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 | |
253 | bfd_elf_make_generic_object (bfd *abfd) | |
254 | { | |
255 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_obj_tdata), | |
4dfe6ac6 | 256 | GENERIC_ELF_DATA); |
0ffa91dd NC |
257 | } |
258 | ||
b34976b6 | 259 | bfd_boolean |
217aa764 | 260 | bfd_elf_mkcorefile (bfd *abfd) |
252b5132 | 261 | { |
c044fabd | 262 | /* I think this can be done just like an object file. */ |
0ffa91dd | 263 | return bfd_elf_make_generic_object (abfd); |
252b5132 RH |
264 | } |
265 | ||
72a80a16 | 266 | static char * |
217aa764 | 267 | bfd_elf_get_str_section (bfd *abfd, unsigned int shindex) |
252b5132 RH |
268 | { |
269 | Elf_Internal_Shdr **i_shdrp; | |
f075ee0c | 270 | bfd_byte *shstrtab = NULL; |
dc810e39 AM |
271 | file_ptr offset; |
272 | bfd_size_type shstrtabsize; | |
252b5132 RH |
273 | |
274 | i_shdrp = elf_elfsections (abfd); | |
74f2e02b AM |
275 | if (i_shdrp == 0 |
276 | || shindex >= elf_numsections (abfd) | |
277 | || i_shdrp[shindex] == 0) | |
f075ee0c | 278 | return NULL; |
252b5132 | 279 | |
f075ee0c | 280 | shstrtab = i_shdrp[shindex]->contents; |
252b5132 RH |
281 | if (shstrtab == NULL) |
282 | { | |
c044fabd | 283 | /* No cached one, attempt to read, and cache what we read. */ |
252b5132 RH |
284 | offset = i_shdrp[shindex]->sh_offset; |
285 | shstrtabsize = i_shdrp[shindex]->sh_size; | |
c6c60d09 JJ |
286 | |
287 | /* Allocate and clear an extra byte at the end, to prevent crashes | |
288 | in case the string table is not terminated. */ | |
3471d59d | 289 | if (shstrtabsize + 1 <= 1 |
a50b1753 | 290 | || (shstrtab = (bfd_byte *) bfd_alloc (abfd, shstrtabsize + 1)) == NULL |
c6c60d09 JJ |
291 | || bfd_seek (abfd, offset, SEEK_SET) != 0) |
292 | shstrtab = NULL; | |
293 | else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize) | |
294 | { | |
295 | if (bfd_get_error () != bfd_error_system_call) | |
296 | bfd_set_error (bfd_error_file_truncated); | |
297 | shstrtab = NULL; | |
3471d59d CC |
298 | /* Once we've failed to read it, make sure we don't keep |
299 | trying. Otherwise, we'll keep allocating space for | |
300 | the string table over and over. */ | |
301 | i_shdrp[shindex]->sh_size = 0; | |
c6c60d09 JJ |
302 | } |
303 | else | |
304 | shstrtab[shstrtabsize] = '\0'; | |
217aa764 | 305 | i_shdrp[shindex]->contents = shstrtab; |
252b5132 | 306 | } |
f075ee0c | 307 | return (char *) shstrtab; |
252b5132 RH |
308 | } |
309 | ||
310 | char * | |
217aa764 AM |
311 | bfd_elf_string_from_elf_section (bfd *abfd, |
312 | unsigned int shindex, | |
313 | unsigned int strindex) | |
252b5132 RH |
314 | { |
315 | Elf_Internal_Shdr *hdr; | |
316 | ||
317 | if (strindex == 0) | |
318 | return ""; | |
319 | ||
74f2e02b AM |
320 | if (elf_elfsections (abfd) == NULL || shindex >= elf_numsections (abfd)) |
321 | return NULL; | |
322 | ||
252b5132 RH |
323 | hdr = elf_elfsections (abfd)[shindex]; |
324 | ||
325 | if (hdr->contents == NULL | |
326 | && bfd_elf_get_str_section (abfd, shindex) == NULL) | |
327 | return NULL; | |
328 | ||
329 | if (strindex >= hdr->sh_size) | |
330 | { | |
1b3a8575 | 331 | unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx; |
252b5132 | 332 | (*_bfd_error_handler) |
d003868e AM |
333 | (_("%B: invalid string offset %u >= %lu for section `%s'"), |
334 | abfd, strindex, (unsigned long) hdr->sh_size, | |
1b3a8575 | 335 | (shindex == shstrndx && strindex == hdr->sh_name |
252b5132 | 336 | ? ".shstrtab" |
1b3a8575 | 337 | : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name))); |
45b222d6 | 338 | return NULL; |
252b5132 RH |
339 | } |
340 | ||
341 | return ((char *) hdr->contents) + strindex; | |
342 | } | |
343 | ||
6cdc0ccc AM |
344 | /* Read and convert symbols to internal format. |
345 | SYMCOUNT specifies the number of symbols to read, starting from | |
346 | symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF | |
347 | are non-NULL, they are used to store the internal symbols, external | |
b7c368d0 NC |
348 | symbols, and symbol section index extensions, respectively. |
349 | Returns a pointer to the internal symbol buffer (malloced if necessary) | |
350 | or NULL if there were no symbols or some kind of problem. */ | |
6cdc0ccc AM |
351 | |
352 | Elf_Internal_Sym * | |
217aa764 AM |
353 | bfd_elf_get_elf_syms (bfd *ibfd, |
354 | Elf_Internal_Shdr *symtab_hdr, | |
355 | size_t symcount, | |
356 | size_t symoffset, | |
357 | Elf_Internal_Sym *intsym_buf, | |
358 | void *extsym_buf, | |
359 | Elf_External_Sym_Shndx *extshndx_buf) | |
6cdc0ccc AM |
360 | { |
361 | Elf_Internal_Shdr *shndx_hdr; | |
217aa764 | 362 | void *alloc_ext; |
df622259 | 363 | const bfd_byte *esym; |
6cdc0ccc AM |
364 | Elf_External_Sym_Shndx *alloc_extshndx; |
365 | Elf_External_Sym_Shndx *shndx; | |
4dd07732 | 366 | Elf_Internal_Sym *alloc_intsym; |
6cdc0ccc AM |
367 | Elf_Internal_Sym *isym; |
368 | Elf_Internal_Sym *isymend; | |
9c5bfbb7 | 369 | const struct elf_backend_data *bed; |
6cdc0ccc AM |
370 | size_t extsym_size; |
371 | bfd_size_type amt; | |
372 | file_ptr pos; | |
373 | ||
e44a2c9c AM |
374 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
375 | abort (); | |
376 | ||
6cdc0ccc AM |
377 | if (symcount == 0) |
378 | return intsym_buf; | |
379 | ||
380 | /* Normal syms might have section extension entries. */ | |
381 | shndx_hdr = NULL; | |
382 | if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr) | |
383 | shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr; | |
384 | ||
385 | /* Read the symbols. */ | |
386 | alloc_ext = NULL; | |
387 | alloc_extshndx = NULL; | |
4dd07732 | 388 | alloc_intsym = NULL; |
6cdc0ccc AM |
389 | bed = get_elf_backend_data (ibfd); |
390 | extsym_size = bed->s->sizeof_sym; | |
391 | amt = symcount * extsym_size; | |
392 | pos = symtab_hdr->sh_offset + symoffset * extsym_size; | |
393 | if (extsym_buf == NULL) | |
394 | { | |
d0fb9a8d | 395 | alloc_ext = bfd_malloc2 (symcount, extsym_size); |
6cdc0ccc AM |
396 | extsym_buf = alloc_ext; |
397 | } | |
398 | if (extsym_buf == NULL | |
399 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
400 | || bfd_bread (extsym_buf, amt, ibfd) != amt) | |
401 | { | |
402 | intsym_buf = NULL; | |
403 | goto out; | |
404 | } | |
405 | ||
406 | if (shndx_hdr == NULL || shndx_hdr->sh_size == 0) | |
407 | extshndx_buf = NULL; | |
408 | else | |
409 | { | |
410 | amt = symcount * sizeof (Elf_External_Sym_Shndx); | |
411 | pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx); | |
412 | if (extshndx_buf == NULL) | |
413 | { | |
a50b1753 NC |
414 | alloc_extshndx = (Elf_External_Sym_Shndx *) |
415 | bfd_malloc2 (symcount, sizeof (Elf_External_Sym_Shndx)); | |
6cdc0ccc AM |
416 | extshndx_buf = alloc_extshndx; |
417 | } | |
418 | if (extshndx_buf == NULL | |
419 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
420 | || bfd_bread (extshndx_buf, amt, ibfd) != amt) | |
421 | { | |
422 | intsym_buf = NULL; | |
423 | goto out; | |
424 | } | |
425 | } | |
426 | ||
427 | if (intsym_buf == NULL) | |
428 | { | |
a50b1753 NC |
429 | alloc_intsym = (Elf_Internal_Sym *) |
430 | bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym)); | |
4dd07732 | 431 | intsym_buf = alloc_intsym; |
6cdc0ccc AM |
432 | if (intsym_buf == NULL) |
433 | goto out; | |
434 | } | |
435 | ||
436 | /* Convert the symbols to internal form. */ | |
437 | isymend = intsym_buf + symcount; | |
a50b1753 NC |
438 | for (esym = (const bfd_byte *) extsym_buf, isym = intsym_buf, |
439 | shndx = extshndx_buf; | |
6cdc0ccc AM |
440 | isym < isymend; |
441 | esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL) | |
8384fb8f AM |
442 | if (!(*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym)) |
443 | { | |
444 | symoffset += (esym - (bfd_byte *) extsym_buf) / extsym_size; | |
445 | (*_bfd_error_handler) (_("%B symbol number %lu references " | |
446 | "nonexistent SHT_SYMTAB_SHNDX section"), | |
447 | ibfd, (unsigned long) symoffset); | |
4dd07732 AM |
448 | if (alloc_intsym != NULL) |
449 | free (alloc_intsym); | |
8384fb8f AM |
450 | intsym_buf = NULL; |
451 | goto out; | |
452 | } | |
6cdc0ccc AM |
453 | |
454 | out: | |
455 | if (alloc_ext != NULL) | |
456 | free (alloc_ext); | |
457 | if (alloc_extshndx != NULL) | |
458 | free (alloc_extshndx); | |
459 | ||
460 | return intsym_buf; | |
461 | } | |
462 | ||
5cab59f6 AM |
463 | /* Look up a symbol name. */ |
464 | const char * | |
be8dd2ca AM |
465 | bfd_elf_sym_name (bfd *abfd, |
466 | Elf_Internal_Shdr *symtab_hdr, | |
26c61ae5 L |
467 | Elf_Internal_Sym *isym, |
468 | asection *sym_sec) | |
5cab59f6 | 469 | { |
26c61ae5 | 470 | const char *name; |
5cab59f6 | 471 | unsigned int iname = isym->st_name; |
be8dd2ca | 472 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 473 | |
138f35cc JJ |
474 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
475 | /* Check for a bogus st_shndx to avoid crashing. */ | |
4fbb74a6 | 476 | && isym->st_shndx < elf_numsections (abfd)) |
5cab59f6 AM |
477 | { |
478 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
479 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
480 | } | |
481 | ||
26c61ae5 L |
482 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
483 | if (name == NULL) | |
484 | name = "(null)"; | |
485 | else if (sym_sec && *name == '\0') | |
486 | name = bfd_section_name (abfd, sym_sec); | |
487 | ||
488 | return name; | |
5cab59f6 AM |
489 | } |
490 | ||
dbb410c3 AM |
491 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
492 | sections. The first element is the flags, the rest are section | |
493 | pointers. */ | |
494 | ||
495 | typedef union elf_internal_group { | |
496 | Elf_Internal_Shdr *shdr; | |
497 | unsigned int flags; | |
498 | } Elf_Internal_Group; | |
499 | ||
b885599b AM |
500 | /* Return the name of the group signature symbol. Why isn't the |
501 | signature just a string? */ | |
502 | ||
503 | static const char * | |
217aa764 | 504 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 505 | { |
9dce4196 | 506 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
507 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
508 | Elf_External_Sym_Shndx eshndx; | |
509 | Elf_Internal_Sym isym; | |
b885599b | 510 | |
13792e9d L |
511 | /* First we need to ensure the symbol table is available. Make sure |
512 | that it is a symbol table section. */ | |
4fbb74a6 AM |
513 | if (ghdr->sh_link >= elf_numsections (abfd)) |
514 | return NULL; | |
13792e9d L |
515 | hdr = elf_elfsections (abfd) [ghdr->sh_link]; |
516 | if (hdr->sh_type != SHT_SYMTAB | |
517 | || ! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
b885599b AM |
518 | return NULL; |
519 | ||
9dce4196 AM |
520 | /* Go read the symbol. */ |
521 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
522 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
523 | &isym, esym, &eshndx) == NULL) | |
b885599b | 524 | return NULL; |
9dce4196 | 525 | |
26c61ae5 | 526 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
527 | } |
528 | ||
dbb410c3 AM |
529 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
530 | ||
b34976b6 | 531 | static bfd_boolean |
217aa764 | 532 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
533 | { |
534 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
535 | ||
536 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
537 | is set to -1 if there are no SHT_GROUP sections. */ | |
538 | if (num_group == 0) | |
539 | { | |
540 | unsigned int i, shnum; | |
541 | ||
542 | /* First count the number of groups. If we have a SHT_GROUP | |
543 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 544 | shnum = elf_numsections (abfd); |
dbb410c3 | 545 | num_group = 0; |
08a40648 | 546 | |
1783205a NC |
547 | #define IS_VALID_GROUP_SECTION_HEADER(shdr) \ |
548 | ( (shdr)->sh_type == SHT_GROUP \ | |
549 | && (shdr)->sh_size >= (2 * GRP_ENTRY_SIZE) \ | |
550 | && (shdr)->sh_entsize == GRP_ENTRY_SIZE \ | |
551 | && ((shdr)->sh_size % GRP_ENTRY_SIZE) == 0) | |
08a40648 | 552 | |
dbb410c3 AM |
553 | for (i = 0; i < shnum; i++) |
554 | { | |
555 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a NC |
556 | |
557 | if (IS_VALID_GROUP_SECTION_HEADER (shdr)) | |
dbb410c3 AM |
558 | num_group += 1; |
559 | } | |
560 | ||
561 | if (num_group == 0) | |
20dbb49d L |
562 | { |
563 | num_group = (unsigned) -1; | |
564 | elf_tdata (abfd)->num_group = num_group; | |
565 | } | |
566 | else | |
dbb410c3 AM |
567 | { |
568 | /* We keep a list of elf section headers for group sections, | |
569 | so we can find them quickly. */ | |
20dbb49d | 570 | bfd_size_type amt; |
d0fb9a8d | 571 | |
20dbb49d | 572 | elf_tdata (abfd)->num_group = num_group; |
a50b1753 NC |
573 | elf_tdata (abfd)->group_sect_ptr = (Elf_Internal_Shdr **) |
574 | bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *)); | |
dbb410c3 | 575 | if (elf_tdata (abfd)->group_sect_ptr == NULL) |
b34976b6 | 576 | return FALSE; |
dbb410c3 AM |
577 | |
578 | num_group = 0; | |
579 | for (i = 0; i < shnum; i++) | |
580 | { | |
581 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a NC |
582 | |
583 | if (IS_VALID_GROUP_SECTION_HEADER (shdr)) | |
dbb410c3 | 584 | { |
973ffd63 | 585 | unsigned char *src; |
dbb410c3 AM |
586 | Elf_Internal_Group *dest; |
587 | ||
588 | /* Add to list of sections. */ | |
589 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
590 | num_group += 1; | |
591 | ||
592 | /* Read the raw contents. */ | |
593 | BFD_ASSERT (sizeof (*dest) >= 4); | |
594 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
a50b1753 NC |
595 | shdr->contents = (unsigned char *) |
596 | bfd_alloc2 (abfd, shdr->sh_size, sizeof (*dest) / 4); | |
1783205a NC |
597 | /* PR binutils/4110: Handle corrupt group headers. */ |
598 | if (shdr->contents == NULL) | |
599 | { | |
600 | _bfd_error_handler | |
601 | (_("%B: Corrupt size field in group section header: 0x%lx"), abfd, shdr->sh_size); | |
602 | bfd_set_error (bfd_error_bad_value); | |
603 | return FALSE; | |
604 | } | |
605 | ||
606 | memset (shdr->contents, 0, amt); | |
607 | ||
608 | if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
dbb410c3 AM |
609 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) |
610 | != shdr->sh_size)) | |
b34976b6 | 611 | return FALSE; |
dbb410c3 AM |
612 | |
613 | /* Translate raw contents, a flag word followed by an | |
614 | array of elf section indices all in target byte order, | |
615 | to the flag word followed by an array of elf section | |
616 | pointers. */ | |
617 | src = shdr->contents + shdr->sh_size; | |
618 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
619 | while (1) | |
620 | { | |
621 | unsigned int idx; | |
622 | ||
623 | src -= 4; | |
624 | --dest; | |
625 | idx = H_GET_32 (abfd, src); | |
626 | if (src == shdr->contents) | |
627 | { | |
628 | dest->flags = idx; | |
b885599b AM |
629 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
630 | shdr->bfd_section->flags | |
631 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
632 | break; |
633 | } | |
634 | if (idx >= shnum) | |
635 | { | |
636 | ((*_bfd_error_handler) | |
d003868e | 637 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
638 | idx = 0; |
639 | } | |
640 | dest->shdr = elf_elfsections (abfd)[idx]; | |
641 | } | |
642 | } | |
643 | } | |
644 | } | |
645 | } | |
646 | ||
647 | if (num_group != (unsigned) -1) | |
648 | { | |
649 | unsigned int i; | |
650 | ||
651 | for (i = 0; i < num_group; i++) | |
652 | { | |
653 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
654 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
655 | unsigned int n_elt = shdr->sh_size / 4; | |
656 | ||
657 | /* Look through this group's sections to see if current | |
658 | section is a member. */ | |
659 | while (--n_elt != 0) | |
660 | if ((++idx)->shdr == hdr) | |
661 | { | |
e0e8c97f | 662 | asection *s = NULL; |
dbb410c3 AM |
663 | |
664 | /* We are a member of this group. Go looking through | |
665 | other members to see if any others are linked via | |
666 | next_in_group. */ | |
667 | idx = (Elf_Internal_Group *) shdr->contents; | |
668 | n_elt = shdr->sh_size / 4; | |
669 | while (--n_elt != 0) | |
670 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 671 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
672 | break; |
673 | if (n_elt != 0) | |
674 | { | |
dbb410c3 AM |
675 | /* Snarf the group name from other member, and |
676 | insert current section in circular list. */ | |
945906ff AM |
677 | elf_group_name (newsect) = elf_group_name (s); |
678 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
679 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
680 | } |
681 | else | |
682 | { | |
dbb410c3 AM |
683 | const char *gname; |
684 | ||
b885599b AM |
685 | gname = group_signature (abfd, shdr); |
686 | if (gname == NULL) | |
b34976b6 | 687 | return FALSE; |
945906ff | 688 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
689 | |
690 | /* Start a circular list with one element. */ | |
945906ff | 691 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 692 | } |
b885599b | 693 | |
9dce4196 AM |
694 | /* If the group section has been created, point to the |
695 | new member. */ | |
dbb410c3 | 696 | if (shdr->bfd_section != NULL) |
945906ff | 697 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 698 | |
dbb410c3 AM |
699 | i = num_group - 1; |
700 | break; | |
701 | } | |
702 | } | |
703 | } | |
704 | ||
945906ff | 705 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 706 | { |
d003868e AM |
707 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
708 | abfd, newsect); | |
dbb410c3 | 709 | } |
b34976b6 | 710 | return TRUE; |
dbb410c3 AM |
711 | } |
712 | ||
3d7f7666 | 713 | bfd_boolean |
dd863624 | 714 | _bfd_elf_setup_sections (bfd *abfd) |
3d7f7666 L |
715 | { |
716 | unsigned int i; | |
717 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
718 | bfd_boolean result = TRUE; | |
dd863624 L |
719 | asection *s; |
720 | ||
721 | /* Process SHF_LINK_ORDER. */ | |
722 | for (s = abfd->sections; s != NULL; s = s->next) | |
723 | { | |
724 | Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr; | |
725 | if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0) | |
726 | { | |
727 | unsigned int elfsec = this_hdr->sh_link; | |
728 | /* FIXME: The old Intel compiler and old strip/objcopy may | |
729 | not set the sh_link or sh_info fields. Hence we could | |
730 | get the situation where elfsec is 0. */ | |
731 | if (elfsec == 0) | |
732 | { | |
4fbb74a6 | 733 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dd863624 L |
734 | if (bed->link_order_error_handler) |
735 | bed->link_order_error_handler | |
736 | (_("%B: warning: sh_link not set for section `%A'"), | |
737 | abfd, s); | |
738 | } | |
739 | else | |
740 | { | |
91d6fa6a | 741 | asection *linksec = NULL; |
25bbc984 | 742 | |
4fbb74a6 AM |
743 | if (elfsec < elf_numsections (abfd)) |
744 | { | |
745 | this_hdr = elf_elfsections (abfd)[elfsec]; | |
91d6fa6a | 746 | linksec = this_hdr->bfd_section; |
4fbb74a6 | 747 | } |
25bbc984 L |
748 | |
749 | /* PR 1991, 2008: | |
750 | Some strip/objcopy may leave an incorrect value in | |
751 | sh_link. We don't want to proceed. */ | |
91d6fa6a | 752 | if (linksec == NULL) |
25bbc984 L |
753 | { |
754 | (*_bfd_error_handler) | |
755 | (_("%B: sh_link [%d] in section `%A' is incorrect"), | |
756 | s->owner, s, elfsec); | |
757 | result = FALSE; | |
758 | } | |
759 | ||
91d6fa6a | 760 | elf_linked_to_section (s) = linksec; |
dd863624 L |
761 | } |
762 | } | |
763 | } | |
3d7f7666 | 764 | |
dd863624 | 765 | /* Process section groups. */ |
3d7f7666 L |
766 | if (num_group == (unsigned) -1) |
767 | return result; | |
768 | ||
769 | for (i = 0; i < num_group; i++) | |
770 | { | |
771 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
772 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
773 | unsigned int n_elt = shdr->sh_size / 4; | |
774 | ||
775 | while (--n_elt != 0) | |
776 | if ((++idx)->shdr->bfd_section) | |
777 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
778 | else if (idx->shdr->sh_type == SHT_RELA | |
779 | || idx->shdr->sh_type == SHT_REL) | |
780 | /* We won't include relocation sections in section groups in | |
781 | output object files. We adjust the group section size here | |
782 | so that relocatable link will work correctly when | |
783 | relocation sections are in section group in input object | |
784 | files. */ | |
785 | shdr->bfd_section->size -= 4; | |
786 | else | |
787 | { | |
788 | /* There are some unknown sections in the group. */ | |
789 | (*_bfd_error_handler) | |
d003868e AM |
790 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
791 | abfd, | |
3d7f7666 | 792 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
793 | bfd_elf_string_from_elf_section (abfd, |
794 | (elf_elfheader (abfd) | |
795 | ->e_shstrndx), | |
796 | idx->shdr->sh_name), | |
3d7f7666 L |
797 | shdr->bfd_section->name); |
798 | result = FALSE; | |
799 | } | |
800 | } | |
801 | return result; | |
802 | } | |
803 | ||
72adc230 AM |
804 | bfd_boolean |
805 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
806 | { | |
807 | return elf_next_in_group (sec) != NULL; | |
808 | } | |
809 | ||
252b5132 RH |
810 | /* Make a BFD section from an ELF section. We store a pointer to the |
811 | BFD section in the bfd_section field of the header. */ | |
812 | ||
b34976b6 | 813 | bfd_boolean |
217aa764 AM |
814 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
815 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
816 | const char *name, |
817 | int shindex) | |
252b5132 RH |
818 | { |
819 | asection *newsect; | |
820 | flagword flags; | |
9c5bfbb7 | 821 | const struct elf_backend_data *bed; |
252b5132 RH |
822 | |
823 | if (hdr->bfd_section != NULL) | |
824 | { | |
825 | BFD_ASSERT (strcmp (name, | |
826 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 827 | return TRUE; |
252b5132 RH |
828 | } |
829 | ||
830 | newsect = bfd_make_section_anyway (abfd, name); | |
831 | if (newsect == NULL) | |
b34976b6 | 832 | return FALSE; |
252b5132 | 833 | |
1829f4b2 AM |
834 | hdr->bfd_section = newsect; |
835 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 836 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 837 | |
2f89ff8d L |
838 | /* Always use the real type/flags. */ |
839 | elf_section_type (newsect) = hdr->sh_type; | |
840 | elf_section_flags (newsect) = hdr->sh_flags; | |
841 | ||
252b5132 RH |
842 | newsect->filepos = hdr->sh_offset; |
843 | ||
844 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
845 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
846 | || ! bfd_set_section_alignment (abfd, newsect, | |
72de5009 | 847 | bfd_log2 (hdr->sh_addralign))) |
b34976b6 | 848 | return FALSE; |
252b5132 RH |
849 | |
850 | flags = SEC_NO_FLAGS; | |
851 | if (hdr->sh_type != SHT_NOBITS) | |
852 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 853 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 854 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
855 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
856 | { | |
857 | flags |= SEC_ALLOC; | |
858 | if (hdr->sh_type != SHT_NOBITS) | |
859 | flags |= SEC_LOAD; | |
860 | } | |
861 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
862 | flags |= SEC_READONLY; | |
863 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
864 | flags |= SEC_CODE; | |
865 | else if ((flags & SEC_LOAD) != 0) | |
866 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
867 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
868 | { | |
869 | flags |= SEC_MERGE; | |
870 | newsect->entsize = hdr->sh_entsize; | |
871 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
872 | flags |= SEC_STRINGS; | |
873 | } | |
dbb410c3 AM |
874 | if (hdr->sh_flags & SHF_GROUP) |
875 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 876 | return FALSE; |
13ae64f3 JJ |
877 | if ((hdr->sh_flags & SHF_TLS) != 0) |
878 | flags |= SEC_THREAD_LOCAL; | |
18ae9cc1 L |
879 | if ((hdr->sh_flags & SHF_EXCLUDE) != 0) |
880 | flags |= SEC_EXCLUDE; | |
252b5132 | 881 | |
3d2b39cf | 882 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 883 | { |
3d2b39cf L |
884 | /* The debugging sections appear to be recognized only by name, |
885 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
886 | static const struct | |
887 | { | |
888 | const char *name; | |
889 | int len; | |
890 | } debug_sections [] = | |
891 | { | |
0112cd26 | 892 | { STRING_COMMA_LEN ("debug") }, /* 'd' */ |
3d2b39cf L |
893 | { NULL, 0 }, /* 'e' */ |
894 | { NULL, 0 }, /* 'f' */ | |
0112cd26 | 895 | { STRING_COMMA_LEN ("gnu.linkonce.wi.") }, /* 'g' */ |
3d2b39cf L |
896 | { NULL, 0 }, /* 'h' */ |
897 | { NULL, 0 }, /* 'i' */ | |
898 | { NULL, 0 }, /* 'j' */ | |
899 | { NULL, 0 }, /* 'k' */ | |
0112cd26 | 900 | { STRING_COMMA_LEN ("line") }, /* 'l' */ |
3d2b39cf L |
901 | { NULL, 0 }, /* 'm' */ |
902 | { NULL, 0 }, /* 'n' */ | |
903 | { NULL, 0 }, /* 'o' */ | |
904 | { NULL, 0 }, /* 'p' */ | |
905 | { NULL, 0 }, /* 'q' */ | |
906 | { NULL, 0 }, /* 'r' */ | |
1b315056 CS |
907 | { STRING_COMMA_LEN ("stab") }, /* 's' */ |
908 | { NULL, 0 }, /* 't' */ | |
909 | { NULL, 0 }, /* 'u' */ | |
910 | { NULL, 0 }, /* 'v' */ | |
911 | { NULL, 0 }, /* 'w' */ | |
912 | { NULL, 0 }, /* 'x' */ | |
913 | { NULL, 0 }, /* 'y' */ | |
914 | { STRING_COMMA_LEN ("zdebug") } /* 'z' */ | |
3d2b39cf | 915 | }; |
08a40648 | 916 | |
3d2b39cf L |
917 | if (name [0] == '.') |
918 | { | |
919 | int i = name [1] - 'd'; | |
920 | if (i >= 0 | |
921 | && i < (int) ARRAY_SIZE (debug_sections) | |
922 | && debug_sections [i].name != NULL | |
923 | && strncmp (&name [1], debug_sections [i].name, | |
924 | debug_sections [i].len) == 0) | |
925 | flags |= SEC_DEBUGGING; | |
926 | } | |
927 | } | |
252b5132 RH |
928 | |
929 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
930 | only link a single copy of the section. This is used to support | |
931 | g++. g++ will emit each template expansion in its own section. | |
932 | The symbols will be defined as weak, so that multiple definitions | |
933 | are permitted. The GNU linker extension is to actually discard | |
934 | all but one of the sections. */ | |
0112cd26 | 935 | if (CONST_STRNEQ (name, ".gnu.linkonce") |
b885599b | 936 | && elf_next_in_group (newsect) == NULL) |
252b5132 RH |
937 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
938 | ||
fa152c49 JW |
939 | bed = get_elf_backend_data (abfd); |
940 | if (bed->elf_backend_section_flags) | |
941 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 942 | return FALSE; |
fa152c49 | 943 | |
252b5132 | 944 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 945 | return FALSE; |
252b5132 | 946 | |
718175fa JK |
947 | /* We do not parse the PT_NOTE segments as we are interested even in the |
948 | separate debug info files which may have the segments offsets corrupted. | |
949 | PT_NOTEs from the core files are currently not parsed using BFD. */ | |
950 | if (hdr->sh_type == SHT_NOTE) | |
951 | { | |
baea7ef1 | 952 | bfd_byte *contents; |
718175fa | 953 | |
baea7ef1 | 954 | if (!bfd_malloc_and_get_section (abfd, newsect, &contents)) |
718175fa JK |
955 | return FALSE; |
956 | ||
baea7ef1 | 957 | elf_parse_notes (abfd, (char *) contents, hdr->sh_size, -1); |
718175fa JK |
958 | free (contents); |
959 | } | |
960 | ||
252b5132 RH |
961 | if ((flags & SEC_ALLOC) != 0) |
962 | { | |
963 | Elf_Internal_Phdr *phdr; | |
6ffd7900 AM |
964 | unsigned int i, nload; |
965 | ||
966 | /* Some ELF linkers produce binaries with all the program header | |
967 | p_paddr fields zero. If we have such a binary with more than | |
968 | one PT_LOAD header, then leave the section lma equal to vma | |
969 | so that we don't create sections with overlapping lma. */ | |
970 | phdr = elf_tdata (abfd)->phdr; | |
971 | for (nload = 0, i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
972 | if (phdr->p_paddr != 0) | |
973 | break; | |
974 | else if (phdr->p_type == PT_LOAD && phdr->p_memsz != 0) | |
975 | ++nload; | |
976 | if (i >= elf_elfheader (abfd)->e_phnum && nload > 1) | |
977 | return TRUE; | |
252b5132 | 978 | |
252b5132 RH |
979 | phdr = elf_tdata (abfd)->phdr; |
980 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
981 | { | |
88967714 | 982 | if (phdr->p_type == PT_LOAD |
9a83a553 | 983 | && ELF_SECTION_IN_SEGMENT (hdr, phdr)) |
252b5132 | 984 | { |
88967714 AM |
985 | if ((flags & SEC_LOAD) == 0) |
986 | newsect->lma = (phdr->p_paddr | |
987 | + hdr->sh_addr - phdr->p_vaddr); | |
988 | else | |
989 | /* We used to use the same adjustment for SEC_LOAD | |
990 | sections, but that doesn't work if the segment | |
991 | is packed with code from multiple VMAs. | |
992 | Instead we calculate the section LMA based on | |
993 | the segment LMA. It is assumed that the | |
994 | segment will contain sections with contiguous | |
995 | LMAs, even if the VMAs are not. */ | |
996 | newsect->lma = (phdr->p_paddr | |
997 | + hdr->sh_offset - phdr->p_offset); | |
998 | ||
999 | /* With contiguous segments, we can't tell from file | |
1000 | offsets whether a section with zero size should | |
1001 | be placed at the end of one segment or the | |
1002 | beginning of the next. Decide based on vaddr. */ | |
1003 | if (hdr->sh_addr >= phdr->p_vaddr | |
1004 | && (hdr->sh_addr + hdr->sh_size | |
1005 | <= phdr->p_vaddr + phdr->p_memsz)) | |
1006 | break; | |
252b5132 RH |
1007 | } |
1008 | } | |
1009 | } | |
1010 | ||
b34976b6 | 1011 | return TRUE; |
252b5132 RH |
1012 | } |
1013 | ||
252b5132 RH |
1014 | const char *const bfd_elf_section_type_names[] = { |
1015 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
1016 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
1017 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
1018 | }; | |
1019 | ||
1049f94e | 1020 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
1021 | output, and the reloc is against an external symbol, and nothing |
1022 | has given us any additional addend, the resulting reloc will also | |
1023 | be against the same symbol. In such a case, we don't want to | |
1024 | change anything about the way the reloc is handled, since it will | |
1025 | all be done at final link time. Rather than put special case code | |
1026 | into bfd_perform_relocation, all the reloc types use this howto | |
1027 | function. It just short circuits the reloc if producing | |
1049f94e | 1028 | relocatable output against an external symbol. */ |
252b5132 | 1029 | |
252b5132 | 1030 | bfd_reloc_status_type |
217aa764 AM |
1031 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
1032 | arelent *reloc_entry, | |
1033 | asymbol *symbol, | |
1034 | void *data ATTRIBUTE_UNUSED, | |
1035 | asection *input_section, | |
1036 | bfd *output_bfd, | |
1037 | char **error_message ATTRIBUTE_UNUSED) | |
1038 | { | |
1039 | if (output_bfd != NULL | |
252b5132 RH |
1040 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
1041 | && (! reloc_entry->howto->partial_inplace | |
1042 | || reloc_entry->addend == 0)) | |
1043 | { | |
1044 | reloc_entry->address += input_section->output_offset; | |
1045 | return bfd_reloc_ok; | |
1046 | } | |
1047 | ||
1048 | return bfd_reloc_continue; | |
1049 | } | |
1050 | \f | |
0ac4564e L |
1051 | /* Copy the program header and other data from one object module to |
1052 | another. */ | |
252b5132 | 1053 | |
b34976b6 | 1054 | bfd_boolean |
217aa764 | 1055 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
1056 | { |
1057 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1058 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1059 | return TRUE; |
2d502050 L |
1060 | |
1061 | BFD_ASSERT (!elf_flags_init (obfd) | |
1062 | || (elf_elfheader (obfd)->e_flags | |
1063 | == elf_elfheader (ibfd)->e_flags)); | |
1064 | ||
0ac4564e | 1065 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1066 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 | 1067 | elf_flags_init (obfd) = TRUE; |
104d59d1 JM |
1068 | |
1069 | /* Copy object attributes. */ | |
1070 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
b34976b6 | 1071 | return TRUE; |
2d502050 L |
1072 | } |
1073 | ||
cedc298e L |
1074 | static const char * |
1075 | get_segment_type (unsigned int p_type) | |
1076 | { | |
1077 | const char *pt; | |
1078 | switch (p_type) | |
1079 | { | |
1080 | case PT_NULL: pt = "NULL"; break; | |
1081 | case PT_LOAD: pt = "LOAD"; break; | |
1082 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1083 | case PT_INTERP: pt = "INTERP"; break; | |
1084 | case PT_NOTE: pt = "NOTE"; break; | |
1085 | case PT_SHLIB: pt = "SHLIB"; break; | |
1086 | case PT_PHDR: pt = "PHDR"; break; | |
1087 | case PT_TLS: pt = "TLS"; break; | |
1088 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; | |
2b05f1b7 | 1089 | case PT_GNU_STACK: pt = "STACK"; break; |
cedc298e L |
1090 | case PT_GNU_RELRO: pt = "RELRO"; break; |
1091 | default: pt = NULL; break; | |
1092 | } | |
1093 | return pt; | |
1094 | } | |
1095 | ||
f0b79d91 L |
1096 | /* Print out the program headers. */ |
1097 | ||
b34976b6 | 1098 | bfd_boolean |
217aa764 | 1099 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1100 | { |
a50b1753 | 1101 | FILE *f = (FILE *) farg; |
252b5132 RH |
1102 | Elf_Internal_Phdr *p; |
1103 | asection *s; | |
1104 | bfd_byte *dynbuf = NULL; | |
1105 | ||
1106 | p = elf_tdata (abfd)->phdr; | |
1107 | if (p != NULL) | |
1108 | { | |
1109 | unsigned int i, c; | |
1110 | ||
1111 | fprintf (f, _("\nProgram Header:\n")); | |
1112 | c = elf_elfheader (abfd)->e_phnum; | |
1113 | for (i = 0; i < c; i++, p++) | |
1114 | { | |
cedc298e | 1115 | const char *pt = get_segment_type (p->p_type); |
252b5132 RH |
1116 | char buf[20]; |
1117 | ||
cedc298e | 1118 | if (pt == NULL) |
252b5132 | 1119 | { |
cedc298e L |
1120 | sprintf (buf, "0x%lx", p->p_type); |
1121 | pt = buf; | |
252b5132 | 1122 | } |
dc810e39 | 1123 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1124 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1125 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1126 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1127 | fprintf (f, " paddr 0x"); |
60b89a18 | 1128 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1129 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1130 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1131 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1132 | fprintf (f, " memsz 0x"); |
60b89a18 | 1133 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1134 | fprintf (f, " flags %c%c%c", |
1135 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1136 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1137 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1138 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1139 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1140 | fprintf (f, "\n"); |
1141 | } | |
1142 | } | |
1143 | ||
1144 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1145 | if (s != NULL) | |
1146 | { | |
cb33740c | 1147 | unsigned int elfsec; |
dc810e39 | 1148 | unsigned long shlink; |
252b5132 RH |
1149 | bfd_byte *extdyn, *extdynend; |
1150 | size_t extdynsize; | |
217aa764 | 1151 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1152 | |
1153 | fprintf (f, _("\nDynamic Section:\n")); | |
1154 | ||
eea6121a | 1155 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1156 | goto error_return; |
1157 | ||
1158 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
cb33740c | 1159 | if (elfsec == SHN_BAD) |
252b5132 | 1160 | goto error_return; |
dc810e39 | 1161 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1162 | |
1163 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1164 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1165 | ||
1166 | extdyn = dynbuf; | |
eea6121a | 1167 | extdynend = extdyn + s->size; |
252b5132 RH |
1168 | for (; extdyn < extdynend; extdyn += extdynsize) |
1169 | { | |
1170 | Elf_Internal_Dyn dyn; | |
ad9563d6 | 1171 | const char *name = ""; |
252b5132 | 1172 | char ab[20]; |
b34976b6 | 1173 | bfd_boolean stringp; |
ad9563d6 | 1174 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 1175 | |
217aa764 | 1176 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1177 | |
1178 | if (dyn.d_tag == DT_NULL) | |
1179 | break; | |
1180 | ||
b34976b6 | 1181 | stringp = FALSE; |
252b5132 RH |
1182 | switch (dyn.d_tag) |
1183 | { | |
1184 | default: | |
ad9563d6 CM |
1185 | if (bed->elf_backend_get_target_dtag) |
1186 | name = (*bed->elf_backend_get_target_dtag) (dyn.d_tag); | |
1187 | ||
1188 | if (!strcmp (name, "")) | |
1189 | { | |
1190 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1191 | name = ab; | |
1192 | } | |
252b5132 RH |
1193 | break; |
1194 | ||
b34976b6 | 1195 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1196 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1197 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1198 | case DT_HASH: name = "HASH"; break; | |
1199 | case DT_STRTAB: name = "STRTAB"; break; | |
1200 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1201 | case DT_RELA: name = "RELA"; break; | |
1202 | case DT_RELASZ: name = "RELASZ"; break; | |
1203 | case DT_RELAENT: name = "RELAENT"; break; | |
1204 | case DT_STRSZ: name = "STRSZ"; break; | |
1205 | case DT_SYMENT: name = "SYMENT"; break; | |
1206 | case DT_INIT: name = "INIT"; break; | |
1207 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1208 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1209 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1210 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1211 | case DT_REL: name = "REL"; break; | |
1212 | case DT_RELSZ: name = "RELSZ"; break; | |
1213 | case DT_RELENT: name = "RELENT"; break; | |
1214 | case DT_PLTREL: name = "PLTREL"; break; | |
1215 | case DT_DEBUG: name = "DEBUG"; break; | |
1216 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1217 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1218 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1219 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1220 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1221 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1222 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1223 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1224 | case DT_FLAGS: name = "FLAGS"; break; |
1225 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1226 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1227 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1228 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1229 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1230 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1231 | case DT_FEATURE: name = "FEATURE"; break; | |
1232 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1233 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1234 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1235 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1236 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1237 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1238 | case DT_PLTPAD: name = "PLTPAD"; break; |
1239 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1240 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1241 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1242 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1243 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1244 | case DT_VERSYM: name = "VERSYM"; break; |
1245 | case DT_VERDEF: name = "VERDEF"; break; | |
1246 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1247 | case DT_VERNEED: name = "VERNEED"; break; | |
1248 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1249 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1250 | case DT_USED: name = "USED"; break; |
b34976b6 | 1251 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
fdc90cb4 | 1252 | case DT_GNU_HASH: name = "GNU_HASH"; break; |
252b5132 RH |
1253 | } |
1254 | ||
ad9563d6 | 1255 | fprintf (f, " %-20s ", name); |
252b5132 | 1256 | if (! stringp) |
a1f3c56e AN |
1257 | { |
1258 | fprintf (f, "0x"); | |
1259 | bfd_fprintf_vma (abfd, f, dyn.d_un.d_val); | |
1260 | } | |
252b5132 RH |
1261 | else |
1262 | { | |
1263 | const char *string; | |
dc810e39 | 1264 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1265 | |
dc810e39 | 1266 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1267 | if (string == NULL) |
1268 | goto error_return; | |
1269 | fprintf (f, "%s", string); | |
1270 | } | |
1271 | fprintf (f, "\n"); | |
1272 | } | |
1273 | ||
1274 | free (dynbuf); | |
1275 | dynbuf = NULL; | |
1276 | } | |
1277 | ||
1278 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1279 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1280 | { | |
fc0e6df6 | 1281 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1282 | return FALSE; |
252b5132 RH |
1283 | } |
1284 | ||
1285 | if (elf_dynverdef (abfd) != 0) | |
1286 | { | |
1287 | Elf_Internal_Verdef *t; | |
1288 | ||
1289 | fprintf (f, _("\nVersion definitions:\n")); | |
1290 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1291 | { | |
1292 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
d0fb9a8d JJ |
1293 | t->vd_flags, t->vd_hash, |
1294 | t->vd_nodename ? t->vd_nodename : "<corrupt>"); | |
1295 | if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL) | |
252b5132 RH |
1296 | { |
1297 | Elf_Internal_Verdaux *a; | |
1298 | ||
1299 | fprintf (f, "\t"); | |
1300 | for (a = t->vd_auxptr->vda_nextptr; | |
1301 | a != NULL; | |
1302 | a = a->vda_nextptr) | |
d0fb9a8d JJ |
1303 | fprintf (f, "%s ", |
1304 | a->vda_nodename ? a->vda_nodename : "<corrupt>"); | |
252b5132 RH |
1305 | fprintf (f, "\n"); |
1306 | } | |
1307 | } | |
1308 | } | |
1309 | ||
1310 | if (elf_dynverref (abfd) != 0) | |
1311 | { | |
1312 | Elf_Internal_Verneed *t; | |
1313 | ||
1314 | fprintf (f, _("\nVersion References:\n")); | |
1315 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1316 | { | |
1317 | Elf_Internal_Vernaux *a; | |
1318 | ||
d0fb9a8d JJ |
1319 | fprintf (f, _(" required from %s:\n"), |
1320 | t->vn_filename ? t->vn_filename : "<corrupt>"); | |
252b5132 RH |
1321 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
1322 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
d0fb9a8d JJ |
1323 | a->vna_flags, a->vna_other, |
1324 | a->vna_nodename ? a->vna_nodename : "<corrupt>"); | |
252b5132 RH |
1325 | } |
1326 | } | |
1327 | ||
b34976b6 | 1328 | return TRUE; |
252b5132 RH |
1329 | |
1330 | error_return: | |
1331 | if (dynbuf != NULL) | |
1332 | free (dynbuf); | |
b34976b6 | 1333 | return FALSE; |
252b5132 RH |
1334 | } |
1335 | ||
1336 | /* Display ELF-specific fields of a symbol. */ | |
1337 | ||
1338 | void | |
217aa764 AM |
1339 | bfd_elf_print_symbol (bfd *abfd, |
1340 | void *filep, | |
1341 | asymbol *symbol, | |
1342 | bfd_print_symbol_type how) | |
252b5132 | 1343 | { |
a50b1753 | 1344 | FILE *file = (FILE *) filep; |
252b5132 RH |
1345 | switch (how) |
1346 | { | |
1347 | case bfd_print_symbol_name: | |
1348 | fprintf (file, "%s", symbol->name); | |
1349 | break; | |
1350 | case bfd_print_symbol_more: | |
1351 | fprintf (file, "elf "); | |
60b89a18 | 1352 | bfd_fprintf_vma (abfd, file, symbol->value); |
0af1713e | 1353 | fprintf (file, " %lx", (unsigned long) symbol->flags); |
252b5132 RH |
1354 | break; |
1355 | case bfd_print_symbol_all: | |
1356 | { | |
4e8a9624 AM |
1357 | const char *section_name; |
1358 | const char *name = NULL; | |
9c5bfbb7 | 1359 | const struct elf_backend_data *bed; |
7a13edea | 1360 | unsigned char st_other; |
dbb410c3 | 1361 | bfd_vma val; |
c044fabd | 1362 | |
252b5132 | 1363 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1364 | |
1365 | bed = get_elf_backend_data (abfd); | |
1366 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1367 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1368 | |
1369 | if (name == NULL) | |
1370 | { | |
7ee38065 | 1371 | name = symbol->name; |
