Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 AC |
2 | |
3 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, | |
72a80a16 AM |
4 | 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
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 | |
217aa764 | 48 | static int elf_sort_sections (const void *, const void *); |
c84fca4d | 49 | static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *); |
217aa764 AM |
50 | static bfd_boolean prep_headers (bfd *); |
51 | static bfd_boolean swap_out_syms (bfd *, struct bfd_strtab_hash **, int) ; | |
718175fa JK |
52 | static bfd_boolean elf_read_notes (bfd *, file_ptr, bfd_size_type) ; |
53 | static bfd_boolean elf_parse_notes (bfd *abfd, char *buf, size_t size, | |
54 | file_ptr offset); | |
50b2bdb7 | 55 | |
252b5132 RH |
56 | /* Swap version information in and out. The version information is |
57 | currently size independent. If that ever changes, this code will | |
58 | need to move into elfcode.h. */ | |
59 | ||
60 | /* Swap in a Verdef structure. */ | |
61 | ||
62 | void | |
217aa764 AM |
63 | _bfd_elf_swap_verdef_in (bfd *abfd, |
64 | const Elf_External_Verdef *src, | |
65 | Elf_Internal_Verdef *dst) | |
252b5132 | 66 | { |
dc810e39 AM |
67 | dst->vd_version = H_GET_16 (abfd, src->vd_version); |
68 | dst->vd_flags = H_GET_16 (abfd, src->vd_flags); | |
69 | dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx); | |
70 | dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt); | |
71 | dst->vd_hash = H_GET_32 (abfd, src->vd_hash); | |
72 | dst->vd_aux = H_GET_32 (abfd, src->vd_aux); | |
73 | dst->vd_next = H_GET_32 (abfd, src->vd_next); | |
252b5132 RH |
74 | } |
75 | ||
76 | /* Swap out a Verdef structure. */ | |
77 | ||
78 | void | |
217aa764 AM |
79 | _bfd_elf_swap_verdef_out (bfd *abfd, |
80 | const Elf_Internal_Verdef *src, | |
81 | Elf_External_Verdef *dst) | |
252b5132 | 82 | { |
dc810e39 AM |
83 | H_PUT_16 (abfd, src->vd_version, dst->vd_version); |
84 | H_PUT_16 (abfd, src->vd_flags, dst->vd_flags); | |
85 | H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx); | |
86 | H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt); | |
87 | H_PUT_32 (abfd, src->vd_hash, dst->vd_hash); | |
88 | H_PUT_32 (abfd, src->vd_aux, dst->vd_aux); | |
89 | H_PUT_32 (abfd, src->vd_next, dst->vd_next); | |
252b5132 RH |
90 | } |
91 | ||
92 | /* Swap in a Verdaux structure. */ | |
93 | ||
94 | void | |
217aa764 AM |
95 | _bfd_elf_swap_verdaux_in (bfd *abfd, |
96 | const Elf_External_Verdaux *src, | |
97 | Elf_Internal_Verdaux *dst) | |
252b5132 | 98 | { |
dc810e39 AM |
99 | dst->vda_name = H_GET_32 (abfd, src->vda_name); |
100 | dst->vda_next = H_GET_32 (abfd, src->vda_next); | |
252b5132 RH |
101 | } |
102 | ||
103 | /* Swap out a Verdaux structure. */ | |
104 | ||
105 | void | |
217aa764 AM |
106 | _bfd_elf_swap_verdaux_out (bfd *abfd, |
107 | const Elf_Internal_Verdaux *src, | |
108 | Elf_External_Verdaux *dst) | |
252b5132 | 109 | { |
dc810e39 AM |
110 | H_PUT_32 (abfd, src->vda_name, dst->vda_name); |
111 | H_PUT_32 (abfd, src->vda_next, dst->vda_next); | |
252b5132 RH |
112 | } |
113 | ||
114 | /* Swap in a Verneed structure. */ | |
115 | ||
116 | void | |
217aa764 AM |
117 | _bfd_elf_swap_verneed_in (bfd *abfd, |
118 | const Elf_External_Verneed *src, | |
119 | Elf_Internal_Verneed *dst) | |
252b5132 | 120 | { |
dc810e39 AM |
121 | dst->vn_version = H_GET_16 (abfd, src->vn_version); |
122 | dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt); | |
123 | dst->vn_file = H_GET_32 (abfd, src->vn_file); | |
124 | dst->vn_aux = H_GET_32 (abfd, src->vn_aux); | |
125 | dst->vn_next = H_GET_32 (abfd, src->vn_next); | |
252b5132 RH |
126 | } |
127 | ||
128 | /* Swap out a Verneed structure. */ | |
129 | ||
130 | void | |
217aa764 AM |
131 | _bfd_elf_swap_verneed_out (bfd *abfd, |
132 | const Elf_Internal_Verneed *src, | |
133 | Elf_External_Verneed *dst) | |
252b5132 | 134 | { |
dc810e39 AM |
135 | H_PUT_16 (abfd, src->vn_version, dst->vn_version); |
136 | H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt); | |
137 | H_PUT_32 (abfd, src->vn_file, dst->vn_file); | |
138 | H_PUT_32 (abfd, src->vn_aux, dst->vn_aux); | |
139 | H_PUT_32 (abfd, src->vn_next, dst->vn_next); | |
252b5132 RH |
140 | } |
141 | ||
142 | /* Swap in a Vernaux structure. */ | |
143 | ||
144 | void | |
217aa764 AM |
145 | _bfd_elf_swap_vernaux_in (bfd *abfd, |
146 | const Elf_External_Vernaux *src, | |
147 | Elf_Internal_Vernaux *dst) | |
252b5132 | 148 | { |
dc810e39 AM |
149 | dst->vna_hash = H_GET_32 (abfd, src->vna_hash); |
150 | dst->vna_flags = H_GET_16 (abfd, src->vna_flags); | |
151 | dst->vna_other = H_GET_16 (abfd, src->vna_other); | |
152 | dst->vna_name = H_GET_32 (abfd, src->vna_name); | |
153 | dst->vna_next = H_GET_32 (abfd, src->vna_next); | |
252b5132 RH |
154 | } |
155 | ||
156 | /* Swap out a Vernaux structure. */ | |
157 | ||
158 | void | |
217aa764 AM |
159 | _bfd_elf_swap_vernaux_out (bfd *abfd, |
160 | const Elf_Internal_Vernaux *src, | |
161 | Elf_External_Vernaux *dst) | |
252b5132 | 162 | { |
dc810e39 AM |
163 | H_PUT_32 (abfd, src->vna_hash, dst->vna_hash); |
164 | H_PUT_16 (abfd, src->vna_flags, dst->vna_flags); | |
165 | H_PUT_16 (abfd, src->vna_other, dst->vna_other); | |
166 | H_PUT_32 (abfd, src->vna_name, dst->vna_name); | |
167 | H_PUT_32 (abfd, src->vna_next, dst->vna_next); | |
252b5132 RH |
168 | } |
169 | ||
170 | /* Swap in a Versym structure. */ | |
171 | ||
172 | void | |
217aa764 AM |
173 | _bfd_elf_swap_versym_in (bfd *abfd, |
174 | const Elf_External_Versym *src, | |
175 | Elf_Internal_Versym *dst) | |
252b5132 | 176 | { |
dc810e39 | 177 | dst->vs_vers = H_GET_16 (abfd, src->vs_vers); |
252b5132 RH |
178 | } |
179 | ||
180 | /* Swap out a Versym structure. */ | |
181 | ||
182 | void | |
217aa764 AM |
183 | _bfd_elf_swap_versym_out (bfd *abfd, |
184 | const Elf_Internal_Versym *src, | |
185 | Elf_External_Versym *dst) | |
252b5132 | 186 | { |
dc810e39 | 187 | H_PUT_16 (abfd, src->vs_vers, dst->vs_vers); |
252b5132 RH |
188 | } |
189 | ||
190 | /* Standard ELF hash function. Do not change this function; you will | |
191 | cause invalid hash tables to be generated. */ | |
3a99b017 | 192 | |
252b5132 | 193 | unsigned long |
217aa764 | 194 | bfd_elf_hash (const char *namearg) |
252b5132 | 195 | { |
3a99b017 | 196 | const unsigned char *name = (const unsigned char *) namearg; |
252b5132 RH |
197 | unsigned long h = 0; |
198 | unsigned long g; | |
199 | int ch; | |
200 | ||
201 | while ((ch = *name++) != '\0') | |
202 | { | |
203 | h = (h << 4) + ch; | |
204 | if ((g = (h & 0xf0000000)) != 0) | |
205 | { | |
206 | h ^= g >> 24; | |
207 | /* The ELF ABI says `h &= ~g', but this is equivalent in | |
208 | this case and on some machines one insn instead of two. */ | |
209 | h ^= g; | |
210 | } | |
211 | } | |
32dfa85d | 212 | return h & 0xffffffff; |
252b5132 RH |
213 | } |
214 | ||
fdc90cb4 JJ |
215 | /* DT_GNU_HASH hash function. Do not change this function; you will |
216 | cause invalid hash tables to be generated. */ | |
217 | ||
218 | unsigned long | |
219 | bfd_elf_gnu_hash (const char *namearg) | |
220 | { | |
221 | const unsigned char *name = (const unsigned char *) namearg; | |
222 | unsigned long h = 5381; | |
223 | unsigned char ch; | |
224 | ||
225 | while ((ch = *name++) != '\0') | |
226 | h = (h << 5) + h + ch; | |
227 | return h & 0xffffffff; | |
228 | } | |
229 | ||
0c8d6e5c AM |
230 | /* Create a tdata field OBJECT_SIZE bytes in length, zeroed out and with |
231 | the object_id field of an elf_obj_tdata field set to OBJECT_ID. */ | |
b34976b6 | 232 | bfd_boolean |
0c8d6e5c | 233 | bfd_elf_allocate_object (bfd *abfd, |
0ffa91dd NC |
234 | size_t object_size, |
235 | enum elf_object_id object_id) | |
252b5132 | 236 | { |
0ffa91dd NC |
237 | BFD_ASSERT (object_size >= sizeof (struct elf_obj_tdata)); |
238 | abfd->tdata.any = bfd_zalloc (abfd, object_size); | |
239 | if (abfd->tdata.any == NULL) | |
240 | return FALSE; | |
252b5132 | 241 | |
0ffa91dd NC |
242 | elf_object_id (abfd) = object_id; |
243 | elf_program_header_size (abfd) = (bfd_size_type) -1; | |
b34976b6 | 244 | return TRUE; |
252b5132 RH |
245 | } |
246 | ||
0ffa91dd NC |
247 | |
248 | bfd_boolean | |
249 | bfd_elf_make_generic_object (bfd *abfd) | |
250 | { | |
251 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_obj_tdata), | |
252 | GENERIC_ELF_TDATA); | |
253 | } | |
254 | ||
b34976b6 | 255 | bfd_boolean |
217aa764 | 256 | bfd_elf_mkcorefile (bfd *abfd) |
252b5132 | 257 | { |
c044fabd | 258 | /* I think this can be done just like an object file. */ |
0ffa91dd | 259 | return bfd_elf_make_generic_object (abfd); |
252b5132 RH |
260 | } |
261 | ||
72a80a16 | 262 | static char * |
217aa764 | 263 | bfd_elf_get_str_section (bfd *abfd, unsigned int shindex) |
252b5132 RH |
264 | { |
265 | Elf_Internal_Shdr **i_shdrp; | |
f075ee0c | 266 | bfd_byte *shstrtab = NULL; |
dc810e39 AM |
267 | file_ptr offset; |
268 | bfd_size_type shstrtabsize; | |
252b5132 RH |
269 | |
270 | i_shdrp = elf_elfsections (abfd); | |
74f2e02b AM |
271 | if (i_shdrp == 0 |
272 | || shindex >= elf_numsections (abfd) | |
273 | || i_shdrp[shindex] == 0) | |
f075ee0c | 274 | return NULL; |
252b5132 | 275 | |
f075ee0c | 276 | shstrtab = i_shdrp[shindex]->contents; |
252b5132 RH |
277 | if (shstrtab == NULL) |
278 | { | |
c044fabd | 279 | /* No cached one, attempt to read, and cache what we read. */ |
252b5132 RH |
280 | offset = i_shdrp[shindex]->sh_offset; |
281 | shstrtabsize = i_shdrp[shindex]->sh_size; | |
c6c60d09 JJ |
282 | |
283 | /* Allocate and clear an extra byte at the end, to prevent crashes | |
284 | in case the string table is not terminated. */ | |
3471d59d | 285 | if (shstrtabsize + 1 <= 1 |
c6c60d09 JJ |
286 | || (shstrtab = bfd_alloc (abfd, shstrtabsize + 1)) == NULL |
287 | || bfd_seek (abfd, offset, SEEK_SET) != 0) | |
288 | shstrtab = NULL; | |
289 | else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize) | |
290 | { | |
291 | if (bfd_get_error () != bfd_error_system_call) | |
292 | bfd_set_error (bfd_error_file_truncated); | |
293 | shstrtab = NULL; | |
3471d59d CC |
294 | /* Once we've failed to read it, make sure we don't keep |
295 | trying. Otherwise, we'll keep allocating space for | |
296 | the string table over and over. */ | |
297 | i_shdrp[shindex]->sh_size = 0; | |
c6c60d09 JJ |
298 | } |
299 | else | |
300 | shstrtab[shstrtabsize] = '\0'; | |
217aa764 | 301 | i_shdrp[shindex]->contents = shstrtab; |
252b5132 | 302 | } |
f075ee0c | 303 | return (char *) shstrtab; |
252b5132 RH |
304 | } |
305 | ||
306 | char * | |
217aa764 AM |
307 | bfd_elf_string_from_elf_section (bfd *abfd, |
308 | unsigned int shindex, | |
309 | unsigned int strindex) | |
252b5132 RH |
310 | { |
311 | Elf_Internal_Shdr *hdr; | |
312 | ||
313 | if (strindex == 0) | |
314 | return ""; | |
315 | ||
74f2e02b AM |
316 | if (elf_elfsections (abfd) == NULL || shindex >= elf_numsections (abfd)) |
317 | return NULL; | |
318 | ||
252b5132 RH |
319 | hdr = elf_elfsections (abfd)[shindex]; |
320 | ||
321 | if (hdr->contents == NULL | |
322 | && bfd_elf_get_str_section (abfd, shindex) == NULL) | |
323 | return NULL; | |
324 | ||
325 | if (strindex >= hdr->sh_size) | |
326 | { | |
1b3a8575 | 327 | unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx; |
252b5132 | 328 | (*_bfd_error_handler) |
d003868e AM |
329 | (_("%B: invalid string offset %u >= %lu for section `%s'"), |
330 | abfd, strindex, (unsigned long) hdr->sh_size, | |
1b3a8575 | 331 | (shindex == shstrndx && strindex == hdr->sh_name |
252b5132 | 332 | ? ".shstrtab" |
1b3a8575 | 333 | : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name))); |
45b222d6 | 334 | return NULL; |
252b5132 RH |
335 | } |
336 | ||
337 | return ((char *) hdr->contents) + strindex; | |
338 | } | |
339 | ||
6cdc0ccc AM |
340 | /* Read and convert symbols to internal format. |
341 | SYMCOUNT specifies the number of symbols to read, starting from | |
342 | symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF | |
343 | are non-NULL, they are used to store the internal symbols, external | |
b7c368d0 NC |
344 | symbols, and symbol section index extensions, respectively. |
345 | Returns a pointer to the internal symbol buffer (malloced if necessary) | |
346 | or NULL if there were no symbols or some kind of problem. */ | |
6cdc0ccc AM |
347 | |
348 | Elf_Internal_Sym * | |
217aa764 AM |
349 | bfd_elf_get_elf_syms (bfd *ibfd, |
350 | Elf_Internal_Shdr *symtab_hdr, | |
351 | size_t symcount, | |
352 | size_t symoffset, | |
353 | Elf_Internal_Sym *intsym_buf, | |
354 | void *extsym_buf, | |
355 | Elf_External_Sym_Shndx *extshndx_buf) | |
6cdc0ccc AM |
356 | { |
357 | Elf_Internal_Shdr *shndx_hdr; | |
217aa764 | 358 | void *alloc_ext; |
df622259 | 359 | const bfd_byte *esym; |
6cdc0ccc AM |
360 | Elf_External_Sym_Shndx *alloc_extshndx; |
361 | Elf_External_Sym_Shndx *shndx; | |
4dd07732 | 362 | Elf_Internal_Sym *alloc_intsym; |
6cdc0ccc AM |
363 | Elf_Internal_Sym *isym; |
364 | Elf_Internal_Sym *isymend; | |
9c5bfbb7 | 365 | const struct elf_backend_data *bed; |
6cdc0ccc AM |
366 | size_t extsym_size; |
367 | bfd_size_type amt; | |
368 | file_ptr pos; | |
369 | ||
e44a2c9c AM |
370 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
371 | abort (); | |
372 | ||
6cdc0ccc AM |
373 | if (symcount == 0) |
374 | return intsym_buf; | |
375 | ||
376 | /* Normal syms might have section extension entries. */ | |
377 | shndx_hdr = NULL; | |
378 | if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr) | |
379 | shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr; | |
380 | ||
381 | /* Read the symbols. */ | |
382 | alloc_ext = NULL; | |
383 | alloc_extshndx = NULL; | |
4dd07732 | 384 | alloc_intsym = NULL; |
6cdc0ccc AM |
385 | bed = get_elf_backend_data (ibfd); |
386 | extsym_size = bed->s->sizeof_sym; | |
387 | amt = symcount * extsym_size; | |
388 | pos = symtab_hdr->sh_offset + symoffset * extsym_size; | |
389 | if (extsym_buf == NULL) | |
390 | { | |
d0fb9a8d | 391 | alloc_ext = bfd_malloc2 (symcount, extsym_size); |
6cdc0ccc AM |
392 | extsym_buf = alloc_ext; |
393 | } | |
394 | if (extsym_buf == NULL | |
395 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
396 | || bfd_bread (extsym_buf, amt, ibfd) != amt) | |
397 | { | |
398 | intsym_buf = NULL; | |
399 | goto out; | |
400 | } | |
401 | ||
402 | if (shndx_hdr == NULL || shndx_hdr->sh_size == 0) | |
403 | extshndx_buf = NULL; | |
404 | else | |
405 | { | |
406 | amt = symcount * sizeof (Elf_External_Sym_Shndx); | |
407 | pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx); | |
408 | if (extshndx_buf == NULL) | |
409 | { | |
d0fb9a8d JJ |
410 | alloc_extshndx = bfd_malloc2 (symcount, |
411 | sizeof (Elf_External_Sym_Shndx)); | |
6cdc0ccc AM |
412 | extshndx_buf = alloc_extshndx; |
413 | } | |
414 | if (extshndx_buf == NULL | |
415 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
416 | || bfd_bread (extshndx_buf, amt, ibfd) != amt) | |
417 | { | |
418 | intsym_buf = NULL; | |
419 | goto out; | |
420 | } | |
421 | } | |
422 | ||
423 | if (intsym_buf == NULL) | |
424 | { | |
4dd07732 AM |
425 | alloc_intsym = bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym)); |
426 | intsym_buf = alloc_intsym; | |
6cdc0ccc AM |
427 | if (intsym_buf == NULL) |
428 | goto out; | |
429 | } | |
430 | ||
431 | /* Convert the symbols to internal form. */ | |
432 | isymend = intsym_buf + symcount; | |
433 | for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf; | |
434 | isym < isymend; | |
435 | esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL) | |
8384fb8f AM |
436 | if (!(*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym)) |
437 | { | |
438 | symoffset += (esym - (bfd_byte *) extsym_buf) / extsym_size; | |
439 | (*_bfd_error_handler) (_("%B symbol number %lu references " | |
440 | "nonexistent SHT_SYMTAB_SHNDX section"), | |
441 | ibfd, (unsigned long) symoffset); | |
4dd07732 AM |
442 | if (alloc_intsym != NULL) |
443 | free (alloc_intsym); | |
8384fb8f AM |
444 | intsym_buf = NULL; |
445 | goto out; | |
446 | } | |
6cdc0ccc AM |
447 | |
448 | out: | |
449 | if (alloc_ext != NULL) | |
450 | free (alloc_ext); | |
451 | if (alloc_extshndx != NULL) | |
452 | free (alloc_extshndx); | |
453 | ||
454 | return intsym_buf; | |
455 | } | |
456 | ||
5cab59f6 AM |
457 | /* Look up a symbol name. */ |
458 | const char * | |
be8dd2ca AM |
459 | bfd_elf_sym_name (bfd *abfd, |
460 | Elf_Internal_Shdr *symtab_hdr, | |
26c61ae5 L |
461 | Elf_Internal_Sym *isym, |
462 | asection *sym_sec) | |
5cab59f6 | 463 | { |
26c61ae5 | 464 | const char *name; |
5cab59f6 | 465 | unsigned int iname = isym->st_name; |
be8dd2ca | 466 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 467 | |
138f35cc JJ |
468 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
469 | /* Check for a bogus st_shndx to avoid crashing. */ | |
4fbb74a6 | 470 | && isym->st_shndx < elf_numsections (abfd)) |
5cab59f6 AM |
471 | { |
472 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
473 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
474 | } | |
475 | ||
26c61ae5 L |
476 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
477 | if (name == NULL) | |
478 | name = "(null)"; | |
479 | else if (sym_sec && *name == '\0') | |
480 | name = bfd_section_name (abfd, sym_sec); | |
481 | ||
482 | return name; | |
5cab59f6 AM |
483 | } |
484 | ||
dbb410c3 AM |
485 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
486 | sections. The first element is the flags, the rest are section | |
487 | pointers. */ | |
488 | ||
489 | typedef union elf_internal_group { | |
490 | Elf_Internal_Shdr *shdr; | |
491 | unsigned int flags; | |
492 | } Elf_Internal_Group; | |
493 | ||
b885599b AM |
494 | /* Return the name of the group signature symbol. Why isn't the |
495 | signature just a string? */ | |
496 | ||
497 | static const char * | |
217aa764 | 498 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 499 | { |
9dce4196 | 500 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
501 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
502 | Elf_External_Sym_Shndx eshndx; | |
503 | Elf_Internal_Sym isym; | |
b885599b | 504 | |
13792e9d L |
505 | /* First we need to ensure the symbol table is available. Make sure |
506 | that it is a symbol table section. */ | |
4fbb74a6 AM |
507 | if (ghdr->sh_link >= elf_numsections (abfd)) |
508 | return NULL; | |
13792e9d L |
509 | hdr = elf_elfsections (abfd) [ghdr->sh_link]; |
510 | if (hdr->sh_type != SHT_SYMTAB | |
511 | || ! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
b885599b AM |
512 | return NULL; |
513 | ||
9dce4196 AM |
514 | /* Go read the symbol. */ |
515 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
516 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
517 | &isym, esym, &eshndx) == NULL) | |
b885599b | 518 | return NULL; |
9dce4196 | 519 | |
26c61ae5 | 520 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
521 | } |
522 | ||
dbb410c3 AM |
523 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
524 | ||
b34976b6 | 525 | static bfd_boolean |
217aa764 | 526 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
527 | { |
528 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
529 | ||
530 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
531 | is set to -1 if there are no SHT_GROUP sections. */ | |
532 | if (num_group == 0) | |
533 | { | |
534 | unsigned int i, shnum; | |
535 | ||
536 | /* First count the number of groups. If we have a SHT_GROUP | |
537 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 538 | shnum = elf_numsections (abfd); |
dbb410c3 | 539 | num_group = 0; |
08a40648 | 540 | |
1783205a NC |
541 | #define IS_VALID_GROUP_SECTION_HEADER(shdr) \ |
542 | ( (shdr)->sh_type == SHT_GROUP \ | |
543 | && (shdr)->sh_size >= (2 * GRP_ENTRY_SIZE) \ | |
544 | && (shdr)->sh_entsize == GRP_ENTRY_SIZE \ | |
545 | && ((shdr)->sh_size % GRP_ENTRY_SIZE) == 0) | |
08a40648 | 546 | |
dbb410c3 AM |
547 | for (i = 0; i < shnum; i++) |
548 | { | |
549 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a NC |
550 | |
551 | if (IS_VALID_GROUP_SECTION_HEADER (shdr)) | |
dbb410c3 AM |
552 | num_group += 1; |
553 | } | |
554 | ||
555 | if (num_group == 0) | |
20dbb49d L |
556 | { |
557 | num_group = (unsigned) -1; | |
558 | elf_tdata (abfd)->num_group = num_group; | |
559 | } | |
560 | else | |
dbb410c3 AM |
561 | { |
562 | /* We keep a list of elf section headers for group sections, | |
563 | so we can find them quickly. */ | |
20dbb49d | 564 | bfd_size_type amt; |
d0fb9a8d | 565 | |
20dbb49d | 566 | elf_tdata (abfd)->num_group = num_group; |
d0fb9a8d JJ |
567 | elf_tdata (abfd)->group_sect_ptr |
568 | = bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *)); | |
dbb410c3 | 569 | if (elf_tdata (abfd)->group_sect_ptr == NULL) |
b34976b6 | 570 | return FALSE; |
dbb410c3 AM |
571 | |
572 | num_group = 0; | |
573 | for (i = 0; i < shnum; i++) | |
574 | { | |
575 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a NC |
576 | |
577 | if (IS_VALID_GROUP_SECTION_HEADER (shdr)) | |
dbb410c3 | 578 | { |
973ffd63 | 579 | unsigned char *src; |
dbb410c3 AM |
580 | Elf_Internal_Group *dest; |
581 | ||
582 | /* Add to list of sections. */ | |
583 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
584 | num_group += 1; | |
585 | ||
586 | /* Read the raw contents. */ | |
587 | BFD_ASSERT (sizeof (*dest) >= 4); | |
588 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
d0fb9a8d JJ |
589 | shdr->contents = bfd_alloc2 (abfd, shdr->sh_size, |
590 | sizeof (*dest) / 4); | |
1783205a NC |
591 | /* PR binutils/4110: Handle corrupt group headers. */ |
592 | if (shdr->contents == NULL) | |
593 | { | |
594 | _bfd_error_handler | |
595 | (_("%B: Corrupt size field in group section header: 0x%lx"), abfd, shdr->sh_size); | |
596 | bfd_set_error (bfd_error_bad_value); | |
597 | return FALSE; | |
598 | } | |
599 | ||
600 | memset (shdr->contents, 0, amt); | |
601 | ||
602 | if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
dbb410c3 AM |
603 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) |
604 | != shdr->sh_size)) | |
b34976b6 | 605 | return FALSE; |
dbb410c3 AM |
606 | |
607 | /* Translate raw contents, a flag word followed by an | |
608 | array of elf section indices all in target byte order, | |
609 | to the flag word followed by an array of elf section | |
610 | pointers. */ | |
611 | src = shdr->contents + shdr->sh_size; | |
612 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
613 | while (1) | |
614 | { | |
615 | unsigned int idx; | |
616 | ||
617 | src -= 4; | |
618 | --dest; | |
619 | idx = H_GET_32 (abfd, src); | |
620 | if (src == shdr->contents) | |
621 | { | |
622 | dest->flags = idx; | |
b885599b AM |
623 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
624 | shdr->bfd_section->flags | |
625 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
626 | break; |
627 | } | |
628 | if (idx >= shnum) | |
629 | { | |
630 | ((*_bfd_error_handler) | |
d003868e | 631 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
632 | idx = 0; |
633 | } | |
634 | dest->shdr = elf_elfsections (abfd)[idx]; | |
635 | } | |
636 | } | |
637 | } | |
638 | } | |
639 | } | |
640 | ||
641 | if (num_group != (unsigned) -1) | |
642 | { | |
643 | unsigned int i; | |
644 | ||
645 | for (i = 0; i < num_group; i++) | |
646 | { | |
647 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
648 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
649 | unsigned int n_elt = shdr->sh_size / 4; | |
650 | ||
651 | /* Look through this group's sections to see if current | |
652 | section is a member. */ | |
653 | while (--n_elt != 0) | |
654 | if ((++idx)->shdr == hdr) | |
655 | { | |
e0e8c97f | 656 | asection *s = NULL; |
dbb410c3 AM |
657 | |
658 | /* We are a member of this group. Go looking through | |
659 | other members to see if any others are linked via | |
660 | next_in_group. */ | |
661 | idx = (Elf_Internal_Group *) shdr->contents; | |
662 | n_elt = shdr->sh_size / 4; | |
663 | while (--n_elt != 0) | |
664 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 665 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
666 | break; |
667 | if (n_elt != 0) | |
668 | { | |
dbb410c3 AM |
669 | /* Snarf the group name from other member, and |
670 | insert current section in circular list. */ | |
945906ff AM |
671 | elf_group_name (newsect) = elf_group_name (s); |
672 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
673 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
674 | } |
675 | else | |
676 | { | |
dbb410c3 AM |
677 | const char *gname; |
678 | ||
b885599b AM |
679 | gname = group_signature (abfd, shdr); |
680 | if (gname == NULL) | |
b34976b6 | 681 | return FALSE; |
945906ff | 682 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
683 | |
684 | /* Start a circular list with one element. */ | |
945906ff | 685 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 686 | } |
b885599b | 687 | |
9dce4196 AM |
688 | /* If the group section has been created, point to the |
689 | new member. */ | |
dbb410c3 | 690 | if (shdr->bfd_section != NULL) |
945906ff | 691 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 692 | |
dbb410c3 AM |
693 | i = num_group - 1; |
694 | break; | |
695 | } | |
696 | } | |
697 | } | |
698 | ||
945906ff | 699 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 700 | { |
d003868e AM |
701 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
702 | abfd, newsect); | |
dbb410c3 | 703 | } |
b34976b6 | 704 | return TRUE; |
dbb410c3 AM |
705 | } |
706 | ||
3d7f7666 | 707 | bfd_boolean |
dd863624 | 708 | _bfd_elf_setup_sections (bfd *abfd) |
3d7f7666 L |
709 | { |
710 | unsigned int i; | |
711 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
712 | bfd_boolean result = TRUE; | |
dd863624 L |
713 | asection *s; |
714 | ||
715 | /* Process SHF_LINK_ORDER. */ | |
716 | for (s = abfd->sections; s != NULL; s = s->next) | |
717 | { | |
718 | Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr; | |
719 | if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0) | |
720 | { | |
721 | unsigned int elfsec = this_hdr->sh_link; | |
722 | /* FIXME: The old Intel compiler and old strip/objcopy may | |
723 | not set the sh_link or sh_info fields. Hence we could | |
724 | get the situation where elfsec is 0. */ | |
725 | if (elfsec == 0) | |
726 | { | |
4fbb74a6 | 727 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dd863624 L |
728 | if (bed->link_order_error_handler) |
729 | bed->link_order_error_handler | |
730 | (_("%B: warning: sh_link not set for section `%A'"), | |
731 | abfd, s); | |
732 | } | |
733 | else | |
734 | { | |
4fbb74a6 | 735 | asection *link = NULL; |
25bbc984 | 736 | |
4fbb74a6 AM |
737 | if (elfsec < elf_numsections (abfd)) |
738 | { | |
739 | this_hdr = elf_elfsections (abfd)[elfsec]; | |
740 | link = this_hdr->bfd_section; | |
741 | } | |
25bbc984 L |
742 | |
743 | /* PR 1991, 2008: | |
744 | Some strip/objcopy may leave an incorrect value in | |
745 | sh_link. We don't want to proceed. */ | |
25bbc984 L |
746 | if (link == NULL) |
747 | { | |
748 | (*_bfd_error_handler) | |
749 | (_("%B: sh_link [%d] in section `%A' is incorrect"), | |
750 | s->owner, s, elfsec); | |
751 | result = FALSE; | |
752 | } | |
753 | ||
754 | elf_linked_to_section (s) = link; | |
dd863624 L |
755 | } |
756 | } | |
757 | } | |
3d7f7666 | 758 | |
dd863624 | 759 | /* Process section groups. */ |
3d7f7666 L |
760 | if (num_group == (unsigned) -1) |
761 | return result; | |
762 | ||
763 | for (i = 0; i < num_group; i++) | |
764 | { | |
765 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
766 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
767 | unsigned int n_elt = shdr->sh_size / 4; | |
768 | ||
769 | while (--n_elt != 0) | |
770 | if ((++idx)->shdr->bfd_section) | |
771 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
772 | else if (idx->shdr->sh_type == SHT_RELA | |
773 | || idx->shdr->sh_type == SHT_REL) | |
774 | /* We won't include relocation sections in section groups in | |
775 | output object files. We adjust the group section size here | |
776 | so that relocatable link will work correctly when | |
777 | relocation sections are in section group in input object | |
778 | files. */ | |
779 | shdr->bfd_section->size -= 4; | |
780 | else | |
781 | { | |
782 | /* There are some unknown sections in the group. */ | |
783 | (*_bfd_error_handler) | |
d003868e AM |
784 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
785 | abfd, | |
3d7f7666 | 786 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
787 | bfd_elf_string_from_elf_section (abfd, |
788 | (elf_elfheader (abfd) | |
789 | ->e_shstrndx), | |
790 | idx->shdr->sh_name), | |
3d7f7666 L |
791 | shdr->bfd_section->name); |
792 | result = FALSE; | |
793 | } | |
794 | } | |
795 | return result; | |
796 | } | |
797 | ||
72adc230 AM |
798 | bfd_boolean |
799 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
800 | { | |
801 | return elf_next_in_group (sec) != NULL; | |
802 | } | |
803 | ||
252b5132 RH |
804 | /* Make a BFD section from an ELF section. We store a pointer to the |
805 | BFD section in the bfd_section field of the header. */ | |
806 | ||
b34976b6 | 807 | bfd_boolean |
217aa764 AM |
808 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
809 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
810 | const char *name, |
811 | int shindex) | |
252b5132 RH |
812 | { |
813 | asection *newsect; | |
814 | flagword flags; | |
9c5bfbb7 | 815 | const struct elf_backend_data *bed; |
252b5132 RH |
816 | |
817 | if (hdr->bfd_section != NULL) | |
818 | { | |
819 | BFD_ASSERT (strcmp (name, | |
820 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 821 | return TRUE; |
252b5132 RH |
822 | } |
823 | ||
824 | newsect = bfd_make_section_anyway (abfd, name); | |
825 | if (newsect == NULL) | |
b34976b6 | 826 | return FALSE; |
252b5132 | 827 | |
1829f4b2 AM |
828 | hdr->bfd_section = newsect; |
829 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 830 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 831 | |
2f89ff8d L |
832 | /* Always use the real type/flags. */ |
833 | elf_section_type (newsect) = hdr->sh_type; | |
834 | elf_section_flags (newsect) = hdr->sh_flags; | |
835 | ||
252b5132 RH |
836 | newsect->filepos = hdr->sh_offset; |
837 | ||
838 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
839 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
840 | || ! bfd_set_section_alignment (abfd, newsect, | |
72de5009 | 841 | bfd_log2 (hdr->sh_addralign))) |
b34976b6 | 842 | return FALSE; |
252b5132 RH |
843 | |
844 | flags = SEC_NO_FLAGS; | |
845 | if (hdr->sh_type != SHT_NOBITS) | |
846 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 847 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 848 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
849 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
850 | { | |
851 | flags |= SEC_ALLOC; | |
852 | if (hdr->sh_type != SHT_NOBITS) | |
853 | flags |= SEC_LOAD; | |
854 | } | |
855 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
856 | flags |= SEC_READONLY; | |
857 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
858 | flags |= SEC_CODE; | |
859 | else if ((flags & SEC_LOAD) != 0) | |
860 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
861 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
862 | { | |
863 | flags |= SEC_MERGE; | |
864 | newsect->entsize = hdr->sh_entsize; | |
865 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
866 | flags |= SEC_STRINGS; | |
867 | } | |
dbb410c3 AM |
868 | if (hdr->sh_flags & SHF_GROUP) |
869 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 870 | return FALSE; |
13ae64f3 JJ |
871 | if ((hdr->sh_flags & SHF_TLS) != 0) |
872 | flags |= SEC_THREAD_LOCAL; | |
252b5132 | 873 | |
3d2b39cf | 874 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 875 | { |
3d2b39cf L |
876 | /* The debugging sections appear to be recognized only by name, |
877 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
878 | static const struct | |
879 | { | |
880 | const char *name; | |
881 | int len; | |
882 | } debug_sections [] = | |
883 | { | |
0112cd26 | 884 | { STRING_COMMA_LEN ("debug") }, /* 'd' */ |
3d2b39cf L |
885 | { NULL, 0 }, /* 'e' */ |
886 | { NULL, 0 }, /* 'f' */ | |
0112cd26 | 887 | { STRING_COMMA_LEN ("gnu.linkonce.wi.") }, /* 'g' */ |
3d2b39cf L |
888 | { NULL, 0 }, /* 'h' */ |
889 | { NULL, 0 }, /* 'i' */ | |
890 | { NULL, 0 }, /* 'j' */ | |
891 | { NULL, 0 }, /* 'k' */ | |
0112cd26 | 892 | { STRING_COMMA_LEN ("line") }, /* 'l' */ |
3d2b39cf L |
893 | { NULL, 0 }, /* 'm' */ |
894 | { NULL, 0 }, /* 'n' */ | |
895 | { NULL, 0 }, /* 'o' */ | |
896 | { NULL, 0 }, /* 'p' */ | |
897 | { NULL, 0 }, /* 'q' */ | |
898 | { NULL, 0 }, /* 'r' */ | |
1b315056 CS |
899 | { STRING_COMMA_LEN ("stab") }, /* 's' */ |
900 | { NULL, 0 }, /* 't' */ | |
901 | { NULL, 0 }, /* 'u' */ | |
902 | { NULL, 0 }, /* 'v' */ | |
903 | { NULL, 0 }, /* 'w' */ | |
904 | { NULL, 0 }, /* 'x' */ | |
905 | { NULL, 0 }, /* 'y' */ | |
906 | { STRING_COMMA_LEN ("zdebug") } /* 'z' */ | |
3d2b39cf | 907 | }; |
08a40648 | 908 | |
3d2b39cf L |
909 | if (name [0] == '.') |
910 | { | |
911 | int i = name [1] - 'd'; | |
912 | if (i >= 0 | |
913 | && i < (int) ARRAY_SIZE (debug_sections) | |
914 | && debug_sections [i].name != NULL | |
915 | && strncmp (&name [1], debug_sections [i].name, | |
916 | debug_sections [i].len) == 0) | |
917 | flags |= SEC_DEBUGGING; | |
918 | } | |
919 | } | |
252b5132 RH |
920 | |
921 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
922 | only link a single copy of the section. This is used to support | |
923 | g++. g++ will emit each template expansion in its own section. | |
924 | The symbols will be defined as weak, so that multiple definitions | |
925 | are permitted. The GNU linker extension is to actually discard | |
926 | all but one of the sections. */ | |
0112cd26 | 927 | if (CONST_STRNEQ (name, ".gnu.linkonce") |
b885599b | 928 | && elf_next_in_group (newsect) == NULL) |
252b5132 RH |
929 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
930 | ||
fa152c49 JW |
931 | bed = get_elf_backend_data (abfd); |
932 | if (bed->elf_backend_section_flags) | |
933 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 934 | return FALSE; |
fa152c49 | 935 | |
252b5132 | 936 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 937 | return FALSE; |
252b5132 | 938 | |
718175fa JK |
939 | /* We do not parse the PT_NOTE segments as we are interested even in the |
940 | separate debug info files which may have the segments offsets corrupted. | |
941 | PT_NOTEs from the core files are currently not parsed using BFD. */ | |
942 | if (hdr->sh_type == SHT_NOTE) | |
943 | { | |
baea7ef1 | 944 | bfd_byte *contents; |
718175fa | 945 | |
baea7ef1 | 946 | if (!bfd_malloc_and_get_section (abfd, newsect, &contents)) |
718175fa JK |
947 | return FALSE; |
948 | ||
baea7ef1 | 949 | elf_parse_notes (abfd, (char *) contents, hdr->sh_size, -1); |
718175fa JK |
950 | free (contents); |
951 | } | |
952 | ||
252b5132 RH |
953 | if ((flags & SEC_ALLOC) != 0) |
954 | { | |
955 | Elf_Internal_Phdr *phdr; | |
6ffd7900 AM |
956 | unsigned int i, nload; |
957 | ||
958 | /* Some ELF linkers produce binaries with all the program header | |
959 | p_paddr fields zero. If we have such a binary with more than | |
960 | one PT_LOAD header, then leave the section lma equal to vma | |
961 | so that we don't create sections with overlapping lma. */ | |
962 | phdr = elf_tdata (abfd)->phdr; | |
963 | for (nload = 0, i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
964 | if (phdr->p_paddr != 0) | |
965 | break; | |
966 | else if (phdr->p_type == PT_LOAD && phdr->p_memsz != 0) | |
967 | ++nload; | |
968 | if (i >= elf_elfheader (abfd)->e_phnum && nload > 1) | |
969 | return TRUE; | |
252b5132 | 970 | |
252b5132 RH |
971 | phdr = elf_tdata (abfd)->phdr; |
972 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
973 | { | |
88967714 | 974 | if (phdr->p_type == PT_LOAD |
e7e75368 | 975 | && ELF_IS_SECTION_IN_SEGMENT (hdr, phdr)) |
252b5132 | 976 | { |
88967714 AM |
977 | if ((flags & SEC_LOAD) == 0) |
978 | newsect->lma = (phdr->p_paddr | |
979 | + hdr->sh_addr - phdr->p_vaddr); | |
980 | else | |
981 | /* We used to use the same adjustment for SEC_LOAD | |
982 | sections, but that doesn't work if the segment | |
983 | is packed with code from multiple VMAs. | |
984 | Instead we calculate the section LMA based on | |
985 | the segment LMA. It is assumed that the | |
986 | segment will contain sections with contiguous | |
987 | LMAs, even if the VMAs are not. */ | |
988 | newsect->lma = (phdr->p_paddr | |
989 | + hdr->sh_offset - phdr->p_offset); | |
990 | ||
991 | /* With contiguous segments, we can't tell from file | |
992 | offsets whether a section with zero size should | |
993 | be placed at the end of one segment or the | |
994 | beginning of the next. Decide based on vaddr. */ | |
995 | if (hdr->sh_addr >= phdr->p_vaddr | |
996 | && (hdr->sh_addr + hdr->sh_size | |
997 | <= phdr->p_vaddr + phdr->p_memsz)) | |
998 | break; | |
252b5132 RH |
999 | } |
1000 | } | |
1001 | } | |
1002 | ||
b34976b6 | 1003 | return TRUE; |
252b5132 RH |
1004 | } |
1005 | ||
252b5132 RH |
1006 | const char *const bfd_elf_section_type_names[] = { |
1007 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
1008 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
1009 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
1010 | }; | |
1011 | ||
1049f94e | 1012 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
1013 | output, and the reloc is against an external symbol, and nothing |
1014 | has given us any additional addend, the resulting reloc will also | |
1015 | be against the same symbol. In such a case, we don't want to | |
1016 | change anything about the way the reloc is handled, since it will | |
1017 | all be done at final link time. Rather than put special case code | |
1018 | into bfd_perform_relocation, all the reloc types use this howto | |
1019 | function. It just short circuits the reloc if producing | |
1049f94e | 1020 | relocatable output against an external symbol. */ |
252b5132 | 1021 | |
252b5132 | 1022 | bfd_reloc_status_type |
217aa764 AM |
1023 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
1024 | arelent *reloc_entry, | |
1025 | asymbol *symbol, | |
1026 | void *data ATTRIBUTE_UNUSED, | |
1027 | asection *input_section, | |
1028 | bfd *output_bfd, | |
1029 | char **error_message ATTRIBUTE_UNUSED) | |
1030 | { | |
1031 | if (output_bfd != NULL | |
252b5132 RH |
1032 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
1033 | && (! reloc_entry->howto->partial_inplace | |
1034 | || reloc_entry->addend == 0)) | |
1035 | { | |
1036 | reloc_entry->address += input_section->output_offset; | |
1037 | return bfd_reloc_ok; | |
1038 | } | |
1039 | ||
1040 | return bfd_reloc_continue; | |
1041 | } | |
1042 | \f | |
0ac4564e L |
1043 | /* Copy the program header and other data from one object module to |
1044 | another. */ | |
252b5132 | 1045 | |
b34976b6 | 1046 | bfd_boolean |
217aa764 | 1047 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
1048 | { |
1049 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1050 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1051 | return TRUE; |
2d502050 L |
1052 | |
1053 | BFD_ASSERT (!elf_flags_init (obfd) | |
1054 | || (elf_elfheader (obfd)->e_flags | |
1055 | == elf_elfheader (ibfd)->e_flags)); | |
1056 | ||
0ac4564e | 1057 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1058 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 | 1059 | elf_flags_init (obfd) = TRUE; |
104d59d1 JM |
1060 | |
1061 | /* Copy object attributes. */ | |
1062 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
1063 | ||
b34976b6 | 1064 | return TRUE; |
2d502050 L |
1065 | } |
1066 | ||
cedc298e L |
1067 | static const char * |
1068 | get_segment_type (unsigned int p_type) | |
1069 | { | |
1070 | const char *pt; | |
1071 | switch (p_type) | |
1072 | { | |
1073 | case PT_NULL: pt = "NULL"; break; | |
1074 | case PT_LOAD: pt = "LOAD"; break; | |
1075 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1076 | case PT_INTERP: pt = "INTERP"; break; | |
1077 | case PT_NOTE: pt = "NOTE"; break; | |
1078 | case PT_SHLIB: pt = "SHLIB"; break; | |
1079 | case PT_PHDR: pt = "PHDR"; break; | |
1080 | case PT_TLS: pt = "TLS"; break; | |
1081 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; | |
2b05f1b7 | 1082 | case PT_GNU_STACK: pt = "STACK"; break; |
cedc298e L |
1083 | case PT_GNU_RELRO: pt = "RELRO"; break; |
1084 | default: pt = NULL; break; | |
1085 | } | |
1086 | return pt; | |
1087 | } | |
1088 | ||
f0b79d91 L |
1089 | /* Print out the program headers. */ |
1090 | ||
b34976b6 | 1091 | bfd_boolean |
217aa764 | 1092 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1093 | { |
217aa764 | 1094 | FILE *f = farg; |
252b5132 RH |
1095 | Elf_Internal_Phdr *p; |
1096 | asection *s; | |
1097 | bfd_byte *dynbuf = NULL; | |
1098 | ||
1099 | p = elf_tdata (abfd)->phdr; | |
1100 | if (p != NULL) | |
1101 | { | |
1102 | unsigned int i, c; | |
1103 | ||
1104 | fprintf (f, _("\nProgram Header:\n")); | |
1105 | c = elf_elfheader (abfd)->e_phnum; | |
1106 | for (i = 0; i < c; i++, p++) | |
1107 | { | |
cedc298e | 1108 | const char *pt = get_segment_type (p->p_type); |
252b5132 RH |
1109 | char buf[20]; |
1110 | ||
cedc298e | 1111 | if (pt == NULL) |
252b5132 | 1112 | { |
cedc298e L |
1113 | sprintf (buf, "0x%lx", p->p_type); |
1114 | pt = buf; | |
252b5132 | 1115 | } |
dc810e39 | 1116 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1117 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1118 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1119 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1120 | fprintf (f, " paddr 0x"); |
60b89a18 | 1121 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1122 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1123 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1124 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1125 | fprintf (f, " memsz 0x"); |
60b89a18 | 1126 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1127 | fprintf (f, " flags %c%c%c", |
1128 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1129 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1130 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1131 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1132 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1133 | fprintf (f, "\n"); |
1134 | } | |
1135 | } | |
1136 | ||
1137 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1138 | if (s != NULL) | |
1139 | { | |
cb33740c | 1140 | unsigned int elfsec; |
dc810e39 | 1141 | unsigned long shlink; |
252b5132 RH |
1142 | bfd_byte *extdyn, *extdynend; |
1143 | size_t extdynsize; | |
217aa764 | 1144 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1145 | |
1146 | fprintf (f, _("\nDynamic Section:\n")); | |
1147 | ||
eea6121a | 1148 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1149 | goto error_return; |
1150 | ||
1151 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
