | |
2640 | case SHT_PROGBITS: | |
2641 | break; | |
2642 | ||
2643 | case SHT_HASH: | |
c7ac6ff8 | 2644 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2645 | break; |
5de3bf90 | 2646 | |
2f89ff8d | 2647 | case SHT_DYNSYM: |
252b5132 | 2648 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2649 | break; |
2650 | ||
2651 | case SHT_DYNAMIC: | |
252b5132 | 2652 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2653 | break; |
2654 | ||
2655 | case SHT_RELA: | |
2656 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2657 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2658 | break; | |
2659 | ||
2660 | case SHT_REL: | |
2661 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2662 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2663 | break; | |
2664 | ||
2665 | case SHT_GNU_versym: | |
252b5132 | 2666 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2667 | break; |
2668 | ||
2669 | case SHT_GNU_verdef: | |
252b5132 RH |
2670 | this_hdr->sh_entsize = 0; |
2671 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2672 | cverdefs. The linker will set cverdefs, but sh_info will be |
2673 | zero. */ | |
252b5132 RH |
2674 | if (this_hdr->sh_info == 0) |
2675 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2676 | else | |
2677 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2678 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2679 | break; |
2680 | ||
2681 | case SHT_GNU_verneed: | |
252b5132 RH |
2682 | this_hdr->sh_entsize = 0; |
2683 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2684 | cverrefs. The linker will set cverrefs, but sh_info will be |
2685 | zero. */ | |
252b5132 RH |
2686 | if (this_hdr->sh_info == 0) |
2687 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2688 | else | |
2689 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2690 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2691 | break; |
2692 | ||
2693 | case SHT_GROUP: | |
1783205a | 2694 | this_hdr->sh_entsize = GRP_ENTRY_SIZE; |
2f89ff8d | 2695 | break; |
fdc90cb4 JJ |
2696 | |
2697 | case SHT_GNU_HASH: | |
2698 | this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4; | |
2699 | break; | |
dbb410c3 | 2700 | } |
252b5132 RH |
2701 | |
2702 | if ((asect->flags & SEC_ALLOC) != 0) | |
2703 | this_hdr->sh_flags |= SHF_ALLOC; | |
2704 | if ((asect->flags & SEC_READONLY) == 0) | |
2705 | this_hdr->sh_flags |= SHF_WRITE; | |
2706 | if ((asect->flags & SEC_CODE) != 0) | |
2707 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2708 | if ((asect->flags & SEC_MERGE) != 0) |
2709 | { | |
2710 | this_hdr->sh_flags |= SHF_MERGE; | |
2711 | this_hdr->sh_entsize = asect->entsize; | |
2712 | if ((asect->flags & SEC_STRINGS) != 0) | |
2713 | this_hdr->sh_flags |= SHF_STRINGS; | |
2714 | } | |
1126897b | 2715 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2716 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2717 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2718 | { |
2719 | this_hdr->sh_flags |= SHF_TLS; | |
3a800eb9 AM |
2720 | if (asect->size == 0 |
2721 | && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
704afa60 | 2722 | { |
3a800eb9 | 2723 | struct bfd_link_order *o = asect->map_tail.link_order; |
b34976b6 | 2724 | |
704afa60 | 2725 | this_hdr->sh_size = 0; |
3a800eb9 AM |
2726 | if (o != NULL) |
2727 | { | |
704afa60 | 2728 | this_hdr->sh_size = o->offset + o->size; |
3a800eb9 AM |
2729 | if (this_hdr->sh_size != 0) |
2730 | this_hdr->sh_type = SHT_NOBITS; | |
2731 | } | |
704afa60 JJ |
2732 | } |
2733 | } | |
18ae9cc1 L |
2734 | if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE) |
2735 | this_hdr->sh_flags |= SHF_EXCLUDE; | |
252b5132 | 2736 | |
d4730f92 BS |
2737 | /* If the section has relocs, set up a section header for the |
2738 | SHT_REL[A] section. If two relocation sections are required for | |
2739 | this section, it is up to the processor-specific back-end to | |
2740 | create the other. */ | |
2741 | if ((asect->flags & SEC_RELOC) != 0) | |
2742 | { | |
2743 | /* When doing a relocatable link, create both REL and RELA sections if | |
2744 | needed. */ | |
2745 | if (arg->link_info | |
2746 | /* Do the normal setup if we wouldn't create any sections here. */ | |
2747 | && esd->rel.count + esd->rela.count > 0 | |
2748 | && (arg->link_info->relocatable || arg->link_info->emitrelocations)) | |
2749 | { | |
2750 | if (esd->rel.count && esd->rel.hdr == NULL | |
2751 | && !_bfd_elf_init_reloc_shdr (abfd, &esd->rel, asect, FALSE)) | |
2752 | { | |
2753 | arg->failed = TRUE; | |
2754 | return; | |
2755 | } | |
2756 | if (esd->rela.count && esd->rela.hdr == NULL | |
2757 | && !_bfd_elf_init_reloc_shdr (abfd, &esd->rela, asect, TRUE)) | |
2758 | { | |
2759 | arg->failed = TRUE; | |
2760 | return; | |
2761 | } | |
2762 | } | |
2763 | else if (!_bfd_elf_init_reloc_shdr (abfd, | |
2764 | (asect->use_rela_p | |
2765 | ? &esd->rela : &esd->rel), | |
2766 | asect, | |
2767 | asect->use_rela_p)) | |
2768 | arg->failed = TRUE; | |
2769 | } | |
2770 | ||
252b5132 | 2771 | /* Check for processor-specific section types. */ |
0414f35b | 2772 | sh_type = this_hdr->sh_type; |
e1fddb6b AO |
2773 | if (bed->elf_backend_fake_sections |
2774 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
d4730f92 | 2775 | arg->failed = TRUE; |
252b5132 | 2776 | |
42bb2e33 | 2777 | if (sh_type == SHT_NOBITS && asect->size != 0) |
0414f35b AM |
2778 | { |
2779 | /* Don't change the header type from NOBITS if we are being | |
42bb2e33 | 2780 | called for objcopy --only-keep-debug. */ |
0414f35b AM |
2781 | this_hdr->sh_type = sh_type; |
2782 | } | |
252b5132 RH |
2783 | } |
2784 | ||
bcacc0f5 AM |
2785 | /* Fill in the contents of a SHT_GROUP section. Called from |
2786 | _bfd_elf_compute_section_file_positions for gas, objcopy, and | |
2787 | when ELF targets use the generic linker, ld. Called for ld -r | |
2788 | from bfd_elf_final_link. */ | |
dbb410c3 | 2789 | |
1126897b | 2790 | void |
217aa764 | 2791 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2792 | { |
a50b1753 | 2793 | bfd_boolean *failedptr = (bfd_boolean *) failedptrarg; |
9dce4196 | 2794 | asection *elt, *first; |
dbb410c3 | 2795 | unsigned char *loc; |
b34976b6 | 2796 | bfd_boolean gas; |
dbb410c3 | 2797 | |
7e4111ad L |
2798 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2799 | elfxx-ia64.c. */ | |
2800 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2801 | || *failedptr) |
2802 | return; | |
2803 | ||
bcacc0f5 AM |
2804 | if (elf_section_data (sec)->this_hdr.sh_info == 0) |
2805 | { | |
2806 | unsigned long symindx = 0; | |
2807 | ||
2808 | /* elf_group_id will have been set up by objcopy and the | |
2809 | generic linker. */ | |
2810 | if (elf_group_id (sec) != NULL) | |
2811 | symindx = elf_group_id (sec)->udata.i; | |
1126897b | 2812 | |
bcacc0f5 AM |
2813 | if (symindx == 0) |
2814 | { | |
2815 | /* If called from the assembler, swap_out_syms will have set up | |
2816 | elf_section_syms. */ | |
2817 | BFD_ASSERT (elf_section_syms (abfd) != NULL); | |
2818 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2819 | } | |
2820 | elf_section_data (sec)->this_hdr.sh_info = symindx; | |
2821 | } | |
2822 | else if (elf_section_data (sec)->this_hdr.sh_info == (unsigned int) -2) | |
1126897b | 2823 | { |
bcacc0f5 AM |
2824 | /* The ELF backend linker sets sh_info to -2 when the group |
2825 | signature symbol is global, and thus the index can't be | |
2826 | set until all local symbols are output. */ | |
2827 | asection *igroup = elf_sec_group (elf_next_in_group (sec)); | |
2828 | struct bfd_elf_section_data *sec_data = elf_section_data (igroup); | |
2829 | unsigned long symndx = sec_data->this_hdr.sh_info; | |
2830 | unsigned long extsymoff = 0; | |
2831 | struct elf_link_hash_entry *h; | |
2832 | ||
2833 | if (!elf_bad_symtab (igroup->owner)) | |
2834 | { | |
2835 | Elf_Internal_Shdr *symtab_hdr; | |
2836 | ||
2837 | symtab_hdr = &elf_tdata (igroup->owner)->symtab_hdr; | |
2838 | extsymoff = symtab_hdr->sh_info; | |
2839 | } | |
2840 | h = elf_sym_hashes (igroup->owner)[symndx - extsymoff]; | |
2841 | while (h->root.type == bfd_link_hash_indirect | |
2842 | || h->root.type == bfd_link_hash_warning) | |
2843 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2844 | ||
2845 | elf_section_data (sec)->this_hdr.sh_info = h->indx; | |
1126897b | 2846 | } |
dbb410c3 | 2847 | |
1126897b | 2848 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2849 | gas = TRUE; |
dbb410c3 AM |
2850 | if (sec->contents == NULL) |
2851 | { | |
b34976b6 | 2852 | gas = FALSE; |
a50b1753 | 2853 | sec->contents = (unsigned char *) bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2854 | |
2855 | /* Arrange for the section to be written out. */ | |
2856 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2857 | if (sec->contents == NULL) |
2858 | { | |
b34976b6 | 2859 | *failedptr = TRUE; |
dbb410c3 AM |
2860 | return; |
2861 | } | |
2862 | } | |
2863 | ||
eea6121a | 2864 | loc = sec->contents + sec->size; |
dbb410c3 | 2865 | |
9dce4196 AM |
2866 | /* Get the pointer to the first section in the group that gas |
2867 | squirreled away here. objcopy arranges for this to be set to the | |
2868 | start of the input section group. */ | |
2869 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2870 | |
2871 | /* First element is a flag word. Rest of section is elf section | |
2872 | indices for all the sections of the group. Write them backwards | |
2873 | just to keep the group in the same order as given in .section | |
2874 | directives, not that it matters. */ | |
2875 | while (elt != NULL) | |
2876 | { | |
9dce4196 | 2877 | asection *s; |
9dce4196 | 2878 | |
9dce4196 | 2879 | s = elt; |
415f38a6 AM |
2880 | if (!gas) |
2881 | s = s->output_section; | |
2882 | if (s != NULL | |
2883 | && !bfd_is_abs_section (s)) | |
01e1a5bc | 2884 | { |
415f38a6 AM |
2885 | unsigned int idx = elf_section_data (s)->this_idx; |
2886 | ||
01e1a5bc | 2887 | loc -= 4; |
01e1a5bc NC |
2888 | H_PUT_32 (abfd, idx, loc); |
2889 | } | |
945906ff | 2890 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2891 | if (elt == first) |
2892 | break; | |
dbb410c3 AM |
2893 | } |
2894 | ||
3d7f7666 | 2895 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2896 | abort (); |
dbb410c3 | 2897 | |
9dce4196 | 2898 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2899 | } |
2900 | ||
252b5132 RH |
2901 | /* Assign all ELF section numbers. The dummy first section is handled here |
2902 | too. The link/info pointers for the standard section types are filled | |
2903 | in here too, while we're at it. */ | |
2904 | ||
b34976b6 | 2905 | static bfd_boolean |
da9f89d4 | 2906 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2907 | { |
2908 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2909 | asection *sec; | |
2b0f7ef9 | 2910 | unsigned int section_number, secn; |
252b5132 | 2911 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 2912 | struct bfd_elf_section_data *d; |
3516e984 | 2913 | bfd_boolean need_symtab; |
252b5132 RH |
2914 | |
2915 | section_number = 1; | |
2916 | ||
2b0f7ef9 JJ |
2917 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2918 | ||
da9f89d4 L |
2919 | /* SHT_GROUP sections are in relocatable files only. */ |
2920 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2921 | { |
da9f89d4 | 2922 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 2923 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 2924 | { |
5daa8fe7 | 2925 | d = elf_section_data (sec); |
da9f89d4 L |
2926 | |
2927 | if (d->this_hdr.sh_type == SHT_GROUP) | |
08a40648 | 2928 | { |
5daa8fe7 | 2929 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
2930 | { |
2931 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 2932 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 2933 | abfd->section_count--; |
da9f89d4 | 2934 | } |
08a40648 | 2935 | else |
4fbb74a6 | 2936 | d->this_idx = section_number++; |
da9f89d4 | 2937 | } |
47cc2cf5 PB |
2938 | } |
2939 | } | |
2940 | ||
2941 | for (sec = abfd->sections; sec; sec = sec->next) | |
2942 | { | |
2943 | d = elf_section_data (sec); | |
2944 | ||
2945 | if (d->this_hdr.sh_type != SHT_GROUP) | |
4fbb74a6 | 2946 | d->this_idx = section_number++; |
2b0f7ef9 | 2947 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
d4730f92 | 2948 | if (d->rel.hdr) |
2b0f7ef9 | 2949 | { |
d4730f92 BS |
2950 | d->rel.idx = section_number++; |
2951 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel.hdr->sh_name); | |
2b0f7ef9 | 2952 | } |
d4730f92 BS |
2953 | else |
2954 | d->rel.idx = 0; | |
23bc299b | 2955 | |
d4730f92 | 2956 | if (d->rela.hdr) |
2b0f7ef9 | 2957 | { |
d4730f92 BS |
2958 | d->rela.idx = section_number++; |
2959 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rela.hdr->sh_name); | |
2b0f7ef9 | 2960 | } |
23bc299b | 2961 | else |
d4730f92 | 2962 | d->rela.idx = 0; |
252b5132 RH |
2963 | } |
2964 | ||
2965 | t->shstrtab_section = section_number++; | |
2b0f7ef9 | 2966 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2967 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 | 2968 | |
3516e984 L |
2969 | need_symtab = (bfd_get_symcount (abfd) > 0 |
2970 | || (link_info == NULL | |
2971 | && ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC)) | |
2972 | == HAS_RELOC))); | |
2973 | if (need_symtab) | |
252b5132 RH |
2974 | { |
2975 | t->symtab_section = section_number++; | |
2b0f7ef9 | 2976 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
4fbb74a6 | 2977 | if (section_number > ((SHN_LORESERVE - 2) & 0xFFFF)) |
9ad5cbcf | 2978 | { |
9ad5cbcf AM |
2979 | t->symtab_shndx_section = section_number++; |
2980 | t->symtab_shndx_hdr.sh_name | |
2981 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 2982 | ".symtab_shndx", FALSE); |
9ad5cbcf | 2983 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 2984 | return FALSE; |
9ad5cbcf | 2985 | } |
252b5132 | 2986 | t->strtab_section = section_number++; |
2b0f7ef9 | 2987 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
2988 | } |
2989 | ||
2b0f7ef9 JJ |
2990 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
2991 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
2992 | |
2993 | elf_numsections (abfd) = section_number; | |
252b5132 RH |
2994 | elf_elfheader (abfd)->e_shnum = section_number; |
2995 | ||
2996 | /* Set up the list of section header pointers, in agreement with the | |
2997 | indices. */ | |
a50b1753 NC |
2998 | i_shdrp = (Elf_Internal_Shdr **) bfd_zalloc2 (abfd, section_number, |
2999 | sizeof (Elf_Internal_Shdr *)); | |
252b5132 | 3000 | if (i_shdrp == NULL) |
b34976b6 | 3001 | return FALSE; |
252b5132 | 3002 | |
a50b1753 NC |
3003 | i_shdrp[0] = (Elf_Internal_Shdr *) bfd_zalloc (abfd, |
3004 | sizeof (Elf_Internal_Shdr)); | |
252b5132 RH |
3005 | if (i_shdrp[0] == NULL) |
3006 | { | |
3007 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 3008 | return FALSE; |
252b5132 | 3009 | } |
252b5132 RH |
3010 | |
3011 | elf_elfsections (abfd) = i_shdrp; | |
3012 | ||
3013 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
3516e984 | 3014 | if (need_symtab) |
252b5132 RH |
3015 | { |
3016 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
4fbb74a6 | 3017 | if (elf_numsections (abfd) > (SHN_LORESERVE & 0xFFFF)) |
9ad5cbcf AM |
3018 | { |
3019 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
3020 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
3021 | } | |
252b5132 RH |
3022 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
3023 | t->symtab_hdr.sh_link = t->strtab_section; | |
3024 | } | |
38ce5b11 | 3025 | |
252b5132 RH |
3026 | for (sec = abfd->sections; sec; sec = sec->next) |
3027 | { | |
252b5132 RH |
3028 | asection *s; |
3029 | const char *name; | |
3030 | ||
91d6fa6a NC |
3031 | d = elf_section_data (sec); |
3032 | ||
252b5132 | 3033 | i_shdrp[d->this_idx] = &d->this_hdr; |
d4730f92 BS |
3034 | if (d->rel.idx != 0) |
3035 | i_shdrp[d->rel.idx] = d->rel.hdr; | |
3036 | if (d->rela.idx != 0) | |
3037 | i_shdrp[d->rela.idx] = d->rela.hdr; | |
252b5132 RH |
3038 | |
3039 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
3040 | ||
3041 | /* sh_link of a reloc section is the section index of the symbol | |
3042 | table. sh_info is the section index of the section to which | |
3043 | the relocation entries apply. */ | |
d4730f92 | 3044 | if (d->rel.idx != 0) |
252b5132 | 3045 | { |
d4730f92 BS |
3046 | d->rel.hdr->sh_link = t->symtab_section; |
3047 | d->rel.hdr->sh_info = d->this_idx; | |
252b5132 | 3048 | } |
d4730f92 | 3049 | if (d->rela.idx != 0) |
23bc299b | 3050 | { |
d4730f92 BS |
3051 | d->rela.hdr->sh_link = t->symtab_section; |
3052 | d->rela.hdr->sh_info = d->this_idx; | |
23bc299b | 3053 | } |
252b5132 | 3054 | |
38ce5b11 L |
3055 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
3056 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
3057 | { | |
3058 | s = elf_linked_to_section (sec); | |
3059 | if (s) | |
38ce5b11 | 3060 | { |
f2876037 | 3061 | /* elf_linked_to_section points to the input section. */ |
ccd2ec6a | 3062 | if (link_info != NULL) |
38ce5b11 | 3063 | { |
f2876037 | 3064 | /* Check discarded linkonce section. */ |
ccd2ec6a | 3065 | if (elf_discarded_section (s)) |
38ce5b11 | 3066 | { |
ccd2ec6a L |
3067 | asection *kept; |
3068 | (*_bfd_error_handler) | |
3069 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
3070 | abfd, d->this_hdr.bfd_section, | |
3071 | s, s->owner); | |
3072 | /* Point to the kept section if it has the same | |
3073 | size as the discarded one. */ | |
c0f00686 | 3074 | kept = _bfd_elf_check_kept_section (s, link_info); |
ccd2ec6a | 3075 | if (kept == NULL) |
185d09ad | 3076 | { |
ccd2ec6a L |
3077 | bfd_set_error (bfd_error_bad_value); |
3078 | return FALSE; | |
185d09ad | 3079 | } |
ccd2ec6a | 3080 | s = kept; |
38ce5b11 | 3081 | } |
e424ecc8 | 3082 | |
ccd2ec6a L |
3083 | s = s->output_section; |
3084 | BFD_ASSERT (s != NULL); | |
38ce5b11 | 3085 | } |
f2876037 L |
3086 | else |
3087 | { | |
3088 | /* Handle objcopy. */ | |
3089 | if (s->output_section == NULL) | |
3090 | { | |
3091 | (*_bfd_error_handler) | |
3092 | (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"), | |
3093 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
3094 | bfd_set_error (bfd_error_bad_value); | |
3095 | return FALSE; | |
3096 | } | |
3097 | s = s->output_section; | |
3098 | } | |
ccd2ec6a L |
3099 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; |
3100 | } | |
3101 | else | |
3102 | { | |
3103 | /* PR 290: | |
3104 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
3105 | SHF_LINK_ORDER. But it doesn't set the sh_link or | |
3106 | sh_info fields. Hence we could get the situation | |
08a40648 | 3107 | where s is NULL. */ |
ccd2ec6a L |
3108 | const struct elf_backend_data *bed |
3109 | = get_elf_backend_data (abfd); | |
3110 | if (bed->link_order_error_handler) | |
3111 | bed->link_order_error_handler | |
3112 | (_("%B: warning: sh_link not set for section `%A'"), | |
3113 | abfd, sec); | |
38ce5b11 L |
3114 | } |
3115 | } | |
3116 | ||
252b5132 RH |
3117 | switch (d->this_hdr.sh_type) |
3118 | { | |
3119 | case SHT_REL: | |
3120 | case SHT_RELA: | |
3121 | /* A reloc section which we are treating as a normal BFD | |
3122 | section. sh_link is the section index of the symbol | |
3123 | table. sh_info is the section index of the section to | |
3124 | which the relocation entries apply. We assume that an | |
3125 | allocated reloc section uses the dynamic symbol table. | |
3126 | FIXME: How can we be sure? */ | |
3127 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3128 | if (s != NULL) | |
3129 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3130 | ||
3131 | /* We look up the section the relocs apply to by name. */ | |
3132 | name = sec->name; | |
3133 | if (d->this_hdr.sh_type == SHT_REL) | |
3134 | name += 4; | |
3135 | else | |
3136 | name += 5; | |
3137 | s = bfd_get_section_by_name (abfd, name); | |
3138 | if (s != NULL) | |
3139 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3140 | break; | |
3141 | ||
3142 | case SHT_STRTAB: | |
3143 | /* We assume that a section named .stab*str is a stabs | |
3144 | string section. We look for a section with the same name | |
3145 | but without the trailing ``str'', and set its sh_link | |
3146 | field to point to this section. */ | |
0112cd26 | 3147 | if (CONST_STRNEQ (sec->name, ".stab") |
252b5132 RH |
3148 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) |
3149 | { | |
3150 | size_t len; | |
3151 | char *alc; | |
3152 | ||
3153 | len = strlen (sec->name); | |
a50b1753 | 3154 | alc = (char *) bfd_malloc (len - 2); |
252b5132 | 3155 | if (alc == NULL) |
b34976b6 | 3156 | return FALSE; |
d4c88bbb | 3157 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3158 | alc[len - 3] = '\0'; |
3159 | s = bfd_get_section_by_name (abfd, alc); | |
3160 | free (alc); | |
3161 | if (s != NULL) | |
3162 | { | |
3163 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3164 | ||
3165 | /* This is a .stab section. */ | |
0594c12d AM |
3166 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3167 | elf_section_data (s)->this_hdr.sh_entsize | |
3168 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3169 | } |
3170 | } | |
3171 | break; | |
3172 | ||
3173 | case SHT_DYNAMIC: | |
3174 | case SHT_DYNSYM: | |
3175 | case SHT_GNU_verneed: | |
3176 | case SHT_GNU_verdef: | |
3177 | /* sh_link is the section header index of the string table | |
3178 | used for the dynamic entries, or the symbol table, or the | |
3179 | version strings. */ | |
3180 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3181 | if (s != NULL) | |
3182 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3183 | break; | |
3184 | ||
7f1204bb JJ |
3185 | case SHT_GNU_LIBLIST: |
3186 | /* sh_link is the section header index of the prelink library | |
08a40648 AM |
3187 | list used for the dynamic entries, or the symbol table, or |
3188 | the version strings. */ | |
7f1204bb JJ |
3189 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) |
3190 | ? ".dynstr" : ".gnu.libstr"); | |
3191 | if (s != NULL) | |
3192 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3193 | break; | |
3194 | ||
252b5132 | 3195 | case SHT_HASH: |
fdc90cb4 | 3196 | case SHT_GNU_HASH: |
252b5132 RH |
3197 | case SHT_GNU_versym: |
3198 | /* sh_link is the section header index of the symbol table | |
3199 | this hash table or version table is for. */ | |
3200 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3201 | if (s != NULL) | |
3202 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3203 | break; | |
dbb410c3 AM |
3204 | |
3205 | case SHT_GROUP: | |
3206 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3207 | } |
3208 | } | |
3209 | ||
2b0f7ef9 | 3210 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3211 | if (i_shdrp[secn] == NULL) |
3212 | i_shdrp[secn] = i_shdrp[0]; | |
3213 | else | |
3214 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3215 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3216 | return TRUE; |
252b5132 RH |
3217 | } |
3218 | ||
3219 | /* Map symbol from it's internal number to the external number, moving | |
3220 | all local symbols to be at the head of the list. */ | |
3221 | ||
5372391b | 3222 | static bfd_boolean |
217aa764 | 3223 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3224 | { |
3225 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3226 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3227 | if (bed->elf_backend_sym_is_global) |
3228 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 | 3229 | |
e47bf690 | 3230 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0 |
252b5132 RH |
3231 | || bfd_is_und_section (bfd_get_section (sym)) |
3232 | || bfd_is_com_section (bfd_get_section (sym))); | |
3233 | } | |
3234 | ||
5372391b | 3235 | /* Don't output section symbols for sections that are not going to be |
0f0a5e58 | 3236 | output. */ |
5372391b AM |
3237 | |
3238 | static bfd_boolean | |
3239 | ignore_section_sym (bfd *abfd, asymbol *sym) | |
3240 | { | |
3241 | return ((sym->flags & BSF_SECTION_SYM) != 0 | |
0f0a5e58 AM |
3242 | && !(sym->section->owner == abfd |
3243 | || (sym->section->output_section->owner == abfd | |
3244 | && sym->section->output_offset == 0))); | |
5372391b AM |
3245 | } |
3246 | ||
b34976b6 | 3247 | static bfd_boolean |
217aa764 | 3248 | elf_map_symbols (bfd *abfd) |
252b5132 | 3249 | { |
dc810e39 | 3250 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3251 | asymbol **syms = bfd_get_outsymbols (abfd); |
3252 | asymbol **sect_syms; | |
dc810e39 AM |
3253 | unsigned int num_locals = 0; |
3254 | unsigned int num_globals = 0; | |
3255 | unsigned int num_locals2 = 0; | |
3256 | unsigned int num_globals2 = 0; | |
252b5132 | 3257 | int max_index = 0; |
dc810e39 | 3258 | unsigned int idx; |
252b5132 RH |
3259 | asection *asect; |
3260 | asymbol **new_syms; | |
252b5132 RH |
3261 | |
3262 | #ifdef DEBUG | |
3263 | fprintf (stderr, "elf_map_symbols\n"); | |
3264 | fflush (stderr); | |
3265 | #endif | |
3266 | ||
252b5132 RH |
3267 | for (asect = abfd->sections; asect; asect = asect->next) |
3268 | { | |
3269 | if (max_index < asect->index) | |
3270 | max_index = asect->index; | |
3271 | } | |
3272 | ||
3273 | max_index++; | |
a50b1753 | 3274 | sect_syms = (asymbol **) bfd_zalloc2 (abfd, max_index, sizeof (asymbol *)); |
252b5132 | 3275 | if (sect_syms == NULL) |
b34976b6 | 3276 | return FALSE; |
252b5132 | 3277 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3278 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3279 | |
079e9a2f AM |
3280 | /* Init sect_syms entries for any section symbols we have already |
3281 | decided to output. */ | |
252b5132 RH |
3282 | for (idx = 0; idx < symcount; idx++) |
3283 | { | |
dc810e39 | 3284 | asymbol *sym = syms[idx]; |
c044fabd | 3285 | |
252b5132 | 3286 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
0f0a5e58 | 3287 | && sym->value == 0 |
5372391b | 3288 | && !ignore_section_sym (abfd, sym)) |
252b5132 | 3289 | { |
5372391b | 3290 | asection *sec = sym->section; |
252b5132 | 3291 | |
5372391b AM |
3292 | if (sec->owner != abfd) |
3293 | sec = sec->output_section; | |
252b5132 | 3294 | |
5372391b | 3295 | sect_syms[sec->index] = syms[idx]; |
252b5132 RH |
3296 | } |
3297 | } | |
3298 | ||
252b5132 RH |
3299 | /* Classify all of the symbols. */ |
3300 | for (idx = 0; idx < symcount; idx++) | |
3301 | { | |
5372391b AM |
3302 | if (ignore_section_sym (abfd, syms[idx])) |
3303 | continue; | |
252b5132 RH |
3304 | if (!sym_is_global (abfd, syms[idx])) |
3305 | num_locals++; | |
3306 | else | |
3307 | num_globals++; | |
3308 | } | |
079e9a2f | 3309 | |
5372391b | 3310 | /* We will be adding a section symbol for each normal BFD section. Most |
079e9a2f AM |
3311 | sections will already have a section symbol in outsymbols, but |
3312 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3313 | at least in that case. */ | |
252b5132 RH |
3314 | for (asect = abfd->sections; asect; asect = asect->next) |
3315 | { | |
079e9a2f | 3316 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3317 | { |
079e9a2f | 3318 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3319 | num_locals++; |
3320 | else | |
3321 | num_globals++; | |
252b5132 RH |
3322 | } |
3323 | } | |
3324 | ||
3325 | /* Now sort the symbols so the local symbols are first. */ | |
a50b1753 NC |
3326 | new_syms = (asymbol **) bfd_alloc2 (abfd, num_locals + num_globals, |
3327 | sizeof (asymbol *)); | |
dc810e39 | 3328 | |
252b5132 | 3329 | if (new_syms == NULL) |
b34976b6 | 3330 | return FALSE; |
252b5132 RH |
3331 | |
3332 | for (idx = 0; idx < symcount; idx++) | |
3333 | { | |
3334 | asymbol *sym = syms[idx]; | |
dc810e39 | 3335 | unsigned int i; |
252b5132 | 3336 | |
5372391b AM |
3337 | if (ignore_section_sym (abfd, sym)) |
3338 | continue; | |
252b5132 RH |
3339 | if (!sym_is_global (abfd, sym)) |
3340 | i = num_locals2++; | |
3341 | else | |
3342 | i = num_locals + num_globals2++; | |
3343 | new_syms[i] = sym; | |
3344 | sym->udata.i = i + 1; | |
3345 | } | |
3346 | for (asect = abfd->sections; asect; asect = asect->next) | |
3347 | { | |
079e9a2f | 3348 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3349 | { |
079e9a2f | 3350 | asymbol *sym = asect->symbol; |
dc810e39 | 3351 | unsigned int i; |
252b5132 | 3352 | |
079e9a2f | 3353 | sect_syms[asect->index] = sym; |
252b5132 RH |
3354 | if (!sym_is_global (abfd, sym)) |
3355 | i = num_locals2++; | |
3356 | else | |
3357 | i = num_locals + num_globals2++; | |
3358 | new_syms[i] = sym; | |
3359 | sym->udata.i = i + 1; | |
3360 | } | |
3361 | } | |
3362 | ||
3363 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3364 | ||
3365 | elf_num_locals (abfd) = num_locals; | |
3366 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3367 | return TRUE; |
252b5132 RH |
3368 | } |
3369 | ||
3370 | /* Align to the maximum file alignment that could be required for any | |
3371 | ELF data structure. */ | |
3372 | ||
268b6b39 | 3373 | static inline file_ptr |
217aa764 | 3374 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3375 | { |
3376 | return (off + align - 1) & ~(align - 1); | |
3377 | } | |
3378 | ||
3379 | /* Assign a file position to a section, optionally aligning to the | |
3380 | required section alignment. */ | |
3381 | ||
217aa764 AM |
3382 | file_ptr |
3383 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3384 | file_ptr offset, | |
3385 | bfd_boolean align) | |
252b5132 | 3386 | { |
72de5009 AM |
3387 | if (align && i_shdrp->sh_addralign > 1) |
3388 | offset = BFD_ALIGN (offset, i_shdrp->sh_addralign); | |
252b5132 RH |
3389 | i_shdrp->sh_offset = offset; |
3390 | if (i_shdrp->bfd_section != NULL) | |
3391 | i_shdrp->bfd_section->filepos = offset; | |
3392 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3393 | offset += i_shdrp->sh_size; | |
3394 | return offset; | |
3395 | } | |
3396 | ||
3397 | /* Compute the file positions we are going to put the sections at, and | |
3398 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3399 | is not NULL, this is being called by the ELF backend linker. */ | |
3400 | ||
b34976b6 | 3401 | bfd_boolean |
217aa764 AM |
3402 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3403 | struct bfd_link_info *link_info) | |
252b5132 | 3404 | { |
9c5bfbb7 | 3405 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
d4730f92 | 3406 | struct fake_section_arg fsargs; |
b34976b6 | 3407 | bfd_boolean failed; |
4b6c0f2f | 3408 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 | 3409 | Elf_Internal_Shdr *shstrtab_hdr; |
3516e984 | 3410 | bfd_boolean need_symtab; |
252b5132 RH |
3411 | |
3412 | if (abfd->output_has_begun) | |
b34976b6 | 3413 | return TRUE; |
252b5132 RH |
3414 | |
3415 | /* Do any elf backend specific processing first. */ | |
3416 | if (bed->elf_backend_begin_write_processing) | |
3417 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3418 | ||
3419 | if (! prep_headers (abfd)) | |
b34976b6 | 3420 | return FALSE; |
252b5132 | 3421 | |
e6c51ed4 NC |
3422 | /* Post process the headers if necessary. */ |
3423 | if (bed->elf_backend_post_process_headers) | |
3424 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3425 | ||
d4730f92 BS |
3426 | fsargs.failed = FALSE; |
3427 | fsargs.link_info = link_info; | |
3428 | bfd_map_over_sections (abfd, elf_fake_sections, &fsargs); | |
3429 | if (fsargs.failed) | |
b34976b6 | 3430 | return FALSE; |
252b5132 | 3431 | |
da9f89d4 | 3432 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3433 | return FALSE; |
252b5132 RH |
3434 | |
3435 | /* The backend linker builds symbol table information itself. */ | |
3516e984 L |
3436 | need_symtab = (link_info == NULL |
3437 | && (bfd_get_symcount (abfd) > 0 | |
3438 | || ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC)) | |
3439 | == HAS_RELOC))); | |
3440 | if (need_symtab) | |
252b5132 RH |
3441 | { |
3442 | /* Non-zero if doing a relocatable link. */ | |
3443 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3444 | ||
3445 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3446 | return FALSE; |
252b5132 RH |
3447 | } |
3448 | ||
d4730f92 | 3449 | failed = FALSE; |
1126897b | 3450 | if (link_info == NULL) |
dbb410c3 | 3451 | { |
1126897b | 3452 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3453 | if (failed) |
b34976b6 | 3454 | return FALSE; |
dbb410c3 AM |
3455 | } |
3456 | ||
252b5132 RH |
3457 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3458 | /* sh_name was set in prep_headers. */ | |
3459 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3460 | shstrtab_hdr->sh_flags = 0; | |
3461 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3462 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3463 | shstrtab_hdr->sh_entsize = 0; |
3464 | shstrtab_hdr->sh_link = 0; | |
3465 | shstrtab_hdr->sh_info = 0; | |
3466 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3467 | shstrtab_hdr->sh_addralign = 1; | |