217aa764 | 1372 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1373 | } |
1374 | ||
252b5132 RH |
1375 | fprintf (file, " %s\t", section_name); |
1376 | /* Print the "other" value for a symbol. For common symbols, | |
1377 | we've already printed the size; now print the alignment. | |
1378 | For other symbols, we have no specified alignment, and | |
1379 | we've printed the address; now print the size. */ | |
dcf6c779 | 1380 | if (symbol->section && bfd_is_com_section (symbol->section)) |
dbb410c3 AM |
1381 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; |
1382 | else | |
1383 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1384 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1385 | |
1386 | /* If we have version information, print it. */ | |
1387 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1388 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1389 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1390 | { | |
1391 | unsigned int vernum; | |
1392 | const char *version_string; | |
1393 | ||
1394 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1395 | ||
1396 | if (vernum == 0) | |
1397 | version_string = ""; | |
1398 | else if (vernum == 1) | |
1399 | version_string = "Base"; | |
1400 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1401 | version_string = | |
1402 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1403 | else | |
1404 | { | |
1405 | Elf_Internal_Verneed *t; | |
1406 | ||
1407 | version_string = ""; | |
1408 | for (t = elf_tdata (abfd)->verref; | |
1409 | t != NULL; | |
1410 | t = t->vn_nextref) | |
1411 | { | |
1412 | Elf_Internal_Vernaux *a; | |
1413 | ||
1414 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1415 | { | |
1416 | if (a->vna_other == vernum) | |
1417 | { | |
1418 | version_string = a->vna_nodename; | |
1419 | break; | |
1420 | } | |
1421 | } | |
1422 | } | |
1423 | } | |
1424 | ||
1425 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1426 | fprintf (file, " %-11s", version_string); | |
1427 | else | |
1428 | { | |
1429 | int i; | |
1430 | ||
1431 | fprintf (file, " (%s)", version_string); | |
1432 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1433 | putc (' ', file); | |
1434 | } | |
1435 | } | |
1436 | ||
1437 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1438 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1439 | |
7a13edea NC |
1440 | switch (st_other) |
1441 | { | |
1442 | case 0: break; | |
1443 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1444 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1445 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1446 | default: | |
1447 | /* Some other non-defined flags are also present, so print | |
1448 | everything hex. */ | |
1449 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1450 | } | |
252b5132 | 1451 | |
587ff49e | 1452 | fprintf (file, " %s", name); |
252b5132 RH |
1453 | } |
1454 | break; | |
1455 | } | |
1456 | } | |
252b5132 | 1457 | |
252b5132 RH |
1458 | /* Allocate an ELF string table--force the first byte to be zero. */ |
1459 | ||
1460 | struct bfd_strtab_hash * | |
217aa764 | 1461 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1462 | { |
1463 | struct bfd_strtab_hash *ret; | |
1464 | ||
1465 | ret = _bfd_stringtab_init (); | |
1466 | if (ret != NULL) | |
1467 | { | |
1468 | bfd_size_type loc; | |
1469 | ||
b34976b6 | 1470 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1471 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1472 | if (loc == (bfd_size_type) -1) | |
1473 | { | |
1474 | _bfd_stringtab_free (ret); | |
1475 | ret = NULL; | |
1476 | } | |
1477 | } | |
1478 | return ret; | |
1479 | } | |
1480 | \f | |
1481 | /* ELF .o/exec file reading */ | |
1482 | ||
c044fabd | 1483 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1484 | |
b34976b6 | 1485 | bfd_boolean |
217aa764 | 1486 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 | 1487 | { |
4fbb74a6 AM |
1488 | Elf_Internal_Shdr *hdr; |
1489 | Elf_Internal_Ehdr *ehdr; | |
1490 | const struct elf_backend_data *bed; | |
90937f86 | 1491 | const char *name; |
252b5132 | 1492 | |
4fbb74a6 AM |
1493 | if (shindex >= elf_numsections (abfd)) |
1494 | return FALSE; | |
1495 | ||
1496 | hdr = elf_elfsections (abfd)[shindex]; | |
1497 | ehdr = elf_elfheader (abfd); | |
1498 | name = bfd_elf_string_from_elf_section (abfd, ehdr->e_shstrndx, | |
1b3a8575 | 1499 | hdr->sh_name); |
933d961a JJ |
1500 | if (name == NULL) |
1501 | return FALSE; | |
252b5132 | 1502 | |
4fbb74a6 | 1503 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
1504 | switch (hdr->sh_type) |
1505 | { | |
1506 | case SHT_NULL: | |
1507 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1508 | return TRUE; |
252b5132 RH |
1509 | |
1510 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1511 | case SHT_NOBITS: /* .bss section. */ |
1512 | case SHT_HASH: /* .hash section. */ | |
1513 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1514 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1515 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1516 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1517 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
fdc90cb4 | 1518 | case SHT_GNU_HASH: /* .gnu.hash section. */ |
6dc132d9 | 1519 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1520 | |
797fc050 | 1521 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1522 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1523 | return FALSE; |
cfcac11d NC |
1524 | if (hdr->sh_link > elf_numsections (abfd)) |
1525 | { | |
caa83f8b | 1526 | /* PR 10478: Accept Solaris binaries with a sh_link |
cfcac11d NC |
1527 | field set to SHN_BEFORE or SHN_AFTER. */ |
1528 | switch (bfd_get_arch (abfd)) | |
1529 | { | |
caa83f8b | 1530 | case bfd_arch_i386: |
cfcac11d NC |
1531 | case bfd_arch_sparc: |
1532 | if (hdr->sh_link == (SHN_LORESERVE & 0xffff) /* SHN_BEFORE */ | |
1533 | || hdr->sh_link == ((SHN_LORESERVE + 1) & 0xffff) /* SHN_AFTER */) | |
1534 | break; | |
1535 | /* Otherwise fall through. */ | |
1536 | default: | |
1537 | return FALSE; | |
1538 | } | |
1539 | } | |
1540 | else if (elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
8e0ed13f | 1541 | return FALSE; |
cfcac11d | 1542 | else if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
797fc050 AM |
1543 | { |
1544 | Elf_Internal_Shdr *dynsymhdr; | |
1545 | ||
1546 | /* The shared libraries distributed with hpux11 have a bogus | |
1547 | sh_link field for the ".dynamic" section. Find the | |
1548 | string table for the ".dynsym" section instead. */ | |
1549 | if (elf_dynsymtab (abfd) != 0) | |
1550 | { | |
1551 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1552 | hdr->sh_link = dynsymhdr->sh_link; | |
1553 | } | |
1554 | else | |
1555 | { | |
1556 | unsigned int i, num_sec; | |
1557 | ||
1558 | num_sec = elf_numsections (abfd); | |
1559 | for (i = 1; i < num_sec; i++) | |
1560 | { | |
1561 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1562 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1563 | { | |
1564 | hdr->sh_link = dynsymhdr->sh_link; | |
1565 | break; | |
1566 | } | |
1567 | } | |
1568 | } | |
1569 | } | |
1570 | break; | |
1571 | ||
252b5132 RH |
1572 | case SHT_SYMTAB: /* A symbol table */ |
1573 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1574 | return TRUE; |
252b5132 | 1575 | |
a50b2160 JJ |
1576 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1577 | return FALSE; | |
3337c1e5 AM |
1578 | if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size) |
1579 | return FALSE; | |
252b5132 RH |
1580 | BFD_ASSERT (elf_onesymtab (abfd) == 0); |
1581 | elf_onesymtab (abfd) = shindex; | |
1582 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1583 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1584 | abfd->flags |= HAS_SYMS; | |
1585 | ||
1586 | /* Sometimes a shared object will map in the symbol table. If | |
08a40648 AM |
1587 | SHF_ALLOC is set, and this is a shared object, then we also |
1588 | treat this section as a BFD section. We can not base the | |
1589 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1590 | set in a relocatable object file, which would confuse the | |
1591 | linker. */ | |
252b5132 RH |
1592 | if ((hdr->sh_flags & SHF_ALLOC) != 0 |
1593 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1594 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1595 | shindex)) | |
b34976b6 | 1596 | return FALSE; |
252b5132 | 1597 | |
1b3a8575 AM |
1598 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1599 | can't read symbols without that section loaded as well. It | |
1600 | is most likely specified by the next section header. */ | |
1601 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1602 | { | |
1603 | unsigned int i, num_sec; | |
1604 | ||
1605 | num_sec = elf_numsections (abfd); | |
1606 | for (i = shindex + 1; i < num_sec; i++) | |
1607 | { | |
1608 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1609 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1610 | && hdr2->sh_link == shindex) | |
1611 | break; | |
1612 | } | |
1613 | if (i == num_sec) | |
1614 | for (i = 1; i < shindex; i++) | |
1615 | { | |
1616 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1617 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1618 | && hdr2->sh_link == shindex) | |
1619 | break; | |
1620 | } | |
1621 | if (i != shindex) | |
1622 | return bfd_section_from_shdr (abfd, i); | |
1623 | } | |
b34976b6 | 1624 | return TRUE; |
252b5132 RH |
1625 | |
1626 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1627 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1628 | return TRUE; |
252b5132 | 1629 | |
a50b2160 JJ |
1630 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1631 | return FALSE; | |
252b5132 RH |
1632 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); |
1633 | elf_dynsymtab (abfd) = shindex; | |
1634 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1635 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1636 | abfd->flags |= HAS_SYMS; | |
1637 | ||
1638 | /* Besides being a symbol table, we also treat this as a regular | |
1639 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1640 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1641 | |
9ad5cbcf AM |
1642 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1643 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1644 | return TRUE; |
9ad5cbcf | 1645 | |
1b3a8575 | 1646 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1647 | elf_symtab_shndx (abfd) = shindex; |
1648 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1649 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1650 | return TRUE; |
9ad5cbcf | 1651 | |
252b5132 RH |
1652 | case SHT_STRTAB: /* A string table */ |
1653 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1654 | return TRUE; |
252b5132 RH |
1655 | if (ehdr->e_shstrndx == shindex) |
1656 | { | |
1657 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1658 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1659 | return TRUE; |
252b5132 | 1660 | } |
1b3a8575 AM |
1661 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1662 | { | |
1663 | symtab_strtab: | |
1664 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1665 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1666 | return TRUE; | |
1667 | } | |
1668 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1669 | { | |
1670 | dynsymtab_strtab: | |
1671 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1672 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1673 | elf_elfsections (abfd)[shindex] = hdr; | |
1674 | /* We also treat this as a regular section, so that objcopy | |
1675 | can handle it. */ | |
6dc132d9 L |
1676 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1677 | shindex); | |
1b3a8575 | 1678 | } |
252b5132 | 1679 | |
1b3a8575 AM |
1680 | /* If the string table isn't one of the above, then treat it as a |
1681 | regular section. We need to scan all the headers to be sure, | |
1682 | just in case this strtab section appeared before the above. */ | |
1683 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
1684 | { | |
1685 | unsigned int i, num_sec; | |
252b5132 | 1686 | |
1b3a8575 AM |
1687 | num_sec = elf_numsections (abfd); |
1688 | for (i = 1; i < num_sec; i++) | |
1689 | { | |
1690 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1691 | if (hdr2->sh_link == shindex) | |
1692 | { | |
933d961a JJ |
1693 | /* Prevent endless recursion on broken objects. */ |
1694 | if (i == shindex) | |
1695 | return FALSE; | |
1b3a8575 AM |
1696 | if (! bfd_section_from_shdr (abfd, i)) |
1697 | return FALSE; | |
1698 | if (elf_onesymtab (abfd) == i) | |
1699 | goto symtab_strtab; | |
1700 | if (elf_dynsymtab (abfd) == i) | |
1701 | goto dynsymtab_strtab; | |
1702 | } | |
1703 | } | |
1704 | } | |
6dc132d9 | 1705 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1706 | |
1707 | case SHT_REL: | |
1708 | case SHT_RELA: | |
1709 | /* *These* do a lot of work -- but build no sections! */ | |
1710 | { | |
1711 | asection *target_sect; | |
1712 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 1713 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 1714 | |
aa2ca951 JJ |
1715 | if (hdr->sh_entsize |
1716 | != (bfd_size_type) (hdr->sh_type == SHT_REL | |
a50b2160 JJ |
1717 | ? bed->s->sizeof_rel : bed->s->sizeof_rela)) |
1718 | return FALSE; | |
1719 | ||
03ae5f59 | 1720 | /* Check for a bogus link to avoid crashing. */ |
4fbb74a6 | 1721 | if (hdr->sh_link >= num_sec) |
03ae5f59 ILT |
1722 | { |
1723 | ((*_bfd_error_handler) | |
d003868e AM |
1724 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
1725 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
1726 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1727 | shindex); | |
03ae5f59 ILT |
1728 | } |
1729 | ||
252b5132 RH |
1730 | /* For some incomprehensible reason Oracle distributes |
1731 | libraries for Solaris in which some of the objects have | |
1732 | bogus sh_link fields. It would be nice if we could just | |
1733 | reject them, but, unfortunately, some people need to use | |
1734 | them. We scan through the section headers; if we find only | |
1735 | one suitable symbol table, we clobber the sh_link to point | |
83b89087 L |
1736 | to it. I hope this doesn't break anything. |
1737 | ||
1738 | Don't do it on executable nor shared library. */ | |
1739 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0 | |
1740 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
252b5132 RH |
1741 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) |
1742 | { | |
9ad5cbcf | 1743 | unsigned int scan; |
252b5132 RH |
1744 | int found; |
1745 | ||
1746 | found = 0; | |
9ad5cbcf | 1747 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
1748 | { |
1749 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
1750 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
1751 | { | |
1752 | if (found != 0) | |
1753 | { | |
1754 | found = 0; | |
1755 | break; | |
1756 | } | |
1757 | found = scan; | |
1758 | } | |
1759 | } | |
1760 | if (found != 0) | |
1761 | hdr->sh_link = found; | |
1762 | } | |
1763 | ||
1764 | /* Get the symbol table. */ | |
1b3a8575 AM |
1765 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
1766 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 1767 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 1768 | return FALSE; |
252b5132 RH |
1769 | |
1770 | /* If this reloc section does not use the main symbol table we | |
1771 | don't treat it as a reloc section. BFD can't adequately | |
1772 | represent such a section, so at least for now, we don't | |
c044fabd | 1773 | try. We just present it as a normal section. We also |
60bcf0fa | 1774 | can't use it as a reloc section if it points to the null |
83b89087 L |
1775 | section, an invalid section, another reloc section, or its |
1776 | sh_link points to the null section. */ | |
185ef66d | 1777 | if (hdr->sh_link != elf_onesymtab (abfd) |
83b89087 | 1778 | || hdr->sh_link == SHN_UNDEF |
185ef66d | 1779 | || hdr->sh_info == SHN_UNDEF |
185ef66d AM |
1780 | || hdr->sh_info >= num_sec |
1781 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL | |
1782 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA) | |
6dc132d9 L |
1783 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1784 | shindex); | |
252b5132 RH |
1785 | |
1786 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 1787 | return FALSE; |
252b5132 RH |
1788 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
1789 | if (target_sect == NULL) | |
b34976b6 | 1790 | return FALSE; |
252b5132 RH |
1791 | |
1792 | if ((target_sect->flags & SEC_RELOC) == 0 | |
1793 | || target_sect->reloc_count == 0) | |
1794 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
1795 | else | |
1796 | { | |
dc810e39 | 1797 | bfd_size_type amt; |
252b5132 | 1798 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 1799 | amt = sizeof (*hdr2); |
a50b1753 | 1800 | hdr2 = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt); |
14b1c01e AM |
1801 | if (hdr2 == NULL) |
1802 | return FALSE; | |
252b5132 RH |
1803 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
1804 | } | |
1805 | *hdr2 = *hdr; | |
1806 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 1807 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
1808 | target_sect->flags |= SEC_RELOC; |
1809 | target_sect->relocation = NULL; | |
1810 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
1811 | /* In the section to which the relocations apply, mark whether |
1812 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 1813 | if (hdr->sh_size != 0) |
68bfbfcc | 1814 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 1815 | abfd->flags |= HAS_RELOC; |
b34976b6 | 1816 | return TRUE; |
252b5132 | 1817 | } |
252b5132 RH |
1818 | |
1819 | case SHT_GNU_verdef: | |
1820 | elf_dynverdef (abfd) = shindex; | |
1821 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 1822 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1823 | |
1824 | case SHT_GNU_versym: | |
a50b2160 JJ |
1825 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
1826 | return FALSE; | |
252b5132 RH |
1827 | elf_dynversym (abfd) = shindex; |
1828 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 1829 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1830 | |
1831 | case SHT_GNU_verneed: | |
1832 | elf_dynverref (abfd) = shindex; | |
1833 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 1834 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1835 | |
1836 | case SHT_SHLIB: | |
b34976b6 | 1837 | return TRUE; |
252b5132 | 1838 | |
dbb410c3 | 1839 | case SHT_GROUP: |
1783205a | 1840 | if (! IS_VALID_GROUP_SECTION_HEADER (hdr)) |
a50b2160 | 1841 | return FALSE; |
6dc132d9 | 1842 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1843 | return FALSE; |
dbb410c3 AM |
1844 | if (hdr->contents != NULL) |
1845 | { | |
1846 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
1783205a | 1847 | unsigned int n_elt = hdr->sh_size / GRP_ENTRY_SIZE; |
dbb410c3 AM |
1848 | asection *s; |
1849 | ||
b885599b AM |
1850 | if (idx->flags & GRP_COMDAT) |
1851 | hdr->bfd_section->flags | |
1852 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
1853 | ||
45c5e9ed L |
1854 | /* We try to keep the same section order as it comes in. */ |
1855 | idx += n_elt; | |
dbb410c3 | 1856 | while (--n_elt != 0) |
1783205a NC |
1857 | { |
1858 | --idx; | |
1859 | ||
1860 | if (idx->shdr != NULL | |
1861 | && (s = idx->shdr->bfd_section) != NULL | |
1862 | && elf_next_in_group (s) != NULL) | |
1863 | { | |
1864 | elf_next_in_group (hdr->bfd_section) = s; | |
1865 | break; | |
1866 | } | |
1867 | } | |
dbb410c3 AM |
1868 | } |
1869 | break; | |
1870 | ||
252b5132 | 1871 | default: |
104d59d1 JM |
1872 | /* Possibly an attributes section. */ |
1873 | if (hdr->sh_type == SHT_GNU_ATTRIBUTES | |
1874 | || hdr->sh_type == bed->obj_attrs_section_type) | |
1875 | { | |
1876 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
1877 | return FALSE; | |
1878 | _bfd_elf_parse_attributes (abfd, hdr); | |
1879 | return TRUE; | |
1880 | } | |
1881 | ||
252b5132 | 1882 | /* Check for any processor-specific section types. */ |
3eb70a79 L |
1883 | if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex)) |
1884 | return TRUE; | |
1885 | ||
1886 | if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER) | |
1887 | { | |
1888 | if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
1889 | /* FIXME: How to properly handle allocated section reserved | |
1890 | for applications? */ | |
1891 | (*_bfd_error_handler) | |
1892 | (_("%B: don't know how to handle allocated, application " | |
1893 | "specific section `%s' [0x%8x]"), | |
1894 | abfd, name, hdr->sh_type); | |
1895 | else | |
1896 | /* Allow sections reserved for applications. */ | |
1897 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
1898 | shindex); | |
1899 | } | |
1900 | else if (hdr->sh_type >= SHT_LOPROC | |
1901 | && hdr->sh_type <= SHT_HIPROC) | |
1902 | /* FIXME: We should handle this section. */ | |
1903 | (*_bfd_error_handler) | |
1904 | (_("%B: don't know how to handle processor specific section " | |
1905 | "`%s' [0x%8x]"), | |
1906 | abfd, name, hdr->sh_type); | |
1907 | else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS) | |
ff15b240 NC |
1908 | { |
1909 | /* Unrecognised OS-specific sections. */ | |
1910 | if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0) | |
1911 | /* SHF_OS_NONCONFORMING indicates that special knowledge is | |
08a40648 | 1912 | required to correctly process the section and the file should |
ff15b240 NC |
1913 | be rejected with an error message. */ |
1914 | (*_bfd_error_handler) | |
1915 | (_("%B: don't know how to handle OS specific section " | |
1916 | "`%s' [0x%8x]"), | |
1917 | abfd, name, hdr->sh_type); | |
1918 | else | |
1919 | /* Otherwise it should be processed. */ | |
1920 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
1921 | } | |
3eb70a79 L |
1922 | else |
1923 | /* FIXME: We should handle this section. */ | |
1924 | (*_bfd_error_handler) | |
1925 | (_("%B: don't know how to handle section `%s' [0x%8x]"), | |
1926 | abfd, name, hdr->sh_type); | |
1927 | ||
1928 | return FALSE; | |
252b5132 RH |
1929 | } |
1930 | ||
b34976b6 | 1931 | return TRUE; |
252b5132 RH |
1932 | } |
1933 | ||
87d72d41 | 1934 | /* Return the local symbol specified by ABFD, R_SYMNDX. */ |
ec338859 | 1935 | |
87d72d41 AM |
1936 | Elf_Internal_Sym * |
1937 | bfd_sym_from_r_symndx (struct sym_cache *cache, | |
1938 | bfd *abfd, | |
1939 | unsigned long r_symndx) | |
ec338859 | 1940 | { |
ec338859 AM |
1941 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
1942 | ||
a5d1b3b5 AM |
1943 | if (cache->abfd != abfd || cache->indx[ent] != r_symndx) |
1944 | { | |
1945 | Elf_Internal_Shdr *symtab_hdr; | |
1946 | unsigned char esym[sizeof (Elf64_External_Sym)]; | |
1947 | Elf_External_Sym_Shndx eshndx; | |
ec338859 | 1948 | |
a5d1b3b5 AM |
1949 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1950 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, | |
87d72d41 | 1951 | &cache->sym[ent], esym, &eshndx) == NULL) |
a5d1b3b5 | 1952 | return NULL; |
9ad5cbcf | 1953 | |
a5d1b3b5 AM |
1954 | if (cache->abfd != abfd) |
1955 | { | |
1956 | memset (cache->indx, -1, sizeof (cache->indx)); | |
1957 | cache->abfd = abfd; | |
1958 | } | |
1959 | cache->indx[ent] = r_symndx; | |
ec338859 | 1960 | } |
a5d1b3b5 | 1961 | |
87d72d41 | 1962 | return &cache->sym[ent]; |
ec338859 AM |
1963 | } |
1964 | ||
252b5132 RH |
1965 | /* Given an ELF section number, retrieve the corresponding BFD |
1966 | section. */ | |
1967 | ||
1968 | asection * | |
91d6fa6a | 1969 | bfd_section_from_elf_index (bfd *abfd, unsigned int sec_index) |
252b5132 | 1970 | { |
91d6fa6a | 1971 | if (sec_index >= elf_numsections (abfd)) |
252b5132 | 1972 | return NULL; |
91d6fa6a | 1973 | return elf_elfsections (abfd)[sec_index]->bfd_section; |
252b5132 RH |
1974 | } |
1975 | ||
b35d266b | 1976 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 1977 | { |
0112cd26 NC |
1978 | { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
1979 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1980 | }; |
1981 | ||
b35d266b | 1982 | static const struct bfd_elf_special_section special_sections_c[] = |
7f4d3958 | 1983 | { |
0112cd26 NC |
1984 | { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 }, |
1985 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1986 | }; |
1987 | ||
b35d266b | 1988 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 1989 | { |
0112cd26 NC |
1990 | { STRING_COMMA_LEN (".data"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1991 | { STRING_COMMA_LEN (".data1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
1992 | { STRING_COMMA_LEN (".debug"), 0, SHT_PROGBITS, 0 }, | |
1993 | { STRING_COMMA_LEN (".debug_line"), 0, SHT_PROGBITS, 0 }, | |
1994 | { STRING_COMMA_LEN (".debug_info"), 0, SHT_PROGBITS, 0 }, | |
1995 | { STRING_COMMA_LEN (".debug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
1996 | { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 }, | |
1997 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, SHF_ALLOC }, | |
1998 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, SHF_ALLOC }, | |
1999 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, SHF_ALLOC }, | |
2000 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2001 | }; |
2002 | ||
b35d266b | 2003 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 | 2004 | { |
0112cd26 NC |
2005 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2006 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2007 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2008 | }; |
2009 | ||
b35d266b | 2010 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 | 2011 | { |
0112cd26 NC |
2012 | { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2013 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2014 | { STRING_COMMA_LEN (".gnu.version"), 0, SHT_GNU_versym, 0 }, | |
2015 | { STRING_COMMA_LEN (".gnu.version_d"), 0, SHT_GNU_verdef, 0 }, | |
2016 | { STRING_COMMA_LEN (".gnu.version_r"), 0, SHT_GNU_verneed, 0 }, | |
2017 | { STRING_COMMA_LEN (".gnu.liblist"), 0, SHT_GNU_LIBLIST, SHF_ALLOC }, | |
2018 | { STRING_COMMA_LEN (".gnu.conflict"), 0, SHT_RELA, SHF_ALLOC }, | |
2019 | { STRING_COMMA_LEN (".gnu.hash"), 0, SHT_GNU_HASH, SHF_ALLOC }, | |
2020 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2021 | }; |
2022 | ||
b35d266b | 2023 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 | 2024 | { |
0112cd26 NC |
2025 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, SHF_ALLOC }, |
2026 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2027 | }; |
2028 | ||
b35d266b | 2029 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 | 2030 | { |
0112cd26 NC |
2031 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2032 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2033 | { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 }, | |
2034 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2035 | }; |
2036 | ||
b35d266b | 2037 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 | 2038 | { |
0112cd26 NC |
2039 | { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 }, |
2040 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2041 | }; |
2042 | ||
b35d266b | 2043 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2044 | { |
0112cd26 NC |
2045 | { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 }, |
2046 | { STRING_COMMA_LEN (".note"), -1, SHT_NOTE, 0 }, | |
2047 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2048 | }; |
2049 | ||
b35d266b | 2050 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 | 2051 | { |
0112cd26 NC |
2052 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, |
2053 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2054 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2055 | }; |
2056 | ||
b35d266b | 2057 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 | 2058 | { |
0112cd26 NC |
2059 | { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC }, |
2060 | { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2061 | { STRING_COMMA_LEN (".rela"), -1, SHT_RELA, 0 }, | |
2062 | { STRING_COMMA_LEN (".rel"), -1, SHT_REL, 0 }, | |
2063 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2064 | }; |
2065 | ||
b35d266b | 2066 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 | 2067 | { |
0112cd26 NC |
2068 | { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 }, |
2069 | { STRING_COMMA_LEN (".strtab"), 0, SHT_STRTAB, 0 }, | |
2070 | { STRING_COMMA_LEN (".symtab"), 0, SHT_SYMTAB, 0 }, | |
60ff4dc4 HPN |
2071 | /* See struct bfd_elf_special_section declaration for the semantics of |
2072 | this special case where .prefix_length != strlen (.prefix). */ | |
2073 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
0112cd26 | 2074 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
2075 | }; |
2076 | ||
b35d266b | 2077 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 | 2078 | { |
0112cd26 NC |
2079 | { STRING_COMMA_LEN (".text"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2080 | { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2081 | { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2082 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2083 | }; |
2084 | ||
1b315056 CS |
2085 | static const struct bfd_elf_special_section special_sections_z[] = |
2086 | { | |
2087 | { STRING_COMMA_LEN (".zdebug_line"), 0, SHT_PROGBITS, 0 }, | |
2088 | { STRING_COMMA_LEN (".zdebug_info"), 0, SHT_PROGBITS, 0 }, | |
2089 | { STRING_COMMA_LEN (".zdebug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
2090 | { STRING_COMMA_LEN (".zdebug_aranges"), 0, SHT_PROGBITS, 0 }, | |
2091 | { NULL, 0, 0, 0, 0 } | |
2092 | }; | |
2093 | ||
b35d266b | 2094 | static const struct bfd_elf_special_section *special_sections[] = |
7f4d3958 | 2095 | { |
7f4d3958 | 2096 | special_sections_b, /* 'b' */ |
98ece1b3 | 2097 | special_sections_c, /* 'c' */ |
7f4d3958 L |
2098 | special_sections_d, /* 'd' */ |
2099 | NULL, /* 'e' */ | |
2100 | special_sections_f, /* 'f' */ | |
2101 | special_sections_g, /* 'g' */ | |
2102 | special_sections_h, /* 'h' */ | |
2103 | special_sections_i, /* 'i' */ | |
2104 | NULL, /* 'j' */ | |
2105 | NULL, /* 'k' */ | |
2106 | special_sections_l, /* 'l' */ | |
2107 | NULL, /* 'm' */ | |
2108 | special_sections_n, /* 'n' */ | |
2109 | NULL, /* 'o' */ | |
2110 | special_sections_p, /* 'p' */ | |
2111 | NULL, /* 'q' */ | |
2112 | special_sections_r, /* 'r' */ | |
2113 | special_sections_s, /* 's' */ | |
2114 | special_sections_t, /* 't' */ | |
1b315056 CS |
2115 | NULL, /* 'u' */ |
2116 | NULL, /* 'v' */ | |
2117 | NULL, /* 'w' */ | |
2118 | NULL, /* 'x' */ | |
2119 | NULL, /* 'y' */ | |
2120 | special_sections_z /* 'z' */ | |
7f4d3958 L |
2121 | }; |
2122 | ||
551b43fd AM |
2123 | const struct bfd_elf_special_section * |
2124 | _bfd_elf_get_special_section (const char *name, | |
2125 | const struct bfd_elf_special_section *spec, | |
2126 | unsigned int rela) | |
2f89ff8d L |
2127 | { |
2128 | int i; | |
7f4d3958 | 2129 | int len; |
7f4d3958 | 2130 | |
551b43fd | 2131 | len = strlen (name); |
7f4d3958 | 2132 | |
551b43fd | 2133 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2134 | { |
2135 | int suffix_len; | |
551b43fd | 2136 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2137 | |
2138 | if (len < prefix_len) | |
2139 | continue; | |
551b43fd | 2140 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2141 | continue; |
2142 | ||
551b43fd | 2143 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2144 | if (suffix_len <= 0) |
2145 | { | |
2146 | if (name[prefix_len] != 0) | |
2147 | { | |
2148 | if (suffix_len == 0) | |
2149 | continue; | |
2150 | if (name[prefix_len] != '.' | |
2151 | && (suffix_len == -2 | |
551b43fd | 2152 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2153 | continue; |
2154 | } | |
2155 | } | |
2156 | else | |
2157 | { | |
2158 | if (len < prefix_len + suffix_len) | |
2159 | continue; | |
2160 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2161 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2162 | suffix_len) != 0) |
2163 | continue; | |
2164 | } | |
551b43fd | 2165 | return &spec[i]; |
7dcb9820 | 2166 | } |
2f89ff8d L |
2167 | |
2168 | return NULL; | |
2169 | } | |
2170 | ||
7dcb9820 | 2171 | const struct bfd_elf_special_section * |
29ef7005 | 2172 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2173 | { |
551b43fd AM |
2174 | int i; |
2175 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2176 | const struct elf_backend_data *bed; |
2f89ff8d L |
2177 | |
2178 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2179 | if (sec->name == NULL) |
2180 | return NULL; | |
2f89ff8d | 2181 | |
29ef7005 L |
2182 | bed = get_elf_backend_data (abfd); |
2183 | spec = bed->special_sections; | |
2184 | if (spec) | |
2185 | { | |
2186 | spec = _bfd_elf_get_special_section (sec->name, | |
2187 | bed->special_sections, | |
2188 | sec->use_rela_p); | |
2189 | if (spec != NULL) | |
2190 | return spec; | |
2191 | } | |
2192 | ||
551b43fd AM |
2193 | if (sec->name[0] != '.') |
2194 | return NULL; | |
2f89ff8d | 2195 | |
551b43fd | 2196 | i = sec->name[1] - 'b'; |
1b315056 | 2197 | if (i < 0 || i > 'z' - 'b') |
551b43fd AM |
2198 | return NULL; |
2199 | ||
2200 | spec = special_sections[i]; | |
2f89ff8d | 2201 | |
551b43fd AM |
2202 | if (spec == NULL) |
2203 | return NULL; | |
2204 | ||
2205 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2206 | } |
2207 | ||
b34976b6 | 2208 | bfd_boolean |
217aa764 | 2209 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2210 | { |
2211 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2212 | const struct elf_backend_data *bed; |
7dcb9820 | 2213 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2214 | |
f0abc2a1 AM |
2215 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2216 | if (sdata == NULL) | |
2217 | { | |
a50b1753 NC |
2218 | sdata = (struct bfd_elf_section_data *) bfd_zalloc (abfd, |
2219 | sizeof (*sdata)); | |
f0abc2a1 AM |
2220 | if (sdata == NULL) |
2221 | return FALSE; | |
217aa764 | 2222 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2223 | } |
bf572ba0 | 2224 | |
551b43fd AM |
2225 | /* Indicate whether or not this section should use RELA relocations. */ |
2226 | bed = get_elf_backend_data (abfd); | |
2227 | sec->use_rela_p = bed->default_use_rela_p; | |
2228 | ||
e843e0f8 L |
2229 | /* When we read a file, we don't need to set ELF section type and |
2230 | flags. They will be overridden in _bfd_elf_make_section_from_shdr | |
2231 | anyway. We will set ELF section type and flags for all linker | |
2232 | created sections. If user specifies BFD section flags, we will | |
2233 | set ELF section type and flags based on BFD section flags in | |
2234 | elf_fake_sections. */ | |
2235 | if ((!sec->flags && abfd->direction != read_direction) | |
3496cb2a | 2236 | || (sec->flags & SEC_LINKER_CREATED) != 0) |
2f89ff8d | 2237 | { |
551b43fd | 2238 | ssect = (*bed->get_sec_type_attr) (abfd, sec); |
a31501e9 L |
2239 | if (ssect != NULL) |
2240 | { | |
2241 | elf_section_type (sec) = ssect->type; | |
2242 | elf_section_flags (sec) = ssect->attr; | |
2243 | } | |
2f89ff8d L |
2244 | } |
2245 | ||
f592407e | 2246 | return _bfd_generic_new_section_hook (abfd, sec); |
252b5132 RH |
2247 | } |
2248 | ||
2249 | /* Create a new bfd section from an ELF program header. | |
2250 | ||
2251 | Since program segments have no names, we generate a synthetic name | |
2252 | of the form segment<NUM>, where NUM is generally the index in the | |
2253 | program header table. For segments that are split (see below) we | |
2254 | generate the names segment<NUM>a and segment<NUM>b. | |
2255 | ||
2256 | Note that some program segments may have a file size that is different than | |
2257 | (less than) the memory size. All this means is that at execution the | |
2258 | system must allocate the amount of memory specified by the memory size, | |
2259 | but only initialize it with the first "file size" bytes read from the | |
2260 | file. This would occur for example, with program segments consisting | |
2261 | of combined data+bss. | |
2262 | ||
2263 | To handle the above situation, this routine generates TWO bfd sections | |
2264 | for the single program segment. The first has the length specified by | |
2265 | the file size of the segment, and the second has the length specified | |
2266 | by the difference between the two sizes. In effect, the segment is split | |
d5191d0c | 2267 | into its initialized and uninitialized parts. |
252b5132 RH |
2268 | |
2269 | */ | |
2270 | ||
b34976b6 | 2271 | bfd_boolean |
217aa764 AM |
2272 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2273 | Elf_Internal_Phdr *hdr, | |
91d6fa6a | 2274 | int hdr_index, |
a50b1753 | 2275 | const char *type_name) |
252b5132 RH |
2276 | { |
2277 | asection *newsect; | |
2278 | char *name; | |
2279 | char namebuf[64]; | |
d4c88bbb | 2280 | size_t len; |
252b5132 RH |
2281 | int split; |
2282 | ||
2283 | split = ((hdr->p_memsz > 0) | |
2284 | && (hdr->p_filesz > 0) | |
2285 | && (hdr->p_memsz > hdr->p_filesz)); | |
d5191d0c AM |
2286 | |
2287 | if (hdr->p_filesz > 0) | |
252b5132 | 2288 | { |
91d6fa6a | 2289 | sprintf (namebuf, "%s%d%s", type_name, hdr_index, split ? "a" : ""); |
d5191d0c | 2290 | len = strlen (namebuf) + 1; |
a50b1753 | 2291 | name = (char *) bfd_alloc (abfd, len); |
d5191d0c AM |
2292 | if (!name) |
2293 | return FALSE; | |
2294 | memcpy (name, namebuf, len); | |
2295 | newsect = bfd_make_section (abfd, name); | |
2296 | if (newsect == NULL) | |
2297 | return FALSE; | |
2298 | newsect->vma = hdr->p_vaddr; | |
2299 | newsect->lma = hdr->p_paddr; | |
2300 | newsect->size = hdr->p_filesz; | |
2301 | newsect->filepos = hdr->p_offset; | |
2302 | newsect->flags |= SEC_HAS_CONTENTS; | |
2303 | newsect->alignment_power = bfd_log2 (hdr->p_align); | |
2304 | if (hdr->p_type == PT_LOAD) | |
252b5132 | 2305 | { |
d5191d0c AM |
2306 | newsect->flags |= SEC_ALLOC; |
2307 | newsect->flags |= SEC_LOAD; | |
2308 | if (hdr->p_flags & PF_X) | |
2309 | { | |
2310 | /* FIXME: all we known is that it has execute PERMISSION, | |
2311 | may be data. */ | |
2312 | newsect->flags |= SEC_CODE; | |
2313 | } | |
2314 | } | |
2315 | if (!(hdr->p_flags & PF_W)) | |
2316 | { | |
2317 | newsect->flags |= SEC_READONLY; | |
252b5132 | 2318 | } |
252b5132 RH |
2319 | } |
2320 | ||
d5191d0c | 2321 | if (hdr->p_memsz > hdr->p_filesz) |
252b5132 | 2322 | { |
d5191d0c AM |
2323 | bfd_vma align; |
2324 | ||
91d6fa6a | 2325 | sprintf (namebuf, "%s%d%s", type_name, hdr_index, split ? "b" : ""); |
d4c88bbb | 2326 | len = strlen (namebuf) + 1; |
a50b1753 | 2327 | name = (char *) bfd_alloc (abfd, len); |
252b5132 | 2328 | if (!name) |
b34976b6 | 2329 | return FALSE; |
d4c88bbb | 2330 | memcpy (name, namebuf, len); |
252b5132 RH |
2331 | newsect = bfd_make_section (abfd, name); |
2332 | if (newsect == NULL) | |
b34976b6 | 2333 | return FALSE; |
252b5132 RH |
2334 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2335 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2336 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
d5191d0c AM |
2337 | newsect->filepos = hdr->p_offset + hdr->p_filesz; |
2338 | align = newsect->vma & -newsect->vma; | |
2339 | if (align == 0 || align > hdr->p_align) | |
2340 | align = hdr->p_align; | |
2341 | newsect->alignment_power = bfd_log2 (align); | |
252b5132 RH |
2342 | if (hdr->p_type == PT_LOAD) |
2343 | { | |
d5191d0c AM |
2344 | /* Hack for gdb. Segments that have not been modified do |
2345 | not have their contents written to a core file, on the | |
2346 | assumption that a debugger can find the contents in the | |
2347 | executable. We flag this case by setting the fake | |
2348 | section size to zero. Note that "real" bss sections will | |
2349 | always have their contents dumped to the core file. */ | |
2350 | if (bfd_get_format (abfd) == bfd_core) | |
2351 | newsect->size = 0; | |
252b5132 RH |
2352 | newsect->flags |= SEC_ALLOC; |
2353 | if (hdr->p_flags & PF_X) | |
2354 | newsect->flags |= SEC_CODE; | |
2355 | } | |
2356 | if (!(hdr->p_flags & PF_W)) | |
2357 | newsect->flags |= SEC_READONLY; | |
2358 | } | |
2359 | ||
b34976b6 | 2360 | return TRUE; |
252b5132 RH |
2361 | } |
2362 | ||
b34976b6 | 2363 | bfd_boolean |
91d6fa6a | 2364 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int hdr_index) |
20cfcaae | 2365 | { |
9c5bfbb7 | 2366 | const struct elf_backend_data *bed; |
20cfcaae NC |
2367 | |
2368 | switch (hdr->p_type) | |
2369 | { | |
2370 | case PT_NULL: | |
91d6fa6a | 2371 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "null"); |
20cfcaae NC |
2372 | |
2373 | case PT_LOAD: | |
91d6fa6a | 2374 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "load"); |
20cfcaae NC |
2375 | |
2376 | case PT_DYNAMIC: | |
91d6fa6a | 2377 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "dynamic"); |
20cfcaae NC |
2378 | |
2379 | case PT_INTERP: | |
91d6fa6a | 2380 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "interp"); |
20cfcaae NC |
2381 | |
2382 | case PT_NOTE: | |
91d6fa6a | 2383 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "note")) |
b34976b6 | 2384 | return FALSE; |
718175fa | 2385 | if (! elf_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2386 | return FALSE; |
2387 | return TRUE; | |
20cfcaae NC |
2388 | |
2389 | case PT_SHLIB: | |
91d6fa6a | 2390 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "shlib"); |
20cfcaae NC |
2391 | |
2392 | case PT_PHDR: | |
91d6fa6a | 2393 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "phdr"); |
20cfcaae | 2394 | |
811072d8 | 2395 | case PT_GNU_EH_FRAME: |
91d6fa6a | 2396 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, |
811072d8 RM |
2397 | "eh_frame_hdr"); |
2398 | ||
2b05f1b7 | 2399 | case PT_GNU_STACK: |
91d6fa6a | 2400 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "stack"); |
9ee5e499 | 2401 | |
8c37241b | 2402 | case PT_GNU_RELRO: |
91d6fa6a | 2403 | return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "relro"); |
8c37241b | 2404 | |
20cfcaae | 2405 | default: |
8c1acd09 | 2406 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2407 | bed = get_elf_backend_data (abfd); |
91d6fa6a | 2408 | return bed->elf_backend_section_from_phdr (abfd, hdr, hdr_index, "proc"); |
20cfcaae NC |
2409 | } |
2410 | } | |
2411 | ||
23bc299b | 2412 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2413 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2414 | relocations; otherwise, we use REL relocations. */ |
2415 | ||
b34976b6 | 2416 | bfd_boolean |
217aa764 AM |
2417 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2418 | Elf_Internal_Shdr *rel_hdr, | |
2419 | asection *asect, | |
2420 | bfd_boolean use_rela_p) | |
23bc299b MM |
2421 | { |
2422 | char *name; | |
9c5bfbb7 | 2423 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2424 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2425 | |
a50b1753 | 2426 | name = (char *) bfd_alloc (abfd, amt); |
23bc299b | 2427 | if (name == NULL) |
b34976b6 | 2428 | return FALSE; |
23bc299b MM |
2429 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2430 | rel_hdr->sh_name = | |
2b0f7ef9 | 2431 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2432 | FALSE); |
23bc299b | 2433 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2434 | return FALSE; |
23bc299b MM |
2435 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2436 | rel_hdr->sh_entsize = (use_rela_p | |
2437 | ? bed->s->sizeof_rela | |
2438 | : bed->s->sizeof_rel); | |
72de5009 | 2439 | rel_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align; |
23bc299b MM |
2440 | rel_hdr->sh_flags = 0; |
2441 | rel_hdr->sh_addr = 0; | |
2442 | rel_hdr->sh_size = 0; | |
2443 | rel_hdr->sh_offset = 0; | |
2444 | ||
b34976b6 | 2445 | return TRUE; |
23bc299b MM |