cb33740c | 1152 | if (elfsec == SHN_BAD) |
252b5132 | 1153 | goto error_return; |
dc810e39 | 1154 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1155 | |
1156 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1157 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1158 | ||
1159 | extdyn = dynbuf; | |
eea6121a | 1160 | extdynend = extdyn + s->size; |
252b5132 RH |
1161 | for (; extdyn < extdynend; extdyn += extdynsize) |
1162 | { | |
1163 | Elf_Internal_Dyn dyn; | |
ad9563d6 | 1164 | const char *name = ""; |
252b5132 | 1165 | char ab[20]; |
b34976b6 | 1166 | bfd_boolean stringp; |
ad9563d6 | 1167 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 1168 | |
217aa764 | 1169 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1170 | |
1171 | if (dyn.d_tag == DT_NULL) | |
1172 | break; | |
1173 | ||
b34976b6 | 1174 | stringp = FALSE; |
252b5132 RH |
1175 | switch (dyn.d_tag) |
1176 | { | |
1177 | default: | |
ad9563d6 CM |
1178 | if (bed->elf_backend_get_target_dtag) |
1179 | name = (*bed->elf_backend_get_target_dtag) (dyn.d_tag); | |
1180 | ||
1181 | if (!strcmp (name, "")) | |
1182 | { | |
1183 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1184 | name = ab; | |
1185 | } | |
252b5132 RH |
1186 | break; |
1187 | ||
b34976b6 | 1188 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1189 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1190 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1191 | case DT_HASH: name = "HASH"; break; | |
1192 | case DT_STRTAB: name = "STRTAB"; break; | |
1193 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1194 | case DT_RELA: name = "RELA"; break; | |
1195 | case DT_RELASZ: name = "RELASZ"; break; | |
1196 | case DT_RELAENT: name = "RELAENT"; break; | |
1197 | case DT_STRSZ: name = "STRSZ"; break; | |
1198 | case DT_SYMENT: name = "SYMENT"; break; | |
1199 | case DT_INIT: name = "INIT"; break; | |
1200 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1201 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1202 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1203 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1204 | case DT_REL: name = "REL"; break; | |
1205 | case DT_RELSZ: name = "RELSZ"; break; | |
1206 | case DT_RELENT: name = "RELENT"; break; | |
1207 | case DT_PLTREL: name = "PLTREL"; break; | |
1208 | case DT_DEBUG: name = "DEBUG"; break; | |
1209 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1210 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1211 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1212 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1213 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1214 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1215 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1216 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1217 | case DT_FLAGS: name = "FLAGS"; break; |
1218 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1219 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1220 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1221 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1222 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1223 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1224 | case DT_FEATURE: name = "FEATURE"; break; | |
1225 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1226 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1227 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1228 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1229 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1230 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1231 | case DT_PLTPAD: name = "PLTPAD"; break; |
1232 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1233 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1234 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1235 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1236 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1237 | case DT_VERSYM: name = "VERSYM"; break; |
1238 | case DT_VERDEF: name = "VERDEF"; break; | |
1239 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1240 | case DT_VERNEED: name = "VERNEED"; break; | |
1241 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1242 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1243 | case DT_USED: name = "USED"; break; |
b34976b6 | 1244 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
fdc90cb4 | 1245 | case DT_GNU_HASH: name = "GNU_HASH"; break; |
252b5132 RH |
1246 | } |
1247 | ||
ad9563d6 | 1248 | fprintf (f, " %-20s ", name); |
252b5132 | 1249 | if (! stringp) |
a1f3c56e AN |
1250 | { |
1251 | fprintf (f, "0x"); | |
1252 | bfd_fprintf_vma (abfd, f, dyn.d_un.d_val); | |
1253 | } | |
252b5132 RH |
1254 | else |
1255 | { | |
1256 | const char *string; | |
dc810e39 | 1257 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1258 | |
dc810e39 | 1259 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1260 | if (string == NULL) |
1261 | goto error_return; | |
1262 | fprintf (f, "%s", string); | |
1263 | } | |
1264 | fprintf (f, "\n"); | |
1265 | } | |
1266 | ||
1267 | free (dynbuf); | |
1268 | dynbuf = NULL; | |
1269 | } | |
1270 | ||
1271 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1272 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1273 | { | |
fc0e6df6 | 1274 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1275 | return FALSE; |
252b5132 RH |
1276 | } |
1277 | ||
1278 | if (elf_dynverdef (abfd) != 0) | |
1279 | { | |
1280 | Elf_Internal_Verdef *t; | |
1281 | ||
1282 | fprintf (f, _("\nVersion definitions:\n")); | |
1283 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1284 | { | |
1285 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
d0fb9a8d JJ |
1286 | t->vd_flags, t->vd_hash, |
1287 | t->vd_nodename ? t->vd_nodename : "<corrupt>"); | |
1288 | if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL) | |
252b5132 RH |
1289 | { |
1290 | Elf_Internal_Verdaux *a; | |
1291 | ||
1292 | fprintf (f, "\t"); | |
1293 | for (a = t->vd_auxptr->vda_nextptr; | |
1294 | a != NULL; | |
1295 | a = a->vda_nextptr) | |
d0fb9a8d JJ |
1296 | fprintf (f, "%s ", |
1297 | a->vda_nodename ? a->vda_nodename : "<corrupt>"); | |
252b5132 RH |
1298 | fprintf (f, "\n"); |
1299 | } | |
1300 | } | |
1301 | } | |
1302 | ||
1303 | if (elf_dynverref (abfd) != 0) | |
1304 | { | |
1305 | Elf_Internal_Verneed *t; | |
1306 | ||
1307 | fprintf (f, _("\nVersion References:\n")); | |
1308 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1309 | { | |
1310 | Elf_Internal_Vernaux *a; | |
1311 | ||
d0fb9a8d JJ |
1312 | fprintf (f, _(" required from %s:\n"), |
1313 | t->vn_filename ? t->vn_filename : "<corrupt>"); | |
252b5132 RH |
1314 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
1315 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
d0fb9a8d JJ |
1316 | a->vna_flags, a->vna_other, |
1317 | a->vna_nodename ? a->vna_nodename : "<corrupt>"); | |
252b5132 RH |
1318 | } |
1319 | } | |
1320 | ||
b34976b6 | 1321 | return TRUE; |
252b5132 RH |
1322 | |
1323 | error_return: | |
1324 | if (dynbuf != NULL) | |
1325 | free (dynbuf); | |
b34976b6 | 1326 | return FALSE; |
252b5132 RH |
1327 | } |
1328 | ||
1329 | /* Display ELF-specific fields of a symbol. */ | |
1330 | ||
1331 | void | |
217aa764 AM |
1332 | bfd_elf_print_symbol (bfd *abfd, |
1333 | void *filep, | |
1334 | asymbol *symbol, | |
1335 | bfd_print_symbol_type how) | |
252b5132 | 1336 | { |
217aa764 | 1337 | FILE *file = filep; |
252b5132 RH |
1338 | switch (how) |
1339 | { | |
1340 | case bfd_print_symbol_name: | |
1341 | fprintf (file, "%s", symbol->name); | |
1342 | break; | |
1343 | case bfd_print_symbol_more: | |
1344 | fprintf (file, "elf "); | |
60b89a18 | 1345 | bfd_fprintf_vma (abfd, file, symbol->value); |
0af1713e | 1346 | fprintf (file, " %lx", (unsigned long) symbol->flags); |
252b5132 RH |
1347 | break; |
1348 | case bfd_print_symbol_all: | |
1349 | { | |
4e8a9624 AM |
1350 | const char *section_name; |
1351 | const char *name = NULL; | |
9c5bfbb7 | 1352 | const struct elf_backend_data *bed; |
7a13edea | 1353 | unsigned char st_other; |
dbb410c3 | 1354 | bfd_vma val; |
c044fabd | 1355 | |
252b5132 | 1356 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1357 | |
1358 | bed = get_elf_backend_data (abfd); | |
1359 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1360 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1361 | |
1362 | if (name == NULL) | |
1363 | { | |
7ee38065 | 1364 | name = symbol->name; |
217aa764 | 1365 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1366 | } |
1367 | ||
252b5132 RH |
1368 | fprintf (file, " %s\t", section_name); |
1369 | /* Print the "other" value for a symbol. For common symbols, | |
1370 | we've already printed the size; now print the alignment. | |
1371 | For other symbols, we have no specified alignment, and | |
1372 | we've printed the address; now print the size. */ | |
dcf6c779 | 1373 | if (symbol->section && bfd_is_com_section (symbol->section)) |
dbb410c3 AM |
1374 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; |
1375 | else | |
1376 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1377 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1378 | |
1379 | /* If we have version information, print it. */ | |
1380 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1381 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1382 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1383 | { | |
1384 | unsigned int vernum; | |
1385 | const char *version_string; | |
1386 | ||
1387 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1388 | ||
1389 | if (vernum == 0) | |
1390 | version_string = ""; | |
1391 | else if (vernum == 1) | |
1392 | version_string = "Base"; | |
1393 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1394 | version_string = | |
1395 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1396 | else | |
1397 | { | |
1398 | Elf_Internal_Verneed *t; | |
1399 | ||
1400 | version_string = ""; | |
1401 | for (t = elf_tdata (abfd)->verref; | |
1402 | t != NULL; | |
1403 | t = t->vn_nextref) | |
1404 | { | |
1405 | Elf_Internal_Vernaux *a; | |
1406 | ||
1407 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1408 | { | |
1409 | if (a->vna_other == vernum) | |
1410 | { | |
1411 | version_string = a->vna_nodename; | |
1412 | break; | |
1413 | } | |
1414 | } | |
1415 | } | |
1416 | } | |
1417 | ||
1418 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1419 | fprintf (file, " %-11s", version_string); | |
1420 | else | |
1421 | { | |
1422 | int i; | |
1423 | ||
1424 | fprintf (file, " (%s)", version_string); | |
1425 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1426 | putc (' ', file); | |
1427 | } | |
1428 | } | |
1429 | ||
1430 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1431 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1432 | |
7a13edea NC |
1433 | switch (st_other) |
1434 | { | |
1435 | case 0: break; | |
1436 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1437 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1438 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1439 | default: | |
1440 | /* Some other non-defined flags are also present, so print | |
1441 | everything hex. */ | |
1442 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1443 | } | |
252b5132 | 1444 | |
587ff49e | 1445 | fprintf (file, " %s", name); |
252b5132 RH |
1446 | } |
1447 | break; | |
1448 | } | |
1449 | } | |
252b5132 | 1450 | |
252b5132 RH |
1451 | /* Allocate an ELF string table--force the first byte to be zero. */ |
1452 | ||
1453 | struct bfd_strtab_hash * | |
217aa764 | 1454 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1455 | { |
1456 | struct bfd_strtab_hash *ret; | |
1457 | ||
1458 | ret = _bfd_stringtab_init (); | |
1459 | if (ret != NULL) | |
1460 | { | |
1461 | bfd_size_type loc; | |
1462 | ||
b34976b6 | 1463 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1464 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1465 | if (loc == (bfd_size_type) -1) | |
1466 | { | |
1467 | _bfd_stringtab_free (ret); | |
1468 | ret = NULL; | |
1469 | } | |
1470 | } | |
1471 | return ret; | |
1472 | } | |
1473 | \f | |
1474 | /* ELF .o/exec file reading */ | |
1475 | ||
c044fabd | 1476 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1477 | |
b34976b6 | 1478 | bfd_boolean |
217aa764 | 1479 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 | 1480 | { |
4fbb74a6 AM |
1481 | Elf_Internal_Shdr *hdr; |
1482 | Elf_Internal_Ehdr *ehdr; | |
1483 | const struct elf_backend_data *bed; | |
90937f86 | 1484 | const char *name; |
252b5132 | 1485 | |
4fbb74a6 AM |
1486 | if (shindex >= elf_numsections (abfd)) |
1487 | return FALSE; | |
1488 | ||
1489 | hdr = elf_elfsections (abfd)[shindex]; | |
1490 | ehdr = elf_elfheader (abfd); | |
1491 | name = bfd_elf_string_from_elf_section (abfd, ehdr->e_shstrndx, | |
1b3a8575 | 1492 | hdr->sh_name); |
933d961a JJ |
1493 | if (name == NULL) |
1494 | return FALSE; | |
252b5132 | 1495 | |
4fbb74a6 | 1496 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
1497 | switch (hdr->sh_type) |
1498 | { | |
1499 | case SHT_NULL: | |
1500 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1501 | return TRUE; |
252b5132 RH |
1502 | |
1503 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1504 | case SHT_NOBITS: /* .bss section. */ |
1505 | case SHT_HASH: /* .hash section. */ | |
1506 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1507 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1508 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1509 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1510 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
fdc90cb4 | 1511 | case SHT_GNU_HASH: /* .gnu.hash section. */ |
6dc132d9 | 1512 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1513 | |
797fc050 | 1514 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1515 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1516 | return FALSE; |
cfcac11d NC |
1517 | if (hdr->sh_link > elf_numsections (abfd)) |
1518 | { | |
1519 | /* PR 10478: Accept sparc binaries with a sh_link | |
1520 | field set to SHN_BEFORE or SHN_AFTER. */ | |
1521 | switch (bfd_get_arch (abfd)) | |
1522 | { | |
1523 | case bfd_arch_sparc: | |
1524 | if (hdr->sh_link == (SHN_LORESERVE & 0xffff) /* SHN_BEFORE */ | |
1525 | || hdr->sh_link == ((SHN_LORESERVE + 1) & 0xffff) /* SHN_AFTER */) | |
1526 | break; | |
1527 | /* Otherwise fall through. */ | |
1528 | default: | |
1529 | return FALSE; | |
1530 | } | |
1531 | } | |
1532 | else if (elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
8e0ed13f | 1533 | return FALSE; |
cfcac11d | 1534 | else if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
797fc050 AM |
1535 | { |
1536 | Elf_Internal_Shdr *dynsymhdr; | |
1537 | ||
1538 | /* The shared libraries distributed with hpux11 have a bogus | |
1539 | sh_link field for the ".dynamic" section. Find the | |
1540 | string table for the ".dynsym" section instead. */ | |
1541 | if (elf_dynsymtab (abfd) != 0) | |
1542 | { | |
1543 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1544 | hdr->sh_link = dynsymhdr->sh_link; | |
1545 | } | |
1546 | else | |
1547 | { | |
1548 | unsigned int i, num_sec; | |
1549 | ||
1550 | num_sec = elf_numsections (abfd); | |
1551 | for (i = 1; i < num_sec; i++) | |
1552 | { | |
1553 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1554 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1555 | { | |
1556 | hdr->sh_link = dynsymhdr->sh_link; | |
1557 | break; | |
1558 | } | |
1559 | } | |
1560 | } | |
1561 | } | |
1562 | break; | |
1563 | ||
252b5132 RH |
1564 | case SHT_SYMTAB: /* A symbol table */ |
1565 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1566 | return TRUE; |
252b5132 | 1567 | |
a50b2160 JJ |
1568 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1569 | return FALSE; | |
3337c1e5 AM |
1570 | if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size) |
1571 | return FALSE; | |
252b5132 RH |
1572 | BFD_ASSERT (elf_onesymtab (abfd) == 0); |
1573 | elf_onesymtab (abfd) = shindex; | |
1574 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1575 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1576 | abfd->flags |= HAS_SYMS; | |
1577 | ||
1578 | /* Sometimes a shared object will map in the symbol table. If | |
08a40648 AM |
1579 | SHF_ALLOC is set, and this is a shared object, then we also |
1580 | treat this section as a BFD section. We can not base the | |
1581 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1582 | set in a relocatable object file, which would confuse the | |
1583 | linker. */ | |
252b5132 RH |
1584 | if ((hdr->sh_flags & SHF_ALLOC) != 0 |
1585 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1586 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1587 | shindex)) | |
b34976b6 | 1588 | return FALSE; |
252b5132 | 1589 | |
1b3a8575 AM |
1590 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1591 | can't read symbols without that section loaded as well. It | |
1592 | is most likely specified by the next section header. */ | |
1593 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1594 | { | |
1595 | unsigned int i, num_sec; | |
1596 | ||
1597 | num_sec = elf_numsections (abfd); | |
1598 | for (i = shindex + 1; i < num_sec; i++) | |
1599 | { | |
1600 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1601 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1602 | && hdr2->sh_link == shindex) | |
1603 | break; | |
1604 | } | |
1605 | if (i == num_sec) | |
1606 | for (i = 1; i < shindex; 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 != shindex) | |
1614 | return bfd_section_from_shdr (abfd, i); | |
1615 | } | |
b34976b6 | 1616 | return TRUE; |
252b5132 RH |
1617 | |
1618 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1619 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1620 | return TRUE; |
252b5132 | 1621 | |
a50b2160 JJ |
1622 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1623 | return FALSE; | |
252b5132 RH |
1624 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); |
1625 | elf_dynsymtab (abfd) = shindex; | |
1626 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1627 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1628 | abfd->flags |= HAS_SYMS; | |
1629 | ||
1630 | /* Besides being a symbol table, we also treat this as a regular | |
1631 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1632 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1633 | |
9ad5cbcf AM |
1634 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1635 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1636 | return TRUE; |
9ad5cbcf | 1637 | |
1b3a8575 | 1638 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1639 | elf_symtab_shndx (abfd) = shindex; |
1640 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1641 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1642 | return TRUE; |
9ad5cbcf | 1643 | |
252b5132 RH |
1644 | case SHT_STRTAB: /* A string table */ |
1645 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1646 | return TRUE; |
252b5132 RH |
1647 | if (ehdr->e_shstrndx == shindex) |
1648 | { | |
1649 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1650 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1651 | return TRUE; |
252b5132 | 1652 | } |
1b3a8575 AM |
1653 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1654 | { | |
1655 | symtab_strtab: | |
1656 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1657 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1658 | return TRUE; | |
1659 | } | |
1660 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1661 | { | |
1662 | dynsymtab_strtab: | |
1663 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1664 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1665 | elf_elfsections (abfd)[shindex] = hdr; | |
1666 | /* We also treat this as a regular section, so that objcopy | |
1667 | can handle it. */ | |
6dc132d9 L |
1668 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1669 | shindex); | |
1b3a8575 | 1670 | } |
252b5132 | 1671 | |
1b3a8575 AM |
1672 | /* If the string table isn't one of the above, then treat it as a |
1673 | regular section. We need to scan all the headers to be sure, | |
1674 | just in case this strtab section appeared before the above. */ | |
1675 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
1676 | { | |
1677 | unsigned int i, num_sec; | |
252b5132 | 1678 | |
1b3a8575 AM |
1679 | num_sec = elf_numsections (abfd); |
1680 | for (i = 1; i < num_sec; i++) | |
1681 | { | |
1682 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1683 | if (hdr2->sh_link == shindex) | |
1684 | { | |
933d961a JJ |
1685 | /* Prevent endless recursion on broken objects. */ |
1686 | if (i == shindex) | |
1687 | return FALSE; | |
1b3a8575 AM |
1688 | if (! bfd_section_from_shdr (abfd, i)) |
1689 | return FALSE; | |
1690 | if (elf_onesymtab (abfd) == i) | |
1691 | goto symtab_strtab; | |
1692 | if (elf_dynsymtab (abfd) == i) | |
1693 | goto dynsymtab_strtab; | |
1694 | } | |
1695 | } | |
1696 | } | |
6dc132d9 | 1697 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1698 | |
1699 | case SHT_REL: | |
1700 | case SHT_RELA: | |
1701 | /* *These* do a lot of work -- but build no sections! */ | |
1702 | { | |
1703 | asection *target_sect; | |
1704 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 1705 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 1706 | |
aa2ca951 JJ |
1707 | if (hdr->sh_entsize |
1708 | != (bfd_size_type) (hdr->sh_type == SHT_REL | |
a50b2160 JJ |
1709 | ? bed->s->sizeof_rel : bed->s->sizeof_rela)) |
1710 | return FALSE; | |
1711 | ||
03ae5f59 | 1712 | /* Check for a bogus link to avoid crashing. */ |
4fbb74a6 | 1713 | if (hdr->sh_link >= num_sec) |
03ae5f59 ILT |
1714 | { |
1715 | ((*_bfd_error_handler) | |
d003868e AM |
1716 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
1717 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
1718 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1719 | shindex); | |
03ae5f59 ILT |
1720 | } |
1721 | ||
252b5132 RH |
1722 | /* For some incomprehensible reason Oracle distributes |
1723 | libraries for Solaris in which some of the objects have | |
1724 | bogus sh_link fields. It would be nice if we could just | |
1725 | reject them, but, unfortunately, some people need to use | |
1726 | them. We scan through the section headers; if we find only | |
1727 | one suitable symbol table, we clobber the sh_link to point | |
83b89087 L |
1728 | to it. I hope this doesn't break anything. |
1729 | ||
1730 | Don't do it on executable nor shared library. */ | |
1731 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0 | |
1732 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
252b5132 RH |
1733 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) |
1734 | { | |
9ad5cbcf | 1735 | unsigned int scan; |
252b5132 RH |
1736 | int found; |
1737 | ||
1738 | found = 0; | |
9ad5cbcf | 1739 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
1740 | { |
1741 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
1742 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
1743 | { | |
1744 | if (found != 0) | |
1745 | { | |
1746 | found = 0; | |
1747 | break; | |
1748 | } | |
1749 | found = scan; | |
1750 | } | |
1751 | } | |
1752 | if (found != 0) | |
1753 | hdr->sh_link = found; | |
1754 | } | |
1755 | ||
1756 | /* Get the symbol table. */ | |
1b3a8575 AM |
1757 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
1758 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 1759 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 1760 | return FALSE; |
252b5132 RH |
1761 | |
1762 | /* If this reloc section does not use the main symbol table we | |
1763 | don't treat it as a reloc section. BFD can't adequately | |
1764 | represent such a section, so at least for now, we don't | |
c044fabd | 1765 | try. We just present it as a normal section. We also |
60bcf0fa | 1766 | can't use it as a reloc section if it points to the null |
83b89087 L |
1767 | section, an invalid section, another reloc section, or its |
1768 | sh_link points to the null section. */ | |
185ef66d | 1769 | if (hdr->sh_link != elf_onesymtab (abfd) |
83b89087 | 1770 | || hdr->sh_link == SHN_UNDEF |
185ef66d | 1771 | || hdr->sh_info == SHN_UNDEF |
185ef66d AM |
1772 | || hdr->sh_info >= num_sec |
1773 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL | |
1774 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA) | |
6dc132d9 L |
1775 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1776 | shindex); | |
252b5132 RH |
1777 | |
1778 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 1779 | return FALSE; |
252b5132 RH |
1780 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
1781 | if (target_sect == NULL) | |
b34976b6 | 1782 | return FALSE; |
252b5132 RH |
1783 | |
1784 | if ((target_sect->flags & SEC_RELOC) == 0 | |
1785 | || target_sect->reloc_count == 0) | |
1786 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
1787 | else | |
1788 | { | |
dc810e39 | 1789 | bfd_size_type amt; |
252b5132 | 1790 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 1791 | amt = sizeof (*hdr2); |
217aa764 | 1792 | hdr2 = bfd_alloc (abfd, amt); |
14b1c01e AM |
1793 | if (hdr2 == NULL) |
1794 | return FALSE; | |
252b5132 RH |
1795 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
1796 | } | |
1797 | *hdr2 = *hdr; | |
1798 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 1799 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
1800 | target_sect->flags |= SEC_RELOC; |
1801 | target_sect->relocation = NULL; | |
1802 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
1803 | /* In the section to which the relocations apply, mark whether |
1804 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 1805 | if (hdr->sh_size != 0) |
68bfbfcc | 1806 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 1807 | abfd->flags |= HAS_RELOC; |
b34976b6 | 1808 | return TRUE; |
252b5132 | 1809 | } |
252b5132 RH |
1810 | |
1811 | case SHT_GNU_verdef: | |
1812 | elf_dynverdef (abfd) = shindex; | |
1813 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 1814 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1815 | |
1816 | case SHT_GNU_versym: | |
a50b2160 JJ |
1817 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
1818 | return FALSE; | |
252b5132 RH |
1819 | elf_dynversym (abfd) = shindex; |
1820 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 1821 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1822 | |
1823 | case SHT_GNU_verneed: | |
1824 | elf_dynverref (abfd) = shindex; | |
1825 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 1826 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1827 | |
1828 | case SHT_SHLIB: | |
b34976b6 | 1829 | return TRUE; |
252b5132 | 1830 | |
dbb410c3 | 1831 | case SHT_GROUP: |
1783205a | 1832 | if (! IS_VALID_GROUP_SECTION_HEADER (hdr)) |
a50b2160 | 1833 | return FALSE; |
6dc132d9 | 1834 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1835 | return FALSE; |
dbb410c3 AM |
1836 | if (hdr->contents != NULL) |
1837 | { | |
1838 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
1783205a | 1839 | unsigned int n_elt = hdr->sh_size / GRP_ENTRY_SIZE; |
dbb410c3 AM |
1840 | asection *s; |
1841 | ||
b885599b AM |
1842 | if (idx->flags & GRP_COMDAT) |
1843 | hdr->bfd_section->flags | |
1844 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
1845 | ||
45c5e9ed L |
1846 | /* We try to keep the same section order as it comes in. */ |
1847 | idx += n_elt; | |
dbb410c3 | 1848 | while (--n_elt != 0) |
1783205a NC |
1849 | { |
1850 | --idx; | |
1851 | ||
1852 | if (idx->shdr != NULL | |
1853 | && (s = idx->shdr->bfd_section) != NULL | |
1854 | && elf_next_in_group (s) != NULL) | |
1855 | { | |
1856 | elf_next_in_group (hdr->bfd_section) = s; | |
1857 | break; | |
1858 | } | |
1859 | } | |
dbb410c3 AM |
1860 | } |
1861 | break; | |
1862 | ||
252b5132 | 1863 | default: |
104d59d1 JM |
1864 | /* Possibly an attributes section. */ |
1865 | if (hdr->sh_type == SHT_GNU_ATTRIBUTES | |
1866 | || hdr->sh_type == bed->obj_attrs_section_type) | |
1867 | { | |
1868 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
1869 | return FALSE; | |
1870 | _bfd_elf_parse_attributes (abfd, hdr); | |
1871 | return TRUE; | |
1872 | } | |
1873 | ||
252b5132 | 1874 | /* Check for any processor-specific section types. */ |
3eb70a79 L |
1875 | if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex)) |
1876 | return TRUE; | |
1877 | ||
1878 | if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER) | |
1879 | { | |
1880 | if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
1881 | /* FIXME: How to properly handle allocated section reserved | |
1882 | for applications? */ | |
1883 | (*_bfd_error_handler) | |
1884 | (_("%B: don't know how to handle allocated, application " | |
1885 | "specific section `%s' [0x%8x]"), | |
1886 | abfd, name, hdr->sh_type); | |
1887 | else | |
1888 | /* Allow sections reserved for applications. */ | |
1889 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
1890 | shindex); | |
1891 | } | |
1892 | else if (hdr->sh_type >= SHT_LOPROC | |
1893 | && hdr->sh_type <= SHT_HIPROC) | |
1894 | /* FIXME: We should handle this section. */ | |
1895 | (*_bfd_error_handler) | |
1896 | (_("%B: don't know how to handle processor specific section " | |
1897 | "`%s' [0x%8x]"), | |
1898 | abfd, name, hdr->sh_type); | |
1899 | else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS) | |
ff15b240 NC |
1900 | { |
1901 | /* Unrecognised OS-specific sections. */ | |
1902 | if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0) | |
1903 | /* SHF_OS_NONCONFORMING indicates that special knowledge is | |
08a40648 | 1904 | required to correctly process the section and the file should |
ff15b240 NC |
1905 | be rejected with an error message. */ |
1906 | (*_bfd_error_handler) | |
1907 | (_("%B: don't know how to handle OS specific section " | |
1908 | "`%s' [0x%8x]"), | |
1909 | abfd, name, hdr->sh_type); | |
1910 | else | |
1911 | /* Otherwise it should be processed. */ | |
1912 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
1913 | } | |
3eb70a79 L |
1914 | else |
1915 | /* FIXME: We should handle this section. */ | |
1916 | (*_bfd_error_handler) | |
1917 | (_("%B: don't know how to handle section `%s' [0x%8x]"), | |
1918 | abfd, name, hdr->sh_type); | |
1919 | ||
1920 | return FALSE; | |
252b5132 RH |
1921 | } |
1922 | ||
b34976b6 | 1923 | return TRUE; |
252b5132 RH |
1924 | } |
1925 | ||
87d72d41 | 1926 | /* Return the local symbol specified by ABFD, R_SYMNDX. */ |
ec338859 | 1927 | |
87d72d41 AM |
1928 | Elf_Internal_Sym * |
1929 | bfd_sym_from_r_symndx (struct sym_cache *cache, | |
1930 | bfd *abfd, | |
1931 | unsigned long r_symndx) | |
ec338859 | 1932 | { |
ec338859 AM |
1933 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
1934 | ||
a5d1b3b5 AM |
1935 | if (cache->abfd != abfd || cache->indx[ent] != r_symndx) |
1936 | { | |
1937 | Elf_Internal_Shdr *symtab_hdr; | |
1938 | unsigned char esym[sizeof (Elf64_External_Sym)]; | |
1939 | Elf_External_Sym_Shndx eshndx; | |
ec338859 | 1940 | |
a5d1b3b5 AM |
1941 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1942 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, | |
87d72d41 | 1943 | &cache->sym[ent], esym, &eshndx) == NULL) |
a5d1b3b5 | 1944 | return NULL; |
9ad5cbcf | 1945 | |
a5d1b3b5 AM |
1946 | if (cache->abfd != abfd) |
1947 | { | |
1948 | memset (cache->indx, -1, sizeof (cache->indx)); | |
1949 | cache->abfd = abfd; | |
1950 | } | |
1951 | cache->indx[ent] = r_symndx; | |
ec338859 | 1952 | } |
a5d1b3b5 | 1953 | |
87d72d41 | 1954 | return &cache->sym[ent]; |
ec338859 AM |
1955 | } |
1956 | ||
252b5132 RH |
1957 | /* Given an ELF section number, retrieve the corresponding BFD |
1958 | section. */ | |
1959 | ||
1960 | asection * | |
217aa764 | 1961 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 1962 | { |
9ad5cbcf | 1963 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
1964 | return NULL; |
1965 | return elf_elfsections (abfd)[index]->bfd_section; | |
1966 | } | |
1967 | ||
b35d266b | 1968 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 1969 | { |
0112cd26 NC |
1970 | { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
1971 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1972 | }; |
1973 | ||
b35d266b | 1974 | static const struct bfd_elf_special_section special_sections_c[] = |
7f4d3958 | 1975 | { |
0112cd26 NC |
1976 | { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 }, |
1977 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1978 | }; |
1979 | ||
b35d266b | 1980 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 1981 | { |
0112cd26 NC |
1982 | { STRING_COMMA_LEN (".data"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1983 | { STRING_COMMA_LEN (".data1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
1984 | { STRING_COMMA_LEN (".debug"), 0, SHT_PROGBITS, 0 }, | |
1985 | { STRING_COMMA_LEN (".debug_line"), 0, SHT_PROGBITS, 0 }, | |
1986 | { STRING_COMMA_LEN (".debug_info"), 0, SHT_PROGBITS, 0 }, | |
1987 | { STRING_COMMA_LEN (".debug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
1988 | { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 }, | |
1989 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, SHF_ALLOC }, | |
1990 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, SHF_ALLOC }, | |
1991 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, SHF_ALLOC }, | |
1992 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1993 | }; |
1994 | ||
b35d266b | 1995 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 | 1996 | { |
0112cd26 NC |
1997 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
1998 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
1999 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2000 | }; |
2001 | ||
b35d266b | 2002 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 | 2003 | { |
0112cd26 NC |
2004 | { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2005 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2006 | { STRING_COMMA_LEN (".gnu.version"), 0, SHT_GNU_versym, 0 }, | |
2007 | { STRING_COMMA_LEN (".gnu.version_d"), 0, SHT_GNU_verdef, 0 }, | |
2008 | { STRING_COMMA_LEN (".gnu.version_r"), 0, SHT_GNU_verneed, 0 }, | |
2009 | { STRING_COMMA_LEN (".gnu.liblist"), 0, SHT_GNU_LIBLIST, SHF_ALLOC }, | |
2010 | { STRING_COMMA_LEN (".gnu.conflict"), 0, SHT_RELA, SHF_ALLOC }, | |
2011 | { STRING_COMMA_LEN (".gnu.hash"), 0, SHT_GNU_HASH, SHF_ALLOC }, | |
2012 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2013 | }; |
2014 | ||
b35d266b | 2015 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 | 2016 | { |
0112cd26 NC |
2017 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, SHF_ALLOC }, |
2018 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2019 | }; |
2020 | ||
b35d266b | 2021 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 | 2022 | { |
0112cd26 NC |
2023 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2024 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2025 | { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 }, | |
2026 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2027 | }; |
2028 | ||
b35d266b | 2029 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 | 2030 | { |
0112cd26 NC |
2031 | { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 }, |
2032 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2033 | }; |
2034 | ||
b35d266b | 2035 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2036 | { |
0112cd26 NC |
2037 | { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 }, |
2038 | { STRING_COMMA_LEN (".note"), -1, SHT_NOTE, 0 }, | |
2039 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2040 | }; |
2041 | ||
b35d266b | 2042 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 | 2043 | { |
0112cd26 NC |
2044 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, |
2045 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2046 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2047 | }; |
2048 | ||
b35d266b | 2049 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 | 2050 | { |
0112cd26 NC |
2051 | { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC }, |
2052 | { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2053 | { STRING_COMMA_LEN (".rela"), -1, SHT_RELA, 0 }, | |
2054 | { STRING_COMMA_LEN (".rel"), -1, SHT_REL, 0 }, | |
2055 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2056 | }; |
2057 | ||
b35d266b | 2058 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 | 2059 | { |
0112cd26 NC |
2060 | { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 }, |
2061 | { STRING_COMMA_LEN (".strtab"), 0, SHT_STRTAB, 0 }, | |
2062 | { STRING_COMMA_LEN (".symtab"), 0, SHT_SYMTAB, 0 }, | |
60ff4dc4 HPN |
2063 | /* See struct bfd_elf_special_section declaration for the semantics of |
2064 | this special case where .prefix_length != strlen (.prefix). */ | |
2065 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
0112cd26 | 2066 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
2067 | }; |
2068 | ||
b35d266b | 2069 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 | 2070 | { |
0112cd26 NC |
2071 | { STRING_COMMA_LEN (".text"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2072 | { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2073 | { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2074 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2075 | }; |
2076 | ||
1b315056 CS |
2077 | static const struct bfd_elf_special_section special_sections_z[] = |
2078 | { | |
2079 | { STRING_COMMA_LEN (".zdebug_line"), 0, SHT_PROGBITS, 0 }, | |
2080 | { STRING_COMMA_LEN (".zdebug_info"), 0, SHT_PROGBITS, 0 }, | |
2081 | { STRING_COMMA_LEN (".zdebug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
2082 | { STRING_COMMA_LEN (".zdebug_aranges"), 0, SHT_PROGBITS, 0 }, | |
2083 | { NULL, 0, 0, 0, 0 } | |
2084 | }; | |
2085 | ||
b35d266b | 2086 | static const struct bfd_elf_special_section *special_sections[] = |
7f4d3958 | 2087 | { |
7f4d3958 | 2088 | special_sections_b, /* 'b' */ |
98ece1b3 | 2089 | special_sections_c, /* 'c' */ |
7f4d3958 L |
2090 | special_sections_d, /* 'd' */ |
2091 | NULL, /* 'e' */ | |
2092 | special_sections_f, /* 'f' */ | |
2093 | special_sections_g, /* 'g' */ | |
2094 | special_sections_h, /* 'h' */ | |
2095 | special_sections_i, /* 'i' */ | |
2096 | NULL, /* 'j' */ | |
2097 | NULL, /* 'k' */ | |
2098 | special_sections_l, /* 'l' */ | |
2099 | NULL, /* 'm' */ | |
2100 | special_sections_n, /* 'n' */ | |
2101 | NULL, /* 'o' */ | |
2102 | special_sections_p, /* 'p' */ | |
2103 | NULL, /* 'q' */ | |
2104 | special_sections_r, /* 'r' */ | |
2105 | special_sections_s, /* 's' */ | |
2106 | special_sections_t, /* 't' */ | |
1b315056 CS |
2107 | NULL, /* 'u' */ |
2108 | NULL, /* 'v' */ | |
2109 | NULL, /* 'w' */ | |
2110 | NULL, /* 'x' */ | |
2111 | NULL, /* 'y' */ | |
2112 | special_sections_z /* 'z' */ | |
7f4d3958 L |
2113 | }; |
2114 | ||
551b43fd AM |
2115 | const struct bfd_elf_special_section * |
2116 | _bfd_elf_get_special_section (const char *name, | |
2117 | const struct bfd_elf_special_section *spec, | |
2118 | unsigned int rela) | |
2f89ff8d L |
2119 | { |
2120 | int i; | |
7f4d3958 | 2121 | int len; |
7f4d3958 | 2122 | |
551b43fd | 2123 | len = strlen (name); |
7f4d3958 | 2124 | |
551b43fd | 2125 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2126 | { |
2127 | int suffix_len; | |
551b43fd | 2128 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2129 | |
2130 | if (len < prefix_len) | |
2131 | continue; | |
551b43fd | 2132 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2133 | continue; |
2134 | ||
551b43fd | 2135 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2136 | if (suffix_len <= 0) |
2137 | { | |
2138 | if (name[prefix_len] != 0) | |
2139 | { | |
2140 | if (suffix_len == 0) | |
2141 | continue; | |
2142 | if (name[prefix_len] != '.' | |
2143 | && (suffix_len == -2 | |
551b43fd | 2144 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2145 | continue; |
2146 | } | |
2147 | } | |
2148 | else | |
2149 | { | |
2150 | if (len < prefix_len + suffix_len) | |
2151 | continue; | |
2152 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2153 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2154 | suffix_len) != 0) |
2155 | continue; | |
2156 | } | |
551b43fd | 2157 | return &spec[i]; |
7dcb9820 | 2158 | } |
2f89ff8d L |
2159 | |
2160 | return NULL; | |
2161 | } | |
2162 | ||
7dcb9820 | 2163 | const struct bfd_elf_special_section * |
29ef7005 | 2164 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2165 | { |
551b43fd AM |
2166 | int i; |
2167 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2168 | const struct elf_backend_data *bed; |
2f89ff8d L |
2169 | |
2170 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2171 | if (sec->name == NULL) |
2172 | return NULL; | |
2f89ff8d | 2173 | |
29ef7005 L |
2174 | bed = get_elf_backend_data (abfd); |
2175 | spec = bed->special_sections; | |
2176 | if (spec) | |
2177 | { | |
2178 | spec = _bfd_elf_get_special_section (sec->name, | |
2179 | bed->special_sections, | |
2180 | sec->use_rela_p); | |
2181 | if (spec != NULL) | |
2182 | return spec; | |
2183 | } | |
2184 | ||
551b43fd AM |
2185 | if (sec->name[0] != '.') |
2186 | return NULL; | |
2f89ff8d | 2187 | |
551b43fd | 2188 | i = sec->name[1] - 'b'; |
1b315056 | 2189 | if (i < 0 || i > 'z' - 'b') |
551b43fd AM |
2190 | return NULL; |
2191 | ||
2192 | spec = special_sections[i]; | |
2f89ff8d | 2193 | |
551b43fd AM |
2194 | if (spec == NULL) |
2195 | return NULL; | |
2196 | ||
2197 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2198 | } |
2199 | ||
b34976b6 | 2200 | bfd_boolean |
217aa764 | 2201 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2202 | { |
2203 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2204 | const struct elf_backend_data *bed; |
7dcb9820 | 2205 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2206 | |
f0abc2a1 AM |
2207 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2208 | if (sdata == NULL) | |
2209 | { | |
217aa764 | 2210 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2211 | if (sdata == NULL) |
2212 | return FALSE; | |
217aa764 | 2213 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2214 | } |
bf572ba0 | 2215 | |
551b43fd AM |
2216 | /* Indicate whether or not this section should use RELA relocations. */ |
2217 | bed = get_elf_backend_data (abfd); | |
2218 | sec->use_rela_p = bed->default_use_rela_p; | |
2219 | ||
e843e0f8 L |
2220 | /* When we read a file, we don't need to set ELF section type and |
2221 | flags. They will be overridden in _bfd_elf_make_section_from_shdr | |
2222 | anyway. We will set ELF section type and flags for all linker | |
2223 | created sections. If user specifies BFD section flags, we will | |
2224 | set ELF section type and flags based on BFD section flags in | |
2225 | elf_fake_sections. */ | |
2226 | if ((!sec->flags && abfd->direction != read_direction) | |
3496cb2a | 2227 | || (sec->flags & SEC_LINKER_CREATED) != 0) |
2f89ff8d | 2228 | { |
551b43fd | 2229 | ssect = (*bed->get_sec_type_attr) (abfd, sec); |