3468 | ||
c84fca4d | 3469 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3470 | return FALSE; |
252b5132 | 3471 | |
3516e984 | 3472 | if (need_symtab) |
252b5132 RH |
3473 | { |
3474 | file_ptr off; | |
3475 | Elf_Internal_Shdr *hdr; | |
3476 | ||
3477 | off = elf_tdata (abfd)->next_file_pos; | |
3478 | ||
3479 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3480 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3481 | |
9ad5cbcf AM |
3482 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3483 | if (hdr->sh_size != 0) | |
b34976b6 | 3484 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3485 | |
252b5132 | 3486 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3487 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3488 | |
3489 | elf_tdata (abfd)->next_file_pos = off; | |
3490 | ||
3491 | /* Now that we know where the .strtab section goes, write it | |
08a40648 | 3492 | out. */ |
252b5132 RH |
3493 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
3494 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3495 | return FALSE; |
252b5132 RH |
3496 | _bfd_stringtab_free (strtab); |
3497 | } | |
3498 | ||
b34976b6 | 3499 | abfd->output_has_begun = TRUE; |
252b5132 | 3500 | |
b34976b6 | 3501 | return TRUE; |
252b5132 RH |
3502 | } |
3503 | ||
8ded5a0f AM |
3504 | /* Make an initial estimate of the size of the program header. If we |
3505 | get the number wrong here, we'll redo section placement. */ | |
3506 | ||
3507 | static bfd_size_type | |
3508 | get_program_header_size (bfd *abfd, struct bfd_link_info *info) | |
3509 | { | |
3510 | size_t segs; | |
3511 | asection *s; | |
2b05f1b7 | 3512 | const struct elf_backend_data *bed; |
8ded5a0f AM |
3513 | |
3514 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
3515 | and one for data. */ | |
3516 | segs = 2; | |
3517 | ||
3518 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3519 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3520 | { | |
3521 | /* If we have a loadable interpreter section, we need a | |
3522 | PT_INTERP segment. In this case, assume we also need a | |
3523 | PT_PHDR segment, although that may not be true for all | |
3524 | targets. */ | |
3525 | segs += 2; | |
3526 | } | |
3527 | ||
3528 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
3529 | { | |
3530 | /* We need a PT_DYNAMIC segment. */ | |
3531 | ++segs; | |
f210dcff | 3532 | } |
08a40648 | 3533 | |
ceae84aa | 3534 | if (info != NULL && info->relro) |
f210dcff L |
3535 | { |
3536 | /* We need a PT_GNU_RELRO segment. */ | |
3537 | ++segs; | |
8ded5a0f AM |
3538 | } |
3539 | ||
3540 | if (elf_tdata (abfd)->eh_frame_hdr) | |
3541 | { | |
3542 | /* We need a PT_GNU_EH_FRAME segment. */ | |
3543 | ++segs; | |
3544 | } | |
3545 | ||
2b05f1b7 | 3546 | if (elf_tdata (abfd)->stack_flags) |
8ded5a0f | 3547 | { |
2b05f1b7 L |
3548 | /* We need a PT_GNU_STACK segment. */ |
3549 | ++segs; | |
3550 | } | |
94b11780 | 3551 | |
2b05f1b7 L |
3552 | for (s = abfd->sections; s != NULL; s = s->next) |
3553 | { | |
8ded5a0f | 3554 | if ((s->flags & SEC_LOAD) != 0 |
0112cd26 | 3555 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f AM |
3556 | { |
3557 | /* We need a PT_NOTE segment. */ | |
3558 | ++segs; | |
1c5265b5 JJ |
3559 | /* Try to create just one PT_NOTE segment |
3560 | for all adjacent loadable .note* sections. | |
3561 | gABI requires that within a PT_NOTE segment | |
3562 | (and also inside of each SHT_NOTE section) | |
3563 | each note is padded to a multiple of 4 size, | |
3564 | so we check whether the sections are correctly | |
3565 | aligned. */ | |
3566 | if (s->alignment_power == 2) | |
3567 | while (s->next != NULL | |
3568 | && s->next->alignment_power == 2 | |
3569 | && (s->next->flags & SEC_LOAD) != 0 | |
3570 | && CONST_STRNEQ (s->next->name, ".note")) | |
3571 | s = s->next; | |
8ded5a0f AM |
3572 | } |
3573 | } | |
3574 | ||
3575 | for (s = abfd->sections; s != NULL; s = s->next) | |
3576 | { | |
3577 | if (s->flags & SEC_THREAD_LOCAL) | |
3578 | { | |
3579 | /* We need a PT_TLS segment. */ | |
3580 | ++segs; | |
3581 | break; | |
3582 | } | |
3583 | } | |
3584 | ||
3585 | /* Let the backend count up any program headers it might need. */ | |
2b05f1b7 | 3586 | bed = get_elf_backend_data (abfd); |
8ded5a0f AM |
3587 | if (bed->elf_backend_additional_program_headers) |
3588 | { | |
3589 | int a; | |
3590 | ||
3591 | a = (*bed->elf_backend_additional_program_headers) (abfd, info); | |
3592 | if (a == -1) | |
3593 | abort (); | |
3594 | segs += a; | |
3595 | } | |
3596 | ||
3597 | return segs * bed->s->sizeof_phdr; | |
3598 | } | |
3599 | ||
2ea37f1c NC |
3600 | /* Find the segment that contains the output_section of section. */ |
3601 | ||
3602 | Elf_Internal_Phdr * | |
3603 | _bfd_elf_find_segment_containing_section (bfd * abfd, asection * section) | |
3604 | { | |
3605 | struct elf_segment_map *m; | |
3606 | Elf_Internal_Phdr *p; | |
3607 | ||
3608 | for (m = elf_tdata (abfd)->segment_map, | |
3609 | p = elf_tdata (abfd)->phdr; | |
3610 | m != NULL; | |
3611 | m = m->next, p++) | |
3612 | { | |
3613 | int i; | |
3614 | ||
3615 | for (i = m->count - 1; i >= 0; i--) | |
3616 | if (m->sections[i] == section) | |
3617 | return p; | |
3618 | } | |
3619 | ||
3620 | return NULL; | |
3621 | } | |
3622 | ||
252b5132 RH |
3623 | /* Create a mapping from a set of sections to a program segment. */ |
3624 | ||
217aa764 AM |
3625 | static struct elf_segment_map * |
3626 | make_mapping (bfd *abfd, | |
3627 | asection **sections, | |
3628 | unsigned int from, | |
3629 | unsigned int to, | |
3630 | bfd_boolean phdr) | |
252b5132 RH |
3631 | { |
3632 | struct elf_segment_map *m; | |
3633 | unsigned int i; | |
3634 | asection **hdrpp; | |
dc810e39 | 3635 | bfd_size_type amt; |
252b5132 | 3636 | |
dc810e39 AM |
3637 | amt = sizeof (struct elf_segment_map); |
3638 | amt += (to - from - 1) * sizeof (asection *); | |
a50b1753 | 3639 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
252b5132 RH |
3640 | if (m == NULL) |
3641 | return NULL; | |
3642 | m->next = NULL; | |
3643 | m->p_type = PT_LOAD; | |
3644 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3645 | m->sections[i - from] = *hdrpp; | |
3646 | m->count = to - from; | |
3647 | ||
3648 | if (from == 0 && phdr) | |
3649 | { | |
3650 | /* Include the headers in the first PT_LOAD segment. */ | |
3651 | m->includes_filehdr = 1; | |
3652 | m->includes_phdrs = 1; | |
3653 | } | |
3654 | ||
3655 | return m; | |
3656 | } | |
3657 | ||
229fcec5 MM |
3658 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3659 | on failure. */ | |
3660 | ||
3661 | struct elf_segment_map * | |
3662 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3663 | { | |
3664 | struct elf_segment_map *m; | |
3665 | ||
a50b1753 NC |
3666 | m = (struct elf_segment_map *) bfd_zalloc (abfd, |
3667 | sizeof (struct elf_segment_map)); | |
229fcec5 MM |
3668 | if (m == NULL) |
3669 | return NULL; | |
3670 | m->next = NULL; | |
3671 | m->p_type = PT_DYNAMIC; | |
3672 | m->count = 1; | |
3673 | m->sections[0] = dynsec; | |
08a40648 | 3674 | |
229fcec5 MM |
3675 | return m; |
3676 | } | |
3677 | ||
8ded5a0f | 3678 | /* Possibly add or remove segments from the segment map. */ |
252b5132 | 3679 | |
b34976b6 | 3680 | static bfd_boolean |
3dea8fca AM |
3681 | elf_modify_segment_map (bfd *abfd, |
3682 | struct bfd_link_info *info, | |
3683 | bfd_boolean remove_empty_load) | |
252b5132 | 3684 | { |
252e386e | 3685 | struct elf_segment_map **m; |
8ded5a0f | 3686 | const struct elf_backend_data *bed; |
252b5132 | 3687 | |
8ded5a0f AM |
3688 | /* The placement algorithm assumes that non allocated sections are |
3689 | not in PT_LOAD segments. We ensure this here by removing such | |
3690 | sections from the segment map. We also remove excluded | |
252e386e AM |
3691 | sections. Finally, any PT_LOAD segment without sections is |
3692 | removed. */ | |
3693 | m = &elf_tdata (abfd)->segment_map; | |
3694 | while (*m) | |
8ded5a0f AM |
3695 | { |
3696 | unsigned int i, new_count; | |
252b5132 | 3697 | |
252e386e | 3698 | for (new_count = 0, i = 0; i < (*m)->count; i++) |
8ded5a0f | 3699 | { |
252e386e AM |
3700 | if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0 |
3701 | && (((*m)->sections[i]->flags & SEC_ALLOC) != 0 | |
3702 | || (*m)->p_type != PT_LOAD)) | |
8ded5a0f | 3703 | { |
252e386e AM |
3704 | (*m)->sections[new_count] = (*m)->sections[i]; |
3705 | new_count++; | |
8ded5a0f AM |
3706 | } |
3707 | } | |
252e386e | 3708 | (*m)->count = new_count; |
252b5132 | 3709 | |
3dea8fca | 3710 | if (remove_empty_load && (*m)->p_type == PT_LOAD && (*m)->count == 0) |
252e386e AM |
3711 | *m = (*m)->next; |
3712 | else | |
3713 | m = &(*m)->next; | |
8ded5a0f | 3714 | } |
252b5132 | 3715 | |
8ded5a0f AM |
3716 | bed = get_elf_backend_data (abfd); |
3717 | if (bed->elf_backend_modify_segment_map != NULL) | |
252b5132 | 3718 | { |
252e386e | 3719 | if (!(*bed->elf_backend_modify_segment_map) (abfd, info)) |
8ded5a0f | 3720 | return FALSE; |
252b5132 | 3721 | } |
252b5132 | 3722 | |
8ded5a0f AM |
3723 | return TRUE; |
3724 | } | |
252b5132 | 3725 | |
8ded5a0f | 3726 | /* Set up a mapping from BFD sections to program segments. */ |
252b5132 | 3727 | |
8ded5a0f AM |
3728 | bfd_boolean |
3729 | _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) | |
3730 | { | |
3731 | unsigned int count; | |
3732 | struct elf_segment_map *m; | |
3733 | asection **sections = NULL; | |
3734 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3dea8fca | 3735 | bfd_boolean no_user_phdrs; |
252b5132 | 3736 | |
3dea8fca AM |
3737 | no_user_phdrs = elf_tdata (abfd)->segment_map == NULL; |
3738 | if (no_user_phdrs && bfd_count_sections (abfd) != 0) | |
252b5132 | 3739 | { |
8ded5a0f AM |
3740 | asection *s; |
3741 | unsigned int i; | |
3742 | struct elf_segment_map *mfirst; | |
3743 | struct elf_segment_map **pm; | |
3744 | asection *last_hdr; | |
3745 | bfd_vma last_size; | |
3746 | unsigned int phdr_index; | |
3747 | bfd_vma maxpagesize; | |
3748 | asection **hdrpp; | |
3749 | bfd_boolean phdr_in_segment = TRUE; | |
3750 | bfd_boolean writable; | |
3751 | int tls_count = 0; | |
3752 | asection *first_tls = NULL; | |
3753 | asection *dynsec, *eh_frame_hdr; | |
3754 | bfd_size_type amt; | |
8d06853e | 3755 | bfd_vma addr_mask, wrap_to = 0; |
252b5132 | 3756 | |
8ded5a0f | 3757 | /* Select the allocated sections, and sort them. */ |
252b5132 | 3758 | |
a50b1753 NC |
3759 | sections = (asection **) bfd_malloc2 (bfd_count_sections (abfd), |
3760 | sizeof (asection *)); | |
8ded5a0f | 3761 | if (sections == NULL) |
252b5132 | 3762 | goto error_return; |
252b5132 | 3763 | |
8d06853e AM |
3764 | /* Calculate top address, avoiding undefined behaviour of shift |
3765 | left operator when shift count is equal to size of type | |
3766 | being shifted. */ | |
3767 | addr_mask = ((bfd_vma) 1 << (bfd_arch_bits_per_address (abfd) - 1)) - 1; | |
3768 | addr_mask = (addr_mask << 1) + 1; | |
3769 | ||
8ded5a0f AM |
3770 | i = 0; |
3771 | for (s = abfd->sections; s != NULL; s = s->next) | |
3772 | { | |
3773 | if ((s->flags & SEC_ALLOC) != 0) | |
3774 | { | |
3775 | sections[i] = s; | |
3776 | ++i; | |
8d06853e AM |
3777 | /* A wrapping section potentially clashes with header. */ |
3778 | if (((s->lma + s->size) & addr_mask) < (s->lma & addr_mask)) | |
3779 | wrap_to = (s->lma + s->size) & addr_mask; | |
8ded5a0f AM |
3780 | } |
3781 | } | |
3782 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3783 | count = i; | |
252b5132 | 3784 | |
8ded5a0f | 3785 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); |
252b5132 | 3786 | |
8ded5a0f | 3787 | /* Build the mapping. */ |
252b5132 | 3788 | |
8ded5a0f AM |
3789 | mfirst = NULL; |
3790 | pm = &mfirst; | |
252b5132 | 3791 | |
8ded5a0f AM |
3792 | /* If we have a .interp section, then create a PT_PHDR segment for |
3793 | the program headers and a PT_INTERP segment for the .interp | |
3794 | section. */ | |
3795 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3796 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3797 | { | |
3798 | amt = sizeof (struct elf_segment_map); | |
a50b1753 | 3799 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
3800 | if (m == NULL) |
3801 | goto error_return; | |
3802 | m->next = NULL; | |
3803 | m->p_type = PT_PHDR; | |
3804 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3805 | m->p_flags = PF_R | PF_X; | |
3806 | m->p_flags_valid = 1; | |
3807 | m->includes_phdrs = 1; | |
252b5132 | 3808 | |
8ded5a0f AM |
3809 | *pm = m; |
3810 | pm = &m->next; | |
252b5132 | 3811 | |
8ded5a0f | 3812 | amt = sizeof (struct elf_segment_map); |
a50b1753 | 3813 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
3814 | if (m == NULL) |
3815 | goto error_return; | |
3816 | m->next = NULL; | |
3817 | m->p_type = PT_INTERP; | |
3818 | m->count = 1; | |
3819 | m->sections[0] = s; | |
3820 | ||
3821 | *pm = m; | |
3822 | pm = &m->next; | |
252b5132 | 3823 | } |
8ded5a0f AM |
3824 | |
3825 | /* Look through the sections. We put sections in the same program | |
3826 | segment when the start of the second section can be placed within | |
3827 | a few bytes of the end of the first section. */ | |
3828 | last_hdr = NULL; | |
3829 | last_size = 0; | |
3830 | phdr_index = 0; | |
3831 | maxpagesize = bed->maxpagesize; | |
3832 | writable = FALSE; | |
3833 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
3834 | if (dynsec != NULL | |
3835 | && (dynsec->flags & SEC_LOAD) == 0) | |
3836 | dynsec = NULL; | |
3837 | ||
3838 | /* Deal with -Ttext or something similar such that the first section | |
3839 | is not adjacent to the program headers. This is an | |
3840 | approximation, since at this point we don't know exactly how many | |
3841 | program headers we will need. */ | |
3842 | if (count > 0) | |
252b5132 | 3843 | { |
8ded5a0f AM |
3844 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
3845 | ||
62d7a5f6 | 3846 | if (phdr_size == (bfd_size_type) -1) |
8ded5a0f AM |
3847 | phdr_size = get_program_header_size (abfd, info); |
3848 | if ((abfd->flags & D_PAGED) == 0 | |
8d06853e AM |
3849 | || (sections[0]->lma & addr_mask) < phdr_size |
3850 | || ((sections[0]->lma & addr_mask) % maxpagesize | |
3851 | < phdr_size % maxpagesize) | |
3852 | || (sections[0]->lma & addr_mask & -maxpagesize) < wrap_to) | |
8ded5a0f | 3853 | phdr_in_segment = FALSE; |
252b5132 RH |
3854 | } |
3855 | ||
8ded5a0f | 3856 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) |
252b5132 | 3857 | { |
8ded5a0f AM |
3858 | asection *hdr; |
3859 | bfd_boolean new_segment; | |
3860 | ||
3861 | hdr = *hdrpp; | |
3862 | ||
3863 | /* See if this section and the last one will fit in the same | |
3864 | segment. */ | |
3865 | ||
3866 | if (last_hdr == NULL) | |
3867 | { | |
3868 | /* If we don't have a segment yet, then we don't need a new | |
3869 | one (we build the last one after this loop). */ | |
3870 | new_segment = FALSE; | |
3871 | } | |
3872 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3873 | { | |
3874 | /* If this section has a different relation between the | |
3875 | virtual address and the load address, then we need a new | |
3876 | segment. */ | |
3877 | new_segment = TRUE; | |
3878 | } | |
b5599592 AM |
3879 | else if (hdr->lma < last_hdr->lma + last_size |
3880 | || last_hdr->lma + last_size < last_hdr->lma) | |
3881 | { | |
3882 | /* If this section has a load address that makes it overlap | |
3883 | the previous section, then we need a new segment. */ | |
3884 | new_segment = TRUE; | |
3885 | } | |
39948a60 NC |
3886 | /* In the next test we have to be careful when last_hdr->lma is close |
3887 | to the end of the address space. If the aligned address wraps | |
3888 | around to the start of the address space, then there are no more | |
3889 | pages left in memory and it is OK to assume that the current | |
3890 | section can be included in the current segment. */ | |
3891 | else if ((BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) + maxpagesize | |
3892 | > last_hdr->lma) | |
3893 | && (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) + maxpagesize | |
4ff73856 | 3894 | <= hdr->lma)) |
8ded5a0f AM |
3895 | { |
3896 | /* If putting this section in this segment would force us to | |
3897 | skip a page in the segment, then we need a new segment. */ | |
3898 | new_segment = TRUE; | |
3899 | } | |
3900 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 | |
3901 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
3902 | { | |
3903 | /* We don't want to put a loadable section after a | |
3904 | nonloadable section in the same segment. | |
3905 | Consider .tbss sections as loadable for this purpose. */ | |
3906 | new_segment = TRUE; | |
3907 | } | |
3908 | else if ((abfd->flags & D_PAGED) == 0) | |
3909 | { | |
3910 | /* If the file is not demand paged, which means that we | |
3911 | don't require the sections to be correctly aligned in the | |
3912 | file, then there is no other reason for a new segment. */ | |
3913 | new_segment = FALSE; | |
3914 | } | |
3915 | else if (! writable | |
3916 | && (hdr->flags & SEC_READONLY) == 0 | |
8d06853e AM |
3917 | && (((last_hdr->lma + last_size - 1) & -maxpagesize) |
3918 | != (hdr->lma & -maxpagesize))) | |
8ded5a0f AM |
3919 | { |
3920 | /* We don't want to put a writable section in a read only | |
3921 | segment, unless they are on the same page in memory | |
3922 | anyhow. We already know that the last section does not | |
3923 | bring us past the current section on the page, so the | |
3924 | only case in which the new section is not on the same | |
3925 | page as the previous section is when the previous section | |
3926 | ends precisely on a page boundary. */ | |
3927 | new_segment = TRUE; | |
3928 | } | |
3929 | else | |
3930 | { | |
3931 | /* Otherwise, we can use the same segment. */ | |
3932 | new_segment = FALSE; | |
3933 | } | |
3934 | ||
2889e75b | 3935 | /* Allow interested parties a chance to override our decision. */ |
ceae84aa AM |
3936 | if (last_hdr != NULL |
3937 | && info != NULL | |
3938 | && info->callbacks->override_segment_assignment != NULL) | |
3939 | new_segment | |
3940 | = info->callbacks->override_segment_assignment (info, abfd, hdr, | |
3941 | last_hdr, | |
3942 | new_segment); | |
2889e75b | 3943 | |
8ded5a0f AM |
3944 | if (! new_segment) |
3945 | { | |
3946 | if ((hdr->flags & SEC_READONLY) == 0) | |
3947 | writable = TRUE; | |
3948 | last_hdr = hdr; | |
3949 | /* .tbss sections effectively have zero size. */ | |
3950 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) | |
3951 | != SEC_THREAD_LOCAL) | |
3952 | last_size = hdr->size; | |
3953 | else | |
3954 | last_size = 0; | |
3955 | continue; | |
3956 | } | |
3957 | ||
3958 | /* We need a new program segment. We must create a new program | |
3959 | header holding all the sections from phdr_index until hdr. */ | |
3960 | ||
3961 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3962 | if (m == NULL) | |
3963 | goto error_return; | |
3964 | ||
3965 | *pm = m; | |
3966 | pm = &m->next; | |
3967 | ||
252b5132 | 3968 | if ((hdr->flags & SEC_READONLY) == 0) |
b34976b6 | 3969 | writable = TRUE; |
8ded5a0f AM |
3970 | else |
3971 | writable = FALSE; | |
3972 | ||
baaff79e JJ |
3973 | last_hdr = hdr; |
3974 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3975 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3976 | last_size = hdr->size; |
baaff79e JJ |
3977 | else |
3978 | last_size = 0; | |
8ded5a0f AM |
3979 | phdr_index = i; |
3980 | phdr_in_segment = FALSE; | |
252b5132 RH |
3981 | } |
3982 | ||
8ded5a0f AM |
3983 | /* Create a final PT_LOAD program segment. */ |
3984 | if (last_hdr != NULL) | |
3985 | { | |
3986 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3987 | if (m == NULL) | |
3988 | goto error_return; | |
252b5132 | 3989 | |
8ded5a0f AM |
3990 | *pm = m; |
3991 | pm = &m->next; | |
3992 | } | |
252b5132 | 3993 | |
8ded5a0f AM |
3994 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ |
3995 | if (dynsec != NULL) | |
3996 | { | |
3997 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
3998 | if (m == NULL) | |
3999 | goto error_return; | |
4000 | *pm = m; | |
4001 | pm = &m->next; | |
4002 | } | |
252b5132 | 4003 | |
1c5265b5 JJ |
4004 | /* For each batch of consecutive loadable .note sections, |
4005 | add a PT_NOTE segment. We don't use bfd_get_section_by_name, | |
4006 | because if we link together nonloadable .note sections and | |
4007 | loadable .note sections, we will generate two .note sections | |
4008 | in the output file. FIXME: Using names for section types is | |
4009 | bogus anyhow. */ | |
8ded5a0f AM |
4010 | for (s = abfd->sections; s != NULL; s = s->next) |
4011 | { | |
4012 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 4013 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f | 4014 | { |
1c5265b5 | 4015 | asection *s2; |
91d6fa6a NC |
4016 | |
4017 | count = 1; | |
8ded5a0f | 4018 | amt = sizeof (struct elf_segment_map); |
1c5265b5 JJ |
4019 | if (s->alignment_power == 2) |
4020 | for (s2 = s; s2->next != NULL; s2 = s2->next) | |
55b581a6 JJ |
4021 | { |
4022 | if (s2->next->alignment_power == 2 | |
4023 | && (s2->next->flags & SEC_LOAD) != 0 | |
4024 | && CONST_STRNEQ (s2->next->name, ".note") | |
8d06853e AM |
4025 | && align_power (s2->lma + s2->size, 2) |
4026 | == s2->next->lma) | |
55b581a6 JJ |
4027 | count++; |
4028 | else | |
4029 | break; | |
4030 | } | |
1c5265b5 | 4031 | amt += (count - 1) * sizeof (asection *); |
a50b1753 | 4032 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
4033 | if (m == NULL) |
4034 | goto error_return; | |
4035 | m->next = NULL; | |
4036 | m->p_type = PT_NOTE; | |
1c5265b5 JJ |
4037 | m->count = count; |
4038 | while (count > 1) | |
4039 | { | |
4040 | m->sections[m->count - count--] = s; | |
4041 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
4042 | s = s->next; | |
4043 | } | |
4044 | m->sections[m->count - 1] = s; | |
4045 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
8ded5a0f AM |
4046 | *pm = m; |
4047 | pm = &m->next; | |
4048 | } | |
4049 | if (s->flags & SEC_THREAD_LOCAL) | |
4050 | { | |
4051 | if (! tls_count) | |
4052 | first_tls = s; | |
4053 | tls_count++; | |
4054 | } | |
4055 | } | |
252b5132 | 4056 | |
8ded5a0f AM |
4057 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ |
4058 | if (tls_count > 0) | |
4059 | { | |
8ded5a0f AM |
4060 | amt = sizeof (struct elf_segment_map); |
4061 | amt += (tls_count - 1) * sizeof (asection *); | |
a50b1753 | 4062 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
4063 | if (m == NULL) |
4064 | goto error_return; | |
4065 | m->next = NULL; | |
4066 | m->p_type = PT_TLS; | |
4067 | m->count = tls_count; | |
4068 | /* Mandated PF_R. */ | |
4069 | m->p_flags = PF_R; | |
4070 | m->p_flags_valid = 1; | |
91d6fa6a | 4071 | for (i = 0; i < (unsigned int) tls_count; ++i) |
8ded5a0f AM |
4072 | { |
4073 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
4074 | m->sections[i] = first_tls; | |
4075 | first_tls = first_tls->next; | |
4076 | } | |
252b5132 | 4077 | |
8ded5a0f AM |
4078 | *pm = m; |
4079 | pm = &m->next; | |
4080 | } | |
252b5132 | 4081 | |
8ded5a0f AM |
4082 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
4083 | segment. */ | |
4084 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; | |
4085 | if (eh_frame_hdr != NULL | |
4086 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
252b5132 | 4087 | { |
dc810e39 | 4088 | amt = sizeof (struct elf_segment_map); |
a50b1753 | 4089 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
252b5132 RH |
4090 | if (m == NULL) |
4091 | goto error_return; | |
4092 | m->next = NULL; | |
8ded5a0f | 4093 | m->p_type = PT_GNU_EH_FRAME; |
252b5132 | 4094 | m->count = 1; |
8ded5a0f | 4095 | m->sections[0] = eh_frame_hdr->output_section; |
252b5132 RH |
4096 | |
4097 | *pm = m; | |
4098 | pm = &m->next; | |
4099 | } | |
13ae64f3 | 4100 | |
8ded5a0f | 4101 | if (elf_tdata (abfd)->stack_flags) |
13ae64f3 | 4102 | { |
8ded5a0f | 4103 | amt = sizeof (struct elf_segment_map); |
a50b1753 | 4104 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
4105 | if (m == NULL) |
4106 | goto error_return; | |
4107 | m->next = NULL; | |
2b05f1b7 | 4108 | m->p_type = PT_GNU_STACK; |
8ded5a0f AM |
4109 | m->p_flags = elf_tdata (abfd)->stack_flags; |
4110 | m->p_flags_valid = 1; | |
252b5132 | 4111 | |
8ded5a0f AM |
4112 | *pm = m; |
4113 | pm = &m->next; | |
4114 | } | |
65765700 | 4115 | |
ceae84aa | 4116 | if (info != NULL && info->relro) |
8ded5a0f | 4117 | { |
f210dcff L |
4118 | for (m = mfirst; m != NULL; m = m->next) |
4119 | { | |
4120 | if (m->p_type == PT_LOAD) | |
4121 | { | |
4122 | asection *last = m->sections[m->count - 1]; | |
4123 | bfd_vma vaddr = m->sections[0]->vma; | |
4124 | bfd_vma filesz = last->vma - vaddr + last->size; | |
65765700 | 4125 | |
f210dcff L |
4126 | if (vaddr < info->relro_end |
4127 | && vaddr >= info->relro_start | |
4128 | && (vaddr + filesz) >= info->relro_end) | |
4129 | break; | |
4130 | } | |
4131 | } | |
4132 | ||
4133 | /* Make a PT_GNU_RELRO segment only when it isn't empty. */ | |
4134 | if (m != NULL) | |
4135 | { | |
4136 | amt = sizeof (struct elf_segment_map); | |
a50b1753 | 4137 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
f210dcff L |
4138 | if (m == NULL) |
4139 | goto error_return; | |
4140 | m->next = NULL; | |
4141 | m->p_type = PT_GNU_RELRO; | |
4142 | m->p_flags = PF_R; | |
4143 | m->p_flags_valid = 1; | |
4144 | ||
4145 | *pm = m; | |
4146 | pm = &m->next; | |
4147 | } | |
8ded5a0f | 4148 | } |
9ee5e499 | 4149 | |
8ded5a0f AM |
4150 | free (sections); |
4151 | elf_tdata (abfd)->segment_map = mfirst; | |
9ee5e499 JJ |
4152 | } |
4153 | ||
3dea8fca | 4154 | if (!elf_modify_segment_map (abfd, info, no_user_phdrs)) |
8ded5a0f | 4155 | return FALSE; |
8c37241b | 4156 | |
8ded5a0f AM |
4157 | for (count = 0, m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
4158 | ++count; | |
4159 | elf_tdata (abfd)->program_header_size = count * bed->s->sizeof_phdr; | |
252b5132 | 4160 | |
b34976b6 | 4161 | return TRUE; |
252b5132 RH |
4162 | |
4163 | error_return: | |
4164 | if (sections != NULL) | |
4165 | free (sections); | |
b34976b6 | 4166 | return FALSE; |
252b5132 RH |
4167 | } |
4168 | ||
4169 | /* Sort sections by address. */ | |
4170 | ||
4171 | static int | |
217aa764 | 4172 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
4173 | { |
4174 | const asection *sec1 = *(const asection **) arg1; | |
4175 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 4176 | bfd_size_type size1, size2; |
252b5132 RH |
4177 | |
4178 | /* Sort by LMA first, since this is the address used to | |
4179 | place the section into a segment. */ | |
4180 | if (sec1->lma < sec2->lma) | |
4181 | return -1; | |
4182 | else if (sec1->lma > sec2->lma) | |
4183 | return 1; | |
4184 | ||
4185 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
4186 | the same, and this will do nothing. */ | |
4187 | if (sec1->vma < sec2->vma) | |
4188 | return -1; | |
4189 | else if (sec1->vma > sec2->vma) | |
4190 | return 1; | |
4191 | ||
4192 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
4193 | ||
07c6e936 | 4194 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
4195 | |
4196 | if (TOEND (sec1)) | |
4197 | { | |
4198 | if (TOEND (sec2)) | |
00a7cdc5 NC |
4199 | { |
4200 | /* If the indicies are the same, do not return 0 | |
4201 | here, but continue to try the next comparison. */ | |
4202 | if (sec1->target_index - sec2->target_index != 0) | |
4203 | return sec1->target_index - sec2->target_index; | |
4204 | } | |
252b5132 RH |
4205 | else |
4206 | return 1; | |
4207 | } | |
00a7cdc5 | 4208 | else if (TOEND (sec2)) |
252b5132 RH |
4209 | return -1; |
4210 | ||
4211 | #undef TOEND | |
4212 | ||
00a7cdc5 NC |
4213 | /* Sort by size, to put zero sized sections |
4214 | before others at the same address. */ | |
252b5132 | 4215 | |
eea6121a AM |
4216 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
4217 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
4218 | |
4219 | if (size1 < size2) | |
252b5132 | 4220 | return -1; |
eecdbe52 | 4221 | if (size1 > size2) |
252b5132 RH |
4222 | return 1; |
4223 | ||
4224 | return sec1->target_index - sec2->target_index; | |
4225 | } | |
4226 | ||
340b6d91 AC |
4227 | /* Ian Lance Taylor writes: |
4228 | ||
4229 | We shouldn't be using % with a negative signed number. That's just | |
4230 | not good. We have to make sure either that the number is not | |
4231 | negative, or that the number has an unsigned type. When the types | |
4232 | are all the same size they wind up as unsigned. When file_ptr is a | |
4233 | larger signed type, the arithmetic winds up as signed long long, | |
4234 | which is wrong. | |
4235 | ||
4236 | What we're trying to say here is something like ``increase OFF by | |
4237 | the least amount that will cause it to be equal to the VMA modulo | |
4238 | the page size.'' */ | |
4239 | /* In other words, something like: | |
4240 | ||
4241 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
4242 | off_offset = off % bed->maxpagesize; | |
4243 | if (vma_offset < off_offset) | |
4244 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4245 | else | |
4246 | adjustment = vma_offset - off_offset; | |
08a40648 | 4247 | |
340b6d91 AC |
4248 | which can can be collapsed into the expression below. */ |
4249 | ||
4250 | static file_ptr | |
4251 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4252 | { | |
4253 | return ((vma - off) % maxpagesize); | |
4254 | } | |
4255 | ||
6d33f217 L |
4256 | static void |
4257 | print_segment_map (const struct elf_segment_map *m) | |
4258 | { | |
4259 | unsigned int j; | |
4260 | const char *pt = get_segment_type (m->p_type); | |
4261 | char buf[32]; | |
4262 | ||
4263 | if (pt == NULL) | |
4264 | { | |
4265 | if (m->p_type >= PT_LOPROC && m->p_type <= PT_HIPROC) | |
4266 | sprintf (buf, "LOPROC+%7.7x", | |
4267 | (unsigned int) (m->p_type - PT_LOPROC)); | |
4268 | else if (m->p_type >= PT_LOOS && m->p_type <= PT_HIOS) | |
4269 | sprintf (buf, "LOOS+%7.7x", | |
4270 | (unsigned int) (m->p_type - PT_LOOS)); | |
4271 | else | |
4272 | snprintf (buf, sizeof (buf), "%8.8x", | |
4273 | (unsigned int) m->p_type); | |
4274 | pt = buf; | |
4275 | } | |
4276 | fprintf (stderr, "%s:", pt); | |
4277 | for (j = 0; j < m->count; j++) | |
4278 | fprintf (stderr, " %s", m->sections [j]->name); | |
4279 | putc ('\n',stderr); | |
4280 | } | |
4281 | ||
32812159 AM |
4282 | static bfd_boolean |
4283 | write_zeros (bfd *abfd, file_ptr pos, bfd_size_type len) | |
4284 | { | |
4285 | void *buf; | |
4286 | bfd_boolean ret; | |
4287 | ||
4288 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
4289 | return FALSE; | |
4290 | buf = bfd_zmalloc (len); | |
4291 | if (buf == NULL) | |
4292 | return FALSE; | |
4293 | ret = bfd_bwrite (buf, len, abfd) == len; | |
4294 | free (buf); | |
4295 | return ret; | |
4296 | } | |
4297 | ||
252b5132 RH |
4298 | /* Assign file positions to the sections based on the mapping from |
4299 | sections to segments. This function also sets up some fields in | |
f3520d2f | 4300 | the file header. */ |
252b5132 | 4301 | |
b34976b6 | 4302 | static bfd_boolean |
f3520d2f AM |
4303 | assign_file_positions_for_load_sections (bfd *abfd, |
4304 | struct bfd_link_info *link_info) | |
252b5132 RH |
4305 | { |
4306 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 4307 | struct elf_segment_map *m; |
252b5132 | 4308 | Elf_Internal_Phdr *phdrs; |
252b5132 | 4309 | Elf_Internal_Phdr *p; |
02bf8d82 | 4310 | file_ptr off; |
3f570048 | 4311 | bfd_size_type maxpagesize; |
f3520d2f | 4312 | unsigned int alloc; |
0920dee7 | 4313 | unsigned int i, j; |
2b0bc088 | 4314 | bfd_vma header_pad = 0; |
252b5132 | 4315 | |
e36284ab | 4316 | if (link_info == NULL |
ceae84aa | 4317 | && !_bfd_elf_map_sections_to_segments (abfd, link_info)) |
8ded5a0f | 4318 | return FALSE; |
252b5132 | 4319 | |
8ded5a0f | 4320 | alloc = 0; |
252b5132 | 4321 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
2b0bc088 NC |
4322 | { |
4323 | ++alloc; | |
4324 | if (m->header_size) | |
4325 | header_pad = m->header_size; | |
4326 | } | |
252b5132 RH |
4327 | |
4328 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4329 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
8ded5a0f | 4330 | elf_elfheader (abfd)->e_phnum = alloc; |
252b5132 | 4331 | |
62d7a5f6 | 4332 | if (elf_tdata (abfd)->program_header_size == (bfd_size_type) -1) |
8ded5a0f AM |
4333 | elf_tdata (abfd)->program_header_size = alloc * bed->s->sizeof_phdr; |
4334 | else | |
4335 | BFD_ASSERT (elf_tdata (abfd)->program_header_size | |
59e0647f | 4336 | >= alloc * bed->s->sizeof_phdr); |
252b5132 RH |
4337 | |
4338 | if (alloc == 0) | |
f3520d2f | 4339 | { |
8ded5a0f AM |
4340 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; |