2446 | } |
2447 | ||
94be91de JB |
2448 | /* Return the default section type based on the passed in section flags. */ |
2449 | ||
2450 | int | |
2451 | bfd_elf_get_default_section_type (flagword flags) | |
2452 | { | |
2453 | if ((flags & SEC_ALLOC) != 0 | |
2454 | && ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0 | |
2455 | || (flags & SEC_NEVER_LOAD) != 0)) | |
2456 | return SHT_NOBITS; | |
2457 | return SHT_PROGBITS; | |
2458 | } | |
2459 | ||
252b5132 RH |
2460 | /* Set up an ELF internal section header for a section. */ |
2461 | ||
252b5132 | 2462 | static void |
217aa764 | 2463 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2464 | { |
9c5bfbb7 | 2465 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
a50b1753 | 2466 | bfd_boolean *failedptr = (bfd_boolean *) failedptrarg; |
252b5132 | 2467 | Elf_Internal_Shdr *this_hdr; |
0414f35b | 2468 | unsigned int sh_type; |
252b5132 RH |
2469 | |
2470 | if (*failedptr) | |
2471 | { | |
2472 | /* We already failed; just get out of the bfd_map_over_sections | |
08a40648 | 2473 | loop. */ |
252b5132 RH |
2474 | return; |
2475 | } | |
2476 | ||
2477 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2478 | ||
e57b5356 AM |
2479 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2480 | asect->name, FALSE); | |
2481 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2482 | { |
b34976b6 | 2483 | *failedptr = TRUE; |
252b5132 RH |
2484 | return; |
2485 | } | |
2486 | ||
a4d8e49b | 2487 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
2488 | |
2489 | if ((asect->flags & SEC_ALLOC) != 0 | |
2490 | || asect->user_set_vma) | |
2491 | this_hdr->sh_addr = asect->vma; | |
2492 | else | |
2493 | this_hdr->sh_addr = 0; | |
2494 | ||
2495 | this_hdr->sh_offset = 0; | |
eea6121a | 2496 | this_hdr->sh_size = asect->size; |
252b5132 | 2497 | this_hdr->sh_link = 0; |
72de5009 | 2498 | this_hdr->sh_addralign = (bfd_vma) 1 << asect->alignment_power; |
252b5132 RH |
2499 | /* The sh_entsize and sh_info fields may have been set already by |
2500 | copy_private_section_data. */ | |
2501 | ||
2502 | this_hdr->bfd_section = asect; | |
2503 | this_hdr->contents = NULL; | |
2504 | ||
3cddba1e L |
2505 | /* If the section type is unspecified, we set it based on |
2506 | asect->flags. */ | |
98ece1b3 AM |
2507 | if ((asect->flags & SEC_GROUP) != 0) |
2508 | sh_type = SHT_GROUP; | |
98ece1b3 | 2509 | else |
94be91de | 2510 | sh_type = bfd_elf_get_default_section_type (asect->flags); |
98ece1b3 | 2511 | |
3cddba1e | 2512 | if (this_hdr->sh_type == SHT_NULL) |
98ece1b3 AM |
2513 | this_hdr->sh_type = sh_type; |
2514 | else if (this_hdr->sh_type == SHT_NOBITS | |
2515 | && sh_type == SHT_PROGBITS | |
2516 | && (asect->flags & SEC_ALLOC) != 0) | |
3cddba1e | 2517 | { |
98ece1b3 AM |
2518 | /* Warn if we are changing a NOBITS section to PROGBITS, but |
2519 | allow the link to proceed. This can happen when users link | |
2520 | non-bss input sections to bss output sections, or emit data | |
2521 | to a bss output section via a linker script. */ | |
2522 | (*_bfd_error_handler) | |
58f0869b | 2523 | (_("warning: section `%A' type changed to PROGBITS"), asect); |
98ece1b3 | 2524 | this_hdr->sh_type = sh_type; |
3cddba1e L |
2525 | } |
2526 | ||
2f89ff8d | 2527 | switch (this_hdr->sh_type) |
252b5132 | 2528 | { |
2f89ff8d | 2529 | default: |
2f89ff8d L |
2530 | break; |
2531 | ||
2532 | case SHT_STRTAB: | |
2533 | case SHT_INIT_ARRAY: | |
2534 | case SHT_FINI_ARRAY: | |
2535 | case SHT_PREINIT_ARRAY: | |
2536 | case SHT_NOTE: | |
2537 | case SHT_NOBITS: | |
2538 | case SHT_PROGBITS: | |
2539 | break; | |
2540 | ||
2541 | case SHT_HASH: | |
c7ac6ff8 | 2542 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2543 | break; |
5de3bf90 | 2544 | |
2f89ff8d | 2545 | case SHT_DYNSYM: |
252b5132 | 2546 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2547 | break; |
2548 | ||
2549 | case SHT_DYNAMIC: | |
252b5132 | 2550 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2551 | break; |
2552 | ||
2553 | case SHT_RELA: | |
2554 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2555 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2556 | break; | |
2557 | ||
2558 | case SHT_REL: | |
2559 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2560 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2561 | break; | |
2562 | ||
2563 | case SHT_GNU_versym: | |
252b5132 | 2564 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2565 | break; |
2566 | ||
2567 | case SHT_GNU_verdef: | |
252b5132 RH |
2568 | this_hdr->sh_entsize = 0; |
2569 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2570 | cverdefs. The linker will set cverdefs, but sh_info will be |
2571 | zero. */ | |
252b5132 RH |
2572 | if (this_hdr->sh_info == 0) |
2573 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2574 | else | |
2575 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2576 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2577 | break; |
2578 | ||
2579 | case SHT_GNU_verneed: | |
252b5132 RH |
2580 | this_hdr->sh_entsize = 0; |
2581 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2582 | cverrefs. The linker will set cverrefs, but sh_info will be |
2583 | zero. */ | |
252b5132 RH |
2584 | if (this_hdr->sh_info == 0) |
2585 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2586 | else | |
2587 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2588 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2589 | break; |
2590 | ||
2591 | case SHT_GROUP: | |
1783205a | 2592 | this_hdr->sh_entsize = GRP_ENTRY_SIZE; |
2f89ff8d | 2593 | break; |
fdc90cb4 JJ |
2594 | |
2595 | case SHT_GNU_HASH: | |
2596 | this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4; | |
2597 | break; | |
dbb410c3 | 2598 | } |
252b5132 RH |
2599 | |
2600 | if ((asect->flags & SEC_ALLOC) != 0) | |
2601 | this_hdr->sh_flags |= SHF_ALLOC; | |
2602 | if ((asect->flags & SEC_READONLY) == 0) | |
2603 | this_hdr->sh_flags |= SHF_WRITE; | |
2604 | if ((asect->flags & SEC_CODE) != 0) | |
2605 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2606 | if ((asect->flags & SEC_MERGE) != 0) |
2607 | { | |
2608 | this_hdr->sh_flags |= SHF_MERGE; | |
2609 | this_hdr->sh_entsize = asect->entsize; | |
2610 | if ((asect->flags & SEC_STRINGS) != 0) | |
2611 | this_hdr->sh_flags |= SHF_STRINGS; | |
2612 | } | |
1126897b | 2613 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2614 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2615 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2616 | { |
2617 | this_hdr->sh_flags |= SHF_TLS; | |
3a800eb9 AM |
2618 | if (asect->size == 0 |
2619 | && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
704afa60 | 2620 | { |
3a800eb9 | 2621 | struct bfd_link_order *o = asect->map_tail.link_order; |
b34976b6 | 2622 | |
704afa60 | 2623 | this_hdr->sh_size = 0; |
3a800eb9 AM |
2624 | if (o != NULL) |
2625 | { | |
704afa60 | 2626 | this_hdr->sh_size = o->offset + o->size; |
3a800eb9 AM |
2627 | if (this_hdr->sh_size != 0) |
2628 | this_hdr->sh_type = SHT_NOBITS; | |
2629 | } | |
704afa60 JJ |
2630 | } |
2631 | } | |
18ae9cc1 L |
2632 | if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE) |
2633 | this_hdr->sh_flags |= SHF_EXCLUDE; | |
252b5132 RH |
2634 | |
2635 | /* Check for processor-specific section types. */ | |
0414f35b | 2636 | sh_type = this_hdr->sh_type; |
e1fddb6b AO |
2637 | if (bed->elf_backend_fake_sections |
2638 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2639 | *failedptr = TRUE; |
252b5132 | 2640 | |
42bb2e33 | 2641 | if (sh_type == SHT_NOBITS && asect->size != 0) |
0414f35b AM |
2642 | { |
2643 | /* Don't change the header type from NOBITS if we are being | |
42bb2e33 | 2644 | called for objcopy --only-keep-debug. */ |
0414f35b AM |
2645 | this_hdr->sh_type = sh_type; |
2646 | } | |
2647 | ||
252b5132 | 2648 | /* If the section has relocs, set up a section header for the |
23bc299b MM |
2649 | SHT_REL[A] section. If two relocation sections are required for |
2650 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2651 | create the other. */ |
23bc299b | 2652 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2653 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2654 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2655 | asect, |
68bfbfcc | 2656 | asect->use_rela_p)) |
b34976b6 | 2657 | *failedptr = TRUE; |
252b5132 RH |
2658 | } |
2659 | ||
bcacc0f5 AM |
2660 | /* Fill in the contents of a SHT_GROUP section. Called from |
2661 | _bfd_elf_compute_section_file_positions for gas, objcopy, and | |
2662 | when ELF targets use the generic linker, ld. Called for ld -r | |
2663 | from bfd_elf_final_link. */ | |
dbb410c3 | 2664 | |
1126897b | 2665 | void |
217aa764 | 2666 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2667 | { |
a50b1753 | 2668 | bfd_boolean *failedptr = (bfd_boolean *) failedptrarg; |
9dce4196 | 2669 | asection *elt, *first; |
dbb410c3 | 2670 | unsigned char *loc; |
b34976b6 | 2671 | bfd_boolean gas; |
dbb410c3 | 2672 | |
7e4111ad L |
2673 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2674 | elfxx-ia64.c. */ | |
2675 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2676 | || *failedptr) |
2677 | return; | |
2678 | ||
bcacc0f5 AM |
2679 | if (elf_section_data (sec)->this_hdr.sh_info == 0) |
2680 | { | |
2681 | unsigned long symindx = 0; | |
2682 | ||
2683 | /* elf_group_id will have been set up by objcopy and the | |
2684 | generic linker. */ | |
2685 | if (elf_group_id (sec) != NULL) | |
2686 | symindx = elf_group_id (sec)->udata.i; | |
1126897b | 2687 | |
bcacc0f5 AM |
2688 | if (symindx == 0) |
2689 | { | |
2690 | /* If called from the assembler, swap_out_syms will have set up | |
2691 | elf_section_syms. */ | |
2692 | BFD_ASSERT (elf_section_syms (abfd) != NULL); | |
2693 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2694 | } | |
2695 | elf_section_data (sec)->this_hdr.sh_info = symindx; | |
2696 | } | |
2697 | else if (elf_section_data (sec)->this_hdr.sh_info == (unsigned int) -2) | |
1126897b | 2698 | { |
bcacc0f5 AM |
2699 | /* The ELF backend linker sets sh_info to -2 when the group |
2700 | signature symbol is global, and thus the index can't be | |
2701 | set until all local symbols are output. */ | |
2702 | asection *igroup = elf_sec_group (elf_next_in_group (sec)); | |
2703 | struct bfd_elf_section_data *sec_data = elf_section_data (igroup); | |
2704 | unsigned long symndx = sec_data->this_hdr.sh_info; | |
2705 | unsigned long extsymoff = 0; | |
2706 | struct elf_link_hash_entry *h; | |
2707 | ||
2708 | if (!elf_bad_symtab (igroup->owner)) | |
2709 | { | |
2710 | Elf_Internal_Shdr *symtab_hdr; | |
2711 | ||
2712 | symtab_hdr = &elf_tdata (igroup->owner)->symtab_hdr; | |
2713 | extsymoff = symtab_hdr->sh_info; | |
2714 | } | |
2715 | h = elf_sym_hashes (igroup->owner)[symndx - extsymoff]; | |
2716 | while (h->root.type == bfd_link_hash_indirect | |
2717 | || h->root.type == bfd_link_hash_warning) | |
2718 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2719 | ||
2720 | elf_section_data (sec)->this_hdr.sh_info = h->indx; | |
1126897b | 2721 | } |
dbb410c3 | 2722 | |
1126897b | 2723 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2724 | gas = TRUE; |
dbb410c3 AM |
2725 | if (sec->contents == NULL) |
2726 | { | |
b34976b6 | 2727 | gas = FALSE; |
a50b1753 | 2728 | sec->contents = (unsigned char *) bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2729 | |
2730 | /* Arrange for the section to be written out. */ | |
2731 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2732 | if (sec->contents == NULL) |
2733 | { | |
b34976b6 | 2734 | *failedptr = TRUE; |
dbb410c3 AM |
2735 | return; |
2736 | } | |
2737 | } | |
2738 | ||
eea6121a | 2739 | loc = sec->contents + sec->size; |
dbb410c3 | 2740 | |
9dce4196 AM |
2741 | /* Get the pointer to the first section in the group that gas |
2742 | squirreled away here. objcopy arranges for this to be set to the | |
2743 | start of the input section group. */ | |
2744 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2745 | |
2746 | /* First element is a flag word. Rest of section is elf section | |
2747 | indices for all the sections of the group. Write them backwards | |
2748 | just to keep the group in the same order as given in .section | |
2749 | directives, not that it matters. */ | |
2750 | while (elt != NULL) | |
2751 | { | |
9dce4196 | 2752 | asection *s; |
9dce4196 | 2753 | |
9dce4196 | 2754 | s = elt; |
415f38a6 AM |
2755 | if (!gas) |
2756 | s = s->output_section; | |
2757 | if (s != NULL | |
2758 | && !bfd_is_abs_section (s)) | |
01e1a5bc | 2759 | { |
415f38a6 AM |
2760 | unsigned int idx = elf_section_data (s)->this_idx; |
2761 | ||
01e1a5bc | 2762 | loc -= 4; |
01e1a5bc NC |
2763 | H_PUT_32 (abfd, idx, loc); |
2764 | } | |
945906ff | 2765 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2766 | if (elt == first) |
2767 | break; | |
dbb410c3 AM |
2768 | } |
2769 | ||
3d7f7666 | 2770 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2771 | abort (); |
dbb410c3 | 2772 | |
9dce4196 | 2773 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2774 | } |
2775 | ||
252b5132 RH |
2776 | /* Assign all ELF section numbers. The dummy first section is handled here |
2777 | too. The link/info pointers for the standard section types are filled | |
2778 | in here too, while we're at it. */ | |
2779 | ||
b34976b6 | 2780 | static bfd_boolean |
da9f89d4 | 2781 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2782 | { |
2783 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2784 | asection *sec; | |
2b0f7ef9 | 2785 | unsigned int section_number, secn; |
252b5132 | 2786 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 2787 | struct bfd_elf_section_data *d; |
3516e984 | 2788 | bfd_boolean need_symtab; |
252b5132 RH |
2789 | |
2790 | section_number = 1; | |
2791 | ||
2b0f7ef9 JJ |
2792 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2793 | ||
da9f89d4 L |
2794 | /* SHT_GROUP sections are in relocatable files only. */ |
2795 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2796 | { |
da9f89d4 | 2797 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 2798 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 2799 | { |
5daa8fe7 | 2800 | d = elf_section_data (sec); |
da9f89d4 L |
2801 | |
2802 | if (d->this_hdr.sh_type == SHT_GROUP) | |
08a40648 | 2803 | { |
5daa8fe7 | 2804 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
2805 | { |
2806 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 2807 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 2808 | abfd->section_count--; |
da9f89d4 | 2809 | } |
08a40648 | 2810 | else |
4fbb74a6 | 2811 | d->this_idx = section_number++; |
da9f89d4 | 2812 | } |
47cc2cf5 PB |
2813 | } |
2814 | } | |
2815 | ||
2816 | for (sec = abfd->sections; sec; sec = sec->next) | |
2817 | { | |
2818 | d = elf_section_data (sec); | |
2819 | ||
2820 | if (d->this_hdr.sh_type != SHT_GROUP) | |
4fbb74a6 | 2821 | d->this_idx = section_number++; |
2b0f7ef9 | 2822 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
2823 | if ((sec->flags & SEC_RELOC) == 0) |
2824 | d->rel_idx = 0; | |
2825 | else | |
2b0f7ef9 JJ |
2826 | { |
2827 | d->rel_idx = section_number++; | |
2828 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
2829 | } | |
23bc299b MM |
2830 | |
2831 | if (d->rel_hdr2) | |
2b0f7ef9 JJ |
2832 | { |
2833 | d->rel_idx2 = section_number++; | |
2834 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
2835 | } | |
23bc299b MM |
2836 | else |
2837 | d->rel_idx2 = 0; | |
252b5132 RH |
2838 | } |
2839 | ||
2840 | t->shstrtab_section = section_number++; | |
2b0f7ef9 | 2841 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2842 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 | 2843 | |
3516e984 L |
2844 | need_symtab = (bfd_get_symcount (abfd) > 0 |
2845 | || (link_info == NULL | |
2846 | && ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC)) | |
2847 | == HAS_RELOC))); | |
2848 | if (need_symtab) | |
252b5132 RH |
2849 | { |
2850 | t->symtab_section = section_number++; | |
2b0f7ef9 | 2851 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
4fbb74a6 | 2852 | if (section_number > ((SHN_LORESERVE - 2) & 0xFFFF)) |
9ad5cbcf | 2853 | { |
9ad5cbcf AM |
2854 | t->symtab_shndx_section = section_number++; |
2855 | t->symtab_shndx_hdr.sh_name | |
2856 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 2857 | ".symtab_shndx", FALSE); |
9ad5cbcf | 2858 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 2859 | return FALSE; |
9ad5cbcf | 2860 | } |
252b5132 | 2861 | t->strtab_section = section_number++; |
2b0f7ef9 | 2862 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
2863 | } |
2864 | ||
2b0f7ef9 JJ |
2865 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
2866 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
2867 | |
2868 | elf_numsections (abfd) = section_number; | |
252b5132 RH |
2869 | elf_elfheader (abfd)->e_shnum = section_number; |
2870 | ||
2871 | /* Set up the list of section header pointers, in agreement with the | |
2872 | indices. */ | |
a50b1753 NC |
2873 | i_shdrp = (Elf_Internal_Shdr **) bfd_zalloc2 (abfd, section_number, |
2874 | sizeof (Elf_Internal_Shdr *)); | |
252b5132 | 2875 | if (i_shdrp == NULL) |
b34976b6 | 2876 | return FALSE; |
252b5132 | 2877 | |
a50b1753 NC |
2878 | i_shdrp[0] = (Elf_Internal_Shdr *) bfd_zalloc (abfd, |
2879 | sizeof (Elf_Internal_Shdr)); | |
252b5132 RH |
2880 | if (i_shdrp[0] == NULL) |
2881 | { | |
2882 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 2883 | return FALSE; |
252b5132 | 2884 | } |
252b5132 RH |
2885 | |
2886 | elf_elfsections (abfd) = i_shdrp; | |
2887 | ||
2888 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
3516e984 | 2889 | if (need_symtab) |
252b5132 RH |
2890 | { |
2891 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
4fbb74a6 | 2892 | if (elf_numsections (abfd) > (SHN_LORESERVE & 0xFFFF)) |
9ad5cbcf AM |
2893 | { |
2894 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
2895 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
2896 | } | |
252b5132 RH |
2897 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
2898 | t->symtab_hdr.sh_link = t->strtab_section; | |
2899 | } | |
38ce5b11 | 2900 | |
252b5132 RH |
2901 | for (sec = abfd->sections; sec; sec = sec->next) |
2902 | { | |
252b5132 RH |
2903 | asection *s; |
2904 | const char *name; | |
2905 | ||
91d6fa6a NC |
2906 | d = elf_section_data (sec); |
2907 | ||
252b5132 RH |
2908 | i_shdrp[d->this_idx] = &d->this_hdr; |
2909 | if (d->rel_idx != 0) | |
2910 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
2911 | if (d->rel_idx2 != 0) |
2912 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
2913 | |
2914 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
2915 | ||
2916 | /* sh_link of a reloc section is the section index of the symbol | |
2917 | table. sh_info is the section index of the section to which | |
2918 | the relocation entries apply. */ | |
2919 | if (d->rel_idx != 0) | |
2920 | { | |
2921 | d->rel_hdr.sh_link = t->symtab_section; | |
2922 | d->rel_hdr.sh_info = d->this_idx; | |
2923 | } | |
23bc299b MM |
2924 | if (d->rel_idx2 != 0) |
2925 | { | |
2926 | d->rel_hdr2->sh_link = t->symtab_section; | |
2927 | d->rel_hdr2->sh_info = d->this_idx; | |
2928 | } | |
252b5132 | 2929 | |
38ce5b11 L |
2930 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
2931 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
2932 | { | |
2933 | s = elf_linked_to_section (sec); | |
2934 | if (s) | |
38ce5b11 | 2935 | { |
f2876037 | 2936 | /* elf_linked_to_section points to the input section. */ |
ccd2ec6a | 2937 | if (link_info != NULL) |
38ce5b11 | 2938 | { |
f2876037 | 2939 | /* Check discarded linkonce section. */ |
ccd2ec6a | 2940 | if (elf_discarded_section (s)) |
38ce5b11 | 2941 | { |
ccd2ec6a L |
2942 | asection *kept; |
2943 | (*_bfd_error_handler) | |
2944 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
2945 | abfd, d->this_hdr.bfd_section, | |
2946 | s, s->owner); | |
2947 | /* Point to the kept section if it has the same | |
2948 | size as the discarded one. */ | |
c0f00686 | 2949 | kept = _bfd_elf_check_kept_section (s, link_info); |
ccd2ec6a | 2950 | if (kept == NULL) |
185d09ad | 2951 | { |
ccd2ec6a L |
2952 | bfd_set_error (bfd_error_bad_value); |
2953 | return FALSE; | |
185d09ad | 2954 | } |
ccd2ec6a | 2955 | s = kept; |
38ce5b11 | 2956 | } |
e424ecc8 | 2957 | |
ccd2ec6a L |
2958 | s = s->output_section; |
2959 | BFD_ASSERT (s != NULL); | |
38ce5b11 | 2960 | } |
f2876037 L |
2961 | else |
2962 | { | |
2963 | /* Handle objcopy. */ | |
2964 | if (s->output_section == NULL) | |
2965 | { | |
2966 | (*_bfd_error_handler) | |
2967 | (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"), | |
2968 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
2969 | bfd_set_error (bfd_error_bad_value); | |
2970 | return FALSE; | |
2971 | } | |
2972 | s = s->output_section; | |
2973 | } | |
ccd2ec6a L |
2974 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; |
2975 | } | |
2976 | else | |
2977 | { | |
2978 | /* PR 290: | |
2979 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
2980 | SHF_LINK_ORDER. But it doesn't set the sh_link or | |
2981 | sh_info fields. Hence we could get the situation | |
08a40648 | 2982 | where s is NULL. */ |
ccd2ec6a L |
2983 | const struct elf_backend_data *bed |
2984 | = get_elf_backend_data (abfd); | |
2985 | if (bed->link_order_error_handler) | |
2986 | bed->link_order_error_handler | |
2987 | (_("%B: warning: sh_link not set for section `%A'"), | |
2988 | abfd, sec); | |
38ce5b11 L |
2989 | } |
2990 | } | |
2991 | ||
252b5132 RH |
2992 | switch (d->this_hdr.sh_type) |
2993 | { | |
2994 | case SHT_REL: | |
2995 | case SHT_RELA: | |
2996 | /* A reloc section which we are treating as a normal BFD | |
2997 | section. sh_link is the section index of the symbol | |
2998 | table. sh_info is the section index of the section to | |
2999 | which the relocation entries apply. We assume that an | |
3000 | allocated reloc section uses the dynamic symbol table. | |
3001 | FIXME: How can we be sure? */ | |
3002 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3003 | if (s != NULL) | |
3004 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3005 | ||
3006 | /* We look up the section the relocs apply to by name. */ | |
3007 | name = sec->name; | |
3008 | if (d->this_hdr.sh_type == SHT_REL) | |
3009 | name += 4; | |
3010 | else | |
3011 | name += 5; | |
3012 | s = bfd_get_section_by_name (abfd, name); | |
3013 | if (s != NULL) | |
3014 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3015 | break; | |
3016 | ||
3017 | case SHT_STRTAB: | |
3018 | /* We assume that a section named .stab*str is a stabs | |
3019 | string section. We look for a section with the same name | |
3020 | but without the trailing ``str'', and set its sh_link | |
3021 | field to point to this section. */ | |
0112cd26 | 3022 | if (CONST_STRNEQ (sec->name, ".stab") |
252b5132 RH |
3023 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) |
3024 | { | |
3025 | size_t len; | |
3026 | char *alc; | |
3027 | ||
3028 | len = strlen (sec->name); | |
a50b1753 | 3029 | alc = (char *) bfd_malloc (len - 2); |
252b5132 | 3030 | if (alc == NULL) |
b34976b6 | 3031 | return FALSE; |
d4c88bbb | 3032 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3033 | alc[len - 3] = '\0'; |
3034 | s = bfd_get_section_by_name (abfd, alc); | |
3035 | free (alc); | |
3036 | if (s != NULL) | |
3037 | { | |
3038 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3039 | ||
3040 | /* This is a .stab section. */ | |
0594c12d AM |
3041 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3042 | elf_section_data (s)->this_hdr.sh_entsize | |
3043 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3044 | } |
3045 | } | |
3046 | break; | |
3047 | ||
3048 | case SHT_DYNAMIC: | |
3049 | case SHT_DYNSYM: | |
3050 | case SHT_GNU_verneed: | |
3051 | case SHT_GNU_verdef: | |
3052 | /* sh_link is the section header index of the string table | |
3053 | used for the dynamic entries, or the symbol table, or the | |
3054 | version strings. */ | |
3055 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3056 | if (s != NULL) | |
3057 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3058 | break; | |
3059 | ||
7f1204bb JJ |
3060 | case SHT_GNU_LIBLIST: |
3061 | /* sh_link is the section header index of the prelink library | |
08a40648 AM |
3062 | list used for the dynamic entries, or the symbol table, or |
3063 | the version strings. */ | |
7f1204bb JJ |
3064 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) |
3065 | ? ".dynstr" : ".gnu.libstr"); | |
3066 | if (s != NULL) | |
3067 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3068 | break; | |
3069 | ||
252b5132 | 3070 | case SHT_HASH: |
fdc90cb4 | 3071 | case SHT_GNU_HASH: |
252b5132 RH |
3072 | case SHT_GNU_versym: |
3073 | /* sh_link is the section header index of the symbol table | |
3074 | this hash table or version table is for. */ | |
3075 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3076 | if (s != NULL) | |
3077 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3078 | break; | |
dbb410c3 AM |
3079 | |
3080 | case SHT_GROUP: | |
3081 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3082 | } |
3083 | } | |
3084 | ||
2b0f7ef9 | 3085 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3086 | if (i_shdrp[secn] == NULL) |
3087 | i_shdrp[secn] = i_shdrp[0]; | |
3088 | else | |
3089 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3090 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3091 | return TRUE; |
252b5132 RH |
3092 | } |
3093 | ||
3094 | /* Map symbol from it's internal number to the external number, moving | |
3095 | all local symbols to be at the head of the list. */ | |
3096 | ||
5372391b | 3097 | static bfd_boolean |
217aa764 | 3098 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3099 | { |
3100 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3101 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3102 | if (bed->elf_backend_sym_is_global) |
3103 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 | 3104 | |
e47bf690 | 3105 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0 |
252b5132 RH |
3106 | || bfd_is_und_section (bfd_get_section (sym)) |
3107 | || bfd_is_com_section (bfd_get_section (sym))); | |
3108 | } | |
3109 | ||
5372391b | 3110 | /* Don't output section symbols for sections that are not going to be |
0f0a5e58 | 3111 | output. */ |
5372391b AM |
3112 | |
3113 | static bfd_boolean | |
3114 | ignore_section_sym (bfd *abfd, asymbol *sym) | |
3115 | { | |
3116 | return ((sym->flags & BSF_SECTION_SYM) != 0 | |
0f0a5e58 AM |
3117 | && !(sym->section->owner == abfd |
3118 | || (sym->section->output_section->owner == abfd | |
3119 | && sym->section->output_offset == 0))); | |
5372391b AM |
3120 | } |
3121 | ||
b34976b6 | 3122 | static bfd_boolean |
217aa764 | 3123 | elf_map_symbols (bfd *abfd) |
252b5132 | 3124 | { |
dc810e39 | 3125 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3126 | asymbol **syms = bfd_get_outsymbols (abfd); |
3127 | asymbol **sect_syms; | |
dc810e39 AM |
3128 | unsigned int num_locals = 0; |
3129 | unsigned int num_globals = 0; | |
3130 | unsigned int num_locals2 = 0; | |
3131 | unsigned int num_globals2 = 0; | |
252b5132 | 3132 | int max_index = 0; |
dc810e39 | 3133 | unsigned int idx; |
252b5132 RH |
3134 | asection *asect; |
3135 | asymbol **new_syms; | |
252b5132 RH |
3136 | |
3137 | #ifdef DEBUG | |
3138 | fprintf (stderr, "elf_map_symbols\n"); | |
3139 | fflush (stderr); | |
3140 | #endif | |
3141 | ||
252b5132 RH |
3142 | for (asect = abfd->sections; asect; asect = asect->next) |
3143 | { | |
3144 | if (max_index < asect->index) | |
3145 | max_index = asect->index; | |
3146 | } | |
3147 | ||
3148 | max_index++; | |
a50b1753 | 3149 | sect_syms = (asymbol **) bfd_zalloc2 (abfd, max_index, sizeof (asymbol *)); |
252b5132 | 3150 | if (sect_syms == NULL) |
b34976b6 | 3151 | return FALSE; |
252b5132 | 3152 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3153 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3154 | |
079e9a2f AM |
3155 | /* Init sect_syms entries for any section symbols we have already |
3156 | decided to output. */ | |
252b5132 RH |
3157 | for (idx = 0; idx < symcount; idx++) |
3158 | { | |
dc810e39 | 3159 | asymbol *sym = syms[idx]; |
c044fabd | 3160 | |
252b5132 | 3161 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
0f0a5e58 | 3162 | && sym->value == 0 |
5372391b | 3163 | && !ignore_section_sym (abfd, sym)) |
252b5132 | 3164 | { |
5372391b | 3165 | asection *sec = sym->section; |
252b5132 | 3166 | |
5372391b AM |
3167 | if (sec->owner != abfd) |
3168 | sec = sec->output_section; | |
252b5132 | 3169 | |
5372391b | 3170 | sect_syms[sec->index] = syms[idx]; |
252b5132 RH |
3171 | } |
3172 | } | |
3173 | ||
252b5132 RH |
3174 | /* Classify all of the symbols. */ |
3175 | for (idx = 0; idx < symcount; idx++) | |
3176 | { | |
5372391b AM |
3177 | if (ignore_section_sym (abfd, syms[idx])) |
3178 | continue; | |
252b5132 RH |
3179 | if (!sym_is_global (abfd, syms[idx])) |
3180 | num_locals++; | |
3181 | else | |
3182 | num_globals++; | |
3183 | } | |
079e9a2f | 3184 | |
5372391b | 3185 | /* We will be adding a section symbol for each normal BFD section. Most |
079e9a2f AM |
3186 | sections will already have a section symbol in outsymbols, but |
3187 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3188 | at least in that case. */ | |
252b5132 RH |
3189 | for (asect = abfd->sections; asect; asect = asect->next) |
3190 | { | |
079e9a2f | 3191 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3192 | { |
079e9a2f | 3193 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3194 | num_locals++; |
3195 | else | |
3196 | num_globals++; | |
252b5132 RH |
3197 | } |
3198 | } | |
3199 | ||
3200 | /* Now sort the symbols so the local symbols are first. */ | |
a50b1753 NC |
3201 | new_syms = (asymbol **) bfd_alloc2 (abfd, num_locals + num_globals, |
3202 | sizeof (asymbol *)); | |
dc810e39 | 3203 | |
252b5132 | 3204 | if (new_syms == NULL) |
b34976b6 | 3205 | return FALSE; |
252b5132 RH |
3206 | |
3207 | for (idx = 0; idx < symcount; idx++) | |
3208 | { | |
3209 | asymbol *sym = syms[idx]; | |
dc810e39 | 3210 | unsigned int i; |
252b5132 | 3211 | |
5372391b AM |
3212 | if (ignore_section_sym (abfd, sym)) |
3213 | continue; | |
252b5132 RH |
3214 | if (!sym_is_global (abfd, sym)) |
3215 | i = num_locals2++; | |
3216 | else | |
3217 | i = num_locals + num_globals2++; | |
3218 | new_syms[i] = sym; | |
3219 | sym->udata.i = i + 1; | |
3220 | } | |
3221 | for (asect = abfd->sections; asect; asect = asect->next) | |
3222 | { | |
079e9a2f | 3223 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3224 | { |
079e9a2f | 3225 | asymbol *sym = asect->symbol; |
dc810e39 | 3226 | unsigned int i; |
252b5132 | 3227 | |
079e9a2f | 3228 | sect_syms[asect->index] = sym; |
252b5132 RH |
3229 | if (!sym_is_global (abfd, sym)) |
3230 | i = num_locals2++; | |
3231 | else | |
3232 | i = num_locals + num_globals2++; | |
3233 | new_syms[i] = sym; | |
3234 | sym->udata.i = i + 1; | |
3235 | } | |
3236 | } | |
3237 | ||
3238 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3239 | ||
3240 | elf_num_locals (abfd) = num_locals; | |
3241 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3242 | return TRUE; |
252b5132 RH |
3243 | } |
3244 | ||
3245 | /* Align to the maximum file alignment that could be required for any | |
3246 | ELF data structure. */ | |
3247 | ||
268b6b39 | 3248 | static inline file_ptr |
217aa764 | 3249 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3250 | { |
3251 | return (off + align - 1) & ~(align - 1); | |
3252 | } | |
3253 | ||
3254 | /* Assign a file position to a section, optionally aligning to the | |
3255 | required section alignment. */ | |
3256 | ||
217aa764 AM |
3257 | file_ptr |
3258 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3259 | file_ptr offset, | |
3260 | bfd_boolean align) | |
252b5132 | 3261 | { |
72de5009 AM |
3262 | if (align && i_shdrp->sh_addralign > 1) |
3263 | offset = BFD_ALIGN (offset, i_shdrp->sh_addralign); | |
252b5132 RH |
3264 | i_shdrp->sh_offset = offset; |
3265 | if (i_shdrp->bfd_section != NULL) | |
3266 | i_shdrp->bfd_section->filepos = offset; | |
3267 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3268 | offset += i_shdrp->sh_size; | |
3269 | return offset; | |
3270 | } | |
3271 | ||
3272 | /* Compute the file positions we are going to put the sections at, and | |
3273 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3274 | is not NULL, this is being called by the ELF backend linker. */ | |
3275 | ||
b34976b6 | 3276 | bfd_boolean |
217aa764 AM |
3277 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3278 | struct bfd_link_info *link_info) | |
252b5132 | 3279 | { |
9c5bfbb7 | 3280 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3281 | bfd_boolean failed; |
4b6c0f2f | 3282 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 | 3283 | Elf_Internal_Shdr *shstrtab_hdr; |
3516e984 | 3284 | bfd_boolean need_symtab; |
252b5132 RH |
3285 | |
3286 | if (abfd->output_has_begun) | |
b34976b6 | 3287 | return TRUE; |
252b5132 RH |
3288 | |
3289 | /* Do any elf backend specific processing first. */ | |
3290 | if (bed->elf_backend_begin_write_processing) | |
3291 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3292 | ||
3293 | if (! prep_headers (abfd)) | |
b34976b6 | 3294 | return FALSE; |
252b5132 | 3295 | |
e6c51ed4 NC |
3296 | /* Post process the headers if necessary. */ |
3297 | if (bed->elf_backend_post_process_headers) | |
3298 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3299 | ||
b34976b6 | 3300 | failed = FALSE; |
252b5132 RH |
3301 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3302 | if (failed) | |
b34976b6 | 3303 | return FALSE; |
252b5132 | 3304 | |
da9f89d4 | 3305 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3306 | return FALSE; |
252b5132 RH |
3307 | |
3308 | /* The backend linker builds symbol table information itself. */ | |
3516e984 L |
3309 | need_symtab = (link_info == NULL |
3310 | && (bfd_get_symcount (abfd) > 0 | |
3311 | || ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC)) | |
3312 | == HAS_RELOC))); | |
3313 | if (need_symtab) | |
252b5132 RH |
3314 | { |
3315 | /* Non-zero if doing a relocatable link. */ | |
3316 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3317 | ||
3318 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3319 | return FALSE; |
252b5132 RH |
3320 | } |
3321 | ||
1126897b | 3322 | if (link_info == NULL) |
dbb410c3 | 3323 | { |
1126897b | 3324 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3325 | if (failed) |
b34976b6 | 3326 | return FALSE; |
dbb410c3 AM |
3327 | } |
3328 | ||
252b5132 RH |
3329 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3330 | /* sh_name was set in prep_headers. */ | |
3331 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3332 | shstrtab_hdr->sh_flags = 0; | |
3333 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3334 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3335 | shstrtab_hdr->sh_entsize = 0; |
3336 | shstrtab_hdr->sh_link = 0; | |
3337 | shstrtab_hdr->sh_info = 0; | |
3338 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3339 | shstrtab_hdr->sh_addralign = 1; | |
3340 | ||
c84fca4d | 3341 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3342 | return FALSE; |
252b5132 | 3343 | |
3516e984 | 3344 | if (need_symtab) |
252b5132 RH |
3345 | { |
3346 | file_ptr off; | |
3347 | Elf_Internal_Shdr *hdr; | |
3348 | ||
3349 | off = elf_tdata (abfd)->next_file_pos; | |
3350 | ||
3351 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3352 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3353 | |
9ad5cbcf AM |
3354 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3355 | if (hdr->sh_size != 0) | |
b34976b6 | 3356 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3357 | |
252b5132 | 3358 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3359 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3360 | |
3361 | elf_tdata (abfd)->next_file_pos = off; | |
3362 | ||
3363 | /* Now that we know where the .strtab section goes, write it | |
08a40648 | 3364 | out. */ |
252b5132 RH |
3365 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
3366 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3367 | return FALSE; |
252b5132 RH |
3368 | _bfd_stringtab_free (strtab); |
3369 | } | |
3370 | ||
b34976b6 | 3371 | abfd->output_has_begun = TRUE; |
252b5132 | 3372 | |
b34976b6 | 3373 | return TRUE; |
252b5132 RH |
3374 | } |
3375 | ||
8ded5a0f AM |
3376 | /* Make an initial estimate of the size of the program header. If we |
3377 | get the number wrong here, we'll redo section placement. */ | |
3378 | ||
3379 | static bfd_size_type | |
3380 | get_program_header_size (bfd *abfd, struct bfd_link_info *info) | |
3381 | { | |
3382 | size_t segs; | |
3383 | asection *s; | |
2b05f1b7 | 3384 | const struct elf_backend_data *bed; |
8ded5a0f AM |
3385 | |
3386 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
3387 | and one for data. */ | |
3388 | segs = 2; | |
3389 | ||
3390 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3391 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3392 | { | |
3393 | /* If we have a loadable interpreter section, we need a | |
3394 | PT_INTERP segment. In this case, assume we also need a | |
3395 | PT_PHDR segment, although that may not be true for all | |
3396 | targets. */ | |
3397 | segs += 2; | |
3398 | } | |
3399 | ||
3400 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
3401 | { | |
3402 | /* We need a PT_DYNAMIC segment. */ | |
3403 | ++segs; | |
f210dcff | 3404 | } |
08a40648 | 3405 | |
ceae84aa | 3406 | if (info != NULL && info->relro) |
f210dcff L |
3407 | { |
3408 | /* We need a PT_GNU_RELRO segment. */ | |
3409 | ++segs; | |
8ded5a0f AM |
3410 | } |
3411 | ||
3412 | if (elf_tdata (abfd)->eh_frame_hdr) | |
3413 | { | |
3414 | /* We need a PT_GNU_EH_FRAME segment. */ | |
3415 | ++segs; | |
3416 | } | |
3417 | ||
2b05f1b7 | 3418 | if (elf_tdata (abfd)->stack_flags) |
8ded5a0f | 3419 | { |
2b05f1b7 L |
3420 | /* We need a PT_GNU_STACK segment. */ |
3421 | ++segs; | |
3422 | } | |
94b11780 | 3423 | |
2b05f1b7 L |
3424 | for (s = abfd->sections; s != NULL; s = s->next) |
3425 | { | |
8ded5a0f | 3426 | if ((s->flags & SEC_LOAD) != 0 |
0112cd26 | 3427 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f AM |
3428 | { |
3429 | /* We need a PT_NOTE segment. */ | |
3430 | ++segs; | |
1c5265b5 JJ |
3431 | /* Try to create just one PT_NOTE segment |
3432 | for all adjacent loadable .note* sections. | |
3433 | gABI requires that within a PT_NOTE segment | |
3434 | (and also inside of each SHT_NOTE section) | |
3435 | each note is padded to a multiple of 4 size, | |
3436 | so we check whether the sections are correctly | |
3437 | aligned. */ | |
3438 | if (s->alignment_power == 2) | |
3439 | while (s->next != NULL | |
3440 | && s->next->alignment_power == 2 | |
3441 | && (s->next->flags & SEC_LOAD) != 0 | |
3442 | && CONST_STRNEQ (s->next->name, ".note")) | |
3443 | s = s->next; | |
8ded5a0f AM |
3444 | } |
3445 | } | |
3446 | ||
3447 | for (s = abfd->sections; s != NULL; s = s->next) | |
3448 | { | |
3449 | if (s->flags & SEC_THREAD_LOCAL) | |
3450 | { | |
3451 | /* We need a PT_TLS segment. */ | |
3452 | ++segs; | |
3453 | break; | |
3454 | } | |
3455 | } | |
3456 | ||
3457 | /* Let the backend count up any program headers it might need. */ | |
2b05f1b7 | 3458 | bed = get_elf_backend_data (abfd); |
8ded5a0f AM |
3459 | if (bed->elf_backend_additional_program_headers) |
3460 | { | |
3461 | int a; | |
3462 | ||
3463 | a = (*bed->elf_backend_additional_program_headers) (abfd, info); | |
3464 | if (a == -1) | |
3465 | abort (); | |
3466 | segs += a; | |
3467 | } | |
3468 | ||
3469 | return segs * bed->s->sizeof_phdr; | |
3470 | } | |
3471 | ||
2ea37f1c NC |
3472 | /* Find the segment that contains the output_section of section. */ |
3473 | ||
3474 | Elf_Internal_Phdr * | |
3475 | _bfd_elf_find_segment_containing_section (bfd * abfd, asection * section) | |
3476 | { | |
3477 | struct elf_segment_map *m; | |
3478 | Elf_Internal_Phdr *p; | |
3479 | ||
3480 | for (m = elf_tdata (abfd)->segment_map, | |
3481 | p = elf_tdata (abfd)->phdr; | |
3482 | m != NULL; | |
3483 | m = m->next, p++) | |
3484 | { | |
3485 | int i; | |
3486 | ||
3487 | for (i = m->count - 1; i >= 0; i--) | |
3488 | if (m->sections[i] == section) | |
3489 | return p; | |
3490 | } | |
3491 | ||
3492 | return NULL; | |
3493 | } | |
3494 | ||
252b5132 RH |
3495 | /* Create a mapping from a set of sections to a program segment. */ |
3496 | ||
217aa764 AM |
3497 | static struct elf_segment_map * |
3498 | make_mapping (bfd *abfd, | |
3499 | asection **sections, | |
3500 | unsigned int from, | |
3501 | unsigned int to, | |
3502 | bfd_boolean phdr) | |
252b5132 RH |
3503 | { |
3504 | struct elf_segment_map *m; | |
3505 | unsigned int i; | |
3506 | asection **hdrpp; | |
dc810e39 | 3507 | bfd_size_type amt; |
252b5132 | 3508 | |
dc810e39 AM |
3509 | amt = sizeof (struct elf_segment_map); |
3510 | amt += (to - from - 1) * sizeof (asection *); | |
a50b1753 | 3511 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
252b5132 RH |
3512 | if (m == NULL) |
3513 | return NULL; | |
3514 | m->next = NULL; | |
3515 | m->p_type = PT_LOAD; | |
3516 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3517 | m->sections[i - from] = *hdrpp; | |
3518 | m->count = to - from; | |
3519 | ||
3520 | if (from == 0 && phdr) | |
3521 | { | |
3522 | /* Include the headers in the first PT_LOAD segment. */ | |
3523 | m->includes_filehdr = 1; | |
3524 | m->includes_phdrs = 1; | |
3525 | } | |
3526 | ||
3527 | return m; | |
3528 | } | |
3529 | ||
229fcec5 MM |
3530 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3531 | on failure. */ | |
3532 | ||
3533 | struct elf_segment_map * | |
3534 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3535 | { | |
3536 | struct elf_segment_map *m; | |
3537 | ||
a50b1753 NC |
3538 | m = (struct elf_segment_map *) bfd_zalloc (abfd, |
3539 | sizeof (struct elf_segment_map)); | |
229fcec5 MM |
3540 | if (m == NULL) |
3541 | return NULL; | |
3542 | m->next = NULL; | |
3543 | m->p_type = PT_DYNAMIC; | |
3544 | m->count = 1; | |
3545 | m->sections[0] = dynsec; | |
08a40648 | 3546 | |
229fcec5 MM |
3547 | return m; |
3548 | } | |
3549 | ||
8ded5a0f | 3550 | /* Possibly add or remove segments from the segment map. */ |
252b5132 | 3551 | |
b34976b6 | 3552 | static bfd_boolean |
3dea8fca AM |
3553 | elf_modify_segment_map (bfd *abfd, |
3554 | struct bfd_link_info *info, | |
3555 | bfd_boolean remove_empty_load) | |
252b5132 | 3556 | { |
252e386e | 3557 | struct elf_segment_map **m; |
8ded5a0f | 3558 | const struct elf_backend_data *bed; |
252b5132 | 3559 | |
8ded5a0f AM |
3560 | /* The placement algorithm assumes that non allocated sections are |
3561 | not in PT_LOAD segments. We ensure this here by removing such | |
3562 | sections from the segment map. We also remove excluded | |
252e386e AM |
3563 | sections. Finally, any PT_LOAD segment without sections is |
3564 | removed. */ | |
3565 | m = &elf_tdata (abfd)->segment_map; | |
3566 | while (*m) | |
8ded5a0f AM |
3567 | { |
3568 | unsigned int i, new_count; | |
252b5132 | 3569 | |
252e386e | 3570 | for (new_count = 0, i = 0; i < (*m)->count; i++) |
8ded5a0f | 3571 | { |
252e386e AM |
3572 | if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0 |
3573 | && (((*m)->sections[i]->flags & SEC_ALLOC) != 0 | |
3574 | || (*m)->p_type != PT_LOAD)) | |
8ded5a0f | 3575 | { |
252e386e AM |
3576 | (*m)->sections[new_count] = (*m)->sections[i]; |
3577 | new_count++; | |
8ded5a0f AM |
3578 | } |
3579 | } | |
252e386e | 3580 | (*m)->count = new_count; |
252b5132 | 3581 | |