a31501e9 L |
2230 | if (ssect != NULL) |
2231 | { | |
2232 | elf_section_type (sec) = ssect->type; | |
2233 | elf_section_flags (sec) = ssect->attr; | |
2234 | } | |
2f89ff8d L |
2235 | } |
2236 | ||
f592407e | 2237 | return _bfd_generic_new_section_hook (abfd, sec); |
252b5132 RH |
2238 | } |
2239 | ||
2240 | /* Create a new bfd section from an ELF program header. | |
2241 | ||
2242 | Since program segments have no names, we generate a synthetic name | |
2243 | of the form segment<NUM>, where NUM is generally the index in the | |
2244 | program header table. For segments that are split (see below) we | |
2245 | generate the names segment<NUM>a and segment<NUM>b. | |
2246 | ||
2247 | Note that some program segments may have a file size that is different than | |
2248 | (less than) the memory size. All this means is that at execution the | |
2249 | system must allocate the amount of memory specified by the memory size, | |
2250 | but only initialize it with the first "file size" bytes read from the | |
2251 | file. This would occur for example, with program segments consisting | |
2252 | of combined data+bss. | |
2253 | ||
2254 | To handle the above situation, this routine generates TWO bfd sections | |
2255 | for the single program segment. The first has the length specified by | |
2256 | the file size of the segment, and the second has the length specified | |
2257 | by the difference between the two sizes. In effect, the segment is split | |
d5191d0c | 2258 | into its initialized and uninitialized parts. |
252b5132 RH |
2259 | |
2260 | */ | |
2261 | ||
b34976b6 | 2262 | bfd_boolean |
217aa764 AM |
2263 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2264 | Elf_Internal_Phdr *hdr, | |
2265 | int index, | |
2266 | const char *typename) | |
252b5132 RH |
2267 | { |
2268 | asection *newsect; | |
2269 | char *name; | |
2270 | char namebuf[64]; | |
d4c88bbb | 2271 | size_t len; |
252b5132 RH |
2272 | int split; |
2273 | ||
2274 | split = ((hdr->p_memsz > 0) | |
2275 | && (hdr->p_filesz > 0) | |
2276 | && (hdr->p_memsz > hdr->p_filesz)); | |
d5191d0c AM |
2277 | |
2278 | if (hdr->p_filesz > 0) | |
252b5132 | 2279 | { |
d5191d0c AM |
2280 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
2281 | len = strlen (namebuf) + 1; | |
2282 | name = bfd_alloc (abfd, len); | |
2283 | if (!name) | |
2284 | return FALSE; | |
2285 | memcpy (name, namebuf, len); | |
2286 | newsect = bfd_make_section (abfd, name); | |
2287 | if (newsect == NULL) | |
2288 | return FALSE; | |
2289 | newsect->vma = hdr->p_vaddr; | |
2290 | newsect->lma = hdr->p_paddr; | |
2291 | newsect->size = hdr->p_filesz; | |
2292 | newsect->filepos = hdr->p_offset; | |
2293 | newsect->flags |= SEC_HAS_CONTENTS; | |
2294 | newsect->alignment_power = bfd_log2 (hdr->p_align); | |
2295 | if (hdr->p_type == PT_LOAD) | |
252b5132 | 2296 | { |
d5191d0c AM |
2297 | newsect->flags |= SEC_ALLOC; |
2298 | newsect->flags |= SEC_LOAD; | |
2299 | if (hdr->p_flags & PF_X) | |
2300 | { | |
2301 | /* FIXME: all we known is that it has execute PERMISSION, | |
2302 | may be data. */ | |
2303 | newsect->flags |= SEC_CODE; | |
2304 | } | |
2305 | } | |
2306 | if (!(hdr->p_flags & PF_W)) | |
2307 | { | |
2308 | newsect->flags |= SEC_READONLY; | |
252b5132 | 2309 | } |
252b5132 RH |
2310 | } |
2311 | ||
d5191d0c | 2312 | if (hdr->p_memsz > hdr->p_filesz) |
252b5132 | 2313 | { |
d5191d0c AM |
2314 | bfd_vma align; |
2315 | ||
2316 | sprintf (namebuf, "%s%d%s", typename, index, split ? "b" : ""); | |
d4c88bbb | 2317 | len = strlen (namebuf) + 1; |
217aa764 | 2318 | name = bfd_alloc (abfd, len); |
252b5132 | 2319 | if (!name) |
b34976b6 | 2320 | return FALSE; |
d4c88bbb | 2321 | memcpy (name, namebuf, len); |
252b5132 RH |
2322 | newsect = bfd_make_section (abfd, name); |
2323 | if (newsect == NULL) | |
b34976b6 | 2324 | return FALSE; |
252b5132 RH |
2325 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2326 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2327 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
d5191d0c AM |
2328 | newsect->filepos = hdr->p_offset + hdr->p_filesz; |
2329 | align = newsect->vma & -newsect->vma; | |
2330 | if (align == 0 || align > hdr->p_align) | |
2331 | align = hdr->p_align; | |
2332 | newsect->alignment_power = bfd_log2 (align); | |
252b5132 RH |
2333 | if (hdr->p_type == PT_LOAD) |
2334 | { | |
d5191d0c AM |
2335 | /* Hack for gdb. Segments that have not been modified do |
2336 | not have their contents written to a core file, on the | |
2337 | assumption that a debugger can find the contents in the | |
2338 | executable. We flag this case by setting the fake | |
2339 | section size to zero. Note that "real" bss sections will | |
2340 | always have their contents dumped to the core file. */ | |
2341 | if (bfd_get_format (abfd) == bfd_core) | |
2342 | newsect->size = 0; | |
252b5132 RH |
2343 | newsect->flags |= SEC_ALLOC; |
2344 | if (hdr->p_flags & PF_X) | |
2345 | newsect->flags |= SEC_CODE; | |
2346 | } | |
2347 | if (!(hdr->p_flags & PF_W)) | |
2348 | newsect->flags |= SEC_READONLY; | |
2349 | } | |
2350 | ||
b34976b6 | 2351 | return TRUE; |
252b5132 RH |
2352 | } |
2353 | ||
b34976b6 | 2354 | bfd_boolean |
217aa764 | 2355 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2356 | { |
9c5bfbb7 | 2357 | const struct elf_backend_data *bed; |
20cfcaae NC |
2358 | |
2359 | switch (hdr->p_type) | |
2360 | { | |
2361 | case PT_NULL: | |
2362 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2363 | ||
2364 | case PT_LOAD: | |
2365 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2366 | ||
2367 | case PT_DYNAMIC: | |
2368 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2369 | ||
2370 | case PT_INTERP: | |
2371 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2372 | ||
2373 | case PT_NOTE: | |
2374 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2375 | return FALSE; |
718175fa | 2376 | if (! elf_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2377 | return FALSE; |
2378 | return TRUE; | |
20cfcaae NC |
2379 | |
2380 | case PT_SHLIB: | |
2381 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2382 | ||
2383 | case PT_PHDR: | |
2384 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2385 | ||
811072d8 RM |
2386 | case PT_GNU_EH_FRAME: |
2387 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2388 | "eh_frame_hdr"); | |
2389 | ||
2b05f1b7 L |
2390 | case PT_GNU_STACK: |
2391 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
9ee5e499 | 2392 | |
8c37241b JJ |
2393 | case PT_GNU_RELRO: |
2394 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2395 | ||
20cfcaae | 2396 | default: |
8c1acd09 | 2397 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2398 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2399 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2400 | } |
2401 | } | |
2402 | ||
23bc299b | 2403 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2404 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2405 | relocations; otherwise, we use REL relocations. */ |
2406 | ||
b34976b6 | 2407 | bfd_boolean |
217aa764 AM |
2408 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2409 | Elf_Internal_Shdr *rel_hdr, | |
2410 | asection *asect, | |
2411 | bfd_boolean use_rela_p) | |
23bc299b MM |
2412 | { |
2413 | char *name; | |
9c5bfbb7 | 2414 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2415 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2416 | |
dc810e39 | 2417 | name = bfd_alloc (abfd, amt); |
23bc299b | 2418 | if (name == NULL) |
b34976b6 | 2419 | return FALSE; |
23bc299b MM |
2420 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2421 | rel_hdr->sh_name = | |
2b0f7ef9 | 2422 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2423 | FALSE); |
23bc299b | 2424 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2425 | return FALSE; |
23bc299b MM |
2426 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2427 | rel_hdr->sh_entsize = (use_rela_p | |
2428 | ? bed->s->sizeof_rela | |
2429 | : bed->s->sizeof_rel); | |
72de5009 | 2430 | rel_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align; |
23bc299b MM |
2431 | rel_hdr->sh_flags = 0; |
2432 | rel_hdr->sh_addr = 0; | |
2433 | rel_hdr->sh_size = 0; | |
2434 | rel_hdr->sh_offset = 0; | |
2435 | ||
b34976b6 | 2436 | return TRUE; |
23bc299b MM |
2437 | } |
2438 | ||
94be91de JB |
2439 | /* Return the default section type based on the passed in section flags. */ |
2440 | ||
2441 | int | |
2442 | bfd_elf_get_default_section_type (flagword flags) | |
2443 | { | |
2444 | if ((flags & SEC_ALLOC) != 0 | |
2445 | && ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0 | |
2446 | || (flags & SEC_NEVER_LOAD) != 0)) | |
2447 | return SHT_NOBITS; | |
2448 | return SHT_PROGBITS; | |
2449 | } | |
2450 | ||
252b5132 RH |
2451 | /* Set up an ELF internal section header for a section. */ |
2452 | ||
252b5132 | 2453 | static void |
217aa764 | 2454 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2455 | { |
9c5bfbb7 | 2456 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2457 | bfd_boolean *failedptr = failedptrarg; |
252b5132 | 2458 | Elf_Internal_Shdr *this_hdr; |
0414f35b | 2459 | unsigned int sh_type; |
252b5132 RH |
2460 | |
2461 | if (*failedptr) | |
2462 | { | |
2463 | /* We already failed; just get out of the bfd_map_over_sections | |
08a40648 | 2464 | loop. */ |
252b5132 RH |
2465 | return; |
2466 | } | |
2467 | ||
2468 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2469 | ||
e57b5356 AM |
2470 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2471 | asect->name, FALSE); | |
2472 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2473 | { |
b34976b6 | 2474 | *failedptr = TRUE; |
252b5132 RH |
2475 | return; |
2476 | } | |
2477 | ||
a4d8e49b | 2478 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
2479 | |
2480 | if ((asect->flags & SEC_ALLOC) != 0 | |
2481 | || asect->user_set_vma) | |
2482 | this_hdr->sh_addr = asect->vma; | |
2483 | else | |
2484 | this_hdr->sh_addr = 0; | |
2485 | ||
2486 | this_hdr->sh_offset = 0; | |
eea6121a | 2487 | this_hdr->sh_size = asect->size; |
252b5132 | 2488 | this_hdr->sh_link = 0; |
72de5009 | 2489 | this_hdr->sh_addralign = (bfd_vma) 1 << asect->alignment_power; |
252b5132 RH |
2490 | /* The sh_entsize and sh_info fields may have been set already by |
2491 | copy_private_section_data. */ | |
2492 | ||
2493 | this_hdr->bfd_section = asect; | |
2494 | this_hdr->contents = NULL; | |
2495 | ||
3cddba1e L |
2496 | /* If the section type is unspecified, we set it based on |
2497 | asect->flags. */ | |
98ece1b3 AM |
2498 | if ((asect->flags & SEC_GROUP) != 0) |
2499 | sh_type = SHT_GROUP; | |
98ece1b3 | 2500 | else |
94be91de | 2501 | sh_type = bfd_elf_get_default_section_type (asect->flags); |
98ece1b3 | 2502 | |
3cddba1e | 2503 | if (this_hdr->sh_type == SHT_NULL) |
98ece1b3 AM |
2504 | this_hdr->sh_type = sh_type; |
2505 | else if (this_hdr->sh_type == SHT_NOBITS | |
2506 | && sh_type == SHT_PROGBITS | |
2507 | && (asect->flags & SEC_ALLOC) != 0) | |
3cddba1e | 2508 | { |
98ece1b3 AM |
2509 | /* Warn if we are changing a NOBITS section to PROGBITS, but |
2510 | allow the link to proceed. This can happen when users link | |
2511 | non-bss input sections to bss output sections, or emit data | |
2512 | to a bss output section via a linker script. */ | |
2513 | (*_bfd_error_handler) | |
58f0869b | 2514 | (_("warning: section `%A' type changed to PROGBITS"), asect); |
98ece1b3 | 2515 | this_hdr->sh_type = sh_type; |
3cddba1e L |
2516 | } |
2517 | ||
2f89ff8d | 2518 | switch (this_hdr->sh_type) |
252b5132 | 2519 | { |
2f89ff8d | 2520 | default: |
2f89ff8d L |
2521 | break; |
2522 | ||
2523 | case SHT_STRTAB: | |
2524 | case SHT_INIT_ARRAY: | |
2525 | case SHT_FINI_ARRAY: | |
2526 | case SHT_PREINIT_ARRAY: | |
2527 | case SHT_NOTE: | |
2528 | case SHT_NOBITS: | |
2529 | case SHT_PROGBITS: | |
2530 | break; | |
2531 | ||
2532 | case SHT_HASH: | |
c7ac6ff8 | 2533 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2534 | break; |
5de3bf90 | 2535 | |
2f89ff8d | 2536 | case SHT_DYNSYM: |
252b5132 | 2537 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2538 | break; |
2539 | ||
2540 | case SHT_DYNAMIC: | |
252b5132 | 2541 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2542 | break; |
2543 | ||
2544 | case SHT_RELA: | |
2545 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2546 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2547 | break; | |
2548 | ||
2549 | case SHT_REL: | |
2550 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2551 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2552 | break; | |
2553 | ||
2554 | case SHT_GNU_versym: | |
252b5132 | 2555 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2556 | break; |
2557 | ||
2558 | case SHT_GNU_verdef: | |
252b5132 RH |
2559 | this_hdr->sh_entsize = 0; |
2560 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2561 | cverdefs. The linker will set cverdefs, but sh_info will be |
2562 | zero. */ | |
252b5132 RH |
2563 | if (this_hdr->sh_info == 0) |
2564 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2565 | else | |
2566 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2567 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2568 | break; |
2569 | ||
2570 | case SHT_GNU_verneed: | |
252b5132 RH |
2571 | this_hdr->sh_entsize = 0; |
2572 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2573 | cverrefs. The linker will set cverrefs, but sh_info will be |
2574 | zero. */ | |
252b5132 RH |
2575 | if (this_hdr->sh_info == 0) |
2576 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2577 | else | |
2578 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2579 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2580 | break; |
2581 | ||
2582 | case SHT_GROUP: | |
1783205a | 2583 | this_hdr->sh_entsize = GRP_ENTRY_SIZE; |
2f89ff8d | 2584 | break; |
fdc90cb4 JJ |
2585 | |
2586 | case SHT_GNU_HASH: | |
2587 | this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4; | |
2588 | break; | |
dbb410c3 | 2589 | } |
252b5132 RH |
2590 | |
2591 | if ((asect->flags & SEC_ALLOC) != 0) | |
2592 | this_hdr->sh_flags |= SHF_ALLOC; | |
2593 | if ((asect->flags & SEC_READONLY) == 0) | |
2594 | this_hdr->sh_flags |= SHF_WRITE; | |
2595 | if ((asect->flags & SEC_CODE) != 0) | |
2596 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2597 | if ((asect->flags & SEC_MERGE) != 0) |
2598 | { | |
2599 | this_hdr->sh_flags |= SHF_MERGE; | |
2600 | this_hdr->sh_entsize = asect->entsize; | |
2601 | if ((asect->flags & SEC_STRINGS) != 0) | |
2602 | this_hdr->sh_flags |= SHF_STRINGS; | |
2603 | } | |
1126897b | 2604 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2605 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2606 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2607 | { |
2608 | this_hdr->sh_flags |= SHF_TLS; | |
3a800eb9 AM |
2609 | if (asect->size == 0 |
2610 | && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
704afa60 | 2611 | { |
3a800eb9 | 2612 | struct bfd_link_order *o = asect->map_tail.link_order; |
b34976b6 | 2613 | |
704afa60 | 2614 | this_hdr->sh_size = 0; |
3a800eb9 AM |
2615 | if (o != NULL) |
2616 | { | |
704afa60 | 2617 | this_hdr->sh_size = o->offset + o->size; |
3a800eb9 AM |
2618 | if (this_hdr->sh_size != 0) |
2619 | this_hdr->sh_type = SHT_NOBITS; | |
2620 | } | |
704afa60 JJ |
2621 | } |
2622 | } | |
252b5132 RH |
2623 | |
2624 | /* Check for processor-specific section types. */ | |
0414f35b | 2625 | sh_type = this_hdr->sh_type; |
e1fddb6b AO |
2626 | if (bed->elf_backend_fake_sections |
2627 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2628 | *failedptr = TRUE; |
252b5132 | 2629 | |
42bb2e33 | 2630 | if (sh_type == SHT_NOBITS && asect->size != 0) |
0414f35b AM |
2631 | { |
2632 | /* Don't change the header type from NOBITS if we are being | |
42bb2e33 | 2633 | called for objcopy --only-keep-debug. */ |
0414f35b AM |
2634 | this_hdr->sh_type = sh_type; |
2635 | } | |
2636 | ||
252b5132 | 2637 | /* If the section has relocs, set up a section header for the |
23bc299b MM |
2638 | SHT_REL[A] section. If two relocation sections are required for |
2639 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2640 | create the other. */ |
23bc299b | 2641 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2642 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2643 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2644 | asect, |
68bfbfcc | 2645 | asect->use_rela_p)) |
b34976b6 | 2646 | *failedptr = TRUE; |
252b5132 RH |
2647 | } |
2648 | ||
bcacc0f5 AM |
2649 | /* Fill in the contents of a SHT_GROUP section. Called from |
2650 | _bfd_elf_compute_section_file_positions for gas, objcopy, and | |
2651 | when ELF targets use the generic linker, ld. Called for ld -r | |
2652 | from bfd_elf_final_link. */ | |
dbb410c3 | 2653 | |
1126897b | 2654 | void |
217aa764 | 2655 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2656 | { |
217aa764 | 2657 | bfd_boolean *failedptr = failedptrarg; |
9dce4196 | 2658 | asection *elt, *first; |
dbb410c3 | 2659 | unsigned char *loc; |
b34976b6 | 2660 | bfd_boolean gas; |
dbb410c3 | 2661 | |
7e4111ad L |
2662 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2663 | elfxx-ia64.c. */ | |
2664 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2665 | || *failedptr) |
2666 | return; | |
2667 | ||
bcacc0f5 AM |
2668 | if (elf_section_data (sec)->this_hdr.sh_info == 0) |
2669 | { | |
2670 | unsigned long symindx = 0; | |
2671 | ||
2672 | /* elf_group_id will have been set up by objcopy and the | |
2673 | generic linker. */ | |
2674 | if (elf_group_id (sec) != NULL) | |
2675 | symindx = elf_group_id (sec)->udata.i; | |
1126897b | 2676 | |
bcacc0f5 AM |
2677 | if (symindx == 0) |
2678 | { | |
2679 | /* If called from the assembler, swap_out_syms will have set up | |
2680 | elf_section_syms. */ | |
2681 | BFD_ASSERT (elf_section_syms (abfd) != NULL); | |
2682 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2683 | } | |
2684 | elf_section_data (sec)->this_hdr.sh_info = symindx; | |
2685 | } | |
2686 | else if (elf_section_data (sec)->this_hdr.sh_info == (unsigned int) -2) | |
1126897b | 2687 | { |
bcacc0f5 AM |
2688 | /* The ELF backend linker sets sh_info to -2 when the group |
2689 | signature symbol is global, and thus the index can't be | |
2690 | set until all local symbols are output. */ | |
2691 | asection *igroup = elf_sec_group (elf_next_in_group (sec)); | |
2692 | struct bfd_elf_section_data *sec_data = elf_section_data (igroup); | |
2693 | unsigned long symndx = sec_data->this_hdr.sh_info; | |
2694 | unsigned long extsymoff = 0; | |
2695 | struct elf_link_hash_entry *h; | |
2696 | ||
2697 | if (!elf_bad_symtab (igroup->owner)) | |
2698 | { | |
2699 | Elf_Internal_Shdr *symtab_hdr; | |
2700 | ||
2701 | symtab_hdr = &elf_tdata (igroup->owner)->symtab_hdr; | |
2702 | extsymoff = symtab_hdr->sh_info; | |
2703 | } | |
2704 | h = elf_sym_hashes (igroup->owner)[symndx - extsymoff]; | |
2705 | while (h->root.type == bfd_link_hash_indirect | |
2706 | || h->root.type == bfd_link_hash_warning) | |
2707 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2708 | ||
2709 | elf_section_data (sec)->this_hdr.sh_info = h->indx; | |
1126897b | 2710 | } |
dbb410c3 | 2711 | |
1126897b | 2712 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2713 | gas = TRUE; |
dbb410c3 AM |
2714 | if (sec->contents == NULL) |
2715 | { | |
b34976b6 | 2716 | gas = FALSE; |
eea6121a | 2717 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2718 | |
2719 | /* Arrange for the section to be written out. */ | |
2720 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2721 | if (sec->contents == NULL) |
2722 | { | |
b34976b6 | 2723 | *failedptr = TRUE; |
dbb410c3 AM |
2724 | return; |
2725 | } | |
2726 | } | |
2727 | ||
eea6121a | 2728 | loc = sec->contents + sec->size; |
dbb410c3 | 2729 | |
9dce4196 AM |
2730 | /* Get the pointer to the first section in the group that gas |
2731 | squirreled away here. objcopy arranges for this to be set to the | |
2732 | start of the input section group. */ | |
2733 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2734 | |
2735 | /* First element is a flag word. Rest of section is elf section | |
2736 | indices for all the sections of the group. Write them backwards | |
2737 | just to keep the group in the same order as given in .section | |
2738 | directives, not that it matters. */ | |
2739 | while (elt != NULL) | |
2740 | { | |
9dce4196 AM |
2741 | asection *s; |
2742 | unsigned int idx; | |
2743 | ||
9dce4196 | 2744 | s = elt; |
01e1a5bc NC |
2745 | if (! elf_discarded_section (s)) |
2746 | { | |
2747 | loc -= 4; | |
2748 | if (!gas) | |
2749 | s = s->output_section; | |
2750 | idx = 0; | |
2751 | if (s != NULL) | |
2752 | idx = elf_section_data (s)->this_idx; | |
2753 | H_PUT_32 (abfd, idx, loc); | |
2754 | } | |
945906ff | 2755 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2756 | if (elt == first) |
2757 | break; | |
dbb410c3 AM |
2758 | } |
2759 | ||
3d7f7666 | 2760 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2761 | abort (); |
dbb410c3 | 2762 | |
9dce4196 | 2763 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2764 | } |
2765 | ||
252b5132 RH |
2766 | /* Assign all ELF section numbers. The dummy first section is handled here |
2767 | too. The link/info pointers for the standard section types are filled | |
2768 | in here too, while we're at it. */ | |
2769 | ||
b34976b6 | 2770 | static bfd_boolean |
da9f89d4 | 2771 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2772 | { |
2773 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2774 | asection *sec; | |
2b0f7ef9 | 2775 | unsigned int section_number, secn; |
252b5132 | 2776 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 2777 | struct bfd_elf_section_data *d; |
3516e984 | 2778 | bfd_boolean need_symtab; |
252b5132 RH |
2779 | |
2780 | section_number = 1; | |
2781 | ||
2b0f7ef9 JJ |
2782 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2783 | ||
da9f89d4 L |
2784 | /* SHT_GROUP sections are in relocatable files only. */ |
2785 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2786 | { |
da9f89d4 | 2787 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 2788 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 2789 | { |
5daa8fe7 | 2790 | d = elf_section_data (sec); |
da9f89d4 L |
2791 | |
2792 | if (d->this_hdr.sh_type == SHT_GROUP) | |
08a40648 | 2793 | { |
5daa8fe7 | 2794 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
2795 | { |
2796 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 2797 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 2798 | abfd->section_count--; |
da9f89d4 | 2799 | } |
08a40648 | 2800 | else |
4fbb74a6 | 2801 | d->this_idx = section_number++; |
da9f89d4 | 2802 | } |
47cc2cf5 PB |
2803 | } |
2804 | } | |
2805 | ||
2806 | for (sec = abfd->sections; sec; sec = sec->next) | |
2807 | { | |
2808 | d = elf_section_data (sec); | |
2809 | ||
2810 | if (d->this_hdr.sh_type != SHT_GROUP) | |
4fbb74a6 | 2811 | d->this_idx = section_number++; |
2b0f7ef9 | 2812 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
2813 | if ((sec->flags & SEC_RELOC) == 0) |
2814 | d->rel_idx = 0; | |
2815 | else | |
2b0f7ef9 JJ |
2816 | { |
2817 | d->rel_idx = section_number++; | |
2818 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
2819 | } | |
23bc299b MM |
2820 | |
2821 | if (d->rel_hdr2) | |
2b0f7ef9 JJ |
2822 | { |
2823 | d->rel_idx2 = section_number++; | |
2824 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
2825 | } | |
23bc299b MM |
2826 | else |
2827 | d->rel_idx2 = 0; | |
252b5132 RH |
2828 | } |
2829 | ||
2830 | t->shstrtab_section = section_number++; | |
2b0f7ef9 | 2831 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2832 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 | 2833 | |
3516e984 L |
2834 | need_symtab = (bfd_get_symcount (abfd) > 0 |
2835 | || (link_info == NULL | |
2836 | && ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC)) | |
2837 | == HAS_RELOC))); | |
2838 | if (need_symtab) | |
252b5132 RH |
2839 | { |
2840 | t->symtab_section = section_number++; | |
2b0f7ef9 | 2841 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
4fbb74a6 | 2842 | if (section_number > ((SHN_LORESERVE - 2) & 0xFFFF)) |
9ad5cbcf | 2843 | { |
9ad5cbcf AM |
2844 | t->symtab_shndx_section = section_number++; |
2845 | t->symtab_shndx_hdr.sh_name | |
2846 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 2847 | ".symtab_shndx", FALSE); |
9ad5cbcf | 2848 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 2849 | return FALSE; |
9ad5cbcf | 2850 | } |
252b5132 | 2851 | t->strtab_section = section_number++; |
2b0f7ef9 | 2852 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
2853 | } |
2854 | ||
2b0f7ef9 JJ |
2855 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
2856 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
2857 | |
2858 | elf_numsections (abfd) = section_number; | |
252b5132 RH |
2859 | elf_elfheader (abfd)->e_shnum = section_number; |
2860 | ||
2861 | /* Set up the list of section header pointers, in agreement with the | |
2862 | indices. */ | |
d0fb9a8d | 2863 | i_shdrp = bfd_zalloc2 (abfd, section_number, sizeof (Elf_Internal_Shdr *)); |
252b5132 | 2864 | if (i_shdrp == NULL) |
b34976b6 | 2865 | return FALSE; |
252b5132 | 2866 | |
d0fb9a8d | 2867 | i_shdrp[0] = bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr)); |
252b5132 RH |
2868 | if (i_shdrp[0] == NULL) |
2869 | { | |
2870 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 2871 | return FALSE; |
252b5132 | 2872 | } |
252b5132 RH |
2873 | |
2874 | elf_elfsections (abfd) = i_shdrp; | |
2875 | ||
2876 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
3516e984 | 2877 | if (need_symtab) |
252b5132 RH |
2878 | { |
2879 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
4fbb74a6 | 2880 | if (elf_numsections (abfd) > (SHN_LORESERVE & 0xFFFF)) |
9ad5cbcf AM |
2881 | { |
2882 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
2883 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
2884 | } | |
252b5132 RH |
2885 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
2886 | t->symtab_hdr.sh_link = t->strtab_section; | |
2887 | } | |
38ce5b11 | 2888 | |
252b5132 RH |
2889 | for (sec = abfd->sections; sec; sec = sec->next) |
2890 | { | |
2891 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
2892 | asection *s; | |
2893 | const char *name; | |
2894 | ||
2895 | i_shdrp[d->this_idx] = &d->this_hdr; | |
2896 | if (d->rel_idx != 0) | |
2897 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
2898 | if (d->rel_idx2 != 0) |
2899 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
2900 | |
2901 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
2902 | ||
2903 | /* sh_link of a reloc section is the section index of the symbol | |
2904 | table. sh_info is the section index of the section to which | |
2905 | the relocation entries apply. */ | |
2906 | if (d->rel_idx != 0) | |
2907 | { | |
2908 | d->rel_hdr.sh_link = t->symtab_section; | |
2909 | d->rel_hdr.sh_info = d->this_idx; | |
2910 | } | |
23bc299b MM |
2911 | if (d->rel_idx2 != 0) |
2912 | { | |
2913 | d->rel_hdr2->sh_link = t->symtab_section; | |
2914 | d->rel_hdr2->sh_info = d->this_idx; | |
2915 | } | |
252b5132 | 2916 | |
38ce5b11 L |
2917 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
2918 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
2919 | { | |
2920 | s = elf_linked_to_section (sec); | |
2921 | if (s) | |
38ce5b11 | 2922 | { |
f2876037 | 2923 | /* elf_linked_to_section points to the input section. */ |
ccd2ec6a | 2924 | if (link_info != NULL) |
38ce5b11 | 2925 | { |
f2876037 | 2926 | /* Check discarded linkonce section. */ |
ccd2ec6a | 2927 | if (elf_discarded_section (s)) |
38ce5b11 | 2928 | { |
ccd2ec6a L |
2929 | asection *kept; |
2930 | (*_bfd_error_handler) | |
2931 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
2932 | abfd, d->this_hdr.bfd_section, | |
2933 | s, s->owner); | |
2934 | /* Point to the kept section if it has the same | |
2935 | size as the discarded one. */ | |
c0f00686 | 2936 | kept = _bfd_elf_check_kept_section (s, link_info); |
ccd2ec6a | 2937 | if (kept == NULL) |
185d09ad | 2938 | { |
ccd2ec6a L |
2939 | bfd_set_error (bfd_error_bad_value); |
2940 | return FALSE; | |
185d09ad | 2941 | } |
ccd2ec6a | 2942 | s = kept; |
38ce5b11 | 2943 | } |
e424ecc8 | 2944 | |
ccd2ec6a L |
2945 | s = s->output_section; |
2946 | BFD_ASSERT (s != NULL); | |
38ce5b11 | 2947 | } |
f2876037 L |
2948 | else |
2949 | { | |
2950 | /* Handle objcopy. */ | |
2951 | if (s->output_section == NULL) | |
2952 | { | |
2953 | (*_bfd_error_handler) | |
2954 | (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"), | |
2955 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
2956 | bfd_set_error (bfd_error_bad_value); | |
2957 | return FALSE; | |
2958 | } | |
2959 | s = s->output_section; | |
2960 | } | |
ccd2ec6a L |
2961 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; |
2962 | } | |
2963 | else | |
2964 | { | |
2965 | /* PR 290: | |
2966 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
2967 | SHF_LINK_ORDER. But it doesn't set the sh_link or | |
2968 | sh_info fields. Hence we could get the situation | |
08a40648 | 2969 | where s is NULL. */ |
ccd2ec6a L |
2970 | const struct elf_backend_data *bed |
2971 | = get_elf_backend_data (abfd); | |
2972 | if (bed->link_order_error_handler) | |
2973 | bed->link_order_error_handler | |
2974 | (_("%B: warning: sh_link not set for section `%A'"), | |
2975 | abfd, sec); | |
38ce5b11 L |
2976 | } |
2977 | } | |
2978 | ||
252b5132 RH |
2979 | switch (d->this_hdr.sh_type) |
2980 | { | |
2981 | case SHT_REL: | |
2982 | case SHT_RELA: | |
2983 | /* A reloc section which we are treating as a normal BFD | |
2984 | section. sh_link is the section index of the symbol | |
2985 | table. sh_info is the section index of the section to | |
2986 | which the relocation entries apply. We assume that an | |
2987 | allocated reloc section uses the dynamic symbol table. | |
2988 | FIXME: How can we be sure? */ | |
2989 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
2990 | if (s != NULL) | |
2991 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2992 | ||
2993 | /* We look up the section the relocs apply to by name. */ | |
2994 | name = sec->name; | |
2995 | if (d->this_hdr.sh_type == SHT_REL) | |
2996 | name += 4; | |
2997 | else | |
2998 | name += 5; | |
2999 | s = bfd_get_section_by_name (abfd, name); | |
3000 | if (s != NULL) | |
3001 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3002 | break; | |
3003 | ||
3004 | case SHT_STRTAB: | |
3005 | /* We assume that a section named .stab*str is a stabs | |
3006 | string section. We look for a section with the same name | |
3007 | but without the trailing ``str'', and set its sh_link | |
3008 | field to point to this section. */ | |
0112cd26 | 3009 | if (CONST_STRNEQ (sec->name, ".stab") |
252b5132 RH |
3010 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) |
3011 | { | |
3012 | size_t len; | |
3013 | char *alc; | |
3014 | ||
3015 | len = strlen (sec->name); | |
217aa764 | 3016 | alc = bfd_malloc (len - 2); |
252b5132 | 3017 | if (alc == NULL) |
b34976b6 | 3018 | return FALSE; |
d4c88bbb | 3019 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3020 | alc[len - 3] = '\0'; |
3021 | s = bfd_get_section_by_name (abfd, alc); | |
3022 | free (alc); | |
3023 | if (s != NULL) | |
3024 | { | |
3025 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3026 | ||
3027 | /* This is a .stab section. */ | |
0594c12d AM |
3028 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3029 | elf_section_data (s)->this_hdr.sh_entsize | |
3030 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3031 | } |
3032 | } | |
3033 | break; | |
3034 | ||
3035 | case SHT_DYNAMIC: | |
3036 | case SHT_DYNSYM: | |
3037 | case SHT_GNU_verneed: | |
3038 | case SHT_GNU_verdef: | |
3039 | /* sh_link is the section header index of the string table | |
3040 | used for the dynamic entries, or the symbol table, or the | |
3041 | version strings. */ | |
3042 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3043 | if (s != NULL) | |
3044 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3045 | break; | |
3046 | ||
7f1204bb JJ |
3047 | case SHT_GNU_LIBLIST: |
3048 | /* sh_link is the section header index of the prelink library | |
08a40648 AM |
3049 | list used for the dynamic entries, or the symbol table, or |
3050 | the version strings. */ | |
7f1204bb JJ |
3051 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) |
3052 | ? ".dynstr" : ".gnu.libstr"); | |
3053 | if (s != NULL) | |
3054 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3055 | break; | |
3056 | ||
252b5132 | 3057 | case SHT_HASH: |
fdc90cb4 | 3058 | case SHT_GNU_HASH: |
252b5132 RH |
3059 | case SHT_GNU_versym: |
3060 | /* sh_link is the section header index of the symbol table | |
3061 | this hash table or version table is for. */ | |
3062 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3063 | if (s != NULL) | |
3064 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3065 | break; | |
dbb410c3 AM |
3066 | |
3067 | case SHT_GROUP: | |
3068 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3069 | } |
3070 | } | |
3071 | ||
2b0f7ef9 | 3072 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3073 | if (i_shdrp[secn] == NULL) |
3074 | i_shdrp[secn] = i_shdrp[0]; | |
3075 | else | |
3076 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3077 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3078 | return TRUE; |
252b5132 RH |
3079 | } |
3080 | ||
3081 | /* Map symbol from it's internal number to the external number, moving | |
3082 | all local symbols to be at the head of the list. */ | |
3083 | ||
5372391b | 3084 | static bfd_boolean |
217aa764 | 3085 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3086 | { |
3087 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3088 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3089 | if (bed->elf_backend_sym_is_global) |
3090 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 | 3091 | |
e47bf690 | 3092 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0 |
252b5132 RH |
3093 | || bfd_is_und_section (bfd_get_section (sym)) |
3094 | || bfd_is_com_section (bfd_get_section (sym))); | |
3095 | } | |
3096 | ||
5372391b | 3097 | /* Don't output section symbols for sections that are not going to be |
0f0a5e58 | 3098 | output. */ |
5372391b AM |
3099 | |
3100 | static bfd_boolean | |
3101 | ignore_section_sym (bfd *abfd, asymbol *sym) | |
3102 | { | |
3103 | return ((sym->flags & BSF_SECTION_SYM) != 0 | |
0f0a5e58 AM |
3104 | && !(sym->section->owner == abfd |
3105 | || (sym->section->output_section->owner == abfd | |
3106 | && sym->section->output_offset == 0))); | |
5372391b AM |
3107 | } |
3108 | ||
b34976b6 | 3109 | static bfd_boolean |
217aa764 | 3110 | elf_map_symbols (bfd *abfd) |
252b5132 | 3111 | { |
dc810e39 | 3112 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3113 | asymbol **syms = bfd_get_outsymbols (abfd); |
3114 | asymbol **sect_syms; | |
dc810e39 AM |
3115 | unsigned int num_locals = 0; |
3116 | unsigned int num_globals = 0; | |
3117 | unsigned int num_locals2 = 0; | |
3118 | unsigned int num_globals2 = 0; | |
252b5132 | 3119 | int max_index = 0; |
dc810e39 | 3120 | unsigned int idx; |
252b5132 RH |
3121 | asection *asect; |
3122 | asymbol **new_syms; | |
252b5132 RH |
3123 | |
3124 | #ifdef DEBUG | |
3125 | fprintf (stderr, "elf_map_symbols\n"); | |
3126 | fflush (stderr); | |
3127 | #endif | |
3128 | ||
252b5132 RH |
3129 | for (asect = abfd->sections; asect; asect = asect->next) |
3130 | { | |
3131 | if (max_index < asect->index) | |
3132 | max_index = asect->index; | |
3133 | } | |
3134 | ||
3135 | max_index++; | |
d0fb9a8d | 3136 | sect_syms = bfd_zalloc2 (abfd, max_index, sizeof (asymbol *)); |
252b5132 | 3137 | if (sect_syms == NULL) |
b34976b6 | 3138 | return FALSE; |
252b5132 | 3139 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3140 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3141 | |
079e9a2f AM |
3142 | /* Init sect_syms entries for any section symbols we have already |
3143 | decided to output. */ | |
252b5132 RH |
3144 | for (idx = 0; idx < symcount; idx++) |
3145 | { | |
dc810e39 | 3146 | asymbol *sym = syms[idx]; |
c044fabd | 3147 | |
252b5132 | 3148 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
0f0a5e58 | 3149 | && sym->value == 0 |
5372391b | 3150 | && !ignore_section_sym (abfd, sym)) |
252b5132 | 3151 | { |
5372391b | 3152 | asection *sec = sym->section; |
252b5132 | 3153 | |
5372391b AM |
3154 | if (sec->owner != abfd) |
3155 | sec = sec->output_section; | |
252b5132 | 3156 | |
5372391b | 3157 | sect_syms[sec->index] = syms[idx]; |
252b5132 RH |
3158 | } |
3159 | } | |
3160 | ||
252b5132 RH |
3161 | /* Classify all of the symbols. */ |
3162 | for (idx = 0; idx < symcount; idx++) | |
3163 | { | |
5372391b AM |
3164 | if (ignore_section_sym (abfd, syms[idx])) |
3165 | continue; | |
252b5132 RH |
3166 | if (!sym_is_global (abfd, syms[idx])) |
3167 | num_locals++; | |
3168 | else | |
3169 | num_globals++; | |
3170 | } | |
079e9a2f | 3171 | |
5372391b | 3172 | /* We will be adding a section symbol for each normal BFD section. Most |
079e9a2f AM |
3173 | sections will already have a section symbol in outsymbols, but |
3174 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3175 | at least in that case. */ | |
252b5132 RH |
3176 | for (asect = abfd->sections; asect; asect = asect->next) |
3177 | { | |
079e9a2f | 3178 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3179 | { |
079e9a2f | 3180 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3181 | num_locals++; |
3182 | else | |
3183 | num_globals++; | |
252b5132 RH |
3184 | } |
3185 | } | |
3186 | ||
3187 | /* Now sort the symbols so the local symbols are first. */ | |
d0fb9a8d | 3188 | new_syms = bfd_alloc2 (abfd, num_locals + num_globals, sizeof (asymbol *)); |
dc810e39 | 3189 | |
252b5132 | 3190 | if (new_syms == NULL) |
b34976b6 | 3191 | return FALSE; |
252b5132 RH |
3192 | |
3193 | for (idx = 0; idx < symcount; idx++) | |
3194 | { | |
3195 | asymbol *sym = syms[idx]; | |
dc810e39 | 3196 | unsigned int i; |
252b5132 | 3197 | |
5372391b AM |
3198 | if (ignore_section_sym (abfd, sym)) |
3199 | continue; | |
252b5132 RH |
3200 | if (!sym_is_global (abfd, sym)) |
3201 | i = num_locals2++; | |
3202 | else | |
3203 | i = num_locals + num_globals2++; | |
3204 | new_syms[i] = sym; | |
3205 | sym->udata.i = i + 1; | |
3206 | } | |
3207 | for (asect = abfd->sections; asect; asect = asect->next) | |
3208 | { | |
079e9a2f | 3209 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3210 | { |
079e9a2f | 3211 | asymbol *sym = asect->symbol; |
dc810e39 | 3212 | unsigned int i; |
252b5132 | 3213 | |
079e9a2f | 3214 | sect_syms[asect->index] = sym; |
252b5132 RH |
3215 | if (!sym_is_global (abfd, sym)) |
3216 | i = num_locals2++; | |
3217 | else | |
3218 | i = num_locals + num_globals2++; | |
3219 | new_syms[i] = sym; | |
3220 | sym->udata.i = i + 1; | |
3221 | } | |
3222 | } | |
3223 | ||
3224 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3225 | ||
3226 | elf_num_locals (abfd) = num_locals; | |
3227 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3228 | return TRUE; |
252b5132 RH |
3229 | } |
3230 | ||
3231 | /* Align to the maximum file alignment that could be required for any | |
3232 | ELF data structure. */ | |
3233 | ||
268b6b39 | 3234 | static inline file_ptr |
217aa764 | 3235 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3236 | { |
3237 | return (off + align - 1) & ~(align - 1); | |
3238 | } | |
3239 | ||
3240 | /* Assign a file position to a section, optionally aligning to the | |
3241 | required section alignment. */ | |
3242 | ||
217aa764 AM |
3243 | file_ptr |
3244 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3245 | file_ptr offset, | |
3246 | bfd_boolean align) | |
252b5132 | 3247 | { |
72de5009 AM |
3248 | if (align && i_shdrp->sh_addralign > 1) |
3249 | offset = BFD_ALIGN (offset, i_shdrp->sh_addralign); | |
252b5132 RH |
3250 | i_shdrp->sh_offset = offset; |
3251 | if (i_shdrp->bfd_section != NULL) | |
3252 | i_shdrp->bfd_section->filepos = offset; | |
3253 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3254 | offset += i_shdrp->sh_size; | |
3255 | return offset; | |
3256 | } | |
3257 | ||
3258 | /* Compute the file positions we are going to put the sections at, and | |
3259 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3260 | is not NULL, this is being called by the ELF backend linker. */ | |
3261 | ||
b34976b6 | 3262 | bfd_boolean |
217aa764 AM |
3263 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3264 | struct bfd_link_info *link_info) | |
252b5132 | 3265 | { |
9c5bfbb7 | 3266 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3267 | bfd_boolean failed; |
4b6c0f2f | 3268 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 | 3269 | Elf_Internal_Shdr *shstrtab_hdr; |
3516e984 | 3270 | bfd_boolean need_symtab; |
252b5132 RH |
3271 | |
3272 | if (abfd->output_has_begun) | |
b34976b6 | 3273 | return TRUE; |
252b5132 RH |
3274 | |
3275 | /* Do any elf backend specific processing first. */ | |
3276 | if (bed->elf_backend_begin_write_processing) | |
3277 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3278 | ||
3279 | if (! prep_headers (abfd)) | |
b34976b6 | 3280 | return FALSE; |
252b5132 | 3281 | |
e6c51ed4 NC |
3282 | /* Post process the headers if necessary. */ |
3283 | if (bed->elf_backend_post_process_headers) | |
3284 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3285 | ||
b34976b6 | 3286 | failed = FALSE; |
252b5132 RH |
3287 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3288 | if (failed) | |
b34976b6 | 3289 | return FALSE; |
252b5132 | 3290 | |
da9f89d4 | 3291 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3292 | return FALSE; |
252b5132 RH |
3293 | |
3294 | /* The backend linker builds symbol table information itself. */ | |
3516e984 L |
3295 | need_symtab = (link_info == NULL |
3296 | && (bfd_get_symcount (abfd) > 0 | |
3297 | || ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC)) | |
3298 | == HAS_RELOC))); | |
3299 | if (need_symtab) | |
252b5132 RH |
3300 | { |
3301 | /* Non-zero if doing a relocatable link. */ | |
3302 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3303 | ||
3304 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3305 | return FALSE; |
252b5132 RH |
3306 | } |
3307 | ||
1126897b | 3308 | if (link_info == NULL) |
dbb410c3 | 3309 | { |
1126897b | 3310 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3311 | if (failed) |
b34976b6 | 3312 | return FALSE; |
dbb410c3 AM |
3313 | } |
3314 | ||
252b5132 RH |
3315 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3316 | /* sh_name was set in prep_headers. */ | |
3317 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3318 | shstrtab_hdr->sh_flags = 0; | |
3319 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3320 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3321 | shstrtab_hdr->sh_entsize = 0; |
3322 | shstrtab_hdr->sh_link = 0; | |