4341 | return TRUE; | |
f3520d2f | 4342 | } |
252b5132 | 4343 | |
57268894 HPN |
4344 | /* We're writing the size in elf_tdata (abfd)->program_header_size, |
4345 | see assign_file_positions_except_relocs, so make sure we have | |
4346 | that amount allocated, with trailing space cleared. | |
4347 | The variable alloc contains the computed need, while elf_tdata | |
4348 | (abfd)->program_header_size contains the size used for the | |
4349 | layout. | |
4350 | See ld/emultempl/elf-generic.em:gld${EMULATION_NAME}_map_segments | |
4351 | where the layout is forced to according to a larger size in the | |
4352 | last iterations for the testcase ld-elf/header. */ | |
4353 | BFD_ASSERT (elf_tdata (abfd)->program_header_size % bed->s->sizeof_phdr | |
4354 | == 0); | |
a50b1753 NC |
4355 | phdrs = (Elf_Internal_Phdr *) |
4356 | bfd_zalloc2 (abfd, | |
4357 | (elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr), | |
4358 | sizeof (Elf_Internal_Phdr)); | |
f3520d2f | 4359 | elf_tdata (abfd)->phdr = phdrs; |
252b5132 | 4360 | if (phdrs == NULL) |
b34976b6 | 4361 | return FALSE; |
252b5132 | 4362 | |
3f570048 AM |
4363 | maxpagesize = 1; |
4364 | if ((abfd->flags & D_PAGED) != 0) | |
4365 | maxpagesize = bed->maxpagesize; | |
4366 | ||
252b5132 RH |
4367 | off = bed->s->sizeof_ehdr; |
4368 | off += alloc * bed->s->sizeof_phdr; | |
2b0bc088 NC |
4369 | if (header_pad < (bfd_vma) off) |
4370 | header_pad = 0; | |
4371 | else | |
4372 | header_pad -= off; | |
4373 | off += header_pad; | |
252b5132 | 4374 | |
0920dee7 | 4375 | for (m = elf_tdata (abfd)->segment_map, p = phdrs, j = 0; |
252b5132 | 4376 | m != NULL; |
0920dee7 | 4377 | m = m->next, p++, j++) |
252b5132 | 4378 | { |
252b5132 | 4379 | asection **secpp; |
bf988460 AM |
4380 | bfd_vma off_adjust; |
4381 | bfd_boolean no_contents; | |
252b5132 RH |
4382 | |
4383 | /* If elf_segment_map is not from map_sections_to_segments, the | |
08a40648 | 4384 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4385 | not be done to the PT_NOTE section of a corefile, which may |
4386 | contain several pseudo-sections artificially created by bfd. | |
4387 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4388 | if (m->count > 1 |
4389 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4390 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4391 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4392 | elf_sort_sections); | |
4393 | ||
b301b248 AM |
4394 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4395 | number of sections with contents contributing to both p_filesz | |
4396 | and p_memsz, followed by a number of sections with no contents | |
4397 | that just contribute to p_memsz. In this loop, OFF tracks next | |
02bf8d82 | 4398 | available file offset for PT_LOAD and PT_NOTE segments. */ |
252b5132 | 4399 | p->p_type = m->p_type; |
28a7f3e7 | 4400 | p->p_flags = m->p_flags; |
252b5132 | 4401 | |
3f570048 AM |
4402 | if (m->count == 0) |
4403 | p->p_vaddr = 0; | |
4404 | else | |
3271a814 | 4405 | p->p_vaddr = m->sections[0]->vma - m->p_vaddr_offset; |
3f570048 AM |
4406 | |
4407 | if (m->p_paddr_valid) | |
4408 | p->p_paddr = m->p_paddr; | |
4409 | else if (m->count == 0) | |
4410 | p->p_paddr = 0; | |
4411 | else | |
08a40648 | 4412 | p->p_paddr = m->sections[0]->lma - m->p_vaddr_offset; |
3f570048 AM |
4413 | |
4414 | if (p->p_type == PT_LOAD | |
4415 | && (abfd->flags & D_PAGED) != 0) | |
4416 | { | |
4417 | /* p_align in demand paged PT_LOAD segments effectively stores | |
4418 | the maximum page size. When copying an executable with | |
4419 | objcopy, we set m->p_align from the input file. Use this | |
4420 | value for maxpagesize rather than bed->maxpagesize, which | |
4421 | may be different. Note that we use maxpagesize for PT_TLS | |
4422 | segment alignment later in this function, so we are relying | |
4423 | on at least one PT_LOAD segment appearing before a PT_TLS | |
4424 | segment. */ | |
4425 | if (m->p_align_valid) | |
4426 | maxpagesize = m->p_align; | |
4427 | ||
4428 | p->p_align = maxpagesize; | |
4429 | } | |
3271a814 NS |
4430 | else if (m->p_align_valid) |
4431 | p->p_align = m->p_align; | |
e970b90a DJ |
4432 | else if (m->count == 0) |
4433 | p->p_align = 1 << bed->s->log_file_align; | |
3f570048 AM |
4434 | else |
4435 | p->p_align = 0; | |
4436 | ||
bf988460 AM |
4437 | no_contents = FALSE; |
4438 | off_adjust = 0; | |
252b5132 | 4439 | if (p->p_type == PT_LOAD |
b301b248 | 4440 | && m->count > 0) |
252b5132 | 4441 | { |
b301b248 | 4442 | bfd_size_type align; |
a49e53ed | 4443 | unsigned int align_power = 0; |
b301b248 | 4444 | |
3271a814 NS |
4445 | if (m->p_align_valid) |
4446 | align = p->p_align; | |
4447 | else | |
252b5132 | 4448 | { |
3271a814 NS |
4449 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4450 | { | |
4451 | unsigned int secalign; | |
08a40648 | 4452 | |
3271a814 NS |
4453 | secalign = bfd_get_section_alignment (abfd, *secpp); |
4454 | if (secalign > align_power) | |
4455 | align_power = secalign; | |
4456 | } | |
4457 | align = (bfd_size_type) 1 << align_power; | |
4458 | if (align < maxpagesize) | |
4459 | align = maxpagesize; | |
b301b248 | 4460 | } |
252b5132 | 4461 | |
02bf8d82 AM |
4462 | for (i = 0; i < m->count; i++) |
4463 | if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
4464 | /* If we aren't making room for this section, then | |
4465 | it must be SHT_NOBITS regardless of what we've | |
4466 | set via struct bfd_elf_special_section. */ | |
4467 | elf_section_type (m->sections[i]) = SHT_NOBITS; | |
4468 | ||
bf988460 | 4469 | /* Find out whether this segment contains any loadable |
aea274d3 AM |
4470 | sections. */ |
4471 | no_contents = TRUE; | |
4472 | for (i = 0; i < m->count; i++) | |
4473 | if (elf_section_type (m->sections[i]) != SHT_NOBITS) | |
4474 | { | |
4475 | no_contents = FALSE; | |
4476 | break; | |
4477 | } | |
bf988460 | 4478 | |
85cfcbfb | 4479 | off_adjust = vma_page_aligned_bias (p->p_vaddr, off, align); |
bf988460 AM |
4480 | off += off_adjust; |
4481 | if (no_contents) | |
4482 | { | |
4483 | /* We shouldn't need to align the segment on disk since | |
4484 | the segment doesn't need file space, but the gABI | |
4485 | arguably requires the alignment and glibc ld.so | |
4486 | checks it. So to comply with the alignment | |
4487 | requirement but not waste file space, we adjust | |
4488 | p_offset for just this segment. (OFF_ADJUST is | |
4489 | subtracted from OFF later.) This may put p_offset | |
4490 | past the end of file, but that shouldn't matter. */ | |
4491 | } | |
4492 | else | |
4493 | off_adjust = 0; | |
252b5132 | 4494 | } |
b1a6d0b1 NC |
4495 | /* Make sure the .dynamic section is the first section in the |
4496 | PT_DYNAMIC segment. */ | |
4497 | else if (p->p_type == PT_DYNAMIC | |
4498 | && m->count > 1 | |
4499 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4500 | { | |
4501 | _bfd_error_handler | |
b301b248 AM |
4502 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4503 | abfd); | |
b1a6d0b1 NC |
4504 | bfd_set_error (bfd_error_bad_value); |
4505 | return FALSE; | |
4506 | } | |
3f001e84 JK |
4507 | /* Set the note section type to SHT_NOTE. */ |
4508 | else if (p->p_type == PT_NOTE) | |
4509 | for (i = 0; i < m->count; i++) | |
4510 | elf_section_type (m->sections[i]) = SHT_NOTE; | |
252b5132 | 4511 | |
252b5132 RH |
4512 | p->p_offset = 0; |
4513 | p->p_filesz = 0; | |
4514 | p->p_memsz = 0; | |
4515 | ||
4516 | if (m->includes_filehdr) | |
4517 | { | |
bf988460 | 4518 | if (!m->p_flags_valid) |
252b5132 | 4519 | p->p_flags |= PF_R; |
252b5132 RH |
4520 | p->p_filesz = bed->s->sizeof_ehdr; |
4521 | p->p_memsz = bed->s->sizeof_ehdr; | |
4522 | if (m->count > 0) | |
4523 | { | |
4524 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4525 | ||
4526 | if (p->p_vaddr < (bfd_vma) off) | |
4527 | { | |
caf47ea6 | 4528 | (*_bfd_error_handler) |
b301b248 AM |
4529 | (_("%B: Not enough room for program headers, try linking with -N"), |
4530 | abfd); | |
252b5132 | 4531 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4532 | return FALSE; |
252b5132 RH |
4533 | } |
4534 | ||
4535 | p->p_vaddr -= off; | |
bf988460 | 4536 | if (!m->p_paddr_valid) |
252b5132 RH |
4537 | p->p_paddr -= off; |
4538 | } | |
252b5132 RH |
4539 | } |
4540 | ||
4541 | if (m->includes_phdrs) | |
4542 | { | |
bf988460 | 4543 | if (!m->p_flags_valid) |
252b5132 RH |
4544 | p->p_flags |= PF_R; |
4545 | ||
f3520d2f | 4546 | if (!m->includes_filehdr) |
252b5132 RH |
4547 | { |
4548 | p->p_offset = bed->s->sizeof_ehdr; | |
4549 | ||
4550 | if (m->count > 0) | |
4551 | { | |
4552 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4553 | p->p_vaddr -= off - p->p_offset; | |
bf988460 | 4554 | if (!m->p_paddr_valid) |
252b5132 RH |
4555 | p->p_paddr -= off - p->p_offset; |
4556 | } | |
252b5132 RH |
4557 | } |
4558 | ||
4559 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4560 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
2b0bc088 NC |
4561 | if (m->count) |
4562 | { | |
4563 | p->p_filesz += header_pad; | |
4564 | p->p_memsz += header_pad; | |
4565 | } | |
252b5132 RH |
4566 | } |
4567 | ||
4568 | if (p->p_type == PT_LOAD | |
4569 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4570 | { | |
bf988460 | 4571 | if (!m->includes_filehdr && !m->includes_phdrs) |
02bf8d82 | 4572 | p->p_offset = off; |
252b5132 RH |
4573 | else |
4574 | { | |
4575 | file_ptr adjust; | |
4576 | ||
4577 | adjust = off - (p->p_offset + p->p_filesz); | |
bf988460 AM |
4578 | if (!no_contents) |
4579 | p->p_filesz += adjust; | |
252b5132 RH |
4580 | p->p_memsz += adjust; |
4581 | } | |
4582 | } | |
4583 | ||
1ea63fd2 AM |
4584 | /* Set up p_filesz, p_memsz, p_align and p_flags from the section |
4585 | maps. Set filepos for sections in PT_LOAD segments, and in | |
4586 | core files, for sections in PT_NOTE segments. | |
4587 | assign_file_positions_for_non_load_sections will set filepos | |
4588 | for other sections and update p_filesz for other segments. */ | |
252b5132 RH |
4589 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4590 | { | |
4591 | asection *sec; | |
252b5132 | 4592 | bfd_size_type align; |
627b32bc | 4593 | Elf_Internal_Shdr *this_hdr; |
252b5132 RH |
4594 | |
4595 | sec = *secpp; | |
02bf8d82 | 4596 | this_hdr = &elf_section_data (sec)->this_hdr; |
3f570048 | 4597 | align = (bfd_size_type) 1 << bfd_get_section_alignment (abfd, sec); |
252b5132 | 4598 | |
88967714 AM |
4599 | if ((p->p_type == PT_LOAD |
4600 | || p->p_type == PT_TLS) | |
4601 | && (this_hdr->sh_type != SHT_NOBITS | |
4602 | || ((this_hdr->sh_flags & SHF_ALLOC) != 0 | |
4603 | && ((this_hdr->sh_flags & SHF_TLS) == 0 | |
4604 | || p->p_type == PT_TLS)))) | |
252b5132 | 4605 | { |
b5599592 AM |
4606 | bfd_vma p_start = p->p_paddr; |
4607 | bfd_vma p_end = p_start + p->p_memsz; | |
4608 | bfd_vma s_start = sec->lma; | |
4609 | bfd_vma adjust = s_start - p_end; | |
252b5132 | 4610 | |
a2d1e028 L |
4611 | if (adjust != 0 |
4612 | && (s_start < p_end | |
4613 | || p_end < p_start)) | |
252b5132 | 4614 | { |
88967714 | 4615 | (*_bfd_error_handler) |
b5599592 AM |
4616 | (_("%B: section %A lma %#lx adjusted to %#lx"), abfd, sec, |
4617 | (unsigned long) s_start, (unsigned long) p_end); | |
88967714 | 4618 | adjust = 0; |
b5599592 | 4619 | sec->lma = p_end; |
1cfb7d1e | 4620 | } |
3ac9b6c9 | 4621 | p->p_memsz += adjust; |
1cfb7d1e | 4622 | |
88967714 AM |
4623 | if (this_hdr->sh_type != SHT_NOBITS) |
4624 | { | |
32812159 AM |
4625 | if (p->p_filesz + adjust < p->p_memsz) |
4626 | { | |
4627 | /* We have a PROGBITS section following NOBITS ones. | |
4628 | Allocate file space for the NOBITS section(s) and | |
4629 | zero it. */ | |
4630 | adjust = p->p_memsz - p->p_filesz; | |
4631 | if (!write_zeros (abfd, off, adjust)) | |
4632 | return FALSE; | |
4633 | } | |
88967714 AM |
4634 | off += adjust; |
4635 | p->p_filesz += adjust; | |
252b5132 | 4636 | } |
252b5132 RH |
4637 | } |
4638 | ||
4639 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4640 | { | |
b301b248 AM |
4641 | /* The section at i == 0 is the one that actually contains |
4642 | everything. */ | |
4a938328 MS |
4643 | if (i == 0) |
4644 | { | |
627b32bc | 4645 | this_hdr->sh_offset = sec->filepos = off; |
6a3cd2b4 AM |
4646 | off += this_hdr->sh_size; |
4647 | p->p_filesz = this_hdr->sh_size; | |
b301b248 AM |
4648 | p->p_memsz = 0; |
4649 | p->p_align = 1; | |
252b5132 | 4650 | } |
4a938328 | 4651 | else |
252b5132 | 4652 | { |
b301b248 | 4653 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4654 | sec->filepos = 0; |
eea6121a | 4655 | sec->size = 0; |
b301b248 AM |
4656 | sec->flags = 0; |
4657 | continue; | |
252b5132 | 4658 | } |
252b5132 RH |
4659 | } |
4660 | else | |
4661 | { | |
b301b248 AM |
4662 | if (p->p_type == PT_LOAD) |
4663 | { | |
02bf8d82 AM |
4664 | this_hdr->sh_offset = sec->filepos = off; |
4665 | if (this_hdr->sh_type != SHT_NOBITS) | |
6a3cd2b4 | 4666 | off += this_hdr->sh_size; |
b301b248 | 4667 | } |
252b5132 | 4668 | |
02bf8d82 | 4669 | if (this_hdr->sh_type != SHT_NOBITS) |
b301b248 | 4670 | { |
6a3cd2b4 | 4671 | p->p_filesz += this_hdr->sh_size; |
02bf8d82 AM |
4672 | /* A load section without SHF_ALLOC is something like |
4673 | a note section in a PT_NOTE segment. These take | |
4674 | file space but are not loaded into memory. */ | |
4675 | if ((this_hdr->sh_flags & SHF_ALLOC) != 0) | |
6a3cd2b4 | 4676 | p->p_memsz += this_hdr->sh_size; |
b301b248 | 4677 | } |
6a3cd2b4 | 4678 | else if ((this_hdr->sh_flags & SHF_ALLOC) != 0) |
13ae64f3 | 4679 | { |
6a3cd2b4 AM |
4680 | if (p->p_type == PT_TLS) |
4681 | p->p_memsz += this_hdr->sh_size; | |
4682 | ||
4683 | /* .tbss is special. It doesn't contribute to p_memsz of | |
4684 | normal segments. */ | |
4685 | else if ((this_hdr->sh_flags & SHF_TLS) == 0) | |
4686 | p->p_memsz += this_hdr->sh_size; | |
13ae64f3 JJ |
4687 | } |
4688 | ||
b10a8ae0 L |
4689 | if (align > p->p_align |
4690 | && !m->p_align_valid | |
4691 | && (p->p_type != PT_LOAD | |
4692 | || (abfd->flags & D_PAGED) == 0)) | |
252b5132 RH |
4693 | p->p_align = align; |
4694 | } | |
4695 | ||
bf988460 | 4696 | if (!m->p_flags_valid) |
252b5132 RH |
4697 | { |
4698 | p->p_flags |= PF_R; | |
02bf8d82 | 4699 | if ((this_hdr->sh_flags & SHF_EXECINSTR) != 0) |
252b5132 | 4700 | p->p_flags |= PF_X; |
02bf8d82 | 4701 | if ((this_hdr->sh_flags & SHF_WRITE) != 0) |
252b5132 RH |
4702 | p->p_flags |= PF_W; |
4703 | } | |
4704 | } | |
bf988460 | 4705 | off -= off_adjust; |
0920dee7 | 4706 | |
7c928300 AM |
4707 | /* Check that all sections are in a PT_LOAD segment. |
4708 | Don't check funky gdb generated core files. */ | |
4709 | if (p->p_type == PT_LOAD && bfd_get_format (abfd) != bfd_core) | |
9a83a553 AM |
4710 | { |
4711 | bfd_boolean check_vma = TRUE; | |
4712 | ||
4713 | for (i = 1; i < m->count; i++) | |
4714 | if (m->sections[i]->vma == m->sections[i - 1]->vma | |
4715 | && ELF_SECTION_SIZE (&(elf_section_data (m->sections[i]) | |
4716 | ->this_hdr), p) != 0 | |
4717 | && ELF_SECTION_SIZE (&(elf_section_data (m->sections[i - 1]) | |
4718 | ->this_hdr), p) != 0) | |
0920dee7 | 4719 | { |
9a83a553 AM |
4720 | /* Looks like we have overlays packed into the segment. */ |
4721 | check_vma = FALSE; | |
4722 | break; | |
0920dee7 | 4723 | } |
9a83a553 AM |
4724 | |
4725 | for (i = 0; i < m->count; i++) | |
4726 | { | |
4727 | Elf_Internal_Shdr *this_hdr; | |
4728 | asection *sec; | |
4729 | ||
4730 | sec = m->sections[i]; | |
4731 | this_hdr = &(elf_section_data(sec)->this_hdr); | |
f4638467 | 4732 | if (!ELF_SECTION_IN_SEGMENT_1 (this_hdr, p, check_vma, 0)) |
9a83a553 AM |
4733 | { |
4734 | (*_bfd_error_handler) | |
4735 | (_("%B: section `%A' can't be allocated in segment %d"), | |
4736 | abfd, sec, j); | |
4737 | print_segment_map (m); | |
4738 | } | |
4739 | } | |
4740 | } | |
252b5132 RH |
4741 | } |
4742 | ||
f3520d2f AM |
4743 | elf_tdata (abfd)->next_file_pos = off; |
4744 | return TRUE; | |
4745 | } | |
4746 | ||
4747 | /* Assign file positions for the other sections. */ | |
4748 | ||
4749 | static bfd_boolean | |
4750 | assign_file_positions_for_non_load_sections (bfd *abfd, | |
4751 | struct bfd_link_info *link_info) | |
4752 | { | |
4753 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4754 | Elf_Internal_Shdr **i_shdrpp; | |
4755 | Elf_Internal_Shdr **hdrpp; | |
4756 | Elf_Internal_Phdr *phdrs; | |
4757 | Elf_Internal_Phdr *p; | |
4758 | struct elf_segment_map *m; | |
4759 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4760 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4761 | file_ptr off; | |
4762 | unsigned int num_sec; | |
4763 | unsigned int i; | |
4764 | unsigned int count; | |
4765 | ||
5c182d5f AM |
4766 | i_shdrpp = elf_elfsections (abfd); |
4767 | num_sec = elf_numsections (abfd); | |
f3520d2f | 4768 | off = elf_tdata (abfd)->next_file_pos; |
5c182d5f AM |
4769 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
4770 | { | |
4771 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
4772 | Elf_Internal_Shdr *hdr; | |
4773 | ||
4774 | hdr = *hdrpp; | |
4775 | if (hdr->bfd_section != NULL | |
252e386e AM |
4776 | && (hdr->bfd_section->filepos != 0 |
4777 | || (hdr->sh_type == SHT_NOBITS | |
4778 | && hdr->contents == NULL))) | |
627b32bc | 4779 | BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos); |
5c182d5f AM |
4780 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) |
4781 | { | |
f4638467 AM |
4782 | (*_bfd_error_handler) |
4783 | (_("%B: warning: allocated section `%s' not in segment"), | |
4784 | abfd, | |
4785 | (hdr->bfd_section == NULL | |
4786 | ? "*unknown*" | |
4787 | : hdr->bfd_section->name)); | |
3ba71138 L |
4788 | /* We don't need to page align empty sections. */ |
4789 | if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0) | |
5c182d5f AM |
4790 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4791 | bed->maxpagesize); | |
4792 | else | |
4793 | off += vma_page_aligned_bias (hdr->sh_addr, off, | |
4794 | hdr->sh_addralign); | |
4795 | off = _bfd_elf_assign_file_position_for_section (hdr, off, | |
4796 | FALSE); | |
4797 | } | |
4798 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) | |
4799 | && hdr->bfd_section == NULL) | |
4800 | || hdr == i_shdrpp[tdata->symtab_section] | |
4801 | || hdr == i_shdrpp[tdata->symtab_shndx_section] | |
4802 | || hdr == i_shdrpp[tdata->strtab_section]) | |
4803 | hdr->sh_offset = -1; | |
4804 | else | |
4805 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); | |
5c182d5f AM |
4806 | } |
4807 | ||
252b5132 RH |
4808 | /* Now that we have set the section file positions, we can set up |
4809 | the file positions for the non PT_LOAD segments. */ | |
f3520d2f AM |
4810 | count = 0; |
4811 | filehdr_vaddr = 0; | |
4812 | filehdr_paddr = 0; | |
4813 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4814 | phdrs_paddr = 0; | |
4815 | phdrs = elf_tdata (abfd)->phdr; | |
4816 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4817 | m != NULL; | |
4818 | m = m->next, p++) | |
4819 | { | |
4820 | ++count; | |
4821 | if (p->p_type != PT_LOAD) | |
4822 | continue; | |
4823 | ||
4824 | if (m->includes_filehdr) | |
4825 | { | |
4826 | filehdr_vaddr = p->p_vaddr; | |
4827 | filehdr_paddr = p->p_paddr; | |
4828 | } | |
4829 | if (m->includes_phdrs) | |
4830 | { | |
4831 | phdrs_vaddr = p->p_vaddr; | |
4832 | phdrs_paddr = p->p_paddr; | |
4833 | if (m->includes_filehdr) | |
4834 | { | |
4835 | phdrs_vaddr += bed->s->sizeof_ehdr; | |
4836 | phdrs_paddr += bed->s->sizeof_ehdr; | |
4837 | } | |
4838 | } | |
4839 | } | |
4840 | ||
252b5132 RH |
4841 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; |
4842 | m != NULL; | |
4843 | m = m->next, p++) | |
4844 | { | |
129af99f | 4845 | if (p->p_type == PT_GNU_RELRO) |
252b5132 | 4846 | { |
b84a33b5 AM |
4847 | const Elf_Internal_Phdr *lp; |
4848 | ||
129af99f | 4849 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); |
1ea63fd2 | 4850 | |
129af99f | 4851 | if (link_info != NULL) |
8c37241b | 4852 | { |
129af99f AS |
4853 | /* During linking the range of the RELRO segment is passed |
4854 | in link_info. */ | |
8c37241b JJ |
4855 | for (lp = phdrs; lp < phdrs + count; ++lp) |
4856 | { | |
4857 | if (lp->p_type == PT_LOAD | |
8c37241b | 4858 | && lp->p_vaddr >= link_info->relro_start |
b84a33b5 AM |
4859 | && lp->p_vaddr < link_info->relro_end |
4860 | && lp->p_vaddr + lp->p_filesz >= link_info->relro_end) | |
8c37241b JJ |
4861 | break; |
4862 | } | |
8c37241b | 4863 | } |
129af99f AS |
4864 | else |
4865 | { | |
4866 | /* Otherwise we are copying an executable or shared | |
b84a33b5 | 4867 | library, but we need to use the same linker logic. */ |
129af99f AS |
4868 | for (lp = phdrs; lp < phdrs + count; ++lp) |
4869 | { | |
4870 | if (lp->p_type == PT_LOAD | |
4871 | && lp->p_paddr == p->p_paddr) | |
4872 | break; | |
4873 | } | |
b84a33b5 AM |
4874 | } |
4875 | ||
4876 | if (lp < phdrs + count) | |
4877 | { | |
4878 | p->p_vaddr = lp->p_vaddr; | |
4879 | p->p_paddr = lp->p_paddr; | |
4880 | p->p_offset = lp->p_offset; | |
4881 | if (link_info != NULL) | |
4882 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4883 | else if (m->p_size_valid) | |
4884 | p->p_filesz = m->p_size; | |
129af99f AS |
4885 | else |
4886 | abort (); | |
b84a33b5 AM |
4887 | p->p_memsz = p->p_filesz; |
4888 | p->p_align = 1; | |
4889 | p->p_flags = (lp->p_flags & ~PF_W); | |
129af99f | 4890 | } |
9433b9b1 | 4891 | else |
b84a33b5 AM |
4892 | { |
4893 | memset (p, 0, sizeof *p); | |
4894 | p->p_type = PT_NULL; | |
4895 | } | |
129af99f AS |
4896 | } |
4897 | else if (m->count != 0) | |
4898 | { | |
4899 | if (p->p_type != PT_LOAD | |
4900 | && (p->p_type != PT_NOTE | |
4901 | || bfd_get_format (abfd) != bfd_core)) | |
4902 | { | |
4903 | Elf_Internal_Shdr *hdr; | |
4904 | asection *sect; | |
4905 | ||
4906 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); | |
4907 | ||
4908 | sect = m->sections[m->count - 1]; | |
4909 | hdr = &elf_section_data (sect)->this_hdr; | |
4910 | p->p_filesz = sect->filepos - m->sections[0]->filepos; | |
4911 | if (hdr->sh_type != SHT_NOBITS) | |
4912 | p->p_filesz += hdr->sh_size; | |
4913 | p->p_offset = m->sections[0]->filepos; | |
4914 | } | |
4915 | } | |
4916 | else if (m->includes_filehdr) | |
4917 | { | |
4918 | p->p_vaddr = filehdr_vaddr; | |
4919 | if (! m->p_paddr_valid) | |
4920 | p->p_paddr = filehdr_paddr; | |
4921 | } | |
4922 | else if (m->includes_phdrs) | |
4923 | { | |
4924 | p->p_vaddr = phdrs_vaddr; | |
4925 | if (! m->p_paddr_valid) | |
4926 | p->p_paddr = phdrs_paddr; | |
252b5132 RH |
4927 | } |
4928 | } | |
4929 | ||
252b5132 RH |
4930 | elf_tdata (abfd)->next_file_pos = off; |
4931 | ||
b34976b6 | 4932 | return TRUE; |
252b5132 RH |
4933 | } |
4934 | ||
252b5132 RH |
4935 | /* Work out the file positions of all the sections. This is called by |
4936 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4937 | VMAs must be known before this is called. | |
4938 | ||
e0638f70 AM |
4939 | Reloc sections come in two flavours: Those processed specially as |
4940 | "side-channel" data attached to a section to which they apply, and | |
4941 | those that bfd doesn't process as relocations. The latter sort are | |
4942 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4943 | consider the former sort here, unless they form part of the loadable | |
4944 | image. Reloc sections not assigned here will be handled later by | |
4945 | assign_file_positions_for_relocs. | |
252b5132 RH |
4946 | |
4947 | We also don't set the positions of the .symtab and .strtab here. */ | |
4948 | ||
b34976b6 | 4949 | static bfd_boolean |
c84fca4d AO |
4950 | assign_file_positions_except_relocs (bfd *abfd, |
4951 | struct bfd_link_info *link_info) | |
252b5132 | 4952 | { |
5c182d5f AM |
4953 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
4954 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 4955 | file_ptr off; |
9c5bfbb7 | 4956 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4957 | |
4958 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4959 | && bfd_get_format (abfd) != bfd_core) | |
4960 | { | |
5c182d5f AM |
4961 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); |
4962 | unsigned int num_sec = elf_numsections (abfd); | |
252b5132 RH |
4963 | Elf_Internal_Shdr **hdrpp; |
4964 | unsigned int i; | |
4965 | ||
4966 | /* Start after the ELF header. */ | |
4967 | off = i_ehdrp->e_ehsize; | |
4968 | ||
4969 | /* We are not creating an executable, which means that we are | |
4970 | not creating a program header, and that the actual order of | |
4971 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4972 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4973 | { |
4974 | Elf_Internal_Shdr *hdr; | |
4975 | ||
4976 | hdr = *hdrpp; | |
e0638f70 AM |
4977 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4978 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4979 | || i == tdata->symtab_section |
4980 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4981 | || i == tdata->strtab_section) |
4982 | { | |
4983 | hdr->sh_offset = -1; | |
252b5132 | 4984 | } |
9ad5cbcf | 4985 | else |
b34976b6 | 4986 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
4987 | } |
4988 | } | |
4989 | else | |
4990 | { | |
f3520d2f AM |
4991 | unsigned int alloc; |
4992 | ||
252b5132 | 4993 | /* Assign file positions for the loaded sections based on the |
08a40648 | 4994 | assignment of sections to segments. */ |
f3520d2f AM |
4995 | if (!assign_file_positions_for_load_sections (abfd, link_info)) |
4996 | return FALSE; | |
4997 | ||
4998 | /* And for non-load sections. */ | |
4999 | if (!assign_file_positions_for_non_load_sections (abfd, link_info)) | |
5000 | return FALSE; | |
5001 | ||
e36284ab AM |
5002 | if (bed->elf_backend_modify_program_headers != NULL) |
5003 | { | |
5004 | if (!(*bed->elf_backend_modify_program_headers) (abfd, link_info)) | |
5005 | return FALSE; | |
5006 | } | |
5007 | ||
f3520d2f AM |
5008 | /* Write out the program headers. */ |
5009 | alloc = tdata->program_header_size / bed->s->sizeof_phdr; | |
5010 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 | |
5011 | || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0) | |
b34976b6 | 5012 | return FALSE; |
252b5132 | 5013 | |
5c182d5f | 5014 | off = tdata->next_file_pos; |
252b5132 RH |
5015 | } |
5016 | ||
5017 | /* Place the section headers. */ | |
45d6a902 | 5018 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
5019 | i_ehdrp->e_shoff = off; |
5020 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
5021 | ||
5c182d5f | 5022 | tdata->next_file_pos = off; |
252b5132 | 5023 | |
b34976b6 | 5024 | return TRUE; |
252b5132 RH |
5025 | } |
5026 | ||
b34976b6 | 5027 | static bfd_boolean |
217aa764 | 5028 | prep_headers (bfd *abfd) |
252b5132 | 5029 | { |
3d540e93 | 5030 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form. */ |
2b0f7ef9 | 5031 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 5032 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
5033 | |
5034 | i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 5035 | |
2b0f7ef9 | 5036 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 5037 | if (shstrtab == NULL) |
b34976b6 | 5038 | return FALSE; |
252b5132 RH |
5039 | |
5040 | elf_shstrtab (abfd) = shstrtab; | |
5041 | ||
5042 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
5043 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
5044 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
5045 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
5046 | ||
5047 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
5048 | i_ehdrp->e_ident[EI_DATA] = | |
5049 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
5050 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
5051 | ||
252b5132 RH |
5052 | if ((abfd->flags & DYNAMIC) != 0) |
5053 | i_ehdrp->e_type = ET_DYN; | |
5054 | else if ((abfd->flags & EXEC_P) != 0) | |
5055 | i_ehdrp->e_type = ET_EXEC; | |
5056 | else if (bfd_get_format (abfd) == bfd_core) | |
5057 | i_ehdrp->e_type = ET_CORE; | |
5058 | else | |
5059 | i_ehdrp->e_type = ET_REL; | |
5060 | ||
5061 | switch (bfd_get_arch (abfd)) | |
5062 | { | |
5063 | case bfd_arch_unknown: | |
5064 | i_ehdrp->e_machine = EM_NONE; | |
5065 | break; | |
aa4f99bb AO |
5066 | |
5067 | /* There used to be a long list of cases here, each one setting | |
5068 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
5069 | in the corresponding bfd definition. To avoid duplication, | |
5070 | the switch was removed. Machines that need special handling | |
5071 | can generally do it in elf_backend_final_write_processing(), | |
5072 | unless they need the information earlier than the final write. | |
5073 | Such need can generally be supplied by replacing the tests for | |
5074 | e_machine with the conditions used to determine it. */ | |
252b5132 | 5075 | default: |
9c5bfbb7 AM |
5076 | i_ehdrp->e_machine = bed->elf_machine_code; |
5077 | } | |
aa4f99bb | 5078 | |
252b5132 RH |
5079 | i_ehdrp->e_version = bed->s->ev_current; |
5080 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
5081 | ||
c044fabd | 5082 | /* No program header, for now. */ |
252b5132 RH |
5083 | i_ehdrp->e_phoff = 0; |
5084 | i_ehdrp->e_phentsize = 0; | |
5085 | i_ehdrp->e_phnum = 0; | |
5086 | ||
c044fabd | 5087 | /* Each bfd section is section header entry. */ |
252b5132 RH |
5088 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
5089 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
5090 | ||
c044fabd | 5091 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 5092 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
5093 | /* It all happens later. */ |
5094 | ; | |
252b5132 RH |
5095 | else |
5096 | { | |
5097 | i_ehdrp->e_phentsize = 0; | |
252b5132 RH |
5098 | i_ehdrp->e_phoff = 0; |
5099 | } | |
5100 | ||
5101 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 5102 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 5103 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 5104 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 5105 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 5106 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
5107 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
5108 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
5109 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 5110 | return FALSE; |
252b5132 | 5111 | |
b34976b6 | 5112 | return TRUE; |
252b5132 RH |
5113 | } |
5114 | ||
5115 | /* Assign file positions for all the reloc sections which are not part | |
5116 | of the loadable file image. */ | |
5117 | ||
5118 | void | |
217aa764 | 5119 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
5120 | { |
5121 | file_ptr off; | |
9ad5cbcf | 5122 | unsigned int i, num_sec; |
252b5132 RH |
5123 | Elf_Internal_Shdr **shdrpp; |
5124 | ||
5125 | off = elf_tdata (abfd)->next_file_pos; | |
5126 | ||
9ad5cbcf AM |
5127 | num_sec = elf_numsections (abfd); |
5128 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
5129 | { |
5130 | Elf_Internal_Shdr *shdrp; | |
5131 | ||
5132 | shdrp = *shdrpp; | |
5133 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
5134 | && shdrp->sh_offset == -1) | |
b34976b6 | 5135 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
5136 | } |
5137 | ||
5138 | elf_tdata (abfd)->next_file_pos = off; | |
5139 | } | |
5140 | ||
b34976b6 | 5141 | bfd_boolean |
217aa764 | 5142 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 5143 | { |
9c5bfbb7 | 5144 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 5145 | Elf_Internal_Shdr **i_shdrp; |
b34976b6 | 5146 | bfd_boolean failed; |
9ad5cbcf | 5147 | unsigned int count, num_sec; |
252b5132 RH |
5148 | |
5149 | if (! abfd->output_has_begun | |
217aa764 | 5150 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 5151 | return FALSE; |
252b5132 RH |
5152 | |
5153 | i_shdrp = elf_elfsections (abfd); | |
252b5132 | 5154 | |
b34976b6 | 5155 | failed = FALSE; |
252b5132 RH |
5156 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
5157 | if (failed) | |
b34976b6 | 5158 | return FALSE; |
252b5132 RH |
5159 | |
5160 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
5161 | ||
c044fabd | 5162 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
5163 | num_sec = elf_numsections (abfd); |
5164 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
5165 | { |
5166 | if (bed->elf_backend_section_processing) | |
5167 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
5168 | if (i_shdrp[count]->contents) | |
5169 | { | |
dc810e39 AM |
5170 | bfd_size_type amt = i_shdrp[count]->sh_size; |
5171 | ||
252b5132 | 5172 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 5173 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 5174 | return FALSE; |
252b5132 RH |
5175 | } |
5176 | } | |
5177 | ||
5178 | /* Write out the section header names. */ | |
26ae6d5e DJ |