3dea8fca | 3582 | if (remove_empty_load && (*m)->p_type == PT_LOAD && (*m)->count == 0) |
252e386e AM |
3583 | *m = (*m)->next; |
3584 | else | |
3585 | m = &(*m)->next; | |
8ded5a0f | 3586 | } |
252b5132 | 3587 | |
8ded5a0f AM |
3588 | bed = get_elf_backend_data (abfd); |
3589 | if (bed->elf_backend_modify_segment_map != NULL) | |
252b5132 | 3590 | { |
252e386e | 3591 | if (!(*bed->elf_backend_modify_segment_map) (abfd, info)) |
8ded5a0f | 3592 | return FALSE; |
252b5132 | 3593 | } |
252b5132 | 3594 | |
8ded5a0f AM |
3595 | return TRUE; |
3596 | } | |
252b5132 | 3597 | |
8ded5a0f | 3598 | /* Set up a mapping from BFD sections to program segments. */ |
252b5132 | 3599 | |
8ded5a0f AM |
3600 | bfd_boolean |
3601 | _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) | |
3602 | { | |
3603 | unsigned int count; | |
3604 | struct elf_segment_map *m; | |
3605 | asection **sections = NULL; | |
3606 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3dea8fca | 3607 | bfd_boolean no_user_phdrs; |
252b5132 | 3608 | |
3dea8fca AM |
3609 | no_user_phdrs = elf_tdata (abfd)->segment_map == NULL; |
3610 | if (no_user_phdrs && bfd_count_sections (abfd) != 0) | |
252b5132 | 3611 | { |
8ded5a0f AM |
3612 | asection *s; |
3613 | unsigned int i; | |
3614 | struct elf_segment_map *mfirst; | |
3615 | struct elf_segment_map **pm; | |
3616 | asection *last_hdr; | |
3617 | bfd_vma last_size; | |
3618 | unsigned int phdr_index; | |
3619 | bfd_vma maxpagesize; | |
3620 | asection **hdrpp; | |
3621 | bfd_boolean phdr_in_segment = TRUE; | |
3622 | bfd_boolean writable; | |
3623 | int tls_count = 0; | |
3624 | asection *first_tls = NULL; | |
3625 | asection *dynsec, *eh_frame_hdr; | |
3626 | bfd_size_type amt; | |
252b5132 | 3627 | |
8ded5a0f | 3628 | /* Select the allocated sections, and sort them. */ |
252b5132 | 3629 | |
a50b1753 NC |
3630 | sections = (asection **) bfd_malloc2 (bfd_count_sections (abfd), |
3631 | sizeof (asection *)); | |
8ded5a0f | 3632 | if (sections == NULL) |
252b5132 | 3633 | goto error_return; |
252b5132 | 3634 | |
8ded5a0f AM |
3635 | i = 0; |
3636 | for (s = abfd->sections; s != NULL; s = s->next) | |
3637 | { | |
3638 | if ((s->flags & SEC_ALLOC) != 0) | |
3639 | { | |
3640 | sections[i] = s; | |
3641 | ++i; | |
3642 | } | |
3643 | } | |
3644 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3645 | count = i; | |
252b5132 | 3646 | |
8ded5a0f | 3647 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); |
252b5132 | 3648 | |
8ded5a0f | 3649 | /* Build the mapping. */ |
252b5132 | 3650 | |
8ded5a0f AM |
3651 | mfirst = NULL; |
3652 | pm = &mfirst; | |
252b5132 | 3653 | |
8ded5a0f AM |
3654 | /* If we have a .interp section, then create a PT_PHDR segment for |
3655 | the program headers and a PT_INTERP segment for the .interp | |
3656 | section. */ | |
3657 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3658 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3659 | { | |
3660 | amt = sizeof (struct elf_segment_map); | |
a50b1753 | 3661 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
3662 | if (m == NULL) |
3663 | goto error_return; | |
3664 | m->next = NULL; | |
3665 | m->p_type = PT_PHDR; | |
3666 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3667 | m->p_flags = PF_R | PF_X; | |
3668 | m->p_flags_valid = 1; | |
3669 | m->includes_phdrs = 1; | |
252b5132 | 3670 | |
8ded5a0f AM |
3671 | *pm = m; |
3672 | pm = &m->next; | |
252b5132 | 3673 | |
8ded5a0f | 3674 | amt = sizeof (struct elf_segment_map); |
a50b1753 | 3675 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
3676 | if (m == NULL) |
3677 | goto error_return; | |
3678 | m->next = NULL; | |
3679 | m->p_type = PT_INTERP; | |
3680 | m->count = 1; | |
3681 | m->sections[0] = s; | |
3682 | ||
3683 | *pm = m; | |
3684 | pm = &m->next; | |
252b5132 | 3685 | } |
8ded5a0f AM |
3686 | |
3687 | /* Look through the sections. We put sections in the same program | |
3688 | segment when the start of the second section can be placed within | |
3689 | a few bytes of the end of the first section. */ | |
3690 | last_hdr = NULL; | |
3691 | last_size = 0; | |
3692 | phdr_index = 0; | |
3693 | maxpagesize = bed->maxpagesize; | |
3694 | writable = FALSE; | |
3695 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
3696 | if (dynsec != NULL | |
3697 | && (dynsec->flags & SEC_LOAD) == 0) | |
3698 | dynsec = NULL; | |
3699 | ||
3700 | /* Deal with -Ttext or something similar such that the first section | |
3701 | is not adjacent to the program headers. This is an | |
3702 | approximation, since at this point we don't know exactly how many | |
3703 | program headers we will need. */ | |
3704 | if (count > 0) | |
252b5132 | 3705 | { |
8ded5a0f AM |
3706 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
3707 | ||
62d7a5f6 | 3708 | if (phdr_size == (bfd_size_type) -1) |
8ded5a0f AM |
3709 | phdr_size = get_program_header_size (abfd, info); |
3710 | if ((abfd->flags & D_PAGED) == 0 | |
3711 | || sections[0]->lma < phdr_size | |
3712 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
3713 | phdr_in_segment = FALSE; | |
252b5132 RH |
3714 | } |
3715 | ||
8ded5a0f | 3716 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) |
252b5132 | 3717 | { |
8ded5a0f AM |
3718 | asection *hdr; |
3719 | bfd_boolean new_segment; | |
3720 | ||
3721 | hdr = *hdrpp; | |
3722 | ||
3723 | /* See if this section and the last one will fit in the same | |
3724 | segment. */ | |
3725 | ||
3726 | if (last_hdr == NULL) | |
3727 | { | |
3728 | /* If we don't have a segment yet, then we don't need a new | |
3729 | one (we build the last one after this loop). */ | |
3730 | new_segment = FALSE; | |
3731 | } | |
3732 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3733 | { | |
3734 | /* If this section has a different relation between the | |
3735 | virtual address and the load address, then we need a new | |
3736 | segment. */ | |
3737 | new_segment = TRUE; | |
3738 | } | |
b5599592 AM |
3739 | else if (hdr->lma < last_hdr->lma + last_size |
3740 | || last_hdr->lma + last_size < last_hdr->lma) | |
3741 | { | |
3742 | /* If this section has a load address that makes it overlap | |
3743 | the previous section, then we need a new segment. */ | |
3744 | new_segment = TRUE; | |
3745 | } | |
39948a60 NC |
3746 | /* In the next test we have to be careful when last_hdr->lma is close |
3747 | to the end of the address space. If the aligned address wraps | |
3748 | around to the start of the address space, then there are no more | |
3749 | pages left in memory and it is OK to assume that the current | |
3750 | section can be included in the current segment. */ | |
3751 | else if ((BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) + maxpagesize | |
3752 | > last_hdr->lma) | |
3753 | && (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) + maxpagesize | |
4ff73856 | 3754 | <= hdr->lma)) |
8ded5a0f AM |
3755 | { |
3756 | /* If putting this section in this segment would force us to | |
3757 | skip a page in the segment, then we need a new segment. */ | |
3758 | new_segment = TRUE; | |
3759 | } | |
3760 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 | |
3761 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
3762 | { | |
3763 | /* We don't want to put a loadable section after a | |
3764 | nonloadable section in the same segment. | |
3765 | Consider .tbss sections as loadable for this purpose. */ | |
3766 | new_segment = TRUE; | |
3767 | } | |
3768 | else if ((abfd->flags & D_PAGED) == 0) | |
3769 | { | |
3770 | /* If the file is not demand paged, which means that we | |
3771 | don't require the sections to be correctly aligned in the | |
3772 | file, then there is no other reason for a new segment. */ | |
3773 | new_segment = FALSE; | |
3774 | } | |
3775 | else if (! writable | |
3776 | && (hdr->flags & SEC_READONLY) == 0 | |
3777 | && (((last_hdr->lma + last_size - 1) | |
3778 | & ~(maxpagesize - 1)) | |
3779 | != (hdr->lma & ~(maxpagesize - 1)))) | |
3780 | { | |
3781 | /* We don't want to put a writable section in a read only | |
3782 | segment, unless they are on the same page in memory | |
3783 | anyhow. We already know that the last section does not | |
3784 | bring us past the current section on the page, so the | |
3785 | only case in which the new section is not on the same | |
3786 | page as the previous section is when the previous section | |
3787 | ends precisely on a page boundary. */ | |
3788 | new_segment = TRUE; | |
3789 | } | |
3790 | else | |
3791 | { | |
3792 | /* Otherwise, we can use the same segment. */ | |
3793 | new_segment = FALSE; | |
3794 | } | |
3795 | ||
2889e75b | 3796 | /* Allow interested parties a chance to override our decision. */ |
ceae84aa AM |
3797 | if (last_hdr != NULL |
3798 | && info != NULL | |
3799 | && info->callbacks->override_segment_assignment != NULL) | |
3800 | new_segment | |
3801 | = info->callbacks->override_segment_assignment (info, abfd, hdr, | |
3802 | last_hdr, | |
3803 | new_segment); | |
2889e75b | 3804 | |
8ded5a0f AM |
3805 | if (! new_segment) |
3806 | { | |
3807 | if ((hdr->flags & SEC_READONLY) == 0) | |
3808 | writable = TRUE; | |
3809 | last_hdr = hdr; | |
3810 | /* .tbss sections effectively have zero size. */ | |
3811 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) | |
3812 | != SEC_THREAD_LOCAL) | |
3813 | last_size = hdr->size; | |
3814 | else | |
3815 | last_size = 0; | |
3816 | continue; | |
3817 | } | |
3818 | ||
3819 | /* We need a new program segment. We must create a new program | |
3820 | header holding all the sections from phdr_index until hdr. */ | |
3821 | ||
3822 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3823 | if (m == NULL) | |
3824 | goto error_return; | |
3825 | ||
3826 | *pm = m; | |
3827 | pm = &m->next; | |
3828 | ||
252b5132 | 3829 | if ((hdr->flags & SEC_READONLY) == 0) |
b34976b6 | 3830 | writable = TRUE; |
8ded5a0f AM |
3831 | else |
3832 | writable = FALSE; | |
3833 | ||
baaff79e JJ |
3834 | last_hdr = hdr; |
3835 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3836 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3837 | last_size = hdr->size; |
baaff79e JJ |
3838 | else |
3839 | last_size = 0; | |
8ded5a0f AM |
3840 | phdr_index = i; |
3841 | phdr_in_segment = FALSE; | |
252b5132 RH |
3842 | } |
3843 | ||
8ded5a0f AM |
3844 | /* Create a final PT_LOAD program segment. */ |
3845 | if (last_hdr != NULL) | |
3846 | { | |
3847 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3848 | if (m == NULL) | |
3849 | goto error_return; | |
252b5132 | 3850 | |
8ded5a0f AM |
3851 | *pm = m; |
3852 | pm = &m->next; | |
3853 | } | |
252b5132 | 3854 | |
8ded5a0f AM |
3855 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ |
3856 | if (dynsec != NULL) | |
3857 | { | |
3858 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
3859 | if (m == NULL) | |
3860 | goto error_return; | |
3861 | *pm = m; | |
3862 | pm = &m->next; | |
3863 | } | |
252b5132 | 3864 | |
1c5265b5 JJ |
3865 | /* For each batch of consecutive loadable .note sections, |
3866 | add a PT_NOTE segment. We don't use bfd_get_section_by_name, | |
3867 | because if we link together nonloadable .note sections and | |
3868 | loadable .note sections, we will generate two .note sections | |
3869 | in the output file. FIXME: Using names for section types is | |
3870 | bogus anyhow. */ | |
8ded5a0f AM |
3871 | for (s = abfd->sections; s != NULL; s = s->next) |
3872 | { | |
3873 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 3874 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f | 3875 | { |
1c5265b5 | 3876 | asection *s2; |
91d6fa6a NC |
3877 | |
3878 | count = 1; | |
8ded5a0f | 3879 | amt = sizeof (struct elf_segment_map); |
1c5265b5 JJ |
3880 | if (s->alignment_power == 2) |
3881 | for (s2 = s; s2->next != NULL; s2 = s2->next) | |
55b581a6 JJ |
3882 | { |
3883 | if (s2->next->alignment_power == 2 | |
3884 | && (s2->next->flags & SEC_LOAD) != 0 | |
3885 | && CONST_STRNEQ (s2->next->name, ".note") | |
3886 | && align_power (s2->vma + s2->size, 2) | |
3887 | == s2->next->vma) | |
3888 | count++; | |
3889 | else | |
3890 | break; | |
3891 | } | |
1c5265b5 | 3892 | amt += (count - 1) * sizeof (asection *); |
a50b1753 | 3893 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
3894 | if (m == NULL) |
3895 | goto error_return; | |
3896 | m->next = NULL; | |
3897 | m->p_type = PT_NOTE; | |
1c5265b5 JJ |
3898 | m->count = count; |
3899 | while (count > 1) | |
3900 | { | |
3901 | m->sections[m->count - count--] = s; | |
3902 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
3903 | s = s->next; | |
3904 | } | |
3905 | m->sections[m->count - 1] = s; | |
3906 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
8ded5a0f AM |
3907 | *pm = m; |
3908 | pm = &m->next; | |
3909 | } | |
3910 | if (s->flags & SEC_THREAD_LOCAL) | |
3911 | { | |
3912 | if (! tls_count) | |
3913 | first_tls = s; | |
3914 | tls_count++; | |
3915 | } | |
3916 | } | |
252b5132 | 3917 | |
8ded5a0f AM |
3918 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ |
3919 | if (tls_count > 0) | |
3920 | { | |
8ded5a0f AM |
3921 | amt = sizeof (struct elf_segment_map); |
3922 | amt += (tls_count - 1) * sizeof (asection *); | |
a50b1753 | 3923 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
3924 | if (m == NULL) |
3925 | goto error_return; | |
3926 | m->next = NULL; | |
3927 | m->p_type = PT_TLS; | |
3928 | m->count = tls_count; | |
3929 | /* Mandated PF_R. */ | |
3930 | m->p_flags = PF_R; | |
3931 | m->p_flags_valid = 1; | |
91d6fa6a | 3932 | for (i = 0; i < (unsigned int) tls_count; ++i) |
8ded5a0f AM |
3933 | { |
3934 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
3935 | m->sections[i] = first_tls; | |
3936 | first_tls = first_tls->next; | |
3937 | } | |
252b5132 | 3938 | |
8ded5a0f AM |
3939 | *pm = m; |
3940 | pm = &m->next; | |
3941 | } | |
252b5132 | 3942 | |
8ded5a0f AM |
3943 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
3944 | segment. */ | |
3945 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; | |
3946 | if (eh_frame_hdr != NULL | |
3947 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
252b5132 | 3948 | { |
dc810e39 | 3949 | amt = sizeof (struct elf_segment_map); |
a50b1753 | 3950 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
252b5132 RH |
3951 | if (m == NULL) |
3952 | goto error_return; | |
3953 | m->next = NULL; | |
8ded5a0f | 3954 | m->p_type = PT_GNU_EH_FRAME; |
252b5132 | 3955 | m->count = 1; |
8ded5a0f | 3956 | m->sections[0] = eh_frame_hdr->output_section; |
252b5132 RH |
3957 | |
3958 | *pm = m; | |
3959 | pm = &m->next; | |
3960 | } | |
13ae64f3 | 3961 | |
8ded5a0f | 3962 | if (elf_tdata (abfd)->stack_flags) |
13ae64f3 | 3963 | { |
8ded5a0f | 3964 | amt = sizeof (struct elf_segment_map); |
a50b1753 | 3965 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
8ded5a0f AM |
3966 | if (m == NULL) |
3967 | goto error_return; | |
3968 | m->next = NULL; | |
2b05f1b7 | 3969 | m->p_type = PT_GNU_STACK; |
8ded5a0f AM |
3970 | m->p_flags = elf_tdata (abfd)->stack_flags; |
3971 | m->p_flags_valid = 1; | |
252b5132 | 3972 | |
8ded5a0f AM |
3973 | *pm = m; |
3974 | pm = &m->next; | |
3975 | } | |
65765700 | 3976 | |
ceae84aa | 3977 | if (info != NULL && info->relro) |
8ded5a0f | 3978 | { |
f210dcff L |
3979 | for (m = mfirst; m != NULL; m = m->next) |
3980 | { | |
3981 | if (m->p_type == PT_LOAD) | |
3982 | { | |
3983 | asection *last = m->sections[m->count - 1]; | |
3984 | bfd_vma vaddr = m->sections[0]->vma; | |
3985 | bfd_vma filesz = last->vma - vaddr + last->size; | |
65765700 | 3986 | |
f210dcff L |
3987 | if (vaddr < info->relro_end |
3988 | && vaddr >= info->relro_start | |
3989 | && (vaddr + filesz) >= info->relro_end) | |
3990 | break; | |
3991 | } | |
3992 | } | |
3993 | ||
3994 | /* Make a PT_GNU_RELRO segment only when it isn't empty. */ | |
3995 | if (m != NULL) | |
3996 | { | |
3997 | amt = sizeof (struct elf_segment_map); | |
a50b1753 | 3998 | m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); |
f210dcff L |
3999 | if (m == NULL) |
4000 | goto error_return; | |
4001 | m->next = NULL; | |
4002 | m->p_type = PT_GNU_RELRO; | |
4003 | m->p_flags = PF_R; | |
4004 | m->p_flags_valid = 1; | |
4005 | ||
4006 | *pm = m; | |
4007 | pm = &m->next; | |
4008 | } | |
8ded5a0f | 4009 | } |
9ee5e499 | 4010 | |
8ded5a0f AM |
4011 | free (sections); |
4012 | elf_tdata (abfd)->segment_map = mfirst; | |
9ee5e499 JJ |
4013 | } |
4014 | ||
3dea8fca | 4015 | if (!elf_modify_segment_map (abfd, info, no_user_phdrs)) |
8ded5a0f | 4016 | return FALSE; |
8c37241b | 4017 | |
8ded5a0f AM |
4018 | for (count = 0, m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
4019 | ++count; | |
4020 | elf_tdata (abfd)->program_header_size = count * bed->s->sizeof_phdr; | |
252b5132 | 4021 | |
b34976b6 | 4022 | return TRUE; |
252b5132 RH |
4023 | |
4024 | error_return: | |
4025 | if (sections != NULL) | |
4026 | free (sections); | |
b34976b6 | 4027 | return FALSE; |
252b5132 RH |
4028 | } |
4029 | ||
4030 | /* Sort sections by address. */ | |
4031 | ||
4032 | static int | |
217aa764 | 4033 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
4034 | { |
4035 | const asection *sec1 = *(const asection **) arg1; | |
4036 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 4037 | bfd_size_type size1, size2; |
252b5132 RH |
4038 | |
4039 | /* Sort by LMA first, since this is the address used to | |
4040 | place the section into a segment. */ | |
4041 | if (sec1->lma < sec2->lma) | |
4042 | return -1; | |
4043 | else if (sec1->lma > sec2->lma) | |
4044 | return 1; | |
4045 | ||
4046 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
4047 | the same, and this will do nothing. */ | |
4048 | if (sec1->vma < sec2->vma) | |
4049 | return -1; | |
4050 | else if (sec1->vma > sec2->vma) | |
4051 | return 1; | |
4052 | ||
4053 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
4054 | ||
07c6e936 | 4055 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
4056 | |
4057 | if (TOEND (sec1)) | |
4058 | { | |
4059 | if (TOEND (sec2)) | |
00a7cdc5 NC |
4060 | { |
4061 | /* If the indicies are the same, do not return 0 | |
4062 | here, but continue to try the next comparison. */ | |
4063 | if (sec1->target_index - sec2->target_index != 0) | |
4064 | return sec1->target_index - sec2->target_index; | |
4065 | } | |
252b5132 RH |
4066 | else |
4067 | return 1; | |
4068 | } | |
00a7cdc5 | 4069 | else if (TOEND (sec2)) |
252b5132 RH |
4070 | return -1; |
4071 | ||
4072 | #undef TOEND | |
4073 | ||
00a7cdc5 NC |
4074 | /* Sort by size, to put zero sized sections |
4075 | before others at the same address. */ | |
252b5132 | 4076 | |
eea6121a AM |
4077 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
4078 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
4079 | |
4080 | if (size1 < size2) | |
252b5132 | 4081 | return -1; |
eecdbe52 | 4082 | if (size1 > size2) |
252b5132 RH |
4083 | return 1; |
4084 | ||
4085 | return sec1->target_index - sec2->target_index; | |
4086 | } | |
4087 | ||
340b6d91 AC |
4088 | /* Ian Lance Taylor writes: |
4089 | ||
4090 | We shouldn't be using % with a negative signed number. That's just | |
4091 | not good. We have to make sure either that the number is not | |
4092 | negative, or that the number has an unsigned type. When the types | |
4093 | are all the same size they wind up as unsigned. When file_ptr is a | |
4094 | larger signed type, the arithmetic winds up as signed long long, | |
4095 | which is wrong. | |
4096 | ||
4097 | What we're trying to say here is something like ``increase OFF by | |
4098 | the least amount that will cause it to be equal to the VMA modulo | |
4099 | the page size.'' */ | |
4100 | /* In other words, something like: | |
4101 | ||
4102 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
4103 | off_offset = off % bed->maxpagesize; | |
4104 | if (vma_offset < off_offset) | |
4105 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4106 | else | |
4107 | adjustment = vma_offset - off_offset; | |
08a40648 | 4108 | |
340b6d91 AC |
4109 | which can can be collapsed into the expression below. */ |
4110 | ||
4111 | static file_ptr | |
4112 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4113 | { | |
4114 | return ((vma - off) % maxpagesize); | |
4115 | } | |
4116 | ||
6d33f217 L |
4117 | static void |
4118 | print_segment_map (const struct elf_segment_map *m) | |
4119 | { | |
4120 | unsigned int j; | |
4121 | const char *pt = get_segment_type (m->p_type); | |
4122 | char buf[32]; | |
4123 | ||
4124 | if (pt == NULL) | |
4125 | { | |
4126 | if (m->p_type >= PT_LOPROC && m->p_type <= PT_HIPROC) | |
4127 | sprintf (buf, "LOPROC+%7.7x", | |
4128 | (unsigned int) (m->p_type - PT_LOPROC)); | |
4129 | else if (m->p_type >= PT_LOOS && m->p_type <= PT_HIOS) | |
4130 | sprintf (buf, "LOOS+%7.7x", | |
4131 | (unsigned int) (m->p_type - PT_LOOS)); | |
4132 | else | |
4133 | snprintf (buf, sizeof (buf), "%8.8x", | |
4134 | (unsigned int) m->p_type); | |
4135 | pt = buf; | |
4136 | } | |
4137 | fprintf (stderr, "%s:", pt); | |
4138 | for (j = 0; j < m->count; j++) | |
4139 | fprintf (stderr, " %s", m->sections [j]->name); | |
4140 | putc ('\n',stderr); | |
4141 | } | |
4142 | ||
32812159 AM |
4143 | static bfd_boolean |
4144 | write_zeros (bfd *abfd, file_ptr pos, bfd_size_type len) | |
4145 | { | |
4146 | void *buf; | |
4147 | bfd_boolean ret; | |
4148 | ||
4149 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
4150 | return FALSE; | |
4151 | buf = bfd_zmalloc (len); | |
4152 | if (buf == NULL) | |
4153 | return FALSE; | |
4154 | ret = bfd_bwrite (buf, len, abfd) == len; | |
4155 | free (buf); | |
4156 | return ret; | |
4157 | } | |
4158 | ||
252b5132 RH |
4159 | /* Assign file positions to the sections based on the mapping from |
4160 | sections to segments. This function also sets up some fields in | |
f3520d2f | 4161 | the file header. */ |
252b5132 | 4162 | |
b34976b6 | 4163 | static bfd_boolean |
f3520d2f AM |
4164 | assign_file_positions_for_load_sections (bfd *abfd, |
4165 | struct bfd_link_info *link_info) | |
252b5132 RH |
4166 | { |
4167 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 4168 | struct elf_segment_map *m; |
252b5132 | 4169 | Elf_Internal_Phdr *phdrs; |
252b5132 | 4170 | Elf_Internal_Phdr *p; |
02bf8d82 | 4171 | file_ptr off; |
3f570048 | 4172 | bfd_size_type maxpagesize; |
f3520d2f | 4173 | unsigned int alloc; |
0920dee7 | 4174 | unsigned int i, j; |
2b0bc088 | 4175 | bfd_vma header_pad = 0; |
252b5132 | 4176 | |
e36284ab | 4177 | if (link_info == NULL |
ceae84aa | 4178 | && !_bfd_elf_map_sections_to_segments (abfd, link_info)) |
8ded5a0f | 4179 | return FALSE; |
252b5132 | 4180 | |
8ded5a0f | 4181 | alloc = 0; |
252b5132 | 4182 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
2b0bc088 NC |
4183 | { |
4184 | ++alloc; | |
4185 | if (m->header_size) | |
4186 | header_pad = m->header_size; | |
4187 | } | |
252b5132 RH |
4188 | |
4189 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4190 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
8ded5a0f | 4191 | elf_elfheader (abfd)->e_phnum = alloc; |
252b5132 | 4192 | |
62d7a5f6 | 4193 | if (elf_tdata (abfd)->program_header_size == (bfd_size_type) -1) |
8ded5a0f AM |
4194 | elf_tdata (abfd)->program_header_size = alloc * bed->s->sizeof_phdr; |
4195 | else | |
4196 | BFD_ASSERT (elf_tdata (abfd)->program_header_size | |
59e0647f | 4197 | >= alloc * bed->s->sizeof_phdr); |
252b5132 RH |
4198 | |
4199 | if (alloc == 0) | |
f3520d2f | 4200 | { |
8ded5a0f AM |
4201 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; |
4202 | return TRUE; | |
f3520d2f | 4203 | } |
252b5132 | 4204 | |
57268894 HPN |
4205 | /* We're writing the size in elf_tdata (abfd)->program_header_size, |
4206 | see assign_file_positions_except_relocs, so make sure we have | |
4207 | that amount allocated, with trailing space cleared. | |
4208 | The variable alloc contains the computed need, while elf_tdata | |
4209 | (abfd)->program_header_size contains the size used for the | |
4210 | layout. | |
4211 | See ld/emultempl/elf-generic.em:gld${EMULATION_NAME}_map_segments | |
4212 | where the layout is forced to according to a larger size in the | |
4213 | last iterations for the testcase ld-elf/header. */ | |
4214 | BFD_ASSERT (elf_tdata (abfd)->program_header_size % bed->s->sizeof_phdr | |
4215 | == 0); | |
a50b1753 NC |
4216 | phdrs = (Elf_Internal_Phdr *) |
4217 | bfd_zalloc2 (abfd, | |
4218 | (elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr), | |
4219 | sizeof (Elf_Internal_Phdr)); | |
f3520d2f | 4220 | elf_tdata (abfd)->phdr = phdrs; |
252b5132 | 4221 | if (phdrs == NULL) |
b34976b6 | 4222 | return FALSE; |
252b5132 | 4223 | |
3f570048 AM |
4224 | maxpagesize = 1; |
4225 | if ((abfd->flags & D_PAGED) != 0) | |
4226 | maxpagesize = bed->maxpagesize; | |
4227 | ||
252b5132 RH |
4228 | off = bed->s->sizeof_ehdr; |
4229 | off += alloc * bed->s->sizeof_phdr; | |
2b0bc088 NC |
4230 | if (header_pad < (bfd_vma) off) |
4231 | header_pad = 0; | |
4232 | else | |
4233 | header_pad -= off; | |
4234 | off += header_pad; | |
252b5132 | 4235 | |
0920dee7 | 4236 | for (m = elf_tdata (abfd)->segment_map, p = phdrs, j = 0; |
252b5132 | 4237 | m != NULL; |
0920dee7 | 4238 | m = m->next, p++, j++) |
252b5132 | 4239 | { |
252b5132 | 4240 | asection **secpp; |
bf988460 AM |
4241 | bfd_vma off_adjust; |
4242 | bfd_boolean no_contents; | |
252b5132 RH |
4243 | |
4244 | /* If elf_segment_map is not from map_sections_to_segments, the | |
08a40648 | 4245 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4246 | not be done to the PT_NOTE section of a corefile, which may |
4247 | contain several pseudo-sections artificially created by bfd. | |
4248 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4249 | if (m->count > 1 |
4250 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4251 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4252 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4253 | elf_sort_sections); | |
4254 | ||
b301b248 AM |
4255 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4256 | number of sections with contents contributing to both p_filesz | |
4257 | and p_memsz, followed by a number of sections with no contents | |
4258 | that just contribute to p_memsz. In this loop, OFF tracks next | |
02bf8d82 | 4259 | available file offset for PT_LOAD and PT_NOTE segments. */ |
252b5132 | 4260 | p->p_type = m->p_type; |
28a7f3e7 | 4261 | p->p_flags = m->p_flags; |
252b5132 | 4262 | |
3f570048 AM |
4263 | if (m->count == 0) |
4264 | p->p_vaddr = 0; | |
4265 | else | |
3271a814 | 4266 | p->p_vaddr = m->sections[0]->vma - m->p_vaddr_offset; |
3f570048 AM |
4267 | |
4268 | if (m->p_paddr_valid) | |
4269 | p->p_paddr = m->p_paddr; | |
4270 | else if (m->count == 0) | |
4271 | p->p_paddr = 0; | |
4272 | else | |
08a40648 | 4273 | p->p_paddr = m->sections[0]->lma - m->p_vaddr_offset; |
3f570048 AM |
4274 | |
4275 | if (p->p_type == PT_LOAD | |
4276 | && (abfd->flags & D_PAGED) != 0) | |
4277 | { | |
4278 | /* p_align in demand paged PT_LOAD segments effectively stores | |
4279 | the maximum page size. When copying an executable with | |
4280 | objcopy, we set m->p_align from the input file. Use this | |
4281 | value for maxpagesize rather than bed->maxpagesize, which | |
4282 | may be different. Note that we use maxpagesize for PT_TLS | |
4283 | segment alignment later in this function, so we are relying | |
4284 | on at least one PT_LOAD segment appearing before a PT_TLS | |
4285 | segment. */ | |
4286 | if (m->p_align_valid) | |
4287 | maxpagesize = m->p_align; | |
4288 | ||
4289 | p->p_align = maxpagesize; | |
4290 | } | |
3271a814 NS |
4291 | else if (m->p_align_valid) |
4292 | p->p_align = m->p_align; | |
e970b90a DJ |
4293 | else if (m->count == 0) |
4294 | p->p_align = 1 << bed->s->log_file_align; | |
3f570048 AM |
4295 | else |
4296 | p->p_align = 0; | |
4297 | ||
bf988460 AM |
4298 | no_contents = FALSE; |
4299 | off_adjust = 0; | |
252b5132 | 4300 | if (p->p_type == PT_LOAD |
b301b248 | 4301 | && m->count > 0) |
252b5132 | 4302 | { |
b301b248 | 4303 | bfd_size_type align; |
a49e53ed | 4304 | unsigned int align_power = 0; |
b301b248 | 4305 | |
3271a814 NS |
4306 | if (m->p_align_valid) |
4307 | align = p->p_align; | |
4308 | else | |
252b5132 | 4309 | { |
3271a814 NS |
4310 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4311 | { | |
4312 | unsigned int secalign; | |
08a40648 | 4313 | |
3271a814 NS |
4314 | secalign = bfd_get_section_alignment (abfd, *secpp); |
4315 | if (secalign > align_power) | |
4316 | align_power = secalign; | |
4317 | } | |
4318 | align = (bfd_size_type) 1 << align_power; | |
4319 | if (align < maxpagesize) | |
4320 | align = maxpagesize; | |
b301b248 | 4321 | } |
252b5132 | 4322 | |
02bf8d82 AM |
4323 | for (i = 0; i < m->count; i++) |
4324 | if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
4325 | /* If we aren't making room for this section, then | |
4326 | it must be SHT_NOBITS regardless of what we've | |
4327 | set via struct bfd_elf_special_section. */ | |
4328 | elf_section_type (m->sections[i]) = SHT_NOBITS; | |
4329 | ||
bf988460 | 4330 | /* Find out whether this segment contains any loadable |
aea274d3 AM |
4331 | sections. */ |
4332 | no_contents = TRUE; | |
4333 | for (i = 0; i < m->count; i++) | |
4334 | if (elf_section_type (m->sections[i]) != SHT_NOBITS) | |
4335 | { | |
4336 | no_contents = FALSE; | |
4337 | break; | |
4338 | } | |
bf988460 AM |
4339 | |
4340 | off_adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); | |
4341 | off += off_adjust; | |
4342 | if (no_contents) | |
4343 | { | |
4344 | /* We shouldn't need to align the segment on disk since | |
4345 | the segment doesn't need file space, but the gABI | |
4346 | arguably requires the alignment and glibc ld.so | |
4347 | checks it. So to comply with the alignment | |
4348 | requirement but not waste file space, we adjust | |
4349 | p_offset for just this segment. (OFF_ADJUST is | |
4350 | subtracted from OFF later.) This may put p_offset | |
4351 | past the end of file, but that shouldn't matter. */ | |
4352 | } | |
4353 | else | |
4354 | off_adjust = 0; | |
252b5132 | 4355 | } |
b1a6d0b1 NC |
4356 | /* Make sure the .dynamic section is the first section in the |
4357 | PT_DYNAMIC segment. */ | |
4358 | else if (p->p_type == PT_DYNAMIC | |
4359 | && m->count > 1 | |
4360 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4361 | { | |
4362 | _bfd_error_handler | |
b301b248 AM |
4363 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4364 | abfd); | |
b1a6d0b1 NC |
4365 | bfd_set_error (bfd_error_bad_value); |
4366 | return FALSE; | |
4367 | } | |
3f001e84 JK |
4368 | /* Set the note section type to SHT_NOTE. */ |
4369 | else if (p->p_type == PT_NOTE) | |
4370 | for (i = 0; i < m->count; i++) | |
4371 | elf_section_type (m->sections[i]) = SHT_NOTE; | |
252b5132 | 4372 | |
252b5132 RH |
4373 | p->p_offset = 0; |
4374 | p->p_filesz = 0; | |
4375 | p->p_memsz = 0; | |
4376 | ||
4377 | if (m->includes_filehdr) | |
4378 | { | |
bf988460 | 4379 | if (!m->p_flags_valid) |
252b5132 | 4380 | p->p_flags |= PF_R; |
252b5132 RH |
4381 | p->p_filesz = bed->s->sizeof_ehdr; |
4382 | p->p_memsz = bed->s->sizeof_ehdr; | |
4383 | if (m->count > 0) | |
4384 | { | |
4385 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4386 | ||
4387 | if (p->p_vaddr < (bfd_vma) off) | |
4388 | { | |
caf47ea6 | 4389 | (*_bfd_error_handler) |
b301b248 AM |
4390 | (_("%B: Not enough room for program headers, try linking with -N"), |
4391 | abfd); | |
252b5132 | 4392 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4393 | return FALSE; |
252b5132 RH |
4394 | } |
4395 | ||
4396 | p->p_vaddr -= off; | |
bf988460 | 4397 | if (!m->p_paddr_valid) |
252b5132 RH |
4398 | p->p_paddr -= off; |
4399 | } | |
252b5132 RH |
4400 | } |
4401 | ||
4402 | if (m->includes_phdrs) | |
4403 | { | |
bf988460 | 4404 | if (!m->p_flags_valid) |
252b5132 RH |
4405 | p->p_flags |= PF_R; |
4406 | ||
f3520d2f | 4407 | if (!m->includes_filehdr) |
252b5132 RH |
4408 | { |
4409 | p->p_offset = bed->s->sizeof_ehdr; | |
4410 | ||
4411 | if (m->count > 0) | |
4412 | { | |
4413 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4414 | p->p_vaddr -= off - p->p_offset; | |
bf988460 | 4415 | if (!m->p_paddr_valid) |
252b5132 RH |
4416 | p->p_paddr -= off - p->p_offset; |
4417 | } | |
252b5132 RH |
4418 | } |
4419 | ||
4420 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4421 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
2b0bc088 NC |
4422 | if (m->count) |
4423 | { | |
4424 | p->p_filesz += header_pad; | |
4425 | p->p_memsz += header_pad; | |
4426 | } | |
252b5132 RH |
4427 | } |
4428 | ||
4429 | if (p->p_type == PT_LOAD | |
4430 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4431 | { | |
bf988460 | 4432 | if (!m->includes_filehdr && !m->includes_phdrs) |
02bf8d82 | 4433 | p->p_offset = off; |
252b5132 RH |
4434 | else |
4435 | { | |
4436 | file_ptr adjust; | |
4437 | ||
4438 | adjust = off - (p->p_offset + p->p_filesz); | |
bf988460 AM |
4439 | if (!no_contents) |
4440 | p->p_filesz += adjust; | |
252b5132 RH |
4441 | p->p_memsz += adjust; |
4442 | } | |
4443 | } | |
4444 | ||
1ea63fd2 AM |
4445 | /* Set up p_filesz, p_memsz, p_align and p_flags from the section |
4446 | maps. Set filepos for sections in PT_LOAD segments, and in | |
4447 | core files, for sections in PT_NOTE segments. | |
4448 | assign_file_positions_for_non_load_sections will set filepos | |
4449 | for other sections and update p_filesz for other segments. */ | |
252b5132 RH |
4450 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4451 | { | |
4452 | asection *sec; | |
252b5132 | 4453 | bfd_size_type align; |
627b32bc | 4454 | Elf_Internal_Shdr *this_hdr; |
252b5132 RH |
4455 | |
4456 | sec = *secpp; | |
02bf8d82 | 4457 | this_hdr = &elf_section_data (sec)->this_hdr; |
3f570048 | 4458 | align = (bfd_size_type) 1 << bfd_get_section_alignment (abfd, sec); |
252b5132 | 4459 | |
88967714 AM |
4460 | if ((p->p_type == PT_LOAD |
4461 | || p->p_type == PT_TLS) | |
4462 | && (this_hdr->sh_type != SHT_NOBITS | |
4463 | || ((this_hdr->sh_flags & SHF_ALLOC) != 0 | |
4464 | && ((this_hdr->sh_flags & SHF_TLS) == 0 | |
4465 | || p->p_type == PT_TLS)))) | |
252b5132 | 4466 | { |
b5599592 AM |
4467 | bfd_vma p_start = p->p_paddr; |
4468 | bfd_vma p_end = p_start + p->p_memsz; | |
4469 | bfd_vma s_start = sec->lma; | |
4470 | bfd_vma adjust = s_start - p_end; | |
252b5132 | 4471 | |
b5599592 AM |
4472 | if (s_start < p_end |
4473 | || p_end < p_start) | |
252b5132 | 4474 | { |
88967714 | 4475 | (*_bfd_error_handler) |
b5599592 AM |
4476 | (_("%B: section %A lma %#lx adjusted to %#lx"), abfd, sec, |
4477 | (unsigned long) s_start, (unsigned long) p_end); | |
88967714 | 4478 | adjust = 0; |
b5599592 | 4479 | sec->lma = p_end; |
1cfb7d1e | 4480 | } |
3ac9b6c9 | 4481 | p->p_memsz += adjust; |
1cfb7d1e | 4482 | |
88967714 AM |
4483 | if (this_hdr->sh_type != SHT_NOBITS) |
4484 | { | |
32812159 AM |
4485 | if (p->p_filesz + adjust < p->p_memsz) |
4486 | { | |
4487 | /* We have a PROGBITS section following NOBITS ones. | |
4488 | Allocate file space for the NOBITS section(s) and | |
4489 | zero it. */ | |
4490 | adjust = p->p_memsz - p->p_filesz; | |
4491 | if (!write_zeros (abfd, off, adjust)) | |
4492 | return FALSE; | |
4493 | } | |
88967714 AM |
4494 | off += adjust; |
4495 | p->p_filesz += adjust; | |
252b5132 | 4496 | } |
252b5132 RH |
4497 | } |
4498 | ||
4499 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4500 | { | |
b301b248 AM |
4501 | /* The section at i == 0 is the one that actually contains |
4502 | everything. */ | |
4a938328 MS |
4503 | if (i == 0) |
4504 | { | |
627b32bc | 4505 | this_hdr->sh_offset = sec->filepos = off; |
6a3cd2b4 AM |
4506 | off += this_hdr->sh_size; |
4507 | p->p_filesz = this_hdr->sh_size; | |
b301b248 AM |
4508 | p->p_memsz = 0; |
4509 | p->p_align = 1; | |
252b5132 | 4510 | } |
4a938328 | 4511 | else |
252b5132 | 4512 | { |
b301b248 | 4513 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4514 | sec->filepos = 0; |
eea6121a | 4515 | sec->size = 0; |
b301b248 AM |
4516 | sec->flags = 0; |
4517 | continue; | |
252b5132 | 4518 | } |
252b5132 RH |
4519 | } |
4520 | else | |
4521 | { | |
b301b248 AM |
4522 | if (p->p_type == PT_LOAD) |
4523 | { | |
02bf8d82 AM |
4524 | this_hdr->sh_offset = sec->filepos = off; |
4525 | if (this_hdr->sh_type != SHT_NOBITS) | |
6a3cd2b4 | 4526 | off += this_hdr->sh_size; |
b301b248 | 4527 | } |
252b5132 | 4528 | |
02bf8d82 | 4529 | if (this_hdr->sh_type != SHT_NOBITS) |
b301b248 | 4530 | { |
6a3cd2b4 | 4531 | p->p_filesz += this_hdr->sh_size; |
02bf8d82 AM |
4532 | /* A load section without SHF_ALLOC is something like |
4533 | a note section in a PT_NOTE segment. These take | |
4534 | file space but are not loaded into memory. */ | |
4535 | if ((this_hdr->sh_flags & SHF_ALLOC) != 0) | |
6a3cd2b4 | 4536 | p->p_memsz += this_hdr->sh_size; |
b301b248 | 4537 | } |
6a3cd2b4 | 4538 | else if ((this_hdr->sh_flags & SHF_ALLOC) != 0) |
13ae64f3 | 4539 | { |
6a3cd2b4 AM |
4540 | if (p->p_type == PT_TLS) |
4541 | p->p_memsz += this_hdr->sh_size; | |
4542 | ||
4543 | /* .tbss is special. It doesn't contribute to p_memsz of | |
4544 | normal segments. */ | |
4545 | else if ((this_hdr->sh_flags & SHF_TLS) == 0) | |
4546 | p->p_memsz += this_hdr->sh_size; | |
13ae64f3 JJ |
4547 | } |
4548 | ||
b10a8ae0 L |
4549 | if (align > p->p_align |
4550 | && !m->p_align_valid | |
4551 | && (p->p_type != PT_LOAD | |
4552 | || (abfd->flags & D_PAGED) == 0)) | |
252b5132 RH |
4553 | p->p_align = align; |
4554 | } | |
4555 | ||
bf988460 | 4556 | if (!m->p_flags_valid) |
252b5132 RH |
4557 | { |
4558 | p->p_flags |= PF_R; | |
02bf8d82 | 4559 | if ((this_hdr->sh_flags & SHF_EXECINSTR) != 0) |
252b5132 | 4560 | p->p_flags |= PF_X; |
02bf8d82 | 4561 | if ((this_hdr->sh_flags & SHF_WRITE) != 0) |
252b5132 RH |
4562 | p->p_flags |= PF_W; |
4563 | } | |
4564 | } | |
bf988460 | 4565 | off -= off_adjust; |
0920dee7 | 4566 | |
7c928300 AM |
4567 | /* Check that all sections are in a PT_LOAD segment. |
4568 | Don't check funky gdb generated core files. */ | |
4569 | if (p->p_type == PT_LOAD && bfd_get_format (abfd) != bfd_core) | |
9a83a553 AM |
4570 | { |
4571 | bfd_boolean check_vma = TRUE; | |
4572 | ||
4573 | for (i = 1; i < m->count; i++) | |
4574 | if (m->sections[i]->vma == m->sections[i - 1]->vma | |
4575 | && ELF_SECTION_SIZE (&(elf_section_data (m->sections[i]) | |
4576 | ->this_hdr), p) != 0 | |
4577 | && ELF_SECTION_SIZE (&(elf_section_data (m->sections[i - 1]) | |
4578 | ->this_hdr), p) != 0) | |
0920dee7 | 4579 | { |
9a83a553 AM |
4580 | /* Looks like we have overlays packed into the segment. */ |
4581 | check_vma = FALSE; | |
4582 | break; | |
0920dee7 | 4583 | } |
9a83a553 AM |
4584 | |
4585 | for (i = 0; i < m->count; i++) | |
4586 | { | |
4587 | Elf_Internal_Shdr *this_hdr; | |
4588 | asection *sec; | |
4589 | ||
4590 | sec = m->sections[i]; | |
4591 | this_hdr = &(elf_section_data(sec)->this_hdr); | |
4592 | if (this_hdr->sh_size != 0 | |
4593 | && !ELF_SECTION_IN_SEGMENT_1 (this_hdr, p, check_vma)) | |
4594 | { | |
4595 | (*_bfd_error_handler) | |
4596 | (_("%B: section `%A' can't be allocated in segment %d"), | |
4597 | abfd, sec, j); | |
4598 | print_segment_map (m); | |
4599 | } | |
4600 | } | |
4601 | } | |
252b5132 RH |
4602 | } |
4603 | ||
f3520d2f AM |
4604 | elf_tdata (abfd)->next_file_pos = off; |
4605 | return TRUE; | |
4606 | } | |
4607 | ||
4608 | /* Assign file positions for the other sections. */ | |
4609 | ||
4610 | static bfd_boolean | |
4611 | assign_file_positions_for_non_load_sections (bfd *abfd, | |
4612 | struct bfd_link_info *link_info) | |
4613 | { | |
4614 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4615 | Elf_Internal_Shdr **i_shdrpp; | |
4616 | Elf_Internal_Shdr **hdrpp; | |
4617 | Elf_Internal_Phdr *phdrs; | |
4618 | Elf_Internal_Phdr *p; | |
4619 | struct elf_segment_map *m; | |
4620 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4621 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4622 | file_ptr off; | |
4623 | unsigned int num_sec; | |
4624 | unsigned int i; | |
4625 | unsigned int count; | |
4626 | ||
5c182d5f AM |
4627 | i_shdrpp = elf_elfsections (abfd); |
4628 | num_sec = elf_numsections (abfd); | |
f3520d2f | 4629 | off = elf_tdata (abfd)->next_file_pos; |
5c182d5f AM |
4630 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
4631 | { | |
4632 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
4633 | Elf_Internal_Shdr *hdr; | |
4634 | ||
4635 | hdr = *hdrpp; | |
4636 | if (hdr->bfd_section != NULL | |
252e386e AM |
4637 | && (hdr->bfd_section->filepos != 0 |
4638 | || (hdr->sh_type == SHT_NOBITS | |
4639 | && hdr->contents == NULL))) | |
627b32bc | 4640 | BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos); |
5c182d5f AM |
4641 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) |
4642 | { | |
49c13adb L |
4643 | if (hdr->sh_size != 0) |
4644 | ((*_bfd_error_handler) | |
4645 | (_("%B: warning: allocated section `%s' not in segment"), | |
3ba71138 L |
4646 | abfd, |
4647 | (hdr->bfd_section == NULL | |
4648 | ? "*unknown*" | |
4649 | : hdr->bfd_section->name))); | |
4650 | /* We don't need to page align empty sections. */ | |
4651 | if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0) | |
5c182d5f AM |
4652 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4653 | bed->maxpagesize); | |
4654 | else | |
4655 | off += vma_page_aligned_bias (hdr->sh_addr, off, | |
4656 | hdr->sh_addralign); | |
4657 | off = _bfd_elf_assign_file_position_for_section (hdr, off, | |
4658 | FALSE); | |
4659 | } | |
4660 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) | |
4661 | && hdr->bfd_section == NULL) | |
4662 | || hdr == i_shdrpp[tdata->symtab_section] | |
4663 | || hdr == i_shdrpp[tdata->symtab_shndx_section] | |
4664 | || hdr == i_shdrpp[tdata->strtab_section]) | |
4665 | hdr->sh_offset = -1; | |
4666 | else | |
4667 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); | |
5c182d5f AM |
4668 | } |
4669 | ||
252b5132 RH |
4670 | /* Now that we have set the section file positions, we can set up |
4671 | the file positions for the non PT_LOAD segments. */ | |
f3520d2f AM |
4672 | count = 0; |
4673 | filehdr_vaddr = 0; | |
4674 | filehdr_paddr = 0; | |
4675 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4676 | phdrs_paddr = 0; | |
4677 | phdrs = elf_tdata (abfd)->phdr; | |
4678 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4679 | m != NULL; | |
4680 | m = m->next, p++) | |
4681 | { | |
4682 | ++count; | |
4683 | if (p->p_type != PT_LOAD) | |
4684 | continue; | |
4685 | ||
4686 | if (m->includes_filehdr) | |
4687 | { | |
4688 | filehdr_vaddr = p->p_vaddr; | |
4689 | filehdr_paddr = p->p_paddr; | |
4690 | } | |
4691 | if (m->includes_phdrs) | |
4692 | { | |
4693 | phdrs_vaddr = p->p_vaddr; | |
4694 | phdrs_paddr = p->p_paddr; | |
4695 | if (m->includes_filehdr) | |
4696 | { | |
4697 | phdrs_vaddr += bed->s->sizeof_ehdr; | |
4698 | phdrs_paddr += bed->s->sizeof_ehdr; | |
4699 | } | |
4700 | } | |
4701 | } | |
4702 | ||
252b5132 RH |
4703 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; |
4704 | m != NULL; | |
4705 | m = m->next, p++) | |
4706 | { | |
129af99f | 4707 | if (p->p_type == PT_GNU_RELRO) |
252b5132 | 4708 | { |
b84a33b5 AM |
4709 | const Elf_Internal_Phdr *lp; |
4710 | ||
129af99f | 4711 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); |
1ea63fd2 | 4712 | |
129af99f | 4713 | if (link_info != NULL) |
8c37241b | 4714 | { |
129af99f AS |
4715 | /* During linking the range of the RELRO segment is passed |
4716 | in link_info. */ | |
8c37241b JJ |
4717 | for (lp = phdrs; lp < phdrs + count; ++lp) |
4718 | { | |
4719 | if (lp->p_type == PT_LOAD | |
8c37241b | 4720 | && lp->p_vaddr >= link_info->relro_start |
b84a33b5 AM |
4721 | && lp->p_vaddr < link_info->relro_end |