3323 | shstrtab_hdr->sh_info = 0; | |
3324 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3325 | shstrtab_hdr->sh_addralign = 1; | |
3326 | ||
c84fca4d | 3327 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3328 | return FALSE; |
252b5132 | 3329 | |
3516e984 | 3330 | if (need_symtab) |
252b5132 RH |
3331 | { |
3332 | file_ptr off; | |
3333 | Elf_Internal_Shdr *hdr; | |
3334 | ||
3335 | off = elf_tdata (abfd)->next_file_pos; | |
3336 | ||
3337 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3338 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3339 | |
9ad5cbcf AM |
3340 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3341 | if (hdr->sh_size != 0) | |
b34976b6 | 3342 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3343 | |
252b5132 | 3344 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3345 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3346 | |
3347 | elf_tdata (abfd)->next_file_pos = off; | |
3348 | ||
3349 | /* Now that we know where the .strtab section goes, write it | |
08a40648 | 3350 | out. */ |
252b5132 RH |
3351 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
3352 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3353 | return FALSE; |
252b5132 RH |
3354 | _bfd_stringtab_free (strtab); |
3355 | } | |
3356 | ||
b34976b6 | 3357 | abfd->output_has_begun = TRUE; |
252b5132 | 3358 | |
b34976b6 | 3359 | return TRUE; |
252b5132 RH |
3360 | } |
3361 | ||
8ded5a0f AM |
3362 | /* Make an initial estimate of the size of the program header. If we |
3363 | get the number wrong here, we'll redo section placement. */ | |
3364 | ||
3365 | static bfd_size_type | |
3366 | get_program_header_size (bfd *abfd, struct bfd_link_info *info) | |
3367 | { | |
3368 | size_t segs; | |
3369 | asection *s; | |
2b05f1b7 | 3370 | const struct elf_backend_data *bed; |
8ded5a0f AM |
3371 | |
3372 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
3373 | and one for data. */ | |
3374 | segs = 2; | |
3375 | ||
3376 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3377 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3378 | { | |
3379 | /* If we have a loadable interpreter section, we need a | |
3380 | PT_INTERP segment. In this case, assume we also need a | |
3381 | PT_PHDR segment, although that may not be true for all | |
3382 | targets. */ | |
3383 | segs += 2; | |
3384 | } | |
3385 | ||
3386 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
3387 | { | |
3388 | /* We need a PT_DYNAMIC segment. */ | |
3389 | ++segs; | |
f210dcff | 3390 | } |
08a40648 | 3391 | |
ceae84aa | 3392 | if (info != NULL && info->relro) |
f210dcff L |
3393 | { |
3394 | /* We need a PT_GNU_RELRO segment. */ | |
3395 | ++segs; | |
8ded5a0f AM |
3396 | } |
3397 | ||
3398 | if (elf_tdata (abfd)->eh_frame_hdr) | |
3399 | { | |
3400 | /* We need a PT_GNU_EH_FRAME segment. */ | |
3401 | ++segs; | |
3402 | } | |
3403 | ||
2b05f1b7 | 3404 | if (elf_tdata (abfd)->stack_flags) |
8ded5a0f | 3405 | { |
2b05f1b7 L |
3406 | /* We need a PT_GNU_STACK segment. */ |
3407 | ++segs; | |
3408 | } | |
94b11780 | 3409 | |
2b05f1b7 L |
3410 | for (s = abfd->sections; s != NULL; s = s->next) |
3411 | { | |
8ded5a0f | 3412 | if ((s->flags & SEC_LOAD) != 0 |
0112cd26 | 3413 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f AM |
3414 | { |
3415 | /* We need a PT_NOTE segment. */ | |
3416 | ++segs; | |
1c5265b5 JJ |
3417 | /* Try to create just one PT_NOTE segment |
3418 | for all adjacent loadable .note* sections. | |
3419 | gABI requires that within a PT_NOTE segment | |
3420 | (and also inside of each SHT_NOTE section) | |
3421 | each note is padded to a multiple of 4 size, | |
3422 | so we check whether the sections are correctly | |
3423 | aligned. */ | |
3424 | if (s->alignment_power == 2) | |
3425 | while (s->next != NULL | |
3426 | && s->next->alignment_power == 2 | |
3427 | && (s->next->flags & SEC_LOAD) != 0 | |
3428 | && CONST_STRNEQ (s->next->name, ".note")) | |
3429 | s = s->next; | |
8ded5a0f AM |
3430 | } |
3431 | } | |
3432 | ||
3433 | for (s = abfd->sections; s != NULL; s = s->next) | |
3434 | { | |
3435 | if (s->flags & SEC_THREAD_LOCAL) | |
3436 | { | |
3437 | /* We need a PT_TLS segment. */ | |
3438 | ++segs; | |
3439 | break; | |
3440 | } | |
3441 | } | |
3442 | ||
3443 | /* Let the backend count up any program headers it might need. */ | |
2b05f1b7 | 3444 | bed = get_elf_backend_data (abfd); |
8ded5a0f AM |
3445 | if (bed->elf_backend_additional_program_headers) |
3446 | { | |
3447 | int a; | |
3448 | ||
3449 | a = (*bed->elf_backend_additional_program_headers) (abfd, info); | |
3450 | if (a == -1) | |
3451 | abort (); | |
3452 | segs += a; | |
3453 | } | |
3454 | ||
3455 | return segs * bed->s->sizeof_phdr; | |
3456 | } | |
3457 | ||
2ea37f1c NC |
3458 | /* Find the segment that contains the output_section of section. */ |
3459 | ||
3460 | Elf_Internal_Phdr * | |
3461 | _bfd_elf_find_segment_containing_section (bfd * abfd, asection * section) | |
3462 | { | |
3463 | struct elf_segment_map *m; | |
3464 | Elf_Internal_Phdr *p; | |
3465 | ||
3466 | for (m = elf_tdata (abfd)->segment_map, | |
3467 | p = elf_tdata (abfd)->phdr; | |
3468 | m != NULL; | |
3469 | m = m->next, p++) | |
3470 | { | |
3471 | int i; | |
3472 | ||
3473 | for (i = m->count - 1; i >= 0; i--) | |
3474 | if (m->sections[i] == section) | |
3475 | return p; | |
3476 | } | |
3477 | ||
3478 | return NULL; | |
3479 | } | |
3480 | ||
252b5132 RH |
3481 | /* Create a mapping from a set of sections to a program segment. */ |
3482 | ||
217aa764 AM |
3483 | static struct elf_segment_map * |
3484 | make_mapping (bfd *abfd, | |
3485 | asection **sections, | |
3486 | unsigned int from, | |
3487 | unsigned int to, | |
3488 | bfd_boolean phdr) | |
252b5132 RH |
3489 | { |
3490 | struct elf_segment_map *m; | |
3491 | unsigned int i; | |
3492 | asection **hdrpp; | |
dc810e39 | 3493 | bfd_size_type amt; |
252b5132 | 3494 | |
dc810e39 AM |
3495 | amt = sizeof (struct elf_segment_map); |
3496 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3497 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3498 | if (m == NULL) |
3499 | return NULL; | |
3500 | m->next = NULL; | |
3501 | m->p_type = PT_LOAD; | |
3502 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3503 | m->sections[i - from] = *hdrpp; | |
3504 | m->count = to - from; | |
3505 | ||
3506 | if (from == 0 && phdr) | |
3507 | { | |
3508 | /* Include the headers in the first PT_LOAD segment. */ | |
3509 | m->includes_filehdr = 1; | |
3510 | m->includes_phdrs = 1; | |
3511 | } | |
3512 | ||
3513 | return m; | |
3514 | } | |
3515 | ||
229fcec5 MM |
3516 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3517 | on failure. */ | |
3518 | ||
3519 | struct elf_segment_map * | |
3520 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3521 | { | |
3522 | struct elf_segment_map *m; | |
3523 | ||
3524 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3525 | if (m == NULL) | |
3526 | return NULL; | |
3527 | m->next = NULL; | |
3528 | m->p_type = PT_DYNAMIC; | |
3529 | m->count = 1; | |
3530 | m->sections[0] = dynsec; | |
08a40648 | 3531 | |
229fcec5 MM |
3532 | return m; |
3533 | } | |
3534 | ||
8ded5a0f | 3535 | /* Possibly add or remove segments from the segment map. */ |
252b5132 | 3536 | |
b34976b6 | 3537 | static bfd_boolean |
3dea8fca AM |
3538 | elf_modify_segment_map (bfd *abfd, |
3539 | struct bfd_link_info *info, | |
3540 | bfd_boolean remove_empty_load) | |
252b5132 | 3541 | { |
252e386e | 3542 | struct elf_segment_map **m; |
8ded5a0f | 3543 | const struct elf_backend_data *bed; |
252b5132 | 3544 | |
8ded5a0f AM |
3545 | /* The placement algorithm assumes that non allocated sections are |
3546 | not in PT_LOAD segments. We ensure this here by removing such | |
3547 | sections from the segment map. We also remove excluded | |
252e386e AM |
3548 | sections. Finally, any PT_LOAD segment without sections is |
3549 | removed. */ | |
3550 | m = &elf_tdata (abfd)->segment_map; | |
3551 | while (*m) | |
8ded5a0f AM |
3552 | { |
3553 | unsigned int i, new_count; | |
252b5132 | 3554 | |
252e386e | 3555 | for (new_count = 0, i = 0; i < (*m)->count; i++) |
8ded5a0f | 3556 | { |
252e386e AM |
3557 | if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0 |
3558 | && (((*m)->sections[i]->flags & SEC_ALLOC) != 0 | |
3559 | || (*m)->p_type != PT_LOAD)) | |
8ded5a0f | 3560 | { |
252e386e AM |
3561 | (*m)->sections[new_count] = (*m)->sections[i]; |
3562 | new_count++; | |
8ded5a0f AM |
3563 | } |
3564 | } | |
252e386e | 3565 | (*m)->count = new_count; |
252b5132 | 3566 | |
3dea8fca | 3567 | if (remove_empty_load && (*m)->p_type == PT_LOAD && (*m)->count == 0) |
252e386e AM |
3568 | *m = (*m)->next; |
3569 | else | |
3570 | m = &(*m)->next; | |
8ded5a0f | 3571 | } |
252b5132 | 3572 | |
8ded5a0f AM |
3573 | bed = get_elf_backend_data (abfd); |
3574 | if (bed->elf_backend_modify_segment_map != NULL) | |
252b5132 | 3575 | { |
252e386e | 3576 | if (!(*bed->elf_backend_modify_segment_map) (abfd, info)) |
8ded5a0f | 3577 | return FALSE; |
252b5132 | 3578 | } |
252b5132 | 3579 | |
8ded5a0f AM |
3580 | return TRUE; |
3581 | } | |
252b5132 | 3582 | |
8ded5a0f | 3583 | /* Set up a mapping from BFD sections to program segments. */ |
252b5132 | 3584 | |
8ded5a0f AM |
3585 | bfd_boolean |
3586 | _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) | |
3587 | { | |
3588 | unsigned int count; | |
3589 | struct elf_segment_map *m; | |
3590 | asection **sections = NULL; | |
3591 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3dea8fca | 3592 | bfd_boolean no_user_phdrs; |
252b5132 | 3593 | |
3dea8fca AM |
3594 | no_user_phdrs = elf_tdata (abfd)->segment_map == NULL; |
3595 | if (no_user_phdrs && bfd_count_sections (abfd) != 0) | |
252b5132 | 3596 | { |
8ded5a0f AM |
3597 | asection *s; |
3598 | unsigned int i; | |
3599 | struct elf_segment_map *mfirst; | |
3600 | struct elf_segment_map **pm; | |
3601 | asection *last_hdr; | |
3602 | bfd_vma last_size; | |
3603 | unsigned int phdr_index; | |
3604 | bfd_vma maxpagesize; | |
3605 | asection **hdrpp; | |
3606 | bfd_boolean phdr_in_segment = TRUE; | |
3607 | bfd_boolean writable; | |
3608 | int tls_count = 0; | |
3609 | asection *first_tls = NULL; | |
3610 | asection *dynsec, *eh_frame_hdr; | |
3611 | bfd_size_type amt; | |
252b5132 | 3612 | |
8ded5a0f | 3613 | /* Select the allocated sections, and sort them. */ |
252b5132 | 3614 | |
8ded5a0f AM |
3615 | sections = bfd_malloc2 (bfd_count_sections (abfd), sizeof (asection *)); |
3616 | if (sections == NULL) | |
252b5132 | 3617 | goto error_return; |
252b5132 | 3618 | |
8ded5a0f AM |
3619 | i = 0; |
3620 | for (s = abfd->sections; s != NULL; s = s->next) | |
3621 | { | |
3622 | if ((s->flags & SEC_ALLOC) != 0) | |
3623 | { | |
3624 | sections[i] = s; | |
3625 | ++i; | |
3626 | } | |
3627 | } | |
3628 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3629 | count = i; | |
252b5132 | 3630 | |
8ded5a0f | 3631 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); |
252b5132 | 3632 | |
8ded5a0f | 3633 | /* Build the mapping. */ |
252b5132 | 3634 | |
8ded5a0f AM |
3635 | mfirst = NULL; |
3636 | pm = &mfirst; | |
252b5132 | 3637 | |
8ded5a0f AM |
3638 | /* If we have a .interp section, then create a PT_PHDR segment for |
3639 | the program headers and a PT_INTERP segment for the .interp | |
3640 | section. */ | |
3641 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3642 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3643 | { | |
3644 | amt = sizeof (struct elf_segment_map); | |
3645 | m = bfd_zalloc (abfd, amt); | |
3646 | if (m == NULL) | |
3647 | goto error_return; | |
3648 | m->next = NULL; | |
3649 | m->p_type = PT_PHDR; | |
3650 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3651 | m->p_flags = PF_R | PF_X; | |
3652 | m->p_flags_valid = 1; | |
3653 | m->includes_phdrs = 1; | |
252b5132 | 3654 | |
8ded5a0f AM |
3655 | *pm = m; |
3656 | pm = &m->next; | |
252b5132 | 3657 | |
8ded5a0f AM |
3658 | amt = sizeof (struct elf_segment_map); |
3659 | m = bfd_zalloc (abfd, amt); | |
3660 | if (m == NULL) | |
3661 | goto error_return; | |
3662 | m->next = NULL; | |
3663 | m->p_type = PT_INTERP; | |
3664 | m->count = 1; | |
3665 | m->sections[0] = s; | |
3666 | ||
3667 | *pm = m; | |
3668 | pm = &m->next; | |
252b5132 | 3669 | } |
8ded5a0f AM |
3670 | |
3671 | /* Look through the sections. We put sections in the same program | |
3672 | segment when the start of the second section can be placed within | |
3673 | a few bytes of the end of the first section. */ | |
3674 | last_hdr = NULL; | |
3675 | last_size = 0; | |
3676 | phdr_index = 0; | |
3677 | maxpagesize = bed->maxpagesize; | |
3678 | writable = FALSE; | |
3679 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
3680 | if (dynsec != NULL | |
3681 | && (dynsec->flags & SEC_LOAD) == 0) | |
3682 | dynsec = NULL; | |
3683 | ||
3684 | /* Deal with -Ttext or something similar such that the first section | |
3685 | is not adjacent to the program headers. This is an | |
3686 | approximation, since at this point we don't know exactly how many | |
3687 | program headers we will need. */ | |
3688 | if (count > 0) | |
252b5132 | 3689 | { |
8ded5a0f AM |
3690 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
3691 | ||
62d7a5f6 | 3692 | if (phdr_size == (bfd_size_type) -1) |
8ded5a0f AM |
3693 | phdr_size = get_program_header_size (abfd, info); |
3694 | if ((abfd->flags & D_PAGED) == 0 | |
3695 | || sections[0]->lma < phdr_size | |
3696 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
3697 | phdr_in_segment = FALSE; | |
252b5132 RH |
3698 | } |
3699 | ||
8ded5a0f | 3700 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) |
252b5132 | 3701 | { |
8ded5a0f AM |
3702 | asection *hdr; |
3703 | bfd_boolean new_segment; | |
3704 | ||
3705 | hdr = *hdrpp; | |
3706 | ||
3707 | /* See if this section and the last one will fit in the same | |
3708 | segment. */ | |
3709 | ||
3710 | if (last_hdr == NULL) | |
3711 | { | |
3712 | /* If we don't have a segment yet, then we don't need a new | |
3713 | one (we build the last one after this loop). */ | |
3714 | new_segment = FALSE; | |
3715 | } | |
3716 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3717 | { | |
3718 | /* If this section has a different relation between the | |
3719 | virtual address and the load address, then we need a new | |
3720 | segment. */ | |
3721 | new_segment = TRUE; | |
3722 | } | |
39948a60 NC |
3723 | /* In the next test we have to be careful when last_hdr->lma is close |
3724 | to the end of the address space. If the aligned address wraps | |
3725 | around to the start of the address space, then there are no more | |
3726 | pages left in memory and it is OK to assume that the current | |
3727 | section can be included in the current segment. */ | |
3728 | else if ((BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) + maxpagesize | |
3729 | > last_hdr->lma) | |
3730 | && (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) + maxpagesize | |
4ff73856 | 3731 | <= hdr->lma)) |
8ded5a0f AM |
3732 | { |
3733 | /* If putting this section in this segment would force us to | |
3734 | skip a page in the segment, then we need a new segment. */ | |
3735 | new_segment = TRUE; | |
3736 | } | |
3737 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 | |
3738 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
3739 | { | |
3740 | /* We don't want to put a loadable section after a | |
3741 | nonloadable section in the same segment. | |
3742 | Consider .tbss sections as loadable for this purpose. */ | |
3743 | new_segment = TRUE; | |
3744 | } | |
3745 | else if ((abfd->flags & D_PAGED) == 0) | |
3746 | { | |
3747 | /* If the file is not demand paged, which means that we | |
3748 | don't require the sections to be correctly aligned in the | |
3749 | file, then there is no other reason for a new segment. */ | |
3750 | new_segment = FALSE; | |
3751 | } | |
3752 | else if (! writable | |
3753 | && (hdr->flags & SEC_READONLY) == 0 | |
3754 | && (((last_hdr->lma + last_size - 1) | |
3755 | & ~(maxpagesize - 1)) | |
3756 | != (hdr->lma & ~(maxpagesize - 1)))) | |
3757 | { | |
3758 | /* We don't want to put a writable section in a read only | |
3759 | segment, unless they are on the same page in memory | |
3760 | anyhow. We already know that the last section does not | |
3761 | bring us past the current section on the page, so the | |
3762 | only case in which the new section is not on the same | |
3763 | page as the previous section is when the previous section | |
3764 | ends precisely on a page boundary. */ | |
3765 | new_segment = TRUE; | |
3766 | } | |
3767 | else | |
3768 | { | |
3769 | /* Otherwise, we can use the same segment. */ | |
3770 | new_segment = FALSE; | |
3771 | } | |
3772 | ||
2889e75b | 3773 | /* Allow interested parties a chance to override our decision. */ |
ceae84aa AM |
3774 | if (last_hdr != NULL |
3775 | && info != NULL | |
3776 | && info->callbacks->override_segment_assignment != NULL) | |
3777 | new_segment | |
3778 | = info->callbacks->override_segment_assignment (info, abfd, hdr, | |
3779 | last_hdr, | |
3780 | new_segment); | |
2889e75b | 3781 | |
8ded5a0f AM |
3782 | if (! new_segment) |
3783 | { | |
3784 | if ((hdr->flags & SEC_READONLY) == 0) | |
3785 | writable = TRUE; | |
3786 | last_hdr = hdr; | |
3787 | /* .tbss sections effectively have zero size. */ | |
3788 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) | |
3789 | != SEC_THREAD_LOCAL) | |
3790 | last_size = hdr->size; | |
3791 | else | |
3792 | last_size = 0; | |
3793 | continue; | |
3794 | } | |
3795 | ||
3796 | /* We need a new program segment. We must create a new program | |
3797 | header holding all the sections from phdr_index until hdr. */ | |
3798 | ||
3799 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3800 | if (m == NULL) | |
3801 | goto error_return; | |
3802 | ||
3803 | *pm = m; | |
3804 | pm = &m->next; | |
3805 | ||
252b5132 | 3806 | if ((hdr->flags & SEC_READONLY) == 0) |
b34976b6 | 3807 | writable = TRUE; |
8ded5a0f AM |
3808 | else |
3809 | writable = FALSE; | |
3810 | ||
baaff79e JJ |
3811 | last_hdr = hdr; |
3812 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3813 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3814 | last_size = hdr->size; |
baaff79e JJ |
3815 | else |
3816 | last_size = 0; | |
8ded5a0f AM |
3817 | phdr_index = i; |
3818 | phdr_in_segment = FALSE; | |
252b5132 RH |
3819 | } |
3820 | ||
8ded5a0f AM |
3821 | /* Create a final PT_LOAD program segment. */ |
3822 | if (last_hdr != NULL) | |
3823 | { | |
3824 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3825 | if (m == NULL) | |
3826 | goto error_return; | |
252b5132 | 3827 | |
8ded5a0f AM |
3828 | *pm = m; |
3829 | pm = &m->next; | |
3830 | } | |
252b5132 | 3831 | |
8ded5a0f AM |
3832 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ |
3833 | if (dynsec != NULL) | |
3834 | { | |
3835 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
3836 | if (m == NULL) | |
3837 | goto error_return; | |
3838 | *pm = m; | |
3839 | pm = &m->next; | |
3840 | } | |
252b5132 | 3841 | |
1c5265b5 JJ |
3842 | /* For each batch of consecutive loadable .note sections, |
3843 | add a PT_NOTE segment. We don't use bfd_get_section_by_name, | |
3844 | because if we link together nonloadable .note sections and | |
3845 | loadable .note sections, we will generate two .note sections | |
3846 | in the output file. FIXME: Using names for section types is | |
3847 | bogus anyhow. */ | |
8ded5a0f AM |
3848 | for (s = abfd->sections; s != NULL; s = s->next) |
3849 | { | |
3850 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 3851 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f | 3852 | { |
1c5265b5 JJ |
3853 | asection *s2; |
3854 | unsigned count = 1; | |
8ded5a0f | 3855 | amt = sizeof (struct elf_segment_map); |
1c5265b5 JJ |
3856 | if (s->alignment_power == 2) |
3857 | for (s2 = s; s2->next != NULL; s2 = s2->next) | |
55b581a6 JJ |
3858 | { |
3859 | if (s2->next->alignment_power == 2 | |
3860 | && (s2->next->flags & SEC_LOAD) != 0 | |
3861 | && CONST_STRNEQ (s2->next->name, ".note") | |
3862 | && align_power (s2->vma + s2->size, 2) | |
3863 | == s2->next->vma) | |
3864 | count++; | |
3865 | else | |
3866 | break; | |
3867 | } | |
1c5265b5 | 3868 | amt += (count - 1) * sizeof (asection *); |
8ded5a0f AM |
3869 | m = bfd_zalloc (abfd, amt); |
3870 | if (m == NULL) | |
3871 | goto error_return; | |
3872 | m->next = NULL; | |
3873 | m->p_type = PT_NOTE; | |
1c5265b5 JJ |
3874 | m->count = count; |
3875 | while (count > 1) | |
3876 | { | |
3877 | m->sections[m->count - count--] = s; | |
3878 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
3879 | s = s->next; | |
3880 | } | |
3881 | m->sections[m->count - 1] = s; | |
3882 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
8ded5a0f AM |
3883 | *pm = m; |
3884 | pm = &m->next; | |
3885 | } | |
3886 | if (s->flags & SEC_THREAD_LOCAL) | |
3887 | { | |
3888 | if (! tls_count) | |
3889 | first_tls = s; | |
3890 | tls_count++; | |
3891 | } | |
3892 | } | |
252b5132 | 3893 | |
8ded5a0f AM |
3894 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ |
3895 | if (tls_count > 0) | |
3896 | { | |
3897 | int i; | |
252b5132 | 3898 | |
8ded5a0f AM |
3899 | amt = sizeof (struct elf_segment_map); |
3900 | amt += (tls_count - 1) * sizeof (asection *); | |
3901 | m = bfd_zalloc (abfd, amt); | |
3902 | if (m == NULL) | |
3903 | goto error_return; | |
3904 | m->next = NULL; | |
3905 | m->p_type = PT_TLS; | |
3906 | m->count = tls_count; | |
3907 | /* Mandated PF_R. */ | |
3908 | m->p_flags = PF_R; | |
3909 | m->p_flags_valid = 1; | |
3910 | for (i = 0; i < tls_count; ++i) | |
3911 | { | |
3912 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
3913 | m->sections[i] = first_tls; | |
3914 | first_tls = first_tls->next; | |
3915 | } | |
252b5132 | 3916 | |
8ded5a0f AM |
3917 | *pm = m; |
3918 | pm = &m->next; | |
3919 | } | |
252b5132 | 3920 | |
8ded5a0f AM |
3921 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
3922 | segment. */ | |
3923 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; | |
3924 | if (eh_frame_hdr != NULL | |
3925 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
252b5132 | 3926 | { |
dc810e39 | 3927 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3928 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3929 | if (m == NULL) |
3930 | goto error_return; | |
3931 | m->next = NULL; | |
8ded5a0f | 3932 | m->p_type = PT_GNU_EH_FRAME; |
252b5132 | 3933 | m->count = 1; |
8ded5a0f | 3934 | m->sections[0] = eh_frame_hdr->output_section; |
252b5132 RH |
3935 | |
3936 | *pm = m; | |
3937 | pm = &m->next; | |
3938 | } | |
13ae64f3 | 3939 | |
8ded5a0f | 3940 | if (elf_tdata (abfd)->stack_flags) |
13ae64f3 | 3941 | { |
8ded5a0f AM |
3942 | amt = sizeof (struct elf_segment_map); |
3943 | m = bfd_zalloc (abfd, amt); | |
3944 | if (m == NULL) | |
3945 | goto error_return; | |
3946 | m->next = NULL; | |
2b05f1b7 | 3947 | m->p_type = PT_GNU_STACK; |
8ded5a0f AM |
3948 | m->p_flags = elf_tdata (abfd)->stack_flags; |
3949 | m->p_flags_valid = 1; | |
252b5132 | 3950 | |
8ded5a0f AM |
3951 | *pm = m; |
3952 | pm = &m->next; | |
3953 | } | |
65765700 | 3954 | |
ceae84aa | 3955 | if (info != NULL && info->relro) |
8ded5a0f | 3956 | { |
f210dcff L |
3957 | for (m = mfirst; m != NULL; m = m->next) |
3958 | { | |
3959 | if (m->p_type == PT_LOAD) | |
3960 | { | |
3961 | asection *last = m->sections[m->count - 1]; | |
3962 | bfd_vma vaddr = m->sections[0]->vma; | |
3963 | bfd_vma filesz = last->vma - vaddr + last->size; | |
65765700 | 3964 | |
f210dcff L |
3965 | if (vaddr < info->relro_end |
3966 | && vaddr >= info->relro_start | |
3967 | && (vaddr + filesz) >= info->relro_end) | |
3968 | break; | |
3969 | } | |
3970 | } | |
3971 | ||
3972 | /* Make a PT_GNU_RELRO segment only when it isn't empty. */ | |
3973 | if (m != NULL) | |
3974 | { | |
3975 | amt = sizeof (struct elf_segment_map); | |
3976 | m = bfd_zalloc (abfd, amt); | |
3977 | if (m == NULL) | |
3978 | goto error_return; | |
3979 | m->next = NULL; | |
3980 | m->p_type = PT_GNU_RELRO; | |
3981 | m->p_flags = PF_R; | |
3982 | m->p_flags_valid = 1; | |
3983 | ||
3984 | *pm = m; | |
3985 | pm = &m->next; | |
3986 | } | |
8ded5a0f | 3987 | } |
9ee5e499 | 3988 | |
8ded5a0f AM |
3989 | free (sections); |
3990 | elf_tdata (abfd)->segment_map = mfirst; | |
9ee5e499 JJ |
3991 | } |
3992 | ||
3dea8fca | 3993 | if (!elf_modify_segment_map (abfd, info, no_user_phdrs)) |
8ded5a0f | 3994 | return FALSE; |
8c37241b | 3995 | |
8ded5a0f AM |
3996 | for (count = 0, m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
3997 | ++count; | |
3998 | elf_tdata (abfd)->program_header_size = count * bed->s->sizeof_phdr; | |
252b5132 | 3999 | |
b34976b6 | 4000 | return TRUE; |
252b5132 RH |
4001 | |
4002 | error_return: | |
4003 | if (sections != NULL) | |
4004 | free (sections); | |
b34976b6 | 4005 | return FALSE; |
252b5132 RH |
4006 | } |
4007 | ||
4008 | /* Sort sections by address. */ | |
4009 | ||
4010 | static int | |
217aa764 | 4011 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
4012 | { |
4013 | const asection *sec1 = *(const asection **) arg1; | |
4014 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 4015 | bfd_size_type size1, size2; |
252b5132 RH |
4016 | |
4017 | /* Sort by LMA first, since this is the address used to | |
4018 | place the section into a segment. */ | |
4019 | if (sec1->lma < sec2->lma) | |
4020 | return -1; | |
4021 | else if (sec1->lma > sec2->lma) | |
4022 | return 1; | |
4023 | ||
4024 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
4025 | the same, and this will do nothing. */ | |
4026 | if (sec1->vma < sec2->vma) | |
4027 | return -1; | |
4028 | else if (sec1->vma > sec2->vma) | |
4029 | return 1; | |
4030 | ||
4031 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
4032 | ||
07c6e936 | 4033 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
4034 | |
4035 | if (TOEND (sec1)) | |
4036 | { | |
4037 | if (TOEND (sec2)) | |
00a7cdc5 NC |
4038 | { |
4039 | /* If the indicies are the same, do not return 0 | |
4040 | here, but continue to try the next comparison. */ | |
4041 | if (sec1->target_index - sec2->target_index != 0) | |
4042 | return sec1->target_index - sec2->target_index; | |
4043 | } | |
252b5132 RH |
4044 | else |
4045 | return 1; | |
4046 | } | |
00a7cdc5 | 4047 | else if (TOEND (sec2)) |
252b5132 RH |
4048 | return -1; |
4049 | ||
4050 | #undef TOEND | |
4051 | ||
00a7cdc5 NC |
4052 | /* Sort by size, to put zero sized sections |
4053 | before others at the same address. */ | |
252b5132 | 4054 | |
eea6121a AM |
4055 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
4056 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
4057 | |
4058 | if (size1 < size2) | |
252b5132 | 4059 | return -1; |
eecdbe52 | 4060 | if (size1 > size2) |
252b5132 RH |
4061 | return 1; |
4062 | ||
4063 | return sec1->target_index - sec2->target_index; | |
4064 | } | |
4065 | ||
340b6d91 AC |
4066 | /* Ian Lance Taylor writes: |
4067 | ||
4068 | We shouldn't be using % with a negative signed number. That's just | |
4069 | not good. We have to make sure either that the number is not | |
4070 | negative, or that the number has an unsigned type. When the types | |
4071 | are all the same size they wind up as unsigned. When file_ptr is a | |
4072 | larger signed type, the arithmetic winds up as signed long long, | |
4073 | which is wrong. | |
4074 | ||
4075 | What we're trying to say here is something like ``increase OFF by | |
4076 | the least amount that will cause it to be equal to the VMA modulo | |
4077 | the page size.'' */ | |
4078 | /* In other words, something like: | |
4079 | ||
4080 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
4081 | off_offset = off % bed->maxpagesize; | |
4082 | if (vma_offset < off_offset) | |
4083 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4084 | else | |
4085 | adjustment = vma_offset - off_offset; | |
08a40648 | 4086 | |
340b6d91 AC |
4087 | which can can be collapsed into the expression below. */ |
4088 | ||
4089 | static file_ptr | |
4090 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4091 | { | |
4092 | return ((vma - off) % maxpagesize); | |
4093 | } | |
4094 | ||
6d33f217 L |
4095 | static void |
4096 | print_segment_map (const struct elf_segment_map *m) | |
4097 | { | |
4098 | unsigned int j; | |
4099 | const char *pt = get_segment_type (m->p_type); | |
4100 | char buf[32]; | |
4101 | ||
4102 | if (pt == NULL) | |
4103 | { | |
4104 | if (m->p_type >= PT_LOPROC && m->p_type <= PT_HIPROC) | |
4105 | sprintf (buf, "LOPROC+%7.7x", | |
4106 | (unsigned int) (m->p_type - PT_LOPROC)); | |
4107 | else if (m->p_type >= PT_LOOS && m->p_type <= PT_HIOS) | |
4108 | sprintf (buf, "LOOS+%7.7x", | |
4109 | (unsigned int) (m->p_type - PT_LOOS)); | |
4110 | else | |
4111 | snprintf (buf, sizeof (buf), "%8.8x", | |
4112 | (unsigned int) m->p_type); | |
4113 | pt = buf; | |
4114 | } | |
4115 | fprintf (stderr, "%s:", pt); | |
4116 | for (j = 0; j < m->count; j++) | |
4117 | fprintf (stderr, " %s", m->sections [j]->name); | |
4118 | putc ('\n',stderr); | |
4119 | } | |
4120 | ||
252b5132 RH |
4121 | /* Assign file positions to the sections based on the mapping from |
4122 | sections to segments. This function also sets up some fields in | |
f3520d2f | 4123 | the file header. */ |
252b5132 | 4124 | |
b34976b6 | 4125 | static bfd_boolean |
f3520d2f AM |
4126 | assign_file_positions_for_load_sections (bfd *abfd, |
4127 | struct bfd_link_info *link_info) | |
252b5132 RH |
4128 | { |
4129 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 4130 | struct elf_segment_map *m; |
252b5132 | 4131 | Elf_Internal_Phdr *phdrs; |
252b5132 | 4132 | Elf_Internal_Phdr *p; |
02bf8d82 | 4133 | file_ptr off; |
3f570048 | 4134 | bfd_size_type maxpagesize; |
f3520d2f | 4135 | unsigned int alloc; |
0920dee7 | 4136 | unsigned int i, j; |
2b0bc088 | 4137 | bfd_vma header_pad = 0; |
252b5132 | 4138 | |
e36284ab | 4139 | if (link_info == NULL |
ceae84aa | 4140 | && !_bfd_elf_map_sections_to_segments (abfd, link_info)) |
8ded5a0f | 4141 | return FALSE; |
252b5132 | 4142 | |
8ded5a0f | 4143 | alloc = 0; |
252b5132 | 4144 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
2b0bc088 NC |
4145 | { |
4146 | ++alloc; | |
4147 | if (m->header_size) | |
4148 | header_pad = m->header_size; | |
4149 | } | |
252b5132 RH |
4150 | |
4151 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4152 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
8ded5a0f | 4153 | elf_elfheader (abfd)->e_phnum = alloc; |
252b5132 | 4154 | |
62d7a5f6 | 4155 | if (elf_tdata (abfd)->program_header_size == (bfd_size_type) -1) |
8ded5a0f AM |
4156 | elf_tdata (abfd)->program_header_size = alloc * bed->s->sizeof_phdr; |
4157 | else | |
4158 | BFD_ASSERT (elf_tdata (abfd)->program_header_size | |
59e0647f | 4159 | >= alloc * bed->s->sizeof_phdr); |
252b5132 RH |
4160 | |
4161 | if (alloc == 0) | |
f3520d2f | 4162 | { |
8ded5a0f AM |
4163 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; |
4164 | return TRUE; | |
f3520d2f | 4165 | } |
252b5132 | 4166 | |
57268894 HPN |
4167 | /* We're writing the size in elf_tdata (abfd)->program_header_size, |
4168 | see assign_file_positions_except_relocs, so make sure we have | |
4169 | that amount allocated, with trailing space cleared. | |
4170 | The variable alloc contains the computed need, while elf_tdata | |
4171 | (abfd)->program_header_size contains the size used for the | |
4172 | layout. | |
4173 | See ld/emultempl/elf-generic.em:gld${EMULATION_NAME}_map_segments | |
4174 | where the layout is forced to according to a larger size in the | |
4175 | last iterations for the testcase ld-elf/header. */ | |
4176 | BFD_ASSERT (elf_tdata (abfd)->program_header_size % bed->s->sizeof_phdr | |
4177 | == 0); | |
4178 | phdrs = bfd_zalloc2 (abfd, | |
4179 | (elf_tdata (abfd)->program_header_size | |
4180 | / bed->s->sizeof_phdr), | |
4181 | sizeof (Elf_Internal_Phdr)); | |
f3520d2f | 4182 | elf_tdata (abfd)->phdr = phdrs; |
252b5132 | 4183 | if (phdrs == NULL) |
b34976b6 | 4184 | return FALSE; |
252b5132 | 4185 | |
3f570048 AM |
4186 | maxpagesize = 1; |
4187 | if ((abfd->flags & D_PAGED) != 0) | |
4188 | maxpagesize = bed->maxpagesize; | |
4189 | ||
252b5132 RH |
4190 | off = bed->s->sizeof_ehdr; |
4191 | off += alloc * bed->s->sizeof_phdr; | |
2b0bc088 NC |
4192 | if (header_pad < (bfd_vma) off) |
4193 | header_pad = 0; | |
4194 | else | |
4195 | header_pad -= off; | |
4196 | off += header_pad; | |
252b5132 | 4197 | |
0920dee7 | 4198 | for (m = elf_tdata (abfd)->segment_map, p = phdrs, j = 0; |
252b5132 | 4199 | m != NULL; |
0920dee7 | 4200 | m = m->next, p++, j++) |
252b5132 | 4201 | { |
252b5132 | 4202 | asection **secpp; |
bf988460 AM |
4203 | bfd_vma off_adjust; |
4204 | bfd_boolean no_contents; | |
252b5132 RH |
4205 | |
4206 | /* If elf_segment_map is not from map_sections_to_segments, the | |
08a40648 | 4207 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4208 | not be done to the PT_NOTE section of a corefile, which may |
4209 | contain several pseudo-sections artificially created by bfd. | |
4210 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4211 | if (m->count > 1 |
4212 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4213 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4214 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4215 | elf_sort_sections); | |
4216 | ||
b301b248 AM |
4217 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4218 | number of sections with contents contributing to both p_filesz | |
4219 | and p_memsz, followed by a number of sections with no contents | |
4220 | that just contribute to p_memsz. In this loop, OFF tracks next | |
02bf8d82 | 4221 | available file offset for PT_LOAD and PT_NOTE segments. */ |
252b5132 | 4222 | p->p_type = m->p_type; |
28a7f3e7 | 4223 | p->p_flags = m->p_flags; |
252b5132 | 4224 | |
3f570048 AM |
4225 | if (m->count == 0) |
4226 | p->p_vaddr = 0; | |
4227 | else | |
3271a814 | 4228 | p->p_vaddr = m->sections[0]->vma - m->p_vaddr_offset; |
3f570048 AM |
4229 | |
4230 | if (m->p_paddr_valid) | |
4231 | p->p_paddr = m->p_paddr; | |
4232 | else if (m->count == 0) | |
4233 | p->p_paddr = 0; | |
4234 | else | |
08a40648 | 4235 | p->p_paddr = m->sections[0]->lma - m->p_vaddr_offset; |
3f570048 AM |
4236 | |
4237 | if (p->p_type == PT_LOAD | |
4238 | && (abfd->flags & D_PAGED) != 0) | |
4239 | { | |
4240 | /* p_align in demand paged PT_LOAD segments effectively stores | |
4241 | the maximum page size. When copying an executable with | |
4242 | objcopy, we set m->p_align from the input file. Use this | |
4243 | value for maxpagesize rather than bed->maxpagesize, which | |
4244 | may be different. Note that we use maxpagesize for PT_TLS | |
4245 | segment alignment later in this function, so we are relying | |
4246 | on at least one PT_LOAD segment appearing before a PT_TLS | |
4247 | segment. */ | |
4248 | if (m->p_align_valid) | |
4249 | maxpagesize = m->p_align; | |
4250 | ||
4251 | p->p_align = maxpagesize; | |
4252 | } | |
3271a814 NS |
4253 | else if (m->p_align_valid) |
4254 | p->p_align = m->p_align; | |
e970b90a DJ |
4255 | else if (m->count == 0) |
4256 | p->p_align = 1 << bed->s->log_file_align; | |
3f570048 AM |
4257 | else |
4258 | p->p_align = 0; | |
4259 | ||
bf988460 AM |
4260 | no_contents = FALSE; |
4261 | off_adjust = 0; | |
252b5132 | 4262 | if (p->p_type == PT_LOAD |
b301b248 | 4263 | && m->count > 0) |
252b5132 | 4264 | { |
b301b248 | 4265 | bfd_size_type align; |
a49e53ed | 4266 | unsigned int align_power = 0; |
b301b248 | 4267 | |
3271a814 NS |
4268 | if (m->p_align_valid) |
4269 | align = p->p_align; | |
4270 | else | |
252b5132 | 4271 | { |
3271a814 NS |
4272 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4273 | { | |
4274 | unsigned int secalign; | |
08a40648 | 4275 | |
3271a814 NS |
4276 | secalign = bfd_get_section_alignment (abfd, *secpp); |
4277 | if (secalign > align_power) | |
4278 | align_power = secalign; | |
4279 | } | |
4280 | align = (bfd_size_type) 1 << align_power; | |
4281 | if (align < maxpagesize) | |
4282 | align = maxpagesize; | |
b301b248 | 4283 | } |
252b5132 | 4284 | |
02bf8d82 AM |
4285 | for (i = 0; i < m->count; i++) |
4286 | if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
4287 | /* If we aren't making room for this section, then | |
4288 | it must be SHT_NOBITS regardless of what we've | |
4289 | set via struct bfd_elf_special_section. */ | |
4290 | elf_section_type (m->sections[i]) = SHT_NOBITS; | |
4291 | ||
bf988460 | 4292 | /* Find out whether this segment contains any loadable |
aea274d3 AM |
4293 | sections. */ |
4294 | no_contents = TRUE; | |
4295 | for (i = 0; i < m->count; i++) | |
4296 | if (elf_section_type (m->sections[i]) != SHT_NOBITS) | |
4297 | { | |
4298 | no_contents = FALSE; | |
4299 | break; | |
4300 | } | |
bf988460 AM |
4301 | |
4302 | off_adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); | |
4303 | off += off_adjust; | |
4304 | if (no_contents) | |
4305 | { | |
4306 | /* We shouldn't need to align the segment on disk since | |
4307 | the segment doesn't need file space, but the gABI | |
4308 | arguably requires the alignment and glibc ld.so | |
4309 | checks it. So to comply with the alignment | |
4310 | requirement but not waste file space, we adjust | |
4311 | p_offset for just this segment. (OFF_ADJUST is | |
4312 | subtracted from OFF later.) This may put p_offset | |
4313 | past the end of file, but that shouldn't matter. */ | |
4314 | } | |
4315 | else | |
4316 | off_adjust = 0; | |
252b5132 | 4317 | } |
b1a6d0b1 NC |
4318 | /* Make sure the .dynamic section is the first section in the |
4319 | PT_DYNAMIC segment. */ | |
4320 | else if (p->p_type == PT_DYNAMIC | |
4321 | && m->count > 1 | |
4322 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4323 | { | |
4324 | _bfd_error_handler | |
b301b248 AM |
4325 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4326 | abfd); | |
b1a6d0b1 NC |
4327 | bfd_set_error (bfd_error_bad_value); |
4328 | return FALSE; | |
4329 | } | |
3f001e84 JK |
4330 | /* Set the note section type to SHT_NOTE. */ |
4331 | else if (p->p_type == PT_NOTE) | |
4332 | for (i = 0; i < m->count; i++) | |
4333 | elf_section_type (m->sections[i]) = SHT_NOTE; | |
252b5132 | 4334 | |
252b5132 RH |
4335 | p->p_offset = 0; |
4336 | p->p_filesz = 0; | |
4337 | p->p_memsz = 0; | |
4338 | ||
4339 | if (m->includes_filehdr) | |
4340 | { | |
bf988460 | 4341 | if (!m->p_flags_valid) |
252b5132 | 4342 | p->p_flags |= PF_R; |
252b5132 RH |
4343 | p->p_filesz = bed->s->sizeof_ehdr; |
4344 | p->p_memsz = bed->s->sizeof_ehdr; | |
4345 | if (m->count > 0) | |
4346 | { | |
4347 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4348 | ||
4349 | if (p->p_vaddr < (bfd_vma) off) | |
4350 | { | |
caf47ea6 | 4351 | (*_bfd_error_handler) |
b301b248 AM |
4352 | (_("%B: Not enough room for program headers, try linking with -N"), |
4353 | abfd); | |
252b5132 | 4354 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4355 | return FALSE; |
252b5132 RH |
4356 | } |
4357 | ||
4358 | p->p_vaddr -= off; | |
bf988460 | 4359 | if (!m->p_paddr_valid) |
252b5132 RH |
4360 | p->p_paddr -= off; |
4361 | } | |
252b5132 RH |
4362 | } |
4363 | ||
4364 | if (m->includes_phdrs) | |
4365 | { | |
bf988460 | 4366 | if (!m->p_flags_valid) |
252b5132 RH |
4367 | p->p_flags |= PF_R; |
4368 | ||
f3520d2f | 4369 | if (!m->includes_filehdr) |
252b5132 RH |
4370 | { |
4371 | p->p_offset = bed->s->sizeof_ehdr; | |
4372 | ||
4373 | if (m->count > 0) | |
4374 | { | |
4375 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4376 | p->p_vaddr -= off - p->p_offset; | |
bf988460 | 4377 | if (!m->p_paddr_valid) |
252b5132 RH |
4378 | p->p_paddr -= off - p->p_offset; |
4379 | } | |
252b5132 RH |
4380 | } |
4381 | ||
4382 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4383 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
2b0bc088 NC |
4384 | if (m->count) |
4385 | { | |
4386 | p->p_filesz += header_pad; | |
4387 | p->p_memsz += header_pad; | |
4388 | } | |
252b5132 RH |
4389 | } |
4390 | ||
4391 | if (p->p_type == PT_LOAD | |
4392 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4393 | { | |
bf988460 | 4394 | if (!m->includes_filehdr && !m->includes_phdrs) |
02bf8d82 | 4395 | p->p_offset = off; |
252b5132 RH |
4396 | else |
4397 | { | |
4398 | file_ptr adjust; | |
4399 | ||
4400 | adjust = off - (p->p_offset + p->p_filesz); | |
bf988460 AM |
4401 | if (!no_contents) |
4402 | p->p_filesz += adjust; | |
252b5132 RH |
4403 | p->p_memsz += adjust; |
4404 | } | |
4405 | } | |
4406 | ||
1ea63fd2 AM |
4407 | /* Set up p_filesz, p_memsz, p_align and p_flags from the section |
4408 | maps. Set filepos for sections in PT_LOAD segments, and in | |
4409 | core files, for sections in PT_NOTE segments. | |
4410 | assign_file_positions_for_non_load_sections will set filepos | |
4411 | for other sections and update p_filesz for other segments. */ | |
252b5132 RH |
4412 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4413 | { | |
4414 | asection *sec; | |
252b5132 | 4415 | bfd_size_type align; |
627b32bc | 4416 | Elf_Internal_Shdr *this_hdr; |
252b5132 RH |
4417 | |
4418 | sec = *secpp; | |
02bf8d82 | 4419 | this_hdr = &elf_section_data (sec)->this_hdr; |
3f570048 | 4420 | align = (bfd_size_type) 1 << bfd_get_section_alignment (abfd, sec); |
252b5132 | 4421 | |
88967714 AM |
4422 | if ((p->p_type == PT_LOAD |
4423 | || p->p_type == PT_TLS) | |
4424 | && (this_hdr->sh_type != SHT_NOBITS | |
4425 | || ((this_hdr->sh_flags & SHF_ALLOC) != 0 | |
4426 | && ((this_hdr->sh_flags & SHF_TLS) == 0 | |
4427 | || p->p_type == PT_TLS)))) | |
252b5132 | 4428 | { |
11701589 | 4429 | bfd_signed_vma adjust = sec->vma - (p->p_vaddr + p->p_memsz); |
252b5132 | 4430 | |
88967714 | 4431 | if (adjust < 0) |
252b5132 | 4432 | { |
88967714 | 4433 | (*_bfd_error_handler) |
11701589 | 4434 | (_("%B: section %A vma 0x%lx overlaps previous sections"), |
37c43c55 | 4435 | abfd, sec, (unsigned long) sec->vma); |
88967714 AM |
4436 | adjust = 0; |
4437 | } | |
4438 | p->p_memsz += adjust; | |
0e922b77 | 4439 | |
88967714 AM |
4440 | if (this_hdr->sh_type != SHT_NOBITS) |
4441 | { | |
4442 | off += adjust; | |
4443 | p->p_filesz += adjust; | |
252b5132 | 4444 | } |
252b5132 RH |
4445 | } |
4446 | ||
4447 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4448 | { | |
b301b248 AM |
4449 | /* The section at i == 0 is the one that actually contains |
4450 | everything. */ | |
4a938328 MS |
4451 | if (i == 0) |
4452 | { | |
627b32bc | 4453 | this_hdr->sh_offset = sec->filepos = off; |
6a3cd2b4 AM |
4454 | off += this_hdr->sh_size; |
4455 | p->p_filesz = this_hdr->sh_size; | |
b301b248 AM |
4456 | p->p_memsz = 0; |
4457 | p->p_align = 1; | |
252b5132 | 4458 | } |
4a938328 | 4459 | else |
252b5132 | 4460 | { |
b301b248 | 4461 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4462 | sec->filepos = 0; |
eea6121a | 4463 | sec->size = 0; |
b301b248 AM |
4464 | sec->flags = 0; |
4465 | continue; | |
252b5132 | 4466 | } |
252b5132 RH |
4467 | } |
4468 | else | |
4469 | { | |
b301b248 AM |