5179 | if (elf_shstrtab (abfd) != NULL |
5180 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
08a40648 | 5181 | || !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) |
b34976b6 | 5182 | return FALSE; |
252b5132 RH |
5183 | |
5184 | if (bed->elf_backend_final_write_processing) | |
5185 | (*bed->elf_backend_final_write_processing) (abfd, | |
5186 | elf_tdata (abfd)->linker); | |
5187 | ||
ff59fc36 RM |
5188 | if (!bed->s->write_shdrs_and_ehdr (abfd)) |
5189 | return FALSE; | |
5190 | ||
5191 | /* This is last since write_shdrs_and_ehdr can touch i_shdrp[0]. */ | |
bfb53a4f RM |
5192 | if (elf_tdata (abfd)->after_write_object_contents) |
5193 | return (*elf_tdata (abfd)->after_write_object_contents) (abfd); | |
ff59fc36 RM |
5194 | |
5195 | return TRUE; | |
252b5132 RH |
5196 | } |
5197 | ||
b34976b6 | 5198 | bfd_boolean |
217aa764 | 5199 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 5200 | { |
c044fabd | 5201 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
5202 | return _bfd_elf_write_object_contents (abfd); |
5203 | } | |
c044fabd KH |
5204 | |
5205 | /* Given a section, search the header to find them. */ | |
5206 | ||
cb33740c | 5207 | unsigned int |
198beae2 | 5208 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 5209 | { |
9c5bfbb7 | 5210 | const struct elf_backend_data *bed; |
91d6fa6a | 5211 | unsigned int sec_index; |
252b5132 | 5212 | |
9ad5cbcf AM |
5213 | if (elf_section_data (asect) != NULL |
5214 | && elf_section_data (asect)->this_idx != 0) | |
5215 | return elf_section_data (asect)->this_idx; | |
5216 | ||
5217 | if (bfd_is_abs_section (asect)) | |
91d6fa6a | 5218 | sec_index = SHN_ABS; |
af746e92 | 5219 | else if (bfd_is_com_section (asect)) |
91d6fa6a | 5220 | sec_index = SHN_COMMON; |
af746e92 | 5221 | else if (bfd_is_und_section (asect)) |
91d6fa6a | 5222 | sec_index = SHN_UNDEF; |
af746e92 | 5223 | else |
91d6fa6a | 5224 | sec_index = SHN_BAD; |
252b5132 | 5225 | |
af746e92 | 5226 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
5227 | if (bed->elf_backend_section_from_bfd_section) |
5228 | { | |
91d6fa6a | 5229 | int retval = sec_index; |
9ad5cbcf | 5230 | |
af746e92 AM |
5231 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
5232 | return retval; | |
252b5132 RH |
5233 | } |
5234 | ||
91d6fa6a | 5235 | if (sec_index == SHN_BAD) |
af746e92 | 5236 | bfd_set_error (bfd_error_nonrepresentable_section); |
252b5132 | 5237 | |
91d6fa6a | 5238 | return sec_index; |
252b5132 RH |
5239 | } |
5240 | ||
5241 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
5242 | on error. */ | |
5243 | ||
5244 | int | |
217aa764 | 5245 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
5246 | { |
5247 | asymbol *asym_ptr = *asym_ptr_ptr; | |
5248 | int idx; | |
5249 | flagword flags = asym_ptr->flags; | |
5250 | ||
5251 | /* When gas creates relocations against local labels, it creates its | |
5252 | own symbol for the section, but does put the symbol into the | |
5253 | symbol chain, so udata is 0. When the linker is generating | |
5254 | relocatable output, this section symbol may be for one of the | |
5255 | input sections rather than the output section. */ | |
5256 | if (asym_ptr->udata.i == 0 | |
5257 | && (flags & BSF_SECTION_SYM) | |
5258 | && asym_ptr->section) | |
5259 | { | |
5372391b | 5260 | asection *sec; |
252b5132 RH |
5261 | int indx; |
5262 | ||
5372391b AM |
5263 | sec = asym_ptr->section; |
5264 | if (sec->owner != abfd && sec->output_section != NULL) | |
5265 | sec = sec->output_section; | |
5266 | if (sec->owner == abfd | |
5267 | && (indx = sec->index) < elf_num_section_syms (abfd) | |
4e89ac30 | 5268 | && elf_section_syms (abfd)[indx] != NULL) |
252b5132 RH |
5269 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
5270 | } | |
5271 | ||
5272 | idx = asym_ptr->udata.i; | |
5273 | ||
5274 | if (idx == 0) | |
5275 | { | |
5276 | /* This case can occur when using --strip-symbol on a symbol | |
08a40648 | 5277 | which is used in a relocation entry. */ |
252b5132 | 5278 | (*_bfd_error_handler) |
d003868e AM |
5279 | (_("%B: symbol `%s' required but not present"), |
5280 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
5281 | bfd_set_error (bfd_error_no_symbols); |
5282 | return -1; | |
5283 | } | |
5284 | ||
5285 | #if DEBUG & 4 | |
5286 | { | |
5287 | fprintf (stderr, | |
9ccb8af9 AM |
5288 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx\n", |
5289 | (long) asym_ptr, asym_ptr->name, idx, (long) flags); | |
252b5132 RH |
5290 | fflush (stderr); |
5291 | } | |
5292 | #endif | |
5293 | ||
5294 | return idx; | |
5295 | } | |
5296 | ||
84d1d650 | 5297 | /* Rewrite program header information. */ |
252b5132 | 5298 | |
b34976b6 | 5299 | static bfd_boolean |
84d1d650 | 5300 | rewrite_elf_program_header (bfd *ibfd, bfd *obfd) |
252b5132 | 5301 | { |
b34976b6 AM |
5302 | Elf_Internal_Ehdr *iehdr; |
5303 | struct elf_segment_map *map; | |
5304 | struct elf_segment_map *map_first; | |
5305 | struct elf_segment_map **pointer_to_map; | |
5306 | Elf_Internal_Phdr *segment; | |
5307 | asection *section; | |
5308 | unsigned int i; | |
5309 | unsigned int num_segments; | |
5310 | bfd_boolean phdr_included = FALSE; | |
5c44b38e | 5311 | bfd_boolean p_paddr_valid; |
b34976b6 AM |
5312 | bfd_vma maxpagesize; |
5313 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5314 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5315 | const struct elf_backend_data *bed; |
bc67d8a6 | 5316 | |
caf47ea6 | 5317 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5318 | iehdr = elf_elfheader (ibfd); |
5319 | ||
bc67d8a6 | 5320 | map_first = NULL; |
c044fabd | 5321 | pointer_to_map = &map_first; |
252b5132 RH |
5322 | |
5323 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5324 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5325 | ||
5326 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5327 | #define SEGMENT_END(segment, start) \ |
5328 | (start + (segment->p_memsz > segment->p_filesz \ | |
5329 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5330 | |
eecdbe52 JJ |
5331 | #define SECTION_SIZE(section, segment) \ |
5332 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5333 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5334 | ? section->size : 0) |
eecdbe52 | 5335 | |
b34976b6 | 5336 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5337 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5338 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5339 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5340 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5341 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5342 | |
b34976b6 | 5343 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5344 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5345 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5346 | (section->lma >= base \ | |
eecdbe52 | 5347 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5348 | <= SEGMENT_END (segment, base))) |
252b5132 | 5349 | |
0efc80c8 L |
5350 | /* Handle PT_NOTE segment. */ |
5351 | #define IS_NOTE(p, s) \ | |
aecc8f8a | 5352 | (p->p_type == PT_NOTE \ |
0efc80c8 | 5353 | && elf_section_type (s) == SHT_NOTE \ |
aecc8f8a | 5354 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 5355 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5356 | <= p->p_offset + p->p_filesz)) |
252b5132 | 5357 | |
0efc80c8 L |
5358 | /* Special case: corefile "NOTE" section containing regs, prpsinfo |
5359 | etc. */ | |
5360 | #define IS_COREFILE_NOTE(p, s) \ | |
5361 | (IS_NOTE (p, s) \ | |
5362 | && bfd_get_format (ibfd) == bfd_core \ | |
5363 | && s->vma == 0 \ | |
5364 | && s->lma == 0) | |
5365 | ||
252b5132 RH |
5366 | /* The complicated case when p_vaddr is 0 is to handle the Solaris |
5367 | linker, which generates a PT_INTERP section with p_vaddr and | |
5368 | p_memsz set to 0. */ | |
aecc8f8a AM |
5369 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5370 | (p->p_vaddr == 0 \ | |
5371 | && p->p_paddr == 0 \ | |
5372 | && p->p_memsz == 0 \ | |
5373 | && p->p_filesz > 0 \ | |
5374 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5375 | && s->size > 0 \ |
aecc8f8a | 5376 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 5377 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5378 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5379 | |
bc67d8a6 NC |
5380 | /* Decide if the given section should be included in the given segment. |
5381 | A section will be included if: | |
f5ffc919 | 5382 | 1. It is within the address space of the segment -- we use the LMA |
08a40648 | 5383 | if that is set for the segment and the VMA otherwise, |
0efc80c8 L |
5384 | 2. It is an allocated section or a NOTE section in a PT_NOTE |
5385 | segment. | |
bc67d8a6 | 5386 | 3. There is an output section associated with it, |
eecdbe52 | 5387 | 4. The section has not already been allocated to a previous segment. |
2b05f1b7 | 5388 | 5. PT_GNU_STACK segments do not include any sections. |
03394ac9 | 5389 | 6. PT_TLS segment includes only SHF_TLS sections. |
6f79b219 JJ |
5390 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5391 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
08a40648 | 5392 | (with the possible exception of .dynamic). */ |
9f17e2a6 | 5393 | #define IS_SECTION_IN_INPUT_SEGMENT(section, segment, bed) \ |
2b05f1b7 L |
5394 | ((((segment->p_paddr \ |
5395 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5396 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
5397 | && (section->flags & SEC_ALLOC) != 0) \ | |
0efc80c8 | 5398 | || IS_NOTE (segment, section)) \ |
2b05f1b7 L |
5399 | && segment->p_type != PT_GNU_STACK \ |
5400 | && (segment->p_type != PT_TLS \ | |
5401 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5402 | && (segment->p_type == PT_LOAD \ | |
5403 | || segment->p_type == PT_TLS \ | |
5404 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
5405 | && (segment->p_type != PT_DYNAMIC \ | |
5406 | || SECTION_SIZE (section, segment) > 0 \ | |
5407 | || (segment->p_paddr \ | |
5408 | ? segment->p_paddr != section->lma \ | |
5409 | : segment->p_vaddr != section->vma) \ | |
5410 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5411 | == 0)) \ | |
0067a569 | 5412 | && !section->segment_mark) |
bc67d8a6 | 5413 | |
9f17e2a6 L |
5414 | /* If the output section of a section in the input segment is NULL, |
5415 | it is removed from the corresponding output segment. */ | |
5416 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ | |
5417 | (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed) \ | |
5418 | && section->output_section != NULL) | |
5419 | ||
b34976b6 | 5420 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5421 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5422 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5423 | ||
5424 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5425 | their VMA address ranges and their LMA address ranges overlap. | |
5426 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5427 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5428 | to the same VMA range, but with the .data section mapped to a different | |
5429 | LMA. */ | |
aecc8f8a | 5430 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea | 5431 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
08a40648 | 5432 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ |
b5f852ea | 5433 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ |
08a40648 | 5434 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) |
bc67d8a6 NC |
5435 | |
5436 | /* Initialise the segment mark field. */ | |
5437 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5438 | section->segment_mark = FALSE; |
bc67d8a6 | 5439 | |
5c44b38e AM |
5440 | /* The Solaris linker creates program headers in which all the |
5441 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5442 | file, we get confused. Check for this case, and if we find it | |
5443 | don't set the p_paddr_valid fields. */ | |
5444 | p_paddr_valid = FALSE; | |
5445 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5446 | i < num_segments; | |
5447 | i++, segment++) | |
5448 | if (segment->p_paddr != 0) | |
5449 | { | |
5450 | p_paddr_valid = TRUE; | |
5451 | break; | |
5452 | } | |
5453 | ||
252b5132 | 5454 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5455 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5456 | in the loadable segments. These can be created by weird |
aecc8f8a | 5457 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5458 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5459 | i < num_segments; | |
c044fabd | 5460 | i++, segment++) |
252b5132 | 5461 | { |
252b5132 | 5462 | unsigned int j; |
c044fabd | 5463 | Elf_Internal_Phdr *segment2; |
252b5132 | 5464 | |
aecc8f8a AM |
5465 | if (segment->p_type == PT_INTERP) |
5466 | for (section = ibfd->sections; section; section = section->next) | |
5467 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5468 | { | |
5469 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5470 | assignment code will work. */ |
aecc8f8a AM |
5471 | segment->p_vaddr = section->vma; |
5472 | break; | |
5473 | } | |
5474 | ||
bc67d8a6 | 5475 | if (segment->p_type != PT_LOAD) |
b10a8ae0 L |
5476 | { |
5477 | /* Remove PT_GNU_RELRO segment. */ | |
5478 | if (segment->p_type == PT_GNU_RELRO) | |
5479 | segment->p_type = PT_NULL; | |
5480 | continue; | |
5481 | } | |
c044fabd | 5482 | |
bc67d8a6 | 5483 | /* Determine if this segment overlaps any previous segments. */ |
0067a569 | 5484 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2++) |
bc67d8a6 NC |
5485 | { |
5486 | bfd_signed_vma extra_length; | |
c044fabd | 5487 | |
bc67d8a6 | 5488 | if (segment2->p_type != PT_LOAD |
0067a569 | 5489 | || !SEGMENT_OVERLAPS (segment, segment2)) |
bc67d8a6 | 5490 | continue; |
c044fabd | 5491 | |
bc67d8a6 NC |
5492 | /* Merge the two segments together. */ |
5493 | if (segment2->p_vaddr < segment->p_vaddr) | |
5494 | { | |
c044fabd | 5495 | /* Extend SEGMENT2 to include SEGMENT and then delete |
08a40648 | 5496 | SEGMENT. */ |
0067a569 AM |
5497 | extra_length = (SEGMENT_END (segment, segment->p_vaddr) |
5498 | - SEGMENT_END (segment2, segment2->p_vaddr)); | |
c044fabd | 5499 | |
bc67d8a6 NC |
5500 | if (extra_length > 0) |
5501 | { | |
0067a569 | 5502 | segment2->p_memsz += extra_length; |
bc67d8a6 NC |
5503 | segment2->p_filesz += extra_length; |
5504 | } | |
c044fabd | 5505 | |
bc67d8a6 | 5506 | segment->p_type = PT_NULL; |
c044fabd | 5507 | |
bc67d8a6 NC |
5508 | /* Since we have deleted P we must restart the outer loop. */ |
5509 | i = 0; | |
5510 | segment = elf_tdata (ibfd)->phdr; | |
5511 | break; | |
5512 | } | |
5513 | else | |
5514 | { | |
c044fabd | 5515 | /* Extend SEGMENT to include SEGMENT2 and then delete |
08a40648 | 5516 | SEGMENT2. */ |
0067a569 AM |
5517 | extra_length = (SEGMENT_END (segment2, segment2->p_vaddr) |
5518 | - SEGMENT_END (segment, segment->p_vaddr)); | |
c044fabd | 5519 | |
bc67d8a6 NC |
5520 | if (extra_length > 0) |
5521 | { | |
0067a569 | 5522 | segment->p_memsz += extra_length; |
bc67d8a6 NC |
5523 | segment->p_filesz += extra_length; |
5524 | } | |
c044fabd | 5525 | |
bc67d8a6 NC |
5526 | segment2->p_type = PT_NULL; |
5527 | } | |
5528 | } | |
5529 | } | |
c044fabd | 5530 | |
bc67d8a6 NC |
5531 | /* The second scan attempts to assign sections to segments. */ |
5532 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5533 | i < num_segments; | |
0067a569 | 5534 | i++, segment++) |
bc67d8a6 | 5535 | { |
0067a569 AM |
5536 | unsigned int section_count; |
5537 | asection **sections; | |
5538 | asection *output_section; | |
5539 | unsigned int isec; | |
5540 | bfd_vma matching_lma; | |
5541 | bfd_vma suggested_lma; | |
5542 | unsigned int j; | |
dc810e39 | 5543 | bfd_size_type amt; |
0067a569 AM |
5544 | asection *first_section; |
5545 | bfd_boolean first_matching_lma; | |
5546 | bfd_boolean first_suggested_lma; | |
bc67d8a6 NC |
5547 | |
5548 | if (segment->p_type == PT_NULL) | |
5549 | continue; | |
c044fabd | 5550 | |
9f17e2a6 | 5551 | first_section = NULL; |
bc67d8a6 | 5552 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5553 | for (section = ibfd->sections, section_count = 0; |
5554 | section != NULL; | |
5555 | section = section->next) | |
9f17e2a6 L |
5556 | { |
5557 | /* Find the first section in the input segment, which may be | |
5558 | removed from the corresponding output segment. */ | |
5559 | if (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed)) | |
5560 | { | |
5561 | if (first_section == NULL) | |
5562 | first_section = section; | |
5563 | if (section->output_section != NULL) | |
5564 | ++section_count; | |
5565 | } | |
5566 | } | |
811072d8 | 5567 | |
b5f852ea NC |
5568 | /* Allocate a segment map big enough to contain |
5569 | all of the sections we have selected. */ | |
dc810e39 AM |
5570 | amt = sizeof (struct elf_segment_map); |
5571 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
a50b1753 | 5572 | map = (struct elf_segment_map *) bfd_zalloc (obfd, amt); |
bc67d8a6 | 5573 | if (map == NULL) |
b34976b6 | 5574 | return FALSE; |
252b5132 RH |
5575 | |
5576 | /* Initialise the fields of the segment map. Default to | |
5577 | using the physical address of the segment in the input BFD. */ | |
0067a569 AM |
5578 | map->next = NULL; |
5579 | map->p_type = segment->p_type; | |
5580 | map->p_flags = segment->p_flags; | |
bc67d8a6 | 5581 | map->p_flags_valid = 1; |
55d55ac7 | 5582 | |
9f17e2a6 L |
5583 | /* If the first section in the input segment is removed, there is |
5584 | no need to preserve segment physical address in the corresponding | |
5585 | output segment. */ | |
945c025a | 5586 | if (!first_section || first_section->output_section != NULL) |
9f17e2a6 L |
5587 | { |
5588 | map->p_paddr = segment->p_paddr; | |
5c44b38e | 5589 | map->p_paddr_valid = p_paddr_valid; |
9f17e2a6 | 5590 | } |
252b5132 RH |
5591 | |
5592 | /* Determine if this segment contains the ELF file header | |
5593 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5594 | map->includes_filehdr = (segment->p_offset == 0 |
5595 | && segment->p_filesz >= iehdr->e_ehsize); | |
bc67d8a6 | 5596 | map->includes_phdrs = 0; |
252b5132 | 5597 | |
0067a569 | 5598 | if (!phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5599 | { |
bc67d8a6 NC |
5600 | map->includes_phdrs = |
5601 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5602 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5603 | >= ((bfd_vma) iehdr->e_phoff |
5604 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5605 | |
bc67d8a6 | 5606 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5607 | phdr_included = TRUE; |
252b5132 RH |
5608 | } |
5609 | ||
bc67d8a6 | 5610 | if (section_count == 0) |
252b5132 RH |
5611 | { |
5612 | /* Special segments, such as the PT_PHDR segment, may contain | |
5613 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5614 | something. They are allowed by the ELF spec however, so only |
5615 | a warning is produced. */ | |
bc67d8a6 | 5616 | if (segment->p_type == PT_LOAD) |
0067a569 AM |
5617 | (*_bfd_error_handler) (_("%B: warning: Empty loadable segment" |
5618 | " detected, is this intentional ?\n"), | |
5619 | ibfd); | |
252b5132 | 5620 | |
bc67d8a6 | 5621 | map->count = 0; |
c044fabd KH |
5622 | *pointer_to_map = map; |
5623 | pointer_to_map = &map->next; | |
252b5132 RH |
5624 | |
5625 | continue; | |
5626 | } | |
5627 | ||
5628 | /* Now scan the sections in the input BFD again and attempt | |
5629 | to add their corresponding output sections to the segment map. | |
5630 | The problem here is how to handle an output section which has | |
5631 | been moved (ie had its LMA changed). There are four possibilities: | |
5632 | ||
5633 | 1. None of the sections have been moved. | |
5634 | In this case we can continue to use the segment LMA from the | |
5635 | input BFD. | |
5636 | ||
5637 | 2. All of the sections have been moved by the same amount. | |
5638 | In this case we can change the segment's LMA to match the LMA | |
5639 | of the first section. | |
5640 | ||
5641 | 3. Some of the sections have been moved, others have not. | |
5642 | In this case those sections which have not been moved can be | |
5643 | placed in the current segment which will have to have its size, | |
5644 | and possibly its LMA changed, and a new segment or segments will | |
5645 | have to be created to contain the other sections. | |
5646 | ||
b5f852ea | 5647 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5648 | In this case we can change the segment's LMA to match the LMA |
5649 | of the first section and we will have to create a new segment | |
5650 | or segments to contain the other sections. | |
5651 | ||
5652 | In order to save time, we allocate an array to hold the section | |
5653 | pointers that we are interested in. As these sections get assigned | |
5654 | to a segment, they are removed from this array. */ | |
5655 | ||
a50b1753 | 5656 | sections = (asection **) bfd_malloc2 (section_count, sizeof (asection *)); |
252b5132 | 5657 | if (sections == NULL) |
b34976b6 | 5658 | return FALSE; |
252b5132 RH |
5659 | |
5660 | /* Step One: Scan for segment vs section LMA conflicts. | |
5661 | Also add the sections to the section array allocated above. | |
5662 | Also add the sections to the current segment. In the common | |
5663 | case, where the sections have not been moved, this means that | |
5664 | we have completely filled the segment, and there is nothing | |
5665 | more to do. */ | |
252b5132 | 5666 | isec = 0; |
72730e0c | 5667 | matching_lma = 0; |
252b5132 | 5668 | suggested_lma = 0; |
0067a569 AM |
5669 | first_matching_lma = TRUE; |
5670 | first_suggested_lma = TRUE; | |
252b5132 | 5671 | |
147d51c2 | 5672 | for (section = ibfd->sections; |
bc67d8a6 NC |
5673 | section != NULL; |
5674 | section = section->next) | |
147d51c2 L |
5675 | if (section == first_section) |
5676 | break; | |
5677 | ||
5678 | for (j = 0; section != NULL; section = section->next) | |
252b5132 | 5679 | { |
caf47ea6 | 5680 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5681 | { |
bc67d8a6 NC |
5682 | output_section = section->output_section; |
5683 | ||
0067a569 | 5684 | sections[j++] = section; |
252b5132 RH |
5685 | |
5686 | /* The Solaris native linker always sets p_paddr to 0. | |
5687 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5688 | correct value. Note - some backends require that |
5689 | p_paddr be left as zero. */ | |
5c44b38e | 5690 | if (!p_paddr_valid |
4455705d | 5691 | && segment->p_vaddr != 0 |
0067a569 | 5692 | && !bed->want_p_paddr_set_to_zero |
252b5132 | 5693 | && isec == 0 |
bc67d8a6 | 5694 | && output_section->lma != 0 |
0067a569 AM |
5695 | && output_section->vma == (segment->p_vaddr |
5696 | + (map->includes_filehdr | |
5697 | ? iehdr->e_ehsize | |
5698 | : 0) | |
5699 | + (map->includes_phdrs | |
5700 | ? (iehdr->e_phnum | |
5701 | * iehdr->e_phentsize) | |
5702 | : 0))) | |
bc67d8a6 | 5703 | map->p_paddr = segment->p_vaddr; |
252b5132 RH |
5704 | |
5705 | /* Match up the physical address of the segment with the | |
5706 | LMA address of the output section. */ | |
bc67d8a6 | 5707 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 | 5708 | || IS_COREFILE_NOTE (segment, section) |
0067a569 AM |
5709 | || (bed->want_p_paddr_set_to_zero |
5710 | && IS_CONTAINED_BY_VMA (output_section, segment))) | |
252b5132 | 5711 | { |
0067a569 AM |
5712 | if (first_matching_lma || output_section->lma < matching_lma) |
5713 | { | |
5714 | matching_lma = output_section->lma; | |
5715 | first_matching_lma = FALSE; | |
5716 | } | |
252b5132 RH |
5717 | |
5718 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5719 | then it does not overlap any other section within that |
252b5132 | 5720 | segment. */ |
0067a569 AM |
5721 | map->sections[isec++] = output_section; |
5722 | } | |
5723 | else if (first_suggested_lma) | |
5724 | { | |
5725 | suggested_lma = output_section->lma; | |
5726 | first_suggested_lma = FALSE; | |
252b5132 | 5727 | } |
147d51c2 L |
5728 | |
5729 | if (j == section_count) | |
5730 | break; | |
252b5132 RH |
5731 | } |
5732 | } | |
5733 | ||
bc67d8a6 | 5734 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5735 | |
5736 | /* Step Two: Adjust the physical address of the current segment, | |
5737 | if necessary. */ | |
bc67d8a6 | 5738 | if (isec == section_count) |
252b5132 RH |
5739 | { |
5740 | /* All of the sections fitted within the segment as currently | |
5741 | specified. This is the default case. Add the segment to | |
5742 | the list of built segments and carry on to process the next | |
5743 | program header in the input BFD. */ | |
bc67d8a6 | 5744 | map->count = section_count; |
c044fabd KH |
5745 | *pointer_to_map = map; |
5746 | pointer_to_map = &map->next; | |
08a40648 | 5747 | |
5c44b38e AM |
5748 | if (p_paddr_valid |
5749 | && !bed->want_p_paddr_set_to_zero | |
147d51c2 | 5750 | && matching_lma != map->p_paddr |
5c44b38e AM |
5751 | && !map->includes_filehdr |
5752 | && !map->includes_phdrs) | |
3271a814 NS |
5753 | /* There is some padding before the first section in the |
5754 | segment. So, we must account for that in the output | |
5755 | segment's vma. */ | |
5756 | map->p_vaddr_offset = matching_lma - map->p_paddr; | |
08a40648 | 5757 | |
252b5132 RH |
5758 | free (sections); |
5759 | continue; | |
5760 | } | |
252b5132 RH |
5761 | else |
5762 | { | |
0067a569 | 5763 | if (!first_matching_lma) |
72730e0c AM |
5764 | { |
5765 | /* At least one section fits inside the current segment. | |
5766 | Keep it, but modify its physical address to match the | |
5767 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5768 | map->p_paddr = matching_lma; |
72730e0c AM |
5769 | } |
5770 | else | |
5771 | { | |
5772 | /* None of the sections fitted inside the current segment. | |
5773 | Change the current segment's physical address to match | |
5774 | the LMA of the first section. */ | |
bc67d8a6 | 5775 | map->p_paddr = suggested_lma; |
72730e0c AM |
5776 | } |
5777 | ||
bc67d8a6 NC |
5778 | /* Offset the segment physical address from the lma |
5779 | to allow for space taken up by elf headers. */ | |
5780 | if (map->includes_filehdr) | |
010c8431 AM |
5781 | { |
5782 | if (map->p_paddr >= iehdr->e_ehsize) | |
5783 | map->p_paddr -= iehdr->e_ehsize; | |
5784 | else | |
5785 | { | |
5786 | map->includes_filehdr = FALSE; | |
5787 | map->includes_phdrs = FALSE; | |
5788 | } | |
5789 | } | |
252b5132 | 5790 | |
bc67d8a6 NC |
5791 | if (map->includes_phdrs) |
5792 | { | |
010c8431 AM |
5793 | if (map->p_paddr >= iehdr->e_phnum * iehdr->e_phentsize) |
5794 | { | |
5795 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5796 | ||
5797 | /* iehdr->e_phnum is just an estimate of the number | |
5798 | of program headers that we will need. Make a note | |
5799 | here of the number we used and the segment we chose | |
5800 | to hold these headers, so that we can adjust the | |
5801 | offset when we know the correct value. */ | |
5802 | phdr_adjust_num = iehdr->e_phnum; | |
5803 | phdr_adjust_seg = map; | |
5804 | } | |
5805 | else | |
5806 | map->includes_phdrs = FALSE; | |
bc67d8a6 | 5807 | } |
252b5132 RH |
5808 | } |
5809 | ||
5810 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5811 | those that fit to the current segment and removing them from the |
252b5132 RH |
5812 | sections array; but making sure not to leave large gaps. Once all |
5813 | possible sections have been assigned to the current segment it is | |
5814 | added to the list of built segments and if sections still remain | |
5815 | to be assigned, a new segment is constructed before repeating | |
5816 | the loop. */ | |
5817 | isec = 0; | |
5818 | do | |
5819 | { | |
bc67d8a6 | 5820 | map->count = 0; |
252b5132 | 5821 | suggested_lma = 0; |
0067a569 | 5822 | first_suggested_lma = TRUE; |
252b5132 RH |
5823 | |
5824 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5825 | for (j = 0; j < section_count; j++) |
252b5132 | 5826 | { |
bc67d8a6 | 5827 | section = sections[j]; |
252b5132 | 5828 | |
bc67d8a6 | 5829 | if (section == NULL) |
252b5132 RH |
5830 | continue; |
5831 | ||
bc67d8a6 | 5832 | output_section = section->output_section; |
252b5132 | 5833 | |
bc67d8a6 | 5834 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5835 | |
bc67d8a6 NC |
5836 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5837 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5838 | { |
bc67d8a6 | 5839 | if (map->count == 0) |
252b5132 RH |
5840 | { |
5841 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5842 | the beginning of the segment, then something is |
5843 | wrong. */ | |
0067a569 AM |
5844 | if (output_section->lma |
5845 | != (map->p_paddr | |
5846 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5847 | + (map->includes_phdrs | |
5848 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5849 | : 0))) | |
252b5132 RH |
5850 | abort (); |
5851 | } | |
5852 | else | |
5853 | { | |
0067a569 | 5854 | asection *prev_sec; |
252b5132 | 5855 | |
bc67d8a6 | 5856 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5857 | |
5858 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5859 | and the start of this section is more than |
5860 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5861 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5862 | maxpagesize) |
caf47ea6 | 5863 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
0067a569 | 5864 | || (prev_sec->lma + prev_sec->size |
079e9a2f | 5865 | > output_section->lma)) |
252b5132 | 5866 | { |
0067a569 AM |
5867 | if (first_suggested_lma) |
5868 | { | |
5869 | suggested_lma = output_section->lma; | |
5870 | first_suggested_lma = FALSE; | |
5871 | } | |
252b5132 RH |
5872 | |
5873 | continue; | |
5874 | } | |
5875 | } | |
5876 | ||
bc67d8a6 | 5877 | map->sections[map->count++] = output_section; |
252b5132 RH |
5878 | ++isec; |
5879 | sections[j] = NULL; | |
b34976b6 | 5880 | section->segment_mark = TRUE; |
252b5132 | 5881 | } |
0067a569 AM |
5882 | else if (first_suggested_lma) |
5883 | { | |
5884 | suggested_lma = output_section->lma; | |
5885 | first_suggested_lma = FALSE; | |
5886 | } | |
252b5132 RH |
5887 | } |
5888 | ||
bc67d8a6 | 5889 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5890 | |
5891 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5892 | *pointer_to_map = map; |
5893 | pointer_to_map = &map->next; | |
252b5132 | 5894 | |
bc67d8a6 | 5895 | if (isec < section_count) |
252b5132 RH |
5896 | { |
5897 | /* We still have not allocated all of the sections to | |
5898 | segments. Create a new segment here, initialise it | |
5899 | and carry on looping. */ | |
dc810e39 AM |
5900 | amt = sizeof (struct elf_segment_map); |
5901 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
a50b1753 | 5902 | map = (struct elf_segment_map *) bfd_alloc (obfd, amt); |
bc67d8a6 | 5903 | if (map == NULL) |
5ed6aba4 NC |
5904 | { |
5905 | free (sections); | |
5906 | return FALSE; | |
5907 | } | |
252b5132 RH |
5908 | |
5909 | /* Initialise the fields of the segment map. Set the physical | |
5910 | physical address to the LMA of the first section that has | |
5911 | not yet been assigned. */ | |
0067a569 AM |
5912 | map->next = NULL; |
5913 | map->p_type = segment->p_type; | |
5914 | map->p_flags = segment->p_flags; | |
5915 | map->p_flags_valid = 1; | |
5916 | map->p_paddr = suggested_lma; | |
5c44b38e | 5917 | map->p_paddr_valid = p_paddr_valid; |
bc67d8a6 | 5918 | map->includes_filehdr = 0; |
0067a569 | 5919 | map->includes_phdrs = 0; |
252b5132 RH |
5920 | } |
5921 | } | |
bc67d8a6 | 5922 | while (isec < section_count); |
252b5132 RH |
5923 | |
5924 | free (sections); | |
5925 | } | |
5926 | ||
bc67d8a6 NC |
5927 | elf_tdata (obfd)->segment_map = map_first; |
5928 | ||
5929 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5930 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5931 | the offset if necessary. */ |
5932 | if (phdr_adjust_seg != NULL) | |
5933 | { | |
5934 | unsigned int count; | |
c044fabd | 5935 | |
bc67d8a6 | 5936 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5937 | count++; |
252b5132 | 5938 | |
bc67d8a6 NC |
5939 | if (count > phdr_adjust_num) |
5940 | phdr_adjust_seg->p_paddr | |
5941 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5942 | } | |
c044fabd | 5943 | |
bc67d8a6 | 5944 | #undef SEGMENT_END |
eecdbe52 | 5945 | #undef SECTION_SIZE |
bc67d8a6 NC |
5946 | #undef IS_CONTAINED_BY_VMA |
5947 | #undef IS_CONTAINED_BY_LMA | |
0efc80c8 | 5948 | #undef IS_NOTE |
252b5132 | 5949 | #undef IS_COREFILE_NOTE |
bc67d8a6 | 5950 | #undef IS_SOLARIS_PT_INTERP |
9f17e2a6 | 5951 | #undef IS_SECTION_IN_INPUT_SEGMENT |
bc67d8a6 NC |
5952 | #undef INCLUDE_SECTION_IN_SEGMENT |
5953 | #undef SEGMENT_AFTER_SEGMENT | |
5954 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5955 | return TRUE; |
252b5132 RH |
5956 | } |