4722 | && lp->p_vaddr + lp->p_filesz >= link_info->relro_end) | |
8c37241b JJ |
4723 | break; |
4724 | } | |
8c37241b | 4725 | } |
129af99f AS |
4726 | else |
4727 | { | |
4728 | /* Otherwise we are copying an executable or shared | |
b84a33b5 | 4729 | library, but we need to use the same linker logic. */ |
129af99f AS |
4730 | for (lp = phdrs; lp < phdrs + count; ++lp) |
4731 | { | |
4732 | if (lp->p_type == PT_LOAD | |
4733 | && lp->p_paddr == p->p_paddr) | |
4734 | break; | |
4735 | } | |
b84a33b5 AM |
4736 | } |
4737 | ||
4738 | if (lp < phdrs + count) | |
4739 | { | |
4740 | p->p_vaddr = lp->p_vaddr; | |
4741 | p->p_paddr = lp->p_paddr; | |
4742 | p->p_offset = lp->p_offset; | |
4743 | if (link_info != NULL) | |
4744 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4745 | else if (m->p_size_valid) | |
4746 | p->p_filesz = m->p_size; | |
129af99f AS |
4747 | else |
4748 | abort (); | |
b84a33b5 AM |
4749 | p->p_memsz = p->p_filesz; |
4750 | p->p_align = 1; | |
4751 | p->p_flags = (lp->p_flags & ~PF_W); | |
129af99f | 4752 | } |
9433b9b1 | 4753 | else |
b84a33b5 AM |
4754 | { |
4755 | memset (p, 0, sizeof *p); | |
4756 | p->p_type = PT_NULL; | |
4757 | } | |
129af99f AS |
4758 | } |
4759 | else if (m->count != 0) | |
4760 | { | |
4761 | if (p->p_type != PT_LOAD | |
4762 | && (p->p_type != PT_NOTE | |
4763 | || bfd_get_format (abfd) != bfd_core)) | |
4764 | { | |
4765 | Elf_Internal_Shdr *hdr; | |
4766 | asection *sect; | |
4767 | ||
4768 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); | |
4769 | ||
4770 | sect = m->sections[m->count - 1]; | |
4771 | hdr = &elf_section_data (sect)->this_hdr; | |
4772 | p->p_filesz = sect->filepos - m->sections[0]->filepos; | |
4773 | if (hdr->sh_type != SHT_NOBITS) | |
4774 | p->p_filesz += hdr->sh_size; | |
4775 | p->p_offset = m->sections[0]->filepos; | |
4776 | } | |
4777 | } | |
4778 | else if (m->includes_filehdr) | |
4779 | { | |
4780 | p->p_vaddr = filehdr_vaddr; | |
4781 | if (! m->p_paddr_valid) | |
4782 | p->p_paddr = filehdr_paddr; | |
4783 | } | |
4784 | else if (m->includes_phdrs) | |
4785 | { | |
4786 | p->p_vaddr = phdrs_vaddr; | |
4787 | if (! m->p_paddr_valid) | |
4788 | p->p_paddr = phdrs_paddr; | |
252b5132 RH |
4789 | } |
4790 | } | |
4791 | ||
252b5132 RH |
4792 | elf_tdata (abfd)->next_file_pos = off; |
4793 | ||
b34976b6 | 4794 | return TRUE; |
252b5132 RH |
4795 | } |
4796 | ||
252b5132 RH |
4797 | /* Work out the file positions of all the sections. This is called by |
4798 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4799 | VMAs must be known before this is called. | |
4800 | ||
e0638f70 AM |
4801 | Reloc sections come in two flavours: Those processed specially as |
4802 | "side-channel" data attached to a section to which they apply, and | |
4803 | those that bfd doesn't process as relocations. The latter sort are | |
4804 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4805 | consider the former sort here, unless they form part of the loadable | |
4806 | image. Reloc sections not assigned here will be handled later by | |
4807 | assign_file_positions_for_relocs. | |
252b5132 RH |
4808 | |
4809 | We also don't set the positions of the .symtab and .strtab here. */ | |
4810 | ||
b34976b6 | 4811 | static bfd_boolean |
c84fca4d AO |
4812 | assign_file_positions_except_relocs (bfd *abfd, |
4813 | struct bfd_link_info *link_info) | |
252b5132 | 4814 | { |
5c182d5f AM |
4815 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
4816 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 4817 | file_ptr off; |
9c5bfbb7 | 4818 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4819 | |
4820 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4821 | && bfd_get_format (abfd) != bfd_core) | |
4822 | { | |
5c182d5f AM |
4823 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); |
4824 | unsigned int num_sec = elf_numsections (abfd); | |
252b5132 RH |
4825 | Elf_Internal_Shdr **hdrpp; |
4826 | unsigned int i; | |
4827 | ||
4828 | /* Start after the ELF header. */ | |
4829 | off = i_ehdrp->e_ehsize; | |
4830 | ||
4831 | /* We are not creating an executable, which means that we are | |
4832 | not creating a program header, and that the actual order of | |
4833 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4834 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4835 | { |
4836 | Elf_Internal_Shdr *hdr; | |
4837 | ||
4838 | hdr = *hdrpp; | |
e0638f70 AM |
4839 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4840 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4841 | || i == tdata->symtab_section |
4842 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4843 | || i == tdata->strtab_section) |
4844 | { | |
4845 | hdr->sh_offset = -1; | |
252b5132 | 4846 | } |
9ad5cbcf | 4847 | else |
b34976b6 | 4848 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
4849 | } |
4850 | } | |
4851 | else | |
4852 | { | |
f3520d2f AM |
4853 | unsigned int alloc; |
4854 | ||
252b5132 | 4855 | /* Assign file positions for the loaded sections based on the |
08a40648 | 4856 | assignment of sections to segments. */ |
f3520d2f AM |
4857 | if (!assign_file_positions_for_load_sections (abfd, link_info)) |
4858 | return FALSE; | |
4859 | ||
4860 | /* And for non-load sections. */ | |
4861 | if (!assign_file_positions_for_non_load_sections (abfd, link_info)) | |
4862 | return FALSE; | |
4863 | ||
e36284ab AM |
4864 | if (bed->elf_backend_modify_program_headers != NULL) |
4865 | { | |
4866 | if (!(*bed->elf_backend_modify_program_headers) (abfd, link_info)) | |
4867 | return FALSE; | |
4868 | } | |
4869 | ||
f3520d2f AM |
4870 | /* Write out the program headers. */ |
4871 | alloc = tdata->program_header_size / bed->s->sizeof_phdr; | |
4872 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 | |
4873 | || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0) | |
b34976b6 | 4874 | return FALSE; |
252b5132 | 4875 | |
5c182d5f | 4876 | off = tdata->next_file_pos; |
252b5132 RH |
4877 | } |
4878 | ||
4879 | /* Place the section headers. */ | |
45d6a902 | 4880 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4881 | i_ehdrp->e_shoff = off; |
4882 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4883 | ||
5c182d5f | 4884 | tdata->next_file_pos = off; |
252b5132 | 4885 | |
b34976b6 | 4886 | return TRUE; |
252b5132 RH |
4887 | } |
4888 | ||
b34976b6 | 4889 | static bfd_boolean |
217aa764 | 4890 | prep_headers (bfd *abfd) |
252b5132 | 4891 | { |
3d540e93 | 4892 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form. */ |
2b0f7ef9 | 4893 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4894 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4895 | |
4896 | i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 4897 | |
2b0f7ef9 | 4898 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4899 | if (shstrtab == NULL) |
b34976b6 | 4900 | return FALSE; |
252b5132 RH |
4901 | |
4902 | elf_shstrtab (abfd) = shstrtab; | |
4903 | ||
4904 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4905 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4906 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4907 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4908 | ||
4909 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4910 | i_ehdrp->e_ident[EI_DATA] = | |
4911 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4912 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4913 | ||
252b5132 RH |
4914 | if ((abfd->flags & DYNAMIC) != 0) |
4915 | i_ehdrp->e_type = ET_DYN; | |
4916 | else if ((abfd->flags & EXEC_P) != 0) | |
4917 | i_ehdrp->e_type = ET_EXEC; | |
4918 | else if (bfd_get_format (abfd) == bfd_core) | |
4919 | i_ehdrp->e_type = ET_CORE; | |
4920 | else | |
4921 | i_ehdrp->e_type = ET_REL; | |
4922 | ||
4923 | switch (bfd_get_arch (abfd)) | |
4924 | { | |
4925 | case bfd_arch_unknown: | |
4926 | i_ehdrp->e_machine = EM_NONE; | |
4927 | break; | |
aa4f99bb AO |
4928 | |
4929 | /* There used to be a long list of cases here, each one setting | |
4930 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4931 | in the corresponding bfd definition. To avoid duplication, | |
4932 | the switch was removed. Machines that need special handling | |
4933 | can generally do it in elf_backend_final_write_processing(), | |
4934 | unless they need the information earlier than the final write. | |
4935 | Such need can generally be supplied by replacing the tests for | |
4936 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4937 | default: |
9c5bfbb7 AM |
4938 | i_ehdrp->e_machine = bed->elf_machine_code; |
4939 | } | |
aa4f99bb | 4940 | |
252b5132 RH |
4941 | i_ehdrp->e_version = bed->s->ev_current; |
4942 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4943 | ||
c044fabd | 4944 | /* No program header, for now. */ |
252b5132 RH |
4945 | i_ehdrp->e_phoff = 0; |
4946 | i_ehdrp->e_phentsize = 0; | |
4947 | i_ehdrp->e_phnum = 0; | |
4948 | ||
c044fabd | 4949 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4950 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4951 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4952 | ||
c044fabd | 4953 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4954 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4955 | /* It all happens later. */ |
4956 | ; | |
252b5132 RH |
4957 | else |
4958 | { | |
4959 | i_ehdrp->e_phentsize = 0; | |
252b5132 RH |
4960 | i_ehdrp->e_phoff = 0; |
4961 | } | |
4962 | ||
4963 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4964 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4965 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4966 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4967 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4968 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4969 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4970 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4971 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4972 | return FALSE; |
252b5132 | 4973 | |
b34976b6 | 4974 | return TRUE; |
252b5132 RH |
4975 | } |
4976 | ||
4977 | /* Assign file positions for all the reloc sections which are not part | |
4978 | of the loadable file image. */ | |
4979 | ||
4980 | void | |
217aa764 | 4981 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4982 | { |
4983 | file_ptr off; | |
9ad5cbcf | 4984 | unsigned int i, num_sec; |
252b5132 RH |
4985 | Elf_Internal_Shdr **shdrpp; |
4986 | ||
4987 | off = elf_tdata (abfd)->next_file_pos; | |
4988 | ||
9ad5cbcf AM |
4989 | num_sec = elf_numsections (abfd); |
4990 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4991 | { |
4992 | Elf_Internal_Shdr *shdrp; | |
4993 | ||
4994 | shdrp = *shdrpp; | |
4995 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4996 | && shdrp->sh_offset == -1) | |
b34976b6 | 4997 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4998 | } |
4999 | ||
5000 | elf_tdata (abfd)->next_file_pos = off; | |
5001 | } | |
5002 | ||
b34976b6 | 5003 | bfd_boolean |
217aa764 | 5004 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 5005 | { |
9c5bfbb7 | 5006 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 5007 | Elf_Internal_Shdr **i_shdrp; |
b34976b6 | 5008 | bfd_boolean failed; |
9ad5cbcf | 5009 | unsigned int count, num_sec; |
252b5132 RH |
5010 | |
5011 | if (! abfd->output_has_begun | |
217aa764 | 5012 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 5013 | return FALSE; |
252b5132 RH |
5014 | |
5015 | i_shdrp = elf_elfsections (abfd); | |
252b5132 | 5016 | |
b34976b6 | 5017 | failed = FALSE; |
252b5132 RH |
5018 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
5019 | if (failed) | |
b34976b6 | 5020 | return FALSE; |
252b5132 RH |
5021 | |
5022 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
5023 | ||
c044fabd | 5024 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
5025 | num_sec = elf_numsections (abfd); |
5026 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
5027 | { |
5028 | if (bed->elf_backend_section_processing) | |
5029 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
5030 | if (i_shdrp[count]->contents) | |
5031 | { | |
dc810e39 AM |
5032 | bfd_size_type amt = i_shdrp[count]->sh_size; |
5033 | ||
252b5132 | 5034 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 5035 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 5036 | return FALSE; |
252b5132 RH |
5037 | } |
5038 | } | |
5039 | ||
5040 | /* Write out the section header names. */ | |
26ae6d5e DJ |
5041 | if (elf_shstrtab (abfd) != NULL |
5042 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
08a40648 | 5043 | || !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) |
b34976b6 | 5044 | return FALSE; |
252b5132 RH |
5045 | |
5046 | if (bed->elf_backend_final_write_processing) | |
5047 | (*bed->elf_backend_final_write_processing) (abfd, | |
5048 | elf_tdata (abfd)->linker); | |
5049 | ||
ff59fc36 RM |
5050 | if (!bed->s->write_shdrs_and_ehdr (abfd)) |
5051 | return FALSE; | |
5052 | ||
5053 | /* This is last since write_shdrs_and_ehdr can touch i_shdrp[0]. */ | |
bfb53a4f RM |
5054 | if (elf_tdata (abfd)->after_write_object_contents) |
5055 | return (*elf_tdata (abfd)->after_write_object_contents) (abfd); | |
ff59fc36 RM |
5056 | |
5057 | return TRUE; | |
252b5132 RH |
5058 | } |
5059 | ||
b34976b6 | 5060 | bfd_boolean |
217aa764 | 5061 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 5062 | { |
c044fabd | 5063 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
5064 | return _bfd_elf_write_object_contents (abfd); |
5065 | } | |
c044fabd KH |
5066 | |
5067 | /* Given a section, search the header to find them. */ | |
5068 | ||
cb33740c | 5069 | unsigned int |
198beae2 | 5070 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 5071 | { |
9c5bfbb7 | 5072 | const struct elf_backend_data *bed; |
91d6fa6a | 5073 | unsigned int sec_index; |
252b5132 | 5074 | |
9ad5cbcf AM |
5075 | if (elf_section_data (asect) != NULL |
5076 | && elf_section_data (asect)->this_idx != 0) | |
5077 | return elf_section_data (asect)->this_idx; | |
5078 | ||
5079 | if (bfd_is_abs_section (asect)) | |
91d6fa6a | 5080 | sec_index = SHN_ABS; |
af746e92 | 5081 | else if (bfd_is_com_section (asect)) |
91d6fa6a | 5082 | sec_index = SHN_COMMON; |
af746e92 | 5083 | else if (bfd_is_und_section (asect)) |
91d6fa6a | 5084 | sec_index = SHN_UNDEF; |
af746e92 | 5085 | else |
91d6fa6a | 5086 | sec_index = SHN_BAD; |
252b5132 | 5087 | |
af746e92 | 5088 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
5089 | if (bed->elf_backend_section_from_bfd_section) |
5090 | { | |
91d6fa6a | 5091 | int retval = sec_index; |
9ad5cbcf | 5092 | |
af746e92 AM |
5093 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
5094 | return retval; | |
252b5132 RH |
5095 | } |
5096 | ||
91d6fa6a | 5097 | if (sec_index == SHN_BAD) |
af746e92 | 5098 | bfd_set_error (bfd_error_nonrepresentable_section); |
252b5132 | 5099 | |
91d6fa6a | 5100 | return sec_index; |
252b5132 RH |
5101 | } |
5102 | ||
5103 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
5104 | on error. */ | |
5105 | ||
5106 | int | |
217aa764 | 5107 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
5108 | { |
5109 | asymbol *asym_ptr = *asym_ptr_ptr; | |
5110 | int idx; | |
5111 | flagword flags = asym_ptr->flags; | |
5112 | ||
5113 | /* When gas creates relocations against local labels, it creates its | |
5114 | own symbol for the section, but does put the symbol into the | |
5115 | symbol chain, so udata is 0. When the linker is generating | |
5116 | relocatable output, this section symbol may be for one of the | |
5117 | input sections rather than the output section. */ | |
5118 | if (asym_ptr->udata.i == 0 | |
5119 | && (flags & BSF_SECTION_SYM) | |
5120 | && asym_ptr->section) | |
5121 | { | |
5372391b | 5122 | asection *sec; |
252b5132 RH |
5123 | int indx; |
5124 | ||
5372391b AM |
5125 | sec = asym_ptr->section; |
5126 | if (sec->owner != abfd && sec->output_section != NULL) | |
5127 | sec = sec->output_section; | |
5128 | if (sec->owner == abfd | |
5129 | && (indx = sec->index) < elf_num_section_syms (abfd) | |
4e89ac30 | 5130 | && elf_section_syms (abfd)[indx] != NULL) |
252b5132 RH |
5131 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
5132 | } | |
5133 | ||
5134 | idx = asym_ptr->udata.i; | |
5135 | ||
5136 | if (idx == 0) | |
5137 | { | |
5138 | /* This case can occur when using --strip-symbol on a symbol | |
08a40648 | 5139 | which is used in a relocation entry. */ |
252b5132 | 5140 | (*_bfd_error_handler) |
d003868e AM |
5141 | (_("%B: symbol `%s' required but not present"), |
5142 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
5143 | bfd_set_error (bfd_error_no_symbols); |
5144 | return -1; | |
5145 | } | |
5146 | ||
5147 | #if DEBUG & 4 | |
5148 | { | |
5149 | fprintf (stderr, | |
661a3fd4 | 5150 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
5151 | (long) asym_ptr, asym_ptr->name, idx, flags, |
5152 | elf_symbol_flags (flags)); | |
5153 | fflush (stderr); | |
5154 | } | |
5155 | #endif | |
5156 | ||
5157 | return idx; | |
5158 | } | |
5159 | ||
84d1d650 | 5160 | /* Rewrite program header information. */ |
252b5132 | 5161 | |
b34976b6 | 5162 | static bfd_boolean |
84d1d650 | 5163 | rewrite_elf_program_header (bfd *ibfd, bfd *obfd) |
252b5132 | 5164 | { |
b34976b6 AM |
5165 | Elf_Internal_Ehdr *iehdr; |
5166 | struct elf_segment_map *map; | |
5167 | struct elf_segment_map *map_first; | |
5168 | struct elf_segment_map **pointer_to_map; | |
5169 | Elf_Internal_Phdr *segment; | |
5170 | asection *section; | |
5171 | unsigned int i; | |
5172 | unsigned int num_segments; | |
5173 | bfd_boolean phdr_included = FALSE; | |
5c44b38e | 5174 | bfd_boolean p_paddr_valid; |
b34976b6 AM |
5175 | bfd_vma maxpagesize; |
5176 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5177 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5178 | const struct elf_backend_data *bed; |
bc67d8a6 | 5179 | |
caf47ea6 | 5180 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5181 | iehdr = elf_elfheader (ibfd); |
5182 | ||
bc67d8a6 | 5183 | map_first = NULL; |
c044fabd | 5184 | pointer_to_map = &map_first; |
252b5132 RH |
5185 | |
5186 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5187 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5188 | ||
5189 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5190 | #define SEGMENT_END(segment, start) \ |
5191 | (start + (segment->p_memsz > segment->p_filesz \ | |
5192 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5193 | |
eecdbe52 JJ |
5194 | #define SECTION_SIZE(section, segment) \ |
5195 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5196 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5197 | ? section->size : 0) |
eecdbe52 | 5198 | |
b34976b6 | 5199 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5200 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5201 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5202 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5203 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5204 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5205 | |
b34976b6 | 5206 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5207 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5208 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5209 | (section->lma >= base \ | |
eecdbe52 | 5210 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5211 | <= SEGMENT_END (segment, base))) |
252b5132 | 5212 | |
0efc80c8 L |
5213 | /* Handle PT_NOTE segment. */ |
5214 | #define IS_NOTE(p, s) \ | |
aecc8f8a | 5215 | (p->p_type == PT_NOTE \ |
0efc80c8 | 5216 | && elf_section_type (s) == SHT_NOTE \ |
aecc8f8a | 5217 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 5218 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5219 | <= p->p_offset + p->p_filesz)) |
252b5132 | 5220 | |
0efc80c8 L |
5221 | /* Special case: corefile "NOTE" section containing regs, prpsinfo |
5222 | etc. */ | |
5223 | #define IS_COREFILE_NOTE(p, s) \ | |
5224 | (IS_NOTE (p, s) \ | |
5225 | && bfd_get_format (ibfd) == bfd_core \ | |
5226 | && s->vma == 0 \ | |
5227 | && s->lma == 0) | |
5228 | ||
252b5132 RH |
5229 | /* The complicated case when p_vaddr is 0 is to handle the Solaris |
5230 | linker, which generates a PT_INTERP section with p_vaddr and | |
5231 | p_memsz set to 0. */ | |
aecc8f8a AM |
5232 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5233 | (p->p_vaddr == 0 \ | |
5234 | && p->p_paddr == 0 \ | |
5235 | && p->p_memsz == 0 \ | |
5236 | && p->p_filesz > 0 \ | |
5237 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5238 | && s->size > 0 \ |
aecc8f8a | 5239 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 5240 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5241 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5242 | |
bc67d8a6 NC |
5243 | /* Decide if the given section should be included in the given segment. |
5244 | A section will be included if: | |
f5ffc919 | 5245 | 1. It is within the address space of the segment -- we use the LMA |
08a40648 | 5246 | if that is set for the segment and the VMA otherwise, |
0efc80c8 L |
5247 | 2. It is an allocated section or a NOTE section in a PT_NOTE |
5248 | segment. | |
bc67d8a6 | 5249 | 3. There is an output section associated with it, |
eecdbe52 | 5250 | 4. The section has not already been allocated to a previous segment. |
2b05f1b7 | 5251 | 5. PT_GNU_STACK segments do not include any sections. |
03394ac9 | 5252 | 6. PT_TLS segment includes only SHF_TLS sections. |
6f79b219 JJ |
5253 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5254 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
08a40648 | 5255 | (with the possible exception of .dynamic). */ |
9f17e2a6 | 5256 | #define IS_SECTION_IN_INPUT_SEGMENT(section, segment, bed) \ |
2b05f1b7 L |
5257 | ((((segment->p_paddr \ |
5258 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5259 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
5260 | && (section->flags & SEC_ALLOC) != 0) \ | |
0efc80c8 | 5261 | || IS_NOTE (segment, section)) \ |
2b05f1b7 L |
5262 | && segment->p_type != PT_GNU_STACK \ |
5263 | && (segment->p_type != PT_TLS \ | |
5264 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5265 | && (segment->p_type == PT_LOAD \ | |
5266 | || segment->p_type == PT_TLS \ | |
5267 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
5268 | && (segment->p_type != PT_DYNAMIC \ | |
5269 | || SECTION_SIZE (section, segment) > 0 \ | |
5270 | || (segment->p_paddr \ | |
5271 | ? segment->p_paddr != section->lma \ | |
5272 | : segment->p_vaddr != section->vma) \ | |
5273 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5274 | == 0)) \ | |
0067a569 | 5275 | && !section->segment_mark) |
bc67d8a6 | 5276 | |
9f17e2a6 L |
5277 | /* If the output section of a section in the input segment is NULL, |
5278 | it is removed from the corresponding output segment. */ | |
5279 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ | |
5280 | (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed) \ | |
5281 | && section->output_section != NULL) | |
5282 | ||
b34976b6 | 5283 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5284 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5285 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5286 | ||
5287 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5288 | their VMA address ranges and their LMA address ranges overlap. | |
5289 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5290 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5291 | to the same VMA range, but with the .data section mapped to a different | |
5292 | LMA. */ | |
aecc8f8a | 5293 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea | 5294 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
08a40648 | 5295 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ |
b5f852ea | 5296 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ |
08a40648 | 5297 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) |
bc67d8a6 NC |
5298 | |
5299 | /* Initialise the segment mark field. */ | |
5300 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5301 | section->segment_mark = FALSE; |
bc67d8a6 | 5302 | |
5c44b38e AM |
5303 | /* The Solaris linker creates program headers in which all the |
5304 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5305 | file, we get confused. Check for this case, and if we find it | |
5306 | don't set the p_paddr_valid fields. */ | |
5307 | p_paddr_valid = FALSE; | |
5308 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5309 | i < num_segments; | |
5310 | i++, segment++) | |
5311 | if (segment->p_paddr != 0) | |
5312 | { | |
5313 | p_paddr_valid = TRUE; | |
5314 | break; | |
5315 | } | |
5316 | ||
252b5132 | 5317 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5318 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5319 | in the loadable segments. These can be created by weird |
aecc8f8a | 5320 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5321 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5322 | i < num_segments; | |
c044fabd | 5323 | i++, segment++) |
252b5132 | 5324 | { |
252b5132 | 5325 | unsigned int j; |
c044fabd | 5326 | Elf_Internal_Phdr *segment2; |
252b5132 | 5327 | |
aecc8f8a AM |
5328 | if (segment->p_type == PT_INTERP) |
5329 | for (section = ibfd->sections; section; section = section->next) | |
5330 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5331 | { | |
5332 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5333 | assignment code will work. */ |
aecc8f8a AM |
5334 | segment->p_vaddr = section->vma; |
5335 | break; | |
5336 | } | |
5337 | ||
bc67d8a6 | 5338 | if (segment->p_type != PT_LOAD) |
b10a8ae0 L |
5339 | { |
5340 | /* Remove PT_GNU_RELRO segment. */ | |
5341 | if (segment->p_type == PT_GNU_RELRO) | |
5342 | segment->p_type = PT_NULL; | |
5343 | continue; | |
5344 | } | |
c044fabd | 5345 | |
bc67d8a6 | 5346 | /* Determine if this segment overlaps any previous segments. */ |
0067a569 | 5347 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2++) |
bc67d8a6 NC |
5348 | { |
5349 | bfd_signed_vma extra_length; | |
c044fabd | 5350 | |
bc67d8a6 | 5351 | if (segment2->p_type != PT_LOAD |
0067a569 | 5352 | || !SEGMENT_OVERLAPS (segment, segment2)) |
bc67d8a6 | 5353 | continue; |
c044fabd | 5354 | |
bc67d8a6 NC |
5355 | /* Merge the two segments together. */ |
5356 | if (segment2->p_vaddr < segment->p_vaddr) | |
5357 | { | |
c044fabd | 5358 | /* Extend SEGMENT2 to include SEGMENT and then delete |
08a40648 | 5359 | SEGMENT. */ |
0067a569 AM |
5360 | extra_length = (SEGMENT_END (segment, segment->p_vaddr) |
5361 | - SEGMENT_END (segment2, segment2->p_vaddr)); | |
c044fabd | 5362 | |
bc67d8a6 NC |
5363 | if (extra_length > 0) |
5364 | { | |
0067a569 | 5365 | segment2->p_memsz += extra_length; |
bc67d8a6 NC |
5366 | segment2->p_filesz += extra_length; |
5367 | } | |
c044fabd | 5368 | |
bc67d8a6 | 5369 | segment->p_type = PT_NULL; |
c044fabd | 5370 | |
bc67d8a6 NC |
5371 | /* Since we have deleted P we must restart the outer loop. */ |
5372 | i = 0; | |
5373 | segment = elf_tdata (ibfd)->phdr; | |
5374 | break; | |
5375 | } | |
5376 | else | |
5377 | { | |
c044fabd | 5378 | /* Extend SEGMENT to include SEGMENT2 and then delete |
08a40648 | 5379 | SEGMENT2. */ |
0067a569 AM |
5380 | extra_length = (SEGMENT_END (segment2, segment2->p_vaddr) |
5381 | - SEGMENT_END (segment, segment->p_vaddr)); | |
c044fabd | 5382 | |
bc67d8a6 NC |
5383 | if (extra_length > 0) |
5384 | { | |
0067a569 | 5385 | segment->p_memsz += extra_length; |
bc67d8a6 NC |
5386 | segment->p_filesz += extra_length; |
5387 | } | |
c044fabd | 5388 | |
bc67d8a6 NC |
5389 | segment2->p_type = PT_NULL; |
5390 | } | |
5391 | } | |
5392 | } | |
c044fabd | 5393 | |
bc67d8a6 NC |
5394 | /* The second scan attempts to assign sections to segments. */ |
5395 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5396 | i < num_segments; | |
0067a569 | 5397 | i++, segment++) |
bc67d8a6 | 5398 | { |
0067a569 AM |
5399 | unsigned int section_count; |
5400 | asection **sections; | |
5401 | asection *output_section; | |
5402 | unsigned int isec; | |
5403 | bfd_vma matching_lma; | |
5404 | bfd_vma suggested_lma; | |
5405 | unsigned int j; | |
dc810e39 | 5406 | bfd_size_type amt; |
0067a569 AM |
5407 | asection *first_section; |
5408 | bfd_boolean first_matching_lma; | |
5409 | bfd_boolean first_suggested_lma; | |
bc67d8a6 NC |
5410 | |
5411 | if (segment->p_type == PT_NULL) | |
5412 | continue; | |
c044fabd | 5413 | |
9f17e2a6 | 5414 | first_section = NULL; |
bc67d8a6 | 5415 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5416 | for (section = ibfd->sections, section_count = 0; |
5417 | section != NULL; | |
5418 | section = section->next) | |
9f17e2a6 L |
5419 | { |
5420 | /* Find the first section in the input segment, which may be | |
5421 | removed from the corresponding output segment. */ | |
5422 | if (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed)) | |
5423 | { | |
5424 | if (first_section == NULL) | |
5425 | first_section = section; | |
5426 | if (section->output_section != NULL) | |
5427 | ++section_count; | |
5428 | } | |
5429 | } | |
811072d8 | 5430 | |
b5f852ea NC |
5431 | /* Allocate a segment map big enough to contain |
5432 | all of the sections we have selected. */ | |
dc810e39 AM |
5433 | amt = sizeof (struct elf_segment_map); |
5434 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
a50b1753 | 5435 | map = (struct elf_segment_map *) bfd_zalloc (obfd, amt); |
bc67d8a6 | 5436 | if (map == NULL) |
b34976b6 | 5437 | return FALSE; |
252b5132 RH |
5438 | |
5439 | /* Initialise the fields of the segment map. Default to | |
5440 | using the physical address of the segment in the input BFD. */ | |
0067a569 AM |
5441 | map->next = NULL; |
5442 | map->p_type = segment->p_type; | |
5443 | map->p_flags = segment->p_flags; | |
bc67d8a6 | 5444 | map->p_flags_valid = 1; |
55d55ac7 | 5445 | |
9f17e2a6 L |
5446 | /* If the first section in the input segment is removed, there is |
5447 | no need to preserve segment physical address in the corresponding | |
5448 | output segment. */ | |
945c025a | 5449 | if (!first_section || first_section->output_section != NULL) |
9f17e2a6 L |
5450 | { |
5451 | map->p_paddr = segment->p_paddr; | |
5c44b38e | 5452 | map->p_paddr_valid = p_paddr_valid; |
9f17e2a6 | 5453 | } |
252b5132 RH |
5454 | |
5455 | /* Determine if this segment contains the ELF file header | |
5456 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5457 | map->includes_filehdr = (segment->p_offset == 0 |
5458 | && segment->p_filesz >= iehdr->e_ehsize); | |
bc67d8a6 | 5459 | map->includes_phdrs = 0; |
252b5132 | 5460 | |
0067a569 | 5461 | if (!phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5462 | { |
bc67d8a6 NC |
5463 | map->includes_phdrs = |
5464 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5465 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5466 | >= ((bfd_vma) iehdr->e_phoff |
5467 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5468 | |
bc67d8a6 | 5469 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5470 | phdr_included = TRUE; |
252b5132 RH |
5471 | } |
5472 | ||
bc67d8a6 | 5473 | if (section_count == 0) |
252b5132 RH |
5474 | { |
5475 | /* Special segments, such as the PT_PHDR segment, may contain | |
5476 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5477 | something. They are allowed by the ELF spec however, so only |
5478 | a warning is produced. */ | |
bc67d8a6 | 5479 | if (segment->p_type == PT_LOAD) |
0067a569 AM |
5480 | (*_bfd_error_handler) (_("%B: warning: Empty loadable segment" |
5481 | " detected, is this intentional ?\n"), | |
5482 | ibfd); | |
252b5132 | 5483 | |
bc67d8a6 | 5484 | map->count = 0; |
c044fabd KH |
5485 | *pointer_to_map = map; |
5486 | pointer_to_map = &map->next; | |
252b5132 RH |
5487 | |
5488 | continue; | |
5489 | } | |
5490 | ||
5491 | /* Now scan the sections in the input BFD again and attempt | |
5492 | to add their corresponding output sections to the segment map. | |
5493 | The problem here is how to handle an output section which has | |
5494 | been moved (ie had its LMA changed). There are four possibilities: | |
5495 | ||
5496 | 1. None of the sections have been moved. | |
5497 | In this case we can continue to use the segment LMA from the | |
5498 | input BFD. | |
5499 | ||
5500 | 2. All of the sections have been moved by the same amount. | |
5501 | In this case we can change the segment's LMA to match the LMA | |
5502 | of the first section. | |
5503 | ||
5504 | 3. Some of the sections have been moved, others have not. | |
5505 | In this case those sections which have not been moved can be | |
5506 | placed in the current segment which will have to have its size, | |
5507 | and possibly its LMA changed, and a new segment or segments will | |
5508 | have to be created to contain the other sections. | |
5509 | ||
b5f852ea | 5510 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5511 | In this case we can change the segment's LMA to match the LMA |
5512 | of the first section and we will have to create a new segment | |
5513 | or segments to contain the other sections. | |
5514 | ||
5515 | In order to save time, we allocate an array to hold the section | |
5516 | pointers that we are interested in. As these sections get assigned | |
5517 | to a segment, they are removed from this array. */ | |
5518 | ||
a50b1753 | 5519 | sections = (asection **) bfd_malloc2 (section_count, sizeof (asection *)); |
252b5132 | 5520 | if (sections == NULL) |
b34976b6 | 5521 | return FALSE; |
252b5132 RH |
5522 | |
5523 | /* Step One: Scan for segment vs section LMA conflicts. | |
5524 | Also add the sections to the section array allocated above. | |
5525 | Also add the sections to the current segment. In the common | |
5526 | case, where the sections have not been moved, this means that | |
5527 | we have completely filled the segment, and there is nothing | |
5528 | more to do. */ | |
252b5132 | 5529 | isec = 0; |
72730e0c | 5530 | matching_lma = 0; |
252b5132 | 5531 | suggested_lma = 0; |
0067a569 AM |
5532 | first_matching_lma = TRUE; |
5533 | first_suggested_lma = TRUE; | |
252b5132 | 5534 | |
147d51c2 | 5535 | for (section = ibfd->sections; |
bc67d8a6 NC |
5536 | section != NULL; |
5537 | section = section->next) | |
147d51c2 L |
5538 | if (section == first_section) |
5539 | break; | |
5540 | ||
5541 | for (j = 0; section != NULL; section = section->next) | |
252b5132 | 5542 | { |
caf47ea6 | 5543 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5544 | { |
bc67d8a6 NC |
5545 | output_section = section->output_section; |
5546 | ||
0067a569 | 5547 | sections[j++] = section; |
252b5132 RH |
5548 | |
5549 | /* The Solaris native linker always sets p_paddr to 0. | |
5550 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5551 | correct value. Note - some backends require that |
5552 | p_paddr be left as zero. */ | |
5c44b38e | 5553 | if (!p_paddr_valid |
4455705d | 5554 | && segment->p_vaddr != 0 |
0067a569 | 5555 | && !bed->want_p_paddr_set_to_zero |
252b5132 | 5556 | && isec == 0 |
bc67d8a6 | 5557 | && output_section->lma != 0 |
0067a569 AM |
5558 | && output_section->vma == (segment->p_vaddr |
5559 | + (map->includes_filehdr | |
5560 | ? iehdr->e_ehsize | |
5561 | : 0) | |
5562 | + (map->includes_phdrs | |
5563 | ? (iehdr->e_phnum | |
5564 | * iehdr->e_phentsize) | |
5565 | : 0))) | |
bc67d8a6 | 5566 | map->p_paddr = segment->p_vaddr; |
252b5132 RH |
5567 | |
5568 | /* Match up the physical address of the segment with the | |
5569 | LMA address of the output section. */ | |
bc67d8a6 | 5570 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 | 5571 | || IS_COREFILE_NOTE (segment, section) |
0067a569 AM |
5572 | || (bed->want_p_paddr_set_to_zero |
5573 | && IS_CONTAINED_BY_VMA (output_section, segment))) | |
252b5132 | 5574 | { |
0067a569 AM |
5575 | if (first_matching_lma || output_section->lma < matching_lma) |
5576 | { | |
5577 | matching_lma = output_section->lma; | |
5578 | first_matching_lma = FALSE; | |
5579 | } | |
252b5132 RH |
5580 | |
5581 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5582 | then it does not overlap any other section within that |
252b5132 | 5583 | segment. */ |
0067a569 AM |
5584 | map->sections[isec++] = output_section; |
5585 | } | |
5586 | else if (first_suggested_lma) | |
5587 | { | |
5588 | suggested_lma = output_section->lma; | |
5589 | first_suggested_lma = FALSE; | |
252b5132 | 5590 | } |
147d51c2 L |
5591 | |
5592 | if (j == section_count) | |
5593 | break; | |
252b5132 RH |
5594 | } |
5595 | } | |
5596 | ||
bc67d8a6 | 5597 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5598 | |
5599 | /* Step Two: Adjust the physical address of the current segment, | |
5600 | if necessary. */ | |
bc67d8a6 | 5601 | if (isec == section_count) |
252b5132 RH |
5602 | { |
5603 | /* All of the sections fitted within the segment as currently | |
5604 | specified. This is the default case. Add the segment to | |
5605 | the list of built segments and carry on to process the next | |
5606 | program header in the input BFD. */ | |
bc67d8a6 | 5607 | map->count = section_count; |
c044fabd KH |
5608 | *pointer_to_map = map; |
5609 | pointer_to_map = &map->next; | |
08a40648 | 5610 | |
5c44b38e AM |
5611 | if (p_paddr_valid |
5612 | && !bed->want_p_paddr_set_to_zero | |
147d51c2 | 5613 | && matching_lma != map->p_paddr |
5c44b38e AM |
5614 | && !map->includes_filehdr |
5615 | && !map->includes_phdrs) | |
3271a814 NS |
5616 | /* There is some padding before the first section in the |
5617 | segment. So, we must account for that in the output | |
5618 | segment's vma. */ | |
5619 | map->p_vaddr_offset = matching_lma - map->p_paddr; | |
08a40648 | 5620 | |
252b5132 RH |
5621 | free (sections); |
5622 | continue; | |
5623 | } | |
252b5132 RH |
5624 | else |
5625 | { | |
0067a569 | 5626 | if (!first_matching_lma) |
72730e0c AM |
5627 | { |
5628 | /* At least one section fits inside the current segment. | |
5629 | Keep it, but modify its physical address to match the | |
5630 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5631 | map->p_paddr = matching_lma; |
72730e0c AM |
5632 | } |
5633 | else | |
5634 | { | |
5635 | /* None of the sections fitted inside the current segment. | |
5636 | Change the current segment's physical address to match | |
5637 | the LMA of the first section. */ | |
bc67d8a6 | 5638 | map->p_paddr = suggested_lma; |
72730e0c AM |
5639 | } |
5640 | ||
bc67d8a6 NC |
5641 | /* Offset the segment physical address from the lma |
5642 | to allow for space taken up by elf headers. */ | |
5643 | if (map->includes_filehdr) | |
010c8431 AM |
5644 | { |
5645 | if (map->p_paddr >= iehdr->e_ehsize) | |
5646 | map->p_paddr -= iehdr->e_ehsize; | |
5647 | else | |
5648 | { | |
5649 | map->includes_filehdr = FALSE; | |
5650 | map->includes_phdrs = FALSE; | |
5651 | } | |
5652 | } | |
252b5132 | 5653 | |
bc67d8a6 NC |
5654 | if (map->includes_phdrs) |
5655 | { | |
010c8431 AM |
5656 | if (map->p_paddr >= iehdr->e_phnum * iehdr->e_phentsize) |
5657 | { | |
5658 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5659 | ||
5660 | /* iehdr->e_phnum is just an estimate of the number | |
5661 | of program headers that we will need. Make a note | |
5662 | here of the number we used and the segment we chose | |
5663 | to hold these headers, so that we can adjust the | |
5664 | offset when we know the correct value. */ | |
5665 | phdr_adjust_num = iehdr->e_phnum; | |
5666 | phdr_adjust_seg = map; | |
5667 | } | |
5668 | else | |
5669 | map->includes_phdrs = FALSE; | |
bc67d8a6 | 5670 | } |
252b5132 RH |
5671 | } |
5672 | ||
5673 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5674 | those that fit to the current segment and removing them from the |
252b5132 RH |
5675 | sections array; but making sure not to leave large gaps. Once all |
5676 | possible sections have been assigned to the current segment it is | |
5677 | added to the list of built segments and if sections still remain | |
5678 | to be assigned, a new segment is constructed before repeating | |
5679 | the loop. */ | |
5680 | isec = 0; | |
5681 | do | |
5682 | { | |
bc67d8a6 | 5683 | map->count = 0; |
252b5132 | 5684 | suggested_lma = 0; |
0067a569 | 5685 | first_suggested_lma = TRUE; |
252b5132 RH |
5686 | |
5687 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5688 | for (j = 0; j < section_count; j++) |
252b5132 | 5689 | { |
bc67d8a6 | 5690 | section = sections[j]; |
252b5132 | 5691 | |
bc67d8a6 | 5692 | if (section == NULL) |
252b5132 RH |
5693 | continue; |
5694 | ||
bc67d8a6 | 5695 | output_section = section->output_section; |
252b5132 | 5696 | |
bc67d8a6 | 5697 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5698 | |
bc67d8a6 NC |
5699 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5700 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5701 | { |
bc67d8a6 | 5702 | if (map->count == 0) |
252b5132 RH |
5703 | { |
5704 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5705 | the beginning of the segment, then something is |
5706 | wrong. */ | |
0067a569 AM |
5707 | if (output_section->lma |
5708 | != (map->p_paddr | |
5709 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5710 | + (map->includes_phdrs | |
5711 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5712 | : 0))) | |
252b5132 RH |
5713 | abort (); |
5714 | } | |
5715 | else | |
5716 | { | |
0067a569 | 5717 | asection *prev_sec; |
252b5132 | 5718 | |
bc67d8a6 | 5719 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5720 | |
5721 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5722 | and the start of this section is more than |
5723 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5724 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5725 | maxpagesize) |
caf47ea6 | 5726 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
0067a569 | 5727 | || (prev_sec->lma + prev_sec->size |
079e9a2f | 5728 | > output_section->lma)) |
252b5132 | 5729 | { |
0067a569 AM |
5730 | if (first_suggested_lma) |
5731 | { | |
5732 | suggested_lma = output_section->lma; | |
5733 | first_suggested_lma = FALSE; | |
5734 | } | |
252b5132 RH |
5735 | |
5736 | continue; | |
5737 | } | |
5738 | } | |
5739 | ||
bc67d8a6 | 5740 | map->sections[map->count++] = output_section; |
252b5132 RH |
5741 | ++isec; |
5742 | sections[j] = NULL; | |
b34976b6 | 5743 | section->segment_mark = TRUE; |
252b5132 | 5744 | } |
0067a569 AM |
5745 | else if (first_suggested_lma) |
5746 | { | |
5747 | suggested_lma = output_section->lma; | |
5748 | first_suggested_lma = FALSE; | |
5749 | } | |
252b5132 RH |
5750 | } |
5751 | ||
bc67d8a6 | 5752 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5753 | |
5754 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5755 | *pointer_to_map = map; |
5756 | pointer_to_map = &map->next; | |
252b5132 | 5757 | |
bc67d8a6 | 5758 | if (isec < section_count) |
252b5132 RH |
5759 | { |
5760 | /* We still have not allocated all of the sections to | |
5761 | segments. Create a new segment here, initialise it | |
5762 | and carry on looping. */ | |
dc810e39 AM |
5763 | amt = sizeof (struct elf_segment_map); |
5764 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
a50b1753 | 5765 | map = (struct elf_segment_map *) bfd_alloc (obfd, amt); |
bc67d8a6 | 5766 | if (map == NULL) |
5ed6aba4 NC |
5767 | { |
5768 | free (sections); | |
5769 | return FALSE; | |
5770 | } | |
252b5132 RH |
5771 | |
5772 | /* Initialise the fields of the segment map. Set the physical | |
5773 | physical address to the LMA of the first section that has | |
5774 | not yet been assigned. */ | |
0067a569 AM |
5775 | map->next = NULL; |
5776 | map->p_type = segment->p_type; | |
5777 | map->p_flags = segment->p_flags; | |
5778 | map->p_flags_valid = 1; | |
5779 | map->p_paddr = suggested_lma; | |
5c44b38e | 5780 | map->p_paddr_valid = p_paddr_valid; |
bc67d8a6 | 5781 | map->includes_filehdr = 0; |