4470 | if (p->p_type == PT_LOAD) |
4471 | { | |
02bf8d82 AM |
4472 | this_hdr->sh_offset = sec->filepos = off; |
4473 | if (this_hdr->sh_type != SHT_NOBITS) | |
6a3cd2b4 | 4474 | off += this_hdr->sh_size; |
b301b248 | 4475 | } |
252b5132 | 4476 | |
02bf8d82 | 4477 | if (this_hdr->sh_type != SHT_NOBITS) |
b301b248 | 4478 | { |
6a3cd2b4 | 4479 | p->p_filesz += this_hdr->sh_size; |
02bf8d82 AM |
4480 | /* A load section without SHF_ALLOC is something like |
4481 | a note section in a PT_NOTE segment. These take | |
4482 | file space but are not loaded into memory. */ | |
4483 | if ((this_hdr->sh_flags & SHF_ALLOC) != 0) | |
6a3cd2b4 | 4484 | p->p_memsz += this_hdr->sh_size; |
b301b248 | 4485 | } |
6a3cd2b4 | 4486 | else if ((this_hdr->sh_flags & SHF_ALLOC) != 0) |
13ae64f3 | 4487 | { |
6a3cd2b4 AM |
4488 | if (p->p_type == PT_TLS) |
4489 | p->p_memsz += this_hdr->sh_size; | |
4490 | ||
4491 | /* .tbss is special. It doesn't contribute to p_memsz of | |
4492 | normal segments. */ | |
4493 | else if ((this_hdr->sh_flags & SHF_TLS) == 0) | |
4494 | p->p_memsz += this_hdr->sh_size; | |
13ae64f3 JJ |
4495 | } |
4496 | ||
b10a8ae0 L |
4497 | if (align > p->p_align |
4498 | && !m->p_align_valid | |
4499 | && (p->p_type != PT_LOAD | |
4500 | || (abfd->flags & D_PAGED) == 0)) | |
252b5132 RH |
4501 | p->p_align = align; |
4502 | } | |
4503 | ||
bf988460 | 4504 | if (!m->p_flags_valid) |
252b5132 RH |
4505 | { |
4506 | p->p_flags |= PF_R; | |
02bf8d82 | 4507 | if ((this_hdr->sh_flags & SHF_EXECINSTR) != 0) |
252b5132 | 4508 | p->p_flags |= PF_X; |
02bf8d82 | 4509 | if ((this_hdr->sh_flags & SHF_WRITE) != 0) |
252b5132 RH |
4510 | p->p_flags |= PF_W; |
4511 | } | |
4512 | } | |
bf988460 | 4513 | off -= off_adjust; |
0920dee7 | 4514 | |
7c928300 AM |
4515 | /* Check that all sections are in a PT_LOAD segment. |
4516 | Don't check funky gdb generated core files. */ | |
4517 | if (p->p_type == PT_LOAD && bfd_get_format (abfd) != bfd_core) | |
0920dee7 L |
4518 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4519 | { | |
4520 | Elf_Internal_Shdr *this_hdr; | |
4521 | asection *sec; | |
4522 | ||
4523 | sec = *secpp; | |
4524 | this_hdr = &(elf_section_data(sec)->this_hdr); | |
4525 | if (this_hdr->sh_size != 0 | |
4526 | && !ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, p)) | |
4527 | { | |
4528 | (*_bfd_error_handler) | |
4529 | (_("%B: section `%A' can't be allocated in segment %d"), | |
4530 | abfd, sec, j); | |
6d33f217 | 4531 | print_segment_map (m); |
0920dee7 L |
4532 | bfd_set_error (bfd_error_bad_value); |
4533 | return FALSE; | |
4534 | } | |
4535 | } | |
252b5132 RH |
4536 | } |
4537 | ||
f3520d2f AM |
4538 | elf_tdata (abfd)->next_file_pos = off; |
4539 | return TRUE; | |
4540 | } | |
4541 | ||
4542 | /* Assign file positions for the other sections. */ | |
4543 | ||
4544 | static bfd_boolean | |
4545 | assign_file_positions_for_non_load_sections (bfd *abfd, | |
4546 | struct bfd_link_info *link_info) | |
4547 | { | |
4548 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4549 | Elf_Internal_Shdr **i_shdrpp; | |
4550 | Elf_Internal_Shdr **hdrpp; | |
4551 | Elf_Internal_Phdr *phdrs; | |
4552 | Elf_Internal_Phdr *p; | |
4553 | struct elf_segment_map *m; | |
4554 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4555 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4556 | file_ptr off; | |
4557 | unsigned int num_sec; | |
4558 | unsigned int i; | |
4559 | unsigned int count; | |
4560 | ||
5c182d5f AM |
4561 | i_shdrpp = elf_elfsections (abfd); |
4562 | num_sec = elf_numsections (abfd); | |
f3520d2f | 4563 | off = elf_tdata (abfd)->next_file_pos; |
5c182d5f AM |
4564 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
4565 | { | |
4566 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
4567 | Elf_Internal_Shdr *hdr; | |
4568 | ||
4569 | hdr = *hdrpp; | |
4570 | if (hdr->bfd_section != NULL | |
252e386e AM |
4571 | && (hdr->bfd_section->filepos != 0 |
4572 | || (hdr->sh_type == SHT_NOBITS | |
4573 | && hdr->contents == NULL))) | |
627b32bc | 4574 | BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos); |
5c182d5f AM |
4575 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) |
4576 | { | |
49c13adb L |
4577 | if (hdr->sh_size != 0) |
4578 | ((*_bfd_error_handler) | |
4579 | (_("%B: warning: allocated section `%s' not in segment"), | |
3ba71138 L |
4580 | abfd, |
4581 | (hdr->bfd_section == NULL | |
4582 | ? "*unknown*" | |
4583 | : hdr->bfd_section->name))); | |
4584 | /* We don't need to page align empty sections. */ | |
4585 | if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0) | |
5c182d5f AM |
4586 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4587 | bed->maxpagesize); | |
4588 | else | |
4589 | off += vma_page_aligned_bias (hdr->sh_addr, off, | |
4590 | hdr->sh_addralign); | |
4591 | off = _bfd_elf_assign_file_position_for_section (hdr, off, | |
4592 | FALSE); | |
4593 | } | |
4594 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) | |
4595 | && hdr->bfd_section == NULL) | |
4596 | || hdr == i_shdrpp[tdata->symtab_section] | |
4597 | || hdr == i_shdrpp[tdata->symtab_shndx_section] | |
4598 | || hdr == i_shdrpp[tdata->strtab_section]) | |
4599 | hdr->sh_offset = -1; | |
4600 | else | |
4601 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); | |
5c182d5f AM |
4602 | } |
4603 | ||
252b5132 RH |
4604 | /* Now that we have set the section file positions, we can set up |
4605 | the file positions for the non PT_LOAD segments. */ | |
f3520d2f AM |
4606 | count = 0; |
4607 | filehdr_vaddr = 0; | |
4608 | filehdr_paddr = 0; | |
4609 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4610 | phdrs_paddr = 0; | |
4611 | phdrs = elf_tdata (abfd)->phdr; | |
4612 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4613 | m != NULL; | |
4614 | m = m->next, p++) | |
4615 | { | |
4616 | ++count; | |
4617 | if (p->p_type != PT_LOAD) | |
4618 | continue; | |
4619 | ||
4620 | if (m->includes_filehdr) | |
4621 | { | |
4622 | filehdr_vaddr = p->p_vaddr; | |
4623 | filehdr_paddr = p->p_paddr; | |
4624 | } | |
4625 | if (m->includes_phdrs) | |
4626 | { | |
4627 | phdrs_vaddr = p->p_vaddr; | |
4628 | phdrs_paddr = p->p_paddr; | |
4629 | if (m->includes_filehdr) | |
4630 | { | |
4631 | phdrs_vaddr += bed->s->sizeof_ehdr; | |
4632 | phdrs_paddr += bed->s->sizeof_ehdr; | |
4633 | } | |
4634 | } | |
4635 | } | |
4636 | ||
252b5132 RH |
4637 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; |
4638 | m != NULL; | |
4639 | m = m->next, p++) | |
4640 | { | |
129af99f | 4641 | if (p->p_type == PT_GNU_RELRO) |
252b5132 | 4642 | { |
b84a33b5 AM |
4643 | const Elf_Internal_Phdr *lp; |
4644 | ||
129af99f | 4645 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); |
1ea63fd2 | 4646 | |
129af99f | 4647 | if (link_info != NULL) |
8c37241b | 4648 | { |
129af99f AS |
4649 | /* During linking the range of the RELRO segment is passed |
4650 | in link_info. */ | |
8c37241b JJ |
4651 | for (lp = phdrs; lp < phdrs + count; ++lp) |
4652 | { | |
4653 | if (lp->p_type == PT_LOAD | |
8c37241b | 4654 | && lp->p_vaddr >= link_info->relro_start |
b84a33b5 AM |
4655 | && lp->p_vaddr < link_info->relro_end |
4656 | && lp->p_vaddr + lp->p_filesz >= link_info->relro_end) | |
8c37241b JJ |
4657 | break; |
4658 | } | |
8c37241b | 4659 | } |
129af99f AS |
4660 | else |
4661 | { | |
4662 | /* Otherwise we are copying an executable or shared | |
b84a33b5 | 4663 | library, but we need to use the same linker logic. */ |
129af99f AS |
4664 | for (lp = phdrs; lp < phdrs + count; ++lp) |
4665 | { | |
4666 | if (lp->p_type == PT_LOAD | |
4667 | && lp->p_paddr == p->p_paddr) | |
4668 | break; | |
4669 | } | |
b84a33b5 AM |
4670 | } |
4671 | ||
4672 | if (lp < phdrs + count) | |
4673 | { | |
4674 | p->p_vaddr = lp->p_vaddr; | |
4675 | p->p_paddr = lp->p_paddr; | |
4676 | p->p_offset = lp->p_offset; | |
4677 | if (link_info != NULL) | |
4678 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4679 | else if (m->p_size_valid) | |
4680 | p->p_filesz = m->p_size; | |
129af99f AS |
4681 | else |
4682 | abort (); | |
b84a33b5 AM |
4683 | p->p_memsz = p->p_filesz; |
4684 | p->p_align = 1; | |
4685 | p->p_flags = (lp->p_flags & ~PF_W); | |
129af99f | 4686 | } |
9433b9b1 | 4687 | else |
b84a33b5 AM |
4688 | { |
4689 | memset (p, 0, sizeof *p); | |
4690 | p->p_type = PT_NULL; | |
4691 | } | |
129af99f AS |
4692 | } |
4693 | else if (m->count != 0) | |
4694 | { | |
4695 | if (p->p_type != PT_LOAD | |
4696 | && (p->p_type != PT_NOTE | |
4697 | || bfd_get_format (abfd) != bfd_core)) | |
4698 | { | |
4699 | Elf_Internal_Shdr *hdr; | |
4700 | asection *sect; | |
4701 | ||
4702 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); | |
4703 | ||
4704 | sect = m->sections[m->count - 1]; | |
4705 | hdr = &elf_section_data (sect)->this_hdr; | |
4706 | p->p_filesz = sect->filepos - m->sections[0]->filepos; | |
4707 | if (hdr->sh_type != SHT_NOBITS) | |
4708 | p->p_filesz += hdr->sh_size; | |
4709 | p->p_offset = m->sections[0]->filepos; | |
4710 | } | |
4711 | } | |
4712 | else if (m->includes_filehdr) | |
4713 | { | |
4714 | p->p_vaddr = filehdr_vaddr; | |
4715 | if (! m->p_paddr_valid) | |
4716 | p->p_paddr = filehdr_paddr; | |
4717 | } | |
4718 | else if (m->includes_phdrs) | |
4719 | { | |
4720 | p->p_vaddr = phdrs_vaddr; | |
4721 | if (! m->p_paddr_valid) | |
4722 | p->p_paddr = phdrs_paddr; | |
252b5132 RH |
4723 | } |
4724 | } | |
4725 | ||
252b5132 RH |
4726 | elf_tdata (abfd)->next_file_pos = off; |
4727 | ||
b34976b6 | 4728 | return TRUE; |
252b5132 RH |
4729 | } |
4730 | ||
252b5132 RH |
4731 | /* Work out the file positions of all the sections. This is called by |
4732 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4733 | VMAs must be known before this is called. | |
4734 | ||
e0638f70 AM |
4735 | Reloc sections come in two flavours: Those processed specially as |
4736 | "side-channel" data attached to a section to which they apply, and | |
4737 | those that bfd doesn't process as relocations. The latter sort are | |
4738 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4739 | consider the former sort here, unless they form part of the loadable | |
4740 | image. Reloc sections not assigned here will be handled later by | |
4741 | assign_file_positions_for_relocs. | |
252b5132 RH |
4742 | |
4743 | We also don't set the positions of the .symtab and .strtab here. */ | |
4744 | ||
b34976b6 | 4745 | static bfd_boolean |
c84fca4d AO |
4746 | assign_file_positions_except_relocs (bfd *abfd, |
4747 | struct bfd_link_info *link_info) | |
252b5132 | 4748 | { |
5c182d5f AM |
4749 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
4750 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 4751 | file_ptr off; |
9c5bfbb7 | 4752 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4753 | |
4754 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4755 | && bfd_get_format (abfd) != bfd_core) | |
4756 | { | |
5c182d5f AM |
4757 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); |
4758 | unsigned int num_sec = elf_numsections (abfd); | |
252b5132 RH |
4759 | Elf_Internal_Shdr **hdrpp; |
4760 | unsigned int i; | |
4761 | ||
4762 | /* Start after the ELF header. */ | |
4763 | off = i_ehdrp->e_ehsize; | |
4764 | ||
4765 | /* We are not creating an executable, which means that we are | |
4766 | not creating a program header, and that the actual order of | |
4767 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4768 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4769 | { |
4770 | Elf_Internal_Shdr *hdr; | |
4771 | ||
4772 | hdr = *hdrpp; | |
e0638f70 AM |
4773 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4774 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4775 | || i == tdata->symtab_section |
4776 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4777 | || i == tdata->strtab_section) |
4778 | { | |
4779 | hdr->sh_offset = -1; | |
252b5132 | 4780 | } |
9ad5cbcf | 4781 | else |
b34976b6 | 4782 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
4783 | } |
4784 | } | |
4785 | else | |
4786 | { | |
f3520d2f AM |
4787 | unsigned int alloc; |
4788 | ||
252b5132 | 4789 | /* Assign file positions for the loaded sections based on the |
08a40648 | 4790 | assignment of sections to segments. */ |
f3520d2f AM |
4791 | if (!assign_file_positions_for_load_sections (abfd, link_info)) |
4792 | return FALSE; | |
4793 | ||
4794 | /* And for non-load sections. */ | |
4795 | if (!assign_file_positions_for_non_load_sections (abfd, link_info)) | |
4796 | return FALSE; | |
4797 | ||
e36284ab AM |
4798 | if (bed->elf_backend_modify_program_headers != NULL) |
4799 | { | |
4800 | if (!(*bed->elf_backend_modify_program_headers) (abfd, link_info)) | |
4801 | return FALSE; | |
4802 | } | |
4803 | ||
f3520d2f AM |
4804 | /* Write out the program headers. */ |
4805 | alloc = tdata->program_header_size / bed->s->sizeof_phdr; | |
4806 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 | |
4807 | || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0) | |
b34976b6 | 4808 | return FALSE; |
252b5132 | 4809 | |
5c182d5f | 4810 | off = tdata->next_file_pos; |
252b5132 RH |
4811 | } |
4812 | ||
4813 | /* Place the section headers. */ | |
45d6a902 | 4814 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4815 | i_ehdrp->e_shoff = off; |
4816 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4817 | ||
5c182d5f | 4818 | tdata->next_file_pos = off; |
252b5132 | 4819 | |
b34976b6 | 4820 | return TRUE; |
252b5132 RH |
4821 | } |
4822 | ||
b34976b6 | 4823 | static bfd_boolean |
217aa764 | 4824 | prep_headers (bfd *abfd) |
252b5132 RH |
4825 | { |
4826 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4827 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
2b0f7ef9 | 4828 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4829 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4830 | |
4831 | i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 4832 | |
2b0f7ef9 | 4833 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4834 | if (shstrtab == NULL) |
b34976b6 | 4835 | return FALSE; |
252b5132 RH |
4836 | |
4837 | elf_shstrtab (abfd) = shstrtab; | |
4838 | ||
4839 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4840 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4841 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4842 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4843 | ||
4844 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4845 | i_ehdrp->e_ident[EI_DATA] = | |
4846 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4847 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4848 | ||
252b5132 RH |
4849 | if ((abfd->flags & DYNAMIC) != 0) |
4850 | i_ehdrp->e_type = ET_DYN; | |
4851 | else if ((abfd->flags & EXEC_P) != 0) | |
4852 | i_ehdrp->e_type = ET_EXEC; | |
4853 | else if (bfd_get_format (abfd) == bfd_core) | |
4854 | i_ehdrp->e_type = ET_CORE; | |
4855 | else | |
4856 | i_ehdrp->e_type = ET_REL; | |
4857 | ||
4858 | switch (bfd_get_arch (abfd)) | |
4859 | { | |
4860 | case bfd_arch_unknown: | |
4861 | i_ehdrp->e_machine = EM_NONE; | |
4862 | break; | |
aa4f99bb AO |
4863 | |
4864 | /* There used to be a long list of cases here, each one setting | |
4865 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4866 | in the corresponding bfd definition. To avoid duplication, | |
4867 | the switch was removed. Machines that need special handling | |
4868 | can generally do it in elf_backend_final_write_processing(), | |
4869 | unless they need the information earlier than the final write. | |
4870 | Such need can generally be supplied by replacing the tests for | |
4871 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4872 | default: |
9c5bfbb7 AM |
4873 | i_ehdrp->e_machine = bed->elf_machine_code; |
4874 | } | |
aa4f99bb | 4875 | |
252b5132 RH |
4876 | i_ehdrp->e_version = bed->s->ev_current; |
4877 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4878 | ||
c044fabd | 4879 | /* No program header, for now. */ |
252b5132 RH |
4880 | i_ehdrp->e_phoff = 0; |
4881 | i_ehdrp->e_phentsize = 0; | |
4882 | i_ehdrp->e_phnum = 0; | |
4883 | ||
c044fabd | 4884 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4885 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4886 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4887 | ||
c044fabd | 4888 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4889 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4890 | /* It all happens later. */ |
4891 | ; | |
252b5132 RH |
4892 | else |
4893 | { | |
4894 | i_ehdrp->e_phentsize = 0; | |
4895 | i_phdrp = 0; | |
4896 | i_ehdrp->e_phoff = 0; | |
4897 | } | |
4898 | ||
4899 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4900 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4901 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4902 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4903 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4904 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4905 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4906 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4907 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4908 | return FALSE; |
252b5132 | 4909 | |
b34976b6 | 4910 | return TRUE; |
252b5132 RH |
4911 | } |
4912 | ||
4913 | /* Assign file positions for all the reloc sections which are not part | |
4914 | of the loadable file image. */ | |
4915 | ||
4916 | void | |
217aa764 | 4917 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4918 | { |
4919 | file_ptr off; | |
9ad5cbcf | 4920 | unsigned int i, num_sec; |
252b5132 RH |
4921 | Elf_Internal_Shdr **shdrpp; |
4922 | ||
4923 | off = elf_tdata (abfd)->next_file_pos; | |
4924 | ||
9ad5cbcf AM |
4925 | num_sec = elf_numsections (abfd); |
4926 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4927 | { |
4928 | Elf_Internal_Shdr *shdrp; | |
4929 | ||
4930 | shdrp = *shdrpp; | |
4931 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4932 | && shdrp->sh_offset == -1) | |
b34976b6 | 4933 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4934 | } |
4935 | ||
4936 | elf_tdata (abfd)->next_file_pos = off; | |
4937 | } | |
4938 | ||
b34976b6 | 4939 | bfd_boolean |
217aa764 | 4940 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 4941 | { |
9c5bfbb7 | 4942 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4943 | Elf_Internal_Ehdr *i_ehdrp; |
4944 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 4945 | bfd_boolean failed; |
9ad5cbcf | 4946 | unsigned int count, num_sec; |
252b5132 RH |
4947 | |
4948 | if (! abfd->output_has_begun | |
217aa764 | 4949 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 4950 | return FALSE; |
252b5132 RH |
4951 | |
4952 | i_shdrp = elf_elfsections (abfd); | |
4953 | i_ehdrp = elf_elfheader (abfd); | |
4954 | ||
b34976b6 | 4955 | failed = FALSE; |
252b5132 RH |
4956 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
4957 | if (failed) | |
b34976b6 | 4958 | return FALSE; |
252b5132 RH |
4959 | |
4960 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
4961 | ||
c044fabd | 4962 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
4963 | num_sec = elf_numsections (abfd); |
4964 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
4965 | { |
4966 | if (bed->elf_backend_section_processing) | |
4967 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
4968 | if (i_shdrp[count]->contents) | |
4969 | { | |
dc810e39 AM |
4970 | bfd_size_type amt = i_shdrp[count]->sh_size; |
4971 | ||
252b5132 | 4972 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 4973 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 4974 | return FALSE; |
252b5132 RH |
4975 | } |
4976 | } | |
4977 | ||
4978 | /* Write out the section header names. */ | |
26ae6d5e DJ |
4979 | if (elf_shstrtab (abfd) != NULL |
4980 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
08a40648 | 4981 | || !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) |
b34976b6 | 4982 | return FALSE; |
252b5132 RH |
4983 | |
4984 | if (bed->elf_backend_final_write_processing) | |
4985 | (*bed->elf_backend_final_write_processing) (abfd, | |
4986 | elf_tdata (abfd)->linker); | |
4987 | ||
ff59fc36 RM |
4988 | if (!bed->s->write_shdrs_and_ehdr (abfd)) |
4989 | return FALSE; | |
4990 | ||
4991 | /* This is last since write_shdrs_and_ehdr can touch i_shdrp[0]. */ | |
bfb53a4f RM |
4992 | if (elf_tdata (abfd)->after_write_object_contents) |
4993 | return (*elf_tdata (abfd)->after_write_object_contents) (abfd); | |
ff59fc36 RM |
4994 | |
4995 | return TRUE; | |
252b5132 RH |
4996 | } |
4997 | ||
b34976b6 | 4998 | bfd_boolean |
217aa764 | 4999 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 5000 | { |
c044fabd | 5001 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
5002 | return _bfd_elf_write_object_contents (abfd); |
5003 | } | |
c044fabd KH |
5004 | |
5005 | /* Given a section, search the header to find them. */ | |
5006 | ||
cb33740c | 5007 | unsigned int |
198beae2 | 5008 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 5009 | { |
9c5bfbb7 | 5010 | const struct elf_backend_data *bed; |
cb33740c | 5011 | unsigned int index; |
252b5132 | 5012 | |
9ad5cbcf AM |
5013 | if (elf_section_data (asect) != NULL |
5014 | && elf_section_data (asect)->this_idx != 0) | |
5015 | return elf_section_data (asect)->this_idx; | |
5016 | ||
5017 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
5018 | index = SHN_ABS; |
5019 | else if (bfd_is_com_section (asect)) | |
5020 | index = SHN_COMMON; | |
5021 | else if (bfd_is_und_section (asect)) | |
5022 | index = SHN_UNDEF; | |
5023 | else | |
cb33740c | 5024 | index = SHN_BAD; |
252b5132 | 5025 | |
af746e92 | 5026 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
5027 | if (bed->elf_backend_section_from_bfd_section) |
5028 | { | |
af746e92 | 5029 | int retval = index; |
9ad5cbcf | 5030 | |
af746e92 AM |
5031 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
5032 | return retval; | |
252b5132 RH |
5033 | } |
5034 | ||
cb33740c | 5035 | if (index == SHN_BAD) |
af746e92 | 5036 | bfd_set_error (bfd_error_nonrepresentable_section); |
252b5132 | 5037 | |
af746e92 | 5038 | return index; |
252b5132 RH |
5039 | } |
5040 | ||
5041 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
5042 | on error. */ | |
5043 | ||
5044 | int | |
217aa764 | 5045 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
5046 | { |
5047 | asymbol *asym_ptr = *asym_ptr_ptr; | |
5048 | int idx; | |
5049 | flagword flags = asym_ptr->flags; | |
5050 | ||
5051 | /* When gas creates relocations against local labels, it creates its | |
5052 | own symbol for the section, but does put the symbol into the | |
5053 | symbol chain, so udata is 0. When the linker is generating | |
5054 | relocatable output, this section symbol may be for one of the | |
5055 | input sections rather than the output section. */ | |
5056 | if (asym_ptr->udata.i == 0 | |
5057 | && (flags & BSF_SECTION_SYM) | |
5058 | && asym_ptr->section) | |
5059 | { | |
5372391b | 5060 | asection *sec; |
252b5132 RH |
5061 | int indx; |
5062 | ||
5372391b AM |
5063 | sec = asym_ptr->section; |
5064 | if (sec->owner != abfd && sec->output_section != NULL) | |
5065 | sec = sec->output_section; | |
5066 | if (sec->owner == abfd | |
5067 | && (indx = sec->index) < elf_num_section_syms (abfd) | |
4e89ac30 | 5068 | && elf_section_syms (abfd)[indx] != NULL) |
252b5132 RH |
5069 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
5070 | } | |
5071 | ||
5072 | idx = asym_ptr->udata.i; | |
5073 | ||
5074 | if (idx == 0) | |
5075 | { | |
5076 | /* This case can occur when using --strip-symbol on a symbol | |
08a40648 | 5077 | which is used in a relocation entry. */ |
252b5132 | 5078 | (*_bfd_error_handler) |
d003868e AM |
5079 | (_("%B: symbol `%s' required but not present"), |
5080 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
5081 | bfd_set_error (bfd_error_no_symbols); |
5082 | return -1; | |
5083 | } | |
5084 | ||
5085 | #if DEBUG & 4 | |
5086 | { | |
5087 | fprintf (stderr, | |
661a3fd4 | 5088 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
5089 | (long) asym_ptr, asym_ptr->name, idx, flags, |
5090 | elf_symbol_flags (flags)); | |
5091 | fflush (stderr); | |
5092 | } | |
5093 | #endif | |
5094 | ||
5095 | return idx; | |
5096 | } | |
5097 | ||
84d1d650 | 5098 | /* Rewrite program header information. */ |
252b5132 | 5099 | |
b34976b6 | 5100 | static bfd_boolean |
84d1d650 | 5101 | rewrite_elf_program_header (bfd *ibfd, bfd *obfd) |
252b5132 | 5102 | { |
b34976b6 AM |
5103 | Elf_Internal_Ehdr *iehdr; |
5104 | struct elf_segment_map *map; | |
5105 | struct elf_segment_map *map_first; | |
5106 | struct elf_segment_map **pointer_to_map; | |
5107 | Elf_Internal_Phdr *segment; | |
5108 | asection *section; | |
5109 | unsigned int i; | |
5110 | unsigned int num_segments; | |
5111 | bfd_boolean phdr_included = FALSE; | |
5c44b38e | 5112 | bfd_boolean p_paddr_valid; |
b34976b6 AM |
5113 | bfd_vma maxpagesize; |
5114 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5115 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5116 | const struct elf_backend_data *bed; |
bc67d8a6 | 5117 | |
caf47ea6 | 5118 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5119 | iehdr = elf_elfheader (ibfd); |
5120 | ||
bc67d8a6 | 5121 | map_first = NULL; |
c044fabd | 5122 | pointer_to_map = &map_first; |
252b5132 RH |
5123 | |
5124 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5125 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5126 | ||
5127 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5128 | #define SEGMENT_END(segment, start) \ |
5129 | (start + (segment->p_memsz > segment->p_filesz \ | |
5130 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5131 | |
eecdbe52 JJ |
5132 | #define SECTION_SIZE(section, segment) \ |
5133 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5134 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5135 | ? section->size : 0) |
eecdbe52 | 5136 | |
b34976b6 | 5137 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5138 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5139 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5140 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5141 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5142 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5143 | |
b34976b6 | 5144 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5145 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5146 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5147 | (section->lma >= base \ | |
eecdbe52 | 5148 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5149 | <= SEGMENT_END (segment, base))) |
252b5132 | 5150 | |
0efc80c8 L |
5151 | /* Handle PT_NOTE segment. */ |
5152 | #define IS_NOTE(p, s) \ | |
aecc8f8a | 5153 | (p->p_type == PT_NOTE \ |
0efc80c8 | 5154 | && elf_section_type (s) == SHT_NOTE \ |
aecc8f8a | 5155 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 5156 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5157 | <= p->p_offset + p->p_filesz)) |
252b5132 | 5158 | |
0efc80c8 L |
5159 | /* Special case: corefile "NOTE" section containing regs, prpsinfo |
5160 | etc. */ | |
5161 | #define IS_COREFILE_NOTE(p, s) \ | |
5162 | (IS_NOTE (p, s) \ | |
5163 | && bfd_get_format (ibfd) == bfd_core \ | |
5164 | && s->vma == 0 \ | |
5165 | && s->lma == 0) | |
5166 | ||
252b5132 RH |
5167 | /* The complicated case when p_vaddr is 0 is to handle the Solaris |
5168 | linker, which generates a PT_INTERP section with p_vaddr and | |
5169 | p_memsz set to 0. */ | |
aecc8f8a AM |
5170 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5171 | (p->p_vaddr == 0 \ | |
5172 | && p->p_paddr == 0 \ | |
5173 | && p->p_memsz == 0 \ | |
5174 | && p->p_filesz > 0 \ | |
5175 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5176 | && s->size > 0 \ |
aecc8f8a | 5177 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 5178 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5179 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5180 | |
bc67d8a6 NC |
5181 | /* Decide if the given section should be included in the given segment. |
5182 | A section will be included if: | |
f5ffc919 | 5183 | 1. It is within the address space of the segment -- we use the LMA |
08a40648 | 5184 | if that is set for the segment and the VMA otherwise, |
0efc80c8 L |
5185 | 2. It is an allocated section or a NOTE section in a PT_NOTE |
5186 | segment. | |
bc67d8a6 | 5187 | 3. There is an output section associated with it, |
eecdbe52 | 5188 | 4. The section has not already been allocated to a previous segment. |
2b05f1b7 | 5189 | 5. PT_GNU_STACK segments do not include any sections. |
03394ac9 | 5190 | 6. PT_TLS segment includes only SHF_TLS sections. |
6f79b219 JJ |
5191 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5192 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
08a40648 | 5193 | (with the possible exception of .dynamic). */ |
9f17e2a6 | 5194 | #define IS_SECTION_IN_INPUT_SEGMENT(section, segment, bed) \ |
2b05f1b7 L |
5195 | ((((segment->p_paddr \ |
5196 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5197 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
5198 | && (section->flags & SEC_ALLOC) != 0) \ | |
0efc80c8 | 5199 | || IS_NOTE (segment, section)) \ |
2b05f1b7 L |
5200 | && segment->p_type != PT_GNU_STACK \ |
5201 | && (segment->p_type != PT_TLS \ | |
5202 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5203 | && (segment->p_type == PT_LOAD \ | |
5204 | || segment->p_type == PT_TLS \ | |
5205 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
5206 | && (segment->p_type != PT_DYNAMIC \ | |
5207 | || SECTION_SIZE (section, segment) > 0 \ | |
5208 | || (segment->p_paddr \ | |
5209 | ? segment->p_paddr != section->lma \ | |
5210 | : segment->p_vaddr != section->vma) \ | |
5211 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5212 | == 0)) \ | |
0067a569 | 5213 | && !section->segment_mark) |
bc67d8a6 | 5214 | |
9f17e2a6 L |
5215 | /* If the output section of a section in the input segment is NULL, |
5216 | it is removed from the corresponding output segment. */ | |
5217 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ | |
5218 | (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed) \ | |
5219 | && section->output_section != NULL) | |
5220 | ||
b34976b6 | 5221 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5222 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5223 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5224 | ||
5225 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5226 | their VMA address ranges and their LMA address ranges overlap. | |
5227 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5228 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5229 | to the same VMA range, but with the .data section mapped to a different | |
5230 | LMA. */ | |
aecc8f8a | 5231 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea | 5232 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
08a40648 | 5233 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ |
b5f852ea | 5234 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ |
08a40648 | 5235 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) |
bc67d8a6 NC |
5236 | |
5237 | /* Initialise the segment mark field. */ | |
5238 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5239 | section->segment_mark = FALSE; |
bc67d8a6 | 5240 | |
5c44b38e AM |
5241 | /* The Solaris linker creates program headers in which all the |
5242 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5243 | file, we get confused. Check for this case, and if we find it | |
5244 | don't set the p_paddr_valid fields. */ | |
5245 | p_paddr_valid = FALSE; | |
5246 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5247 | i < num_segments; | |
5248 | i++, segment++) | |
5249 | if (segment->p_paddr != 0) | |
5250 | { | |
5251 | p_paddr_valid = TRUE; | |
5252 | break; | |
5253 | } | |
5254 | ||
252b5132 | 5255 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5256 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5257 | in the loadable segments. These can be created by weird |
aecc8f8a | 5258 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5259 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5260 | i < num_segments; | |
c044fabd | 5261 | i++, segment++) |
252b5132 | 5262 | { |
252b5132 | 5263 | unsigned int j; |
c044fabd | 5264 | Elf_Internal_Phdr *segment2; |
252b5132 | 5265 | |
aecc8f8a AM |
5266 | if (segment->p_type == PT_INTERP) |
5267 | for (section = ibfd->sections; section; section = section->next) | |
5268 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5269 | { | |
5270 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5271 | assignment code will work. */ |
aecc8f8a AM |
5272 | segment->p_vaddr = section->vma; |
5273 | break; | |
5274 | } | |
5275 | ||
bc67d8a6 | 5276 | if (segment->p_type != PT_LOAD) |
b10a8ae0 L |
5277 | { |
5278 | /* Remove PT_GNU_RELRO segment. */ | |
5279 | if (segment->p_type == PT_GNU_RELRO) | |
5280 | segment->p_type = PT_NULL; | |
5281 | continue; | |
5282 | } | |
c044fabd | 5283 | |
bc67d8a6 | 5284 | /* Determine if this segment overlaps any previous segments. */ |
0067a569 | 5285 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2++) |
bc67d8a6 NC |
5286 | { |
5287 | bfd_signed_vma extra_length; | |
c044fabd | 5288 | |
bc67d8a6 | 5289 | if (segment2->p_type != PT_LOAD |
0067a569 | 5290 | || !SEGMENT_OVERLAPS (segment, segment2)) |
bc67d8a6 | 5291 | continue; |
c044fabd | 5292 | |
bc67d8a6 NC |
5293 | /* Merge the two segments together. */ |
5294 | if (segment2->p_vaddr < segment->p_vaddr) | |
5295 | { | |
c044fabd | 5296 | /* Extend SEGMENT2 to include SEGMENT and then delete |
08a40648 | 5297 | SEGMENT. */ |
0067a569 AM |
5298 | extra_length = (SEGMENT_END (segment, segment->p_vaddr) |
5299 | - SEGMENT_END (segment2, segment2->p_vaddr)); | |
c044fabd | 5300 | |
bc67d8a6 NC |
5301 | if (extra_length > 0) |
5302 | { | |
0067a569 | 5303 | segment2->p_memsz += extra_length; |
bc67d8a6 NC |
5304 | segment2->p_filesz += extra_length; |
5305 | } | |
c044fabd | 5306 | |
bc67d8a6 | 5307 | segment->p_type = PT_NULL; |
c044fabd | 5308 | |
bc67d8a6 NC |
5309 | /* Since we have deleted P we must restart the outer loop. */ |
5310 | i = 0; | |
5311 | segment = elf_tdata (ibfd)->phdr; | |
5312 | break; | |
5313 | } | |
5314 | else | |
5315 | { | |
c044fabd | 5316 | /* Extend SEGMENT to include SEGMENT2 and then delete |
08a40648 | 5317 | SEGMENT2. */ |
0067a569 AM |
5318 | extra_length = (SEGMENT_END (segment2, segment2->p_vaddr) |
5319 | - SEGMENT_END (segment, segment->p_vaddr)); | |
c044fabd | 5320 | |
bc67d8a6 NC |
5321 | if (extra_length > 0) |
5322 | { | |
0067a569 | 5323 | segment->p_memsz += extra_length; |
bc67d8a6 NC |
5324 | segment->p_filesz += extra_length; |
5325 | } | |
c044fabd | 5326 | |
bc67d8a6 NC |
5327 | segment2->p_type = PT_NULL; |
5328 | } | |
5329 | } | |
5330 | } | |
c044fabd | 5331 | |
bc67d8a6 NC |
5332 | /* The second scan attempts to assign sections to segments. */ |
5333 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5334 | i < num_segments; | |
0067a569 | 5335 | i++, segment++) |
bc67d8a6 | 5336 | { |
0067a569 AM |
5337 | unsigned int section_count; |
5338 | asection **sections; | |
5339 | asection *output_section; | |
5340 | unsigned int isec; | |
5341 | bfd_vma matching_lma; | |
5342 | bfd_vma suggested_lma; | |
5343 | unsigned int j; | |
dc810e39 | 5344 | bfd_size_type amt; |
0067a569 AM |
5345 | asection *first_section; |
5346 | bfd_boolean first_matching_lma; | |
5347 | bfd_boolean first_suggested_lma; | |
bc67d8a6 NC |
5348 | |
5349 | if (segment->p_type == PT_NULL) | |
5350 | continue; | |
c044fabd | 5351 | |
9f17e2a6 | 5352 | first_section = NULL; |
bc67d8a6 | 5353 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5354 | for (section = ibfd->sections, section_count = 0; |
5355 | section != NULL; | |
5356 | section = section->next) | |
9f17e2a6 L |
5357 | { |
5358 | /* Find the first section in the input segment, which may be | |
5359 | removed from the corresponding output segment. */ | |
5360 | if (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed)) | |
5361 | { | |
5362 | if (first_section == NULL) | |
5363 | first_section = section; | |
5364 | if (section->output_section != NULL) | |
5365 | ++section_count; | |
5366 | } | |
5367 | } | |
811072d8 | 5368 | |
b5f852ea NC |
5369 | /* Allocate a segment map big enough to contain |
5370 | all of the sections we have selected. */ | |
dc810e39 AM |
5371 | amt = sizeof (struct elf_segment_map); |
5372 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5373 | map = bfd_zalloc (obfd, amt); |
bc67d8a6 | 5374 | if (map == NULL) |
b34976b6 | 5375 | return FALSE; |
252b5132 RH |
5376 | |
5377 | /* Initialise the fields of the segment map. Default to | |
5378 | using the physical address of the segment in the input BFD. */ | |
0067a569 AM |
5379 | map->next = NULL; |
5380 | map->p_type = segment->p_type; | |
5381 | map->p_flags = segment->p_flags; | |
bc67d8a6 | 5382 | map->p_flags_valid = 1; |
55d55ac7 | 5383 | |
9f17e2a6 L |
5384 | /* If the first section in the input segment is removed, there is |
5385 | no need to preserve segment physical address in the corresponding | |
5386 | output segment. */ | |
945c025a | 5387 | if (!first_section || first_section->output_section != NULL) |
9f17e2a6 L |
5388 | { |
5389 | map->p_paddr = segment->p_paddr; | |
5c44b38e | 5390 | map->p_paddr_valid = p_paddr_valid; |
9f17e2a6 | 5391 | } |
252b5132 RH |
5392 | |
5393 | /* Determine if this segment contains the ELF file header | |
5394 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5395 | map->includes_filehdr = (segment->p_offset == 0 |
5396 | && segment->p_filesz >= iehdr->e_ehsize); | |
bc67d8a6 | 5397 | map->includes_phdrs = 0; |
252b5132 | 5398 | |
0067a569 | 5399 | if (!phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5400 | { |
bc67d8a6 NC |
5401 | map->includes_phdrs = |
5402 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5403 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5404 | >= ((bfd_vma) iehdr->e_phoff |
5405 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5406 | |
bc67d8a6 | 5407 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5408 | phdr_included = TRUE; |
252b5132 RH |
5409 | } |
5410 | ||
bc67d8a6 | 5411 | if (section_count == 0) |
252b5132 RH |
5412 | { |
5413 | /* Special segments, such as the PT_PHDR segment, may contain | |
5414 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5415 | something. They are allowed by the ELF spec however, so only |
5416 | a warning is produced. */ | |
bc67d8a6 | 5417 | if (segment->p_type == PT_LOAD) |
0067a569 AM |
5418 | (*_bfd_error_handler) (_("%B: warning: Empty loadable segment" |
5419 | " detected, is this intentional ?\n"), | |
5420 | ibfd); | |
252b5132 | 5421 | |
bc67d8a6 | 5422 | map->count = 0; |
c044fabd KH |
5423 | *pointer_to_map = map; |
5424 | pointer_to_map = &map->next; | |
252b5132 RH |
5425 | |
5426 | continue; | |
5427 | } | |
5428 | ||
5429 | /* Now scan the sections in the input BFD again and attempt | |
5430 | to add their corresponding output sections to the segment map. | |
5431 | The problem here is how to handle an output section which has | |
5432 | been moved (ie had its LMA changed). There are four possibilities: | |
5433 | ||
5434 | 1. None of the sections have been moved. | |
5435 | In this case we can continue to use the segment LMA from the | |
5436 | input BFD. | |
5437 | ||
5438 | 2. All of the sections have been moved by the same amount. | |
5439 | In this case we can change the segment's LMA to match the LMA | |
5440 | of the first section. | |
5441 | ||
5442 | 3. Some of the sections have been moved, others have not. | |
5443 | In this case those sections which have not been moved can be | |
5444 | placed in the current segment which will have to have its size, | |
5445 | and possibly its LMA changed, and a new segment or segments will | |
5446 | have to be created to contain the other sections. | |
5447 | ||
b5f852ea | 5448 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5449 | In this case we can change the segment's LMA to match the LMA |
5450 | of the first section and we will have to create a new segment | |
5451 | or segments to contain the other sections. | |
5452 | ||
5453 | In order to save time, we allocate an array to hold the section | |
5454 | pointers that we are interested in. As these sections get assigned | |
5455 | to a segment, they are removed from this array. */ | |
5456 | ||
d0fb9a8d | 5457 | sections = bfd_malloc2 (section_count, sizeof (asection *)); |
252b5132 | 5458 | if (sections == NULL) |
b34976b6 | 5459 | return FALSE; |
252b5132 RH |
5460 | |
5461 | /* Step One: Scan for segment vs section LMA conflicts. | |
5462 | Also add the sections to the section array allocated above. | |
5463 | Also add the sections to the current segment. In the common | |
5464 | case, where the sections have not been moved, this means that | |
5465 | we have completely filled the segment, and there is nothing | |
5466 | more to do. */ | |
252b5132 | 5467 | isec = 0; |
72730e0c | 5468 | matching_lma = 0; |
252b5132 | 5469 | suggested_lma = 0; |
0067a569 AM |
5470 | first_matching_lma = TRUE; |
5471 | first_suggested_lma = TRUE; | |
252b5132 | 5472 | |
147d51c2 | 5473 | for (section = ibfd->sections; |
bc67d8a6 NC |
5474 | section != NULL; |
5475 | section = section->next) | |
147d51c2 L |
5476 | if (section == first_section) |
5477 | break; | |
5478 | ||
5479 | for (j = 0; section != NULL; section = section->next) | |
252b5132 | 5480 | { |
caf47ea6 | 5481 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5482 | { |
bc67d8a6 NC |
5483 | output_section = section->output_section; |
5484 | ||
0067a569 | 5485 | sections[j++] = section; |
252b5132 RH |
5486 | |
5487 | /* The Solaris native linker always sets p_paddr to 0. | |
5488 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5489 | correct value. Note - some backends require that |
5490 | p_paddr be left as zero. */ | |
5c44b38e | 5491 | if (!p_paddr_valid |
4455705d | 5492 | && segment->p_vaddr != 0 |
0067a569 | 5493 | && !bed->want_p_paddr_set_to_zero |
252b5132 | 5494 | && isec == 0 |
bc67d8a6 | 5495 | && output_section->lma != 0 |
0067a569 AM |
5496 | && output_section->vma == (segment->p_vaddr |
5497 | + (map->includes_filehdr | |
5498 | ? iehdr->e_ehsize | |
5499 | : 0) | |
5500 | + (map->includes_phdrs | |
5501 | ? (iehdr->e_phnum | |
5502 | * iehdr->e_phentsize) | |
5503 | : 0))) | |
bc67d8a6 | 5504 | map->p_paddr = segment->p_vaddr; |
252b5132 RH |
5505 | |
5506 | /* Match up the physical address of the segment with the | |
5507 | LMA address of the output section. */ | |
bc67d8a6 | 5508 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 | 5509 | || IS_COREFILE_NOTE (segment, section) |
0067a569 AM |
5510 | || (bed->want_p_paddr_set_to_zero |
5511 | && IS_CONTAINED_BY_VMA (output_section, segment))) | |
252b5132 | 5512 | { |
0067a569 AM |
5513 | if (first_matching_lma || output_section->lma < matching_lma) |
5514 | { | |
5515 | matching_lma = output_section->lma; | |