5957 | ||
84d1d650 L |
5958 | /* Copy ELF program header information. */ |
5959 | ||
5960 | static bfd_boolean | |
5961 | copy_elf_program_header (bfd *ibfd, bfd *obfd) | |
5962 | { | |
5963 | Elf_Internal_Ehdr *iehdr; | |
5964 | struct elf_segment_map *map; | |
5965 | struct elf_segment_map *map_first; | |
5966 | struct elf_segment_map **pointer_to_map; | |
5967 | Elf_Internal_Phdr *segment; | |
5968 | unsigned int i; | |
5969 | unsigned int num_segments; | |
5970 | bfd_boolean phdr_included = FALSE; | |
88967714 | 5971 | bfd_boolean p_paddr_valid; |
84d1d650 L |
5972 | |
5973 | iehdr = elf_elfheader (ibfd); | |
5974 | ||
5975 | map_first = NULL; | |
5976 | pointer_to_map = &map_first; | |
5977 | ||
88967714 AM |
5978 | /* If all the segment p_paddr fields are zero, don't set |
5979 | map->p_paddr_valid. */ | |
5980 | p_paddr_valid = FALSE; | |
84d1d650 | 5981 | num_segments = elf_elfheader (ibfd)->e_phnum; |
88967714 AM |
5982 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5983 | i < num_segments; | |
5984 | i++, segment++) | |
5985 | if (segment->p_paddr != 0) | |
5986 | { | |
5987 | p_paddr_valid = TRUE; | |
5988 | break; | |
5989 | } | |
5990 | ||
84d1d650 L |
5991 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5992 | i < num_segments; | |
5993 | i++, segment++) | |
5994 | { | |
5995 | asection *section; | |
5996 | unsigned int section_count; | |
5997 | bfd_size_type amt; | |
5998 | Elf_Internal_Shdr *this_hdr; | |
53020534 | 5999 | asection *first_section = NULL; |
a76e6f2f | 6000 | asection *lowest_section; |
84d1d650 | 6001 | |
84d1d650 L |
6002 | /* Compute how many sections are in this segment. */ |
6003 | for (section = ibfd->sections, section_count = 0; | |
6004 | section != NULL; | |
6005 | section = section->next) | |
6006 | { | |
6007 | this_hdr = &(elf_section_data(section)->this_hdr); | |
f4638467 | 6008 | if (ELF_SECTION_IN_SEGMENT (this_hdr, segment)) |
3271a814 | 6009 | { |
a76e6f2f AM |
6010 | if (first_section == NULL) |
6011 | first_section = section; | |
3271a814 NS |
6012 | section_count++; |
6013 | } | |
84d1d650 L |
6014 | } |
6015 | ||
6016 | /* Allocate a segment map big enough to contain | |
6017 | all of the sections we have selected. */ | |
6018 | amt = sizeof (struct elf_segment_map); | |
6019 | if (section_count != 0) | |
6020 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
a50b1753 | 6021 | map = (struct elf_segment_map *) bfd_zalloc (obfd, amt); |
84d1d650 L |
6022 | if (map == NULL) |
6023 | return FALSE; | |
6024 | ||
6025 | /* Initialize the fields of the output segment map with the | |
6026 | input segment. */ | |
6027 | map->next = NULL; | |
6028 | map->p_type = segment->p_type; | |
6029 | map->p_flags = segment->p_flags; | |
6030 | map->p_flags_valid = 1; | |
6031 | map->p_paddr = segment->p_paddr; | |
88967714 | 6032 | map->p_paddr_valid = p_paddr_valid; |
3f570048 AM |
6033 | map->p_align = segment->p_align; |
6034 | map->p_align_valid = 1; | |
3271a814 | 6035 | map->p_vaddr_offset = 0; |
84d1d650 | 6036 | |
9433b9b1 | 6037 | if (map->p_type == PT_GNU_RELRO) |
b10a8ae0 L |
6038 | { |
6039 | /* The PT_GNU_RELRO segment may contain the first a few | |
6040 | bytes in the .got.plt section even if the whole .got.plt | |
6041 | section isn't in the PT_GNU_RELRO segment. We won't | |
6042 | change the size of the PT_GNU_RELRO segment. */ | |
9433b9b1 | 6043 | map->p_size = segment->p_memsz; |
b10a8ae0 L |
6044 | map->p_size_valid = 1; |
6045 | } | |
6046 | ||
84d1d650 L |
6047 | /* Determine if this segment contains the ELF file header |
6048 | and if it contains the program headers themselves. */ | |
6049 | map->includes_filehdr = (segment->p_offset == 0 | |
6050 | && segment->p_filesz >= iehdr->e_ehsize); | |
6051 | ||
6052 | map->includes_phdrs = 0; | |
6053 | if (! phdr_included || segment->p_type != PT_LOAD) | |
6054 | { | |
6055 | map->includes_phdrs = | |
6056 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
6057 | && (segment->p_offset + segment->p_filesz | |
6058 | >= ((bfd_vma) iehdr->e_phoff | |
6059 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
6060 | ||
6061 | if (segment->p_type == PT_LOAD && map->includes_phdrs) | |
6062 | phdr_included = TRUE; | |
6063 | } | |
6064 | ||
a76e6f2f | 6065 | lowest_section = first_section; |
84d1d650 L |
6066 | if (section_count != 0) |
6067 | { | |
6068 | unsigned int isec = 0; | |
6069 | ||
53020534 | 6070 | for (section = first_section; |
84d1d650 L |
6071 | section != NULL; |
6072 | section = section->next) | |
6073 | { | |
6074 | this_hdr = &(elf_section_data(section)->this_hdr); | |
f4638467 | 6075 | if (ELF_SECTION_IN_SEGMENT (this_hdr, segment)) |
53020534 L |
6076 | { |
6077 | map->sections[isec++] = section->output_section; | |
a76e6f2f AM |
6078 | if (section->lma < lowest_section->lma) |
6079 | lowest_section = section; | |
6080 | if ((section->flags & SEC_ALLOC) != 0) | |
6081 | { | |
6082 | bfd_vma seg_off; | |
6083 | ||
6084 | /* Section lmas are set up from PT_LOAD header | |
6085 | p_paddr in _bfd_elf_make_section_from_shdr. | |
6086 | If this header has a p_paddr that disagrees | |
6087 | with the section lma, flag the p_paddr as | |
6088 | invalid. */ | |
6089 | if ((section->flags & SEC_LOAD) != 0) | |
6090 | seg_off = this_hdr->sh_offset - segment->p_offset; | |
6091 | else | |
6092 | seg_off = this_hdr->sh_addr - segment->p_vaddr; | |
6093 | if (section->lma - segment->p_paddr != seg_off) | |
6094 | map->p_paddr_valid = FALSE; | |
6095 | } | |
53020534 L |
6096 | if (isec == section_count) |
6097 | break; | |
6098 | } | |
84d1d650 L |
6099 | } |
6100 | } | |
6101 | ||
a76e6f2f AM |
6102 | if (map->includes_filehdr && lowest_section != NULL) |
6103 | /* We need to keep the space used by the headers fixed. */ | |
6104 | map->header_size = lowest_section->vma - segment->p_vaddr; | |
6105 | ||
6106 | if (!map->includes_phdrs | |
6107 | && !map->includes_filehdr | |
6108 | && map->p_paddr_valid) | |
6109 | /* There is some other padding before the first section. */ | |
6110 | map->p_vaddr_offset = ((lowest_section ? lowest_section->lma : 0) | |
6111 | - segment->p_paddr); | |
6112 | ||
84d1d650 L |
6113 | map->count = section_count; |
6114 | *pointer_to_map = map; | |
6115 | pointer_to_map = &map->next; | |
6116 | } | |
6117 | ||
6118 | elf_tdata (obfd)->segment_map = map_first; | |
6119 | return TRUE; | |
6120 | } | |
6121 | ||
6122 | /* Copy private BFD data. This copies or rewrites ELF program header | |
6123 | information. */ | |
6124 | ||
6125 | static bfd_boolean | |
6126 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
6127 | { | |
84d1d650 L |
6128 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
6129 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
6130 | return TRUE; | |
6131 | ||
6132 | if (elf_tdata (ibfd)->phdr == NULL) | |
6133 | return TRUE; | |
6134 | ||
6135 | if (ibfd->xvec == obfd->xvec) | |
6136 | { | |
cb3ff1e5 NC |
6137 | /* Check to see if any sections in the input BFD |
6138 | covered by ELF program header have changed. */ | |
d55ce4e2 | 6139 | Elf_Internal_Phdr *segment; |
84d1d650 L |
6140 | asection *section, *osec; |
6141 | unsigned int i, num_segments; | |
6142 | Elf_Internal_Shdr *this_hdr; | |
147d51c2 L |
6143 | const struct elf_backend_data *bed; |
6144 | ||
6145 | bed = get_elf_backend_data (ibfd); | |
6146 | ||
6147 | /* Regenerate the segment map if p_paddr is set to 0. */ | |
6148 | if (bed->want_p_paddr_set_to_zero) | |
6149 | goto rewrite; | |
84d1d650 L |
6150 | |
6151 | /* Initialize the segment mark field. */ | |
6152 | for (section = obfd->sections; section != NULL; | |
6153 | section = section->next) | |
6154 | section->segment_mark = FALSE; | |
6155 | ||
6156 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
6157 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
6158 | i < num_segments; | |
6159 | i++, segment++) | |
6160 | { | |
5f6999aa NC |
6161 | /* PR binutils/3535. The Solaris linker always sets the p_paddr |
6162 | and p_memsz fields of special segments (DYNAMIC, INTERP) to 0 | |
6163 | which severly confuses things, so always regenerate the segment | |
6164 | map in this case. */ | |
6165 | if (segment->p_paddr == 0 | |
6166 | && segment->p_memsz == 0 | |
6167 | && (segment->p_type == PT_INTERP || segment->p_type == PT_DYNAMIC)) | |
cb3ff1e5 | 6168 | goto rewrite; |
5f6999aa | 6169 | |
84d1d650 L |
6170 | for (section = ibfd->sections; |
6171 | section != NULL; section = section->next) | |
6172 | { | |
6173 | /* We mark the output section so that we know it comes | |
6174 | from the input BFD. */ | |
6175 | osec = section->output_section; | |
6176 | if (osec) | |
6177 | osec->segment_mark = TRUE; | |
6178 | ||
6179 | /* Check if this section is covered by the segment. */ | |
6180 | this_hdr = &(elf_section_data(section)->this_hdr); | |
f4638467 | 6181 | if (ELF_SECTION_IN_SEGMENT (this_hdr, segment)) |
84d1d650 L |
6182 | { |
6183 | /* FIXME: Check if its output section is changed or | |
6184 | removed. What else do we need to check? */ | |
6185 | if (osec == NULL | |
6186 | || section->flags != osec->flags | |
6187 | || section->lma != osec->lma | |
6188 | || section->vma != osec->vma | |
6189 | || section->size != osec->size | |
6190 | || section->rawsize != osec->rawsize | |
6191 | || section->alignment_power != osec->alignment_power) | |
6192 | goto rewrite; | |
6193 | } | |
6194 | } | |
6195 | } | |
6196 | ||
cb3ff1e5 | 6197 | /* Check to see if any output section do not come from the |
84d1d650 L |
6198 | input BFD. */ |
6199 | for (section = obfd->sections; section != NULL; | |
6200 | section = section->next) | |
6201 | { | |
6202 | if (section->segment_mark == FALSE) | |
6203 | goto rewrite; | |
6204 | else | |
6205 | section->segment_mark = FALSE; | |
6206 | } | |
6207 | ||
6208 | return copy_elf_program_header (ibfd, obfd); | |
6209 | } | |
6210 | ||
6211 | rewrite: | |
6212 | return rewrite_elf_program_header (ibfd, obfd); | |
6213 | } | |
6214 | ||
ccd2ec6a L |
6215 | /* Initialize private output section information from input section. */ |
6216 | ||
6217 | bfd_boolean | |
6218 | _bfd_elf_init_private_section_data (bfd *ibfd, | |
6219 | asection *isec, | |
6220 | bfd *obfd, | |
6221 | asection *osec, | |
6222 | struct bfd_link_info *link_info) | |
6223 | ||
6224 | { | |
6225 | Elf_Internal_Shdr *ihdr, *ohdr; | |
dfa7b0b8 | 6226 | bfd_boolean final_link = link_info != NULL && !link_info->relocatable; |
ccd2ec6a L |
6227 | |
6228 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
6229 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
6230 | return TRUE; | |
6231 | ||
dfa7b0b8 AM |
6232 | /* For objcopy and relocatable link, don't copy the output ELF |
6233 | section type from input if the output BFD section flags have been | |
6234 | set to something different. For a final link allow some flags | |
6235 | that the linker clears to differ. */ | |
42bb2e33 | 6236 | if (elf_section_type (osec) == SHT_NULL |
dfa7b0b8 AM |
6237 | && (osec->flags == isec->flags |
6238 | || (final_link | |
6239 | && ((osec->flags ^ isec->flags) | |
0814be7d | 6240 | & ~(SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_RELOC)) == 0))) |
42bb2e33 | 6241 | elf_section_type (osec) = elf_section_type (isec); |
d270463e L |
6242 | |
6243 | /* FIXME: Is this correct for all OS/PROC specific flags? */ | |
6244 | elf_section_flags (osec) |= (elf_section_flags (isec) | |
6245 | & (SHF_MASKOS | SHF_MASKPROC)); | |
ccd2ec6a L |
6246 | |
6247 | /* Set things up for objcopy and relocatable link. The output | |
6248 | SHT_GROUP section will have its elf_next_in_group pointing back | |
6249 | to the input group members. Ignore linker created group section. | |
6250 | See elfNN_ia64_object_p in elfxx-ia64.c. */ | |
dfa7b0b8 | 6251 | if (!final_link) |
ccd2ec6a L |
6252 | { |
6253 | if (elf_sec_group (isec) == NULL | |
6254 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
6255 | { | |
6256 | if (elf_section_flags (isec) & SHF_GROUP) | |
6257 | elf_section_flags (osec) |= SHF_GROUP; | |
6258 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
9659de1c | 6259 | elf_section_data (osec)->group = elf_section_data (isec)->group; |
ccd2ec6a L |
6260 | } |
6261 | } | |
6262 | ||
6263 | ihdr = &elf_section_data (isec)->this_hdr; | |
6264 | ||
6265 | /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We | |
6266 | don't use the output section of the linked-to section since it | |
6267 | may be NULL at this point. */ | |
6268 | if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0) | |
6269 | { | |
6270 | ohdr = &elf_section_data (osec)->this_hdr; | |
6271 | ohdr->sh_flags |= SHF_LINK_ORDER; | |
6272 | elf_linked_to_section (osec) = elf_linked_to_section (isec); | |
6273 | } | |
6274 | ||
6275 | osec->use_rela_p = isec->use_rela_p; | |
6276 | ||
6277 | return TRUE; | |
6278 | } | |
6279 | ||
252b5132 RH |
6280 | /* Copy private section information. This copies over the entsize |
6281 | field, and sometimes the info field. */ | |
6282 | ||
b34976b6 | 6283 | bfd_boolean |
217aa764 AM |
6284 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
6285 | asection *isec, | |
6286 | bfd *obfd, | |
6287 | asection *osec) | |
252b5132 RH |
6288 | { |
6289 | Elf_Internal_Shdr *ihdr, *ohdr; | |
6290 | ||
6291 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
6292 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 6293 | return TRUE; |
252b5132 | 6294 | |
252b5132 RH |
6295 | ihdr = &elf_section_data (isec)->this_hdr; |
6296 | ohdr = &elf_section_data (osec)->this_hdr; | |
6297 | ||
6298 | ohdr->sh_entsize = ihdr->sh_entsize; | |
6299 | ||
6300 | if (ihdr->sh_type == SHT_SYMTAB | |
6301 | || ihdr->sh_type == SHT_DYNSYM | |
6302 | || ihdr->sh_type == SHT_GNU_verneed | |
6303 | || ihdr->sh_type == SHT_GNU_verdef) | |
6304 | ohdr->sh_info = ihdr->sh_info; | |
6305 | ||
ccd2ec6a L |
6306 | return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec, |
6307 | NULL); | |
252b5132 RH |
6308 | } |
6309 | ||
d0bf826b AM |
6310 | /* Look at all the SHT_GROUP sections in IBFD, making any adjustments |
6311 | necessary if we are removing either the SHT_GROUP section or any of | |
6312 | the group member sections. DISCARDED is the value that a section's | |
6313 | output_section has if the section will be discarded, NULL when this | |
6314 | function is called from objcopy, bfd_abs_section_ptr when called | |
6315 | from the linker. */ | |
80fccad2 BW |
6316 | |
6317 | bfd_boolean | |
d0bf826b | 6318 | _bfd_elf_fixup_group_sections (bfd *ibfd, asection *discarded) |
80fccad2 | 6319 | { |
30288845 AM |
6320 | asection *isec; |
6321 | ||
30288845 | 6322 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) |
415f38a6 | 6323 | if (elf_section_type (isec) == SHT_GROUP) |
30288845 AM |
6324 | { |
6325 | asection *first = elf_next_in_group (isec); | |
6326 | asection *s = first; | |
d0bf826b AM |
6327 | bfd_size_type removed = 0; |
6328 | ||
30288845 AM |
6329 | while (s != NULL) |
6330 | { | |
415f38a6 AM |
6331 | /* If this member section is being output but the |
6332 | SHT_GROUP section is not, then clear the group info | |
6333 | set up by _bfd_elf_copy_private_section_data. */ | |
d0bf826b AM |
6334 | if (s->output_section != discarded |
6335 | && isec->output_section == discarded) | |
30288845 AM |
6336 | { |
6337 | elf_section_flags (s->output_section) &= ~SHF_GROUP; | |
6338 | elf_group_name (s->output_section) = NULL; | |
6339 | } | |
415f38a6 AM |
6340 | /* Conversely, if the member section is not being output |
6341 | but the SHT_GROUP section is, then adjust its size. */ | |
d0bf826b AM |
6342 | else if (s->output_section == discarded |
6343 | && isec->output_section != discarded) | |
6344 | removed += 4; | |
30288845 AM |
6345 | s = elf_next_in_group (s); |
6346 | if (s == first) | |
6347 | break; | |
6348 | } | |
d0bf826b AM |
6349 | if (removed != 0) |
6350 | { | |
6351 | if (discarded != NULL) | |
6352 | { | |
6353 | /* If we've been called for ld -r, then we need to | |
6354 | adjust the input section size. This function may | |
6355 | be called multiple times, so save the original | |
6356 | size. */ | |
6357 | if (isec->rawsize == 0) | |
6358 | isec->rawsize = isec->size; | |
6359 | isec->size = isec->rawsize - removed; | |
6360 | } | |
6361 | else | |
6362 | { | |
6363 | /* Adjust the output section size when called from | |
6364 | objcopy. */ | |
6365 | isec->output_section->size -= removed; | |
6366 | } | |
6367 | } | |
30288845 AM |
6368 | } |
6369 | ||
80fccad2 BW |
6370 | return TRUE; |
6371 | } | |
6372 | ||
d0bf826b AM |
6373 | /* Copy private header information. */ |
6374 | ||
6375 | bfd_boolean | |
6376 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
6377 | { | |
6378 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
6379 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
6380 | return TRUE; | |
6381 | ||
6382 | /* Copy over private BFD data if it has not already been copied. | |
6383 | This must be done here, rather than in the copy_private_bfd_data | |
6384 | entry point, because the latter is called after the section | |
6385 | contents have been set, which means that the program headers have | |
6386 | already been worked out. */ | |
6387 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
6388 | { | |
6389 | if (! copy_private_bfd_data (ibfd, obfd)) | |
6390 | return FALSE; | |
6391 | } | |
6392 | ||
6393 | return _bfd_elf_fixup_group_sections (ibfd, NULL); | |
6394 | } | |
6395 | ||
252b5132 RH |
6396 | /* Copy private symbol information. If this symbol is in a section |
6397 | which we did not map into a BFD section, try to map the section | |
6398 | index correctly. We use special macro definitions for the mapped | |
6399 | section indices; these definitions are interpreted by the | |
6400 | swap_out_syms function. */ | |
6401 | ||
9ad5cbcf AM |
6402 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
6403 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
6404 | #define MAP_STRTAB (SHN_HIOS + 3) | |
6405 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
6406 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 6407 | |
b34976b6 | 6408 | bfd_boolean |
217aa764 AM |
6409 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
6410 | asymbol *isymarg, | |
6411 | bfd *obfd, | |
6412 | asymbol *osymarg) | |
252b5132 RH |
6413 | { |
6414 | elf_symbol_type *isym, *osym; | |
6415 | ||
6416 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
6417 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 6418 | return TRUE; |
252b5132 RH |
6419 | |
6420 | isym = elf_symbol_from (ibfd, isymarg); | |
6421 | osym = elf_symbol_from (obfd, osymarg); | |
6422 | ||
6423 | if (isym != NULL | |
8424d8f5 | 6424 | && isym->internal_elf_sym.st_shndx != 0 |
252b5132 RH |
6425 | && osym != NULL |
6426 | && bfd_is_abs_section (isym->symbol.section)) | |
6427 | { | |
6428 | unsigned int shndx; | |
6429 | ||
6430 | shndx = isym->internal_elf_sym.st_shndx; | |
6431 | if (shndx == elf_onesymtab (ibfd)) | |
6432 | shndx = MAP_ONESYMTAB; | |
6433 | else if (shndx == elf_dynsymtab (ibfd)) | |
6434 | shndx = MAP_DYNSYMTAB; | |
6435 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
6436 | shndx = MAP_STRTAB; | |
6437 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
6438 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
6439 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
6440 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
6441 | osym->internal_elf_sym.st_shndx = shndx; |
6442 | } | |
6443 | ||
b34976b6 | 6444 | return TRUE; |
252b5132 RH |
6445 | } |
6446 | ||
6447 | /* Swap out the symbols. */ | |
6448 | ||
b34976b6 | 6449 | static bfd_boolean |
217aa764 AM |
6450 | swap_out_syms (bfd *abfd, |
6451 | struct bfd_strtab_hash **sttp, | |
6452 | int relocatable_p) | |
252b5132 | 6453 | { |
9c5bfbb7 | 6454 | const struct elf_backend_data *bed; |
079e9a2f AM |
6455 | int symcount; |
6456 | asymbol **syms; | |
6457 | struct bfd_strtab_hash *stt; | |
6458 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 6459 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 6460 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
6461 | bfd_byte *outbound_syms; |
6462 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
6463 | int idx; |
6464 | bfd_size_type amt; | |
174fd7f9 | 6465 | bfd_boolean name_local_sections; |
252b5132 RH |
6466 | |
6467 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 6468 | return FALSE; |
252b5132 | 6469 | |
c044fabd | 6470 | /* Dump out the symtabs. */ |
079e9a2f AM |
6471 | stt = _bfd_elf_stringtab_init (); |
6472 | if (stt == NULL) | |
b34976b6 | 6473 | return FALSE; |
252b5132 | 6474 | |
079e9a2f AM |
6475 | bed = get_elf_backend_data (abfd); |
6476 | symcount = bfd_get_symcount (abfd); | |
6477 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6478 | symtab_hdr->sh_type = SHT_SYMTAB; | |
6479 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
6480 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
6481 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
72de5009 | 6482 | symtab_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align; |
079e9a2f AM |
6483 | |
6484 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
6485 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
6486 | ||
a50b1753 NC |
6487 | outbound_syms = (bfd_byte *) bfd_alloc2 (abfd, 1 + symcount, |
6488 | bed->s->sizeof_sym); | |
079e9a2f | 6489 | if (outbound_syms == NULL) |
5ed6aba4 NC |
6490 | { |
6491 | _bfd_stringtab_free (stt); | |
6492 | return FALSE; | |
6493 | } | |
217aa764 | 6494 | symtab_hdr->contents = outbound_syms; |
252b5132 | 6495 | |
9ad5cbcf AM |
6496 | outbound_shndx = NULL; |
6497 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
6498 | if (symtab_shndx_hdr->sh_name != 0) | |
6499 | { | |
6500 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
a50b1753 NC |
6501 | outbound_shndx = (bfd_byte *) |
6502 | bfd_zalloc2 (abfd, 1 + symcount, sizeof (Elf_External_Sym_Shndx)); | |
9ad5cbcf | 6503 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
6504 | { |
6505 | _bfd_stringtab_free (stt); | |
6506 | return FALSE; | |
6507 | } | |
6508 | ||
9ad5cbcf AM |
6509 | symtab_shndx_hdr->contents = outbound_shndx; |
6510 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
6511 | symtab_shndx_hdr->sh_size = amt; | |
6512 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
6513 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
6514 | } | |
6515 | ||
589e6347 | 6516 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
6517 | { |
6518 | /* Fill in zeroth symbol and swap it out. */ | |
6519 | Elf_Internal_Sym sym; | |
6520 | sym.st_name = 0; | |
6521 | sym.st_value = 0; | |
6522 | sym.st_size = 0; | |
6523 | sym.st_info = 0; | |
6524 | sym.st_other = 0; | |
6525 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 6526 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6527 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6528 | if (outbound_shndx != NULL) |
6529 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6530 | } |
252b5132 | 6531 | |
174fd7f9 RS |
6532 | name_local_sections |
6533 | = (bed->elf_backend_name_local_section_symbols | |
6534 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
6535 | ||
079e9a2f AM |
6536 | syms = bfd_get_outsymbols (abfd); |
6537 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 6538 | { |
252b5132 | 6539 | Elf_Internal_Sym sym; |
079e9a2f AM |
6540 | bfd_vma value = syms[idx]->value; |
6541 | elf_symbol_type *type_ptr; | |
6542 | flagword flags = syms[idx]->flags; | |
6543 | int type; | |
252b5132 | 6544 | |
174fd7f9 RS |
6545 | if (!name_local_sections |
6546 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
6547 | { |
6548 | /* Local section symbols have no name. */ | |
6549 | sym.st_name = 0; | |
6550 | } | |
6551 | else | |
6552 | { | |
6553 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
6554 | syms[idx]->name, | |
b34976b6 | 6555 | TRUE, FALSE); |
079e9a2f | 6556 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
6557 | { |
6558 | _bfd_stringtab_free (stt); | |
6559 | return FALSE; | |
6560 | } | |
079e9a2f | 6561 | } |
252b5132 | 6562 | |
079e9a2f | 6563 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 6564 | |
079e9a2f AM |
6565 | if ((flags & BSF_SECTION_SYM) == 0 |
6566 | && bfd_is_com_section (syms[idx]->section)) | |
6567 | { | |
6568 | /* ELF common symbols put the alignment into the `value' field, | |
6569 | and the size into the `size' field. This is backwards from | |
6570 | how BFD handles it, so reverse it here. */ | |
6571 | sym.st_size = value; | |
6572 | if (type_ptr == NULL | |
6573 | || type_ptr->internal_elf_sym.st_value == 0) | |
6574 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
6575 | else | |
6576 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
6577 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
6578 | (abfd, syms[idx]->section); | |
6579 | } | |
6580 | else | |
6581 | { | |
6582 | asection *sec = syms[idx]->section; | |
cb33740c | 6583 | unsigned int shndx; |
252b5132 | 6584 | |
079e9a2f AM |
6585 | if (sec->output_section) |
6586 | { | |
6587 | value += sec->output_offset; | |
6588 | sec = sec->output_section; | |
6589 | } | |
589e6347 | 6590 | |
079e9a2f AM |
6591 | /* Don't add in the section vma for relocatable output. */ |
6592 | if (! relocatable_p) | |
6593 | value += sec->vma; | |
6594 | sym.st_value = value; | |
6595 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
6596 | ||
6597 | if (bfd_is_abs_section (sec) | |
6598 | && type_ptr != NULL | |
6599 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
6600 | { | |
6601 | /* This symbol is in a real ELF section which we did | |
6602 | not create as a BFD section. Undo the mapping done | |
6603 | by copy_private_symbol_data. */ | |
6604 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
6605 | switch (shndx) | |
6606 | { | |
6607 | case MAP_ONESYMTAB: | |
6608 | shndx = elf_onesymtab (abfd); | |
6609 | break; | |
6610 | case MAP_DYNSYMTAB: | |
6611 | shndx = elf_dynsymtab (abfd); | |
6612 | break; | |
6613 | case MAP_STRTAB: | |
6614 | shndx = elf_tdata (abfd)->strtab_section; | |
6615 | break; | |
6616 | case MAP_SHSTRTAB: | |
6617 | shndx = elf_tdata (abfd)->shstrtab_section; | |
6618 | break; | |
9ad5cbcf AM |
6619 | case MAP_SYM_SHNDX: |
6620 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
6621 | break; | |
079e9a2f AM |
6622 | default: |
6623 | break; | |
6624 | } | |
6625 | } | |
6626 | else | |
6627 | { | |
6628 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 6629 | |
cb33740c | 6630 | if (shndx == SHN_BAD) |
079e9a2f AM |
6631 | { |
6632 | asection *sec2; | |
6633 | ||
6634 | /* Writing this would be a hell of a lot easier if | |
6635 | we had some decent documentation on bfd, and | |
6636 | knew what to expect of the library, and what to | |
6637 | demand of applications. For example, it | |
6638 | appears that `objcopy' might not set the | |
6639 | section of a symbol to be a section that is | |
6640 | actually in the output file. */ | |
6641 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
6642 | if (sec2 == NULL) |
6643 | { | |
6644 | _bfd_error_handler (_("\ | |
6645 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
6646 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
6647 | sec->name); | |
811072d8 | 6648 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 6649 | _bfd_stringtab_free (stt); |
589e6347 NC |
6650 | return FALSE; |
6651 | } | |
811072d8 | 6652 | |
079e9a2f | 6653 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
cb33740c | 6654 | BFD_ASSERT (shndx != SHN_BAD); |
079e9a2f AM |
6655 | } |
6656 | } | |
252b5132 | 6657 | |
079e9a2f AM |
6658 | sym.st_shndx = shndx; |
6659 | } | |
252b5132 | 6660 | |
13ae64f3 JJ |
6661 | if ((flags & BSF_THREAD_LOCAL) != 0) |
6662 | type = STT_TLS; | |
d8045f23 NC |
6663 | else if ((flags & BSF_GNU_INDIRECT_FUNCTION) != 0) |
6664 | type = STT_GNU_IFUNC; | |
13ae64f3 | 6665 | else if ((flags & BSF_FUNCTION) != 0) |
079e9a2f AM |
6666 | type = STT_FUNC; |
6667 | else if ((flags & BSF_OBJECT) != 0) | |
6668 | type = STT_OBJECT; | |
d9352518 DB |
6669 | else if ((flags & BSF_RELC) != 0) |
6670 | type = STT_RELC; | |
6671 | else if ((flags & BSF_SRELC) != 0) | |
6672 | type = STT_SRELC; | |
079e9a2f AM |
6673 | else |
6674 | type = STT_NOTYPE; | |
252b5132 | 6675 | |
13ae64f3 JJ |
6676 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
6677 | type = STT_TLS; | |
6678 | ||
589e6347 | 6679 | /* Processor-specific types. */ |
079e9a2f AM |
6680 | if (type_ptr != NULL |
6681 | && bed->elf_backend_get_symbol_type) | |
6682 | type = ((*bed->elf_backend_get_symbol_type) | |
6683 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 6684 | |
079e9a2f AM |
6685 | if (flags & BSF_SECTION_SYM) |
6686 | { | |
6687 | if (flags & BSF_GLOBAL) | |
6688 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6689 | else | |
6690 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
6691 | } | |
6692 | else if (bfd_is_com_section (syms[idx]->section)) | |
0a40daed | 6693 | { |
504b7d20 | 6694 | #ifdef USE_STT_COMMON |
0a40daed MK |
6695 | if (type == STT_OBJECT) |
6696 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_COMMON); | |
6697 | else | |
504b7d20 | 6698 | #endif |
c91e322a | 6699 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); |
0a40daed | 6700 | } |
079e9a2f AM |
6701 | else if (bfd_is_und_section (syms[idx]->section)) |
6702 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
6703 | ? STB_WEAK | |
6704 | : STB_GLOBAL), | |
6705 | type); | |
6706 | else if (flags & BSF_FILE) | |
6707 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
6708 | else | |
6709 | { | |
6710 | int bind = STB_LOCAL; | |
252b5132 | 6711 | |
079e9a2f AM |
6712 | if (flags & BSF_LOCAL) |
6713 | bind = STB_LOCAL; | |
3e7a7d11 NC |
6714 | else if (flags & BSF_GNU_UNIQUE) |
6715 | bind = STB_GNU_UNIQUE; | |
079e9a2f AM |
6716 | else if (flags & BSF_WEAK) |
6717 | bind = STB_WEAK; | |
6718 | else if (flags & BSF_GLOBAL) | |
6719 | bind = STB_GLOBAL; | |
252b5132 | 6720 | |
079e9a2f AM |
6721 | sym.st_info = ELF_ST_INFO (bind, type); |
6722 | } | |
252b5132 | 6723 | |
079e9a2f AM |
6724 | if (type_ptr != NULL) |
6725 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6726 | else | |
6727 | sym.st_other = 0; | |
252b5132 | 6728 | |
9ad5cbcf | 6729 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6730 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6731 | if (outbound_shndx != NULL) |
6732 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6733 | } |
252b5132 | 6734 | |
079e9a2f AM |
6735 | *sttp = stt; |
6736 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6737 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6738 | |
079e9a2f AM |
6739 | symstrtab_hdr->sh_flags = 0; |
6740 | symstrtab_hdr->sh_addr = 0; | |
6741 | symstrtab_hdr->sh_entsize = 0; | |
6742 | symstrtab_hdr->sh_link = 0; | |
6743 | symstrtab_hdr->sh_info = 0; | |
6744 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6745 | |
b34976b6 | 6746 | return TRUE; |
252b5132 RH |
6747 | } |
6748 | ||
6749 | /* Return the number of bytes required to hold the symtab vector. | |
6750 | ||
6751 | Note that we base it on the count plus 1, since we will null terminate | |
6752 | the vector allocated based on this size. However, the ELF symbol table | |
6753 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6754 | ||
6755 | long | |
217aa764 | 6756 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6757 | { |
6758 | long symcount; | |
6759 | long symtab_size; | |
6760 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6761 | ||
6762 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6763 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6764 | if (symcount > 0) | |
6765 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6766 | |
6767 | return symtab_size; | |
6768 | } | |
6769 | ||
6770 | long | |
217aa764 | 6771 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6772 | { |
6773 | long symcount; | |
6774 | long symtab_size; | |
6775 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6776 | ||
6777 | if (elf_dynsymtab (abfd) == 0) | |
6778 | { | |
6779 | bfd_set_error (bfd_error_invalid_operation); | |
6780 | return -1; | |
6781 | } | |
6782 | ||
6783 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6784 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6785 | if (symcount > 0) | |
6786 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6787 | |
6788 | return symtab_size; | |
6789 | } | |
6790 | ||
6791 | long | |
217aa764 AM |
6792 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6793 | sec_ptr asect) | |
252b5132 RH |
6794 | { |
6795 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6796 | } | |
6797 | ||
6798 | /* Canonicalize the relocs. */ | |