0067a569 | 5782 | map->includes_phdrs = 0; |
252b5132 RH |
5783 | } |
5784 | } | |
bc67d8a6 | 5785 | while (isec < section_count); |
252b5132 RH |
5786 | |
5787 | free (sections); | |
5788 | } | |
5789 | ||
bc67d8a6 NC |
5790 | elf_tdata (obfd)->segment_map = map_first; |
5791 | ||
5792 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5793 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5794 | the offset if necessary. */ |
5795 | if (phdr_adjust_seg != NULL) | |
5796 | { | |
5797 | unsigned int count; | |
c044fabd | 5798 | |
bc67d8a6 | 5799 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5800 | count++; |
252b5132 | 5801 | |
bc67d8a6 NC |
5802 | if (count > phdr_adjust_num) |
5803 | phdr_adjust_seg->p_paddr | |
5804 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5805 | } | |
c044fabd | 5806 | |
bc67d8a6 | 5807 | #undef SEGMENT_END |
eecdbe52 | 5808 | #undef SECTION_SIZE |
bc67d8a6 NC |
5809 | #undef IS_CONTAINED_BY_VMA |
5810 | #undef IS_CONTAINED_BY_LMA | |
0efc80c8 | 5811 | #undef IS_NOTE |
252b5132 | 5812 | #undef IS_COREFILE_NOTE |
bc67d8a6 | 5813 | #undef IS_SOLARIS_PT_INTERP |
9f17e2a6 | 5814 | #undef IS_SECTION_IN_INPUT_SEGMENT |
bc67d8a6 NC |
5815 | #undef INCLUDE_SECTION_IN_SEGMENT |
5816 | #undef SEGMENT_AFTER_SEGMENT | |
5817 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5818 | return TRUE; |
252b5132 RH |
5819 | } |
5820 | ||
84d1d650 L |
5821 | /* Copy ELF program header information. */ |
5822 | ||
5823 | static bfd_boolean | |
5824 | copy_elf_program_header (bfd *ibfd, bfd *obfd) | |
5825 | { | |
5826 | Elf_Internal_Ehdr *iehdr; | |
5827 | struct elf_segment_map *map; | |
5828 | struct elf_segment_map *map_first; | |
5829 | struct elf_segment_map **pointer_to_map; | |
5830 | Elf_Internal_Phdr *segment; | |
5831 | unsigned int i; | |
5832 | unsigned int num_segments; | |
5833 | bfd_boolean phdr_included = FALSE; | |
88967714 | 5834 | bfd_boolean p_paddr_valid; |
84d1d650 L |
5835 | |
5836 | iehdr = elf_elfheader (ibfd); | |
5837 | ||
5838 | map_first = NULL; | |
5839 | pointer_to_map = &map_first; | |
5840 | ||
88967714 AM |
5841 | /* If all the segment p_paddr fields are zero, don't set |
5842 | map->p_paddr_valid. */ | |
5843 | p_paddr_valid = FALSE; | |
84d1d650 | 5844 | num_segments = elf_elfheader (ibfd)->e_phnum; |
88967714 AM |
5845 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5846 | i < num_segments; | |
5847 | i++, segment++) | |
5848 | if (segment->p_paddr != 0) | |
5849 | { | |
5850 | p_paddr_valid = TRUE; | |
5851 | break; | |
5852 | } | |
5853 | ||
84d1d650 L |
5854 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5855 | i < num_segments; | |
5856 | i++, segment++) | |
5857 | { | |
5858 | asection *section; | |
5859 | unsigned int section_count; | |
5860 | bfd_size_type amt; | |
5861 | Elf_Internal_Shdr *this_hdr; | |
53020534 | 5862 | asection *first_section = NULL; |
c981028a | 5863 | asection *lowest_section = NULL; |
84d1d650 | 5864 | |
84d1d650 L |
5865 | /* Compute how many sections are in this segment. */ |
5866 | for (section = ibfd->sections, section_count = 0; | |
5867 | section != NULL; | |
5868 | section = section->next) | |
5869 | { | |
5870 | this_hdr = &(elf_section_data(section)->this_hdr); | |
9a83a553 AM |
5871 | if (this_hdr->sh_size != 0 |
5872 | && ELF_SECTION_IN_SEGMENT (this_hdr, segment)) | |
3271a814 | 5873 | { |
53020534 | 5874 | if (!first_section) |
c981028a DJ |
5875 | first_section = lowest_section = section; |
5876 | if (section->lma < lowest_section->lma) | |
5877 | lowest_section = section; | |
3271a814 NS |
5878 | section_count++; |
5879 | } | |
84d1d650 L |
5880 | } |
5881 | ||
5882 | /* Allocate a segment map big enough to contain | |
5883 | all of the sections we have selected. */ | |
5884 | amt = sizeof (struct elf_segment_map); | |
5885 | if (section_count != 0) | |
5886 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
a50b1753 | 5887 | map = (struct elf_segment_map *) bfd_zalloc (obfd, amt); |
84d1d650 L |
5888 | if (map == NULL) |
5889 | return FALSE; | |
5890 | ||
5891 | /* Initialize the fields of the output segment map with the | |
5892 | input segment. */ | |
5893 | map->next = NULL; | |
5894 | map->p_type = segment->p_type; | |
5895 | map->p_flags = segment->p_flags; | |
5896 | map->p_flags_valid = 1; | |
5897 | map->p_paddr = segment->p_paddr; | |
88967714 | 5898 | map->p_paddr_valid = p_paddr_valid; |
3f570048 AM |
5899 | map->p_align = segment->p_align; |
5900 | map->p_align_valid = 1; | |
3271a814 | 5901 | map->p_vaddr_offset = 0; |
84d1d650 | 5902 | |
9433b9b1 | 5903 | if (map->p_type == PT_GNU_RELRO) |
b10a8ae0 L |
5904 | { |
5905 | /* The PT_GNU_RELRO segment may contain the first a few | |
5906 | bytes in the .got.plt section even if the whole .got.plt | |
5907 | section isn't in the PT_GNU_RELRO segment. We won't | |
5908 | change the size of the PT_GNU_RELRO segment. */ | |
9433b9b1 | 5909 | map->p_size = segment->p_memsz; |
b10a8ae0 L |
5910 | map->p_size_valid = 1; |
5911 | } | |
5912 | ||
84d1d650 L |
5913 | /* Determine if this segment contains the ELF file header |
5914 | and if it contains the program headers themselves. */ | |
5915 | map->includes_filehdr = (segment->p_offset == 0 | |
5916 | && segment->p_filesz >= iehdr->e_ehsize); | |
5917 | ||
5918 | map->includes_phdrs = 0; | |
5919 | if (! phdr_included || segment->p_type != PT_LOAD) | |
5920 | { | |
5921 | map->includes_phdrs = | |
5922 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5923 | && (segment->p_offset + segment->p_filesz | |
5924 | >= ((bfd_vma) iehdr->e_phoff | |
5925 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
5926 | ||
5927 | if (segment->p_type == PT_LOAD && map->includes_phdrs) | |
5928 | phdr_included = TRUE; | |
5929 | } | |
5930 | ||
2b0bc088 NC |
5931 | if (map->includes_filehdr && first_section) |
5932 | /* We need to keep the space used by the headers fixed. */ | |
5933 | map->header_size = first_section->vma - segment->p_vaddr; | |
5934 | ||
88967714 AM |
5935 | if (!map->includes_phdrs |
5936 | && !map->includes_filehdr | |
5937 | && map->p_paddr_valid) | |
3271a814 | 5938 | /* There is some other padding before the first section. */ |
c981028a | 5939 | map->p_vaddr_offset = ((lowest_section ? lowest_section->lma : 0) |
53020534 | 5940 | - segment->p_paddr); |
08a40648 | 5941 | |
84d1d650 L |
5942 | if (section_count != 0) |
5943 | { | |
5944 | unsigned int isec = 0; | |
5945 | ||
53020534 | 5946 | for (section = first_section; |
84d1d650 L |
5947 | section != NULL; |
5948 | section = section->next) | |
5949 | { | |
5950 | this_hdr = &(elf_section_data(section)->this_hdr); | |
9a83a553 AM |
5951 | if (this_hdr->sh_size != 0 |
5952 | && ELF_SECTION_IN_SEGMENT (this_hdr, segment)) | |
53020534 L |
5953 | { |
5954 | map->sections[isec++] = section->output_section; | |
5955 | if (isec == section_count) | |
5956 | break; | |
5957 | } | |
84d1d650 L |
5958 | } |
5959 | } | |
5960 | ||
5961 | map->count = section_count; | |
5962 | *pointer_to_map = map; | |
5963 | pointer_to_map = &map->next; | |
5964 | } | |
5965 | ||
5966 | elf_tdata (obfd)->segment_map = map_first; | |
5967 | return TRUE; | |
5968 | } | |
5969 | ||
5970 | /* Copy private BFD data. This copies or rewrites ELF program header | |
5971 | information. */ | |
5972 | ||
5973 | static bfd_boolean | |
5974 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5975 | { | |
84d1d650 L |
5976 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5977 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5978 | return TRUE; | |
5979 | ||
5980 | if (elf_tdata (ibfd)->phdr == NULL) | |
5981 | return TRUE; | |
5982 | ||
5983 | if (ibfd->xvec == obfd->xvec) | |
5984 | { | |
cb3ff1e5 NC |
5985 | /* Check to see if any sections in the input BFD |
5986 | covered by ELF program header have changed. */ | |
d55ce4e2 | 5987 | Elf_Internal_Phdr *segment; |
84d1d650 L |
5988 | asection *section, *osec; |
5989 | unsigned int i, num_segments; | |
5990 | Elf_Internal_Shdr *this_hdr; | |
147d51c2 L |
5991 | const struct elf_backend_data *bed; |
5992 | ||
5993 | bed = get_elf_backend_data (ibfd); | |
5994 | ||
5995 | /* Regenerate the segment map if p_paddr is set to 0. */ | |
5996 | if (bed->want_p_paddr_set_to_zero) | |
5997 | goto rewrite; | |
84d1d650 L |
5998 | |
5999 | /* Initialize the segment mark field. */ | |
6000 | for (section = obfd->sections; section != NULL; | |
6001 | section = section->next) | |
6002 | section->segment_mark = FALSE; | |
6003 | ||
6004 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
6005 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
6006 | i < num_segments; | |
6007 | i++, segment++) | |
6008 | { | |
5f6999aa NC |
6009 | /* PR binutils/3535. The Solaris linker always sets the p_paddr |
6010 | and p_memsz fields of special segments (DYNAMIC, INTERP) to 0 | |
6011 | which severly confuses things, so always regenerate the segment | |
6012 | map in this case. */ | |
6013 | if (segment->p_paddr == 0 | |
6014 | && segment->p_memsz == 0 | |
6015 | && (segment->p_type == PT_INTERP || segment->p_type == PT_DYNAMIC)) | |
cb3ff1e5 | 6016 | goto rewrite; |
5f6999aa | 6017 | |
84d1d650 L |
6018 | for (section = ibfd->sections; |
6019 | section != NULL; section = section->next) | |
6020 | { | |
6021 | /* We mark the output section so that we know it comes | |
6022 | from the input BFD. */ | |
6023 | osec = section->output_section; | |
6024 | if (osec) | |
6025 | osec->segment_mark = TRUE; | |
6026 | ||
6027 | /* Check if this section is covered by the segment. */ | |
6028 | this_hdr = &(elf_section_data(section)->this_hdr); | |
9a83a553 AM |
6029 | if (this_hdr->sh_size != 0 |
6030 | && ELF_SECTION_IN_SEGMENT (this_hdr, segment)) | |
84d1d650 L |
6031 | { |
6032 | /* FIXME: Check if its output section is changed or | |
6033 | removed. What else do we need to check? */ | |
6034 | if (osec == NULL | |
6035 | || section->flags != osec->flags | |
6036 | || section->lma != osec->lma | |
6037 | || section->vma != osec->vma | |
6038 | || section->size != osec->size | |
6039 | || section->rawsize != osec->rawsize | |
6040 | || section->alignment_power != osec->alignment_power) | |
6041 | goto rewrite; | |
6042 | } | |
6043 | } | |
6044 | } | |
6045 | ||
cb3ff1e5 | 6046 | /* Check to see if any output section do not come from the |
84d1d650 L |
6047 | input BFD. */ |
6048 | for (section = obfd->sections; section != NULL; | |
6049 | section = section->next) | |
6050 | { | |
6051 | if (section->segment_mark == FALSE) | |
6052 | goto rewrite; | |
6053 | else | |
6054 | section->segment_mark = FALSE; | |
6055 | } | |
6056 | ||
6057 | return copy_elf_program_header (ibfd, obfd); | |
6058 | } | |
6059 | ||
6060 | rewrite: | |
6061 | return rewrite_elf_program_header (ibfd, obfd); | |
6062 | } | |
6063 | ||
ccd2ec6a L |
6064 | /* Initialize private output section information from input section. */ |
6065 | ||
6066 | bfd_boolean | |
6067 | _bfd_elf_init_private_section_data (bfd *ibfd, | |
6068 | asection *isec, | |
6069 | bfd *obfd, | |
6070 | asection *osec, | |
6071 | struct bfd_link_info *link_info) | |
6072 | ||
6073 | { | |
6074 | Elf_Internal_Shdr *ihdr, *ohdr; | |
dfa7b0b8 | 6075 | bfd_boolean final_link = link_info != NULL && !link_info->relocatable; |
ccd2ec6a L |
6076 | |
6077 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
6078 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
6079 | return TRUE; | |
6080 | ||
dfa7b0b8 AM |
6081 | /* For objcopy and relocatable link, don't copy the output ELF |
6082 | section type from input if the output BFD section flags have been | |
6083 | set to something different. For a final link allow some flags | |
6084 | that the linker clears to differ. */ | |
42bb2e33 | 6085 | if (elf_section_type (osec) == SHT_NULL |
dfa7b0b8 AM |
6086 | && (osec->flags == isec->flags |
6087 | || (final_link | |
6088 | && ((osec->flags ^ isec->flags) | |
6089 | & ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES)) == 0))) | |
42bb2e33 | 6090 | elf_section_type (osec) = elf_section_type (isec); |
d270463e L |
6091 | |
6092 | /* FIXME: Is this correct for all OS/PROC specific flags? */ | |
6093 | elf_section_flags (osec) |= (elf_section_flags (isec) | |
6094 | & (SHF_MASKOS | SHF_MASKPROC)); | |
ccd2ec6a L |
6095 | |
6096 | /* Set things up for objcopy and relocatable link. The output | |
6097 | SHT_GROUP section will have its elf_next_in_group pointing back | |
6098 | to the input group members. Ignore linker created group section. | |
6099 | See elfNN_ia64_object_p in elfxx-ia64.c. */ | |
dfa7b0b8 | 6100 | if (!final_link) |
ccd2ec6a L |
6101 | { |
6102 | if (elf_sec_group (isec) == NULL | |
6103 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
6104 | { | |
6105 | if (elf_section_flags (isec) & SHF_GROUP) | |
6106 | elf_section_flags (osec) |= SHF_GROUP; | |
6107 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
9659de1c | 6108 | elf_section_data (osec)->group = elf_section_data (isec)->group; |
ccd2ec6a L |
6109 | } |
6110 | } | |
6111 | ||
6112 | ihdr = &elf_section_data (isec)->this_hdr; | |
6113 | ||
6114 | /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We | |
6115 | don't use the output section of the linked-to section since it | |
6116 | may be NULL at this point. */ | |
6117 | if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0) | |
6118 | { | |
6119 | ohdr = &elf_section_data (osec)->this_hdr; | |
6120 | ohdr->sh_flags |= SHF_LINK_ORDER; | |
6121 | elf_linked_to_section (osec) = elf_linked_to_section (isec); | |
6122 | } | |
6123 | ||
6124 | osec->use_rela_p = isec->use_rela_p; | |
6125 | ||
6126 | return TRUE; | |
6127 | } | |
6128 | ||
252b5132 RH |
6129 | /* Copy private section information. This copies over the entsize |
6130 | field, and sometimes the info field. */ | |
6131 | ||
b34976b6 | 6132 | bfd_boolean |
217aa764 AM |
6133 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
6134 | asection *isec, | |
6135 | bfd *obfd, | |
6136 | asection *osec) | |
252b5132 RH |
6137 | { |
6138 | Elf_Internal_Shdr *ihdr, *ohdr; | |
6139 | ||
6140 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
6141 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 6142 | return TRUE; |
252b5132 | 6143 | |
252b5132 RH |
6144 | ihdr = &elf_section_data (isec)->this_hdr; |
6145 | ohdr = &elf_section_data (osec)->this_hdr; | |
6146 | ||
6147 | ohdr->sh_entsize = ihdr->sh_entsize; | |
6148 | ||
6149 | if (ihdr->sh_type == SHT_SYMTAB | |
6150 | || ihdr->sh_type == SHT_DYNSYM | |
6151 | || ihdr->sh_type == SHT_GNU_verneed | |
6152 | || ihdr->sh_type == SHT_GNU_verdef) | |
6153 | ohdr->sh_info = ihdr->sh_info; | |
6154 | ||
ccd2ec6a L |
6155 | return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec, |
6156 | NULL); | |
252b5132 RH |
6157 | } |
6158 | ||
d0bf826b AM |
6159 | /* Look at all the SHT_GROUP sections in IBFD, making any adjustments |
6160 | necessary if we are removing either the SHT_GROUP section or any of | |
6161 | the group member sections. DISCARDED is the value that a section's | |
6162 | output_section has if the section will be discarded, NULL when this | |
6163 | function is called from objcopy, bfd_abs_section_ptr when called | |
6164 | from the linker. */ | |
80fccad2 BW |
6165 | |
6166 | bfd_boolean | |
d0bf826b | 6167 | _bfd_elf_fixup_group_sections (bfd *ibfd, asection *discarded) |
80fccad2 | 6168 | { |
30288845 AM |
6169 | asection *isec; |
6170 | ||
30288845 | 6171 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) |
415f38a6 | 6172 | if (elf_section_type (isec) == SHT_GROUP) |
30288845 AM |
6173 | { |
6174 | asection *first = elf_next_in_group (isec); | |
6175 | asection *s = first; | |
d0bf826b AM |
6176 | bfd_size_type removed = 0; |
6177 | ||
30288845 AM |
6178 | while (s != NULL) |
6179 | { | |
415f38a6 AM |
6180 | /* If this member section is being output but the |
6181 | SHT_GROUP section is not, then clear the group info | |
6182 | set up by _bfd_elf_copy_private_section_data. */ | |
d0bf826b AM |
6183 | if (s->output_section != discarded |
6184 | && isec->output_section == discarded) | |
30288845 AM |
6185 | { |
6186 | elf_section_flags (s->output_section) &= ~SHF_GROUP; | |
6187 | elf_group_name (s->output_section) = NULL; | |
6188 | } | |
415f38a6 AM |
6189 | /* Conversely, if the member section is not being output |
6190 | but the SHT_GROUP section is, then adjust its size. */ | |
d0bf826b AM |
6191 | else if (s->output_section == discarded |
6192 | && isec->output_section != discarded) | |
6193 | removed += 4; | |
30288845 AM |
6194 | s = elf_next_in_group (s); |
6195 | if (s == first) | |
6196 | break; | |
6197 | } | |
d0bf826b AM |
6198 | if (removed != 0) |
6199 | { | |
6200 | if (discarded != NULL) | |
6201 | { | |
6202 | /* If we've been called for ld -r, then we need to | |
6203 | adjust the input section size. This function may | |
6204 | be called multiple times, so save the original | |
6205 | size. */ | |
6206 | if (isec->rawsize == 0) | |
6207 | isec->rawsize = isec->size; | |
6208 | isec->size = isec->rawsize - removed; | |
6209 | } | |
6210 | else | |
6211 | { | |
6212 | /* Adjust the output section size when called from | |
6213 | objcopy. */ | |
6214 | isec->output_section->size -= removed; | |
6215 | } | |
6216 | } | |
30288845 AM |
6217 | } |
6218 | ||
80fccad2 BW |
6219 | return TRUE; |
6220 | } | |
6221 | ||
d0bf826b AM |
6222 | /* Copy private header information. */ |
6223 | ||
6224 | bfd_boolean | |
6225 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
6226 | { | |
6227 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
6228 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
6229 | return TRUE; | |
6230 | ||
6231 | /* Copy over private BFD data if it has not already been copied. | |
6232 | This must be done here, rather than in the copy_private_bfd_data | |
6233 | entry point, because the latter is called after the section | |
6234 | contents have been set, which means that the program headers have | |
6235 | already been worked out. */ | |
6236 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
6237 | { | |
6238 | if (! copy_private_bfd_data (ibfd, obfd)) | |
6239 | return FALSE; | |
6240 | } | |
6241 | ||
6242 | return _bfd_elf_fixup_group_sections (ibfd, NULL); | |
6243 | } | |
6244 | ||
252b5132 RH |
6245 | /* Copy private symbol information. If this symbol is in a section |
6246 | which we did not map into a BFD section, try to map the section | |
6247 | index correctly. We use special macro definitions for the mapped | |
6248 | section indices; these definitions are interpreted by the | |
6249 | swap_out_syms function. */ | |
6250 | ||
9ad5cbcf AM |
6251 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
6252 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
6253 | #define MAP_STRTAB (SHN_HIOS + 3) | |
6254 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
6255 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 6256 | |
b34976b6 | 6257 | bfd_boolean |
217aa764 AM |
6258 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
6259 | asymbol *isymarg, | |
6260 | bfd *obfd, | |
6261 | asymbol *osymarg) | |
252b5132 RH |
6262 | { |
6263 | elf_symbol_type *isym, *osym; | |
6264 | ||
6265 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
6266 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 6267 | return TRUE; |
252b5132 RH |
6268 | |
6269 | isym = elf_symbol_from (ibfd, isymarg); | |
6270 | osym = elf_symbol_from (obfd, osymarg); | |
6271 | ||
6272 | if (isym != NULL | |
8424d8f5 | 6273 | && isym->internal_elf_sym.st_shndx != 0 |
252b5132 RH |
6274 | && osym != NULL |
6275 | && bfd_is_abs_section (isym->symbol.section)) | |
6276 | { | |
6277 | unsigned int shndx; | |
6278 | ||
6279 | shndx = isym->internal_elf_sym.st_shndx; | |
6280 | if (shndx == elf_onesymtab (ibfd)) | |
6281 | shndx = MAP_ONESYMTAB; | |
6282 | else if (shndx == elf_dynsymtab (ibfd)) | |
6283 | shndx = MAP_DYNSYMTAB; | |
6284 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
6285 | shndx = MAP_STRTAB; | |
6286 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
6287 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
6288 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
6289 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
6290 | osym->internal_elf_sym.st_shndx = shndx; |
6291 | } | |
6292 | ||
b34976b6 | 6293 | return TRUE; |
252b5132 RH |
6294 | } |
6295 | ||
6296 | /* Swap out the symbols. */ | |
6297 | ||
b34976b6 | 6298 | static bfd_boolean |
217aa764 AM |
6299 | swap_out_syms (bfd *abfd, |
6300 | struct bfd_strtab_hash **sttp, | |
6301 | int relocatable_p) | |
252b5132 | 6302 | { |
9c5bfbb7 | 6303 | const struct elf_backend_data *bed; |
079e9a2f AM |
6304 | int symcount; |
6305 | asymbol **syms; | |
6306 | struct bfd_strtab_hash *stt; | |
6307 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 6308 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 6309 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
6310 | bfd_byte *outbound_syms; |
6311 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
6312 | int idx; |
6313 | bfd_size_type amt; | |
174fd7f9 | 6314 | bfd_boolean name_local_sections; |
252b5132 RH |
6315 | |
6316 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 6317 | return FALSE; |
252b5132 | 6318 | |
c044fabd | 6319 | /* Dump out the symtabs. */ |
079e9a2f AM |
6320 | stt = _bfd_elf_stringtab_init (); |
6321 | if (stt == NULL) | |
b34976b6 | 6322 | return FALSE; |
252b5132 | 6323 | |
079e9a2f AM |
6324 | bed = get_elf_backend_data (abfd); |
6325 | symcount = bfd_get_symcount (abfd); | |
6326 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6327 | symtab_hdr->sh_type = SHT_SYMTAB; | |
6328 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
6329 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
6330 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
72de5009 | 6331 | symtab_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align; |
079e9a2f AM |
6332 | |
6333 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
6334 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
6335 | ||
a50b1753 NC |
6336 | outbound_syms = (bfd_byte *) bfd_alloc2 (abfd, 1 + symcount, |
6337 | bed->s->sizeof_sym); | |
079e9a2f | 6338 | if (outbound_syms == NULL) |
5ed6aba4 NC |
6339 | { |
6340 | _bfd_stringtab_free (stt); | |
6341 | return FALSE; | |
6342 | } | |
217aa764 | 6343 | symtab_hdr->contents = outbound_syms; |
252b5132 | 6344 | |
9ad5cbcf AM |
6345 | outbound_shndx = NULL; |
6346 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
6347 | if (symtab_shndx_hdr->sh_name != 0) | |
6348 | { | |
6349 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
a50b1753 NC |
6350 | outbound_shndx = (bfd_byte *) |
6351 | bfd_zalloc2 (abfd, 1 + symcount, sizeof (Elf_External_Sym_Shndx)); | |
9ad5cbcf | 6352 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
6353 | { |
6354 | _bfd_stringtab_free (stt); | |
6355 | return FALSE; | |
6356 | } | |
6357 | ||
9ad5cbcf AM |
6358 | symtab_shndx_hdr->contents = outbound_shndx; |
6359 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
6360 | symtab_shndx_hdr->sh_size = amt; | |
6361 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
6362 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
6363 | } | |
6364 | ||
589e6347 | 6365 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
6366 | { |
6367 | /* Fill in zeroth symbol and swap it out. */ | |
6368 | Elf_Internal_Sym sym; | |
6369 | sym.st_name = 0; | |
6370 | sym.st_value = 0; | |
6371 | sym.st_size = 0; | |
6372 | sym.st_info = 0; | |
6373 | sym.st_other = 0; | |
6374 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 6375 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6376 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6377 | if (outbound_shndx != NULL) |
6378 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6379 | } |
252b5132 | 6380 | |
174fd7f9 RS |
6381 | name_local_sections |
6382 | = (bed->elf_backend_name_local_section_symbols | |
6383 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
6384 | ||
079e9a2f AM |
6385 | syms = bfd_get_outsymbols (abfd); |
6386 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 6387 | { |
252b5132 | 6388 | Elf_Internal_Sym sym; |
079e9a2f AM |
6389 | bfd_vma value = syms[idx]->value; |
6390 | elf_symbol_type *type_ptr; | |
6391 | flagword flags = syms[idx]->flags; | |
6392 | int type; | |
252b5132 | 6393 | |
174fd7f9 RS |
6394 | if (!name_local_sections |
6395 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
6396 | { |
6397 | /* Local section symbols have no name. */ | |
6398 | sym.st_name = 0; | |
6399 | } | |
6400 | else | |
6401 | { | |
6402 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
6403 | syms[idx]->name, | |
b34976b6 | 6404 | TRUE, FALSE); |
079e9a2f | 6405 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
6406 | { |
6407 | _bfd_stringtab_free (stt); | |
6408 | return FALSE; | |
6409 | } | |
079e9a2f | 6410 | } |
252b5132 | 6411 | |
079e9a2f | 6412 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 6413 | |
079e9a2f AM |
6414 | if ((flags & BSF_SECTION_SYM) == 0 |
6415 | && bfd_is_com_section (syms[idx]->section)) | |
6416 | { | |
6417 | /* ELF common symbols put the alignment into the `value' field, | |
6418 | and the size into the `size' field. This is backwards from | |
6419 | how BFD handles it, so reverse it here. */ | |
6420 | sym.st_size = value; | |
6421 | if (type_ptr == NULL | |
6422 | || type_ptr->internal_elf_sym.st_value == 0) | |
6423 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
6424 | else | |
6425 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
6426 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
6427 | (abfd, syms[idx]->section); | |
6428 | } | |
6429 | else | |
6430 | { | |
6431 | asection *sec = syms[idx]->section; | |
cb33740c | 6432 | unsigned int shndx; |
252b5132 | 6433 | |
079e9a2f AM |
6434 | if (sec->output_section) |
6435 | { | |
6436 | value += sec->output_offset; | |
6437 | sec = sec->output_section; | |
6438 | } | |
589e6347 | 6439 | |
079e9a2f AM |
6440 | /* Don't add in the section vma for relocatable output. */ |
6441 | if (! relocatable_p) | |
6442 | value += sec->vma; | |
6443 | sym.st_value = value; | |
6444 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
6445 | ||
6446 | if (bfd_is_abs_section (sec) | |
6447 | && type_ptr != NULL | |
6448 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
6449 | { | |
6450 | /* This symbol is in a real ELF section which we did | |
6451 | not create as a BFD section. Undo the mapping done | |
6452 | by copy_private_symbol_data. */ | |
6453 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
6454 | switch (shndx) | |
6455 | { | |
6456 | case MAP_ONESYMTAB: | |
6457 | shndx = elf_onesymtab (abfd); | |
6458 | break; | |
6459 | case MAP_DYNSYMTAB: | |
6460 | shndx = elf_dynsymtab (abfd); | |
6461 | break; | |
6462 | case MAP_STRTAB: | |
6463 | shndx = elf_tdata (abfd)->strtab_section; | |
6464 | break; | |
6465 | case MAP_SHSTRTAB: | |
6466 | shndx = elf_tdata (abfd)->shstrtab_section; | |
6467 | break; | |
9ad5cbcf AM |
6468 | case MAP_SYM_SHNDX: |
6469 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
6470 | break; | |
079e9a2f AM |
6471 | default: |
6472 | break; | |
6473 | } | |
6474 | } | |
6475 | else | |
6476 | { | |
6477 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 6478 | |
cb33740c | 6479 | if (shndx == SHN_BAD) |
079e9a2f AM |
6480 | { |
6481 | asection *sec2; | |
6482 | ||
6483 | /* Writing this would be a hell of a lot easier if | |
6484 | we had some decent documentation on bfd, and | |
6485 | knew what to expect of the library, and what to | |
6486 | demand of applications. For example, it | |
6487 | appears that `objcopy' might not set the | |
6488 | section of a symbol to be a section that is | |
6489 | actually in the output file. */ | |
6490 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
6491 | if (sec2 == NULL) |
6492 | { | |
6493 | _bfd_error_handler (_("\ | |
6494 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
6495 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
6496 | sec->name); | |
811072d8 | 6497 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 6498 | _bfd_stringtab_free (stt); |
589e6347 NC |
6499 | return FALSE; |
6500 | } | |
811072d8 | 6501 | |
079e9a2f | 6502 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
cb33740c | 6503 | BFD_ASSERT (shndx != SHN_BAD); |
079e9a2f AM |
6504 | } |
6505 | } | |
252b5132 | 6506 | |
079e9a2f AM |
6507 | sym.st_shndx = shndx; |
6508 | } | |
252b5132 | 6509 | |
13ae64f3 JJ |
6510 | if ((flags & BSF_THREAD_LOCAL) != 0) |
6511 | type = STT_TLS; | |
d8045f23 NC |
6512 | else if ((flags & BSF_GNU_INDIRECT_FUNCTION) != 0) |
6513 | type = STT_GNU_IFUNC; | |
13ae64f3 | 6514 | else if ((flags & BSF_FUNCTION) != 0) |
079e9a2f AM |
6515 | type = STT_FUNC; |
6516 | else if ((flags & BSF_OBJECT) != 0) | |
6517 | type = STT_OBJECT; | |
d9352518 DB |
6518 | else if ((flags & BSF_RELC) != 0) |
6519 | type = STT_RELC; | |
6520 | else if ((flags & BSF_SRELC) != 0) | |
6521 | type = STT_SRELC; | |
079e9a2f AM |
6522 | else |
6523 | type = STT_NOTYPE; | |
252b5132 | 6524 | |
13ae64f3 JJ |
6525 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
6526 | type = STT_TLS; | |
6527 | ||
589e6347 | 6528 | /* Processor-specific types. */ |
079e9a2f AM |
6529 | if (type_ptr != NULL |
6530 | && bed->elf_backend_get_symbol_type) | |
6531 | type = ((*bed->elf_backend_get_symbol_type) | |
6532 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 6533 | |
079e9a2f AM |
6534 | if (flags & BSF_SECTION_SYM) |
6535 | { | |
6536 | if (flags & BSF_GLOBAL) | |
6537 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6538 | else | |
6539 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
6540 | } | |
6541 | else if (bfd_is_com_section (syms[idx]->section)) | |
0a40daed | 6542 | { |
504b7d20 | 6543 | #ifdef USE_STT_COMMON |
0a40daed MK |
6544 | if (type == STT_OBJECT) |
6545 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_COMMON); | |
6546 | else | |
504b7d20 | 6547 | #endif |
c91e322a | 6548 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); |
0a40daed | 6549 | } |
079e9a2f AM |
6550 | else if (bfd_is_und_section (syms[idx]->section)) |
6551 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
6552 | ? STB_WEAK | |
6553 | : STB_GLOBAL), | |
6554 | type); | |
6555 | else if (flags & BSF_FILE) | |
6556 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
6557 | else | |
6558 | { | |
6559 | int bind = STB_LOCAL; | |
252b5132 | 6560 | |
079e9a2f AM |
6561 | if (flags & BSF_LOCAL) |
6562 | bind = STB_LOCAL; | |
3e7a7d11 NC |
6563 | else if (flags & BSF_GNU_UNIQUE) |
6564 | bind = STB_GNU_UNIQUE; | |
079e9a2f AM |
6565 | else if (flags & BSF_WEAK) |
6566 | bind = STB_WEAK; | |
6567 | else if (flags & BSF_GLOBAL) | |
6568 | bind = STB_GLOBAL; | |
252b5132 | 6569 | |
079e9a2f AM |
6570 | sym.st_info = ELF_ST_INFO (bind, type); |
6571 | } | |
252b5132 | 6572 | |
079e9a2f AM |
6573 | if (type_ptr != NULL) |
6574 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6575 | else | |
6576 | sym.st_other = 0; | |
252b5132 | 6577 | |
9ad5cbcf | 6578 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6579 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6580 | if (outbound_shndx != NULL) |
6581 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6582 | } |
252b5132 | 6583 | |
079e9a2f AM |
6584 | *sttp = stt; |
6585 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6586 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6587 | |
079e9a2f AM |
6588 | symstrtab_hdr->sh_flags = 0; |
6589 | symstrtab_hdr->sh_addr = 0; | |
6590 | symstrtab_hdr->sh_entsize = 0; | |
6591 | symstrtab_hdr->sh_link = 0; | |
6592 | symstrtab_hdr->sh_info = 0; | |
6593 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6594 | |
b34976b6 | 6595 | return TRUE; |
252b5132 RH |
6596 | } |
6597 | ||
6598 | /* Return the number of bytes required to hold the symtab vector. | |
6599 | ||
6600 | Note that we base it on the count plus 1, since we will null terminate | |
6601 | the vector allocated based on this size. However, the ELF symbol table | |
6602 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6603 | ||
6604 | long | |
217aa764 | 6605 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6606 | { |
6607 | long symcount; | |
6608 | long symtab_size; | |
6609 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6610 | ||
6611 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6612 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6613 | if (symcount > 0) | |
6614 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6615 | |
6616 | return symtab_size; | |
6617 | } | |
6618 | ||
6619 | long | |
217aa764 | 6620 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6621 | { |
6622 | long symcount; | |
6623 | long symtab_size; | |
6624 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6625 | ||
6626 | if (elf_dynsymtab (abfd) == 0) | |
6627 | { | |
6628 | bfd_set_error (bfd_error_invalid_operation); | |
6629 | return -1; | |
6630 | } | |
6631 | ||
6632 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6633 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6634 | if (symcount > 0) | |
6635 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6636 | |
6637 | return symtab_size; | |
6638 | } | |
6639 | ||
6640 | long | |
217aa764 AM |
6641 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6642 | sec_ptr asect) | |
252b5132 RH |
6643 | { |
6644 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6645 | } | |
6646 | ||
6647 | /* Canonicalize the relocs. */ | |
6648 | ||
6649 | long | |
217aa764 AM |
6650 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6651 | sec_ptr section, | |
6652 | arelent **relptr, | |
6653 | asymbol **symbols) | |
252b5132 RH |
6654 | { |
6655 | arelent *tblptr; | |
6656 | unsigned int i; | |
9c5bfbb7 | 6657 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6658 | |
b34976b6 | 6659 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6660 | return -1; |
6661 | ||
6662 | tblptr = section->relocation; | |
6663 | for (i = 0; i < section->reloc_count; i++) | |
6664 | *relptr++ = tblptr++; | |
6665 | ||
6666 | *relptr = NULL; | |
6667 | ||
6668 | return section->reloc_count; | |
6669 | } | |
6670 | ||
6671 | long | |
6cee3f79 | 6672 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6673 | { |
9c5bfbb7 | 6674 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6675 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6676 | |
6677 | if (symcount >= 0) | |
6678 | bfd_get_symcount (abfd) = symcount; | |
6679 | return symcount; | |
6680 | } | |
6681 | ||
6682 | long | |
217aa764 AM |
6683 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6684 | asymbol **allocation) | |
252b5132 | 6685 | { |
9c5bfbb7 | 6686 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6687 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6688 | |
6689 | if (symcount >= 0) | |
6690 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6691 | return symcount; | |
252b5132 RH |
6692 | } |
6693 | ||
8615f3f2 AM |
6694 | /* Return the size required for the dynamic reloc entries. Any loadable |
6695 | section that was actually installed in the BFD, and has type SHT_REL | |
6696 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6697 | dynamic reloc section. */ | |
252b5132 RH |
6698 | |
6699 | long | |
217aa764 | 6700 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6701 | { |
6702 | long ret; | |
6703 | asection *s; | |
6704 | ||
6705 | if (elf_dynsymtab (abfd) == 0) | |
6706 | { | |
6707 | bfd_set_error (bfd_error_invalid_operation); | |
6708 | return -1; | |
6709 | } | |
6710 | ||
6711 | ret = sizeof (arelent *); | |
6712 | for (s = abfd->sections; s != NULL; s = s->next) | |
266b05cf | 6713 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
252b5132 RH |
6714 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6715 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6716 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6717 | * sizeof (arelent *)); |
6718 | ||
6719 | return ret; | |
6720 | } | |
6721 | ||
8615f3f2 AM |
6722 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6723 | dynamic relocations as a single block, although they are actually | |
6724 | associated with particular sections; the interface, which was | |
6725 | designed for SunOS style shared libraries, expects that there is only | |
6726 | one set of dynamic relocs. Any loadable section that was actually | |
6727 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6728 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6729 | |
6730 | long | |
217aa764 AM |
6731 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6732 | arelent **storage, | |
6733 | asymbol **syms) | |
252b5132 | 6734 | { |
217aa764 | 6735 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6736 | asection *s; |
6737 | long ret; | |
6738 | ||
6739 | if (elf_dynsymtab (abfd) == 0) | |
6740 | { | |
6741 | bfd_set_error (bfd_error_invalid_operation); | |
6742 | return -1; | |
6743 | } | |
6744 | ||
6745 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6746 | ret = 0; | |
6747 | for (s = abfd->sections; s != NULL; s = s->next) | |
6748 | { | |
266b05cf | 6749 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
252b5132 RH |
6750 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6751 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6752 | { | |
6753 | arelent *p; | |
6754 | long count, i; | |
6755 | ||
b34976b6 | 6756 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6757 | return -1; |
eea6121a | 6758 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6759 | p = s->relocation; |
6760 | for (i = 0; i < count; i++) | |
6761 | *storage++ = p++; | |
6762 | ret += count; | |
6763 | } | |
6764 | } | |
6765 | ||
6766 | *storage = NULL; | |
6767 | ||
6768 | return ret; | |
6769 | } | |
6770 | \f | |
6771 | /* Read in the version information. */ | |
6772 | ||
b34976b6 | 6773 | bfd_boolean |
fc0e6df6 | 6774 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6775 | { |
6776 | bfd_byte *contents = NULL; | |
fc0e6df6 PB |
6777 | unsigned int freeidx = 0; |
6778 | ||
6779 | if (elf_dynverref (abfd) != 0) | |
6780 | { | |
6781 | Elf_Internal_Shdr *hdr; | |
6782 | Elf_External_Verneed *everneed; | |
6783 | Elf_Internal_Verneed *iverneed; | |
6784 | unsigned int i; | |
d0fb9a8d | 6785 | bfd_byte *contents_end; |
fc0e6df6 PB |
6786 | |
6787 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6788 | ||
a50b1753 NC |
6789 | elf_tdata (abfd)->verref = (Elf_Internal_Verneed *) |
6790 | bfd_zalloc2 (abfd, hdr->sh_info, sizeof (Elf_Internal_Verneed)); | |
fc0e6df6 PB |
6791 | if (elf_tdata (abfd)->verref == NULL) |
6792 | goto error_return; | |
6793 | ||
6794 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6795 | ||
a50b1753 | 6796 | contents = (bfd_byte *) bfd_malloc (hdr->sh_size); |
fc0e6df6 | 6797 | if (contents == NULL) |
d0fb9a8d JJ |
6798 | { |
6799 | error_return_verref: | |
6800 | elf_tdata (abfd)->verref = NULL; | |
6801 | elf_tdata (abfd)->cverrefs = 0; | |
6802 | goto error_return; | |
6803 | } | |
fc0e6df6 PB |
6804 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
6805 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
d0fb9a8d | 6806 | goto error_return_verref; |
fc0e6df6 | 6807 | |
d0fb9a8d JJ |
6808 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed)) |
6809 | goto error_return_verref; | |
6810 | ||
6811 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
6812 | == sizeof (Elf_External_Vernaux)); | |
6813 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
6814 | everneed = (Elf_External_Verneed *) contents; |
6815 | iverneed = elf_tdata (abfd)->verref; | |
6816 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6817 | { | |
6818 | Elf_External_Vernaux *evernaux; | |
6819 | Elf_Internal_Vernaux *ivernaux; | |
6820 | unsigned int j; | |
6821 | ||
6822 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6823 | ||
6824 | iverneed->vn_bfd = abfd; | |
6825 | ||
6826 | iverneed->vn_filename = | |
6827 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6828 | iverneed->vn_file); | |
6829 | if (iverneed->vn_filename == NULL) | |
d0fb9a8d | 6830 | goto error_return_verref; |
fc0e6df6 | 6831 | |
d0fb9a8d JJ |
6832 | if (iverneed->vn_cnt == 0) |
6833 | iverneed->vn_auxptr = NULL; | |
6834 | else | |
6835 | { | |
a50b1753 NC |
6836 | iverneed->vn_auxptr = (struct elf_internal_vernaux *) |
6837 | bfd_alloc2 (abfd, iverneed->vn_cnt, | |
6838 | sizeof (Elf_Internal_Vernaux)); | |
d0fb9a8d JJ |
6839 | if (iverneed->vn_auxptr == NULL) |
6840 | goto error_return_verref; | |
6841 | } | |
6842 | ||
6843 | if (iverneed->vn_aux | |
6844 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6845 | goto error_return_verref; | |
fc0e6df6 PB |
6846 | |
6847 | evernaux = ((Elf_External_Vernaux *) | |
6848 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6849 | ivernaux = iverneed->vn_auxptr; | |
6850 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6851 | { | |
6852 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6853 | ||
6854 | ivernaux->vna_nodename = | |
6855 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6856 | ivernaux->vna_name); | |
6857 | if (ivernaux->vna_nodename == NULL) | |
d0fb9a8d | 6858 | goto error_return_verref; |
fc0e6df6 PB |
6859 | |
6860 | if (j + 1 < iverneed->vn_cnt) | |
6861 | ivernaux->vna_nextptr = ivernaux + 1; | |
6862 | else | |
6863 | ivernaux->vna_nextptr = NULL; | |
6864 | ||
d0fb9a8d JJ |
6865 | if (ivernaux->vna_next |
6866 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
6867 | goto error_return_verref; | |
6868 | ||
fc0e6df6 PB |
6869 | evernaux = ((Elf_External_Vernaux *) |
6870 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6871 | ||
6872 | if (ivernaux->vna_other > freeidx) | |
6873 | freeidx = ivernaux->vna_other; | |
6874 | } | |
6875 | ||
6876 | if (i + 1 < hdr->sh_info) | |
6877 | iverneed->vn_nextref = iverneed + 1; | |
6878 | else | |
6879 | iverneed->vn_nextref = NULL; | |
6880 | ||
d0fb9a8d JJ |
6881 | if (iverneed->vn_next |
6882 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6883 | goto error_return_verref; | |
6884 | ||
fc0e6df6 PB |
6885 | everneed = ((Elf_External_Verneed *) |
6886 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6887 | } | |
6888 | ||
6889 | free (contents); | |
6890 | contents = NULL; | |
6891 | } | |
252b5132 RH |
6892 | |
6893 | if (elf_dynverdef (abfd) != 0) | |
6894 | { | |
6895 | Elf_Internal_Shdr *hdr; | |
6896 | Elf_External_Verdef *everdef; | |
6897 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6898 | Elf_Internal_Verdef *iverdefarr; |
6899 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6900 | unsigned int i; |
062e2358 | 6901 | unsigned int maxidx; |
d0fb9a8d | 6902 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
6903 | |
6904 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6905 | ||
a50b1753 | 6906 | contents = (bfd_byte *) bfd_malloc (hdr->sh_size); |
252b5132 RH |
6907 | if (contents == NULL) |
6908 | goto error_return; | |
6909 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6910 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6911 | goto error_return; |
6912 | ||
d0fb9a8d JJ |
6913 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef)) |
6914 | goto error_return; | |
6915 | ||
6916 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
6917 | >= sizeof (Elf_External_Verdaux)); | |
6918 | contents_end_def = contents + hdr->sh_size | |
6919 | - sizeof (Elf_External_Verdef); | |
6920 | contents_end_aux = contents + hdr->sh_size | |
6921 | - sizeof (Elf_External_Verdaux); | |
6922 | ||
f631889e UD |
6923 | /* We know the number of entries in the section but not the maximum |
6924 | index. Therefore we have to run through all entries and find | |