5516 | first_matching_lma = FALSE; | |
5517 | } | |
252b5132 RH |
5518 | |
5519 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5520 | then it does not overlap any other section within that |
252b5132 | 5521 | segment. */ |
0067a569 AM |
5522 | map->sections[isec++] = output_section; |
5523 | } | |
5524 | else if (first_suggested_lma) | |
5525 | { | |
5526 | suggested_lma = output_section->lma; | |
5527 | first_suggested_lma = FALSE; | |
252b5132 | 5528 | } |
147d51c2 L |
5529 | |
5530 | if (j == section_count) | |
5531 | break; | |
252b5132 RH |
5532 | } |
5533 | } | |
5534 | ||
bc67d8a6 | 5535 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5536 | |
5537 | /* Step Two: Adjust the physical address of the current segment, | |
5538 | if necessary. */ | |
bc67d8a6 | 5539 | if (isec == section_count) |
252b5132 RH |
5540 | { |
5541 | /* All of the sections fitted within the segment as currently | |
5542 | specified. This is the default case. Add the segment to | |
5543 | the list of built segments and carry on to process the next | |
5544 | program header in the input BFD. */ | |
bc67d8a6 | 5545 | map->count = section_count; |
c044fabd KH |
5546 | *pointer_to_map = map; |
5547 | pointer_to_map = &map->next; | |
08a40648 | 5548 | |
5c44b38e AM |
5549 | if (p_paddr_valid |
5550 | && !bed->want_p_paddr_set_to_zero | |
147d51c2 | 5551 | && matching_lma != map->p_paddr |
5c44b38e AM |
5552 | && !map->includes_filehdr |
5553 | && !map->includes_phdrs) | |
3271a814 NS |
5554 | /* There is some padding before the first section in the |
5555 | segment. So, we must account for that in the output | |
5556 | segment's vma. */ | |
5557 | map->p_vaddr_offset = matching_lma - map->p_paddr; | |
08a40648 | 5558 | |
252b5132 RH |
5559 | free (sections); |
5560 | continue; | |
5561 | } | |
252b5132 RH |
5562 | else |
5563 | { | |
0067a569 | 5564 | if (!first_matching_lma) |
72730e0c AM |
5565 | { |
5566 | /* At least one section fits inside the current segment. | |
5567 | Keep it, but modify its physical address to match the | |
5568 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5569 | map->p_paddr = matching_lma; |
72730e0c AM |
5570 | } |
5571 | else | |
5572 | { | |
5573 | /* None of the sections fitted inside the current segment. | |
5574 | Change the current segment's physical address to match | |
5575 | the LMA of the first section. */ | |
bc67d8a6 | 5576 | map->p_paddr = suggested_lma; |
72730e0c AM |
5577 | } |
5578 | ||
bc67d8a6 NC |
5579 | /* Offset the segment physical address from the lma |
5580 | to allow for space taken up by elf headers. */ | |
5581 | if (map->includes_filehdr) | |
010c8431 AM |
5582 | { |
5583 | if (map->p_paddr >= iehdr->e_ehsize) | |
5584 | map->p_paddr -= iehdr->e_ehsize; | |
5585 | else | |
5586 | { | |
5587 | map->includes_filehdr = FALSE; | |
5588 | map->includes_phdrs = FALSE; | |
5589 | } | |
5590 | } | |
252b5132 | 5591 | |
bc67d8a6 NC |
5592 | if (map->includes_phdrs) |
5593 | { | |
010c8431 AM |
5594 | if (map->p_paddr >= iehdr->e_phnum * iehdr->e_phentsize) |
5595 | { | |
5596 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5597 | ||
5598 | /* iehdr->e_phnum is just an estimate of the number | |
5599 | of program headers that we will need. Make a note | |
5600 | here of the number we used and the segment we chose | |
5601 | to hold these headers, so that we can adjust the | |
5602 | offset when we know the correct value. */ | |
5603 | phdr_adjust_num = iehdr->e_phnum; | |
5604 | phdr_adjust_seg = map; | |
5605 | } | |
5606 | else | |
5607 | map->includes_phdrs = FALSE; | |
bc67d8a6 | 5608 | } |
252b5132 RH |
5609 | } |
5610 | ||
5611 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5612 | those that fit to the current segment and removing them from the |
252b5132 RH |
5613 | sections array; but making sure not to leave large gaps. Once all |
5614 | possible sections have been assigned to the current segment it is | |
5615 | added to the list of built segments and if sections still remain | |
5616 | to be assigned, a new segment is constructed before repeating | |
5617 | the loop. */ | |
5618 | isec = 0; | |
5619 | do | |
5620 | { | |
bc67d8a6 | 5621 | map->count = 0; |
252b5132 | 5622 | suggested_lma = 0; |
0067a569 | 5623 | first_suggested_lma = TRUE; |
252b5132 RH |
5624 | |
5625 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5626 | for (j = 0; j < section_count; j++) |
252b5132 | 5627 | { |
bc67d8a6 | 5628 | section = sections[j]; |
252b5132 | 5629 | |
bc67d8a6 | 5630 | if (section == NULL) |
252b5132 RH |
5631 | continue; |
5632 | ||
bc67d8a6 | 5633 | output_section = section->output_section; |
252b5132 | 5634 | |
bc67d8a6 | 5635 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5636 | |
bc67d8a6 NC |
5637 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5638 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5639 | { |
bc67d8a6 | 5640 | if (map->count == 0) |
252b5132 RH |
5641 | { |
5642 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5643 | the beginning of the segment, then something is |
5644 | wrong. */ | |
0067a569 AM |
5645 | if (output_section->lma |
5646 | != (map->p_paddr | |
5647 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5648 | + (map->includes_phdrs | |
5649 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5650 | : 0))) | |
252b5132 RH |
5651 | abort (); |
5652 | } | |
5653 | else | |
5654 | { | |
0067a569 | 5655 | asection *prev_sec; |
252b5132 | 5656 | |
bc67d8a6 | 5657 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5658 | |
5659 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5660 | and the start of this section is more than |
5661 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5662 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5663 | maxpagesize) |
caf47ea6 | 5664 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
0067a569 | 5665 | || (prev_sec->lma + prev_sec->size |
079e9a2f | 5666 | > output_section->lma)) |
252b5132 | 5667 | { |
0067a569 AM |
5668 | if (first_suggested_lma) |
5669 | { | |
5670 | suggested_lma = output_section->lma; | |
5671 | first_suggested_lma = FALSE; | |
5672 | } | |
252b5132 RH |
5673 | |
5674 | continue; | |
5675 | } | |
5676 | } | |
5677 | ||
bc67d8a6 | 5678 | map->sections[map->count++] = output_section; |
252b5132 RH |
5679 | ++isec; |
5680 | sections[j] = NULL; | |
b34976b6 | 5681 | section->segment_mark = TRUE; |
252b5132 | 5682 | } |
0067a569 AM |
5683 | else if (first_suggested_lma) |
5684 | { | |
5685 | suggested_lma = output_section->lma; | |
5686 | first_suggested_lma = FALSE; | |
5687 | } | |
252b5132 RH |
5688 | } |
5689 | ||
bc67d8a6 | 5690 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5691 | |
5692 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5693 | *pointer_to_map = map; |
5694 | pointer_to_map = &map->next; | |
252b5132 | 5695 | |
bc67d8a6 | 5696 | if (isec < section_count) |
252b5132 RH |
5697 | { |
5698 | /* We still have not allocated all of the sections to | |
5699 | segments. Create a new segment here, initialise it | |
5700 | and carry on looping. */ | |
dc810e39 AM |
5701 | amt = sizeof (struct elf_segment_map); |
5702 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5703 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5704 | if (map == NULL) |
5ed6aba4 NC |
5705 | { |
5706 | free (sections); | |
5707 | return FALSE; | |
5708 | } | |
252b5132 RH |
5709 | |
5710 | /* Initialise the fields of the segment map. Set the physical | |
5711 | physical address to the LMA of the first section that has | |
5712 | not yet been assigned. */ | |
0067a569 AM |
5713 | map->next = NULL; |
5714 | map->p_type = segment->p_type; | |
5715 | map->p_flags = segment->p_flags; | |
5716 | map->p_flags_valid = 1; | |
5717 | map->p_paddr = suggested_lma; | |
5c44b38e | 5718 | map->p_paddr_valid = p_paddr_valid; |
bc67d8a6 | 5719 | map->includes_filehdr = 0; |
0067a569 | 5720 | map->includes_phdrs = 0; |
252b5132 RH |
5721 | } |
5722 | } | |
bc67d8a6 | 5723 | while (isec < section_count); |
252b5132 RH |
5724 | |
5725 | free (sections); | |
5726 | } | |
5727 | ||
bc67d8a6 NC |
5728 | elf_tdata (obfd)->segment_map = map_first; |
5729 | ||
5730 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5731 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5732 | the offset if necessary. */ |
5733 | if (phdr_adjust_seg != NULL) | |
5734 | { | |
5735 | unsigned int count; | |
c044fabd | 5736 | |
bc67d8a6 | 5737 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5738 | count++; |
252b5132 | 5739 | |
bc67d8a6 NC |
5740 | if (count > phdr_adjust_num) |
5741 | phdr_adjust_seg->p_paddr | |
5742 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5743 | } | |
c044fabd | 5744 | |
bc67d8a6 | 5745 | #undef SEGMENT_END |
eecdbe52 | 5746 | #undef SECTION_SIZE |
bc67d8a6 NC |
5747 | #undef IS_CONTAINED_BY_VMA |
5748 | #undef IS_CONTAINED_BY_LMA | |
0efc80c8 | 5749 | #undef IS_NOTE |
252b5132 | 5750 | #undef IS_COREFILE_NOTE |
bc67d8a6 | 5751 | #undef IS_SOLARIS_PT_INTERP |
9f17e2a6 | 5752 | #undef IS_SECTION_IN_INPUT_SEGMENT |
bc67d8a6 NC |
5753 | #undef INCLUDE_SECTION_IN_SEGMENT |
5754 | #undef SEGMENT_AFTER_SEGMENT | |
5755 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5756 | return TRUE; |
252b5132 RH |
5757 | } |
5758 | ||
84d1d650 L |
5759 | /* Copy ELF program header information. */ |
5760 | ||
5761 | static bfd_boolean | |
5762 | copy_elf_program_header (bfd *ibfd, bfd *obfd) | |
5763 | { | |
5764 | Elf_Internal_Ehdr *iehdr; | |
5765 | struct elf_segment_map *map; | |
5766 | struct elf_segment_map *map_first; | |
5767 | struct elf_segment_map **pointer_to_map; | |
5768 | Elf_Internal_Phdr *segment; | |
5769 | unsigned int i; | |
5770 | unsigned int num_segments; | |
5771 | bfd_boolean phdr_included = FALSE; | |
88967714 | 5772 | bfd_boolean p_paddr_valid; |
84d1d650 L |
5773 | |
5774 | iehdr = elf_elfheader (ibfd); | |
5775 | ||
5776 | map_first = NULL; | |
5777 | pointer_to_map = &map_first; | |
5778 | ||
88967714 AM |
5779 | /* If all the segment p_paddr fields are zero, don't set |
5780 | map->p_paddr_valid. */ | |
5781 | p_paddr_valid = FALSE; | |
84d1d650 | 5782 | num_segments = elf_elfheader (ibfd)->e_phnum; |
88967714 AM |
5783 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5784 | i < num_segments; | |
5785 | i++, segment++) | |
5786 | if (segment->p_paddr != 0) | |
5787 | { | |
5788 | p_paddr_valid = TRUE; | |
5789 | break; | |
5790 | } | |
5791 | ||
84d1d650 L |
5792 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5793 | i < num_segments; | |
5794 | i++, segment++) | |
5795 | { | |
5796 | asection *section; | |
5797 | unsigned int section_count; | |
5798 | bfd_size_type amt; | |
5799 | Elf_Internal_Shdr *this_hdr; | |
53020534 | 5800 | asection *first_section = NULL; |
c981028a | 5801 | asection *lowest_section = NULL; |
84d1d650 | 5802 | |
84d1d650 L |
5803 | /* Compute how many sections are in this segment. */ |
5804 | for (section = ibfd->sections, section_count = 0; | |
5805 | section != NULL; | |
5806 | section = section->next) | |
5807 | { | |
5808 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5809 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
3271a814 | 5810 | { |
53020534 | 5811 | if (!first_section) |
c981028a DJ |
5812 | first_section = lowest_section = section; |
5813 | if (section->lma < lowest_section->lma) | |
5814 | lowest_section = section; | |
3271a814 NS |
5815 | section_count++; |
5816 | } | |
84d1d650 L |
5817 | } |
5818 | ||
5819 | /* Allocate a segment map big enough to contain | |
5820 | all of the sections we have selected. */ | |
5821 | amt = sizeof (struct elf_segment_map); | |
5822 | if (section_count != 0) | |
5823 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5824 | map = bfd_zalloc (obfd, amt); |
84d1d650 L |
5825 | if (map == NULL) |
5826 | return FALSE; | |
5827 | ||
5828 | /* Initialize the fields of the output segment map with the | |
5829 | input segment. */ | |
5830 | map->next = NULL; | |
5831 | map->p_type = segment->p_type; | |
5832 | map->p_flags = segment->p_flags; | |
5833 | map->p_flags_valid = 1; | |
5834 | map->p_paddr = segment->p_paddr; | |
88967714 | 5835 | map->p_paddr_valid = p_paddr_valid; |
3f570048 AM |
5836 | map->p_align = segment->p_align; |
5837 | map->p_align_valid = 1; | |
3271a814 | 5838 | map->p_vaddr_offset = 0; |
84d1d650 | 5839 | |
9433b9b1 | 5840 | if (map->p_type == PT_GNU_RELRO) |
b10a8ae0 L |
5841 | { |
5842 | /* The PT_GNU_RELRO segment may contain the first a few | |
5843 | bytes in the .got.plt section even if the whole .got.plt | |
5844 | section isn't in the PT_GNU_RELRO segment. We won't | |
5845 | change the size of the PT_GNU_RELRO segment. */ | |
9433b9b1 | 5846 | map->p_size = segment->p_memsz; |
b10a8ae0 L |
5847 | map->p_size_valid = 1; |
5848 | } | |
5849 | ||
84d1d650 L |
5850 | /* Determine if this segment contains the ELF file header |
5851 | and if it contains the program headers themselves. */ | |
5852 | map->includes_filehdr = (segment->p_offset == 0 | |
5853 | && segment->p_filesz >= iehdr->e_ehsize); | |
5854 | ||
5855 | map->includes_phdrs = 0; | |
5856 | if (! phdr_included || segment->p_type != PT_LOAD) | |
5857 | { | |
5858 | map->includes_phdrs = | |
5859 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5860 | && (segment->p_offset + segment->p_filesz | |
5861 | >= ((bfd_vma) iehdr->e_phoff | |
5862 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
5863 | ||
5864 | if (segment->p_type == PT_LOAD && map->includes_phdrs) | |
5865 | phdr_included = TRUE; | |
5866 | } | |
5867 | ||
2b0bc088 NC |
5868 | if (map->includes_filehdr && first_section) |
5869 | /* We need to keep the space used by the headers fixed. */ | |
5870 | map->header_size = first_section->vma - segment->p_vaddr; | |
5871 | ||
88967714 AM |
5872 | if (!map->includes_phdrs |
5873 | && !map->includes_filehdr | |
5874 | && map->p_paddr_valid) | |
3271a814 | 5875 | /* There is some other padding before the first section. */ |
c981028a | 5876 | map->p_vaddr_offset = ((lowest_section ? lowest_section->lma : 0) |
53020534 | 5877 | - segment->p_paddr); |
08a40648 | 5878 | |
84d1d650 L |
5879 | if (section_count != 0) |
5880 | { | |
5881 | unsigned int isec = 0; | |
5882 | ||
53020534 | 5883 | for (section = first_section; |
84d1d650 L |
5884 | section != NULL; |
5885 | section = section->next) | |
5886 | { | |
5887 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5888 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
53020534 L |
5889 | { |
5890 | map->sections[isec++] = section->output_section; | |
5891 | if (isec == section_count) | |
5892 | break; | |
5893 | } | |
84d1d650 L |
5894 | } |
5895 | } | |
5896 | ||
5897 | map->count = section_count; | |
5898 | *pointer_to_map = map; | |
5899 | pointer_to_map = &map->next; | |
5900 | } | |
5901 | ||
5902 | elf_tdata (obfd)->segment_map = map_first; | |
5903 | return TRUE; | |
5904 | } | |
5905 | ||
5906 | /* Copy private BFD data. This copies or rewrites ELF program header | |
5907 | information. */ | |
5908 | ||
5909 | static bfd_boolean | |
5910 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5911 | { | |
84d1d650 L |
5912 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5913 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5914 | return TRUE; | |
5915 | ||
5916 | if (elf_tdata (ibfd)->phdr == NULL) | |
5917 | return TRUE; | |
5918 | ||
5919 | if (ibfd->xvec == obfd->xvec) | |
5920 | { | |
cb3ff1e5 NC |
5921 | /* Check to see if any sections in the input BFD |
5922 | covered by ELF program header have changed. */ | |
d55ce4e2 | 5923 | Elf_Internal_Phdr *segment; |
84d1d650 L |
5924 | asection *section, *osec; |
5925 | unsigned int i, num_segments; | |
5926 | Elf_Internal_Shdr *this_hdr; | |
147d51c2 L |
5927 | const struct elf_backend_data *bed; |
5928 | ||
5929 | bed = get_elf_backend_data (ibfd); | |
5930 | ||
5931 | /* Regenerate the segment map if p_paddr is set to 0. */ | |
5932 | if (bed->want_p_paddr_set_to_zero) | |
5933 | goto rewrite; | |
84d1d650 L |
5934 | |
5935 | /* Initialize the segment mark field. */ | |
5936 | for (section = obfd->sections; section != NULL; | |
5937 | section = section->next) | |
5938 | section->segment_mark = FALSE; | |
5939 | ||
5940 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5941 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5942 | i < num_segments; | |
5943 | i++, segment++) | |
5944 | { | |
5f6999aa NC |
5945 | /* PR binutils/3535. The Solaris linker always sets the p_paddr |
5946 | and p_memsz fields of special segments (DYNAMIC, INTERP) to 0 | |
5947 | which severly confuses things, so always regenerate the segment | |
5948 | map in this case. */ | |
5949 | if (segment->p_paddr == 0 | |
5950 | && segment->p_memsz == 0 | |
5951 | && (segment->p_type == PT_INTERP || segment->p_type == PT_DYNAMIC)) | |
cb3ff1e5 | 5952 | goto rewrite; |
5f6999aa | 5953 | |
84d1d650 L |
5954 | for (section = ibfd->sections; |
5955 | section != NULL; section = section->next) | |
5956 | { | |
5957 | /* We mark the output section so that we know it comes | |
5958 | from the input BFD. */ | |
5959 | osec = section->output_section; | |
5960 | if (osec) | |
5961 | osec->segment_mark = TRUE; | |
5962 | ||
5963 | /* Check if this section is covered by the segment. */ | |
5964 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5965 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
5966 | { | |
5967 | /* FIXME: Check if its output section is changed or | |
5968 | removed. What else do we need to check? */ | |
5969 | if (osec == NULL | |
5970 | || section->flags != osec->flags | |
5971 | || section->lma != osec->lma | |
5972 | || section->vma != osec->vma | |
5973 | || section->size != osec->size | |
5974 | || section->rawsize != osec->rawsize | |
5975 | || section->alignment_power != osec->alignment_power) | |
5976 | goto rewrite; | |
5977 | } | |
5978 | } | |
5979 | } | |
5980 | ||
cb3ff1e5 | 5981 | /* Check to see if any output section do not come from the |
84d1d650 L |
5982 | input BFD. */ |
5983 | for (section = obfd->sections; section != NULL; | |
5984 | section = section->next) | |
5985 | { | |
5986 | if (section->segment_mark == FALSE) | |
5987 | goto rewrite; | |
5988 | else | |
5989 | section->segment_mark = FALSE; | |
5990 | } | |
5991 | ||
5992 | return copy_elf_program_header (ibfd, obfd); | |
5993 | } | |
5994 | ||
5995 | rewrite: | |
5996 | return rewrite_elf_program_header (ibfd, obfd); | |
5997 | } | |
5998 | ||
ccd2ec6a L |
5999 | /* Initialize private output section information from input section. */ |
6000 | ||
6001 | bfd_boolean | |
6002 | _bfd_elf_init_private_section_data (bfd *ibfd, | |
6003 | asection *isec, | |
6004 | bfd *obfd, | |
6005 | asection *osec, | |
6006 | struct bfd_link_info *link_info) | |
6007 | ||
6008 | { | |
6009 | Elf_Internal_Shdr *ihdr, *ohdr; | |
6010 | bfd_boolean need_group = link_info == NULL || link_info->relocatable; | |
6011 | ||
6012 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
6013 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
6014 | return TRUE; | |
6015 | ||
e843e0f8 | 6016 | /* Don't copy the output ELF section type from input if the |
d3fd4074 | 6017 | output BFD section flags have been set to something different. |
e843e0f8 L |
6018 | elf_fake_sections will set ELF section type based on BFD |
6019 | section flags. */ | |
42bb2e33 AM |
6020 | if (elf_section_type (osec) == SHT_NULL |
6021 | && (osec->flags == isec->flags || !osec->flags)) | |
6022 | elf_section_type (osec) = elf_section_type (isec); | |
d270463e L |
6023 | |
6024 | /* FIXME: Is this correct for all OS/PROC specific flags? */ | |
6025 | elf_section_flags (osec) |= (elf_section_flags (isec) | |
6026 | & (SHF_MASKOS | SHF_MASKPROC)); | |
ccd2ec6a L |
6027 | |
6028 | /* Set things up for objcopy and relocatable link. The output | |
6029 | SHT_GROUP section will have its elf_next_in_group pointing back | |
6030 | to the input group members. Ignore linker created group section. | |
6031 | See elfNN_ia64_object_p in elfxx-ia64.c. */ | |
ccd2ec6a L |
6032 | if (need_group) |
6033 | { | |
6034 | if (elf_sec_group (isec) == NULL | |
6035 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
6036 | { | |
6037 | if (elf_section_flags (isec) & SHF_GROUP) | |
6038 | elf_section_flags (osec) |= SHF_GROUP; | |
6039 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
9659de1c | 6040 | elf_section_data (osec)->group = elf_section_data (isec)->group; |
ccd2ec6a L |
6041 | } |
6042 | } | |
6043 | ||
6044 | ihdr = &elf_section_data (isec)->this_hdr; | |
6045 | ||
6046 | /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We | |
6047 | don't use the output section of the linked-to section since it | |
6048 | may be NULL at this point. */ | |
6049 | if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0) | |
6050 | { | |
6051 | ohdr = &elf_section_data (osec)->this_hdr; | |
6052 | ohdr->sh_flags |= SHF_LINK_ORDER; | |
6053 | elf_linked_to_section (osec) = elf_linked_to_section (isec); | |
6054 | } | |
6055 | ||
6056 | osec->use_rela_p = isec->use_rela_p; | |
6057 | ||
6058 | return TRUE; | |
6059 | } | |
6060 | ||
252b5132 RH |
6061 | /* Copy private section information. This copies over the entsize |
6062 | field, and sometimes the info field. */ | |
6063 | ||
b34976b6 | 6064 | bfd_boolean |
217aa764 AM |
6065 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
6066 | asection *isec, | |
6067 | bfd *obfd, | |
6068 | asection *osec) | |
252b5132 RH |
6069 | { |
6070 | Elf_Internal_Shdr *ihdr, *ohdr; | |
6071 | ||
6072 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
6073 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 6074 | return TRUE; |
252b5132 | 6075 | |
252b5132 RH |
6076 | ihdr = &elf_section_data (isec)->this_hdr; |
6077 | ohdr = &elf_section_data (osec)->this_hdr; | |
6078 | ||
6079 | ohdr->sh_entsize = ihdr->sh_entsize; | |
6080 | ||
6081 | if (ihdr->sh_type == SHT_SYMTAB | |
6082 | || ihdr->sh_type == SHT_DYNSYM | |
6083 | || ihdr->sh_type == SHT_GNU_verneed | |
6084 | || ihdr->sh_type == SHT_GNU_verdef) | |
6085 | ohdr->sh_info = ihdr->sh_info; | |
6086 | ||
ccd2ec6a L |
6087 | return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec, |
6088 | NULL); | |
252b5132 RH |
6089 | } |
6090 | ||
80fccad2 BW |
6091 | /* Copy private header information. */ |
6092 | ||
6093 | bfd_boolean | |
6094 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
6095 | { | |
30288845 AM |
6096 | asection *isec; |
6097 | ||
80fccad2 BW |
6098 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
6099 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
6100 | return TRUE; | |
6101 | ||
6102 | /* Copy over private BFD data if it has not already been copied. | |
6103 | This must be done here, rather than in the copy_private_bfd_data | |
6104 | entry point, because the latter is called after the section | |
6105 | contents have been set, which means that the program headers have | |
6106 | already been worked out. */ | |
6107 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
6108 | { | |
6109 | if (! copy_private_bfd_data (ibfd, obfd)) | |
6110 | return FALSE; | |
6111 | } | |
6112 | ||
30288845 AM |
6113 | /* _bfd_elf_copy_private_section_data copied over the SHF_GROUP flag |
6114 | but this might be wrong if we deleted the group section. */ | |
6115 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
6116 | if (elf_section_type (isec) == SHT_GROUP | |
6117 | && isec->output_section == NULL) | |
6118 | { | |
6119 | asection *first = elf_next_in_group (isec); | |
6120 | asection *s = first; | |
6121 | while (s != NULL) | |
6122 | { | |
6123 | if (s->output_section != NULL) | |
6124 | { | |
6125 | elf_section_flags (s->output_section) &= ~SHF_GROUP; | |
6126 | elf_group_name (s->output_section) = NULL; | |
6127 | } | |
6128 | s = elf_next_in_group (s); | |
6129 | if (s == first) | |
6130 | break; | |
6131 | } | |
6132 | } | |
6133 | ||
80fccad2 BW |
6134 | return TRUE; |
6135 | } | |
6136 | ||
252b5132 RH |
6137 | /* Copy private symbol information. If this symbol is in a section |
6138 | which we did not map into a BFD section, try to map the section | |
6139 | index correctly. We use special macro definitions for the mapped | |
6140 | section indices; these definitions are interpreted by the | |
6141 | swap_out_syms function. */ | |
6142 | ||
9ad5cbcf AM |
6143 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
6144 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
6145 | #define MAP_STRTAB (SHN_HIOS + 3) | |
6146 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
6147 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 6148 | |
b34976b6 | 6149 | bfd_boolean |
217aa764 AM |
6150 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
6151 | asymbol *isymarg, | |
6152 | bfd *obfd, | |
6153 | asymbol *osymarg) | |
252b5132 RH |
6154 | { |
6155 | elf_symbol_type *isym, *osym; | |
6156 | ||
6157 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
6158 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 6159 | return TRUE; |
252b5132 RH |
6160 | |
6161 | isym = elf_symbol_from (ibfd, isymarg); | |
6162 | osym = elf_symbol_from (obfd, osymarg); | |
6163 | ||
6164 | if (isym != NULL | |
8424d8f5 | 6165 | && isym->internal_elf_sym.st_shndx != 0 |
252b5132 RH |
6166 | && osym != NULL |
6167 | && bfd_is_abs_section (isym->symbol.section)) | |
6168 | { | |
6169 | unsigned int shndx; | |
6170 | ||
6171 | shndx = isym->internal_elf_sym.st_shndx; | |
6172 | if (shndx == elf_onesymtab (ibfd)) | |
6173 | shndx = MAP_ONESYMTAB; | |
6174 | else if (shndx == elf_dynsymtab (ibfd)) | |
6175 | shndx = MAP_DYNSYMTAB; | |
6176 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
6177 | shndx = MAP_STRTAB; | |
6178 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
6179 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
6180 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
6181 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
6182 | osym->internal_elf_sym.st_shndx = shndx; |
6183 | } | |
6184 | ||
b34976b6 | 6185 | return TRUE; |
252b5132 RH |
6186 | } |
6187 | ||
6188 | /* Swap out the symbols. */ | |
6189 | ||
b34976b6 | 6190 | static bfd_boolean |
217aa764 AM |
6191 | swap_out_syms (bfd *abfd, |
6192 | struct bfd_strtab_hash **sttp, | |
6193 | int relocatable_p) | |
252b5132 | 6194 | { |
9c5bfbb7 | 6195 | const struct elf_backend_data *bed; |
079e9a2f AM |
6196 | int symcount; |
6197 | asymbol **syms; | |
6198 | struct bfd_strtab_hash *stt; | |
6199 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 6200 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 6201 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
6202 | bfd_byte *outbound_syms; |
6203 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
6204 | int idx; |
6205 | bfd_size_type amt; | |
174fd7f9 | 6206 | bfd_boolean name_local_sections; |
252b5132 RH |
6207 | |
6208 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 6209 | return FALSE; |
252b5132 | 6210 | |
c044fabd | 6211 | /* Dump out the symtabs. */ |
079e9a2f AM |
6212 | stt = _bfd_elf_stringtab_init (); |
6213 | if (stt == NULL) | |
b34976b6 | 6214 | return FALSE; |
252b5132 | 6215 | |
079e9a2f AM |
6216 | bed = get_elf_backend_data (abfd); |
6217 | symcount = bfd_get_symcount (abfd); | |
6218 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6219 | symtab_hdr->sh_type = SHT_SYMTAB; | |
6220 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
6221 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
6222 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
72de5009 | 6223 | symtab_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align; |
079e9a2f AM |
6224 | |
6225 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
6226 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
6227 | ||
d0fb9a8d | 6228 | outbound_syms = bfd_alloc2 (abfd, 1 + symcount, bed->s->sizeof_sym); |
079e9a2f | 6229 | if (outbound_syms == NULL) |
5ed6aba4 NC |
6230 | { |
6231 | _bfd_stringtab_free (stt); | |
6232 | return FALSE; | |
6233 | } | |
217aa764 | 6234 | symtab_hdr->contents = outbound_syms; |
252b5132 | 6235 | |
9ad5cbcf AM |
6236 | outbound_shndx = NULL; |
6237 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
6238 | if (symtab_shndx_hdr->sh_name != 0) | |
6239 | { | |
6240 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
d0fb9a8d JJ |
6241 | outbound_shndx = bfd_zalloc2 (abfd, 1 + symcount, |
6242 | sizeof (Elf_External_Sym_Shndx)); | |
9ad5cbcf | 6243 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
6244 | { |
6245 | _bfd_stringtab_free (stt); | |
6246 | return FALSE; | |
6247 | } | |
6248 | ||
9ad5cbcf AM |
6249 | symtab_shndx_hdr->contents = outbound_shndx; |
6250 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
6251 | symtab_shndx_hdr->sh_size = amt; | |
6252 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
6253 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
6254 | } | |
6255 | ||
589e6347 | 6256 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
6257 | { |
6258 | /* Fill in zeroth symbol and swap it out. */ | |
6259 | Elf_Internal_Sym sym; | |
6260 | sym.st_name = 0; | |
6261 | sym.st_value = 0; | |
6262 | sym.st_size = 0; | |
6263 | sym.st_info = 0; | |
6264 | sym.st_other = 0; | |
6265 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 6266 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6267 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6268 | if (outbound_shndx != NULL) |
6269 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6270 | } |
252b5132 | 6271 | |
174fd7f9 RS |
6272 | name_local_sections |
6273 | = (bed->elf_backend_name_local_section_symbols | |
6274 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
6275 | ||
079e9a2f AM |
6276 | syms = bfd_get_outsymbols (abfd); |
6277 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 6278 | { |
252b5132 | 6279 | Elf_Internal_Sym sym; |
079e9a2f AM |
6280 | bfd_vma value = syms[idx]->value; |
6281 | elf_symbol_type *type_ptr; | |
6282 | flagword flags = syms[idx]->flags; | |
6283 | int type; | |
252b5132 | 6284 | |
174fd7f9 RS |
6285 | if (!name_local_sections |
6286 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
6287 | { |
6288 | /* Local section symbols have no name. */ | |
6289 | sym.st_name = 0; | |
6290 | } | |
6291 | else | |
6292 | { | |
6293 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
6294 | syms[idx]->name, | |
b34976b6 | 6295 | TRUE, FALSE); |
079e9a2f | 6296 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
6297 | { |
6298 | _bfd_stringtab_free (stt); | |
6299 | return FALSE; | |
6300 | } | |
079e9a2f | 6301 | } |
252b5132 | 6302 | |
079e9a2f | 6303 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 6304 | |
079e9a2f AM |
6305 | if ((flags & BSF_SECTION_SYM) == 0 |
6306 | && bfd_is_com_section (syms[idx]->section)) | |
6307 | { | |
6308 | /* ELF common symbols put the alignment into the `value' field, | |
6309 | and the size into the `size' field. This is backwards from | |
6310 | how BFD handles it, so reverse it here. */ | |
6311 | sym.st_size = value; | |
6312 | if (type_ptr == NULL | |
6313 | || type_ptr->internal_elf_sym.st_value == 0) | |
6314 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
6315 | else | |
6316 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
6317 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
6318 | (abfd, syms[idx]->section); | |
6319 | } | |
6320 | else | |
6321 | { | |
6322 | asection *sec = syms[idx]->section; | |
cb33740c | 6323 | unsigned int shndx; |
252b5132 | 6324 | |
079e9a2f AM |
6325 | if (sec->output_section) |
6326 | { | |
6327 | value += sec->output_offset; | |
6328 | sec = sec->output_section; | |
6329 | } | |
589e6347 | 6330 | |
079e9a2f AM |
6331 | /* Don't add in the section vma for relocatable output. */ |
6332 | if (! relocatable_p) | |
6333 | value += sec->vma; | |
6334 | sym.st_value = value; | |
6335 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
6336 | ||
6337 | if (bfd_is_abs_section (sec) | |
6338 | && type_ptr != NULL | |
6339 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
6340 | { | |
6341 | /* This symbol is in a real ELF section which we did | |
6342 | not create as a BFD section. Undo the mapping done | |
6343 | by copy_private_symbol_data. */ | |
6344 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
6345 | switch (shndx) | |
6346 | { | |
6347 | case MAP_ONESYMTAB: | |
6348 | shndx = elf_onesymtab (abfd); | |
6349 | break; | |
6350 | case MAP_DYNSYMTAB: | |
6351 | shndx = elf_dynsymtab (abfd); | |
6352 | break; | |
6353 | case MAP_STRTAB: | |
6354 | shndx = elf_tdata (abfd)->strtab_section; | |
6355 | break; | |
6356 | case MAP_SHSTRTAB: | |
6357 | shndx = elf_tdata (abfd)->shstrtab_section; | |
6358 | break; | |
9ad5cbcf AM |
6359 | case MAP_SYM_SHNDX: |
6360 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
6361 | break; | |
079e9a2f AM |
6362 | default: |
6363 | break; | |
6364 | } | |
6365 | } | |
6366 | else | |
6367 | { | |
6368 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 6369 | |
cb33740c | 6370 | if (shndx == SHN_BAD) |
079e9a2f AM |
6371 | { |
6372 | asection *sec2; | |
6373 | ||
6374 | /* Writing this would be a hell of a lot easier if | |
6375 | we had some decent documentation on bfd, and | |
6376 | knew what to expect of the library, and what to | |
6377 | demand of applications. For example, it | |
6378 | appears that `objcopy' might not set the | |
6379 | section of a symbol to be a section that is | |
6380 | actually in the output file. */ | |
6381 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
6382 | if (sec2 == NULL) |
6383 | { | |
6384 | _bfd_error_handler (_("\ | |
6385 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
6386 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
6387 | sec->name); | |
811072d8 | 6388 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 6389 | _bfd_stringtab_free (stt); |
589e6347 NC |
6390 | return FALSE; |
6391 | } | |
811072d8 | 6392 | |
079e9a2f | 6393 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
cb33740c | 6394 | BFD_ASSERT (shndx != SHN_BAD); |
079e9a2f AM |
6395 | } |
6396 | } | |
252b5132 | 6397 | |
079e9a2f AM |
6398 | sym.st_shndx = shndx; |
6399 | } | |
252b5132 | 6400 | |
13ae64f3 JJ |
6401 | if ((flags & BSF_THREAD_LOCAL) != 0) |
6402 | type = STT_TLS; | |
d8045f23 NC |
6403 | else if ((flags & BSF_GNU_INDIRECT_FUNCTION) != 0) |
6404 | type = STT_GNU_IFUNC; | |
13ae64f3 | 6405 | else if ((flags & BSF_FUNCTION) != 0) |
079e9a2f AM |
6406 | type = STT_FUNC; |
6407 | else if ((flags & BSF_OBJECT) != 0) | |
6408 | type = STT_OBJECT; | |
d9352518 DB |
6409 | else if ((flags & BSF_RELC) != 0) |
6410 | type = STT_RELC; | |
6411 | else if ((flags & BSF_SRELC) != 0) | |
6412 | type = STT_SRELC; | |
079e9a2f AM |
6413 | else |
6414 | type = STT_NOTYPE; | |
252b5132 | 6415 | |
13ae64f3 JJ |
6416 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
6417 | type = STT_TLS; | |
6418 | ||
589e6347 | 6419 | /* Processor-specific types. */ |
079e9a2f AM |
6420 | if (type_ptr != NULL |
6421 | && bed->elf_backend_get_symbol_type) | |
6422 | type = ((*bed->elf_backend_get_symbol_type) | |
6423 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 6424 | |
079e9a2f AM |
6425 | if (flags & BSF_SECTION_SYM) |
6426 | { | |
6427 | if (flags & BSF_GLOBAL) | |
6428 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6429 | else | |
6430 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
6431 | } | |
6432 | else if (bfd_is_com_section (syms[idx]->section)) | |
0a40daed | 6433 | { |
504b7d20 | 6434 | #ifdef USE_STT_COMMON |
0a40daed MK |
6435 | if (type == STT_OBJECT) |
6436 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_COMMON); | |
6437 | else | |
504b7d20 | 6438 | #endif |
c91e322a | 6439 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); |
0a40daed | 6440 | } |
079e9a2f AM |
6441 | else if (bfd_is_und_section (syms[idx]->section)) |
6442 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
6443 | ? STB_WEAK | |
6444 | : STB_GLOBAL), | |
6445 | type); | |
6446 | else if (flags & BSF_FILE) | |
6447 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
6448 | else | |
6449 | { | |
6450 | int bind = STB_LOCAL; | |
252b5132 | 6451 | |
079e9a2f AM |
6452 | if (flags & BSF_LOCAL) |
6453 | bind = STB_LOCAL; | |
3e7a7d11 NC |
6454 | else if (flags & BSF_GNU_UNIQUE) |
6455 | bind = STB_GNU_UNIQUE; | |
079e9a2f AM |
6456 | else if (flags & BSF_WEAK) |
6457 | bind = STB_WEAK; | |
6458 | else if (flags & BSF_GLOBAL) | |
6459 | bind = STB_GLOBAL; | |
252b5132 | 6460 | |
079e9a2f AM |
6461 | sym.st_info = ELF_ST_INFO (bind, type); |
6462 | } | |
252b5132 | 6463 | |
079e9a2f AM |
6464 | if (type_ptr != NULL) |
6465 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6466 | else | |
6467 | sym.st_other = 0; | |
252b5132 | 6468 | |
9ad5cbcf | 6469 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6470 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6471 | if (outbound_shndx != NULL) |
6472 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6473 | } |
252b5132 | 6474 | |
079e9a2f AM |
6475 | *sttp = stt; |
6476 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6477 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6478 | |
079e9a2f AM |
6479 | symstrtab_hdr->sh_flags = 0; |
6480 | symstrtab_hdr->sh_addr = 0; | |
6481 | symstrtab_hdr->sh_entsize = 0; | |
6482 | symstrtab_hdr->sh_link = 0; | |
6483 | symstrtab_hdr->sh_info = 0; | |
6484 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6485 | |
b34976b6 | 6486 | return TRUE; |
252b5132 RH |
6487 | } |
6488 | ||
6489 | /* Return the number of bytes required to hold the symtab vector. | |
6490 | ||
6491 | Note that we base it on the count plus 1, since we will null terminate | |
6492 | the vector allocated based on this size. However, the ELF symbol table | |
6493 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6494 | ||
6495 | long | |
217aa764 | 6496 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6497 | { |
6498 | long symcount; | |
6499 | long symtab_size; | |
6500 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6501 | ||
6502 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6503 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6504 | if (symcount > 0) | |
6505 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6506 | |
6507 | return symtab_size; | |
6508 | } | |
6509 | ||
6510 | long | |
217aa764 | 6511 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6512 | { |
6513 | long symcount; | |
6514 | long symtab_size; | |
6515 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6516 | ||
6517 | if (elf_dynsymtab (abfd) == 0) | |
6518 | { | |
6519 | bfd_set_error (bfd_error_invalid_operation); | |
6520 | return -1; | |
6521 | } | |
6522 | ||
6523 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6524 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6525 | if (symcount > 0) | |
6526 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6527 | |
6528 | return symtab_size; | |
6529 | } | |
6530 | ||
6531 | long | |
217aa764 AM |
6532 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6533 | sec_ptr asect) | |
252b5132 RH |
6534 | { |
6535 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6536 | } | |
6537 | ||
6538 | /* Canonicalize the relocs. */ | |
6539 | ||
6540 | long | |
217aa764 AM |
6541 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6542 | sec_ptr section, | |
6543 | arelent **relptr, | |
6544 | asymbol **symbols) | |
252b5132 RH |
6545 | { |
6546 | arelent *tblptr; | |
6547 | unsigned int i; | |
9c5bfbb7 | 6548 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6549 | |
b34976b6 | 6550 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6551 | return -1; |
6552 | ||
6553 | tblptr = section->relocation; | |
6554 | for (i = 0; i < section->reloc_count; i++) | |
6555 | *relptr++ = tblptr++; | |
6556 | ||
6557 | *relptr = NULL; | |
6558 | ||
6559 | return section->reloc_count; | |
6560 | } | |
6561 | ||
6562 | long | |
6cee3f79 | 6563 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6564 | { |
9c5bfbb7 | 6565 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6566 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6567 | |
6568 | if (symcount >= 0) | |
6569 | bfd_get_symcount (abfd) = symcount; | |
6570 | return symcount; | |
6571 | } | |
6572 | ||
6573 | long | |
217aa764 AM |
6574 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6575 | asymbol **allocation) | |
252b5132 | 6576 | { |
9c5bfbb7 | 6577 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6578 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6579 | |
6580 | if (symcount >= 0) | |
6581 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6582 | return symcount; | |
252b5132 RH |
6583 | } |
6584 | ||
8615f3f2 AM |
6585 | /* Return the size required for the dynamic reloc entries. Any loadable |
6586 | section that was actually installed in the BFD, and has type SHT_REL | |
6587 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6588 | dynamic reloc section. */ | |
252b5132 RH |
6589 | |
6590 | long | |
217aa764 | 6591 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6592 | { |
6593 | long ret; | |
6594 | asection *s; | |
6595 | ||
6596 | if (elf_dynsymtab (abfd) == 0) | |
6597 | { | |
6598 | bfd_set_error (bfd_error_invalid_operation); | |
6599 | return -1; | |
6600 | } | |
6601 | ||
6602 | ret = sizeof (arelent *); | |
6603 | for (s = abfd->sections; s != NULL; s = s->next) | |
266b05cf | 6604 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
252b5132 RH |
6605 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6606 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6607 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6608 | * sizeof (arelent *)); |
6609 | ||
6610 | return ret; | |
6611 | } | |
6612 | ||
8615f3f2 AM |
6613 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6614 | dynamic relocations as a single block, although they are actually | |
6615 | associated with particular sections; the interface, which was | |
6616 | designed for SunOS style shared libraries, expects that there is only | |
6617 | one set of dynamic relocs. Any loadable section that was actually | |
6618 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6619 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6620 | |
6621 | long | |
217aa764 AM |
6622 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6623 | arelent **storage, | |
6624 | asymbol **syms) | |
252b5132 | 6625 | { |
217aa764 | 6626 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6627 | asection *s; |
6628 | long ret; | |
6629 | ||
6630 | if (elf_dynsymtab (abfd) == 0) | |
6631 | { | |
6632 | bfd_set_error (bfd_error_invalid_operation); | |
6633 | return -1; | |
6634 | } | |
6635 | ||
6636 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6637 | ret = 0; | |
6638 | for (s = abfd->sections; s != NULL; s = s->next) | |
6639 | { | |
266b05cf | 6640 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
252b5132 RH |
6641 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6642 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6643 | { | |