6799 | ||
6800 | long | |
217aa764 AM |
6801 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6802 | sec_ptr section, | |
6803 | arelent **relptr, | |
6804 | asymbol **symbols) | |
252b5132 RH |
6805 | { |
6806 | arelent *tblptr; | |
6807 | unsigned int i; | |
9c5bfbb7 | 6808 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6809 | |
b34976b6 | 6810 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6811 | return -1; |
6812 | ||
6813 | tblptr = section->relocation; | |
6814 | for (i = 0; i < section->reloc_count; i++) | |
6815 | *relptr++ = tblptr++; | |
6816 | ||
6817 | *relptr = NULL; | |
6818 | ||
6819 | return section->reloc_count; | |
6820 | } | |
6821 | ||
6822 | long | |
6cee3f79 | 6823 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6824 | { |
9c5bfbb7 | 6825 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6826 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6827 | |
6828 | if (symcount >= 0) | |
6829 | bfd_get_symcount (abfd) = symcount; | |
6830 | return symcount; | |
6831 | } | |
6832 | ||
6833 | long | |
217aa764 AM |
6834 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6835 | asymbol **allocation) | |
252b5132 | 6836 | { |
9c5bfbb7 | 6837 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6838 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6839 | |
6840 | if (symcount >= 0) | |
6841 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6842 | return symcount; | |
252b5132 RH |
6843 | } |
6844 | ||
8615f3f2 AM |
6845 | /* Return the size required for the dynamic reloc entries. Any loadable |
6846 | section that was actually installed in the BFD, and has type SHT_REL | |
6847 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6848 | dynamic reloc section. */ | |
252b5132 RH |
6849 | |
6850 | long | |
217aa764 | 6851 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6852 | { |
6853 | long ret; | |
6854 | asection *s; | |
6855 | ||
6856 | if (elf_dynsymtab (abfd) == 0) | |
6857 | { | |
6858 | bfd_set_error (bfd_error_invalid_operation); | |
6859 | return -1; | |
6860 | } | |
6861 | ||
6862 | ret = sizeof (arelent *); | |
6863 | for (s = abfd->sections; s != NULL; s = s->next) | |
266b05cf | 6864 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
252b5132 RH |
6865 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6866 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6867 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6868 | * sizeof (arelent *)); |
6869 | ||
6870 | return ret; | |
6871 | } | |
6872 | ||
8615f3f2 AM |
6873 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6874 | dynamic relocations as a single block, although they are actually | |
6875 | associated with particular sections; the interface, which was | |
6876 | designed for SunOS style shared libraries, expects that there is only | |
6877 | one set of dynamic relocs. Any loadable section that was actually | |
6878 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6879 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6880 | |
6881 | long | |
217aa764 AM |
6882 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6883 | arelent **storage, | |
6884 | asymbol **syms) | |
252b5132 | 6885 | { |
217aa764 | 6886 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6887 | asection *s; |
6888 | long ret; | |
6889 | ||
6890 | if (elf_dynsymtab (abfd) == 0) | |
6891 | { | |
6892 | bfd_set_error (bfd_error_invalid_operation); | |
6893 | return -1; | |
6894 | } | |
6895 | ||
6896 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6897 | ret = 0; | |
6898 | for (s = abfd->sections; s != NULL; s = s->next) | |
6899 | { | |
266b05cf | 6900 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
252b5132 RH |
6901 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6902 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6903 | { | |
6904 | arelent *p; | |
6905 | long count, i; | |
6906 | ||
b34976b6 | 6907 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6908 | return -1; |
eea6121a | 6909 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6910 | p = s->relocation; |
6911 | for (i = 0; i < count; i++) | |
6912 | *storage++ = p++; | |
6913 | ret += count; | |
6914 | } | |
6915 | } | |
6916 | ||
6917 | *storage = NULL; | |
6918 | ||
6919 | return ret; | |
6920 | } | |
6921 | \f | |
6922 | /* Read in the version information. */ | |
6923 | ||
b34976b6 | 6924 | bfd_boolean |
fc0e6df6 | 6925 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6926 | { |
6927 | bfd_byte *contents = NULL; | |
fc0e6df6 PB |
6928 | unsigned int freeidx = 0; |
6929 | ||
6930 | if (elf_dynverref (abfd) != 0) | |
6931 | { | |
6932 | Elf_Internal_Shdr *hdr; | |
6933 | Elf_External_Verneed *everneed; | |
6934 | Elf_Internal_Verneed *iverneed; | |
6935 | unsigned int i; | |
d0fb9a8d | 6936 | bfd_byte *contents_end; |
fc0e6df6 PB |
6937 | |
6938 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6939 | ||
a50b1753 NC |
6940 | elf_tdata (abfd)->verref = (Elf_Internal_Verneed *) |
6941 | bfd_zalloc2 (abfd, hdr->sh_info, sizeof (Elf_Internal_Verneed)); | |
fc0e6df6 PB |
6942 | if (elf_tdata (abfd)->verref == NULL) |
6943 | goto error_return; | |
6944 | ||
6945 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6946 | ||
a50b1753 | 6947 | contents = (bfd_byte *) bfd_malloc (hdr->sh_size); |
fc0e6df6 | 6948 | if (contents == NULL) |
d0fb9a8d JJ |
6949 | { |
6950 | error_return_verref: | |
6951 | elf_tdata (abfd)->verref = NULL; | |
6952 | elf_tdata (abfd)->cverrefs = 0; | |
6953 | goto error_return; | |
6954 | } | |
fc0e6df6 PB |
6955 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
6956 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
d0fb9a8d | 6957 | goto error_return_verref; |
fc0e6df6 | 6958 | |
d0fb9a8d JJ |
6959 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed)) |
6960 | goto error_return_verref; | |
6961 | ||
6962 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
6963 | == sizeof (Elf_External_Vernaux)); | |
6964 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
6965 | everneed = (Elf_External_Verneed *) contents; |
6966 | iverneed = elf_tdata (abfd)->verref; | |
6967 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6968 | { | |
6969 | Elf_External_Vernaux *evernaux; | |
6970 | Elf_Internal_Vernaux *ivernaux; | |
6971 | unsigned int j; | |
6972 | ||
6973 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6974 | ||
6975 | iverneed->vn_bfd = abfd; | |
6976 | ||
6977 | iverneed->vn_filename = | |
6978 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6979 | iverneed->vn_file); | |
6980 | if (iverneed->vn_filename == NULL) | |
d0fb9a8d | 6981 | goto error_return_verref; |
fc0e6df6 | 6982 | |
d0fb9a8d JJ |
6983 | if (iverneed->vn_cnt == 0) |
6984 | iverneed->vn_auxptr = NULL; | |
6985 | else | |
6986 | { | |
a50b1753 NC |
6987 | iverneed->vn_auxptr = (struct elf_internal_vernaux *) |
6988 | bfd_alloc2 (abfd, iverneed->vn_cnt, | |
6989 | sizeof (Elf_Internal_Vernaux)); | |
d0fb9a8d JJ |
6990 | if (iverneed->vn_auxptr == NULL) |
6991 | goto error_return_verref; | |
6992 | } | |
6993 | ||
6994 | if (iverneed->vn_aux | |
6995 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6996 | goto error_return_verref; | |
fc0e6df6 PB |
6997 | |
6998 | evernaux = ((Elf_External_Vernaux *) | |
6999 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
7000 | ivernaux = iverneed->vn_auxptr; | |
7001 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
7002 | { | |
7003 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
7004 | ||
7005 | ivernaux->vna_nodename = | |
7006 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
7007 | ivernaux->vna_name); | |
7008 | if (ivernaux->vna_nodename == NULL) | |
d0fb9a8d | 7009 | goto error_return_verref; |
fc0e6df6 PB |
7010 | |
7011 | if (j + 1 < iverneed->vn_cnt) | |
7012 | ivernaux->vna_nextptr = ivernaux + 1; | |
7013 | else | |
7014 | ivernaux->vna_nextptr = NULL; | |
7015 | ||
d0fb9a8d JJ |
7016 | if (ivernaux->vna_next |
7017 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
7018 | goto error_return_verref; | |
7019 | ||
fc0e6df6 PB |
7020 | evernaux = ((Elf_External_Vernaux *) |
7021 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
7022 | ||
7023 | if (ivernaux->vna_other > freeidx) | |
7024 | freeidx = ivernaux->vna_other; | |
7025 | } | |
7026 | ||
7027 | if (i + 1 < hdr->sh_info) | |
7028 | iverneed->vn_nextref = iverneed + 1; | |
7029 | else | |
7030 | iverneed->vn_nextref = NULL; | |
7031 | ||
d0fb9a8d JJ |
7032 | if (iverneed->vn_next |
7033 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
7034 | goto error_return_verref; | |
7035 | ||
fc0e6df6 PB |
7036 | everneed = ((Elf_External_Verneed *) |
7037 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
7038 | } | |
7039 | ||
7040 | free (contents); | |
7041 | contents = NULL; | |
7042 | } | |
252b5132 RH |
7043 | |
7044 | if (elf_dynverdef (abfd) != 0) | |
7045 | { | |
7046 | Elf_Internal_Shdr *hdr; | |
7047 | Elf_External_Verdef *everdef; | |
7048 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
7049 | Elf_Internal_Verdef *iverdefarr; |
7050 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 7051 | unsigned int i; |
062e2358 | 7052 | unsigned int maxidx; |
d0fb9a8d | 7053 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
7054 | |
7055 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
7056 | ||
a50b1753 | 7057 | contents = (bfd_byte *) bfd_malloc (hdr->sh_size); |
252b5132 RH |
7058 | if (contents == NULL) |
7059 | goto error_return; | |
7060 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 7061 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
7062 | goto error_return; |
7063 | ||
d0fb9a8d JJ |
7064 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef)) |
7065 | goto error_return; | |
7066 | ||
7067 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
7068 | >= sizeof (Elf_External_Verdaux)); | |
7069 | contents_end_def = contents + hdr->sh_size | |
7070 | - sizeof (Elf_External_Verdef); | |
7071 | contents_end_aux = contents + hdr->sh_size | |
7072 | - sizeof (Elf_External_Verdaux); | |
7073 | ||
f631889e UD |
7074 | /* We know the number of entries in the section but not the maximum |
7075 | index. Therefore we have to run through all entries and find | |
7076 | the maximum. */ | |
252b5132 | 7077 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
7078 | maxidx = 0; |
7079 | for (i = 0; i < hdr->sh_info; ++i) | |
7080 | { | |
7081 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
7082 | ||
062e2358 AM |
7083 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
7084 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 7085 | |
d0fb9a8d JJ |
7086 | if (iverdefmem.vd_next |
7087 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
7088 | goto error_return; | |
7089 | ||
f631889e UD |
7090 | everdef = ((Elf_External_Verdef *) |
7091 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
7092 | } | |
7093 | ||
fc0e6df6 PB |
7094 | if (default_imported_symver) |
7095 | { | |
7096 | if (freeidx > maxidx) | |
7097 | maxidx = ++freeidx; | |
7098 | else | |
7099 | freeidx = ++maxidx; | |
7100 | } | |
a50b1753 NC |
7101 | elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) |
7102 | bfd_zalloc2 (abfd, maxidx, sizeof (Elf_Internal_Verdef)); | |
f631889e UD |
7103 | if (elf_tdata (abfd)->verdef == NULL) |
7104 | goto error_return; | |
7105 | ||
7106 | elf_tdata (abfd)->cverdefs = maxidx; | |
7107 | ||
7108 | everdef = (Elf_External_Verdef *) contents; | |
7109 | iverdefarr = elf_tdata (abfd)->verdef; | |
7110 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
7111 | { |
7112 | Elf_External_Verdaux *everdaux; | |
7113 | Elf_Internal_Verdaux *iverdaux; | |
7114 | unsigned int j; | |
7115 | ||
f631889e UD |
7116 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
7117 | ||
d0fb9a8d JJ |
7118 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
7119 | { | |
7120 | error_return_verdef: | |
7121 | elf_tdata (abfd)->verdef = NULL; | |
7122 | elf_tdata (abfd)->cverdefs = 0; | |
7123 | goto error_return; | |
7124 | } | |
7125 | ||
f631889e UD |
7126 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
7127 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
7128 | |
7129 | iverdef->vd_bfd = abfd; | |
7130 | ||
d0fb9a8d JJ |
7131 | if (iverdef->vd_cnt == 0) |
7132 | iverdef->vd_auxptr = NULL; | |
7133 | else | |
7134 | { | |
a50b1753 NC |
7135 | iverdef->vd_auxptr = (struct elf_internal_verdaux *) |
7136 | bfd_alloc2 (abfd, iverdef->vd_cnt, | |
7137 | sizeof (Elf_Internal_Verdaux)); | |
d0fb9a8d JJ |
7138 | if (iverdef->vd_auxptr == NULL) |
7139 | goto error_return_verdef; | |
7140 | } | |
7141 | ||
7142 | if (iverdef->vd_aux | |
7143 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
7144 | goto error_return_verdef; | |
252b5132 RH |
7145 | |
7146 | everdaux = ((Elf_External_Verdaux *) | |
7147 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
7148 | iverdaux = iverdef->vd_auxptr; | |
7149 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
7150 | { | |
7151 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
7152 | ||
7153 | iverdaux->vda_nodename = | |
7154 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
7155 | iverdaux->vda_name); | |
7156 | if (iverdaux->vda_nodename == NULL) | |
d0fb9a8d | 7157 | goto error_return_verdef; |
252b5132 RH |
7158 | |
7159 | if (j + 1 < iverdef->vd_cnt) | |
7160 | iverdaux->vda_nextptr = iverdaux + 1; | |
7161 | else | |
7162 | iverdaux->vda_nextptr = NULL; | |
7163 | ||
d0fb9a8d JJ |
7164 | if (iverdaux->vda_next |
7165 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
7166 | goto error_return_verdef; | |
7167 | ||
252b5132 RH |
7168 | everdaux = ((Elf_External_Verdaux *) |
7169 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
7170 | } | |
7171 | ||
d0fb9a8d JJ |
7172 | if (iverdef->vd_cnt) |
7173 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 7174 | |
d0fb9a8d | 7175 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 RH |
7176 | iverdef->vd_nextdef = iverdef + 1; |
7177 | else | |
7178 | iverdef->vd_nextdef = NULL; | |
7179 | ||
7180 | everdef = ((Elf_External_Verdef *) | |
7181 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
7182 | } | |
7183 | ||
7184 | free (contents); | |
7185 | contents = NULL; | |
7186 | } | |
fc0e6df6 | 7187 | else if (default_imported_symver) |
252b5132 | 7188 | { |
fc0e6df6 PB |
7189 | if (freeidx < 3) |
7190 | freeidx = 3; | |
7191 | else | |
7192 | freeidx++; | |
252b5132 | 7193 | |
a50b1753 NC |
7194 | elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) |
7195 | bfd_zalloc2 (abfd, freeidx, sizeof (Elf_Internal_Verdef)); | |
fc0e6df6 | 7196 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
7197 | goto error_return; |
7198 | ||
fc0e6df6 PB |
7199 | elf_tdata (abfd)->cverdefs = freeidx; |
7200 | } | |
252b5132 | 7201 | |
fc0e6df6 PB |
7202 | /* Create a default version based on the soname. */ |
7203 | if (default_imported_symver) | |
7204 | { | |
7205 | Elf_Internal_Verdef *iverdef; | |
7206 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 7207 | |
fc0e6df6 | 7208 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 7209 | |
fc0e6df6 PB |
7210 | iverdef->vd_version = VER_DEF_CURRENT; |
7211 | iverdef->vd_flags = 0; | |
7212 | iverdef->vd_ndx = freeidx; | |
7213 | iverdef->vd_cnt = 1; | |
252b5132 | 7214 | |
fc0e6df6 | 7215 | iverdef->vd_bfd = abfd; |
252b5132 | 7216 | |
fc0e6df6 PB |
7217 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
7218 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 7219 | goto error_return_verdef; |
fc0e6df6 | 7220 | iverdef->vd_nextdef = NULL; |
a50b1753 NC |
7221 | iverdef->vd_auxptr = (struct elf_internal_verdaux *) |
7222 | bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux)); | |
d0fb9a8d JJ |
7223 | if (iverdef->vd_auxptr == NULL) |
7224 | goto error_return_verdef; | |
252b5132 | 7225 | |
fc0e6df6 PB |
7226 | iverdaux = iverdef->vd_auxptr; |
7227 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
7228 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
7229 | } |
7230 | ||
b34976b6 | 7231 | return TRUE; |
252b5132 RH |
7232 | |
7233 | error_return: | |
5ed6aba4 | 7234 | if (contents != NULL) |
252b5132 | 7235 | free (contents); |
b34976b6 | 7236 | return FALSE; |
252b5132 RH |
7237 | } |
7238 | \f | |
7239 | asymbol * | |
217aa764 | 7240 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
7241 | { |
7242 | elf_symbol_type *newsym; | |
dc810e39 | 7243 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 7244 | |
a50b1753 | 7245 | newsym = (elf_symbol_type *) bfd_zalloc (abfd, amt); |
252b5132 RH |
7246 | if (!newsym) |
7247 | return NULL; | |
7248 | else | |
7249 | { | |
7250 | newsym->symbol.the_bfd = abfd; | |
7251 | return &newsym->symbol; | |
7252 | } | |
7253 | } | |
7254 | ||
7255 | void | |
217aa764 AM |
7256 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
7257 | asymbol *symbol, | |
7258 | symbol_info *ret) | |
252b5132 RH |
7259 | { |
7260 | bfd_symbol_info (symbol, ret); | |
7261 | } | |
7262 | ||
7263 | /* Return whether a symbol name implies a local symbol. Most targets | |
7264 | use this function for the is_local_label_name entry point, but some | |
7265 | override it. */ | |
7266 | ||
b34976b6 | 7267 | bfd_boolean |
217aa764 AM |
7268 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
7269 | const char *name) | |
252b5132 RH |
7270 | { |
7271 | /* Normal local symbols start with ``.L''. */ | |
7272 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 7273 | return TRUE; |
252b5132 RH |
7274 | |
7275 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
7276 | DWARF debugging symbols starting with ``..''. */ | |
7277 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 7278 | return TRUE; |
252b5132 RH |
7279 | |
7280 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
7281 | emitting DWARF debugging output. I suspect this is actually a | |
7282 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
7283 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
7284 | underscore to be emitted on some ELF targets). For ease of use, | |
7285 | we treat such symbols as local. */ | |
7286 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 7287 | return TRUE; |
252b5132 | 7288 | |
b34976b6 | 7289 | return FALSE; |
252b5132 RH |
7290 | } |
7291 | ||
7292 | alent * | |
217aa764 AM |
7293 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
7294 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
7295 | { |
7296 | abort (); | |
7297 | return NULL; | |
7298 | } | |
7299 | ||
b34976b6 | 7300 | bfd_boolean |
217aa764 AM |
7301 | _bfd_elf_set_arch_mach (bfd *abfd, |
7302 | enum bfd_architecture arch, | |
7303 | unsigned long machine) | |
252b5132 RH |
7304 | { |
7305 | /* If this isn't the right architecture for this backend, and this | |
7306 | isn't the generic backend, fail. */ | |
7307 | if (arch != get_elf_backend_data (abfd)->arch | |
7308 | && arch != bfd_arch_unknown | |
7309 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 7310 | return FALSE; |
252b5132 RH |
7311 | |
7312 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
7313 | } | |
7314 | ||
d1fad7c6 NC |
7315 | /* Find the function to a particular section and offset, |
7316 | for error reporting. */ | |
252b5132 | 7317 | |
b34976b6 | 7318 | static bfd_boolean |
b9d678e0 | 7319 | elf_find_function (bfd *abfd, |
217aa764 AM |
7320 | asection *section, |
7321 | asymbol **symbols, | |
7322 | bfd_vma offset, | |
7323 | const char **filename_ptr, | |
7324 | const char **functionname_ptr) | |
252b5132 | 7325 | { |
252b5132 | 7326 | const char *filename; |
57426232 | 7327 | asymbol *func, *file; |
252b5132 RH |
7328 | bfd_vma low_func; |
7329 | asymbol **p; | |
57426232 JB |
7330 | /* ??? Given multiple file symbols, it is impossible to reliably |
7331 | choose the right file name for global symbols. File symbols are | |
7332 | local symbols, and thus all file symbols must sort before any | |
7333 | global symbols. The ELF spec may be interpreted to say that a | |
7334 | file symbol must sort before other local symbols, but currently | |
7335 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
7336 | make a better choice of file name for local symbols by ignoring | |
7337 | file symbols appearing after a given local symbol. */ | |
7338 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
b9d678e0 | 7339 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 7340 | |
252b5132 RH |
7341 | filename = NULL; |
7342 | func = NULL; | |
57426232 | 7343 | file = NULL; |
252b5132 | 7344 | low_func = 0; |
57426232 | 7345 | state = nothing_seen; |
252b5132 RH |
7346 | |
7347 | for (p = symbols; *p != NULL; p++) | |
7348 | { | |
7349 | elf_symbol_type *q; | |
b9d678e0 | 7350 | unsigned int type; |
252b5132 RH |
7351 | |
7352 | q = (elf_symbol_type *) *p; | |
7353 | ||
b9d678e0 L |
7354 | type = ELF_ST_TYPE (q->internal_elf_sym.st_info); |
7355 | switch (type) | |
252b5132 | 7356 | { |
252b5132 | 7357 | case STT_FILE: |
57426232 JB |
7358 | file = &q->symbol; |
7359 | if (state == symbol_seen) | |
7360 | state = file_after_symbol_seen; | |
7361 | continue; | |
b9d678e0 L |
7362 | default: |
7363 | if (!bed->is_function_type (type)) | |
7364 | break; | |
252b5132 | 7365 | case STT_NOTYPE: |
6b40fcba | 7366 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
7367 | && q->symbol.value >= low_func |
7368 | && q->symbol.value <= offset) | |
7369 | { | |
7370 | func = (asymbol *) q; | |
7371 | low_func = q->symbol.value; | |
a1923858 AM |
7372 | filename = NULL; |
7373 | if (file != NULL | |
7374 | && (ELF_ST_BIND (q->internal_elf_sym.st_info) == STB_LOCAL | |
7375 | || state != file_after_symbol_seen)) | |
57426232 | 7376 | filename = bfd_asymbol_name (file); |
252b5132 RH |
7377 | } |
7378 | break; | |
7379 | } | |
57426232 JB |
7380 | if (state == nothing_seen) |
7381 | state = symbol_seen; | |
252b5132 RH |
7382 | } |
7383 | ||
7384 | if (func == NULL) | |
b34976b6 | 7385 | return FALSE; |
252b5132 | 7386 | |
d1fad7c6 NC |
7387 | if (filename_ptr) |
7388 | *filename_ptr = filename; | |
7389 | if (functionname_ptr) | |
7390 | *functionname_ptr = bfd_asymbol_name (func); | |
7391 | ||
b34976b6 | 7392 | return TRUE; |
d1fad7c6 NC |
7393 | } |
7394 | ||
7395 | /* Find the nearest line to a particular section and offset, | |
7396 | for error reporting. */ | |
7397 | ||
b34976b6 | 7398 | bfd_boolean |
217aa764 AM |
7399 | _bfd_elf_find_nearest_line (bfd *abfd, |
7400 | asection *section, | |
7401 | asymbol **symbols, | |
7402 | bfd_vma offset, | |
7403 | const char **filename_ptr, | |
7404 | const char **functionname_ptr, | |
7405 | unsigned int *line_ptr) | |
d1fad7c6 | 7406 | { |
b34976b6 | 7407 | bfd_boolean found; |
d1fad7c6 NC |
7408 | |
7409 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7410 | filename_ptr, functionname_ptr, |
7411 | line_ptr)) | |
d1fad7c6 NC |
7412 | { |
7413 | if (!*functionname_ptr) | |
4e8a9624 AM |
7414 | elf_find_function (abfd, section, symbols, offset, |
7415 | *filename_ptr ? NULL : filename_ptr, | |
7416 | functionname_ptr); | |
7417 | ||
b34976b6 | 7418 | return TRUE; |
d1fad7c6 NC |
7419 | } |
7420 | ||
7421 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7422 | filename_ptr, functionname_ptr, |
7423 | line_ptr, 0, | |
7424 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
7425 | { |
7426 | if (!*functionname_ptr) | |
4e8a9624 AM |
7427 | elf_find_function (abfd, section, symbols, offset, |
7428 | *filename_ptr ? NULL : filename_ptr, | |
7429 | functionname_ptr); | |
7430 | ||
b34976b6 | 7431 | return TRUE; |
d1fad7c6 NC |
7432 | } |
7433 | ||
7434 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
7435 | &found, filename_ptr, |
7436 | functionname_ptr, line_ptr, | |
7437 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 7438 | return FALSE; |
dc43ada5 | 7439 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 7440 | return TRUE; |
d1fad7c6 NC |
7441 | |
7442 | if (symbols == NULL) | |
b34976b6 | 7443 | return FALSE; |
d1fad7c6 NC |
7444 | |
7445 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 7446 | filename_ptr, functionname_ptr)) |
b34976b6 | 7447 | return FALSE; |
d1fad7c6 | 7448 | |
252b5132 | 7449 | *line_ptr = 0; |
b34976b6 | 7450 | return TRUE; |
252b5132 RH |
7451 | } |
7452 | ||
5420f73d L |
7453 | /* Find the line for a symbol. */ |
7454 | ||
7455 | bfd_boolean | |
7456 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, | |
7457 | const char **filename_ptr, unsigned int *line_ptr) | |
7458 | { | |
7459 | return _bfd_dwarf2_find_line (abfd, symbols, symbol, | |
7460 | filename_ptr, line_ptr, 0, | |
7461 | &elf_tdata (abfd)->dwarf2_find_line_info); | |
7462 | } | |
7463 | ||
4ab527b0 FF |
7464 | /* After a call to bfd_find_nearest_line, successive calls to |
7465 | bfd_find_inliner_info can be used to get source information about | |
7466 | each level of function inlining that terminated at the address | |
7467 | passed to bfd_find_nearest_line. Currently this is only supported | |
7468 | for DWARF2 with appropriate DWARF3 extensions. */ | |
7469 | ||
7470 | bfd_boolean | |
7471 | _bfd_elf_find_inliner_info (bfd *abfd, | |
7472 | const char **filename_ptr, | |
7473 | const char **functionname_ptr, | |
7474 | unsigned int *line_ptr) | |
7475 | { | |
7476 | bfd_boolean found; | |
7477 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
7478 | functionname_ptr, line_ptr, | |
7479 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
7480 | return found; | |
7481 | } | |
7482 | ||
252b5132 | 7483 | int |
a6b96beb | 7484 | _bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 7485 | { |
8ded5a0f AM |
7486 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7487 | int ret = bed->s->sizeof_ehdr; | |
252b5132 | 7488 | |
a6b96beb | 7489 | if (!info->relocatable) |
8ded5a0f | 7490 | { |
62d7a5f6 | 7491 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
8ded5a0f | 7492 | |
62d7a5f6 AM |
7493 | if (phdr_size == (bfd_size_type) -1) |
7494 | { | |
7495 | struct elf_segment_map *m; | |
7496 | ||
7497 | phdr_size = 0; | |
7498 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
7499 | phdr_size += bed->s->sizeof_phdr; | |
8ded5a0f | 7500 | |
62d7a5f6 AM |
7501 | if (phdr_size == 0) |
7502 | phdr_size = get_program_header_size (abfd, info); | |
7503 | } | |
8ded5a0f AM |
7504 | |
7505 | elf_tdata (abfd)->program_header_size = phdr_size; | |
7506 | ret += phdr_size; | |
7507 | } | |
7508 | ||
252b5132 RH |
7509 | return ret; |
7510 | } | |
7511 | ||
b34976b6 | 7512 | bfd_boolean |
217aa764 AM |
7513 | _bfd_elf_set_section_contents (bfd *abfd, |
7514 | sec_ptr section, | |
0f867abe | 7515 | const void *location, |
217aa764 AM |
7516 | file_ptr offset, |
7517 | bfd_size_type count) | |
252b5132 RH |
7518 | { |
7519 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 7520 | bfd_signed_vma pos; |
252b5132 RH |
7521 | |
7522 | if (! abfd->output_has_begun | |
217aa764 | 7523 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 7524 | return FALSE; |
252b5132 RH |
7525 | |
7526 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
7527 | pos = hdr->sh_offset + offset; |
7528 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
7529 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 7530 | return FALSE; |
252b5132 | 7531 | |
b34976b6 | 7532 | return TRUE; |
252b5132 RH |
7533 | } |
7534 | ||
7535 | void | |
217aa764 AM |
7536 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
7537 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
7538 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
7539 | { |
7540 | abort (); | |
7541 | } | |
7542 | ||
252b5132 RH |
7543 | /* Try to convert a non-ELF reloc into an ELF one. */ |
7544 | ||
b34976b6 | 7545 | bfd_boolean |
217aa764 | 7546 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 7547 | { |
c044fabd | 7548 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
7549 | |
7550 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
7551 | { | |
7552 | bfd_reloc_code_real_type code; | |
7553 | reloc_howto_type *howto; | |
7554 | ||
7555 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 7556 | equivalent ELF reloc. */ |
252b5132 RH |
7557 | |
7558 | if (areloc->howto->pc_relative) | |
7559 | { | |
7560 | switch (areloc->howto->bitsize) | |
7561 | { | |
7562 | case 8: | |
7563 | code = BFD_RELOC_8_PCREL; | |
7564 | break; | |
7565 | case 12: | |
7566 | code = BFD_RELOC_12_PCREL; | |
7567 | break; | |
7568 | case 16: | |
7569 | code = BFD_RELOC_16_PCREL; | |
7570 | break; | |
7571 | case 24: | |
7572 | code = BFD_RELOC_24_PCREL; | |
7573 | break; | |
7574 | case 32: | |
7575 | code = BFD_RELOC_32_PCREL; | |
7576 | break; | |
7577 | case 64: | |
7578 | code = BFD_RELOC_64_PCREL; | |
7579 | break; | |
7580 | default: | |
7581 | goto fail; | |
7582 | } | |
7583 | ||
7584 | howto = bfd_reloc_type_lookup (abfd, code); | |
7585 | ||
7586 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
7587 | { | |
7588 | if (howto->pcrel_offset) | |
7589 | areloc->addend += areloc->address; | |
7590 | else | |
7591 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
7592 | } | |
7593 | } | |
7594 | else | |
7595 | { | |
7596 | switch (areloc->howto->bitsize) | |
7597 | { | |
7598 | case 8: | |
7599 | code = BFD_RELOC_8; | |
7600 | break; | |
7601 | case 14: | |
7602 | code = BFD_RELOC_14; | |
7603 | break; | |
7604 | case 16: | |
7605 | code = BFD_RELOC_16; | |
7606 | break; | |
7607 | case 26: | |
7608 | code = BFD_RELOC_26; | |
7609 | break; | |
7610 | case 32: | |
7611 | code = BFD_RELOC_32; | |
7612 | break; | |
7613 | case 64: | |
7614 | code = BFD_RELOC_64; | |
7615 | break; | |
7616 | default: | |
7617 | goto fail; | |
7618 | } | |
7619 | ||
7620 | howto = bfd_reloc_type_lookup (abfd, code); | |
7621 | } | |
7622 | ||
7623 | if (howto) | |
7624 | areloc->howto = howto; | |
7625 | else | |
7626 | goto fail; | |
7627 | } | |
7628 | ||
b34976b6 | 7629 | return TRUE; |
252b5132 RH |
7630 | |
7631 | fail: | |
7632 | (*_bfd_error_handler) | |
d003868e AM |
7633 | (_("%B: unsupported relocation type %s"), |
7634 | abfd, areloc->howto->name); | |
252b5132 | 7635 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7636 | return FALSE; |
252b5132 RH |
7637 | } |
7638 | ||
b34976b6 | 7639 | bfd_boolean |
217aa764 | 7640 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
7641 | { |
7642 | if (bfd_get_format (abfd) == bfd_object) | |
7643 | { | |
b25e3d87 | 7644 | if (elf_tdata (abfd) != NULL && elf_shstrtab (abfd) != NULL) |
2b0f7ef9 | 7645 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 7646 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
7647 | } |
7648 | ||
7649 | return _bfd_generic_close_and_cleanup (abfd); | |
7650 | } | |
7651 | ||
7652 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
7653 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
7654 | range-checking to interfere. There is nothing else to do in processing | |
7655 | this reloc. */ | |
7656 | ||
7657 | bfd_reloc_status_type | |
217aa764 AM |
7658 | _bfd_elf_rel_vtable_reloc_fn |
7659 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 7660 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
7661 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
7662 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
7663 | { |
7664 | return bfd_reloc_ok; | |
7665 | } | |
252b5132 RH |
7666 | \f |
7667 | /* Elf core file support. Much of this only works on native | |
7668 | toolchains, since we rely on knowing the | |
7669 | machine-dependent procfs structure in order to pick | |
c044fabd | 7670 | out details about the corefile. */ |
252b5132 RH |
7671 | |
7672 | #ifdef HAVE_SYS_PROCFS_H | |
16231b7b DG |
7673 | /* Needed for new procfs interface on sparc-solaris. */ |
7674 | # define _STRUCTURED_PROC 1 | |
252b5132 RH |
7675 | # include <sys/procfs.h> |
7676 | #endif | |
7677 | ||
261b8d08 PA |
7678 | /* Return a PID that identifies a "thread" for threaded cores, or the |
7679 | PID of the main process for non-threaded cores. */ | |
252b5132 RH |
7680 | |
7681 | static int | |
217aa764 | 7682 | elfcore_make_pid (bfd *abfd) |
252b5132 | 7683 | { |
261b8d08 PA |
7684 | int pid; |
7685 | ||
7686 | pid = elf_tdata (abfd)->core_lwpid; | |
7687 | if (pid == 0) | |
7688 | pid = elf_tdata (abfd)->core_pid; | |
7689 | ||
7690 | return pid; | |
252b5132 RH |
7691 | } |
7692 | ||
252b5132 RH |
7693 | /* If there isn't a section called NAME, make one, using |
7694 | data from SECT. Note, this function will generate a | |
7695 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 7696 | overwrite it. */ |
252b5132 | 7697 | |
b34976b6 | 7698 | static bfd_boolean |
217aa764 | 7699 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 7700 | { |
c044fabd | 7701 | asection *sect2; |
252b5132 RH |
7702 | |
7703 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 7704 | return TRUE; |