6925 | the maximum. */ | |
252b5132 | 6926 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6927 | maxidx = 0; |
6928 | for (i = 0; i < hdr->sh_info; ++i) | |
6929 | { | |
6930 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6931 | ||
062e2358 AM |
6932 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6933 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 6934 | |
d0fb9a8d JJ |
6935 | if (iverdefmem.vd_next |
6936 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
6937 | goto error_return; | |
6938 | ||
f631889e UD |
6939 | everdef = ((Elf_External_Verdef *) |
6940 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6941 | } | |
6942 | ||
fc0e6df6 PB |
6943 | if (default_imported_symver) |
6944 | { | |
6945 | if (freeidx > maxidx) | |
6946 | maxidx = ++freeidx; | |
6947 | else | |
6948 | freeidx = ++maxidx; | |
6949 | } | |
a50b1753 NC |
6950 | elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) |
6951 | bfd_zalloc2 (abfd, maxidx, sizeof (Elf_Internal_Verdef)); | |
f631889e UD |
6952 | if (elf_tdata (abfd)->verdef == NULL) |
6953 | goto error_return; | |
6954 | ||
6955 | elf_tdata (abfd)->cverdefs = maxidx; | |
6956 | ||
6957 | everdef = (Elf_External_Verdef *) contents; | |
6958 | iverdefarr = elf_tdata (abfd)->verdef; | |
6959 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6960 | { |
6961 | Elf_External_Verdaux *everdaux; | |
6962 | Elf_Internal_Verdaux *iverdaux; | |
6963 | unsigned int j; | |
6964 | ||
f631889e UD |
6965 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6966 | ||
d0fb9a8d JJ |
6967 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
6968 | { | |
6969 | error_return_verdef: | |
6970 | elf_tdata (abfd)->verdef = NULL; | |
6971 | elf_tdata (abfd)->cverdefs = 0; | |
6972 | goto error_return; | |
6973 | } | |
6974 | ||
f631889e UD |
6975 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
6976 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6977 | |
6978 | iverdef->vd_bfd = abfd; | |
6979 | ||
d0fb9a8d JJ |
6980 | if (iverdef->vd_cnt == 0) |
6981 | iverdef->vd_auxptr = NULL; | |
6982 | else | |
6983 | { | |
a50b1753 NC |
6984 | iverdef->vd_auxptr = (struct elf_internal_verdaux *) |
6985 | bfd_alloc2 (abfd, iverdef->vd_cnt, | |
6986 | sizeof (Elf_Internal_Verdaux)); | |
d0fb9a8d JJ |
6987 | if (iverdef->vd_auxptr == NULL) |
6988 | goto error_return_verdef; | |
6989 | } | |
6990 | ||
6991 | if (iverdef->vd_aux | |
6992 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
6993 | goto error_return_verdef; | |
252b5132 RH |
6994 | |
6995 | everdaux = ((Elf_External_Verdaux *) | |
6996 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6997 | iverdaux = iverdef->vd_auxptr; | |
6998 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6999 | { | |
7000 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
7001 | ||
7002 | iverdaux->vda_nodename = | |
7003 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
7004 | iverdaux->vda_name); | |
7005 | if (iverdaux->vda_nodename == NULL) | |
d0fb9a8d | 7006 | goto error_return_verdef; |
252b5132 RH |
7007 | |
7008 | if (j + 1 < iverdef->vd_cnt) | |
7009 | iverdaux->vda_nextptr = iverdaux + 1; | |
7010 | else | |
7011 | iverdaux->vda_nextptr = NULL; | |
7012 | ||
d0fb9a8d JJ |
7013 | if (iverdaux->vda_next |
7014 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
7015 | goto error_return_verdef; | |
7016 | ||
252b5132 RH |
7017 | everdaux = ((Elf_External_Verdaux *) |
7018 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
7019 | } | |
7020 | ||
d0fb9a8d JJ |
7021 | if (iverdef->vd_cnt) |
7022 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 7023 | |
d0fb9a8d | 7024 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 RH |
7025 | iverdef->vd_nextdef = iverdef + 1; |
7026 | else | |
7027 | iverdef->vd_nextdef = NULL; | |
7028 | ||
7029 | everdef = ((Elf_External_Verdef *) | |
7030 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
7031 | } | |
7032 | ||
7033 | free (contents); | |
7034 | contents = NULL; | |
7035 | } | |
fc0e6df6 | 7036 | else if (default_imported_symver) |
252b5132 | 7037 | { |
fc0e6df6 PB |
7038 | if (freeidx < 3) |
7039 | freeidx = 3; | |
7040 | else | |
7041 | freeidx++; | |
252b5132 | 7042 | |
a50b1753 NC |
7043 | elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) |
7044 | bfd_zalloc2 (abfd, freeidx, sizeof (Elf_Internal_Verdef)); | |
fc0e6df6 | 7045 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
7046 | goto error_return; |
7047 | ||
fc0e6df6 PB |
7048 | elf_tdata (abfd)->cverdefs = freeidx; |
7049 | } | |
252b5132 | 7050 | |
fc0e6df6 PB |
7051 | /* Create a default version based on the soname. */ |
7052 | if (default_imported_symver) | |
7053 | { | |
7054 | Elf_Internal_Verdef *iverdef; | |
7055 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 7056 | |
fc0e6df6 | 7057 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 7058 | |
fc0e6df6 PB |
7059 | iverdef->vd_version = VER_DEF_CURRENT; |
7060 | iverdef->vd_flags = 0; | |
7061 | iverdef->vd_ndx = freeidx; | |
7062 | iverdef->vd_cnt = 1; | |
252b5132 | 7063 | |
fc0e6df6 | 7064 | iverdef->vd_bfd = abfd; |
252b5132 | 7065 | |
fc0e6df6 PB |
7066 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
7067 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 7068 | goto error_return_verdef; |
fc0e6df6 | 7069 | iverdef->vd_nextdef = NULL; |
a50b1753 NC |
7070 | iverdef->vd_auxptr = (struct elf_internal_verdaux *) |
7071 | bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux)); | |
d0fb9a8d JJ |
7072 | if (iverdef->vd_auxptr == NULL) |
7073 | goto error_return_verdef; | |
252b5132 | 7074 | |
fc0e6df6 PB |
7075 | iverdaux = iverdef->vd_auxptr; |
7076 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
7077 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
7078 | } |
7079 | ||
b34976b6 | 7080 | return TRUE; |
252b5132 RH |
7081 | |
7082 | error_return: | |
5ed6aba4 | 7083 | if (contents != NULL) |
252b5132 | 7084 | free (contents); |
b34976b6 | 7085 | return FALSE; |
252b5132 RH |
7086 | } |
7087 | \f | |
7088 | asymbol * | |
217aa764 | 7089 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
7090 | { |
7091 | elf_symbol_type *newsym; | |
dc810e39 | 7092 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 7093 | |
a50b1753 | 7094 | newsym = (elf_symbol_type *) bfd_zalloc (abfd, amt); |
252b5132 RH |
7095 | if (!newsym) |
7096 | return NULL; | |
7097 | else | |
7098 | { | |
7099 | newsym->symbol.the_bfd = abfd; | |
7100 | return &newsym->symbol; | |
7101 | } | |
7102 | } | |
7103 | ||
7104 | void | |
217aa764 AM |
7105 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
7106 | asymbol *symbol, | |
7107 | symbol_info *ret) | |
252b5132 RH |
7108 | { |
7109 | bfd_symbol_info (symbol, ret); | |
7110 | } | |
7111 | ||
7112 | /* Return whether a symbol name implies a local symbol. Most targets | |
7113 | use this function for the is_local_label_name entry point, but some | |
7114 | override it. */ | |
7115 | ||
b34976b6 | 7116 | bfd_boolean |
217aa764 AM |
7117 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
7118 | const char *name) | |
252b5132 RH |
7119 | { |
7120 | /* Normal local symbols start with ``.L''. */ | |
7121 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 7122 | return TRUE; |
252b5132 RH |
7123 | |
7124 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
7125 | DWARF debugging symbols starting with ``..''. */ | |
7126 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 7127 | return TRUE; |
252b5132 RH |
7128 | |
7129 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
7130 | emitting DWARF debugging output. I suspect this is actually a | |
7131 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
7132 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
7133 | underscore to be emitted on some ELF targets). For ease of use, | |
7134 | we treat such symbols as local. */ | |
7135 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 7136 | return TRUE; |
252b5132 | 7137 | |
b34976b6 | 7138 | return FALSE; |
252b5132 RH |
7139 | } |
7140 | ||
7141 | alent * | |
217aa764 AM |
7142 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
7143 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
7144 | { |
7145 | abort (); | |
7146 | return NULL; | |
7147 | } | |
7148 | ||
b34976b6 | 7149 | bfd_boolean |
217aa764 AM |
7150 | _bfd_elf_set_arch_mach (bfd *abfd, |
7151 | enum bfd_architecture arch, | |
7152 | unsigned long machine) | |
252b5132 RH |
7153 | { |
7154 | /* If this isn't the right architecture for this backend, and this | |
7155 | isn't the generic backend, fail. */ | |
7156 | if (arch != get_elf_backend_data (abfd)->arch | |
7157 | && arch != bfd_arch_unknown | |
7158 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 7159 | return FALSE; |
252b5132 RH |
7160 | |
7161 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
7162 | } | |
7163 | ||
d1fad7c6 NC |
7164 | /* Find the function to a particular section and offset, |
7165 | for error reporting. */ | |
252b5132 | 7166 | |
b34976b6 | 7167 | static bfd_boolean |
b9d678e0 | 7168 | elf_find_function (bfd *abfd, |
217aa764 AM |
7169 | asection *section, |
7170 | asymbol **symbols, | |
7171 | bfd_vma offset, | |
7172 | const char **filename_ptr, | |
7173 | const char **functionname_ptr) | |
252b5132 | 7174 | { |
252b5132 | 7175 | const char *filename; |
57426232 | 7176 | asymbol *func, *file; |
252b5132 RH |
7177 | bfd_vma low_func; |
7178 | asymbol **p; | |
57426232 JB |
7179 | /* ??? Given multiple file symbols, it is impossible to reliably |
7180 | choose the right file name for global symbols. File symbols are | |
7181 | local symbols, and thus all file symbols must sort before any | |
7182 | global symbols. The ELF spec may be interpreted to say that a | |
7183 | file symbol must sort before other local symbols, but currently | |
7184 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
7185 | make a better choice of file name for local symbols by ignoring | |
7186 | file symbols appearing after a given local symbol. */ | |
7187 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
b9d678e0 | 7188 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 7189 | |
252b5132 RH |
7190 | filename = NULL; |
7191 | func = NULL; | |
57426232 | 7192 | file = NULL; |
252b5132 | 7193 | low_func = 0; |
57426232 | 7194 | state = nothing_seen; |
252b5132 RH |
7195 | |
7196 | for (p = symbols; *p != NULL; p++) | |
7197 | { | |
7198 | elf_symbol_type *q; | |
b9d678e0 | 7199 | unsigned int type; |
252b5132 RH |
7200 | |
7201 | q = (elf_symbol_type *) *p; | |
7202 | ||
b9d678e0 L |
7203 | type = ELF_ST_TYPE (q->internal_elf_sym.st_info); |
7204 | switch (type) | |
252b5132 | 7205 | { |
252b5132 | 7206 | case STT_FILE: |
57426232 JB |
7207 | file = &q->symbol; |
7208 | if (state == symbol_seen) | |
7209 | state = file_after_symbol_seen; | |
7210 | continue; | |
b9d678e0 L |
7211 | default: |
7212 | if (!bed->is_function_type (type)) | |
7213 | break; | |
252b5132 | 7214 | case STT_NOTYPE: |
6b40fcba | 7215 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
7216 | && q->symbol.value >= low_func |
7217 | && q->symbol.value <= offset) | |
7218 | { | |
7219 | func = (asymbol *) q; | |
7220 | low_func = q->symbol.value; | |
a1923858 AM |
7221 | filename = NULL; |
7222 | if (file != NULL | |
7223 | && (ELF_ST_BIND (q->internal_elf_sym.st_info) == STB_LOCAL | |
7224 | || state != file_after_symbol_seen)) | |
57426232 | 7225 | filename = bfd_asymbol_name (file); |
252b5132 RH |
7226 | } |
7227 | break; | |
7228 | } | |
57426232 JB |
7229 | if (state == nothing_seen) |
7230 | state = symbol_seen; | |
252b5132 RH |
7231 | } |
7232 | ||
7233 | if (func == NULL) | |
b34976b6 | 7234 | return FALSE; |
252b5132 | 7235 | |
d1fad7c6 NC |
7236 | if (filename_ptr) |
7237 | *filename_ptr = filename; | |
7238 | if (functionname_ptr) | |
7239 | *functionname_ptr = bfd_asymbol_name (func); | |
7240 | ||
b34976b6 | 7241 | return TRUE; |
d1fad7c6 NC |
7242 | } |
7243 | ||
7244 | /* Find the nearest line to a particular section and offset, | |
7245 | for error reporting. */ | |
7246 | ||
b34976b6 | 7247 | bfd_boolean |
217aa764 AM |
7248 | _bfd_elf_find_nearest_line (bfd *abfd, |
7249 | asection *section, | |
7250 | asymbol **symbols, | |
7251 | bfd_vma offset, | |
7252 | const char **filename_ptr, | |
7253 | const char **functionname_ptr, | |
7254 | unsigned int *line_ptr) | |
d1fad7c6 | 7255 | { |
b34976b6 | 7256 | bfd_boolean found; |
d1fad7c6 NC |
7257 | |
7258 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7259 | filename_ptr, functionname_ptr, |
7260 | line_ptr)) | |
d1fad7c6 NC |
7261 | { |
7262 | if (!*functionname_ptr) | |
4e8a9624 AM |
7263 | elf_find_function (abfd, section, symbols, offset, |
7264 | *filename_ptr ? NULL : filename_ptr, | |
7265 | functionname_ptr); | |
7266 | ||
b34976b6 | 7267 | return TRUE; |
d1fad7c6 NC |
7268 | } |
7269 | ||
7270 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7271 | filename_ptr, functionname_ptr, |
7272 | line_ptr, 0, | |
7273 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
7274 | { |
7275 | if (!*functionname_ptr) | |
4e8a9624 AM |
7276 | elf_find_function (abfd, section, symbols, offset, |
7277 | *filename_ptr ? NULL : filename_ptr, | |
7278 | functionname_ptr); | |
7279 | ||
b34976b6 | 7280 | return TRUE; |
d1fad7c6 NC |
7281 | } |
7282 | ||
7283 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
7284 | &found, filename_ptr, |
7285 | functionname_ptr, line_ptr, | |
7286 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 7287 | return FALSE; |
dc43ada5 | 7288 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 7289 | return TRUE; |
d1fad7c6 NC |
7290 | |
7291 | if (symbols == NULL) | |
b34976b6 | 7292 | return FALSE; |
d1fad7c6 NC |
7293 | |
7294 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 7295 | filename_ptr, functionname_ptr)) |
b34976b6 | 7296 | return FALSE; |
d1fad7c6 | 7297 | |
252b5132 | 7298 | *line_ptr = 0; |
b34976b6 | 7299 | return TRUE; |
252b5132 RH |
7300 | } |
7301 | ||
5420f73d L |
7302 | /* Find the line for a symbol. */ |
7303 | ||
7304 | bfd_boolean | |
7305 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, | |
7306 | const char **filename_ptr, unsigned int *line_ptr) | |
7307 | { | |
7308 | return _bfd_dwarf2_find_line (abfd, symbols, symbol, | |
7309 | filename_ptr, line_ptr, 0, | |
7310 | &elf_tdata (abfd)->dwarf2_find_line_info); | |
7311 | } | |
7312 | ||
4ab527b0 FF |
7313 | /* After a call to bfd_find_nearest_line, successive calls to |
7314 | bfd_find_inliner_info can be used to get source information about | |
7315 | each level of function inlining that terminated at the address | |
7316 | passed to bfd_find_nearest_line. Currently this is only supported | |
7317 | for DWARF2 with appropriate DWARF3 extensions. */ | |
7318 | ||
7319 | bfd_boolean | |
7320 | _bfd_elf_find_inliner_info (bfd *abfd, | |
7321 | const char **filename_ptr, | |
7322 | const char **functionname_ptr, | |
7323 | unsigned int *line_ptr) | |
7324 | { | |
7325 | bfd_boolean found; | |
7326 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
7327 | functionname_ptr, line_ptr, | |
7328 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
7329 | return found; | |
7330 | } | |
7331 | ||
252b5132 | 7332 | int |
a6b96beb | 7333 | _bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 7334 | { |
8ded5a0f AM |
7335 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7336 | int ret = bed->s->sizeof_ehdr; | |
252b5132 | 7337 | |
a6b96beb | 7338 | if (!info->relocatable) |
8ded5a0f | 7339 | { |
62d7a5f6 | 7340 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
8ded5a0f | 7341 | |
62d7a5f6 AM |
7342 | if (phdr_size == (bfd_size_type) -1) |
7343 | { | |
7344 | struct elf_segment_map *m; | |
7345 | ||
7346 | phdr_size = 0; | |
7347 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
7348 | phdr_size += bed->s->sizeof_phdr; | |
8ded5a0f | 7349 | |
62d7a5f6 AM |
7350 | if (phdr_size == 0) |
7351 | phdr_size = get_program_header_size (abfd, info); | |
7352 | } | |
8ded5a0f AM |
7353 | |
7354 | elf_tdata (abfd)->program_header_size = phdr_size; | |
7355 | ret += phdr_size; | |
7356 | } | |
7357 | ||
252b5132 RH |
7358 | return ret; |
7359 | } | |
7360 | ||
b34976b6 | 7361 | bfd_boolean |
217aa764 AM |
7362 | _bfd_elf_set_section_contents (bfd *abfd, |
7363 | sec_ptr section, | |
0f867abe | 7364 | const void *location, |
217aa764 AM |
7365 | file_ptr offset, |
7366 | bfd_size_type count) | |
252b5132 RH |
7367 | { |
7368 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 7369 | bfd_signed_vma pos; |
252b5132 RH |
7370 | |
7371 | if (! abfd->output_has_begun | |
217aa764 | 7372 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 7373 | return FALSE; |
252b5132 RH |
7374 | |
7375 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
7376 | pos = hdr->sh_offset + offset; |
7377 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
7378 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 7379 | return FALSE; |
252b5132 | 7380 | |
b34976b6 | 7381 | return TRUE; |
252b5132 RH |
7382 | } |
7383 | ||
7384 | void | |
217aa764 AM |
7385 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
7386 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
7387 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
7388 | { |
7389 | abort (); | |
7390 | } | |
7391 | ||
252b5132 RH |
7392 | /* Try to convert a non-ELF reloc into an ELF one. */ |
7393 | ||
b34976b6 | 7394 | bfd_boolean |
217aa764 | 7395 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 7396 | { |
c044fabd | 7397 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
7398 | |
7399 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
7400 | { | |
7401 | bfd_reloc_code_real_type code; | |
7402 | reloc_howto_type *howto; | |
7403 | ||
7404 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 7405 | equivalent ELF reloc. */ |
252b5132 RH |
7406 | |
7407 | if (areloc->howto->pc_relative) | |
7408 | { | |
7409 | switch (areloc->howto->bitsize) | |
7410 | { | |
7411 | case 8: | |
7412 | code = BFD_RELOC_8_PCREL; | |
7413 | break; | |
7414 | case 12: | |
7415 | code = BFD_RELOC_12_PCREL; | |
7416 | break; | |
7417 | case 16: | |
7418 | code = BFD_RELOC_16_PCREL; | |
7419 | break; | |
7420 | case 24: | |
7421 | code = BFD_RELOC_24_PCREL; | |
7422 | break; | |
7423 | case 32: | |
7424 | code = BFD_RELOC_32_PCREL; | |
7425 | break; | |
7426 | case 64: | |
7427 | code = BFD_RELOC_64_PCREL; | |
7428 | break; | |
7429 | default: | |
7430 | goto fail; | |
7431 | } | |
7432 | ||
7433 | howto = bfd_reloc_type_lookup (abfd, code); | |
7434 | ||
7435 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
7436 | { | |
7437 | if (howto->pcrel_offset) | |
7438 | areloc->addend += areloc->address; | |
7439 | else | |
7440 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
7441 | } | |
7442 | } | |
7443 | else | |
7444 | { | |
7445 | switch (areloc->howto->bitsize) | |
7446 | { | |
7447 | case 8: | |
7448 | code = BFD_RELOC_8; | |
7449 | break; | |
7450 | case 14: | |
7451 | code = BFD_RELOC_14; | |
7452 | break; | |
7453 | case 16: | |
7454 | code = BFD_RELOC_16; | |
7455 | break; | |
7456 | case 26: | |
7457 | code = BFD_RELOC_26; | |
7458 | break; | |
7459 | case 32: | |
7460 | code = BFD_RELOC_32; | |
7461 | break; | |
7462 | case 64: | |
7463 | code = BFD_RELOC_64; | |
7464 | break; | |
7465 | default: | |
7466 | goto fail; | |
7467 | } | |
7468 | ||
7469 | howto = bfd_reloc_type_lookup (abfd, code); | |
7470 | } | |
7471 | ||
7472 | if (howto) | |
7473 | areloc->howto = howto; | |
7474 | else | |
7475 | goto fail; | |
7476 | } | |
7477 | ||
b34976b6 | 7478 | return TRUE; |
252b5132 RH |
7479 | |
7480 | fail: | |
7481 | (*_bfd_error_handler) | |
d003868e AM |
7482 | (_("%B: unsupported relocation type %s"), |
7483 | abfd, areloc->howto->name); | |
252b5132 | 7484 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7485 | return FALSE; |
252b5132 RH |
7486 | } |
7487 | ||
b34976b6 | 7488 | bfd_boolean |
217aa764 | 7489 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
7490 | { |
7491 | if (bfd_get_format (abfd) == bfd_object) | |
7492 | { | |
b25e3d87 | 7493 | if (elf_tdata (abfd) != NULL && elf_shstrtab (abfd) != NULL) |
2b0f7ef9 | 7494 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 7495 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
7496 | } |
7497 | ||
7498 | return _bfd_generic_close_and_cleanup (abfd); | |
7499 | } | |
7500 | ||
7501 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
7502 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
7503 | range-checking to interfere. There is nothing else to do in processing | |
7504 | this reloc. */ | |
7505 | ||
7506 | bfd_reloc_status_type | |
217aa764 AM |
7507 | _bfd_elf_rel_vtable_reloc_fn |
7508 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 7509 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
7510 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
7511 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
7512 | { |
7513 | return bfd_reloc_ok; | |
7514 | } | |
252b5132 RH |
7515 | \f |
7516 | /* Elf core file support. Much of this only works on native | |
7517 | toolchains, since we rely on knowing the | |
7518 | machine-dependent procfs structure in order to pick | |
c044fabd | 7519 | out details about the corefile. */ |
252b5132 RH |
7520 | |
7521 | #ifdef HAVE_SYS_PROCFS_H | |
16231b7b DG |
7522 | /* Needed for new procfs interface on sparc-solaris. */ |
7523 | # define _STRUCTURED_PROC 1 | |
252b5132 RH |
7524 | # include <sys/procfs.h> |
7525 | #endif | |
7526 | ||
c044fabd | 7527 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
7528 | |
7529 | static int | |
217aa764 | 7530 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
7531 | { |
7532 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
7533 | + (elf_tdata (abfd)->core_pid)); | |
7534 | } | |
7535 | ||
252b5132 RH |
7536 | /* If there isn't a section called NAME, make one, using |
7537 | data from SECT. Note, this function will generate a | |
7538 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 7539 | overwrite it. */ |
252b5132 | 7540 | |
b34976b6 | 7541 | static bfd_boolean |
217aa764 | 7542 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 7543 | { |
c044fabd | 7544 | asection *sect2; |
252b5132 RH |
7545 | |
7546 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 7547 | return TRUE; |
252b5132 | 7548 | |
117ed4f8 | 7549 | sect2 = bfd_make_section_with_flags (abfd, name, sect->flags); |
252b5132 | 7550 | if (sect2 == NULL) |
b34976b6 | 7551 | return FALSE; |
252b5132 | 7552 | |
eea6121a | 7553 | sect2->size = sect->size; |
252b5132 | 7554 | sect2->filepos = sect->filepos; |
252b5132 | 7555 | sect2->alignment_power = sect->alignment_power; |
b34976b6 | 7556 | return TRUE; |
252b5132 RH |
7557 | } |
7558 | ||
bb0082d6 AM |
7559 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
7560 | actually creates up to two pseudosections: | |
7561 | - For the single-threaded case, a section named NAME, unless | |
7562 | such a section already exists. | |
7563 | - For the multi-threaded case, a section named "NAME/PID", where | |
7564 | PID is elfcore_make_pid (abfd). | |
7565 | Both pseudosections have identical contents. */ | |
b34976b6 | 7566 | bfd_boolean |
217aa764 AM |
7567 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
7568 | char *name, | |
7569 | size_t size, | |
7570 | ufile_ptr filepos) | |
bb0082d6 AM |
7571 | { |
7572 | char buf[100]; | |
7573 | char *threaded_name; | |
d4c88bbb | 7574 | size_t len; |
bb0082d6 AM |
7575 | asection *sect; |
7576 | ||
7577 | /* Build the section name. */ | |
7578 | ||
7579 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 7580 | len = strlen (buf) + 1; |
a50b1753 | 7581 | threaded_name = (char *) bfd_alloc (abfd, len); |
bb0082d6 | 7582 | if (threaded_name == NULL) |
b34976b6 | 7583 | return FALSE; |
d4c88bbb | 7584 | memcpy (threaded_name, buf, len); |
bb0082d6 | 7585 | |
117ed4f8 AM |
7586 | sect = bfd_make_section_anyway_with_flags (abfd, threaded_name, |
7587 | SEC_HAS_CONTENTS); | |
bb0082d6 | 7588 | if (sect == NULL) |
b34976b6 | 7589 | return FALSE; |
eea6121a | 7590 | sect->size = size; |
bb0082d6 | 7591 | sect->filepos = filepos; |
bb0082d6 AM |
7592 | sect->alignment_power = 2; |
7593 | ||
936e320b | 7594 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
7595 | } |
7596 | ||
252b5132 | 7597 | /* prstatus_t exists on: |
4a938328 | 7598 | solaris 2.5+ |
252b5132 RH |
7599 | linux 2.[01] + glibc |
7600 | unixware 4.2 | |
7601 | */ | |
7602 | ||
7603 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 7604 | |
b34976b6 | 7605 | static bfd_boolean |
217aa764 | 7606 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7607 | { |
eea6121a | 7608 | size_t size; |
7ee38065 | 7609 | int offset; |
252b5132 | 7610 | |
4a938328 MS |
7611 | if (note->descsz == sizeof (prstatus_t)) |
7612 | { | |
7613 | prstatus_t prstat; | |
252b5132 | 7614 | |
eea6121a | 7615 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7616 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 7617 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 7618 | |
fa49d224 NC |
7619 | /* Do not overwrite the core signal if it |
7620 | has already been set by another thread. */ | |
7621 | if (elf_tdata (abfd)->core_signal == 0) | |
7622 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 7623 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 7624 | |
4a938328 MS |
7625 | /* pr_who exists on: |
7626 | solaris 2.5+ | |
7627 | unixware 4.2 | |
7628 | pr_who doesn't exist on: | |
7629 | linux 2.[01] | |
7630 | */ | |
252b5132 | 7631 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 7632 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 7633 | #endif |
4a938328 | 7634 | } |
7ee38065 | 7635 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
7636 | else if (note->descsz == sizeof (prstatus32_t)) |
7637 | { | |
7638 | /* 64-bit host, 32-bit corefile */ | |
7639 | prstatus32_t prstat; | |
7640 | ||
eea6121a | 7641 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7642 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
7643 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
7644 | ||
fa49d224 NC |
7645 | /* Do not overwrite the core signal if it |
7646 | has already been set by another thread. */ | |
7647 | if (elf_tdata (abfd)->core_signal == 0) | |
7648 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
7649 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
7650 | ||
7651 | /* pr_who exists on: | |
7652 | solaris 2.5+ | |
7653 | unixware 4.2 | |
7654 | pr_who doesn't exist on: | |
7655 | linux 2.[01] | |
7656 | */ | |
7ee38065 | 7657 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
7658 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
7659 | #endif | |
7660 | } | |
7ee38065 | 7661 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
7662 | else |
7663 | { | |
7664 | /* Fail - we don't know how to handle any other | |
7665 | note size (ie. data object type). */ | |
b34976b6 | 7666 | return TRUE; |
4a938328 | 7667 | } |
252b5132 | 7668 | |
bb0082d6 | 7669 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 7670 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 7671 | size, note->descpos + offset); |
252b5132 RH |
7672 | } |
7673 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
7674 | ||
bb0082d6 | 7675 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 7676 | static bfd_boolean |
217aa764 AM |
7677 | elfcore_make_note_pseudosection (bfd *abfd, |
7678 | char *name, | |
7679 | Elf_Internal_Note *note) | |
252b5132 | 7680 | { |
936e320b AM |
7681 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7682 | note->descsz, note->descpos); | |
252b5132 RH |
7683 | } |
7684 | ||
ff08c6bb JB |
7685 | /* There isn't a consistent prfpregset_t across platforms, |
7686 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7687 | data structure apart. */ |
7688 | ||
b34976b6 | 7689 | static bfd_boolean |
217aa764 | 7690 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7691 | { |
7692 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7693 | } | |
7694 | ||
ff08c6bb | 7695 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
971d4640 | 7696 | type of NT_PRXFPREG. Just include the whole note's contents |
ff08c6bb | 7697 | literally. */ |
c044fabd | 7698 | |
b34976b6 | 7699 | static bfd_boolean |
217aa764 | 7700 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7701 | { |
7702 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7703 | } | |
7704 | ||
4339cae0 L |
7705 | /* Linux dumps the Intel XSAVE extended state in a note named "LINUX" |
7706 | with a note type of NT_X86_XSTATE. Just include the whole note's | |
7707 | contents literally. */ | |
7708 | ||
7709 | static bfd_boolean | |
7710 | elfcore_grok_xstatereg (bfd *abfd, Elf_Internal_Note *note) | |
7711 | { | |
7712 | return elfcore_make_note_pseudosection (abfd, ".reg-xstate", note); | |
7713 | } | |
7714 | ||
97753bd5 AM |
7715 | static bfd_boolean |
7716 | elfcore_grok_ppc_vmx (bfd *abfd, Elf_Internal_Note *note) | |
7717 | { | |
7718 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vmx", note); | |
7719 | } | |
7720 | ||
89eeb0bc LM |
7721 | static bfd_boolean |
7722 | elfcore_grok_ppc_vsx (bfd *abfd, Elf_Internal_Note *note) | |
7723 | { | |
7724 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vsx", note); | |
7725 | } | |
97753bd5 | 7726 | |
0675e188 UW |
7727 | static bfd_boolean |
7728 | elfcore_grok_s390_high_gprs (bfd *abfd, Elf_Internal_Note *note) | |
7729 | { | |
7730 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-high-gprs", note); | |
7731 | } | |
7732 | ||
d7eeb400 MS |
7733 | static bfd_boolean |
7734 | elfcore_grok_s390_timer (bfd *abfd, Elf_Internal_Note *note) | |
7735 | { | |
7736 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-timer", note); | |
7737 | } | |
7738 | ||
7739 | static bfd_boolean | |
7740 | elfcore_grok_s390_todcmp (bfd *abfd, Elf_Internal_Note *note) | |
7741 | { | |
7742 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-todcmp", note); | |
7743 | } | |
7744 | ||
7745 | static bfd_boolean | |
7746 | elfcore_grok_s390_todpreg (bfd *abfd, Elf_Internal_Note *note) | |
7747 | { | |
7748 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-todpreg", note); | |
7749 | } | |
7750 | ||
7751 | static bfd_boolean | |
7752 | elfcore_grok_s390_ctrs (bfd *abfd, Elf_Internal_Note *note) | |
7753 | { | |
7754 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-ctrs", note); | |
7755 | } | |
7756 | ||
7757 | static bfd_boolean | |
7758 | elfcore_grok_s390_prefix (bfd *abfd, Elf_Internal_Note *note) | |
7759 | { | |
7760 | return elfcore_make_note_pseudosection (abfd, ".reg-s390-prefix", note); | |
7761 | } | |
7762 | ||
252b5132 | 7763 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7764 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7765 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7766 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7767 | #endif | |
252b5132 RH |
7768 | #endif |
7769 | ||
7770 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7771 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7772 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7773 | typedef psinfo32_t elfcore_psinfo32_t; |
7774 | #endif | |
252b5132 RH |
7775 | #endif |
7776 | ||
252b5132 RH |
7777 | /* return a malloc'ed copy of a string at START which is at |
7778 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7779 | the copy will always have a terminating '\0'. */ |
252b5132 | 7780 | |
936e320b | 7781 | char * |
217aa764 | 7782 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7783 | { |
dc810e39 | 7784 | char *dups; |
a50b1753 | 7785 | char *end = (char *) memchr (start, '\0', max); |
dc810e39 | 7786 | size_t len; |
252b5132 RH |
7787 | |
7788 | if (end == NULL) | |
7789 | len = max; | |
7790 | else | |
7791 | len = end - start; | |
7792 | ||
a50b1753 | 7793 | dups = (char *) bfd_alloc (abfd, len + 1); |
dc810e39 | 7794 | if (dups == NULL) |
252b5132 RH |
7795 | return NULL; |
7796 | ||
dc810e39 AM |
7797 | memcpy (dups, start, len); |
7798 | dups[len] = '\0'; | |
252b5132 | 7799 | |
dc810e39 | 7800 | return dups; |
252b5132 RH |
7801 | } |
7802 | ||
bb0082d6 | 7803 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7804 | static bfd_boolean |
217aa764 | 7805 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7806 | { |
4a938328 MS |
7807 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7808 | { | |
7809 | elfcore_psinfo_t psinfo; | |
252b5132 | 7810 | |
7ee38065 | 7811 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7812 | |
4a938328 | 7813 | elf_tdata (abfd)->core_program |
936e320b AM |
7814 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7815 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7816 | |
4a938328 | 7817 | elf_tdata (abfd)->core_command |
936e320b AM |
7818 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7819 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7820 | } |
7ee38065 | 7821 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7822 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7823 | { | |
7824 | /* 64-bit host, 32-bit corefile */ | |
7825 | elfcore_psinfo32_t psinfo; | |
7826 | ||
7ee38065 | 7827 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7828 | |
4a938328 | 7829 | elf_tdata (abfd)->core_program |
936e320b AM |
7830 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7831 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7832 | |
7833 | elf_tdata (abfd)->core_command | |
936e320b AM |
7834 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7835 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7836 | } |
7837 | #endif | |
7838 | ||
7839 | else | |
7840 | { | |
7841 | /* Fail - we don't know how to handle any other | |
7842 | note size (ie. data object type). */ | |
b34976b6 | 7843 | return TRUE; |
4a938328 | 7844 | } |
252b5132 RH |
7845 | |
7846 | /* Note that for some reason, a spurious space is tacked | |
7847 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7848 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7849 | |
7850 | { | |
c044fabd | 7851 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7852 | int n = strlen (command); |
7853 | ||
7854 | if (0 < n && command[n - 1] == ' ') | |
7855 | command[n - 1] = '\0'; | |
7856 | } | |
7857 | ||
b34976b6 | 7858 | return TRUE; |
252b5132 RH |
7859 | } |
7860 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7861 | ||
252b5132 | 7862 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7863 | static bfd_boolean |
217aa764 | 7864 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7865 | { |
f572a39d AM |
7866 | if (note->descsz == sizeof (pstatus_t) |
7867 | #if defined (HAVE_PXSTATUS_T) | |
7868 | || note->descsz == sizeof (pxstatus_t) | |
7869 | #endif | |
7870 | ) | |
4a938328 MS |
7871 | { |
7872 | pstatus_t pstat; | |
252b5132 | 7873 | |
4a938328 | 7874 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7875 | |
4a938328 MS |
7876 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7877 | } | |
7ee38065 | 7878 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7879 | else if (note->descsz == sizeof (pstatus32_t)) |
7880 | { | |
7881 | /* 64-bit host, 32-bit corefile */ | |
7882 | pstatus32_t pstat; | |
252b5132 | 7883 | |
4a938328 | 7884 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7885 | |
4a938328 MS |
7886 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7887 | } | |
7888 | #endif | |
252b5132 RH |
7889 | /* Could grab some more details from the "representative" |
7890 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7891 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7892 | |
b34976b6 | 7893 | return TRUE; |
252b5132 RH |
7894 | } |
7895 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7896 | ||
252b5132 | 7897 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7898 | static bfd_boolean |
217aa764 | 7899 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7900 | { |
7901 | lwpstatus_t lwpstat; | |
7902 | char buf[100]; | |
c044fabd | 7903 | char *name; |
d4c88bbb | 7904 | size_t len; |
c044fabd | 7905 | asection *sect; |
252b5132 | 7906 | |
f572a39d AM |
7907 | if (note->descsz != sizeof (lwpstat) |
7908 | #if defined (HAVE_LWPXSTATUS_T) | |
7909 | && note->descsz != sizeof (lwpxstatus_t) | |
7910 | #endif | |
7911 | ) | |
b34976b6 | 7912 | return TRUE; |
252b5132 RH |
7913 | |
7914 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7915 | ||
7916 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
a1504221 JB |
7917 | /* Do not overwrite the core signal if it has already been set by |
7918 | another thread. */ | |
7919 | if (elf_tdata (abfd)->core_signal == 0) | |
7920 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
252b5132 | 7921 | |
c044fabd | 7922 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7923 | |
7924 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7925 | len = strlen (buf) + 1; |
217aa764 | 7926 | name = bfd_alloc (abfd, len); |
252b5132 | 7927 | if (name == NULL) |
b34976b6 | 7928 | return FALSE; |
d4c88bbb | 7929 | memcpy (name, buf, len); |
252b5132 | 7930 | |
117ed4f8 | 7931 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7932 | if (sect == NULL) |
b34976b6 | 7933 | return FALSE; |
252b5132 RH |
7934 | |
7935 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7936 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7937 | sect->filepos = note->descpos |
7938 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7939 | #endif | |
7940 | ||
7941 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7942 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7943 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7944 | #endif | |
7945 | ||
252b5132 RH |
7946 | sect->alignment_power = 2; |
7947 | ||
7948 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7949 | return FALSE; |
252b5132 RH |
7950 | |
7951 | /* Make a ".reg2/999" section */ | |
7952 | ||
7953 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7954 | len = strlen (buf) + 1; |
217aa764 | 7955 | name = bfd_alloc (abfd, len); |
252b5132 | 7956 | if (name == NULL) |
b34976b6 | 7957 | return FALSE; |
d4c88bbb | 7958 | memcpy (name, buf, len); |
252b5132 | 7959 | |
117ed4f8 | 7960 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7961 | if (sect == NULL) |
b34976b6 | 7962 | return FALSE; |
252b5132 RH |
7963 | |
7964 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7965 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7966 | sect->filepos = note->descpos |
7967 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7968 | #endif | |
7969 | ||
7970 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7971 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7972 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7973 | #endif | |
7974 | ||
252b5132 RH |
7975 | sect->alignment_power = 2; |
7976 | ||
936e320b | 7977 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7978 | } |
7979 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7980 | ||
b34976b6 | 7981 | static bfd_boolean |
217aa764 | 7982 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7983 | { |
7984 | char buf[30]; | |
c044fabd | 7985 | char *name; |
d4c88bbb | 7986 | size_t len; |
c044fabd | 7987 | asection *sect; |
4a6636fb PA |
7988 | int type; |
7989 | int is_active_thread; | |
7990 | bfd_vma base_addr; | |
16e9c715 | 7991 | |
4a6636fb | 7992 | if (note->descsz < 728) |
b34976b6 | 7993 | return TRUE; |
16e9c715 | 7994 | |
4a6636fb PA |
7995 | if (! CONST_STRNEQ (note->namedata, "win32")) |
7996 | return TRUE; | |
7997 | ||
7998 | type = bfd_get_32 (abfd, note->descdata); | |
c044fabd | 7999 | |
4a6636fb | 8000 | switch (type) |
16e9c715 | 8001 | { |
4a6636fb | 8002 | case 1 /* NOTE_INFO_PROCESS */: |
16e9c715 | 8003 | /* FIXME: need to add ->core_command. */ |
4a6636fb PA |
8004 | /* process_info.pid */ |
8005 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 8); | |
8006 | /* process_info.signal */ | |
8007 | elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 12); | |
c044fabd | 8008 | break; |
16e9c715 | 8009 | |
4a6636fb | 8010 | case 2 /* NOTE_INFO_THREAD */: |
16e9c715 | 8011 | /* Make a ".reg/999" section. */ |
4a6636fb PA |
8012 | /* thread_info.tid */ |
8013 | sprintf (buf, ".reg/%ld", (long) bfd_get_32 (abfd, note->descdata + 8)); | |
c044fabd | 8014 | |
d4c88bbb | 8015 | len = strlen (buf) + 1; |
a50b1753 | 8016 | name = (char *) bfd_alloc (abfd, len); |
16e9c715 | 8017 | if (name == NULL) |
b34976b6 | 8018 | return FALSE; |
c044fabd | 8019 | |
d4c88bbb | 8020 | memcpy (name, buf, len); |
16e9c715 | 8021 | |
117ed4f8 | 8022 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
16e9c715 | 8023 | if (sect == NULL) |
b34976b6 | 8024 | return FALSE; |
c044fabd | 8025 | |
4a6636fb PA |
8026 | /* sizeof (thread_info.thread_context) */ |
8027 | sect->size = 716; | |
8028 | /* offsetof (thread_info.thread_context) */ | |
8029 | sect->filepos = note->descpos + 12; | |
16e9c715 NC |
8030 | sect->alignment_power = 2; |
8031 | ||
4a6636fb PA |
8032 | /* thread_info.is_active_thread */ |
8033 | is_active_thread = bfd_get_32 (abfd, note->descdata + 8); | |
8034 | ||
8035 | if (is_active_thread) | |
16e9c715 | 8036 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) |
b34976b6 | 8037 | return FALSE; |
16e9c715 NC |
8038 | break; |
8039 | ||
4a6636fb | 8040 | case 3 /* NOTE_INFO_MODULE */: |
16e9c715 | 8041 | /* Make a ".module/xxxxxxxx" section. */ |
4a6636fb PA |
8042 | /* module_info.base_address */ |
8043 | base_addr = bfd_get_32 (abfd, note->descdata + 4); | |
0af1713e | 8044 | sprintf (buf, ".module/%08lx", (unsigned long) base_addr); |
c044fabd | 8045 | |
d4c88bbb | 8046 | len = strlen (buf) + 1; |
a50b1753 | 8047 | name = (char *) bfd_alloc (abfd, len); |
16e9c715 | 8048 | if (name == NULL) |
b34976b6 | 8049 | return FALSE; |
c044fabd | 8050 | |
d4c88bbb | 8051 | memcpy (name, buf, len); |
252b5132 | 8052 | |
117ed4f8 | 8053 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
c044fabd | 8054 | |
16e9c715 | 8055 | if (sect == NULL) |
b34976b6 | 8056 | return FALSE; |
c044fabd | 8057 | |
eea6121a | 8058 | sect->size = note->descsz; |
16e9c715 | 8059 | sect->filepos = note->descpos; |
16e9c715 NC |
8060 | sect->alignment_power = 2; |
8061 | break; | |
8062 | ||
8063 | default: | |
b34976b6 | 8064 | return TRUE; |
16e9c715 NC |
8065 | } |
8066 | ||
b34976b6 | 8067 | return TRUE; |
16e9c715 | 8068 | } |
252b5132 | 8069 | |
b34976b6 | 8070 | static bfd_boolean |
217aa764 | 8071 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 8072 | { |
9c5bfbb7 | 8073 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 8074 | |
252b5132 RH |
8075 | switch (note->type) |
8076 | { | |
8077 | default: | |
b34976b6 | 8078 | return TRUE; |
252b5132 | 8079 | |
252b5132 | 8080 | case NT_PRSTATUS: |
bb0082d6 AM |
8081 | if (bed->elf_backend_grok_prstatus) |
8082 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 8083 | return TRUE; |
bb0082d6 | 8084 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 8085 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 8086 | #else |
b34976b6 | 8087 | return TRUE; |
252b5132 RH |
8088 | #endif |
8089 | ||
8090 | #if defined (HAVE_PSTATUS_T) | |
8091 | case NT_PSTATUS: | |
8092 | return elfcore_grok_pstatus (abfd, note); | |
8093 | #endif | |
8094 | ||
8095 | #if defined (HAVE_LWPSTATUS_T) | |
8096 | case NT_LWPSTATUS: | |
8097 | return elfcore_grok_lwpstatus (abfd, note); | |
8098 | #endif | |
8099 | ||
8100 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
8101 | return elfcore_grok_prfpreg (abfd, note); | |
8102 | ||
c044fabd | 8103 | case NT_WIN32PSTATUS: |
16e9c715 | 8104 | return elfcore_grok_win32pstatus (abfd, note); |
16e9c715 | 8105 | |