6644 | arelent *p; | |
6645 | long count, i; | |
6646 | ||
b34976b6 | 6647 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6648 | return -1; |
eea6121a | 6649 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6650 | p = s->relocation; |
6651 | for (i = 0; i < count; i++) | |
6652 | *storage++ = p++; | |
6653 | ret += count; | |
6654 | } | |
6655 | } | |
6656 | ||
6657 | *storage = NULL; | |
6658 | ||
6659 | return ret; | |
6660 | } | |
6661 | \f | |
6662 | /* Read in the version information. */ | |
6663 | ||
b34976b6 | 6664 | bfd_boolean |
fc0e6df6 | 6665 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6666 | { |
6667 | bfd_byte *contents = NULL; | |
fc0e6df6 PB |
6668 | unsigned int freeidx = 0; |
6669 | ||
6670 | if (elf_dynverref (abfd) != 0) | |
6671 | { | |
6672 | Elf_Internal_Shdr *hdr; | |
6673 | Elf_External_Verneed *everneed; | |
6674 | Elf_Internal_Verneed *iverneed; | |
6675 | unsigned int i; | |
d0fb9a8d | 6676 | bfd_byte *contents_end; |
fc0e6df6 PB |
6677 | |
6678 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6679 | ||
d0fb9a8d JJ |
6680 | elf_tdata (abfd)->verref = bfd_zalloc2 (abfd, hdr->sh_info, |
6681 | sizeof (Elf_Internal_Verneed)); | |
fc0e6df6 PB |
6682 | if (elf_tdata (abfd)->verref == NULL) |
6683 | goto error_return; | |
6684 | ||
6685 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6686 | ||
6687 | contents = bfd_malloc (hdr->sh_size); | |
6688 | if (contents == NULL) | |
d0fb9a8d JJ |
6689 | { |
6690 | error_return_verref: | |
6691 | elf_tdata (abfd)->verref = NULL; | |
6692 | elf_tdata (abfd)->cverrefs = 0; | |
6693 | goto error_return; | |
6694 | } | |
fc0e6df6 PB |
6695 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
6696 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
d0fb9a8d | 6697 | goto error_return_verref; |
fc0e6df6 | 6698 | |
d0fb9a8d JJ |
6699 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed)) |
6700 | goto error_return_verref; | |
6701 | ||
6702 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
6703 | == sizeof (Elf_External_Vernaux)); | |
6704 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
6705 | everneed = (Elf_External_Verneed *) contents; |
6706 | iverneed = elf_tdata (abfd)->verref; | |
6707 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6708 | { | |
6709 | Elf_External_Vernaux *evernaux; | |
6710 | Elf_Internal_Vernaux *ivernaux; | |
6711 | unsigned int j; | |
6712 | ||
6713 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6714 | ||
6715 | iverneed->vn_bfd = abfd; | |
6716 | ||
6717 | iverneed->vn_filename = | |
6718 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6719 | iverneed->vn_file); | |
6720 | if (iverneed->vn_filename == NULL) | |
d0fb9a8d | 6721 | goto error_return_verref; |
fc0e6df6 | 6722 | |
d0fb9a8d JJ |
6723 | if (iverneed->vn_cnt == 0) |
6724 | iverneed->vn_auxptr = NULL; | |
6725 | else | |
6726 | { | |
6727 | iverneed->vn_auxptr = bfd_alloc2 (abfd, iverneed->vn_cnt, | |
6728 | sizeof (Elf_Internal_Vernaux)); | |
6729 | if (iverneed->vn_auxptr == NULL) | |
6730 | goto error_return_verref; | |
6731 | } | |
6732 | ||
6733 | if (iverneed->vn_aux | |
6734 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6735 | goto error_return_verref; | |
fc0e6df6 PB |
6736 | |
6737 | evernaux = ((Elf_External_Vernaux *) | |
6738 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6739 | ivernaux = iverneed->vn_auxptr; | |
6740 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6741 | { | |
6742 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6743 | ||
6744 | ivernaux->vna_nodename = | |
6745 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6746 | ivernaux->vna_name); | |
6747 | if (ivernaux->vna_nodename == NULL) | |
d0fb9a8d | 6748 | goto error_return_verref; |
fc0e6df6 PB |
6749 | |
6750 | if (j + 1 < iverneed->vn_cnt) | |
6751 | ivernaux->vna_nextptr = ivernaux + 1; | |
6752 | else | |
6753 | ivernaux->vna_nextptr = NULL; | |
6754 | ||
d0fb9a8d JJ |
6755 | if (ivernaux->vna_next |
6756 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
6757 | goto error_return_verref; | |
6758 | ||
fc0e6df6 PB |
6759 | evernaux = ((Elf_External_Vernaux *) |
6760 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6761 | ||
6762 | if (ivernaux->vna_other > freeidx) | |
6763 | freeidx = ivernaux->vna_other; | |
6764 | } | |
6765 | ||
6766 | if (i + 1 < hdr->sh_info) | |
6767 | iverneed->vn_nextref = iverneed + 1; | |
6768 | else | |
6769 | iverneed->vn_nextref = NULL; | |
6770 | ||
d0fb9a8d JJ |
6771 | if (iverneed->vn_next |
6772 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6773 | goto error_return_verref; | |
6774 | ||
fc0e6df6 PB |
6775 | everneed = ((Elf_External_Verneed *) |
6776 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6777 | } | |
6778 | ||
6779 | free (contents); | |
6780 | contents = NULL; | |
6781 | } | |
252b5132 RH |
6782 | |
6783 | if (elf_dynverdef (abfd) != 0) | |
6784 | { | |
6785 | Elf_Internal_Shdr *hdr; | |
6786 | Elf_External_Verdef *everdef; | |
6787 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6788 | Elf_Internal_Verdef *iverdefarr; |
6789 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6790 | unsigned int i; |
062e2358 | 6791 | unsigned int maxidx; |
d0fb9a8d | 6792 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
6793 | |
6794 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6795 | ||
217aa764 | 6796 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6797 | if (contents == NULL) |
6798 | goto error_return; | |
6799 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6800 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6801 | goto error_return; |
6802 | ||
d0fb9a8d JJ |
6803 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef)) |
6804 | goto error_return; | |
6805 | ||
6806 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
6807 | >= sizeof (Elf_External_Verdaux)); | |
6808 | contents_end_def = contents + hdr->sh_size | |
6809 | - sizeof (Elf_External_Verdef); | |
6810 | contents_end_aux = contents + hdr->sh_size | |
6811 | - sizeof (Elf_External_Verdaux); | |
6812 | ||
f631889e UD |
6813 | /* We know the number of entries in the section but not the maximum |
6814 | index. Therefore we have to run through all entries and find | |
6815 | the maximum. */ | |
252b5132 | 6816 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6817 | maxidx = 0; |
6818 | for (i = 0; i < hdr->sh_info; ++i) | |
6819 | { | |
6820 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6821 | ||
062e2358 AM |
6822 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6823 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 6824 | |
d0fb9a8d JJ |
6825 | if (iverdefmem.vd_next |
6826 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
6827 | goto error_return; | |
6828 | ||
f631889e UD |
6829 | everdef = ((Elf_External_Verdef *) |
6830 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6831 | } | |
6832 | ||
fc0e6df6 PB |
6833 | if (default_imported_symver) |
6834 | { | |
6835 | if (freeidx > maxidx) | |
6836 | maxidx = ++freeidx; | |
6837 | else | |
6838 | freeidx = ++maxidx; | |
6839 | } | |
d0fb9a8d JJ |
6840 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, maxidx, |
6841 | sizeof (Elf_Internal_Verdef)); | |
f631889e UD |
6842 | if (elf_tdata (abfd)->verdef == NULL) |
6843 | goto error_return; | |
6844 | ||
6845 | elf_tdata (abfd)->cverdefs = maxidx; | |
6846 | ||
6847 | everdef = (Elf_External_Verdef *) contents; | |
6848 | iverdefarr = elf_tdata (abfd)->verdef; | |
6849 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6850 | { |
6851 | Elf_External_Verdaux *everdaux; | |
6852 | Elf_Internal_Verdaux *iverdaux; | |
6853 | unsigned int j; | |
6854 | ||
f631889e UD |
6855 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6856 | ||
d0fb9a8d JJ |
6857 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
6858 | { | |
6859 | error_return_verdef: | |
6860 | elf_tdata (abfd)->verdef = NULL; | |
6861 | elf_tdata (abfd)->cverdefs = 0; | |
6862 | goto error_return; | |
6863 | } | |
6864 | ||
f631889e UD |
6865 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
6866 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6867 | |
6868 | iverdef->vd_bfd = abfd; | |
6869 | ||
d0fb9a8d JJ |
6870 | if (iverdef->vd_cnt == 0) |
6871 | iverdef->vd_auxptr = NULL; | |
6872 | else | |
6873 | { | |
6874 | iverdef->vd_auxptr = bfd_alloc2 (abfd, iverdef->vd_cnt, | |
6875 | sizeof (Elf_Internal_Verdaux)); | |
6876 | if (iverdef->vd_auxptr == NULL) | |
6877 | goto error_return_verdef; | |
6878 | } | |
6879 | ||
6880 | if (iverdef->vd_aux | |
6881 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
6882 | goto error_return_verdef; | |
252b5132 RH |
6883 | |
6884 | everdaux = ((Elf_External_Verdaux *) | |
6885 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6886 | iverdaux = iverdef->vd_auxptr; | |
6887 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6888 | { | |
6889 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6890 | ||
6891 | iverdaux->vda_nodename = | |
6892 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6893 | iverdaux->vda_name); | |
6894 | if (iverdaux->vda_nodename == NULL) | |
d0fb9a8d | 6895 | goto error_return_verdef; |
252b5132 RH |
6896 | |
6897 | if (j + 1 < iverdef->vd_cnt) | |
6898 | iverdaux->vda_nextptr = iverdaux + 1; | |
6899 | else | |
6900 | iverdaux->vda_nextptr = NULL; | |
6901 | ||
d0fb9a8d JJ |
6902 | if (iverdaux->vda_next |
6903 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
6904 | goto error_return_verdef; | |
6905 | ||
252b5132 RH |
6906 | everdaux = ((Elf_External_Verdaux *) |
6907 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6908 | } | |
6909 | ||
d0fb9a8d JJ |
6910 | if (iverdef->vd_cnt) |
6911 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 6912 | |
d0fb9a8d | 6913 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 RH |
6914 | iverdef->vd_nextdef = iverdef + 1; |
6915 | else | |
6916 | iverdef->vd_nextdef = NULL; | |
6917 | ||
6918 | everdef = ((Elf_External_Verdef *) | |
6919 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6920 | } | |
6921 | ||
6922 | free (contents); | |
6923 | contents = NULL; | |
6924 | } | |
fc0e6df6 | 6925 | else if (default_imported_symver) |
252b5132 | 6926 | { |
fc0e6df6 PB |
6927 | if (freeidx < 3) |
6928 | freeidx = 3; | |
6929 | else | |
6930 | freeidx++; | |
252b5132 | 6931 | |
d0fb9a8d JJ |
6932 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, freeidx, |
6933 | sizeof (Elf_Internal_Verdef)); | |
fc0e6df6 | 6934 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
6935 | goto error_return; |
6936 | ||
fc0e6df6 PB |
6937 | elf_tdata (abfd)->cverdefs = freeidx; |
6938 | } | |
252b5132 | 6939 | |
fc0e6df6 PB |
6940 | /* Create a default version based on the soname. */ |
6941 | if (default_imported_symver) | |
6942 | { | |
6943 | Elf_Internal_Verdef *iverdef; | |
6944 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6945 | |
fc0e6df6 | 6946 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6947 | |
fc0e6df6 PB |
6948 | iverdef->vd_version = VER_DEF_CURRENT; |
6949 | iverdef->vd_flags = 0; | |
6950 | iverdef->vd_ndx = freeidx; | |
6951 | iverdef->vd_cnt = 1; | |
252b5132 | 6952 | |
fc0e6df6 | 6953 | iverdef->vd_bfd = abfd; |
252b5132 | 6954 | |
fc0e6df6 PB |
6955 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6956 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 6957 | goto error_return_verdef; |
fc0e6df6 | 6958 | iverdef->vd_nextdef = NULL; |
d0fb9a8d JJ |
6959 | iverdef->vd_auxptr = bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux)); |
6960 | if (iverdef->vd_auxptr == NULL) | |
6961 | goto error_return_verdef; | |
252b5132 | 6962 | |
fc0e6df6 PB |
6963 | iverdaux = iverdef->vd_auxptr; |
6964 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6965 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
6966 | } |
6967 | ||
b34976b6 | 6968 | return TRUE; |
252b5132 RH |
6969 | |
6970 | error_return: | |
5ed6aba4 | 6971 | if (contents != NULL) |
252b5132 | 6972 | free (contents); |
b34976b6 | 6973 | return FALSE; |
252b5132 RH |
6974 | } |
6975 | \f | |
6976 | asymbol * | |
217aa764 | 6977 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6978 | { |
6979 | elf_symbol_type *newsym; | |
dc810e39 | 6980 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6981 | |
217aa764 | 6982 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6983 | if (!newsym) |
6984 | return NULL; | |
6985 | else | |
6986 | { | |
6987 | newsym->symbol.the_bfd = abfd; | |
6988 | return &newsym->symbol; | |
6989 | } | |
6990 | } | |
6991 | ||
6992 | void | |
217aa764 AM |
6993 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6994 | asymbol *symbol, | |
6995 | symbol_info *ret) | |
252b5132 RH |
6996 | { |
6997 | bfd_symbol_info (symbol, ret); | |
6998 | } | |
6999 | ||
7000 | /* Return whether a symbol name implies a local symbol. Most targets | |
7001 | use this function for the is_local_label_name entry point, but some | |
7002 | override it. */ | |
7003 | ||
b34976b6 | 7004 | bfd_boolean |
217aa764 AM |
7005 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
7006 | const char *name) | |
252b5132 RH |
7007 | { |
7008 | /* Normal local symbols start with ``.L''. */ | |
7009 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 7010 | return TRUE; |
252b5132 RH |
7011 | |
7012 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
7013 | DWARF debugging symbols starting with ``..''. */ | |
7014 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 7015 | return TRUE; |
252b5132 RH |
7016 | |
7017 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
7018 | emitting DWARF debugging output. I suspect this is actually a | |
7019 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
7020 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
7021 | underscore to be emitted on some ELF targets). For ease of use, | |
7022 | we treat such symbols as local. */ | |
7023 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 7024 | return TRUE; |
252b5132 | 7025 | |
b34976b6 | 7026 | return FALSE; |
252b5132 RH |
7027 | } |
7028 | ||
7029 | alent * | |
217aa764 AM |
7030 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
7031 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
7032 | { |
7033 | abort (); | |
7034 | return NULL; | |
7035 | } | |
7036 | ||
b34976b6 | 7037 | bfd_boolean |
217aa764 AM |
7038 | _bfd_elf_set_arch_mach (bfd *abfd, |
7039 | enum bfd_architecture arch, | |
7040 | unsigned long machine) | |
252b5132 RH |
7041 | { |
7042 | /* If this isn't the right architecture for this backend, and this | |
7043 | isn't the generic backend, fail. */ | |
7044 | if (arch != get_elf_backend_data (abfd)->arch | |
7045 | && arch != bfd_arch_unknown | |
7046 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 7047 | return FALSE; |
252b5132 RH |
7048 | |
7049 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
7050 | } | |
7051 | ||
d1fad7c6 NC |
7052 | /* Find the function to a particular section and offset, |
7053 | for error reporting. */ | |
252b5132 | 7054 | |
b34976b6 | 7055 | static bfd_boolean |
b9d678e0 | 7056 | elf_find_function (bfd *abfd, |
217aa764 AM |
7057 | asection *section, |
7058 | asymbol **symbols, | |
7059 | bfd_vma offset, | |
7060 | const char **filename_ptr, | |
7061 | const char **functionname_ptr) | |
252b5132 | 7062 | { |
252b5132 | 7063 | const char *filename; |
57426232 | 7064 | asymbol *func, *file; |
252b5132 RH |
7065 | bfd_vma low_func; |
7066 | asymbol **p; | |
57426232 JB |
7067 | /* ??? Given multiple file symbols, it is impossible to reliably |
7068 | choose the right file name for global symbols. File symbols are | |
7069 | local symbols, and thus all file symbols must sort before any | |
7070 | global symbols. The ELF spec may be interpreted to say that a | |
7071 | file symbol must sort before other local symbols, but currently | |
7072 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
7073 | make a better choice of file name for local symbols by ignoring | |
7074 | file symbols appearing after a given local symbol. */ | |
7075 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
b9d678e0 | 7076 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 7077 | |
252b5132 RH |
7078 | filename = NULL; |
7079 | func = NULL; | |
57426232 | 7080 | file = NULL; |
252b5132 | 7081 | low_func = 0; |
57426232 | 7082 | state = nothing_seen; |
252b5132 RH |
7083 | |
7084 | for (p = symbols; *p != NULL; p++) | |
7085 | { | |
7086 | elf_symbol_type *q; | |
b9d678e0 | 7087 | unsigned int type; |
252b5132 RH |
7088 | |
7089 | q = (elf_symbol_type *) *p; | |
7090 | ||
b9d678e0 L |
7091 | type = ELF_ST_TYPE (q->internal_elf_sym.st_info); |
7092 | switch (type) | |
252b5132 | 7093 | { |
252b5132 | 7094 | case STT_FILE: |
57426232 JB |
7095 | file = &q->symbol; |
7096 | if (state == symbol_seen) | |
7097 | state = file_after_symbol_seen; | |
7098 | continue; | |
b9d678e0 L |
7099 | default: |
7100 | if (!bed->is_function_type (type)) | |
7101 | break; | |
252b5132 | 7102 | case STT_NOTYPE: |
6b40fcba | 7103 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
7104 | && q->symbol.value >= low_func |
7105 | && q->symbol.value <= offset) | |
7106 | { | |
7107 | func = (asymbol *) q; | |
7108 | low_func = q->symbol.value; | |
a1923858 AM |
7109 | filename = NULL; |
7110 | if (file != NULL | |
7111 | && (ELF_ST_BIND (q->internal_elf_sym.st_info) == STB_LOCAL | |
7112 | || state != file_after_symbol_seen)) | |
57426232 | 7113 | filename = bfd_asymbol_name (file); |
252b5132 RH |
7114 | } |
7115 | break; | |
7116 | } | |
57426232 JB |
7117 | if (state == nothing_seen) |
7118 | state = symbol_seen; | |
252b5132 RH |
7119 | } |
7120 | ||
7121 | if (func == NULL) | |
b34976b6 | 7122 | return FALSE; |
252b5132 | 7123 | |
d1fad7c6 NC |
7124 | if (filename_ptr) |
7125 | *filename_ptr = filename; | |
7126 | if (functionname_ptr) | |
7127 | *functionname_ptr = bfd_asymbol_name (func); | |
7128 | ||
b34976b6 | 7129 | return TRUE; |
d1fad7c6 NC |
7130 | } |
7131 | ||
7132 | /* Find the nearest line to a particular section and offset, | |
7133 | for error reporting. */ | |
7134 | ||
b34976b6 | 7135 | bfd_boolean |
217aa764 AM |
7136 | _bfd_elf_find_nearest_line (bfd *abfd, |
7137 | asection *section, | |
7138 | asymbol **symbols, | |
7139 | bfd_vma offset, | |
7140 | const char **filename_ptr, | |
7141 | const char **functionname_ptr, | |
7142 | unsigned int *line_ptr) | |
d1fad7c6 | 7143 | { |
b34976b6 | 7144 | bfd_boolean found; |
d1fad7c6 NC |
7145 | |
7146 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7147 | filename_ptr, functionname_ptr, |
7148 | line_ptr)) | |
d1fad7c6 NC |
7149 | { |
7150 | if (!*functionname_ptr) | |
4e8a9624 AM |
7151 | elf_find_function (abfd, section, symbols, offset, |
7152 | *filename_ptr ? NULL : filename_ptr, | |
7153 | functionname_ptr); | |
7154 | ||
b34976b6 | 7155 | return TRUE; |
d1fad7c6 NC |
7156 | } |
7157 | ||
7158 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7159 | filename_ptr, functionname_ptr, |
7160 | line_ptr, 0, | |
7161 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
7162 | { |
7163 | if (!*functionname_ptr) | |
4e8a9624 AM |
7164 | elf_find_function (abfd, section, symbols, offset, |
7165 | *filename_ptr ? NULL : filename_ptr, | |
7166 | functionname_ptr); | |
7167 | ||
b34976b6 | 7168 | return TRUE; |
d1fad7c6 NC |
7169 | } |
7170 | ||
7171 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
7172 | &found, filename_ptr, |
7173 | functionname_ptr, line_ptr, | |
7174 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 7175 | return FALSE; |
dc43ada5 | 7176 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 7177 | return TRUE; |
d1fad7c6 NC |
7178 | |
7179 | if (symbols == NULL) | |
b34976b6 | 7180 | return FALSE; |
d1fad7c6 NC |
7181 | |
7182 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 7183 | filename_ptr, functionname_ptr)) |
b34976b6 | 7184 | return FALSE; |
d1fad7c6 | 7185 | |
252b5132 | 7186 | *line_ptr = 0; |
b34976b6 | 7187 | return TRUE; |
252b5132 RH |
7188 | } |
7189 | ||
5420f73d L |
7190 | /* Find the line for a symbol. */ |
7191 | ||
7192 | bfd_boolean | |
7193 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, | |
7194 | const char **filename_ptr, unsigned int *line_ptr) | |
7195 | { | |
7196 | return _bfd_dwarf2_find_line (abfd, symbols, symbol, | |
7197 | filename_ptr, line_ptr, 0, | |
7198 | &elf_tdata (abfd)->dwarf2_find_line_info); | |
7199 | } | |
7200 | ||
4ab527b0 FF |
7201 | /* After a call to bfd_find_nearest_line, successive calls to |
7202 | bfd_find_inliner_info can be used to get source information about | |
7203 | each level of function inlining that terminated at the address | |
7204 | passed to bfd_find_nearest_line. Currently this is only supported | |
7205 | for DWARF2 with appropriate DWARF3 extensions. */ | |
7206 | ||
7207 | bfd_boolean | |
7208 | _bfd_elf_find_inliner_info (bfd *abfd, | |
7209 | const char **filename_ptr, | |
7210 | const char **functionname_ptr, | |
7211 | unsigned int *line_ptr) | |
7212 | { | |
7213 | bfd_boolean found; | |
7214 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
7215 | functionname_ptr, line_ptr, | |
7216 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
7217 | return found; | |
7218 | } | |
7219 | ||
252b5132 | 7220 | int |
a6b96beb | 7221 | _bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 7222 | { |
8ded5a0f AM |
7223 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7224 | int ret = bed->s->sizeof_ehdr; | |
252b5132 | 7225 | |
a6b96beb | 7226 | if (!info->relocatable) |
8ded5a0f | 7227 | { |
62d7a5f6 | 7228 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
8ded5a0f | 7229 | |
62d7a5f6 AM |
7230 | if (phdr_size == (bfd_size_type) -1) |
7231 | { | |
7232 | struct elf_segment_map *m; | |
7233 | ||
7234 | phdr_size = 0; | |
7235 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
7236 | phdr_size += bed->s->sizeof_phdr; | |
8ded5a0f | 7237 | |
62d7a5f6 AM |
7238 | if (phdr_size == 0) |
7239 | phdr_size = get_program_header_size (abfd, info); | |
7240 | } | |
8ded5a0f AM |
7241 | |
7242 | elf_tdata (abfd)->program_header_size = phdr_size; | |
7243 | ret += phdr_size; | |
7244 | } | |
7245 | ||
252b5132 RH |
7246 | return ret; |
7247 | } | |
7248 | ||
b34976b6 | 7249 | bfd_boolean |
217aa764 AM |
7250 | _bfd_elf_set_section_contents (bfd *abfd, |
7251 | sec_ptr section, | |
0f867abe | 7252 | const void *location, |
217aa764 AM |
7253 | file_ptr offset, |
7254 | bfd_size_type count) | |
252b5132 RH |
7255 | { |
7256 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 7257 | bfd_signed_vma pos; |
252b5132 RH |
7258 | |
7259 | if (! abfd->output_has_begun | |
217aa764 | 7260 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 7261 | return FALSE; |
252b5132 RH |
7262 | |
7263 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
7264 | pos = hdr->sh_offset + offset; |
7265 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
7266 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 7267 | return FALSE; |
252b5132 | 7268 | |
b34976b6 | 7269 | return TRUE; |
252b5132 RH |
7270 | } |
7271 | ||
7272 | void | |
217aa764 AM |
7273 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
7274 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
7275 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
7276 | { |
7277 | abort (); | |
7278 | } | |
7279 | ||
252b5132 RH |
7280 | /* Try to convert a non-ELF reloc into an ELF one. */ |
7281 | ||
b34976b6 | 7282 | bfd_boolean |
217aa764 | 7283 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 7284 | { |
c044fabd | 7285 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
7286 | |
7287 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
7288 | { | |
7289 | bfd_reloc_code_real_type code; | |
7290 | reloc_howto_type *howto; | |
7291 | ||
7292 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 7293 | equivalent ELF reloc. */ |
252b5132 RH |
7294 | |
7295 | if (areloc->howto->pc_relative) | |
7296 | { | |
7297 | switch (areloc->howto->bitsize) | |
7298 | { | |
7299 | case 8: | |
7300 | code = BFD_RELOC_8_PCREL; | |
7301 | break; | |
7302 | case 12: | |
7303 | code = BFD_RELOC_12_PCREL; | |
7304 | break; | |
7305 | case 16: | |
7306 | code = BFD_RELOC_16_PCREL; | |
7307 | break; | |
7308 | case 24: | |
7309 | code = BFD_RELOC_24_PCREL; | |
7310 | break; | |
7311 | case 32: | |
7312 | code = BFD_RELOC_32_PCREL; | |
7313 | break; | |
7314 | case 64: | |
7315 | code = BFD_RELOC_64_PCREL; | |
7316 | break; | |
7317 | default: | |
7318 | goto fail; | |
7319 | } | |
7320 | ||
7321 | howto = bfd_reloc_type_lookup (abfd, code); | |
7322 | ||
7323 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
7324 | { | |
7325 | if (howto->pcrel_offset) | |
7326 | areloc->addend += areloc->address; | |
7327 | else | |
7328 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
7329 | } | |
7330 | } | |
7331 | else | |
7332 | { | |
7333 | switch (areloc->howto->bitsize) | |
7334 | { | |
7335 | case 8: | |
7336 | code = BFD_RELOC_8; | |
7337 | break; | |
7338 | case 14: | |
7339 | code = BFD_RELOC_14; | |
7340 | break; | |
7341 | case 16: | |
7342 | code = BFD_RELOC_16; | |
7343 | break; | |
7344 | case 26: | |
7345 | code = BFD_RELOC_26; | |
7346 | break; | |
7347 | case 32: | |
7348 | code = BFD_RELOC_32; | |
7349 | break; | |
7350 | case 64: | |
7351 | code = BFD_RELOC_64; | |
7352 | break; | |
7353 | default: | |
7354 | goto fail; | |
7355 | } | |
7356 | ||
7357 | howto = bfd_reloc_type_lookup (abfd, code); | |
7358 | } | |
7359 | ||
7360 | if (howto) | |
7361 | areloc->howto = howto; | |
7362 | else | |
7363 | goto fail; | |
7364 | } | |
7365 | ||
b34976b6 | 7366 | return TRUE; |
252b5132 RH |
7367 | |
7368 | fail: | |
7369 | (*_bfd_error_handler) | |
d003868e AM |
7370 | (_("%B: unsupported relocation type %s"), |
7371 | abfd, areloc->howto->name); | |
252b5132 | 7372 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7373 | return FALSE; |
252b5132 RH |
7374 | } |
7375 | ||
b34976b6 | 7376 | bfd_boolean |
217aa764 | 7377 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
7378 | { |
7379 | if (bfd_get_format (abfd) == bfd_object) | |
7380 | { | |
b25e3d87 | 7381 | if (elf_tdata (abfd) != NULL && elf_shstrtab (abfd) != NULL) |
2b0f7ef9 | 7382 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 7383 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
7384 | } |
7385 | ||
7386 | return _bfd_generic_close_and_cleanup (abfd); | |
7387 | } | |
7388 | ||
7389 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
7390 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
7391 | range-checking to interfere. There is nothing else to do in processing | |
7392 | this reloc. */ | |
7393 | ||
7394 | bfd_reloc_status_type | |
217aa764 AM |
7395 | _bfd_elf_rel_vtable_reloc_fn |
7396 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 7397 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
7398 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
7399 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
7400 | { |
7401 | return bfd_reloc_ok; | |
7402 | } | |
252b5132 RH |
7403 | \f |
7404 | /* Elf core file support. Much of this only works on native | |
7405 | toolchains, since we rely on knowing the | |
7406 | machine-dependent procfs structure in order to pick | |
c044fabd | 7407 | out details about the corefile. */ |
252b5132 RH |
7408 | |
7409 | #ifdef HAVE_SYS_PROCFS_H | |
7410 | # include <sys/procfs.h> | |
7411 | #endif | |
7412 | ||
c044fabd | 7413 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
7414 | |
7415 | static int | |
217aa764 | 7416 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
7417 | { |
7418 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
7419 | + (elf_tdata (abfd)->core_pid)); | |
7420 | } | |
7421 | ||
252b5132 RH |
7422 | /* If there isn't a section called NAME, make one, using |
7423 | data from SECT. Note, this function will generate a | |
7424 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 7425 | overwrite it. */ |
252b5132 | 7426 | |
b34976b6 | 7427 | static bfd_boolean |
217aa764 | 7428 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 7429 | { |
c044fabd | 7430 | asection *sect2; |
252b5132 RH |
7431 | |
7432 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 7433 | return TRUE; |
252b5132 | 7434 | |
117ed4f8 | 7435 | sect2 = bfd_make_section_with_flags (abfd, name, sect->flags); |
252b5132 | 7436 | if (sect2 == NULL) |
b34976b6 | 7437 | return FALSE; |
252b5132 | 7438 | |
eea6121a | 7439 | sect2->size = sect->size; |
252b5132 | 7440 | sect2->filepos = sect->filepos; |
252b5132 | 7441 | sect2->alignment_power = sect->alignment_power; |
b34976b6 | 7442 | return TRUE; |
252b5132 RH |
7443 | } |
7444 | ||
bb0082d6 AM |
7445 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
7446 | actually creates up to two pseudosections: | |
7447 | - For the single-threaded case, a section named NAME, unless | |
7448 | such a section already exists. | |
7449 | - For the multi-threaded case, a section named "NAME/PID", where | |
7450 | PID is elfcore_make_pid (abfd). | |
7451 | Both pseudosections have identical contents. */ | |
b34976b6 | 7452 | bfd_boolean |
217aa764 AM |
7453 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
7454 | char *name, | |
7455 | size_t size, | |
7456 | ufile_ptr filepos) | |
bb0082d6 AM |
7457 | { |
7458 | char buf[100]; | |
7459 | char *threaded_name; | |
d4c88bbb | 7460 | size_t len; |
bb0082d6 AM |
7461 | asection *sect; |
7462 | ||
7463 | /* Build the section name. */ | |
7464 | ||
7465 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 7466 | len = strlen (buf) + 1; |
217aa764 | 7467 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 7468 | if (threaded_name == NULL) |
b34976b6 | 7469 | return FALSE; |
d4c88bbb | 7470 | memcpy (threaded_name, buf, len); |
bb0082d6 | 7471 | |
117ed4f8 AM |
7472 | sect = bfd_make_section_anyway_with_flags (abfd, threaded_name, |
7473 | SEC_HAS_CONTENTS); | |
bb0082d6 | 7474 | if (sect == NULL) |
b34976b6 | 7475 | return FALSE; |
eea6121a | 7476 | sect->size = size; |
bb0082d6 | 7477 | sect->filepos = filepos; |
bb0082d6 AM |
7478 | sect->alignment_power = 2; |
7479 | ||
936e320b | 7480 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
7481 | } |
7482 | ||
252b5132 | 7483 | /* prstatus_t exists on: |
4a938328 | 7484 | solaris 2.5+ |
252b5132 RH |
7485 | linux 2.[01] + glibc |
7486 | unixware 4.2 | |
7487 | */ | |
7488 | ||
7489 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 7490 | |
b34976b6 | 7491 | static bfd_boolean |
217aa764 | 7492 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7493 | { |
eea6121a | 7494 | size_t size; |
7ee38065 | 7495 | int offset; |
252b5132 | 7496 | |
4a938328 MS |
7497 | if (note->descsz == sizeof (prstatus_t)) |
7498 | { | |
7499 | prstatus_t prstat; | |
252b5132 | 7500 | |
eea6121a | 7501 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7502 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 7503 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 7504 | |
fa49d224 NC |
7505 | /* Do not overwrite the core signal if it |
7506 | has already been set by another thread. */ | |
7507 | if (elf_tdata (abfd)->core_signal == 0) | |
7508 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 7509 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 7510 | |
4a938328 MS |
7511 | /* pr_who exists on: |
7512 | solaris 2.5+ | |
7513 | unixware 4.2 | |
7514 | pr_who doesn't exist on: | |
7515 | linux 2.[01] | |
7516 | */ | |
252b5132 | 7517 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 7518 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 7519 | #endif |
4a938328 | 7520 | } |
7ee38065 | 7521 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
7522 | else if (note->descsz == sizeof (prstatus32_t)) |
7523 | { | |
7524 | /* 64-bit host, 32-bit corefile */ | |
7525 | prstatus32_t prstat; | |
7526 | ||
eea6121a | 7527 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7528 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
7529 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
7530 | ||
fa49d224 NC |
7531 | /* Do not overwrite the core signal if it |
7532 | has already been set by another thread. */ | |
7533 | if (elf_tdata (abfd)->core_signal == 0) | |
7534 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
7535 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
7536 | ||
7537 | /* pr_who exists on: | |
7538 | solaris 2.5+ | |
7539 | unixware 4.2 | |
7540 | pr_who doesn't exist on: | |
7541 | linux 2.[01] | |
7542 | */ | |
7ee38065 | 7543 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
7544 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
7545 | #endif | |
7546 | } | |
7ee38065 | 7547 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
7548 | else |
7549 | { | |
7550 | /* Fail - we don't know how to handle any other | |
7551 | note size (ie. data object type). */ | |
b34976b6 | 7552 | return TRUE; |
4a938328 | 7553 | } |
252b5132 | 7554 | |
bb0082d6 | 7555 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 7556 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 7557 | size, note->descpos + offset); |
252b5132 RH |
7558 | } |
7559 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
7560 | ||
bb0082d6 | 7561 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 7562 | static bfd_boolean |
217aa764 AM |
7563 | elfcore_make_note_pseudosection (bfd *abfd, |
7564 | char *name, | |
7565 | Elf_Internal_Note *note) | |
252b5132 | 7566 | { |
936e320b AM |
7567 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7568 | note->descsz, note->descpos); | |
252b5132 RH |
7569 | } |
7570 | ||
ff08c6bb JB |
7571 | /* There isn't a consistent prfpregset_t across platforms, |
7572 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7573 | data structure apart. */ |
7574 | ||
b34976b6 | 7575 | static bfd_boolean |
217aa764 | 7576 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7577 | { |
7578 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7579 | } | |
7580 | ||
ff08c6bb | 7581 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
971d4640 | 7582 | type of NT_PRXFPREG. Just include the whole note's contents |
ff08c6bb | 7583 | literally. */ |
c044fabd | 7584 | |
b34976b6 | 7585 | static bfd_boolean |
217aa764 | 7586 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7587 | { |
7588 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7589 | } | |
7590 | ||
97753bd5 AM |
7591 | static bfd_boolean |
7592 | elfcore_grok_ppc_vmx (bfd *abfd, Elf_Internal_Note *note) | |
7593 | { | |
7594 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vmx", note); | |
7595 | } | |
7596 | ||
89eeb0bc LM |
7597 | static bfd_boolean |
7598 | elfcore_grok_ppc_vsx (bfd *abfd, Elf_Internal_Note *note) | |
7599 | { | |
7600 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vsx", note); | |
7601 | } | |
97753bd5 | 7602 | |
252b5132 | 7603 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7604 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7605 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7606 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7607 | #endif | |
252b5132 RH |
7608 | #endif |
7609 | ||
7610 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7611 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7612 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7613 | typedef psinfo32_t elfcore_psinfo32_t; |
7614 | #endif | |
252b5132 RH |
7615 | #endif |
7616 | ||
252b5132 RH |
7617 | /* return a malloc'ed copy of a string at START which is at |
7618 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7619 | the copy will always have a terminating '\0'. */ |
252b5132 | 7620 | |
936e320b | 7621 | char * |
217aa764 | 7622 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7623 | { |
dc810e39 | 7624 | char *dups; |
c044fabd | 7625 | char *end = memchr (start, '\0', max); |
dc810e39 | 7626 | size_t len; |
252b5132 RH |
7627 | |
7628 | if (end == NULL) | |
7629 | len = max; | |
7630 | else | |
7631 | len = end - start; | |
7632 | ||
217aa764 | 7633 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 7634 | if (dups == NULL) |
252b5132 RH |
7635 | return NULL; |
7636 | ||
dc810e39 AM |
7637 | memcpy (dups, start, len); |
7638 | dups[len] = '\0'; | |
252b5132 | 7639 | |
dc810e39 | 7640 | return dups; |
252b5132 RH |
7641 | } |
7642 | ||
bb0082d6 | 7643 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7644 | static bfd_boolean |
217aa764 | 7645 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7646 | { |
4a938328 MS |
7647 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7648 | { | |
7649 | elfcore_psinfo_t psinfo; | |
252b5132 | 7650 | |
7ee38065 | 7651 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7652 | |
4a938328 | 7653 | elf_tdata (abfd)->core_program |
936e320b AM |
7654 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7655 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7656 | |
4a938328 | 7657 | elf_tdata (abfd)->core_command |
936e320b AM |
7658 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7659 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7660 | } |
7ee38065 | 7661 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7662 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7663 | { | |
7664 | /* 64-bit host, 32-bit corefile */ | |
7665 | elfcore_psinfo32_t psinfo; | |
7666 | ||
7ee38065 | 7667 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7668 | |
4a938328 | 7669 | elf_tdata (abfd)->core_program |
936e320b AM |
7670 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7671 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7672 | |
7673 | elf_tdata (abfd)->core_command | |
936e320b AM |
7674 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7675 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7676 | } |
7677 | #endif | |
7678 | ||
7679 | else | |
7680 | { | |
7681 | /* Fail - we don't know how to handle any other | |
7682 | note size (ie. data object type). */ | |
b34976b6 | 7683 | return TRUE; |
4a938328 | 7684 | } |
252b5132 RH |
7685 | |
7686 | /* Note that for some reason, a spurious space is tacked | |
7687 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7688 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7689 | |
7690 | { | |
c044fabd | 7691 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7692 | int n = strlen (command); |
7693 | ||
7694 | if (0 < n && command[n - 1] == ' ') | |
7695 | command[n - 1] = '\0'; | |
7696 | } | |
7697 | ||
b34976b6 | 7698 | return TRUE; |
252b5132 RH |
7699 | } |
7700 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7701 | ||
252b5132 | 7702 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7703 | static bfd_boolean |
217aa764 | 7704 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7705 | { |
f572a39d AM |
7706 | if (note->descsz == sizeof (pstatus_t) |
7707 | #if defined (HAVE_PXSTATUS_T) | |
7708 | || note->descsz == sizeof (pxstatus_t) | |
7709 | #endif | |
7710 | ) | |
4a938328 MS |
7711 | { |
7712 | pstatus_t pstat; | |
252b5132 | 7713 | |
4a938328 | 7714 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7715 | |
4a938328 MS |
7716 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7717 | } | |
7ee38065 | 7718 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7719 | else if (note->descsz == sizeof (pstatus32_t)) |
7720 | { | |
7721 | /* 64-bit host, 32-bit corefile */ | |
7722 | pstatus32_t pstat; | |
252b5132 | 7723 | |
4a938328 | 7724 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7725 | |
4a938328 MS |
7726 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7727 | } | |
7728 | #endif | |
252b5132 RH |
7729 | /* Could grab some more details from the "representative" |
7730 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7731 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7732 | |
b34976b6 | 7733 | return TRUE; |
252b5132 RH |
7734 | } |
7735 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7736 | ||
252b5132 | 7737 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7738 | static bfd_boolean |
217aa764 | 7739 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7740 | { |
7741 | lwpstatus_t lwpstat; | |
7742 | char buf[100]; | |
c044fabd | 7743 | char *name; |
d4c88bbb | 7744 | size_t len; |
c044fabd | 7745 | asection *sect; |
252b5132 | 7746 | |
f572a39d AM |
7747 | if (note->descsz != sizeof (lwpstat) |
7748 | #if defined (HAVE_LWPXSTATUS_T) | |
7749 | && note->descsz != sizeof (lwpxstatus_t) | |
7750 | #endif | |
7751 | ) | |
b34976b6 | 7752 | return TRUE; |
252b5132 RH |
7753 | |
7754 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7755 | ||
7756 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7757 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7758 | ||
c044fabd | 7759 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7760 | |
7761 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7762 | len = strlen (buf) + 1; |
217aa764 | 7763 | name = bfd_alloc (abfd, len); |
252b5132 | 7764 | if (name == NULL) |
b34976b6 | 7765 | return FALSE; |
d4c88bbb | 7766 | memcpy (name, buf, len); |
252b5132 | 7767 | |
117ed4f8 | 7768 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7769 | if (sect == NULL) |
b34976b6 | 7770 | return FALSE; |
252b5132 RH |
7771 | |
7772 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7773 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7774 | sect->filepos = note->descpos |
7775 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7776 | #endif | |
7777 | ||
7778 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7779 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7780 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7781 | #endif | |
7782 | ||
252b5132 RH |
7783 | sect->alignment_power = 2; |
7784 | ||
7785 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7786 | return FALSE; |
252b5132 RH |
7787 | |
7788 | /* Make a ".reg2/999" section */ | |
7789 | ||
7790 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7791 | len = strlen (buf) + 1; |
217aa764 | 7792 | name = bfd_alloc (abfd, len); |
252b5132 | 7793 | if (name == NULL) |
b34976b6 | 7794 | return FALSE; |
d4c88bbb | 7795 | memcpy (name, buf, len); |
252b5132 | 7796 | |
117ed4f8 | 7797 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7798 | if (sect == NULL) |
b34976b6 | 7799 | return FALSE; |
252b5132 RH |
7800 | |
7801 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7802 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7803 | sect->filepos = note->descpos |
7804 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7805 | #endif | |
7806 | ||
7807 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7808 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7809 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7810 | #endif | |
7811 | ||
252b5132 RH |
7812 | sect->alignment_power = 2; |
7813 | ||
936e320b | 7814 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7815 | } |
7816 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7817 | ||
b34976b6 | 7818 | static bfd_boolean |