252b5132 | 7705 | |
117ed4f8 | 7706 | sect2 = bfd_make_section_with_flags (abfd, name, sect->flags); |
252b5132 | 7707 | if (sect2 == NULL) |
b34976b6 | 7708 | return FALSE; |
252b5132 | 7709 | |
eea6121a | 7710 | sect2->size = sect->size; |
252b5132 | 7711 | sect2->filepos = sect->filepos; |
252b5132 | 7712 | sect2->alignment_power = sect->alignment_power; |
b34976b6 | 7713 | return TRUE; |
252b5132 RH |
7714 | } |
7715 | ||
bb0082d6 AM |
7716 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
7717 | actually creates up to two pseudosections: | |
7718 | - For the single-threaded case, a section named NAME, unless | |
7719 | such a section already exists. | |
7720 | - For the multi-threaded case, a section named "NAME/PID", where | |
7721 | PID is elfcore_make_pid (abfd). | |
7722 | Both pseudosections have identical contents. */ | |
b34976b6 | 7723 | bfd_boolean |
217aa764 AM |
7724 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
7725 | char *name, | |
7726 | size_t size, | |
7727 | ufile_ptr filepos) | |
bb0082d6 AM |
7728 | { |
7729 | char buf[100]; | |
7730 | char *threaded_name; | |
d4c88bbb | 7731 | size_t len; |
bb0082d6 AM |
7732 | asection *sect; |
7733 | ||
7734 | /* Build the section name. */ | |
7735 | ||
7736 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 7737 | len = strlen (buf) + 1; |
a50b1753 | 7738 | threaded_name = (char *) bfd_alloc (abfd, len); |
bb0082d6 | 7739 | if (threaded_name == NULL) |
b34976b6 | 7740 | return FALSE; |
d4c88bbb | 7741 | memcpy (threaded_name, buf, len); |
bb0082d6 | 7742 | |
117ed4f8 AM |
7743 | sect = bfd_make_section_anyway_with_flags (abfd, threaded_name, |
7744 | SEC_HAS_CONTENTS); | |
bb0082d6 | 7745 | if (sect == NULL) |
b34976b6 | 7746 | return FALSE; |
eea6121a | 7747 | sect->size = size; |
bb0082d6 | 7748 | sect->filepos = filepos; |
bb0082d6 AM |
7749 | sect->alignment_power = 2; |
7750 | ||
936e320b | 7751 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
7752 | } |
7753 | ||
252b5132 | 7754 | /* prstatus_t exists on: |
4a938328 | 7755 | solaris 2.5+ |
252b5132 RH |
7756 | linux 2.[01] + glibc |
7757 | unixware 4.2 | |
7758 | */ | |
7759 | ||
7760 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 7761 | |
b34976b6 | 7762 | static bfd_boolean |
217aa764 | 7763 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7764 | { |
eea6121a | 7765 | size_t size; |
7ee38065 | 7766 | int offset; |
252b5132 | 7767 | |
4a938328 MS |
7768 | if (note->descsz == sizeof (prstatus_t)) |
7769 | { | |
7770 | prstatus_t prstat; | |
252b5132 | 7771 | |
eea6121a | 7772 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7773 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 7774 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 7775 | |
fa49d224 NC |
7776 | /* Do not overwrite the core signal if it |
7777 | has already been set by another thread. */ | |
7778 | if (elf_tdata (abfd)->core_signal == 0) | |
7779 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
261b8d08 PA |
7780 | if (elf_tdata (abfd)->core_pid == 0) |
7781 | elf_tdata (abfd)->core_pid = prstat.pr_pid; | |
252b5132 | 7782 | |
4a938328 MS |
7783 | /* pr_who exists on: |
7784 | solaris 2.5+ | |
7785 | unixware 4.2 | |
7786 | pr_who doesn't exist on: | |
7787 | linux 2.[01] | |
7788 | */ | |
252b5132 | 7789 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 7790 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
261b8d08 PA |
7791 | #else |
7792 | elf_tdata (abfd)->core_lwpid = prstat.pr_pid; | |
252b5132 | 7793 | #endif |
4a938328 | 7794 | } |
7ee38065 | 7795 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
7796 | else if (note->descsz == sizeof (prstatus32_t)) |
7797 | { | |
7798 | /* 64-bit host, 32-bit corefile */ | |
7799 | prstatus32_t prstat; | |
7800 | ||
eea6121a | 7801 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7802 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
7803 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
7804 | ||
fa49d224 NC |
7805 | /* Do not overwrite the core signal if it |
7806 | has already been set by another thread. */ | |
7807 | if (elf_tdata (abfd)->core_signal == 0) | |
7808 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
261b8d08 PA |
7809 | if (elf_tdata (abfd)->core_pid == 0) |
7810 | elf_tdata (abfd)->core_pid = prstat.pr_pid; | |
4a938328 MS |
7811 | |
7812 | /* pr_who exists on: | |
7813 | solaris 2.5+ | |
7814 | unixware 4.2 | |
7815 | pr_who doesn't exist on: | |
7816 | linux 2.[01] | |
7817 | */ | |
7ee38065 | 7818 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 | 7819 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
261b8d08 PA |
7820 | #else |
7821 | elf_tdata (abfd)->core_lwpid = prstat.pr_pid; | |
4a938328 MS |
7822 | #endif |
7823 | } | |
7ee38065 | 7824 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
7825 | else |
7826 | { | |
7827 | /* Fail - we don't know how to handle any other | |
7828 | note size (ie. data object type). */ | |
b34976b6 | 7829 | return TRUE; |
4a938328 | 7830 | } |
252b5132 | 7831 | |
bb0082d6 | 7832 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 7833 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 7834 | size, note->descpos + offset); |
252b5132 RH |
7835 | } |
7836 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
7837 | ||
bb0082d6 | 7838 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 7839 | static bfd_boolean |
217aa764 AM |
7840 | elfcore_make_note_pseudosection (bfd *abfd, |
7841 | char *name, | |
7842 | Elf_Internal_Note *note) | |
252b5132 | 7843 | { |
936e320b AM |
7844 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7845 | note->descsz, note->descpos); | |
252b5132 RH |
7846 | } |
7847 | ||
ff08c6bb JB |
7848 | /* There isn't a consistent prfpregset_t across platforms, |
7849 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7850 | data structure apart. */ |
7851 | ||
b34976b6 | 7852 | static bfd_boolean |
217aa764 | 7853 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7854 | { |
7855 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7856 | } | |
7857 | ||
ff08c6bb | 7858 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
971d4640 | 7859 | type of NT_PRXFPREG. Just include the whole note's contents |
ff08c6bb | 7860 | literally. */ |
c044fabd | 7861 | |
b34976b6 | 7862 | static bfd_boolean |
217aa764 | 7863 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7864 | { |
7865 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7866 | } | |
7867 | ||
4339cae0 L |
7868 | /* Linux dumps the Intel XSAVE extended state in a note named "LINUX" |
7869 | with a note type of NT_X86_XSTATE. Just include the whole note's | |
7870 | contents literally. */ | |
7871 | ||
7872 | static bfd_boolean | |
7873 | elfcore_grok_xstatereg (bfd *abfd, Elf_Internal_Note *note) | |
7874 | { | |
7875 | return elfcore_make_note_pseudosection (abfd, ".reg-xstate", note); | |
7876 | } | |
7877 | ||
97753bd5 AM |
7878 | static bfd_boolean |
7879 | elfcore_grok_ppc_vmx (bfd *abfd, Elf_Internal_Note *note) | |
7880 | { | |
7881 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vmx", note); | |
7882 | } | |
7883 | ||
89eeb0bc LM |
7884 | static bfd_boolean |
7885 | elfcore_grok_ppc_vsx (bfd *abfd, Elf_Internal_Note *note) | |
7886 | { | |
7887 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vsx", note); | |
7888 | } | |
97753bd5 | 7889 | |
0675e188 UW |
7890 | static bfd_boolean |
7891 | elfcore_grok_s390_high_gprs (bfd *abfd, Elf_Internal_Note *note) | |
7892 | { | |
7893 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-high-gprs", note); | |
7894 | } | |
7895 | ||
d7eeb400 MS |
7896 | static bfd_boolean |
7897 | elfcore_grok_s390_timer (bfd *abfd, Elf_Internal_Note *note) | |
7898 | { | |
7899 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-timer", note); | |
7900 | } | |
7901 | ||
7902 | static bfd_boolean | |
7903 | elfcore_grok_s390_todcmp (bfd *abfd, Elf_Internal_Note *note) | |
7904 | { | |
7905 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-todcmp", note); | |
7906 | } | |
7907 | ||
7908 | static bfd_boolean | |
7909 | elfcore_grok_s390_todpreg (bfd *abfd, Elf_Internal_Note *note) | |
7910 | { | |
7911 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-todpreg", note); | |
7912 | } | |
7913 | ||
7914 | static bfd_boolean | |
7915 | elfcore_grok_s390_ctrs (bfd *abfd, Elf_Internal_Note *note) | |
7916 | { | |
7917 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-ctrs", note); | |
7918 | } | |
7919 | ||
7920 | static bfd_boolean | |
7921 | elfcore_grok_s390_prefix (bfd *abfd, Elf_Internal_Note *note) | |
7922 | { | |
7923 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-prefix", note); | |
7924 | } | |
7925 | ||
252b5132 | 7926 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7927 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7928 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7929 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7930 | #endif | |
252b5132 RH |
7931 | #endif |
7932 | ||
7933 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7934 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7935 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7936 | typedef psinfo32_t elfcore_psinfo32_t; |
7937 | #endif | |
252b5132 RH |
7938 | #endif |
7939 | ||
252b5132 RH |
7940 | /* return a malloc'ed copy of a string at START which is at |
7941 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7942 | the copy will always have a terminating '\0'. */ |
252b5132 | 7943 | |
936e320b | 7944 | char * |
217aa764 | 7945 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7946 | { |
dc810e39 | 7947 | char *dups; |
a50b1753 | 7948 | char *end = (char *) memchr (start, '\0', max); |
dc810e39 | 7949 | size_t len; |
252b5132 RH |
7950 | |
7951 | if (end == NULL) | |
7952 | len = max; | |
7953 | else | |
7954 | len = end - start; | |
7955 | ||
a50b1753 | 7956 | dups = (char *) bfd_alloc (abfd, len + 1); |
dc810e39 | 7957 | if (dups == NULL) |
252b5132 RH |
7958 | return NULL; |
7959 | ||
dc810e39 AM |
7960 | memcpy (dups, start, len); |
7961 | dups[len] = '\0'; | |
252b5132 | 7962 | |
dc810e39 | 7963 | return dups; |
252b5132 RH |
7964 | } |
7965 | ||
bb0082d6 | 7966 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7967 | static bfd_boolean |
217aa764 | 7968 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7969 | { |
4a938328 MS |
7970 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7971 | { | |
7972 | elfcore_psinfo_t psinfo; | |
252b5132 | 7973 | |
7ee38065 | 7974 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7975 | |
4a938328 | 7976 | elf_tdata (abfd)->core_program |
936e320b AM |
7977 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7978 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7979 | |
4a938328 | 7980 | elf_tdata (abfd)->core_command |
936e320b AM |
7981 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7982 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7983 | } |
7ee38065 | 7984 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7985 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7986 | { | |
7987 | /* 64-bit host, 32-bit corefile */ | |
7988 | elfcore_psinfo32_t psinfo; | |
7989 | ||
7ee38065 | 7990 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7991 | |
4a938328 | 7992 | elf_tdata (abfd)->core_program |
936e320b AM |
7993 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7994 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7995 | |
7996 | elf_tdata (abfd)->core_command | |
936e320b AM |
7997 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7998 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7999 | } |
8000 | #endif | |
8001 | ||
8002 | else | |
8003 | { | |
8004 | /* Fail - we don't know how to handle any other | |
8005 | note size (ie. data object type). */ | |
b34976b6 | 8006 | return TRUE; |
4a938328 | 8007 | } |
252b5132 RH |
8008 | |
8009 | /* Note that for some reason, a spurious space is tacked | |
8010 | onto the end of the args in some (at least one anyway) | |
c044fabd | 8011 | implementations, so strip it off if it exists. */ |
252b5132 RH |
8012 | |
8013 | { | |
c044fabd | 8014 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
8015 | int n = strlen (command); |
8016 | ||
8017 | if (0 < n && command[n - 1] == ' ') | |
8018 | command[n - 1] = '\0'; | |
8019 | } | |
8020 | ||
b34976b6 | 8021 | return TRUE; |
252b5132 RH |
8022 | } |
8023 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
8024 | ||
252b5132 | 8025 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 8026 | static bfd_boolean |
217aa764 | 8027 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 8028 | { |
f572a39d AM |
8029 | if (note->descsz == sizeof (pstatus_t) |
8030 | #if defined (HAVE_PXSTATUS_T) | |
8031 | || note->descsz == sizeof (pxstatus_t) | |
8032 | #endif | |
8033 | ) | |
4a938328 MS |
8034 | { |
8035 | pstatus_t pstat; | |
252b5132 | 8036 | |
4a938328 | 8037 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 8038 | |
4a938328 MS |
8039 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
8040 | } | |
7ee38065 | 8041 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
8042 | else if (note->descsz == sizeof (pstatus32_t)) |
8043 | { | |
8044 | /* 64-bit host, 32-bit corefile */ | |
8045 | pstatus32_t pstat; | |
252b5132 | 8046 | |
4a938328 | 8047 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 8048 | |
4a938328 MS |
8049 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
8050 | } | |
8051 | #endif | |
252b5132 RH |
8052 | /* Could grab some more details from the "representative" |
8053 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 8054 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 8055 | |
b34976b6 | 8056 | return TRUE; |
252b5132 RH |
8057 | } |
8058 | #endif /* defined (HAVE_PSTATUS_T) */ | |
8059 | ||
252b5132 | 8060 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 8061 | static bfd_boolean |
217aa764 | 8062 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
8063 | { |
8064 | lwpstatus_t lwpstat; | |
8065 | char buf[100]; | |
c044fabd | 8066 | char *name; |
d4c88bbb | 8067 | size_t len; |
c044fabd | 8068 | asection *sect; |
252b5132 | 8069 | |
f572a39d AM |
8070 | if (note->descsz != sizeof (lwpstat) |
8071 | #if defined (HAVE_LWPXSTATUS_T) | |
8072 | && note->descsz != sizeof (lwpxstatus_t) | |
8073 | #endif | |
8074 | ) | |
b34976b6 | 8075 | return TRUE; |
252b5132 RH |
8076 | |
8077 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
8078 | ||
8079 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
a1504221 JB |
8080 | /* Do not overwrite the core signal if it has already been set by |
8081 | another thread. */ | |
8082 | if (elf_tdata (abfd)->core_signal == 0) | |
8083 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
252b5132 | 8084 | |
c044fabd | 8085 | /* Make a ".reg/999" section. */ |
252b5132 RH |
8086 | |
8087 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 8088 | len = strlen (buf) + 1; |
217aa764 | 8089 | name = bfd_alloc (abfd, len); |
252b5132 | 8090 | if (name == NULL) |
b34976b6 | 8091 | return FALSE; |
d4c88bbb | 8092 | memcpy (name, buf, len); |
252b5132 | 8093 | |
117ed4f8 | 8094 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 8095 | if (sect == NULL) |
b34976b6 | 8096 | return FALSE; |
252b5132 RH |
8097 | |
8098 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 8099 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
8100 | sect->filepos = note->descpos |
8101 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
8102 | #endif | |
8103 | ||
8104 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 8105 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
8106 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
8107 | #endif | |
8108 | ||
252b5132 RH |
8109 | sect->alignment_power = 2; |
8110 | ||
8111 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 8112 | return FALSE; |
252b5132 RH |
8113 | |
8114 | /* Make a ".reg2/999" section */ | |
8115 | ||
8116 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 8117 | len = strlen (buf) + 1; |
217aa764 | 8118 | name = bfd_alloc (abfd, len); |
252b5132 | 8119 | if (name == NULL) |
b34976b6 | 8120 | return FALSE; |
d4c88bbb | 8121 | memcpy (name, buf, len); |
252b5132 | 8122 | |
117ed4f8 | 8123 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 8124 | if (sect == NULL) |
b34976b6 | 8125 | return FALSE; |
252b5132 RH |
8126 | |
8127 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 8128 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
8129 | sect->filepos = note->descpos |
8130 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
8131 | #endif | |
8132 | ||
8133 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 8134 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
8135 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
8136 | #endif | |
8137 | ||
252b5132 RH |
8138 | sect->alignment_power = 2; |
8139 | ||
936e320b | 8140 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
8141 | } |
8142 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
8143 | ||
b34976b6 | 8144 | static bfd_boolean |
217aa764 | 8145 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
8146 | { |
8147 | char buf[30]; | |
c044fabd | 8148 | char *name; |
d4c88bbb | 8149 | size_t len; |
c044fabd | 8150 | asection *sect; |
4a6636fb PA |
8151 | int type; |
8152 | int is_active_thread; | |
8153 | bfd_vma base_addr; | |
16e9c715 | 8154 | |
4a6636fb | 8155 | if (note->descsz < 728) |
b34976b6 | 8156 | return TRUE; |
16e9c715 | 8157 | |
4a6636fb PA |
8158 | if (! CONST_STRNEQ (note->namedata, "win32")) |
8159 | return TRUE; | |
8160 | ||
8161 | type = bfd_get_32 (abfd, note->descdata); | |
c044fabd | 8162 | |
4a6636fb | 8163 | switch (type) |
16e9c715 | 8164 | { |
4a6636fb | 8165 | case 1 /* NOTE_INFO_PROCESS */: |
16e9c715 | 8166 | /* FIXME: need to add ->core_command. */ |
4a6636fb PA |
8167 | /* process_info.pid */ |
8168 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 8); | |
8169 | /* process_info.signal */ | |
8170 | elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 12); | |
c044fabd | 8171 | break; |
16e9c715 | 8172 | |
4a6636fb | 8173 | case 2 /* NOTE_INFO_THREAD */: |
16e9c715 | 8174 | /* Make a ".reg/999" section. */ |
4a6636fb PA |
8175 | /* thread_info.tid */ |
8176 | sprintf (buf, ".reg/%ld", (long) bfd_get_32 (abfd, note->descdata + 8)); | |
c044fabd | 8177 | |
d4c88bbb | 8178 | len = strlen (buf) + 1; |
a50b1753 | 8179 | name = (char *) bfd_alloc (abfd, len); |
16e9c715 | 8180 | if (name == NULL) |
b34976b6 | 8181 | return FALSE; |
c044fabd | 8182 | |
d4c88bbb | 8183 | memcpy (name, buf, len); |
16e9c715 | 8184 | |
117ed4f8 | 8185 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
16e9c715 | 8186 | if (sect == NULL) |
b34976b6 | 8187 | return FALSE; |
c044fabd | 8188 | |
4a6636fb PA |
8189 | /* sizeof (thread_info.thread_context) */ |
8190 | sect->size = 716; | |
8191 | /* offsetof (thread_info.thread_context) */ | |
8192 | sect->filepos = note->descpos + 12; | |
16e9c715 NC |
8193 | sect->alignment_power = 2; |
8194 | ||
4a6636fb PA |
8195 | /* thread_info.is_active_thread */ |
8196 | is_active_thread = bfd_get_32 (abfd, note->descdata + 8); | |
8197 | ||
8198 | if (is_active_thread) | |
16e9c715 | 8199 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) |
b34976b6 | 8200 | return FALSE; |
16e9c715 NC |
8201 | break; |
8202 | ||
4a6636fb | 8203 | case 3 /* NOTE_INFO_MODULE */: |
16e9c715 | 8204 | /* Make a ".module/xxxxxxxx" section. */ |
4a6636fb PA |
8205 | /* module_info.base_address */ |
8206 | base_addr = bfd_get_32 (abfd, note->descdata + 4); | |
0af1713e | 8207 | sprintf (buf, ".module/%08lx", (unsigned long) base_addr); |
c044fabd | 8208 | |
d4c88bbb | 8209 | len = strlen (buf) + 1; |
a50b1753 | 8210 | name = (char *) bfd_alloc (abfd, len); |
16e9c715 | 8211 | if (name == NULL) |
b34976b6 | 8212 | return FALSE; |
c044fabd | 8213 | |
d4c88bbb | 8214 | memcpy (name, buf, len); |
252b5132 | 8215 | |
117ed4f8 | 8216 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
c044fabd | 8217 | |
16e9c715 | 8218 | if (sect == NULL) |
b34976b6 | 8219 | return FALSE; |
c044fabd | 8220 | |
eea6121a | 8221 | sect->size = note->descsz; |
16e9c715 | 8222 | sect->filepos = note->descpos; |
16e9c715 NC |
8223 | sect->alignment_power = 2; |
8224 | break; | |
8225 | ||
8226 | default: | |
b34976b6 | 8227 | return TRUE; |
16e9c715 NC |
8228 | } |
8229 | ||
b34976b6 | 8230 | return TRUE; |
16e9c715 | 8231 | } |
252b5132 | 8232 | |
b34976b6 | 8233 | static bfd_boolean |
217aa764 | 8234 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 8235 | { |
9c5bfbb7 | 8236 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 8237 | |
252b5132 RH |
8238 | switch (note->type) |
8239 | { | |
8240 | default: | |
b34976b6 | 8241 | return TRUE; |
252b5132 | 8242 | |
252b5132 | 8243 | case NT_PRSTATUS: |
bb0082d6 AM |
8244 | if (bed->elf_backend_grok_prstatus) |
8245 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 8246 | return TRUE; |
bb0082d6 | 8247 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 8248 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 8249 | #else |
b34976b6 | 8250 | return TRUE; |
252b5132 RH |
8251 | #endif |
8252 | ||
8253 | #if defined (HAVE_PSTATUS_T) | |
8254 | case NT_PSTATUS: | |
8255 | return elfcore_grok_pstatus (abfd, note); | |
8256 | #endif | |
8257 | ||
8258 | #if defined (HAVE_LWPSTATUS_T) | |
8259 | case NT_LWPSTATUS: | |
8260 | return elfcore_grok_lwpstatus (abfd, note); | |
8261 | #endif | |
8262 | ||
8263 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
8264 | return elfcore_grok_prfpreg (abfd, note); | |
8265 | ||
c044fabd | 8266 | case NT_WIN32PSTATUS: |
16e9c715 | 8267 | return elfcore_grok_win32pstatus (abfd, note); |
16e9c715 | 8268 | |
c044fabd | 8269 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
8270 | if (note->namesz == 6 |
8271 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
8272 | return elfcore_grok_prxfpreg (abfd, note); |
8273 | else | |
b34976b6 | 8274 | return TRUE; |
ff08c6bb | 8275 | |
4339cae0 L |
8276 | case NT_X86_XSTATE: /* Linux XSAVE extension */ |
8277 | if (note->namesz == 6 | |
8278 | && strcmp (note->namedata, "LINUX") == 0) | |
8279 | return elfcore_grok_xstatereg (abfd, note); | |
8280 | else | |
8281 | return TRUE; | |
8282 | ||
97753bd5 AM |
8283 | case NT_PPC_VMX: |
8284 | if (note->namesz == 6 | |
8285 | && strcmp (note->namedata, "LINUX") == 0) | |
8286 | return elfcore_grok_ppc_vmx (abfd, note); | |
8287 | else | |
8288 | return TRUE; | |
8289 | ||
89eeb0bc LM |
8290 | case NT_PPC_VSX: |
8291 | if (note->namesz == 6 | |
8292 | && strcmp (note->namedata, "LINUX") == 0) | |
8293 | return elfcore_grok_ppc_vsx (abfd, note); | |
8294 | else | |
8295 | return TRUE; | |
8296 | ||
0675e188 UW |
8297 | case NT_S390_HIGH_GPRS: |
8298 | if (note->namesz == 6 | |
8299 | && strcmp (note->namedata, "LINUX") == 0) | |
8300 | return elfcore_grok_s390_high_gprs (abfd, note); | |
8301 | else | |
8302 | return TRUE; | |
8303 | ||
d7eeb400 MS |
8304 | case NT_S390_TIMER: |
8305 | if (note->namesz == 6 | |
8306 | && strcmp (note->namedata, "LINUX") == 0) | |
8307 | return elfcore_grok_s390_timer (abfd, note); | |
8308 | else | |
8309 | return TRUE; | |
8310 | ||
8311 | case NT_S390_TODCMP: | |
8312 | if (note->namesz == 6 | |
8313 | && strcmp (note->namedata, "LINUX") == 0) | |
8314 | return elfcore_grok_s390_todcmp (abfd, note); | |
8315 | else | |
8316 | return TRUE; | |
8317 | ||
8318 | case NT_S390_TODPREG: | |
8319 | if (note->namesz == 6 | |
8320 | && strcmp (note->namedata, "LINUX") == 0) | |
8321 | return elfcore_grok_s390_todpreg (abfd, note); | |
8322 | else | |
8323 | return TRUE; | |
8324 | ||
8325 | case NT_S390_CTRS: | |
8326 | if (note->namesz == 6 | |
8327 | && strcmp (note->namedata, "LINUX") == 0) | |
8328 | return elfcore_grok_s390_ctrs (abfd, note); | |
8329 | else | |
8330 | return TRUE; | |
8331 | ||
8332 | case NT_S390_PREFIX: | |
8333 | if (note->namesz == 6 | |
8334 | && strcmp (note->namedata, "LINUX") == 0) | |
8335 | return elfcore_grok_s390_prefix (abfd, note); | |
8336 | else | |
8337 | return TRUE; | |
8338 | ||
252b5132 RH |
8339 | case NT_PRPSINFO: |
8340 | case NT_PSINFO: | |
bb0082d6 AM |
8341 | if (bed->elf_backend_grok_psinfo) |
8342 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 8343 | return TRUE; |
bb0082d6 | 8344 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 8345 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 8346 | #else |
b34976b6 | 8347 | return TRUE; |
252b5132 | 8348 | #endif |
3333a7c3 RM |
8349 | |
8350 | case NT_AUXV: | |
8351 | { | |
117ed4f8 AM |
8352 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", |
8353 | SEC_HAS_CONTENTS); | |
3333a7c3 RM |
8354 | |
8355 | if (sect == NULL) | |
8356 | return FALSE; | |
eea6121a | 8357 | sect->size = note->descsz; |
3333a7c3 | 8358 | sect->filepos = note->descpos; |
3333a7c3 RM |
8359 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; |
8360 | ||
8361 | return TRUE; | |
8362 | } | |
252b5132 RH |
8363 | } |
8364 | } | |
8365 | ||
718175fa JK |
8366 | static bfd_boolean |
8367 | elfobj_grok_gnu_build_id (bfd *abfd, Elf_Internal_Note *note) | |
8368 | { | |
8369 | elf_tdata (abfd)->build_id_size = note->descsz; | |
a50b1753 | 8370 | elf_tdata (abfd)->build_id = (bfd_byte *) bfd_alloc (abfd, note->descsz); |
718175fa JK |
8371 | if (elf_tdata (abfd)->build_id == NULL) |
8372 | return FALSE; | |
8373 | ||
8374 | memcpy (elf_tdata (abfd)->build_id, note->descdata, note->descsz); | |
8375 | ||
8376 | return TRUE; | |
8377 | } | |
8378 | ||
8379 | static bfd_boolean | |
8380 | elfobj_grok_gnu_note (bfd *abfd, Elf_Internal_Note *note) | |
8381 | { | |
8382 | switch (note->type) | |
8383 | { | |
8384 | default: | |
8385 | return TRUE; | |
8386 | ||
8387 | case NT_GNU_BUILD_ID: | |
8388 | return elfobj_grok_gnu_build_id (abfd, note); | |
8389 | } | |
8390 | } | |
8391 | ||
b34976b6 | 8392 | static bfd_boolean |
217aa764 | 8393 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
8394 | { |
8395 | char *cp; | |
8396 | ||
8397 | cp = strchr (note->namedata, '@'); | |
8398 | if (cp != NULL) | |
8399 | { | |
d2b64500 | 8400 | *lwpidp = atoi(cp + 1); |
b34976b6 | 8401 | return TRUE; |
50b2bdb7 | 8402 | } |
b34976b6 | 8403 | return FALSE; |
50b2bdb7 AM |
8404 | } |
8405 | ||
b34976b6 | 8406 | static bfd_boolean |
217aa764 | 8407 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 | 8408 | { |
50b2bdb7 AM |
8409 | /* Signal number at offset 0x08. */ |
8410 | elf_tdata (abfd)->core_signal | |
8411 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
8412 | ||
8413 | /* Process ID at offset 0x50. */ | |
8414 | elf_tdata (abfd)->core_pid | |
8415 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
8416 | ||
8417 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
8418 | elf_tdata (abfd)->core_command | |
8419 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
8420 | ||
7720ba9f MK |
8421 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
8422 | note); | |
50b2bdb7 AM |
8423 | } |
8424 | ||
b34976b6 | 8425 | static bfd_boolean |
217aa764 | 8426 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
8427 | { |
8428 | int lwp; | |
8429 | ||
8430 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
8431 | elf_tdata (abfd)->core_lwpid = lwp; | |
8432 | ||
b4db1224 | 8433 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
8434 | { |
8435 | /* NetBSD-specific core "procinfo". Note that we expect to | |
08a40648 AM |
8436 | find this note before any of the others, which is fine, |
8437 | since the kernel writes this note out first when it | |
8438 | creates a core file. */ | |
47d9a591 | 8439 | |
50b2bdb7 AM |
8440 | return elfcore_grok_netbsd_procinfo (abfd, note); |
8441 | } | |
8442 | ||
b4db1224 JT |
8443 | /* As of Jan 2002 there are no other machine-independent notes |
8444 | defined for NetBSD core files. If the note type is less | |
8445 | than the start of the machine-dependent note types, we don't | |
8446 | understand it. */ | |
47d9a591 | 8447 | |
b4db1224 | 8448 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 8449 | return TRUE; |
50b2bdb7 AM |
8450 | |
8451 | ||
8452 | switch (bfd_get_arch (abfd)) | |
8453 | { | |
08a40648 AM |
8454 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and |
8455 | PT_GETFPREGS == mach+2. */ | |
50b2bdb7 AM |
8456 | |
8457 | case bfd_arch_alpha: | |
8458 | case bfd_arch_sparc: | |
8459 | switch (note->type) | |
08a40648 AM |
8460 | { |
8461 | case NT_NETBSDCORE_FIRSTMACH+0: | |
8462 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 8463 | |
08a40648 AM |
8464 | case NT_NETBSDCORE_FIRSTMACH+2: |
8465 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 8466 | |
08a40648 AM |
8467 | default: |
8468 | return TRUE; | |
8469 | } | |
50b2bdb7 | 8470 | |
08a40648 AM |
8471 | /* On all other arch's, PT_GETREGS == mach+1 and |
8472 | PT_GETFPREGS == mach+3. */ | |
50b2bdb7 AM |
8473 | |
8474 | default: | |
8475 | switch (note->type) | |
08a40648 AM |
8476 | { |
8477 | case NT_NETBSDCORE_FIRSTMACH+1: | |
8478 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 8479 | |
08a40648 AM |
8480 | case NT_NETBSDCORE_FIRSTMACH+3: |
8481 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 8482 | |
08a40648 AM |
8483 | default: |
8484 | return TRUE; | |
8485 | } | |
50b2bdb7 AM |
8486 | } |
8487 | /* NOTREACHED */ | |
8488 | } | |
8489 | ||
67cc5033 MK |
8490 | static bfd_boolean |
8491 | elfcore_grok_openbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) | |
8492 | { | |
8493 | /* Signal number at offset 0x08. */ | |
8494 | elf_tdata (abfd)->core_signal | |
8495 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
8496 | ||
8497 | /* Process ID at offset 0x20. */ | |
8498 | elf_tdata (abfd)->core_pid | |
8499 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x20); | |
8500 | ||
8501 | /* Command name at 0x48 (max 32 bytes, including nul). */ | |
8502 | elf_tdata (abfd)->core_command | |
8503 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x48, 31); | |
8504 | ||
8505 | return TRUE; | |
8506 | } | |
8507 | ||
8508 | static bfd_boolean | |
8509 | elfcore_grok_openbsd_note (bfd *abfd, Elf_Internal_Note *note) | |
8510 | { | |
8511 | if (note->type == NT_OPENBSD_PROCINFO) | |
8512 | return elfcore_grok_openbsd_procinfo (abfd, note); | |
8513 | ||
8514 | if (note->type == NT_OPENBSD_REGS) | |
8515 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
8516 | ||
8517 | if (note->type == NT_OPENBSD_FPREGS) | |
8518 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
8519 | ||
8520 | if (note->type == NT_OPENBSD_XFPREGS) | |
8521 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
8522 | ||
8523 | if (note->type == NT_OPENBSD_AUXV) | |
8524 | { | |
8525 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", | |
8526 | SEC_HAS_CONTENTS); | |
8527 | ||
8528 | if (sect == NULL) | |
8529 | return FALSE; | |
8530 | sect->size = note->descsz; | |
8531 | sect->filepos = note->descpos; | |
8532 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
8533 | ||
8534 | return TRUE; | |
8535 | } | |
8536 | ||
8537 | if (note->type == NT_OPENBSD_WCOOKIE) | |
8538 | { | |
8539 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".wcookie", | |
8540 | SEC_HAS_CONTENTS); | |
8541 | ||
8542 | if (sect == NULL) | |
8543 | return FALSE; | |
8544 | sect->size = note->descsz; | |
8545 | sect->filepos = note->descpos; | |
8546 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
8547 | ||
8548 | return TRUE; | |
8549 | } | |
8550 | ||
8551 | return TRUE; | |
8552 | } | |
8553 | ||
07c6e936 | 8554 | static bfd_boolean |
d3fd4074 | 8555 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid) |
07c6e936 NC |
8556 | { |
8557 | void *ddata = note->descdata; | |
8558 | char buf[100]; | |
8559 | char *name; | |
8560 | asection *sect; | |
f8843e87 AM |
8561 | short sig; |
8562 | unsigned flags; | |
07c6e936 NC |
8563 | |
8564 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
8565 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
8566 | ||
f8843e87 AM |
8567 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
8568 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
8569 | ||
8570 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
8571 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
8572 | |
8573 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
8574 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
8575 | { | |
8576 | elf_tdata (abfd)->core_signal = sig; | |
8577 | elf_tdata (abfd)->core_lwpid = *tid; | |
8578 | } | |
07c6e936 | 8579 | |
f8843e87 AM |
8580 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
8581 | do not come from signals so we make sure we set the current | |
8582 | thread just in case. */ | |
8583 | if (flags & 0x00000080) | |