c044fabd | 8106 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
8107 | if (note->namesz == 6 |
8108 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
8109 | return elfcore_grok_prxfpreg (abfd, note); |
8110 | else | |
b34976b6 | 8111 | return TRUE; |
ff08c6bb | 8112 | |
4339cae0 L |
8113 | case NT_X86_XSTATE: /* Linux XSAVE extension */ |
8114 | if (note->namesz == 6 | |
8115 | && strcmp (note->namedata, "LINUX") == 0) | |
8116 | return elfcore_grok_xstatereg (abfd, note); | |
8117 | else | |
8118 | return TRUE; | |
8119 | ||
97753bd5 AM |
8120 | case NT_PPC_VMX: |
8121 | if (note->namesz == 6 | |
8122 | && strcmp (note->namedata, "LINUX") == 0) | |
8123 | return elfcore_grok_ppc_vmx (abfd, note); | |
8124 | else | |
8125 | return TRUE; | |
8126 | ||
89eeb0bc LM |
8127 | case NT_PPC_VSX: |
8128 | if (note->namesz == 6 | |
8129 | && strcmp (note->namedata, "LINUX") == 0) | |
8130 | return elfcore_grok_ppc_vsx (abfd, note); | |
8131 | else | |
8132 | return TRUE; | |
8133 | ||
0675e188 UW |
8134 | case NT_S390_HIGH_GPRS: |
8135 | if (note->namesz == 6 | |
8136 | && strcmp (note->namedata, "LINUX") == 0) | |
8137 | return elfcore_grok_s390_high_gprs (abfd, note); | |
8138 | else | |
8139 | return TRUE; | |
8140 | ||
d7eeb400 MS |
8141 | case NT_S390_TIMER: |
8142 | if (note->namesz == 6 | |
8143 | && strcmp (note->namedata, "LINUX") == 0) | |
8144 | return elfcore_grok_s390_timer (abfd, note); | |
8145 | else | |
8146 | return TRUE; | |
8147 | ||
8148 | case NT_S390_TODCMP: | |
8149 | if (note->namesz == 6 | |
8150 | && strcmp (note->namedata, "LINUX") == 0) | |
8151 | return elfcore_grok_s390_todcmp (abfd, note); | |
8152 | else | |
8153 | return TRUE; | |
8154 | ||
8155 | case NT_S390_TODPREG: | |
8156 | if (note->namesz == 6 | |
8157 | && strcmp (note->namedata, "LINUX") == 0) | |
8158 | return elfcore_grok_s390_todpreg (abfd, note); | |
8159 | else | |
8160 | return TRUE; | |
8161 | ||
8162 | case NT_S390_CTRS: | |
8163 | if (note->namesz == 6 | |
8164 | && strcmp (note->namedata, "LINUX") == 0) | |
8165 | return elfcore_grok_s390_ctrs (abfd, note); | |
8166 | else | |
8167 | return TRUE; | |
8168 | ||
8169 | case NT_S390_PREFIX: | |
8170 | if (note->namesz == 6 | |
8171 | && strcmp (note->namedata, "LINUX") == 0) | |
8172 | return elfcore_grok_s390_prefix (abfd, note); | |
8173 | else | |
8174 | return TRUE; | |
8175 | ||
252b5132 RH |
8176 | case NT_PRPSINFO: |
8177 | case NT_PSINFO: | |
bb0082d6 AM |
8178 | if (bed->elf_backend_grok_psinfo) |
8179 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 8180 | return TRUE; |
bb0082d6 | 8181 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 8182 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 8183 | #else |
b34976b6 | 8184 | return TRUE; |
252b5132 | 8185 | #endif |
3333a7c3 RM |
8186 | |
8187 | case NT_AUXV: | |
8188 | { | |
117ed4f8 AM |
8189 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", |
8190 | SEC_HAS_CONTENTS); | |
3333a7c3 RM |
8191 | |
8192 | if (sect == NULL) | |
8193 | return FALSE; | |
eea6121a | 8194 | sect->size = note->descsz; |
3333a7c3 | 8195 | sect->filepos = note->descpos; |
3333a7c3 RM |
8196 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; |
8197 | ||
8198 | return TRUE; | |
8199 | } | |
252b5132 RH |
8200 | } |
8201 | } | |
8202 | ||
718175fa JK |
8203 | static bfd_boolean |
8204 | elfobj_grok_gnu_build_id (bfd *abfd, Elf_Internal_Note *note) | |
8205 | { | |
8206 | elf_tdata (abfd)->build_id_size = note->descsz; | |
a50b1753 | 8207 | elf_tdata (abfd)->build_id = (bfd_byte *) bfd_alloc (abfd, note->descsz); |
718175fa JK |
8208 | if (elf_tdata (abfd)->build_id == NULL) |
8209 | return FALSE; | |
8210 | ||
8211 | memcpy (elf_tdata (abfd)->build_id, note->descdata, note->descsz); | |
8212 | ||
8213 | return TRUE; | |
8214 | } | |
8215 | ||
8216 | static bfd_boolean | |
8217 | elfobj_grok_gnu_note (bfd *abfd, Elf_Internal_Note *note) | |
8218 | { | |
8219 | switch (note->type) | |
8220 | { | |
8221 | default: | |
8222 | return TRUE; | |
8223 | ||
8224 | case NT_GNU_BUILD_ID: | |
8225 | return elfobj_grok_gnu_build_id (abfd, note); | |
8226 | } | |
8227 | } | |
8228 | ||
b34976b6 | 8229 | static bfd_boolean |
217aa764 | 8230 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
8231 | { |
8232 | char *cp; | |
8233 | ||
8234 | cp = strchr (note->namedata, '@'); | |
8235 | if (cp != NULL) | |
8236 | { | |
d2b64500 | 8237 | *lwpidp = atoi(cp + 1); |
b34976b6 | 8238 | return TRUE; |
50b2bdb7 | 8239 | } |
b34976b6 | 8240 | return FALSE; |
50b2bdb7 AM |
8241 | } |
8242 | ||
b34976b6 | 8243 | static bfd_boolean |
217aa764 | 8244 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 | 8245 | { |
50b2bdb7 AM |
8246 | /* Signal number at offset 0x08. */ |
8247 | elf_tdata (abfd)->core_signal | |
8248 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
8249 | ||
8250 | /* Process ID at offset 0x50. */ | |
8251 | elf_tdata (abfd)->core_pid | |
8252 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
8253 | ||
8254 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
8255 | elf_tdata (abfd)->core_command | |
8256 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
8257 | ||
7720ba9f MK |
8258 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
8259 | note); | |
50b2bdb7 AM |
8260 | } |
8261 | ||
b34976b6 | 8262 | static bfd_boolean |
217aa764 | 8263 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
8264 | { |
8265 | int lwp; | |
8266 | ||
8267 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
8268 | elf_tdata (abfd)->core_lwpid = lwp; | |
8269 | ||
b4db1224 | 8270 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
8271 | { |
8272 | /* NetBSD-specific core "procinfo". Note that we expect to | |
08a40648 AM |
8273 | find this note before any of the others, which is fine, |
8274 | since the kernel writes this note out first when it | |
8275 | creates a core file. */ | |
47d9a591 | 8276 | |
50b2bdb7 AM |
8277 | return elfcore_grok_netbsd_procinfo (abfd, note); |
8278 | } | |
8279 | ||
b4db1224 JT |
8280 | /* As of Jan 2002 there are no other machine-independent notes |
8281 | defined for NetBSD core files. If the note type is less | |
8282 | than the start of the machine-dependent note types, we don't | |
8283 | understand it. */ | |
47d9a591 | 8284 | |
b4db1224 | 8285 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 8286 | return TRUE; |
50b2bdb7 AM |
8287 | |
8288 | ||
8289 | switch (bfd_get_arch (abfd)) | |
8290 | { | |
08a40648 AM |
8291 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and |
8292 | PT_GETFPREGS == mach+2. */ | |
50b2bdb7 AM |
8293 | |
8294 | case bfd_arch_alpha: | |
8295 | case bfd_arch_sparc: | |
8296 | switch (note->type) | |
08a40648 AM |
8297 | { |
8298 | case NT_NETBSDCORE_FIRSTMACH+0: | |
8299 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 8300 | |
08a40648 AM |
8301 | case NT_NETBSDCORE_FIRSTMACH+2: |
8302 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 8303 | |
08a40648 AM |
8304 | default: |
8305 | return TRUE; | |
8306 | } | |
50b2bdb7 | 8307 | |
08a40648 AM |
8308 | /* On all other arch's, PT_GETREGS == mach+1 and |
8309 | PT_GETFPREGS == mach+3. */ | |
50b2bdb7 AM |
8310 | |
8311 | default: | |
8312 | switch (note->type) | |
08a40648 AM |
8313 | { |
8314 | case NT_NETBSDCORE_FIRSTMACH+1: | |
8315 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 8316 | |
08a40648 AM |
8317 | case NT_NETBSDCORE_FIRSTMACH+3: |
8318 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 8319 | |
08a40648 AM |
8320 | default: |
8321 | return TRUE; | |
8322 | } | |
50b2bdb7 AM |
8323 | } |
8324 | /* NOTREACHED */ | |
8325 | } | |
8326 | ||
67cc5033 MK |
8327 | static bfd_boolean |
8328 | elfcore_grok_openbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) | |
8329 | { | |
8330 | /* Signal number at offset 0x08. */ | |
8331 | elf_tdata (abfd)->core_signal | |
8332 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
8333 | ||
8334 | /* Process ID at offset 0x20. */ | |
8335 | elf_tdata (abfd)->core_pid | |
8336 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x20); | |
8337 | ||
8338 | /* Command name at 0x48 (max 32 bytes, including nul). */ | |
8339 | elf_tdata (abfd)->core_command | |
8340 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x48, 31); | |
8341 | ||
8342 | return TRUE; | |
8343 | } | |
8344 | ||
8345 | static bfd_boolean | |
8346 | elfcore_grok_openbsd_note (bfd *abfd, Elf_Internal_Note *note) | |
8347 | { | |
8348 | if (note->type == NT_OPENBSD_PROCINFO) | |
8349 | return elfcore_grok_openbsd_procinfo (abfd, note); | |
8350 | ||
8351 | if (note->type == NT_OPENBSD_REGS) | |
8352 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
8353 | ||
8354 | if (note->type == NT_OPENBSD_FPREGS) | |
8355 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
8356 | ||
8357 | if (note->type == NT_OPENBSD_XFPREGS) | |
8358 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
8359 | ||
8360 | if (note->type == NT_OPENBSD_AUXV) | |
8361 | { | |
8362 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", | |
8363 | SEC_HAS_CONTENTS); | |
8364 | ||
8365 | if (sect == NULL) | |
8366 | return FALSE; | |
8367 | sect->size = note->descsz; | |
8368 | sect->filepos = note->descpos; | |
8369 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
8370 | ||
8371 | return TRUE; | |
8372 | } | |
8373 | ||
8374 | if (note->type == NT_OPENBSD_WCOOKIE) | |
8375 | { | |
8376 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".wcookie", | |
8377 | SEC_HAS_CONTENTS); | |
8378 | ||
8379 | if (sect == NULL) | |
8380 | return FALSE; | |
8381 | sect->size = note->descsz; | |
8382 | sect->filepos = note->descpos; | |
8383 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
8384 | ||
8385 | return TRUE; | |
8386 | } | |
8387 | ||
8388 | return TRUE; | |
8389 | } | |
8390 | ||
07c6e936 | 8391 | static bfd_boolean |
d3fd4074 | 8392 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid) |
07c6e936 NC |
8393 | { |
8394 | void *ddata = note->descdata; | |
8395 | char buf[100]; | |
8396 | char *name; | |
8397 | asection *sect; | |
f8843e87 AM |
8398 | short sig; |
8399 | unsigned flags; | |
07c6e936 NC |
8400 | |
8401 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
8402 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
8403 | ||
f8843e87 AM |
8404 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
8405 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
8406 | ||
8407 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
8408 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
8409 | |
8410 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
8411 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
8412 | { | |
8413 | elf_tdata (abfd)->core_signal = sig; | |
8414 | elf_tdata (abfd)->core_lwpid = *tid; | |
8415 | } | |
07c6e936 | 8416 | |
f8843e87 AM |
8417 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
8418 | do not come from signals so we make sure we set the current | |
8419 | thread just in case. */ | |
8420 | if (flags & 0x00000080) | |
8421 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
8422 | |
8423 | /* Make a ".qnx_core_status/%d" section. */ | |
d3fd4074 | 8424 | sprintf (buf, ".qnx_core_status/%ld", *tid); |
07c6e936 | 8425 | |
a50b1753 | 8426 | name = (char *) bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8427 | if (name == NULL) |
8428 | return FALSE; | |
8429 | strcpy (name, buf); | |
8430 | ||
117ed4f8 | 8431 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8432 | if (sect == NULL) |
8433 | return FALSE; | |
8434 | ||
eea6121a | 8435 | sect->size = note->descsz; |
07c6e936 | 8436 | sect->filepos = note->descpos; |
07c6e936 NC |
8437 | sect->alignment_power = 2; |
8438 | ||
8439 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
8440 | } | |
8441 | ||
8442 | static bfd_boolean | |
d69f560c KW |
8443 | elfcore_grok_nto_regs (bfd *abfd, |
8444 | Elf_Internal_Note *note, | |
d3fd4074 | 8445 | long tid, |
d69f560c | 8446 | char *base) |
07c6e936 NC |
8447 | { |
8448 | char buf[100]; | |
8449 | char *name; | |
8450 | asection *sect; | |
8451 | ||
d69f560c | 8452 | /* Make a "(base)/%d" section. */ |
d3fd4074 | 8453 | sprintf (buf, "%s/%ld", base, tid); |
07c6e936 | 8454 | |
a50b1753 | 8455 | name = (char *) bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8456 | if (name == NULL) |
8457 | return FALSE; | |
8458 | strcpy (name, buf); | |
8459 | ||
117ed4f8 | 8460 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8461 | if (sect == NULL) |
8462 | return FALSE; | |
8463 | ||
eea6121a | 8464 | sect->size = note->descsz; |
07c6e936 | 8465 | sect->filepos = note->descpos; |
07c6e936 NC |
8466 | sect->alignment_power = 2; |
8467 | ||
f8843e87 AM |
8468 | /* This is the current thread. */ |
8469 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 8470 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
8471 | |
8472 | return TRUE; | |
07c6e936 NC |
8473 | } |
8474 | ||
8475 | #define BFD_QNT_CORE_INFO 7 | |
8476 | #define BFD_QNT_CORE_STATUS 8 | |
8477 | #define BFD_QNT_CORE_GREG 9 | |
8478 | #define BFD_QNT_CORE_FPREG 10 | |
8479 | ||
8480 | static bfd_boolean | |
217aa764 | 8481 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
8482 | { |
8483 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 8484 | tid from the previous call to pass down to the next gregs |
07c6e936 | 8485 | function. */ |
d3fd4074 | 8486 | static long tid = 1; |
07c6e936 NC |
8487 | |
8488 | switch (note->type) | |
8489 | { | |
d69f560c KW |
8490 | case BFD_QNT_CORE_INFO: |
8491 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
8492 | case BFD_QNT_CORE_STATUS: | |
8493 | return elfcore_grok_nto_status (abfd, note, &tid); | |
8494 | case BFD_QNT_CORE_GREG: | |
8495 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
8496 | case BFD_QNT_CORE_FPREG: | |
8497 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
8498 | default: | |
8499 | return TRUE; | |
07c6e936 NC |
8500 | } |
8501 | } | |
8502 | ||
b15fa79e AM |
8503 | static bfd_boolean |
8504 | elfcore_grok_spu_note (bfd *abfd, Elf_Internal_Note *note) | |
8505 | { | |
8506 | char *name; | |
8507 | asection *sect; | |
8508 | size_t len; | |
8509 | ||
8510 | /* Use note name as section name. */ | |
8511 | len = note->namesz; | |
a50b1753 | 8512 | name = (char *) bfd_alloc (abfd, len); |
b15fa79e AM |
8513 | if (name == NULL) |
8514 | return FALSE; | |
8515 | memcpy (name, note->namedata, len); | |
8516 | name[len - 1] = '\0'; | |
8517 | ||
8518 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); | |
8519 | if (sect == NULL) | |
8520 | return FALSE; | |
8521 | ||
8522 | sect->size = note->descsz; | |
8523 | sect->filepos = note->descpos; | |
8524 | sect->alignment_power = 1; | |
8525 | ||
8526 | return TRUE; | |
8527 | } | |
8528 | ||
7c76fa91 MS |
8529 | /* Function: elfcore_write_note |
8530 | ||
47d9a591 | 8531 | Inputs: |
a39f3346 | 8532 | buffer to hold note, and current size of buffer |
7c76fa91 MS |
8533 | name of note |
8534 | type of note | |
8535 | data for note | |
8536 | size of data for note | |
8537 | ||
a39f3346 AM |
8538 | Writes note to end of buffer. ELF64 notes are written exactly as |
8539 | for ELF32, despite the current (as of 2006) ELF gabi specifying | |
8540 | that they ought to have 8-byte namesz and descsz field, and have | |
8541 | 8-byte alignment. Other writers, eg. Linux kernel, do the same. | |
8542 | ||
7c76fa91 | 8543 | Return: |
a39f3346 | 8544 | Pointer to realloc'd buffer, *BUFSIZ updated. */ |
7c76fa91 MS |
8545 | |
8546 | char * | |
a39f3346 | 8547 | elfcore_write_note (bfd *abfd, |
217aa764 | 8548 | char *buf, |
a39f3346 | 8549 | int *bufsiz, |
217aa764 | 8550 | const char *name, |
a39f3346 | 8551 | int type, |
217aa764 | 8552 | const void *input, |
a39f3346 | 8553 | int size) |
7c76fa91 MS |
8554 | { |
8555 | Elf_External_Note *xnp; | |
d4c88bbb | 8556 | size_t namesz; |
d4c88bbb | 8557 | size_t newspace; |
a39f3346 | 8558 | char *dest; |
7c76fa91 | 8559 | |
d4c88bbb | 8560 | namesz = 0; |
d4c88bbb | 8561 | if (name != NULL) |
a39f3346 | 8562 | namesz = strlen (name) + 1; |
d4c88bbb | 8563 | |
a39f3346 | 8564 | newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4); |
d4c88bbb | 8565 | |
a50b1753 | 8566 | buf = (char *) realloc (buf, *bufsiz + newspace); |
14b1c01e AM |
8567 | if (buf == NULL) |
8568 | return buf; | |
a39f3346 | 8569 | dest = buf + *bufsiz; |
7c76fa91 MS |
8570 | *bufsiz += newspace; |
8571 | xnp = (Elf_External_Note *) dest; | |
8572 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
8573 | H_PUT_32 (abfd, size, xnp->descsz); | |
8574 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
8575 | dest = xnp->name; |
8576 | if (name != NULL) | |
8577 | { | |
8578 | memcpy (dest, name, namesz); | |
8579 | dest += namesz; | |
a39f3346 | 8580 | while (namesz & 3) |
d4c88bbb AM |
8581 | { |
8582 | *dest++ = '\0'; | |
a39f3346 | 8583 | ++namesz; |
d4c88bbb AM |
8584 | } |
8585 | } | |
8586 | memcpy (dest, input, size); | |
a39f3346 AM |
8587 | dest += size; |
8588 | while (size & 3) | |
8589 | { | |
8590 | *dest++ = '\0'; | |
8591 | ++size; | |
8592 | } | |
8593 | return buf; | |
7c76fa91 MS |
8594 | } |
8595 | ||
8596 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
8597 | char * | |
217aa764 AM |
8598 | elfcore_write_prpsinfo (bfd *abfd, |
8599 | char *buf, | |
8600 | int *bufsiz, | |
8601 | const char *fname, | |
8602 | const char *psargs) | |
7c76fa91 | 8603 | { |
183e98be AM |
8604 | const char *note_name = "CORE"; |
8605 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8606 | ||
8607 | if (bed->elf_backend_write_core_note != NULL) | |
8608 | { | |
8609 | char *ret; | |
8610 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8611 | NT_PRPSINFO, fname, psargs); | |
8612 | if (ret != NULL) | |
8613 | return ret; | |
8614 | } | |
7c76fa91 | 8615 | |
183e98be AM |
8616 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
8617 | if (bed->s->elfclass == ELFCLASS32) | |
8618 | { | |
8619 | #if defined (HAVE_PSINFO32_T) | |
8620 | psinfo32_t data; | |
8621 | int note_type = NT_PSINFO; | |
8622 | #else | |
8623 | prpsinfo32_t data; | |
8624 | int note_type = NT_PRPSINFO; | |
8625 | #endif | |
8626 | ||
8627 | memset (&data, 0, sizeof (data)); | |
8628 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8629 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8630 | return elfcore_write_note (abfd, buf, bufsiz, | |
8631 | note_name, note_type, &data, sizeof (data)); | |
8632 | } | |
8633 | else | |
8634 | #endif | |
8635 | { | |
7c76fa91 | 8636 | #if defined (HAVE_PSINFO_T) |
183e98be AM |
8637 | psinfo_t data; |
8638 | int note_type = NT_PSINFO; | |
7c76fa91 | 8639 | #else |
183e98be AM |
8640 | prpsinfo_t data; |
8641 | int note_type = NT_PRPSINFO; | |
7c76fa91 MS |
8642 | #endif |
8643 | ||
183e98be AM |
8644 | memset (&data, 0, sizeof (data)); |
8645 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8646 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8647 | return elfcore_write_note (abfd, buf, bufsiz, | |
8648 | note_name, note_type, &data, sizeof (data)); | |
8649 | } | |
7c76fa91 MS |
8650 | } |
8651 | #endif /* PSINFO_T or PRPSINFO_T */ | |
8652 | ||
8653 | #if defined (HAVE_PRSTATUS_T) | |
8654 | char * | |
217aa764 AM |
8655 | elfcore_write_prstatus (bfd *abfd, |
8656 | char *buf, | |
8657 | int *bufsiz, | |
8658 | long pid, | |
8659 | int cursig, | |
8660 | const void *gregs) | |
7c76fa91 | 8661 | { |
183e98be AM |
8662 | const char *note_name = "CORE"; |
8663 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8664 | |
183e98be AM |
8665 | if (bed->elf_backend_write_core_note != NULL) |
8666 | { | |
8667 | char *ret; | |
8668 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8669 | NT_PRSTATUS, | |
8670 | pid, cursig, gregs); | |
8671 | if (ret != NULL) | |
8672 | return ret; | |
8673 | } | |
8674 | ||
8675 | #if defined (HAVE_PRSTATUS32_T) | |
8676 | if (bed->s->elfclass == ELFCLASS32) | |
8677 | { | |
8678 | prstatus32_t prstat; | |
8679 | ||
8680 | memset (&prstat, 0, sizeof (prstat)); | |
8681 | prstat.pr_pid = pid; | |
8682 | prstat.pr_cursig = cursig; | |
8683 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8684 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8685 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8686 | } | |
8687 | else | |
8688 | #endif | |
8689 | { | |
8690 | prstatus_t prstat; | |
8691 | ||
8692 | memset (&prstat, 0, sizeof (prstat)); | |
8693 | prstat.pr_pid = pid; | |
8694 | prstat.pr_cursig = cursig; | |
8695 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8696 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8697 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8698 | } | |
7c76fa91 MS |
8699 | } |
8700 | #endif /* HAVE_PRSTATUS_T */ | |
8701 | ||
51316059 MS |
8702 | #if defined (HAVE_LWPSTATUS_T) |
8703 | char * | |
217aa764 AM |
8704 | elfcore_write_lwpstatus (bfd *abfd, |
8705 | char *buf, | |
8706 | int *bufsiz, | |
8707 | long pid, | |
8708 | int cursig, | |
8709 | const void *gregs) | |
51316059 MS |
8710 | { |
8711 | lwpstatus_t lwpstat; | |
183e98be | 8712 | const char *note_name = "CORE"; |
51316059 MS |
8713 | |
8714 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
8715 | lwpstat.pr_lwpid = pid >> 16; | |
8716 | lwpstat.pr_cursig = cursig; | |
8717 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
8718 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
8719 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
8720 | #if !defined(gregs) | |
8721 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
8722 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
8723 | #else | |
8724 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
8725 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
8726 | #endif | |
8727 | #endif | |
47d9a591 | 8728 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8729 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
8730 | } | |
8731 | #endif /* HAVE_LWPSTATUS_T */ | |
8732 | ||
7c76fa91 MS |
8733 | #if defined (HAVE_PSTATUS_T) |
8734 | char * | |
217aa764 AM |
8735 | elfcore_write_pstatus (bfd *abfd, |
8736 | char *buf, | |
8737 | int *bufsiz, | |
8738 | long pid, | |
6c10990d NC |
8739 | int cursig ATTRIBUTE_UNUSED, |
8740 | const void *gregs ATTRIBUTE_UNUSED) | |
7c76fa91 | 8741 | { |
183e98be AM |
8742 | const char *note_name = "CORE"; |
8743 | #if defined (HAVE_PSTATUS32_T) | |
8744 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8745 | |
183e98be AM |
8746 | if (bed->s->elfclass == ELFCLASS32) |
8747 | { | |
8748 | pstatus32_t pstat; | |
8749 | ||
8750 | memset (&pstat, 0, sizeof (pstat)); | |
8751 | pstat.pr_pid = pid & 0xffff; | |
8752 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8753 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8754 | return buf; | |
8755 | } | |
8756 | else | |
8757 | #endif | |
8758 | { | |
8759 | pstatus_t pstat; | |
8760 | ||
8761 | memset (&pstat, 0, sizeof (pstat)); | |
8762 | pstat.pr_pid = pid & 0xffff; | |
8763 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8764 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8765 | return buf; | |
8766 | } | |
7c76fa91 MS |
8767 | } |
8768 | #endif /* HAVE_PSTATUS_T */ | |
8769 | ||
8770 | char * | |
217aa764 AM |
8771 | elfcore_write_prfpreg (bfd *abfd, |
8772 | char *buf, | |
8773 | int *bufsiz, | |
8774 | const void *fpregs, | |
8775 | int size) | |
7c76fa91 | 8776 | { |
183e98be | 8777 | const char *note_name = "CORE"; |
47d9a591 | 8778 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8779 | note_name, NT_FPREGSET, fpregs, size); |
8780 | } | |
8781 | ||
8782 | char * | |
217aa764 AM |
8783 | elfcore_write_prxfpreg (bfd *abfd, |
8784 | char *buf, | |
8785 | int *bufsiz, | |
8786 | const void *xfpregs, | |
8787 | int size) | |
7c76fa91 MS |
8788 | { |
8789 | char *note_name = "LINUX"; | |
47d9a591 | 8790 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8791 | note_name, NT_PRXFPREG, xfpregs, size); |
8792 | } | |
8793 | ||
4339cae0 L |
8794 | char * |
8795 | elfcore_write_xstatereg (bfd *abfd, char *buf, int *bufsiz, | |
8796 | const void *xfpregs, int size) | |
8797 | { | |
8798 | char *note_name = "LINUX"; | |
8799 | return elfcore_write_note (abfd, buf, bufsiz, | |
8800 | note_name, NT_X86_XSTATE, xfpregs, size); | |
8801 | } | |
8802 | ||
97753bd5 AM |
8803 | char * |
8804 | elfcore_write_ppc_vmx (bfd *abfd, | |
8805 | char *buf, | |
8806 | int *bufsiz, | |
8807 | const void *ppc_vmx, | |
8808 | int size) | |
8809 | { | |
8810 | char *note_name = "LINUX"; | |
8811 | return elfcore_write_note (abfd, buf, bufsiz, | |
8812 | note_name, NT_PPC_VMX, ppc_vmx, size); | |
8813 | } | |
8814 | ||
89eeb0bc LM |
8815 | char * |
8816 | elfcore_write_ppc_vsx (bfd *abfd, | |
8817 | char *buf, | |
8818 | int *bufsiz, | |
8819 | const void *ppc_vsx, | |
8820 | int size) | |
8821 | { | |
8822 | char *note_name = "LINUX"; | |
8823 | return elfcore_write_note (abfd, buf, bufsiz, | |
8824 | note_name, NT_PPC_VSX, ppc_vsx, size); | |
8825 | } | |
8826 | ||
0675e188 UW |
8827 | static char * |
8828 | elfcore_write_s390_high_gprs (bfd *abfd, | |
8829 | char *buf, | |
8830 | int *bufsiz, | |
8831 | const void *s390_high_gprs, | |
8832 | int size) | |
8833 | { | |
8834 | char *note_name = "LINUX"; | |
8835 | return elfcore_write_note (abfd, buf, bufsiz, | |
8836 | note_name, NT_S390_HIGH_GPRS, | |
8837 | s390_high_gprs, size); | |
8838 | } | |
8839 | ||
d7eeb400 MS |
8840 | char * |
8841 | elfcore_write_s390_timer (bfd *abfd, | |
8842 | char *buf, | |
8843 | int *bufsiz, | |
8844 | const void *s390_timer, | |
8845 | int size) | |
8846 | { | |
8847 | char *note_name = "LINUX"; | |
8848 | return elfcore_write_note (abfd, buf, bufsiz, | |
8849 | note_name, NT_S390_TIMER, s390_timer, size); | |
8850 | } | |
8851 | ||
8852 | char * | |
8853 | elfcore_write_s390_todcmp (bfd *abfd, | |
8854 | char *buf, | |
8855 | int *bufsiz, | |
8856 | const void *s390_todcmp, | |
8857 | int size) | |
8858 | { | |
8859 | char *note_name = "LINUX"; | |
8860 | return elfcore_write_note (abfd, buf, bufsiz, | |
8861 | note_name, NT_S390_TODCMP, s390_todcmp, size); | |
8862 | } | |
8863 | ||
8864 | char * | |
8865 | elfcore_write_s390_todpreg (bfd *abfd, | |
8866 | char *buf, | |
8867 | int *bufsiz, | |
8868 | const void *s390_todpreg, | |
8869 | int size) | |
8870 | { | |
8871 | char *note_name = "LINUX"; | |
8872 | return elfcore_write_note (abfd, buf, bufsiz, | |
8873 | note_name, NT_S390_TODPREG, s390_todpreg, size); | |
8874 | } | |
8875 | ||
8876 | char * | |
8877 | elfcore_write_s390_ctrs (bfd *abfd, | |
8878 | char *buf, | |
8879 | int *bufsiz, | |
8880 | const void *s390_ctrs, | |
8881 | int size) | |
8882 | { | |
8883 | char *note_name = "LINUX"; | |
8884 | return elfcore_write_note (abfd, buf, bufsiz, | |
8885 | note_name, NT_S390_CTRS, s390_ctrs, size); | |
8886 | } | |
8887 | ||
8888 | char * | |
8889 | elfcore_write_s390_prefix (bfd *abfd, | |
8890 | char *buf, | |
8891 | int *bufsiz, | |
8892 | const void *s390_prefix, | |
8893 | int size) | |
8894 | { | |
8895 | char *note_name = "LINUX"; | |
8896 | return elfcore_write_note (abfd, buf, bufsiz, | |
8897 | note_name, NT_S390_PREFIX, s390_prefix, size); | |
8898 | } | |
8899 | ||
bb864ac1 CES |
8900 | char * |
8901 | elfcore_write_register_note (bfd *abfd, | |
8902 | char *buf, | |
8903 | int *bufsiz, | |
8904 | const char *section, | |
8905 | const void *data, | |
8906 | int size) | |
8907 | { | |
8908 | if (strcmp (section, ".reg2") == 0) | |
8909 | return elfcore_write_prfpreg (abfd, buf, bufsiz, data, size); | |
8910 | if (strcmp (section, ".reg-xfp") == 0) | |
8911 | return elfcore_write_prxfpreg (abfd, buf, bufsiz, data, size); | |
4339cae0 L |
8912 | if (strcmp (section, ".reg-xstate") == 0) |
8913 | return elfcore_write_xstatereg (abfd, buf, bufsiz, data, size); | |
bb864ac1 CES |
8914 | if (strcmp (section, ".reg-ppc-vmx") == 0) |
8915 | return elfcore_write_ppc_vmx (abfd, buf, bufsiz, data, size); | |
89eeb0bc LM |
8916 | if (strcmp (section, ".reg-ppc-vsx") == 0) |
8917 | return elfcore_write_ppc_vsx (abfd, buf, bufsiz, data, size); | |
0675e188 UW |
8918 | if (strcmp (section, ".reg-s390-high-gprs") == 0) |
8919 | return elfcore_write_s390_high_gprs (abfd, buf, bufsiz, data, size); | |
d7eeb400 MS |
8920 | if (strcmp (section, ".reg-s390-timer") == 0) |
8921 | return elfcore_write_s390_timer (abfd, buf, bufsiz, data, size); | |
8922 | if (strcmp (section, ".reg-s390-todcmp") == 0) | |
8923 | return elfcore_write_s390_todcmp (abfd, buf, bufsiz, data, size); | |
8924 | if (strcmp (section, ".reg-s390-todpreg") == 0) | |
8925 | return elfcore_write_s390_todpreg (abfd, buf, bufsiz, data, size); | |
8926 | if (strcmp (section, ".reg-s390-ctrs") == 0) | |
8927 | return elfcore_write_s390_ctrs (abfd, buf, bufsiz, data, size); | |
8928 | if (strcmp (section, ".reg-s390-prefix") == 0) | |
8929 | return elfcore_write_s390_prefix (abfd, buf, bufsiz, data, size); | |
bb864ac1 CES |
8930 | return NULL; |
8931 | } | |
8932 | ||
b34976b6 | 8933 | static bfd_boolean |
718175fa | 8934 | elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset) |
252b5132 | 8935 | { |
c044fabd | 8936 | char *p; |
252b5132 | 8937 | |
252b5132 RH |
8938 | p = buf; |
8939 | while (p < buf + size) | |
8940 | { | |
c044fabd KH |
8941 | /* FIXME: bad alignment assumption. */ |
8942 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
8943 | Elf_Internal_Note in; |
8944 | ||
baea7ef1 AM |
8945 | if (offsetof (Elf_External_Note, name) > buf - p + size) |
8946 | return FALSE; | |
8947 | ||
dc810e39 | 8948 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 8949 | |
dc810e39 | 8950 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 | 8951 | in.namedata = xnp->name; |
baea7ef1 AM |
8952 | if (in.namesz > buf - in.namedata + size) |
8953 | return FALSE; | |
252b5132 | 8954 | |
dc810e39 | 8955 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
8956 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
8957 | in.descpos = offset + (in.descdata - buf); | |
baea7ef1 AM |
8958 | if (in.descsz != 0 |
8959 | && (in.descdata >= buf + size | |
8960 | || in.descsz > buf - in.descdata + size)) | |
8961 | return FALSE; | |
252b5132 | 8962 | |
718175fa JK |
8963 | switch (bfd_get_format (abfd)) |
8964 | { | |
8965 | default: | |
8966 | return TRUE; | |
8967 | ||
8968 | case bfd_core: | |
8969 | if (CONST_STRNEQ (in.namedata, "NetBSD-CORE")) | |
8970 | { | |
8971 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
8972 | return FALSE; | |
8973 | } | |
67cc5033 MK |
8974 | else if (CONST_STRNEQ (in.namedata, "OpenBSD")) |
8975 | { | |
8976 | if (! elfcore_grok_openbsd_note (abfd, &in)) | |
8977 | return FALSE; | |
8978 | } | |
718175fa JK |
8979 | else if (CONST_STRNEQ (in.namedata, "QNX")) |
8980 | { | |
8981 | if (! elfcore_grok_nto_note (abfd, &in)) | |
8982 | return FALSE; | |
8983 | } | |
b15fa79e AM |
8984 | else if (CONST_STRNEQ (in.namedata, "SPU/")) |
8985 | { | |
8986 | if (! elfcore_grok_spu_note (abfd, &in)) | |
8987 | return FALSE; | |
8988 | } | |
718175fa JK |
8989 | else |
8990 | { | |
8991 | if (! elfcore_grok_note (abfd, &in)) | |
8992 | return FALSE; | |
8993 | } | |
8994 | break; | |
8995 | ||
8996 | case bfd_object: | |
8997 | if (in.namesz == sizeof "GNU" && strcmp (in.namedata, "GNU") == 0) | |
8998 | { | |
8999 | if (! elfobj_grok_gnu_note (abfd, &in)) | |
9000 | return FALSE; | |
9001 | } | |
9002 | break; | |
08a40648 | 9003 | } |
252b5132 RH |
9004 | |
9005 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
9006 | } | |
9007 | ||
718175fa JK |
9008 | return TRUE; |
9009 | } | |
9010 | ||
9011 | static bfd_boolean | |
9012 | elf_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) | |
9013 | { | |
9014 | char *buf; | |
9015 | ||
9016 | if (size <= 0) | |
9017 | return TRUE; | |
9018 | ||
9019 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) | |
9020 | return FALSE; | |
9021 | ||
a50b1753 | 9022 | buf = (char *) bfd_malloc (size); |
718175fa JK |
9023 | if (buf == NULL) |
9024 | return FALSE; | |
9025 | ||
9026 | if (bfd_bread (buf, size, abfd) != size | |
9027 | || !elf_parse_notes (abfd, buf, size, offset)) | |
9028 | { | |
9029 | free (buf); | |
9030 | return FALSE; | |
9031 | } | |
9032 | ||
252b5132 | 9033 | free (buf); |
b34976b6 | 9034 | return TRUE; |
252b5132 | 9035 | } |
98d8431c JB |
9036 | \f |
9037 | /* Providing external access to the ELF program header table. */ | |
9038 | ||
9039 | /* Return an upper bound on the number of bytes required to store a | |
9040 | copy of ABFD's program header table entries. Return -1 if an error | |
9041 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 9042 | |
98d8431c | 9043 | long |
217aa764 | 9044 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
9045 | { |
9046 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
9047 | { | |
9048 | bfd_set_error (bfd_error_wrong_format); | |
9049 | return -1; | |
9050 | } | |
9051 | ||
936e320b | 9052 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
9053 | } |
9054 | ||
98d8431c JB |
9055 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
9056 | will be stored as an array of Elf_Internal_Phdr structures, as | |
9057 | defined in include/elf/internal.h. To find out how large the | |
9058 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
9059 | ||
9060 | Return the number of program header table entries read, or -1 if an | |
9061 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 9062 | |
98d8431c | 9063 | int |
217aa764 | 9064 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
9065 | { |
9066 | int num_phdrs; | |
9067 | ||
9068 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
9069 | { | |
9070 | bfd_set_error (bfd_error_wrong_format); | |
9071 | return -1; | |
9072 | } | |
9073 | ||
9074 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 9075 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
9076 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
9077 | ||
9078 | return num_phdrs; | |
9079 | } | |
ae4221d7 | 9080 | |
db6751f2 | 9081 | enum elf_reloc_type_class |
217aa764 | 9082 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
9083 | { |
9084 | return reloc_class_normal; | |
9085 | } | |
f8df10f4 | 9086 | |
47d9a591 | 9087 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
9088 | relocation against a local symbol. */ |
9089 | ||
9090 | bfd_vma | |
217aa764 AM |
9091 | _bfd_elf_rela_local_sym (bfd *abfd, |
9092 | Elf_Internal_Sym *sym, | |
8517fae7 | 9093 | asection **psec, |
217aa764 | 9094 | Elf_Internal_Rela *rel) |
f8df10f4 | 9095 | { |
8517fae7 | 9096 | asection *sec = *psec; |
f8df10f4 JJ |
9097 | bfd_vma relocation; |
9098 | ||
9099 | relocation = (sec->output_section->vma | |
9100 | + sec->output_offset | |
9101 | + sym->st_value); | |
9102 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 9103 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 9104 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 9105 | { |
f8df10f4 | 9106 | rel->r_addend = |
8517fae7 | 9107 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 9108 | elf_section_data (sec)->sec_info, |
753731ee AM |
9109 | sym->st_value + rel->r_addend); |
9110 | if (sec != *psec) | |
9111 | { | |
9112 | /* If we have changed the section, and our original section is | |
9113 | marked with SEC_EXCLUDE, it means that the original | |
9114 | SEC_MERGE section has been completely subsumed in some | |
9115 | other SEC_MERGE section. In this case, we need to leave | |
9116 | some info around for --emit-relocs. */ | |
9117 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
9118 | sec->kept_section = *psec; | |
9119 | sec = *psec; | |
9120 | } | |
8517fae7 AM |
9121 | rel->r_addend -= relocation; |
9122 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
9123 | } |
9124 | return relocation; | |
9125 | } | |
c629eae0 JJ |
9126 | |
9127 | bfd_vma | |
217aa764 AM |
9128 | _bfd_elf_rel_local_sym (bfd *abfd, |
9129 | Elf_Internal_Sym *sym, | |
9130 | asection **psec, | |
9131 | bfd_vma addend) | |
47d9a591 | 9132 | { |
c629eae0 JJ |
9133 | asection *sec = *psec; |
9134 | ||
68bfbfcc | 9135 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
9136 | return sym->st_value + addend; |
9137 | ||
9138 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 9139 | elf_section_data (sec)->sec_info, |
753731ee | 9140 | sym->st_value + addend); |
c629eae0 JJ |
9141 | } |
9142 | ||
9143 | bfd_vma | |
217aa764 | 9144 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 9145 | struct bfd_link_info *info, |
217aa764 AM |
9146 | asection *sec, |
9147 | bfd_vma offset) | |
c629eae0 | 9148 | { |
68bfbfcc | 9149 | switch (sec->sec_info_type) |
65765700 JJ |
9150 | { |
9151 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
9152 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
9153 | offset); | |
65765700 | 9154 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 9155 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
9156 | default: |
9157 | return offset; | |
9158 | } | |
c629eae0 | 9159 | } |
3333a7c3 RM |
9160 | \f |
9161 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
9162 | reconstruct an ELF file by reading the segments out of remote memory | |
9163 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
9164 | points to. If not null, *LOADBASEP is filled in with the difference | |
9165 | between the VMAs from which the segments were read, and the VMAs the | |
9166 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
9167 | ||
9168 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
9169 | remote memory at target address VMA into the local buffer at MYADDR; it | |
9170 | should return zero on success or an `errno' code on failure. TEMPL must | |
9171 | be a BFD for an ELF target with the word size and byte order found in | |
9172 | the remote memory. */ | |
9173 | ||
9174 | bfd * | |
217aa764 AM |
9175 | bfd_elf_bfd_from_remote_memory |
9176 | (bfd *templ, | |
9177 | bfd_vma ehdr_vma, | |
9178 | bfd_vma *loadbasep, | |
f075ee0c | 9179 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
9180 | { |
9181 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
9182 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
9183 | } | |
4c45e5c9 JJ |
9184 | \f |
9185 | long | |
c9727e01 AM |
9186 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
9187 | long symcount ATTRIBUTE_UNUSED, | |
9188 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 9189 | long dynsymcount, |
c9727e01 AM |
9190 | asymbol **dynsyms, |
9191 | asymbol **ret) | |
4c45e5c9 JJ |
9192 | { |
9193 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
9194 | asection *relplt; | |
9195 | asymbol *s; | |
9196 | const char *relplt_name; | |
9197 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
9198 | arelent *p; | |
9199 | long count, i, n; | |
9200 | size_t size; | |
9201 | Elf_Internal_Shdr *hdr; | |
9202 | char *names; | |
9203 | asection *plt; | |
9204 | ||
8615f3f2 AM |
9205 | *ret = NULL; |
9206 | ||
90e3cdf2 JJ |
9207 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
9208 | return 0; | |
9209 | ||
8615f3f2 AM |
9210 | if (dynsymcount <= 0) |
9211 | return 0; | |
9212 | ||
4c45e5c9 JJ |
9213 | if (!bed->plt_sym_val) |
9214 | return 0; | |
9215 | ||
9216 | relplt_name = bed->relplt_name; | |
9217 | if (relplt_name == NULL) | |
d35fd659 | 9218 | relplt_name = bed->rela_plts_and_copies_p ? ".rela.plt" : ".rel.plt"; |
4c45e5c9 JJ |
9219 | relplt = bfd_get_section_by_name (abfd, relplt_name); |
9220 | if (relplt == NULL) | |
9221 | return 0; | |
9222 | ||
9223 | hdr = &elf_section_data (relplt)->this_hdr; | |
9224 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
9225 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
9226 | return 0; | |
9227 | ||
9228 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
9229 | if (plt == NULL) | |
9230 | return 0; | |
9231 | ||
9232 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 9233 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
9234 | return -1; |
9235 | ||
eea6121a | 9236 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
9237 | size = count * sizeof (asymbol); |
9238 | p = relplt->relocation; | |
cb53bf42 | 9239 | for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel) |
041de40d AM |
9240 | { |
9241 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
9242 | if (p->addend != 0) | |
9243 | { | |
9244 | #ifdef BFD64 | |
9245 | size += sizeof ("+0x") - 1 + 8 + 8 * (bed->s->elfclass == ELFCLASS64); | |
9246 | #else | |
9247 | size += sizeof ("+0x") - 1 + 8; | |
9248 | #endif | |
9249 | } | |
9250 | } | |
4c45e5c9 | 9251 | |
a50b1753 | 9252 | s = *ret = (asymbol *) bfd_malloc (size); |
4c45e5c9 JJ |
9253 | if (s == NULL) |
9254 | return -1; | |
9255 | ||
9256 | names = (char *) (s + count); | |
9257 | p = relplt->relocation; | |
9258 | n = 0; | |
cb53bf42 | 9259 | for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel) |
4c45e5c9 JJ |
9260 | { |
9261 | size_t len; | |
9262 | bfd_vma addr; | |
9263 | ||
9264 | addr = bed->plt_sym_val (i, plt, p); | |
9265 | if (addr == (bfd_vma) -1) | |
9266 | continue; | |
9267 | ||
9268 | *s = **p->sym_ptr_ptr; | |
65a7a66f AM |
9269 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since |
9270 | we are defining a symbol, ensure one of them is set. */ | |
9271 | if ((s->flags & BSF_LOCAL) == 0) | |
9272 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 9273 | s->flags |= BSF_SYNTHETIC; |
4c45e5c9 JJ |
9274 | s->section = plt; |
9275 | s->value = addr - plt->vma; | |
9276 | s->name = names; | |
8f39ba8e | 9277 | s->udata.p = NULL; |
4c45e5c9 JJ |
9278 | len = strlen ((*p->sym_ptr_ptr)->name); |
9279 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
9280 | names += len; | |
041de40d AM |
9281 | if (p->addend != 0) |
9282 | { | |
1d770845 | 9283 | char buf[30], *a; |
91d6fa6a | 9284 | |
041de40d AM |
9285 | memcpy (names, "+0x", sizeof ("+0x") - 1); |
9286 | names += sizeof ("+0x") - 1; | |
1d770845 L |
9287 | bfd_sprintf_vma (abfd, buf, p->addend); |
9288 | for (a = buf; *a == '0'; ++a) | |
9289 | ; | |
9290 | len = strlen (a); | |
9291 | memcpy (names, a, len); | |
9292 | names += len; | |
041de40d | 9293 | } |
4c45e5c9 JJ |
9294 | memcpy (names, "@plt", sizeof ("@plt")); |
9295 | names += sizeof ("@plt"); | |
8f39ba8e | 9296 | ++s, ++n; |
4c45e5c9 JJ |
9297 | } |
9298 | ||
9299 | return n; | |
9300 | } | |
3d7f7666 | 9301 | |
3b22753a L |
9302 | /* It is only used by x86-64 so far. */ |
9303 | asection _bfd_elf_large_com_section | |
9304 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, | |
f592407e | 9305 | SEC_IS_COMMON, NULL, "LARGE_COMMON", 0); |
ecca9871 | 9306 | |
d1036acb L |
9307 | void |
9308 | _bfd_elf_set_osabi (bfd * abfd, | |
9309 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
9310 | { | |
9311 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
9312 | ||
9313 | i_ehdrp = elf_elfheader (abfd); | |
9314 | ||
9315 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
d8045f23 NC |
9316 | |
9317 | /* To make things simpler for the loader on Linux systems we set the | |
9318 | osabi field to ELFOSABI_LINUX if the binary contains symbols of | |
9319 | the STT_GNU_IFUNC type. */ | |
9320 | if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE | |
9321 | && elf_tdata (abfd)->has_ifunc_symbols) | |
9322 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX; | |
d1036acb | 9323 | } |
fcb93ecf PB |
9324 | |
9325 | ||
9326 | /* Return TRUE for ELF symbol types that represent functions. | |
9327 | This is the default version of this function, which is sufficient for | |
d8045f23 | 9328 | most targets. It returns true if TYPE is STT_FUNC or STT_GNU_IFUNC. */ |
fcb93ecf PB |
9329 | |
9330 | bfd_boolean | |
9331 | _bfd_elf_is_function_type (unsigned int type) | |
9332 | { | |
d8045f23 NC |
9333 | return (type == STT_FUNC |
9334 | || type == STT_GNU_IFUNC); | |
fcb93ecf | 9335 | } |