217aa764 | 7819 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7820 | { |
7821 | char buf[30]; | |
c044fabd | 7822 | char *name; |
d4c88bbb | 7823 | size_t len; |
c044fabd | 7824 | asection *sect; |
4a6636fb PA |
7825 | int type; |
7826 | int is_active_thread; | |
7827 | bfd_vma base_addr; | |
16e9c715 | 7828 | |
4a6636fb | 7829 | if (note->descsz < 728) |
b34976b6 | 7830 | return TRUE; |
16e9c715 | 7831 | |
4a6636fb PA |
7832 | if (! CONST_STRNEQ (note->namedata, "win32")) |
7833 | return TRUE; | |
7834 | ||
7835 | type = bfd_get_32 (abfd, note->descdata); | |
c044fabd | 7836 | |
4a6636fb | 7837 | switch (type) |
16e9c715 | 7838 | { |
4a6636fb | 7839 | case 1 /* NOTE_INFO_PROCESS */: |
16e9c715 | 7840 | /* FIXME: need to add ->core_command. */ |
4a6636fb PA |
7841 | /* process_info.pid */ |
7842 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 8); | |
7843 | /* process_info.signal */ | |
7844 | elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 12); | |
c044fabd | 7845 | break; |
16e9c715 | 7846 | |
4a6636fb | 7847 | case 2 /* NOTE_INFO_THREAD */: |
16e9c715 | 7848 | /* Make a ".reg/999" section. */ |
4a6636fb PA |
7849 | /* thread_info.tid */ |
7850 | sprintf (buf, ".reg/%ld", (long) bfd_get_32 (abfd, note->descdata + 8)); | |
c044fabd | 7851 | |
d4c88bbb | 7852 | len = strlen (buf) + 1; |
217aa764 | 7853 | name = bfd_alloc (abfd, len); |
16e9c715 | 7854 | if (name == NULL) |
b34976b6 | 7855 | return FALSE; |
c044fabd | 7856 | |
d4c88bbb | 7857 | memcpy (name, buf, len); |
16e9c715 | 7858 | |
117ed4f8 | 7859 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
16e9c715 | 7860 | if (sect == NULL) |
b34976b6 | 7861 | return FALSE; |
c044fabd | 7862 | |
4a6636fb PA |
7863 | /* sizeof (thread_info.thread_context) */ |
7864 | sect->size = 716; | |
7865 | /* offsetof (thread_info.thread_context) */ | |
7866 | sect->filepos = note->descpos + 12; | |
16e9c715 NC |
7867 | sect->alignment_power = 2; |
7868 | ||
4a6636fb PA |
7869 | /* thread_info.is_active_thread */ |
7870 | is_active_thread = bfd_get_32 (abfd, note->descdata + 8); | |
7871 | ||
7872 | if (is_active_thread) | |
16e9c715 | 7873 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) |
b34976b6 | 7874 | return FALSE; |
16e9c715 NC |
7875 | break; |
7876 | ||
4a6636fb | 7877 | case 3 /* NOTE_INFO_MODULE */: |
16e9c715 | 7878 | /* Make a ".module/xxxxxxxx" section. */ |
4a6636fb PA |
7879 | /* module_info.base_address */ |
7880 | base_addr = bfd_get_32 (abfd, note->descdata + 4); | |
0af1713e | 7881 | sprintf (buf, ".module/%08lx", (unsigned long) base_addr); |
c044fabd | 7882 | |
d4c88bbb | 7883 | len = strlen (buf) + 1; |
217aa764 | 7884 | name = bfd_alloc (abfd, len); |
16e9c715 | 7885 | if (name == NULL) |
b34976b6 | 7886 | return FALSE; |
c044fabd | 7887 | |
d4c88bbb | 7888 | memcpy (name, buf, len); |
252b5132 | 7889 | |
117ed4f8 | 7890 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
c044fabd | 7891 | |
16e9c715 | 7892 | if (sect == NULL) |
b34976b6 | 7893 | return FALSE; |
c044fabd | 7894 | |
eea6121a | 7895 | sect->size = note->descsz; |
16e9c715 | 7896 | sect->filepos = note->descpos; |
16e9c715 NC |
7897 | sect->alignment_power = 2; |
7898 | break; | |
7899 | ||
7900 | default: | |
b34976b6 | 7901 | return TRUE; |
16e9c715 NC |
7902 | } |
7903 | ||
b34976b6 | 7904 | return TRUE; |
16e9c715 | 7905 | } |
252b5132 | 7906 | |
b34976b6 | 7907 | static bfd_boolean |
217aa764 | 7908 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7909 | { |
9c5bfbb7 | 7910 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7911 | |
252b5132 RH |
7912 | switch (note->type) |
7913 | { | |
7914 | default: | |
b34976b6 | 7915 | return TRUE; |
252b5132 | 7916 | |
252b5132 | 7917 | case NT_PRSTATUS: |
bb0082d6 AM |
7918 | if (bed->elf_backend_grok_prstatus) |
7919 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7920 | return TRUE; |
bb0082d6 | 7921 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7922 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7923 | #else |
b34976b6 | 7924 | return TRUE; |
252b5132 RH |
7925 | #endif |
7926 | ||
7927 | #if defined (HAVE_PSTATUS_T) | |
7928 | case NT_PSTATUS: | |
7929 | return elfcore_grok_pstatus (abfd, note); | |
7930 | #endif | |
7931 | ||
7932 | #if defined (HAVE_LWPSTATUS_T) | |
7933 | case NT_LWPSTATUS: | |
7934 | return elfcore_grok_lwpstatus (abfd, note); | |
7935 | #endif | |
7936 | ||
7937 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7938 | return elfcore_grok_prfpreg (abfd, note); | |
7939 | ||
c044fabd | 7940 | case NT_WIN32PSTATUS: |
16e9c715 | 7941 | return elfcore_grok_win32pstatus (abfd, note); |
16e9c715 | 7942 | |
c044fabd | 7943 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7944 | if (note->namesz == 6 |
7945 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7946 | return elfcore_grok_prxfpreg (abfd, note); |
7947 | else | |
b34976b6 | 7948 | return TRUE; |
ff08c6bb | 7949 | |
97753bd5 AM |
7950 | case NT_PPC_VMX: |
7951 | if (note->namesz == 6 | |
7952 | && strcmp (note->namedata, "LINUX") == 0) | |
7953 | return elfcore_grok_ppc_vmx (abfd, note); | |
7954 | else | |
7955 | return TRUE; | |
7956 | ||
89eeb0bc LM |
7957 | case NT_PPC_VSX: |
7958 | if (note->namesz == 6 | |
7959 | && strcmp (note->namedata, "LINUX") == 0) | |
7960 | return elfcore_grok_ppc_vsx (abfd, note); | |
7961 | else | |
7962 | return TRUE; | |
7963 | ||
252b5132 RH |
7964 | case NT_PRPSINFO: |
7965 | case NT_PSINFO: | |
bb0082d6 AM |
7966 | if (bed->elf_backend_grok_psinfo) |
7967 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7968 | return TRUE; |
bb0082d6 | 7969 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7970 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7971 | #else |
b34976b6 | 7972 | return TRUE; |
252b5132 | 7973 | #endif |
3333a7c3 RM |
7974 | |
7975 | case NT_AUXV: | |
7976 | { | |
117ed4f8 AM |
7977 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", |
7978 | SEC_HAS_CONTENTS); | |
3333a7c3 RM |
7979 | |
7980 | if (sect == NULL) | |
7981 | return FALSE; | |
eea6121a | 7982 | sect->size = note->descsz; |
3333a7c3 | 7983 | sect->filepos = note->descpos; |
3333a7c3 RM |
7984 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; |
7985 | ||
7986 | return TRUE; | |
7987 | } | |
252b5132 RH |
7988 | } |
7989 | } | |
7990 | ||
718175fa JK |
7991 | static bfd_boolean |
7992 | elfobj_grok_gnu_build_id (bfd *abfd, Elf_Internal_Note *note) | |
7993 | { | |
7994 | elf_tdata (abfd)->build_id_size = note->descsz; | |
7995 | elf_tdata (abfd)->build_id = bfd_alloc (abfd, note->descsz); | |
7996 | if (elf_tdata (abfd)->build_id == NULL) | |
7997 | return FALSE; | |
7998 | ||
7999 | memcpy (elf_tdata (abfd)->build_id, note->descdata, note->descsz); | |
8000 | ||
8001 | return TRUE; | |
8002 | } | |
8003 | ||
8004 | static bfd_boolean | |
8005 | elfobj_grok_gnu_note (bfd *abfd, Elf_Internal_Note *note) | |
8006 | { | |
8007 | switch (note->type) | |
8008 | { | |
8009 | default: | |
8010 | return TRUE; | |
8011 | ||
8012 | case NT_GNU_BUILD_ID: | |
8013 | return elfobj_grok_gnu_build_id (abfd, note); | |
8014 | } | |
8015 | } | |
8016 | ||
b34976b6 | 8017 | static bfd_boolean |
217aa764 | 8018 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
8019 | { |
8020 | char *cp; | |
8021 | ||
8022 | cp = strchr (note->namedata, '@'); | |
8023 | if (cp != NULL) | |
8024 | { | |
d2b64500 | 8025 | *lwpidp = atoi(cp + 1); |
b34976b6 | 8026 | return TRUE; |
50b2bdb7 | 8027 | } |
b34976b6 | 8028 | return FALSE; |
50b2bdb7 AM |
8029 | } |
8030 | ||
b34976b6 | 8031 | static bfd_boolean |
217aa764 | 8032 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 | 8033 | { |
50b2bdb7 AM |
8034 | /* Signal number at offset 0x08. */ |
8035 | elf_tdata (abfd)->core_signal | |
8036 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
8037 | ||
8038 | /* Process ID at offset 0x50. */ | |
8039 | elf_tdata (abfd)->core_pid | |
8040 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
8041 | ||
8042 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
8043 | elf_tdata (abfd)->core_command | |
8044 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
8045 | ||
7720ba9f MK |
8046 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
8047 | note); | |
50b2bdb7 AM |
8048 | } |
8049 | ||
b34976b6 | 8050 | static bfd_boolean |
217aa764 | 8051 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
8052 | { |
8053 | int lwp; | |
8054 | ||
8055 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
8056 | elf_tdata (abfd)->core_lwpid = lwp; | |
8057 | ||
b4db1224 | 8058 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
8059 | { |
8060 | /* NetBSD-specific core "procinfo". Note that we expect to | |
08a40648 AM |
8061 | find this note before any of the others, which is fine, |
8062 | since the kernel writes this note out first when it | |
8063 | creates a core file. */ | |
47d9a591 | 8064 | |
50b2bdb7 AM |
8065 | return elfcore_grok_netbsd_procinfo (abfd, note); |
8066 | } | |
8067 | ||
b4db1224 JT |
8068 | /* As of Jan 2002 there are no other machine-independent notes |
8069 | defined for NetBSD core files. If the note type is less | |
8070 | than the start of the machine-dependent note types, we don't | |
8071 | understand it. */ | |
47d9a591 | 8072 | |
b4db1224 | 8073 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 8074 | return TRUE; |
50b2bdb7 AM |
8075 | |
8076 | ||
8077 | switch (bfd_get_arch (abfd)) | |
8078 | { | |
08a40648 AM |
8079 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and |
8080 | PT_GETFPREGS == mach+2. */ | |
50b2bdb7 AM |
8081 | |
8082 | case bfd_arch_alpha: | |
8083 | case bfd_arch_sparc: | |
8084 | switch (note->type) | |
08a40648 AM |
8085 | { |
8086 | case NT_NETBSDCORE_FIRSTMACH+0: | |
8087 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 8088 | |
08a40648 AM |
8089 | case NT_NETBSDCORE_FIRSTMACH+2: |
8090 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 8091 | |
08a40648 AM |
8092 | default: |
8093 | return TRUE; | |
8094 | } | |
50b2bdb7 | 8095 | |
08a40648 AM |
8096 | /* On all other arch's, PT_GETREGS == mach+1 and |
8097 | PT_GETFPREGS == mach+3. */ | |
50b2bdb7 AM |
8098 | |
8099 | default: | |
8100 | switch (note->type) | |
08a40648 AM |
8101 | { |
8102 | case NT_NETBSDCORE_FIRSTMACH+1: | |
8103 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 8104 | |
08a40648 AM |
8105 | case NT_NETBSDCORE_FIRSTMACH+3: |
8106 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 8107 | |
08a40648 AM |
8108 | default: |
8109 | return TRUE; | |
8110 | } | |
50b2bdb7 AM |
8111 | } |
8112 | /* NOTREACHED */ | |
8113 | } | |
8114 | ||
67cc5033 MK |
8115 | static bfd_boolean |
8116 | elfcore_grok_openbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) | |
8117 | { | |
8118 | /* Signal number at offset 0x08. */ | |
8119 | elf_tdata (abfd)->core_signal | |
8120 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
8121 | ||
8122 | /* Process ID at offset 0x20. */ | |
8123 | elf_tdata (abfd)->core_pid | |
8124 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x20); | |
8125 | ||
8126 | /* Command name at 0x48 (max 32 bytes, including nul). */ | |
8127 | elf_tdata (abfd)->core_command | |
8128 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x48, 31); | |
8129 | ||
8130 | return TRUE; | |
8131 | } | |
8132 | ||
8133 | static bfd_boolean | |
8134 | elfcore_grok_openbsd_note (bfd *abfd, Elf_Internal_Note *note) | |
8135 | { | |
8136 | if (note->type == NT_OPENBSD_PROCINFO) | |
8137 | return elfcore_grok_openbsd_procinfo (abfd, note); | |
8138 | ||
8139 | if (note->type == NT_OPENBSD_REGS) | |
8140 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
8141 | ||
8142 | if (note->type == NT_OPENBSD_FPREGS) | |
8143 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
8144 | ||
8145 | if (note->type == NT_OPENBSD_XFPREGS) | |
8146 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
8147 | ||
8148 | if (note->type == NT_OPENBSD_AUXV) | |
8149 | { | |
8150 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", | |
8151 | SEC_HAS_CONTENTS); | |
8152 | ||
8153 | if (sect == NULL) | |
8154 | return FALSE; | |
8155 | sect->size = note->descsz; | |
8156 | sect->filepos = note->descpos; | |
8157 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
8158 | ||
8159 | return TRUE; | |
8160 | } | |
8161 | ||
8162 | if (note->type == NT_OPENBSD_WCOOKIE) | |
8163 | { | |
8164 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".wcookie", | |
8165 | SEC_HAS_CONTENTS); | |
8166 | ||
8167 | if (sect == NULL) | |
8168 | return FALSE; | |
8169 | sect->size = note->descsz; | |
8170 | sect->filepos = note->descpos; | |
8171 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
8172 | ||
8173 | return TRUE; | |
8174 | } | |
8175 | ||
8176 | return TRUE; | |
8177 | } | |
8178 | ||
07c6e936 | 8179 | static bfd_boolean |
d3fd4074 | 8180 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid) |
07c6e936 NC |
8181 | { |
8182 | void *ddata = note->descdata; | |
8183 | char buf[100]; | |
8184 | char *name; | |
8185 | asection *sect; | |
f8843e87 AM |
8186 | short sig; |
8187 | unsigned flags; | |
07c6e936 NC |
8188 | |
8189 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
8190 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
8191 | ||
f8843e87 AM |
8192 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
8193 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
8194 | ||
8195 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
8196 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
8197 | |
8198 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
8199 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
8200 | { | |
8201 | elf_tdata (abfd)->core_signal = sig; | |
8202 | elf_tdata (abfd)->core_lwpid = *tid; | |
8203 | } | |
07c6e936 | 8204 | |
f8843e87 AM |
8205 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
8206 | do not come from signals so we make sure we set the current | |
8207 | thread just in case. */ | |
8208 | if (flags & 0x00000080) | |
8209 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
8210 | |
8211 | /* Make a ".qnx_core_status/%d" section. */ | |
d3fd4074 | 8212 | sprintf (buf, ".qnx_core_status/%ld", *tid); |
07c6e936 | 8213 | |
217aa764 | 8214 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8215 | if (name == NULL) |
8216 | return FALSE; | |
8217 | strcpy (name, buf); | |
8218 | ||
117ed4f8 | 8219 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8220 | if (sect == NULL) |
8221 | return FALSE; | |
8222 | ||
eea6121a | 8223 | sect->size = note->descsz; |
07c6e936 | 8224 | sect->filepos = note->descpos; |
07c6e936 NC |
8225 | sect->alignment_power = 2; |
8226 | ||
8227 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
8228 | } | |
8229 | ||
8230 | static bfd_boolean | |
d69f560c KW |
8231 | elfcore_grok_nto_regs (bfd *abfd, |
8232 | Elf_Internal_Note *note, | |
d3fd4074 | 8233 | long tid, |
d69f560c | 8234 | char *base) |
07c6e936 NC |
8235 | { |
8236 | char buf[100]; | |
8237 | char *name; | |
8238 | asection *sect; | |
8239 | ||
d69f560c | 8240 | /* Make a "(base)/%d" section. */ |
d3fd4074 | 8241 | sprintf (buf, "%s/%ld", base, tid); |
07c6e936 | 8242 | |
217aa764 | 8243 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8244 | if (name == NULL) |
8245 | return FALSE; | |
8246 | strcpy (name, buf); | |
8247 | ||
117ed4f8 | 8248 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8249 | if (sect == NULL) |
8250 | return FALSE; | |
8251 | ||
eea6121a | 8252 | sect->size = note->descsz; |
07c6e936 | 8253 | sect->filepos = note->descpos; |
07c6e936 NC |
8254 | sect->alignment_power = 2; |
8255 | ||
f8843e87 AM |
8256 | /* This is the current thread. */ |
8257 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 8258 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
8259 | |
8260 | return TRUE; | |
07c6e936 NC |
8261 | } |
8262 | ||
8263 | #define BFD_QNT_CORE_INFO 7 | |
8264 | #define BFD_QNT_CORE_STATUS 8 | |
8265 | #define BFD_QNT_CORE_GREG 9 | |
8266 | #define BFD_QNT_CORE_FPREG 10 | |
8267 | ||
8268 | static bfd_boolean | |
217aa764 | 8269 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
8270 | { |
8271 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 8272 | tid from the previous call to pass down to the next gregs |
07c6e936 | 8273 | function. */ |
d3fd4074 | 8274 | static long tid = 1; |
07c6e936 NC |
8275 | |
8276 | switch (note->type) | |
8277 | { | |
d69f560c KW |
8278 | case BFD_QNT_CORE_INFO: |
8279 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
8280 | case BFD_QNT_CORE_STATUS: | |
8281 | return elfcore_grok_nto_status (abfd, note, &tid); | |
8282 | case BFD_QNT_CORE_GREG: | |
8283 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
8284 | case BFD_QNT_CORE_FPREG: | |
8285 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
8286 | default: | |
8287 | return TRUE; | |
07c6e936 NC |
8288 | } |
8289 | } | |
8290 | ||
b15fa79e AM |
8291 | static bfd_boolean |
8292 | elfcore_grok_spu_note (bfd *abfd, Elf_Internal_Note *note) | |
8293 | { | |
8294 | char *name; | |
8295 | asection *sect; | |
8296 | size_t len; | |
8297 | ||
8298 | /* Use note name as section name. */ | |
8299 | len = note->namesz; | |
8300 | name = bfd_alloc (abfd, len); | |
8301 | if (name == NULL) | |
8302 | return FALSE; | |
8303 | memcpy (name, note->namedata, len); | |
8304 | name[len - 1] = '\0'; | |
8305 | ||
8306 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); | |
8307 | if (sect == NULL) | |
8308 | return FALSE; | |
8309 | ||
8310 | sect->size = note->descsz; | |
8311 | sect->filepos = note->descpos; | |
8312 | sect->alignment_power = 1; | |
8313 | ||
8314 | return TRUE; | |
8315 | } | |
8316 | ||
7c76fa91 MS |
8317 | /* Function: elfcore_write_note |
8318 | ||
47d9a591 | 8319 | Inputs: |
a39f3346 | 8320 | buffer to hold note, and current size of buffer |
7c76fa91 MS |
8321 | name of note |
8322 | type of note | |
8323 | data for note | |
8324 | size of data for note | |
8325 | ||
a39f3346 AM |
8326 | Writes note to end of buffer. ELF64 notes are written exactly as |
8327 | for ELF32, despite the current (as of 2006) ELF gabi specifying | |
8328 | that they ought to have 8-byte namesz and descsz field, and have | |
8329 | 8-byte alignment. Other writers, eg. Linux kernel, do the same. | |
8330 | ||
7c76fa91 | 8331 | Return: |
a39f3346 | 8332 | Pointer to realloc'd buffer, *BUFSIZ updated. */ |
7c76fa91 MS |
8333 | |
8334 | char * | |
a39f3346 | 8335 | elfcore_write_note (bfd *abfd, |
217aa764 | 8336 | char *buf, |
a39f3346 | 8337 | int *bufsiz, |
217aa764 | 8338 | const char *name, |
a39f3346 | 8339 | int type, |
217aa764 | 8340 | const void *input, |
a39f3346 | 8341 | int size) |
7c76fa91 MS |
8342 | { |
8343 | Elf_External_Note *xnp; | |
d4c88bbb | 8344 | size_t namesz; |
d4c88bbb | 8345 | size_t newspace; |
a39f3346 | 8346 | char *dest; |
7c76fa91 | 8347 | |
d4c88bbb | 8348 | namesz = 0; |
d4c88bbb | 8349 | if (name != NULL) |
a39f3346 | 8350 | namesz = strlen (name) + 1; |
d4c88bbb | 8351 | |
a39f3346 | 8352 | newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4); |
d4c88bbb | 8353 | |
a39f3346 | 8354 | buf = realloc (buf, *bufsiz + newspace); |
14b1c01e AM |
8355 | if (buf == NULL) |
8356 | return buf; | |
a39f3346 | 8357 | dest = buf + *bufsiz; |
7c76fa91 MS |
8358 | *bufsiz += newspace; |
8359 | xnp = (Elf_External_Note *) dest; | |
8360 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
8361 | H_PUT_32 (abfd, size, xnp->descsz); | |
8362 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
8363 | dest = xnp->name; |
8364 | if (name != NULL) | |
8365 | { | |
8366 | memcpy (dest, name, namesz); | |
8367 | dest += namesz; | |
a39f3346 | 8368 | while (namesz & 3) |
d4c88bbb AM |
8369 | { |
8370 | *dest++ = '\0'; | |
a39f3346 | 8371 | ++namesz; |
d4c88bbb AM |
8372 | } |
8373 | } | |
8374 | memcpy (dest, input, size); | |
a39f3346 AM |
8375 | dest += size; |
8376 | while (size & 3) | |
8377 | { | |
8378 | *dest++ = '\0'; | |
8379 | ++size; | |
8380 | } | |
8381 | return buf; | |
7c76fa91 MS |
8382 | } |
8383 | ||
8384 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
8385 | char * | |
217aa764 AM |
8386 | elfcore_write_prpsinfo (bfd *abfd, |
8387 | char *buf, | |
8388 | int *bufsiz, | |
8389 | const char *fname, | |
8390 | const char *psargs) | |
7c76fa91 | 8391 | { |
183e98be AM |
8392 | const char *note_name = "CORE"; |
8393 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8394 | ||
8395 | if (bed->elf_backend_write_core_note != NULL) | |
8396 | { | |
8397 | char *ret; | |
8398 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8399 | NT_PRPSINFO, fname, psargs); | |
8400 | if (ret != NULL) | |
8401 | return ret; | |
8402 | } | |
7c76fa91 | 8403 | |
183e98be AM |
8404 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
8405 | if (bed->s->elfclass == ELFCLASS32) | |
8406 | { | |
8407 | #if defined (HAVE_PSINFO32_T) | |
8408 | psinfo32_t data; | |
8409 | int note_type = NT_PSINFO; | |
8410 | #else | |
8411 | prpsinfo32_t data; | |
8412 | int note_type = NT_PRPSINFO; | |
8413 | #endif | |
8414 | ||
8415 | memset (&data, 0, sizeof (data)); | |
8416 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8417 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8418 | return elfcore_write_note (abfd, buf, bufsiz, | |
8419 | note_name, note_type, &data, sizeof (data)); | |
8420 | } | |
8421 | else | |
8422 | #endif | |
8423 | { | |
7c76fa91 | 8424 | #if defined (HAVE_PSINFO_T) |
183e98be AM |
8425 | psinfo_t data; |
8426 | int note_type = NT_PSINFO; | |
7c76fa91 | 8427 | #else |
183e98be AM |
8428 | prpsinfo_t data; |
8429 | int note_type = NT_PRPSINFO; | |
7c76fa91 MS |
8430 | #endif |
8431 | ||
183e98be AM |
8432 | memset (&data, 0, sizeof (data)); |
8433 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8434 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8435 | return elfcore_write_note (abfd, buf, bufsiz, | |
8436 | note_name, note_type, &data, sizeof (data)); | |
8437 | } | |
7c76fa91 MS |
8438 | } |
8439 | #endif /* PSINFO_T or PRPSINFO_T */ | |
8440 | ||
8441 | #if defined (HAVE_PRSTATUS_T) | |
8442 | char * | |
217aa764 AM |
8443 | elfcore_write_prstatus (bfd *abfd, |
8444 | char *buf, | |
8445 | int *bufsiz, | |
8446 | long pid, | |
8447 | int cursig, | |
8448 | const void *gregs) | |
7c76fa91 | 8449 | { |
183e98be AM |
8450 | const char *note_name = "CORE"; |
8451 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8452 | |
183e98be AM |
8453 | if (bed->elf_backend_write_core_note != NULL) |
8454 | { | |
8455 | char *ret; | |
8456 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8457 | NT_PRSTATUS, | |
8458 | pid, cursig, gregs); | |
8459 | if (ret != NULL) | |
8460 | return ret; | |
8461 | } | |
8462 | ||
8463 | #if defined (HAVE_PRSTATUS32_T) | |
8464 | if (bed->s->elfclass == ELFCLASS32) | |
8465 | { | |
8466 | prstatus32_t prstat; | |
8467 | ||
8468 | memset (&prstat, 0, sizeof (prstat)); | |
8469 | prstat.pr_pid = pid; | |
8470 | prstat.pr_cursig = cursig; | |
8471 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8472 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8473 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8474 | } | |
8475 | else | |
8476 | #endif | |
8477 | { | |
8478 | prstatus_t prstat; | |
8479 | ||
8480 | memset (&prstat, 0, sizeof (prstat)); | |
8481 | prstat.pr_pid = pid; | |
8482 | prstat.pr_cursig = cursig; | |
8483 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8484 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8485 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8486 | } | |
7c76fa91 MS |
8487 | } |
8488 | #endif /* HAVE_PRSTATUS_T */ | |
8489 | ||
51316059 MS |
8490 | #if defined (HAVE_LWPSTATUS_T) |
8491 | char * | |
217aa764 AM |
8492 | elfcore_write_lwpstatus (bfd *abfd, |
8493 | char *buf, | |
8494 | int *bufsiz, | |
8495 | long pid, | |
8496 | int cursig, | |
8497 | const void *gregs) | |
51316059 MS |
8498 | { |
8499 | lwpstatus_t lwpstat; | |
183e98be | 8500 | const char *note_name = "CORE"; |
51316059 MS |
8501 | |
8502 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
8503 | lwpstat.pr_lwpid = pid >> 16; | |
8504 | lwpstat.pr_cursig = cursig; | |
8505 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
8506 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
8507 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
8508 | #if !defined(gregs) | |
8509 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
8510 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
8511 | #else | |
8512 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
8513 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
8514 | #endif | |
8515 | #endif | |
47d9a591 | 8516 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8517 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
8518 | } | |
8519 | #endif /* HAVE_LWPSTATUS_T */ | |
8520 | ||
7c76fa91 MS |
8521 | #if defined (HAVE_PSTATUS_T) |
8522 | char * | |
217aa764 AM |
8523 | elfcore_write_pstatus (bfd *abfd, |
8524 | char *buf, | |
8525 | int *bufsiz, | |
8526 | long pid, | |
6c10990d NC |
8527 | int cursig ATTRIBUTE_UNUSED, |
8528 | const void *gregs ATTRIBUTE_UNUSED) | |
7c76fa91 | 8529 | { |
183e98be AM |
8530 | const char *note_name = "CORE"; |
8531 | #if defined (HAVE_PSTATUS32_T) | |
8532 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8533 | |
183e98be AM |
8534 | if (bed->s->elfclass == ELFCLASS32) |
8535 | { | |
8536 | pstatus32_t pstat; | |
8537 | ||
8538 | memset (&pstat, 0, sizeof (pstat)); | |
8539 | pstat.pr_pid = pid & 0xffff; | |
8540 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8541 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8542 | return buf; | |
8543 | } | |
8544 | else | |
8545 | #endif | |
8546 | { | |
8547 | pstatus_t pstat; | |
8548 | ||
8549 | memset (&pstat, 0, sizeof (pstat)); | |
8550 | pstat.pr_pid = pid & 0xffff; | |
8551 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8552 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8553 | return buf; | |
8554 | } | |
7c76fa91 MS |
8555 | } |
8556 | #endif /* HAVE_PSTATUS_T */ | |
8557 | ||
8558 | char * | |
217aa764 AM |
8559 | elfcore_write_prfpreg (bfd *abfd, |
8560 | char *buf, | |
8561 | int *bufsiz, | |
8562 | const void *fpregs, | |
8563 | int size) | |
7c76fa91 | 8564 | { |
183e98be | 8565 | const char *note_name = "CORE"; |
47d9a591 | 8566 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8567 | note_name, NT_FPREGSET, fpregs, size); |
8568 | } | |
8569 | ||
8570 | char * | |
217aa764 AM |
8571 | elfcore_write_prxfpreg (bfd *abfd, |
8572 | char *buf, | |
8573 | int *bufsiz, | |
8574 | const void *xfpregs, | |
8575 | int size) | |
7c76fa91 MS |
8576 | { |
8577 | char *note_name = "LINUX"; | |
47d9a591 | 8578 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8579 | note_name, NT_PRXFPREG, xfpregs, size); |
8580 | } | |
8581 | ||
97753bd5 AM |
8582 | char * |
8583 | elfcore_write_ppc_vmx (bfd *abfd, | |
8584 | char *buf, | |
8585 | int *bufsiz, | |
8586 | const void *ppc_vmx, | |
8587 | int size) | |
8588 | { | |
8589 | char *note_name = "LINUX"; | |
8590 | return elfcore_write_note (abfd, buf, bufsiz, | |
8591 | note_name, NT_PPC_VMX, ppc_vmx, size); | |
8592 | } | |
8593 | ||
89eeb0bc LM |
8594 | char * |
8595 | elfcore_write_ppc_vsx (bfd *abfd, | |
8596 | char *buf, | |
8597 | int *bufsiz, | |
8598 | const void *ppc_vsx, | |
8599 | int size) | |
8600 | { | |
8601 | char *note_name = "LINUX"; | |
8602 | return elfcore_write_note (abfd, buf, bufsiz, | |
8603 | note_name, NT_PPC_VSX, ppc_vsx, size); | |
8604 | } | |
8605 | ||
bb864ac1 CES |
8606 | char * |
8607 | elfcore_write_register_note (bfd *abfd, | |
8608 | char *buf, | |
8609 | int *bufsiz, | |
8610 | const char *section, | |
8611 | const void *data, | |
8612 | int size) | |
8613 | { | |
8614 | if (strcmp (section, ".reg2") == 0) | |
8615 | return elfcore_write_prfpreg (abfd, buf, bufsiz, data, size); | |
8616 | if (strcmp (section, ".reg-xfp") == 0) | |
8617 | return elfcore_write_prxfpreg (abfd, buf, bufsiz, data, size); | |
8618 | if (strcmp (section, ".reg-ppc-vmx") == 0) | |
8619 | return elfcore_write_ppc_vmx (abfd, buf, bufsiz, data, size); | |
89eeb0bc LM |
8620 | if (strcmp (section, ".reg-ppc-vsx") == 0) |
8621 | return elfcore_write_ppc_vsx (abfd, buf, bufsiz, data, size); | |
bb864ac1 CES |
8622 | return NULL; |
8623 | } | |
8624 | ||
b34976b6 | 8625 | static bfd_boolean |
718175fa | 8626 | elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset) |
252b5132 | 8627 | { |
c044fabd | 8628 | char *p; |
252b5132 | 8629 | |
252b5132 RH |
8630 | p = buf; |
8631 | while (p < buf + size) | |
8632 | { | |
c044fabd KH |
8633 | /* FIXME: bad alignment assumption. */ |
8634 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
8635 | Elf_Internal_Note in; |
8636 | ||
baea7ef1 AM |
8637 | if (offsetof (Elf_External_Note, name) > buf - p + size) |
8638 | return FALSE; | |
8639 | ||
dc810e39 | 8640 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 8641 | |
dc810e39 | 8642 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 | 8643 | in.namedata = xnp->name; |
baea7ef1 AM |
8644 | if (in.namesz > buf - in.namedata + size) |
8645 | return FALSE; | |
252b5132 | 8646 | |
dc810e39 | 8647 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
8648 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
8649 | in.descpos = offset + (in.descdata - buf); | |
baea7ef1 AM |
8650 | if (in.descsz != 0 |
8651 | && (in.descdata >= buf + size | |
8652 | || in.descsz > buf - in.descdata + size)) | |
8653 | return FALSE; | |
252b5132 | 8654 | |
718175fa JK |
8655 | switch (bfd_get_format (abfd)) |
8656 | { | |
8657 | default: | |
8658 | return TRUE; | |
8659 | ||
8660 | case bfd_core: | |
8661 | if (CONST_STRNEQ (in.namedata, "NetBSD-CORE")) | |
8662 | { | |
8663 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
8664 | return FALSE; | |
8665 | } | |
67cc5033 MK |
8666 | else if (CONST_STRNEQ (in.namedata, "OpenBSD")) |
8667 | { | |
8668 | if (! elfcore_grok_openbsd_note (abfd, &in)) | |
8669 | return FALSE; | |
8670 | } | |
718175fa JK |
8671 | else if (CONST_STRNEQ (in.namedata, "QNX")) |
8672 | { | |
8673 | if (! elfcore_grok_nto_note (abfd, &in)) | |
8674 | return FALSE; | |
8675 | } | |
b15fa79e AM |
8676 | else if (CONST_STRNEQ (in.namedata, "SPU/")) |
8677 | { | |
8678 | if (! elfcore_grok_spu_note (abfd, &in)) | |
8679 | return FALSE; | |
8680 | } | |
718175fa JK |
8681 | else |
8682 | { | |
8683 | if (! elfcore_grok_note (abfd, &in)) | |
8684 | return FALSE; | |
8685 | } | |
8686 | break; | |
8687 | ||
8688 | case bfd_object: | |
8689 | if (in.namesz == sizeof "GNU" && strcmp (in.namedata, "GNU") == 0) | |
8690 | { | |
8691 | if (! elfobj_grok_gnu_note (abfd, &in)) | |
8692 | return FALSE; | |
8693 | } | |
8694 | break; | |
08a40648 | 8695 | } |
252b5132 RH |
8696 | |
8697 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
8698 | } | |
8699 | ||
718175fa JK |
8700 | return TRUE; |
8701 | } | |
8702 | ||
8703 | static bfd_boolean | |
8704 | elf_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) | |
8705 | { | |
8706 | char *buf; | |
8707 | ||
8708 | if (size <= 0) | |
8709 | return TRUE; | |
8710 | ||
8711 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) | |
8712 | return FALSE; | |
8713 | ||
8714 | buf = bfd_malloc (size); | |
8715 | if (buf == NULL) | |
8716 | return FALSE; | |
8717 | ||
8718 | if (bfd_bread (buf, size, abfd) != size | |
8719 | || !elf_parse_notes (abfd, buf, size, offset)) | |
8720 | { | |
8721 | free (buf); | |
8722 | return FALSE; | |
8723 | } | |
8724 | ||
252b5132 | 8725 | free (buf); |
b34976b6 | 8726 | return TRUE; |
252b5132 | 8727 | } |
98d8431c JB |
8728 | \f |
8729 | /* Providing external access to the ELF program header table. */ | |
8730 | ||
8731 | /* Return an upper bound on the number of bytes required to store a | |
8732 | copy of ABFD's program header table entries. Return -1 if an error | |
8733 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8734 | |
98d8431c | 8735 | long |
217aa764 | 8736 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
8737 | { |
8738 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8739 | { | |
8740 | bfd_set_error (bfd_error_wrong_format); | |
8741 | return -1; | |
8742 | } | |
8743 | ||
936e320b | 8744 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
8745 | } |
8746 | ||
98d8431c JB |
8747 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
8748 | will be stored as an array of Elf_Internal_Phdr structures, as | |
8749 | defined in include/elf/internal.h. To find out how large the | |
8750 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
8751 | ||
8752 | Return the number of program header table entries read, or -1 if an | |
8753 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8754 | |
98d8431c | 8755 | int |
217aa764 | 8756 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
8757 | { |
8758 | int num_phdrs; | |
8759 | ||
8760 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8761 | { | |
8762 | bfd_set_error (bfd_error_wrong_format); | |
8763 | return -1; | |
8764 | } | |
8765 | ||
8766 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 8767 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
8768 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
8769 | ||
8770 | return num_phdrs; | |
8771 | } | |
ae4221d7 | 8772 | |
db6751f2 | 8773 | enum elf_reloc_type_class |
217aa764 | 8774 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
8775 | { |
8776 | return reloc_class_normal; | |
8777 | } | |
f8df10f4 | 8778 | |
47d9a591 | 8779 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
8780 | relocation against a local symbol. */ |
8781 | ||
8782 | bfd_vma | |
217aa764 AM |
8783 | _bfd_elf_rela_local_sym (bfd *abfd, |
8784 | Elf_Internal_Sym *sym, | |
8517fae7 | 8785 | asection **psec, |
217aa764 | 8786 | Elf_Internal_Rela *rel) |
f8df10f4 | 8787 | { |
8517fae7 | 8788 | asection *sec = *psec; |
f8df10f4 JJ |
8789 | bfd_vma relocation; |
8790 | ||
8791 | relocation = (sec->output_section->vma | |
8792 | + sec->output_offset | |
8793 | + sym->st_value); | |
8794 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 8795 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 8796 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 8797 | { |
f8df10f4 | 8798 | rel->r_addend = |
8517fae7 | 8799 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 8800 | elf_section_data (sec)->sec_info, |
753731ee AM |
8801 | sym->st_value + rel->r_addend); |
8802 | if (sec != *psec) | |
8803 | { | |
8804 | /* If we have changed the section, and our original section is | |
8805 | marked with SEC_EXCLUDE, it means that the original | |
8806 | SEC_MERGE section has been completely subsumed in some | |
8807 | other SEC_MERGE section. In this case, we need to leave | |
8808 | some info around for --emit-relocs. */ | |
8809 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
8810 | sec->kept_section = *psec; | |
8811 | sec = *psec; | |
8812 | } | |
8517fae7 AM |
8813 | rel->r_addend -= relocation; |
8814 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
8815 | } |
8816 | return relocation; | |
8817 | } | |
c629eae0 JJ |
8818 | |
8819 | bfd_vma | |
217aa764 AM |
8820 | _bfd_elf_rel_local_sym (bfd *abfd, |
8821 | Elf_Internal_Sym *sym, | |
8822 | asection **psec, | |
8823 | bfd_vma addend) | |
47d9a591 | 8824 | { |
c629eae0 JJ |
8825 | asection *sec = *psec; |
8826 | ||
68bfbfcc | 8827 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
8828 | return sym->st_value + addend; |
8829 | ||
8830 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 8831 | elf_section_data (sec)->sec_info, |
753731ee | 8832 | sym->st_value + addend); |
c629eae0 JJ |
8833 | } |
8834 | ||
8835 | bfd_vma | |
217aa764 | 8836 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 8837 | struct bfd_link_info *info, |
217aa764 AM |
8838 | asection *sec, |
8839 | bfd_vma offset) | |
c629eae0 | 8840 | { |
68bfbfcc | 8841 | switch (sec->sec_info_type) |
65765700 JJ |
8842 | { |
8843 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
8844 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
8845 | offset); | |
65765700 | 8846 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 8847 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
8848 | default: |
8849 | return offset; | |
8850 | } | |
c629eae0 | 8851 | } |
3333a7c3 RM |
8852 | \f |
8853 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
8854 | reconstruct an ELF file by reading the segments out of remote memory | |
8855 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
8856 | points to. If not null, *LOADBASEP is filled in with the difference | |
8857 | between the VMAs from which the segments were read, and the VMAs the | |
8858 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
8859 | ||
8860 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
8861 | remote memory at target address VMA into the local buffer at MYADDR; it | |
8862 | should return zero on success or an `errno' code on failure. TEMPL must | |
8863 | be a BFD for an ELF target with the word size and byte order found in | |
8864 | the remote memory. */ | |
8865 | ||
8866 | bfd * | |
217aa764 AM |
8867 | bfd_elf_bfd_from_remote_memory |
8868 | (bfd *templ, | |
8869 | bfd_vma ehdr_vma, | |
8870 | bfd_vma *loadbasep, | |
f075ee0c | 8871 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
8872 | { |
8873 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
8874 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
8875 | } | |
4c45e5c9 JJ |
8876 | \f |
8877 | long | |
c9727e01 AM |
8878 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
8879 | long symcount ATTRIBUTE_UNUSED, | |
8880 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 8881 | long dynsymcount, |
c9727e01 AM |
8882 | asymbol **dynsyms, |
8883 | asymbol **ret) | |
4c45e5c9 JJ |
8884 | { |
8885 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8886 | asection *relplt; | |
8887 | asymbol *s; | |
8888 | const char *relplt_name; | |
8889 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
8890 | arelent *p; | |
8891 | long count, i, n; | |
8892 | size_t size; | |
8893 | Elf_Internal_Shdr *hdr; | |
8894 | char *names; | |
8895 | asection *plt; | |
8896 | ||
8615f3f2 AM |
8897 | *ret = NULL; |
8898 | ||
90e3cdf2 JJ |
8899 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
8900 | return 0; | |
8901 | ||
8615f3f2 AM |
8902 | if (dynsymcount <= 0) |
8903 | return 0; | |
8904 | ||
4c45e5c9 JJ |
8905 | if (!bed->plt_sym_val) |
8906 | return 0; | |
8907 | ||
8908 | relplt_name = bed->relplt_name; | |
8909 | if (relplt_name == NULL) | |
d35fd659 | 8910 | relplt_name = bed->rela_plts_and_copies_p ? ".rela.plt" : ".rel.plt"; |
4c45e5c9 JJ |
8911 | relplt = bfd_get_section_by_name (abfd, relplt_name); |
8912 | if (relplt == NULL) | |
8913 | return 0; | |
8914 | ||
8915 | hdr = &elf_section_data (relplt)->this_hdr; | |
8916 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
8917 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
8918 | return 0; | |
8919 | ||
8920 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
8921 | if (plt == NULL) | |
8922 | return 0; | |
8923 | ||
8924 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 8925 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
8926 | return -1; |
8927 | ||
eea6121a | 8928 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
8929 | size = count * sizeof (asymbol); |
8930 | p = relplt->relocation; | |
cb53bf42 | 8931 | for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel) |
041de40d AM |
8932 | { |
8933 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
8934 | if (p->addend != 0) | |
8935 | { | |
8936 | #ifdef BFD64 | |
8937 | size += sizeof ("+0x") - 1 + 8 + 8 * (bed->s->elfclass == ELFCLASS64); | |
8938 | #else | |
8939 | size += sizeof ("+0x") - 1 + 8; | |
8940 | #endif | |
8941 | } | |
8942 | } | |
4c45e5c9 JJ |
8943 | |
8944 | s = *ret = bfd_malloc (size); | |
8945 | if (s == NULL) | |
8946 | return -1; | |
8947 | ||
8948 | names = (char *) (s + count); | |
8949 | p = relplt->relocation; | |
8950 | n = 0; | |
cb53bf42 | 8951 | for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel) |
4c45e5c9 JJ |
8952 | { |
8953 | size_t len; | |
8954 | bfd_vma addr; | |
8955 | ||
8956 | addr = bed->plt_sym_val (i, plt, p); | |
8957 | if (addr == (bfd_vma) -1) | |
8958 | continue; | |
8959 | ||
8960 | *s = **p->sym_ptr_ptr; | |
65a7a66f AM |
8961 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since |
8962 | we are defining a symbol, ensure one of them is set. */ | |
8963 | if ((s->flags & BSF_LOCAL) == 0) | |
8964 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 8965 | s->flags |= BSF_SYNTHETIC; |
4c45e5c9 JJ |
8966 | s->section = plt; |
8967 | s->value = addr - plt->vma; | |
8968 | s->name = names; | |
8f39ba8e | 8969 | s->udata.p = NULL; |
4c45e5c9 JJ |
8970 | len = strlen ((*p->sym_ptr_ptr)->name); |
8971 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8972 | names += len; | |
041de40d AM |
8973 | if (p->addend != 0) |
8974 | { | |
1d770845 L |
8975 | char buf[30], *a; |
8976 | int len; | |
041de40d AM |
8977 | memcpy (names, "+0x", sizeof ("+0x") - 1); |
8978 | names += sizeof ("+0x") - 1; | |
1d770845 L |
8979 | bfd_sprintf_vma (abfd, buf, p->addend); |
8980 | for (a = buf; *a == '0'; ++a) | |
8981 | ; | |
8982 | len = strlen (a); | |
8983 | memcpy (names, a, len); | |
8984 | names += len; | |
041de40d | 8985 | } |
4c45e5c9 JJ |
8986 | memcpy (names, "@plt", sizeof ("@plt")); |
8987 | names += sizeof ("@plt"); | |
8f39ba8e | 8988 | ++s, ++n; |
4c45e5c9 JJ |
8989 | } |
8990 | ||
8991 | return n; | |
8992 | } | |
3d7f7666 | 8993 | |
3b22753a L |
8994 | /* It is only used by x86-64 so far. */ |
8995 | asection _bfd_elf_large_com_section | |
8996 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, | |
f592407e | 8997 | SEC_IS_COMMON, NULL, "LARGE_COMMON", 0); |
ecca9871 | 8998 | |
d1036acb L |
8999 | void |
9000 | _bfd_elf_set_osabi (bfd * abfd, | |
9001 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
9002 | { | |
9003 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
9004 | ||
9005 | i_ehdrp = elf_elfheader (abfd); | |
9006 | ||
9007 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
d8045f23 NC |
9008 | |
9009 | /* To make things simpler for the loader on Linux systems we set the | |
9010 | osabi field to ELFOSABI_LINUX if the binary contains symbols of | |
9011 | the STT_GNU_IFUNC type. */ | |
9012 | if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE | |
9013 | && elf_tdata (abfd)->has_ifunc_symbols) | |
9014 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX; | |
d1036acb | 9015 | } |
fcb93ecf PB |
9016 | |
9017 | ||
9018 | /* Return TRUE for ELF symbol types that represent functions. | |
9019 | This is the default version of this function, which is sufficient for | |
d8045f23 | 9020 | most targets. It returns true if TYPE is STT_FUNC or STT_GNU_IFUNC. */ |
fcb93ecf PB |
9021 | |
9022 | bfd_boolean | |
9023 | _bfd_elf_is_function_type (unsigned int type) | |
9024 | { | |
d8045f23 NC |
9025 | return (type == STT_FUNC |
9026 | || type == STT_GNU_IFUNC); | |
fcb93ecf | 9027 | } |