8584 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
8585 | |
8586 | /* Make a ".qnx_core_status/%d" section. */ | |
d3fd4074 | 8587 | sprintf (buf, ".qnx_core_status/%ld", *tid); |
07c6e936 | 8588 | |
a50b1753 | 8589 | name = (char *) bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8590 | if (name == NULL) |
8591 | return FALSE; | |
8592 | strcpy (name, buf); | |
8593 | ||
117ed4f8 | 8594 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8595 | if (sect == NULL) |
8596 | return FALSE; | |
8597 | ||
eea6121a | 8598 | sect->size = note->descsz; |
07c6e936 | 8599 | sect->filepos = note->descpos; |
07c6e936 NC |
8600 | sect->alignment_power = 2; |
8601 | ||
8602 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
8603 | } | |
8604 | ||
8605 | static bfd_boolean | |
d69f560c KW |
8606 | elfcore_grok_nto_regs (bfd *abfd, |
8607 | Elf_Internal_Note *note, | |
d3fd4074 | 8608 | long tid, |
d69f560c | 8609 | char *base) |
07c6e936 NC |
8610 | { |
8611 | char buf[100]; | |
8612 | char *name; | |
8613 | asection *sect; | |
8614 | ||
d69f560c | 8615 | /* Make a "(base)/%d" section. */ |
d3fd4074 | 8616 | sprintf (buf, "%s/%ld", base, tid); |
07c6e936 | 8617 | |
a50b1753 | 8618 | name = (char *) bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8619 | if (name == NULL) |
8620 | return FALSE; | |
8621 | strcpy (name, buf); | |
8622 | ||
117ed4f8 | 8623 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8624 | if (sect == NULL) |
8625 | return FALSE; | |
8626 | ||
eea6121a | 8627 | sect->size = note->descsz; |
07c6e936 | 8628 | sect->filepos = note->descpos; |
07c6e936 NC |
8629 | sect->alignment_power = 2; |
8630 | ||
f8843e87 AM |
8631 | /* This is the current thread. */ |
8632 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 8633 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
8634 | |
8635 | return TRUE; | |
07c6e936 NC |
8636 | } |
8637 | ||
8638 | #define BFD_QNT_CORE_INFO 7 | |
8639 | #define BFD_QNT_CORE_STATUS 8 | |
8640 | #define BFD_QNT_CORE_GREG 9 | |
8641 | #define BFD_QNT_CORE_FPREG 10 | |
8642 | ||
8643 | static bfd_boolean | |
217aa764 | 8644 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
8645 | { |
8646 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 8647 | tid from the previous call to pass down to the next gregs |
07c6e936 | 8648 | function. */ |
d3fd4074 | 8649 | static long tid = 1; |
07c6e936 NC |
8650 | |
8651 | switch (note->type) | |
8652 | { | |
d69f560c KW |
8653 | case BFD_QNT_CORE_INFO: |
8654 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
8655 | case BFD_QNT_CORE_STATUS: | |
8656 | return elfcore_grok_nto_status (abfd, note, &tid); | |
8657 | case BFD_QNT_CORE_GREG: | |
8658 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
8659 | case BFD_QNT_CORE_FPREG: | |
8660 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
8661 | default: | |
8662 | return TRUE; | |
07c6e936 NC |
8663 | } |
8664 | } | |
8665 | ||
b15fa79e AM |
8666 | static bfd_boolean |
8667 | elfcore_grok_spu_note (bfd *abfd, Elf_Internal_Note *note) | |
8668 | { | |
8669 | char *name; | |
8670 | asection *sect; | |
8671 | size_t len; | |
8672 | ||
8673 | /* Use note name as section name. */ | |
8674 | len = note->namesz; | |
a50b1753 | 8675 | name = (char *) bfd_alloc (abfd, len); |
b15fa79e AM |
8676 | if (name == NULL) |
8677 | return FALSE; | |
8678 | memcpy (name, note->namedata, len); | |
8679 | name[len - 1] = '\0'; | |
8680 | ||
8681 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); | |
8682 | if (sect == NULL) | |
8683 | return FALSE; | |
8684 | ||
8685 | sect->size = note->descsz; | |
8686 | sect->filepos = note->descpos; | |
8687 | sect->alignment_power = 1; | |
8688 | ||
8689 | return TRUE; | |
8690 | } | |
8691 | ||
7c76fa91 MS |
8692 | /* Function: elfcore_write_note |
8693 | ||
47d9a591 | 8694 | Inputs: |
a39f3346 | 8695 | buffer to hold note, and current size of buffer |
7c76fa91 MS |
8696 | name of note |
8697 | type of note | |
8698 | data for note | |
8699 | size of data for note | |
8700 | ||
a39f3346 AM |
8701 | Writes note to end of buffer. ELF64 notes are written exactly as |
8702 | for ELF32, despite the current (as of 2006) ELF gabi specifying | |
8703 | that they ought to have 8-byte namesz and descsz field, and have | |
8704 | 8-byte alignment. Other writers, eg. Linux kernel, do the same. | |
8705 | ||
7c76fa91 | 8706 | Return: |
a39f3346 | 8707 | Pointer to realloc'd buffer, *BUFSIZ updated. */ |
7c76fa91 MS |
8708 | |
8709 | char * | |
a39f3346 | 8710 | elfcore_write_note (bfd *abfd, |
217aa764 | 8711 | char *buf, |
a39f3346 | 8712 | int *bufsiz, |
217aa764 | 8713 | const char *name, |
a39f3346 | 8714 | int type, |
217aa764 | 8715 | const void *input, |
a39f3346 | 8716 | int size) |
7c76fa91 MS |
8717 | { |
8718 | Elf_External_Note *xnp; | |
d4c88bbb | 8719 | size_t namesz; |
d4c88bbb | 8720 | size_t newspace; |
a39f3346 | 8721 | char *dest; |
7c76fa91 | 8722 | |
d4c88bbb | 8723 | namesz = 0; |
d4c88bbb | 8724 | if (name != NULL) |
a39f3346 | 8725 | namesz = strlen (name) + 1; |
d4c88bbb | 8726 | |
a39f3346 | 8727 | newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4); |
d4c88bbb | 8728 | |
a50b1753 | 8729 | buf = (char *) realloc (buf, *bufsiz + newspace); |
14b1c01e AM |
8730 | if (buf == NULL) |
8731 | return buf; | |
a39f3346 | 8732 | dest = buf + *bufsiz; |
7c76fa91 MS |
8733 | *bufsiz += newspace; |
8734 | xnp = (Elf_External_Note *) dest; | |
8735 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
8736 | H_PUT_32 (abfd, size, xnp->descsz); | |
8737 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
8738 | dest = xnp->name; |
8739 | if (name != NULL) | |
8740 | { | |
8741 | memcpy (dest, name, namesz); | |
8742 | dest += namesz; | |
a39f3346 | 8743 | while (namesz & 3) |
d4c88bbb AM |
8744 | { |
8745 | *dest++ = '\0'; | |
a39f3346 | 8746 | ++namesz; |
d4c88bbb AM |
8747 | } |
8748 | } | |
8749 | memcpy (dest, input, size); | |
a39f3346 AM |
8750 | dest += size; |
8751 | while (size & 3) | |
8752 | { | |
8753 | *dest++ = '\0'; | |
8754 | ++size; | |
8755 | } | |
8756 | return buf; | |
7c76fa91 MS |
8757 | } |
8758 | ||
8759 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
8760 | char * | |
217aa764 AM |
8761 | elfcore_write_prpsinfo (bfd *abfd, |
8762 | char *buf, | |
8763 | int *bufsiz, | |
8764 | const char *fname, | |
8765 | const char *psargs) | |
7c76fa91 | 8766 | { |
183e98be AM |
8767 | const char *note_name = "CORE"; |
8768 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8769 | ||
8770 | if (bed->elf_backend_write_core_note != NULL) | |
8771 | { | |
8772 | char *ret; | |
8773 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8774 | NT_PRPSINFO, fname, psargs); | |
8775 | if (ret != NULL) | |
8776 | return ret; | |
8777 | } | |
7c76fa91 | 8778 | |
183e98be AM |
8779 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
8780 | if (bed->s->elfclass == ELFCLASS32) | |
8781 | { | |
8782 | #if defined (HAVE_PSINFO32_T) | |
8783 | psinfo32_t data; | |
8784 | int note_type = NT_PSINFO; | |
8785 | #else | |
8786 | prpsinfo32_t data; | |
8787 | int note_type = NT_PRPSINFO; | |
8788 | #endif | |
8789 | ||
8790 | memset (&data, 0, sizeof (data)); | |
8791 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8792 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8793 | return elfcore_write_note (abfd, buf, bufsiz, | |
8794 | note_name, note_type, &data, sizeof (data)); | |
8795 | } | |
8796 | else | |
8797 | #endif | |
8798 | { | |
7c76fa91 | 8799 | #if defined (HAVE_PSINFO_T) |
183e98be AM |
8800 | psinfo_t data; |
8801 | int note_type = NT_PSINFO; | |
7c76fa91 | 8802 | #else |
183e98be AM |
8803 | prpsinfo_t data; |
8804 | int note_type = NT_PRPSINFO; | |
7c76fa91 MS |
8805 | #endif |
8806 | ||
183e98be AM |
8807 | memset (&data, 0, sizeof (data)); |
8808 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8809 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8810 | return elfcore_write_note (abfd, buf, bufsiz, | |
8811 | note_name, note_type, &data, sizeof (data)); | |
8812 | } | |
7c76fa91 MS |
8813 | } |
8814 | #endif /* PSINFO_T or PRPSINFO_T */ | |
8815 | ||
8816 | #if defined (HAVE_PRSTATUS_T) | |
8817 | char * | |
217aa764 AM |
8818 | elfcore_write_prstatus (bfd *abfd, |
8819 | char *buf, | |
8820 | int *bufsiz, | |
8821 | long pid, | |
8822 | int cursig, | |
8823 | const void *gregs) | |
7c76fa91 | 8824 | { |
183e98be AM |
8825 | const char *note_name = "CORE"; |
8826 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8827 | |
183e98be AM |
8828 | if (bed->elf_backend_write_core_note != NULL) |
8829 | { | |
8830 | char *ret; | |
8831 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8832 | NT_PRSTATUS, | |
8833 | pid, cursig, gregs); | |
8834 | if (ret != NULL) | |
8835 | return ret; | |
8836 | } | |
8837 | ||
8838 | #if defined (HAVE_PRSTATUS32_T) | |
8839 | if (bed->s->elfclass == ELFCLASS32) | |
8840 | { | |
8841 | prstatus32_t prstat; | |
8842 | ||
8843 | memset (&prstat, 0, sizeof (prstat)); | |
8844 | prstat.pr_pid = pid; | |
8845 | prstat.pr_cursig = cursig; | |
8846 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8847 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8848 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8849 | } | |
8850 | else | |
8851 | #endif | |
8852 | { | |
8853 | prstatus_t prstat; | |
8854 | ||
8855 | memset (&prstat, 0, sizeof (prstat)); | |
8856 | prstat.pr_pid = pid; | |
8857 | prstat.pr_cursig = cursig; | |
8858 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8859 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8860 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8861 | } | |
7c76fa91 MS |
8862 | } |
8863 | #endif /* HAVE_PRSTATUS_T */ | |
8864 | ||
51316059 MS |
8865 | #if defined (HAVE_LWPSTATUS_T) |
8866 | char * | |
217aa764 AM |
8867 | elfcore_write_lwpstatus (bfd *abfd, |
8868 | char *buf, | |
8869 | int *bufsiz, | |
8870 | long pid, | |
8871 | int cursig, | |
8872 | const void *gregs) | |
51316059 MS |
8873 | { |
8874 | lwpstatus_t lwpstat; | |
183e98be | 8875 | const char *note_name = "CORE"; |
51316059 MS |
8876 | |
8877 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
8878 | lwpstat.pr_lwpid = pid >> 16; | |
8879 | lwpstat.pr_cursig = cursig; | |
8880 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
8881 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
8882 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
8883 | #if !defined(gregs) | |
8884 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
8885 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
8886 | #else | |
8887 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
8888 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
8889 | #endif | |
8890 | #endif | |
47d9a591 | 8891 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8892 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
8893 | } | |
8894 | #endif /* HAVE_LWPSTATUS_T */ | |
8895 | ||
7c76fa91 MS |
8896 | #if defined (HAVE_PSTATUS_T) |
8897 | char * | |
217aa764 AM |
8898 | elfcore_write_pstatus (bfd *abfd, |
8899 | char *buf, | |
8900 | int *bufsiz, | |
8901 | long pid, | |
6c10990d NC |
8902 | int cursig ATTRIBUTE_UNUSED, |
8903 | const void *gregs ATTRIBUTE_UNUSED) | |
7c76fa91 | 8904 | { |
183e98be AM |
8905 | const char *note_name = "CORE"; |
8906 | #if defined (HAVE_PSTATUS32_T) | |
8907 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8908 | |
183e98be AM |
8909 | if (bed->s->elfclass == ELFCLASS32) |
8910 | { | |
8911 | pstatus32_t pstat; | |
8912 | ||
8913 | memset (&pstat, 0, sizeof (pstat)); | |
8914 | pstat.pr_pid = pid & 0xffff; | |
8915 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8916 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8917 | return buf; | |
8918 | } | |
8919 | else | |
8920 | #endif | |
8921 | { | |
8922 | pstatus_t pstat; | |
8923 | ||
8924 | memset (&pstat, 0, sizeof (pstat)); | |
8925 | pstat.pr_pid = pid & 0xffff; | |
8926 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8927 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8928 | return buf; | |
8929 | } | |
7c76fa91 MS |
8930 | } |
8931 | #endif /* HAVE_PSTATUS_T */ | |
8932 | ||
8933 | char * | |
217aa764 AM |
8934 | elfcore_write_prfpreg (bfd *abfd, |
8935 | char *buf, | |
8936 | int *bufsiz, | |
8937 | const void *fpregs, | |
8938 | int size) | |
7c76fa91 | 8939 | { |
183e98be | 8940 | const char *note_name = "CORE"; |
47d9a591 | 8941 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8942 | note_name, NT_FPREGSET, fpregs, size); |
8943 | } | |
8944 | ||
8945 | char * | |
217aa764 AM |
8946 | elfcore_write_prxfpreg (bfd *abfd, |
8947 | char *buf, | |
8948 | int *bufsiz, | |
8949 | const void *xfpregs, | |
8950 | int size) | |
7c76fa91 MS |
8951 | { |
8952 | char *note_name = "LINUX"; | |
47d9a591 | 8953 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8954 | note_name, NT_PRXFPREG, xfpregs, size); |
8955 | } | |
8956 | ||
4339cae0 L |
8957 | char * |
8958 | elfcore_write_xstatereg (bfd *abfd, char *buf, int *bufsiz, | |
8959 | const void *xfpregs, int size) | |
8960 | { | |
8961 | char *note_name = "LINUX"; | |
8962 | return elfcore_write_note (abfd, buf, bufsiz, | |
8963 | note_name, NT_X86_XSTATE, xfpregs, size); | |
8964 | } | |
8965 | ||
97753bd5 AM |
8966 | char * |
8967 | elfcore_write_ppc_vmx (bfd *abfd, | |
8968 | char *buf, | |
8969 | int *bufsiz, | |
8970 | const void *ppc_vmx, | |
8971 | int size) | |
8972 | { | |
8973 | char *note_name = "LINUX"; | |
8974 | return elfcore_write_note (abfd, buf, bufsiz, | |
8975 | note_name, NT_PPC_VMX, ppc_vmx, size); | |
8976 | } | |
8977 | ||
89eeb0bc LM |
8978 | char * |
8979 | elfcore_write_ppc_vsx (bfd *abfd, | |
8980 | char *buf, | |
8981 | int *bufsiz, | |
8982 | const void *ppc_vsx, | |
8983 | int size) | |
8984 | { | |
8985 | char *note_name = "LINUX"; | |
8986 | return elfcore_write_note (abfd, buf, bufsiz, | |
8987 | note_name, NT_PPC_VSX, ppc_vsx, size); | |
8988 | } | |
8989 | ||
0675e188 UW |
8990 | static char * |
8991 | elfcore_write_s390_high_gprs (bfd *abfd, | |
8992 | char *buf, | |
8993 | int *bufsiz, | |
8994 | const void *s390_high_gprs, | |
8995 | int size) | |
8996 | { | |
8997 | char *note_name = "LINUX"; | |
8998 | return elfcore_write_note (abfd, buf, bufsiz, | |
8999 | note_name, NT_S390_HIGH_GPRS, | |
9000 | s390_high_gprs, size); | |
9001 | } | |
9002 | ||
d7eeb400 MS |
9003 | char * |
9004 | elfcore_write_s390_timer (bfd *abfd, | |
9005 | char *buf, | |
9006 | int *bufsiz, | |
9007 | const void *s390_timer, | |
9008 | int size) | |
9009 | { | |
9010 | char *note_name = "LINUX"; | |
9011 | return elfcore_write_note (abfd, buf, bufsiz, | |
9012 | note_name, NT_S390_TIMER, s390_timer, size); | |
9013 | } | |
9014 | ||
9015 | char * | |
9016 | elfcore_write_s390_todcmp (bfd *abfd, | |
9017 | char *buf, | |
9018 | int *bufsiz, | |
9019 | const void *s390_todcmp, | |
9020 | int size) | |
9021 | { | |
9022 | char *note_name = "LINUX"; | |
9023 | return elfcore_write_note (abfd, buf, bufsiz, | |
9024 | note_name, NT_S390_TODCMP, s390_todcmp, size); | |
9025 | } | |
9026 | ||
9027 | char * | |
9028 | elfcore_write_s390_todpreg (bfd *abfd, | |
9029 | char *buf, | |
9030 | int *bufsiz, | |
9031 | const void *s390_todpreg, | |
9032 | int size) | |
9033 | { | |
9034 | char *note_name = "LINUX"; | |
9035 | return elfcore_write_note (abfd, buf, bufsiz, | |
9036 | note_name, NT_S390_TODPREG, s390_todpreg, size); | |
9037 | } | |
9038 | ||
9039 | char * | |
9040 | elfcore_write_s390_ctrs (bfd *abfd, | |
9041 | char *buf, | |
9042 | int *bufsiz, | |
9043 | const void *s390_ctrs, | |
9044 | int size) | |
9045 | { | |
9046 | char *note_name = "LINUX"; | |
9047 | return elfcore_write_note (abfd, buf, bufsiz, | |
9048 | note_name, NT_S390_CTRS, s390_ctrs, size); | |
9049 | } | |
9050 | ||
9051 | char * | |
9052 | elfcore_write_s390_prefix (bfd *abfd, | |
9053 | char *buf, | |
9054 | int *bufsiz, | |
9055 | const void *s390_prefix, | |
9056 | int size) | |
9057 | { | |
9058 | char *note_name = "LINUX"; | |
9059 | return elfcore_write_note (abfd, buf, bufsiz, | |
9060 | note_name, NT_S390_PREFIX, s390_prefix, size); | |
9061 | } | |
9062 | ||
bb864ac1 CES |
9063 | char * |
9064 | elfcore_write_register_note (bfd *abfd, | |
9065 | char *buf, | |
9066 | int *bufsiz, | |
9067 | const char *section, | |
9068 | const void *data, | |
9069 | int size) | |
9070 | { | |
9071 | if (strcmp (section, ".reg2") == 0) | |
9072 | return elfcore_write_prfpreg (abfd, buf, bufsiz, data, size); | |
9073 | if (strcmp (section, ".reg-xfp") == 0) | |
9074 | return elfcore_write_prxfpreg (abfd, buf, bufsiz, data, size); | |
4339cae0 L |
9075 | if (strcmp (section, ".reg-xstate") == 0) |
9076 | return elfcore_write_xstatereg (abfd, buf, bufsiz, data, size); | |
bb864ac1 CES |
9077 | if (strcmp (section, ".reg-ppc-vmx") == 0) |
9078 | return elfcore_write_ppc_vmx (abfd, buf, bufsiz, data, size); | |
89eeb0bc LM |
9079 | if (strcmp (section, ".reg-ppc-vsx") == 0) |
9080 | return elfcore_write_ppc_vsx (abfd, buf, bufsiz, data, size); | |
0675e188 UW |
9081 | if (strcmp (section, ".reg-s390-high-gprs") == 0) |
9082 | return elfcore_write_s390_high_gprs (abfd, buf, bufsiz, data, size); | |
d7eeb400 MS |
9083 | if (strcmp (section, ".reg-s390-timer") == 0) |
9084 | return elfcore_write_s390_timer (abfd, buf, bufsiz, data, size); | |
9085 | if (strcmp (section, ".reg-s390-todcmp") == 0) | |
9086 | return elfcore_write_s390_todcmp (abfd, buf, bufsiz, data, size); | |
9087 | if (strcmp (section, ".reg-s390-todpreg") == 0) | |
9088 | return elfcore_write_s390_todpreg (abfd, buf, bufsiz, data, size); | |
9089 | if (strcmp (section, ".reg-s390-ctrs") == 0) | |
9090 | return elfcore_write_s390_ctrs (abfd, buf, bufsiz, data, size); | |
9091 | if (strcmp (section, ".reg-s390-prefix") == 0) | |
9092 | return elfcore_write_s390_prefix (abfd, buf, bufsiz, data, size); | |
bb864ac1 CES |
9093 | return NULL; |
9094 | } | |
9095 | ||
b34976b6 | 9096 | static bfd_boolean |
718175fa | 9097 | elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset) |
252b5132 | 9098 | { |
c044fabd | 9099 | char *p; |
252b5132 | 9100 | |
252b5132 RH |
9101 | p = buf; |
9102 | while (p < buf + size) | |
9103 | { | |
c044fabd KH |
9104 | /* FIXME: bad alignment assumption. */ |
9105 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
9106 | Elf_Internal_Note in; |
9107 | ||
baea7ef1 AM |
9108 | if (offsetof (Elf_External_Note, name) > buf - p + size) |
9109 | return FALSE; | |
9110 | ||
dc810e39 | 9111 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 9112 | |
dc810e39 | 9113 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 | 9114 | in.namedata = xnp->name; |
baea7ef1 AM |
9115 | if (in.namesz > buf - in.namedata + size) |
9116 | return FALSE; | |
252b5132 | 9117 | |
dc810e39 | 9118 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
9119 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
9120 | in.descpos = offset + (in.descdata - buf); | |
baea7ef1 AM |
9121 | if (in.descsz != 0 |
9122 | && (in.descdata >= buf + size | |
9123 | || in.descsz > buf - in.descdata + size)) | |
9124 | return FALSE; | |
252b5132 | 9125 | |
718175fa JK |
9126 | switch (bfd_get_format (abfd)) |
9127 | { | |
9128 | default: | |
9129 | return TRUE; | |
9130 | ||
9131 | case bfd_core: | |
9132 | if (CONST_STRNEQ (in.namedata, "NetBSD-CORE")) | |
9133 | { | |
9134 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
9135 | return FALSE; | |
9136 | } | |
67cc5033 MK |
9137 | else if (CONST_STRNEQ (in.namedata, "OpenBSD")) |
9138 | { | |
9139 | if (! elfcore_grok_openbsd_note (abfd, &in)) | |
9140 | return FALSE; | |
9141 | } | |
718175fa JK |
9142 | else if (CONST_STRNEQ (in.namedata, "QNX")) |
9143 | { | |
9144 | if (! elfcore_grok_nto_note (abfd, &in)) | |
9145 | return FALSE; | |
9146 | } | |
b15fa79e AM |
9147 | else if (CONST_STRNEQ (in.namedata, "SPU/")) |
9148 | { | |
9149 | if (! elfcore_grok_spu_note (abfd, &in)) | |
9150 | return FALSE; | |
9151 | } | |
718175fa JK |
9152 | else |
9153 | { | |
9154 | if (! elfcore_grok_note (abfd, &in)) | |
9155 | return FALSE; | |
9156 | } | |
9157 | break; | |
9158 | ||
9159 | case bfd_object: | |
9160 | if (in.namesz == sizeof "GNU" && strcmp (in.namedata, "GNU") == 0) | |
9161 | { | |
9162 | if (! elfobj_grok_gnu_note (abfd, &in)) | |
9163 | return FALSE; | |
9164 | } | |
9165 | break; | |
08a40648 | 9166 | } |
252b5132 RH |
9167 | |
9168 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
9169 | } | |
9170 | ||
718175fa JK |
9171 | return TRUE; |
9172 | } | |
9173 | ||
9174 | static bfd_boolean | |
9175 | elf_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) | |
9176 | { | |
9177 | char *buf; | |
9178 | ||
9179 | if (size <= 0) | |
9180 | return TRUE; | |
9181 | ||
9182 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) | |
9183 | return FALSE; | |
9184 | ||
a50b1753 | 9185 | buf = (char *) bfd_malloc (size); |
718175fa JK |
9186 | if (buf == NULL) |
9187 | return FALSE; | |
9188 | ||
9189 | if (bfd_bread (buf, size, abfd) != size | |
9190 | || !elf_parse_notes (abfd, buf, size, offset)) | |
9191 | { | |
9192 | free (buf); | |
9193 | return FALSE; | |
9194 | } | |
9195 | ||
252b5132 | 9196 | free (buf); |
b34976b6 | 9197 | return TRUE; |
252b5132 | 9198 | } |
98d8431c JB |
9199 | \f |
9200 | /* Providing external access to the ELF program header table. */ | |
9201 | ||
9202 | /* Return an upper bound on the number of bytes required to store a | |
9203 | copy of ABFD's program header table entries. Return -1 if an error | |
9204 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 9205 | |
98d8431c | 9206 | long |
217aa764 | 9207 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
9208 | { |
9209 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
9210 | { | |
9211 | bfd_set_error (bfd_error_wrong_format); | |
9212 | return -1; | |
9213 | } | |
9214 | ||
936e320b | 9215 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
9216 | } |
9217 | ||
98d8431c JB |
9218 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
9219 | will be stored as an array of Elf_Internal_Phdr structures, as | |
9220 | defined in include/elf/internal.h. To find out how large the | |
9221 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
9222 | ||
9223 | Return the number of program header table entries read, or -1 if an | |
9224 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 9225 | |
98d8431c | 9226 | int |
217aa764 | 9227 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
9228 | { |
9229 | int num_phdrs; | |
9230 | ||
9231 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
9232 | { | |
9233 | bfd_set_error (bfd_error_wrong_format); | |
9234 | return -1; | |
9235 | } | |
9236 | ||
9237 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 9238 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
9239 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
9240 | ||
9241 | return num_phdrs; | |
9242 | } | |
ae4221d7 | 9243 | |
db6751f2 | 9244 | enum elf_reloc_type_class |
217aa764 | 9245 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
9246 | { |
9247 | return reloc_class_normal; | |
9248 | } | |
f8df10f4 | 9249 | |
47d9a591 | 9250 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
9251 | relocation against a local symbol. */ |
9252 | ||
9253 | bfd_vma | |
217aa764 AM |
9254 | _bfd_elf_rela_local_sym (bfd *abfd, |
9255 | Elf_Internal_Sym *sym, | |
8517fae7 | 9256 | asection **psec, |
217aa764 | 9257 | Elf_Internal_Rela *rel) |
f8df10f4 | 9258 | { |
8517fae7 | 9259 | asection *sec = *psec; |
f8df10f4 JJ |
9260 | bfd_vma relocation; |
9261 | ||
9262 | relocation = (sec->output_section->vma | |
9263 | + sec->output_offset | |
9264 | + sym->st_value); | |
9265 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 9266 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 9267 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 9268 | { |
f8df10f4 | 9269 | rel->r_addend = |
8517fae7 | 9270 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 9271 | elf_section_data (sec)->sec_info, |
753731ee AM |
9272 | sym->st_value + rel->r_addend); |
9273 | if (sec != *psec) | |
9274 | { | |
9275 | /* If we have changed the section, and our original section is | |
9276 | marked with SEC_EXCLUDE, it means that the original | |
9277 | SEC_MERGE section has been completely subsumed in some | |
9278 | other SEC_MERGE section. In this case, we need to leave | |
9279 | some info around for --emit-relocs. */ | |
9280 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
9281 | sec->kept_section = *psec; | |
9282 | sec = *psec; | |
9283 | } | |
8517fae7 AM |
9284 | rel->r_addend -= relocation; |
9285 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
9286 | } |
9287 | return relocation; | |
9288 | } | |
c629eae0 JJ |
9289 | |
9290 | bfd_vma | |
217aa764 AM |
9291 | _bfd_elf_rel_local_sym (bfd *abfd, |
9292 | Elf_Internal_Sym *sym, | |
9293 | asection **psec, | |
9294 | bfd_vma addend) | |
47d9a591 | 9295 | { |
c629eae0 JJ |
9296 | asection *sec = *psec; |
9297 | ||
68bfbfcc | 9298 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
9299 | return sym->st_value + addend; |
9300 | ||
9301 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 9302 | elf_section_data (sec)->sec_info, |
753731ee | 9303 | sym->st_value + addend); |
c629eae0 JJ |
9304 | } |
9305 | ||
9306 | bfd_vma | |
217aa764 | 9307 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 9308 | struct bfd_link_info *info, |
217aa764 AM |
9309 | asection *sec, |
9310 | bfd_vma offset) | |
c629eae0 | 9311 | { |
68bfbfcc | 9312 | switch (sec->sec_info_type) |
65765700 JJ |
9313 | { |
9314 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
9315 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
9316 | offset); | |
65765700 | 9317 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 9318 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
9319 | default: |
9320 | return offset; | |
9321 | } | |
c629eae0 | 9322 | } |
3333a7c3 RM |
9323 | \f |
9324 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
9325 | reconstruct an ELF file by reading the segments out of remote memory | |
9326 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
9327 | points to. If not null, *LOADBASEP is filled in with the difference | |
9328 | between the VMAs from which the segments were read, and the VMAs the | |
9329 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
9330 | ||
9331 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
9332 | remote memory at target address VMA into the local buffer at MYADDR; it | |
9333 | should return zero on success or an `errno' code on failure. TEMPL must | |
9334 | be a BFD for an ELF target with the word size and byte order found in | |
9335 | the remote memory. */ | |
9336 | ||
9337 | bfd * | |
217aa764 AM |
9338 | bfd_elf_bfd_from_remote_memory |
9339 | (bfd *templ, | |
9340 | bfd_vma ehdr_vma, | |
9341 | bfd_vma *loadbasep, | |
f075ee0c | 9342 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
9343 | { |
9344 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
9345 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
9346 | } | |
4c45e5c9 JJ |
9347 | \f |
9348 | long | |
c9727e01 AM |
9349 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
9350 | long symcount ATTRIBUTE_UNUSED, | |
9351 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 9352 | long dynsymcount, |
c9727e01 AM |
9353 | asymbol **dynsyms, |
9354 | asymbol **ret) | |
4c45e5c9 JJ |
9355 | { |
9356 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
9357 | asection *relplt; | |
9358 | asymbol *s; | |
9359 | const char *relplt_name; | |
9360 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
9361 | arelent *p; | |
9362 | long count, i, n; | |
9363 | size_t size; | |
9364 | Elf_Internal_Shdr *hdr; | |
9365 | char *names; | |
9366 | asection *plt; | |
9367 | ||
8615f3f2 AM |
9368 | *ret = NULL; |
9369 | ||
90e3cdf2 JJ |
9370 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
9371 | return 0; | |
9372 | ||
8615f3f2 AM |
9373 | if (dynsymcount <= 0) |
9374 | return 0; | |
9375 | ||
4c45e5c9 JJ |
9376 | if (!bed->plt_sym_val) |
9377 | return 0; | |
9378 | ||
9379 | relplt_name = bed->relplt_name; | |
9380 | if (relplt_name == NULL) | |
d35fd659 | 9381 | relplt_name = bed->rela_plts_and_copies_p ? ".rela.plt" : ".rel.plt"; |
4c45e5c9 JJ |
9382 | relplt = bfd_get_section_by_name (abfd, relplt_name); |
9383 | if (relplt == NULL) | |
9384 | return 0; | |
9385 | ||
9386 | hdr = &elf_section_data (relplt)->this_hdr; | |
9387 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
9388 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
9389 | return 0; | |
9390 | ||
9391 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
9392 | if (plt == NULL) | |
9393 | return 0; | |
9394 | ||
9395 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 9396 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
9397 | return -1; |
9398 | ||
eea6121a | 9399 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
9400 | size = count * sizeof (asymbol); |
9401 | p = relplt->relocation; | |
cb53bf42 | 9402 | for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel) |
041de40d AM |
9403 | { |
9404 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
9405 | if (p->addend != 0) | |
9406 | { | |
9407 | #ifdef BFD64 | |
9408 | size += sizeof ("+0x") - 1 + 8 + 8 * (bed->s->elfclass == ELFCLASS64); | |
9409 | #else | |
9410 | size += sizeof ("+0x") - 1 + 8; | |
9411 | #endif | |
9412 | } | |
9413 | } | |
4c45e5c9 | 9414 | |
a50b1753 | 9415 | s = *ret = (asymbol *) bfd_malloc (size); |
4c45e5c9 JJ |
9416 | if (s == NULL) |
9417 | return -1; | |
9418 | ||
9419 | names = (char *) (s + count); | |
9420 | p = relplt->relocation; | |
9421 | n = 0; | |
cb53bf42 | 9422 | for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel) |
4c45e5c9 JJ |
9423 | { |
9424 | size_t len; | |
9425 | bfd_vma addr; | |
9426 | ||
9427 | addr = bed->plt_sym_val (i, plt, p); | |
9428 | if (addr == (bfd_vma) -1) | |
9429 | continue; | |
9430 | ||
9431 | *s = **p->sym_ptr_ptr; | |
65a7a66f AM |
9432 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since |
9433 | we are defining a symbol, ensure one of them is set. */ | |
9434 | if ((s->flags & BSF_LOCAL) == 0) | |
9435 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 9436 | s->flags |= BSF_SYNTHETIC; |
4c45e5c9 JJ |
9437 | s->section = plt; |
9438 | s->value = addr - plt->vma; | |
9439 | s->name = names; | |
8f39ba8e | 9440 | s->udata.p = NULL; |
4c45e5c9 JJ |
9441 | len = strlen ((*p->sym_ptr_ptr)->name); |
9442 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
9443 | names += len; | |
041de40d AM |
9444 | if (p->addend != 0) |
9445 | { | |
1d770845 | 9446 | char buf[30], *a; |
91d6fa6a | 9447 | |
041de40d AM |
9448 | memcpy (names, "+0x", sizeof ("+0x") - 1); |
9449 | names += sizeof ("+0x") - 1; | |
1d770845 L |
9450 | bfd_sprintf_vma (abfd, buf, p->addend); |
9451 | for (a = buf; *a == '0'; ++a) | |
9452 | ; | |
9453 | len = strlen (a); | |
9454 | memcpy (names, a, len); | |
9455 | names += len; | |
041de40d | 9456 | } |
4c45e5c9 JJ |
9457 | memcpy (names, "@plt", sizeof ("@plt")); |
9458 | names += sizeof ("@plt"); | |
8f39ba8e | 9459 | ++s, ++n; |
4c45e5c9 JJ |
9460 | } |
9461 | ||
9462 | return n; | |
9463 | } | |
3d7f7666 | 9464 | |
3b22753a L |
9465 | /* It is only used by x86-64 so far. */ |
9466 | asection _bfd_elf_large_com_section | |
9467 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, | |
f592407e | 9468 | SEC_IS_COMMON, NULL, "LARGE_COMMON", 0); |
ecca9871 | 9469 | |
d1036acb L |
9470 | void |
9471 | _bfd_elf_set_osabi (bfd * abfd, | |
9472 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
9473 | { | |
9474 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
9475 | ||
9476 | i_ehdrp = elf_elfheader (abfd); | |
9477 | ||
9478 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
d8045f23 NC |
9479 | |
9480 | /* To make things simpler for the loader on Linux systems we set the | |
9481 | osabi field to ELFOSABI_LINUX if the binary contains symbols of | |
9482 | the STT_GNU_IFUNC type. */ | |
9483 | if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE | |
9484 | && elf_tdata (abfd)->has_ifunc_symbols) | |
9485 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX; | |
d1036acb | 9486 | } |
fcb93ecf PB |
9487 | |
9488 | ||
9489 | /* Return TRUE for ELF symbol types that represent functions. | |
9490 | This is the default version of this function, which is sufficient for | |
d8045f23 | 9491 | most targets. It returns true if TYPE is STT_FUNC or STT_GNU_IFUNC. */ |
fcb93ecf PB |
9492 | |
9493 | bfd_boolean | |
9494 | _bfd_elf_is_function_type (unsigned int type) | |
9495 | { | |
d8045f23 NC |
9496 | return (type == STT_FUNC |
9497 | || type == STT_GNU_IFUNC); | |
fcb93ecf | 9498 | } |